What do we know about heavy metals in soil? What do we know about lead exposure through soil and garden plants? What do we know about cadmium and arsenic in soils? What can I do if I’m at risk for heavy metals in my garden soil?
Burning the slash left behind after a logging operation isn't the only method for getting rid of it. Among the alternatives are piling but not burning, "forestry mulching," creating biochar and doing nothing.