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Full Project Description Located at: view PDF

Site Location: US EPA Region 3 Anacostia River, Washington, D.C.

Project Status: Completed April 2004

Setting / Purpose: River, tidally influenced (freshwater). EPA SITE Program (Superfund Innovative Technology Evaluation). Demonstrated encapsulation of contaminated sediments, within the context of an “active caps” designed to accomplish contaminant treatment concurrent with encapsulation

Contaminant(s) of Concern: PAHs (polynuclear aromatic hydrocarbons); PCBs (polychlorinated biphenyls); and metals. AquaBlok Cap Design / Site Area: Multi-layer design. Design comprised of a basal layer of hydrated AquaBlok (~4 inches or ~10 cm in target thickness) covered by a surficial layer of sand (~8 inches or ~20 cm in target thickness). Site area was 745 square meters (8,000 square feet).

Method of AquaBlok Placement: Barge-based crane plus clamshell.

Peruse EPA Region 3 Website