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r <br /> EMCOR <br /> 1921 Ringwood Avenue •San Jose,California 95131-1721 • (408)453-7300• Fax(408)437-9526 <br /> November 3, 1995 <br /> Project 22074-001.001 <br /> Mr. Binayak Acharya <br /> Nestld USA, Inc. <br /> 800 North Brand Boulevard <br /> Glendale,California 91203 <br /> Re: File review,East Fremont Street, Stockton, California <br /> Dear Mr. Acharya: <br /> This letter presents EMCON's summary of the information from files regarding historical <br /> assessment work performed adjacent to the former oil/water separator at Nestle's East <br /> Fremont Street site, Stockton, California (Site). This information was requested by the <br /> San Joaquin Public Health Department, in conjunction with their review of the revised <br /> remedial action plan for the Site. <br /> The information contained a. map showing the approximate locations of borings B-1 <br /> through B-8. Borings B-1 through B-4 were drilled on September 1, 1985 and borings <br /> B-5 through B-8 were drilled on November 11, 1985. Borings B-1, and B-3 through B-6 <br /> were drilled at approximately 15 degrees from vertical toward the oil/water separator and <br /> borings B-2, B-7, and B-8 were vertical. The approximate locations of these borings are <br /> presented in Figure 1. <br /> Nestld believes no soil samples for chemical analyses were collected from borings B-1 <br /> through B-4. Analytical data for borings B-5 through B-8 and EMCON's borings B-1 and <br /> MW-1 are presented in Table 1. Lead concentrations (up to 10.3 milligrams per kilogram <br /> [mg/kg]) were detected in four of the four samples analyzed. However, the lead <br /> concentrations are all below ten times the soluble threshold limit concentration (STLC) <br /> (less than 50 mg/kg). Samples that contain lead at concentrations below 50 mg/kg are not <br /> hazardous and therefore do not require further testing or remediation. High boiling point <br /> hydrocarbons (HBHCs) at 1,000 mg/kg were detected in boring B-7 at a depth of 10 to <br /> 11.5 feet BGS. HBHCs were not detected in the other samples. Two samples from B-7 <br /> were analyzed for volatile and semivolatile organic compounds (VOCs and SVOCs) by <br /> U.S. Environmental Protection Agency (USEPA) methods 8240 and 8270. No VOCs or <br /> SVOCs were detected. However, hydrocarbons and an unidentified compound (at 0.5 <br /> mg/kg) were detected in the B-7 samples at 10 to 11.5 and 15 to 16.5 feet BGS, <br /> respectively. <br /> I APMPTC00583.DOC-95 Ijt:l <br />