Public reporting burden for this collection of information is estimated to average 1 hour per response, including the time for reviewing instructions, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing this collection of information. Send comments regarding this burden estimate or any other aspect of this collection of information, including suggestions for reducing this burden to Department of Defense, Washington Headquarters Services, Directorate for Information Operations and Reports (0704-0188), 1215 Jefferson Davis Highway, Suite 1204, Arlington, VA 22202-4302. Respondents should be aware that notwithstanding any other provision of law, no person shall be subject to any penalty for failing to comply with a collection of information if it does not display a currently valid OMB control number. PLEASE DO NOT RETURN YOUR FORM TO THE ABOVE ADDRESS. 16. SECURITY CLASSIFICATION OF: 17. LIMITATION OF ABSTRACT 18. NUMBER OF PAGES 19a. NAME OF RESPONSIBLE PERSON Byung J. Kim a. REPORT Unclassified b. ABSTRACT Unclassified c. THIS PAGE Unclassified UU 99 19b. TELEPHONE NUMBER (include area code) 916-557-5302 Standard Form 298 (Rev. 8-98) Prescribed by ANSI Std. 239.18i Abstract For many decades, Open Burning/Open Detonation (OB/OD) has been used as a safe, effective, and economic way to demilitarize munitions for energetic material disposal. Field OB/OD air emissions have been very difficult to characterize because of rapid dispersion, short event duration, heterogeneous emission concentrations, large plume lift, soil entrainment, and explosive safety restrictions. Work on SERDP project WP-2153 is a continuation of work on SERDP project WP-1672 "Feasibility of New Technology to Comprehensively Characterize Air Emissions from Full Scale Open Burning and Open Detonation" which was successfully completed in FY10. Work on SERDP WP-1672 determined that an aerostat-lofted instrument sampling package called the "Flyer" seemed to be a feasible measurement platform for determining emission factors for the OB of propellants and the OD of explosives.In order to meet the objectives of SERDP WP-2153, we conducted a field campaign to characterize air emissions from OB in pans of three propellants (M31A1E1, M26 and SPCF) and static firing of Sparrow rocket motors (containing ammonium perchlorate (AP) composite propellant). The field campaign occurred over a three week period from March 19 through April 7, 2011 at Tooele Army Depot, UT. The research team also studied the feasibility of using the Flyer to characterize air emissions from soil-covered OD.During the field campaign, the Flyer was maneuvered into the OB and static fire plumes for sampling. The 46 lb (21 kg) instrument package was lofted with a He-filled balloon of 16 ft (4.9 m) nominal diameter, maneuvered by two tethers connected to two vehicles. Continuous measurements of CO 2 and CO, and batch samples for particulate matter (PM 10 and PM 2.5 ), metals, HCl, perchlorate, chlorate, volatile organic compounds, and semi-v...