TOMHEGAN TOWNSHIP (AP) – A New York City couple who allegedly filled in wetlands to expand their private airstrip and build a quarry in northern Maine face a hefty fine from the federal government.

The Environmental Protection Agency says Robert and Gayle Greenhill, who own a $15 million seasonal home along Moosehead Lake’s western shore, could face a fine of up to $157,500 for allegedly violating wetland protections. The couple own 3,200 acres of property in Tomhegan Township.

The EPA says the development disturbed property containing “a mosaic of evergreen and deciduous forest which contained freshwater wetlands.”