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PART I Page 6 Permit No. COG-850000 B. EFFLUENT LIMITATIONS AND MONITORING REQIIIREMENTS 1. Effluent Limitations (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 is 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 and imposition of each special conditions as are appropriate. 4. Bulk 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 net forth in Section 311 of the Federal Clean Water Act. 5. There shall be no land application of wastewater, other than for dust control. (d) Burden of Proof Requirement The permittee has the burden of proof when requesting relief from total suspended aolida (TSS), total iron and/or settleable solids limitations. Por rainfall, to naive TSS and total iron limitations, it is necessary to prove that discharge occurred within 48 hours after measurable precipitation has stopped. Ia addition, to waive settleable aolida limitations, it is necessary to prove that discharge occurred within 48 hours after precipitation greater than the 10-year, 24-hour 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 inflow has stopped. In addition, to waive settleable aolida 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 as area is which active mining has ceased, all surface areas have be ea 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 post~ining limitations apply to each authorized outfall.