My GUESS is about 30,000 gallons.
Only in California.........pipe “ruptures” at 12:15 AM (note time).same pipe has been running for years without a problem. Suddenly in a big time liberal area, said pipe “ruptures” on its own right where it would/could do the most damage and get the most attention.
IMO, that was NO ACCIDENT.
Note, the use of gallons, not barrels.
If it is heavy crude, just spread it over the road like tar and fill in the pot holes.