The objectives of the research were as follows: To identify waste plastic/coreactant reaction products with potential commercial value; To idenitify waste plastic/air combustion products that are potential air pollutants; and To conceive of and provide technical and economic evaluations for chemical processes using waste plastics as raw materials. The report presents the approaches, methods, and results of these various phases of the technical-economic analyses performed on waste plastic utilization systems. The general approach and analytical tools employed are presented. The determination of the equilibrium species distributions and reaction path analyses are given. The kinetic analyses and preliminary design and economic analyses are also discussed. The conclusions and recommendations include not only the proposed selection of processes for further application, but also other implications, for air pollution.