ALERT: All Ecology business operations are closed for furloughs July 2, 10, 17 & 24.
All offices remain closed to walk-in service due to COVID-19.
This permit is designed to protect water quality during efforts by the Washington State Department of Agriculture to eradicate Asian and European gypsy moths. This permit is a combined National Pollutant Discharge Elimination System (NPDES) and State Waste Discharge Individual Permit.
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General Permit Unit