| Date Filed | Summary | Pages |
| 03/27/2024 | Letter of Notification of construction completeness electronically filed by Mr. Lawrence B. Hughes on behalf of American Transmission Systems, Inc. | 2 |
| 09/11/2023 | Notice of Substitution of Counsel electronically filed by Ms. Devan K. Flahive on behalf of American Transmission Systems Incorporated. | 4 |
| 07/27/2023 | Service Notice / Staff Report | 2 |
| 07/27/2023 | Staff Report of Investigation electronically filed by Mr. Jess Stottsberry on behalf of Staff of OPSB. | 7 |
| 07/05/2023 | Response to Second Set of Data Requests electronically filed by Ms. Devan K. Flahive on behalf of American Transmission Systems Incorporated. | 4 |
| 05/30/2023 | Response to First Set of Data Requests from Staff electronically filed by Ms. Devan K. Flahive on behalf of AmericanTransmission Systems Incorporated. | 3 |
| 05/05/2023 | Construction Notice for the Longview- Ontario 138 kV Transmission Line Switch Replacement Project electronically filed by Ms. Devan K. Flahive on behalf of American Transmission Systems Incorporated. | 33 |
| 03/17/2023 | In the Matter of the Pre-Application Notification Letter for the Longview-Ontario 138kV Transmission Line Switch Project electronically filed by Ms. Devan K. Flahive on behalf of American Transmission Systems Incorporated. | 2 |