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Mine Status and History <br />The Seneca II -W Mine is located approximately 7 miles south of Hayden, Colorado in Routt <br />County. The initial mining and reclamation permit for the mine was issued December 31, 1985, <br />for a 5 year permit term. The permit has been renewed for additional 5 year permit terms five <br />times, most recently in December 2010. <br />Coal extraction began at Seneca II -W in 1990, and continued through 2005. Coal extraction <br />ceased in early January 2006, due to a combination of difficult mining conditions and economic <br />factors. Reclamation operations are continuing. Seneca II -W was a dip -slope area strip mine <br />operation, which primarily utilized dragline mining methods, with limited auger mining in some <br />final pit locations. The total permitted area, including the Tie - Across Haul Road that connects <br />Routt County Road 53 with the Hayden Power Plant, is approximately 4,093 acres. The <br />maximum proposed disturbed area is 1,534.5 acres, including the mine area (1,334.5 acres of <br />mine pit areas, support facilities, haul roads and drainage control structures) and the Tie - Across <br />Haul Road corridor (200 acres). To date, only 1381.9 acres (including 96.6 acres associated with <br />the Tie - Across Haul Road) have been disturbed, and no additional disturbance is anticipated <br />during reclamation and maintenance operations. Surface ownership is predominantly private, with <br />right of entry based on a variety of private leases, subleases and easements. The permit area also <br />includes limited areas of federal surface managed by BLM, and state lands managed by the State <br />of Colorado. Coal mined at Seneca II -W was owned by private interest and the Federal <br />government, under lease to Seneca Coal Company. <br />Over the mine life, Seneca Coal Company produced in excess of 12 million tons of coal at Seneca <br />II -W. Annual production ranged from a low of 376,700 tons to a maximum of 990,300 tons. No <br />further coal production is proposed. Reclamation of pit areas was completed in 2007; narrowing <br />of permanent roads was completed in August 2011, and facilities areas were regraded in <br />September 2011. Temporary sediment control structures will be removed upon demonstration that <br />reclaimed areas have been adequately stabilized by vegetation, unless approved as permanent <br />impoundments for the postmining land use. <br />Stipulation and Revision Summary <br />With the exception of Stipulation 32, all stipulations on previous permitting action approvals have <br />been resolved. Stipulation 32 was attached to the TR -42 proposed decision, issued October 14, <br />2003. This stipulation remains in effect. <br />STIPULATION 32 <br />FOR PERMANENT ROAD RETENTION ON RECLAIMED LANDS, THE PERMITTEE <br />WILL SUBMIT, WITHIN A COMPLETE REVISION APPLICATION, <br />DEMONSTRATION OF COMPLIANCE WITH 4.03.1(1)(F) OR 4.03.2(1)(G) AS <br />APPLICABLE. THE DEMONSTRATION WILL INCLUDE COPIES OF SIGNED <br />LANDOWNER REQUESTS FOR ROAD RETENTION FROM EACH AFFECTED <br />Seneca II -W Findings Document 4 C- 1982 -057 <br />Permit Revision No. 6 January 6, 2012 <br />