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County staff: Seal Cove landslide movement in Moss Beach has damaged utilities and prompted geologic assessment
Summary
San Mateo County planning staff reported May 14 that accelerated movement in a long-standing landslide zone at Seal Cove, Moss Beach has broken water lines, damaged sewer laterals and led to at least one red-tagged home; the county is contracting an updated geologic assessment and launching a public information website.
San Mateo County staff told the Planning Commission on May 14 that a portion of the deep-seated, slow-moving landslide in the Seal Cove area of Moss Beach has accelerated in recent months, damaging utilities and threatening homes.
Director Steve Monowitz said the movement has broken water lines, damaged sewer laterals and resulted in at least one home being red-tagged as unsafe. The county is working with the local water and sanitary district and the Department of Public Works to address infrastructure damage and is "in the process of solidifying a contract with a geologic assessment team to do an update to previous studies," Monowitz said. He also said the building department is working with impacted property owners on necessary precautions and repairs.
Monowitz told commissioners the county will consider whether updates to development regulations are needed in light of recent movement and that officials are launching a website to provide updated information to residents. He described the situation as "a developing situation" and pledged to keep the commission informed.
No formal action or vote was taken; the item was presented as part of the directors report. Staff did not provide a contractor name, a timeline for the geologic studys completion, or a specific schedule for repairs; those details were described as in progress.
