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TAR 4 <br /> GROUNDWATER ANALYTICAL RESULTS <br /> EPA Method 8260B <br /> 640 N El Dorado Street ' <br /> Page 1 of 1 Pages <br /> (in parts per billion) <br /> Date Sample IDI TBA MTBE I DIFF, ElTBE TAME I 1,2-DCA EDB Chloroform I 1,2 PCF PCE I TCE 1,2-llCR NaPthakne 1,2,4-TMB <br /> 12/20/00 MWl <20 <20 <20 <20 <20 <20 <20 58 29 29 33 <20 <20 <20 <br /> MW2 <20 <2 0 <2 0 <2 0 <2 0 <2 0 <2 0 59 <2 0 23 <2 0 <2 0 <2 0 <2 0 <br /> MW3 <500 <50 <50 <50 <50 <50 <50 <50 <50 <50 <50 87 86 120 <br /> MW4 <20 <20 <20 <20 <20 <20 <20 10 <20 18 <20 <20 <20 <20 <br /> 6128101 MWl <20 <20 <20 <20 <20 <20 <20 47 <20 22 <20 <20 <20 <20 <br /> MW2 <20 <20 <20 <20 <20 <20 <20 28 <20 19 <20 <20 <20 <20 <br /> MW3 Not Sampled due to free product <br /> MW4 <20 <20 <20 <20 <20 <20 <20 <20 <20 15 <10 <20 <20 <20 <br /> 9121101 MWl <20 <20 <20 <20 <20 <20 <20 36 40 18 26 <20 <20 <20 <br /> MW2 <20 <20 <20 <20 <20 <20 <20 34 <20 19 <20 <20 <20 <20 <br /> MW3 Not Sampled due to free product <br /> MW4 <20 <20 <20 <20 <20 <20 <20 40 22 17 <20 <20 <20 <20 <br /> NOTES <br /> TBA = t-Butanol TAME — t Ayml Methyl Ether PCE = Tetrachloroethene <br /> MTBE = Methyl t-Butyl Ether 1,2 DCA = 1,2-Dichloroethane TCE = Trichloroethene <br /> DIPE = Di lsopropyl Ether EDB = Ethylene Dibronnde 1,2-DCB — 1,2 Dichlorobenzene <br /> ETBE = Ethyl-t-Butyl Ether 1,2-DCF. = cis-1 2 Dichloroethene 12,4 TMB 1,2,4 Trimethylbenzene <br /> a _ Concentration is approximate due to mterferenoc of gas range and heavy hydrocarbon range constituents <br /> GW lab xls/VOCs <br />