This project was completed for the purpose of removing highly PCB-contaminated sediment from the walls and floors of a raceway system located in a former industrial property in Lawrence, MA. IAI utilized a specially equipped electrically powered hydraulic dredge to remove the contaminated sediment from the sub-surface and external raceways, dewatered the … [Read more...]
Coal Ash (Fly Ash) Pond Dredging
IAI utilized an 8 inch diameter auger dredge to remove 25,000 cubic yards of coal ash (or fly ash) sludge from an industrial settling pond at a coal-fired electricity generation plant in Lumberton, North Carolina. The coal ash was dredged directly into geotextile tubes, which were deployed around the perimeter of the same pond. The filled geotextile tubes, … [Read more...]
Coal Ash Maintenance Dredging
IAI was responsible for dredging approximately 20,000 cubic yards of coal ash (or fly ash) from a pond at a power plant in Tonawanda, New York. Hydraulic dredging of the 7.3 acre pond was completed over a 5 week period. The dredged material was dewatered using a Total Clean System. Effluent from the Total Clean unit was injected with polymer, then allowed to … [Read more...]
Lake Sinissippi Wetland Rehabilitation
Scope of Work IAI was contracted by the Lake Sinissippi Improvement District to dredge the lake, and design and install an erosion control berm which would isolate a 40-acre portion of man-made Lake Sinissippi from an adjacent wetland. The project was conducted to remediate the marsh wetland environment, which had been deteriorated by a non-game fish … [Read more...]
Industrial Wastewater Lagoon Dredging
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...]
