OLS : Record


Main Title Field Validation of Exposure Assessment Models. Volume 1. Data.
Author Doran, J. C.; Abbey, O. B.; Buck, J. W.; Glover, D. W.; Horst, T. W.;
CORP Author Battelle Pacific Northwest Labs., Richland, WA.;Environmental Sciences Research Lab., Research Triangle Park, NC.
Year Published 1984
Report Number EPA/600/3-84/092A;
Stock Number PB85-107209
Subjects Air pollution; Mathematical models; Concentration(Composition); Particle size distributions; Exposure; Assessments; Field tests; Sulfur hexafluoride; Zinc sulfides; Gaussian plume models; Tracer studies; Dry deposition
Library   Call Number Additional Info Location Date Modified
NTIS PB85-107209 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/23/1988
Collation 177p
Abstract This is the first of two volumes describing work done to evaluate the PAL-DS model, a Gaussian diffusion code modified to account for dry deposition and settling. This first volume describes the experimental techniques employed to dispense, collect, and measure depositing (zinc sulfide) and nondepositing (sulfur hexafluoride) tracers. The measured concentrations of the tracers form a data set by which the PAL-DS model may be tested. These concentrations are given in tabular and graphic form for five downwind distances from the release point, ranging from 100 to 3200 m, and as a function of azimuthal angle. Measurements of wind speed, direction and temperature at seven heights from 1 to 61 m were taken during the tracer releases. These data are also included, along with evaluations of several parameters describing the turbulence characteristics. A discussion of particle size distributions of the depositing tracer is given, and the calibration and quality assurance procedures used for sample analysis are described. Two chlorocarbon tracers were also used in the tracer releases, but with little success. The first volume concludes with a discussion of the problems encountered with these tracers and some recommendations for possible solutions.
Supplementary Notes See also PB85-107217.
PUB Date Free Form Oct 84
Category Codes 13B; 68A
NTIS Prices PC A09/MF A01
Primary Description 600/09
Document Type NT
Control Number 500428209
Cataloging Source NTIS/MT
Origin NTIS
Type CAT