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B. EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS <br />1. Effluent Limitations --_ <br />• a. Active Mining Outfalls <br />ACTIVE MINING PRIMARY LIMITATIONS <br />Flow, MGD Report Report <br />'Total Suspended Solids, mg/1 35 70 <br />Total Iron, mg/1 <br />Existing Sources 3.5 7.0 <br />New Sources 3.0 6.0 <br />Total Manganese, mg/I 2.0 4.0 <br />'Settleable Solids, mUl Report Report <br />pH, s.u. N/A 6.5-9.0 <br />Oil and Grease, mg/1 N/A 10 <br />Total Dissolved Solids, mg/1•• Report Report <br />Total Phosphoms (as P), mg/1••• Report Report <br />PART,I <br />Page No. 4 <br />Permit No. COG-850000 <br />ACTIVE MINING ALTERNATE LIMITATIONS <br />Any discharge or increase in the volume of a discharge caused by precipitation within any 24-hour period less than or equal to the <br />10-vear, 24-hour precioitation event (or snowmelt of equivalent volume) >?~ comply with the following limitations --subject to <br />btuden ofproofrequirements described in Part LB.Ld). <br />. ..,.-._......___.._____._.-._._YY.____.-._._....~_..___...._...-...... <br />Flow, MGD .._..._.._._.w.....,_,~ ..-,-~.. <br />Report _.,.,..._-__-____.._-.._ <br />Report <br />*Total Suspended Solids, mg/1 Report Report <br />Total Iron, mg/] - . - <br />Discharges from mountaintop removal, and steep slope areas. Report 7.0 "` <br />All other discharges covered under this permit ~ Report ~ ~ - - - ~ ~ Report <br />Total Mutganese, mg/I Report Report <br />'Settleable Solids, mUl Report 0.5 <br />pH, s.u. N/A 6.5-9.0 <br />Oi] and Grease, mgA N/A 10 <br />Total Dissolved Solids, mg/1•• Report Report <br />Total Phosphoms (as P), mg/1••• Report Report <br />"" These alternative limitations pertain to storm evrnts less than a 24-hour period, less than or equal to a two-year, 24-hour precipitation event (or snovmulrot <br />equivalent volume) only. <br />'Total Suspended Solids, mg/1 Report Report <br />Total Iron, mg/1 Report Report <br />Total Manganese, mg/1 Report Report <br />'Settleable Solids, mUl Report Report <br />Oil and Grease, mg/1 N/A ]0 <br />Total Dissolved Solids, mgA•• Report Report <br />Total Phosphorus (as P), mg/1+•+ Report Report <br />•If discharge is to land, TSS and settleable solids monitoring is, waived.""Applies only to drainages within the Colprado River Basin <br />`''Applies only to drainages directly above Chatfield Reservon, Cherry Creek Reservon, Ddlon Reservoir, or Upper Sear Creek <br />Any discharge or increase in the volume of a discharge caused by precipitation within any 24-hour period Beater than the 10-vear, <br />24-haw precipitation event (or snowmelt of equivalent volume) ~ comply with the following limitations -- subject to burden of <br />proof requirements described in Part I.B.I.d). <br />