2016-04-21_REVISION - C1981019

• Permit No: C1981019
• IBM Index Class Name: Revision
• Doc Date: 4/21/2016
• Doc Name: Adequacy Letter
• From: DRMS
• To: Tri-State Generation and Transmission Association, Inc
• Type & Sequence: PR4
• Email Name: RDZ
• Email Name: DIH
• Media Type: D
• Archive: No

COLORADO
Division of Reclamation,
Mining and Safety
Department of Natural Resources
1313 Sherman Street, Room 215
Denver, CO 80203
April 21, 2016
Chris Gilbreath
Tri-State Generation and Transmission Association, Inc.
P.O. Box 33695
Denver, CO 80233-0695
Re: Colowyo Mine (Permit No. C-1981-019), PR -04, adequacy items 64 to 87
Dear Mr. Gilbreath:
The Division has reviewed the PR -04 adequacy response letter from Tri-State Generation and
Transmission Association (Tri-State) dated March 31, 2016. Tri-State is the parent company of
Colowyo Coal Company L.P. (CCC), and the terms Tri-State and CCC are synonymous for the
purposes of this letter.
The Division has the following comments on items 64 to 87, numbered in accordance with previous
adequacy review letters.
64. The response was deemed sufficient in previous adequacy letters.
65. The response was deemed sufficient in previous adequacy letters.
66. The response was deemed sufficient in previous adequacy letters.
67. The response was deemed sufficient in previous adequacy letters.
68. The response is sufficient.
69. The response was deemed sufficient in previous adequacy letters.
70. The response was deemed sufficient in previous adequacy letters.
71. The response was deemed sufficient in previous adequacy letters.
72. The response was deemed sufficient in previous adequacy letters.
73. The response is sufficient.
74. The response is sufficient for the purposes of this revision. However, CCC should attempt to
locate and map DHSS -78-1, since it will need to be properly plugged and abandoned prior to
bond release.
75. This item has not yet been adequately addressed. CCC submitted Exhibit 7, Item 21A, which
contains well completion data for MC -04-01, MC -04-02, MJ -95-01 and MJ -95-03. The
following issues are outstanding:
MLC -04-02 is shown on Map 10B and included in Exhibit 7, Item 21, Appendix 5A, but
MLC -04-01 is listed in Table 2.04.7-38. Please clear up the confusion over this well/these
wells.
Is completion information available for MJ -95-02, UL -95-01 and C -04-16B? If so, please
add it to the PAP.
QF GQ�Q
1313 Sherman Street, Room 215, Denver, CO 80203 P 303.866.3567 F 303.832.8106 http://mining.state.co.us
John W. Hickenlooper, Governor I Mike King, Executive Director I Virginia Brannon, Director * * 1g76