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Data. Dewatering, drawdown and solute transport characteristics have been modeled using the analytical methods <br />described in "Ground Water Hydraulics" (Lohman 1979), "Selected Handheld Calculator Codes for the Evaluation <br />of the Cumulative Hydrologic Impacts of Mining" USDI. Office of Surface Mining 1981, and the finite - difference <br />• GRWATER computer model described in "Ground Water Hydrology and Hydraulic" (McWhorter and Sunada <br />1977). <br />(3) Permit applications may comply with the requirements of 2.04.5(1) 2.04.6(1)(a) 2.04.6(2)(a) <br />and 2.04.7 by providing accurate descriptive and predictive information relating to geology,' water quality and <br />quantity for the area to be affected over the estimated life of the operation based upon extrapolation by an expert <br />in the field from documented data on the geology, water quality and quantity of similar areas provided that the <br />data used by the expert is included within the .permit application, the expert opinion is approved by the Division <br />and all such data are made available to the public for review and comment. <br />RESPONSE <br />The information and analysis referenced above represents over five years of data collection in the permit and <br />adjacent area by Federal and State agencies, private organizations and universities. Conclusions and opinions of <br />experts of each field may be found in the accompanying exhibits. The conclusions and opinions were derived by <br />extrapolation of the data collected in the permit and adjacent areas. <br />RULE L.IE 2.04°6 - GEOLOGY DESCRIPTION <br />(1) General Requirements - The geology description shall include a description of the geology <br />(stratigraphy and structure) within the proposed permit and adjacent areas This description shall be sufficient in <br />cletail tn- <br />(a) Define the relationship between structural geology and the occurrence movement <br />•quality and quantity of potentially impacted surface and groundwater; <br />b Assist in determining the feasibility of the <br />proposed reclamation plan; <br />(c) Assess the potential for off -site material damage to the hydrologic balance; <br />(d) Assist in the preparation of the probable hydrologic consequence statement and the <br />establishment of the hydrologic monitoring plan; and <br />(e) Assist in the preparation of the subsidence control plan under 2 05 6(6) <br />RESPONSE <br />The information required by this rule can be found in the responses provided to Rule 2.04.6 (3). The text for this <br />response starts on page 2.04 -12.1 and onto 2.04 -19. This referenced section addresses the general geology <br />discussion required by this rule. Additional information addressing the hydrologic component of this rule can <br />be found in Rule 2.04.7. The text for this rule can be found on pages 2.04 -19 through 2.04 -43. <br />In reference to the geologic information presented and the overburden characterization associated with addressing <br />the feasibility of the reclamation plan it should be noted that the TCC facilities are located next to the Colorado <br />Yampa Coal Company reclaimed surface mine. The surface mine has been successfully reclaimed and the TCC <br />surface facilities will utilize the same resources and reclamation techniques as applied to the surface mine. <br />(2) Surface Mining <br />• (a) The description shall include a general statement of the geology (strati rUhy_) and <br />structure) within the proposed area to be affected over the life of the operation down to and including the first <br />aquifer and other coal seams, if any, below the lowest coal seam to be mined A eolo ig c map with jzeologic <br />MR 11 -254 2.04 -12 06/28/11 <br />