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Coal Merhame DmimaRe Projer!- PameU 1 G-24 Werr E!k Miue • PaRe 3A Alternative 2 includes construction and use of 6 drainage crossings and use of 11 existing drainage crossings. Eight crossings would be decommissioned when the temporary roads aze obliterated by 2008, leaving 7 crossings remaining on previously existing classified roads and 2 crossing remaining on the Sylvester Gulch Project Access Route.. Although the conditions For project approval (Section 2.4.1) include mitigation measures to decrease impacts, some sedimentation would occur in steams during road constructioq road use, and road decommissioning. 3.1.2.5 Alternative 3, Minnesota Creek/Horse Gulch Access New road construction would result in a 30 foot wide disturbance area. Construction of roads on locations where roads historically existed would result in 15 feet disturbance width. Estimated surface disturbance for road construction in Altemadve 3 would be 25.1 acres. Estimated surface disturbance for road decommissioning would be 59.6 acres. Estimated surface disturbance for construction and obliteration of 54 drill pads would be 37.8 acres. Although the conditions for project approval (Section 2.4.1) include titigation measures to decrease impacts, this disturbance would result in soil movement, erosion, and reduction in productivity. Alternative 3 includes construction and use of 5 drainage crossings and use of 11 existing drainage crossings. Nine crossings would be decommissioned when the temporary roads aze obliterated by 2008, leaving 7 existing crossings remaining on classified roads. Although the conditions for project approval (Section 2.4.1) include mitigation measures to decease impacts, some sedimentation would occur in steams during toad construction, road use, and road decommissioning. 3.1.2.6 Alternative 4, Sylvester Gulch Short-Term Access New road construction would result in a 30 foot wide disturbance area. Construction of roads on locations where roads historically existed would result in ]5 feet disturbance width. Estimated surface disturbance for road construction In Alternative 4 would tae 29.5 acres. Estimated surface disturbance for road decommissioning would be 56.4 acres. Estimated surface disturbance for construction and obliteration of 54 drill pads would be 37.8 aces. Although the conditions for project approval (Section 2.4.1) include mitigation meastttes to decrease impacts, this disturbance would result in soil movement, erosion, and reduction in productivity. Alternative 4 includes construction and use of 6 drainage crossings and use of 11 existing drainage cossings. Ten cossings would be decommissioned when the temporary roads aze obliterated by 2008, leaving 7 existing crossings remaining on classified roads. Although the conditions for project approval (Section 2.4.1) include mitigation measures to decrease impacts, some sedimentation would occur in steams during road construction, road use, and road decommissioning. 3.1.2.7 Alternative 5, Modify Plan to Comply with Lease Stipulations Without Exception In Alternative 5, no roads, drill pads, or iVmWs would be constructed in locations where exceptions to ]ease stipulations would be required, specifically azeas over 60 percent slope, in high geologic hazazd azea, or within the WIZ. New toad construction would result in a 30 foot wide disturbance area. Construction of roads on locations where roads historically existed would result in IS feet disturbance width. Estimated surface disturbance for road construction in Alternative 5 would be 22.2 acres. Estimated surface disturbance for road decommissioning would be 54.5 acres. Estimated surface disturbance for construction and obliteration of 40 drill pads would be ZS acres. Although the conditions for project approval (Section 2.4.1) include mitigation measures to decrease impacts, this disturbance would result in soil movement, erosion, and reduction in productivity. ExvirommemtalA.verrmemt W.YP/AbndiGM[L//_ 1/OM 3/a/OSEI UIFf 3/f/0$d