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PART I <br />Page 8 <br />Permit No. CO-0000221 <br />A. TERMS AND CONDITIONS <br />1. Effluent Limitations (continued) <br />i <br />Beginning immediazely and lasting ough July 31, 2002, there shall be no statistically significant difference in <br />lethality (az the 95 `7o confidence level between the control and any effluent concentration less than or equal to the <br />percentage effluent shown in the Poll wing table. Such limitation shall apply as a daily maximum. <br />Outfall Jan-Mar A~trJun Jul-Sep Oct-Dec <br />004 10.8 1 .3 17.3 7.8 <br />008 11.3 9 3 15.0 6.8 <br />2. Burden of Proof Requirements <br />The perminee has the burden of proof wt <br />settleable solids limitations. Relief shall <br />control over the discharge. The pertnitte <br />Division shall Gave final authority in dete <br />this exemption; however, the tnajoriry of <br />be available for any discharge. Outfall 0 <br />should be eligible <br />For rainfall, to waive TSS and total <br />hours after measurable precipitation <br />discharge occurred within 48 hours <br />n requesting relief from total suspended solids (TSS), total iron and/or <br />e gran[ed only when necessary and shall no[ be gran[ed when the petmittee has <br />should endeavor to meet the primary limitations whenever possible. The <br />Wining whether relief is granted. Discharges from all ou[falls aze eligible for <br />3e loading from any discharge has to consist of storm runoff for [he reli~;f to <br />~ consists entirely of surface runoff, thus all discharges from [his outfall <br />3a limitations, it is necessary to demonstrate that discharge occurred within 48 <br />~ stopped. To waivt: settleable solids limitations, it is necessary to pro~~e tha[ <br />er precipitation greater than the 10-year, 24-hour event has stopped. <br />For snowmelt, to waive TSS and tot Iron limitations, it is necessary [o demonstrate that discharge occurred within <br />48 hours after pond inflow has stopp d. To waive settleable solids limitations, it is necessary• to prove that <br />discharge occurred within 48 hours a er pond inflow volume greater than dte 10-year, 24-hour event has stopired. <br />Should a precipitation event or snowmelt <br />be claimed. Weather sta[ion data may b <br />attachmen[ to the Discharge Monitoring <br />adequacy of proof. As pan of this deter <br />con[rolled the discharge in such a manse <br />that are equipped with automatic dewate] <br />manual dewatering capability, relief is a' <br />3. Post-Minine Areas <br />Commencing at the time agtive mining h <br />revegetation has begun, applicable dischs <br />These post-minine limitations shall remai <br />appropriate time so that consideration of <br />See Part I.C. for Definitions. <br />Iccur, the permittee shall submit adequate proof in order for an exemption to <br />appropriate in making this demonstration. Said proof shall be submitted as an <br />epos (DMR) for the appropriate period. The Division shall determine tae <br />ination, the Division shall evaluate whether the pertnittee could have <br />that primary limitations could have been met. All manual dewa[ering o'' ponds <br />Ig systems must meet TSS and total iron limitations. If a pond has only <br />.ilable only to the ex[ent required to regain necessary stability and capac ry. <br />ceased and surface ;tress have been returned to the required contour and <br />es may be eligible for limitations other than those specified in Parts I.~t.l. <br />in effect until bond release. The permittee shall no[ify the Division at the <br />rmi[ modifications tan be made. <br />• <br />INDBP 4/9/93 <br />