Construction of a Contained Aquatic Disposal Facility End Dike Contractor's Perspective
Type:
Presented during:
WODCON XVIII - 2007 Orlando, Florida, USA
Authors:
Smith
Abstract: There is a contaminated sediment site on the St. Louis River, which flows into Lake Superior, forming the Duluth, Minnesota/Superior, Wisconsin Harbor. The site was used for heavy industry since the turn of 20th century. The primary pollutant is coal tar (PAH’s).
As the selected contractor, our task was to construct a Contained Aquatic Disposal Facility (CAD), a stone dike with a fabric/clay liner, across an existing deep-water slip that was adjacent to the primary Area of Concern (AOC). This would create a disposal facility large enough to hold the dredged contaminated material from the primary AOC.
The project was completed ahead of schedule and within budget. This was primarily due to amiable relationships between the Contractor, Design Engineers and Construction Managers. A “Partnering “ relationship was created between the three firms, heading off potential problems and design changes and avoiding costly delays.
Keywords: Turbidity curtain, pile driving, stone placement, fabric/clay liner, partnering, contaminated sediment.