If the air board really wanted to clean up the air, they would outlaw the leaf blower. Instead, they harass people who burn wood for a cheaper source of heat.
What does the leaf blower accomplish besides blowing grass, leaves, dirt and other pollutants from one person's property to a neighbor's? The neighbor blows it back to them or out in the street. Then cars can run over it and really circulate the air. This is recycling at its California best.
Use of a rake, broom and dust pan would be more beneficial to the environment. No fossil fuel or electricity to power them.