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MERC ER01-12
13
Live Organisms 10-50 µm –
The Port of Baltimore was still experiencing a bloom of
dinoflagellate
Prorocentrum minimum
during this trial, which was by far the dominant species in
this size category (approximately 95% of the phytoplankton found in samples). Other species in
this size category included:
Chaetoceros
sp.,
Navicula
sp.
, Cosinodiscus
sp.,
Gyrodinium
spirale
, and
Gymnodinium
sp.
Viable Bacteria and Indicator Pathogens
– In general, levels of regulated pathogens were low in
all samples regardless of analytical method used.
Enterococci
Uptake Mean
(cfu/100 ml)
SD
Discharge Mean
(cfu/100 ml)
SD
Control
0.7
0.58
1.0
0.0
Treated
0.0
0.0
0.0
0.0
E. coli
Uptake Mean
(cfu/100 ml)
SD
Discharge Mean
(cfu/100 ml)
SD
Control
0.7
0.58
0.0
0.0
Treated
1.33
1.53
0.0
0.0
V. cholerae
Uptake Mean
(cfu/100 ml)
SD
Discharge Mean
(cfu/100 ml)
SD
Control
0.0
0.0
0.0
0.0
Treated
0.0
0.0
0.0
0.0
Heterotrophic
Plate Counts
Uptake Mean
(cfu/100 ml)
SD
Discharge Mean
(cfu/100ml)
SD
Control
5,150.0
1,394.0
9,000.0
521.5
Treated
316.7
133.0
900.0
442.7
Uptake Mean
org/ml
Uptake
SD
Discharge
Mean org/ml
Discharge
SD
Control
29,430
82
9,657
1,151
Treated
13,597
1,893
685
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