California Code, Government Code - GOV § 91525.5

A member of the board or other officer of an authority or a member of the governing body who has any financial interest, other than an interest as defined by Section 1091 or 1091.5, in any project, project agreement, indenture, bonds, or the sale thereof, shall fully disclose the nature of the interest to the board, or governing body, and shall not cast a vote upon any matter concerning that project, project agreement, indenture, bonds, or the sale thereof, in any manner whatsoever, except that the presence of the member may be considered in determining the existence of a quorum.