Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Improvements to single-source model /
Author Mills, Michael T.
Other Authors
Author Title of a Work
Stern, Roger W.,
CORP Author GCA Corp., Bedford, Mass. GCA Technology Div.;Environmental Protection Agency, Research Triangle Park, N.C. Office of Air Quality Planning and Standards.
Publisher Environmental Protection Agency, Office of Air and Waste Management, Office of Air Quality Planning and Standards ; For sale by the National Technical Information Service,
Year Published 1977
Report Number EPA-450/3-77-003a; EPA-450/3-77-003b; EPA-450/3-77-003c; GCA-TR-76-6-G(3); EPA-68-02-1376
Stock Number PB-274 527
OCLC Number 02989142
ISBN pbk.
Subjects Sulfur dioxide. ; Air quality monitoring stations. ; Sulphur dioxide
Additional Subjects Mathematical models ; Sulfur dioxide ; Air pollution ; Concentration(Composition) ; Sites ; Performance evaluation ; Electric power plants ; Graphic methods ; Monitoring ; Trends ; Atmospheric diffusion ; Industrial wastes ; Combustion products ; Wind velocity ; Fossil fuel power plants ; Air pollution sampling ; Single source models ; Point sources
Internet Access
Description Access URL
Vol. 1
Vol. 2
Vol. 3
Library Call Number Additional Info Location Last
EJBD ARCHIVE EPA 450-3-77-003a Headquarters Library/Washington,DC 02/24/2014
EJBD ARCHIVE EPA 450-3-77-003b Headquarters Library/Washington,DC 02/24/2014
EJBD ARCHIVE EPA 450-3-77-003c Headquarters Library/Washington,DC 03/26/2013
EKBD  EPA-450/3-77-003a v.1 Research Triangle Park Library/RTP, NC 09/10/1999
EKBD  EPA-450/3-77-003b v.2 Research Triangle Park Library/RTP, NC 09/10/1999
EKBD  EPA-450/3-77-003c v.3 Research Triangle Park Library/RTP, NC 09/10/1999
ESAD  EPA 450-3-77-003A Region 10 Library/Seattle,WA 03/23/2010
ESAD  EPA 450-3-77-003B Region 10 Library/Seattle,WA 03/23/2010
ESAD  EPA 450-3-77-003C Region 10 Library/Seattle,WA 03/23/2010
NTIS  PB-274 527 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 06/23/1988
Collation viii, 47 p. : ill., graphs, map ; 28 cm.
This report documents an evaluation of the model performance stratified by six stability classes, three wind speed classes, and three mixing height classes. The model accuracy is found to be dependent on stability class. For stabilities A and B, the model shows some tendency to overestimate concentrations, especially near the plant. For stabilities D, E, and F, the model greatly underestimates concentrations at all but the most distant sampler. For stability C, the model tends to agree with the measurements. Higher wind speeds result in a trend toward overestimates at the Muskingum plant, and a trend toward underestimates at the Canal plant. For the Canal plant, there does not appear to be a definite pattern between the accuracy of the model estimates and mixing height. However, at the Muskingum plant, large underestimates occur for the lowest mixing height class. This implies that the model is treating the plume as penetrating the top of the mixed layer (with resulting concentration estimates of zero) more frequently than actually happens.
Prepared by GCA Corporation, GCA Technology Division, Bedford, Mass., under contract no. 68-02-1376, task order 23. Includes bibliographical references (p. 47).
Contents Notes
v. 1. Time-concentration relationships. -- v. 2. Testing and evaluation of model improvements. -- v. 3. Further analysis of modeling results.