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D <br /> WALLACE• KUML <br /> 6 ASSOCIATES INC <br /> 1995 <br /> VV <br /> May 31, 1995 "SMT SERV yF, <br /> /cFs Cltj <br /> Mr Harlin Knoll <br /> San Joaquin County Public Health Services Department <br /> 445 North San Joaquin Street <br /> Stockton, California 95201-2009 <br /> PETITION TO CHANGE <br /> QUARTERLY GROUND WATER SAMPLING ANALYSES <br /> GRANITE CONSTRUCTION <br /> 10500 South Harlan Road <br /> French Camp, California 95231 <br /> WKA No 2088 05 <br /> Dear Mr Knoll, <br /> We are'writing to request a change in the sampling analyses of the eight ground <br /> Geotechnical Engineering water monitoring wells (MW-1 through MW-8) located at 10500 South Harlan <br /> Road in French Camp, California (Plates 1 and 2) <br /> Engineering Geology <br /> Environmental Consulting Analytical results from each quarterly period since March 23, 1993, to the present <br /> indicate that no detectable concentrations of total petroleum hydrocarbons as diesel <br /> Remediation Services <br /> have been detected in water samples collected from the eight monitoring wells <br /> ` Construction Inspection (Table 1) Additionally, the ground water flow direction has remained consistently <br /> to the northwest with an average hydraulic gradient calculated to be 0 003 <br /> Materials Testing feet/foot <br /> Therefore, we propose the discontinuation of analyzing water samples for TPH as <br /> ' 3050 industrial Blvd diesel Water samples will continue to be analyzed for TPH as gasoline using <br /> Modified EPA method 8015 and BTEX using EPA Method 602 <br /> a <br /> West Sacramento <br /> CA 95691 <br /> ` Fax 916 372 2565 <br /> 916 372 1434 <br /> Reo&d raw <br />