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Phase II Site Assessment Work Plan FORMER LAIDLAW FACILITY 1444 Tillie Lewis Drive, Stockton, California 1.0. INTRODUCTION At the request of Van De Pol Enterprises,Advanced GeoEnvironmental, Inc. (AGE) has prepared the this Phase II Site Assessment Work Plan for the property at 1444 Tillie Lewis Drive, Stockton, California(the site). The location of the site is illustrated on 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)PHS-EHD) for the procurement of a soil boring permit. The work is being performed as part of a due diligence for a property transfer. The work plan is prepared in accordance with Appendix A to Tri-Regional Recommendations -Reporting, dated 30 August 1991, prepared by the Central Valley Regional Water Quality Control Board(Appendix A- Reports) for the investigation of underground storage tank(UST) sites. 2.0. BACKGROUND The site is located in an industrial area of West Stockton (Figure 1) at an estimated elevation of 5 feet above sea level. The local topography slopes southwest. 2.1. SITE DESCRIPTION The site is located at 1444 Tillie Lewis Road, at the southeast corner of Tillie Lewis Drive and Navy Drive in the city of Stockton, San Joaquin County, California. The property comprises of a single parcel, and is currently occupied by Evergreen Glass, Inc. (Figure 2). 2.2. UNDERGROUND STORAGE TANK REMOVAL On 29 June 1990 one 4,000-gallon xylene UST was removed from the site under permit and inspection of San Joaquin County PHS-EHD.The 4,000-gallon steel UST was observed to be in poor condition with corrosion and pitting at the bottom.Two soil samples were collected beneath the tank at approximately 12 feet below surface grade (bsg). The soil was discolored and had strong petroleum odors. Total petroleum hydrocarbons as gasoline (TPH-g) was present in the soil samples analyzed from beneath the north and south ends of the UST at concentrations of 8,000 milligrams per kilogram (mg/kg) and 47,000 mg/kg, respectively. Advanced GeoEnvironmental,Inc