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Transportation Air Quality Conformity
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: Data Files and Parameters Used in Latest Conformity Determination - November 2007
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