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Mallard Island Large Rivers Loading: Monitoring WY 2010 Nicole David Sources, Pathway, and Loading Work Group May 27, 2009 Item #4
SPLWG recognized Delta outflow as potentially significant pathway for contaminants Identified as a high priority information gap Study initiated in 2002 Background Item #4
*Contingency money used (15 samples) Samples Collected Item #4
370,000 cfs Delta Outflow from 12/20/05 to 01/25/06 Item #4
Load Estimates Item #4
Slope 0.22 Slope Low Flow Slope Tidal High Flow - Item #4 SSC – Hg Relationships Influence Loads
PCB Loads and Allocations Item #4
Hg Loads and Allocations Item #4
Sampling Budget Example 5–6 Storms 40 samples for Hg, PCBs, and sediment $35, samples for Hg speciation (HgD, MeHgT, MeHgD, Hg(II)) $10,000 Lab Total $45,000 Field Labor $25,000 Project Management + Reporting $30,000 Overall $100,000 Item #4
Progress in Estimating Loads at Mallard Island Nicole David Lester McKee Item #4.
River Loads The Mallard Island Study Nicole David, John Oram, Lester McKee, SFEI Russ Flegal, UCSC.
Mallard Island and the Largest Flood Event Since 1997 Nicole David Lester McKee San Francisco Estuary Institute.
1 PCB and PBDE loads at Mallard Island on the Sacramento River: WYs John Oram, Jon Leatherbarrow, and Lester McKee Sources Pathways and Loadings.
San Francisco Estuary Institute Small Tributaries Loading Study #2 Zone 4 Line A, Cabot Blvd. Hayward Year 2 – Draft Data To-date Sources Pathways and.
Mercury Transport to San Francisco Bay through the Sacramento-San Joaquin River Delta. Nicole David, Lester J. McKee, Jon E. Leatherbarrow December 15,
RMP Dioxin Strategy Susan Klosterhaus Sources Pathways and Loadings Workgroup Item #9.
Pollutant Loads to the Bay: Measuring the L in TMDL Lester McKee Sources Pathways and Loadings Workgroup and Watershed Program Manager SFEI RMP Annual.
1 PCBs and PBDEs on the Guadalupe River WYs 2003 – 2006 John Oram, Jon Leatherbarrow, and Lester McKee Sources Pathways and Loadings Workgroup November.
Concentrations and loads of PCBs and OC pesticides in the Guadalupe River watershed Jon Leatherbarrow 1,2, Lester McKee 1, John Oram 1 1 San Francisco.
RMP Program Objectives & Management Questions Question 3: Describe sources, pathways, loadings, and processes leading to pollutant-related impairment in.
High Flow Studies (WY 2005) Lester McKee Sources Pathways and Loadings Workgroup.
Comparative Analysis of Loads of Mercury in Coyote Creek and Guadalupe River Lester McKee RMP SPLWG Chair San Francisco Estuary Institute
1 Guadalupe Small Tributaries Loads Study WYs (PCBs and PBDEs) John Oram and Lester McKee Sources Pathways and Loadings Workgroup November 13 th.
Suspended Sediment Loads from Bay Area Small Tributaries Mikolaj Lewicki and Lester McKee Sources Pathways and Loading Workgroup May 14 th 2008 Item #3a.
1 Trace element loads in urbanized watersheds and the potential for treatment of NPS loads Lester McKee Sources Pathways and Loadings Workgroup May 22.
Item #4 Slide 1 A Mass Budget of Polybrominated Diphenyl Ethers in San Francisco Bay, CA John J. Oram, Lester J. McKee, Christine E. Werme, Mike S. Connor,
Mallard Island cross-sectional variability: low-flow, moderate-flow, and high-flow events SF Bay Sediment Project U.S. Geological Survey Sacramento, CA.
1 Guadalupe Watershed Model Year 2 update Presentation to SPLWG May 27, 2009 Michelle Lent, John Oram, Lester McKee Item #7.
Measurements of Mercury Concentrations and Loads in a Large River System Tributary to San Francisco Bay, California, USA Nicole David, SFEI Lester McKee,
Guadalupe River Hg Monitoring WY 2010 Jen Hunt Sources, Pathway, and Loading Work Group May 27, 2009 Item #3.
Zone 4 Line A Preliminary Suspended Sediment Load Estimates HY08 Rand Eads RiverMetrics LLC Sources.
Contaminant Fate WG 5 Year Plan RMP CFWG Meeting January 15, 2008.
Concentrations and loads of PCBs and OC pesticides in the urbanized Guadalupe River watershed Presented to: RMP Sources, Pathways, and Loadings Workgroup.
San Francisco Estuary Institute Small Tributaries Loading Study Zone 4 Line A, Cabot Blvd. Hayward Years 1-3 – Partial Data Review: Continuation to Year.
In Pursuit of Urban Runoff in an Urbanized Estuary: Losing sleep over troubled water In Pursuit of Urban Runoff in an Urbanized Estuary:Losing sleep over.
Impairment Assessment and Conceptual Model of Legacy Pesticides: DDT, Chlordane, and Dieldrin RMP Annual Meeting May 4, 2004 Jon Leatherbarrow, Chris Werme,
Slide 1 Item #6 Watershed Modeling at SFEI John J. Oram, Lester J. McKee, Mikolaj Lewicki SPLWG December 2007.
1 WATERSHED SPECIFIC AND REGIONAL SCALE SUSPENDED SEDIMENT LOAD ESTIMATES FOR BAY AREA SMALL TRIBUTARIES Mikołaj Lewicki and Lester McKee Sources Pathways.
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