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WASTE DISCHARGE REQUIREMENTS ORDER NO. R5-2010-0016 -2- SAN JOAQUIN COUNTY DEPARTMENT OF PUBLIC WORKS NORTH COUNTY LANDFILL SAN JOAQUIN COUNTY maintenance building; scale house; pump station; and a materials recovery facility (MRF), as shown in Attachment B, which is incorporated herein and made part of this Order. 4. The landfill currently consists of three waste disposal modules (M1, M3, and M4) constructed on 53 acres along the western side of the unit, as shown in Attachment B. Seven additional modules (M5 through M11) will be constructed on an as-needed basis on the remaining 132 acres of the unit area. The Discharger currently estimates that Module M5 will be constructed in 2012. The development status of the landfill may be summarized as follows: Module Year Constructed Size, acres Location Status 11 1991 27 NW Inactive 3 1995 14 West-NW Partially Active4 2003 12 West-Central Active 5 - 11 ---2 132 SW, East Half Not yet constructed ______________________ 1. Includes area originally planned for Module 2, which was never constructed. 2. Future modules to be constructed on as needed basis. SUBTITLE D 5. On 9 October 1991, the United States Environmental Protection Agency (USEPA) promulgated MSW landfill regulations under the Resource Conservation and Recovery Act (RCRA) known as “Subtitle D” (Code of Federal Regulations, title 40, part 258). Subtitle D applies to all California Class II and III landfills that both (a) accepted MSW and (b) accepted any waste on or after the effective date of Subtitle D (9 October 1991). Limited exceptions include (a) MSW landfills that ceased accepting wastes prior to the federal deadline (may only be required to comply with the closure requirements); (b) MSW landfills that were constructed prior to the federal deadline (may, to extent of pre-deadline footprint, be exempt from the design requirements); and (c) small rural landfills per 40 CFR 258.1(f) (in California, exempt from the design requirements). WASTE AND UNIT CLASSIFICATION 6. The landfill accepts wastes defined as “inert” and “nonhazardous” under Title 27, sections 20230 and 20220, respectively. The landfill also accepts MSW as defined in Title 27, Section 20164. Recyclable wastes are generally diverted to the MRF. 7. Approximately 400 tons per day (144,000 tons per year) of wastes, including MSW, commercial wastes, and construction and demolition debris, were