SITE INFORMATION AND CORRESPONDENCE_2001-2005

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• TENTATIVE WASTE DISCHARGE REQUIREMENTS ORDER NO. R5-2003-OOXX 4 LINCOLN CENTER ENVIRONMENTAL REMEDIATION TRUST SAN JOAQUIN COUNTY by reference plans and policies adopted by the State Water Resources Control Board (State Board). These requirements implement the Basin Plan. 16. Surface water drainage is to the San Joaquin River. The beneficial uses of the San Joaquin River are municipal and domestic supply; agricultural irrigation and supply; process and service industrial supply; contact recreation; other non-contact recreation; freshwater habitat, migration, spawning, and wildlife habitat. 17. The beneficial uses of underlying groundwater are domestic, municipal, agricultural supply, and industrial service and process 18. Surrounding land uses are commercial and residential. 19. State Water Resources Control Board (SWRCB) Resolution No. 68-16 (hereafter Resolution 68-16 or the"Antidegradation Policy") requires the Board in regulating the discharge of waste to maintain high quality waters of the state until it is demonstrated that any change in 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 Board's policies (e.g., quality that exceeds WQOs). 20. The Board finds that some degradation of groundwater by the GZVI may occur. The discharger has calculated that the complete reduction of PCE in the historical source, based on an average PCE concentration of 9,300 ug/l, would result in an increase in chloride concentrations of 8 mg/l. The additional chloride would result in chloride concentrations below the WQL for chloride and an increase in groundwater TDS levels of about 1 percent. Dissolved iron concentrations may increase although the concurrent production of OH- will result in the precipitation of ferrous hydroxide. Such degradation is consistent with Resolution 68-16 since (1) the purpose of the discharge of GZVI is to accelerate and enhance remediation of the groundwater pollution and such remediation will benefit the people of the state; (2) the discharge as allowed in this Order is a pilot project to evaluate the effectiveness and is limited in scope and duration; (3) this Order requires use of best practicable treatment, including adequate monitoring and contingency plans to assure protection of water quality; and (4) does not allow discharges of waste to exceed water quality objectives other than those temporarily permitted by these WDRs. 21. Section 13267(b) of California Water Code provides that: "In conducting an investigation specified in subdivision (a), the regional board may require that any person who has discharged, discharges, or is suspected of discharging, or who proposes to discharge within its region, or any citizen or domiciliary, or political agency or entity of this state who has discharged, discharges, or is suspected of discharging, or who proposes to discharge waste outside of its region that could affect the quality of the waters of the state within its region shall furnish,under penalty of perjury, technical or monitoring program reports which the board requires. The burden, including costs of these reports, shall bear a reasonable relationship to the need for the reports and the benefits to be obtained from the reports."