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18 -Left Ventilation Shaft Installation and 16 -Right Stabilization Boreholes (TR09 -66 and MR11 -253) -_TCC
<br />contracted with Metcalf Archaeological Consultants, Inc. to complete an intensive Class III cultural resources
<br />survey of the proposed 18 -Left Ventilation Shaft Installation, in conjunction with the work previously discussed. A
<br />separate survey addressed planned disturbance for the 16 -Right Mine Stabilization Boreholes. The surveys covered
<br />•lands located in Sections 22 and 23, T5N, R87W. No previously recorded sites, isolated finds, or buried cultural
<br />materials were found within the surveyed area. Survey results are presented in the Confidential Appendix, in
<br />Exhibit 6S.
<br />Sage Creek/Twentymile Overland Conveyor (MR11-254) — TCC contracted with Metcalf Archaeological
<br />Consultants to complete an intensive Class III cultural resources survey of a corridor for a proposed overland
<br />conveyor, linking the Sage Creek Mine with the Twentymile Coal Handling Facilities. The survey covered portions
<br />of Section 13, T5N, R87W, and Sections 18, 19, 20, 21, 28, 29, and 32, T5N, R86W, and incorporated a number of
<br />areas that had been previously surveyed. The survey resulted in recordation of one historic road segment, five
<br />previously recorded sites were revisited, and three isolated finds were documented. The historic road segment is
<br />recommended as "non- eligible ", due to historic alteration. One previously recorded site was reevaluated, and the
<br />portion within the surveyed corridor is recommended as "non- contributing ". Construction limits or testing are
<br />recommended for a second previously recorded site. Survey results are presented in the Confidential Appendix, in
<br />Exhibit 6T, Overland Conveyor (MR 11-254) Cultural Resource Information, dated June 2011.
<br />15 -Left Rock -Dust Installation and 16 -Left Utility Borehole (TR11-77, TR11-78) -_TCC contracted with
<br />Metcalf Archaeological Consultants, Inc. to complete intensive Class III cultural resources surveys of the proposed
<br />15LT Ventilation Installation and 16LT Utility Borehole. The surveys covered lands located in Sections 23, 24, 25,
<br />26 and 27,T5N, R87W. No, previously recorded sites, isolated finds, or buried cultural materials were found within
<br />the surveyed area. Survey results are presented in the Confidential Appendix, in Exhibit 6T.
<br />RULE 2.04.5 - GENERAL DESCRIPTION OF HYDROLOGY AND GEOLOGY
<br />Each application shall contain a description and map prepared in accordance with 2.10 of the geology, surface and ground
<br />•water systems including water quality and quantity, of all lands within the proposed permit area the adjacent area and the
<br />general area The description shall include information on the characteristics of all surface and ground waters within the
<br />general area and any water which will flow into or receive discharges of water from the general area. The description
<br />shall be prepared according to 2.04.5 and 2.04.7 and conform to the following:
<br />(a) Information on surface and groundwater systems including water ater quality, water quantity, and
<br />geology related to the bydrolo y of areas outside the permit area and within the general area shall be provided by the
<br />Division to the extent that this data is available from an appropriate Federal or State agency.
<br />(b) If this information is not available from those agencies the applicant magather and submit
<br />this information to the Division as part of the permit application.
<br />(c) The permit shall not be approved by the Division until this information is made available in
<br />the application.
<br />RESPONSE
<br />This application contains comprehensive and detailed descriptions and maps concerning the geology and hydrology of
<br />the proposed permit area, adjacent area, and the general area. The definitions of these areas, as contained in Rule
<br />1.04, have been applied in what TCC believes to be a reasonable manner to the lands surrounding the planned mining
<br />operation. The permit area contains all lands on which the operator will conduct mining operations during the term of
<br />the permit. The adjacent area covers lands and resources outside the permit area which may be adversely affected by
<br />mining operations. The general area includes the topographic and ground water basin surrounding the area to be
<br />mined, including one or more watersheds containing perennial streams and ground water systems. The general area
<br />. is of sufficient size to allow assessments of cumulative hydrologic impacts in the basin.
<br />A strict application of these definitions to Twentymile Park results in the areas shown on Map 4, Proposed
<br />Hydrologic Area Boundaries. The proposed permit area includes all lands to be disturbed by mining activities over
<br />TRI I -78 2.04 -9.1 08/05/11
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