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Soil Vapor Survey Work Plan WELDON CHURCH PROPERTY 104 West Beverly Place,Tracy,California 1.0. INTRODUCTION At the request of Mr. Weldon Church, Advanced GeoEnvironmental, Inc. (AGE)has prepared the enclosed work plan for 104 West Beverly Place,Tracy,California(site).The scope of work includes the advancement of fifteen soil borings for the collection of soil and soil-vapor samples to further assess the potential for vapor intrusion of hydrocarbon-impacted soil. The location of the site is illustrated on Figure 1. A plan of the site is illustrated on Figure 2. Site background information is provided in Appendix A. The San Joaquin County Environmental Health Department(SJCEHD)has directed the preparation of a work plan to assess the threat of vapor intrusion inside existing buildings located near the source area. This work plan is prepared in accordance with SJCEHD guidelines for the investigation of underground storage tanks(UST)sites.The work plan was prepared in accordance with the SJCEHD directive letter dated 21 February 2007 (Appendix B). This work plan provides a description of the scope of work and procedures for the advancement of four shallow soil borings and eleven separate soil-vapor borings. 2.0. SCOPE OF WORK AGE proposes to collect soil and soil-vapor samples to determine the lateral extent of petroleum hydrocarbon-impact to soil present beneath the site and assess the threat of vapor intrusion to the building located near the source area. The site assessment will include the following tasks: • Pre-field work activities; • Soil and soil-vapor sample collection and analysis; • Report preparation The closure confirmation site a sessment tasks are discussed below. 2.1. PRE-FIELD WORK TASKS As required by the CVRWQCB,a site specific Health and Safety Plan will be prepared in accordance with Occupational Safety and Health Guidance Manual for Hazardous Waste Site Activities Advanced GeoEnvironmental,Inc.