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PPL companies

Jul y 25, 2013

Ms
. Jezebele Alicea-Virella EPA-Off ice ofWaterjOST/EAD Mail Code: 4303T 1200 Pennsylvania Avenue, N.W
. Washington, D.C. 20460
Dear Ms. Jezebele Alicea-Virella: W.Michacl Winkler Manager, Environmental Programs LG&E and KU Energy LG&E Building 220 West Main Street Louisville, KY 40202 T (502) 627-2338 mi

chael. winkler@.lge

-ku.com

Our facilities provided information that is being used to inform EPA's development of the proposed revision of the effluent limitations guidelines and standards for the steam electric power generating point source (ELG Rule). The facilities listed below either responded to earlier ELG Rule questionnaires to the industry or provided information to you through other means, such as site visits or separate information requests. The specific facilities in question are as follows: Louisville Gas & Electric Co . - Cane Run Station (KY0002062) Louisville Gas & Electric Co.

- Mill Creek Station (KY0003221) Louisville Gas & Electric Co.- Trimble County Station (KY0041971) Kentucky Utilities Co.

- E.W. Brown Station (KY0002020) Kentucky Utilities Co
.. - Ghent Station (KY0002038) Kentucky Utilities Co.

- Green River Station (KY0002011) Kentucky Utilities Co.

- Tyrone Station (KY0001899) We have identified certain record documents which we believe contain information reported by, or derived from data or information reported by, one or more of our facilities. EPA has redacted all or portions of these documents as "confidential business information" (CBI). We are requesting that you provide to us all information related to the facilities listed above (including information that EPA has derived from information obtained from our f acilities and from all other sources, and including facility-specific or facility-derived information in input files to the listed documents) contained within the following documents:EPA-HQ-OW -2009-0819 Short Description Doc
. ID No. (DCN No.)
_ 1959 (DCN SE01825A53) FGD Input Table Curre nt Systems 1959 (DCN SE01825A54) FGD Input Table Planned Systems 1959 (DCN SE01825A55) FGD High Flow Analysis 1959 (DCN SE01825A73) Bottom Ash MDS Conveyance O&M Costs 1959 (DCN SE01825A74) Bottom Ash Intermediate Storage O&M Costs 1959 (DCN SE01825A75) Bottom Ash Wet Sluicing O&M Costs 1959 (DCN SE01825A76) Bottom Ash Remote MDS Capital Costs 1959 (DCN SE01825A77) Bottom Ash Wet Slui cing O&M Costs 1959 (DCN SE01825A78) Bottom Ash Remote MDS Capital Costs 1977 (SE02900) CBI Steam Electric Pollutant Loading Mode l for FGD Wastewater 1984 (SE02899) CBI Steam Electric Pollutant Loadings Model for Ash Transport Water 1986 (SE01756) CBI Future Profile FGD Loads 2104 (SE02897) CBI Steam Electric Cost Model (FGD and Ash Transport Water) 2105 (SE02898} CBI Steam Electric Cos t Model (FGD and Leachate) 2121 (SE03804) CBI Data Dictionary for the FGD and Ash Cost Model 2157 (SE02988) CBI Loads Calculation Database for Options 1, 2, 3, 4, and 5 2159 (SE03508) CBI Loads Calculation Database Future Profile- IPM Only 2191 (SE03879) CBI Bottom Ash Management Determination Calculations 2195 (SE03507) Loads Calculation Database- Questionnaire and IPM 2197 (SE03552) CBI EA Report Calculations Database 2201 (SE03895) CBI Loads Calcu lation Database for Options 3a, 3 b and 4a 2210 (SE02129) CBI Memorandum to the Steam Electric Rulemaking Record: New Source Performance Standards Costing Memorandum and Attachment 2252,2252.1 (SE01957, CBI Incremental Costs and Pollutant Removals for Proposed ELGs SE1957A1) Report and Attachment 2256 (SE01957) CBI Incremental Costs and Pollutant Removals
Please include all information from these documents that relates to our facilities. For example, our facilities supplied information about existing control technologies. Through thi s request, we are requesting not only the control technologies information supplied by our facilitie s, but also control technologies information about our facilities derived from other sources, as well as all EPA-developed information relating to our co ntrol technologies, including EPA's assessments of future technology choices for our facilities based on the various rule options
. For each document, as appropriate, please also include: (1) a legend which explains each column heading and each abbreviation used throughout the entire document; and (2) a list of all formulas applied in the document and a legend for any abbreviations used in the formulas. The legend and formula information is key to understanding th ese documents. We make this request without waiving any of our CB I designations. Because you are providing the information only to us, there is no breach of confidentiality and no waiver of CBI protections. Fu rthermore, we are not requesting CBI information, or CBI-derived information, from other companies that may have furni shed d ata or information appearing in the listed documents. We are requesting only 

### information related to our own facilities.We have done our best to be selective in asking for facility-specific information. The information we are seeking, however, is critical to our review of, and preparation of comments on, the proposed ELG Rule. Please use the mailing address contained on my letterhead to forward a written co py of the requested information. If possible, I would also like to receive an e l ectronic copy of the inf ormation, utilizing my company e-mail address (michael.winkler@lge-ku.com). If you have any questions about this request, please call or e mail me. I look forward to yo ur prompt response. Thank you very much for your help
.

W. Michael Winkler 

### Certification Statemen t

"I certifij underpenalhj of law that Iam a responsible corporate official or his/her authorized representative of Louisville Gas & 

### Electric Co. and Kentucktj Utilities Co. (LG&E and KU Ene rgtj) and am authorized to request confiden tial business information on behalf of my company. I certifiJ that Louisville Gas & 

### Electric Co. and Kentucky Utilities Co. are the majorihJ owners or tire operatorsfor each facilihJ (and for each unit at eachfacilihJ) for which we are requesting confidential business information
. I am aware that there

- may be significant penaltiesfor submitting false information including tire 

### possibilihJ of

fines and imprisonment, pursuant to 

### 18 U.S. C. 

### § 

### 1001. "