Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Carbon Monoxide Hot Spot Guidelines. Volume VI: User's Manual for the Modified ISMAP Model.
Author Benesh, Frank ;
CORP Author GCA Corp., Bedford, MA. GCA Technology Div.;Environmental Protection Agency, Research Triangle Park, NC. Office of Air Quality Planning and Standards.
Year Published 1978
Report Number GCA-TR-78-32-G(6); EPA-68-02-2539; EPA/DF-80/002B ; EPA-450/3-78-040
Stock Number PB80-150238
Additional Subjects Air pollution ; Mathematical models ; Carbon monoxide ; Concentration(Composition) ; Exhaust emissions ; Guidelines ; Revisions ; Computer programs ; Fortran ; Air quality ; ISMAP models ; User manuals(Computer program)
Library Call Number Additional Info Location Last
NTIS  PB80-150238 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 06/23/1988
Collation 230p
A modified version of the ISMAP model has been developed for the analysis of carbon monoxide hot spot locations. The original version of ISMAP (Indirect Source Model for Air Pollution) was developed by Stanford Research Institute to be used in the evaluation of indirect source impact upon ambient carbon monoxide concentrations. Due to the size and complexity of the original version of the model, the modifications were made without changing the basic structure of the program. Since the analysis of parking lot traffic and emissions was an integral part of the original model structure, it was left in the modified version, but the code was modified to negate their effect upon traffic flow and air quality. In the modified ISMAP, internal zones (indirect sources) are used together with external zones to generate flow within a traffic network. This modified version of the model sets parking lot emissions equal to zero and provides a near infinite parking lot capacity so that vehicle routing between internal zones will not occur because of parking lot overcrowding. Other modifications made to ISMAP include the incorporation of a street canyon submodel. Version 2 of modified ISMAP utilized the most recent (1978) motor vehicle emission correction factors and modal analysis model coefficients and deterioration. In other aspects, it is unchanged from Version 1.