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PART I <br />Page 21 <br />Permit No. COG-600000 <br />C. MONITORING REQUIREMENTS <br />1. Freauencv and Sample Tvce <br />h. cont. <br />(2) Used Pipes, tanks, or other similar vessels: <br />Effluent Parameter Measuremrnt Freauencv Sample Tvne <br />Flow, gpm Twice per Discharge L~stantaneous <br />Total Suspended Solids, mg/P Twice per Discharge Grab <br />Chemical Oxygen Demand, mg/l Twice per Dischazge Grab <br />Total Recoverable Iron, mg/P Twice per Discharge Grab <br />BTEX, mg/P Twice per Discharge Grab <br />Bemm~e, mg/P Twice per Discharge Grab <br />Total Residual Chlorine, mg/P Sce I.B.2.c.(4) Twice per Discharge Grab <br />pH, s.u. Twice per Discharge Grab <br />Oil and Grease, mg/P Twice per Discharge Visual Sce I.D.13. <br />Total Phosphorus as P, mg/P See I.C.2. Monthly Grab <br />Twice per discharge sampling shall be conducted a[ the beginning and end of the testing period. <br />i. Facilities discharging super chlorinated water (50-500 mg/P) from potable waur lines for the <br />disinfection of these lines in a routine or planed situation shall monitor all effiuem <br />pazameters listed at the following frequencies using the listed sample type unless different <br />frequencies are listed on the facility certification. <br />Effluent Parameter Measttrtunrnt Frequency Sample Tvoe <br />Flow, gpm Twice per Discharge Instantaneous <br />Total Residual Chlorine, mg/P Sce I.B.2.c.(4) Twice per Dischazge Grab <br />7~vice per dischazge sampling shall be conducted at the beginning and end of the testing period. <br />