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DMMP Program Updates

Adaptation is an integral part of the Dredged Material Management Program as science evolves, regulations change, and experience and data inform us. Program updates and changes are proposed at the Sediment Management Annual Review Meeting (SMARM) by agencies or interested parties. All proposals are either accepted, dropped, or modified based on feedback from the SMARM process.
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Seattle District (CENWS)
Dredged Material Management Office
4735 E. Marginal Way S. Bldg. 1202
Seattle, WA 98134-2388
 

White Paper Updates to Dredged Material Management Program

Updates are documented in the dropdown menus below, with links to the final (PDF) papers.

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  • Papers that were not implemented, are outdated, or have been updated with subsequent papers, are shown in gray.
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All Updates to the DMMP Program

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Expand List item 28518Collapse List item 28518  Bioaccumulatives and Bioaccumulation

 

Year Title Description Paper Type Status
2024 Dioxin/Furan Bioaccumulation Reference Sample Locations Describes recommended locations for collection of reference samples for bioaccumulation testing for Dioxins./Furans Clarification Will be incorporated in next UM Update
2009
 
 Updates metals on List 1 to include only lead, arsenic, mercury, selenium and TBT.  Associated BTs will be revised at a later time. Clarification Incorporated in User Manual
2009 Bioaccumulation Protocol Clarifications (originally implemented 2000; includes 2008 & 2009 updates) Adds additional discussion on statistics and alpha level, corrects alpha level for test tissue concentration comparison with reference sediment, and extends to 45-day exposures for mercury and fluoranthene. Clarification/SMS Technical Support Incorporated in User Manual
2007/1998 Technical Basis for Revisions to the DMMP Bioaccumulation Chemicals of Concern List (final Jan. 07) Describes the technical basis for establishment of DMMP bioaccumulative chemicals of concern and provides lists of BCOCs. Technical support to Issue paper Incorporated in User Manual
2003 Revised BCOC List (updated and corrected)   Technical Support to Issue Paper Superseded
2003 Revisions to the Bioaccumulative Contaminants of Concern (BCOC) List   Issue Superseded
1998 Technical Support Document for Revision of the DMMP Bioaccumulative Chemicals of Concern List   Technical support to Issue paper Superseded
1998 Bioaccumulative Chemicals of Concern List Revision   Issue Outdated
1996 Bioaccumulation Testing Refinements Adds Nephtys as an approved bioaccumulation test species and allows for co-testing of Macoma and Nephtys. Clarification Incorporated in User Manual
1994 Bioaccumulation Testing Refinements: Addition of a Second Species Adds a second bioaccumulation test with an adult deposit-feeding polychaete.  Approved species include Nereis virens and Arenicola marina. Issue Partially superseded
Expand List item 28513Collapse List item 28513  Bioassay Species, Methods and Guidance

 

Year Title Description Paper Type Status
2025 Statistical Analysis of Bioassay Data: Comparison of BioStat and EDAT Documents observed differences in statistical operations between BioStat and Ecology's redeveloped EIM Data Analysis Tool (EDAT). Issue Up to date
2024 Adapting to Supply Challenges and Species Substitution for the 10-Day Amphipod Bioassay DMMP/TCP paper allows use of Leptocheirus plumulosus in the 10-Day Amphipod test when other species are unavailable Issue Incorporated in User Manual
2020 Establishes a recommended pH range for the larval bioassay and describes situations when acclimation to saltwater conditions may be needed. Clarification/Issue Incorporated in User Manual
2015 Modification to Ammonia and Sulfide Triggers for Purging and Reference Toxicant Testing for Marine Bioassays Establishes reference toxicant and purging triggers for unionized ammonia and hydrogen sulfides for marine bioassays. Clarification Incorporated in User Manual
2015 Freshwater Bioassays Species, Endpoint, Methods and Interpretive Criteria (update of 2014 paper) Adopts freshwater bioassays and interpretive criteria. DMMP/RSET Clarification Incorporated in User Manual
2013 Bioassay Endpoint Refinements: Bivalve Larval and Neanthes Growth Bioassays Establishes resuspension protocol for larval bioassay and ash-free dry weight endpoint for Neanthes bioassay. Clarification Incorporated in User Manual
2008 Reference Areas for Freshwater Bioassays DMMP has no plans to establish programmatic freshwater reference areas. Clarification Up to date
2005 Sediment Larval Test Species Recommended for Toxicity Testing by the DMMP Program Establishes Mytilus galloprovincialis and Dendraster exentricus as the recommended species for the larval bioassay. Clarification Incorporated in User Manual
2004 Ammonia and Sulfide Guidance Relative to Neanthes Growth Bioassay   Clarification Superseded by 2015 paper
2002 Ammonia and Amphipod Toxicity Testing   Clarification Superseded by 2015 paper
2001 Reporting Ammonia LC50 Data for Larval and Amphipod Bioassays   Clarification Superseded by 2015 paper
1999 Use Of Amphipod, Eohaustorius estuarius, Relative to Grain Size and Salinity Describes appropriate amphipod species based on clay content and salinity. Clarification Incorporated in User Manual
1998 BIOSTAT Software for the Analysis Of DMMP/SMS Bioassay Data Adopts use of Levene's test and introduces BioStat software. Clarification Incorporated in User Manual
1997 Selection of Negative Control Sediments and Use of Control Sediments as Reference Sediments Describes the appropriate type of negative control sediment. Clarification Incorporated in User Manual
1996 Statistical Evaluation of Bioassay Results Describes statistical evaluations and basis for bioassay interpretations. Clarification Partially superseded
1996 Neanthes 20-Day Bioassay - Further Clarification on Negative Control Growth Standard, Initial Size, and Feeding Protocol Confirms negative control standard, worm size requirements and feeding protocol for Neanthes bioassay. Clarification Up to date
1995 Interim Growth Rate and Mortality Guidelines for the Neanthes 20-Day Growth Bioassay Establishes reference mortality standard, interim control growth rate and worm size requirements. Clarification Partially superseded
1995 In-Batch Testing for Reference Sediments for PSDDA Bioassays In-batch testing of a bioassay reference sediment is needed with all test sediments. Clarification Incorporated in User Manual
1994 Restriction on exotic species importation Biological laboratories must follow regulations concerning the importation and release of exotic  species. Clarification Up to date
1994 Interim Revised Performance Standards for the Sediment Larval Bioassay Revised negative control performance standard to at least 70% normal. Revised Clarification Incorporated in User Manual
1994 Neanthes 20-Day Bioassay - Interpretation Clarifications Establishes use of growth rate (mg/day) endpoint and interpretive guidelines for both dispersive and non-dispersive disposal. Clarification Incorporated in User Manual
1993 Species Substitution for the 10-Day Amphipod Bioassay Allows use of Eohaustorius estuarius and Ampelisca abdita under certain conditions. Clarification Incorporated in User Manual
1993 The Neanthes 20-Day Bioassay - Requirements for Ammonia/Sulfides Monitoring and Initial Weight   Clarification Outdated
1992 Implementation of the Neanthes 20-Day Sediment Bioassay Establishes use of the 20-day Neanthes growth bioassay. Issue Incorporated in User Manual
1991 Modifications to Holding Time for Biological Testing Establishes 8 week holding time for bioassays. Issue Incorporated in User Manual
1991 Echinoderm Embryo Sediment Bioassay Protocol Clarifies proposal for running the echinoderm embryo bioassay. Clarification Incorporated in User Manual
1991 PSDDA Requirement to Collect and Report Amphipod Reburial Data Requires collection of amphipod reburial data. Clarification Incorporated in User Manual
1990 Wet Sieving Method for Reference Sediment Grain Size Matching   Clarification Outdated
1990 Requirements for Analyzing Sediment Conventionals in Reference Areas and Water Quality in Bioassays Requires grain size analysis of reference sediment and adds ammonia/sulfides measurement to water quality data for all three bioassays. Clarification Incorporated in User Manual
1990 Activities to Provide Better Reference Areas Describes analysis requirements when using a new reference area. Status Incorporated in User Manual
Expand List item 28514Collapse List item 28514  Chemical Testing Methods and Regulatory Guidelines

 

Year Title Description Paper Type Status
2021 Extension of Holding Time for Total Mercury Adds holding time for total mercury of 1 year at -18 °C for projects where elemental mercury is not a concern.  Maintains holding time of 28 days at 4 +/- 2 °C. Clarification Incorporated in User Manual
2021 PAH Guidelines: Considerations for Dredged Material Testing and Disposal Site Monitoring in Puget Sound cPAHs will not be evaluated by DMMP for disposal site monitoring or evaluation of projects for open-water disposal in Puget Sound.  No fish PAH screening level will be developed. Clarification Incorporated in User Manual
2021 Updates to Chemical Analysis and Data Quality Assurance Procedures Under the DMMP Updates dioxin QA/QC procedures and  analytical methods accepted by DMMP. Clarification Incorporated in User Manual
2020 Follow-up to the 2011 DMMP Clarification Paper: Marine Sediment Quality Screening Levels: Adopting RSET Marine SLs for Use in DMMP Completes adoption of REST SLs for hexachlorobutadiene, total chlordane, dieldrin and heptachlor and drops group 1 compounds from disposal site monitoring. Clarification Incorporated in User Manual
2016 Adopts freshwater screening levels from the SEF. Clarification Incorporated in User Manual
2016 Adds BPJ for projects with SL exceedances for benzyl alcohol only. Clarification Incorporated in User Manual
2016 Dioxin testing for dispersive disposal sites uses same reason-to-believe guidelines as non-dispersive sites. Clarification Incorporated in User Manual
2015 Reporting Summed Concentrations with J and/or U Flags Provides examples how to report summed concentrations with J and/or U Flags. Clarification Incorporated in User Manual
2015 Tributyltin (TBT) Measurement Basis Bulk sediment is the standard for TBT analysis, but porewater analysis allowed. Clarification Incorporated in User Manual
2015 Proposal to Revise Freshwater Sediment Screening Levels Adopts RSET freshwater benthic screening levels and consideration of background concentrations of metals in freshwater sediments. RSET White Paper Partially adopted
2012 Use of Practical Quantitation Limits (PQLs) to Establish Cleanup Standards for Contaminated Sediment Sites under the Sediment Management Standards (SMS)   SMS Issue Outdated
2011 Marine Sediment Quality Screening Levels: Adopting RSET Marine SLs for Use in DMMP Updates SLs to be consistent with RSET. Clarification Incorporated in User Manual
2010 New Interim Guidelines for Dioxins - revised 2016 Establishes Puget Sound disposal site management objective of 4 pptr TEQ. Issue Incorporated in User Manual
2010 Revised Supplemental Information on Polychlorinated Dioxins and Furans (PCDD/F) For Use in Preparing a Quality Assurance Project Plan (QAPP)   Clarification and technical guidelines Outdated
2010 Polychlorinated Dioxins and Furans (PCDD/F): Revisions to the Supplemental Quality Assurance Project Plan (SQAPP)   Clarification Outdated
2008 Update on Pyrethroids and PBDE Analysis Provides information on pyrethroids and PBDEs prepared by RSET. Status Up to date
2007 Chlordane Analysis and Reporting Defines total chlordane and provides details on reporting all five chlordane constituents. Clarification Incorporated in User Manual
2007 Benzofluoranthenes Analysis and Reporting B-, J-, and K-isomers of benzofluoranthene must be reported and summed. Clarification Incorporated in User Manual
2005 Clarification of Detection Limits and Reporting Limits in the DMMP Laboratories must report estimated concentrations between MRL and MDL, and must report MDL and MRLs for all "U" flagged results. Clarification Incorporated in User Manual
2004 New DMMP Guidelines for Phthalates Updates SLs for phthalates based on 1998 LAET. Clarification Incorporated in User Manual
2001 Chemical Analysis of Archived Sediment Samples No decanting allowed prior to analysis of archived sediment. Clarification Up to date
1999 Blank Correction for Method Blank Contaminated Chemical Samples Blank correction is not allowed. Clarification Up to date
1998 TBT Analysis: Clarification of Interstitial Water Extraction and Analysis Methods – Interim Detailed instructions on interstitial water sample collection, extraction and analysis of TBT. Clarification Incorporated in User Manual
1997 Revisions to DMMP Screening and Maximum Level Guidelines DMMP adopts new , SLs, MLs and BTs based on 1994 AETs. Issue Partially superseded
1996 Testing, Reporting and Evaluation Of TBT Data in PSDDA And SMS Porewater analysis of TBT recommended, 0.15 ug/L TBT SL established. Issue Partially superseded
1994 Use of Alternate Technologies under the Sediment Management Standards, Chapter 173-204 WAC Establishes process for approval of alternate technologies, such as alternate bioassay test, on a case-by-case basis. Clarification Up to date
1992 Selective Ion Monitoring (SIM) Analysis: Quality Assurance/Control Requirements Allows use of selected ion monitoring. Clarification Incorporated in User Manual
1991 Modifications to the Chemical Testing Quality Assurance Guidelines   Clarification Outdated, see User Manual for current info
1991 Revised Modifications to Holding Times for PSDDA Chemical Analyses Establishes hold times at 4 °C for PSDDA chemical analysis. Clarification Partially superseded
Expand List item 28515Collapse List item 28515  Disposal Site Use and Monitoring

 

Year Title Description Paper Type Status
2022 Disposal Site History 1989 - 2021: Use, Monitoring, and Issues Summarizes 34 years of site use and monitoring results at the eight Puget Sound disposal sites  Status Up to date
2022 Revised Monitoring Framework for Puget Sound DMMP Non-Dispersive Disposal Sites Documents major revisions to the monitoring framework for non-dispersive disposal sites in Puget Sound. Issue Up to date
2021 Updates to DMMP Disposal Site Monitoring Triggers in Puget Sound Establishes monitoring trigger for A/K and Bellingham at 150,000 CY, for EB, CB and PG at 500,000 CY and removes temporal trigger. Clarification Incorporated in User Manual
2015 Debris Screening Requirements for Dredged Material Disposed at Open-Water Sites Establishes requirement to use a 1 foot by 1 foot grizzly during dredging for all projects except where the project can demonstrate that debris is not present. Clarification Incorporated in User Manual
2009 Summary of DNR Site Use Authorization Requirements   Clarification Outdated
2008 Use of Flat-Top Barges and DMMP Dispersive Disposal Sites Flat-top barges are allowed at dispersive disposal sites when safety conditions allow, but are never allowed at the non-dispersive disposal sites. Clarification Incorporated in User Manual
2007 Management of the Commencement Bay Non-dispersive Disposal Site

Updates coordinates for disposal in CB.

 Clarification Incorporated in User Manual
2006 Volume Trigger Guideline for Monitoring at the CB Open Water Disposal Site Increases monitoring trigger at CB to 500,000 cy. Issue Up to date
2005 Summary of Site Use Authorization Requirements for DNR   Clarification Superseded
2004/2010 DMMP Disposal Site Coordinates Update and Clarification (updated 2010) Updates VTS status and clarifies disposal coordinates for all sites. Clarification Partially outdated, current info in 2021 User Manual
2002 Increasing the Volume Trigger for Monitoring of Non-Dispersive Disposal Sites Increases monitoring trigger at PG and EB to 500,000 cy. Issue Up to date
1999 Discontinuation of Corps and DNR Supplied GPS for Open Water Disposal Corps and DNR will no longer supply GPS units for dredging contractors. Clarification Up to date
1997 Beneficial Use of Dredged Material   Clarification Outdated
1996 Adjustments to Site Monitoring   Issue Superseded
1996 DGPS as Navigational Standard GPS replaces microwave navigation for sampling and monitoring activities. Clarification Incorporated in User Manual
1995 Refinements to PSDDA Post Disposal Monitoring Guidelines Institutes time trend analysis and perimeter statistical comparison to the SL as a means of determining off-site effects of dredged material. Issue Up to date
1993 DNR Disposal Site Use Permit Acquisition Protocol   Clarification Superseded
1992 Relocation of Port Gardner Benchmark Station Replaces benchmark station PGB02 with PGB09 for future monitoring events at Port Gardner. Clarification Up to date
1992 PSDDA Monitoring Plan and DY 1992 Elliott Bay Full Monitoring Replaces perimeter chemistry samples with triplicate analysis at four perimeter stations. Issue Partially superseded
1991 Management of the Port Gardner and Elliott Bay Sites Updates disposal coordinates for EB and clarifies that all material at PG is disposed at site's center coordinates. Clarification Incorporated in User Manual
1991 Environmental Monitoring Program Refinements  Adopts strategy of conducting SPI monitoring as soon as possible after disposal window closes, upfront analysis of sulfides due to holding time constraints, and discontinues use of Port Gardner benchmark station PGBO2. Clarification Partially superseded
Expand List item 28516Collapse List item 28516  SAPs and Sampling

 

Year Title Description Paper Type Status
2025 Recommended Overdepth for Sediment Characterizations and Updated Trigger Requirements For Z-Layer Analysis Documents the DMMP recommendation to characterize two feet of overdepth material and the required actions when proponents choose not to do so. Clarification Incorporated in User Manual
2016

Adoption of Elements of the Sediment Evaluation Framework for the Pacific Northwest for Use in the Dredged Material Management Program

 Adds very low rank with 10 year recency, SEF DMMU volume limits for non-port projects on the lower Columbia River, field sampling checklist and a tissue analysis table to the DMMP User Manual. Clarification Incorporated in User Manual
2005 Reporting of Sediment-Bound Contaminants: Standardization of Sieving and Analytical Procedures Describes sampling and analysis procedures for grain size analysis and establishes size categories for gravel, sand, silt and clay. DMMP/SMS Clarification Incorporated in User Manual
2003 Use of Interpolation Methods for Spatial Characterization of Sediment Chemical Contamination   SMS Clarification Outdated.  See current SCUM
1996 DGPS as Navigational Standard GPS replaces microwave navigation for sampling and monitoring activities. Clarification Incorporated in User Manual
1996 Dredged Material Volume Estimates Provides volume estimation guidelines (both before DMMP sampling and during dredging) to reduce exceedances of permitted dredging volumes. These include contingency factors, side-slope volumes, overdredge, recency of bathymetric data, and guidance on estimating in-situ volumes from barge volumes. Clarification Incorporated in User Manual
1995 Sampling and Testing Cost Relief for Small Projects Undergoing PSDDA Evaluation Increases no-test volume for LM and M ranked projects to 1000 cy and allows a reduced list of COCs for testing for projects <8,000 cy on a case-by-case basis. Clarification Incorporated in User Manual
1993 Site Histories in Sampling and Analysis Plans Describes the site history requirements for a sampling and analysis plan. Clarification Incorporated in User Manual
1993 Recommended Methods for Measuring TOC in Sediments Describes TOC method modification necessary for application to sediments. Clarification Incorporated in User Manual
1991 Modifications to Sampling Requirements for Deep Native Sediments Sampling may be reduced on a case-by-case basis for deep native sediments. Clarification Incorporated in User Manual
Expand List item 28517Collapse List item 28517  Program and Policy Updates

 

Year Title Description Paper Type Status
2026 Reaffirmation of the Environmental Information Management (EIM) System as the Regional Data Depository for Dredged Material Management Documents the Seattle and Portland Districts’ commitment to using the Washington State Department of Ecology’s (Ecology’s) Environmental Information Management (EIM) database as the central repository for relevant regional data for dredged material management. Clarification Up to date
2025 Recommended Overdepth for Sediment Characterizations and Updated Trigger Requirements For Z-Layer Analysis Documents the DMMP recommendation to characterize two feet of overdepth material and the required actions when proponents choose not to do so. Clarification Up to date
2025 Statistical Analysis of Bioassay Data: Comparison of BioStat and EDAT Documents observed differences in statistical operations between BioStat and Ecology's redeveloped EIM Data Analysis Tool (EDAT).  Issue Up to date
2022 Revised Monitoring Framework for Puget Sound DMMP Non-Dispersive Disposal Sites Documents major revisions to the monitoring framework for non-dispersive disposal sites in Puget Sound. Issue Up to date
2021 PAH Guidelines: Considerations for Dredged Material Testing and Disposal Site Monitoring in Puget Sound cPAHs will not be evaluated by DMMP for disposal site monitoring or evaluation of projects for open-water disposal in Puget Sound.  No fish PAH screening level will be developed. Clarification Incorporated in User Manual
2019 Description of Key Regulatory Guidelines on the Operation and Management of Non-Dispersive Open-Water Disposal Sites in Puget Sound Identifies and describes the four major areas with regulatory relevance with respect to the management of the disposal sites in Puget Sound. Information Incorporated in User Manual
2016 Updated Dioxin Testing Requirements for Dispersive Disposal Sites in Puget Sound Clarifies dioxin testing requirements for project proposing disposal at a dispersive site. Clarification Incorporated in User Manual
2016

Adoption of Elements of the Sediment Evaluation Framework for the Pacific Northwest for Use in the Dredged Material Management Program

Adds very low rank with 10 year recency, SEF DMMU volume limits for non-port projects on the lower Columbia River, field sampling checklist and a tissue analysis table to the DMMP User Manual. Clarification Incorporated in User Manual
2015 Debris Screening Requirements for Dredged Material Disposed at Open-Water Sites Establishes debris screening grid requirements for dredgers and criteria for exemption from screening requirement. Clarification Incorporated in User Manual
2015 Proposal to Revise Freshwater Sediment Screening Levels Adopts RSET freshwater benthic screening levels and consideration of background concentrations of metals in freshwater sediments. RSET White Paper Partially adopted
2014 Recency Guideline Modifications Increases recency for high ranked projects to 3 years, and incorporates frequency concept into recency. Clarification Incorporated in User Manual
2012 Use of Practical Quantitation Limits (PQLs) to Establish Cleanup Standards for Contaminated Sediment Sites under the Sediment Management Standards (SMS)   SMS Issue Outdated. See current SCUM
2012 Transition from DAIS to EIM EIM will be used to maintain database of dredging data. Clarification Incorporated in User Manual
2011 Marine Sediment Quality Screening Levels: Adopting RSET Marine SLs for Use in DMMP Updates several marine SLs to be consistent with RSET. Clarification Incorporated in User Manual
2010 New Interim Guidelines for Dioxins - revised 2016 Establishes guidelines for assessing dioxin in dredged material. Issue Incorporated in User Manual
2010 Revised Supplemental Information on Polychlorinated Dioxins and Furans (PCDD/F) For Use in Preparing a Quality Assurance Project Plan (QAPP)   Clarification and technical guidelines Outdated
2010 Sediments Exposed by Dredging (Z-layer) Testing Establishes a 2 foot thick z-layer sample. Clarification Incorporated in User Manual
2008 Quality of Post-Dredge Surfaces (Updated) Explains how post-dredge surface (z-layer) results will be interpreted by DMMP. Clarification Incorporated in User Manual
2008 Freshwater Sediment Guidelines Status   Status Outdated
2008 Update on Pyrethroids and PBDE Analysis Provides information on pyrethroids and PBDEs prepared by RSET. Status Up to date
2006 Volume Trigger Guideline for Monitoring at the CB Open Water Disposal Site Raises monitoring trigger for Commencement Bay to 500,000 CY. Issue Incorporated in User Manual
2005 Clarification of Detection Limits and Reporting Limits in the DMMP Estimated concentrations between MRL and MDL must be reported, both MDL and MRL must be reported for U-flagged results. Clarification Incorporated in User Manual
2005 Evaluation of Sediment Quality for Navigation, Cleanup or Both Explains relationship between DMMP and Clean-up for SAPs. Clarification Incorporated in User Manual
2005 Future of the SMARM Process: Reducing Levels of Effort   Issue Not implemented
2004 Tier 1 Suitability Determinations: Exclusions From Testing Establishes use of Clean Water Act testing exclusions. Clarification Incorporated in User Manual
2004/2010 DMMP Disposal Site Coordinates Update and Clarification (updated 2010) Updates disposal coordinates in Commencement Bay and VTS positioning. Clarification Partially outdated, current info in 2021 User Manual
2003 Recency Guideline Exceedances: Guidelines for Retesting in High Ranked Areas Outlines guidelines for re-testing in high ranked areas. Clarification Up to date
2003 Pre-Dredge Conference for Projects In Grays Harbor and Willapa Bay A pre-dredge conference is required for projects in Willapa Bay and Grays Harbor, as well as in Puget Sound. Clarification Incorporated in User Manual
2003 Determining When Material Above MHW/OHW Will be Characterized in DMMP Describes how to determine when sediments/soils can be considered dredged material. Clarification Up to date
2002 Increasing the Volume Trigger for Monitoring of Non-Dispersive Disposal Sites Raises monitoring trigger at EB and PG to 500,000 cy. Issue Up to date
2002 Recency Guidelines: Program Considerations   Clarification Superseded by 2014 paper
2001 DMMP Z-Sample Analysis Guidance and/or Post Dredge Monitoring Policy Describes when z-samples are required to be collected. Clarification Incorporated in User Manual
2001 Reporting Sediment Quality for Compliance with the SMS Rule (173-204 WAC)   Clarification Outdated
2001 Quality of Post-Dredge Sediment Surfaces   Clarification Superseded
2000 Purpose of Maximum Level (ML) - Clarification of Use in Regulatory Program Establishes flexibility for Tier IV testing of projects with ML exceedances. Clarification Incorporated in User Manual
1999 Discontinuation of Corps and DNR Supplied GPS for Open Water Disposal The Corps and DNR will no longer supply GPS units for project applicants. Clarification Up to date
1997 Revisions to DMMP Screening and Maximum Level Guidelines Updates SLs and MLs based on 1995 AET revisions. Issue Partially superseded
1997 Disposal Site Monitoring Chemical Evaluation Guidelines Establishes CTS and updates Commencement Bay baseline to 1995 data. Clarification Up to date
1997 Management of Wood Waste under DMMP and SMS Describes methods for managing wood waste under DMMP and SMS. Clarification Incorporated in User Manual
1997 Beneficial Use of Dredged Material   Clarification Outdated
1996 Small Dredging Projects at Outfalls Small projects removing sediments discharged from an outfall, or located directly adjacent to an outfall, may be given a "high" rank regardless of the rank of the general area. Clarification Partially superseded
1994 Coordination and Testing of Dredge Material for Beneficial Uses Projects Beneficial use projects should be brought to the DMMP early in project development and will be considered on a case-by-case basis. Clarification Incorporated in User Manual
1992 Improved Communication and Data Submittals   Clarification Outdated
1991 PSDDA Requirements for Program Review Reports And Meetings   Issue Outdated
1991 Environmental Laboratory Accreditation   Clarification Outdated
1991 Applicant Data Submittal Clarifies that both chemistry and biological data must be submitted to the DMMP when concurrent testing is conducted. Clarification Up to date