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Table 2 (continued) <br /> Annual Postclosure Maintenance Cost Estimate <br /> Foothill Sanitary Landfill <br /> San Joaquin County, California <br /> COVER MANITENANCE <br /> 1.Average bid for"earthfill"bid item in 2015 Area 2A construction,x 2 for thinness of layer. Replaces entire ET cap in <br /> 30 years <br /> 2.Average bid for hydroseed in 2015 Area 2A. Hydroseed entire surface in 30-year postclosure <br /> 3. Based on 2015 contract(Barajas Landscaping) <br /> LEACHATE COLLECTION <br /> 4. Based on contract current in 2016(SCS) <br /> 5. Based on contract current in 2016(SCS) <br /> 6. Based on contract current in 2016(BC Labs) <br /> LFG(MIGRATION)MONITORING <br /> 7. Based on contract current in 2016(SCS) <br /> 8. Based on contract current in 2016(SCS) <br /> 9. Based on contract current in 2016(SCS) <br /> LFG CONTROL SYSTEM <br /> 10. Maintenance assumes all items replaced in 30-year period. Costs based on contracts current in 2015, prorated per <br /> acreage of final landfill. <br /> GROUNDWATER AND SURFACE WATER MONITORING-Assume one technician samples 2 days per event. <br /> Assume quarterly sampling for groundwater and bi-annual for surface water. <br /> 11. Based on contract clurrent in 2016(CB&I) <br /> 13. Replacing all wells in 30-year period, using contract current in 2016 <br /> VADOSE ZONE SAMPLING- <br /> 14. Assumes two vadose sampling points per Module. Costs based on contracts current in 2015(SCS) <br /> 15. TO-15 Analysis per contract current in 2015(SCS) <br /> DRAINAGE <br /> 16. Replaces all features in 30-year period, uses costs current in 2015 <br /> SECURITY <br /> 17. Using costs current in 2015(C&R Fence), replaces all fence in 30-year postclosure period <br /> SETTLEMENT ANALYSIS <br /> 18. From Andreg proposal for survey and analysis, current in 2015 <br /> DECOMMISSIONING <br /> 19. All environmental monitoring facilities to remain in place. <br /> OTHER <br /> 20. Based on consultant costs(GeoSyntec)for design of Area 2A at Foothill Landfill 2015 <br /> Foothill Sanitary Landfill Public Works/Solid Waste <br /> Preliminary PCPM Plan Page 2 County of San Joaquin-Revised January 27,2017 <br />