California Imposes Small Engine Pollution Rules
April 17, 2007
Senator Diane Feinstein News Release

California’s small engine rule requires new small engines (under 25 horsepower) to be built to reduce smog-causing pollutants, such as hydrocarbons and nitrogen oxides, by 35 percent. The emissions reductions could be achieved by using catalytic converters and other improvements to engine combustion. The State’s small engine rule went into effect in January 2007, following a decision by the EPA to grant California a Clean Air Act waiver in December 2006. The EPA draft rule announced today would effectively implement California’s reduction target nationwide.