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WASTE DISCHARGE REQUIREMENTS ORDER NO. -7- KEARNEY-NATIONAL, INC. AND UPRIGHT CONSTRUCTION FORMER KEARNEY-KPF FACILITY GROUNDWATER TREATMENT AND DISPOSAL SYSTEM SAN JOAQUIN COUNTY i. This phase shall last a minimum of three (3)hours. ii. A step test of injection capacity shall be conducted at rates of 100 gallons per minute E (gpm), 200 gpm, and 300 gpm. The test shall last a minimum of one hour at each of these flow rates, or until the water levels stabilize. iii. The injection capacity of the injection wells shall be determined. The observation wells shall be monitored per the potable water start-up phase monitoring plan in the attached Monitoring and Reporting Program (MRP) No. 5-01-XXX. iv. All leaks and/or malfunctions observed during the potable water test shall be corrected. 7 C. Treatment Performance Testing �v After successful completion of the system check and the potable water start-up phase, performance testing shall be conducted to monitor extraction well performance and to determine the effectiveness of the treatment system to meet treatment objectives. The following requirements apply to this treatment performance testing phase. i. The test of this phase shall last a minimum of 200 minutes. The extracted groundwater shall be treated and discharged to on-site holding tanks. Discharge to the injection well is prohibited. ii. Each of the five extraction wells shall be pumped for at least one hour to confirm that the pumps operate properly. iii. Water entering and leaving the air stripping tower and water leaving each GAC, and water pumped from the extraction wells, shall be monitored in accordance with the treatment performance testing monitoring plan in the attached MRP No. 5-01-XXX. iv. All treatment, transport, and disposal components (including pumps, valves, liquid level controllers,pipelines, blowers,flow meters,pressure gauges, etc.) shall be inspected for leaks and/or malfunctions. In addition,the system's automatic controls, including the alarm/notification and shutdown systems, shall be inspected and certified operational. All mechanical equipment shall be operated under load to assure proper performance. Any deficiencies shall be corrected. d. Prove-out of System I The Discharger shall not initiate this phase of the start-up until the requirements of the treatment performance testing have been successfully completed in accordance with Discharge Specifications 1 and 2. The following requirements apply to this phase of prove-out of system. Y i. The prove-out of system phase shall last a minimum of 48 hours. V ii. All extracted groundwater shall be treated by the groundwater treatment facility and discharged to the injection well. E