High Flow Studies (WY 2005) Lester McKee Sources Pathways and Loadings Workgroup.

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Presentation transcript:

High Flow Studies (WY 2005) Lester McKee Sources Pathways and Loadings Workgroup

Sacramento River at Mallard Island (River Loadings – RMP Funding) Chipps Island Pittsburg Marina Sacramento River Sampling Location

Sampling (10 samples collected over 4 days) 2 samples 3 samples

Parameters and Preliminary Results Do not cite or quote Total Hg PCBs PAHs PBDEs Total Se: – µg/L SSC DOC POC

Guadalupe River at San Jose (Small Tributaries Loading) Funding USACE ($100 k) RMP ($50 k) SCVURPPP ($23 k)

Sampling ~40 samples so far (6 for Bed Load Hg)

Parameters and Preliminary Results Do not cite or quote Total Hg73 – 1,496 ng/L Dissolved Hg4.2 – 5.4 ng/L (0-6% of total Hg) Total MeHg0.09 – 1.89 ng/L Dissolved MeHg0.05 – 0.11 ng/L Particulate MeHg1.6 – 9.9 ng/g (est) PCBs PBDEs SSC DOC POC

Coyote Creek at Highway 237 Funding RB2 – Lab only $13 k)

Sampling (n = 7)

Parameters Total Hg PCBs PBDEs SSC DOC POC