Which construction sites need to apply for a permit?


Construction activities that require this permit are any land disturbing activities such as clearing, grading, excavating, and /or demolition that: one or more acres of land area, or are "part of a" and Ecology can also require a permit for any size construction site if it determines the site is a:

  • Construction activities that require a permit also include clearing forested areas, if the clearing is in preparation for construction activities.
  • Larger common plan of development or sale" that will ultimately disturb one or more acres of land Discharge stormwater from the site into state surface water(s) or into storm drainage systems, which discharge to state surface waters. significant contributor of pollutants to waters of the state.

Show All Answers

1. Do I need a Construction Stormwater NPDES Permit?
2. How do I apply for permit coverage?
3. What does the permit require?
4. What is the contact information for the Construction Stormwater General Permit?
5. Where do I send completed forms?
6. Which construction sites need to apply for a permit?
7. Who needs to apply?