Sunday, May 29, 2011

Distribution Line Clearing - Con Ed guidelines

The distribution line vegetation management specification listed publicly is 10' on each side of pole and 15' over top of pole for clearance.  (From Con Edison Tree Guide online -
Anything more is not to Con Ed spec. 

Also, Con Ed states that pruning must conform to ANSI A300 Part 1 specifications - which disallows topping and is quite specific about the way a branch can be cut and the size of branches that can be cut vis-a-vis the size of the branch left in place. And no more than 25% of a crown removal should be done if tree is to be left standing.

Needless to say, for the last cycles in Irvington, these guidelines were often broken and we have lots of photographic evidence to the fact.

That said, there is a practical tradeoff as to allowing heavier pruning or simply deciding to remove the tree in question. In the case of evergreens too close to lines, we've seen entire sides of trees pruned bare (180 degrees of branches removed top to bottom). While this may be "proper" in terms of the arborcultural need to remove the branches of most evergreens fully, the net result is all too often one funky looking evergreen...

The best defense is to monitor work in progress on trees adjacent to your property. Work crews typically start around 8 AM and work till 4:30 PM M-F. Weekend work is typically not undertaken with distribution lines.

1 comment:

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