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Client Description:

Manufacturers of Emission Controls Association (MECA) is a non-profit industry association that provides technical information on emission control technology. MECA’s members include leading manufacturers of a variety of emission control equipment for automobiles, trucks, buses, off-road vehicles, non-road engines, and stationary sources.

Client Goals:

  • Gain a better understanding of health and technical issues related to ultrafine particulate (UFP) matter emissions from light-duty vehicles, heavy-duty vehicles, and non-road engines
  • Develop strategies to reduce UFP emissions from new and existing engines

Black exhaustBraving the smog

GNA Strategy:

  • Research existing public health, epidemiological, and technical studies and reports
  • Interview leaders in industry, government, and the nonprofit sectors
  • Develop a model to estimate the emissions reductions gained using various technologies and to calculate the monetized value of the associated health benefits
  • Provide a report on our key findings and recommendations

Project Results:

  • MECA released the GNA-authored report, “Ultrafine Particulate Matter and the Benefits of Reducing Particle Numbers in the United States,” in July 2013: The report outlined the health impacts of UFPs from gasoline and diesel engines; available technical solutions available to address concerns about increasing UFP emissions from new engines; new regulatory responses in Europe to limit the number of UFPs; and policy recommendations to help the US Environmental Protection Agency (EPA), the California Air Resources Board, and other regulators achieve the maximum environmental and health benefits from their current and upcoming on-road and off-road emission standards.  The report can be downloaded from the MECA website at:
  • Identified the value of public health benefits gained by using existing high-efficiency control technologies that exceed current US EPA emission standards: GNA estimated the value of these additional health benefits at $19-$43 billion over the life of the current heavy-duty on-road fleet, and further estimated that the value of the health benefits of using these control technologies (such as particulate filters) could exceed $133 billion if used on most on-road and non-road engines.