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PART I Page 8a Permit No. CO-0044776 •B. MOMTORING REQUIREMENTS i. Frequency and Sample Tyne (continued) d. Outfall 004 Effluent Parameter Measurement Frequency Samnle Tvce Flow, MGD Continuous Recorder 5-Day Biochemical Oxygen Demand, {BODS), mg/P Monthly Composite Total Suspended Solids, mg/Q Monthly Composite Fecal Coliform, No./100 mP Monthly Grab Total Residual Chlorine, mg/P Weekly Grab Oil and Grease, mg/Q Weekly Visual pH, s.u. (minimum-maximum) Weekly In-situ Influent Parameter Measurement Frequencv Samnle Tvce Flow, MGD Continuous Recorder 5-Day Biochemical Oxygen Demand, (BODs), mg/F (lb/day) Monthly Composite Total Suspended Solids, mg/P Monthly Composite Self-monitoring sampling by the pettnittee for compliance with the monitoring requirements specified above shall be performed at the following locations: outfall 004 -- after the chlorine contact chamber and prior to Pond B, influent -- after the equalization basi^ If the permittee, using the approved analytical methods, monitors any parameter more frequently than required by this permit, then the results of such monitoring shall be included in the calculation and reporting of the values requited in the Discharge Monitoring Report Form (DMRs) or other forms as required by the Division. Such increased frequency shall also be indicated. 2. Salinity Parameters In order to obtain an indication of the quan[iry of Salinity, measured as total dissolved solids (TDS) being discharged from the site, the permittee shall monitor ttte wastewater effluent at the following frequencies: Outfall Frequency Sample Type 001. 002, 003, 004 Quarterly Grab Self-monitoring samples taken in compliance with the monitoring requires specified above shall be taken at those locations listed in Part I.B.I. TDS shall be sampled on a monttily basis until six samples have been analyzed. A repor[ of "No Discharge" shall not be counted as one of the six samples. Thereafter, monitoring shall continue on a quarterly basis. Following submittal of the initial six sets of monthly data, the Division shall determine whether the permittee is required to submit a report addressing sal[ removal in accordance with Regulations For Implementation of the Colorado River Salinity Standards (5 CCR L002-39) . If the salinity report is required, the Division shall so notify the permittee by letter or through the inclusion of a compliance schedule and the report shall be submitted • within 180 days of notification. See Part I.C. for Definitions. Ju~ 2 ~ ~Q9g Effective AUG 0 ~ ~~Q9 Amendment No. I Issued