Technical Evaluation of Iodine Remediation for 200-UP-1 - 16379
- Pacific Northwest National Laboratory (United States)
- Savannah River National Laboratory (United States)
From the 1940's through the 1990's, liquid wastes from materials used and produced at the Hanford Site were disposed to the ground through cribs, ditches, ponds, and trenches. The major sources that contributed to groundwater contamination within the 200-UP-1 Operable Unit (OU) were associated with plutonium-separation and uranium recovery operations at the S Plant and U Plant facilities, as well groundwater migration from 200-ZP-1 OU. Iodine-129 is present in the groundwater and vadose zone beneath the 200-UP-1 OU, and is one of the primary risk drivers for the site. Hydraulic containment is the currently selected remedy for I-129 in the groundwater. There is currently no remedy selected for controlling migration of I-129 from the vadose zone to the groundwater. A UP-1 Evaluation Plan for I-129 was developed to provide the scientific and technical understanding necessary for developing remediation approaches for I-contaminated groundwater as well as risk-based approaches for managing I-129 present in the vadose zone. A site conceptual model for understanding the biogeochemical drivers for iodine speciation and determine the processes that drive the fate and transport of I-129 through the vadose zone and into groundwater was included. These data will provide the information to decrease the uncertainty related to the inventory, distribution, and transport properties which will lead to appropriate treatment strategies for the I-129 plume(s). A wide range of technologies and approaches are being evaluated including consideration of removal, cost, and long-term impacts to the site. (authors)
- Research Organization:
- WM Symposia, Inc., PO Box 27646, 85285-7646 Tempe, AZ (United States)
- OSTI ID:
- 22838195
- Report Number(s):
- INIS-US-19-WM-16379; TRN: US19V1388083550
- Resource Relation:
- Conference: WM2016: 42. Annual Waste Management Symposium, Phoenix, AZ (United States), 6-10 Mar 2016; Other Information: Country of input: France; 19 refs.; available online at: http://archive.wmsym.org/2016/index.html
- Country of Publication:
- United States
- Language:
- English
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