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WASTE DISCHARGE REQU41MENTS ORDER NO. R5-2004-00280 -47- CITY OF MANTECA, CITY OFLATHROP AND DUTRA FARMS WASTEWATER QUALITY CONTROL FACILITY SAN JOAQUIN COUNTY sanitary sewer overflows, or whenever there is a sanitary sewer overflow. The Discharger shall ensure that the up-to-date SSS Plan is readily available to sewer system personnel at all times and that sewer system personnel are familiar with it. A general order to regulate collection systems may be developed by the Regional Board. If a general order for collection systems is adopted by the Regional Board, the Discharger will be required to seek coverage under the general order. Once the Discharger has obtained a general order for the collection system, this permit may be reopened and these requirements may be removed from this permit. a. At a minimum, the Operation and Maintenance portion of the plan shall contain or describe the following: 1. Detailed maps of the sanitary sewer system, identifying sewer mains, manholes, and lift stations; 2. A detailed listing of elements to be inspected, a description of inspection procedures and inspection frequency, and sample inspection forms; 3. A schedule for routine inspection and testing of all pipelines, lift stations, valves, and other key system components. The inspection/testing program shall be designed to reveal problems that might lead to accidental spills and ensure that preventive maintenance is completed; 4. Provisions for repair or replacement of old,worn out, or defective equipment; 5. Provisions to minimize the need for manual operation of critical systems and provide spill alarms or other"fail safe"mechanisms; 6. The ability to properly manage, operate and maintain, at all times, all parts of the collection system that the Discharger owns or over which the Discharger has operational control; 7. The ability to provide adequate capacity to convey base flows and peak flows for all parts of the collection system the Discharger owns or over which the Discharger has operational control; and 8. How the Discharger will take all feasible steps to stop and mitigate the impact of sanitary sewer overflows in portions of the collection system the Discharger owns or over which the Discharger has operational control. b. At a minimum, the Overflow Prevention and Response Plan shall contain or describe the following: 1. Identification of areas of the collection system that historically have overflowed and an evaluation of the cause of the overflow;