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im• SECOR SECOR INTERNATIONAL INCORPORATED www.secorcom January 11,2007 Project No. 140T.08565.01.0001 Ms. Margaret Lagorio San Joaquin County Environmental Health Department 304 East Weber Avenue, Third Floor Stockton, California 95202 Re: Work Plan for Limited Phase II Environmental Site Assessment for Potential Property Transfer Former Wal-Mart Store #1554 3702 East Hammer Lane Stockton, California Dear Ms. Lagorio: SECOR International Incorporated (SECOR), on behalf of Red Mountain Retail Group, Inc. (RMRG), has prepared this work plan to conduct a Limited Phase II Environmental Site Assessment (ESA) of the oil-water separator sump (sump) located within an inactive oil change facility at the referenced site (Figure 1). This work plan has been prepared for submittal to the San Joaquin County Environmental Health Department (SJCEHD) for approval of the proposed Phase II ESA to provide RMRG data of the subsurface conditions adjacent to the sump in response to a potential property transfer to RMRG. SECOR reviewed a Draft Phase I Environmental Site Assessment Report prepared by AEI Consultants (AEI) on behalf of RMRG dated December 8, 2006 for this work plan. Provided below are brief descriptions of site description, site background, proposed scope of work and schedule. SITE DESCRIPTION The site is the location of a former Wal-Mart store located on the northeast corner of the intersection of East Telstar Place and Holman Road, south of East Hammer Lane. The site consists of approximately 12.43 acres and is improved with a single-story concrete masonry building totaling approximately 126,081 square feet and a former oil change facility located along the west side of the main building. The surrounding area is primarily commercial; commercial properties are located to the north with a multi-tenant building, to the south across East Telstar Place by an auto dealership, to the east by Home Deport and a self-storage facility, and to the west across Holman Road by another auto dealership (AEI, 2006). In 1990, the site was developed with the current improvements and was formerly operated as a Wal-Mart store until early 2006. Prior to 1990, the site was utilized for agricultural crops. Currently, the site is occupied by Lifestyle Furniture, as a wholesale furniture store (AEI, 2006). SITE BACKGROUND The former Wal-Mart store operated an oil change facility located along the main building in the southwest portion of the site. The oil change facility operated from November 1991 to early