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0 <br /> SUMMARY OF GROUND-WATER MONITORING DATA <br /> First Quarter 1993 <br /> ARCO Service Station 2093 <br /> 3425 Tracy Boulevard,Tracy x <br /> (mk=vrams per liter(po),unless noted) <br /> Floating <br /> Well 10 Depth to Product <br /> and Sample Sampling Water" Thickness Total TPH as <br /> Depth Oats (feet) , ,-„ (feet) Benzene Toluene Ethylbenzene Xylenes Gasoline <br /> ATR-1" 1/18193 <br /> ATR-2" 1118193 <br /> ATR-3 -• 1122 001 -- - - - - - - ._ <br /> ATR-4(29) 1119/93 1045 -- 240 55 44 90 1,200 <br /> ATR-5(27) 1119/93 994 -- 25 NO 79 13 1,000 <br /> ATR-6(26) 1118/93 1104 -- NO ND NO NO ND <br /> ATR-7(26) 1119193 1133 -- 10 NO 0 6 05 NO <br /> ATR-8(24) 1/19/93 709 -• 14 17 11 34 980 <br /> ATR-9(24) 1/18/93 1034 -- ND NO NO NO NO <br /> ATR-10(24) 1/18/93 9 61 -- NO NO NO NO NO <br /> ATR-11 (23) 1/16/93 780 -- ND ND NO NO NO <br /> ATR-12(24) 1/18193 832 -- ND NO ND ND ND <br /> TPH-Total petroleum hydrocarbons <br /> ND.Not detected <br /> '-Depth to water measured on 1/18/93 <br /> "ATR-1 &ATR-2 could not be located due to recent parking lot Rmng <br /> i <br />