In 1989, after years of investigation and study, the U.S. EPA ("EPA") finally selected a remedy for the Middlefield-Ellis-Whisman (“MEW”) area in Mountain View, California, one of the largest Superfund sites in the country. Five years later, the EPA concluded that the remedy at MEW was not adequate to prevent the migration of contaminated vapors into buildings overlying the site, and required responsible parties to take additional remedial measures.
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