Notification of Public Comment for a Brownfield Development Agreement for the 400 S. Market Street Site, Wilmington (DE-1835)

Division of Waste and Hazardous Substances

Published: June 25, 2023
Comments Due: July 17, 2023

Pursuant to the Hazardous Substance Cleanup Act (HSCA), 7 Del. C. Chapter 91, §9126, the Department of Natural Resources and Environmental Control (DNREC) is required to issue a public notice within twenty days after entering into negotiations for a Brownfield Development Agreement (BDA). A BDA is an agreement between DNREC and a Brownfield developer with respect to a Certified Brownfield Site that sets forth a scope of work and schedule of remedial activities during the development of the Site.

DNREC’s Remediation Section (DNREC-RS) negotiated a BDA with the Riverfront Development Corporation of Delaware as a Brownfield Developer regarding the 400 S. Market Street (Site), located at 400 South Market Street, Wilmington, Delaware. Identified by New Castle County as tax parcel number 2605000017, the Site may have had a release of hazardous substances as a result of historical activities on site. For more information, please see DNREC’s navigator at:

The public comment period begins on Sunday, June 25, 2023, and will end at the close of business on Monday, July 17, 2023. Please submit written comments to the DNREC-RS Project Manager, John Costa, at DNREC-RS, 391 Lukens Drive, New Castle, DE 19720, or via e-mail to

A copy of the BDA is available by accessing the DNREC-RS’ site files database at

Learn more about this Site and other Certified Brownfield sites by accessing the web page at or by contacting the DNREC-RS Project Manager, John Costa at (302) 395-2600 or