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Big Thorne Project

Thorne Bay Ranger District, 

Tongass National Forest

Draft Environmental 

Impact Statement

Volume III - Unit Cards (Units 1-120) 
The U.S. Department of Agriculture (USDA) prohibits discrimination in all its programs 

and activities on the basis of race, color, national origin, age, disability, and where 

applicable, sex, marital status, familial status, parental status, religion, sexual 

orientation, genetic information, political beliefs, reprisal, or because all or part of an 

individual’s income is derived from any public assistance program. (Not all prohibited 

bases apply to all programs.) Persons with disabilities who require alternative means 

for communication of program information (Braille, large print, audiotape, etc.) should 

contact USDA's TARGET Center at (202) 720-2600 (voice and TDD). 

To file a complaint of discrimination, write to USDA, Director, Office of Civil Rights, 

1400 Independence Avenue, S.W., Washington, D.C. 20250-9410, or call (800) 795-

3272 (voice) or (202) 720-6382 (TDD). USDA is an equal opportunity provider and 

employer.
Unit 1

Total Unit

Acres:

25.0 Prescription: Clearcut

VCU

Number:

595 Harvest

System:

Shovel

Net Harvest

Volume

(MBF):

576

LUD:

Scenic Viewshed, 

Timber Production

 SILVICULTURE:

Existing Condition: This unit has old growth stand structure. The mistletoe rating for the stand is moderate to high. The 

primary defect is stem decay which ranges from moderate to high. The windthrow risk rating for the stand is moderate. All 

adjacent past harvest areas meet NFMA requirements for regeneration and no longer are considered openings. 

Silvicultural Objective/Desired Condition: The desired condition for this stand is a highly productive, healthy, windfirm stand 

grown for timber management that retains residual trees as needed to meet standards and guides or other objectives. 

Silvicultural Prescription: Even-aged Management - Clearcut 

This stand is being recommended for harvest at this time because it is not expected to obtain the desired condition given the 

current growth trajectory. This stand is over-mature with moderate to heavy stem decay and defect resulting in a situation 

where stand growth is being offset or exceeded by decay. Even-aged clear cutting is being prescribed to preclude or 

minimize the risk of windthrow post harvest, promote natural regeneration by opening up the canopy, and minimize defect 

and disease in the future stand to the maximum extent possible.

This unit is adjacent to the Klawock-Control lake highway and due to the combination of Scenic Viewshed LUD and 

foreground distance zone, requires limited visibility of harvest openings from this road (see Scenery comments). In order to 

meet this requirement a screen of trees is being prescribed to be maintained to block most of the harvest area from view, 

although the visible opening may be up to 5 acres in size (see Scenery). Design this screen approximately as shown on the 

unit card map. Evaluate the effectiveness and windthrow risk of the planned screen at the time of layout and adjust as 

needed.

 TIMBER/LOGGING:

This unit is planned for shovel yarding to the two proposed temporary roads.

 ENGINEERING/ROADS:

Unit is accessed by two proposed temporary roads, totaling 1,800 feet, as displayed on the unit card.

 BOTANY:

No Concerns

 FISHERIES:

Streams are tributaries to Steelhead Creek. Stream A1 characteristics do not include project-specific, field-verified, 

information. 

Stream#: A Class: III, IV Flagging: O/W, G/W C- Type: HCL, MMO, HCO 

Concerns: none

Buffer (RMA): Class III for HCL to the top of the side-slope break. Class IV for MMO and HCO. 

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed

Protection: Category B and C 

Stream#: A1 (Steelhead Creek ) Class: I Flagging: B/W C- Type: MCL

Concerns: none known

Buffer (RMA): Class I for MCL greater of 100 feet or to the top of the side-slope break.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed

Protection: Category A 

Stream#: 1.1L Class: I Flagging: B/W C- Type: MMM, HCV

Unit

Number 1 Alternatives 2, 3, 4, 5

Summary of Concerns, Responses, BMPs and Mitigation

 INVASIVE SPECIES:

Bull thistle located in two infestations just north of unit along road 2030000 . Both have been treated in the past and are 

recommended for monitoring and follow-up treatments.
Unit 1

Concerns: none

Buffer (RMA): Class I for MMM greater of 120 feet, flood plain, riparian vegetation or soils or riparian associated wetland 

fens. Class I for HCV for greater of 100 feet or to the top of the side-slope break.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed

Protection: Category A 

Stream#: 1.1L.1L Class: III Flagging: O/W C- Type: HCD, HCM

Concerns: none 

Buffer (RMA): Class III for HCD and HCM to the top of side-slope break.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed

Protection: Category B 

Temporary roads for Unit 1: All Alternatives -- The temporary roads have not been field verified and will be surveyed before 

implementation. If any stream crossings are found, crossings structures and locations will be approved by USFS, in 

consultation with fisheries biologist or hydrologist, prior to construction (BMP 14.17). During construction of temporary roads 

implement BMPs 12.17, 13.10, 13.11, 13.16, 14.3, and 14.5.

 GEOLOGY/KARST:

No Concerns

 HERITAGE RESOURCES:

This unit was investigated per the third amended interagency Programmatic Agreement (PA) for historic properties. As 

specified by the PA, any potential adverse effect on historic properties (if any) was mitigated and portions of the Area of 

Potential Effect will be monitored by a qualified heritage specialist during and/or after actual ground disturbance.

 SCENERY:

The Scenic Integrity Objective (SIO) for this unit is almost entirely Very Low because the unit is Seldom Seen. However, the 

original unit extended to within about 50-100 ft of the Klawock-Control Lake highway and this portion had a High SIO 

because it was in Scenic Viewshed and Foreground distance zone. Therefore, a visual buffer is established along the 

highway to screen views from this Visual Priority Route (as shown in unit card map and described in the silvicultural 

prescription). As a result, the harvested area would begin beyond the visual buffer, and is generally downslope of the 

highway. The unit is easily screened and, because of moderate VAC, the Forest Plan allows a 5+ acre opening. However, 

because of the proximity to the road, the visible opening should be 5 acres or less. As noted in the prescription, the visual 

buffer or screen will be designed for wind firmness.

 RECREATION:

The open log landing located adjacent to this unit serves as a parking area for a popular dispersed recreation use area: the 

2030 road system, which provides access to the Steelhead River drainage and the Klawock Mountains. Many people use 

this area in the winter to park trucks and trailers and then snowmobile into the Klawock Mountains. Kids sled down the road 

here. People also hunt and fish from this road system. Parking here is likely to be reduced due to rock removal from the 

adjacent rock pit for road construction. Also, it is likely that logs would be decked at this site, which would further affect the 

useable recreation area.

 SOILS/WETLANDS:

Slopes range from 15 to 35 percent. Less than 50% of the unit consists of forested wetland. The unit is dominant upland. 

Approximately a quarter of the northern part of the unit is forested wetland and poorly drained soils (BMP 12.5). The soils and 

wetlands are suitable for shovel yarding. Shovel yarding should follow BMPs 12.5, 13.2 and 13.9. Specifically, the shovel 

operator should avoid the small non-forested areas of the unit to prevent rutting. Slopes over 25% gradient may not be 

suitable for shovel yarding under some soil moisture conditions. Use care when approving shovel yarding on slopes over 

25% gradient. Avoid track slippage and rutting.

The proposed temporary roads will impact approximately 1 acre of forested wetland within the unit and 1 acre outside of the 

unit. Wetland avoidance is not feasible due to harvest on forested wetlands and the location of fish streams. Follow BMPs 

12.5 and 14.9. Provide adequate cross drainage, remove drainage structures, and close road after harvest (BMP 14.9).

 WILDLIFE:

Unit includes average snow deer winter range (entire unit). Legacy standard and guideline does not apply in this VCU.
929

2000300

2030000

2030100

1.3L

1.1R.1R

1.1L

A

1.1L.2L

1.1R

1.1L

1.1R.1L

A

1.3 L

1.3L.1L

A1

Steelhead

A1.1R

1.1L.1L

1986

1990

1990

1990 1987

1983

2000

1987

1993

1988

1986

1990

1986

1987 1990

1990

1983

1

5

4

2

6

22

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 001 Alternative 2 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Partial Cut

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

595

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt2.mxd 14 July 2012

RR

SR
929

2000300

2030000

2030100

1.3L

1.1R.1R

1.1L

A

1.1L.2L

1.1R

1.1L

1.1R.1L

A

1.3 L

1.3L.1L

A1

Steelhead

A1.1R

1.1L.1L

1986

1990

1990

1990 1987

1983

2000

1987

1993

1988

1986

1990

1986

1987 1990

1990

1983

1

5

4

2

6

22

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 001 Alternative 3 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

595

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt3.mxd 14 July 2012

RR

SR
929

2000300

2030000

2030100

1.3L

1.1R.1R

1.1L

A

1.1L.2L

1.1R

1.1L

1.1R.1L

A

1.3 L

1.3L.1L

A1

Steelhead

A1.1R

1.1L.1L

1990

1990

1990 1987

1983

1987

1993

1988

1986

2000

1986

1990

1987 1990

1990

1983

1986

4

2

22

1

6

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 001 Alternative 4 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

595

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt4.mxd 20 March 2012

RR

SR
929

2000300

2030000

2030100

1.3L

1.1R.1R

1.1L

A

1.1L.2L

1.1R

1.1L

1.1R.1L

A

1.3 L

1.3L.1L

A1

Steelhead

A1.1R

1.1L.1L

1986

1990

1990

1990 1987

1983

2000

1987

1993

1988

1986

1990

1986

1987 1990

1990

1983

1

5

4

2

6

22

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 001 Alternative 5 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Sytematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

595

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt5.mxd 14 July 2012

RR

SR
Unit 2

Total Unit

Acres:

14.7 Prescription: Clearcut

VCU

Number:

595 Harvest

System:

Shovel

Net Harvest

Volume

(MBF):

510

LUD:

Scenic Viewshed, 

Timber Production

 SILVICULTURE:

Existing Condition: This unit is in old-growth gap phase stand structure. The timber volume is above average with some high 

volume Sitka spruce in the northern portion of the unit. The western hemlock has moderate stem decay and mistletoe that is 

moderate to heavy. Defect for all other species is moderate. Windthrow risk is moderate. All past harvest areas adjacent to 

or near this unit are adequately restocked with trees at least 5 feet tall and meet NFMA requirements for no longer being 

considered openings.

Silvicultural Objective/Desired Condition: The desired condition for this stand is a highly productive, healthy, windfirm stand 

grown for timber management that retains residual trees as needed to meet standards and guides or other objectives. 

Silvicultural Prescription: Even-aged Management - Clearcut

This unit is being recommended for harvest at this time becauseit is not expected to obtain the desired condition given the 

current growth trajectory. This stand is over-mature with moderate stem decay and defect resulting in a situation where stand 

growth is being offset or exceeded by decay. Even-aged clear cutting is being prescribed to preclude or minimize the risk of 

windthrow post harvest, promote natural regeneration by opening up the canopy, and minimize defect and disease in the 

future stand to the maximum extent possible.

This unit is adjacent to the Klawock-Control lake highway and due to the combination of Scenic Viewshed LUD and 

foreground distance zone, requires limited visibility of harvest openings from this road (see Scenery comments). In order to 

meet this requirement a screen of trees is being prescribed to be maintained to block most of the harvest area from view, 

although the visible opening may be up to 5 acres in size (see Scenery). Design this screen approximately as shown on the 

unit card map. Evaluate the effectiveness and windthrow risk of the planned screen at the time of layout and adjust as 

needed.

 TIMBER/LOGGING:

This unit is planned for shovel yarding to the proposed temporary road and the existing NFS road 2030000.

 ENGINEERING/ROADS:

Unit is accessed by a proposed temporary road of 500 feet as displayed on the unit card. Temporary road is accessed by 

state highway and will require a driveway permit to allow construction. The southern portion of unit is also accessed by 

existing NFS road 2030000.

 BOTANY:

No Concerns

 FISHERIES:

Streams are tributaries to Steelhead Creek. Stream 1.1L characteristics do not include project-specific, field-verified, 

information.

Stream#: 1.1L Class: II Flagging: B/W C- Type: MMM

Concerns: none known

Buffer (RMA): Class II for MMM greater of 120 feet, flood plain, riparian vegetation or soils, or riparian associated wetland 

fens 

Alternatives: 2, 3, 4, and 5 Buffer (RAW): will be determined by IDT during layout.

Protection: Category A 

Stream#: 1.1L.1L Class: III Flagging: O/W C- Type: MMS

Concerns: none

Unit

Number 2 Alternatives 2, 3, 4, 5

Summary of Concerns, Responses, BMPs and Mitigation

 INVASIVE SPECIES:

Bull thistle located in two infestations just southwest of unit along road 2030000 . Both have been treated in the past and are 

recommended for monitoring and follow-up treatments.
Unit 2

Buffer (RMA): Class III for MMS greater of 120 feet, flood plain, riparian vegetation or soils, or riparian associated wetland 

fens 

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed

Protection: Category B 

All other streams in unit: Class IV Flagging: G/W C- Type: HC 

Buffer (RMA): none

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed

Protection: Category C 

Temporary roads for Unit 2: All Alternatives -- No known stream crossings. The temporary roads have not been field verified 

and will be surveyed before implementation. If any stream crossings are found, crossings structures and locations will be 

approved by USFS, in consultation with fisheries biologist or hydrologist, prior to construction (BMP 14.17). During 

construction of temporary roads, implement BMPs 12.17, 13.10, 13.11, 13.6, 14.3, and 14.5.

 GEOLOGY/KARST:

No Concerns

 HERITAGE RESOURCES:

This unit was investigated per the third amended interagency Programmatic Agreement (PA) for historic properties. As 

specified by the PA, any potential adverse effect on historic properties (if any) was mitigated and portions of the Area of 

Potential Effect will be monitored by a qualified heritage specialist during and/or after actual ground disturbance.

 SCENERY:

The Scenic Integrity Objective (SIO) for this unit is primarily Low and Very Low. However, about 5 acres of the unit is in High 

SIO because it is in Scenic Viewshed and Foreground distance zones. The original unit extends to within about 50-100 ft of 

the Klawock-Control Lake highway; therefore, a visual buffer is established along the highway to screen views from this 

Visual Priority Route (as shown in unit card map and described in the silvicultural prescription). As a result, the harvested 

area would begin beyond the visual buffer, and is generally downslope of the highway. The unit is easily screened and, 

because of moderate VAC, the Forest Plan allows a 5+ acre opening. However, because of the proximity to the road, the 

visible opening should be 5 acres or less. As noted in the prescription, the visual buffer or screen will be designed for wind 

firmness.

 RECREATION:

No Concerns

 SOILS/WETLANDS:

Slopes range from 5 to 25%. Less than 50% of the unit consists of forested wetland. The unit is dominant upland. There is 

approximately 2 acres (10% of the unit) of emergent short sedge/forested wetland complex in the northern portion of the 

unit. The soils and wetlands are suitable for shovel yarding. Shovel yarding should follow BMPs 12.5, 13.2 and 13.9. 

Specifically, the shovel operator should avoid the small non-forested areas of the unit to prevent rutting. Slopes over 25% 

gradient may not be suitable for shovel yarding under some soil moisture conditions. Use care when approving shovel 

yarding on slopes over 25% gradient. Avoid track slippage and rutting.

The proposed 500-ft temporary road is not expected to impact wetlands.

 WILDLIFE:

Unit includes average snow deer winter range (entire unit, including visual buffer), most of which is also deep snow marten 

winter habitat (entire unit except north corner). Legacy standard and guideline does not apply in this VCU.
2000300

929

2030100

2030100

2030000

2030110

2030111

2030110

1.1L

1.1L

1.1L

A

1.3L.1L

1.1L.2L.1L

1.1L.1L

1.1L.2L

A

1.1L.1R.1R

1.1L.3L

1.1L.1R

A1

A1.1R 1990

2003

2004

1987

1993

1986

2000

1990

1986

1987

1990

1990

1983

1986

3

3

2

1

22

6

5

4

3

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 002 Alternative 2 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Partial Cut

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

595

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt2.mxd 14 July 2012

RR

SR
2000300

929

2030100

2030100

2030000

2030110

2030111

2030110

1.1L

1.1L

1.1L

A

1.3L.1L

1.1L.2L.1L

1.1L.1L

1.1L.2L

A

1.1L.1R.1R

1.1L.3L

1.1L.1R

A1

A1.1R 1990

2003

2004

1987

1993

1986

2000

1990

1986

1987

1990

1990

1983

1986

3

3

2

1

22

6

5

4

3

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 002 Alternative 3 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

595

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt3.mxd 14 July 2012

RR

SR
2030100

2000300

929

2030100

2030000

2030110

1.1L

1.1L

1.1L

1.1L.2L.1L 1.1L.2L

A

1.3L.1L

1.1L.1L

A

1.1L.1R.1R

1.1L.3L

A1.1R

A1

1.1L.1R

1983

1987

1990

1986

1987

2004

2003

1993

1986

2000

1990

1986

1990

1990

3

3

1

2

22

6

4

3

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 002 Alternative 4 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

595

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt4.mxd 20 March 2012

RR

SR
2000300

2030100

929

2030100

2030000

2030110

1.1L.1L

1.1L

1.1L

1.1L

1.1L.2

1.

L

1L.2L.1L

A

1.3L.1L

A

1.1L.1R.1R

1.1L.3L

A1.1R

A1

1.1L.1R

1990

1983

1987

1990

1986

2003

2004

1987

1993

1986

2000

1990

1986

1990

4

5

3

1

3

3

2

22

6

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 002 Alternative 5 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Sytematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

595

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt5.mxd 14 July 2012

RR

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Unit 3

Total Unit

Acres:

12.2 Prescription: 2, 3, 5 - Clearcut

4 - 50% Removal

VCU

Number:

595 Harvest

System:

Helicopter

Net Harvest

Volume

(MBF):

2, 3, 5 - 267

4 - 134 LUD:

Scenic Viewshed, 

Timber Production

 SILVICULTURE:

Existing Condition: The stand has old-growth stand structure. Stem decay is high and especially high in the larger trees. 

Mistletoe infection was moderate. Defect is high for all species, except in the Sitka spruce, which is moderate. All past 

harvest areas adjacent to or near this unit are adequately restocked with trees at least 5 feet tall, meeting NFMA 

requirements for no longer being considered an opening. Windthrow Risk is moderate.

Silvicultural Objective/Desired Condition: The desired condition for this stand is a highly productive, healthy, windfirm stand 

grown for timber management that retains residual trees as needed to meet standards and guides or other objectives. 

Silvicultural Prescription: Even-aged Management - Clearcut (Alternatives 2, 3, and 5)

This stand is being recommended for harvest at this time because it is not expected to obtain the desired condition given the 

current growth trajectory. This stand is over-mature with heavy stem decay and defect resulting in a situation where stand 

growth is being offset or exceeded by decay. Even-aged clear cutting is being prescribed to preclude or minimize the risk of 

windthrow post harvest, promote natural regeneration by opening up the canopy, and minimize defect and disease in the 

future stand to the maximum extent possible.

Silvicultural Prescription: Uneven-age Management Single Tree Selection (Alternative 4)

Maintain at least 50 percent of the setting pretreatment basal area, based on standing live tree total for the unit, uncut. 

Individual trees selected for harvest may occur in small groups but will generally be evenly distributed across the stand. Any 

small groups will usually be less than one acre but may occasionally go up to two acres in size where needed to address 

insect and disease issues or capitalize on existing advanced regeneration of desirable tree species. Trees selected for 

harvest will generally be well distributed and no large openings will occur as a result of the harvest. Review the marking 

guides and silvicultural prescription for more detailed information and direction for how to implement this prescription. The 

uneven-aged single tree selection regeneration method is being prescribed for this unit in Alternative 4 specifically to 

maintain intact diverse structure for wildlife needed at this time and place in the landscape to meet the objectives of this 

alternative. This system is not optimum for promoting timber production but is being prescribed in alternative 4 primarily to 

mitigate the overall effects of the project on wildlife.

 TIMBER/LOGGING:

This unit is planned for helicopter yarding to a landing on the proposed temporary road for Unit 2.

 ENGINEERING/ROADS:

There is no proposed road construction for this unit. This unit will utilize the proposed temporary road located in Unit 2 to the 

south. See the unit card for Unit 2 for road description.

 BOTANY:

No Concerns

 FISHERIES:

Unit

Number 3 Alternatives 2, 3, 4, 5

Summary of Concerns, Responses, BMPs and Mitigation

 INVASIVE SPECIES:

No Concerns
Unit 3

Streams are tributaries to Steelhead Creek. Stream 1.1L.3L characteristics do not include project-specific, field-verified, 

information.

Stream#: 1.1L Class: II Flagging: B/W C- Type: MMM, MCM 

Concerns: blowdown, active erosion, steep side-slopes with exposed bedrock observed

Buffer (RMA): Class II for MMS greater of 120 feet, flood plain, riparian vegetation or soils, or riparian associated wetland 

fens. 

Alternatives: 2, 3 , 4, and 5 Buffer (RAW): Will be determined by IDT during layout. 

Alternative: 4 Buffer (RAW): No review needed because of prescription.

Protection: Category A 

Stream#: 1.1L.3L Class: II, III Flagging: B/W,O/W C- Type: HCV, MCS, MMS, HCL

Concerns: none known

Buffer (RMA): Class II for MMS greater of 120 feet, flood plain, riparian vegetation or soils, or riparian associated wetland 

fens. Class II for MCS and HCV greater of 100 feet or the side-slope break. Class III for HCL to the top of the side-slope 

break.

Alternatives: 2, 3 , and 5 Buffer (RAW): Will be determined by IDT during layout. 

Alternative: 4 Buffer (RAW): No review needed because of prescription.

Protection: Category A and B

All other streams in unit: Class IV Flagging: G/W C- Type: HC 

Buffer (RMA): none

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed

Protection: Category C

 GEOLOGY/KARST:

No Concerns

 HERITAGE RESOURCES:

This unit was investigated per the third amended interagency Programmatic Agreement (PA) for historic properties. As 

specified by the PA, any potential adverse effect on historic properties (if any) was mitigated and portions of the Area of 

Potential Effect will be monitored by a qualified heritage specialist during and/or after actual ground disturbance.

 SCENERY:

The Scenic Integrity Objective (SIO) for this three-polygon, helicopter unit is primarily Low and Very Low. However, about 1 

acre of the unit remains in High SIO because it is in Scenic Viewshed and Foreground distance zone. The unit is set back 50-

350 ft from the state highway; this setback functions as a visual buffer. In addition, the nearest polygon to the highway is 

only 1 acre; the remainder of the unit is at least 250 ft from the highway. Further, two 200+ ft riparian buffers extend the 

length of the unit, further breaking up the openings within the unit. Alternative 4, in particular, would have no concerns 

because the unit is prescribed for uneven-aged management in this alternative.

 RECREATION:

No concerns.

 SOILS/WETLANDS:

Slopes are gentle throughout the unit averaging less than 30%. Approximately 15% of the unit contains forested wetlands. 

The majority of the unit contains upland soils. A minimum of partial suspension would meet soil and wetland resource 

concerns (BMPs 12.5, 13.5, and 13.9).

 WILDLIFE:

Unit includes average snow deer winter range (all settings), some of which is also deep snow marten habitat (western two 

settings). Legacy standard and guideline does not apply in this VCU.

Alternative 4: Prescription is 50 percent basal area removal to maintain connectivity in Steelhead drainage and other habitat 

values.
2030110

2000300

929

2030111

1.1L

1.1L.1L

1.1L.2L.1L

1.1L.4L

1.1L.3L

1.1L.2L

A

1.1L.3L

1.1L

1.1L

2004

2004

2003

1987

1986

2

3

3

3

22

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 003 Alternative 2 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Partial Cut

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

595

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt2.mxd 14 July 2012

RR

SR
2030110

2000300

929

2030111

1.1L

1.1L.1L

1.1L.2L.1L

1.1L.4L

1.1L.3L

1.1L.2L

A

1.1L.3L

1.1L

1.1L

2004

2004

2003

1987

1986

2

3

3

3

22

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 003 Alternative 3 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

595

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt3.mxd 14 July 2012

RR

SR
2030110

2000300

929

1.1L

1.1L.1L

1.1L.2L.1L

1.1L.4L

1.1L.3L

1.1L.2L

A

1.1L.3L

1.1L

1.1L

2004

2004

2003

1987

1986

2

3

3

3

22

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 003 Alternative 4 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

595

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt4.mxd 20 March 2012

RR

SR
2030110

2000300

929

1.1L

1.1L.1L

1.1L.2L.1L

1.1L.4L

1.1L.3L

1.1L.2L

A

1.1L.3L

1.1L

1.1L

2004

2004

2003

1987

1986

2

3

3

3

22

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 003 Alternative 5 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Sytematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

595

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt5.mxd 14 July 2012

RR

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Unit 4

Total Unit

Acres:

45.2 Prescription: Clearcut

VCU

Number:

595 Harvest

System:

Cable, Shovel

Helicopter

Net Harvest

Volume

(MBF):

846

LUD:

Timber Production

 SILVICULTURE:

Existing Condition: This unit has old growth stand structure. Some areas of marginal volume are found in association with 

windthrow areas in the western portion of the unit adjacent to past harvests on private land. In the western hemlock mistletoe 

is moderate to heavy with most trees showing infection. Stem decay also appears to be heavy especially in larger western 

hemlock. Defect is moderate for all other species. Windthrow risk is high. All past harvest areas adjacent to or near this unit 

are adequately restocked with trees at least 5 feet tall and meet NFMA requirements for no longer being considered an 

opening.

Silvicultural Objective/Desired Condition: The desired condition for this stand is a highly productive, healthy, windfirm stand 

grown for timber management that retains residual trees as needed to meet standards and guides or other objectives. 

Silvicultural Prescription: Even-aged Management - Clearcut

This stand is being recommended for harvest at this time because it is not expected to obtain the desired condition given the 

current growth trajectory. This stand is over-mature with moderate to heavy stem decay and defect resulting in a situation 

where stand growth is being offset or exceeded by decay. Even-aged clear cutting is being prescribed to preclude or 

minimize the risk of windthrow post harvest, promote natural regeneration by opening up the canopy, and minimize defect 

and disease in the future stand to the maximum extent possible.

 TIMBER/LOGGING:

Alternatives 2, 3, 4: This unit is planned for a combination of shovel and cable yarding. Cable settings are planned for uphill 

yarding to landings on the proposed temporary road. Shovel settings are planned for yarding to the proposed temporary 

road and the existing NFS road 2030000. 

Alternative 5: This unit is planned for helicopter yarding. Helicopter settings are planned for yarding to a landing on the 

existing NFS road 2030000.

 ENGINEERING/ROADS:

Unit is accessed by a proposed temporary road, totaling 1,900 feet, as displayed on the unit card in Alternatives 2, 3, and 4. 

The eastern portions of the unit are also directly accessed by the existing road 2030000.

 BOTANY:

No Concerns

 FISHERIES:

Streams are tributaries to Steelhead Creek. Streams A1.1R and A1 characteristics do not include project-specific, fieldverified, information.

Stream #: A1 (Steelhead Creek) Class: I, II Flagging: B/W C- Type: MCL, LCM

Concerns: none known

Buffer (RMA): Class I and II for MCL and Class II for LCM greater of 100 feet or the to the top of the side-slope break. 

Alternatives: 2, 3, 4, and 5 Buffer (RAW): Will be determined by IDT during layout.

Protection: Category A 

Stream #: 1.1R Class: II Flagging: B/W C- Type: HCO, MMO, HCM

Concerns: none known

Buffer (RMA): Class II for HCO and HCM greater of 100 feet or to the top of the side-slope break. Class II for MMO greater 

of 120 feet, flood plain, riparian vegetation or soils, or riparian associated wetland fens.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed

Unit

Number 4 Alternatives 2, 3, 4, 5

Summary of Concerns, Responses, BMPs and Mitigation

 INVASIVE SPECIES:

Bull thistle infestations located near unit. These have been treated in the past and are recommended for monitoring and 

follow-up treatments.
Unit 4

Protection: Category A 

Stream#: 1.1R.1R Class: II Flagging: B/W C- Type: HCO

Concerns: none

Buffer (RMA): Class II for HCO greater of 100 feet to the top of side-slope break. 

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed

Protection: Category A 

Stream#: 1.3L Class: I , II, IV Flagging: B/W, G/W C- Type: MMS, MMO, HCO 

Concerns: blowdown

Buffer (RMA): Class I and II for MMS and MMO greater of 120 feet, flood plain, riparian vegetation or soils, or riparian 

associated wetland fens. Class II for HCO greater of 100 feet or to the top of the side-slope break. Class IV for HCO none.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed.

Protection: Category A and C 

Stream#: A1.1R Class: II Flagging: B/W C- Type: MCS

Concerns: none

Buffer (RMA): Class II for MCS greater of 100 feet or to the top of the side-slope break.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed

Protection: Category A 

All other streams in unit: Class: IV Flagging G/W C- Type: HC or MM

Buffer (RMA): none Buffer (RAW): no review needed.

Protection: Category C

Temporary roads for Unit 4: Alternatives 2, 3, and 4 -- Two Class II and one Class IV stream crossings. Dolly Varden were 

identified at the proposed Class II crossings and will require a timing window of June 15 to September 1. If any additional 

crossings are found they will be approved by the USFS, in consultation with fisheries biologist or hydrologist, prior to 

construction (BMP 14.17). The Class II crossing will be designed to provide fish passage using a log culvert or bridge, will be 

installed under current timing constrictions, and concurrence from the State will be solicited prior to starting the work. During 

construction of temporary roads implement BMPs 12.17, 13.10, 13.11, 13.16, 14.14, 14.3, and 14.5, 14.20, and 14.8.

 GEOLOGY/KARST:

No Concerns

 HERITAGE RESOURCES:

This unit was investigated per the third amended interagency Programmatic Agreement (PA) for historic properties. As 

specified by the PA, any potential adverse effect on historic properties (if any) was mitigated and portions of the Area of 

Potential Effect will be monitored by a qualified heritage specialist during and/or after actual ground disturbance.

 SCENERY:

The Scenic Integrity Objective for this unit is Very Low. The unit is Not Seen from any Visual Priority Travel Route or Use 

Area and is in Timber Production LUD. There are no scenery resource concerns.

 RECREATION:

No concerns.

 SOILS/WETLANDS:

Slopes generally range from 10 to 50% with many small knobs throughout the unit. Forested wetlands are dominant 

throughout the unit. There are approximately 4 acres (9% of the unit) of emergent short sedge/forested wetland complex in 

the southeastern corner of the unit (BMP 12.5). The soils and wetlands are suitable for shovel yarding and a minimum of 

partial suspension cable or helicopter yarding. All logging systems should follow BMPs 12.5, 13.2 and 13.9. Where shovel is 

used, the shovel operator should avoid the small non-forested areas of the unit to prevent rutting. Slopes over 25% gradient 

may not be suitable for shovel yarding under some soil moisture conditions. Use care when approving shovel yarding on 

slopes over 25% gradient. Avoid track slippage and rutting. 

Alternatives 2, 3, and 4: A temporary road will impact about 1/2 acre of wetland inside the unit and 3/4 acre of wetland 

outside the unit. Wetland avoidance is not feasible due to harvest on forested wetlands. Follow BMPs 12.5 and 14.9. Provide 

adequate cross drainage, remove drainage structures, and close road after harvest (BMP 14.9).

 WILDLIFE:

Unit includes average snow deer winter range (entire unit), some of which is also deep snow marten habitat (northern 3⁄4 of 

unit). Legacy standard and guideline does not apply in this VCU.
929

2030120

2030000

2030100

2030110

1.1L

1.1R.1R

1.1R

1.1 L

2.1L

1.3L

1.1L.1 L

1.3 L

1.1R

1.3L.1L

1.1L.1R

A1

A1.1R

Steelhead

1.1L.1R.1R

2.1L

A

1.1R.1L

2000

1987

1993

1988

1990

1990

1986

1987

1990

1983

1990

1990

1995

1986

1987

2

4

5

6

1

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 004 Alternative 2 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Partial Cut

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

595

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RR

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929

2030120

2030000

2030100

2030110

1.1L

1.1R.1R

1.1R

1.1 L

2.1L

1.3L

1.1L.1 L

1.3 L

1.1R

1.3L.1L

1.1L.1R

A1

A1.1R

Steelhead

1.1L.1R.1R

2.1L

A

1.1R.1L

2000

1987

1993

1988

1990

1990

1986

1987

1990

1983

1990

1990

1995

1986

1987

2

4

5

6

1

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 004 Alternative 3 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

595

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt3.mxd 14 July 2012

RR

SR
2030100

2030120

2030110

2030000

929

1.1L

1.1R.1R

1.1R

2.1 L

1.3L

1.1L.1 L

1.3 L

1.1R

1.3L.1L

1.1L.1R

A1

A1.1R

Steelhead

1.1L.1R.1R

A

2.1L

1.1 L

1.1R.1L

1987

1993

1988

1990

2000

1986

1987

1990

1983

1990

1990

1990

1995

1986

1987

2

4

6

1

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 004 Alternative 4 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

595

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt4.mxd 20 March 2012

RR

SR
2030100

2030120

2030110

2030000

929

1.1L

1.1R.1R

1.1R

2.1 L

1.3L

1.1L.1 L

1.3 L

1.1R

1.3L.1L

1.1L.1R

A1

A1.1R

Steelhead

1.1L.1R.1R

A

2.1L

1.1 L

1.1R.1L

1987

1993

1988

1990

2000

1986

1987

1990

1983

1990

1990

1990

1995

1986

1987

2

4

5

6

1

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 004 Alternative 5 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Sytematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

595

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt5.mxd 14 July 2012

RR

SR
Unit 5

Total Unit

Acres:

30.6 Prescription: Clearcut

VCU

Number:

595 Harvest

System:

Cable, Shovel

Helicopter

Net Harvest

Volume

(MBF):

765

LUD:

Timber Production

 SILVICULTURE:

Existing Condition: Unit 5 has old-growth stand structure. In the hemlock stem decay is heavy and mistletoe is moderate. 

Alaska cedar decline is occurring in the stand. Windthrow risk is moderate. 

Silvicultural Objective/Desired Condition: The desired condition for this stand is a highly productive, healthy, wind firm stand 

grown for timber management that retains residual trees as needed to meet standards and guides or other objectives. 

Silvicultural Prescription: Even-aged Management - Clearcut

This stand is being recommended for harvest at this time because it is not expected to obtain the desired condition given the 

current growth trajectory. Trees are over-mature with moderate stem decay and defect resulting in a situation where stand 

growth is being offset by decay. Even-aged clear cutting is being prescribed to preclude or minimize the risk of windthrow 

post harvest, promote natural regeneration by opening up the canopy, and minimize defect and disease in the future stand to 

the maximum extent possible.

 TIMBER/LOGGING:

Alternatives 2, 3: This unit is planned for a combination of shovel and cable yarding. Cable settings are planned for uphill 

yarding to landings on the proposed NFS road 2030111. Shovel settings are planned for yarding to the proposed NFS road 

2030111 and existing NFS road 2030110.

Alternative 5: Unit is planned for helicopter yarding to the northernmost temporary road accessing unit 6 to the south.

 ENGINEERING/ROADS:

Unit is accessed by proposed NFS road 2030111 in Alternative 2 and 3, totaling 2,600 feet, as displayed on the unit card. 

See corresponding road card for detailed information on proposed NFS road. Unit is also accessed by existing NFS road 

2030110 in Alternatives 2 and 3. See road card for detailed information on existing NFS road. Unit will be yarded with a 

helicopter to the temporary road accessing unit 6 to the south in Alternative 5. See unit card for Unit 6 for more information.

 BOTANY:

No Concerns

 FISHERIES:

Streams are tributaries to Steelhead Creek.

Stream#: 1.1L.1R Class: II, III Flagging: B/W, O/W C- Type: HCL, HCV, HCD

Concerns: Blowdown, Active erosion, Steep side-slopes with exposed bedrock

Buffer (RMA): Class II for HCL and HCV greater of 100 feet or to the top of the side-slope break. Class III for HCD and HCV 

to the side-slope break.

Alternatives: 2, 3, and 5 Buffer (RAW): Will be determined by IDT during layout.

Protection: Category A and B 

Stream#: 1.1L.1R.1R Class: II Flagging: B/W C- Type: HCL, HCV

Concerns: Blowdown, Active erosion, Steep side-slopes and exposed bedrock

Buffer (RMA): Class II for HCL and HCV greater of 100 feet or to the top of the side-slope break.

Alternatives: 2, 3, and 5 Buffer (RAW): Will be identified by IDT during layout.

Protection: Category A 

Stream#: 1.1L.1R.1R.1L Class: III, IV Flagging: O/W, G/W C- Type: HCD, HCL

Concerns: Blowdown and active erosion in HCD segment.

Buffer (RMA): Class III for HCD to the top of the side-slope break.

Unit

Number 5 Alternatives 2, 3, 5

Summary of Concerns, Responses, BMPs and Mitigation

 INVASIVE SPECIES:

No Concerns
Unit 5

Alternatives: 2, 3, and 5 Buffer (RAW): no review needed

Protection: Category B

All other streams in unit: Class: IV Flagging G/W C- Type: HC 

Buffer (RMA): none Buffer (RAW): no review needed.

Protection: Category C

 GEOLOGY/KARST:

No Concerns

 HERITAGE RESOURCES:

This unit was investigated per the third amended interagency Programmatic Agreement (PA) for historic properties. As 

specified by the PA, any potential adverse effect on historic properties (if any) was mitigated and portions of the Area of 

Potential Effect will be monitored by a qualified heritage specialist during and/or after actual ground disturbance.

 SCENERY:

The Scenic Integrity Objective for this unit is Very Low. The unit is Not Seen from any Visual Priority Travel Route or Use 

Area and is in Timber Production LUD. There are no scenery resource concerns.

 RECREATION:

No concerns; however, note that this unit is adjacent to the Karta inventoried roadless area to the east.

 SOILS/WETLANDS:

Slopes range from gentle to 50%. Field review of the southern portion indicated forested wetlands are located throughout the 

unit. The soils and wetlands are suitable for partial suspension cable yarding or shovel yarding (or helicopter). All logging 

systems should follow BMPs 12.5, 13.2 and 13.9 . Where shovel yarding is used, the shovel operator should avoid the small 

non-forested areas of the unit to prevent rutting. Slopes over 25% gradient may not be suitable for shovel yarding under 

some soil moisture conditions. Use care when approving shovel yarding on slopes over 25% gradient. Avoid track slippage 

and rutting.

 WILDLIFE:

Unit includes average snow deer winter range (entire unit), some of which is also deep snow marten habitat/deer winter 

range (along western and southern edges). Legacy standard and guideline does not apply in this VCU.

Alternative 4: Unit dropped to maintain connectivity in the Steelhead Drainage and maintain other habitat values.
2030100

2030120

2030110

2030000

2030110

2030111

1.1L.1R.1R.2R

1.3L.1L

1.1L.1R.1R

1.1L.1R

1.1L.1R.1R

1.1L.2L.1L

1.1R.1R

1.1R

1.1L.1R.1R.1L

1.1 L

1.1L.2L

1.3L

1.3 L

Steelhead

1.1L.1R.1R.1R

1.1L.1R.1R

1987

1988

1989

1995

1986

1987

4

5

6

2

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 005 Alternative 2 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Partial Cut

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

595

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt2.mxd 14 July 2012

RR

SR
2030100

2030120

2030110

2030000

2030110

2030111

1.1L.1R.1R.2R

1.3L.1L

1.1L.1R.1R

1.1L.1R

1.1L.1R.1R

1.1L.2L.1L

1.1R.1R

1.1R

1.1L.1R.1R.1L

1.1 L

1.1L.2L

1.3L

1.3 L

Steelhead

1.1L.1R.1R.1R

1.1L.1R.1R

1987

1988

1989

1995

1986

1987

4

5

6

2

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 005 Alternative 3 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

595

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt3.mxd 14 July 2012

RR

SR
2030110

2030000

2030120 2030100

1.1L.2L.1L

1.1R.1R

1.1R

1.1L.1R.1R.1L

1.1 L

1.1L.2L

1.3L

1.3 L

Steelhead

1.1L.1R.1R.1R

1.1L.1R.1R

1.1L.1R.1R.2R

1.3L.1L

1.1L.1R.1R

1.1L.1R

1.1L.1R.1R

1987

1988

1987

1986

1995

1989

2

4

5

6

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 005 Alternative 5 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Sytematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

595

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt5.mxd 14 July 2012

RR

SR
Unit 6

Total Unit

Acres:

2, 3, 5 - 89.3

4 - 65.0

Prescription: Clearcut

VCU

Number:

595 Harvest

System:

Cable, Shovel

Net Harvest

Volume

(MBF):

2,3,5 - 

2,360

4 - 1,718

LUD:

Modified Landscape, 

Timber Production

 SILVICULTURE:

Existing Condition: Unit 6 has old-growth stand structure. Hemlock mistletoe is moderate overall with some areas having high 

occurrence. Hemlock stem decay is very prevalent with high overall rates. Defect is average in other species. Patchy 

blowdown is prevalent throughout the unit. The windthrow risk rating for the unit is high. 

Silvicultural Objective/Desired Condition: The desired condition for this stand is a highly productive, healthy, windfirm stand 

grown for timber management that retains residual trees as needed to meet standards and guides or other objectives.

Silvicultural Prescription: Even-age Management - Clearcut 

This stand is being recommended for harvest at this time because it is not expected to obtain the desired condition given the 

current growth trajectory. This stand is over-mature with moderate to heavy stem decay and defect resulting in a situation 

where stand growth is being offset by decay. Even-aged clear cutting is being prescribed to preclude or minimize the risk of 

windthrow post harvest, promote natural regeneration by opening up the canopy, and minimize defect and disease in the 

future stand to the maximum extent possible.

 TIMBER/LOGGING:

This unit is planned for a combination of shovel and cable yarding. Cable settings are planned for uphill and downhill yarding 

to landings on the proposed temporary roads. Shovel settings are planned for yarding to the proposed temporary roads, and 

the existing roads NFS road 2030100 and NFS road 2030110.

 ENGINEERING/ROADS:

Unit is accessed by four proposed temporary roads in Alternatives 2, 3, and 5, totaling 2,300 feet, as displayed on the unit 

card. Unit is accessed by three proposed temporary road in Alternative 4, totaling 1,500 feet, as displayed on the unit card. 

Existing NFS road 2030110 is used to access the unit in Alternatives 2, 3, and 5, and will require reconstruction. See 

corresponding road card for detailed information on existing road reconstruction.

 BOTANY:

No Concerns

 FISHERIES:

Streams are tributaries to Steelhead Creek. Stream 1.1L.1R (MMS) characteristics do not include project-specific, fieldverified, information.

Stream#: 1.1L.1R Class: II Flagging: B/W C- Type: MMS, HCL

Concerns: none known

Buffer (RMA): Class II for MMS greater of 120 feet, flood plain, riparian vegetation, or soils, or riparian associated wetland 

fens. Class II for HCL greater of 100 feet or to the top of side-slope break.

Alternatives: 2, 3, and 5 Buffer (RAW): will be identified by IDT during layout .

Alternatives: 4 Buffer (RAW): no review needed.

Protection: Category A 

Stream#: 1.1L.1R.1R Class: II Flagging: B/W C- Type: HCL, HCV

Concerns: blowdown , active erosion, steep side-slopes and exposed bedrock

Buffer (RMA): Class II for HCL and HCV greater of 100 feet or to the top of the side-slope break. 

Alternatives: 2, 3, 4 and 5 Buffer (RAW): will be identified by IDT during layout.

Protection: Category A 

Stream#: 1.1L.1R.1R.1R Class: III, IV Flagging: O/W, G/W C- Type: HCD, MMO 

Unit

Number 6 Alternatives 2, 3, 4, 5

Summary of Concerns, Responses, BMPs and Mitigation

 INVASIVE SPECIES:

Infestation of narrowleaf hawksbeard located just west of unit along road 2030100. Recommend treatment and monitoring of 

infestation.
Unit 6

Concerns: blowdown, active erosion

Buffer (RMA): Class III for HCD to the top of the side-slope break. Class IV for MMO none.

Alternatives: 2, 3, 4 and 5 Buffer (RAW): Will be identified by IDT during layout.

Protection: Category A and C 

Stream#: 1.13L Class: II, IV Flagging: B/W, G/W C- Type: HCO

Concerns: blowdown

Buffer (RMA): Class II for HCO greater of 100 feet or to the top of the side-slope break. Class IV for HCO none. 

Alternatives: 2, 3, 4 and 5 Buffer (RAW): will be identified by IDT during layout.

Protection: Category A and C 

All other streams in unit: Class: IV Flagging G/W C- Type: HC or MM

Buffer (RMA): none Buffer (RAW): no review needed.

Protection: Category C 

Temporary roads for Unit 6: All Alternatives - No known stream crossings. If any stream crossings are found, crossing 

structures and locations will be approved by USFS, in consultation with fisheries biologist or hydrologist, prior to construction 

(BMP 14.17). During construction of temporary roads implement BMPs 12.17, 13.10, 13.11, 13.16, 14.3, and 14.5.

 GEOLOGY/KARST:

No Concerns

 HERITAGE RESOURCES:

This unit was investigated per the third amended interagency Programmatic Agreement (PA) for historic properties. As 

specified by the PA, any potential adverse effect on historic properties (if any) was mitigated and portions of the Area of 

Potential Effect will be monitored by a qualified heritage specialist during and/or after actual ground disturbance.

 SCENERY:

The Scenic Integrity Objectives (SIO) of this unit are Low and Very Low, with the Low SIO covering 45 to 49 acres depending 

on the alternative. The Low SIO area is in Modified Landscape LUD and Middleground distance zone, while the Very Low is 

in Timber Production LUD. The Low SIO area is primarily from 3/4 to 1-1/4 miles from the Klawock-Control Lake highway, 

which is a Visual Priority Travel Route.

 RECREATION:

No Concerns.

 SOILS/WETLANDS:

Slopes average from 20 to 70%, with the higher slopes prevalent in the southern portion of the unit. Forested wetlands are 

dominant where the slopes are less than 35% (mainly in the northern and eastern portions of unit). The soils and wetlands 

are suitable for partial suspension cable yarding or shovel yarding. All logging systems should follow BMPs 12.5, 13.2 and 

13.9. Where shovel yarding is used, the shovel operator should avoid the small non-forested areas of the unit to prevent 

rutting. Slopes over 25% gradient may not be suitable for shovel yarding under some soil moisture conditions. Use care 

when approving shovel yarding on slopes over 25% gradient.

No mapped wetlands are crossed by the temporary roads. If wetlands are crossed because avoidance is not feasible, follow 

BMPs 12.5 and 14.9. Provide adequate cross drainage, remove drainage structures, and close road after harvest (BMP 14.9).

 WILDLIFE:

Unit includes average snow deer winter range (entire unit), some of which is also deep snow marten habitat/deer winter 

range (western 3⁄4 of unit). Legacy standard and guideline does not apply in this VCU. 

Alternative 4: Portion of unit between Units 4 and 5 dropped to maintain connectivity in Steelhead Drainage; marten/deer 

habitat in portion that was dropped.
2030000

2030000

2030120

2030100

2030111

2030110

1.19L

1.3L

1.20L

1.1L.1R.1R.1L

1.21L.1L

1.3L

1.1L.1R

1.21L.1L.1R

1.21L

1.1L.1R.1R

1.1L.1R.1R.2R

1.3L.1L

1.1L.1R.1R

1.1L.1R.1R.1R

Steelhead

1.1L.1R.1R

1988

1986

1995

1989

1987

4

5

6

7

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 006 Alternative 2 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Partial Cut

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

595

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt2.mxd 14 July 2012

RR

SR
2030000

2030000

2030120

2030100

2030111

2030110

1.19L

1.3L

1.20L

1.1L.1R.1R.1L

1.21L.1L

1.3L

1.1L.1R

1.21L.1L.1R

1.21L

1.1L.1R.1R

1.1L.1R.1R.2R

1.3L.1L

1.1L.1R.1R

1.1L.1R.1R.1R

Steelhead

1.1L.1R.1R

1988

1986

1995

1989

1987

4

5

6

7

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 006 Alternative 3 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

595

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt3.mxd 14 July 2012

RR

SR
2030110

2030000

2030000

2030120

2030100

1.19L

1.3L

1.20L

1.1L.1R.1R.1L

1.21L.1L

1.3L

1.1L.1R

1.21L.1L.1R

1.21L

1.1L.1R.1R

1.1L.1R.1R.2R

1.3L.1L

1.1L.1R.1R

1.1L.1R.1R.1R

Steelhead

1.1L.1R.1R

1988

1986

1995

1989

1987

4

6

7

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 006 Alternative 4 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

595

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt4.mxd 20 March 2012

RR

SR
2030110

2030000

2030000

2030120

2030100

1.19L

1.3L

1.20L

1.1L.1R.1R.1L

1.21L.1L

1.3L

1.1L.1R

1.21L.1L.1R

1.21L

1.1L.1R.1R

1.1L.1R.1R.2R

1.3L.1L

1.1L.1R.1R

1.1L.1R.1R.1R

Steelhead

1.1L.1R.1R

1988

1986

1995

1989

1987

4

5

6

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 006 Alternative 5 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Sytematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

595

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Unit 7

Total Unit

Acres:

2, 3 - 12.0

4 - 7.1

Prescription: Clearcut

VCU

Number:

595 Harvest

System:

Cable, Shovel

Net Harvest

Volume

(MBF):

2, 3 - 211

4 - 125 LUD:

Timber Production

 SILVICULTURE:

Existing Condition: Unit 7 is an old-growth structured stand of predominantly western hemlock with scattered Sitka spruce 

and areas of western redcedar. The unit has generally low site value with overall small diameter trees. Defect in the western 

hemlock is generally moderate to high. The occurrence of mistletoe is moderate with most overstory western hemlock 

infected. Past wind damage has affected available volume in this unit. Windthrow risk is moderate to high overall. All past 

harvest areas adjacent to or near this unit are adequately restocked with trees at least 5 feet tall meeting NFMA requirements 

for no longer being considered an opening.

Silvicultural Objective/Desired Condition: The desired condition for this stand is a highly productive, healthy, windfirm stand 

grown for timber management that retains residual trees as needed to meet standards and guides or other objectives. 

Silvicultural Prescription: Even-aged Management - Clearcut

This stand is being recommended for harvest at this time because it is not expected to obtain the desired condition given the 

current growth trajectory. This stand is over-mature with moderate to heavy stem decay and defect resulting in a situation 

where stand growth is being offset or exceeded by decay. Even-aged clear cutting is being prescribed to preclude or 

minimize the risk of windthrow post harvest, promote natural regeneration by opening up the canopy, and minimize defect 

and disease in the future stand to the maximum extent possible. A large portion of the original planned unit was deferred in 

order to maintain an uncut logical setting between units 6, 7 and 8. The combination of these units as originally planned 

would have exceeded the allowable NFMA opening size. Any unit adjustments during presale should maintain this logical 

setting.

 TIMBER/LOGGING:

This unit is planned for a combination of shovel and cable yarding. Cable settings are planned for uphill yarding to landings 

on the NFS road 2030120. Shovel settings are planned for yarding to the existing road NFS road 2030120.

 ENGINEERING/ROADS:

No Proposed Road Construction.

 BOTANY:

No Concerns

 FISHERIES:

Streams are tributaries to Steelhead Creek. 

Stream#: 1(Steelhead Creek) Class: II Flagging: B/W C- Type: MMM, FPL

Concerns: blowdown 

Buffer (RMA): Class II - greater of 120 (MMM) and 130 feet (FPL), flood plain, riparian vegetation or soils, or riparian 

associated wetland fens.

Alternatives: 2, 3, and 4 Buffer (RAW): Will be identified by IDT during layout.

Protection: Category A 

Stream#: 1.19L Class: III, IV Flagging: O/W, G/W C- Type: HCM, HCL

Concerns: Steep side-slopes with shallow soils and exposed bedrock, blowdown, active erosion, and failed debris dams in 

Class III portion of stream.

Buffer (RMA): Class III for HCM to the top of the side-slope break. Class IV for HCL none.

Alternatives: 2, 3, and 4 Buffer (RAW ): no review needed

Protection: Category A and C 

Stream#: 1.21L Class: II, III Flagging: B/W, O/W C- Type: FPL, MMS, HCM 

Unit

Number 7 Alternatives 2, 3, 4

Summary of Concerns, Responses, BMPs and Mitigation

 INVASIVE SPECIES:

No Concerns
Unit 7

Concerns: none

Buffer (RMA): Class II - greater of 120 feet (MMS) and 130 feet (FPL), flood plain, riparian vegetation or soils, or riparian 

associated wetland fens. Class II for HCM greater of 100 feet or to the top of the side-slope break. Class III HCM to to the 

top of side-slope break.

Alternatives: 2, 3, and 4 Buffer (RAW): Will be identified by IDT during layout.

Protection: Category A and B 

Stream#: 1.21L.1L Class: II Flagging: B/W C- Type: HCM, MMO

Concerns: none

Buffer (RMA): Class II for HCM greater of 100 feet or to the top of the side-slope break. Class II for MMO greater of 120 feet, 

flood plain, riparian vegetation or soils, or riparian associated wetland fens. 

Alternatives: 2, 3, and 4 Buffer (RAW): no review needed.

Protection: Category A 

Stream#: 1.22L Class: II, III, IV Flagging: B/W, O/W, G/W C- Type: MMS, HCL, HCM, HCD

Concerns: blowdown, active erosion

Buffer (RMA): Class II for MMS greater of 120 feet, flood plain, riparian vegetation or soils, or riparian associated wetland 

fens. Class II for HCM and HCL greater of 100 feet or to the top of the side-slope break. Class III for HCM and HCD to the top 

of side-slope break. Class IV for HCL none.

Alternatives: 2 and 3 Buffer (RAW): Will be identified by IDT during layout. 

Alternative: 4 Buffer (RAW): no review needed

Protection: Category A, B, and C 

Stream#: 1.22L.1L Class: II, IV Flagging: B/W, G/W C- Type: HCL, HCM 

Concerns: none

Buffer (RMA): Class II for HCL greater of 100 feet or to the top of the side-slope break. Class IV for HCL none.

Alternatives: 2, 3, and 4 Buffer (RAW): no review needed

Protection: Category A 

All other streams in unit: Class: IV Flagging: G/W C- Type: HC or MM

Buffer (RMA): none

Alternatives: 2, 3, and 4 Buffer (RAW): no review needed

Protection: Category C

 GEOLOGY/KARST:

No Concerns

 HERITAGE RESOURCES:

This unit was investigated per the third amended interagency Programmatic Agreement (PA) for historic properties. As 

specified by the PA, any potential adverse effect on historic properties (if any) was mitigated and portions of the Area of 

Potential Effect will be monitored by a qualified heritage specialist during and/or after actual ground disturbance.

 SCENERY:

The Scenic Integrity Objective for this unit is Very Low. The unit is Not Seen from any Visual Priority Travel Route or Use 

Area and is in Timber Production LUD. There are no scenery resource concerns.

 RECREATION:

Harvest activities in this unit would be visible to recreationists using the existing road. Recreationists may also encounter 

logging traffic on the road. Harvest in this unit would be consistent with the applicable LUD (Timber Production) and would 

not change existing ROS settings. Harvest has occurred along the road system in the recent past (less than 30 years). No 

treatment is planned under Alternative 5.

 SOILS/WETLANDS:

Slopes range from 15 to 55% in the southern block, 8 to 35% in the center block, and are nearly level slopes in the northern 

block. Forested wetlands are dominant where the slopes are less than 35%. The soils and wetlands are suitable for a 

minimum of partial suspension cable yarding or shovel yarding. All logging systems should follow BMPs 12.5, 13.2 and 13.9. 

Where shovel is used, the shovel operator should avoid the small non-forested areas of the unit to prevent rutting. Slopes 

over 25% gradient may not be suitable for shovel yarding under some soil moisture conditions. Use care when approving 

shovel yarding on slopes over 25% gradient.

There is no prosed road construction.

 WILDLIFE:
Unit 7

Unit includes average snow deer winter range (entire unit). Legacy standard and guideline does not apply in this VCU.

Alternative 4: Portion of unit south of stream dropped to maintain connectivity in Steelhead Drainage.
2030120

2030100

1.22L.1L

1.1L.1R.1R

L.1L

1.21L.1L.1R

1.21L

1.1L.1R.1R.1R

1.4R

L

1.22L

1.4R

1.21L

L.1L

1.19L

2L

2L.1R

1.20L

1.1L.1R.1R.2R

2L

L

1.21L.1L

1.22L

L

1

1.22L

A1

L.1L.1L

1988

1989

1987

1990

2001

7

8

6

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 007 Alternative 2 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Partial Cut

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

595

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt2.mxd 14 July 2012

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2030120

2030100

1.22L.1L

1.1L.1R.1R

L.1L

1.21L.1L.1R

1.21L

1.1L.1R.1R.1R

1.4R

L

1.22L

1.4R

1.21L

L.1L

1.19L

2L

2L.1R

1.20L

1.1L.1R.1R.2R

2L

L

1.21L.1L

1.22L

L

1

1.22L

A1

L.1L.1L

1988

1989

1987

1990

2001

7

8

6

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 007 Alternative 3 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

595

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt3.mxd 14 July 2012

RR

SR
2030120

2030100

1.22L.1L

1.1L.1R.1R

L.1L

1.21L.1L.1R

1.21L

1.1L.1R.1R.1R

1.4R

L

1.22L

1.4R

1.21L

L.1L

1.19L

2L

2L.1R

1.20L

1.1L.1R.1R.2R

2L

L

1.21L.1L

1.22L

L

1

1.22L

A1

L.1L.1L

1988

1989

1987

1990

2001

7

8

6

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 007 Alternative 4 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

595

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt4.mxd 20 March 2012

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Unit 8

Total Unit

Acres:

2, 3, 4 - 59.0

5 - 44.6

Prescription: Clearcut

VCU

Number:

595 Harvest

System:

Cable, Shovel,

Helicopter

Net Harvest

Volume

(MBF):

2, 3, 4 - 

1,498

5 - 1,133

LUD:

Modified Landscape, 

Timber Production

 SILVICULTURE:

Existing Condition: Unit 8 is a mosaic of old growth and two-aged stand structure due to repeated wind damage dating back 

approximately 50 years. The areas below the road are of a lower site value with overall smaller diameter trees. Defect in the 

western hemlock is generally moderate to high in the stand overall and greatest below the road. The occurrence of mistletoe 

is moderate with most overstory western hemlock infected. Past wind damage has affected available volume in this stand.. 

Areas of weak timber volume are found in the vicinity of the muskeg and in heavy windthrow areas in the upper elevations. 

Windthrow risk is high across the stand. All past harvest areas adjacent to or near this unit are adequately restocked with 

trees at least 5 feet tall meeting NFMA requirements for no longer being considered an opening.

Silvicultural Objective/Desired Condition: The desired condition for this stand is a highly productive, healthy, windfirm stand 

grown for timber management that retains residual trees as needed to meet standards and guides or other objectives.

Silvicultural Prescription: Even-age Management - Clearcut

This stand is being recommended for harvest at this time because it is not expected to obtain the desired condition given the 

current growth trajectory. This stand is high wind risk with moderate stem decay and defect resulting in a situation where 

stand growth is being offset by weather damage and decay. Even-aged clear cutting is being prescribed to preclude or 

minimize the risk of windthrow post harvest, promote natural regeneration by opening up the canopy, and minimize defect 

and disease in the future stand to the maximum extent possible.

 TIMBER/LOGGING:

Alternatives 2, 3, 4: This unit is planned for a combination of shovel and cable yarding. Cable settings are planned for uphill 

and downhill yarding to landings on the eastern proposed temporary road and the existing NFS road 2030120. Shovel 

settings are planned for yarding to the proposed temporary road and the existing NFS road 2030120. 

Alternative 5: This unit is planned for a combination of cable, shovel, and helicopter yarding. All settings in this alternative will 

be yarded to the existing NFS road 2030120.

 ENGINEERING/ROADS:

Unit is accessed by a proposed temporary road in Alternatives 2, 3, and 4, totaling 2,100 feet, as displayed on the unit card. 

Approximately 800 feet of this temporary road uses a decommisioned road bed as a base. Existing NFS road 2030120 is 

also used to access the unit, and is currently open.

 BOTANY:

No Concerns

 FISHERIES:

Streams are tributaries to Steelhead Creek. Stream 1 characteristics do not include project-specific, field-verified, 

information.

Stream#: 1 (Steelhead Creek) Class: II Flagging: B/W C- Type: FPL 

Concerns: blowdown

Buffer (RMA): Class II for FPL greater of 130 feet, flood plain, riparian vegetation or soils, or riparian associated wetland fens.

Alternatives: 2, 3, and 4 Buffer (RAW): Will be identified by IDT during layout.

Alternative: 5 Buffer (RAW): no review needed

Protection: Category A 

Stream#: 1.22L Class: II, III, IV	 Flagging: B/W, O/W , GW C- Type: MMS, HCL, HCM, HCD

Concerns: blowdown, active erosion

Unit

Number 8 Alternatives 2, 3, 4, 5

Summary of Concerns, Responses, BMPs and Mitigation

 INVASIVE SPECIES:

No Concerns
Unit 8

Buffer (RMA): Class II for MMS greater of 120 feet, flood plain, riparian vegetation or soils, or riparian associated wetland 

fens. Class II for HCM and HCL greater of 100 feet orto the top of the side-slope break. Class III for HCM and HCD to the 

top of the side-slope break. Class IV for HCL none.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): Will be identified by IDT during layout.

Protection: Category A, B, and C 

Stream#: 2L Class: II, IV Flagging: B/W, G/W C- Type: HCO

Concerns: none

Buffer (RMA): Class II for HCO greater of 100 feet or to the top of the side-slope break. Class IV for HCO none.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed.

Protection: Category A and C

Stream#: L Class: II, III, IV Flagging: B/W, O/W, G/W C- Type: HCL, HCM, HCO

Concerns: blowdown

Buffer (RMA): Class II for HCL greater of 100 feet or the top of the side-slope break. Class III for HCM to the top of the sideslope break. Class IV for HCO none.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed.

Protection: Category A, B, and C 

Stream#: L.1L Class: II, IV Flagging: B/W, G/W C- Type: MMS, HCL, HCO, HCM

Concerns: blowdown

Buffer (RMA): Class II for MMS greater of 120 feet, flood plain, riparian vegetation or soils, or riparian associated wetland 

fens. Class II for HCL greater of 100 feet or the top of the side-slope break. Class IV for HCO and HCM none.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): Will be identified by IDT during layout.

Protection: Category A and C 

All other streams in unit: Class: IV Flagging: G/W C- Type: HC or MM

Buffer (RMA): none Buffer (RAW): no review needed

Protection: Category C 

Temporary roads (new and reopened decommissioned) for Unit 8: Alternatives 2, 3, and 4 -- Seven class IV stream 

crossings. One crossing would occur for a reopened Decommissioned temporary road. If any additional stream crossings 

are found, crossing structures and locations will be approved by USFS, in consultation with fisheries biologist or hydrologist, 

prior to construction (BMP 14.17). During construction of temporary roads implement BMPs 12.17, 13.10, 13.11, 13.16, 14.3, 

and 14.5.

 GEOLOGY/KARST:

No Concerns

 HERITAGE RESOURCES:

This unit was investigated per the third amended interagency Programmatic Agreement (PA) for historic properties. As 

specified by the PA, any potential adverse effect on historic properties (if any) was mitigated and portions of the Area of 

Potential Effect will be monitored by a qualified heritage specialist during and/or after actual ground disturbance.

 SCENERY:

The Scenic Integrity Objectives (SIO) of this unit are Low and Very Low, with the Low SIO covering about 30 acres. The Low 

SIO area is in Modified Landscape LUD and Middleground distance zone, while the Very Low is in Timber Production LUD. 

The Low SIO area is mostly from 1-3/4 to 2 miles from the Klawock-Control Lake highway, which is a Visual Priority Travel 

Route.

 RECREATION:

Harvest activities in this unit would be visible to recreationists using the existing road. Recreationists may also encounter 

logging traffic on the road. Harvest in this unit would be consistent with the applicable LUDs (Timber Production and 

Modified Landscape) and would not change existing ROS settings. Harvest has occurred along the road system in the 

recent past (less than 30 years).

 SOILS/WETLANDS:

Slopes range from 15% to 55%. Forested wetlands are dominant where the slopes are less than 35%. The soils and 

wetlands are suitable for shovel yarding and a minimum of partial suspension cable or helicopter yarding. All logging 

systems should follow BMPs 12.5, 13.2 and 13.9 . Where shovel yarding is used, the shovel operator should avoid the small 

non-forested areas of the unit to prevent rutting. Slopes over 25% gradient may not be suitable for shovel yarding under 

some soil moisture conditions. Use care when approving shovel yarding on slopes over 25% gradient. Avoid track slippage 

and rutting. 
Unit 8

Alternatives 2, 3, and 4: There are about 1/2 acre (1% of the unit) of emergent short sedge/forested wetland complex in the 

southern end of the unit and 15 acres of forested wetland (26% of the unit) in the western quarter of the unit. 

Alternative 5: There are approximately 2 acres of forested wetland (3% of the unit) along the eastern edge of the unit 

adjacent to the road.

 WILDLIFE:

Unit includes average snow deer winter range (interspersed throughout unit), some of which is also deep snow marten 

habitat/deer winter range. Legacy standard and guideline does not apply in this VCU. Possible goshawk sighting during 2010 

surveys.
2030128

2030120

2030100

1.26L.2

1.22L.1L

L.1L

1.21L.1L.1R

A1

1.26L

1.26L

1.21L

L

1.22L

6L.2R.1R

1.4R

1.21L

L.1L

1.19L

2L

2L.1R

1.2 6L.1R

L

1.20L

1.27L

1.26L.2 R

2L

1.21L.1L

1.22L

L

1.26L.2R.1L

1

1.22L

L.1L.1L

1988

1987

1990

1989

2001

1987

7

8

14

6

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 008 Alternative 2 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Partial Cut

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

595

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RR

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2030128

2030120

2030100

1.26L.2

1.22L.1L

L.1L

1.21L.1L.1R

A1

1.26L

1.26L

1.21L

L

1.22L

6L.2R.1R

1.4R

1.21L

L.1L

1.19L

2L

2L.1R

1.2 6L.1R

L

1.20L

1.27L

1.26L.2 R

2L

1.21L.1L

1.22L

L

1.26L.2R.1L

1

1.22L

L.1L.1L

1988

1987

1990

1989

2001

1987

7

8

14

6

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 008 Alternative 3 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

595

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt3.mxd 14 July 2012

RR

SR
2030120

2030100

2030128

L

L.1L

1.21L.1L.1R

A1

1.26L

1.20L

1.21L

1.26L.2

1.22L

6L.2R.1R

1.4R

1.21L

L.1L

1.19L

2L

2L.1R

1.26L.1R

1.26L

L

1.27L

1.26L.2 R

2L

1.21L.1L

1.22L

L

1.26L.2R.1L

1

1.22L

L.1L.1L

1.22L.1L

1988

1989

1990

1987

2001

1987

7

8

6

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 008 Alternative 4 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

595

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt4.mxd 20 March 2012

RR

SR
2030120

2030100

2030128

L

L.1L

1.21L.1L.1R

A1

1.26L

1.20L

1.21L

1.26L.2

1.22L

6L.2R.1R

1.4R

1.21L

L.1L

1.19L

2L

2L.1R

1.26L.1R

1.26L

L

1.27L

1.26L.2 R

2L

1.21L.1L

1.22L

L

1.26L.2R.1L

1

1.22L

L.1L.1L

1.22L.1L

1988

1989

1990

1987

2001

1987

8

14

6

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 008 Alternative 5 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Sytematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

595

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt5.mxd 14 July 2012

RR

SR
Unit 11

Total Unit

Acres:

17.1 Prescription: Clearcut

VCU

Number:

595 Harvest

System:

Cable, 

Shovel, 

Net Harvest

Volume

(MBF):

380

LUD:

Timber Production

 SILVICULTURE:

Existing Condition: Unit 11 has old-growth stand structure. Mistletoe was heavy across the area with most hemlock having a 

high mistletoe rating. Overall, stand defect was moderate to high. Canopy cover in lower productivity areas ranged down to 

40%. Windthrow has affected stand structure in the eastern point. Alaska-cedar decline was evident just to the north of 

these units as well as in the eastern point. All past harvest areas adjacent to or near this unit are adequately restocked with 

trees at least 5 feet tall and meet NFMA requirements for no longer being considered an opening.

Silvicultural Objective/Desired Condition: The desired condition for this stand is a highly productive, healthy, windfirm stand 

grown for timber management that retains residual trees as needed to meet standards and guides or other objectives. 

Silvicultural Prescription: Even-age Management - Clearcut

This stand is being recommended for harvest at this time because it is not expected to obtain the desired condition given the 

current growth trajectory. Trees are over-mature with moderate to high stem decay and defect resulting in a situation where 

stand growth is being offset or exceeded by decay. Even-aged clear cutting is being prescribed to preclude or minimize the 

risk of windthrow post harvest, promote natural regeneration by opening up the canopy, and minimize defect and disease in 

the future stand to the maximum extent possible.

 TIMBER/LOGGING:

Alternatives 2, 3, 4: This unit is planned for shovel and cable yarding. Shovel settings are planned for yarding to the 

proposed NFS road 2030210, and the existing NFS road 2030200. 

Alternative 5: This unit is planned for a combination of shovel, cable, and helicopter yarding. Shovel and helicopter settings 

are planned for yarding to the existing NFS road 2030200. Cable settings are planned for downhill yarding to landings on the 

existing NFS road 2030200

 ENGINEERING/ROADS:

Unit is accessed by proposed NFS road 2030210, totaling 1,400 feet, as displayed on the unit card. Unit is also accessed by 

existing NFS road 2030200, which must be reconstructed to allow access. See corresponding road cards for detailed 

information.

 BOTANY:

No Concerns

 FISHERIES:

Streams are tributaries to Steelhead Creek. Streams characteristics do not include project-specific, field-verified information.

Stream#: A1 Class: III Flagging: O/W C- Type: HCD

Concerns: none

Buffer (RMA): Class III for HCD to top of the the side-slope break.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed

Protection: Category B 

Stream#: A2 Class: III Flagging: O/W C- Type: HCM

Concerns: none

Buffer (RMA): Class III for HCM to the top of the side-slope break.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed

Protection: Category B

Stream#: A3 Class: III, IV Flagging: O/W, G/W C- Type: HCM, HCO

Unit

Number 11 Alternatives 2, 3, 4, 5

Summary of Concerns, Responses, BMPs and Mitigation

 INVASIVE SPECIES:

No Concerns
Unit 11

Concerns: none

Buffer (RMA): Class III for HCM to the top of the side-slope break. Class IV for HCO none.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed

Protection: Category B and C 

All other streams in unit: Class: IV Flagging: G/W C- Type: HC or MM

Buffer (RMA): none Buffer (RAW): no review needed

Protection: Category C

 GEOLOGY/KARST:

No Concerns

 HERITAGE RESOURCES:

This unit was investigated per the third amended interagency Programmatic Agreement (PA) for historic properties. As 

specified by the PA, any potential adverse effect on historic properties (if any) was mitigated and portions of the Area of 

Potential Effect will be monitored by a qualified heritage specialist during and/or after actual ground disturbance.

 SCENERY:

The Scenic Integrity Objective for this unit is Very Low. The unit is Not Seen from any Visual Priority Travel Route or Use 

Area and is in Timber Production LUD. There are no scenery resource concerns.

 RECREATION:

No concerns

 SOILS/WETLANDS:

Slopes range from gentle to about 50%. Most slopes are less than 30% gradient. The soils and wetlands are suitable for 

partial suspension (minimum) cable or shovel yarding. All logging systems should follow BMPs 12.5, 13.2 and 13.9 . Full 

suspension helicopter yarding, under Alternative 5, would also meet soil and wetland resource concerns (BMPs 12.5, 13.5, 

and 13.9). If shovel yarding, the shovel operator should avoid the small non-forested areas of the unit to prevent rutting. 

Slopes over 25% gradient may not be suitable for shovel yarding under some soil moisture conditions. Use care when 

approving shovel yarding on slopes over 25% gradient. Avoid track slippage and rutting.

There is about 3/4 acre (4% of the unit) of emergent short sedge/forested wetland complex located along the northeastern 

boundary of the unit (BMP 12.5).

 WILDLIFE:

Includes average snow deer winter range (entire unit), some of which is also deep snow marten habitat/deer winter range 

(eastern half of unit). Legacy standard and guideline does not apply in this VCU. Possible goshawk sighting during 2010 

surveys.
2030000

2030205

2030200

2030200

2030210

1.2R

A1.1R

2L

1.4R

1.2R

1.1R

1

A3

A2

1.4R

A1

1991

1990

1983

1987

1999

1991

1990

1990

1987

8

11

12

13

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 011 Alternative 2 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Partial Cut

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

595

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt2.mxd 14 July 2012

RR

SR
2030000

2030205

2030200

2030200

2030210

1.2R

A1.1R

2L

1.4R

1.2R

1.1R

1

A3

A2

1.4R

A1

1991

1990

1983

1987

1999

1991

1990

1990

1987

8

11

12

13

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 011 Alternative 3 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

595

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt3.mxd 14 July 2012

RR

SR
2030000

2030205

2030200

2030200

2030210

1.2R

A1.1R

2L

1.4R

1.2R

1.1R

1

A3

A2

1.4R

A1

1991

1990

1983

1987

1999

1991

1990

1990

1987

8

11

12

13

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 011 Alternative 4 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

595

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt4.mxd 20 March 2012

RR

SR
2030000

2030200

2030205

2030200

1.2R

A1.1R

2L

1.4R

1.2R

1.1R

1

A3

A2

1.4R

A1

1991

1990

1983

1987

1999

1991

1990

1990

1987

8

11

12

13

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 011 Alternative 5 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Sytematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

595

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt5.mxd 14 July 2012

RR

SR
Unit 12

Total Unit

Acres:

14.7 Prescription: Clearcut

VCU

Number:

595 Harvest

System:

Cable, Shovel

Net Harvest

Volume

(MBF):

308

LUD:

Timber Production

 SILVICULTURE:

Existing Condition: Unit 12 has old growth stand structure. In the hemlock, mistletoe infection is moderate. Physical defects 

and stem decays are high in occurrence for all species. Windthrow risk is moderate. All past harvest areas adjacent to or 

near this unit are adequately restocked with trees at least 5 feet tall meeting the reforestation requirements of NFMA. 

Silvicultural Objective/Desired Condition: The desired condition for this stand is a highly productive, healthy, windfirm stand 

grown for timber management that retains residual trees as needed to meet standards and guides or other objectives. 

Silvicultural Prescription: Even-age Management - Clearcut

This stand is being recommended for harvest at this time because it is not expected to obtain the desired condition given the 

current growth trajectory. This stand is over-mature with moderate stem decay and defect resulting in a situation where stand 

growth is being offset or exceeded by decay. Even-aged clear cutting is being prescribed to preclude or minimize the risk of 

windthrow post harvest, promote natural regeneration by opening up the canopy, and minimize defect and disease in the 

future stand to the maximum extent possible.

 TIMBER/LOGGING:

This unit is planned for a combination of shovel and cable yarding. Cable settings are planned for uphill yarding to landings 

on the existing NFS road 2030205. Shovel settings are planned for yarding to the existing NFS road 2030000 and 

2030205.

 ENGINEERING/ROADS:

No proposed road construction.

 BOTANY:

No Concerns

 FISHERIES:

Streams are tributaries to Steelhead Creek.

Stream#: 1.1R Class: III, IV Flagging: O/W, G/W C- Type: HCM , HCL

Concerns: none

Buffer (RMA): Class III for HCM to the top of the side-slope break. Class IV for HCL none.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed

Protection: Category B and C 

All other streams in unit: Class: IV Flagging: G/W C- Type: HC 

Buffer (RMA): none Buffer (RAW): no review needed.

Protection: Category C

 GEOLOGY/KARST:

No Concerns

 HERITAGE RESOURCES:

This unit was investigated per the third amended interagency Programmatic Agreement (PA) for historic properties. As 

specified by the PA, any potential adverse effect on historic properties (if any) was mitigated and portions of the Area of 

Potential Effect will be monitored by a qualified heritage specialist during and/or after actual ground disturbance.

 SCENERY:

Unit

Number 12 Alternatives 2, 3, 4, 5

Summary of Concerns, Responses, BMPs and Mitigation

 INVASIVE SPECIES:

No Concerns
Unit 12

The Scenic Integrity Objective for this unit is Very Low. The unit is Not Seen from any Visual Priority Travel Route or Use 

Area and is in Timber Production LUD. There are no scenery resource concerns.

 RECREATION:

No Concerns.

 SOILS/WETLANDS:

Slopes range from gentle slopes to about 50%. Forested wetlands are intermixed with uplands. The soils and wetlands are 

suitable for a minimum of partial suspension cable yarding or shovel yarding. All logging systems should follow BMPs 12.5, 

13.2 and 13.9. Where shovel logging is used, the shovel operator should avoid the small non-forested areas of the unit to 

prevent rutting. Slopes over 25% gradient may not be suitable for shovel yarding under some soil moisture conditions. Use 

care when approving shovel yarding on slopes over 25% gradient. Avoid track slippage and rutting.

There is no proposed road construction.

 WILDLIFE:

Unit includes average snow deer winter range (entire unit), some of which is also deep snow marten habitat/deer winter 

range (eastern 2/3 of unit). Legacy standard and guideline does not apply in this VCU.
2030000

2030205

2030200

2030210

A1.1R

1.26L

1.2R

A3

1.2 R

1.27L

1.2R.1 L

Steelhea

1

d

.2R

1.1R

A2

A1

1987

1999

1991

1987

11

12

13

14

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 012 Alternative 2 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Partial Cut

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

595

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt2.mxd 14 July 2012

RR

SR
2030000

2030205

2030200

2030210

A1.1R

1.26L

1.2R

A3

1.2 R

1.27L

1.2R.1 L

Steelhea

1

d

.2R

1.1R

A2

A1

1987

1999

1991

1987

11

12

13

14

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 012 Alternative 3 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

595

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt3.mxd 14 July 2012

RR

SR
2030000

2030205

2030200

2030210

A1.1R

1.26L

1.2R

A3

1.2 R

1.27L

1.2R.1 L

Steelhea

1

d

.2R

1.1R

A2

A1

1987

1999

1991

1987

11

12

13

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 012 Alternative 4 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

595

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt4.mxd 20 March 2012

RR

SR
2030000

2030205

2030200

A1.1R

1.26L

1.2R

A3

1.2 R

1.27L

1.2R.1 L

Steelhea

1

d

.2R

1.1R

A2

A1

1987

1999

1991

1987

11

12

13

14

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 012 Alternative 5 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Sytematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

595

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt5.mxd 14 July 2012

RR

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Unit 13

Total Unit

Acres:

6.8 Prescription: Clearcut

VCU

Number:

595 Harvest

System:

Cable

Net Harvest

Volume

(MBF):

121

LUD:

Timber Production

 SILVICULTURE:

Existing Condition: Unit 13 has old growth stand structure. In the hemlock mistletoe and stem decay are moderate. Alaskancedar decline is present but light. Physical defects and stem decays are moderate in occurrence for all species. Windthrow 

risk is moderate. All past harvest areas adjacent to or near this unit are adequately restocked with trees at least 5 feet tall 

meeting the reforestation requirements of NFMA. 

Silvicultural Objective/Desired Condition: The desired condition for this stand is a highly productive, healthy, windfirm stand 

grown for timber management that retains residual trees as needed to meet standards and guides or other objectives. 

Silvicultural Prescription: Even-age Management - Clearcut

This stand is being recommended for harvest at this time because it is not expected to obtain the desired condition given the 

current growth trajectory. This stand is over-mature with moderate stem decay and defect resulting in a situation where stand 

growth is being offset or exceeded by decay. Even-aged clear cutting is being prescribed to preclude or minimize the risk of 

windthrow post harvest, promote natural regeneration by opening up the canopy,and disease in the future stand to the 

maximum extent possible.

 TIMBER/LOGGING:

This unit is planned for uphill cable yarding to landings on the existing NFS road 2030000. Guyline anchors will likely be 

needed southwest of road.

 ENGINEERING/ROADS:

No proposed road construction.

 BOTANY:

No Concerns

 FISHERIES:

Streams are tributaries to Steelhead Creek. 

Stream#: 1.2R Class: II, III Flagging: B/W, O/W C- Type: HCL, HCM, HCD

Concerns: none

Buffer (RMA): Class II for HCM greater of 100 feet or to the top of the side-slope break. Class III for HCD and HCL to the top 

of the side-slope break.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): will be identified by IDT during layout.

Protection: Category A and B 

Stream#: 1.2R.1L Class: III Flagging: O/W C- Type: HCD

Concerns: steep side-slopes

Buffer (RMA): Class III for HCD to the top of the side-slope break. 

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed

Protection: Category B

 GEOLOGY/KARST:

No Concerns

 HERITAGE RESOURCES:

This unit was investigated per the third amended interagency Programmatic Agreement (PA) for historic properties. As 

specified by the PA, any potential adverse effect on historic properties (if any) was mitigated and portions of the Area of 

Potential Effect will be monitored by a qualified heritage specialist during and/or after actual ground disturbance.

Unit

Number 13 Alternatives 2, 3, 4, 5

Summary of Concerns, Responses, BMPs and Mitigation

 INVASIVE SPECIES:

No Concerns
Unit 13

 SCENERY:

The Scenic Integrity Objective for this unit is Very Low. The unit is Not Seen from any Visual Priority Travel Route or Use 

Area and is in Timber Production LUD. There are no scenery resource concerns.

 RECREATION:

No Concerns.

 SOILS/WETLANDS:

Slopes range from about 15% to 65%. The steepest portion is a small rock outcrop above the Class 3 stream on the south 

side. The unit is generally well drained and no wetlands have been mapped in the unit. A minimum of partial suspension with 

cable yarding will meet soil and wetland resource concerns (BMPs 12.5, 13.5, and 13.9).

There is no proposed road construction.

 WILDLIFE:

Unit includes average snow deer winter range (entire unit). Legacy standard and guideline does not apply in this VCU.
2030205

2030120

2030000

1.29

A1.1R

1.27L

1.27 L.1R

1.2R

1.30L

1.2 R

1.2R.1 L

1.27L

1.2R

1.1R

A1

1

A2

Steelhead

1987

1991

1991

1987

11

12

13

14

15

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 013 Alternative 2 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Partial Cut

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

595

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt2.mxd 14 July 2012

RR

SR
2030205

2030120

2030000

1.29

A1.1R

1.27L

1.27 L.1R

1.2R

1.30L

1.2 R

1.2R.1 L

1.27L

1.2R

1.1R

A1

1

A2

Steelhead

1987

1991

1991

1987

11

12

13

14

15

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 013 Alternative 3 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

595

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt3.mxd 14 July 2012

RR

SR
2030205

2030120

2030000

1.29

A1.1R

1.27L

1.27 L.1R

1.2R

1.30L

1.2 R

1.2R.1 L

1.27L

1.2R

1.1R

A1

1

A2

Steelhead

1987

1991

1991

1987

11

12

13

15

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 013 Alternative 4 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

595

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt4.mxd 20 March 2012

RR

SR
2030205

2030120

2030000

1.29

A1.1R

1.27L

1.27 L.1R

1.2R

1.30L

1.2 R

1.2R.1 L

1.27L

1.2R

1.1R

A1

1

A2

Steelhead

1987

1991

1991

1987

11

12

13

14

15

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 013 Alternative 5 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Sytematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

595

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt5.mxd 14 July 2012

RR

SR
Unit 14

Total Unit

Acres:

2, 3 - 78.6

5 - 75.3

Prescription: Clearcut

VCU

Number:

595 Harvest

System:

Cable, Shovel

Net Harvest

Volume

(MBF):

2, 3 - 1,894

5 - 1,816 LUD:

Modified Landscape, 

Timber Production

 SILVICULTURE:

Existing condition: Unit 14 is an old-growth structured mixed species stand. Most of the unit was observed as average timber 

volume with some smaller areas of marginal volume predominantly near the muskeg in center of the unit. In the hemlock, the 

mistletoe rating and occurrence is high and stem decay moderate. Defect appears to be moderate for all species.. Windthrow 

risk is moderate. Part of this unit was deferred to create a break between Unit 14 and parts of Unit 15 combine to meet the 

opening size requirements. All past harvest areas adjacent to or near this unit are adequately restocked with trees at least 5 

feet tall meeting the NFMA requirements for no longer being considered an opening.

Silvicultural Objective/Desired Condition: The desired condition for this stand is a highly productive, healthy, windfirm stand 

grown for timber management that retains residual trees as needed to meet standards and guides or other objectives. 

Silvicultural Prescription: Even-age Management - Clearcut

This stand is being recommended for harvest at this time because it is not expected to obtain the desired condition given the 

current growth trajectory. This stand is over-mature with moderate stem decay and defect resulting in a situation where stand 

growth is being offset or exceeded by decay. Even-aged clear cutting is being prescribed to preclude or minimize the risk of 

windthrow post harvest, promote natural regeneration by opening up the canopy, and minimize defect and disease in the 

future stand to the maximum extent possible.

 TIMBER/LOGGING:

This unit is planned for a combination of shovel and cable yarding. Cable settings are planned for uphill and downhill yarding 

to landings on the two proposed temporary roads and the existing NFS road 2030120. Shovel settings are planned for 

yarding to the proposed temporary road and the existing NFS road 2030120.

 ENGINEERING/ROADS:

Unit is accessed by two proposed temporary roads, totaling 3,500 feet, as displayed on the unit card. Approximately 2,800 

feet of the proposed temporary roads will be constructed over decommissioned road beds.

 BOTANY:

No Concerns

 FISHERIES:

Streams are tributaries to Steelhead Creek. (Streams 1 and 1.29L.2L characteristics do not include project-specific, fieldverified, information)

Stream#: 1 (Steelhead Creek) Class: II Flagging: B/W C- Type: FPL , MMM, MCM

Concerns: none

Buffer (RMA): Class II - greater of 130 (FPL) and 120 feet (MMM), flood plain, riparian vegetation or soils, or riparian 

associated wetland fens. Class II for MCM greater of 100 feet or the top of the side-slope break.

Alternatives 2, 3, and 5 Buffer (RAW): no review needed

Protection: Category A 

Stream#: 1.26L Class: II Flagging: B/W C- Type: MMS, HCM, HCV

Concerns: Blowdown, steep side-slopes, active erosion

Buffer (RMA): Class II for MMS greater of 120 feet, flood plain, riparian vegetation or soils, or riparian associated wetland 

fens. Class II for HCM and HCV greater of 100 feet or to the top of the side-slope break.

Alternatives: 2, 3, and 5		 Buffer (RAW): Will be identified by IDT during layout.

Protection: Category A 

Stream#: 1.26L.2R Class: III Flagging: O/W C- Type: HCD, HCM, MMS 

Unit

Number 14 Alternatives 2, 3, 5

Summary of Concerns, Responses, BMPs and Mitigation

 INVASIVE SPECIES:

No Concerns
Unit 14

Concerns: Blowdown and active erosion.

Buffer (RMA): Class III for HCD and HCM to the top of the side-slope break. Class III for MMS greater of 120 feet, flood 

plain, riparian vegetation or soils, or riparian associated wetland fens.

Alternatives 2, 3, and 5 Buffer (RAW): Will be identified by IDT during layout.

Protection: Category B (

Stream#: 1.27L Class: II, III, IV Flagging: B/W, O/W, G/W C- Type: PAB, HCDw,

Concerns: Debris deposits, steep side-slopes

Buffer (RMA): Class II for PAB greater of 100 feet, flood plain, riparian vegetation or soils, or riparian associated wetland 

fens. Class III for HCDw to the top of the side-slope break. Class IV for HCDw none.

Alternatives: 2, 3, and 5 Buffer (RAW): Will be identified by IDT during layout.

Protection: Category A, B, and C 

Stream#: 1.29L Class: II, III Flagging: B/W, O/W C- Type: MMS, HCM, HCV,HCD

Concerns: Blowdown, active erosion, steep side-slopes with mobile fine sediments

Buffer (RMA): Class II for MMS greater of 120 feet, flood plain, riparian vegetation or soils, or riparian associated wetland 

fens. Class II for HCM greater of 100 feet or to the top of the side-slope break. Class III for HCD and HCV to the top of the 

side-slope break. 

Alternatives: 2, 3, and 5	 Buffer (RAW): no review needed. 

Protection: Category A and B 

Stream#: 1.29L.1L Class: III, IV Flagging: O/W, IV C- Type: HCM, HCL

Concerns: Blowdown, active erosion, steep side-slopes

Buffer (RMA): Class III for HCM to the top of the side-slope break. Class IV for HCL none.

Alternatives: 2, 3, and 5	 Buffer (RAW): no review needed 

Protection: Category B and C 

Stream#: 1.29L.2L Class: III Flagging: O/W C- Type: HCL, HCD

Concerns: steep side-slopes

Buffer (RMA): Class III for HCL and HCD to the top of the side-slope break. 

Alternatives: 2, 3, and 5	 Buffer (RAW): no review needed

Protection: Category B 

All other streams in unit: Class: IV Flagging: G/W C- Type: HC or MM

Buffer (RMA): none Buffer (RAW): no review needed

Protection: Category C 

Temporary roads (both new and constructed over decommissioned road bed) for Unit 14: Alternatives 2, 3, and 5 - No known 

stream crossings. If any additional stream crossings are found, crossing structures and locations will be approved by USFS, 

in consultation with fisheries biologist or hydrologist, prior to construction (BMP 14.17). During construction of temporary 

roads implement BMPs 12.17, 13.10, 13.11, 13.16, 14.3, and 14.5.

 GEOLOGY/KARST:

No Concerns

 HERITAGE RESOURCES:

This unit was investigated per the third amended interagency Programmatic Agreement (PA) for historic properties. As 

specified by the PA, any potential adverse effect on historic properties (if any) was mitigated and portions of the Area of 

Potential Effect will be monitored by a qualified heritage specialist during and/or after actual ground disturbance.

 SCENERY:

The Scenic Integrity Objectives (SIO) of this unit are Low and Very Low, with the Low SIO covering about 39 acres. The Low 

SIO area is in Modified Landscape LUD and Middleground distance zone, while the Very Low is in Timber Production LUD. 

The Low SIO area is mostly from 2-1/4 to 2-1/2 miles from the Klawock-Control Lake highway, which is a Visual Priority 

Travel Route.

 RECREATION:

No Concerns.

 SOILS/WETLANDS:

Slopes are gentle to the north of road line that intersects the proposed unit, ranging from 5 to 30%. To the south of the road 

line, the slopes are steeper and average 50 to 60%. Forested wetlands are located sparsely in the northern portion of the 

unit. The unit was modified following soil reconnaissance to defer approximately 6 acres of unsuitable landslide prone soils 

and slopes greater than 72% next to the stream near the southern unit boundary. As modified, the soils and wetlands are 
Unit 14

suitable for minimum partial suspension cable yarding or shovel yarding. All logging systems should follow BMPs 12.5, 13.2 

and 13.9. Where shovel logging is used, the shovel operator should avoid the small non-forested areas of the unit to prevent 

rutting. Slopes over 25% gradient may not be suitable for shovel yarding under some soil moisture conditions. Use care 

when approving shovel yarding on slopes over 25% gradient. Avoid track slippage and rutting. 

A temporary road will impact less than 1/4 acre of emergent short sedge/forested wetland complex inside the unit and less 

than 1/4 acre outside the unit. These impacts are necessary due to the location of existing roads and for access to the 

eastern portion of the unit. Follow BMPs 12.5 and 14.9. Provide adequate cross drainage, remove drainage structures, and 

close road after harvest (BMP 14.9). .

 WILDLIFE:

Includes average snow deer winter range (entire unit), some of which is also deep snow marten habitat/deer winter range (all 

but south central portion). Legacy standard and guideline does not apply in this VCU.

Alternative 4: Unit dropped to maintain connectivity in Steelhead Drainage and other habitat values.
2030120

2030120

1.26L.2 R

1.29L.1L

1.27 L.1R

1.29L.1R

1.26L

Steelhead

1

1.29L.2L.1L

1.29L.2R

1.31L.2R

1.31L

1.26L.2R.1R

1.2 6L.1R

1.26L

1.29L.3R

1.27L

1.26L.2R

1.29L.2L

L

1.26L.2R.1L

L

1.30L

1.27L

1.29L

1.2R

1.31L

1

A1

1.29L

1990

1990

1987

1990

14

15

15

8

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 014 Alternative 2 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Partial Cut

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

595

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt2.mxd 14 July 2012

RR

SR
2030120

2030120

1.26L.2 R

1.29L.1L

1.27 L.1R

1.29L.1R

1.26L

Steelhead

1

1.29L.2L.1L

1.29L.2R

1.31L.2R

1.31L

1.26L.2R.1R

1.2 6L.1R

1.26L

1.29L.3R

1.27L

1.26L.2R

1.29L.2L

L

1.26L.2R.1L

L

1.30L

1.27L

1.29L

1.2R

1.31L

1

A1

1.29L

1990

1990

1987

1990

14

15

15

8

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 014 Alternative 3 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

595

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt3.mxd 14 July 2012

RR

SR
2030120

2030120

1.26L.2 R

1.29L.1L

1.27 L.1R

1.29L.1R

1.26L

Steelhead

1

1.29L.2L.1L

1.29L.2R

1.31L.2R

1.31L

1.26L.2R.1R

1.2 6L.1R

1.26L

1.29L.3R

1.27L

1.26L.2R

1.29L.2L

L

1.26L.2R.1L

L

1.30L

1.27L

1.29L

1.2R

1.31L

1

A1

1.29L

1990

1990

1987

1990

14

15

15

8

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 014 Alternative 5 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Sytematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

595

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt5.mxd 14 July 2012

RR

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Unit 15

Total Unit

Acres:

2, 3 - 82.7

4 - 33.7

5 - 49.0

Prescription: Clearcut

VCU

Number:

595 Harvest

System:

Cable, Shovel

Net Harvest

Volume

(MBF):

2 - 2,170

3 - 2,170

4 - 885

5 - 1,285

LUD:

Modified Landscape, 

Timber Production

 SILVICULTURE:

Existing Condition: Unit 15 is predominantly a western hemlock stand that transitions to western hemlock/Alaska yellowcedar in the upper elevations. Generally old growth structure is present with heavy past wind damage in lower elevations and 

along the northern boundary creating areas with two age structure. High windthrow risk, heavy defect, and high incidence of 

mistletoe defines the stand. Part of this unit was deferred to create a break between Unit 14 and parts of Unit 15 combine to 

meet the opening size requirements. All past harvest areas adjacent to or near this unit are adequately restocked with trees 

at least 5 feet tall meeting the NFMA requirements for no longer being considered an opening. 

Silvicultural Objective/Desired Condition: The desired condition for this stand is a highly productive, healthy, windfirm stand 

grown for timber management that retains residual trees as needed to meet standards and guides or other objectives. 

Silvicultural Prescription: Even-age Management - Clearcut

This stand is being recommended for harvest at this time because it is not expected to obtain the desired condition given the 

current growth trajectory. Trees are over-mature with heavy stem decay and defect resulting in a situation where stand 

growth is being offset or exceeded by decay. Even-aged clear cutting is being prescribed to preclude or minimize the risk of 

windthrow post harvest, promote natural regeneration by opening up the canopy, and minimize defect and disease in the 

future stand to the maximum extent possible.

 TIMBER/LOGGING:

This unit is planned for a combination of shovel and cable yarding. Cable settings are planned for uphill yarding to landings 

on the proposed extension of NFS road 2030120 and existing NFS road 2030120. Shovel settings are planned for yarding to 

the proposed NFS road 2030120 and the existing NFS road 2030120.

 ENGINEERING/ROADS:

Unit is accessed by a proposed extension of 1,800-ft. NFS road 2030120, as displayed on the unit card. See corresponding 

road card for detailed information on proposed NFS road.

 BOTANY:

No Concerns

 FISHERIES:

Streams are tributaries to Steelhead Creek. 

Stream#: 1 (Steelhead) Class: II Flagging: B/W C- Type: MCM, MMM

Concerns: active erosion

Buffer (RMA): Class II for MMM greater of 120 feet, flood plain, riparian vegetation or soils, or riparian associated wetland 

fens. Class II for MCM greater of 100 feet or to the top of the side-slope break.

Alternatives: 2, 3, 4, Buffer (RAW): Will be identified during layout.

Alternatives: 5 Buffer (RAW): no review needed

Protection: Category A 

Stream#: 1.29L Class: II, III Flagging: B/W, O/W C- Type: MMS, HCM, HCV, HCD 

Concerns: blowdown, active erosion, steep side-slopes with mobile fine sediments

Buffer (RMA): Class II for MMS greater of 120 feet, flood plain, riparian vegetation or soils, or riparian associated wetland 

fens. Class II for HCM greater of 100 feet or to the top of the side-slope break. Class III for HCV and HCD to the top of the 

side-slope break. 

Alternatives: 2, 3, 4, and 5 Buffer (RAW): Will be identified by IDT during layout.

Unit

Number 15 Alternatives 2, 3, 4, 5

Summary of Concerns, Responses, BMPs and Mitigation

 INVASIVE SPECIES:

No Concerns
Unit 15

Protection: Category A and B 

Stream#: 1.29L.1R Class: II, III Flagging: B/W, O/W C- Type: HCM , HCD

Concerns: blowdown

Buffer (RMA): Class II for HCM greater of 100 feet or the top of the side-slope break. Class III for HCD to the top of the sideslope break.

Alternatives: 2, 3 and 5		 Buffer (RAW): Will be identified by IDT during layout.

Alternatives: 4 Buffer (RAW): no review needed

Protection: Category A and B 

Stream#: 1.31L	 Class: II, III, IV Flagging: B/W, O/W, G/W	 C- Type: HCO, AFH , HCM, HCO

Concerns: Blowdown, active erosion

Buffer (RMA): Class II for HCO greater of 100 feet or to the top of the side-slope break. Class II for AFH greater of 140 feet 

or active portion of the alluvial fan. Class III for HCM to the top of the top of the side-slope break. Class IV for HCO none.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): Will be identified by IDT during layout.

Protection: Category A, B, and C 

Stream#: 1.32L Class: II, IV Flagging: B/W, G/W C- Type: MMO, HCO

Concerns: none

Buffer (RMA): Class II for MMO greater of 120 feet, flood plain, riparian vegetation or soils, or riparian associated wetland 

fens. Class II for HCO greater of 100 feet or to the top of the side-slope break. Class IV for HCO none.

Alternatives: 2, 3 and 4 Buffer (RAW): Will be identified by IDT during layout.

Alternatives: 5 Buffer (RAW): no review needed

Protection: Category A and C 

Stream#: 1.33L Class: II, III Flagging: B/W, O/W C- Type: HCM, HCD, HCL

Concerns: Abundant debris jams and sediment wedges in bedrock channel

Buffer (RMA): Class II for HCM and HCD greater of 100 feet or to the top of the side-slope break. Class III for HCL to the top 

of the side-slope break. 

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed.

Protection: Category A and B 

All other streams in unit: Class: IV Flagging: G/W C- Type: HC or MM

Buffer (RMA): none Buffer (RAW): no review needed.

Protection: Category C

 GEOLOGY/KARST:

No Concerns

 HERITAGE RESOURCES:

This unit was investigated per the third amended interagency Programmatic Agreement (PA) for historic properties. As 

specified by the PA, any potential adverse effect on historic properties (if any) was mitigated and portions of the Area of 

Potential Effect will be monitored by a qualified heritage specialist during and/or after actual ground disturbance.

 SCENERY:

The Scenic Integrity Objectives (SIO) of this unit are Low and Very Low, with the Low SIO covering about 57 acres in 

Alternatives 2 and 3, 8 acres in Alternative 4, and 49 acres in Alternative 5. The Low SIO area is in Modified Landscape LUD 

and Middleground distance zone, while the Very Low is in Timber Production LUD. The Low SIO area is mostly from 2-1/2 to 

2-3/4 miles from the Klawock-Control Lake highway, which is a Visual Priority Travel Route.

 RECREATION:

No Concern.

 SOILS/WETLANDS:

Alternatives 2, 3, 4, and 5: Slopes range from 10 to 92%. About 1 acre of slopes greater than 72% are located in the centereast of the unit. Forested wetlands are dominant on slopes less than 45%. The soils and wetlands are suitable for a minimum 

of partial suspension cable and shovel yarding. All logging systems should follow BMPs 12.5, 13.2 and 13.9. Where shovel 

yarding is used, the shovel operator should avoid the small non-forested areas of the unit to prevent rutting. Slopes over 

25% gradient may not be suitable for shovel yarding under some soil moisture conditions. Use care when approving shovel 

yarding on slopes over 25% gradient. Avoid track slippage and rutting. 

Alternative 4 generally excludes the steeper portions of the unit and Alternative 5 generally includes the steeper portions and 

excludes the gentler portions.
Unit 15

A temporary road will impact approximately 1 1/4 acre of forested wetland inside the unit and approximately 1/4 acre outside 

the unit. These impacts are necessary due to the location of existing roads and for accessing the eastern portion of the unit. 

Follow BMPs 12.5 and 14.9 and provide adequate cross drainage, remove drainage structures, and close road after harvest 

(BMP 14.9). .

 WILDLIFE:

Includes average snow deer winter range (entire unit), some of which is also deep snow marten habitat/deer winter range (all 

but east central portion). Legacy standard and guideline does not apply in this VCU.

Alternative 4: East side of unit dropped to maintain connectivity in Steelhead Drainage and other habitat values. Deer winter 

range in western portion of unit that was not dropped.
2030000

2030120

2030120

2030120

1.29L 2. L.1L

1.29L.2R

1.31L.1R

1.31L.2R

1.31L

1.29L.3R

1.29L.1L

1.32L

1.29L

1.33L

1.29L.2L

1.30L

1.29L

1

1

1.29L

1.31L

1.29L.1R

Steelhead

1990

1990

1991

14

15

15

16

17

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 015 Alternative 2 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Partial Cut

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

595

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt2.mxd 14 July 2012

RR

SR
2030000

2030120

2030120

2030120

1.29L 2. L.1L

1.29L.2R

1.31L.1R

1.31L.2R

1.31L

1.29L.3R

1.29L.1L

1.32L

1.29L

1.33L

1.29L.2L

1.30L

1.29L

1

1

1.29L

1.31L

1.29L.1R

Steelhead

1990

1990

1991

14

15

15

16

17

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 015 Alternative 3 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

595

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt3.mxd 14 July 2012

RR

SR
2030000

2030120

2030120

1.29L.2L.1L

1.29L.2R

1.31L.1R

1.31L.2R

1.31L

1.29L.3R

1.29L.1L

1.32L

1.29L

1.33L

1.29L.2L

1.30L

1.29L

1

1

1.29L

1.31L

1.29L.1R

Steelhead

1990

1990

1991

15

15

16

17

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 015 Alternative 4 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

595

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt4.mxd 20 March 2012

RR

SR
2030000

2030120

2030120

2030120

1.29L 2. L.1L

1.29L.2R

1.31L.1R

1.31L.2R

1.31L

1.29L.3R

1.29L.1L

1.32L

1.29L

1.33L

1.29L.2L

1.30L

1.29L

1

1

1.29L

1.31L

1.29L.1R

Steelhead

1990

1990

1991

14

15

15

16

17

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 015 Alternative 5 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Sytematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

595

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt5.mxd 14 July 2012

RR

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Unit 16

Total Unit

Acres:

20.1 Prescription: Clearcut

VCU

Number:

595 Harvest

System:

Cable, Shovel

Net Harvest

Volume

(MBF):

512

LUD:

Modified Landscape

 SILVICULTURE:

Existing Condition: Unit 16 has old growth stand structure. In the western hemlock stem decay is moderate and mistletoe 

infection is light. Alaska-cedar decline is occurring in the stand. Average defect is high for all species. Windthrow risk is 

moderate. All past harvest areas adjacent to or near this unit are adequately restocked with trees at least 5 feet tall meeting 

the NFMA requirements for no longer being considered an opening.

Silvicultural Objective/Desired Condition: The desired condition for this stand is a highly productive, healthy, windfirm stand 

grown for timber management that retains residual trees as needed to meet standards and guides or other objectives. 

Silvicultural Prescription: Even-age Management - Clearcut

This stand is being recommended for harvest at this time because it is not expected to obtain the desired condition given the 

current growth trajectory. This stand is over-mature with moderate stem decay and overall high defect resulting in a situation 

where stand growth is being offset or exceeded by decay. Even-aged clear cutting is being prescribed to preclude or 

minimize the risk of windthrow post harvest, promote natural regeneration by opening up the canopy, and minimize defect 

and disease in the future stand to the maximum extent possible.

 TIMBER/LOGGING:

The north setting in this unit is planned for shovel yarding to the northern proposed temporary road. The south setting is 

planned for uphill cable yarding to landings on the southern proposed temporary road.

 ENGINEERING/ROADS:

Unit is accessed by two proposed temporary roads, totaling 700 feet, as displayed on the unit card.

 BOTANY:

No Concerns

 FISHERIES:

Streams are tributaries to Steelhead Creek. 

Stream#: 1.29L Class: III, IV Flagging: O/W, G/W C- Type: HCM, MMO

Concerns: blowdown

Buffer (RMA): Class III for HCM to the top of the side-slope break. Class IV for MMO none. 

Alternatives: 2, 3, 4, and 5 Buffer (RAW): Will be identified by IDT during layout.

Protection: Category B and C 

Stream#: 1.29L.3L Class: III, IV Flagging: O/W, G/W C- Type: HCM, HCL

Concerns: none

Buffer (RMA): Class III for HCM to the top of the side-slope break. Class IV for HCL none.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): Will be identified by IDT during layout. 

Protection: Category B and C 

Stream#: 1.29L.4L Class: III, IV Flagging: O/W, G/W C- Type: HCM, HCL

Concerns: none

Buffer (RMA): Class III for HCM to the top of the side-slope break. Class IV for HCL none.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): Will be identified by IDT during layout. 

Protection: Category B and C 

All other streams in unit: Class: IV Flagging: G/W C- Type: HC or MM

Buffer (RMA): none Buffer (RAW): no review needed.

Unit

Number 16 Alternatives 2, 3, 4, 5

Summary of Concerns, Responses, BMPs and Mitigation

 INVASIVE SPECIES:

No Concerns
Unit 16

Protection: Category C 

Temporary roads for Unit 16: All Alternatives -- One Class III stream crossing. The temporary roads have not been field 

verified and will be surveyed before implementation. Crossings structures and locations will be approved by USFS, in 

consultation with fisheries biologist or hydrologist, prior to construction (BMP 14.17). During construction of temporary roads, 

implement BMPs 12.17, 13.10, 13.11, 13.16, 14.3, and 14.5.

 GEOLOGY/KARST:

No Concerns

 HERITAGE RESOURCES:

This unit was investigated per the third amended interagency Programmatic Agreement (PA) for historic properties. As 

specified by the PA, any potential adverse effect on historic properties (if any) was mitigated and portions of the Area of 

Potential Effect will be monitored by a qualified heritage specialist during and/or after actual ground disturbance.

 SCENERY:

The Scenic Integrity Objectives (SIO) of this unit is Low. The unit is in Modified Landscape LUD and Middleground distance 

zone. The lies about 3 miles from the Klawock-Control Lake highway, which is a Visual Priority Travel Route.

 RECREATION:

Harvest activities in this unit would be visible to recreationists using the existing road. Recreationists may also encounter 

logging traffic on the road. Harvest in this unit would be consistent with the applicable LUD (Modified Landscape) and would 

not change existing ROS settings. Harvest has occurred along the road system in the recent past (less than 30 years).

 SOILS/WETLANDS:

Slopes are mostly gentle throughout the unit. Small areas of approximately 55% slopes occur along knobs near the 2030100 

road in the southern finger of the unit. These pitches are short (less than 100 feet) lengths. Forested wetlands are dominant 

on the gentle slopes in the northern section of the unit. The soils and wetlands are suitable for a minimum of partial 

suspension cable yarding or shovel yarding. All logging systems should follow BMPs 12.5, 13.2, and 13.9). Where shovel 

yarding is used, the shovel operator should avoid the small non-forested areas of the unit to prevent rutting. Slopes over 25% 

gradient may not be suitable for shovel yarding under some soil moisture conditions. Use care when approving shovel 

yarding on slopes over 25% gradient. Avoid track slippage and rutting.

No mapped wetlands are crossed by the temporary roads. If wetlands are crossed because avoidance is not feasible, follow 

BMPs 12.5 and 14.9. Provide adequate cross drainage, remove drainage structures, and close road after harvest (BMP 14.9).

 WILDLIFE:

Unit includes average snow deer winter range (entire unit). Legacy standard and guideline does not apply in this VCU.
2030120

2030100

2030120

1.29L.3L.3R

1.29L.3L

1.29L.3L.2R

1.29L.2L.1L

1.29L.2R

1.31L

1.29L.3R

1.29L

1.29L.3L

1.26L.2R

1.29L.2L

1.29L.4L

1.29L

1.29L

1.29L.1R

1990

1990

1999

1999

1990

1990

14

15

16

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 016 Alternative 2 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Partial Cut

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

595

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt2.mxd 14 July 2012

RR

SR
2030120

2030100

2030120

1.29L.3L.3R

1.29L.3L

1.29L.3L.2R

1.29L.2L.1L

1.29L.2R

1.31L

1.29L.3R

1.29L

1.29L.3L

1.26L.2R

1.29L.2L

1.29L.4L

1.29L

1.29L

1.29L.1R

1990

1990

1999

1999

1990

1990

14

15

16

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 016 Alternative 3 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

595

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt3.mxd 14 July 2012

RR

SR
2030120

2030100

1.29L.3L.3R

1.29L.3L

1.29L.3L.2R

1.29L.2L.1L

1.29L.2R

1.31L

1.29L.3R

1.29L

1.29L.3L

1.26L.2R

1.29L.2L

1.29L.4L

1.29L

1.29L

1.29L.1R

1990

1990

1999

1999

1990

1990

15

16

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 016 Alternative 4 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

595

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt4.mxd 20 March 2012

RR

SR
2030120

2030100

2030120

1.29L.3L.3R

1.29L.3L

1.29L.3L.2R

1.29L.2L.1L

1.29L.2R

1.31L

1.29L.3R

1.29L

1.29L.3L

1.26L.2R

1.29L.2L

1.29L.4L

1.29L

1.29L

1.29L.1R

1990

1990

1999

1999

1990

1990

14

15

16

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 016 Alternative 5 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Sytematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

595

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt5.mxd 14 July 2012

RR

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Unit 17

Total Unit

Acres:

31.4 Prescription: Clearcut

VCU

Number:

595 Harvest

System:

Cable, Shovel

Net Harvest

Volume

(MBF):

841

LUD:

Timber Production

 SILVICULTURE:

Existing Condition: Unit 17 has old-growth stand structure. The unit has significant blowdown along the adjacent clearcut to 

the south and along the roadway to the southwest. Western hemlock mistletoe is moderate to low. Stem decays are 

moderate occurrence. All past harvest areas adjacent to or near this unit are adequately restocked with trees at least 5 feet 

tall meeting the NFMA requirements for no longer being considered an opening.

Silvicultural Objective/Desired Condition: The desired condition for this stand is a highly productive, healthy, windfirm stand 

grown for timber management that retains residual trees as needed to meet standards and guides or other objectives. 

Silvicultural Prescription: Even-age Management - Clearcut

This stand is being recommended for harvest at this time because it is not expected to obtain the desired condition given the 

current growth trajectory. This stand is mature with moderate stem decay and defect resulting in a situation where stand 

growth is static or being somewhat exceeded by decay. Even-aged clear cutting is being prescribed to preclude or minimize 

the risk of windthrow post harvest, promote natural regeneration by opening up the canopy, and minimize defect and disease 

in the future stand to the maximum extent possible.

 TIMBER/LOGGING:

This unit is planned for a combination of shovel and cable yarding. Cable settings are planned for uphill and downhill yarding 

to landings on the existing NFS road 2030120. Shovel settings are planned for yarding to the existing NFS road 2030120.

 ENGINEERING/ROADS:

No proposed road construction.

 BOTANY:

No Concerns

 FISHERIES:

Streams are tributaries to Steelhead Creek. 

Stream#: 1 (Steelhead Creek) Class: II Flagging: B/W C-Type: FPM, MMM

Concerns: none

Buffer (RMA): Class II - greater of 130 feet (FPM) and 120 feet (MMM) , flood plain, riparian vegetation or soils, or riparian 

associated wetland fens. 

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed

Protection: Category A 

Stream#: 1.1L Class: II, III, IV Flagging: B/W, O/W, G/W C-Type: HCM, HCO

Concerns: blowdown

Buffer (RMA): Class II for HCM greater of 100 feet or to the top of the side-slope break. Class III for HCM to the top of the 

side-slope break. Class IV for HCO none. 

Alternatives: 2, 3, 4, and 5 Buffer (RAW): Will be identified by IDT during layout. 

Protection: Category A, B, and C 

Stream#: 1.2L Class: II, III, IV Flagging: B/W, O/W, G/W C-Type: MMS, HCD, HCO

Concerns: blowdown

Buffer (RMA): Class II for MMS greater of 120 feet, flood plain, riparian vegetation or soils, or riparian associated wetland 

fens. Class III for HCD to the top of the side-slope break. Class IV for HCO none.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): Will be identified by IDT during layout. 

Unit

Number 17 Alternatives 2, 3, 4, 5

Summary of Concerns, Responses, BMPs and Mitigation

 INVASIVE SPECIES:

No Concerns
Unit 17

Protection: Category A, B, and C 

Stream#: 1.2L.1LA Class: II, III, IV Flagging: B/W, O/W, G/W C- Type: HCL, HCM

Concerns: blowdown

Buffer (RMA): Class II for HCM greater of 100 feet or to the top of the side-slope break. Class III for HCL to the top of the 

side-slope break. Class IV for HCM none. 

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed

Protection: Category A, B and C 

Stream#: 1.2L.1LA.1L Class: III, IV Flagging: O/W, G/W C- Type: HCL

Concerns: blowdown

Buffer (RMA): Class III for HCL to the top of the side-slope break. Class IV for HCL none.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed

Protection: Category B and C 

All other streams in unit: Class: IV Flagging: G/W C- Type: HC or MM

Buffer (RMA): none Buffer (RAW): no review needed

Protection: Category C

 GEOLOGY/KARST:

No Concerns

 HERITAGE RESOURCES:

This unit was investigated per the third amended interagency Programmatic Agreement (PA) for historic properties. As 

specified by the PA, any potential adverse effect on historic properties (if any) was mitigated and portions of the Area of 

Potential Effect will be monitored by a qualified heritage specialist during and/or after actual ground disturbance.

 SCENERY:

The Scenic Integrity Objective for this unit is Very Low. The unit is Not Seen from any Visual Priority Travel Route or Use 

Area and is in Timber Production LUD. There are no scenery resource concerns.

 RECREATION:

Harvest activities in this unit would be visible to recreationists using the existing road. Recreationists may also encounter 

logging traffic on the road. Harvest in this unit would be consistent with the applicable LUD (Timber Production) and would 

not change existing ROS settings. Harvest has occurred along the road system in the recent past (less than 30 years).

 SOILS/WETLANDS:

Slopes range from 35 to 75%. There is a small cliff area in the that has slopes greater than 72%. This area is about 1⁄4 acre 

and has a slope length of 200 feet with exposed rock. There are many benches throughout the unit. Forested wetlands are 

located near both existing roadlines where the slopes are less than 35%. The soils and wetlands are suitable for partial 

suspension cable yarding or shovel yarding. All logging systems should follow BMPs 12.5, 13.2 and 13.9. Where shovel 

yarding is used, the shovel operator should avoid the small non-forested areas of the unit to prevent rutting. Slopes over 

25% gradient may not be suitable for shovel yarding under some soil moisture conditions. Use care when approving shovel 

yarding on slopes over 25% gradient. Avoid track slippage and rutting.

There is no proposed road construction.

 WILDLIFE:

Unit includes average snow deer winter range (entire unit), some of which is also deep snow marten habitat/deer winter 

range (western half of unit). Legacy standard and guideline does not apply in this VCU.
2030120

2030207

2030125

2030100

2030121

2030120

1

1.2L.1LA

Steelhead

1.1R

Steelhead

1.2L

1

1.2L

1.2L.1L

1.2L.1LA.1L

1.2L

1.2L.3L

1 2. L.2L

1.1L

1.32L

1.2L.4L

1.33L

1.1L

A8

1.2L.1LA

2005

1995

1990

1990

1990

2005

1995

17

18

20

15

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 017 Alternative 2 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Partial Cut

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

595

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt2.mxd 14 July 2012

RR

SR
2030120

2030207

2030125

2030100

2030121

2030120

1

1.2L.1LA

Steelhead

1.1R

Steelhead

1.2L

1

1.2L

1.2L.1L

1.2L.1LA.1L

1.2L

1.2L.3L

1 2. L.2L

1.1L

1.32L

1.2L.4L

1.33L

1.1L

A8

1.2L.1LA

2005

1995

1990

1990

1990

2005

1995

17

18

20

15

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 017 Alternative 3 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

595

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt3.mxd 14 July 2012

RR

SR
2030120

2030100

2030121

2030207

2030125

1

1.2L.1LA

Steelhead

1.1R

Steelhead

1.2L

1

1.2L

1.2L.1L

1.2L.1LA.1L

1.2L

1.2L.3L

1 2. L.2L

1.1L

1.32L

1.2L.4L

1.33L

1.1L

A8

1.2L.1LA

2005

1995

1990

1990

1995

2005

1990

17

18

15

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 017 Alternative 4 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

595

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt4.mxd 20 March 2012

RR

SR
2030120

2030207

2030125

2030100

2030121

2030120 1.2L.1LA

Steelhead

1.1R

Steelhead

1.2L

1

1.2L

1.2L.1L

1.2L.1LA.1L

1.2L

1.2L.3L

1 2. L.2L

1.1L

1.32L

1.2L.4L

1.33L

1.1L

A8

1.2L.1LA

1

2005

1995

1990

1990

1990

2005

1995

17

18

15

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 017 Alternative 5 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Sytematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

595

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt5.mxd 14 July 2012

RR

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Unit 18

Total Unit

Acres:

20.9 Prescription: 2, 3, 5 - Clearcut

4 - 50% Removal

VCU

Number:

595 Harvest

System:

Helicopter

Net Harvest

Volume

(MBF):

2, 3, 5 - 468

4 - 234 LUD:

Timber Production

 SILVICULTURE:

Existing Condition: Unit 18 is a mixed species stand with old-growth structure. The Alaska-cedar is experiencing decline with 

estimated 50% mortality. The northern portions and western most portions of the unit are predominantly western hemlock of 

low quality and high defect. Mistletoe is moderate occurrence with most hemlock infected to some degree. Windthrow risk is 

high across the unit. The adjacent 2005 even-age harvest to the south does not currently meet the requirements of NFMA to 

no longer be considered an opening. This requires that the combined acreage of Unit 18 and this past harvest not exceed 

100 acres. Unit 18 as planned meets this criteria. 

Silvicultural Objective/Desired Condition: The desired condition for this stand is a highly productive, healthy, windfirm stand 

grown for timber management that retains residual trees as needed to meet standards and guides or other objectives. 

Silvicultural Prescription: Even-age Management - Clearcut (Alternatives 2, 3, and 5)

This stand is being recommended for harvest at this time because it is not expected to obtain the desired condition given the 

current growth trajectory. This stand is over-mature with high stem decay and defect resulting in a situation where stand 

growth is being offset or exceeded by decay. Even-aged clear cutting is being prescribed to preclude or minimize the risk of 

windthrow post harvest, promote natural regeneration by opening up the canopy, and minimize defect and disease in the 

future stand to the maximum extent possible.

Silvicultural Prescription: Uneven-age Management Single Tree Selection (Alternative 4)

Maintain at least 50 percent of the setting pretreatment basal area, based on standing live tree total for the unit, uncut. 

Individual trees selected for harvest may occur in small groups but will generally be evenly distributed across the stand. Any 

small groups will usually be less than one acre but may occasionally go up to two acres in size where needed to address 

insect and disease issues or capitalize on existing advanced regeneration of desirable tree species. Trees selected for 

harvest will generally be well distributed and no large openings will occur as a result of the harvest. Review the marking 

guides and silvicultural prescription for more detailed information and direction for how to implement this prescription. The 

uneven-aged single tree selection regeneration method is being prescribed for this unit in Alternative 4 specifically to 

maintain intact diverse structure for wildlife needed at this time and place in the landscape to meet the objectives of this 

alternative. This system is not optimum for promoting timber production but is being prescribed in alternative 4 primarily to 

mitigate the overall effects of the project on wildlife.

 TIMBER/LOGGING:

This unit is planned for helicopter yarding to landings on existing NFS roads 2030000 and 2030120.

 ENGINEERING/ROADS:

No proposed road construction.

 BOTANY:

No Concerns

 FISHERIES:

Unit

Number 18 Alternatives 2, 3, 4, 5

Summary of Concerns, Responses, BMPs and Mitigation

 INVASIVE SPECIES:

No Concerns
Unit 18

Streams are tributaries to Steelhead Creek. 

Stream#: 1.1R Class: II, III Flagging: B/W, O/W C- Type: MCS, HCM, HCD

Concerns: Blowdown, active erosion, and steep side slopes with mobile fine sediment

Buffer (RMA): Class II for MCS and HCM greater of 100 feet or the top of the side-slope break. Class III for HCD and MCS 

to the top of the side-slope break.

Alternatives: 2, 3 and 5 Buffer (RAW): Will be identified by IDT during layout.

Alternatives: 4 Buffer (RAW): no review needed

Protection: Category A and B 

Stream#: 1.1R.1R Class: II Flagging: B/W C- Type: HCL

Concerns: none

Buffer (RMA): Class II for HCL greater of 100 feet or to the top of the side-slope break. 

Alternatives: 2, 3, 4 and 5 Buffer (RAW): no review needed

Protection: Category A 

Stream#: 1.1R.1L Class: II, III Flagging: B/W, O/W C- Type: HCL, HCD

Concerns: blowdown, active erosion, large alluvial deposits

Buffer (RMA): Class II for HCL and HCD greater of 100 feet or the top of the side-slope break. Class III for HCD to the top of 

the side-slope break.

Alternatives: 2, 3 and 5 Buffer (RAW): Will be identified by IDT during layout.

Alternatvies: 4 Buffer (RAW): no review needed

Protection: Category A and B 

Stream#: 1.1R.1L.1L Class: II, III, IV Flagging: B/W, O/W, G/W C- Type: HCL, HCD, HCM, HCO 

Concerns: blowdown

Buffer (RMA): Class II for HCL and HCD greater of 100 feet or to the top of the side-slope break. Class III for HCD and HCM 

to the top of the side-slope break. Class IV for HCO none

Alternatives: 2, 3, 4 and 5 Buffer (RAW): no review needed

Protection: Category A, B, and C 

Stream#: 1.1R.1L.1L.1R Class: III Flagging: O/W C- Type: HCL

Concerns: none

Buffer (RMA): Class III for HCL to the top of the side-slope break. 

Alternatives: 2, 3, 4 and 5 Buffer (RAW): no review needed

Protection: Category B 

All other streams in unit: Class: IV Flagging: G/W C- Type: HC or MM

Buffer (RMA): none Buffer (RAW): no review needed.

Protection: Category C

 GEOLOGY/KARST:

No Concerns

 HERITAGE RESOURCES:

This unit was investigated per the third amended interagency Programmatic Agreement (PA) for historic properties. As 

specified by the PA, any potential adverse effect on historic properties (if any) was mitigated and portions of the Area of 

Potential Effect will be monitored by a qualified heritage specialist during and/or after actual ground disturbance.

 SCENERY:

The Scenic Integrity Objective for this unit is Very Low. The unit is Not Seen from any Visual Priority Travel Route or Use 

Area and is in Timber Production LUD. There are no scenery resource concerns.

 RECREATION:

No concerns; however, note that this unit is adjacent to the Karta inventoried roadless area to the south.

 SOILS/WETLANDS:

Slopes range from nearly level to 70%. Slopes greater than 50% occur only in the western polygons. Slopes average 40% in 

the easternmost polygon. Forested wetlands are dominant on slopes less than 40% and are intermixed with upland 

vegetation. There is an emergent sedge muskeg in the north end of the eastern polygon that is approximately 1/8 of an acre 

in size. A minimum of partial suspension will meet soil and wetland resource concerns (BMPs 12.5, 13.5, and 13.9).

 WILDLIFE:
Unit 18

Includes average snow deer winter range (entire unit), some of which is also deep snow marten habitat/deer winter range 

(western half of unit). Wolf sign documented in unit. Legacy standard and guideline does not apply in this VCU.

Alternative 4: Prescription is 50 percent basal area removal to maintain connectivity in Steelhead Drainage and other habitat 

values.
2030206

2030000

2030120

2030207

2030120

1.2L.1LA

1

1

Steelhead

1.1R

Steelh e

1.2L

1.1R .1L

1.1R.1R

1.2L.1LA.1L

1.1R.1L 1. L

1.1R.1L.1L

1.1R

1.2L

1.1R.1L.1L.1R

1.1R.1L

1.1L

A8

2005

1995

1990

1991

2005

2005

2005

18

17

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 018 Alternative 2 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Partial Cut

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

595

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RR

SR
2030206

2030000

2030120

2030207

2030120

1.2L.1LA

1

1

Steelhead

1.1R

Steelh e

1.2L

1.1R .1L

1.1R.1R

1.2L.1LA.1L

1.1R.1L 1. L

1.1R.1L.1L

1.1R

1.2L

1.1R.1L.1L.1R

1.1R.1L

1.1L

A8

2005

1995

1990

1991

2005

2005

2005

18

17

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 018 Alternative 3 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

595

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt3.mxd 14 July 2012

RR

SR
2030206

2030000

2030120

2030207

2030120

1.2L.1LA

1

1

Steelhead

1.1R

Steelh e

1.2L

1.1R .1L

1.1R.1R

1.2L.1LA.1L

1.1R.1L 1. L

1.1R.1L.1L

1.1R

1.2L

1.1R.1L.1L.1R

1.1R.1L

1.1L

A8

2005

1995

1990

1991

2005

2005

2005

18

17

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 018 Alternative 4 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

595

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt4.mxd 20 March 2012

RR

SR
2030206

2030000

2030120

2030207

2030120

1.2L.1LA

1

1

Steelhead

1.1R

Steelh e

1.2L

1.1R .1L

1.1R.1R

1.2L.1LA.1L

1.1R.1L 1. L

1.1R.1L.1L

1.1R

1.2L

1.1R.1L.1L.1R

1.1R.1L

1.1L

A8

2005

1995

1990

1991

2005

2005

2005

18

17

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 018 Alternative 5 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Sytematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

595

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt5.mxd 14 July 2012

RR

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Unit 19

Total Unit

Acres:

22.9 Prescription: Clearcut

VCU

Number:

595 Harvest

System:

Cable

Net Harvest

Volume

(MBF):

553

LUD:

Timber Production

 SILVICULTURE:

Existing Condition: Unit 19 is an over mature, mixed species stand of old-growth timber. In the hemlock, mistletoe is light and 

scattered throughout the unit, while stem rot is moderate and patchy. Defect is moderate to high for all species, except for the 

Sitka spruce, which was light. Alaska-cedar decline is occurring in the stand. Windthrow risk is moderate. The adjacent 2005 

even-age harvest to the west does not currently meet the requirements of NFMA to no longer be considered an opening. This 

requires that the combined acreage of unit 19 and this past harvest not exceed 100 acres. Unit 19 as planned meets this 

criteria. 

Silvicultural Objective/Desired Condition: The desired condition for this stand is a highly productive, healthy, windfirm stand 

grown for timber management that retains residual trees as needed to meet standards and guides or other objectives. 

Silvicultural Prescription: Even-age Management - Clearcut

This stand is being recommended for harvest at this time because it is not expected to obtain the desired condition given the 

current growth trajectory. This stand is over-mature with moderate to high stem decay and defect resulting in a situation 

where stand growth is being offset or exceeded by decay. Even-aged clear cutting is being prescribed to preclude or 

minimize the risk of windthrow post harvest, promote natural regeneration by opening up the canopy, and minimize defect 

and disease in the future stand to the maximum extent possible.

 TIMBER/LOGGING:

This unit is planned for uphill and downhill yarding to landings on the proposed temporary road.

 ENGINEERING/ROADS:

Unit is accessed by a proposed temporary road, totaling 900 feet, as displayed on the unit card.

 BOTANY:

No Concerns

 FISHERIES:

Stream#: 1.10L Class: III, IV Flagging: O/W, G/W C- Type: HCL, HCD 

Concerns: blowdow, steep side-slopes and action erosion

Buffer (RMA): Class III for HCL and HCD to the side-slope break. Class IV for HCD none.

Alternatives: 2, 3 Buffer (RAW): Will be identified by IDT during layout.

Protection: Category B and C.

Stream#: 1.10L.3R Class: III, IV Flagging: O/W, G/W C- Type: HCM, HCO

Concerns: none

Buffer (RMA): Class III for HCM to the side-slope break. Class IV for HCO none.

Alternatives: 2, 3 Buffer (RAW): Will be identified by IDT during layout.

Protection: Category B and C.

Stream#: 1.12A Class: IIV Flagging: O/W, G/W C- Type: HCL, HCO

Concerns: none

Buffer (RMA): Class IV for HCL to the top of the side-slope break. Class IV for HCO none.

Alternatives: 2, 3 Buffer (RAW): Will be identified by IDT during layout.

Protection: Category B and C. 

All other streams in unit: Class: IV Flagging: G/W C- Type: HC or MM

Buffer (RMA): none

Alternatives: 2, 3 Buffer (RAW): no review needed

Unit

Number 19 Alternatives 2, 3

Summary of Concerns, Responses, BMPs and Mitigation

 INVASIVE SPECIES:

No Concerns
Unit 19

Protection: Category C 

Temporary roads for Unit 19: Alternatives 2 and 3 -- Two Class III stream crossings. If any additional stream crossings are 

found, crossings structures and locations will be approved by USFS, in consultation with fisheries biologist or hydrologist, 

prior to construction (BMP 14.17). During construction of temporary roads implement BMPs 12.17, 13.10, 13.11, 13.16, 14.3, 

and 14.5.

 GEOLOGY/KARST:

No Concerns

 HERITAGE RESOURCES:

This unit was investigated per the third amended interagency Programmatic Agreement (PA) for historic properties. As 

specified by the PA, any potential adverse effect on historic properties (if any) was mitigated and portions of the Area of 

Potential Effect will be monitored by a qualified heritage specialist during and/or after actual ground disturbance.

 SCENERY:

The Scenic Integrity Objective for this unit is Very Low. The unit is Not Seen from any Visual Priority Travel Route or Use 

Area and is in Timber Production LUD. There are no scenery resource concerns.

 RECREATION:

No concerns; however, note that this unit is adjacent to the Karta inventoried roadless area to the south.

 SOILS/WETLANDS:

Slopes range from 30 to 65%. There are several rocky knobs throughout the unit. Forested wetlands are intermixed with the 

knobs throughout the unit. They occur on the Wadleigh soils. A minimum of partial suspension will meet soil and wetland 

resource concerns (BMPs 12.5, 13.5, and 13.9)

One temporary road will impact approximately 1/2 acre of forested wetland within the unit. The temporary road provides 

access to the unit from an existing forest road; there is no other feasible road access to the unit that would impact less 

wetland. Follow BMP 12.5 and 14.9. Provide adequate cross drainage, remove drainage structures, and close road after 

harvest (BMP 14.9).

 WILDLIFE:

Unit includes average snow deer winter range (all except northern edge of unit). East boundary of unit abuts OGR boundary. 

Legacy standard and guideline does not apply in this VCU.

Alternative 4: Unit dropped to help maintain connectivity between Honker large OGR and Karta wilderness and roadless 

area, and other habitat values.
2030121

2030100

1.9L.1L

1.12A

1.9L

1.10L.3 R

1.10L

1.2L.6 R

1.12A

1.5L

1 4. L 1. 5L

1.12A.2R

1 1. 0L.1R

1.10L.3R.2L

1.12A.1L

1.10L.3R.1R

1.2L.5L

1.10L.4R

1.10L.2R

1.2L

1.5L.1R

1 .12L

1.10L 1.10 L

1.10L.3R 1.10L

1990

1990

1990

1991

2005

2005

20

19

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 019 Alternative 2 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Partial Cut

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

595

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt2.mxd 14 July 2012

RR

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2030121

2030100

1.9L.1L

1.12A

1.9L

1.10L.3 R

1.10L

1.2L.6 R

1.12A

1.5L

1 4. L 1. 5L

1.12A.2R

1 1. 0L.1R

1.10L.3R.2L

1.12A.1L

1.10L.3R.1R

1.2L.5L

1.10L.4R

1.10L.2R

1.2L

1.5L.1R

1 .12L

1.10L 1.10 L

1.10L.3R 1.10L

1990

1990

1990

1991

2005

2005

20

19

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 019 Alternative 3 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

595

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt3.mxd 14 July 2012

RR

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Unit 20

Total Unit

Acres:

22.8 Prescription: Clearcut

VCU

Number:

595 Harvest

System:

Shovel

Net Harvest

Volume

(MBF):

647

LUD:

Timber Production

 SILVICULTURE:

Existing Condition: Unit 20 is an over mature, mixed species stand of old-growth timber. Western hemlock stem decay is high 

and mistletoe is light to moderate across the stand. Alaska-cedar decline is occurring across the stand. Defect is high 

throughout the stand for all species. Windthrow risk is moderate. Unit 20 is separated from a 2005 even-aged harvest to the 

northeast by two class III streams. This past harvest area does not currently meet the requirements of NFMA to no longer be 

considered an opening. This requires that the combined acreage of unit 20 and this past harvest not exceed 100 acres. Unit 

20 as planned meets this criteria. The southern portion of Unit 20 was dropped due to roadless.

Silvicultural Objective/Desired Condition: The desired condition for this stand is a highly productive, healthy, windfirm stand 

grown for timber management that retains residual trees as needed to meet standards and guides or other objectives. 

Silvicultural Prescription: Even-age Management - Clearcut 

This stand is being recommended for harvest at this time because it is not expected to obtain the desired condition given the 

current growth trajectory. This stand is over-mature with high stem decay and defect resulting in a situation where stand 

growth is being offset or exceeded by decay. Even-aged clear cutting is being prescribed to preclude or minimize the risk of 

windthrow post harvest, promote natural regeneration by opening up the canopy, and minimize defect and disease in the 

future stand to the maximum extent possible.

 TIMBER/LOGGING:

This unit is planned for shovel yarding to the proposed temporary road and existing NFS road 2030121.

 ENGINEERING/ROADS:

Unit is accessed by a proposed temporary roads, totaling 1,500 feet, as displayed on the unit card.

 BOTANY:

No Concerns

 FISHERIES:

Stream#: 1 (Steelhead Creek) Class: II Flagging: B/W C-Type: MCM

Concerns: none

Buffer (RMA): Class II for MCM greater of 100 feet or to the top of the side-slope break. 

Alternatives: 2, and 3 Buffer (RAW): no review needed

Protection: Category A.

Stream#: 1.2L Class: II, III Flagging: B/W, O/W C-Type: HCM, HCD, HCL, HCV

Concerns: blowdown, steep side-slopes, and active erosion.

Buffer (RMA): Class II for HCM and HCD greater of 100 feet or to the top of the side-slope break. Class III for HCD, HCL and 

HCV to the side-slope break.

Alternatives: 2 and 3 Buffer (RAW): Will be identified by IDT during layout.

Protection: Category A and B.

Stream#: 1.2L.4L Class: III Flagging: O/W C- Type: HCD

Concerns: blowdown, and steep side-slopes with exposed bedrock

Buffer (RMA): Class III for HCD to the top of the side-slope break.

Alternatives: 2 and 3 Buffer (RAW): no review needed

Protection: Category B.

Stream#: 1.3L Class: II, IV Flagging: B/W, G/W C- Type: HCO

Concerns: none

Unit

Number 20 Alternatives 2, 3

Summary of Concerns, Responses, BMPs and Mitigation

 INVASIVE SPECIES:

No Concerns
Unit 20

Buffer (RMA): Class II for HCO greater of 100 feet or to the top of the side-slope break. Class IV for HCO none.

Alternatives: 2 and 3 Buffer (RAW): no review needed

Protection: Category A and C.

Stream#: 1.3L.1R Class: II Flagging: B/W C- Type: HCO

Concerns: none

Buffer (RMA): Class II for HCO greater of 100 feet or to the top of the side-slope break.

Alternatives: 2 and 3 Buffer (RAW): no review needed

Protection: Category A.

Stream#: 1.5L Class: II, IV Flagging: B/W C- Type: HCO

Concerns: none.

Buffer (RMA): Class II for HCO greater of 100 feet or to the top of the side-slope break. Class IV for HCO none

Alternatives: 2 and 3 Buffer (RAW): no review needed

Protection: Category A.

Stream#: 1.5L.1R Class: II, IV Flagging: B/W C- Type: HCO

Concerns: none.

Buffer (RMA): Class II for HCO greater of 100 feet or to the top of the side-slope break. .

Alternatives: 2 and 3 Buffer (RAW): no review needed

Protection: Category A and C. 

All other streams in unit: Class: IV Flagging: G/W C- Type: HC or MM

Buffer (RMA): none Buffer (RAW): no review needed

Protection: Category C.

Temporary roads for Unit 20: Alternatives 2 and 3 -- The temporary road has not been field verified and will be surveyed 

before implementation. Two Class III stream crossings. If any additional stream crossings are found, crossings structures 

and locations will be approved by USFS, in consultation with fisheries biologist or hydrologist, prior to construction (BMP 

14.17). During construction of temporary roads implement BMPs 2.17, 13.10, 13.11, 13.16, 14.3, and 14.5.

 GEOLOGY/KARST:

No Concerns

 HERITAGE RESOURCES:

This unit was investigated per the third amended interagency Programmatic Agreement (PA) for historic properties. As 

specified by the PA, any potential adverse effect on historic properties (if any) was mitigated and portions of the Area of 

Potential Effect will be monitored by a qualified heritage specialist during and/or after actual ground disturbance.

 SCENERY:

The Scenic Integrity Objective for this unit is Very Low. The unit is Not Seen from any Visual Priority Travel Route or Use 

Area and is in Timber Production LUD. There are no scenery resource concerns.

 RECREATION:

No concerns; but note that the southern edge of the deferred portion of unit abuts the Karta roadless area.

 SOILS/WETLANDS:

Slopes range from nearly level to 45% throughout the unit. Forested wetlands are intermixed with upland soils throughout the 

unit. Forested wetland occupies approximately 45 to 50% of the unit (BMP 12.5). The soils and wetlands appear to be 

suitable for shovel yarding. Shovel yarding should follow BMPs 12.5, 13.2 and 13.9. Specifically, the shovel operator should 

avoid the small non-forested areas of the unit to prevent rutting. Slopes over 25% gradient may not be suitable for shovel 

yarding under some soil moisture conditions. Use care when approving shovel yarding on slopes over 25% gradient. Avoid 

track slippage and rutting. 

One temporary road will impact about 1/2 acre of wetland within the unit and 1/4 acre of wetland outside of the unit. Due to 

the extent of wetlands in the unit and adjacent to the existing road, the impacts proposed are the minimum required to access 

timber by road. Follow BMP 12.5 and 14.9 and provide adequate cross drainage, remove drainage structures, and close 

road after harvest (BMP 14.9).

 WILDLIFE:

Unit includes average snow deer winter range (entire unit). Legacy standard and guideline does not apply in this VCU.

Alternative 4: Unit dropped to help maintain connectivity between Honker large OGR and Karta wilderness and roadless 

area, and other habitat values.
2030121

2030120

1.12A

1.2L.6 R

1.2L.5L

1.6R

1.12A

1.12A.1L

1

1.12L

1.5L

1 4. L

1.12L

1.2L.3L

1.10L.3R.2L

1.10L.3R.1R

1.2L.1L

1.9L.1L

1.10L.2R

1 2. L 2. L

1.5 L

1.2L

1.5L.1R

1.10L.4R

1.10L

1.2L

1.3L

1.10 L

1.3L

1.10L.3R

1.1

1

0L.1R

1.1 2A

1.2L.4L

1.10L.3 R

1.10L

1.9L

1.10 L

1.3L.1R

1

1.2L

1

1990

2005 2005

20

19

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 020 Alternative 2 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Partial Cut

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

595

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt2.mxd 14 July 2012

RR

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2030121

2030120

1.12A

1.2L.6 R

1.2L.5L

1.6R

1.12A

1.12A.1L

1

1.12L

1.5L

1 4. L

1.12L

1.2L.3L

1.10L.3R.2L

1.10L.3R.1R

1.2L.1L

1.9L.1L

1.10L.2R

1 2. L 2. L

1.5 L

1.2L

1.5L.1R

1.10L.4R

1.10L

1.2L

1.3L

1.10 L

1.3L

1.10L.3R

1.1

1

0L.1R

1.1 2A

1.2L.4L

1.10L.3 R

1.10L

1.9L

1.10 L

1.3L.1R

1

1.2L

1

1990

2005 2005

20

19

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 020 Alternative 3 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

595

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt3.mxd 14 July 2012

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Unit 22

Total Unit

Acres:

24.2 Prescription: Clearcut

VCU

Number:

595 Harvest

System:

Shovel

Net Harvest

Volume

(MBF):

631

LUD:

Scenic Viewshed

 SILVICULTURE:

Existing Condition: Unit 22 has old-growth stand structure with a mixed western hemlock and western redcedar overstory. In 

the western hemlock the mistletoe rating is moderate with areas west of the forest road having a higher rate of infection. 

Defect is moderate for all species, except near the road where remaining trees are high defect. Windthrow risk is moderate. 

All past harvest areas adjacent to or near this unit are adequately restocked with trees at least 5 feet tall meeting the NFMA 

requirements for no longer being considered an opening.

Silvicultural Objective/Desired Condition: The desired condition for this stand is a highly productive, healthy, windfirm stand 

grown for timber management that retains residual trees as needed to meet standards and guides or other objectives. 

Silvicultural Prescription: Even-aged Management - Clearcut

This stand is being recommended for harvest at this time because it is not expected to obtain the desired condition given the 

current growth trajectory. This stand is over-mature with moderate stem decay and defect resulting in a situation where stand 

growth is being offset or exceeded by decay. High grading of the most valuable trees for personal use has occurred within 

200 feet of the forest road. This will affect the long term productivity of the stand if not corrected. Even-aged clear cutting is 

being prescribed to correct this situation near the road, preclude or minimize the risk of windthrow post harvest, promote 

natural regeneration by opening up the canopy, and minimize defect and disease in the future stand to the maximum extent 

possible.

This unit is adjacent to the Klawock-Control lake highway and due to the combination of Scenic Viewshed LUD and 

foreground distance zone, requires visual mitigation (see Scenery comments). In order to meet this requirement a screen of 

trees is being prescribed to be maintained to block the harvest area from view. Design this screen approximately as shown 

on the unit card map. Evaluate the effectiveness and windthrow risk of the planned screen at the time of layout and adjust as 

needed.

 TIMBER/LOGGING:

This unit is planned for of shovel yarding to the existing NFS road 2000300.

 ENGINEERING/ROADS:

No proposed road construction.

 BOTANY:

No Concerns

 FISHERIES:

Streams are tributaries to Steelhead Creek. 

Stream#: 1.1L.1L Class: III, IV Flagging: O/W, G/W C- Type: HCM, MMS 

Concerns: blowdown

Buffer (RMA): Class III for HCM to the top of side-slope break. Class IV for MMS none.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): Will be identified by IDT during layout.

Protection: Category B and C.

All other streams in unit: Class: IV Flagging: G/W C- Type: HC or MM

Buffer (RMA): none Buffer (RAW): no review needed.

Protection: Category C.

 GEOLOGY/KARST:

Unit

Number 22 Alternatives 2, 3, 4, 5

Summary of Concerns, Responses, BMPs and Mitigation

 INVASIVE SPECIES:

Bull thistle located in two infestations just southeast of unit along road 2030000 . Both have been treated in the past and are 

recommended for monitoring and follow-up treatments.
Unit 22

No Concerns

 HERITAGE RESOURCES:

This unit was investigated per the third amended interagency Programmatic Agreement (PA) for historic properties. As 

specified by the PA, any potential adverse effect on historic properties (if any) was mitigated and portions of the Area of 

Potential Effect will be monitored by a qualified heritage specialist during and/or after actual ground disturbance.

 SCENERY:

The Scenic Integrity Objective (SIO) for this unit is 2/3 High and 1/3 Very Low. The High SIO is due to Scenic Viewshed and 

Foreground along the Klawock-Control Lake highway. However, the original unit extended to within about 50 ft of the 

highway. Therefore, a visual buffer is established along the highway to screen views from this Visual Priority Route (as 

shown in unit card map and described in the silvicultural prescription); a stream buffer along the northeast side also helps 

screen the unit. As a result, the harvested area would begin beyond the visual buffer. Much of the unit can be screened and, 

because of intermediate VAC, the Forest Plan allows 5-15 acre openings. As noted in the prescription, the visual buffer or 

screen will be designed for wind firmness.

 RECREATION:

No concerns; however, note that this unit touches the Kogish inventoried roadless area along its northwest border.

 SOILS/WETLANDS:

Slopes average 10%. Less than 50% of the unit consists of forested wetland. The unit is dominant upland. The soils and 

wetlands are suitable for shovel yarding. Shovel yarding should follow BMPs 12.5, 13.2 and 13.9. Specifically, the shovel 

operator should avoid the small non-forested areas of the unit to prevent rutting. Slopes over 25% gradient may not be 

suitable for shovel yarding under some soil moisture conditions. Use care when approving shovel yarding on slopes over 

25% gradient. Avoid track slippage and rutting.

 WILDLIFE:

Unit includes average snow deer winter range (all except northern edge of unit); very western lobe is also deep snow marten 

habitat/deer winter range. Legacy standard and guideline does not apply in this VCU.
929

2000300

2030000

A1.1R

1.1 L

1.1L.2L.1L

A

1 1R

1.1R .3L

1.1L.1L

1.1L.2L

A

A1

1.1L

1.1L.3L

1987 1990

1990

1990

1983

1986

1990

1990 1983

2003

1987

1993

1986

2000

1990

1990

1986

3

3

3

2

22

4

1

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 022 Alternative 2 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Partial Cut

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

595

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt2.mxd 14 July 2012

RR

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929

2000300

2030000

A1.1R

1.1 L

1.1L.2L.1L

A

1 1R

1.1R .3L

1.1L.1L

1.1L.2L

A

A1

1.1L

1.1L.3L

1987 1990

1990

1990

1983

1986

1990

1990 1983

2003

1987

1993

1986

2000

1990

1990

1986

3

3

3

2

22

4

1

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 022 Alternative 3 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

595

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt3.mxd 14 July 2012

RR

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929

2000300

2030000

A1.1R

1.1 L

1.1L.2L.1L

A

1 1R

1.1R .3L

1.1L.1L

1.1L.2L

A

A1

1.1L

1.1L.3L

1987 1990

1990

1990

1983

1986

1990

1990 1983

2003

1987

1993

1986

2000

1990

1990

1986

3

3

3

2

22

4

1

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 022 Alternative 4 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

595

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt4.mxd 20 March 2012

RR

SR
929

2000300

2030000

A1.1R

1.1 L

1.1L.2L.1L

A

1 1R

1.1R .3L

1.1L.1L

1.1L.2L

A

A1

1.1L

1.1L.3L

1987 1990

1990

1990

1983

1986

1990

1990 1983

2003

1987

1993

1986

2000

1990

1990

1986

3

3

3

2

22

4

1

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 022 Alternative 5 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Sytematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

595

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt5.mxd 14 July 2012

RR

SR
Unit 24

Total Unit

Acres:

67.6 Prescription: 25% and 50% 

Removal

VCU

Number:

595 Harvest

System:

Helicopter

Net Harvest

Volume

(MBF):

2, 3, 5 - 753

4 - 552 LUD:

Modified Landscape, 

Scenic Viewshed

 SILVICULTURE:

Existing Condition: Unit 24 has old-growth stand structure. Overall defect is high in the western hemlock, and moderate in 

Sitka spruce and western redcedar. Windthrow risk is moderate. All past harvest areas adjacent to or near this unit are 

adequately restocked with trees at least 5 feet tall meeting the NFMA requirements for no longer being considered an 

opening. 

Silvicultural Objective/Desired Condition: The desired condition for this stand is a highly productive, healthy, windfirm stand 

grown for timber management that retains residual trees as needed to meet standards and guides for scenery, wildllife, and 

other objectives. 

Silvicultural Prescription: Uneven-age Management Single Tree Selection 

This unit is adjacent to the Klawock-Control lake highway and due to the combination of Scenic Viewshed/Modified 

Landscape LUD and foreground distance zone, requires visual mitigation (see Scenery comments). In order to meet this 

requirement uneven-aged management is being prescribed. At least 50 percent of the pretreatment basal area will be 

maintained in the eastern half of the unit and at least 75 percent will be maintained in the western half (see unit card map). 

Individual trees selected for harvest may occur in small groups but will generally be evenly distributed across the stand. Any 

small groups will usually be less than one acre but may occasionally go up to two acres in size where needed to address 

insect and disease issues or capitalize on existing advanced regeneration of desirable tree species. Trees selected for 

harvest will generally be well distributed and no large openings will occur as a result of the harvest. Review the marking 

guides and silvicultural prescription for more detailed information and direction for how to implement this prescription. The 

uneven-aged single tree selection regeneration method is being prescribed for this unit specifically to meet the scenery 

standard and guidelines, but also for wildlife habitat connectivity.

 TIMBER/LOGGING:

This unit is planned for helicopter yarding to existing NFS road 2000400.

 ENGINEERING/ROADS:

No proposed road construction.

 BOTANY:

No Concerns

 FISHERIES:

Streams are tributaries to Steelhead Creek. 

Stream#: 1.1L.10L Class: II, III Flagging: B/W, O/W C- Type: MMS, HCL 

Concerns: none

Buffer (RMA): Class II for MMS - greater of 120 feet, flood plain, riparian vegetation or soils, or riparian associated wetland 

fen. Class III for HCD to the side-slope break. 

Alternatives: 2, 3, 4 and 5 Buffer (RAW): no review needed

Protection: Category A and B.

Stream#: 1.1L.10L.1R Class: II, IV Flagging: B/W, G/W C-Type: PAB, HCL, HCM

Concerns: none

Buffer (RMA): Class II for PAB greater of 100 feet, flood plain, riparian vegetation or soils, or riparian associated wetland 

fens. Class II for HCL greater of 100 feet or the side-slope break. Class IV for HCM none. 

Alternatives: 2, 3, 4 and 5 Buffer (RAW): no review needed

Protection: Category A and C 

Unit

Number 24 Alternatives 2, 3, 4, 5

Summary of Concerns, Responses, BMPs and Mitigation

 INVASIVE SPECIES:

No Concerns
Unit 24

Stream#: 1.1L.10L.2R Class: II Flagging: B/W C-Type: PAB

Concerns: none

Buffer (RMA): Class II for PAB greater of 100 feet, flood plain, riparian vegetation or soils, or riparian associated wetland 

fens.

Alternatives: 2, 3, 4 and 5 Buffer (RAW): no review needed

Protection: Category A. 

All other streams in unit: Class: IV Flagging: G/W C- Type: HC or MM

Buffer (RMA): none Buffer (RAW): no review needed

Protection: Category C.

 GEOLOGY/KARST:

No Concerns

 HERITAGE RESOURCES:

This unit was investigated per the third amended interagency Programmatic Agreement (PA) for historic properties. As 

specified by the PA, any potential adverse effect on historic properties (if any) was mitigated and portions of the Area of 

Potential Effect will be monitored by a qualified heritage specialist during and/or after actual ground disturbance.

 SCENERY:

The Scenic Integrity Objective (SIO) for this unit is a combination of High, Moderate, and Low, due to its viibility from the 

Klawock-Control Lake highway. The western 15 acres of the unit are in Scenic Viewshed LUD and the remainder is in 

Modified Landscape. Almost the entire unit is in Foreground and because of its visibility, size, and intermediate to low VAC, 

the prescription for the unit was changed to helicopter partial harvest with 75% basal area retention in the western most 

visible portions of the unit, and 50% retention in the eastern portion. A landscape architect is to be consulted during 

implementation to ensure proper visual mitigation during harvest.

 RECREATION:

Harvest in this unit would be heard and partly seen from the Control Lake Cabin. Sound travels across the lake but these 

units are across the highway and there is already a significant amount of sound at the cabin from the road.

 SOILS/WETLANDS:

Slopes range from 25 to 80%. Forested wetlands are interspersed throughout the unit. The slopes greater than 72% are 

located on rocky outcrops and cliffs. These slopes over 72% are suitable for harvest with minimum partial suspension. A 

minimum of partial suspension would meet soil and wetland resource concerns (BMPs 12.5, 13.5, and 13.9).

 WILDLIFE:

Unit includes average snow deer winter range (entire unit). Legacy standard and guideline does not apply in this VCU.

Prescriptions are 25 and 50 percent basal area removal primarily for scenery concerns, but also to maintain connectivity in 

the Steelhead Drainage and between Honker large OGR complex and small OGR in VCU 5950 to west.
2000400

929

1

A10.1L

A10.2L

1.1L.10L.3R

1.1L.10L.1R

1.1L.10L2. R

1.1L.10L

1.10 R

1.1L.10L

1.1 L

1.11R

1.12R

A10.1L.1L

1.1L.11L

1991

1991

2004 2004

24

25

26

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 024 Alternative 2 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Partial Cut

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

595

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt2.mxd 14 July 2012

RR

SR
2000400

929

1

A10.1L

A10.2L

1.1L.10L.3R

1.1L.10L.1R

1.1L.10L2. R

1.1L.10L

1.10 R

1.1L.10L

1.1 L

1.11R

1.12R

A10.1L.1L

1.1L.11L

1991

1991

2004 2004

24

25

26

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 024 Alternative 3 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

595

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt3.mxd 14 July 2012

RR

SR
2000400

929

1

A10.1L

A10.2L

1.1L.10L.3R

1.1L.10L.1R

1.1L.10L2. R

1.1L.10L

1.10 R

1.1L.10L

1.1 L

1.11R

1.12R

A10.1L.1L

1.1L.11L

1991

1991

2004 2004

24

25

26

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 024 Alternative 4 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

595

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt4.mxd 20 March 2012

RR

SR
2000400

929

1

A10.1L

A10.2L

1.1L.10L.3R

1.1L.10L.1R

1.1L.10L2. R

1.1L.10L

1.10 R

1.1L.10L

1.1 L

1.11R

1.12R

A10.1L.1L

1.1L.11L

1991

1991

2004 2004

24

25

26

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 024 Alternative 5 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Sytematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

595

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt5.mxd 14 July 2012

RR

SR
Unit 25

Total Unit

Acres:

14.0 Prescription: Clearcut

VCU

Number:

595 Harvest

System:

Cable

Net Harvest

Volume

(MBF):

305

LUD:

Modified Landscape

 SILVICULTURE:

Existing Condition: Unit 25 has highly defective, large diameter western hemlock and Sitka spruce in the west and small 

diameter, defective western hemlock, Alaska cedar and western redcedar in the east as well as above the road. The stand 

structure is old-growth. The mistletoe rating is moderate. Alaska cedar decline is occurring in the eastern half of the unit. 

Windthrow risk is moderate. All past harvest areas adjacent to or near this unit are adequately restocked with trees at least 5 

feet tall meeting the NFMA requirements for no longer being considered an opening.

Silvicultural Objective/Desired Condition: The desired condition for this stand is a highly productive, healthy, windfirm stand 

grown for timber management that retains residual trees as needed to meet standards and guides or other objectives. 

Silvicultural Prescription: Even-age Management - Clearcut

This stand is being recommended for harvest at this time because it is not expected to obtain the desired condition given the 

current growth trajectory. Trees are over-mature with heavy stem decay and defect resulting in a situation where stand 

growth is being exceeded by decay. Even-aged clear cutting is being prescribed to preclude or minimize the risk of windthrow 

post harvest, promote natural regeneration by opening up the canopy, and minimize defect and disease in the future stand to 

the maximum extent possible.

 TIMBER/LOGGING:

This unit is planned for uphill and downhill cable yarding to landings on the existing NFS road 2000400.

 ENGINEERING/ROADS:

No proposed road construction.

 BOTANY:

No Concerns

 FISHERIES:

Streams are tributaries to Steelhead Creek. 

Stream#: 1 Class: II Flagging: B/W C- Type: PAB, PAS

Concerns: none

Buffer (RMA): Class II for PAB and PAS greater of 100 feet, flood plain, riparian vegetation or soils, or riparian associated 

wetland fens. 

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed

Protection: Category A.

Stream#: 1.10R Class: II, III Flagging: B/W, O/W C- Type: MMS 

Concerns: none

Buffer (RMA): Class II for MMS greater of 120 feet, flood plain, riparian vegetation or soils, or riparian associated wetland 

fens. Class III for HCL to the top of the side-slope break.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed

Protection: Category A and B.

Stream#: 1.11R Class: II, IV Flagging: B/W, G/W C- Type: HCO 

Concerns: none

Buffer (RMA): Class II for HCO greater of 100 feet or to the top of the side-slope break. Class IV for HCO none.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed

Protection: Category A and C.

Unit

Number 25 Alternatives 2, 3, 4, 5

Summary of Concerns, Responses, BMPs and Mitigation

 INVASIVE SPECIES:

No Concerns
Unit 25

Stream#: 1.12R Class: II, IV Flagging: B/W, G/W C- Type: HCL, HCO 

Concerns: none

Buffer (RMA): Class II for HCL greater of 100 feet or to the top of the side-slope break. Class IV for HCO none.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed

Protection: Category A and C.

 GEOLOGY/KARST:

No Concerns

 HERITAGE RESOURCES:

This unit was investigated per the third amended interagency Programmatic Agreement (PA) for historic properties. As 

specified by the PA, any potential adverse effect on historic properties (if any) was mitigated and portions of the Area of 

Potential Effect will be monitored by a qualified heritage specialist during and/or after actual ground disturbance.

 SCENERY:

The Scenic Integrity Objective (SIO) for this unit is Low. It is in Modified Landscape, due to its visibility from the Control LakeNaukati highway. However, the unit is set back at least 2/3 mile from the highway and the unit is only 14 acres in size, which 

is smaller than the permissable opening size under any VAC category.

 RECREATION:

Harvest activities in this unit would be visible to recreationists using the existing road. Recreationists may also encounter 

logging traffic on the road. Harvest in this unit would be consistent with the applicable LUD (Modified Landscape) and would 

not change existing ROS settings. Harvest has occurred along the road system in the recent past (less than 30 years).

Harvest in this unit would be heard and partly seen from the Control Lake Cabin. Sound travels across the lake but these 

units are across the highway and there is already a significant amount of sound at the cabin from the road.

 SOILS/WETLANDS:

Slopes range between 45 and 70%. Forested wetlands are interspersed throughout the unit. A minimum of partial 

suspension would meet soil and wetland resource concerns (BMPs 12.5, 13.5, and 13.9).

 WILDLIFE:

Unit includes average snow deer winter range (entire unit); western lobe is also deep snow marten habitat/deer winter range. 

Legacy standard and guideline does not apply in this VCU.
2000400

929

1.1L.10L

1

.1L.10L.1R

1.2R

A10.1L

1.10 R

A10

1.11R

1

A9

A10

1.12R

A10.1L.1L

1.1L.11L

A10.2L

1991

1991

24

25 26

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 025 Alternative 2 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Partial Cut

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

595

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt2.mxd 14 July 2012

RR

SR
2000400

929

1.1L.10L

1

.1L.10L.1R

1.2R

A10.1L

1.10 R

A10

1.11R

1

A9

A10

1.12R

A10.1L.1L

1.1L.11L

A10.2L

1991

1991

24

25 26

360

361

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 025 Alternative 3 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

595

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt3.mxd 14 July 2012

RR

SR
2000400

929

1.1L.10L

1

.1L.10L.1R

1.2R

A10.1L

1.10 R

A10

1.11R

1

A9

A10

1.12R

A10.1L.1L

1.1L.11L

A10.2L

1991

1991

24

25 26

361

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 025 Alternative 4 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

595

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt4.mxd 20 March 2012

RR

SR
2000400

929

1.1L.10L

1

.1L.10L.1R

1.2R

A10.1L

1.10 R

A10

1.11R

1

A9

A10

1.12R

A10.1L.1L

1.1L.11L

A10.2L

1991

1991

24

25 26

360

361

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 025 Alternative 5 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Sytematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

595

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt5.mxd 14 July 2012

RR

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Unit 26

Total Unit

Acres:

30.5 Prescription: Clearcut

VCU

Number:

596 Harvest

System:

Cable, Shovel

Net Harvest

Volume

(MBF):

683

LUD:

Modified Landscape

 SILVICULTURE:

Existing Condition: This unit has old-growth stand structure. Heavy stem decay is found in the western hemlock. Mistletoe is 

light to moderate. Defect is high for all species. A high number of dead redcedar are present. Windthrow risk is moderate. All 

past harvest areas adjacent to or near this unit are adequately restocked with trees at least 5 feet tall meeting the NFMA 

requirements for no longer being considered an opening. 

Silvicultural Objective/Desired Condition: The desired condition for this stand is a highly productive, healthy, windfirm stand 

grown for timber management that retains residual trees as needed to meet standards and guides or other objectives. 

Silvicultural Prescription: Even-age Management - Clearcut

This stand is being recommended for harvest at this time because it is not expected to obtain the desired condition given the 

current growth trajectory. This stand is over-mature with high stem decay and defect resulting in a situation where stand 

growth is being offset or exceeded by decay. Even-aged clear cutting is being prescribed to preclude or minimize the risk of 

windthrow post harvest, promote natural regeneration by opening up the canopy, and minimize defect and disease in the 

future stand to the maximum extent possible.

 TIMBER/LOGGING:

This unit is planned for a combination of shovel and cable yarding. Cable settings are planned for uphill yarding to landings 

on the proposed temporary road. Shovel settings are planned for yarding to the proposed temporary road and existing 

NFS road 2000400 .

 ENGINEERING/ROADS:

Unit is accessed by a proposed temporary roads, totaling 1,500 feet, as displayed on the unit card. The first 300 feet of the 

road will be constructed across State lands.

 BOTANY:

No Concerns

 FISHERIES:

Streams are tributaries to Control Lake. 

Stream#: 1 Class: II, IV Flagging: B/W, G/W C- Type: HCO 

Concerns: none

Buffer (RMA): Class II for HCO greater of 100 feet or the top of the side-slope break. Class IV for HCO none.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed

Protection: Category A and C.

Stream#: 1.1L Class: II Flagging: B/W C- Type: HCO

Concerns: none

Buffer (RMA): Class II for HCO greater of 100 feet or to the top of the side-slope break.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed

Protection: Category A.

Stream#: 1.1L.1R Class: II Flagging: B/W C- Type: MMO

Concerns: none

Buffer (RMA): Class II for MMO Class II for MMO greater of 120 feet, flood plain, riparian vegetation or soils, or riparian 

associated wetland fens.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed

Unit

Number 26 Alternatives 2, 3, 4, 5

Summary of Concerns, Responses, BMPs and Mitigation

 INVASIVE SPECIES:

Canada thistle infestation located east of unit along state highway. Infestation has been treated in the past and is 

recommended for monitoring and follow-up treatment.
Unit 26

Protection: Category A.

Stream#: 1.2R Class: II, IV Flagging: B/W, GW C- Type: MMO, HCO 

Concerns: blowdown

Buffer (RMA): Class II for MMO greater of 120 feet, flood plain, riparian vegetation or soils, or riparian associated wetland 

fens. Class II for HCO greater of 100 feet or to the top of the side-slope break. Class IV for HCO none.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed 

Protection: Category A and C.

All other streams in unit: Class: IV Flagging: G/W C- Type: HC or MM

Buffer (RMA): none Buffer (RAW): no review needed 

Protection: Category C 

Temporary roads for Unit 26: All Alternatives -- No known stream crossings. If any stream crossings are found, crossings 

structures and locations will be approved by USFS, in consultation with fisheries biologist or hydrologist, prior to construction 

(BMP 14.17). During construction of temporary roads implement BMPs 12.17, 13.10, 13.11, 13.16, 14.3, and 14.5.

 GEOLOGY/KARST:

No Concerns

 HERITAGE RESOURCES:

This unit was investigated per the third amended interagency Programmatic Agreement (PA) for historic properties. As 

specified by the PA, any potential adverse effect on historic properties (if any) was mitigated and portions of the Area of 

Potential Effect will be monitored by a qualified heritage specialist during and/or after actual ground disturbance.

 SCENERY:

The Scenic Integrity Objective (SIO) for this unit is divided between Moderate and Very Low. The unit is in Modified 

Landscape and about half is in Foreground and half is Not Seen. The unit is set back from 350 to 1,400 ft. from the KlawockControl Lake Juction highway, has a buffer of trees around it, and about 14 acres are not seen. Therefore, clearcutting is 

permissable.

 RECREATION:

Harvest activities in this unit would be visible to recreationists using the existing road. Recreationists may also encounter 

logging traffic on the road. Harvest in this unit would be consistent with the applicable LUD (Modified Landscape) and would 

not change existing ROS settings. Harvest has occurred along the road system in the recent past (less than 30 years).

Harvest in this unit would be heard and partly seen from the Control Lake Cabin. Sound travels across the lake but these 

units are across the highway and there is already a significant amount of sound at the cabin from the road.

 SOILS/WETLANDS:

Slopes range from nearly level to 40%. A benchy, exposed bedrock cliff is located between the existing road and the 

proposed temporary road near the center of the unit. Forested wetlands occupy less than 50% of the unit and are 

concentrated in the northern part of the unit, between knobs. The soils and wetlands are suitable for partial suspension cable 

yarding or shovel yarding. All logging systems should follow BMPs 12.5, 13.2 and 13.9. Specifically, the shovel operator 

should avoid the small non-forested areas of the unit to prevent rutting. Slopes over 25% gradient may not be suitable for 

shovel yarding under some soil moisture conditions. Use care when approving shovel yarding on slopes over 25% gradient. 

Avoid track slippage and rutting. 

The proposed temporary road will impact about 1 acre of forested wetland within the unit and about 0.1 acre outside of the 

unit. Wetland avoidance is not feasible due to access requirements to the northern portion of the unit, nearly all of which is 

forested wetland and avoidance of the bedrock cliff. Provide adequate cross drainage, remove drainage structures, and 

close road after harvest (BMP 14.9).

 WILDLIFE:

Unit includes average snow deer winter range (entire unit), some of which is also deep snow marten habitat/deer winter 

range (southern 2/3 of unit). Legacy standard and guideline does not apply in this VCU.
2000400

929

1

1.1L.1R

1

1.1L

1.11R

2.2R

1

2.3R

1.12R

1.2R

1.1L.11L

2.4R

1991

2005

24

25

26

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 026 Alternative 2 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Partial Cut

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

595,596

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt2.mxd 14 July 2012

RR

SR
2000400

929

1

1.1L.1R

1

1.1L

1.11R

2.2R

1

2.3R

1.12R

1.2R

1.1L.11L

2.4R

1991

2005

24

25

26

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 026 Alternative 3 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

595,596

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt3.mxd 14 July 2012

RR

SR
2000400

929

1

1.1L.1R

1

1.1L

1.11R

2.2R

1

2.3R

1.12R

1.2R

1.1L.11L

2.4R

1991

2005

24

25

26

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 026 Alternative 4 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

595,596

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt4.mxd 20 March 2012

RR

SR
2000400

929

1

1.1L.1R

1

1.1L

1.11R

2.2R

1

2.3R

1.12R

1.2R

1.1L.11L

2.4R

1991

2005

24

25

26

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 026 Alternative 5 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Sytematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

595,596

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt5.mxd 14 July 2012

RR

SR
Unit 27

Total Unit

Acres:

43.4 Prescription: Clearcut

VCU

Number:

576,

 596

Harvest

System:

Shovel

Net Harvest

Volume

(MBF):

1,041

LUD:

Scenic Viewshed

 SILVICULTURE:

Existing Condition: This unit has old-growth stand structure. In the western hemlock stem decay is moderate to high and 

mistletoe is light. Alaska cedar decline is heavy along muskeg edges and poorly drained areas. Defect for all species is high. 

All past harvest areas adjacent to or near this unit are adequately restocked with trees at least 5 feet tall meeting the NFMA 

requirements for no longer being considered an opening. 

Silvicultural Objective/Desired Condition: The desired condition for this stand is a highly productive, healthy, windfirm stand 

grown for timber management that retains residual trees as needed to meet standards and guides or other objectives. 

Silvicultural Prescription: Even-aged Management - Clearcut

This stand is being recommended for harvest at this time because it is not expected to obtain the desired condition given the 

current growth trajectory. This stand is over-mature with heavy stem decay and defect resulting in a situation where stand 

growth is being offset or exceeded by decay. Even-aged clear cutting is being prescribed to preclude or minimize the risk of 

windthrow post harvest, promote natural regeneration by opening up the canopy, and minimize defect and disease in the 

future stand to the maximum extent possible. Portions of the unit along the southern and western boundaries were dropped 

due to poor timber volumes/values.

This unit is adjacent to the Control Lake-Thorne Bay highway and due to the combination of Scenic Viewshed LUD and 

foreground distance zone, requires visual mitigation (see Scenery comments). In order to meet this requirement a screen of 

trees is being prescribed to be maintained to block the harvest area from view. Design this screen approximately as shown 

on the unit card map. Evaluate the effectiveness and windthrow risk of the planned screen at the time of layout and adjust as 

needed.

 TIMBER/LOGGING:

This unit is planned for shovel yarding to existing NFS road 3010000, and the proposed temporary road.

 ENGINEERING/ROADS:

Unit is accessed by a proposed temporary road, totaling 4,300 feet, as displayed on the unit card. Approximately 1,200 feet 

of decommisioned road bed is being used as a base for the new construction.

 BOTANY:

No Concerns

 FISHERIES:

Streams are tributaries to Control Creek

Stream#: 1 Class: I, II Flagging: B/W C- Type: PAB , MMS, HCM, HCL 

Concerns: active erosion

Buffer (RMA): Class I greater of 100 feet (PAB) and 120 feet (MMS), flood plain, riparian vegetation or soils, or riparian 

associated wetland fens. Class I and II for HCM greater of 100 feet or the top of side-slope break. 

Alternatives: 2, 3, and 5 Buffer (RAW): no review needed

Protection: Category A

Stream#: 1.1R Class: I Flagging: B/W C- Type: MMS

Concerns: blowdown

Buffer (RMA): Class I for MMS greater of 120 feet, flood plain, riparian vegetation or soils, or riparian associated wetland 

fens.

Alternatives: 2, 3, and 5 Buffer (RAW): no review needed

Unit

Number 27 Alternatives 2, 3, 5

Summary of Concerns, Responses, BMPs and Mitigation

 INVASIVE SPECIES:

No Concerns
Unit 27

Protection: Category A 

Stream#: 1.2R Class: I, IV Flagging: B/W, G/W C- Type: MMO, HCO

Concerns: none

Buffer (RMA): Class I for MMO greater of 120 feet, flood plain, riparian vegetation or soils, or riparian associated wetland 

fens. Class IV for HCO none.

Alternatives: 2, 3, and 5 Buffer (RAW): no review needed

Protection: Category A and C 

Stream#: 1.3R Class: III, IV Flagging: O/W, G/W C- Type: HCM, HCL

Concerns: none

Buffer (RMA): Class III for HCM greater of 100 feet or to the top of side-slope break. Class IV for HCL none.

Alternatives: 2, 3, and 5 Buffer (RAW): no review needed

Protection: Category B and C 

All other streams in unit: Class: IV Flagging: G/W C- Type: HC or MM

Buffer (RMA): none Buffer (RAW): no review needed 

Protection: Category C 

Temporary roads for Unit 27: Alternatives 2, 3, and 5 -- No known stream crossings. The temporary roads have not been 

field verified and will be surveyed before implementation. If any stream crossings are found, crossings structures and 

locations will be approved by USFS, in consultation with fisheries biologist or hydrologist, prior to construction (BMP 14.17). 

During construction of temporary roads implement BMPs 12.7, 13.10, 13.11, 13.16, 14.3, and 14.5.

 GEOLOGY/KARST:

No Concerns

 HERITAGE RESOURCES:

This unit was investigated per the third amended interagency Programmatic Agreement (PA) for historic properties. As 

specified by the PA, any potential adverse effect on historic properties (if any) was mitigated and portions of the Area of 

Potential Effect will be monitored by a qualified heritage specialist during and/or after actual ground disturbance.

 SCENERY:

The Scenic Integrity Objective (SIO) for this unit is mostly High with 7 acres of Very Low. The majoirty of the unit is in Scenic 

Viewshed LUD and is in Foreground along the Control Lake-Thorne Bay highway. The original unit extended to the edge of 

the highway in some areas and was set back up to 250 ft in other areas; because of this, a visual buffer was established 

along the highway to screen views from this Visual Priority Route (as shown on unit card map and described in the 

silvicultural prescription). Because most of the unit has an Intermediate VAC, allowable opening size is 15 to 40 acres under 

the Forest Plan. As noted in the prescription, the visual buffer or screen will be designed for wind firmness.

 RECREATION:

Harvest in this unit would be heard from Eagle’s Nest Campground and Balls Lake Picnic Area. This would have short-term 

adverse impacts on the experience of recreationists using these areas.

 SOILS/WETLANDS:

Based on review of digital elevation model, slopes range from nearly level to about 35%; most slopes are below 25%. 

There are approximately 6 acres (13% of the unit) of forested wetland near the southeastern boundary of the unit. The soils 

and wetlands are suitable for shovel yarding. Shovel yarding should follow BMPs 12.5, 13.2 and 13.9. Specifically, the shovel 

operator should avoid the small non-forested areas of the unit to prevent rutting. Slopes over 25% gradient may not be 

suitable for shovel yarding under some soil moisture conditions. Use care when approving shovel yarding on slopes over 

25% gradient. Avoid track slippage and rutting. 

The proposed temporary road will impact about 1.5 acres of forested wetland within the unit and about 1.5 acres of forested 

wetland outside of the unit. Wetland avoidance is not feasible due to location of forested wetlands between existing road and 

unit, minimizing temporary road length, and visual screening. Provide adequate cross drainage, remove drainage structures, 

and close road after harvest (BMP 14.9).

 WILDLIFE:

Unit includes average snow deer winter range (entire unit), some of which is also deep snow marten habitat/deer winter 

range (all but eastern and western lobes of unit). Legacy standard and guideline does not apply in this VCU. Northern and 

western edges of unit abuts Honker large OGR complex.

Alternative 4: Unit dropped to maintain north-south connectivity in Rio Beaver Drainage (between Honker large OGR and 

Karta Wilderness) and other habitat values.
3000025

3010100

3010000

929

1.3

1

R

.1R.1L

1.2R

1.1R

1

1

1

.1R

1989

27

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 027 Alternative 2 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Partial Cut

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

576,596

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt2.mxd 14 July 2012

RR

SR
3000025

3010100

3010000

929

1.3

1

R

.1R.1L

1.2R

1.1R

1

1

1

.1R

1989

27

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 027 Alternative 3 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

576,596

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt3.mxd 14 July 2012

RR

SR
3000025

3010100

3010000

929

1.3

1

R

.1R.1L

1.2R

1.1R

1

1

1

.1R

1989

27

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 027 Alternative 5 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Sytematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

576,596

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt5.mxd 14 July 2012

RR

SR
Unit 33

Total Unit

Acres:

8.4 Prescription: Clearcut

VCU

Number:

597.

2

Harvest

System:

Helicopter

Net Harvest

Volume

(MBF):

200

LUD:

Modified Landscape, 

Timber Production

 SILVICULTURE:

Existing Condition: Unit 33 is an old-growth stand. Stem decay & stem breakage are moderate occurrence and the most 

common damage agents affecting volume in the unit. Windthrow risk is moderate. All past harvest areas adjacent to or near 

this unit are adequately restocked with trees at least 5 feet tall meeting the NFMA requirements for no longer being 

considered an opening. 

Silvicultural Objective/Desired Condition: The desired condition for this stand is a highly productive, healthy, windfirm stand 

grown for timber management that retains residual trees as needed to meet standards and guides or other objectives. 

Silvicultural Prescription: Even-age Management - Clearcut

This stand is being recommended for harvest at this time because it is not expected to obtain the desired condition given the 

current growth trajectory. This stand is mature with moderate stem decay and defect resulting in a situation where stand 

growth is static. Even-aged clear cutting is being prescribed to preclude or minimize the risk of windthrow post harvest, 

promote natural regeneration by opening up the canopy, and minimize defect and disease in the future stand to the 

maximum extent possible. No legacy is required because planned opening is less than 20 acres.

 TIMBER/LOGGING:

This unit is planned for helicopter yarding to landings on existing NFS road 3012200.

Note that the unit is adjacent to the Karta inventoried roadless area on the west and north.

 ENGINEERING/ROADS:

Unit is accessed by reconstructing NFS road 3012200, totaling 4,400 feet. See corresponding road card for detailed 

information on NFS road reconstruction. This road is also used to access Units 34 and 505.

 BOTANY:

No Concerns

 FISHERIES:

Streams are tributaries to Rio Beaver Creek. 

Stream#: 1.4R.3L Class: III Flagging: O/W C- Type: HCM

Concerns: blowdown and active erosion.

Buffer (RMA): Class III for HCM to the side-slope break.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed

Protection: Category B 

All other streams in unit: Class: IV Flagging: G/W C- Type: HC or MM

Buffer (RMA): none Buffer (RAW): no review needed 

Protection: Category C

 GEOLOGY/KARST:

No Concerns

 HERITAGE RESOURCES:

This unit was investigated per the third amended interagency Programmatic Agreement (PA) for historic properties. As 

specified by the PA, any potential adverse effect on historic properties (if any) was mitigated and portions of the Area of 

Potential Effect will be monitored by a qualified heritage specialist during and/or after actual ground disturbance.

Unit

Number 33 Alternatives 2, 3, 4, 5

Summary of Concerns, Responses, BMPs and Mitigation

 INVASIVE SPECIES:

No Concerns
Unit 33

 SCENERY:

The Scenic Integrity Objective (SIO) for this unit is Low. It is in Modified Landscape, due to its visibility from the Control LakeThorne Bay highway and is in Middleground. However, the unit is set back over 1-1/2 mile from the highway and the unit is 

less than 12 acres in size. Therefore, clearcutting is permissable.

 RECREATION:

No concerns; however, the unit is adjacent to the Karta inventoried roadless area on the west and north.

 SOILS/WETLANDS:

Slopes range from 70 to 95% in unit the original unit. No wetlands were identified in the unit. About 1 acre in the southern 

part of the unit is suitable for harvest with full suspension only. About 3 acres were excluded due to very high landslide 

potential, colluvial activity, steep slopes, and unstable drainages. In the remainder of the unit, a minimum of partial 

suspension will meet soil and wetland resource concerns (BMPs 12.5, 13.5, and 13.9).

 WILDLIFE:

Unit includes average snow deer winter range (entire unit), all of which is also deep snow marten habitat/deer winter range 

Wolf sign documented in unit. Legacy standard and guideline applies in this VCU; however there are no requirements for this 

unit because the original planned unit was less than 20 acres.
3012000 3012000

3012200

1.3R.1R

A1.1L

A1

1.5R.1R

1.5R

1.3R.3R

1.3R.2L

1. 4 R

1.5R

1.4R .2L

1.3R.2R

1.4R.1L

1.4R.1R

1.4R.3L.1L

A1

1.4R.1R.1R

1.3R

1

1.4R.4L

A1.6R

1.4R.3L

A1

1.4R

1.3R.1L

1966

1966

33

34

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 033 Alternative 2 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Partial Cut

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

597.2

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt2.mxd 14 July 2012

RR

SR
3012000

3012000

3012200

A1.6R

1.4R.3L

A1

1.4R

1.3R.1L

1.3R.1R

A1.1L

A1

1.5R.1R

1.5R

1.3R.3R

1.3R.2L

1. 4 R

1.5R

1.4R .2L

1.3R.2R

1.4R.1L

1.4R.1R

1.4R.3L.1L

A1

1.4R.1R.1R

1.3R

1

1.4R.4L

1966

1966

34

504

505

33

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 033 Alternative 3 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

597.2

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt3.mxd 14 July 2012

RR

SR
3012000

3012000

3012200

A1.6R

1.4R.3L

A1

1.4R

1.3R.1L

1.3R.1R

A1.1L

A1

1.5R.1R

1.5R

1.3R.3R

1.3R.2L

1. 4 R

1.5R

1.4R .2L

1.3R.2R

1.4R.1L

1.4R.1R

1.4R.3L.1L

A1

1.4R.1R.1R

1.3R

1

1.4R.4L

1966

1966

34

504

505

33

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 033 Alternative 4 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

597.2

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt4.mxd 20 March 2012

RR

SR
3012000

3012000

3012200

A1.6R

1.4R.3L

A1

1.4R

1.3R.1L

1.3R.1R

A1.1L

A1

1.5R.1R

1.5R

1.3R.3R

1.3R.2L

1. 4 R

1.5R

1.4R .2L

1.3R.2R

1.4R.1L

1.4R.1R

1.4R.3L.1L

A1

1.4R.1R.1R

1.3R

1

1.4R.4L

1966

1966

34

504

505

33

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 033 Alternative 5 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Sytematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

597.2

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt5.mxd 14 July 2012

RR

SR
Unit 34

Total Unit

Acres:

11.4 Prescription: Clearcut

VCU

Number:

597.

2

Harvest

System:

Cable, Shovel

Net Harvest

Volume

(MBF):

271

LUD:

Timber Production

 SILVICULTURE:

Existing Condition: Unit 34 has old-growth stand structure. The incidence of mistletoe in the western hemlock is high to very 

high, while stem rot is moderate to high. In the Alaska-cedar decline is high. Defect for the stand is moderate to high for all 

species. Windthrow risk is moderate. All past harvest areas adjacent to or near this unit are adequately restocked with trees 

at least 5 feet tall meeting the NFMA requirements for no longer being considered an opening.

Silvicultural Objective/Desired Condition: The desired condition for this stand is a highly productive, healthy, windfirm, stand 

grown for timber management that retains residual trees as needed to meet standards and guides or other objectives. 

Silvicultural Prescription: Even-age Management - Clearcut

This stand is being recommended for harvest at this time because it is not expected to obtain the desired condition given the 

current growth trajectory. This stand is over-mature with moderate to high stem decay and defect resulting in a situation 

where stand growth is being offset or exceeded by decay. Even-aged clear cutting is being prescribed to preclude or 

minimize the risk of windthrow post harvest, promote natural regeneration by opening up the canopy, and minimize defect 

and disease in the future stand to the maximum extent possible. No legacy is required because planned opening is less than 

20 acres.

 TIMBER/LOGGING:

This unit is planned for a combination of shovel and cable yarding. Cable settings are planned for uphill yarding to landings 

on the proposed temporary road. Shovel settings are planned for yarding to the proposed temporary road.

 ENGINEERING/ROADS:

Unit is accessed by a proposed temporary road, totaling 700 feet, as displayed on the unit card. Unit is also accessed by 

reconstructing NFS road 3012200, totaling 4400 feet. See corresponding road card for detailed information on NFS road 

reconstruction. This road is also used to access Units 33 and 505.

 BOTANY:

No Concerns

 FISHERIES:

Streams are tributaries to Rio Beaver Creek. Stream 1 characteristics do not include project-specific, field-verified, 

information.

Stream#: 1 (Rio Beaver Creek) Class: I Flagging: B/W C- Type: FPM

Concerns: none known

Buffer (RMA): Class I for FPM greater of 130 feet, flood plain, riparian vegetation or soils, or riparian associated wetland 

fens. 

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed

Protection: Category A 

Stream#: 1.4R Class: I, II, III Flagging: B/W, O/W C- Type: MMS, HCM, HCD

Concerns: blowdown, active erosion

Buffer (RMA): Class I for MMS greater of 120 feet, flood plain, riparian vegetation or soils, or riparian associated wetland 

fens. Class I and II for HCM greater of 100 feet or the top of side-slope break. Class III for HCD to the side-slope break.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): Will be identified by IDT during layout.

Protection: Category A and B

Stream#: 1.5R Class: I, II Flagging: B/W C- Type: FPO, HCO

Unit

Number 34 Alternatives 2, 3, 4, 5

Summary of Concerns, Responses, BMPs and Mitigation

 INVASIVE SPECIES:

No Concerns
Unit 34

Concerns: none 

Buffer (RMA): Class I for FPO greater of 130 feet, flood plain, riparian vegetation or soils, or riparian associated wetland 

fens. Class I and II for HCO greater of 100 feet or the top of side-slope break.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed.

Protection: Category A 

All other streams in unit: Class: IV Flagging: G/W C- Type: HC or MM

Buffer (RMA): none Buffer (RAW): no review needed.

Protection: Category C 

Temporary roads for Unit 34: All Alternatives -- No known stream crossings. The temporary roads have not been field 

verified and will be surveyed before implementation. If any stream crossings are found, crossings structures and locations 

will be approved by USFS, in consultation with fisheries biologist or hydrologist, prior to construction (BMP 14.17). During 

construction of temporary roads implement BMPs 12.17, 13.10, 13.11, 13.16, 14.3, and 14.5.

 GEOLOGY/KARST:

No Concerns

 HERITAGE RESOURCES:

This unit was investigated per the third amended interagency Programmatic Agreement (PA) for historic properties. As 

specified by the PA, any potential adverse effect on historic properties (if any) was mitigated and portions of the Area of 

Potential Effect will be monitored by a qualified heritage specialist during and/or after actual ground disturbance.

 SCENERY:

The Scenic Integrity Objective (SIO) for this unit is Very Low . It is in Timber Production LUD and is considered Not Seen. 

There are no scenery resource concerns.

 RECREATION:

No Concerns; however, this unit is across a stream buffer or adjacent to (at one point) the Karta inventoried roadless area.

 SOILS/WETLANDS:

Based on review of digital elevation model, slopes range from 10% to about 40%; most slopes are less than 25%. Forested 

wetlands occur throughout the unit, based on GIS analysis. The soils and wetlands are suitable for partial suspension cable 

yarding or shovel yarding. All logging systems should follow BMPs 12.5, 13.2 and 13.9. Specifically, the shovel operator 

should avoid the small non-forested areas of the unit to prevent rutting. Slopes over 25% gradient may not be suitable for 

shovel yarding under some soil moisture conditions. Use care when approving shovel yarding on slopes over 25% gradient. 

Avoid track slippage and rutting.

The proposed temporary road will impact about 1/2 acre of forested wetland within the unit and about 1/4 acre of forested 

wetland outside of the unit. Wetland avoidance is not feasible because there are no existing roads adjacent to the wetland 

and the road is needed to access timber on a unit entirely covered by forested wetland. Provide adequate cross drainage, 

remove drainage structures, and close road after harvest (BMP 14.9).

 WILDLIFE:

Unit includes average snow deer winter range (entire unit), some of which is also deep snow marten habitat/deer winter 

range (western lobe). Wolf sign documented in unit. Legacy standard and guideline applies in this VCU; however there are 

no requirements for this unit because the original planned unit was less than 20 acres.
3012000

3012180

3012200

1.2R.1L

1.4R.3L

1.3R.2R

A1

A1

1.2R

1.5R.1R

1.5R

1.3R.3R

1.3R.2L

1.4 R

1.4R

1.2R 1 2. R.1R

1.3R.1L

1.5R

1.3R.1R

1.4R.2L

1.4R.1L

1.4R.1R.1R

1.4R.1R

1.4R.4L

1.4R.3L.1L

1.3R

1

A1.6R

2004

1966

1966

1967

34

33

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 034 Alternative 2 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Partial Cut

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

597.2

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt2.mxd 14 July 2012

RR

SR
3012000

3012180

3012200

1 2. R.1R

1.3R

1

A1.6R

1.4R.3L

1.3R.2R

A1

A1

1.2R

1.5R.1R

1.5R

1.3R.3R

1.3R.2L

1.4 R

1.4R

1.2R

1.3R.1L

1.2R.1L

1.5R

1.3R.1R

1.4R.2L

1.4R.1L

1.4R.1R.1R

1.4R.1R

1.4R.4L

1.4R.3L.1L

2004

1966

1966

1967

34

503

504

505

33

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 034 Alternative 3 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

597.2

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt3.mxd 14 July 2012

RR

SR
3012000

3012180

3012200

1 2. R.1R

1.3R

1

A1.6R

1.4R.3L

1.3R.2R

A1

A1

1.2R

1.5R.1R

1.5R

1.3R.3R

1.3R.2L

1.4 R

1.4R

1.2R

1.3R.1L

1.2R.1L

1.5R

1.3R.1R

1.4R.2L

1.4R.1L

1.4R.1R.1R

1.4R.1R

1.4R.4L

1.4R.3L.1L

2004

1966

1966

1967

34

503

504

505

33

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 034 Alternative 4 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

597.2

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt4.mxd 20 March 2012

RR

SR
3012000

3012180

3012200

1 2. R.1R

1.3R

1

A1.6R

1.4R.3L

1.3R.2R

A1

A1

1.2R

1.5R.1R

1.5R

1.3R.3R

1.3R.2L

1.4 R

1.4R

1.2R

1.3R.1L

1.2R.1L

1.5R

1.3R.1R

1.4R.2L

1.4R.1L

1.4R.1R.1R

1.4R.1R

1.4R.4L

1.4R.3L.1L

2004

1966

1966

1967

34

503

504

505

33

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 034 Alternative 5 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Sytematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

597.2

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt5.mxd 14 July 2012

RR

SR
Unit 35

Total Unit

Acres:

13.9 Prescription: 2, 3, 5 - Clearcut

4 - 33% Removal

VCU

Number:

597.

2

Harvest

System:

Cable

Net Harvest

Volume

(MBF):

2,3,5- 597

4 - 197 LUD:

Timber Production

 SILVICULTURE:

Existing Condition: Unit 35 has old-growth stand structure that transitions to more even-age appearing structure as you move 

up in elevation. Stem form defects were the dominant damage affecting volume, with crooks, sweeps, and splits being of 

concern. Windthrow risk is high. All past harvest areas adjacent to or near this unit are adequately restocked with trees at 

least 5 feet tall meeting the NFMA requirements for no longer being considered an opening. 

Silvicultural Objective/Desired Condition: The desired condition for this stand is a highly productive, healthy, windfirm stand 

grown for timber management that retains residual trees as needed to meet standards and guides or other objectives. 

Silvicultural Prescription: Even-age Management - Clearcut (Alternative 2, 3, and 5)

This stand is being recommended for harvest at this time because it is not expected to obtain the desired condition given the 

current growth trajectory. This stand is mature to over-mature with moderate stem decay and defect resulting in a situation 

where stand growth is being offset or exceeded by decay. Even-aged clear cutting is being prescribed to preclude or 

minimize the risk of windthrow post harvest, promote natural regeneration by opening up the canopy, and minimize defect 

and disease in the future stand to the maximum extent possible. No legacy is required because planned opening is less than 

20 acres.

Silvicultural Prescription: Uneven-age Management Group Selection (Alternative 4)

Harvest up to 33% of the planned setting acreage in groups of trees up to two acres in size. Group selections should be well 

distributed across the stand. Locate groups to address insect and disease issues or capitalize on existing advanced 

regeneration of desirable tree species where possible. Locate group selections to maintain wildlife travel ways and important 

habitat while maximizing the economics of this entry and also maintaining the feasibility of future harvest entries in the 

remaining old growth portions of the unit. Group selection will likely need to occur in strips on the downhill yarding portion of 

this unit to maintain operational feasibility. The uneven-aged group selection regeneration method is being prescribed for the 

unit or portions of the unit as a means to maintain large amounts of diverse structure to benefit wildlife over the long term.

 TIMBER/LOGGING:

This unit is planned for uphill and downhill cable yarding to landings on the existing NFS road 3012100.

 ENGINEERING/ROADS:

No proposed road construction.

 BOTANY:

No Concerns

 FISHERIES:

Streams are tributaries to Rio Beaver Creek. 

Stream#: 1 Class: II Flagging: B/W C- Type: HCV

Concerns: none

Buffer (RMA): Class II for HCV greater of 100 feet or the top of side-slope break. 

Alternatives: 2, 3, 4 and 5 Buffer (RAW): no review needed

Protection: Category A

 GEOLOGY/KARST:

No Concerns

Unit

Number 35 Alternatives 2, 3, 4, 5

Summary of Concerns, Responses, BMPs and Mitigation

 INVASIVE SPECIES:

No Concerns
Unit 35

 HERITAGE RESOURCES:

This unit was investigated per the third amended interagency Programmatic Agreement (PA) for historic properties. As 

specified by the PA, any potential adverse effect on historic properties (if any) was mitigated and portions of the Area of 

Potential Effect will be monitored by a qualified heritage specialist during and/or after actual ground disturbance.

 SCENERY:

The Scenic Integrity Objective (SIO) for this unit is Very Low . It is in Timber Production LUD and is considered Not Seen. 

There are no scenery resource concerns.

 RECREATION:

Harvest activities in this unit would be visible to recreationists using the existing road. Recreationists may also encounter 

logging traffic on the road. Harvest in this unit would be consistent with the applicable LUD (Timber Production) and would 

not change existing ROS settings. Harvest has occurred along the road system in the recent past (less than 30 years).

 SOILS/WETLANDS:

Slopes in the unit range from 47% to greater than 72%. Less than 1/8th an acre of steep slopes are located to the east of the 

3012100 road near the southeast boundary. Slopes average 47% west of the 3012100 road. All slopes in the unit are 

suitable for harvest. Forested wetlands border the western boundary of the unit. A minimum of partial suspension will meet 

soil and wetland resource concerns (BMPs 12.5, 13.5, and 13.9).

 WILDLIFE:

Unit includes average snow deer winter range (entire unit). Legacy standard and guideline applies in this VCU, however 

there are no requirements for this unit because it is less than 20 acres.

Alternative 4: Prescription is group selection with 33 percent basal area removal to maintain marten habitat and east-west 

connectivity bewteen two areas of past harvest.
3012140

3012100

3013100

3012140

1

3

2.8R.1L

1

2

9

5.1L.1R

5

8

7

2.8R

1.8R

6.1L

4

1. 4R.1R

5.1L

6

1.4R.1R

5

2.8R

1.4R.1R.1L

1.4R

2.1 L

1.4R.1R.1R

5.1L.1R.1L

1.7R

5.1L.1R

1992

1988

1993

1992

36

40

41

35

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 035 Alternative 2 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Partial Cut

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

597.2

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt2.mxd 14 July 2012

RR

SR
3012140

3012100

3013100

3012140

1

3

2.8R.1L

1

2

9

5.1L.1R

5

8

7

2.8R

1.8R

6.1L

4

1. 4R.1R

5.1L

6

1.4R.1R

5

2.8R

1.4R.1R.1L

1.4R

2.1 L

1.4R.1R.1R

5.1L.1R.1L

1.7R

5.1L.1R

1992

1988

1993

1992

36

40

41

35

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 035 Alternative 3 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

597.2

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt3.mxd 14 July 2012

RR

SR
3013100

3012140

3012100

5.1L.1R

1

3

2.8R.1L

1

2

9

5.1L.1R

5

8

7

2.8R

1.8R

6.1L

4

1. 4R.1R

5.1L

6

1.4R.1R

5

2.8R

1.4R.1R.1L

1.4R

2.1 L

1.4R.1R.1R

5.1L.1R.1L

1.7R

1992

1988

1992

1993

36

40

41

35

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 035 Alternative 4 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

597.2

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt4.mxd 20 March 2012

RR

SR
3013100

3012140

3012100

5.1L.1R

1

3

2.8R.1L

1

2

9

5.1L.1R

5

8

7

2.8R

1.8R

6.1L

4

1. 4R.1R

5.1L

6

1.4R.1R

5

2.8R

1.4R.1R.1L

1.4R

2.1 L

1.4R.1R.1R

5.1L.1R.1L

1.7R

1992

1988

1992

1993

36

40

41

35

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 035 Alternative 5 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Sytematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

597.2

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt5.mxd 14 July 2012

RR

SR
Unit 36

Total Unit

Acres:

2, 3 - 56.1

4 - 61.4

5 - 56.4

Prescription: 2, 3, 5 - Clearcut

4 - 50% Removal

VCU

Number:

597.

2

Harvest

System:

Cable, 

Helicopter

Net Harvest

Volume

(MBF):

2, 3 - 1,639

4 - 898

5 - 1,647

LUD:

Timber Production

 SILVICULTURE:

Existing Condition: Unit 36 has old-growth stand structure. Defect and damages are high for all species especially the 

western hemlock. In the western hemlock the incidence of mistletoe is light while stem/heart rot and defect are high to very 

high. The Alaska-cedar within the stand have a high incidence of cedar decline with numerous dead stems present. 

Windthrow risk is moderate. All past harvest areas adjacent to or near this unit are adequately restocked with trees at least 5 

feet tall meeting the NFMA requirements for no longer being considered an opening. 

Silvicultural Objective/Desired Condition: The desired condition for this stand is a highly productive, healthy, windfirm stand 

grown for timber management that retains residual trees as needed to meet standards and guides or other objectives.

Silvicultural Prescription: Even-aged Management - Clearcut (Alternative 2, 3, and 5)

This unit is being recommended for harvest at this time because it is not currently growing on a trajectory expected to meet 

the desired condition. This stand is over-mature with heavy stem decay and defect resulting in a situation where stand growth 

is being exceeded by decay. Even-aged clear cutting is being prescribed to preclude or minimize the risk of windthrow post 

harvest, promote natural regeneration by opening up the canopy, and minimize defect and disease in the future stand to the 

maximum extent possible. 

The legacy standard and guide applies in this VCU. This requires about 34 acres of productive old growth representative of 

the overall composition of the planned harvest area be maintained indefinitely. The required legacy structure is planned to 

coincide with areas of unsuitable soils, which greatly exceeds the acreage requirement. Narrow slivers between the 

unsuitable soils and riparian buffers in the southeast portion of the original unit were also added to the legacy total, which 

equals a total of 57 acres. Any adjustments to the planned unit during implementation must consider the planned acreage 

and location of legacy.

Silvicultural Prescription: Uneven-age Management Single Tree Selection (Alternative 4)

Maintain at least 50 percent of the setting pretreatment basal area, based on standing live tree total for the unit, uncut. 

Individual trees selected for harvest may occur in small groups but will generally be evenly distributed across the stand. Any 

small groups will usually be less than one acre but may occasionally go up to two acres in size where needed to address 

insect and disease issues or capitalize on existing advanced regeneration of desirable tree species. Trees selected for 

harvest will generally be well distributed and no large openings will occur as a result of the harvest. Review the marking 

guides and silvicultural prescription for more detailed information and direction for how to implement this prescription. The 

uneven-aged single tree selection regeneration method is being prescribed for this unit in Alternative 4 specifically to 

maintain intact diverse structure for wildlife needed at this time and place in the landscape to meet the objectives of this 

alternative. This system is not optimum for promoting timber production but is being prescribed in alternative 4 primarily to 

mitigate the overall effects of the project on wildlife. No legacy is required for units with uneven-age management.

 TIMBER/LOGGING:

Alternatives 2, 3: This unit is planned for a combination of helicopter and cable yarding. Cable settings are planned for uphill 

and downhill yarding to landings on the proposed NFS road 3012140. Helicopter settings are planned for yarding to 

proposed NFS road 3012140.

Alternatives 4, 5: This unit is planned for helicopter yarding to landings on existing NFS road 3012100.

 ENGINEERING/ROADS:

Unit is accessed by proposed NFS road 3012140 in Alternatives 2 and 3, totaling 3200 feet, as displayed on the unit card. 

See corresponding road card for detailed information on proposed NFS road construction.

 BOTANY:

No Concerns

Unit

Number 36 Alternatives 2, 3, 4, 5

Summary of Concerns, Responses, BMPs and Mitigation
Unit 36

 FISHERIES:

Streams are tributaries to Rio Beaver Creek. Stream A1 characteristics do not include project-specific, field-verified, 

information.

 

Stream#: 1 Class: II Flagging: B/W C- Type: HCV, MCS, MMS, PAB

Concerns: active erosion

Buffer (RMA): Class II for HCV and MCS greater of 100 feet or to the top of side-slope break. Class II greater of 100 feet 

(PAB) and 120 feet (MMS), flood plain, riparian vegetation or soils, or riparian associated wetland fens. 

Alternatives: 2, 3, 4 and 5 Buffer (RAW): no review needed

Protection: Category A 

Stream#: 4 Class: II , IV Flagging: B/W, G/W C- Type: HCO

Concerns: none

Buffer (RMA): Class II for HCO greater of 100 feet or to the top of the side-slope break. Class IV for HCO none. 

Alternatives: 2, 3, 4 and 5 Buffer (RAW): no review needed

Protection: Category A and C 

Stream#: 5 Class: II, IV Flagging: B/W, G/W C- Type: HCO

Concerns: none

Buffer (RMA): Class II for HCO greater of 100 feet or to the top of the side-slope break. Class IV for HCO none. 

Alternatives: 2, 3, 4 and 5 Buffer (RAW): no review needed

Protection: Category A and C 

Stream#: 5.1L Class: II, IV Flagging: B/W, G/W C- Type: HCO

Concerns: none

Buffer (RMA): Class II for HCO greater of 100 feet or to the top of the side-slope break. Class IV for HCO none.

Alternatives: 2, 3, 4 and 5 Buffer (RAW): no review needed

Protection: Category A and C 

Stream#: 5.1L.1R Class: II, IV Flagging: B/W, G/W C- Type: HCO

Concerns: none

Buffer (RMA): Class II for HCO greater of 100 feet or to the top of the side-slope break. Class IV for HCO none.

Alternatives: 2, 3, 4 and 5 Buffer (RAW): no review needed

Protection: Category A and C 

Stream#: 6 Class: II, IV Flagging: B/W, G/W C- Type: HCO

Concerns: none

Buffer (RMA): Class II for HCO greater of 100 feet or to the top of the side-slope break. Class IV for HCO none.

Alternatives: 2, 3, 4 and 5 Buffer (RAW): no review needed

Protection: Category A and C 

Stream#: 7 Class: II, IV Flagging: B/W, G/W C- Type: HCO

Concerns: blowdown

Buffer (RMA): Class II for HCO greater of 100 feet or to the top of the side-slope break. Class IV for HCO none.

Alternatives: 2, 3, 4 and 5 Buffer (RAW): no review needed

Protection: Category A and C 

Stream#: 8 Class: II, IV Flagging: B/W, G/W C- Type: HCO

Concerns: blowdown

Buffer (RMA): Class II for HCO greater of 100 feet or to the top of the side-slope break. Class IV for HCO none.

Alternatives: 2, 3, 4 and 5 Buffer (RAW): no review needed

Protection: Category A and C 

Stream#: 9 Class: II, IV Flagging: B/W, G/W C- Type: HCO

Concerns: none

Buffer (RMA): Class II for HCO greater of 100 feet or to the top of the side-slope break. Class IV for HCO none.

Alternatives: 2, 3, 4 and 5 Buffer (RAW): no review needed

Protection: Category A and C 

 INVASIVE SPECIES:

No Concerns
Unit 36

Stream#: 10 Class: II , IV Flagging: B/W, G/W C- Type: HCO

Concerns: none

Buffer (RMA): Class II for HCO greater of 100 feet or to the top of the side-slope break. Class IV for HCO none.

Alternatives: 2, 3, 4 and 5 Buffer (RAW): no review needed

Protection: Category A and C 

Stream#: 11 Class: II Flagging: B/W C- Type: PAS

Concerns: blowdown

Buffer (RMA): Class II for PAS greater of 100 feet, floodplain, riparian vegetation or soils, or riparian associated wetland fens.

Alternatives: 2, 3, 4 and 5 Buffer (RAW): no review needed

Protection: Category A 

Stream#: 12 Class: II Flagging: B/W C- Type: HCO

Concerns: none

Buffer (RMA): Class II for HCO greater of 100 feet or the side-slope break. 

Alternatives: 2, 3, 4 and 5 Buffer (RAW): no review needed

Protection: Category A 

Stream#: 13 Class: II, IV Flagging: B/W, G/W C- Type: HCO

Concerns: blowdown

Buffer (RMA): Class II for HCO greater of 100 feet or to the top of the side-slope break. Class IV for HCO none.

Alternatives: 2, 3, 4 and 5 Buffer (RAW): no review needed

Protection: Category A and C 

Stream#: 14 Class: II, IV Flagging: B/W, G/W C- Type: HCO

Concerns: blowdown

Buffer (RMA): Class II for HCO greater of 100 feet or to the top of the side-slope break. Class IV for HCO none.

Alternatives: 2, 3, 4 and 5 Buffer (RAW): no review needed.

Protection: Category A and C 

Stream#: A1 Class: III Flagging: O/W C- Type: HCM

Concerns: none known

Buffer (RMA): Class III for HCM to the top of the side-slope break. 

Alternatives: 2, 3, 4 and 5 Buffer (RAW): no review needed

Protection: Category B 

All other streams in unit: Class: IV Flagging: G/W C- Type: HC or MM

Buffer (RMA): none Buffer (RAW): no review needed

Protection: Category C

 GEOLOGY/KARST:

No Concerns

 HERITAGE RESOURCES:

This unit was investigated per the third amended interagency Programmatic Agreement (PA) for historic properties. As 

specified by the PA, any potential adverse effect on historic properties (if any) was mitigated and portions of the Area of 

Potential Effect will be monitored by a qualified heritage specialist during and/or after actual ground disturbance.

 SCENERY:

The Scenic Integrity Objective (SIO) for this unit is Very Low . It is in Timber Production LUD and is considered Not Seen. 

There are no scenery resource concerns.

 RECREATION:

No Concerns

 SOILS/WETLANDS:

Slopes are generally 50 to 60% with the exception of gentler slopes in the northern part of the unit above the proposed 

system road line at about 1,300 feet. Gentle slopes can also be found at the lowest elevations of the unit on the eastern 

boundary. About 51 acres of steep slopes and unstable soils were removed from the southern part of the unit with slopes up 

to 100%. Forested wetlands are dominant in the lower elevations of the eastern boundaries. Emerging subalpine muskegs 

and a moss muskeg were removed from the unit. A minimum of partial suspension would meet soil and wetland resource 

concerns (BMPs 12.5, 13.5, and 13.9).
Unit 36

 WILDLIFE:

Includes average snow deer winter range (northern 2/3 of unit). Legacy standard and guideline applies in this VCU; Legacy 

acres cover some average snow deer winter range. Possible goshawk detection during 2010 surveys. 

Alternative 4: Prescription is 50 percent basal area removal to maintain isolated patch of deer winter range. No Legacy acres 

required because adequate structure retained in unit under uneven-aged harvest prescription (i.e., no openings larger than 

20 acres).
3013100

3012100

3012140

3012145

3012140

5.1L.1R

3

2

1

1

14

A1

5.1L.1R

2.8R

5

8

12

7

9

1.8R

6.1L

13

5.1L.1R.1L

4

1 0

2.8 R.1L

11

5.1L

6

5

2.1L

1

1.7R

1992

1988

1992

1993

1966

1993

1993

36

41

35

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 036 Alternative 2 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Partial Cut

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

597.2

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt2.mxd 14 July 2012

RR

SR
3012145

3013100

3012100

3012140

3012140

1.7R

5.1L.1R

3

2

1

13

1

A1

5.1L.1R

2.8R

5

8

12

7

9

1.8R

6.1L

5.1L.1R.1L

14

4

1 0

2.8 R.1L

11

5.1L

6

5

2.1L

1

1988

1992

1992

1966

1993

1993

1993

36

41

507

35

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 036 Alternative 3 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

597.2

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt3.mxd 14 July 2012

RR

SR
3012100

3012140

3012145

3013100

5.1L.1R.1L

1.7R

5.1L.1R

A1

2

13

1

1

3

5.1L.1R

2.8R

5

8

12

7

9

1.8R

6.1L

1

14

4

1 0

2.8 R.1L

11

5.1L

6

5

2.1L

1988

1992

1992

1993

1993

1966

1993

36

41

507

35

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 036 Alternative 4 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

597.2

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt4.mxd 20 March 2012

RR

SR
3012100

3012140

3012145

3013100

5.1L.1R.1L

1.7R

5.1L.1R

A1

2

13

1

1

3

5.1L.1R

2.8R

5

8

12

7

9

1.8R

6.1L

1

14

4

1 0

2.8 R.1L

11

5.1L

6

5

2.1L

1988

1992

1992

1993

1993

1966

1993

36

41

507

35

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 036 Alternative 5 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Sytematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

597.2

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt5.mxd 14 July 2012

RR

SR
Unit 37

Total Unit

Acres:

2 - 39.5

3 - 79.5

4, 5 - 92.3

Prescription: 2, 3 - Clearcut

4, 5 - 50% 

Removal

VCU

Number:

597.

2

Harvest

System:

Cable, 

Helicopter

Net Harvest

Volume

(MBF):

2 - 1,374

3 - 2,768

4, 5 - 1,606

5 - 1,606

LUD:

Timber Production

 SILVICULTURE:

Existing condition: This unit has old-growth stand structure. The dominant damage/defect is stem form and stem rot. No 

mistletoe was recorded in the unit. The majority of the unit has irregular spacing between overstory trees with devil's club and 

salmonberry patches taking advantage of gaps in the canopy. Windthrow risk is low. All past harvest areas adjacent to or 

near this unit are adequately restocked with trees at least 5 feet tall meeting the NFMA requirements for no longer being 

considered an opening. 

Silvicultural Objective/Desired Condition: The desired condition for this stand is a highly productive, healthy, windfirm stand 

grown for timber management that retains residual trees as needed to meet standards and guides or other objectives.

Silvicultural Prescription: Even-age Management (Alternatives 2 and 3)

This stand is being recommended for harvest at this time because it is not expected to obtain the desired condition given the 

current growth trajectory. This stand is mature with moderate stem decay and defect resulting in a situation where stand 

growth is being offset by decay. Even-aged clear cutting is being prescribed to preclude or minimize the risk of windthrow 

post harvest, promote natural regeneration by opening up the canopy, and minimize defect and disease in the future stand to 

the maximum extent possible. 

The legacy standard and guide applies in this VCU. This requires that approximately 17 acres in Alternative 2 and 35 acres in 

Alternative 3 (consisting of productive old growth representative of the overall composition of the planned harvest area) be 

maintained indefinitely. The required legacy structure is planned to coincide with areas of unsuitable soils, RMAs, and 

longest yarding distances. Any adjustments to the planned unit during implementation must consider the planned acreage 

and location of legacy. Total mapped legacy equals about 17 acres in Alternative 2 and 36 acres in Alternative 3.

Silvicultural Prescription: Uneven-age Management Single Tree Selection (Alternative 4 and 5)

Maintain at least 50 percent of the setting pretreatment basal area, based on standing live tree total for the unit, uncut. 

Individual trees selected for harvest may occur in small groups but will generally be evenly distributed across the stand. Any 

small groups will usually be less than one acre but may occasionally go up to two acres in size where needed to address 

insect and disease issues or capitalize on existing advanced regeneration of desirable tree species. Trees selected for 

harvest will generally be well distributed and no large openings will occur as a result of the harvest. Review the marking 

guides and silvicultural prescription for more detailed information and direction for how to implement this prescription. The 

uneven-aged single tree selection regeneration method is being prescribed for this unit in Alternative 4 specifically to 

maintain intact diverse structure for wildlife needed at this time and place in the landscape to meet the objectives of this 

alternative. This system is not optimum for promoting timber production but is being prescribed in alternative 4 primarily to 

mitigate the overall effects of the project on wildlife. The uneven-aged single tree selection regeneration method is being 

prescribed for this unit in Alternative 5 specifically to maintain significant vegetative cover post-harvest in this watershed at 

this time in order to reduce the potential for erosion and other possible cumulative effects of additional timber harvest. This 

system is not optimum for promoting timber production but is being prescribed primarily to mitigate the overall effects of the 

project on watersheds, fish, and wildlife. No legacy is required for this unit in Alternatives 4 and 5 since adequate structure is 

maintained using uneven-age management.

 TIMBER/LOGGING:

Alternatives 2, 3: This unit is planned for a combination of cable and helicopter yarding. Cable settings are planned for uphill 

and downhill yarding to landings on the proposed temporary road. Helicopter yarding is planned to landings on existing NFS 

road 3012180 and the proposed temporary road.

Alternatives 4, 5: This unit is planned for helicopter yarding to landings on the existing NFS road 3012180.

 ENGINEERING/ROADS:

Unit is accessed by a proposed temporary road in Alternatives 2 and 3, totaling 1100 feet, as displayed on the unit card.

Unit

Number 37 Alternatives 2, 3, 4, 5

Summary of Concerns, Responses, BMPs and Mitigation
Unit 37

 BOTANY:

No Concerns

 FISHERIES:

Streams are tributaries to Rio Beaver Creek. 

Stream#: 1 Class: III, IV Flagging: O/W, G/W C- Type: MMS, HCM, HCL

Concerns: blowdown

Buffer (RMA): Class III for MMS greater of 120 feet, flood plain, riparian vegetation or soils, or riparian associated wetland 

fens. Class III for HCM to the side-slope break. Class IV for HCL none. 

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed

Protection: Category B and C 

All other streams in unit: Class: IV Flagging: G/W C- Type: HC or MM

Buffer (RMA): none Buffer (RAW): none

Protection: Category C 

Temporary roads for Unit 37: Alternatives 2 and 3 -- Four Class IV stream crossings. The temporary roads have not been 

field verified and will be surveyed before implementation. Crossings structures and locations will be approved by USFS, in 

consultation with fisheries biologist or hydrologist, prior to construction (BMP 14.17). During construction of temporary roads 

implement BMPs 12.17, 13.10, 13.11, 13.16, 14.3, and 14.5.

 GEOLOGY/KARST:

No Concerns

 HERITAGE RESOURCES:

This unit was investigated per the third amended interagency Programmatic Agreement (PA) for historic properties. As 

specified by the PA, any potential adverse effect on historic properties (if any) was mitigated and portions of the Area of 

Potential Effect will be monitored by a qualified heritage specialist during and/or after actual ground disturbance.

 SCENERY:

The Scenic Integrity Objective (SIO) for this unit is Very Low . It is in Timber Production LUD and is considered Not Seen. 

There are no scenery resource concerns.

 RECREATION:

No Concerns

 SOILS/WETLANDS:

Slopes average 25 to 70%. About 17 acres were excluded from the unit unsuitable soils, very high landslide potential, active 

and historic landslides, colluvial activity, avalanche chutes, steep slopes, and unstable drainage. All slopes greater than 

72%, about 2 acres, are located in the excluded area. Approximately 40 acres on the southern portion of the unit are only 

suitable for full suspension and partial harvest. Sub-alpine muskegs are located on the southern fringe of the unit.

Alternative 2:

Full suspension and partial harvest is required in about 2 acres of the unit. In the remainder of the unit, a minimum of partial 

suspension will meet soil and wetland resource concerns (BMPs 12.5, 13.5, and 13.9).

Alternatives 2 and 3:

The proposed temporary road does not traverse any wetlands.

Alternative 3, 4, and 5:

Full suspension and partial harvest is required in about 27 acres of the unit. In the remainder of the unit, a minimum of partial 

suspension will meet soil and wetland resource concerns (BMPs 12.5, 13.5, and 13.9).

Alternatives 2 and 3: Logging prescription is under evaluation and may be revised based on recommendation for partial 

retention due to soil concerns.

 WILDLIFE:

 INVASIVE SPECIES:

No Concerns
Unit 37

Includes average snow deer winter range (all except northern lobe of unit). Legacy standard and guideline applies in this 

VCU; Legacy acres cover some average snow deer winter range. Possible goshawk detection during 2010 surveys. 

Alternatives 4 and 5: Helicopter yarding and 50 percent basal area removal to minimize effects to wildlife associated with 

roads and maintain deer winter range. No Legacy acres required because adequate structure retained in unit under unevenaged harvest prescription (i.e., no openings larger than 20 acres).
3012300

3012180

1

1.25L

1.20R

1.23R

1.24L

1.10L

1.11L

1.5R

1.6L

1.22R

1.12L

1.21R

1

1.4R

1.2R

1.1R

1.3R

1966

1993

1966 37

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 037 Alternative 2 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Partial Cut

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

597.2

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt2.mxd 14 July 2012

RR

SR
3012300

3012180

1

1.25L

1.20R

1.23R

1.24L

1.10L

1.11L

1.5R

1.6L

1.22R

1.12L

1.21R

1

1.4R

1.2R

1.1R

1.3R

1966

1993

1966 37

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 037 Alternative 3 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

597.2

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt3.mxd 14 July 2012

RR

SR
3012300

3012180

1

1.25L

1.20R

1.23R

1.24L

1.10L

1.11L

1.5R

1.6L

1.22R

1.12L

1.21R

1

1.4R

1.2R

1.1R

1.3R

1966

1993

1966 37

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 037 Alternative 4 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

597.2

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt4.mxd 20 March 2012

RR

SR
3012300

3012180

1

1.25L

1.20R

1.23R

1.24L

1.10L

1.11L

1.5R

1.6L

1.22R

1.12L

1.21R

1

1.4R

1.2R

1.1R

1.3R

1966

1993

1966 37

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 037 Alternative 5 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Sytematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

597.2

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt5.mxd 14 July 2012

RR

SR
Unit 38

Total Unit

Acres:

48.1 Prescription: 2, 3, 5 - Clearcut

4 - 50% Removal

VCU

Number:

597.

2

Harvest

System:

Helicopter

Net Harvest

Volume

(MBF):

2, 3, 5 - 947

4 - 473 LUD:

Timber Production

 SILVICULTURE:

Existing Condition: Unit 38 has old growth structure with characteristics typical of a high elevation stand. Along the western 

and northwestern boundary, even-age stand structure is apparent. Average defect for the entire unit is moderate. Windthrow 

risk is high. All past harvest areas adjacent to or near this unit are adequately restocked with trees at least 5 feet tall meeting 

the NFMA requirements for no longer being considered an opening.

Silvicultural Objective/Desired Condition: The desired condition for this stand is a highly productive, healthy, windfirm stand 

grown for timber management that retains residual trees as needed to meet standards and guides or other objectives. 

Silvicultural Prescription: Even-age Management (Alternatives 2, 3, and 5)

This stand is being recommended for harvest at this time because it is not expected to obtain the desired condition given the 

current growth trajectory. This stand is mature with moderate stem decay and defect resulting in a situation where stand 

growth is being offset by decay. Even-aged clear cutting is being prescribed to preclude or minimize the risk of windthrow 

post harvest, promote natural regeneration by opening up the canopy, and minimize defect and disease in the future stand to 

the maximum extent possible. 

A Tongass Wide Young Growth Study site (POW Rio Beaver Experiment #4) is along the southwestern boundary. Protection 

of this site is required. Contact the Forestry Sciences Lab in Juneau for additional information. 

The legacy standard and guide applies in this VCU. This requires that approximately 23 acres of productive old growth 

representative of the overall composition of the planned harvest area be maintained indefinitely. The required legacy 

structure is planned to coincide with areas of unsuitable soils and RMA buffers. Mapped legacy totals about 26 acres. Any 

adjustments to the planned unit during implementation must consider the planned acreage and location of legacy. 

Silvicultural Prescription: Uneven-age Management Single Tree Selection (Alternative 4)

Maintain at least 50 percent of the setting pretreatment basal area, based on standing live tree total for the unit, uncut. 

Individual trees selected for harvest may occur in small groups but will generally be evenly distributed across the stand. Any 

small groups will usually be less than one acre but may occasionally go up to two acres in size where needed to address 

insect and disease issues or capitalize on existing advanced regeneration of desirable tree species. Trees selected for 

harvest will generally be well distributed and no large openings will occur as a result of the harvest. Review the marking 

guides and silvicultural prescription for more detailed information and direction for how to implement this prescription. The 

uneven-aged single tree selection regeneration method is being prescribed for this unit in Alternative 4 specifically to 

maintain intact diverse structure for wildlife needed at this time and place in the landscape to meet the objectives of this 

alternative. This system is not optimum for promoting timber production but is being prescribed in alternative 4 primarily to 

mitigate the overall effects of the project on wildlife. A Tongass Wide Young Growth Study site (POW Rio Beaver Experiment 

#4) is along the southwestern boundary. Protection of this site is required. Contact the Forestry Sciences Lab in Juneau for 

additional information. 

No legacy is required for this unit in Alternative 4 since adequate structure is maintained using uneven-age management.

 TIMBER/LOGGING:

This unit is planned for helicopter yarding to landings on existing NFS road 3012000.

 ENGINEERING/ROADS:

Unit is accessed by reconstruction of NFS roads 3012000, totaling 7,100 feet. See corresponding road card for detailed 

information.

 BOTANY:

No Concerns

Unit

Number 38 Alternatives 2, 3, 4, 5

Summary of Concerns, Responses, BMPs and Mitigation

 INVASIVE SPECIES:
Unit 38

 FISHERIES:

Streams are tributaries to Rio Beaver Creek. Streams A1, A2, A3, A4, and A1.8L characteristics do not include projectspecific, field-verified, information.

Stream#: 1 Class: I Flagging: B/W C- Type: MCS, HCL 

Concerns: none

Buffer (RMA): Class I for MCS and HCL greater of 100 feet or to the top of side-slope break.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed

Protection: Category A 

Stream#: 1.1L Class: II, IV Flagging: B/W, G/W C- Type: HCO

Concerns: none

Buffer (RMA): Class II for HCO greater of 100 feet or to the top of side-slope break. Class IV HCO none.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed

Protection: Category A and C 

Stream#: 1.1L.1L Class: II, IV Flagging: B/W, G/W C- Type: HCO

Concerns: none

Buffer (RMA): Class II for HCO greater of 100 feet or to the top of side-slope break. Class IV HCO none.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed

Protection: Category A and C 

Stream#: 1.2L Class: II, III Flagging: B/W, O/W C- Type: HCL, HCD

Concerns: none

Buffer (RMA): Class II for HCL greater of 100 feet or to the top of side-slope break.. Class III for HCD to the top of side-slope 

break. 

Alternatives: 2, 3, 4, and 5 Buffer (RAW): Will be identified by IDT during layout.

Protection: Category A and B 

Stream#: 1.4L Class: II , IV Flagging: B/W, G/W C- Type: HCO

Concerns: blowdown

Buffer (RMA): Class II for HCO greater of 100 feet or to the top of side-slope break. Class IV HCO none. 

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed

Protection: Category A and C 

Stream#: 1.5L Class: II , IV 	 Flagging: B/W, G/W C- Type: HCO

Concerns: none

Buffer (RMA): Class II for HCO greater of 100 feet or to the top of side-slope break. Class IV HCO none.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed

Protection: Category A and C 

Stream#: 1.6L Class: II, III, IV Flagging: B/W, O/W, G/W C- Type: HCL, HCM, HCL

Concerns: active erosion

Buffer (RMA): Class II for HCL greater of 100 feet or to the top of the side-slope break. Class III for HCM to the top of sideslope break. Class IV HCL none.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed

Protection: Category A, B and C 

Stream#: 1.7L Class: II, III Flagging: B/W, O/W C- Type: HCL, HCM, HCL

Concerns: blowdown and active erosion

Buffer (RMA): Class II for HCL greater of 100 feet or to the top of side-slope break. Class III for HCM and HCL to the top of 

side-slope break. 

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed 

Protection: Category A and B .

Stream#: A1.8L Class: III Flagging: O/W C- Type: HCM

Concerns: none known

Buffer (RMA): Class III for HCM to the top of the side-slope break.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed

Mitigation/Protection: Category B 

 INVASIVE SPECIES:

No Concerns
Unit 38

Stream#: A1 Class: III Flagging: O/W C- Type: HCD

Concerns: none known

Buffer (RMA): Class III for HCD to the top of the side-slope break.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed

Mitigation/Protection: Category B 

Stream#: A2 Class: III Flagging: O/W C- Type: HCD

Concerns: none known

Buffer (RMA): Class III for HCD to the top of the side-slope break.

Buffer Alternatives: 2, 3, 4, and 5 	 Buffer (RAW): no review needed

Protection: Category B 

Stream#: A3 Class: III Flagging: O/W C- Type: HCD

Concerns: none known

Buffer (RMA): Class III for HCD to the top of the side-slope break.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed

Protection: Category B 

Stream#: A4 Class: III Flagging: O/W C- Type: HCD

Concerns: none known

Buffer (RMA): Class III for HCD to the top of the side-slope break. 

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed

Protection: Category A, B and C 

All other streams in unit: Class: IV Flagging: G/W C- Type: HC or MM

Buffer (RMA): none Buffer (RAW): no review needed

Protection: Category C

 GEOLOGY/KARST:

No Concerns

 HERITAGE RESOURCES:

This unit was investigated per the third amended interagency Programmatic Agreement (PA) for historic properties. As 

specified by the PA, any potential adverse effect on historic properties (if any) was mitigated and portions of the Area of 

Potential Effect will be monitored by a qualified heritage specialist during and/or after actual ground disturbance.

 SCENERY:

The Scenic Integrity Objective (SIO) for this unit is Very Low . It is in Timber Production LUD and is considered Not Seen. 

There are no scenery resource concerns.

 RECREATION:

No Concerns

 SOILS/WETLANDS:

Slopes range from 50 to 70%. Approximately 56 acres were excluded from the original reconnaissance area (some of this 

area is in inventoried roadless area and was dropped for that reason also) due to high landslide potential, active and historic 

landslides, colluvial activity, about 16 acres of over-steepened slopes, and unstable drainages. A 1/2 acre debris avalanche 

is located mostly within the unit, near the center of the unit. No wetlands have been identified in the unit. Full suspension with 

partial harvest is required in about 23 acres of modified unit. In the remainder of the unit, a minimum of partial suspension 

would meet soil and wetland resource concerns (BMPs 12.5, 13.5, and 13.9).

Alternatives 2, 3, and 5: Logging prescription is under evaluation and may be revised based on recommendation for partial 

retention due to soil concerns.

 WILDLIFE:

Includes average snow deer winter range (entire unit). Legacy standard and guideline applies in this VCU; Legacy acres 

cover some average snow deer winter range. 

Alternative 4: Prescription is 50 percent basal area removal to maintain habitat values. No Legacy acres required because 

adequate structure retained in unit under uneven-aged harvest prescription (i.e., no openings larger than 20 acres).
3012300

3012000

3012000

1.1L.1L

1.7L

A1.2R

1

1

1.5L

1.2L

1.1L

1.6L

A1.1R.1L

1.6L.1L

1.4L

A1

A3

A2

A1.3R

1

1.5L.1L

A1.8L

A1.1R

A4

1966

38

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 038 Alternative 2 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Partial Cut

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

597.2

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt2.mxd 14 July 2012

RR

SR
3012300

3012000

1.1L.1L

1.7L

A1.2R

1

1

1.5L

1.2L

1.1L

1.6L

A1.1R.1L

1.6L.1L

1.4L

A1

A3

A2

A1.3R

1

1.5L.1L

A1.8L

A1.1R

A4

1966

38

512

514

515

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 038 Alternative 3 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

597.2

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt3.mxd 14 July 2012

RR

SR
3012000

3012300

3012000

1.1L.1L

1.7L

A1.2R

1

1

1.5L

1.2L

1.1L

1.6L

A1.1R.1L

1.6L.1L

1.4L

A1

A3

A2

A1.3R

1

1.5L.1L

A1.8L

A1.1R

A4

1966

38

512

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 038 Alternative 4 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

597.2

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt4.mxd 20 March 2012

RR

SR
3012000

3012300

3012000

1.1L.1L

1.7L

A1.2R

1

1

1.5L

1.2L

1.1L

1.6L

A1.1R.1L

1.6L.1L

1.4L

A1

A3

A2

A1.3R

1

1.5L.1L

A1.8L

A1.1R

A4

1966

38

512

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 038 Alternative 5 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Sytematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

597.2

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt5.mxd 14 July 2012

RR

SR
Unit 40

Total Unit

Acres:

2, 3, 5 - 38.9

4 - 44.5

Prescription: 2, 3, 5 - Clearcut

4 - 25% Removal

VCU

Number:

597.

2

Harvest

System:

Helicopter

Net Harvest

Volume

(MBF):

2, 3, 5 - 830

4 - 238 LUD:

Modified Landscape, 

Timber Production

 SILVICULTURE:

Existing Condition: Unit 40 is characterized by over-mature high defect old growth timber. In the western hemlock mistletoe is 

very light, while stem decay is moderate. In the Alaska-cedar, decline is high. Defect for all species is moderate to high. 

Windthrow risk is moderate. All past harvest areas adjacent to or near this unit are adequately restocked with trees at least 5 

feet tall and meet NFMA requirements for no longer being considered an opening.

Silvicultural Objective/Desired Condition: The desired condition for this stand is a highly productive, healthy, windfirm stand 

grown for timber management that retains residual trees as needed to meet standards and guides or other objectives. 

Silvicultural Prescription: Even-age Management (Alternatives 2, 3, and 5)

This stand is being recommended for harvest at this time because it is not expected to obtain the desired condition given the 

current growth trajectory. This stand is over-mature with heavy stem decay and defect resulting in a situation where stand 

growth is being offset or exceeded by decay. Even-aged clear cutting is being prescribed to preclude or minimize the risk of 

windthrow post harvest, promote natural regeneration by opening up the canopy, improve site productivity through increased 

soil temperature and minimize defect and disease in the future stand to the maximum extent possible. 

The legacy standard and guide applies in this VCU. This requires that approximately 17 acres of productive old growth 

representative of the overall composition of the planned harvest area be maintained indefinitely. The required legacy 

structure is planned to coincide with areas of unsuitable soils and RMAs plus an additional block to divide the opening into 

two smaller openings. Mapped legacy totals about 19 acres. Any adjustments to the planned unit during implementation 

must consider the planned acreage of legacy. 

Silvicultural Prescription: Uneven-age Management Single Tree Selection (Alternative 4)

Maintain at least 75 percent of the setting pretreatment basal area, based on standing live tree total for the unit, uncut. 

Individual trees selected for harvest may occur in small groups but will generally be evenly distributed across the stand. Any 

small groups will usually be less than one acre but may occasionally go up to two acres in size where needed to address 

insect and disease issues or capitalize on existing advanced regeneration of desirable tree species. Trees selected for 

harvest will generally be well distributed and no large openings will occur as a result of the harvest. Review the marking 

guides and silvicultural prescription for more detailed information and direction for how to implement this prescription. The 

uneven-aged single tree selection regeneration method is being prescribed for this unit in Alternative 4 specifically to 

maintain intact diverse structure for wildlife needed at this time and place in the landscape to meet the objectives of this 

alternative. This system is not optimum for promoting timber production but is being prescribed in alternative 4 primarily to 

mitigate the overall effects of the project on wildlife.

No Legacy acres required for uneven-aged management because adequate structure retained in unit under uneven-aged 

harvest prescription (i.e., no openings larger than 20 acres).

 TIMBER/LOGGING:

This unit is planned for helicopter yarding. Helicopter settings are planned for yarding to the existing NFS road 3013100.

 ENGINEERING/ROADS:

No proposed road construction.

 BOTANY:

No Concerns

 FISHERIES:

Unit

Number 40 Alternatives 2, 3, 4, 5

Summary of Concerns, Responses, BMPs and Mitigation

 INVASIVE SPECIES:

No Concerns
Unit 40

Streams are tributaries to Goose Creek. Streams A1 and A2 characteristics do not include project-specific, field-verified, 

information.

Stream#: 1.4R Class: III, IV Flagging: O/W, G/W C- Type: HCD, HCO

Concerns: none

Buffer (RMA): Class III for HCD and HCO to the top of the side-slope break. Class IV for HCO none.

Alternatives: 2, 3, 4 and 5 Buffer (RAW): no review needed

Protection: Category B and C 

Stream#: 1.4R.1R Class: III, IV Flagging: O/W, G/W C- Type: HCO

Concerns: none 

Buffer (RMA): Class III for HCO to the top of the side-slope break. Class IV for HCO none.

Alternatives: 2, 3, and 5 Buffer (RAW): Will be identified by IDT during layout.

Alternative: 4 Buffer (RAW): no review needed

Protection: Category B and C 

Stream#: 1.4R.1R.1R 	 Class: III, IV Flagging: O/W, G/W C- Type: HCD, HCO

Concerns: none 

Buffer (RMA): Class III for HCD to the top of the side-slope break. Class IV for HCO none.

Alternatives: 2, 3, 4 and 5 Buffer (RAW): no review needed

Protection: Category B and C 

Stream#: A1 Class: III, IV Flagging: O/W, G/W C- Type: HCD, HCO

Concerns: none known

Buffer (RMA): Class III for HCD to the top of the side-slope break. Class IV for HCO none.

Alternatives: 2, 3, 4 and 5 Buffer (RAW): no review needed.

Protection: Category B and C 

Stream#: A2 Class: III Flagging: O/W C- Type: HCL, HCM

Concerns: none known

Buffer (RMA): Class III for HCL and HCM to the top of the side-slope break. Class IV for HCO none.

Alternatives: 2, 3, 4 and 5 Buffer (RAW): no review needed

Protection: Category B and C 

All other streams in unit: Class: IV Flagging: G/W C- Type: HC or MM

Buffer (RMA): none known Buffer (RAW): no review needed

Protection: Category C

 GEOLOGY/KARST:

No Concerns

 HERITAGE RESOURCES:

This unit was investigated per the third amended interagency Programmatic Agreement (PA) for historic properties. As 

specified by the PA, any potential adverse effect on historic properties (if any) was mitigated and portions of the Area of 

Potential Effect will be monitored by a qualified heritage specialist during and/or after actual ground disturbance.

 SCENERY:

The Scenic Integrity Objective (SIO) for this unit is Low. It is in Modified Landscape LUD, due to its potential viibility from the 

Control Lake-Thorne Bay highway and is in Middleground. However, the majority of the unit is 1 mile or more from the 

highway. And the unit generally runs perpendicular to the highway. Therefore, clearcutting is permissable.

 RECREATION:

No Concerns

 SOILS/WETLANDS:

Slopes range from 40 to 75%. Based on GIS analysis, most of the unit is mapped as forested wetland, though only an area at 

the northern end of the unit was noted as wetland during field surveys. Approximately 5 acres of slopes greater than 72% are 

omitted from harvest due to very high landslide potential, MMI4 soils, historic landslides, and very steep slopes. In the 

remainder of the unit, a minimum of partial suspension will meet soil and wetland resource concerns (BMPs 12.5, 13.5, and 

13.9).

 WILDLIFE:
3013000

3012120

3012100

3013100

2.6R

2.8R

2.3R

2.5R

2.8R.1L

1.4R.1R

2.7R

2.8R

1.4R.1R.1L

1.4R.1R.1R

1.4R.1R

1.4R

A1

A2

2.4R

2005

1989

1966

1988

1992

2007

40

40

41

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 040 Alternative 2 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Partial Cut

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

597.2

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt2.mxd 14 July 2012

RR

SR
3013000

3012120

3012100

3013100

2.6R

2.8R

2.3R

2.5R

2.8R.1L

1.4R.1R

2.7R

2.8R

1.4R.1R.1L

1.4R.1R.1R

1.4R.1R

1.4R

A1

A2

2.4R

2005

1989

1966

1988

1992

2007

40

40

41

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 040 Alternative 3 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

597.2

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt3.mxd 14 July 2012

RR

SR
3013000

3012120

3012100

3013100

2.6R

2.8R

2.3R

2.5R

2.8R.1L

1.4R.1R

2.7R

2.8R

1.4R.1R.1L

1.4R.1R.1R

1.4R.1R

1.4R

A1

A2

2.4R

2005

1989

1966

1988

1992

2007

40

40

41

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 040 Alternative 4 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

597.2

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt4.mxd 20 March 2012

RR

SR
3013000

3012120

3012100

3013100

2.6R

2.8R

2.3R

2.5R

2.8R.1L

1.4R.1R

2.7R

2.8R

1.4R.1R.1L

1.4R.1R.1R

1.4R.1R

1.4R

A1

A2

2.4R

2005

1989

1966

1988

1992

2007

40

40

41

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 040 Alternative 5 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Sytematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

597.2

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt5.mxd 14 July 2012

RR

SR
Unit 41

Total Unit

Acres:

2, 3, 5 - 17.5

4 - 23.9

Prescription: 2, 3, 5 - Clearcut

4 - 25% Removal

VCU

Number:

597.

2

Harvest

System:

Helicopter

Net Harvest

Volume

(MBF):

2, 3, 5 - 404

4 - 138 LUD:

Modified Landscape, 

Timber Production

 SILVICULTURE:

Existing condition: Unit 41 is old growth timber with average defect. The unit has experienced very heavy Alaska-cedar 

decline in the past. In the western hemlock the incidence of mistletoe is light to very light, while stem rot is moderate. Defect 

for the stand is moderate to high for all species. Windthrow risk is moderate. A previous harvest area is located to the east. It 

is adequately restocked with trees at least 5 feet tall and meets NFMA requirements for no longer being considered an 

opening.

Silvicultural Objective/Desired Condition: The desired condition for this stand is a highly productive, healthy, windfirm stand 

grown for timber management that retains residual trees as needed to meet standards and guides or other objectives. 

Silvicultural Prescription: Even-age Management (Alternatives 2, 3, and 5)

This stand is being recommended for harvest at this time because it is not expected to obtain the desired condition given the 

current growth trajectory. This stand is over-mature with moderate stem decay and defect resulting in a situation where stand 

growth is being offset or exceeded by decay. Even-aged clear cutting is being prescribed to preclude or minimize the risk of 

windthrow post harvest, promote natural regeneration by opening up the canopy, and minimize defect and disease in the 

future stand to the maximum extent possible. 

The legacy standard and guide applies in this VCU. This requires that 8 acres of productive old growth representative of the 

overall composition of the planned harvest area be maintained indefinitely. The required legacy structure is planned at the 

northern and southern ends of the unit to block up POG along riparian corridors and provide for a RAW buffer at the north. 

Total mapped legacy equals about 9 acres. Any adjustments to the planned unit during implementation must consider the 

planned acreage of legacy. 

Silvicultural Prescription: Uneven-age Management Single Tree Selection (Alternative 4)

Maintain at least 75 percent of the setting pretreatment basal area, based on standing live tree total for the unit, uncut. 

Individual trees selected for harvest may occur in small groups but will generally be evenly distributed across the stand. Any 

small groups will usually be less than one acre but may occasionally go up to two acres in size where needed to address 

insect and disease issues or capitalize on existing advanced regeneration of desirable tree species. Trees selected for 

harvest will generally be well distributed and no large openings will occur as a result of the harvest. Review the marking 

guides and silvicultural prescription for more detailed information and direction for how to implement this prescription. The 

uneven-aged single tree selection regeneration method is being prescribed for this unit in Alternative 4 specifically to 

maintain intact diverse structure for wildlife needed at this time and place in the landscape to meet the objectives of this 

alternative. This system is not optimum for promoting timber production but is being prescribed in Alternative 4 primarily to 

mitigate the overall effects of the project on wildlife.

No Legacy acres required for uneven-aged management because adequate structure retained in unit under uneven-aged 

harvest prescription (i.e., no openings larger than 20 acres).

 TIMBER/LOGGING:

This unit is planned for helicopter yarding. Helicopter settings are planned for yarding to the existing NFS road 3013100.

 ENGINEERING/ROADS:

No proposed road construction.

 BOTANY:

No Concerns

 FISHERIES:

Unit

Number 41 Alternatives 2, 3, 4, 5

Summary of Concerns, Responses, BMPs and Mitigation

 INVASIVE SPECIES:

No Concerns
Unit 41

Streams are tributaries to Goose Creek. 

Stream#: 2.8R Class: III, IV Flagging: O/W, G/W C- Type: HCM, HCD, HCO

Concerns: active erosion and blowdown

Buffer (RMA): Class III for HCM and HCD to the top of the side-slope break. Class IV HCO none.

Alternatives: 2, 3, 4 and 5 Buffer (RAW): no review needed

Protection: Category B and C 

Stream#: 2.8R.1L Class: III, IV Flagging: O/W, G/W C- Type: HCO

Concerns: none

Buffer (RMA): Class III for HCO to the top of the side-slope break. Class IV for HCO none.

Alternatives: 2, 3, and 5 Buffer (RAW): Will be identified by IDT during layout.

Alternative: 4 Buffer (RAW): no review needed

Protection: Category B and C 

Stream#: 1.8R Class: III, IV Flagging: O/W, G/W C- Type: HCM, HCL

Concerns: none

Buffer (RMA): Class III for HCM to the top of the side-slope break. Class IV for HCL none.

Alternatives: 2, 3, 4 and 5 Buffer (RAW): no review needed

Protection: Category B and C

Stream#: 1.7R Class: III, IV Flagging: O/W, G/W C- Type: HCM, HCO

Concerns: none

Buffer (RMA): Class III for HCM to the top of the side-slope break. Class IV for HCO none.

Alternatives: 2, 3, 4 and 5 Buffer (RAW): no review needed

Protection: Category B and C

 GEOLOGY/KARST:

No Concerns

 HERITAGE RESOURCES:

This unit was investigated per the third amended interagency Programmatic Agreement (PA) for historic properties. As 

specified by the PA, any potential adverse effect on historic properties (if any) was mitigated and portions of the Area of 

Potential Effect will be monitored by a qualified heritage specialist during and/or after actual ground disturbance.

 SCENERY:

The Scenic Integrity Objective (SIO) for this unit is Low. It is in Modified Landscape, due to its potential viibility from the 

Control Lake-Thorne Bay highway and is in Middleground. However, the majority of the unit is 1-1/2 mile or more from the 

highway and the unit generally runs perpendicular to the highway. Therefore, clearcutting is permissable.

 RECREATION:

No Concerns

 SOILS/WETLANDS:

Slopes range from 40 to 65%. A minimum of partial suspension will meet soil and wetland resource concerns (BMPs 12.5, 

13.5, and 13.9).

Forested wetlands cover the entire unit in all alternatives (BMP 12.5).

 WILDLIFE:

Includes average snow deer winter range (entire unit). Legacy standard and guideline applies in this VCU; Legacy acres 

cover some average snow deer winter range and deep snow marten habitat/deer winter range. 

Alternative 4: Prescription is 25% basal area removal to maintain habitat values. No Legacy acres required because 

adequate structure retained in unit under uneven-aged harvest prescription (i.e., no openings larger than 20 acres).
3012100

3013100

1.8R

1.4R.1R

2.7R

2.8R

2.8R

1.4R.1R.1L

1.4R.1R.1R

1.7R

1.4R.1R

1.4R

2.8R.1L

1

2005

1988

1992

1992

1993

35

40

41

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 041 Alternative 2 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Partial Cut

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

597.2

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt2.mxd 14 July 2012

RR

SR
3012100

3013100

1.8R

1.4R.1R

2.7R

2.8R

2.8R

1.4R.1R.1L

1.4R.1R.1R

1.7R

1.4R.1R

1.4R

2.8R.1L

1

2005

1988

1992

1992

1993

35

40

41

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 041 Alternative 3 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

597.2

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt3.mxd 14 July 2012

RR

SR
3012100

3013100

1.8R

1.4R.1R

2.7R

2.8R

2.8R

1.4R.1R.1L

1.4R.1R.1R

1.7R

1.4R.1R

1.4R

2.8R.1L

1

2005

1988

1992

1992

1993

35

40

41

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 041 Alternative 4 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

597.2

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt4.mxd 20 March 2012

RR

SR
3012100

3013100

1.8R

1.4R.1R

2.7R

2.8R

2.8R

1.4R.1R.1L

1.4R.1R.1R

1.7R

1.4R.1R

1.4R

2.8R.1L

1

2005

1988

1992

1992

1993

35

40

41

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 041 Alternative 5 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Sytematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

597.2

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt5.mxd 14 July 2012

RR

SR
Unit 42

Total Unit

Acres:

45.5 Prescription: Clearcut

VCU

Number:

597.

2

Harvest

System:

Cable, 

Shovel, 

Net Harvest

Volume

(MBF):

1,210

LUD:

Timber Production

 SILVICULTURE:

Existing condition: Unit 42 has an open canopy, old growth stand structure. In the western hemlock mistletoe is light. In the 

Alaska-cedar decline is heavy. Windthrow risk is moderate overall, with more exposed knobs in the north being high risk. A 

previous harvest area is located in the central eastern portion of the unit. It is adequately restocked with trees at least 5 feet 

tall and meets NFMA requirements for no longer being considered an opening.

Silvicultural Objective/Desired Condition: The desired condition for this stand is a highly productive, healthy, windfirm stand 

grown for timber management that retains residual trees as needed to meet standards and guides or other objectives. 

Silvicultural Prescription: Even-age Management 

This stand is being recommended for harvest at this time because it is not expected to obtain the desired condition given the 

current growth trajectory. This stand is over-mature with heavy Alaska cedar decline and moderate to high defect resulting in 

a situation where stand growth is being offset or exceeded by decay. Even-aged clear cutting is being prescribed to preclude 

or minimize the risk of windthrow post harvest, promote natural regeneration by opening up the canopy, and minimize defect 

and disease in the future stand to the maximum extent possible. 

The legacy standard and guide applies in this VCU. This requires that approximately 20 acres of productive old growth 

representative of the overall composition of the planned harvest area be maintained indefinitely. The required legacy 

structure is planned to coincide with RMAs and isolated areas expected to be difficult to yard, which reduces required road 

length. Total mapped legacy equals about 20 acres. Any adjustments to the planned unit during implementation must 

consider the planned acreage of legacy.

 TIMBER/LOGGING:

 This unit is planned for helicopter yarding to landings on the existing NFS roads 3013100 and 3012120.

 ENGINEERING/ROADS:

No proposed road construction.

 BOTANY:

No Concerns

 FISHERIES:

Streams are tributaries to Goose Creek. Stream A1 characteristics do not include project-specific, field-verified, information.

Stream#: 1 Class: II, IV Flagging: B/W, G/W C- Type: HCL

Concerns: none

Buffer (RMA): Class II for HCL greater of 100 feet or to the top of the side-slope break. Class IV for HCL none.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): Will be identified by IDT during layout.

Protection: Category A and C 

Stream#: 1.1R Class: II, IV Flagging: B/W, G/W C- Type: HCL

Concerns: none

Buffer (RMA): Class II for HCL greater of 100 feet or to the top of the side-slope break. Class IV for HCL none.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): Will be identified by IDT during layout.

Protection: Category A and C 

Stream#: 1.1R.1R Class: II, IV Flagging: B/W, G/W C- Type: HCL

Concerns: none

Unit

Number 42 Alternatives 2, 3, 4, 5

Summary of Concerns, Responses, BMPs and Mitigation

 INVASIVE SPECIES:

No Concerns
Unit 42

Buffer (RMA): Class II for HCL greater of 100 feet or to the top of the side-slope break. Class IV for HCL none.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): Will be identified by IDT during layout.

Protection: Category A and C 

Stream#: A1 Class: II Flagging: B/W C- Type: HCL, HCO

Concerns: none known

Buffer (RMA): Class II for HCL and HCO greater of 100 feet or to the top of the side-slope break. 

Alternatives: 2, 3, 4, and 5 Buffer (RAW): Will be identified by IDT during layout.

Protection: Category A and C 

Stream#: 87-1.1R Class: III Flagging: O/W C- Type: HCD, HCM, HCV

Concerns: blowdown and active erosion

Buffer (RMA): Class III for HCD, HCM, and HCV to the top of the side-slope break.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed 

Protection: Category B 

All other streams in unit: Class: IV Flagging: G/W C- Type: HC or MM

Buffer (RMA): none Buffer (RAW): no review needed

Protection: Category C 

Temporary roads for Unit 42: Alternatives 2, 3, and 4 -- Four Class IV stream crossings. If any additional stream crossings 

are found, crossings structures and locations will be approved by USFS, in consultation with fisheries biologist or hydrologist, 

prior to construction (BMP 14.17). During construction of temporary roads implement BMPs 12.17, 13.10, 13.11, 13.16, 14.3, 

and 14.5.

 GEOLOGY/KARST:

No Concerns

 HERITAGE RESOURCES:

This unit was investigated per the third amended interagency Programmatic Agreement (PA) for historic properties. As 

specified by the PA, any potential adverse effect on historic properties (if any) was mitigated and portions of the Area of 

Potential Effect will be monitored by a qualified heritage specialist during and/or after actual ground disturbance.

 SCENERY:

The Scenic Integrity Objective (SIO) for this unit is Very Low . It is in Timber Production LUD and is considered Not Seen. 

There are no scenery resource concerns.

 RECREATION:

Harvest activities in this unit would be visible to recreationists using the existing road. Recreationists may also encounter 

logging traffic on the road. Harvest in this unit would be consistent with the applicable LUD (Timber Production) and would 

not change existing ROS settings. Harvest has occurred along the road system in the recent past (less than 30 years).

 SOILS/WETLANDS:

Alternatives 2, 3, 4, and 5:

Slopes range from 25 to 80%. Less than 1⁄2 acre of slopes greater than 72% were identified north part of the unit. Forested 

wetlands are dominant. The soils and wetlands are suitable for minimum partial suspension yarding or shovel yarding. All 

yarding should follow (BMPs 12.5, 13.2, and 13.9). Specifically, the shovel operator should avoid the small non-forested 

areas of the unit to prevent rutting. Slopes over 25% gradient may not be suitable for shovel yarding under some soil 

moisture conditions. Use care when approving shovel yarding on slopes over 25% gradient. Avoid track slippage and rutting. 

Alternatives 2, 3, and 4: 

The proposed temporary road will impact about 1/2 acre of forested wetland within the unit and about 1/2 acre of forested 

wetland outside of the unit that is needed to provide access to the unit. Wetland avoidance is not feasible due to the extent 

of wetlands within the unit. It was not possible to provide access by road with less wetland impacts (BMP 12.5, 13.2). 

Provide adequate cross drainage, remove drainage structures, and close road after harvest (BMP 14.9).

 WILDLIFE:

Includes average snow deer winter range (entire unit except eastern edge). Legacy standard and guideline applies in this 

VCU; Legacy acres cover some average snow deer winter range. 

Old-growth Reserve (OGR) Boundary

Alternatives 2, 4, and 5: Current small OGR boundary adjacent to unit to the east. (Alternative 4 adopts Interagency OGR but 

boundary in relation to this unit stays the same.)
Unit 42

Alternative 3: Small OGR boundary moved to the east.
3013000

3013200

3013100

1.1R.4R

1.1R.7R

1.1R.5R

84-1.1R.1R

A6

87-1.1R

1.3R

1.4R

1.1 R

1.1R.1R

1.1R .1 L

1.2R

2

1

A1

1.1R.3R

87-1.1R

1.1R.2R

1.1R.3L

1.1R.8R

1.1R.2 L

1.1R.9R

1.1R.10R

1.1R.6R

2005

1992

1992

1989

1989

1989

43

44

42

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 042 Alternative 2 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Partial Cut

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

597.2

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt2.mxd 14 July 2012

RR

SR
3013000

3013100

3013200

1.1R.8R

1.1R.2 L

1.1R.9R

1.1R.10R

1.1R.6R

1.1R.4R

1.1R.7R

1.1R.5R

84-1.1R.1R

A6

87-1.1R

1.3R

1.4R

1.1R

1.1R.1R

1.1R .1 L

1.2R

2

1

A1

1.1R.3R

87-1.1R

1.1R.2R

1.1R.3L

2005

1992

1992

1989

1989

1989

43

44

419

421

421

422

423

42

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 042 Alternative 3 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

597.2

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt3.mxd 14 July 2012

RR

SR
3013000

3013200

3013100

1.1R.4R

1.1R.7R

1.1R.5R

84-1.1R.1R

A6

87-1.1R

1.3R

1.4R

1.1 R

1.1R.1R

1.1R .1 L

1.2R

2

1

A1

1.1R.3R

87-1.1R

1.1R.2R

1.1R.3L

1.1R.8R

1.1R.2 L

1.1R.9R

1.1R.10R

1.1R.6R

2005

1992

1992

1989

1989

1989

43

44

42

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 042 Alternative 4 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

597.2

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt4.mxd 20 March 2012

RR

SR
3013000

3013200

3013100

1.1R.4R

1.1R.7R

1.1R.5R

84-1.1R.1R

A6

87-1.1R

1.3R

1.4R

1.1 R

1.1R.1R

1.1R .1 L

1.2R

2

1

A1

1.1R.3R

87-1.1R

1.1R.2R

1.1R.3L

1.1R.8R

1.1R.2 L

1.1R.9R

1.1R.10R

1.1R.6R

2005

1992

1992

1989

1989

1989

43

44

42

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 042 Alternative 5 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Sytematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

597.2

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt5.mxd 14 July 2012

RR

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Unit 43

Total Unit

Acres:

11.3 Prescription: Clearcut

VCU

Number:

597.

2

Harvest

System:

Cable, Shovel

Net Harvest

Volume

(MBF):

203

LUD:

Timber Production

 SILVICULTURE:

Existing Condition: This unit is primarily low to moderate volume old growth with high defect and low grade. Mistletoe is light 

and stem decay moderate in the western hemlock across the unit. Alaska-cedar decline is moderate, being more prevalent 

where drainage is restricted. Defect for all species is moderate to high. Windthrow risk is moderate. A previous harvest area 

is located adjacent to the eastern corner of the unit. It is adequately restocked with trees at least 5 feet tall and meets NFMA 

requirements for no longer being considered an opening.

Silvicultural Objective/Desired Condition: The desired condition for this stand is a highly productive, healthy, windfirm stand 

grown for timber management that retains residual trees as needed to meet standards and guides or other objectives. 

Silvicultural Prescription: Even-age Management -Clearcut 

This stand is being recommended for harvest at this time because it is not expected to obtain the desired condition given the 

current growth trajectory. This stand is over-mature with high stem decay and defect resulting in a situation where stand 

growth is being offset or exceeded by decay. Even-aged clear cutting is being prescribed to preclude or minimize the risk of 

windthrow post harvest, promote natural regeneration by opening up the canopy, and minimize defect and disease in the 

future stand to the maximum extent possible.

In legacy VCU, but legacy not required because orignal planned opening was less than 20 acres.

 TIMBER/LOGGING:

This unit is planned for a combination of shovel and cable yarding. Cable settings are planned for uphill and downhill yarding 

to landings on the proposed temporary road and existing NFS road 3013200. Shovel settings are planned for yarding to the 

existing NFS road 3013200.

 ENGINEERING/ROADS:

Unit is accessed by a proposed temporary road, totaling 500 feet, as displayed on the unit card.

 BOTANY:

No Concerns

 FISHERIES:

Streams are tributaries to Goose Creek. 

Stream#: 1.1R Class: III Flagging: O/W C- Type: HCD, HCM

Concerns: blowdown and active erosion

Buffer (RMA): Class III for HCD and HCM to the top of the side-slope break.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed 

Protection: Category B 

 

All other streams in unit: Class: IV Flagging: G/W C- Type: HC or MM

Buffer (RMA): none Buffer (RAW): no review needed

Protection: Category C 

Temporary roads for Unit 43: All Alternatives -- No known stream crossings. The temporary roads have not been field 

verified and will be surveyed before implementation. If any stream crossings are found, crossings structures and locations 

will be approved by USFS, in consultation with fisheries biologist or hydrologist, prior to construction (BMP 14.17). During 

construction of temporary roads implement BMPs 12.17, 13.10, 13.11, 13.16, 14.3, and 14.5.

 GEOLOGY/KARST:

Unit

Number 43 Alternatives 2, 3, 4, 5

Summary of Concerns, Responses, BMPs and Mitigation

 INVASIVE SPECIES:

No Concerns
Unit 43

No Concerns

 HERITAGE RESOURCES:

This unit was investigated per the third amended interagency Programmatic Agreement (PA) for historic properties. As 

specified by the PA, any potential adverse effect on historic properties (if any) was mitigated and portions of the Area of 

Potential Effect will be monitored by a qualified heritage specialist during and/or after actual ground disturbance.

 SCENERY:

The Scenic Integrity Objective (SIO) for this unit is Very Low . It is in Timber Production LUD and is considered Not Seen. 

There are no scenery resource concerns.

 RECREATION:

Harvest activities in this unit would be visible to recreationists using the existing road. Recreationists may also encounter 

logging traffic on the road. Harvest in this unit would be consistent with the applicable LUD (Timber Production) and would 

not change existing ROS settings. Harvest has occurred along the road system in the recent past (less than 30 years).

 SOILS/WETLANDS:

Based on digital elevation model, slopes range from about 10% to about 55%. There is less than 1/4 acre (<1% of the unit) of 

forested wetland in the unit (BMP 12.5), based on GIS information. A minimum of partial suspension will meet soil and 

wetland resource concerns (BMPs 12.5, 13.5, and 13.9).

The proposed temporary road does not traverse any wetlands.

 WILDLIFE:

Includes average snow deer winter range (entire unit), some of which is also deep snow marten habitat/deer winter range 

(eastern lobe of unit). Legacy standard and guideline applies in this VCU; however there are no requirements for this unit 

because the original planned opening was less than 20 acres. 

Old-growth Reserve (OGR) Boundary

Alternatives 2 and 5: Current OGR boundary adjacent to unit to the east. 

Alternative 3: OGR boundary moved to the east, but is still adjacent to northeast corner of unit.

Alternative 4: Adopts Interagency OGR in different location, but adjacent to eastern boundary of unit.
LAKE 

A1

LAKE A1

3013000

3013200

3013100

84-1.1R.1R

A2

A4

87-1.1R

A1

1.1 R

1.1R.1R

1.1R .1 L

1.2R

2

1

1.1R.3R

1.3R

1.1R.2R

1.1R.3L

1.1R.8R

A1

1.1R.2 L

1.1R.9R

1.1R.10R

1.4R

1.1R

87-1.1R

1.1R.6R

1.1R.4R

1.1R.7R

1.1R.5R

1992

1989

1989

1989

43

44

42

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 043 Alternative 2 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Partial Cut

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

597.2

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt2.mxd 14 July 2012

RR

SR
LAKE 

A1

LAKE A1

3013200

3013100

3013000

87-1.1R

1.1R.4R

1.1R.7R

1.1R.5R

84-1.1R.1R

A2

A4

87-1.1R

1.1R.6R

A1

1.1R

1.1R.1R

1.1R .1 L

1.2R

2

1

1.1R.3R

1.3R

1.1R.2R

1.1R.3L

1.1R.8R

A1

1.1R.2 L

1.1R.9R

1.1R.10R

1.4R

1.1R

1989

1992

1989

1989

43

44

419

420

421 422 421

42

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 043 Alternative 3 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

597.2

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt3.mxd 14 July 2012

RR

SR
LAKE 

A1

LAKE A1

3013000

3013100

3013200

1.1R.5R

84-1.1R.1R

A2

A4

87-1.1R

A1

1.1 R

1.1R.1R

1.1R .1 L

1.2R

2

1

1.1R.3R

1.3R

1.1R.2R

1.1R.3L

1.1R.8R

A1

1.1R.2 L

1.1R.9R

1.1R.10R

1.4R

1.1R

87-1.1R

1.1R.6R

1.1R.4R

1.1R.7R

1992

1989

1989

1989

43

44

418

42

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 043 Alternative 4 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

597.2

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt4.mxd 20 March 2012

RR

SR
LAKE 

A1

LAKE A1

3013000

3013200

3013100

84-1.1R.1R

A2

A4

87-1.1R

A1

1.1 R

1.1R.1R

1.1R .1 L

1.2R

2

1

1.1R.3R

1.3R

1.1R.2R

1.1R.3L

1.1R.8R

A1

1.1R.2 L

1.1R.9R

1.1R.10R

1.4R

1.1R

87-1.1R

1.1R.6R

1.1R.4R

1.1R.7R

1.1R.5R

1992

1989

1989

1989

43

44

42

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 043 Alternative 5 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Sytematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

597.2

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt5.mxd 14 July 2012

RR

SR
Unit 44

Total Unit

Acres:

2, 3, 5 - 30.8

4 - 37.7

Prescription: 2, 3, 5 - Clearcut

4 - 33% Removal

VCU

Number:

597.

2

Harvest

System:

Cable, 

Shovel, 

Net Harvest

Volume

(MBF):

2, 3, 5 - 993

4 - 369 LUD:

Timber Production

 SILVICULTURE:

Existing Condition: Unit 44 has old growth stand structure. In the western hemlock mistletoe varies from light to heavy with 

the heavy concentrations in the central portions of the unit. The overstory is generally over-mature with moderate to high 

stem decay in all species. Alaska-cedar decline occurs throughout the area with heavy occurrence on lower site index areas 

and poorly drained micro sites. Windthrow risk is moderate. All past harvest areas adjacent to or near this unit are 

adequately restocked with trees at least 5 feet tall meeting the NFMA requirements for no longer being considered an 

opening.

Silvicultural Objective/Desired Condition: The desired condition for this stand is a highly productive, healthy, windfirm stand 

grown for timber management that retains residual trees as needed to meet standards and guides or other objectives. 

Silvicultural Prescription: Even-age Management (Alternatives 2, 3, and 5)

This unit is being recommended for harvest at this time because it does not currently meet the desired condition. This stand 

is over-mature with heavy stem decay and defect resulting in a situation where stand growth is being offset or exceeded by 

decay. Even-aged clear cutting is being prescribed to preclude or minimize the risk of windthrow post harvest, promote 

natural regeneration by opening up the canopy, and minimize defect and disease in the future stand to the maximum extent 

possible. 

The legacy standard and guide applies in this VCU. This requires that approximately 15 acres of productive old growth 

representative of the overall composition of the planned harvest area be maintained indefinitely. The required legacy 

structure is planned to block up areas and coincide with areas of difficult yarding or poor economics. Total mapped legacy is 

about 18 acres. Any adjustments to the planned unit during implementation must consider the planned acreage of legacy. 

Silvicultural Prescription: Uneven-age Management Group Selection (Alternative 4)

Harvest up to 33% of the planned setting acreage in groups of trees up to two acres in size. Group selections should be well 

distributed across the stand however, because most of the unit is cable, most groups will need to be in corridors. Locate 

groups to address insect and disease issues or capitalize on existing advanced regeneration of desirable tree species where 

possible. Locate group selections to maintain wildlife travel ways and important habitat while maximizing the economics of 

this entry and also maintaining the feasibility of future harvest entries in the remaining old growth portions of the unit. The 

uneven-aged group selection regeneration method is being prescribed for the unit or portions of the unit as a means to 

maintain large amounts of diverse structure to benefit wildlife in perpetuity.

 TIMBER/LOGGING:

This unit is planned for a combination of cable and shovel yarding. Shovel settings are planned for yarding to the existing 

NFS road 3013000. Cable settings are planned for uphill and downhill yarding to the existing NFS roads 3013000 and 

3013200.

Soils concerns require the entire area downslope of the upper road to have full suspension during cable yarding. It is planned 

for cable yarding in Alternatives 2,3, and 5. It appears that full suspension can be achieved. Existing NFS road 3013220 is 

located across the canyon from the unit. This road could be used to place equipment to be used as a tailhold. There is also a 

possibility of utilizing a tailhold in the larger timber located near Unit 418. These settings should be evaluated at 

implementation to ensure that full suspension will be achieved. If field evaluation determines that full suspension is unlikely, 

the setting should be switched to helicopter yarding in all alternatives.

Small OGR adjacent to unit in some alternatives (see Wildlife comments).

 ENGINEERING/ROADS:

No proposed road construction.

 BOTANY:

Unit

Number 44 Alternatives 2, 3, 4, 5

Summary of Concerns, Responses, BMPs and Mitigation
Unit 44

 BOTANY:

No Concerns

 FISHERIES:

Streams are tributaries to Goose Creek. Class II and III stream characteristics do not include project-specific, field-verified, 

information.

Stream#: 1.2R Class: III, IV Flagging: O/W, G/W C- Type: HCM, HCO

Concerns: none known

Buffer (RMA): Class III for HCM to the side-slope break. Class IV for HCO none.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed

Protection: Category B and C 

Stream#: 1.3R Class: II, IV Flagging: B/W, G/W C- Type: HCM, HCO

Concerns: none known

Buffer (RMA): Class II for HCM greater of 100 feet or the side-slope break. Class IV for HCO none.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed

Protection: Category A and C 

Stream#: A1 Class: III Flagging: O/W C- Type: HCM

Concerns: none known

Buffer (RMA): Class III for HCM to the side-slope break

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed

Protection: Category B

All streams in unit: Class: IV Flagging: G/W C- Type: HC or MM

Buffer (RMA): none Buffer (RAW): no review needed

Protection: Category C

 GEOLOGY/KARST:

No Concerns

 HERITAGE RESOURCES:

This unit was investigated per the third amended interagency Programmatic Agreement (PA) for historic properties. As 

specified by the PA, any potential adverse effect on historic properties (if any) was mitigated and portions of the Area of 

Potential Effect will be monitored by a qualified heritage specialist during and/or after actual ground disturbance.

 SCENERY:

The Scenic Integrity Objective (SIO) for this unit is Very Low . It is in Timber Production LUD and is considered Not Seen. 

There are no scenery resource concerns.

 RECREATION:

Harvest activities in this unit would be visible to recreationists using the existing road. Recreationists may also encounter 

logging traffic on the road. Harvest in this unit would be consistent with the applicable LUD (Timber Production) and would 

not change existing ROS settings. Harvest has occurred along the road system in the recent past (less than 30 years).

 SOILS/WETLANDS:

Slopes range from 65 to greater than 90% below the 3013000 road to about half way down the slope. Slopes average 65% 

on the lower portion of the hill on the eastern portion of the unit. Slopes above the 3013000 road are more gentle. The only 

forested wetland area observed is located below the existing road line on the Kaikli soils. Above the existing road line, 

forested wetland and emergent short sedge complexes occur. All of the unit below the 3013000 road is only suitable for 

harvest with full suspension. A minimum of partial suspension or shovel yarding will meet soil and wetland resource concerns 

in the remainder of the unit. All yarding systems should follow BMPs 12.5, 13.2 and 13.9. Specifically, the shovel operator 

should avoid the small non-forested areas of the unit to prevent rutting. Slopes over 25% gradient may not be suitable for 

shovel yarding under some soil moisture conditions. Use care when approving shovel yarding on slopes over 25% gradient. 

Avoid track slippage and rutting.

 WILDLIFE:

 INVASIVE SPECIES:

No Concerns
Unit 44

Includes average snow deer winter range (northern half of unit), some of which is also deep snow marten habitat/deer winter 

range (northeastern lobe of unit). Legacy standard and guideline applies in this VCU; Legacy acres cover some average 

snow deer winter range. 

Alternative 4: Prescription is group selection with 33 percent basal area removal to maintain habitat values. No Legacy acres 

required because adequate structure retained in unit under uneven-aged harvest prescription (i.e., no openings larger than 

20).

Old-growth Reserve (OGR) Boundary

Alternatives 2 and 5: Current OGR boundary adjacent to unit to the east. 

Alternative 3: OGR boundary moved to the east. 

Alternative 4: Adopts Interagency OGR in a different location.
LAKE 

A1

LAKE A1

3013200

3013000

3013220

1.5R

1.1R.5R

1.5R.1L

87-1.1R

1.4R

A1

A2

A4

1.1R .1 L

1.2R

1.1R

1.1R.3R

1.3R

1.1R.3L

1.1R.8R

1.1R.2 L

1.1R.9R

A2

1.1R.10R

A2.1L

87-1.1R

1.1R.6R

1.1R.4R

1.1R.7R

1992

1989

1989

1989

1989

1989

1989

43

44

42

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 044 Alternative 2 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Partial Cut

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

597.2

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt2.mxd 14 July 2012

RR

SR
LAKE 

A1

LAKE A1

3013200

3013000

3013220

1.1R.4R

1.1R.7R

1.5R

1.1R.5R

1.5R.1L

87-1.1R

1.4R

A1

A2

A4

1.1R .1 L

1.2R

1.1R

1.1R.3R

1.3R

1.1R.3L

1.1R.8R

1.1R.2 L

1.1R.9R

A2

1.1R.10R

A2.1L

87-1.1R

1.1R.6R

1992

1989

1989

1989

1989

1989

1989

43

44

419

422

42

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 044 Alternative 3 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

597.2

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt3.mxd 14 July 2012

RR

SR
LAKE 

A1

LAKE A1

3013200

3013220

3013000

1.1R.7R

1.5R

1.1R.5R

1.5R.1L

87-1.1R

1.4R

A1

A2

A4

1.1R .1 L

1.2R

1.1R

1.1R.3R

1.3R

1.1R.3L

1.1R.8R

1.1R.2 L

1.1R.9R

A2

1.1R.10R

A2.1L

87-1.1R

1.1R.6R

1992 1.1R.4R

1989

1989

1989

1989

1989

1989

43

44

418

42

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 044 Alternative 4 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

597.2

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt4.mxd 20 March 2012

RR

SR
LAKE 

A1

LAKE A1

3013200

3013000

3013220

1.5R

1.1R.5R

1.5R.1L

87-1.1R

1.4R

A1

A2

A4

1.1R .1 L

1.2R

1.1R

1.1R.3R

1.3R

1.1R.3L

1.1R.8R

1.1R.2 L

1.1R.9R

A2

1.1R.10R

A2.1L

87-1.1R

1.1R.6R

1.1R.4R

1.1R.7R

1992

1989

1989

1989

1989

1989

1989

43

44

42

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 044 Alternative 5 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Sytematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

597.2

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt5.mxd 14 July 2012

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Unit 46

Total Unit

Acres:

2, 3, 5 - 29.2

4 - 30.9

Prescription: 2, 3, 5 - Clearcut

4 - 25% and 

33% Removal

VCU

Number:

597.

2

Harvest

System:

Cable, 

Helicopter

Net Harvest

Volume

(MBF):

2, 3, 5 - 780

4 - 265 LUD:

Timber Production

 SILVICULTURE:

Existing Conditions: Unit 46 is old growth Sitka spruce and western hemlock with gap phase stand development. Timber 

volume is average to high with numerous large diameter trees that are generally low grade and high defect. The western 

hemlock and the mountain hemlock in the stand have high to very high defect and damages. Mistletoe is light. The Sitka 

spruce are large diameter but have lower grade and moderate to high defect (large limbs and spiral cracks). Windthrow risk 

is moderate. All past harvest areas adjacent to or near this unit are adequately restocked with trees at least 5 feet tall 

meeting the NFMA requirements for no longer being considered an opening.

Silvicultural Objective/Desired Condition: The desired condition for this stand is a highly productive, healthy, windfirm stand 

grown for timber management that retains residual trees as needed to meet standards and guides or other objectives. 

Silvicultural Prescription: Even-age Management (Alternatives 2,3, and 5)

This stand is being recommended for harvest at this time because it is not expected to obtain the desired condition given the 

current growth trajectory. This stand is over-mature with heavy stem decay and defect resulting in a situation where stand 

growth is being offset or exceeded by decay. Even-aged clear cutting is being prescribed to preclude or minimize the risk of 

windthrow post harvest, promote natural regeneration by opening up the canopy, and minimize defect and disease in the 

future stand to the maximum extent possible. 

The legacy standard and guide applies in this VCU. This requires that approximately 12 acres of productive old growth 

representative of the overall composition of the planned harvest area be maintained indefinitely. The required legacy 

structure is planned to coincide with areas of unsuitable soils, steep slopes and blind leads. Total mapped legacy equals 

about 12 acres. Any adjustments to the planned unit during implementation must consider the planned acreage of legacy. 

Silvicultural Prescription: Uneven-age Management Group Selection (Alternative 4 Cable Settings)

Harvest up to 33% of the planned setting acreage in groups of trees up to two acres in size. Group selections should be well 

distributed across the stand, but would mostly be in corridors. Locate groups to address insect and disease issues or 

capitalize on existing advanced regeneration of desirable tree species where possible. Locate group selections to maintain 

wildlife travel ways and important habitat while maximizing the economics of this entry and also maintaining the feasibility of 

future harvest entries in the remaining old growth portions of the unit. The uneven-aged group selection regeneration method 

is being prescribed for the unit or portions of the unit as a means to maintain large amounts of diverse structure to benefit 

wildlife in perpetuity. 

Silvicultural Prescription: Uneven-age Management Single Tree Selection (Alternative 4, Helicopter Settings)

Maintain at least 75 percent of the setting pretreatment basal area, based on standing live tree total for the unit, uncut. 

Individual trees selected for harvest may occur in small groups but will generally be evenly distributed across the stand. Any 

small groups will usually be less than one acre but may occasionally go up to two acres in size where needed to address 

insect and disease issues or capitalize on existing advanced regeneration of desirable tree species. Trees selected for 

harvest will generally be well distributed and no large openings will occur as a result of the harvest. Review the marking 

guides and silvicultural prescription for more detailed information and direction for how to implement this prescription. The 

uneven-aged single tree selection regeneration method is being prescribed for this unit in Alternative 4 specifically to 

maintain intact diverse structure for wildlife needed at this time and place in the landscape to meet the objectives of this 

alternative. This system is not optimum for promoting timber production but is being prescribed in alternative 4 primarily to 

mitigate the overall effects of the project on wildlife.

 TIMBER/LOGGING:

This unit is planned for a combination of cable and helicopter yarding. Cable settings are planned for uphill and downhill 

yarding to the existing NFS road 3013000 and the proposed temporary road. Helicopter settings are planned for yarding to 

existing NFS road 3013000.

 ENGINEERING/ROADS:

Unit

Number 46 Alternatives 2, 3, 4, 5

Summary of Concerns, Responses, BMPs and Mitigation
Unit 46

Unit is accessed by a proposed temporary road, totaling 1000 feet, as displayed on the unit card.

 BOTANY:

No Concerns

 FISHERIES:

Streams are tributaries to Goose Creek. 

Stream#: 1 Class: III Flagging: O/W C- Type: HCM

Concerns: none

Buffer (RMA): Class III for HCM to the top of side-slope break

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed

Protection: Category B 

Stream#: 3 Class: III , IV Flagging: O/W, G/W C- Type: HCM, HCO

Concerns: none known

Buffer (RMA): Class III for HCM to the top of side-slope break, Class IV for HCO none.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed

Protection: Category B and C 

All streams in unit: Class: IV Flagging: G/W C- Type: HC or MM

Buffer (RMA): none Buffer (RAW): no review needed

Protection: Category C 

Temporary roads for Unit 46: All Alternatives -- One Class IV stream crossing. If any additional stream crossings are found, 

crossings structures and locations will be approved by USFS, in consultation with fisheries biologist or hydrologist, prior to 

construction (BMP 14.17). During construction of temporary roads implement BMPs 12.17, 13.10, 13.11, 13.16, 14.3, and 

14.5.

 GEOLOGY/KARST:

No Concerns

 HERITAGE RESOURCES:

This unit was investigated per the third amended interagency Programmatic Agreement (PA) for historic properties. As 

specified by the PA, any potential adverse effect on historic properties (if any) was mitigated and portions of the Area of 

Potential Effect will be monitored by a qualified heritage specialist during and/or after actual ground disturbance.

 SCENERY:

The Scenic Integrity Objective (SIO) for this unit is Very Low . It is in Timber Production LUD and is considered Not Seen. 

There are no scenery resource concerns.

 RECREATION:

Harvest activities in this unit would be visible to recreationists using the existing road. Recreationists may also encounter 

logging traffic on the road. Harvest in this unit would be consistent with the applicable LUD (Timber Production) and would 

not change existing ROS settings. Harvest has occurred along the road system in the recent past (less than 30 years).

 SOILS/WETLANDS:

Slopes range between 45 and 95%. All slopes greater than 72% are located within the soil exclusion areas. About 10 acres 

were excluded because they are unsuitable for harvest due to very high landslide potential, colluvial activity, MMI4 soils, 

steep slopes, and unstable drainages. A debris torrent initiates within the unit and travels downslope to the southeast. A 

minimum of partial suspension will meet soil and wetland resource concerns in the modified unit.

No wetlands have been mapped in the unit.

 WILDLIFE:

Includes average snow deer winter range (portion of unit east of road). Legacy standard and guideline applies in this VCU; 

Legacy acres cover some average snow deer winter range.

Alternative 4: Prescriptions are 25% basal area removal and group selection with 33% basal area removal to maintain 

 INVASIVE SPECIES:

No Concerns
Unit 46

connectivity between Honker large OGR and Karta Wilderness. No Legacy acres required because adequate structure 

retained in unit under uneven-aged harvest prescription (i.e., no openings larger than 20 acres).

Old-growth Reserve (OGR) Boundary

Alternatives 2 and 5: Current OGR boundary just east of unit. 

Alternative 3: OGR boundary moved to the east. 

Alternative 4: Adopts Interagency OGR in a different location, no longer adjacent to unit.
3013200

3013220

3013000

3013000

A13

1.5R.1L

4.2L

4

3.1R

A2

3.1L.1R

4.1L

5

1.7R

3.1R.1R

A2

1

1.7R.1R

1

1

1

1.10R

1.7R.1R.2 L

1.9R

3.1R

1.7R.1R

3.1L

4

3.1R

2

1.1R

2

1.7R.4R

1

3

4

1.6R.1L

1.12R

1.6R

1.1L

A11

1.7R.3R

B2

3

A12

3

1.7R.2R

A5

1.7R.1R.1L

1.10R.1L

1.5R

1.11R

2

1

B1

B3

1989

1989

1989

1989

47

46

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 046 Alternative 2 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Partial Cut

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

597.2

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt2.mxd 14 July 2012

RR

SR
3013200

3013220

3013000

3013000

3.1L.1R

1.7R.1R.1L

1.10R.1L

1.5R.1L

2

1

B1

B3

1.5R

4.2L

A133.1R

A2

4.1L

5

1.7R

4

3.1R.1R

A2

1

1.7R.1R

1

1

1

1.10R

1.7R.1R.2 L

1.9R

3.1R

1.7R.1R

3.1L

4

3.1R

2

1.1R

2

1.7R.4R

1

3

4

1.6R.1L

1.12R

1.6R

1.1L

A11

1.7R.3R

B2

3

A12

1.11R

3

1.7R.2R

A5

1989

1989

1989

1989

47

413

414

414

414

414

414

46

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 046 Alternative 3 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

597.2

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt3.mxd 14 July 2012

RR

SR
3013000

3013200

3013220

3.1L.1R

1.7R.1R.1L

1.10R.1L

1.5R.1L

2

1

B1

B3

3.1L

1.5R

4.2L

A133.1R

A2

4.1L

5

1.7R

4

3.1R.1R

A2

1

1.7R.1R

1

1

1

1.10R

1.7R.1R.2 L

1.9R

3.1R

1.7R.1R

3

4

3.1R

2

1.1R

2

1.7R.4R

1

3

4

1.6R.1L

1.12R

1.6R

1.1L

A11

1.7R.3R

B2

A12

1.11R

3

1.7R.2R

A5

1989

1989

1989

1989

410

413

414

414

414

414

414

46

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 046 Alternative 4 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

597.2

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt4.mxd 20 March 2012

RR

SR
3013200

3013220

3013000

3013000

A13

1.5R.1L

4.2L

4

3.1R

A2

3.1L.1R

4.1L

5

1.7R

3.1R.1R

A2

1

1.7R.1R

1

1

1

1.10R

1.7R.1R.2 L

1.9R

3.1R

1.7R.1R

3.1L

4

3.1R

2

1.1R

2

1.7R.4R

1

3

4

1.6R.1L

1.12R

1.6R

1.1L

A11

1.7R.3R

B2

3

A12

3

1.7R.2R

A5

1.7R.1R.1L

1.10R.1L

1.5R

1.11R

2

1

B1

B3

1989

1989

1989

1989

47

46

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 046 Alternative 5 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Sytematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

597.2

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt5.mxd 14 July 2012

RR

SR
Unit 47

Total Unit

Acres:

2 - 41.3

3, 5 - 46.5

Prescription: Clearcut

VCU

Number:

597.

2

Harvest

System:

Cable, 

Helicopter

Net Harvest

Volume

(MBF):

2 - 1,106

3, 5 - 1,246 LUD:

Timber Production

 SILVICULTURE:

Existing Condition: Unit 47 is old-growth timber with varying characteristics due primarily to the 900’ elevation change in the 

unit. In the hemlock, mistletoe is light and stem decay is moderate to high with heavy defect in the larger stems. Alaskacedar decline is evident throughout the unit particularly in the upper elevations. Moderate to high defect and damage are 

present in all species except the medium sized Alaska-cedar where they are low. Windthrow risk is moderate. All past 

harvest areas adjacent to or near this unit are adequately restocked with trees at least 5 feet tall meeting the NFMA 

requirements for no longer being considered an opening. Old growth LUD borders the southern boundary.

Silvicultural Objective/Desired Condition: The desired condition for this stand is a highly productive, healthy, windfirm stand 

grown for timber management that retains residual trees as needed to meet standards and guides or other objectives. 

Silvicultural Prescription: Even-age Management 

This stand is being recommended for harvest at this time because it is not expected to obtain the desired condition given the 

current growth trajectory. This stand is over-mature with moderate to high stem decay and defect resulting in a situation 

where stand growth is being offset or exceeded by decay. Even-aged clear cutting is being prescribed to preclude or 

minimize the risk of windthrow post harvest, promote natural regeneration by opening up the canopy, and minimize defect 

and disease in the future stand to the maximum extent possible. 

The legacy standard and guide applies in this VCU. This requires that approximately 20 acres of productive old growth 

representative of the overall composition of the planned harvest area be maintained indefinitely. The required legacy 

structure is planned to coincide primarily with areas of unsuitable soils and steep slopes, with some small additions to block 

up retention. Mapped legacy equals about 21 acres. Any adjustments to the planned unit during implementation must 

consider the planned acreage of legacy.

 TIMBER/LOGGING:

This unit is planned for a combination of cable and helicopter yarding. Cable settings are planned for uphill and downhill 

yarding to landings on the proposed NFS road 3013000.The helicopter yarding is planned to landings on existing NFS road 

3013000.

 ENGINEERING/ROADS:

Unit is accessed by proposed NFS road 3013000 in Alternatives 2, 3,and 5, totaling 1400 feet in Alternatives 2 and 5 and 

2000 feet in Alternative 3 , as displayed on the unit card. See road card for specific information on this road.

 BOTANY:

No Concerns

 FISHERIES:

Unit

Number 47 Alternatives 2, 3, 5

Summary of Concerns, Responses, BMPs and Mitigation

 INVASIVE SPECIES:

No Concerns
Unit 47

Streams are tributaries to Goose Creek. Stream A2 characteristics do not include project-specific, field-verified, information.

Stream#: 4 Class: III, IV Flagging: O/W, G/W C- Type: HCM, HCO

Concerns: none

Buffer (RMA): Class III for HCM to the top of side-slope break. Class IV for HCO none.

Alternatives: 2, 3, and 5 Buffer (RAW): no review needed

Protection: Category B and C 

Stream#: A2 Class: III Flagging: O/W C- Type: HCM

Concerns: none known

Buffer (RMA): Class III for HCM to the top of the side-slope break. Class IV for HCO none.

Alternatives: 2, 3, and 5 Buffer (RAW): no review needed

Protection: Category B 

Stream#: 5 Class: IV Flagging: O/W, G/W C- Type: HCO

Concerns: high substrate load

Buffer (RMA): Class IV for HCO to the top of the side-slope break. Class IV for HCO none.

Alternatives: 2, 3, and 5 Buffer (RAW): no review needed

Protection: Category B and C

All other streams in unit: Class: IV Flagging: G/W C- Type: HC or MM

Buffer (RMA): none Buffer (RAW): no review needed

Protection: Category C

 GEOLOGY/KARST:

No Concerns

 HERITAGE RESOURCES:

This unit was investigated per the third amended interagency Programmatic Agreement (PA) for historic properties. As 

specified by the PA, any potential adverse effect on historic properties (if any) was mitigated and portions of the Area of 

Potential Effect will be monitored by a qualified heritage specialist during and/or after actual ground disturbance.

 SCENERY:

The Scenic Integrity Objective (SIO) for this unit is Very Low . It is in Timber Production LUD and is considered Not Seen. 

There are no scenery resource concerns.

 RECREATION:

No Concerns

 SOILS/WETLANDS:

Slopes range between 45 and 95%. All slopes greater than 72%, about 1 acre, are located within the soil exclusion areas. 

About 9 acres were excluded due to very high landslide potential, colluvial activity, MMI4 soils, steep slopes, and unstable 

drainages. A 1/2 acre debris avalanche is located outside of but adjoining the soil exclusion area; it is not part of the unit to 

be harvested. No wetlands identified in the unit. A minimum of partial suspension will meet soil and wetland resource 

concerns in the modified unit.

 WILDLIFE:

Includes average snow deer winter range (southern end of unit). Legacy standard and guideline applies in this VCU; Legacy 

acres do not cover deer winter range. Wolf sign observed in unit. 

Alternative 4: Unit dropped to maintain connectivity between Honker large OGR and Karta Wilderness and reduce road 

building (and associated effects to wildlife). 

Old-growth Reserve (OGR) Boundary

Alternatives 2 and 5: Current OGR boundary adjacent to unit to the east. 

Alternative 3: OGR boundary moved to the east. 

Alternative 4: Adopts Interagency OGR in a different location.
3013000

3013000

1.7R.4

A4

A5

2

1.12R

1.7R

4.2 L

A2

3.1L.1R

1.11R

5

3.1R.1R

5.3R

4

B1

A6

1

5.2R

1

4.1L

3.1R

3.1 R

4

3.1R

5.1R

A1

2

1.1R

3

4

1.10R.1L

2

A3

1

1.1L

3

3.1L

B3

3

1

1989

1989

1989

47

46

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 047 Alternative 2 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Partial Cut

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

597.2

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt2.mxd 14 July 2012

RR

SR
3013000

3013000

4.2 L

B3

3

1

A4

A5

2

1.12R

1.7R.4

1.7R

A2

3.1L.1R

1.11R

3.1 R

5

3.1R.1R

5.3R

4

B1

A6

1

5.2R

1

4.1L

3.1R

3.1L

4

3.1R

5.1R

A1

2

1.1R

3

4

1.10R.1L

2

A3

1

1.1L

3

1989

1989

1989

47

413

414

414

414

46

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 047 Alternative 3 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

597.2

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt3.mxd 14 July 2012

RR

SR
3013000

3013000

1.7R.4

A4

A5

2

1.12R

1.7R

4.2 L

A2

3.1L.1R

1.11R

5

3.1R.1R

5.3R

4

B1

A6

1

5.2R

1

4.1L

3.1R

3.1 R

4

3.1R

5.1

R

A1

2

1.1R

3

4

1.10R.1L

2

A3

1

1.1L

3

3.1L

B3

3

1

1989

1989

1989

47

46

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 047 Alternative 5 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Sytematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

597.2

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt5.mxd 14 July 2012

RR

SR
Unit 48

Total Unit

Acres:

11.5 Prescription: Clearcut

VCU

Number:

597.

2

Harvest

System:

Shovel

Net Harvest

Volume

(MBF):

168

LUD:

Timber Production

 SILVICULTURE:

Existing Conditions: Unit 48 has old-growth stand structure with a western hemlock and western redcedar overstory. In the 

hemlock, stem rot is moderate to high and mistletoe infection is light. Alaska-cedar decline is moderate to high. Defect for all 

species is moderate to high. Windthrow risk is moderate. All past harvest areas adjacent to or near this unit are adequately 

restocked with trees at least 5 feet tall meeting the NFMA requirements for no longer being considered an opening.

Silvicultural Objective/Desired Condition: The desired condition for this stand is a highly productive, healthy, windfirm stand 

grown for timber management that retains residual trees as needed to meet standards and guides or other objectives. 

Silvicultural Prescription: Even-age Management 

This stand is being recommended for harvest at this time because it is not expected to obtain the desired condition given the 

current growth trajectory. This stand is over-mature with moderate to high stem decay and defect resulting in a situation 

where stand growth is static or being exceeded by decay. Even-aged clear cutting is being prescribed to preclude or 

minimize the risk of windthrow post harvest, promote natural regeneration by opening up the canopy, and minimize defect 

and disease in the future stand to the maximum extent possible. 

The legacy standard and guide applies in this VCU; however, the original planned unit was less than 20 acres and, as a 

result, does not require acreage to be set aside.

 TIMBER/LOGGING:

This unit is planned for shovel yarding to the existing NFS road 3013155.

 ENGINEERING/ROADS:

No proposed road construction

 BOTANY:

Two llesser round-leaved orchid (sensitive plant) populations are entirely in unit. Populations included in unit due to low 

habitat quality due to proximity to existing roads and due to small to moderate numbers (22 plants total). 

Another lesser round-leaved orchid population is also indirectly affected, located south of the unit.

 FISHERIES:

Streams are tributaries to Goose Creek. 

Stream#: 7 Class: I Flagging: B/W C- Type: HCL, MMO

Concerns: none known

Buffer (RMA): Class I for HCL - greater of 100 feet or to the top of the side-slope break. Class I for MMO greater of 120 feet , 

flood plain, riparian vegetation or soils, or riparian associated wetland fens.

Alternatives: 2, 3, and 5 Buffer (RAW): no review needed

Protection: Category A 

Stream#: 6 Class: II, IV Flagging: B/W, G/W C- Type: HCOw

Concerns: none known

Buffer (RMA): Class II for HCO - greater of 100 feet or to the top of the side-slope break. Class IV for HCOw none.

Alternatives: 2, 3, and 5 Buffer (RAW): no review needed

Protection: Category A and C

Unit

Number 48 Alternatives 2, 3, 5

Summary of Concerns, Responses, BMPs and Mitigation

 INVASIVE SPECIES:

No Concerns
Unit 48

Stream#: Lake-1 Class: I Flagging: B/W C- Type: L

Concerns: none

Buffer (RMA): Class I for Lake-1 - greater of 100 horizontal feet or to the extent of the flood plain, riparian vegetation or soils, 

riparian associated wetland fens, or one site-potential tree height. 

Alternatives: 2, 3, and 5 Buffer (RAW): no review needed

Protection: Category A

All other streams in unit: Class: IV Flagging: G/W C- Type: HC or MM

Buffer (RMA): none Buffer (RAW): no review needed

Protection: Category C

 GEOLOGY/KARST:

No Concerns

 HERITAGE RESOURCES:

This unit was investigated per the third amended interagency Programmatic Agreement (PA) for historic properties. As 

specified by the PA, any potential adverse effect on historic properties (if any) was mitigated and portions of the Area of 

Potential Effect will be monitored by a qualified heritage specialist during and/or after actual ground disturbance.

 SCENERY:

The Scenic Integrity Objective (SIO) for this unit is Very Low . It is in Timber Production LUD and is considered Not Seen. 

There are no scenery resource concerns.

 RECREATION:

Harvest activities in this unit would be visible to recreationists using the existing road. Recreationists may also encounter 

logging traffic on the road. Harvest in this unit would be consistent with the applicable LUD (Timber Production) and would 

not change existing ROS settings. Harvest has occurred along the road system in the recent past (less than 30 years).

 SOILS/WETLANDS:

Slopes range from 5 to 30%. There are intermittent wetlands throughout the unit. The soils and wetlands are suitable for 

shovel yarding. Shovel yarding should follow BMPs 12.5, 13.2 and 13.9. Specifically, the shovel operator should avoid the 

small non-forested areas of the unit to prevent rutting. Slopes over 25% gradient may not be suitable for shovel yarding 

under some soil moisture conditions. Use care when approving shovel yarding on slopes over 25% gradient. Avoid track 

slippage and rutting.

An existing road is located through this unit and there are no new roads proposed.

 WILDLIFE:

Includes average snow deer winter range (southern 2/3 of unit). Legacy standard and guideline applies in this VCU; however 

there are no requirements for this unit because it is less than 20 acres. Wolf sign observed in unit.

Alternative 4: Unit dropped because location coincides with the biologically preferred small OGR.
3013150

3013155

3013156

2

2.1R

3.1R

3

2

3.1R.2L

3.1R.1L

6

3

LAKE 1

7

3.1R

4

5

5

5

A5

2005

1991

2005

1991

2005

48

49

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 048 Alternative 2 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Partial Cut

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

597.2

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt2.mxd 14 July 2012

RR

SR
3013150

3013155

3013156

2

2.1R

3.1R

3

2

3.1R.2L

3.1R.1L

6

3

LAKE 1

7

3.1R

4

5

5

5

A5

2005

1991

2005

1991

2005

48

49

420

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 048 Alternative 3 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

597.2

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt3.mxd 14 July 2012

RR

SR
3013150

3013155

2

2.1R

3.1R

3

2

3.1R.2L

3.1R.1L

6

3

LAKE 1

7

3.1R

4

5

5

5

A5

2005

1991

2005

1991

2005

48

49

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 048 Alternative 5 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Sytematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

597.2

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Unit 49

Total Unit

Acres:

54.9 Prescription: Clearcut

VCU

Number:

597.

2

Harvest

System:

Shovel, 

Helicopter

Net Harvest

Volume

(MBF):

1,067

LUD:

Modified Landscape

 SILVICULTURE:

Existing Conditions: Unit 49 is an over-mature moderate to high defect old-growth stand. Damages and defects are moderate 

for all species but higher in the western hemlock. Windthrow risk is moderate. No past harvest areas are adjacent to this unit.

Silvicultural Objective/Desired Condition: The desired condition for this stand is a highly productive, healthy, windfirm stand 

grown for timber management that retains residual trees as needed to meet standards and guides or other objectives. 

Silvicultural Prescription: Even-age Management 

This stand is being recommended for harvest at this time because it is not expected to obtain the desired condition given the 

current growth trajectory. This stand is mature to over-mature with moderate stem decay and defect resulting in a situation 

where stand growth is being offset by decay. Even-aged clear cutting is being prescribed to preclude or minimize the risk of 

windthrow post harvest, promote natural regeneration by opening up the canopy, and minimize defect and disease in the 

future stand to the maximum extent possible. 

The legacy standard and guide applies in this VCU. This requires that approximately 25 acres of productive old growth 

representative of the overall composition of the planned harvest area be maintained indefinitely. The required legacy 

structure is planned to coincide with areas along and between riparian corridors to block up POG and wolf habitat. Mapped 

legacy equals about 27 acres. Any adjustments to the planned unit during implementation must consider the planned 

acreage of legacy.

 TIMBER/LOGGING:

Alternatives 2, 3: This unit is planned for shovel yarding. Shovel settings are planned for yarding to the proposed temporary 

road, and proposed NFS road 3013154. 

Alternative 5: This unit is planned for helicopter yarding to a landing on existing NFS road 3013155.

 ENGINEERING/ROADS:

In Alternatives 2 and 3 the unit is accessed by reconstructed existing NFS road 3013154, proposed NFS road 3013154, and 

a proposed temporary road. Reconstruction of the existing NFS road 3013154 totals 2,800 feet, construction of the proposed 

extension of NFS road 3013154 totals 4,700 feet, and construction of the proposed temporary road totals 1,200 feet, as 

displayed on the unit card. See corresponding road card for proposed NFS road and reconstructed NFS road details.

 BOTANY:

One lesser round-leaved orchid (sensitive plant) population completely in legacy (4 plants), and one in harvest area (6 

plants). Habitat for population near proposed roads would be harvested, while habitat for population near unit edge would be 

preserved in legacy.

 FISHERIES:

Unit

Number 49 Alternatives 2, 3, 5

Summary of Concerns, Responses, BMPs and Mitigation

 INVASIVE SPECIES:

No Concerns
Unit 49

Streams are tributaries to Goose Creek and Angel Lake. 

Stream#: 1 Class: I Flagging: B/W C- Type: LCM

Concerns: blowdown

Buffer (RMA): Class I for LCM greater of 100 feet, flood plain, riparian vegetation or soils, or riparian associated wetland 

fens. 

Alternatives: 2, 3, and 5 Buffer (RAW): no review needed 

Protection: Category A 

Stream#: 1.10L Class: I, IV Flagging: B/W, G/W C- Type: PAB

Concerns: blowdown

Buffer (RMA): Class I for PAB greater of 100 feet, flood plain, riparian vegetation or soils, or riparian associated wetland 

fens. Class IV for PAB none.

Alternatives: 2, 3, and 5 Buffer (RAW): Will be identified by IDT during layout.

Protection: Category A and C

Stream#: 1.10L.1R Class: I, II, IV Flagging: B/W, G/W C- Type: PAO, MMO

Concerns: blowdown 

Buffer (RMA): Class I greater of 100 feet (PAO) and 120 feet (MMO), flood plain, riparian vegetation or soils, or riparian 

associated wetland fens. Class IV for MMO none.

Alternatives: 2, 3, and 5 Buffer (RAW): Will be identified by IDT during layout.

Protection: Category A and C 

Stream#: 2 Class: II, IV Flagging: B/W, G/W C- Type: MMO

Concerns: blowdown

Buffer (RMA): Class II for MMO greater of 120 feet, flood plain, riparian vegetation or soils, or riparian associated wetland 

fens. Class IV for MMO none.

Alternatives: 2, 3, and 5 Buffer (RAW): no review needed 

Protection: Category A and C 

Stream#: 3 Class: I Flagging: B/W C- Type: MMS, HCV

Concerns: blowdown

Buffer (RMA): Class I for MMS greater of 120 feet, flood plain, riparian vegetation or soils, or riparian associated wetland 

fens. Class I for HCV greater of 100 feet or to the top of the side-slope break.

Alternatives: 2, 3, and 5 Buffer (RAW): no review needed 

Protection: Category A 

Stream#:.3.1R Class: I, II, IV Flagging: B/W, G/W C- Type: MMO

Concerns: blowdown 

Buffer (RMA): Class I and II for MMO greater of 120 feet, flood plain, riparian vegetation or soils, or riparian associated 

wetland fens. Class IV for MMO none. 

Alternatives: 2, 3, and 5 Buffer (RAW): no review needed 

Protection: Category A and C 

Stream#: 4 Class: I, IV Flagging: B/W, G/W C- Type: PAS, PAO

Concerns: none

Buffer (RMA): Class I for PAS greater of 100 feet, flood plain, riparian vegetation or soils, or riparian associated wetland 

fens. Class IV for PAO none. 

Alternatives: 2, 3, and 5 Buffer (RAW): no review needed

Protection: Category A and C

Stream#: 5 Class: I Flagging: B/W C- Type: PAB, PAS 

Concerns: none

Buffer (RMA): Class I for PAB and PAS greater of 100 feet, flood plain, riparian vegetation or soils, or riparian associated 

wetland fens. 

Alternatives: 2, 3, and 5 Buffer (RAW): no review needed

Protection: Category A 

Stream#: Lake-1 Class: I Flagging: B/W C- Type: L

Concerns: blowdown and steep side-slopes.

Buffer (RMA): Class I for Lake-1 greater of 100 horizontal feet or to the extent of the flood plain, riparian vegetation or soils, 

riparian associated wetland fens, or one site-potential tree height. 

Alternatives: 2, 3, and 5 Buffer (RAW): no review needed

Protection: Category A 
Unit 49

Stream#: Lake-A1 (Angel Lake) Class: I Flagging: B/W C- Type: L

Concerns: none

Buffer (RMA): Class I for Lake-1 greater of 100 horizontal feet or to the extent of the flood plain, riparian vegetation or soils, 

riparian associated wetland fens, or one site-potential tree height. 

Alternatives: 2, 3, and 5 Buffer (RAW): Will be identified by IDT during layout

Protection: Category A 

All other streams in unit: Class: IV Flagging: G/W C- Type: HC or MM

Buffer (RMA): none Buffer (RAW): no review needed

Protection: Category C

Temporary roads for Unit 49: Alternatives 2, 3, and 5 -- No known stream crossings. If any stream crossings are found, 

crossings structures and locations will be approved by USFS, in consultation with fisheries biologist or hydrologist, prior to 

construction (BMP 14.17). During construction of temporary roads implement BMPs 12.17, 13.10, 13.11, 13.16, 14.3, and 

14.5.

 GEOLOGY/KARST:

No Concerns

 HERITAGE RESOURCES:

This unit was investigated per the third amended interagency Programmatic Agreement (PA) for historic properties. As 

specified by the PA, any potential adverse effect on historic properties (if any) was mitigated and portions of the Area of 

Potential Effect will be monitored by a qualified heritage specialist during and/or after actual ground disturbance.

 SCENERY:

The Scenic Integrity Objective (SIO) for this unit is Very Low . It is in Timber Production LUD and is considered Not Seen. 

There are no scenery resource concerns.

 RECREATION:

Unit is adjacent to Angel Lake, which is an area that has received some, very limited outfitter/guide use in the past (3 clients 

from 2004 to 2008). Dispersed fishing also takes place at Angel Lake. Although Not Seen (see Scenery above), harvest in 

this area could be visible to outfitter/guide clients at Angel Lake. The Forest Service has not developed an access trail to the 

lake and it is unlikely that the user developed trail would be affected by the harvest activities.

 SOILS/WETLANDS:

Slopes range from 5 to 50%. There is a small rock outcrop located in the middle of the northern section that has slopes of 

35% to 50% that can be operated around with a shovel. There are intermittent wetlands throughout the unit. The soils and 

wetlands are suitable for minimum partial yarding or shovel yarding. All logging systems should follow BMPs 12.5, 13.2 and 

13.9. Specifically, the shovel operator should avoid the small non-forested areas of the unit to prevent rutting. Slopes over 

25% gradient may not be suitable for shovel yarding under some soil moisture conditions. Use care when approving shovel 

yarding on slopes over 25% gradient.

 WILDLIFE:

Includes average snow deer winter range (all of unit except northern lobe), some of which is also deep snow marten 

habitat/deer winter range (central portion of unit and southwestern lobe). Legacy standard and guideline applies in this VCU; 

Legacy acres cover some average snow deer winter range and deep snow marten habitat/deer winter range. Wolf sign 

observed in unit.

Alternative 4: Unit dropped because location coincides with the biologically preferred small OGR.
3013155

3013155

3013150

3013154

5

3.1R

4

1

1 .10L

5

5

1

3.1R

2

1.1 0L

2.1R

2

3.1R.2L

3.1R.1L

LAKE A1

1.10L.1 R

6

3

LAKE 1

7

3

1989

1989

1989

2005

1989

1989

2005

2005

1991

1991

49

48

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 049 Alternative 2 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Partial Cut

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

597.2

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3013155

3013155

3013150

3013154

5

3.1R

4

1

1 .10L

5

5

1

3.1R

2

1.1 0L

2.1R

2

3.1R.2L

3.1R.1L

LAKE A1

1.10L.1 R

6

3

LAKE 1

7

3

1989

1989

1989

2005

1989

1989

2005

2005

1991

1991

49

48

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 049 Alternative 3 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

597.2

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3013155

3013150

3013155

3

5

3.1R

4

1

1 .10L

5

5

1

3.1R

2

1.1 0L

2.1R

2

3.1R.2L

3.1R.1L

LAKE A1

1.10L.1 R

6

3

LAKE 1

7

1989

1989

1989

2005

1989

1989

2005

1991

1991

2005

49

48

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 049 Alternative 5 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Sytematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

597.2

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Unit 50

Total Unit

Acres:

24.9 Prescription: Clearcut

VCU

Number:

597.

2

Harvest

System:

Cable, Shovel

Net Harvest

Volume

(MBF):

615

LUD:

Timber Production

 SILVICULTURE:

Existing Conditions: Unit 50 consists of three drumlin ridges. The timber is western hemlock and western redcedar with old 

growth to uneven-age stand structure. The western hemlock overall is high defect with heavy to moderate mistletoe. 

Windthrow risk is moderate. A 2005 origin even-age harvest is across the large stream buffer along the north boundary. This 

past harvest does not currently meet NFMA green-up requirements. It is however separate from the proposed unit by the 

width of the buffer as well as having the combined area of this past harvest and the proposed unit being less than 100 acres. 

Silvicultural Objective/Desired Condition: The desired condition for this stand is a highly productive, healthy, windfirm stand 

grown for timber management that retains residual trees as needed to meet standards and guides or other objectives. 

Silvicultural Prescription: Even-age Management 

This stand is being recommended for harvest at this time because it is not expected to obtain the desired condition given the 

current growth trajectory. This stand is mature to over-mature with moderate to high stem decay and defect resulting in a 

situation where stand growth is being offset by decay. Even-aged clear cutting is being prescribed to preclude or minimize 

the risk of windthrow post harvest, promote natural regeneration by opening up the canopy, and minimize defect and disease 

in the future stand to the maximum extent possible. 

The legacy standard and guide applies in this VCU; however, this unit consists of three separate openings that are each well 

less than 20 acres and therefore do not require legacy retention.

 TIMBER/LOGGING:

This unit is planned for a combination of cable and shovel yarding. Shovel settings are planned for yarding to the proposed 

NFS road 3013156. Cable settings are planned for uphill yarding to landings on the proposed NFS road 3013156.

 ENGINEERING/ROADS:

Unit is accessed by a proposed NFS road 3013156, totaling 4,800 feet, as displayed on the unit card. Approximately 2,100 

feet of this road is constructed across decommissioned road bed.. See road card for proposed NFS road details.

 BOTANY:

Two lesser round-leaved orchid (sensitive plant) populations in harvest area of unit. Proposed for harvest due to small 

population size (only one plant per population) and presence of a larger population not impacted just south of unit.

 FISHERIES:

Streams are tributaries to Goose Creek. Stream 2.2R characteristics do not include project-specific, field-verified, 

information.

Stream#: Lake 1 Class: I Flagging: B/W C- Type: L

Concerns: none

Buffer (RMA): Class I for Lake-1 greater of 100 feet, flood plain, riparian vegetation or soils, riparian associated wetland 

fens, or one site-potential tree height. 

Alternatives: 2 and 3 Buffer (RAW): no review needed

Protection: Category A 

Stream#: 2 Class: I Flagging: B/W C- Type: PAB, PAS, LCS, MMS, MCS

Concerns: blowdown; braiding and flooding due to beaver dams 

Buffer (RMA): Class I - greater of 100 feet (PAB and PAS) and 120 feet (MMS), flood plain, riparian vegetation or soils, or 

riparian associated wetland fens. Class I for LCS and MCS greater of 100 feet or to the top of the side-slope break. 

Unit

Number 50 Alternatives 2, 3

Summary of Concerns, Responses, BMPs and Mitigation

 INVASIVE SPECIES:

No Concerns
Unit 50

Alternatives: 2 and 3 Buffer (RAW): Will be identified by IDT during layout.

Protection: Category A 

Stream#: 2.2R Class: I Flagging: B/W C- Type: MCO, FPS

Concerns: none known 

Buffer (RMA): Class I for MCO greater of 100 feet or to the top of the side-slope break. Class I for FPS greater of 130 feet, 

flood plain, riparian vegetation or soils, or riparian associated wetland fens. 

Alternatives: 2 and 3 Buffer (RAW): no review needed

Protection: Category A 

Stream#: 2.3R Class: I Flagging: B/W C- Type: PAB

Concerns: none 

Buffer (RMA): Class I for PAB greater of 100 feet, flood plain, riparian vegetation or soils, or riparian associated wetland 

fens. 

Alternatives: 2 and 3 Buffer (RAW): no review needed

Protection: Category A

 GEOLOGY/KARST:

No Concerns

 HERITAGE RESOURCES:

This unit was investigated per the third amended interagency Programmatic Agreement (PA) for historic properties. As 

specified by the PA, any potential adverse effect on historic properties (if any) was mitigated and portions of the Area of 

Potential Effect will be monitored by a qualified heritage specialist during and/or after actual ground disturbance.

 SCENERY:

The Scenic Integrity Objective (SIO) for this unit is Very Low . It is in Timber Production LUD and is considered Not Seen. 

There are no scenery resource concerns.

 RECREATION:

No Concerns

 SOILS/WETLANDS:

Slopes range from 5 to 20%. There are small forested wetlands areas. Most of the unit is upland. The soils and wetlands are 

suitable for partial suspension cable yarding or shovel yarding. All logging systems should follow BMPs 12.5, 13.2 and 13.9. 

Specifically, the shovel operator should avoid the small non-forested areas of the unit to prevent rutting. Slopes over 25% 

gradient may not be suitable for shovel yarding under some soil moisture conditions. Use care when approving shovel 

yarding on slopes over 25% gradient. Avoid track slippage and rutting.

A proposed system road will impact about 1 acre of forested wetland within the unit. Road No. 3013155 is located south of 

the unit and would require less impact but was not used to avoid two stream crossings (BMP 12.5, 13.2).

 WILDLIFE:

Includes average snow deer winter range (western half of each setting). Legacy standard and guideline applies in this VCU, 

however there are no requirements for this unit because all settings are less than 20 acre openings.

Alternative 4: Unit dropped because location coincides with the biologically preferred small OGR.
3013155

3013160

2030700

3013156

3013160

2

2

2

LAKE 1

2.1 0L

2.3R

2.11R

2.9R

2.3R

2

2.4R

2.2R

2.5L

2

2.12 R

1989

2010

1991

2005

1989

2005

50

50

52

53

50

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 050 Alternative 2 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Partial Cut

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

597.2

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3013155

3013160

2030700

3013156

3013160

2

2

2

LAKE 1

2.1 0L

2.3R

2.11R

2.9R

2.3R

2

2.4R

2.2R

2.5L

2

2.12 R

1989

2010

1991

2005

1989

2005

50

50

52

53

50

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 050 Alternative 3 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

597.2

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Unit 51

Total Unit

Acres:

8.3 Prescription: Clearcut

VCU

Number:

597.

2

Harvest

System:

Helicopter

Net Harvest

Volume

(MBF):

121

LUD:

Timber Production

 SILVICULTURE:

Existing Condition: Unit 51 has old-growth stand structure. In the hemlock, stem rot is moderate to high and mistletoe 

infection is light. Alaska-cedar decline is moderate to high. Defect for all species is moderate to high. Windthrow risk is 

moderate. All past harvest areas adjacent to or near this unit are adequately restocked with trees at least 5 feet tall meeting 

the NFMA requirements for no longer being considered an opening.

Silvicultural Objective/Desired Condition: The desired condition for this stand is a highly productive, healthy, windfirm stand 

grown for timber management that retains residual trees as needed to meet standards and guides or other objectives. 

Silvicultural Prescription: Even-age Management 

This stand is being recommended for harvest at this time because it is not expected to obtain the desired condition given the 

current growth trajectory. This stand is mature to over-mature with moderate to high stem decay and defect resulting in a 

situation where stand growth is being offset by decay. Even-aged clear cutting is being prescribed to preclude or minimize 

the risk of windthrow post harvest, promote natural regeneration by opening up the canopy, and minimize defect and disease 

in the future stand to the maximum extent possible. 

The legacy standard and guide applies in this VCU; however, the original opening size of this unit is smaller than 20 acres 

and therefore does not require legacy retention.

 TIMBER/LOGGING:

This unit is planned for helicopter yarding to landings on existing NFS road 3013150.

 ENGINEERING/ROADS:

No proposed road construction

 BOTANY:

No Concerns

 FISHERIES:

Streams are tributaries to Goose Creek. 

Stream#: 1 Class: III, IV Flagging: O/W, G/W C- Type: HCO

Concerns: none

Buffer (RMA): Class III for HCO to the top of the side-slope break. Class IV for HCO none.

Alternatives: 2, 3, and 5 Buffer (RAW): no review needed

Protection: Category B and C 

All other streams in unit: Class: IV Flagging: G/W C- Type: HC or MM

Buffer (RMA): none Buffer (RAW): no review needed

Protection: Category C

 GEOLOGY/KARST:

No Concerns

 HERITAGE RESOURCES:

This unit was investigated per the third amended interagency Programmatic Agreement (PA) for historic properties. As 

specified by the PA, any potential adverse effect on historic properties (if any) was mitigated and portions of the Area of 

Potential Effect will be monitored by a qualified heritage specialist during and/or after actual ground disturbance.

Unit

Number 51 Alternatives 2, 3, 5

Summary of Concerns, Responses, BMPs and Mitigation

 INVASIVE SPECIES:

No Concerns
Unit 51

 SCENERY:

The Scenic Integrity Objective (SIO) for this unit is Very Low . It is in Timber Production LUD and is considered Not Seen. 

There are no scenery resource concerns.

 RECREATION:

No Concerns

 SOILS/WETLANDS:

Slopes range from about 10% to about 63%. Based on GIS analysis, forested wetland covers the entire unit (BMP 12.5). A 

minimum of partial suspension would meet soil and wetland resource concerns (BMPs 12.5, 13.5, and 13.9).

 WILDLIFE:

Unit includes average snow deer winter range (entire unit). Legacy standard and guideline applies in this VCU, however 

there are no requirements for this unit because the original opening is less than 20 acres. West end of unit is adjacent to a 

small OGR.

Alternative 4: Unit dropped because location coincides with the biologically preferred small OGR.
LAKE 

A1

LAKE A1 3013150

3013160

2

2.9R

A6

1.1L

1.12R.1L

1

2

2.11R

2.14R

2.10L

2.13L

2.12R

2

A5

A 2

1

1.1R

A1

A4

1991

1994

1991

1989

1991

1992

1994

51

52

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 051 Alternative 2 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Partial Cut

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

597.2

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt2.mxd 14 July 2012

RR

SR
LAKE 

A1

LAKE A1 3013150

3013160

2

2.9R

A6

1.1L

1.12R.1L

1

2

2.11R

2.14R

2.10L

2.13L

2.12R

2

A5

A 2

1

1.1R

A1

A4

1991

1994

1991

1989

1991

1992

1994

51

52

420

423

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 051 Alternative 3 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

597.2

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt3.mxd 14 July 2012

RR

SR
LAKE 

A1

LAKE A1 3013150

3013160

2

2.9R

A6

1.1L

1.12R.1L

1

2

2.11R

2.14R

2.10L

2.13L

2.12R

2

A5

A 2

1

1.1R

A1

A4

1991

1994

1991

1989

1991

1992

1994

51

52

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 051 Alternative 5 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Sytematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

597.2

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt5.mxd 14 July 2012

RR

SR
Unit 52

Total Unit

Acres:

18.8 Prescription: Clearcut

VCU

Number:

597.

2

Harvest

System:

Cable, 

Helicopter

Net Harvest

Volume

(MBF):

466

LUD:

Timber Production

 SILVICULTURE:

Existing Condition: Unit 52 has old-growth stand structure. In the western hemlock stem decay is moderate to heavy and the 

incidence of mistletoe is light. Cedar decline is moderate to high throughout the stand. Defect is moderate to high for all 

species. Windthrow risk is moderate. All past harvest areas adjacent to or near this unit are adequately restocked with trees 

at least 5 feet tall meeting the NFMA requirements for no longer being considered an opening.

Silvicultural Objective/Desired Condition: The desired condition for this stand is a highly productive, healthy, windfirm stand 

grown for timber management that retains residual trees as needed to meet standards and guides or other objectives. 

Silvicultural Prescription: Even-age Management 

This stand is being recommended for harvest at this time because it is not expected to obtain the desired condition given the 

current growth trajectory. This stand is over-mature with moderate to high stem decay and defect resulting in a situation 

where stand growth is being offset or exceeded by decay. Even-aged clear cutting is being prescribed to preclude or 

minimize the risk of windthrow post harvest, promote natural regeneration by opening up the canopy, and minimize defect 

and disease in the future stand to the maximum extent possible. 

The legacy standard and guide applies in this VCU. The original opening size for this unit is, however, less than 20 acres as 

planned and as a result does not require any legacy set-aside.

 TIMBER/LOGGING:

This unit is planned for a combination of helicopter and cable yarding. Cable settings are planned for uphill yarding to 

landings on the proposed temporary road and existing NFS road 3013150. Unit may need to be expanded to the west, to 

make room for guyline anchors. Helicopter settings are planned for yarding to the proposed temporary road.

 ENGINEERING/ROADS:

Unit is accessed by a proposed temporary road, totaling 500 feet, as displayed on the unit card.

 BOTANY:

No Concerns

 FISHERIES:

Streams are tributaries to Goose Creek. 

Stream#: 2 Class: II, III, IV Flagging: B/W, O/W, G/W C- Type: HCM, MMO

Concerns: blowdown

Buffer (RMA): Class II for HCM greater of 100 feet or the top of the side-slope break. Class III for HCM the top of the sideslope break. Class IV for MMO none

Alternatives: 2, 3, and 5 Buffer (RAW): Will be identified by IDT during layout.

Protection: Category A, B, and C 

Stream#: 2.12R Class: II, IV Flagging: B/W, G/W C- Type: HCO

Concerns: none

Buffer (RMA): Class II for HCO greater of 100 feet or the top of the side-slope break. Class IV for HCO none.

Alternatives: 2, 3, and 5 Buffer (RAW): no review needed

Protection: Category A and C

All other streams in unit: Class: IV Flagging: G/W C- Type: HC

Buffer (RMA): none Buffer (RAW): no review needed

Unit

Number 52 Alternatives 2, 3, 5

Summary of Concerns, Responses, BMPs and Mitigation

 INVASIVE SPECIES:

No Concerns
Unit 52

Protection: Category C 

Temporary roads for Unit 51: Alternatives 2, 3, and 5 -- No known stream crossings. The temporary roads have not been 

field verified and will be surveyed before implementation. If any stream crossings are found, crossings structures and 

locations will be approved by USFS, in consultation with fisheries biologist or hydrologist, prior to construction (BMP 14.17). 

During construction of temporary roads implement BMPs 12.17, 13.10, 13.11, 13.16, 14.3, and 14.5.

 GEOLOGY/KARST:

No Concerns

 HERITAGE RESOURCES:

This unit was investigated per the third amended interagency Programmatic Agreement (PA) for historic properties. As 

specified by the PA, any potential adverse effect on historic properties (if any) was mitigated and portions of the Area of 

Potential Effect will be monitored by a qualified heritage specialist during and/or after actual ground disturbance.

 SCENERY:

The Scenic Integrity Objective (SIO) for this unit is Very Low . It is in Timber Production LUD and is considered Not Seen. 

There are no scenery resource concerns.

 RECREATION:

Harvest activities in this unit would be visible to recreationists using the existing road. Recreationists may also encounter 

logging traffic on the road. Harvest in this unit would be consistent with the applicable LUD (Timber Production) and would 

not change existing ROS settings. Harvest has occurred along the road system in the recent past (less than 30 years).

 SOILS/WETLANDS:

Slopes range from 30 to 80% . There are approximately 3 acres of slopes greater than 72%. These steep slopes are suitable 

for harvest with partial suspension requirements. Forested wetlands are located intermittently in the lower elevations of the 

unit. A minimum of partial suspension would meet soil and wetland resource concerns (BMPs 12.5, 13.5, and 13.9)

The proposed temporary road will impact about 1/2 acre of forested wetland in the unit, access in this location was necessary 

to access the interior of the unit and avoid streams along the southern unit boundary (BMP 12.5, 13.2). Provide adequate 

cross drainage, remove drainage structures, and close road after harvest (BMP 14.9).

 WILDLIFE:

Unit includes average snow deer winter range (all of unit except eastern edge), some of which is also deep snow deer winter 

range/marten habitat (southern 1/3 of unit). Legacy standard and guideline applies in this VCU, however there are no 

requirements for this unit because the original planned opening is less than 20 acres. 

Alternative 4: Unit dropped because location coincides with the biologically preferred small OGR.
3013160

3013150

3013160

1.12R.1L

2.12R

2

2

1

2.7L

1.1R

2

2 .5L

1

2.8L

2

2

2.3R

1.1L

A1

1

2

2.11R

2.14R

2.10L

2.13L

2.9R

2.3R

1994

1991

1992

1994

1991

51

52

53

54

50

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 052 Alternative 2 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Partial Cut

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

597.2

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt2.mxd 14 July 2012

RR

SR
3013150

3013160

3013160

1.12R.1L

2.3R

2.12R

2

2

1

2.7L

1.1R

2

2 .5L

1

2.8L

2

2

2.3R

1.1L

A1

1

2

2.11R

2.14R

2.10L

2.13L

2.9R

1994

1991

1992

1994

1991

51

52

53

54

420

50

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 052 Alternative 3 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

597.2

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt3.mxd 14 July 2012

RR

SR
3013160

3013150

3013160

1

2

2

1

2.7L

1.1R

2

2 .5L

1

2.8L

2

2

2.3R

1.1L

1.12R.1L

A1

2

2.11R

2.14R

2.10L

2.13L

2.9R

2.3R

2.12R

1994

1991

1992

1994

1991

52

53

54

51

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 052 Alternative 5 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Sytematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

597.2

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt5.mxd 14 July 2012

RR

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Unit 53

Total Unit

Acres:

11.8 Prescription: Clearcut

VCU

Number:

597.

2

Harvest

System:

Shovel

Net Harvest

Volume

(MBF):

200

LUD:

Timber Production

 SILVICULTURE:

Existing Condition: This unit has old-growth stand structure with a mature overstory of western hemlock, western redcedar 

and scattered Alaska-cedar and Sitka spruce. The lower elevations have quality, lower defect western redcedar in the middle 

diameter classes. The western hemlock has moderate defect and light mistletoe infection. Windthrow risk is moderate. All 

past harvest areas adjacent to or near this unit are adequately restocked with trees at least 5 feet tall meeting the NFMA 

requirements for no longer being considered an opening.

Silvicultural Objective/Desired Condition: The desired condition for this stand is a highly productive, healthy, windfirm stand 

grown for timber management that retains residual trees as needed to meet standards and guides or other objectives. 

Silvicultural Prescription: Even-age Management 

This stand is being recommended for harvest at this time because it is not expected to obtain the desired condition given the 

current growth trajectory. This stand is mature to over-mature with moderate decay and defect resulting in a situation where 

stand growth is being offset by decay. Even-aged clear cutting is being prescribed to preclude or minimize the risk of 

windthrow post harvest, promote natural regeneration by opening up the canopy, and minimize defect and disease in the 

future stand to the maximum extent possible. 

The legacy standard and guide applies in this VCU. The original planned unit is however less than 20 acres and, as a result, 

does not require any legacy set-aside.

 TIMBER/LOGGING:

This unit is planned for shovel yarding to the proposed temporary road.

 ENGINEERING/ROADS:

Unit is accessed by a proposed temporary road, totaling 400 feet, as displayed on the unit card. Unit is also accessed by 

proposed NFS road 3013160, totaling 700 feet, as displayed on the unit card. See road card for proposed NFS road details.

 BOTANY:

One lesser round-leaved orchid (sensitive species) population in harvest area of unit. Proposed for harvest due to small 

population size (1 plant) and presence of additional population nearby in non-timber areas.

 FISHERIES:

Streams are tributaries to Goose Creek. 

Stream#: 2 Class: I, II Flagging: B/W C- Type: MMS, HCM

Concerns: blowdown

Buffer (RMA): Class I for MMS greater of 120 feet, flood plain, riparian vegetation or soils, or riparian associated wetland 

fens. Class I and II for HCM greater of 100 feet or to the top of the side-slope break. 

Alternatives: 2, 3, and 5 Buffer (RAW): no review needed

Protection: Category A 

Stream#: 2.7L Class: II Flagging: B/W C- Type: HCO

Concerns: blowdown

Buffer (RMA): Class II for HCO greater of 100 feet or to the top of the side-slope break.

Alternatives: 2, 3, and 5 Buffer (RAW): no review needed

Protection: Category A 

All other streams in unit: Class: IV Flagging: G/W C- Type: HC

Unit

Number 53 Alternatives 2, 3, 5

Summary of Concerns, Responses, BMPs and Mitigation

 INVASIVE SPECIES:

No Concerns
Unit 53

Buffer (RMA): none Buffer (RAW): no review needed

Protection: Category C 

Temporary roads for Unit 53: Alternatives 2, 3, and 5 -- No known stream crossings. The temporary roads have not been 

field verified and will be surveyed before implementation. If any stream crossings are found, crossings structures and 

locations will be approved by USFS, in consultation with fisheries biologist or hydrologist, prior to construction (BMP 14.17). 

During construction of temporary roads implement BMPs 12.17, 13.10, 13.11, 13.16, 14.3, and 14.5.

 GEOLOGY/KARST:

No Concerns

 HERITAGE RESOURCES:

This unit was investigated per the third amended interagency Programmatic Agreement (PA) for historic properties. As 

specified by the PA, any potential adverse effect on historic properties (if any) was mitigated and portions of the Area of 

Potential Effect will be monitored by a qualified heritage specialist during and/or after actual ground disturbance.

 SCENERY:

The Scenic Integrity Objective (SIO) for this unit is Very Low . It is in Timber Production LUD and is considered Not Seen. 

There are no scenery resource concerns.

 RECREATION:

No Concerns

 SOILS/WETLANDS:

Slopes range from flat to about 36 percent. The steep slopes are short pitches that can be worked around. Unit avoids moss 

wetlands located to the northeast. The soils and wetlands are suitable for shovel yarding. Shovel yarding should follow BMPs 

12.5, 13.2 and 13.9. Specifically, the shovel operator should avoid the small non-forested areas of the unit to prevent rutting. 

Slopes over 25% gradient may not be suitable for shovel yarding under some soil moisture conditions. Use care when 

approving shovel yarding on slopes over 25% gradient. 

The proposed temporary road does not traverse wetlands.

 WILDLIFE:

Unit includes average snow deer winter range (southwestern corner). Legacy standard and guideline applies in this VCU, 

however there are no requirements for this unit because the original planned unit is less than 20 acres.

Alternative 4: Unit dropped because location coincides with the biologically preferred small OGR.
3013150

3013160

3013150

3013160

3013156

2.12R

2

2

2

2.7L

1.1R

1

2

A1

2.8L

LAKE 1

1.2R

2

2

2.3R

1.12R.1L

2.11R

2.14R

2.10L

2.13L

2.9R

2.3R

2.4R

2.5L

2

1992

1994

1991

1994

1991

50

50

52

53

54

50

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 053 Alternative 2 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Partial Cut

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

597.2

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt2.mxd 14 July 2012

RR

SR
3013150

3013160

3013150

3013160

3013156

2.12R

2

2

2

2.7L

1.1R

1

2

A1

2.8L

LAKE 1

1.2R

2

2

2.3R

1.12R.1L

2.11R

2.14R

2.10L

2.13L

2.9R

2.3R

2.4R

2.5L

2

1992

1994

1991

1994

1991

50

50

52

53

54

50

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 053 Alternative 3 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

597.2

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt3.mxd 14 July 2012

RR

SR
3013150

3013150

3013160

3013160

2

2

2

2.7L

1.1R

2

A1

2.8L

LAKE 1

1.2R

2

2

2.3R

1.12R.1L

2.11R

2.14R

2.10L

2.13L

2.9R

2.3R

2.4R

2.5L

2

2.12R

1

1994

1991

1991

1994

1992

53

54

52

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 053 Alternative 5 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Sytematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

597.2

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt5.mxd 14 July 2012

RR

SR
Unit 54

Total Unit

Acres:

31.9 Prescription: Clearcut

VCU

Number:

597.

2

Harvest

System:

Cable

Net Harvest

Volume

(MBF):

550

LUD:

Timber Production

 SILVICULTURE:

Existing Condition: Unit 54 has old-growth stand structure with a mature to over-mature western hemlock, western redcedar, 

Alaska-cedar and Sitka spruce overstory. The western hemlock in the stand as well as the larger western redcedar have 

heavy defect with many dead tops. There are numerous dead Alaska-cedar, however it was not evident that decline was the 

agent. Windthrow risk is moderate. All past harvest areas adjacent to or near this unit are adequately restocked with trees at 

least 5 feet tall meeting the NFMA requirements for no longer being considered an opening.

Silvicultural Objective/Desired Condition: The desired condition for this stand is a highly productive, healthy, windfirm stand 

grown for timber management that retains residual trees as needed to meet standards and guides or other objectives. 

Silvicultural Prescription: Even-age Management 

This stand is being recommended for harvest at this time because it is not expected to obtain the desired condition given the 

current growth trajectory. This stand is over-mature with heavy stem decay and defect resulting in a situation where stand 

growth is being offset or exceeded by decay. Even-aged clear cutting is being prescribed to preclude or minimize the risk of 

windthrow post harvest, promote natural regeneration by opening up the canopy, and minimize defect and disease in the 

future stand to the maximum extent possible. 

The legacy standard and guide applies in this VCU. This requires that approximately 14 acres of productive old growth 

representative of the overall composition of the planned harvest area be maintained indefinitely. The required legacy 

structure is planned to coincide with areas of unsuitable soils plus areas of higher value wildlife habitat that are built off of 

unstable soil areas and TTRA buffers to provide larger blocks of legacy and connectivity across unit. The mapped legacy 

area totals 14 acres. Any adjustments to the planned unit during implementation must consider the legacy acreage 

requirement.

 TIMBER/LOGGING:

This unit is planned for uphill and downhill cable yarding to landings on the existing NFS road 3013150.

 ENGINEERING/ROADS:

No proposed road construction.

 BOTANY:

No Concerns

 FISHERIES:

Streams are tributaries to Goose Creek. 

Stream#: 1 Class: II Flagging: B/W C- Type: HCLw, HCM, MCS

Concerns: none

Buffer (RMA): Class II for HCLw, HCM and MCS greater of 100 feet or to the top of the side-slope break.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed.

Protection: Category A 

Stream#: 1.2R Class: II, III, IV Flagging: B/W, O/W, G/W C- Type: HCM, HCO

Concerns: none

Buffer (RMA): Class II for HCM greater of 100 feet or to the top of the side-slope break. Class III for HCM to the top of the 

side-slope break. Class IV for HCO none. 

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed

Protection: Category A, B, and C 

Unit

Number 54 Alternatives 2, 3, 4, 5

Summary of Concerns, Responses, BMPs and Mitigation

 INVASIVE SPECIES:

No Concerns
Unit 54

All other streams in unit: Class: IV Flagging: G/W C- Type: HC or MM

Buffer (RMA): none Buffer (RAW): no review needed.

Protection: Category C

 GEOLOGY/KARST:

No Concerns

 HERITAGE RESOURCES:

This unit was investigated per the third amended interagency Programmatic Agreement (PA) for historic properties. As 

specified by the PA, any potential adverse effect on historic properties (if any) was mitigated and portions of the Area of 

Potential Effect will be monitored by a qualified heritage specialist during and/or after actual ground disturbance.

 SCENERY:

The Scenic Integrity Objective (SIO) for this unit is Very Low . It is in Timber Production LUD and is considered Not Seen. 

There are no scenery resource concerns.

 RECREATION:

Harvest activities in this unit would be visible to recreationists using the existing road. Recreationists may also encounter 

logging traffic on the road. Harvest in this unit would be consistent with the applicable LUD (Timber Production) and would 

not change existing ROS settings. Harvest has occurred along the road system in the recent past (less than 30 years).

 SOILS/WETLANDS:

Slopes range from about 45 to more than 75%. There are approximately 10 acres of slopes greater than 72% associated with 

bedrock outcrops. These steep slopes are suitable for harvest with partial suspension requirements. A minimum of partial 

suspension would meet soil and wetland resource concerns (BMPs 12.5, 13.5, and 13.9). There is a 2-acre drainage area 

near the center of the unit that is deferred from harvest due to erosion and sedimentation concerns.

There are approximately 11 acres of forested wetland in the southwestern third of the unit (BMP12.5). Existing roads will be 

utilized to avoid wetland impacts.

 WILDLIFE:

Unit includes average snow deer winter range (all of unit except northern edge), some of which is also deep snow marten 

habitat/deer winter range (northeastern end of unit). Legacy standard and guideline applies in this VCU; Legacy acres cover 

a portion of deer winter range/marten habitat.

Old-growth Reserve (OGR) Boundary

Alternatives 2, 3, and 5: Unit is not adjacent to an OGR.

Alternative 4: Adopts Interagency OGR which is adjacent to the eastern boundary of unit.
3013150

2

2.14R

2.1

2.8L

0L

3

2

2

2.13L

1.2R

2.1R

A1

1

1

2

2

5

4

2

2.7L

1.1R

1992

1992

1992

52 53

54

55

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 054 Alternative 2 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Partial Cut

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

597.2

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt2.mxd 14 July 2012

RR

SR
3013150

2

2.14R

2.1

2.8L

0L

3

2

2

2.13L

1.2R

2.1R

A1

1

1

2

2

5

4

2

2.7L

1.1R

1992

1992

1992

52 53

54

55

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 054 Alternative 3 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

597.2

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt3.mxd 14 July 2012

RR

SR
3013150

2

2.14R

2.1

2.8L

0L

3

2

2

2.13L

1.2R

2.1R

A1

1

1

2

2

5

4

2

2.7L

1.1R

1992

1992

1992

54

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 054 Alternative 4 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

597.2

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt4.mxd 20 March 2012

RR

SR
3013150

2

2.14R

2.1

2.8L

0L

3

2

2

2.13L

1.2R

2.1R

A1

1

1

2

2

5

4

2

2.7L

1.1R

1992

1992

1992

52 53

54

55

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 054 Alternative 5 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Sytematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

597.2

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt5.mxd 14 July 2012

RR

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Unit 55

Total Unit

Acres:

16.7 Prescription: Clearcut

VCU

Number:

597.

2

Harvest

System:

Cable

Net Harvest

Volume

(MBF):

363

LUD:

Timber Production

 SILVICULTURE:

Existing Condition: Unit 55 has old-growth stand structure. Defect is moderate to high for all species with larger trees being 

more defective. Numerous dead tops were noted in the larger hemlock and redcedar. Mistletoe infection is light to moderate. 

Windthrow risk is moderate. All past harvest areas adjacent to or near this unit are adequately restocked with trees at least 5 

feet tall meeting the NFMA requirements for no longer being considered an opening.

Silvicultural Objective/Desired Condition: The desired condition for this stand is a highly productive, healthy, windfirm stand 

grown for timber management that retains residual trees as needed to meet standards and guides or other objectives. 

Silvicultural Prescription: Even-age Management 

This stand is being recommended for harvest at this time because it is not expected to obtain the desired condition given the 

current growth trajectory. This stand is over-mature with moderate to high stem decay and defect resulting in a situation 

where stand growth is being offset or exceeded by decay. Even-aged clear cutting is being prescribed to preclude or 

minimize the risk of windthrow post harvest, promote natural regeneration by opening up the canopy, and minimize defect 

and disease in the future stand to the maximum extent possible. 

The legacy standard and guide applies in this VCU; however, the original planned unit is less than 20 acres and, as a result, 

does not require any legacy set-aside.

 TIMBER/LOGGING:

This unit is planned for uphill cable yarding to landings on the existing NFS road 3013150.

 ENGINEERING/ROADS:

No proposed road construction.

 BOTANY:

No Concerns

 FISHERIES:

Streams are tributaries to Goose Creek. 

Stream#: 2 Class: II, III, IV Flagging: B/W, O/W, G/W C- Type: MMO, HCM, HCO

Concerns: blowdown and active erosion

Buffer (RMA): Class II for MMO greater of 120 feet, flood plain, riparian vegetation or soils, or riparian associated wetland 

fens. Class II for HCM greater of 100 feet or to the top of the side-slope break. Class III for HCM to the top of the side-slope 

break. Class IV for HCO none.

Alternatives: 2, 3, and 5 Buffer (RAW): Will be identified by IDT during layout.

Protection: Category A, B, and C 

Stream#: 2.1R Class: II, IV Flagging: B/W, G/W C- Type: MMO, HCM, HCO

Concerns: blowdown and active erosion

Buffer (RMA): Class II for MMO greater of 120 feet, flood plain, riparian vegetation or soils, or riparian associated wetland 

fens. Class II for HCM greater of 100 feet or to the top of the side-slope break. Class IV for HCO none.

Alternatives: 2, 3, and 5 Buffer (RAW): no review needed

Protection: Category A and C 

Stream#: 3 Class: I, II, IV Flagging: B/W, G/W C- Type: MMO, HCO

Concerns: blowdown and active erosion

Unit

Number 55 Alternatives 2, 3, 5

Summary of Concerns, Responses, BMPs and Mitigation

 INVASIVE SPECIES:

No Concerns
Unit 55

Buffer (RMA): Class I and II for MMO greater of 120 feet, flood plain, riparian vegetation or soils, or riparian associated 

wetland fens. Class IV for HCO none.

Alternatives: 2, 3, and 5 Buffer (RAW): no review needed

Protection: Category A and C 

Stream#: 4 Class: I , IV Flagging: B/W, G/W C- Type: MMO, HCO

Concerns: blowdown and active erosion

Buffer (RMA): Class I for MMO greater of 120 feet, flood plain, riparian vegetation or soils, or riparian associated wetland 

fens. Class IV for HCO none.

Alternatives: 2, 3, and 5 Buffer (RAW): no review needed

Protection: Category A and C 

Stream#: 5 Class: I , IV Flagging: B/W, G/W C- Type: MMO, HCO

Concerns: blowdown and active erosion

Buffer (RMA): Class I for MMO greater of 120 feet, flood plain, riparian vegetation or soils, or riparian associated wetland 

fens. Class IV for HCO none.

Alternatives: 2, 3, and 5 Buffer (RAW): no review needed

Protection: Category A and C

 GEOLOGY/KARST:

No Concerns

 HERITAGE RESOURCES:

This unit was investigated per the third amended interagency Programmatic Agreement (PA) for historic properties. As 

specified by the PA, any potential adverse effect on historic properties (if any) was mitigated and portions of the Area of 

Potential Effect will be monitored by a qualified heritage specialist during and/or after actual ground disturbance.

 SCENERY:

The Scenic Integrity Objective (SIO) for this unit is Very Low . It is in Timber Production LUD and is considered Not Seen. 

There are no scenery resource concerns.

 RECREATION:

Alternatives 2, 3, and 5:

Harvest activities in this unit would be visible to recreationists using the existing road. Recreationists may also encounter 

logging traffic on the road. Harvest in this unit would be consistent with the applicable LUD (Timber Production) and would 

not change existing ROS settings. Harvest has occurred along the road system in the recent past (less than 30 years).

 SOILS/WETLANDS:

Slopes range from 48 to 72%. A minimum of partial suspension would meet soil and wetland resource concerns (BMPs 12.5, 

13.5, and 13.9).

There are approximately 4 acres (24% of the unit) of forested wetland along the eastern unit boundary (BMP12.5).

 WILDLIFE:

Unit includes average snow deer winter range (northern 3/4 of unit), most of which is also deep snow marten habitat/deer 

winter range. Legacy standard and guideline applies in this VCU, however there are no requirements for this unit because 

the original planned opening is less than 20 acres.

Alternative 4: Unit dropped because location coincides with the biologically preferred small OGR.
2030700

3013150

1.1R

1.1R.2R

1.1R.1R.1R

3

1.1R.1R.1L

1.2R

2.1R

1

2

2

1.1R.1R.3L

5

1.1R.1R

4

2

1.1R.1R.2L

2

1.R.1R.3L.1L

1.1R

1992

1992

1992

1992

54

55

56

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 055 Alternative 2 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Partial Cut

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

597.2

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt2.mxd 14 July 2012

RR

SR
2030700

3013150

1.1R

1.1R.2R

1.1R.1R.1R

3

1.1R.1R.1L

1.2R

2.1R

1

2

2

1.1R.1R.3L

5

1.1R.1R

4

2

1.1R.1R.2L

2

1.R.1R.3L.1L

1.1R

1992

1992

1992

1992

54

55

56

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 055 Alternative 3 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

597.2

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt3.mxd 14 July 2012

RR

SR
2030700

3013150

1.1R

1.1R.2R

1.1R.1R.1R

3

1.1R.1R.1L

1.2R

2.1R

1

2

2

1.1R.1R.3L

5

1.1R.1R

4

2

1.1R.1R.2L

2

1.R.1R.3L.1L

1.1R

1992

1992

1992

1992

54

55

56

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 055 Alternative 5 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Sytematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

597.2

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt5.mxd 14 July 2012

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Unit 56

Total Unit

Acres:

2, 3, 5 - 22.2

4 - 18.5

Prescription: Clearcut

VCU

Number:

597.

2

Harvest

System:

Cable, 

Helicopter

Net Harvest

Volume

(MBF):

2, 3, 5 - 558

4 - 466 LUD:

Timber Production

 SILVICULTURE:

Existing Condition: Unit 56 is divided into two main areas by a class II stream and buffer. The primary damage agent 

affecting volume is Alaska-cedar decline and stem form (top kill/dying, crooks, sweeps, forks). Mistletoe infections were light 

and stem decay in the hemlock was moderate. Windthrow risk is moderate across the unit. All past harvest areas adjacent 

to or near this unit are adequately restocked with trees at least 5 feet tall meeting the NFMA requirements for no longer being 

considered an opening.

Silvicultural Objective/Desired Condition: The desired condition for this stand is a highly productive, healthy, windfirm stand 

grown for timber management that retains residual trees as needed to meet standards and guides or other objectives. 

Silvicultural Prescription: Even-age Management 

This stand is being recommended for harvest at this time because it is not expected to obtain the desired condition given the 

current growth trajectory. This stand is over-mature with heavy stem decay and defect resulting in a situation where stand 

growth is being offset or exceeded by decay. Even-aged clear cutting is being prescribed to preclude or minimize the risk of 

windthrow post harvest, promote natural regeneration by opening up the canopy, and minimize defect and disease in the 

future stand to the maximum extent possible. 

The legacy standard and guide applies in this VCU. In Alternatives 2, 3, and 5, this requires that approximately 10 acres of 

productive old growth representative of the overall composition of the planned harvest area be maintained indefinitely (this is 

based on the original unit size, excluding roadless). The required legacy structure is planned along the windward side of the 

main class II stream in the unit allowing for a wider, more windfirm buffer. Legacy also expands other areas of this buffer that 

splits the unit in two. Other legacy areas are planned for portions of the unit expected to be difficult to yard. The total 

mapped legacy is about 10 acres. Any adjustments to the planned unit during implementation must consider the planned 

acreage of legacy. 

In Alternative 4, approximately 8 acres of legacy is required because the original unit is smaller due to the fact that it would 

be partially within the modified OGR. The same legacy areas are used, with the exception of those in the modified OGR. 

The total mapped legacy is about 8 acres.

 TIMBER/LOGGING:

Alternatives 2, 3: This unit is planned for uphill and downhill cable yarding to landings on the proposed temporary road and 

existing NFS road 3013150. 

Alternatives 4, 5: This unit is planned for a combination of helicopter and cable yarding. Cable settings are planned for 

downhill yarding to existing NFS road 3013150. Helicopter yarding is planned to the existing NFS road 3013150.

Unit is adjacent to OGR in Alternative 4 (see Wildlife).

 ENGINEERING/ROADS:

Unit is accessed by a proposed temporary road in Alternatives 2 and 3, totaling 1400 feet, as displayed on the unit card. 

Approximately 800 feet of this road will be constructed across decommissioned road bed.

 BOTANY:

No Concerns

 FISHERIES:

Unit

Number 56 Alternatives 2, 3, 4, 5

Summary of Concerns, Responses, BMPs and Mitigation

 INVASIVE SPECIES:

No Concerns
Unit 56

Streams are tributaries to Goose Creek. 

Stream#: 1.1R Class: I, II Flagging: B/W C- Type: AFM, AFH, HCV

Concerns: blowdown and active erosion

Buffer (RMA): Class I and II for AFM and AFH greater of 140 feet or active portion of the alluvial fan. Class II for HCV 

greater of 100 feet or to the top of the side-slope break. 

Alternatives: 2, 3, 4, and 5 Buffer (RAW): Will be identified by IDT during layout. 

Protection: Category A 

Stream#: 1.1R.1R Class: II, IV Flagging: B/W, G/W C- Type: HCO

Concerns: none

Buffer (RMA): Class II for HCO greater of 100 feet or to the top of the side-slope break. Class IV for HCO none.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed

Protection: Category A and C 

All other streams in unit: Class: IV Flagging: G/W C- Type: HC or MM

Buffer (RMA): none Buffer (RAW): no review needed.

Protection: Category C

Temporary roads for Unit 56: Alternatives 2 and 3 -- Three Class IV stream crossings. If any additional stream crossings are 

found, crossings structures and locations will be approved by USFS, in consultation with fisheries biologist or hydrologist, 

prior to construction (BMP 14.17). During construction of temporary roads implement BMPs 12.17, 13.10, 13.11, 13.16 14.3, 

and 14.5.

 GEOLOGY/KARST:

No Concerns

 HERITAGE RESOURCES:

This unit was investigated per the third amended interagency Programmatic Agreement (PA) for historic properties. As 

specified by the PA, any potential adverse effect on historic properties (if any) was mitigated and portions of the Area of 

Potential Effect will be monitored by a qualified heritage specialist during and/or after actual ground disturbance.

 SCENERY:

The Scenic Integrity Objective (SIO) for this unit is Very Low . It is in Timber Production LUD and is considered Not Seen. 

There are no scenery resource concerns.

 RECREATION:

Harvest activities in this unit would be visible to recreationists using the existing road. Recreationists may also encounter 

logging traffic on the road. Harvest in this unit would be consistent with the applicable LUD (Timber Production) and would 

not change existing ROS settings. Harvest has occurred along the road system in the recent past (less than 30 years).

Much of the southern border of harvest unit is adjacent to the Karta roadless area.

 SOILS/WETLANDS:

Slopes range from 35 to greater than 72% northwest of the bisecting stream and 20 to 25% southeast of the stream. 

Approximately 1 acre of slopes greater than 72% was identified northwest of the bisecting stream including two cliff bands 

with slopes averaging 60% and 72%. These steep slopes are suitable for harvest with partial suspension requirements. 

Southwest of the bisecting stream, the unit is entirely forested wetland/emergent short sedge wetlands. Northwest of the 

stream, there is a small area of forested wetland in the northwestern finger above the cliffs. A minimum of partial suspension 

would meet soil and wetland resource concerns (BMPs 12.5, 13.5, and 13.9).

Alternatives 2 and 3: Based on GIS analysis, the proposed temporary road will impact about 1/2 acre of forested wetland 

within the unit and about 1/2 acre outside the unit, needed to provide access to the western portion of the site. Impacts to 

wetlands were necessary to minimize road construction by accessing unit from existing decommissioned road (BMP 12.5, 

13.2). Provide adequate cross drainage, remove structures, and close the road after harvest (BMP 14.9) (33 CFR BMPs 4,5, 

6).

Alternatives 4 and 5: No proposed road construction.

 WILDLIFE:

Unit includes average snow deer winter range (entire unit), all of which is also deep snow marten habitat/deer winter range. 

Legacy standard and guideline applies in this VCU; Legacy acres cover a portion of the deer winter range/marten habitat.

Alternative 4: Eastern portion of unit dropped because location coincides with the biologically preferred small OGR.
Unit 56

Old-growth Reserve (OGR) Boundary

Alternatives 2, 3, and 5: Unit is not adjacent to an OGR.

Alternative 4: Adopts Interagency OGR which is adjacent to the eastern boundary of unit.
3013150

2030700

4.2L

2

1

2

1.1R

7

5

6

1.1R.1R.1R

1.1R.1R.1L

1.1R.2R

3

1.1R.1L

1.1R.3R

1.1R.5R.2 L

4

1.1 L

1.1R.5R.1 L

1.1R.1R.3L

1.1 R.5R

4

4.1L

5

1.1R.1R

1.1R.4R

4

1.1R

2

1.1R.1R.2L

1.R.1R.3L.1L

1992

1992

1992

56

56

57

55

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 056 Alternative 2 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Partial Cut

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

597.2

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RR

SR
3013150

2030700

4.2L

2

1

2

1.1R

7

5

6

1.1R.1R.1R

1.1R.1R.1L

1.1R.2R

3

1.1R.1L

1.1R.3R

1.1R.5R.2 L

4

1.1 L

1.1R.5R.1 L

1.1R.1R.3L

1.1 R.5R

4

4.1L

5

1.1R.1R

1.1R.4R

4

1.1R

2

1.1R.1R.2L

1.R.1R.3L.1L

1992

1992

1992

56

56

57

55

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 056 Alternative 3 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

597.2

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt3.mxd 14 July 2012

RR

SR
3013150

2030700

1

2

1.1R

7

5

6

1.1R.1R.1R

1.1R.1R.1L

1.1R.2R

3

1.1R.1L

1.1R.3R

1.1R.5R.2 L

4

1.1 L

1.1R.5R.1 L

1.1R.1R.3L

1.1 R.5R

4

4.1L

5

1.1R.1R

1.1R.4R

4

1.1R

2

1.1R.1R.2L

1.R.1R.3L.1L

4.2L

2

1992

1992

1992

56

56

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 056 Alternative 4 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

597.2

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt4.mxd 20 March 2012

RR

SR
3013150

2030700

4.2L

2

1

2

1.1R

7

5

6

1.1R.1R.1R

1.1R.1R.1L

1.1R.2R

3

1.1R.1L

1.1R.3R

1.1R.5R.2 L

4

1.1 L

1.1R.5R.1 L

1.1R.1R.3L

1.1 R.5R

4

4.1L

5

1.1R.1R

1.1R.4R

4

1.1R

2

1.1R.1R.2L

1.R.1R.3L.1L

1992

1992

1992

56

56

57

55

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 056 Alternative 5 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Sytematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

597.2

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt5.mxd 14 July 2012

RR

SR
Unit 57

Total Unit

Acres:

23.9 Prescription: Clearcut

VCU

Number:

597.

2

Harvest

System:

Cable, 

Shovel, 

Net Harvest

Volume

(MBF):

561

LUD:

Timber Production

 SILVICULTURE:

Existing Condition: Unit 57 has old-growth stand structure. In the western hemlock stem rot is moderate to high with light to 

moderate mistletoe. Defect for all other species is moderate to high. In the Alaska-cedar, decline is heavy across the area. 

Windthrow risk is moderate. All past harvest areas adjacent to or near this unit are adequately restocked with trees at least 5 

feet tall meeting the NFMA requirements for no longer being considered an opening.

Silvicultural Objective/Desired Condition: The desired condition for this stand is a highly productive, healthy, windfirm stand 

grown for timber management that retains residual trees as needed to meet standards and guides or other objectives. 

Silvicultural Prescription: Even-age Management 

This stand is being recommended for harvest at this time because it is not expected to obtain the desired condition given the 

current growth trajectory. This stand is over-mature with heavy stem decay and defect resulting in a situation where stand 

growth is being offset or exceeded by decay. Even-aged clear cutting is being prescribed to preclude or minimize the risk of 

windthrow post harvest, promote natural regeneration by opening up the canopy, and minimize defect and disease in the 

future stand to the maximum extent possible. 

The legacy standard and guide applies in this VCU. This requires that approximately 10 acres of productive old growth 

representative of the overall composition of the planned harvest area be maintained indefinitely. The required legacy 

structure is planned to coincide with and build off a Class I,II,III RMA in the middle of the unit. As such, it reduces the need 

for RAW buffer, shortens the required road length, creates a block of POG in the center of unit and divides the opening into 

smaller openings. Total mapped legacy in unit equals 10 acres. Any adjustments to the planned unit during implementation 

must consider the planned acreage of legacy.

 TIMBER/LOGGING:

Alternatives 2, 3: This unit is planned for a combination of shovel yarding in the northern setting and cable yarding in the 

southern setting. Cable settings are planned for uphill and downhill yarding to landings on the southern proposed temporary 

road. Shovel settings are planned for yarding to the northern proposed temporary road and existing NFS road 3013150. 

Alternative 5: This unit is planned for a combination of shovel yarding in the northern setting and helicopter yarding in the 

southern setting in Alternative 5. Shovel settings are planned for yarding to the existing NFS road 3013150 and northern 

proposed temporary road. Helicopter yarding is planned to a landing on the existing NFS road 3013150.

 ENGINEERING/ROADS:

Unit is accessed by two proposed temporary roads in Alternatives 2 and 3, totaling 2,100 feet, as displayed on the unit card. 

Unit is accessed by one proposed temporary road in Alternative 5, totaling 900 feet, as displayed on the unit card.

 BOTANY:

No Concerns

 FISHERIES:

Unit

Number 57 Alternatives 2, 3, 5

Summary of Concerns, Responses, BMPs and Mitigation

 INVASIVE SPECIES:

No Concerns
Unit 57

 FISHERIES:

Streams are tributaries to Goose Creek. 

Stream#: 1 Class: II , IV Flagging: B/W, G/W C- Type: HCO

Concerns: none

Buffer (RMA): Class II for HCO greater of 100 feet or to the top of the side-slope break. Class IV for HCO none.

Alternatives: 2, 3, and 5 Buffer (RAW): no review needed

Protection: Category A and C 

Stream#: 2 Class: I , II, IV Flagging: B/W, G/W C- Type: MMO, HCO

Concerns: none

Buffer (RMA): Class I for MMO greater of 120 feet, flood plain, riparian vegetation or soils, or riparian associated wetland 

fens. Class II for HCO greater of 100 feet or to the top of the side-slope break. Class IV for HCO none.

Alternatives: 2, 3, and 5 Buffer (RAW): Will be identified by IDT during layout.

Protection: Category A and C 

 

Stream#: 3 Class: II , IV Flagging: B/W, G/W C- Type: HCO

Concerns: none

Buffer (RMA): Class II for HCO greater of 100 feet or to the top of the side-slope break. Class IV for HCO none.

Alternatives: 2, 3, and 5 Buffer (RAW): no review needed

Protection: Category A and C 

Stream#: 4 Class: I, III, IV Flagging: B/W, O/W, G/W C- Type: MMS, HCM, HCO

Concerns: none

Buffer (RMA): Class I for MMS greater of 120 feet, flood plain, riparian vegetation or soils, or riparian associated wetland 

fens. Class III for HCM gto the top of the side-slope break. Class IV for HCO none.

Alternatives: 2, 3, and 5 Buffer (RAW): no review needed

Protection: Category A, B, and C 

Stream#: 5 Class: I , IV Flagging: B/W, G/W C- Type: MMO

Concerns: none

Buffer (RMA): Class I for MMO greater of 120 feet, flood plain, riparian vegetation or soils, or riparian associated wetland 

fens. Class IV for MMO none.

Alternatives: 2, 3, and 5 Buffer (RAW): no review needed

Protection: Category A and C 

Stream#: 6 Class: I , IV Flagging: B/W, G/W C- Type: MMO, HCO

Concerns: none

Buffer (RMA): Class I for MMO greater of 120 feet, flood plain, riparian vegetation or soils, or riparian associated wetland 

fens. Class IV for HCO none.

Alternatives: 2, 3, and 5 Buffer (RAW): no review needed

Protection: Category A and C 

Stream#: 7 Class: I , IV Flagging: B/W, G/W C- Type: MMO, HCO

Concerns: none

Buffer (RMA): Class I for MMO greater of 120 feet, flood plain, riparian vegetation or soils, or riparian associated wetland 

fens. Class IV for HCO none.

Alternatives: 2, 3, and 5 Buffer (RAW): no review needed.

Protection: Category A and C 

Stream#: 8 Class: II , IV Flagging: B/W, G/W C- Type: HCO

Concerns: none

Buffer (RMA): Class II for HCO greater of 100 feet or to the top of the side-slope break. Class IV for HCO none.

Alternatives: 2, 3, and 5 Buffer (RAW): no review needed

Protection: Category A and C 

All other streams in unit: Class: IV Flagging: G/W C- Type: HC

Buffer (RMA): none Buffer (RAW): no review needed

Protection: Category C 

Temporary roads for Unit 57: Alternatives 2 and 3 -- Four Class IV stream crossings . Alternative 5 -- Two Class IV stream 

crossings. If any additional stream crossings are found, crossings structures and locations will be approved by USFS, in 

consultation with fisheries biologist or hydrologist, prior to construction (BMP 14.17). During construction of temporary roads 

implement BMPs 12.17, 13.10, 13.11, 13.16, 14.3, and 14.5.
Unit 57

 GEOLOGY/KARST:

No Concerns

 HERITAGE RESOURCES:

This unit was investigated per the third amended interagency Programmatic Agreement (PA) for historic properties. As 

specified by the PA, any potential adverse effect on historic properties (if any) was mitigated and portions of the Area of 

Potential Effect will be monitored by a qualified heritage specialist during and/or after actual ground disturbance.

 SCENERY:

The Scenic Integrity Objective (SIO) for this unit is Very Low . It is in Timber Production LUD and is considered Not Seen. 

There are no scenery resource concerns.

 RECREATION:

No Concerns

 SOILS/WETLANDS:

Slopes range from 23 to 40%. West of the 3013150 road, the unit is entirely forested wetland/ emergent short sedge 

wetlands. In this portion of the unit, a minimum of partial suspension will meet soil and wetland resource concerns (BMPs 

12.5, 13.5, and 13.9). The remainder of the unit is about 30% forested wetland. East of the 3013150 road, the soils and 

wetlands are suitable for minimum partial suspension yarding or shovel yarding. All logging systems should follow BMPs 

12.5, 13.2 and 13.9. Specifically, the shovel operator should avoid the small non-forested areas of the unit to prevent rutting. 

Slopes over 25% gradient may not be suitable for shovel yarding under some soil moisture conditions. Use care when 

approving shovel yarding on slopes over 25% gradient. Avoid track slippage and rutting.

Alternatives 2 and 3: A temporary road will impact about 1 acre of forested wetland within the unit and about 1/2 acre of 

emergent short sedge/forested wetland complex and 1/4 acre of forested wetland outside the unit. Due to the extent of 

wetlands and location of existing roads, there is no other access point that would provide road access with less wetland 

impacts (BMP 12.5, 13.2). Provide adequate cross drainage, remove drainage structures, and close road after harvest (BMP 

14.9) (33 CFR BMPs 4, 5, 6).

Alternative 5: A temporary road will impact about 1 acre of forested wetland in the unit and about 1/4 acre outside of the unit. 

Due to the extent of wetlands and location of existing roads, there is no other access point that would provide road access 

with less wetland impacts (BMP 12.5, 13.2). Provide adequate cross drainage, remove drainage structures, and close road 

after harvest (BMP 14.9) (33 CFR BMPs 4, 5, 6).

 WILDLIFE:

Unit includes average snow deer winter range (entire unit). Legacy standard and guideline applies in this VCU; Legacy acres 

cover some deer winter range.

Alternative 4: Unit dropped because location coincides with the biologically preferred small OGR.
3013150

2030750

1.1R.1R

1

4

2

2

5

1

2

4.2L

2

1.1R.1R.1

1.1R.5R.2L

1.1R.2R

3

1.1R.1L

1.1R.3R

1.1R

1.1R.5R .1L

1.1 L

6 7

1. 1R.5R

4

1.1R

4.1L

8

1.R.1R.3L.1L

1.1R.1R.2L

1.1R.4R

1.1R

2005

2005

1992

2004

1992

56

57

58

59

56

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 057 Alternative 2 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Partial Cut

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

597.2

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt2.mxd 14 July 2012

RR

SR
3013150

2030750

1.1R.1R

1

4

2

2

5

1

2

4.2L

2

1.1R.1R.1

1.1R.5R.2L

1.1R.2R

3

1.1R.1L

1.1R.3R

1.1R

1.1R.5R .1L

1.1 L

6 7

1. 1R.5R

4

1.1R

4.1L

8

1.R.1R.3L.1L

1.1R.1R.2L

1.1R.4R

1.1R

2005

2005

1992

2004

1992

56

57

58

59

56

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 057 Alternative 3 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

597.2

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt3.mxd 14 July 2012

RR

SR
3013150

2030750

1.1R.1R

1

4

2

2

5

1

2

4.2L

2

1.1R.1R.1

1.1R.5R.2L

1.1R.2R

3

1.1R.1L

1.1R.3R

1.1R

1.1R.5R .1L

1.1 L

6 7

1. 1R.5R

4

1.1R

4.1L

8

1.R.1R.3L.1L

1.1R.1R.2L

1.1R.4R

1.1R

2005

2005

1992

2004

1992

56

57

58

59

56

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 057 Alternative 5 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Sytematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

597.2

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt5.mxd 14 July 2012

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Unit 58

Total Unit

Acres:

16.9 Prescription: Clearcut

VCU

Number:

597.

2

Harvest

System:

Cable

Net Harvest

Volume

(MBF):

397

LUD:

Timber Production

 SILVICULTURE:

Existing Condition: Unit 58 has old growth stand structure. Most overstory trees are unacceptable tree class with stem rot 

being the dominant defect. In the overstory the middle and smaller diameter trees have lower defect while the larger diameter 

western redcedar has many dead tops and high internal defect. Alaska-cedar decline is occurring in the unit particularly in 

lower volume areas in the east and along the western edges. Windthrow risk is moderate. All past harvest areas adjacent to 

or near this unit are adequately restocked with trees at least 5 feet tall meeting the NFMA requirements for no longer being 

considered an opening.

Silvicultural Objective/Desired Condition: The desired condition for this stand is a highly productive, healthy, windfirm stand 

grown for timber management that retains residual trees as needed to meet standards and guides or other objectives. 

Silvicultural Prescription: Even-age Management 

This stand is being recommended for harvest at this time because it is not expected to obtain the desired condition given the 

current growth trajectory. This stand is over-mature with heavy stem decay and defect resulting in a situation where stand 

growth is being offset or exceeded by decay. Even-aged clear cutting is being prescribed to preclude or minimize the risk of 

windthrow post harvest, promote natural regeneration by opening up the canopy, and minimize defect and disease in the 

future stand to the maximum extent possible. 

The legacy standard and guide applies in this VCU; however, the original planned unit was less than 20 acres and, as a 

result, does not require any legacy set-aside.

 TIMBER/LOGGING:

This unit is planned for uphill and downhill cable yarding to landings on the existing NFS road 3013150.

 ENGINEERING/ROADS:

No proposed road construction.

 BOTANY:

No Concerns

 FISHERIES:

Streams are tributaries to Goose Creek. 

Stream#: 1 Class: III, IV Flagging: O/W, G/W C- Type: HCL , HCO

Concerns: blowdown

Buffer (RMA): Class III for HCL to the top of the side-slope break. Class IV for HCO none.

Alternatives: 2, 3 and 5 Buffer (RAW): Will be identified during IDT layout.

Protection: Category B and C 

Stream#: 2 Class: III, IV Flagging: O/W, G/W C- Type: HCO

Concerns: blowdown

Buffer (RMA): Class III for HCO to the top of the side-slope break. Class IV for HCO none.

Alternatives: 2, 3 and 5 Buffer (RAW): no review needed.

Protection: Category B and C 

Unit

Number 58 Alternatives 2, 3, 5

Summary of Concerns, Responses, BMPs and Mitigation

 INVASIVE SPECIES:

Infestation of tansy ragwort located along road 3013150 between units 58 and 59. One population also occurs along haul 

route by Sandy Beach. All locations have been treated. The population by Units 58 and 59 is not known to persist; this 

location should be monitored and treated if plants are observed. The population by Sandy Beach is known to persist and 

should be treated.
Unit 58

All other streams in unit: Class: IV Flagging: G/W C- Type: HC

Buffer (RMA): none Buffer (RAW): no review needed.

Protection: Category C

 GEOLOGY/KARST:

No Concerns

 HERITAGE RESOURCES:

This unit was investigated per the third amended interagency Programmatic Agreement (PA) for historic properties. As 

specified by the PA, any potential adverse effect on historic properties (if any) was mitigated and portions of the Area of 

Potential Effect will be monitored by a qualified heritage specialist during and/or after actual ground disturbance.

 SCENERY:

The Scenic Integrity Objective (SIO) for this unit is Very Low . It is in Timber Production LUD and is considered Not Seen. 

There are no scenery resource concerns.

 RECREATION:

Harvest activities in this unit would be visible to recreationists using the existing road. Recreationists may also encounter 

logging traffic on the road. Harvest in this unit would be consistent with the applicable LUD (Timber Production) and would 

not change existing ROS settings. Harvest has occurred along the road system in the recent past (less than 30 years). This 

road is not a VPR.

 SOILS/WETLANDS:

Slopes range from 25% to over 72%. No wetlands were identified during field reconnaissance. There are approximately 2 

acres of slopes greater than 72% near the center of the unit, east of the 3013150 road. These steep slopes are suitable for 

harvest with partial suspension requirements. A minimum of partial suspension would meet soil and wetland resource 

concerns (BMPs 12.5, 13.5, and 13.9).

 WILDLIFE:

Unit includes average snow deer winter range (all of unit except very eastern edge), most of which is also deep snow marten 

habitat/deer winter range. Legacy standard and guideline applies in this VCU, however there are no requirements for this 

unit because the original planned unit is less than 20 acres.

Alternative 4: Unit dropped because location mostly coincides with the biologically preferred small OGR.
2030750

3013150

3013165

1R.1L

5

7

4

4.1L

8

6

98-1.3R

1.5R

1.4R

1

4

1.2R

1.1R

2

4.2L

1992

2005

1992

57

58

59

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 058 Alternative 2 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Partial Cut

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

597.2

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt2.mxd 14 July 2012

RR

SR
2030750

3013150

3013165

1R.1L

5

7

4

4.1L

8

6

98-1.3R

1.5R

1.4R

1

4

1.2R

1.1R

2

4.2L

1992

2005

1992

57

58

59

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 058 Alternative 3 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

597.2

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt3.mxd 14 July 2012

RR

SR
2030750

3013150

1R.1L

5

7

4

4.1L

8

6

98-1.3R

1.5R

1.4R

1

4

1.2R

1.1R

2

4.2L

1992

2005

1992

57

58

59

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 058 Alternative 5 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Sytematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

597.2

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt5.mxd 14 July 2012

RR

SR
Unit 59

Total Unit

Acres:

2, 3, 5 - 37.8

4 - 48.8

Prescription: 2, 3, 4, 5 - 

Clearcut

4 - 33% and 

50% Removal

VCU

Number:

597.

2

Harvest

System:

Cable, 

Shovel, 

Net Harvest

Volume

(MBF):

2, 3, 5 - 

1,271

4 - 882

LUD:

Timber Production

 SILVICULTURE:

Existing Condition: Unit 59 has old-growth stand structure. Poor stem form, top damage and stem decay are the dominant 

defect agents. Windthrow risk is moderate. All past harvest areas adjacent to or near this unit are adequately restocked with 

trees at least 5 feet tall meeting the NFMA requirements for no longer being considered an opening.

Silvicultural Objective/Desired Condition: The desired condition for this stand is a highly productive, healthy, windfirm stand 

grown for timber management that retains residual trees as needed to meet standards and guides or other objectives. 

Silvicultural Prescription: Even-age Management (Alternative 2, 3, 5, and Alternative 4 North cable setting)

This stand is being recommended for harvest at this time because it is not expected to obtain the desired condition given the 

current growth trajectory. This stand is over-mature with heavy stem decay and defect resulting in a situation where stand 

growth is being offset or exceeded by decay. Even-aged clear cutting is being prescribed to preclude or minimize the risk of 

windthrow post harvest, promote natural regeneration by opening up the canopy, and minimize defect and disease in the 

future stand to the maximum extent possible. 

The legacy standard and guide applies in this VCU. This requires that approximately 16 acres of productive old growth 

representative of the overall composition of the planned harvest area be maintained indefinitely in Alternatives 2, 3, and 5. 

The required legacy structure is planned in three blocks. The center block cuts the unit into two openings and the two other 

blocks reduce the opening sizes. The center block builds off of RMAs and unsutiable soil areas and reduces the need for 

RAW buffers associated with two streams that traverse the unit. Total mapped legacy equals 16 acres. Any adjustments to 

the planned unit during implementation must consider the planned acreage of legacy. 

In Alternative 4 additional legacy is not required because the clearcut portion of unit is only about 11 acres and about 38 

acres will provide structure because of uneven-aged management (see below). 

Silvicultural Prescription: Uneven-age Management Group Selection (Alternative 4 South Cable Settings)

Harvest up to 33% of the planned setting acreage in groups of trees up to two acres in size. Group selections should be well 

distributed across the stand. Locate groups to address insect and disease issues or capitalize on existing advanced 

regeneration of desirable tree species where possible. Locate group selections to maintain wildlife travel ways and important 

habitat while maximizing the economics of this entry and also maintaining the feasibility of future harvest entries in the 

remaining old growth portions of the unit. The uneven-aged group selection regeneration method is being prescribed for the 

unit or portions of the unit as a means to maintain large amounts of diverse structure to benefit wildlife in perpetuity. 

Silvicultural Prescription: Uneven-age Management Single Tree Selection (Alternative 4, Helicopter Settings)

Maintain at least 50 percent of the setting pretreatment basal area, based on standing live tree total for the unit, uncut. 

Individual trees selected for harvest may occur in small groups but will generally be evenly distributed across the stand. Any 

small groups will usually be less than one acre but may occasionally go up to two acres in size where needed to address 

insect and disease issues or capitalize on existing advanced regeneration of desirable tree species. Trees selected for 

harvest will generally be well distributed and no large openings will occur as a result of the harvest. Review the marking 

guides and silvicultural prescription for more detailed information and direction for how to implement this prescription. The 

uneven-aged single tree selection regeneration method is being prescribed for this unit in Alternative 4 specifically to 

maintain intact diverse structure for wildlife needed at this time and place in the landscape to meet the objectives of this 

alternative. This system is not optimum for promoting timber production but is being prescribed in alternative 4 primarily to 

mitigate the overall effects of the project on wildlife.

 TIMBER/LOGGING:

Alternatives 2, 3: This unit is planned for a combination of shovel and cable yarding. Cable settings are planned for uphill 

yarding to landings on the proposed NFS road 3013165 and existing NFS road 3013150. Shovel settings are planned for 

yarding to the proposed NFS road 3013165. 

Unit

Number 59 Alternatives 2, 3, 4, 5

Summary of Concerns, Responses, BMPs and Mitigation
Unit 59

Alternatives 4, 5: This unit is planned for a combination of cable and helicopter yarding. Cable settings are planned for uphill 

and downhill yarding to landings on existing NFS road 3013150. Helicopter settings are planned for yarding to existing NFS 

road 3013150. Uneven-age management group selection with 67% retention is planned in the three southermost cable 

settings in Alternative 4. Uneven-age management single-tree selection with 50% retention is planned in all helicopter 

settings in Alternative 4.

 ENGINEERING/ROADS:

Unit is accessed by proposed NFS road 3013165 in Alternatives 2 and 3, totaling 4900 feet. See road card detailed 

information.

 BOTANY:

No Concerns

 FISHERIES:

Streams are tributaries to Goose Creek. 

Stream#: 1.3R Class: III, IV Flagging: O/W, G/W C- Type: HCM, HCO

Concerns: none

Buffer (RMA): Class III for HCM to the top of the side-slope break. Class IV for HCO none. 

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed

Protection: Category B and C 

Stream#: 1.4R Class: III, IV Flagging: O/W, G/W C- Type: HCM, HCO

Concerns: blowdown and active erosion

Buffer (RMA): Class III for HCM to the top of the side-slope break. Class IV for HCO none. 

Alternatives: 2, 3, 4, and 5 Buffer (RAW): Will be identified by IDT during layout. 

Protection: Category B and C 

Stream#: 1.5R Class: III Flagging: O/W C- Type: HCD

Concerns: blowdown and active erosion 

Buffer (RMA): Class III for HCD to the top of the side-slope break. 

Alternatives: 2, 3, 4, and 5 Buffer (RAW): Will be identified by IDT during layout. 

Protection: Category B 

Stream#: 1.3R.1R Class: III, IV Flagging: O/W, G/W C- Type: HCL, HCO

Concerns: none 

Buffer (RMA): Class III for HCL to the top of the side-slope break. Class IV for HCO none. 

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed

Protection: Category B and C 

All other streams in unit: Class: IV Flagging: G/W C- Type: HC

Buffer (RMA): none Buffer (RAW): no review needed

Protection: Category C

 GEOLOGY/KARST:

No Concerns

 HERITAGE RESOURCES:

This unit was investigated per the third amended interagency Programmatic Agreement (PA) for historic properties. As 

specified by the PA, any potential adverse effect on historic properties (if any) was mitigated and portions of the Area of 

Potential Effect will be monitored by a qualified heritage specialist during and/or after actual ground disturbance.

 SCENERY:

The Scenic Integrity Objective (SIO) for this unit is Very Low . It is in Timber Production LUD and is considered Not Seen. 

There are no scenery resource concerns.

 RECREATION:

 INVASIVE SPECIES:

Infestation of tansy ragwort located along road 3013150 between units 58 and 59. One population also occurs along haul 

route by Sandy Beach. All locations have been treated. The population by Units 58 and 59 is not known to persist; this 

location should be monitored and treated if plants are observed. The population by Sandy Beach is known to persist and 

should be treated.
Unit 59

 RECREATION:

Harvest activities in this unit would be visible to recreationists using the existing road. Recreationists may also encounter 

logging traffic on the road. Harvest in this unit would be consistent with the applicable LUD (Timber Production) and would 

not change existing ROS settings. Harvest has occurred along the road system in the recent past (less than 30 years). This 

road is not a VPR.

 SOILS/WETLANDS:

Slopes range from about 40% to 98%. About 1 acre was excluded due to steep slopes. All slopes greater than 72% are 

located within the soil exclusion area. Sporadic forested wetlands occur intermittently throughout the unit. The soils and 

wetlands are suitable for minimum partial suspension yarding or shovel yarding. All logging systems should follow BMPs 

12.5, 13.2 and 13.9. Specifically, the shovel operator should avoid the small non-forested areas of the unit to prevent rutting. 

Slopes over 25% gradient may not be suitable for shovel yarding under some soil moisture conditions. Use care when 

approving shovel yarding on slopes over 25% gradient. Avoid track slippage and rutting.

 WILDLIFE:

Unit includes average snow deer winter range (entire unit). Legacy standard and guideline applies in this VCU; Legacy acres 

cover some deer winter range. 

Alternative 4: Prescriptions are 50% basal area removal in helicopter settings and group selection with 33% harvest by area 

in cable settings to maintain habitat values. No additional legacy acres required because adequate structure retained in unit 

under uneven-aged harvest prescriptions and no openings larger than 20 acres.
3013150

3013165

1.5R

1.1R

1.2R

1.3R

1.3R.1R

1.7R

1.6R

98-1.3R

1.5R

1.4R

1

1

1.3R.1R

1.2R

1.1R

2

1992

1992

1992

58

59

60

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 059 Alternative 2 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Partial Cut

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

597.2

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt2.mxd 14 July 2012

RR

SR
3013150

3013165

1.5R

1.1R

1.2R

1.3R

1.3R.1R

1.7R

1.6R

98-1.3R

1.5R

1.4R

1

1

1.3R.1R

1.2R

1.1R

2

1992

1992

1992

58

59

60

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 059 Alternative 3 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

597.2

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt3.mxd 14 July 2012

RR

SR
3013150

1.5R

1.1R

1.2R

1.3R

1.3R.1R

1.7R

1.6R

98-1.3R

1.5R

1.4R

1

1

1.3R.1R

1.2R

1.1R

2

1992

1992

1992

59

60

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 059 Alternative 4 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

597.2

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt4.mxd 20 March 2012

RR

SR
3013150

1.5R

1.1R

1.2R

1.3R

1.3R.1R

1.7R

1.6R

98-1.3R

1.5R

1.4R

1

1

1.3R.1R

1.2R

1.1R

2

1992

1992

1992

58

59

60

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 059 Alternative 5 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Sytematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

597.2

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt5.mxd 14 July 2012

RR

SR
Unit 60

Total Unit

Acres:

9.4 Prescription: 2, 3, 5 - Clearcut

4 - 25% Removal

VCU

Number:

597.

2

Harvest

System:

Helicopter

Net Harvest

Volume

(MBF):

2, 3, 5 - 199

4 - 50 LUD:

Timber Production

 SILVICULTURE:

Existing Condition: This unit has old-growth stand structure comprised of a western hemlock and western redcedar overstory 

with numerous dead Alaska-cedar throughout. The stand has moderate to high occurrence of Alaska-cedar decline. In the 

hemlock, mistletoe was rated as light, while stem rot is moderate to high especially in the larger diameter trees. Defect for all 

species is high. Windthrow risk is moderate. All past harvest areas adjacent to or near this unit are adequately restocked with 

trees at least 5 feet tall meeting the NFMA requirements for no longer being considered an opening.

Silvicultural Objective/Desired Condition: The desired condition for this stand is a highly productive, healthy, windfirm stand 

grown for timber management that retains residual trees as needed to meet standards and guides or other objectives. 

Silvicultural Prescription: Even-age Management (Alternatives 2, 3, and 5)

This stand is being recommended for harvest at this time because it is not expected to obtain the desired condition given the 

current growth trajectory. This stand is over-mature with heavy stem decay and defect resulting in a situation where stand 

growth is being offset or exceeded by decay. Even-aged clear cutting is being prescribed to preclude or minimize the risk of 

windthrow post harvest, promote natural regeneration by opening up the canopy, and minimize defect and disease in the 

future stand to the maximum extent possible. 

The legacy standard and guide applies in this VCU. This unit is however less than 20 acres as originally planned and, as a 

result, does not require any legacy set-aside. 

Silvicultural Prescription: Uneven-age Management Single Tree Selection (Alternative 4)

Maintain at least 75 percent of the setting pretreatment basal area, based on standing live tree total for the unit, uncut. 

Individual trees selected for harvest may occur in small groups but will generally be evenly distributed across the stand. Any 

small groups will usually be less than one acre but may occasionally go up to two acres in size where needed to address 

insect and disease issues or capitalize on existing advanced regeneration of desirable tree species. Trees selected for 

harvest will generally be well distributed and no large openings will occur as a result of the harvest. Review the marking 

guides and silvicultural prescription for more detailed information and direction for how to implement this prescription. The 

uneven-aged single tree selection regeneration method is being prescribed for this unit in Alternative 4 specifically to 

maintain intact diverse structure for wildlife needed at this time and place in the landscape to meet the objectives of this 

alternative. This system is not optimum for promoting timber production but is being prescribed in alternative 4 primarily to 

mitigate the overall effects of the project on wildlife.

 TIMBER/LOGGING:

This unit is planned for helicopter yarding to landings on existing NFS road 3013150.

 ENGINEERING/ROADS:

No proposed road construction.

 BOTANY:

No Concerns

 FISHERIES:

Unit

Number 60 Alternatives 2, 3, 4, 5

Summary of Concerns, Responses, BMPs and Mitigation

 INVASIVE SPECIES:

No Concerns
Unit 60

Streams are tributaries to Goose Creek. 

Stream#: 1 Class: I, II, III Flagging: B/W, O/W C- Type: MMS, AFH, HCD 

Concerns: blowdown and active erosion

Buffer (RMA): Class I for MMS greater of 120 feet, flood plain, riparian vegetation or soils, or riparian associated wetland 

fens. Class I for AFH greater of 140 feet or active portion of the alluvial fan. Class II for HCD greater of 100 feet or to the top 

of the side-slope break. Class III for HCD to the top of the side-slope break. 

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed 

Protection: Category A and B 

Stream#: 1.3R Class: I, III Flagging: B/W, O/W C- Type: AFH, HCD

Concerns: blowdown, steep side-slope with mobile fine sedidment and active erosion

Buffer (RMA): Class I for AFH greater of 140 feet or active portion of the alluvial fan. Class III for HCD to the side-slope 

break. 

Alternatives: 2, 3 and 5 Buffer (RAW): Will be identified by IDT during layout.

Alternative: 4 Buffer (RAW): no review needed

Protection: Category A and B 

Stream#: 1.3R.1R Class: III Flagging: O/W C- Type: HCD

Concerns: blowdown, steep side-slope with mobile fine sedidment and active erosion

Buffer (RMA): Class III for HCD to the top of the side-slope break. 

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed 

Protection: Category B 

All other streams in unit: Class: IV Flagging: G/W C- Type: HC

Buffer (RMA): none Buffer (RAW): no review needed.

Protection: Category C 

 GEOLOGY/KARST:

No Concerns

 HERITAGE RESOURCES:

This unit was investigated per the third amended interagency Programmatic Agreement (PA) for historic properties. As 

specified by the PA, any potential adverse effect on historic properties (if any) was mitigated and portions of the Area of 

Potential Effect will be monitored by a qualified heritage specialist during and/or after actual ground disturbance.

 SCENERY:

The Scenic Integrity Objective (SIO) for this unit is Very Low . It is in Timber Production LUD and is considered Not Seen. 

There are no scenery resource concerns.

 RECREATION:

No concerns

 SOILS/WETLANDS:

Slopes range from 35% to 45%. Sporadic forested wetlands occur intermittently throughout the unit. A minimum of partial 

suspension would meet soil and wetland resource concerns (BMPs 12.5, 13.5, and 13.9).

 WILDLIFE:

Unit includes average snow deer winter range (entire unit), some of which is also deep snow marten habitat/deer winter 

range (western setting). Legacy standard and guideline applies in this VCU, however there are no requirements for this unit 

because the original planned area is less than 20 acres.

Alternative 4: Prescription is 25% basal area removal to maintain habitat values.
3013150

3013165

1

1.1R

1.4R

1.2R

1.5R

1.3R.1R

1.7R

1.6R

1

1.3R

1

1.3R.1R

2005

1992

1992

59

60

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 060 Alternative 2 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Partial Cut

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

597.2

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt2.mxd 14 July 2012

RR

SR
3013150

3013165

1

1.1R

1.4R

1.2R

1.5R

1.3R.1R

1.7R

1.6R

1

1.3R

1

1.3R.1R

2005

1992

1992

59

60

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 060 Alternative 3 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

597.2

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt3.mxd 14 July 2012

RR

SR
3013150

1

1.1R

1.4R

1.2R

1.5R

1.3R.1R

1.7R

1.6R

1

1.3R

1

1.3R.1R

2005

1992

1992

59

60

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 060 Alternative 4 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

597.2

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt4.mxd 20 March 2012

RR

SR
3013150

1

1.1R

1.4R

1.2R

1.5R

1.3R.1R

1.7R

1.6R

1

1.3R

1

1.3R.1R

2005

1992

1992

59

60

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 060 Alternative 5 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Sytematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

597.2

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt5.mxd 14 July 2012

RR

SR
Unit 62

Total Unit

Acres:

17.3 Prescription: 2, 3, 5 - Clearcut

4 - 33% Removal

VCU

Number:

597.

1

Harvest

System:

Shovel, 

Helicopter

Net Harvest

Volume

(MBF):

2, 3, 5 - 310

4 - 102 LUD:

Modified Landscape, 

Recreation River

 SILVICULTURE:

Existing Condition: This unit has old-growth stand structure. Defect and damages are moderate to high. Windthrow risk is 

moderate. The stand has moderate to high occurrence of Alaska-cedar decline. In the hemlock, mistletoe was rated as light. 

A previous harvest is adjacent to unit on the northwest edge has met green-up with regeneration over 5 foot tall and meets 

NFMA requirements for no longer being considered an opening.

Silvicultural Objective/Desired Condition: The desired condition for this stand is a highly productive, healthy, windfirm stand 

grown for timber management that retains residual trees as needed to meet standards and guides or other objectives. 

Silvicultural Prescription: Even-age Management - Clearcut (Alternatives 2, 3, and 5)

This stand is being recommended for harvest at this time because it is not expected to obtain the desired condition given the 

current growth trajectory. This stand is over-mature with moderate to heavy stem decay and defect resulting in a situation 

where stand growth is being offset or exceeded by decay. Even-aged clear cutting is being prescribed to preclude or 

minimize the risk of windthrow post harvest, promote natural regeneration by opening up the canopy, and minimize defect 

and disease in the future stand to the maximum extent possible.

Silvicultural Prescription: Uneven-age Management Group Selection (Alternative 4)

Harvest up to 33% of the planned setting acreage in groups of trees up to two acres in size. Group selections should be well 

distributed across the stand. In shovel setting, groups would have to be located off a central swing corridor. Locate groups to 

address insect and disease issues or capitalize on existing advanced regeneration of desirable tree species where possible. 

Locate group selections to maintain wildlife travel ways and important habitat while maximizing the economics of this entry 

and also maintaining the feasibility of future harvest entries in the remaining old growth portions of the unit. The uneven-aged 

group selection regeneration method is being prescribed for the unit or portions of the unit as a means to maintain large 

amounts of diverse structure to benefit wildlife over time.

 TIMBER/LOGGING:

Alternatives 2, 3, 5: This unit is planned for a shovel yarding to the proposed temporary road and existing NFS road 

3015050. 

Alternative 4: This unit is planned for a combination of helicopter and shovel yarding. Shovel setting is planned for yarding to 

the existing NFS road 3015050. Helicopter setting is planned for yarding to a landing on the proposed NFS road 3015050.

 ENGINEERING/ROADS:

Unit is accessed by a proposed temporary road in Alternatives 2, 3, and 5, totaling 1,000 feet, as displayed on the unit card.

 BOTANY:

No Concerns

 FISHERIES:

Unit

Number 62 Alternatives 2, 3, 4, 5

Summary of Concerns, Responses, BMPs and Mitigation

 INVASIVE SPECIES:

No Concerns
Unit 62

Streams are tributaries to Thorne River. 

Stream#: 1 Class: I Flagging: B/W C- Type: PAS, PAB

Concerns: none

Buffer (RMA): Class I for PAS and PAB greater of 100 feet, flood plain, riparian vegetation or soils, or riparian associated 

wetland fens. 

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed

Protection: Category A 

Stream#: 1.1L Class: I, IV Flagging: B/W, G/W C- Type: PAO

Concerns: none

Buffer (RMA): Class I for PAO greater of 100 feet, flood plain, riparian vegetation or soils, or riparian associated wetland 

fens. Class IV for PAO none.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed

Protection: Category A and C 

Temporary roads for Unit 62 : Alternatives 2, 3, and 5 -- No known stream crossings. The temporary roads have not been 

field verified and will be surveyed before implementation. If any stream crossings are found, crossings structures and 

locations will be approved by USFS, in consultation with fisheries biologist or hydrologist, prior to construction (BMP 14.17). 

During construction of temporary roads implement BMPs 12.17, 13.10, 13.11, 13.16, 14.3, and 14.5.

 GEOLOGY/KARST:

No Concerns

 HERITAGE RESOURCES:

This unit was investigated per the third amended interagency Programmatic Agreement (PA) for historic properties. As 

specified by the PA, any potential adverse effect on historic properties (if any) was mitigated and portions of the Area of 

Potential Effect will be monitored by a qualified heritage specialist during and/or after actual ground disturbance.

 SCENERY:

The Scenic Integrity Objective (SIO) for this unit is Moderate and Very Low . About 11 acres are in the Recreational River 

LUD, which is given an SIO of Moderate, even though it is mapped as Seldom Seen. The remainder is in Modified 

Landscape LUD, but is also Seldom Seen. The unit is in an area with high Visual Absorption Capability because of varied 

vegetation and flat terrain; the Forest Plan indicates 40 to 60 acres as a typical clearcut size for this VAC and SIO. 

Therefore, scenery resource concerns are minor.

 RECREATION:

A portion of this unit is within the Recreational River LUD. Timber harvest is compatible with the Recreational River LUD in 

this area due to the adjacent LUD being a development LUD (Modified Landscape), and the minor scenery effects.

 SOILS/WETLANDS:

Slopes are less than 25%. The soils and wetlands are suitable for shovel yarding. All logging systems should follow BMPs 

12.5, 13.2 and 13.9. Specifically, the shovel operator should avoid the small non-forested areas of the unit to prevent rutting. 

Slopes over 25% gradient may not be suitable for shovel yarding under some soil moisture conditions. Use care when 

approving shovel yarding on slopes over 25% gradient. Avoid track slippage and rutting. 

There are approximately 8 acres of forested wetland in the eastern half of the unit (BMP12.5).

Alternatives 2, 3, and 5: A temporary road will impact about 0.5 acres of forested wetland for access to the unit. Wetland 

avoidance is not practicable due to the extent of forested wetlands in the unit (BMPs 12.5 and 13.2). Provide adequate cross 

drainage, remove drainage structures, and close road after harvest (BMP 14.9) (33 CFR BMPs 4, 5, 6).

Alternative 4: No new road construction.

 WILDLIFE:

Unit includes average snow deer winter range (entire unit), some of which is also deep snow marten habitat/deer winter 

range (northern end of unit). Legacy standard and guideline does not apply in this VCU.

Alternative 4: Prescription is small patch cuts with only 33% area removal to maintain habitat values.
RR

3015100

929

3015000

3015050

1.2L

1

1.1L

1.2r

1

1

2000

1987

1972

1988

2000 1972

1975

62

65

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 062 Alternative 2 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Partial Cut

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

597.1

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt2.mxd 14 July 2012

RR

SR
RR

3015100

929

3015000

3015050

1.2L

1

1.1L

1.2r

1

1

2000

1987

1972

1988

2000 1972

1975

62

65

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 062 Alternative 3 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

597.1

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt3.mxd 14 July 2012

RR

SR
RR

3015100

929

3015000

3015050

1.2L

1

1.1L

1.2r

1

1

2000

1987

1972

1988

2000 1972

1975

62

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 062 Alternative 4 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

597.1

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt4.mxd 20 March 2012

RR

SR
RR

3015100

929

3015000

3015050

1.2L

1

1.1L

1.2r

1

1

2000

1987

1972

1988

2000 1972

1975

62

65

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 062 Alternative 5 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Sytematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

597.1

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt5.mxd 14 July 2012

RR

SR
Unit 63

Total Unit

Acres:

7.0 Prescription: Clearcut

VCU

Number:

597.

1

Harvest

System:

Shovel

Net Harvest

Volume

(MBF):

179

LUD:

Modified Landscape

 SILVICULTURE:

Existing Condition: This unit has old-growth stand structure. The main damages affecting tree health and volume loss are 

heavy stem decay and moderate mistletoe infection. Windthrow risk is moderate. A previous harvest adjacent to unit on the 

western edge has met green-up with regeneration over 5 foot tall and meets NFMA requirements for no longer being 

considered an opening.

Silvicultural Objective/Desired Condition: The desired condition for this stand is a highly productive, healthy, windfirm stand 

grown for timber management that retains residual trees as needed to meet standards and guides or other objectives. 

Silvicultural Prescription: Even-age Management-Clearcut

This stand is being recommended for harvest at this time because it is not expected to obtain the desired condition given the 

current growth trajectory. This stand is over-mature with high stem decay and defect resulting in a situation where stand 

growth is being offset or exceeded by decay. Even-aged clear cutting is being prescribed to preclude or minimize the risk of 

windthrow post harvest, promote natural regeneration by opening up the canopy, and minimize defect and disease in the 

future stand to the maximum extent possible.

 TIMBER/LOGGING:

This unit is planned for shovel yarding to the proposed temporarary road.

 ENGINEERING/ROADS:

Unit is accessed by a proposed temporary road, totaling 600 feet, as displayed on the unit card. Road was routed to avoid 

large sensitive plant population (see Botany).

 BOTANY:

About 17% of a lesser round-leaved orchid (sensitive plant) population containing 58 plants impacted by unit (retained in unit 

due to small unit size) and size of population area outside of unit. 

Unit indirectly affects remainder of population located northeast of unit.

Road location was moved south to avoid the orchid population.

 FISHERIES:

Streams are tributaries to Thorne River.

All streams in unit: Class: IV Flagging: G/W C- Type: HC or MM

Buffer (RMA): none Buffer (RAW): no review needed

Protection: Category C 

Temporary roads for Unit 63: Alternatives 2, 3, and 5 -- No known stream crossings. The temporary roads have not been 

field verified and will be surveyed before implementation. If any stream crossings are found, crossings structures and 

locations will be approved by USFS, in consultation with fisheries biologist or hydrologist, prior to construction (BMP 14.17). 

During construction of temporary roads implement BMPs 12.17, 13.10, 13.11, 13.16, 14.3, and 14.5.

 GEOLOGY/KARST:

No Concerns

 HERITAGE RESOURCES:

Unit

Number 63 Alternatives 2, 3, 5

Summary of Concerns, Responses, BMPs and Mitigation

 INVASIVE SPECIES:

No Concerns
Unit 63

This unit was investigated per the third amended interagency Programmatic Agreement (PA) for historic properties. As 

specified by the PA, any potential adverse effect on historic properties (if any) was mitigated and portions of the Area of 

Potential Effect will be monitored by a qualified heritage specialist during and/or after actual ground disturbance.

 SCENERY:

The Scenic Integrity Objective (SIO) for this unit is Very Low . It is in Modified Landscape LUD and is considered Seldom 

Seen. There are no scenery resource concerns.

 RECREATION:

No concerns; however, unit is adjacent to the Recreation River LUD on the southeast.

 SOILS/WETLANDS:

Slopes are less than 25%. There is approximately 1 acre of emergent short sedge/forested wetland complex located in the 

northern portion of the unit (BMP 12.5).The soils and wetlands are suitable for shovel yarding. Shovel yarding should follow 

BMPs 12.5, 13.2 and 13.9. Specifically, the shovel operator should avoid the small non-forested areas of the unit to prevent 

rutting. Slopes over 25% gradient may not be suitable for shovel yarding under some soil moisture conditions. Use care 

when approving shovel yarding on slopes over 25% gradient. Avoid track slippage and rutting.

The proposed temporary road does not traverse any wetlands.

 WILDLIFE:

Unit includes average snow deer winter range (entire unit), some of which is also deep snow marten habitat/deer winter 

range (southern tip of unit). Legacy standard and guideline does not apply in this VCU.

Alternative 4: Unit dropped from Alternative 4 to avoid sensitive plants and maintain habitat values.
RR

RR

SR

3015050

3015050

1

2. L

1 1. L

1

1989

1990

1988

1990

1988

63

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 063 Alternative 2 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Partial Cut

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

597.1

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt2.mxd 14 July 2012

RR

SR
RR

RR

SR

3015050

3015050

1

2. L

1 1. L

1

1989

1990

1988

1990

1988

63

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 063 Alternative 3 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

597.1

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt3.mxd 14 July 2012

RR

SR
RR

RR

SR

3015050

3015050

1

2. L

1 1. L

1

1989

1990

1988

1990

1988

63

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 063 Alternative 5 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Sytematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

597.1

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt5.mxd 14 July 2012

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Unit 65

Total Unit

Acres:

11.6 Prescription: Clearcut

VCU

Number:

578 Harvest

System:

Shovel, 

Helicopter

Net Harvest

Volume

(MBF):

213

LUD:

Timber Production

 SILVICULTURE:

Existing Condition: This unit has old growth structure. The major damage agents affecting overall tree health and volume loss 

are moderate stem decay and moderate mistletoe infection. Only widely scattered larger diameter Western hemlock were 

noted as being over-mature. The vast majority of the unit is mature timber in the small to medium diameter classes. A 

previous harvest adjacent to unit on the northwestern edge has met green-up with regeneration over 5 foot tall and meets 

NFMA requirements for no longer being considered an opening.

Silvicultural Objective/Desired Condition: The desired condition for this stand is a highly productive, healthy, windfirm stand 

grown for timber management that retains residual trees as needed to meet standards and guides or other objectives. 

Silvicultural Prescription: Even-age Management - Clearcut

This stand is being recommended for harvest at this time because it is not expected to obtain the desired condition given the 

current growth trajectory. This stand is mature with moderate stem decay and defect resulting in a situation where stand 

growth is being offset by decay. Even-aged clear cutting is being prescribed to preclude or minimize the risk of windthrow 

post harvest, promote natural regeneration by opening up the canopy, and minimize defect and disease in the future stand to 

the maximum extent possible.

 TIMBER/LOGGING:

Alternatives 2, 3: This unit is planned for shovel yarding to the proposed temporary road. 

Alternative 5: This unit is planned for helicopter yarding to the existing NFS road 3015200.

 ENGINEERING/ROADS:

In Alternatives 2 and 3, unit is accessed by a proposed temporary road, totaling 4,400 feet, as displayed on the unit card. 

Approximately 2,500 feet of this road will be constructed across decommissioned road bed.

No new road construction under Alternative 5.

 BOTANY:

Half of lesser round-leaved orchid (sensitive plant) population in unit. Part of population in harvested area due to small unit 

size and few plants in population (3 plants).

Unit indirectly affects remainder of population, located southwest of unit.

 FISHERIES:

Streams are tributaries to Thorne River. 

Stream#: 1.2R Class: I, IV Flagging: B/W, G/W C- Type: MMO, PAB

Concerns: blowdown

Buffer (RMA): Class I - greater of 120 feet (MMO) or 100 feet (PAB), flood plain, riparian vegetation or soils, or riparian 

associated wetland fens. Class IV for PAB none.

Alternatvies: 2, 3, and 5 Buffer (RAW): no review needed

Protection: Category A and C 

Temporary roads for Unit 65: Alternatives 2 and 3 -- One Class 1 stream crossing. The temporary road has not been field 

verified and will be surveyed before implementation. Crossing structures and locations will be approved by USFS, in 

consultation with fisheries biologist or hydrologist, prior to construction (BMP 14.17). The Class I crossing will be designed to 

provide fish passage, using a log culvert or bridge, will be installed under current timing constrictions and concurrence from 

the State will be solicited prior to starting the work. During construction of temporary roads implement BMPs 12.17, 13.10, 

Unit

Number 65 Alternatives 2, 3, 5

Summary of Concerns, Responses, BMPs and Mitigation

 INVASIVE SPECIES:

No Concerns
Unit 65

13.11, 13.16, 14.3, and 14.5.

 GEOLOGY/KARST:

No Concerns

 HERITAGE RESOURCES:

This unit was investigated per the third amended interagency Programmatic Agreement (PA) for historic properties. As 

specified by the PA, any potential adverse effect on historic properties (if any) was mitigated and portions of the Area of 

Potential Effect will be monitored by a qualified heritage specialist during and/or after actual ground disturbance.

 SCENERY:

The Scenic Integrity Objective (SIO) for this unit is Very Low . It is in Timber Production LUD and is considered Not Seen. 

There are no scenery resource concerns.

 RECREATION:

No concerns

 SOILS/WETLANDS:

Alternatives 2, 3, and 5: Slopes range from less than 10% to 50%. The majority of the unit averages 25% with rocky knobs 

throughout the unit that can be operated around. Forested wetlands are located throughout the southern boundary of the 

unit. The soils and wetlands are suitable for minimum partial suspension yarding or shovel yarding. All logging systems 

should follow BMPs 12.5, 13.2 and 13.9. Specifically, the shovel operator should avoid the small non-forested areas of the 

unit to prevent rutting. Slopes over 25% gradient may not be suitable for shovel yarding under some soil moisture conditions. 

Use care when approving shovel yarding on slopes over 25% gradient. Avoid track slippage and rutting.

Alternatives 2 and 3: The proposed temporary road does not traverse any wetlands.

 WILDLIFE:

Unit includes average snow deer winter range (entire unit except southern edge), all of which is also deep snow marten 

habitat/deer winter range. Legacy standard and guideline does not apply in this VCU.

Alternative 4: Unit dropped to reduce road construction (and effects to wildlife associated with increased access) and 

maintain habitat values.
3015000

3015050

3015050

3015100

3015200

1.4R

1.2L

1

1

.1L

2

1.1L

1.2r

1

1

1.4R

1

1

1.4R.1R

2000

2000 1966

1987

1972

2000

1975

1988

1972

1966

65

68

70 71

62

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 065 Alternative 2 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Partial Cut

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

578

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3015100

3015050

3015050

3015200

3015000

1.

1.4R.1R

1.4R

1.2L

1

1

1.1L

2

1.1L

1.2r

1

1

2000

1966

1987

1972

1966

1988

2000 1972

1975

62

65

68

70 71

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 065 Alternative 3 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

578

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RR

SR
3015000

3015050

3015208

3015200

3015200

1.2L

1.6L

1

1.1L

1.5L

1

1.1L

1

1.2r

1

1

1.4R

1.3R

1.4R.1R

1.7L

1

1.4R

2000

2000

1987 1972

1988

1972

2000

1975

1988

65

66

68

70

71

62

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 065 Alternative 5 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Sytematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

578

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt5.mxd 14 July 2012

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Unit 66

Total Unit

Acres:

2, 3, 5 - 25.5

4 - 24.6

Prescription: 2, 3, 5 - Clearcut

4 - 33% Removal

VCU

Number:

578 Harvest

System:

Shovel, 

Helicopter

Net Harvest

Volume

(MBF):

2, 3, 5 - 486

4 - 154 LUD:

Timber Production

 SILVICULTURE:

Existing Condition: This unit has old-growth stand structure. The main damage agents affecting tree health are moderate 

mistletoe and heart/stem decay. Physical defects are high overall. Windthrow risk is moderate. Past even-age harvest with 

origins in 1990 and 1988 are along the southern and southwestern boundaries. These areas have met green-up with 

regeneration over 5 foot tall and meets NFMA requirements for no longer being considered an opening.

Silvicultural Objective/Desired Condition: The desired condition for this stand is a highly productive, healthy, windfirm stand 

grown for timber management that retains residual trees as needed to meet standards and guides or other objectives. 

Silvicultural Prescription: Even-age Management - Clearcut (Alternatives 2, 3, and 5)

This stand is being recommended for harvest at this time because it is not expected to obtain the desired condition given the 

current growth trajectory. This stand is mature with moderate stem decay and high physical defects resulting in a situation 

where stand growth is being offset by decay. Even-aged clear cutting is being prescribed to preclude or minimize the risk of 

windthrow post harvest, promote natural regeneration by opening up the canopy, and minimize defect and disease in the 

future stand to the maximum extent possible.

Silvicultural Prescription: Uneven-age Management Group Selection (Alternative 4)

Harvest up to 33% of the planned setting acreage in groups of trees up to 2 acres in size. Group selections should be well 

distributed across the stand. Locate groups to address insect and disease issues or capitalize on existing advanced 

regeneration of desirable tree species where possible. Locate group selections to maintain wildlife travel ways and important 

habitat while maximizing the economics of this entry and also maintaining the feasibility of future harvest entries in the 

remaining old growth portions of the unit. The uneven-aged group selection regeneration method is being prescribed for the 

unit or portions of the unit as a means to maintain large amounts of diverse structure to benefit wildlife over time.

 TIMBER/LOGGING:

Alternatives 2, 3, 5: This unit is planned for shovel yarding to proposed NFS road 3015052. 

Alternative 4: This unit is planned for helicopter yarding to a landing on the existing NFS road 3015051.

 ENGINEERING/ROADS:

Unit is accessed by proposed NFS road 3015052 in Alternatives 2, 3, and 5, totaling 1,700 feet, as displayed on the unit card.

 BOTANY:

Alternatives 2, 3, and 5:

One lesser round-leaved orchid (sensitive plant) population completely deferred (18 plants), and about 70% of another lesser 

round-leaved orchid population with 39 plants is in harvest area. Rationale for unit design preserves portions of each 

population.

Unit indirectly affects populations located to the northwest of the unit.

Alternative 4:

Both populations deferred and out of unit.

Unit indirectly affects both populations, located to the northwest of the unit.

 FISHERIES:

Unit

Number 66 Alternatives 2, 3, 4, 5

Summary of Concerns, Responses, BMPs and Mitigation

 INVASIVE SPECIES:

No Concerns
Unit 66

Streams are tributaries to Thorne River. 

All streams in unit: Class: IV Flagging: G/W C- Type: PA

Buffer (RMA): none Buffer (RAW): no review needed

Protection: Category C

 GEOLOGY/KARST:

No Concerns

 HERITAGE RESOURCES:

This unit was investigated per the third amended interagency Programmatic Agreement (PA) for historic properties. As 

specified by the PA, any potential adverse effect on historic properties (if any) was mitigated and portions of the Area of 

Potential Effect will be monitored by a qualified heritage specialist during and/or after actual ground disturbance.

 SCENERY:

The Scenic Integrity Objective (SIO) for this unit is Very Low . It is in Timber Production LUD and is considered Not Seen. 

There are no scenery resource concerns.

 RECREATION:

No concerns

 SOILS/WETLANDS:

Slopes are less than 25%. The soils and wetlands are suitable for minimum partial suspension yarding or shovel yarding. All 

logging systems should follow BMPs 12.5, 13.2 and 13.9. Specifically, the shovel operator should avoid the small nonforested areas of the unit to prevent rutting. Slopes over 25% gradient may not be suitable for shovel yarding under some soil 

moisture conditions. Use care when approving shovel yarding on slopes over 25% gradient. Avoid track slippage and rutting.

Alternatives 2, 3, and 5: There are approximately 7 acres (26% of the unit) of forested wetland in the eastern half of the unit 

(BMP12.5). The proposed temporary road would 

Alternative 4: There are approximately 6 acres (27% of the unit) of forested wetland in the eastern half of the unit (BMP12.5).

 WILDLIFE:

Unit includes average snow deer winter range (all of unit except eastern edge), some of which is also deep snow martent 

habitat/deer winter range (south central portion). Unit is near Honker large OGR complex. Goshawk observed to west of unit 

in 2011, approx. 2,000 ft s/sw of proposed road. Legacy standard and guideline does not apply in this VCU.

Alternative 4: Western portion of unit and a portion of the proposed road dropped to avoid sensitive plants. Prescription is 

group selection with 33% basal area removal to minimize impacts to wolves and connectivity, maintain other habitat values.
3015208

3015051

3015050

3015200

3015052

2

1.3R

1

1.6L

2.6L.1 L

1.5L

2

2.5 L

2.6L

1

1989

1990

1987

1988

1990

1988

65

66

71

72

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 066 Alternative 2 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Partial Cut

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

578,597.1

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3015208

3015051

3015050

3015200

3015052

2

1.3R

1

1.6L

2.6L.1 L

1.5L

2

2.5 L

2.6L

1

1989

1990

1987

1988

1990

1988

65

66

71

72

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 066 Alternative 3 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

578,597.1

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3015208

3015051

3015050

3015200

2

1.3R

1

1.6L

2.6L.1 L

1.5L

2

2.5 L

2.6L

1

1989

1990

1987

1988

1990

1988

66

71

72

73

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 066 Alternative 4 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

578,597.1

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3015208

3015051

3015050

3015200

3015052

2

1.3R

1

1.6L

2.6L.1 L

1.5L

2

2.5 L

2.6L

1

1989

1990

1987

1988

1990

1988

65

66

71

72

73

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 066 Alternative 5 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Sytematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

578,597.1

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Unit 67

Total Unit

Acres:

6.6 Prescription: Clearcut

VCU

Number:

578 Harvest

System:

Helicopter

Net Harvest

Volume

(MBF):

90

LUD:

Timber Production

 SILVICULTURE:

Existing Condition: This unit has old-growth stand structure. The area is almost entirely Western hemlock. Mistletoe 

infections and stem decay are generally high. Windthrow risk is moderate. A past harvest area is in close proximity to the unit 

along the northeast corner. This harvest has met green-up with regeneration over 5 foot tall and meets NFMA requirements 

for no longer being considered an opening.

Silvicultural Objective/Desired Condition: The desired condition for this stand is a highly productive, healthy, windfirm stand 

grown for timber management that retains residual trees as needed to meet standards and guides or other objectives. 

Silvicultural Prescription: Even-age Management -Clearcut

This stand is being recommended for harvest at this time because it is not expected to obtain the desired condition given the 

current growth trajectory. This stand is over-mature with high stem decay and defect resulting in a situation where stand 

growth is being offset by decay. Even-aged clear cutting is being prescribed to preclude or minimize the risk of windthrow 

post harvest, promote natural regeneration by opening up the canopy, and minimize defect and disease in the future stand to 

the maximum extent possible.

 TIMBER/LOGGING:

This unit is planned for helicopter yarding to a landing on the existing NFS road 3015051.

 ENGINEERING/ROADS:

No proposed road construction.

 BOTANY:

No Concerns

 FISHERIES:

Streams are tributaries to Thorne River. 

Stream#: 2.2R Class: I Flagging: B/W C- Type: PAS

Concerns: none

Buffer (RMA): Class I for PAS greater of 100 feet, flood plain, riparian vegetation or soils, or riparian associated wetland 

fens. 

Alternatives: 2, 3, and 4 Buffer (RAW): no review needed

Protection: Category A

Stream#: 2.2R.1L Class: I, II Flagging: B/W C- Type: PAO, MMO

Concerns: none

Buffer (RMA): Class I and II - greater of 100 feet (PAO) or 120 feet (MMO), flood plain, riparian vegetation or soils, or riparian 

associated wetland fens. 

Alternatives: 2, 3, and 4 Buffer (RAW): Will be identified by IDT during layout.

Protection: Category A

 GEOLOGY/KARST:

No Concerns

 HERITAGE RESOURCES:

This unit was investigated per the third amended interagency Programmatic Agreement (PA) for historic properties. As 

specified by the PA, any potential adverse effect on historic properties (if any) was mitigated and portions of the Area of 

Potential Effect will be monitored by a qualified heritage specialist during and/or after actual ground disturbance.

Unit

Number 67 Alternatives 2, 3, 4

Summary of Concerns, Responses, BMPs and Mitigation

 INVASIVE SPECIES:

No Concerns
Unit 67

 SCENERY:

The Scenic Integrity Objective (SIO) for this unit is Very Low . It is in Timber Production LUD and is considered Not Seen. 

There are no scenery resource concerns. However, unit is adjacent to Scenic River LUD on the northwest.

 RECREATION:

No concerns, however, unit touches the boundary of the Scenic River LUD on the northwest.

 SOILS/WETLANDS:

Slopes are less than 25%. Forested wetlands cover the entire unit. A minimum of partial suspension would meet soil and 

wetland resource concerns (BMPs 12.5, 13.5, and 13.9).

 WILDLIFE:

Unit includes average snow deer winter range (entire unit), all of which is also deep snow marten habitat/deer winter range. 

Unit is near Honker large OGR complex. Legacy standard and guideline does not apply in this VCU.
SR

3015050

3015051

2.6L.1L

2

2

2.2R.1L

2.1R

2.4 L

2.5 L

2.6L

3

2.2 R

1989

1990

1990

67

72

74

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 067 Alternative 2 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Partial Cut

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

578

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RR

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SR

3015050

3015051

2.6L.1L

2

2

2.2R.1L

2.1R

2.4 L

2.5 L

2.6L

3

2.2 R

1989

1990

1990

67

72

74

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 067 Alternative 3 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

578

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt3.mxd 14 July 2012

RR

SR
SR

3015050

3015051

2.6L.1L

2

2

2.2R.1L

2.1R

2.4 L

2.5 L

2.6L

3

2.2 R

1989

1990

1990

67

72

73

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 067 Alternative 4 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

578

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt4.mxd 20 March 2012

RR

SR
Unit 68

Total Unit

Acres:

42.0 Prescription: 2, 3, 5 - Clearcut

4 - 33% Removal

VCU

Number:

578,

 579

Harvest

System:

Shovel, 

Helicopter

Net Harvest

Volume

(MBF):

2, 3, 5 - 812

4 - 268 LUD:

Modified Landscape, 

Timber Production

 SILVICULTURE:

Existing Condition: This unit has old-growth stand structure. The overstory has moderate to high defect with stem decay and 

mistletoe being the major damage agents affecting tree health and volume loss. Mistletoe rating was moderate to high over 

most of the unit. Areas with pure western hemlock have heavy mistletoe infections. Windthrow risk is low. All previous 

harvest areas adjacent to the unit have met green-up with regeneration over 5 foot tall meeting NFMA requirements for no 

longer being considered an opening.

Silvicultural Objective/Desired Condition: The desired condition for this stand is a highly productive, healthy, windfirm stand 

grown for timber management that retains residual trees as needed to meet standards and guides or other objectives. 

Silvicultural Prescription: Even-age Management - Clearcut (Alternatives 2, 3, and 5)

This stand is being recommended for harvest at this time because it is not expected to obtain the desired condition given the 

current growth trajectory. This stand is over-mature with moderate stem decay and defect resulting in a situation where stand 

growth is being offset by decay. Even-aged clear cutting is being prescribed to preclude or minimize the risk of windthrow 

post harvest, promote natural regeneration by opening up the canopy, and minimize defect and disease in the future stand to 

the maximum extent possible. 

The legacy standard and guide applies in VCU 5790 which represents about 12 acres of the unit along its northeastern 

boundary. However, the portion of the original planned unit in this VCU does not exceed 20 acres and so no legacy set aside 

is required. 

Silvicultural Prescription: Uneven-age Management Group Selection (Alternative 4)

Harvest up to 33% of the planned setting acreage in groups of trees up to two acres in size. Group selections should be well 

distributed across the stand. Locate groups to address insect and disease issues or capitalize on existing advanced 

regeneration of desirable tree species where possible. Locate group selections to maintain wildlife travel ways and important 

habitat while maximizing the economics of this entry and also maintaining the feasibility of future harvest entries in the 

remaining old growth portions of the unit. The uneven-aged group selection regeneration method is being prescribed for the 

unit or portions of the unit as a means to maintain large amounts of diverse structure to benefit wildlife over time.

 TIMBER/LOGGING:

Alternatives 2, 3, 5: This unit is planned for shovel yarding to the proposed temporary road and existing NFS road 3015100.

Alternative 4: This unit is planned for a combination of shovel and helicopter yarding. Shovel settings are planned for yarding 

to the existing NFS road 3015100. Helicopter settings are planned for yarding to a landing on existing road 3015000.

 ENGINEERING/ROADS:

Unit is accessed by a proposed temporary road in Alternatives 2,3, and 5, totaling 2,000 feet, as displayed on the unit card.

 BOTANY:

No Concerns

 FISHERIES:

Unit

Number 68 Alternatives 2, 3, 4, 5

Summary of Concerns, Responses, BMPs and Mitigation

 INVASIVE SPECIES:

Infestation of common tansy located in unit along 3015100 road. Infestation has been treated; monitoring has not observed 

continued infestations. This location should be monitored and treated if plants are observed.
Unit 68

Streams are tributaries to Thorne River and Falls Creek. 

Stream#: 1 Class: I Flagging: B/W C- Type: HCL, MMS, HCM

Concerns: none

Buffer (RMA): Class I for HCL and HCM greater of 100 feet or to the top of the side-slope break. Class I for MMS greater of 

120 feet, floodplain, riparian vegetation or soils, or riparian associated wetland fens.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed

Protection: Category A 

Stream#: 1.1L Class: I Flagging: B/W C- Type: MMO

Concerns: none

Buffer (RMA): Class I for MMO greater of 120 feet, flood plain, riparian or soils, or riparian associated wetland fens.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed

Protection: Category A 

Stream#: 2 Class: I, II Flagging: B/W C- Type: PAO, HCO

Concerns: blowdown

Buffer (RMA): Class I for PAO greater of 100 feet or flood plain, riparian or soils, or riparian associated wetland fens. Class 

II for HCO greater of 100 feet or the top of the side-slope break.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed

Protection: Category A 

Stream#: 3 Class: I Flagging: B/W C- Type: PAB

Concerns: none

Buffer (RMA): Class I for PAB greater of 100 feet or flood plain, riparian or soils, or riparian associated wetland fens. 

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed

Protection: Category A 

Stream#: Lake-A1 Class: I Flagging: B/W C- Type: L

Concerns: none

Buffer (RMA): Class I for Lake-1 greater of 100 horizontal feet or to the extent of the flood plain, riparian vegetation or soils, 

riparian associated wetland fens, or one site-potential tree height. 

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed

Protection: Category A 

Temporary roads for Unit 68: Alternatives 2, 3 and 5 -- No known stream crossings. The temporary road has not been field 

verified and will be surveyed before implementation. If any stream crossings are found, crossings structures and locations 

will be approved by USFS, in consultation with fisheries biologist or hydrologist, prior to construction (BMP 14.17). During 

construction of temporary roads implement BMPs 12.17, 13.10, 13.11, 13.16, 14.3, and 14.5.

 GEOLOGY/KARST:

No Concerns

 HERITAGE RESOURCES:

This unit was investigated per the third amended interagency Programmatic Agreement (PA) for historic properties. As 

specified by the PA, any potential adverse effect on historic properties (if any) was mitigated and portions of the Area of 

Potential Effect will be monitored by a qualified heritage specialist during and/or after actual ground disturbance.

 SCENERY:

The Scenic Integrity Objective (SIO) for this unit is Very Low . It is mostly in Timber Production LUD and is considered Not 

Seen. There are no scenery resource concerns.

 RECREATION:

No concerns

 SOILS/WETLANDS:

Slopes range from nearly level to about 50%. Most slopes are less than 25%. No wetlands have been identified in the unit. 

The soils and wetlands are suitable for minimum partial suspension yarding or shovel yarding. All logging systems should 

follow BMPs 12.5, 13.2 and 13.9. Specifically, the shovel operator should avoid the small non-forested areas of the unit to 

prevent rutting. Slopes over 25% gradient may not be suitable for shovel yarding under some soil moisture conditions. Use 

care when approving shovel yarding on slopes over 25% gradient. Avoid track slippage and rutting.

The proposed temporary road does not traverse any wetlands.
Unit 68

 WILDLIFE:

Unit includes average snow deer winter range (entire unit), most of which is also deep snow marten habitat/deer winter range 

(all but northern setting). Unit is near Honker large OGR complex. About 12 acres of this unit, along its northeastern 

boundary, are in VCU 5790 which requires the Legacy standard and guideline; however, there are no requirements for this 

unit because the portion of the original planned unit in VCU 5790 is less than 20 acres.

Alternative 4: Prescription is small patch cuts with 33% area removal to minimize impacts to wolves and connectivity, and 

maintain other habitat values. No Legacy acres required.
RR

LAKE A1

3015100

3015100

3015000

3015105

3015106

2.2L. 1 R.1L

1.2r

2

2

3

1

1.1L

1

2.2L.1R.3L

2.2L.1R2

.3L

.2L.1R

2.2L.1R.1L.1R

2.2L.1R.2L

2

2. L.1R

1

2.2L.1R

2.2 L.1R.1L

2.2L.1R

2.2L.1R.3L.1R

2000

1966

1988

1966

1966

1966

1972

2000

1972

1966

1972

69

68

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 068 Alternative 2 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Partial Cut

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

578,579

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt2.mxd 14 July 2012

RR

SR
RR

LAKE A1

3015100

3015000

3015105

3015100

3015106

2.2L.1R

2.2L.1R

2.2L.1R.3L.1R

2.2L. 1 R.1L

1.2r

2

2

3

1.1L

1

1

2.2L.1R.1L.1R

2.2L.1R.3L

2.2L.1R2

.3L

.2L.1R

2.2 L.1R.1L

2.2L.1R.2L

2

2. L.1R

1

1966

2000

1966

1988

1966

2000

1972

1966

1972

1966

1972

69

517

517

517

517

68

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 068 Alternative 3 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

578,579

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt3.mxd 14 July 2012

RR

SR
RR

LAKE A1

3015100

3015000

3015105

3015100

3015106

2.2L.1R

2.2L.1R

2.2L.1R.3L.1R

2.2L. 1 R.1L

1.2r

2

2

3

1.1L

1

1

2.2L.1R.1L.1R

2.2L.1R.3L

2.2L.1R2

.3L

.2L.1R

2.2 L .1R.1L

2.2L.1R.2L

2

2. L.1R

1

1966

2000

1966

1988

1966

2000

1972

1966

1972

1966

1972

69

517

517

517

517

68

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 068 Alternative 4 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

578,579

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt4.mxd 20 March 2012

RR

SR
RR

LAKE A1

3015100

3015000

3015105

3015100

3015106

2.2L.1R

2.2L.1R

2.2L.1R.3L.1R

2.2L. 1 R.1L

1.2r

2

2

3

1.1L

1

1

2.2L.1R.1L.1R

2.2L.1R.3L

2.2L.1R2

.3L

.2L.1R

2.2 L .1R.1L

2.2L.1R.2L

2

2. L.1R

1

1966

2000

1966

1988

1966

2000

1972

1966

1972

1966

1972

69

517

517

517

517

68

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 068 Alternative 5 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Sytematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

578,579

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt5.mxd 14 July 2012

RR

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Unit 69

Total Unit

Acres:

72.0 Prescription: Clearcut

VCU

Number:

579 Harvest

System:

Shovel, 

Helicopter

Net Harvest

Volume

(MBF):

1,643

LUD:

Modified Landscape

 SILVICULTURE:

Existing Condition: This unit has old-growth stand structure. The overstory is moderate defect with stem decay and poor stem 

form resulting in the majority of defect deductions. Mistletoe rating is moderate overall. Some dead tops and thinning tops 

were noted, particularly in the western redcedar. All previous harvest areas adjacent to the unit have met green-up with 

regeneration over 5 foot tall meeting NFMA requirements for no longer being considered an opening.

Silvicultural Objective/Desired Condition: The desired condition for this stand is a highly productive, healthy, windfirm stand 

grown for timber management that retains residual trees as needed to meet standards and guides or other objectives. 

Silvicultural Prescription: Even-age Management 

This stand is being recommended for harvest at this time because it is not expected to obtain the desired condition given the 

current growth trajectory. This stand is mature to over-mature with moderate stem decay and defect resulting in a situation 

where stand growth is being offset or exceeded by decay. Even-aged clear cutting is being prescribed to preclude or 

minimize the risk of windthrow post harvest, promote natural regeneration by opening up the canopy, and minimize defect 

and disease in the future stand to the maximum extent possible. 

The legacy standard and guideline applies in this VCU. This requires that 30% or about 32 acres of the entire planned unit 

area be retained in productive old growth representative of the overall composition of the planned harvest area. This 

retention is to be maintained indefinitely. The required legacy structure for this unit is planned for RMAs, to protect a 

sensitive plant population, to promote larger blocks of POG, and to substantially reduce required road length. Total mapped 

legacy acres equals 32. Adjustments to the planned legacy location during implementation are allowed; however any 

changes must meet the required acreage and follow a similar strategy for legacy placement.

 TIMBER/LOGGING:

Alternatives 2, 3, 5: This unit is planned for shovel yarding to the proposed NFS road 3015106 and proposed temporary road. 

Alternative 4: This unit is planned for a combination of shovel and helicopter yarding. Shovel settings are planned for yarding 

to the proposed NFS road 3015106. Helicopter settings are planned for yarding to a landing on the existing NFS road 

3015105.

 ENGINEERING/ROADS:

Unit is accessed by proposed NFS road 3015106, totaling 3,400 feet, in Alternatives 2, 3, 4, and 5, and a proposed 

temporary road in Alternatives 2, 3, and 5. The proposed temporary road totals 700 feet, as displayed on the unit card. See 

road card for detailed information on the proposed NFS road.

 BOTANY:

Lesser round-leaved orchid (sensitive plant) population occurs in original planned unit but is entirely within legacy. Entire 

population (of 2 plants) preserved due to location near outer extent of plant distribution in the area. 

Lesser round-leaved orchid population indirectly affected (in Legacy, as noted above) near west-central portion of unit.

 FISHERIES:

Unit

Number 69 Alternatives 2, 3, 4, 5

Summary of Concerns, Responses, BMPs and Mitigation

 INVASIVE SPECIES:

No Concerns
Unit 69

Streams are tributaries to Thorne River and Fall Creek. 

Stream#: 1.1R Class: III , IV Flagging: O/W, G/W C- Type: HCM, HCO

Concerns: none

Buffer (RMA): Class III for HCM greater of 100 feet or the side-slope break. Class IV for HCO none.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed

Protection: Category B and C 

Stream#: 1.2R Class: III , IV Flagging: O/W, G/W C- Type: HCO

Concerns: none

Buffer (RMA): Class III for HCO greater of 100 feet or to the top of the side-slope break. Class IV for HCO none.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed

Protection: Category B and C 

Stream#: 1.3R Class: II, III, IV Flagging: B/W, O/W, G/W C- Type: HCO 

Concerns: none

Buffer (RMA): Class II for HCO greater of 100 feet or to the top of the side-slope break. Class III for HCO to the top of the 

side-slope break. Class IV for HCO none.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed

Protection: Category A, B, and C 

Stream#: 1.5R Class: III, IV Flagging: O/W, G/W C- Type: HCM, HCO

Concerns: blowdown and steep side-slopes

Buffer (RMA): Class III for HCM to the top of the side-slope break. Class IV for HCO none.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): Will be identified by IDT during layout. 

Protection: Category B and C 

Stream#: 1.6R Class: III Flagging: O/W C- Type: HCM, AFH 

Concerns: blowdown, active erosion, and steep side-slopes with mobile sediment

Buffer (RMA): Class III for HCM to the top of the side-slope break. Class III for AFH greater of 140 feet or active portion of 

alluvial fan.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): Will be identified by IDT during layout. 

Protection: Category B 

Stream#: 2.2L.1R Class: I, II Flagging: B/W C- Type: AFH, HCV,HCD, HCM

Concerns: active erosion, steep side-slopes and debris flows

Buffer (RMA): Class I for AFH greater of 140 feet or active portion of the alluvial fan. Class II for HCV, HCD, and HCM 

greater of 100 feet or to the top of the side-slope break.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed

Protection: Category A and B 

Stream#: 2.2L.1R.3L Class: III, IV Flagging: O/W, G/W C- Type: HCO, HCLw

Concerns: none

Buffer (RMA): Class III for HCO to the top of the side-slope break. Class IV for HCO none.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed

Protection: Category B and C 

Stream#: 2.2L.1R.3L.1R Class: III, IV Flagging: O/W, G/W C- Type: HCO

Concerns: none

Buffer (RMA): Class III for HCO to the top of the side-slope break. Class IV for HCO none.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed

Protection: Category B and C 

All other streams in unit: Class: IV Flagging: G/W C- Type: HC

Buffer (RMA): none Buffer (RAW): no review needed

Protection: Category C 

Temporary roads for Unit 69: Alternatives 2, 3, and 5 -- No known stream crossings. The temporary roads have not been 

field verified and will be surveyed before implementation. If any stream crossings are found, crossings structures and 

locations will be approved by USFS, in consultation with fisheries biologist or hydrologist, prior to construction (BMP 14.17). 

During construction of temporary roads implement BMPs 12.17, 13.10, 13.11, 13.16, 14.3, and 14.5.

 GEOLOGY/KARST:

No Concerns
Unit 69

 HERITAGE RESOURCES:

This unit was investigated per the third amended interagency Programmatic Agreement (PA) for historic properties. As 

specified by the PA, any potential adverse effect on historic properties (if any) was mitigated and portions of the Area of 

Potential Effect will be monitored by a qualified heritage specialist during and/or after actual ground disturbance.

 SCENERY:

The Scenic Integrity Objectives (SIO) of this unit are Low and Very Low, with the Low SIO covering about 24 acres. The unit 

is entirely in Modified Landscape LUD and the Low SIO areas are the higher elevations of the unit which have a 

Middleground distance zone designation. The Low SIO area is more than 1 mile from the Thorne Bay-Control Lake highway, 

which is a Visual Priority Travel Route. No concerns.

 RECREATION:

No concerns

 SOILS/WETLANDS:

Slopes range from nearly level to about 37%. No wetlands have been mapped in the unit. The soils and wetlands are suitable 

for minimum partial suspension yarding or shovel yarding. All logging systems should follow BMPs 12.5, 13.2 and 13.9. 

Specifically, the shovel operator should avoid the small non-forested areas of the unit to prevent rutting. Slopes over 25% 

gradient may not be suitable for shovel yarding under some soil moisture conditions. Use care when approving shovel 

yarding on slopes over 25% gradient. Avoid track slippage and rutting.

Alternative 2, 3, and 5: The proposed temporary road does not traverse any wetlands.

 WILDLIFE:

Unit include average snow deer winter range (entire unit), most of which is also deep snow marten habitat/deer winter range 

(northern 1/2 of unit). Unit is near Honker large OGR complex. Legacy standard and guideline applies in this VCU; Legacy 

acres cover some deer winter range/marten habitat.

Alternative 4: Helicopter yarding in southern portion of unit to minimize impacts to wolves and minimize road building and 

effects to wildlife associated with increased access.
3015108

3015100

3015105

3015107

3015106

1.4R

2.2L.1R.3L.1R

1.3R

2.2L.1R

1

2.2L.1R.2L

1.1R

1.1L

2.2L.1R.

2.2L.1R 1.5R

2.2L.1R.3L

2.2L.1R

2.2L.12R.3L

.2L.1R

1 6. R.1L

1.6R

2.2L 1. R

1.5R.1L

2.2L.1R.1R

1.5R.2R

1.5R

1.2R

1

1966

1966

1966

1988

1995

1995

1972

1966

1966

1966

1966

69

68

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 069 Alternative 2 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Partial Cut

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

579

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt2.mxd 14 July 2012

RR

SR
3015100

3015105

3015108

3015107

3015106

1.2R

1 1.4R

2.2L.1R.3L.1R

1.3R

1 6. R.1L

2.2L.1R

1

1.1R

1.1L

2.2L.1R.

2.2L.1R 1.5R

2.2L.1R.3L

2.2L.1R

2.2L.12R.3L

.2L.1R

1.6R

2.2L.1R.2L

2.2L 1. R

1.5R.1L

2.2L.1R.1R

1.5R.2R

1.5R

1966

1966

1988

1966

1995

1995

1966

1966

1972

1966

1966

69

517

517

68

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 069 Alternative 3 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

579

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt3.mxd 14 July 2012

RR

SR
3015105

3015108

3015100

3015106

1.5R

1.2R

1 1.4R

1.6R

2.2L.1R

1.3R

2.2L.1R

1

1.1L

1.1R

2.2L.1R.

2.2L.1R 1.5R

2.2L.1R.3L

2.2L.1R

2.2L.1R.3L

2.2L.1R.3L.1R

1 6. R.1L

2.2L.1R.2L

2.2L 1. R

1.5R.1L

2.2L.1R.1R

1.5R.2R

1966

1966

1988

1966

1995

1995

1966

1966

1972

1966

1966

69

517

517

68

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 069 Alternative 4 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

579

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt4.mxd 20 March 2012

RR

SR
3015105

3015108

3015100

3015106

1.5R

1.2R

1 1.4R

1.6R

2.2L.1R

1.3R

2.2L.1R

1

1.1L

1.1R

2.2L.1R.

2.2L.1R 1.5R

2.2L.1R.3L

2.2L.1R

2.2L.1R.3L

2.2L.1R.3L.1R

1 6. R.1L

2.2L.1R.2L

2.2L 1. R

1.5R.1L

2.2L.1R.1R

1.5R.2R

1966

1966

1988

1966

1995

1995

1966

1966

1972

1966

1966

69

517

517

68

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 069 Alternative 5 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Sytematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

579

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt5.mxd 14 July 2012

RR

SR
Unit 70

Total Unit

Acres:

16.5 Prescription: 2, 3, 4, 5 - 

Clearcut

4 - 33% Removal

VCU

Number:

578 Harvest

System:

Shovel

Net Harvest

Volume

(MBF):

2, 3, 5 - 267

4 - 133 LUD:

Timber Production

 SILVICULTURE:

Existing Condition: This unit has old-growth stand structure. Overstory trees are mature to over-mature and rough, with heavy 

mistletoe and moderate stem decay. Windthrow risk is moderate. Past even-aged harvest areas are to the south, west and 

across the existing road along the eastern boundary. These past harvest areas have met the green-up requirement with 

regeneration over 5' tall meeting NFMA requirements for no longer being considered openings.

Silvicultural Objective/Desired Condition: The desired condition for this stand is a highly productive, healthy, windfirm stand 

grown for timber management that retains residual trees as needed to meet standards and guides or other objectives. 

Silvicultural Prescription: Even-age Management-Clearcut (Alternatives 2,3, 5, and southern settings in Alternative 4)

This stand is being recommended for harvest at this time because it is not expected to obtain the desired condition given the 

current growth trajectory. This stand is mature to over-mature with moderate stem decay and defect resulting in a situation 

where stand growth is being offset by decay. Even-aged clear cutting is being prescribed to preclude or minimize the risk of 

windthrow post harvest, promote natural regeneration by opening up the canopy, and minimize defect and disease in the 

future stand to the maximum extent possible. 

Silvicultural Prescription: Uneven-age Management Group Selection (Alternative 4 northern setting)

Harvest up to 33% of the planned setting acreage in groups of trees up to two acres in size. Group selections should be well 

distributed across the stand. Locate groups to address insect and disease issues or capitalize on existing advanced 

regeneration of desirable tree species where possible. Locate group selections to maintain wildlife travel ways and important 

habitat while maximizing the economics of this entry and also maintaining the feasibility of future harvest entries in the 

remaining old growth portions of the unit. The uneven-aged group selection regeneration method is being prescribed for the 

unit or portions of the unit as a means to maintain large amounts of diverse structure to benefit wildlife in perpetuity over time.

 TIMBER/LOGGING:

This unit is planned for shovel yarding to the proposed temporary roads and existing NFS roads 3015000 and 3015200.

 ENGINEERING/ROADS:

Unit is accessed by two proposed temporary roads, totaling 400 feet, as displayed on the unit card.

 BOTANY:

Two lesser round-leaved orchid (sensitive plant) populations completely deferred from unit (legacy not required in this unit). 

Rationale for preservation of populations is their small occupied areas, they are contiguous with RMA buffer, they are easily 

avoided, large number of plants (70), and contiguous with additional suitable habitat. 

Unit could indirectly affect both deferred populations.

 FISHERIES:

Unit

Number 70 Alternatives 2, 3, 4, 5

Summary of Concerns, Responses, BMPs and Mitigation

 INVASIVE SPECIES:

No Concerns
Unit 70

Streams are tributaries to Thorne River. 

Stream#: 1 Class: I Flagging: B/W C- Type: MMS, PAS

Concerns: blowdown, steep side-slopes and active erosion

Buffer (RMA): Class I - greater of 120 feet (MMS) or 100 feet (PAS), flood plain, riparian vegetation or soils, or riparian 

associated wetland fens. 

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed

Protection: Category A 

Stream#: 1.4R Class: II Flagging: B/W C- Type: HCO, MMO

Concerns: none

Buffer (RMA): Class II for HCO greater of 100 feet or to the top of the side-slope break. Class II for MMO greater of 120 feet, 

flood plain, riparian vegetation or soils, or riparian associated wetland fens. 

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed

Protection: Category A 

Stream#: 1.4R.1R Class: II, IV Flagging: B/W, G/W C- Type: MMO

Concerns: none

Buffer (RMA): Class II for MMO greater of 120 feet, flood plain, riparian vegetation or soils, or riparian associated wetland 

fens. Class IV for MMO none.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed

Protection: Category A and C 

Stream#: 1.5R Class: I, II Flagging: B/W C- Type: MMS, MMO

Concerns: none

Buffer (RMA): Class I for MMS and class II for MMO greater of 120 feet, flood plain, riparian vegetation or soils, or riparian 

associated wetland fens.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed

Protection: Category A 

Stream#: 1.5R.1R Class: II Flagging: B/W C- Type: HCO

Concerns: none

Buffer (RMA): Class II for HCO greater of 100 feet or to the top of the side-slope break.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed

Protection: Category A 

Stream#: 1.6R Class: I, II Flagging: B/W C- Type: MMO

Concerns: blowdown

Buffer (RMA): Class I and II for MMO greater of 120 feet, flood plain, riparian vegetation or soils, or riparian associated 

wetland fens. 

Alternatives: 2, 3, 4, and 5 Buffer (RAW): Will be identified by IDT during layout.

Protection: Category A 

Stream#: 1.7R Class: I Flagging: B/W C- Type: MMS, MMO

Concerns: none

Buffer (RMA): Class I MMO and MMS greater of 120 feet, flood plain, riparian vegetation or soils, or riparian associated 

wetland fens. 

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed

Protection: Category A 

All other streams in unit: Class: IV Flagging: G/W C- Type: HC and MM

Buffer (RMA): none Buffer (RAW): no review needed

Protection: Category C 

Temporary roads for Unit 70: All Alternatives -- No known stream crossings. The temporary roads have not been field 

verified and will be surveyed before implementation. If any stream crossings are found, crossings structures and locations 

will be approved by USFS, in consultation with fisheries biologist or hydrologist, prior to construction (BMP 14.17). During 

construction of temporary roads implement BMPs 12.17, 13.10, 13.11, 13.16, 14.3, and 14.5.

 GEOLOGY/KARST:

No Concerns

 HERITAGE RESOURCES:
Unit 70

This unit was investigated per the third amended interagency Programmatic Agreement (PA) for historic properties. As 

specified by the PA, any potential adverse effect on historic properties (if any) was mitigated and portions of the Area of 

Potential Effect will be monitored by a qualified heritage specialist during and/or after actual ground disturbance.

 SCENERY:

The Scenic Integrity Objective (SIO) for this unit is Very Low . It is in Timber Production LUD and is considered Not Seen. 

There are no scenery resource concerns.

 RECREATION:

No concerns

 SOILS/WETLANDS:

Slopes in this unit are less than 20%. Forested wetlands cover about 40% of the unit. The soils and wetlands are suitable for 

shovel yarding. Shovel yarding should follow BMPs 12.5, 13.2 and 13.9. Specifically, the shovel operator should avoid the 

small non-forested areas of the unit to prevent rutting. Avoid track slippage and rutting. 

A temporary road will impact approximately 1/2 acre of forested wetland within the unit and less than 1/4 acre outside of the 

unit. Due to the extent of the wetlands in the unit it was not possible to avoid wetland impacts (BMP 12.5, 13.2). Provide 

adequate cross drainage, remove drainage structures, and close road after harvest (BMP 14.9) (33 CFR BMPs 4, 5, 6).

 WILDLIFE:

Unit includes average snow deer winter range (all of unit except eastern tip of southern setting). Unit is near Honker large 

OGR complex. Possible goshawk detected in unit in 2010; grouse also seen. Legacy standard and guideline does not apply 

in this VCU.

Alternative 4: Prescription in northern portion of unit is group selection with 33% unit area removal to minimize impacts to 

wolves and connectivity and maintain other habitat values.
3015200

3015000

3015208

3015200

1

3015107

1.5 R

1.8L

1.6R

1.1L

1.7L

1

1.4

R

7R.1L

1.4R.2R

1.6R

1.5 R

1. 5R.1R

1 7. R 1. L

1.4R.1R

1.8L.1L

1 7. R.1L.1L 1.6 R

1.7R.2L

1.8L.2L

1.4R

1.7

R

1

1.7R.1R

1 6. R.1 L

1.8R

1.7 R

1.8L

1.9L

1987

2000

1988

1991 1974

1972

70

71

79

80

81

70

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 070 Alternative 2 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Partial Cut

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

578

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt2.mxd 14 July 2012

RR

SR
3015200

3015000

3015208

3015200

1

3015107

1.5 R

1.8L

1.6R

1.1L

1.7L

1

1.4

R

7R.1L

1.4R.2R

1.6R

1.5 R

1. 5R.1R

1 7. R 1. L

1.4R.1R

1.8L.1L

1 7. R.1L.1L 1.6 R

1.7R.2L

1.8L.2L

1.4R

1.7

R

1

1.7R.1R

1 6. R.1 L

1.8R

1.7 R

1.8L

1.9L

1987

2000

1988

1991 1974

1972

70

71

79

80

81

70

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 070 Alternative 3 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

578

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt3.mxd 14 July 2012

RR

SR
3015000

3015208

3015200

3015200

1.6 R

1

1.5 R

1.4

R

1.6R

1.7L

1.1

1

L

1.8L

7R.1L

1.4R.2R

1.6R

1.5 R

1. 5R.1R

1 7. R 1. L

1.4R.1R

1.8L.1L

1 7. R.1L.1L

1.9L

1.7R.2L

1.8L.2L

1.4R

1.7

R

1

1.7R.1R

1 6. R.1 L

1.8R

1.7 R

1.8L

1987

2000

1988

1991

1972

1974

70

71

79

80

70

81

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 070 Alternative 4 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

578

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt4.mxd 20 March 2012

RR

SR
3015208

3015200

3015000

3015200

1

1.5 R

1.4

R

1.6R

1.1L

1.7L

1

1.8L

7R.1L

1.4R.2R

1.6R

1.5 R

1. 5R.1R

1 7. R 1. L

1.4R.1R

1.8L.1L

1 7. R.1L.1L

1.9L

1.7R.2L

1.8L.2L

1.4R

1.7

R

1

1.7R.1R

1 6. R.1 L

1.8R

1.7 R

1.8L

1.6 R

2000

1988

1991 1974

1972

1987

70

71

80

81

70

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 070 Alternative 5 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Sytematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

578

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt5.mxd 14 July 2012

RR

SR
Unit 71

Total Unit

Acres:

2, 3, 5 - 

103.0

4 - 52.8

Prescription: 2, 3, 5 - Clearcut

4 - 33% Removal

VCU

Number:

578 Harvest

System:

Shovel

Net Harvest

Volume

(MBF):

2, 3, 5 - 

2,274

4 - 384

LUD:

Timber Production

 SILVICULTURE:

Existing Condition: This area consists of old-growth stand structure that is comprised of over-mature western hemlock, 

western redcedar, and Sitka spruce. Windthrow risk is low throughout the stand due to limited topographic exposure to 

winds and timber with high resistance to overturning. Defects and damages are moderate, with the western hemlock being 

the most defective. Mistletoe was rated low. All adjacent past harvest areas have regeneration at least 5 feet tall, meeting 

NFMA requirements for no longer being considered openings. 

Silvicultural Objective/Desired Condition: The desired condition for this stand is a highly productive, healthy, windfirm stand 

grown for timber management that retains residual trees as needed to meet standards and guides or other objectives. 

Silvicultural Prescription: Even-age Management -Clearcut (Alternatives 2,3, 5)

This stand is being recommended for harvest at this time because it is not expected to obtain the desired condition given the 

current growth trajectory. This stand is mature to over-mature with moderate to heavy stem decay and defect resulting in a 

situation where stand growth is being offset or exceeded by decay. Even-aged clear cutting is being prescribed to preclude or 

minimize the risk of windthrow post harvest, promote natural regeneration by opening up the canopy, and minimize defect 

and disease in the future stand to the maximum extent possible.

Unit 71 exceeds 100 acres in Alternatives 2, 3, and 5 and represents a long, relatively narrow unit with a maximum width of 

about 1,200 feet. Reconstruction of the road through the unit is necessary to access additional units beyond Unit 71. This 

road is planned for storage following harvest. Harvesting this timber now would reduce the cost and minimize the effects on 

closing and reopening the road at a later date, therefore the unit meets the criteria for exceeding 100 acres.

Silvicultural Prescription: Uneven-age Management Group Selection (Alternative 4)

Harvest up to 33% of the planned setting acreage in groups of trees up to two acres in size. Group selections should be well 

distributed across the stand. Locate groups to address insect and disease issues or capitalize on existing advanced 

regeneration of desirable tree species where possible. Locate group selections to maintain wildlife travel ways and important 

habitat while maximizing the economics of this entry and also maintaining the feasibility of future harvest entries in the 

remaining old growth portions of the unit. Avoid sensitive plant populations during this entry, by placing harvest groups in 

other areas (see Botany section). The uneven-aged group selection regeneration method is being prescribed for the unit or 

portions of the unit as a means to maintain large amounts of diverse structure to benefit wildlife (over time).

 TIMBER/LOGGING:

This unit is planned for shovel yarding to the proposed temporary roads and existing NFS road 3015200.

 ENGINEERING/ROADS:

Unit is accessed by three proposed temporary roads in Alternative 2, 3, and 5, totaling 3,000 feet, as displayed on the unit 

card. Approximately 600 feet of these roads will be constructed across decommissioned road bed. Unit is accessed by two 

proposed temporary roads in Alternative 4, totaling 1,500 feet, as displayed on the unit card. Approximately 600 feet of these 

roads will be constructed across decommissioned road bed. Reconstruction of existing NFS road 3015200, totaling 3,700 

feet, is required to access the unit. See associated road card for detailed information. Reconstructed NFS road 3015200 is 

also used to access Units 71-77, and 87.

 BOTANY:

Alternatives 2, 3, and 5

Four populations of lesser round-leaved orchids (sensitive plant) occur at least partially in unit. In two populations, only 1 

individual has been identifed. The temporary road accessing the southwest lobe of the unit passes through the mapped 

habitat for one of these populations. Two larger populations, 8 and 55 individuals, are partially within unit. Because of the 

size of the larger population and the fact that it is mostly within the unit, the riparian buffer along the Class I stream on the 

western boundary was widened to include a linear portion of the population. A large portion of the other population is within 

the riparian buffer of the Class I stream on the southeast part of the unit. 

Unit

Number 71 Alternatives 2, 3, 4, 5

Summary of Concerns, Responses, BMPs and Mitigation
Unit 71

Alternative 4

The two lesser round-leaved orchid populations (1 and 55 individuals) in the western half of unit were completely deferred 

from unit in this alternative. One small population (1 individual) is inside unit and another population (8 individuals) is only 

slightly in unit. Prescription is 33% partial harvest using group selection and direct impacts to plants will be avoided by 

incorporating populations into leave areas for this entry.

 FISHERIES:

Streams are tributaries to Thorne River. 

Stream#: 1 	Class: I Flagging: B/W C- Type: MMS, MCS, PAS

Concerns: blowdown

Buffer (RMA): Class I - greater of 120 feet (MMS) or 100 feet (PAS), flood plain, riparian vegetation or soils, or riparian 

associated wetland fens. Class I for MCS greater of 100 feet or to the top of the side-slope break. 

Alternatives: 2, 3, 4 and 5	 Buffer (RAW): no review needed

Protection: Category A 

Stream#: 2.5L Class: I Flagging: B/W C- Type: LCS

Concerns: none

Buffer (RMA): Class I for LCS greater of 100 feet or to the top of the side-slope break.

Alternatives: 2, 3, 4 and 5 Buffer (RAW): no review needed 

Protection: Category A 

All other streams in unit: Class: IV Flagging: G/W C- Type: HC oe MM

Buffer (RMA): none Buffer (RAW): no review needed

Protection: Category C 

Temporary roads for Unit 71: Alternatives 2, 3, 4 and 5 -- No known stream crossings. The temporary roads have not been 

field verified and will be surveyed before implementation. If any stream crossings are found, crossings structures and 

locations will be approved by USFS, in consultation with fisheries biologist or hydrologist, prior to construction (BMP 14.17). 

During construction of temporary roads implement BMPs 12.17, 13.10, 13.11, 13.16, 14.3, and 14.5.

 GEOLOGY/KARST:

No Concerns

 HERITAGE RESOURCES:

This unit was investigated per the third amended interagency Programmatic Agreement (PA) for historic properties. As 

specified by the PA, any potential adverse effect on historic properties (if any) was mitigated and portions of the Area of 

Potential Effect will be monitored by a qualified heritage specialist during and/or after actual ground disturbance.

 SCENERY:

The Scenic Integrity Objective (SIO) for this unit is Very Low . It is in Timber Production LUD and is considered Seldom 

Seen. There are no scenery resource concerns.

 RECREATION:

No concerns

 SOILS/WETLANDS:

Slopes in this unit are less than 20%. Forested wetlands occupy approximately 10-15% of the unit. The soils and wetlands 

are suitable for shovel yarding. Shovel yarding should follow BMPs 12.5, 13.2 and 13.9. Avoid track slippage and rutting.

Alternatives 2, 3, and 5: 

The western temporary road will impact about 1 acre of forested wetlands (BMP 12.5, 13.2). Due to the extent of wetlands 

and location of existing roads, there is no other access point that would provide road access with less wetland impacts (BMP 

12.5, 13.2).Provide adequate cross drainage, remove structures, and close the road after harvest (BMP 14.9) (33 CFR BMPs 

4,5, 6).

 WILDLIFE:

Unit includes average snow deer range (entire unit), most of which is also deep marten habitat/deer winter range (all but an 

easter lobe of the unit). Unit is near Honker large OGR complex. Legacy standard and guideline does not apply in this VCU.

 INVASIVE SPECIES:

No Concerns
Unit 71

Alternative 4: Western portion of unit (north and south of existing road) dropped to maintain a travel route; southeast portion 

of unit dropped to avoid sensitive plants. Prescription is group selection with 33% basal area removal to minimize impacts to 

wolves and maintain other habitat values.
3015000

3015200

3015208

3015200

1

1

1.8R

1.7 R

1.6 R

1.5 R

1.8L

1

1 7. R.1

1.5R.1

1.6L

1.3R

2.5L

1.7R

1.8L.2L

1 7. R 1. L

1.8L.1L

1.7L

1.4R

1988

1991

1987

1974

70

71

72

79

80

81

70

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 071 Alternative 2 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Partial Cut

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

578

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt2.mxd 14 July 2012

RR

SR
3015000

3015208

3015200

3015200

1

1.8R

1.7 R

1.6 R

1.5 R

1.8L

1

1 7. R.1

1.5R.1

1.6L

1.3R

2.5L

1.7R

1.8L.2L

1 7. R 1. L

1.8L.1L

1.7L

1.4R

1

1988

1991

1987

1974

71

72

79

80

81

70

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 071 Alternative 3 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

578

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt3.mxd 14 July 2012

RR

SR
3015000

3015208

3015200

3015200

1.4R

1

1

1.8R

1.7 R

1.6 R

1.5 R

1.8L

1

1 7. R.1

1.5R.1

1.6L

1.3R

2.5L

1.7R

1.8L.2L

1 7. R 1. L

1.8L.1L

1.7L

1988

1991

1987

1974

70

71

72

73

79

80

81

70

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 071 Alternative 4 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

578

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt4.mxd 20 March 2012

RR

SR
3015200

3015208

3015200

3015000

3015200

1

1.8R

1.7 R

1.6 R

1.5 R

1.8L

1

1 7. R.1

1.5R.1

1.6L

1.3R

2.5L

1.7R

1.8L.2L

1 7. R 1. L

1.8L.1L

1.7L

1.4R

1

1988

1987

1974

1991

70

71

72

73

80

81

70

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 071 Alternative 5 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Sytematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

578

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt5.mxd 14 July 2012

RR

SR
Unit 72

Total Unit

Acres:

12.0 Prescription: 2, 3, 5 - Clearcut

4 - 25% Removal

VCU

Number:

578 Harvest

System:

Shovel, 

Helicopter

Net Harvest

Volume

(MBF):

2, 3, 5 - 361

4 - 90 LUD:

Timber Production

 SILVICULTURE:

Existing Condition: This unit consists of approximately 150 year old even-aged timber from windthrow origin. The stand is in 

the understory re-initiation stage of development. Mistletoe is heavy and affecting stand volume and value. Defect is 

moderate overall with stem form defects the primary concern. Adjacent even-age harvest originated in 1989 and meets 

NFMA requirements for no longer being considered an opening. Windthrow risk is high.

Silvicultural Objective/Desired Condition: The desired condition for this stand is a highly productive, healthy, windfirm stand 

grown for timber management that retains residual trees as needed to meet standards and guides or other objectives. 

Silvicultural Prescription: Even-age Management - Clearcut (Alternatives 2,3, 5)

This stand is being recommended for harvest at this time because it is not expected to obtain the desired condition given the 

current growth trajectory. This stand is mature with moderate defect and heavy mistletoe resulting in a situation where stand 

growth is being offset by decay. Even-aged clear cutting is being prescribed to preclude or minimize the risk of windthrow 

post harvest, promote natural regeneration by opening up the canopy, and minimize defect and disease in the future stand to 

the maximum extent possible.

Silvicultural Prescription: Uneven-age Management Single Tree Selection (Alternative 4)

Maintain at least 75 percent of the setting pretreatment basal area, based on standing live tree total for the unit, uncut. 

Individual trees selected for harvest may occur in small groups but will generally be evenly distributed across the stand. Any 

small groups will usually be less than one acre but may occasionally go up to two acres in size where needed to address 

insect and disease issues or capitalize on existing advanced regeneration of desirable tree species. Trees selected for 

harvest will generally be well distributed and no large openings will occur as a result of the harvest. Review the marking 

guides and silvicultural prescription for more detailed information and direction for how to implement this prescription. The 

uneven-aged single tree selection regeneration method is being prescribed for this unit in Alternative 4 specifically to 

maintain intact diverse structure for wildlife needed at this time and place in the landscape to meet the objectives of this 

alternative. This system is not optimum for promoting timber production but is being prescribed in alternative 4 primarily to 

mitigate the overall effects of the project on wildlife.

 TIMBER/LOGGING:

Alternatives 2, 3, 5: This unit is planned for shovel yarding to the proposed temporary road. 

Alternative 4: This unit is planned for helicopter yarding to landings on the proposed NFS road 3015240.

 ENGINEERING/ROADS:

Unit is accessed by a proposed temporary road in Alternatives 2, 3, and 5, totaling 2,000 feet, as displayed on the unit card. 

This assumes that the temporary road in unit 71 is built as well. Reconstruction of existing NFS road 3015200, totaling 3,700 

feet, is required to access the unit. See associated road card for detailed information. Reconstructed NFS road 3015200 is 

also used to access Units 71-77, and 87.

 BOTANY:

Alternatives 2, 3, 4, 5

One lesser round-leaved orchid (sensitive plant) population slightly (2% of a population of 55 plants) in unit. Temporary road 

also passes through a portion of the population and has been routed to minimize overlap.

This unit indirectly affects a portion of this population, located north of the unit.

 FISHERIES:

Unit

Number 72 Alternatives 2, 3, 4, 5

Summary of Concerns, Responses, BMPs and Mitigation

 INVASIVE SPECIES:

No Concerns
Unit 72

Streams are tributaries to Thorne River. 

Stream#: 2.5L Class: I Flagging: B/W C- Type: PAS, LCS

Concerns: none

Buffer (RMA): Class I for PAS greater of 100 feet, flood plain, riparian vegetation or soils, or riparian associated wetland 

fens. Class I for LCS greater of 100 feet or to the top of the side-slope break.

Alternatives: 2, 3, and 5 Buffer (RAW): Will be identified by IDT during layout.

Alternative: 4 Buffer (RAW): no review needed

Protection: Category A

Stream#: 2.6L Class: I Flagging: B/W C- Type: PAO

Concerns: none

Buffer (RMA): Class I for PAO greater of 100 feet, flood plain, riparian vegetation or soils, or riparian associated wetland fens. 

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed

Protection: Category A 

Stream#: 2.6L.1L Class: I, IV Flagging: B/W, G/W C- Type: PAO, MMO

Concerns: none

Buffer (RMA): Class I - greater of 100 feet (PAO) or 120 feet (MMO), flood plain, riparian vegetation or soils, or riparian 

associated wetland fens. Class IV for MMO none.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed

Protection: Category A and C 

Temporary roads for Unit 72: Alternatives 2, 3, and 5 -- No known stream crossings. The temporary road has not been field 

verified and will be surveyed before implementation. If any stream crossings are found, crossings structures and locations 

will be approved by USFS, in consultation with fisheries biologist or hydrologist, prior to construction (BMP 14.17). During 

construction of temporary roads implement BMPs 12.17, 13.10, 13.11, 13.16, 14.3, and 14.5.

 GEOLOGY/KARST:

No Concerns

 HERITAGE RESOURCES:

This unit was investigated per the third amended interagency Programmatic Agreement (PA) for historic properties. As 

specified by the PA, any potential adverse effect on historic properties (if any) was mitigated and portions of the Area of 

Potential Effect will be monitored by a qualified heritage specialist during and/or after actual ground disturbance.

 SCENERY:

The Scenic Integrity Objective (SIO) for this unit is Very Low . It is in Timber Production LUD and is considered Not Seen. 

There are no scenery resource concerns.

 RECREATION:

No concerns

 SOILS/WETLANDS:

Slopes are less than 25%. There are approximately 2 acres (23% of the unit) of forested wetland along the northern edge of 

the unit. The soils and wetlands are suitable for minimum partial suspension yarding or shovel yarding. All logging systems 

should follow BMPs 12.5, 13.2 and 13.9. Use care when approving shovel yarding on slopes. Avoid track slippage and rutting.

Alternatives 2, 3, and 5:

The temporary road will impact less than 1/4 acre of forested wetlands (BMP 12.5, 13.2). Due to the extent of wetlands and 

location of existing roads, there is no other access point that would provide road access with less wetland impacts (BMP 

12.5, 13.2).Provide adequate cross drainage, remove structures, and close the road after harvest (BMP 14.9) (33 CFR BMPs 

4,5, 6).

 WILDLIFE:

Unit includes average snow deer winter range (southern and northern ends of unit), some of which is also deep snow marten 

habitat/deer winter range (southern end of unit). Unit is near Honker large OGR complex. Legacy standard and guideline 

does not apply in this VCU.

Alternative 4: Prescription is 25% basal area removal to minimize impacts to wolves and connectivity and maintain other 

habitat values.
3015051

3015208

3015200

3015241

3015052

1.7

2 . 2 R

1.5L

2

1

2 . 2 R

1.6L

2 2. R

2.2R.1 L

2.5 L

2.6L.1 L

2.2

R

2.6L

2.5L

2.4 L

2

1988

1991

1987

1990

1988

66

67

71

72

74

75

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 072 Alternative 2 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Partial Cut

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

578

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt2.mxd 14 July 2012

RR

SR
3015051

3015208

3015200

3015241

3015052

1.7

2 . 2 R

1.5L

2

1

2 . 2 R

1.6L

2 2. R

2.2R.1 L

2.5 L

2.6L.1 L

2.2

R

2.6L

2.5L

2.4 L

2

1988

1991

1987

1990

1988

66

67

71

72

74

75

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 072 Alternative 3 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

578

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt3.mxd 14 July 2012

RR

SR
3015051

3015208

3015200

1.7

2 . 2 R

1.5L

2

1

2 . 2 R

1.6L

2 2. R

2.2R.1 L

2.5 L

2.6L.1 L

2.2

R

2.6L

2.5L

2.4 L

2

1988

1991

1987

1990

1988

66

67

71

72

73

75

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 072 Alternative 4 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

578

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt4.mxd 20 March 2012

RR

SR
3015051

3015208

3015052

3015200

1.7

2 . 2 R

1.5L

2

1

2 . 2 R

1.6L

2 2. R

2.2R.1 L

2.5L

2.6L.1 L

2.2

R

2.6L

2.5L

2.4 L

2

1988

1991

1987

1990

1988

66

71

72

73

74

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 072 Alternative 5 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Sytematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

578

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt5.mxd 14 July 2012

RR

SR
Unit 73

Total Unit

Acres:

4 - 44.5

5 - 36.0

Prescription: 4 - 33% Removal

5 - Clearcut

VCU

Number:

578

0

Harvest

System:

Helicopter

Net Harvest

Volume

(MBF):

4 - 373

5 - 915 LUD:

Timber Production

 SILVICULTURE:

Existing Condition: This unit is mainly old-growth with some areas of even-aged structure in the understory re-initiation 

stage. Mistletoe is heavy in even-aged areas. In old growth areas the overstory is typically moderate to high defect with stem 

rot and mistletoe also being of concern. Mistletoe rating was moderate to high overall. All previous harvest areas adjacent to 

or near this unit have met green-up with regeneration over 5 foot tall and meets NFMA requirements for no longer being 

considered an opening.

Silvicultural Objective/Desired Condition: The desired condition for this stand is a highly productive, healthy, windfirm stand 

grown for timber management that retains residual trees as needed to meet standards and guides or other objectives . 

Silvicultural Prescription: Even-age Management (Alternative 5)

This stand is being recommended for harvest at this time because it is not expected to obtain the desired condition given the 

current growth trajectory. This stand is mature to over-mature with moderate to heavy stem decay and defect resulting in a 

situation where stand growth is being offset or exceeded by decay. Even-aged clear cutting is being prescribed to preclude or 

minimize the risk of windthrow post harvest, promote natural regeneration by opening up the canopy, and minimize defect 

and disease in the future stand to the maximum extent possible.

Silvicultural Prescription: Uneven-age Management Group Selection (Alternative 4)

Harvest up to 33% of the planned setting acreage in groups of trees up to two acres in size. Group selections should be well 

distributed across the stand. Locate groups to address insect and disease issues or capitalize on existing advanced 

regeneration of desirable tree species where possible. Locate group selections to maintain wildlife travel ways and important 

habitat while maximizing the economics of this entry and also maintaining the feasibility of future harvest entries in the 

remaining old growth portions of the unit. The uneven-aged group selection regeneration method is being prescribed for the 

unit or portions of the unit as a means to maintain large amounts of diverse structure to benefit wildlife over the long term.

 TIMBER/LOGGING:

Alternative 5: This unit is planned for helicopter yarding to landings on the proposed temporary road accessing Unit 71, and 

the existing NFS road 3015200.

Alternative 4: This unit is planned for helicopter yarding landings on the existing NFS road 3015200.

 ENGINEERING/ROADS:

Helicopter yarding is planned to reconstructed NFS road 3015200, totaling 7,000 feet. See associated road card for detailed 

information. The existing NFS road 3015200 is also used to access other units Unit 71-75 and 77 in Alternative 4 and/or 

Alternative 5.

 BOTANY:

Unit may indirectly affect lesser round-leaved orchid (sensitive plant) population to north of unit.

 FISHERIES:

Unit

Number 73 Alternatives 4, 5

Summary of Concerns, Responses, BMPs and Mitigation

 INVASIVE SPECIES:

No Concerns
Unit 73

Streams are tributaries to Thorne River. 

Stream#: 2.5L 	 Class: I Flagging: B/W C- Type: PAS, LCS

Concerns: none

Buffer (RMA): Class I for PAS greater of 100 feet, flood plain, riparian vegetation or soils, or riparian associated wetland 

fens. Class I for LCS greater of 100 feet or to the top of the side-slope break.

Alternatives: 4 and 5 Buffer (RAW): Will be identified by IDT during layout.

Protection: Category A 

Stream#: 2.4L Class: I, II, IV Flagging: B/W, G/W C- Type: PAO, MMO

Concerns: none

Buffer (RMA): Class I and II - greater of 100 feet (PAO) or 120 feet (MMO), flood plain, riparian vegetation or soils, or riparian 

associated wetland fens. Class IV for MMO none.

Alternatives: 4 and 5 Buffer (RAW): no review needed

Protection: Category A and C

 GEOLOGY/KARST:

No Concerns

 HERITAGE RESOURCES:

This unit was investigated per the third amended interagency Programmatic Agreement (PA) for historic properties. As 

specified by the PA, any potential adverse effect on historic properties (if any) was mitigated and portions of the Area of 

Potential Effect will be monitored by a qualified heritage specialist during and/or after actual ground disturbance.

 SCENERY:

The Scenic Integrity Objective (SIO) for this unit is Very Low . It is in Timber Production LUD and is considered Not Seen. 

There are no scenery resource concerns.

 RECREATION:

No concerns

 SOILS/WETLANDS:

Slopes are less than 20%. A minimum of partial suspension would meet soil and wetland resource concerns (BMPs 12.5, 

13.5, and 13.9).

Alternative 4: There are approximately 14 acres (31% of the unit) of forested wetland located along the northeastern 

boundary and central portion of the unit. 

Alternative 5: There are 13 acres (35% of the unit) of forested wetland located along the northeastern boundary and central 

portion of the unit.

 WILDLIFE:

Unit includes average snow deer winter range (entire unit), most of which is also deep snow marten habitat/deer winter range 

(western 1/2 of unit). Unit is near Honker large OGR complex. Legacy standard and guideline does not apply in this VCU.

Alternative 4: Prescription is small patch cuts with 33% basal area removal to mimimize impacts to wolves and connectivity 

and maintain other habitat values.
3015200

2

3.2R

3.1R

2

3

2.6L.1 L

2.6L

2.5L

2.2 R

3

2. 4 L

1988

1988

1991

1987

1990

71

72

73

75

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 073 Alternative 4 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

578

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt4.mxd 20 March 2012

RR

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3015200

3015200

2

3.2R

3.1R

2

3

2.6L.1 L

2.6L

2.5L

2.2 R

3

2. 4 L

1988

1988

1991

1987

1990

71

72

73

74

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 073 Alternative 5 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Sytematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

578

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt5.mxd 14 July 2012

RR

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Unit 74

Total Unit

Acres:

47.6 Prescription: Clearcut

VCU

Number:

578 Harvest

System:

Shovel, 

Helicopter

Net Harvest

Volume

(MBF):

784

LUD:

Timber Production

 SILVICULTURE:

Existing Condition: This unit has old-growth stand structure. The overstory is typically moderate to high defect with stem 

decay and mistletoe being of concern. Mistletoe rating was moderate to high overall. Windthrow risk is moderate. Past 

harvest areas near or adjacent to this unit have met green-up requirements with regeneration over 5' tall meeting NFMA 

requirements for no longer being considered an opening.

Silvicultural Objective/Desired Condition: The desired condition for this stand is a highly productive, healthy, windfirm stand 

grown for timber management that retains residual trees as needed to meet standards and guides or other objectives. 

Silvicultural Prescription: Even-age Management-Clearcut

This stand is being recommended for harvest at this time because it is not expected to obtain the desired condition given the 

current growth trajectory. This stand is mature to over-mature with moderate to high stem decay and defect resulting in a 

situation where stand growth is being offset or exceeded by decay. Even-aged clear cutting is being prescribed to preclude or 

minimize the risk of windthrow post harvest, promote natural regeneration by opening up the canopy, and minimize defect 

and disease in the future stand to the maximum extent possible.

Unit 74 shares 70 ft of its northeastern border with Unit 75. If both units are considered as one opening and combined, total 

size exceeds 100 acres in Alternatives 2 and 3. The opening represents a long, relatively narrow unit with widths ranging 

from about 100 ft to 1,100 ft. Proposed NFS roads 3015240 and3015241 accessing units 74 and 75, along with the long 

stretch of road 3015200 needed to connect with road 3015240, would be stored after harvest activities; as a result, if Unit 75 

was harvested by itself, the costs of reconstructing roads 3015200 and 3015240 and then building road 3015241 may be 

prohibitive. Therefore, harvesting the timber in Unit 74 now would significantly reduce the cost and minimize the effects on 

closing and reopening roads at a later date. Therefore the unit meets the criteria for exceeding 100 acres.

 TIMBER/LOGGING:

Alternatives 2, 3: This unit is planned for shovel yarding to the proposed NFS road 3015241 and the proposed temporary 

road. 

Alternative 5: This unit is planned for helicopter yarding to a landing on the existing NFS road 3015200.

 Unit is adjacent to Honker large OGR complex and Scenic River LUD.

 ENGINEERING/ROADS:

In Alternatives 2 and 3 the unit is accessed by proposed NFS road 3015241, totaling 1500 feet, proposed NFS road 

3015240, totaling 3000 feet, and a proposed temporary road, totaling 700 feet. See road card for detailed information on the 

proposed NFS road. Proposed NFS road 3015241 is also used to access Unit 75. Reconstruction of existing NFS road 

3015200 in Alternatives 2, 3, and 5, totaling 10,100 feet, is also required to access the unit. See road card for detailed 

information on reconstructed NFS road. Existing NFS road 3015200 is also used to access Units 71-77, and 87.

 BOTANY:

Less than half of one lesser round-leaved orchid (sensitive plant) population (3 individuals) in the southern portion of unit 

would be harvested and presence of other populations nearby. Road needed to access unit in Alternatives 2 and 3 crosses 

through an additional population (1 plant) north of the unit.

This unit indirectly affects a portion of the remainder of population near southern portion of unit.

 FISHERIES:

Unit

Number 74 Alternatives 2, 3, 5

Summary of Concerns, Responses, BMPs and Mitigation

 INVASIVE SPECIES:

No Concerns
Unit 74

Streams are tributaries to Thorne River. (Stream 2 characteristics do not include project-specific, field-verified, information)

Stream#: 2 Class: I Flagging: B/W C- Type: PAS

Concerns: none

Buffer (RMA): Class I for PAS greater of 100 feet, flood plain, riparian vegetation or soils, or riparian associated wetland fens.

Alternatives: 2, 3, and 5 Buffer (RAW): no review needed

Protection: Category A 

Stream#: 2.4L Class: II, IV Flagging: B/W, G/W C- Type: MMO

Concerns: none

Buffer (RMA): Class II for MMO greater of 120 feet, flood plain, riparian vegetation or soils, or riparian associated wetland 

fens. Class IV for MMO none.

Alternatives: 2, 3, and 5 Buffer (RAW): no review needed

Protection: Category A and C 

Stream#: 3 Class: I Flagging: B/W C- Type: PAS, PAO, MMO, PAB

Concerns: none

Buffer (RMA): Class I - greater of 100 feet (PAS, PAO, PAB) or 120 feet (MMO), flood plain, riparian vegetation or soils, or 

riparian associated wetland fens. Class I for MMO greater of 120 feet, flood plain, riparian vegetation or soils, or riparian 

associated wetland fens. 

Alternatives: 2, 3, and 5		 Buffer (RAW): Will be identified by IDT during layout.

Protection: Category A 

Stream#: 3.1R Class: I Flagging: B/W C- Type: MMO

Concerns: none

Buffer (RMA): Class I for MMO greater of 120 feet, flood plain, riparian vegetation or soils, or riparian associated wetland 

fens. 

Alternatives: 2, 3, and 5 Buffer (RAW): Will be identified by IDT during layout.

Protection: Category A 

Temporary roads for Unit 72: Alternatives 2 and 3 -- No known stream crossings. The temporary roads have not been field 

verified and will be surveyed before implementation. If any stream crossings are found, crossings structures and locations 

will be approved by USFS, in consultation with fisheries biologist or hydrologist, prior to construction (BMP 14.17). During 

construction of temporary roads implement BMPs 12.17, 13.10, 13.11, 13.16, 14.3, and 14.5.

 GEOLOGY/KARST:

No Concerns

 HERITAGE RESOURCES:

This unit was investigated per the third amended interagency Programmatic Agreement (PA) for historic properties. As 

specified by the PA, any potential adverse effect on historic properties (if any) was mitigated and portions of the Area of 

Potential Effect will be monitored by a qualified heritage specialist during and/or after actual ground disturbance.

 SCENERY:

The Scenic Integrity Objective (SIO) for this unit is Very Low . It is in Timber Production LUD and is considered Seldom 

Seen. There are no scenery resource concerns. Unit is adjacent to Honker large OGR complex.

 RECREATION:

No concerns

 SOILS/WETLANDS:

Slopes in this unit are generally less than 30%, though slopes over 30% are present. Less than 0.25 acres of emergent 

wetland (0.2% of the unit) are in the unit and should be avoided (BMP 12.5).The soils and wetlands are suitable for shovel 

yarding. Shovel yarding should follow BMPs 12.5, 13.2 and 13.9. Slopes over 25% gradient may not be suitable for shovel 

yarding under some soil moisture conditions. Use care when approving shovel yarding on slopes over 25% gradient. Avoid 

track slippage and rutting.

Alternative 5:

A minimum of partial suspension would meet soil and wetland resource concerns (BMPs 12.5, 13.5, and 13.9).

 WILDLIFE:
Unit 74

Unit includes average snow deer winter range (entire unti), all of which is also deep snow marten habitat/deer winter range. 

Unit is adjacent to Honker large OGR complex. Legacy standard and guideline does not apply in this VCU. 

Alternative 4: Unit dropped to minimize impacts to wolves and connectivity, maintain other habitat values, and minimize road 

building (and effects associated with increased access).
SR

3015241

3015240

3015200 3.2R

3. 3R.1L

3.1R

3.3 R.2L

2

3

2.2R

3.2R

2. 5L

3

2.4 L

2.5L

1988

1988

71

72

74

75

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 074 Alternative 2 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Partial Cut

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

578

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt2.mxd 14 July 2012

RR

SR
SR

3015241

3015240

3015200 3.2R

3. 3R.1L

3.1R

3.3 R.2L

2

3

2.2R

3.2R

2. 5L

3

2.4 L

2.5L

1988

1988

71

72

74

75

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 074 Alternative 3 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

578

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt3.mxd 14 July 2012

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SR
SR

3015200 3.2R

3. 3R.1L

3.1R

3.3 R.2L

2

3

2.2R

3.2R

2. 5L

3

2.4 L

2.5L

1988

1988

71

72

73

74

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 074 Alternative 5 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Sytematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

578

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt5.mxd 14 July 2012

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Unit 75

Total Unit

Acres:

2, 3, - 71.9

4 - 63.3

Prescription: 2, 3 - Clearcut

4 - 33% Removal

VCU

Number:

578 Harvest

System:

Shovel, 

Helicopter

Net Harvest

Volume

(MBF):

2, 3 - 1,540

4 - 508 LUD:

Timber Production

 SILVICULTURE:

Existing Condition: This unit has old-growth stand structure with moderate to high defect. Stem decay and mistletoe are of 

primary concern. Mistletoe rating was moderate to high overall. Windthrow risk is moderate.

All nearby previous harvest areas have met green-up with regeneration over 5 foot tall and meets NFMA requirements for no 

longer being considered openings.

Silvicultural Objective/Desired Condition: The desired condition for this stand is a highly productive, healthy, windfirm stand 

grown for timber management that retains residual trees as needed to meet standards and guides or other objectives. 

Silvicultural Prescription: Even-age Management-Clearcut (Alternatives 2,3)

This stand is being recommended for harvest at this time because it is not expected to obtain the desired condition given the 

current growth trajectory. This stand is mature to over-mature with moderate to heavy stem decay and defect resulting in a 

situation where stand growth is being offset or exceeded by decay. Even-aged clear cutting is being prescribed to preclude or 

minimize the risk of windthrow after harvest, promote natural regeneration by opening up the canopy, and minimize defect 

and disease in the future stand to the maximum extent possible.

Unit 75 shares 70 ft of its southern border with Unit 75. If both units are considered as one opening and combined, total size 

exceeds 100 acres in Alternatives 2 and 3. The opening represents a long, relatively narrow unit with widths ranging from 

about 100 ft to 1,100 ft. Proposed NFS roads 3015240 and3015241 accessing units 74 and 75, along with the long stretch of 

road 3015200 needed to connect with road 3015240, would be stored after harvest activities; as a result, if Unit 75 was 

harvested by itself, the costs of reconstructing roads 3015200 and 3015240 and then building road 3015241 to harvest Unit 

74 later may be prohibitive. Therefore, harvesting the timber in boyh Units 74 and 75 now would significantly reduce the cost 

and minimize the effects on closing and reopening roads at a later date. Therefore the unit meets the criteria for exceeding 

100 acres.

Silvicultural Prescription: Uneven-age Management Group Selection (Alternative 4)

Harvest up to 33% of the planned setting acreage in groups of trees up to two acres in size. Group selections should be well 

distributed across the stand. Locate groups to address insect and disease issues or capitalize on existing advanced 

regeneration of desirable tree species where possible. Locate group selections to maintain wildlife travel ways and important 

habitat while maximizing the economics of this entry and also maintaining the feasibility of future harvest entries in the 

remaining old growth portions of the unit. Avoid placing group selections on sensitive plant populations during this entry (see 

Botany comments). The uneven-aged group selection regeneration method is being prescribed for the unit or portions of the 

unit as a means to maintain large amounts of diverse structure to benefit wildlife over the long term.

 TIMBER/LOGGING:

Alternatives 2, 3: This unit is planned for shovel yarding to the proposed NFS roads 3015240 and 3015245, and existing NFS 

road 3015200.

Alternative 4: A combination of shovel yarding and helicopter yarding is planned in Alternative 4. Shovel settings are planned 

for yarding to the existing NFS road 3015200. Helicopter settings are planned for yarding to landings on the existing NFS 

road 3015200.

 ENGINEERING/ROADS:

Unit is accessed by a proposed NFS roads 3015240 and 3015241 in Alternatives 2 and 3, totaling 4300 feet. See road card 

for detailed information. Reconstruction of existing NFS road 3015200, totaling 10,100 feet, is also required to access the 

unit. See road card for detailed information on reconstructed NFS road. Existing NFS road 3015200 is also used to access 

Units 71-77, and 87.

 BOTANY:

Alternatives 2 and 3

Two lesser round-leaved orchid (sensitive plant) populations (3 and 53 individuals) were deferred and two populations (1 and 

3 individuals) are fully to mostly in unit. 

Unit

Number 75 Alternatives 2, 3, 4

Summary of Concerns, Responses, BMPs and Mitigation
Unit 75

Unit indirectly affects deferred populations to north.

Alternative 4

Two populations (3 and 53 individuals) were deferred and two populations (1 and 3 individuals) are fully or mostly in unit; 

however, prescription is group selection with 33% removal, and direct impacts to plants will be avoided during this entry.

Unit indirectly affects above populations deferred from unit.

 FISHERIES:

Streams are tributaries to Thorne River. Stream 2.5L.1L characteristics do not include project-specific, field-verified, 

information.

Stream#: 2.5L Class: I Flagging: B/W C- Type: LCS

Concerns: none

Buffer (RMA): Class I for LCS greater of 100 feet or to the top of the side-slope break.

Alternatives: 2, 3, and 4 Buffer (RAW): Will be identified by IDT during layout.

Protection: Category A 

Stream#: 2.5L.1R Class: I Flagging: B/W C- Type: PAB

Concerns: none

Buffer (RMA): Class I for PAB greater of 100 feet, flood plain, riparian vegetation or soils, or riparian associated wetland fens.

Alternatives: 2, 3, and 4 Buffer (RAW): no review needed

Protection: Category A 

Stream#: 2.5L.1L Class: I Flagging: B/W C- Type: FPS

Concerns: none

Buffer (RMA): Class I for FPS greater of 130 feet, flood plain, riparian vegetation or soils, or riparian associated wetland fens.

Alternatives: 2, 3, and 4 Buffer (RAW): no review needed

Protection: Category A 

Stream#: 3 Class: I Flagging: B/W C- Type: PAB 

Concerns: none

Buffer (RMA): Class I for PAB greater of 100 feet, flood plain, riparian vegetation or soils, or riparian associated wetland 

fens. 

Alternatives: 2, 3, and 4 Buffer (RAW): Will be identified by IDT during layout.

Protection: Category A 

Stream#: 3.2R Class: I, IV Flagging: B/W, G/W C- Type: PAO, MMO

Concerns: none

Buffer (RMA): Class I for PAO greater of 100 feet, flood plain, riparian vegetation or soils, or riparian associated wetland 

fens. Class IV for MMO and PAO none.

Alternatives: 2, 3, and 4 Buffer (RAW): no review needed.

Protection: Category A and C 

Stream#: 3.3R.2L Class: I, IV Flagging: B/W, G/W C- Type: MMO

Concerns: none

Buffer (RMA): Class I for MMO greater of 120 feet, flood plain, riparian vegetation or soils, or riparian associated wetland 

fens. Class IV for MMO none.

Alternatives: 2, 3, and 4 Buffer (RAW): no review needed

Protection: Category A and C 

Stream#: 3.4R Class: I, IV Flagging: B/W, G/W C- Type: PAB

Concerns: none

Buffer (RMA): Class I for PAB greater of 100 feet, flood plain, riparian vegetation or soils, or riparian associated wetland 

fens. Class IV for PAB none.

Alternatives: 2, 3, and 4 Buffer (RAW): Will be identified by IDT during layout.

Protection: Category A and C 

All other streams in unit: Class: IV Flagging: G/W C- Type: HC or MM

 INVASIVE SPECIES:

No Concerns
Unit 75

Buffer (RMA): none Buffer (RAW): no review needed.

Protection: Category C

 GEOLOGY/KARST:

No Concerns

 HERITAGE RESOURCES:

This unit was investigated per the third amended interagency Programmatic Agreement (PA) for historic properties. As 

specified by the PA, any potential adverse effect on historic properties (if any) was mitigated and portions of the Area of 

Potential Effect will be monitored by a qualified heritage specialist during and/or after actual ground disturbance.

 SCENERY:

The Scenic Integrity Objective (SIO) for this unit is Very Low . It is in Timber Production LUD and is considered Seldom 

Seen. There are no scenery resource concerns.

 RECREATION:

No concerns

 SOILS/WETLANDS:

Alternatives 2, 3, and 4:

Slopes generally range from nearly level to 25%, though slopes to about 50% may be present. The soils and wetlands are 

suitable for shovel yarding. Shovel yarding should follow BMPs 12.5, 13.2 and 13.9. Slopes over 25% gradient may not be 

suitable for shovel yarding under some soil moisture conditions. Use care when approving shovel yarding on slopes over 

25% gradient. Avoid track slippage and rutting.

Alternatives 2, 3: There are approximately 17 acres (24% of the unit) of forested wetlands along the eastern boundary of the 

unit (BMP 12.5). 

Alternative 4: There are approximately 14 acres (23% of the unit) of forested wetlands along the eastern boundary of the unit 

(BMP 12.5). A minimum of partial suspension would meet soil and wetland resource concerns (BMPs 12.5, 13.5, and 13.9).

 WILDLIFE:

Unit includes average snow deer winter range (entire unti), all of which is also deep snow marten habitat/deer winter range. 

Unit is near Honker large OGR complex. Legacy standard and guideline does not apply in this VCU. Boundary was adjusted 

to avoid two sensitive plants. 

Alternative 4: Prescription is group selection with 33% removal by acreage to minimize impacts to wolves and connectivity 

and maintain other habitat values.
SR

3015230

3015200

3015241

3015245

3015230

3015240

3015200

5L.1R.3L 2.5L.1

3.2R

3.3R.1L

3.3 R.2L

2. 5 L.1R.1L

2.5L.1R.2L

3

2.5L.1L

3.2R

3. 4R

2.5L.1R

2.5L.1R

2.5L

1989

1989

1990

1988

1988

1988

74

75

75

77 78

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 075 Alternative 2 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Partial Cut

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

578

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt2.mxd 14 July 2012

RR

SR
SR

3015230

3015200

3015241

3015245

3015230

3015240

3015200

5L.1R.3L 2.5L.1

3.2R

3.3R.1L

3.3 R.2L

2. 5 L.1R.1L

2.5L.1R.2L

3

2.5L.1L

3.2R

3. 4R

2.5L.1R

2.5L.1R

2.5L

1989

1989

1990

1988

1988

1988

74

75

77 78

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 075 Alternative 3 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

578

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt3.mxd 14 July 2012

RR

SR
SR

3015230

3015200

3015230

3015200

5L.1R.3L 2.5L.1

3.2R

3.3R.1L

3.3 R.2L

2. 5 L.1R.1L

2.5L.1R.2L

3

2.5L.1L

3.2R

3. 4R

2.5L.1R

2.5L.1R

2.5L

1989

1989

1990

1988

1988

1988

73

75

75

77

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 075 Alternative 4 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

578

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt4.mxd 20 March 2012

RR

SR
Unit 77

Total Unit

Acres:

2, 3, 5 - 98.5

4 - 86.1

Prescription: 2, 3, 5 - Clearcut

4 - 33% Removal

VCU

Number:

578 Harvest

System:

Shovel, 

Helicopter

Net Harvest

Volume

(MBF):

2, 3, 5 - 

2,542

4 - 733

LUD:

Timber Production

 SILVICULTURE:

Existing Condition: This unit has old-growth and uneven-age structure. Moderate to high heart rot and stem decay are 

present. Mistletoe is moderate with patches of heavy infection. Windthrow risk is moderate. Previous even-aged harvest 

areas are adjacent to this unit. All have advanced regeneration over 5 feet tall meeting NFMA requirements for no longer 

being considered an opening.

Silvicultural Objective/Desired Condition: The desired condition for this stand is a highly productive, healthy, windfirm stand 

grown for timber management that retains residual trees as needed to meet standards and guides or other objectives. 

Silvicultural Prescription: Even-age Management- Clearcut (Alternatives 2,3,5)

This stand is being recommended for harvest at this time because it is not expected to obtain the desired condition given the 

current growth trajectory. This stand is over-mature with moderate to heavy stem decay and defect resulting in a situation 

where stand growth is being offset or exceeded by decay. Even-aged clear cutting is being prescribed to preclude or 

minimize the risk of windthrow after harvest, promote natural regeneration by opening up the canopy, and minimize defect 

and disease in the future stand to the maximum extent possible.

Silvicultural Prescription: Uneven-age Management Group Selection (Alternative 4)

Harvest up to 33% of the planned setting acreage in groups of trees up to two acres in size. Group selections should be well 

distributed across the stand. Locate groups to address insect and disease issues or capitalize on existing advanced 

regeneration of desirable tree species where possible. Locate group selections to maintain wildlife travel ways and important 

habitat while maximizing the economics of this entry and also maintaining the feasibility of future harvest entries in the 

remaining old growth portions of the unit. Avoid placing group selections on sensitive plant population during this entry (see 

Botany comments). The uneven-aged group selection regeneration method is being prescribed for the unit or portions of the 

unit as a means to maintain large amounts of diverse structure to benefit wildlife over the long term.

 TIMBER/LOGGING:

Alternatives 2, 3, 4: This unit is planned for shovel yarding to the proposed temporary road and the existing NFS road 

3015230. 

Alternative 5: This unit planned for helicopter yarding to a landing on existing NFS road 3015250.

 ENGINEERING/ROADS:

Unit is accessed by a proposed temporary road in Alternatives 2, 3, and 4, totaling 2600 feet, as displayed on the unit card. 

Approximately 500 feet of this road will be constructed across decommissioned road bed. Reconstruction of existing NFS 

road 3015200 and 3015230 will be required to access the unit in Alternatives 2, 3, and 4, totaling 11,100 feet. See road card 

for detailed information.These roads are also used to access Units 71-75, and 87.

 BOTANY:

Alternatives 2, 3, and 5

Two small populations (1 and 2 individuals) of lesser round-leaved orchid (sensitve plant) in unit. 

Unit may indirectly affects one Alaska rein orchid (sensitive plant) population located east of unit.

Alternative 4

One lesser round-leaved orchid population deferred out of unit and one population in unit. Prescription is group selection 

with 33% removal by area and direct impacts to population in unit will be avoided during this entry.

Unit may indirectly affect one Alaska rein orchid (sensitive plant) population located east of unit.

Unit

Number 77 Alternatives 2, 3, 4, 5

Summary of Concerns, Responses, BMPs and Mitigation

 INVASIVE SPECIES:

No Concerns
Unit 77

 FISHERIES:

Streams are tributaries to Thorne River. 

Stream#: 2.5L Class: I Flagging: B/W C- Type: LCS

Concerns: none

Buffer (RMA): Class I for LCS greater of 100 feet or to the top of the side-slope break.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): Will be identified by IDT during layout.

Protection: Category A 

Stream#: 2.5L.1R Class: I, II, IV Flagging: B/W, G/W C- Type: PAB, MMO

Concerns: none

Buffer (RMA): Class I and II - greater of 100 feet (PAB) or 120 feet (MMO), flood plain, riparian vegetation or soils, or riparian 

associated wetland fens. Class II for MMO greater of 120 feet, flood plain, riparian vegetation or soils, or riparian associated 

wetland fens. Class IV MMO none.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed

Protection: Category A and C 

All other streams in unit: Class: IV Flagging: G/W C- Type: HC or MM

Buffer (RMA): none Buffer (RAW): no review needed

Protection: Category C 

Temporary roads for Unit 77: Alternatives 2, 3, and 4 -- No known stream crossings. The temporary road has not been field 

verified and will be surveyed before implementation. A portion of the temporary road would be reopened decommissioned 

road. If any stream crossings are found, crossings structures and locations will be approved by USFS, in consultation with 

fisheries biologist or hydrologist, prior to construction (BMP 14.17). During construction of temporary roads implement BMPs 

12.17, 13.10, 13.11, 13.16, 14.3, and 14.5.

 GEOLOGY/KARST:

No Concerns

 HERITAGE RESOURCES:

This unit was investigated per the third amended interagency Programmatic Agreement (PA) for historic properties. As 

specified by the PA, any potential adverse effect on historic properties (if any) was mitigated and portions of the Area of 

Potential Effect will be monitored by a qualified heritage specialist during and/or after actual ground disturbance.

 SCENERY:

The Scenic Integrity Objective (SIO) for this unit is Very Low . It is in Timber Production LUD and is considered Not Seen. 

There are no scenery resource concerns.

 RECREATION:

No concerns

 SOILS/WETLANDS:

Alternatives 2, 3, and 5: Slopes range from nearly level to about 33%. Most slopes are less than 25%. There are 72 acres 

(74% of the unit) of forested wetland located in the eastern three-quarters of the unit.

Alternatives 2, 3, and 4:

The soils and wetlands are suitable for shovel yarding. Shovel yarding should follow BMPs 12.5, 13.2 and 13.9. Specifically, 

the shovel operator should avoid the small non-forested areas of the unit to prevent rutting. Slopes over 25% gradient may 

not be suitable for shovel yarding under some soil moisture conditions. Use care when approving shovel yarding on slopes 

over 25% gradient. Avoid track slippage and rutting.

A temporary road will impact 1 acre of forested wetland within the unit. Wetland avoidance was not practicable due to the 

abundance of forested wetland. Provide adequate cross drainage, remove structures, and close the road after harvest (BMP 

14.9) (33 CFR BMPs 4,5, 6).

Alternative 4: There are 66 acres (78% of the unit) of forested wetland located in the eastern three-quarters of the unit. 

Alternative 5: A minimum of partial suspension would meet soil and wetland resource concerns (BMPs 12.5, 13.5, and 13.9)

 WILDLIFE:
Unit 77

Unit includes average snow deer winter range (all of unit except southern edge); most of which is also deep snow marten 

habitat/deer winter range (central portion). Unit is near Honker large OGR complex. Legacy standard and guideline does not 

apply in this VCU.

Alternative 4: Northwestern and southeastern portions of unit removed to reduce impacts to marten and deer habitat and 

sensitive plants. Prescription is group selection with 33% removal by area to minimize impacts to wolves and connectivity 

and maintain other habitat values.

Old-growth Reserve (OGR) Boundary

Alternatives 2, 3 and 5: Unit is not adjacent to OGR boundary 

Alterative 4: Adopts Interagency OGR which is adjacent to northern boundary of unit.
SR

3015200

3015250

3015230

3015240

3015245

3015200

3015230

2.5L.1R

2.5L.1R.3L

2. 5 L.1R.1L

2.5L.1R.2L

2.5L .3 R

2.5L

3.4R

2.5L.1R

2.5L.1R

2 .5L.1L

2.5L

1989

1989

1990

1990

1990

1988 1988

75

75

77

78

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 077 Alternative 2 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Partial Cut

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

578

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt2.mxd 14 July 2012

RR

SR
SR

3015200

3015250

3015230

3015240

3015245

3015200

3015230

2.5L.1R

2.5L.1R.3L

2. 5 L.1R.1L

2.5L.1R.2L

2.5L .3 R

2.5L

3.4R

2.5L.1R

2.5L.1R

2 .5L.1L

2.5L

1989

1989

1990

1990

1990

1988 1988

75

77

78

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 077 Alternative 3 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

578

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt3.mxd 14 July 2012

RR

SR
SR

3015200

3015250

3015230

3015200

3015230

2.5L.1R

2.5L.1R.3L

2. 5 L.1R.1L

2.5L.1R.2L

2.5L .3 R

2.5L

3.4R

2.5L.1R

2.5L.1R

2 .5L.1L

2.5L

1989

1989

1990

1990

1990

1988 1988

75

75

77

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 077 Alternative 4 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

578

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt4.mxd 20 March 2012

RR

SR
SR

3015200

3015250

3015230

2.5L.1R

2.5L.1R.3L

2. 5 L.1R.1L

2.5L.1R.2L

2.5L .3 R

2.5L

3.4R

2.5L.1R

2.5L.1R

2 .5L.1L

2.5L

1989

1989

1990

1990

1990

1988 1988

77

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 077 Alternative 5 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Sytematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

578

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt5.mxd 14 July 2012

RR

SR
Unit 78

Total Unit

Acres:

15.1 Prescription: 33% Removal

VCU

Number:

578 Harvest

System:

Shovel

Net Harvest

Volume

(MBF):

2, 3 - 146

LUD:

Timber Production

 SILVICULTURE:

Existing Condition: This unit has old growth stand structure. The main damage agents affecting tree health and volume loss 

is moderate to high heartwood and stem decay. The overstory is over-mature with declining trees. Mistletoe is moderate to 

high occurrence. Wind hazard is low due to low risk timber type as well as low exposure to storm winds. All nearby previous 

harvest areas have met green-up with regeneration over 5 foot tall and meet NFMA requirements for no longer being 

considered openings.

Silvicultural Objective/Desired Condition: The desired condition for this stand is a highly productive, healthy, windfirm stand 

grown for timber management that retains residual trees as needed to meet standards and guides or other objectives. 

Silvicultural Prescription: Uneven-age Management Group Selection 

Harvest up to 33% of the planned setting acreage in groups of trees up to two acres in size. Group selections should be well 

distributed across the stand. Locate groups to address insect and disease issues or capitalize on existing advanced 

regeneration of desirable tree species where possible. Locate group selections to maintain wildlife travel ways and important 

habitat while maximizing the economics of this entry and also maintaining the feasibility of future harvest entries in the 

remaining old growth portions of the unit. The uneven-aged group selection regeneration method is being prescribed for the 

unit because of its proximity to Unit 77, which is almost 100 acres, and the fact that it is accessed by a different road system, 

so it would not qualify for the +100-acre exemption. In addition, this prescription would maintain large amounts of diverse 

structure to benefit wildlife over the long term, in an area with a considerable amount of clearcut harvest.

 TIMBER/LOGGING:

This unit is planned for shovel yarding to the proposed temporary road.

 ENGINEERING/ROADS:

Unit is accessed by a proposed temporary road, totaling 700 feet, as displayed on the unit card.

 BOTANY:

Lesser round-leaved orchid (sensitive plant) population on the eastern edge of unit was deferred from unit due to small area 

needing deferral and large number of plants (58 individuals) involved.

This unit indirectly affects the lesser round-leaved orchid populations located north and east of the unit.

 FISHERIES:

Streams are tributaries to Thorne River.

Stream#: 2.5L.1R Class: I, II, IV Flagging: B/W, G/W C- Type: PAB, MMO

Concerns: none

Buffer (RMA): Class I and II - greater of 100 feet (PAB) or 120 feet (MMO), flood plain, riparian vegetation or soils, or riparian 

associated wetland fens. Class IV for MMO none.

Alternatives: 2 and 3	 Buffer (RAW): no review needed

Protection: Category A and C 

All other streams in unit: Class: IV Flagging: G/W C- Type: HC or MM

Buffer (RMA): none Buffer (RAW): no review needed

Protection: Category C 

Temporary roads for Unit 78: Alternatives 2 and 3 -- No known stream crossings. The temporary roads have not been field 

verified and will be surveyed before implementation. If any stream crossings are found, crossings structures and locations 

will be approved by USFS, in consultation with fisheries biologist or hydrologist, prior to construction (BMP 14.17). During 

Unit

Number 78 Alternatives 2, 3

Summary of Concerns, Responses, BMPs and Mitigation

 INVASIVE SPECIES:

No Concerns
Unit 78

construction of temporary roads implement BMPs 12.17, 13.10, 13.11, 13.16, 14.3, and 14.5.

 GEOLOGY/KARST:

No Concerns

 HERITAGE RESOURCES:

This unit was investigated per the third amended interagency Programmatic Agreement (PA) for historic properties. As 

specified by the PA, any potential adverse effect on historic properties (if any) was mitigated and portions of the Area of 

Potential Effect will be monitored by a qualified heritage specialist during and/or after actual ground disturbance.

 SCENERY:

The Scenic Integrity Objective (SIO) for this unit is Very Low . It is in Timber Production LUD and is considered Not Seen. 

There are no scenery resource concerns.

 RECREATION:

No concerns

 SOILS/WETLANDS:

Alternatives 2 and 3:

Slopes in this unit are less than 20%. Forested wetlands cover the entire 14-acre unit (BMP 12.5). The soils and wetlands 

are suitable for shovel yarding. Shovel yarding should follow BMPs 12.5, 13.2 and 13.9. Specifically, the shovel operator 

should avoid the small non-forested areas of the unit to prevent rutting. Use care when approving shovel yarding on slopes. 

Avoid track slippage and rutting.

A temporary road will impact 1 acre of forested wetland within the unit. About an additional 0.5 acres of forested wetland will 

be impacted by a temporary road outside of the unit. Construction of temporary roads are required for access, no other 

roads are located in close enough proximity (BMP 12.5, 13.2). Wetland avoidance was not practicable due to the abundance 

of forested wetland. Provide adequate cross drainage, remove structures, and close the road after harvest (BMP 14.9) (33 

CFR BMPs 4, 5, 6).

 WILDLIFE:

Unit includes average snow deer winter range (entire unit). Unit is near Honker large OGR complex. Legacy standard and 

guideline does not apply in this VCU.

Alternative 4: Unit dropped to minimize impacts to wolves and connectivity and maintain other habitat values.
3015255

3015250

3015000

3015230

3015240

3015200

1.8L.2L

1.10L

1.11L.1L.2L 1.11L.1L.1R 1.11L 1.10L

1.8L

2.5 L.1R

2.5L.1R

1.1 1L.1L

1.10R

1.11R

1.11L.1R

1.1 1R

1

2.5L.1R

2.5L

2.5L.1R.3L

2. 5 L.1R.1L

2.5L.1R.2L

1.10L.1L

1.11L.1L.1L

1990

1988

1990

1990

1990

1991

77

78

79

81

82

83

84

75

82

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 078 Alternative 2 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Partial Cut

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

578

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt2.mxd 14 July 2012

RR

SR
3015250

3015000

3015255

3015230

3015240

3015200

1.10L

1.11L.1L.2L 1.11L.1L.1R 1.11L

1.8L

1.10L

2.5 L.1R

2.5L.1R

1.1 1L.1L

1.10R

1.11R

1.11L.1R

1.1 1R

1

2.5L.1R

2.5L

2.5L.1R.3L

2. 5 L.1R.1L

2.5L.1R.2L

1.10L.1L

1.11L.1L.1L

1.8L.2L

1990

1988

1990

1990

1990

1991

77

78

79

81

83

84

75

82

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 078 Alternative 3 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

578

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt3.mxd 14 July 2012

RR

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Unit 79

Total Unit

Acres:

2, 3 - 27.6

4 - 24.4

Prescription: 2, 3 - Clearcut

4 - 33% Removal

VCU

Number:

578 Harvest

System:

Shovel, 

Helicopter

Net Harvest

Volume

(MBF):

2, 3 - 493

4 - 144 LUD:

Timber Production

 SILVICULTURE:

Existing Condition: This unit has old-growth stand structure. Trees are typically moderate defect with poor stem form resulting 

in most defect deductions. Mistletoe was noted as heavy in the eastern half of the unit and moderate to light in the western 

half. The lowlands between drumlin ridges are poorly drained and as a result have reduced site potential and few larger 

diameter trees. There are many dead or dying tops in the western redcedar particularly in larger diameter trees. Windthrow 

risk is low. All adjacent previous harvest areas have met green-up with regeneration over 5 foot tall and meet NFMA 

requirements for no longer being considered openings.

Silvicultural Objective/Desired Condition: The desired condition for this stand is a highly productive, healthy, windfirm stand 

grown for timber management that retains residual trees as needed to meet standards and guides or other objectives. 

Silvicultural Prescription: Even-age Management - Clearcut (Alternatives 2,3)

This stand is being recommended for harvest at this time because it is not expected to obtain the desired condition given the 

current growth trajectory. This stand is over-mature with moderate stem decay and defect resulting in a situation where stand 

growth is being offset or exceeded by decay. Even-aged clear cutting is being prescribed to preclude or minimize the risk of 

windthrow after harvest, promote natural regeneration by opening up the canopy, and minimize defect and disease in the 

future stand to the maximum extent possible.

Silvicultural Prescription: Uneven-age Management Group Selection (Alternative 4)

Harvest up to 33% of the planned setting acreage in groups of trees up to two acres in size. Group selections should be well 

distributed across the stand. Locate groups to address insect and disease issues or capitalize on existing advanced 

regeneration of desirable tree species where possible. Locate group selections to maintain wildlife travel ways and important 

habitat while maximizing the economics of this entry and also maintaining the feasibility of future harvest entries in the 

remaining old growth portions of the unit. The uneven-aged group selection regeneration method is being prescribed for the 

unit or portions of the unit as a means to maintain large amounts of diverse structure to benefit wildlife over the long term.

 TIMBER/LOGGING:

Alternatives 2, 3: This unit is planned for shovel yarding to the proposed temporary road. 

Alternative 4: This unit is planned for helicopter yarding to landings on the existing NFS road 3015000.

 ENGINEERING/ROADS:

Unit is accessed by a proposed temporary road in Alternatives 2 and 3, totaling 4,000 feet, as displayed on the unit card. 

Approximately 1,600 feet will be constructed across a decommissioned road bed.

 BOTANY:

Alternatives 2 and 3

One lesser round-leaved orchid (sensitive plant) population partially inside unit, two small areas (<0.7 acre total) dropped 

due to minor effect on unit and contiguous habitat with TTRA buffer. Approx. 80% of population of 15 plants is outside of unit.

Unit indirectly affects portions of the same lesser round-leaved orchid population located on north edge of unit in TTR buffer.

Alternative 4 

One lesser round-leaved orchid population (15 individuals) was partially inside original unit; three areas (mostly with marginal 

timber resources) were dropped to completely avoid direct effects.

Unit indirectly affects portions of the same lesser round-leaved orchid population located on north edge of unit in TTR buffer.

Unit

Number 79 Alternatives 2, 3, 4

Summary of Concerns, Responses, BMPs and Mitigation
Unit 79

 FISHERIES:

Streams are tributaries to Thorne River. 

Stream#: 1 Class: I Flagging: B/W C- Type: MMS, PAB

Concerns: none 

Buffer (RMA): Class I - greater of 120 feet (MMS) or 100 feet (PAB), flood plain, riparian vegetation or soils, or riparian 

associated wetland fens. 

Alternatives: 2, 3, and 4 Buffer (RAW): no review needed

Protection: Category A 

Stream#: 1.8L Class: I, II Flagging: B/W C- Type: PAO, MMO, HCO

Concerns: none

Buffer (RMA): Class I - greater of 100 feet (PAO) or 120 feet (MMO), flood plain, riparian vegetation or soils, or riparian 

associated wetland fens. Class I and II for HCO greater of 100 feet or to the top of the side-slope break. 

Alternatives: 2, 3, and 4 Buffer (RAW): no review needed

Protection: Category A

Stream#: 1.9L Class: II Flagging: B/W C- Type: MMO

Concerns: none

Buffer (RMA): Class II for MMO greater of 120 feet, flood plain, riparian vegetation or soils, or riparian associated wetland 

fens. 

Alternatives: 2, 3, and 4 Buffer (RAW): no review needed

Protection: Category A 

All other streams in unit: Class: IV Flagging: G/W C- Type: HC or MM

Buffer (RMA): none Buffer (RAW): no review needed.

Protection: Category C 

Temporary roads (new and reopened decommissioned) for Unit 79: Alternatives 2 and 3 -- Two Class IV stream crossings. 

The temporary roads have not been field verified and will be surveyed before implementation. A portion of the temporary 

road would be reopened decommissioned roadbed. Crossings would be for new temporary roads. Crossings structures and 

locations will be approved by USFS, in consultation with fisheries biologist or hydrologist, prior to construction (BMP 14.17). 

During construction of temporary roads implement BMPs 12.17, 13.10, 13.11, 13.16, 14.3, and 14.5.

 GEOLOGY/KARST:

No Concerns

 HERITAGE RESOURCES:

This unit was investigated per the third amended interagency Programmatic Agreement (PA) for historic properties. As 

specified by the PA, any potential adverse effect on historic properties (if any) was mitigated and portions of the Area of 

Potential Effect will be monitored by a qualified heritage specialist during and/or after actual ground disturbance.

 SCENERY:

The Scenic Integrity Objective (SIO) for this unit is Very Low . It is in Timber Production LUD and is considered Not Seen. 

There are no scenery resource concerns.

 RECREATION:

No concerns

 SOILS/WETLANDS:

Alternatives 2 and 3:

Slopes are less than 20%. Forested wetlands occupy about 30% of the unit. The soils and wetlands are suitable for shovel 

yarding. Shovel yarding should follow BMPs 12.5, 13.2 and 13.9. Specifically, the shovel operator should avoid the small nonforested areas of the unit to prevent rutting. Use care when approving shovel yarding on slopes. Avoid track slippage and 

rutting.

Alternative 4:

A minimum of partial suspension would meet soil resource concerns (BMPs 12.5, 13.5, and 13.9)

 WILDLIFE:

 INVASIVE SPECIES:

No Concerns
Unit 79

Unit includes average snow deer winter range (entire unit), most of which is also deep snow marten habitat/deer winter range 

(near northern end). Unit is near Honker large OGR complex. Legacy standard and guideline does not apply in this VCU.

Alternative 4: Northwestern portion of unit dropped to avoid sensitive plants, marten habitat, and deer winter range. 

Prescription is group selection with 33% removal by area, to minimize impacts to wolves and connectivity and maintain other 

habitat values.
3015255

3015000

3015200

3015107

1.8R

1.6 R

1

1.5 R

1.8L

1.8L

1.9R

1.9L

1

1

1.7R.1L

1.7R.1L.3L

1.4R

1.5 R

1. 5R.1R

1.7R.3L

1 7. R.1L

1.7R.1L

1.8L.1L

1.7 R

1.7R

1.7R.2L

1.7R.1L.2L

1.8L.2L

1 7. R.1L.1L

1.10R

1.7

R

1.7R.1R

1 6. R.1 L

1988

2000

1988

1991

1990

1974

70

71

78

79

80

82 84

81

70

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 079 Alternative 2 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Partial Cut

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

578

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt2.mxd 14 July 2012

RR

SR
3015000

3015255

3015200

3015107

1.6 R

1

1.5 R

1.8L

1.8L

1.9L

1.9R

1

1

1.7R.1L

1.7R.1L.3L

1.4R

1.5 R

1. 5R.1R

1.7R.3L

1 7. R.1L

1.7R.1L

1.8L.1L

1.7 R

1.7R

1.7R.2L

1.7R.1L.2L

1.8L.2L

1 7. R.1L.1L

1.10R

1.7

R

1.7R.1R

1 6. R.1 L

1.8R

1991

2000

1988

1988

1990

1974

71

78

79

80

81

82 84

70

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 079 Alternative 3 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

578

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt3.mxd 14 July 2012

RR

SR
3015255

3015000

3015200

1.7 R

1.6 R

1

1.5 R

1.7R.1L

1.8L

1.9R

1.9L

1

1

1.8L

1.7R.1L.3L

1.4R

1.5 R

1. 5R.1R

1.7R.3L

1 7. R.1L

1.7R.1L

1.8L.1L

1.8R

1.7R

1.7R.2L

1.7R.1L.2L

1.8L.2L

1 7. R.1L.1L

1.10R

1.7

R

1.7R.1R

1 6. R.1 L

1991

2000

1988

1990

1988 1974

70

71

79

80

81

84

70

82

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 079 Alternative 4 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

578

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt4.mxd 20 March 2012

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Unit 80

Total Unit

Acres:

2, 3 - 59.6

4, 5 - 84.9

Prescription: 2, 3 - Clearcut

4, 5 - 50% 

Removal

VCU

Number:

579 Harvest

System:

Cable, 

Shovel, 

Net Harvest

Volume

(MBF):

2, 3 - 1,702

4, 5 - 1,211 LUD:

Modified Landscape

Timber Production

 SILVICULTURE:

Existing Condition: This unit is predominantly old-growth. Stem decay is the main damage factor affecting tree health and 

volume loss across the area. Defect is highest within the larger western redcedar and western hemlock. Stem decay and 

defect are moderate to high overall. Mistletoe is moderate in occurrence. Windthrow risk is moderate. All adjacent previous 

harvest areas have met green-up with regeneration over 5 foot tall and meet NFMA requirements for no longer being 

considered openings.

Silvicultural Objective/Desired Condition: The desired condition for this stand is a highly productive, healthy, windfirm stand 

grown for timber management that retains residual trees as needed to meet standards and guides or other objectives. 

Silvicultural Prescription: Even-age Management-Clearcut (Alternatives 2, 3)

This stand is being recommended for harvest at this time because it is not expected to obtain the desired condition given the 

current growth trajectory. This stand is over-mature with moderate to high stem decay and defect resulting in a situation 

where stand growth is being offset or exceeded by decay. Even-aged clear cutting is being prescribed to preclude or 

minimize the risk of windthrow after harvest, promote natural regeneration by opening up the canopy, and minimize defect 

and disease in the future stand to the maximum extent possible. 

The legacy standard and guide applies in VCU 5790 which is the majority of the unit other than the southernmost polygon 

(VCU 5780). This requires that 30% or 26 acres of the entire planned unit area be retained in productive old growth 

representative of the overall composition of the planned harvest area. This retention is to be maintained indefinitely. The 

combination of units 80, 81, 82 and 83 create a situation where the maximum opening size allowed under NFMA could be 

exceeded. The required legacy structure is to be placed to keep the potential opening under 100 acres while building off of 

RMA corridors, reducing road construction and promoting wildlife travel by maintaining a POG corridor across the unit. 

Adjustments to the planned unit and legacy placement during implementation are allowed as long as the final configuration 

meets these objectives and maintains the appropriate acreage and stand characteristics.

Silvicultural Prescription: Uneven-age Management Single Tree Selection (Alternatives 4, 5)

Maintain at least 50 percent of the setting pretreatment basal area, based on standing live tree total for the unit, uncut. 

Individual trees selected for harvest may occur in small groups but will generally be evenly distributed across the stand. Any 

small groups will usually be less than one acre but may occasionally go up to two acres in size where needed to address 

insect and disease issues or capitalize on existing advanced regeneration of desirable tree species. Trees selected for 

harvest will generally be well distributed and no large openings will occur as a result of the harvest. Review the marking 

guides and silvicultural prescription for more detailed information and direction for how to implement this prescription. The 

uneven-aged single tree selection regeneration method is being prescribed for this unit in Alternative 4 specifically to 

maintain intact diverse structure for wildlife needed at this time and place in the landscape to meet the objectives of this 

alternative. This system is not optimum for promoting timber production but is being prescribed in alternative 4 primarily to 

mitigate the overall effects of the project on wildlife. 

Legacy is not required For Alternatives 4 and 5 since the uneven-age management prescription will leave sufficient stand 

structure.

 TIMBER/LOGGING:

Alternatives 2, 3: This unit is planned for a combination of shovel and cable yarding. Cable settings are planned for yarding to 

landings on the proposed NFS road 3015107. Shovel settings are planned for yarding to the existing NFS road 3015000. 

Alternative 4, 5: This unit is planned for helicopter yarding to a proposed temporary road accessing unit 82, and the existing 

NFS road 3015000.

 ENGINEERING/ROADS:

Unit

Number 80 Alternatives 2, 3, 4, 5

Summary of Concerns, Responses, BMPs and Mitigation
Unit 80

 ENGINEERING/ROADS:

Unit is accessed by proposed NFS road 3015107 in Alternatives 2,and 3, totaling 6000 feet, as displayed on the unit card. 

Approximately 2200 feet of this road will be constructed across decommissioned road bed. See road card for detailed 

information.

 BOTANY:

No Concerns

 FISHERIES:

Streams are tributaries to Thorne River.

Stream#: 1.6R Class: I, II Flagging: B/W C- Type: MMO, HCM, HCO

Concerns: blowdown and steep side-slopes with mobile sediment

Buffer (RMA): Class I and II for MMO greater of 120 feet, flood plain, riparian vegetation or soils, or riparian associated 

wetland fens. Class II for HCM and HCO greater of 100 feet or to the top of the side-slope break. 

Alternatives: 2, 3, 4, and 5 Buffer (RAW): Will be identified by IDT during layout.

Protection: Category A 

Stream#: 1.6R.1L Class: II Flagging: B/W C- Type: MMO, HCM, HCO

Concerns: none

Buffer (RMA): Class II for MMO greater of 120 feet, flood plain, riparian vegetation or soils, or riparian associated wetland 

fens. 

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review required

Protection: Category A 

Stream#: 1.7R Class: I, II, IV Flagging: B/W, G/W C- Type: MMS, MMO, HCM, HCO

Concerns: blowdown, steep side-slopes, and active erosion

Buffer (RMA): Class I and II for MMS and MMO greater of 120 feet, flood plain, riparian vegetation or soils, or riparian 

associated wetland fens. Class II for HCM and HCO greater of 100 feet or to the top of the side-slope break. Class IV for 

HCO none.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed 

Protection: Category A and C 

Stream#: 1.7R.1R Class: II Flagging: B/W C- Type: HCO

Concerns: none

Buffer (RMA): Class II for HCO greater of 100 feet or to the top of the side-slope break. 

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed

Protection: Category A 

Stream#: 1.7R.1L Class: II, IV Flagging: B/W, G/W C- Type: HCO, MMO

Concerns: none

Buffer (RMA): Class II for HCO greater of 100 feet or to the top of the side-slope break. Class II for MMO greater of 120 feet, 

flood plain, riparian vegetation or soils, or riparian associated wetland fens. Class IV for HCO none.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): Will be identified by IDT during layout.

Protection: Category A and C 

Stream#: 1.10R Class: II, III, IV Flagging: B/W, O/W, G/W C- Type: HCO

Concerns: steep sides-slopes with mobile sediment

Buffer (RMA): Class II for HCO greater of 100 feet or to the top of the side-slope break. Class III for HCO to the top of the 

side-slope break. Class IV for HCO none.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): Will be identified by IDT during layout

Protection: Category A, B, and C 

Stream#: 1.10R.1R Class: II, IV Flagging: B/W, G/W C- Type: HCO

Concerns: blowdown

Buffer (RMA): Class II for HCO greater of 100 feet or to the top of the side-slope break. Class IV for HCO none.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): Will be identified by IDT during layout.

Protection: Category A and C 

Stream#: 1 Class: II, III Flagging: B/W, O/W C- Type: HCM

 INVASIVE SPECIES:

No Concerns
Unit 80

Concerns: blowdown, steep side-slopes with mobile sediment, and active erosion

Buffer (RMA): Class II for HCM greater of 100 feet or to the top of the side-slope break. Class III for HCM to the top of the 

side-slope break. 

Alternatives: 2, 3, 4, and 5 Buffer (RAW): Will be identified by IDT during layout.

Protection: Category A and B 

All other streams in unit: Class: IV Flagging: G/W C- Type: HC or MM

Buffer (RMA): none Buffer (RAW): no review needed

Protection: Category C

 GEOLOGY/KARST:

No Concerns

 HERITAGE RESOURCES:

This unit was investigated per the third amended interagency Programmatic Agreement (PA) for historic properties. As 

specified by the PA, any potential adverse effect on historic properties (if any) was mitigated and portions of the Area of 

Potential Effect will be monitored by a qualified heritage specialist during and/or after actual ground disturbance.

 SCENERY:

The Scenic Integrity Objectives (SIO) of this unit are Low and Very Low, with the Low SIO covering about 16 acres. The unit 

is mostly in Middleground distance zone, but the majority of the unit is in Timber Production LUD. The northern portion of the 

unit, which is in Modified Landscape LUD, is where the Low SIO occurs. The Low SIO area is more than 2 miles from the 

Thorne Bay-Control Lake highway and the Thorne River, which are Visual Priority Travel Routes. No concerns.

 RECREATION:

No concerns

 SOILS/WETLANDS:

Slopes range between 15 and 70%, averaging about 55%. There is a cliff with slopes >72% less than 1/2 acre in size just 

below the upper proposed road .These steep slopes are suitable for harvest with minimum partial suspension. There is a 

muskeg located in the unit and the unit is approximately 60% forested wetland. A minimum of partial suspension would meet 

soil and wetland resource concerns (BMPs 12.5, 13.5, and 13.9).

 WILDLIFE:

Unit includes average snow deer winter range (entire unit), most of which is also deep snow marten habitat/deer winter range 

(southern, northwestern,and northeastern settings). Unit is near Honker large OGR complex. Legacy standard and guideline 

applies in this VCU; Legacy acres cover some deer winter range.

Alternative 4: Helicopter yarding and 50% basal area removal to minimize impacts to wolves and connectivity between areas 

of past harvest, maintain other habitat values, and minimize road building (and effects associated with increased access). 

No Legacy acres required because adequate structure retained in unit under uneven-aged harvest prescription (i.e., no 

openings larger than 20 acres).
3015100

3015250

3015110

3015105

3015255

3015000

3015107

3015200

1.7 R

1.11L .1L.1R

1.6 R

1 1.5 R

1.10R.1R

1.8L

1

1.11L

1.7R.1L

1.8L

1.10L.1L

1 .11L.1L

1.1L

1.9L

1

1

1.6R

1.2R

1.7R.1L.3L

1.5R

1.11L.1R

1.5 R

1.5 R.1R

1 6. R.1L

1.9R

1

1.7R.3L

1 7. R.1L

1.1 0R.1R

1.7R.1L

1.10L

1.8L.1L

1.12L

1 7. R.1L.1L

1.13L

1.7R

1.5R.1L

1.3R

1.7R.2L

1.11L.1L.1L

1.10R.1L

1.7R.1L.2L

1.8L.2L

1.10R

1.10 R.1R.1L

1.10L

1.11L.1L.2L

1.12R

1

1 .5R.2R

.5R

1.10R

1.4R

1.7 R

1. 1 1R

1.7R.1R

1.6R. 1 L

1.6 R

1.8R

1.14 L

2000

1995 1990

1990

1966

1988

1966

1974

1966

1966

1988

1990

1966

1991

70

70

71

79

80

81

82

82

83

84

69

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 080 Alternative 2 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Partial Cut

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

578,579

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt2.mxd 14 July 2012

RR

SR
3015250

3015110

3015105

3015255

3015000

3015100

3015200

3015107

1.6 R

1 1.5 R

1.10R.1R

1.8L

1

1.11L

1.7R.1L

1.8L

1 .11L.1L

1.1L

1.7R.2L

1.9L

1

1

1.6R

1.2R

1.7R.1L.3L

1.5R

1.11L.1R

1.5 R

1.5 R.1R

1 6. R.1L

1.9R

1

1.7R.3L

1 7. R.1L

1.1 0R.1R

1.7R.1L

1.10L

1.8L.1L

1.12L

1 7. R.1L.1L

1.13L

1.7R

1.5R.1L

1.10L.1L

1.3R

1.11L.1L.1L

1.10R.1L

1.7R.1L.2L

1.8L.2L

1.10R

1.10 R.1R.1L

1.10L

1.11L.1L.2L

1.12R

1

1 .5R.2R

.5R

1.10R

1.4R

1.7 R

1.1 1 R

1.7R.1R

1.6R. 1 L

1.6 R

1.8R

1.14 L

1.7 R

1.11L .1L.1R

1990

2000

1995

1990

1966

1988

1966

1974 1991

1966 1988

1990

1966

1966

70

71

79

80

81

82

83

84

69

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 080 Alternative 3 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

578,579

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt3.mxd 14 July 2012

RR

SR
3015000

3015100

3015250

3015110

3015105

3015255

3015200

1.14 L

1.7 R

1.3R

1.6 R

1 1.5 R

1.10R.1R

1.8L

1

1.11L

1.7R.1L

1.5R.1L

1.6R

1 .11L.1L

1.1L

1.9L

1

1

1.8L

1.2R

1.7R.1L.3L

1.5R

1.11L.1R

1.5 R

1.5 R.1R

1 6. R.1L

1.9R

1

1.7R.3L

1 7. R.1L

1.1 0R.1R

1.7R.1L

1.10L

1.8L.1L

1.12L

1 7. R.1L.1L

1.13L

1.7R

1.11L .1L.1R

1.10L.1L

1.7R.2L

1.11L.1L.1L

1.10R.1L

1.7R.1L.2L

1.8L.2L

1.10R

1.10 R.1R.1L

1.10L

1.11L.1L.2L

1.12R

1

1 .5R.2R

.5R

1.10R

1.4R

1.7 R

1. 1 1R

1.7R.1R

1.6R. 1 L

1.6 R

1.8R

2000

1995 1990

1990

1966

1988

1966

1966

1974

1966

1991

1988

1990

1966

70

70

71

79

80

81

82

82

83

84

69

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 080 Alternative 4 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

578,579

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt4.mxd 20 March 2012

RR

SR
3015250

3015110

3015200

3015105

3015255

3015000

3015100

1.11L .1L.1R

1.6 R

1 1.5 R

1.10R.1R

1.8L

1

1.11L

1.7R.1L

1.8L

1 .11L.1L

1.10L.1L

1.1L

1.9L

1

1

1.6R

1.2R

1.7R.1L.3L

1.5R

1.11L.1R

1.5 R

1.5 R.1R

1 6. R.1L

1.9R

1

1.7R.3L

1 7. R.1L

1.1 0R.1R

1.7R.1L

1.10L

1.8L.1L

1.12L

1 7. R.1L.1L

1.13L

1.7R

1.5R.1L

1.3R

1.7R.2L

1.11L.1L.1L

1.10R.1L

1.7R.1L.2L

1.8L.2L

1.10R

1.10 R.1R.1L

1.10L

1.11L.1L.2L

1.12R

1

1 .5R.2R

.5R

1.10R

1.4R

1.7 R

1. 1 1R

1.7R.1R

1.6R. 1 L

1.6 R

1.8R

1.14 L

1.7 R

1995

2000

1990

1990

1966

1988

1966

1991

1966 1988

1966

1990

1966

1974

70

70

71

80

81

82

82

83

84

69

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 080 Alternative 5 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Sytematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

578,579

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt5.mxd 14 July 2012

RR

SR
Unit 81

Total Unit

Acres:

2, 3 - 52.0

4 - 59.2

5 - 61.2

Prescription: 2, 3, 5 - Clearcut

4 - 33% Removal

5 - 50%

VCU

Number:

578,

 579

Harvest

System:

Shovel, 

Helicopter

Net Harvest

Volume

(MBF):

2, 3 - 1,589

4 - 597

5 - 1,507

LUD:

Modified Landscape, 

Timber Production

 SILVICULTURE:

Existing Condition: This unit has old-growth stand structure. Mistletoe infection is variable with an overall rating of moderate. 

Stem decay is the main damage. Defect and decay are moderate overall. Windthrow risk is moderate. All adjacent previous 

harvest areas have met green-up with regeneration over 5 feet tall and meet NFMA requirements for no longer being 

considered openings.

Silvicultural Objective/Desired Condition: The desired condition for this stand is a highly productive, healthy, windfirm stand 

grown for timber management that retains residual trees as needed to meet standards and guides or other objectives. 

Silvicultural Prescription: Even-age Management-Clearcut (Alternatives 2, 3, Shovel settings in Alternative 5)

This stand is being recommended for harvest at this time because it is not expected to obtain the desired condition given the 

current growth trajectory. This stand is over-mature with moderate to high stem decay and defect resulting in a situation 

where stand growth is being offset or exceeded by decay. Even-aged clear cutting is being prescribed to preclude or 

minimize the risk of windthrow after harvest, promote natural regeneration by opening up the canopy, and minimize defect 

and disease in the future stand to the maximum extent possible. 

The legacy standard and guide applies in VCU 5790 which is the northeastern 1/3 of the unit (24.4 acres). The remainder is 

in VCU 5780. This requires that 30% of the portion of the unit in VCU 5790 or 7 acres of this area be retained in productive 

old growth representative of the overall composition of the planned harvest area. This retention is to be maintained 

indefinitely and must be within VCU 5790. The combination of units 80, 81, 82 and 83 create a situation where the 

maximum opening size allowed under NFMA could be exceeded. The required legacy structure is placed to keep the 

potential opening under 100 acres while adding RAW along RMA corridors, protecting sensitive plants in the eastern corner 

of the unit and reducing road construction and promoting wildlife travel by maintaining POG corridors across the unit. 

Mapped legacy totals about 10 acres. Adjustments to the planned unit and legacy placement during implementation are 

allowed as long as the final configuration meets these objectives and maintains the appropriate acreage and stand 

characteristics. 

Silvicultural Prescription: Uneven-age Management Group Selection (Alternative 4 Shovel Settings)

Harvest up to 33% of the planned setting acreage in groups of trees up to 2 acres in size. Group selections should be well 

distributed across the stand. Locate groups to address insect and disease issues or capitalize on existing advanced 

regeneration of desirable tree species where possible. Locate group selections to maintain wildlife travel ways and important 

habitat while maximizing the economics of this entry and also maintaining the feasibility of future harvest entries in the 

remaining old growth portions of the unit. The uneven-aged group selection regeneration method is being prescribed for the 

unit or portions of the unit as a means to maintain large amounts of diverse structure to benefit wildlife over the long term. 

No legacy set-aside acres are required.Legacy is not required since the uneven-age management prescription will leave 

sufficient stand structure.

Silvicultural Prescription: Uneven-age Management Single Tree Selection (Alternative 4, 5 helicopter settings)

Maintain at least 50 percent in Alternative 5, and 75% in Alternative 4 of the setting pretreatment basal area, based on 

standing live tree total for the unit, uncut. Individual trees selected for harvest may occur in small groups but will generally be 

evenly distributed across the stand. Any small groups will usually be less than one acre but may occasionally go up to two 

acres in size where needed to address insect and disease issues or capitalize on existing advanced regeneration of 

desirable tree species. Trees selected for harvest will generally be well distributed and no large openings will occur as a 

result of the harvest. Review the marking guides and silvicultural prescription for more detailed information and direction for 

how to implement this prescription. The uneven-aged single tree selection regeneration method is being prescribed for this 

unit in Alternative 4 specifically to maintain intact diverse structure for wildlife needed at this time and place in the landscape 

to meet the objectives of this alternative. This system is not optimum for promoting timber production but is being prescribed 

in alternative 4 primarily to mitigate the overall effects of the project on wildlife. The uneven-aged single tree selection 

regeneration method is being prescribed for this unit in Alternative 5 specifically to maintain significant vegetative cover postharvest in this watershed at this time in order to reduce the potential for erosion and other possible cumulative effects of 

Unit

Number 81 Alternatives 2, 3, 4, 5

Summary of Concerns, Responses, BMPs and Mitigation
Unit 81

additional timber harvest. This system is not optimum for promoting timber production but is being prescribed primarily to 

mitigate the overall effects of the project on watersheds and fish. Legacy is not required since the uneven-age management 

prescription will leave sufficient stand structure.

 TIMBER/LOGGING:

Alternatives 2, 3: This unit is planned for shovel yarding to existing NFS road 3015000. 

Alternatives 4, 5: This unit is planned for a combination of shovel and helicopter yarding in Alternatives 4 and 5. Shovel 

settings are planned for yarding to existing NFS road 3015000. Helicopter settings are planned for yarding to landings on 

existing NFS road 3015000.

 ENGINEERING/ROADS:

No proposed road construction.

 BOTANY:

Alternative 2 and 3

One lesser round-leaved orchid (sensitive plant) population (1 individual) is inside unit and one population (19 individuals) is 

mostly in legacy. Direct effects are likely and the unit may indirectly affect these populations as well.

Alternative 4

Two populations in unit (1 and 19 individuals). Large population is mostly in deferred area; small population area would be 

harvested. Prescription is group selection with 33% removal and direct impacts to plants will largely be avoided during this 

entry. This unit may indirectly impact these populations.

Alternative 5

Two lesser round-leaved orchid (sensitive plant) populations (1 and 19 individual)s are inside unit. The large population is 

mostly in the helicopter-50% removal setting. Direct effects on the small population are likely; however, direct effects on the 

larger population are not as likely. Directional felling away from individual plants should be practiced to the extent possible 

for these populations. Indirect effects on these populations may occur as well.

 FISHERIES:

Streams are tributaries to Thorne River. 

Stream#: 1 Class: I Flagging: B/W C- Type: PAB, MMS, HCM

Concerns: none

Buffer (RMA): Class I - greater of 100 feet (PAB) or 120 feet (MMS), flood plain, riparian vegetation or soils, or riparian 

associated wetland fens. Class I for HCM greater of 100 feet or to the the top of the side-slope break.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): Will be identified by IDT during layout.

Protection: Category A 

Stream#: 1.7R Class: I, II Flagging: B/W C- Type: MMS, MMO, HCM, HCO

Concerns: Blowdown and steep side-slopes

Buffer (RMA): Class I for MMS and Class I and II for MMO greater of 120 feet, flood plain, riparian vegetation or soils, or 

riparian associated wetland fens. Class II for HCM and HCO greater of 100 feet or to the top of the side-slope break. 

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed 

Protection: Category A 

Stream#: 1.7R.1L Class: I, II Flagging: B/W C- Type: MMO, HCM, HCO

Concerns: none

Buffer (RMA): Class I for MMO greater of 120 feet, flood plain, riparian vegetation or soils, or riparian associated wetland 

fens. Class II for HCM and HCO greater of 100 feet or to the top of the side-slope break. 

Alternatives: 2, 3, 4, and 5 Buffer (RAW): Will be identified by IDT during layout.

Protection: Category A 

Stream#: 1.7R.1L.3L Class: II Flagging: B/W C- Type: MMO 

Concerns: none

Buffer (RMA): Class II for MMO greater of 120 feet, flood plain, riparian vegetation or soils, or riparian associated wetland 

fens. 

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed

Protection: Category A 

 INVASIVE SPECIES:

No Concerns
Unit 81

Stream#: 1.9R Class: II, III, IV Flagging: B/W, O/W, G/W C- Type: PAO, HCM, MMO

Concerns: blowdown

Buffer (RMA): Class II for PAO greater of 100 feet, flood plain, riparian vegetation or soils, or riparian associated wetland 

fens. Class III for HCM to the top of the side-slope break. Class IV for MMO none.

Alternatives: 2, 3, 4, and 5 	Buffer (RAW): Will be identified by IDT during layout.

Protection: Category A, B, and C 

Stream#: 1.10R Class: II Flagging: B/W C- Type: HCO

Concerns: blowdown

Buffer (RMA): Class II for HCO greater of 100 feet or to the top of the side-slope break.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): Will be identified by IDT during layout.

Protection: Category A 

Stream#: 1.10R.1R Class: II, IV Flagging: B/W, G/W C- Type: HCO

Concerns: blowdown

Buffer (RMA): Class II for HCO greater of 100 feet or to the top of the side-slope break. Class IV for HCO none.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): Will be identified by IDT during layout.

Protection: Category A and C 

All other streams in unit: Class: IV Flagging: G/W C- Type: HC or MM

Buffer (RMA): none Buffer (RAW): no review needed.

Protection: Category C

 GEOLOGY/KARST:

No Concerns

 HERITAGE RESOURCES:

This unit was investigated per the third amended interagency Programmatic Agreement (PA) for historic properties. As 

specified by the PA, any potential adverse effect on historic properties (if any) was mitigated and portions of the Area of 

Potential Effect will be monitored by a qualified heritage specialist during and/or after actual ground disturbance.

 SCENERY:

The Scenic Integrity Objective (SIO) for this unit is Very Low . It is mostly in Timber Production LUD and is considered Not 

Seen. There are no scenery resource concerns.

 RECREATION:

No concerns

 SOILS/WETLANDS:

Slopes are generally 5 to 35% with some slopes averaging about 70%. Forested wetlands occur in about 60% of the unit. 

The soils and wetlands are suitable for a minimum partial suspension yarding or shovel yarding. All logging systems should 

follow BMPs 12.5, 13.2 and 13.9. Slopes over 25% gradient may not be suitable for shovel yarding under some soil moisture 

conditions. Use care when approving shovel yarding on slopes over 25% gradient. Avoid track slippage and rutting.

 WILDLIFE:

Unit includes average snow deer winter range (entire unit ), some of which is also deep snow marten winter habitat/deer 

winter range (western half of unit). Legacy standard and guideline applies to portion of unit in VCU 5790. Legacy acres cover 

some average snow deer winter range.

Alternative 4: Eastern portion of unit helicopter yarding, remainder of unit group selection (33% removal) to minimize impacts 

to wolves and connectivity between areas of past harvest, maintain other habitat values, and minimize road building. No 

legacy acres required because adequate structure retained in unit under uneven-aged harvest prescription (i.e., no openings 

larger than 20 acres.

Alternative 5: No Legacy acres required because adequate structure retained in unit under uneven-aged harvest prescription 

(i.e., no openings larger than 20 acres).
3015255

3015000

3015105

3015250

3015107

1.6R

1

1.10R.1R

1.11L.1 L

1.8L

1.6R

1.7R.1L

1.8L

1.10L.1L

1.9L

1

1.11L

1.7R.1L.3L

1.11L.1R

1

1.9R

1

1 7. R.3L

1 7. R.1L

1.10R.1R

1.7R.1L

1.10L

1.8L.1L

1 7. R.1L.1L

1.7R

1.7 R

1.7R.2L

1.10R.1L

1.7R.1L .2L

1.8L.2L

1.10R

1.1 0R.1R.1L

1.10L

1.11 L 1. L

1. R

1.10R

1.7

R

1. 11 R

1.7R.1R

1 6. R.1 L

1.8R

1974

1990

1988

1991

1988

1990

1966

70

71

79

80

81

82

82

84

70

83

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 081 Alternative 2 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Partial Cut

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

578,579

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt2.mxd 14 July 2012

RR

SR
3015255

3015105

3015250

3015000

3015107

1

1.10R.1R

1.11L.1 L

1.8L

1.11L

1.7R.1L

1.8L

1.9L

1

1.6R

1.7R.1L.3L

1.11L.1R

1

1.9R

1

1 7. R.3L

1 7. R.1L

1.10R.1R

1.7R.1L

1.10L

1.8L.1L

1 7. R.1L.1L

1.7R

1.10L.1L

1.7R.2L

1.10R.1L

1.7R.1L .2L

1.8L.2L

1.10R

1.1 0R.1R.1L

1.10L

1.11 L 1. L

1. R

1.10R

1.7

R

1. 11 R

1.7R.1R

1 6. R.1 L

1.8R

1.7 R

1.6R 1974

1990

1988

1966

1988

1990

1991

71

79

80

81

82

83

70

84

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 081 Alternative 3 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

578,579

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt3.mxd 14 July 2012

RR

SR
3015000

3015105

3015250

3015255

1.8R

1.7 R

1.6R

1

1.10R.1R

1.11L.1 L

1.8L

1.11L

1.7R.1L

1.8L

1.9L

1

1.6R

1.7R.1L.3L

1.11L.1R

1

1.9R

1

1 7. R.3L

1 7. R.1L

1.10R.1R

1.7R.1L

1.10L

1.8L.1L

1 7. R.1L.1L

1.7R

1.10L.1L

1.7R.2L

1.10R.1L

1.7R.1L .2L

1.8L.2L

1.10R

1.1 0R.1R.1L

1.10L

1.11 L 1. L

1. R

1.10R

1.7

R

1. 11 R

1.7R.1R

1 6. R.1 L

1988

1990

1988

1966

1990

1991

1974

70

71

79

80

81

82

83

84

70

82

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 081 Alternative 4 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

578,579

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt4.mxd 20 March 2012

RR

SR
3015000

3015105

3015250

3015255

1.7 R

1.6R

1

1.10R.1R

1.11L.1 L

1.8L

1.11L

1.7R.1L

1.8L

1.9L

1

1.6R

1.7R.1L.3L

1.11L.1R

1

1.9R

1

1 7. R.3L

1 7. R.1L

1.10R.1R

1.7R.1L

1.10L

1.8L.1L

1 7. R.1L.1L

1.7R

1.10L.1L

1.7R.2L

1.10R.1L

1.7R.1L .2L

1.8L.2L

1.10R

1.1 0R.1R.1L

1.10L

1.11 L 1. L

1. R

1.10R

1.7

R

1. 11 R

1.7R.1R

1 6. R.1 L

1.8R

1991

1990

1988

1966

1990

1988 1974

70

71

80

81

82

82

84

70

83

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 081 Alternative 5 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Sytematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

578,579

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt5.mxd 14 July 2012

RR

SR
Unit 82

Total Unit

Acres:

7.5 Prescription: 2, 3, 5 - Clearcut

4 - 33% Removal

VCU

Number:

578,

 579

Harvest

System:

Shovel

Net Harvest

Volume

(MBF):

2, 3, 5 - 117

4 - 39 LUD:

Modified Landscape, 

Timber Production

 SILVICULTURE:

Existing Condition: Unit 82 has old-growth stand structure. Stem decay is the main damage factor affecting tree health and 

volume loss across the area. Defect is moderate to high being highest within the larger western redcedar and western 

hemlock. Windthrow risk is moderate. All adjacent previous harvest areas have met green-up with regeneration over 5 feet 

tall and meet NFMA requirements for no longer being considered openings.

Silvicultural Objective/Desired Condition: The desired condition for this stand is a highly productive, healthy, windfirm stand 

grown for timber management that retains residual trees as needed to meet standards and guides or other objectives. 

Silvicultural Prescription: Even-age Management (Alternatives 2, 3, 5)

This stand is being recommended for harvest at this time because it is not expected to obtain the desired condition given the 

current growth trajectory. This stand is over-mature with moderate to high stem decay and defect resulting in a situation 

where stand growth is being offset or exceeded by decay. Even-aged clear cutting is being prescribed to preclude or 

minimize the risk of windthrow after harvest, promote natural regeneration by opening up the canopy, and minimize defect 

and disease in the future stand to the maximum extent possible. 

The legacy standard and guide applies in VCU 5790 which is in the eastern 2/3 of the unit. The opening created by the unit is 

less than 20 acres therefore no legacy set-aside is required. 

Silvicultural Prescription: Uneven-age Management Group Selection (Alternative 4)

Harvest up to 33% of the planned setting acreage in groups of trees up to two acres in size. Group selections should be well 

distributed across the stand. Locate groups to address insect and disease issues or capitalize on existing advanced 

regeneration of desirable tree species where possible. Locate group selections to maintain wildlife travel ways and important 

habitat while maximizing the economics of this entry and also maintaining the feasibility of future harvest entries in the 

remaining old growth portions of the unit. The uneven-aged group selection regeneration method is being prescribed for the 

unit or portions of the unit as a means to maintain large amounts of diverse structure to benefit wildlife over the long term. 

The legacy standard and guide applies in VCU 5790 which is in the eastern 2/3 of the unit. Because the unit is planned for 

uneven-aged management and is less than 20 acres, no legacy set-aside is required.

 TIMBER/LOGGING:

This unit is planned for shovel yarding yarding to the proposed temporary road.

 ENGINEERING/ROADS:

Unit is accessed by a proposed temporary road, totaling 200 feet, as displayed on the unit card.

 BOTANY:

No Concerns

 FISHERIES:

Unit

Number 82 Alternatives 2, 3, 4, 5

Summary of Concerns, Responses, BMPs and Mitigation

 INVASIVE SPECIES:

No Concerns
Unit 82

Streams are tributaries to Thorne River. 

Stream#: 1 Class: I, II, III Flagging: B/W, O/W C- Type: MMS, MCS, HCM

Concerns: active erosion

Buffer (RMA): Class I for MMS greater of 120 feet, flood plain, riparian vegetation or soils, or riparian associated wetland 

fens. Class I and II for HCM and MCS greater of 100 feet or to the top of the side-slope break. Class III for HCM to the top of 

the side-slope break.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): Will be identified by IDT during layout.

Protection: Category A and B 

Stream#: 1.10R Class: II Flagging: B/W C- Type: HCO

Concerns: blowdown

Buffer (RMA): Class II for HCO greater of 100 feet or to the top of the side-slope break.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): Will be identified by IDT during layout.

Protection: Category A 

Stream#: 1.11R Class: I, IV Flagging: B/W, G/W C- Type: MMO

Concerns: none

Buffer (RMA): Class I for MMO greater of 120 feet or floodplain, riparian vegetation or soils, or riparian associated wetland 

fens.

Class IV for HCO none.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed

Protection: Category A and C 

All other streams in unit: Class: IV Flagging: G/W C- Type: HC

Buffer (RMA): none Buffer (RAW): no review needed

Protection: Category C 

Temporary roads for Unit 82: All Alternatives -- No known stream crossings. The temporary roads have not been field 

verified and will be surveyed before implementation. If any stream crossings are found, crossings structures and locations 

will be approved by USFS, in consultation with fisheries biologist or hydrologist, prior to construction (BMP 14.17). During 

construction of temporary roads implement BMPs 12. 17, 13.10, 13.11, 13.16, 14.3, and 14.5.

 GEOLOGY/KARST:

No Concerns

 HERITAGE RESOURCES:

This unit was investigated per the third amended interagency Programmatic Agreement (PA) for historic properties. As 

specified by the PA, any potential adverse effect on historic properties (if any) was mitigated and portions of the Area of 

Potential Effect will be monitored by a qualified heritage specialist during and/or after actual ground disturbance.

 SCENERY:

The Scenic Integrity Objective (SIO) for this unit is Very Low . It is mostly in Modified Landscape LUD and is considered Not 

Seen. There are no scenery resource concerns.

 RECREATION:

No concerns

 SOILS/WETLANDS:

The unit has slopes averaging 5% to 70%. The lower part of the unit is dominantly forested wetland in the southern half. The 

upper part of the unit contains about 40% forested wetland. The soils and wetlands are suitable for shovel yarding. Shovel 

yarding should follow BMPs 12.5, 13.2 and 13.9. Slopes over 25% gradient may not be suitable for shovel yarding under 

some soil moisture conditions. Use care when approving shovel yarding on slopes over 25% gradient. Avoid track slippage 

and rutting.

The temporary road will impact less than 1/4 acre of forested wetlands (BMP 12.5, 13.2). Wetland avoidance was not 

practicable due to the abundance of forested wetland. Provide adequate cross drainage, remove structures, and close the 

road after harvest (BMP 14.9) (33 CFR BMPs 4, 5, 6).

 WILDLIFE:

Unit includes average snow deer winter range (entire unit), some of which is also deep snow marten winter habitat/deer 

winter range (western 2/3 of unit). Legacy standard and guideline applies to VCU 5790; however, there are no requirements 

for this unit because it is less than 20 acres. 
Unit 82

Alternative 4: Prescription is group selection with 33% removal by area to minimize impacts to wolves and connectivity 

between areas of past harvst, and maintain other habitat values.
3015255

3015000

3015250

3015105

3015107

1.10R.1R

1.11L

1.7R.1L

1. 11L .1L

1.9L

1

1.13L

1.8L

1.7R.1L.3L

1

1.7R

1.7R.2L

1.11L.1R

7R.1L.1L

1.9R

1

1 7. R.3L

1.10R.1R

1.7R.1L

1.10L

1.12L

1 1. 1 L.1L.1R

1.10L.1L

1.11L.1L.1L

1.10R.1L

1.7R.1L.2L

1.10R

1. 1 0R.1R.1L

1.10L

1.11L.1L.2L

1.12R

1.10R

1. 11 R

1.14L 1990

1990

1988

1990

1990

79

80

81

82

82

84

83

78

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 082 Alternative 2 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Partial Cut

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

578,579

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt2.mxd 14 July 2012

RR

SR
3015255

3015000

3015250

3015105

3015107

1.7R.1L.3L

1.11L

1.7R.1L

1. 11L .1L

1.9L

1

1.13L

1.8L

1

1.7R

1.7R.2L

1.11L.1R

7R.1L.1L

1.9R

1

1 7. R.3L

1.10R.1R

1.7R.1L

1.10L

1.12L

1 1. 1 L.1L.1R

1.10L.1L

1.11L.1L.1L

1.10R.1L

1.7R.1L.2L

1.10R

1. 1 0R.1R.1L

1.10L

1.11L.1L.2L

1.12R

1.10R

1. 11 R

1.14L

1.10R.1R

1990

1988

1990

1990

1990

79

80

81

82

83

84

78

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 082 Alternative 3 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

578,579

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt3.mxd 14 July 2012

RR

SR
3015000

3015250

3015105

3015255

1.7R.1L.3L

1.10R.1R

1.11L

1.7R.1L

1. 11L .1L

1.9L

1.13L

1

1.8L

1

1.7R

1.7R.2L

1.11L.1R

7R.1L.1L

1.9R

1

1 7. R.3L

1.10R.1R

1.7R.1L

1.10L

1.12L

1.14L

1.10L.1L

1.11L.1L.1L

1.10R.1L

1.7R.1L.2L

1.10R

1. 1 0R.1R.1L

1.10L

1.11L.1L.2L

1.12R

1.10R

1. 11 R

1 1. 1 L.1L.1R 1990

1990

1990

1988

1990

80

81

82

82

83

79

84

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 082 Alternative 4 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

578,579

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt4.mxd 20 March 2012

RR

SR
3015250

3015105

3015255

3015000

1

1.11L

1.7R.1L

1. 11L .1L

1.9L

1

1.13L

1.8L

1.7R.1L.3L

1.7R

1.7R.2L

1.11L.1R

7R.1L.1L

1.9R

1

1 7. R.3L

1.10R.1R

1.7R.1L

1.10L

1.12L

1.14L

1.10L.1L

1.11L.1L.1L

1.10R.1L

1.7R.1L.2L

1.10R

1. 1 0R.1R.1L

1.10L

1.11L.1L.2L

1.12R

1.10R

1. 11 R

1 1. 1 L.1L.1R

1.10R.1R

1990

1990

1990

1988

1990

81

82

82

83

84

80

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 082 Alternative 5 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Sytematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

578,579

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt5.mxd 14 July 2012

RR

SR
Unit 83

Total Unit

Acres:

31.0 Prescription: 2, 3, 4, 5 - 

Clearcut

4 - 33% Removal

VCU

Number:

578,

 579

Harvest

System:

Cable, Shovel

Net Harvest

Volume

(MBF):

2, 3, 5 - 

1,014

4 - 487

LUD:

Modified Landscape, 

Timber Production

 SILVICULTURE:

Existing Condition: Unit 83 has predominantly old-growth stand structure. The overstory consists of western hemlock and 

western redcedar with widely scattered Sitka spruce. Defect is highest within the larger western redcedar and western 

hemlock however, many quality stems in the upper diameter classes of both species are present. Windthrow risk is 

moderate. All adjacent previous harvest areas have met green-up with regeneration over 5 foot tall and meet NFMA 

requirements for no longer being considered openings.

Silvicultural Objective/Desired Condition: The desired condition for this stand is a highly productive, healthy, windfirm stand 

grown for timber management that retains residual trees as needed to meet standards and guides or other objectives. 

Silvicultural Prescription: Even-age Management -Clearcut (Alternatives 2, 3, 5, and Alternative 4 Shovel Settings)

This stand is being recommended for harvest at this time because it is not expected to obtain the desired condition given the 

current growth trajectory. This stand is over-mature with moderate to high stem decay and defect resulting in a situation 

where stand growth is being offset or exceeded by decay. Even-aged clear cutting is being prescribed to preclude or 

minimize the risk of windthrow after harvest, promote natural regeneration by opening up the canopy, and minimize defect 

and disease in the future stand to the maximum extent possible. 

The legacy standard and guide applies in VCU 5790 which is the majority of the unit other than the very southwestern tip. 

This requires that 30% of the portion of the unit in VCU 5790 or 13 acres of this area be retained in productive old growth 

representative of the overall composition of the planned harvest area. This retention is to be maintained indefinitely and must 

be within VCU 5790. The combination of units 80, 81, 82 and 83 create a situation where the maximum opening size allowed 

under NFMA could be exceeded. The required legacy structure is to be placed to keep the potential opening under 100 acres 

while also reducing the need for additional road, promoting additional buffer along RMAs and allowing for larger blocks of 

POG to be maintained. Legacy also divides the unit opening in two, at a natural setting break. Mapped legacy totals 

approximately 14 acres. Adjustments to the planned unit and legacy placement during implementation are allowed as long 

as the final configuration meets these objectives and maintains the appropriate acreage and stand characteristics.

Silvicultural Prescription: Uneven-age Management Group Selection (Alternative 4 Cable Settings)

Harvest up to 33% of the planned setting acreage in groups of trees up to two acres in size. Group selections should be well 

distributed across the stand. Locate groups to address insect and disease issues or capitalize on existing advanced 

regeneration of desirable tree species where possible. Locate group selections to maintain wildlife travel ways and important 

habitat while maximizing the economics of this entry and also maintaining the feasibility of future harvest entries in the 

remaining old growth portions of the unit. Groups may need to occur in strips in the downhill yarding portions of the unit to 

allow operation feasibility. The uneven-aged group selection regeneration method is being prescribed for the unit or portions 

of the unit as a means to maintain large amounts of diverse structure to benefit wildlife in perpetuity. No legacy set-aside is 

required

 TIMBER/LOGGING:

This unit is planned for a combination of cable and shovel yarding. Shovel settings are planned for yarding to the existing 

NFS road 3015000. Cable settings are planned for uphill and downhill yarding to the existing NFS road 3015105.

 ENGINEERING/ROADS:

No proposed road construction.

 BOTANY:

No Concerns

Unit

Number 83 Alternatives 2, 3, 4, 5

Summary of Concerns, Responses, BMPs and Mitigation

 INVASIVE SPECIES:

No Concerns
Unit 83

 FISHERIES:

Streams are tributaries to Thorne River. 

Stream#: 1 Class: I, II, III Flagging: B/W, O/W C- Type: MMS, HCM

Concerns: none

Buffer (RMA): Class I for MMS greater of 120 feet, flood plain, riparian vegetation or soils, or riparian associated wetland 

fens. Class II for HCM greater of 100 feet or to the top of the side-slope break. Class III for HCM to the top of the side-slope 

break.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): Will be identified by IDT during layout.

Protection: Category A and B 

Stream#: 1.11L Class: I, II Flagging: B/W C- Type: MMS, HCL, HCO

Concerns: none

Buffer (RMA): Class I for MMS greater of 120 feet, flood plain, riparian vegetation or soils, or riparian associated wetland 

fens. Class II for HCL and HCO greater of 100 feet or to the top of the side-slope break.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): Will be identified by IDT during layout.

Protection: Category A 

Stream#: 1.11L.1L Class: I Flagging: B/W C- Type: MMS, MMO

Concerns: blowdown

Buffer (RMA): Class I for MMS and MMO greater of 120 feet, flood plain, riparian vegetation or soils, or riparian associated 

wetland fens. 

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed

Protection: Category A 

Stream#: 1.11L.1R Class: I Flagging: B/W C- Type: MMO

Concerns: none

Buffer (RMA): Class I for MMO greater of 120 feet, flood plain, riparian vegetation or soils, or riparian associated wetland 

fens. 

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed

Protection: Category A

All other streams in unit: Class: IV Flagging: G/W C- Type: HC

Buffer (RMA): none Buffer (RAW): no review needed

Protection: Category C

 GEOLOGY/KARST:

No Concerns

 HERITAGE RESOURCES:

This unit was investigated per the third amended interagency Programmatic Agreement (PA) for historic properties. As 

specified by the PA, any potential adverse effect on historic properties (if any) was mitigated and portions of the Area of 

Potential Effect will be monitored by a qualified heritage specialist during and/or after actual ground disturbance.

 SCENERY:

The Scenic Integrity Objectives (SIO) of this unit are Low and Very Low, with the Low SIO covering about 29 acres. The unit 

is mostly in Middleground distance zone and Modified Landscape LUD. The Low SIO area is more than 2 miles from the 

Thorne Bay-Control Lake highway and the Thorne River, which are Visual Priority Travel Routes. No concerns.

 RECREATION:

No concerns

 SOILS/WETLANDS:

The unit has slopes between 15% to 70%. The steep slopes are located below the 3015105 road. These steep slopes are 

suitable for harvest with a minimum of partial suspension. The unit contains about 40% forested wetlands. The soils and 

wetlands are suitable for partial suspension cable yarding or shovel yarding. Shovel yarding will only occur in the western 

polygon near the 3015000 road. All logging systems should follow BMPs 12.5, 13.2 and 13.9. Slopes over 25% gradient may 

not be suitable for shovel yarding under some soil moisture conditions. Use care when approving shovel yarding on slopes 

over 25% gradient. Avoid track slippage and rutting.

 WILDLIFE:
Unit 83

Unit includes average snow deer winter range (eastern lobe of unit, east of road). Legacy standard and guideline applies to 

VCU 5790; Legacy acres do not coincide with deer winter range. Eastern portion of northern boundary of unit is adjacent to 

small OGR.

Alternative 4: Prescriptions include group selection with 33% area removal to maintain connectivity between areas of past 

harvest and other habitat values. No Legacy acres required because adequate structure retained in unit under uneven-aged 

harvest prescription (i.e., no openings larger than 20 acres), but a portion of the unit is deferred to maintain some 

unharvested old growth. Eastern portion of northern border of unit is adjacent to small OGR.
3015255

3015250

3015255

3015000

3015105

3015107

1

1.10R

1. 11 R

1.11L.1L.1R

2

1.10L.1L

1.11L

1.11L. 1 L

1.10R.1R

1 7R.1L

1.11L.1R

1

1.10R.1R

1.10L

1.12L

1.13L

1.14L

1.11L.1L.1L

1.10R.1L

1.10R

1. 1 0R.1R.1L

1.10L

1.11L.1L.2L

1.12R

2.5 L.5R.1R

1990

1995

1990

1990

1988

1990

1966

81

82

82

83

84

80

84

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 083 Alternative 2 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Partial Cut

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

578,579

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt2.mxd 14 July 2012

RR

SR
3015250

3015255

3015000

3015105

3015255

3015107

1.10R

1. 11 R

1.11L.1L.1R

2

1.11L

1.11L.1L.1L 1.1 1L.1L

1.10R.1R

1 7R.1L

1.11L.1R

1

1.10R.1R

1.10L

1.12L

1.13L

1.10L.1L

1.14L

1.10R.1L

1.10R

1. 1 0R.1R.1L

1.10L

1.11L.1L.2L

1.12R

2.5 L.5R.1R

1

1990

1995

1990

1990

1988

1990

1966

81

82

83

84

424

80

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 083 Alternative 3 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

578,579

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt3.mxd 14 July 2012

RR

SR
3015105

3015255

3015250

3015255

3015000

1

1.10R

1.14L

1.11L.1L.1R

2

1.10L.1L

1.11L

1.11L. 1 L

1.10R.1R

1 7R.1L

1.11L.1R

1

1.10R.1R

1.10L

1.12L

1.13L

1. 11 R

1.11L.1L.1L

1.10R.1L

1.10R

1. 1 0R.1R.1L

1.10L

1.11L.1L.2L

1.12R

2.5 L.5R.1R

1990

1995

1990

1966

1988

1990

1990

81

82

82

83

80

84

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 083 Alternative 4 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

578,579

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt4.mxd 20 March 2012

RR

SR
3015000

3015105

3015255

3015250

3015255

2.5 L.5R.1R

1

1.10R

1.14L

1.11L.1L.1R

1.10L.1L

2

1.11L

1.11L. 1 L

1.10R.1R

1 7R.1L

1.11L.1R

1

1.10R.1R

1.10L

1.12L

1.13L

1. 11 R

1.11L.1L.1L

1.10R.1L

1.10R

1. 1 0R.1R.1L

1.10L

1.11L.1L.2L

1.12R

1990

1995

1990

1966

1990

1988

1990

81

82

82

83

84

80

84

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 083 Alternative 5 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Sytematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

578,579

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt5.mxd 14 July 2012

RR

SR
Unit 84

Total Unit

Acres:

2, 3, 5 - 21.8

4 - 18.7

Prescription: 2, 3, 5 - Clearcut

4 - 33% Removal

VCU

Number:

578,

 579

Harvest

System:

Shovel

Net Harvest

Volume

(MBF):

2, 3, 5 - 445

4 - 126 LUD:

Modified Landscape, 

Timber Production

 SILVICULTURE:

Existing Condition: This unit has old-growth stand structure. The overstory consists primarily of a western hemlock and 

western redcedar mixture. In the larger trees damages and defects are high. In general, the western hemlock have 

moderate to heavy heartwood and stem decay, with mistletoe infection light to moderate. Windthrow risk is moderate. All 

adjacent previous harvest areas have met green-up with regeneration over 5 foot tall and meet NFMA requirements for no 

longer being considered openings.

Silvicultural Objective/Desired Condition: The desired condition for this stand is a highly productive, healthy, windfirm stand 

grown for timber management that retains residual trees as needed to meet standards and guides or other objectives. 

Silvicultural Prescription: Even-age Management (Alternatives 2, 3, 5)

This stand is being recommended for harvest at this time because it is not expected to obtain the desired condition given the 

current growth trajectory. This stand is mature to over-mature with moderate stem decay and defect resulting in a situation 

where stand growth is being offset or exceeded by decay. Even-aged clear cutting is being prescribed to preclude or 

minimize the risk of windthrow after harvest, promote natural regeneration by opening up the canopy, and minimize defect 

and disease in the future stand to the maximum extent possible. A portion of this unit along the 3015 road in the northeast 

corner of the unit is in VCU 579. 

VCU 579 equires the Legacy standard and guide be applied. Only the eastern edge of this unit is in VCU 579; this area 

however, is well less than 20 acres. Therefore, no legacy set-asides are required. 

Silvicultural Prescription: Uneven-age Management Group Selection (Alternative 4)

Harvest up to 33% of the planned setting acreage in groups of trees up to two acres in size. Group selections should be well 

distributed across the stand. Locate groups to address insect and disease issues or capitalize on existing advanced 

regeneration of desirable tree species where possible. Locate group selections to maintain wildlife travel ways and important 

habitat while maximizing the economics of this entry and also maintaining the feasibility of future harvest entries in the 

remaining old growth portions of the unit. The uneven-aged group selection regeneration method is being prescribed for the 

unit or portions of the unit as a means to maintain large amounts of diverse structure to benefit wildlife over the long term. 

VCU 579 equires the Legacy standard and guide be applied. Only the eastern edge of this unit is in VCU 579; this area 

however, is well less than 20 acres and the unit is uneven-aged management. Therefore, no legacy set-asides are required.

 TIMBER/LOGGING:

This unit is planned for shovel yarding to the proposed temporary road and existing NFS roads 3015000 & 3015250.

 ENGINEERING/ROADS:

Unit is accessed by a proposed temporary road, totaling 200 feet, as displayed on the unit card.

 BOTANY:

Two lesser round-leaved orchid (sensitive plant) populations were in unit (5 and 30 individuals) and deferred from unit 

because populations represent near northerly extent of known populations in this area. This unit indirectly affects these two 

populations, which are located in the unharvested areas adjacent to the unit. In Alternatives 2, 3, and 5, this unit may 

indirectly affect one population of Alaska rein orchid (sensitive plant) located north of the unit.

 FISHERIES:

Unit

Number 84 Alternatives 2, 3, 4, 5

Summary of Concerns, Responses, BMPs and Mitigation

 INVASIVE SPECIES:

No Concerns
Unit 84

Streams are tributaries to Thorne River. 

Stream#: 1 Class: I Flagging: B/W C- Type: MCS

Concerns: none

Buffer (RMA): Class I for MCS greater of 100 feet, flood plain, riparian vegetation or soils, or riparian associated wetland 

fens. 

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed

Protection: Category A

Stream#: 1.10L Class: I, IV Flagging: B/W, G/W C- Type: MMO

Concerns: none

Buffer (RMA): Class I for MMO greater of 120 feet, flood plain, riparian vegetation or soils, or riparian associated wetland 

fens. Class IV for MMO none.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed

Protection: Category A and C 

Stream#: 1.11L.1R Class: I Flagging: B/W, G/W C- Type: MMO

Concerns: blowdown

Buffer (RMA): Class I for MMO greater of 120 feet, flood plain, riparian vegetation or soils, or riparian associated wetland 

fens. Class IV for MMO none

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed

Protection: Category A and C

Stream#: 1.11L Class: I, II Flagging: B/W C- Type: MMS, HCL, HCO

Concerns: none

Buffer (RMA): Class I for MMS greater of 120 feet, flood plain, riparian vegetation or soils, or riparian associated wetland 

fens. Class II for HCL and HCO greater of 100 feet or to the top of the side-slope break.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): Will be identified by IDT during layout.

Protection: Category A 

Stream#: 1.11L.1L Class: I Flagging: B/W C- Type: MMS, MMO

Concerns: blowdown

Buffer (RMA): Class I for MMS and MMO greater of 120 feet, flood plain, riparian vegetation or soils, or riparian associated 

wetland fens. 

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed.

Protection: Category A 

Stream#: 1.11L.1L.1R Class: I, II, IV Flagging: B/W, G/W C- Type: MMO

Concerns: none

Buffer (RMA): Class I and II for MMO greater of 120 feet, flood plain, riparian vegetation or soils, or riparian associated 

wetland fens. Class IV for MMO none.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed

Protection: Category A and C 

All other streams in unit: Class: IV Flagging: G/W C- Type: HC or MM

Buffer (RMA): none Buffer (RAW): no review needed.

Protection: Category C 

Temporary roads for Unit 84: All Alternatives -- No known stream crossings. The temporary roads have not been field 

verified and will be surveyed before implementation. If any stream crossings are found, crossings structures and locations 

will be approved by USFS, in consultation with fisheries biologist or hydrologist, prior to construction (BMP 14.17). During 

construction of temporary roads implement BMPs 12.17, 13.10, 13.11, 13.16, 14.3, and 14.5.

 GEOLOGY/KARST:

No Concerns

 HERITAGE RESOURCES:

This unit was investigated per the third amended interagency Programmatic Agreement (PA) for historic properties. As 

specified by the PA, any potential adverse effect on historic properties (if any) was mitigated and portions of the Area of 

Potential Effect will be monitored by a qualified heritage specialist during and/or after actual ground disturbance.

 SCENERY:

The Scenic Integrity Objective (SIO) for this unit is Very Low . It is almost entirely in Timber Production LUD and is 

considered Not Seen. There are no scenery resource concerns.
Unit 84

 RECREATION:

No concerns

 SOILS/WETLANDS:

The unit has slopes averaging 5 to 25%. An area with dominant wetlands and numerous drainages has been removed from 

the unit. The soils and wetlands in the remaining unit are suitable for shovel yarding. Shovel yarding should follow BMPs 

12.5, 13.2 and 13.9. Specifically, the shovel operator should avoid the small non-forested areas of the unit to prevent rutting. 

Slopes over 25% gradient may not be suitable for shovel yarding under some soil moisture conditions. Use care when 

approving shovel yarding on slopes over 25% gradient. Avoid track slippage and rutting.

A temporary road will impact about 0.5 acres of forested wetland within the unit and about 0.2 acres outside of the unit.. 

Construction of temporary roads are required for access, no other roads are located in close enough proximity (BMP 12.5, 

13.2). Wetland avoidance was not practicable due to the abundance of forested wetland. Provide adequate cross drainage, 

remove structures, and close the road after harvest (BMP 14.9) (33 CFR BMPs 4, 5, 6). Provide adequate cross drainage, 

remove structures, and close the road after harvest (BMP 14.9) (33 CFR BMPs 4,5, 6).

Alternatives 2, 3 and 5: There are approximately 4 acres (19% of the unit) of forested wetland near the northwest unit 

boundary (BMP 12.5). 

Alternative 4:

There are approximately 4 acres (22% of the unit) of forested wetland near the northwest unit boundary (BMP 12.5).

 WILDLIFE:

Unit includes average snow deer winter range (entire unit), most of which is also deep snow marten winter habitat/deer winter 

range (all except northern lobe of unit). Legacy standard and guideline applies to VCU 5790; but no Legacy acres are 

required because portion of unit in this VCU is less than 20 acres.

Alternative 4: Setting breaks used to avoid sensitive plant populations between the northern and southern settings. 

Prescription is small group selection with 33% basal area removal to minimize impacts to wolves and connectivity between 

areas of past harvest, and maintain other habitat values.

Old-growth Reserve (OGR) Boundary

Alternatives 2, 3, and 5: Unit is not adjacent to OGR.

Alterative 4: Adopts Interagency OGR which is adjacent to northern boundary of unit.
3015105

3015255

3015250

3015000

3015107

2

2.5L.3R

2.5L.5R.1R

2. 5L.4R.1L

1.10R.1R

2.5L.4R

2.5L.1R.2L

1.11L

1.11L. 1 L

2.5L. 5R.1 R

5L.1R

2.5L.5R.1R

1.11L.1R

5L. 5R.1R

1

2.5L.1R

1.10R.1R

1.10L

1.12L

2.5L.1R.3L

1.13L

1

1.10L.1L

1.11L.1L.1L

1.10R.1L

1.10R

1. 1 0R.1R.1L

1.10L

1.11L.1L.2L

1.12R

1.14L

1.10R

1. 11 R

1.11 L.1L.1R

1990

1988

1990

1988

1990

1990

78

80

81

82

82

84

84

83

77

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 084 Alternative 2 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Partial Cut

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

578,579

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt2.mxd 14 July 2012

RR

SR
3015255

3015250

3015000

3015105

3015107

2.5L.3R

2.5L.5R.1R

2. 5L.4R.1L

1.10R.1R

2.5L.4R

1.11L

1.10L.1L

1.1 1L.1L

2.5L. 5R.1 R

5L.1R

2.5L.5R.1R

1.11L.1R

5L. 5R.1R

1

2.5L.1R

1.10R.1R

1.10L

1.12L

2.5L.1R.3L

1.13L

2.5L.1R.2L

1

1.11L.1L.1L

1.10R.1L

1.10R

1. 1 0R.1R.1L

1.10L

1.11L.1L.2L

1.12R

1.14L

1.10R

1. 11 R

1.11 L.1L.1R

2

1988

1988

1990

1990

1990

1990

78

80

81

82

83

424

84

77

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 084 Alternative 3 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

578,579

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt3.mxd 14 July 2012

RR

SR
3015000

3015105

3015255

3015250

2.5L.3R

2.5L.5R.1R

2. 5L.4R.1L

1.10R.1R

2.5L.4R

1.11L

1.10L.1L

1.11L. 1 L

2.5L. 5R.1 R

5L.1R

2.5L.5R.1R

1.11L.1R

5L. 5R.1R

1

2.5L.1R

1.10R.1R

1.10L

1.12L

2.5L.1R.3L

1.13L

2.5L.1R.2L

2

1.11L.1L.1L

1.10R.1L

1.10R

1. 1 0R.1R.1L

1.10L

1.11L.1L.2L

1.12R

1.14L

1.10R

1. 11 R

1.11 L.1L.1R

1

1990

1988

1990

1990

1988

1990

80

81

82

82

83

77

84

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 084 Alternative 4 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

578,579

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt4.mxd 20 March 2012

RR

SR
3015250

3015000

3015105

3015255

1

2.5L.3R

2.5L.5R.1R

2. 5L.4R.1L

1.10R.1R

2.5L.4R

2.5L.1R.2L

1.11L

1.11L. 1 L

2.5L. 5R.1 R

5L.1R

2.5L.5R.1R

1.11L.1R

5L. 5R.1R

1

2.5L.1R

1.10R.1R

1.10L

1.12L

2.5L.1R.3L

1.13L

2

1.10L.1L

1.11L.1L.1L

1.10R.1L

1.10R

1. 1 0R.1R.1L

1.10L

1.11L.1L.2L

1.12R

1.14L

1.10R

1. 11 R

1.11 L.1L.1R

1988

1988

1990

1990

1990

1990

80

81

82

82

83

84

84

77

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 084 Alternative 5 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Sytematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

578,579

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt5.mxd 14 July 2012

RR

SR
Unit 87

Total Unit

Acres:

2, 3, 5 - 13.3 Prescription: Clearcut

VCU

Number:

578 Harvest

System:

Shovel, 

Helicopter

Net Harvest

Volume

(MBF):

2, 3, 5 - 324

LUD:

Timber Production

 SILVICULTURE:

Existing Condition: This unit has old-growth stand structure. The main damages affecting tree health and volume loss are 

heartwood / stem decay, bole cracks and checks. Mistletoe is heavy across the stand. Numerous spike tops and sucker 

limbs are present in the western redcedar overstory trees. The average defect rating for the unit is moderate to high. 

Windthrow risk is moderate. All adjacent previous harvest areas have met green-up with regeneration over 5 feet tall and 

meet NFMA requirements for no longer being considered openings.

Silvicultural Objective/Desired Condition: The desired condition for this stand is a highly productive, healthy, windfirm stand 

grown for timber management that retains residual trees as needed to meet standards and guides or other objectives. 

Silvicultural Prescription: Even-age Management- Clearcut

This stand is being recommended for harvest at this time because it is not expected to obtain the desired condition given the 

current growth trajectory. This stand is over-mature with moderate to high stem decay and defect resulting in a situation 

where stand growth is being offset or exceeded by decay. Even-aged clear cutting is being prescribed to preclude or 

minimize the risk of windthrow after harvest, promote natural regeneration by opening up the canopy, and minimize defect 

and disease in the future stand to the maximum extent possible.

 TIMBER/LOGGING:

Alternatives 2. 3: This unit is planned for shovel yarding to the proposed temporary road. 

Alternative 5: This unit is planned for helicopter yarding to a landing on existing NFS road 3015250.

 ENGINEERING/ROADS:

Unit is accessed by a proposed temporary road in Alternatives 2 and 3, totaling 3900 feet, as displayed on the unit card. 

Approximately 3100 feet of the road will be constructed across decommissioned road bed. The first 500 feet of the proposed 

temporary road is also used to access a proposed temporary road accessing Unit 77. Reconstruction of existing NFS roads 

3015200 and 3015230, totaling 11,100 feet, will be required to allow access in Alternatives 2 and 3. See associated road 

cards for details. These roads are also used to access Units 71-77.

Follow applicable BMP's during construction and layout. In particular adhere to the following BMP's: 14.2, 14.6, 14.7, 14.8, 

14.9, 14.10, 14.12, 14.18.

 BOTANY:

No Concerns

 FISHERIES:

No Streams found in unit at time of survey. If streams are found during implementations, a fish biologist will be notified and 

appropriate protections will be applied.

Temporary roads for Unit 87: Alternatives 2 and 3 -- No known stream crossings. The temporary roads have not been field 

verified and will be surveyed before implementation. If any stream crossings are found, crossings structures and locations 

will be approved by USFS, in consultation with fisheries biologist or hydrologist, prior to construction (BMP 14.17). During 

construction of temporary roads implement BMPs 12.17, 13.10, 13.11, 13.16, 14.3, and 14.5.

 GEOLOGY/KARST:

No Concerns

 HERITAGE RESOURCES:

Unit

Number 87 Alternatives 2, 3, 5

Summary of Concerns, Responses, BMPs and Mitigation

 INVASIVE SPECIES:

No Concerns
Unit 87

This unit was investigated per the third amended interagency Programmatic Agreement (PA) for historic properties. As 

specified by the PA, any potential adverse effect on historic properties (if any) was mitigated and portions of the Area of 

Potential Effect will be monitored by a qualified heritage specialist during and/or after actual ground disturbance.

 SCENERY:

The Scenic Integrity Objective (SIO) for this unit is Very Low . It is in Timber Production LUD and is considered Not Seen. 

Originally northwest corner of unit was in Scenic River LUD (1 acre). This small portion was deferred as mitigation. There 

are no scenery resource concerns.

 RECREATION:

No concerns

 SOILS/WETLANDS:

Alternatives 2, 3, and 5:

Slopes are less than 15%. The soils and wetlands are suitable for shovel yarding. The soils and wetlands are suitable for 

shovel yarding. Shovel yarding should follow BMPs 12.5, 13.2 and 13.9. Specifically, the shovel operator should avoid the 

small non-forested areas of the unit to prevent rutting. Use care when approving shovel yarding on slopes. Avoid track 

slippage and rutting.

There are approximately 4 acres (32% of the unit) of forested wetland in the northeastern third of the unit (BMP 12.5). The 

temporary road would not cross any wetlands.

Alternative 5:

A minimum of partial suspension would meet soil and wetland resource concerns (BMPs 12.5, 13.5, and 13.9)

 WILDLIFE:

Unit includes average snow deer winter range (almost entire unit). Unit is adjacent to Honker large OGR complex. Legacy 

standard and guideline does not apply in this VCU.

Alternative 4: Unit dropped because location coincides with the biologically preferred small OGR.
SR

3015230

2. 5L

2.5L

2.5L.1L

2.5L

1989

2001

1989

77

87

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 087 Alternative 2 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Partial Cut

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

578

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt2.mxd 14 July 2012

RR

SR
SR

3015230

2. 5L

2.5L

2.5L.1L

2.5L

1989

2001

1989

77

87

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 087 Alternative 3 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

578

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt3.mxd 14 July 2012

RR

SR
SR

3015230

2. 5L

2.5L

2.5L.1L

2.5L

1989

2001

1989

77

87

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 087 Alternative 5 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Sytematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

578

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt5.mxd 14 July 2012

RR

SR
Unit 88

Total Unit

Acres:

2, 3, 5 - 18.9

4 - 13.1

Prescription: 2, 3, 5 - Clearcut

4 - 33% Removal

VCU

Number:

578,

579,

 580

Harvest

System:

Shovel

Net Harvest

Volume

(MBF):

2, 3, 5 - 496

4 - 113 LUD:

Modified Landscape, 

Timber Production

 SILVICULTURE:

Existing Condition: This unit has old-growth stand structure. The overstory consists primarily of a western hemlock and 

western redcedar mixture. The larger western redcedar in the southern end of the unit are mostly dead or cull. The smaller 

diameter western hemlock and western redcedar have moderate defect and damages. Mistletoe is light to moderate, while 

stem decay is high in larger trees and moderate in all others. Windthrow risk is moderate. A past harvest area is adjacent to 

the unit along the eastern boundary. This past harvest has met green-up with regeneration over 5' tall and meets NFMA 

requirements for no longer being considered an opening.

Silvicultural Objective/Desired Condition: The desired condition for this stand is a highly productive, healthy, windfirm stand 

grown for timber management that retains residual trees as needed to meet standards and guides or other objectives. 

Silvicultural Prescription: Even-age Management -Clearcut (Alternatives 2,3,5)

This stand is being recommended for harvest at this time because it is not expected to obtain the desired condition given the 

current growth trajectory. This stand is over-mature with moderate to high stem decay and defect resulting in a situation 

where stand growth is being offset or exceeded by decay. Even-aged clear cutting is being prescribed to preclude or 

minimize the risk of windthrow after harvest, promote natural regeneration by opening up the canopy, and minimize defect 

and disease in the future stand to the maximum extent possible. 

A portion of the unit is in VCU 5790 which requires legacy. The unit is however less than 20 acres therefore no legacy setaside is required.

Silvicultural Prescription: Uneven-age Management Group Selection (Alternative 4)

Harvest up to 33% of the planned setting acreage in groups of trees up to two acres in size. Group selections should be well 

distributed across the stand. Locate groups to address insect and disease issues or capitalize on existing advanced 

regeneration of desirable tree species where possible. Locate group selections to maintain wildlife travel ways and important 

habitat while maximizing the economics of this entry and also maintaining the feasibility of future harvest entries in the 

remaining old growth portions of the unit. The uneven-aged group selection regeneration method is being prescribed for the 

unit or portions of the unit as a means to maintain large amounts of diverse structure to benefit wildlife in perpetuity. No 

legacy set-aside is required.

 TIMBER/LOGGING:

This unit is planned for shovel yarding to the proposed temporary road.

 ENGINEERING/ROADS:

Unit is accessed by a proposed temporary road in Alternatives 2, 3, and 5, totaling 2100 feet, as displayed on the unit card. 

Approximately 1000 feet of this road will be constructed across decommissioned road bed. Unit is accessed by a proposed 

temporary road in Alternative 4, totaling 1000 feet, as displayed on the unit card. This road will be entirely constructed across 

a decommissioned road bed.

Follow applicable BMP's during construction and layout. In particular adhere to the following BMP's: 14.2, 14.6, 14.7, 14.8, 

14.9, 14.10, 14.12, 14.18.

 BOTANY:

No Concerns

 FISHERIES:

Unit

Number 88 Alternatives 2, 3, 4, 5

Summary of Concerns, Responses, BMPs and Mitigation

 INVASIVE SPECIES:

No Concerns
Unit 88

Streams are tributaries to Thorne River.

Stream#: 1 Class: I, II, IV Flagging: B/W, G/W C- Type: PAB, HCO, MMO

Concerns: none

Buffer (RMA): Class I and II greater of 100 feet (PAB) or 120 feet (MMO), flood plain, riparian vegetation or soils, or riparian 

associated wetland fens. Class I and II for HCO greater of 100 feet or to the top of the side-slope break. Class IV for MMO 

none.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed

Protection: Category A, and C 

Stream#: 1.2R Class: I Flagging: B/W C- Type: MMO, PAB

Concerns: none

Buffer (RMA): Class I greater of 120 feet (MMO) or 100 feet (PAB), flood plain, riparian vegetation or soils, or riparian 

associated wetland fens. 

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed

Protection: Category A 

Stream#: 1.2R.1R Class: I, IV Flagging: B/W, G/W C- Type: MMO

Concerns: none

Buffer (RMA): Class I for MMO greater of 120 feet, flood plain, riparian vegetation or soils, or riparian associated wetland 

fens. Class IV for MMO none.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed

Protection: Category A and C 

Stream#: 1.2R.2R Class: I, IV Flagging: B/W, G/W C- Type: MMO

Concerns: none

Buffer (RMA): Class I for MMO greater of 120 feet, flood plain, riparian vegetation or soils, or riparian associated wetland 

fens. Class IV MMO none

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed

Protection: Category A and C 

All other streams in unit: Class: IV Flagging: G/W C- Type: HC or MM

Buffer (RMA): none Buffer (RAW): no review needed.

Protection: Category C 

Temporary roads (new and reopened decommissioned) for Unit 88: Alternatives 2, 3, and 5 -- One Class IV stream 

crossing. Alternative 4-- No known stream crossings on reopened decommissioned road. The temporary roads have not 

been field verified and will be surveyed before implementation. Decommissioned temporary road 3015000_4_29L would be 

reopened and the new temporary road would extend beyond it. Crossings structures and locations will be approved by 

USFS, in consultation with fisheries biologist or hydrologist, prior to construction (BMP 14.17). During construction of 

temporary roads implement BMPs 12.17, 13.10, 13.11, 13.16, 14.3, and 14.5.

 GEOLOGY/KARST:

No Concerns

 HERITAGE RESOURCES:

This unit was investigated per the third amended interagency Programmatic Agreement (PA) for historic properties. As 

specified by the PA, any potential adverse effect on historic properties (if any) was mitigated and portions of the Area of 

Potential Effect will be monitored by a qualified heritage specialist during and/or after actual ground disturbance.

 SCENERY:

The Scenic Integrity Objective (SIO) for this unit is Very Low . It is in Timber Production and Modified Landscape LUDs and 

is considered Not Seen. There are no scenery resource concerns.

 RECREATION:

No concerns

 SOILS/WETLANDS:

Slopes in this unit are very gentle at 5%. Forested wetlands are dominant. The soils and wetlands are suitable for shovel 

yarding. Shovel yarding should follow BMPs 12.5, 13.2 and 13.9. Specifically, the shovel operator should avoid the small nonforested areas of the unit to prevent rutting. Use care when approving shovel yarding on slopes. Avoid track slippage and 

rutting.

Alternatives 2, 3, and 5: 
Unit 88

A temporary road will impact 1 acre of forested wetland within the unit. Construction of temporary roads are required for 

access, no existing roads are located in close enough proximity. Wetland avoidance was not feasible because they cover 

nearly the entire unit (BMP 12.5, 13.2). Provide adequate cross drainage, remove structures, and close the road after harvest 

(BMP 14.9) (33 CFR BMPs 4,5, 6).

 WILDLIFE:

Unit includes average snow deer winter range (almost entire unit). Unit is near Honker large OGR complex. Legacy standard 

and guideline applies to VCU 5790, however there are no requirements because portion of unit in this VCU is less than 20 

acres.

Alternative 4: Northern portion of unit dropped to minimize road building. Prescription is group selection with 33% removal by 

area to minimize impacts to wolves and connectivity between areas of past harvest, and maintain other habitat values. No 

Legacy acres required because unit is less than 20 acres and uneven-aged management is prescribed.
SR

3015000

1

A4A4.5L.1R .5L

1.2R

1.2R.1R.1R

1

2.5L.9R

1.2R.2 R

1.2R

2.5 L

A4.1R

1

1.2R .1 R

A4

1974

1974

1974

2001

88

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 088 Alternative 2 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Partial Cut

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

578,579,580

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt2.mxd 14 July 2012

RR

SR
SR

3015000

1

A4A4.5L.1R .5L

1.2R

1.2R.1R.1R

1

2.5L.9R

1.2R.2 R

1.2R

2.5 L

A4.1R

1

1.2R .1 R

A4

1974

1974

1974

2001

88

395

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 088 Alternative 3 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

578,579,580

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt3.mxd 14 July 2012

RR

SR
SR

3015000

1

A4A4.5L.1R .5L

1.2R

1.2R.1R.1R

1

2.5L.9R

1.2R.2 R

1.2R

2.5 L

A4.1R

1

1.2R .1 R

A4

1974

1974

1974

2001

88

395

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 088 Alternative 4 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

578,579,580

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt4.mxd 20 March 2012

RR

SR
SR

3015000

1

A4A4.5L.1R .5L

1.2R

1.2R.1R.1R

1

2.5L.9R

1.2R.2 R

1.2R

2.5 L

A4.1R

1

1.2R .1 R

A4

1974

1974

1974

2001

88

395

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 088 Alternative 5 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Sytematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

578,579,580

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt5.mxd 14 July 2012

RR

SR
Unit 89

Total Unit

Acres:

11.2 Prescription: Clearcut

VCU

Number:

578,

 580

Harvest

System:

Shovel, 

Helicopter

Net Harvest

Volume

(MBF):

182

LUD:

Modified Landscape

 SILVICULTURE:

Existing Condition: This unit has generally old-growth stand structure with indications of uneven-age to two-aged stand 

structure resulting from past wind damage. Two distinct age class are present with a middle diameter overstory over a small 

diameter midstory. The dominant damage agents are heavy mistletoe and moderate heart/stem decay, especially in the 

larger western hemlock. Western redcedar has higher than average stem form deformity. Windthrow risk is moderate. All 

adjacent previous harvest areas have met green-up with regeneration over 5 foot tall and meet NFMA requirements for no 

longer being considered openings.

Silvicultural Objective/Desired Condition: The desired condition for this stand is a highly productive, healthy, windfirm stand 

grown for timber management that retains residual trees as needed to meet standards and guides or other objectives. 

Silvicultural Prescription: Even-age Management - Clearcut

This stand is being recommended for harvest at this time because it is not expected to obtain the desired condition given the 

current growth trajectory. This stand is mature to over-mature with moderate stem decay and defect resulting in a situation 

where stand growth is being offset or exceeded by decay. Even-aged clear cutting is being prescribed to preclude or 

minimize the risk of windthrow after harvest, promote natural regeneration by opening up the canopy, and minimize defect 

and disease in the future stand to the maximum extent possible.

 TIMBER/LOGGING:

This unit is planned for a combination of helicopter, and shovel yarding. Helicopter settings are planned for yarding to a 

landing on the existing NFS road 3016010. Shovel settings are planned for yarding to the existing NFS road 3016010.

 ENGINEERING/ROADS:

No proposed road construction.

 BOTANY:

No Concerns.

 FISHERIES:

Streams are tributaries to Thorne River.

Stream#: 1 Class: I, II, IV Flagging: B/W, O/W, G/W C- Type: FPS, HCO

Concerns: blowdown

Buffer (RMA): Class I for FPS greater of 130 feet, flood plain, riparian vegetation or soils, or riparian associated wetland 

fens. Class II for HCO greater of 100 feet or to the top of the side-slope break. Class IV for HCO none.

Alternatives: 2, 3, and 5 Buffer (RAW): no review needed

Protection: Category A and C 

Stream#: 1.5 Class: I, IV Flagging: B/W, G/W C- Type: MMO

Concerns: none

Buffer (RMA): Class I for MMO greater of 120 feet, flood plain, riparian vegetation or soils, or riparian associated wetland 

fens. Class IV for MMO none. 

Alternatives: 2, 3, and 5 Buffer (RAW): no review needed

Protection: Category A and C

Stream#: 2 Class: II, IV Flagging: B/W, G/W C- Type: HCM, HCO

Concerns: none

Buffer (RMA): Class II for HCM greater of 100 feet or to the top of the side-slope break. Class IV for MMO none. 

Unit

Number 89 Alternatives 2, 3, 5

Summary of Concerns, Responses, BMPs and Mitigation

 INVASIVE SPECIES:

No Concerns
Unit 89

Alternatives: 2, 3, and 5 Buffer (RAW): no review needed

Protection: Category A and C 

All other streams in unit: Class: IV Flagging: G/W C- Type: HC

Buffer (RMA): none Buffer (RAW): no review needed.

Protection: Category C

 GEOLOGY/KARST:

No Concerns

 HERITAGE RESOURCES:

This unit was investigated per the third amended interagency Programmatic Agreement (PA) for historic properties. As 

specified by the PA, any potential adverse effect on historic properties (if any) was mitigated and portions of the Area of 

Potential Effect will be monitored by a qualified heritage specialist during and/or after actual ground disturbance.

 SCENERY:

The Scenic Integrity Objective (SIO) for this unit is about half Low and half Very Low . It is entirely in Modified Landscape 

LUD and about 6 acres are in Middleground; the remainder is Not Seen. There are no scenery resource concerns.

 RECREATION:

No concerns

 SOILS/WETLANDS:

Slopes range from about 10 to 55%. Forested wetlands are intermittent in the unit. Slopes greater than 72% were excluded 

from harvest. About 4 acres of the original unit were excluded due to very high landslide potential, high colluvial activity, and 

extremely steep slopes. In the remainder of the unit, the soils and wetlands are suitable for a minimum partial suspension 

yarding or shovel yarding. All logging systems should follow BMPs 12.5, 13.2 and 13.9. Slopes over 25% gradient may not 

be suitable for shovel yarding under some soil moisture conditions. Use care when approving shovel yarding on slopes over 

25% gradient. Avoid track slippage and rutting.

An existing road will be used to access timber, thereby avoiding the construction of new roads.

 WILDLIFE:

Unit includes average snow deer winter range (nearly entire unit), all of which is also deep snow marten winter habitat/deer 

winter range. Unit is near Honker large OGR complex. Legacy standard and guideline does not apply in these VCUs.

Alternative 4: Unit dropped to maintain connectivity between two patches of young-growth.

Old-growth Reserve (OGR) Boundary

Alternatives 2 and 5: Current OGR boundary adjacent to southern border of unit. 

Alternative 3: OGR boundary moved to the north so unit only abuts OGR to the south. 

Alterative 4: Unit dropped; no change in OGR boundary in this location.
3016000

3016010

A1 1. L.

1

4

1

1.1R

3.1L

3

2.1R

1.5

2

31

1.1L

A1.1L

A1

2

A1

A1.2L

3

3.1R

1998

1977

1977

1977

1977

1992

89

90

90

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 089 Alternative 2 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Partial Cut

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

578,580

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt2.mxd 14 July 2012

RR

SR
3016000

3016010

A1 1. L.

1

4

1

1.1R

3.1L

3

2.1R

1.5

2

31

1.1L

A1.1L

A1

2

A1

A1.2L

3

3.1R

1998

1977

1977

1977

1977

1992

89

90

439

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 089 Alternative 3 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

578,580

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt3.mxd 14 July 2012

RR

SR
3016000

3016010

A1 1. L.

1

4

1

1.1R

3.1L

3

2.1R

1.5

2

31

1.1L

A1.1L

A1

2

A1

A1.2L

3

3.1R

1998

1977

1977

1977

1977

1992

89

90

90

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 089 Alternative 5 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Sytematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

578,580

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt5.mxd 14 July 2012

RR

SR
Unit 90

Total Unit

Acres:

32.8 Prescription: 2, 3, 5 - Clearcut

4 - 50% Removal

VCU

Number:

580 Harvest

System:

Helicopter

Net Harvest

Volume

(MBF):

2, 3, 5 - 865

4 - 432 LUD:

Modified Landscape, 

Timber Production

 SILVICULTURE:

Existing Condition: This unit has old-growth high elevation stand characteristics. The majority of the merchantable timber was 

free of mistletoe but had moderate to high heartwood and stem decay. The timber is over-mature with numerous dying or 

dead tops. Trees are widely spaced with frequent un-stocked openings. Windthrow risk is moderate. All adjacent previous 

harvest areas have met green-up with regeneration over 5 foot tall and meet NFMA requirements for no longer being 

considered openings.

Silvicultural Objective/Desired Condition: The desired condition for this stand is a highly productive, healthy, windfirm stand 

grown for timber management that retains residual trees as needed to meet standards and guides or other objectives. 

Silvicultural Prescription: Even-age Management - Clearcut (Alternatives 2, 3, 5)

This stand is being recommended for harvest at this time because it is not expected to obtain the desired condition given the 

current growth trajectory. This stand is over-mature with moderate to high stem decay and defect resulting in a situation 

where stand growth is being offset or exceeded by decay. Even-aged clear cutting is being prescribed to preclude or 

minimize the risk of windthrow after harvest, promote natural regeneration by opening up the canopy, and minimize defect 

and disease in the future stand to the maximum extent possible. 

Silvicultural Prescription: Uneven-age Management Single Tree Selection (Alternative 4)

Maintain at least 50 percent of the setting pretreatment basal area, based on standing live tree total for the unit, uncut. 

Individual trees selected for harvest may occur in small groups but will generally be evenly distributed across the stand. Any 

small groups will usually be less than one acre but may occasionally go up to two acres in size where needed to address 

insect and disease issues or capitalize on existing advanced regeneration of desirable tree species. Trees selected for 

harvest will generally be well distributed and no large openings will occur as a result of the harvest. Review the marking 

guides and silvicultural prescription for more detailed information and direction regarding how to implement this prescription. 

The uneven-aged single tree selection regeneration method is being prescribed for this unit in Alternative 4 specifically to 

maintain intact diverse structure for wildlife needed at this time and place in the landscape to meet the objectives of this 

alternative. This system is not optimum for promoting timber production but is being prescribed primarily to mitigate the 

overall effects of the project on wildlife.

 TIMBER/LOGGING:

This unit is planned for helicopter yarding to landings on existing NFS road 3016015.

 ENGINEERING/ROADS:

No proposed road construction

 BOTANY:

No Concerns

 FISHERIES:

Unit

Number 90 Alternatives 2, 3, 4, 5

Summary of Concerns, Responses, BMPs and Mitigation

 INVASIVE SPECIES:

No Concerns
Unit 90

Streams are tributaries to Thorne River.

Stream#: 3 Class: III, IV Flagging: O/W, G/W C- Type: HCM, HCL

Concerns: blowdown.

Buffer (RMA): Class III for HCM to the top of the side-slope break. Class IV for HCL none.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): Will be identified by IDT during layout.

Protection: Category B and C 

Stream#: 27 Class: III Flagging: O/W C- Type: HCL

Concerns: blow down and active erosion.

Buffer (RMA): Class III for HCL to the top of the side-slope break.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): Will be identified by IDT during layout.

Protection: Category B

Stream#: 23 Class: III Flagging: O/W C- Type: HCL

Concerns: blowdown.

Buffer (RMA): Class III for HCL to the top of the side-slope break.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed

Protection: Category B 

All other streams in unit: Class: IV Flagging: G/W C- Type: HC

Buffer (RMA): none Buffer (RAW): no review needed.

Protection: Category C )

 GEOLOGY/KARST:

No Concerns

 HERITAGE RESOURCES:

This unit was investigated per the third amended interagency Programmatic Agreement (PA) for historic properties. As 

specified by the PA, any potential adverse effect on historic properties (if any) was mitigated and portions of the Area of 

Potential Effect will be monitored by a qualified heritage specialist during and/or after actual ground disturbance.

 SCENERY:

The Scenic Integrity Objective (SIO) for this unit is Very Low . It is almost entirely in Timber Production LUD and is mostly 

Not Seen. There are no scenery resource concerns.

 RECREATION:

Portions of the western border of the unit are adjacent to the Thorne River inventoried roadless area.

 SOILS/WETLANDS:

Slopes in this unit range from 30% to greater than 72%. Approximately 142 acres in the original unit were excluded due to 

very high landslide potential, colluvial activity, historic landslides, and steep slopes; however, many of these acres are in 

roadless and were excluded for that reason as well. Two small debris avalanches have been mapped in the southern part of 

the unit. These debris avalanches can be operated around. Forested wetlands are dominant. This unit is under further 

evaluation and may be changed to full suspension with partial cut to meet soil and wetland resource concerns (BMPs 12.5, 

13.5, and 13.9).

 WILDLIFE:

Unit includes average snow deer winter range (entire unit). Unit is near Honker large OGR complex. Legacy standard and 

guideline does not apply in this VCU.

Alternative 4: Prescription is 50% basal area removal to maintain connectivity, mitigate concerns raised by ADF&G about 

wolves, and maintain other habitat values.
3016015

3016017

3016010

1

28

A3.1R

2

26

A1.1L.1R

2 3

21

1.1R

3

3.1R

1. 10L.2R

A3

1.10L

1.2L

.2 R.2L.1R

1.10L

1.10L

1.10L.2R.1L.1L

1

1.10L.2R.A

1.10L.2R.1L

23.1L

1.10L.2R.1L.2L

4

1.10L.2R

1 . 10 L.4L

30

1

1.10L

24

3.1L

1.10L.1L

3

2.1R

1.5

1.10L.3L

2

1.10L.2R.2L-BR

1. 10L.2R.1L

25

31

1.1L

27

1.10L.2R.2 L

29

A1.1L

1998

1998

2005

1998

1977

1977

1977

1998

90

90

91

92

94

89

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 090 Alternative 2 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Partial Cut

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

580

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt2.mxd 14 July 2012

RR

SR
3016010

3016015

3016017

A3

A1.1L

28

A3.1R

2

26

A1.1L.1R

2 3

1.1R

21

3

3.1R

1. 10L.2R

1

1.10L

1.2L

.2 R.2L.1R

1.10L

1.10L

1.10L.2R.1L.1L

1

1.10L.2R.A

1.10L.2R.1L

23.1L

1.10L.2R.1L.2L

4

1.10L.2R

1 . 10 L.4L

30

1

1.10L

24

3.1L

1.10L.1L

3

2.1R

1.5

1.10L.3L

2

1.10L.2R.2L-BR

1. 10L.2R.1L

25

31

1.1L

27

1.10L.2R.2 L

29

1998

1998

2005

1998

1977

1977

1977

1998

90

91

92

94

89

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 090 Alternative 3 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

580

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt3.mxd 14 July 2012

RR

SR
3016017

3016010

3016015

1.2L

A3.1R

2

26

A1.1L.1R

2 3

21

3

24

3.1R

1. 10L.2R

A3

1

1.10L.2 R.2L.1R

1.10L

1.10L

1.10L.2R.1L.1L

1

1.10L.2R.A

1.10L.2R.1L

23.1L

1.10L.2R.1L.2L

4

1.10L.2R

1 . 10 L.4L

30

1

1.1R

1.10L

3.1L

1.10L.1L

3

2.1R

1.5

1.10L.3L

2

1.10L.2R.2L-BR

1. 10L.2R.1L

25

31

1.1L

27

1.10L.2R.2 L

29

A1.1L

28

1998

1998

1998

1998

1977

1977

1977

2005

90

91

92

94

90

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 090 Alternative 4 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

580

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt4.mxd 20 March 2012

RR

SR
3016015

3016017

3016010

1

28

A3.1R

2

26

A1.1L.1R

2 3

21

1.1R

3

3.1R

1. 10L.2R

A3

1.10L

1.2L

.2 R.2L.1R

1.10L

1.10L

1.10L.2R.1L.1L

1

1.10L.2R.A

1.10L.2R.1L

23.1L

1.10L.2R.1L.2L

4

1.10L.2R

1 . 10 L.4L

30

1

1.10L

24

3.1L

1.10L.1L

3

2.1R

1.5

1.10L.3L

2

1.10L.2R.2L-BR

1. 10L.2R.1L

25

31

1.1L

27

1.10L.2R.2 L

29

A1.1L

1998

1998

2005

1998

1977

1977

1977

1998

90

90

91

92

94

89

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 090 Alternative 5 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Sytematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

580

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt5.mxd 14 July 2012

RR

SR
Unit 91

Total Unit

Acres:

16.9 Prescription: Clearcut

VCU

Number:

580 Harvest

System:

Helicopter

Net Harvest

Volume

(MBF):

200

LUD:

Timber Production

 SILVICULTURE:

Existing Condition: The unit is an old-growth stand with mostly high elevation characteristics. The majority of the 

merchantable timber was free of mistletoe, but had moderate to high heartwood and stem decay. Many trees displayed signs 

of being over-mature with dying or dead tops. Windthrow risk is moderate. All adjacent previous harvest areas have met 

green-up with regeneration over 5 foot tall and meet NFMA requirements for no longer being considered openings.

Silvicultural Objective/Desired Condition: The desired condition for this stand is a highly productive, healthy, windfirm stand 

grown for timber management that retains residual trees as needed to meet standards and guides or other objectives. 

Silvicultural Prescription: Even-age Management -Clearcut 

This stand is being recommended for harvest at this time because it is not expected to obtain the desired condition given the 

current growth trajectory. This stand is over-mature with moderate to high stem decay and defect resulting in a situation 

where stand growth is being offset or exceeded by decay. Even-aged clear cutting is being prescribed to preclude or 

minimize the risk of windthrow after harvest, promote natural regeneration by opening up the canopy, and minimize defect 

and disease in the future stand to the maximum extent possible.

 TIMBER/LOGGING:

This unit is planned for helicopter yarding to a landing on existing NFS road 3016017.

 ENGINEERING/ROADS:

No proposed road construction

 BOTANY:

No Concerns

 FISHERIES:

Streams are tributaries to Thorne River. (Stream 218-1 characteristics do not include project-specific, field-verified, 

information). 

Stream#: 23 Class: III Flagging: O/W C- Type: HCL

Concerns: blowdown

Buffer (RMA): Class III for HCL to the top of the side-slope break.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): Will be identified by IDT during layout.

Protection: Category B

Stream#: 20 Class: III, IV Flagging: O/W, G/W C- Type: HCM, HCL

Concerns: blowdown

Buffer (RMA): Class III for HCM and HCL to the top of the side-slope break. Class IV for HCL none.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): Will be identified by IDT during layout.

Protection: Category B and C

Stream#: 20.1R Class: III, IV Flagging: O/W, G/W C- Type: HCL

Concerns: none

Buffer (RMA): Class III for HCL to the top of the side-slope break. Class IV for HCL none.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): Will be identified by IDT during layout.

Protection: Category B and C 

Stream#: 218-1 Class: III Flagging: O/W C- Type: HCM

Concerns: none known

Unit

Number 91 Alternatives 2, 3, 4, 5

Summary of Concerns, Responses, BMPs and Mitigation

 INVASIVE SPECIES:

No Concerns
Unit 91

Buffer (RMA): Class III for HCM to the top of the side-slope break.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed

Protection: Category B

All other streams in unit: Class: IV Flagging: G/W C- Type: HC

Buffer (RMA): none Buffer (RAW): no review needed

Protection: Category C

 GEOLOGY/KARST:

No Concerns

 HERITAGE RESOURCES:

This unit was investigated per the third amended interagency Programmatic Agreement (PA) for historic properties. As 

specified by the PA, any potential adverse effect on historic properties (if any) was mitigated and portions of the Area of 

Potential Effect will be monitored by a qualified heritage specialist during and/or after actual ground disturbance.

 SCENERY:

The Scenic Integrity Objective (SIO) for this unit is Very Low . It is entirely in Timber Production LUD and is considered Not 

Seen. There are no scenery resource concerns.

 RECREATION:

Western border of unit is adjacent to the Thorne River inventoried roadless area.

 SOILS/WETLANDS:

Slopes in this unit range from 30% to greater than 72%. Approximately 142 acres of the original unit (which included both 

Units 90 and 91) were excluded due to very high landslide potential, colluvial activity, historic landslides, and steep slopes; 

however, many of these acres are in roadless and were excluded for that reason as well. Forested wetlands are 

dominant.This unit is under further evaluation and may be changed to full suspension with partial cut to meet soil and 

wetland resource concerns (BMPs 12.5, 13.5, and 13.9).

 WILDLIFE:

Unit includes average snow deer winter range (entire unit). Unit is near Honker large OGR complex and IRA. Legacy 

standard and guideline does not apply in this VCU.
3015000

3016010

3016017

3015700

3015000

1.10L.2R.1L.1L

1.1 0L.2R

1.15L

4

2 0

218-1

23

21

1.14 L.1R

3

1.10L.2 R.2L.1R

1 10L.1L

1.10L.2R.A

1.14L.3L

1.14L.5L

1

1.10L.2R.1L

2

1.14L.4L

1.10L.2R.1L.2L

1.15L.1R

1.14L.2L

1.10L.2R

1 .1 0 L.4L

1.12L

1.11L

1

24

A1

23.1 L

1.10L.3L

1.15LB

1.10L.2R.2L-BR

1.1 0 L. 2R.1L

1.14L.6L

25

27

1.10L.2R.2L

1.10L

1.13 L

20.1R

1.16L

20

1. 1 4L

1

26

22

1.14L

20.2R

1976

1998

1976

1976

1998

2005

1998

1998

91

92

93

95

90

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 091 Alternative 2 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Partial Cut

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

580

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt2.mxd 14 July 2012

RR

SR
3015000

3016010

3016017

3015700

3015000

1.10L.2R.1L.1L

1.1 0L.2R

1.15L

4

2 0

218-1

23

21

1.14 L.1R

3

1.10L.2 R.2L.1R

1 10L.1L

1.10L.2R.A

1.14L.3L

1.14L.5L

1

1.10L.2R.1L

2

1.14L.4L

1.10L.2R.1L.2L

1.15L.1R

1.14L.2L

1.10L.2R

1 .1 0 L.4L

1.12L

1.11L

1

24

A1

23.1 L

1.10L.3L

1.15LB

1.10L.2R.2L-BR

1.1 0 L. 2R.1L

1.14L.6L

25

27

1.10L.2R.2L

1.10L

1.13 L

20.1R

1.16L

20

1. 1 4L

1

26

22

1.14L

20.2R

1976

1998

1976

1976

1998

2005

1998

1998

91

92

93

95

90

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 091 Alternative 3 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

580

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt3.mxd 14 July 2012

RR

SR
3016010

3016017

3015000

3015000

3015700

1.10L.2R.A

1.15L

4

2 0

218-1

23

21

3

23.1 L

1.10L.2 R.2L.1R

1 10L.1L

1.10L.2R.1L.1L

1.14L.3L

1.14L.5L

1

1.10L.2R.1L

2

1.14L.4L

1.10L.2R.1L.2L

1.15L.1R

1.14L.2L

1.10L.2R

1 .1 0 L.4L

1.12L

1.11L

1

24

1.14 L.1R

A1

1.10L.3L

1.15LB

1.10L.2R.2L-BR

1.1 0 L. 2R.1L

1.14L.6L

25

27

1.10L.2R.2L

1.10L

1.13 L

20.1R

1.16L

20

1. 1 4L

1

26

22

1.14L

20.2R

1.1 0L.2R

1976

1998

1976

1998

2005

1976

1998

1998

91

92

93

90

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 091 Alternative 4 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

580

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt4.mxd 20 March 2012

RR

SR
3015000

3016010

3015700

3016017

3015000

1.10L.2R.1L.1L

1.1 0L.2R

1.15L

4

2 0

218-1

23

21

1.14 L.1R

3

1.10L.2 R.2L.1R

1 10L.1L

1.10L.2R.A

1.14L.3L

1.14L.5L

1

1.10L.2R.1L

2

1.14L.4L

1.10L.2R.1L.2L

1.15L.1R

1.14L.2L

1.10L.2R

1 .1 0 L.4L

1.12L

1.11L

1

24

A1

23.1 L

1.10L.3L

1.15LB

1.10L.2R.2L-BR

1.1 0 L. 2R.1L

1.14L.6L

25

27

1.10L.2R.2L

1.10L

1.13 L

20.1R

1.16L

20

1. 1 4L

1

26

22

1.14L

20.2R

1976

1998

1976

1976

1998

2005

1998

1998

91

92

93

95

90

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 091 Alternative 5 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Sytematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

580

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt5.mxd 14 July 2012

RR

SR
Unit 92

Total Unit

Acres:

3.5 Prescription: Clearcut

VCU

Number:

580 Harvest

System:

Shovel, 

Helicopter

Net Harvest

Volume

(MBF):

55

LUD:

Timber Production

 SILVICULTURE:

Existing Condition: The overstory consists primarily of a mixture of western hemlock and western redcedar with scattered 

Sitka spruce. Stand structure is old growth. Defect and damages are moderate on average, but high especially in the 

western hemlock due to heavy heart and stem decay. Mistletoe is moderate. All adjacent previous harvest areas have met 

green-up with regeneration over 5 foot tall and meet NFMA requirements for no longer being considered openings.

Silvicultural Objective/Desired Condition: The desired condition for this stand is a highly productive, healthy, windfirm stand 

grown for timber management that retains residual trees as needed to meet standards and guides or other objectives. 

Silvicultural Prescription: Even-age Management -Clearcut 

This stand is being recommended for harvest at this time because it is not expected to obtain the desired condition given the 

current growth trajectory. This stand is mature to over-mature with high stem decay and moderate overall defect resulting in a 

situation where stand growth is being offset or exceeded by decay. Even-aged clear cutting is being prescribed to preclude or 

minimize the risk of windthrow after harvest, promote natural regeneration by opening up the canopy, and minimize defect 

and disease in the future stand to the maximum extent possible.

 TIMBER/LOGGING:

This unit is planned for a combination of helicopter and shovel yarding. Shovel settings are planned for yarding to the existing 

NFS roads 3016010 and 3016017. Helicopter yarding is planned for yarding to a landing on existing NFS road 3016010.

 ENGINEERING/ROADS:

 No proposed road construction.

 BOTANY:

No Concerns

 FISHERIES:

Streams are tributaries to Thorne River. 

Stream#: 1.10L Class: II, III Flagging: B/W, O/W C- Type: FPS, MMS, HCL

Concerns: blowdown, active erosion, debris-induced braiding

Buffer (RMA): Class I greater of 130 feet (FPS) or 120 feet (MMO), flood plain, riparian vegetation or soils, or riparian 

associated wetland fens. Class II and III for HCL greater of 100 feet or to the top of the side-slope break. 

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed

Protection: Category A and B 

Stream#: 1.10L.1L Class: II Flagging: B/W C- Type: MMO

Concerns: none

Buffer (RMA): Class II for MMO greater of 120 feet, flood plain, riparian vegetation or soils, or riparian associated wetland 

fens. 

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed

Protection: Category A 

Stream#: 1.10L.3L Class: II, IV Flagging: B/W, G/W C- Type: HCO

Concerns: blowdown and active erosion

Buffer (RMA): Class II for HCO greater of 100 feet or to the top of the side-slope break. Class IV for HCO none.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed

Protection: Category A and C 

Unit

Number 92 Alternatives 2, 3, 4, 5

Summary of Concerns, Responses, BMPs and Mitigation

 INVASIVE SPECIES:

No Concerns
Unit 92

Stream#: 1.10L.4L Class: II, IV Flagging: B/W, G/W C- Type: HCO

Concerns: blowdown

Buffer (RMA): Class II for HCO greater of 100 feet or to the top of the side-slope break. Class IV for HCO none. 

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed 

Protection: Category A and C 

Stream#: 1.10L.2R Class: I Flagging: B/W C- Type: MMS, HCO

Concerns: blowdown 

Buffer (RMA): Class I for MMS greater of 120 feet, flood plain, riparian vegetation or soils, or riparian associated wetland 

fens. Class I for HCO greater of 100 feet or to the top of the side-slope break

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed 

Mitigation/Protection: Category A

Stream#: 1.10L.2R.1L 	Class: II, IV Flagging: B/W, G/W C- Type: HCO

Concerns: blowdown

Buffer (RMA): Class II for HCO greater of 100 feet or to the top of the side-slope break. Class IV for HCO none. 

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed

Protection: Category A and C 

Stream#: 1.10L.2R.2L 	Class: II, IV Flagging: B/W, G/W C- Type: HCO

Concerns: none

Buffer (RMA): Category II for HCO greater of 100 feet or to the top of the side-slope break. Class IV for HCO none. 

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed

Mitigation/Protection: Category A and C

Stream#: 1.10L.2R.2L-BR Class: II Flagging: B/W C- Type: HCO

Concerns: none

Buffer (RMA): Category II for HCO greater of 100 feet or to the top of the side-slope break. 

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed

Mitigation/Protection: Category A 

All other streams in unit: Class: IV Flagging: G/W C- Type: HC or MM

Buffer (RMA): none Buffer (RAW): no review needed

Mitigation/Protection: Category C

 GEOLOGY/KARST:

No Concerns

 HERITAGE RESOURCES:

This unit was investigated per the third amended interagency Programmatic Agreement (PA) for historic properties. As 

specified by the PA, any potential adverse effect on historic properties (if any) was mitigated and portions of the Area of 

Potential Effect will be monitored by a qualified heritage specialist during and/or after actual ground disturbance.

 SCENERY:

The Scenic Integrity Objective (SIO) for this unit is Very Low . It is entirely in Timber Production LUD and is considered Not 

Seen. There are no scenery resource concerns.

 RECREATION:

No concerns

 SOILS/WETLANDS:

The unit was reviewed for steep slopes. Slopes range from level to 30%. There is approximately 1 acre (35% of the unit) of 

forested wetland in the southern polygon (BMP 12.5). The soils and wetlands are suitable for a minimum partial suspension 

yarding or shovel yarding. All logging systems should follow BMPs 12.5, 13.2 and 13.9. Slopes over 25% gradient may not 

be suitable for shovel yarding under some soil moisture conditions. Use care when approving shovel yarding on slopes over 

25% gradient. Avoid track slippage and rutting.

 WILDLIFE:

Unit includes average snow deer winter range (entire unit), some of which is also deep snow marten habitat/deer winter 

range (most of northern piece). Unit is near Honker large OGR complex. Legacy standard and guideline does not apply in 

this VCU.
3016015

3016017

3016010

1.10L.2R.2L.1R

26

22

1.14 L

21

BRAID

1.15L

1.1L.2R

1.1 4L.1R

20

23

1.10L.2R

1

1.2L

1

1.10L

1.10L

1.10L.2R.1L.1L

1.10L.2R.A

1.14L.3L

1.14L.5L

1.10L.2R.1L

1.14L.4L

1.10L.2R.1L.2L

1.15L.1R

1.14L.2L

1.10L.2R

1.10L.4L

1.12 L

30

24

A1.1L.1R

23.1L

1.10L.1L

1.10L. 3L

1.11L

1.15LB

1.10L.2R.2L-BR

1.10 L.2R.1L

1.14L.6L

25

1

27

1.10L.2R.2L

1.10L

29

1.13L

20.1R

1.14L

1

28

1998

1976

1998

1998

2005

1977

1998

1998 91

92

93

94

94

90

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 092 Alternative 2 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Partial Cut

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

580

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt2.mxd 14 July 2012

RR

SR
3016015

3016017

3016010

1.10L.2R.2L.1R

26

22

1.14 L

21

BRAID

1.15L

1.1L.2R

1.1 4L.1R

20

23

1.10L.2R

1

1.2L

1

1.10L

1.10L

1.10L.2R.1L.1L

1.10L.2R.A

1.14L.3L

1.14L.5L

1.10L.2R.1L

1.14L.4L

1.10L.2R.1L.2L

1.15L.1R

1.14L.2L

1.10L.2R

1.10L.4L

1.12 L

30

24

A1.1L.1R

23.1L

1.10L.1L

1.10L. 3L

1.11L

1.15LB

1.10L.2R.2L-BR

1.10 L.2R.1L

1.14L.6L

25

1

27

1.10L.2R.2L

1.10L

29

1.13L

20.1R

1.14L

1

28

1998

1976

1998

1998

2005

1977

1998

1998 91

92

93

94

90

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 092 Alternative 3 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

580

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt3.mxd 14 July 2012

RR

SR
3016015

3016017

3016010

1.10L.2R.2L.1R

26

22

1.14 L

21

BRAID

1.15L

1.1L.2R

1.1 4L.1R

20

23

1.10L.2R

1

1.2L

1

1.10L

1.10L

1.10L.2R.1L.1L

1.10L.2R.A

1.14L.3L

1.14L.5L

1.10L.2R.1L

1.14L.4L

1.10L.2R.1L.2L

1.15L.1R

1.14L.2L

1.10L.2R

1.10L.4L

1.12 L

30

24

A1.1L.1R

23.1L

1.10L.1L

1.10L. 3L

1.11L

1.15LB

1.10L.2R.2L-BR

1.10 L.2R.1L

1.14L.6L

25

1

27

1.10L.2R.2L

1.10L

29

1.13L

20.1R

1.14L

1

28

1998

1976

1998

1998

2005

1977

1998

1998 91

92

93

94

94

90

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 092 Alternative 4 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

580

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt4.mxd 20 March 2012

RR

SR
3016015

3016017

3016010

1.10L.2R.2L.1R

26

22

1.14 L

21

BRAID

1.15L

1.1L.2R

1.1 4L.1R

20

23

1.10L.2R

1

1.2L

1

1.10L

1.10L

1.10L.2R.1L.1L

1.10L.2R.A

1.14L.3L

1.14L.5L

1.10L.2R.1L

1.14L.4L

1.10L.2R.1L.2L

1.15L.1R

1.14L.2L

1.10L.2R

1.10L.4L

1.12 L

30

24

A1.1L.1R

23.1L

1.10L.1L

1.10L. 3L

1.11L

1.15LB

1.10L.2R.2L-BR

1.10 L.2R.1L

1.14L.6L

25

1

27

1.10L.2R.2L

1.10L

29

1.13L

20.1R

1.14L

1

28

1998

1976

1998

1998

2005

1977

1998

1998 91

92

93

94

94

90

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 092 Alternative 5 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Sytematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

580

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt5.mxd 14 July 2012

RR

SR
Unit 93

Total Unit

Acres:

6.8 Prescription: Clearcut

VCU

Number:

580 Harvest

System:

Helicopter

Net Harvest

Volume

(MBF):

128

LUD:

Timber Production

 SILVICULTURE:

Existing Condition: This unit has old growth stand structure. The overstory consists primarily of western hemlock with 

western redcedar as a secondary component. Damages and defects are generally high for all species. In the western 

hemlock stem and heart decay are high, while mistletoe is generally light. Windthrow risk is moderate. All adjacent previous 

harvest areas have met green-up with regeneration over 5 foot tall and meet NFMA requirements for no longer being 

considered openings.

Silvicultural Objective/Desired Condition: The desired condition for this stand is a highly productive, healthy, windfirm stand 

grown for timber management that retains residual trees as needed to meet standards and guides or other objectives. 

Silvicultural Prescription: Even-age Management - Clearcut 

This stand is being recommended for harvest at this time because it is not expected to obtain the desired condition given the 

current growth trajectory. This stand is mature to over-mature with high stem decay and defect resulting in a situation where 

stand growth is being offset or exceeded by decay. Even-aged clear cutting is being prescribed to preclude or minimize the 

risk of windthrow after harvest, promote natural regeneration by opening up the canopy, and minimize defect and disease in 

the future stand to the maximum extent possible.

 TIMBER/LOGGING:

This unit is planned for helicopter yarding to a landing on existing NFS road 3016017.

 ENGINEERING/ROADS:

 No proposed road construction

 BOTANY:

No Concerns

 FISHERIES:

Streams are tributaries to Thorne River. 

Stream#: 1 Class: I Flagging: B/W C- Type: MMS

Concerns: none

Buffer (RMA): Class I for MMS greater of 120 feet, flood plain, riparian vegetation or soils, or riparian associated wetland 

fens. 

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed

Protection: Category A 

Stream#: 1.13L Class: I Flagging: B/W C- Type: MMO

Concerns: none

Buffer (RMA): Class I for MMO greater of 120 feet, flood plain, riparian vegetation or soils, or riparian associated wetland 

fens. 

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed

Protection: Category A 

Stream#: 1.14L Class: I Flagging: B/W C- Type: MMS, HCL

Concerns: blowdown

Buffer (RMA): Class I for MMS greater of 120 feet, flood plain, riparian vegetation or soils, or riparian associated wetland 

fens. Class I for HCL greater of 100 feet or to the top of the side-slope break.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed 

Protection: Category A 

Unit

Number 93 Alternatives 2, 3, 4, 5

Summary of Concerns, Responses, BMPs and Mitigation

 INVASIVE SPECIES:

No Concerns
Unit 93

Stream#: 1.14L.1R Class: I Flagging: B/W C- Type: MMO, PAO

Concerns: none

Buffer (RMA): Class I greater of 120 feet (MMO) or 100 feet (PAO), flood plain, riparian vegetation or soils, or riparian 

associated wetland fens. 

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed

Protection: Category A 

Stream#: 1.5L Class: I Flagging: B/W C- Type: MMO

Concerns: none

Buffer (RMA): Class I for MMO greater of 120 feet, flood plain, riparian vegetation or soils, or riparian associated wetland 

fens. 

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed

Protection: Category A (See Stream Protection and Mitigation Measures)

Stream#: 1.5LB Class: II Flagging: B/W C- Type: FPO, HCO

Concerns: none

Buffer (RMA): Class II for FPO greater of 130 feet , flood plain, riparian vegetation or soils, or riparian associated wetland 

fens. Class II for HCO greater of 100 feet or the side-slope break.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed

Protection: Category A (See Stream Protection and Mitigation Measures)

 GEOLOGY/KARST:

No Concerns

 HERITAGE RESOURCES:

This unit was investigated per the third amended interagency Programmatic Agreement (PA) for historic properties. As 

specified by the PA, any potential adverse effect on historic properties (if any) was mitigated and portions of the Area of 

Potential Effect will be monitored by a qualified heritage specialist during and/or after actual ground disturbance.

 SCENERY:

The Scenic Integrity Objective (SIO) for this unit is Very Low . It is entirely in Timber Production LUD and is considered Not 

Seen. There are no scenery resource concerns.

 RECREATION:

No concerns

 SOILS/WETLANDS:

Slopes are nearly level to 15%. Approximately 15% of the unit is forested wetland. A minimum of partial suspension would 

meet soil and wetland resource concerns (BMPs 12.5, 13.5, and 13.9).

 WILDLIFE:

Unit includes average snow deer winter range (entire unit). Unit is near Honker large OGR complex and IRA. Legacy 

standard and guideline does not apply in this VCU.

Old-growth Reserve (OGR) Boundary

Alternatives 2, 4, and 5: Current OGR boundary is to the east of unit. 

Alternative 3: OGR boundary moved northeast, farther from unit.
3016017

3015000

3016010

20

26

22

1.14 L

1.10L.2R

1.15L

1.1L.2R

BRAID

1.1 4L.1R

20

2

23

1

0.2R

1

1.10L

1.10L.2R.2L.1R

1.10L.2R.1L.1L

1.10L.2R.A

1.14L.3L

1.14L.5L

1.10L.2R.1L

1.14L.4L

1.10L.2R.1L.2L

1.15L.1R

1.14L.2L

1.10L.2R

1.10L.4L

1.12 L

24

20.1R

23.1L

1.10L. 3L

1.11L

1.15LB

1.10L.2R.2L-BR

5

1.10 L.2R.1L

1.14L.6L

25

1

1.10L.2R.2L

1.10L

1.3L

1.13L

6

1.16L

1.14L

1

1998

1976

1998

1998

1998

1998

1976

2005

91

92

93

94

94

90

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 093 Alternative 2 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Partial Cut

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

580

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt2.mxd 14 July 2012

RR

SR
3015000

3016010

3016017

1.10L

22

1.14 L

1.10L.2R

1.15L

1.1L.2R

BRAID

20

23.1L

2

23

1

0.2R

1

20

1.10L.2R.2L.1R

1.10L.2R.1L.1L

1.10L.2R.A

1.14L.3L

1.14L.5L

1.10L.2R.1L

1.14L.4L

1.10L.2R.1L.2L

1.15L.1R

1.14L.2L

1.10L.2R

1.10L.4L

1.12 L

24

1.1 4L.1R

20.1R

1.10L. 3L

1.11L

1.15LB

1.10L.2R.2L-BR

5

1.10 L.2R.1L

1.14L.6L

25

1

1.10L.2R.2L

1.10L

1.3L

1.13L

6

1.16L

1.14L

1

26

1998

1976

1976

1998

1998

1998

1998

2005

91

92

93

94

90

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 093 Alternative 3 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

580

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt3.mxd 14 July 2012

RR

SR
3016017

3015000

3016010

20

26

22

1.14 L

1.10L.2R

1.15L

1.1L.2R

BRAID

1.1 4L.1R

20

2

23

1

0.2R

1

1.10L

1.10L.2R.2L.1R

1.10L.2R.1L.1L

1.10L.2R.A

1.14L.3L

1.14L.5L

1.10L.2R.1L

1.14L.4L

1.10L.2R.1L.2L

1.15L.1R

1.14L.2L

1.10L.2R

1.10L.4L

1.12 L

24

20.1R

23.1L

1.10L. 3L

1.11L

1.15LB

1.10L.2R.2L-BR

5

1.10 L.2R.1L

1.14L.6L

25

1

1.10L.2R.2L

1.10L

1.3L

1.13L

6

1.16L

1.14L

1

1998

1976

1998

1998

1998

1998

1976

2005

91

92

93

94

94

90

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 093 Alternative 4 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

580

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt4.mxd 20 March 2012

RR

SR
3016017

3015000

3016010

20

26

22

1.14 L

1.10L.2R

1.15L

1.1L.2R

BRAID

1.1 4L.1R

20

2

23

1

0.2R

1

1.10L

1.10L.2R.2L.1R

1.10L.2R.1L.1L

1.10L.2R.A

1.14L.3L

1.14L.5L

1.10L.2R.1L

1.14L.4L

1.10L.2R.1L.2L

1.15L.1R

1.14L.2L

1.10L.2R

1.10L.4L

1.12 L

24

20.1R

23.1L

1.10L. 3L

1.11L

1.15LB

1.10L.2R.2L-BR

5

1.10 L.2R.1L

1.14L.6L

25

1

1.10L.2R.2L

1.10L

1.3L

1.13L

6

1.16L

1.14L

1

1998

1976

1998

1998

1998

1998

1976

2005

91

92

93

94

94

90

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 093 Alternative 5 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Sytematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

580

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt5.mxd 14 July 2012

RR

SR
Unit 94

Total Unit

Acres:

2, 3, 5 - 18.3

4 - 18.1

Prescription: 2, 3, 5 - Clearcut

4 - 25% Removal

VCU

Number:

580 Harvest

System:

Helicopter

Net Harvest

Volume

(MBF):

2, 3, 5 - 320

4 - 80 LUD:

Timber Production

 SILVICULTURE:

Existing Condition: This unit has old-growth stand structure. The overstory consists primarily of western hemlock, western 

redcedar and Alaska-cedar. The stand is being affected by moderate heart rot, bole cracks, dead tops and heavy mistletoe 

infection. The overall average defect was rated as moderate. Windthrow risk is moderate. All adjacent previous harvest 

areas have met green-up with regeneration over 5 foot tall and meet NFMA requirements for no longer being considered 

openings.

Silvicultural Objective/Desired Condition: The desired condition for this stand is a highly productive, healthy, windfirm stand 

grown for timber management that retains residual trees as needed to meet standards and guides or other objectives. 

Silvicultural Prescription: Even-age Management-Clearcut (Alternatives 2, 3, and 5)

This stand is being recommended for harvest at this time because it is not expected to obtain the desired condition given the 

current growth trajectory. This stand is mature with moderate stem decay and defect resulting in a situation where stand 

growth is being offset by decay. Even-aged clear cutting is being prescribed to preclude or minimize the risk of windthrow 

after harvest, promote natural regeneration by opening up the canopy, and minimize defect and disease in the future stand to 

the maximum extent possible. 

Silvicultural Prescription: Uneven-age Management Single Tree Selection (Alternative 4)

Maintain at least 75 percent of the setting pretreatment basal area, based on standing live tree total for the unit, uncut. 

Individual trees selected for harvest may occur in small groups but will generally be evenly distributed across the stand. Any 

small groups will usually be less than one acre but may occasionally go up to two acres in size where needed to address 

insect and disease issues or capitalize on existing advanced regeneration of desirable tree species. Trees selected for 

harvest will generally be well distributed and no large openings will occur as a result of the harvest. Review the marking 

guides and silvicultural prescription for more detailed information and direction regarding how to implement this prescription. 

The uneven-aged single tree selection regeneration method is being prescribed for this unit in Alternative 4 specifically to 

maintain intact diverse structure for wildlife needed at this time and place in the landscape to meet the objectives of this 

alternative. This system is not optimum for promoting timber production but is being prescribed primarily to mitigate the 

overall effects of the project on wildlife.

 TIMBER/LOGGING:

This unit is planned for helicopter yarding to landings on existing NFS road 3015000.

 ENGINEERING/ROADS:

 No proposed road construction

 BOTANY:

One population of Alaska rein orchid (sensitive plant) just slightly overlapped with unit. Unit was trimmed very slightly (0.01 

acre) to avoid direct impact in Alternatives 2, 3, and 5; unit was trimmed about 0.1 acre, which provides a 50-ft buffer to 

minimize indirect effects, in Alteranative 4. Buffer was not wider because only a corner of population is involved.

This unit could slightly indirectly affect this Alaska rein orchid population..

 FISHERIES:

Unit

Number 94 Alternatives 2, 3, 4, 5

Summary of Concerns, Responses, BMPs and Mitigation

 INVASIVE SPECIES:

No Concerns
Unit 94

Streams are tributaries to Thorne River. 

Stream#: 1 Class: I Flagging: B/W C- Type: FPL 

Concerns: blowdown

Buffer (RMA): Class I for FPL greater of 130 feet, flood plain, riparian vegetation or soils, or riparian associated wetland fens. 

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed 

Protection: Category A 

Stream#: 1.3L Class: II Flagging: B/W, G/W C- Type: MMO

Concerns: none

Buffer (RMA): Class I for MMO greater of 120 feet, flood plain, riparian vegetation or soils, or riparian associated wetland 

fens. 

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed

Protection: Category A 

Stream#: 1.1L.2R Class: I Flagging: B/W C- Type: MMO

Concerns: none

Buffer (RMA): Class I for MMO greater of 120 feet, flood plain, riparian vegetation or soils, or riparian associated wetland 

fens. 

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed

Protection: Category A 

All other streams in unit: Class: IV Flagging: G/W C- Type: HC or MM

Buffer (RMA): none Buffer (RAW): no review needed

Protection: Category C

 GEOLOGY/KARST:

No Concerns

 HERITAGE RESOURCES:

This unit was investigated per the third amended interagency Programmatic Agreement (PA) for historic properties. As 

specified by the PA, any potential adverse effect on historic properties (if any) was mitigated and portions of the Area of 

Potential Effect will be monitored by a qualified heritage specialist during and/or after actual ground disturbance.

 SCENERY:

The Scenic Integrity Objective (SIO) for this unit is Very Low . It is entirely in Timber Production LUD and is considered Not 

Seen. There are no scenery resource concerns.

 RECREATION:

No concerns

 SOILS/WETLANDS:

Slopes range from level to 35%. Forested wetlands cover approximately 30% of the unit. A minimum of partial suspension 

would meet soil and wetland resource concerns (BMPs 12.5, 13.5, and 13.9).

 WILDLIFE:

Unit includes average snow deer winter range (entire unit), some of which is also deep snow marten habitat/deer winter 

range (northern piece). Legacy standard and guideline does not apply in this VCU.

Alternative 4: Southeast corner of the unit dropped to avoid sensitive plants. Prescription is 25% basal area removal to 

maintain deer winter range, marten habitat, and other habitat values.

Old-growth Reserve (OGR) Boundary

Alternatives 2, 4, and 5: Current OGR boundary is to south of unit. 

Alternative 3: OGR boundary moved to the northeast, farther from unit.
3015000

3016010

3016017

5

6

4.1R

26

1.1L.2R

BRAID

2 5

1 . 10L.2R. 1L

2

1

24

L.2R.1L

0L.2R.1L.2L

1.10L.2R.1L.1L 1.10L.2R.A

1.10L.2R

0L.2R.2L-BR

1.15L.1R

1.14L.2L

1. 1 0L.4L

1.12L

1.10L.2R.2L

5.1R

1.1 4L.1R

1.11L

27

1

1.10L

1

1.3L

1.13L

1.16L

1

24.1R

1.2L

1.14 L

1.10L.2R

5

1.15L

1

4

3

1976

1998

1998

2005

1980

1998

93

94

94

104

104

92

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 094 Alternative 2 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Partial Cut

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

580

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt2.mxd 14 July 2012

RR

SR
3015000

3016010

3016017

5

6

4.1R

26

1.1L.2R

BRAID

2 5

1 . 10L.2R. 1L

2

1

24

L.2R.1L

0L.2R.1L.2L

1.10L.2R.1L.1L 1.10L.2R.A

1.10L.2R

0L.2R.2L-BR

1.15L.1R

1.14L.2L

1. 1 0L.4L

1.12L

1.10L.2R.2L

5.1R

1.1 4L.1R

1.11L

27

1

1.10L

1

1.3L

1.13L

1.16L

1

24.1R

1.2L

1.14 L

1.10L.2R

5

1.15L

1

4

3

1976

1998

1998

2005

1980

1998

93

94

104

439

440

92

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 094 Alternative 3 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

580

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt3.mxd 14 July 2012

RR

SR
3015000

3016010

3016017

5

6

4.1R

26

1.1L.2R

BRAID

2 5

1 . 10L.2R. 1L

2

1

24

L.2R.1L

0L.2R.1L.2L

1.10L.2R.1L.1L 1.10L.2R.A

1.10L.2R

0L.2R.2L-BR

1.15L.1R

1.14L.2L

1. 1 0L.4L

1.12L

1.10L.2R.2L

5.1R

1.1 4L.1R

1.11L

27

1

1.10L

1

1.3L

1.13L

1.16L

1

24.1R

1.2L

1.14 L

1.10L.2R

5

1.15L

1

4

3

1976

1998

1998

2005

1980

1998

93

94

94

104

104

92

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 094 Alternative 4 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

580

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt4.mxd 20 March 2012

RR

SR
3015000

3016010

3016017

5

6

4.1R

26

1.1L.2R

BRAID

2 5

1 . 10L.2R. 1L

2

1

24

L.2R.1L

0L.2R.1L.2L

1.10L.2R.1L.1L 1.10L.2R.A

1.10L.2R

0L.2R.2L-BR

1.15L.1R

1.14L.2L

1. 1 0L.4L

1.12L

1.10L.2R.2L

5.1R

1.1 4L.1R

1.11L

27

1

1.10L

1

1.3L

1.13L

1.16L

1

24.1R

1.2L

1.14 L

1.10L.2R

5

1.15L

1

4

3

1976

1998

1998

2005

1980

1998

93

94

94

104

104

92

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 094 Alternative 5 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Sytematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

580

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt5.mxd 14 July 2012

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Unit 95

Total Unit

Acres:

28.6 Prescription: Clearcut

VCU

Number:

580 Harvest

System:

Cable, 

Shovel, 

Net Harvest

Volume

(MBF):

450

LUD:

Timber Production

 SILVICULTURE:

Existing Condition: This unit has old-growth stand structure with some small areas of uneven-age structure. The overstory 

consists primarily of western hemlock, along with western redcedar. Scattered Sitka spruce are present along with isolated 

patches of Alaska-cedar. Defect is moderate overall. Windthrow risk is moderate. All adjacent previous harvest areas have 

met green-up with regeneration over 5 foot tall and meet NFMA requirements for no longer being considered openings.

Silvicultural Objective/Desired Condition: The desired condition for this stand is a highly productive, healthy, windfirm stand 

grown for timber management that retains residual trees as needed to meet standards and guides or other objectives. 

Silvicultural Prescription: Even-age Management - Clearcut

This stand is being recommended for harvest at this time because it is not expected to obtain the desired condition given the 

current growth trajectory. This stand is mature with moderate stem decay and defect resulting in a situation where stand 

growth is being offset by decay. Even-aged clear cutting is being prescribed to preclude or minimize the risk of windthrow 

after harvest, promote natural regeneration by opening up the canopy, and minimize defect and disease in the future stand to 

the maximum extent possible.

 TIMBER/LOGGING:

Alternatives 2, 3: This unit is planned for a combination of cable, shovel, and helicopter yarding. Shovel settings are planned 

for yarding to the existing NFS road 3015000. Cable settings are planned for uphill and downhill yarding to landings on the 

proposed temporary road and the existing NFS road 3015000. Helicopter yarding is planned to landings on existing NFS 

road 3015000. 

Alternative 5: This unit is planned for a combination of shovel, cable, and helicopter yarding. Shovel settings are planned for 

yarding to the existing NFS road 3015000. Cable settings are planned for downhill yarding to landings on the existing NFS 

road. Helicopter yarding is planned to a landing on existing NFS road 3015000.

 ENGINEERING/ROADS:

Unit is accessed by a proposed temporary road in Alternatives 2 and 3, totaling 1,100 feet, as displayed on the unit card. 

Approximately 300 feet of this road will be constructed across decommissioned road bed. Reconstruction of existing NFS 

road 3015000, totaling 2,400 feet, is required to allow access to the unit. See road card for details. This road is also used to 

access Units 96, 98, 100, 108, and 109

 BOTANY:

No Concerns

 FISHERIES:

Streams are tributaries to Thorne River. (Stream 218-1 characteristics do not include project-specific, field-verified, 

information). 

Stream#: 218-1 Class: III Flagging: O/W C- Type: HCM

Concerns: none known

Buffer (RMA): Class III for HCM to the top of the side-slope break.

Alternatives: 2, 3, and 5			 Buffer (RAW): no review needed

Protection: Category B

Stream#: 3 Class: II , IV Flagging: B/W, G/W C- Type: HCO

Concerns: blowdown

Buffer (RMA): Class II for HCO greater of 100 feet or to the top of the side-slope break. Class IV for HCO none.

Alternatives: 2, 3, and 5 Buffer (RAW): no review needed

Unit

Number 95 Alternatives 2, 3, 5

Summary of Concerns, Responses, BMPs and Mitigation

 INVASIVE SPECIES:

No Concerns
Unit 95

Protection: Category A and C 

Stream#: 2 Class: II , IV Flagging: B/W, G/W C- Type: HCO, HCL

Concerns: none

Buffer (RMA): Class II for HCO greater of 100 feet or to the top of the side-slope break. Class IV for HCL none.

Alternatives: 2, 3, and 5 Buffer (RAW): no review needed

Protection: Category A and C 

Stream#: 1 Class: I , IV Flagging: B/W, G/W C- Type: HCO

Concerns: none

Buffer (RMA): Class I for HCO greater of 100 feet or to the top of the side-slope break. Class IV for HCL none.

Alternatives: 2, 3, and 5 Buffer (RAW): no review needed

Protection: Category A and C 

 

Stream#: 1.1L Class: I , II, IV Flagging: B/W, G/W C- Type: MMO, HCO

Concerns: none

Buffer (RMA): Class I for MMO greater of 120 feet, flood plain, riparian vegetation or soils, or riparian associated wetland 

fens. Class II for HCO greater of 100 feet or to the top of the side-slope break. Class IV for HCO none.

Alternatives: 2, 3, and 5 Buffer (RAW): no review needed

Protection: Category A and C 

Stream#: 1.10L Class: I, II, III Flagging: B/W, O/W C- Type: MMO, HCL, AFH 

Concerns: active erosion

Buffer (RMA): Class I for MMO greater of 120 feet, flood plain, riparian vegetation or soils, or riparian associated wetland 

fens. Class II for HCL greater of 100 feet or to the top of the side-slope break. Class III for AFH greater of 140 feet or active 

portion of the alluvial fan. 

Alternatives: 2, 3, and 5 Buffer (RAW): Will be identified by IDT during layout.

Protection: Category A and B 

Stream#: 1.10.1L Class: II Flagging: B/W C- Type: MMO

Concerns: none

Buffer (RMA): Class II for MMO greater of 120 feet, flood plain, riparian vegetation or soils, or riparian associated wetland 

fens.

Alternatives: 2, 3, and 5 Buffer (RAW): no review needed

Protection: Category A 

Stream#: 1.10L.1L.1R Class: II Flagging: B/W C- Type: MMO

Concerns: none

Buffer (RMA): Class II for MMO greater of 120 feet, flood plain, riparian vegetation or soils, or riparian associated wetland 

fens.

Alternatives: 2, 3, and 5 Buffer (RAW): no review needed

Mitigation/Protection: Category A 

Stream#: 1.10L.2L Class: II Flagging: B/W C- Type: MMO

Concerns: none

Buffer (RMA): Class II for MMO greater of 120 feet, flood plain, riparian vegetation or soils, or riparian associated wetland 

fens.

Alternatives: 2, 3, and 5 Buffer (RAW): no review needed

Protection: Category A 

All other streams in unit: Class: IV Flagging: G/W C- Type: HC or MM

Buffer (RMA): none Buffer (RAW): no review needed

Protection: Category C

 GEOLOGY/KARST:

No Concerns

 HERITAGE RESOURCES:

This unit was investigated per the third amended interagency Programmatic Agreement (PA) for historic properties. As 

specified by the PA, any potential adverse effect on historic properties (if any) was mitigated and portions of the Area of 

Potential Effect will be monitored by a qualified heritage specialist during and/or after actual ground disturbance.

 SCENERY:
Unit 95

 SCENERY:

The Scenic Integrity Objective (SIO) for this unit is Very Low . It is entirely in Timber Production LUD and is considered Not 

Seen. There are no scenery resource concerns.

 RECREATION:

Southeastern corner of unit is adjacent to Thorne River inventoried roadless area.

 SOILS/WETLANDS:

Slopes range from about 18 to 80%. Approximately 10 acres were excluded due to steep slopes and high landslide potential. 

Approximately 6 acres of slopes greater than 72% remain in the unit after field verification. These steep slopes are suitable 

for harvest with a minimum of partial suspension. An older debris avalanche (pre-1972) and a more recent debris torrent 

(1988) define the southern border of the unit. The remaining soils and wetlands are suitable for a minimum partial 

suspension yarding or shovel yarding. All logging systems should follow BMPs 12.5, 13.2 and 13.9. Slopes over 25% 

gradient may not be suitable for shovel yarding under some soil moisture conditions. Use care when approving shovel 

yarding on slopes over 25% gradient. Avoid track slippage and rutting.

There is less than 1/4 acre of emergent short sedge/forested wetland complex located adjacent to the northeastern edge of 

the unit (BMP 12.5). The proposed temporary road does not traverse any mapped wetlands.

 WILDLIFE:

Unit includes average snow deer winter range (entire unit), some of which is also deep snow marten habitat/deer winter 

range (northern 1/2 of unit). Legacy standard and guideline does not apply in this VCU.

Alternative 4: Unit dropped to maintain a travel route between the Thorne River and IRA, and minimize road building in the 

North Thorne Drainage.
3015000

3016010

3015700

3015000

1

2

1.1L

1.10L.2L

1.10L.1L.1R

1.10L.1L

2

2

1.10L

2

1.10L

3

4

A1

218-1

1976

1979

1976

1976

91

95

96

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 095 Alternative 2 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Partial Cut

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

580

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt2.mxd 14 July 2012

RR

SR
3015000

3016010

3015700

3015000

1

2

1.1L

1.10L.2L

1.10L.1L.1R

1.10L.1L

2

2

1.10L

2

1.10L

3

4

A1

218-1

1976

1979

1976

1976

91

95

96

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 095 Alternative 3 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

580

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt3.mxd 14 July 2012

RR

SR
3015000

3016010

3015700

3015000

1

2

1.1L

1.10L.2L

1.10L.1L.1R

1.10L.1L

2

2

1.10L

2

1.10L

3

4

A1

218-1

1976

1979

1976

1976

91

95

96

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 095 Alternative 5 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Sytematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

580

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt5.mxd 14 July 2012

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Unit 96

Total Unit

Acres:

4.4 Prescription: Clearcut

VCU

Number:

580 Harvest

System:

Helicopter

Net Harvest

Volume

(MBF):

36

LUD:

Timber Production

 SILVICULTURE:

Existing Condition: This unit has old-growth stand structure with some small areas of uneven-age structure. Western 

hemlock and western redcedar make up the overstory. The dominant damage agents affecting overall tree health and 

volume are moderate stem deformity and stem decay. Mistletoe infection as a whole is light. Windthrow risk is moderate. 

Silvicultural Objective/Desired Condition: The desired condition for this stand is a highly productive, healthy, windfirm stand 

grown for timber management that retains residual trees as needed to meet standards and guides or other objectives. 

Silvicultural Prescription: Even-age Management - Clearcut 

This stand is being recommended for harvest at this time because it is not expected to obtain the desired condition given the 

current growth trajectory. This stand is mature with moderate stem decay and defect resulting in a situation where stand 

growth is being offset by decay. Even-aged clear cutting is being prescribed to preclude or minimize the risk of windthrow 

after harvest, promote natural regeneration by opening up the canopy, and minimize defect and disease in the future stand to 

the maximum extent possible.

 TIMBER/LOGGING:

This unit is planned for helicopter yarding to landings on existing NFS road 3015000.

 ENGINEERING/ROADS:

Reconstruction of existing NFS road 3015000, totaling 2100 feet, is required to allow access to the unit. See road card for 

details. This road is also used to access Units 95, 98, 100, 108, and 109

 BOTANY:

No Concerns

 FISHERIES:

Streams are tributaries to Thorne River. Stream A1 characteristics do not include project-specific, field-verified, information.

Stream#: 1.10L Class: III Flagging: O/W C- Type: HCL 

Concerns: active erosion

Buffer (RMA): Class III for HCL greater of 100 feet or to the top of the side-slope break

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed

Protection: Category B 

Stream#: A1 Class: III Flagging: O/W C- Type: HCM 

Concerns: none known

Buffer (RMA): Class III for HCM greater of 100 feet or to the top of the side-slope break

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed

Protection: Category B 

All other streams in unit: Class: IV Flagging: G/W C- Type: HC or MM

Buffer (RMA): none Buffer (RAW): no review needed

Protection: Category C

 GEOLOGY/KARST:

No Concerns

 HERITAGE RESOURCES:

Unit

Number 96 Alternatives 2, 3, 4, 5

Summary of Concerns, Responses, BMPs and Mitigation

 INVASIVE SPECIES:

No Concerns
Unit 96

This unit was investigated per the third amended interagency Programmatic Agreement (PA) for historic properties. As 

specified by the PA, any potential adverse effect on historic properties (if any) was mitigated and portions of the Area of 

Potential Effect will be monitored by a qualified heritage specialist during and/or after actual ground disturbance.

 SCENERY:

The Scenic Integrity Objective (SIO) for this unit is Very Low . It is entirely in Timber Production LUD and is considered Not 

Seen. There are no scenery resource concerns.

 RECREATION:

No concerns

 SOILS/WETLANDS:

Slopes range from about 30 to 80%. Approximately 6 acres were excluded due to very high mass movement index, steep 

slopes, brush fields, avalanche chutes and high landslide potential. Approximately 3 acres of slopes greater than 72% remain 

in the western part of the unit. These steep slopes are suitable for harvest with a minimum of partial suspension. No wetlands 

have been mapped in the unit. A minimum of partial suspension would meet soil and wetland resource concerns (BMPs 12.5, 

13.5, and 13.9).

 WILDLIFE:

Unit includes average snow deer winter range (entire unit). Legacy standard and guideline does not apply in this VCU.
3015000

3015000

1

2

1.1L

1.10L.2L

1.10L.1L.1R

1.10L.1L

2

2

1.10L

1.10L

3

4

A1

218-1

1979

1976

1976

91

95

96

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 096 Alternative 2 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Partial Cut

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

580

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt2.mxd 14 July 2012

RR

SR
3015000

3015000

1

2

1.1L

1.10L.2L

1.10L.1L.1R

1.10L.1L

2

2

1.10L

1.10L

3

4

A1

218-1

1979

1976

1976

91

95

96

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 096 Alternative 3 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

580

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt3.mxd 14 July 2012

RR

SR
3015000

3015000

1

2

1.1L

1.10L.2L

1.10L.1L.1R

1.10L.1L

2

2

1.10L

1.10L

3

4

A1

218-1

1979

1976

1976

91

96

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 096 Alternative 4 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

580

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt4.mxd 20 March 2012

RR

SR
3015000

3015000

1

2

1.1L

1.10L.2L

1.10L.1L.1R

1.10L.1L

2

2

1.10L

1.10L

3

4

A1

218-1

1979

1976

1976

91

95

96

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 096 Alternative 5 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Sytematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

580

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Unit 98

Total Unit

Acres:

5.5 Prescription: Clearcut

VCU

Number:

580 Harvest

System:

Shovel, Cable

Net Harvest

Volume

(MBF):

142

LUD:

Timber Production

 SILVICULTURE:

Existing Condition: This unit has old-growth stand structure with western redcedar, Alaska-cedar and lesser amounts of 

hemlock and Sitka spruce. The overstory has moderate stem decay with light mistletoe. Alaska-cedar decline is present in 

the stand in minor patches. Windthrow risk is moderate. All adjacent previous harvest areas have met green-up with 

regeneration over 5 foot tall and meet NFMA requirements for no longer being considered openings.

Silvicultural Objective/Desired Condition: The desired condition for this stand is a highly productive, healthy, windfirm stand 

grown for timber management that retains residual trees as needed to meet standards and guides or other objectives. 

Silvicultural Prescription: Even-age Management - Clearcut (Alternatives 2,3,5) 

This stand is being recommended for harvest at this time because it is not expected to obtain the desired condition given the 

current growth trajectory. This stand is mature to over-mature with moderate stem decay and defect resulting in a situation 

where stand growth is being offset or exceeded by decay. Even-aged clear cutting is being prescribed to preclude or 

minimize the risk of windthrow after harvest, promote natural regeneration by opening up the canopy, and minimize defect 

and disease in the future stand to the maximum extent possible.

 TIMBER/LOGGING:

This unit is planned for a combination of shovel and cable yarding. Cable settings are planned for downhill yarding to the 

existing NFS road 3015000. Shovel settings are planned for yarding to the existing NFS road 3015000.

 ENGINEERING/ROADS:

Reconstruction of existing NFS road 3015000, totaling 12,000 feet, is required to access the unit. See road card for details. 

This road is also used to access Units 95, 96, 100, 108, and 109

 BOTANY:

No Concerns

 FISHERIES:

Streams are tributaries to Thorne River. Stream 3.2L characteristics do not include project-specific, field-verified, information.

Stream#: 3 Class: II Flagging: B/W C- Type: HCL, HCO

Concerns: blowdown

Buffer (RMA): Class II for HCL and HCO greater of 100 feet or to the top of the side-slope break.

Alternatives: 2, 3, and 5 Buffer (RAW): no review needed 

Protection: Category A

Stream#: 3.2L Class: II Flagging: B/W C- Type: HCO

Concerns: none

Buffer (RMA): Class II for HCO greater of 100 feet or to the top of the side-slope break.

Alternatives: 2, 3, and 5 Buffer (RAW): no review needed

Protection: Category A 

Stream#: 3.1R Class: II, III, IV Flagging: B/W, O/W, G/W C- Type: HCO

Concerns: blowdown

Buffer (RMA): Class II and III for HCO greater of 100 feet or to the top of the side-slope break. Class IV for HCO none.

Alternatives: 2, 3, and 5 Buffer (RAW): no review needed 

Protection: Category A, B, and C 

All other streams in unit: Class: IV Flagging: G/W C- Type: HC or MM

Unit

Number 98 Alternatives 2, 3, 5

Summary of Concerns, Responses, BMPs and Mitigation

 INVASIVE SPECIES:

No Concerns
Unit 98

Buffer (RMA): none Buffer (RAW): no review needed

Protection: Category C

 GEOLOGY/KARST:

No Concerns

 HERITAGE RESOURCES:

This unit was investigated per the third amended interagency Programmatic Agreement (PA) for historic properties. As 

specified by the PA, any potential adverse effect on historic properties (if any) was mitigated and portions of the Area of 

Potential Effect will be monitored by a qualified heritage specialist during and/or after actual ground disturbance.

 SCENERY:

The Scenic Integrity Objective (SIO) for this unit is Very Low . It is entirely in Timber Production LUD and is considered Not 

Seen. There are no scenery resource concerns.

 RECREATION:

No concerns

 SOILS/WETLANDS:

Slopes average 45 to 55%. Forested wetlands are dominant. Full suspension is required in about 1.5 acres of the unit, west 

of the 3015000 road. In the remainder of the unit, the soils and wetlands are suitable for partial suspension cable yarding or 

shovel yarding. All logging systems should follow BMPs 12.5, 13.2 and 13.9. Slopes over 25% gradient may not be suitable 

for shovel yarding under some soil moisture conditions. Use care when approving shovel yarding on slopes over 25% 

gradient. Avoid track slippage and rutting.

 WILDLIFE:

Unit includes marten habitat. Legacy standard and guideline does not apply in this VCU.

Unit includes average snow deer winter range (entire unit). Legacy standard and guideline does not apply in this VCU.

Alternative 4: Unit dropped to help maintain connectivity between areas of past harvest in the North Thorne Drainage and 

minimize road building.
3015000

3015000

A2

1.3R.1R

2

3.1

3.1R.2R

R

1

3

3.2L

3

3.1R

A1

A1

1979

1976

1999

1999

1999

98

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 098 Alternative 2 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Partial Cut

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

580

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt2.mxd 14 July 2012

RR

SR
3015000

3015000

A2

1.3R.1R

2

3.1

3.1R.2R

R

1

3

3.2L

3

3.1R

A1

A1

1979

1976

1999

1999

1999

98

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 098 Alternative 3 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

580

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt3.mxd 14 July 2012

RR

SR
3015000

3015000

A2

1.3R.1R

2

3.1

3.1R.2R

R

1

3

3.2L

3

3.1R

A1

A1

1979

1976

1999

1999

1999

98

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 098 Alternative 5 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Sytematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

580

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt5.mxd 14 July 2012

RR

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Unit 100

Total Unit

Acres:

13.9 Prescription: Clearcut

VCU

Number:

580 Harvest

System:

Helicopter

Net Harvest

Volume

(MBF):

432

LUD:

Timber Production

 SILVICULTURE:

Existing Condition: This unit has old-growth stand structure. Mistletoe evidence was light. The overstory is mature to overmature and typically moderate defect with stem decay resulting in most defect deductions. Windthrow risk is moderate. All 

previous harvest areas in the vicinity of the unit have met green-up with regeneration over 5 foot tall and meet NFMA 

requirements for no longer being considered openings.

Silvicultural Objective/Desired Condition: The desired condition for this stand is a highly productive, healthy, windfirm stand 

grown for timber management that retains residual trees as needed to meet standards and guides or other objectives. 

Silvicultural Prescription: Even-age Management - Clearcut

This stand is being recommended for harvest at this time because it is not expected to obtain the desired condition given the 

current growth trajectory. This stand is mature to over-mature with moderate to high stem decay and defect resulting in a 

situation where stand growth is being offset or exceeded by decay. Even-aged clear cutting is being prescribed to preclude or 

minimize the risk of windthrow after harvest, promote natural regeneration by opening up the canopy, and minimize defect 

and disease in the future stand to the maximum extent possible.

 TIMBER/LOGGING:

This unit is planned for helicopter yarding to landings on existing NFS road 3015000.

 ENGINEERING/ROADS:

Reconstruction of existing NFS road 3015000, totaling 12,000 feet, is required to allow access to the unit. See road card for 

details. This road is also used to access Units 95, 96, 98, 108, and 109

 BOTANY:

No Concerns

 FISHERIES:

Streams are tributaries to Thorne River. 

Stream#: 2 Class: III , IV Flagging: O/W, G/W C- Type: HCD, HCO

Concerns: none

Buffer (RMA): Class III for HCD to the top of the side-slope break. Class IV for HCO none.

Alternatives: 2, 3, and 5 Buffer (RAW): no review needed

Protection: Category B and C 

Stream#: 3 Class: III , IV Flagging: O/W, G/W C- Type: HCM, HCO 

Concerns: none

Buffer (RMA): Class III for HCM to the top of the side-slope break. Class IV for HCO none.

Alternatives: 2, 3, and 5 Buffer (RAW): no review needed

Protection: Category B and C 

Stream#: 1.1L Class: III Flagging: O/W C- Type: HCV, HCM

Concerns: blowdown

Buffer (RMA): Class III for HCV and HCM to the top of the side-slope break.

Alternatives: 2, 3, and 5 Buffer (RAW): Will be identified by IDT during layout.

Protection: Category B 

Stream#: 1 Class: III Flagging: O/W C- Type: HCV, HCM

Concerns: blowdown

Unit

Number 100 Alternatives 2, 3, 5

Summary of Concerns, Responses, BMPs and Mitigation

 INVASIVE SPECIES:

No Concerns
Unit 100

Buffer (RMA): Class III for HCV and HCM to the top of the side-slope break

Alternatives: 2, 3, and 5 Buffer (RAW): Will be identified by IDT during layout.

Protection: Category B 

Stream#: 1.1LB Class: III, IV Flagging: O/W, G/W C- Type: HCM

Concerns: blowdown

Buffer (RMA): Class III for HCM to the top of the side-slope break. Class IV for HCM none.

Alternatives: 2, 3, and 5 Buffer (RAW): no review needed.

Protection: Category B and C 

All other streams in unit: Class: IV Flagging: G/W C- Type: HC or MM

Buffer (RMA): none Buffer (RAW): no review needed

Protection: Category C

 GEOLOGY/KARST:

No Concerns

 HERITAGE RESOURCES:

This unit was investigated per the third amended interagency Programmatic Agreement (PA) for historic properties. As 

specified by the PA, any potential adverse effect on historic properties (if any) was mitigated and portions of the Area of 

Potential Effect will be monitored by a qualified heritage specialist during and/or after actual ground disturbance.

 SCENERY:

The Scenic Integrity Objective (SIO) for this unit is Very Low . It is entirely in Timber Production LUD and is considered Not 

Seen. There are no scenery resource concerns.

 RECREATION:

Northwestern border of unit is adjacent to the Thorne River inventoried roadless area.

 SOILS/WETLANDS:

Slopes range from about 20 to 70%. No wetlands were identified in the unit. Approximately 7.5 acres were excluded due to 

cliffs, avalanche chutes, and high landslide potential. A minimum of partial suspension would meet soil and wetland resource 

concerns (BMPs 12.5, 13.5, and 13.9).

 WILDLIFE:

Unit includes average snow deer winter range (entire unit), some of which is also deep snow marten habitat/deer winter 

range (very southern part of northern piece). Legacy standard and guideline does not apply in this VCU.

Alternative 4: Unit dropped to maintain deer winter range and marten habitat and connectivity between areas of past harvest 

in the North Thorne Drainage and minimize road building/reconstruction.
3015000

1.2R

2.1L

1.1LB

1.1R.1R

1

1.2L

2

1.1R

3

2

1

3

1.1L.2L

1.1R

1.1L.1 L

1.3L

1.1L

A1

A1

1

1974

1976

100

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 100 Alternative 2 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Partial Cut

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

580

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt2.mxd 14 July 2012

RR

SR
3015000

1.2R

2.1L

1.1LB

1.1R.1R

1

1.2L

2

1.1R

3

2

1

3

1.1L.2L

1.1R

1.1L.1 L

1.3L

1.1L

A1

A1

1

1974

1976

100

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 100 Alternative 3 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

580

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt3.mxd 14 July 2012

RR

SR
3015000

1.2R

2.1L

1.1LB

1.1R.1R

1

1.2L

2

1.1R

3

2

1

3

1.1L.2L

1.1R

1.1L.1 L

1.3L

1.1L

A1

A1

1

1974

1976

100

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 100 Alternative 5 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Sytematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

580

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt5.mxd 14 July 2012

RR

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Unit 104

Total Unit

Acres:

54.2 Prescription: 2, 3, 5 - Clearcut

4 - 50% Removal

VCU

Number:

580 Harvest

System:

Helicopter

Net Harvest

Volume

(MBF):

2, 3, 5 - 927

4 - 464 LUD:

Timber Production

 SILVICULTURE:

Existing Condition: Old-growth stand structure with moderate defect. Stem rots and stem form results in most volume 

deductions. Mistletoe was not noted in the stand. Windthrow risk is moderate. All previous harvest areas adjacent to or near 

this unit have met green-up with regeneration over 5 foot tall and meets NFMA requirements for no longer being considered 

an opening.

Silvicultural Objective/Desired Condition: The desired condition for this stand is a highly productive, healthy, windfirm, stand 

grown for timber management that retains residual trees as needed to meet standards and guides or other objectives.

Silvicultural Prescription: Even-age Management (Alternatives 2, 3, 5)

This stand is being recommended for harvest at this time because it is not expected to obtain the desired condition given the 

current growth trajectory. This stand is mature with moderate stem decay and defect resulting in a situation where stand 

growth is being offset by decay. Even-aged clear cutting is being prescribed to preclude or minimize the risk of windthrow 

after harvest, promote natural regeneration by opening up the canopy, and minimize defect and disease in the future stand to 

the maximum extent possible. 

 

Silvicultural Prescription: Uneven-age Management Single Tree Selection (Alternative 4)

Maintain at least 50 percent of the setting pretreatment basal area, based on standing live tree total for the unit, uncut. 

Individual trees selected for harvest may occur in small groups but will generally be evenly distributed across the stand. Any 

small groups will usually be less than one acre but may occasionally go up to two acres in size where needed to address 

insect and disease issues or capitalize on existing advanced regeneration of desirable tree species. Trees selected for 

harvest will generally be well distributed and no large openings will occur as a result of the harvest. Review the marking 

guides and silvicultural prescription for more detailed information and direction regarding how to implement this prescription. 

The uneven-aged single tree selection regeneration method is being prescribed for this unit in Alternative 4 specifically to 

maintain intact diverse structure for wildlife needed at this time and place in the landscape to meet the objectives of this 

alternative. This system is not optimum for promoting timber production but is being prescribed primarily to mitigate the 

overall effects of the project on wildlife.

 TIMBER/LOGGING:

This unit is planned for helicopter yarding to landings on existing NFS road 3015000.

 ENGINEERING/ROADS:

 No proposed road construction

 BOTANY:

No Concerns

 FISHERIES:

Unit

Number 104 Alternatives 2, 3, 4, 5

Summary of Concerns, Responses, BMPs and Mitigation

 INVASIVE SPECIES:

No Concerns
Unit 104

Streams are tributaries to Thorne River.

Stream#: 1 Class: III, IV Flagging: O/W, G/W C- Type: HCM, HCO

Concerns: none

Buffer (RMA): Class III for HCM to the top of the side-slope break. Class IV for HCO none.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed

Protection: Category B and C 

Stream#: 4 Class: III Flagging: O/W C- Type: HCM

Concerns: blowdown and active erosion

Buffer (RMA): Class III for HCM to the top of the side-slope break.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): Will be identified by IDT during layout.

Protection: Category B 

Stream#: 5 Class: III, IV Flagging: O/W, G/W C- Type: HCM, HCO

Concerns: blowdown and active erosion

Buffer (RMA): Class III for HCM to the top of the side-slope break. Class IV for HCO none.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): Will be identified by IDT during layout.

Protection: Category B and C 

Stream#: 6 Class: III Flagging: O/W C- Type: HCM

Concerns: blowdown and active erosion

Buffer (RMA): Class III for HCM to the top of the side-slope break.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): Will be identified by IDT during layout.

Protection: Category B 

Stream#: 8 Class: III Flagging: O/W C- Type: HCM

Concerns: blowdown and active erosion

Buffer (RMA): Class III for HCM to the top of the side-slope break.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): Will be identified by IDT during layout.

Protection: Category B 

Stream#: 8.1L Class: III Flagging: O/W C- Type: HCM

Concerns: blowdown and active erosion

Buffer (RMA): Class III for HCM to the side-slope break.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): Will be identified by IDT during layout.

Protection: Category B 

Stream#: 9 Class: III Flagging: O/W C- Type: HCM

Concerns: blowdown and active erosion

Buffer (RMA): Class III for HCM to the top of the side-slope break.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): Will be identified by IDT during layout.

Protection: Category B 

Stream#: 12 Class: III Flagging: O/W C- Type: HCM

Concerns: Blowdown and active erosion.

Buffer (RMA): Class III for HCM to the top of the side-slope break.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): Will be identified by IDT during layout.

Protection: Category B 

All other streams in unit: Class: IV Flagging: G/W C- Type: HC

Buffer (RMA): none Buffer (RAW): no review needed

Protection: Category C

 GEOLOGY/KARST:

No Concerns

 HERITAGE RESOURCES:

This unit was investigated per the third amended interagency Programmatic Agreement (PA) for historic properties. As 

specified by the PA, any potential adverse effect on historic properties (if any) was mitigated and portions of the Area of 

Potential Effect will be monitored by a qualified heritage specialist during and/or after actual ground disturbance.

 SCENERY:
Unit 104

The Scenic Integrity Objective (SIO) for this unit is Very Low . It is entirely in Timber Production LUD and is considered Not 

Seen. There are no scenery resource concerns.

 RECREATION:

Thorne River inventoried roadless area is adjacent to northeastern boundary of unit.

 SOILS/WETLANDS:

Slopes range from about 45 to 65%. No wetlands have been mapped in the unit. Approximately 6 acres were excluded due 

to very high landslide potential, active and historic landslides, colluvial activity, steep wet slopes, and unstable drainages. 

The remainder of the unit requires full suspension to meet soil and wetland resource concerns (BMPs 12.5, 13.5, and 13.9) 

and requiring partial harvest in all alternatives is still being evaluated. Two debris torrents/avalanches have been removed 

from the unit. One debris torrent remains in the southern part of the unit; it is occupies less than 2 acres of the unit, is marked 

by alders and can be operated around.

 WILDLIFE:

Unit includes average snow deer winter range (entire unit), some of which is also deep snow marten habitat/deer winter 

range (two western lobes of unit). Legacy standard and guideline does not apply in this VCU.

Alternative 4 : Prescription is 50% basal area removal to maintain deer winter range and marten habitat, and maintain other 

habitat values.

Old-growth Reserve (OGR) Boundary:

Unit is near Honker large OGR complex.

Alternatives 2, 4, and 5: Current OGR boundary adjacent to southern boundary of unit. 

Alternative 3: OGR boundary moved to the northeast, and is adjacent to eastern boundary of unit.
3015000

1

21

10

2 5

8.1L

22

8

2

6

9

A2.2L

20

1

1.3L

1

5

1.1L.2R

24.1R

5.1R

5

14

7

11

27

1

6.1L

3

4.1 R

2 6

4

24

13

12

BRAID

1987

1976

1976

1980

94

104

104

104

105

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 104 Alternative 2 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Partial Cut

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

580

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt2.mxd 14 July 2012

RR

SR
3015000

20

2 5

8.1L

8

2

11

6

9

1

A2.2L

1

1.3L

1

5

1.1L.2R

24.1R

5.1R

5

14

22

7

27

1

6.1L

3

4.1 R

2 6

4

24

13

12

BRAID

21

1 0

1987

1976

1980

1976

104

105

440

94

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 104 Alternative 3 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

580

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt3.mxd 14 July 2012

RR

SR
3015000

1

21

10

2 5

8.1L

22

8

2

6

9

A2.2L

20

1

1.3L

1

5

1.1L.2R

24.1R

5.1R

5

14

7

11

27

1

6.1L

3

4.1 R

2 6

4

24

13

12

BRAID

1987

1976

1976

1980

94

104

104

104

105

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 104 Alternative 4 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

580

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt4.mxd 20 March 2012

RR

SR
3015000

1

21

10

2 5

8.1L

22

8

2

6

9

A2.2L

20

1

1.3L

1

5

1.1L.2R

24.1R

5.1R

5

14

7

11

27

1

6.1L

3

4.1 R

2 6

4

24

13

12

BRAID

1987

1976

1976

1980

94

104

104

104

105

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 104 Alternative 5 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Sytematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

580

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt5.mxd 14 July 2012

RR

SR
Unit 105

Total Unit

Acres:

25.9 Prescription: 2, 3, 5 - Clearcut

4 - 50% Removal

VCU

Number:

580 Harvest

System:

Helicopter

Net Harvest

Volume

(MBF):

2, 3, 5 - 711

4 - 356 LUD:

Timber Production

 SILVICULTURE:

Existing Condition: Old-growth stand structure with western redcedar, western hemlock, Sitka spruce and Alaska-cedar. 

Moderate defect with stem rots and stem form results in most volume deductions. Mistletoe was not noted in the stand. An 

area in the northern 1/3 of the unit had less defect and clean younger appearing timber with good form and diameter. 

Windthrow risk is moderate. All previous harvest areas adjacent to or near this unit have met green-up with regeneration over 

5 feet tall. This meets NFMA requirements for no longer being considered an opening.

Silvicultural Objective/Desired Condition: The desired condition for this stand is a highly productive, healthy, windfirm stand 

grown for timber management that retains residual trees as needed to meet standards and guides or other objectives

Silvicultural Prescription: Even-age Management (Alternatives 2, 3, 5)

This stand is being recommended for harvest at this time because it is not expected to obtain the desired condition given the 

current growth trajectory. This stand is mature with moderate stem decay and defect resulting in a situation where stand 

growth is being offset by decay. Even-aged clear cutting is being prescribed to preclude or minimize the risk of windthrow 

after harvest, promote natural regeneration by opening up the canopy, and minimize defect and disease in the future stand to 

the maximum extent possible. 

 

Silvicultural Prescription: Uneven-age Management Single Tree Selection (Alternative 4)

Maintain at least 50 percent of the setting pretreatment basal area, based on standing live tree total for the unit, uncut. 

Individual trees selected for harvest may occur in small groups but will generally be evenly distributed across the stand. Any 

small groups will usually be less than one acre but may occasionally go up to two acres in size where needed to address 

insect and disease issues or capitalize on existing advanced regeneration of desirable tree species. Trees selected for 

harvest will generally be well distributed and no large openings will occur as a result of the harvest. Review the marking 

guides and silvicultural prescription for more detailed information and direction regarding how to implement this prescription. 

The uneven-aged single tree selection regeneration method is being prescribed for this unit in Alternative 4 specifically to 

maintain intact diverse structure for wildlife needed at this time and place in the landscape to meet the objectives of this 

alternative. This system is not optimum for promoting timber production but is being prescribed primarily to mitigate the 

overall effects of the project on wildlife.

 TIMBER/LOGGING:

This unit is planned for helicopter yarding to landings on existing NFS road 3015000 in all alternatives, and existing NFS road 

3015700 in Alternatives 2, 3, and 4.

 ENGINEERING/ROADS:

 No proposed road construction.

 BOTANY:

No Concerns

 FISHERIES:

Unit

Number 105 Alternatives 2, 3, 4, 5

Summary of Concerns, Responses, BMPs and Mitigation

 INVASIVE SPECIES:

No Concerns
Unit 105

Streams are tributaries to Thorne River. Stream A1 characteristics do not include project-specific, field-verified, information.

Stream#: 12 Class: III Flagging: O/W C- Type: HCM

Concerns: blowdown and active erosion

Buffer (RMA): Class III for HCM to the top of the side-slope break.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): Will be identified by IDT during layout.

Protection: Category B 

Stream#: 31 Class: III, IV Flagging: O/W, G/W C- Type: HCL, HCO

Concerns: blowdown 

Buffer (RMA): Class III for HCL to the top of the side-slope break. Class IV for HCO

Alternatives: 2, 3, 4, and 5 Buffer (RAW): Will be identified by IDT during layout. 

Protection: Category B and C 

Stream#: A1 Class: II, III Flagging: B/W, O/W C- Type: AFM, HCL, HCM

Concerns: blowdown 

Buffer (RMA): Class II for AFM greater of 140 feet or active portion of alluvial fan. Class III for HCL and HCM to the top of 

the side-slope break. 

Alternatives: 2, 3, 4, and 5 Buffer (RAW): Will be identified by IDT during layout. 

Protection: Category A and B 

All other streams in unit: Class: IV Flagging: G/W C- Type: HC or MM

Buffer (RMA): none Buffer (RAW): no review needed.

Protection: Category C

 GEOLOGY/KARST:

No Concerns

 HERITAGE RESOURCES:

This unit was investigated per the third amended interagency Programmatic Agreement (PA) for historic properties. As 

specified by the PA, any potential adverse effect on historic properties (if any) was mitigated and portions of the Area of 

Potential Effect will be monitored by a qualified heritage specialist during and/or after actual ground disturbance.

 SCENERY:

The Scenic Integrity Objective (SIO) for this unit is Very Low . It is entirely in Timber Production LUD and is considered Not 

Seen. There are no scenery resource concerns.

 RECREATION:

Roadless area is adjacent to eastern boundary of unit

 SOILS/WETLANDS:

Slopes range from about 24 to 65%. No wetlands have been mapped in the unit. Full suspension is required to meet soil and 

wetland resource concerns (BMPs 12.5, 13.5, and 13.9); unit is being evaluated and may be changed to partial harvest in all 

alternatives.

 WILDLIFE:

Unit includes average snow deer winter range (entire unit), some of which is also deep snow marten habitat/deer winter 

range (western 3/4 of unit). Unit is near Honker large OGR complex. Legacy standard and guideline does not apply in this 

VCU.

Alternative 4 : Prescription is 50% basal area removal to maintain deer winter range and marten habitat, and other habitat 

values.

Old-growth Reserve (OGR) Boundary

Alternatives 2, 4, and 5: Current OGR boundary is not adjacent to unit. 

Alternative 3: OGR boundary moved to the northeast, and is adjacent to eastern boundary of unit.
3015000

3015700

3015700

14

8

2

9

10

31

13

32.4R

A1

8.1L

5

30

6

3

32.5R

21

6.1L

32.2R

1 2

11

31

1

5

2.1R

32.3R

7

2

32.1R

1976

1976

1976

1987

1976

104

105

106

106

104

107

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 105 Alternative 2 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Partial Cut

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

580

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt2.mxd 14 July 2012

RR

SR
3015700

3015000

3015700

8

2

9

8.1L

10

13

32.4R

A1

5

30

6

3

32.5R

21

6.1L

32.2R

31

11

31

1

5

2.1R

32.3R

7

2

32.1R

1 2

14

1976

1976

1987

1976

1976

105

106

107

104

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 105 Alternative 3 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

580

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt3.mxd 14 July 2012

RR

SR
3015700

3015000

3015700

8

2

9

8.1L

10

13

32.4R

A1

5

30

6

3

32.5R

21

6.1L

32.2R

31

11

31

1

5

2.1R

32.3R

7

2

32.1R

1 2

14

1976

1976

1987

1976

1976

104

105

107

104

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 105 Alternative 4 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

580

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt4.mxd 20 March 2012

RR

SR
3015000

3015700

32.2R

32.1R

1 2

14

8

2

9

8.1L

10

13

32.4R

5

30

6

3

32.5R

21

6.1L

A1

31

11

31

1

5

2.1R

32.3R

7

2

1976

1976

1987

1976

1976

104

105

106

107 106

104

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 105 Alternative 5 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Sytematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

580

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt5.mxd 14 July 2012

RR

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Unit 106

Total Unit

Acres:

18.3 Prescription: Clearcut

VCU

Number:

580 Harvest

System:

Helicopter

Net Harvest

Volume

(MBF):

385

LUD:

Timber Production

 SILVICULTURE:

Existing Condition: This unit has old-growth stand structure. Overstory is generally a patchy distribution of western redcedar, 

Alaska-cedar and western hemlock with scattered Sitka spruce. Overstory is typically moderate defect with stem rot, broken 

tops and mistletoe infections being of concern. Mistletoe rating was moderate over most of the unit.. Blowdown is affecting 

overall stand structure, breaking up the continuity of the canopy. Windthrow risk is high. All previous harvest areas adjacent 

to or near this unit have met green-up with regeneration over 5 feet tall. This meets NFMA requirements for no longer being 

considered an opening.

Silvicultural Objective/Desired Condition: The desired condition for this stand is a highly productive, healthy, windfirm stand 

grown for timber management that retains residual trees as needed to meet standards and guides or other objectives.

Silvicultural Prescription: Even-age Management

This stand is being recommended for harvest at this time because it is not expected to obtain the desired condition given the 

current growth trajectory. This stand is mature with moderate stem decay and defect resulting in a situation where stand 

growth is being offset by decay. Even-aged clear cutting is being prescribed to preclude or minimize the risk of windthrow 

after harvest, promote natural regeneration by opening up the canopy, and minimize defect and disease in the future stand to 

the maximum extent possible.

 TIMBER/LOGGING:

This unit is planned for helicopter yarding to landings on existing NFS road 3015000.

 ENGINEERING/ROADS:

Reconstruction of existing NFS road 3015700, totaling 2,600 feet, is required to provide access to this unit. See road card for 

detailed information. This road is also used to provide access to Unit 107.

 BOTANY:

No Concerns

 FISHERIES:

Streams are tributaries to Thorne River. 

Stream#: 2 Class: I, II, IV Flagging: B/W, G/W C- Type: AFH, HCO

Concerns: none

Buffer (RMA): Class I for AFH greater of 140 feet or the active portion of the alluvial fan. Class II for HCO greater of 100 feet 

or to the top of the side-slope break. Class IV for HCO none.

Alternatives: 2, 3, and 5 Buffer (RAW): no review needed

Protection: Category A and C

Stream#: 5 Class: III Flagging: O/W C- Type: HCM

Concerns: blowdown and active erosion

Buffer (RMA): Class III for HCM to the top of the side-slope break.

Alternatives: 2, 3, and 5 Buffer (RAW): Will be identified by IDT during layout.

Protection: Category B

All other streams in unit: Class: IV Flagging: G/W C- Type: HC or MM

Buffer (RMA): none Buffer (RAW): no review needed

Protection: Category C

 GEOLOGY/KARST:

Unit

Number 106 Alternatives 2, 3, 5

Summary of Concerns, Responses, BMPs and Mitigation

 INVASIVE SPECIES:

No Concerns
Unit 106

No Concerns

 HERITAGE RESOURCES:

This unit was investigated per the third amended interagency Programmatic Agreement (PA) for historic properties. As 

specified by the PA, any potential adverse effect on historic properties (if any) was mitigated and portions of the Area of 

Potential Effect will be monitored by a qualified heritage specialist during and/or after actual ground disturbance.

 SCENERY:

The Scenic Integrity Objective (SIO) for this unit is Very Low . It is entirely in Timber Production LUD and is considered Not 

Seen. There are no scenery resource concerns.

 RECREATION:

Thorne River inventoried roadless area is adjacent to eastern boundary of unit.

 SOILS/WETLANDS:

Slopes range from about 35 to 55%. Approximately 150 acres were removed from the unit due to very high landslide 

potential, active and historic landslides, colluvial activity, steep slopes, and unstable drainages; most of these acres were 

also removed due to roadless. Forest wetland areas are located in the upper elevations near the subalpine, outside of the 

remaining unit. In the remaining unit, full suspension is required to meet soil and wetland resource concerns (BMPs 12.5, 

13.5, and 13.9). Unit is under evaluation and may be changed to partial harvest.

 WILDLIFE:

Unit includes average snow deer winter range (entire unit), some of which is also deep snow marten habitat/deer winter 

range (central 1/3 of unit). Legacy standard and guideline does not apply in this VCU.

Alternative 4: Unit dropped to maintain deer winter range and marten habitat, and other habitat values.

Old-growth Reserve (OGR) Boundary

Alternatives 2, 4, and 5: Current OGR boundary is not adjacent to unit.

Alternative 3: OGR boundary moved to the northeast, and is adjacent to eastern boundary of unit.
3015700

3015700

32.4R

10

32.3R

13

4

2

32.1R

2

7

14

3

31

8

A1

32.2R

32.5R

31

1

11

12

5

2.1R

9

5 1976

1976

1987

1976

1987

106

106

107

107

105

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 106 Alternative 2 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Partial Cut

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

580

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt2.mxd 14 July 2012

RR

SR
3015700

3015700

32.3R

13

4

2

32.1R

2

7

14

3

31

8

A1

32.2R

32.5R

31

1

11

12

5

2.1R

9

5

32.4R

10

1976

1976

1987

1976

1987

106

107

105

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 106 Alternative 3 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

580

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt3.mxd 14 July 2012

RR

SR
3015700

32.5R

5

32.4R

10

32.3R

13

4

2

32.1R

7

14

3

31

8

A1

2

32.2R

31

1

11

12

5

2.1R

9

1976

1976

1987

1976

1987

106

106

107

107

105

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 106 Alternative 5 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Sytematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

580

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt5.mxd 14 July 2012

RR

SR
Unit 107

Total Unit

Acres:

11.3 Prescription: Clearcut

VCU

Number:

580 Harvest

System:

Helicopter

Net Harvest

Volume

(MBF):

314

LUD:

Timber Production

 SILVICULTURE:

Existing Condition: This unit has old-growth stand structure. The overstory is typically moderate defect with stem rot, broken 

tops and mistletoe infections being of concern. Mistletoe rating was moderate over most of the unit. Blowdown is affecting 

overall stand structure, breaking up the continuity of the canopy. Windthrow risk is high. All previous harvest areas adjacent 

to or near this unit have met green-up with regeneration over 5 feet tall. This meets NFMA requirements for no longer being 

considered openings.

Silvicultural Objective/Desired Condition: The desired condition for this stand is a highly productive, healthy, windfirm stand 

grown for timber management that retains residual trees as needed to meet standards and guides or other objectives

Silvicultural Prescription: Even-age Management

This stand is being recommended for harvest at this time because it is not expected to obtain the desired condition given the 

current growth trajectory. This stand is mature with moderate stem decay and defect resulting in a situation where stand 

growth is being offset by decay. Even-aged clear cutting is being prescribed to preclude or minimize the risk of windthrow 

after harvest, promote natural regeneration by opening up the canopy, and minimize defect and disease in the future stand to 

the maximum extent possible.

 TIMBER/LOGGING:

This unit is planned for helicopter yarding to landings on existing NFS road 3015700 in Alternatives 2, 3, and 4. Landings 

would be on existing NFS road 3015000 in Alternative 5.

 ENGINEERING/ROADS:

Reconstruction of existing NFS road 3015700 in Alternatives 2, 3, and 4, totaling 2,600 feet, is required to provide access to 

this unit in Alternatives 2, 3, and 4. See road card for detailed information. This road is also used to provide access to Unit 

106.

Reconstruction of about 4,500 feet of existing NFS road 3015000 is required in Alternative 5. This road is also used to 

access other units.

 BOTANY:

No Concerns

 FISHERIES:

Streams are tributaries to Thorne River. 

Stream#: 5 Class: III Flagging: O/W C- Type: HCM

Concerns: blowdown and active erosion

Buffer (RMA): Class III for HCM to the top of the side-slope break.

Alternatives: 2, 3, 4, and 5		 Buffer (RAW): Will be identified by IDT during layout.

Protection: Category B 

Stream#: 8 Class: I, II , IV Flagging: B/W, G/W C- Type: AFH, HCL

Concerns: blowdown and active erosion

Buffer (RMA): Class II for AFH greater of 120 feet, flood plain, riparian vegetation or soils, or riparian associated wetland 

fens. Class II for HCO greater of 100 feet or to the top of the side-slope break. Class IV for HCL none. 

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed

Protection: Category A and C

Stream#: 9 Class: I, II , IV Flagging: B/W, G/W C- Type: AFH, HCL

Concerns: blowdown and active erosion

Unit

Number 107 Alternatives 2, 3, 4, 5

Summary of Concerns, Responses, BMPs and Mitigation

 INVASIVE SPECIES:

No Concerns
Unit 107

Buffer (RMA): Class II for AFH greater of 120 feet, flood plain, riparian vegetation or soils, or riparian associated wetland 

fens. Class IV for HCL none. 

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed

Protection: Category A and C 

Stream#: 11 Class: I, II , IV Flagging: B/W, G/W C- Type: AFH, HCO

Concerns: blowdown and active erosion

Buffer (RMA): Class II for AFH greater of 120 feet, flood plain, riparian vegetation or soils, or riparian associated wetland 

fens. Class IV for HCO none. 

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed

Protection: Category A and C

Stream#: 12 Class: I, II , IV Flagging: B/W, G/W C- Type: AFH, HCL

Concerns: blowdown and active erosion

Buffer (RMA): Class II for AFH greater of 120 feet, flood plain, riparian vegetation or soils, or riparian associated wetland 

fens. Class IV for HCL none. 

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed

Protection: Category A and C 

Stream#: 13 Class: I, II , IV Flagging: B/W, G/W C- Type: AFH, HCO

Concerns: blowdown and active erosion

Buffer (RMA): Class II for AFH greater of 120 feet, flood plain, riparian vegetation or soils, or riparian associated wetland 

fens. Class IV for HCO none. 

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed

Protection: Category A and C 

Stream#: 14 Class: III , IV Flagging: O/W, G/W C- Type: HCM, HCL

Concerns: Blowdown and active erosion

Buffer (RMA): Class II for HCM greater of 100 feet or to the top of the side-slope break. Class IV for HCL none. 

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed

Protection: Category B and C 

Stream#: 7 Class: III Flagging: O/W C- Type: HCM

Concerns: blowdown and active erosion

Buffer (RMA): Class III for HCM to the top of the side-slope break.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed

Protection: Category B 

Stream#: 229-12 Class: III Flagging: O/W C- Type: HCM

Concerns: blowdown

Buffer (RMA): Class III for HCM to the side-slope break.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed 

Protection: Category B 

Stream#: 229-10 Class: III, IV Flagging: O/W, G/W C- Type: HCM, HCO

Concerns: blowdown and active erosion

Buffer (RMA): Class III for HCM to the top of the side-slope break. Class IV for HCO none.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed 

Protection: Category B and C 

All other streams in unit: Class: IV Flagging: G/W C- Type: HC

Buffer (RMA): none Buffer (RAW): no review needed

Protection: Category C

 GEOLOGY/KARST:

No Concerns

 HERITAGE RESOURCES:

This unit was investigated per the third amended interagency Programmatic Agreement (PA) for historic properties. As 

specified by the PA, any potential adverse effect on historic properties (if any) was mitigated and portions of the Area of 

Potential Effect will be monitored by a qualified heritage specialist during and/or after actual ground disturbance.

 SCENERY:
Unit 107

The Scenic Integrity Objective (SIO) for this unit is Very Low . It is entirely in Timber Production LUD and is considered Not 

Seen. There are no scenery resource concerns.

 RECREATION:

Northeastern boundary is adjacent to Thorne River inventoried roadless area.

 SOILS/WETLANDS:

Slopes range from about 35 to 55%. Approximately 150 acres were removed from the original unit due to very high landslide 

potential, active and historic landslides, colluvial activity, steep slopes, and unstable drainages. There is a partially 

revegetated debris torrent near the center of the unit occupying less that 1/2 acre that can be operated around. Forest 

wetland areas are located in the upper elevations near the sub-alpine, outside of the remaining unit. In the remaining unit, full 

suspension is required to meet soil and wetland resource concerns (BMPs 12.5, 13.5, and 13.9); unit is being evaluated and 

partial harvest may be required.

 WILDLIFE:

Unit includes average snow deer winter range (entire unit). Legacy standard and guideline does not apply in this VCU.

Old-growth Reserve (OGR) Boundary

Alternatives 2, 4, and 5: Current OGR boundary is not adjacent to unit.

Alternative 3: OGR boundary moved to the northeast, and is adjacent to eastern boundary of unit.
3015700

3015000

7

229-10

229-12

A1

11

12

9

5

10

13

4

5

2

6

A3

229-11

1

14

8

1976

1979

1976

1976

1987

1986

1976 106

107

107

107

108

106

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 107 Alternative 2 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Partial Cut

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

580

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt2.mxd 14 July 2012

RR

SR
3015700

3015000

5

2

6

A3

7

1

14

8

229-10

229-12

A1

11

12

9

5

10

13

4

229-11

1976

1979

1976

1976

1987

1976

1986

106

107

108

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 107 Alternative 3 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

580

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt3.mxd 14 July 2012

RR

SR
3015700

3015000

5

2

6

A3

7

1

14

8

229-10

229-12

A1

11

12

9

5

10

13

4

229-11

1976

1979

1976

1976

1987

1976

1986

107

107

107

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 107 Alternative 4 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

580

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt4.mxd 20 March 2012

RR

SR
3015700

3015000

7

229-10

229-12

A1

11

12

9

5

10

13

4

5

2

6

A3

229-11

1

14

8

1976

1979

1976

1976

1987

1986

1976 106

107

107

107

108

106

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 107 Alternative 5 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Sytematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

580

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt5.mxd 14 July 2012

RR

SR
Unit 108

Total Unit

Acres:

24.7 Prescription: Clearcut

VCU

Number:

580 Harvest

System:

Helicopter

Net Harvest

Volume

(MBF):

431

LUD:

Timber Production

 SILVICULTURE:

Existing Condition: This unit has old-growth stand structure. The overstory consists primarily of mature western hemlock 

along with scattered Alaska-cedar and western redcedar. Mountain hemlock is present especially in the higher elevations. 

Sitka spruce is scattered to patchy throughout. The main damage agent affecting overstory tree health and volume loss is 

stem decay and bole cracks which are typical in high elevation stands such as this. Overall the stand has patchy timber 

values in a low volume matrix. There is some spotty Alaska-cedar decline reported with dead stems in medium diameter 

classes. Windthrow risk is moderate. All previous harvest areas adjacent to or near this unit have met green-up with 

regeneration over 5 feet tall. This meets NFMA requirements for no longer being considered openings.

Silvicultural Objective/Desired Condition: The desired condition for this stand is a highly productive, healthy, windfirm stand 

grown for timber management that retains residual trees as needed to meet standards and guides or other objectives.

Silvicultural Prescription: Even-age Management

This stand is being recommended for harvest at this time because it is not expected to obtain the desired condition given the 

current growth trajectory. This stand is mature with moderate stem decay and defect resulting in a situation where stand 

growth is being offset by decay. Even-aged clear cutting is being prescribed to preclude or minimize the risk of windthrow 

after harvest, promote natural regeneration by opening up the canopy, and minimize defect and disease in the future stand to 

the maximum extent possible.

 TIMBER/LOGGING:

This unit is planned for helicopter yarding to landings on existing NFS road 3015000.

 ENGINEERING/ROADS:

Reconstruction of existing NFS road 3015000, totaling 12,000 feet, is required to allow access to the unit. See road card for 

details. This road is also used to access Units 95, 96, 98, 108, and 109

 BOTANY:

No Concerns

 FISHERIES:

Streams are tributaries to Thorne River. Stream A5, 2, A2, A1, A3 characteristics do not include project-specific, fieldverified, information.

Stream#: 229-10 Class: III, IV Flagging: O/W, G/W C- Type: HCM, HCO

Concerns: blowdown and active erosion

Buffer (RMA): Class III for HCM to the top of the side-slope break. Class IV for HCO none.

Alternatives: 2, 3, and 5 Buffer (RAW): no review needed 

Protection: Category B and C 

Stream#: A5 Class: III Flagging: O/W C- Type: HCM 

Concerns: none known

Buffer (RMA): Class III for HCM to the top of the side-slope break. 

Alternatives: 2, 3, and 5 Buffer (RAW): no review needed

Protection: Category B 

Stream#: 2 Class: II, III Flagging: B/W, O/W C- Type: HCM, HCD 

Concerns: none known.

Buffer (RMA): Class II and III for HCM and HCD greater of 100 feet or to the top of the side-slope break. 

Alternatives: 2, 3, and 5 Buffer (RAW): no review needed.

Unit

Number 108 Alternatives 2, 3, 5

Summary of Concerns, Responses, BMPs and Mitigation

 INVASIVE SPECIES:

No Concerns
Unit 108

Protection: Category A and B 

Stream#: A2 Class: II Flagging: B/W C- Type: HCLw 

Concerns: none known.

Buffer (RMA): Class II for HCLw greater of 100 feet or to the top of the side-slope break. 

Alternatives: 2, 3, and 5 Buffer (RAW): no review needed.

Protection: Category A 

Stream#: A1 Class: I Flagging: B/W C- Type: FPS 

Concerns: none known.

Buffer (RMA): Class I for FPS greater of 130 feet, flood plain, riparian vegetation or soils, or riparian associated wetland 

fens. 

Alternatives: 2, 3, and 5 Buffer (RAW): no review needed.

Protection: Category A 

Stream#: A3 Class: II, III Flagging: B/W, O/W C- Type: HCV, HCD 

Concerns: none known.

Buffer (RMA): Class II for HCV greater of 100 feet or to the top of the side-slope break. Class III to the top of the side-slope 

break.

Alternatives: 2, 3, and 5 Buffer (RAW): no review needed.

Protection: Category A and B 

All other streams in unit: Class: IV Flagging: G/W C- Type: HC

Buffer (RMA): none Buffer (RAW): no review needed.

Protection: Category C

 GEOLOGY/KARST:

No Concerns

 HERITAGE RESOURCES:

This unit was investigated per the third amended interagency Programmatic Agreement (PA) for historic properties. As 

specified by the PA, any potential adverse effect on historic properties (if any) was mitigated and portions of the Area of 

Potential Effect will be monitored by a qualified heritage specialist during and/or after actual ground disturbance.

 SCENERY:

The Scenic Integrity Objective (SIO) for this unit is Very Low . It is entirely in Timber Production LUD and is considered Not 

Seen. There are no scenery resource concerns.

 RECREATION:

Portion of eastern boundary is adjacent to Thorne River inventoried roadless area.

 SOILS/WETLANDS:

Slopes range from 35 to 72% with the majority of slopes greater than 60%. Scattered areas of subalpine wetlands can be 

observed on the upper elevation fringes. No landslides have been mapped within the remaining unit, however slides in the 

area have been observed on slopes as low as 50%. Approximately 45 acres was excluded due to very high landslide 

potential, active and historic landslides, colluvial activity, steep slopes, and unstable drainages. In the remaining unit, full 

suspension is required to meet soil and wetland concerns (BMPs 12.5, 13.5, and 13.9). Unit is being evaluated and may be 

changed to partial harvest.

 WILDLIFE:

Unit includes average snow deer winter range (entire unit), some of which is also deep snow marten habitat/deer winter 

range (western 2/3 of unit). Legacy standard and guideline does not apply in this VCU.

Alternative 4: Unit dropped to maintain deer winter range and marten habitat, and other habitat values.
3015700

A3.1L.1L

2

A1

3

4

229-10

A3

A2

229-11

A5

A3.1L

A1

A3

1974 1998

1998

1976

1986

107

107

108

108

108

108

109

109

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 108 Alternative 2 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Partial Cut

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

580

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt2.mxd 14 July 2012

RR

SR
3015700

A3.1L.1L

2

A1

3

4

229-10

A3

A2

229-11

A5

A3.1L

A1

A3

1974 1998

1998

1976

1986

107

108

109

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 108 Alternative 3 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

580

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt3.mxd 14 July 2012

RR

SR
3015700

A3.1L.1L

2

A1

3

4

229-10

A3

A2

229-11

A5

A3.1L

A1

A3

1974 1998

1998

1976

1986

107

107

108

108

108

108

109

109

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 108 Alternative 5 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Sytematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

580

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt5.mxd 14 July 2012

RR

SR
Unit 109

Total Unit

Acres:

10.4 Prescription: Clearcut

VCU

Number:

580 Harvest

System:

Helicopter

Net Harvest

Volume

(MBF):

181

LUD:

Timber Production

 SILVICULTURE:

Existing Condition: This unit is an upper elevation old-growth stand. The main damage agent affecting overstory tree health 

and volume loss is stem rot and bole cracks. Overall the stand has patchy timber values in a low volume matrix. There is 

some spotty Alaska-cedar decline reported with dead stems in medium diameter classes. Windthrow risk is moderate. All 

previous harvest areas adjacent to or near this unit have met green-up with regeneration over 5 feet tall. This meets NFMA 

requirements for no longer being considered openings.

Silvicultural Objective/Desired Condition: The desired condition for this stand is a highly productive, healthy, windfirm stand 

grown for timber management that retains residual trees as needed to meet standards and guides or other objectives.

Silvicultural Prescription: Even-age Management

This stand is being recommended for harvest at this time because it is not expected to obtain the desired condition given the 

current growth trajectory. This stand is mature with moderate stem decay and defect resulting in a situation where stand 

growth is being offset by decay. Even-aged clear cutting is being prescribed to preclude or minimize the risk of windthrow 

after harvest, promote natural regeneration by opening up the canopy, and minimize defect and disease in the future stand to 

the maximum extent possible.

 TIMBER/LOGGING:

This unit is planned for helicopter yarding to landings on existing NFS road 3015000.

 ENGINEERING/ROADS:

Reconstruction of existing NFS road 3015000, totaling 12,000 feet, is required to allow access to the unit. See road card for 

details. This road is also used to access Units 95, 96, 98, 108.

 BOTANY:

No Concerns

 FISHERIES:

Streams are tributaries to Thorne River. Streams A3.1L and A3.1L.1L characteristics do not include project-specific, fieldverified, information.

Stream#: A3.1L Class: III Flagging: O/W C- Type: HCD

Concerns: none known

Buffer (RMA): Class III for HCM to to the top of the side-slope break.

Alternatives: 2, 3, and 5 Buffer (RAW): no review needed.

Protection: Category B

Stream#: A3.1L.1L Class: III Flagging: O/W C- Type: HCM

Concerns: none known

Buffer (RMA): Class III for HCM to the top of the side-slope break.

Alternatives: 2, 3, and 5 Buffer (RAW): no review needed.

Protection: Category B 

Stream#: 1 Class: II, III Flagging: B/W C- Type: HCV 

Concerns: blowdown and active erosion

Buffer (RMA): Class II for HCV greater of 100 feet of the top of the side-slope break. Class III for HCV to the top of the sideslope break.

Alternatives: 2, 3, and 5 Buffer (RAW): Will be identified by IDT during layout.

Protection: Category A and B 

Unit

Number 109 Alternatives 2, 3, 5

Summary of Concerns, Responses, BMPs and Mitigation

 INVASIVE SPECIES:

No Concerns
Unit 109

Stream#: 1.4R Class: III Flagging: O/W C- Type: HCM

Concerns: blowdown and active erosion

Buffer (RMA): Class III for HCM to the top of the side-slope break.

Alternatives: 2, 3, and 5 Buffer (RAW): Will be identified by IDT during layout.

Protection: Category B 

All other streams in unit: Class: IV Flagging: G/W C- Type: HC

Buffer (RMA): none Buffer (RAW): no review needed

Protection: Category C

 GEOLOGY/KARST:

No Concerns

 HERITAGE RESOURCES:

This unit was investigated per the third amended interagency Programmatic Agreement (PA) for historic properties. As 

specified by the PA, any potential adverse effect on historic properties (if any) was mitigated and portions of the Area of 

Potential Effect will be monitored by a qualified heritage specialist during and/or after actual ground disturbance.

 SCENERY:

The Scenic Integrity Objective (SIO) for this unit is Very Low . It is entirely in Timber Production LUD and is considered Not 

Seen. There are no scenery resource concerns.

 RECREATION:

Eastern portions of boundary is adjacent to Thorne River inventoried roadless area.

 SOILS/WETLANDS:

Slopes range from 30 to greater than 72%. The majority of slopes are greater than 60% in the unit. Slopes greater than 72% 

are located within the soil exclusion areas. Approximately 40 acres of the original unit was excluded due to very high 

landslide potential, active and historic landslides, colluvial activity, steep slopes, and unstable drainages. No landslides have 

been mapped within the remaining unit. No wetlands have been mapped in the unit. In the remaining unit, full suspension is 

required to meet soil and wetland concerns (BMPs 12.5, 13.5, and 13.9). Unit is under evaluation and may be changed to 

partial harvest.

 WILDLIFE:

Unit includes average snow deer winter range (almost entire unit), some of which is also deep snow marten habitat/deer 

winter range (most of unit except eastern lobe). Legacy standard and guideline does not apply in this VCU.

Alternative 4: Unit dropped maintain deer winter range and marten habitat.
3015000

1.4R.3R

1.4R.3R

3

4

1

1.4R.2R

1.1R 1.2R

1

A3

1.4R

1.3R.1R 1.3R

1.4R.1R

A3

A3.1L.1L

A3.1L

1999

1974

1998

1998

1998

108

108

109

109

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 109 Alternative 2 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Partial Cut

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

580

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt2.mxd 14 July 2012

RR

SR
3015000

1.4R.3R

1.4R.3R

3

4

1

1.4R.2R

1.1R 1.2R

1

A3

1.4R

1.3R.1R 1.3R

1.4R.1R

A3

A3.1L.1L

A3.1L

1999

1974

1998

1998

1998

108

109

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 109 Alternative 3 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

580

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt3.mxd 14 July 2012

RR

SR
3015000

1.4R.3R

1.4R.3R

3

4

1

1.4R.2R

1.1R 1.2R

1

A3

1.4R

1.3R.1R 1.3R

1.4R.1R

A3

A3.1L.1L

A3.1L

1999

1974

1998

1998

1998

108

108

109

109

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 109 Alternative 5 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Sytematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

580

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt5.mxd 14 July 2012

RR

SR
Unit 111

Total Unit

Acres:

18.7 Prescription: Clearcut

VCU

Number:

580 Harvest

System:

Helicopter

Net Harvest

Volume

(MBF):

550

LUD:

Timber Production

 SILVICULTURE:

Existing Condition: The overstory consists primarily of an old growth western hemlock and western redcedar mixture in the 

lower elevations, and a western hemlock, Alaska-cedar mix in the upper elevations, particularly on the more south facing 

slopes. Sitka spruce is present throughout the area, but as scattered trees or groups of one or two.	 Defect is moderate to 

high with stem decay and stem deformities of concern. The majority of the western hemlock is higher defect and smaller 

diameter. Alaska-cedar decline is significant in the upper elevations. Windthrow risk is moderate. All previous harvest areas 

adjacent to or near this unit have met green-up with regeneration over 5 feet tall. This meets NFMA requirements for no 

longer being considered openings.

Silvicultural Objective/Desired Condition: The desired condition for this stand is a highly productive, healthy, windfirm stand 

grown for timber management that retains residual trees as needed to meet standards and guides or other objectives

Silvicultural Prescription: Even-age Management

This stand is being recommended for harvest at this time because it is not expected to obtain the desired condition given the 

current growth trajectory. This stand is mature with moderate to high stem decay and defect resulting in a situation where 

stand growth is being offset by decay. Even-aged clear cutting is being prescribed to preclude or minimize the risk of 

windthrow after harvest, promote natural regeneration by opening up the canopy, and minimize defect and disease in the 

future stand to the maximum extent possible.

 TIMBER/LOGGING:

This unit is planned for helicopter yarding to landings on existing NFS road 3015640.

Roadless area adjacent to western boundary. In Alternative 3, OGR relocated adjacent to the western boundary of unit.

 ENGINEERING/ROADS:

Reconstruction of existing NFS road 3015640, totaling 2900 feet, is required to allow access to the unit. See road card for 

details. This road is also used to access Units 112, 114, and Unit 444 in Alternative 3.

 BOTANY:

No Concerns

 FISHERIES:

Streams are tributaries to Gravelly Creek and Falls Creek. Stream A12 characteristics do not include project specific field 

verified information.

Stream#: 2 Class: III , IV Flagging: O/W, G/W C- Type: HCM, HCO

Concerns: none

Buffer (RMA): Class III for HCM to the top of the side-slope break. Class IV for HCO none. 

Alternatives: 2, 3, 4 and 5 Buffer (RAW): no review needed

Protection: Category B and C 

Stream#: 3 Class: III, IV Flagging: O/W, G/W C- Type: HCM. HCO

Concerns: blowdown and active erosion

Buffer (RMA): Class III for HCM to the top of the side-slope break. Class IV for HCO none. 

Alternatives: 2, 3, 4, and 5 Buffer (RAW): Will be identified by IDT during layout.

Protection: Category B and C 

Stream#: 2 Class: III , IV Flagging: O/W, G/W C- Type: HCM, HCO

Concerns: none

Unit

Number 111 Alternatives 2, 3, 4, 5

Summary of Concerns, Responses, BMPs and Mitigation

 INVASIVE SPECIES:

No Concerns
Unit 111

Buffer (RMA): Class III for HCM to the top of the side-slope break. Class IV for HCO none. 

Alternatives: 2, 3, 4 and 5 Buffer (RAW): no review needed

Protection: Category B and C 

Stream#: 3 Class: III, IV Flagging: O/W, G/W C- Type: HCM. HCO

Concerns: blowdown and active erosion

Buffer (RMA): Class III for HCM to the top of the side-slope break. Class IV for HCO none. 

Alternatives: 2, 3, 4, and 5 Buffer (RAW): Will be identified by IDT during layout.

Protection: Category B and C 

Stream#: 4 Class: III Flagging: O/W C- Type: HCD

Concerns: blowdown and active erosion; channel side-slopes with loose, shallow soils and exposed bedrock.

Buffer (RMA): Class III for HCD to the top of the side-slope break

Alternatives: 2, 3, 4, and 5 Buffer (RAW): Will be identified by IDT during layout.

Protection: Category B 

Stream#: 5 Class: III, IV Flagging: O/W, G/W C- Type: HCM, HCO

Concerns: blowdown and active erosion

Buffer (RMA): Class III for HCM to top of the side-slope break. Class IV for HCO none

Alternatives: 2, 3, 4, and 5 Buffer (RAW): Will be identified by IDT during layout.

Protection: Category B and C 

Stream#: 6 Class: III Flagging: O/W C- Type: AFH

Concerns: blowdown, active erosion, coarse alluvium piles and debris deposits 

Buffer (RMA): Class III for AFH greater of 140 feet or the active portion of the alluvial fan.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): Will be identified by IDT during layout.

Protection: Category B 

Stream#: 7 Class: III, IV Flagging: O/W, G/W C- Type: HCM, HCO

Concerns: blowdown and active erosion

Buffer (RMA): Class III for HCM to top of the side-slope break. Class IV for HCO none

Alternatives: 2, 3, 4, and 5 Buffer (RAW): Will be identified by IDT during layout.

Protection: Category B and C 

Stream#: 8 Class: III Flagging: O/W C- Type: HCD

Concerns: blowdown and active erosion

Buffer (RMA): Class III for HCD to the top of the side-slope break

Alternatives: 2, 3, 4, and 5 Buffer (RAW): Will be identified by IDT during layout.

Protection: Category B 

Stream#: 10 Class: III , IV Flagging: O/W, G/W C- Type: HCM, HCO

Concerns: blowdown and active erosion

Buffer (RMA): Class III for HCM to the top of the side-slope break. Class IV for HCO none

Alternatives: 2, 3, 4, and 5 Buffer (RAW): Will be identified by IDT during layout.

Protection: Category B and C 

Stream#: A12 Class: III, IV Flagging: O/W, G/W C- Type: HCM

Concerns: Blowdown and active erosion assumed

Buffer (RMA): Class III for HCM to the top of the side-slope break. Class IV for HCO none

Alternatives: 2, 3, 4, and 5 Buffer (RAW): Will be identified by IDT during layout.

Protection: Category B and C 

All other streams in unit: Class: IV Flagging: G/W C- Type: HC

Buffer (RMA): none Buffer (RAW): no review needed

Protection: Category C

 GEOLOGY/KARST:

No Concerns

 HERITAGE RESOURCES:

This unit was investigated per the third amended interagency Programmatic Agreement (PA) for historic properties. As 

specified by the PA, any potential adverse effect on historic properties (if any) was mitigated and portions of the Area of 

Potential Effect will be monitored by a qualified heritage specialist during and/or after actual ground disturbance.
Unit 111

 SCENERY:

The Scenic Integrity Objective (SIO) for this unit is Very Low . It is entirely in Timber Production LUD and is considered Not 

Seen. There are no scenery resource concerns.

 RECREATION:

Western boundary of much of unit is adjacent to the Thorne River inventoried roadless area.

 SOILS/WETLANDS:

Slopes range from 35 to 100%. Most slopes greater than 72% are located within the soil exclusion areas. About 16 acres 

were excluded from harvest due to very high landslide potential, active and historic landslides, colluvial activity, MMI4 soils, 

steep slopes, and unstable drainages; many of these acres were also excluded because of roadless. There are about 0.5 

acre of slopes that are greater than 72% that are suitable for harvest with full suspension dispersed throughout the remaining 

unit. A partially revegetated debris torrent is located within the unit that is suitable for harvest. No wetlands have been 

mapped in the unit. In the remaining unit, full suspension is required to meet soil and wetland concerns (BMPs 12.5, 13.5, 

and 13.9); unit is being evaluated to determine if partial harvest is also necessary.

 WILDLIFE:

Unit includes average snow deer winter range (entire unit). Legacy standard and guideline does not apply in this VCU.

Old-growth Reserve (OGR) Boundary

Alternatives 2, 4, and 5: Current OGR boundaries are not adjacent to unit.

Alternative 3: OGR relocated adjacent to the western boundary of unit.
3015640

3015640

3

1.4L

6

1.2R

8

A12

4

1.2R

1.64R

1 1.65R

7.1R

1.68L

1.3L.1R

7

2

A2.6R.2R

5.1L

5

10

11

9

7

1.3L

1.2 R

1.66R 1

1990

1976

1976

1976

111

111

112

114

111

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 111 Alternative 2 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Partial Cut

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

580

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt2.mxd 14 July 2012

RR

SR
3015640

5.1L

1.4L

6

1.2R

8

A12

1.2R

1.64R

1 1.65R

7.1R

1.68L

1.3L.1R

7

2

A2.6R.2R

4

5

10

11

9

7

1.3L

1.2 R

1.66R 1

3

1990

1976

1976

1976

112

114

111

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 111 Alternative 3 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

580

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt3.mxd 14 July 2012

RR

SR
3015640

3015640

3

1.4L

6

1.2R

8

A12

4

1.2R

1.64R

1 1.65R

7.1R

1.68L

1.3L.1R

7

2

A2.6R.2R

5.1L

5

10

11

9

7

1.3L

1.2 R

1.66R 1

1990

1976

1976

1976

111

111

112

114

111

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 111 Alternative 4 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

580

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt4.mxd 20 March 2012

RR

SR
3015640

3015640

3

1.4L

6

1.2R

8

A12

4

1.2R

1.64R

1 1.65R

7.1R

1.68L

1.3L.1R

7

2

A2.6R.2R

5.1L

5

10

11

9

7

1.3L

1.2 R

1.66R 1

1990

1976

1976

1976

111

111

112

114

111

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 111 Alternative 5 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Sytematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

580

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt5.mxd 14 July 2012

RR

SR
Unit 112

Total Unit

Acres:

4.0 Prescription: 2, 3, 5 - Clearcut

4 - 25% Removal

VCU

Number:

580 Harvest

System:

Helicopter

Net Harvest

Volume

(MBF):

2, 3, 5 - 118

4 - 30 LUD:

Timber Production

 SILVICULTURE:

Existing Condition: The overstory consists primarily of a western hemlock and western redcedar mixture with Sitka spruce 

scattered throughout. Stand structure is old growth. Trees are mature to over-mature with declining to static volume growth. 

Defect and decay are moderate to high. Mistletoe rating is low. Alaska cedar decline is present. All previous harvest areas 

adjacent to or near this unit have met green-up with regeneration over 5 feet tall. This meets NFMA requirements for no 

longer being considered openings. Windthrow risk is moderate.

Silvicultural Objective/Desired Condition: The desired condition for this stand is a highly productive, healthy, windfirm stand 

grown for timber management that retains residual trees as needed to meet standards and guides or other objectives.

Silvicultural Prescription: Even-age Management (Alternatives 2, 3, 5)

This stand is being recommended for harvest at this time because it is not expected to obtain the desired condition given the 

current growth trajectory. This stand is mature with moderate to high stem decay and defect resulting in a situation where 

stand growth is being offset by decay. Even-aged clear cutting is being prescribed to preclude or minimize the risk of 

windthrow after harvest, promote natural regeneration by opening up the canopy, and minimize defect and disease in the 

future stand to the maximum extent possible.

Silvicultural Prescription: Uneven-age Management Single Tree Selection (Alternative 4)

Maintain at least 75 percent of the setting pretreatment basal area, based on standing live tree total for the unit, uncut. 

Individual trees selected for harvest may occur in small groups but will generally be evenly distributed across the stand. Any 

small groups will usually be less than one acre but may occasionally go up to two acres in size where needed to address 

insect and disease issues or capitalize on existing advanced regeneration of desirable tree species. Trees selected for 

harvest will generally be well distributed and no large openings will occur as a result of the harvest. Review the marking 

guides and silvicultural prescription for more detailed information and direction regarding how to implement this prescription. 

The uneven-aged single tree selection regeneration method is being prescribed for this unit in Alternative 4 specifically to 

maintain intact diverse structure for wildlife needed at this time and place in the landscape to meet the objectives of this 

alternative. This system is not optimum for promoting timber production but is being prescribed primarily to mitigate the 

overall effects of the project on wildlife.

 TIMBER/LOGGING:

This unit is planned for helicopter yarding to landings on existing NFS road 3015640.

 ENGINEERING/ROADS:

Reconstruction of existing NFS road 3015640, totaling 1900 feet, is required to allow access to the unit. See road card for 

details. This road is also used to access Units 111, 114, and 444.

Follow applicable BMP's during construction and layout. In particular adhere to the following BMP's: 14.2, 14.6, 14.7, 14.8, 

14.9, 14.10, 14.12, 14.18.

 BOTANY:

No Concerns

 FISHERIES:

Unit

Number 112 Alternatives 2, 3, 4, 5

Summary of Concerns, Responses, BMPs and Mitigation

 INVASIVE SPECIES:

No Concerns
Unit 112

Streams are tributaries to Falls Creek. 

Stream#: 1 Class: I Flagging: B/W C- Type: AFM, HCV

Concerns: blowdown, side-slopes with exposed bedrock and loose shallow soils.

Buffer (RMA): Class I for AFM greater of 140 feet or the active portion of the alluvial fan. Class I for HCV greater of 100 feet 

or to the top of the side-slope break.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): Will be identified by IDT during layout.

Protection: Category A 

Stream#: 1.3L Class: II, IV Flagging: B/W, G/W C- Type: HCO

Concerns: blowdown

Buffer (RMA): Class II for HCO greater of 100 feet or to the top of the side-slope break. Class IV for HCO none.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed

Protection: Category A and C 

Stream#: 1.3L.1R Class: II, IV Flagging: B/W, G/W C- Type: HCO

Concerns: blowdown

Buffer (RMA): Class II for HCO greater of 100 feet or to the top of the side-slope break. Class IV for HCO none.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed

Protection: Category A and C 

Stream#: 1.4L Class: III Flagging: O/W C- Type: HCL

Concerns: blowdown

Buffer (RMA): Class III for HCL to the top of the side-slope break.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): Will be identified by IDT during layout.

Protection: Category B 

All other streams in unit: Class: IV Flagging: G/W C- Type: HC

Buffer (RMA): none Buffer (RAW): no review needed

Protection: Category C

 GEOLOGY/KARST:

No Concerns

 HERITAGE RESOURCES:

This unit was investigated per the third amended interagency Programmatic Agreement (PA) for historic properties. As 

specified by the PA, any potential adverse effect on historic properties (if any) was mitigated and portions of the Area of 

Potential Effect will be monitored by a qualified heritage specialist during and/or after actual ground disturbance.

 SCENERY:

The Scenic Integrity Objective (SIO) for this unit is Very Low . It is entirely in Timber Production LUD and is considered Not 

Seen. There are no scenery resource concerns.

 RECREATION:

Thorne River inventoried roadless area adjacent to western boundary.

 SOILS/WETLANDS:

Slopes range from 35 to 100%. All slopes greater than 72% are located within the soil exclusion areas. About 4 acres were 

excluded from harvest due to very high landslide potential, active and historic landslides, colluvial activity, MMI4 soils, steep 

slopes, and unstable drainages. No wetlands have been mapped in the unit. In the remaining unit, full suspension is required 

to meet soil and wetland concerns (BMPs 12.5, 13.5, and 13.9); a requirement for partial harvest in all alternatives is under 

evaluation.

 WILDLIFE:

Unit includes average snow deer winter range (entire unit), all of which is also deep snow marten habitat/deer winter range. 

Legacy standard and guideline does not apply in this VCU.

Alternative 4: Prescription is 25% basal area removal to maintain connectivity and other habitat values.

Old-growth Reserve (OGR) Boundary

Alternatives 2, 4, and 5: Current OGR boundary is not adjacent to the unit.

Alternative 3: OGR relocated adjacent to the western and northern boundaries of unit.
3015600

3015640

3015600

3015640

1.61R

8

A12

1

1.63L

6

1.65L

1 5. 7

1.5 8R

1.59R

7.1R

1.57L

1.3L.1R

1.65R

1.60L

7

1.62L

1.59L

1.64L

1.60R

1.61L

1.68L

1.2 R

1.58L

1.66L

1.67L

1.62R

10

1.63 R

11

9

1.64R

1.2R

7

1.3L

1.66R 1

1.4L

1.2R

1990

1976

1976

1976

111

111

112

114

111

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 112 Alternative 2 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Partial Cut

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

580

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt2.mxd 14 July 2012

RR

SR
3015600

3015600

3015640

1.57L

8

A12

1

1.63L

1.65L

1 5. 7

1.5 8R

1.59R

1.61R

7.1R

1.3L.1R

1.65R

1.60L

7

1.62L

1.59L

1.64L

1.60R

1.61L

1.68L

1.3L

1.58L

1.66L

1.67L

1.62R

10

1.63 R

11

9

1.64R

1.2R

7

1.2 R

1.66R 1

1.4L

6

1.2R

1990

1976

1976

1976

112

114

111

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 112 Alternative 3 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

580

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt3.mxd 14 July 2012

RR

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3015600

3015640

3015600

3015640

1.61R

8

A12

1

1.63L

6

1.65L

1 5. 7

1.5 8R

1.59R

7.1R

1.57L

1.3L.1R

1.65R

1.60L

7

1.62L

1.59L

1.64L

1.60R

1.61L

1.68L

1.2 R

1.58L

1.66L

1.67L

1.62R

10

1.63 R

11

9

1.64R

1.2R

7

1.3L

1.66R 1

1.4L

1.2R

1990

1976

1976

1976

111

111

112

114

111

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 112 Alternative 4 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

580

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt4.mxd 20 March 2012

RR

SR
3015600

3015640

3015600

3015640

1.61R

8

A12

1

1.63L

6

1.65L

1 5. 7

1.5 8R

1.59R

7.1R

1.57L

1.3L.1R

1.65R

1.60L

7

1.62L

1.59L

1.64L

1.60R

1.61L

1.68L

1.2 R

1.58L

1.66L

1.67L

1.62R

10

1.63 R

11

9

1.64R

1.2R

7

1.3L

1.66R 1

1.4L

1.2R

1990

1976

1976

1976

111

111

112

114

111

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 112 Alternative 5 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Sytematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

580

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt5.mxd 14 July 2012

RR

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Unit 114

Total Unit

Acres:

30.1 Prescription: 2, 3, 5 - Clearcut

4 - 25% Removal

VCU

Number:

580 Harvest

System:

Helicopter

Net Harvest

Volume

(MBF):

2, 3, 5 - 797

4 - 199 LUD:

Timber Production

 SILVICULTURE:

Existing Condition: This unit has old growth stand structure. The overstory consists primarily of a western hemlock and 

western redcedar mixture in the lower elevations, and a western hemlock, Alaska-cedar mix in the upper elevations, 

particularly on the more south facing slopes. Sitka spruce is scattered throughout. Moderate to high stem decay and stem 

deformities are present. The majority of the western hemlock is higher defect and smaller diameter. Alaska-cedar decline is 

significant in the upper elevations. Windthrow risk is moderate. All previous harvest areas adjacent to or near this unit have 

met green-up with regeneration over 5 feet tall. This meets NFMA requirements for no longer being considered openings.

Silvicultural Objective/Desired Condition: The desired condition for this stand is a highly productive, healthy, windfirm stand 

grown for timber management that retains residual trees as needed to meet standards and guides or other objectives.

Silvicultural Prescription: Even-age Management (Alternatives 2, 3, 5)

This stand is being recommended for harvest at this time because it is not expected to obtain the desired condition given the 

current growth trajectory. This stand is mature with moderate to high stem decay and defect resulting in a situation where 

stand growth is being offset by decay. Even-aged clear cutting is being prescribed to preclude or minimize the risk of 

windthrow after harvest, promote natural regeneration by opening up the canopy, and minimize defect and disease in the 

future stand to the maximum extent possible. 

Silvicultural Prescription: Uneven-age Management Single Tree Selection (Alternative 4)

Maintain at least 75 percent of the setting pretreatment basal area, based on standing live tree total for the unit, uncut. 

Individual trees selected for harvest may occur in small groups but will generally be evenly distributed across the stand. Any 

small groups will usually be less than one acre but may occasionally go up to two acres in size where needed to address 

insect and disease issues or capitalize on existing advanced regeneration of desirable tree species. Trees selected for 

harvest will generally be well distributed and no large openings will occur as a result of the harvest. Review the marking 

guides and silvicultural prescription for more detailed information and direction regarding how to implement this prescription. 

The uneven-aged single tree selection regeneration method is being prescribed for this unit in Alternative 4 specifically to 

maintain intact diverse structure for wildlife needed at this time and place in the landscape to meet the objectives of this 

alternative. This system is not optimum for promoting timber production but is being prescribed primarily to mitigate the 

overall effects of the project on wildlife.

 TIMBER/LOGGING:

This unit is planned for helicopter yarding to landings on existing NFS road 3015640.

 ENGINEERING/ROADS:

Reconstruction of existing NFS road 3015640, totaling 1900 feet, is required to allow access to the unit. See road card for 

details. This road is also used to access Units 111, 112, and 444 (only in Alternative 3).

 BOTANY:

No Concerns

 FISHERIES:

Unit

Number 114 Alternatives 2, 3, 4, 5

Summary of Concerns, Responses, BMPs and Mitigation

 INVASIVE SPECIES:

No Concerns
Unit 114

Streams are tributaries to Gravelly Creek. 

Stream#: 1 Class: I Flagging: B/W C- Type: AFM, HCV

Concerns: blowdown, side-slopes with exposed bedrock and loose shallow soils

Buffer (RMA): Class I for AFM greater of 140 feet or the active portion of the alluvial fan. Class I for HCV greater of 100 feet 

or to the top of the side-slope break.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): Will be identified by IDT during layout.

Protection: Category A 

Stream#: 1.2R Class: I, II, III Flagging: B/W, O/W C- Type: HCL, HCD

Concerns: blowdown and active erosion

Buffer (RMA): Class I and II for HCL greater of 100 feet or to the top of the side-slope break. Class III for HCL and HCD to 

the top of the side-slope break.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed

Protection: Category A and C

All other streams in unit: Class: IV Flagging: G/W C- Type: HC

Buffer (RMA): none Buffer (RAW): no review needed

Protection: Category C

 GEOLOGY/KARST:

No Concerns

 HERITAGE RESOURCES:

This unit was investigated per the third amended interagency Programmatic Agreement (PA) for historic properties. As 

specified by the PA, any potential adverse effect on historic properties (if any) was mitigated and portions of the Area of 

Potential Effect will be monitored by a qualified heritage specialist during and/or after actual ground disturbance.

 SCENERY:

The Scenic Integrity Objective (SIO) for this unit is Very Low . It is entirely in Timber Production LUD and is considered Not 

Seen. There are no scenery resource concerns.

 RECREATION:

Thorne River roadless area adjacent to a portion of western boundary.

 SOILS/WETLANDS:

Slopes range from 35 to 100%. All slopes greater than 72% are located within the soil exclusion areas. About 8 acres were 

excluded from harvest due to very high landslide potential, active and historic landslides, colluvial activity, MMI4 soils, steep 

slopes, and unstable drainages. There are approximately 9 acres (31% of the unit) of forested wetlands in the western third 

of the unit. In the remaining unit, full suspension is required to meet soil and wetland concerns (BMPs 12.5, 13.5, and 13.9); 

unit is under further evaluation to determine if partial harvest should be required in all alternatives.

 WILDLIFE:

Unit includes average snow deer winter range (entire unit), some of which is also deep snow marten habitat/deer winter 

range (central 1/3 of unit). Legacy standard and guideline does not apply in this VCU.

Alternative 4: Prescription is 25% basal area removal to maintain connectivity and other habitat values.

Old-growth Reserve (OGR) Boundary

Alternatives 2, 4, and 5: Current OGR boundary is near northeastern corner of unit.

Alternative 3: OGR relocated adjacent to the western boundary of unit.
3015600

3015600

3015640

1.66R

1.4L

1.2R

8

A12

1

1.63L

1.2R

.57L

1.58L

1.61R

1.56R

1.55R

1.3L.1R

1.65R

1.60L

1.62L

1.59R

1.59L

1.64L

1.60R

1.61L

1.68L

1.65L

1.66L

1.67L

1.58

1.5

R

7R

1.62R

10

1.63 R

11

9

1.64R

1

1.3L

1.2 R

1990

1976

1992

1976

1976

111

111

112

114

111

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 114 Alternative 2 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Partial Cut

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

580

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt2.mxd 14 July 2012

RR

SR
3015600

3015600

3015640

1.56R

1.2R

8

A12

1

1.63L

1.2R

.57L

1.58L

1.61R

1.55R

1.3L.1R

1.65R

1.60L

1.62L

1.59R

1.59L

1.64L

1.60R

1.61L

1.68L

1.65L

1.66L

1.67L

1.58

1.5

R

7R

1.62R

10

1.63 R

11

9

1.64R

1

1.3L

1.2 R

1.66R

1.4L

1990

1976

1976

1976

1992

112

114

111

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 114 Alternative 3 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

580

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt3.mxd 14 July 2012

RR

SR
3015600

3015600

3015640

1.66R

1.4L

1.2R

8

A12

1

1.63L

1.2R

.57L

1.58L

1.61R

1.56R

1.55R

1.3L.1R

1.65R

1.60L

1.62L

1.59R

1.59L

1.64L

1.60R

1.61L

1.68L

1.65L

1.66L

1.67L

1.58

1.5

R

7R

1.62R

10

1.63 R

11

9

1.64R

1

1.3L

1.2 R

1990

1976

1992

1976

1976

111

111

112

114

111

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 114 Alternative 4 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

580

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt4.mxd 20 March 2012

RR

SR
3015600

3015600

3015640

1.66R

1.4L

1.2R

8

A12

1

1.63L

1.2R

.57L

1.58L

1.61R

1.56R

1.55R

1.3L.1R

1.65R

1.60L

1.62L

1.59R

1.59L

1.64L

1.60R

1.61L

1.68L

1.65L

1.66L

1.67L

1.58

1.5

R

7R

1.62R

10

1.63 R

11

9

1.64R

1

1.3L

1.2 R

1990

1976

1992

1976

1976

111

111

112

114

111

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 114 Alternative 5 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Sytematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

580

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt5.mxd 14 July 2012

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Unit 115

Total Unit

Acres:

37.5 Prescription: Clearcut

VCU

Number:

597.

2

Harvest

System:

Shovel

Net Harvest

Volume

(MBF):

829

LUD:

Modified Landscape, 

Timber Production

 SILVICULTURE:

Existing condition: Unit 115 is predominantly in old growth stand structure with mostly over-mature, declining timber. In the 

western hemlock damages and defects are moderate to high except in the eastern portions which has fewer defects and 

appears as a younger cohort. The incidence of mistletoe is moderate to high throughout. In the western redcedar damages 

and defect are moderate with scattered areas of better grade present. Windthrow risk is moderate to high. All previous 

harvest areas adjacent to or near this unit have met green-up with regeneration over 5 feet tall. This meets NFMA 

requirements for no longer being considered openings.

Silvicultural Objective/Desired Condition: The desired condition for this stand is a highly productive, healthy, windfirm stand 

grown for timber management that retains residual trees as needed to meet standards and guides or other objectives

Silvicultural Prescription: Even-age Management - Clearcut

Approximately 4 acres of this unit is adjacent to the Control Lake-Thorne Bay highway and due to the combination of Scenic 

Viewshed LUD and foreground distance zone, requires visual mitigation. In order to meet this requirement a screen of trees 

is being prescribed to be maintained to block the harvest area from view. This screen is incorporated into legacy. Design this 

screen approximately as shown on the unit card map. Evaluate the effectiveness and windthrow risk of the planned screen at 

the time of layout and adjust as needed. 

This stand is being recommended for harvest at this time because it is not expected to obtain the desired condition given the 

current growth trajectory. This stand is mature with moderate stem decay and defect resulting in a situation where stand 

growth is being offset by decay. Even-aged clear cutting is being prescribed to preclude or minimize the risk of windthrow 

post harvest, promote natural regeneration by opening up the canopy, and minimize defect and disease in the future stand to 

the maximum extent possible. 

The legacy standard and guide applies in this VCU. This requires that approximately 16 acres of productive old growth 

representative of the overall composition of the planned harvest area be maintained indefinitely. The required legacy 

structure was planned along hwy for screening, legacy in SW placed to exclude sensitive plant, and legacy placed in E lobe 

of unit to reduce road length and block up area around Class 1 RMAs. Mapped legacy totals approximately 17 acres. Any 

adjustments to the planned unit during implementation must consider the planned acreage and location of legacy.

 TIMBER/LOGGING:

This unit is planned for shovel yarding to the proposed temporary road.

 ENGINEERING/ROADS:

Unit is accessed by a proposed temporary road, totaling 2800 feet, as displayed on the unit card. Approximately 700 feet of 

this road will be constructed across decommissioned road bed. Temporary road is accessed by state highway and will 

require a driveway permit to allow construction.

 BOTANY:

Two populations (totaling 3 plants) of lesser round-leaved orchid (sensitive plant) occur in the western half of unit. Both of 

these populations were entirely incorporated into legacy. One population (15 plants) of Alaska rein orchid (sensitive plant) 

occurs about 100 feet south of unit.

Unit could slightly indirectly affect the one population of Alaska rein orchid located to the south of the unit.

 FISHERIES:

Unit

Number 115 Alternatives 2, 3, 5

Summary of Concerns, Responses, BMPs and Mitigation

 INVASIVE SPECIES:

No Concerns
Unit 115

Streams are tributaries to Thorne Bay. 

Stream#: 2.1R Class: I, II, IV Flagging: B/W, G/W C- Type: MMO

Concerns: none 

Buffer (RMA): Class I and II for MMO greater of 120 feet, flood plain, riparian vegetation or soils, or riparian associated 

wetland fens. Class IV for MMO none.

Alternatives: 2, 3, and 5 Buffer (RAW): no review needed

Protection: Category A and C 

Stream#: 2.4R Class: I, II, IV Flagging: B/W, G/W C- Type: MMO

Concerns: none 

Buffer (RMA): Class I and II for MMO greater of 120 feet, flood plain, riparian vegetation or soils, or riparian associated 

wetland fens. Class IV for MMO none.

Alternatives: 2, 3, and5 Buffer (RAW): no review needed

Protection: Category A and C 

Stream#: Lake-A1 Class: I Flagging: B/W C- Type: L

Concerns: none 

Buffer (RMA): Class I for Lake-1 greater of 100 horizontal feet or to the extent of the flood plain, riparian vegetation or soils, 

riparian associated wetland fens, or one site-potential tree height. 

Alternatives: 2, 3, and 5 Buffer (RAW): no review needed

Protection: Category A

Stream#: 1.6L.1R Class: I Flagging: B/W C- Type: PAB

Concerns: none 

Buffer (RMA): Class I PAB greater of 100 feet, flood plain, riparian vegetation or soils, or riparian associated wetland fens. 

Alternatives: 2, 3, and 5 Buffer (RAW): no review needed

Protection: Category A

Stream#: 1.6L.2R Class: I, IV Flagging: B/W, G/W C- Type: MMO, HCO

Concerns: none 

Buffer (RMA): Class I MMO greater of 120 feet, flood plain, riparian vegetation or soils, or riparian associated wetland fens. 

Class IV HCO none.

Alternatives: 2, 3, and5 Buffer (RAW): Will be identified by IDT during layout.

Protection: Category A and C

Stream#: 1.6L.2R Class: I, IV Flagging: B/W, G/W C- Type: PAB, MMO

Concerns: none 

Buffer (RMA): Class I PAB greater of 100 feet, flood plain, riparian vegetation or soils, or riparian associated wetland fens. 

Class IV MMO none.

Alternatives: 2, 3, and5 Buffer (RAW): Will be identified by IDT during layout.

Protection: Category A and C 

 

Stream#: Lake-A2 Class: I Flagging: B/W C- Type: L

Concerns: none 

Buffer (RMA): Class I for Lake-1 greater of 100 horizontal feet or to the extent of the flood plain, riparian vegetation or soils, 

riparian associated wetland fens, or one site-potential tree height. 

Alternatives: 2, 3, and 5 Buffer (RAW): no review needed

Protection: Category A 

All other streams in unit: Class: IV Flagging: G/W C- Type: HC

Buffer (RMA): none Buffer (RAW): no review needed

Protection: Category C 

Temporary roads (new and decommissioned) for Unit 115: Alternatives 2, 3, and 5 -- No known stream crossings. New 

temporary roads would be an extension off of reopened decommissioned road. The temporary roads have not been field 

verified and will be surveyed before implementation. If any stream crossings are found, crossings structures and locations 

will be approved by USFS, in consultation with fisheries biologist or hydrologist, prior to construction (BMP 14.17). During 

construction of temporary roads implement BMPs 12.16, 13.10, 13.11, 13.16, 14.3, and 14.5.

 GEOLOGY/KARST:

No Concerns

 HERITAGE RESOURCES:
Unit 115

This unit was investigated per the third amended interagency Programmatic Agreement (PA) for historic properties. As 

specified by the PA, any potential adverse effect on historic properties (if any) was mitigated and portions of the Area of 

Potential Effect will be monitored by a qualified heritage specialist during and/or after actual ground disturbance.

 SCENERY:

The Scenic Integrity Objective (SIO) for this unit is mostly Very Low, but it includes 4 acres of Moderate. A portion of the uniit 

is in Modified Landscape LUD along the Control Lake-Thorne Bay highway, but most is in Timber Production. The original 

unit extended to the edge of the highway in some areas; however, the unit is now screened from the highway by a portion of 

legacy (see unit card map and silvicultural prescription). As a result all harvest is about 300 ft or more from the highway. As 

noted in the prescription, the visual buffer or screen will be designed for wind firmness.

 RECREATION:

No concerns

 SOILS/WETLANDS:

Slope range from less than 10 to 45%. There is a muskeg located within the unit and forested wetland is dominant. The soils 

and wetlands are suitable for a minimum partial suspension yarding or shovel yarding. All logging systems should follow 

BMPs 12.5, 13.2 and 13.9. Specifically, the shovel operator should avoid the small non-forested areas of the unit to prevent 

rutting. Slopes over 25% gradient may not be suitable for shovel yarding under some soil moisture conditions. Use care 

when approving shovel yarding on slopes over 25% gradient. Avoid track slippage and rutting.

A temporary road will impact approximately 2 acres of forested wetland within the unit and about 1/2 acres of forested 

wetland outside the unit. These impacts are necessary due to topography and the location of an existing road (BMP 12.5, 

13.2). Wetland avoidance was not practicable due to the abundance of forested wetland. Provide adequate cross drainage, 

remove structures, and close the road after harvest (BMP 14.9) (33 CFR BMPs 4, 5, 6).

 WILDLIFE:

Unit includes average snow deer winter range (central portions of unit), some of which is also deep snow marten habitat/deer 

winter range (north central portion of unit). Unit is adjacent to Honker large OGR complex and in an area identified by the 

interagency OGR review team as a low elevation corridor between the Honker large OGR and salt water at Salt Chuck (south 

of the project). Legacy standard and guideline applies in this VCU; Legacy acres cover some deer winter range and marten 

habitat.

Alternative 4: Unit dropped because location coincides with the biologically preferred small OGR.
3013000

929

929

2.3R

1.6L.3R

1.6L 2. R

2.1R

1.5L

1.6L.1R

1.5L

1.6L

2.2R

2.4R

LAKE A2

1

LAKE A1

1989

2000

2000

2005

1989

115

116

117

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 115 Alternative 2 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Partial Cut

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

597.2

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt2.mxd 14 July 2012

RR

SR
3013000

929

929

2.3R

1.6L.3R

1.6L 2. R

2.1R

1.5L

1.6L.1R

1.5L

1.6L

2.2R

2.4R

LAKE A2

1

LAKE A1

1989

2000

2000

2005

1989

115

116

117

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 115 Alternative 3 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

597.2

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt3.mxd 14 July 2012

RR

SR
3013000

929

929

2.3R

1.6L.3R

1.6L 2. R

2.1R

1.5L

1.6L.1R

1.5L

1.6L

2.2R

2.4R

LAKE A2

1

LAKE A1

1989

2000

2000

2005

1989

115

116

117

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 115 Alternative 5 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Sytematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

597.2

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt5.mxd 14 July 2012

RR

SR
Unit 116

Total Unit

Acres:

16.5 Prescription: Clearcut

VCU

Number:

597.

2

Harvest

System:

Shovel

Net Harvest

Volume

(MBF):

370

LUD:

Modified Landscape, 

Timber Production

 SILVICULTURE:

Existing Condition: This unit has old growth structure with mature to over-mature timber. Timber volume growth is declining in 

general. In the western hemlock mistletoe varies from moderate to heavy and overall stem rot is moderate to high in larger 

trees. In the western redcedar defect is average or less with quality medium to smaller diameter trees. An even-aged portion 

of the stand in the southwest has 9" diameter western hemlock indicating a younger cohort and high wind exposure in the 

area. Windthrow risk is moderate overall. All previous harvest areas adjacent to or near this unit have met green-up with 

regeneration over 5 feet tall. This meets NFMA requirements for no longer being considered openings.

Silvicultural Objective/Desired Condition: The desired condition for this stand is a highly productive, healthy, windfirm stand 

grown for timber management that retains residual trees as needed to meet standards and guides or other objectives.

Silvicultural Prescription: Even-age Management

Approximately 5 acres of this unit is adjacent to the Control Lake-Thorne Bay highway and due to the combination of Scenic 

Viewshed LUD and foreground distance zone, requires visual mitigation. In order to meet this requirement a screen of trees 

is being prescribed to be maintained to block the harvest area from view. This screen is incorporated into legacy (see 

below). Design this screen approximately as shown on the unit card map. Evaluate the effectiveness and windthrow risk of 

the planned screen at the time of layout and adjust as needed. 

This stand is being recommended for harvest at this time because it is not expected to obtain the desired condition given the 

current growth trajectory. This stand is mature with moderate to heavy stem decay and defect resulting in a situation where 

stand growth is being offset by decay. Even-aged clear cutting is being prescribed to preclude or minimize the risk of 

windthrow post harvest, promote natural regeneration by opening up the canopy, and minimize defect and disease in the 

future stand to the maximum extent possible. 

The legacy standard and guide applies in this VCU. This requires that approximately 8 acres of productive old growth 

representative of the overall composition of the planned harvest area be maintained indefinitely. The required legacy 

structure is planned to provide screening from highway, to build off RMA and provide RAW, and reduce sensitive plant 

populations in unit. Mapped legacy totals approximately 8 acres. Any adjustments to the planned unit during implementation 

must consider the planned acreage and location of legacy.

 TIMBER/LOGGING:

This unit is planned for shovel yarding to the proposed temporary road.

 ENGINEERING/ROADS:

Unit is accessed by a proposed temporary road, totaling 800 feet, as displayed on the unit card. Temporary road is 

accessed by state highway and will require a driveway permit to allow construction.

 BOTANY:

Units 116 and 117 directly impact about 1/3 of a large lesser round-leaved orchid (sensitive plant) population consisting of 80 

individiuals. Legacy was placed to cover much of this overlap in both units. Other populations are located nearby, but well 

outside of these harvest units. Another small population (4 individuals) is located at southern-most corner of unit. Legacy 

covers all overlap with this population.

This unit would indirectly affect portions of the two lesser round-leaved orchid populations located outside of unit and in 

legacy.

 FISHERIES:

Unit

Number 116 Alternatives 2, 3, 5

Summary of Concerns, Responses, BMPs and Mitigation

 INVASIVE SPECIES:

Infestation of Canada thistle located near the unit, just north of the highway. This infestation has been treated in the past; 

monitoring and follow-up treatments are recommended.
Unit 116

Streams are tributaries to Rio Beaver Creek. 

Stream#: 1 Class: I Flagging: B/W C- Type: FPL, LCM

Concerns: none 

Buffer (RMA): Class I for FPL greater of 130 feet, flood plain, riparian vegetation or soils, or riparian associated wetland 

fens. Class I for LCM greater of 100 feet or to the top of the side-slope break.

Alternatives: 2, 3, and 5 Buffer (RAW): Will be identified by IDT during layout.

Protection: Category A 

Stream#: 1.5L Class: II Flagging: B/W, C- Type: HCO, MMO

Concerns: none 

Buffer (RMA): Class II for HCO greater of 100 feet or to the top of the side-slope break. Class II for MMO greater of 120 feet, 

flood plain, riparian vegetation or soils, or riparian associated wetland fens. 

Alternatives: 2, 3, and 5 Buffer (RAW): no review needed

Protection: Category A 

Stream#: 1.6L Class: I Flagging: B/W, C- Type: PAB, MMS

Concerns: none 

Buffer (RMA): Class I for MMS greater of 120 feet, flood plain, riparian vegetation or soils, or riparian associated wetland 

fens. Class I for PAB greater of 100 feet, flood plain, riparian vegetation or soils, or riparian associated wetland fens.

Alternatives: 2, 3, and 5 Buffer (RAW): Will be identified by IDT during layout. 

Protection: Category A 

Stream#: Lake-A2 Class: I Flagging: B/W C- Type: L

Concerns: none 

Buffer (RMA): Class I for Lake-1 greater of 100 horizontal feet or to the extent of the flood plain, riparian vegetation or soils, 

riparian associated wetland fens, or one site-potential tree height. 

Alternatives: 2, 3, and 5 Buffer (RAW): no review needed

Protection: Category A 

Temporary roads for Unit 116: Alternatives 2, 3, and 5 -- No known stream crossings. The temporary roads have not been 

field verified and will be surveyed before implementation. If any stream crossings are found, crossings structures and 

locations will be approved by USFS, in consultation with fisheries biologist or hydrologist, prior to construction (BMP 14.17). 

During construction of temporary roads implement BMPs 12.17, 13.10, 13.11, 13.16, 14.3, and 14.5.

 GEOLOGY/KARST:

No Concerns

 HERITAGE RESOURCES:

This unit was investigated per the third amended interagency Programmatic Agreement (PA) for historic properties. As 

specified by the PA, any potential adverse effect on historic properties (if any) was mitigated and portions of the Area of 

Potential Effect will be monitored by a qualified heritage specialist during and/or after actual ground disturbance.

 SCENERY:

The Scenic Integrity Objective (SIO) for this unit is mostly Very Low, but it includes 5 acres of Moderate. Most of the uniit is 

in Modified Landscape LUD along the Control Lake-Thorne Bay highway, but a portion is in Timber Production as well. The 

original unit extended to the edge of the highway; however, the unit is now screened from the highway by legacy and TTRA 

buffers (see unit card map and silvicultural prescription). As a result most harvest is at least 150-200 ft from the highway. 

As noted in the prescription, the visual buffer or screen will be designed for wind firmness. Clearing for the temporary road, 

which is accessed by the highway, will be visible by passing vehicles, but is largely at right angles to the road and will not be 

visible from approaching vehicles. Because visual absorption capability is moderate to high, visible openings can be 15 

acres or more. No concerns with unit as planned.

 RECREATION:

No Concerns

 SOILS/WETLANDS:

Slope range from less than 10 to 45%. The areas of steep slope are limited and can be operated around. The entire 16-acre 

unit is forested wetland (BMP 12.5). The soils and wetlands are suitable for shovel yarding. Shovel yarding should follow 

BMPs 12.5, 13.2 and 13.9. Specifically, the shovel operator should avoid the small non-forested areas of the unit to prevent 

rutting. Slopes over 25% gradient may not be suitable for shovel yarding under some soil moisture conditions. Use care 

when approving shovel yarding on slopes over 25% gradient. Avoid track slippage and rutting.

A temporary road will impact about 3/4 acre of forested wetland within the unit. Wetland avoidance was not practicable due 
Unit 116

to the abundance of forested wetland. Provide adequate cross drainage, remove structures, and close the road after harvest 

(BMP 14.9) (33 CFR BMPs 4, 5, 6).

 WILDLIFE:

Unit includes average snow deer winter range (nearly entire unit). Unit is adjacent to Honker large OGR complex. It is in an 

area identified by the interagency OGR review team as a low elevation corridor between the Honker large OGR and salt 

water at Salt Chuck (south of the project). Legacy standard and guideline applies in this VCU; Legacy acres cover some deer 

winter range.

Alternative 4: Unit dropped because location coincides with the biologically preferred small OGR.
SR

RR

929

2.1R

2.3R

1.6L.3R

1.6L 2. R

1.6L.1R

2.4R

2.2R

1.6L

LAKE A2

1

1.5L

1989

2000

2005

1989

115

116

117

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 116 Alternative 2 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Partial Cut

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

597.2

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt2.mxd 14 July 2012

RR

SR
SR

RR

929

2.1R

2.3R

1.6L.3R

1.6L 2. R

1.6L.1R

2.4R

2.2R

1.6L

LAKE A2

1

1.5L

1989

2000

2005

1989

115

116

117

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 116 Alternative 3 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

597.2

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt3.mxd 14 July 2012

RR

SR
SR

RR

929

2.1R

2.3R

1.6L.3R

1.6L 2. R

1.6L.1R

2.4R

2.2R

1.6L

LAKE A2

1

1.5L

1989

2000

2005

1989

115

116

117

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 116 Alternative 5 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Sytematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

597.2

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt5.mxd 14 July 2012

RR

SR
Unit 117

Total Unit

Acres:

14.6 Prescription: Clearcut

VCU

Number:

597.

1, 

597.

2

Harvest

System:

Cable

Net Harvest

Volume

(MBF):

335

LUD:

Modified Landscape

 SILVICULTURE:

Existing condition: This unit has old-growth stand structure with a western hemlock and western redcedar overstory. Sitka 

spruce are widely scattered throughout. In the western hemlock mistletoe varies from moderate to heavy and overall stem rot 

is moderate but high in larger diameter trees. In the western redcedar defect is average or less with medium to smaller 

diameter trees. Windthrow risk is moderate. All previous harvest areas adjacent to or near this unit have met green-up with 

regeneration over 5 feet tall. This meets NFMA requirements for no longer being considered openings.

Silvicultural Objective/Desired Condition: The desired condition for this stand is a highly productive, healthy, windfirm stand 

grown for timber management that retains residual trees as needed to meet standards and guides or other objectives.

Silvicultural Prescription: Even-age Management - Clearcut

Approximately 4 acres of this unit is adjacent to the Control Lake-Thorne Bay highway and due to the combination of Scenic 

Viewshed LUD and foreground distance zone, requires visual mitigation. In order to meet this requirement, legacy was 

placed between the unit and the highway to screen the unit from view. 

This stand is being recommended for harvest at this time because it is not expected to obtain the desired condition given the 

current growth trajectory. This stand is mature with moderate to heavy stem decay and defect resulting in a situation where 

stand growth is being offset by decay. Even-aged clear cutting is being prescribed to preclude or minimize the risk of 

windthrow post harvest, promote natural regeneration by opening up the canopy, and minimize defect and disease in the 

future stand to the maximum extent possible. 

The legacy standard and guide applies in VCU 5971. This requires that approximately 7 acres of productive old growth 

representative of the overall composition of the planned harvest area be maintained indefinitely. The required legacy 

structure is planned to provide screening from highway, reduce sensitive plant populations in unit, and limit required road 

length. Mapped legacy totals about 8 acres. Any adjustments to the planned unit during implementation must consider the 

planned acreage and location of legacy.

 TIMBER/LOGGING:

This unit is planned for uphill and downhill cable yarding to landings on the proposed temporary road.

 ENGINEERING/ROADS:

Unit is accessed by a proposed temporary road, totaling 900 feet, as displayed on the unit card. Temporary road is 

accessed by state highway and will require a driveway permit to allow construction.

 BOTANY:

Units 117 and 116 directly impact about 1/3 of a large lesser round-leaved orchid (sensitive plant) population consisting of 80 

individiuals. Legacy was placed to cover much of this overlap in both units. Other populations are located nearby, but well 

outside of these harvest units.

This unit would indirectly affect portions of this lesser round-leaved orchid population located outside of unit and in legacy.

 FISHERIES:

Unit

Number 117 Alternatives 2, 3, 5

Summary of Concerns, Responses, BMPs and Mitigation

 INVASIVE SPECIES:

Infestation of Canada thistle located near the unit, just north of the highway. This infestation has been treated in the past; 

monitoring and follow-up treatments are recommended.
Unit 117

Streams are tributaries to Rio Beaver Creek.

Stream#: 1.5L Class: II Flagging: B/W C- Type: HCO, MMO

Concerns: none 

Buffer (RMA): Class II for HCO greater of 100 feet or to the top of the side-slope break. Class II for MMO greater of 120 feet, 

flood plain, riparian vegetation or soils, or riparian associated wetland fens. 

Alternatives: 2, 3, and 5 Buffer (RAW): no review needed

Protection: Category A 

Temporary roads for Unit 117: Alternatives 2, 3, and 5 -- No known stream crossings. The temporary roads have not been 

field verified and will be surveyed before implementation. If any stream crossings are found, crossings structures and 

locations will be approved by USFS, in consultation with fisheries biologist or hydrologist, prior to construction (BMP 14.17). 

During construction of temporary roads implement BMPs 12.17, 13.10, 13.11,13.16, 14.3, and 14.5.

 GEOLOGY/KARST:

No Concerns

 HERITAGE RESOURCES:

This unit was investigated per the third amended interagency Programmatic Agreement (PA) for historic properties. As 

specified by the PA, any potential adverse effect on historic properties (if any) was mitigated and portions of the Area of 

Potential Effect will be monitored by a qualified heritage specialist during and/or after actual ground disturbance.

 SCENERY:

The Scenic Integrity Objective (SIO) for this unit is mostly Moderate (14 acres), but it includes 2 acres of Very Low. The uniit 

is entirely in Modified Landscape LUD along the Control Lake-Thorne Bay highway. The original unit extended to the edge of 

the highway; however, the unit is now screened from the highway by legacy (see unit card map and silvicultural prescription). 

As a result, most harvest is at least 100-150 ft from the highway. As noted in the prescription, the visual buffer or screen will 

be designed for wind firmness. Clearing for the temporary road, which is accessed by the highway, will be visible by passing 

vehicles, but is largely at right angles to the road and will not be visible from approaching vehicles. Because visual 

absorption capability is moderate to high, visible openings can be 15 acres or more. No concerns with unit as planned.

 RECREATION:

No concerns

 SOILS/WETLANDS:

Slope range from less than 10 to 55%. Forested wetlands are dominant. A minimum of partial suspension would meet soil 

and wetland resource concerns (BMPs 12.5, 13.5, and 13.9).

Based on GIS analysis, the proposed temporary road does not traverse any wetlands.

 WILDLIFE:

Unit includes average snow deer winter range (nearly entire unit), some of which is also deep snow marten habitat/deer 

winter range (nearly entire unit except northern lobe). Unit is adjacent to Honker large OGR complex. It is in an area 

identified by the interagency OGR review team as a low elevation corridor between the Honker large OGR and salt water at 

Salt Chuck (south of the project). Legacy standard and guideline applies in VCU 5972; Legacy acres cover some deer winter 

range and marten habitat.

Alternative 4: Unit dropped because location coincides with the biologically preferred small OGR.
SR

RR

929

1.6L.3R

1.6L 2. R

1

LAKE A2 1.6L.1R

1.5L

1989

1989

115

116

117

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 117 Alternative 2 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Partial Cut

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

597.1,597.2

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt2.mxd 14 July 2012

RR

SR
SR

RR

929

1.6L.3R

1.6L 2. R

1

LAKE A2 1.6L.1R

1.5L

1989

1989

115

116

117

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 117 Alternative 3 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

597.1,597.2

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt3.mxd 14 July 2012

RR

SR
SR

RR

929

1.6L.3R

1.6L 2. R

1

LAKE A2 1.6L.1R

1.5L

1989

1989

115

116

117

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 117 Alternative 5 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Sytematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

597.1,597.2

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt5.mxd 14 July 2012

RR

SR
Unit 118

Total Unit

Acres:

13.2 Prescription: Clearcut

VCU

Number:

586 Harvest

System:

Shovel

Net Harvest

Volume

(MBF):

395

LUD:

Modified Landscape

 SILVICULTURE:

Existing condition: This unit has old-growth stand structure. The overstory is composed of mostly western hemlock, western 

redcedar and Sitka spruce within the western half of the unit. Low volume, high defect, red and Alaska-cedar dominates the 

east side. Alaska-cedar decline is occurring in the eastern portion of the unit as well. The overstory overall has high defect 

with stem decay and some stem form being of concern. Mistletoe is present, but at low levels. Windthrow risk is moderate. 

The unit has adjacent past harvest from within the last few years. This harvest area is adjacent to the northwest corner of the 

unit and does not meet green-up requirements. The combined acres of this past harvest and the proposed unit are only 

approximately 25 acres and therefore would be in compliance with NFMA for opening size. 

Silvicultural Objective/Desired Condition: The desired condition for this stand is a highly productive, healthy, windfirm stand 

grown for timber management that retains residual trees as needed to meet standards and guides or other objectives.

Silvicultural Prescription: Even-age Management - Clearcut

This stand is being recommended for harvest at this time because it is not expected to obtain the desired condition given the 

current growth trajectory. This stand is mature with heavy stem decay and defect resulting in a situation where stand growth 

is being offset by decay. Even-aged clear cutting is being prescribed to preclude or minimize the risk of windthrow post 

harvest, promote natural regeneration by opening up the canopy, and minimize defect and disease in the future stand to the 

maximum extent possible. 

The legacy standard and guide applies in this VCU. This requires that approximately 6 acres of productive old growth 

representative of the overall composition of the planned harvest area be maintained indefinitely. The required legacy 

structure is planned to reduce road length, block up POG, and build off RMA. Total mapped legacy is about 6 acres. Any 

adjustments to the planned unit during implementation must consider the planned acreage and location of legacy.

 TIMBER/LOGGING:

This unit is planned for shovel yarding to the proposed temporary road.

 ENGINEERING/ROADS:

Unit is accessed by a proposed temporary road, totaling 900 feet, as displayed on the unit card.

 BOTANY:

No Concerns

 FISHERIES:

Streams are tributaries to Power Lake and Thorne Bay. Streams A1, A2, and Lake-A1 characteristics do not include projectspecific, field-verified, information.

Stream#: 1 Class: I, II, IV Flagging: B/W, G/W C- Type: PAO, HCO

Concerns: none 

Buffer (RMA): Class I for PAO greater of 100 feet, flood plain, riparian vegetation or soils, or riparian associated wetland 

fens. Class II for HCO greater of 100 feet or to the top of the side-slope break. Class IV HCO none.

Alternatives: 2, 3, 4 and 5 Buffer (RAW): no review needed

Protection: Category A and C 

Stream#: A1 Class: II Flagging: B/W, G/W C- Type: HCD

Concerns: none 

Buffer (RMA): Class II for HCD greater of 100 feet or to the top of the side-slope break. 

Alternatives: 2, 3, 4 and 5 Buffer (RAW): no review needed

Protection: Category A 

Unit

Number 118 Alternatives 2, 3, 4, 5

Summary of Concerns, Responses, BMPs and Mitigation

 INVASIVE SPECIES:

No Concerns
Unit 118

Stream#: A2 Class: I Flagging: B/W C- Type: HCM 

Concerns: none 

Buffer (RMA): Class I for HCM greater of 100 feet or to the top of the side-slope break. 

Alternatives: 2, 3, 4 and 5 Buffer (RAW): no review needed

Protection: Category A 

Stream#: Lake-A1 Class: I Flagging: B/W C- Type: L

Concerns: blowdown and steep side-slopes.

Buffer (RMA): Class I for Lake-1 greater of 100 horizontal feet or to the extent of the flood plain, riparian vegetation or soils, 

riparian associated wetland fens, or one site-potential tree height. 

Alternatives: 2, 3, and 5 Buffer (RAW): no review needed

Protection: Category A 

Temporary roads for Unit 118: All Alternatives -- No known stream crossings. The temporary roads have not been field 

verified and will be surveyed before implementation. If any stream crossings are found, crossings structures and locations 

will be approved by USFS, in consultation with fisheries biologist or hydrologist, prior to construction (BMP 14.17). During 

construction of temporary roads implement BMPs 12.17, 13.10, 13.11, 13.16, 14.3, and 14.5.

 GEOLOGY/KARST:

No Concerns

 HERITAGE RESOURCES:

This unit was investigated per the third amended interagency Programmatic Agreement (PA) for historic properties. As 

specified by the PA, any potential adverse effect on historic properties (if any) was mitigated and portions of the Area of 

Potential Effect will be monitored by a qualified heritage specialist during and/or after actual ground disturbance.

 SCENERY:

The Scenic Integrity Objective (SIO) for this unit is Very Low . It is entirely in Modified Landscape LUD but is considered Not 

Seen. There are no scenery resource concerns.

 RECREATION:

No concerns

 SOILS/WETLANDS:

Slopes generally range from nearly level to less than 70%. Slopes average 30 to 35%. Small areas of slopes greater than 

72% occur within the unit on knobs and rock outcrops. These are very small areas less than 1/8th acre in size. These areas 

are suitable for harvest due to their small size and stability. It may be possible to operate the shovel around the knobs as 

long as care us taken on slopes over 25%. Forested wetlands and small sedge fens are located in between the rock outcrops 

and knobs in the drainage ways in the unit. The soils and wetlands are suitable for shovel yarding. Shovel yarding should 

follow BMPs 12.5, 13.2 and 13.9. Specifically, the shovel operator should avoid the small non-forested areas of the unit to 

prevent rutting. Slopes over 25% gradient may not be suitable for shovel yarding under some soil moisture conditions. Use 

care when approving shovel yarding on slopes over 25% gradient. Avoid track slippage and rutting.

Based on GIS analysis, the proposed temporary road does not traverse any wetlands.

 WILDLIFE:

Unit includes average snow deer winter range (entire unit). Legacy standard and guideline applies in this VCU; Legacy acres 

cover some deer winter range.
2030796

2030798

2030790

1

LAKE A1

A1

2010

1997 1988

1988

1997

1989

1988

1963

1989

1997

1963

1989

1989

1963

1988

2010

2005

2005

118

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 118 Alternative 2 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Partial Cut

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

586,598

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt2.mxd 14 July 2012

RR

SR
2030796

2030798

2030790

1

LAKE A1

A1

2010

1997 1988

1988

1997

1989

1988

1963

1989

1997

1963

1989

1989

1963

1988

2010

2005

2005

118

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 118 Alternative 3 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

586,598

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt3.mxd 14 July 2012

RR

SR
2030796

2030798

2030790

1

LAKE A1

A1

2010

1997 1988

1988

1997

1989

1988

1963

1989

1997

1963

1989

1989

1963

1988

2010

2005

2005

118

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 118 Alternative 4 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

586,598

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt4.mxd 20 March 2012

RR

SR
2030796

2030798

2030790

1

LAKE A1

A1

2010

1997 1988

1988

1997

1989

1988

1963

1989

1997

1963

1989

1989

1963

1988

2010

2005

2005

118

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 118 Alternative 5 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Sytematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

586,598

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt5.mxd 14 July 2012

RR

SR
Unit 119

Total Unit

Acres:

87.1 Prescription: Clearcut

VCU

Number:

579 Harvest

System:

Cable, Shovel

Net Harvest

Volume

(MBF):

1,782

LUD:

Modified Landscape, 

Recreation River

 SILVICULTURE:

Existing Condition: Parts of unit 119 have even-aged characteristics with signs of 80-100 year old stumps. This appears 

consistent with the earlier harvest along the Thorne River to the south. It is possible that the southern and eastern portion of 

the stand were partially cut and has suffered pockets of blowdown. The western portion of the unit is more typical old-growth 

stand structure. The overstory consists primarily of western hemlock in an even distribution. Sitka spruce is common where 

past harvest occurred as well as in the western edges of unit. Mistletoe is heavy with some moderate patches. Mistletoe may 

have been proliferated by a heavy occurrence in the overstory remaining after partial harvest and or blowdown. Defect is 

moderate overall. Windthrow continues to influence stand structure in this unit. Both past and recent evidence was noted. 

Windthrow risk is high. All adjacent stands meet NFMA requirements for no longer being considered openings. 

Silvicultural Objective/Desired Condition: The desired condition for this stand is a highly productive, healthy, windfirm stand 

grown for timber management that retains residual trees as needed to meet standards and guides or other objectives

Silvicultural Prescription: Even-age Management - Clearcut

This stand is being recommended for harvest at this time because it is not expected to obtain the desired condition given the 

current growth trajectory. This stand is mature with moderate stem decay and defect resulting in a situation where stand 

growth is being offset by decay. Even-aged clear cutting is being prescribed to preclude or minimize the risk of windthrow 

post harvest, promote natural regeneration by opening up the canopy, and minimize defect and disease in the future stand to 

the maximum extent possible. 

The legacy standard and guide applies in this VCU. This requires that approximately 39 acres of productive old growth 

representative of the overall composition of the planned harvest area be maintained indefinitely. The required legacy 

structure is planned to coincide with areas dropped for other resource concerns, along with RMAs. A total of about 44 acres 

of legacy are mapped. Any adjustments to the planned unit during implementation must consider the planned acreage and 

location of legacy.

 TIMBER/LOGGING:

This unit is planned for a combination of shovel and cable yarding. Cable settings are planned for uphill and downhill yarding 

to landings on the proposed temporary roads. Shovel settings are planned for yarding to the the proposed temporary roads.

 ENGINEERING/ROADS:

Unit is accessed by two proposed temporary roads, totaling 3900 feet, as displayed on the unit card.

 BOTANY:

No Concerns

 FISHERIES:

Unit

Number 119 Alternatives 2, 3, 4, 5

Summary of Concerns, Responses, BMPs and Mitigation

 INVASIVE SPECIES:

One infestation of white sweet clover located along highway about 3/4 mile southeast of unit. Population has been treated; 

monitor and treat again, if plants are observed. This is the only population known in project area.
Unit 119

Streams are tributaries to Falls Creek and Gravelly Creek. 

Stream#: 2 (Falls Creek) Class: I Flagging: B/W C- Type: LCM, MMM, MCS

Concerns: blowdown

Buffer (RMA): Class I for LCM and MCS greater of 100 feet or to the top of the side-slope break. Class I for MMM greater of 

120 feet, flood plain, riparian vegetation or soils, or riparian associated wetland fens. 

Alternatives: 2, 3, 4, and 5 Buffer (RAW): Will be identified by IDT during layout.

Protection: Category A 

Stream#: 1.2L Class: I, II, IV Flagging: B/W, G/W C- Type: MMO, HCO

Concerns: none

Buffer (RMA): Class I for MMO greater of 120 feet, flood plain, riparian vegetation or soils, or riparian associated wetland 

fens. Class II for HCO greater of 100 feet or to the top of the side-slope break. Class IV for HCO none.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed

Protection: Category A and C 

Stream#: 1.1L Class: I, III Flagging: B/W, O/W C- Type: HCLw, HCM

Concerns: none

Buffer (RMA): Class I for HCLw greater of 100 feet or to the top of the side-slope break. Class III for HCM to the top of the 

side-slope break.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed

Protection: Category A and B 

All other streams in unit: Class: IV Flagging: G/W C- Type: HC 

Buffer (RMA): none Buffer (RAW): no review needed

Protection: Category C 

Temporary roads for Unit 119: All Alternatives -- No known stream crossings. The temporary roads have not been field 

verified and will be surveyed before implementation. If any stream crossings are found, crossings structures and locations 

will be approved by USFS, in consultation with fisheries biologist or hydrologist, prior to construction (BMP 14.17). During 

construction of temporary roads implement BMPs 12.17, 13.10, 13.11, 13.16, 14.3, and 14.5.

 GEOLOGY/KARST:

No Concerns

 HERITAGE RESOURCES:

This unit was investigated per the third amended interagency Programmatic Agreement (PA) for historic properties. As 

specified by the PA, any potential adverse effect on historic properties (if any) was mitigated and portions of the Area of 

Potential Effect will be monitored by a qualified heritage specialist during and/or after actual ground disturbance. The 

physical boundaries of this unit are not to be modified (expanded) without consulting the Forest Service Heritage specialist.

 SCENERY:

The Scenic Integrity Objective (SIO) for this unit iincludes 60 acres of Low and 27 acres of Moderate. It is located north of 

the Control Lake-Thorne Bay highway mostly in Modified Landscape LUD, but its southern portion is in Recreational River 

LUD. However, a large portion of the southern portion of the original unit is in legacy and not planned for harvest.. Therefore, 

the nearest harvest to the highway is about 500 ft north and the nearest harvest to the Thorne River (potential recreational 

river) is about 1,000 ft north. Therefore, there are no scenery resource concerns.

 RECREATION:

Harvest in this unit would be heard from Gravelly Creek Picnic area. Although this unit is within close proximity to Gravelly 

Creek, the picnic area is oriented away from the road and the unit and there is a vegetative buffer so it is unlikely that harvest 

in this unit would change how people use the picnic area.

 SOILS/WETLANDS:

Slopes range from 10 to 70%. The 70% slopes occur in a small area in the northern tip of the unit. Forested wetlands are 

located near the proposed temporary road to the east. Shovel yarding is only suitable in the center-southeast portion of the 

unit. The soils and wetlands are suitable for a minimum partial suspension yarding or shovel yarding. All logging systems 

should follow BMPs 12.5, 13.2 and 13.9. Specifically, the shovel operator should avoid the small non-forested areas of the 

unit to prevent rutting. Slopes over 25% gradient may not be suitable for shovel yarding under some soil moisture conditions. 

Use care when approving shovel yarding on slopes over 25% gradient. Avoid track slippage and rutting.

Based on GIS analysis, the proposed temporary road does not traverse any wetlands, though forested wetlands have been 

identified in the area of the proposed road.
Unit 119

 WILDLIFE:

Unit includes average snow deer winter range (entire unit), some of which is also deep snow marten habitat/deer winter 

range (eastern 1/2 of unit). Legacy standard and guideline applies in this VCU; Legacy acres cover some deer winter range.
RR

3000100

3017110

3015100

3017000

929

2.2L.1R.2L

2

2. L.1R

1.1R 2.2 R

1.1L

2.2L.1R

2.2L. 1 R.1L

1.1L.1L

1.1L

2.2L.1R

3

1

1.2L

2

2

1966

1966

1972 1966

1963

1972

1973

1972

119

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 119 Alternative 2 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Partial Cut

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

579

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt2.mxd 14 July 2012

RR

SR
RR

3000100

3017110

3015100

3017000

929

2.2L.1R.2L

2

2. L.1R

1.1R 2.2 R

1.1L

2.2L.1R

2.2L. 1 R.1L

1.1L.1L

1.1L

2.2L.1R

3

1

1.2L

2

2

1966

1966

1972 1966

1963

1972

1973

1972

119

517

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 119 Alternative 3 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

579

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt3.mxd 14 July 2012

RR

SR
RR

929

3017000

3015100

3017110

3000100

2.2L.1R

2.2L. 1 R.1L

1.1L.1L

1.1L

2.2L.1R

3

1

1.2L

2

2

2.2L.1R.2L

2

2. L.1R

1.1R 2.2 R

1.1L

1966

1966

1972 1966

1963

1972

1973

1972

517

517

517 517

119

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 119 Alternative 4 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

579

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt4.mxd 20 March 2012

RR

SR
RR

929

3017000

3015100

3017110

3000100

2.2L.1R

2.2L. 1 R.1L

1.1L.1L

1.1L

2.2L.1R

3

1

1.2L

2

2

2.2L.1R.2L

2

2. L.1R

1.1R 2.2 R

1.1L

1966

1966

1972 1966

1963

1972

1973

1972

517

517

517 517

119

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 119 Alternative 5 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Sytematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

579

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt5.mxd 14 July 2012

RR

SR
Unit 120

Total Unit

Acres:

19.5 Prescription: Clearcut

VCU

Number:

579 Harvest

System:

Shovel

Net Harvest

Volume

(MBF):

323

LUD:

Modified Landscape, 

Timber Production

 SILVICULTURE:

Existing Condition: This unit has old-growth stand structure. The overstory consists primarily of western hemlock and a 

mixture of western redcedar and Alaska-cedar. Sitka spruce is present, but less abundant and more widely scattered. Stem 

rot is high to very high. The mistletoe rating is low. Windthrow risk is moderate. Past harvest has occurred along the entire 

eastern and southern boundary. These past harvest areas have met green-up with regeneration over 5' tall.

Silvicultural Objective/Desired Condition: The desired condition for this stand is a highly productive, healthy, windfirm stand 

grown for timber management that retains residual trees as needed to meet standards and guides or other objectives.

Silvicultural Prescription: Even-age Management - Clearcut

This stand is being recommended for harvest at this time because it is not expected to obtain the desired condition given the 

current growth trajectory. This stand is mature with heavy stem decay and defect resulting in a situation where stand growth 

is being offset by decay. Even-aged clear cutting is being prescribed to preclude or minimize the risk of windthrow post 

harvest, promote natural regeneration by opening up the canopy, improve site productivity through increased soil 

temperature and minimize defect and disease in the future stand to the maximum extent possible. 

The legacy standard and guide applies in this VCU; however, the unit is less than 20 acres therefore no legacy set-aside is 

required.

 TIMBER/LOGGING:

This unit is planned for shovel yarding to the proposed temporary road, and existing NFS road 3017100.

 ENGINEERING/ROADS:

Unit is accessed by a proposed temporary road, totaling 500 feet, as displayed on the unit card.

 BOTANY:

No Concerns

 FISHERIES:

Streams are tributaries to Falls Creek. 

Stream#: 2 	Class: III Flagging: O/W C- Type: HCM, HCO, AFM

Concerns: none

Buffer (RMA): Class III for HCM and HCO to the top of the side-slope break. Class III for AFM greater of 140 feet or active 

portion of the alluvial fan.

Alternatives: 2, 3, 4, and 5 Buffer (RAW): no review needed

Protection: Category B 

All other streams in unit: Class: IV Flagging: G/W C- Type: HC 

Buffer (RMA): none Buffer (RAW): no review needed

Protection: Category C 

Temporary roads for Unit 120: All Alternatives -- No known stream crossings. The temporary roads have not been field 

verified and will be surveyed before implementation. If any stream crossings are found, crossings structures and locations 

will be approved by USFS, in consultation with fisheries biologist or hydrologist, prior to construction (BMP 14.17). During 

construction of temporary roads implement BMPs 12.17, 13.10, 13.11, 13.16, 14.3, and 14.5.

 GEOLOGY/KARST:

No Concerns

Unit

Number 120 Alternatives 2, 3, 4, 5

Summary of Concerns, Responses, BMPs and Mitigation

 INVASIVE SPECIES:

No Concerns
Unit 120

 HERITAGE RESOURCES:

This unit was investigated per the third amended interagency Programmatic Agreement (PA) for historic properties. As 

specified by the PA, any potential adverse effect on historic properties (if any) was mitigated and portions of the Area of 

Potential Effect will be monitored by a qualified heritage specialist during and/or after actual ground disturbance.

 SCENERY:

The Scenic Integrity Objective (SIO) for this unit is Very Low . It is about half in Timber Production and half in Modified 

Landscape LUD, but is considered Not Seen. There are no scenery resource concerns.

 RECREATION:

No concerns

 SOILS/WETLANDS:

Slopes range from about 4 to 38%. Most slopes are less than 25%. Based on GIS analysis, no wetlands have been mapped 

in the unit. The soils and wetlands are suitable for shovel yarding. Shovel yarding should follow BMPs 12.5, 13.2 and 13.9. 

Slopes over 25% gradient may not be suitable for shovel yarding under some soil moisture conditions. Use care when 

approving shovel yarding on slopes over 25% gradient. Avoid track slippage and rutting.

Based on GIS analysis, the proposed temporary road does not traverse any wetlands.

 WILDLIFE:

Unit includes average snow deer winter range (entire unit). Legacy standard and guideline applies in this VCU, however 

there are no requirements for this unit because it is less than 20 acres.
3017170

3017100

3017200

3017160

2.1R

A1.4L.1L

A1.4L

1

2

A1.4L.3L

A2

2

A1.4L.2L

A1

1963

1971

1996

1966

1995

1995

1995

1995

120

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 120 Alternative 2 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Partial Cut

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

579

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt2.mxd 14 July 2012

RR

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3017170

3017100

3017160

3017100

3017200

2.1R

A1.4L.1L

A1.4L

1

2

A1.4L.3L

A2

2

A1.4L.2L

A1

1963

1971

1996

1966

1995

1995

1995

1995

120

365

518

519

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 120 Alternative 3 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

579

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt3.mxd 14 July 2012

RR

SR
3017170

3017100

3017200

3017160

3017100

2.1R

A1.4L.1L

A1.4L

1

2

A1.4L.3L

A2

2

A1.4L.2L

A1

1963

1971

1996

1966

1995

1995

1995

1995

120

365

518

519

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 120 Alternative 4 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Systematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

579

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt4.mxd 20 March 2012

RR

SR
3017170

3017100

3017200

3017160

2.1R

A1.4L.1L

A1.4L

1

2

A1.4L.3L

A2

2

A1.4L.2L

A1

1963

1971

1996

1966

1995

1995

1995

1995

120

365

518

519

A

A

B

B

C

C

D

D

E

E

F

F

G

G

H

H

I

I

J

J

10 10

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

Unit Number 120 Alternative 5 VCU: 

0 500

Feet

Past Harvest

(Year Origin)

Unsuitable Soils

Riparian Management

Area

Slope > 72%

Other Ownership

Old Growth Habitat LUD

Recreation River LUD

Scenic River LUD

State Highway

National Forest System Road - Open

National Forest System Road - Stored

Non-National Forest 

System Road

Proposed Reconstructed Road

Proposed System Road 

(reopened Decommissioned)

Proposed Temporary Road 

(reopened Decommissioned)

Proposed System Road

Proposed Temporary

Road

Old Growth

Helicopter

Shovel or Cable

Partial Cut

Young Growth

Sytematic Strip Thin

Uniform Crown Thin

Class 1 Stream

Class 2 Stream

Class 3 Stream

Class 4 Stream

Lake

100’ Contour

Eagle Nest Buffer

Legacy

Visual Buffer

Deferred (within

Original Unit

Reconnaissance

Area)

Original Unit 

Reconnaissance 

Area

579

R:\projects_2010\BigThorneEIS\maps\Unitcards\Alt5.mxd 14 July 2012

RR

SR