2017-09-28_REVISION - M1981185 ‎(155)‎

• Permit No: M1981185
• IBM Index Class Name: Revision
• Doc Date: 9/28/2017
• Doc Name Note: Part 6 of 12
• Doc Name: Request For Amendment To Permit
• From: Sunrise Mining, LLC
• To: DRMS
• Type & Sequence: AM2
• Email Name: LJW
• Email Name: GRM
• Media Type: D
• Archive: No

Vegetation Information
water river & beaver
Mixed deciduous and coniferous forests have a greater biodiversity than most other forests verse standof
their multiple layers of canopy and dense understory. This creates a heterogeneous,
struc-
ture as can be seen in Table 2. Three plant species dominate the mountain slopes of this landscape: Doug-
las fir (Pseudotsuga nzenziesii), quaking aspen (Populus tremuloides), and gambel oak (Quercus
gambelii). Douglas fir is widespread throughout the entire southern Rockies, where moisture is abundant.
Douglas fir is not a true fir; it has similarities to spruces and hemlocks as well as firs. Narrowleaf cot-
tonwood (Populus angustifolia) and willow (Salix sp.) are the dominant overstory vegetation interspersed
with blue spruce in the riparian zone along the La Plata River.
Table 2. Estimates of cover and height for principal species in vegetative life forms
* Due to multi -tier vegetation cover, numbers may add to more than 100% ground cover
MCF = Mixed Coniferous Forest, MD/CF = Mixed Deciduous/Coniferous Forest, FR = Forested Ri-
parian, AF/MSM = Aspen Forest/Mountain Shrub Mix, MSM = Mountain Shrub Mix
** The grass and herb understory was diverse in species without obvious dominance by few species;
Quaking aspen is serial in this system, and in the absence of fire, the system will succeed to conifer -
dominated forest (Mueggler, ure aspen occurrence9884) . Nearly a s to the prered years sent -day aspen -con fer forest and woodland
n and livestock grazing
have converted much of the p p
ecological system, with conifers increasing in dominance.
4 Mueggler WF. 1988. Aspen community types of the Intermountain Region. Ogden, UT: USDA, USFS, Intermoun-
tain Research Station; Report nr USDA Forest Service General Technical Report INT -250. 135 p.
Sunrise Mining, LLC
112(d) Permit
Revised July 8, 2011 Page 3 of 5
Exhibit J — Rule 6.4.10
Cover* (%)
height
MCF
MD/CF
FR
AF/MSM
MSOM
Tree
70
65
45
35
70-80'
Douglas fir
40
35
10
35
25-35'
Quaking aspen
20
75-90'
Ponderosa pine
25
30-40'
Limber pine
5
2
25-35'
Blue spruce
2
5
40-50'
Cottonwood
35
30
65
Tall shrub
15
5 0
35
20
55
15-20'
Gambel oak
20
Willow
10
20
10
10
10
5-15'
Rocky mtn maple
10
6-25'
chokecherry
10
15'
serviceberry
8
8
15
50
40
Low Shrub
10
40
1-2'
Wood's rose
2
2-4'
Mtn snowberry
5
20
10
10
Grass""
20
20
30
20
25
10
15
Herb""
* Due to multi -tier vegetation cover, numbers may add to more than 100% ground cover
MCF = Mixed Coniferous Forest, MD/CF = Mixed Deciduous/Coniferous Forest, FR = Forested Ri-
parian, AF/MSM = Aspen Forest/Mountain Shrub Mix, MSM = Mountain Shrub Mix
** The grass and herb understory was diverse in species without obvious dominance by few species;
Quaking aspen is serial in this system, and in the absence of fire, the system will succeed to conifer -
dominated forest (Mueggler, ure aspen occurrence9884) . Nearly a s to the prered years sent -day aspen -con fer forest and woodland
n and livestock grazing
have converted much of the p p
ecological system, with conifers increasing in dominance.
4 Mueggler WF. 1988. Aspen community types of the Intermountain Region. Ogden, UT: USDA, USFS, Intermoun-
tain Research Station; Report nr USDA Forest Service General Technical Report INT -250. 135 p.
Sunrise Mining, LLC
112(d) Permit
Revised July 8, 2011 Page 3 of 5
Exhibit J — Rule 6.4.10