We have gone through our entire system and removed any transformers or switches that had pcb oil in them and replaced them with transformers with safe environmental friendly oil.
There are areas in town where there is a large population of squirrels. In these areas we put guards on our transformers to keep the squirrels from electrocuting themselves.
Our tree trimming program is set up so we can train the trees to grow around our lines, as much as possible. We do not to just go in and wildly cut the top out of the trees, with no concern for the trees well being.