The report is the first full compilation (not a supplement) since the October-December 1980 report (EPA-600/7-81-012a and -12b). Because the next three reports are to be supplements, this issue should be retained for reference throughout the year. The report, generated by a computerized data base system, presents a survey of operational and planned domestic utility flue gas desulfurization (FGD) systems. It summarizes information contributed by the utility industry, process suppliers, regulatory agencies, and consulting engineering firms. Domestic FGD systems are tabulated alphabetically by development status (operational, under construction, or in planning stages), utility company, process supplier, process, and waste disposal practice. It presents data on boiler design, FGD system design, fuel characteristics, and actual performance. Process flow diagrams and FGD system economic data are appended. Section 3 of the report, because of its length, appears in Volume II.