Grand Island Nebraska Grapples with Superfund Plume

July 20, 2007 - Members of the public were most concerned with vapors from contaminated soil and groundwater leaking into their homes via basement flooding.

Curtis said the contaminants found in air or water in homes haven't been at high levels. He said this is probably because the chemicals are heavier than water and have sunk to the bottom of the water table, no less than 40 feet below the surface.

Curtis suggested that people worried about vapor intrusion can install barriers and fan systems in homes.

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