ROSEFIELD OPERATING COMPANY, LLC — Integrity Assurance Notification

INTERVALRosefield Operating Company, LLC ("Rosefield") took over as operator of the High Island Pipeline System (HIPS) on June 9, 2021, from Panther Operating Company, LLC (subsidiary of Third Coast Midstream, LLC) (the "Previous Operator"). Upon takeover of operatorship of HIPS, Rosefield discovered the Integrity Management Assessment for HIPS was not previously completed within the 5 year interval as required by 195.452(j)(3) (the "HIPS Assessment") which was due May 25, 2019.#