DOC; Mountain Administrative Support Center; Acquisition Management Division; 325 Broadway MC3; Boulder, CO

R -- V12 SOL NRMGC300705092JW POC Jacqueline Wright, (303) 497-5282; Fax: (303) 497-3163 E-MAIL: NOAA; MASC Acquisition Management, Jacqueline Wright@noaa.gov. The National Oceanic and Atmospheric Administration (NOAA) is participating in Over Land Atmospheric Dispersion Trials (OLAD), a project to study atmospheric diffusion, at the Dugway Proving Ground in Dugway, Utah in September 1997 during a 16 to 21 day window. Two aircraft will be needed, one to release the SF6 gas and one to sample as described below. Aircraft crew should have previous sampling experience. Sample aircraft: needed to sample for SF6 gas released in a 10 km line on the ground and in the air. There will be a total of 16 releases, one release each day. All missions will be during daylight hours under visual flight rules (VFR) and should be four hours long excluding transport to the West Desert Test Center. The Mission of the sampling aircraft is to measure SF6 gas at 100 m AGL. A Piper Chieftain is the preferred aircraft. The sampling system will weigh 500 lb and be 52 in long X 28 in wide X 30 in tall. An onboard operator will be supplied by NOAA/ARL. The power requirement is 450 watts. A 28 volts @ 20 amps circuit is required. NOAA/ARL will provide the inverter. Access to the outside of aircraft for an air inlet is also necessary. The preferred method is replacement of the copilot#s vent window with a window blank. A differential GPS antenna must also be mounted atop the aircraft hull. The contractor will provide aircraft and flight crew certified to fly under instrument flight rules (IFR), fuel, up to 75 flight hours excluding transport to Dugway, availability during the entire three week test window, and the ability to fly with 24 hours preliminary notice and six hours final notice. The aircraft should already be certified for the alterations needed for the sampling effort due to long lead times for FAA aircraft modification approvals. Release aircraft: needed to release 100 kg SF6 gas 100 m AGL in a 10 km line. There will be a total of 16 releases, one release per day. All releases will be during daylight hours under visual flight rules (VFR) and should be less than one hour duration excluding transport to the West Desert Test Center. The aircraft must carry a release system which weighs 1000 lb and the NOAA/ARL release system operator. The release system is 5 ft long X 4 ft wide X 3 ft tall. This implies the aircraft must have unusually large access doors. There also must be an external gas outlet which consists of 1 inch dia. rigid tube. The end of the tube must extend 8 to 10 inches beyond the aircraft skin. A window blank or access plate is preferred for this outlet, but a door which is certified to be open in flight is satisfactory. The power requirement is 450 watts. A 28 volts @ 20 amps circuit is required. NOAA/ARL will provide the inverter. A differential GPS antenna must also be mounted atop the aircraft hull. The contractor must provide the following services and equipment: the aircraft and pilot both certified to fly under instrument flight rules (IFR), fuel, up to 10 mission flight hours (excluding transport to Dugway), availability during the entire three week test window, and the ability to fly with 24 hours preliminary notice and six hours final notice. The contractor must be able to obtain all necessary FAA clearances for the above modifications by August 20, 1997. Interested sources must submit a written qualification statement along with the proposal. Responses must reference Synopsis No. NRMGC300705092JW. No RFQ will be issued as a result of this. (0192)

Loren Data Corp. http://www.ld.com (SYN# 0087 19970715\R-0017.SOL)