areas if adequate slash does not exist after harvesting. These trees will be 

 felled perpendicular to the slope to help slow water and trap sediment. 



4.3.1.4,4 Cumulative Effects of Alternative B: Harvest 



Cumulative effects, including, compaction, erosion and displacement as a 

 result of the proposed activities are expected to be low to moderate, if 

 recommended mitigation measures are properly implemented. Near future 

 entries are possible if beetle infestations occur. If repeated entries were to 

 occur in the next two years, the risk of cumulative effects would increase. 

 Repeated entries could cause increased disturbance, including further 

 compaction, erosion and displacement of soils. 



4.3.1.5 Cold Water Fisheries 



4.3.1.5.1 Alternative A: No Harvest (No Action) 



The only fish-bearing stream near the project area is Wallace Creek, which 

 is located below the project area in Section 7. Increases in sediment levels 

 are expected to be low to moderate as a result of the wildfire and fire 

 suppression activities. The mixed severity bum between Wallace Creek 

 and the high severity bum area in section 12 will not be harvested (see 

 bum severity map). The mixed severity bum has areas of ground cover 

 and course woody debris that remained unbumed or slightly charred, 

 which should help filter sediment and retard flows. 



4.3.1.5.2 Cumulative Effects of Alternative A: No Harvest (No 

 Action) 



Under the Alternative A: No Harvest (No Action), cumulative impacts to 

 fisheries is expected to be low to moderate. There are no tributaries with 

 continuous surface flow to any fish bearing stream channel in the bum 

 area. Wallace Creek is located directly below the bumed area. Sediment 

 levels in this portion of Wallace Creek are expected to increase. 



4.3.1.5.3 Alternative B: Harvest 



There are no fish bearing streams located in the project area in Ashby 

 Creek, Donovan Creek or Dirty Ike Creek. Wallace Creek is the only fish- 

 bearing stream located near the project area. There will be no harvest 

 activities in or near Wallace Creek. Implementation of recommended 

 mitigation measures during harvest activities should minimize the 

 potential for sediment delivery to Wallace Creek. 



Under Altemative B: Harvest, two roads crossings in the Dirty Ike 

 watershed that do meet BMP standards and are causing direct sediment 

 delivery to the stream channel will be repaired to meet BMP's and reduce 

 direct sediment delivery to the stream channel. 



Dirty Ike Salvage Environmental Assessment 4-6 



