III-1. EAGLE RIVER FLATS POND PUMPING
19
III-1. EAGLE RIVER FLATS POND PUMPING
REMEDIATION PROJECT: SECOND-YEAR
DEPLOYMENT UNDER THE RECORD OF DECISION
Michael R. Walsh and Charles M. Collins
U.S. Army Cold Regions Research and Engineering Laboratory
System 2 in Pond 258. The larger on-board
INTRODUCTION
tank of the System 4 generator set (genset)
This year marks the second season of
allows a longer cumulative run time, impor-
remediation of the white phosphorus con-
tant in Pond 256 because of the greater flow
tamination at Eagle River Flats on Fort
to that pond. The pump in Pond 258, after the
Richardson, Alaska. As in 1999, the frequency
initial drawdown, runs infrequently and thus
of high flooding tides over the course of the
does not require as much fuel over the sea-
summer was not favorable for attenuation of
son. System 5, the other system with a large
the contaminant. Deployment this year was
tank, was deployed in Pond 730 in Area C/D
debated, as the effectiveness of draining the
for similar reasons. Table III11 depicts the
ponds and drying the bottom sediments was
pump system locations for the 2000 field sea-
not anticipated as being high, and the funds
son.
required for even a partial effort would be
A n Alaska National Guard UH-60L
substantial. A decision to commit to an effort
Blackhawk helicopter was once again em-
this year was made for reasons of continuity,
ployed to transfer the heavy equipment from
and deployment was scheduled for early May.
the EOD Pad to the field. In addition to the
pump systems listed above, two towers and
eight fuel tanks were airlifted into the field.
This brings to 21 the number of lifts required
DEPLOYMENT
for deployment. Weldin personnel did most
In 2000 all six pump systems were rede-
of the rigging, and operations went smoothly
ployed. In Area C the pumps were deployed
after a 9-m extension was added to the sling
in the same ponds as in 1999: the 189-L/s
set. The equipment transfer was accom-
(3000-gpm) pump in Pond 146, the 63-L/s
plished in one day, with a total flight time of
(1000-gpm) pump in Pond 155, and the origi-
less than five hours. Two helicopter refuelings
nal 126-L/s (2000-gpm) system in Pond 183.
were required during the operation.
In Area A, two systems were deployed again
Three new 300-gal. double-walled fuel
this year. Ponds 256 and 258 again had 126-
tanks were purchased by the Fort Richardson
L/s systems, with System 4 in Pond 256 and
Directorate of Public Works for the project this
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