FISP Technical Committee Meeting November 8, 2011 Timothy D. Straub, P.E., Ph.D.,
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Transcript of FISP Technical Committee Meeting November 8, 2011 Timothy D. Straub, P.E., Ph.D.,
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FISP Technical Committee Meeting
November 8, 2011Timothy D. Straub, P.E., Ph.D.,
Marian Domanski, and a many others.
LISST-SL Experience and Testing Results in Illinois
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Typical Boat Setup
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Typical Bridge Setup
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Experience Summary• 1,194 Files on LISST-SL Topside Controller Box
-Solution: MATLAB programs to view and process
Point Sample Example
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Experience SummarySingle Vertical Sample Example
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Experience Summary Cont.
• 13 IL-WSC datasets – Over 160 samples at 11 sites
• Concentration– 18 – 2,170 mg/L (from physical samples analyzed at lab)
• Velocity– 1.1 – 7.6 ft/s
• Depth– 2 – 30 ft
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Example Data at Kickapoo Bloomington
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Physical Sample and Laboratory Analysis Inventory
LISST-SL Testing:
~170 samples
~100 Sand/Fine Split
~60 Full Particle Size
17 Pycnometer
5 Loss of Ignition
Labs Used:
Kentucky Lab (Pipette/VA)
CVO Lab (SediGraph/Sieve, Pycnometer, Digital Imaging)
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Pycnometer Testing
Density
Statistic (g/ml)Minimum 2.56Maximum 2.72Average 2.64Samples Used 17
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Concentration Results
Laboratory (Mass) LISST-SL (Volumetric)1 Concentration Percent Concentration Percent (Mass Conc) finer than (Vol Conc) finer than
Statistic (mg/L) 0.0625 mm (ml/L) 0.0625 mmMinimum 18 68 17 48Maximum 2170 100 1994 100Average 557 92 448 90Samples Used 163 102 163 163
1 Volumetric concentration in this table is not adjusted for unmeasured fraction (percent of physical sample mass less than 2 microns and greater than 381 microns). The unmeasured fraction ranged from 32 to 65 percent for 25 samples analyzed.
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Concentration Results
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Concentration Results
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Comparison of particle-size distributions for three sites with a broad range of percent finer than 0.0625 mm and unmeasured LISST-SL fraction.
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Deployment Experiences
• Pitot Tube
• Tail Fin Configuration
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• Good range of testing
• Volumetric Concentration Issues– Software Revisions?– Percent finer than 2 microns?
• Overall good LISST-SL performance
Summary
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Laser In-Situ Scattering and Transmissometry (LISST) Stream Lined (SL)
• Background/Clean Water Checks– Before and after testing at a site– Instrument should be left in the water for 35
minutes prior to background checks and testing• Single Vertical Samples
– “a”, “b”, and optional “c” samples– Transit rate of the LISST-SL < 1 ft per 5 seconds
• Point Samples– “a”, “b”, and optional “c” samples– At least at 0.6 depth, and 0.2, 0.4, and/or 0.8 as
conditions allow
LISST-SL Testing Guidelines