10,000
Dispensed Submunition
Gravel Pad
8,000
Figure 19. Chromato-
gram (GC-ECD) of sol-
6,000
vent extract of soil col-
lected on a gravel pad
that had pieces of 2.75-
4,000
in. low-spin folding fin
aircraft rockets and gre-
nades (M39 and M43A1)
2,000
scattered over the sur-
face.
0
2
6
10
14
18
Time (min.)
2.75-inch rocket warhead low-order detonation
To sample this area, each of the five-member
sampling team randomly collected samples of surface
Near the mortar test area, we found the remains of a
soil to form five composite samples. The five
2.75-inch rocket warhead (U.S. Army 1981). We used
composites were analyzed for explosives residues. Of
the Expray kit to identify the explosive filler as
these samples, two were blank, two contained 0.002
Composition B (Fig. 20). Subsequent laboratory
g/g TNT, and one sample contained 5.6 g/g NG and
analysis showed that the composition was 57% RDX,
0.088 g/g 2,4-DNT (Fig. 19). The last sample had
40% TNT, and 3% HMX.
contamination similar to that found at the Lampkin
We collected soil under the explosive to a depth of
Range Firing Point.
10 cm. The highest concentrations of explosives
We also removed some soil from inside the expended
residues found in all the samples we collected were in
WP M156 rocket and analyzed the soil for white
surface soil collected directly under this low-order
phosphorus residues (USEPA 1996b). No white
detonation (Table 14, Fig. 21). Surface concentrations
were 340 g/g RDX, 40 g/g HMX, 130 g/g TNT,
phosphorus residues were detected.
Figure 20. Using
the Expray kit to
identify the explo-
sive filler of a
2.75-in. rocket
warhead as Com-
position B.
24
Previous Page
