EPA Superfund Site

LANGLEY AIR FORCE BASE/NASA LANGLEY RESEARCH CENTER

VA | EPA ID VA2800005033

About this site’s exposure pathways: As of October 2007 there is adequate information and documentation to revise the site wide Human Exposure Control Status to "Under Control" at the Langley Air Force Base/NASA Langley Research Center Superfund Site..

For Langley Air Force Base, EPA and the Base have resolved current and future groundwater (insufficient data) human health risks. There is no complete human exposure pathway between groundwater and human receptors such that exposures can be reasonably expected under current conditions. Surface water, soil and sediment were not the reason for the previously "insufficient data" status. Next steps are to complete a background study for groundwater and evaluate remedial alternatives for the potential risk associated with groundwater (In Virginia all groundwater is a potential drinking water source needing to meet MCLs) at the Base. Contaminants of concern (future use scenarios) are mainly inorganics across the Base with site specific organic plumes (which have been addressed with interim actions.

For NASA Langley Research Center there were no insufficient data issues. There is no complete human exposure pathway between groundwater, surface water, soil, sediment or air and human receptors such that exposures can be reasonably expected under current conditions. Next steps are to evaluate, propose and select remedial alternative for the remaining two sites on the Base. Contaminants of concern (future use scenarios) are both inorganic and organic which will be addressed