The State Department of Health approved the city's Department of Environmental Services removal of warning signs posted at Keehi Lagoon beginning Monday, May 20.
Signs have been posted since March 25 and April 5 after a state security guard noticed toilet tissue and the odor of sewage in the vicinity of the Nimitz Highway viaduct near Kakoi Street.
Crews conducted water sampling Feb. 15 through April 9, 2013 but could not verify the source.
A bypass was set up around the area in question. The pipe was flushed, cleaned and examined by a closed-circuit TV, but no crack was discovered. As a precaution, crews ordered materials to line the inside of the pipe.
Those materials are expected to arrive the second week of June. Once on island, it will take up to two weeks to complete the lining project.
ENV and DOH will conduct water sampling on a weekly basis at the canoe launch site beginning May 22 until the pipe is lined.