Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Development of Gridded Area Source Emissions for the Twin Cities, Minnesota Air Quality Control Region.
Author Haws, Richard C. ; Hamilton, Jr, Harry L. ;
CORP Author Research Triangle Inst., Research Triangle Park, NC.;Environmental Protection Agency, Chicago, IL. Region V.
Year Published 1976
Report Number 41U-946-17; EPA-68-02-1386; EPA/905/2-76/003;
Stock Number PB-287 089
Additional Subjects Air pollution ; Inventories ; Contaminants ; Sources ; Grids(Coordinates) ; Minnesota ; Counties ; Populations ; Fuels ; Exhaust emissions ; Combustion products ; Computer simulation ; Metropolitan areas ; Air quality maintenance ; Computer assisted area source emissions ; Minneapolis(Minnesota) ; Saint Paul(Minnesota) ; Area sources ; Air quality control regions ; Housing ; EPA Regions ; Apportioning
Library Call Number Additional Info Location Last
NTIS  PB-287 089 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 06/23/1988
Collation 16p
The Computer Assisted Area Source Emissions procedure (CAASE) was used to allocate county total emissions to subcounty area source grid squares. The grid square system provided a continuous set of squares over the seven counties of the Twin Cities, Minnesota AQCR. Objective apportioning factors based on population, housing units, area of the grid square, or a combination of these characteristics were used for the distribution of most emission source categories. The application of these factors is included in the CAASE computer programs. The remaining emission source categories--diesel rail locomotive, aircraft operations, and waterborne vessels--were allocated on the basis of factors especially developed for this AQCR. The rationale used in this development is documented in this report. Assuming the correctness of the totals of each category of emissions furnished to the contractor, the allocated area source emissions should provide a suitable base for air quality modeling.