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Table 2 - Summary of history of Permit C-81-010 <br />Date Action <br />1954 - 1958 State, county, and federal coal leases issued for the future Trapper Mine <br /> site <br />1972 Utah International, original operator of Trapper Mine, begins <br /> environmental studies of the site <br />1976 Colorado Mined Land Reclamation Division issues mining permit C-76- <br /> 11 to Utah International <br />1977 Mining operations begin on the site <br />1982 Permit C-81-010 issued, replacing C-76-11 <br />April 1983 Utah International transfers Trapper Mine to its then wholly-owned <br /> subsidiary, Trapper Mining Inc. <br />July 1983 Utah International sells Trapper Mining Inc. to corporate consortium that <br /> owns Crai power plant <br />1987 Permit Revision PR-01 approved (changes in permit boundary, topsoil <br /> stripping, overburden blasting, and pit pumpage in Colt and Browning <br /> its) <br />1988 Permit Renewal RN-O1/Permit Revision PR-02 approved (changes in pit <br /> advancements, new pits, environmental baseline data, sediment/erosion <br /> control, o erations description, etc.) <br />1993 Permit Renewal RN-02/Permit Revision PR-03 approved (new pits and <br /> advancement of existing its) <br />1998 Permit Renewal RN-03/Permit Revision PR-04 approved (advancement <br /> of its, new its, update of information in permit application) <br />1998 Phase I and II bond release request, SL-01, approved for 2511.7 acres <br /> Phase 1, 1548.0 acres Phase II <br />1999 Phase 11 bond release request, SL-02, approved for 319.5 acres <br />2000 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 ower plant (Ash it), and one is temporarily abandoned (E it). <br />2002 Phase II bond release request, SL-03, approved for 592.7 acres <br />2003 Renewal RN-04/Permit Revision-05 approved (advancement of pits, re- <br /> orientation of Pits G and Z. Revised post-mining to ogra hy) <br />2003 Phase III bond release request, SL-04, approved for 1857.7 acres on the <br /> west side of the permit area. <br />2004 Phase I bond release request, SL-05, approved for 823.9 acres <br />2005 Phase II bond release request, SL-06, approved for 819.1 acres <br />2006 Phase III bond release request, SL-07, approved for 762.8 acres <br />2006 A major slide occurred in October 2006 at the East Panel. <br />2008 Renewal RN-05 approved. <br />Trapper Midterm 2010 Findings.REV 3.docx Page 3