ARCHIVED REPORTS_2001_2 - Laserfiche WebLink

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WASTE DISCHARGE REQUIREMENTS -13- FORWARD INC.,FORWARD LANDFILL SAN JOAQUIN COUNTY GENERAL WMU CONSTRUCTION 10. All containment systems shall include a leachate collection and removal system (LCRS) which shall convey all leachate which reaches the liner to an appropriately lined sump or other appropriately lined collection area. The LCRS shallnot rely upon unlined or clay- lined areas for such.conveyance. 11. Clay liners shall have a hydraulic conductivity of 1 x 10,cm/sec or less and a minimum relative compaction of 90 percent. Landfill cap clay barrier layers shall have a hydraulic conductivity.of 1 X 10' cm/sec or less and a minimum relative compaction of 90 percent. Hydraulic conductivities of liner materials shall be determined by laboratory tests using smindons with similar-properties as the fluids that will be containecL Hydraulic conductivities of cap materials shall be determined by laboratory tests using water. Hydraulic conductivities.determined through laboratory methods shall be confirmed by field testing in accordance with the Standard Provisions and Reporting Requirements as describers in Provision£:1. '12. "LCM9 shallbe designed-, constructed, and ° ed--to-collect " ed- daily volume of leachate generated by the WMU and to prevent the buildup of hydraulic head on the underlying liner at,any"time. The-depthof#luid in any,,LCRS sump-shall be maintained as low as feasible. The pump shall be operated as necessary to prevent excess accumulation of leachate in the sump. PROTECTION FROM STORM EVENTS 13. Precipitation and drainage control systems shall,be desigried and=nstructed to accommodate the anticipated volume of precipitation and peak flows from surface runoff as follows: Classification Storm Size Class I WMUS Probable maximum precipitation Class H WMUs 1,000-year, 24-hour Class III WMUs 100-year, 24-hour 14. Waste management units shall be designed, constructed, and operated in compliance with precipitation and flood conditions contained in the Standard Provisions and Reporting Requirements referenced in Provision E.1, below.