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I.., ..s <br /> WASTE DISCHARGE REQUIREMENTS -5- <br /> CITY OF STOCKTON <br /> MAIN WATER QUALITY CONTROL PLANT <br /> SAN JOAQUIN COUNTY <br /> 9. The maximum temperature of the discharge shall not exceed the natural <br /> receiving water temperature by more than 20°F (11°C) . <br /> 10. The Discharger shall not cause degradation of any water supply. <br /> 11. Discharge to the San Joaquin River or any of its tributaries is <br /> prohibited when Stockton ' s discharge exceeds 5% of the river flow, <br /> and/or when the net flow is reversed (flow is toward Vernalis) . <br /> B. Receiving Water Limitations: <br /> 1. The discharge shall not cause the dissolved oxygen concentration in <br /> the San Joaquin River to fall below the following levels: <br /> Units Maximum Median 95 Percentile <br /> mg/l 5.0 -- -- <br /> Percent of -- 85 75 <br /> Saturation <br /> * When circumstances cause dissolved oxygen levels less than 5.0 mg/l <br /> downstream or upstream of the discharge, then the City of Stockton <br /> facility shall be operated to comply as stipulated in A.2. <br /> 2. The discharge shall not cause visible oil , grease, scum, or foam in <br /> the receiving waters or watercourses. <br /> 3. The discharge shall not cause concentrations of any materials in the <br /> receiving waters which are deleterious to human, animal , aquatic, or <br /> plant life. <br /> 4. The discharge shall not cause esthetically undesirable discoloration <br /> of the receiving waters. <br /> 5. The discharge shall not cause fungus, slimes or other objectionable <br /> growths in the receiving waters. <br /> 6. The discharge shall not cause bottom deposits in the receiving waters. <br /> 7. The discharge shall not cause floating or suspended materials of the <br /> recognizable sewage origin in the receiving waters. <br /> 8. The discharge shall not increase the turbidity of the receiving waters <br /> more than 10% over background levels. <br />