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f�= 4. Geolo*cal Audit Services Ind <br /> — �- <br /> v Environmental Professionals <br /> .a. <br /> / now1803 W. March Lane,Suite A• Stockton,CA 95207 •(209)956-0700 • FAX(209)956-0700 <br /> 4 August 1993 <br /> g;gZJYXg (GeoAudit 757—S) <br /> Nis. Glenda Roe AUG. 0 5 1993 <br /> PDM STROCAL <br /> 2324 Navy Drive ENVIRONMENTAL HEALTH <br /> EN <br /> Stockton, CA 95206 PERMIT/SERVICES <br /> Subject: Groundwater Monitoring well sampling <br /> 2324 Navy Drive - Stockton, CA <br /> Dear Ms. Roe: <br /> On July 15, 1993 , representatives of Geological Audit Services, <br /> Inc. (GeoAudit) performed groundwater sampling procedures at the <br /> referenced property. <br /> A three-stage submersible pump was used to purge approximately 5 to <br /> 6 well volumes of water from each well. Temperature, pH and <br /> conductivity were measured at one-gallon intervals and recorded. <br /> The purge water was placed in DOT-approved drums and stored on- <br /> site. <br /> Water tisaniples were then collected from each well using new <br /> disposable plastic bailers. The samples were collected in 40 ml EPA <br /> vials and 1-liter amber bottles. The samples were labeled, logged <br /> on a chain of custody and transported in a chilled container to <br /> Spargex Technology in Sacramento. The sample from monitoring well <br /> 14W-1 was analyzed for TPH as gasoline and BTE&X. The sample from <br /> monitoring well MW-2 was analyzed for TPH as diesel and BTE&X. <br /> No contamination was detected in the two samples collected in this <br /> sampling event. The monitoring well field logs and laboratory <br /> reports are attached. <br /> If you have any questions or comments, please contact our office. <br /> Sincerely, <br /> GLOLOGICAL AUDIT SERVICES, INC. <br /> Bob Ma 111 t'y <br /> Project Geologist <br /> enclosures <br /> c: Mary Meays - PHS/EHD <br /> Full Spectrum Environmental Services• Hydrogeology <br />