AMEREN ILLINOIS COMPANY

Incident Narrative

AN 8"" GAS TRANSMISSION MAIN SERVING DISTRIBUTION CUSTOMERS IN AND AROUND THE VICINITY OF EDWARDSVILLE, IL WAS DAMAGED BY A THIRD PARTY EXCAVATOR. THE EXCAVATOR MIKE MAEDGE TRUCKING, AN EARTHMOVING CONTRACTOR, WAS USING A JOHN DEERE 750J CRAWLER DOZER TO IMPROVE A HAUL ROAD FOR THE RICHARDS BRICK COMPANY. THE EXCAVATOR DID NOT REQUEST A DIG TICKET FROM JULIE, THE ONE CALL AGENCY IN ILLINOIS. THE EXCAVATOR REMOVED APPROXIMATELY 2 TO 3 FEET OF COVER, CREATING A GOUGE IN THE PIPELINE APPROXIMATELY 6"" LONG BY 2"" CIRCUMFERENTIALLY. THE LOCATION OF THE DAMAGE WAS IN A WOODED AREA ON AND ADJACENT TO THE RICHARDS BRICK COMPANY PROPERTY. GAS ESCAPED TO ATMOSPHERE AND DID NOT IGNITE. AMEREN ILLINOIS GAS CONTROL RECEIVED LOW PRESSURE ALARMS TO NEARBY REGULATOR STATIONS BEING FED FROM THIS 8"" MAIN AND DISPATCHED GAS REGULATOR TECHNICIANS TO THESE LOCATIONS. ADDITIONAL GAS FIELD PERSONNEL WERE DISPATCHED AND CONFIRMED THE PIPELINE HIT HAD OCCURRED. AMEREN ILLINOIS SAFELY ISOLATED AND REPAIRED THE DAMAGED PIPELINE SEGMENT, MINIMIZING THE SCOPE OF THE OUTAGE WHICH ULTIMATELY IMPACTED AROUND 30 CUSTOMERS. UPDATE 01/29/2016 FOR FINAL SUBMISSION: GPS DATA WAS VERIFIED COST INFORMATION WAS UPDATED BASED ON FINAL COST ESTIMATE WHICH IS SPLIT INTO EMERGENCY RESPONSE AND DAMAGE REPAIR. ADDITIONAL DETAIL ON OUTAGE - TOTAL NUMBER OF CUSTOMERS IMPACTED WERE 32. SERVICE RESTORATION BEGAN ON SATURDAY JULY 18 AT 7:00 AM AND WAS COMPLETED BY 12:00 NOON ON SATURDAY JULY 18, FOR ALL CUSTOMERS EXCEPT 4 WHO WERE NOT HOME TO ALLOW ACCESS FOR RELIGHTS AT THIS TIME. THE EXCAVATOR STATED THAT SINCE THEY WERE GRADING DIRT, THAT THIS WAS NOT EXCAVATING AND THEREFORE DID NOT BELIEVED THEY NEEDED TO CONTACT THE ONE CALL CENTER FOR LOCATES. UPDATE 02/29/2016 FOR FINAL SUBMISSION: INITIAL TIME THAT THE INCIDENT ACTUALLY OCCURRED WAS UPDATED TO 14:40 PM, IN PART A, #4.