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Last Updated: Thursday, April 26, 2012 8:07 AM
Conformity References and News
Announcements are courtesy of various conformity working group members. Most links on this page are to sites external to Caltrans.
PDF files require Acrobat Reader software from Adobe; DOC and XLS files require recent (generally 2000 version or later) Microsoft Office or compatible software, or Word or Excel viewer software from Microsoft. DOCX and XLSX files require Microsoft Office 2007 or later, or compatible software.
Note: PDF files may have been converted from word processing or spreadsheet formats supplied by Conformity Working Group members or others, for consistency of presentation and accessibility. PDF files should retain the print formatting of the original document. Files in other formats may not follow the original documents print formatting, and are provided for content accessibility only.
Electronic Mail List
The Statewide Conformity Working Group email list has moved to the Caltrans email lists web site. List subscriptions can be managed directly by users at that site rather than by sending emails to the group chair. See: http://lists.dot.ca.gov/mailman/listinfo/statecwg
KEY TRANSPORTATION CONFORMITY REFERENCES
Key Conformity Web Sites
EPA's Conformity Web Site: http://www.epa.gov/otaq/stateresources/transconf/index.htm
Federal Highways' conformity web site: http://www.fhwa.dot.gov/environment/air_quality/conformity/
Conformity Rule References
Section 176(c) of the Clean Air Act (42 USC 7506(c))
(January 2008, PDF file)
with updates per SAFETEA-LU, maintained by EPA
Consolidated Conformity Rule
(March 2010, PDF file)
maintained by EPA.
An online version of the Transportation Conformity rule is available in the experimental "eCFR" section at GPO Access (all
).
PM Hot Spot Guidance (updated 12/29/2010)
Qualitative Analysis Guidance was published on EPA web site 3/29/2006. Quantitative analysis guidance was published in the Federal Register on 12/20/2010, replacing the qualitative (emission analysis) procedures for projects of concern.
- Guidance
(2010 Guidance announced in Federal Register on 12/20/2010 replaces 2006 Guidance for detailed analysis)
- Extracted page from 2006 guidance: examples of projects that are not Projects of Concern (PDF)
- FHWA June 2009 Clarification regarding PM hot spot analysis (FHWA web site
) - applies to analysis based on the 2006 Guidance. - FHWA FAQs

- Presentations from 6/7/06 "webinar" presented by FHWA and EPA (all PDF files). EPA and FHWA plan to present training during the first half of 2011 regarding the new procedures.
- CE Conformity Checklist (MS Word) at Caltrans Standard Environmental Reference (SER) Forms & Templates web site include basic findings regarding PM hot spot analysis. For non-CE projects in areas subject to conformity requirements use the Air Quality Conformity Analysis Annotated Outline (MS Word) from the SER web site.
- SCAG Transportation Conformity Working Group web site
(see Project-Level Conformity section)
- PM Hot Spot Interagency Review Form (MS Word) is used to present projects for interagency consultation in SCAG and several other MPOs.
EPA Web Page with Baseline Years for Various NAAQS (3/22/2010)
EPA has posted a web page listing the conformity analysis baseline years for various standards. See: http://www.epa.gov/otaq/stateresources/transconf/baseline.htm. ![]()
FHWA CONFORMITY WEB TRAINING NOW AVAILABLE (7/1/2009)
A short training session entitled “What is Transportation Conformity?” is now available from FHWA as an on-demand webinar.This session was developed by the FHWA Resource Center Air Quality Technical Services Team in coordination with the Office of Human and Natural Environment. You can access the training at this link: http://fhwa.na3.acrobat.com/whatisconformity/. Handouts are available for download at the same site.
The training will provide an understanding of the basics of transportation conformity. It provides a general overview of the transportation conformity process and its major requirements. It is intended for transportation and air quality practitioners who are new to transportation conformity, those looking for a refresher, or others who only need a brief overview of the rule. The session is approximately 27 minutes long.
SIP Sanctions Clocks in California
EPA does not maintain a public summary of sanctions clocks. Caltrans and FHWA lists are maintained on a staff-time-available basis.
A good description of how "sanctions" under the Clean Air Act work is at the FHWA Environmental web site
. If highway sanctions go into effect in a nonattainment area (cutting off highway funding), a conformity lapse also occurs (cutting off other transportation funding). Otherwise, there is little connection between the sanctions process and conformity. The exception/exemption lists for transportation projects under sanctions and conformity are very different.
EPA Region IX Contact List
PDF file only. Current as of January 2007.
NEWS ITEMS
Sanctions Clocks List Updated
(4/26/12) List
updated with latest action (EPA stayed/deferred clocks for a SJV rule). Note Imperial County listing - as discussed at the March meeting, highway sanctions appear likely to happen there in August.
FHWA will not APPROVE REGIONAL conformity determinations done with EMFAC 2007 after 12/31/2012
FHWA sent letters (typical letter
) to California MPOs stating that they will not make regional conformity determinations after 12/31/2012 that are based on the planning assumptions contained in EMFAC 2007. Only EMFAC 2011's planning assumptions will be acceptable after that time. This is based on the general requirement that planning assumptions be not more than 5 years old. The letters were not sent directly to Caltrans, and did not explicitly address project-level conformity.
There is no practical method for retrofitting EMFAC 2011's fleet and other planning assumptions to EMFAC 2007.
Based on past practice, project-level conformity based on EMFAC 2007 where work was started before EPA makes EMFAC 2011 available should be approvable if it happens within 3 years of starting work; however, FHWA may be planning a more rapid transition based on an email. Transition to EMFAC 2011 for long-lead conformity work should start as soon as EPA makes it available if not before (with interagency consultation approval). FHWA cannot, however, make a conformity determination based on EMFAC 2011 before EPA makes it available, so it's best not to get too far ahead.
EPA releases final PM10/2.5 Quantitative Hot Spot Analysis Guidance (12/29/2010)
On December 20, 2010, notice of EPA's final release of the quantitative PM hot spot guidance was published in the Federal Register (text and PDF versions
). Publication starts a 2-year grace/phase-in period for use of the new emission models (MOVES in most of the country, EMFAC 2007 in California) and the new procedures. EPA and FHWA will deliver training during the first half of 2011 regarding the new procedures.
This guidance replaces the 2006 guidance document, and qualitative (emission) analysis based cannot be started for Projects of Concern after 12/20/2012. Proponents of Projects of Concern that will not have final NEPA action before the end of the 2-year grace period should consider doing or re-doing PM hot spot analysis using the new procedures. Criteria for determining whether a project is a Project of Concern needing detailed analysis have not changed.
For more information, see the PM Hot Spot Guidance item in the References section above, which has been updated to refer to EPA's current guidance and web pages.
EPA Publishes Final Rule for PM2.5 and PM10 Amendments (3/22/10)
From EPA:
The final rule entitled, "Transportation Conformity Rule PM2.5 and PM10 Amendments" (aka "PM Amendments rule") was signed by the Administrator on March 10, 2010 and will be published in the Federal Register on March 24, 2010. You can find the signed version and a factsheet about the final rule on our website at this location: http://www.epa.gov/otaq/stateresources/transconf/conf-regs.htm. ![]()
As a reminder, conformity requirements apply for the 2006 PM2.5 NAAQS by December 14, 2010. On its effective date of April 23, the PM Amendments final rule will supersede the November 2009 Interim Guidance
. The final rule's requirements for the 2006 PM2.5 NAAQS areas are consistent with the interim guidance; however, note that the final rule establishes 2008 as the baseline year for the 2006 PM2.5 areas that use the baseline year test.
June 15, 2009 - FHWA CLARIFICATION DOCUMENT REGARDING PM HOT SPOT ANALYSIS
From FHWA by email:
On March 29, 2006, the Environmental Protection Agency (EPA) and the Federal Highway Administration (FHWA) issued joint guidance on how to perform qualitative hot-spot analyses in PM2.5 and PM10 nonattainment and maintenance areas titled “Transportation Conformity Guidance for Qualitative Hot-spot Analysis in PM2.5 and PM10 Nonattainment and Maintenance Areas” (March 2006 guidance) (http://www.fhwa.dot.gov/environment/conformity/pmhotspotguidmemo.htm
). The guidance provides information for State and local agencies to meet the PM2.5 and PM10 hot-spot analysis requirements established in the March 10, 2006, final transportation conformity rule (71 FR 12468). Since issuing the March 2006 guidance, a lawsuit was filed challenging a project’s conformity determination, including the project’s PM2.5 hot-spot analysis that relied on “Method A” (comparison to another location with similar characteristics). Method A is described in question 4.1 of the March 2006 guidance. As part of a settlement agreement on that lawsuit (Environmental Defense, et al. v. USDOT, et al., No. 08-1107 (4th Cir., dismissed Nov. 17, 2008)), FHWA agreed to issue a clarification on a specific schedule, in coordination with EPA, to the March 2006 guidance. This clarification does not supersede the March 2006 guidance or the March 10, 2006, final transportation conformity rule; it only further explains how to implement the existing guidance and the hot-spot analysis requirements in the final rule. The clarification also does not create any new requirements and does not serve as guidance for PM2.5 and PM10 quantitative hot-spot analyses.
FHWA sent an email and the draft clarification on February 10, 2009, to certain transportation stakeholders and environmental interests groups for review and comment before FHWA finalized the guidance clarification. FHWA did not receive any comments during the comment period.
Copies of the Final Clarification and the March 2006 guidance are attached. The final Clarification will be posted on FHWA's website at http://www.fhwa.dot.gov/environment/conform.htm
next week. I encourage you to share this final document with your State and local transportation and air quality agencies.
The referenced documents can be downloaded from this site as PDF files:
January 7, 2009 - Updated Conformity Guidance on Use of Latest Planning Assumptions
The Federal Highway Administration has issued updated guidance on use of the latest planning assumptions
for transportation conformity determinations. The document updates and supersedes guidance issued in January 2001 based on changes implemented in the Environmental Protection Agency’s July 1, 2004, final conformity rule.
April 17, 2008 - FHWA NEPA-RTP-TIP Guidance
FHWA circulated a memo (PDF file) in February 2008 that appears to change how projects must be listed in the RTP and TIP before environmental and preliminary engineering work starts. A prior (2003) FHWA memo also still applies (PDF file
).
FHWA noted in a March meeting (from CFPG meeting notes):
This issue pertains to Planning and the relationship to the information that needs to be in the FTIP. If the project is programmed in the TIP, but is not fully funded in the RTP, you must have at least an environmental process/study funded in the RTP. This actually allows more flexibility, especially for the earmarks. This allows you to get near the end of the environmental process before full funding for the project is required in the RTP. There must be an indication of the project in the Plan or some reference to the project if leading to NEPA document. This may have conformity implications if a project is in PE in the TIP and considered a study in the RTP – conformity will be required when additional funds are added in the RTP.
December 11, 2006 - AASHTO Center for Environmental Excellence Air Quality Section
The AASHTO Center for Environmental Excellence
web site has added an Air Quality section with good quick summaries of a number of transportation-related air quality issues including Conformity. A good list of links to agencies and relevant documents is included.
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