A series of planning, preparation, and land-based construction and support activities were performed in 2017 and 2018 to prepare for in-river construction. The planning activities were performed within the Arconic facility property and along/in the river and included the following:
- Expansion of the secure landfill on the Arconic Massena West property to provide for the safe storage of sediment and soils removed during the remedial action.
- Construction of the staging area just upstream of the Route 131 Bridge for handling of sediments and capping materials.
- Remediation of upland areas along the north shore of the river just downstream of the Alcoa Bridge.
- Preliminary capping work in small areas near the staging area to verify construction sequencing for the armor cap in certain portions of the river.
View from Route 131 Bridge of the Staging Area
Capping Equipment Used for 2018 Work