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PART I <br />Page No. 18 <br />Permit No.: CO-0000906 <br />Effluent Parameter <br />Flow, MGD <br />Total Suspended Solids (TSS), mg/l <br />pH, s.u. (minimum-maximum) <br />Oil and Grease, mg/l <br />Iron, Total, µg/I <br />Settleable Solids, ml/l <br />Frequency <br />W eekly <br />Two Days/Month <br />Two Days/Month <br />Two Days/Month <br />Two Days/Month <br />Two Days/Month <br />Sample Tvce <br />Instantaneous <br />Grab <br />In -Situ <br />Visual <br />Grab <br />Grab <br />Self-monitoring sampling by the permittee for compliance with the monitoring requirements specified above shall be <br />performed at the following location(s): 004A, 007A and 008A - at the discharge from Ponds 4, 7 and 8, respectively <br />and prior to commingling with the Middle Fork of the Purgatoire River <br />c. Outfall MON 1 <br />Effluent Pararneter <br />Frequency <br />Sample Type <br />Total Arsenic, µg/l Monthly Grab <br />Potentially Dissolved Cadmium, µg/) Monthly Grab <br />• <br />Total Recoverable Chromium, µg/l <br />Monthly <br />Grab <br />Potentially Dissolved Copper, µg/I Monthly Grab <br />Total Recoverable Iron, Etg/I Monthly Grab <br />Potentially Dissolved Lead, µg/l Monthly Grab <br />Potentially Dissolved Manganese, µg/l Monthly Grab <br />Total Mercury, µg/I <br />Quarterly <br />Grab <br />Potenitally Dissolved Nickel, µg/l Monthly Grab <br />Potentially Dissolved Selenium, µgd Monthly Grab <br />Potentially Dissolved Silver, µg/I Monthly Grab <br />Potentially Dissolved Zinc, µg/l Monthly Grab <br />Total Boron, mg/l Monthly Grab <br />Total Recoverable Aluminum µg/l Monthly Grab <br />Self-monitoring sampling by the permittee for compliance with the monitoring requirements specified above shall be <br />performed at the following location(s): MON1, at the same location as Outfall 001A. <br />d. Outfall MON9 <br />0