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Virtual Public Hearing: Proposed Plan of Remedial Action for the General Motors Corp. Wilmington Assembly Plant Operable Unit 4


Division of Waste and Hazardous Substances
Start Date: April 1, 2020
End Date: April 9, 2020

The Department of Natural Resources and Environmental Control (DNREC), Division of Waste and Hazardous Substances, will conduct a virtual public hearing (Docket #2020-R-WH-0008) on the Proposed Plan of Remedial Action for the General Motors Corp. Wilmington Assembly Plant Operable Unit 4 (DE-1149). The assembly plant is located in Wilmington, Delaware.

This hearing was originally noticed on March 8, 2020. It has been changed to a virtual hearing in response to the coronavirus (COVID-19) outbreak.

This virtual public hearing will be held on Thursday, April 9, 2020, beginning at 6:00 PM.

Virtual Meeting Information

To access the virtual hearing, go to de.gov/webex and enter the event code 350 462 960. To access the audio-only portion of the virtual hearing, dial 408-418-9388. If prompted for a password, please use PropPlanGMOU4.

Proposed Plan of Remedial Action

Soil at Operable Unit 4 (OU-4) was not impacted. OU-4 groundwater was impacted by ethylbenzene, 1,2,4-trimethylbenzene, xylene, and naphthalene.  Groundwater contamination migrated offsite to the northeast.  As the groundwater travels from the site, contamination reduces and does not impact any offsite drinking water wells.  Indoor air samples from Townhouses on Dodson Avenue do not indicate a risk from groundwater to indoor air.  The contamination at OU-4 will be addressed by groundwater monitoring, restricting OU-4 to commercial use, limiting groundwater use, and requiring soil/groundwater management plan during redevelopment.  

Details of the Proposed Plan are available online at www.nav.dnrec.delaware.gov/DEN3/.

For additional information on the Proposed Plan contact Rick Galloway, Project Manager, at 391 Lukens Drive, New Castle, DE, 19720, by telephone at (302) 395-2600, or by email at RS_Public_Comments@delaware.gov.

A list of proposed public hearing exhibits relating to this matter will be posted prior to the hearing on the DNREC Public Hearings site at de.gov/dnrechearings.

Please note that live comments will not be accepted during the virtual hearing. Written comment may be submitted to the Hearing Officer via the online comment form at dnrec.alpha.delaware.gov/public-hearings/comment-form/, via email to DNRECHearingComments@delaware.gov, or via USPS to the below address. The Department will accept public comment through the close of business on Friday, April 24, 2020. 

Lisa A. Vest, Hearing Officer
Office of the Secretary
Department of Natural Resources and Environmental Control
89 Kings Highway
Dover, DE 19901


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