SITE INFORMATION AND CORRESPONDENCE

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• • 3 WASTE DISCHARGE REQUIREMENTS ORDER NO.R5-2003-0166 CONTIGROUP COMPANIES FRENCH CAMP GRAIN ELEVATOR ENHANCED BIOREMEDIATION PILOT STUDY SAN JOAQUIN COUNTY 11. The injection of chemicals into waters of the State is subject to regulation under the California Water Code. This Order authorizes the Discharger to inject HRC®into groundwater subject to specific discharge requirements. 12. The Water Quality Control Plan for the Sacramento River and San Joaquin River Basins, Fourth Edition (hereafter Basin Plan) designates beneficial uses, establishes water quality objectives, contains implementation plans and policies for protecting waters of the basin, and incorporates by reference plans and policies adopted by the State Water Resources Control Board(State Board). Pursuant to Section 13263(a) of the California Water Code, waste discharge requirements must implement the Basin Plan. 13. Surface water drainage is into the San Joaquin River within the legal boundaries of the Sacramento - San Joaquin Delta. The beneficial uses of the Sacramento - San Joaquin Delta are municipal and domestic supply; agricultural supply; process and service industrial supply; water contact recreation; noncontact water recreation; warm and cold freshwater habitat, migration of warm and cold freshwater species, spawning of warm freshwater species, wildlife habitat, and navigation. 14. The beneficial uses of underlying groundwater are municipal and domestic supply, agricultural supply, and industrial process and service supply. 15. Surrounding land uses are commercial and industrial. 16. State Board Resolution No. 68-16 (hereafter Resolution 68-16 or the "Antidegradation Policy")requires the Board in regulating discharges 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 plans and policies (e.g., quality that exceeds water quality objectives). Temporal degradation of groundwater at this site due to the HRC®injection may occur. The temporary degradation allowed by this Order is consistent with Resolution 68-16 since (1) the purpose is to accelerate and enhance remediation of unacceptable concentrations of several waste constituents and such remediation will benefit the people of the state; (2) the discharge facilitates a pilot project to evaluate the effectiveness of cleanup technology in accord with SWRCB Resolution 92- 49 and is limited in scope and duration; (3)best practicable treatment, including adequate monitoring and contingency plans to assure protection of water quality, are required; and (4)the injection will not cause water quality objectives to be exceeded beyond the project target area or the duration of the project as described in Finding 5. 17. 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 having discharged or discharging,or who proposes to discharge within its region,or any citizen