View or download the DEA.

Westchester County announces that the FAA has approved the extension of the public comment period for the Draft Environmental Assessment (DEA) for the Million Air Redevelopment / Development project at the Westchester County Airport (HPN). The DEA has been prepared in accordance with the Federal National Environmental Policy Act (NEPA) of 1969, as amended, Federal Aviation Administration (FAA) Order 1050.1F, and FAA Order 5050.4B. The purpose of the project is to provide general aviation (GA) hangar and FBO terminal space for existing Airport users and Million Air customers while also accommodating existing light general aviation (LGA) needs. The DEA evaluates the environmental, social, and economic consequences of the proposed Million Air Redevelopment / Development project.

The DEA covers two projects referred to as Phase I and Phase II in the DEA. Phase I included the construction of a 50,400 Sf hangar and a 17,150 Fixed Based Operator (“FBO”) terminal building with associated parking, sidewalk and landscaped areas. Phase I was an improvement approved in the 2016 lease entered into by the Astorino administration between the County of Westchester and White Plains Aviation Partners, LLC doing business as Million Air White Plains, an FBO at the airport. Phase I was not complete until 2021 when Million Air was required to construct the stormwater management improvements for Phase I by the Latimer administration.

Phase II would involve the proposed future construction of a 78,344 hangar that was not approved in the 2016 lease between the County and Million Air. Additional stormwater improvements are required if Phase II were to proceed. The DEA does not constitute County approval of Phase II.

Environmental impacts of both Phase I and Phase II are evaluated together in the DEA. 

Document Availability:

The DEA is available for review / download online at the Westchester County Airport Website and under the Westchester County Press Releases. Hard copies are available for review during regular business hours at the following locations:

  1. Purchase Free Library - 3093 Purchase St, Purchase, NY 10577
  2. West Harrison Branch Library - 2 Madison St, West Harrison, NY 10604
  3. White Plains Public Library - 100 Martine Ave., White Plains, NY 10601
  4. North White Plains Library - 10 Clove Rd, White Plains, NY 10603
  5. Port Chester-Rye Brook Public Library - 1 Haseco Ave, Port Chester, NY 10573
  6. Mount Pleasant Public Library - 350 Bedford Rd, Pleasantville, NY 10570
  7. North Castle Public Library - 19 Whippoorwill Rd E, Armonk, NY 10504
  8. Chappaqua Library - 195 S Greeley Ave, Chappaqua, NY 10514

Public Comments:

The public comment period has been extended through May 3, 2023. All written comments must be submitted by 4:30 p.m. on May 3, 2023. Please send any comments that you have on the DEA to the following:

Christen Craig

C&S Engineers, Inc.

499 Col. Eileen Collins Blvd.

Syracuse, NY 13212

Or by email at: