Estimates have been provided of emissions, control costs, and economic impact on a national basis for mobile sources, solid waste disposal, stationary fuel combustion and 19 industrial process sources. The pollutants from mobile sources selected for analysis are hydrocarbons, carbon monoxide, and nitrogen oxides. Three general classes of stationary sources are considered: solid waste disposal, stationary fuel combustion and industrial processes. Industrial processes sources studied are: asphalt batching, cement, coal cleaning, grain plants, gray iron foundries, iron and steel, kraft (sulfate) pulp, lime, nitric acid, petroleum products and storage, petroleum refineries, phosphate, copper, lead, zinc, aluminum, secondary nonferrous metallurgy, and sulfuric acid. Under the assumed implementation plan, stationary source control costs are projected for Fiscal Years 1973 through 1977. The stationary source pollutants for which control cost estimates are made are: particulates, sulfur oxides, hydrocarbons, carbon monoxide, and nitrogen oxides. An extended analysis is made to determine the economic impact of control costs on each industrial source studied.