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�7'd�dfil9" <br /> G <br /> 1396 EAST 13E•.AMER STREET <br /> WOODLAND. CA 95659-9603 <br /> y WTC xES!Ef?N FAX (916) 662-0723 <br /> " 0 CEO <br /> -ENGINEERS ()16) 668-5300 <br /> CALIF.CONTRACTOR#S 13857 A CORPORATION <br /> REGIS!'FRED GEOLOGIS'T'S <br /> 1.0 INTRODUCTION <br /> subleased Regal Service station 603 from Wickiand Oil <br /> Inc. su <br /> EXXON' aseupgthe station with a double contained <br /> Company (WOC) . upgraded s stem. During the removal of the <br /> product storage and dispensing Y cent assessment, gasoline <br /> old underground storage tanks and subseq nboth the <br /> range hydrocarbon contaminaation was <br /> d groundwater found <br /> b o existhesite. <br /> native soil (vadose zone) <br /> 1.1 LOCATION <br /> Stockton, California. The <br /> ' The station iadlointSana�aaquinpCounty,Avenue at the intersection <br /> of Douglas. Road, aquR6E; MDS&M at approximately 12 feet <br /> site lies in section 21; 2, 3, and 3A) . <br /> above mean sea level (MSL) see Figures 1,ssor`s Book 97 an page <br /> parcel is # 31 and can be located in Asse <br /> • 41 (97-041-31) . <br /> (MAY, <br /> 1990 QUARTERLY REPORT) <br /> 1.2 PREVIOUS REPORT <br /> The following are conclStatus�rons eport:and of the May, <br /> 1990, QuarterlyUpdate <br /> CONCLUSIONS <br /> 1 our <br /> 1, Based upon the results <br /> waterfcontaminationcexistsJingmonitor <br /> ground MW-2 MW-3, MW-4, MW-6, MW-8, MW-9, and MW- <br /> wells HW-1,' 10. <br /> 2, The ground water flow direction in activitt1e5east, <br /> northeast, but varies with local pump g <br /> 3. All measurable gasoline product has beer, recovered from <br /> monitor wells MW-1 and MW-3' <br /> 4, No soil contamination exists in mfnit be1owltheWsurface <br /> � <br /> MW-8 from the surface <br /> down 5. Minor soil contamination exists in monitor well MW-9 at <br /> 30 and <br /> 504Leetfeet <br /> tobelow <br /> feetthe <br /> belowsurface <br /> the surface. monitor contaminant <br /> free <br /> from <br /> significant ,oil contamination exists in <br /> 6, gignimonitor well <br /> MW from 40 feet to 50 feet below 'Lhe surface. <br /> 1 <br /> i <br />