60Determining concentration of air impurity

60 Determining concentration of air impurity

60 Determining concentration of air impurity

(1) The concentration of the air impurity must be determined in accordance with the relevant test method, or relevant monitoring method, for the air impurity, using the relevant averaging period.

(2) For a concentration determined under this section otherwise than for smoke, the concentration must be expressed by reference to the relevant reference conditions for the standard of concentration after determining the following—

(a) the moisture content of the sample, determined in accordance with TM-22,

(b) the temperature and pressure at the sampling position, determined in accordance with TM-2,

(c) if a relevant reference condition is a specified percentage of carbon dioxide—the concentration of carbon dioxide emitted, determined in accordance with TM-24 or CEM-3,

(d) if a relevant reference condition is a specified percentage of oxygen—the concentration of oxygen emitted, determined in accordance with TM-25 or CEM-3.

(3) For a concentration determined under this section for smoke, that is measured as opacity, the concentration must be expressed by reference to the relevant reference conditions for the standard of concentration.