NEPA review. Upon finalization, a federal agency must make available comments and responses  received/rendered on the Draft within 30 days of issuing the Final Conformity Determination.  As a means of adding clarity to the General Conformity process, t he FAA (in cooperation with  the EPA) has published guidance on the topic. This document is entitled and summarized follows:  Another component of the Conformity Rule is called Transportation Conformity. Transportation  Conformity applies to "regionally-significant" highway or transit projects that are developed,  funded, or approved by the  FHWA or FTA in nonattainment and maintenance areas. 105  A  "regionally significant" project is a transportation project serving regional transportation needs  and would normally be included in the modeling of a metropolitan area’s transportation network.  In the case of an airport,  these regionally-significant roadway or transit projects outside the  airport boundary will likely require Transportation Conformity analysis . This is most directly  accomplished by demonstrating that these projects  are included in the regional emissions  analysis for a transportation plan or TIP.  Using a question and answer format, this document provides information on the General  Conformity  Rule,  its  interpretation  and  application  as  it  pertains  projects/actions.  • General Conformity Guidance for Airports: Questions and Answers. 104  8.1.4.  FAA Guidance  8.2. Transportation Conformity  Aviation Emissions and Air Quality Handbook  104 EPA,  General Conformity Guidance for Airports: Questions and Answers,  September 25, 2002,  http://www.epa.gov/ttn/caaa/conform/airport_qa.pdf.  105 EPA,  Transportation Conformity,  http://www.epa.gov/OMS/stateresources/transconf/.  77$_{ }$