se
Operations
sail Cjeanup
alternative for moving the soil was by Lighter,
The only
© us apparent
Resupply, Cargo (LARC-LX). The soil had to be loaded on
Amphibio
20-ton trucks (approximately 8-10 cubic yards per truck) and transported,
one truck at a time, aboard the LARC-LX to the neighboring Enjebi
At Enjebi, the soil was
{sland. One round trip consumed 65-70 minutes.
bulk-haul LCU and
stockpiled on the beach for subsequent movement by
LCM-8s to Runit. The movement of soil from Boken to Enjebi began in
mid-January 1979 and was completed on 23 April 1979. A total of 3,397
cubic yards was removed in this initial soi] cleanup effort.29 Based on in
situ data, DOE-ERSP notified the JTG that the surface of Boken met
Condition B (80 pCi/g), that the subsurface met Condition D (160 pCi/g),
that a reasonable search had been made for pockets of subsurface
contamination, and that no areas remained with transuranic
concentrations known to exceed thecriteria.30
Subsequently, during the Fission Products Data Base Survey (described
in a later section), analysis of subsurface samples taken from a 50-by-50-
meter grid on Boken indicated that further investigation was required.
Additional samples were taken on 25-meter, 12.5-meter, and 6.25-meter
grids. When this data was analyzed, DOE-ERSP determined thatfive small
subsurface areas required additionalsoil excision. The CJTG wasnotified
of the requirement for the new Bokensoil operation on 10 May 1979.31
DOE-ERSP estimated that an additional 1,670 cubic yards of soil would
have to be removed from grid nodes I4NI, IONI, 9S3, 7S3, and 682 as
shown in Figure 7-23.
SOKEN IRENE |
FIGURE 7-23. BOKEN SUBSURFACE SOIL REMOVAL AREAS