To limit the probability that an inadequate quality of outdoor air will lead to the inadequate control of particulate matter and gases, which could lead to their accumulation in excessive concentrations, which could lead to negative effects on the air quality of indoor spaces, which could lead to harm to persons.
To limit the probability that the failure to remove air contaminants at their point of origin will lead to their accumulation in excessive concentrations, which could lead to negative effects on the air quality of indoor spaces, which could lead to harm to persons.
To limit the probability that the inappropriate design of heating, ventilating or air-conditioning systems will lead to the spread of contamination to other occupied parts of buildings, which could lead to negative effects on the air quality of indoor spaces, which could lead to harm to persons.