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2007-11-01_PERMIT FILE - C1982056A (8)
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2007-11-01_PERMIT FILE - C1982056A (8)
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Last modified
8/24/2016 3:18:17 PM
Creation date
3/3/2008 2:09:07 PM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1982056A
IBM Index Class Name
Permit File
Doc Date
11/1/2007
Section_Exhibit Name
2.05.5 Postmining Land Uses
Media Type
D
Archive
Yes
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Ground Water Quantity Protection <br />. No registered wells aze completed in the Trout Creek Sandstone in the cenva] part of the Twentymile Park Basin <br />except those owned by TCC. There are also no registered wells completed in the Twentytnile Sandstone in this part <br />of the Basin. Grotmdwater rights in the permit area and vicinity are shown in Table 9. <br />In the unlikely event that undergound mining activities cause adverse quantitative injury to another water user, <br />TCC or a subsidiary would utilize their Bound water rights within the general azea to mitigate any such injury. <br />Know uses of Bound water are identified and discussed under Rule 2.04,7(1)(a)(iii) starting on page 2.04-33. <br />(ivl The quality of surface and ground water affected by anv underground mines by <br />locating mine openings in accordance with 4.05.10. <br />The rrrine portals are designed such chat no gavity discharge of water from the mine occws. Water from the <br />disturbed portal wedge area or rock slopes is routed to Pond E, or alternatively, it may be piped to Site 114. No <br />water will be discharged by gravity from the Fish Creek Borehole/Shaft. <br />(bl The description shall include: <br />(il A plan for control, in acwrdance with Rule 4, of surface around water drainage <br />into. through and out of thepronosed permit azea and adjacent azea: <br />Drainase Control and Treatment Plan <br />Previous operations plans for the Foidel Creek Mine created certain changes in the original sediment-control plan <br />implemented under the previously approved Permit No. 79-177. The most significant changes were a result of the <br />variance from contemporaneous reclamation requirements to allow a portion of the Area 1 surface mine pit to <br />remain open and to serve as a disposal site for waste rock material from the underground mine. <br />Exhibit 31, Spoil Analysis, contains recommendations for drainage conuol near the portal area. As stated, the crest <br />of the highwall is a topographic drainage divide, and swface drainage north of the crest drains away from the <br />highwall (into Ponds, D, E, F, and G, as shown on Map 24, Surface Facilities). This plan provides for drainage of <br />the area south of the surface facilities utilizing two diversion ditches. Ditch D~ is located at the tce of the spoils <br />slope, and Ditch D-3 at the crest of the spoil slope, as shown on Map 24, Surface Facilities, and specified in Exhibit <br />8, Sediment Control Plan. Ditch D-3 is designed for the 100-year, 24-how precipitation event to provide a measure <br />of safety and stability to the spoil slopes. All other drainage conuol measwes are designed for the 10-year, 24-hour <br />event. The plan calls for the Area 1 Pit water to be allowed to overflow into Pond D, with discharge to Foidel <br />Creek, as shown on Map 24, Surface Facilities. Thus, all water from disturbed ]ands pass through sedimentation <br />ponds before being released to Foidel Creek, except for Small Area Exemptions. <br />TCC has assumed the operational and reclamation liability for ponds/veatment facility B, C, D, E, F, G, and T since <br />the completion of mining at Colorado Yampa Coal Company. Pond B, which is a Vestment facility, receives wash- <br />down water and surface runoff from the tipple and Belt-Out-Back stockpile. Pond C controls runoff from the old <br />loadout stockpile and its associated pad. Pond D receives surface runoff, spoils dischazge from the Area 1 Pit, and <br />mine water. Pond E receives runoff from the surface facilities, including surface water from the Wadge Sump. <br />Pond F receives runoff from the surface facilities, upland reclaimed azea, and spoil water. Pond G r~eives runoff <br />from the surface facilities and upland reclaimed areas. Design details for these ponds are presented in Exhibit 8. <br />Additionally, TCC utilizes diversion ditches to route the 100-year flow event around the refuse pile. The design of <br />the refuse pile diversion ditches is presented in Exhibit 26A, Appendix D. These diversions take upland flow and <br />jai.^, .i+~-~aiv~: 3L r~t°.am t.- ~s,•.3ti :.°.~~; YrtiL .is.st;e~•ytan^~ N:i:~::hPL1Dst~: egaila+.Lnss <br />'rR06-52 2.05-130 02/] 7106 <br />
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