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TABLE 2 <br /> ADDITIONAL MAINTENANCE COSTS <br /> Associated with Planned Improvements Through 2013 <br /> Including Closure Cap Expansion, LFG Collection System,and Additional Groundwater Monitoring Wells <br /> Calc <br /> 1 Revegetation and Erosion Control <br /> Cost for revegetation and erosion control of initial closure area: $ 3,000 Per year <br /> Increase in area due to extension of closure cap 4% <br /> Increase in maintenance cost due to extension of closure cap $ 120 Per year <br /> 2 Landfill Gas Collection Maintenance and Monitorinq <br /> Lump sum cost to monitor and adjust existing LFG system: $ 1,200 Per month <br /> (Existing 44 wells and 7 monitoring points as of January 2012) 51 Points <br /> Monitoring cost per well and other monitoring points: $ 24 Per points <br /> Additional Wells and Horizontal Collectors (Installed 2012-2013): 9 Points <br /> Adjustment and Monitoring cost of additional LFG system points: $ 212 Per month <br /> Additional LFG system collection and monitoring cost: $ 2,541 Per Year <br /> 3 Final Cover Maintenance <br /> Closure cap extension area final cover maintenance cost: $ 8,800 Per year <br /> Increase in area due to extension of closure cap: 4% <br /> Increase in maintenance cost due to extension of closure cap: $ 352 Per year <br /> 4 Drainage System Maintenance <br /> Final cover maintenance cost of initial area: $ 5,000 Per year <br /> ' Increase in area due to extension of closure cap: 4% <br /> Increase in maintenance cost due to extension of closure cap: $ 200 Per year <br /> 5 Inspection-Final Cover and Drainage Rate (Per hour) Duration (hour) <br /> Inspection by Engineer: $100 1 <br /> Vehicle Cost: $20 1 <br /> No of Annual Inspections: 12 <br /> Additional Inspection Cost $ 1,440 Per Year <br /> 6 LFG Perimeter Migration Monitoring <br /> Contractor bid to monitor 7 existing wells: $ 795 Per quarter <br /> Unit Monitoring cost: $ 114 Per well <br /> Additional monitoring cost for 2 additional wells: $ 909 Per year <br /> t7 Surface LFG Emission Monitorinq <br /> Annual surface scan costs per Contractor bid: $ 25 Per Acre(100ft On Center) <br /> Closure Cap Extension area: 1.6 Acres <br /> Additional annual surface emission monitoring cost: $ 40 <br /> Postclosure Plan Addendum San Joaquin County <br /> Corral Hollow Sanitary Landfill Department of Public Works <br /> N11Corral HollowXCH Closure&PCMP E-DoosWinal CLOP&PCMP Addendum Rev Oct 2012TCMPIPCMP Add Rev 2 Oct 2012.)du Solid Waste Division <br />