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 Table 4 (Concluded)
Size Fractions
Sand
Silt/Clay
Silt
Clay
Bulk Sediment
(>75 m)
(<75 m)
(≈5 m - 75 m) (<5 m)
Analyte
Avg. Conc.
Avg. Conc.
Avg. Conc.
Conc.
Avg. Conc.
PAHs, g/kg (Concluded)
PHENAN
*
*
*
*
228.5
ANTRAC
*
*
*
*
46.55
FLANTHE
*
*
*
*
217
PYRENE
*
*
*
*
263
CHRYSE
*
*
*
*
148
BAANTHR
*
*
*
*
125
BBFLANT
*
*
*
*
85.1
BKFLANT
*
*
*
*
73.4
BAPYRE
*
*
*
*
117.5
I123PYR
*
*
*
*
82
DBAHANT
*
*
*
*
15.45
B-GHI-PY
*
*
*
*
95.55
2MeNAPH
*
*
*
*
145.5
between the silt fraction and the clay fraction are not as consistent, but
concentrations in the clay fraction are higher for all analytes tested. TOC in the
clay fraction is approximately 8.5 times that in the silt. Oil and grease, TRPH,
PCB-1242, and PCB-1260 in the clay fraction are 2.9, 3.9, 3.9 and 26 times
greater, respectively, than in the silt. Based on correlation coefficients, there is a
strong positive correlation between metals concentrations and oil and grease and
TRPH concentrations (Figure 5). Metals are moderately correlated to TOC
concentration. There is also a moderate to strong positive correlation between
PCBs, TRPH, and oil and grease (Figure 6) and PCBs and TOC (Figure 7).
Test Candidate Unit
A 1-day field demonstration was scheduled for 10 August 2000 at the
Bayport CDF, Green Bay, WI. Equipment arrived onsite on Monday, 7 August
2000. Three full days were required to set up the system. This was not sufficient
time to debug and troubleshoot, however; a cold start was made on the day of the
demonstration. An electrical problem, unrelated to the separation unit, caused a
minor delay. The system ran intermittently after that, with additional delays for
clearing the jet pump and replacing or tightening clamps on water supply or
slurry delivery hoses. The system was operated for approximately 5 hours, at
which time sufficient material had been processed to assess the separation
efficiency, and overall system characteristics and trouble points had been
identified.
16
Chapter 2 Project Description
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