Presentation Abstract
In 2010, King County was awarded a Puget Sound Action Agenda: Technical Investigations and Implementation Assistance Grant by the U.S. EPA to estimate loading of PCBs and PBDEs to Lake Washington, Lake Union and Puget Sound; and model potential reduction in Lake Washington fish tissue concentrations associated with select PCB loading reduction scenarios. A fate model was developed based on a simple two compartment (lake water and active sediment layer) model used to evaluate PCB fate in Lake Ontario and San Francisco Bay. An estimate of total PCB loading to Lake Washington based on field data collected as part of this study and model input values based on data specific to Lake Washington (when available) were used to test the model against observed water and sediment concentrations. Model sensitivity and uncertainty analyses were also conducted to identify critical model parameters and better understand the range in uncertainty in predicted water and sediment total PCB concentrations. The fate model was coupled to a food web bioaccumulation model, which is the subject of another conference presentation. More information, including the PCB fate and bioaccumulation modeling report can be found on the project website: http://www.kingcounty.gov/environment/watersheds/cedar-river-lake-wa/pcb-pbde-loadings.aspx
Session Title
Session S-06B: Lake Washington's PCB Fish Advisory: How Do We Make Progress?
Conference Track
Toxics
Conference Name
Salish Sea Ecosystem Conference (2014 : Seattle, Wash.)
Document Type
Event
Start Date
1-5-2014 1:30 PM
End Date
1-5-2014 3:00 PM
Location
Room 608-609
Genre/Form
conference proceedings; presentations (communicative events)
Contributing Repository
Digital content made available by University Archives, Heritage Resources, Western Libraries, Western Washington University.
Subjects – Topical (LCSH)
Water--Pollution--Total maximum daily load--Washington (State)--Washington, Lake; Polychlorinated biphenyls--Environmental aspects--Washington (State)--Washington, Lake; Polybrominated diphenyl ethers--Environmental aspects--Washington (State)--Washington, Lake; Contaminated sediments--Washington (State)--Washington, Lake; Water--Pollution--Total maximum daily load--Washington (State)--Union, Lake; Polychlorinated biphenyls--Environmental aspects--Washington (State)--Union, Lake; Polybrominated diphenyl ethers--Environmental aspects--Washington (State)--Union, Lake; Contaminated sediments--Washington (State)--Union, Lake
Geographic Coverage
Salish Sea (B.C. and Wash.); Washington, Lake (Wash.); Union, Lake (Wash.)
Rights
This resource is displayed for educational purposes only and may be subject to U.S. and international copyright laws. For more information about rights or obtaining copies of this resource, please contact University Archives, Heritage Resources, Western Libraries, Western Washington University, Bellingham, WA 98225-9103, USA (360-650-7534; heritage.resources@wwu.edu) and refer to the collection name and identifier. Any materials cited must be attributed to the Salish Sea Ecosystem Conference Records, University Archives, Heritage Resources, Western Libraries, Western Washington University.
Type
Text
Language
English
Format
application/pdf
Included in
The Lake Washington PCB/PBDE Study: Development and testing of a PCB fate model
Room 608-609
In 2010, King County was awarded a Puget Sound Action Agenda: Technical Investigations and Implementation Assistance Grant by the U.S. EPA to estimate loading of PCBs and PBDEs to Lake Washington, Lake Union and Puget Sound; and model potential reduction in Lake Washington fish tissue concentrations associated with select PCB loading reduction scenarios. A fate model was developed based on a simple two compartment (lake water and active sediment layer) model used to evaluate PCB fate in Lake Ontario and San Francisco Bay. An estimate of total PCB loading to Lake Washington based on field data collected as part of this study and model input values based on data specific to Lake Washington (when available) were used to test the model against observed water and sediment concentrations. Model sensitivity and uncertainty analyses were also conducted to identify critical model parameters and better understand the range in uncertainty in predicted water and sediment total PCB concentrations. The fate model was coupled to a food web bioaccumulation model, which is the subject of another conference presentation. More information, including the PCB fate and bioaccumulation modeling report can be found on the project website: http://www.kingcounty.gov/environment/watersheds/cedar-river-lake-wa/pcb-pbde-loadings.aspx
