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Special Modeling in Support of the Tier 2/Sulfur Analysis for the Proposed Rulemaking
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This web site contains information on Special Modeling in Support of the Tier 2/Sulfur Analysis for on-highway light-duty vehicle and trucks (all pollutants), heavy-duty gasoline vehicles (NOx and VOC), heavy-duty diesel vehicles (NOx and VOC), heavy-duty vehicle (PM, and SOx), nonroad stationary, and other sources. Also, photochemical ozone modeling and toxics modeling as they relate to Tier 2/Sulfur Analysis are found here.
- Highway Exhaust
- Highway Evaporative
- Other/Nonroad
- Photochemical Ozone Modeling
- Toxics Modeling Documentation
- Related Modeling, including MOBILE6 Analyses
Emission Inventories
On-Highway Exhaust Emission Inventories
Light-Duty Vehicles and Trucks (All Pollutants)
- Tier 2 Model and Supporting Files ZIP XLS (1.3MB)
- Brief Description (PDF) (20K)
- Supporting Technical Report: Development of Light-Duty Emission Inventory Estimates in the Notice of Proposed Rulemaking for Tier 2 and Sulfur Standards (PDF) (830K)
Heavy-Duty Gasoline Vehicles (NOx and VOC)
- Updated MOBILE5b Input and Output Files ZIP TXT (10K)
- Brief Description
- Supporting Memorandum: Development of Heavy-duty Gasoline Emissions Inventories for the Tier 2/Sulfur NPRM (PDF) (94K)
Heavy-duty Diesel Vehicles (NOx and VOC)
- Updated MOBILE5b Input and Output Files ZIP TXT (3K)
- Brief Description
- Supporting Memoranda:
Heavy-duty Vehicles (PM and Sox)
- Updated PART5 Model ZIP (160K)
- Input and Output Files Used To Generate Heavy-duty Inventories ZIP TXT (10K)
- Brief Description
- Supporting Memorandum: Updating the PART5 Model (PDF) (26K)
On-Highway Evaporative VOC Emission Inventories (Light-Duty and Heavy-duty)
- MOBILE5b Input and Output Files ZIP TXT (37K)
- Brief Description
- Version of MOBILE5b developed for estimating the effects of Tier 2 control ZIP (435K)
- Supporting Memorandum: A Modified Version of MOBILE5 for Evaluation of Proposed Tier 2 Evaporative Emission Standards (PDF) (28K)
"Other Sources" (nonroad, stationary, and area)
- March 29, 1999: Development of Nonroad, Stationary, and Area Source Emissions for Tier 2/Sulfur NPRM (PDF) (27K)
- April 1999: Draft NONROAD Model used for the Tier 2 Proposed Rule, including updated data files, interface, and technical documentation.
Photochemical Ozone Modeling
- Memo: Exceedance Method Analysis of Photochemical Modeling in support of Tier 2/Sulfur, June 22, 1999 (PDF) (10K, Posted 7/16/99)
- Memo: Additional information concerning photochemical model runs OMS1 and OMS2 supplied at stakeholder request, July 7, 1999 (PDF) (550K, Posted 7/16/99) or 350K ZIP WPD & XLS
- Memorandum: Methodology for Developing Inventory Reductions Used in Ozone Modeling March 16, 1999 (PDF) (49K). Description of how the percent reductions were calculated for OMS1, OMS2, OMS3, and OMS4. Docket A-97-10
- Photochemical Air Quality Simulations in Support of Tier 2/Sulfur March 30, 1999 (PDF) (19K). Provides details of modeling not already given in the Preamble or RIA.
- Chapter 2, "Regional and Urban Scale Modeling Workgroup" OTAG Technical Supporting Document, Part of the write-up for the ROTR. Docket A-96-56, Category II-A-14
- "Supplemental Notice for the Findings of Significant Contribution and Rulemaking for Certain States in the Ozone Transport Assessment Group Region for Purposes of Reducing Regional Transport of Ozone; Proposed Rule," Chapter VII, "Air Quality Assessment of the Statewide Emissions Budgets," Federal Register, Vol. 63, No. 90, May 11, 1998, pages 25953-25967. Description of the preparation of the emission inventory for the 2007 ROTR SNPR (base case for OMS1 and OMS2).
- Development of Modeling Inventory and Budgets for Regional NOx SIP Call (WPD) (350K). EPA Office of Air Quality Planning and Standards, September 24, 1998, Description of the preparation of the emission inventory for the 2007 ROTR Final Rulemaking (base case for OMS3 and OMS4). Docket A-96-56, Category VI-B-10
- "Data tapes containing input and output files for photochemical air quality simulations referenced in the Preamble and RIA of the Tier 2/Sulfur NPRM" March 31, 1999. Cover memo for docket folder containing data tapes and related documents
Subdocuments contained in the same folder: Description of Contents:- Directory Contents for OMS/OMS1_OMS2/emis/SNPR_9596_base directory This directory contains pre-merged emissions for area, mobile, and elevated and low point emissions. The dates used under each episode for Area, Low Point, and Elevated Point represent the Weekday, Saturday, and Sunday emissions used in the modeling.
- Directory Contents for OMS1_OMS2/emis/SNPR_2007_Budget directory This directory contains pre-merged emissions for area, mobile, and elevated and low point emissions.
- Directory Contents for OMS/met directory, containing meteorological files
- Directory Contents for the OMS/OMS3_OMS4/emis/Revised_9596_base directory This directory contains pre-merged emissions for area, mobile, and elevated and low point emissions. The dates used under each episode for Area, Low Point, and Elevated Point represent the Weekday, Saturday, and Sunday emissions used in the modeling.
- Directory Contents for OMS/OMS3_OMS4/emis/Revised_2007_Budget directory This directory contains pre-merged emissions for area, mobile, and elevated and low point emissions. The dates used under each episode for Area, Low Point, and Elevated Point represent the Weekday, Saturday, and Sunday emissions used in the modeling.
- Directory Contents for OMS directory
- Directory Contents for OMS/OMS1_OMS2 directory
- Directory Contents for OMS/OMS1_OMS2/xymap directory, containing ground level ozone output files
- Directory Contents for OMS/OMS3_OMS4 directory
- Directory contents for the OMS/OMS3_OMS4/xymap directory, containing ground level ozone output files
- Directory Contents for the OMS/bio directory, containing input files for biogenic emissions
- Directory Contents for OMS/job_control directory. This directory contains the job control files to perform the OMS model runs
Toxics Modeling Documentation
Air toxics modeling documentation used in the Tier 2/Sulfur Proposed Rule: November 1999 Final Assessment of Motor Vehicle Toxic Emissions and Exposure in Urban Areas and Nationwide
Related EPA Mobile Source Modeling Pages
- Documentation of Analyses done for MOBILE6 Development
- MOBILE6
- MOBILE5
- PART5
- NONROAD
- AP-42
- Remote Sensing & Clean Screening
- Emission Inventories
- Climate Change
- Fuels
For further information or assistance regarding this Web page, please contact the ASD Information Line at (734) 214-4636 or email: asdinfo@epa.gov.