| Main Title |
Simulating Urban Air Toxics Over Continental and Urban Scales. |
| Author |
Hutzell, W. T. ;
Luecken, D. J. ;
Ching, J. K. S. ;
|
| CORP Author |
Environmental Protection Agency, Research Triangle Park, NC. National Exposure Research Lab. |
| Publisher |
2004 |
| Year Published |
2004 |
| Report Number |
EPA/600/A-04/104 ;NERL-RTP-AMD-04-078; |
| Stock Number |
PB2005-100840 |
| Additional Subjects |
Air quality ;
Computer models ;
US EPA ;
Urban areas ;
Computerized simulation ;
Predictions ;
Photochemistry ;
Formaldehyde ;
Acetaldehyde ;
Benzene ;
CMAQ(Community multi-scale air quality model) ;
Community multi-scale air quality model ;
NATA(National air toxics assessment) ;
National air toxics assessment
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| NTIS |
PB2005-100840 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
one CD-ROM contains 4 page document |
| Abstract |
The US EPA is seeking to improve its National Air Toxics Assessment (NATA). The work computes risks to human health from Hazardous Air Pollutants (HAPs) listed in the Clean Air Act. An essential step is predicting air concentrations of the Hazardous Air Pollutants (HAPs). Currently, a Gaussian plume model makes the predictions. The model may be accurate for local scale effects on ambient concentrations from emitted HAPs that have short atmospheric lifetimes, slow loss rates and no photochemical production. For HAPs such as formaldehyde, acetaldehyde and benzene, several of the assumptions fail. These compounds contribute a large component of the calculated risk based on previous results from the NATA. EPA can then improve its risk assessments by using a model that better simulates the transport and fate of these compounds. The Community Multi-scale Air Quality model (CMAQ) is one candidate. This abstract describes evaluating a version of CMAQ to support future risk assessments. |
| Supplementary Notes |
This document is color dependent and/or in landscape layout. It is currently available on CD-ROM and paper only. CD-ROM contains a 4 page document. |
| Availability Notes |
Available on CD-ROM or in paper copy. Order this product from NTIS by: phone at 1-800-553-NTIS (U.S. customers); (703)605-6000 (other countries); fax at (703)605-6900; and email at orders@ntis.gov. NTIS is located at 5285 Port Royal Road, Springfield, VA, 22161, USA. |
| Category Codes |
68A; 68G; 91A; 43F |
| NTIS Prices |
AV$25.00 |
| Primary Description |
600/09 |
| Document Type |
NT |
| Cataloging Source |
NTIS/MT |
| Control Number |
001801100 |
| Origin |
NTIS |
| Type |
CAT |
