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4. Was the airport activity level specified so that all types of emissions (direct and
indirect, including temporary) could be quantified and each project alternative
(including the “no build” alternative) adequately evaluated?
5. Were airport emission inventories computed for all types of emissions (direct
and indirect, including temporary) and each project alternative (including the “no
build” alternative)?
6. Was one of the project alternatives identified as the proposed project?
B1.2 Indirect Source Review
7. Does the State require indirect source review? If yes, continue to item 8. If no,
an indirect source permit is not required.
8. If the State requires indirect source review, does the airport activity exceed the
State’s indirect source review thresholds? If yes, complete an indirect source
analysis and obtain an indirect source permit if required. If no, an indirect
source permit is not required.
B1.3 Transportation Conformity
9. Is any part(s) of the proposed project related to transportation plans, programs,
and projects developed, funded, or approved under title 23 U.S.C., the proposed
project must meet the procedures and criteria of the Transportation Conformity
Rule.
B1.4 General Conformity
10. Is the airport in a nonattainment area (NAA) or maintenance area (MA) for any
criteria pollutant (CO, NO2, PM-10, ozone)? If yes, continue to item 11. If no, a
conformity assessment is not required; proceed to item 25 (NAAQS analysis).
B-6
11. Is the proposed project exempt from general conformity or presumed to conform
for general conformity (see 40CFR§93.153)? If exempt, a conformity
determination is not required. If presumed to conform, proceed to item 16. If no,
continue to item 12.
12. Are indirect emissions from action reasonably foreseeable and can the Federal
agency practically control and maintain control over them due to a continuing
program responsibility of the Federal agency? If yes, total project emissions
equal direct plus indirect emissions (including temporary emissions). If no, total
project emissions equal direct emissions (including temporary emissions).
13. For the proposed project, were the annual net emissions of the project calculated
for:
a. total emissions (including temporary) of no-build and proposed build
alternatives,
b. the year of maximum project emissions,
c. the attainment year, or furthest forecast year for the maintenance plan, and
d. SIP emission budget years?
14. Was the analysis based on the latest planning assumptions derived from
population, employment, and travel data acquired from the local metropolitan
planning organization (MPO), and the latest and most accurate emission
estimation techniques applied (unless written approval is obtained)?
15. Do the annual net emissions of the proposed project exceed the general
conformity threshold levels (see 40CFR§93.153(b))? If yes, proceed to item 17.
If no, continue to item 16.
16. Are the annual net emissions of the proposed project regionally significant
(exceed 10% of the area total emissions)? If yes, continue to item 17. If no, a
conformity assessment is not required for the project; proceed to item 25
(NAAQS assessment).
17. For the proposed action, were the applicable pollutant concentrations computed
by dispersion modeling?
18. Were appropriate background pollutant concentrations included in the dispersion
analysis?
19. Do airport pollutant concentrations, when combined with the background
pollutant concentration, exceed NAAQS? If yes, continue to item 20. If no,
action conforms; continue to item 23 (conformity determination).
20. Is the proposed project specified in the applicable state implementation plan
(SIP) or is there a sufficient emissions budget in the SIP to accommodate the
action’s emissions? If yes, the project conforms, coordinate with state/local
agencies; proceed to item 23 (conformity determination). If no, continue to item
21.
21. Were local and state air quality agencies and EPA consulted for an alternative
conformity determination? If yes, the project conforms, proceed to item 23
(conformity determination). If no, continue to item 22.
22. Were emissions mitigated or offset or the project redesigned to reduce direct,
indirect, or construction/temporary emissions such that the project does conform
with the provisions of the SIP? If yes, proceed to item 23 (conformity
B-7
determination). If no, the project must be redefined and reevaluated such that it
does conform to the SIP.
23. Has a conformity determination been prepared? If it is a draft conformity
determination, was:
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Air Quality Handbook航空质量手册(70)
