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WALLACE • KUHL r <br /> Er ASSQCIATES INC <br /> November 13, 1995 <br /> Mr John Furman <br /> U S RENTALS <br /> 2081 East Charter Way <br /> Stockton, California 95205 <br /> QUARTERLY STATUS REPORT <br /> 1444 MARIPOSA ROAD <br /> Stockton, California 95205 <br /> WKA No 2938 02 <br /> Dear Mr Furman, <br /> As required by the San Joaquin County Public Health Services - Environmental <br /> Health Division, we are submitting this quarterly status report for the subject <br /> property, located at 1444 Mariposa Road in Stockton, California (Plate 1) <br /> Recent ground water elevation measurements were obtained from the three on-site <br /> Geotechnical Engineering monitoring wells on August 17, 1995, historic ground water elevation data 1s <br /> �; <br /> provided in Table 1 Based on current ground water elevation measurements, the <br /> Engineering Geology ground water flow beneath the subject property is in a easterly direction with an <br /> estimated hydraulic gradient of 0 02 feet/foot (Plate 2) <br /> / Environmental Consulting <br /> ' Remediation Services <br /> Ground water samples were also obtained from die three cin-site monitoring wells <br /> F <br /> Construction Inspection on August 17, 1995 Prior to sampling, the water level in each well was measured <br /> + <br /> 1 and checked for visual signs of free product using a new, clear, disposable <br /> ° <br /> Materials Testing polyethylene bailer No free product was observed in monitoring wells MW 1, <br /> MW2 or MW3, however a moderate to strong petroleum hydrocarbon odor was <br /> reported in MW1 and MW2 The monitoring wells were purged and sampled as <br /> y ` 3050 Industrial Blvd described In Appendix A <br /> i <br /> West Sacramento <br /> k� <br /> CA 95691 Analysis of water sample MW1 revealed detectable concentrations of benzene of <br /> 1 <br /> Fax 916 372 2565 1 5 µgIf Total petroleum hydrocarbons (TPH) as gasoline and diesel and <br /> � \� <br /> 416 372 1434 <br /> Reviled pnper <br />