deposits of silt. Cleanup would inherently disturb the covered chemical stirring it up causing further ecological damage. The lower end of the estimated spill (19 million tons) would be two times the 1988 US production of ethylene dichloride that was 9,445,000 tons. 1.6 million tons were cleaned up. Any construction might disturb contaminated soil so would have to be constantly monitored. See also List of Louisiana Natural and Scenic Rivers References External links Rivers of Louisiana Drainage basins of the Gulf of Mexico Intracoastal Waterway Lake Charles, Louisiana Rivers of Vernon Parish, Louisiana Rivers of Allen Parish, Louisiana Rivers of Cameron Parish, Louisiana Rivers of Calcasieu Parish, Louisiana