Contaminated Sediments
Sediments are unconsolidated particulate materials found at the bottom of natural and manmade surface water bodies. They may include clay, silt, sand, gravel, decaying organic matter, or shells. Discharge of contaminants to surface water can result in contamination of sediments and potentially adverse impacts to receptors including benthic and water-column invertebrates, fish, wildlife, plants, and human populations. Contaminant sources include contaminated wastewater, surface water runoff, stormwater discharge, or groundwater, as well as atmospheric deposition, and spills and releases.