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WASTE DISCHARGE REQUIREMENTS _3- <br /> GOLD BOND BUILDING PRODUCTS, INC. <br /> NATIONAL GYPSUM COMPANY <br /> SAN JOAQUIN COUNTY <br /> 2. Bypass or overflow of untreated or partially treated wastes is <br /> prohibited. <br /> B. Effluent Limitations; prior to discharge to McDougald Slough: <br /> 1. The discharge shall only consist of cooling water. <br /> 2. The chlorine residual shall not exceed 0.1 mg/l . <br /> 3. The chemical oxygen demand shall not exceed 20 mg/l . <br /> 4. The discharge shall not have a pH less than 6.5 nor greater than 8.5. <br /> 5. The discharge shall not have a settleable matter concentration <br /> exceeding 0.1 ml/1 . <br /> 6. The maximum daily discharge shall not exceed 3.5 million gallons. <br /> 7. The Discharger shall use the best practical cost effective control <br /> technique currently available to limit mineralization to no more than <br /> a reasonable increment. <br /> 8. The discharge shall not cause visible oil , grease, floating or <br /> suspended material in McDougald Slough. <br /> C. Effluent Limitations to Mormon Slough: <br /> 1. Temperature of the discharge shall not exceed 96°F (35°C) at any time. <br /> 2. The maximum temperature of the discharge shall not exceed the <br /> background receiving water by more than 20°F (70C) . <br /> D. Receiving Water Limitations, Mormon Slough: <br /> 1. The discharge shall not cause a detectable chlorine residual in Mormon <br /> Slough (detection limit 0.02 mg/1 ) . <br /> 2. The discharge shall not cause visible oil , grease, scum, foam, <br /> floating or suspended material in the receiving waters or water- <br /> courses. <br />