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 field study was designed and implemented from 2011 to 2012 to measure PCB and PBDE concentrations in key contaminant loading pathways to Lakes Washington and Union (i.e., rivers, streams, stormwater, CSOs, highway bridges and atmospheric deposition) and measure the concentrations in the export pathway leaving the lake system through the Ship Canal locks to Puget Sound. By combining the contaminant concentration data with long term flow estimates for these pathways, mass loading estimates to Lakes Washington and Union and subsequent export to Puget Sound for total PCBs and total PBDEs were developed. The approach to estimating pathway loads and loading estimates for each major pathway will be presented. More information, including the PCB/PBDE loadings 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; Urban runoff--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; Urban runoff--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: Estimates of loading from major pathways
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 field study was designed and implemented from 2011 to 2012 to measure PCB and PBDE concentrations in key contaminant loading pathways to Lakes Washington and Union (i.e., rivers, streams, stormwater, CSOs, highway bridges and atmospheric deposition) and measure the concentrations in the export pathway leaving the lake system through the Ship Canal locks to Puget Sound. By combining the contaminant concentration data with long term flow estimates for these pathways, mass loading estimates to Lakes Washington and Union and subsequent export to Puget Sound for total PCBs and total PBDEs were developed. The approach to estimating pathway loads and loading estimates for each major pathway will be presented. More information, including the PCB/PBDE loadings report can be found on the project website: http://www.kingcounty.gov/environment/watersheds/cedar-river-lake-wa/pcb-pbde-loadings.aspx
