You may be required to comply with this standard if you intend to operate an airport lessee company, or if you are the occupier of an airport site. You are required to measure the level of air pollution and maintain the level under the acceptable limit. This standard is used as a method of air sampling to ascertain whether the amount of carbon monoxide in the air is under the acceptable limit. These pollutants are from any stationary activity that involves the burning of fuel. It sets out a method for the determination of carbon monoxide in ambient air using a direct-reading instrument.