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REVISED WASTE DISCHARGE REQUIREMENTS ORDER NO. 97-115 9 <br /> CITY OF MANTECA AND CITY OF LATHROP <br /> WASTEWATER QUALITY CONTROL FACILITY <br /> SAN JOAQUIN COUNTY <br /> 5. Survival of aquatic organisms in 96-hour bioassays, diluted 2.8 parts River water to 1 part <br /> waste water effluent, shall be no less than: <br /> Minimum for any one bioassay- - - - - - - - - 70% <br /> Median for any three or more consecutive bioassays - - - - 90% <br /> 6. The maximum effluent temperature shall not exceed the natural receiving water by more than <br /> 20°F. <br /> 7. The 30-day average dry weather discharge flow shall not exceed 6.95 mgd prior to <br /> completion of the 8.11 mgd facility, and after completion of the expanded facility flow shall <br /> not exceed 8.11 mgd, less the amount disposed of to land at agronomic rates. <br /> D. Sludge Management Specifications: <br /> 1. The Discharger shall maintain an approved Sludge Management Plan and operate according <br /> to that plan. This plan and any revisions shall be approved by the Executive Officer. <br /> 2. The Sludge Management Plan shall deal with collected screening, sludges, and other solids <br /> removed from liquid wastes and these wastes shall be disposed of in a manner that is <br /> consistent with Title 23, Division 3, Chapter 15 of the California Code of Regulations <br /> (CCR). The plan shall include information regarding annual sludge production and percent <br /> solids, a description of sludge treatment processes, and a description of disposal methods. <br /> 3. Use and disposal of sewage sludge shall comply with existing Federal and State laws and <br /> regulations, and the Clean Water Act(CWA) Section 405(d)technical standards when <br /> promulgated. <br /> 4. The sludge reused for agricultural land application as described in Finding 4, shall not exceed <br /> crop utilization rates, or rates which cause specific constituents to exceed single, annual, or <br /> lifetime application limits based on: <br /> a. 40 CFR 503, Standards for the Use or Disposal of Sewage Sludge; <br /> b. Department of Health Services, California Manual of Good Practice for Landspreading <br /> of Sewage Sludge; <br /> c. Nitrogen demand of the crop; and <br /> d. Phytotoxicity. <br /> 5. Application of sludge at rates in excess of the nitrogen requirements of the vegetation, or at <br /> rates that would cause the excess nitrogen or metals to leach to groundwater, is prohibited. <br />