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SECTION II - Summary of Operations, Revisions to Permit, Violations, Stipulations, <br />Variances, and Bond <br />Operations <br />Table 2 summarizes the history of Permit C-1981-010, prior to the most recent renewal, RN- <br />07_ <br />Table 2 — Summary of history of Permit C-1981-010 <br />Date <br />Action <br />1954 - 1958 <br />State, county, and federal coal leases issued for the future Trapper Mine <br />site <br />1972 <br />Utah International, original operator of Trapper Mine, begins <br />environmental studies of the site <br />1976 <br />Colorado Mined Land Reclamation Division issues mining permit C-76- <br />11 to Utah International <br />1977 <br />Mining operations begin on the site <br />1982 <br />Permit C-81-010 issued, replacing C-76-11 <br />April 1983 <br />Utah International transfers Trapper Mine to its then wholly -owned <br />subsidiary, Trapper Mining Inc. <br />July 1983 <br />Utah International sells Trapper Mining Inc. to corporate consortium that <br />owns Craig power plant <br />1987 <br />Permit Revision PR-01 approved (changes in permit boundary, topsoil <br />stripping, overburden blasting, and pit pumpage in Colt and Browning <br />pits) <br />1988 <br />Permit Renewal RN-01/Permit Revision PR-02 approved (changes in pit <br />advancements, new pits, environmental baseline data, sediment/erosion <br />control, operations description, etc.) <br />1993 <br />Permit Renewal RN-02/Permit Revision PR-03 approved (new pits and <br />advancement of existing pits) <br />1998 <br />Permit Renewal RN-03/Permit Revision PR-04 approved (advancement <br />of pits, new pits, update of information in permit application) <br />1998 <br />Phase I and II bond release request, SL-01, approved for 2511.7 acres <br />Phase I, 1548.0 acres Phase II <br />1999 <br />Phase II bond release request, SL-02, approved for 319.5 acres <br />2000 <br />Five pits are open on the Trapper Mine; of these, three are being actively <br />mined (D, F, and A -South pits), one is being backfilled with ash from the <br />Craig power plant (Ash pit), and one is temporarily abandoned (E pit). <br />2002 <br />Phase II bond release request, SL-03, approved for 592.7 acres <br />2003 <br />Renewal RN-04/Permit Revision-05 approved (advancement of pits, re- <br />orientation of Pits G and Z. Revised post -mining topography) <br />2003 <br />Phase III bond release request, SL-04, approved for 1857.7 acres on the <br />west side of the permit area. <br />2004 <br />Phase I bond release request, SL-05, approved for 823.9 acres <br />MT8_Trapper Midterm 2020 Findings JLE (1) Page 3 <br />