SOUTHLINE TRANSMISSION PROJECT You are invited to Southline Transmission Project's open houses Missed our November meetings? Join us for a new round of December open houses! Southline Transmission, L.L.C. is requesting an amendment to its 2017 Certificate of Environmental Compatibility (CEC no. 173) to expand Southline's construction approval to include the upgrade of approximately 60 miles of an existing Western Area Power Administration transmission line. Southline invites you to attend an in-person open house meeting to learn more about Southline, ask questions, and provide input while meeting with Southline representatives. Date: Monday, December 8, 2025 Time: 5:30 pm to 7:30 pm Location: Red Barn Event Center, 711 Madison St., Benson, AZ 85602 Date: Tuesday, December 9, 2025 Time: 5:30 pm to 7:30 pm Location: Willcox Community Center, 312 W. Stewart St., Willcox, AZ 85643 Date: Wednesday, December 10, 2025 Time: 5:30 pm to 7:30 pm Location: Pima County Fairgrounds: The Palo Verde Room, 11300 S. Houghton Rd., Tucson, AZ 85747 Questions and comments can be submitted to: connect@southlinetransmission.com (520) 485-5764 Southline CEC 343 W. Franklin Street Tucson, AZ 85701 www.southlinetransmission.com SOUTHLINE TRANSMISSION PROJECT You are invited to Southline Transmission Project's open houses Missed our November meetings ? Join us for a new round of December open houses ! Southline Transmission , L.L.C. is requesting an amendment to its 2017 Certificate of Environmental Compatibility ( CEC no . 173 ) to expand Southline's construction approval to include the upgrade of approximately 60 miles of an existing Western Area Power Administration transmission line . Southline invites you to attend an in - person open house meeting to learn more about Southline , ask questions , and provide input while meeting with Southline representatives . Date : Monday , December 8 , 2025 Time : 5:30 pm to 7:30 pm Location : Red Barn Event Center , 711 Madison St. , Benson , AZ 85602 Date : Tuesday , December 9 , 2025 Time : 5:30 pm to 7:30 pm Location : Willcox Community Center , 312 W. Stewart St. , Willcox , AZ 85643 Date : Wednesday , December 10 , 2025 Time : 5:30 pm to 7:30 pm Location : Pima County Fairgrounds : The Palo Verde Room , 11300 S. Houghton Rd . , Tucson , AZ 85747 Questions and comments can be submitted to : connect@southlinetransmission.com ( 520 ) 485-5764 Southline CEC 343 W. Franklin Street Tucson , AZ 85701 www.southlinetransmission.com