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2013 DMMP User Manual

Updated DMMP User Manual in its entirely available as a 3 mb PDF file.

Contact the DMMO

Mailing Address:
Seattle District
Dredged Material Management Office
PO Box 3755
Seattle, WA  98124-3755



About the User Manual

The procedures in this User Manual replace guidance in all previous versions of the DMMP User Manual.  The updates apply to all projects in Puget Sound, on the Washington Coast, the north side of the Columbia River, and all other water bodies within the State of Washington.

This edition of the DMMP User Manual reflects technical and policy updates that have occurred through the sediment management annual review meeting process and public workshops. It is considered to be a living document and is revised periodically as needed to reflect changes made through the public review process.

To download the entire User Manual click the image to the left.  For separate chapters use the menu below.  Each chapter includes all relevant figures and tables.

Some of the most frequently referenced figures and tables are also posted separately in the menus below.

User Manual by Chapters, Figures and Tables

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UM Update Log

  • November 18, 2013 - Chapter 8, page 8-44 corrected.  Previous version omitted fluoranthene from list of HPAHs, and had LPAH and HPAH constituents switched.
  • August 16, 2013 - Table 7-2 (Sample Storage Criteria) updated with current practices.  Date on updated table is Aug. 16, 2013. This corrected table supercedes all previous versions of Table 7-2.
  • August 14, 2013 - Table 8-2 (DMMP COCs and Regulatory Guidelines) updated with correction:  SL2 for anthracene is 1,600 mg/kg, not 1,200.  Date on updated table is Aug. 14, 2013.  This corrected table supercedes all previous versions of Table 8-2.


Seattle District has developed statistical analysis software called BioStat to facilitate bioassay statistical comparisons with appropriate reference sediments. Submittal of screen shots or statistical reports from BioStat will provide the documentation necessary to support summarized interpretations of bioassay data in the sediment characterization report.

To download a .zip file with all the files necessary to run BioStat, click here