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In response to the Clean Air Act, the Environmental Protection Agency has established health-based National Ambient Air Quality Standards (NAAQS) for six air pollutants: particulate matter (PM10 and PM2.5), ozone, carbon monoxide (CO), sulfur dioxide, nitrogen dioxide, and lead. Areas that fail to meet the NAAQS are designated “non-attainment” and are required to develop plans to come into compliance with the standards.
Transportation conformity is a way to ensure that Federal funding and approval goes to those transportation activities that are consistent with the NAAQS. Conformity applies to transportation plans, transportation improvement programs (TIPs) and projects funded or approved by the Federal Highway Administration (FHwA) or the Federal Transit Administration (FTA) in areas that do not meet or previously have not met air quality standards for various pollutants. A conformity determination demonstrates that the total emissions projected for a plan or program are within the emissions limits (“budgets”) established by the State Implementation Plan (SIP), and that transportation pollution control measures are implemented in a timely fashion. The Eugene-Springfield region has only two pollutants for which air quality conformity must be determined: particulate matter of less than 10 microns (PM10) and carbon monoxide (CO). The region is currently classified as non-attainment for PM10. Since it has been established that emissions from motor vehicles are not a significant contributing factor to overall PM10 emissions, regional transportation conformity is not required. Air quality conformity for PM10 must be demonstrated by Lane Regional Air Protection Agency (LRAPA). There has not been an exceedance of PM10 standards since 1987. In 1994, the Eugene-Springfield area was classified as in attainment of the air quality standard for the pollutant carbon monoxide (CO) the majority of which is emitted by motor vehicles. The region is currently in the required 20 year maintenance period during which continued compliance with the Clean Air Act has to be demonstrated. There has not been an exceedance of the CO standards since 1980. Transportation conformity determinations must be made by the Central Lane MPO at least every three years, or when transportation plans or TIPs are updated. A public comment period and a public hearing are held before the MPO policy board adopts a conformity determination.
Project Level Conformity. Hot spot CO analysis is required for all non-exempt projects within the AQMA. Further, within Lane County, LRAPA requires an indirect source permit for new construction or modifications of certain road, airport and parking facilities. Hot spot PM10 analyses are required for all projects within the Eugene-Springfield urban growth boundary. Downloads: Draft Conformity Determination - 2035 Regional Transportation Plan and FFY12-15 Metropolitan Transportation Improvement Program (approved by MPO Policy Board on 12 January 2012; implementation awaiting Federal approval). Complete Document, with maps and appendices (5.6 MB PDF  )Report (without maps and appendices, 2.5MB PDF )Maps: Map 3. 2012-2015 Projects (2.2 MB PDF )Map 4. 2035 Roadway Projects (1.3 MB PDF )Map 5. 2035 Bike/Ped Projects (1.3 MB PDF )Map 6. 2035 Transit Projects (2.0 MB PDF )Map 7. Nodal Development (1.6 MB PDF )Appendices Appendix A. Supporting Documents (1.4 MB PDF )Appendices B-D. Project lists and AQ Model I/O (1.4 MB PDF )Appendix E. Exempt Projects and Functional Classification (1.6 MB, PDF )Appendix F. Maintenance Plan (185 KB PDF )Appendix G-H. Public Involvement (323 KB, PDF )Conformity Determination - FFY10-13 Metropolitan Transportation Improvement Program and 2031 Regional Transportation Plan - October 2010 (approved 17 November 2010) Complete Document, with maps and appendices (6.4 MB PDF )Report (without maps and appendices, 534KB PDF )Maps: Map 3. 2010-2013 Projects (563 KB PDF )Map 4. 2031 Roadway Projects (780 KB PDF )Map 5. 2031 Bike/Ped Projects (952 KB PDF )Map 6. 2031 Transit Projects (911 KB PDF )Map 7. Nodal Development (538 KB PDF )Appendices Appendix A. Supporting Documents (1.3 MB PDF )Appendices B-D. Project lists and AQ Model I/O (528 KB PDF )Appendix E. Exempt Projects and Functional Classification (1.7 MB, PDF )Appendix F. Maintenance Plan (254 KB PDF )Appendix G. Notifications of Public Comment Opportunity (162 KB, PDF )Data Files and Parameters Used in Latest Conformity Determination - October 2010
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