PCBs Associated with Suspended Solids in the Green River Basin
Presentation Abstract
Sources of PCBs to the Lower Duwamish Waterway Superfund Site include the urban drainage basin as well as inputs from upstream portions of the Green River Watershed, which are likely a long-term source of these contaminants to the waterway. To better understand contaminants in the upper watershed, suspended solids samples were collected from four major tributaries to the Green River (Newaukum, Soos and Mill Creeks and the Black River), as well as at two locations on the main stem Green River: an upstream location at Flaming Geyser State Park and a downstream location at Foster Links Golf Course. Two collection methods were used: sediment traps and filtered solids collected by pumping water through filter bags. The sediment traps were deployed for approximately three months over a year-long period. The filtered solids were collected over a 24-hour periods during both baseflow and storm event conditions with a target of one baseflow event and five storm events. While all samples were analyzed for PCBs, polycyclic aromatic hydrocarbons, arsenic and conventional parameters, this presentation will focus on the results for PCBs, grain size and total organic carbon.
Session Title
Session S-01B: PCBs in the Green/Duwamish Watershed
Conference Track
Toxics
Conference Name
Salish Sea Ecosystem Conference (2014 : Seattle, Wash.)
Document Type
Event
Start Date
30-4-2014 10:30 AM
End Date
30-4-2014 12:00 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)
Polychlorinated biphenyls--Environmental aspects--Washington (State)--Green River Watershed (King County); Suspended sediments--Washington (State)--Green River Watershed (King County)
Geographic Coverage
Salish Sea (B.C. and Wash.); Green River Watershed (King County, 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
PCBs Associated with Suspended Solids in the Green River Basin
Room 608-609
Sources of PCBs to the Lower Duwamish Waterway Superfund Site include the urban drainage basin as well as inputs from upstream portions of the Green River Watershed, which are likely a long-term source of these contaminants to the waterway. To better understand contaminants in the upper watershed, suspended solids samples were collected from four major tributaries to the Green River (Newaukum, Soos and Mill Creeks and the Black River), as well as at two locations on the main stem Green River: an upstream location at Flaming Geyser State Park and a downstream location at Foster Links Golf Course. Two collection methods were used: sediment traps and filtered solids collected by pumping water through filter bags. The sediment traps were deployed for approximately three months over a year-long period. The filtered solids were collected over a 24-hour periods during both baseflow and storm event conditions with a target of one baseflow event and five storm events. While all samples were analyzed for PCBs, polycyclic aromatic hydrocarbons, arsenic and conventional parameters, this presentation will focus on the results for PCBs, grain size and total organic carbon.
