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Colbert CCR Documents (Area 4)
Surface Impoundment - Ash Disposal Area 4
Closure - Post-Closure Plan
Alternative Closure
- No documents at this time.
Closure Plan
- 257-102(b)_Written Closure Plan_COF_Ash Disposal Area 4 (pdf, 1217 KB)
- 257.102(h)_Certification of Closure_COF_Ash Disposal Area 4 (pdf, 27 KB)
Post-Closure Plan
- 257-104(d)_Written Post-Closure Plan_COF_Ash Disposal Area 4 (pdf, 1217 KB)
Retrofitting
- No documents at this time.
Closure Status
NOI to Initiate Closure
- 257-102(g)_NOI to Initiate Closure_COF_Ash Disposal Area 4 - Copy (pdf, 149 KB)
- 257-102(g)_NOI to Initiate Closure_COF_Ash Disposal Area 4 (pdf, 149 KB)
Design Criteria
Emergency Action Plan
- 257-73(a)(3)_Most Recent Emergency Action Plan_COF_Ash Disposal Area 4_2024 (pdf, 1755 KB)
- 257-73(a)(3)(i)(E) _Annual Face-to-Face meeting_COF_Ash Disposal Area 4 2024 (pdf, 180 KB)
- 257-73(a)(3)(i)(E) _Annual Face-to-Face meeting_COF_Ash Disposal Area 4 2023 (pdf, 45 KB)
- 257-73(a)(3)(i)(E) _Annual Face-to-Face meeting_COF_Ash Disposal Area 4 2022 (pdf, 223 KB)
- 257-73(a)(3)(i)(E) _Annual Face-to-Face meeting_COF_Ash Disposal Area 4 2021 (pdf, 80 KB)
- 257-73(a)(3)(i)(E) _Annual Face-to-Face meeting_COF_Ash Disposal Area 4 2020 (pdf, 795 KB)
- 257-73(a)(3)(i)(E) _Annual Face-to-Face meeting_COF_Ash Disposal Area 4 2019 (pdf, 312 KB)
- 257-73(a)(3)(i)(E) _Annual Face-to-Face meeting_COF_Ash Disposal Area 4 (pdf, 245 KB)
Hazard Potential Classification
- 257-73(a)(2)_Periodic Hazard Potential Classification_COF_Ash Disposal Area 4_2021 - Final (pdf, 2046 KB)
- 257-73(a)(2)_Hazard Potential Classification_COF_Ash Disposal Area 4 (pdf, 1849 KB)
History of Construction
- 257-73(c)_History of Construction_COF_Ash Disposal Area 4 (pdf, 75254 KB)
Liner Design
- 257-71_Liner Design_COF_Ash Disposal Area 4 (pdf, 1083 KB)
Marker
- No documents at this time.
Safety Factor
- 257-73(e)_Safety Factor_COF_Ash Disposal Area 4 (pdf, 62 KB)
Structural Stability
- 257-73(d)_Structural Stability_COF_Ash Disposal Area 4 (pdf, 5893 KB)
- 257-73(d)_Periodic Structural Stability_COF_Ash Disposal Area 4_2021 - Final (pdf, 2952 KB)
Groundwater Monitoring
Annual Groundwater Report
- 257-90(e)_Annual Groundwater Monitoring Report_COF_Ash Disposal Area 4 (pdf, 1597 KB)
- 257.90(e)_Annual_Groundwater_Monitoring_Report_COF_Ash_Disposal_Area_4_2023 (pdf, 49754 KB)
- 257.90(e)_Annual_Groundwater_Monitoring_Report_COF_Ash_Disposal_Area_4_2022 (pdf, 17857 KB)
- 257.90(e)_Annual_Groundwater_Monitoring_Report_COF_Ash_Disposal_Area_4_2021 (pdf, 13431 KB)
- 257.90(e)_Annual Groundwater Monitoring Report_COF_Ash Disposal Area 4_2019 (pdf, 2235 KB)
- 257.90(e)_Annual Groundwater Monitoring Report_COF_Ash Disposal Area 4_2018 (pdf, 1387 KB)
- 257.90(e)_Annual Groundwater Monitoring Report_COF_Ash Disposal Area 4 2020 (pdf, 3594 KB)
Assessment Monitoring
- TVA NOTICE OF ESTABLISHMENT OF AN ASSESSMENT MONITORING PROGRAM COF ASH DISPOSAL AREA 4 (pdf, 174 KB)
- 257-95(g)_notification_appiv_gwps_exceed_COF_ash_disposal_area_4_year_end_2024 (pdf, 181 KB)
- 257-95(g)_notification_appiv_gwps_exceed_COF_ash_disposal_area_4_year_end_2023 (pdf, 180 KB)
- 257-95(g)_notification_appiv_gwps_exceed_COF_ash_disposal_area_4_midyear_2024 (pdf, 179 KB)
- 257-95(g)_notification_appiv_gwps_exceed_COF_ash_disposal_area_4_midyear_2023 (pdf, 177 KB)
- 257-95(g)_notification_appiv_gwps_exceed_COF_ash_disposal_area_4_2022 (pdf, 168 KB)
- 257-95(g)_Notification_appiv_gwps_End of Year_COF_Ash_Disposal_Area_4_2022 Rev 1 (pdf, 217 KB)
- 257-95(g)_Notification_AppIV GWPS Midyear Update_COF_Ash Disposal Area 4_2020 (pdf, 169 KB)
- 257-95(g)_Notification AppIV GWPS Midyear Update_COF_Ash Disposal Area 4_2021 (pdf, 153 KB)
- 257-95(g)_Notification AppIV GWPS Exceed_COF_Ash Disposal Area 4 (pdf, 128 KB)
- 257-95(g)_Notification AppIV GWPS Annual Update_COF_Ash Disposal Area 4 (pdf, 166 KB)
Corrective Measures
- 257-96(d)_Corrective Measures Assessment_COF_Ash Disposal Area 4 (pdf, 4688 KB)
- 257-95(g)(5)_Corrective Measures Notification_COF_Ash Disposal Area 4 (pdf, 56 KB)
- 257.97(a)_2025_11th_Semiannual_Progress_Report_COF_Ash_Disposal_Area_4 (pdf, 10013 KB)
- 257.97(a)_2024_9th_Semiannual_Progress_Report_COF_Ash_Disposal_Area_4 (pdf, 11019 KB)
- 257.97(a)_2024_10th_Semiannual_Progress_Report_COF_Ash_Disposal_Area_4 (pdf, 12889 KB)
- 257.97(a)_2023_8th_Semiannual_Progress_Report_COF_Ash_Disposal_Area_4 (pdf, 9701 KB)
- 257.97(a)_2023_7th_Semiannual_Progress_Report_COF_Ash_Disposal_Area_4 (pdf, 12847 KB)
- 257.97(a)_2022_6th_Semiannual_Progress_Report_COF_Ash_Disposal_Area_4 (pdf, 8773 KB)
- 257.97(a)_2022_5th_Semiannual_Progress_Report_COF_Ash_Disposal_Area_4 (pdf, 7036 KB)
- 257.97(a)_2021_4th Semiannual Progress Report_COF_Ash Disposal Area 4 (pdf, 5753 KB)
- 257.97(a)_2021_3rd Semiannual Progress Report_COF_Ash Disposal Area 4 (pdf, 5607 KB)
- 257.97(a)_2020_2nd Semiannual Progress Report_COF_Ash Disposal Area 4 (pdf, 2514 KB)
- 257.97(a)_2020_1st Semiannual Progress Report 1_COF_Ash Disposal Area 4 (pdf, 2849 KB)
Detection Monitoring
- No documents at this time.
Groundwater Instrumentation
- 257-93(f)(6)_Statistical_Method_Cert_COF_Ash_Disposal_Area_4_2022_Rev2_2022 (pdf, 343 KB)
- 257-93(f)(6)_Statistical Method Cert_COF_Ash Disposal Area 4 (pdf, 155 KB)
- 257-91(f)_GW_Monitoring_System_Cert_COF_Ash_Disposal_Area_4_Rev3_2022 (pdf, 1111 KB)
- 257-91(f)_GW_Monitoring_System_Cert_COF_Ash_Disposal_Area_4_Rev2_2021 (pdf, 1127 KB)
- 257-91(f)_GW_Monitoring_System_Cert_COF_Ash_Disposal_Area_4_2021 (pdf, 1067 KB)
- 257-91(f)_GW Monitoring System Cert_COF_Ash Disposal Area 4 (pdf, 739 KB)
- 257_93(f)(6)_Statistical_Method_Cert_COF_Ash_Disposal_Area_4_2021 (pdf, 544 KB)
Location Restrictions
Fault Areas
- Not Applicable Facility is Closed (pdf, 47 KB)
Placement Above the Uppermost Aquifer
- Not Applicable Facility is Closed (pdf, 47 KB)
Seismic Impact Zones
- Not Applicable Facility is Closed (pdf, 47 KB)
Unstable Areas
- Not Applicable Facility is Closed (pdf, 47 KB)
Wetlands
- Not Applicable Facility is Closed (pdf, 47 KB)
Operating Criteria
Air Criteria
- 257-80(c)_Annual Fugitive Dust Control Report_COF_Ash Disposal Area 4 2024 (pdf, 144 KB)
- 257-80(c)_Annual Fugitive Dust Control Report_COF_Ash Disposal Area 4 2023 (pdf, 102 KB)
- 257-80(c)_Annual Fugitive Dust Control Report_COF_Ash Disposal Area 4 2022 (pdf, 103 KB)
- 257-80(c)_Annual Fugitive Dust Control Report_COF_Ash Disposal Area 4 2021 (pdf, 102 KB)
- 257-80(c)_Annual Fugitive Dust Control Report_COF_Ash Disposal Area 4 2020 (pdf, 271 KB)
- 257-80(c)_Annual Fugitive Dust Control Report_COF_Ash Disposal Area 4 2019 (pdf, 102 KB)
- 257-80(c)_Annual Fugitive Dust Control Report_COF_Ash Disposal Area 4 2018 (pdf, 20 KB)
- 257-80(c)_Annual Fugitive Dust Control Report_COF_Ash Disposal Area 4 2017 (pdf, 20 KB)
- 257-80(c)_Annual Fugitive Dust Control Report_COF_Ash Disposal Area 4 (pdf, 14 KB)
- 257-80(b)_Fugitive Dust Control Plan_COF_Ash Disposal Area 4 2019 (pdf, 525 KB)
Inflow Design Flood Controls
- 257-82(c)_Periodic Inflow Design Flood Controls_COF_Ash Disposal Area 4_2021 - Final (pdf, 4441 KB)
- 257-82(c)_Inflow Design Flood Controls_COF_Ash Disposal Area 4 (pdf, 655 KB)
Inspection Requirements
- 257-83(b)(2)_Inspection Report_COF_Ash Disposal Area 4 2024 (pdf, 4795 KB)
- 257-83(b)(2)_Inspection Report_COF_Ash Disposal Area 4 2023 (pdf, 3239 KB)
- 257-83(b)(2)_Inspection Report_COF_Ash Disposal Area 4 2022 (pdf, 3907 KB)
- 257-83(b)(2)_Inspection Report_COF_Ash Disposal Area 4 2021 (pdf, 2698 KB)
- 257-83(b)(2)_Inspection Report_COF_Ash Disposal Area 4 2020 (pdf, 1570 KB)
- 257-83(b)(2)_Inspection Report_COF_Ash Disposal Area 4 2019 (pdf, 1878 KB)
- 257-83(b)(2)_Inspection Report_COF_Ash Disposal Area 4 2018 (pdf, 3564 KB)
- 257-83(b)(2)_Inspection Report_COF_Ash Disposal Area 4 2017 (pdf, 5208 KB)
- 257-83(b)(2)_Inspection Report_COF_Ash Disposal Area 4 2016.2 (pdf, 19124 KB)
- 257-83(b)(2)_Inspection Report_COF_Ash Disposal Area 4 2016 (pdf, 13175 KB)
- 257-83(b)(2)_Inspection Report_COF_Ash Disposal Area 4 (pdf, 7114 KB)
Colbert CCR Rule Groundwater Monitoring Documents
Colbert Groundwater Monitoring Fact Sheet
2019 Colbert Assessment of Corrective Measures Report
2020 Colbert Second Semiannual Groundwater Report
Semiannual Report on Progress of Remedy Selection Fact Sheet
Colbert Ash Disposal Area 4 Groundwater Monitoring Report
More Information
For more information on EPA's CCR Rule environmental studies and activities at other TVA Fossil Plants, visit here.
Contact Us
If you have any questions related to coal ash (CCR), please email [email protected].