The owners of a sand mining operation in Bridgehampton have denied access to the Suffolk Health Department, which wants to test for water contamination on the site.

The Health Department found heavy metals and pesticides at Wainscott Sand and Gravel - commonly referred to as "Sand Land" - when it did surface water testing in May 2015.

According to attorney Brian Sexton, who represents residents in Bridgehampton, the company recently agreed to let the department in but then attempted to drain the surface water from the site. He says Wainscott Sand and Gravel then revoked access to the Health Department when it couldn't drain the testable water in time.

Environmentalists are concerned because the 50-acre sand mine processes mulch and construction debris, which has been known to cause groundwater contamination.

The Health Department would only tell News 12 Long Island that they have attorneys working on the case. Wainscott Sand and Gravel refused to comment on the situation.