Coker's Sanitation Service Landfill
EPA ID: DED980704860
Cheswold, DE 19936
Congressional District: 1st
Other Names:Reichhold Chem Inc. #1, Coker's Landfill #1 & #2
Last Updated: December 2012
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On This Page
- Construction of the cleanup remedy for the Coker's Sanitation Service Landfills site was completed in September 1993.
- Groundwater, surface water and sediment were monitored regularly until late 1998 and results showed that the remedy is performing effectively.
- The third five-year review for the site was completed in May 2009, and confirmed that the remedy was effective.
- Instituional controls have been placed on the Landfills No. 1 and No.2
- EPA completed a final close-out report for the site in February 2009.
- EPA deleted this site from the National Priorities List in August 2011.
- The new five-year review is due in May 2014.
- The Coker's Sanitation Service Landfills site consists of two landfills that were used during the 1960s and early 1970s to dispose of waste from the manufacture of latex rubber.
- One landfill has an unknown number of unlined trenches. The second consists of 51 lined trenches, a leachate collection system for each trench, and a groundwater monitoring network.
An estimated 110,000 cubic yards of waste is buried in the landfills.
Styrene, a probable human carcinogen, and ethylbenzene are present in the waste material.
- The Columbia Aquifer discharges to the Willis Branch of the Leipsic River, which feeds Garrison's Lake, a recreational area.
NPL Listing History
|Deleted: 2011||Added: 1987|
- EPA selected a final remedy for this site in 1990, consisting of regrading the landfill surfaces, covering leachate seeps, fencing both landfills, and monitoring groundwater, surface water and sediment.
- The state of Delaware has developed a groundwater management zone to prevent the construction of wells in the vicinity of the site.
- Six potentially responsible parties, including McCrory Parent Corp., Rapid-American Corp., Nabisco Brands, Inc., Reichold Chemicals, Inc., and two property owners, signed a consent decree to carry out he remedy in 1992.
- Construction activities were completed in September 1993.
- Subsequent monitoring has shown no evidence that the waste material or associated contaminants are migrating to groundwater or surface water.
- Institutional Controls have been placed on the landfills to prevent direct contact with the buried waste.
- Waste material and soil contain volatile organic compounds (VOCs) associated with latex rubber, such as ethylbenzene and styrene. However, recent monitoring of groundwater underlying both landfills has not detected these VOCs or other contaminants of potential concern.
- In this case, the site does not present a risk to local residents who use groundwater for water supply.
- Also, while surface drainage from Landfill No. 1 flows through a wetland area on the Willis Branch of the Leipsic River, and Landfill No.2 is partially bordered by wetlands, neither surface water nor wetlands are adversely impacted by the site.
- 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 Coker's Sanitation Service Landfillsite, go to EPA’s Administrative Record Database.
- All documents and reports can also be reviewed in person at these locations:
Clayton Post Office
Clayton, DE 19938
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
- 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)
- Federal Register