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Water Quality photo identifier

Water Quality Program

Historical Permit Development Information

Public Comment on Draft Permit, Draft Environmental Impact Statement, and SIZ Applications (October 24 - December 8, 2014)

Ecology accepted comments on the draft permit, fact sheet, draft environmental impact statement, and SIZ applications until 5 pm (or postmark if mailed), December 8, 2014.

Public Comments Received on Draft Permit, Draft EIS and SIZ Application

Draft Permit Open House, Workshop, and Public Hearing

Ecology held a combined open house, workshop, and public hearing on the draft individual permit, draft EIS, and SIZ applications for Willapa Bay and for Grays Harbor. The purpose of the workshop was to explain the individual permit, and answer questions in order to facilitate meaningful testimony during the hearing. The purpose of the hearing was to provide an opportunity for people to give formal oral testimony and comment on the proposed permit, DEIS, and SIZ applications. Written comments receive the same consideration as oral testimony. The open house, workshop, and public hearing began at 10 a.m. and concluded when public testimony was complete. Location and time open house, workshop, and public hearing:

South Bend:

December 02, 2014
Starts at: 10 A.M.
Willapa Harbor Community Center
916 W First Street
South Bend, WA 98586

Public Comment on Draft Environmental Impact Statement Scoping (January 2 - February 15, 2014)

A 45-day public comment period on scoping for the draft Environmental Impact Statement (EIS) began January 02, 2014 and ended at 5 pm (or postmark if mailed) February 15, 2014.

The purpose of scoping was to determine the "scope" or content of the EIS. Scope defines the environmental impacts and alternatives that need to be evaluated.

An open house and workshop was held on, Saturday, February 1, 2014. The purpose of the open house and workshop was to answer questions, provide information, and accept comments on the scope of the EIS.

The Willapa/Grays Harbor Oyster Growers Association (the Association) submitted an application to the Washington State Department of Ecology for an NPDES permit to allow the application of imidacloprid in an area limited to Willapa Bay and Grays Harbor. Imidacloprid is a pesticide used to control burrowing shrimp (Neotrypaea californiensis and Upogebia pugettensis) on commercial shellfish beds. The proposed NPDES permit would include specific conditions to regulate discharge of the pesticide.

Public Comment Documents


Burrowing shrimp disrupt shellfish beds, which makes them unusable for aquaculture. Imidacloprid is a pesticide that disrupts the burrowing shrimps’ ability to maintain their burrows. Controlling the number of burrowing shrimp helps maintain the continued productive aquaculture of shellfish.

The Environmental Protection Agency has registered imidacloprid for use on commercial shellfish beds only in Willapa Bay and Grays Harbor for the control of burrowing shrimp.

Studies have been done on the impacts of imidacloprid application in Willapa Bay and Grays Harbor, as allowed by the Experimental Use section of the current NPDES permit for the pesticide carbaryl. These studies helped to inform the Risk Assessment done by Compliance Services International and funded by the Association. The Risk Assessment can be found here: Risk Assessment for Imidacloprid.

Oysters in basket after harvest.