Air quality and meteorological data collected, processed, and edited during the Clinch River Power Plant Plume Study (June 1976 through September 1977) are contained on one magnetic tape. The thirty-four files on the tape contain data of six types: (1) fixed-station data, (2) mobile ground monitoring data, (3) airborne monitoring data, (4) sulfate measurements, (5) upper air meteorological data, and (6) plant operating data. The fixed-station files contain hourly averages of SO2, NOx, NO2 and NO along with wind and temperature data. Ground mobile files contain pollutant and meteorological data from both stationary and mobile monitoring modes. The airborne files are in the form of a series of traverses across the plume between specified check points. Sulfate measurements were taken at selected times at the fixed stations and by mobile van. The upper-air file contains pibal and T-sonde observations of vertical profiles of temperature, wind speed, and direction. Hourly emission rates of SO2 and NO along with generator loads and stack data are contained on the plant operations file. The order in which the files are organized on the tape, formats for each file type, and a description of the data are contained in Appendix C of the report describing the field study.