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Water Information There is no source of surface or ground water within the area of mining activity so the operation will not affect either surface or ground water. Normal precipitation in the area produces minimal surface runoff. Storm water is mainly absorbed by dry soils and geologic fractures. Ephemeral runoff does occur during raze major storms. Sedimentation control dams constructed within project azea drainage channels will mitigate effects of any storm water flow. Typical construction detail for the dams shows the use of riprap for erosion control. Depending on the expense and availability of riprap when actual construction begins, commercially erosion mats will possibly be utilized as a suitable substitute. If required, appropriate technical revisions with DMG will be obtained for this substitution. The dams will be constructed in drainage channels below the access haul road to the amended area and the mining/ reclamation sloping areas. During the course of DMG permit review, it was seen necessary to design the control structures as Erosion Control Dams and in accordance with standards set forth by the Colorado State Engineer. This design provision was incorporated in order to accommodate a 100-year storm event with the control structures. Construction permit formatting -will be finalized with the State Engineer prior to actual construction. Locations for the structures are shown on Exhibit C-2 and typical construction details are shown on Exhibit C-7. Each pond system has been analyzed for 100-year/24- hour and 10-yeaz/24-hour storm events. The SedCad models used to analyze these events are attached for review of the appropriate referral parties. Culverts, sedimentation pond spillways, and road interior ditches are designed for 100-year/24-hour storm events. The 100-year/24-hour precipitation of 2.8 inches is used to estimate storm runoff. The value was estimated using the NOAH Atlas2 for Colorado. Water required for dust suppression on haul roads will be acquired from the wallboard plant water supply system as is in the current mining operation procedure. Wildlife Information Permit reviews conducted by BLM, DMG and the Colorado Division of Wildlife (CDOW) resulted in the conclusion that the amended project area would have little or no effect on wildlife or wildlife habitat. Content of Environmental Assessment CO-140- 2001-064 EA concerning wildlife is quoted below. Wildlife in the project area is typical of that found fn Pinion/juniper woodland community of the Colorado Plateau. The Colorado Division of Wildlife (CDOW) ]1