Proposals to test AERMOD Source Types RLINE and RLINEXT; DUE July 13, 2020

The purpose of this message is to request your assistance in soliciting proposals from State Departments of Transportation (DOTs), to test two new source types: RLINE and RLINEXT in AERMOD, an air pollution dispersion model, using real or hypothetical project examples and input data, and to create case studies.  Please forward this information to the appropriate staff at your State DOT.

Please see the this linked document for more information regarding this solicitation.

Agencies interested in participating in this effort are asked to submit a proposal to Victoria Martinez ([email protected]) and Cecilia Ho ([email protected]) with FHWA’s Office of Natural Environment and copy their respective FHWA Division Office by July 13, 2020.

An informational webinar for potential applicants will be held on June 2, 2020 at 1:00 ET. To attend, please visit https://connectdot.connectsolutions.com/newsourcetypetesting/.

Virtual Hearings for EPA’s Proposed Decision on the PM NAAQS

The Environmental Protection Agency (EPA) is announcing that virtual public hearings will be held for the proposed action titled, “Review of the National Ambient Air Quality Standards for Particulate Matter,” which was published in the Federal Register on April 30, 2020. The hearings will be held May 20 and 21, 2020. Based on its review of the air quality criteria and the national ambient air quality standards (NAAQS) for particulate matter (PM), the EPA is proposing to retain both the primary and secondary PM standards, without revision.

For more details, please see the FR announcement regarding the hearings: https://www.govinfo.gov/content/pkg/FR-2020-05-05/pdf/2020-09480.pdf

FHWA Air Quality and Sustainable Transport Highlights

FHWA-Highlights March-April 2020

The purpose of this message is to inform you that the latest issue of the FHWA Air Quality and Sustainable Transport Highlights is now available.

The Highlights provide the latest news and information on transportation related air quality and sustainability activities, including information on transportation conformity, resiliency, and other related activities.

Items of interest in this issue include:

  • Arizona Department of Transportation released a report of Arizona’s Asset Management, Extreme Weather, and Proxy Indicators.
  • FHWA published a series of five spotlight profiles on CMAQ-funded projects to highlight recent efforts by transportation agencies and transit providers to reduce emissions and mitigate congestion.

Past issues of the Air Quality and Conformity Highlights are available at: http://www.fhwa.dot.gov/environment/air_quality/conformity/highlights/

Past issues of the Sustainable Transport Newsletter are available at: https://www.fhwa.dot.gov/environment/sustainability/newsletter/index.cfm

Review of the National Ambient Air Quality Standards for Particulate Matter

On April 30, 2020, the Federal Register published the Environmental Protection Agency’s (EPA’s) proposed decision on review of the national ambient air quality standards (NAAQS) for particulate matter (PM):

Summary: Based on the EPA’s review of the air quality criteria and the NAAQS for PM, the Administrator has reached proposed decisions on the primary and secondary PM NAAQS. With regard to the primary standards meant to protect against fine particle exposures (i.e., annual and 24- hour PM2.5 standards), the primary standard meant to protect against coarse particle exposures (i.e., 24-hour PM10 standard), and the secondary PM2.5 and PM10 standards, the EPA proposes to retain the current standards, without revision.

Comments must be received on or before June 29, 2020.

Link to the proposed action: https://www.govinfo.gov/content/pkg/FR-2020-04-30/pdf/2020-08143.pdf