Sammamish River Water and Sediment Quality Assessment About This Document The Sammamish River Water and Sediment Quality Assessment was conducted during 2001-2003 and funded by the Water Reuse Program in the Wastewater Division. The objectives of the project were to provide an assessment of the current water and sediment quality conditions in the river, and to begin a database of analytical results for Sammamish River that would be useful for multiple King County projects (e.g., ESA-listed salmon, water reuse). Water samples were collected annually in the fall from 2001 - 2003 at 12 stations. Sediment and benthic macroinvertebrate community samples were collected concurrently with water samples in 2001 and 2003 at 10 stations. These samples were analyzed for a full suite of conventional parameters, metals and organic compounds, as well as endocrine disrupting compounds (EDCs). The Small Streams Toxicity Study coordinated their sampling with this study in 2001 and sampled 6 of the12 project stations for additional pesticides and toxicity testing. A screening risk assessment was conducted on the chemistry results for sediment and water. These results were compared with those of the 2001 toxicity tests and the benthic invertebrate community data to describe any observed or predicted impairment. Viewing the Document This report is provided in Adobe PDF format. You will need Adobe Acrobat to view the document. If you do not have this software, you can download a free copy of Adobe© Acrobat© Reader Sammamish River Water and Sediment Quality Final Report (pdf 1 mb)

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