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SUMMARY OF GROUND-W�ER <br /> MONITORING DATA • <br /> First Quarter 1993 <br /> ARCO Service Station 2133 <br /> 2906 Benjamin Holt Drive,Stockton <br /> (micrograms per Iter(gg/l),unless noted <br /> Floating <br /> Well ID Depth to Product Total TPH as <br /> and Sample Sampling Water Thickness <br /> Depth Date feet feet Benzene Toluene Eth lbenzene Xylenes Gasoline <br /> PR-1 (27) 1127193 1616 ND NO NO NO NO NO <br /> PR-2(27) 1/27/93 1499 NO NO NO NO NO NO <br /> BHD-1 (27) 1/27193 1527 ND 270 19 790 300 6,700 <br /> 131-10-2(26) 1!27193 1586 NO ND ND NO NO NO <br /> E-2(22) 1/27193 1723 NO 47 94 7 5 7 0 1,900 <br /> E-3 (18) 1/27/93 1669 NO 2,700 180 660 1,900 57,000 <br /> E-4 (21) 1127/93 1672 ND 470 26 130 270 10,000 <br /> E-5 (1 g) 1/27/93 1690 ND 4,000 110 470 800 26,000 <br /> E-6 (18) 1127193 1728 ND 3,300 310 1,000 1,600 27,000 <br /> E-7(18) 1127/93 1548 NO <5' 27 1 6 29 660 <br /> E_8 (23) 1/27/93 15 42 NO 31 <1" 19 18 960 <br /> E-9 (18) 1127193 1610 NO 390 25 310 730 12,000 <br /> E-10(22) 1127193 15.77 ND 2,500 540 1,100 3,100 31,000 <br /> E.11 (23) 1/27193 1768 NO 830 180 390 950 51,000 <br /> E-12(22) 1127193 1626 ND 15 25 1 2 <1`• 380 <br /> TPH=Total petroleum hydrocarbons <br /> NO-Not detected <br /> `=Raised MRL due to matrix interference <br /> "=Raised MRL due to high anatyte concentration requiring sample dilution <br /> OG71-019 01 <br />