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Risk to Human Health

Many of the sediment and soil samples collected from the affected area of the river have shown some high levels of contamination above the United States Environmental Protection Agency - EPA Region 9 Regional Screening Levels (RSLs) for residential soils. Region 9 RSLs are used by DHEC because they are the most conservative levels available. This means that if the TLM-impacted sediments existed on dry land as surface soil many of the components of the contamination would exceed the levels considered safe for residential areas.