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CONTENTS <br /> 1.0 OBJECTIVE....................................................................................................................... 1 <br /> 2.0 BACKGROUND ................................................................................................................. 1 <br /> 3.0 PERIMETER MONITORING NETWORK........................................................................... 1 <br /> A. PERIMETER MONITORING WELLS ................................................................................. 1 <br /> 1. Well Location.................................................................................................................. 1 <br /> 2. Well Spacing...................................................................................................................2 <br /> 3. Well Depths....................................................................................................................2 <br /> 4. Well Construction ...........................................................................................................2 <br /> B. DESIGN CONSIDERATIONS ............................................................................................2 <br /> 1. Local Soil and Rock Conditions ......................................................................................2 <br /> 2. Hydrogeologic Conditions...............................................................................................2 <br /> 3. Locations of Buildings and Structures Relative to the Migration Monitoring Perimeter....3 <br /> 4. Adjacent Land Use and Inhabitable Structures Within 1000 feet of the disposal Site......3 <br /> 5. Man-Made Pathways......................................................................................................3 <br /> 6. Nature, Age of Waste and Potential to Generate Landfill Gas (LFG). .............................3 <br /> C. STRUCTURE MONITORING.............................................................................................3 <br /> D. MONITORING PROCEDURES..........................................................................................3 <br /> 1. Regulatory Limits............................................................................................................3 <br /> 2. Monitoring Methods........................................................................................................4 <br /> 3. Frequency ......................................................................................................................4 <br /> 4. Reporting........................................................................................................................4 <br /> TABLES <br /> Table B-1 — Perimeter Monitoring Soil Gas Wells Spacing <br /> -Table B-2 — Perimeter Monitoring Soil Gas Well Construction Details <br /> FIGURES <br /> Figure B-1 — LFG Migration Monitoring Perimeter Boundary Map <br /> Figure B-2—Typical Triple Probe Soil Gas Monitoring Well <br /> ATTACHMENTS <br /> Gas Monitoring Data Sheets <br /> Monitoring Well Logs <br /> Harney Sanitary Landfill San Joaquin County <br /> Landfill Gas Monitoring Plan i Department of Public Works <br /> Revised July 30,2009 Solid Waste Division <br />