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

Division of Waste and Hazardous Substances

Published: June 16, 2021
Comments Due: July 6, 2021

The Department invited public comment on a proposal to conduct remedial actions at the Fort DuPont Operable Unit 4 (OU-4) Grassdale (DE-1618) located at 100 and 108 Reedy Point Road in Delaware City on May 30, 2021. The comment period concluded on June 21, 2021. Due to the Proposed Plan of Remedial Action not being uploaded to the DNREC website, DNREC-RS is extending the public comment period. DNREC is granting an extension of the comment period on the Proposed Plan of Remedial Action until July 6, 2021. The extended comment period will end at close of business (4:30 PM) on July 6, 2021.

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 Proposed Plan are available online at:

For additional information, please contact Morgan McGee-Solomon, Project Manager, at (302) 395-2600, or submit comments via email at