Lake Charles, Louisiana
Axial Corporation, LLC operated a former PPG Industries, Inc. facility located approximately 2.5 miles west of Lake Charles, Louisiana, within the north-central portion of Calcasieu Parish in southwestern Louisiana. The plant is located on the west bank of the Coon Island Reach of the Calcasieu River Ship Channel. The facility has operated since 1947 and currently manufactures a variety of chemical products including chlorine, chlorinated hydrocarbons, and caustic soda.
SOW included Beneficial Reuse by hydraulic dredging of 693,000 CY of clean sediment for use as a cap/cover over impacted contaminated sediments; hydraulic dredging of 95,000 CY of contaminated sediments; and placement of an in-situ cover of a minimum of 6-in. across mudflats and open water to create 120 acres of tidal marsh. Extensive marsh and wetland restoration included using the clean dredged material to raise the existing mudline to an elevation suitable for wetland restoration. Wetland restoration included creating a homogenized substrate and the planting of wetland grasses. Sevenson planted over 54,000 native plants of Spartina alterniflora.