High Flow Studies (WY 2005) Lester McKee Sources Pathways and Loadings Workgroup
Mar 27, 2015
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 RiverSampling Location
Sampling(10 samples collected over 4 days)
0
10000
20000
30000
40000
50000
60000
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
Parameters and Preliminary Results Do not cite or quote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
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)
0
1000
2000
3000
4000
5000
10/1/04 11/1/04 12/2/04 1/2/05 2/2/05 3/5/05
Date
Dis
char
ge
(cfs
)
0
100
200
300
400
500
600
700
Tu
rbid
ity
(FN
U)
Flow
Water Sample
Bed Load Sample
Turbidity
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
Coyote Creek at Highway 237Funding RB2 – Lab only $13 k)
Sampling(n = 7)
0100
200300400
500600700
800900
1-Nov 21-Nov 11-Dec 31-Dec 20-Jan 9-Feb
Date
Dis
ch
arg
e (
cfs
)
Discharge (cfs)
Sample
Parameters
• Total Hg
• PCBs
• PBDEs
• SSC
• DOC
• POC