Transwestern Pipeline Company, LLC submits tariff filing per 154.203: Compliance with RP15-23-001 Order on Rehearing to be effective 4/1/2015 under RP15-23 Filing Type : 580

ROVER PIPELINE PROJECT Resource Report 1: Project Description APPENDIX 1A Supplemental Tables TABLE 1A-1 Locations Where Rover Pipelines Will Be Adjacent to Existing Rights-of-Way.................. 1 TABLE 1A-2 Locations of Pipelines and Aboveground Facilities............................................................... 7 TABLE 1A-3 Additional Temporary Workspace Requirements................................................................ 13 TABLE 1A-4 Permanent and Temporary Access Roads ............................................................................ 69 TABLE 1A-5 Contractor Storage Yards ..................................................................................................... 79 TABLE 1A-6 Hydrostatic Test Water Source and Discharge Locations.................................................... 80 TABLE 1A-7 Proposed Horizontal Directional Drill (HDD) Locations .................................................... 85 TABLE 1A-8 Road and Railroad Crossing Methods ................................................................................. 87 TABLE 1A-9 Permits and Approvals ....................................................................................................... 110 TABLE 1A-10 Proposed Minor Projects in the Vicinity of the Rover Pipeline Project........................... 113 TABLE 1A-11 Proposed Major Projects in the Vicinity of the Rover Pipeline Project ........................... 122 February 2015 ROVER PIPELINE PROJECT Resource Report 1: Project Description TABLE 1A-1 Locations Where Rover Pipelines Will Be Adjacent to Existing Rights-of-Way Approximate. Desired Length Pipeline Segment From MP To MP Offset Distance Overlap Operator Product Ownership (mi) (feet) (feet) Supply Laterals: Sherwood Lateral 0.10 0.17 0.1 0' 20' Unknown Pipeline Unknown Unknown 1.57 1.78 0.2 0' 20' Eureka Hunter Pipeline Gas Unknown 5.15 5.26 0.1 0' 20' Houston Exploration Co. Pipeline Unknown Unknown 6.25 6.42 0.2 0' 20' Dominion Pipeline Unknown Unknown 8.89 9.04 0.1 0' 20' Miss Utility of WV Pipeline Unknown Easement 14.28 14.47 0.2 0' 20' Console Energy Pipeline Unknown Unknown 16.90 17.10 0.2 0' 20' Texas Keystone Pipeline Unknown Unknown 17.61 17.93 0.3 0' 20' Texas Keystone Pipeline Natural Gas Unknown 20.38 20.74 0.4 0' 20' Unknown Pipeline Unknown Unknown 27.83 28.17 0.3 0' 20' Unknown Pipeline Unknown Unknown 28.90 28.95 0.1 0' 20' Unknown Pipeline Unknown Unknown 37.31 37.77 0.5 0' 20' Eureka Hunter Pipeline Gas Unknown 38.01 38.03 0.0 0' 20' Eureka Hunter Pipeline Gas Unknown CGT Lateral 0.90 2.20 1.3 0' 20' Summit Midstream Pipeline Natural Gas Unknown 2.71 4.00 1.3 0' 20' Summit Midstream Pipeline Natural Gas Unknown 4.18 4.24 0.1 0' 20' Summit Midstream Pipeline Natural Gas Unknown 4.74 5.04 0.3 0' 20' Summit Midstream Pipeline Natural Gas Unknown 5.04 5.25 0.2 0' 20' Dominion Pipeline Unknown Unknown 5.25 5.68 0.4 0' 20' Energy Transfer Pipeline Unknown Unknown Seneca Lateral 0.53 2.23 1.7 0' 20' Texas Eastern Pipeline Gas Unknown 2