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} <br /> FACT SHEET ORDER NO. 50 031 <br /> ATTACHMENT C <br /> CITY OF LODI <br /> WHITE SLOUGH WATER POLLUTION CONTROL PLANT <br /> SAN JOAQUIN COUNTY <br /> uses of the receiving waters. This Order provides interim limits for total coliform, which the <br /> Discharger is currently capable of meeting. Full compliance with the turbidity limitation and the <br /> 2.2 MPN/100 ml total coliform limitation is not required by this Order until 1 May 2004. Adequate <br /> time is provided for the Discharger to propose alternatives that are still protective of public health <br /> and irrigation uses but at a reduced cost. The permit may be reopened at such time as the <br /> Discharger proposes an alternative that is protective of public health and irrigation use. <br /> e) Ammonia <br /> Due to.concerns discussed above over impacts of expanding the discharge on dissolved oxygen, the <br /> treatment plant flows have been held to a maximum of 7.0 mgd, whereas it was designed to treat up <br /> to 8.5 mgd of secondary-treated effluent. Actual flows have not exceeded 6 mgd. While operating <br /> at less than the design capacity, the plant has been effective at removing ammonia by nitrification. <br /> At this time there are no effluent limitations for ammonia. If flows increase such that the plant is no <br /> longer capable of removing ammonia, then ammonia may be discharged at a concentration that may <br /> cause or have the reasonable potential to cause, or contribute to toxicity in the receiving water. If <br /> monitoring shows there is a reasonable potential for ammonia concentrations to increase. then this <br /> Order may be reopened to include effluent limitations for ammonia. <br /> f) Temperature <br /> Tlf SWRCB Water Quality Control Plan for Control of Temperatures in Coastal and Interstate <br /> Waters and Enclosed Bays and Estuaries of California (Thermal Plan) is applicable to this <br /> discharge. For purposes of the Thermal Plan, the discharge is considered to be an existing <br /> discharge of elevated temperature waste to an estuary. The Thermal Plan requires that such a <br /> discharge: <br /> A. Shall not exceed the receiving water temperature by more than 20°F; <br /> B. Shall not create a zone, defined by water temperatures of more than 1°F above natural <br /> receiving water temperature which exceeds 25 percent of the cross sectional area of a <br /> main river channel at any point; and <br /> C. Shall not cause a temperature rise greater than 4°F above the natural temperature of the <br /> receiving waters at any time or place. <br /> This permit includes the temperature limits as well as a Provision for the Discharger to evaluate its <br /> ability to comply. Full compliance with the temperature limits A. and C., above, in Dredger Cut, <br /> are not required by this Order until 1 May 2004. <br />