B.C. Regulation 346/210 approved December 3, 2010 under the B.C. Environmental Management Act amended the Cleaner Gasoline Regulation with respect to the prohibition for sale of gasoline in the lower Fraser Valley during the period July 16 and ending on August 14 of each year unless the vapour pressure of the gasoline is less than or equal to the sum of the maximum of vapour pressure referred to in a specific standard.

For further information see British Columbia Gazette, Part II, December 14, 2010, p.1-2.