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Interim Soil Remediation Work Plan FAST AND EASY MART 244 West Harding Way, Stockton, California 1.0. INTRODUCTION In accordance with the request of Mr. Jim Cornell of Stockton Service Station Equipment Company (SSSE), Advanced GeoEnvironmental, Inc. (AGE) has prepared the enclosed Interim Soil Remediation Work Plan for the property located at 244 West Harding Way, Stockton, California. The location of the site is illustrated on Figure 1 -Location Map. A plan of the site is illustrated on Figure 2 -Site Plan. This Work Plan is prepared in accordance with San Joaquin County Public Health Services - Environmental Health Division (PHS-EHD) and Central Valley Regional Water Quality Control Board (CVRWQCB) guidelines for the investigation of UST sites. 2.0. BACKGROUND A gasoline station and mini-mart presently occupy the site. Two USTs were removed from the site in September 1998 by SSSE. A new UST system will be installed at the site in November 1998. 2.1. SITE DESCRIPTION The site is bounded on the north by Harding Way. Residential property lies south and west of the site; commercial property lies east of the site. A single structure occupies the southern portion of the site. 2.2. PREVIOUS INVESTIGATIONS It is our understanding that an environmental site assessment was performed on the property in the early 1990s. Field observations indicated that hydrocarbons may have impacted the soil. However, results of the investigation were not made available to the PHS-EHD. 2.3. UNDERGROUND STORAGE TANK REMOVAL Two USTs and associated piping and dispenser island were removed from the site on 22 September 1998. Four samples were collected beneath the USTs, one sample was collected beneath the dispenser area and three laboratory-composited soil samples were collected from the excavated soil. Methyl tertiary butyl ether (MTBE) and tertiary butanol (TBA) were detected in soil samples Advanced Geo£nvironmental,Inc.