Inspection teams on Dec. 8, 2025, were allowed inside the Clearwater tunnel for the first time and will begin with the first 3 miles of the underground structure that experienced a breach at about the 5-mile point under Western Avenue in San Pedro. Dec. 8, 2025. (Photo Courtesy of the Los Angeles County Sanitations Department)

Inspectors allowed into Clearwater tunnel for the first time on Dec. 8, 2025. (Photo Courtesy of Los Angeles County Sanitations Department)

Sonic drill rig on Western Avenue in San Pedro. The equipment is being used to explore a tunneling breach some 360 feet below ground that is being created to house new, larger wastewater pipes. (Photo Courtesy of Los Angeles County Sanitation Districts)

Sonic drilling rig used to explore underground tunnel breach on Western Av

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