Cal. Gov. Code § 4216.1

Every operator of a subsurface installation, except the Department of Transportation, shall become a member of, participate in, and share in the costs of, a regional notification center. Operators of subsurface installations who are members of, participate in, and share in, the costs of a regional notification center, including, but not limited to, the Underground Service Alert—Northern California or the Underground Service Alert—Southern California are in compliance with this section and Section 4216.9. A regional notification center shall not charge a fee to a person for notifying the regional notification center to obtain a ticket or to renew a ticket.