CASPER, Wyo. (AP) — The Environmental Protection Agency has partially removed a federal Superfund site in Wyoming off its national priorities list after soil and groundwater cleanup actions were completed.
Agency officials say the partial deletion of the Mystery Bridge/U.S. Highway 20 Superfund site in Evansville was proposed in June, and it was taken off the list in late August.
The site that overlaps with a neighborhood between Highway 20 and the North Platte River was designated as a Superfund site about 30 years ago after extensive soil and groundwater contamination was discovered.
Officials say years of industrial operations at a facility owned by Kinder Morgan caused the contamination.
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Officials say the agency isn’t abandoning the site, but will continue to monitor it every five years. An underground toxin plume remains on the list.