The Coal Combustion Residual (CCR) Rule, is a self implementing rule which regulates the handling and disposal of CCRs as non-hazardous solid waste under Subtitle D of the Resource Conservation and Recovery Act (RCRA). CCR Rule requirements include regular evaluation of landfill and impoundment stability, to ensure safety in CCR handling and disposal and proactively mitigate signs of CCR unit distress. Owners/Operators are accountable for compliance with rule requirements, which is verified through routine inspections. Weekly, annual, and five year inspections are completed for ensured compliance.
As defined in the CCR Rule, the Rawhide Energy Station CCR impoundments are incised, meaning that the units were constructed deeper than natural ground and sit below the natural grade. These impoundments exhibit low hazard potential, as they do not have a diked portion. The incised pond reporting requirements are found in the CCR Rule (40 CFR 257).
Click here to download the EPA’s fact sheet on the Final Rule on Coal Combustion Residuals Generated by Electric Utilities
Click here to download the Rawhide Energy Station Dust Control Plan
Click here to download the 2017 Annual Dust Control Report for Rawhide Energy Station
Annual Report - Inspection of Applicable CCR Units
Annual structural stability evaluations will be completed to verify that applicable on-site CCR units have been designed, constructed, operated, and maintained appropriately. This annual assessment will identify any signs of distress or malfunction. A licensed professional engineer (PE) will complete this inspection and confirm that the CCR units can be safely used for their intended purpose. Results of each evaluation are posted within 30 days of completion.
The Monofill Closure Plan establishes procedures for closure of the landfill, in accordance with the CCR Rule and other applicable regulations. The Closure Plan discusses final cover and other closure procedures. This document is certified by a qualified professional engineer.
The Monofill Post-Closure Plan discusses procedures which will take place following the closure period including ongoing groundwater monitoring and minimizing erosion. This document is certified by a qualified professional engineer.
The Monofill Run-on/Run-off Plan explores the potential for run-on and/or run-off at the monofill by reviewing designs, observing operational practices, and evaluating potential stormwater conditions. The plan is certified by a qualified professional engineer.
The Impoundment Closure Plan, discusses the measures that will be taken to clean close the Rawhide Energy Station impoundments at a future date. Clean closure entails removal of all waste material and testing the ground to ensure it meets all applicable standards. The plan is certified by a qualified professional engineer.
Impoundment Post-Closure Plan
Since clean-closure is planned rather than closure in place, post-closure plans are not required because no waste material or contamination will remain.
Per the requirements set forth in the CCR rule, the inflow design of the CCR surface impoundments must demonstrate the ability to manage peak flows and flood water flows. A licensed professional engineer will complete this plan, and will certify that the impoundments will accommodate both peak flows and flood water flows.
Five Year Report—Structural Integrity Assessments for Applicable CCR Units
Periodic structural integrity evaluations will be conducted for qualifying on-site CCR surface units. A licensed professional engineer (PE) will complete this inspection and will perform a thorough structural analysis of the infrastructure to ensure stable and safe operations.
The CCR Rule compliance is effective October 19, 2015. In accordance with CCR Rule requirements, results of each evaluation are posted to this website within 30 days of completion and will remain publicly available for five years post-inspection.
The CCR Bottom Ash Transfer (BAT) Impoundment Groundwater Detection Monitoring Plan provides a description of the field, laboratory, and desktop activities that will be completed to perform the groundwater detection monitoring tasks at the CCR BAT Impoundments. All methods described herein are in accordance with best practices. This plan is certified by a qualified professional engineer.
The CCR Ash Monofill Groundwater Detection Monitoring Plan provides a description of the field, laboratory, and desktop activities that will be completed to perform the groundwater detection monitoring tasks at the CCR Monofill. All methods described herein are in accordance with best practices. This plan is certified by a qualified professional engineer.
Please direct any inquiries regarding Platte River’s management of CCRs to CCRinquiries@prpa.org.