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Descriation of the Environment Location of Permit Area. The Eagle Mines are located in Moffat County, Colorado on lands within: Township 6 North. Ranee 91 West Portions of 5%z Section 17; W%z SW% Section 21, W%z W%z Section 28, W%z Section 33, E%z Section 19, E%z Section 30; Sections 20, 29, 31, 32, ALL. Townshia 5 North. Ranee 91 West Portions of W %z Section 4; N''/z Section 8, N''/z Section 6, Portions of S''/z Section 6; Section 5, ALL. Township 6 North. Ranee 92 West Portions of S'/z Section 25; S%z SEY< Section 26, W%z Section 35; Section 36, ALL. Township 5 North, Rance 92 West: E''/z NE'/4 Section 1. Regional Climate. The climate of the region is classified as highland continental, and is chazacterized by low precipitation, large fluctuations in diurnal temperatures, low humidity, moderate wind, and high levels of insolation (exposure to sunlight). The Craig area is in the rain snow shadow of mountain ranges to the west and south and consequently has a high number of dry, clear days. Local Climate. The climate of the Craig, Colorado azea is chazacteristic of semi-arid steppe regions. The average annual precipitation for the town of Craig, 6 miles northeast of the Eagle Mines, is 13.5 inches of which over one-third is snowfall (averaging 66.5 inches/year). Average annual precipitation at the Trapper Mine, next to the Eagle Mine Complex, is 16.7 inches. The mean annual temperature in Craig is 43~F, with recorded extremes of -45~F and +100 F. Winds are predominantly from the west, but are locally modified by topographic features. The growing season for the area azound Craig averages 77 days. Physiographic Setting. The No. 5 and No. SA portals of the Eagle Mine Complex are driven into the steep-sided walls of the valley that the Williams Fork River has cut through at the west end of the Williams Fork Mountains. The mines' facilities azea is in the bottom of the valley.