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ADDENDUM I FINAL CLOSURE PLAN This Addendum to the Final Closure Plan of the Corral Hollow Sanitary Landfill conforms to the structure of the Final Closure Plan last revised February 1995. 1.0 INTRODUCTION This addendum presents the extension of the closure cap on the north eastern side of Corral Hollow Sanitary Landfill (CHSL) to properly close uncapped refuse discovered in the area in accordance with Title 27 Section 21090. The addendum addresses the sections in the original closure plan that have been modified due to the closure cap extension project. The addendum adheres to Title 27 Section 21790(b)(1) through (b) 8 and Section 21800 content requirements. 2.0 BACKGROUND 2.1 GENERAL CHSL is a closed, unlined Class III landfill located at 31130 South Corral Hollow Road, in southern San Joaquin County, approximately 5 miles south of the City of Tracy, at the intersection of Interstate 580 and Corral Hollow Road (Plan Sheet 1 ). The landfill covers approximately 58 acres, of which 43 acres was permitted disposal area. The remaining area is comprised of access roads, storm water retention ponds, setbacks for environmental monitoring, and firebreaks. Land within 1,000 feet of the facility is used for grazing and agriculture (Plan Sheet 2). The landfill was operated in accordance with Solid Waste Facility Permit issued by San Joaquin County Environmental Health Department (EHD) and the Waste Discharge Requirements order number 94-259 issued by California Regional Water Quality Control Board (CRWQCB). From August 1947 to July 1, 1990, CHSL was owned jointly by the City of Tracy and the County. Per the contract, City of Tracy operated the landfill. Historically, the landfill received solid waste from both the public and contract carriers. The nature of the solid waste was typically domestic refuse, commercial refuse, tires, construction and demolition waste. No hazardous wastes were accepted at the landfill to the knowledge of the County. The County acquired full ownership and A operation of the site on July 1, 1991 by resolution No 90-224. Closure Plan Revised Addendum San Joaquin County Corral Hollow Sanitary Landfill 1 Department of Public Works October 6,2011 Solid Waste Division