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i <br /> [-01DCOVED <br /> Work Plan Addendum - February 2009 FEB 1 7 2009 <br /> CALIFORNIA FUELS CARDLOCK STATION ENVIRONMENT HEALTH <br /> 2402 Pacific Avenue, Stockton, California PFRMTSFRVICES <br /> TABLE OF CONTENTS <br /> SECTION PAGE <br /> 1.0. INTRODUCTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 <br /> 2.0. SCOPE OF WORK. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 <br /> 2.1. PERMITTING AND PRE-FIELD WORK ACTIVITIES.. . . . . . . . . . . . . . . . . . . 2 <br /> 2.2. DRILLING AND SAMPLING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 <br /> 2.3. INSTALLATION OF SVE REMEDIATION WELLS (IF WARRANTED). . . . . 4 <br /> 2.4. SOIL VAPOR EXTRACTION REBOUND TEST.. . . . . . . . . . . . . . . . . . . . . . . . 4 <br /> 2.5, REPORT PREPARATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 <br /> 3.0. FIELD PROCEDURES.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 <br /> 3.1. PERMITTING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 <br /> 3.2. DRILLING ACTIVITIES. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 <br /> 3.2.1. Soil-Vapor Boring Advancement And Sampling. . . . . . . . . . . . . . . . . . . . 5 <br /> 3.2.2. Confirmation Soil Sample Collection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 <br /> 3.2.3. Soil Vapor Extraction Well Completion. . . . . . . . . . . . . . . . . . . . . . . . . . . 7 <br /> 3.2.4. Well Elevation and Coordinate Survey. . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 <br /> 3.2.5. Soil Vapor Extraction Well Network Connections. . . . . . . . . . . . . . . . . . . 7 <br /> 3.3. SOIL VAPOR EXTRACTION REBOUND TEST.. . . . . . . . . . . . . . . . . . . . . . . . 8 <br /> FIGURES <br /> Figure 1 -Location Map <br /> Figure 2 - Site Plan <br /> Figure 3 - TPH-g Impacted Soil: 15ft-20ft <br /> Figure 4 -Proposed Soil Vapor Extraction Well Construction Details (if necessary) <br /> TABLES <br /> Table 1 -Analytical Results of Soil Samples <br /> Table 2 -Analytical Results of Vapor Samples <br /> APPENDICES <br /> Appendix A - San Joaquin County EHD Directive Letter, dated 12 January 2009 <br /> Advanced GeoEnvironmental,Inc. <br />