Results are expected Friday of tests of water taken from the San Francisco Bay where a sewage spill occurred Tuesday.
An estimated 500,000 gallons of partially treated sewage flowed through a hole in a 24-inch diameter pipe at the Sausalito-Marin City Sanitary District facility in Fort Baker between 1 p.m. Tuesday and Wednesday afternoon, when the interim repair was complete, district director Bob Simmons said.
The pipe continues to leak about a half-gallon of partially treated wastewater a minute and repairs are expected to be completed Friday, according to Simmons.
The section of the pipe containing the 2.5-inch hole will be plugged then encased in about 120 cubic feet of re-enforced concrete, Simmons said. The Maggiora-Ghilotti company of San Rafael is doing the work.
Work has to be done during about a four-hour time period when the tide is low and the pipe is accessible at the spill site, Simmons said.
Matt Bronson, of the Marin County Administrator's Office, said water samples were taken from two areas near the spill. There must be two consecutive days of clean water results before advisories that warn about entering the water for fishing and recreation are lifted, Bronson said.
People also have been warned not to eat seafood from the area of the spill.