2015-02-26_REPORT - C1981028

• Permit No: C1981028
• IBM Index Class Name: Report
• Doc Date: 2/26/2015
• Doc Name: Annual Hydrology and Reclamation Report
• From: Coors Energy Company
• To: DRMS
• Annual Report Year: 2014
• Permit Index Doc Type: Hydrology Report
• Email Name: TNL
• Email Name: DIH
• Media Type: D
• Archive: No

Keenesburg Mine 2014 Vegetation Monitoring Report
Table 3: Reclamation Area 30 Species Composition
Life Form
Cover
Data
Present
Graminoids
Perennial
8
10
Annual
3
4
Native
10
12
Introduced
1
2
Cool Season
3
3
Warm Season
8
11
Total
11
14
Forbs
Perennial
2
3
Annual
6
10
Native
5
8
Introduced
3
5
Total
8
13
Woody Plants
0
1
Succulents & A avoids
0
1
Total Species
19
29
5.2 Reclamation Area 31
Reclamation Area 31 is an 11.92 -acre parcel that was also part of the B Pit mining area. This
area was graded to blend into the undisturbed area to the west and the reclaimed mining and
operational areas to the east resulting in a gentle east - facing slope. Final revegetation seeding
with the DRMS- approved permanent seed mixture took place in the fall of 2009.
5.2.1 Vegetation Cover
Total vegetation cover of Reclamation Area 31 averaged 37.2% (Table 4) which represents a
large increase from the 25.8% observed in 2012. However, total native vegetation cover was
only 17.2 %. It was again necessary to remove cheatgrass from the total vegetation cover value
that was used to compare the Reclamation Area to the Success Standard resulting in a
comparison value of 20.2% for Reclamation Area 31.
The three dominant species each contributing to the cover nine of the ten transects were sand
dropseed, cheatgrass, and prickly lettuce. These species combined to contribute 20% of the total
vegetation cover on average.
5.2.2 Herbaceous Production
Total herbaceous production within Reclamation Area 31 averaged 101.64 g /m2 (907 lb /acre) in
2014 (Table 5). Perennial grasses accounted for 57% of this, while annual forbs contributed
36 %, perennial forbs 2 %, and annual grasses 5 %. Cheatgrass constituted 4% of the total
production and total average production without cheatgrass was 97.65 g/m2 (871 lb /acre) which
was the value used for comparison to the success standard.
Habitat Management, Inc. 10 September 2014