History of Mercury in Selected Washington Lakes Determined from Age-Dated Sediment Cores: 2006 Sampling Results
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|Description||Sediment cores from Lake Ozette, Lake Sammamish, and Lake St. Clair were age-dated and analyzed for mercury as part of a long-term study evaluating mercury trends through sediment cores across the state.
Mercury concentrations have significantly declined at Lake Sammamish since the 1940s, while Lake Ozette has experienced a leveling off of mercury loading with possible slight declines over the last decade. Mercury levels in sediments at Lake St. Clair have increased during the past 15-20 years.
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|Keywords||county, lake, legislature, mercury, model, sediment, Thurston, toxics, urban, lakes, bioaccumulative|
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