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Consent Agreement and Site Assessment 

On February 26, 2019, DHEC executed Consent Agreement #19-02-HW with Westinghouse to formally address historical contamination and implement a protocol for communicating and responding to any contamination discovered in the future. The consent agreement requires Westinghouse to conduct a comprehensive site-wide environmental assessment (also known as a Remedial Investigation) to fully determine the extent of contamination at the site. Once the assessment has been completed, methods for cleanup will be evaluated and implemented.   

DHEC’s site assessment documents and reports will be provided on this webpage as they are made available.

DateTitleDescription
April 17, 2024DHEC Response to Groundwater Monitoring Report 
April 2024

2024 Groundwater Monitoring Report

 
March 29, 2024DHEC Response to Middle Ditch Assessment Work Plan 
March 25, 2024Additional Middle Ditch Assessment Work Plan 
March 13, 2024February 2024 Consent Agreement Progress Report Review Letter 
March 11, 2024February 2024 Consent Agreement Progress ReportProgress report required by DHEC Consent Agreement and submitted by Westinghouse.
February 15, 2024Approval of January 2024 Consent Agreement Progress ReportDHEC's written approval of the January 2024 CA Progress Report.
February 8, 2024January 2024 Consent Agreement Progress ReportProgress report required by DHEC Consent Agreement and submitted by Westinghouse.
January 18, 2024Approval of December 2023 Consent Agreement Progress ReportDHEC's written approval of the December 2023 CA Progress Report.
January 11, 2024December 2023 Consent Agreement Progress ReportProgress report required by DHEC Consent Agreement and submitted by Westinghouse.
January 8, 2024Approval of Middle Ditch Soil/Sediment Sampling Report 
December 11, 2023Approval of November 2023 Consent Agreement Progress ReportDHEC's written approval of the November 2023 CA Progress Report.
December 6, 2023November 2023 Consent Agreement Progress ReportProgress report required by DHEC Consent Agreement and submitted by Westinghouse.
November 15, 2023Middle Ditch Soil/Sediment Sampling Report 
November 15, 2023Approval of October 2023 Consent Agreement Progress ReportDHEC's written approval of the October 2023 CA Progress Report.
November 13, 2023October 2023 Consent Agreement Progress ReportProgress report required by DHEC Consent Agreement and submitted by Westinghouse.
October 18, 2023Approval of September 2023 Consent Agreement Progress ReportDHEC's written approval of the September 2023 CA Progress Report.
October 13, 2023September 2023 Consent Agreement Progress ReportProgress report required by DHEC Consent Agreement and submitted by Westinghouse.
September 19, 2023DHEC Response to Groundwater Monitoring Report 
September 11, 2023Approval of August 2023 Consent Agreement Progress ReportDHEC's written approval of the August 2023 CA Progress Report.
September 8, 2023August 2023 Consent Agreement Progress ReportProgress report required by DHEC Consent Agreement and submitted by Westinghouse.
September 1, 2023DHEC Approval of Feasibility Study Work Plan 
September 1, 20232022-2023 Annual Groundwater Monitoring Report 
August 23, 2023Approval of July 2023 Consent Agreement Progress ReportDHEC's written approval of the July 2023 CA Progress Report.
August 9, 2023July 2023 Consent Agreement Progress ReportProgress report required by DHEC Consent Agreement and submitted by Westinghouse.
July 21, 2023Response to Middle Ditch Soil/Sediment Plan 
July 20, 2023Approval of June 2023 Consent Agreement Progress ReportDHEC's written approval of the June 2023 CA Progress Report.
July 18, 2023Middle Ditch Soil/Sediment Work Plan 
July 14, 2023Feasibility Study Work Plan 
July 13, 2023June 2023 Consent Agreement Progress ReportProgress report required by DHEC Consent Agreement and submitted by Westinghouse.
June 5, 2023Approval of May 2023 Consent Agreement Progress ReportDHEC's written approval of the May 2023 CA Progress Report.
June 2, 2023May 2023 Consent Agreement Progress ReportProgress report required by DHEC Consent Agreement and submitted by Westinghouse.
May 11, 2023Approval of April 2023 Consent Agreement Progress ReportDHEC's written approval of the April 2023 CA Progress Report.
May 5, 2023April 2023 Consent Agreement Progress ReportProgress report required by DHEC Consent Agreement and submitted by Westinghouse.
April 17, 2023Approval of March 2023 Consent Agreement Progress ReportDHEC's written approval of the March 2023 CA Progress Report.
April 4, 2023March 2023 Consent Agreement Progress ReportProgress report required by DHEC Consent Agreement and submitted by Westinghouse.
March 23, 2023Approval of Final Remedial Investigation Report 
March 16, 2023Approval of February 2023 Consent Agreement Progress ReportDHEC's written approval of the February 2023 CA Progress Report.
March 7, 2023February 2023 Consent Agreement Progress ReportProgress report required by DHEC Consent Agreement and submitted by Westinghouse.
March 1, 2023

Final Remedial Investigation Report

 
February 28, 2023Approval of January 2023 Consent Agreement Progress ReportDHEC's written approval of the January 2023 CA Progress Report.
February 10, 2023January 2023 Consent Agreement Progress ReportProgress report required by DHEC Consent Agreement and submitted by Westinghouse.
January 11, 2023Approval of December 2022 Consent Agreement Progress ReportDHEC's written approval of the December 2022 CA Progress Report.
January 10, 2023December 2022 Consent Agreement Progress ReportProgress report required by DHEC Consent Agreement and submitted by Westinghouse.
December 7, 2022Approval of November 2022 Consent Agreement Progress ReportDHEC's written approval of the November 2022 CA Progress Report.
December 1, 2022November 2022 Consent Agreement Progress ReportProgress report required by DHEC Consent Agreement and submitted by Westinghouse.
November 18, 2022Approval of October 2022 Consent Agreement Progress ReportDHEC's written approval of the October 2022 CA Progress Report.
November 11, 2022October 2022 Consent Agreement Progress ReportProgress report required by DHEC Consent Agreement and submitted by Westinghouse.
November 2, 2022

2022 Groundwater Monitoring Report 

 
October 10, 2022Approval of September 2022 Consent Agreement Progress ReportDHEC's written approval of the September 2022 CA Progress Report.
October 5, 2022September 2022 Consent Agreement Progress ReportProgress report required by DHEC Consent Agreement and submitted by Westinghouse.
September 26, 2022Approval of August 2022 Consent Agreement Progress ReportDHEC's written approval of the August 2022 CA Progress Report.
September 14, 2022August 2022 Consent Agreement Progress ReportProgress report required by DHEC Consent Agreement and submitted by Westinghouse.
August 8, 2022Approval of July 2022 Consent Agreement Progress ReportDHEC's written approval of the July 2022 CA Progress Report.
August 4, 2022July 2022 Consent Agreement Progress ReportProgress report required by DHEC Consent Agreement and submitted by Westinghouse.
July 18, 2022Approval of June 2022 Consent Agreement Progress ReportDHEC's written approval of the June 2022 CA Progress Report.
July 7, 2022June 2022 Consent Agreement Progress ReportProgress report required by DHEC Consent Agreement and submitted by Westinghouse.
June 6, 2022Approval of May 2022 Consent Agreement Progress ReportDHEC's written approval of the May 2022 CA Progress Report.
June 2, 2022May 2022 Consent Agreement Progress ReportProgress report required by DHEC Consent Agreement and submitted by Westinghouse.
May 23, 2022Approval of April 2022 Consent Agreement Progress ReportDHEC's written approval of the April 2022 CA Progress Report.
May 9, 2022April 2022 Consent Agreement Progress ReportProgress report required by DHEC Consent Agreement and submitted by Westinghouse.
April 8, 2022Approval of March 2022 Consent Agreement Progress ReportDHEC's written approval of the March 2022 CA Progress Report.
April 5, 2022March 2022 Consent Agreement Progress ReportProgress report required by DHEC Consent Agreement and submitted by Westinghouse.
March 9, 2022Approval of February 2022 Consent Agreement Progress ReportDHEC's written approval of the February 2022 CA Progress Report.
March 8, 2022February 2022 Consent Agreement Progress ReportProgress report required by DHEC Consent Agreement and submitted by Westinghouse.
February 15, 2022Approval of January 2022 Consent Agreement Progress ReportDHEC's written approval of the January 2022 CA Progress Report.
February 10, 2022January 2022 Consent Agreement Progress ReportProgress report required by DHEC Consent Agreement and submitted by Westinghouse.
January 10, 2022Approval of December 2021 Consent Agreement Progress ReportDHEC's written approval of the December 2021 CA Progress Report.
January 6, 2022December 2021 Consent Agreement Progress ReportProgress report required by DHEC Consent Agreement and submitted by Westinghouse.
December 14, 2021Approval of November 2021 Consent Agreement Progress ReportDHEC's written approval of the November 2021 CA Progress Report.
December 8, 2021November 2021 Consent Agreement Progress ReportProgress report required by DHEC Consent Agreement and submitted by Westinghouse.
November 29, 2021Sanitary Lagoon Sludge Characterization Report 
November 29, 2021Approval of October 2021 Consent Agreement Progress ReportDHEC's written approval of the October 2021 CA Progress Report.
November 15, 2021October 2021 Consent Agreement Progress ReportProgress report required by DHEC Consent Agreement and submitted by Westinghouse.
October 28, 2021DHEC's Response to September Virtual Meeting Summary 
October 19, 2021Approval of September 2021 Consent Agreement Progress ReportDHEC's written approval of the September 2021 CA Progress Report.
October 18, 2021September Virtual Meeting Summary Submitted by Westinghouse 
October 12, 2021September 2021 Consent Agreement Progress ReportProgress report required by DHEC Consent Agreement and submitted by Westinghouse.
September 21, 2021Flyer - Public Comment Period for Draft Environmental Impact Statement Now OpenPublic Comment Period for the Draft Environmental Impact Statement License Renewal of the Westinghouse Columbia Fuel Fabrication Facility is open now until November 19, 2021.
September 15, 2021Approval of August 2021 Consent Agreement Progress ReportDHEC's written approval of the August 2021 CA Progress Report.
September 2, 2021August 2021 Consent Agreement Progress ReportProgress report required by DHEC Consent Agreement and submitted by Westinghouse.
September 1, 20212020-2021 Groundwater Monitoring Report Part 2CFFF Annual GWS Monitoring report part of the requirements in the NPDES permit
September 1, 20212020-2021 Groundwater Monitoring Report Part 1CFFF Annual GWS Monitoring report part of the requirements in the NPDES permit
August 30, 2021Approval of July 2021 Consent Agreement Progress ReportDHEC's written approval of the July 2021 CA Progress Report.
August 11, 2021July 2021 Consent Agreement Progress ReportProgress report required by DHEC Consent Agreement and submitted by Westinghouse.
July 2021NRC Environmental Impact Statement for Westinghouse 
July 22, 2021Approval of June 2021 Consent Agreement Progress ReportDHEC's written approval of the June 2021 CA Progress Report.
July 13, 2021June 2021 Consent Agreement Progress ReportProgress report required by DHEC Consent Agreement and submitted by Westinghouse.
June 21, 2021Approval of Proposed Action for Additional Assessment Part of the Phase II Remedial Investigation 
June 18, 2021Proposed Action for Additional Assessment Part of the Phase II Remedial Investigation  
June 16, 2021Approval of May 2021 Consent Agreement Progress ReportDHEC's written approval of the May 2021 CA Progress Report.
June 15, 2021May 2021 Consent Agreement Progress ReportProgress report required by DHEC Consent Agreement and submitted by Westinghouse.
May 28, 2021Approval Letter for Sanitary Lagoon Work PlanDHEC's written approval of the Sanitary Lagoon Work Plan.
May 17, 2021Approval of April 2021 Consent Agreement Progress ReportDHEC's written approval of the April 2021 CA Progress Report.
May 12, 2021April 2021 Consent Agreement Progress ReportProgress report required by DHEC Consent Agreement and submitted by Westinghouse.
May 5, 2021Approval of Additional Assessment for Phase II Work Plan 
May 4, 2021Additional Assessment for Phase II Work Plan 
April 15, 2021Approval of March 2021 Consent Agreement Progress ReportDHEC's written approval of the March 2021 CA Progress Report.
April 7, 2021March 2021 Consent Agreement Progress ReportProgress report required by DHEC Consent Agreement and submitted by Westinghouse.
March 15, 2021Approval of February 2021 Consent Agreement Progress ReportDHEC's written approval of the February 2021 CA Progress Report.
March 11, 2021February 2021 Consent Agreement Progress ReportProgress report required by DHEC Consent Agreement and submitted by Westinghouse.
February 25, 2021Approval of January 2021 Consent Agreement Progress ReportDHEC's written approval of the January 2021 CA Progress Report.
February 22, 2021Response to Remedial Investigation Work Plan Phase II AddendumDHEC's response to Sediment Sampling Plan to Bound the Extent of Uranium Around SED-44.
February 15, 2021January 2021 Consent Agreement Progress ReportProgress report required by DHEC Consent Agreement and submitted by Westinghouse.
February 12, 2021Remedial Investigation Work Plan Phase II AddendumSediment Sampling Plan to Bound the Extent of Uranium Around SED-44.
January 28, 2021Sanitary Lagoon Sludge Characterization Work PlanWork Plan to characterize the sludge in the Sanitary Lagoon as per Section 3.6 of the ongoing Phase II Remedial Investigation (RI) Work Plan.
January 25, 2021Approval of Additional Well Monitoring RequestDHEC's written approval of the request to install temporary and permanent wells to support the RI Phase II Work Plan.
January 21, 2021Additional Well Monitoring RequestRequest to install temporary and permanent wells to support the RI Phase II Work Plan.
January 11, 2021Approval of December 2020 Consent Agreement Progress ReportDHEC's written approval of the December 2020 CA Progress Report.
January 8, 2021December Consent Agreement Progress ReportProgress report required by DHEC Consent Agreement and submitted by Westinghouse.
December 14, 2020Approval of November 2020 Consent Agreement Progress ReportDHEC's written approval of the November 2020 CA Progress Report.
December 9, 2020November Consent Agreement Progress ReportProgress report required by DHEC Consent Agreement and submitted by Westinghouse.
November 12, 2020Approval of October 2020 Consent Agreement Progress ReportDHEC's written approval of the October 2020 CA Progress Report.
November 5, 2020Approval of Phase II Remedial Investigation Work Plan Addendum DHEC's written approval of the Phase II Remedial Investigation Work Plan Addendum. 
November 5, 2020October 2020 Consent Agreement Progress ReportProgress report required by DHEC Consent Agreement and submitted by Westinghouse.
October 29, 2020Phase II Remedial Investigation Work Plan Addendum  
October 14, 2020Response to Phase II Remedial Investigation Work PlanDHEC's written response to the Phase II Remedial Investigation Work Plan
October 12, 2020Approval of September 2020 Consent Agreement Progress ReportDHEC's written approval of the September 2020 CA Progress Report
October 1, 2020September 2020 Consent Agreement Progress ReportProgress report required by DHEC Consent Agreement and submitted by Westinghouse.
September 28, 20202019-2020 Groundwater Monitoring ReportCFFF Annual GWS Monitoring report part of the requirements in the NPDES permit
September 24, 2020HF Spiking Station #1 Soil Sampling Assessment Report ApprovalDHEC's written approval of the HF Spiking Station #1 Soil Sampling Assessment Report
September 15, 2020Phase II Remedial Investigation Work Plan 
August 25, 2020Response to TC-99 Source Investigation ReportDHEC's written response to the TC-99 Source Investigation Report submitted by Westinghouse.
August 21, 2020Approval of July 2020 Consent Agreement Progress ReportDHEC's written approval of the July 2020 CA Progress Report
August 12, 2020July 2020 Consent Agreement Progress ReportProgress report required by DHEC Consent Agreement and submitted by Westinghouse.
July 30, 2020HF Spiking Station #1 Soil Sampling Assessment Report 
July 30, 2020TC-99 Source Investigation ReportTechnetium-99 Source Investigation Report, which summarizes the sampling conducted as described in the Technetium Source Investigation Work Plan.
August 5, 2020NRC Federal Register Notice of IntentNRC is requesting public input on the scope of what the planned Environmental Impact Statement (EIS) for the Westinghouse Nuclear Fuel Fabrication Plant will contain. Comments are due to NRC by 8/30/2020.
July 30, 2020Response to  Final Interim Remedial Investigation Data Summary ResponseDHEC's written response to the Final Interim Remedial Investigation Data Summary Report submitted by Westinghouse.
July 30, 2020Final Interim Remedial Investigation Data Summary ReportData presented in this report includes the results of assessment activities conducted from June 2019 through January 2020.
July 13, 2020Approval of June 2020 Consent Agreement Progress ReportDHEC's written approval of the June 2020 CA Progress Report
July 8, 2020June 2020 Consent Agreement Progress ReportProgress report required by DHEC Consent Agreement and submitted by Westinghouse. 
June 22, 2020Approval of May 2020 Consent Agreement Progress ReportDHEC's written approval of the May 2020 CA Progress Report
June 15, 2020May 2020 Consent Agreement Progress ReportProgress report required by DHEC Consent Agreement and submitted by Westinghouse. 
May 21, 2020Approval of April 2020 Consent Agreement Progress ReportDHEC's written approval of the April 2020 CA Progress Report
May 12, 2020April 2020 Consent Agreement Progress ReportProgress report required by DHEC Consent Agreement and submitted by Westinghouse. 
May 4, 2020Response to Final Interim Remedial Investigation DataDHEC's written response to the Final Interim Remedial Investigation Data submitted by Westinghouse.
April 27, 2020Comments on Draft NRC EA of WestinghouseDHEC's written comments on the Draft Environmental Assessment (EA) for the Westinghouse Columbia Fuel Fabrication Facility pursuant to National Environmental Policy Act (NEPA).
April 16, 2020Approval of March 2020 Consent Agreement Progress ReportDHEC's written approval of the March 2020 CA Progress Report
April 8, 2020March 2020 Consent Agreement Progress ReportProgress report required by DHEC Consent Agreement and submitted by Westinghouse. 
March 30, 2020Approval of Soil Sampling Work PlanDHEC's written approval of the Soil Sampling Work Plan.
March 20, 2020Soil Sampling Work PlanSoil sampling performed by Westinghouse in the assessment area of HFSS#1.
March 19, 2020Approval of February 2020 Consent Agreement Progress ReportDHEC's written approval of the February 2020 CA Progress Report
March 6, 2020February 2020 Consent Agreement Progress ReportProgress report required by DHEC Consent Agreement and submitted by Westinghouse. 
February 2020Final Interim Remedial Investigation Data Summary Report

Supporting documents:

February 20, 2020Approval of January 2020 Consent Agreement Progress ReportDHEC's written approval of the January 2020 CA Progress Report
February 13, 2020Approval of Technetium Source Investigation Work PlanDHEC's written approval of the Technetium Source Investigation Work Plan
February 5, 2020January 2020 Consent Agreement Progress ReportProgress report required by DHEC Consent Agreement and submitted by Westinghouse. 
January 30, 2020Technetium Source Investigation Work PlanTechnetium (Tc-99) Source Investigation Work Plan prepared by Westinghouse as part of the Remedial Investigation under Consent Agreement CA-19-02-HW
January 24, 2020Approval of December 2019 Consent Agreement Progress ReportDHEC's written approval of the December 2019 CA Progress Report
January 14, 2020Approval of Westinghouse Updated Communication ProtocolDHEC's written review and approval of the Westinghouse Updated Communication Protocol.
January 13, 2020NRC Response to Comments on the Draft Environmental AssessmentNRC's response to DHEC's comments on the Draft Environmental Assessment for Westinghouse. 
January 6, 2020December 2019 Consent Agreement Progress ReportProgress report required by DHEC Consent Agreement and submitted by Westinghouse. 
December 18, 2019Westinghouse Updated Communication ProtocolWestinghouse Updated Communication Protocol.
December 3, 2019DHEC Comments on NRC's Draft Environmental AssessmentDHEC's comments on the Draft Environmental Assessment (EA) for the Westinghouse Columbia Fuel Fabrication Facility pursuant for National Environmental Policy Act (NEPA).
November 26, 2019November 2019 Consent Agreement Progress ReportProgress report required by DHEC Consent Agreement and submitted by Westinghouse. 
November 5, 2019Approval of Southern Storage Area Operable Unit Intermodal Container Work PlanDHEC's written approval of the Southern Storage Area Operable Unit Intermodal Container Work Plan
November 4, 2019Southern Storage Area Operable Unit Intermodal Container Work PlanWork plan to complete the risk-based investigation of intermodal storage within the Southern Storage Area Operable Unit. 
November 4, 2019October 2019 Consent Agreement Progress ReportProgress report required by DHEC Consent Agreement and submitted by Westinghouse. 
November 1, 2019Approval of Remedial Investigation (RI) Work Plan Sediment Transect Sampling PlanDHEC's written approval of the RI Work Plan Sediment Transect Sampling Plan
October 29, 2019Remedial Investigation (RI) Work Plan Sediment Transect Sampling PlanDocument proposes locations, methods, and subsequent analysis of the sediment samples.
October 16, 2019Approval of September 2019 Consent Agreement Progress ReportDHEC's written approval of the September 2019 CA Progress Report
October 3, 2019Approval of Remedial Investigation (RI) Work Plan Additional Flood Plain InvestigationPart of the Remedial Investigation (RI) with the Consent Agreement
October 2, 2019September 2019 Consent Agreement Progress ReportProgress report required by DHEC Consent Agreement and submitted by Westinghouse. 
October 2, 2019Approval of East Lagoon Sludge Characterization Work PlanApproval of East Lagoon - Part of BOW NPDES
September 30, 2019CFFF 2018-2019 Annual Groundwater Monitoring Report *CFFF Annual GWS Monitoring report part of the requirements in the NPDES permit
September 26, 2019East Lagoon Sludge Characterization Remedial Investigation (RI) Work PlanRevised East Lagoon Remedial Investigation (RI) Work Plan
September 12, 2019Additional Flood Plain Assessment Results and Permanent Well Installation RecommendationsInitial geologic logs used to recommend what the permanent groundwater monitoring well construction details should be.
September 4, 2019Approval of Southern Storage Area Assessment ReportApproval of Southern Storage - An operable unit part of the Remedial Investigation (RI)
August 29, 2019August 2019 Consent Agreement Progress ReportProgress report required by DHEC Consent Agreement and submitted by Westinghouse. 
August 15, 2019July 2019 Consent Agreement Progress ReportProgress report required by DHEC Consent Agreement and submitted by Westinghouse. 
August 9, 2019Remedial Investigation (RI) Work Plan Addendum 1 Assessment Report on the Southern Storage Area Operable UnitInitial data from the sea-land container investigation. 
August 7, 2019Approval of Additional Floodplain Assessment PlanDHEC's written approval of the RI Work Plan Additional Floodplain Assessments.
August 2, 2019Remedial Investigation (RI) Work Plan Additional Floodplain AssessmentsProposal submitted by Westinghouse to conduct additional assessments to support the RI Work Plan with additional floodplain assessment. 
July 10, 2019Approval of June 2019 Consent Agreement Progress ReportDHEC's written approval of the June 2019 Consent Agreement Progress Report.
June 28, 2019June 2019 Consent Agreement Progress ReportProgress report required by DHEC Consent Agreement and submitted by Westinghouse. 
June 19, 2019 Approval of Addendum 1 to Remedial Investigation (RI) Work Plan DHEC’s written approval of the RI Work Plan addendum. 
June 18, 2019 Addendum 1 to Remedial Investigation (RI) Work Plan RI addendum submitted by Westinghouse to include the southern storage area investigation. 
June 19, 2019 Remedial Investigation (RI) Work Plan Approval DHEC’s written approval of the Westinghouse RI Work Plan. 
June 18, 2019 Remedial Investigation Work Plan Work plan required by DHEC Consent Agreement and submitted by Westinghouse for comprehensive site-wide environmental assessment to determine extent of historical contamination. 
February 26, 2019 DHEC Consent Agreement 19-02-HW Requires Westinghouse to formally address historical contamination and implement a protocol for communicating and responding to any contamination discovered in the future.   

*Lab & field data was too large to include in the report, but can be available upon request.

DHEC Next Steps 

DHEC is overseeing the investigation as required by the Consent Agreement and expects a final report to be completed by the end of the year. 

DHEC held a community meeting on July 25, 2019, at the Lower Richland High School Auditorium, to discuss the Westinghouse site. Additional information about the meeting can be found here.

Future updates and information will be provided on this webpage as they become available.  You can also sign-up to be on our mailing list to receive notification of any future meetings or public hearings. 

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