In 2015, the Lower Pond CCR Dredging Project was performed at a power generation station in Lansing, IA. IAI was selected to provide dredging and bypass pumping operations services for the project. IAI utilized our 8-in. diameter auger dredge to remove about 2,000 cubic yards of coal combustion residuals (CCR, or coal ash) from the Lower Pond, to prepare … [Read more...]
Dredging
IAI provides hydraulic dredging services for lagoons, impoundments, ponds, rivers and lakes. IAI has self-performed environmental and maintenance dredging projects, with or without dredged material dewatering and water treatment services. See examples of our project work here.
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...]
Coal Ash Waste Dredging
IAI utilized an 8 inch diameter auger dredge with an 8 inch inline booster pump to remove 20,000 cubic yards of solidified coal ash from a runoff water management pond at a coal fired electricity generation plant in Mississippi. Runoff from an adjacent coal ash pile had carried ash waste into the pond and had reduced the depth of the pond. A temporary … [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...]
