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California ARB approves air quality plan for South Coast Air Basin ahead of 2023 deadline; calls for Federal action

The California Air Resources Board (CARB) voted to approve an updated plan for the South Coast Air Basin aimed at further cutting smog-forming emissions to attain the federal 8-hour ozone standard. The air quality plan is the most stringent in the nation.

In order to address some of the country’s highest levels of smog, the plan includes new strategies to improve air quality, ranging from a new statewide locomotive regulation to more stringent off-road diesel engine standards. The plan also includes current efforts to transform California’s vehicle fleet to zero-emission.

Combined, these measures will provide an additional 25 tons per day of NOx reductions that can be credited toward the 108 tons of NOx per day reduction that is still needed to attain the federal 8-hour ozone standard by 2023. The remaining reductions are reasonably available from further action at the federal level, CARB said.

CARB estimates controls on these sources for which the federal government is primarily responsible—e.g., interstate trucks, planes, trains and ships—could lower NOx emissions in the South Coast by more than 60 tons per day. Even while calling for more action by the federal government to reduce pollution, in taking its action, CARB underscored that it will continue to use its authority to the fullest extent to achieve more reductions from pollution sources it regulates.

Fed Action Needed

The plan approved today reflects more hard work by California air quality regulators to use all the tools and authority at our disposal to achieve emissions reductions needed to protect people in the South Coast who are exposed to unhealthful air. But it is imperative that US EPA move quickly to do its job and reduce pollution from the sources it has the responsibility to regulate.

To meet the 80 parts per billion ozone standard in the South Coast, all levels of government must do their part. The updated plan serves as a call to action. California is prepared to coordinate with US EPA on all efforts to focus on real actions to reduce emissions.

—CARB Chair Mary D. Nichols

The US EPA first established the 80 parts per billion 8-hour ozone standard (80 ppb averaged over 8 hours) in 1997. Since then, CARB and the South Coast Air Quality Management District have together achieved NOx reductions of 900 tons per day. Sources under state control have been reduced by between 70% and 90%, while sources under federal jurisdiction have been reduced by only 16%, and some federal sources of emissions are growing.

While much progress has been made to clean up the air in the South Coast Air Basin—home to more than 17 million people in Los Angeles, San Bernardino, Orange, and Riverside counties—the air basin still has the worst smog in the country.

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SJC

Southern California could use EV deliver trucks,
lots of deliveries made from online purchases.

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