EAGLE RIVER FLATS FY 00
20
Table III-1-1. Pump system locations for 2000 season.
Pump
Genset
Auxiliary
capacity
fuel
fuel
(Theoretical)
capacity
capacity
Location
System
(L/s)
(L)
(L)
183 (Area C)
1
126
940
1100*
258 (Area A)
2
126
1020
1100
146 (Area C)
3
63 /126 /189
1890
1890
256 (Area A)
4
126
1320
4090*
730 (Area C/D)
5
126
1320
4090
155 (Area C)
6
63
1020
1110
*Auxiliary fuel tank for System 1 moved to Pond 256 in May. System 4 reflects this
move.
season, increasing our auxiliary field fuel stor-
crew of eight struggled in vain to keep up in
age to 10,300 L (2,720 gal.) for refueling of the
the field. A crew of 10 would have been more
on-board genset tanks. Although specified to
effective.
match the existing, lightweight aluminum
The increase in efficiency of this method of
tanks, heavier steel tanks were ordered. The
deployment was substantial. Deployment
resulting differential in weight is 320 kg. Al-
time was about one hour for each system, with
though easily airlifted by the Blackhawk,
about 15 minutes between systems for per-
these tanks, when fueled, are beyond the lim-
sonnel and equipment transfer to the next site.
its of the commercial Bell 212 and thus of lim-
This is about half the time required for the
ited value to the project. Nonetheless, they
previous method of transport through the
were deployed fully fueled in the field along
helicopter doors. We were also able to use a
with the other tanks at the beginning of the
much smaller and more economical helicop-
season. The tanks were distributed based on
ter for the operation. Total helicopter flight
anticipated frequency of operation for the
time was three hours on site. Most of the line
pump systems. At Pond 183, no refueling tank
was assembled that day (10 May), and most
was positioned, as this pump runs infre-
of the equipment was operational by 11 May,
quently. At Ponds 258 and 155, one filled
with Ponds 146, 155, and 183 drained by the
1100-L refueling tank was positioned at each
end of the day. All equipment was online by
site. At Ponds 730 and 256, one 1890-L and
12 May, with the remaining ponds drained by
two 1100-L refueling tanks were positioned
13 May. This is the earliest we have ever
at each site.
started remediation at the Flats.
The discharge line was transported with
Although no new sump locations were re-
slings this season. Loads were made up from
quired this season, some additional site prepa-
a pre-deployment load chart based on the
ration work was carried out. This entailed
1999 line configurations (Appendix III-1A). A
blasting of drainage ditches using detonation
crew of five (later reduced to four) handled
cord and Bangalore torpedoes. Blasting was
the loading on the EOD Pad. Five- or six-m-
done on 15 May after the areas had been
long slings were wrapped around the pipe
drained to increase the explosives' effective-
choker-fashion and attached to a two-leg
ness. In Area C/D a ditch was blasted between
bridle that in turn was attached to a 12-m
the drainage to Pond 730 and Pond 75 area
wire-rope extension attached to a commercial
(Figure III-1-1). This enabled better and safer
A-Star 350B2 helicopter. Loads were limited
sampling in the area, where composite
to a maximum of nine sections of 6-m pipe.
samples had tested positive for WP in 1999.
Loose items, such as valves and reducers,
Additional blasting with detonation cord was
were sling-loaded to the field with a net. A
conducted to deepen and extend the ditches
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