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SOP6 – Water Quality Analysis
38
7.0. SOP 6 – Water Quality Analyses
Version 2.0
Date of Issuance: June 25, 2012
Author: Janet Barnes, Katherine Ziombra
7.1. Introduction
This section discusses the field and laboratory methods used to analyze for total suspended solids
(TSS), dissolve organic carbon (DOC), particulate organic carbon (POC), and chlorophyll-a
(Chl-a). Mineral Matter and Percent Transmittance are also discussed. The laboratory analyses
are briefly summarized. Details are found in the accompanying document produced by the
contract analytical laboratory, CBL/UMCES Nutrient Analytical Services Laboratory or at
http://nasl.cbl.umces.edu/.
7.2.1. Field Set-up
Before uptake begins, place four, 5-L carboys next to both the control and treated sampling
containers labeled as follows for ambient and three TSS sample analysis.
1.
Ambient
2.
PT-1
3.
PT-2
4.
PT-3
Place one 5-L carboy near both control and treated whole water reservoirs labeled as follows for
POC, DOC and chlorophyll sample analysis.
1.
WWC
2.
WWT
7.2.2 Sampling - Ambient
Ambient water will be sampled at the start of uptake from both control and treated sampling
containers. Allow ambient river water to flow for several minutes to flush out the piping system.
Sample rinse carboy three times, then fill the containers labeled ambient and take to the science
laboratory for immediate filtering. Ambient water is analyzed for POC, DOC, Chl-a, and TSS
following filtration procedure in Section 7.3.
7.2.3. Post-Augmentation Challenge Water Conditions – TSS
TSS samples are collected before the challenge water flows through the treatment system at three
time points:
1.
Initial, at least 5-minutes after uptake has started, and after ambient sample has been
collected (PT-1)
2.
Mid-point, after approximately half of the tank volume has been filled-dependent on
sample flow (PT-2)
3.
Final, after the tanks have been filled to determined volume.
Sample rinse carboys three times, then fill labeled container for both control and treated
sampling containers. Immediately transport the carboy to the science laboratory for immediate
filtering for TSS.