In all cases where there is an existing curb and gutter or sidewalk on the street, the applicant for a permit shall provide a safety island along the entire frontage of the property, except for the permitted roadways. On the two ends and street side of each such island shall be constructed a concrete curb, the height, location and structural specifications of which shall be approved by the building inspector. (Ord. 523 § 1(part), 1989)