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MERC ER01-12
19
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:
Gymnodinium
sp.,
Gyrodinium dominans
,
Cosinodiscus
sp., and
Chaetoceros
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
0.0
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
0.33
0.0
6.0
3.46
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
2,350
1,046.4
129,166
29,654
Treated
566.7
367.0
683.3
475.0
Uptake
Mean/ml
Uptake
SD
Discharge
Mean/ml
Discharge
SD
Control
30,577
4,596
900
96
Treated
13,587
533
803
83