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Interim Soil Remediation Report FAST AND EASY MART 244 West Harding Way, Stockton, California 1.0. INTRODUCTION At the request of Mr. Mike Ali of Fast and Easy Mart, Advanced GeoEnvironmental, Inc. (AGE) has prepared this Interim Soil Remediation Report for the property located at 244 West Harding Way, Stockton, California. This report documents the procedures and results from the excavation of hydrocarbon-impacted soil and the collection of soil samples. The location of the site is illustrated on Figure 1. Excavation and sampling point locations are illustrated on Figure 2. This report 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 subsurface investigation of underground storage tank(UST) sites. 2.0. BACKGROUND A gasoline station and mini-mart store has occupied the site for more than ten years. The site is bound 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 (station and store) occupies the southern potion of the site. 2.1. UST REMOVAL On 22 September 1998 two USTs, piping and dispensers were removed from the site by Stockton Service Station Equipment (SSSE). The USTs appeared to be in good condition and had no visible cracks or holes. Approximately 200 tons of soil were excavated during removal of the USTs. Four samples were collected beneath the USTs, one sample was collected beneath the dispenser area and three soil samples that were laboratory-compo sited were collected from the excavated soil. After the UST removal procedures were completed, including collection of soil samples, the stockpiled soil was placed back into the excavation at the direction of the City of Stockton Fire Prevention Department due to strong hydrocarbon odor and the close proximity of a school. Methyl tertiary butyl ether(MTBE) and tertiary butol alcohol (TBA) were detected in soil samples collected from beneath the USTs and dispenser island at concentrations up to 39,000 micrograms per kilogram (ug/kg) and 13,000 ug/kg, respectively; total petroleum hydrocarbon quantified as gasoline (TPH-g) was detected at concentrations up to 1,400 milligrams per kilogram (mg/kg) and benzene, toluene, ethyl benzene and xylenes (BTEX) compounds were detected at concentrations Advanced GeoEnvironmental.Inc.