(a) Declaration of Purpose. Public safety is hereby declared to require that the uninterrupted operation of the aircraft and petroleum industries and of utilities supplying water, gas and electricity be protected by preventing the intrusion upon the properties thereof of idle, curious or malicious persons and of persons whose presence thereon is not necessary, and by prohibiting the loitering about such places by persons capable of inflicting harm to or of impeding the use of such vital industries and utilities.
(b) Posting – Manner of, Prescribed. It shall be the duty of each person, firm, corporation, governmental agency, department or instrumentality and of each board, commission or department of this City, which has possession and control, or which has the right to possession or control of any of the facilities, plants and utility properties enumerated in Subsection (c) hereof, to post at each entrance to any structure devoted to any use so enumerated, at each entrance to any fenced or enclosed area devoted to any such use, and at intervals not more than three hundred feet around any area devoted to such use, substantial signs not less than one square foot in area, displaying prominently the words, “TRESPASSING – LOITERING – FORBIDDEN BY LAW”; provided, however that any public waiting room, dining room, office or other portion of any structure or premises to which general public access is required in the normal use and operation thereof or where materials are delivered to or received by the public, need not be so posted.
The “posted boundary” of any area shall be a line running from sign to sign, and such line need not conform to the legal boundary or legal description of any lot, parcel or acreage of land.
(c) Posting – Where Required. The places required to be so posted are the following:
1. Every airport, and every plant, field and structure used for the manufacture, assembling or testing of aircraft;
2. Every tank-farm, refinery, compressor-plant, or absorption plant, marine terminal, pipe line pumping station and reservoir, used for the bulk treatment, bulk handling or bulk storage of petroleum or petroleum products;
3. Every reservoir, dam and pumping station of a public water system;
4. Every reservoir, dam, generating plant, receiving station and distributing station of a utility furnishing electrical energy to the public;
5. Every gas generating plant, compression plant, gas holder and gas tank used for the production, distribution or bulk storage of gas for public use.
(d) Posting – When Optional. Any plant, facility, structure or area devoted to any purpose incident to the production, bulk treatment, bulk transportation or bulk storage of petroleum or petroleum products, or incident to the production, transmission or distribution of gas or electricity for public use, or incident to the treatment, storage or distribution of water for public use, may likewise be posted by the owner or operator in the manner hereinabove described.
(e) Trespassing – A Misdemeanor. When any such premises is posted as provided in this section, it shall be unlawful for any person to go upon or to remain upon any place within the posted boundary of any such premises, or to enter or to remain in any such posted structure, without having upon his person the express written consent of the person, firm, corporation, department or agency lawfully in possession or control thereof.
(f) Loitering – A Misdemeanor. It shall be unlawful for any person to loiter in the immediate vicinity of any premises posted as provided in this section while having in his possession any explosive, or any cutting tool or device, or any substance or device of whatever character capable of doing harm or damage to any structure, machinery, equipment or other property of a similar or dissimilar character, installed or located upon such posted premises or area.
Nothing in this ordinance shall be deemed to prohibit any activity for the purpose of engaging in any organizational effort on behalf of any labor union, agents or members thereof, and/or employee groups employed or formerly employed in any place of business or manufacturing establishment mentioned herein, or for carrying on the normal activities of labor unions.