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D R A F T January 4, 2012 <br /> EC levels that exceed Basin Plan objectives. On remand, the Central Valley Water Board may <br /> consider these issues further; <br /> 5. Evidence in the record is insufficient to determine whether the field <br /> application of the biosolids wastewater mixture complies with the Basin Plan; <br /> 6. Evidence in the record is insufficient to determine whether the discharge of <br /> untreated industrial wastewater to the storage ponds or to the agricultural fields complies with <br /> the Basin Plan; <br /> 7. The wastewater mixture applied to land has not been adequately <br /> characterized and there is insufficient evidence in the record to assess the water quality <br /> impacts of discharging this waste stream to the ponds or to the agricultural fields; <br /> 8. Order No. R5-2007-0113 must be revised to reflect that the City's land <br /> disposal practices do not currently meet the preconditions for an exemption from Title 27; <br /> 9. Order No. R5-2007-0113 does not violate the federal regulations in part 503 <br /> of title 40 of the Code of Federal Regulations governing the use of biosolids as a soil <br /> amendment; <br /> 10. Order No. R5-2007-0113 must be revised to require that the wintertime <br /> irrigation management plan include practices that only "prevent," rather than "minimize," the <br /> discharge of biosolids to surface waters; <br /> 11. Order No. R5-2007-0113 must be revised to include an appropriate narrative <br /> effluent limitation for chronic toxicity. <br /> 23. <br />