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

This table applies to soils with a surface layer < 10 cm depth and on slopes > 30%. High or moderate ratings may indicate the need to consider winter burning, alternate lighting techniques, monitoring of fuel moisture content, yarding of unmerchantable ma

Risk Factor -->
Low
Moderate
High
Medium texture (loams)
Aspect
Rock fragments <35%
     Organic matter > 2% All
     Organic matter < 2% All
Rock fragments 35-60%
     Organic matter > 2% NE, N, NW SE, S, SW
     Organic matter < 2% All
Rock fragments >60%
     Organic matter > 2% All
     Organic matter < 2% All
Fine texture (clays)
Organic matter > 2% NE, N, NW SE, S, SW
Organic matter < 2% All
Coarse texture (sands)
Organic matter > 2% All
Organic matter < 2% All

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Risk Factor -->			Low	Moderate	High
Medium texture (loams)			Aspect
	*Rock fragments <35%*
		Organic matter > 2%		All
		Organic matter < 2%			All
	*Rock fragments 35-60%*
		Organic matter > 2%		NE, N, NW	SE, S, SW
		Organic matter < 2%			All
	*Rock fragments >60%*
		Organic matter > 2%			All
		Organic matter < 2%			All
Fine texture (clays)
		Organic matter > 2%		NE, N, NW	SE, S, SW
		Organic matter < 2%			All
Coarse texture (sands)
		Organic matter > 2%			All
		Organic matter < 2%			All