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included mining of the E -seam at the end wall at the south end of the pit. TR -103 was approved <br />on August 7, 2014, and issued on August 22, 2014. <br />TR -104: Technical Revision No. 104 was received on September 25, 2014 and found complete <br />on September 29, 2014. TR -104 was proposed to improve the long-term stability of East Taylor <br />Ditch, Colowyo proposed to construct a two acre-foot impoundment in the channel of the ditch. <br />TR -104 was approved on March 6, 2015, and issued on March 31, 2015. <br />TR -105: Technical Revision No. 105 was received on April 8, 2015 and found complete on April <br />20, 2015. TR -105 revised the approved post -mining topography and associated post -mining <br />drainage channels in the East Pit, West Pit, and South Taylor Pit. No changes to the permitted, <br />affected, or disturbed acreages were proposed. TR -105 was approved on September 9, 2015, and <br />issued on September 22, 2015. <br />TR -106: Technical Revision No. 106 was received on June 25, 2015 and found complete on July <br />3, 2015. TR -106 redesigned the access and haul road for the Collom Project. TR -106 was <br />approved on October 6, 2015, and issued on October 20, 2015. <br />TR -107: Technical Revision No. 107 was received on June 13, 2016 and found complete on June <br />23, 2016. TR -107 proposes topsoil haulage and a small area exemption for an area being <br />reclaimed that contained the Lower Administration building near Colowyo's entrance to the <br />mine. TR -107 is in the adequacy process. <br />3.1.7 Status of Minor Revisions <br />This section identifies Minor Revisions (MRs) processed since the issuance of Permit Renewal <br />Number 6, May 20, 2013. <br />MR -126: Minor Revision No. 126 was submitted on May 24, 2013. MR -126 was considered <br />complete on June 3, 2013, and withdrawn on October 3, 2013. This minor revision provided a <br />cumulative bond schedule. <br />MR -127: Minor Revision No. 127 was submitted on October 2, 2013. MR -127 was considered <br />complete on October 10, 2013, and approved / issued on October 21, 2013. This minor revision <br />added Exhibit 23 to the PAP and proposed new in -pit drilling locations within the South Taylor <br />Pit. <br />PR -04, Colowyo Coal Mine C1981-019 12 August 2016 <br />