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PUBLIC NOTICE
<br />Twentymile Coal, LLC (TC), 29515 Routt County Road 27, Oak Creek, Colorado 80467, has
<br />submitted an application for a Technical Revisions (TR) to the Foidel Creek Mine, Permit Number C-
<br />82-056. The revision (TR16-84) addresses a modification to the existing approved mining and
<br />reclamation plans to include a passive water treatment system to treat mine water in order to meet
<br />applicable water quality effluent limitations. The proposed treatment system will utilize a series of
<br />four treatment cells with both open -water ponded areas and constructed wetlands to reduce iron,
<br />sulfates, and dissolved solids in the mine water prior to discharge to Fish Creek. The combination of
<br />open -water (aerobic) and wetland (anerobic) will maximize naturally -occurring physical, chemical,
<br />and biological treatment mechanism and processes.
<br />The mine permit area encompasses approximately 22,607 acres, located approximately 23 miles
<br />southwest of Steamboat Springs on Routt County Road 33, and approximately 7.3 miles northwest of
<br />Oak Creek on Routt County Road 27. Mine offices and major surface facilities are located adjacent to
<br />Foidel Creek, near the intersection of these two roads. The mine permit area is covered by the Cow
<br />Creek, Dunkley, Milner, Mount Harris, Oak Creek, and Rattlesnake Butte USGS 7.5 minute
<br />quadrangle maps. The lands affected by the proposed revision are located in Section 17, T5N, R86W;
<br />and surface owners for this area include the State of Colorado, and Sage Creek Land and Reserves,
<br />LLC (an affiliate of TC). The Mine Permit Area includes all or portions of Sections 7 through 9, T4N,
<br />R86W; T5N, R86W, except Sections 34 through 36; and Sections 13, 22 through 24, 25 through 27,
<br />and 34 through 36, T5N, R87W. The ownership, precise location, and boundaries of lands within the
<br />Permit are identified on pages 2.03-13 through 2.08-18.3 and 2.03-22 and 2.03-33.5, and Maps 1 and
<br />2, of the Mine Permit Application Package (PAP), and are included in this public notice by reference.
<br />Copies of the PAP, including the referenced Technical Revision application, (less confidential
<br />material) are available for inspection at the mine office and the office of the Colorado Division of
<br />Reclamation, Mining, and Safety. Copies of the Technical Revision applications are also available for
<br />public inspection at the:
<br />Office of Clerk and Recorder
<br />Routt County
<br />552 Lincoln Avenue
<br />P.O. Box 773598
<br />Steamboat Springs, Colorado 80477
<br />Written comments or objections to the Technical Revision application should be submitted to the State
<br />of Colorado, Division of Reclamation, Mining, and Safety (CDRMS), 1313 Sherman Street, Room
<br />215, Denver, Colorado 80203-2273 within ten days of the date of publication of this notice.
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