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GENERAL49556
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Last modified
8/24/2016 8:28:49 PM
Creation date
11/23/2007 5:11:53 PM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1980004
IBM Index Class Name
General Documents
Doc Date
1/29/1992
Doc Name
PROPOSED DECISION AND FINDINGS OF COMPLIANCE FOR PR1 and RN3
Permit Index Doc Type
FINDINGS
Media Type
D
Archive
No
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The climate in the region is semi-arid. Prevailing winds at or near ground <br />level at the mine are dictated by the orientation of the deeply incised <br />McClane Canyon. The annual average precipitation recorded at Fruita (22 miles <br />southwest of McClane Canyon) is 8,8 inches. <br />The soils in the permit area are well to excessively drained and have formed <br />in alluvial or colluvial sediments. Sails are deepest in the valley bottoms <br />and become shallower along the canyon sideslopes where they intersperse with <br />bare rock. Most of the soils are rated good to fair as sources of topsoil for <br />reclamation. Limitations exist for subsoils in the alluvium which demonstrate <br />strongly alkaline pH values. <br />The mine occurs within the lower montane climax region. Three vegetation <br />types occur within and adjacent to the permit area. A greasewood shrubland <br />type occupies the flat terrain along the East Salt Creek drainage where soils <br />are deep, well drained and often very sodic and moderately saline. Shadscale <br />shrubland borders the greasewood shrubland along the dry, steep, south facing <br />slopes in the shallower sails which are interspersed with rock outcrops. <br />Juniper woodland is found along the ridge tops and steep north and west facing <br />slopes of shallow soils and rock outcrops. These vegetation types are common <br />to western Colorado and Utah, <br />DESCRIPTION OF THE OPERATIONS AND RECLAMATION PLAN <br />The McClane Canyon Mine is an underground coal mining operation. The proposed <br />mine permit area encompasses 2,312 acres, of which 2,122 acres wilt be <br />affected by mining, and 9.5 acres will undergo surface disturbance. The <br />existing surface facilities include a bench portal and faceup area, upon which <br />are located a crusher and gantry, water and fuel tanks, support trailers, a <br />shop, a transformer and substation, ventilation fan, and rock dust bin. Other <br />surface disturbances include an access road, topsoil and rip-rap stockpiles, a <br />parking area, office and bath house, water tanks, and a sedimentation pond. <br />Disturbed areas include ditches and culverts for sediment control. Future <br />disturbance proposed for this operation includes a haul road to be constructed <br />in conjunction with the haul road on the adjacent Munger Canyon Mine permit <br />area. <br />Coal is mined underground using room and pillar techniques. Prior to 1991, <br />526,666 tons of coal were produced at the McClane Canyon Mine. Anticipated <br />production for this permit term is approximately 1.25 million tons of coal. <br />Coal is mined at the exposed face by a continuous miner. The mined coal is <br />then shuttled to a conveyor which transports the coal to the surface. The <br />coal is then crushed, stockpiled, and loaded into highway trucks for <br />delivery. The coal is trucked directly to the customer, <br />When mining ceases at the McClane Canyon 14ine, the portals will be sealed and <br />backfilled. Thy sediment ponds, haul road sections, and portions of the <br />bench area will be graded to approximate original contour, and drainages <br />reestablished. Regraded areas will be topsoiled, seeded, and mulched to <br />establish vegetative cover of a variety consistent with surrounding naturally <br />occurring vegetation. <br />-5- <br />
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