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  1. Off-Road Small Spark-Ignition Engine Emission Regulations - SOR/2003-355 (Section 1)
    •  (1) The following definitions apply in these Regulations.

      diurnal emissions

      diurnal emissions  means evaporative emissions that occur as a result of the venting of fuel tank vapours during daily temperature changes while the engine is not operating. (émissions diurnes)

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