Laserfiche WebLink
WASTE DISCHARGE REQUIREMENTS 6 <br /> CITY OF MANTECA AND CITY OF LATHROP <br /> WASTEWATER QUALITY CONTROL FACILITY <br /> SAN JOAQUIN COUNTY <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 <br /> exceed crop utilization rates, or rates which cause specific constituents to exceed single, <br /> annual, or 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 <br /> Landspreading 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 /> 6. To protect ground water (to prevent metals from leaching to groundwater), the application <br /> of sludge shall not cause the sludge/soil mixture to exceed the following soluble levels <br /> (mg/1)when extracted with distilled water using the Waste Extraction Test (WET) <br /> described in the California Code of Regulations (CCR), Title 22, Division 4, Chapter 30: <br /> Concentrations in Sludge/Soil Mixture Not to be Exceeded <br /> Metal Limitation (me/1) <br /> Cadmium 0.1 <br /> Copper 20.0 <br /> Lead 0.5 <br /> Nickel 0.134 <br /> Zinc 200.0 <br />