California Code, Government Code - GOV § 65065.1

(a) The district may prepare, maintain, and regularly review and revise, a regional plan as defined in Section 65060.7, and may, after at least two public hearings in different parts of the region and such other public meetings as may appear to it advisable, adopt such plan as the regional plan for the region.  In preparing, adopting, maintaining, reviewing and revising the regional plan, the board shall take account of and seek to harmonize, within the framework of the needs of the regional community as a whole, the master or general plans of cities and counties within the region, and the plans and planning activities of state, federal and other public and private agencies, organizations and instrumentalities within the region and adjacent to it.

(b) The district, acting in its own judgment, may make, publish, or assist in making or publishing, studies or investigations of the resources of the region and of existing or emerging problems of any nature related to the physical growth and development, living conditions, beauty, or prosperity of the region, or any part thereof.

(c) The district may, acting in its own judgment, offer its facilities and services to assist in the solution of problems related to physical development involving two or more governing bodies, planning commissions, agencies, organizations or instrumentalities, public or private;  and may otherwise participate in any program or activity intended to seek or find common or co-operative solutions to problems related to physical development or the integration of policies related to physical development and conservation within the region, or in any part thereof.