Onondaga Lake has undergone a massive remediation effort, involving the removal of 2.2 million cubic yards of contaminated sediment. The contaminated mud was dewatered in geotextile tubes, over a three year period, from 2012 - 2014. IAI was responsible for operations and maintenance management of the sediment dewatering system, including screening, … [Read more...]
Coal Fines Dredging & Dewatering Project
IAI utilized a 445 horsepower, 12 inch diameter auger dredge with a 12 inch diameter inline booster pump to remove coal fines from an impoundment that was filling to capacity at a mining facility in southern Illinois. During day time hours, mine flow was combined with the dredge flow feeding the geotextile tubes dewatering operation, for a total flow of … [Read more...]
Borrow Pit Remediation
During this project, 14,000 cubic yards of contaminated sediment was hydraulically dredged from a former borrow pit and dewatered in geotextile tubes. An existing asphalt parking lot was converted into a geotextile tube laydown area with the installation of temporary sand berms and a high density polyethylene (HDPE) liner. Eighty foot circumference … [Read more...]
Fond du Lac River & Marina Maintenance Dredging
Summary: Approximately 16,000 cubic yards of accumulated soft sediment, silt and natural clay were hydraulically dredged from the river and marina to increase the navigable depth by four feet. Geotextile tubes used to dewater the dredged sediment were staged in two municipal parking lots along the river. The active dredging phase of the project took place … [Read more...]
Conner Creek CSO Dredging Project
IAI dredged 180,000 cubic yards of in-situ material from Conner Creek to create capacity for a new combined sewage overflow treatment facility. The project involved the removal of approximately 100,000 cubic yards of contaminated sediments utilizing an 8 inch diameter swinging ladder dredge and an 8 inch diameter auger dredge. A specially designed header … [Read more...]
