To prevent injury to people climbing or working in trees adjacent to power lines. Fire Safety Trees in contact with high voltage power lines can act as an ignition source of fires.
Trees represent one of the largest causes of power outages in California.
Rule 35 Homeowner Liability Failure to allow a utility company to comply with the law can result in liability to the homeowner for damages or injuries resulting from a vegetation hazard. Many insurance companies do not cover these types of damages if the policy owner has refused to allow the hazard to be eliminated. You can help prevent electric outages, fire and public safety hazards. Clearing all flammable vegetation a minimum of 30 feet around your home and other structures provides the greatest chance for survival and is also required by law. If you must plant trees near power lines, make sure the maximum mature tree height is ten feet away from the closest power line.