WASHINGTON, D.C.—From lawn mowers and weed trimmers, to personal watercraft and speedboats, gas-powered engines will soon contribute to healthier and cleaner air for Americans. The Environmental Protection Agency (EPA) has set strict new standards for gas-powered lawn equipment and marine engines, enhancing public health by substantially reducing the amount of gas fumes, carbon monoxide, hydrocarbons and smog-forming pollutants emitted from a wide range of engines. The regulations will take effect in 2010 and 2011. “EPA’s new small engine standards will allow Americans to cut air pollution as well as grass,” said EPA Administrator Stephen L. Johnson.