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Irrigation System Aquatic Weed Control NPDES General Permit
Irrigation System Aquatic Weed Control NPDES General Permit
The Washington State Department of Ecology (Ecology) issues general permits
for the use of herbicides to control aquatic weeds in irrigation canals.
Permit Modification
March 17, 2010: Ecology modified the permit to allow the use of the pesticide
endothall.
Additional Information
For more information please contact:
Laurie Morgan, LHG
Hydrogeologist
Washington State Department of Ecology
Water Quality Program
PO Box 47600
Olympia, WA 98504-7600
(360) 407-6483
Email:
Laurie.Morgan@ecy.wa.gov
Copyright © Washington State Department of Ecology. See http://www.ecy.wa.gov/copyright.html.
