October 2025 Semiannual Composite Salt Waste Processing Facility Decontaminated Salt Solution Toxicity Characteristic Leaching Procedure Results

Hsieh, Madison [Savannah River National Laboratory (SRNL), Aiken, SC (United States)]; Hill, Katie [Savannah River National Laboratory (SRNL), Aiken, SC (United States)] (ORCID:0009000841983695)

doi:10.2172/3685160

DOE OSTI · 3685160

October 2025 Semiannual Composite Salt Waste Processing Facility Decontaminated Salt Solution Toxicity Characteristic Leaching Procedure Results

Hsieh, Madison [Savannah River National Laboratory (SRNL), Aiken, SC (United States)]·Hill, Katie [Savannah River National Laboratory (SRNL), Aiken, SC (United States)] (ORCID:0009000841983695)

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Abstract

The aqueous waste from the Salt Waste Processing Facility is sampled semiannually for transfers to the Saltstone Disposal Facility. Salt solution is treated at the Saltstone Production Facility and disposed of in the Saltstone Disposal Facility. Per request of customer, X-TTR-Z-00027, Revision 0, one Saltstone Processing Facility Decontaminated Salt Solution and Z area premix material for the October 2025 semiannual Toxicity Characteristic Leaching Procedure sample. The sample contained 60:40 (by weight) of slag and fly ash (referred to as the “Cement-Free grout sample”). Results from the technical report support Task 2: ‘Grout Leaching Analyses’ of the Task Technical Request prepared by Savannah River Mission Completion. At 51 days cured, the Saltstone sample was collected and shipped to a certified laboratory for analysis using the Toxicity Characteristic Leaching Procedure. The October 2025 Semiannual Cement-Free grout sample met 61 79.268.48 requirements for a non-hazardous waste form with respect to the Resource Conservation and Recovery Act metals and Underlying Hazardous Constituents and met the Saltstone Production Facility Waste Acceptance Criteria that was in effect at the time of the sample collection at the Salt Waste Processing Facility.

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Hsieh, Madison [Savannah River National Laboratory (SRNL), Aiken, SC (United States)], Hill, Katie [Savannah River National Laboratory (SRNL), Aiken, SC (United States)] (ORCID:0009000841983695). 2026-07-01. October 2025 Semiannual Composite Salt Waste Processing Facility Decontaminated Salt Solution Toxicity Characteristic Leaching Procedure Results. https://doi.org/10.2172/3685160

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