Josh, I recall looking for the specs for the generator station when we were putting the plans together and we were unable to find them. You are welcome to visit the site to determine the materials. Jerry Davis would be the best contact. His phone number is 972-661-1693. I have also copies him on this email. Thanks, Clay Barnett, P.E. Town Engineer Town of Addison 16801 Westgrove Drive Addison, TX 75001-2818 Office: (972) 450-2857