TY - GEN
T1 - Active capping demonstration project in anacostia DC
AU - Reible, Danny
AU - David, W.
AU - Roberts, Keegan
AU - Zhu, Yuewei
PY - 2004
Y1 - 2004
N2 - Innovative active capping techniques offering both containment and treatment are effective, low-cost means of managing the sediments that endanger the health of our nation's waterways. This project seeks to advance the implementation and acceptance of these under-utilized technologies by validating their efficacy at the Anacostia River where historic industrial, municipal, and military activities have resulted in toxic levels of PAHs, PCBs, metals, and other contaminants. Objectives are to demonstrate, on a field scale, the ability to design, construct and place caps that will provide long-term treatment of sediment contaminants while simultaneously providing containment. Cap materials under consideration included Aquablok, a commercial product designed to reduce the permeability at the sediment-water interface, zero-valent iron and Bion soil, which encourage reductive dechlorination conditions, apatite, designed to sorb or bind metals and coke breeze and an organo modified clay, both capable of absorbing hydrophobic organic contaminants. After treatability testing, Aquablok, apatite and coke breeze have been selected for placement in the demonstration which will occur in fall 2003. Evaluation of post-placement effectiveness is expected to take place through 2005. A summary of activities and results to-date will be presented.
AB - Innovative active capping techniques offering both containment and treatment are effective, low-cost means of managing the sediments that endanger the health of our nation's waterways. This project seeks to advance the implementation and acceptance of these under-utilized technologies by validating their efficacy at the Anacostia River where historic industrial, municipal, and military activities have resulted in toxic levels of PAHs, PCBs, metals, and other contaminants. Objectives are to demonstrate, on a field scale, the ability to design, construct and place caps that will provide long-term treatment of sediment contaminants while simultaneously providing containment. Cap materials under consideration included Aquablok, a commercial product designed to reduce the permeability at the sediment-water interface, zero-valent iron and Bion soil, which encourage reductive dechlorination conditions, apatite, designed to sorb or bind metals and coke breeze and an organo modified clay, both capable of absorbing hydrophobic organic contaminants. After treatability testing, Aquablok, apatite and coke breeze have been selected for placement in the demonstration which will occur in fall 2003. Evaluation of post-placement effectiveness is expected to take place through 2005. A summary of activities and results to-date will be presented.
UR - http://www.scopus.com/inward/record.url?scp=23844485240&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:23844485240
SN - 1574771434
SN - 9781574771435
T3 - Remediation of Contaminated Sediments - 2003: Proceedings of the Second International Conference on Remediation of Contaminated Sediments
SP - 925
EP - 931
BT - Remediation of Contaminated Sediments - 2003
A2 - Pellei, M.
A2 - Porta, A.
Y2 - 30 September 2003 through 3 October 2003
ER -