15
Particulate Organic Carbon
(
POC) content of challenge water during uptake. Ambient describes
natural conditions of water in the Port of Baltimore. Control and treated show levels in test
waters from time-integrated samples collected through the entire uptake. No Arizona Test Dust,
micronized humate or instant
ice tea was added to water.
Mean (mg/l)
SD
Ambient
2.3
0.06
Control
4.5
0.05
Treated
*1.0
0.03
*
Note – High levels of lysed cells observed in the treated water.
Particulate Inorganic Carbon
(
PIC) content of challenge water during uptake. Ambient
describes natural conditions of water in the Port of Baltimore. PIC is measured once per vendor.
Low/zero concentrations are normal for the Port of Baltimore area.
Mean (mg/l)
SD
Ambient
BDL
BDL
BDL = below detection limit of 0.06 mg/l.
Percent UV Transmittance
(
UVT) at 254 nm for challenge water during uptake and discharge.
Ambient describes natural conditions of water in the Port of Baltimore and T0, T1, and T2 for
challenge water are %UVT values from three sample time points (beginning, middle, and end of
uptake). No Arizona Test Dust, micronized humate or instant
ice tea was added to water.
Uptake
Mean %UVT
SD
Ambient
82.5
0.10
T0 challenge water
82.2
0.38
T1 challenge water
82.0
0.30
T2 challenge water
81.9
0.15
Discharge
Control Mean
%
UVT
SD
Treated
Mean %UVT
SD
T0 challenge water
83.6
0.06
84.9
0.06
T1 challenge water
83.6
0.10
84.5
0.35
T2 challenge water
83.7
0.10
85.1
0.06
Active Chlorophyll –
Control and treated show chlorophyll levels in test waters from time-
integrated samples collected through the entire uptake and discharge.
Uptake
Mean (µg/l)
Uptake
SD
Discharge
Mean (µg/l)
Discharge
SD
Control
39.4
1.66
BDL
0.06
Treated
8.3
0.25
0.2
0.04