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PART i Page 6 Permit No. COG-850000 B. EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS 1. Effluent Limitations (continued) d) 3urden of Proof Requirement The permictee has the burden of proof total suspended solids (TSS}, total i limitations. Relief shall be granted not be granted when the permittee has The permiuee should endeavor to meet whenever possible. when requesting relief from :on and/or settleable so Lids only when necessary and she d control over the discharge. the primary limitations i) For rainfall, to waive TSS and total iron limitations, it is necessary co prove that discharge occurred within 43 hours attar measurable precipitation has stopped. In addition, to waive seccleabLe solids limitations, is is necessary co Drove that discharge occurred within 42 hours altar precipitation greater than the 10-year, 24-hccr ever.[ has stopped. 21 For snowmelt. to :naive TSS and co cal iron ].imicaciocis, it is necessary co prove chat discharge occurred within 48 hours attar pond inflow has stopped, In addition, co wai~~e settleable solids limitations, is is necessar;~ co prove chat discharge occurred within 4& hcurs 3Lter pond in=low volume greater [h an the 10-veer, 24-hour event has stopped. The "u iv is ion shall determine the adequacy of proof. As Dart of this decermiracion, the Division shall evaluate whether [he permittee ceuld have controlled the discharge in such a manner that primary limitations could have been me r. A11 manual dewacering must meet rS5 and co cal iron limitations. 2. Stormwacer Mar.agemenc Plan T_he permitcee snail or=_pare and submit two COD 185 of a Stormwatar Management 21an (StJhlP) to the 'dater Quality Control Division. T, he oLan shall be submitted within six months from the dac=_ chat certi=icacion under this oermit as pranced to the fac'1~- an- additional copy o[ the olan shall be submitted co: ~ciorado Department o2 ya Aral 3esources Mined Lana RecLamacton Division - Coal :^.ining Section ~Z3 Centennial Buildi^.g i'_i: Sherman Street Denver, CO 3020'. The Division will review and aopcove each plan. Uoon ap?rovaL, the plan shall be Lncornoracaa into the permittee's cercificacion by reference. ,allure to implement the approved Dian ss described shall be ~ ~~io is don of the oermi=. The ?inn shai'_ .=_main in -_fecc 3s vmk as the .ac '_'_i _•; _., -=_guiaced Se a -;OPS pe r^~i t.