Overview
- Preliminary findings say a subcontractor from Mayo Asphalt Milling struck a PG&E service line during road work on Dec. 11.
- Alameda County Fire arrived within minutes, then left after a PG&E responder said assistance was not needed.
- PG&E squeezed off the damaged service line at about 8:18 a.m., then detected gas at ground level near 867 East Lewelling Blvd.
- Crews began excavating around 8:40 a.m., shut the gas main at 9:29 a.m., and the home exploded at 9:37 a.m., injuring three residents and three PG&E workers.
- Federal and state probes are active, with the NTSB citing planned scrutiny of physical evidence, safe excavation, and leak-response procedures that could take up to one to two years.