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MERC ER01-12
16
Live Organisms 10-50 µm –
The Port of Baltimore was 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.,
Cosinodiscus
sp.,
Tinntinnopsis
sp. and small pennate
diatoms.
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
0.0
0.0
0.0
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
8.7
8.1
0.0
0.0
Treated
0.0
0.0
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/100 ml)
SD
Control
2,633
784.01
9,380
1,003
Treated
416.7
75.28
3,300
1,037
Uptake
Mean/ml
Uptake
SD
Discharge
Mean/ml
Discharge
SD
Control
30,293
1,305
2,706
291
Treated
16,060
1,142
2,233
667