![[logo] US EPA](https://webarchive.library.unt.edu/eot2008/20081105055914im_/http://www.epa.gov/epafiles/images/logo_epaseal.gif){kind=logo}
Archive - Mobile Source Air Toxics
This web page presents studies and documents on mobile source air toxics that were used to build the March 29, 2001 Final Rule to Control Emissions of Hazardous Air Pollutants from Mobile Sources.
For recent consumer information and regulation and guidance documents, visit the Mobile Source Air Toxics page.
For further information or assistance regarding this web page, contact the Assessment Standards Division (ASD) Information Line, by phone at (734) 214-4636 or email us at asdinfo@epa.gov
NOTE: You will need Adobe Acrobat Reader, available as a free download, to view some of the files on this page. See EPA's PDF page to learn more about PDF, and for a link to the free Acrobat Reader.
Final Assessment of Motor Vehicle Toxic Emissions and Exposure in Urban Areas and Nationwide (November 1999)
- Description of Documents Used in the Tier 2/Sulfur Proposed Rule (5K TXT)
- March 1998 Final Report: Analysis of Carbon Monoxide Exposure for Fourteen Cities using HAPEM-MS3 (posted October 1, 1999)
- Body of Report 225K WPD or 300K PDF (80 pages)
- Appendix A
- County Average Exposures (PDF) (117 pp, 270K)
- District Average Exposures (PDF) (133 pp, 285K)
- Annual Fractiles (PDF) (15 pp, 34K)
- Hour of Day Exposures (PDF) (323 pp, 550K)
- Microenvironmental Concentration and Duration (PDF) (323 pp, 760K)
- Microenvironmental Exposures (PDF) (323 pp, 795K)
- Annual Percentiles (PDF) (15 pp, 24K)
- Appendix B - Maps of the Fourteen Study Areas (PDF) (15 pp, 555K)
- 1997 Final Report: Determination of Annual Average CO Inventories and the Mobile Source Contribution in Selected Areas Using the 1990 OAQPS Trends Data Base (EPA420-R-97-012, posted October 4, 1999)
Full Report with Tables 270K ZIP WPD & XLS or 369K PDF (96 pages) - Analysis of the Impacts of Control Programs on Motor Vehicle Toxic Emissions and Exposure Nationwide
- Peer Review Comments on April 1999 Draft Report
- Comments by NESCAUM (PDF) (42 pp, 160K)
- Comments by University of California, Davis (PDF) (27 pp, 105K)
- Comments by TRJ Environmental (PDF) (9 pp, 30K)
Motor Vehicle-Related Air Toxics Study (EPA 420-R-93-005, April 1993)
- Description (3K TXT)
- Body of report ZIP WPD (522K) or
- Contents, Executive Summary, and Chapters 1-4 (Intro, Scenarios Studied, Emission Factor Methodology, Exposure Methodology)(PDF) (125 pp, 350K)
- Chapters 5-7 (Benzene, Formaldehyde, 1,3-Butadiene)(PDF) (199 pp, 600K)
- Chapters 8-16 (Acetaldehyde, Diesel & Gasoline Particulate Matter, Gasoline Vapors, EPA's Integrated Air Cancer Project, Alternative Fuels, Nonroad Mobile Sources, Initial Cost Considerations, Motor Vehicle Toxics in Title III and Metallic Pollutants)(PDF) (189 pp, 530K)
- Appendices
- Text only of Appendices A - F (61K ZIP WPD)
- A - EPA Work Group Members (PDF) (3 pp, 6K)
- B- Emission Factor Data for Benzene, Formaldehyde, 1,3-Butadiene, and Acetaldehyde ZIP WK1 (272K) (NOTE: To unZip the Lotus spreadsheet files you must use the command PKUNZIP -d AIRTOX03. The -d option creates necessary separate subdirectories) or PDF (59 pp, 270K)
- C - Ambient Monitoring Data for Benzene, Formaldehyde, 1,3-Butadiene, and Acetaldehyde (PDF) (14 pp, 3K)
- D - Time Series Plots for Benzene, Formaldehyde, 1,3-Butadiene, and Acetaldehyde (title page only)(PDF) 3 (1 pg, 3K)
- E - Benzene Unit Risk Estimates Based on 21 Models (PDF) (6 pg, 13K)
- F - Lay Description of the Linearized Multistage Model (PDF) (5 pp, 19K)
- G - Diesel Particulate Emission Factor Inputs (spreadsheets) ZIP WK1 (154K) or PDF (70 pp, 155K)
- H - Unleaded Gasoline Particulate Emission Fractions (spreadsheet) XLS (16K) or PDF (10 pp, 19K)
- Peer Review Comments on Air Toxics Study