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PART I <br /> Page 5 of 20 <br /> Permit No. CO-0000396 <br /> A. EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS (continued) <br /> • 4. Monitoring Requirements <br /> In order to obtain an indication of the probable compliance or non- <br /> compliance with the effluent limitations specified in Part I , the <br /> permittee shall monitor all effluent parameters at the following <br /> .required frequencies. <br /> Effluent Parameter Measurement Freauency c/d/ Samole Tvoe e/ <br /> Instantaneous <br /> Flow (MGD) Weekly or Continuous <br /> Total Suspended Solids Monthly Grab <br /> (mg/1 ) <br /> Total Iron (mg/1 ) Monthly Grab <br /> Oil and Grease (mg/1 ) Weekly Visual or Grab <br /> pH (s.u. ) Weekly Grab <br /> Salinity f/ Quarterly Grab <br /> Self-monitoring samples taken in compliance with the monitoring <br /> requirements specified above shall be taken at: 001 , 002,003,004,005,006,007, <br /> 008,009,010,01*1 ,012,013,014,015,01.6,017 and 018 as shown in Figure 1 , <br /> Page 19, at outfalls prior to mixing with state waters. <br /> c/ Monitoring is required only during periods of discharge. If <br /> "no discharge" occurs , this shall be reported at the specified <br /> frequency. (See Part B. ) <br /> d/ Should a discharge occur due to .s.nowmel-t; or a rainfall event, <br /> sampling of all parameters shall be done as a minimum at the <br /> beginning and at the end of the discharge. The permittee shall <br /> indicate on the monitoring report when the discharge is caused <br /> by this snowme 1 t or.-ra i nfa l.l.....even, <br /> e/ See definitions , Part B. <br /> f/ Salinity shall be measured as Total Dissolved Solids (TDS) or elec- <br /> trical conductivity where a satisfactory correlation with TDS has <br /> . been established based on a minimum of five (5) samples. Samples <br /> shall be taken at the permitted discharge point. <br /> 1/81 <br />