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Coal Combustion Residuals

A purple flower glistening in the morning sun in a field near Thomas Hill Energy Center.

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 recent 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.

Hazard Potential Classification

Structural Stability Assessment

Inflow Design Flood Control System Plan

Safety Factor Assessment

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

2021 Annual CCR Inspection

2020 Annual EAP Meeting Documentation

2020 Annual CCR Inspection

Statistically Significant Level Notification – August 2020 Sampling Event

2019 Annual CCR Inspection

2019 Annual EAP Meeting Documentation

2019 Annual Groundwater Monitoring and Corrective Action Report

2018 Annual CCR Inspection

2018 Annual EAP Meeting Documentation

2018 Annual Groundwater Monitoring and Corrective Action Report

2017 Annual CCR Inspection

2017 Annual Groundwater Monitoring and Corrective Action Report

2016 Annual CCR Inspection

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

Closure Plan

Corrective Measures Assessment

Emergency Action Plan

February 2020 SSL Notification

History of Construction

Initiation of Assessment of Corrective Measures

Inspection Deficiencies and Remedies Memo

Liner Design Criteria

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

Post-Closure Plan

Semi-Annual Remedy Selection Progress Report - September 2020

Statistically Significant Level Notification

Statistically Significant Level Notification - March 2019

Statistically Significant Level Notification - September 2019

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.

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