Isolated wetlands Administrative Order

Isolated wetlands have no hydrologic connection to a water of the US. Apply for an Administrative Order from the Washington Department of Ecology (Ecology) when work is in isolated wetlands.

Before using this page, follow the instructions on the Determining jurisdiction over wetlands & other waters webpage to see which agency, Ecology or US Army Corps of Engineers (Corps) has jurisdiction over the wetlands.

Find contact information and additional steps for submitting documents to the Corps and Ecology on the Environmental liaisons webpage.

Get an approved jurisdictional determination (AJD) from the Corps

Before you can get an Administrative Order from Ecology, you need an AJD from the Corps stating that they do not have jurisdiction over the waterbodies around the work. Follow the instructions in and use the form attached to the Corps’ Regulatory Guidance Letter (RGL) 08-02: Jurisdictional Determinations (pdf 117 kb) to get an AJD. The Corps may ask you to schedule a field visit to assist with the jurisdictional determination.

With the form from RGL 08-02, submit the following:

  • Drawings– Find out how to prepare complete application drawings on the Permit application drawings webpage. Drawings to apply for the AJD should focus on the wetlands and streams around the work area; don’t include details of the work. Include flow lines on the drawing to show connectivity between waterbodies (including through culverts and pipes). For ditches that have a break in OHWM indicators, make note of the break. The drawings should show the relationship between:
    • Ditches
    • Stream channels
    • Wetlands
    • Tributaries
    • Traditional navigable waters
  • Wetland assessment and delineation including data forms and ratings – Find out how to conduct and document wetland delineations on the Wetland reconnaissance & assessment webpage.

Apply for an Isolated Wetland Administrative Order

Once you have the AJD from the Corps, submit a Joint Aquatic Resource Permit Application (JARPA) to Ecology. The application for an Isolated Wetland Administrative Order should include:

  • AJD letter from the Corps
  • A JARPA - Access the JARPA form, attachments, and instructions on the Joint Aquatic Resources Permit Application (JARPA) Form website. In the JARPA, include:
    • Permittee contact information
    • Project location details
    • Project description
    • Wetland and stream impacts
  • Drawings of the work – Find out how to prepare complete application drawings on the Permit application drawings webpage.
  • Color photos of pre-project condition showing the Water of the US and Shoreline condition - This requirement is met if there are photos in the assessment and delineation or mitigation plan.
  • Wetland assessment and delineation including data forms and ratings – Find out how to conduct and document wetland delineations on the Wetland reconnaissance & assessment webpage.
  • Mitigation plan
  • Erosion control and stormwater control plans, and reports – Provide information on construction sequencing, stream diversions, dewatering, and how concrete process water will be handled. You will need similar information for the Temporary Erosion and Sediment Control Plan (TESC), Stormwater Pollution Prevention Plan (SWPPP), and Water Quality Monitoring and Protection Plan. Find information on preparing a TESC and SWPPP on the Erosion control policies & procedures webpage.