Ongoing semiannual updates to the site Assessment of Corrective Measures are provided as attachments to Groundwater Monitoring and Corrective Action Reports

Location Restriction Demonstration

Placement above the uppermost Aquifer

Fault Areas

Seismic Impact Zone

Unstable Areas

Wetlands

AP-2

Design Criteria

History of Construction

Hazard Potential Classification Assessment (Amended October 2021)

Liner Design Criteria

Safety Factor Assessment (Amended October 2021)

Structural Stability Assessment (Amended October 2021)

Emergency Action Plan

Emergency Action Plan Annual Meeting - 2018

Emergency Action Plan Annual Meeting - 2019

Emergency Action Plan Annual Meeting - 2020

Emergency Action Plan Annual Meeting - 2021

Emergency Action Plan (Revised April 2022)

Emergency Action Plan Annual Meeting - 2022

Emergency Action Plan Annual Meeting - 2023

Operating Criteria

Fugitive Dust Control Plan (Amended December 2019)

Inflow Design Flood Control System Plan (Amended October 2021)

Annual Fugitive Dust Control Reports

Annual Fugitive Dust Control Report - 2016

Annual Fugitive Dust Control Report - 2017

Annual Fugitive Dust Control Report - 2018

Annual Fugitive Dust Control Report - 2019

Annual Fugitive Dust Control Report - 2020

Annual Fugitive Dust Control Report - 2021

Annual Fugitive Dust Control Report - 2022

Closure & Post Closure Care

Initial Written Closure Plan

Notification of Intent to Initiate Closure

Inspections

Annual Inspections

Annual Inspection - 2015

Annual Inspection - 2016

Annual Inspection - 2017

Annual Inspection - 2018

Annual Inspection - 2019

Annual Inspection - 2020

Annual Inspection - 2021

Annual Inspection - 2022

Groundwater

Statistical Method Certification (Amended January 2020)

Groundwater Monitoring Network Certification

Notice of Assessment Monitoring - May 2018

Appendix IV SSL Notifications

Appendix IV SSL Notification - November 2018

Appendix IV SSL Notification - March 2019

Appendix IV SSL Notification - August 2019

Appendix IV SSL Notification - January 2020

Appendix IV SSL Notification - August 2020

Appendix IV SSL Notification – January 2021

Appendix IV SSL Notification – July 2021

Appendix IV SSL Notification – January 2022

Appendix IV SSL Notification – July 2022

Appendix IV SSL Notification – January 2023

Groundwater Monitoring and Corrective Action Reports

Annual Groundwater Monitoring and Corrective Action Report - 2017

Annual Groundwater Monitoring and Corrective Action Report - 2018

Semi-Annual Groundwater Monitoring and Corrective Action Report - 2019

Annual Groundwater Monitoring and Corrective Action Report - 2019

Semi-Annual Groundwater Monitoring and Corrective Action Report - 2020

Annual Groundwater Monitoring and Corrective Action Report – 2020

Semi-Annual Groundwater Monitoring and Corrective Action Report - 2021

Annual Groundwater Monitoring and Corrective Action Report – 2021

Semi-Annual Groundwater Monitoring and Corrective Action Report - 2022

Annual Groundwater Monitoring and Corrective Action Report – 2022

Assessment of Corrective Measures

Notice of Assessment of Corrective Measures - February 2019

Assessment of Corrective Measures Report - 2019

Assessment of Corrective Measures Semi-Annual Progress Report - 2019

Draft Remedy Selection Report – August 2022

Ongoing semiannual updates to the site Assessment of Corrective Measures are provided as attachments to Groundwater Monitoring and Corrective Action Reports