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REVISED MONITORING AND REPORTING PROGRAM NO. 94-263 4 <br /> CITY OF RIPON WASTEWATER TREATMENT PLANT <br /> RIPON,SAN JOAQUIN COUNTY <br /> REPORTING <br /> In reporting monitoring data, the Discharger shall arrange the data in tabular form so that the date, sample <br /> type (e.g., effluent,pond, etc.), and reported analytical result for each sample are readily discernible. The <br /> data shall be summarized in such a manner to clearly illustrate compliance with waste discharge <br /> requirements and spatial or temporal trends, as applicable. The results of any monitoring done more <br /> frequently than required at the locations specified in the Monitoring and Reporting Program shall be <br /> reported to the Regional Board. <br /> As required by the California Business and Professions Code Sections 6735, 7835, and 7835.1, all <br /> Groundwater Monitoring Reports shall be prepared under the direct supervision of a Registered Engineer <br /> or Geologist and signed by the registered professional. <br /> A. Monthly Monitoring Reports <br /> Daily, weekly, and monthly monitoring data shall be reported in monthly monitoring reports. Monthly <br /> reports shall be submitted to the Regional Board on the I"day of the second month following sampling <br /> (i.e. the January Report is due by 1 March). At a minimum, the reports shall include: <br /> 1. Results of domestic and industrial wastewater influent monitoring, treated domestic wastewater <br /> effluent monitoring, treatment/storage/percolation pond monitoring, and industrial wastewater land <br /> application area monitoring; <br /> 2. A comparison of monitoring data to the discharge specifications and an explanation of any violation <br /> of those requirements. Data shall be presented in tabular format; and <br /> 3. If requested by staff, copies of laboratory analytical report(s). <br /> B. Quarterly Monitoring Reports <br /> The Discharger shall establish a quarterly sampling schedule for groundwater monitoring such that <br /> samples are obtained approximately every three months. Quarterly monitoring reports shall be submitted <br /> to the Board by the 1" day of the second month after the quarter (i.e. the January-March quarterly <br /> report is due by May V) and may be combined with the monthly report. The Quarterly Report shall <br /> include the following: <br /> 1. Results of groundwater monitoring; <br /> 2. A narrative description of all preparatory,monitoring, sampling, and analytical testing activities for <br /> the groundwater monitoring. The narrative shall be sufficiently detailed to verify compliance with <br /> the WDR, this MRP, and the Standard Provisions and Reporting Requirements. The narrative shall <br /> be supported by field logs for each well documenting depth to groundwater; parameters measured <br /> before, during, and after purging; method of purging; calculation of casing volume; and total <br /> volume of water purged; <br /> 3. Calculation of groundwater elevations, an assessment of groundwater flow direction and gradient on <br /> the date of measurement, comparison of previous flow direction and gradient data, and discussion of <br /> seasonal trends if any; <br /> V:\S J0UVM Nal iAt1 b6n IWU Jw Uhlp WV/iMCVj.N MRP 90.36J.0.'< <br />