COMMONWEALTH OF DEPARTMENT OF ENVIRONMENTAL RESOURCES BUREAU OF WASTE MANAGEMENT HighTand Buiiding 121 South HighTand Avenue Pittsburgh, Pennsyivania 15206?3988 - (412) 645-7100 (answers 24 hrs.) March 21, 1989 Mr. WiTTiam A. SteeTe Pennsyivania Power Company Bruce Mansfieid Piant P.0. Box 128 Shippingport, PA 15077-0128 RE: Groundwater Assessment LittTe Biue Run Deve10pment Area I.D. No. 300558 Green Township Beaver County Dear Mr. SteeTe: The Department's technicai staff has reviewed your Tast groundwater monitoring report and noted some areas of concern. Monitoring weTT 1 has a chioride TeveT of 3530 mg/T. This seems abnormaTiy high. Weiis 2, 4A, 9A and 11A aiso have high chioride Teveis. Caicium appears eTevated in weiis 1, 2 and 9A. Since both chioride and calcium can be associated with the waste disposed at LittTe BTue Run the Department requests that you perform or have performed a groundwater assessment study by appropriate statisticai or mathema- ticaT means. The study shoqu determine the trend of groundwater quaiity at your site. This assessment shouid be sent to the Department within thirty (30) days. If you have any questions, piease caTT. Sincereiy, WA 0. K. Hartner Hydrogeoiogist Bureau of Waste Management Southwestern Region bc: A. Oriando J. Jones G. CampbeTT K. Hartner M. MiTTer RegionaT"'T Centrai Chron