SITE INFORMATION AND CORRESPONDENCE

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ORDERNO. 5-00-119 . 4 GENERAL ORDER FOR DISCHARGE OF GROUNDWATER FROM CLEANUP OF PETROLEUM FUEL POLLUTION TO SURFACE WATERS 11. If other constituents of concern are identified as being present or potentially being present in groundwater discharged under this Order,then this Order may be reopened and effluent limits and receiving water limitations may be established for those constituents: Such an action may render discharges permitted by the existing Order as invalid and may necessitate the filing of a new Report of Waste Discharge by each Discharger.operating under this Order. If this Order is reopened and new and/or more stringent effluent limits imposed, a phase-in period may be allowed for existing discharges,if needed,to allow for adjustment.of treatment processes. 12. The U.S. Environmental Protection Agency(EPA) and the Board generally classify this type of discharge as a minor discharge,'If an individual discharge is classified as a major discharge,it willnot be covered by this General Permit. 13. This Order does not pre-empt or supersede the authority of local agencies to prohibit,restrict, or control the discharge.of groundwater cleanup wastewater subject to their control.Discharges. allowed by this order to local storm water collection and conveyance facilities must obtain approval from the agency responsible for operation and maintenance of the facility per D 2 of Attachment A(application requirements). 14. When individual waste discharge requirements are issued to a Discharger otherwise subject to. this Order,the applicability of this Order to the Discharger is automatically terminated on the effective date of the individual Order. 15. The Board adopted a Water Quality Control Plan, Fourth Edition,for the Sacramento and San Joaquin.River Basins and Second Edition,for the Tulare Lake Basin (hereafter Basin Plan). The Basin Plan designates beneficial uses, establishes water quality objectives, and contains in programs and policies to achieve water quality objectives for all waters of the Basin. These requirements implement the Basin Plan..USEPA adopted the National Toxics Rule on 5 February 1993 and the California Toxics Rule on 18 May 2000. These Rules contain water qualitystandards applicable to this.discharge. The State Water Resources Control Board adopted the policy for implementation of Toxics Standards for Inland Surface.Waters, Enclosed Bays, and Estuaries of California (known as the State Implementation Plan),which contains guidance on implementation of the National Toxics Rule and the California Toxics Rule. 16. The designated beneficial uses of groundwater within the Central Valley Region are municipal and domestic,industrial, and agricultural supply, except where lesser beneficial uses are specifically designated in the Water Quality Control Plans.