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WALLACE - KUHL December 3, 1996 <br /> &ASSOCIATES INC <br /> Ms Barbara Jean Drake <br /> 8315 Arroyo Way <br /> Stockton, California 95209 <br /> QUARTERLY STATUS REPORT <br /> 26485 THORNTON ROAD <br /> Thornton, California 95206 <br /> WKA No 2556 04 <br /> Dear Ms Drake, <br /> We are submitting this quarterly groundwater monitoring and sampling report for <br /> the subject property located at 26485 Thornton Road 1n Thornton, California <br /> (Plate 1) The purpose of our work was to comply with groundwater sampling <br /> i requirements requested by the Central Valley Regional Water Quality Control <br /> Board (RWQCB) and County of San Joaquin Public Health Services - <br /> Environmental Health Department (EHD) <br /> r Geotechnical Engineering <br /> On November 20, 1996, groundwater samples were obtained from three on-site <br /> Engineering Geology <br /> monitoring wells MW1 through MW3 (Plate 2) Prior to sampling, the wells were <br /> Environmental Consulting checked for visual signs of free product using clean, disposable polyethylene bailers <br /> ' When no free product was visible, monitoring wells MWi through MW3 were <br /> 1 Remediation Services <br /> purged and sampled as described in Appendix A <br /> � y <br /> Construction Inspection <br /> i <br /> i Materials Testing Based on groundwater elevation measurements, the groundwater flow direction is <br /> to the northwest with a hydraulic gradient of 0 045 feet/foot (Plate 2) A historical <br /> summary of groundwater elevation measurements for the subject site is included as <br /> Table 1 <br /> ! . 3050 Industrial Blvd <br /> West Sacramento Analytical results for the water samples collected from wells MW1 and MW3 <br /> CA 95691 revealed no detectable concentrations of TPH-g or BTEX Analytical results of <br /> Fax 916 372 2565 <br /> } 916 372 1434 <br /> Recycled paper <br />