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PART I <br />• Page 5 of 29 <br />~ Permit No.: CO-0038776 <br />EFFLUENT PARAMETER DISCHARGE LIMITATIONS <br />Maximum Concentrations <br />Maximum Mass <br />30-day avg. 7-day avg. Daily Max. <br />80D5, mg/1 (lb/day) 30 (2.5) a/ 45 (3.75) c/ N/A <br />Total Suspended Solids, mg/1 <br /> (Ib/day) 30 (2.5) a/ 45 (3.75) c/ N/A <br />Fecal Coliforms, ~/]00 ml 6000 d/ 12000 d/ N/A <br />Total Residual Chlorine, mg/1 N/A N/A 0.5 e/ <br />Flow, MGD 0.01 N/A N/A <br />pH - standard units shall remain between 6.5 and 9.0. e/ <br />Oil and Grease shall not exceed 10 mg/1 in any grab sample nor shall there be <br />a visible sheen. e/ <br />4. Percentage Removal Requirements (8005 and TSS Limitations) <br />In addition to the concentration limitations on Total 80DSS and Total <br />Suspended Solids indicated above, the arithmetic mean of Ehe total <br />GODS and the Total Suspended Solids concentrations for effluent <br />samples collected in a period of thirty (30) consecutive days shall <br />not exceed fifteen (15) percent of the orithmetic mean of the <br />concentrations for influent samples collected at approximately the <br />same times during the same period (85 percent removal). <br />a/ - The thirty (30) day average concentration shall be determined by an <br />arithmetic mean. A minimum of three or more samples collected in separate <br />calendar weeks during a thirty (30) consecutive day period with a minimum <br />of twenty (20) days occurring between the first and last sample days are to <br />be used in the calculation. Samples may not he used for more than one <br />reporting period. (Not applicable to fecal coliform determinations - please <br />see footnote c/. <br /> <br />