https://www.greencarcongress.com/2021/03/20210330-sore.html
"Today, operating the best-selling gas-powered commercial leaf blower for one hour emits air pollutants comparable to driving a 2017 Toyota Camry from Los Angeles to Denver. Smog-forming emissions from small engines will surpass those from passenger vehicles this year. We must look beyond transportation if we are to achieve the emissions reductions needed to fight climate change and improve air quality and health in our communities."—Assemblymember Marc Berman
SORE are engines that produce 25hp or less, but emit high levels of air pollutants, including oxides of nitrogen (NOx), reactive organic gases (ROG), and particulate matter (PM). By 2031, NOx and ROG emissions from SORE are projected to be twice those from passenger cars.
AB 1346 directs CARB to develop cost-effective and technologically feasible regulations to phase out the sale of new gas-powered SORE by 2024 or whenever the board determines is feasible. The bill also requires CARB to make funding available for commercial rebates to support the transition to zero-emission SORE.