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MONITORING AND REPORTING PROGRAM <br /> SEBASTIANI VINEYARDS, INC. <br /> SAN JOAQUIN COUNTY <br /> GROUNDWATER MONITORING <br /> Each groundwater monitoring well shall be monitored for the following: <br /> Constituents Units Type of Sample Frequency <br /> Nitrates as N mg/1 Grab Quarterly <br /> Total Dissolved Solids mg/l Grab Quarterly <br /> Standard Minerals' mg/1 Grab Semi-Annual' <br /> Specific Conductivity umhos/cm Grab Quarterly <br /> pH pH Units Grab Quarterly <br /> 1 The Discharger may propose a reduction in frequency to semiannual after two years of quarterly data. <br /> 2 Standard Minerals shall include the following compounds: Calcium,Magnesium, Sodium,Chloride,Nitrate, <br /> Sulfate,Total Dissolved Solids,Total Alkalinity(including alkalinity series),and Hardness. <br /> 3 Analyses shall be performed semiannually during the first two years,collected at the height of the wet and dry <br /> seasons.These analyses may be reduced to annual,collected during the height of the dry season,provided there are <br /> no seasonal variations in concentrations in the semiannual analytical results. <br /> REPORTING <br /> In reporting the monitoring data, the Discharger shall arrange the data in tabular form so that the <br /> date,the constituents, and the concentrations are readily discernible. The data shall be summarized <br /> in such a manner to illustrate clearly the compliance with waste discharge requirements. Applicable <br /> water quality criteria for each compound shall also be displayed in the tables for comparison to the <br /> analytical results. Groundwater monitoring reports shall depict the direction and magnitude of <br /> groundwater flow. <br /> The results of any monitoring done more frequently than required at the locations specified in the <br /> Monitoring and Reporting Program shall be reported to the Board. <br /> Monthly and quarterly monitoring reports shall be submitted to the Regional Board by the 30th day <br /> of the following month. <br />