Associated’s first Environmental, Social and Governance report, designed to showcase the focus, work and accomplishments of our cooperative in these three key areas, is available on our website.
Coal Combustion Residuals
CCR rule compliance data and information
As a member-owned cooperative, Associated Electric Cooperative focuses on serving its members with clean, affordable, reliable electricity that is balanced with environmental stewardship of our natural resources.
Associated has a strong, proactive record of compliance with pertinent local, state and federal environmental regulations, including the Coal Combustion Residuals (CCR) rule. In accordance with that rule, this website provides information on our ash-handling facilities at the New Madrid and Thomas Hill generating stations. The required information will be posted when it is available.
Learn more about us and our environmental stewardship.
New Madrid Power Plant
The New Madrid Power Plant is important to Associated Electric Cooperative’s mission of providing an affordable and reliable power supply to member cooperatives and the members they serve.
Associated Electric employs about 180 people at the plant, which is comprised of two coal-based electric generating units. Read more about the plant.
Contact environmental staff at the plant, 573-643-2211, or email ccr@aeci.org.
Annual CCR Fugitive Dust Control Report - 2023
Annual CCR Fugitive Dust Control Report - 2022
Annual CCR Fugitive Dust Control Report - 2021
Annual CCR Fugitive Dust Control Report - 2020
Annual CCR Fugitive Dust Control Report - 2019
Annual CCR Fugitive Dust Control Report - 2018
Annual CCR Fugitive Dust Control Report - 2017
Annual EAP Meeting Documentation
New Madrid Pond 003 SSL Notification
2023 Annual Groundwater Monitoring and Corrective Action Report
Pond 003 NOI to Initiate Pond Closure
2022 Annual Groundwater Monitoring and Corrective Action Report
Statistically Significant Level Notification - August 2022
2022 Annual EAP Meeting Documentation
Statistically Significant Level Notification - February 2022
Semi-Annual Remedy Selection Progress Report - September 2022
Semi-Annual Remedy Selection Progress Report - March 2022
Alternate to Initiation of Closure Deadline - Additional Information
Statistically Significant Level Notification - August 2021
2021 Annual Groundwater Monitoring and Corrective Action Report
2021 Annual EAP Meeting Documentation
Alternate to Initiation of Closure Deadline – EPA Completeness Determination
Hazard Potential Classification
Structural Stability Assessment
Inflow Design Flood Control System Plan
Annual Inspection and Stability Assessments Documentation of Corrective Measures
February 2021 SSL Notification
Semi-Annual Remedy Selection Progress Report - September 2021
Semi-Annual Remedy Selection Progress Report - March 2021
2020 Annual Groundwater Monitoring and Corrective Action Report
2020 Annual EAP Meeting Documentation
Statistically Significant Level Notification – August 2020 Sampling Event
2019 Annual EAP Meeting Documentation
2019 Annual Groundwater Monitoring and Corrective Action Report
2018 Annual EAP Meeting Documentation
2018 Annual Groundwater Monitoring and Corrective Action Report
2017 Annual Groundwater Monitoring and Corrective Action Report
Alternate to Initiation of Closure Deadline
Alternate to Initiation of Closure Deadline Addendum - 1 of 3
Alternate to Initiation of Closure Deadline Addendum - 2 of 3
Alternate to Initiation of Closure Deadline Addendum - 3 of 3
Assessment Monitoring Statistical Procedures Certification
Corrective Measures Assessment
February 2020 SSL Notification
Initiation of Assessment of Corrective Measures
Inspection Deficiencies and Remedies Memo
Location Restrictions - Fault Area Certification
Location Restrictions - Placement Above Uppermost Aquifer Certification
Location Restrictions - Seismic Impact Zone Certification
Location Restrictions - Unstable Areas Certification
Location Restrictions - Wetlands Certification
March 2020 CMA Semi-Annual Progress Report
Semi-Annual Remedy Selection Progress Report - September 2020
Statistically Significant Level Notification
Statistically Significant Level Notification - March 2019
Statistically Significant Level Notification - September 2019
2021 Annual Groundwater Monitoring and Corrective Action Report
Annual Inspection and Stability Assessments Documentation of Corrective Measures
2020 Annual Groundwater Monitoring and Corrective Action Report
2020 Annual EAP Meeting Documentation
2019 Annual EAP Meeting Documentation
2019 Annual Groundwater Monitoring and Corrective Action Report
2018 Annual EAP Meeting Documentation
2018 Annual Groundwater Monitoring and Corrective Action Report
2017 Annual Groundwater Monitoring and Corrective Action Report
Assessment Monitoring Statistical Procedures Certification
Hazard Potential Classification
Inflow Design Flood Control System Plan
Inspection Deficiencies and Remedies Memo
Location Restrictions - Fault Area Certification
Location Restrictions - Placement Above Uppermost Aquifer Certification
Location Restrictions - Seismic Impact Zone Certification
Location Restrictions - Unstable Areas Certification
Location Restrictions - Wetlands Certification
2023 Annual Groundwater Monitoring and Corrective Action Report
Statistically Significant Level Notification - February 2022
2022 Annual Groundwater Monitoring and Corrective Action Report
2021 Annual EAP Meeting Documentation
2021 Annual Groundwater Monitoring and Corrective Action Report
Annual Inspection and Stability Assessments Documentation of Corrective Measures
2020 Annual EAP Meeting Documentation
2020 Annual Groundwater Monitoring and Corrective Action Report
2020 Notification Establishing Assessment Monitoring
Assessment Monitoring Statistical Procedures Certification
Statistically Significant Level Notification – February 2020 Sampling Event
2019 Annual EAP Meeting Documentation
2019 Annual Groundwater Report
2018 Annual EAP Meeting Documentation
Closure of Inactive CCR Surface Impoundment Notification
February 2020 SSL Notification
Inflow Design Flood Control System Plan
Inspection Deficiencies and Remedies Memo
Location Restrictions - Fault Area Certification
Location Restrictions - Placement Above Uppermost Aquifer Certification
Location Restrictions - Unstable Area Certification
Location Restrictions - Seismic Impact Zone Certification
Location Restrictions - Wetlands Certification
Structural Stability Assessment
*See Structural Stability Assessment for 2018 Annual CCR Inspection
2023 Annual Groundwater Monitoring and Corrective Action Report
2022 Annual Groundwater Monitoring and Corrective Action Report
Run-On and Run-Off Control System Plan Update Q1 2023
Run-On and Run-Off Control Plan
July 2021 Annual CCR Inspection
2021 Annual Groundwater Monitoring and Corrective Action Report
Annual Inspection and Stability Assessments Documentation of Corrective Measures
2020 Annual Groundwater Monitoring and Corrective Action Report
2019 Annual Groundwater Monitoring and Corrective Action Report
2018 Annual Groundwater Monitoring and Corrective Action Report
2017 Annual Groundwater Monitoring and Corrective Action Report
Inspection Deficiencies and Remedies Memo
Location Restrictions - Unstable Areas Certification
Thomas Hill Energy Center
Associated Electric employs about 215 people at Thomas Hill Energy Center, comprised of three electrical generating units totaling 1,153 megawatts, that produce clean, affordable, reliable electricity for member cooperatives. Learn more about this important resource for members.
Contact environmental staff at the plant at 660-261-4211, or email ccr@aeci.org.
Annual CCR Fugitive Dust Control Report - 2022
Annual CCR Fugitive Dust Control Report - 2021
Annual CCR Fugitive Dust Control Report - 2020
Annual CCR Fugitive Dust Control Report - 2019
Annual CCR Fugitive Dust Control Report - 2018
Annual CCR Fugitive Dust Control Report - 2017
CCR Rule Part A Demonstration - Withdraw
Alternate to Initiation of Closure Deadline - Update
Alternate to Initiation of Closure Deadline – EPA Completeness Determination
Alternate to Initiation of Closure Deadline – Additional Information
Notice of Intent to Initiate Closure
Hazard Potential Classification
Structural Stability Assessment
Inflow Design Flood Control System Plan
Annual Inspection and Stability Assessments Documentation of Corrective Measures
Alternate to Initiation of Closure Deadline
Alternate to Initiation of Closure Deadline Addendum
Inspection Deficiencies and Remedies Memo
Location Restrictions - Fault Area Certification
Location Restrictions - Placement Above Uppermost Aquifer Certification
Location Restrictions - Seismic Impact Zone Certification
Location Restrictions - Unstable Areas Certification
Location Restrictions - Wetlands Certification
* See Structural Stability Assessment for 2021 Annual CCR Inspection
Written Closure Plan Update - Q1 2023
CCR Rule Part A Demonstration - Withdraw
Alternate to Initiation of Closure Deadline - Update
Alternate to Initiation of Closure Deadline – EPA Completeness Determination
Alternate to Initiation of Closure Deadline – Additional Information
Hazard Potential Classification
Structural Stability Assessment
Inflow Design Flood Control System Plan
Annual Inspection and Stability Assessments Documentation of Corrective Measures
Alternate to Initiation of Closure Deadline
Alternate to Initiation of Closure Deadline Addendum
Inspection Deficiencies and Remedies Memo
Location Restrictions - Fault Area Certification
Location Restrictions - Placement Above Uppermost Aquifer Certification
Location Restrictions - Seismic Impact Zone Certification
Location Restrictions - Unstable Areas Certification
Location Restrictions - Wetlands Certification
* See Structural Stability Assessment for 2021 Annual CCR Inspection
Written Closure Plan Update - Q1 2023
CCR Rule Part A Demonstration - Withdraw
Alternate to Initiation of Closure Deadline - Update
Alternate to Initiation of Closure Deadline – EPA Completeness Determination
Alternate to Initiation of Closure Deadline – Additional Information
Hazard Potential Classification
Structural Stability Assessment
Inflow Design Flood Control System Plan
Annual Inspection and Stability Assessments Documentation of Corrective Measures
Alternate to Initiation of Closure Deadline
Alternate to Initiation of Closure Deadline Addendum
Inspection Deficiencies and Remedies Memo
Location Restrictions - Fault Area Certification
Location Restrictions - Placement Above Uppermost Aquifer Certification
Location Restrictions - Seismic Impact Zone Certification
Location Restrictions - Unstable Areas Certification
Location Restrictions - Wetlands Certification
* See Structural Stability Assessment for 2021 Annual CCR Inspection
2023 Annual Groundwater Monitoring and Corrective Action Report
2022 Annual Groundwater Monitoring and Corrective Action Report
2021 Annual Groundwater Monitoring and Corrective Action Report
2020 Annual Groundwater Monitoring and Corrective Action Report
2019 Annual Groundwater Monitoring and Corrective Action Report
2018 Annual Groundwater Monitoring and Corrective Action Report
Initial Statistical Methods Certification
2017 Annual Groundwater Monitoring and Corrective Action Report
Initial Groundwater Monitoring Certification
Cell 001 - 2016 Structural stability assessment
Cell 001 - 2016 Safety factor assessment
Cell 001 - 2016 Inflow design flood control system plan
Cell 001 - 2016 Hazard potential classification assessment
Cell 003 - 2016 Structural stability assessment
Cell 003 - 2016 Safety factor assessment
Cell 003 - 2016 Inflow design flood control system plan
Cell 003 - 2016 Hazard potential classification assessment
Cell 004 - 2016 Structural stability assessment
Cell 004 - 2016 Safety factor assessment