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` u � INFORMATION SHEET 3 r, WASTE DISCHARGE REQUIRMENTS ORDER NO.R5-2003-0100 SPX CORPORATION,MARLEY COOLING TOWER COMPANY IN SITU GROUNDWATER REMEDIATION PILOT STUDY,SAN JOAQUIN COUNTY The antidegradation directives of Section 13000 of the California Water Code require that waters of the State that are better in quality than established water quality objectives be maintained -- "consistent with the maximum benefit to the people of the State." Policies and procedures for complying with this directive are set forth in the Basin Plan (including by reference State Water Board Resolution No. 68-16, "Statement of Policy With Respect to Maintaining High Quality r Waters in California,"or"Antidegradation" Policy). State Board Resolution No. 68-16 (hereafter Resolution 68-16 or the "Anti-degradation 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 r less than that described in the Board's policies (e.g., quality that exceeds water quality objectives). Temporal, short-term degradation of the groundwater by calcium polysulfide/ethanol injection may ` occur in a limited portion of the aquifer near the injection points. Such degradation is consistent with Resolution 68-16 since (a) the purpose of the discharge is to implement the cleanup of groundwater pollution and such remediation will benefit the people of the State; (b)the discharge as allowed in this Order is a pilot project to evaluate the effectiveness and is limited in scope and duration; (c)this Order requires use of best practicable treatment, including adequate monitoring and contingency plans to assure protection of water quality; and(d)this Order does not allow discharges of waste to exceed water quality objectives other than those temporarily permitted by these WDRs. The discharger has proposed a contingency plan to remove injected waste constituents and byproducts using the existing groundwater extraction system in the event groundwater degradation occurs as a result of the discharge. The proposed Order prohibits the discharge of wastes in any manner other than that described in the Findings of the Order, including prohibiting discharge of waste to surface waters or discharge of hazardous waste. The Order requires monitoring and reporting on the progress of the pilot study. The Discharger must obtain Board staff concurrence prior to initiating field activities for Phase 2. r r r