2014-04-16_GENERAL DOCUMENTS - C1984065

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Coal Ridge No. 1 Mine C1984065: MT7 Section I - Mine History and the Environment April 14, 2014 The Coal Ridge No. 1 Mine is in permanent cessation. No coal production is planned for the current permit term. Proposed activities include reclamation, maintenance, and monitoring activities. The mine is located on private lands within Garfield County. The legal description of the lands included within the permit area is: Those lands in the NE % yet south of County Road 335, Lots 3 and 4, S %, S % NW %, Section 1, and the N % NE % Section 12, Township 6 South Range 91 West 6th Principal Meridian; and the S % SW Section 5, all lands south of County Road 335 Section 6, NE %, N % NW % Section 7, N %, N % SE %, NE SW % Section 8, S % NW %, SW % Section 9, NW % Section 15, and N1/2 NE %, NE % NW Y4 Section 16 Township 6 South Range 90 West 6th Principal Meridian, Garfield County, Colorado. These areas of the permit are covered by USGS 7.5- minute topographic maps Storm King Mountain and New Castle quadrangles. The permit area is located to the south of the Colorado River, approximately 7 miles west of Glenwood Springs, Colorado; and on the south side of County Road 335, approximately 1.5 mile east of the 1 -70 105 New Castle, Colorado interchange. The reclaimed disturbed areas (the mine portal and facilities area) are located at the base of a steep escarpment of the Grand Hogback. Description of the Environment The surface facilities of the mine were located on north - sloping fan terraces at the foot of the Grand Hogback. The lower terraces of the site, at elevation approximately 5,800 feet, are approximately 150 feet above the Colorado River, and are used as cropland (grass and alfalfa) and for grazing. The base of the steep slopes is used for grazing (sagebrush areas). Geology Rock strata dip ranges from 30 to 70 degrees to the west - southwest. Minor folds trending north - south to northwest - southeast occur throughout the region. However, there is little evidence of faulting along the Grand Hogback. The exposed rock sequence in the permit area is Jurassic through Tertiary in age and includes (proceeding from the base to the top, oldest to youngest) the Morrison Formation, Dakota Sandstone, Mancos Shale, the coal- bearing Mesaverde Group, and the Wasatch and Ohio Creek formations. The stratigraphy of the Mesaverde Group includes interbedded and lenticular sandstones, shale, siltstone, and coal beds. In ascending order (oldest to youngest), the Group contains (1) the Corcoran Sandstone, a marine shale sequence, and the Rollins Sandstone; (2) the Bowie (coal- bearing) member; (3) the Paonia (coal- bearing) member; and (4) the Upper (non -coal bearing) member. The Page 3 of 28