Reid Gardner Power Station Overview This webpage provides an overview of ongoing site characterization and corrective actions at the former Reid Gardner Station (RGS), a former coal-fired electric generating facility in Southern Nevada. The facility stopped producing power in 2017, and all power-generating structures were fully decomissioned and demolished by 2020.
For more historical background and details about current environmental activities, please read the fact sheet. [DOWNLOAD FACT SHEET ]
Administrative Order on Consent On February 22, 2008, NV Energy and NDEP entered into an Administrative Order on Consent (AOC) for the site. Under NDEP's oversight, the AOC requires NV Energy to:
Continue characterizing environmental contaminants, Identify appropriate soil and groundwater cleanup alternatives Implement approved remedial actions Operate and maintain long-term cleanup systems approved by NDEP Contaminants of concern identified at the site include, but are not limited to:
Total dissolved solids Sulfate Chloride Metals Volatile Organic Compounds Petroleum Hydrocarbons Site Investigation and Corrective Actions NV Energy has implemented a comprehensive environmental program to investigate and remediate contaminants across 35 identifed source areas. Key components of the work include:
Establishing background threshold values to differentiate naturally occurring minerals from site-related chmeicals Conducting extensive groundwater monitoring Developing a multi-phase site-wide Conceptual Site Model (CSM, currently in NDEP reivew). Significant corrective actions completed to date include:
Recovery of approximately 250,000 gallons of petroleum product Excavation of over 2.1 million cubic yards of pond solids Excavation of approximately 633,000 cubic yards of ash and soil fill To date, four sourced areas have received "Investigation Closed" determinations, and ten source areas have received "No Fruther Action".
Next Steps Targeted Site Investigations are planned to address data gaps in the CSM. New information will refine the understanding of site conditions and help guide future cleanup activities.
After the completion of a human and ecological risk assessment, additional remedial alternatives will be evaluated as needed.
Surface and groundwater monitoring will continue under the current NDEP-approved Interim Monitoring Plan. Monitoring data will be used to evaluate the effectiveness of the previous cleanup actions and track and any changes in the groundwater plume stability.
Reid Gardner Generating Station AOC Meeting Minutes 2025:Select Q1 2025 Final AOC Meeting Minutes Q2 2025 Final AOC Meeting Minutes
2024:Select 03-14-24 Final AOC Meeting Minutes Q2 2024 Final AOC Meeting Minutes Q3 2024 Final AOC Meeting Minutes Q4 2024 Final AOC Meeting Minutes
2023:Select 12-07-23 Final AOC Meeting Minutes 09-28-23 Final AOC Meeting Minutes 06-29-23 Final AOC Meeting Minutes 03-23-23 Final AOC Meeting Minutes
2022:Select 03-23-22 Final AOC Meeting Minutes
2021:Select 12-15-21 Final AOC Meeting Minutes 10-07-21 Final AOC Meeting Minutes 06-23-21 Final AOC Meeting Minutes 03-17-21 Final AOC Meeting Minutes
2020:Select 12-10-20 Final AOC Meeting Minutes 09-23-20 Final AOC Meeting Minutes 06-03-20 Final AOC Meeting Minutes 02-19-20 Final AOC Meeting Minutes
Reid Gardner Generating Station NDEP Correspondence 2026:Select 2026-01-21 1Q 2025 Revised Meeting Minutes Concurrence 2026-01-21 2Q 2025 Meeting Minutes Comments 2026-01-29 Revised 2024 Monitoring Report Concurrence 2026-01-30 Source Area 19 Groundwater Characterization Plan Concurrence
2025:Select 01-22-25 2025 Q3 Meeting Minutes Concurrence 01-22-25 Station Area Characterization Report Concurrence 02-10-25 Well Replacement Work Plan Concurrence 03-10-25 Sampling Modifications Concurrence 03-18-25 Coal Removal Memo Concurrence 04-23-25 Revised 2023 Monitoring Report Concurrence 05-07-25 Data Gap Phase II Location Concurrence 05-22-25 Q4 2024 AOC Meeting Minutes Comments Soil and Groundwater Management Plan Source Area 14 Concurrence 06-17-25 Source Area 14 LNAPL NFA 07-09-25, 2024 Q4 Meeting Minutes Concurrence 07-23-25 Well Maintenance and Abandonment Dissent 09-18-25 Q1 2025 Meeting Minutes Comments 10-09-25 Draft 2024 Monitoring Report Review and Comments 10-13-25 Source Area 19 Soil Characterization Rpt. and Response to Comments, Add'l. Comments
2024:Select 11-01-24 LNAPL Pre NFA 11-13-24 Q2 Meeting Minutes Concurrence 11-21-24 Concurrence with Work Plan, Pond Solids and Ash/Soil Fill Removal 09-26-24 Final Station Area SA-7 Unit 4 Settling Pond Characterization Report 09-23-24 Corrective Action Completion Report SA-4 WMU12 Coal Pile Area 09-13-24 Corrective Action Completion Report SA-4 Unit 1-3 Coal Pile Area 09-12-24 Draft 2023 Monitoring Report 08-23-24 Revised Draft Station Area A-19 Units 1-3 Report 08-21-24 Revised Draft Station Area Unit 4 Absorber Characterization Report 08-21-24 Revised Draft Conceptual Site Model and LNAPL Assessment SA-14 08-16-24 Corrective Action Work Plan Pond Soilds and Ash Soil Fill Removal 08-06-24 Railroad Ballast Underlying Soils Confirmation Sampling Data Summary Report 07-19-24 Q1 2024 Meeting Minutes 07-18-24 Corrective Action Completion Report SA-4 WMU12 07-17-24 Q4 AOC Meeting Minutes 06-20-24 Revised Station Area SA-7 Unit 4 Settling Pond Characterization Report 05-17-24 Revised Draft Corrective Action Work Plan SA-18 Ash Settling Ponds 2 and 3 05-17-24 Draft Q4 2023 AOC Meeting Minutes 05-17-24 Draft Interim Monitoring Plan Version 6.0 05-17-24 2022 Monitoring Report Response to Comments 03-28-24 Revised Q2 2023 AOC Meeting Minutes 03-28-24 Draft Corrective Action Work Plan SA-18 Ash Settling Ponds 2 and 3 03-27-24 Draft Station Area SA-7 Unit 4 Settling Pond Characterization Report 03-15-24 Revised Draft Station Area Well Installation Field Report 03-15-24 Q3 2023 AOC Meeting Minutes 01-25-24 Revised Conceptual Site Model Data Gaps Investigation Work Plan 01-25-24 Railroad Ballast Underlying Soils Confirmation Sampling Data Summary Report
2023:Select 12-14-23 Revised Draft Conceptual Site Model Data Gaps Investigation Work Plan 12-06-23 Revised Q1 2023 Meeting Minutes 12-05-23 Draft Station Area Well Installation Field Report 12-04-23 Draft Q2 2023 AOC Meeting Minutes 10-20-23 2022 Coal Pile Well Memo 10-11-2023 Data Validation Reports SA-3 Unit 4 10-09-23 NFA SA-9 Units 1 and 2 10-04-23 Draft Biological Resources Report 09-05-23 Revised SA-18 Waste and Site Characterization Report 09-05-23 Draft Conceptual Site Model Data Gaps Investigation Work Plan 08-18-23 SA-13 Completion Report and NFA Request 08-11-23 Draft Q1 2023 AOC Meeting Minutes 08-08-23 Draft 2022 Monitoring Report 08-23-2022 Coal Pile Area Memo 07-25-23 Draft SA-13 Completion Report and Closure Request 07-12-23 Revised Q4 2022 AOC Meeting Minutes 06-09-23 Revised Q3 AOC Meeting Minutes 06-09-23 Draft S-18 Waste and Site Characterization Report 05-02-23 Draft SA-13 Completion Report and Closure Request 05-01-23 Revised RR Ballast Removal Underlying Soils Sampling and Analysis Plan 04-28-23 Draft Q4 2022 AOC Meeting Minutes 03-30-23 Revised Q2 2022 Meeting Minutes and Responses 03-07-23 Draft Q3 2022 AOC Meeting Minutes 02-07-23 Q1 Meeting Minute Draft 01-25-23 SA9 Supplemental Characterization 01-11-23 2021 Monitoring Report 01-05-23 RR Ballast Removal Underlying Soils Sampling and Analysis Plan
2022:Select 09-07-22 Q1 2022 AOC Meeting Minutes Plan 08-01-22 Draft Station Well Installation Work Plan 07-19-22 Draft 2021 Monitoring Report 06-16-22 SA-3 Unit 4 Cooling Tower Catch Basin Work Plan and Responses to Comments 06-14-22 TP02 Excavation Plan Technical memorandum and Responses to Comments 06-01-22 Revised Q4 2021 Meeting Minutes and Response to Comments 06-01-22 Revised Q3 2021 Meeting Minutes and Responses to Comments 05-20-22 Revised TP06 Excavation Plan Technical Memorandum and Responses to Comments 05-13-22 Draft TP02 Excavation Plan Technical Memorandum 04-21-22 SA-9 Supplemental Work Plan and Responses to Comments 04-18-22 Draft TP06 Excavation Plan Technical Memorandum 04-13-22 Responses to NDEP Comments for Revised Background Addendum 03-31-22 Work Plan, Supplemental Characterization of Petroleum Impacted Soil, SA-9 Former Units 1 and 2 03-29-22 Draft SA-3 Unit 4 Cooling Tower Catch Basin Work Plan Comments 03-23-22 Pond Area 2 Former Ponds 4B and 4C Soil and Groundwater Characterization Report 03-17-22 Draft 2020 Monitoring Report Rev 1 and Responses to Comments 03-14-22 Revised Draft Pond Area PA5-7 Former Ponds D,E,F, and G Soil and Groundwater Characterization Report and Responses to Comments 03-11-22 Revised Conceptual Site Model Report Outline and Revised List of Diagrams/Figures/Graphs/Tables 02-24-22 Draft Pond Area PA-1 Hogan Wash Soil and Groundwater Report Table 2d 02-24-22 Draft Background Conditions Addendum 1 02-24-22 Draft December 2021 AOC Meeting Minutes 02-23-22 Draft October 7, 2021 AOC Meeting Minutes
2021:Select 12-15-21 Work Plan - Supplemental Removal of LNAPL, Petroleum SA-14 12-08-21 Daily Observer Report SA-4 Unit 1-3 and WMU-12 Coal Pile Area Ash/Soil fill Excavation Projects and Responses to Comments 12-01-21 Revised Q2 2021 AOC Meeting Minutes and Responses to Comments 12-01-21 SA-9 Units 1 and 2 Emergency Diesel Generator Soil Characterization Report, Draft Revision 1 and Responses to Comments 11-18-21 NDEP Review of Daily Observer Report during SA-4 Units 1-3 and WMU-12 Coal Pile Area Ash/Soil Fill Excavation Projects 11-18-21 Draft SA-19 Units 1-3 Scrubbers Soil Characterization Report 11-17-21 Data Validation Reports of SA-18 Site Characterization, February 2021 Sampling 10-05-21 Draft PA-5-7 Former Ponds D, E, F, and G Soil and Groundwater Characterization Report 10-05-21 Responses to May 7, 2021 Comments to the Draft 2019 Monitoring Report 10-01-21 Draft June 2021 AOC Meeting Minutes 10-01-21 March 2021 AOC Meeting Minutes 09-08-21 Revised Draft Pond Area PA-1 Hogan Wash Soil and Groundwater Characterization Report and Responses to Comments 08-31-21 RR Ballast Waste Profile Data Evaluation 08-31-21 Draft 2020 Monitoring Report Comments 07-26-21 Interim Monitoring Plan, Version 5.0 Concur 07-21-21 Corrective Action Work Plan, SA-4 WMU-12 Coal Pile Area, Draft Revision 1 07-21-21 Corrective Action Work Plan, SA-4 Units 1-3 Coal Pile Area. Draft Revision 1 07-21-21 Well Replacement and HM-48 Abandonment Concur 06-22-21 Revised Draft PA-2 Former Ponds 4B and 4C Soil and Groundwater Characterization Report 06-10-21 Draft SA-9 Units 1 and 2 Emergency Diesel Generator Soil Characterization Report 06-02-21 Revised Draft Pond Area PA-2 Former Ponds 4B and 4C Soil and Groundwater Characterization Report 05-14-21 Revised Station Area SA-7 Unit 4 Settling Pond Data Validation Report for Anions May 20,2020 Sampling Event 05-12-21 SA-4 Units 1-3 and SA-4 WMU-12 Coal Pile Areas Waste Profile Data Evaluation 05-07-21 Corrective Action Work Plan, SA-4 U4 Coal Pile Area 05-07-21 Corrective Action Work Plan, SA-4 U1-3 Coal Pile Area 05-07-21 Revised Draft 2019 Monitoring Report and Responses to Comments 04-21-21 Station Area SA-7 Unit 4 Settling Pond Data Validation Report 04-20-21 Draft December 2020 AOC Meeting Minutes 04-01-21 Draft Quality Assurance Project Plan, Version 2.5 and Responses to Comments 03-01-21 September 2020 Meeting Minutes and Responses to Comments 02-17-21 Draft Quality Assurance Project Plan, Version 2.5 02-09-21 Evaluation of Options for Well Replacement 02-02-21 Draft Background Conditions Report, Addendum 1 01-12-21 Sept 23, 2020 AOC Meeting Minutes
2020:Select 12-18-20 Draft SA-18: Ash Settling Ponds 1-3, Former Clear Wells, and former Fly Ash Dispoal Area, Waste and Site Characterization Sampling and Analysis Plan Responses to Comments 11-23-20 Draft Interim Monitoring Plan Version 4.0 11-19-20 Draft SA-18: Ash Settling Ponds 1-3, Former Clear Wells, and Former Fly Ash Disposal Area, Waste and Site Characterization Sampling and Analysis Plan 11-16-20 Draft 2018 Monitoring Report October 14, 2020 Responses to Comments 11-05-2020 Draft June 3, 2020 AOC Meeting Minutes 10-06-20 Data Validation Reports of Units 1 and 2 Emergency Diesel Generator Station Area SA-9 Soil Sampling Event on February 21, 2020 10-06-20 Data Validation Reports SA-19 Units 1-3 Scrubbers Soil Sampling Events on February 19-20, 2020 10-06-20 Data Validation Reports SA-19 Unit 4 Absorber Soil Sampling Event on February 11, 2020 10-01-20 Draft PA-2 Former Pond 4B and 4C Soil and Groundwater Characterization Report 09-23-20 Draft 2019 Monitoring Report 09-10-20 Final Draft, Coal Pile Test Pit Investigation 08-11-20 Draft June 3, 2020 AOC Meeting Minutes 08-05-20 Final Draft, Coal Pile Test Pit Investigation 07-24-20 Well Maintenance and Abandonment Plan 07-23-20 Draft Muddy River Investigation Report and Responses to Comments 07-23-20 Light Non-Aqueous Phase Liquid Assessment and Conceptual Site Model SA-14 07-08-20 Draft February 19, 2020 AOC Meeting Minutes Responses to Comments 06-29-20 2020 Well Maintenance and Abandonment Plan 06-29-20 Draft SA-4 Units 1-3 and SA-4 WMU-12 Coal Pile Areas Waste Profiling Sampling and Analysis Plan 06-29-20 Draft Railroad Ballast Waste Profile Work Plan 05-27-20 Draft February 19, 2020 AOC Meeting Minutes 05-20-20 Draft 2018 Monitoring Report and Responses to Comments 05-19-20 SA-4 Units 1-3 and SA-4 WMU-12 Coal Pile Areas Waste Profiling Sampling and Analysis Plan 05-05-20 Draft Pond Area PA-3 Former Pond 4A Soil and Groundwater Characterization Report 04-28-20 SA-9 Units 1 and 2 Emergency Diesel Generator Soil Characterization Work Plan 03-30-20 Final Draft Coal Pile Test Pit Investigation 02-26-20 Draft December 4, 2019 AOC Meetings Minutes 02-20-20 SA-9 Units 1 and 2 Emergency Diesel Generator Soil Characterization Work Plan 01-16-20 Draft SA-19 Unit 4 Absorber Soil Characterization Work Plan 01-16-20 Draft SA-19 Units 1-3 Scrubbers Soil Characterization Work Plan
Reid Gardner Generating Station Reports and Work Plans 2025:Select 06-30-25 Final 2023 Monitoring Report Part 1 06-30-25 Final 2023 Monitoring Report Part 2 06-30-25 Final 2023 Monitoring Report Part 3 03-12-25 Station Area Well Installation and Characterization Report 01-22-25 SA19 U4 Report 03-12-25 Monitoring Well Installation Q1 2025 Report 01-28-25 SA-14 Soil and Groundwater Management Plan 01-24-25 SA-14 Well Abandonment Logs 05-09-25 Additional Ballast Removal
2024:Select 04-2024 Station Area Well Installation Field Report Final Part 1 04-2024 Station Area Well Installation Field Report Final Part 2 04-2024 Station Area Well Installation Field Report Final Part 3 04-2024 Station Area Well Installation Field Report Final Part 4 04-2024 Station Area Well Installation Field Report Final Part 5 04-2024 Station Area Well Installation Field Report Final Part 6 07-17-2024 Station Area SA-7 Unit 4 Settling Pond Characterization Report Final Part 1 07-17-2024 Station Area SA-7 Unit 4 Settling Pond Characterization Report Final Part 2 07-17-2024_Station Area SA-7 Unit 4 Settling Pond Characterization Report Final Part 3 09-2024 Corrective Action Completion Report SA-4 Units_1-3 Part 1 09-2024 Corrective Action Completion Report SA-4 WMU12 Part 1
2023:Select 12-13-2023 SA-3 Data Validation Report Final 09-18-2023 SA-18 Waste and Site Characterization Report Final Part 1 09-18-2023 SA-18 Waste and Site Characterization Report Final Part 2 09-18-2023 SA-18 Waste and Site Characterization Report Final Part 3 09-18-2023 SA-18 Waste and Site Characterization Report Final Part 4 08-01-2023 SA-13 Completion Report Final Part 1 08-01-2023 SA-13 Completion Report Final Part 2 08-01-2023 SA-13 Completion Report Final Part 3 08-01-2023 SA-13 Completion Report Final Part 4 07-20-2023 SA-9 Supplemental Characterization Final Report 05-18-2023 Railroad Ballast Confirmation Sampling and Analysis Plan Final
2022:Select 06-2022 Final Monitoring Report 05-30-22 Final TP02 Technical Memorandum Excavation Plan 05-16-22 Final 2020 Monitoring Report Part 1 05-16-22 Final 2020 Monitoring Report Part 2 05-16-22 Final 2020 Monitoring Report Part 3 05-13-22 Final Background Addendum Part 1 05-13-22 Final Background Addendum Part 2 05-02-22 Final TP06 Technical Memorandum Excavation Plan 04-07-22 Final SA9 Supplemental Characterization Work Plan 03-28-22 Pond Area PA5-7 Former Ponds D, E, F, and G Soil and Groundwater Characterization Report
2021:Select 12-06-21 FinalSource Area SA-9 Units 1 and 2 Emergency Diesel Generator Soil Characterization Report 11-24-21 Draft Pond Area PA-1 Hogan Wash Soil and Groundwater Characterization Report 10-8-21 RR Ballast Waste Profile Data Evaluation Report Final and Appendices 08-24-21 Corrective Action Work Plan, SA-4 WMU-12 Coal Pile Area 08-24-21 Corrective Action Work Plan, SA-4 U1-3 Coal Pile Area 08-03-21 Final Interim Monitoring Plan Version 5.0 06-30-21 Pond Area PA-2 Former Ponds 4B and 4C Soil and Groundwater Characterization Report Final Part 1 06-30-21 Pond Area PA-2 Former Ponds 4B and 4C Soil and Groundwater Characterization Report Final Part 2 06-30-21 Pond Area PA-2 Former Ponds 4B and 4C Soil and Groundwater Characterization Report Final Part 3 06-02-21 Final 2019 Monitoring Report Part 1 06-02-21 Final 2019 Monitoring Report Part 2 06-02-21 Final 2019 Monitoring Report Part 3 03-31-21 Draft Pond Area PA-2 Former Ponds 4B and 4C Soil and Groundwater Characterization Report 01-04-21 Final SA-18 Waste and Site Characterization Sampling and Analysis Plan
2020:Select 04-29-20 Coal Ash Investigation Report Final and Attachments 07-30-20 Final Muddy River Report Appendices D-F Part 1 07-30-20 Final Muddy River Report Appendices D-F Part 2 07-30-20 Final Muddy River Report Appendices D-F Part 3 07-30-20 Final Muddy River Report Appendices D-F Part 4 07-30-20 Final Muddy River Report Appendices D-F Part 5 07-30-20 Final Muddy River Investigation Report 07-14-20 Draft Railroad Ballast Waste Profile Work Plan and Response to Comments 06-23-20 Draft SA-4 Waste Profile Work Plan and Response to Comments 06-09-20 Final 2018 Monitoring Report May 2020 Part 1 06-09-20 Final 2018 Monitoring Report May 2020 Part 2 06-09-20 Final 2018 Monitoring Report May 2020 Part 3 05-27-20 Pond Area PA-3 Former Pond 4A Soil and Groundwater Characterization Report Final Part 1 05-27-20 Pond Area PA-3 Former Pond 4A Soil and Groundwater Characterization Report Final Part 2 05-04-20 Station Area SA-9 Units 1 and 2 Emergency Diesel Generator Soil Characterization Work Plan 02-05-20 SA-19 Unit 4 Absorber Soil Characterization Work Plan 02-05-20 SA-7 Unit 4 Settling Pond (Foster Wheeler Pond) Soil Characterization Work Plan 01-14-20 Coal Pile Test Pit Investigation
Capstone Documents Select 05-10-21 Quality Assurance Project Plan Final Report Part 1 05-10-21 Quality Assurance Project Plan Final Report Part 2 07-30-20 Final Muddy River Report Appendix D Part 1 07-30-20 Final Muddy River Report Appendix D Part 2 07-30-20 Final Muddy River Report Appendix D Part 3 07-30-20 Final Muddy River Report Appendix D Part 4 07-30-20 Final Muddy River Report Appendix D Part 5 07-30-20 Final Muddy River Report Appendix D Part 6 07-30-20 Final Muddy River Report Appendices A-C, E, G-I 09-30-19 Final Density Memo 12-17-14 Reid Gardner Station Background Conditions Report Part 1 12-17-14 Reid Gardner Station Background Conditions Report Part 2 12-17-14 Reid Gardner Station Background Conditions Report Part 3 12-17-14 Reid Gardner Station Background Conditions Report Part 4 12-17-14 Reid Gardner Station Background Conditions Report Part 5 12-17-14 Reid Gardner Station Background Conditions Report Part 6 12-17-14 Reid Gardner Station Background Conditions Report Part 7 07-30-13 Reid Gardner Station Final Preliminary Source Area Identification and Characterization Report 02-20-2008 Final Administrative Order on Consent Signed
