- The Dredged Material Management Program manages disposal within Puget Sound, Strait of Juan de Fuca, and coastal embayments of the Grays Harbor and Willapa Bay sites.
- The Columbia River Disposal Program manages the disposal of dredged materials on the Washington side of the river.
Before dredgers may take dredged material to one of DNR’s unconfined open-water dredged material disposal sites, they must obtain a valid Site Use Authorization (SUA) from the DNR’s DMMP office. View DNR’s Application Requirements, and Site Use Application for obtaining a SUA.
DNR is committed to protecting the aquatic environment through stringent oversight of all disposal activities occurring under a SUA. DNR accomplishes this by imposing specific reporting requirements for every load of dredged material taken to one of DNR’s unconfined open-water dredged material disposal sites. Disposal Site Report Use and Monthly Disposal Statement forms once completed may be submitted via email, fax, courier, or USPS.
Users of any of DNR’s unconfined open-water dredged material disposal sites must pay disposal fees, which are assessed at a per cubic yard rate and subject to a minimum application fee. These fees are authorized under RCW 79.105.520, and defined under WAC 332-30-166. View the current Fee Structure. — (pdf) 319kb
Aquatic Resources Division
ATTN: Celia Barton, DMMP Manager
1111 Washington Street SE
P.O. Box 47027
Olympia, WA 98504-7027