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FUGRO WEST, INC. <br /> Mav 24, 1995 Q 105Q-A4elody Lane,suite 160 <br /> Roseville California 95678 <br /> Project No 9347-301 1 y <br /> Tel (916)782-2110 <br /> FAX (916)786-7830 <br /> Mr Lynn Walker ���Y 3 0 ���!!! <br /> 1995 <br /> Shell Oil Products CompanyE BVI <br /> Concord, CalPost Officeliifornia 94524 43 pE N S�v "-�qLH <br /> ICs <br /> Subject First Quaitei 1995 Grotmd Water Monitonng and Remediation Status Report <br /> Former Shell Service Station (WIC No 204-7524-1509) <br /> 141 N El Dorado, Stockton, California <br /> Dear Mr Walker <br /> Fugro West, Inc , (Fugro) is pleased to^provide Shell Oil Products Company (Shell) the <br /> following report to 1) document the=results of quartoTly gr�oond-,wat'tr momfMn,g, conducted on <br /> February 22, 1995, at the subject site by Maine Tech S�W-4c sS'ai4losd,~California, 2) <br /> provide remediation system monitoring .results and %t> fid`3)� an-a ivi'ties fbr-the next <br /> quarter '` v ` <br /> f � � ,� <br /> Ground water sampling results indic�atg,no detectable dissolved petroleum hydrocarbons <br /> except low concentrations in well MW-33 and.RW-2-')Based on these data, Fugro and Shell are <br /> preparing for remediation system shutdown and site closure <br /> Site remediation systems, consisting of soil venting with granular activated carbon (GAC) <br /> emissions control, ground water pumping with discharge to sewer, and ground water <br /> oxygenation (GO) are currently in operation <br /> Following a brief discussion of current ground water quality, the site information is <br /> included in four attachments Attachment A includes the quarterly ground water monitoring <br /> report Attachment B includes results of soil venting system sampling and monitoring <br /> Attachment C includes a ground water pumping/ sewer discharge sampling report Attachment <br /> D includes dissolved oxygen measurements for the GO system <br /> QUARTERLY SAMPLING RESULTS - AT'T'ACHMENT A <br /> Based on the most recent quarterly ground water sampling event (February 22, 1995), only <br /> wells MW-3 and RW-2 contain any dissolved hydrocarbons Well RW-2 contains the highest <br /> benzene and total petroleum hydrocarbon (TPH) concentrations at 0 0085 and 0 26 parts per <br /> million, respectively <br /> 9147101113%R A member of the Fugro group of companies with offices throughout the world <br />