The report describes the development of a set of programs especially for air-pollution related problems. (The phenomenal growth of the microcomputer industry has made it possible for anyone in industry to have a relatively fast and easy-to-use computer. Unfortunately, the specialized software needs of the air pollution community have not been met.) The report describes: microcomputer programs of electrostatic precipitator performance, an implementation of the GCA/EPA baghouse model; an in-stack opacity prediction program; and a plume opacity model. User benefits, hardware/software requirements, and general restrictions are given, as well as brief descriptions of the theoretical models. A sample problem, which gives detailed instructions on how to use the menus and obtain desired results, is included for each program.