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Isolated Rural Non-Attainment Area
Western Nevada County is designated as an "isolated rural
non-attainment area" under the 8-hour ozone National Ambient Air Quality
Standards (NAAQS), effective June 15, 2004.
Isolated rural non-attainment areas
are required to demonstrate air quality conformity when federal approval is
required on a regionally significant non-exempt transportation project. A
regional emission analysis must show that the project, in addition to the other
regionally significant federal and non-federal transportation projects, does not
create new violations of the NAAQS, increase the severity of NAAQS, or delay
timely attainment.
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