NOTICE
The Washington Department of Fish and Wildlife intends to rehabilitate the Pillar-Widgeon Lake Chain (Pillar, Snipe, Cattail, Gadwall, Poacher, Lemna, Shoveler, Sago, Hourglass, and Widgeon Lakes), Upper Hampton, Lower Hampton, Hen, and Marie Lakes and the Hampton Slough Complex in Grant County beginning October 23rd, 2013.
NOTICE
The Washington Department of Fish and Wildlife intends to rehabilitate the Pillar-Widgeon
Lake Chain (Pillar, Snipe, Cattail, Gadwall, Poacher, Lemna, Shoveler, Sago, Hourglass, and Widgeon Lakes), Upper Hampton, Lower Hampton, Hen, and Marie Lakes and the
Hampton Slough Complex in Grant County beginning October 23rd, 2013. Typically,
lake rehabilitations only take one to three days to complete, however, treatments may take more time depending upon weather, equipment breakdowns, logistical constraints, and/or water quality conditions.
The pesticide to be used is an organic and naturally occurring compound called rotenone. Rotenone is non-persistent in the environment and non-toxic to humans, livestock, and other warm-blooded animals at levels used to eradicate fish. The pesticide and active ingredients to be used are powdered rotenone at 6.0-8.0% active ingredient and liquid rotenone at 5.0% active ingredient. The targeted total concentration of rotenone product in the water is less than or equal to 4.0 parts per million. Lake rehabilitation involves the treatment of water with rotenone to eradicate undesirable fish species. The undesirable fish species for this project is pumpkinseed sunfish. These species have overpopulated the lakes and have eliminated the desired recreational trout fishery.
During treatment, notices will be posted along the shorelines, at public boat launches, and other areas of normal access to the lake. Please obey the following water use restrictions within the marked treatment areas:
1.) No fish can be taken or eaten from the lake and drainage during the treatment period.
2.) Do not use water to irrigate crops during the treatment period.
3.) Do not use the lake or drainage as a potable water source during treatment period.
4.) Do not swim in the lake or drainage until the product is thoroughly mixed.
The above list details the water use restrictions applicable to the aforementioned waters for the duration of rotenone toxicity. Rotenone toxicity normally lasts one to four weeks, but may persist for up to eight weeks depending upon water quality conditions. Assays will be done to determine lake toxicity, and water use restrictions will be removed when the aforementioned waters detoxify.
For more information concerning the treatment, contact the applicator(s), Washington Department of Fish and Wildlife, Region 2 Fish Program Manager – Jeff Korth, or District Fish Biologist – Chad Jackson, at: (509) 754-4624.
This pesticide treatment is regulated under permit by the Washington Department of Ecology Water Quality Program, Eastern WA Regional Office (509) 329-3515. These pesticides have been approved for this purpose by the Environmental Protection Agency and the Washington Department of Agriculture.
#10122/3352570
Pub.: October 10, 2013NOTICE
The Washington Department of Fish and Wildlife intends to rehabilitate the Pillar-Widgeon
Lake Chain (Pillar, Snipe, Cattail, Gadwall, Poacher, Lemna, Shoveler, Sago, Hourglass, and Widgeon Lakes), Upper Hampton, Lower Hampton, Hen, and Marie Lakes and the
Hampton Slough Complex in Grant County beginning October 23rd, 2013. Typically,
lake rehabilitations only take one to three days to complete, however, treatments may take more time depending upon weather, equipment breakdowns, logistical constraints, and/or water quality conditions.
The pesticide to be used is an organic and naturally occurring compound called rotenone. Rotenone is non-persistent in the environment and non-toxic to humans, livestock, and other warm-blooded animals at levels used to eradicate fish. The pesticide and active ingredients to be used are powdered rotenone at 6.0-8.0% active ingredient and liquid rotenone at 5.0% active ingredient. The targeted total concentration of rotenone product in the water is less than or equal to 4.0 parts per million. Lake rehabilitation involves the treatment of water with rotenone to eradicate undesirable fish species. The undesirable fish species for this project is pumpkinseed sunfish. These species have overpopulated the lakes and have eliminated the desired recreational trout fishery.
During treatment, notices will be posted along the shorelines, at public boat launches, and other areas of normal access to the lake. Please obey the following water use restrictions within the marked treatment areas:
1.) No fish can be taken or eaten from the lake and drainage during the treatment period.
2.) Do not use water to irrigate crops during the treatment period.
3.) Do not use the lake or drainage as a potable water source during treatment period.
4.) Do not swim in the lake or drainage until the product is thoroughly mixed.
The above list details the water use restrictions applicable to the aforementioned waters for the duration of rotenone toxicity. Rotenone toxicity normally lasts one to four weeks, but may persist for up to eight weeks depending upon water quality conditions. Assays will be done to determine lake toxicity, and water use restrictions will be removed when the aforementioned waters detoxify.
For more information concerning the treatment, contact the applicator(s), Washington Department of Fish and Wildlife, Region 2 Fish Program Manager – Jeff Korth, or District Fish Biologist – Chad Jackson, at: (509) 754-4624.
This pesticide treatment is regulated under permit by the Washington Department of Ecology Water Quality Program, Eastern WA Regional Office (509) 329-3515. These pesticides have been approved for this purpose by the Environmental Protection Agency and the Washington Department of Agriculture.
#10122/3352570
Pub.: October 10, 2013