ENTERPRISE PRODUCTS OPERATING LLC

Incident Narrative

ON 3/21/2019 AT 14:10 CST IN ARLINGTON, NE AN ENTERPRISE PIPELINE TECHNICIAN OBSERVED BUBBLES IN THE WATER NEAR THE WEST BLUE LINE IN THE ELKHORN RIVER. ON 3/24/2019 AT 08:33 CST IT WAS DETERMINED THAT THE ENTERPRISE LINE WAS LEAKING. THE LEAK WAS ISOLATED AND A PLIDCO WAS INSTALLED TO PREVENT FURTHER LEAKING. THE PIPELINE WAS FLARED AND PURGED WITH NITROGEN UNTIL A PERMANENT SOLUTION WAS MADE. REPLACEMENT HDD RIVER CROSSING WAS INSTALLED AND TIED INTO THE MAINLINE ON 9/15/2019. THE LEAK OCCURRED ON AN EXPOSED PORTION OF THE PIPELINE DUE TO RIVERBED SCOURING FROM HEAVY RAINS. AFTER ALL NEW PIPE WAS INSTALLED AND TIE IN'S COMPLETED, THE INITIAL EXPOSED PIPE WAS COVERED WITHIN THE RIVER AND UNAVAILABLE FOR REMOVAL AND TESTING. VISUAL INSPECTION AND SUBJECT MATTER EXPERTS LEFT THE ACTUAL LEAK CAUSE AS UNDETERMINED. ON 3/24/2019 AT 09:34 CST AN INITIAL NRC CALL WAS MADE BASED ON THE ESTIMATION FOR THE REPAIRS TO EXCEED $50,000; NRC #1240896. ON 3/26/2019 AT 08:31 CST AN NRC 48 HOUR UPDATE CALL WAS MADE; NRC #1241083. ON 3/26/2019 AT 15:26 CST A SUPPLEMENTAL NRC CALL WAS MADE TO GIVE AN ESTIMATED VOLUME FOR THE LEAK; NRC #1241138.