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SUMMARY OF GROUNDWATER MONITORING DATA <br /> Fourth Quarter 1993' <br /> ARCO Service Station#2130 <br /> 7906 North El.Dorado Street,;Stockton. <br /> (micrograms per liter(6gll), u'nless'riated)' <br /> Floating <br /> Well 11) Depth to Product, <br /> and Sample Sampling Water Thickness Ethyl- Total TPII as . <br /> lu 'i h — [Yale ([eel) _ _ (feet) Benzene ` bluene benzene Xylenes <br /> Gasoline <br /> - -- . <br /> MW-1 (73) 11/29/93 59.29 - 230 12 11 16 1,200 <br /> MW-2(7 1) 11/29/93 60.05 - - 28 3.3 . 18 .4.5 :1 j foo <br /> MW-3 (72) 11/29/93' 60.83 - - 5.1 NO N6 i''.9 120 <br /> - (75) 11/29/93 59.77 - 1,900 870 140 1,340 900 <br /> (:! <br /> W-6.(72) 11/29/93 59.61 - - ND ND ND ND 150 <br /> MW-7(72) 11/29/9-3 58.62 ! - - ND ND ND ND' ND <br /> MW-8(75) 11/29/993 58.56 - ND ND ND ND ND <br /> MW-10.(71): I1/29M 59.30 <11** <3** <i*** 1. 1,M) <br /> Till =Tolal'pcirolei iii i liydrocarbous <br /> ND= Not dctccled <br /> *=Well inaccessibcl dile to gravel,laud,and water caused by construction activities. <br /> **=Raised MRL iiue to'matrix interference. <br /> ***=Raised MRL diiu to high analyte concentration requiring sample diluUan. <br /> SamplingDoc. OG71-029.01 <br />