Transportation Conformity Reference Guide

Exhibit 8 Text

Regional Air District/Regional Councils of Government (COGs), Metropolitan Planning Organizations (MPOs), State departments of transportation (DOTs)

Conducts modeling analysis; determines attainment target; possible paths
Assembles emissions inventory; prepares forecasts; calculates future emissions reduction shortfall
Develops initial control measure package
Writes and revises draft plan
Conducts local workshop/hearing process
Adopts plan

State DOTs/State Air Agency

Provide technical, policy, legal, and strategic advice to districts/COGs, MPOs
Through interagency consultation process, comment on major policy issues and measures
Review and approves final plan; submits to US EPA as SIP revision

US EPA

Issues guidelines/requirements
Assists in SIP preparation/adopt Federal control strategies
Issues findings of failure to implement and failure to submit
Approves/Disapproves SIP

There is two-way interaction between "Writes and revises draft plan" and "Through interagency consultation process, comment on major policy issues and measures" as well as between "Through interagency consultation process, comment on major policy issues and measures" and EPA's approval process.

Source: Adapted from California Air Resources Board. (Please note: many States do not have local or regional air districts or agencies. The State air agency will likely have a greater role in SIP preparation in these States.)

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