WMA-C - Waste Management Area C Closure Process

The Waste Management Area Performance Assessment (WMA-C PA) is the modeling tool that Ecology (through the Appendix I process) will use to evaluate the risks from landfill closure (i.e., waste left in place at WMA-C). The WMA-C PA is already being developed with extensive input from the regulators and stakeholders. This input is reviewed on a regular basis in a workshop setting that includes representatives of tribal nations, local and regional stakeholder groups, State and Federal regulators, the Nuclear Regulatory Commission, and USDOE Headquarters. Additionally, briefings on the WMA-C PA development process are provided periodically to a larger audience of stakeholders.The Washington State Department of Ecology (Ecology) and the US Department of Energy (USDOE) will will soon be making decisions for closure of the first Hanford Site tank farm, designated as Waste Management Area-C. Various studies and plans have recently been published by USDOE to begin a dialogue on the WMA-C closure process.

Information Sheet (PDF)

Documents

• C-301 Catch Tank Waste Retrieval (PDF)
  An evaluation of waste removal technologies in the 241-C-301 is provided including estimates of costs and benefits for each.
  • Washington State Department of Ecology's review of C-301 Catch Tank Waste Retrieval Study

• Tank Removal Study (PDF)
  This study provides an evaluation of demolition and removal of the WMA-C tanks, ancillary equipment, and proximate soils.
  • Washington State Department of Ecology's review of the Tank Removal Study

• USDOE Order 435.1 Waste Determination Process Description  (PDF)
  This description will discuss the process that USDOE will use for reaching determinations of the WMA-C residuals after retrieval activities that are subject to DOE Order 435.1.

• Integration of RCRA and CERCLA at WMA-C (PDF)
  An evaluation of waste removal technologies in the 241-C-301 is provided including estimates of costs and benefits for each.
  • Washington State Department of Ecology's review of Integration of RCRA and CERCLA at WMA-C

• Pipeline Feasibility Evaluation  (PDF)
  This evaluation provides existing information about WMA-C pipelines, determines estimates of pipeline inventories, and provides a scoping analysis of risk associated with the inventories. Pipeline characterization and remediation technologies are also evaluated.
  • Washington State Department of Ecology's review of the Pipeline Feasibility Evaluation

Leak Inventory Assessment Reports

• C Farm (RPP-ENV-33418) (PDF)
• A/AX Farms (RPP-ENV-37956) (PDF)
• SX Farm (RPP-ENV-39658) (PDF)
• TY Farm (RPP-RPT-43704) (PDF)
• BY Farm (RPP-RPT-43704) (PDF)
• BX Farm (RPP-RPT-47562) (PDF)

Tank Integrity Assessment Reports

• Tank Waste Summary - (PDF) Updated November 30, 2010
• C-105 (RPP-ASMT-46452) (PDF)
• C-105 (WRPS-1001053) (PDF)
• C-110 (RPP-ASMT-38219) (PDF)
• C-111 (RPP-ASMT-39155) (PDF)
• A-103 (RPP-ASMT-42278) (PDF)
• SX-110 (RPP-ASMT-47140) (PDF)
• Fiscal Year 2010 Visual Inspection Report for Single-Shell Tanks (PDF)
• Visual Inspection Plan for Single-Shell Tanks and Double-Shell Tanks, RPP-PLAN-46847, Rev. 0 (PDF)
• Fiscal Year 2010 Visual Inspection Report Single-Shell Tanks, RPP-RPT-48194 Rev. 0  (PDF)
• Data Quality Objectives report, RPP-49300 (PDF)