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MONITORING AND REPORTING PROGRAM NO.R5-2004-0028 3 MONITORING AND REPORTING PROGRAM NO.R5-2004-0028 4 <br /> NPDES NO.CA0081558 NPDES NO.CA0081558 <br /> CITY OF MANTECA,CITY OF LATHROP AND DUTRA FARMS CITY OF MANTECA,CITY OF LATHROP AND DUTRA FARMS <br /> WASTEWATER QUALITY CONTROL FACILITY WASTEWATER QUALITY CONTROL FACILITY <br /> SAN JOAQUIN COUNTY SAN JOAQUIN COUNTY <br /> Sampling considered adequately composited. The date and time of collection of a grab sample shall be recorded. <br /> Constituents Units Tyne of Sample Frequency The following shall constitute the effluent monitoring program: <br /> Carbofuran ug/1 Grab Quarterly Sampling <br /> Standard Minerals'l mg/I Grab Annually Constituent Units Type of Sample Frequency <br /> Priority Pollutants8,12 mg/1 Grab Annually Flow MGD Continuous Daily <br /> 1 Effluent temperature monitoring will be at the outfall location. 20°C BODS mg/1 Grab Twice Monthly <br /> 2 Chlorine residual must be monitored with a method sensitive to and accurate at the permitted <br /> level of 0.01 mg/1. Settleable Matter ml/1 Grab Twice Monthly <br /> 3 Concurrent with biotoxicity monitoring. <br /> ° Report as total. Total Dissolved Solids mg/1 Grab Quarterly <br /> 5 The acute bioassays samples shall be analyzed using EPA-821-R-02-012,Fifth Edition,or later <br /> amendment with Regional Board staff approval. Temperature and pH shall be recorded at the Electrical Conductivity @25°C umhos/cm Grab Twice Monthly <br /> time of bioassay sample collection. Test species shall be fathead minnows(Pimephales <br /> promelas),with no pH adjustment unless approved by the Executive Officer. Ammonia(as N) mg/I Grab Twice Monthly <br /> 6 Concurrent with Ammonia Sampling. <br /> 7 The bioassay may be modified to eliminate ammonia-related toxicity until 31 March 2004,at Nitrate(as N) mg/1 Grab Twice Monthly <br /> which time the Discharger shall be required to implement the test without modifications to <br /> eliminate ammonia toxicity. Total Metals' mg/I Grab Annually2 <br /> 8 Detection limits will be equal to or less than the lowest minimum level published in Appendix 4 <br /> of the Policy for Implementation of Toxics Standards for Inland Surface Waters,Enclosed Bays, 'Total Metals shall include analyses for Cadmium,Chromium,Copper,Lead,Nickel,and Zinc. <br /> and Estuaries of California(known as the State Implementation Plan or SIP). 2Samples shall be collected during the month of August. <br /> 9 Utilize Method 1631 with a detection limit of 0.0005 ug/1. <br /> 10 Trihalomethanes include bromoform,chloroform,bromodichloromethane,and If the discharge is intermittent rather than continuous,then on the first day of each such intermittent <br /> dibromochloromethane. discharge,the Discharger shall monitor and record data for all of the constituents listed above,with the <br /> '1 Standard minerals shall include all major cations and anions and include a verification that the exception of metals analyses,after which the frequencies of analysis given in the schedule shall apply <br /> analysis is complete(i.e.,cation/anion balance). for the duration of each such intermittent discharge. In no event shall the Discharger be required to <br /> 12 Concurrent with receiving water sampling. monitor and record data more often than twice the frequencies listed in the schedule. <br /> If the discharge is intermittent rather than continuous,then on the first day of each such intermittent <br /> discharge,the Discharger shall monitor and record data for all of the constituents listed above,after STORAGE POND MONITORING <br /> which the frequencies of analysis given in the schedule shall apply for the duration of each such <br /> intermittent discharge. In no event shall the Discharger be required to monitor and record data more <br /> often than twice the frequencies listed in the schedule. Constituent Units Type of Sample Sampling Frequency <br /> EFFLUENT MONITORING OF RECLAMATION WATER Dissolved Oxygen mg/l Grab Weekly <br /> pH pH units Grab Weekly <br /> Effluent samples shall be collected downstream from the last connection through which reclaimed water <br /> can be admitted into the field distribution system. Effluent samples should be representative of the <br /> volume and nature of the discharge. Samples collected from the outlet structure of ponds will be <br />