The cost results for all the technologies presented in the report entitled, 'Retrofit Costs for SO2 and NOx Control Options at Coal-Fired Plants', are available in three DBASE III+ files. Disks 1 and 2 are high density diskettes which contain the following: plant name, technology, boiler number, capacity in megawatts, capacity factor, removal efficiency for both SO2 and NOx removed per year, tons of NOx removed per year, capital cost in dollars, annual cost in dollars, dollars per kilowatt, mills per kilowatt hour, dollars per ton of SO2 removed and dollars per ton of NOx removed. Disk 1 is in current 1988 dollars, and Disk 2 is in constant 1988 dollars. Disk 3 contains a third DBASE file (200.DBF) with general plant boiler and company information based on Department of Energy Form 767 data. It also contains an ASCII file (README.ASC) with a list of abbreviations used in all three database files. The cost result database can be used to estimate total costs and emissions for individual or combined control technologies for the 200 plants presented in the report.