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WASTE DISCHARGE REQUIREMOS ORDER NO. 98-217 -5- COUNTY OF SAN JOAQUIN COUNTY SERVICE AREA NO. 31 FLAG CITY WASTEWATER TREATMENT AND DISPOSAL FACILITY SAN JOAQUIN COUNTY D. Groundwater Limitations: The discharge shall not cause the underlying groundwater to: 1. Be degraded. 2. Contain chemicals, heavy metals, or trace elements in concentrations that adversely affect beneficial uses or exceed maximum contaminant levels specified in Title 22, CCR, Division 4, Chapter 15. 3. Exceed a most probable number of total coliform organisms of 2.2/100 ml over any seven-day period. 4. Exceed concentrations of radionuclides specified in Title 22, CCR, Division 4, Chapter 15. 5. Contain taste or odor-producing substances in concentrations that cause nuisance or adversely affect beneficial uses. 6. Contain concentrations of chemical constituents in amounts that adversely affect agricultural use. E. Provisions: 1. The Discharger shall comply with the Monitoring and Reporting Program No. 98-217, which is part of this Order, and any revisions thereto as ordered by the Executive Officer. 2. The Discharger shall comply with the"Standard Provisions and Reporting Requirements for Waste Discharge Requirements," dated 1 March 1991, which are attached hereto and by reference a part of this Order. This attachment and its individual paragraphs are commonly referenced as "Standard Provision(s)." 3. The Discharger shall apply to the Board for another NPDES permit at least six months prior to the time that alternative discharge arrangements are needed. The Discharger shall submit for Executive Officer approval an engineered report which will provide the basis for timing of the permit application submittal. The report shall be prepared by a Registered Professional Engineer and shall contain a pond capacity evaluation, an analysis demonstrating that all land discharge options will be exhausted, and a proposed flow amount that will trigger submittal of the new permit application. The report shall be submitted for Executive Officer approval no later than 30 April 1999. 4, The Discharger shall use the best practicable cost-effective control technique currently available to limit mineralization to no more than a reasonable increment. 5. In the event of any change in control or ownership of land or waste discharge facilities described herein, the Discharger shall notify the succeeding owner or operator of the existence of this Order by letter, a copy of which shall be immediately forwarded to this office.