MERC ER01-14
9
AUG Total Suspended Solids (TSS)
TSS values for this trial are not provided because they did not meet MERC data quality
standards. However, there appeared to be clear decrease in TSS from approximately 50 mg/L in
challenge water to approximately 40 mg/L in treated (post-filter) water.
AUG Particulate Carbon Data
Challenge and treated samples from the time-integrated chambers. Ambient sample was taken
before augmentation.
Sample ID Ave (mg/L)
SD
Ambient
1.11
0.02
Challenge
4.64
0.16
Treated
3.63
0.18
AUG Live Organisms ≥50 µm
Samples from the 35 µm mesh nets.
Sample ID
Ave (#/m
3
)
SD
Challenge
66,782
3,383
Treated
62,517
1,216
Zooplankton Taxa and Observations
Minimum dimensions measured. The higher numbers on this date compared to FXIT-30-NTL,
were due to an increased abundance of rotifers and copepod nauplii.
Challenge (pre-filter)
1.
Eleven (11) taxa or general categories were present in the challenge sample: Calanoida,
Cyclopoida, Harpacticoida, bivalves, diatoms, copepod nauplii, polychaetes, barnacle nauplii,
Nematoda, Rotifera and eggs.
2. Calanoida, Cyclopoida, Harpacticoida (all adult-stage copepods), bivalves and diatoms were
very low in abundance.
3. The remaining 6 taxa/general categories: copepod nauplii, polychaetes, barnacle nauplii,
Nematoda, eggs and rotifers were similar in size and abundance to the treated samples.
4. Augmentation material was present in the samples.
Treated (post-filter)
1. Six (6) taxa/general categories remained in the treated samples: copepod nauplii, polychaetes,
barnacle nauplii, Nematoda, eggs, and Rotifera.
2. Large abundances of copepod nauplii and rotifers were present in the 50-60 µm size class.
3. The majority of the polychaetes (soft-bodied) were in the 50-70 µm size class; however, one
polychaete measured 90 µm.
4. Augmentation material was present in the samples.
