Science
3:45 pm
Thu October 18, 2012

Agreement Reached To Clean-Up Groundwater Contamination At St. Louis County Site

A company has agreed to clean up groundwater contamination in north St. Louis County after tests raised concerns at homes near the plant.

The Environmental Protection Agency on Thursday announced a cleanup agreement with PerkinElmer Inc., a Massachusetts-based firm that operates the Missouri Metals plant. The agreement will be final after a 30-day comment period.

An industrial solvent was spilled or dumped at the plant more than 25 years ago, polluting groundwater. Recent testing detected "levels of concern" in five homes.

PerkinElmer has installed vapor mitigation systems at the affected homes.

The agreement requires PerkinElmer to do more investigation and to install vapor mitigation systems at additional homes as needed. The company also must detail a plan to clean up groundwater.

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