The open house at Kirtland Air Force Base will be Thursday, July 25. Experts from the Air Force and the state Environment Department will be on hand to answer questions.
A coalition of environmental groups has threatened to sue, saying the contamination is a danger to public health and the environment.
The Air Force already has spent $125 million cleaning up soil and water around the site, but the group is seeking an agreement that would establish a schedule with clear deadlines and penalties.
The fuel leak was detected in 1999. It was believed to have been seeping into the ground for decades.