8.144. The fuelling area in a motor fuel dispensing outlet must be impermeable to petroleum products over a surface extending at least 3 m in front and 1.5 m to the sides of each motor fuel dispenser measured from the centre of the dispenser. Despite the foregoing, that requirement does not apply to a fuelling area1° for off-highway vehicles or farm equipment;
2° to be used for a single period of less than one year;
3° situated in a designated location; or
4° the tanks of which have a capacity lower than 2,500 litres.
The impermeability referred to in the first paragraph may be obtained using a reinforced concrete apron or an asphalt layer treated to make it resistant and impermeable to petroleum products.