Patrols continue at Reflecting Pool after liner damage and algae bloom

National Guard service members and U.S. Park Police patrolled the deck around the Lincoln Memorial Reflecting Pool on Monday. The patrols follow reports of damage to a new liner installed during a renovation project. The liner was part of work costing more than $14 million. Officials said the project aimed to clean and reinforce the pool before the nation's 250th anniversary celebration.

Recent developments Two days earlier, authorities said they had made multiple arrests related to damage at the site. Officials have not released details on charges or the total number of people detained. Contractors have used chemicals and ozone nanobubbles in recent days to address algae growth.

A piece of the liner about four feet square was seen floating in the water last Friday, and additional pieces were observed Monday.

Background and statements The pool has experienced algae problems for decades.

Officials said the new liner was intended to create a uniform appearance, but a bloom occurred within weeks of the work being declared complete. One man detained at the site told The Associated Press he reached into the water to examine the coating.

He said he was held for five hours before being released. The Park Police did not respond Monday to questions about the number of arrests or whether charges were filed. Washington's Metropolitan Police Department said it is not involved in the matter.