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Summary of Groundwater Analytical Data Wells Date Benzene Toluene Ethyl Total TPH TEPH•' I MTBE DIPE ETBE TAME Tertiary Ethanol Benzene Xylenes Gasoline D,K,Di,M Butanol ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L 3/31/00 ND<.3 ND<.3 ND<.3 ND<.3 ND<50 NIA ND<2 N/A N/A N/A N/A N/A 6/20/00 ND<.3 ND<.3 ND<.3 ND<.3 ND<50 N/A ND<2 NIA N/A N/A N/A N/A East 9/13/96 ND<.3 ND<.3 ND<.3 ND<.3 ND<50 N/A ND<5 N/A N/A N/A N/A N/A Domestic Well 1/17/97 ND<.3 Nb<.3 ND<.3 ND<.3 ND<50 N/A ND<5 N/A NIA N/A N/A N/A 1600"A"D.F. 5/5/97 ND<.3 ND<.3 ND<.3 NO<.3 ND<50 NIA ND<5 NIA NIA N/A NIA N/A 9/19/97 ND<.3 i ND<.3 ND<.3 ND<.3 ND<50 N/A ND<2 ND<2 I ND<2 ND<2 IND<100 ND<500 2/24/98 ND<.3 ND<.3 ND<.3 ND<.3 ND<50 N/A ND<2 NIA N/A N/A N/A NIA 5/29/98 ND<.3 ND<.3 ND<.3 ND<.3 ND<50 N/A ND<2 NIA N/A N/A N/A N/A 11/13/98 ND<.3 ND<.3 ND<.3 ND<.3 ND<50 N/A ND<5 ND<5 ND<5 ND<5 ND<50 N/A 4/28/99 0.37 ND<.3 ND<.3 ND<.3 ND<50 N/A ND<5 N/A N/A N/A N/A N/A 9/1/99 ND<.3 ND<.3 ND<.3 ND<.3 ND<50 N/A ND<5 N/A N/A N/A N/A N/A 12/22/99 ND<.5 ND<.5 ND<.5 ND<.5 ND<50 N/A N/A N/A N/A N/A N/A N/A 3/31100 ND<.3 ND<.3 ND<.3 ND<.3 ND<50 N/A ND<2 NIA N/A N/A N/A N/A 6/20/00 ND<.3 ND<.3 ND<.3 ND<.3 ND<50 N/A ND<2 N/A N/A N/A N/A N/A • East 9/1/99 ND<.3 ND<.3 ND<.3 ND<.3 ND<50 N/A ND<5 N/A N/A N/A N/A N/A Domestic Well 12/22/99 N.S. N.S. N.S. N.S. N.S. N.S. N.S. N.S. N.S. N.S. N.S. N.S. 1600"B" D.F. 3/31/00 N.S. N.S. N.S. N.S. N.S. N.S. N.S. N.S. N.S. N.S. N.S. N.S. 6/20/00 ND<.3 ND<.3 ND<.3 ND<.3 ND<50 N/A ND<2 N/A N/A N/A N/A N/A NorthlWesl 9113/96 NO<.3 ND<.3 ND<.3 ND<.3 ND<50 N/A NA N/A N/A NIA j N/A N/A Domestic Well 1/17/97 ND<.3 ND<.3 ND<.3 ND<.3 ND<50 N/A ND<5 N/A N/A N/A N/A N/A 31448 Hwy 33 5/5197 ND<.3 ND<.3 ND<.3 ND<.3 ND<50 N/A ND<5 N/A NIA N/A N/A N/A 9/19/97 ND<.3 ND<.3 ND<.3 ND<.3 ND<50 N/A ND<2 ND<2 ND<2 ND<2 ND<100 ND<500 2/24/98 ND<.3 ND<.3 ND<.3 ND<.3 ND<50 N/A ND<2 N/A N/A N/A NIA N/A 5/29/98 ND<.3 ND<.3 ND<.3 ND<.3 ND<50 N/A ND<2 N/A N/A N/A N/A N/A 11/13/98 ND<.3 ND<.3 ND<.3 ND<.3 ND<50 N/A ND<5 ND<5 ND<5 ND<5 ND<50 N/A 4/28/99 ND<.3 ND<.3 ND<.3 NO<.3 ND<50 N/A NO<5 N/A NIA N/A N/A N/A 9/1/99 ND<.3 ND<.3 ND<.3 ND<.3 ND<50 N/A ND<5 N/A N/A N/A N/A N/A 12/22/99 ND<.5 ND<.5 ND<.5 ND<.5 ND<50 N/A N/A N/A N/A N/A N/A N/A 3/31/00 ND<.3 ND<.3 ND<.3 ND<.3 ND<50 N/A ND<2 N/A N/A N/A N/A NIA 6/20100 ND<.3 ND<.3 ND<.3 ND<.3 ND<50 FP=Well not sampled because of Floafing gasoline on water table NA=No Analysis • N.S.=Not Sampled =Sample results were not confirmed by EPA 6260 'MTBE Confirmation value by ENTCH Labs. =TEPH-Diesel,Kerosene,Dielectric and Motor Oils DIPE=Di-isopropyl ether ETBE=Ethyl tertiary butyl ether TAME=Tertiary amyl methyl ether Analysis for oxygenate compounds on 9/19/97 was performed bt Sequoia Analytical using EPA 8260. §inol7ulmiuYK 09/25/2000