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iii iiiiiiiuiiiiii <br />COLORADO DEPARTMENT OF PUBLIC HEALTH AND ENVIKVlvmcir• , <br />Rationale -Page 13, Permit No. CO-0017154 <br />Table V-5 - <br />Flow, MGD <br />Total Suspended Solids, mg/P <br />Settleable Solids, mf/C <br />Oil and Grease, mg/P <br />001 <br />Weekly <br />Twice Monthly <br />Monthly <br />Weekly <br />rYater Quality Control Division <br />007 <br />or Continuous <br />Grab <br />Grab <br />Visual a/ <br />pH, s.u. (1Ninimum-Maximum) Weekly In-Situ <br />Electrical Conductivity, umlw/cm Monthly Grab <br />WET, Chronic Lethality <br />Outfalls 001, 005, 007, 020 only Quarterly 3 Grabs/test <br />Cadmium (PD), mg/P Twice Monthly Grab <br />Copper (PD), mg/P Twice MoNhly Grab <br />Iron (IR), mg/P Twice Momhly Grab <br />Manganese (PD), mg/P Monthly Grab <br />Silver (PD), mg/P Twice Momhly Grab <br />• This parameter does nor appty ro outfall 020 <br />Flow <br />MGD Weekly Instantaneous <br />, or Continuous <br />Settleable Solids, mf/! Monthly Grab <br />Oil and Grease, mg/Q Weekly Visual a/ <br />pH, s. u. (Minimum-Maximum) Weekly In-Situ <br />Electrical Conductivity, umho/cm Monthly Grab <br />Cadmium (PD), mg/P Monthly Grab <br />Copper (PD), mg/P Monthly Grab <br />Manganese (PD), mg/P Momhly Grab <br />Silver (PD), mg/P Monthly Grab <br />Flow, MGD Weekly Ittsrantaneous <br />or Continuous <br />Total Suspended Solids, mg/P Monthly Grab <br />Settleable Solids, m!/! Monthly Grab <br />Oi! and Grease, mg/P Weeky Visual a/ <br />pH, s.u. (Minimum-Maximum) Weekly In-Situ <br />Electrical Conductivity, umho/cm Quanerty Grab <br />PD means the potetaialty dissolved fiaeion, as defined in the Basic Standards and Methadologies for Surface Water (31.0). <br />7R means the total recoverable frac~ian, as defined in the Basic Standards and Methodologies for Surface Rater (31.OI. <br />a/ !f a visible sheen is rated, a grab sample shall be collected and analyzed for oil atd grease. The results are to be repoi7ed on <br />the DMR under parameter 03582. <br />