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WASTE DISCHARGE REQUIREMENTS ORDER R5-2015-0058-01 -42- SAN JOAQUIN COUNTY DEPARTMENT OF PUBLIC WORKS FOOTHILL SANITARY LANDFILL, INC. FOOTHILL LANDFILL SAN JOAQUIN COUNTY b. Landfill Gas condensate as defined as liquid removed from a gas control system at a landfill and which are produced by the condensation of landfill gas being conveyed by that system (Title 27, § 20164). i. Conditionally, in the event that Landfill Gas condensate from LF-1 is discharged into the Calaveras SI unit, the comingled liquid waste cannot be used for reinjection into any waste management unit. c. Leachate as defined as liquid formed by the drainage of liquids from waste or by the percolation or flow of liquid through waste. Includes any constituents extracted from the waste and dissolved or suspended in the fluid (Title 27, § 20164). d. Off-site leachate or landfill gas condensate that meet requirements, including but not limited to Title 27 sections 20090(e) and 20340(g), can be discharged into the Class II surface impoundment with prior approval from Central Valley Water Board. 10. Notwithstanding Section B.9, Landfill Gas condensate and leachate from on- site landfill WMUs shall not be discharged to other WMUs unless approved in writing by the Central Valley Water Board. (See Title 27, § 20340). Collected leachate can be discharged to a different WMU only if: a. the receiving WMU has a LCRS, contains wastes which are similar in classification and characteristics to those in the WMUs from which the leachate was extracted, and has at least the same classification as the unit from which leachate was extracted; b. the discharge to a different WMU is approved by the Central Valley Water Board; and c. the leachate will not exceed the moisture holding capacity of the receiving unit. 11. The Discharger shall comply with all Standard Discharge Specifications listed in Section D of the SPRRs. C. FACILITY SPECIFICATIONS 1. Consistent with Discharge Prohibition A.3, LFG extracted from LF-1 shall be routed through a condensate knock-out sump prior to being commingled with LF-2 LFG, if condensate removed from LF-2 LFG is to be returned to LF-2. 2. Per Title 27, section 21760(b), the Discharger shall develop and implement an operations and maintenance (O&M) plan for the LFG extraction system, as approved by Central Valley Water Board staff, to ensure that LFG from the landfill units is controlled and handled appropriately in accordance with the requirements of this Order and Title 27 regulations. The plan shall include, but not be limited to, a plan for the separate removal and offsite disposal and/or on-site discharge of LFG condensate from LF-1 per Discharge Specification B.6 above. See also