Zostera japonica management on commercial clam beds in Willapa Bay General Permit
We issue coverage under this general permit when shellfish growers choose to use an herbicide (imazamox) to control the non-native eelgrass Zostera japonica on their commercial clam beds. Zostera japonica is a class C noxious weed that may be controlled on commercial clam beds, but does not include use for control on geoduck and oyster beds. Physical and mechanical methods of Zostera japonica control are not regulated by this permit. Read our blog to find out more about the Zostera japonica permit.
The current permit went into effect April 4, 2020 and expires on March 3, 2025.
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Current permit and related documents
Permit reissuance
The current permit expires on March 3, 2025. The permit reissuance process includes gathering initial input, a formal public comment period on the draft permit, and formal public meetings and hearings. We plan to make a permit reissuance decision at the end of this process in early 2025.
Timeline
Spring/Summer 2024: Gather early input
Winter 2024: Formal public comment period on the draft permit
February 2025: Decision on reissuance
March 2025: Current permit expires
Related links
- PARIS – Permitting and Reporting Information System
- View annual reports and pre-treatment plans in PARIS (scroll down for results, after clicking link)
- Aquatic Pesticide Permit email list
- Washington Noxious Weed Control Board –Zostera japonica
Contact information
Shawn Ultican
Aquatic Pesticide Permit Specialist
shawn.ultican@ecy.wa.gov
360-870-3492
Eman Jabali
General Permit Administrator
eman.jabali@ecy.wa.gov
564-233-9135