The cost of monitoring bacteria at Crescent Beach in Glen Cove may run as high as $100,000, Mayor Reginald Spinello said.
The beach, which has been closed since 2009 because of bacterial contamination, must pass eight weeks of three-times-a-day water testing at four locations, and the city must do on-site evaluations of area sanitary systems to comply with state law before it can reopen, according to the Nassau County health department.
The city presented the findings of its Woodbury-based consultants, Dvirka and Bartilucci Consulting Engineers, at a public meeting last week.
Spinello said the two monitoring programs will cost roughly $60,000 and $20,000, and he expects there to be up to $20,000 in additional costs.
"I may have a cost of some of my people to do a little bit here and a little bit there, and that's why I'm adding that little extra fluff into it," Spinello said.
Erin Reilley, grant administrator for Glen Cove's Community Development Agency, said the monitoring would include surface water sampling along a creek that empties adjacent to the beach. Monitoring will include DNA testing to determine if the bacteria is human or animal and where it is coming from.
The long-term solution may be to build a sewer system in the area, which is home to many mansions and is served by septic systems. Spinello said a sewer system could cost from $7 million to $30 million.
Crescent Beach, at 2.5 acres, is Glen Cove's smallest. The city leases it from North Country Colony homeowners association. In 2004, the city leased the beach for 99 years in return for road maintenance. The previous lease had been for 10 years.
CORRECTION: The name of Erin Reilley was mispelled in previous versions of this story.