Raytheon seeks Corps permit to place fill material in Wayland wetland

Project Updates - May 2, 2003

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Raytheon Company is seeking a US Army Corps of Engineers permit to place fill material within about 1.5 acres of wetland located at 430 Boston Post Road in Wayland, Massachusetts.

The impacted area is located in the floodplain of the Sudbury River adjacent to a former Raytheon facility, an approximate 83-acre property. The proposed work involves the remediation of about 1.5 acres of wetland soils and sediment impacted by polychlorinated biphenyls (PCBs), polycyclic aromatic hydrocarbons (PAHs), and metals.

The remediation will require excavation to a depth of about 18 inches and off-site disposal of impacted soil and sediment, resoiling and re-vegetating to repair the temporary damage and restoration of the wetland. The remediation area will be restored toa functional deep emergent marsh system as part of Sudbury River floodplain. Restoration will include placement of clean fill material to restore the site to approximate original contours, revegetating by seeding and planting, nuisance species control,construction monitoring, and ecological monitoring,. Temporary impacts to the wetland areas will be minimized through use of engineering controls and separation of waste and materials staging areas.

The project will impact habitat for 15 species of fish that may occur in, or near, the project area. Temporary impacts to this habitat may adversely affect these species; however, a preliminary determination indicates that the site-specific adverse effect will not be substantial.

The application for the federal permit was filed with the Corps of Engineers in compliance with Section 404 of the Clean Water Act, which regulates the discharge or fill of material in United States waters, including wetlands.

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