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0 <br />1.0 Introduction <br />This Preliminary Closure and Postclosure Maintenance Plan (PCPMP) has been prepared as part <br />of a permit revision for the vertical expansion to the landfill being proposed by San Joaquin <br />County. <br />1.1 Background and Purpose <br />The purpose of the PCPMP is to provide a basis for closure costs and fulfill related requirements <br />for closure under the conditions of the revised maximum height limit of 320 ft mean sea level <br />(msl). <br />This Plan follows guidelines recommended by the California Department of Resources <br />Recycling and Recovery (formerly the California Integrated Waste Management Board <br />[CIWMB]) to assess reasonableness of cost estimates (California Code of Regulations [CCR] <br />Title 27, Section 21790(x)). This document supercedes the Preliminary Closure and Postclosure <br />Maintenance Plan for the North County Recycling Center and Sanitary Landfill, which was <br />prepared for the landfill in 1990 (County of San Joaquin, 1990) and later amended in the Joint <br />Technical Document (JTD) (Kleinfelder, Inc., 2005) <br />This Plan is based on the 30 Percent Design Report for Vertical Expansion of the North County <br />isRecycling Center and Sanitary Landfill (Shaw Environmental, Inc., 2007). This information is <br />included in this document, as appropriate. <br />[7 <br />1.2 Regulatory Requirements <br />The requirements for a PCPMP are contained in Title 27, CCR. Throughout this document, <br />where section numbers of regulations are cited, they refer to Title 27 CCR. In general, this <br />PCPMP is consistent with Title 27 CCR, Chapter 4, Subchapter 4, Development of Closure/Post- <br />Closure Maintenance Plans, and Title 27, Chapter 3, Subchapter 5, Article 2, Closure and <br />Postclosure Maintenance Standards for Disposal Sites and Landfill. Selected landfill facility <br />construction standards are currently regulated by Title 27 CCR, Chapter 3, Subchapter 2 titled <br />Siting and Design and Article 4 of the same chapter and subchapter titled State Water Resource <br />Control Board - Waste Management Unit Construction Standards. The following provides a list <br />of requirements outlined in Chapter 4, Subchapter 4, for use in the preparation and format of a <br />PCPMP: <br />• 21770(d) CIWMB — Scope and Applicability, (1), (2), and (3) <br />• 21790 <br />CIWMB <br />— Preliminary Closure Plan Contents (b) (1) through (8) <br />• 21820 <br />CIWMB <br />— Closure Cost Estimates (a) through (c) <br />• 21825 <br />CIWMB <br />— Preliminary Postclosure Maintenance Plan Contents (b) <br />• 21840 <br />CIWMB <br />— Postclosure Maintenance Cost Estimates (a) (b) <br />PCMP for NCRCSL 1-1 Department of Public Works/Solid Waste <br />O:ISan Joaquin CounVNCRCSL111804OPCPMPIFina1 ReporAPCPMP_Rev_Jan_2010.Doc County of San Joaquin — January 7, 2010 <br />