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CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARD <br /> CENTRAL VALLEY REGION <br /> MONITORING AND REPORTING PROGRAM NO. 90-312 <br /> FOR <br /> LOCKEFORD COMMUNITY SERVICES DISTRICT <br /> WASTEWATER TREATMENT AND DISPOSAL <br /> SAN JOAQUIN COUNTY <br /> INFLUENT MONITORING <br /> Samples shall be collected at the same frequency and at approximately the same <br /> time as effluent samples and should be representative of the influent for the <br /> period sampled. <br /> The following shall constitute the influent monitoring program: <br /> Constituents Units Type of Sample Frequency <br /> BOD mg/l 24-hour Composite Weekly <br /> Flow mgd Continuous Daily <br /> EFFLUENT MONITORING <br /> Samples shall be collected at the outlet of the last pond before going to <br /> irrigation. Grab samples will be considered adequately composited. <br /> Constituents Units Type of Sample Frequency <br /> BOD mg/l Grab Weekly <br /> Settleable Solids mg/l Grab Weekly' <br /> Fixed TDS mg/l Grab Quarterly <br /> Nitrates mg/l Grab Quarterly <br /> Standard Minerals mg/l Grab Semiannually <br /> During irrigation <br /> AERATION AND STORAGE POND MONITORING <br /> Constituents Units Type of Sample Frequency Location <br /> Dissolved Oxygen mg/l Grab Weekly Each Pond <br /> Pond Freeboard feet -- Weekly Each Pond <br />