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November 28, 1995 Mr. Russ Vinyard Stockton Mortgage 6820 Pacific Avenue Suite 1B Stockton, CA 95207 Subject: Report of Site Assessment Activities Countryside Market 10848 Copperopolis Road Stockton, CA Project No. 95041 Dear Mr. Vinyard: In accordance with the terms of contract number 95041, Upgradient Er"onmental Consultants has attempted to remediate gasoline-contaminated soil at Countryside Market, located at 10848 Copperopolis Road. The work was conducted on October 31, 1995. Tl a purpose of this letter is to report the results of the investigation. We will forward a copy directly to Mr. Steve Sasson at San Joaquin County Environmental Health. INTRODUCTION In August 1995, Upgradient Environmental Consultants, under contract to Stockton Mortgage Co., submitted a workplan to assess the extent of soil contamination at Countryside Market. At the request of Stockton Mortgage, Upgradient submitted an addendum to the workplan on October 9, 1995. The addendum was approved by Mr. Steve Sasson of San Joaquin County Public Health Service, Environmental Health Division(PHS/EHD). PREVIOUS WORK Countryside Market is located in eastern San Joaquin County, approximately two miles east of the city limits of Stockton (Figure 1). It is our understanding that two 1000-gallo'p leaded gasoline tanks were removed from the site in March, 1993 (Figure 2). After removal, the excavated soil was returned to the tank cavity, but the site was not re-paved. Four soil samples were collected from beneath the tanks and analyzed for petroleum hydrocarbons in the gasoline range (TPH-g), BTEX, ethylene dibromide (EDB), and total lead. Concentrations of 770 to 6,500 mg/kg TPH-g were detected, and BTEX, EDB, and lead were detected at elevated concentrations in one or more samples. Because the levels exceeded approved concentrations, further assessment of the extent of contaminated soil was reqeusted by PHS/EHC . �II,�I�II��D DEL' 0 6 1995 EMpEEMRI5Ef2 IICEES�