A print of the appropriate tax map, City map or the equivalent, at a scale of not more than one inch equals 500 feet, with the boundaries of the entire property proposed to be eventually subdivided indicated thereon, and covering the area with a half-mile radius thereof. This key map shall be attached to all copies of the sketch, or the sketch may be superimposed upon the key map. (Ord. 39-81. Passed 10-7-81.)