An assessment of highway construction project emissions was performed at five study sites in Dallas/Fort Worth, Texas. Four large scale, multi-year construction projects and one small pavement maintenance project were observed. Several types of information were collected from field trucks, materials trucks, and construction equipment. Vehicles were classified according to MOBILE definitions, and the remaining equipment was classified according to AP-42 definitions. Engine starts and stops were recorded from field trucks, as well as the fuel type used and the initial odometer reading. Materials trucks and construction equipment were observed and their activities recorded. The activity measures recorded were engine starts, operating hours, and the frequency and duration of throttles (transient events). Activity from field trucks, and the frequency and duration of throttles (transient events). Activity from field trucks, materials trucks, and construction equipment was used to estimate the emissions produced at each study site. These emissions estimates were then placed in perspective by comparing their equivalent vehicle miles of travel (VMT) for the general vehicle fleet in the region. An additional comparison was made by expanding the highway construction activity and resulting emissions over the two-county region and comparing this to the emissions generated from on-road mobile sources.
Activity and Emissions Associated with Highway Construction Projects: Case Studies in Dallas/Fort Worth, Texas
1998
148 pages
Report
Keine Angabe
Englisch
Air Pollution & Control , Highway Engineering , Highway construction , Emissions , Vehicle air pollution , Air quality , Air pollution emission factors , Constructive vehicles , Case studies , Air pollution sources , Road construction , Construction equipment , Estimates , Vehicle mileage , Texas , Construction activities , Dallas(Texas)
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