PUGET SOUND ENERGY

Incident Narrative

ON FEBRUARY 1, 2017, A LEAK WAS IDENTIFIED NEAR THIS ADDRESS BY PSE'S LEAK SURVEY CONTRACTOR, AND THE LEAK WAS MONITORED IN ACCORDANCE WITH PSE STANDARDS. ON 3/7/17, PSE RESPONDED TO AN ODOR CALL 9130 15TH PL S, SEATTLE, AND EVACUATED TWO PEOPLE FROM ONE STRUCTURE AS A PRECAUTION. PSE VENTILATED THE AREA TO MAKE IT SAFE, AND SEARCHED FOR THE SOURCE OF GAS. SITE CONDITIONS INCLUDING HEAVY RAIN, SATURATED SOIL CONDITIONS, CLAY SOILS, WALL TO WALL PAVEMENT, AND A NEARBY STREAM MADE PINPOINTING THE LEAK SOURCE DIFFICULT. PSE AND CONTRACTOR PERSONNEL MONITORED THE LEAK INDICATIONS DAILY FOR SEVERAL WEEKS WHILE TRYING TO NARROW DOWN THE SOURCE OF THE GAS. IN MAY, SEVERAL SHUT-IN TESTS WERE PERFORMED AND THE LEAK LOCATION WAS NARROWED DOWN TO A 650 FOOT SECTION OF PIPING. PSE REPLACED THIS SECTION OF MAIN AND SERVICES AND THE LEAK WAS ELIMINATED. PSE FIRST RESPONSE COSTS ALONG WITH LEAK MONITORING COSTS AND PIPE REPLACEMENT CHARGES TOTALED OVER $50K. THIS EVENT WAS REPORTED AS A FEDERAL INCIDENT ON 6/12 AFTER DISCOVERING COSTS HAD ACCUMULATED PAST $50K. COST INFORMATION ESTIMATED GFR COSTS= $39,000 ESTIMATED IFS LEAK MONITORING COSTS $41,000 IFS MAIN REPLACEMENT WORK- PHASE 1 $132,000 IFS MAIN REPLACEMENT WORK- PHASE 2 $20,000 (FOR 130 FEET) GAS LOSS COST $400 .