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Twentymile Coal Company submitted additional information reearding Pond D on December 6, 1999. Upon review of these materials, the Division had the remaining concerns, which were forwarded to Twentymile Coal Company in the January ] 4, 2000, adequacy letter. The new pond Dstage/storage map does not match the new SEDCAD runs done in iLlay for Pond D. What specifrc information in the currently approved permit shoed be removed from the permit? Twentymile Coal Company submitted a reply on January l8, 2000 that, "The pond design submitted by Montgomery Watson is the appropriate one to use for evaluating this pond. Montgomery Watson redid the design and is dated July 23, 1999. This addressed the MSHA design requirement." After review of infotmation submitted by Twentymile Coal Company in January, 2000, the Division now asks: should any of the outdated information currently in Exhibit 8H for pond D be removed (i.e. WET calculations, etc.)? If not, the only item remaining is an as-built P.E. certification for pond D referencing Exhibits 8H and 8H(1). Please submit an as-built P.E. '~ certification for pond D referencing Exhibits 8H and 8H(1). Pond G -This pond services a small disturbed area at the Foidel Creek mine and a much larger area of Mine 1, permit # C-81-071. The original design information should be included with a detailed demonstration that the disturbed area and the watershed characteristics are substantially less than the design assumptions. The EPP survey for Pond G is not certified. Please provide an as-built P.E. certification Pond G stating that the pond was built in accordance with the Rules and the design as presented in Exhibit 8J. Pond T -Information for Pond T could not be located in Exhibit 8. Design information and an appropriate as-built certification is required to demonstrate compliance with Rule 2.0.3(-l) and Rule 4.05.6. ~ Twentymile Coal Company's January 18, 2000 submittal indicated that the design information for this pond is presented in Exhibit 8P. The certification was taken directly from CYCC's certification file and a copy of it can be inserted into Exhibit 8q. This issue for pond T is now resolved. Pond C -Design information and an appropriate as-built certification is required to demonstrate compliance with Rule 2.0.3(4) and Rule -1.O.i.6. `~ Twentymile Coal Company's January 18, 2000 response indicated that the design information for pond C is found in Exhibit 8p. The certification can be found in Exhibit 8g. This issue for pond C is now resolved. Pond E (FCT) -The EPP survey was not certified. As the Fish Creek Tipple permit information is organizationnllysepatate from the Foidel Creek permit, discussion of the operation, maintenance, and plans to remove the structure should be added to Volume VII of the permit !o demonstrate compliance with Rule 2.0.3. (4)(a)(ii)(D). The certification of the repairs discussed in the 1?/16/96 certification should be submitted for this pond. C:\JHB\C82056\RN03\020100resp.doc 7