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WASTE DISCHARGE REQUIREMENTS <br /> CITY OF TRACY <br /> WASTEWATER TREATMENT PLANT <br /> SAN JOAQUIN COUNTY -7- <br /> 12. Any proposed change in sludge use or disposal practice shall be <br /> reported to the Executive Officer and to EPA's Regional <br /> Administrator at least 14 days in advance of the change. <br /> 13. The discharger shall take all reasonable steps to minimize any <br /> adverse impact to waters of the state resulting from noncompliance <br /> with any sludge limitations specified in this Order, including <br /> such accelerated or additional monitoring as necessary to <br /> determine the nature and impact of the noncomplying discharge. <br /> E. Receiving Water Limitations: <br /> Receiving water limitations are site specific interpretations of water <br /> quality objectives from applicable water quality control plans. As such <br /> they are a required part of the permit. However, a receiving water <br /> condition not in conformance with a limitation is not necessarily a <br /> violation of this Order. The Board may require an investigation to <br /> determine cause and culpability prior to asserting a violation has <br /> occurred. <br /> 1 . The discharge shall not cause the dissolved oxygen concentration <br /> in Old River to fall below 5.0 mg/l . <br /> 2. The discharge shall not cause visible oil , grease, scum, foam, <br /> floating or suspended material in the receiving waters or <br /> watercourses. <br /> 3. The discharge shall not cause concentrations of any materials in <br /> the receiving waters which are deleterious to human, animal , <br /> aquatic, or plant life. <br /> 4. The discharge shall not cause esthetically undesirable <br /> discoloration of the receiving waters. <br /> 5. The discharge shall not cause fungus, slimes, or other <br /> objectionable growths in the receiving waters. <br /> 6. The discharge shall not cause bottom deposits in the receiving <br /> waters. <br /> 7. The discharge shall not increase the turbidity of the receiving <br /> waters by more than 10% over background levels. <br /> 8. The discharge shall not create a zone, defined by water <br /> temperatures of more than 1°F above natural receiving water <br /> temperature, which exceeds 25 percent of the cross-sectional area <br /> of the main river channel at any point. <br />