Lakesediments show decades of coal ash contamination EnvSciTech
Coal ash is the residual material from burning coal to generate electricity, and is known to contain hazardous metals including lead, chromium, cadmium, mercury, arsenic, selenium and molybdenum, many of which have been tied toThe contaminants are not locked into the lake sediments, Vengosh said. A chemical analysis of the pore water within the
The five lakes in the study were created for nearby coal plants: Hyco Lake and Mayo Lake, North of Durham in Person County; Belews Lake, northwest of Greensboro in Rockingham, Forsyth and Stokes Counties; Mountain Island Lake, northwest of Charlotte in Mecklenburg County; and Lake Sutton, northwest of Wilmington in Brunswick County.
"At several of the sites, it appears that coal ash was initially just dumped into the nearby lake," Cowan said."Over time, when the Clean Air Act was enforced and scrubbers were added to the coal plant smokestacks to catch fine particulates, we see changes in the coal ash with higher proportions of small particles."
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