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WASTE DISCHARGE REQUIREMENTS -4- SAN JOAQUIN COUNTY SERVICE AREA 31 AMADOR CORPORATION CALIFORNIA STOP WASTEWATER FACILITY SAN JOAQUIN COUNTY 3. The discharge shall not have a pH less than 6.5 nor greater than 8.5. 4. The average dry weather (May through October) discharge flow shall not exceed 0.25 million gallons/day. 5. The peak wet weather discharge flow shall not exceed 0.85 million gallons/day. C. Sludge Disposal: 1. Collected screenings, sludges, and other solids removed from liquid wastes shall be disposed of in a manner that is consistent with Chapter 15, Division 3, Title 23, of the CCR and approved by the Executive Officer. 2. Within 60 days of initiating the discharge, the Discharger shall submit a sludge disposal plan describing the annual volume of sludge generated by the plant and specifying the disposal practices. 3. Any proposed change in sludge use or disposal practice from a previously approved practice shall be reported to the Executive Officer at least 90 days in advance of the change. 4. Use and disposal of sewage sludge shall comply with existing Federal and State laws and regulations, and with CWA 405(d) technical standards when promulgated. If an applicable management practice or numerical limitation for pollutants in sewage sludge is promulgated under 405(d) of the CWA after issuance of this permit which is more stringent than the sludge pollutant limit or management practice specified in this permit or in existing Federal or State laws or regulations (e.g., 40 CFR part 257), this permit shall be promptly modified or revoked and reissued to conform to the regulations promulgated under Section 405(d) of the CWA. The Discharger shall comply with the limitations by no later than the compliance deadline specified in the applicable regulations as required by 405(d) of the CWA. D. Receiving Water Limitations: Receiving Water Limitations are based upon water quality objectives contained in the Basin Plan. As such, they are a required part of this permit. The discharge shall not cause the following in the receiving water: 1. Concentrations of dissolved oxygen in Highline Canal or Dredger Cut to fall below 5.0 mg/1.