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B. EFPLUENT LIMITATIONS AND MONITORING REQUIREMF,NTS 1. Effluent Limitations PART I Page 6 Permit No. COG-850000 (c) General Limitations - Active and Poet-Mining 1. There shall be no discharge of sanitary waste waters from toilets or related facilities. 2. There shall be no discharge of floating solids or visible foam in other than trace amounts. 3. No chemicals are to be added to the discharge unless permission for the use of a specific chemical is granted by the permit issuing authority an_d imposition of such special conditions as are appropriate. 4. Sulk storage structures or petroleum products and other chemicals shall have adequate protection so as to contain all' spills and prevent the material from entering discharged waters or waters of the state. Additional requirements are set forth in Section 311 of the Federal Clean Water Act. 5. There shall be no land application of wastewater, other than far dust control. (d) Burden of Proof Requirement The permittee has the burden of proof when requesting relief from total suspended solids (TSS), total iron and/or settleable solids limitations. For rainfall, to waive TSS and total iron limitations, it is necessary to prove that discharge occurred within 48 hours after measurable precipitation has stopped. In addition, to waive settleable solids limitations, it is necessary to prove that discharge occurred within-48 hours after precipitation greater than the 10-year, 24rhour event has stopped. For snowmelt, to waive TSS and total iron limitations, it is necessary to prove that discharge occurred within 48 hours after pond Snflow has stopped. In addition, to waive settleable solids limitations, it is necessary to prove that discharge occurred within 48 hours after pond -inflow volume greater than the 10-year, 24-hour event has stopped. The division shall determine the adequacy of proof. (e) Poat-Mining Areas A post-mining area is defined as an area in which active mining has ceased, all surface areas have been returned to the required contour and revegetation has begun. When the area serving an outfall meets these requirements the permittee shall notify the division so that appropriate modifications can be made. Each facility certification shall state whether active or poet-wining limitations apply to each authorized outfall.