(1) The commission must establish a single statewide toll-free telephone number to be used for referring excavators to the appropriate one-number locator service.
(2) The commission, in consultation with the Washington utilities coordinating council, must establish minimum standards and best management practices for one-number locator services.
(3) One-number locator services must be operated by nongovernmental agencies.
(4) All facility operators within a one-number locator service area must subscribe to the service.
(5) Failure to subscribe to a one-number locator service constitutes willful intent to avoid compliance with this chapter.