CSX seeks permission to cap pollution on Mississippi site

CSX Transportation is seeking permission to place caps over contaminants from the old Creosote Works that settled in the West Pascagoula River and Bayou Pierre in Gautier, according to company officials and the Mississippi Department of Marine Resources. The proposed cap will include layers of reactive core mat, silty sand isolation area, non-woven geotextile and poorly graded stone. The cap would be overlaid with a veneer of fine sand and indigenous wetland vegetation within the intertidal zone to mitigate the seven-tenths acre of tidal fringe wetlands that would be affected.