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SUMMARY OF GROUND-WATER MONITORING DATA <br /> Third Quarter 1992 _ <br /> ARCO Service Station#434 <br /> 501 West Ketileman Lane,Lodi <br /> (micrograms per liter(ugA) or parts per billion (ppb) <br /> Floating <br /> Well iD Depth toProduct Total TPH as <br /> and Sample Sampling Water Thickness Benzene <br /> Toluene Ethylbenzene Xylenes Gasoline <br /> Depth Date feet feet b b b <br /> W-1A(76) 8118/92 6660 -- 65 ND ND ND 140 <br /> W-2 well obstructed -- '• -- - _ - - -- <br /> W-2A 8118192 DRY -- •- - -- ' " '' "" <br /> W-2B(86) <br /> 8/18/92 6675 -- NO NO NO NO NO <br /> W-3(68) 8/18192 6609 -- 210 <5' 88 <56 1,200 <br /> W-4 8118192 DRY <br /> W-5(69) 8/18192 6556 __ NO ND NO NO NO <br /> W-6(68) 8118/92 6612 -- NO NO NO NO NO <br /> W-7 (69) 8/18192 6549 -- NO ND NO ND ND <br /> W-8(68) 8/18192 6514 - - ND NO NO NO NO <br /> W-9(78) 8/18192 6807 -• 14 ND NO ND ND <br /> W-10(78) 8/18/92 6599 -- 26 NO NO NO 230 <br /> W-11 (79) 8/18/92 6614 - - NO NO NO NO NO <br /> W-12(77) 8/18/92 6609 •• 29 NO ND NO 180 <br /> TPH•Total petroleum hydrocarbons i <br /> ND a Not detected <br /> .liaised MRL due to high analyte concentration requiring sample dulut3on <br /> Sa mplingDoo.071-17.01 <br /> i <br />