BEFORE THE ILLINOIS POLLUTION CONTROL BOARD

IN THE MATTER OF:

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PROCEDURES REQUIRED BY

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R 07-020

P.A. 94-849 FOR REPORTING

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(Rulemaking - Water)

RELEASES OF RADIONUCLIDES AT

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NUCLEAR POWER PLANTS: NEW 35

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ILL.ADM.CODE PART 1010

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FILING OF COPIES OF REPORTS THE ILLINOIS ENVIRONMENTAL PROTECTION

AGENCY USED IN DEVELOPING THE PROPOSED RULES

NOW COMES the Illinois Environmental Protection Agency (“Illinois EPA”), through one

of its attorneys, and pursuant to the Hearing Officer’s order dated July 9, 2007, hereby files copies

of the following reports:

1.

Hydrogeologic Investigation Report, Fleetwide Assessment, Braidwood Generating

Station, Braceville, Illinois. Prepared for Exelon Generation Company, LLC, by

Conestoga-Rovers & Associates. September 2006.

2.

Hydrogeologic Investigation Report, Fleetwide Assessment, Byron Generating

Station, Byron, Illinois. Prepared for Exelon Generation Company, LLC, by

Conestoga-Rovers & Associates. September 2006.

3.

Hydrogeologic Investigation Report, Fleetwide Assessment, Dresden Generating

Station, Morris, Illinois. Prepared for Exelon Generation Company, LLC, by

Conestoga-Rovers & Associates. September 2006.

4.

Hydrogeologic Investigation Report, Fleetwide Assessment, Quad Cities

Generating Station, Cordova, Illinois. Prepared for Exelon Generation Company,

LLC, by Conestoga-Rovers & Associates. September 2006.

5.

Hydrogeologic Investigation Report, Fleetwide Assessment, Zion Generating

Station, Zion, Illinois. Prepared for Exelon Generation Company, LLC, by

Conestoga-Rovers & Associates. September 2006.

Because the copies of these reports submitted to the Illinois EPA contain information that

is exempt from public disclosure under the Freedom of Information Act (“FOIA”) and regulations

adopted thereunder, and the Hearing Officer has indicated that the reports will be entered into the

Electronic Filing, Received, Clerk's Office, September 17, 2007

* * * * * PC #1) * * * * *

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