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Ecology Publications & Forms |
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Ecology Publications & Forms |
| Title | Persistence and Drift of the Herbicide Endothall Following Applications at Lakeland Village and Gravelly Lakes, Washington |
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Persistence and Drift of the Herbicide Endothall Following Applications at Lakeland Village and Gravelly Lakes, Washington (Number of pages: 20) (Publication Size: 785KB)
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| Author(s) | Serdar, D. and A. Johnson | ||||
| Description | Endothall concentrations were monitored in the water column of two Western Washington lakes following typical summer treatment to control aquatic macrophytes. Concentrations measured immediately after treatment (Day 1) were near the target application levels of 1-4 ppm (1,000-4,000 mg/L), but decreased to less than 50 mg/L after 24-to-48 hours. Trace concentrations of endothall were detected in untreated areas of the lakes 2-to-8 days following application. By Day 16, concentrations at all sampling sites were near or below detection limits (10-20 mg/L). No substantial changes in water clarity, dissolved oxygen, or other water quality parameters were observed during the course of the study. | ||||
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| Contact | EAP Publications Coordinator at 564-669-3028 or EAPpubs@ecy.wa.gov | ||||
| Keywords | lakes, application, study, water, water quality, lake, herbicide, dissolved oxygen | ||||
| WATERSHED | Water Resource Inventory Areas (WRIA 12,WRIA 14) |
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