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WASTE DISCHARGE REQUIREMENTS ORDER NO. R5-2008-0148 -19- LAWRENCE LIVERMORE NATIONAL SECURITY, LLC AND THE U.S. DEPARTMENT OF ENERGY FOR LAWRENCE LIVERMORE NATIONAL LABORATORY SITE 300 SAN JOAQUIN AND ALAMEDA COUNTIES 80.The US EPA has promulgated biosolids reuse regulations in 40 CFR 503, Standard for the Use or Disposal of Sewage Sludge, which establishes management criteria for protection of ground and surface waters, sets application rates for heavy metals, and establishes stabilization and disinfection criteria. 81.The Regional Water Board is using the Standards in 40 CFR 503 as guidelines in establishing this Order, but the Regional Water Board is not the implementing agency for 40 CFR 503 regulations. The Discharger may have separate and/or additional compliance, reporting, and permitting responsibilities to the US EPA. 82.The action to revise the WDR for the sewage evaporation and percolation ponds, septic systems, low-threat discharges, mechanical equipment wastewater, and cooling tower discharges is exempt from provisions of the California Environmental Quality Act (Pub. Resources Code § 21000, et seq.) in accordance with CCR, Title 14, Section 15301 for existing facilities. 83.State Board Resolution No. 68-16 (Resolution 68-16) requires the Regional Water Board, in regulating the discharge of waste, to maintain high quality waters of the State until it is demonstrated that any change in water quality will be consistent with maximum benefit to the people of the State, will not unreasonably affect beneficial uses, and will not result in water quality less than that described in the State Water Board's policies (e.g., quality that exceeds water quality objectives). The Regional Water Board finds that the discharge, as allowed in these waste discharge requirements, is consistent with Resolution No. 68-16 since: (1) this Order requires use of best practicable treatment, including adequate monitoring and contingency plans to assure protection of water quality, and (2) this Order does not allow discharges of waste to degrade water quality below background levels, and, where background levels have already been degraded, this Order prohibits any further degradation. If the discharge causes or threatens to cause degradation of water quality to levels that exceed water quality objectives, then the Discharger will be required to cease the discharge, implement source control, change the method of disposal, or take other action. Some localized degradation of groundwater beneath septic systems is indicated in investigations of groundwater quality conducted as part of the CERCLA remedial investigations. Additional monitoring may be necessary to determine if degradation threatens beneficial uses. If beneficial uses are being impacted, the Discharger will need to implement source control for constituents that impact beneficial uses and may be required to undertake remedial actions.