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CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARD <br /> CENTRAL. VALLEY REGION <br /> MONITORING AND REPORTING PROGRAM NO. 92- <br /> NPDES NO. CA0082911 <br /> FOR <br /> CITY OF STOCKTON <br /> AUSTIN ROAD LANDFILL <br /> GROUND WATER TREATMENT SYSTEM AND STORM WATER DISCHARGE <br /> SAN JOAQUIN COUNTY <br /> INFLUENT MONITORING <br /> Influent samples shall be collected after the last connection before the wastes <br /> enter the treatment process. Influent samples shall be representative of the <br /> volume and nature of the influent. Time of collection of a grab sample shall be <br /> recorded. The following shall constitute the influent monitoring program: <br /> Sampling <br /> Constituents Units Type of Sample Frequency <br /> Flow mgd -- Continuous <br /> pH pH units Grab Weekly <br /> Specific umhos/cm Grab Weekly n <br /> Conductivity <br /> 20°C BODS mg/1 , lbs/day Grab Monthly <br /> Suspended Solids mg/1 , lbs/day Grab Monthly <br /> EPA Method 601 µg/l Grab Semi-annually <br /> EPA Method 602 µg/l Grab Semi-annually <br /> ICRP (Metals Scan) mg/l Grab Annually <br /> EFFLUENT MONITORING <br /> Effluent samples shall be collected at the discharge from the final holding tank <br /> prior to being discharged into Littlejohns Creek. Effluent samples shall be <br /> representative of the volume and quality of the discharge. Time of collection <br /> of samples shall be recorded. Effluent monitoring shall include the following: <br /> Sampling <br /> Constituents Units Type of Samole Frequency <br /> Flow mgd -- Continuous <br /> pH pH units Grab Weekly <br /> Specific umhos/cm Grab Weekly <br /> Conductivity <br /> 20°C BODS mg/1 , lbs/day Grab Monthly <br /> Suspended Solids mg/1 , lbs/day Grab Monthly <br /> EPA Method 601 lig/l Grab Monthly' E <br />