California Code, Public Utilities Code - PUC § 170048

(a) The authority has exclusive responsibility to study, plan, and implement any improvements, expansion, or enhancements at San Diego International Airport.

(b) The authority may commission planning, engineering, economic, and other studies to provide information to the board for making decisions about the location, design, management, and other features of future airports.

(c) The San Diego Association of Governments, or its successor, shall cooperate with the authority to include all airport system plans and facilities selected by the authority in the regional transportation plan consistent with state and federal law.

(d) The authority, the San Diego Association of Governments, local agencies, and the Department of Transportation shall cooperate to develop effective surface transportation access to new and existing airports.

(e) The authority may adopt a comprehensive plan on the future development of San Diego's regional international airport.