A building or premises may be used for the following purposes in the I-1 light industrial district if a conditional use permit for that use has been obtained in conformance with the requirements of §§ 158.370 through 158.382:
   (a)   Asphalt mixing plant, ready-mix concrete plant;
   (b)   Extraction of rock, sand and gravel in conformance with § 158.280;
   (c)   Airport/heliport;
   (d)   Any conditional use listed in the C commercial district; and
   (e)   Broadcast tower.
(1992 Code, App. F, § 10.04)  (Ord. 10-06, passed 1-23-2006)