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WASTE DISCHARGE REQUIREMENTS -3- <br /> CITY OF STOCKTON <br /> MAIN WATER QUALITY CONTROL PLANT <br /> SAN JOAQUIN COUNTY <br /> Water Act and regulations and guidelines adopted thereunder, shall comply with <br /> the following: <br /> A. Effluent Limitations: <br /> 1. The discharge of effluent in excess of the following limits is <br /> prohibited: <br /> Monthly Weekly 30-Day Daily <br /> Constituents Units Average Average Median Maximum <br /> BOD, mg/l 30 45 -- 50 <br /> lbs/day2 14,510 21,770 -- 24,180 <br /> Total Suspended mg/l 30 45 -- 50 <br /> Matter lbs/day2 14,510 21,770 -- 24,180 <br /> Settleable Matter ml/1 -- -- -- 0.1 <br /> Chlorine Residual mg/l 0.02 -- -- 0.05 <br /> Total Coliform3 MPN/100 ml -- -- 23 500 <br /> Organisms <br /> Grease and 011 mg/1 10 -- -- 15 <br /> lbs/day2 4,840 -- -- 7,260 <br /> Total Phenols ug/l -- -- -- 1.0 <br /> Flow MGD 58 61 -- 67 <br /> 1) 5-day, 20°C Biochemical Oxygen Demand <br /> 2) Mass loadings are based as an average monthly design flow of 58 <br /> mgd <br /> 3) Limits can be met at any point in the treatment system <br /> 2. During the period 1 August through 31 October or when dissolved oxygen <br /> levels are less than 5.0 mg/l in the San Joaquin River downstream or <br /> upstream of the discharge, the BOD and Total Suspended Matter effluent <br /> limitatic,ns are as follows: <br /> Monthly Weekly Daily <br /> Constituents Units Average Average Maximum <br /> BOD mg/l 10 20 30 <br /> lbs/day 4,840 9,680 14,520 <br />