TEXAS GAS TRANSMISSION, LLC — Integrity Assurance Notification

ASSUMED TOUGHNESSThe OpIDs included in this Notification per the Operator: 19270, 31728, 31554, 39138, 39210, 39701, 40274 In accordance with §192.18 [1], Boardwalk Pipelines, LP (Boardwalk), on behalf of its subsidiaries, including but not limited to, Texas Gas Transmission, LLC (Texas Gas) and Gulf South Pipeline Company, LLC (Gulf South), is hereby notifying PHMSA of its intent to use other appropriate, accepted industry methods to determine fracture toughness values, in addition to or as alternatives to the Charpy v-notch (CVN) toughness testing prescribed in §192.607. Boardwalk intends to use other accepted industry test methods to determine fracture toughness values that will provide an equal, or improved, level of pipeline safety compared to the sole use of CVN toughness test values.#