2008-03-03_REVISION - C1981018 (3)

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Minor Revision #133 Modifications to Permit The following changes are requested for Permit #C-1981-18: I i 1. Relocate degas borehole LW138-2. (No change in liability) See Map 147. 1 2. Add SC-xxxx holes related to recent fire event. These holes are for monitoring mine air and to allow the injection of nitrogen or carbon dioxide to control spontaneous combustion events. Add 19 holes, 18 drill pads (9.9 acres), 11,900 feet of roads (3.8 acres). See attachedtable for completed hole diameters. Locations are shown on Map 147. Text was modified on page III-27. Table V-3 on page V-24 modified to show additional disturbance acres. 3. Add above ground nitrogen pipeline to help prevent rekindling of fire event (minimal surface disturbance). i Add 6900' of 3" rolled plastic pipe. Alignment shown on Map 147. Text was modified on page III-27. i 4. Add nitrogen generating unit with compressors (skid mounted) to RDH-3 pad. No increase liability. All equipment mobile skid mounted. This addition is shown on Map 155 and discussed on page III-27. 5. Add blowers for breathable air to RDH-2 and RDH-3 pads and generator at RDH-2 pad. This addition is discussed in Section III.F on page III-35 and shown on Maps 154 and 155. Add concrete pads (4"thick) and enclosure buildings. i 6. Remove Coherex tank and containment structure from RDH-2. Remove structures - never constructed. Structure removed from Map 154. 7. Increase pad area for; B-Vent Shaft, SH-1 and SH-2 by a total of 0.45 acres. Changes shown on Map 155. Table V-3 on page V-24 modified to show acreage change. 8. Increase concrete pad'size for hoist at B-Vent Shaft #2. Changes shown on Map 155. 9. Remove steel surface riser and add escape hoist head frame to B-Vent Shaft #2. Changes shown on Map 155. i 10. Realignment of power to B-Vent Shaft #2, SH-1, SH-2, and RDH-3. Reduce footage of power lines from 3000 feet down to 2250 feet. Changes shown on Map 155 and discussed on page III-34. i