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10/11/2002 13:06 707-585--?900 VERTEX ENG PAGE 05/13 SITE ASSESSMENT WORKPLAN 757 EAST 11TH STREET TRACY, CALIFORNIA 95604 1.0 PURPOSE AND SCOPE VERTEX Engineering Services Inc. (VERTEX)prepared this Site Assessment Work Plan (Work Plan) on behalf of, Mr. Ronald Robertson of Grating Pacific, Inc. This Work Plan identifies the technical approach and methods recommended to perform site assessment tasks to investigate environmental conditions in groundwater at the site. Work proposed in this plan will be performed in a manner consistent with common professional practices in the California Regional Water Quality Control Board. Tri-Valley Region for similar work scope to meet the stated objectives. The goal of this site assessment is to investigate the potential presence of volatile organic compounds (VOCs) in the groundwater along the western property boundary of the subject The scope of work will include the following tasks: • Drill four, (4) temporary soil borings using Direct Push Technology(DPT); • Collect groundwater samples at each proposed,drilling location; • Analyze groundwater collected from each,location for VOCs; • Report findings to client. 2.0 SITE DESCRIPTION AND BACKGROUND The site is located at the Eastgate Business Park, located at 757 East IIth Street, Tracy, San Joaquin County, California, 95304. The site is comprised of a single, rectangular-shaped. parcel, approximately 2.75 acres in area. The site is located within an industrial area of the City of Tracy, approximately 1 mile northeast of downtown. According to the City of Tracy Planning Department, the site's zoning designation is Industrial Development. The site is located in the northeast quadrant of the intersection of Marian. Court and Stoneridge Drive and is bounded by undeveloped land to the north, a commercial warehouse complex to the east, and Mariani Court and the ,former Heinz Food Plant to the west. Stoneridge Drive and a vacant lot currently under development are located south, of the site. A mesh wire fence delineates the cast perimeter of the site. Fire hydrants were observed on the northwest and southwest quadrants. A metal utility cabinet is located.next to the southeast fire hydrant. Pacific Bell utility vaults are located along the west and south perimeters. A Pacific Gas and Electric Company (PG&E) distribution panel and utility marker are located along the west perimeter. Lampposts are located near the southwest and northwest comers of theroe Two pad- mounted above ground transformers are located near the northwest coater of the site Please refer to Figure I- Site Plan for a depiction of the site. 1