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PART I <br /> Page 5 of 20 <br /> Permit No. : CO-0000396 <br /> A. TERMS AND CONDITIONS (Continued) <br /> 4a. Monitoring Requirements <br /> In order to obtain an indication of the probable compliance or <br /> non-compliance with the effluent limitations specified in Part 1,A. , <br /> permittee shall monitor all effluent parameters at the following <br /> required frequencies- . <br /> Effluent Parameter Measurement Frequency c/d/ Sample Type e/ <br /> Flow (MGD) Weekly Instantaneous or Continuous <br /> Total Suspended Solids (mg/1) Monthly Grab <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 Quarterly f/ h/ Grab <br /> Self-monitoring samples taken in compliance with the monitoring <br /> requirements specified above shall be taken at: 002, 003, 004, 005, and <br /> 019, as shown in figure 1 on page 19, at outfalls prior to mixing with <br /> State waters. <br /> c/ Monitoring is required only during periods of discharge. If "no <br /> discharge" occurs, this shall be reported at the specified <br /> • frequency. (See Part B.) <br /> d/ Should a discharge occur due to snowmelt 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 by <br /> this snowmelt or rainfall event. <br /> e/ See definitions, Part B. <br /> See Part I.A.4.c <br /> AMENDED b 3 <br />