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Housatonic River Upper Half-Mile Remediation This extensive sheeting project involved removing bank soil and river sediments, and river restoration of upper ½ mile of the Housatonic River in Pittsfield, MA. Maxymillian Technologies' (MT) extensive project activities included obtaining necessary permits, clearing, fencing and tracking pad installation, erosion and dust control, excavation, cofferdam and earth support construction (sheeting), outfall and swale installation, dewatering, sediment and bank removal, materials handling, and site restoration. By project's end, MT drove 4000 lineal feet of sheeting, 16 feet into the ground. MT installed sheeting in a contiguous series of two optimally designed cells of 250-1000 lf to achieve excavation and water diversion stability. The cells allowed MT to excavate PCB contaminated soils without cross contaminating into clean areas. While the cells were in dry condition, MT employed a small PC 90, lowered by crane into the cofferdam, to excavate river sediments into a temporary staging area for decanting. MT then used a large long-boom excavator with 75' reach to load the sediments from the river. MT used two bypass pumps to divert stormwater discharged around the cells. All soils were carefully segregated, decanted, and sampled prior to off-site disposal. MT covered all stockpiles with Poly sheeting to prevent spread of contamination. MT thoroughly decontaminated and inspected transport trucks prior to their leaving the site. Water resulting from dewatering and decanting was transported through MT installed piping and disposed of at the appropriate treatment facilities. In each river segment, upon completion of excavation, sampling, and off-site disposal, MT implemented extensive site restoration activities to replicate the river's habitat. Riverbank areas were restored with capping layers such as geotextile, sandy loam, topsoil and revegetation.
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Long-boom excavator with Clamshell bucket utilized to minimize environmental impacts 
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