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<br />Alternatives to the proposed action are no action/disapproval and extend <br />life of mire through issuance of a new Federal lease. <br />Description of the affected environment: <br />This mine has teen in operation since 1922. The company has ne plans to <br />increase the area of surface disturbance. <br />The Ohio Creek Mine is located at the <br />Piceance Creek Basin. The coal teing <br />N,esa Verde Formation. The coal is mi <br />Member" of the Mesa Verde formation. <br />northwest and is•4.5 tc 8 feet thick. <br />ash (.4$), moderate BTU (11,000), and <br />very southwest extremity of the <br />mired is from the Upper Cretaceous <br />red from the B seam in the "Paonia <br />The seam dips 2 to 4 degrees to the <br />The coal is low sulfur (.6$), low <br />is classified as hig}i volatile <br />` bituminous C considered excellent steam and domestic coal. <br />Surface water control structures: All surface water emitting from the <br />existing and proposed disturbed area (life-of-the-mine estimate 3.22 <br />acres) and the estimated total drainage area around and including the <br />mine is 8.4 acres. This potential drainage is routed by two diversion <br />ditches to a one acre-f.oot sediment pond. T}~e pond was designed to <br />contain the 10-year, 24-hour storm event and possesses an emergency <br />spillway that would pass 2. 25-year, 24-hour storm while maintaining a and <br />foot free toard. In the event of a discharge from the sediment pond, <br />water would flow doti+n a vegetated Swale into Ohio Creek located some two <br />miles away. kater flcwing down this Swale should cause little erosion <br />since the swale is densely vegetated and lacking an established stream <br />channel. Also water will readily infiltrate into the moderately <br />I <br /> <br />