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WALLACE - KUHL March 12, 2003 <br /> &ASSOCIATES INC <br /> Mr Harlin Knoll <br /> Geotechnical Engineering San Joaquin County Public Health Services <br /> Engineering Geology 304 E Weber Avenue, Tlurd Floor <br /> Stockton, California 95201-0388 <br /> Environmental Consulting <br /> Remediation Services Groundwater Monitoring and Sampling Report <br /> GRANITE CONSTRUCTION FACILITY <br /> Construction Inspection 10500 South Harlan Road <br /> Materials Testing French Camp, California 95231 <br /> WKA No 2088.09 <br /> On behalf of Granite Construction -French Camp, we are submitting this <br /> groundwater monitoring and sampling report summarizing our recent work at the <br /> above-referenced site (Plate 1) The purpose of our work is to comply with <br /> r quarterly sampling requirements requested by the Central Valley Regional Water <br /> Quality Control Board (CVRWQCB) and the San Joaquin County Public Health <br /> Services Department (SJCPHS) <br /> It <br /> Site Activities <br /> Groundwater Monitoring <br /> i� <br /> Our most recent quarterly groundwater-monitoring event was performed on <br /> November 30, 2001 Monitoring well MW7,which was recently paved over with <br /> CORPORATE OFFICE asphalt, was located and the well cover was exposed for monitoring Depth-to- <br /> 3050 Industrial Boulevard groundwater measurements were obtained in monitoring wells MWl through <br /> West Sacramento <br /> CA 95691 MWg (Plate 2) using an electronic water level indicator. Furthermore, <br /> � Tel 916 372 1434 <br /> Fax 916 372 2565 groundwater in the wells was checked for visual signs of free product and sheen <br /> ROCKLIN OFFICE using clean, disposable polyethylene bailers <br /> 500 Menlo Drive <br /> r <br /> Suite 100 Groundwater samples were obtained from monitoring wells MW1 through MW4 <br /> Rocklin,CA 95765 <br /> Tel 916 435 9722 Prior to sampling,approximately three casing volumes of water were purged from <br /> LI341Fax 916 435 9822 the wells using an electric submersible pump and tygon tubing Groundwater <br /> 0 <br /> STOCKTON OFFICE samples were then decanted unto appropriate sample containers provided by the <br /> West Hammer Lane <br /> • <br /> Suite F <br /> r ,!, Stockton,CA 95219 <br /> y Tel 209 234 7722 <br /> 7 ` Fax 209 234 7727 <br /> Recycled paper <br />