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CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARD <br /> CENTRAL VALLEY REGION <br /> MONITORING AND REPORTING PROGRAM NO. 94-324 <br /> NPDES NO. CA0079138 <br /> FOR <br /> CITY OF STOCKTON <br /> REGIONAL WATER QUALITY CONTROL PLANT <br /> SAN JOAQUIN COUNTY <br /> INFLUENT MONITORING <br /> Influent samples shall be collected at approximately the same time as effluent samples. Influent <br /> samples should be representative of the influent. Influent monitoring shall include at least the <br /> following: <br /> Sampling <br /> Constituent Units Type of Sample Freguency <br /> 20°C BODS mg/I 24-hr. Composite Daily <br /> Suspended Solids mg/1 24-hr. Composite Daily <br /> Flow mgd Continuous Daily <br /> Electrical µmhos/cm Grab Weekly <br /> Conductivity @ 25°C <br /> EFFLUENT MONITORING <br /> Effluent samples shall be collected downstream from the last connection through which wastes can <br /> be admitted into the outfall. Effluent samples should be representative of the volume and quality of <br /> the discharge. Time of collection of samples shall be recorded. Effluent monitoring shall include at <br /> least the following: <br /> Sampling <br /> Constituents Units Type of Sammi Frequency <br /> 20°C BODS mg/1 24-hr. Composite Daily <br /> Suspended Solids mg/I 24-hr. Composite Daily <br /> Settleable Solids ml/1 24-hr. Composite Daily <br /> Total Coliform Organisms MPN/100 ml Grab Daily <br /> Temperature OF Grab Daily <br /> pH' Number Meter Continuous <br /> Chlorine Residual' mg/l Meter Continuous <br />