July 2008

Appendix A 

Waterbody Crossings 
A-1

Table A-1 Waterbody Crossings for the Proposed Action 

State/ County MP Waterbody Name 

Resource 

Concerns 

Crossing 

Method 1

State Water Quality 

Classification 

Colorado 

 Rio Blanco 0.3 Piceance Creek Perennial Open cut with 

Flume 

AqLife Warm2, Rec1b, Agriculture 

 12.2 Dry Fork Piceance 

Creek 

Perennial Open Cut AqLife Cold 2; Rec2;Water 

Supply, Agriculture 

 15.4 Unnamed Open Cut AqLife Cold 2; Rec2;Water 

Supply, Agriculture 

 16.5 Unnamed Open Cut AqLife Cold 2; Rec2;Water 

Supply, Agriculture 

 19.3 White River Perennial, 

threatened and/or 

endangered species 

present; crossing 

width = 75 feet. 

HDD AqLife Cold1; Rec1; Water 

Supply; Agriculture 

 19.7 Powell Park Ditch Open Cut 

 20.4 Unnamed Open Cut AqLife Cold 2; Rec2;Water 

Supply, Agriculture 

 21.2 Jordan Gulch Open Cut AqLife Cold 2; Rec2;Water 

Supply, Agriculture 

 23.6 Unnamed Open Cut AqLife Cold 2; Rec2;Water 

Supply, Agriculture 

 24.9 Unnamed Open Cut AqLife Cold 2; Rec2;Water 

Supply, Agriculture 

 26.5 Oyler Gulch Open Cut AqLife Cold 2; Rec2;Water 

Supply, Agriculture 

 27.6 Unnamed Open Cut AqLife Cold 2; Rec2;Water 

Supply, Agriculture 

 28.9 Unnamed Open Cut AqLife Cold 2; Rec2;Water 

Supply, Agriculture 

 30.3 Unnamed Open Cut AqLife Cold 2; Rec2;Water 

Supply, Agriculture 

 32.9 Unnamed Open Cut AqLife Cold 2; Rec2;Water 

Supply, Agriculture 

 36.1 Strawberry Creek Open Cut AqLife Cold 2; Rec2;Water 

Supply, Agriculture 

 Moffat 40.1 Deep Channel 

Creek 

 Open Cut AqLife Cold 2; Rec2;Water 

Supply, Agriculture 

 40.6 Price Creek Open Cut AqLife Cold 2; Rec2;Water 

Supply, Agriculture 

 41.5 Unnamed Open Cut AqLife Cold 2; Rec2;Water 

Supply, Agriculture 

 41.6 Unnamed Open Cut AqLife Cold 2; Rec2;Water 

Supply, Agriculture 
A-2

Table A-1 Waterbody Crossings for the Proposed Action 

State/ County MP Waterbody Name 

Resource 

Concerns 

Crossing 

Method 1

State Water Quality 

Classification 

 Moffat (Con’t) 49.4 Pine Tree Gulch Open Cut AqLife Warm2, Rec2, Agriculture 

49.9 

and 

52.1 

Deception Creek Open Cut AqLife Warm2, Rec2, Agriculture 

 58.9 Maybell Ditch Open Cut 

 59.5 Yampa River Perennial, 

threatened and/or 

endangered species 

present; crossing 

width = 140 feet. 

HDD AqLife Warm1; Rec1; Water 

Supply; Agriculture 

 60.9 Aqueduct Open Cut 

 62.1 Wildcat Draw Open Cut AqLife Warm2, Rec2, Agriculture 

 64.6 Mud Spring Gulch Open Cut AqLife Warm2, Rec2, Agriculture 

 69.0 West Prong, Spring 

Creek 

 Open Cut AqLife Warm2, Rec2, Agriculture 

 69.7 West Prong, Spring 

Creek 

 Open Cut AqLife Warm2, Rec2, Agriculture 

 73.2 Unnamed Open Cut AqLife Cold 2; Rec2;Water 

Supply, Agriculture 

 78.0 Greasewood Gulch Open Cut AqLife Cold 2; Rec2; Agriculture 

 79.3 Unnamed Open Cut AqLife Cold 2; Rec2; Agriculture 

 82.7 Unnamed Open Cut AqLife Cold 2; Rec2; Agriculture 

 83.4 Unnamed Open Cut AqLife Cold 2; Rec2; Agriculture 

 84.5 Unnamed Open Cut AqLife Cold 2; Rec2; Agriculture 

 85.3 Unnamed Open Cut AqLife Cold 2; Rec2; Agriculture 

 85.6 Unnamed Open Cut AqLife Cold 2; Rec2; Agriculture 

 88.2 Unnamed Open Cut AqLife Cold 2; Rec2; Agriculture 

 91.0 Unnamed Open Cut AqLife Cold 2; Rec2; Agriculture 

 93.6 Little Snake River Perennial, 

threatened and/or 

endangered 

species; crossing 

width = 40 feet. 

HDD AqLife Cold1; Rec1; Water 

Supply; Agriculture 

Wyoming 

 Sweetwater 96.1 Cherokee Creek Open Cut 2C 

 96.8 Cherokee Draw Open Cut 2C 

 98.4 East Fork, Cherokee 

Creek 

 Open Cut 2C 

 100.4 Cedar Breaks Draw Open Cut 

 103.1 Unnamed Open Cut 

 105.1 Sand Creek Open cut with 

Flume 

3B 
A-3

Table A-1 Waterbody Crossings for the Proposed Action 

State/ County MP Waterbody Name 

Resource 

Concerns 

Crossing 

Method 1

State Water Quality 

Classification 

Sweetwater (Con’t) 107.7 Willow Creek Open cut with 

Flume 

3B 

 108.0 Unnamed Open Cut 

 109.5 Unnamed Open Cut 

 119.1 Windmill Draw Open Cut 3B 

 126.8 Barrel Springs Draw Open Cut 3B 

130.0 – 

131.0 

North Barrel Springs 

Draw and 

Tributaries 

 Open Cut 3B 

 133.1 Unnamed Open Cut 

 133.5 Unnamed Open Cut 

 134.2 Unnamed Open Cut 

 135.5 Unnamed Open Cut 

136.7 – 

136.9 

Unnamed 

Ephemerals 

 Open Cut 

1

 Open cut crossings will employ a flume if water is present at the time of construction. 

Colorado State Water Quality Classification Designations: 

• AqLife Cold 1 = (subset of aquatic life) waters capable of sustaining a wide variety of coldwater biota, including sensitive species, where 

physical habitat, water flows or levels, and water quality result in no substantial impairments. 

• AqLife Cold 2 = (subset of aquatic life) waters that are not capable of sustaining a wide variety of coldwater biota, including sensitive 

species, due to physical habitat, water flows or levels, or uncorrectable water quality conditions that result in substantial impairment of 

the abundance and diversity of species. 

• AqLife Warm 1 = (subset of aquatic life) waters capable of sustaining a wide variety of warmwater biota, including sensitive species, 

where physical habitat, water flows or levels, and water quality result in no substantial impairment. 

• AQLife Warm 2 = (subset of aquatic life) waters not capable of sustaining a wide variety of warmwater biota, including sensitive species, 

due to physical habitat, water flows or levels, or uncorrectable water quality conditions. 

• Rec1 = (subset of recreation) waters suitable or intended to become suitable for recreational activities (e.g., swimming, rafting, 

kayaking, tubing). 

• Rec2 = (subset of recreation) waters not suitable or intended to become suitable for primary contact recreation uses, but are suitable for 

wading, fishing, and other streamside activities. 

• Agriculture = waters suitable or intended to become suitable for irrigation of crops and not hazardous for use by livestock. 

• Water Supply = waters suitable or intended to become suitable for potable water supplies. 

Wyoming State Water Quality Classification Designations: 

Statewide beneficial use classes include the support of drinking water, game fish, nongame fish, fish consumption, other aquatic life, 

recreation, wildlife, agriculture, industry, and scenic values. 

• 2C = All beneficial uses are supported except drinking water and game fish. 

• 3B = All beneficial uses are supported except drinking water, game fish, nongame fish, and fish consumption. 
July 2008

Appendix B 

Soil Types 
B-1

Table B-1 Soil Types Along the Proposed Route 

MUID Soil Name 

Colorado SSURGO 

1 ABOR CLAY LOAM, 5 TO 30 PERCENT SLOPES 

4 ABSHER LOAM, 3 TO 8 PERCENT SLOPES 

5 BADLAND 

6 BARCUS CHANNERY LOAMY SAND, 2 TO 8 PERCENT SLOPES 

8 BADLAND 

9 BAROID-EGHELM COMPLEX, 0 TO 3 PERCENT SLOPES 

10 BATTLEMENT FINE SANDY LOAM, 0 TO 3 PERCENT SLOPES 

10 BLAZON, MOIST-RENTSAC COMPLEX, 8 TO 65 PERCENT SLOPES 

11 BATTLEMENT SILT LOAM, SALINE, 0 TO 3 PERCENT SLOPES 

11 BOROLLIC CALCIORTHIDS-GUBEN COMPLEX, 6 TO 50 PERCENT SLOPES 

12 BERLAKE SANDY LOAM, 3 TO 12 PERCENT SLOPES 

13 BERLAKE SANDY LOAM, 12 TO 25 PERCENT SLOPES 

14 BERLAKE-MAYSPRINGS COMPLEX, 3 TO 12 PERCENT SLOPES 

15 CASTNER CHANNERY LOAM, 5 TO 50 PERCENT SLOPES 

22 BULKLEY SILTY CLAY, 3 TO 12 PERCENT SLOPES 

24 BULKLEY-QUILT COMPLEX, 12 TO 45 PERCENT SLOPES 

26 COWDREY-TAMPICO LOAMS, 15 TO 50 PERCENT SLOPES 

30 DOLLARD SILTY CLAY LOAM, 8 TO 15 PERCENT SLOPES 

31 DOLLARD SILTY CLAY LOAM, 15 TO 40 PERCENT SLOPES 

32 FLUVAQUENTS, FREQUENTLY FLOODED 

33 FORELLE LOAM, 3 TO 8 PERCENT SLOPES 

34 FORELLE LOAM, 8 TO 15 PERCENT SLOPES 

36 GLENDIVE FINE SANDY LOAM 

39 GUBEN LOAM, 3 TO 8 PERCENT SLOPES 

40 HAGGA LOAM 

41 HAVRE LOAM, 0 TO 4 PERCENT SLOPES 

42 IRIGUL CHANNERY LOAM, 5 TO 50 PERCENT SLOPES 

43 IRIGUL-PARACHUTE COMPLEX, 5 TO 30 PERCENT SLOPES 

44 COWESTGLEN SANDY LOAM, 0 TO 3 PERCENT SLOPES 

45 JERRY-THORNBURGH-RHONE COMPLEX, 8 TO 65 PERCENT SLOPES 

47 COYET-CRESTMAN, MOIST COMPLEX, 20 TO 50 PERCENT SLOPES 

47 KOBAR SILTY CLAY LOAM, 0 TO 3 PERCENT SLOPES 
B-2

Table B-1 Soil Types Along the Proposed Route 

MUID Soil Name 

49 KOBAR SILTY CLAY LOAM, 8 TO 15 PERCENT SLOPES 

51 MERGEL-REDTHAYNE-DOLLARD COMPLEX, 8 TO 65 PERCENT SLOPES 

53 MOYERSON STONY CLAY LOAM, 15 TO 65 PERCENT SLOPES 

61 PATENT LOAM, 3 TO 8 PERCENT SLOPES 

62 PATENT LOAM, 8 TO 15 PERCENT SLOPES 

64 PICEANCE FINE SANDY LOAM, 5 TO 15 PERCENT SLOPES 

70 FLUVAQUENTS AND HAPLAQUOLLS SOILS, FREQUENTLY FLOODED 

70 REDCREEK-RENTSAC COMPLEX, 5 TO 30 PERCENT SLOPES 

71 REDROB LOAM 

73 RENTSAC CHANNERY LOAM, 5 TO 50 PERCENT SLOPES 

74 RENTSAC-MOYERSON-ROCK OUTCROP COMPLEX, 5 TO 65 PERCENT SLOPES 

75 FONCE SANDY LOAM, 1 TO 8 PERCENT SLOPES 

75 RENTSAC-PICEANCE COMPLEX, 2 TO 30 PERCENT SLOPES 

77 FORELLE LOAM, 3 TO 12 PERCENT SLOPES 

78 ROCK OUTCROP 

78 FORELLE LOAM, 12 TO 25 PERCENT SLOPES 

86 GRACOT-MAYBELL COMPLEX, 5 TO 30 PERCENT SLOPES 

89 TISWORTH FINE SANDY LOAM, 0 TO 5 PERCENT SLOPES 

90 GRIEVES-CRESTMAN COMPLEX, 10 TO 40 PERCENT SLOPES 

90 TORRIFLUVENTS, GULLIED 

91 TORRIORTHENTS-ROCK OUTCROP COMPLEX, 15 TO 90 PERCENT SLOPES 

91 GRIEVES-YAMO-CRESTMAN ASSOCIATION, 3 TO 45 PERCENT SLOPES 

92 GRIMM-USTIC TORRIORTHENTS, SHALLOW COMPLEX, 15 TO 45 PERCENT SLOPES 

92 TREMBLES LOAM, WET 

93 GULLIED LAND 

96 VEATCH CHANNERY LOAM, 12 TO 50 PERCENT SLOPES 

99 HESPERUS FINE SANDY LOAM, DRY, 2 TO 15 PERCENT SLOPES 

104 YAMAC LOAM, 2 TO 15 PERCENT SLOPES 

105 IRONSPRINGS LOAMY SAND, 1 TO 15 PERCENT SLOPES 

105 ZOLTAY CLAY LOAM, 1 TO 3 PERCENT SLOPES 

106 ZOLTAY CLAY LOAM, 3 TO 8 PERCENT SLOPES 

107 IRONSPRINGS-MAYSPRINGS-GRETDIVID COMPLEX, 10 TO 20 PERCENT SLOPES 

107 ZOLTAY CLAY LOAM, 8 TO 15 PERCENT SLOPES 
B-3

Table B-1 Soil Types Along the Proposed Route 

MUID Soil Name 

112 KEMMERER-MOYERSON COMPLEX, 20 TO 40 PERCENT SLOPES 

128 MAYBELL SAND, 3 TO 12 PERCENT SLOPES 

129 MAYBELL SAND, 12 TO 45 PERCENT SLOPES 

129 WATER 

130 MAYSPRINGS COARSE SANDY LOAM, 3 TO 12 PERCENT SLOPES 

131 MAYSPRINGS-GRETDIVID COMPLEX, 10 TO 20 PERCENT SLOPES 

134 MORAPOS LOAM, 3 TO 12 PERCENT SLOPES 

149 PINELLI LOAM, 3 TO 12 PERCENT SLOPES 

151 PINELLI LOAM, DRY, 3 TO 8 PERCENT SLOPES 

152 PINRIDGE LOAM, 1 TO 12 PERCENT SLOPES 

153 PRICECREEK CLAY LOAM, 0 TO 4 PERCENT SLOPES 

161 ROCK RIVER SANDY LOAM, 0 TO 3 PERCENT SLOPES 

162 ROCK RIVER SANDY LOAM, 3 TO 12 PERCENT SLOPES 

163 ROCK RIVER SANDY LOAM, 12 TO 25 PERCENT SLOPES 

168 RUEDLOFF SANDY LOAM, 1 TO 8 PERCENT SLOPES 

170 RYAN PARK LOAMY SAND, 3 TO 15 PERCENT SLOPES 

173 RYARK-POWDERWASH COMPLEX, 2 TO 15 PERCENT SLOPES 

178 SIMANNI-RUEDLOFF COMPLEX, 1 TO 10 PERCENT SLOPES 

186 TALAMANTES LOAM, 0 TO 6 PERCENT SLOPES 

193 TISWORTH FINE SANDY LOAM, 0 TO 9 PERCENT SLOPES 

197 TORRIORTHENTS-ROCK OUTCROP, SANDSTONE COMPLEX, 25 TO 75 PERCENT SLOPES 

198 TORRIORTHENTS-ROCK OUTCROP, SHALE COMPLEX, 30 TO 75 PERCENT SLOPES 

199 TORRIORTHENTS-TORRIPSAMMENTS COMPLEX, 12 TO 40 PERCENT SLOPES 

206 USTORTHENTS, FRIGID-BOROLLS COMPLEX, 25 TO 75 PERCENT SLOPES 

209 WEED SANDY LOAM, 1 TO 12 PERCENT SLOPES 

216 YAMO LOAM, 3 TO 15 PERCENT SLOPES 

271 WATER 

Wyoming STATSGO 

s9032 SHELLCREEK-SANDBRANCH-SAGECREEK-HAVRE-GLENDIVE-DEBONE (S9032) 

s9034 VONASON-TRESANO-FRADDLE-FORELLE-FARSON (S9034) 

s9009 RUEDLOFF-PATENT-HAVRE-HAGGA-GLENDIVE-GERRARD-FIRTH-CANBURN (S9009) 

s9010 RENTSAC-MOYERSON-LANGSPRING-DELPHILL-BLAZON-BLACKHALL (S9010) 

s9033 TEAGULF-KANDALY-HUGUSTON-HATERTON (S9033) 
B-4

Table B-1 Soil Types Along the Proposed Route 

MUID Soil Name 

s9035 TRESANO-SHELLCREEK-DINES-CHRISMAN (S9035) 

s1162 SKYWAY-ROCK OUTCROP-LAMPHIER-COCHETOPA (S1162) 

s1164 RYAN PARK-ROCK RIVER-MAYBELL-GRIEVES-CRESTMAN-BERLAKE (S1164) 

s1165 TYPIC TORRIORTHENTS-TRESANO-TISWORTH-RUEDLOFF-KANDALY-DUNUL (S1165) 

s1166 RYARK-ROCK RIVER-MAYSPRINGS-MAYBELL (S1166) 

s1182 ZOLTAY-QUILT-MORAPOS-HESPERUS-BULKLEY-ABOR (S1182) 

s1187 VEATCH-ROCK OUTCROP-RENTSAC-REDCREEK-CASTNER-ABOR (S1187) 

s9008 RYAN PARK-ROCK RIVER-PINELLI-KEMMERER-FORELLE-DIAMONDVILLE-DAHLQUIST 

(S9008) 

s1167 PINELLI-PAGODA-FORELLE-EVANSTON-BULKLEY (S1167) 

s1185 ROCK OUTCROP-RENTSAC-MOYERSON-MIKIM FAMILY-ATCHEE (S1185) 

s1188 YAMAC-RENTSAC-PICEANCE (S1188) 
July 2008

Appendix C 

Noxious Weeds 
C-1 July 2008 

Table C-1 Noxious Weeds Potentially Occurring Along the Proposed Pipeline Route 

 

Colorado Noxious Weed List 

Wyoming Noxious Weed List 

BLM Little Snake FO 

BLM White River FO 

BLM Rawlins FO 

Rio Blanco County, CO 

Moffat County, CO 

Sweetwater County, WY 

Carbon County, WY 

Located During 

2007 Field Surveys1

Common Name Scientific Name 

Quackgrass Agropyron repens B X X X Not Observed 

Camelthorn Alhagi pseudalhagi A Not Observed 

Common Burdock Arctium minus C X X X X X MPs 36.2-39.6, 38.6-

40 

Cheatgrass Bromus tectorum C X Throughout ROW 

Whitetop / Hoary 

Cress 

Cardaria draba B X X X X X X Widespread 

Plumeless Thistle Carduus acanthoides B X X X X X X Not Observed 

Musk Thistle / 

Biannual Thistle 

Carduus nutans B X X X X X X X MP 37-38.5,44.9-

46.1,51.9-52.1 

Spotted Knapweed Centaurea maculosa B X X X X X X X X MPs 25.3-25.4 

Diffuse Knapweed Centaurea diffusa B X X X X X X X Not Observed 

Black Knapweed Centaurea nigra X Not Observed 

Meadow Knapweed Centaurea pratensis A Not Observed 

Russian Knapweed Centaurea repens B X X X X X X X MPs 0.2-0.4, 58.6-

59.5 

Yellow Starthistle Centaurea solstitialis A X Not Observed 

Squarrose knapweed Centaurea virgata A Not Observed 

Rush Skeletonweed Chondrilla juncea A Not Observed 

Oxeye Daisy Chrysanthemum 

leucanthemum 

 X X X Not Observed 
C-2 July 2008 

Table C-1 Noxious Weeds Potentially Occurring Along the Proposed Pipeline Route 

 

Colorado Noxious Weed List 

Wyoming Noxious Weed List 

BLM Little Snake FO 

BLM White River FO 

BLM Rawlins FO 

Rio Blanco County, CO 

Moffat County, CO 

Sweetwater County, WY 

Carbon County, WY 

Located During 

2007 Field Surveys1

Common Name Scientific Name 

Canada Thistle Cirsium arvense B X X X X X X X X MPs 0.2-0.4,10.8-

12.1, 18.9-19.3, 19.5-

19.7, 20.2-20.5,21-

21.2, 23.4-23.5,24.3-

24.5,25.627.3,27.9-

29.1,29.4-33.5, 

36.236.9.38.6-40,40.2-

40.8,40.9-41.6,42.9-

44.7,44.9-46.1,51.9-

52.1,58.6-59.5 

Bull Thistle Cirsium vulgare B X X X MPs 4.5-5.2,5.4-

6,10.8-12.1,12.6-

13,18.9-19.3,20.2-

20.5,22.3-22.6,24.3-

24.5,25.6-27.3,27.9-

29.1,30.6-33.5,33.7-

36.1,36.2-36.9,37-

38.5,38.6-40,40.2-

40.8,42.9-44.7,44.9-

46.1,51.9-52.1,77.8-

77.9 

Field Bindweed Convolvulus arvensis C X X X X X X X Not Observed 

Common Crupina Crupina vulgaris A Not Observed 

Houndstongue Cynoglossum 

officinale 

B X X X X X X X MPs 33.7-36.1,36.2-

36.9,42.9-44.7,44.9-

46.1 

Cypress spurge Euphorbia cyparissias A Not Observed 

Leafy Spurge Euphorbia esula B X X X X X X MPs 12.4,13.6-

15,15.3-15.6,16.5-17.9 

Myrtle Spurge Euphorbia myrsinites A Not Observed 

Skeletonleaf Bursage Franseria discolor A X X X Not Observed 

Curly Cup / Gum 

Weed 

Grindelia squarrosa X Not Observed 
C-3 July 2008 

Table C-1 Noxious Weeds Potentially Occurring Along the Proposed Pipeline Route 

 

Colorado Noxious Weed List 

Wyoming Noxious Weed List 

BLM Little Snake FO 

BLM White River FO 

BLM Rawlins FO 

Rio Blanco County, CO 

Moffat County, CO 

Sweetwater County, WY 

Carbon County, WY 

Located During 

2007 Field Surveys1

Common Name Scientific Name 

Halogeton Halogeton glomeratus C X X X Widespread, 

Wamsutter 

Compressor Station to 

the WyomingColorado border 

Foxtail Barley Hordeum jubatum X Not Observed 

Hydrilla Hydrilla verticallata A Not Observed 

Black Henbane Hyoscyamus niger B X X X X X X MPs 5-8 

Common St. 

Johnswort 

Hypericum perforatum C X X X Not Observed 

Dyer’s Woad Isatis tinctoria A X X X X Not Observed 

Kochia / Fireweed / 

Summer Cypress 

Kochia scoparia X Not Observed 

Perennial 

Pepperweed / Tall 

Whitetop 

Lepidium latifolium B X X X X X X X X MP 40, MPs 92.7-93.6 

Sericea Lespedeza Lespedeza cuneata A Not Observed 

Dalmation Toadflax Linaria dalmatica B X X X X X X Not Observed 

Yellow Toadflax Linaria vulgaris B X X X X Not Observed 

Wyeth Lupine Lupinus wyethii Not Observed 

Purple Loosestrife Lythrum salicaria A X X X Not Observed 

Scotch Thistle Onopordum 

acanthium 

B X X X X MPs 19.5-19.7,21-

21.2,25.6-27.3,27.9-

29.1,29.4-30.5,30.6-

33.5, 33.5-42 

Plains Pricklypear Opuntia polyacantha Not Observed 

African Rue Penganum harmala A Not Observed 

Sulfur Cinquefoil Potentilla recta C X Not Observed 

Russian Thistle / 

Tumbleweed 

Salsola tragus X MPs 58.6-59.5, 116.3-

17.5 
C-4 July 2008 

Table C-1 Noxious Weeds Potentially Occurring Along the Proposed Pipeline Route 

 

Colorado Noxious Weed List 

Wyoming Noxious Weed List 

BLM Little Snake FO 

BLM White River FO 

BLM Rawlins FO 

Rio Blanco County, CO 

Moffat County, CO 

Sweetwater County, WY 

Carbon County, WY 

Located During 

2007 Field Surveys1

Common Name Scientific Name 

Mediterranean Sage Salvia aethiopis A Not Observed 

Giant Salvinia Salvinia molesta A Not Observed 

Tansy Ragwort Senecio jacobaea A Not Observed 

Perennial Sowthistle Sonchus arvensis C X X X Not Observed 

Medusahead Taeniatherium caputmedusae A Not Observed 

Salt Cedar / Tamarisk Tamarix spp. B X X X X X MPs 18.9-19.3,19.5-

19.7,22.3-22.6,40.2-

40.8,92.7-93.6,102.8-

116.3 

Common Tansy Tanacetum vulgare B X X X 

Common Mullein Verbascum thapsus C X X X X X MPs 4.5-5.2,5.4-

6,10.8-12.1,12.6-

13,18.9-19.3,30.6-

33.5,33.7-36.1,36.2-

36.9,42.9-44.7 

1

Source: WWE 2008. 
July 2008

Appendix D 

Special Status Species Identified for the Project 
D-1

Table D-1 Special Status Species Identified for the Piceance Lateral Pipeline Project 

Common Name Scientific Name Status1 Habitat Association 

Potential for 

Occurrence Along 

the Proposed 

Project Route 

Eliminated F

Detailed 

Analysis 

(Yes/No

MAMMALS Spotted bat Euderma maculatum BLM-CO This species inhabits a wide 

variety of habitats from semi-desert shrublands to montane forests. Requires rocky cliffs for suitable roosting habitat. 

Low. Although suitable foraging and roosting habitat occurs along the proposed route, the nearest documented occurrence for this species is 30 miles west of the proposed route in Dinosaur National Monument. 

No. 

Townsend's big-eared bat 

Plecotus townsendii BLM-WY; BLMCO; CO-SPC; 

WY-SPC. 

This species inhabits dry coniferous forests, juniper woodlands, deciduous forests, basins, desert shrublands, and grasslands. Roost sites typically include caves and abandoned mines, but rock outcrops and buildings may also be used. 

Low. No historic roost sites have been documented along the project route. 

No. 

Fringed myotis Myotis thysanodes BLM-WY; BLMCO; WY-SPC. This species primarily inhabits coniferous forests, 

woodland-chaparral, and basin-prairie shrublands, but have been documented in spruce-fir habitats. Roost sites include caves, abandoned mines, rock crevices, and buildings. 

Low. This species could occur within suitable habitats in Colorado and Wyoming. No historic roost sites have been documented along the project route. 

No. 
D-2

Table D-1 Special Status Species Identified for the Piceance Lateral Pipeline Project 

Common Name Scientific Name Status1 Habitat Association 

Potential for 

Occurrence Along 

the Proposed 

Project Route 

Eliminated F

Detailed 

Analysis 

(Yes/No

Yuma myotis Myotis yumanensis BLM-CO. This species inhabits Basinprairie shrublands, riparian 

shrub, grassland, barren areas, cliffs, and rock outcrops. Roosts primarily in human-built structures (buildings and bridges), and occasionally in mines and caves. 

Low. This species could occur within suitable habitats in Colorado and Wyoming. No historic roost sites have been documented along the project route. 

No. 

Long-eared myotis Myotis evotis BLM-WY This species typically occurs 

at mid-elevation coniferous forests such as ponderosa pine and piñon-juniper woodlands. Roosts in caves and mines. 

Low. This species could occur within suitable habitats in Colorado and Wyoming. No historic roost sites have been documented along the project route. 

No. 

Wyoming pocket gopher 

Thomomys clusius BLM-WY; WYSPC. This species is known to occur in upland drier ridge 

tops (gravelly loose soils) in greasewood habitat. Nests in a maternal burrow, and usually feeds underground in a shallow tunnel, pulling roots and plants underground. 

Low. The known range of this species is limited to the southeastern corner of Sweetwater County. 

No. This spehas been fou<5 miles northeast of project route Wyoming. 
D-3

Table D-1 Special Status Species Identified for the Piceance Lateral Pipeline Project 

Common Name Scientific Name Status1 Habitat Association 

Potential for 

Occurrence Along 

the Proposed 

Project Route 

Eliminated F

Detailed 

Analysis 

(Yes/No

Black-footed ferret Mustela nigripes FE; CO-E; WYSPC. Suitable habitat consists of black-tailed prairie dog 

colonies or complexes (80 acres or greater) or Whitetailed prairie dog colonies or complexes (200 acres or greater). Most litters are born in May and emerge from their nursery dens in July. 

Low. The FWS has not block-cleared prairie dog towns in portions of the proposed route in Wyoming and ferret surveys would be required in prairie dog colonies of suitable size and density. 

No. Potentiasuitable habifor this specicould occur within white-tprairie dog colonies of suitable size density. 

White-tailed prairie dog 

Cynomys leucurus BLM-WY; WYSPC. This species occupies basin-prairie and mountainfoothill shrublands, 

sagebrush-grasslands, barren and overgrazed areas, and agricultural areas. 

High. A total of 32 active white-tailed prairie dog colonies were identified along the Project ROW in 2007 (24 in Wyoming and 8 in Colorado). A total of 37 active colonies were identified along the Project ROW in 2008 (10 in Colorado and 27 in Wyoming). 

No. 
D-4

Table D-1 Special Status Species Identified for the Piceance Lateral Pipeline Project 

Common Name Scientific Name Status1 Habitat Association 

Potential for 

Occurrence Along 

the Proposed 

Project Route 

Eliminated F

Detailed 

Analysis 

(Yes/No

Pygmy rabbit Brachylagus 

idahoensis 

WY-SPC. This species occurs in 

southwestern Wyoming, in isolated populations in Lincoln, Uinta, Sweetwater, Sublette, and Fremont Counties. Pygmy rabbits are sagebrush obligate species; primarily found in dense western big sagebrush communities, preferably where at least two other species of sagebrush and forbs occur as well. 

High. This species has been observed in the vicinity of the proposed route in Wyoming. 

No. 

Swift fox Vulpes velox BLM-WY Short-grass and mid-grass 

prairie. Dens typically occur on small hills and ridges. 

None. Yes. The 

proposed rououtside the crange of the fox. 

BIRDS White-faced ibis Plegadis chihi WY-BLM; BLMCO Marshes, wetlands, wet meadows, and streams. 

Nesting habitat usually consists of dense vegetated islands surrounded by water >18” in depth. 

Low. Potentially suitable foraging habitat occurs along Piceance Creek and the White, Yampa, and Little Snake Rivers. The only documented breeding in Moffat County, Colorado, occurs at Brown’s Park NWR. 

No. 
D-5

Table D-1 Special Status Species Identified for the Piceance Lateral Pipeline Project 

Common Name Scientific Name Status1 Habitat Association 

Potential for 

Occurrence Along 

the Proposed 

Project Route 

Eliminated F

Detailed 

Analysis 

(Yes/No

Trumpeter swan Cygnus buccinators WY-BLM Lakes, ponds, marshes, and 

wetlands. 

Low. Yes. No 

documented nesting recorexist for Coloand suitable habitat is lacin the Wyomportion of rouOccurrence would be limto migrating odispersing individuals. 

Barrow’s goldeneye Bucephala islandica BLM-CO This species occupies 

wetlands, lakes, reservoirs, and rivers. Nesting habitat consists of ponds and wetlands in higher elevation forest areas. 

Low. Suitable habitat is located along Piceance Creek and the White, Yampa, and Little Snake rivers. Although this species has the potential to occur along the proposed route, most breeding records have been from higher elevations. 

No. 
D-6

Table D-1 Special Status Species Identified for the Piceance Lateral Pipeline Project 

Common Name Scientific Name Status1 Habitat Association 

Potential for 

Occurrence Along 

the Proposed 

Project Route 

Eliminated F

Detailed 

Analysis 

(Yes/No

Northern goshawk Accipiter gentilis BLM-WY; 

BLM-CO; WYSPC. 

This species occupies mature, closed-canopied coniferous and aspen forests habitats. This species nests in open olderaged class coniferous forests and aspen stands. 

Low. Suitable foraging habitat and marginal nesting habitat occurs along the proposed route in southern Moffat County and along the proposed route in Rio Blanco County. No active nests occur in the vicinity of the proposed route. 

No. 

Golden eagle Aquila chrysaetos BLM-CO. This species occurs in a 

variety of habitats including grassland, pinyon juniper woodland, coniferous and deciduous forests, shrubland, and rock outcrop. Nest sites are usually located on cliffs and occasionally in large trees in open habitats. 

High. This species could occur within suitable habitats along the project route. 

No. A total of active nests been identifiewithin 1 mile the project R
D-7

Table D-1 Special Status Species Identified for the Piceance Lateral Pipeline Project 

Common Name Scientific Name Status1 Habitat Association 

Potential for 

Occurrence Along 

the Proposed 

Project Route 

Eliminated F

Detailed 

Analysis 

(Yes/No

Ferruginous hawk Buteo regalis BLM-WY; 

BLM-CO; COSPC; WY-SPC. 

This species occurs in open semi-arid habitats including basin-prairie shrubland, mountain-foothills, badlands, and grassland. Nest sites include trees, ledges, and rock outcrops in sagebrush valleys and rolling grassland habitat. 

Moderate. This species could occur within suitable habitats along the project route, although no active nests have been documented in the vicinity of the project ROW. 

No. 

Swainson's hawk Buteo swainsoni BLM-CO; WYSPC. This species typically occurs in arid and semi-arid 

grassland habitats and in agricultural areas with scattered trees and shrubs. Nest sites typically occur in isolated trees, but will sometimes occur on cliffs or rock outcrops. 

High. This species could occur within suitable habitats along the project route, especially in areas with suitable tees and large shrubs for nesting. 

No. An active nest was locaalong the ProROW in Coloin 2008. 

Bald eagle Haliaeetus 

leucocephalus 

CO-T; WY-SPC. This species typically occurs 

near large bodies of water that support suitable roosting and foraging habitat. Nests are commonly built in mature cottonwoods or conifers along lakes or other large bodies of water. 

High. This species could occur within suitable habitats along the project route. 

No. Two nessites and wiroost areas hbeen identifiethe vicinity of project ROW along the WhYampa, and Snake rivers
D-8

Table D-1 Special Status Species Identified for the Piceance Lateral Pipeline Project 

Common Name Scientific Name Status1 Habitat Association 

Potential for 

Occurrence Along 

the Proposed 

Project Route 

Eliminated F

Detailed 

Analysis 

(Yes/No

American peregrine falcon 

Falco peregrinus BLM-WY; 

CO-SPC; WY-SPC. 

This species typically breeds in foothills and mountainous areas. Nest sites are often located on ledges of high, steep-walled cliffs. Preferred foraging habitat includes marshes, lakes, rivers, and wet meadows. 

Low. No falcon nest sites have been identified as occurring within the vicinity of the project route. Most peregrine falcon nests in northwest Colorado are located in Dinosaur National Monument 30 miles northwest of the proposed route. 

No. 

Columbian sharptailed grouse Tympanuchus phasianellus 

columbianus 

BLM-CO; BLMWY; CO-SPC; WY-SPC. 

This species is typically found at the interface of sagebrush, serviceberry, chokecherry, oakbrush, and grasslands. Leks are located on open ridges. 

Low. This species could occur within suitable habitats (i.e., sagebrush/oakbrush interface) along the project route. Approximately 5 historic leks occur 10-15 miles northeast of the proposed route in Moffat County, Colorado. 

No. 
D-9

Table D-1 Special Status Species Identified for the Piceance Lateral Pipeline Project 

Common Name Scientific Name Status1 Habitat Association 

Potential for 

Occurrence Along 

the Proposed 

Project Route 

Eliminated F

Detailed 

Analysis 

(Yes/No

Greater sage-grouse Centrocercus 

urophasianus 

BLM-WY; BLMCO; CO-SPC; WY-SPC. 

Sage-grouse are a sagebrush obligate species. Lek sites are generally located in open areas such as broad ridges, grassy areas, and disturbed sites, adjacent to suitable nesting habitat. Nesting occurs within sagebrush stands with adequate height and canopy cover, and food source. 

High. This species occurs within suitable habitats along the project route. Occurrence by this species has been documented within the project vicinity in Wyoming and Colorado. 

No. Suitable breeding habfor this speciscattered alothe project roA total of 6 alek sites were identified witmiles of the project ROW Colorado and active leks w2 miles of the project ROW Wyoming. 

Mountain plover Charadrius montanus BLM-WY; 

BLM-CO; COSPC; WY-SPC. 

This species inhabits flat, short-grass prairie in areas often grazed by livestock and in areas occupied by prairie dog colonies. 

High. This species could occur within suitable habitats along the northern portion of the project route in Wyoming. 

No. Approximate11.7 miles of mountain plohabitat is croby the proporoute in Wyoming. Thspecies has documented along the proposed rouWyoming. 
D-10

Table D-1 Special Status Species Identified for the Piceance Lateral Pipeline Project 

Common Name Scientific Name Status1 Habitat Association 

Potential for 

Occurrence Along 

the Proposed 

Project Route 

Eliminated F

Detailed 

Analysis 

(Yes/No

Black tern Chlidonias niger BLM-CO This species is found near 

reservoirs, lakes, and ponds. Nesting occurs in large cattail marshes adjacent to open water. 

Low. Although this species could occur along the proposed route, suitable habitat is very limited. Occurrence would be limited to migrating and dispersing individuals. 

No. 

Long-billed curlew Numenius 

americanus 

WY-BLM; BLMCO. Grasslands and wet meadows. Low. Potentially suitable habitat 

occurs along portions of the proposed route. A small breeding population may occur in Moffat County, Colorado 

No. 

Yellow-billed cuckoo Coccyzus 

americanus 

FC; BLM-WY; BLM-CO; COSPC; WY-SPC. 

This species inhabits lowland deciduous woodlands, willow and alder thickets, mature cottonwood-riparian woodlands, deserted farmlands, and orchards. Breeding typically occurs in riparian woodlands. 

None. No observations of this species have been documented within the project vicinity. 

Yes. The denriparian habitnecessary to support yellobilled cuckoonot present iproject area. 
D-11

Table D-1 Special Status Species Identified for the Piceance Lateral Pipeline Project 

Common Name Scientific Name Status1 Habitat Association 

Potential for 

Occurrence Along 

the Proposed 

Project Route 

Eliminated F

Detailed 

Analysis 

(Yes/No

Western burrowing owl 

Athene cunicularia hypugea 

BLM-WY; CO-SPC; CO-T; WY-SPC. 

This species nests in nonriparian habitats including abandoned burrows of prairie dogs, ground squirrels, foxes, and badgers in grassland, open shrubland, and woodland communities. 

High. This subspecies could nest within potentially suitable habitat along the project route. 

No. Two actinests were identified in Wyoming dusummer 200surveys. 

Mexican spotted owl Strix occidentalis 

lucida 

FT; CO-T Habitat includes mixed 

conifer forests and hardwood forests with canyons. This species also utilizes riparian areas. Nests typically occur in caves, potholes, or rock fissures in narrow, steep wall canyons. The species exhibits a high level of nest site fidelity. 

Low. The nearest documented occurrence for this species is in Dinosaur National Monument 35 miles west of the proposed route. 

Yes 

Sage thrasher Oreoscoptes 

montanus 

BLM-WY; WYSPC. This species inhabits basin- prairie and mountainfoothills shrubland, and 

nesting occurs in or beneath sagebrush shrubs. 

Low. This species is a summer resident in Sweetwater County. No sage thrashers were seen during the 2007 surveys. 

No. 
D-12

Table D-1 Special Status Species Identified for the Piceance Lateral Pipeline Project 

Common Name Scientific Name Status1 Habitat Association 

Potential for 

Occurrence Along 

the Proposed 

Project Route 

Eliminated F

Detailed 

Analysis 

(Yes/No

Baird’s sparrow Ammodramus bairdii WY-BLM Grasslands, fallow weedy 

fields. 

Low. Yes. The 

proposed rououtside the breeding ranof this specieTherefore, occurrence would be limto migrating dispersing individuals. 

Sage sparrow Amphispiza belli BLM-WY; COSPC; WY-SPC. This species inhabits basin- prairie and mountainfoothills shrubland, and 

nesting occurs in or beneath sagebrush shrubs. 

High. This species is an uncommon summer resident in Sweetwater County and local summer resident in western Colorado. Sage sparrows were seen during the 2007 surveys. 

No. 

Brewer's sparrow Spizella breweri BLM-WY; COSPC; WY-SPC. This species typically occurs in basin-prairie and 

mountain-foothills shrublands, especially sagebrush and woodland chaparral. Nest sites typically occur in shrubs. 

High. This species is a common summer resident in Sweetwater, Moffat, and Rio Blanco Counties. This species was not observed during 2007 surveys. 

No. 
D-13

Table D-1 Special Status Species Identified for the Piceance Lateral Pipeline Project 

Common Name Scientific Name Status1 Habitat Association 

Potential for 

Occurrence Along 

the Proposed 

Project Route 

Eliminated F

Detailed 

Analysis 

(Yes/No

Loggerhead shrike Lanius ludovicianus BLM-WY; COSPC This species typically inhabits open riparian areas, 

agricultural areas, grasslands, and shrublands (especially semidesert shrublands). Nest sites usually occur in isolated trees or large shrubs. 

High. This species could nest within suitable habitat along the project route. 

No. This spewas observethe vicinity oROW during 2007 survey

AMPHIBIANS Northern leopard frog Rana pipiens BLM-CO; BLMWY; CO-SPC; 

WY-SPC. 

Typical habitats include wet meadows and the banks and shallows of marshes, ponds, glacial kettle ponds, beaver ponds, lakes, reservoirs, streams, and irrigation ditches. Breeding season is generally May 1-August 15. 

High. This species has been documented in suitable habitat along the project route. 

No. 

Great Basin spadefoot 

Spea intermontana BLM-CO; BLMWY; WY-SPC. Breeds in pools and stock ponds filled by heavy rains 

or flooding in basins and rocky canyons, in areas with sagebrush, semidesert shrubland, or piñon-juniper woodlands. Breeding season is generally May 1-August 15. 

Moderate. This species has been documented in the vicinity of the proposed project in suitable habitat (e.g., stock ponds, temporary wetlands) in Colorado and Wyoming. 

No. 
D-14

Table D-1 Special Status Species Identified for the Piceance Lateral Pipeline Project 

Common Name Scientific Name Status1 Habitat Association 

Potential for 

Occurrence Along 

the Proposed 

Project Route 

Eliminated F

Detailed 

Analysis 

(Yes/No

Boreal toad Bufo boreas boreas FC; CO-E; WYSPC. Restricted to areas with suitable breeding habitat in 

spruce-fir forests and alpine meadows. Breeding habitat includes lakes, marshes, ponds, and bogs with sunny exposures and quiet, shallow water. Breeding season is generally May 1-August 15. 

Low. This species could occur within counties crossed by the proposed project; however suitable habitat (based on known occurrence records) is not likely crossed. 

Yes. 

REPTILES Midget faded rattlesnake 

Crotalus viridis concolor 

BLM-CO; WYSPC. This species inhabits rock outcrops in the sagebrush 

communities. 

Low. This species could occur within suitable habitats along the project route in Sweetwater County, Wyoming. 

No. 

FISH Bluehead sucker Catostomus 

discobolus 

BLM-CO; BLMWY; WY-SPC. Found exclusively in moving water from 

headwater streams to large rivers. It is absent in areas of standing water, requiring water of moderate-to-fast velocity. The species also prefers a rock substrate. Known to inhabit the Colorado River drainage. Spawning occurs in late spring and early summer. 

High. This species is found in the White, Yampa, and Little Snake Rivers and has the potential to occur at or near the proposed crossing. 

No. 
D-15

Table D-1 Special Status Species Identified for the Piceance Lateral Pipeline Project 

Common Name Scientific Name Status1 Habitat Association 

Potential for 

Occurrence Along 

the Proposed 

Project Route 

Eliminated F

Detailed 

Analysis 

(Yes/No

Mountain sucker Catostomus 

platyrhynchus 

BLM-CO; WYSPC. Typically found in smaller rivers and streams with 

gravel, sand, and mud substrates. It typically occupies undercut banks, eddies, small pools, and areas of moderate current. Spawning occurs in late spring and early summer. 

High. This species is found in the White, Yampa, and Little Snake Rivers and Piceance Creek and has the potential to occur at or near the proposed crossing 

No. 

Bonytail Gila elegans FE; CO-E Historically, bonytails were 

present in the Colorado River system, which includes the Yampa, Green, Colorado and Gunnison rivers. Today, there are no known populations in Colorado. They can be found in the Green River drainage in Utah and Mohave Reservoir on the ArizonaNevada border. This fish typically lives in large, fastflowing waterways of the Colorado River system. Spawning occurs in June and July. 

None. No known populations occur in Colorado. The last occurrence by this species in the Yampa River was recorded at the confluence of the Green River (Echo Park) in 1979. In July 2000, CDOW released 5,000 fingerlings at Echo Park at augment wild populations. 

No. Althoughhighly unlikethat this specwould occur along the proroute, potentwater depletifrom the Colorado Rivdrainage couimpact suitabhabitat. 
D-16

Table D-1 Special Status Species Identified for the Piceance Lateral Pipeline Project 

Common Name Scientific Name Status1 Habitat Association 

Potential for 

Occurrence Along 

the Proposed 

Project Route 

Eliminated F

Detailed 

Analysis 

(Yes/No

Colorado pikeminnow Ptychocheilus lucius FE; CO-T Historically, the pikeminnow 

occurred in great numbers throughout the Colorado River system from Green River in Wyoming to the Gulf of California in Mexico. In Colorado, they are currently found in the Green, Yampa, White, Colorado, Gunnison, San Juan and Dolores rivers. This species thrives in swift flowing muddy rivers with quiet, warm backwaters. Spawning occurs June through August. 

High. This species has been documented <2 miles from the proposed crossing. The project route would intersect critical habitat for this species at the Yampa River crossing. Potential water depletions from the Colorado River drainage could impact suitable habitat. 

No. 

Colorado River cutthroat trout 

Oncorhynchus clarki pleuriticus 

CO-SPC; BLMCO; BLM-WY; WY-SPC. 

Historically, this species was found throughout the Colorado River drainage in Colorado, Wyoming, Utah, Arizona, and New Mexico. Now limited to isolated headwater streams and lakes. This species thrives in cool, clear water of high elevation streams and lakes. Most populations are limited to elevations above 7,000 feet. Spawning occurs in spring. 

Low. In northwest Colorado, this species distribution is limited to isolated headwater streams and lakes of the White and Yampa River systems. The nearest population occurs approximately 10 miles south of the proposed route in Garfield County, Colorado. 

No. 
D-17

Table D-1 Special Status Species Identified for the Piceance Lateral Pipeline Project 

Common Name Scientific Name Status1 Habitat Association 

Potential for 

Occurrence Along 

the Proposed 

Project Route 

Eliminated F

Detailed 

Analysis 

(Yes/No

Flannelmouth sucker Catostomus latipinnis BLM-CO; BLMWY; WY-SPC. The flannelmouth sucker inhabits larger streams and 

rivers in all habitat types including riffles, runs, eddies, and backwaters. Known to inhabit the Colorado River drainage. Spawning occurs in spring and early summer. 

High. This species is known to occur in Piceance Creek and the White, Yampa, and Little Snake Rivers and has the potential to occur at or near the proposed crossing. 

No. 

Humpback chub Gila cypha FE; CO-T The historic range of the 

humpback is similar to the pikeminnow, occurring in great numbers throughout the Colorado River system from Green River in Wyoming to the Gulf of California in Mexico. Today, they can be found in deep, canyon-bound portions of the Colorado River system such as Black Rocks and Westwater canyons on the Colorado River and Yampa Canyon inside Dinosaur National Monument. This species prefers deep, fastmoving, turbid waters often associated with large boulders and steep cliffs. Spawning occurs in late spring. 

None. The closest known population occurs more than 40 river miles west of the Yampa River crossing at the confluence of the Yampa and Green Rivers. 

No. Althoughhighly unlikethat this specwould occur along the proroute, potentwater depletifrom the Colorado Rivdrainage couimpact suitabhabitat. 
D-18

Table D-1 Special Status Species Identified for the Piceance Lateral Pipeline Project 

Common Name Scientific Name Status1 Habitat Association 

Potential for 

Occurrence Along 

the Proposed 

Project Route 

Eliminated F

Detailed 

Analysis 

(Yes/No

Razorback sucker Xyrauchen texanus FE; CO-E Originally widespread in the 

Colorado River system, wild populations were reduced to a small number of individuals in the Yampa, Colorado and Gunnison rivers in Colorado. Reproducing populations remain only in the middle Green River in Utah and in an off-channel pond in the Colorado River near Grand Junction. This species is found in deep, clear to turbid waters of large rivers and some reservoirs over mud, sand or gravel. Spawning occurs in late spring and early summer. 

None. The closest known population occurs more than 40 river miles west of the Yampa River crossing at the confluence of the Yampa and Green Rivers. 

No. Althoughhighly unlikethat this specwould occur along the proroute, potentwater depletifrom the Colorado Rivdrainage couimpact suitabhabitat. 

Roundtail chub Gila robusta CO-SPC; BLMCO; BLM-WY; 

WY-SPC. 

Main channels of large rivers, and is most often found in murky pools near strong currents. Known to occur in the rivers of the Colorado River Basin. Spawning occurs in spring and early summer. 

High. This species is known to occur in Piceance Creek and the White, Yampa, and Little Snake Rivers and has the potential to occur at or near the proposed crossing. 

No. 
D-19

Table D-1 Special Status Species Identified for the Piceance Lateral Pipeline Project 

Common Name Scientific Name Status1 Habitat Association 

Potential for 

Occurrence Along 

the Proposed 

Project Route 

Eliminated F

Detailed 

Analysis 

(Yes/No

PLANTS Debris milkvetch Astragalus detritalis BLM-CO This species is found on 

rocky or sandy soils on alluvial terraces with cobbles in pinyon-juniper and mixed desert shrub communities. Flowering period: Late April-early June. Elevation: 5,400-7,200 feet. 

High. A total of six populations were observed throughout the length of the project route. 

No. This speoccurs within suitable habithroughout thproject route

Nelson milkvetch Astragalus 

nelsonianus 

BLM-WY; BLM-CO 

This species is found in gullies and flats on seleniferous soils in sparsely vegetated sagebrush. Flowering period: late May-August. Elevation: 6,000-7,000 feet. 

Low. This species could occur along the project route in Sweetwater County, Wyoming. 

No. This specould occur within potentsuitable habifrom MP -0.0 MP 52.0 and from MP 104MP 141.7. 

Park rockcress Boechera fernaldiana BLM-CO This species occurs on 

limestone and sandstone outcrops (usually Weber sandstone) in mixed desert shrub and pinyon-juniper communities, often in pine duff in shade. 

None. No observations of this species have been documented within the project vicinity. 

Yes. This speoccurs outsidthe project roin the extremwestern portof Moffat CouColorado. 
D-20

Table D-1 Special Status Species Identified for the Piceance Lateral Pipeline Project 

Common Name Scientific Name Status1 Habitat Association 

Potential for 

Occurrence Along 

the Proposed 

Project Route 

Eliminated F

Detailed 

Analysis 

(Yes/No

Ownbey’s thistle Cirsium ownbey’s BLM-CO; WYBLM Juniper, sagebrush, and riparian communities. Often 

associated with alcove seeps and abandoned stream channels. Elevation 5,500-6,200 feet. 

High. This species could occur within potentially suitable habitat along the proposed route along riparian areas or semi-moist environments. 

No. 

Many stemmed spider-flower 

Cleome multicaulis BLM-CO; WYBLM Semi-moist, open saline banks of shallow ponds and 

lakes with Baltic rush and bulrush. Often grows in bands just above rushes and extends into greasewood and saltgrass communities. Elevation 7,500-8,000 feet. 

High. This species could occur within potentially suitable habitat along the proposed route along riparian areas or semi-moist environments. 

No 

Ephedra buckwheat Eriogonum 

ephredoides 

BLM-CO This species occurs on 

sparsely vegetated slopes on white shales of the Green River Formation and soils derived from them. 

None. No observations of this species have been documented within the project vicinity. 

Yes. This speoccurs outsidthe project roin the extremwestern portof Rio Blanco County, Colorado. 
D-21

Table D-1 Special Status Species Identified for the Piceance Lateral Pipeline Project 

Common Name Scientific Name Status1 Habitat Association 

Potential for 

Occurrence Along 

the Proposed 

Project Route 

Eliminated F

Detailed 

Analysis 

(Yes/No

Utah genetian Gentianella tortuosa BLM-CO This species occurs on 

barren shale knolls and slopes of the Green River Formation. Flowering period: July-August. Elevation: 8,500-10,800 feet. 

None. No observations of this species have been documented within the project vicinity. 

Yes. The proroute does noccur within elevational raof this specieRio Blanco County, Colorado. 

Narrow-stem gilia Gilia stenothyrsa BLM-CO This species occurs in 

grassland, sagebrush, mountain-mahogany, or pinyon-juniper communities on silty to gravelly loam soils derived from the Green River and Uinta formations. Flowering period: Late MayJune. Elevation: 5,000-6,000 feet. 

Low. This species could occur within potentially suitable habitat along the project route in Rio Blanco County, Colorado. 

No. This specould occur within potentsuitable habifrom MP 103 MP 141.7. 

Dudley Bluffs bladderpod 

Lesquerella congesta FT This species inhabits barren 

white shale outcrops of the Green River and Uinta formations exposed along drainages through erosion from the downcutting of streams in the Piceance Basin. Flowering period: April-May. Elevation: 6,000-6,700 feet. 

Low. This species could occur within potentially suitable habitat along the project route in Rio Blanco County, Colorado. 

No. Potentiasuitable habifor this specicould occur between MP and MP 141.
D-22

Table D-1 Special Status Species Identified for the Piceance Lateral Pipeline Project 

Common Name Scientific Name Status1 Habitat Association 

Potential for 

Occurrence Along 

the Proposed 

Project Route 

Eliminated F

Detailed 

Analysis 

(Yes/No

Piceance bladderpod Lesquerella parviflora BLM-CO This species occupies shale 

outcrops of the Green River Formation, on ledges and slopes of canyons in open area. Flowering period: June-early July. Elevation: 6,200-8,600 feet. 

High. This species could occur within potentially suitable habitat along the project route in Rio Blanco County, Colorado. 

No. This spewas found duspring 2008 surveys at Mand MP 15.4

Narrow-leaf evening primrose 

Oenothera acutissima 

BLM-CO This species is found in 

sandy, gravelly or rocky soils, in seasonally wet areas; in meadows, depressions, or along arroyos in habitats ranging from mixed conifer forest to sagebrush scrub. 

None. No observations of this species have been documented within the project vicinity. 

Yes. This speoccurs outsidthe project roin western MCounty, Colorado. 

Rollins cryptanth Oreocarya rollinsii BLM-CO This species occurs on 

white shale slopes of the Green River Formation in pinyon-juniper or cold desert shrubland communities. 

None. No observations of this species have been documented within the project vicinity. 

Yes. This speoccurs outsidthe project roin western MCounty, Colorado. 

Contracted Indian ricegrass 

Oryzopsis contracta BLM-CO; WYBLM Basin and foothills areas on dry, sandy soils. Elevation 

4,800-7,500 feet. 

Low. This species could occur within potentially suitable habitat along the proposed route in Rio Blanco County, Colorado. 

No. 
D-23

Table D-1 Special Status Species Identified for the Piceance Lateral Pipeline Project 

Common Name Scientific Name Status1 Habitat Association 

Potential for 

Occurrence Along 

the Proposed 

Project Route 

Eliminated F

Detailed 

Analysis 

(Yes/No

Gibben's beardtongue 

Penstemon gibbensii BLM-WY; 

BLM-CO 

This species is found in sparsely vegetated shale or sandy-clay slopes of the Brown's Park Formation. Associated vegetation includes pinyon-juniper woodland, sagebrush, or salt desert shrub communities. Flowering period: June-September. Elevation: 5,500-7,700 feet. 

High. This species could occur within potentially suitable habitat along the project route in Sweetwater County, Wyoming. 

No. This specould occur within potentsuitable habifrom MP 0.0 MP 52 and frMP 103 to M141.7. This species was identified in tproject vicinitduring the 20field surveys

Dudley Bluffs twinpod (a.k.a. Piceance twinpod) 

Physaria obcordata FT This species is found on 

barren white outcrops and steep slopes exposed by creek downcutting. It is restricted to the Parachute Creek Member of the Green River Formation. Flowering period: May-June. Elevation: 5,900-7,500 feet. 

High. This species could occur within potentially suitable habitat along the project route in Rio Blanco County, Colorado. 

No. Suitable habitat for thspecies occubetween MP and MP 141.This species identified in tgeneral projevicinity during 2004 field surveys (althnot along the proposed RO
D-24

Table D-1 Special Status Species Identified for the Piceance Lateral Pipeline Project 

Common Name Scientific Name Status1 Habitat Association 

Potential for 

Occurrence Along 

the Proposed 

Project Route 

Eliminated F

Detailed 

Analysis 

(Yes/No

Western prairiefringed orchid Platanthera praeclara FT This orchid occurs most often in mesic to wet 

unplowed tallgrass prairies and meadows but have been found in old fields and roadside ditches. 

None. This species would not occur along the project route. 

Yes. This speis not expectwithin the provicinity based known occurrences overall range

Persistent sepal yellow-cress 

Rorippa calycina BLM-CO; WYBLM Riverbanks and shorelines on sandy soils near the 

high-water line. Elevation 4,300-6,800 feet. 

High. This species could occur within potentially suitable habitat along the proposed route along riparian areas or semi-moist environments. 

No 
D-25

Table D-1 Special Status Species Identified for the Piceance Lateral Pipeline Project 

Common Name Scientific Name Status1 Habitat Association 

Potential for 

Occurrence Along 

the Proposed 

Project Route 

Eliminated F

Detailed 

Analysis 

(Yes/No

Ute ladies'-tresses Spiranthes diluvialis FT This species is found in subirrigated alluvial soils along 

streams, and in open meadows in flood plains. Flowering period: JulySeptember. Elevation: 4,200-7,000 feet. 

Low. This species was not observed during the 2004 field surveys. The closest known occurrence is approximately 50 miles west of the project route. 

No. This speis not expectwithin the provicinity based known occurrences overall rangeHowever, suitable habifor this speciwas observeseveral locatin Colorado. 

1FE = Federally listed as endangered. CO-SPC = Colorado Species of Concern. 

 FT = Federally listed as threatened. WY-SPC = Wyoming Species of Concern.  FC = Federal candidate. BLM-CO = Colorado BLM Sensitive Species. 

 CO-E=State listed as endangered in Colorado. BLM-WY = Wyoming BLM Sensitive Species.  CO-T=State listed as threatened in Colorado. 
July 2008

Appendix E 

Cultural Resource Inventory 
E-1

Table E-1 Summary of Sites Recorded During the Overland Pass Piceance Lateral Cultural Resource Inventory 

Resource 

Type Land Status 

NRHP 

Eligibility 

Project 

Impacts Manageme

Smithsonian Number 

Prehistoric 

Historic 

BLM-WRFO 

BLM-LSFO 

BLM-RFO 

State of Colorado 

Private - Colorado 

Private – Wyoming 

Eligible 

Not Eligible 

Intact Part of Site is within 

the Piceance Lateral 

Construction Corridor 

No Further Work 

Consider for Data Recovery 

5MF312 X X X X 5MF1707.3 X X X X1 X X 5MF1915 X X X X X1 X X 5MF2985 X X X1,2 X 5MF2988 X X X1,2 X 5MF2989 X X X X X 5MF2990 X X X1 X X 5MF2992 X X X1 X X 5MF2993 X X X1 X X 5MF2994 X X X1 X X 5MF3001 X X X1 X X 5MF3002 X X X1 X X 5MF3003 X X X1 X X 5MF3006 X X X X1 X X 5MF3008 X X X1 X X 5MF3009 X X X1 X X 
E-2

Table E-1 Summary of Sites Recorded During the Overland Pass Piceance Lateral Cultural Resource Inventory 

Resource 

Type Land Status 

NRHP 

Eligibility 

Project 

Impacts Manageme

Smithsonian Number 

Prehistoric 

Historic 

BLM-WRFO 

BLM-LSFO 

BLM-RFO 

State of Colorado 

Private - Colorado 

Private – Wyoming 

Eligible 

Not Eligible 

Intact Part of Site is within 

the Piceance Lateral 

Construction Corridor 

No Further Work 

Consider for Data Recovery 

5MF3010 X X X X 5MF3172 X X X X X 5MF3190 X X X1,2 X 5MF3193 X X X1 X X 5MF3195 X X X1 X X 5MF3196/5MF3171 X X X1 X X 5MF3198 X X X1 X X 5MF3327 X X X1,2 X 5MF3328/48SW8861 X X X X1 X 5MF3587 X X X1 X X 5MF4143.3 X X X X1,3 X X 5MF5379 X X X1 X X 5MF5382 X X X1 X X 5MF5389 X X X X X 5MF5403 X X X1 X X 5MF5445 X X X X X 
E-3

Table E-1 Summary of Sites Recorded During the Overland Pass Piceance Lateral Cultural Resource Inventory 

Resource 

Type Land Status 

NRHP 

Eligibility 

Project 

Impacts Manageme

Smithsonian Number 

Prehistoric 

Historic 

BLM-WRFO 

BLM-LSFO 

BLM-RFO 

State of Colorado 

Private - Colorado 

Private – Wyoming 

Eligible 

Not Eligible 

Intact Part of Site is within 

the Piceance Lateral 

Construction Corridor 

No Further Work 

Consider for Data Recovery 

5MF5451.1 X X X X X 5MF5451.2 X X X1 X X 5MF5452.1 X X X1 X X 5MF5452.2 X X X1 X 5MF5680 X X X X1 X X 5MF5681 X X X1 X X 5MF5682/5MF2997 X X X X1 X X 5MF5686 X X X X1 X X 5MF5687 X X X X X 5MF5691 X X X1,2 X 5MF5692 X X X1 X X 5MF5693 X X X X X X 5MF5694 X X X1 X X 5MF5778 X X X1 X X 5MF5821.2 X X X X 5MF5823.1 X X X1 X X 
E-4

Table E-1 Summary of Sites Recorded During the Overland Pass Piceance Lateral Cultural Resource Inventory 

Resource 

Type Land Status 

NRHP 

Eligibility 

Project 

Impacts Manageme

Smithsonian Number 

Prehistoric 

Historic 

BLM-WRFO 

BLM-LSFO 

BLM-RFO 

State of Colorado 

Private - Colorado 

Private – Wyoming 

Eligible 

Not Eligible 

Intact Part of Site is within 

the Piceance Lateral 

Construction Corridor 

No Further Work 

Consider for Data Recovery 

5MF5849 X X X X X 5MF6170 X X X X X 5MF6246 X X X X X 5MF6535 X X X X X 5MF6536 X X X X X 5MF6537 X X X X 5MF6538 X X X X 5MF6539 X X X X X 5MF6540 X X X X X 5MF6541 X X X X 5MF6542 X X X X 5MF6543 X X X X X 5MF6544 X X X X 5RB3405.1 X X X1,2 X X 5RB765 X X X X 5RB4160.4 X X X X X 
E-5

Table E-1 Summary of Sites Recorded During the Overland Pass Piceance Lateral Cultural Resource Inventory 

Resource 

Type Land Status 

NRHP 

Eligibility 

Project 

Impacts Manageme

Smithsonian Number 

Prehistoric 

Historic 

BLM-WRFO 

BLM-LSFO 

BLM-RFO 

State of Colorado 

Private - Colorado 

Private – Wyoming 

Eligible 

Not Eligible 

Intact Part of Site is within 

the Piceance Lateral 

Construction Corridor 

No Further Work 

Consider for Data Recovery 

5RB4161.4 X X X X X 5RB4921 X X X1 X X 5RB4924 X X X1 X X 5RB4925 X X X1 X X 5RB4926 X X X1 X X 5RB4927 X X X1 X X 5RB4929 X X X X 5RB4930 X X X1 X X 5RB4932 X X X1 X X 5RB4933 X X X1 X 5RB4934 X X X1 X X 5RB4935 X X X1 X X 5RB4939 X X X1 X X 5RB5684 X X X X 5RB5685 X X X X 5RB5686 X X X X 
E-6

Table E-1 Summary of Sites Recorded During the Overland Pass Piceance Lateral Cultural Resource Inventory 

Resource 

Type Land Status 

NRHP 

Eligibility 

Project 

Impacts Manageme

Smithsonian Number 

Prehistoric 

Historic 

BLM-WRFO 

BLM-LSFO 

BLM-RFO 

State of Colorado 

Private - Colorado 

Private – Wyoming 

Eligible 

Not Eligible 

Intact Part of Site is within 

the Piceance Lateral 

Construction Corridor 

No Further Work 

Consider for Data Recovery 

5RB5687 X X X X 5RB5688 X X X X 5RB5689 X X X X 48CR1616 X X X X X 48CR1911 X X X1,2,4 48CR2009 X X X X X 48CR2017 X X X1 X X 48CR5501 X X X X X 48CR7914 X X X1 X X 48SW635 X X X1,2 X 48SW1180 X X X1 X X 48SW1181 X X X X1 X X 48SW1182 X X X1 X X 48SW1226 X X X X1 X 48SW3680 X X X1 X 48SW3723 X X X1 X X 
E-7

Table E-1 Summary of Sites Recorded During the Overland Pass Piceance Lateral Cultural Resource Inventory 

Resource 

Type Land Status 

NRHP 

Eligibility 

Project 

Impacts Manageme

Smithsonian Number 

Prehistoric 

Historic 

BLM-WRFO 

BLM-LSFO 

BLM-RFO 

State of Colorado 

Private - Colorado 

Private – Wyoming 

Eligible 

Not Eligible 

Intact Part of Site is within 

the Piceance Lateral 

Construction Corridor 

No Further Work 

Consider for Data Recovery 

48SW3725 X X X X1 X X 48SW6030 X X X1 X X 48SW6155 X X X1,2 X X 48SW8802 X X X2 X X 48SW8803 X X X1 48SW8809 X X X1 X X 48SW8810 X X X1 X X 48SW8817 X X X1 X X 48SW8819 X X X1 X X 48SW8834 X X X1 X X 48SW8835 X X X1 X 48SW8837 X X X1 X 48SW8838 X X X1 X 48SW8842 X X X1 X 48SW8844 X X X1,2 X 48SW8846 X X X X1 X X 
E-8

Table E-1 Summary of Sites Recorded During the Overland Pass Piceance Lateral Cultural Resource Inventory 

Resource 

Type Land Status 

NRHP 

Eligibility 

Project 

Impacts Manageme

Smithsonian Number 

Prehistoric 

Historic 

BLM-WRFO 

BLM-LSFO 

BLM-RFO 

State of Colorado 

Private - Colorado 

Private – Wyoming 

Eligible 

Not Eligible 

Intact Part of Site is within 

the Piceance Lateral 

Construction Corridor 

No Further Work 

Consider for Data Recovery 

48SW8847 X X X1 X X 48SW9142 X X X2 X 48SW9151 X X X1 X X 48SW9548 X X X1 X 48SW10277 X X X1 X X 48SW10284 X X X1 X X 48SW12257 X X X X X 48SW13691 X X X1 X 48SW14337 X X X1 X X 48SW15597 X X X1 X X 48SW15606 X X X X1 X 48SW15607 X X X1 X X 48SW15732 X X X1 X X 48SW15733 X X X1,2 X 48SW15734 X X X1 X 48SW15735 X X X X1 X 
E-9

Table E-1 Summary of Sites Recorded During the Overland Pass Piceance Lateral Cultural Resource Inventory 

Resource 

Type Land Status 

NRHP 

Eligibility 

Project 

Impacts Manageme

Smithsonian Number 

Prehistoric 

Historic 

BLM-WRFO 

BLM-LSFO 

BLM-RFO 

State of Colorado 

Private - Colorado 

Private – Wyoming 

Eligible 

Not Eligible 

Intact Part of Site is within 

the Piceance Lateral 

Construction Corridor 

No Further Work 

Consider for Data Recovery 

48SW15736 X X X1 X X 48SW15738 X X X1 X X 48SW15739 X X X1 X X 48SW15742 X X X1 X X 48SW15743 X X X X1,2 X 48SW15744 X X X1,2 X 48SW15749 X X X1 X X 48SW15751 X X X1 X X 48SW15756 X X X1 X X 48SW15757 X X X1 X X 48SW15824 X X X1 X X 48SW16341 X X X1 X X 48SW16348 X X X X X 48SW16385 X X X X 48SW16962 X X X X X 48SW16963 X X X X X 
E-10

Table E-1 Summary of Sites Recorded During the Overland Pass Piceance Lateral Cultural Resource Inventory 

Resource 

Type Land Status 

NRHP 

Eligibility 

Project 

Impacts Manageme

Smithsonian Number 

Prehistoric 

Historic 

BLM-WRFO 

BLM-LSFO 

BLM-RFO 

State of Colorado 

Private - Colorado 

Private – Wyoming 

Eligible 

Not Eligible 

Intact Part of Site is within 

the Piceance Lateral 

Construction Corridor 

No Further Work 

Consider for Data Recovery 

48SW16964 X X X 48SW16965 X X X X X 48SW16966 X X X X X 48SW16967 X X X X 48SW16968 X X X X 48SW16969 X X X X X 48SW16971 X X X X X 48SW17021 X X X X X 48SW17051 X X X X 48SW17052 X X X X 48SW17053 X X X X 1Official NRHP determination of eligibility. 2Site has been destroyed. 3Noncontributing segment of an NRHP-eligible linear site. 4Officially eligible but recommended “need data.” 

Source: Greubel et al. 2008.