[Amended 3-10-1970 by Ord. No. 70-2C-3; 9- 26-1972 by Ord. No. 72-ZC-38; 6-25-1991 by Ord. No. 91-ZC-259; 6-25-1991 by Ord. No. 91- ZC-260; 5-12-1992 by Ord. No. 92-ZC-278; 12-15-1992 by Ord. No. 92ZC-291; 1-26-1993 by Ord. No. 92-ZC-297; 2-23-1993 by Ord. No. 93-ZC-300; 12-6-1994 by Ord. No. 94-ZC-19]