Browse by Discipline
Air Quality > Conformity
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Legislation Document Date Contact(s) Fixing America's Surface Transportation (FAST) Act 2015 12/04/2015 -
The Office of Policy
The Safe, Accountable, Flexible, Efficient Transportation Act: A Legacy for Users (SAFETEA-LU) 8/10/2005 -
The Office of Policy
Clean Air Act - Section 176(c) - Karen Perritt 202-366-9066, Office of Planning, Environment, & Realty (HEP)
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Regulation Document Date Contact(s) Complete Transportation Conformity Rule April, 2012 - Cecilia Ho 202-366-9862, Office of Planning, Environment, & Realty (HEP)
2006 PM2.5 and PM10 Standards and Designations - Karen Perritt 202-366-9066, Office of Planning, Environment, & Realty (HEP)
2008 8-hour Ozone Standards and Designations - Karen Perritt 202-366-9066, Office of Planning, Environment, & Realty (HEP)
2012 PM2.5 and PM10 Standards - Karen Perritt 202-366-9066, Office of Planning, Environment, & Realty (HEP)
40 CFR 51 - Cecilia Ho 202-366-9862, Office of Planning, Environment, & Realty (HEP)
40 CFR 93 - Cecilia Ho 202-366-9862, Office of Planning, Environment, & Realty (HEP)
Baseline Year for the Baseline Year Test (in 40 CFR 93.119) - Cecilia Ho 202-366-9862, Office of Planning, Environment, & Realty (HEP)
- David Kall 202-366-6276, Office of Planning, Environment, & Realty (HEP)
National Ambient Air Quality Standards (NAAQS) - Cecilia Ho 202-366-9862, Office of Planning, Environment, & Realty (HEP)
Nonattainment Designations under the 1997 8-Hour Ozone and PM2.5 Standards - Karen Perritt 202-366-9066, Office of Planning, Environment, & Realty (HEP)
Transportation Conformity Rulemakings - Karen Perritt 202-366-9066, Office of Planning, Environment, & Realty (HEP)
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Guidance Document Date Contact(s) 2017 FHWA Carbon Monoxide Categorical Hot-Spot Finding July 2017 - Karen Perritt 202-366-9066, Office of Planning, Environment, & Realty (HEP)
2014 FHWA Carbon Monoxide Categorical Hot-Spot Finding February 2014 - Karen Perritt 202-366-9066, Office of Planning, Environment, & Realty (HEP)
Implementing the 2008 Ozone National Ambient Air Quality Standard (NAAQS) Frequently Asked Questions May 2013 - Cecilia Ho 202-366-9862, Office of Planning, Environment, & Realty (HEP)
- Karen Perritt 202-366-9066, Office of Planning, Environment, & Realty (HEP)
Frequently Asked Questions on the Transportation Conformity Lapse Grace Period May 2012 - Cecilia Ho 202-366-9862, Office of Planning, Environment, & Realty (HEP)
Transportation and General Conformity Frequently Asked Questions April 2011 - Karen Perritt 202-366-9066, Office of Planning, Environment, & Realty (HEP)
PM2.5 Project-Level Conformity and Hot-Spot Analyses FAQs 9/19/2007 - Cecilia Ho 202-366-9862, Office of Planning, Environment, & Realty (HEP)
Interim Guidance for Implementing the Transportation Conformity Provisions in SAFETEA-LU February 2006 - Cecilia Ho 202-366-9862, Office of Planning, Environment, & Realty (HEP)
- Karen Perritt 202-366-9066, Office of Planning, Environment, & Realty (HEP)
Transportation Conformity Alert to FHWA Divisions on PM2.5 Project-Level Conformity November 2005 - Cecilia Ho 202-366-9862, Office of Planning, Environment, & Realty (HEP)
Revised FTA Procedures for a Conformity Lapse April 2003 - Cecilia Ho 202-366-9862, Office of Planning, Environment, & Realty (HEP)
Guidance for Qualitative Project Level "Hot-Spot" Analysis in PM10 Nonattainment and Maintenance Areas September 2001 - Cecilia Ho 202-366-9862, Office of Planning, Environment, & Realty (HEP)
- Karen Perritt 202-366-9066, Office of Planning, Environment, & Realty (HEP)
Transportation Conformity Alert August 2000 - Cecilia Ho 202-366-9862, Office of Planning, Environment, & Realty (HEP)
Memorandum of Understanding between DOT and EPA on Transportation Conformity April 2000 - Cecilia Ho 202-366-9862, Office of Planning, Environment, & Realty (HEP)
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Information Document Date Contact(s) Revocation of the 1997 Primary Annual Particulate Matter (PM2.5) National Ambient Air Quality Standard (NAAQS) and Implementation of the 2012 PM2.5 NAAQS April 2017 - Cecilia Ho 202-366-9862, Office of Planning, Environment, & Realty (HEP)
- Karen Perritt 202-366-9066, Office of Planning, Environment, & Realty (HEP)
Transportation Conformity: A Basic Guide for State and Local Officials February 2017 - Cecilia Ho 202-366-9862, Office of Planning, Environment, & Realty (HEP)
- Karen Perritt 202-366-9066, Office of Planning, Environment, & Realty (HEP)
Court Decision on Transportation Conformity Rule October 2006 - Cecilia Ho 202-366-9862, Office of Planning, Environment, & Realty (HEP)
Transportation Conformity and the New Air Quality Standards - Frequently Asked Questions June 2005 - Cecilia Ho 202-366-9862, Office of Planning, Environment, & Realty (HEP)
- Karen Perritt 202-366-9066, Office of Planning, Environment, & Realty (HEP)
Limited Maintenance Plans September 2001 - Cecilia Ho 202-366-9862, Office of Planning, Environment, & Realty (HEP)
Analyzing Exempt Projects in the Conformity Process February 1995 - Karen Perritt 202-366-9066, Office of Planning, Environment, & Realty (HEP)