Cal. Harb. & Nav. Code § 5941

The board of supervisors of any county in which a district is situated may direct the harbor commission, appointed pursuant to Section 5902, to prepare surveys for the acquisition, improvement or maintenance of such lands as is herein authorized, prepare plans therefor and estimates of cost thereof, and to report to the board of supervisors thereon, with its recommendations covering the necessity, advantages and benefits to be derived by the acquisition, improvement or maintenance of such lands as public beaches.