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i <br /> Jul 15, 1994 F RA';;k <br /> WALLACE KUHL Y <br /> &ASSOCIAiTES INC PH 1 + <br /> 16 <br /> Mr Russell Chapin, Sr <br /> Chapin Brothers Investments <br /> 1203 N Carlton Avenue <br /> Stockton, California 95203 <br /> QUARTERLY STATUS REPORT <br /> 1766 MONTE DIABLO AVENUE <br /> Stockton, California <br /> WKA No 2738 01 <br /> Dear Mr Chapin, <br /> As required by the San Joaquin County Public Health Services, we are <br /> submitting this quarterly status report for the subject property located at 1766 <br /> Monte Diablo Avenue, in Stockton, California (Plate 1) <br /> Ground water elevation measurements of three monitoring wells (MW2, <br /> MW3, and MW4) were obtained on June 14, 1994 Historic ground water <br /> elevation data of the four monitoring wells (MW1 through MW4) are provided <br /> in Table 1 Based on ground water elevation measurements, the ground water <br /> � Geotechnical Engineering <br /> flow direction beneath the subject property was calculated as southeasterly <br /> 1 Engineering Geology with a hydraulic gradient of 0 011 feet/foot (Plate 2) <br /> Environmental Consulting <br /> Ground water samples were initially obtained from monitoring wells MW2, <br /> N Remediation Services MW3, and MW4 on June 14, 1994 After comparison with field notes, <br /> however, it was determined that a labeling error had likely taken place during <br /> � <br /> Construction inspection <br /> sampling As a result, analytical data for wells MW3 and MW4 were <br /> i Materials Testing reversed A second set of samples was subsequently obtained on July 1, <br /> 1994 Analytical results from the second sampling event confirmed the initial <br /> error As a result, only the second set of data is presented in this quarterly <br /> j report <br /> 3050 Industrial R d <br /> West Sacramento Prior to sampling, each well was checked for visual signs of free product <br /> CA 95691 using a clear bailer, MW 1 was not sampled due to the presence of free <br /> Fax 916 372 2565 product Approximately three to five well volumes of water were purged from <br /> 916 372 1434 <br /> Recycled paper <br />