§ 9.24.030 POSTING—WHERE PERMITTED.
   The places which may be posted as provided in § 9.24.020 are the following:
   (A)   Every airport, and every plant, field and structure used for the manufacturing, assembling or testing of aircraft;
   (B)   Every tank farm, refinery, compressor plant or absorption plant, marine terminal, pipeline pumping station and reservoir, used for the bulk treatment, bulk handling or bulk storage of petroleum or petroleum products;
   (C)   Every reservoir, dam, pumping station, aqueduct, main, canal or pipeline, of a public water system;
   (D)   Every reservoir, dam, generating plant, receiving station, distributing station and transmission line of a company or agency furnishing electrical energy;
   (E)   Every gas generating plant, compressor plant, gas holder, gas tank and gas main used for the production, storage and distribution of gas;
   (F)   Every plant or vital part thereof or other principal property essential to rendering telephone or telegraph service;
   (G)   Every radio broadcasting central plant or station;
   (H)   Every railroad bridge or tunnel;
   (I)   Every sanitary sewer system, disposal plant, pipeline or other principal property used as a part of the system of sewage removal or disposal;
   (J)   Every plant for the bulk storage of dynamite, giant powder, gun powder or other explosive.
(`83 Code, § 9.24.030)