SITE INFORMATION AND CORRESPONDENCE 2000-2018

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WASTE DISCHARGE REQUIREMENTS ORDER NO. 5-00-031 • -$- CITY OF LODI WHITE SLOUGH WATER POLLUTION CONTROL PLANT SAN JOAQUIN COUNTY the Basin Plan water quality objective. The State Water Resources Control Board is establishing minimum reporting levels for various constituents regulated by the California Toxics Rule. The minimum reporting limit proposed for lindane is 0.02 µg/l. The reporting level was based on a survey of laboratories throughout the State to determine what levels could be reliably achieved by at least 20% of the labs. Full compliance with the lindane limitation is not required by this Order until 1 May 2004. 29. EPA has proposed adoption of the California Toxics Rule (CTR), which contains water quality standards applicable to discharges in California. Standards for the compounds in the CTR were not included in the National Toxics Rule (NTR). Some of the Standards in the proposed regulations differ from those in the NTR. Once adopted, federal regulations will require effluent limitations for all pollutants that are or may be discharged at a level that will cause or have the reasonable potential to cause, or contribute to an in-stream excursion above a CTR standard. A reopener clause is included in this permit to allow for inclusion of the new standards as they apply to this discharge. 30. Storm water runoff from the wastewater treatment plant is collected and recycled through the treatment system. 31. The California Department of Health Services has established statewide reclamation criteria in Title 22, California Code of Regulations, Section 60301, et seq. (hereafter Title 22) for the use of reclaimed water, and has developed guidelines for specific uses. 32. A few industrial users subject to metal finishing pretreatment standards discharge process wastewaters to the industrial wastewater collection system, for direct discharge to the land disposal areas at the treatment plant. Metal finishing process wastewaters are generally "hazardous wastes" under the federal Resource Conservation and Recovery Act (RCRA) and are prohibited from discharge to land. However, metal finishing process wastewaters discharging to community sewerage systems are generally excluded from being regulated as a hazardous waste under 40 CFR § 261.4, because they are mixed with domestic sewage and other wastes that pass through a sewer system to a publicly-owned treatment works for treatment. The industrial waste collection system does not qualify as a community wastewater collection system under this exclusion, however, as the collection system does not handle domestic wastewater, and the wastewater does not pass through treatment works. Additional study of the metal finishing waste discharges is necessary to verify whether the wastes can be legally discharged to the industrial waste collection system. If the wastes cannot be discharged to the industrial waste system, either the discharges must cease or the wastes must be discharged to the domestic wastewater system. Before the metal processing wastes can be discharged to the domestic wastewater system, the potential impact on the quality of treated wastewater discharged to Dredger Cut and the impact on the City's sludge must be determined and appropriate adjustments made to the industrial pretreatment program and the effluent limits of this Permit. Provision 21 implements these studies and provides a reopener for any necessary adjustments to the Permit.