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EPA proposes approval of new ozone plans for the two of the worst Air Quality Zones in US: California’s San Joaquin Valley and South Coast

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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.

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EPA launches Cleaner Trucks Initiative to update NOx standards for heavy-duty trucks

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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.

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Latest GHG Inventory shows California remains below 2020 emissions target; much steeper rate of GHG reductions required

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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.

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EPA issues ANPR on Clean Trucks Initiative, seeking input from public and stakeholders

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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.

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BP Products to Pay Nearly $180M to Settle Violations at Texas City Refinery; Conversion of Diesel Vehicles to Natural Gas Part of Settlement

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The settlement addresses the company’s noncompliance with a 2001 consent decree and Clean Air Act regulations requiring strict controls on benzene and benzene-containing wastes generated during petroleum refining operations.

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Senate bill would enable sales of E15 and higher ethanol blends year round; RVP waiver

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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.

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Decrease in air pollution associated with decrease in respiratory symptoms among children

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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.

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