Proposed Plan of Remedial Action for Fort Dupont Operable Unit 4 [OU-4] Grassdale (DE-1618)

Division of Waste and Hazardous Substances

Published: May 30, 2021
Comments Due: June 21, 2021

The Department invites public comment on a proposal to clean-up Fort DuPont Operable Unit 4 (OU-4) Grassdale (DE-1618) located at 100 and 108 Reedy Point Road in Delaware City. OU-4 is the fourth of several areas within the over 300-acre Fort DuPont Facility intended to be investigated and redeveloped as part of a revitalization effort. The portion of the Fort Dupont Site identified as OU-4 was formally known as the ‘Grass Dale’ Center, or Grassdale, and was a former equestrian rehabilitation center. The State of Delaware acquired OU-4 in September 1994 and used the Site as a park and recreational activities.

Fort DuPont Facility OU-4 Grassdale will be subject to the following key remedial actions: the recording of an Environmental Covenant restricting groundwater withdrawal; and, the submittal of a Remedial Action Completion Report.

Details of the Amended Proposed Plan are available online at:

The comment period ends by 4:30 pm June 21, 2021. For additional information, please contact Morgan McGee-Solomon, Project Manager at (302) 395-2600 or via email at