An international service zone shall consist of the following contiguous group of census tracts from the 1990 United States Census: Tract #0416, Tract #0417, Tract #0418, Tract #0419, Tract #0423, Tract #0424, Tract #0426, and Tract #0427. A map of such contiguous census tracts is attached hereto and incorporated herein as Exhibit “ A” . (Ord. M-3441, 1999; Ord. M-3407, 1998)