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COLORADO DEPARTMEM OF PUBLlC HEALTH AND ENVIRONMENT, W¢ter Quality Control Di visi¢rt Rationale -Page B, Permit No. CO-0038776 b. stormwater Management Plans (SWMPs): The purpose of a SWMA is to identify possible pollutant sources to stormwater an to set out est mana event practices that, when imylemenied, will reduce or eliminate any possible water quality impacts. A SWMP must ~e maintained for the West Elk Mine in accordance with good engineering practices. (The plan need notbe completed by a registered engineer.) The Division has a guidance document available on preparing a SWMP. The plan identifies potential sources of pollution (including sediment) which may reasonably be expected to affect the quality of stormwater discharges associated with minirsg or remediation operations. In addition, the plan describes practices, which will be used to reduce the pollutants in stormwater discharges from the mining or remediation operation, and to assure compliance with the terms and conditions of this permit. Facilities must implement the provisions ojtheir SWMP as a condition ofthir permit. There are separate sections in this permit addressing SWMP requirements for pollutant sources in active and inactive portions of the West Elk Mine. i. SWMP For Active Mining Operations -Contents a) Description ofmining activities b) Area subject to efjltient limitations guidelines c) Site map stormwater management controls sources and BMPs and response procedures 11 IdenhficaYion afdischarges other than stormwater e) omprehensive inspection ii. SWMP For Inactive Mining Operations -Contents a) Description afmining activities b) Site map c) stormwater management controls - Identification of potential pollutant sources and BMPs 1) Stormwaterdiversion 2 Sediment and erosion prevention d) omprehensive inspection e) Addrtionalliems Additional SWMP Requirements apply if the West EIk Mine seeks terminations of the stormwater portion of this permit. In the event that the permutee wakes to remediate an inactive mine site and terminate permit coverage, prior to remediation activities, the SWMP must be amended to include the following items, and the perminee must notify the Division of the change in status: 1) Documentation ojlandownerpermirsion (ifthepermittee is not the owner) 2) Photographs 3 Description of remedial action to bepetformed Description o BMPs durin remediation activities ) Procedures or disposal of anyy water stored within mine waste 6) Description ofpermanent BMPs to be used, final site stabilization, and ultimate land use SWMP Develo ment Coordination and Format: Some activities required under the SWMP may already be in place. owever, t e - wi require t e ermihee to coordinate these activities with any necessary new activities to an orderly . manner, so that the result u the reduction or elimination of pollutants reacF.ing state waters from areas not limited by numeric effluent limitations. It is the perminee's responsibility to notify the Colorado Division of Minerals and Geolo~ (CDMG) of any changes at their site resulting from the implementation of the SWMP. This notification allows the DMG to review the SWMP and incorporate any potential revisions, which mi ht be needed into the facility's reclamation permit. Ir is im arrant to verify that the site reclamation permit matches the S~MP. Such information u usually contained in Exhibit G ofP10 reclamation permits. The SWMP may gely upon information developed for other similar pollution control programs such as the SPCC (Sill Prevention Control and Countermeasures) plan, Voluntary Cleanup Plan, or the Mined Land Reclamation Plan. Appropriate portions o these other plans may be incorporated ~in the SWMP by reference, as long as a complete SWMA~ can be reproduced and subminea 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 must also be readily available So an on-site inspector. c. Com rehensive Facili Ins ections: The permittee shall make a thorough inspection of their stormwater management system, at east twice per yyear in the sprin and fall). These inspections must be documented and summarized in the Annual Report (see Part I1J.2.g ojthe permit d. Annual Re art: The permittee will be required to submit an Annual Report, covering January 1 through December 31 of eat year, on the compliance with the SWMP. The Annual Report shall contain, at a minimum: i. A report on the facility's overall compliance with the SWMP, including a progress report on remediation activities. ii. A summary of all comprehensive stormwater inspections made. iii. Results and intetpretahon of any stormwater monitoring pet formed. the Annual Report will be due to the Division on or before February IS of the following year (see Part ID.2.g of the permit). - All reports required for submittal shall be signed and certified for accuracy by the permittee. (See Part IE.ti. of the permit) Last Revised: 4/19/2004