Additional Groundwater Investigation for 1,4-dioxane Commences

Total Groundwater Processed

Through mid-June, 2019, approximately 1.35 million gallons of groundwater have been processed through the Permanent Groundwater Treatment System (Final Treatment System), which has been operational since April 2, 2019.

Previously, approximately 17 million gallons of groundwater were processed through the Temporary Groundwater Treatment System (TGTS) to maintain hydraulic capture of the plume. The TGTS operated from May 23, 2017 until the Final Treatment System was operational.

Groundwater NTCRA

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Building Demolition
Non-Time Critical
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Environmental Remediation
Remedial Investigation /
Feasibility Study (RI/FS)

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Additional Groundwater Investigation for 1,4-dioxane Commences

USEPA (EPA) approved the Groundwater Investigation Work Plan on 27AUG15 for further delineation of the contaminant 1,4-dioxane. The investigation will include installation of additional monitoring wells, comprehensive groundwater quality monitoring to define the extent of the 1,4-dioxane plume and water level monitoring. EPA is considering accelerating this portion of the proposed remedy and performing it as a Non-Time-Critical Removal Action (NTCRA) rather than as part of the overall remedy. Crews mobilized to the site and began well installation today, 1SEP15.

Crews beginning installation of MW-35, adjacent to Main street.

Last updated on January 6, 2021

Nuclear Metals Superfund Site

Additional Groundwater Investigation for 1,4-dioxane Commences