Tres Palacios Gas Storage LLC submits tariff filing per 154.203: Tres Palacios Gas Storage LLC - Order No. 587-V Compliance Filing to be effective 12/1/2012 under RP12-1068 Filing Type : 580

1.0 General Project Description Resource Report 1 General Project Description FERC Environmental Checklist Part 380-Appendix A Minimum Filing Company Compliance or Requirements for Environmental Reports Inapplicability of Requirement Provide a detailed description and location map of the Sections 1.1 and 1.1.2; Figure 1.2-1 Project facilities. (380.12(c)(1)) Describe any non-jurisdictional facilities that would be built Section 1.9; Figure 1.2-1 in association with the Project. (380.12(c) (2)) Provide current original U.S. Geological Survey (USGS) Appendix A 7.5-minute series topographic maps with mileposts showing the Project facilities. (380.12(c)(3)). Provide aerial images or photographs or alignment sheets Figure 1.2-1 and Appendix C based on these sources with mileposts showing the Project facilities. (380.12(c)(3)). Provide plot/site plans of compressor stations showing the Appendix B location of the nearest noise-sensitive areas (NSA) within 1 mile. (380.12(c)(3,4)). Describe construction and restoration methods. Section 1.4, Appendix E and Resource (380.12(c)(6)). Report 2 Identify the permits required for construction across surface Section 1.6.1 and Table 1.5-1 waters. (380.12(c)(9)). Provide the names and addresses of all affected landowners Appendix F and certify that all affected landowners would be notified as required in 157.6(d). (380.12(a)(4) and (c)(10)). Final 1-ii FERC Section 7c Application February 2013 Contents Section Page 1.0 Resource Report 1 - General Project Description ........................................................... 1-1 1.1 Purpose and Need ............................................................................................... 1-2 1.2 Location and Description of Facilities ............................................................... 1-2 1.2.1 Pipeline Facilities................................................................................ 1-3 1.2.2 Aboveground Facilities....................................................................... 1-9 1.2.3 Associated Facilities ......................................................................... 1-11 1.2.4 Bi-Directional Flow Modifications................................................... 1-11 1.2.5 Location Maps, Detailed Site Maps, and Plot and Site Maps........... 1-15 1.3 Land Requirements........................................................................................... 1-15 1.3.1 Pipeline Facilities.............................................................................. 1-15 1.3.2 Aboveground Facilities..................................................................... 1-29 1.3.3 Bi-Directional Flow Modifications................................................... 1-30 1.4 Cumulative Impacts.......................................................................................... 1-30 1.5 Construction and Restoration ........................................................................... 1-33 1.5.1 Standard Construction Methods ........