||Workbook for plume visual impact screening and analysis (revised).
||Sigma Research Corp., Concord, MA.;Environmental Protection Agency, Research Triangle Park, NC. Office of Air Quality Planning and Standards.
|| U.S. Environmental Protection Agency,
Air pollution effects ;
Computerized simulation ;
Combustion products ;
Exhaust emissions ;
Meteorological data ;
Atmospheric diffusion ;
Nitrogen oxides ;
Air Quality Dispersion Model ;
VISCREEN model ;
Visual impact screening
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
||154 pages ; 28 cm
The guidance document is designed to assist the user in the evaluation of plume visual impact as required by the Prevention of Significant Deterioration (PSD) and visibility regulations of the U.S. Environmental Protection Agency (EPA). A plume will be visible if its constituents scatter or absorb sufficient light so that the plume is brighter or darker than its viewing background (e.g., the sky or a terrain feature such as a mountain). The objective of the document is to provide guidance on the assessment of plume visual impacts, including the use of a plume visual impact screening model (VISCREEN), which can be used to calculate the potential visual impact of a plume of specified emissions for specific transport and dispersion (meteorological) conditions.
"Office of Air Quality Planning and Standards." "Office of Air and Radiation." Work Assignment Manager: Jawad S Touma. "Revises EPA-450/4-88-015"--Cover. "October 1992." Contract No. 68-D9-0067, WA 3-3. Includes bibliographical references (pages 59-61). Microfiche.