2008-05-05_PERMIT FILE - M2008027 (2)

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110 Permit Application Colorado Division of Ret;lamation, Mining and (B) Rule: identify any permanent man-made structures within 200 feet of the affected area and the owner of each structure. Each structure should be located on Exhibit E - Map. Response: There are no permanent man-made structures within 200 feet of the affected area with the exception of the private Tepee Park Ranch road that runs through the eastern portion of the proposed permit area (Exhibit E). (C) Rule: a description of the water resources in the area of the proposed operation. Identify any streams, springs, lakes, stock water ponds, ditches, reservoirs, and aquifers that would receive drainage directly from the affected area. Provide any information available from publications or monitoring data on flow rates, water table elevations and water quality conditions. Response: Groundwater underlying the affected area is anticipated to be at least 100 feet below ground surface, based on topography relative to Beaver Creek and the underlying Wasatch Formation, which is the closest underlying formation utilized for aquifer characteristics in other areas. The pit is not expected to intersect any significant continuous groundwater resource. Infiltration of storm water in the affected area will be impeded by fine grained lithologic units of the Green River Formation underlying the pit. Storm water that does infiltrate would be expected to intersect shallow sandstone units and then flow laterally until it daylights near the pit or becomes entrained in perched discontinuous water bearing units in the hillside. Lithologic unit bedding orientation at the site is relatively flat. Surface water or drainages potentially receiving drainage from the affected area include two unnamed ephemeral creeks. The surface water flow path from the affected area to each of the ephemeral creeks ranges between 600 and 1,000 feet in length, respectively. The ephemeral creek drainages intersect Beaver Creek approximately 1,000 to 2,000 feet below the surface water flow path - ephemeral creek intersect. Beaver Creek is a perennial stream that supports a cold water fishery. Mean daily flows range from 0.9 to 8.24 cubic feet per second (cfs), with an average of 4.8 cfs for the period between 1972 and 1982 (USGS 2008). The gauging station for these measurements is located several miles north of the affected area at an elevation of 6,685 feet. Presumably in-stream flows are greater at the gauge location than near the proposed permit area. No water quality data was available for Beaver Creek. However, the Colorado River, a downstream receiving river, is a listed 303d water body for selenium. (D) Rule: A wildlife statement prepared by the Colorado Division of Wildlife (DOW) is not required for 111 Special Operations, or 110, or 110(6) Limited Impact Operations. The Operator/Applicant may contact the local Colorado Division of Wildlife (DOW) representative to verify that no critical or important wildlife habitats or wildlife species will be impacted by the proposed operation. Response: No action required. Tetra Tech February 2008