The Washington State Department of Ecology (DOE) issues stormwater permits. These permits address legal requirements and control the discharge of pollutants to protect surface water and ground water quality in Washington State.
Stormwater is regulated in Washington State by several types of permits. The permits are designed to control runoff related impacts from various types of sources:
- Construction General Permits from DOE are for construction sites larger than 1 acre.
- Industrial Stormwater General Permits from DOE are for industrial facilities.
- Municipal Permits are for cities and counties and their activities and facilities.
- Sand and Gravel Permits from DOE are for mining operations.