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Q-2, r. 33 - Regulation respecting environmental standards for heavy vehicles
Section 12
Disposition versions
12. No air emission from a diesel-powered heavy vehicle may exceed the opacity percentages listed in the following table, based on the vehicle model year:
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Model year Opacity (%)
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Until 30 April 2011
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1991 and newer 40
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1990 and older 55
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As of 1 May 2011
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1991 and newer 30
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1990 and older 40
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Model year Opacity (%)
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Until 30 April 2011
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1991 and newer 40
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1990 and older 55
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As of 1 May 2011
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1991 and newer 30
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1990 and older 40
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