| 12/19 |
Ambient Near-Road Mobile Source Air Toxics Concentrations in the United States |
Analysis of near-road MSAT monitor concentrations and the potential contribution from roadways. |
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| 12/19 |
Near-Road Particulate Pollution: PM2.5 Black Carbon, and Ultrafine Particles at U.S. Near-Road Monitoring Sites |
Analysis of near-road PM2.5, black carbon, and ultrafine particle monitor concentrations and the potential contribution from roadways. |
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| 10/19 |
Influence of Roadway Emissions on Near-Road PM2.5: Monitoring Data Analysis and Implications for Determining Transportation Projects of Local Air Quality Concern (POAQC) |
Identifies the influence of roadways on near-road PM2.5 emissions |
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Aviation Emissions and Air Quality Handbook |
Explains Federal Aviation Administration (FAA) air quality guidelines and procedures for projects involving civilian airports and air force bases when FAA is the lead federal agency |
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Determining Conformity of Federal Actions to State or Federal Implementation Plans (40 CFR 93) |
EPA-administered code implementing Section 176(c) of the CAA (42 USC 7401) and the related requirements of 23 USC 109(j) and establishing policy, criteria and procedures to demonstrate and ensure project conformity with an implementation plan developed pursuant to Section 110 and Part D of the CAA |
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Supplement to Jan. 28, 2008 Transportation Planning Requirements and their Relationship to NEPA Process Completion (02/09/11) Distribution Memo |
Provides a detailed description of how transportation planning relates to the NEPA process (i.e., project-level consistency and conformity) |
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Transportation Conformity: A Basic Guide for State and Local Officials |
Provides FHWA's high-level overview of transportation conformity and how requirements relate to transportation investments and the implications on metropolitan transportation plans, transportation improvement programs and transportation projects |
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Transportation Conformity Brochure |
FHWA answers to basic questions about transportation conformity |
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Transportation Conformity Guidance for Quantitative Hot-Spot Analyses in PM2.5 and PM10 Nonattainment and Maintenance Areas |
EPA guidance for quantitative PM hot-spot analyses for projects of “air quality concern” in PM nonattainment/maintenance areas where a hot-spot analysis is started post December 2012 |
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Guidelines for Modeling Carbon Monoxide from Roadway Intersections |
EPA guidance on how to model CO at roadway intersections for CO hot-spot analyses |
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Using MOVES in Project-Level Carbon Monoxide Analyses |
EPA guidance for using its mobile vehicle emission simulator (MOVES) emission model rather than the older MOBILE emissions model in CO hot-spot analyses where the analysis was started post December 2012 |
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FHWA Technical Advisory for Preparing and Processing Environmental and Section 4(f) Documents T 6640A |
FHWA guidance on preparing environmental documents outlining the requirements for performing a CO TAQA and disclosing construction emissions under NEPA |
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Interim Guidance Update on Mobile Source Air Toxic Analysis in NEPA Memorandum |
Provides an update to FHWA guidance on MSAT analyses |
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A Methodology for Evaluating Mobile Source Air Toxic Emissions Among Transportation Project Alternatives |
Detailed guidelines on performing quantitative MSAT analysis |
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Frequently Asked Questions (FAQ) Conducting Quantitative MSAT Analysis for FHWA NEPA Documents |
Provides FHWA recommendations for project sponsors using MOVES for NEPA MSAT analysis concerning defining the scope of MOVES work, gathering input data, and post-processing results |
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