This project, reported in two volumes, was undertaken to prepare an inventory of area sources of particulates, SOx, CO, HC, and NOx emissions in the five-county metropolitan Atlanta area for use in analysis and modeling of air quality in this designated Air Quality Maintenance Area for the period 1975-1985. Base year (1973) emissions are projected to 1975, 1980, and 1985, as specified in EPA's regulations governing the preparation of Air Quality Maintenance Plans. Total emissions in thirty categories, including fugitive dust, were allocated into grid squares covering the entire area. The emissions for each grid were estimated by use of EPA's 'Area-2 Program.' Other required input data for this program are fuel usage totals and emission factors. The program was modified to accept data input from up to twenty-five source categories requiring both emission calculation and apportioning, and from ten other categories which are best treated as point sources.