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2.04.7(3) <br />(3) Alternative Water Supply Information. <br />• Historically, the mine has had no measureable effect on the <br />surface or underground water resources within the permit <br />area. Future operations will be essentially the same as <br />past, therefore no contamination, diminution or interruption <br />of the water resources will occur. ..^.efer to Sections 2.04.7(1) and 2.04.7(2); <br />and the tables showing monitoring of flews. <br />Section 2.04.8 Climatological Information <br />(1)(a) Aiean monthly precipitation. <br />The mine study area generally receives 16 inches of precipitation <br />between October and April. The May - September precipitation is <br />generally 8 inches. These two precipitation patterns result in <br />a normal annual precipitation of 25 inches near Somerset. <br />Percipitation data are available from the Wilcox Ranch Station <br />• (Iat. 38° 55' N and Long. 107° 31' [•7), the climatic data station closest to the <br />Mt. Gunnison No. 1 Mine Study area. This station is east of <br />Bowie on the north side of the North Fork of the Gunnison River <br />in the Hubbard Creek Drainage. Figure 2.04.8(1)(a)-1 presents the mean <br />monthly precipitation and annual mean precipitation data for 12 <br />to 13 years prior to 1954. <br />An average cf 18.45 inches of precipitation was received at the <br />Wilcox Ranch (Figure 2.04.8(1)(a)-1). Greatest average precipitation <br />is recorded in April (2.08 inches) and the least in September <br />(0.85 inches). The maximum monthly precipitation fell during <br />April (4.52 inches), with June (4.15 inches) and January <br />(4.02 inches) recording similar maxima. Sven October (3.90 <br />inches) and August (3.82 inches) have recorded substantial <br />amounts of precipitation. ??ovember has a lower maximum recorded <br />precipitation than any other month. <br />r1 <br />U <br />The [•:ilcox :ranch figure of 18.45 incfies of. precipitation will. '~e ttsea for <br />f+.irther ~zlculations as it is the :cost cromplete record. <br />PrVISFD ;'av 15, 1981 5-61 <br />