FINAL SITE INSPECTION REPORT

124612471248124912501251125212531254125512561257125812591260126112621263126412651266126712681269127012711272127312741275127612771278127912801281The Demolition Area was also visited by the ASR team, which reported finding two rows ofdemolition craters, each row consisting of approximately twenty craters. The craters were usedfor demolition of munitions. MD was reported within and surrounding the craters. The ASRteam performed a random inspection of the Turret Gunnery Training Range safety fan and didnot find any MD.The PA/SI collected two surface soil samples (0 to 0.5 ft bgs) and two subsurface soil samples(0.5 to 2.0 ft) from within INPR Site No. 1 and shown on Figures 7-2 and 7-3. Samples wereanalyzed for metals, explosives and perchlorate.7.3 MEC EvaluationThe likely range munitions used were: INPR Site No. 1 Mk 23, Mk 76, Mk 84, Mk 89, Mk 106, M38A2, BDU 10, and BDU33 practice bombs. In addition Weston (2004) reported finding a Mark-12 practicenuclear bomb (inert training bomb filled with concrete) and a Fuel-Air-Explosive BLU-95 bomb. The Mark-12 and BLU-95 were likely bombs that drifted over from theadjacent Navy Bomb Range. The Mark-12 has a parachute that is deployed duringdecent from the aircraft. The Shaw UXO safety expert reviewed the photograph of thereported BLU-95 and identified the bomb as a BLU-73. The BLU-73 contains extremelysensitive explosive components. All others contain relatively insensitive explosivecomponents. Demolition Area C-4 Blocks, M60 igniter, detonation cord and time blasting fuze,blasting caps both electric and non-electric, all other munitions types used on theBoardman AFR. The detonation cord has a moderate explosive sensitivity risk. Turret Gunnery Training Range 20-mm Ball practice ammunition. The projectile ismachined from bar steel. The ammunition has a relatively insensitive explosive risk.The types of munitions used at the Range Complex No. 1 AOC are listed above. Debris fromthese munitions was observed during the ASR site visit in 1997. The ASR noted that other thanthe Mk 23 practice bomb, the remaining bombs on INPR Site No. 1 are post Korean Warvintage, particularly the BDU-10 practice nuclear bomb.7.3.1 Field Observations and Historical Evidence of MECThe Demolition Area and Turret Gunnery Training Range were visited during the SI fieldinvestigation. No visual reconnaissance was completed in either area as the presence of MECand munitions debris has been previously observed. However, prior to collecting soil samples atboth areas, the path from the vehicle to the sampling point was visually surveyed by a UXOtechnician with the aid of an all-metal detector. The paths are shown on Figures 7-1 and 7-6.MD was observed in the Demolition Area (Figure 7-6), but no debris was observed at thesampling locations for the Turret Gunnery Training Range.Boardman AFR Final SI Report.doc 7-2 Contract No. W912DY-04-D-0010 Delivery Order No. 003September 2007