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the low flow of the river. <br />In summary, the impact of mining on the ground water hydrologic system will be <br />minimal, primarily because of the limited amount of ground water that is <br />naturally found in the area. <br />Other than the Deserado Mine, there are no permitted coal mining operations in <br />the State of Colorado presently situated within the drainage basin of the White <br />River. Therefore, no significant cumulative hydrologic impacts upon the White <br />River are expected in Colorado other than those predicted to occur as a result of <br />the mining activities at Deserado Mine. The Division finds, in accordance with <br />C.R.S. 34- 33- 114(2)(c) and Rule 2.07.6(2)(c), that the operation has been <br />designed to prevent material damage outside the permit area. <br />IV. Topsoil -Rule 4.06 <br />A. The Division previously found that the proposed "reverse sequence soil <br />replacement" plan, in conjunction with the proposed field trials, is appropriate for <br />refuse area reclamation, pursuant to 4.06.2(4)(a). This finding is based on field <br />observations of topsoil and subsoil stockpile vegetation cover, evaluation of <br />topsoil and subsoil chemical and physical characteristics, and observation and <br />evaluation of RP -1 revegetation data. The subsoil will be more suitable for <br />sustaining desired vegetation than the available cheatgrass- infested topsoil. Within <br />the refuse areas, a minimum of one foot of topsoil will be replaced, with a <br />minimum nontoxic cover (topsoil and subsoil) thickness of 30 inches. The operator <br />has committed to document that suitable quantities of topsoil /cover material are <br />being salvaged. <br />V. Sealing of Drilled Holes and Underground Openings -Rule 4.07 <br />Sealing of wells, holes, and other openings is discussed n Section V.F of Vol. 4 of the <br />permit application. <br />A. Underground openings requiring sealing at the mine include mine portals, mine <br />shafts, groundwater monitoring wells, one alluvial water well, gas injection <br />boreholes, breathable air holes and vent degasification wells. The Division will <br />require that each hole, well, or other underground opening be capped, sealed, <br />backfilled, or otherwise properly managed (4.07.3). <br />VI. Use of Explosives — Rule 4.08 <br />No specific approvals are granted to the applicant under this section. <br />VII. Disposal of Excess Spoil — Rule 4.09 <br />No specific approvals are granted to the applicant under this section. <br />33 <br />