2014-04-04_GENERAL DOCUMENTS - C1981028

• Permit No: C1981028
• IBM Index Class Name: General Documents
• Doc Date: 4/4/2014
• Doc Name: Mid Term Permit Review ‎(MT6)‎
• From: DRMS
• To: Coors Energy Company
• Permit Index Doc Type: Findings
• Email Name: JLE
• Email Name: SB1
• Media Type: D
• Archive: No

SECTION II - REVISIONS TO THE PERMIT
The following is a summary of revisions to the permit since the RN6 proposed decision dated September 7,
2011.
SECTION III - STATUS OF STIPULATIONS
There are no stipulations on this permit at this time. Stipulations 1 through 4, 6 through 16, and 18 of the
original permit were resolved during the first five -year permit term. Stipulations 19, 22 and 27 were resolved
during the second five -year permit term. Stipulations 5, 17, 20, 21, 23, 24, 25, 26, 28, 29, 30 and 31 were
resolved during the third five -year permit term.
SECTION IV — Midterm Adequacy Review and Request for Revision
Pursuant to Rule 2.083, the Division has conducted a midterm review and has found that certain
modifications are needed to ensure future compliance with the Colorado Surface Coal Mining Reclamation
Act and the Regulations of the Colorado Mined Land Reclamation Board for Coal Mining. Coors Energy
Company must submit a Minor Revision by June 3, 2014 to address the following items:
During the review of the 2012 annual reclamation report, it was noted that the regression equation
used to determine the total vegetation cover success standard for reclaimed areas is incorrect. Page
116b of the permit indicates the equations is y= .0127x3 + .2115x2 + 2.1772x. The equation should
read y =- .0127x3 + .2115x2 + 2.1772x. Please revise page 116b of the permit with the correct
equation.
2. Page 117 of the permit indicates the last year of ash and mine waste rock disposal at the site is
estimated to be 2020. Also, the third paragraph of this page indicates CEC has been granted a
variance on performing contemporaneous reclamation for the B -Pit area until March 2014. Please
evaluate the estimated end date for disposal activities at the site and if the variance on performing
contemporaneous reclamation for the B -Pit is still necessary. If CEC plans to continue backfilling 13-
Pit with fly ash and mine waste rock it is likely the variance will need to be extended. Please revise
Page 117 accordingly.
The reclamation cost estimate contained Appendix S of the permit application package will need to
be updated based on the current reclamation cost estimate for the site. Please revise Appendix S to
0
Bond
No.
Subject
Decision /Date
Adjustment
Phase III release of approximately 42 acres of
Approve;
SL6
land.
1/4/2012
Yes
Revised revegetation cover and herbaceous
Approve;
TR43
production reclamation success standards.
1/10/2013
No
Update to Permit Application and permit text to
Approve;
MR45
update staff changes and contact information.
1/23/2013
No
Revised the ground water monitoring frequency
Approve;
TR44
from quarterly to semi-annually.
5/1/2013
No
SECTION III - STATUS OF STIPULATIONS
There are no stipulations on this permit at this time. Stipulations 1 through 4, 6 through 16, and 18 of the
original permit were resolved during the first five -year permit term. Stipulations 19, 22 and 27 were resolved
during the second five -year permit term. Stipulations 5, 17, 20, 21, 23, 24, 25, 26, 28, 29, 30 and 31 were
resolved during the third five -year permit term.
SECTION IV — Midterm Adequacy Review and Request for Revision
Pursuant to Rule 2.083, the Division has conducted a midterm review and has found that certain
modifications are needed to ensure future compliance with the Colorado Surface Coal Mining Reclamation
Act and the Regulations of the Colorado Mined Land Reclamation Board for Coal Mining. Coors Energy
Company must submit a Minor Revision by June 3, 2014 to address the following items:
During the review of the 2012 annual reclamation report, it was noted that the regression equation
used to determine the total vegetation cover success standard for reclaimed areas is incorrect. Page
116b of the permit indicates the equations is y= .0127x3 + .2115x2 + 2.1772x. The equation should
read y =- .0127x3 + .2115x2 + 2.1772x. Please revise page 116b of the permit with the correct
equation.
2. Page 117 of the permit indicates the last year of ash and mine waste rock disposal at the site is
estimated to be 2020. Also, the third paragraph of this page indicates CEC has been granted a
variance on performing contemporaneous reclamation for the B -Pit area until March 2014. Please
evaluate the estimated end date for disposal activities at the site and if the variance on performing
contemporaneous reclamation for the B -Pit is still necessary. If CEC plans to continue backfilling 13-
Pit with fly ash and mine waste rock it is likely the variance will need to be extended. Please revise
Page 117 accordingly.
The reclamation cost estimate contained Appendix S of the permit application package will need to
be updated based on the current reclamation cost estimate for the site. Please revise Appendix S to
0