2021-05-28_GENERAL DOCUMENTS - C1981019

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operations, the South Taylor Pit will be nearly 4,000 feet wide, 6,000 feet long, and 550 feet deep. Pit progression is from east to west. Projected life of the South Taylor Pit is estimated to be until 2021 as per the currently approved Map 23A of the PAP, not including potential highwall mining, which could prolong this schedule. Reclamation in the South Taylor Pit is expected to conclude in 2029. In 2017, construction began for the Collom Pit expansion approved with PR-04. Current activities are limited to activities outlined in Exhibit 13C —Collom Cumulative Bond Schedule of the PAP. Permit, Performance Bond, and Bond Release History The permanent program mining permit was issued on November 4, 1982. Seven successive permit renewals have been approved subsequent to the initial permanent program permit approval; the most recent, Permit Renewal No. 7,was issued August 14, 2018, for a permit term that will expire November 5, 2022. The Division currently holds a reclamation bond, in the form of a corporate surety, in the amount of$130,000,000.00. Colowyo has applied for seventeen previous bond releases: Previous Bond Release Summary Bond Release Phase Submittal Approval Date Date SL-01 I and II 7/2/1987 10/8/1987 SL-02 I 9/25/1997 4/27/1998 SL-03 II 9/26/2000 8/15/2001 SL-04 I and II 6/1/2001 7/25/2001 SL-05 III 6/28/2010 7/25/2012 SL-06 I 4/26/2012 4/9/2013 SL-07 I 4/2/2013 8/29/2013 SL-08 I 5/20/2015 1/7/2016 SL-09 I 2/29/2016 9/28/2016 SL-10 III 7/18/2016 1/12/2017 SL-11 I 3/10/2017 11/13/2017 SL-12 II and III 3/10/2017 12/7/2017 SL-13 I 4/12/2018 8/30/18 SL-14 II and III 5/24/18 11/24/18 SL-15 I, II, and III 2/8/19 9/10/19 SL-16 I, II, and III 6/26/19 11/26/19 SL-17 I, II, and III 9/26/19 1/25/20 SL-18 I 3/20/20 8/22/20 Proposed Decision and Findings of Compliance May 28,2021 Partial Phase I Bond Release SL-20 Page 3