TABLE 1-2 Airborne Lead Concentration During Performance of Different Job Duties on US Navy Weapons and Small-arms Firing Ranges

Range Cleaning Ammunition Handling NOCa Outdoor Range Firing Indoor Range Firing Range Supervision Backstop Pit Cleanup Breeching Lead Indoor Simulated Marksmanship Trainer Weapons and Ordnance NOCa
No. samples 19 3 138 9 50 106 19 14 11 4
Maximum, μg/m3 848 78.4 482 558 442 342 29.6 18.7 40.6 0.92
Minimum, μg/m3 2.12 25.5 0.46 4 0.71 0.71 0.71 3.5 0.8 0.71
Mean, μg/m3 190 44 48 22 46 23 9 9 13 1
Geometric mean, μg/m3 50 39 13 15 11 8 5 7 8 1
Geometric standard deviation, μg/m3 8,169 1,849 5,980 2,669 4,730 4,274 3,669 1,940 3,476 1,140
Samples above PEL, % 58 33 31.9 22.2 16 14.2 0 0 0 0
95th percentileb, μg/m3 1,583 1,060 2,400 76 148 83 39 21 61 1

aNot otherwise classified. Not a specific operation that can be further classified.

bLognormal distribution.

Source: Personal communication, J. Seibert, Office of the Deputy Under Secretary of Defense for Installations and Environment, May 2, 2012.



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