Rosen, G., D.B. Chadwick, M.A. Colvin, C. Stransky, A. Burton, J. Radford, H. Bailey, et al.
SPAWAR Technical Report 3052, ESTCP Project ER-201130, 278 pp, 2017

The Sediment Ecosystem Assessment Protocol (SEAP), an integrated ecological risk assessment approach developed under SERDP Project ER-1550, is based on the performance of a field-deployed device referred to as the Sediment Ecotoxicity Assessment Ring (SEA Ring). SEAP technology integrates in situ biological uptake and effects measures with passive sampling devices and physicochemical tools to assess the sediment-water interface, surficial sediment, overlying water and advective exposure pathways at contaminated sediment sites. Minor modifications also allow for direct application to surface water exposure pathway assessment. The commercially available SEA Ring developed and refined under this project consists of a circular carousel capable of housing an array of in situ bioassay chambers and passive sampling devices. The SEA Ring represents an alternative to traditional lab-based approaches to toxicity and bioaccumulation testing. Field demonstrations were conducted utilizing two different commercial prototypes of the SEA Ring for in situ bioaccumulation or toxicity testing at the Puget Sound Naval Shipyard and Intermediate Maintenance Facility; the Marine Corps Base in Quantico, VA; and Naval Base San Diego. https://www.estcp.com/content/download/42177/402168/file/ER-201130%20Final%20Report.pdf