PUBLIC SERVICE CO OF COLORADO

Incident Narrative

THIRD PARTY EXCAVATION WAS BEING PERFORMED ON APRIL 2ND, APRIL 4TH, AND APRIL 5TH IN THE AREA OF THE GAS SERVICE DAMAGE AT 1172 W. VIRGINIA AVE. THE GAS SERVICE WAS PULLED CAUSING THE LINE TO SEPARATE FROM THE MECHANICAL COUPLING. THE EXPLOSION OCCURRED ON THE ADJACENT PROPERTY AT 1160 W. VIRGINIA AVE. THE STRUCTURE OF 1160 W. VIRGINIA AVE IS APPROXIMATELY 10 FEET EAST OF THE GAS SERVICE SERVING 1172 W. VIRGINIA AVE. THE FIRE DEPARTMENT'S ORIGINAL NOTIFICATION TO THE OPERATOR WAS THAT A STRUCTURE FIRE HAD OCCURRED AT 1160 W. VIRGINIA AVE WITH NO GAS INVOLVEMENT. THE OPERATOR PERFORMED A BAR HOLE LEAK SURVEY AND DETERMINED THAT THERE WAS GAS PRESENT UNDERGROUND, PROMPTING FURTHER INVESTIGATION AND ULTIMATELY LEADING TO THE DISCOVERY OF THE THIRD PARTY DAMAGE. AS CLARIFICATION FOR SECTION A13 OF THIS REPORT, THE SERVICES AT 1160 W. VIRGINIA AVE AND 1172 W. VIRGINIA AVE WERE PERMANENTLY CUT-OFF FROM THE MAIN AND WILL NOT BE REACTIVATED WITHOUT A NEW APPLICATION FOR SERVICE. AS CLARIFICATION FOR SECTION A17.B OF THIS REPORT, THE FIRST GAS RESPONDER ARRIVED AT 03:30 AM ON 4/7/11 BUT WAS TOLD THAT THE INCIDENT WAS NOT GAS RELATED. THE INVESTIGATION REVEALED THAT THE EXACT DATE AND TIME OF THE DAMAGE TO THE GAS SERVICE AT 1172 W. VIRGINIA AVE COULD NOT BE DETERMINED, BUT THE DAMAGE WAS RECENTLY CAUSED BY A THIRD PARTY.