Erosion and Sediment Control Tip #48

 

This picture shows what could have been an effort to save a couple of trees on a construction site.  However, the trees didn’t survive.

 

Roots require oxygen that comes from the soil surface.  Anything done to the soil surface to minimize or eliminate the oxygen transfer will probably kill the tree.

 

I always encourage planners and designers to preserve trees on the site to be developed.  To safeguard the trees, you must:

  • Mark off the area around the tree at least to the drip line, or better yet, well beyond the drip line.
  • Keep ALL heavy equipment off this protected area. This means there probably needs to be hand-clearing in the area.
  • DO NOT place soil on top of the rooted (protected) area.
  • DO NOT place soil against the tree.
  • DO NOT place or store chemicals or fuels within the root (protected) area.
  • If trenching through the protected area is required, do not cut the roots in the trench. Professionals know how to do this with compressed air (air trenching).
  • If limb pruning is required, consult a certified arborist.

 

Perry L Oakes, PE

Erosion and Sediment Control Program Coordinator

AL Soil and Water Conservation Committee

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