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Preliminary Site Assessment Work Plan MOORE TRUCK LINES 3400 Newton Road, Stockton, California 1.0. INTRODUCTION At the request of Mr. Eric Weilburg, Advanced GeoEnvironmental, Inc (AGE) has prepared this Preliminary Site Assessment Work Plan for Moore Truck Lines located at 3400 Newton Road, Stockton, California(site). The location of the site is illustrated on Figure 1 -Location Map. A plan of the site is illustrated on Figure 2 - Site Plan. The San Joaquin County Public Health Services-Environmental Health Division(PHS-EHD) has directed the preparation of a work plan to assess petroleum hydrocarbon impacts related to former underground storage tanks (USTs) at the site. This work plan is prepared in accordance with (PHS- EHD)and Central Valley Regional Water Quality Control Board (CVRWQCB) guidelines for the investigation of underground storage tanks (UST) sites. The purpose of the proposed investigation is to evaluate potential petroleum hydrocarbon impacts to the soil beneath the former UST system. This work plan provides a description of the scope of work and procedures for collection of soil samples. 2.0. BACKGROUND The site is located between North Wilson Way and Cherokee Road on Newton Road west of Highway 99. The property is located in a topographically flat area at an approximate elevation of 30 feet above mean sea level in Stockton, San Joaquin County, California. The site is within the northeast quarter of Section 23, Township 2 North, Range 6 East, Stockton West, California (Stockton West Quadrangle, 7.5-Minute USGS Topographic Series, 1968, photo revised 1987). 2.1. SITE DESCRIPTION The site is presently operated as a short-haul trucking and truck repair facility with an office, loading dock and distribution center also on the property. Four USTs were in use at the site for approximately 37 years. 2.2. UNDERGROUND STORAGE TANK REMOVAL Two 5,000-gallon UST9 (Nos. 1 and 2), one 12,000-gallon UST(No. 3), and one 500-gallon UST (No. 4), associated dispensers and product piping were removed from the site on 13 January 1999. The USTs were removed from three separate excavations located near the repair facility. Upon Advanced GeoEnvironmental,Inc.