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Preliminary Site Assessment Work Pian SARALE FARMS 16500 West Clifton Court Road, Stockton, California 1.0. INTRODUCTION At the request of Ms. Sandi Sarale of Sarale Farms Inc.,Advanced GeoEnvironmental,Inc. (AGE) has prepared this preliminary site assessment work plan for the advancement of soil probe borings and sample soil and ground water at 16500 West Clifton Court Road(the site), Stockton,California. The location of the site is illustrated in Figure 1. A plan of the site is illustrated on Figure 2. This work plan is prepared as required by the San Joaquin County Public Health Services - Environmental Health Division(PHS-EHD)by letter dated 28 September 2001 and in accordance with Central Valley Regional Water Quality Control Board (CRWQCB) guidelines for the investigation of underground storage tanks (UST) sites. The purpose of the proposed assessment is to delineate the lateral and vertical extent of petroleum hydrocarbon impact to soil at the site and to assess if ground water for fuel components potentially associated with an unauthorized release of petroleum hydrocarbons. This work plan provides a description of the scope of work and procedures to be used for soil probe boring advancement and collection and analysis of soil and `grab' ground water samples. 2.0. BACKGROUND The site is located in a topographically flat area of Stockton, California(Figure 1), approximately 0.5 miles west of the intersection of West Clifton Court Road and Calpack Road. 2.1. SITE DESCRIPTION The site is presently utilized as a storage and repair facility for agricultural equipment and operations. A portion of the site is occupied by several structures utilized for office space, equipment maintenance and a storage yard. One 10,000-gallon gasoline UST was formerly located on the northern portion of the property. Structures and the former tank location are illustrated on Figure 2. 2.2. UNDERGROUND STORAGE TANK REMOVAL On 07 December 1992, one 10,000-gallon gasoline UST and approximately 100 feet of associated piping were removed from the site by Western Meter Service,Inc. and was transported to Cal Coast Manufacturing Co. for disposal. An Unauthorized Release Report (UAR) was issued by the PHS-EHD on 31 December 1992. The UAR was issued after laboratory analysis of soil samples Advanced GeoEnvironrn ntal,Inc.