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GENERAL37970
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Last modified
8/24/2016 7:57:54 PM
Creation date
11/23/2007 9:25:00 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1981047
IBM Index Class Name
General Documents
Doc Date
12/9/1982
Doc Name
PROPOSED DECISION AND FINDINGS OF COMPLIANCE
Permit Index Doc Type
FINDINGS
Media Type
D
Archive
No
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-6- <br />At Paonia, the climate is semi-arid with annual precipitation averaging about <br />15 inches per year. Mean annual precipitation increases with elevation, reaching <br />over 40 inches per year near the summit of Crater Peak. The May-September pre- <br />cipitation is 5 inches for the lowlan~s and I3 inches for the mountain peaks. <br />This indicates that snowfall patterns play an important part in determining the <br />hydrology of the area. Temperature extremes at Paonia have ranged from -28°F <br />in January to 100°F during July and August. The average annual temperature is <br />approximately 49oF. Snowfall averages 58 inches per year. <br />The general area in which the Blue Ribbon Mine is Located is characterized by <br />steeply sloping mountains covered either with tall shrub vegetation, particularly <br />oakbrush and serviceberry, or stands of pinyon and juniper trees. Drainages in <br />the area are Lined with riparian vegetation communities along the stream banks. <br />Some of the more level areas have been cleared and support limited livestock <br />grazing. However, for the most part, the surrounding land is undeveloped and is <br />used primarily as wildlife habitat. Recreational activities such as big game <br />hunting, trapping, fishing, and off-road driving also occur in the general area. <br />Description of the Operations and Reclamation Plan <br />The general direction of mining will be northward and eastward to extract coal from <br />the "E" or Hawk's Nest Seam of the Upper Coal member of the Mesaverde Formation. <br />This seam is the uppermost of five commercial coal seams in the Iease area and <br />averages six feet in thickness. The total anticipated Life of the Blue Ribbon Mine <br />is 5.5 years, with the expected termination date being the second quarter of <br />1987. The current annual production rate is aoproximately 192,000 tons per <br />year. The Blue Ribbon P1ine is a drift mine which is mining down the dip of the <br />coal. Mining will be carried out using room and pillar methods with continuous <br />mining equipment. The coal is removed from the mine via a conveyor system to <br />the surface, where it is screened and loaded onto trucks for shipment to market. <br />The coal is weighed at a truck scale facility located along State Highway No. <br />I33, approximately 2 miles west of Hubbard Creek. For further discussion of the <br />operations plan, see Section XIV, "Operations Description", page 53 of this docu- <br />ment, and Section 205.2, page 98 of the permit application. <br />Permanent reclamation of the mine surface facilities site and truck scale facility <br />will commence immediately upon termination of mining activities. All surface <br />facilities wiZZ be removed, and the mine portals and ventilation shafts will be <br />sealed according to P1SHA requirements. Reclamation of the portal bench area, which <br />has been determined to be a steep slope mining situation, will commence by moving <br />the bench material upslope and against the highwall. The highwall will be eliminated <br />and the backfilled surface will be contoured to a stable configuration with a <br />demonstrated safety factor equal to or greater than 1.3. The same back filling scheme <br />will be carried out for the mine haul road as well. The backfilled areas will then <br />be smooth graded, and compacted areas will be ripped or scarified to eliminate <br />slippage surfaces, establishing a suitable bond for overlying seedbed material. <br />Topsoil was not completely salvaged from all disturbed areas. Much of the mine <br />site was disturbed prior to any such statutory or regulatory requirement, and, <br />therefore, no obligation existed to salvage topsoil. However, soil surveys con- <br />ducted by the operator have indicated that the existing disturbed soils are suit- <br />able as a plant growth medium. This material will be stripped prior to the <br /> <br />
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