Mr. Church
to exploration to locate other possible subterranean pockets.
stated that the available data was not extensive enough to support a contention
that other pockets did not exist.
For purposes of certification there would
have to be edditional data taken.
The same mcthod of obtaining data for
certification applies to all islands.
This consists of in-Sites and surface
soil sample surveys, and investigation of suspected burial sites, supplemented
by selected soil profiling data.
Obviously, the greater the density of soil
sampling profile data, the lower the chance of being surprized later in the
cleanup.
After extensive discussion, the following was proposed and accepted.
northern half of the island will be gridded on a 50 meter grid.
The
The "cool"
area will be sampled first in order to characterize the areas to be used for
stockpilmg of soil and debris from other islands.
Approximately 16 to 50
sample sites will be required, depending on initia] findings.
be decided based on stockpile locations.
Areas are to
Sampling transects should be cut
through the mounds in this area to characterize the contents thereof.
Characterization of the extent of subsurface pockets can use an adaptation
of the one half distance technique, working along the 50 meter ‘erid lines.
Density of other sampling in the “hot"’ areas can be decided on basis of data
obtained from the “pocket” investigation.
Use of the standard 350 meter: grid will permit use of data obtained
during characterization for consideration for certification.
Although Runit