Report prepared by C. Spicer, C. Lindsey, J. Anderson, K. Busness, D. Daly, R. Hannigan, M. Holdren, J. Hubbe, G. Keigley, T. Kelly, G. Laws, R. Lee, R. Parkhurst, D. Sharp, D. Smith, P. Sticksel, and G. Ward. Reported to ENSR Consulting and Engineering. "October, 1989"--Cover. "This report summarizes airborne collection of pollutant data over sections of the northeastern United States for the National Acid Precipitation Assessment Program (NAPAP). The data were obtained by Battelle during the first intensive field measurement program for the Acid Model Operational Diagnostic Evaluation Study (Acid MODES). Following the introduction, information [for the first volume] is presented in five sections : methodology, data quality, summary of G-1 aircraft missions, data base description, [and] G-1 aircraft flight data"--P. 1. Vol. 1 contains the methodology, data quality, summary of G-1 aircraft missions, database description, [and] G-1 aircraft flight data. Vol. 2 contains the plots and tables of the aircraft data in four appendices. Includes bibliographic references. "DocNo."