The objective of this Statement of Need (SON) was to improve our management of stormwater, both through an improved understanding of the impact of stormwater to sediment recontamination and recovery as well as through improved stormwater control to prevent recontamination. Specific objectives included:

• Improved understanding of the source and rate of change in chemical concentrations on remediated sediment surfaces and approaches to quantify such changes.
• Improved understanding of the relationships between stormwater-associated sediment load, dissolved-phase contaminant concentrations, contaminant-induced benthic impairment, and sediment recontamination or recovery.
• Development of innovative stormwater control and treatment technologies that improve stormwater management, prevent sediment recontamination, and add to the existing water supply.
• Development of watershed modeling of new stormwater control processes that focus on sediment-related contaminants to provide information on the efficiency needed and the number of systems deployed to prevent sediment recontamination and increase stormwater harvesting.

The focus of this SON was the impact of stormwater to aquatic sediments, either marine, estuarine, brackish, or freshwater. Contaminants of concern included the predominant contaminants at Department of Defense sites, such as PAHs, PCBs and metals, but also emerging contaminants of concern such as per- and polyfluorinated alkyl substances. Proposers should have clearly stated the contaminants that would be addressed by their proposed research. Proposers should have clearly delineated how new approaches differ and improve upon current practices.

Research proposals could have involved laboratory-, bench-, and field-scale studies, as well as computer modeling to support such efforts; however, all proposals must have demonstrated how the proposed research would ultimately be used to improve management of stormwater and its impact on sediment sites. Proposers should have addressed one or multiple objectives listed above. SERDP co-sponsored a Workshop on Research and Development Needs for Long-Term Management of Contaminated Sediments in August 2016 that identified high priority research topics in this area. A more detailed description of these issues can be found in the workshop report. It was strongly encouraged for proposers to review the workshop report for additional detail.

Funded projects will appear below as project overviews are posted to the website.