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WASTE DISCHARGE REQUIREMENTS -9- <br /> CITY OF STOCKTON <br /> REGIONAL WATER QUALITY CONTROL PLANT <br /> SAN JOAQUIN COUNTY <br /> B. Effluent Limitations: <br /> 1. Effluent shall not exceed the following limits: <br /> Monthly Weekly Daily Daily <br /> Constituents Unills Averaee Averaee Aventae Maximum <br /> Total Suspended Solids mg/l 30' 45' 60' <br /> Settleable Solids ml/1 -- -- -- 0.1 <br /> Chlorine Residual mg/I 0.011 0.018 -- <br /> Total Coliform Organisms MPN/100 ml 23 (median) -- -- 500 <br /> Oil and Grease mg/I 10 15 <br /> ' To be ascertained by a 24-hour composite <br /> 2. During the period 1 December through 31 March, the effluent limitation for CBOD is as <br /> follows: <br /> Monthly Weekly Daily <br /> Constituents Units Average Average Maximum <br /> CBOD5' mg/1 202 302 50 2 <br /> ' 5-day, 20°C Carbonaceous Biochemical Oxygen Demand <br /> 2 To be ascertained by a 24-hour composite <br /> 3. During the period I April through 31 October, effluent limitations for CBOD and Ammonia <br /> are as follows: <br /> Monthly Weekly Daily <br /> Constituents Units Averaee Averaee Maximum <br /> CBOD5' mg/1 102 202 252 <br /> Ammonia mg/1 22 42 52 <br /> ' 5-day, 20°C Carbonaceous Biochemical Oxygen Demand <br /> 2 To be ascertained by a 24-hour composite <br /> 4. During the period 1 November through 30 November, effluent limitations for CBOD and <br /> Ammonia are as follows: <br />