| Date Filed | Summary | Pages |
| 10/11/2022 | Notification of Construction Completion electronically filed by Ms. Devan K. Flahive on behalf of American Transmission Systems Incorporated. | 2 |
| 02/07/2022 | Construction Start Notice electronically filed by Ms. Devan K. Flahive on behalf of American Transmission Systems Incorporated. | 2 |
| 01/28/2022 | Service Notice. | 2 |
| 01/28/2022 | Staff Report of Investigation electronically filed by Mr. Matt Butler on behalf of Staff of OPSB. | 5 |
| 01/06/2022 | Supplemental Response to Second Set of Data Requests from OPSB Staff electronically filed by Ms. Devan K. Flahive on behalf of American Transmission Systems Incorporated. | 3 |
| 12/22/2021 | Response to OPSB Staff's Second Set of Data Requests electronically filed by Ms. Devan K. Flahive on behalf of American Transmission Systems Incorporated. | 3 |
| 12/16/2021 | Supplemental Response of American Transmission Systems, Incorporated to First Set of Data Requests from OPSB Staff electronically filed by Ms. Devan K. Flahive on behalf of American Transmission Systems Incorporated. | 3 |
| 11/30/2021 | American Transmission Systems, Incorporated's Responses to First Set of Data Requests from OPSB Staff electronically filed by Ms. Devan K. Flahive on behalf of American Transmission Systems Incorporated. | 3 |
| 11/30/2021 | Proof of Publication and Public Notice Letters for Project electronically filed by Ms. Devan K. Flahive on behalf of American Transmission Systems Incorporated. | 8 |
| 11/12/2021 | Letter of Notification Application for the Delta-Wauseon 138 kV Transmission Line Tap to Winameg Area Substation Project electronically filed by Ms. Devan K. Flahive on behalf of American Transmission Systems Incorporated. | 64 |
| 11/04/2021 | In the Matter of American Transmission Systems, Incorporated's Pre-Application Notification Letter electronically filed by Ms. Devan K. Flahive on behalf of American Transmission Systems, Incorporated. | 2 |