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i ..- C <br />.. P r r <br />Page 4b of 17 <br />Permit No.: CO-0027154 <br />• A. TERMS AND CONDITIONS (continued) <br />11. Monitoring Requirements Discharge Point 005 - Effective beginning <br />January 1, 1984 and lasting through December 31, 1985 <br />In order to obtain an indication of the probable compliance or <br />noncompliance with the effluent limitations specified Sn Part I.A.S., <br />the permittee shall monitor all effluent parameters at the following <br />required frequencies: <br />a. Effective during periods of no precipitation or precipitation <br />less than or equal to the 10-year-24 hour event. <br />Effluent Parameter Measurement Frequency c/ Sample Type e/ <br />Flow (MGD) Weekly Instantaneous <br /> or Continuous <br />Total Suspended Solids 1/ Monthly Grab <br />(mg/1) <br />Settleable Solids (ml/1)1/i/ Weekly Grab <br />Total Iron (mg/1) 2 X Monthly Grab <br />Hexavalent Chromium (mg/1) 2 X Monthly Grab <br />Total Copper (mg/1) 2 X Monthly Grab <br />Total Silver (mg/1) 2 X Monthly Grab <br />Total Piercury (mg/1) 2 X Monthly Grab <br />• <br />Total Zinc (mg/1) 2 X Monthly Grab <br />Oil and Grease (mg/1) Weekly Visual or Grab <br />pH (s.u.) Weekly Grab <br />Salinity ~/ Qu arterly f/ h/ Grab <br />Self Monitoring samples taken in compliance with the monitoring <br />requirements specified above shall be taken at the following <br />locations: 005, the outfall of sedimentation Pond D as shown in <br />Figure 1 on Page 17a of the permit. <br />1/ Either TSS or settleable solids will require monitoring. It <br />is the permittee's option on which monitoring to perform. <br />During dry weather conditions TSS must be monitored. <br />b. Effective during periods of precipitation in excess of the <br />10-year, 24-hour event. <br />Effluent Parameter Measurement Frequency Sample Tvpe e/ <br />Flow (MGD) <br />Total Suspended Solids 1/ (mg/1) <br />Settleable Solids (ml/1~ 1/i/ <br />Total Iron (mg/1) <br />• Hexavalent Chromium (mg/1) <br />Total Copper (mg/1) <br />Weekly <br />Monthly <br />Weekly <br />2 x Monthly <br />2 x Monthly <br />2 x "fonthly <br />Instantaneous <br />or Continuous <br />Grab <br />Grab <br />Grab <br />Crab <br />Crab <br />Modified 10/7/83 <br />(Added) <br />Corrected 7/9/84 <br />.4 mended .;/~ ~•/; ~~ <br />