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 Source: EPA.
Green Car Congress
NOVEMBER 14, 2018
The CTI will include a future rulemaking that will update the existing NO x standard which was last set in 2001 while also streamlining compliance and certification requirements. EPA last revised NO x standards for on-highway heavy-duty trucks and engines in January 2001. The Agency is not required by statue to update the standard.
Green Car Congress
JANUARY 7, 2020
However, 100 million people live in areas of nonattainment for ozone and particulate matter (PM), and according to EPA estimates, heavy-duty vehicles will continue to be one of the largest contributors to NO x emissions—a precursor of ozone and PM formation—from the transportation sector in 2025.
Green Car Congress
OCTOBER 23, 2020
Per capita GHG emissions in California have dropped from a 2001 peak of 14.0 in 2018 (2000-2018 average year-over-year increase is 6.8%), continuing the increasing trend as they replace Ozone Depleting Substances (ODS) being phased out under the 1987 Montreal Protocol. tons per person to 10.7 tons per person in 2018, a 24% decrease.
Green Car Congress
MARCH 3, 2017
Each year, the Environmental Protection Agency (EPA) regulates RVP for gasoline and gasoline-ethanol blended during the summer ozone season from 1 June until 15 September. The purpose of the regulation is to reduce evaporative emissions of volatile organic compounds (VOC) that contribute to ground-level ozone.
Green Car Congress
APRIL 18, 2016
The study involved children (age range, 5-18 years) from 3 groups, and was conducted during the 1993-2001, 1996-2004, and 2003-2012 years in 8 Southern California communities. Kiros Berhane, Ph.D., A model was used to estimate the association of changes in pollution levels with bronchitic symptoms.
Green Car Congress
SEPTEMBER 25, 2016
These were shown to be ozone-depleting, however, and were targeted for phasing out under the 1987 Montreal Protocol. China fully embraced HFC-134a in 2001 when it implemented its obligations under the 1987 Montreal Protocol. These older systems used chlorofluorocarbons (CFC-12) as the refrigerant gas.
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