The US Environmental Protection Agency (EPA) sets National Ambient Air Quality Standards (NAAQS) for six "criteria" pollutants that are particularly damaging to human health. In December 2012, the EPA announced that it would tighten the limit on one criteria pollutant, fine particulate matter (PM...
EPA proposes to retain NAAQS for particulate matter. https://www.epa.gov/newsreleases/epa-proposes-retain-naaqs-particulate-matter Clark, L. P., Millet, D. B. & Marshall, J. D. National patterns in environmental injustice and inequality: outdoor NO2 air pollution in the United States. PLo...
We also investigate the change in PM2.5with respect to the change in CO2in 2050 across race and ethnicity groups (see SI Table S-6). If the ratio is less than one, it indicates that CO2is reduced faster than PM2.5. We can use this ratio to understand the rate of PM2.5reductions acro...
Honda has said it will introduce a 4-cylinder clean-diesel engine into the US market within the next three years. The company has patented a plasma-assisted catalyst system for NOxreduction that may play into its product plans. (Earlier post.) Honda has said that it will focus on hybrids ...
“smoke,” contributes over 40% of primary emissions of particulate matter with diameters smaller than 2.5 microns (PM2.5) in the US (US EPA, 2017) and is responsible for a majority of non-anthropogenic exceedances in National Ambient Air Quality Standards (NAAQS) for PM2.5 (David et al.,...
https://www.epa.gov/sites/default/files/2020-07/documents/naaqs-pm_ria_final_2006-10.pdf 1989: SW1 Incinerator started up on Jog Rd:https://www.swa.org/Facilities/Facility/Details/Renewable-Energy-Facility-1-9 1994: Acreage Cancers begin showing up:https://www.typeinvestigations.org/investi...
EPA Introduction The National Ambient Air Quality Standard (NAAQS) for ground-level ozone is an outdoor air regulation established by the U.S. Environmental Protection Agency (EPA) under the Clean Air Act. Ground-level ozone is a gas that occurs both naturally and forms due to chemical ...
Chamber of Commerce v. EPA Challenge to EPA rule revising PM NAAQS Cases/ Energy and Environment/ Forum U.S. Court of Appeals for the D.C. Circuit Case Status Pending Docket Number 24-1051 Share Cookie Notice By clicking “Accept All”, you agree to the storing of cookies on your device...
UnitedStates, 90million people live areaswhere yearly average mass concen- aerodynamicdiameter less than 2.5 (PM2.5 NationalAmbient Air Quality Standards (NAAQS) (EPA, 2002, 2004). average,about half inorganicspecies sulfate (SO ammonium(NH presentwork. Formation effectiveregulatory measures ...
This paper discusses the approach that was taken to gain agreement on the determinations from both the USEPA and the NCDAQ. The paper also describes several innovative and evolving methodologies that were used to demonstrate compliance with the National Ambient Air Quality Standards (NAAQS) for ...