February 21, 2017 To All Southern Natural Gas Shippers Re: Award of Firm Transportation Capacity in ROFR Open Season On January 25, 2017, Southern Natural Gas Company ("Southern") announced an open season to solicit bids for 9,726 dth/day of firm transportation capacity on Southern's south main system in Zone 3 that will become available effective September 1, 2017, subject to a right of first refusal (“ROFR”) by the current capacity holder. See Notice No. 700808 for details of the capacity that was posted. The open season concluded at 11:00 a.m. CCT on Wednesday, February 8, 2017. Southern did not receive bids for this capacity and the existing capacity holders elected not to retain the capacity after August 31, 2017. Therefore, this ROFR open season has concluded and no firm transportation capacity was awarded. The portion of the firm service agreements applicable to each package of capacity will terminate on August 31, 2017.