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WASTE DISCHARGE REQUIREMENTS ORDER R5-2015-0058-01 -3- SAN JOAQUIN COUNTY DEPARTMENT OF PUBLIC WORKS FOOTHILL SANITARY LANDFILL, INC. FOOTHILL LANDFILL SAN JOAQUIN COUNTY landfill closure in the year 2082, LF-2 will consist of 10 waste disposal modules encircling and partially overlapping LF-1. See Attachment F: Conceptual Landfill Development Plan. 8. Each new expansion landfill module will be constructed in phases with initial phases typically consisting of footprint expansion and later phases consisting of vertical development, including LF-1 (Module I) overlap (i.e., filling in between the two landfill units as vertical development proceeds). The first LF-2 module, Module 1 (M-1) is being constructed/developed immediately south of LF-1. The first phase (M-1A) was constructed in 2003 and the second phase (M-1B), consisting of partial LF-1 overlap, was constructed in 2006. The next LF-2 module, M-2, will begin construction in the spring of 2015. 9. The landfill’s operations and development status are summarized as follows: Landfill Module T27 Classification Area (acres) Containment System Operations / Development Status LF-1 M-I Existing Class III 80 Unlined, no LCRS1 Inactive/Partially Closed LF-2 M-1 New Class III 40 Subtitle D Composite liner system & LCRS4 Active M-23 352 Pending construction M-3 -- M- 105 517.52 Future development SI Calaveras SI Class II 1.5 Double geomembrane liner with geocomposite LCRS Pending construction Totals: 12 modules 6742 1. LCRS – leachate collection and recovery system 2. Areas estimated for pending and future modules. 3. First M-2 phase (M-2A) scheduled for construction in spring 2015. 4. Composite liner includes 60-mil HDPE geomembrane overlying geosynthetic clay liner (GCL). LCRS includes 9-inch gravel blanket layer with perforated collection piping to assist drainage to double-lined LCRS sump. 5. Future modules to be constructed on an as-needed basis. See also Findings 89 et seq. herein; Attachment F; and the Information Sheet attached to this Order. 10. Title 27 contains regulatory standards for discharges of solid waste promulgated by the State Water Board and the California Department of Resources Recycling and Recovery (CalRecycle). In certain instances, this Order cites CalRecycle regulatory sections. Title 27, section 20012 allows the Central Valley Water Board to cite CalRecycle regulations from Title 27 where necessary to protect water quality, provided it does not duplicate or conflict with actions taken by the Local Enforcement Agency (LEA) in charge of implementing CalRecycle’s regulations.