Amends existing law to revise provisions regarding underground facilities damage prevention.

Under current damage prevention statute there is not a definition for or direction about how to handle an emergency excavation. This legislation further defines “emergency” (relatively to this chapter of law), “emergency excavation” and “notice of emergency excavation” and establishes a process for underground facility owners to handle an emergency excavation. It also extends the length of time a maintained surface-marking for utility facilities is valid from 3 weeks to 4 weeks.