As part of Alternative B: Harvest a near future entry could occur if a 

 beetle infestation is found. This would have no impacts in Donovan, 

 Ashby or Dirty Ike Creeks, where no fish bearing reaches are present in 

 the proposed project area. However, additional disturbance that could 

 increase soil erosion upslope of Wallace Creek could increase sediment 

 delivery and reduce spawning habitat. Repeated entries for beetle salvage 

 could increase cumulative impacts by decreasing canopy cover and 

 increasing erosion. 



4.3.1.5.4 Cumulative Effects of Alternative B: Harvest 



Sediment yields are expected to increase in Wallace Creek as a result of 

 recent fire activity and past management activities in the watershed. No 

 additional cumulative impacts are expected as a result of the proposed 

 activities. However, if repeated entries occur, cumulative impacts could 

 increase as a result of increased soil erosion, sediment delivery and a 

 reduction in canopy and ground cover. 



4.3.1.6 Noxious Weeds 



4.3.1.6.1 Alternative A: No Harvest (No Action) 



It is expected that noxious weed infestations may increase in the burned 

 areas. Existing knapweed infestations in the area are high along roadsides 

 and forested areas. High intensity bum areas will be at higher risk of 

 infestation due to native species competition with knapweed. As part of 

 the restoration effort, disturbed areas were seeded with a mixture of 

 species to hopefully out-compete knapweed. It is expected however, that 

 fire suppression activities resulted in an increase in noxious weeds and the 

 potential for the introduction of new species. 



We also expect some noxious weeds may have been introduced from 

 suppression activities. DNRC would monitor the area for new weeds, and 

 treat as a priority. Under the Alternative A: No Harvest (No Action) we 

 would have a continuing effort at weed control, but expect less funds 

 would be available to treat noxious weeds, as current funding is limited. 

 The following noxious weed control measures are planned that appl)' to 

 Alternative A: No Harvest (No Action) and Alternative B: Harv^est. 



• Promptly seed soils disturbed during restoration activities and most 

 severely burned cut/fill slopes with site adapted grasses (including 

 native species) to reduce weed encroachment and help stabilize roads 

 from erosion. 



• Weed treatment measures include herbicide applications along 

 portions of project roads and accessible sites with a priority on spot 

 outbreaks of noxious weeds and as designated by the Forest officer. 

 Any herbicide treatments will be implemented by a certified applicator 

 according to herbicide label directions in accordance with applicable 



Dirty Ike Salvage Environmental Assessment 4-7 



