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Ecology Publications & Forms |
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Ecology Publications & Forms |
| Title | Palouse River Freshwater Fish Contaminant Monitoring, 2018 Results |
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Palouse River Freshwater Fish Contaminant Monitoring, 2018 Results (Number of pages: 46) (Publication Size: 1696KB)
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| Author(s) | Jakub Bednarek | ||||
| Description | From 1984 to 2018, the Washington Department of Ecology’s Environmental Assessment Program monitored toxic contaminants in fish in the Palouse River. Results showed concentrations indicative of water quality impairment. Although banned in the 1970s, some legacy contaminants persist in the watershed and bioaccumulate in fish and other organisms. Ecology implemented a total maximum daily load (TMDL) in 2007 to reduce polychlorinated biphenyls (PCBs) and pesticides in the Palouse River. Load allocations were suggested for the wastewater treatment plants. Other strategies included managing stormwater, reducing erosion from agricultural lands, and natural attenuation. This report summarizes data collected in 2018. Ecology collected fish samples to determine if contaminants in fish are decreasing. PCBs, dichloro-diphenyl-trichloroethane (DDT), and dieldrin were contaminants of interest because they exceeded human health standards. Our findings show some attenuation of PCBs in fish tissue, DDT levels remain unchanged, and dieldrin appears to be increasing in fish from the Palouse River. |
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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 | EAP Publications Coordinator at 564-669-3028 or EAPpubs@ecy.wa.gov | ||||
| Keywords | bioaccumulation, dieldrin, PCB, pesticides, TMDL, mercury, DDT, fish toxics | ||||
| WEB PAGE | Freshwater fish contaminant monitoring | ||||
| WATERSHED | Water Resource Inventory Area 34 Palouse | ||||
| DATA | Environmental Information Management (EIM) #FFCMP18 |
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| RELATED PUBLICATIONS | Title:
Quality Assurance Project Plan: Freshwater Fish Contaminant Monitoring Program Addendum 7 to Quality Assurance Project Plan: Freshwater Fish Contaminant Monitoring Program: 2018 Quality Assurance Project Plan: Freshwater Fish Contaminant Monitoring Program |
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