As much as 60,000 gallons of crude oil that escaped from a ruptured Mobil Oil Corp. pipeline posed a danger to fish and hundreds of ducks in the Los Angeles River and caused $1 million damage, officials said.

The 10-inch underground pipeline that ruptured early Saturday morning under busy Ventura Boulevard in the Encino area of the San Fernando Valley was repaired Sunday.Crews steam-cleaned the pavement along Ventura Boulevard and paved over a trench dug Saturday to repair the rupture, Mobil spokesman Jim Carbonetti said. He said the street, the Valley's busiest, would reopen at dawn Monday.