The report presents an overview of the conformity requirements contained in the legislation and subsequent guidance, and documents the technical procedures used in the analysis including travel demand forecasting, emissions calculation procedures and impacts of transportation emission reduction measures. The analysis demonstrates that mobile source emissions, estimated for the TIP and for each analysis year of the long range plan, adhere to all carbon monoxide, ozone season volatile organic compound and nitrogen oxide, and fine particle (PM 2.5) pollutants (direct 2.5 and precursor nitrogen oxide) emissions budgets established by the Metropolitan Washington Air Quality Committee (MWAQC), which are either approved or under review by the EPA. Additionally, the “action scenario” (forecast year) emissions for fine particles are not greater than the base year 2002 emissions, thus satisfying the requirement for pollutants without an established budget. These results provide a basis for a determination of conformity of the 2010 CLRP and the FY2011-2016 TIP.

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Full Report with Appendicies (10.5 MB)

Appendix A - Air Quality Conformity Scope of Work

Appendix B - List of Project Inputs (1.9 MB)

Appendix C - Interagency and Public Involvement Process (1.6 MB)

Appendix D - Documentation of Emission Factor Development (4.3 MB)

Appendix E - Documentation of Mobile Source Emission Calculations (post-processor)

Appendix F - Vehicle-related Emissions Calculations

Appendix G - Auto Access Emissions Calculations

Appendix H - Bus Emissions Estimation

Appendix I - TERMs Implementation reports