18 CFR §12.20

1. (a)Unless provided with a written exemption pursuant to § 12.21, every applicant or licensee must develop and file with the Regional Engineer an emergency action plan and appendices, verified in accordance with § 12.13.
2. (b)The emergency action plan must be:
   1. (1)Developed in consultation and cooperation with appropriate Federal, state, and local agencies responsible for public health and safety; and
   2. (2)Designed to provide early warning to upstream and downstream inhabitants, property owners, operators of water-related facilities, recreational users, and other persons in the vicinity who might be affected by a project emergency as defined in § 12.3(b)(9).