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CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARD <br /> CENTRAL VALLEY REGION <br /> MONITORING AND REPORTING PROGRAM NO. <br /> NPDES NO. CA0003883 <br /> FOR <br /> GOLD BOND BUILDING PRODUCTS, INC. <br /> NATIONAL GYPSUM COMPANY <br /> SAN JOAQUIN COUNTY <br /> WATER WELL MONITORING <br /> A sampling station shall be established and located where representative samples <br /> of the influent can be obtained. The following shall constitute the influent <br /> monitoring program: <br /> Constituent Units Type of Sample Sampling Frequency <br /> Standard Minerals mg/l Grab Semi-annually <br /> Total Dissolved mg/l Grab Monthly <br /> Solids <br /> EFFLUENT MONITORING <br /> McDougald Slough <br /> A sampling station shall be established for the discharge to McDougald Slouqh <br /> and shall be located where representative samples of that effluent can be <br /> obtained. The following shall constitute the effluent monitoring program: <br /> Constituent Units Type of Sample Sampling <br /> Frequency <br /> Flow mgd Continuous Continuous <br /> Electric Conductivity umhos/cm 24-Hour Weekly <br /> Total Dissolved Solids 'mg/1 24-Hour Monthly <br /> Settleable Matter ml/l Grab Weekly <br /> COD mg/l 24-Hour Weekly <br /> pH Number 24-Hour Weekly <br /> f <br /> Oil and Grease mg/1 24-Hour — Weekly <br /> Chlorine Residual mg/l Grab Weekly <br /> EPA 601 ug/l Grab Bi-monthly <br /> EPA 606 ug/l Grab Bi-monthly <br />