Otter Tail Power Company
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    • Temporary Storage Area
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  • Ash Fill Disposal Area 21-21
  • Slag Pond
  • Temporary Storage Area

Ash Fill Disposal Area 21-21

Big Stone Plant's Ash Fill Disposal area is permitted by the South Dakota Department of Agriculture and Natural Resources.

Fugitive Dust Control Plan

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 Annual Fugitive Dust Control Report

2023 Annual Fugitive Dust Control Report

2024 Annual Fugitive Dust Control Report

2015 Landfill Annual Inspection Report

2016 Landfill Annual Inspection Report

2017 Landfill Annual Inspection Report

2018 Landfill Annual Inspection Report

2019 Landfill Annual Inspection Report

2020 Landfill Annual Inspection Report

2021 Landfill Annual Inspection Report

2022 Landfill Annual Inspection Report

2023 Landfill Annual Inspection Report

2024 Landfill Annual Inspection Report

2021 Closure Plan

Post Closure Care Plan

2024 Run on Run Off Plan

2024 Revised Groundwater Monitoring Network Certification

Statistical Analysis Plan

2017 Landfill GW and Corrective Action Report

2018 Landfill GW and Corrective Action Report

2019 Landfill GW and Corrective Action Report

2020 Landfill GW and Corrective Action Report

2021 Landfill GW and Corrective Action Report

2022 Landfill GW and Corrective Action Report

2023 Landfill GW and Corrective Action Report Rev 1

2024 Landfill GW and Corrective Action Report

Location Restrictions

An Otter Tail Company

Big Stone Plant CCR