Transportation Conformity and Development of Emission Budgets.
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Transcript of Transportation Conformity and Development of Emission Budgets.
![Page 1: Transportation Conformity and Development of Emission Budgets.](https://reader036.fdocuments.net/reader036/viewer/2022082816/56649cc45503460f9498df74/html5/thumbnails/1.jpg)
Transportation Conformity and Development of Emission Budgets
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We will cover the following topics:
CAA Transportation Conformity Regulations
Development of Emission Budgets
What are our objectives?
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What Is Conformity?
• Established by the Clean Air Act
• Requires governments to evaluate emissions from planned federal or federally funded projects BEFORE they are built
• Applies in ozone, CO, PM-10 and NO2 areas designated as nonattainment or maintenance
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Conformity: Transportation vs. General
• Transportation conformity applies to federal highway and transit actions
• General conformity applies to all other federal actions (e.g. airports and railroads)
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Transportation Conformity: What pollution does it address?
StationarySources
Transportation/On-Road Mobile Sources
AreaSources
Off-Road Mobile Sources
Transportation Conformity…covers just one piece of the pie...
• Transportation conformity addresses air pollution from on-road mobile sources.
• On-road mobile sources are emissions created by cars, trucks, and transit.
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What Transportation Actions are Subject to Conformity?
• Transportation plans (20-year timeframe)
• Transportation improvement programs (TIP) (3-year timeframe)
• “Federal” projects
– projects receiving federal funding
– projects receiving FHWA/FTA approval
• Regionally significant State projects are partially affected
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Transportation Conformity: A Link Between Air Quality and Transportation
Planning
State Implementation Plan (SIP)
Transportation Plan andTransportation Improvement
Program (TIP)
Conformity
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SIP Elements
• Inventory of emissions estimates for each sector (stationary, area, mobile)
• Air quality modeling
• Demonstration of SIP’s purpose
• Specific list of controls
• Contingency measures (maintenance areas)
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• SIPs contain motor vehicle emissions budgets (“budgets”)
• SIP budgets based on area’s motor vehicle inventory and control measures
• Budgets important for conformity because used in regional emissions analysis
• Budget test: emissions from planned transportation system < budget– budget = ceiling on emissions of that pollutant /
precursor
SIP MV Budgets
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Adequacy Review of Budgets
• SIP budgets must be adequate before used for conformity
• Conformity rule (93.118(e)(4)) describes adequacy criteria– these criteria are similar to those for SIP
approval• Positive adequacy finding does not guarantee
approvability of SIP
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Adequacy Criteria
Governor EndorsementPublic Hearing Interagency consultation and full documentation EPA concerns addressedControl measures achieve air quality goals (RFP,
attainment, maintenance)
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Adequacy Criteria
Emissions budget(s) clearly identified and precisely quantified in the SIP
Budget is consistent with emissions inventory/control measures
Revisions to previously submitted SIPs are explained
EPA will review public comment from state’s public hearing
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Adequacy Process
• Approximately 90 day process• State submits SIP to EPA • EPA announces receipt of SIP on website, 30-day public
comment period started• EPA makes adequacy/inadequacy finding
• Respond to any comments
• Send letter to state
• Post finding on web
• Issue a Federal Register notice (FRN)
• Finding effective 15 Days after FRN in most cases