IAI served as sediment dewatering and water treatment subcontractor on the Waukegan Harbor OU1 project. The project removed 117,278 cubic yards of PCBs-contaminated sediment from Waukegan Harbor, in Waukegan, Illinois. Sediment was hydraulically dredged from the harbor and transferred to the landside facility for processing and disposal. The sediment … [Read more...]
Geotextile Tube Dewatering
IAI has installed 680,000 lineal feet of geotextile tubes (and counting), to dewater 4.9 million cubic yards of material, in projects throughout the United States. We have used geotextile tubes to dewater both clean and contaminated sediments, industrial waste, coal ash (CCR), biosolids, sludge, and industrial waste products. See examples of our geotextile tube dewatering projects, below.
The Ashtabula River Remediation was the largest project to be funded through the Great Lakes Legacy Act (GLLA) at the time of performance. The project was executed in two phases by a team of contractors, working over three dredging seasons. At project close, approximately 640,000 cubic yards of contaminated soft sediments had been removed from the lower … [Read more...]
The West Branch Grand Calumet River and Roxana Marsh Reaches 1 & 2 Remedial Action Project involves hydraulic dredging to remove contaminated sediment, geotextile tube dewatering of the dredged material, bulking and removal of the dewatered sediment from the site, and treatment of the geotextile tube weep water. IAI is responsible for the sediment … [Read more...]
IAI was contracted to remediate two ponds at the site of this former wood-treating facility. The ponds contained a layer of thick, black oily sludge, contaminated with creosote, polyaromatic hydrocarbons and metals, which had to be removed. To remediate the ponds, IAI removed the oily sludge with a submersible pump, and dewatered the slurry in geotextile … [Read more...]
IAI hydraulically dredged about 18,000 cubic yards of industrial process biosolids from two wastewater treatment lagoons, utilizing a cable-driven 8 inch diameter auger dredge. The dredged sludge was conditioned with flocculating chemicals and dewatered in about 2,400 lineal feet of 75 foot circumference geotextile tubes. The geotextile tubes were stacked in … [Read more...]