I don't work for PG&E so I don't know why they do such a crappy job of clearing trees and brush around power poles and lines in my county. Been that way for at least the last 30 years. It could be stupid regulations from Sacramento, environmentalist lawsuits and activist judges, corporate laziness to save costs or even just crappy job performance from all the 3rd party contractors they hire to do the clearing. Probably a combination of all of the above. I wouldn't lay all of the blame on PG&E but they are not innocent either.