Laserfiche WebLink
WALLACE • KUML February 25, 1997 <br /> Er ASSOCIATES INC. <br /> Mr Hop Essick <br /> Granite Construction <br /> Post Office Box 151 <br /> Stockton, California 95201 <br /> QUARTERLY GROUNDWATER MONITORING REPORT <br /> GRANITE CONSTRUCTION FACILITY <br /> 10500 South Harlan Road <br /> French Camp, California 95231 <br /> WKA No 2088 08 <br /> Dear Mr Essick, <br /> We are submitting this quarterly groundwater monitoring report summarizing our <br /> recent work at the above-referenced site (Plate 1) The purpose of our work is to <br /> comply with quarterly sampling requirements requested by the Central Valley <br /> �4 Regional Water Quality Control Board (CVRWQCB) and the San Joaquin County <br /> Geotechnical Engineering Public Health Services Department (SJCPHS) <br /> Engineering Geology <br /> � On January 23, 1997, groundwater samples were obtained from the four monitoring <br /> Environmental Consulting wells (MW1 through MW4) Monitoring wells MW5 through MW7 were not <br /> sampled at the request of Mr Harlin Knoll of SJCPHS Prior to sampling, the wells <br /> Remediation Services <br /> were checked for visual signs of free product by using a clear, Teflon*bailer <br /> Construction Inspection When free product was not observed, the wells were purged and sampled as <br /> Materials Testing described in Appendix A The groundwater samples were analyzed for Total <br /> Petroleum Hydrocarbons as gasohne(TPH g) and diesel (TPH-d) using EPA <br /> method 8015 modified and for Benzene, Toluene, Ethylbenzene, and Xylenes <br /> (BTEX) using EPA method 602 In addition, water samples were analyzed for <br /> 3050 industrial Blvd <br /> Methyl Tertiary Butyl Ether (MTBE) using EPA method 602 <br /> West Sacramento <br /> r CA 95691 <br /> Groundwater measurements indicate groundwater flow direction has changed from <br /> Fax 916 372 2565 <br /> a northwest direction to a southwest direction with a hydraulic gradient of <br /> 916 372 1434 <br /> Recycled paper <br />