EPA RCRA ID: DED000800284
The Resource Conservation and Recovery Act (RCRA) is the public law that creates the framework for the proper management of hazardous and non-hazardous solid waste. Corrective action is a requirement under RCRA that facilities that treat, store or dispose of hazardous wastes, or did so in the past, investigate and clean up hazardous releases into soil, groundwater, surface water and air. For more information, and for more information on RCRA-specific terms used on this page, please visit EPA’s umbrella RCRA web page or EPA’s RCRA Corrective Action page.
On this page:
- Cleanup Activities
- Facility Description
- Institutional/Engineering Controls
- Enforcement and Compliance
- Related Information and Publicly Available Electronic Records
- Contacts for this Facility
Cleanup Activities
In March 2006, a Delaware Department of Natural Resources and Environmental Control Corrective Action Permit was issued for the DuPont Edge Moor Plant. One of the permit requirements was to conduct a Resource Conservation and Recovery Act Facility Investigation for potential or suspected releases of hazardous waste or hazardous constituents at specified Solid Waste Management Units identified at the facility.
After issuing the draft Corrective Action Permit, DNREC scheduled a 45-day public comment period from July 31 through September 14, 2005, to allow the community an opportunity to review the draft permit.
DuPont prepared a Public Participation Plan, to outline its communications strategy with citizens and the Citizen Advisory Panel. The Edge Moor Site team meets with the CAP periodically.
A Phase I Facility Investigation was completed in 2008 and a Phase II RFI was completed in 2011. The purpose and objectives of the Phase I and Phase II investigations were to:
DNREC approved the Phase I RFI Report in September 2009, and the Phase II RFI Report was approved in November 2011. There were a total of 29 SWMUs investigated during the Phase I and Phase II RFI; twelve of these SWMUs and the site wide groundwater require no further investigation and will be addressed under a Risk Analysis Report and Corrective Measures Study. The Risk Analysis Report is currently being drafted by DuPont. This analysis would evaluate a remedial response as part of a subsequent Corrective Measures Study if necessary.
DuPont submitted the Risk Analysis Report for human health and ecological risk for the site in October of 2013. DNREC is currently subcontracting a review of this report to a third party. A Corrective Measures Study will be conducted, pending the report review and will include:
- Evaluate the nature and extent of potential or suspected releases from the identified SWMUs
- Screen un-impacted SWMUs from further investigation
- Address data gaps identified during the Phase I RFI
- Investigate newly identified SWMUs that had not been previously assessed
- Refine the understanding of site-wide groundwater conditions
- Develop a Site Conceptual Model with a comprehensive exposure pathway analysis to evaluate any potential impacts to human health and the environment
- Provide sufficient additional data to conclude the RFI process such that corrective action at the Site can proceed to the Corrective Measures Study phase
- Determine whether interim/stabilization measures were necessary
Cleanup Actions or environmental indicators characterizing the entire facility are shown below. This listing, and all the data on this page, come from EPA’s RCRAInfo and are refreshed nightly to this page. For this table, a blank in the Status column could mean the action either has not occurred or has not been reported in RCRAInfo.
Cleanup Activities Pertaining to the Entire Facility
| Action | Status | Date of Action |
|---|---|---|
| Human Exposure Under Control Human Exposure Under Control(CA725) | ||
| Groundwater Migration Under ControlGroundwater Migration Under Control (CA750) | ||
| Remedy DecisionRemedy Decision (CA400) | ||
| Remedy ConstructionRemedy Construction (CA550) | ||
| Ready for Anticipated Use Ready for Anticipated Use (CA800) | ||
| Performance Standards AttainedPerformance Standards Attained (CA900) | ||
| Corrective Action Process TerminatedCorrective Action Process Terminated (CA999) |
For definitions of the terms used, hover over or click on the term.
Cleanup Activities Pertaining to a Portion of the Facility
| Action | Area Name | Date of Action |
|---|
For definitions of the terms used, hover over or click on the term.
Facility Description
Link to a larger, interactive view of the map.
The DuPont Edge Moor facility (site) is an approximately 115-acre pigment manufacturing facility located in Edgemoor, Delaware, just east of the city of Wilmington, Delaware. The facility operates one titanium dioxide (TiO2) production line, which is used for the paper and paint industry. The site also produces titanium tetrachloride (TiCl4) and ferric chloride.
The pigment is produced by processing naturally occurring ilmenite ore to separate TiO2 from other metal oxides. The TiO2 is then treated to impart different desired properties.
The site was historically a residence and farm from 1682 until the early 1930s. At that time, it was purchased by Krebs Company to produce TiO2. In 1935, DuPont purchased the site and continued to produce TiO2.
Resource Conservation and Recovery Act Corrective Action activities at this facility are being conducted under the direction of the Delaware Department of Natural Resources and Environmental Control with assistance from EPA Region 3.
Institutional and Engineering Controls at this Facility
No institutional controls are currently in place.
Institutional and Engineering Controls help ensure human exposure and groundwater migration are under control at a cleanup facility. Where control types have been reported by states and EPA in EPA’s RCRAInfo, they are shown below. Not all control types are needed at all facilities, and some facilities do not require any controls. Where there are blanks, the control types may not be needed, may not be in place, or may not be reported in RCRAInfo.
Are Controls in Place at this Facility?
|
Control(s) Type |
Control(s) in Place? |
Areas Subject to Control(s) |
|
|---|---|---|---|
|
Institutional ControlsNon-engineering controls used to restrict land use or land access in order to protect people and the environment from exposure to hazardous substances remaining in the site/or facility. (CA 772) |
Informational DevicesInformational Devices (ID) |
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Governmental Controls (GC) |
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Enforcement and Permit Tools (EP) |
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| Proprietary ControlsProprietary Controls (PR) | |||
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Engineering ControlsEngineering measures designed to minimize the potential for human exposure to contamination by either limiting direct contact with contaminated areas or controlling migration of contaminants. (CA 770) |
Groundwater ControlGroundwater Control (GW) |
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Non-Groundwater |
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For definitions of the terms used, hover over or click on the term.
Enforcement and Compliance at this Facility
EPA’s Office of Enforcement and Compliance Assurance (OECA) provides detailed historical information about enforcement and compliance activities at each RCRA Corrective Action Site in their Enforcement and Compliance Historical Online (ECHO) system.
RCRA Enforcement and Compliance Reports from ECHO
Related Information and Publicly Available Electronic Records
For more information about this facility, see these other EPA links:
- RCRA information in EPA’s Envirofacts database
- Information about this facility submitted to EPA under different environmental programs as reported in EPA’s Facility Registry Services
- Alternative Names for this facility as reported by EPA programs in EPA’s Facility Registry Services
- Cleanups in My Community provides an interactive map to see EPA cleanups in context with additional data, and lists for downloading data
- Search RCRA Corrective Action Sites provides a search feature for Corrective Action Sites
Documents, Photos and Graphics
Contacts for this Facility
EPA Region implements and enforces the RCRA Corrective Action program for and federally recognized tribes.
For further information on this corrective action site, use the Contact Information for Corrective Action Hazardous Waste Clean Ups listings that are accessible through Corrective Action Programs around the Nation.