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WASTE DISCHARGE REQUIREMENTS -29- CITY OF STOCKTON REGIONAL WASTEWATER CONTROL FACILITY SAN JOAQUIN COUNTY LATE REVISIONS 5. In accordance with MRP No. R5-2002- the Discharger shall submit a sludge disposal plan describing the annual volume of sludge generated by the plant and 3, m; specifying the disposal practices. E. Receiving Water Limitations: Receiving Water Limitations are site-specific interpretations of water quality objectives contained in the Basin Plan. As such they are a required part of this Order. However, a receiving water condition not in conformance with the limitation is not necessarily a violation of this Order. The Regional Board may require an investigation to determine cause and culpability prior to asserting a violation has occurred. The discharge shall not cause the following in the receiving water: 1. Oils, greases, waxes, or other materials to form a visible film or coating on the water surface or on the stream bottom. 2. Oils, greases, waxes, floating material (liquids, solids, foams, and scums) or suspended material to create a nuisance or adversely affect beneficial uses. 3. Aesthetically undesirable discoloration. 4. Fungi, slimes, or other objectionable growths. 5. The creation of a zone, defined by water temperatures of more than 1°F above natural receiving water temperature, which exceeds 25 percent of the cross- sectional area of the river channel at any point. 6. A surface water temperature rise greater than 4°F above the natural temperature of the receiving water at any time or place. 7. The 30-day average for turbidity to increase as follows: a. More than 1 Nephelometric Turbidity Units (NTUs) where natural turbidity is between 0 and 5 NTUs. b. More than 20 percent where natural turbidity is between 5 and 50 NTUs. C. More than 10 NTUs where natural turbidity is between 50 and 100 NTUs. d. More than 10 percent where natural turbidity is greater than 100 NTUs. 8. The 30 d:yr a*efage-ambient pH to fall below 6.57-or exceed 8.5, or the 30-dav average ambient pH change by more than 0.5 units. 9. The 30-day average ambient temperature to increase more than 5°F.