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WALLACE • KOHL <br /> RECEIVEDEr <br /> ASSOCIATES INC. <br /> February 5, 1996 FEB — 7 1996 <br /> ENVIRONMENTAL HEALTH <br /> Mr Gary Weinberger PERMIT/SERVICES <br /> JVM Associates <br /> 5601 W Mohave <br /> Phoenix, Arizona 85031 <br /> QUARTERLY STATUS REPORT <br /> 781 SWIFT WAY <br /> Stockton, California 95206 <br /> WKA No 1735 02 <br /> Dear Mr Weinberger, <br /> As requested by the San Joaquin County Public Health Services, we are submitting <br /> this quarterly status report for the subject property, located at 781 Swift Way in <br /> Stockton, California (Plate 1) <br /> Ground water elevation measurements of the five existing monitoring wells (MW1 <br /> r` Georechnical Engineering through MW5) and one new monitoring well (MW6) were taken on January 8, 1996, <br /> historical ground water elevation data is provided in Table 1 Based on previous <br /> Engineering Geology <br /> \ " ground water elevation measurements obtained March 21, 1995, the ground water <br /> y Environmental Consulting <br /> ..,i flow direction has changed from a southeasterly direction to a nearly due easterly <br /> Remediation Services <br /> direction with a hydraulic gradient of 0 005 feet/foot (Plate 2) <br /> l Construction Inspection <br /> Ground water samples were also obtained from the six on-site monitoring wells on <br /> j Materials Testing <br /> January 8, 1996 Prior to sampling, the water level in each well was measured and <br /> checked for visual signs of free product using a clear bailer Approximately three <br /> well volumes of water were purged from each well using a two-inch diameter <br /> submersible pump until temperatuie, pH, and conductivity readings stabilized and/or <br /> r. <br /> j 3050 Industrial Blvd the water cleared of sediment The water samples were then collected using a new <br /> West Sacramento polyethylene disposable bailer Water from the disposable bailer was decanted into <br /> y <br /> k CA 95691 appropriate sample containers provided by the laboratory <br /> Fax 916 372 2565 <br /> 916 372 1434 <br /> Recycled paper <br />