California Code, Health and Safety Code - HSC § 33607

(a) A final redevelopment plan for the project area is adopted on or after January 1, 1986.

(b) A final redevelopment plan for the project area was adopted prior to January 1, 1986, but its boundaries are changed on or after January 1, 1986, to add land to, or to exclude land from, the project area.  However, in the case of a project area which changes its boundaries on or after January 1, 1986, to add land to the project area, the reimbursement shall relate only to expenses incurred by the county with respect to the added area.