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SUMMARY OF GROUNDWATER MONITORING DATA <br /> Third Quarter 1993 <br /> ARCO Service Station #2130 <br /> 7906 North EI Dorado Street, Stockton <br /> (micrograms per Iter(gg/I), unless noted) <br /> Floating <br /> Well ID Depth to Product <br /> and Sample Sampling Water Thickness Ethyl- Total TPH as <br /> Depth Date (feet) (feet) Benzene Toluene benzene Xylenes Gasoline <br /> MW-1 (73) 7/30/93 6019 - 390 130 38 79 2,100 <br /> I <br /> MW-2(72) 7/30/93 6098 -- 35 2 6 30 15 1,200 <br /> MW-3(73) 7/30/93 6182 -- 15 ND ND ND 89 <br /> MW-4(74) 7130/93 6023 - 220 50 4 5 68 880 <br /> MW-5 (76)* 7/30/03 60 75 - 160 88 19 71 790 <br /> MW-6(73) 7/30/93 6040 ND ND ND ND 170 <br /> MW-7(72) 7/30/93 59 63 - ND ND ND ND ND <br /> TPH=Total petroleum hydrocarbons <br /> ND= Not detected <br /> *= See certified analytical report for additonal data reported by the laboratory <br /> Data reported in this table is consistent with historical results- <br /> SampinibDoc 0671 029 01 <br />