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Matt Bachmann,
Hydrologist,
934 Broadway,
Suite 300
Tacoma, WA 98402

(mbachman@usgs.gov)
(253) 552-1672
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NAS Whidbey Transport Model

  
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The Issue: The carcinogenic compound 1,4-dioxane was recently (2003) found in groundwater in the vicinity of the former landfill at Area 6, Operable Unit 1, Naval Air Station (NAS) Whidbey Island, Island County, Washington. The current extent and potential for further migration of 1,4-dioxane in the vicinity of Area 6 are not well known. Also at area 6, the Navy is exploring options to remove residual chlorinated VOCs from the vadose-zone source area that appear to be sustaining groundwater contamination, and they require information about how accelerated vadose-zone remediation may relate to accelerated groundwater remediation.

How USGS will help: In close cooperation with the Navy, the US Environmental Protection Agency, and local stakeholders, the USGS will construct and apply a groundwater flow and transport model for Area 6 to better understand the historical and potential future migration of 1,4-dioxane and how accelerated vadose-zone remediation may relate to accelerated remediation of VOCs in groundwater.

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