Arizona Administrative Code › Title 18 - ENVIRONMENTAL QUALITY › Chapter 2 - DEPARTMENT OF ENVIRONMENTAL - QUALITY AIR POLLUTION CONTROL › Article 14 - CONFORMITY DETERMINATIONS › Section R18-2-1430 - Procedures for Determining Regional Transportation-related Emissions

Current through Register Vol. 30, No. 28, July 12, 2024
A. The following
				are general requirements for determining regional transportation-related
				emissions:
1. The regional emissions analysis
				for the transportation plan, TIP, or project not from a conforming plan and TIP
				shall include all regionally significant transportation projects expected in
				the nonattainment or maintenance area, including FHWA or FTA projects proposed
				in the transportation plan and TIP and all other regionally significant
				transportation projects which are disclosed to ADOT or the MPO as required by
				R18-2-1405. Projects
				which are not regionally significant are not required to be explicitly modeled,
				but VMT from such projects shall be estimated in accordance with reasonable
				professional practice. The effects of TCMs and similar projects that are not
				regionally significant may also be estimated in accordance with reasonable
				professional practice.
2. The
				emissions analysis may not include for emissions reduction credit any TCMs
				which have been delayed beyond the scheduled date until such time as
				implementation has been assured. If the TCM has been partially implemented and
				it can be demonstrated that it is providing quantifiable emission reduction
				benefits, the emissions analysis may include that emissions reduction
				credit.
3. Emissions reduction
				credit from projects, programs, or activities which require a regulation in
				order to be implemented may not be included in the emissions analysis unless
				the regulation is already adopted by the enforcing jurisdiction. Adopted
				regulations are required for demand management strategies for reducing
				emissions which are not specifically identified in the applicable
				implementation plan, and for control programs which are external to the
				transportation system itself, such as tailpipe or evaporative emission
				standards, limits on gasoline volatility, inspection and maintenance programs,
				and oxygenated or reformulated gasoline or diesel fuel. A regulatory program
				may also be considered to be adopted if an opt-in to a federally enforced
				program has been approved by EPA, if EPA has promulgated the program (if the
				control program is a federal responsibility, such as tailpipe standards), or if
				the CAA requires the program without need for individual state action and
				without any discretionary authority for EPA to set its stringency, delay its
				effective date, or not implement the program.
4. Notwithstanding subsection (A)(3), during
				the transitional period, control measures or programs which are committed to in
				an implementation plan submission as described in
				R18-2-1418
				through R18-2-1420, but which has not received final EPA action in the form of
				a finding of incompleteness, approval, or disapproval, may be assumed for
				emission reduction credit for the purpose of demonstrating that the
				requirements of R18-2-1418 through
				R18-2-1420
				are satisfied.
5. A regional
				emissions analysis for the purpose of satisfying the requirements of
				R18-2-1422
				through
				R18-2-1424
				may account for the programs in subsection (A)(4), but the same assumptions
				about these programs shall be used for both the Baseline and Action
				scenarios.
6. Ambient temperatures
				shall be consistent with those used to establish the emissions budget in the
				applicable implementation plan. Factors other than temperatures, for example
				the fraction of travel in a hot stabilized engine mode, may be modified after
				interagency consultation according to
				R18-2-1405 if the
				newer estimates incorporate additional or more geographically specific
				information or represent a logically estimated trend in such factors beyond the
				period considered in the applicable implementation plan.