The Seattle District DMMO is the main point of contact for the interagency Dredged Material Management Program (DMMP). The DMMP brings together agencies with roles in management and regulation of dredged material to streamline testing and decision-making. The DMMP has no direct regulatory authority; it serves to streamline the process for dredged material evaluation and management.
The DMMP reviews proposed dredging in Washington State: in Puget Sound, Grays Harbor & Willapa Bay, the Washington side of the lower Columbia River (with the exception of port districts); and other marine and freshwater locations.
This website is updated frequently with meeting announcements, program information and decision documents. Please check back frequently.
Contact: PO Box 3755, Seattle WA 98124-3755 DMMOteam@usace.army.mil 206-764-6083 / -6550 / -6945 / -6713