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MONITORING AND REPORTING PROGRAM NO. 97-229 - 8 - <br /> J.R. <br /> 8 -J.R. SIMPLOT LATHROP FACILITY <br /> SAN JOAQUIN COUNTY <br /> TABLE 5. SURFACE IMPOUNDMENT MONITORING REQUIREMENTS <br /> Field Parameters Units Sampling <br /> Frequency <br /> Flow Rate Gallons per month Monthly <br /> Minimum Freeboard' ± 0.1 feet Weekly <br /> Quantity Discharged' gallons/day Daily <br /> Remaining Capacity' percent Quarterly <br /> Temperature °C Quarterly <br /> pH S.U. Quarterly <br /> Specific Conductivity mhos/cm Quarter) <br /> impoundment freeboard shall be measured weekly and reported quarterly <br /> ' 30-day average and daily maximum flows shall be reported quarterly <br /> 3 capacity determination shall incorporate the estimated volume <br /> STORM WATER SURFACE IMPOUNDMENT MONITORING <br /> 13. The Storm Water Surface Impoundment shall be sampled and analyzed quarterly for the <br /> Constituents of Concern in Table 1, field measurements as specified in Table 6, and within <br /> 24 hours of the first two storms of the wet season that produce significant flows. Storm <br /> Water Surface Impoundment monitoring reports shall be submitted semiannually with th <br /> corresponding groundwater monitoring and surface impoundment reports. <br /> TABLE 6. STORM WATER SURFACE IMPOUNDMENT MONITORING REQUIREMENTS <br /> Sampling <br /> Field Parameters Units Frequency <br /> Minimum freeboard 0.1 feet Quarterly <br /> Flow estimate cubic ft/sec Monthly <br /> pH S.0 Monthly <br /> Specific Conductivity mhos/cm Month) <br /> UNSATURATED ZONE MONITORING <br /> 14. The Discharger shall operate and maintain an unsaturated zone detection monitoring <br /> system that complies with the applicable provisions of Title 27 §20415 in accordance wi <br /> monitoring plan approved by the Executive Officer. Unsaturated zone samples shall be <br /> collected from the monitoring devices of the approved unsaturated zone monitoring <br /> system. The collected samples shall be analyzed quarterly for the Constituents of Concern <br /> in Table 1 and in accordance with the methods and frequency specified in Table 7. The <br /> Discharger shall collect, preserve, and transport samples in accordance with the quality <br /> assurance/quality control standards contained in the approved Sample Collection and <br /> Analysis Plan. All monitoring parameters shall be graphed so as to show historical trends <br /> at each monitoring point. <br />