Q-2, r. 4.1 - Clean Air Regulation

Full text
184. A primary copper production plant in a category listed in the following table must not, as of the date prescribed for that category, emit a percentage of sulphur into the atmosphere, in the form of sulphur dioxide, greater than the maximum percentage of input sulphur set out in the table for that category:

Category of plant Maximum % Date of application
of input
sulphur emitted

Existing plant 25 30 June 2011

10 30 June 2012

New plant 5 30 June 2011

For the purposes of the first paragraph, input sulphur is the sulphur contained in the total feed, including the sulphur contained in the fuel. The percentage is calculated on an annual basis using the monthly production data average.
In addition, a primary copper production plant must not emit sulphur dioxide into the atmosphere in such manner that the average concentration of the contaminant measured in the atmosphere at each sampling station exceeds the limits set out in the following table:

Limits for sulphur dioxide in the atmosphere

Concentration Sampling time

ppm µg/m3

0.21 550 Average over 1 hour

0.11 288 Average over 24 hours

0.02 52 Annual average on a 1-hour
sampling basis

Despite the third paragraph, a primary copper production plant built or put into operation before 30 June 2011 may exceed the limit of 0.21 ppm or 550 µg/m3 prescribed by the table above, without exceeding the limit of 0.34 ppm or 890 µg/m3.
The primary copper production plant referred to in the fourth paragraph may exceed the limit of 0.34 ppm or 890 µg/m3 prescribed by that paragraph by a maximum of 0.2% of the samples taken over a 1-year period per sampling station, provided that the concentration of sulphur dioxide never exceeds 0.5 ppm or 1,310 µg/m3.
O.C. 501-2011, s. 184.