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CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARD <br /> CENTRAL VALLEY REGION <br /> MONITORING AND REPORTING PROGRAM NO. <br /> NPDES NO. CA0081965 <br /> FOR <br /> STOCKTON COGENERATION COMPANY <br /> SAN JOAQUIN COUNTY <br /> This Monitoring and Reporting Program is issued pursuant to Water Code Section 13267. The <br /> Discharger shall not implement any changes to this Program unless and until the Regional Board issues a <br /> revised Monitoring and Reporting Program. <br /> EFFLUENT MONITORING <br /> Effluent samples shall be collected downstream from the last connection through which wastes can be <br /> admitted into the outfall. Effluent samples should be representative of the volume and quality of the <br /> discharge, including batch releases from various processes throughout the facility. Time of collection of <br /> samples shall be recorded. Effluent monitoring shall include at least the following: <br /> Constituents Units Type of Sample Sampling Frequency <br /> COD mg/1 24-hr. Composite Weekly <br /> Suspended Solids mg/1 24-hr. Composite Weekly <br /> Settleable Solids mg/I 24-hr. Composite Weekly <br /> Total Dissolved Solids mg/1 24-hr. Composite Weekly <br /> Electrical Conductivity @25°C µmhos/cm Grab Weekly <br /> PH Number Grab Weekly <br /> Chlorine Residual mg/1 Grab Weekly <br /> Flow mgd Meter Continuous <br /> Temperature OF In situ Weekly <br /> Oil and Grease mg/1 Grab Monthly <br /> EPA Priority Pollutants' µg/1 Grab Yearly <br /> EPA Priority Pollutant Metals'°3 µg/1 24-hr. Composite Quarterly <br /> Hardness (as CaCO3) mg/1 Grab Quartley4 <br /> Footnotes on next page. <br />