Workers managed to cap the leak at around 1 a.m., but according to KRON 4 Morning News, the "nauseating" stench of gas remains in the air. "It smells like rotten eggs," said KRON's intrepid reporter.
No injuries were reported.
Regarding the project itself, Mercury News reports: "The Caltrain project is underway to elevate train tracks above three streets in San Bruno: San Bruno, San Mateo and Angus avenues. Caltrain is taking the tracks above street level to improve traffic and safety in the area, and hopes to finish the project next spring."