Green Car Congress

SEPTEMBER 9, 2011

US EPA Region 9 8-hour ozone trends, 1979-2000. These State Implementation Plans (SIPs) are the roadmaps to meeting the 1997 8-hour ozone National Ambient Air Quality Standards (NAAQS) of 0.08 In 1997, EPA first established the 8-hour ozone standard, which replaced the older 1-hour ozone standard (0.12

Ozone 236

Ozone EPA Pollution 2002 236

Green Car Congress

FEBRUARY 5, 2020

CO 2 and NO x certification test data for heavy-duty diesel engines certified from 2002 through 2019. NO x is a precursor for both ground level ozone and secondary PM 2.5 which are regulated under the National Ambient Air Quality Standards (NAAQS) because of their adverse effects on human health and the environment.

Emissions 291

Emissions Diesel Engine 2010 291

Green Car Congress

MAY 20, 2010

Approximately $28 million is available through the program to fund truck replacements or exhaust retrofits statewide. Previously, the maximum amount of a voucher was $35,000; Trucks with 2002 and older engines may qualify for a newer truck. VIP is part of the state’s overall plan to cut toxic diesel emissions 85 percent by 2020.

California 186

California Diesel Emissions Cleaner 186