high flow studies (wy 2005) lester mckee sources pathways and loadings workgroup
TRANSCRIPT
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High Flow Studies (WY 2005)
Lester McKee
Sources Pathways and Loadings Workgroup
![Page 2: High Flow Studies (WY 2005) Lester McKee Sources Pathways and Loadings Workgroup](https://reader035.vdocuments.net/reader035/viewer/2022062417/5514d90f550346b0478b537e/html5/thumbnails/2.jpg)
Sacramento River at Mallard Island(River Loadings – RMP Funding)
Chipps Island
Pittsburg Marina
Sacramento RiverSampling Location
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Sampling(10 samples collected over 4 days)
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70000
1-Dec-04 21-Dec-04 10-Jan-05 30-Jan-05 19-Feb-05 11-Mar-05 31-Mar-05
Date
Dis
char
ge (
cfs)
Discharge (CFS)
Sample2 samples3 samples
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Parameters and Preliminary Results Do not cite or quote
• Total Hg• PCBs• PAHs• PBDEs• Total Se: 0.443 – 0.661 µg/L• SSC• DOC• POC
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Guadalupe River at San Jose(Small Tributaries Loading)
Funding
• USACE ($100 k)• RMP ($50 k)• SCVURPPP ($23 k)
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Sampling~40 samples so far (6 for Bed Load Hg)
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10/1/04 11/1/04 12/2/04 1/2/05 2/2/05 3/5/05
Date
Dis
char
ge
(cfs
)
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Tu
rbid
ity
(FN
U)
Flow
Water Sample
Bed Load Sample
Turbidity
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Parameters and Preliminary ResultsDo not cite or quote
• Total Hg 73 – 1,496 ng/L • Dissolved Hg 4.2 – 5.4 ng/L (0-6% of total Hg)• Total MeHg 0.09 – 1.89 ng/L• Dissolved MeHg 0.05 – 0.11 ng/L• Particulate MeHg 1.6 – 9.9 ng/g (est)• PCBs• PBDEs• SSC• DOC• POC
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Coyote Creek at Highway 237Funding RB2 – Lab only $13 k)
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Sampling(n = 7)
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200300400
500600700
800900
1-Nov 21-Nov 11-Dec 31-Dec 20-Jan 9-Feb
Date
Dis
ch
arg
e (
cfs
)
Discharge (cfs)
Sample
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Parameters
• Total Hg
• PCBs
• PBDEs
• SSC
• DOC
• POC