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Main Title Philadelphia Roadway Study.
Author Burton, R. M. ; Suggs, J. C. ;
CORP Author Environmental Monitoring Systems Lab., Research Triangle Park, NC. Data Management and Analysis Div.
Year Published 1984
Report Number EPA-600-4-84-070;
Stock Number PB84-226927
Additional Subjects Roads ; Particle size ; Standards ; Air pollution ; Sites ; Mass ; Sampling ; Particles ; Concentration(Composition) ; Fines ; Wind(Meteorology) ; Total suspended particulates ; Air pollution sampling ; Federal register ; Philadelphia(Pennsylvania)
Library Call Number Additional Info Location Last
NTIS  PB84-226927 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 43p
Abstract The Philadelphia Roadway Study was conducted to determine the horizontal and vertical extinction profiles of particles generated by vehicles, including fine (0-2.5 micrometers), coarse (2.5-15 micrometers), and total (0-15 micrometers) size fractions in the area surrounding a major roadway. Particulate concentration profiles were characterized to a horizontal distance of 175 m downwind and to a height of 15 m above ground (at five and 25 m downwind) with the primary objective of estimating the influence of a nearby roadway on ambient particulate mass concentration levels. The dilution gradients for concentrations of fine, coarse, and total mass and fine lead particles at two m height are described empirically as a function of downwind distances from the highway using logarithmic equations. Wind speed had a substantial influence on the particulate mass concentration levels both upwind and downwind while the limited range of traffic densities, i.e., 2119-3906 vehicles/hour during the experiment, did not. Fine particulate mass at a height of 2 m at five m downwind was elevated 18% above background, coarse mass 45%, and fine lead 718%. Exponential equations relating concentration to the reciprocal of height and distance were fit to the data for both ground level and vertical concentration. Concentration isopleths were constructed to map suggested siting constraints.
NTIS Title Notes Final rept..
PUB Date Free Form Aug 84
Category Codes 13B; 68A
NTIS Prices PC A03/MF A01
Primary Description 600/08
Document Type NT
Cataloging Source NTIS/MT
Control Number 431420768
Origin NTIS
Type CAT