2009-01-29_REVISION - C1981019 ‎(4)‎

• Permit No: C1981019
• IBM Index Class Name: REVISION
• Doc Date: 1/29/2009
• Doc Name: 3rd Adequacy Review
• From: DRMS
• To: Colowyo Coal Company
• Type & Sequence: TR72
• Email Name: JRS
• Media Type: D
• Archive: No

STATE OF COLORADO
DIVISION OF RECLAMATION, MINING AND SAFETY
Department of Natural Resources
1313 Sherman St., Room 215
Denver, Colorado 80203
Phone: [phone]
FAX: [phone]
29 January 2009
Mr. Kurtis Blunt
Colowyo Coal Company, LP
5731 State Highway 13
Meeker, CO 81641
Re: Colowyo Mine C-1981-019
Third Adequacy Review - Technical Revision 72
Dear Mr. Blunt:
COLORADO
D I V I S ION OF
RECLAMATION
MINING
SAFETY
Bill Ritter, Jr.
Governor
Harris D. Sherman
Executive Director
Ronald W. Cattany
Division Director
Natural Resource Trustee
The Division has received your responses to the Division's 26 June 2008 second adequacy letter
for Technical Revision 72. Thank you for your timely response to this letter. On 20 January
2009 the Division met with Brian Holmes and Jon Wangnild of DOW regarding the specifics of
the outstanding issues of TR-72. The Division has reviewed your responses and has the
following follow-up questions and/or comments.
Backfilling and Grading 2.05.4(2)(c) and 4.141
1. Item Resolved in first adequacy review.
Topsoil [(2.05.(2)(d) and 4.061
2. The proper footnote has been added to Table 2.05-1 as requested. Item Resolved.
Depending on the extent to which actual South Taylor salvage volumes differ from
volumes projected in the Soil Resources section of the application, topsoil replacement
plan narrative details may also need to be refined prior to initiation of South Taylor
topsoil replacement operations, in conjunction with future revision of the table.
In the 26 June 2008 letter, the Division requested further amendment of the topsoil
replacement plan, to provide the level of detail and commitment necessary to demonstrate
compliance with regulatory requirements and land use/community type objectives.
Additional details were requested, to ensure that topsoil will be redistributed to achieve
an approximate uniform, stable thickness consistent with postmining land uses and
vegetation requirements, and to ensure ecologically significant variation in replacement
thickness across the landscape. The Division specifically requested a plan that would
specify topsoil replacement thickness averages and ranges for delineated topographic
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Mined Land Reclamation Denver • Grand Junction • Durango Active and Inactive Mines