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PART I Page 9 Permit No. COR-040000 B. STORMWATER MANAGEMENT PLAN -ACTIVE MQVFS (cont.) be incorporated in the SWMP by refemace, as long as a complete SWMP can be reproduced and submitted to the requesting agency within the time frame ;specified in the request. Those portions of the referenced documents must be included in the submittal. The SWMP mart also be readily available to an on-site inspector. 9. Allowable Non-Stormwater Disc>>ar4es The plea shall identify all sources of irti;gation return flow and natural uncontaminated spring water that are combined with stormwaten• discharges associated with industrial activity. The plea shall identify and ensure the implementation of appropriate measures to Prevent pollutimr of the non-stormuvater component(s) of the discharge. Irrigation return flow and natural spring water which mixes with mine drainage or process water becomes mine drainage or process water. C. STORMWATER MANAGEMENT PLAN -INACTIVE MINES A Stormwater Management Plan (SWMP) shall be developed for each inactive mine covered by this permit. The SWMP shall be prepared in accordance with good mgincering Practices. ('ILe plm need not be completed by a registered engineer.) The plan shall identify potential sources of pollution (including sediment) which may reasonably be expected to affect the quality of stormwater discharges associated with the itactive mining operation. In addition, the plan shall describe and ensure the implementation of best msnagemmt practices (BMPs) which will be used to reduce the pollutants in stormwater dischazges associated with the inactive mining operation. As a condition of this permit, inactive mining operations moat certify the mmpletioa end implementation of the SWMP required under this part. Inactive mining operations must impltment the provisions of their SWMP as a condition of this permit. The Division reserves the right to request and review the plans, and to require additioml measures to prevent and control pollution, as needed. The SWMP shall include the following items, at a minimum: Description of Minin¢ Activities _ The plan shall provide a narrative description of the mining and associated activities that took place at the site. The narrative description shall report the approximate dates of opera[ion, the total acreage within the mine site and as estimate of the number of acres of disturbed area. A gmenl description of the location of the mining site relative to major _ transportation router and communities shall also be provided. 2. Site Meo Each plan shall provide a gmeralir>id site map or maps which indicate any of the following which may be applicable: - mining/milling site boundaries and access sad haul roads; - areas used for storage of overburden, materials, soils, tailings or wastes; - areas used for outdoor manufacturing, storage or disposal of materials; - tailings piles and ponds; - an ~sLi^ of the direction(s) of flow; - existing structural control measures to reduce pollutants in stormwater runoff; and - springs. streams. wetlands and other surface waters. 3. D~eTiotion of Potential Pollutant Sotum/Material Invmton The plan shall provide a description of potential sources which may reasonably be expected to add pollutants to stormwater discharges. The plan shall include on iavmtory and narrative description of my significant materials (see definitions in Part I.D. of this permit) that may still beat the site. This description of sources should agree with sources identified on the map. The SWMP shall assess the potential of these pollutant sources at the mine to contribute pollutants .. to etonavater discharges.