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PART I <br />Page 18 <br />Permit No. CO-0000221 <br />D. SPECW, REQUIREMENTS <br />2. Stormwater Requirements <br />a. General Limitations <br />1) Stotmwater which mixes with <br />2) Stormwater discharges from <br />pollution, wntamination or <br />3) Bulk storage structures for pt <br />contain all spills and prevent <br /> <br />water or mine drainage is subject to effluent limitation guidelines. <br />or inactive mining operations activities shall not cause or threaten to c:mse <br />ttion of State waters. <br />um products and oth<:r chemicals shall have adequate protection so as tc <br />spilled material from entering State waters. <br />b. Stormwater Mana ep ment Plan - <br />2) <br />A Stormwater Management Plan (SN <br />are covered by this section of the p <br />practices. (The plan need not be cot <br />pollution (including sediment) which <br />associated with the mining operation. <br />management practices (BMPs) which <br />mining activity and to assure complit <br />~P) shall be developt~ for the portions of the Seneca Mine Complex that <br />trait. The SWMP shall be prepared in accordance with good engincering <br />rleted by a registered engineer.) The plan shall identify potential sources of <br />tay reasonably be expected to affect the quality of stormwater discharges <br />In addition, the plan shall describe and ensure the implementation of bt:st <br />+ill be used to reduce; the pollutants in stormwater discharges associated with <br />ce with the terms and conditions of this permit. <br />Permittees must implement the pro~isioas of their SWA1P as a condition of this permit. The Division res:rves <br />the right to review the plan, and to r quire additional measures to prevent and control pollution as needed. Tn <br />SWMP shall include the following it~ms, at a minimum: <br />t) Descriotion of Minine Activitie~The plan shall provide a narrative description of the mining and associated <br />activities taking place at the Sen a Mine Cotttplex, or having taken place in the past, which affect or may <br />affect stormwater runoff intend to be covered by this permit. The narrative description shall report the total <br />acreage within [he mine site and Ian estimate of the nwnber of acres of diswrbed area. <br />contribute runoff to areas <br />ens Guidelines. The SWMP shall describe the portions of the site which <br />to effluent limitation:; guidelines contained in 40 CFR subchapter N. <br />3) Site Man. The plan shall <br />For the entire area: <br />- mining/milling site boundar <br />- equipment storage, fueling <br />- materials handling areas; <br />- areas used for storage of or <br />- areas used for outdoor man <br />- location of mine drainage c <br />- tailings piles/ponds, both n <br />- mine drainage or any other <br />- springs, streams, wetlands <br />- boundaries of areas that coi <br />For those areas outside of the ; <br />guidelines: <br />- an estimate of the directia <br />- stormwater outfalls and an <br />- each existing swcmral coi <br />- the location of impervious <br />a site map or maps which indicate the following information, at a mini num. <br />and access and haul roads: <br />maintenance areas; <br />rburden, materials, soils or wastes: <br />acmring, storage or disposal of materials; <br />any other process water; <br />~ and pre-existing; <br />rocess water discharge points; <br />d other surface waters; and <br />ribute runoff [o outfalls that are subject to effluent limitations guidelines. <br />s that contribute wtoff [o outfalls that are subject to effluent limitations <br />of flow; . <br />line of the drainage area of each stormwater Dutfall; <br />I measure to reduce pollutants in stormwater runoff; and <br />icwres (e.g. parking; lots, roofs, etc.) <br />INDBP 4/9/93 <br />