Every such oil well shall be properly equipped with a head fitting and shut-off valve capable of withstanding any pressure, which may develop in the well. The shut-off valve shall be maintained in a closed position and secured against unauthorized tampering. Adequate provision shall be provided to allow the installation of a pressure gauge in connection with vapor space of the well.
EXCEPTIONS:
1. The provisions of this section shall not apply to oil wells which are under regular surveillance or the substantial equivalent thereto, such as by reason of drilling or producing of wells or similar operational activities on the same premises.
2. For the purpose of this section, any oil well used or intended to be used solely for subsurface injection into the earth of oil field waste, gas or liquid substances shall be deemed to be in operation when such well is physically connected by means of a suitably employable manifold or piping system, to any oil well or wells or to any other operating equipment wherein the oil well used or intended to be used solely for subsurface injection into the earth of oil field waste, gas or liquid substances is used as an integrated operational part thereof.