A. Fire extinguishing equipment shall be provided and maintained in accordance with the requirements of the Fire Chief of the City.
B. On every drilling or producing oil or gas well there shall be maintained not less than two 2½-gallon, foam-type fire extinguishers or the equivalent thereof, as approved by the Fire Chief.
C. There shall be available to any lease pumper or maintenance men engaged in servicing operations on the apparatus, in connection with any producing oil well, extinguishers within a distance of 100 feet or less of such well.