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C [7 Table 1 North County Recycling Center and Sanitary Landfill Vertical Expansion Volumetrics Item Description Quantity (cy) Total Volumel 43,107,000 Fill Capacity2 41,249,000 Remaining Fill Capacity3 35,562,000 Earthwork Perimeter berm4 120,000 Gravel drainage layer 115,000 Operations soil layer 490,000 Daily and intermediate soil covers 5,961,000 Final soil covers 1,253,000 Total soil needs 7,824,000 Soil excavation2 7,963,000 Soil surplus 139,000 1 `Total Volume" is the volume between the upper surface of the vertical expansion (Drawing 1) and the base of all module excavations. This volume includes refuse, daily and intermediate soil cover, final cover, and LCRS and operations soil at the landfill base. 2 "Fill Capacity" is the volume between the underside of the final cover and the surfaces the base liner components. This is the volume in which refuse is placed prior to closure, and includes refuse, daily soil cover, and intermediate soil cover. This volume does not include final cover, the operations soil layer at the landfill base, or LCRS drainage materials. 3 "Remaining Fill Capacity" is the volume between the underside of the final cover and the surfaces of existing refuse fill as of March 13, 2009, and the surface of future base liner components. 4 Berm volume not included in capacity quantities. 5 Based on refuse -to -soil ratio of 5:1. 6 Based on placing an additional 4 -foot thickness of soil over an existing partial soil cover, to achieve the 5 -foot thick final cover over a 185 -acre closure area. Alternative cover profiles using less soil may be proposed. PCMP for NCRCSL 0.1San Joaquin CounVNCRCSL11180401PCPMPIFinal ReporAPCPMP Rev_Jan_2010.Doc Department of Public WorksrSolid Waste County of San Joaquin — January 7, 2010