Golden Triangle Storage, Inc. Abbreviated Application for Certificate of Public Convenience and Necessity under CP11-531.

Golden Triangle Storage, Inc. Resource Report 6 Geological Resources GTS Expansion Project August, 2011 Table of Contents 6.0 RESOURCE REPORT 6 GEOLOGICAL RESOURCES ............................................................ 6-7 6.1 INTRODUCTION ...............................................................................................................................6-7 6.2 GEOLOGICAL SETTING ....................................................................................................................6-9 6.2.1 Subsurface Geology .........................................................................................................6-9 6.2.2 Aquifers ...........................................................................................................................6-9 6.3 BLASTING .......................................................................................................................................6-9 6.4 MINERAL RESOURCES...................................................................................................................6-10 6.4.1 Oil Production................................................................................................................6-10 6.4.2 Mining ...........................................................................................................................6-11 6.4.3 Other Gas Storage ..........................................................................................................6-11 6.5 GEOLOGICAL HAZARDS ................................................................................................................6-11 6.5.1 Avoidance and Minimization of Adverse Effects ..........................................................6-14 6.6 PALEONTOLOGY ...........................................................................................................................6-17 6.7 REFERENCES .................................................................................................................................6-17 List of Tables TABLE 6-1 NEAREST EXISTING AND PROPOSED SALT CAVERNS TO THE PROPOSED GTS STORAGE CAVERNS ....... 6-15 List of Appendices APPENDIX 6A - SIMULATION OF DEVELOPMENT OF 12.5-MMBBL CAVERN 3 (PRIVILEGED) APPENDIX 6B - SIMULATION OF DEVELOPMENT OF 10.0-MMBBLS CAVERN 4 (PRIVILEGED) APPENDIX 6C - LOCATION OF PROPOSED GTS CAVERNS ON SPINDLETOP SALT DOME AND RELATIVE TO EXISTING AND PROPOSED CAVERNS AND PLANES OF PREFERRED DISSOLUTION (PRIVILEGED) iii FERC Section 7(c) Application List of Abbreviations and Acronyms amsl above mean sea level ASTM American Society for Testing and Materials bbl barrel (42-gallon) Bcf billion cubic feet BEG Bureau of Economic Geology bgs below ground surface ESC/SWPP Erosion and Sediment Control and Storm Water Pollution Prevention FERC Federal Energy Regulatory Commission ESA Environmental Site Assessment GTS Golden Triangle Storage, Inc. InSAR Synthetic Aperture Radar interferometry ISRM International Society of