MERC ER01-14
17
NTL Total Suspended Solids (TSS)
TSS samples at three time points taken from challenge and treated sampling hoses.
TSS MDL = 2.4 mg/L.
NTL Particulate Carbon Data
Samples from the time-integrated chambers.
Sample ID Ave (mg/L)
SD
Challenge
2.13
0.01
Treated
1.84
0.00
NTL Live Organisms ≥50 µm
Samples from the 35 µm mesh nets.
Sample ID
Ave (#/m3)
SD
Challenge
142,276
8,983
Treated
1,924
198
Zooplankton Taxa and Observations
Minimum dimensions measured.
Challenge (pre-filter)
1. Eleven (11) taxa or general categories were present in the challenge samples: copepod
nauplii, Rotifera, bivalves, Polychaeta, diatoms, Calanoida, barnacle nauplii, eggs,
harpacticoid, tintinnids, and Nematoda.
2. Copepod nauplii were the most abundant taxa.
Treated (post-filter)
1. Four (4) of the eleven taxa or general categories remained in the treated samples: Rotifera,
copepod nauplii, eggs, and Polychaeta.
2. Copepod nauplii were in the 50-60 µm size class but fewer were found in the treated samples
than in the challenge samples. The removal of live organisms > 50 µm was 98.6%
3. Polychaetes found were mainly in the 50-70 µm size class.
Sample ID
Sample
Time
TSS
AVE
(mg/L)
TSS
SD
Challenge 1
1143
5.8
0.3
Challenge 2
1207
4.9
0.1
Challenge 3
1234
5.0
0.1
Treated 1
1143
5.4
0.4
Treated 2
1207
4.7
0.4
Treated 3
1234
4.2
0.3
