ALERT: All Ecology business operations are closed for furlough on Oct. 30. 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.
Join our email list to receive updates about this permit.
General Permit Unit