E. I. DuPont De Nemours Site (Newport Landfill)
EPA ID: DED980555122
Newport, DE 19804
Congressional District: 1st
Last Updated: January 2013
The EPA is dedicated to providing you with timely and accurate information about our work at this site. If you have any questions or concerns, please contact:
On This Page
- EPA completed the second Five-Year Review for the DuPont site in March 2010, and the review found that the cleanup continues to be protective of human health and the environment.
- The Environmental Protection Agency (EPA) completed the cleanup of the DuPont site in September 2002.
- DuPont hosted a media event at the South Landfill that included presentations by EPA, DuPont, and Delaware’s Department of Natural Resources and Environmental Control (DNREC) to celebrate the 2002 completion.
- The operations, maintenance, and monitoring activities of the ground water recovery, wetlands, and river areas are ongoing.
- In March 2005 EPA completed the first Five-Year Review of the overall remedy of the DuPont site.
- The E.I DuPont, Newport site encompasses a pigment-manufacturing facility and two industrial landfills.
- The Christina River flows between the seven-acre North Landfill and the 15-acre South Landfill.
- From 1902 to 1929, Henrik Krebs built the plant and used it to manufacture a white zinc and barium-based pigment called Lithopone.
- In 1929, DuPont bought the plant.
- DuPont phased out Lithopone production and started making organic pigments, inorganic pigments, and other assorted products including chromium dioxide (a synthetic magnetic substance).
- As part of the plant’s operations, waste was disposed of in landfills which flowed into bordering wetlands and the Christina River.
- Wastes put in these landfills contained metals such as lead, cadmium, zinc, barium, mercury, and copper.
- Prior to Superfund laws, the State purchased a section of the South Landfill as part of a highway construction project.
- In 1984, Ciba-Geigy (now Ciba Specialty Chemicals) bought the pigment plant.
- DuPont retained the chromium dioxide manufacturing facility, which has since been shut down.
- There are public water supply wells within a three-mile radius of the site, however they have not been impacted by the site.
- The river that flows between the landfills is used for recreational purposes.
NPL Listing History
- In August 1993, the EPA issued a formal cleanup strategy known as the Record of Decision or ROD.
- In April 1994, under an EPA order (Unilateral Administrative Order), DuPont carried out the rest of the cleanup work.
- In 1994, as a result of a legal consent agreement with EPA, DuPont installed a steel wall using sheet piles along 700 feet of the Christina River. This barrier prevents oil from seeping out of the river bank.
- In 1995, several cubic yards of lead-contaminated soil were removed from an adjacent baseball field. The same year, DuPont installed a water line to nearby residents who were drinking from private wells.
- In 1997, the south river bank was covered with rocks, preventing further erosion into the South Landfill.
- In August 1997, work started to remove highly-contaminated sediments from the North Wetlands.
- Approximately 10,000 yards of wetland sediments were dug up and disposed of on-site in the North Landfill.
- The North Wetlands were replanted and restored.
- The EPA, Delaware’s Department of Natural Resources and Environmental Control (DNREC), and DuPont excavated more contaminated sediments than originally planned increasing the biodiversity of the area.
- In November 1999, DuPont finished dredging the Christina River.
- Dredged sediments were put in the South landfill (DuPont capped this area in 2002).
- Approximately 11,000 cubic yards of contaminated sediments were removed from the three areas.
- In May 2001, DuPont completed capping the North Landfill. To capture polluted groundwater from underneath the landfill and Ciba plant, DuPont also installed a groundwater capture system.
- Groundwater is being treated on-site before it is pumped to the Wilmington Treatment Plant.
- In May 2001, under an EPA Explanation of Significant Difference (ESD), an in-ground reactive wall (to treat groundwater), and a landfill cap were installed for the South Landfill.
- Constructed started in December of 2001 and ended in September 2002.
- Heavy metals and chlorinated solvents were detected in ground water.
- Lead, cadmium, zinc, barium, mercury, and copper were found underneath the Ciba plant, in river and wetland sediments.
- Contaminant descriptions and associated risk factors are available at: (ATSDR web site).
- To search an on-line database of all documents and reports on the E. I. DuPont De Nemours Site (Newport Landfill) site, go to EPA’s Administrative Record Database.
- All documents and reports can also be reviewed in person at these locations:
Contact Charles Silverman at 302-995-7663
Kirkwood Highway Library
6000 Kirkwood Highway
Wilmington, DE 19808
Newport Old Town Hall
15 North Augustine St.
Newport, DE 19804
U.S. EPA Region 3 NPL Public Docket
c/o U.S. EPA Region 3 Library
1650 Arch Street, 2nd floor (3PM52)
Philadelphia, PA 19103-2029
- Some of the site’s key documents of interest are accessible below.
Record of Decision
Community Relations Plan - June 1997 (PDF) (38 pp, 220KB)
- Submit a FOIA Request
Get instructions on how to submit a FOIA request. $Fee$ for requests over 100 pages.
- This is Superfund: A Community Guide to EPA's Superfund Program (PDF) (12 pp, 1.1MB)
- Tell us how to better engage with your community.
- Federal Register
11/06/2006: DEPARTMENT OF JUSTICE. Notice of Lodging of Consent Decree Under the Comprehensive Environmental Response, Compensation, and Liability Act and the Delaware Hazardous Substances Cleanup Act
10/12/2006: DEPARTMENT OF JUSTICE. Notice of Lodging of Consent Decree Under the Comprehensive Environmental Response, Compensation, and Liability Act and the Delaware Hazardous Substances Cleanup Act.
- Fact Sheet
- Public Notice