United States Environmental Protection Agency Air and Energy Engineering Research Laboratory Research Triangle Park NC 27711 Research and Development EPA/600/S9-91/007 April 1991 Project Summary Proceedings of Two Highway Vehicle Emission Inventory Workshops James H. Wilson, Jr. EPA's Joint Emission Inventory Oversight Group is initiating research projects with the goal of better quanti- fying air pollution emissions in both current and future years. Highway ve- hicles have been found to be important contributors to organic, oxides of ni- trogen, and carbon monoxide emis- sions as well as some hazardous air pollutants, despite the significant emission reductions that have already been achieved on a per vehicle basis. Therefore, EPA is actively investigat- ing research opportunities to improve the state-of-the-art in estimating high- way vehicle emissions. This project was an effort to solicit research ideas from outside EPA using a workshop forum. This Project Summary was developed by EPA's Air and Energy Engineering Research Laboratory, Research Tri- angle Park, NC, to announce key find- Ings of the research project that is fully documented in a separate report of the same title (see Project Report ordering information at back). Introduction The proceedings summarize the high- way vehicle emission inventory research recommendations made by non-EPA per- sonnel with varied backgrounds in trans- portation related air quality issues. These recommendations were compiled from two workshops on highway vehicle emission inventories. The first workshop was held in Washington, DC on July 19 and 20, 1990. The second workshop was held in Sacramento, CA, on August 21, 1990. Conclusions According to the 20 participants at the two workshops, highway vehicle emissions represent an area where many fruitful re- search projects could be initiated. This project resulted in 25 specific highway ve- hicle research recommendations. These recommendations have been sorted into four categories: (1) characterizing per ve- hicle emissions, (2) how vehicles are being used, (3) coordinating emissions and transportation models, and (4) summary issues, or projects that examine the other three issues in aggregate. A major theme at both workshops was the need to independently verify emission estimates and design the validation/verifi- cation methods so that they parallel emis- sion inventory efforts. Printed on Recycled Paper ------- J. Wilson is with E.H. Pechan and Associates, Inc., Springfield, VA 22151. Carl T. Ripberger is the EPA Project Officer (see below). The complete report, entitled "Proceedings of Two Highway Vehicle Emission Inventory Workshops,"(OrderNo. PB91-168432/AS; Cost: $15.00, subject to change) will be available only from: National Technical Information Service 5285 Port Royal Road Springfield, VA 22161 Telephone: 703-487-4650 The EPA Project Officer can be contacted at: Air and Energy Engineering Research Laboratory U.S. Environmental Protection Agency Research Triangle Park, NC 27711 United States Environmental Protection Agency Center for Environmental Research Information Cincinnati, OH 45268 BULK RATE POSTAGE & FEES PAID EPA PERMIT No. G-35 Official Business Penalty for Private Use $300 EPA/600/S9-91/007 ------- |