The commission shall establish and maintain an office within the Delta or the City of Rio Vista, and for this purpose the commission may rent or own property and equipment. Any rule, regulation, procedure, plan, or other record of the commission which is of such a nature as to constitute a public record under state law shall be available for inspection and copying pursuant to the California Public Records Act (Chapter 3.5 (commencing with Section 6250) of Division 7 of Title 1 of the Government Code).