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GENERAL33508
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Last modified
8/24/2016 7:55:27 PM
Creation date
11/23/2007 7:39:21 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1994082
IBM Index Class Name
General Documents
Doc Date
3/6/2001
Doc Name
PROPOSED DECISION & FINDINGS OF COMPLIANCE FOR RN1
Permit Index Doc Type
FINDINGS
Media Type
D
Archive
No
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Vegetation will be cleared and either disposed of in the active pit, or placed on reclaimed areas for <br />use by wildlife as cover. <br />Topsoil will be removed in advance of mining operations by scraper equipment, and will then be <br />stockpiled or redistributed when possible. Stockpiles will be temporarily stabilized with the <br />establishment of vegetation. <br />Overburden will be blasted and removed with a dragline, [hen spoiled into the previous pit. The <br />initial box cut spoil will be temporarily placed on an adjacent unmined area, and [he spoil <br />subsequently double handled for placement back in the pit once the next pit has been opened. <br />Coal is ripped or shot, removed by loader, and transported via Road A to the Hayden Station power <br />plant or to the Hayden Gulch Loadout facility. <br />No crushing, screening, or washing of coal is proposed. Since no coal processing is planned, the <br />operation will not produce coal mine waste. Non-coal waste will be disposed of offsite at an <br />approved dump site. <br />Spoiled overburden is graded by bulldozers to approximate original contour. Several drainages will <br />be reconstructed in the mined azeas. Topsoil is redistributed by scrapers to an average thickness of <br />1.8 feet. The approved reclamation seed mix will then be drill seeded in the fall. Lf topsoil <br />redistribution is completed in the spring a cover crop will be sown, Followed by the permanent mix <br />in the fall. Concentrated islands of seeded and transplanted shrubs will be established on <br />approximately five percent of the reclaimed area. <br />At the end of mining, all surface facilities will be removed, the azeas regraded, topsoil redistributed, <br />and revegetation accomplished as described above. <br />Impacts to surface water and ground water will be mitigated and monitored. Surface runoff from all <br />disturbed areas will be channeled to a sedimentation pond. Ponds 10, 11, and 12 have been <br />constructed to date. Disturbed area runoff from subsequent mining blocks will be routed to proposed <br />Ponds 13, and 14. <br />Surface water will be monitored upstream and downstream of [he site on Grassy Creek and Armand <br />Draw during the first permit term. Monitoring of Sage Creek was reinitiated two years prior to the <br />proposed mining in the Sage Creek basin. <br />Ground water will be monitored in the Trout Creek aquifer, in spoils aquifers, natural springs, and <br />in the alluvium of Sage Creek, Grassy Creek, .Armand Draw tributary, and Grassy Creek tributaries. <br />Monitoring of Sage Creek alluvium was reinitiated two years prior to proposed mining in the Sage <br />Creek basin. <br />Water usage at the mine consists of dust control on roads and in pit areas. Water used in dust control <br />will be obtained from Pond 002 at the Seneca II Mine. Seneca Coal Company has obtained rights <br />for all water usage at the operation. <br />You[ Mme 16 March 6.2001 <br />
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