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Title: MONITORING AND MODELING OF RESUSPENDED ROADWAY DUST NEAR URBAN ARTERIALS
Accession Number: 00193362
Record Type: Component
Availability: Find a library where document is available Abstract: The probability that resuspended roadway dust plays a predominant role in many violations of the ambient particulate standards is now widely accepted. Quantification of this effect is needed before control strategies are developed. In addition, there is increasing concern that strategies should, for reasons of health, also address the respirable fraction of total particulates. This paper describes a twofold approach to the problem of identifying the sources of particulates within the city of Philadelphia and presents selected results from the study. One approach used a sampling program designed to investigate the contribution of traffic-related emissions. Measurements were made using conventional high-volume air samplers at four heights near an intersection and at rooftop level on either side of the main street. The U.S. Environmental Protection Agency dichotomous sampler and the GCA ambient particulate monitor were used to discriminate between respirable and nonrespirable particulates. The second approach used diffusion modeling techniques to calculate the contribution of source categories. Also, a test was conducted to measure the effectiveness of street washing in reducing ambient particulate levels. The results suggest that about one-fourth of the particulates measured at the roof of the Health building were vehicle related, but approximately one-half of the particulates measured at the top of a trailer at a busy intersection were from these sources. Based on a comparison of data from the dichotomous sampler and the high-volume sampler, only about one-fourth of the particulates measured by the high-volume sampler at the trailer were respirable. Ambient particulate levels increased dramatically immediately after street washing. /Author/
Supplemental Notes: Sponsored by Committee on Transportation and Air Quality Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved.
Monograph Title: Monograph Accession #: 01411509
Authors: Bradway, Robert MRecord, Frank ABelanger, William EPagination: pp 25-32
Publication Date: 1978
Serial: Media Type: Digital/other
Features: Figures
(8)
; References
(2)
; Tables
(2)
TRT Terms: Uncontrolled Terms: Old TRIS Terms: Subject Areas: Highways; Maintenance and Preservation
Files: TRIS, TRB
Created Date: May 26 1979 12:00AM
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