Final Environmental Impact Statement Rio de los Pinos Vegetation ...

Final Environmental Impact Statement Rio de los Pinos Vegetation Management Project
Alternative 2
Table 3.3-2. Alternative 2 effects on the Key Issues
Key Issue Indicators Alternative 2 – Full Salvage Harvest
a. Total area treated (acres)
b. Disturbance by watershed
-50501 (6
1. Watershed
Health
th Level)
-5050102 (7 th Level)
-5050101 (7 th 878 acres
12.2%
Level Watershed of Concern)
c. Old roads re-opened (miles)
6.1%
18.0%
3.3 miles
d. Road maintenance (miles)
11.9 miles
e. New temp road construction (miles)
0.2 miles
a. Salvage harvesting (acres)
878 acres
b. Late-successional habitat structural class 17.8%
2. Forest changed (percent)
Condition c. Spruce beetle risk rating (average)
Moderate
d. Heavy fuels removed from project area
(tons/acre)
25 tons/acre
Key Issue 1. Approximately 878 acres would be salvaged under this alternative. No new
system road construction would occur, but 0.2 miles of new temporary road construction would
occur, to be closed following management activities. Approximately 3.3 miles of old road would
be re-opened, also to be closed following management activities. Segments of system road
reconstruction/spot reconstruction (representing 10.1miles) would occur to meet watershed
restoration opportunities. Project design criteria would be implemented to limit the amount of
potential structural changes in watershed integrity tied to vegetation type, soil type, moisture
availability, or other ecological characteristics due to timber harvesting and road
construction/reconstruction activity. Erosion and stream sedimentation concerns from existing
road conditions would be repaired.
Key Issue 2.
This alternative would treat the largest area, allowing the most utilization of dead
material, and providing the most opportunity to assist the stands in regenerating by utilizing
artificial regeneration methods. A sizeable change in late-successional habitat structural class
would occur, speeding a process that will occur naturally. The largest amount of heavy fuels
would be removed from the area under this alternative.
Alternative 3
Table 3.3-3. Alternative 3 effects on the Key Issues
Key Issue Indicators Alternative 3 – Reduced Salvage Harvest
a. Total area treated (acres)
b. Disturbance by watershed
-50501 (6
1. Watershed
Health
th Level)
-5050102 (7 th Level)
-5050101 (7 th 607 acres
12.0%
Level Watershed of Concern)
c. Old roads re-opened (miles)
5.9%
17.4%
2.5 miles
d. Road maintenance (miles)
9.9 miles
e. New temp road construction (miles)
0.0 miles
Chapter 3 – Affected Environment &Environmental Consequences Page 3-3