The majority of utility companies if not all utility companies require
that a certified Utility Arborist has to be present at the work site. A
certified Utility Arborist is certified by ISA (International Society of
Arborists). The requirements are quite stringent to be certified as a
Utility Arborist, all ISA arborists are trained in proper pruning
techniques (no topping) and any arborist not following approved methods
will become decertified etc.

In order to retain certification all ISA arborists must take training
every three years or acquire similar education.
If you feel that the power line crew is incompetent ask to see who the
onsite arborist is and if there isn't one file a complaint.

Check out the website http://www.isa-arbor.com/

Anton - ISA arborist

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