Section 65453 Of Article 8. Specific Plans From California Government Code >> Division 1. >> Title 7. >> Chapter 3. >> Article 8.

. (a) A specific plan shall be prepared, adopted, and amended in the same manner as a general plan, except that a specific plan may be adopted by resolution or by ordinance and may be amended as often as deemed necessary by the legislative body.
  (b) A specific plan may be repealed in the same manner as it is required to be amended.