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Ecology Publications & Forms |
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Ecology Publications & Forms |
| Title | PBT Chemical Trends in Washington State Determined from Age-Dated Lake Sediment Cores, 2011 Sampling Results |
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PBT Chemical Trends in Washington State Determined from Age-Dated Lake Sediment Cores, 2011 Sampling Results (Number of pages: 55) (Publication Size: 829KB)
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| Author(s) | Mathieu, C. and M. Friese | ||||
| Description | This report summarizes the sixth year of a long-term study to evaluate contaminant trends in age-dated sediment cores across the state. In 2011, sediment cores were collected from Angle, Samish, and Nahwatzel Lakes and analyzed for mercury, lead, and polycyclic aromatic hydrocarbons (PAHs). Contaminant trends varied by lake and constituent. Angle Lake sediments contained the highest levels of metals and PAHs, which showed modest declines in the top sediment layer. All contaminants in the Samish Lake core declined since their maximums. Metals increased and PAHs were erratic in the top 10 cm of the Nahwatzel Lake core. |
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The mission of the Department of Ecology is to protect, preserve, and enhance Washington’s environment. To help us meet that goal, please consider the environment before you print or request a copy.
ADA Accessibility The Department of Ecology is committed to providing people with disabilities access to information and services by meeting or exceeding the requirements of the Americans with Disabilities Act (ADA), Section 504 and 508 of the Rehabilitation Act, and Washington State Policy #188. Visit Ecology’s website for more information. |
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| Contact | Callie Mathieu at 360-407-6965 or callie.mathieu@ecy.wa.gov | ||||
| Keywords | cores, PAHs, lakes, sediment, toxic, mercury, PBTs, lead | ||||
| WATERSHED | Water Resource Inventory Areas (WRIA 03,WRIA 09,WRIA 22) |
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| DATA | Environmental Information Management (EIM) #SEDCORE11 |
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| RELATED PUBLICATIONS | Title:
PBT Chemical Trends Determined from Age-Dated Lake Sediment Cores, 2017 Results Addendum 2 to Quality Assurance Project Plan: Long-term Monitoring of Persistent, Bioaccumulative, and Toxic Chemicals Using Age-dated Lake Sediment Cores PBT Chemical Trends Determined from Age-Dated Lake Sediment Cores, 2015 Results PBT Chemical Trends Determined from Age-Dated Lake Sediment Cores, 2014 Results PBT Chemical Trends Determined from Age-Dated Lake Sediment Cores, 2013 Results PBT Chemical Trends in Washington State Determined from Age-Dated Lake Sediment Cores, 2012 Sampling Results PBT Chemical Trends in Washington State Determined from Age-Dated Lake Sediment Cores, 2010 Sampling Results Determination of PBT Chemical Trends in Selected Washington Lakes Using Age-Dated Sediment Cores, 2009 Sampling Results Determination of PBT Chemical Trends in Selected Washington Lakes Using Age-Dated Sediment Cores, 2008 Sampling Results Addendum #1 to Quality Assurance Project Plan: Depositional History of Mercury in Selected Washington Lakes Determined from Sediment Cores. History of Mercury in Selected Washington Lakes Determined from Age-Dated Sediment Cores: 2007 Sampling Results History of Mercury in Selected Washington Lakes Determined from Age-Dated Sediment Cores: 2006 Sampling Results Quality Assurance Project Plan: Depositional History of Mercury in Selected Washington Lakes Determined from Sediment Cores. |
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