Perils of Point Loma

by John Prendergast, Managing Editor; Civil Engineering Magazine, ASCE World Headquarters, 345 East 47th Street, New York City, NY.,


Serial Information: Civil Engineering—ASCE, 1992, Vol. 62, Issue 11, Pg. 62-65


Document Type: Feature article

Abstract: Rupture of the Point Loma sewage outfall in San Diego on Feb. 2, 1992, sent 180 mgd of primary-treated sewage coursing into shallow waters off the city's coastline. The article describes the fast-track emergency repair to the pipeline, including the assembly of the project team; damage assessment; laying of the replacement pipe using a device called a horse; design of a special telescoping closure piece that allowed completion of the pipeline repair within a three-hour plant shutdown window, after which the system carried the full flow from the treatment plant; and rock stabilization of the repaired pipeline. The article also describes a project to construct a 12,500 ft extension to the existing pipeline that is believed to be the deepest ever built for a municipal public works, scheduled to begin in November for a March 1994 completion.

Subject Headings: Waste treatment | California | Sewage | Outfall sewers | Failures | Fast track construction | Rehabilitation | Pipelines

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