SAN FRANCISCO (AP) -- Residents of six buildings on San Francisco's Treasure Island are being forced from their homes so the Navy can clean up toxic material buried in an old waste disposal site.

The San Francisco Chronicle reports about two dozen families will be moved out in stages, with the first group leaving in April and the last gone by July.

In a letter, the residents were informed they would likely be provided with new housing on the island during the cleanup of the dump site situated underneath the six townhomes.

The 400-acre island, located in San Francisco Bay, is the site of an old Navy base.

The affected residents of the targeted buildings will meet with Treasure Island officials Tuesday night to learn details of the relocation plan.