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1 <br /> Site Assessment Work Plan - Multi-Level Monitoring Well Installation <br /> • S g <br /> ' RIVER CITY PETROLEUM/CONNELL MOTOR LIFT TRUCK <br /> 2211 North Wilson Way, Stockton, California <br /> ' 1.0. INTRODUCTION <br /> ' At the request of Ms.Heckman of Connell Lift Truck,Advanced GeoEnvironmental,Inc.(AGE)has <br /> prepared this Site Assessment Work Plan for the RIVER CITY PETROLEUM/CONNELL MOTOR <br /> LIFT TRUCK location at 2211 North Wilson Way, Stockton, California. (site). The work plan has <br /> ' been prepared at the request of the California Regional Water Quality Control Board-Central Valley <br /> Region(CVRWQCB)by letters dated 29 November 2004. <br /> ' At the direction of the CRWQCB, the releases which occurred at the site will be mitigation <br /> contemporaneously. The work plan was prepared in accordance with guidelines established by the <br /> CVRWQCB for the subsurface investigation of underground storage tank (UST) sites. The site <br /> location and site plan are illustrated on Figures 1 and 2. Site background information is included for <br /> the stoddard release area is included in Appendix A. <br /> ' The vertical and lateral extent of soil and ground water contamination has been generally defined, <br /> except for low concentrations of the solvent 1,2-dichloroethane(1,2-DCA)west of the former UST <br /> '• dispenser area.The scope of work includes the installation and monitoring of multi-level monitoring <br /> wells west/southwest of the former UST dispensers and west,north, south of the monitoring wells <br /> in the building.Based on the current distribution of the 1,2-DCA,the justification for the work will <br /> ' be to encompass the known 1,2-DCA distribution, both vertically and laterally. The most cost- <br /> effective and sensible method to reduce well installation costs remains the installation of fewer wells, <br /> which will provide adequate information for site assessment and satisfy future closure criteria. <br /> 2.0. SCOPE OF WORK <br /> The proposed scope of work will include the following tasks: <br /> ' • Pre-field work activities; <br /> • Installation of multi-level wells; <br /> ' • Well development, ground water sample collection and analysis and; <br /> • Report preparation <br /> ' 2.1. PRE-FIELD WORK ACTIVITIES <br /> Upon CVRWQCB approval of this work plan, AGE will secure all relevant San Joaquin County <br /> ' Environmental Health Department (EHD)Building permits or regional permits and prepare an <br /> Advanced GcoEnvironmental,Inc. <br />