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SCOPE OF WORK At the request of ExxonMobil Refining and Supply Company (ExxonMobil), ETIC Engineering, Inc. (ETIC) has prepared this work plan for the destruction of seven groundwater monitoring wells (MW1 through MW7) and two vapor extraction wells (VEW1 and VEW2) at Former Exxon Retail Site (RS) 7-0137 located at 1605 South El Dorado Street in Stockton, California (Figure 1). This work plan was prepared pursuant to the Regional Water Quality Control Board no further action required letter dated 6 February 2001 for Former Exxon RS 7-0137, 1605 South El Dorado Street, Stockton, California. A copy of the letter is included as Appendix A. The locations of the wells are shown on Figure 1. The scope of work for the destruction of the wells is outlined below. r.. • Acquire permits for the destruction of groundwater monitoring wells (MW 1 through MW7) and vapor extraction wells (VEWl and VEW2) from San Joaquin County Public Health Services (SJCPHS). t.. • Properly destroy all onsite and offsite groundwater monitoring wells (MWI through MW7) and vapor extraction wells (VEW1 and VEW2). • Prepare a letter report summarizing field activities for the destruction of the onsite and offsite wells and prepare Department of Water Resources (DWR) well destruction forms for submittal. SITE SAFETY PLAN AND PERMITS Fieldwork performed by ETIC personnel or subcontractors of ETIC will be performed in accordance with a site safety plan prepared for the site. The site safety plan will describe basic safety requirements for the work to be done at the site. All ETIC personnel and subcontractors of ETIC working at the site will be required to read and understand the site safety plan before work begins. A copy of the site safety plan will be kept at the work site and will be available for reference by appropriate parties during the work. The ETIC geologist who observes drilling activities will be the acting Site Safety Officer. A portion of the work will be performed in Center Street and South El Dorado Street during the destruction of street wells MW6 and MW7. As MW6 and MW7 are located in City of Stockton w right-of-way, encroachment permit number 66373 was acquired on 12 March 2001 from the City of Stockton Public Works Department (CSPWD). The application for this encroachment permit included the preparation of a traffic control plan, which will be both reviewed and implemented in the field. The revocable permit number 93-02 and associated bond obtained during the installation of wells MW6 and MW7 is current and will be used during the destruction of wells MW6 and MW7. A copy of the encroachment permit and revocable permit are provided as ,r Appendix B, and the traffic control plan is shown on Figure 2. F:1P jects 7013 71M teOWp%WP030 I%TCXIA c 1 I.r