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WASTE DISCHARGE REQUIREMENTS ORDER NO. 5-00- • -11- <br /> CITY OF LODI <br /> WHITE SLOUGH WATER POLLUTION CONTROL PLANT <br /> SAN JOAQUIN COUNTY <br /> Lead, total µg/l 3.6 <br /> lbs/day 0.213 <br /> Organochlorine <br /> Pesticides µg/1 ND <br /> 6 <br /> Chlorine Residual? mg/1 0.01 0.0197 <br /> ' 5-day,20°C biochemical oxygen demand(BOD) <br /> Z To be ascertained by a flow proportional 24-hour composite sample. <br /> 3 Based on an average dry weather flow capacity of 7.0 mgd. <br /> 4 Discharge must meet or exceed 5 mg/1 dissolved oxygen. <br /> 5 Based on a conversion factor of 0.986 from dissolved to total recoverable zinc. <br /> 6 ND(non-detectable),The non-detectable limitation applies to each individual pesticide at any detection <br /> level. No individual pesticide may be present in the discharge at detectable concentrations. The <br /> Discharger shall use EPA standard analytical techniques that have the lowest practical level for <br /> organochlorine pesticides with a maximum acceptable detection level 0.02 µg/1. <br /> 7 Note that the 0.019 mg/l limitation is as an hourly average not daily average. <br /> 2. Interim total coliform organism wastewater effluent limits shall be in effect through <br /> 30 April 2004. The effluent limit shall allow a monthly median concentration of <br /> 23 MPN/100 ml and a daily maximum of 500 MPN/ 100 ml. <br /> 3. Effective 1 May 2004, a new discharge effluent limitation for total coliform organisms <br /> and turbidity shall be applied. <br /> Monthly 7-Day Daily <br /> Constituents Units Average Median Maximum <br /> Total Coliform MPN/100 ml 2.2 23 <br /> Organisms <br /> Turbidity' NTU 2 5 <br /> ' Turbidity shall not exceed 10 NTU at any given time(monitored continuously). <br /> 4. The arithmetic mean of 20°C BOD (5-day) and total suspended solids in effluent <br /> samples collected over a monthly period shall not exceed 15 percent of the arithmetic <br /> mean of the values for influent samples collected at approximately the same times during <br /> the same period(85 percent removal). <br /> 5. The maximum effluent temperature shall not exceed the natural receiving water <br /> temperature by more than 20°F. <br /> 6. The discharge shall not have a pH less than 6.5 nor greater than 8.5. <br /> 7. The 30-day average dry weather effluent flow shall not exceed 7.0 mgd. If the <br /> Discharger is able to submit adequate evidence that increasing the effluent discharge <br /> flow rate to the receiving water will not cause violations of the dissolved oxygen water <br />