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WASTE DISCHARGE REQUIREMENTS ORDER NO.R5-2003-XXXX 3 SHORE TERMINAL SERVICES TERMINAL#29 ENHANCED BIOREMEDIATION PILOT STUDY SAN JOAQUIN COUNTY 10. The Discharger will monitor extraction wells EX-1 and EX-2, injection wells IN-1, IN-2, and IN-3, and monitoring wells PS-1, PS-2, PS-3, PS-4, PS-5, and PS-6 prior to the startup, two weeks after startup, and then monthly until the conclusion of the pilot study as outlined in the attached MRP No. R5-2003-XXXX. In addition, the Discharger will sample downgradient monitoring wells PS/P-11, PS/P-12, and PS/P-13 for baseline concentrations of nitrogen, phosphorus, and potassium prior to startup, as outlined in the attached MRP No. R5-2003-XXXX. These wells are shown on Attachment C, which is attached hereto and made part of this Order by reference. 11. If the nutrient concentrations exceed baseline concentrations by more than five percent in e either extraction well EX-1 or EX-2, a confirmation sample will be collected within 7 days of receiving the results and the Discharger will notify Regional Board staff. If the exceedance of nitrogen, phosphorus, and/or potassium is confirmed, the Discharger will stop injecting and will sample wells PS/P-11, PS/P-12, and PS/P-13, which are located between 70 and 200 feet downgradient of the pilot study extraction wells. Groundwater is estimated to move between 5 and 69 feet per year. Therefore, the soonest the nutrient compounds would be expected to reach these downgradient wells would be in a year following the arrival of these compounds at the location of the extraction wells. The Discharger will sample the downgradient wells at three and six months after the sixth month sampling event in the extraction wells (i.e., one year following the completion of the pilot study). If nitrogen, phosphorus, and/or potassium are detected in the downgradient wells above baseline concentrations, the Discharger will install extraction wells near the downgradient wells and begin extracting to remove the polluted water. The extraction wells will be part of the final remedial design to treat the polluted groundwater. 12. 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 PetroZyme and NutriMax into groundwater subject to specific discharge requirements. ' 13. The Water Quality Control Plan or the Sacramento River and San Joaquin River Basins, Q Y .f 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 Board. Pursuant to Section 13263(a) of the California Water Code, waste discharge requirements must implement the Basin Plan. 14. Surface water drainage is to the San Joaquin River. The beneficial uses of the San Joaquin e River are municipal and domestic supply; agricultural supply; process and service industrial supply; water contact recreation; noncontact water recreation; warm and cold freshwater habitat, migration, spawning, and wildlife habitat. 15. The beneficial uses of underlying groundwater are domestic, municipal, agricultural, and industrial service and process water supply.