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Ecology Publications & Forms |
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Ecology Publications & Forms |
| Title | Effects of Small-Scale Gold Dredging on Arsenic, Copper, Lead, and Zinc Concentrations in the Similkameen River |
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Effects of Small-Scale Gold Dredging on Arsenic, Copper, Lead, and Zinc Concentrations in the Similkameen River (Number of pages: 47) (Publication Size: 481KB)
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| Author(s) | Johnson, A. and M. Peterschmidt | ||||
| Description | A field study was conducted to determine if small-scale gold dredges operating in the Similkameen River exacerbate current exceedances of the human health criteria for arsenic or result in violations of aquatic life criteria for arsenic, copper, lead, or zinc. Dredge effluents were analyzed from 14 sites on the river, and discharge plumes were sampled below three dredges. Results showed that the metals concentrations discharged from small-scale gold dredges are not a significant toxicity concern for aquatic life in the Similkameen and that it would take large numbers of dredges to effect a small change in the river’s arsenic levels, even at low-flow conditions. | ||||
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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.
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| Contact | EAP Publications Coordinator at 564-669-3028 or EAPpubs@ecy.wa.gov | ||||
| Keywords | gold, results, river, toxic, zinc, dredging, copper, arsenic | ||||
| WATERSHED | Water Resource Inventory Area 49 Okanogan | ||||
| DATA | Environmental Information Management (EIM) #AJOH0045 |
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| RELATED PUBLICATIONS | Title:
Quality Assurance Project Plan: Effects of Small-Scale Gold Dredging on Metals Concentrations in the Similkameen River Lower Similkameen River Arsenic Total Maximum Daily Load: Submittal Report A Total Maximum Daily Load Evaluation for Arsenic in the Similkameen River |
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