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COMMENTIRESPONSE DOCUMENT <br />TR105 <br />The Division has received the Tri-State Generation and Transmission Association, Inc's (Tri-State) <br />submittal for Technical Revision 105. The submittal was received on 8 April 2015 and deemed <br />complete on 20 April 2015. The proposed decision date is 19 June 2015. Tri -State's prompt <br />response to this letter will help ensure a decision is proposed in a timely manner. The Division has <br />completed its preliminary adequacy review and has the following comments and questions. <br />General Comments <br />1. The Table of Contents states that Exhibit 7, Item 13 has been superseded. Is this deletion <br />correct and, if so, please detail what has superseded this item. <br />Response: The Table of Contents as submitted was in error should have listed Exhibit 7, <br />Item 13 as containing Permanent Stock Tank Demonstration in Support of Phase III Bond <br />Release as provided by TR -89. Three copies of the revised Table of Contents are <br />provided for Volumes 2C, 2D, and 2E. <br />Rule 2.10- Maps and Plans <br />2. Maps 29 and 29A provide details on backfilling and rough grading operations for the West Pit <br />and South Taylor Pit, respectively. The majority of the reclamation blocks have planned reclamation <br />dates shown. The exceptions are the reclamation blocks that contain topsoil piles. Please add <br />reclamation dates to the reclamation blocks on Maps 29 and 29A that contain topsoil <br />stockpiles. <br />Response: Both maps have been updated as requested for the dates of topsoil stockpile <br />removal. <br />3. On Map 2013- Premining and Postmining Cross -Sections -South Taylor, the blue South Taylor Fill <br />Design line appears to run outside of the current limits of the fill. Please review blue South Taylor Fill <br />Design lines shown on these cross-sections and revise as necessary. <br />Response: The blue fill lines have been truncated at the fill limits. In some cases, this <br />line was out of date as well. Map 20B has been updated and resubmitted. <br />4. On Map 2013- Premining and Postmining Cross -Sections -South Taylor, the black "PMT" line <br />should not extend under the permanent portions of the South Taylor Fills, as these are a permanent <br />feature and are at the post -mining topography. Please review the black "PMT" lines shown on <br />these cross-sections and revise as necessary. <br />Response: The lines have been truncated at the pit limits. <br />5. On Map 2013- Premining and Postmining Cross -Sections -South Taylor, section line 13-13' from <br />approximately stations 10+10 to 20+50 appears to be incorrect. It appears to show this area as being <br />temporary fill and not permanent fill. Please review section line B -B' with regards to the <br />permanent and temporary portions of the fill and correct as necessary. <br />Page 1 <br />