![[logo] US EPA](../gif/logo_epaseal.gif){kind=logo}
- Special Waste Home
- Cement Kiln Dust
- Crude Oil and Gas
- Fossil Fuel Combustion
- Mineral Processing
- Mining
Information Request Responses from Electric Utilities
Related Links
Responses From Electric Utilities to EPA Information Request Letter
EPA has received responses to Information Requests (IR) sent out in March, April and December of 2009. * Posted below are all of the responses covering 240 facilities and 676 surface impoundments and similar management units, with the exception of information claimed as confidential business information. EPA will review all confidential business information claims and will post all information that is determined not to meet confidential business information criteria. Additional facility responses will be posted on this page as EPA completes a quality review.
The 240 facilities that responded to EPA’s information request have 676 surface impoundments and similar management units; 214 units (32 percent) have been given a hazard potential rating using the National Inventory of Dams criteria. Of the 214 units that have been rated, 45 units (21 percent) are rated as High Hazard Potential; 84 units (39 percent) are rated as Significant Hazard Potential; 74 units (35 percent) are rated as Low Hazard Potential; and 11 units (5 percent) are rated as Less than Low Hazard Potential. Of the total 676 units, 462 units (68 percent) have not received a hazard potential rating. The hazard potential ratings do not assess the stability of these units; the ratings assess the potential for loss of life or environmental and economic damage. Units rated as High Potential Hazard are those where failure will probably cause loss of life.
Of the 676 surface impoundments and similar units covered in these responses, 483 (71 percent) were designed by a professional engineer. The units show considerable variation in height, with 86 units (13 percent) being reported as greater than or equal to 50 feet in height; 156 units (23 percent) being reported as greater than or equal to 25 feet, but less than 50 feet in height; 286 units (42 percent) being reported as greater than or equal to 5 feet, but less than 25 feet in height; 17 units (3 percent) being reported as greater than 0 feet, but less than 5 feet in height; and 131 units (19 percent) being reported as having no height (at or below grade).
A majority of the information contained in the company responses has been inserted into a database. All the fields and entries in this database have been extracted and presented below in PDF and Microsoft Excel spreadsheets which enable users to easily search for aggregate or facility-specific information.
* EPA will likely be sending out more information requests in the future as new impoundments are identified. As new information is received, the numbers below will be updated accordingly. EPA previously reported a total of 228 facilities with 629 surface impoundments; these numbers have changed as a result of new information.
The companies in the table below have at some point claimed their responses contained confidential business information (CBI). While EPA reviews these claims, the information that is claimed as CBI is redacted (removed) from the coal ash survey results and survey responses from these companies. Reference to this information is also removed from the coal ash reports. If these claims are accepted by the EPA, the information will remain redacted. If EPA denies these claims, the information will be posted.
| Company that Claims CBI | Survey Question(s) Claimed Confidential |
EPA’ Determination on CBI Claim |
|---|---|---|
| Alabama Power Company - Barry Power Station - Gadsden Power Station - Gorgas Power Station - Greene County Power Station - James H. Miller Jr Power Station - Earnest C. Gaston Electric Generating Plant |
5, 6, 7, 8 5, 6, 7, 8 5, 6, 7, 8 5, 6, 7, 8 5, 6, 7, 8 5, 6, 7, 8 |
Denied Denied Denied Denied Denied Denied |
| Duke Energy Corporation | 8 | Denied |
| First Energy Generation Corporation - Little Blue Run Dam |
8 | Denied |
| Georgia Power Company - Bowen Power Station - Kraft Power Station - McIntosh Power Station - Harlee Branch Power Station - Scherer Power Station - Plant Hammond - Plant McDonough - Plant Mitchell - Plant Yates - Wansley Power Station |
5, 6, 7, 8 5, 6, 7, 8 5, 6, 7, 8 5, 6, 7, 8 5, 6, 7, 8 5, 6, 7, 8 5, 6, 7, 8 5, 6, 7, 8 5, 6, 7, 8 5, 6, 7, 8 |
Denied Denied Denied Denied Denied Denied Denied Denied Denied Denied |
| Gulf Power Company | 5, 8 | Denied |
| Mississippi Power Company | 5, 6, 7, 8 | Denied |
Database of Survey Responses
- Database Results (Excel) 04-12-12 (367K) PDF Version (6 pg, 163K)
- Survey Questions (PDF) (1 pg, 247K)
You will need Adobe Reader to view some of the files on this page. See EPA's PDF page to learn more.
Survey Responses
A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z- Alabama Power Company - Various Sites (PDF) (13 pp, 1.0MB)
- Alabama Power Company - Gaston Power Plant (PDF) (8 pp, 351K)
- Allegheny Energy - Mitchell Power Station Courtney, PA (PDF) (2 pg, 533K)
- Allegheny Energy Supply Co., LLC - Pleasants Power Station McElroy's Run Embankment and Impoundment (PDF) (14 pp, 485K)
- Allegheny Energy Supply Co., LLC - R. Paul Smith Power Station Lagoon Dam #3 (PDF) (13 pp, 493K)
- Allegheny Energy Supply Co., LLC - R. Paul Smith Power Station Lagoon Dam #4 (PDF) (14 pp, 482K)
- Allete, Inc. - All Facilities (PDF) (16 pp, 844K)
- Alliant Energy - Columbia Power Station (PDF) (12 pp, 572K)
- Alliant Energy - Burlington Power Station (PDF) (14 pp, 755K)
- Alliant Energy - Dubuque Power Station (PDF) (8 pp, 402K)
- Alliant Energy - Edgewater Power Station (PDF) (15 pp, 828K)
- Alliant Energy - Fox Lake Power Station (PDF) (8 pp, 404K)
- Alliant Energy - ML Kapp Power Station (PDF) (12 pp, 678K)
- Alliant Energy - Nelson Dewey Power Station (PDF) (9 pp, 487K)
- Alliant Energy - Ottumwa Power Station (PDF) (9 pp, 492K)
- Alliant Energy - Ottumwa Midland Landfill (PDF) (9 pp, 486K)
- Alliant Energy - Prairie Creek Power Station (PDF) (21 pp, 1.2MB)
- Alliant Energy - Rock River Power Station (PDF) (12 pp, 656K)
- Alliant Energy - Sixth Street Power Station (PDF) (12 pp, 654K)
- Alliant Energy - Sutherland Power Station (PDF) (11 pp, 593K)
- Alliant Energy - Lansing Power Station (PDF) (9 pp, 440K)
- Ameren Energy Generating Co. - All Facilities (PDF) (15 pp, 603K)
- Ameren UE - All Facilities (PDF) (14 pp, 535K)
- Ameren UE - Additional Facilities (PDF) (8 pp, 358K)
- American Electric Power (AEP) (PDF) (3 pp, 127K) - the companies indented below are subsidiaries of AEP
- Appalachian Power Co. - Clinch River (PDF) (2 pp, 13K)
- Appalachian Power Co. - Glen Lyn Power Station (PDF) (1 pg, 11K)
- Appalachian Power Co. - John E. Amos Power Station (PDF) (3 pp, 341K)
- Appalachian Power Co. - Kanawha River Power Station (PDF) (2 pp, 11K)
- Appalachian Power Co. - Mountaineer Power Station (PDF) (1 pg, 11K)
- Appalachian Power Co. - Philip Sporn Power Station (PDF) (2 pp, 13K)
- Cardinal Operating Co. - Cardinal Power Station (PDF) (2 pp, 13K)
- Columbus Southern Power Co. - Conesville Power Station (PDF) (1 pg, 11K)
- Columbus Southern Power Co. - Picway Power Station (PDF) (1 pg, 10K)
- Indiana Michigan Power Co. - Rockport Power Station (PDF) (1 pg, 10K)
- Indiana Michigan Power Co. - Tanners Creek Power Station (PDF) (1 pg, 13K)
- Kentucky Power Co. - Big Sandy Power Station (PDF) (2 pp, 13K)
- Ohio Power Co. - General James M Gavin Power Station (PDF) (2 pp, 11K)
- Ohio Power Co. - Kammer Power Plant (PDF) (1 pg, 10K)
- Ohio Power Co. - Mitchell Power Plant (PDF) (2 pp, 13K)
- Ohio Power Co. - Muskingum River Power Station(PDF) (1 pg, 12K)
- Oklahoma Public Service Co. - Northeastern 3 and 4 Plant (PDF) (1 pg, 11K)
- Oklahoma Public Service Co. - Oklaunion Power Station (PDF) (1 pg, 10K)
- Southwestern Electric Power Co. - Flint Creek Power Station (PDF) (1 pg, 11K)
- Southwestern Electric Power Co. (SWEPC) - Pirkey Power Station (PDF) (2 pp, 14K)
- Southwestern Electric Power Co. (SWEPC) - Welsh Plant (PDF) (1 pg, 11K)
- American Municipal Power, Inc. - Richard H. Gorsuch Power Station (PDF) (4 pg, 209K)
- Arizona Public Service Co. - Cholla Power Station (PDF) (10 pp, 3.1MBK)
- Arizona Public Service Co. - Four Corners Power Station (PDF) (14 pp, 595K)
- Arizona Electric Power Cooperative, Inc. - Apache Station Combustion Waste Disposal Facility (PDF) (10 pp, 533K)
- Associated Electric Cooperative Inc. - New Madrid Power Station (PDF) (4 pp, 292K)
- Associated Electric Cooperative Inc. - Thomas Hill Energy Center (PDF) (5 pp, 319K)
- Basin Electric Power Coop - Antelope Valley Station (PDF) (3 pp, 132K)
- Basin Electric Power Coop - Antelope Valley Station - Additional Information (PDF) (6 pp, 260K)
- Basin Electric Coop - Laramie River Power Station (PDF) (5 pp, 222K)
- Basin Electric Coop- Leland Olds Power Station (PDF) (6 pp, 249K)
- City of Independence - Blue Valley Power Station (PDF) (5 pp, 224K)
- City of Los Angeles - Intermountain Power Project (PDF) (10 pp, 566K)
- City of Sikeston - Sikeston Power Station (PDF) (10 pp, 765K)
- City of Springfield - All Facilities (PDF) (5 pp, 222K)
- CLECO Power LLC - Brame Energy Center (formerly Rodemacher Power Station) (PDF) (7 pp, 320K)
- CLECO Power LLC - Dolet Hills Power Station (PDF) (19 pp, 695K)
- Consumers Energy Co. - All Facilities (CEC) (PDF) (20 pp, 1.7MB)
- Coleto Creek Power LP - Coleto Creek Power Station (PDF) (8 pp, 328K)
- Dayton Power and Light Co. - Hutchings Station (PDF) (5 pp, 792K)
- Dayton Power and Light Co. - Killen Station (PDF) (5 pp, 273K)
- Dayton Power and Light Co. - JM Stuart Power Station (PDF) (5 pp, 201K)
- Detroit Edison Co. - Monroe Power Station (PDF) (6 pp, 379K)
- Dominion - All Facilities (PDF) (22 pp, 1.7MB)
- Dynegy Midwest Generation, Inc.- Baldwin Energy Complex (PDF) (7 pp, 333K)
- Dynegy Midwest Generation, Inc.- Havana Power Station (PDF) (8 pp, 417K)
- Dynegy Midwest Generation, Inc. - Hennepin Power Station (PDF) (7 pp, 342K)
- Dynegy Midwest Generation, Inc. (PDF) (2 pp, 70K)
- Dynegy Midwest Generation, Inc.- Vermilion Power Station(PDF) (8 pp, 395K)
- Dynegy Midwest Generation, Inc.- Wood River Power Station (PDF) (8 pp, 418K)
- Duke Energy Carolinas - Allen Steam Station (PDF) (5 pp, 270K)
- Duke Energy Carolinas - Belews Creek Steam Station (PDF) (5 pp, 269K)
- Duke Energy Carolinas - Buck Steam Station (PDF) (5 pp, 275K)
- Duke Energy Carolinas - Cliffside Steam Station (PDF) (6 pp, 293K)
- Duke Energy Carolinas - Dan River Steam Station (PDF) (6 pp, 280K)
- Duke Energy Carolinas - Lee Steam Station (PDF) (5 pp, 259K)
- Duke Energy Carolinas - Marshall Steam Station (PDF) (5 pp, 270K)
- Duke Energy Carolinas - Riverbend Steam Station (PDF) (5 pp, 271K)
- Duke Energy Indiana - Cayuga Generating Station (PDF) (5 pp, 246K)
- Duke Energy Indiana - Edwardsport Generating Station (PDF) (5 pp, 257K)
- Duke Energy Indiana - Gallagher Generating Station (PDF) (5 pp, 266K)
- Duke Energy Indiana - Gibson Generating Station (PDF) (5 pp, 270K)
- Duke Energy Indiana - Wabash River Generating Station (PDF) (5 pp, 266K)
- Duke Energy Ohio - Miami Fort Generating Station (PDF) (6 pp, 272K)
- Duke Energy Ohio - Walter Beckjord Generating Station (PDF) (5 pp, 272K)
- Duke Energy Ohio - WH Zimmer Generating Station (PDF) (5 pp, 272K)
- Duke Energy Kentucky - East Bend Generating Station (PDF) (5 pp, 267K)
- Edison International - EME Homer City Generating Station (PDF) (20 pp, 2MB)
- Empire District Electric Co. - Asbury Power Station (PDF) (5 pp, 221K)
- Empire District Electric Co. - Riverton Power Station (PDF) (4 pp, 214K)
- East Kentucky Power Cooperative, Inc. - All Facilities (PDF) (24 pp, 927K)
- First Light Power Resources - Mt. Tom Station (PDF) (5 pp, 207K)
- First Energy - Bruce Mansfield Power Station (PDF) (4 pp, 240K)
- First Energy - Blue Run Dam (PDF) (6 pp, 276K)
- Georgia Power - Plant McIntosh (PDF) (4pp, 221K)
- Georgia Power - Various Facilities (PDF) (14 pp, 824K)
- Georgia Power - Various Facilities, Part II (PDF) (15 pp, 846K)
- Gulf Power - Lansing Smith Power Station (PDF) (6 pp, 343K)
- GREnergy Coal Creek Station (PDF) (7 pg, 340K)
- GREnergy Stanton Plant (PDF) (21 pg, 9MB)
- Hoosier Energy Rec Inc. Frank E. Ratts Power Station (PDF) (5 pp, 206K)
- Hoosier Energy Rec Inc. - Merom Generating Station (PDF) (4 pp, 190K)
- Hunlock Power Station (PDF) (3 pg, 111K)
- Indiana-Kentucky Electric Corp. - Clifty Creek Power Station (PDF) (3 pp, 176K)
- Indianapolis Power and Light Co. - Harding Steet Power Station (PDF) (16 pp, 587K)
- Indianapolis Power and Light Co. - Eagle Valley Power Station (PDF) (6 pp, 376K)
- Indianapolis Power and Light Co. - Petersburg Power Station (PDF) (5 pp, 296K)
- Kansas City Board of Public Utilities - Nearman Creek Power Station (PDF) (6 pp, 273K)
- Kansas City Power and Light Co. - GMO Lake Road Generating Station (PDF) (7 pp, 373K)
- Kansas City Power and Light Co. - GMO Sibley Power Station (PDF) (7 pp, 792K)
- Kansas City Power and Light Co. - Hawthorn Power Station (PDF) (4 pp, 216K)
- Kansas City Power and Light Co. - Iatan Power Station (PDF) (4 pp, 217K)
- Kansas City Power and Light Co. - La Cygne Power Station (PDF) (7 pp, 404K)
- Kansas City Power and Light Co. - Montrose Power Station (PDF) (4 pp, 219K)
- Kentucky Utiliites Co. and Louisville Gas and Electric Co. - All Facilities (PDF) (19 pp, 742K)
- Lansing Board of Water and Light - Erickson Power Station (PDF) (3 pp, 172K)
- Lower Colorado River Authority - Fayette Power Project Power Station (PDF) (9 pp, 407K)
- Lower Colorado River Authority - Fayette Power Project Power Station, Additional Impoundment (PDF) (3 pp, 191K)
- MidAmerican Energy Co. - George Neal North Power Station (PDF) (13 pp, 687K)
- MidAmerican Energy Co. - Louisa Power Station (PDF) (5 pp, 301K)
- MidAmerican Energy Co. - Riverside Power Station (PDF) (8 pp, 539K)
- MidAmerican Energy Co. - Walter Scott Junior Energy Center (PDF) (10 pp, 521K)
- Minnkota Power Coop Inc. - Milton R Young Power Station (PDF) (9 pp, 677K)
- Mississippi Power - Plant Jack Watson (PDF) (5 pp, 289K)
- Northern Indiana Public Service Co. (PDF) (3 pp, 143K)
- Northern Indiana Public Service Co. - Bailly (PDF) (6 pg, 357K)
- Northern Indiana Public Service Co. - DH Mitchell (PDF) (6 pg, 382K)
- Northern Indiana Public Service Co. - Michigan City (PDF) (6 pg, 354K)
- Northern Indiana Public Service Co. - RM Schahfer Power Station (PDF) (8 pp, 485K)
- Northern Indiana Public Service Co. - Addendum (PDF) (4 pg, 240K)
- Northern States Power Co. - All Facilities (PDF) (21 pp, 952K)
- NRG Energy Center Dover LLC - Dover Facility (PDF) (5 pp, 313K)
- NRG Dunkirk Power LLC - Dunkirk Electric Generating Station (PDF) (10 pp, 1.0MB)
- NRG Huntley Power LLC - Huntley Electric Generating Station (PDF) (10 pp, 1.2MB)
- NRG Indian River Power LLC - Indian River Generating Station (PDF) (8 pp, 503K)
- NRG Somerset Power LLC - Somerset Electric Generating Station (PDF) (14 pp, 805K)
- NRG Texas Power LLC - Limestone Generating Station (PDF) (16 pp, 1.1MB)
- NRG Texas Power LLC - Parish Electric Generating Station (PDF) (7 pp, 533K)
- NVEnergy Reid Gardner(PDF) (11 pg, 369K)
- Louisiana Generating LLC - Big Cajun 2 Power Station (PDF) (10 pp, 595K)
- Ohio Valley Electric Corp. - Kyger Creek Power Station (PDF) (4 pp, 183K)
- Orlando Utilities Commission (PDF) (1 pg, 53K)
- Otter Tail Power Co Coyote Station PDF) (5 pg, 219K)
- PacifiCorp Energy - Jim Bridger Power Station (PDF) (15 pp, 625K)
- PacifiCorp Energy - Dave Johnston Power Station (PDF) (44 pp, 1.6MB)
- PacifiCorp Energy - Naughton Power Station (PDF) (24 pp, 907K)
- PacifiCorp Energy - Wyodak Power Station (PDF) (10 pp, 409K)
- Platte River Power Authority - Rawhide Power Station (PDF) (5 pp, 224K)
- PowerSouth Energy Cooperative - Charles R Lowman Power Station (PDF) (5 pp, 231K)
- PPL Generation, LLC - PPL Brunner Island Power Station (PDF) (11 pp, 482K)
- PPL Montana, LLC - Colstrip Steam Electric Station (PDF) (32 pp, 1.9MB)
- PPL Generation, LLC - PPL Holtwood Power Station (PDF) (4 pp, 168K)
- PPL Generation, LLC - PPL Martins Creek Power Station (PDF) (8 pp, 390K)
- PPL Generation, LLC - PPL Montour Power Station (PDF) (17 pp, 786K)
- Progress Energy - Corporate Response Letter (PDF) (2 pp, 82K)
- Progress Energy - Asheville Power Station (PDF) (6 pp, 1.1MB)
- Progress Energy - Cape Fear Power Station (PDF) (7 pp, 304K)
- Progress Energy - Lee Power Station (PDF) (4 pp, 173K)
- Progress Energy - L.V. Sutton Power Station (PDF) (6 pp, 232K)
- Progress Energy - Mayo Power Station (PDF) (4 pp, 176K)
- Progress Energy - Robinson Power Station (PDF) (4 pp, 168K)
- Progress Energy - Roxboro Power Station (PDF) (8 pp, 292K)
- Progress Energy - W.H. Weatherspoon Power Station (PDF) (7 pp, 201K)
- Salt River Proj Ag I&P Dist - Coronado Power Station (PDF) (9 pp, 406K)
- SCG&E - Wateree Generating Station - March 2, 2012 (PDF) (6 pp, 521K) Letter Response dated March 15, 2009 (PDF) (1 p, 119.44K)
- SCG&E - Urquhart Generating Station - March 2, 2012 (PDF) (6 pp, 304K) Letter Response dated August 4, 2009 (PDF) (6 pp, 1.99 MB)
- SCG&E - Canadys Steam Power Station - March 2, 2012 (PDF) (6 pp, 395K) Letter Response dated March 20, 2009 (PDF) (6 pp, 359.64K)
- Santee Cooper (South Carolina Pub Serv Auth) - All Facilities (PDF) (21 pp, 1.1MB)
- Southern Illinois Power Coop (PDF) (54 pg, 15M)
- Sunbury Generation LLC - WPS Energy Services Sunbury Gnerating Station (PDF) (3 pp, 191K)
- Tampa Electric Co. - Big Bend Power Station (PDF) (4 pp, 190K)
- Tennessee Valley Authority - All Facilities (PDF) (8 pp, 377K)
- Tennessee Valley Authority - Hazard Potential (PDF) (3 pp, 68K)
- Tennessee Valley Authority - TVA EPA Addendum I (PDF) (2 pp, 25K)
- Tennessee Valley Authority - TVA EPA Addendum II (PDF) (4 pp, 182K)
- Tennessee Valley Authority - TVA EPA Addendum III (PDF) (21 pp, 6.36MB)
- Tri-State Generation and Transmission Association, Inc., Craig Power Station (PDF) (4 pp, 412K)
- Tri-State Generation and Transmission Association Inc. - Escalante Power Station (PDF) (7 pp, 379K)
- Tri-State Generation and Transmission Association, Inc., Nucla Power Station (PDF) (4 pp, 314K)
- Vectren - AB Brown Power Station and FB Culley Power Station (PDF) (9 pp, 644K)
- Western Farmers Electric Cooperative (WFEC) - Hugo Power Station (PDF) (7 pp, 583K)
- Western Kentucky Energy - Coleman Station (PDF) (3 pp, 207K)
- Western Kentucky Energy - Green Station and Reid/HMP&L Station II (PDF) (3 pp, 191K)
- Westar Energy - Jeffrey Energy Center (PDF) (6 pp, 361K)
- Westar Energy - Lawrence Energy Center (PDF) (6 pp, 350K)
- Westar Energy - Tecumseh Energy Center (PDF) (5 pp, 316K)
- Xcel Energy - All Facilities (PDF) (50 pp, 2.4MB)
A
Top of Page | Top of Survey Results
B
Top of Page | Top of Survey Results
C
Top of Page | Top of Survey Results
D
Top of Page | Top of Survey Results
E
Top of Page | Top of Survey Results
F
Top of Page | Top of Survey Results
G
Top of Page | Top of Survey Results
H
Top of Page | Top of Survey Results
I
Top of Page | Top of Survey Results
J - no entries
Top of Page | Top of Survey Results
K
Top of Page | Top of Survey Results
L
Top of Page | Top of Survey Results
M
Top of Page | Top of Survey Results
N
Top of Page | Top of Survey Results
O
Top of Page | Top of Survey Results
P
Top of Page | Top of Survey Results
Q - no entries
Top of Page | Top of Survey Results
R - no entries
Top of Page | Top of Survey Results
S
Top of Page | Top of Survey Results
T
Top of Page | Top of Survey Results
U - no entries
Top of Page | Top of Survey Results
V
Top of Page | Top of Survey Results
W
Top of Page | Top of Survey Results
X
Top of Page | Top of Survey Results
Y - no entries
Top of Page | Top of Survey Results