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Table B: Soil risk rating criteria for potential damage to soil by fire

Surface layer 10-20 cm thick and slope >30% or surface layer < 10 cm and slope < 30%. High or moderate ratings may indicate the need to consider winter burning, alternate lighting techniques, monitoring of fuel moisture content, yarding of unmerchantable

Risk Factor -->

Low

Moderate

High

Medium texture (loams)Texture

Aspect

 Rock fragments <35%   
      Organic matter > 2%

NE, N, NW

SE, S, SW

 
      Organic matter < 2% 

NE, N, NW

SE, S, SW

 Rock fragments 35-60%   
      Organic matter > 2% 

All

 
      Organic matter < 2%  

All

 Rock fragments >60%   
      Organic matter > 2% 

NE, N, NW

SE, S, SW

      Organic matter < 2%  

All

Fine texture (clays)   
 Organic matter > 2% 

All

 
 Organic matter < 2%  

All

Coarse texture (sands)  

 

 

Organic matter > 2%

 

NE, N, NW

SE, S, SW

 Organic matter < 2%  

All

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