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i <br /> i <br /> l� <br /> Groundwater Analytical esults (EPA Method 8010) <br /> ° Falrner Unocal Service Station#0123 <br /> 1034 Central Avenue <br /> Tracy, California <br /> EXPLANATIONS. <br /> Laboratory analytical results prior to March 24, 1998,were'compiled from reports prepared by MPDS Services,Inc <br /> Cis-1,2-DCE = Cis-1,2-Dichloroethene <br /> Trans-1,2-DCE = Trans-l,2-Dichloroethene <br /> ppb=Parts per billion <br /> ND=Not Detected <br /> 1 Chloroform was detected at a concentration of 0 77 ppb <br /> I <br /> 2 1,1,1-Tnchloroethane was detected at a concentration of 0 86 ppb <br /> } 11 1 <br /> 1,1-Dichloroethane(1,1-DCA)was detected at a concentration of 0 64 ppb <br /> 4 Methylene chloride was detected at a concentration of 10 ppb <br /> 5 Methylene chloride was detected at a concentration of 15 ppb <br /> 6 1,1-DCA was detected at a concentration of 0 80 ppb' <br /> 7 l,1-DCA was detected at a concentration of 0 82 ppb <br /> 9 1,1-DCA was detected at a concentration of 0 52 pp6 <br /> 9 Chloroform was detected at a concentration of 0 52 ppb <br /> 10 l,1-DCA was detected at a concentration of 0 57 ppb <br /> 11 Methylene chloride was detected at a concentration of 5 6 ppb <br /> 12 Methylene chloride was detected at a concentration of 6 7 ppbI <br /> `i Methylene chloride was detected at a concentration of 8 3 ppbl <br /> i4 Methylene chloride was detected at a concentration of 6 1 1pb1 <br /> 15 Methylene chloride was detected at a concentration of 7 7 ppb <br /> 16 Methylene chloride was detected at a concentration of 7 9 ppb <br /> Note All EPA Method 8010 constituents were ND,except as repo led above <br /> I <br /> ANALYTICAL METHOD. <br /> EPA Method 8010 for Halogenated Volatile Organic Compounds(}iVOCs) <br /> I <br /> i <br /> i <br /> 4 <br /> i <br /> li <br /> 0123 x1s1#280047 i I 4 As of 03/16/00 <br />