Environmental Assessment

AFFECTED ENVIRONMENT & ENVIRONMENTAL CONSEQUENCES CHAPTER 3
Corridor
ID #
Total
Area
(net -
gross
ac.)
Prescriptions (acres)
Vegetation /
Fuels
Treatments
Acreages/Pct of
Corridor)
Alt 2 Alt 3 Alt 2 Alt 3
16 Travel 149 - 183 None None 0
17 Travel /
OGMA
105 - 105
18 Travel 108 - 108
19 OGMA
/ Travel
284 - 589
20 Travel 274 - 395
21 Travel /
LOS
22 Travel /
LOS
163 - 351
202 - 414
23 OGMA 0 - 263
24 Travel 0 - 199
Veg/Pretreat
(31)
Veg/Pretreat
(5)
Veg/Pretreat
(27)
Veg/Pretreat
(107)
Burn/Mow
(75),
Veg/Pretreat
(29)
Burn/Mow
(111)
None
(outside)
None
(outside)
Veg/Pretreat
(43)
Veg/Pretreat
(5)
Veg/Pretreat
(33)
Veg/Pretreat
(46)
Burn/Mow
(73),
Veg/Pretreat
(37)
Burn/Mow
(102),
Veg/Pretreat
(31)
None
(outside)
None
(outside)
31 - 30 43 - 41
5 - 5 5 - 5
27 - 10 33 - 12
107 -
39
104 -
64
111 -
55
3-127
46 - 17
110 -
67
133 -
66
LOS / OGMA
Connectivity
Effect – Both Alts
No Effect - all
thinning in corridor
would meet screens
No Effect - all
thinning in corridor
would meet screens
No Effect - all
thinning in corridor
would meet screens
No Effect - all
thinning in corridor
would meet screens
No Effect - all
thinning in corridor
would meet screens
No Effect - all
thinning in corridor
would meet screens
No Effect - all
thinning in corridor
would meet screens
Deer Cover Effects and
Acres Present in Units
Alt 2 50 Alt 3 50
0 0
2 ac. good
3 ac. marg.
0 0
4 ac. good +
14 marg.
35 ac. good
+ 37 ac.
marg.
2 ac. good
3 ac. marg.
5 ac. good
10 ac. marg.
11 ac. good
23 ac. marg.
5 ac. marg. 11 ac. marg.
5 ac. marg. 39 ac. marg.
25 Travel 210 / 246 None 0 0
26 Travel 0 / 58
None
(outside)
Cumulative Effects – There are no identified cumulative or cumulatively significant effects associated
with any of the current, on-going, or reasonably foreseeable actions in conjunction with any of the three
alternatives in this analysis. None of these actions would result in the loss of LOS.
Summary of Wildlife Species
Table 3-41 displays a partial listing of the wildlife species found in the planning area. It does not
include species associated with mixed conifer habitats because there are no mixed conifer plant
associations within the planning area. Those species with close ties to both the mixed conifer and either
the ponderosa pine or lodgepole pine associations are included.
Historic Range of Conditions - Historic population levels of wildlife species endemic to the planning
area are unknown. It is likely that those species that are closely associated with natural disturbance
processes (cycles of insect, disease and wildfire) were more common. This is based upon the fact that
active management by humans has suppressed wildfires and reduced the frequency of insect and disease
epidemics by harvesting the forests to reduce competition among trees. The removal of competing trees
and other vegetation has not prevented significant increases in forest density with the lack of frequent,
low intensity wildfire.