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CORRECTIVE ACTION PLAN December 1996 ' Former Chase Chevrolet (Van Buren) Facility 424 North Van Buren Street ' Stockton, California ' 1.0. INTRODUCTION AND SCOPE OF WORK In accordance with a request from Mr Je#iFiey Setness of Hartmann & Setness, Advanced ' GeoEnvironrnental, Inc (AGE) has prepared this Corrective Action Plan (CAP) for 424 North Van Buren Street, Stockton, California The location of the site is illustrated in Figure 1 - Location Map The layout of existing structures and the locations of monitoring wells are illustrated in Figure 2 - ' Vicinity Map The scope of work was to evaluate the feasibility and cost aspect of several remedial action ' alternatives for hydrocarbon-impacted soil and ground water at the site The CAP was prepared in accordance with guidelines established by the San Joaquin County Public Health Services - Environmental Health Division (PHS-EHD) and the Central Valley Regional Water Quality Control ' Board (CVRWQCB) for investigation of underground storage tank (US f) sites 20 BACKGROUND ' 21 SITE LOCATION AND DESCRIPTION The site occupies the city block bounded by West Fremont Street, North Van Buren Street West Lindsay Street and North Monroe Street Prior to 1994, the site was used as a facility for Chase Chevrolet, a car dealership Two buildings are located on the site (Figure 2 - Vicinity Map) An automotive painting facility currently occupies the larger building on the southern third of the ' property 22 REMOVAL OF UNDERGROUND STORAGE TANKS In 1986, one 1,000-gallon underground storage tank (UST), UST No 7, was removed by Falcon ! Energy Associates (FEA) from an excavation north of the small building Hydrocarbon-impacted soil was encountered beneath the UST during removal Due to the presence of high concentrations of hydrocarbons and the shallow depth to ground water, further assessment investigation was required I