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e ar <br /> W <br /> Page 3 <br /> Ms. Mary Meays <br /> July 15, 1991 <br /> • Benzene,Toluene, Ethylbenzenes and Xylenes (BTE&X) EPA <br /> Method 8020; and <br /> • Organic lead-- DHS-specified Method. <br /> Ani i 1 � <br /> The findings from the laboratory testing of soil and ground water samples <br /> are summarized in Table 2. Laboratory reports and chain-of-custody forms <br /> are attached. <br /> Analyses of the soil samples collected from the borings for wells MW-4 and <br /> MW-5 indicated that petroleum hydrocarbons (identified as gasoline)were <br /> present in the soil. BTX&E compounds were also detected in soil samples <br /> from well MW-5. <br /> Analyses of water samples from wells MW-4 and MW-5 indicated that <br /> similar compounds (petroleum hydrocarbons identified as gasoline and <br /> certain E i'Ex compounds) are present in the groundwater. The highest <br /> concentrations are present directly under the location of the former <br /> tan <br /> the <br /> Figure 1 depicts the maximum probable extent of petroleum products <br /> ground water. <br /> P <br /> A Problem Assessment Report(PAR) was requested by San Joaquin County <br /> in a letter dated April 5, 1991. Phone contact with Ms.Diane Hinson of the <br /> j County(June B, 1991)was followed by a letter dated June 12, 1991 requesting <br /> a time extension for the PAR. The reason for this request was that the <br /> results from two additional underground storage tank removals (at 1325 <br /> and 1541 The Countyegr d a time extens on until September 15 1991.vely) are to be ithe report. <br /> Inteli <br /> ERM-West, Inc., on behalf of Catellus Development Corporation, is <br /> currently considering several possible interim remedial measures for the _ <br /> site. The selected interim measure will be targeted at both preventing a <br /> deterioration in site conditions and short-term remediation, pending <br /> completion and acceptance of the PAR. <br />