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are mined. The seams are the A, B, C, D, E, F and G seams and their seam complexes (for <br /> example, the G-Seam is separated into G7, G8 and G9 in the South Taylor Area). At the peak of <br /> operations, the South Taylor Pit will be nearly 4,000 feet wide, 6,000 feet long, and 550 feet <br /> deep. Pit progression is from east to west. Mining within the South Taylor Pit concluded in <br /> 2023 including highwall mining operations. Reclamation in the South Taylor Pit is expected to <br /> conclude in 2031 as shown on Map 29 of the Colowyo PAP. <br /> In 2017, construction began for the Collom Pit expansion approved with PR-04. Accessible <br /> seams at the Collom Pit include the Y, X, A, B, C, E, F, and G. It is estimated that coal <br /> production from the Collom Pit will range from 1.2 to about 2.4 million tons per year based pit <br /> progression and market needs. Mining methods at the Collom Pit will include a combination of <br /> dragline, truck/shovel and highwall mining operations. Current activities are limited to activities <br /> outlined in 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 <br /> permit renewals have been approved subsequent to the initial permanent program permit <br /> approval; the most recent, Permit Renewal No. 8, was issued February 25, 2023, for a permit <br /> term that will expire November 5, 2027. The Division currently holds a reclamation bond, in the <br /> form of a corporate surety, in the amount of$130,000,000.00. Colowyo has applied for twenty <br /> one previous bond releases: <br /> Previous Bond Release Summary <br /> Bond Release Phase Submittal Approval Date <br /> Date <br /> SL-01 I and II 7/2/1987 10/8/1987 <br /> SL-02 I 9/25/1997 4/27/1998 <br /> SL-03 11 9/26/2000 8/15/2001 <br /> SL-04 I and II 6/1/2001 7/25/2001 <br /> SL-05 111 6/28/2010 7/25/2012 <br /> SL-06 I 4/26/2012 4/9/2013 <br /> SL-07 I 4/2/2013 8/29/2013 <br /> SL-08 1 5/20/2015 1/7/2016 <br /> SL-09 I 2/29/2016 9/28/2016 <br /> S L-10 111 7/18/2016 1/12/2017 <br /> SL-11 I 3/10/2017 11/13/2017 <br /> SL-12 II and III 3/10/2017 12/7/2017 <br /> SL-13 I 4/12/2018 8/30/18 <br /> SL-14 II and III 5/24/18 11/24/18 <br /> SL-15 I, II, and III 2/8/19 9/10/19 <br /> SL-16 I, II, and III 6/26/19 11/26/19 <br /> Proposed Decision and Findings of Compliance November 3,2023 <br /> Partial Phase 11 Bond Release SL-22 Page 3 <br />