Westside mud

Mud, trees and debris flow caused a landslide that closed both lanes of Sepulveda Blvd. just North of Montana Ave in West Los Angeles Thursday morning.  (Al Seib / Los Angeles Times)

Utility workers inspect a pile of trees, dirt and a block fence that crashed onto Sepulveda Boulevard in West Los Angeles in a landslide that closed the busy street during rush hour Thursday, March 6, 2008. The hillside collapse near the University of California, Los Angeles, damaged a power pole, right, knocking out power in the area at about 7 a.m.  (Reed Saxon / Associated Press)

Michael Finger (right) and Searcy Jackson (left) with L.A. City Fire Department Urban Search and Rescue mark the perimeter of a landslide that has closed both lanes of Sepulveda Blvd. just North of Montana Ave in West Los Angeles Thursday morning. The men are marking the perimeter to check the slide’s current position and 10 feet out to see if there is any future movement before equipment can be brought in to secure the slide and clean up.  (Al Seib / Los Angeles Times)

Los Angeles Fire Department Battalion Chief Patrick Butler, at left in white B-9 helmet, briefs police, fire and city workers after a pile of trees, dirt and a block fence, right rear, crashed onto Sepulveda Boulevard in West Los Angeles in a landslide that closed the busy street during rush hour Thursday, March 6, 2008. The hillside collapse near the University of California, Los Angeles, damaged a power pole, knocking out power in the area at about 7 a.m.  (Reed Saxon / Associated Press)