III-1. EAGLE RIVER FLATS POND PUMPING
29
the EOD Pad and the Eagle River near the
jump on the crucial first months of the next
entrance to the Pad. With the use of the slings,
season, which looks to be even better than
we were also able to airlift the pipe between
2001.
the riverbank and the edge of the EOD Pad.
Additional development work needs to be
All the check valve seals were replaced with
conducted on the remote monitoring systems
a more robust sealing arrangement to improve
associated with the pumping and remediation
their performance.
projects. After a successful year, the video
A Bobcat 753 skid-steer loader was ob-
system needs to be optimized, and the new
tained off the Corps excess equipment list for
meteorological and web camera base stations
use this year. After some minor repair work
reconfigured to reduce idle-time current draw.
by Roads and Grounds, the loader was
An additional web camera may be deployed
brought to the EOD Pad. The Bobcat proved
next season, probably in Bread Truck to moni-
very useful in moving pipe, wire reels, equip-
tor the ditch. These issues are discussed in
ment crates, and even empty fuel tanks. It
more detail in Section III-5.
was also critical in the deployment and retro-
Other development work in progress in-
grade of the discharge line. It is definitely a
cludes the installation of solar-powered con-
valuable addition to the project. Further re-
ditioning units on the gensets to prevent the
pair work on the loader is being conducted
this winter at the CRREL office in Fairbanks.
The Eagle River Flats web page has been
completed and expanded. It is accessible
Table III-1-6. Predicted flooding tides for
t h ro u g h the CRREL public web site at
2001 season.
Day
Time
Height (m)
Time
Height (m)
access to the bibliography, the web cameras,
the pond data acquisition sites, and the me-
May
teorological data is currently available, as well
6
0736
9.51
--
--
as several other features such as points of con-
7
0821
9.54
--
--
8
0854
9.57
--
--
tact, site ecology, and tide tables. A "Current
9
0927
9.48
--
--
Activities" button has been added to the home
page that gives an update on Flats-related
July
21
0834
9.57
--
--
activities.
22
0928
9.69
--
--
23
1011
9.69
--
--
24
1100
9.54
--
--
THE 2001 SEASON AND BEYOND
August
9.85
19
0827
--
--
The 2001 season is predicted to be a very
10.03
20
0911
2154
9.63
good one for remediation at the Flats. There
10.07
9.78
21
0958
2233
9.85
9.85
22
1046
2314
are essentially no flooding spring tides in May
23
--
--
2357
9.66
and June, and the July tide may be prevent-
able depending on climatological conditions.
September
16
0721
9.63
2013
9.57
The first sure flooding tide does not occur
17
0811
2051
10.00
9.82
until 19 August (Table III-1-6). The decision
18
0857
2127
10.18
10.00
needs to be made as to whether the pumps
19
0943
2204
10.15
9.82
should be pulled out in mid-August or mid-
20
1029
2242
9.91
10.04
21
1116
9.48
2328
9.66
September. The gain in remediation over the
15-20 days after the August flooding tides
Notes: Pre-season tidal predictions.
may not be sufficient to justify the added ex-
ERF tidal classifications:
9.48- to 9.54-m tides: Minor / Preventable
pense in fuel, helicopter time, and operational
9.55- to 9.82-m tides: Substantial / May be preventable
expenses. However, keeping the areas
>9.82-m tides: Major / Unpreventable
drained for as long as possible will give us a
Bold tides are likely flooding tides.