31
soil Cleanup Planning
4. and high subsurface levels would be encountered.) Surface
expected. tion levels over 80 pCi/g were multiplied by a factor of two and
contamina 40 oCi/g by 1.3. Applying this factor to theinitial estimates for
ihose Over ost critical islands (so far as soil transport was concerned)
the four bled the estimate of soil volumes to be removed and
amost do 98.99 As it happened, use of Treat Factor resulted in
(rInsPo-mation of the soil volume to be removed, and the actual volume
overswas only about 5,000 cubic yards (6 percent) overthe original,
remo cted DOE-ERSP estimate. !00.10!
ae of the factor led to pessimistic predictions at the conference. It
yweated that cleaning Enjebi to residential levels (40 pCi/g) would
in ove removing 58,670 cubic yards—more than could be transported in
he year remaining, even using bulk haul. It also indicated that 25,000
cubic yards would have to be removed from Lujor just to prevent the
sland from being quarantined (i.e., to cleanit to less than 160 pCi/g). To
qualify Lujor for agriculture (80 pCi/g) as the dri-Enewetak desired, it
appeared that 49,400 cubic yards would have to be removed and
transported.
;
The boat transportation available would have been adequate to move
the predicted volumesif soil cleanup had begun on time, however,it did
not appear adequate to move the predicted volumesin the time remaining.
I) appeared that, unless the project were extended past 15 April 1980, a
maximum of 12 months would be available to excise and transportsoil
from the four islands, leaving another 2-1/2 months to complete Runit soil
cleanup and | month to complete closing the concrete cap!02 (Figure 6-16).
The latest estimates of boat capability were that only 48,000 cubic yards
DESAIS REMOVAL
ALL EXCEPT RUNIT
tau 78
°
Q.
DEBRIS AUNIT
oO
21 May 79
SOIL REMOVAL ALL ISLANOS
Q
18 Aug 29
COMPLETE
RUNIT
9
4 SUN 78
_TREMIE OPERATION
°
5 ae 18
CRATER
SEA WALL
2
16 Jud 78
Oo
1 Few 79
SOIL CEMENT
Q_LKEYWALLACAP >
18 Ape 70
QO
COMPLETE
KEYWALL
Oe
9
1S Sep 79
FIGURE 6-16. ENEWETAK CLEANUP PROJECT SCHEDULE, 4 MAY 1978.