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SUMMARY OF GROUND-WATER MONITORING DATA <br /> First Quarter 1992 <br /> ARCO Service Station 2133 <br /> 2906 Benjamin Holt Drive,Stockton <br /> (micrograms per liter(ugA)or parts per billion(ppb),unless noted <br /> Floating <br /> Well ID Depth to Product Total TPH as Fecal <br /> and Sample Sampling Water Thickness Benzene Toluene Ethylbenzene Xylenes Gasoline Coliform <br /> Depth Date feet feet b b b b b CFU/100mt <br /> PR-1 (27) 1122192 1749 NO ND NO NO NO ND -- <br /> PR-2(27) 1122192 1717 ND NO NO NO NO NO -- <br /> 131-113-1 <br /> -BHD-1 (27) 1122192 1712 NO 200 <10 240 260 4,600 <3 8 <br /> BHD-2(28) 1122192 1744 NO NO NO ND NO NO <3 8 <br /> E-2(21 5) 1122192 1947 ND 41 22 14 47 2,400 -- <br /> E-3 -- dry NO -- -- - - -- -- <br /> E-4(21) 1122192 1901 NO 11,100 10 140 220 8,500 -- <br /> E-5 -- 1923 ND •- -- -- -- - - <br /> E-6 -- dry NO -- -- -- •- -- <br /> E-7(19) 1122192 1775 NO 28 23 12 23 860 -- <br /> E-8(23) 1122192 1769 NO 28 21 06 ND 250 <3 8 <br /> E-9 -- 1824 NO -- -- -- - - - - <br /> E-10(22) 1/22192 1794 NO 3,200 3,600 800 3,600 32,000 -- <br /> E-11 (23) 1122192 2000 NO 220 <14 64 120 6,200 -- <br /> E-12(22 5) 1122192 1856 NO 29 <2 5 13 0 8 630 - - <br /> TPH-Total petroleum hydrocarbons <br /> NO• Not detected <br />