2014-07-16_REVISION - C1981044 - Laserfiche WebLink

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The Division respectfully requests that once all items are resolved; please submit all pages, exhibits, and maps revised with Renewal #6 for Williams Fork Mines' PAP as a revision. MCM Response: MCM has reviewed and revised the relevant PAP text and maps consistent with the referenced Mid -Term responses. All revised Mid -Term and Permit Renewal PAP materials have been assembled as a package and are being submitted with these responses as a Minor Revision (TR14 -36) to the Williams Fork Mine Permit. 2. Permit page 2.05 -4 contains details regarding the "Mine Sequence" at the Williams Fork Mines. This section of the permit contains specific dates, timing and permit term information that are out of date. Additionally, since the mine has been in Temporary Cessation since 1995 and the mine sequence information was last updated in 2004, the proposed mining discussed in this section may not be correct. Please review the dates, timing and permit term information contained in the "Mine Sequence" section of the permit, beginning on page 2.05 -4 and update as necessary. Please update the proposed mining to reflect the current plans for the Williams Fork Mines. If no additional mining is proposed, please provide a justification for keeping the mine and facilities idle and not reclaiming the site. a. MCM Response: The Permit description of mine sequencing and timing has been reviewed and revised, as appropriate, to reflect current and reasonably foreseeable near -term conditions and plans. Copies of the revised Permit discussion accompany these responses for replacement in the PAP. b. DRMS Response: Item resolved Permit page 2.05 -7 contains a discussion of the drilling activities and planned future monitoring of wells 94- 001 and 95 -14. Based on a review of current drill holes and hydrological monitoring sites, the status of these wells is unclear. Hole 95 -14 is shown on Map 11— Hydrologic Monitoring Program Location Map but it is not sampled, included in the Annual Hydrology Report or shown on AHR Figure 2 — Hydrologic Monitoring Program Location Map. The Division could find no other reference to hole 94 -001. Please review the information on page 2.05 -7 for holes 94 -001 and 95 -14 and update their status as necessary. Please provide the Division with a discussion of proposed well 95 -14 and its possible inclusion in the hydrologic monitoring plan. a. MCM Response: The specific Permit text discussion relating to the referenced wells has been reviewed and revised to clarify and update the status and use of these wells. Copies of the revised Permit discussion accompany these responses for replacement in the PAP. b. DRMS Response: The information regarding this well was revised and placed on page 2.05 -2. The revised page indicated Well DPP -94 -001 was plugged and sealed and released by CDRMS in 2012. A record of the abandonment of this well could not be located. Please provide the abandonment report for this well. Response: Further review of the status of Well DPP -94 -001 indicates that it was not abandoned and that it still exists. The relevant text has been revised to reflect this correction and the revised page is included with these responses. MCM has identified several old wells that remain from previous owners /operations, and is currently developing plans to plug and seal these wells. 4. Permit page 2.05 -9 discusses the Multiple Services Building at the Mine 5A portals. During 2010 and early 2011 MCM has removed oil tanks and barrels of waste oil and other products. Please update the status and reclamation activities of the Multiple Services Building on permit page 2.05 -9. a. MCM Response: The specific permit text description of the Multi- Services Building has been reviewed and updated to reflect recent site activities. Copies of the revised Permit discussion accompany these responses for replacement in the PAP. b. DRMS Response: This item is resolved. 5. Permit page 2.05 -12 discusses the "Mine Water Handling System ", which pumps water from the No. 5 mine to the surface (for discharge through pond 5P -7 to the Williams Fork River). In late 2010 the mine pump went