Contractor means any person including a subcontractor who acts as or for a property owner or permit holder, public or private, or any person engaged in excavation activity. Excavate or Excavation means the movement or removal of earth using mechanized equipment or blasting, and includes augering, backfilling, digging, ditching, drilling, grading, plowing, pulling-in, ripping, scraping, trenching and tunneling or either of them. Hazardous to the Public within the meaning of Section 11-132 relating to concentration of natural gas, and the reporting requirement thereunder, the phrase means any condition which may cause an interruption of essential services and, in addition, may result in death or injury to persons or property due to destruction of, disruption of, or damage to an underground piping system. Permittee (Permit Holder) means the actual person to whom a permit is issued under the provisions of the County Building Code or Road Ordinance, or both, the term also means and includes, as being directly accountable under the terms of this Ordinance, the contractor, builder, developer, excavator, or other person who engages in excavation work covered by this Ordinance. Person means any individual, partnership, association, corporation and includes any trustee, receiver, assignee, or personal representative thereof. Utilities means any person, firm, or corporation which furnishes or transports by means of an underground conduit any of the materials or services as defined under the term "utility line(s)." Utility Line(s) means any underground conduits and its related facilities including pipe or cable, by which there is furnished or transported any of the following materials or services: Flammable, natural, toxic, or corrosive gas; Petroleum, petroleum products, and hazardous liquids; Electricity; or Communications.