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with additional disturbances of approximately 40 to 50 acres per year. Extraction of coal from the <br /> East Pit was terminated in 2006. All reclamation activities have been completed in the East Pit and <br /> is in the required final revegetation stages. <br /> The West Pit is located to the west of the East Pit. The method of operation utilized in, and the coal <br /> seams extracted from, the West Pit were the same as those of the East Pit. The West Pit was roughly <br /> the same overall size as the East Pit. Mining in the West Pit advanced from the north to south, <br /> paralleling the movement of the adjacent East Pit. Mining operations in the West Pit were <br /> completed in 2015. Reclamation activities remaining in the West Pit include backfilling, grading, <br /> reduction of the highwall, and vegetation. <br /> Colowyo is continuing to perform reclamation maintenance and activities in the East Pit and West <br /> Pit. Reclamation in the East Pit and West Pit is expected to conclude in 2032 with associated <br /> parcels related to the remaining in-pit haul road. <br /> Operations in the South Taylor Pit began after the approval of PR-02 in 2007. This pit is located <br /> north and west of the northward flowing Good Spring Creek and southwest of the West Pit. It lies <br /> partially in Rio Blanco County. In the South Taylor Pit, 17 seam and sub-seam complexes are <br /> mined. The seams are the A, B, C, D, E, F and G seams and their seam complexes (for example, <br /> the G-Seam is separated into G7, G8 and G9 in the South Taylor Area). At the peak of operations, <br /> the South Taylor Pit will be nearly 4,000 feet wide, 6,000 feet long, and 550 feet deep. Pit <br /> progression is from east to west. Mining within the South Taylor Pit concluded in 2023 including <br /> highwall mining operations. Reclamation in the South Taylor Pit is expected to conclude in 2031 <br /> as shown on Map 29 of the Colowyo PAP. <br /> In 2017, construction began for the Collom Pit expansion approved with PR-04. Accessible seams <br /> at the Collom Pit include the Y, X,A, B, C, E, F, and G. It is estimated that coal production from <br /> the Collom Pit will range from 1.2 to about 2.4 million tons per year based on pit progression and <br /> market needs. Mining methods at the Collom Pit will include a combination of dragline, <br /> truck/shovel and highwall mining operations. Current activities are limited to activities outlined in <br /> Exhibit 13C - Collom Cumulative Bond Schedule of the Colowyo PAP. <br /> Permit,Performance Bond,and Bond Release History <br /> The permanent program mining permit was issued on November 4, 1982. Eight successive permit <br /> renewals have been approved subsequent to the initial permanent program permit approval; the <br /> most recent, Permit Renewal No. 8, was issued February 25, 2023, for a permit term that will <br /> expire November 5,2027. The Division currently holds a reclamation bond, in the form of a <br /> corporate surety, in the amount of$119,000,000.00. Colowyo has applied for twenty-three <br /> previous bond releases: <br /> Proposed Decision and Findings of Compliance <br /> Partial Phase I Bond Release SL-24 Page 4 of 14 <br />