HAZARD RANKING SYSTEM (HRS) DOCUMENTATION RECORD- REVIEW COVER 

SHEET

Name of Site: West Vermont Drinking Water Contamination

U.S. EPA ID No. INN000510429

Date Prepared: September 2015

Contact Persons

Documentation Record: Mark Jaworski

Site Investigation Program, Federal Programs Section

Indiana Department of Environmental Management

(317) 233-2407

Pathways, Components, or Threats Not Scored

Surface Water Migration Pathway, Soil Exposure Pathway, and Air Migration Pathway:

The Surface Water Migration Pathway, Soil Exposure Pathway, and Air Migration Pathway 

were not scored as part of this Hazard Ranking System (HRS) evaluation. These pathways 

were not included because a release to these media does not significantly affect the overall 

score and because the ground water pathway produces an overall score above the minimum 

requirement for the West Vermont Drinking Water Contamination to qualify for inclusion on the 

National Priorities List (NPL).
1

HRS DOCUMENTATION RECORD

Name of Site: West Vermont Drinking Water Contamination

EPA Region: 5

Street Address*: The intersection of West Vermont Street and Cossell Road, 

(Figure 1-3 of this HRS Documentation Record)

Date Prepared: September, 2015

City, County, State, Zip Code: Indianapolis, Marion County, Indiana, 46222

General Location in the State: Central Indiana (Figure 1-1 of this HRS Documentation Record)

Topographic Map: Indianapolis West, Indiana Quad (7.5’) (Ref. 3)

Latitude: 39.772453 North

Longitude: 86.228934 West 

Reference Point: The intersection of West Vermont Street and Cossell Road.

(Figure 1-3 of this HRS Documentation Record)

Congressional District: 7

Scores for West Vermont Drinking Water Contamination

Air Pathway Not Scored

Ground Water Pathway 100.00

Soil Exposure Pathway Not Scored

Surface Water Pathway Not Scored

HRS SITE SCORE 50.00

*The street address, coordinates, and contaminant locations presented in this HRS documentation 

record identify the general area the site is located. They represent one or more locations EPA 

considers to be part of the site based on the screening information EPA used to evaluate the site for 

NPL listing. EPA lists national priorities among the known "releases or threatened releases" of 

hazardous substances; thus, the focus is on the release, not precisely delineated boundaries. A site is 

defined as where a hazardous substance has been "deposited, stored, disposed, or placed, or has 

otherwise come to be located." Generally, HRS scoring and the subsequent listing of a release merely 

represent the initial determination that a certain area may need to be addressed under CERCLA. 

Accordingly, EPA contemplates that the preliminary description of facility boundaries at the time of 

scoring will be refined as more information is developed as to where the contamination has come to be 

located.
2

WORKSHEET FOR COMPUTING HRS SITE SCORE

S S2

1. Ground Water Migration Pathway Score (Sgw) 

100.00 10,000.00

2a. Surface Water Overland/Flood Migration Component

(from Table 4-1, line 30)

NS*

2b. Ground Water to Surface Water Migration Component

(from Table 4-25, line 28)

NS

2c. Surface Water Migration Pathway Score (Ssw)

Enter the larger of lines 2a and 2b as the pathway 

score.

NS

3. Soil Exposure Pathway Score (Ss)

(from Table 5-1, line 22)

NS

4. Air Migration Pathway Score (Sa)

(from Table 6-1, line 12)

NS

5. Total of Sgw

2 + Ssw2 + Ss2 + Sa2 10,000.00 

6. HRS Site Score

Divide the value on line 5 by 4 and take the square root 50.00

Notes: *NS = Not Scored

 
3

HRS Table 3-1 –Ground Water Migration Pathway Scoresheet

Factor Categories and Factors Maximum

Value

Value

Assigned

Likelihood of Release to an Aquifer:

1. Observed Release 550 550

2. Potential to Release:

 2a. Containment 10 NS

 2b. Net Precipitation 10 NS

 2c. Depth to Aquifer 5 NS

 2d. Travel Time 35 NS

 2e.Potential to Release [lines 2a x (2b + 2c + 2d)] 500 NS

3. Likelihood of Release (higher of lines 1 and 2e) 550 550

Waste Characteristics:

4. Toxicity/Mobility (a) 10,000

5. Hazardous Waste Quantity (a) 100

6. Waste Characteristics 100 32

Targets:

7. Nearest Well 50 50

8. Population:

 8a. Level I Concentrations (b) 30

 8b. Level II Concentrations (b) NS

 8c. Potential Contamination (b) 909

 8d. Population (lines 8a + 8b + 8c) (b) 939

9. Resources 5 0

10. Wellhead Protection Area 20 0

11. Targets (lines 7 + 8d + 9 + 10) (b) 989

Ground Water Migration Score For An Aquifer:

12. Aquifer Score [(lines 3 x 6 x 11)/82,500]c

550 x 32 x 989 =17,406,400/82,500 =210.9

100 100.00

Ground Water Migration Pathway Score:

13. Pathway Score (Sgw),

(highest value from line 12 for all aquifers evaluated)c 100 100.00

(a) Maximum value applies to waste characteristics category

(b) Maximum value not applicable c

 Do not round to nearest integer

NS - Not Scored
GG

§ ̈¦65

§ ̈¦69

§ ̈¦70

§ ̈¦74

§ ̈¦74

§ ̈¦65

§ ̈¦65

§ ̈¦64

§ ̈¦94

§ ̈¦80

§ ̈¦69

§ ̈¦465 § ̈¦70

This map is intended to serve as an aid in graphic representation 

only. This information is not warranted for accuracy or other purposes.

Mapped By:

Shane Moore, Office of Land Quality

Date:04/28/2015

Sources:

Non Orthophotography 

Data - Obtained from the State of Indiana

 Geographical

 Information Office Library

Orthophotography - Obtained from Indiana 

Map Framework Data

(www.indianamap.org) 

Map Projection: UTM Zone 16 N

Map Datum: NAD83

West Vermont Drinking Water Contamination - EPA ID INN000510429

Speedway, Marion County, Indiana

μ Latitude: 39.7720520

Longitude: -86. 2294990

GG Center of Site

0 15 30 60 Kilometers

0 10 20 40 Miles

4
!(

!(

!(

!(

!(

!( !(

!(

!(

!(

!( !(

!(

!(

!(

!(

!( !(

!( !(

!(

!(

!(

!(

!( !(

E5AW8 and E5AW9

MW-WES-04B and MW-WES-04A

VOC ND

E5AW6

MW-1003-S3

VOC ND

W Michigan St

W Vermont St

Grande Ave

N Holt Rd

Holt Rd

Cossell Rd

Cossell Rd

W Walnut St

Olin Ave

Tomlinson St

N Tibbs Ave

W Vermont St

W 10th St

Olin Ave

W Michigan St

N Somerset Ave

N Livingston Ave

W North St

N Lyons Ave

N Rochester Ave

N Exeter Ave

N Berwick Ave

N Luett Ave

Eagle Creek

Little Eagle Creek

Dry Run

Eagle Creek

Mill Run

Ristow Branch

N Rybolt Ave

BACKGROUND

E5BH7

Well ID - WVS-11

VOC ND

BACKGROUND

E5BH4

Well ID - WVS-10

VOC ND

BACKGROUND

E5BH3

Well ID - WVS-10

VOC ND 

BACKGROUND

E5AZ3

Well ID - WVS-11

VOC ND

E5AW0

MW-135

VOC ND

E5AT9

MW-154

VOC ND

E5AY1

MW-WES-01A

VOC ND

E5AT2

MW-WES-05B

VOC ND

E5AT1

MW-WES-05A

VOC ND

E5AT0

MW-WES-07

Vinyl Chloride 18

E5AW5

MW-1105-S3/4

VOC ND

E5AW1

MW-10-1R

Trans_12_DCA 8.8

Cis_12_DCE 57

E5AS8RE

MW-WES-03B

Vinyl Chloride 8

E5AS9

MW-WES-03A

Vinyl Chloride 1.7

E5AX2

MMW-P-10D

Trans_12_DCE 1.3

E5AX2DL

MMW-P-10D

Cis_12_DCE 69

Vinyl Chloride 81

E5AW1DL

MW-10-1R

TCE 670

Cis_12_DCE 59

E5AS4

4018 W Vermont St

Vinyl Chloride 4.9

E5AS6RE

4012 Cossell Rd

Vinyl Chloride 1.4

E5AZ1DL

WasteWater

Cis_12_DCE 2.1

Vinyl Chloride 0.69

E5AS7

4012 Cossell Rd

Vinyl Chloride 4.8

E5AT7DL

MW-WES-09S

Cis_12_DCE 4.5

Vinyl Chloride 170

E5AX3DL

MW-WES-02B

Cis_12_DCE 16

Vinyl Chloride 0.82

E5AW3DL

MW-WES-08S

Cis_12_DCE 290

E5AX5

MW-WES-02C

Cis_12_DCE 0.83

Vinyl Chloride 5.4

E5AT7

MW-WES-09S

Cis_12_DCE 4.8

Vinyl Chloride 170

E5AX1

MMW-P-06

Trans_12_DCE 23

E5AX1DL

MMW-P-06

Cis_12_DCE 190

Vinyl Chloride 350

E5AS5

4020 Cossell Rd

VOC ND

E5AW3

MW-WES-08S

Vinyl Chloride 19

E5AW4

MW-WES-08D

Cis_12_DCE 17

Vinyl Chloride 1.4

E5AX3

MW-WES-02B

Trans_12_DCE 0.90

E5AX4

MW-WES-02B

Cis_12_DCE 13

Trans_12_DCE 0.85

Vinyl Chloride 7.3

E5AY2DL

MW-WES-01B

Vinyl Chloride 3.2 E5AT5DL

MW-WES-06S

Vinyl Chloride 41

E5AT6DL

MW-WES-06D

Vinyl Chloride 67

E5AT8DL

MW-WES-09D

Vinyl Chloride 37

E5AW2DL

MW-148R

TCE 100

Cis_12_DCE 29

E5AT4

MW-WES-06S

Vinyl Chloride 4.7

E5AY3DL

MW-WES-01B

Vinyl Chloride 3.0

E5AY4

MW-WES-01C

Vinyl Chloride 1.2

E5AT3

MW-WES-05C

Vinyl Chloride 13

E5AW2

MW-148R

11_DCA 1.4

Trans_12_DCE 6.4

E5AX0

MW-WES-02A

Cis_12_DCE 18

Trans_12_DCE 2.4

E5AY3

MW-WES-01B

Vinyl Chloride 29

BACKGROUND

E5BH3DL

Well ID - WVS-10

VOC ND

BACKGROUND

E5BH4DL

Well ID - WVS-10

VOC ND

BACKGROUND

E5AZ2

Well ID - WVS-10

VOC ND

State of Indiana 2011

This map is intended to serve as an aid in graphic representation 

only. This information is not warranted for accuracy or other purposes.

Mapped By:

Shane Moore, Office of Land Quality

Date:08/17/2015

Sources:

Non Orthophotography 

Data - Obtained from the State of Indiana Geographical

 Information Office Library

Samplling Data is from IDEM SampDB

Orthophotography - Obtained from Indiana Map Framework Data

(www.indianamap.org) 

Map Projection: UTM Zone 16 N Map Datum: NAD83

μ

West Vermont Drinking Water Contamination INN000510429

Ground Water Plume Map Showing Sample Concentrations of VOCs

Speedway, Marion County, Indiana

§ ̈¦465

§ ̈¦65

§ ̈¦70

§ ̈¦74

§ ̈¦70_D

§ ̈¦465

Marion Hendricks

Morgan Johnson

Boone Hamilton

Marion County

!( Sample Points (ug/L)

Approximate Ground Water Plume Boundary

0 150 300 600 Meters

0 500 1,000 2,000 Feet

Figure 1-2

Ground Water Plume Area

20.2 Acres

The Approximate Ground Water Plume was digitized

 by connecting sample locations with

 concentration levels of concern for contaminates

City Park

5
!C

!C

!C

G

TIBBS AV

NORTH ST

LUETT AV

VERMONT ST

MICHIGAN ST

WALNUT ST

EXETER AV

HOLT RD

ALTON AV

BERWICK AV

LIVINGSTON AV

SOMERSET AV

ROCHESTER AV

GARDEN AV

COSSELL RD

CENTENNIAL ST

OLIN AV

GROFF AV

ST CLAIR ST

NEW YORK ST

WILCOX ST

MORELAND ST

INV ST 6

VERMONT ST

VERMONT ST

WALNUT ST

WILCOX ST

State of Indiana 2011

This map is intended to serve as an aid in graphic representation 

only. This information is not warranted for accuracy or other purposes.

Mapped By:

Shane Moore, Office of Land Quality

Date:01/13/2015

Sources:

Non Orthophotography 

Data - Obtained from the State of Indiana Geographical

 Information Office Library

Orthophotography - Obtained from Indiana Map Framework Data

(www.indianamap.org) 

Map Projection: UTM Zone 16 N Map Datum: NAD83

μ

West Vermont Drinking Water Contamination With Near By Potential Sources

Speedway, Marion County, Indiana

Marion Hendricks

Morgan Johnson

Boone Hamilton

Shelby

Hancock

Marion County

Residence of Concern

G West Vermont Drinking Water Contamination

!C Potential Source

Area of Residences Supplied by Private Ground Water Wells

0 87.5 175 350 Meters

0 280 560 1,120 Feet

Longitude: -86.228934

Latitude: 39.772453

Allison Transmission

Genuine Parts

Michigan Plaza

6
Figure 1-4

Source and Background Sampling

Locations Map

West Vermont Groundwater Contamination OS

West Vermont Street and Cossell Road

Speedway, Marion County, Indiana

Prepared For: EPA Prepared By: Tetra Tech Inc.

EPA Contract No.: EP-S5-13-01 TDD No.: S05/0001-1404-009

Source: Bing Maps Hybrid, 2011-2012

Date Saved: 4/16/2015 

File Path: G:\G\G9026-START IV\Indiana\West Vermont\mxd\2015-03\Fig1-4_Source&BackgroundSamples.mxd

100 0 100

Feet

Coordinate System: NAD 1983 UTM Zone 16N Projection: Transverse Mercator Datum:North American 1983 Units: Foot US

Legend

Soil Boring Location 

Background Sample Location 

Excavation Area

Study Area

Allison Transmission Site

Genuine Auto Parts Site

Michigan Plaza Site

Michigan Meadow Apartments

Residential Area

7
8/3/2015 X:\OLQ\OLQGIS\Projects\WestVermont-MichiganPlaza\TetraTech\Fig1_5_idem.mxd m.banh

1/4 Mile

1/2 Mile

1 Mile

2 Miles

3 Miles

4 Miles

2

7R

WR7

WR8

RS26

RS22

RS27

RSB

RSD

RS7

Genuine 

Auto Parts

Source Area

Michigan Plaza

Source Area

RS9

RSC

6

RS8

13

RS18

WR9

RS19

12

14R

4 3

WR3

RS29

RS02

10R

9

RS17

RSA

8R

15

11R

DNR

179985

DNR

414789

Riverside Well (RS)

Speedway Well

White River Well (WR)

* DNR Well

Area of Residences

Supplied by Private Ground Water Wells

- West Vermont Street/Cossell Road

Area of Residences

Supplied by Private Ground Water Wells

- Fleming Street/Vine Street

Prepared For: EPA Prepared By: Tetra Tech Inc.

* Figure 1-5

4-Mile Radius Map

Genuine Auto Parts and Michigan Plaza

West Vermont Groundwater Contamination OS

West Vermont Street and Cossell Road

Speedway, Marion County, Indiana

Date Saved: 8/3/2015 EPA Contract No.: EP-S5-13-01 TDD No.: S05/0001-1404-009

Source: USGS 7.5-Minute Topographic Quadrangle Map, Indianapolis West, IN 1998

0.5 0 0.5

±

Miles

Source area = outline of the outer most source sample locations. 

Coordinate System = NAD 1983 State Plane Indiana East-Feet

* = Indiana Department of Environmental Managment (IDEM)

Addedl/Modified Information to Tetra Tech Figure 1-5 Map

*This map is intended to serve as an aid in

graphic representation only. This information

is not warranted for accuracy or other purposes.

*Mapped By: Shane Moore

 Office of Land Quality

*Date Modified: Aug. 3, 2015

*Well Name

*Distance from

Genuine Auto Parts 

(Mile)

*Distance from

Michigan Plaza

(Mile)

Speedway 2 1.367 1.526

Speedway 3 1.683 1.787

Speedway 4 1.701 1.808

Speedway 6 1.360 1.515

Speedway 7R 1.489 1.642

Speedway 8R* 1.936 2.057

Speedway 9 2.144 2.281

Speedway 10R* 1.897 2.041

Speedway 11R* 2.309 2.471

Speedway 12 2.363 2.528

Speedway 13 2.097 2.269

Speedway 14R 2.267 2.424

Speedway 15 1.475 1.576

Riverside RS2 2.473 2.446

Riverside RS7 2.298 2.238

Riverside RS8 2.289 2.235

Riverside RS9 2.317 2.266

Riverside RS17 2.126 2.135

Riverside RS18 2.063 2.093

Riverside RS19 1.925 1.965

Riverside RS22 2.470 2.452

Riverside RS26 2.368 2.330

Riverside RS27 2.437 2.387

Riverside RS29 2.202 2.151

Riverside RSA 2.384 2.379

Riverside RSB 2.351 2.358

Riverside RSC 2.279 2.251

Riverside RSD 2.351 2.303

White River WR3 3.088 3.066

White River WR7 3.054 3.043

White River WR8 3.022 3.004

White River WR9 2.926 2.919

DNR Reference 

Number 414789 1.057 1.175

DNR Reference 

Number 179985 1.880 1.800

8
4140 W Vermont St

7/7/2010 Vinyl chloride 2.1ug/L

4044 W Vermont St

7/7/2010 Vinyl chloride 4.7ug/L

7/7/2010 cis-1,2-Dichloroethylene 1.6ug/L

4012 Cossell Rd

7/7/2010 Vinyl chloride 13ug/L

12/12/2011 Vinyl chloride 26.1ug/L

4031 Cossell Rd

7/7/2010 Tetrachloroethylene 1.5ug/L

4018 W Vermont St

7/7/2010 Vinyl chloride 1.1ug/L

7/7/2010 Vinyl chloride 1.6ug/L

12/12/2011 Vinyl chloride 4.8ug/L

4042 W Vermont St

7/7/2010 Tetrachloroethylene 1.7ug/L

VERMONT ST

MICHIGAN ST

State of Indiana 2011

This map is intended to serve as an aid in graphic representation 

only. This information is not warranted for accuracy or other purposes.

Mapped By:

Shane Moore, Office of Land Quality

Date:04/13/2015

Sources:

Non Orthophotography 

Data - Obtained from the State of Indiana Geographical

 Information Office Library

Samplling Data is from IDEM SampDB

Orthophotography - Obtained from Indiana Map Framework Data

(www.indianamap.org) 

Map Projection: UTM Zone 16 N Map Datum: NAD83

μ

West Vermont Drinking Water Contamination

EPA Residential Sampling

Speedway, Marion County, Indiana

Marion Hendricks

Morgan Johnson

Boone Hamilton

Shelby

Hancock

Marion County

Sampling Location

0 25 50 100 Meters

0 85 170 340 Feet

9
MW-WES-03A

2/17/2014 Vinyl chloride 2ug/L

MW-WES-08D

2/20/2014 Vinyl chloride 3.2ug/L

2/20/2014 cis-1,2-Dichloroethylene 28.3ug/L

3/20/2014 cis-1,2-Dichloroethylene 21.3ug/L

MW-WES-07

2/20/2014 Vinyl chloride 10ug/L

3/20/2014 Vinyl chloride 7.7ug/L

MW-WES-06D

2/19/2014 Vinyl chloride 115ug/L

3/20/2014 Vinyl chloride 66.9ug/L

3/20/2014 Vinyl chloride 66.1ug/L

MW-WES-06S

2/19/2014 Vinyl chloride 74.1ug/L

3/20/2014 Vinyl chloride 47.2ug/L

MW-WES-03B

7/23/2013 Vinyl chloride 9.4ug/L

9/10/2013 Vinyl chloride 7.5ug/L

10/8/2013 Vinyl chloride 5.8ug/L

11/19/2013 Vinyl chloride 10.7ug/L

12/11/2013 Vinyl chloride 5ug/L

1/20/2014 Vinyl chloride 10.9ug/L

2/17/2014 Vinyl chloride 11.4ug/L

3/17/2014 Vinyl chloride 9.1ug/L

MW-WES-09D

2/19/2014 Vinyl chloride 48.9ug/L

2/19/2014 Vinyl chloride 46.4ug/L

3/20/2014 Vinyl chloride 31.7ug/L

MW-WES-02C

9/11/2013 Vinyl chloride 3.2ug/L

10/9/2013 Vinyl chloride 3.3ug/L

2/19/2014 Vinyl chloride 2.8ug/L

3/19/2014 Vinyl chloride 2.7ug/L

MW-WES-01C

9/11/2013 Vinyl chloride 11.3ug/L

10/9/2013 Vinyl chloride 13.5ug/L

10/9/2013 Tetrachloroethylene 7.4ug/L

11/20/2013 Vinyl chloride 18.1ug/L

1/25/2014 Vinyl chloride 19.7ug/L

1/25/2014 Vinyl chloride 21ug/L

2/18/2014 Vinyl chloride 23.3ug/L

3/19/2014 Vinyl chloride 13.7ug/L

MW-WES-01B

9/11/2013 Vinyl chloride 43.4ug/L

10/9/2013 Vinyl chloride 19.8ug/L

11/20/2013 Vinyl chloride 38.7ug/L

2/18/2014 Vinyl chloride 33.3ug/L

3/19/2014 Vinyl chloride 27.8ug/L

3/19/2014 Vinyl chloride 23.2ug/L

MW-WES-08S

2/20/2014 Vinyl chloride 24.4ug/L

2/20/2014 cis-1,2-Dichloroethylene 298ug/L

3/20/2014 Vinyl chloride 20.4ug/L

3/20/2014 cis-1,2-Dichloroethylene 269ug/L

MW-WES-02B

9/11/2013 Vinyl chloride 6.8ug/L

9/11/2013 cis-1,2-Dichloroethylene 5.4ug/L

10/9/2013 Vinyl chloride 6.7ug/L

10/9/2013 cis-1,2-Dichloroethylene 7.2ug/L

11/20/2013 Vinyl chloride 7.9ug/L

11/20/2013 cis-1,2-Dichloroethylene 7.9ug/L

1/21/2014 Vinyl chloride 7.5ug/L

1/21/2014 cis-1,2-Dichloroethylene 9.5ug/L

2/19/2014 Vinyl chloride 6.2ug/L

2/19/2014 cis-1,2-Dichloroethylene 10.2ug/L

2/19/2014 Vinyl chloride 6.7ug/L

2/19/2014 cis-1,2-Dichloroethylene 11ug/L

3/19/2014 Vinyl chloride 3.7ug/L

3/19/2014 cis-1,2-Dichloroethylene 8.9ug/L

MW-WES-09S

2/19/2014 Vinyl chloride 151ug/L

2/19/2014 cis-1,2-Dichloroethylene 12.1ug/L

3/20/2014 Vinyl chloride 133ug/L

3/20/2014 cis-1,2-Dichloroethylene 7.1ug/L

MW-WES-02A

9/11/2013 cis-1,2-Dichloroethylene 13.5ug/L

10/9/2013 cis-1,2-Dichloroethylene 13.4ug/L

11/20/2013 cis-1,2-Dichloroethylene 11.8ug/L

1/21/2014 cis-1,2-Dichloroethylene 13.2ug/L

2/19/2014 cis-1,2-Dichloroethylene 18.1ug/L

3/19/2014 cis-1,2-Dichloroethylene 17.8ug/L

NORTH ST

MICHIGAN ST

ALTON AV

EXETER AV

BERWICK AV

WALNUT STLUETT AV

VERMONT ST

SOMERSET AV

LIVINGSTON AV

ROCHESTER AV

WILCOX ST

NEW YORK ST

HOLT RD

VERMONT ST

ALTON AV

BERWICK AV

VERMONT ST

State of Indiana 2011

This map is intended to serve as an aid in graphic representation 

only. This information is not warranted for accuracy or other purposes.

Mapped By:

Shane Moore, Office of Land Quality

Date:04/13/2015

Sources:

Non Orthophotography 

Data - Obtained from the State of Indiana Geographical

 Information Office Library

Samplling Data is from IDEM SampDB

Orthophotography - Obtained from Indiana Map Framework Data

(www.indianamap.org) 

Map Projection: UTM Zone 16 N Map Datum: NAD83

μ

West Vermont Drinking Water Contamination

Monitoring Well Sampling - EPA 2013, 2014

Speedway, Marion County, Indiana

Marion Hendricks

Morgan Johnson

Boone Hamilton

Shelby

Hancock

Marion County

Sample Locations

0 62.5 125 250 Meters

0 212.5 425 850 Feet

10
8/10/2015 X:\OLQ\OLQGIS\Projects\WestVermont-MichiganPlaza\IDEM\Fig1_8_idem.mxd m.banh

1/4 Mile

1/2 Mile

1 Mile

2 Miles

3 Miles

4 Miles

#2

#7R

WR 7

WR 8

RS 26

RS 22

RS 27

RS 28

RS D

RS 7

Genuine 

Auto Parts

Source Area

RS 9

RS B

RS C #6

RS 8

#13 RS 18

WR 9

RS 19

#12

#14R

#4 #3

WR 3

RS 29

RS 2

#10R

#9

RS 17

RS A

#8R

#15

#11R

DNR

179985

DNR

414789

Riverside Well (RS)

Speedway Well

White River Well (WR)

* DNR Well

Area of Residences

Supplied by Private Ground Water Wells

- West Vermont Street/Cossell Road

Area of Residences

Supplied by Private Ground Water Wells

- Fleming Street/Vine Street

Prepared For: EPA Prepared By: Tetra Tech Inc.

* Figure 1-8

4-Mile Radius Map

Genuine Auto Parts

West Vermont Groundwater Contamination OS

West Vermont Street and Cossell Road

Speedway, Marion County, Indiana

Date Saved: 8/10/2015 EPA Contract No.: EP-S5-13-01 TDD No.: S05/0001-1404-009

Source: USGS 7.5-Minute Topographic Quadrangle Map, Indianapolis West, IN 1998

0.5 0 0.5

±

Miles

Source area = outline of the outer most source sample locations. 

Coordinate System = NAD 1983 State Plane Indiana East-Feet

* = Indiana Department of Environmental Managment (IDEM)

Addedl/Modified Information to Tetra Tech Figure 1-8 Map

*This map is intended to serve as an aid in

graphic representation only. This information

is not warranted for accuracy or other purposes.

*Mapped By: Shane Moore

 Office of Land Quality

*Date Modified: August 10, 2015

*Well Name

*Distance from

Genuine Auto Parts 

(Mile)

Speedway 2 1.367

Speedway 3 1.683

Speedway 4 1.701

Speedway 6 1.360

Speedway 7R 1.489

Speedway 8R* 1.936

Speedway 9 2.144

Speedway 10R* 1.897

Speedway 11R* 2.309

Speedway 12 2.363

Speedway 13 2.097

Speedway 14R 2.267

Speedway 15 1.475

Riverside RS2 2.473

Riverside RS7 2.298

Riverside RS8 2.289

Riverside RS9 2.317

Riverside RS17 2.126

Riverside RS18 2.063

Riverside RS19 1.925

Riverside RS22 2.470

Riverside RS26 2.368

Riverside RS27 2.437

Riverside RS29 2.202

Riverside RSA 2.384

Riverside RSB 2.351

Riverside RSC 2.279

Riverside RSD 2.351

White River WR3 3.088

White River WR7 3.054

White River WR8 3.022

White River WR9 2.926

DNR Reference 

Number 414789 1.057

DNR Reference 

Number 179985 1.880

11
8/10/2015 X:\OLQ\OLQGIS\Projects\WestVermont-MichiganPlaza\IDEM\Fig1-9_idem.mxd m.banh

1/4 Mile

1/2 Mile

1 Mile

2 Miles

3 Miles

4 Miles

#2

#7R

WR 7

WR 8

RS 26

RS 22

RS 27

RS 28

RS D

RS 7

Genuine 

Auto Parts

Source Area

RS 9

RS B

RS C

#6

RS 8

#13 RS 18

WR 9

RS 19

#12

#14R

#4 #3

WR 3

RS 29

RS 2

#10R

#9

RS 17

RS A

#8R

#15

#11R

DNR

179985

DNR

414789

Riverside Well (RS)

Speedway Well

White River Well (WR)

* DNR Well

Area of Residences

Supplied by Private Ground Water Wells

- West Vermont Street/Cossell Road

Area of Residences

Supplied by Private Ground Water Wells

- Fleming Street/Vine Street

Prepared For: EPA Prepared By: Tetra Tech Inc.

* Figure 1-9

4-Mile Radius Map

Michigan Plaza

West Vermont Groundwater Contamination OS

West Vermont Street and Cossell Road

Speedway, Marion County, Indiana

Date Saved: 8/10/2015 EPA Contract No.: EP-S5-13-01 TDD No.: S05/0001-1404-009

Source: USGS 7.5-Minute Topographic Quadrangle Map, Indianapolis West, IN 1998

0.5 0 0.5

±

Miles

Source area = outline of the outer most source sample locations. 

Coordinate System = NAD 1983 State Plane Indiana East-Feet

* = Indiana Department of Environmental Managment (IDEM)

Addedl/Modified Information to Tetra Tech Figure 1-9 Map

*This map is intended to serve as an aid in

graphic representation only. This information

is not warranted for accuracy or other purposes.

*Mapped By: Shane Moore

 Office of Land Quality

*Date Modified: August 10, 2015

*Well Name

*Distance from

Michigan Plaza

(Mile)

Speedway 2 1.526

Speedway 3 1.787

Speedway 4 1.808

Speedway 6 1.515

Speedway 7R 1.642

Speedway 8R* 2.057

Speedway 9 2.281

Speedway 10R* 2.041

Speedway 11R* 2.471

Speedway 12 2.528

Speedway 13 2.269

Speedway 14R 2.424

Speedway 15 1.576

Riverside RS2 2.446

Riverside RS7 2.238

Riverside RS8 2.235

Riverside RS9 2.266

Riverside RS17 2.135

Riverside RS18 2.093

Riverside RS19 1.965

Riverside RS22 2.452

Riverside RS26 2.330

Riverside RS27 2.387

Riverside RS29 2.151

Riverside RSA 2.379

Riverside RSB 2.358

Riverside RSC 2.251

Riverside RSD 2.303

White River WR3 3.066

White River WR7 3.043

White River WR8 3.004

White River WR9 2.919

DNR Reference 

Number 414789 1.175

DNR Reference 

Number 179985 1.800

12
4017 Cossell Rd

1/13/2010 Vinyl chloride ND

4018 Cossell Rd

12/29/2009 Vinyl chloride ND

4012 Cossell Rd

12/1/2009 Vinyl chloride 62.7ug/L

12/29/2009 Vinyl chloride 45.8ug/

4044 W Vermont St

12/11/2009 Vinyl chloride ND

11/4/2010 Vinyl chloride ND

4018 W Vermont St

6/11/2009 Vinyl chloride 4.5ug/L

7/22/2009 Vinyl chloride 5.1ug/L

7/27/2009 Vinyl chloride 4.3ug/L

8/5/2009 Vinyl chloride 4.6ug/L

8/12/2009 Vinyl chloride 5.6ug/L

8/20/2009 Vinyl chloride 5.2ug/L

8/27/2009 Vinyl chloride 1.3ug/L

9/3/2009 Vinyl chloride 4.5ug/L

9/10/2009 Vinyl chloride 3.6ug/L

9/17/2009 Vinyl chloride 3.6ug/L

11/30/2009 Vinyl chloride 2.3ug/L

12/14/2009 Vinyl chloride 1.4ug/L

4042 W Vermont St-KitchenSink

6/11/2009 Vinyl chloride 2.1ug/L

6/25/2009 Vinyl chloride 1.5ug/L

7/9/2009 Vinyl chloride 1.7ug/L

7/9/2009 Vinyl chloride 1.5ug/L

7/27/2009 Vinyl chloride 0.77ug/L

8/12/2009 Vinyl chloride 1.2ug/L

8/27/2009 Vinyl chloride 1.8ug/L

9/3/2009 Vinyl chloride 0.73ug/L

9/10/2009 Vinyl chloride 0.85ug/L

9/17/2009 Vinyl chloride 0.59ug/L

11/30/2009 Vinyl chloride ND

12/29/2009 Vinyl chloride ND

1/13/2010 Vinyl chloride 2.6ug/L

1/13/2010 Vinyl chloride 0.53ug/L

VERMONT ST

This map is intended to serve as an aid in graphic representation 

only. This information is not warranted for accuracy or other purposes.

Mapped By:

Shane Moore, Office of Land Quality

Date:04/13/2015

Sources:

Non Orthophotography 

Data - Obtained from the State of Indiana Geographical

μ

West Vermont Drinking Water Contamination

Marion County Health Dept. Sampling Event

Speedway, Marion County, Indiana

Marion Hendricks

Boone Hamilton

Hancock

Marion County

Sampling Locations

0 25 50 100 Meters

L

MICHIGAN ST

State of Indiana 2011

 Information Office Library

Samplling Data is from IDEM SampDB

Orthophotography - Obtained from Indiana Map Framework Data

(www.indianamap.org) 

Map Projection: UTM Zone 16 N Map Datum: NAD83

Morgan Johnson

Shelby

0 85 170 340 Feet

13
14

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16

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17

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23

West Vermont Drinking Water Contamination

SUMMARY

The West Vermont Drinking Water Contamination consists of overlapping contaminated 

ground water releases from sources on two properties in a commercial/residential area of 

Indianapolis, Indiana. See Figure 1-1 for a Location of the area within the State of Indiana. The 

sources are located at the Genuine Parts facility and at Michigan Plaza. Michigan Plaza is 

located approximately 1100 feet south of the Genuine Parts property as shown on Figure 1-3. 

Initially identified as potential sources (Figure 1-3), volatile organic compound (VOC) 

contamination has been confirmed in both subsurface soils and ground water monitoring wells 

at the Genuine Parts and Michigan Plaza facilities (Section 2.2 and Section 3.1.1 of this HRS 

Documentation Record). Based on 2014 sampling, Level I concentrations of vinyl chloride also 

are documented in the ground water within two residential wells downgradient of the sources 

and within the city of Indianapolis (Refs. 24, pp. 3, 6, 8, 10, 13, 15, 17, 21, 23, 25, 27, 29, 31; 

25, pp. 8, 10, 17, 20, 23-26; 26, pp., 8, 18, 21, 24, 27, 33; 27, pp. 3, 15, 18). The two impacted 

residential wells lie within a neighborhood where 21 additional residences obtain drinking water 

from their own private wells (Figure 1-3). The private wells are the primary source of drinking 

water for the residents. Although scored in this HRS Documentation Record as a single site 

listing, both Genuine Parts and Michigan Plaza sources score separately (see the scoresheets 

in Attachments 1 and 2 to this HRS Documentation Record).

The West Vermont Drinking Water Contamination site lies between three municipal well 

fields (Figure 1-5). The Riverside Municipal Well Field is located approximately between two 

(2) and three (3) miles to the east-northeast, the White River Municipal Well Field is located 

between three (3) and four (4) miles to the northeast, and the Speedway Municipal Well Field

is located between one (1) and three (3) miles to the northwest (Figure 1-5). 

The commingled ground water plume is depicted aerially by ground water sample 

locations with detections of trichloroethylene (TCE), cis-1,2-DCE, trans -1, 2 dichloroethylene 

(trans -1,2-DCE), 1,1 dichloroethane (1,1- DCA), and vinyl chloride (VC) exceeding non-detect 

background concentrations (Section 3.1.1, Contaminated Ground Water Samples, Tables 5 

and 6 of this HRS documentation record). Concentrations of VC have been detected in the 

residential wells. The depicted plume is bounded to the north by a city park, Little Eagle Creek 

to the east, to the south by West Vermont Street, and to the west by Tomlinson Street (Figure 

1-2).

The depicted plume encompasses approximately 20.2 acres (Figure 1-2 of this HRS 

documentation record; Sections 3.0.1 and 3.1.1 of this HRS documentation record). The area 

of the ground water plume is based on available samples that meet the criteria for an observed 

release (Section 3.1.1 of this HRS documentation record).
24

 HISTORY

In 2009 and 2010, the Marion County Public Health Department (MCPHD) documented, 

via numerous sampling events, the presence of vinyl chloride at three residences along West 

Vermont Street and Cossell Road. Concentrations of vinyl chloride were found to be as high 

as 62.7 micrograms per liter (μg/L) in the ground water in one of the three residential wells 

(Refs. 14, pp. 8, 11, 13; 24, pp. 3, 5-70; 40, pp. 413, 414, 416, 452, 535, 559, 646; Figure 1-10 

of this HRS Documentation Record). Including the three homes with vinyl chloride in the 

private wells, there are 23 homes in the Vermont and Cossell Road neighborhood that rely on 

private water wells as their only source of water (Ref. 109, p. 1, 3; Figure 1-3). 

On October 8, 2009, IDEM formally requested assistance from U.S. EPA to address the 

contamination in the residential wells (Ref. 31, p. 1, 2). In November 2009 and February 2010, 

the U.S. EPA installed temporary water treatment systems in the three residences to mitigate 

vinyl chloride in the drinking water (Ref. 38, p. 12). In March 2010, U.S. EPA conducted indoor 

air sampling at three of the residences and detected concentrations of PCE and other 

degradation products (Ref. 47, p. 7-11, 14-15). In July 2010, EPA’s contractor conducted 

additional residential ground water sampling (Table 7) of this HRS Documentation Record; 

Figure 1-6 of this HRS Documentation Record). Concentrations of PCE, Cis 1, 2-DCE, and 

vinyl chloride were detected in six (6) residential ground water samples (Table 7 of this HRS 

Documentation Record; Figure 1-6 of this HRS Documentation Record). On September 26, 

2011, EPA approved an Action Memorandum to expend up to $237,000 to conduct time-critical 

removal activities that included a hydrogeologic investigation to find the source of 

contamination in the residential wells (Refs. 32, p. 1; 49, p.1; 53, p. 6). 

On January 30, 2013, EPA completed a Technical Memorandum Analytical and 

Hydrogeological Evaluation (Technical Memorandum) for the West Vermont Drinking Water 

Contamination area (Ref. 38, p. 1). This memorandum documented the findings and activities 

conducted by the U.S. EPA and Superfund Technical Assessment and Response Team 

(START) in November and December 2011 during an analytical and hydrogeologic 

investigation (Ref. 38, p. 9). This Technical Memorandum also documents and incorporates 

specific historical information and analytical data for the purpose of determining the potential 

source or sources of contamination in West Vermont Street residential drinking water wells 

(Ref.38, p. 9). 

START installed 13 monitoring wells in the West Vermont area in November 2011. The 

wells were surveyed using a benchmark established during a previous survey (Ref. 38, p. 25). 

On December 6 and 7, 2011, 152 monitoring wells, located at and near Michigan Plaza and 

Genuine Parts, as well as another nearby facility, Allison Transmission, were gauged and 66 

monitoring wells were sampled (Ref. 38, p. 25). Cis-1,2-DCE, Trans-1,2 DCE, TCE, PCE, 

and/or Vinyl chloride were detected in several of the monitoring wells samples (Refs. 38, pp.

48-50, 78, 79, 420-429, 445; 50, pp.4-236; 51, pp. 9-11, 24-26, 41-51).

The Technical Memorandum concluded that the study area for the analytical and 

hydrogeological evaluation contains several potential sources of vinyl chloride contamination in 

the residential wells, including Allison Transmission, Genuine Parts, and Michigan Plaza. Each 

potential source has had releases of tetrachloroethylene (PCE) or trichloroethylene (TCE), with 

vinyl chloride as a natural breakdown product (Ref. 38, p. 36). 
25

The Technical Memorandum stated that monitoring wells along West Michigan Street 

were installed to monitor contaminant migration from Allison Transmission. These monitoring 

wells have showed no-detect results for PCE, TCE, DCE, and VC (Ref. 38, p. 36). However, 

the U.S. EPA determined that at least two monitoring wells on West Michigan Street directly 

north of the residential area are screened in zones deeper than contamination at Allison 

Transmission and deeper than the residential wells (Ref. 38, p. 36). During the investigation, 

the U.S. EPA installed two additional nested monitoring well sets along West Michigan Street 

to fill this data gap (Ref. 38, p. 36). The data collected confirm that PCE, TCE, and vinyl 

chloride are not present between Allison Transmission and the West Vermont Street 

residential area (Ref. 38, p. 36). The report stated that the contamination at the Allison 

Transmission plant is restricted to the Allison Transmission property, and Allison Transmission 

is not a contributor of contamination to the residential area (Ref. 38, p. 36). The Technical 

Memorandum stated that the U.S. EPA determined that both Genuine Parts and Michigan 

Plaza are actual or potential contributors to VC contamination in the residential area (Ref. 38, 

p. 37). 

The conceptual site model presented in the 2013 Remediation Work Plan prepared on 

behalf of Michigan Plaza projected similar findings as those in the Technical Memorandum 

regarding Michigan Plaza source and ground water VOC contamination and Genuine Parts 

source and ground water VOC contamination. The Remediation Work Plan further concluded 

at least limited commingling of the ground water releases (Ref. 19, pp. 15, 52).

The U.S. EPA and General Motors Corporation (GM) have entered into a performancebased Resource Conservation and Recovery Act (RCRA) Corrective Action agreement 

(Agreement) with the effective date of April 27, 2005. Pursuant to the Agreement, GM has 

worked in cooperation with the U.S. EPA to investigate, and as necessary, stabilize and 

remediate releases of hazardous wastes or hazardous constituents at or from Allison 

Transmission (Ref. 35, p. 38).

From September 2013 through March 2014, U.S. EPA continued sampling of monitoring

wells. Concentrations of vinyl chloride and cis 1, 2-Dichloroethylene continued to be detected 

in the monitoring wells (Table 8 of this HRS Documentation Record; Figure 1-7 of this HRS 

Documentation Record).

According to an email outline by the Marion County Health Department, there are 20 

residences in the immediate area that obtain drinking water from their private wells (Ref. 109, 

pp. 1, 3; Figure 1-3 of this HRS Documentation Record). 

A Preliminary Assessment (PA) was conducted by IDEM for the West Vermont Drinking 

Water Contamination (Ref. 53, p.1). The PA was finalized by U.S. EPA on March 11, 2015 (Ref. 

53, p. 2). The PA documented the contaminated ground water at the three residential wells Ref. 

53, p. 6). The PA also discussed the environmental activities that were conducted by the U.S.

EPA, Allison Transmission, Genuine Parts, and Michigan Plaza. The environmental activities 

included the installation of monitoring wells, the collection of ground water samples at the above 

mentioned facilities and the residential wells, and other environmental activities (Ref. 53, pp. 6-

13). 
26

In October and November 2014, U.S. EPA collected 45 ground water samples. The 

ground water samples were obtained from selected private residential wells located along West 

Vermont and Cossell Avenue from nearby established monitoring wells (Refs. 76, pp. 8, 9, 12, 

13, 14, 15; 89, p.1; 90, p.1; 91, p.1; 92, p. 1, 94, p. 1; Table 5 and Table 6 of this HRS 

Documentation Record). The ground water samples were analyzed for VOCs (Refs. 89, p. 2; 

90, p. 2; 91, p. 2; 92, p. 2, 94, p. 1) In addition, two background monitoring wells (WVS-10 and 

WVS-11) were installed north of Genuine Parts property (Ref.84, pp. 18-21; 77, pp. 1-6; 87, p. 

1, 2; Figure 1-2 of this HRS Documentation Record). Laboratory analysis of the ground water 

from the residential private wells and from monitoring wells revealed detections of vinyl chloride, 

trichloroethylene, tetrachloroethylene, cis, 1, 2- dichloroethene and trans 1, 2 dichloroethene 

(Table 5 and Table 6 of this HRS Documentation Record). No contaminants of concern were 

detected in any of the background monitoring wells (Figure 1-2; Table 4 of this HRS 

Documentation Record).
27

2.2 SOURCE CHARACTERIZATION

2.2.1 Source Identification

Number of Source: 1

Name and description of the source: Leaky Sewer Line – Michigan Plaza 

Source Type: Contaminated Soil

Source 1 is associated with historic solvent discharges from a dry cleaners, Accent Cleaners, 

to a leaky sewer line (Ref.19, pp. 14, 15, 70, 129, 149, 150). Analytical results from subsurface 

soil samples obtained from the leaky sewer areas indicate the presence of trichloroethylene 

(TCE), cis 1,2,-dichloroetheyene (CIS 1,2 DCE), and tetrachloroethylene (PCE) (Figure 1-4; 

Table 1 of this HRS Documentation Record). 

The construction of a new sewer line connection to the existing manhole at the bend of a 

sewer line which travels from the south to the north side of Michigan Street was conducted in 

October 2007. During the excavation activities, PCE and TCE were detected in a soil sample 

obtained at approximately 4 feet in the excavation area. Higher concentrations of PCE and 

TCE were also detected at approximately 9 feet obtained from the same exact area (Ref. 40, 

pp. 52, 53).

Location of Source

The source area associated with the leaky sewer line is located on the south sector of 

Michigan Plaza, northern and southern areas of Michigan Street located north of Michigan 

Plaza, and along the south and southeastern property of Maple Creek Village Apartments (Ref. 

19, pp. 15, 70, 129, 132, 142, 143, 145-151).

2.2.2 Hazardous Substances Associated with Source No. 1

Table 1 below depicts the date, sample identification, hazard substance detected, hazardous 

substance concentration, and other associated information that were obtained from the 

Michigan Plaza source area. Refer to Figure 1-4 of this HRS Documentation Record for an 

aerial view of the Michigan Plaza Source area. Subsurface soils in the area consist largely of 

loam (silty, sandy and/or sandy clay loams) (Refs. 19, pp. 33, 34; 25, pp. 36-77). Soil and 

ground water samples were analyzed in accordance with U.S. EPA Method 8260 (Refs. 26, p. 

153; 57, p. 4; 148).
28

Table 1

Source No. 1 Soil Sample Table

Michigan Plaza

(Soils Obtained Greater Than Two Feet Above The Water Table)

Lab ID Client 

Sample ID #

Date

Collected Location

Depth 

Below 

Ground 

Surface

Hazardous 

Substance

Hazardous 

Substance 

Concentration 

(Adjusted 

Concentration)

RL Units Reference

09-0105 SB-3 (2-3) 2/3/2009 SB-3 2-3 Feet PCE 71 J+1 (7.1)* 5.0 μg/kg

26, pp. 

128, 153; 

57, pp. 6, 

13, 25; 81, 

pp. 8, 

507931001 SEWER EXC. 

(4’) 10/1/2007 Sewer Excavation 4 Feet

PCE 243 5.6 μg/kg

27, pp. 

515, 516, 

526; 

cis-1,2-

DCE 11.7 5.6 μg/kg

TCE 57.7 5.6 μg/kg

5023501014 SB-15 (4-6’) 2/17/2009 SB-15 4-6 Feet PCE 110 J1 (110) 5.4 μg/kg

26, pp. 

387, 408; 

57, pp. 6, 

13, 19; 81, 

p. 8

5023501020 SB-17 (4-6’) 2/17/2009 SB-17 4-6 Feet PCE 77.2 5.8 μg/kg 26, pp. 

393, 408

5096084002 MMW-P-22-

LA (4-6) 4/10/2014 MMW-P22-LA 4-6 Feet

cis-1,2-

DCE

234 J2 (234) 

(DL) 203 μg/kg 57, pp. 9, 

13, 37, 38;

81, p. 8; 

95, pp. 3, 

7, 8, 24 

PCE 62.6 J+2 (6.26) 4.0 μg/kg

TCE 46.1 J+2 (21.84) 4.0 μg/kg

5023333001 SB-11 (5-6’) 2/13/2009 SB-11 5-6 Feet

PCE 3,890 (DL) 261 μg/kg 26, pp. 

291, 293, 

TCE 25.3 5.2 μg/kg 339

5023333002 SB-11 (8-9’) 2/13/2009 SB-11 8-9 Feet

PCE 4,320 (DL) 260 μg/kg 26, pp. 

291, 295, 

TCE 34.0 5.2 μg/kg 339

507931002 SEWER EXC. 

(9’) 10/1/2007 Sewer Excavation 9 Feet

PCE 2,300 (DL) 273 μg/kg

27, pp. 

517, 518, 

526

cis-1,2-

DCE 15.4 5.5 μg/kg

TCE 55.4 5.5 μg/kg

5023501015 SB-15 (8-10’) 2/17/2009 SB-15 8-10 Feet PCE 130 J+2 (13.0) 5.2 μg/kg

26, pp. 

388, 408; 

57, pp. 6, 

13,20;81, 

p. 8, 

5088407003 MGW-9D (8-

10) 10/14/2013 MGW-9D 8-10 Feet PCE 11,100 (DL) 888 μg/kg

98, pp. 

390, 397, 

420

09-0094 SB-4 (10-11’) 2/3/2009 SB-4 10-11 

Feet PCE 118 J+1 (11.8)* 5.0 μg/kg

26, pp. 

106, 152; 

57, pp. 6, 

14, 26; 81, 

pp. 8, 11
29

5023333005 SB-13 (10-

11’) 2/13/2009 SB-13 10-11 Feet

PCE 1,640 (DL) 136 μg/kg

26, pp. 

291, 300, 

301, 339

cis-1,2-

DCE 45.8 5.4 μg/kg

TCE 55.7 5.4 μg/kg

5077147001 MMW-10S-A 

(10-12) 3/6/2013 MMW10S-A 

10-12 

Feet PCE 1,640 (DL) 484 μg/kg 28, pp. 289, 292

5096109001 MMW-P-22-

LA (10-12) 4/11/2014 MMW-P22-LA

10-12 

Feet

cis-1,2-

DCE 136 5.3 μg/kg

78, pp. 3, 

5, 23 PCE 724 (DL) 533 μg/kg

TCE 42.4 5.3 μg/kg

09-0092 SB-3 (11-12) 2/3/2009 SB-3 11-12 

Feet PCE 6.09 (DL) 1 mg/kg 26, pp. 102, 152

5095863001 MMW-21-LA 

(11-12) 4/7/2014 MMW-21-LA 

11-12 

Feet

cis-1,2-

DCE 6.1 4.8 μg/kg

73, pp. 4, 

5, 6, 28 PCE 34,700 (DL) 2,050 μg/kg

TCE 18.3 4.8 μg/kg

5077222004 MMW-P-02-A 

(12-14) 3/7/2013 MMW-P02-A

12-14 

Feet PCE 118 4.9 μg/kg 28, pp. 328, 336

5095863002 MMW-21-LA 

(12-14) 4/7/2014 MMW-21-LA 

12-14 

Feet

cis-1,2-

DCE 1,310 (DL) 211 μg/kg

73, pp. 4, 

7, 8, 28 PCE 49,000 (DL) 2,110 μg/kg

TCE 1,390 (DL) 211 μg/kg

Notes:

# Number

DCE Dichloroethene

DL Concentration exceeded the instrument's calibration range. Samples were reanalyzed using a dilution factor and the results are 

reported from the diluted analysis. Dilution in and of itself does not indicate any associated data quality issue

ID Identification

J1 Laboratory control sample yielded a low recovery; the result is estimated with a low bias. Results for release samples require 

no adjustment according to procedures described in EPA 540-F-94-028, Using Qualified Data to Document an Observed Release 

and Observed Contamination, November 1996 (Ref. 81, pg. 5).

J2 Reanalysis was outside the holding time; the result is estimated with a low bias. Results for release samples require no adjustment 

according to procedures described in EPA 540-F-94-028, Using Qualified Data to Document an Observed Release and Observed 

Contamination, November 1996 (Ref. 81, pg. 5).

J+1 Surrogate displayed recoveries above the quality control limit; the result is estimated with a high bias. Results for release samples 

were adjusted according to procedures described in EPA 540-F-94-028, Using Qualified Data to Document an Observed Release 

and Observed Contamination, November 1996 (Ref. 81,pg. 5).

J+2 Excessive surrogate recovery; the result is estimated with a high bias. Results for release samples were adjusted according to 

procedures described in EPA 540-F-94-028, Using Qualified Data to Document an Observed Release and Observed Contamination, 

November 1996 (Ref. 81,pg. 5). Adjusted value is shown in parentheses. 

μg/kg Micrograms per kilogram

mg/kg Milligrams per kilogram

PCE Tetrachloroethene

RL Reporting limit; The reporting limit presented is equivalent to the sample quantitation limit as defined by HRS Section 1.1, Definitions

(Refs. 1, pp. 59, 60; 150)

TCE Trichloroethene

VC Vinyl chloride
30

While not required for HRS scoring purposes, background samples are presented below to 

show the relative increase of contaminant levels in source samples over background levels. 

Table 2 below depicts the background samples that were collected from borings located 

between Source 1 and Source 2. The table depicts the date, sample identification, the lab 

analysis results of the background samples, and other associated information. No detections of 

any volatile organic compounds were detected in the background soil samples. Refer to Figure 

1-4 of this HRS Documentation Record for an aerial location of the background soil samples.

Table 2

Background Soil Sample Table

(Soils Obtained Greater Than Two Feet Above The Water Table)

Lab ID Consultant 

Sample # Date Location

Depth 

Below 

Ground 

Surface

Hazardous 

Substance

Hazardous 

Substance 

Concentration 

(Adjusted 

Concentration)

RL Units Reference

503733172 MMW-6D 8/23/2004 MMW-6D 11-12 Feet

1,1-DCE 5.0 U 5.0 μg/kg

99, pp. 36, 

121, 122, 134

cis-1,2-

DCE 5.0 U 5.0 μg/kg

trans-1,2-

DCE 5.0 U 5.0 μg/kg

PCE 5.0 U 5.0 μg/kg

TCE 5.0 U 5.0 μg/kg

VC 2.0 U 2.0 μg/kg

503744989 MMW-4D 

(9-10) 8/25/2004 MMW-4D 9-10 Feet

1,1-DCE 5.0 U 5.0 μg/kg

99, pp. 36, 

108, 109, 119

cis-1,2-

DCE 5.0 U 5.0 μg/kg

trans-1,2-

DCE 5.0 U 5.0 μg/kg

PCE 5.0 U 5.0 μg/kg

TCE 5.0 U 5.0 μg/kg

VC 2.0 U 2.0 μg/kg

503750598 MMW-3S 

(9-10) 8/26/2004 MMW-3S 9-10 Feet

1,1-DCE 5.0 U 5.0 μg/kg

99, pp. 36, 95, 

96, 106

cis-1,2-

DCE 5.0 U 5.0 μg/kg

trans-1,2-

DCE 5.0 U 5.0 μg/kg

PCE 5.0 U 5.0 μg/kg

TCE 5.0 U 5.0 μg/kg

VC 2.0 U 2.0 μg/kg
31

503740128 MMW-5D

(11) 8/24/2004 MMW-5D 11 Feet

1,1-DCE 5.0 U 5.0 μg/kg

99, pp. 36, 

139, 140, 150

cis-1,2-

DCE 5.0 U 5.0 μg/kg

trans-1,2-

DCE 5.0 U 5.0 μg/kg

PCE 5.0 U 5.0 μg/kg

TCE 5.0 U 5.0 μg/kg

VC 2.0 U 2.0 μg/kg

503730343 MMW-2S 8/19/2004 MMW-2S 13 Feet

1,1-DCE 5.0 U 5.0 μg/kg

99, pp. 36, 82, 

83 

cis-1,2-

DCE 5.0 U 5.0 μg/kg

trans-1,2-

DCE 5.0 U 5.0 μg/kg

PCE 5.0 U 5.0 μg/kg

TCE 5.0 U 5.0 μg/kg

VC 2.0 U 2.0 μg/kg

Notes:

# Number

DCE Dichloroethene

ID Identification

μg/kg Micrograms per kilogram

PCE Tetrachloroethene

RL Reporting limit; The reporting limit presented is equivalent to the sample quantitation limit as defined by HRS Section 1.1, Definitions

(Refs. 1, pp. 59, 60; 150)

TCE Trichloroethene

U Not detected at or above adjusted reporting limit

VC Vinyl chloride

The following hazardous substances are associated with the source:

- trichloroethylene (TCE ) 

- tetrachloroethylene (PCE)

- cis-1,2-dichloroethylene (cis-1,2-DCE) 
32

 

Location of the source with reference to a map: 

See Figures 1-2, 1-4, and 1-5 which show an aerial view of the location of Source No. 1. 

2.2.3 Hazardous Substances Available to a Pathway

Containment Description Containment 

Factor Value References

Gas release to air:

The air migration pathway was not evaluated; 

therefore, gas containment was not evaluated

Not Scored

Particulate release to air:

The air migration pathway was not evaluated; 

therefore, gas containment was not evaluated.

Not Scored

Release to ground water:

The applicable containment factor value was 

determined based on existing analytical evidence 

of hazardous substances in ground water from 

private public wells and established monitoring 

wells. There is no liner, either engineered or 

natural, for the source areas at Michigan Plaza 

and Genuine Parts. Therefore, based on evidence 

of hazardous substance migration from source 

area and lack of a liner, the highest Ground Water 

Migration Pathway Containment Factor Value of 

10 was assigned to Source No. 1 as specified in 

Table 3-2 of the HRS Rule. 

10

Refs. 1, Table 3-2, 

Section 3.1.2.1, p. 70; 

149, p. 1

See Section 3.1.1 of this 

HRS documentation

record

Release via overland migration and/or flood:

The surface water pathway was not scored; 

therefore, surface water overland/flood migration 

component containment was not evaluated

Not Scored
33

2.4.2 Hazardous Waste Quantity

2.4.2.1 Source Hazardous Waste Quantity

2.4.2.1.1 Hazardous Constituent Quantity (Tier A)

The hazardous constituent quantity for Source No. 1 could not be adequately 

determined according to the HRS requirements; that is, the total mass of all 

Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) 

hazardous substances in the source and releases from the source is not known and 

cannot be estimated with reasonable confidence (Ref. 1, Section 2.4.2.1.1). There are 

insufficient historical and current data (manifests, potentially responsible parties (PRP) 

records, State records, permits, waste concentration data, etc.) available to adequately 

calculate the total or partial mass of all CERCLA hazardous substances in the source 

and the associated releases from the source. Therefore, there is insufficient information 

to evaluate the associated releases from the source to calculate the hazardous 

constituent quantity for Source No. 1 with reasonable confidence. As a result, the

evaluation of hazardous waste quantity proceeds to the evaluation of Tier B, hazardous

wastestream quantity (Ref. 1, Section 2.4.2.1.1, pp. 64, 65).

Hazardous Constituent Quantity Assigned Value: NS 

2.4.2.1.2. Hazardous Wastestream Quantity (Tier B)

The hazardous wastestream quantity for Source No. 1 could not be adequately 

determined according to the HRS requirements; that is, the mass of the hazardous 

wastestreams plus the mass of any additional CERCLA pollutants and contaminants in 

the source and releases from the source is not known and cannot be estimated with 

reasonable confidence (Ref. 1, Section 2.4.2.1.2). There are insufficient historical and 

current data (manifests, PRP records, State records, permits, waste concentration data, 

etc.) available to adequately calculate the total or partial mass of the wastestream plus 

the mass of all CERCLA pollutants and contaminants in the source and the associated 

releases from the source. Therefore, there is insufficient information to evaluate the 

associated releases from the source to calculate the hazardous wastestream quantity 

for Source No. 1 with reasonable confidence. Scoring proceeds to the evaluation of Tier 

C, Volume (Ref. 1, Section 2.4.2.1.2, p. 65).

Hazardous Wastestream Quantity Assigned Value: NS 

2.4.2.1.3. Volume (Tier C)

The information available on the depth of Source No. 1 is not sufficiently specific to support a 

volume reasonable confidence; therefore it is not possible to assign a volume (Tier C) for 

Source No. 1 (Ref. 1, Section 2.4.2.1.3). Source No. 1 has been assigned a value of 0 for the 

volume measure. As a result the evaluation of hazardous waste quantity proceeds to the 

evaluation of Tier D, area (Ref. 1, Section 2.4.2.1.3, p. 65).

Volume Assigned Value: 0
34

2.4.2.1.4. Area (Tier D)

The horizontal extent of Source No. 1 and the continuation of contamination between sample 

points have not been sufficiently determined; therefore, the source area is unknown, but 

greater than 0 (Ref. 1, Section 2.4.2.1.4, p. 65).

Area Assigned Value: Unknown, but > 0 

2.4.2.1.5. Source Hazardous Waste Quantity Value

Area of contaminated soil source: >0 

Highest assigned value assigned from Ref. 1, Table 2-5: > 0

Source Hazardous Waste Quantity Value: >0 (Ref. 1, Section 2.4.2.1.5, p. 65).
35

2.2.1 Source Identification

Number of Source: 2

Source Type: Soil Contamination 

Name and Description of the Source: Historic degreasing and industrial waste burial activities

– Genuine Parts

The source area is associated with former parts degreasing operations and waste burial activities 

on the west side of the Genuine Parts property (Refs. 36, p. 36; 75, p. 8). During exploratory 

trenching activities, fill material consisting of soil and occasional automotive debris parts mostly 

consisting of round flexible discs were encountered near the surface (Ref. 25, p. 12). Analytical 

results from subsurface soil samples indicate the presence of TCE, CIS 1,2 DCE, PCE, Trans 1,2 

DCE, and VC (Ref. 25, pp. 105, 106; Source Soil Sample Map from Tetra Tech, Table 2 of this 

HRS Documentation Record). 

Hazardous waste was excavated between April 9, 2001 and July 6, 2001 (Ref. 21, p. 50). During 

this time 190 loads of waste were transported and disposed at Environsafe Services of Ohio, Inc. in 

Oregon, Ohio resulting in a total of 4,981.51 tons (Ref. 21, p. 50). During the removal action, it was 

observed that buried waste extended beneath the building. Soil borings placed inside the building 

revealed that the buried waste extended beneath the building approximately 100 feet to the east 

and approximately 75 feet north from the southwest corner of the building (Ref, 36, p. 36). As 

shown in Table 3 of this HRS Documentation Record, below, soil contamination remained at the 

facility following the 2001 removal action.

Location of Source:

The source area is located on the western portion of Genuine Parts property (Refs. 25, p.106; 

36, pp. 36, 273, 274; Figure 1-4 of this HRS Documentation Record). The eastern source of 

Genuine Parts, as mentioned in the Attribution Section of Section 3.1.1 of this HRS 

Documentation Record, is not shown in Figure 1-4 due to insufficient data. The exact nature of 

historic operations and potential contaminant release mechanisms in the eastern source area 

are not known (Ref. 36, p. 34). See Section 3.1.1 for additional details.

2.2.2 Hazardous Substances Associated with Source No. 2

Table 3 on the following page depicts the date, sample identification, hazard substance detected, 

hazardous substance concentration, and other associated information that were obtained from the 

western source area located on the Genuine Parts property. Refer to Figure 1-4 of this HRS 

Documentation Record for an aerial view of the source area for Genuine Parts. Subsurface soils in 

the area consist largely of loam (silty, sandy and/or sandy clay loams) (Refs. 19, pp. 33, 34; 

25, pp. 36-77). Soil and ground water samples were analyzed in accordance with U.S. EPA 

Method 8260 (Refs. 26, p. 153; 57, p. 4; 148).
36

Table 3

Source No. 2 Soil Sample Table

Genuine Parts

(Soils Obtained Greater Than Two Feet Above The Water Table)

Lab ID Consultant 

Sample # Date Location

Depth 

Below 

Ground 

Surface

(feet)

Hazardous 

Substance

Hazardous 

Substance 

Concentration 

(Adjusted 

Concentration)

RL Units Reference

A749078 A2-WW-1 

(4’) 10/5/2006 A2-WW-1 4 Feet

cis-1,2-

DCE

1,000 J1

(1,000) 27 μg/kg 25, p. 28; 57, pp. 10, 

13 81, p. 8; 106, pp. 

181, 190 PCE 30 J1 (30) 27 μg/kg

A744579 KS-1 8/23/2006 KS-1 5 Feet TCE 6.2 5.8 μg/kg 25, p. 28; 96, pp. 3, 

7

A744586 KS-8 8/28/2006 KS-8 5 Feet TCE 20 5.4 μg/kg 25, p, 28; 96, pp. 3, 

30

A744588 KS-10 8/28/2006 KS-10 5 Feet TCE 41 5.3 μg/kg 25, p, 28; 96, pp. 3, 

37

A747903 A3-WW-4 9/25/2006 A3-WW-4 5 Feet cis-1,2-

DCE 7.9 5.8 μg/kg 25, p. 28; 97, pp. 634, 636

A747910 A3-EW-1 9/27/2006 A3-EW-1 5 Feet TCE 42 5.7 μg/kg 25, p. 28; 97, pp. 

634, 661

A747912 A3-EW-3 9/28/2006 A3-EW-3 5 Feet

cis-1,2-

DCE 6.9 5.9 μg/kg 25, p. 28; 97, pp. 

634, 666, 667 TCE 54 5.9 μg/kg

A747914 A3-SW-1 9/28/2006 A3-SW-1 5 Feet

cis-1,2-

DCE 320 5.6 μg/kg

25, p. 28; 97, pp. 

634, 672-673

trans-1,2-

DCE 12 5.6 μg/kg

TCE 1,800 (DL) 28 μg/kg

A749079 A2-WW-2 

(9’) 10/5/2006 A2-WW-2 9 Feet

cis-1,2-

DCE 130 5.3 μg/kg

25, p. 25; 106, pp. 

181, 194, 195 

TCE 40 5.3 μg/kg

A744580 KS-2 8/23/2006 KS-2 10 Feet

cis-1,2-

DCE 120 5.5 μg/kg 25, p. 28; 96, pp. 3, 

9, 10 TCE 7 5.5 μg/kg

A744582 KS-4 8/23/2006 KS-4 10 Feet

cis-1,2-

DCE 120 5.4 μg/kg

25, p. 28; 96, pp. 3, 

15, 16

trans-1,2-

DCE 8.3 5.4 μg/kg

TCE 16 5.4 μg/kg
37

A744587 KS-9 8/28/2006 KS-9 10 Feet

cis-1,2-

DCE 910 (DL) 680 μg/kg

25, p, 28; 57, pp. 10, 

13, 32; 81, p.8; 96, 

pp. 3, 32, 33 

trans-1,2-

DCE 29 5.4 μg/kg

TCE 18,000 J2 (18) 

(RA) 680 μg/kg

A744589 KS-11 8/28/2006 KS-11 10 Feet

cis-1,2-

DCE 3,700 (DL) 680 μg/kg

25, p. 28; 96, pp. 4, 

39, 40

trans-1,2-

DCE 82 27 μg/kg

TCE 340 27 μg/kg

A746417 A1/A3 East 

Wall-2 9/6/2006 A1/A3 East Wall 11 Feet

1,1- DCE 40 5.4 μg/kg

25, p. 28; 97, pp. 

193, 198, 199

cis-1,2-

DCE 2.0 (DL) 27 μg/kg

trans-1,2-

DCE 39 5.4 μg/kg

TCE 250 5.4 μg/kg

VC 8.6 5.4 μg/kg

A747151 A3-WW-3 

(10’) 9/15/2006 A3-WW-3 10 Feet

cis-1,2-

DCE 350 5.6 μg/kg

25, p. 28; 97, pp. 

367, 375, 376

trans-1,2-

DCE 20 5.6 μg/kg

PCE 150 5.6 μg/kg

TCE 11,000 (DL) 710 μg/kg

A747904 A3-WW-5 9/25/2006 A3-WW-5 10 Feet

1,1- DCE 37 5.5 μg/kg

25, p. 28; 97, pp. 

634, 639, 640

cis-1,2-

DCE 23,000 (DL) 690 μg/kg

trans-1,2-

DCE 99 5.5 μg/kg

TCE 9.3 5.5 μg/kg

VC 1,300 (DL) 690 μg/kg

A747905 A3-WW-5 

DUP 9/25/2006 A3-WW-5 10 Feet

1,1- DCE 43 5.6 mg/kg

25, p. 28; 97, pp. 

634, 643, 644

cis-1,2-

DCE 22,000 (DL) 700 mg/kg

trans-1,2-

DCE 110 5.6 μg/kg

TCE 12 5.6 μg/kg

VC 1,100(DL) 700 μg/kg

A747907 A3-NW-2 9/25/2006 A3-NW-2 10 Feet

cis-1,2-

DCE 75 5.4 μg/kg

25, p. 28; 97, pp. 

634, 650, 651

trans-1,2-

DCE 5.6 5.4 μg/kg

TCE 220 5.4 μg/kg

A747909 A3-NW-4 9/27/2006 A3-NW-4 11 Feet TCE 400 5.4 μg/kg 25, p. 28; 97, pp. 

634, 658
38

A747913 A3-EW-4 9/28/2006 A3-EW-4 11 Feet

1,1- DCE 15 5.4 μg/kg

25, p. 28; 97, pp. 

634, 669, 670

cis-1,2-

DCE 7,500 (DL) 680 μg/kg

trans-1,2-

DCE 92 5.4 μg/kg

TCE 14 5.4 μg/kg

VC 8.2 5.4 μg/kg

A747915 A3-SW-2 9/28/2006 A3-SW-2 11 Feet

cis-1,2-

DCE 1,400 (DL) 690 μg/kg

25, p. 28; 97, pp. 

634, 677, 678

trans-1,2-

DCE 33 5.5 μg/kg

VC 35 5.5 μg/kg

A749077 A2-SW-2 

(11’) 10/5/2006 A2-SW-2 11 Feet

1,1- DCE 82 5.5 μg/kg

25, p. 28; 106, pp. 

181, 186, 187 

cis-1,2-

DCE 18,000 (DL) 690 μg/kg

trans-1,2-

DCE 110 5.5 μg/kg

TCE 21,000 (DL) 690 μg/kg

VC 45 5.5 μg/kg

Notes:

# Number

DCE Dichloroethene

ID Identification

J1 Matrix interference led to a recovery below the quality control limit; the result is estimated with a low bias. Results for release 

samples require no adjustment according to procedures described in EPA 540-F-94-028, Using Qualified Data to Document an 

Observed Release and Observed Contamination, November 1996 (Ref. 81, p. 5).

J2 The matrix spike/matrix spike duplicate displayed recoveries below the quality control limit; the result is estimated with a low bias. 

Results for release samples require no adjustment according to procedures described in EPA 540-F-94-028, Using Qualified Data 

to Document an Observed Release and Observed Contamination, November 1996 (Ref. 81, p. 5).

μg/kg

Micrograms per kilogram. Concentrations were multiplied by 1,000 to convert them from milligrams per kilogram to micrograms per 

kilogram for ease of comparison to background levels presented in Table 2.

PCE Tetrachloroethene

DL Analyte was reanalyzed using Volatile Organics, Capillary Column Technique SW-846-8260B. Concentration exceeded the instrument's 

calibration range. 

Samples were reanalyzed using a dilution factor and the results are reported from the diluted analysis. Dilution in and of itself does not 

indicate any associated data quality issue

TCE Trichloroethene

VC Vinyl chloride

RL Reporting Limit; The reporting limit presented is equivalent to the sample quantitation limit as defined by HRS Section 1.1, Definitions

(Refs. 1, pp. 59, 60; 150)

While not required for HRS scoring purposes, background samples are presented in Table 2 in 

the Source No. 1 characterization section of this HRS documentation record. These 

background samples were collected from borings located between Source 1 and Source 2.and 

are used for comparison to Source No. 2 samples presented in Table 3 to show the relative 

increase of source contaminant levels over background levels. No detection of any volatile 

organic compounds were detected in the background soil samples. Refer to Figure 1-4 of this 

HRS Documentation Record for an aerial location of the background soil samples.
39

The following hazardous substances are associated with the source:

 - trichloroethylene (TCE ) 

- 1,1-dichloroethylene (1,1 -DCE)

 - cis-1, 2-dichloroethylene (cis-1,2-DCE) 

 - trans -1, 2-dichloroethylene (trans-1,2-DCE) 

 - vinyl chloride (VC)

 - tetrachloroethylene (PCE)

Location of the source with reference to a map: 

See Figures 1-2, 1-4, and 1-5 which show and aerial view of the location of Source No. 2. 

2.2.3 Hazardous Substances Available to a Pathway

Containment Description Containment 

Factor Value References

Gas release to air:

The air migration pathway was not evaluated; 

therefore, gas containment was not evaluated

Not Scored

Particulate release to air:

The air migration pathway was not evaluated; 

therefore, gas containment was not evaluated.

Not Scored

Release to ground water:

The applicable containment factor value was 

determined based on existing analytical evidence 

of hazardous substances in ground water from 

private public wells and established monitoring 

wells. There is no liner, either engineered or 

natural, for the source areas at Michigan Plaza 

and Genuine Parts. Therefore, based on 

evidence of hazardous substance migration from 

source area and lack of a liner, the highest 

Ground Water Migration Pathway Containment 

Factor Value of 10 was assigned to Source No. 1 

as specified in Table 3-2 of the HRS Rule 

10

Refs. 1, Table 3-2, 

Section 3.1.2.1, 

p.70; 149, p. 1; 

See Section 3.1.1 of 

this HRS 

documentation 

record
40

Containment Description Containment 

Factor Value References

Release via overland migration and/or flood:

The surface water pathway was not scored; 

therefore, surface water overland/flood migration 

component containment was not evaluated

Not Scored

2.4.2 Hazardous Waste Quantity

2.4.2.1 Source Hazardous Waste Quantity

2.4.2.1.1 Hazardous Constituent Quantity (Tier A)

The hazardous constituent quantity for Source No. 2 could not be adequately 

determined according to the HRS requirements; that is, the total mass of all 

Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) 

hazardous substances in the source and releases from the source is not known and 

cannot be estimated with reasonable confidence (Ref. 1, Section 2.4.2.1.1). There are 

insufficient historical and current data (manifests, potentially responsible parties (PRP) 

records, State records, permits, waste concentration data, etc.) available to adequately 

calculate the total or partial mass of all CERCLA hazardous substances in the source 

and the associated releases from the source. Therefore, there is insufficient information 

to evaluate the associated releases from the source to calculate the hazardous 

constituent quantity for Source No. 2 with reasonable confidence. As a result, the 

evaluation of hazardous waste quantity proceeds to the evaluation of Tier B, hazardous 

wastestream quantity (Ref. 1, Section 2.4.2.1.1, pp. 64, 65). 

Hazardous Constituent Quantity Assigned Value: NS 

 

2.4.2.1.2. Hazardous Wastestream Quantity (Tier B)

The hazardous wastestream quantity for Source No. 2 could not be adequately 

determined according to the HRS requirements; that is, the mass of the hazardous 

wastestreams plus the mass of any additional CERCLA pollutants and contaminants in 

the source and releases from the source is not known and cannot be estimated with 

reasonable confidence (Ref. 1, Section 2.4.2.1.2, p. 65). There are insufficient historical 

and current data (manifests, PRP records, State records, permits, waste concentration 

data, etc.) available to adequately calculate the total or partial mass of the wastestream 

plus the mass of all CERCLA pollutants and contaminants in the source and the 

associated releases from the source. Therefore, there is insufficient information to 

evaluate the associated releases from the source to calculate the hazardous 
41

wastestream quantity for Source No. 2 with reasonable confidence. Scoring proceeds to 

the evaluation of Tier C, Volume (Ref. 1, Section 2.4.2.1.2, p. 65).

Hazardous Wastestream Quantity Assigned Value: NS 

2.4.2.1.3. Volume (Tier C)

The information available on the depth of Source No. 2 is not sufficiently specific to support a 

volume reasonable confidence; therefore it is not possible to assign a volume (Tier C) for 

Source No. 2 (Ref. 1, Section 2.4.2.1.3, p. 65). Source No. 2 has been assigned a value of 0 

for the volume measure. As a result the evaluation of hazardous waste quantity proceeds to 

the evaluation of Tier D, area (Ref. 1, Section 2.4.2.1.3, p. 65).

Volume Assigned Value: 0 

2.4.2.1.4. Area (Tier D)

The horizontal extent of Source No. 2 and the continuation of contamination between sample 

points have not been sufficiently determined; therefore, the source area is unknown, but 

greater than 0 (Ref. 1, Section 2.4.2.1.4, p. 65).

Area Assigned Value: Unknown, but > 0

2.4.2.1.5. Source Hazardous Waste Quantity Value

Area of contaminated soil source: >0 

Highest assigned value assigned from Ref. 1, Table 2-5: > 0

Source Hazardous Waste Quantity Value: >0 (Ref. 1, Section 2.4.2.1.5, p. 65).
42

SUMMARY OF SOURCE DESCRIPTIONS

Source 

No.

Source 

Haz.

Waste 

Quantity

Value 

Source 

Hazardous 

Constituent 

Quantity 

Complete? 

(Y/N)

Containment Factor Value by Pathway

Ground 

Water (GW)

(Ref. 1, 

Table 3-2)

Surface Water (SW) Air

Overland/flood

(Ref. 1,

Table 4-2)

GW to SW

(Ref. 1,

Table 3-2)

Gas

(Ref. 1,

Table 6-3)

Particulate 

(Ref. 1,

Table 6-9)

1 > 0 N 10 NS* NS* NS* NS*

2 > 0 N 10 NS* NS* NS* NS*

*NS (Not Scored)

 

Other Possible Sources

No other possible sources have been identified at the site.
43

3.0 GROUND WATER MIGRATION PATHWAY

3.0.1 General Considerations

Ground Water Migration Pathway Description

Regional Geology/Aquifer Description:

Subsurface materials beneath the site, the Speedway wellfield, and the Riverside wellfield are 

part of one continuous sand and gravel outwash plain that extends across the White River and 

lower Eagle Creek stream valleys (Ref. 120, pp. 6, 8, 9). In the area of interest and the 

Speedway wellfield, sediments consist of variable thicknesses of outwash overlying complexly 

interbedded sand and gravel and till. Thick unbroken sections of sand and gravel are present 

locally (Ref. 120, p. 11). Sediments in the Riverside wellfield consist of thick sections of sand 

and gravel interstratified with a few, small, widely scattered till units (Ref. 120, p. 11). 

Regionally, the New Albany Shale underlies the sand and gravel outwash and Muskatatuck 

(limestone) group underlies the shale (Refs. 120; 130). However, the New Albany Shale is not 

present throughout the entire region and where the shale is absent, unconsolidated sand and 

gravel materials sit directly on the carbonate Muskatatuck group (Fig 1-5: Ref 120, p. 10; 116, 

pp. 51-55). The aquifer is unconfined and the recharge rate is high (Ref. 120, pp. 12-13).

The 4-mile Target Distance Limit (TDL) has been established from the sources at this site as 

shown in Figure 1-5.

Local Geology/Aquifer Description:

The ground water system in the area of the West Vermont Drinking Water site consists of two 

hydraulically interconnected aquifer layers/strata. These aquifers are described below.

- Aquifer/Stratum 1 (uppermost): Sand and Gravel Outwash Overburden

Description

Surficial soils near the residential wells and potential sources consist of Urban Land-Genesee 

complex along the north bank of Little Eagle Creek and in a small area near west Vermont St 

in the southwest corner of the area of interest. Genesee soil consists of very deep, well 

drained soils that formed in flood plains along the White River and larger creeks. Urban LandFox complex is present through the remainder of the area of interest and in most of the land 

between the two creeks. Fox complex soil consists of well drained soils overlying sand and 

gravelly sand. (Ref. 125)

Boring logs in the project area show that unconsolidated sediments consist primarily of sand, 

with interbedded fine-grained units between 30 and 80 feet bgs (Refs. 40, pp. 885-1113; 131; 

132; 133, pp. 446-571). Nearby locations, notably wells MMW-20LA, MMW-21LA, MMW-P22LA (Ref. 122, pp. 91-96, 98-101, 105-109), MW-WES-01C (Ref. 131, p 1), and MW-WES6D (Ref. 132, p. 1) show vinyl chloride contamination migrating below the fine-grained 

sediments down to a depth of 70 feet (Refs. 122, pp. 46-72; 131; 132; Table 7; Table 8). This 

migration of a non-naturally occurring contaminant (vinyl chloride) through the fine-grained 
44

sediments, and subsequent presence of contamination throughout the aquifer to a depth of at 

least 70 feet, demonstrates that the interbedded fine-grained units do not act as a local barrier 

to ground water flow and the sand and gravel aquifer is one hydraulic unit.

- Aquifer/Stratum 2 (deepest): Limestone Bedrock

Description

The Muskatatuck group consists of crystalline limestone and lesser calcareous shales (Ref.

120, p. 10). Prior to glaciation, the top of the bedrock surface was exposed to weathering and 

underwent karst development (Ref. 130, p. 15). Within the Riverside wellfield, the outwash 

aquifer is directly on the bedrock, (Ref. 129, p. 23), which is relict karst, therefore, “the 

limestone aquifer is hydraulically connected to the outwash sand and gravel aquifer” (Ref. 129, 

p. 27). The “...carbonate rocks lying...immediately beneath the outwash have undergone 

extensive solution-channel development...” (Ref. 127, p. 3). Possible solution cavities and/or 

voids were identified in the test piezometers cored near RS-29 (Ref. 128, pp. 6, 12, 18-20).

Aquifer Interconnections/Distance from Source

Description

Subsurface materials beneath the project area, the Speedway wellfield, and the Riverside 

wellfield are part of one continuous sand and gravel outwash plain that extends across the 

White River and lower Eagle Creek stream valleys (Ref. 120, pp. 6, 8, 9). The thickness and 

extent of the finer grained material in the project area are insufficient to form a barrier to 

vertical contaminant migration. The finer grained unit from 35-50 ft bgs is not present in parts 

of the project area (Ref. 16; 40, pp. 955-963, 986-997; 133, pp. 557 and 559). Additionally, the 

migration of a non-naturally occurring contaminant (vinyl chloride) through the fine-grained 

sediments, and subsequent presence of contamination throughout the aquifer to a depth of at 

least 70 feet bgs demonstrates that the interbedded fine-grained units do not act as a local 

barrier to ground water flow.

Shale bedrock of the New Albany Formation (Ref. 120, p. 10) is present in the project area 

between 70-80 feet bgs (Refs. 122, pp. 108, 113, 117; 131). However, the New Albany Shale 

is not present throughout the study area and is specifically not present within 2 miles east of 

the study area where unconsolidated materials (the sand and gravel outwash overburden) sit 

directly on the carbonate Muskatatuck group (Fig 1-5; Refs. 120, p. 10; 116, pp. 51-55). Within 

the Riverside wellfield, the outwash aquifer is directly on the bedrock, (Ref. 129, p. 23), which 

is relict karst. The materials in the aquifers have hydraulic conductivities that are within two 

orders of magnitude of one another; therefore, “the limestone aquifer is hydraulically 

connected to the outwash sand and gravel aquifer” (Ref 1, pp, 51601; 129, p. 27). 

Additional Site Geology/Aquifer Description: 

The sand and gravel outwash overburden extends throughout the 4-mile TDL, but specifically 

eastward in to the White River valley to the Riverside wells (Ref. 120, pp. 6, 8, 9). There are no 

aquifer boundaries such as faults or mountain ranges between the project area and the 

Speedway or Riverside wellfields (Ref 3).
45

In 2013, Mundell performed slug tests on seven wells near the residential wells. The hydraulic 

conductivity averaged 70.9 feet per day with a maximum of 141 feet per day (Ref. 121, p. 3).

In the project area, shale bedrock of the New Albany Formation (Ref 120, p. 10) is present 

between 70-80 feet bgs (Refs. 122, pp 108, 113, 117; 131). The New Albany Formation is 

between 85-150 feet thick in the White River basin and has low water yield (Ref 130, pp 6 and 

11). In the Speedway wellfield it is not a major ground water producing unit and is considered 

an aquitard (Ref. 123, p. 10). The New Albany Shale is not present less than 2 miles east of 

the study area and unconsolidated materials sit directly on the carbonate Muskatatuck group 

(Fig 1-5: Refs. 120, p. 10; 116, pp 51-55).

Ground water in the project area is encountered between 14 and 18 feet bgs in monitoring 

wells (Refs. 119, pp 2-39; 122, pp. 44-45). Ground water is unconfined, as evidenced by 

similar hydraulic heads in shallow and deep wells (Refs. 119, pp. 2-39; 122, pp. 7-45). Little 

Eagle Creek does not form a hydraulic barrier, as evidenced by contamination sourced north of 

the creek which underflows the stream (Ref. 119, pp. 57-61). 

The ground water flow direction in the project area is generally towards the south with some 

components of flow to the southeast and southwest (Refs. 119, pp. 63-66; 122 pgs 2-5; 38, 

pp. 51-52). Regional ground water flow near the Speedway wellfield southeast from the Eagle 

Creek valley towards the White River valley (Ref 123, p. 12). 

The stream channel of Big Eagle Creek within the lower valley has been rerouted over time. 

Review of historic aerial photographs from 1972, 1962, 1956, and 1941 (Ref. 124, pp. 2, 3, 4, 

5, 6) shows that Big Eagle Creek steam channel south of Vermont St, was originally much 

closer to what is now the intersection of Holt Road and Cossell Ave. The original stream 

channel implies that natural flow can be to the southwest as well as southeast. (Ref. 15, p. 1)

Aquifer Discontinuities within Target Distance Limit

There are no known aquifer boundaries or discontinuities present within 4 miles of the project 

area and the Riverside, White River, and Speedway wellfields that completely transects an 

aquifer in the 4-mile TDL (Refs. 3; 120, pp 6, 8-9). The Speedway, and Riverside wellfields are 

located between 1 to 3 miles from the source areas (Figure 1-5). The White River wellfield is 

located 2 to 4 miles from the source areas (Figure 1-5). The New Albany Shale is not present 

less than 2 miles east of the study area, and Little Eagle Creek does not form a hydraulic 

barrier, as evidenced by contamination sourced north of the creek which underflows the 

stream (Ref. 119, pp. 57-61).
46

SUMMARY OF AQUIFER(S) BEING EVALUATED

Aquifer 

No. Aquifer Name

Is Aquifer 

Interconnected with 

Upper Aquifer within 

2 miles? (Y/N/NA)

Is Aquifer 

Continuous 

within 4-mile 

TDL? (Y/N)

Is Aquifer 

Karst? (Y/N)

1 Sand and Gravel 

Outwash Overburden NA Y N

2 Limestone Bedrock Y Y Y*

*Karst topography has not been confirmed to be underlying the source and continuing out to the target wells being evaluated 

at this time; therefore, the aquifer is not scored as karst for HRS purposes.

The unconsolidated (Sand and Gravel Outwash Overburden) and bedrock aquifers are 

interconnected (Ref. 107, p. 2). The aquifer is continuous in within the 4-mile radius (Ref. 107, 

pp. 1-3).

3.1 LIKELIHOOD OF RELEASE

3.1.1 Observed Release

Aquifer Being Evaluated: The interconnected unconsolidated and bedrock aquifers

Establishing an observed release by chemical analysis requires analytical evidence of a 

hazardous substance in the media significantly above background level (Ref. 1, Section 2.3, p. 

63). If the background concentration is not detected (or is less than the detection limit), an 

observed release is established when the sample measurement equals or exceeds its own 

Sample Quantitation Limit (SQL) and that of the background sample. If the SQL cannot be 

established, the U.S. EPA Contract-Required Quantitation Limit (CRQL) is used in place of the 

SQL (Ref. 1, Table 2-3, p. 63). 

Chemical Analysis

On October 17, 21 through 31, November 26, 2014, and February 6, 2015, U.S. EPA 

Contractor staff collected ground water samples for the West Vermont Contaminated Drinking 

Water (Refs. 43, pp.1-17; 45, pp. 1, 2; 54, pp. 1-17; 77, pp. 1-6; 87, pp.1, 2; 93, pp. 1-2589, pp. 

92-95; 90, pp.35, 36; 91, p. 23; 92, pp. 90, 91; 94, pp. 31, 201; Tables 4, 5, 6 of this HRS 

Documentation Record). The ground water samples were analyzed for the trace volatile list of 

compounds. All samples were analyzed according to CLP SOW SOM01.2 (10/2006) and 

reviewed according to the NFG for SOM01.2 and the SOP for ESAT 5/TechLaw Validation of 

Contract Laboratory Program Organic Data (Version 2.7) (Refs. 89, p. 2; 90, p. 2; 91, p. 2; 92, 

p. 2; 94, p. 2).
47

- Background Concentrations:

EPA contractor staff obtained background ground water samples from monitoring wells and 

one residential private well. Table 4 below on the following pages depicts the background 

ground water samples, hazardous substances concentrations, and other associated sample 

information.

Table 4

Background Ground Water Sample 

(Obtained from established monitoring wells and one private residential well)

EPA

CLP#

EPA

ID

Date Location

Type of 

Ground 

Water 

Sample

Depth 

Below 

Ground 

Surface

Hazardous 

Substance**

Hazardous 

Substance 

Concentration 

(Adjusted 

Concentration)

μg/L

ContractRequired 

Quantitati

on Limit 

(CRQL)

μg/L

Reference

E5AZ2 BUJ0068 11/26/14 MW-WVs10

Monitoring 

Well 45 Feet

VC

Trans-1,2-

DCE

Cis-1,2-DCE

TCE

1,1-DCA

ND

ND

ND

0.37 * (ND)

ND

0.5

0.5

0.5

0.5

0.5

Refs. 76, 

pp. 7, 8; 

77, pp. 1, 

94, pp. 6, 

7, 31, 46-

48, 201; 

101, p. 2

E5AZ3 BUJ0069 11/26/14

MW-WVS11Monitoring 

Well 53 Feet

VC

Trans-1,2-

DCE

Cis-1,2-DCE

TCE

1,1-DCA

ND

ND

ND

ND

ND

0.5

0.5

0.5

0.5

0.5

Refs. 76, 

pp. 7, 8, 9; 

94, pp. 8,9, 

31, 64-66, 

201; 101, 

pp. 3, 4

E5AS5

WVRES4020co

s 

10/17/2014 4020 

Cossell

Residentia

l Well

VC

Trans-1,2-

DCE

Cis-1,2-DCE

TCE

1,1-DCA

ND

ND

ND

ND

ND

0.5

0.5

0.5

0.5

0.5

Ref. 54, pp. 

2, 3; 89, 

pp. 17, 92, 

147, 148, 

149; 103, 

pp, 1, 2

E5BH3 MW 10 02/06/15

Olin 

Park/WVS10

Monitoring 

Well 50 Feet

VC

Trans-1,2-

DCE

Cis-1,2-DCE

TCE

1,1-DCA

ND

ND

0.12* (ND)

ND

ND

0.5

0.5

0.5

0.5

0.5

Refs. 60, p. 

1; 67, pp. 

1-6; 113, ;

pp. 9-10,

37, 57-59
48

EPA

CLP#

EPA

ID

Date Location

Type of 

Ground 

Water 

Sample

Depth 

Below 

Ground 

Surface

Hazardous 

Substance**

Hazardous 

Substance 

Concentration 

(Adjusted 

Concentration)

μg/L

ContractRequired 

Quantitati

on Limit 

(CRQL)

μg/L

Reference

E5BH4 MW 10 02/06/15

Olin 

Park/WVS10

Monitoring 

Well 50 Feet

VC

Trans-1,2-

DCE

Cis-1,2-DCE

TCE

1,1-DCA

ND

ND

0.11 * (ND)

ND

ND

0.5

0.5

0.5

0.5

0.5

Refs. 60, p. 

1; 67, pp. 

1-6; 113,

pp. 17-18,

37, 67-69

E5BH7 MW 11 02/06/15

Olin 

Park/WVS11

Monitoring 

Well 55 Feet

VC

Trans-1,2-

DCE

Cis-1,2-DCE

TCE

1,1-DCA

ND

ND

ND

ND

ND

0.5

0.5

0.5

0.5

0.5

Refs. 60, p. 

2; 67, pp. 

1-6; 113,

pp. 25-26,

37, 79-81

E5AW8

WVMW-4BGW

10/29/14

Existing 

USEPA 

monitoring 

well 

MWWES04b, north 

side of 

residential 

area

Monitoring 

Well

39-44

feet

VC

Trans-1,2-

DCE

Cis-1,2-DCE

TCE

1,1-DCA

ND

ND

ND

ND

ND

0.5

0.5

0.5

0.5

0.5

Refs. 38, p. 

426; 85, p. 

27; 92, pp. 

15-16, 90,

118-120;

114, p.2

E5AW9 WVMW-4A 10/29/14

Existing 

USEPA 

monitoring 

well 

MWWES04a, north 

side of 

residential 

area

Monitoring 

Well

25-30

feet

VC

Trans-1,2-

DCE

Cis-1,2-DCE

TCE

1,1-DCA

ND

ND

ND

ND

ND

0.5

0.5

0.5

0.5

0.5

Ref. 38, p. 

426; 85, p. 

27; 92: 

Pg. 17-18, 

90, 121-

123
49

EPA

CLP#

EPA

ID

Date Location

Type of 

Ground 

Water 

Sample

Depth 

Below 

Ground 

Surface

Hazardous 

Substance**

Hazardous 

Substance 

Concentration 

(Adjusted 

Concentration)

μg/L

ContractRequired 

Quantitati

on Limit 

(CRQL)

μg/L

Reference

E5AW6 WVMW-10 10/21/14

Existing 

Allison 

Transmissi

on 

monitoring

well MW1003-S3, 

north of 

NW corner 

of

residential 

area

Monitoring 

Well

55 feet

VC

Trans-1,2-

DCE

Cis-1,2-DCE

TCE

1,1-DCA

ND

ND

ND

ND

ND

0.5

0.5

0.5

0.5

0.5

Refs. 23, p. 

95; 85, p. 

28; 90, pp. 

18-19, 36,

67-69; 111,

p. 2

E5AW5

WVMW-11-

GW

10/24/14

Existing 

Allison 

Transmissi

on 

monitoring

well MW1105-S3/4, 

north of 

residential

area

Monitoring 

Well

VC

Trans-1,2-

DCE

Cis-1,2-DCE

TCE

1,1-DCA

ND

ND

ND

ND

ND

0.5

0.5

0.5

0.5

0.5

Refs. 85, p. 

28; 89, pp. 

71-72, 95,

228-230;

108, p. 3;

111, pp. 3,

4 

E5AW0

WVMW-12-

GW

10/23/14

Existing 

Genuine 

Parts 

monitoring 

well

MW-135

Monitoring 

Well

10-20

feet

VC

Trans-1,2-

DCE

Cis-1,2-DCE

TCE

1,1-DCA

ND

ND

ND

ND

ND

0.5

0.5

0.5

0.5

0.5

Refs. 36, p. 

97; 85, p. 

28; 89, pp. 

55-56, 94,

204-206

E5AT9

WVMW-13-

GW

10/23/14

Existing 

Genuine 

Parts 

monitoring 

well MW154

Monitoring 

Well 5-20 feet

VC

Trans-1,2-

DCE

Cis-1,2-DCE

TCE

1,1-DCA

ND

ND

ND

ND

ND

0.5

0.5

0.5

0.5

0.5

Refs. 36, p. 

101; 85, p. 

28; 89: pp. 

53-54, 94,

201-203

ND* = Not Detected

*- Samples have analyte concentrations below the quantitation limit (CRQL) and detected compounds 

are qualified as J values. Detection below the CRQL is treated as non-quantifiable for HRS purposes. 

Result was adjusted to “Non-Detect” (ND) using the procedure described in EPA 540-F-94-028, Using 

Qualified Data to Document an Observed Release and Observed Contamination, November 1996

ND = Concentrations of analyte was at or below the CRQL and received a “U” qualifier, or adjusted 

concentrations of analyte was below the CRQL.

- Contaminated Ground Water Samples:

In 2014, U.S.EPA’s START Contractor conducted sampling activities at the West Vermont 
50

Drinking Water Contamination and surrounding areas (Refs. 43, pp.1-17; 45, pp. 1, 2; 54, pp. 

1-17; 77, pp. 1-6; 87, pp.1, 2; 93, pp. 1-25; 89, pp. 92-95; 90, pp. 35, 36; 91, p. 23; 92, pp. 90,

91; 94, p. 31, 201; Tables 5 and 6 of this HRS Documentation Record). The ground waters

obtained from monitoring wells and residential wells were found to be contaminated with

chlorinated VOCs (Ref. Sections 3.1.1 and 3.3.2.2 of this HRS documentation record).

The extent of the ground water plume is depicted by samples from monitoring wells and 

residential wells meeting observed release criteria (Figure 1-2). The extent of this plume has 

not been completely delineated at this time but has been characterized by data from 

monitoring wells and residential wells (Ref. Section 3.1.1 of this HRS documentation record

and Figure 1-2 of this HRS documentation record).

The plume currently measures approximately 20.2 acres (Fig. 1-2). The area of the ground 

water plume is based on available samples that meet the criteria for an observed release 

(Section 3.1.1 of this Documentation Record). The plume boundary was digitized by 

connecting wells that met observed release criteria (Figure 1-2 of this HRS documentation 

record). Background wells were identified outside the boundaries of the plume (Section 3.1.1 

of this HRS documentation record; Figure 1-2 of the HRS documentation record). 

Table 5 and Table 6 below depict the samples that meet the observed release criteria (Ref. 1, 

Table 2-3, p. 63). These tables list the organic hazardous substances with their concentrations 

and CRQLs for each sample. These samples qualify as “observed releases” based on the 

criteria in the HRS (Ref. 1, Section 2.3, Table 2-3, p. 63). The well locations are depicted on 

Figure 1-2 of this HRS documentation record. 

Table 5

Contaminated Ground Water Collected by EPA from Monitoring Wells Establishing an 

Observed Release 

Utilizing CLP Laboratory

EPA 

CLP#

EPA

Location Date Location

Screened 

Depth 

Below 

Ground 

Surface

Hazardous 

Substance

Hazardous 

Substance 

Concentration 

(Adjusted 

Concentration) 

μg/L

ContractRequired 

Quantitation 

Limit 

(CRQL)

μg/L

Reference

E5AS9 WVMW-3A 10/21/14 MW-3A 30-35 feet VC 1.7 0.5

Refs. 7, p. 3; 

38, p. 78; 54, 

p. 6; 76, pp. 5,

6; 85, p. 27; 

89, pp. 25, 26, 

93, 159-161; 

93, p. 8
51

EPA 

CLP#

EPA

Location Date Location

Screened 

Depth 

Below 

Ground 

Surface

Hazardous 

Substance

Hazardous 

Substance 

Concentration 

(Adjusted 

Concentration) 

μg/L

ContractRequired 

Quantitation 

Limit 

(CRQL)

μg/L

Reference

E5AT0 WVMW-7A 10/21/14

Existing 

USEPA 

monitoring 

well MWWES07,

43-48 feet VC 18 0.5

Refs. 54, p. 7; 

76, p. 5, 6; 84, 

p. 9; ; 85, p.

27; 89, pp. 29,

30, 93, 165-

167; 93, p. 19

E5AT3 WVMW-5C 10/22/14 MW-5C 45-50 feet VC 13 0.5

Refs. 5, p. 5; 

38, p. 78; 76, 

p. 5; 85, p.

27; 89, pp. 35, 

36, 93, 174-

176; 93, p. 16

E5AT5

DL

WVMW-6A 10/23/14 MWWES06S 25-30 feet VC 41 2.5

Refs. 54, p. 

10; 76, pp. 5, 

6; 84, pp. 5, 6; 

85, p. 27; 89, 

pp. 37, 38, 93, 

177-179; 93,

p. 17

E5AT6 WVMW-6B 10/23/14 MWWES06D

44-48 feet VC 67 5.0

Refs. 54, pp. 

10; 76, pp. 5, 

6; 84, p. 6; 

85, p. 27; 89, 

pp. 41, 42, 93, 

183-185; 93,

p. 18

E5AT7 WVMW-9A 10/23/14

MWWES09S 25-30 feet Cis-1,2-DCE 4.8 0.5

Refs. 54, p. 

10, 11; 76, pp. 

5, 6; 84, p. 16; 

85, p. 27; 89, 

pp. 45, 46, 93, 

189-191; 93,

p. 22

E5AT7

DL

WVMW-9A 10/23/14 MWWES09S

25-30 feet VC 170 10

Refs. 54, p. 

10; 76, pp. 5, 

6; 84, p. 16; 

89, pp. 47, 48, 

93, 192-194; 

93, p. 22

E5AT8

DL

WVMW-9B 10/23/14 MWWES09D

41-46 feet VC 37 2.5

Refs. 76, pp. 

5, 6; 84, p. 

15; 85, p. 27; 

89, pp. 50, 51, 

94, 195-197; 

93, p. 23

E5AW1 WVMW-16

10/23/14

Existing 

Genuine Parts 

monitoring 

well

MMW-166D

44-51 feet

Trans-1,2-

DCE

Cis-1,2-DCE

8.8

57

2.5

2.5

Refs. 54, p. 

11; 76, pp. 5, 

6 , 7; 85, p. 

28; 89, pp. 57, 

58, 94, 207-

209; 100, p. 

1211
52

EPA 

CLP#

EPA

Location Date Location

Screened 

Depth 

Below 

Ground 

Surface

Hazardous 

Substance

Hazardous 

Substance 

Concentration 

(Adjusted 

Concentration) 

μg/L

ContractRequired 

Quantitation 

Limit 

(CRQL)

μg/L

Reference

E5AW1

DL

WVMW-16 10/23/14

Existing 

Genuine Parts 

monitoring 

well

MMW-166D

44-51 feet TCE 670 25

Refs. 54, p. 

11; 76, p. 5; 

85, p. 28; 89, 

pp. 59, 60, 94, 

210-212; 100,

p. 1211

E5AW2 WVMW-17 10/23/14

Existing 

Genuine Parts 

monitoring 

well

MMW-148R

10.5-25.5 

feet

1,1-DCA

Trans-1,2-

DCE

1.4

6.4

0.5

0.5

Refs. 54, p. 

11; 76, p. 5; 

85, p. 28; 89, 

pp. 61, 62, 94, 

213-215; 100,

p. 1177

E5AW2

DL

WVMW-17 10/23/14

Existing 

Genuine Parts 

monitoring 

well

MMW-148R

10.5-25.5 

feet

Cis-1,2-DCE

TCE

29

100

5.0

5.0

Refs. 54, p. 

12; 76, p. 5; 

85, p. 28; 89, 

pp. 63, 64, 94, 

216 - 218; 

100, p. 1177

E5AW3 WVMW-8A 10/24/14

Existing 

USEPA 

monitoring 

well MWWES08S

27-32 feet VC 19 J- (19) 2.5

Ref 54, p. 12; 

76, p. 5, 6, 7; 

85, p. 27; 89, 

pp. 65, 66, 95, 

219 - 221

E5AW3

DL

WVMW-8A 10/24/14

Existing 

USEPA 

monitoring 

well MWWES08S

27-32 feet Cis-1,2-DCE 290 J- (290) 25

Refs. 54, p. 

12; 76, p. 5, 

6, 7; 84, p. 12; 

85, p. 27; 89, 

pp. 67, 68, 95, 

222 - 224; 93, 

p. 20

E5AW4 WVMW-8B 10/24/14

Existing 

USEPA 

monitoring 

well MWWES08D,

45-50 feet VC

Cis-1,2-DCE

1.4 J- (1.4)

17 J- (17)

0.5

0.5

Refs. 54, p. 

12; 76, p. 5, 6, 

7; 84, p. 11; 

85, p. 27; 89, 

pp. 69, 70, 95, 

225-227; 93,

p. 21

E5AT4 WVMW-6A 10/23/14

Existing 

USEPA 

monitoring 

well MWWES06S

44-48 VC 47 J+ (4.7) 0.5

Refs. 54, p. 

10; 76, p. 4, 

5; 84, p. 5, 6; 

85, p. 27; 91, 

pp. 8, 9, 23, 

47-49
53

EPA 

CLP#

EPA

Location Date Location

Screened 

Depth 

Below 

Ground 

Surface

Hazardous 

Substance

Hazardous 

Substance 

Concentration 

(Adjusted 

Concentration) 

μg/L

ContractRequired 

Quantitation 

Limit 

(CRQL)

μg/L

Reference

E5AS8

RE

WVMW-3B 10/21/14 MW-3B 40-45 feet VC 8.0 0.5

Refs. 38, p. 

420; 54, p. 6; 

76, p. 4, 5; 85, 

p. 27; 90, pp.

16, 17, 35, 64-

66; 93, p. 9,

10

E5AX0 WVMW-2A 10/29/14 MW-2A 23-30 feet

Trans-1,2-

DCE

Cis-1,2-DCE

2.4

18

0.5

0.5

Refs. 38, p. 

422; 54, p. 15; 

76, p. 2; 85, p. 

27; 92, pp. 19, 

20, 90, 124-

126; 93, p. 4

E5AX1 WVMW-15 10/29/14

Existing 

Michigan 

Plaza 

monitoring 

well

MMW-P-06

18-28 feet Trans-1,2-

DCE 23J- (23) 5 

Refs. 19, pp. 

208, 988, 989; 

54, p. 15; 76, 

p. 2; 85, p. 28;

92, pp. 21,

22, 90, 127-

129

E5AX1

DL

WVMW-15 10/29/14

Existing 

Michigan 

Plaza 

monitoring 

well

MMW-P-06

18-28 feet

VC

Cis-1,2-DCE

3,500 J+ (350)

1,900 J+ (190)

50

50

Refs. 19, pp. 

208, 988, 989; 

54, p. 15; 76, 

p. 2; 85, p.

28; 92, pp. 23, 

24, 90, 130-

132

E5AX2 WVMW-14 10/29/14

Existing 

Michigan 

Plaza

monitoring 

well MMW-P10D,

28-38 feet Trans-1,2-

DCE 1.3 0.5

Refs. 19, p. 

211; 54, p. 15; 

76, p. 2; 92, 

pp. 25-26, 90, 

133-135

E5AX2

DL

WVMW-14 10/29/14

Existing 

Michigan 

Plaza

monitoring 

well MMW-P10D,

28-38 feet

VC

Cis-1,2-DCE

810 J+ (81)

69

25

25

Refs. 19, p. 

211; 54, p. 15; 

76, p. 2; 85, p. 

28; 92, pp. 27, 

28, 90, 136-

138

E5AX3 WVMW-2B 10/30/14

Existing 

USEPA 

monitoring 

well MWWES02b,

35-40 feet Trans-1,2-

DCE 0.90 0.5

Refs. 38. p. 

78; 54, p. 16; 

85, p. 27; 92, 

pp. 29, 30, 90, 

139-141; 93,

p. 5
54

EPA 

CLP#

EPA

Location Date Location

Screened 

Depth 

Below 

Ground 

Surface

Hazardous 

Substance

Hazardous 

Substance 

Concentration 

(Adjusted 

Concentration) 

μg/L

ContractRequired 

Quantitation 

Limit 

(CRQL)

μg/L

Reference

E5AX3

DL

WVMW-2B 10/30/14

Existing 

USEPA 

monitoring 

well MWWES02b,

35-40 feet VC

Cis-1,2-DCE

8.2 J+ (0.82)

16

0.5

0.5

Refs. 38, p. 

422; 54, p. 16; 

76, p. 2; 85, p. 

27; 92: Pg. 31-

32, 90, 142-

144

E5AX4

WVMW2B-Dup

10/30/14

Existing 

USEPA 

monitoring 

well MWWES02b,

35-40 feet

VC

Trans-1,2-

DCE

Cis-1,2-DCE

7.3

0.85

13

0.5

0.5

0.5

Refs. 38, p. 

423; 76, p. 2; 

85, p. 27; 92, 

pp. 33, 34, 90, 

145-147

E5AX5 WVMW-2C 10/30/14 MW-2C 45-50 feet

VC

Cis-1,2-DCE

5.4

0.83

0.5

0.83

Refs. 38, p. 

423; 54, p. 

16; 76, p. 2; 

85, p. 27; 92, 

pp. 35, 36, 90, 

148-150; 93,

pp. 6, 7

E5AY2

DL

WVMW-1B 10/30/14 MW-1B 41-46 feet VC 32J+(3.2) 2.5

Refs. 38, p. 

421;54, p. 17; 

76, p. 2, 3; 85, 

p. 27; 92, pp.

43, 44, 91,

160-162; 93,

p. 2

E5AY3

DL

WVMW-1B 

Dup

10/30/14 MW-1B 41-46 feet VC 30J+ (3.0) 2.5

Refs. 38, p. 

421; 54, p. 17; 

76, p. 2, 3; 85, 

p. 27; 92, pp.

51, 52, 91,

170-172; 93,

p. 2

E5AY4 WVMW-1C 10/30/14 MW-1C 50-55 feet VC 12J+ (1.2) 0.5

Refs. 38, p. 

421; 76, p. 2; 

85, p. 27; 92, 

pp. 53, 54, 91, 

173-175; 93,

p. 3,

For SDG E5AS4 (Reference 76, pp 5-6)

J- - Samples E5AS4, E5AS6RE, E5AS7, E5AW3DL, and E5AW4 were analyzed outside the holding

time and result is estimated with a low bias. Results for release samples require no adjustment

according to procedures described in EPA 540-F-94-028, Using Qualified Data to Document an

Observed Release and Observed Contamination, November 1996.

J+- Surrogate recoveries out of control, low in sample E5AS6RE and associated compounds are 

qualified bias low. Results required no adjustment according to procedures described in EPA 540-F-
55

94-028, Using Qualified Data to Document an Observed Release and Observed Contamination, 

November 1996. 

RE- Results from rerun of sample E5AS6

DL – Concentrations exceeded the instrument’s calibration range. Samples were reanalyzed using 

dilution factor and the results and CRQL are reported from diluted analysis.

For SDG E5AT4 (Reference 76, p4)

J+ – Vinyl Chloride exceeded calibration range and sample was not reanalyzed. Result is estimated 

with an unknown bias and adjusted according to described in EPA 540-F-94-028, Using Qualified Data 

to Document an Observed Release and Observed Contamination, November 1996. 

For SDG E5AS8 (Reference 76, p4)

RE – Results from rerun of sample E5AS8

For SDG E5AW8 (Reference 76, pp 2-3)

J+- Sample E5AY4 vinyl chloride was analyzed after a sample with a compound exceeding the 

calibration range and no intervening instrument blank. Detections of these compounds are estimated 

with unknown bias (as they may be results of or supplemented by carryover) and adjusted according to 

procedures described in EPA 540-F-94-028, Using Qualified Data to Document an Observed Release 

and Observed Contamination, November 1996. 

J- - Sample E5AX1 was analyzed outside the holding time and results are estimated with a low bias. 

Results for release samples require no adjustment according to procedures described in EPA 540-F94-028, Using Qualified Data to Document an Observed Release and Observed Contamination, 

November 1996. 

J+- Surrogate recoveries were out of control, high in samples E5AX1, E5AX2DL, E5AX3RE, E5AY2DL, 

E5AY3DL, and E5AZ1DL and associated compounds are qualified bias high. Results were adjusted 

according to procedures described in EPA 540-F-94-028, Using Qualified Data to Document an 

Observed Release and Observed Contamination, November 1996. 

RE- Results from rerun of sample E5AX3

DL - Concentrations exceeded the instrument’s calibration range. Samples were reanalyzed using 

dilution factor and the results and CRQL are reported from diluted analysis.
56

Table 6

Contaminated Ground Water from Residential Wells Sample Table 

Results Obtained Using CLP Laboratory

SDG E5AS4

EPA 

CLP#

EPA 

Location

Date Location

Depth 

Below 

Ground 

Surface

(feet)

Hazardous 

Substance

Hazardous 

Substance 

Concentration 

(Adjusted 

Concentration)

μg /L

Contract 

Required 

Quantitation 

Limit 

(CRQL)

μg/L

Reference

E5AS4

WVRES4018WV

S 

10/17/14

4018 

West 

Vermont

75 Vinyl Chloride 4.9 J- (4.9) 0.5

Refs. 14, p. 

11; 54, p. 3; 

89, pp. 11,12, 

92, 140-142; 

102, p. 2

E5AS6R

E 

WVRES4012CO

S 

10/17/14 4012 

Cossell 62 Vinyl Chloride 1.4 J- (1.4) 0.5

Refs, 14, p. 8; 

54, p. 2; 89, 

pp. 21, 22, 92, 

153-156; 102,

p. 1; 103, pp.

1, 2

E5AS7

WVRES4012CO

S-DUP

10/17/14 4012 

Cossell 62 Vinyl Chloride 4.8 J- (4.8) 0.5

Refs 14, p. 8; 

54, p. 2; 89, 

pp. 23, 24, 92, 

156-158; 102,

p. 1; 103, pp.

1, 2

For SDG E5AS4 (Reference 76, p5)

J- - Sample was analyzed outside the holding time and result is estimated with a low bias. Results for

release samples require no adjustment according to Reference 76, page 13-14

RE- Results from rerun of sample E5AS6

Abbreviations: 

VC Vinyl Chloride

PCE Tetrachloroethene

Cis-1,2 DCE Cis - 1,2 Dichloroethene

Trans 1,2 DCE Trans 1,2 Dichloroethene

TCE Trichloroethene

Other Supporting Data

The following tables provide additional samples to support an observed release at the site and 

continuous contamination throughout the aquifer.
57

Table 7

Contaminated Residential Ground Water Collected By U.S. EPA

Lab ID

EPA 

Sample

ID.

Date Location

Screened 

Depth 

Below 

Ground 

Surface

Hazardous 

Substance

Hazardous 

Substance 

Concentration 

Reference

P10071

04-08

4012cos

ell-RW1-

070710

7/7/10 4012 Cossell 35 feet VC 13

Refs. 13, p. 

37; 14, p. 8; 

40, p. 416; 

104, p. 18 

P10071

04-09

4044WV

eermontRW2-

07071

7/7/10 4044 West 

Vermont 75 feet

CIS 1,2-DCE

PCE

VC

1.6 J

3 J

4.7 J

Refs.13, p. 38; 

40, p. 414; 

104, pp. 19, 

20

P10071

04-10

4140wve

rmontRW3-

07071

7/7/10 4140 West 

Vermont 36 feet PCE

VC

2.2 J

2.1 J

Refs. 13, p. 

38; 40, p. 551; 

104, p. 22

P10071

04-11

4018wve

rmontRW4-

07071

7/7/10 4018 West 

Vermont 75 feet PCE

VC

2.0 J

1.6 J

Refs. 13, p. 

39; 40, p. 559; 

104, p. 24

P10071

04-12

4018ver

montRWD070710

7/7/10 4018 West 

Vermont 75 feet PCE

VC

1.9 J

1.1 J

Refs.14, p. 11; 

40, p. 

559;104, p. 26

P10071

04-13

4042wve

rmontRW5-

070710

7/7/10 4042 West 

Vermont 75 feet PCE 1.7 J

Refs. 13, p. 

39; 40, p. 646; 

104, p. 28

P10071

04-14

4031cos

sellRW6-

070710

7/7/10 4031 Cossell PCE 1.5 J Ref. 13, p. 39; 

104, p. 30 

505591

6001

WVS4012CO

SSEL121211-

GW

12/12/11 4012COSSEL 35 feet VC 26.1

Refs.14, p. 8; 

40, p. 535; 

105, pp. 5, 27; 

51, p. 28

505591

6002

WVS4018WV

ERMON

T121211-

GW

12/12/11 4018 West 

VERMONT 75 feet VC 4.8

Refs.14, p. 11; 

105, pp. 7, 27; 

51, p. 28
58

Table 8 

Contaminated Ground Water Collected by EPA from Monitoring Wells Establishing an 

Observed Release from the Known Sources

Results Obtained Using Non-CLP Laboratory

Lab ID 

EPA 

Sample 

ID

Date Location

Depth 

Below 

Ground 

Surface

Hazardous 

Substance

Hazardous 

Substance 

Concentration 

(Adjusted 

Concentration)

μg/L

Reference

509144

3003

WVSMWWE

S-05B121613

-GW

12/16/2013

WVSMWWES-05B121613-GW

32.5-37.5 None 

Detected None Detected

Refs. 38, p. 

428; 66, pp. 1, 

2, 14-15

509144

3004

WVSMWWE

S-05C121613

-GW

12/16/2013 WVSMWWES-05C 50 None 

Detected None Detected

Refs. 38, p. 

429; 66, pp. 1, 

2, 16, 17

509144

3005

WVSMWWE

S-02A121713

-GW

12/17/2013 WVSMWWES-02A 29 feet

cis-1,2-

Dichloroethe

ne

12.7

Refs. 38, p. 

422; 66, pp. 2,

18

509144

3006

WVSMWWE

S-02B121713

-GW

12/17/2013 WVSMWWES02B 40 feet

cis-1,2-DCE

Vinyl 

Chloride

9.5

9.5

Refs. 38, p. 

422; 66, pp. 1, 

2, 20, 21

509144

3007

WVSMWWE

S-02C121713

-GW

12/17/2013 WVSMWWES-02C 50 feet None 

Detected None Detected

Ref. 38, p. 

423; 66, pp. 1, 

2, 22,23

509144

3008

WVSMWWE

S-01A121713

-GW

12/17/2013 WVSMWWES-01A 37.5 None 

Detected None Detected

Refs. 38, p. 

420; 66, pp. 1, 

2, 24,25

509144

3009

WVSMWWE

S-01B121713

-GW

12/17/2013 WVSMWWES-01B 46 feet Vinyl 

Chloride 52.3

Refs. 38, p. 

421; 66, pp. 1, 

2, 26, 27

509144

3010

WVSMWWE

S-01C121713

-GW

12/17/2013 WVSMWWES-01C 55 feet Vinyl 

Chloride 24.7

Refs. 38, p. 

421; 66, pp. 1, 

2, 28, 29
59

Lab ID

EPA 

Sample 

ID

Date Location

Depth 

Below 

Ground 

Surface

Hazardous 

Substance

Hazardous 

Substance 

Concentration 

(Adjusted 

Concentration)

μg/L

Reference

508400

9004

WVSMWWE

S-03B072313

-

GW 

07/23/13 Monitoring Well

3B 45 feet VC 9.4

Refs. 6, p. 4;

12, p. 6; 38, 

pp. 24, 424; 

55, p. 16; 56, 

p. 4

508658

5005

WVSMWWE

S-03B091013 

09/10/13 Monitoring Well

3B 40.05 feet VC 7.5

Refs. 12, p. 

10; 38, pp. 24, 

424; 58, p. 

17; 59, p. 4

508658

5010

WVSMWWE

S-02A091113 

09/11/13 Monitoring Well

2A 29.5 feet Cis-1,2-DCE 13.5

Refs. 8, p. 8;

12, p. 11; 38, 

pp. 24, 422; 

58, p. 26

508658

5011

WVSMWWE

S-02B091113 

09/11/13 Monitoring Well

2B 40 feet Cis-1,2-DCE

VC

5.4

6.8

Refs. 8,p. 9;

12, p. 11; 38, 

pp. 24, 422; 

58, pp. 28, 29

508658

5012

WVSMWWE

S-02C091113 

09/11/13 Monitoring Well

2C 45.33 feet VC 3.2

Refs. 8, p. 10; 

12, p. 11; 38, 

pp. 24, 422, 

423; 58, p. 

31; 68, p. 10

508658

5014

WVSMWWE

S-01B091113 

09/11/13 Monitoring Well 

1B 36 feet VC 43.4

Refs. 8, p. 12; 

12, p. 11; 38, 

pp. 24, 420, 

421; 58, p. 35

508658

5015

WVSMWWE

S-01C091113 

09/11/13 Monitoring Well

1C 54.35 feet VC 11.3

Refs. 8, p. 13; 

12, p. 12; 38, 

pp. 24, 420, 

421; 58, p. 37

509026

2006

WVSMWWE

S-03B111913

-

GW 

11/19/13 Monitoring Well

3B 45 feet VC 10.7

Refs. 10, p. 4; 

12, p. 20; 38, 

pp. 24, 424; 

63, p. 21; 68, 

p.4

509026

2010

WVSMWWE

S-02A112013

-

GW 

11/20/13 Monitoring Well

2A 29 feet Cis-1,2-DCE 11.8

Refs. 10, p. 8; 

12, p. 21; 38, 

pp. 24, 422;

63, p. 28; 68, 

p. 8

509026

2013

WVSMWWE

S-01C112013

-

GW 

11/20/13 Monitoring Well

1C 55 feet VC 18.1

Refs. 10, p. 

13; 12, p. 21; 

38, pp. 24, 

420, 421; 63, 

p. 35; 68, p. 

13
60

Lab ID

EPA 

Sample 

ID

Date Location

Depth 

Below 

Ground 

Surface

Hazardous 

Substance

Hazardous 

Substance 

Concentration 

(Adjusted 

Concentration)

μg/L

Reference

509026

2014

WVSMWWE

S-02B112013

-

GW

11/20/13 Monitoring Well

2B 40 feet Cis-1,2-DCE

VC

7.9

7.9

Ref. 10, p. 9; 

12, p. 21; 38, 

p. 422 63, pp. 

36, 37; 68, p. 

9

509026

2016

WVSMWWE

S-01B112013

-

GW

11/20/13 Monitoring Well

1B 46 feet VC 38.7

Refs. 10, p. 

12; 12, p. 21; 

38, pp. 24, 

420, 421; 63, 

40

508812

9002

WVSMWWE

SDUP1-

100913

-GW

10/09/13 Monitoring Well

3B 45 feet VC 20.2

Refs. 7, p. 4;

12, p. 13; 38, 

p. 424; 61, p. 

7; 62, p. 4

508812

9006

WVSMWWE

S-03B100813

-

GW

10/08/13 Monitoring Well

3B 45 feet VC 5.8

Refs. 9, p. 4; 

38, pp. 24, 

424; 61, p. 15; 

62, p. 4

508812

9010

WVSMWWE

S-02A100913

-

GW

10/09/13 Monitoring Well

2A 29 feet Cis-1,2-DCE 13.4

Refs 9, p.8; 

12, p. 13;. 38, 

pp. 24, 422;

61, p. 22; 62, 

p. 8

508812

9011

WVSMWWE

S-02B100913

-

GW

10/09/13 Monitoring Well

2B 40 feet Cis-1,2-DCE

VC

7.2

6.7

Refs. 9, p. 9;

12, p. 13; 38, 

pp. 24, 422; 

61, pp. 24, 25; 

62, p. 9

508812

9012

WVSMWWE

S-02C100913

-

GW

10/09/13 Monitoring Well

2C 50 feet VC 3.3

Refs. 9, -p. 10;

12, p. 13; 38, 

pp. 24, 422, 

423; 61, p. 

27; 62, p. 10

508812

9014

WVSMWWE

S-01B100913

-

GW

10/09/13 Monitoring Well

1B 46 feet VC 19.8

Refs. 9, p. 12;

12, p. 13; 38, 

pp. 24, 420, 

421; 61, p. 31; 

62 p. 12
61

Lab ID

EPA 

Sample 

ID

Date Location

Depth 

Below 

Ground 

Surface

Hazardous 

Substance

Hazardous 

Substance 

Concentration 

(Adjusted 

Concentration)

μg/L

Reference

508812

9015

WVSMWWE

S-01C100913

-

GW

10/09/13 Monitoring Well

1C 55 feet TCE

VC

7.4

13.5

Refs. 9, p. 13; 

12, p. 13; 38, 

pp. 24, 420, 

421; 61, p. 

32, 33; 62, p. 

13

509113

3005

WVSMWWE

S-03B121113

-

GW

12/11/13 Monitoring Well

3B 45 feet VC 5

Refs. 12, p. 

22; 38, pp. 

24, 424; 65, 

p. 18

509272

8005

WVSMWWE

S-03B012014

-

GW

01/20/14 Monitoring Well

3B 45 feet VC 10.9

Refs. 12, p. 

30; 38, pp. 

24, 424; 69, 

p. 19

509272

8009

WVSMWWE

S-02A012114

-

GW

01/21/14 Monitoring Well

2A 29 feet Cis-1,2-DCE 13.2

Refs. 12, p. 

30; 38, pp. 

24, 422; 69, p. 

26

509272

8010

WVSMWWE

S-02B012114

-

GW

01/21/14 Monitoring Well

2B 40 feet Cis-1,2-DCE

VC

9.5

7.5

Refs. 12, p. 

31; 38, pp. 24, 

422; 69,pp. 

28, 29

509277

6003

WVSMWWE

S-01B012514

-

GW

01/25/14 Monitoring Well

1B 46 feet VC 23.4

Refs. 12, p. 

34; 38, pp. 

24, 420, 421; 

70, p. 14

509277

6004

WVSMWWE

S-01C012514

-

GW

01/25/14 Monitoring Well

1C 55 feet VC 21

Refs. 12, p. 

34; 38, pp. 24, 

420, 421; 70, 

p. 16

509363

2002

WVSMWWE

S-03A021714

-

GW

02/17/14 Monitoring Well

3A 35 feet VC 2

Refs. 12, p. 

35; 38, pp. 24, 

424; 71, p. 14
62

Lab ID

EPA 

Sample 

ID

Date Location

Depth 

Below 

Ground 

Surface

Hazardous 

Substance

Hazardous 

Substance 

Concentration 

(Adjusted 

Concentration)

μg/L

Reference

509363

2003

WVSMWWE

S-03B021714

-

GW

02/17/14 Monitoring Well

3B 45 feet VC 11.4

Refs. 12, p. 

35; 38, pp. 

24, 424; 71, 

p.16

509363

2007

WVSMWWE

S-01C021814

-

GW

02/18/14 Monitoring Well

1C 55 feet VC 23.3

Refs. 12, p. 

35; 38, pp. 24, 

420, 421; 71, 

p. 24

509363

2008

WVSMWWE

S-01B021814

-

GW

02/18/14 Monitoring Well

1B 46 feet VC 33.3

Refs. 12, p. 

35; 38, pp. 24, 

420, 421; 71, 

p. 26

509363

2010

WVSMWWE

S-02A021914

-

GW

02/19/14 Monitoring Well

2A 29 feet Cis-1,2-DCE 18.1

Refs. 12, p. 

36; 38, pp. 24, 

422; 71, 29

509363

2011

WVSMWWE

S-02B021914

-

GW

02/19/14 Monitoring Well

2B 40 feet Cis-1,2-DCE

VC

10.2

6.2

Refs. 12, p. 

36; 38, pp. 24, 

422; 71, pp. 

31, 32

509363

2012

WVSMWWE

S-02C021914

-

GW

02/19/14 Monitoring Well

2C 50 feet VC 2.8

Refs. 12, p. 

36; 38, pp. 

24, 422, 423; 

71 p. 34

509363

2013

WVSMWWE

S-06D021914

-

GW

02/19/14 Monitoring Well

6D 49 feet VC 115

Refs. 12, p. 

37; 71, p. 36; 

84, pp. 4, 5

509363

2014

WVSMWWE

S-06S021914

-

GW

02/19/14 Monitoring Well

6S 30 feet VC 74.1

Ref. 12, p. 37; 

71, p. 38; 84, 

pp. 6, 7
63

Lab ID

EPA 

Sample 

ID

Date Location

Depth 

Below 

Ground 

Surface

Hazardous 

Substance

Hazardous 

Substance 

Concentration 

(Adjusted 

Concentration)

μg/L

Reference

509363

2015

WVSMWWE

S-09D021914

-

GW

02/19/14 Monitoring Well

9D 47 feet VC 46.4

Refs. 12, p. 

37; 71, p. 40; 

84, pp.14, 15

509363

2016

WVSMWWE

S-09S021914

-

GW

02/19/14 Monitoring Well

9S 31 feet Cis-1,2-DCE

VC

12.1

151

Refs. 12, p. 

37; 71, pp. 41, 

42; 84, pp.16, 

17

509363

2017

WVSMWWE

S-08D022014

-

GW

02/20/14 Monitoring Well

8D 51 feet Cis-1,2-DCE

VC

28.3

3.2

Refs. 12, p. 

38; 71,p p. 43, 

44; 84, pp. 10, 

11 

509363

2018

WVSMWWE

S-08S022014

-

GW

02/20/14

Monitoring Well

8S 34 feet Cis-1,2-DCE

VC

298

24.4

Refs. 12, p. 

38; 71, p. 45; 

84, pp. 12, 13

509363

2019

WVSMWWE

S-07D022014

-

GW

02/20/14 Monitoring Well

7D 70 VC 10

Refs. 12, p. 

38; 17, p. 6; 

71, p. 48; 84

509502

8005

WVSMWWE

S-03B031714

-

GW

03/17/14 Monitoring Well

3B 45 feet VC 9.1

Ref. 12, pp. 

38, 39; 38, p. 

424; 72, p. 15

509502

8016

WVSMWWE

S-02A031914

-

G

03/19/14 Monitoring Well

2A 29 feet Cis-1,2-DCE 17.8

Ref. 12, p. 

40; 38, pp. 

24, 422; 72, p. 

29

509502

8017

WVSMWWE

S-02B031914

-

GW

03/19/14 Monitoring Well

2B 40 feet Cis-1,2-DCE

VC

8.9

3.7

Ref. 12, p. 40; 

38, pp. 24, 

422; 72, pp. 

31, 32
64

Lab ID

EPA 

Sample 

ID

Date Location

Depth 

Below 

Ground 

Surface

Hazardous 

Substance

Hazardous 

Substance 

Concentration 

(Adjusted 

Concentration)

μg/L

Reference

509502

8018

WVSMWWE

S-02C031914

-

GW

03/19/14 Monitoring Well

2C 50 feet VC 2.7

Ref. 12, p. 40; 

38, pp. 24, 

422, 423; 72, 

p.34

509502

8020

WVSMWWE

S-01B031914

-

GW

03/19/14 Monitoring Well

1B 46 feet VC 23.2

Ref. 12, p. 40; 

38, pp. 24, 

420, 421; 72, 

p. 38

509502

8021

WVSMWWE

S-01C031914

-

GW

03/19/14 Monitoring Well

1C 55 feet VC 13.7

Ref. 12, p. 40; 

38, pp. 24, 

420, 421; 72, 

p. 40

509502

8023

WVSMWWE

S-07-

032014

-

GW

03/20/14 Monitoring Well

7S 50 feet VC 7.7

Refs. 12, p. 

42; 72, p. 44; 

84, pp. 8, 9

509502

8024

WVSMWWE

S-06D032014

-

GW

03/20/14 Monitoring Well

6D 49 feet VC 66.9

Refs. 12, p. 

42; 72, p. 46; 

84, pp.4, 5

509502

8025

WVSMWWE

S-06S032014

-

GW

03/20/14 Monitoring Well

6S 30 feet VC 47.2

Refs. 12, p. 

42; 72, p. 48; 

84, pp. 6, 7

509502

8026

WVSMWWE

S-09D032014

-

GW

03/20/14 Monitoring Well

9D 46 feet VC 31.7

Refs. 12, p. 

42; 72, p. 50; 

84, pp.14, 15

509502

8027

WVSMWWE

S-09S032014

-

GW

03/20/14 Monitoring Well

9S 31 feet Cis-1,2-DCE

VC

7.1

133

Refs. 12, p. 

42; 72, pp. 51, 

52; 84, pp.16, 

17
65

Lab ID

EPA 

Sample 

ID

Date Location

Depth 

Below 

Ground 

Surface

Hazardous 

Substance

Hazardous 

Substance 

Concentration 

(Adjusted 

Concentration)

μg/L

Reference

509502

8028

WVSMWWE

S-08D032014

-

GW

03/20/14 Monitoring Well

8D 51 feet Cis-1,2-DCE 21.3

Refs. 12, p. 

42; 72, p. 53; 

84, pp. 10, 11

509502

8029

WVSMWWE

S-08S032014

-

GW

03/20/14 Monitoring Well

8S 34 feet Cis-1,2-DCE

VC

269

20.4

Refs. 12, p. 

42; 72, pp. 55, 

56; 84, pp. 12, 

13

Attribution:

The West Vermont Drinking Water Contamination is a contaminated ground water 

plume originating from at least two sources where hazardous substances have been released 

and seeped through the ground to the aquifer.

As stated in the site history section of this HRS Documentation Record, the U.S. EPA 

Technical Memorandum identified three properties as potential sources of contamination in the 

residential area: Allison Transmission, Genuine Parts (also known as the Former Allison 

Transmission Plant 10), and Michigan Plaza. Each PRP property had releases of PCE or TCE, 

with DCE and VC as natural breakdown products (Ref. 38, p. 36). Although chlorinated 

solvents are present at Allison Transmission, the data indicate that the contamination is 

restricted to the Allison Transmission property, and Allison Transmission is not a contributor to 

Residential Area well contamination (Ref. 38, p. 36; 48; 75).

Genuine Parts (GP) and Michigan Plaza (MP) are the principle sources of 

contamination in the deeper parts of the sand and gravel aquifer where the target receptor 

wells are screened. Recent EPA sampling upgradient of GP showed only trace levels of 

contaminant in one location. Sampling along Holt Road and Michigan Street west of the 

intersection showed no detectable contamination. There are no other sources of contamination 

upgradient of the target receptors (Ref. 107; 124; Figure 1-2).

GP is directly north of Little Eagle Creek and shallow ground water contamination is 

contained on-site, but deeper ground water underflows the creek and enters the main valley 

associated with the confluence of Little and Big Eagle Creeks. This is supported both by 

ground water gauging and contaminant concentrations in wells MW-165S&D, MW-166S&D, 

MMW-3S, MMW-4D, MMW-5D, MMW-6D, MMW-7S, and MMW-18D&LA. The GP 

contamination flowing into the lower valley is only present in wells screened greater than 10 

feet below the water table. Ground water contamination related to the MP sewer release 

source areas is present from the top of the water table to the sands below the first encountered 
66

fine grained unit. As explained in section 3.0.1, there is no aquifer discontinuity between the 

water table and the top of the first fine grained unit (Ref. 107, pp. 1-3).

The two contaminant plumes are co-mingled in the area south of the east-west sewer 

line north of Michigan Street (MP main source area). South of Little Eagle Creek and north of 

well nests MW-174 and MMW-11, there is no detectable contamination at the water table. Comingling begins where shallow contamination is present in wells MMW-8S, MMW-9S, MMW10S, and MMW-12S. As explained in section 3.0.1, shallow and deep horizons are 

interconnected and part of one aquifer (Ref. 74, p. 4). 

Below is a brief narrative discussing the facilities’ business activities and any 

environmental investigations that were conducted.

Genuine Parts

700 North Olin

Indianapolis, Indiana

Genuine Parts is the former General Motors Corporation, Allison Gas Turbine (AGT) 

Division Plant 10 (Ref. 36, p. 13). The facility is located on 5.4 acres (Ref. 36 p. 14). Between 

1956 and 1973, BHT Corporation operated the facility for carburetor and brake remanufacturing (Ref. 36, p. 13). General Motors purchased the property from BHT in 1973 and 

used the facility for warehousing obsolete machines, tooling, and fixtures until the mid1980s, at 

which time the property became part of the AGT Division. BHT became part of Genuine Parts 

through acquisition and merger, subsequent to the sale of the property to General Motors. 

AGT continued to use the facility for warehousing until December 1993 when the property was 

sold to the Allison Engine Company (AEC). AEC sold the property to Associated Properties, 

Inc. in 1998 (Ref. 36, p.13; 79, p. 8). Associated Properties, Inc. sold the facility to American 

Art Clay Company, Inc. in 2002 (Ref. 75, p. 8; 36, p. 13). American Art Clay Company, Inc. 

sold the facility to the current property owner, Faris Mailing Inc., in 2012 (Ref. 75, p. 8). Two 

businesses, Faris Mailing and Asset Recycling conduct their operations at this property (Ref. 

110, p. 1).

Engineering Science, Inc. conducted two environmental investigations at the property in 

1992 and 1993. The initial investigation, entitled Phase I Information Review Report for

General Motors Corporation Allison Gas Turbine Division, was completed in July of 1992.The 

Phase I assessment identified two reported releases of quench oil in the southwest corner of 

the property and an unknown amount of hydraulic fluid in the southwest courtyard; possible 

waste burial area at western end of the property; and possible area of dumping near the 

northwest corner of the plant. The Phase I identified the Plant 10 site as a potential area of 

concern. The report included a recommendation to install three monitoring wells and one soil 

boring (Ref. 21, p. 13).

An intrusive follow-up assessment of the areas of environmental concern identified 

during the Phase I assessment was completed in November of 1993. Methods and results of 

this additional investigation were reported in a document entitled Phase II Site Assessment 

Final Report for General Motors Corporation Allison Gas Turbine Division Dated November 19, 

1993. Results of this investigation Identified TCE, VC, 1,2-DCE, PCE, Toluene, and methylene 

chloride in the soil on-Site (Ref. 21, p. 13). 
67

According to a Feasibility Study Report, dated June 3, 1997, TCE and 1, 2-

dichloroethylene (1,2-DCE) were the most frequently detected compounds found in soil 

samples collected from the vadose zone (Ref. 22, p. 531; 112, p. 9). Analytical data indicate 

detectable TCE concentration ranged from 29 ug/kg to 120,000 ug/kg and, 1,2-DCE 

concentrations ranged from 4 ug/kg to 12,000 ug/kg (Refs. 22, p. 530; 112, p. 9). Analytical 

data indicate detectable TCE concentrations ranged from 5.4 ug/l to 13,000 ug/l, cis-1,2-DCE 

concentrations ranged from 5.3 ug/l to 65,000 ug/l, trans-1,2-DCE concentrations ranged from 

5.9 ug/l to 1,400 ug/l, and detectable VC concentrations ranged from 12 ug/L to 3,400 ug/l in 

the ground water (Refs. 22, p. 531; 112, p. 10). A Voluntary Remediation Agreement (VRA) 

for the Genuine Parts site was signed January 11, 2000 by IDEM’s Deputy Assistant 

Commissioner (Ref. 34, pp. 1-17). As a result, the facility is currently being addressed by the 

IDEM’s Voluntary Remediation Program (VRP). The VRP ID# for the site is 6991004.(Ref. 34, 

pp. 1, 2).

The presence of historic buried waste was discovered in May 2000 while installing 

ground water remediation system piping (Ref. 21, p. 44; 36, p. 57). During this time stained 

soils, decayed drums, and miscellaneous small metallic debris (automotive parts) were 

encountered during trenching activities in the southwest corner of the site in the vicinity of a 

soil vapor extraction remediation system vent well, SVE-8 (Ref. 21, p. 44). Contaminated soil 

with varying amounts of debris was also encountered in the vicinity of another system vent well 

(SVE-3) and in several soil/vent boreholes. The discovery of the buried waste prompted an 

investigation of the entire property (excluding areas under roof) to locate other potential burial 

area (Ref. 21, p. 44). 

Hazardous waste was excavated between April 9, 2001 and July 6, 2001 (Ref. 21, p. 

50). During this time 190 loads of waste were transported and disposed at Environsafe 

Services of Ohio, Inc. in Oregon, Ohio resulting in a total of 4,981.51 tons (Ref. 21, p. 50).

Non-hazardous waste was excavated between April 6, 2001 and May 22, 2001. During 

this time 264 loads of waste were transported and disposed at Twin Bridges Landfill in 

Danville, Indiana for a total of 4,805.20 tons (Ref. 21, p. 50).

Two source areas were identified at the site: 1) an eastern source associated with 

former solvent operations, and (2) a western source area associated with historic degreasing 

and industrial waste burial activities (Refs. 36, p. 34; 53, p. 299). The exact nature of historic 

operations and potential contaminant release mechanisms in the eastern source area are not 

known (Ref. 36, p. 34). A former solvent storage tank existed in a partially sub-grade concrete 

structure that was located outside along the facility wall in this area. General Motors removed 

the solvent tank and concrete structure in the 1990’s (Ref. 36, p. 34). Documentation of this 

removal is not available, although based on soil data collected since that time, the removal of 

the tank and structure mitigated any source material in this area (Ref. 36, pp. 34, 35).

The western source area is associated with former parts degreasing operations and 

waste burial activities (Ref. 36, p. 36). A small anomalous area of TCE occurrence in ground 

water was also noted to the east of the site at the intersection of Olin Avenue and Walnut 

Street. This area is referred to as the East Bioremediation Source Area (Ref. 53, p. 299). Refer
68

to the Final Remediation Work Plan, for a further summary of on and off-site investigation 

activities (Ref. 36).

According to a Remedial Progress Report, dated August 2014, TCE was detected as 

high as 620 μg/L in 2004 in monitoring well 153 (located in the western source area) (Ref. 36, 

p. 179, 276) and as high as 1800 μg/L in 1995 in monitoring well 10 (located in the eastern 

sector of the property) (Ref. 36, p. 176, 276). The Groundwater Potentiometric Surface Maps 

completed for the investigation indicates that ground water flow is in a southern direction for 

the shallow monitoring wells and a southern to southwestern direction for the deep monitoring 

wells (Ref. 36, pp. 255 - 265). 

Michigan Plaza

2801-3823 West Michigan Street

Indianapolis, Indiana

The site is located to the east of the intersection of West Michigan Street and Holt Road 

in a mixed residential commercial setting on the near west side of Indianapolis (Ref. 19, p. 14; 

Figure 1-3). The site currently consists of a strip mall along the south side of West Michigan 

Street and a multi-building apartment complex to the north of the street. The apartment 

complex consists of several apartment buildings and support buildings on approximately 13.7 

acres and the Michigan Plaza facility consists of a single multi-tenant retail facility covering 

approximately 1.5 acres (Ref. 19, p. 14). AIMCO Michigan Meadows Holdings, LLC (AMMH) 

previously owned the two properties at the time the pre-existing environmental impacts 

associated with historic tenant site activities were first Identified (Ref. 19, p.21). 

Aimco Michigan Meadows Holdings, L.L.C. owned the subject property from December 

29, 1999, until May 8, 2008. On May 8, 2008, Aimco Michigan Meadows Holdings, L.L.C. 

conveyed the property to Aimco Michigan Apartments, LLC through a Quitclaim Deed. Aimco 

Michigan Apartments, LLC owned the subject property from May 8, 2008, until October 15, 

2008. On October 15, 2008, Aimco Michigan Apartments, LLC conveyed the property to 

GenNx Properties VII, LLC through a Limited Warranty Deed (Ref. 80, p. 8).

Historic dry-cleaning operations at Michigan Plaza by a company called Accent 

Cleaners are believed to have impacted on-site soils, indoor air and ground water. The exact 

timing of subsurface impacts is not known (need Ref. 19, p. 14). 

The results of historic site investigations completed since 2001 indicate that chlorinated 

volatile organic chemicals are present in the subsurface soils, soil gas, indoor air, and ground 

water at the site (Ref. 19, p. 14). A March, 2004 ground water sample taken from a deep 

ground water system (MW-165D) indicated dissolved chlorinated solvent ground water impacts 

(most notably cis-1,2-DCE and vinyl Chloride) beneath the Michigan Meadows Apartments. A 

vinyl chloride concentration of 720 ug/l and a cis-1, 2-DCE concentration of 2,300 ug/l were 

exhibited (Ref. 30, pp. 2, 14). Three source areas have been identified on site. The source 

areas are associated with the historic solvent discharges from the dry cleaners to a leaky 

sewer line (Ref. 19, p. 14). The source areas have been identified as a combination of leaky 

lines and contaminated soil and have been designated as Source Area A, B, and C (Ref. 19, 

pp. 14, 15). Refer to the remediation Work Plan for a location of the source area (Ref. 19, pp. 

149, 1288, 1496). The primary chemicals of concern (COCs) for the site are PCE and its 
69

breakdown products, including TCE, cis -1, 2 dichloroethylene (cis-1, 2-DCE) and vinyl 

chloride (Ref. 19, pp. 14, 15). 

A Voluntary Remediation Agreement (VRA) for the Michigan Plaza site was signed April 

20, 2007 by IDEM’s Deputy Assistant Commissioner (Ref. 33, p.1). As a result, the facility is 

currently being addressed by the IDEM’s Voluntary Remediation Program (VRP). The VRP ID# 

for the site is 6061202 (Ref. 19, p. 1464). 

Vapor mitigation systems have been installed and operated at Michigan Plaza since 2006 and 

at the apartment complex since 2008, to address vapor intrusion concerns. According to the 

VRP Remediation Work Plan (RWP), these systems will continue to operate until the cleanup 

objectives have been met (Ref. 21, p. 15).

The ground water is currently being remediated by the injection of a bioremediation 

product consisting essentially of food-grade soybean Oil (Ref. 19, p. 1466; 39). The injections 

occurred in 2007 and 2009 (Ref. 19, pp. 55, 155–172) , During the second round of 

bioremediation injections, 16,500 pounds of bioremediation product were injected: 3,000; 

4,500; and 9,000 pounds in Source Areas A, B, and C, respectively during the second round of 

injections (Ref. 19, p. 55). The shallow plumes for cis-1,2-DCE and VC compounds are larger 

than the PCE and TCE plumes because the previous 2007 and 2009 bioremediation injection 

events have facilitated the generation of the chlorinated solvent daughter products (cis-1,2-

DCE and VC) through sequential dechlorination (Ref. 19, p. 71). It should be noted that vinyl 

chloride concentrations in several monitoring wells have increased after injections of the 

bioremediation product. Table 3, Cumulative Monitoring Well Ground Water Analytical 

Results, found in the Remediation Work Plan dated September 13, 2013, depicts a cumulative 

of vinyl Chloride Concentrations before and after the bioremediation injections (Ref. 19, p. 231) 

As requested by IDEM, the consultant monitored methane production related to 

fermentation process associated with the bioremediation injections completed during July 2013 

(Ref. 40, p. 64). According to an email attachment from the consultant, methane has been 

monitored since September 22, 2013 (Ref. 18, pp. 1-28). A subset of the wells that have 

experienced elevated levels above 10% LEL were screened. Methane levels were initially 

measured at 23,000 ppm in soil vapor extraction system SVE-1 and at 29,000 ppm at 

Monitoring well MGW-8D (Ref. 18, p. 1).

Monitoring wells MMW-P03S, MMW-P-08, and MW 9S have been installed near the 

source area (Ref. 19, pp. , 173). A release of PCE to the ground water was detected in these 

monitoring wells at 397 μg/L in MMW-P03S, 6,280 ug/l in MMW-P-08, and 782 ug/l in MW 9

(Ref. 19, pp. 232, 239, 1,313).

The consultant for Michigan Plaza samples forty-six (46) monitoring wells on a quarterly basis 

(Ref. 19, p. 110). Potentiometric Maps submitted to IDEM depict a south-southeasterly ground 

water flow direction (Ref. 19, pp. 142, 143). 

The Michigan Plaza facility has been active in IDEM’s VRP. The facility has been 

conducting soil and ground water investigations and has been attempting to remediate the 

source area and ground water contamination since 2007. All quarterly monitoring reports, 

investigative and remedial reports, and other requested documents have been submitted to 
70

IDEM (Ref. 86, p. 1).

Hazardous Substances Released

• TCE

• trans-1,2-DCE

• cis-1,2-DCE

• VC

• 1,1-DCA

Trans-1,2-DCE, cis-1,2-DCE, VC are degradation products of TCE and PCE (Ref. 64, pp. 1-5).

As specified in the HRS Rule (Ref. 1, Section 3.1.1. p. 69), an observed release factor value of 

550 was assigned to the West Vermont Drinking Water Contamination since an observed 

release by chemical analysis was established to the aquifer.

Ground Water Observed Release Factor Value: 550

The ground water samples used to delineate the outline of the plume, covers approximately 

20.2 acres (Figure 1-2 of this HRS documentation record); Sections 3.0.1 and 3.1.1 of this 

HRS documentation record). The area of the ground water plume is based on available 

samples that meet the criteria for an observed release and the target distance limit is 

measured from the source of the contamination (Ref. 1; Section 3.1.1 of this HRS 

documentation record).
71

3.2 WASTE CHARACTERISTICS

3.2.1 Toxicity/Mobility

The following toxicity, mobility and combined toxicity/mobility factor values have been assigned 

to those substances present in the observed release and/or a source with a containment value 

greater than 0.

Hazardous 

Substance

Source 

No.

(and/or

Observed 

Release)

Toxicity 

Factor

Value

Mobility 

Factor

Value*

Does Hazardous

Substance meet 

Observed 

Release by 

chemical 

analysis? (Y/N)

Toxicity/

Mobility

(Ref. 1,

Table 3-9)

References

1,1-DCA Observed 

Release 10 1 Y 10 Ref. 2, p. 4

1,1-DCE 2 10 1 N 10 Ref. 2, p. 3

cis-1,2-DCE

1; 2

Observed 

Release

1,000 1 Y 1,000 Ref. 2, 

p. 8

trans-1,2-DCE

2;

Observed 

Release

100 1 Y 100 Ref. 2, 

p. 10

TCE

1; 2

Observed 

Release

1,000 1 Y 1,000 Ref. 2, 

p. 12

PCE 1; 2 100 1x10-2 N 1 Ref. 2,

p. 16

VC

2;

Observed 

Release

10,000 1 Y 10,000 Ref. 2, 

p. 14

*All hazardous substances that meet the criteria for an observed release by chemical analysis to one or more aquifers 

underlying the source(s), regardless of the aquifer being evaluated, are assigned a mobility factor value of 1 (Ref. 1, Section 

3.2.1.2, p. 72).

The hazardous substance with the highest toxicity/mobility factor value available to the ground 

water migration pathway is vinyl chloride (10,000).

Toxicity/Mobility Factor Value: 10,000

(Ref. 1, Table 3-9, p. 76) 
72

3.2.2 Hazardous Waste Quantity

Source 

No. Source Type Source Hazardous Waste Quantity

1 Other Unknown, but >0

The West Vermont Drinking Water plume has been scored as consisting of a ground water 

plume with an identified source. According to Section 2.4.2.2 in the HRS (Ref. 1, pp. 65, 66), if 

any target for that migration pathway is subject to Level I or Level II concentrations and the 

hazardous constituent quantity is not adequately determined, assign a value from Table 2-6 or 

a value of 100 whichever is greater, as the hazardous waste quantity factor value for that 

pathway. Because Level I concentrations were present in a drinking water well (Section 

3.3.2.2 of this HRS documentation record), a hazardous waste quantity factor value of 100 is 

assigned for the ground water pathway.

Hazardous Waste Quantity Factor Value: 100 

(Ref. 1, Table 2-6, pp. 65, 66) 

3.2.3 Waste Characteristics Factor Category Value

As specified in the HRS (Ref. 1, Section 3.2.3, p. 76), the Hazardous Waste Quantity Factor 

Value of 100 was multiplied by the highest Toxicity/Mobility Value of 10,000, resulting in a 

product of 1,000,000. Based on this product, a Waste Characteristics Factor Category Value 

of 32 was assigned from Table 2-7 of the HRS (Ref. 1, Section 2.4.3.1, p. 66).

Utilizing vinyl chloride has the highest Toxicity/Mobility Factor Value of the substances listed in 

Section 3.2.1 of this HRS documentation record (Ref. 2, p. 14).

Toxicity/Mobility Factor Value: 10,000 (Ref. 2, p. 14)

Hazardous Waste Quantity Factor Value: 100

Hazardous Waste Quantity Factor Value: 1,000,000

 

Waste Characteristics Factor Category Value: 32

(Ref. 1, Table 2-7, p. 66)
73

3.3 GROUND WATER PATHWAY TARGETS

The West Vermont Drinking Water Contamination site includes two residences where ground 

water from private residential wells is utilized for drinking water. 

3.3.1 Nearest Well

Well ID: E5AS4/E5AS7 (Duplicate of E5AS4), E5AS6

Level of Contamination (I, II, or potential): I

If potential contamination, distance from source in miles: N/A

As specified in the HRS (Ref. 1, Section 3.3.1, Table 3-11, pp. 76, 77), if one or more drinking 

water wells are subject to Level I concentrations, a Nearest Well Factor Value of 50 is 

assigned. Level I vinyl chloride concentrations have been documented in the ground water of 

residential wells located at 4018 West Vermont (Samples E5AS4 and E5AS7) and 4012 

Cossell (Sample E5AS6) (Section 3.3.2.2 of this HRS documentation record).

Nearest Well Factor Value: 50 

(Ref. 1, Table 3-11) 

3.3.2 Population

3.3.2.1 Level of Contamination

3.3.2.2 Level I Concentrations

There are three (3) residents that utilize private wells for drinking water and the drinking water 

was found to exceed the MCL for vinyl chloride (Ref. 45, pp. 2, 3).

Table 9 

Level I Concentrations 

Resident

Drinking Water 

Sample 

Number

Vinyl Chloride 

Concentration 

μg/L

(Adjusted 

Concentration 

μg/L)

Vinyl 

Chloride 

Benchmark 

μg/L

Reference

WV-RES4018WVSE5AS4 4.9 J- (4.9) .017 Ref. 2, p. 13; Table 

6 of this HRS 

Documentation 

Record

WV-RES4012COSE5AS6RE 1.4 J- (1.4) .017 Ref. 2, p. 14; Table 

6 of this HRS 

Documentation

Record

WV-RES4012COSE5AS7 

(Duplicate of 

E5AS6

4.8 J- (4.8) .017 Ref. 2, p. 14; Table 

6 of this HRS 

Documentation 

Record 2

J- - Sample was analyzed outside the holding time and result is estimated with a low bias. Results for 
74

release samples require no adjustment according to procedures described in EPA fact sheet 540-F-94-

028, Using Qualified Data to Document an Observed Release and Observed Contamination, November 

1996.

RE- Results from rerun of sample E5AS6

WV-RES-4010COS-DUP was mislabeled in the field on October 17, 2014 from a residential property 

and was submitted to the lab with incorrect locations. The duplicate sample from 4020 Cossell in fact 

was collected from 4012 Cossell. Therefore, the Sample Location in Ref. 89, pp. 23 should read “WVRES-4012COS-DUP” instead of “WV-RES-4020COS-DUP.”

According to a Residential Well Information form, there are two people living at 2018 West 

Vermont and one person living at 4012 Cossell (Ref. 45, pp. 2, 3). Three total residents are 

scored. 

 

Level I Concentrations Factor Value: 30 

3.3.2.3 Level II Concentrations

Private residential water wells in which observed releases are established are subject to Level 

I contamination. No Level II contamination was observed

Level II Concentrations Factor Value: NS

3.3.2.4 Potential Contamination

(Ref. 1, Table 3-11) 

Ground water from the White River and Riverside wells is pumped to the White River treatment 

plant where it blends with raw surface water, then passes through the entire surface water 

treatment process prior to distribution to customers (Ref. 68, p. 1).

The Riverside and White River Municipal Well Calculations table (Ref. 138, p. 1) depicts the 

Well ID#, Well/Intake capacity, and population served per each well. The table explains how 

the population was apportioned for each well/intake based on capacity. The well capacity 

numbers for the Riverside and White River wells were supplied by Citizens Energy Group (Ref. 

136, pp. 1, 2). The White River treatment plant supplies 60% of the population of Indianapolis 

(Ref. 137, p. 1). The population served by Citizens Water is 876,728 (Refs. 68, p. 1; 134, p. 2).

The Speedway Well Calculations table (Ref. 139, p. 1) depicts the Well ID#, Well/Intake 

capacity, and population served per each well. The table explains how the population was 

apportioned for each well/intake based on capacity. The well capacity numbers for the 

Speedway wells were supplied by Speedway Water Works (Ref. 141, p. 2). The population 

served by Speedway Municipal wells is 11,812 (Ref. 135, p. 4). 

The Municipal Well Table below depicts the depth, distance from the source area, the 

population apportioned to each well, the aquifer producing the water, the screen length (where 

applicable), the water producing interval, and references.
75

Municipal Well Table

Riverside Wells Depth Distance Population 

Apportioned Aquifer Screen Length

Water 

Production 

Interval/ 

Screen 

Interval

References

RS 2 297 feet 2-3 Miles 4203.531 Limestone NA 225 feet

Refs. 29, p. 5; 115, 

p. 3; 117, p. 1; 

136, pp. 1, 2; 138, 

p. 1; 140, p. 2; 

Figure 1-5

RS 7 196 feet 2-3 Miles 4045.898 Limestone NA NA*

Refs. 29, p. 5; 115, 

p. 3; 117, p. 1; 136, 

pp. 1, 2; 138, p. 1; 

140, p. 12; Figure 

1-5

RS 8 277 feet 2-3 Miles 4203.531 Limestone NA 277 feet

Refs. 29, p. 5; 115, 

p. 3; 117, p. 1; 136, 

pp. 1, 2; 138, p. 1; 

140, p. 3; Figure 1-

5

RS 9 251 feet 2-3 Miles 4413.707 Limestone NA 244 feet

Refs. 29, p. 5; 115, 

p. 3; 117, p. 1; 136, 

pp. 1, 2; 138, p. 1; 

140, p. 4; Figure 1-

5

RS 17 391 feet 2-3 Miles 3152.648 Limestone NA 370 feet

Refs. 29, p. 5; 115, 

p. 3; 117, p. 1; 136, 

pp. 1, 2; 138, p. 1; 

140, p. 5; Figure 1-

5

RS 18 400 feet 2-3 Miles 3467.913 Limestone NA 88-? Feet

Refs. 29, p. 5; 115, 

p. 3; 117, p. 1; 136, 

pp. 1, 2; 138, p. 1; 

140, p. 6; Figure 1-

5

RS 19 392 feet 1-2 Miles 3467.913 Limestone NA NA*

Refs. 29, p. 5; 115, 

p. 3; 117, p. 1; 

136, pp. 1, 2; 138, 

p. 1; 140, p. 12;

Figure 1-5

RS 22 271 feet 2-3 Miles 2627.207 Limestone NA 267 feet

Refs. 29, p. 5; 115, 

p. 3; 117, p. 1; 136, 

pp. 1, 2; 138, p. 1; 

140, p. 7; Figure 1-

5

RS 26 286 feet 2-3 Miles 3152.648 Limestone NA NA*

Refs. 29, p. 5; 115, 

p. 3; 136, pp. 1, 2; 

138, p. 1; 140, p. 8

RS 27 416 feet 2-3 Miles 4466.251 Limestone NA 98- ? feet

Refs. 29, p. 5; 115, 

p. 3; 117, p. 1; 136, 

pp. 1, 2; 138, p. 1; 

140, p. 9; Figure 1-

5

RS 29 290 feet 2-3 Miles 3152.648 Limestone NA 285 feet

Refs. 29, p. 5; 115, 

p. 3; 117, p. 1; 136, 

pp. 1, 2; 138, p. 1; 

140, p. 11; Figure 

1-5
76

RS A 97 feet 2-3 Miles 2364.486 Sand and 

Gravel 20 feet 77-97 feet

Refs. 29, p. 5; p. 3; 

115, p. 3; 116, pp. 

15, 16; 117, p. 1, 2; 

136, pp. 1, 2; 138, 

p. 1; Figure 1-5

RS B 80 feet 2-3 Miles 5254.413 Sand and 

Gravel NA NA*

Ref. 29, p. 5; 115, 

p. 3; 136, pp. 1, 2; 

Figure 1-5

RS C 80 feet 2-3 Miles 7618.899 Sand and 

Gravel NA NA*

Refs. 29, p. 5; 115, 

p. 3; 136, pp. 1, 2; 

138, p. 5

RS D 74 feet 2-3 Miles 3888.266 Sand and 

Gravel NA NA*

Refs. 29, p. 5; 115, 

p. 3; 136, pp. 1, 2; 

138, p. 5

* According to page 1 of Reference 117, the well screens are placed at the bottom of the well.

White River Wells

WR 3 70 feet 3-4 Miles 7146.002 Sand & 

Gravel 38 feet 35-70

Refs. 29, p. 5; 115, 

p. 3; 116, p. 21; 

117, p. 1; 136, pp. 

1, 2; 138, p. 1; 140, 

pp. 12, 13; Figure 

1-5

WR 7 77 feet 3-4 Miles 3678.089 Sand & 

Gravel 20 feet 57-77 feet

Refs. 29, p. 5; 115, 

p. 3; 116, p. 25; 

117, p. 1; 136, pp. 

1, 2; 138, p. 1; 140, 

p. 13; Figure 1-5

WR 8 78 feet 3-4 Miles 10508.83 Sand & 

Gravel 20 feet 77 feet

Refs. 29, p. 5; 115, 

p. 3; 116, p. 27; 

117, p. 1; 136, pp. 

1, 2; 138, p. 1; 140, 

pp. 12, 13; Figure 

1-5

WR 9 79.5 feet 2-3 Miles 7356.178 Sand & 

Gravel 20 feet 80 feet

Refs. 29, p. 5; 115, 

p. 3; 116, pp. 29, 

30; 117, p. 1; 136, 

pp. 1, 2; 138, p. 1; 

140, pp. 12, 13; 

Figure 1-5

Speedway Wells

2 78 feet 1-2 Miles 1,135.25 Sand & 

Gravel 30 feet 48-78 feet

Refs. 29, p. 4; 

115, p. 2; 116, pp. 

11, 12; 118, p. 1; 

139, p.1; 141, p. 2; 

Figure 1-5

3 63 feet 1-2 Miles 648.7143 Sand & 

Gravel 10 feet 53-63 feet

Refs. 29, p. 4; 

115, p. 2; 118, p. 1; 

116, pp. 31, 32; 

118, p. 1; 139, p. 1; 

141, p. 2; Figure 1-

5

4 69 feet 1-2 Miles 567.625 Sand & 

Gravel 10 feet 59-69 feet

Refs. 29, p. 4; 115, 

p. 2; 116. pp. 33, 

34; 118, p.1; 139, 

p. 1; 141, p. 2; 

Figure 1-5

6 71 feet 1-2 Miles 810.8928 Sand & 

Gravel 20 feet 51-71 feet

Refs. 29, p. 4; 

115, p. 2; 116, pp. 

13, 14; 118, p.1; 

139, p. 1; 141, p. 2; 

Figure 1-5
77

7R 69 feet 1-2 Miles 486.5357 Sand & 

Gravel 11 feet 54-65 feet

Refs. 29, p. 4; 

115, p. 2; 118, p. 1; 

139, p. 1; 141, p. 2; 

143 pp. 1,2; Figure 

1-5

8R 57 feet 1-2 Miles 364.9018 Sand & 

Gravel 10 feet 47-57 feet

Refs. 29, p. 4; 115, 

p. 2; 118, p. 1; 139, 

p. 1; 141, p. 2; 142, 

p. 2; 146; 147; 

Figure 1-5

9 64 feet 2-3 Miles 486.5357 Sand & 

Gravel 12 feet 52-64 feet

Refs. 29, p. 4; 115, 

p. 2; 118, p. 1; 139, 

p. 1; 141, p. 2; 

Figure 1-5

10R 64 feet 1-2 Miles 486.5357 Sand & 

Gravel 10 feet 66 feet

Refs. 29, p. 4; 115, 

p. 2; 116, p. 1; 118, 

p. 1; 139, p. 1; 141, 

p. 2; Figure 1-5

11R 55 feet 2-3 Miles 608.1696 Sand & 

Gravel 10 feet 56 feet

Refs. 29, p. 4; 118, 

p. 1; 139, p. 1; 141, 

p. 2; Figure 1-5

12 72 feet 2-3 Miles 810.8928 Sand & 

Gravel 8 Feet 64-72 feet

Refs. 29, p. 4; 115, 

p. 2; 116, p. 5; 118, 

p. 1; 139, p. 1; 141, 

p. 2, ; Figure 1-5

13 59 feet 2-3 Miles 810.8928 Sand & 

Gravel 8 feet 60 feet

Refs. 29, p. 4; 115, 

p. 2; 116, p. 7; 118, 

p. 1; 139, p. 1; 141, 

p. 2; Figure 1-5

14R 62 feet 2-3 Miles 810.8928 Sand & 

Gravel 9 feet 60 feet

Refs. 29, p. 4; 115, 

p. 2; 116, p. 9; 118, 

p. 1; 139, p. 1; 141, 

p. 2; Figure 1-5

15 54 feet 1-2 Miles 405.4464 Sand and 

Gravel NA 54 feet

Ref. 29, p. 4; 118, 

p. 1; 139, p. 1; 141, 

p. 2; Figure 1-5

There are two properties, Genuine Parts and Michigan Plaza, that contain sources for the

contaminated ground water. The sources lay between the Riverside/White River and 

Speedway municipal well fields. The Potential Population Table below depict the distance 

ranges from Genuine Parts and Michigan Plaza to the municipal wells, the population served 

at each well, and the value assigned from Table 3-12 of Reference 1 of this HRS 

Documentation Record. 
78

Potential Population Table

Distance Municipal/Residential 

Well

Population 

Served

Value assigned 

from Table 3-12 of 

Ref. 1

References

0-1/4 Miles 21 Residential Wells* 52 53 Refs. 37, p. 8;

109, p.1; 144, p. 

1; Figure 1-3 of 

this HRS 

Documentation 

Record; Figure 

1-5 of this HRS 

Documentation 

Record

1⁄4- 1⁄2 Miles none Figure 1-5 of this 

HRS 

Documentation 

Record

1⁄2 - 1 Miles 13 Residential Wells** 32 17 Refs. 88, p.1; 

144, p.1; Figure 

1-5 of this HRS 

Documentation 

Record

1-2 Miles Speedway wells 2, 3, 

4, 6, 7R, 8R, 10R, 15; 

Riverside Well RS 19 

***

8,373.8147 939 Refs. 29, pp. 4, 

5; 138, p. 1; 139, 

p. 1; Figure 1-5 

of this HRS 

Documentation

Record

2-3 Miles Speedway Wells 9, 

11R, 12, 13, 14R; 

Riverside Wells RS A, 

RS B, RS C, RS D, RS 

2, RS 7, RS 8, RS 9, 

RS 17, RS 18, RS 22, 

RS 26, RS 27, RS 29; 

White River Wells WR 

9,  

66,895.6077

6778 Refs. 29, pp. 4, 

5; 138, p. 1; 139, 

p. 1; 145; Figure 

1-5 of this HRS 

Documentation 

Record

3-4 Miles White River Wells 

WR3, WR7, and WR8

** ***

21,332.921 1306 Refs. 29, p. 4; 

138, p. 1; Figure 

1-8 of this HRS 

Documentation 

Record

Total 9,093

 2.49 People per household (Ref. 144, p. 1)

* 2.49 times 21 homes = 52 people

** 2.49 times 13 homes = 32 people
79

*** 1-2 Mile Radius Calculation (Refs. 138, p. 1; 139, p. 1; Figure 1-5)

Speedway Wells

Well 2 Serves 1,135.25 People

Well 3 Serves 648.7143 People

Well 4 Serves 567.625 People

Well 6 Serves 810.8928 People

Well 7R Serves 486.5357 People

Well 8R Serves 364.9018 People

Well 10R Serves 486.5357 People

Well 15 Serves 405.4464 People

Riverside Wells

RS 19 Serves 3467.913 People

The total number of people served in the1-2 mile radius is 8,373.8147 people 

 2-3 Mile Calculation (Refs. 138, p. 1; 139, p. 1; Figure 1-5)

Speedway Wells

Well 9 Serves 486.5357 People

Well 11R Serves 608.1696 People

Well 12 Serves 810.8928 People

Well 13 Serves 810.8928 People

Well 14R Serves 810.8928 People

Riverside Wells

Well RS A Serves 2364.486 People

Well RS B Serves 5254.413 People

Well RS C Serves 7618.899 People

Well RS D Serves 3888.266 People

Well RS 2 Serves 4203.531 People

Well RS 7 Serves 4045.898 People

Well RS 8 Serves 4203.531 People

Well RS 9 Serves 4413.707 People

Well RS 17 Serves 3152.648 People

Well RS 18 Serves 3467.913 People

Well RS 22 Serves 2627.207 People

Well RS 26 Serves 3152.648 People

Well RS 27 Serves 4466.251 People 

Well RS 29 Serves 3152.648 People

White River Wells

 Well WR 9 Serves 7356.178 People 

The total number of people served in the 2-3 mile radius is 66,895.6077 people
80

** ***3-4 Mile Calculation (Ref. 138, p. 1; Figure 1-5)

White River Wells

Well WR 3 Serves 7146.002 People

Well WR 7 Serves 3678.089 People

Well WR 8 Serves 10508.83 People

The total number of people served in the 3-4 mile radius 21,332.921 people 

Table 3-12 value of 9,093 is multiplied by .1 = 909.3

Potential Contamination Factor Value: 909

3.3.3 Resource

Resource use of the combined aquifer within the target distance limit does not include any of

the Resource Factors. Therefore, a Resource Factor value of 0 is assigned (Ref. 1, Section

3.3.3, p. 78). 

Resources Factor Value: 0

3.3.4 Wellhead Protection Area

Neither the source nor the ground water plume lies within a Wellhead Protection Area. 

Therefore, the Wellhead Protection Area Factor Value of 0 is assigned (Ref. 1, Section 3.3.4, 

p. 78; 83, pp. 65, 119, 151, 152).

Wellhead Protection Area Factor Value: 0
81

Attachment 1

HRS Scoring and Target Information Showing That Michigan Plaza Will Score on its 

Own
82

WORKSHEET FOR COMPUTING HRS SITE SCORE

For Michigan Plaza

S S2

1. Ground Water Migration Pathway Score (Sgw)

(from Table 3-1, line 13)

100.00 10,000.00

2a. Surface Water Overland/Flood Migration Component 

(from Table 4-1, line 30)

NS* 

2b. Ground Water to Surface Water Migration Component 

(from Table 4-25, line 28)

NS

2c. Surface Water Migration Pathway Score (Ssw) 

Enter the larger of lines 2a and 2b as the pathway score.

NS

3. Soil Exposure Pathway Score (Ss)

(from Table 5-1, line 22)

NS

4. Air Migration Pathway Score (Sa)

(from Table 6-1, line 12)

NS

5. Total of Sgw

2 + Ssw2 + Ss2 + Sa2

10,000.00

6. HRS Site Score

Divide the value on line 5 by 4 and take the square root 50.00 

Notes: *NS = Not Scored
83

HRS Table 3-1 –Ground Water Migration Pathway Scoresheet (For Michigan Plaza)

Factor Categories and Factors Maximum

Value

Value

Assigned

Likelihood of Release to an Aquifer:

1. Observed Release 550 550 

2. Potential to Release:

 2a. Containment 10 NS

 2b. Net Precipitation 10 NS

 2c. Depth to Aquifer 5 NS

 2d. Travel Time 35 NS

 2e. Potential to Release [lines 2a x (2b + 2c + 2d)] 500 NS

4. Likelihood of Release (higher of lines 1 and 2e) 550 550

Waste Characteristics:

4. Toxicity/Mobility (a) 10,000

5. Hazardous Waste Quantity (a) 100

6. Waste Characteristics 100 32

Targets:

7. Nearest Well 50 50

8. Population:

 8a. Level I Concentrations (b) 30

 8b. Level II Concentrations (b) NS

 8c. Potential Contamination (b) 909

 8d. Population (lines 8a + 8b + 8c) (b) 939

9. Resources 5 NS

10. Wellhead Protection Area 20 NS

11. Targets (lines 7 + 8d + 9 + 10) (b) 989

Ground Water Migration Score For An Aquifer:

12. Aquifer Score [(lines 3 x 6 x 11)/82,500]c

550 x 32 x 989 =17,406,400/82,500 =210.9 100 100.00 

Ground Water Migration Pathway Score:

14. Pathway Score (Sgw),

(highest value from line 12 for all aquifers evaluated)c 100 100.00 

(a) Maximum value applies to waste characteristics category

(b) Maximum value not applicable

c

 Do not round to nearest integer

NS - Not Scored
84

Distance Municipal/Residential 

Well

Population 

Served

Value assigned 

from Table 3-12 References

0-1/4 Miles 21 Residential Wells* 52 53 Ref. 52, pp. 1, 3; 

37, p. 8; Figure 

1-3 of this HRS

Documentation

Record

1⁄4- 1⁄2 Miles None 0 0 Ref. 88, p.2

1⁄2 - 1 Miles 13 Residential Wells** 32 17 Ref. 88, p.2; 

Figure 1-9

1-2 Miles Speedway Wells 2, 3, 

4, 6, 7R, 15; Riverside 

well RS 19*** 

7,522.3772 939 (Ref. 29, p. 5; 

Figure 1-9 of this 

Documentation 

Record)

2-3 Miles Speedway Wells 8R, 9, 

10R, 11R, 12, 13, 14R; 

Riverside Wells RS A, 

RS B, RS C, RS D, RS 

2, RS 7, RS 8, RS 9, 

RS 17, RS 18, RS 22, 

RS 26, RS 27, RS 29; 

White River Wells WR 

9,  

67,747.0452 6778 (Ref. 29, p. 4, 5; 

Figure 1-9 of this 

Documentation 

Record)

3-4 Miles White River Wells 3, 7, 

8** *** 

21,332.921 1306 (Ref. 29, pp. 4; 

Figure 1-9 of this 

Documentation 

Record)

Total 9093

*0-1/4 Mile Radius Calculation

• 2.49 People per household (Ref. 144)

2.49 times 21 homes =52 people

**1⁄2 - 1 Mile Radius Calculation

• 2.49 People per household (Ref. 144)

2.49 times 13 homes = 32.37 people

Potential Population

Michigan Plaza Property
85

*** 1-2 Mile Radius Calculation

Speedway Wells

Well 2 Serves 1,135.25 People

Well 3 Serves 648.7143 People

Well 4 Serves 567.625 People

Well 6 Serves 810.8928 People

Well 7R Serves 486.5357 People

Well 15 Serves 405.4464 People

Riverside Wells

RS 19 Serves 3467.913 People

The total number of people served in the 1-2 mile radius is 7,522.3772 People 

 2-3 Mile Radius Calculation

Speedway Wells

Well 8R Serves 364.9018 People

Well 9 Serves 486.5357 People

Well 10R Serves 486.5357 People

Well 11R Serves 608.1696 People

Well 12 Serves 810.8928 People

Well 13 Serves 810.8928 People

Well 14R Serves 810.8928 People

Riverside Wells

Well RS A Serves 2364.486 People

Well RS B Serves 5254.413 People

Well RS C Serves 7618.899 People

Well RS D Serves 3888.266 People

Well RS 2 Serves 4203.531 People

Well RS 7 Serves 4045.898 People

Well RS 8 Serves 4203.531 People

Well RS 9 Serves 4413.707 People

Well RS 17 Serves 3152.648 People

Well RS 18 Serves 3467.913 People

Well RS 22 Serves 2627.207 People

Well RS 26 Serves 3152.648 People

Well RS 27 Serves 4466.251 People 

Well RS 29 Serves 3152.648 People

White River Wells

Well WR 9 Serves 7356.178 People

The total number of people served in the 2-3 mile radius is 67,747.0452 people
86

** ***3-4Miles Radius Calculation

White River Wells

Well WR 3 Serves 7146.002 People

Well WR 7 Serves 3678.089 People

Well WR 8 Serves 10508.83 People

The total number of people served in the 3-4 mile radius 21,332.921 people

Table 3-12 value of 9093 is multiplied by .1 = 909.3

Potential Contamination Factor Value: 909

Scores for Michigan Plaza

Air Pathway Not Scored

Ground Water Pathway 100.00

Soil Exposure Pathway Not Scored

Surface Water Pathway Not Scored

HRS SITE SCORE 50.00
87

Attachment 2

HRS Scoring and Target Information Showing That Genuine Parts Will Score on its Own
88

WORKSHEET FOR COMPUTING HRS SITE SCORE

For Genuine Parts

S S2

1. Ground Water Migration Pathway Score (Sgw) 

 100.00 10,000.00

2a. Surface Water Overland/Flood Migration Component

(from Table 4-1, line 30)

NS*

2b. Ground Water to Surface Water Migration Component

(from Table 4-25, line 28)

NS

2c. Surface Water Migration Pathway Score (Ssw)

Enter the larger of lines 2a and 2b as the pathway 

score.

NS

3. Soil Exposure Pathway Score (Ss)

(from Table 5-1, line 22)

NS

4. Air Migration Pathway Score (Sa)

(from Table 6-1, line 12)

NS

5. Total of Sgw

2 + Ssw2 + Ss2 + Sa2 10,000.00

6. HRS Site Score

Divide the value on line 5 by 4 and take the square root 50.00

Notes: *NS = Not Scored

 
89

HRS Table 3-1 –Ground Water Migration Pathway Scoresheet (For Genuine Parts)

Factor Categories and Factors Maximum

Value

Value 

Assigned

Likelihood of Release to an Aquifer:

1. Observed Release 550 550

2. Potential to Release:

 2a. Containment 10 NS

 2b. Net Precipitation 10 NS

 2c. Depth to Aquifer 5 NS

 2d. Travel Time 35 NS

 2e. Potential to Release [lines 2a x (2b + 2c + 2d)] 500 NS

5. Likelihood of Release (higher of lines 1 and 2e) 550 550

Waste Characteristics:

4. Toxicity/Mobility (a) 10,000

5. Hazardous Waste Quantity (a) 100

6. Waste Characteristics 100 32

Targets:

7. Nearest Well 50 50

8. Population:

 8a. Level I Concentrations (b) 30

 8b. Level II Concentrations (b) NS

 8c. Potential Contamination (b) 909

 8d. Population (lines 8a + 8b + 8c) (b) 939

9. Resources 5 NS

10. Wellhead Protection Area 20 NS

11. Targets (lines 7 + 8d + 9 + 10) (b) 989

Ground Water Migration Score For An Aquifer:

12. Aquifer Score [(lines 3 x 6 x 11)/82,500]c

 550 x 32 x 989 =17,406,400/82,500 =210.9 100 100.00

Ground Water Migration Pathway Score:

15. Pathway Score (Sgw), 

 (highest value from line 12 for all aquifers evaluated)c 100 100.00

(a) Maximum value applies to waste characteristics category

(b) Maximum value not applicable

c

 Do not round to nearest integer

NS - Not Scored
90

Potential Population

Distance Municipal/Residential 

Well

Population 

Served

Value assigned 

from Table 3-12 References

0-1/4 Miles 23 Residential Wells* 57 53 Ref. 52, pp. 1, 3; 

37, p. 8; Figure 

1-3 of this HRS 

Documentation 

Record

1⁄4- 1⁄2 Miles none Figure 1-8

1⁄2 - 1 Miles 13 Residential Wells** 32 17 Ref. 88, p. 2; 

Figure 1-8

1-2 Miles Speedway wells 2, 3, 

4, 6, 7R, 8R, 10R, 15; 

Riverside Well RS 19 

***

8,373.8147 939 (Ref. 29, pp. 4, 

5; Figure 1-8 of 

this HRS 

Documentation 

Record)

2-3 Miles Speedway Wells 9, 

11R, 12, 13, 14R; 

Riverside Wells RS A, 

RS B, RS C, RS D, RS 

2, RS 7, RS 8, RS 9, 

RS 17, RS 18, RS 22, 

RS 26, RS 27, RS 29; 

White River Wells WR 

9,   

66,895.6077 6778 (Ref. 29, pp. 4, 

5; Figure 1-8 of 

this HRS 

Documentation 

Record)

3-4 Miles White River Wells 3, 7, 

8** ***

21,332.921 1306

Total 9093

*0-1/4 Mile Radius Calculation

• 2.49 People per household (Ref. 144)

2.49 times 23 homes =57 people

**1⁄2 - 1 Mile Radius Calculation 

• 2.49 People per household (Ref. 144)

2.49 times 13 homes = 32.37 people
91

*** 1-2 Mile Radius Calculation (Refs. 138, p. 1; 139, p. 1; Figure 1-5)

Speedway Wells

Well 2 Serves 1,135.25 People

Well 3 Serves 648.7143 People

Well 4 Serves 567.625 People

Well 6 Serves 810.8928 People

Well 7R Serves 486.5357 People

Well 8R Serves 364.9018 People

Well 10R Serves 486.5357 People

Well 15 Serves 405.4464 People

Riverside Wells

RS 19 Serves 3467.913 People

The total number of people served in the1-2 mile radius is 8,373.8147 people 

 2-3 Mile Calculation (Refs. 138, p. 1; 139, p. 1; Figure 1-5)

Speedway Wells

Well 9 Serves 486.5357 People

Well 11R Serves 608.1696 People

Well 12 Serves 810.8928 People

Well 13 Serves 810.8928 People

Well 14R Serves 810.8928 People

Riverside Wells

Well RS A Serves 2364.486 People

Well RS B Serves 5254.413 People

Well RS C Serves 7618.899 People

Well RS D Serves 3888.266 People

Well RS 2 Serves 4203.531 People

Well RS 7 Serves 4045.898 People

Well RS 8 Serves 4203.531 People

Well RS 9 Serves 4413.707 People

Well RS 17 Serves 3152.648 People

Well RS 18 Serves 3467.913 People

Well RS 22 Serves 2627.207 People

Well RS 26 Serves 3152.648 People

Well RS 27 Serves 4466.251 People 

Well RS 29 Serves 3152.648 People

White River Wells

 Well WR 9 Serves 7356.178 People 

The total number of people served in the 2-3 mile radius is 66,895.6077 people
92

** ***3-4 Mile Calculation (Ref. 138, p. 1; Figure 1-5)

White River Wells

Well WR 3 Serves 7146.002 People

Well WR 7 Serves 3678.089 People

Well WR 8 Serves 10508.83 People

The total number of people served in the 3-4 mile radius 21,332.921 people 

Table 3-12 value of 9,093 is multiplied by .1 = 909.3

Potential Contamination Factor Value: 909

Scores for Genuine Parts

Air Pathway Not Scored

Ground Water Pathway 100.00

Soil Exposure Pathway Not Scored

Surface Water Pathway Not Scored

HRS SITE SCORE 50.00