Zoning implements the General Plan through a series of Zone Districts that regulate allowed land uses and development standards.  State law requires zoning to be consistent with the General Plan.  Accordingly, upon adoption of the 2004 General Plan, one of the first "Implementation Measures" was an update of the Zoning Ordinance for consistency with the new plan.  The update was to be completed within a year after adoption of the plan.  The process took much longer, and was finally completed on December 15, 2015.

The Zoning Ordinance Update does not change the General Plan - it implements the plan.