67 proven and potential cases displayed in this spreadsheet

Only the 63 coal ash cases are summarized beginning in row 78

The 4 oil ash cases are at the bottom of the sheet

Site Name # Category Media State Utility Landowner

ThirdParty? Offsite Site Size 

(acres)

Coal 

Ash

FGD 

Solids FSS Other (list) Type

Former 

Mine / 

Quarry?

Liner Liner 

Type LCS Sat. Ash? Year Opened

Year 

Closed

On 

NPL?

Facility 

Closed

Monitoring 

Continues

Salem Acres Site (Massachusetts 

Electric Company) 1 I GW MA Mass. Electric Non-utility

No 

informatio

n

Yes 0.6 CCW no no

sewage sludge, 

tannery wastes, 

MSW

LF No no n/a

No 

informatio

n

1952 1969 Yes Yes No

City of Beverly/Vitale Brothers Fly 

Ash Pit (New England Electric) 2 I GW MA New England Electric Non-utility Yes Yes 18 CCW no no

appliances, 

scrapped autos LF

Sand 

and 

Gravel

no n/a Yes 1950 1975 No No No information

Don Frame Trucking, Inc. Fly Ash 

Landfill (Niagara Mohawk) 3 I GW NY Niagare Mohawk

Non-utility

No 

informatio

n

Yes no 

information CCW no no

other materials 

including yard 

sweepings

LF

No 

informati

on

No 

informati

on

No 

informati

on

No 

informatio

n

No 

informatio

n

No 

informati

on

No No Reportedly

Virginia Electric Power Co. (VEPCO) 

Possum Point 4 I GW VA Dominion Dominion No No 40 RCC no no Oil Ash IMP No no n/a no

No 

informatio

n

No 

informati

on

No Yes No information

PEPCO Morgantown Generating 

Station Faulkner Off-site Disposal 

Facility

5 I GW MD Mirant Mirant No No 181 RCC no no no LF

No 

informati

on

Partial

No 

informati

on

Partial

No 

informatio

n

1970 Active No No Yes

Virginia Power Yorktown Power 

Station Chisman Creek Disposal Site 6 I GW VA Dominion Dominion

No 

informatio

n

Yes 27 CCW no no Pet Coke LF

Sand 

and 

Gravel

no n/a

No 

informatio

n

1957 1974 Yes No Yes

Hyco Lake, Roxboro 7 I SW NC Progress 

Energy

Progress 

Energy No No 3750 CCW no no no IMP No no n/a no 1964 Active No Yes No information

Georgia Power Company, Plant 

Bowen, Cartersville, GA 8 I SW GA Southern Southern No No 245 CCW no no no IMP No no n/a no 1968 Active No No No

Department of Energy - Oak Ridge Y12 Plant Chestnut Ridge Operable 

Unit 2 DOE Oak Ridge Reservation, 

Oak Ridge, Tennessee

9 I SW TN DOE DOE No No 8.5 CCW no no no IMP No no n/a no 1955 1967 Yes No Yes

South Carolina Electric & Gas 

Canadys Plant, South Carolina 10 I GW SC SCANA SCANA No No 175 CCW no no no IMP No no n/a no 1974 Active No Yes Yes

Belews Lake, North Carolina 11 I SW NC Duke Energy Duke Energy No No 3863 CCW no no no IMP No no n/a no 1973 Active No No No information

U.S. Department of Energy 

Savannah River Project, South 

Carolina

12 I SW SC DOE DOE No No no 

information CCW no no no IMP No no n/a no 1952

No 

informati

on

Yes No No information

EPA-HQ-RCRA-2009-0640-DRAFT-0346.xls - 67 Cases Page 1 of 27 Natural Resource Technology, Inc.
67 proven and potential cases displayed in this spreadsheet

Only the 63 coal ash cases are summarized beginning in row 78

The 4 oil ash cases are at the bottom of the sheet

Site Name # Category Media State Utility Landowner

ThirdParty? Offsite Site Size 

(acres)

Coal 

Ash

FGD 

Solids FSS Other (list) Type

Former 

Mine / 

Quarry?

Liner Liner 

Type LCS Sat. Ash? Year Opened

Year 

Closed

On 

NPL?

Facility 

Closed

Monitoring 

Continues

Dairy Power Cooperative E.J. 

Stoneman Generating Station Ash 

Disposal Pond, Wisconsin

13 I GW WI Dairyland Dairyland No No 22 CCW no no no IMP No no n/a Yes 1950 1987 No No Yes

WEPCO Highway 59 Landfill, 

Wisconsin 14 I GW WI We Energies We Energies No Yes 23 CCW no no no LF

Sand 

and 

Gravel

no n/a Yes 1969 1979 No No Yes

Alliant (Formerly Wisconsin Power & 

Light) Nelson Dewey Ash Disposal 

Facility, Wisconsin

15 I GW WI Alliant Alliant No No 24 CCW no no no IMP No no n/a Yes 1958 2001 No No Yes

WEPCO Cedar-Sauk Landfill, 

Wisconsin 16 I GW WI We Energies We Energies No Yes 28 CCW no no no LF

Sand 

and 

Gravel

no n/a No 1969 1979 No No Yes

Wisconsin Electric Power Co. 

(WEPCO) Port Washington Facility, 

Wisconsin (Druecker)

17 I GW WI We Energies We Energies Yes Yes 15 CCW no no no LF Rock no n/a Yes 1948 1971 No No Yes

Lansing Board of Water & Light 

(LBWL) North Lansing Landfill, 

Michigan

18 I GW MI LBWL LBWL No Yes 27 CCW no no no LF

Sand 

and 

Gravel

no n/a Yes 1980 1997 No No Yes

Northern Indiana Public Service 

Corp. (NIPSCO) Yard 520 Landfill 

Site (Brown's Landfill) Township of 

Pines, Porter County, IN

19 I GW IN Nisource Nisource

No 

informatio

n

Yes 45 CCW no no no LF No Partial Clay no 1965 2001 No No Yes

Brandy Branch Reservoir, Texas 20 I SW TX AEP AEP No No 1257 no no no no IMP No no n/a No 1983 Active No No No information

Southwestern Electric Power 

Company Welsh Reservoir, Texas 21 I SW TX AEP AEP No No 1465 CCW no no no IMP No no n/a No 1976 Active No No No information

Texas Utilities Electric Martin Creek 

Reservoir, Texas 22 I SW TX TXU TXU No No 5020 CCW no no no IMP No no n/a No 1974 Active No No No information

Basin Electric Power Cooperative 

W.J. Neal Station Surface 

Impoundment, North Dakota

23 I GW ND Basin Electric 

Power Coop.

Basin Electric 

Power Coop. No No 44 CCW no no no IMP No no n/a no 1955 1988 No Yes No

Cooperative Power 

Association/United Power Coal 

Creek Station Surface 

Impoundments, North Dakota

24 I GW ND Great River 

Energy

Great River 

Energy No No 220 no Yes no

Mill rejects, small 

amounts of 

bottom ash.

IMP No Retrofit Composi

te no 1978 Active No No Yes

K.R. Rezendes South Main Street 

Ash Landfill, Freetown, 

Massachusetts

25 II GW MA PG&E Non-utility

No 

informatio

n

Yes 31.5 CCW no no no LF

Sand 

and 

Gravel

no n/a no 1975 2001 No No No information

oil ash site, see below

AES Creative Resources Weber Ash 

Disposal Site, New York 27 II GW NY AES AES No Yes 12.1 CCW no no no LF No Yes PVC Yes no 1978 2001 No No Yes

Central Hudson Gas and Electric 

Corporation Danskammer Waste 

Management Facility, New York

28 II GW NY Dynegy Dynegy No No no 

information CCW no no no LF

No 

informati

on

No 

informati

on

No 

informati

on

No 

informatio

n

No 

informatio

n

No 

informati

on

No

No 

informati

on

No information

EPA-HQ-RCRA-2009-0640-DRAFT-0346.xls - 67 Cases Page 2 of 27 Natural Resource Technology, Inc.
67 proven and potential cases displayed in this spreadsheet

Only the 63 coal ash cases are summarized beginning in row 78

The 4 oil ash cases are at the bottom of the sheet

Site Name # Category Media State Utility Landowner

ThirdParty? Offsite Site Size 

(acres)

Coal 

Ash

FGD 

Solids FSS Other (list) Type

Former 

Mine / 

Quarry?

Liner Liner 

Type LCS Sat. Ash? Year Opened

Year 

Closed

On 

NPL?

Facility 

Closed

Monitoring 

Continues

C.R. Huntley Fly ash Landfill, New

York 29 II GW NY NRG NRG No No no information CCW no no no LF

No 

informati

on

No 

informati

on

No 

informati

on

No 

informatio

n

No 

informatio

n

No 

informati

on

No

No 

informati

on

No information

Elrama Plant, Pennsylvania 30 II GW PA Reliant Reliant No Yes 22 CCW no

Poz-OTec no LF Coal no n/a No 1979

No 

informati

on

No

No 

informati

on

No information

Tennessee Valley Authority - Bull 

Run Steam Plant, Oak Ridge, 

Tennessee

31 II SW TN TVA TVA No No 49 RCC no no no IMP No no n/a No 1965 Active No No No

Tennessee Valley Authority Widows 

Creek Fossil Fuel Plant, Alabama 32 II GW AL TVA TVA No No 310 CCW no no no IMP No no n/a No 1950 Active No No No

Tennessee Valley Authority Colbert 

Fossil Fuel Plant, Alabama 33 II GW AL TVA TVA No No See Notes CCW no no no IMP No Retrofit Clay no 1975 Active No No Yes

Duke Power Allen Steam Generating 

Plant, North Carolina 34 II GW NC Duke Energy Duke Energy No No 170 CCW no no no IMP No no n/a No 1973 Active No No Yes

Cinergy East Bend Scrubber Sludge 

Landfill, Kentucky 35 II GW KY Duke Energy Duke Energy No No 213 no no Yes bottom ash and mill rejects IMP/LF No Partial n/a No 1981 Active No No Yes

Florida Power and Light Lansing 

Smith Plant, Florida 36 II GW FL Southern Southern No No 172 CCW no no no IMP No no n/a No 1965 Active No No No information

oil ash site, see below

oil ash site, see below

oil ash site, see below

Commonwealth Edison Powerton 

Plant - Mahoney Landfill, Pekin, 

Tazewell County, Illinois

40 II GW IL Midwest 

Generation Uncertain Yes Yes 40 CCW no no no LF

Sand 

and 

Gravel

Yes Poz-OPac Yes 1972 1982 No

No 

informati

on

No information

Xcel Energy/Southern Minnesota 

Municipal Power Agency - Sherburne 

County (Sherco) Generating Plant 

Becker, Minnesota

41 II GW MN Xcel Xcel No No 62 CCW Yes no no IMP No Yes Clay No 1976

No 

informati

on

No

No 

informati

on

No information

Alliant Rock River Ash Disposal 

Facility, Wisconsin 42 II GW WI Alliant Alliant No No 17 CCW no no no LF No no n/a Yes 1954 2007 No No Yes

Michigan City Site, Michigan City, 

Indiana 43 II GW IN Nisource Nisource No No no information CCW no no no IMP

No 

informati

on

No 

informati

on

No 

informati

on

No 

informatio

n

No 

informatio

n

No 

informati

on

No

No 

informati

on

No information

Bailly Generating Station, Indiana 44 II GW IN Nisource Nisource No No 14 CCW no no no IMP/LF No Retrofit HDPE no 1962 Active No No Yes

Alliant Edgewater 1-4 Ash Disposal 

Site, Wisconsin 45 II GW WI Alliant Alliant No No 17 CCW no no no LF No no n/a Yes 1969 1986 No No Yes

Wisconsin Power Supply Company 

(WPSC) Pulliam Ash Disposal Site, 

Wisconsin

46 II GW WI Integrys Integris No No 80 CCW no no no LF No no n/a Yes 1971 1986 No No Yes

Central Illinois Light Co. Duck Creek 

Station , Illinois 47 II GW IL Ameren Ameren No No 140 CCW no no no IMP No no n/a no

No 

informatio

n

2009 No No Yes

Illinois Power Company Hennepin 

Power Station Illinois 48 II GW IL Dynegy Midwest Generation

Dynegy Midwest 

Generation No No 68 CCW no no no IMP No no n/a No 1952 1996 No No Yes

Illinois Power Company Havanna 

Power Plant, Illinois 49 II GW IL Dynegy Midwest Generation

Dynegy Midwest 

Generation No No 30 CCW no no no IMP No no n/a No 1977 1994 No Yes No

EPA-HQ-RCRA-2009-0640-DRAFT-0346.xls - 67 Cases Page 3 of 27 Natural Resource Technology, Inc.
67 proven and potential cases displayed in this spreadsheet

Only the 63 coal ash cases are summarized beginning in row 78

The 4 oil ash cases are at the bottom of the sheet

Site Name # Category Media State Utility Landowner

ThirdParty? Offsite Site Size 

(acres)

Coal 

Ash

FGD 

Solids FSS Other (list) Type

Former 

Mine / 

Quarry?

Liner Liner 

Type LCS Sat. Ash? Year Opened

Year 

Closed

On 

NPL?

Facility 

Closed

Monitoring 

Continues

Dairyland Power Alma On-Site Fly 

Ash Landfill, Wisconsin 50 II GW WI Dairyland Dairyland No No 56 CCW no no no LF No no n/a Yes 1947 1986 No No Yes

Dairyland Power Alma Off-Site Fly 

Ash Landfill, Wisconsin 51 II GW WI Dairyland Dairyland No Yes 29 CCW no no no LF No Yes Clay no 1983 2007 No No Yes

Illinois Power Vermillion Power 

Station, Illinois 52 II GW IL Dynegy Midwest Generation

Dynegy Midwest 

Generation No No 12 CCW no no no IMP No Yes See notes no 1989 Active No No Yes

Central Illinois Public Service 

Company Hutsonville Power Station, 

Illinois

53 II GW IL Ameren Ameren No No 22 CCW no no no IMP No no n/a Yes 1968 2000 No No Yes

Illinois Power Company Wood River 

Power Station, Illinois 54 II GW IL Dynegy Midwest Generation

Dynegy Midwest 

Generation No No 60 CCW no no no IMP No Partial See notes Partial no 1978 Active No No Yes

R.M. Schahfer Generating Station, 

IN 55 II GW IN Nisource Nisource No No 230 CCW no Yes no LF No Partial Composite Partial no 1984 Active No No Yes

Coffeen/White & Brewer Trucking Fly 

Ash Landfill, Illinois 56 II GW IL Ameren Non-utility yes Yes 40 CCW no no no LF No no n/a Yes 1977 1997 No No Yes

Southern Indiana Gas and Electric 

Company (SIGECO) A.B. Brown 

Generating Station, Indiana

57 II GW IN Vectren Vectren No No 130 no yes no no LF No Partial Clay

No 

informatio

n

1979

No 

informati

on

No No Yes

Cincinnati Gas & Electric Co. 

Miamiview Landfill, Ohio 58 II GW OH Duke Energy Duke Energy No Yes 100 CCW no no no LF

Sand 

and 

Gravel

Yes Clay no 1983 1997 No Yes No

Indiana Power & Light Petersburg 

Generating Station, Indiana 59 II GW IN AES/IPL AES/IPL No No 75 no no

Poz-OTec no LF No no n/a no 1976 Active No No No information

Hoosier Energy Merom Generating 

Station Coal Combustion Waste 

Landfill, Indiana

60 II GW IN Hoosier Energy Hoosier Energy No No 190 CCW no

Poz-OTec no LF No Partial Clay Yes 1982 Active No No Yes

Cinergy W.C. Beckjord Station, Ohio 61 II GW OH Duke Energy Duke Energy No No 34 CCW no no no IMP No no n/a no 1956 1985 No No Yes

Lemberger Landfill, Wisconsin 62 II GW WI Manitowoc Pub. 

Utilities Non-utility

No 

informatio

n

Yes 21 CCW no no MSW LF

Sand 

and 

Gravel

no n/a

No 

informatio

n

1940 1976 Yes No Yes

Conesville Fixed FGD Sludge 

Landfill, Ohio 63 II GW OH AEP AEP No No 50 no no Yes No LF No no n/a no 1976 1988 No Yes No

Muscatine County Landfill, Iowa 64 II GW IA No information Non-utility

No 

informatio

n

Yes no 

information CCW no no No information LF

No 

informati

on

no n/a Yes 1964 1973 No

No 

informati

on

No information

Dave Johnston Power Plant, 

Wyoming 65 II GW WY Pacificorp Pacificorp No No 50 CCW no no no LF No no n/a No

No 

informatio

n

No 

informati

on

No

No 

informati

on

No information

EPA-HQ-RCRA-2009-0640-DRAFT-0346.xls - 67 Cases Page 4 of 27 Natural Resource Technology, Inc.
67 proven and potential cases displayed in this spreadsheet

Only the 63 coal ash cases are summarized beginning in row 78

The 4 oil ash cases are at the bottom of the sheet

Site Name # Category Media State Utility Landowner

ThirdParty? Offsite Site Size 

(acres)

Coal 

Ash

FGD 

Solids FSS Other (list) Type

Former 

Mine / 

Quarry?

Liner Liner 

Type LCS Sat. Ash? Year Opened

Year 

Closed

On 

NPL?

Facility 

Closed

Monitoring 

Continues

Montana-Dakota Utilities R.M. 

Heskett Station, North Dakota 66 II GW ND MDU Resources MDU Resources No No 15 CCW no no no LF No no n/a no 1954 1989 No No Yes

Arizona Public Service Co. Cholla 

Steam Electric Generating Station, 

Arizona

67 II GW AZ APS APS No No no 

information CCW no no no IMP

No 

informati

on

No 

informati

on

No 

informati

on

No 

informatio

n

No 

informatio

n

No 

informati

on

No No No information

EPA-HQ-RCRA-2009-0640-DRAFT-0346.xls - 67 Cases Page 5 of 27 Natural Resource Technology, Inc.
67 proven and potential cases displayed in this spreadsheet

Only the 63 coal ash cases are summarized beginning in row 78

The 4 oil ash cases are at the bottom of the sheet

Site Name

Salem Acres Site (Massachusetts 

Electric Company)

City of Beverly/Vitale Brothers Fly 

Ash Pit (New England Electric)

Don Frame Trucking, Inc. Fly Ash 

Landfill (Niagara Mohawk)

Virginia Electric Power Co. (VEPCO) 

Possum Point

PEPCO Morgantown Generating 

Station Faulkner Off-site Disposal 

Facility

Virginia Power Yorktown Power 

Station Chisman Creek Disposal Site

Hyco Lake, Roxboro

Georgia Power Company, Plant 

Bowen, Cartersville, GA

Department of Energy - Oak Ridge Y12 Plant Chestnut Ridge Operable 

Unit 2 DOE Oak Ridge Reservation, 

Oak Ridge, Tennessee

South Carolina Electric & Gas 

Canadys Plant, South Carolina

Belews Lake, North Carolina

U.S. Department of Energy 

Savannah River Project, South 

Carolina

Potential for 

Receptors (Via 

GW)

Number of 

Potential 

Receptors

Any 

Exceedance

Offsite 

Exceedance?

MCL 

Exceedance?

Other 

Exceedance?

Receptor & 

Exceedance

Receptor & 

Offsite

Receptor & 

Offsite MCL

Receptor & 

Onsite

Receptor & 

Onsite MCL

Remediation 

Performed Cap CCP Removal Alt. GW Supply GW Extraction Barrier Wall

No 0 0 no no 0 0 0 0 0 Yes No Yes No No No

Yes 5 1 0 Onsite Onsite 1 0 0 1 1 Yes No Yes No No No

Yes No information 1 1 no Offsite 1 1 0 0 0 Yes Clay No 1 well No No

No 0 0 0 no no 0 0 0 0 0 Yes No Yes No No No

Yes 1 1 0 Onsite Onsite 1 0 0 1 1 Yes Yes No No No Yes

Yes 55 1 1 Offsite Offsite 1 1 1 0 0 Yes Soil No 55 homes Yes No

n/a 0 0 no no 0 0 0 0 0 Yes No No No No No

n/a 0 0 no no 0 0 0 0 0 Yes No Yes No No No

No 1 0 Onsite Onsite 0 0 0 0 0 Yes No No No No No

Yes 3 1 0 Onsite Onsite 1 0 0 1 1 Yes No Partial No No Yes

n/a 0 0 no no 0 0 0 0 0 Yes No No No No No

No 0 0 no no 0 0 0 0 0 No information

EPA-HQ-RCRA-2009-0640-DRAFT-0346.xls - 67 Cases Page 6 of 27 Natural Resource Technology, Inc.
67 proven and potential cases displayed in this spreadsheet

Only the 63 coal ash cases are summarized beginning in row 78

The 4 oil ash cases are at the bottom of the sheet

Site Name

Dairy Power Cooperative E.J. 

Stoneman Generating Station Ash 

Disposal Pond, Wisconsin

WEPCO Highway 59 Landfill, 

Wisconsin

Alliant (Formerly Wisconsin Power & 

Light) Nelson Dewey Ash Disposal 

Facility, Wisconsin

WEPCO Cedar-Sauk Landfill, 

Wisconsin

Wisconsin Electric Power Co. 

(WEPCO) Port Washington Facility, 

Wisconsin (Druecker)

Lansing Board of Water & Light 

(LBWL) North Lansing Landfill, 

Michigan

Northern Indiana Public Service 

Corp. (NIPSCO) Yard 520 Landfill 

Site (Brown's Landfill) Township of 

Pines, Porter County, IN

Brandy Branch Reservoir, Texas

Southwestern Electric Power 

Company Welsh Reservoir, Texas

Texas Utilities Electric Martin Creek 

Reservoir, Texas

Basin Electric Power Cooperative 

W.J. Neal Station Surface 

Impoundment, North Dakota

Cooperative Power 

Association/United Power Coal 

Creek Station Surface 

Impoundments, North Dakota

K.R. Rezendes South Main Street 

Ash Landfill, Freetown, 

Massachusetts

oil ash site, see below

AES Creative Resources Weber Ash 

Disposal Site, New York

Central Hudson Gas and Electric 

Corporation Danskammer Waste 

Management Facility, New York

Potential for 

Receptors (Via 

GW)

Number of 

Potential 

Receptors

Any 

Exceedance

Offsite 

Exceedance?

MCL 

Exceedance?

Other 

Exceedance?

Receptor & 

Exceedance

Receptor & 

Offsite

Receptor & 

Offsite MCL

Receptor & 

Onsite

Receptor & 

Onsite MCL

Remediation 

Performed Cap CCP Removal Alt. GW Supply GW Extraction Barrier Wall

Yes 50 1 1 Offsite Offsite 1 1 1 0 0 Yes Clay Partial

1 village well 

and some 

private wells

No No

Yes 50 1 1 no Offsite 1 1 0 0 0 Yes PVC Partial 14 wells No No

Yes 2 1 0 Onsite Onsite 1 0 0 1 1 Yes GCL No No No No

Yes 2 1 1 Onsite Offsite 1 1 0 0 1 Yes PVC No No Yes No

Yes 30 1 0 no Onsite 1 0 0 1 0 Yes PVC No 1 well No No

No 1 1 Onsite Offsite 0 0 0 0 0 Yes Soil No No Yes Yes

Yes 340 1 1 Offsite Offsite 1 1 1 0 0 Yes Clay No 340 wells No No

n/a 0 0 no no 0 0 0 0 0 Yes No No No No No

n/a 0 0 no no 0 0 0 0 0 Yes No No No No No

n/a 0 0 no no 0 0 0 0 0 Yes No No No No No

Yes 5 1 0 Onsite Onsite 1 0 0 1 1 Yes Clay Partial No No No

No 1 0 Onsite Onsite 0 0 0 0 0 Yes No No No No No

No 1 0 Onsite no 0 0 0 0 0 Yes Partial No No No No

Yes 15 1 0 no Onsite 1 0 0 1 0 Yes LLDPE No No No No

No 1 0 no Onsite 0 0 0 0 0 No information

EPA-HQ-RCRA-2009-0640-DRAFT-0346.xls - 67 Cases Page 7 of 27 Natural Resource Technology, Inc.
67 proven and potential cases displayed in this spreadsheet

Only the 63 coal ash cases are summarized beginning in row 78

The 4 oil ash cases are at the bottom of the sheet

Site Name

C.R. Huntley Fly ash Landfill, New

York

Elrama Plant, Pennsylvania

Tennessee Valley Authority - Bull 

Run Steam Plant, Oak Ridge, 

Tennessee

Tennessee Valley Authority Widows 

Creek Fossil Fuel Plant, Alabama

Tennessee Valley Authority Colbert 

Fossil Fuel Plant, Alabama

Duke Power Allen Steam Generating 

Plant, North Carolina

Cinergy East Bend Scrubber Sludge 

Landfill, Kentucky

Florida Power and Light Lansing 

Smith Plant, Florida

oil ash site, see below

oil ash site, see below

oil ash site, see below

Commonwealth Edison Powerton 

Plant - Mahoney Landfill, Pekin, 

Tazewell County, Illinois

Xcel Energy/Southern Minnesota 

Municipal Power Agency - Sherburne 

County (Sherco) Generating Plant 

Becker, Minnesota

Alliant Rock River Ash Disposal 

Facility, Wisconsin

Michigan City Site, Michigan City, 

Indiana

Bailly Generating Station, Indiana

Alliant Edgewater 1-4 Ash Disposal 

Site, Wisconsin

Wisconsin Power Supply Company 

(WPSC) Pulliam Ash Disposal Site, 

Wisconsin

Central Illinois Light Co. Duck Creek 

Station , Illinois

Illinois Power Company Hennepin 

Power Station Illinois

Illinois Power Company Havanna 

Power Plant, Illinois

Potential for 

Receptors (Via 

GW)

Number of 

Potential 

Receptors

Any 

Exceedance

Offsite 

Exceedance?

MCL 

Exceedance?

Other 

Exceedance?

Receptor & 

Exceedance

Receptor & 

Offsite

Receptor & 

Offsite MCL

Receptor & 

Onsite

Receptor & 

Onsite MCL

Remediation 

Performed Cap CCP Removal Alt. GW Supply GW Extraction Barrier Wall

No 1 0 Onsite Onsite 0 0 0 0 0 No information

No 0 0 no no 0 0 0 0 0 No information

No 1 0 no Onsite 0 0 0 0 0 Yes No No No No No

No 0 0 no no 0 0 0 0 0 No

No 1 0 no Onsite 0 0 0 0 0 Yes No No No No No

No 0 0 no no 0 0 0 0 0 No

No 1 0 no Onsite 0 0 0 0 0 No

No 0 0 no no 0 0 0 0 0 No

No 1 0 no Onsite 0 0 0 0 0 No information

No 1 0 no Onsite 0 0 0 0 0 No information

No 1 0 Onsite Onsite 0 0 0 0 0 Yes Soil No No No No

No 1 0 Onsite no 0 0 0 0 0 No information

Yes 20 1 1 Onsite Offsite 1 1 0 0 1 Yes No Yes No No No

Yes 20 1 0 no Onsite 1 0 0 1 0 Yes Clay No No No No

No 1 0 no Onsite 0 0 0 0 0 Yes Soil No No No No

No 1 0 no Onsite 0 0 0 0 0 Pending

No 1 0 no Onsite 0 0 0 0 0 Yes No No No No No

No 1 0 no Onsite 0 0 0 0 0 Yes Soil No No No No

EPA-HQ-RCRA-2009-0640-DRAFT-0346.xls - 67 Cases Page 8 of 27 Natural Resource Technology, Inc.
67 proven and potential cases displayed in this spreadsheet

Only the 63 coal ash cases are summarized beginning in row 78

The 4 oil ash cases are at the bottom of the sheet

Site Name

Dairyland Power Alma On-Site Fly 

Ash Landfill, Wisconsin

Dairyland Power Alma Off-Site Fly 

Ash Landfill, Wisconsin

Illinois Power Vermillion Power 

Station, Illinois

Central Illinois Public Service 

Company Hutsonville Power Station, 

Illinois

Illinois Power Company Wood River 

Power Station, Illinois

R.M. Schahfer Generating Station, 

IN

Coffeen/White & Brewer Trucking Fly 

Ash Landfill, Illinois

Southern Indiana Gas and Electric 

Company (SIGECO) A.B. Brown 

Generating Station, Indiana

Cincinnati Gas & Electric Co. 

Miamiview Landfill, Ohio

Indiana Power & Light Petersburg 

Generating Station, Indiana

Hoosier Energy Merom Generating 

Station Coal Combustion Waste 

Landfill, Indiana

Cinergy W.C. Beckjord Station, Ohio

Lemberger Landfill, Wisconsin

Conesville Fixed FGD Sludge 

Landfill, Ohio

Muscatine County Landfill, Iowa

Dave Johnston Power Plant, 

Wyoming

Potential for 

Receptors (Via 

GW)

Number of 

Potential 

Receptors

Any 

Exceedance

Offsite 

Exceedance?

MCL 

Exceedance?

Other 

Exceedance?

Receptor & 

Exceedance

Receptor & 

Offsite

Receptor & 

Offsite MCL

Receptor & 

Onsite

Receptor & 

Onsite MCL

Remediation 

Performed Cap CCP Removal Alt. GW Supply GW Extraction Barrier Wall

No 1 0 no Onsite 0 0 0 0 0 Yes Clay No No No No

Yes 6 1 0 no Onsite 1 0 0 1 0 Yes Clay No No No No

No 0 0 no no 0 0 0 0 0 No

No 1 0 no Onsite 0 0 0 0 0 Pending HDPE No No Yes No

No 1 0 no Onsite 0 0 0 0 0 Yes No Yes No No No

No 1 0 no Onsite 0 0 0 0 0 Yes Geomembrane No No No No

No 1 0 Onsite Onsite 0 0 0 0 0 Yes Clay No No No No

Yes 1 1 0 Onsite Onsite 1 0 0 1 1 Yes No No No No Yes

No 1 0 no Onsite 0 0 0 0 0 Yes Clay No No No No

No 0 0 no no 0 0 0 0 0 No

No 1 0 Onsite Onsite 0 0 0 0 0 Yes Soil No No See Notes No

Yes 30 1 0 Onsite Onsite 1 0 0 1 1 Yes No No No Yes No

Yes 23 0 0 no no 0 0 0 0 0 Yes Yes No No Yes Yes

No 1 0 Onsite Onsite 0 0 0 0 0 Yes Clay No No No No

Yes 8 1 0 no Onsite 1 0 0 1 0 No information

No 0 0 no no 0 0 0 0 0 No information

EPA-HQ-RCRA-2009-0640-DRAFT-0346.xls - 67 Cases Page 9 of 27 Natural Resource Technology, Inc.
67 proven and potential cases displayed in this spreadsheet

Only the 63 coal ash cases are summarized beginning in row 78

The 4 oil ash cases are at the bottom of the sheet

Site Name

Montana-Dakota Utilities R.M. 

Heskett Station, North Dakota

Arizona Public Service Co. Cholla 

Steam Electric Generating Station, 

Arizona

Potential for 

Receptors (Via 

GW)

Number of 

Potential 

Receptors

Any 

Exceedance

Offsite 

Exceedance?

MCL 

Exceedance?

Other 

Exceedance?

Receptor & 

Exceedance

Receptor & 

Offsite

Receptor & 

Offsite MCL

Receptor & 

Onsite

Receptor & 

Onsite MCL

Remediation 

Performed Cap CCP Removal Alt. GW Supply GW Extraction Barrier Wall

Yes 2 1 0 Onsite Onsite 1 0 0 1 1 Yes Clay No No No No

No 0 0 no no 0 0 0 0 0 No information

EPA-HQ-RCRA-2009-0640-DRAFT-0346.xls - 67 Cases Page 10 of 27 Natural Resource Technology, Inc.
67 proven and potential cases displayed in this spreadsheet

Only the 63 coal ash cases are summarized beginning in row 78

The 4 oil ash cases are at the bottom of the sheet

Site Name

Salem Acres Site (Massachusetts 

Electric Company)

City of Beverly/Vitale Brothers Fly 

Ash Pit (New England Electric)

Don Frame Trucking, Inc. Fly Ash 

Landfill (Niagara Mohawk)

Virginia Electric Power Co. (VEPCO) 

Possum Point

PEPCO Morgantown Generating 

Station Faulkner Off-site Disposal 

Facility

Virginia Power Yorktown Power 

Station Chisman Creek Disposal Site

Hyco Lake, Roxboro

Georgia Power Company, Plant 

Bowen, Cartersville, GA

Department of Energy - Oak Ridge Y12 Plant Chestnut Ridge Operable 

Unit 2 DOE Oak Ridge Reservation, 

Oak Ridge, Tennessee

South Carolina Electric & Gas 

Canadys Plant, South Carolina

Belews Lake, North Carolina

U.S. Department of Energy 

Savannah River Project, South 

Carolina

Remedial Activities Mitigation Notes

Approximately 11,000 cubic yards of fly 

ash removed from the site in 1995 and 

about 1,000 cubic yards of fly ash from 

the adjacent wetland in 1999. Interim 

remedial actions in the 1980s included 

capping the wastes and constructing 

slurry walls. Remediat

235-acre landfill with a small fly ash pile; listed on NPL for 

contaminated sludge ponds, but these contained other wastes. 

Removed from NPL list in 2001.

Fly ash removed, site redesigned to 

protect wetlands

Fly ash migrated down a stream to Wenham Lake, and was 

reportedly removed. No water quality exceedances reported at 

the water treatment plant that draws from the lake. Closure 

request submitted in 2007

A water supply well was abandoned 

and the building connected to a public 

water supply. It is reported that the NY 

State Department of Environmental 

Conservation (NYSDEC) required the 

landfill be capped with 10-7 clay

Solids were dredged from the unlined 

pond and placed in a second lined 

facility.

Remedial measures at the site included 

closure and capping of older units 

(1996), installation of liners in

newer units (1993), installation of a 

slurry wall to prevent ground water 

migration (1994), and rehabilitation of a 

portion of a stream (1995).

Remediation included a groundwater 

collection and treatment system, 

construction of a low-permeability soil 

cap, a soil cover, alternate water 

supply for 55 nearby homes, and 

relocating a portion of the tributary. 

Changed from wet to dry ash handling 

system. All fish advisories removed in 

2001.

Vacuumed ash from the creek, grouted 

and filled the sinkhole, and grouted 

portions of the dike.

Stabilized ash pond dam, 

reconstructed wetlands. Completed 

under USEPA ROD

Plant converted to dry ash 

management in 1990.

The filled coal ash pond (FCAP) is one of many operable units 

comprising the Oak Ridge NPL site. 

About 80% of the ash was mined from 

the pond for beneficial reuse, and a 

slurry wall was installed in 1996. A 

dewatering system was added in 2007.

A slurry wall was also constructed at 

the pond that replaced the pond that is 

subject of the damage case report.

Dry ash handling system introduced in 

1984 and ash basin discharge was 

rerouted so it did not enter the lake. 

Fly ash currently managed in a landfill.

Fish advisory for selenium rescinded in 2000

Note: This facility had no contaminant directly related to its case, 

it was considered due to impact on the local species. Other 

contaminants detected include radionuclide, VOCs, pesticides, 

herbicides, nitrates, and metals.

EPA-HQ-RCRA-2009-0640-DRAFT-0346.xls - 67 Cases Page 11 of 27 Natural Resource Technology, Inc.
67 proven and potential cases displayed in this spreadsheet

Only the 63 coal ash cases are summarized beginning in row 78

The 4 oil ash cases are at the bottom of the sheet

Site Name

Dairy Power Cooperative E.J. 

Stoneman Generating Station Ash 

Disposal Pond, Wisconsin

WEPCO Highway 59 Landfill, 

Wisconsin

Alliant (Formerly Wisconsin Power & 

Light) Nelson Dewey Ash Disposal 

Facility, Wisconsin

WEPCO Cedar-Sauk Landfill, 

Wisconsin

Wisconsin Electric Power Co. 

(WEPCO) Port Washington Facility, 

Wisconsin (Druecker)

Lansing Board of Water & Light 

(LBWL) North Lansing Landfill, 

Michigan

Northern Indiana Public Service 

Corp. (NIPSCO) Yard 520 Landfill 

Site (Brown's Landfill) Township of 

Pines, Porter County, IN

Brandy Branch Reservoir, Texas

Southwestern Electric Power 

Company Welsh Reservoir, Texas

Texas Utilities Electric Martin Creek 

Reservoir, Texas

Basin Electric Power Cooperative 

W.J. Neal Station Surface 

Impoundment, North Dakota

Cooperative Power 

Association/United Power Coal 

Creek Station Surface 

Impoundments, North Dakota

K.R. Rezendes South Main Street 

Ash Landfill, Freetown, 

Massachusetts

oil ash site, see below

AES Creative Resources Weber Ash 

Disposal Site, New York

Central Hudson Gas and Electric 

Corporation Danskammer Waste 

Management Facility, New York

Remedial Activities Mitigation Notes

Discontinued use; installed cover (1-

foot clay, 1 foot sand, and 6-inch 

topsoil) in 1989. Consolidated ash to 

10-acre area away from residences. 

Replaced village well and provided 

village water to affected residences. 

Saturated ash excavation and 

placement of a PVC cap over the 

landfill completed in 2000/2001. 

Alternative drinking water source 

(municipal water supply) was provided 

to approximately 10 homes and our 

commercial buildings.

Coal ash was removed from a one-acrea area where it was 

known to be placed below water table.

Capping began in 1997 Changed to dry ash disposal in 1996. 

A clay barrier cap was placed over the 

site in 1982, a groundwater extraction 

system was operated at the site from 

1984 until 1997. The cap was 

upgraded to with a geosynthetic 

material (30-mil PVC) and an upper 

drainage layer in 1997.

Site Capped. One water supply 

replaced.

Contaminated private well was located about 250 feet from fill 

area.

Slurry wall with gradient control system. 

Soil cap planned but not constructed 

as of 2009.

Remediation system for an adjacient superfund site appears to 

be capturing downgradient plume. Site is in urban area serviced 

by municipal water; no potable wells within one mile.

Alternative groundwater supplies 

provided between 2003 and 2005. In 

2006/2007, both portions of the landfill 

were capped with 2-feet of clay 

covered by topsoil, in accordance with 

IDEM requirements. 

Discharge from the coal pile was 

diverted to the FGD system to mitigate 

any effects that discharge may have 

had on the fish population in the 

reservoir.

Site should not be a CCW damage case because neither CCW or 

effluent from a CCW pond was ever directed to this cooling water 

resevoir.

Eliminated discharge of efflunet from 

fly ash impoundments to reservoir.

Eliminated discharge of efflunet from 

fly ash impoundments to reservoir; 

lined some ponds.

In 1990, ash was consolidated to a 22-

acre footprint and then capped with 18-

inch engineered clay cover and an 18-

inch layer of top soil, which was seeded 

and mulched. 

8/31/95 report - As attributable to landfill, but Cd, Cu, Pb in city 

well not tied to site (Zn also in city well). Also, USEPA Reg. VIII 

Rem Site Ass Decision (3-3-00) stated no Assessment required

The ponds were relined with a 

composite geosynthetic/clay liners 

between 1987 and 1993.

A partial cap of unknown design is 

reported for this site.

MADEP reportedly required additional site monitoring wells and 

surface water sampling when the monitoring program was 

modified. The property owner is currently proposing to build a 

retail complex over the site.

Closed and capped in 2001. Cap 

features a 60-mil LLDPE barrier 

between 120 mil geotextile layers.

EPA-HQ-RCRA-2009-0640-DRAFT-0346.xls - 67 Cases Page 12 of 27 Natural Resource Technology, Inc.
67 proven and potential cases displayed in this spreadsheet

Only the 63 coal ash cases are summarized beginning in row 78

The 4 oil ash cases are at the bottom of the sheet

Site Name

C.R. Huntley Fly ash Landfill, New

York

Elrama Plant, Pennsylvania

Tennessee Valley Authority - Bull 

Run Steam Plant, Oak Ridge, 

Tennessee

Tennessee Valley Authority Widows 

Creek Fossil Fuel Plant, Alabama

Tennessee Valley Authority Colbert 

Fossil Fuel Plant, Alabama

Duke Power Allen Steam Generating 

Plant, North Carolina

Cinergy East Bend Scrubber Sludge 

Landfill, Kentucky

Florida Power and Light Lansing 

Smith Plant, Florida

oil ash site, see below

oil ash site, see below

oil ash site, see below

Commonwealth Edison Powerton 

Plant - Mahoney Landfill, Pekin, 

Tazewell County, Illinois

Xcel Energy/Southern Minnesota 

Municipal Power Agency - Sherburne 

County (Sherco) Generating Plant 

Becker, Minnesota

Alliant Rock River Ash Disposal 

Facility, Wisconsin

Michigan City Site, Michigan City, 

Indiana

Bailly Generating Station, Indiana

Alliant Edgewater 1-4 Ash Disposal 

Site, Wisconsin

Wisconsin Power Supply Company 

(WPSC) Pulliam Ash Disposal Site, 

Wisconsin

Central Illinois Light Co. Duck Creek 

Station , Illinois

Illinois Power Company Hennepin 

Power Station Illinois

Illinois Power Company Havanna 

Power Plant, Illinois

Remedial Activities Mitigation Notes

The only source of information identified for this facility was the 

1988 Report to Congress

In the mid-1970s, repairs were made 

and wastewater was routed through the 

impoundment’s NPDES permitted 

outfall.

Exceedances were reportedly in a ditch adjacient to the 

impoundment.

Exceedance was reportedly in an ungradient well.

Remediation listed is for metal cleaning 

waste basin: discontinued using small 

pond (which is not an ash 

impoundment) for acid cleaning in 

1990s.

Have abandoned known leaking ponds 

and put in clay liner to catch coal pile 

runoff

The damage case report is based either on concentrations near a 

2-acre, clay-lined basin used to store metal cleaning wastes or a 

well screened in coal ash; inclusion of this facility as a damage 

case on this basis is questionable. Regardless, monitoring

This facility does not appear to belong on the damage case list 

based on low ash indicator concentrations in groundwater.

Installed seepage collection to address 

seeps in some areas around landfill.

The damage case attributed groundwater issues at this facility to 

the scrubber sludge landfill but a follow-up assessment performed 

by the utility identified the impoundment as the source of the 

issues.

Groundwater is locally saline at depth

The only source of information identified for this facility was the 

1988 Report to Congress

The only source of information identified for this facility was the 

1988 Report to Congress

 Landfill capping began 2004 and 

finished 2007, included 2 feet of soil 

with 6-inch topsoil cover.

Plant converted to natural gas in 2000

In 1978, the impoundments were 

dredged, then lined with HDPE over 

clay

There are also two small landfills on site that do not appear th be 

the basis of the damage case assessment, both landfills are 

closed and capped.

Landfill closed with clay cap in 1986 

after construction of a new, upgraded 

landfill.

removed from service and replaced 

with lined facility.

The impoundments were removed from 

service and dewatered in 1996. Ash is 

now sluiced to a lined coal ash 

impoundment.

There were two seperate unlined impoundments at this site. 

Concentrations of boron and sulfate at the 38-acre east 

impoundment rapidly decreased in most monitoring wells after the 

facility was dewatered. Concentrations have decreased more 

slowly at the 

The impoundment was capped with 

native soils in 1994. 

Ash is now sluiced to a lined coal ash 

impoundment.

Site closure obtained in 2009. There are no groundwater quality 

exceedances associated with the lined impoundment.

EPA-HQ-RCRA-2009-0640-DRAFT-0346.xls - 67 Cases Page 13 of 27 Natural Resource Technology, Inc.
67 proven and potential cases displayed in this spreadsheet

Only the 63 coal ash cases are summarized beginning in row 78

The 4 oil ash cases are at the bottom of the sheet

Site Name

Dairyland Power Alma On-Site Fly 

Ash Landfill, Wisconsin

Dairyland Power Alma Off-Site Fly 

Ash Landfill, Wisconsin

Illinois Power Vermillion Power 

Station, Illinois

Central Illinois Public Service 

Company Hutsonville Power Station, 

Illinois

Illinois Power Company Wood River 

Power Station, Illinois

R.M. Schahfer Generating Station, 

IN

Coffeen/White & Brewer Trucking Fly 

Ash Landfill, Illinois

Southern Indiana Gas and Electric 

Company (SIGECO) A.B. Brown 

Generating Station, Indiana

Cincinnati Gas & Electric Co. 

Miamiview Landfill, Ohio

Indiana Power & Light Petersburg 

Generating Station, Indiana

Hoosier Energy Merom Generating 

Station Coal Combustion Waste 

Landfill, Indiana

Cinergy W.C. Beckjord Station, Ohio

Lemberger Landfill, Wisconsin

Conesville Fixed FGD Sludge 

Landfill, Ohio

Muscatine County Landfill, Iowa

Dave Johnston Power Plant, 

Wyoming

Remedial Activities Mitigation Notes

2-foot clay cap with 6-inch topsoil cover 

placed on the landfill in 1986. 

Ash is now placed in a facility with a 

synthetic liner and a leachate collection 

system

Ash was originally slurried to the landfill.

Constructed over a shale bedrock unit which has very low

hydraulic conductivity; slurry walls inside the berms, built at time 

of construction, are keyed into the bedrock.

Facility is in an area of extensive former coal mining activity.

The utility is planning construction of a 

synthetic cap and a trench to intercept 

impacted groundwater.

In 1997-1998, ash was excavated from 

two unlined cells and lined cells were 

constructed in those areas. 

In 1999 the plant converted to a dry 

ash handling system and most ash is 

reportedly sold for beneficial reuse.

Site reclosed in 1998/1999 with 

membrane cap

Built new landfill cell (1997) with 

composite liner and leachate collection 

system 

Cells A-D were capped from 1980 to 

1990, Cell E was capped in 1997. 

Caps consist of 3 feet of clay with 

hydraulic conductivity of 10-7 cm/s.

No aquifer at this site. Groundwater monitored in clay or sand 

seams.

Slurry wall was installed in the NE 

corner of the original landfill in late 

1987. Groundwater pumps have been 

installed in two wells in the NE corner 

for the last 10 years.

Closed and capped in 1996

Area 2 was constructed with an 

underdrain to intercept in-flowing 

perched GW; the company also 

installed a toe-drain at Area 1 to 

intercept perched GW seeping from 

landfill.

Modified ash hauling methods in Area 

2 to prevent incidental ash to a 

perimeter ditch.

There are two ash landfills at this site, Area 1 is a closed 101 

acre site constructed in 1982, and Area 2A is an active 89 acre 

site constructed in 1994 which will soon be replaced by a new

landfill that will also have a liner and underdrain system. The

Ash sluicing ceased in 1985. 

Interceptor well installed 1993 to 

prohibit sulfate plume from reaching offsite public supply wells. The one public 

supply well that was located on-site has 

been abandoned.

The receptor count includes a municipal water supply well field.

Remediation completed by September 

1996 and included wastes relocation; 

landfill capping; slurry wall 

construction; leachate collection and 

groundwater treatment system 

installations; and implementing 

groundwater monitoring and use 

restrictions.

Former gravel pit, was used as an open dump from 1940 to 1970. 

In 1976 and 1977, an estimated 1,750 to 2,500 cubic yards of fly 

ash was transported to the site monthly and used as daily cover.

2-foot clay cap with 6-inch topsoil cover 

placed on the landfill in 1988. 

The only source of information identified for this facility was the 

1988 Report to Congress

EPA-HQ-RCRA-2009-0640-DRAFT-0346.xls - 67 Cases Page 14 of 27 Natural Resource Technology, Inc.
67 proven and potential cases displayed in this spreadsheet

Only the 63 coal ash cases are summarized beginning in row 78

The 4 oil ash cases are at the bottom of the sheet

Site Name

Montana-Dakota Utilities R.M. 

Heskett Station, North Dakota

Arizona Public Service Co. Cholla 

Steam Electric Generating Station, 

Arizona

Remedial Activities Mitigation Notes

Site was closed and capped in 

1989/1990. Clay cap constructed per 

North Dakota Department of Health 

guidance, and cap re vegetated in 

1990.

Rural water supplies provided to the 

only two landowners within 1/4 mile of 

the site.

Shallow groundwater in area reportedly has low quality due to 

natural causes.

EPA-HQ-RCRA-2009-0640-DRAFT-0346.xls - 67 Cases Page 15 of 27 Natural Resource Technology, Inc.
54 proven and potential coal ash cases with groundwater impacts displayed in this spreadsheet

Oil ash and surface water cases are not displayed here

Site Name # Category Media State Utility Landowner

ThirdParty? Offsite Site Size 

(acres)

Coal 

Ash

FGD 

Solids FSS Other (list) Type

Former 

Mine / 

Quarry?

Liner Liner 

Type LCS Sat. Ash? Year Opened

Year 

Closed

On 

NPL?

Facility 

Closed

Monitoring 

Continues

Potential for 

Receptors (Via 

GW)

Salem Acres Site (Massachusetts 

Electric Company) 1 I GW MA Mass. Electric Non-utility

No 

informatio

n

Yes 0.6 CCW no no

sewage sludge, 

tannery wastes, 

MSW

LF No no n/a

No 

informatio

n

1952 1969 Yes Yes No No

City of Beverly/Vitale Brothers Fly 

Ash Pit (New England Electric) 2 I GW MA New England Electric Non-utility Yes Yes 18 CCW no no

appliances, 

scrapped autos LF

Sand 

and 

Gravel

no n/a Yes 1950 1975 No No No information Yes

Don Frame Trucking, Inc. Fly Ash 

Landfill (Niagara Mohawk) 3 I GW NY Niagare Mohawk

Non-utility

No 

informatio

n

Yes no 

information CCW no no

other materials 

including yard 

sweepings

LF

No 

informati

on

No 

informati

on

No 

informati

on

No 

informatio

n

No 

informatio

n

No 

informati

on

No No Reportedly Yes

Virginia Electric Power Co. (VEPCO) 

Possum Point 4 I GW VA Dominion Dominion No No 40 RCC no no Oil Ash IMP No no n/a no

No 

informatio

n

No 

informati

on

No Yes No information No

PEPCO Morgantown Generating 

Station Faulkner Off-site Disposal 

Facility

5 I GW MD Mirant Mirant No No 181 RCC no no no LF

No 

informati

on

Partial

No 

informati

on

Partial

No 

informatio

n

1970 Active No No Yes Yes

Virginia Power Yorktown Power 

Station Chisman Creek Disposal Site 6 I GW VA Dominion Dominion

No 

informatio

n

Yes 27 CCW no no Pet Coke LF

Sand 

and 

Gravel

no n/a

No 

informatio

n

1957 1974 Yes No Yes Yes

South Carolina Electric & Gas 

Canadys Plant, South Carolina 10 I GW SC SCANA SCANA No No 175 CCW no no no IMP No no n/a no 1974 Active No Yes Yes

Dairy Power Cooperative E.J. 

Stoneman Generating Station Ash 

Disposal Pond, Wisconsin

13 I GW WI Dairyland Dairyland No No 22 CCW no no no IMP No no n/a Yes 1950 1987 No No Yes Yes

WEPCO Highway 59 Landfill, 

Wisconsin 14 I GW WI We Energies We Energies No Yes 23 CCW no no no LF

Sand 

and 

Gravel

no n/a Yes 1969 1979 No No Yes Yes

Alliant (Formerly Wisconsin Power & 

Light) Nelson Dewey Ash Disposal 

Facility, Wisconsin

15 I GW WI Alliant Alliant No No 24 CCW no no no IMP No no n/a Yes 1958 2001 No No Yes Yes

EPA-HQ-RCRA-2009-0640-DRAFT-0346.xls - 54 Groundwater Cases Page 16 of 27 Natural Resource Technology, Inc.
54 proven and potential coal ash cases with groundwater impacts displayed in this spreadsheet

Oil ash and surface water cases are not displayed here

Site Name # Category Media State Utility Landowner

ThirdParty? Offsite Site Size 

(acres)

Coal 

Ash

FGD 

Solids FSS Other (list) Type

Former 

Mine / 

Quarry?

Liner Liner 

Type LCS Sat. Ash? Year Opened

Year 

Closed

On 

NPL?

Facility 

Closed

Monitoring 

Continues

Potential for 

Receptors (Via 

GW)

WEPCO Cedar-Sauk Landfill, 

Wisconsin 16 I GW WI We Energies We Energies No Yes 28 CCW no no no LF

Sand 

and 

Gravel

no n/a No 1969 1979 No No Yes Yes

Wisconsin Electric Power Co. 

(WEPCO) Port Washington Facility, 

Wisconsin (Druecker)

17 I GW WI We Energies We Energies Yes Yes 15 CCW no no no LF Rock no n/a Yes 1948 1971 No No Yes Yes

Lansing Board of Water & Light 

(LBWL) North Lansing Landfill, 

Michigan

18 I GW MI LBWL LBWL No Yes 27 CCW no no no LF

Sand 

and 

Gravel

no n/a Yes 1980 1997 No No Yes No

Northern Indiana Public Service 

Corp. (NIPSCO) Yard 520 Landfill 

Site (Brown's Landfill) Township of 

Pines, Porter County, IN

19 I GW IN Nisource Nisource

No 

informatio

n

Yes 45 CCW no no no LF No Partial Clay no 1965 2001 No No Yes Yes

Basin Electric Power Cooperative 

W.J. Neal Station Surface 

Impoundment, North Dakota

23 I GW ND Basin Electric 

Power Coop.

Basin Electric 

Power Coop. No No 44 CCW no no no IMP No no n/a no 1955 1988 No Yes No Yes

Cooperative Power 

Association/United Power Coal 

Creek Station Surface 

Impoundments, North Dakota

24 I GW ND Great River 

Energy

Great River 

Energy No No 220 no Yes no

Mill rejects, small 

amounts of 

bottom ash.

IMP No Retrofit Composi

te no 1978 Active No No Yes No

K.R. Rezendes South Main Street 

Ash Landfill, Freetown, 

Massachusetts

25 II GW MA PG&E Non-utility

No 

informatio

n

Yes 31.5 CCW no no no LF

Sand 

and 

Gravel

no n/a no 1975 2001 No No No information No

AES Creative Resources Weber Ash 

Disposal Site, New York 27 II GW NY AES AES No Yes 12.1 CCW no no no LF No Yes PVC Yes no 1978 2001 No No Yes Yes

Central Hudson Gas and Electric 

Corporation Danskammer Waste 

Management Facility, New York

28 II GW NY Dynegy Dynegy No No no 

information CCW no no no LF

No 

informati

on

No 

informati

on

No 

informati

on

No 

informatio

n

No 

informatio

n

No 

informati

on

No

No 

informati

on

No information No

C.R. Huntley Fly ash Landfill, New

York 29 II GW NY NRG NRG No No no information CCW no no no LF

No 

informati

on

No 

informati

on

No 

informati

on

No 

informatio

n

No 

informatio

n

No 

informati

on

No

No 

informati

on

No information No

Elrama Plant, Pennsylvania 30 II GW PA Reliant Reliant No Yes 22 CCW no

Poz-OTec no LF Coal no n/a No 1979

No 

informati

on

No

No 

informati

on

No information No

Tennessee Valley Authority Widows 

Creek Fossil Fuel Plant, Alabama 32 II GW AL TVA TVA No No 310 CCW no no no IMP No no n/a No 1950 Active No No No No

Tennessee Valley Authority Colbert 

Fossil Fuel Plant, Alabama 33 II GW AL TVA TVA No No See Notes CCW no no no IMP No Retrofit Clay no 1975 Active No No Yes No

Duke Power Allen Steam Generating 

Plant, North Carolina 34 II GW NC Duke Energy Duke Energy No No 170 CCW no no no IMP No no n/a No 1973 Active No No Yes No

Cinergy East Bend Scrubber Sludge 

Landfill, Kentucky 35 II GW KY Duke Energy Duke Energy No No 213 no no Yes bottom ash and mill rejects IMP/LF No Partial n/a No 1981 Active No No Yes No

Florida Power and Light Lansing 

Smith Plant, Florida 36 II GW FL Southern Southern No No 172 CCW no no no IMP No no n/a No 1965 Active No No No information No

Commonwealth Edison Powerton 

Plant - Mahoney Landfill, Pekin, 

Tazewell County, Illinois

40 II GW IL Midwest 

Generation Uncertain Yes Yes 40 CCW no no no LF

Sand 

and 

Gravel

Yes Poz-OPac Yes 1972 1982 No

No 

informati

on

No information No

EPA-HQ-RCRA-2009-0640-DRAFT-0346.xls - 54 Groundwater Cases Page 17 of 27 Natural Resource Technology, Inc.
54 proven and potential coal ash cases with groundwater impacts displayed in this spreadsheet

Oil ash and surface water cases are not displayed here

Site Name # Category Media State Utility Landowner

ThirdParty? Offsite Site Size 

(acres)

Coal 

Ash

FGD 

Solids FSS Other (list) Type

Former 

Mine / 

Quarry?

Liner Liner 

Type LCS Sat. Ash? Year Opened

Year 

Closed

On 

NPL?

Facility 

Closed

Monitoring 

Continues

Potential for 

Receptors (Via 

GW)

Xcel Energy/Southern Minnesota 

Municipal Power Agency - Sherburne 

County (Sherco) Generating Plant 

Becker, Minnesota

41 II GW MN Xcel Xcel No No 62 CCW Yes no no IMP No Yes Clay No 1976

No 

informati

on

No

No 

informati

on

No information No

Alliant Rock River Ash Disposal 

Facility, Wisconsin 42 II GW WI Alliant Alliant No No 17 CCW no no no LF No no n/a Yes 1954 2007 No No Yes No

Michigan City Site, Michigan City, 

Indiana 43 II GW IN Nisource Nisource No No no information CCW no no no IMP

No 

informati

on

No 

informati

on

No 

informati

on

No 

informatio

n

No 

informatio

n

No 

informati

on

No

No 

informati

on

No information No

Bailly Generating Station, Indiana 44 II GW IN Nisource Nisource No No 14 CCW no no no IMP No Retrofit HDPE no 1962 Active No No Yes Yes

Alliant Edgewater 1-4 Ash Disposal 

Site, Wisconsin 45 II GW WI Alliant Alliant No No 17 CCW no no no LF No no n/a Yes 1969 1986 No No Yes Yes

Wisconsin Power Supply Company 

(WPSC) Pulliam Ash Disposal Site, 

Wisconsin

46 II GW WI Integrys Integris No No 80 CCW no no no LF No no n/a Yes 1971 1986 No No Yes No

Central Illinois Light Co. Duck Creek 

Station , Illinois 47 II GW IL Ameren Ameren No No 140 CCW no no no IMP No no n/a no

No 

informatio

n

2009 No No Yes No

Illinois Power Company Hennepin 

Power Station Illinois 48 II GW IL Dynegy Midwest Generation

Dynegy Midwest 

Generation No No 68 CCW no no no IMP No no n/a Yes 1952 1996 No No Yes No

Illinois Power Company Havanna 

Power Plant, Illinois 49 II GW IL Dynegy Midwest Generation

Dynegy Midwest 

Generation No No 30 CCW no no no IMP No no n/a No 1977 1994 No Yes No No

Dairyland Power Alma On-Site Fly 

Ash Landfill, Wisconsin 50 II GW WI Dairyland Dairyland No No 56 CCW no no no LF No no n/a Yes 1947 1986 No No Yes No

Dairyland Power Alma Off-Site Fly 

Ash Landfill, Wisconsin 51 II GW WI Dairyland Dairyland No Yes 29 CCW no no no LF No Yes Clay no 1983 2007 No No Yes Yes

Illinois Power Vermillion Power 

Station, Illinois 52 II GW IL Dynegy Midwest Generation

Dynegy Midwest 

Generation No No 12 CCW no no no IMP No Yes See notes no 1989 Active No No Yes No

Central Illinois Public Service 

Company Hutsonville Power Station, 

Illinois

53 II GW IL Ameren Ameren No No 22 CCW no no no IMP No no n/a Yes 1968 2000 No No Yes No

Illinois Power Company Wood River 

Power Station, Illinois 54 II GW IL Dynegy Midwest Generation

Dynegy Midwest 

Generation No No 60 CCW no no no IMP No Partial See notes Partial no 1978 Active No No Yes No

R.M. Schahfer Generating Station, 

IN 55 II GW IN Nisource Nisource No No 230 CCW no Yes no LF No Partial Composite Partial no 1984 Active No No Yes No

Coffeen/White & Brewer Trucking Fly 

Ash Landfill, Illinois 56 II GW IL Ameren Non-utility yes Yes 40 CCW no no no LF No no n/a Yes 1977 1997 No No Yes No

Southern Indiana Gas and Electric 

Company (SIGECO) A.B. Brown 

Generating Station, Indiana

57 II GW IN Vectren Vectren No No 130 no yes no no LF No Partial Clay

No 

informatio

n

1979

No 

informati

on

No No Yes Yes

EPA-HQ-RCRA-2009-0640-DRAFT-0346.xls - 54 Groundwater Cases Page 18 of 27 Natural Resource Technology, Inc.
54 proven and potential coal ash cases with groundwater impacts displayed in this spreadsheet

Oil ash and surface water cases are not displayed here

Site Name # Category Media State Utility Landowner

ThirdParty? Offsite Site Size 

(acres)

Coal 

Ash

FGD 

Solids FSS Other (list) Type

Former 

Mine / 

Quarry?

Liner Liner 

Type LCS Sat. Ash? Year Opened

Year 

Closed

On 

NPL?

Facility 

Closed

Monitoring 

Continues

Potential for 

Receptors (Via 

GW)

Cincinnati Gas & Electric Co. 

Miamiview Landfill, Ohio 58 II GW OH Duke Energy Duke Energy No Yes 100 CCW no no no LF

Sand 

and 

Gravel

Yes Clay no 1983 1997 No Yes No No

Indiana Power & Light Petersburg 

Generating Station, Indiana 59 II GW IN AES/IPL AES/IPL No No 75 no no

Poz-OTec no LF No no n/a no 1976 Active No No No information No

Hoosier Energy Merom Generating 

Station Coal Combustion Waste 

Landfill, Indiana

60 II GW IN Hoosier Energy Hoosier Energy No No 190 CCW no

Poz-OTec no LF No Partial Clay Yes 1982 Active No No Yes No

Cinergy W.C. Beckjord Station, Ohio 61 II GW OH Duke Energy Duke Energy No No 34 CCW no no no IMP No no n/a no 1956 1985 No No Yes Yes

Lemberger Landfill, Wisconsin 62 II GW WI Manitowoc Pub. 

Utilities Non-utility

No 

informatio

n

Yes 21 CCW no no MSW LF

Sand 

and 

Gravel

no n/a

No 

informatio

n

1940 1976 Yes No Yes Yes

Conesville Fixed FGD Sludge 

Landfill, Ohio 63 II GW OH AEP AEP No No 50 no no Yes No LF No no n/a no 1976 1988 No Yes No No

Muscatine County Landfill, Iowa 64 II GW IA No information Non-utility

No 

informatio

n

Yes no 

information CCW no no No information LF

No 

informati

on

no n/a Yes 1964 1973 No

No 

informati

on

No information Yes

Dave Johnston Power Plant, 

Wyoming 65 II GW WY Pacificorp Pacificorp No No 50 CCW no no no LF No no n/a No

No 

informatio

n

No 

informati

on

No

No 

informati

on

No information No

Montana-Dakota Utilities R.M. 

Heskett Station, North Dakota 66 II GW ND MDU Resources MDU Resources No No 15 CCW no no no LF No no n/a no 1954 1989 No No Yes Yes

Arizona Public Service Co. Cholla 

Steam Electric Generating Station, 

Arizona

67 II GW AZ APS APS No No no 

information CCW no no no IMP

No 

informati

on

No 

informati

on

No 

informati

on

No 

informatio

n

No 

informatio

n

No 

informati

on

No No No information No

EPA-HQ-RCRA-2009-0640-DRAFT-0346.xls - 54 Groundwater Cases Page 19 of 27 Natural Resource Technology, Inc.
54 proven and potential coal ash cases with groundwater impacts displayed in this spreadsheet

Oil ash and surface water cases are not displayed here

Site Name

Salem Acres Site (Massachusetts 

Electric Company)

City of Beverly/Vitale Brothers Fly 

Ash Pit (New England Electric)

Don Frame Trucking, Inc. Fly Ash 

Landfill (Niagara Mohawk)

Virginia Electric Power Co. (VEPCO) 

Possum Point

PEPCO Morgantown Generating 

Station Faulkner Off-site Disposal 

Facility

Virginia Power Yorktown Power 

Station Chisman Creek Disposal Site

South Carolina Electric & Gas 

Canadys Plant, South Carolina

Dairy Power Cooperative E.J. 

Stoneman Generating Station Ash 

Disposal Pond, Wisconsin

WEPCO Highway 59 Landfill, 

Wisconsin

Alliant (Formerly Wisconsin Power & 

Light) Nelson Dewey Ash Disposal 

Facility, Wisconsin

Number of 

Potential 

Receptors

Any 

Exceedance

Offsite 

Exceedance?

MCL 

Exceedance?

Other 

Exceedance?

Receptor & 

Exceedance

Receptor & 

Offsite

Receptor & 

Offsite MCL

Receptor & 

Onsite

Receptor & 

Onsite MCL

Remediation 

Performed Cap CCP Removal Alt. GW Supply GW Extraction Barrier Wall

0 0 no no 0 0 0 0 0 Yes No Yes No No No

5 1 0 Onsite Onsite 1 0 0 1 1 Yes No Yes No No No

No information 1 1 no Offsite 1 1 0 0 0 Yes Clay No 1 well No No

0 0 0 no no 0 0 0 0 0 Yes No Yes No No No

1 1 0 Onsite Onsite 1 0 0 1 1 Yes Yes No No No Yes

55 1 1 Offsite Offsite 1 1 1 0 0 Yes Soil No 55 homes Yes No

3 1 0 Onsite Onsite 1 0 0 1 1 Yes No Partial No No Yes

50 1 1 Offsite Offsite 1 1 1 0 0 Yes Clay Partial

1 village well 

and some 

private wells

No No

50 1 1 no Offsite 1 1 0 0 0 Yes PVC Partial 14 wells No No

2 1 0 Onsite Onsite 1 0 0 1 1 Yes GCL No No No No

EPA-HQ-RCRA-2009-0640-DRAFT-0346.xls - 54 Groundwater Cases Page 20 of 27 Natural Resource Technology, Inc.
54 proven and potential coal ash cases with groundwater impacts displayed in this spreadsheet

Oil ash and surface water cases are not displayed here

Site Name

WEPCO Cedar-Sauk Landfill, 

Wisconsin

Wisconsin Electric Power Co. 

(WEPCO) Port Washington Facility, 

Wisconsin (Druecker)

Lansing Board of Water & Light 

(LBWL) North Lansing Landfill, 

Michigan

Northern Indiana Public Service 

Corp. (NIPSCO) Yard 520 Landfill 

Site (Brown's Landfill) Township of 

Pines, Porter County, IN

Basin Electric Power Cooperative 

W.J. Neal Station Surface 

Impoundment, North Dakota

Cooperative Power 

Association/United Power Coal 

Creek Station Surface 

Impoundments, North Dakota

K.R. Rezendes South Main Street 

Ash Landfill, Freetown, 

Massachusetts

AES Creative Resources Weber Ash 

Disposal Site, New York

Central Hudson Gas and Electric 

Corporation Danskammer Waste 

Management Facility, New York

C.R. Huntley Fly ash Landfill, New

York

Elrama Plant, Pennsylvania

Tennessee Valley Authority Widows 

Creek Fossil Fuel Plant, Alabama

Tennessee Valley Authority Colbert 

Fossil Fuel Plant, Alabama

Duke Power Allen Steam Generating 

Plant, North Carolina

Cinergy East Bend Scrubber Sludge 

Landfill, Kentucky

Florida Power and Light Lansing 

Smith Plant, Florida

Commonwealth Edison Powerton 

Plant - Mahoney Landfill, Pekin, 

Tazewell County, Illinois

Number of 

Potential 

Receptors

Any 

Exceedance

Offsite 

Exceedance?

MCL 

Exceedance?

Other 

Exceedance?

Receptor & 

Exceedance

Receptor & 

Offsite

Receptor & 

Offsite MCL

Receptor & 

Onsite

Receptor & 

Onsite MCL

Remediation 

Performed Cap CCP Removal Alt. GW Supply GW Extraction Barrier Wall

2 1 1 Onsite Offsite 1 1 0 0 1 Yes PVC No No Yes No

30 1 0 no Onsite 1 0 0 1 0 Yes PVC No 1 well No No

1 1 Onsite Offsite 0 0 0 0 0 Yes Soil No No Yes Yes

340 1 1 Offsite Offsite 1 1 1 0 0 Yes Clay No 340 wells No No

5 1 0 Onsite Onsite 1 0 0 1 1 Yes Clay Partial No No No

1 0 Onsite Onsite 0 0 0 0 0 Yes No No No No No

1 0 Onsite no 0 0 0 0 0 Yes Partial No No No No

15 1 0 no Onsite 1 0 0 1 0 Yes LLDPE No No No No

1 0 no Onsite 0 0 0 0 0 No information

1 0 Onsite Onsite 0 0 0 0 0 No information

0 0 no no 0 0 0 0 0 No information

0 0 no no 0 0 0 0 0 No

1 0 no Onsite 0 0 0 0 0 Yes No No No No No

1 0 no Onsite 0 0 0 0 0 No

1 0 Onsite no 0 0 0 0 0 No

0 0 no no 0 0 0 0 0 No

1 0 no Onsite 0 0 0 0 0 No information

EPA-HQ-RCRA-2009-0640-DRAFT-0346.xls - 54 Groundwater Cases Page 21 of 27 Natural Resource Technology, Inc.
54 proven and potential coal ash cases with groundwater impacts displayed in this spreadsheet

Oil ash and surface water cases are not displayed here

Site Name

Xcel Energy/Southern Minnesota 

Municipal Power Agency - Sherburne 

County (Sherco) Generating Plant 

Becker, Minnesota

Alliant Rock River Ash Disposal 

Facility, Wisconsin

Michigan City Site, Michigan City, 

Indiana

Bailly Generating Station, Indiana

Alliant Edgewater 1-4 Ash Disposal 

Site, Wisconsin

Wisconsin Power Supply Company 

(WPSC) Pulliam Ash Disposal Site, 

Wisconsin

Central Illinois Light Co. Duck Creek 

Station , Illinois

Illinois Power Company Hennepin 

Power Station Illinois

Illinois Power Company Havanna 

Power Plant, Illinois

Dairyland Power Alma On-Site Fly 

Ash Landfill, Wisconsin

Dairyland Power Alma Off-Site Fly 

Ash Landfill, Wisconsin

Illinois Power Vermillion Power 

Station, Illinois

Central Illinois Public Service 

Company Hutsonville Power Station, 

Illinois

Illinois Power Company Wood River 

Power Station, Illinois

R.M. Schahfer Generating Station, 

IN

Coffeen/White & Brewer Trucking Fly 

Ash Landfill, Illinois

Southern Indiana Gas and Electric 

Company (SIGECO) A.B. Brown 

Generating Station, Indiana

Number of 

Potential 

Receptors

Any 

Exceedance

Offsite 

Exceedance?

MCL 

Exceedance?

Other 

Exceedance?

Receptor & 

Exceedance

Receptor & 

Offsite

Receptor & 

Offsite MCL

Receptor & 

Onsite

Receptor & 

Onsite MCL

Remediation 

Performed Cap CCP Removal Alt. GW Supply GW Extraction Barrier Wall

1 0 no Onsite 0 0 0 0 0 No information

1 0 Onsite Onsite 0 0 0 0 0 Yes Soil No No No No

1 0 Onsite no 0 0 0 0 0 No information

20 1 1 Onsite Offsite 1 1 0 0 1 Yes No Yes No No No

20 1 0 no Onsite 1 0 0 1 0 Yes Clay No No No No

1 0 no Onsite 0 0 0 0 0 Yes Soil No No No No

0 0 no no 0 0 0 0 0 Pending

1 0 no Onsite 0 0 0 0 0 Yes No No No No No

1 0 no Onsite 0 0 0 0 0 Yes Soil No No No No

1 0 no Onsite 0 0 0 0 0 Yes Clay No No No No

6 1 0 no Onsite 1 0 0 1 0 Yes Clay No No No No

0 0 no no 0 0 0 0 0 No

1 0 no Onsite 0 0 0 0 0 Pending HDPE No No Yes No

1 0 no Onsite 0 0 0 0 0 Yes No Yes No No No

1 0 Onsite Onsite 0 0 0 0 0 Yes Geomembrane No No No No

1 0 Onsite Onsite 0 0 0 0 0 Yes Clay No No No No

1 1 0 Onsite Onsite 1 0 0 1 1 Yes No No No No Yes

EPA-HQ-RCRA-2009-0640-DRAFT-0346.xls - 54 Groundwater Cases Page 22 of 27 Natural Resource Technology, Inc.
54 proven and potential coal ash cases with groundwater impacts displayed in this spreadsheet

Oil ash and surface water cases are not displayed here

Site Name

Cincinnati Gas & Electric Co. 

Miamiview Landfill, Ohio

Indiana Power & Light Petersburg 

Generating Station, Indiana

Hoosier Energy Merom Generating 

Station Coal Combustion Waste 

Landfill, Indiana

Cinergy W.C. Beckjord Station, Ohio

Lemberger Landfill, Wisconsin

Conesville Fixed FGD Sludge 

Landfill, Ohio

Muscatine County Landfill, Iowa

Dave Johnston Power Plant, 

Wyoming

Montana-Dakota Utilities R.M. 

Heskett Station, North Dakota

Arizona Public Service Co. Cholla 

Steam Electric Generating Station, 

Arizona

Number of 

Potential 

Receptors

Any 

Exceedance

Offsite 

Exceedance?

MCL 

Exceedance?

Other 

Exceedance?

Receptor & 

Exceedance

Receptor & 

Offsite

Receptor & 

Offsite MCL

Receptor & 

Onsite

Receptor & 

Onsite MCL

Remediation 

Performed Cap CCP Removal Alt. GW Supply GW Extraction Barrier Wall

1 0 no Onsite 0 0 0 0 0 Yes Clay No No No No

0 0 no no 0 0 0 0 0 No

1 0 Onsite Onsite 0 0 0 0 0 Yes Soil No No See Notes No

30 1 0 Onsite Onsite 1 0 0 1 1 Yes No No No Yes No

23 0 0 no no 0 0 0 0 0 Yes Yes No No Yes Yes

1 0 Onsite Onsite 0 0 0 0 0 Yes Clay No No No No

8 1 0 no Onsite 1 0 0 1 0 No information

0 0 no no 0 0 0 0 0 No information

2 1 0 Onsite Onsite 1 0 0 1 1 Yes Clay No No No No

0 0 no no 0 0 0 0 0 No information

EPA-HQ-RCRA-2009-0640-DRAFT-0346.xls - 54 Groundwater Cases Page 23 of 27 Natural Resource Technology, Inc.
54 proven and potential coal ash cases with groundwater impacts displayed in this spreadsheet

Oil ash and surface water cases are not displayed here

Site Name

Salem Acres Site (Massachusetts 

Electric Company)

City of Beverly/Vitale Brothers Fly 

Ash Pit (New England Electric)

Don Frame Trucking, Inc. Fly Ash 

Landfill (Niagara Mohawk)

Virginia Electric Power Co. (VEPCO) 

Possum Point

PEPCO Morgantown Generating 

Station Faulkner Off-site Disposal 

Facility

Virginia Power Yorktown Power 

Station Chisman Creek Disposal Site

South Carolina Electric & Gas 

Canadys Plant, South Carolina

Dairy Power Cooperative E.J. 

Stoneman Generating Station Ash 

Disposal Pond, Wisconsin

WEPCO Highway 59 Landfill, 

Wisconsin

Alliant (Formerly Wisconsin Power & 

Light) Nelson Dewey Ash Disposal 

Facility, Wisconsin

Remedial Activities Mitigation Notes

Approximately 11,000 cubic yards of fly 

ash removed from the site in 1995 and 

about 1,000 cubic yards of fly ash from 

the adjacent wetland in 1999. Interim 

remedial actions in the 1980s included 

capping the wastes and constructing 

slurry walls. Remediat

235-acre landfill with a small fly ash pile; listed on NPL for 

contaminated sludge ponds, but these contained other wastes. 

Removed from NPL list in 2001.

Fly ash removed, site redesigned to 

protect wetlands

Fly ash migrated down a stream to Wenham Lake, and was 

reportedly removed. No water quality exceedances reported at 

the water treatment plant that draws from the lake. Closure 

request submitted in 2007

A water supply well was abandoned 

and the building connected to a public 

water supply. It is reported that the NY 

State Department of Environmental 

Conservation (NYSDEC) required the 

landfill be capped with 10-7 clay

Solids were dredged from the unlined 

pond and placed in a second lined 

facility.

Remedial measures at the site included 

closure and capping of older units 

(1996), installation of liners in

newer units (1993), installation of a 

slurry wall to prevent ground water 

migration (1994), and rehabilitation of a 

portion of a stream (1995).

Remediation included a groundwater 

collection and treatment system, 

construction of a low-permeability soil 

cap, a soil cover, alternate water 

supply for 55 nearby homes, and 

relocating a portion of the tributary. 

About 80% of the ash was mined from 

the pond for beneficial reuse, and a 

slurry wall was installed in 1996. A 

dewatering system was added in 2007.

A slurry wall was also constructed at 

the pond that replaced the pond that is 

subject of the damage case report.

Discontinued use; installed cover (1-

foot clay, 1 foot sand, and 6-inch 

topsoil) in 1989. Consolidated ash to 

10-acre area away from residences. 

Replaced village well and provided 

village water to affected residences. 

Saturated ash excavation and 

placement of a PVC cap over the 

landfill completed in 2000/2001. 

Alternative drinking water source 

(municipal water supply) was provided 

to approximately 10 homes and our 

commercial buildings.

Coal ash was removed from a one-acrea area where it was 

known to be placed below water table.

Capping began in 1997 Changed to dry ash disposal in 1996. 

EPA-HQ-RCRA-2009-0640-DRAFT-0346.xls - 54 Groundwater Cases Page 24 of 27 Natural Resource Technology, Inc.
54 proven and potential coal ash cases with groundwater impacts displayed in this spreadsheet

Oil ash and surface water cases are not displayed here

Site Name

WEPCO Cedar-Sauk Landfill, 

Wisconsin

Wisconsin Electric Power Co. 

(WEPCO) Port Washington Facility, 

Wisconsin (Druecker)

Lansing Board of Water & Light 

(LBWL) North Lansing Landfill, 

Michigan

Northern Indiana Public Service 

Corp. (NIPSCO) Yard 520 Landfill 

Site (Brown's Landfill) Township of 

Pines, Porter County, IN

Basin Electric Power Cooperative 

W.J. Neal Station Surface 

Impoundment, North Dakota

Cooperative Power 

Association/United Power Coal 

Creek Station Surface 

Impoundments, North Dakota

K.R. Rezendes South Main Street 

Ash Landfill, Freetown, 

Massachusetts

AES Creative Resources Weber Ash 

Disposal Site, New York

Central Hudson Gas and Electric 

Corporation Danskammer Waste 

Management Facility, New York

C.R. Huntley Fly ash Landfill, New

York

Elrama Plant, Pennsylvania

Tennessee Valley Authority Widows 

Creek Fossil Fuel Plant, Alabama

Tennessee Valley Authority Colbert 

Fossil Fuel Plant, Alabama

Duke Power Allen Steam Generating 

Plant, North Carolina

Cinergy East Bend Scrubber Sludge 

Landfill, Kentucky

Florida Power and Light Lansing 

Smith Plant, Florida

Commonwealth Edison Powerton 

Plant - Mahoney Landfill, Pekin, 

Tazewell County, Illinois

Remedial Activities Mitigation Notes

A clay barrier cap was placed over the 

site in 1982, a groundwater extraction 

system was operated at the site from 

1984 until 1997. The cap was 

upgraded to with a geosynthetic 

material (30-mil PVC) and an upper 

drainage layer in 1997.

Site Capped. One water supply 

replaced.

Contaminated private well was located about 250 feet from fill 

area.

Slurry wall with gradient control system. 

Soil cap planned but not constructed 

as of 2009.

Remediation system for an adjacient superfund site appears to 

be capturing downgradient plume. Site is in urban area serviced 

by municipal water; no potable wells within one mile.

Alternative groundwater supplies 

provided between 2003 and 2005. In 

2006/2007, both portions of the landfill 

were capped with 2-feet of clay 

covered by topsoil, in accordance with 

IDEM requirements. 

In 1990, ash was consolidated to a 22-

acre footprint and then capped with 18-

inch engineered clay cover and an 18-

inch layer of top soil, which was seeded 

and mulched. 

8/31/95 report - As attributable to landfill, but Cd, Cu, Pb in city 

well not tied to site (Zn also in city well). Also, USEPA Reg. VIII 

Rem Site Ass Decision (3-3-00) stated no Assessment required

The ponds were relined with a 

composite geosynthetic/clay liners 

between 1987 and 1993.

A partial cap of unknown design is 

reported for this site.

MADEP reportedly required additional site monitoring wells and 

surface water sampling when the monitoring program was 

modified. The property owner is currently proposing to build a 

retail complex over the site.

Closed and capped in 2001. Cap 

features a 60-mil LLDPE barrier 

between 120 mil geotextile layers.

The only source of information identified for this facility was the 

1988 Report to Congress

Exceedance was reportedly in an ungradient well.

Remediation listed is for metal cleaning 

waste basin: discontinued using small 

pond (which is not an ash 

impoundment) for acid cleaning in 

1990s.

Have abandoned known leaking ponds 

and put in clay liner to catch coal pile 

runoff

The damage case report is based either on concentrations near a 

2-acre, clay-lined basin used to store metal cleaning wastes or a 

well screened in coal ash; inclusion of this facility as a damage 

case on this basis is questionable. Regardless, monitoring

This facility does not appear to belong on the damage case list 

based on low ash indicator concentrations in groundwater.

Installed seepage collection to address 

seeps in some areas around landfill.

The damage case attributed groundwater issues at this facility to 

the scrubber sludge landfill but a follow-up assessment performed 

by the utility identified the impoundment as the source of the 

issues.

Groundwater is locally saline at depth

The only source of information identified for this facility was the 

1988 Report to Congress

EPA-HQ-RCRA-2009-0640-DRAFT-0346.xls - 54 Groundwater Cases Page 25 of 27 Natural Resource Technology, Inc.
54 proven and potential coal ash cases with groundwater impacts displayed in this spreadsheet

Oil ash and surface water cases are not displayed here

Site Name

Xcel Energy/Southern Minnesota 

Municipal Power Agency - Sherburne 

County (Sherco) Generating Plant 

Becker, Minnesota

Alliant Rock River Ash Disposal 

Facility, Wisconsin

Michigan City Site, Michigan City, 

Indiana

Bailly Generating Station, Indiana

Alliant Edgewater 1-4 Ash Disposal 

Site, Wisconsin

Wisconsin Power Supply Company 

(WPSC) Pulliam Ash Disposal Site, 

Wisconsin

Central Illinois Light Co. Duck Creek 

Station , Illinois

Illinois Power Company Hennepin 

Power Station Illinois

Illinois Power Company Havanna 

Power Plant, Illinois

Dairyland Power Alma On-Site Fly 

Ash Landfill, Wisconsin

Dairyland Power Alma Off-Site Fly 

Ash Landfill, Wisconsin

Illinois Power Vermillion Power 

Station, Illinois

Central Illinois Public Service 

Company Hutsonville Power Station, 

Illinois

Illinois Power Company Wood River 

Power Station, Illinois

R.M. Schahfer Generating Station, 

IN

Coffeen/White & Brewer Trucking Fly 

Ash Landfill, Illinois

Southern Indiana Gas and Electric 

Company (SIGECO) A.B. Brown 

Generating Station, Indiana

Remedial Activities Mitigation Notes

The only source of information identified for this facility was the 

1988 Report to Congress

 Landfill capping began 2004 and 

finished 2007, included 2 feet of soil 

with 6-inch topsoil cover.

Plant converted to natural gas in 2000

In 1978, the impoundments were 

dredged, then lined with HDPE over 

clay

There are also two small landfills on site that do not appear th be 

the basis of the damage case assessment, both landfills are 

closed and capped.

Landfill closed with clay cap in 1986 

after construction of a new, upgraded 

landfill.

removed from service and replaced 

with lined facility.

The impoundments were removed from 

service and dewatered in 1996. Ash is 

now sluiced to a lined coal ash 

impoundment.

There were two seperate unlined impoundments at this site. 

Concentrations of boron and sulfate at the 38-acre east 

impoundment rapidly decreased in most monitoring wells after the 

facility was dewatered. Concentrations have decreased more 

slowly at the 

The impoundment was capped with 

native soils in 1994. 

Ash is now sluiced to a lined coal ash 

impoundment.

Site closure obtained in 2009. There are no groundwater quality 

exceedances associated with the lined impoundment.

2-foot clay cap with 6-inch topsoil cover 

placed on the landfill in 1986. 

Ash is now placed in a facility with a 

synthetic liner and a leachate collection 

system

Ash was originally slurried to the landfill.

Constructed over a shale bedrock unit which has very low

hydraulic conductivity; slurry walls inside the berms, built at time 

of construction, are keyed into the bedrock.

Facility is in an area of extensive former coal mining activity.

The utility is planning construction of a 

synthetic cap and a trench to intercept 

impacted groundwater.

In 1997-1998, ash was excavated from 

two unlined cells and lined cells were 

constructed in those areas. 

In 1999 the plant converted to a dry 

ash handling system and most ash is 

reportedly sold for beneficial reuse.

Site reclosed in 1998/1999 with 

membrane cap

Built new landfill cell (1997) with 

composite liner and leachate collection 

system 

Cells A-D were capped from 1980 to 

1990, Cell E was capped in 1997. 

Caps consist of 3 feet of clay with 

hydraulic conductivity of 10-7 cm/s.

No aquifer at this site. Groundwater monitored in clay or sand 

seams.

Slurry wall was installed in the NE 

corner of the original landfill in late 

1987. Groundwater pumps have been 

installed in two wells in the NE corner 

for the last 10 years.

EPA-HQ-RCRA-2009-0640-DRAFT-0346.xls - 54 Groundwater Cases Page 26 of 27 Natural Resource Technology, Inc.
54 proven and potential coal ash cases with groundwater impacts displayed in this spreadsheet

Oil ash and surface water cases are not displayed here

Site Name

Cincinnati Gas & Electric Co. 

Miamiview Landfill, Ohio

Indiana Power & Light Petersburg 

Generating Station, Indiana

Hoosier Energy Merom Generating 

Station Coal Combustion Waste 

Landfill, Indiana

Cinergy W.C. Beckjord Station, Ohio

Lemberger Landfill, Wisconsin

Conesville Fixed FGD Sludge 

Landfill, Ohio

Muscatine County Landfill, Iowa

Dave Johnston Power Plant, 

Wyoming

Montana-Dakota Utilities R.M. 

Heskett Station, North Dakota

Arizona Public Service Co. Cholla 

Steam Electric Generating Station, 

Arizona

Remedial Activities Mitigation Notes

Closed and capped in 1996

Area 2 was constructed with an 

underdrain to intercept in-flowing 

perched GW; the company also 

installed a toe-drain at Area 1 to 

intercept perched GW seeping from 

landfill.

Modified ash hauling methods in Area 

2 to prevent incidental ash to a 

perimeter ditch.

There are two ash landfills at this site, Area 1 is a closed 101 

acre site constructed in 1982, and Area 2A is an active 89 acre 

site constructed in 1994 which will soon be replaced by a new

landfill that will also have a liner and underdrain system. The

Ash sluicing ceased in 1985. 

Interceptor well installed 1993 to 

prohibit sulfate plume from reaching offsite public supply wells. The one public 

supply well that was located on-site has 

been abandoned.

The receptor count includes a municipal water supply well field.

Remediation completed by September 

1996 and included wastes relocation; 

landfill capping; slurry wall 

construction; leachate collection and 

groundwater treatment system 

installations; and implementing 

groundwater monitoring and use 

restrictions.

Former gravel pit, was used as an open dump from 1940 to 1970. 

In 1976 and 1977, an estimated 1,750 to 2,500 cubic yards of fly 

ash was transported to the site monthly and used as daily cover.

2-foot clay cap with 6-inch topsoil cover 

placed on the landfill in 1988. 

The only source of information identified for this facility was the 

1988 Report to Congress

Site was closed and capped in 

1989/1990. Clay cap constructed per 

North Dakota Department of Health 

guidance, and cap re vegetated in 

1990.

Rural water supplies provided to the 

only two landowners within 1/4 mile of 

the site.

Shallow groundwater in area reportedly has low quality due to 

natural causes.

EPA-HQ-RCRA-2009-0640-DRAFT-0346.xls - 54 Groundwater Cases Page 27 of 27 Natural Resource Technology, Inc.