Illinois Environmental Protection Agency1021 North Grand Avenue E.
P.O.
Box 19276
Springfield, Illinois 62794-9276Re: Request for Beneficial Use DeterminationDear Mr.
The Agency
approved our request for a beneficial use determination for that portion ofthe project on September30,2008.
AERG's site-specific investigation found that much ofthe fill was
placed over coal mine spoils, and there are no exceedances of applicable groundwater qualitystandards. The capthickness varies from the design thickness to more than 20 feet depending on the location. As explained in AERO'sJuly 29, 2004, lette...
Allowed
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