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1 <br />PART i <br />Page 6 <br />Permit No. COG-850000 <br />B. EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS <br />1. Effluent Limitations (continued) <br />d) Burden of Proof Requirement <br />The permittee has the burden of proof <br />total suspended solids (TSS), [otal i <br />limitations, Relief shall be granted <br />not be granted when the permittee has <br />The permittee should endeavor to meet <br />whenever possible. <br />when requesting relief from <br />'on and/or settleable solids <br />only when necessary and shall <br />control over the discharge. <br />the primary limitations <br />1) For rainfall. to waive TSS and total iron limitations, it is <br />necessary to prove that discharge occurred within 48 hours after <br />measurable precipitation has stopped. In addition, [o waive <br />settleable solids limitations, i[ is necessary to prove the[ <br />discharge occurred within 48 hours after precipitation greater <br />than the 10-year, 24-hour event has stopped. <br />2) For snowmelt. to waive TSS and total iron Jimitations, it is <br />necessary to prove that discharge occurred within 48 hours after <br />pond inflow has stopped. In addition, to waive settleable <br />solids limitations, it is necessary co prove that discharge <br />occurred within 4& hours after pond inflow volume greater than <br />the 10-year, 24-hour even[ has stopped. <br />The Division shall determine the adequacy of proof. As part of <br />this determination, the Division shall evaluate whether the <br />permittee could have controlled the riiscl~arge in such a manner the[ <br />primary limitations could have been met. All manual dewatering <br />must meet TSS and total iron limitations. <br />2. Stormwacer Management Plan <br />The permittee shall prepare and submit two copies of a Stormwater <br />Management Plan (SWMP) co the Water Quality Control Division, The <br />plan shall be submitted within six months Erom [he dace Ghat <br />certification under this oermi[ was eran[ed to the facili[v. An <br />additional copy of the plan shall be submitted to: <br />Colorado Department of Natural Resources <br />Mined Land Reclamation Division - Coal i4ining Section <br />423 Centennial Building <br />1313 Sherman Street <br />Denver, CO 60203 <br />The Division will review and approve each plan. Upon approval, the <br />plan shall be incorporated into the permittee's certification by <br />reference. Failure to implement the approved plan as described shall <br />be a violation of [he permit. The plan shall remain in effect as long <br />as Che facility is regulated by a CDPS permit. <br />