Corrective Measure Study & Remedy Selection

Groundwater Focused Field Investigations
DOE Focused Field Investigations	Publication Date	File Size
DTSC Approval of the DOE Final Leachate Modeling Results for SSFL Area IV	January 2026	223 KB
DOE Responses to DTSC Review Comments on the Draft Leachate Modeling Technical Memorandum	October 2025	81 KB
DTSC Approval of the DOE Final HMSA Groundwater Data Gap Report	October 2025	215 KB
DOE Final Leachate Modeling Results for SSFL Area IV	September 2025	36.7 MB
DOE Responses to DTSC Comments on the Draft Hazardous Materials Storage Area Groundwater Data Gap Report	September 2025	88 KB
DTSC Approval for the DOE Final Geochemical Characterization Sampling and Analysis Plan	September 2025	317 KB
DOE Final Hazardous Materials Storage Area (HMSA) Groundwater Data Gap Report Santa Susana Field Laboratory, Area IV	August 2025	29.3 MB
DOE Response to DTSC Comments on the Draft Geochemical Characterization Sampling and Analysis Plan	August 2025	99 KB
DOE Final Geochemical Characterization Sampling and Analysis Plan	August 2025	10.7 MB
DTSC Comments on the DOE 1,4-Dioxane: Summary of Area IV-Wide Presence and Remedial Approaches	August 2025	336 KB
DOE Final Hazardous Materials Storage Area (HMSA) Groundwater Data Gap Report	August 2025	29.3 MB
DTSC Comments on the DOE Draft Geochemical Characterization Sampling and Analysis Plan	July 2025	327 KB
DTSC Approval of the DOE Final Leachate Modeling Approach and Results for the Building 4065 Metals Clarifier/U.S. Department of Energy Leach Fields 3 and the HMSA	July 2025	229 KB
DTSC Comments on the DOE Hazardous Materials Storage Area (HMSA) Groundwater Data Gap Report	July 2025	436 KB
DTSC Comments on the DOE Hazardous Materials Storage Area (HMSA) Groundwater Data Gap Report	July 2025	436 KB
DOE Draft Geochemical Characterization Sampling and Analysis Plan	June 2025	8.4 MB
DOE Leachate Modeling Report Results	May 2025	17.8 MB
DOE Final Leachate Modeling Approach and Results for the Building 4065 Metals Clarifier/U.S. Department of Energy Leach Fields 3 and the Hazardous Material Storage Area	May 2025	4.1 MB
DTSC Comments on the DOE Leachate Modeling Approach and Results for the Building 4065 Metals Clarifier, Leach Fields 3, and HMSA	April 2025	257 KB
DOE HMSA Groundwater Data Gap Report	March 2025	29.3 MB
DTSC Acceptance of the DOE Technical Memorandum - Former Sodium Disposal Facility Rock Core Investigation - 2020 and Response to Comments	February 2025	578 KB
Leachate Modeling Approach and Results for the Building 4065 Metals Clarifier/U.S. Department of Energy Leach Fields 3 and the Hazardous Material Storage Area,	February 2025	2.4 MB
DOE Response to DTSC Comments on the Leachate Modeling Approach	February 2025	481 KB
DTSC Comments on DOE Leachate Modeling Approach Results for the Building 4065 Metals Clarifier/U.S. Department of Energy Leach Fields 3 and Hazardous Material Storage Area	December 2024	591 KB
DOE Responses to DTSC Comments on the FSDF Rock Core Investigation for the HMSA	November 2024	2.6 MB
DOE 1,4-Dioxane: Summary of Area IV-wide Presence and Remedial Approaches	October 2024	8.9 MB
DOE Leachate Modeling Approach and Results for the Building 4065 Metals Clarifier/U.S. Department of Energy Leach Fields 3 and the Hazardous Material Storage Area	October 2024	1.2 MB
Former Sodium Disposal Facility Rock Core Investigation - 2020	November 2023	4.9 MB
DTSC Comments on the DOE Leachate Modeling Approach	August 2023	450 KB
DOE Draft Leachate Modeling Approach Technical Memorandum	May 2023	272 KB
DOE Area IV HMSA 2019 Aquifer Characterization Tech Memo	July 2020	27.7 MB
DOE Area IV 2019 Former Sodium Facility Groundwater Investigations	June 2020	1.7 MB
DOE Area IV 2019 Corrective Measures Study Investigations of HMSA	February 2020	1.1 MB
DOE Area IV Groundwater Data Gap Well Installation GW RI Work Plan Addendum	January 2020	4.6 MB
DOE Area IV HMSA 2018 New Well Installation	December 2018	2.4 MB
DOE Area IV FSDF Rock Core Investigation (Revision 1) 12_6_2018	December 2018	912 KB
DOE Area IV Former Sodium Disposal Facility Rock Core Investigation	October 2018	881 KB
DOE Area IV Hazardous Materials Storage Area Aquifer Test Results	October 2018	7.1 MB
DOE Area IV Passive Soil Gas Investigation April 2018	August 2018	3.3 MB