AN ORDINANCE AMENDING SECTIONS 8 AND 11 OF THE ZONING PLAN EMBRACING PORTIONS OF THE DISTRICTS OF ERMITA AND PACO, UNDER SECTION 3 OF ORDINANCE NO. 2830, OTHERWISE KNOWN AS THE ZONIFICATION ORDINANCE, AS AMENDED, BY CONVERTING THAT PORTION OF CALIFORNIA STREET, FROM TAFT AVENUE TO DART STREET, FROM RESIDENTIAL "A" ZONE TO COMMERCIAL ZONE.