"EPA/600-S7-89-010a." "Jan. 1990." Caption title. At the head of the title: Project Summary.

This report documents the development of temporal, spatial, and species allocation factors for the 1985 NAPAP anthropogenic point and area source emissions inventories. These allocation factors are used to apportion annual emissions totals into gridded, hourly, speciated emissions estimates suitable for use as input to atmospheric transport models such as the Regional Acid Deposition Model (RADM). Allocation factors are statistical representations of the spatial and temporal distribution of annual emissions, or representative speciation profiles for particular source types. Factors are generally applied to NAPAP annual emissions records on the basis of point source SCC or NAPAP area source category. The temporal, spatial, and species allocation factors are discussed in detail in separate report sections. Each section contains a description of the methodology for application of the factors, a discussion of data sources, and documentation of the activities undertaken to create the allocation factor data sets used in the 1985 NAPAP resolved modeling inventories.