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SUMMARY OF GROUNDWATER MONITORING DATA <br /> Second Ouerter 1993 <br /> ARCO Service Station 2093 <br /> 342.5 Tracy Boulevard,Tracy <br /> (micrograms per liter(WO), unless noted) <br /> !Floating <br /> Well ID Depth to Product <br /> and Sample Sampling Water* Thickness Total TPH as <br /> Depth Date Meet feet Benzene Toluene Eth lbenzene Xylenes Gasoline <br /> ATR-1 (26) 4/14/93 1231 -- ND ND 15 ND ND <br /> ATR-2(29) 4/14/93 11.29 -- 38 07 08 19 55 <br /> ATR-3 -- 1149 002 <br /> ATRA(28) 4/15/93 1087 -- 160 42 47 63 810 <br /> ATR-5(26) 4/15/93 1047 -- 1.5 ND 83 09 810 <br /> ATR-6(26) 4/14/93 1142 -- 75 ND ND ND 310 <br /> ATR-7(26) 4/15/93 1175 -- 29 ND ND ND ND <br /> ATR-8(24) 4/15/93 780 42 ND 46 49 110 <br /> ATR-9(24) 4/14/93 1070 -- ND ND ND ND ND <br /> ATR-10(24) 4/14/93 994 -- ND ND ND ND ND <br /> ATR-11 (23) 4/14/93 847 -- ND ND ND ND ND <br /> ATR-12(24) 4/14/93 879 -- ND ND ND ND ND <br /> TPH=Total petroleum hydrocarbons <br /> ND=Not detected <br /> k= to water measured on 4/14193 <br /> Sampling Doc 0071-018 01 <br />