Soil Gas Survey Results Supporting Groundwater Correction Action Plan (GCAP) Development for the Moab Site

Technical Report · Tue Oct 15 04:00:00 EDT 2024

DOI:https://doi.org/10.2172/2467336· OSTI ID:2467336

Looney, Brian B. ^[1]; VerMeulen, Holly H. ^[1]; Coleman, Austin L. ^[1]; Pill, Kenneth ^[2]; Prichard, Thomas ^[2]; Ritchey, James D. ^[2]

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1. Savannah River National Laboratory (SRNL), Aiken, SC (United States)
2. North Wind Portage, Butte, MT (United States)

A soil gas survey was performed at the Moab Uranium Mill Tailings Remedial Action (UMTRA) Project Site during the week of November 6, 2023. Soil gas surveys are used to characterize residual subsurface sources of volatile contaminants, such as volatile organic compounds, as well as contaminants that generate a surrogate indicator gas or otherwise influence soil gas composition. The primary objective of the Moab soil gas survey was to confirm, identify, quantify, and refine secondary contaminant source area locations for uranium and ammonium/ammonia (NH₄⁺/NH₃) in the vadose zone and shallow groundwater. The overarching goal was to provide information to assist in developing the technical basis for the Groundwater Compliance Action Plan (GCAP). Specifically, the soil gas data will support the deployment of source control technologies; e.g., where supplementary capping, removal actions, or amendments might be beneficial.

• Research Organization: Savannah River National Laboratory (SRNL), Aiken, SC (United States)
• Sponsoring Organization: USDOE Office of Environmental Management (EM)
• DOE Contract Number: 89303321CEM000080
• OSTI ID: 2467336
• Report Number(s): SRNL--STI-2024-00227
• Country of Publication: United States
• Language: English

Related Subjects

12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
Moab
ammonia
ammonium
environmental
gas
radon
soil
uranium