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Emission Inventory Information & Preparation
This web site contains "Procedure for Emission Inventory Preparation - Volume IV: Mobile Sources" (document number EPA 420-92-009). Also found are several EPA papers that describe the "Effects of Raising Speed Limits on Vehicle Emissions."
- Procedures for Emission Inventory Preparation - Volume IV: Mobile Sources (December 1992) (from National Transportation Library of the US Department of Transportation) | PDF Version (240 pp, 3.1MB, EPA 420-R-92-009)
- Estimating Commercial Marine Emission Inventories
- Effects of Raising Speed Limits on Vehicle Emissions
- Related EPA Information
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.
Estimating Commercial Marine Emission Inventories
EPA's current marine inventory guidance document (Procedures for Emission Inventory Preparation, Volume IV: Mobile Sources, EPA420-R-92-009, December 1992) uses modeling techniques based on fuel consumption that were common at that time. Since then, we have developed new marine inventory techniques as part of our rulemaking process for emission standards for commercial marine diesel engines. These techniques are more similar to the techniques we use for mobile sources generally, and rely on emission factors, population estimates, and usage characteristics. States and other stakeholders are encouraged to refer to the inventories we prepared for our commercial marine diesel engine standards for use in developing their own inventories. Chapter 3 of the Final Regulatory Impact Analysis (EPA420-R-09-019, December 2009) for EPA's 2010 rule, "Control of Emissions from New Marine Compression-Ignition Engines at or Above 30 Liters per Cylinder", contains our inventory estimates and a description of how those estimates were produced for Category 3 commercial marine vessels. Chapter 3 of the Final Regulatory Impact Analysis (EPA420-R-08-001a, May 2008) for EPA's 2008 rule, "Control of Emissions of Air Pollution from Locomotives and Marine Compression-Ignition Engines Less Than 30 Liters per Cylinder ", contains our inventory estimates and a description of how those estimates were produced for Category 1 and 2 commercial marine vessels.
- Category 3 Marine Diesel Engines - Final Emission Standards Final Regulatory Support Impact Analysis (PDF) (527 pp, 9.7MB, EPA420-R-09-019, December 2009)
- Final Regulatory Impact Analysis: Control of Emissions of Air Pollution from Locomotives and Marine Compression-Ignition Engines Less Than 30 Liters per Cylinder (PDF) (739 pp, 10MB, EPA420-R-08-001a, May 2008)
Effects of Raising Speed Limits on Vehicle Emissions
- May 1997 OPPE Memo
- March 1997 Report (PDF) (170K)
- January 1996 OTAQ Memo
- November 1995 OPPE Memo
- 1995 Pechan report
October 1996 Local Transportation data in Mobile Source Inventories, Final 173K ZIP WP5
Related EPA Information:
- Vehicle & Engine Emission Modeling Software
- AP-42 Emission Factors: Compilation of Air Pollutant Emission Factors
- State and Local Resources
- Automobiles and Light Trucks
- Heavy-duty Highway Engines (Truck and Bus Emission Standards)