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.� tttt�� w� �� ■� i II! � I! � � � � <br /> Historical ST i lytical Data <br /> Circle K Store 1205 <br /> 16470 Cambridge Drive <br /> Lathrop,California <br /> Depth of TPH as Ethyl- Tert- <br /> Sample Sample Date Gasoline Benzene Toluene benzene Xylenes MtBE(8260) DIPE ETBE TAME Butanol 1,2-DCA ED8 Methanol Ethanol Lead <br /> Idenificadon (feet) Sampled (ppm) (ppm) (ppm) (ppm) (ppm) (ppm) (ppm) (ppm) (Ppm) (PPM) (ppm) (ppm) (ppm) (ppm) <br /> MW-2 11 8121/1998 5.1 ND ND 0.011 ND 7.2 ND NO 0.015 1.3 NA NA NA NA NA <br /> 25 8121/1998 NO ND ND 0.01 0.052 0.016 ND NO ND NO NA NA NA NA NA <br /> MW-3 5 10/5/1998 NO ND ND ND ND NO ND NO ND ND NA NA NO NO NA <br /> 10 1015/1998 NO NO ND NO ND ND NO NO NO NO NA NA NO ND NA <br /> 16 10/511998 6800 NO 19 46 580 ND ND NO ND ND NA NA NO NQ NA <br /> 21 10/511998 NO NO NO NO ND ND ND NO ND ND NA NA NO NO NA <br /> 26 10!511998 1.6 NO NO 0.01 0,014 NO ND NO ND ND NA NA NO NO NA <br /> MW-4 5 10!511998 NO NO NO NO ND NO ND NO ND NO NA NA NO ND NA <br /> 10 10!511998 NO ND ND ND ND NO ND NO ND ND NA NA NO NO NA <br /> 15 1015/1998 210 1.4 0.44 3 4.5 ND ND NO ND NO NA NA ND ND NA <br /> 21 101511998 NO NO ND NO ND ND ND NO ND ND NA NA NO ND NA <br /> 26 1015/1998 NO ND ND ND 0.01 ND ND NO ND ND NA NA ND ND NA <br /> MW-5 10 1214/2000 31.4 <0.1 <0.1 0.448 3 <1 NA NA NA NA NA NA NA NA NA <br /> 25 1214/2000 2.35 <0.01 0.0556 0.0534 0.228 <0.1 NA NA NA NA NA NA NA NA NA <br /> MW-6 10 1214!2000 4.09 <0.005 <0,065 0.00921 0.0324 <0.05 NA NA NA NA NA NA NA NA NA <br /> T 2012/4/2000 7.14 0.0204 0.116 0.237 0.963 0.202 NA NA NA NA <0.1 <0.1 NA NA <10 <br /> 25 1214!2000 82.2 0.197 0.576 1.54 6.63 <0.25 NA NA NA NA NA NA NA NA NA <br /> MW-7 10 12/4/2000 <1 <0.005 <0.005 0.0053 0.0283 <0.05 NA NA NA NA NA NA NA NA NA <br /> 15 1214!2000 373 <0.5 <0,5 3.32 17.3 <5 NA NA NA NA NA NA NA NA NA <br /> 25 12/4/2000 18.4 0.0605 0.333 0,479 1.65 <0.25 NA NA NA NA NA NA NA NA NA <br /> MW_8 10 121512DD0 <1.0 <0.005 <0.005 <0.005 <0.005 <0.05 NA NA NA NA NA NA NA NA NA <br /> 25 12/5/2000 <1.0 <0.005 <0.005 <0.005 <0.005 <0.05 NA NA NA NA NA NA NA NA NA <br /> MW-9 10 121512000 473 0.852 3.41 11.6 41.3 <5 NA NA NA NA NA NA NA NA NA <br /> 15 1215/2000 102 0.321 0.435 2.82 9.05 <2.5 NA NA NA NA NA NA NA NA NA <br /> 25 12/512DDO <1.0 <0.005 <0.005 0.00977 0.0355 <0.05 NA NA NA NA NA NA NA NA NA <br /> MW-10 Samples not analyzed adjacent to GP- <br /> MW-11Samples not analyzed adjacent to GP-7 <br /> MW-12@15' 15 11!612002 <100 <0.50 <0.50 0.73 3.0 <0.50 <0.50 <0.50 <0.50 <5.0 <0.50 <0,50 NA <20 NA <br /> MW-12@20' 20 1116/2002 <1.0 <0.0050 <0.0050 0.0051 0.0052 0.15 <0.0050 <0.0050 <0.0050 <0.050 <0.0050 <0.0050 NA 0.25 NA <br /> MW-12@25' 25 11/6/2002 <1.0 <0.0050 <0.0050 <0.0050 0.020 0.083 <0.0050 <0.D050 <0.0050 <0.050 <0.0050 <0.0050 NA <.20 NA <br /> MW-13 Samples not analyzed <br /> MWA4 Samples not analyzed <br /> MW-15 Samples not analyze <br /> MW-16@10' 10 9/11/2003 <1.0 <0.005 <0.005 <0.005 <0.005 <0.005 NA_ NA NA NA NA NA <0.50 NA NA <br /> MVV-16015' 15 911112D03 <1.0 <0.005 <0.005 <0.005 <0.005 <0.005 NA NA NA NA NA NA <0.50 NA NA <br /> MW-16@25' 25 9/11/2003 <1.0 <0.005 <0,005 <0.005 <0.005 0.011 NA NA NA NA NA NA <0.50 NA NA <br /> NA Not analyzed or not applicable <br /> NO Not detected <br /> ppm parts per million <br /> MTBE Methyl tert-butyl ether <br /> DIPE Diisopropyl ether <br /> ETBE Ethyl-t-butyl ether <br /> TAME Tert-amyl methyl ether <br /> TPH Total petroleum hydrocarbons <br /> 1,2 DCA 1,2-dicloroethane <br /> EDB Ethylene dibromide <br /> !:Tosco marketing1120511abreslwell instWfttablel.xls Page 2 of 2 <br />