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�.r %moo <br /> CITY OF STOCKTON MAIN WATER QUALITY CONTROL PLANT <br /> San Joaquin County <br /> 9. This Order expires on 1 September 1979 and the City of Stockton Main Water <br /> Quality Control Plant must file a Report of Waste Discharge in accordance <br /> with Title 23, California Administrative Code, not later than 180 days in <br /> advance of such date as application for issuance of new waste discharge <br /> requirements. <br /> 10. In the event of any change in control or ownership of land or waste discharge <br /> facilities presently owned or controlled by the discharger, the discharger shall <br /> notify the succeeding owner or operator of the existence of this Order by letter, <br /> a copy of which shall be forwarded to this office. <br /> 11. The daily discharge rate is obtained from the following calculation for <br /> any calendar day: <br /> N <br /> Daily discharge rate = 8_34 Qi Ci <br /> N <br /> 1 <br /> in which N is the number of samples analyzed in any calendar day. Qi and Ci <br /> are the flow rate (MGD) and the constituent concentration (mg/1) respectively, <br /> which are associated with each of the N grab samples which may be taken in <br /> any calendar day. If a composite sample is taken Ci is the concentration <br /> measured in the composite sample, and Qi is the average flow rate occurring <br /> during the period over which samples are composited. <br /> The 7-day and 30-day average discharge rates shall be the arithmetic <br /> average of all the values of daily discharge rate calculated using the re- <br /> sults of analyses of all samples collected during any 7 and 30 consecutive <br /> calendar day period respectively. If fewer than four samples are collected <br /> and analyzed during any 30 consecutive calendar day period, compliance with <br /> the 30-day average discharge rate limitation shall not be determined. If <br /> fewer than three samples are collected and analyzed during any 7 consecutive <br /> calendar day period compliance with the 7-day average rate limitation <br /> shall not be determined. <br /> The daily maximum concentration shall be determined from the analytical <br /> results of any sample, whether discrete or composite. <br /> I, JAMES A. ROBERTSON, Executive Officer, do hereby certify the foregoing is a full, <br /> true, and correct copy of an order adopted by the California Regional Water Quality <br /> Control Board, Central Valley Region, on 9/27/74 <br /> Original signed by <br /> James A. Robertson <br /> JAMES A. ROBERTSON, Executive Officer <br /> Revised 9/4/74 scm/ca - 7 - <br />