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CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARD <br /> CENTRAL VALLEY REGION <br /> REVISED MONITORING AND REPORTING PROGRAM NO. 94-263 <br /> FOR <br /> CITY OF RIPON <br /> WASTEWATER TREATMENT PLANT <br /> SAN JOAQUIN COUNTY <br /> This Revised Monitoring and Reporting Program(MRP) describes requirements for monitoring dom sti <br /> wastewater, industrial wastewater, treated domestic wastewater effluent, wastewater treatment/storag <br /> percolation ponds, and groundwater. This MRP is issued pursuant u Water Code Section ent/st The <br /> Discharger shall not implement any changes to this MRP unless and until a revised MRP is issued by the <br /> Executive Officer. Regional Board staff shall approve specific sample station locations prior to <br /> implementation of sampling activities. <br /> All samples should be representative of the volume and nature of the discharge or matrix of material D <br /> sampled. The time, date, and location of each sample shall be recorded on the sample chain of custo y <br /> form. The Discharger may elect to collect composite samples. All sample collection and preservati <br /> must be performed in accordance with the analytical method guidelines. <br /> DOMESTIC WASTEWATER INFLUENT MONITORING <br /> Domestic wastewater influent monitoring shall include the following: <br /> Constituent Sampling Reporting <br /> Units _Type of Sample Frequencv Frequencv <br /> Daily Flow gpd Meter Continuously Monthly <br /> Monthly Average Flow gpd/mo Calculated Monthl <br /> BOD Y Monthly <br /> Total Dissolved Solids mg/L Grab Monthly Monthly <br /> Standard Minerals mg/L Grab Monthly Monthly <br /> mg/L Grab Annually Annually <br /> BOD denotes 5-day Biochemical Oxygen Demand. <br /> Standard Minerals shall include, at a minimum,the following elements/compounds: Barium,Calcium,Magnesium, <br /> Potassium, Sulfate, Total Alkalinity(including alkalinity series), and Hardness. <br /> INDUSTRIAL WASTEWATER INFLUENT MONITORING <br /> Industrial wastewater influent monitoring shall include the following: <br /> Constituent Sampling Reporting <br /> Units Type of Sample Frequencv Frequencv <br /> Daily Flow gpd Meter Continuously Monthly <br /> Monthly Average Flow gpd/mo Calculated Continuously Monthly <br /> BOD mg/L Grab Weekly <br /> Nitrate as Nitrogen mg/L Monthly <br /> g/ <br /> Total Kjeldahl Nitrogen mGrab Weekly Monthly <br /> Total Dissolved Solids �' Grab Weekly Monthly <br /> Sodium mg/ Grab Weekly Monthly <br /> Chloride mg/ Grab Weekly Monthly <br /> Dissolved Inorganic Solids mg/L Grab Weekly Monthly <br /> � Grab Weekly Monthly <br />