Documents:

2015 Talen MT CSES CCR Fugitive Dust Control Plan-3 & 4 Bottom Ash Pond

Colstrip 3&4 Bottom Ash Pond-CCR Liner Construction Documentation Report October 2016

Colstrip 34 Bottom Ash Pond CCR Post Closure Plan October 2016 34 BAP

Colstrip 34 Bottom Ash Pond CCR Hazard Potential Classification Assessment October 2016

Colstrip 34 Bottom Ash Pond CCR Structural Stability Assessment October 2016

Colstrip 34 Bottom Ash Pond CCR Units 34 EHP Safety Factor Assessments October 2016

Colstrip 3-4 Bottom Ash Pond CCR Written Closure Plan October 2016

Colstrip-3-4-Bottom-Ash-Pond-CCR-Inflow-Design-Flood-Control-System-Plan-October-2016-34BAP

Colstrip-3-4-Bottom-Ash-Pond-CCR History of Construction Report October 2016 34BAP

2016 Colstrip Annual CCR Fugitive Dust Control Report 3 and 4 Bottom Ash Pond

Colstrip-3-4-Bottom-Ash-Pond-CCR-Groundwater-Monitoring-Plan-Certification-Oct-2017

Colstrip-3-4-Bottom-Ash-Pond-CCR-Groundwater-Monitoring-Statistical-Method-Certification-Oct-2017

2017-Colstrip-Annual-CCR-Fugitive-Dust-Control-Report-34-BA

2017-Colstrip-CCR-Annual-Groundwater-Monitoring-Corrective-Action-Report-3-4-Bottom-Ash

Colstrip 3-4 Bottom Ash/Easier View of 2017 Colstrip CCR Annul Groundwater Monitoring Corrective Action Report 3-4 BA.pdf

CCR Rule Assessment Notification Colstrip 257.94e3 5_8_18 - 3&4 Bottom Ash Pond

CCR Rule SSL Notification Colstrip 257.95(g) - 3&4 Bottom Ash Pond

MD18058 Location Restrictions - Colstrip Reduced - 3&4 Bottom Ash Pond

Talen Colstrip 2018 Fugitive Dust Control Report - 3&4 Bottom Ash Pond

2018 Annual Groundwater Monitoring and Corrective Action Report - 3&4 Bottom Ash Pond

Notification of Assessment of Corrective Action - 3&4 Bottom Ash Pond

Assessment of Corrective Measures - 3&4 Bottom Ash Pond

U34 BA Ponds Notification of Intent to Close

CCR Rule SSL Notification Colstrip 257.95(g) Spring 2019 - 3&4 Bottom Ash

2019 Annual Fugitive Dust Control Report - 3&4 Bottom Ash

2019 Annual Groundwater Monitoring and Corrective Action Report - 3&4 Bottom Ash

Selection of Remedy Plant Site Final 3&4 Bottom Ash

CCR Rule SSL Notification Colstrip 257.95(g) Spring 2020 - 3&4 Bottom Ash

CCR Rule SSL Notification Colstrip 257.95(g) Fall 2020 - 3&4 Bottom Ash

2020 Annual Fugitive Dust Control Report - 3&4 Bottom Ash

2020 CSES Annual Inspection Report - 3&4 Bottom Ash

2020 Annual Groundwater Monitoring and Corrective Action Report -3&4 Bottom Ash

Colstrip Written Closure Plan Updated May 2021 - 3&4 Bottom Ash

2021 Structural Stability Assessment - 3&4 Bottom Ash

CCR Rule SSL Notification Colstrip 257.95(g) Spring 2021 - 3&4 Bottom Ash

Fall 2021 Progress Report - 3&4 Bottom Ash

2021 Safety Factor Assessments - 3&4 Bottom Ash

2021 Annual Fugitive Dust Control Report - 3&4 Bottom Ash

SSL Notification Colstrip 257.95(g) Fall 2021 - 3&4 Bottom Ash

2021 Annual Groundwater Monitoring and Corrective Action Report - 3&4 Bottom Ash

U34 BA Ponds Notification of Closure Completion and Closure Certification Statement

CCR Rule SSL Notification Colstrip 257.95(g) Spring 2022 - 3&4 Bottom Ash

2022 Annual Fugitive Dust Report - 3&4 Bottom Ash

CCR Rule SSL Notification Colstrip 257.95(g) Fall 2022 - 3&4 Bottom Ash

2022 Annual Groundwater and Corrective Action Report - 3&4 Bottom Ash

Written Closure Plan Updated June 2023 - 3&4 Bottom Ash

CCR Rule_SSL_Notificaton_Colstrip_257.95(g)_spring2023 - 3&4 Bottom Ash

Colstrip U34 Plantsite Bottom Ash CCR Hazard Potential Classification Assessment October 2023

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