The council hereby finds that this chapter is enacted to supersede and modify provisions of Ordinance No. 1174* and it is necessary in the interest of the public welfare and convenience that certain provisions of this chapter be made effective at specific times and therefor an emergency is hereby declared to exist, and computations for determining the accumulation of annual leave and sick leave shall be made the first day of January, 1971, and provisions relating to holiday leave shall be effective at the time of the enactment of this chapter. (Ord. 1405 § 8, 1971)