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CONTENTS <br /> 1.0 OBJECTIVE......................................................................................................................... 2 <br /> 2.0 BACKGROUND ................................................................................................................... 2 <br /> 3.0 MONITORING PERIMETER NETWORK ............................................................................ 2 <br /> I. SOIL GAS WELL...................................................................................................................... 2 <br /> A. Well Location.................................................................................................................... 2 <br /> B. Well Spacing..................................................................................................................... 2 <br /> C. Well Details....................................................................................................................... 3 <br /> D. Well Construction ............................................................................................................. 3 <br /> II. DESIGN CONSIDERATIONS.............................................................................................. 3 <br /> A. General............................................................................................................................. 3 <br /> B. Site Soil Conditions ..........................................................................................................4 <br /> C. Hydrogeologic Conditions.................................................................................................4 <br /> D. Locations of Buildings and Structures Relative to the Migration Monitoring Perimeter....4 <br /> E. Man-Made Pathways........................................................................................................ 4 <br /> F. Nature, Age of Waste and Potential to Generate Landfill Gas (LFG)...............................4 <br /> III. ON-SITE STRUCTURE MONITORING............................................................................... 5 <br /> IV. MONITORING PROCEDURES ........................................................................................... 5 <br /> A. Monitoring Methods.......................................................................................................... 5 <br /> B. Frequency......................................................................................................................... 5 <br /> C. Reporting.......................................................................................................................... 6 <br /> TABLES <br /> Table 1 — Soil Gas Well Sampling Intervals <br /> Table 2 — Soil Gas Wells - Depth <br /> FIGURES <br /> Figure 1 — Migration Monitoring Perimeter Boundary Site Map <br /> Figure 2—Triple Probe Soil Gas Monitoring Well <br /> Figure 3 — Probe Detail-Triple Probe Soil Gas Monitoring Well <br /> Figure 4 — Probe Installation Inside Well Enclosure <br /> APPENDICES <br /> Appendix A— Gas Monitoring Data Sheets <br /> Appendix B —Well Logs <br /> Foothill Sanitary Landfill County of San Joaquin <br /> Landfill Gas Monitoring Plan Department of Public Works <br /> June 25,2010 Solid Waste Division <br />