SUNOCO PIPELINE L.P.

Incident Narrative

ON 3/25/20 AT APPROXIMATELY 14:24 THE COMPANY WAS NOTIFIED BY A 3RD PARTY OF A POTENTIAL CRUDE OIL RELEASE ON THE 8 INCH MCCLELLAN TO MERTEN PIPELINE NEAR PAMPA, TX. COMPANY OPERATIONS PERSONNEL WERE DISPATCHED AND ARRIVED ON SITE AT APPROXIMATELY 14:45 AND CONFIRMED THE RELEASE. THE CONTROL CENTER LOCATED IN HOUSTON, TX WAS IMMEDIATELY CONTACTED AND THE LINE WAS SHUTDOWN. UPSTREAM AND DOWNSTREAM VALVES WERE CLOSED TO ISOLATE THE SEGMENT. THE TX RRC WAS CONTACTED AT 15:01 AND INCIDENT NO. 2170 WAS ASSIGNED. REPAIR CREW ARRIVED AT APPROXIMATELY 23:00, EXCAVATED AND INSTALLED A REPAIR CLAMP. ALL FREE PRODUCT WAS PICKED UP AND CONTAMINATED SOIL WAS REMOVED. ON 3/26/20 AT APPROXIMATELY 10:04 THE PIPELINE WAS RESTARTED WHILE THE CLAMP WAS MONITORED. THERE IS EVIDENCE OF A PRIOR RELEASE FROM A 3RD PARTY FLOW LINE CONNECTED TO A WELL HEAD APPROXIMATELY 50 TO 100 FEET UPHILL FROM THE RELEASE SITE. THIS FLOW LINE IS NOT ASSOCIATED WITH THE MCLELLAN TO MERTEN SEGMENT AND IS OWNED AND OPERATED BY AN UNRELATED 3RD PARTY PRODUCER. THE PRIOR RELEASE FROM THE FLOW LINE CONTAMINATED THE SOIL WITH HIGH CHLORIDES AND OTHER POTENTIAL CONTAMINANTS WHICH RESULTED IN A LOCALIZED, HIGHLY CORROSIVE ENVIRONMENT. CATHODIC PROTECTION LEVELS IN THE AREA ARE IN COMPLIANCE WITH 195 REQUIREMENTS BUT WERE NOT SUFFICIENT TO MITIGATE THE CORROSIVE EFFECTS OF THIS ENVIRONMENT. A SUPPLEMENTAL CP SYSTEM INSTALLATION IS PLANNED TO BE INSTALLED IN 2020 IN THE AREA OF THE RELEASE SITE. AN ILI ASSESSMENT IS SCHEDULED FOR 2ND QUARTER 2020. THE REPAIR CLAMP WILL BE REMOVED AND THE FAILED SEGMENT OF PIPE PERMANENTLY REPAIRED IN CONJUNCTION WITH THE RESPONSE TO THE ILI ASSESSMENT.