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~- c <br />u <br />A. TERMS e12dD CG:D:TiORS (Continued} <br />c <br />F:.RT 1 <br />Page 2e of 17 <br />Permit no.: CO-OG"''iJr- <br />d. Additional conditicrs - effective at all times. <br />There shall be no discharge of floating solids or visible foam <br />in other than trace amounts. Tire discharge shall not contair. <br />any sanitary sewage or other pollutants not associated ~:ith <br />active pining operations. <br />b. P.eGuiremerts for Effluent Limitation Compliance Determination <br />Within 9G days of the effective date of this permit modification, the <br />per~ittea shall submit to the Division, documentation which specifies <br />the 10-year, 24-hour precipitation event (in inches e` rain) and the <br />volume of water from active mining areas, preparation plants, and <br />associated areas wnicl: would result from a 10-year, Z~-hour <br />precipitation event. This documentatior. sl:ali identify t;e gauge <br />s=atior. be'_ng used. Documentation may be in the form of a letter cr <br />other indication from the Colorado :!fined Lard Reclamation Division, <br />the Feceral Office of Surface Ptining, t}~e Federal Environmental <br />Protection Agency, or other appropriate agency acceptable to the <br />Colorado Wate: Quality Control Divisioc:. <br />J <br />It shell be the permittee's responsibility to document both the <br />rainfall amount and the volume of storm runoff produced, should a <br />crecipitatien event occur (pursuant to 40 CFR 434.o3(c)). ~/ <br />7. Post t:_ring F.reas <br />Pursuant to 40 CFR 434, coamencing at the time [hat active miring <br />ceases, federal post mining effluent limitations for settleable <br />solids (.5 mi%1) shall become applicable, plus at a cinimum state <br />effluent limitation=_ for oil and grease (less than 10 ms; 1) and water <br />qual_ty standards for pE (6.5-0.0 s.u.). When a=rive wining ceases, <br />the pers:i[tee s`.a'_1 r.cit:f}• the Division in writing of changes in the <br />operation and the permit shall be modified acccrding'_y. <br />/b/ j; - See ?age ~. <br />'lodified ~/~ <br />(Added) <br />• <br />