WEST SHORE PIPELINE CO

Incident Narrative

"AT 6:06 PM ON APRIL 12, 2011, A RELEASE WAS IDENTIFIED BY A THIRD PARTY CUSTOMER ON THE FX999A1 LINE IN GREEN BAY, WISCONSIN. THE LINE WAS ISOLATED AND EMERGENCY RESPONSE PROCEDURES WERE INITIATED. AN ESTIMATED 10 BARRELS OF GASOLINE WERE RELEASED THROUGH A PINHOLE LEAK. THE LINE HAS BEEN REPAIRED, TESTED, AND IS BACK IN SERVICE. AN INCIDENT INVESTIGATION IS UNDERWAY AND METALLURGICAL ANALYSIS ON THE FAILED PIPE IS ONGOING. ALL IMPACTED SOIL WAS REMOVED AND REMEDIATION IS ONGOING. UPDATE METALLURGICAL ANALYSIS INDICATED THE CAUSE OF THE LEAK WAS EXTERNAL PITTING CORROSION. THE CORROSION WAS LOCALIZED SUGGESTING IT WAS LIKELY ASSOCIATED WITH AN AREA OF DISBONDED COATING. REMEDIATION IS ONGOING ' HOWEVER CHARGES HAVE BEEN ESTIMATED TO COVER REMEDIATION CHARGES UNTIL THE CLOSE OF THE PROCESS CHAIN OF EVENTS: 10:25 WEST SHORE EMPLOYEES IN GREEN BAY WAS NOTIFIED BY US OIL OF GAS VAPOR IN A SANITARY SEWER IN THE AREA OF THE FOX RIVER STATION. 10:28 WEST SHORE EMPLOYEES IN GREEN BAY CONTACTED THE PIPELINE CONTROL CENTER AND NOTIFIED THEM ON THE POTENTIAL RELEASE. THE PIPELINE THAT SUPPLIES FOX RIVER WAS ALREADY SHUT DOWN AS PART OF NORMAL OPERATIONS. 10:32 WEST SHORE EMPLOYEES ARRIVED ONSITE. 10:34 WEST SHORE EMPLOYEES MET WITH US OIL, GREEN BAY CITY DEPARTMENT OF PUBLIC WORKS AND THE GREEN BAY FIRE DEPARTMENT. 11:00 GREEN BAY CITY DEPARTMENT OF PUBLIC WORKS ORDERED A CAMERA CREW TO SITE TO EXAMINE THE SEWER TO DETERMINE WHERE PRODUCT WAS ENTERING 11:21 OSRO ARRIVED ONSITE 12:15 CAMERA CREW DETERMINES THAT PRODUCT IS COMING FROM AN ABANDON SEWER LATERAL 12:21 WEST SHORE EMPLOYEES PLACES A ONE CALL TO PREPARE TO DIG 14:50 EXCAVATION CREW ARRIVES ON SITE. 15:50 DURING EXCAVATION CONTAMINATED SOIL WAS DETERMINED. 17:55 NRC WAS NOTIFIED 19:15 EXCAVATION ACTIVITIES WERE STOPPED FOR THE NIGHT. 4/13/2011 08:00 SHORING ONSITE AND EXCAVATION RESUMED 18:00 NIGHT SHIFT STARTS. EXCAVATION CONTINUES 4/14/2011 00:44 LEAK DETECTED 01:15 PHMSA ARRIVES ONSITE 02:00 LEAK CLAMP INSTALLED"