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remediation option for the vadose zone. Based span the test results <br /> vapor extraction was selected as the remediation option for <br /> . hydrocarbon impacted soils at <br /> results this site. Sail conditions, the <br /> of the vapor extraction test, and the remediation system <br /> design are addressed in RESNAIS report dated May 31, 1991 entitled <br /> Scimmarly of Soil 2nvestigation\Soil Remediation Plan For Weber Point <br /> Property, 141 North EI Dorado Street, Stockton, California. The SRP <br /> is presently undergoing agency review. <br /> Table I. Laboratory Analytical Resuits - Soil in mg/kg (ppm) <br /> ..- sA!!lPI.6 I.D. , � AIT21•fI,-Benny TOT"ZTIZ1123 - <br /> TouAAVAs - srs av <br /> _. A982-12.2' ND <br /> ND ND NO CaSaUNCE (1) <br /> A3:.1.-20.9• Nb <br /> ND 0.30 0.31 <br /> 589-15.5' 1.1 92 <br /> ,w ND ND Na HD <br /> - 989-30.5' HD <br /> HD ND <br /> ND ND <br /> No HD <br /> ND ND ND <br /> HD HD ND <br /> HD ND <br /> MW5-I6' ND <br /> ND NO ND <br /> MW5-35.5' ND <br /> _ ND HD ND <br /> ND ND <br /> -'•; vPl-25' ND - <br /> - 83 45 . 270 <br /> vpl-31' 3300 <br /> 0.15 0 .. <br /> .15 0.007.. - -0.37 <br /> VP2-16' - 2.4 - <br /> ND 0.008 f1.40fi <br /> f., VAZ-30.5' <br /> ND <br /> ND 0.039 - <br /> - - ND ND ND <br /> vn-15.5• N➢ <br /> y� 0.010 NO <br /> ND :0.006 ND <br /> VP3-30.5' -. 0.008 RD <br /> - - <br /> HD ND 6.010 <br /> ..a DAITdcriON LIMITND - <br /> i 0.005 D.Q05 <br /> Mr <br /> NOTES* 0.005 0.005 1.0 <br /> NPAA,Method S030/8024/602 <br /> (11 EPA Method 5030 and Modified TEPA Method 8015 <br /> -° ND ' Cotpounda Not Detected below Hathod Detection Limit■ <br /> r <br /> Fallowing monitoring well installation and development, all <br /> monitoring wells on site were sampled. All water samples were <br /> laboratory analyzed for BTEX using EPA method 602 and TPH as gasoline <br /> :e using modified EPA method 8015. Laboratory analyses indicates wells <br /> MW1, MW2, MW3, and MW4 containedgasoline hyJrocarbons above method <br /> detection limits. Analyses of water samples_ from wells-MW1,_MW2-and--- ---- -- --- -- - - <br /> MW3 recorded_benzene--concentrations above state mandated Maximum <br /> Contaminant Levels (MCLs). Table 2 summarizes laboratory results and <br /> + the laboratory and <br /> III. chain-of-custod reports are presented is Appendix , <br /> Weber Point Propert; - 47E <br /> H20%AP791.TLP 4 <br /> 17 <br /> 111111ii Oil <br /> -t- <br />