ADVISORY: The U.S. Environmental Protection Agency (EPA) announced on Jan. 9, 2018 that it will list the Newark South Groundwater Plume site on the National Priorities List (NPL) in the Federal Register Jan. 18, 2018. The listing allows EPA to use Superfund authority and resources to work with DNREC to help resolve groundwater concerns in the project area and determine the sources of contamination there. More information is available on the Newark South Groundwater Plume Site.
ADVISORY: The EPA also announced on Jan. 9, 2018 that it will propose the Hockessin Groundwater Site for listing on the NPL in the Federal Register Jan. 18, 2018. The proposed listing will allow EPA to use Superfund authority and resources to work with the Department of Natural Resources and Environmental Control (DNREC) to help resolve groundwater concerns in the Hockessin area. Information is available on the Hockessin Groundwater Site.
ADVISORY: Artesian Water Company and the City of New Castle Municipal Services Commission detected perfluorooctanoic sulfonate (PFOS) and perfluorooctanoic acid (PFOA) in public water supply wells in the New Castle County Airport area that are above the U.S. EPA’s 2016 lifetime health advisory level of 0.07 parts per billion. The public drinking water is treated to remove the contaminants. More information is available at: PFAS Fact Sheet New Castle Public Supply Wells (includes PFOS/PFOA).
June 2016 Report on Economic Benefits of Brownfields: Economic Impact on Delaware’s Economy: The Brownfield Program 2015
Brownfields video featuring DNREC 's Site Investigation and Restoration Section (SIRS) Be sure to visit the Delaware Brownfields Marketplace!
The Division of Waste & Hazardous Substances
' Site Investigation and Restoration Section (SIRS) is responsible for the identification, evaluation and remediation of sites within the state of Delaware that had past releases of hazardous substances. The Section manages the hazardous substance release sites in Delaware in accordance with the Hazardous Substance Cleanup Act (HSCA). The SIRS Administrator is Tim Ratsep. He can be reached at 302-395-2600. The SIRS office address is 391 Lukens Drive, New Castle, DE 19720 (Map & Driving Directions).
- Delaware Groundwater Management Zones (GMZs): a GMZ is a delineated land area adjacent to and including a contaminated site where DNREC has determined that new drinking water wells must be restricted in order to protect public health and safety.
- U.S. Environmental Protection Agency (EPA) is continuing to clean up the Delaware Sand & Gravel Landfill Superfund Site located in New Castle County, Delaware. EPA issued a Record of Decision Amendment at the site in December 2017 to address the source material and groundwater contamination. The Record of Decision Amendment No. 2 and other site-related documents may be found here. Additional site information is available here.
- U.S. Environmental Protection Agency (EPA) has released an Engineering Evaluation/Cost Analysis (EE/CA) Report for a Removal Action to address contaminated soil and groundwater at the Millsboro TCE Superfund Site located in Millsboro, Sussex County, Delaware. For more information on the EE/CA and the site, please see EPA's fact sheet here.
- U.S. Environmental Protection Agency (EPA) continues its cleanup effort at the Standard Chlorine of Delaware Superfund Site, also known as the Metachem Site, located in New Castle County, Delaware. EPA has been cleaning up the site in four separate parts called "operable units" or OUs. In early 2016, the EPA announced a proposed Record of Decision (ROD) Amendment for addressing off-site contaminated soils at the site, referred to as Operable Unit 2 (OU-2). More information regarding the EPA's OU-2 Proposed Plan for the ROD Amendment is available here.
- All (A-Z List)…
Alphabetical list of links to other Division of Waste&Hazardous Substances topics.
Delaware enacted its Hazardous Substance Cleanup Act (HSCA) in 1990 to address sites potentially contaminated with hazardous substance releases in the state that would not be addressed under the federal superfund program. Three major programs are administered under HSCA. They are the Voluntary Cleanup Program (VCP), the Brownfields Program, and the HSCA Enforcement program. We also have a Prospective Purchaser Agreement Program and an Application for that program is available.
The Voluntary Cleanup Program (VCP) has been developed to assist the responsible parties to voluntarily clean up properties contaminated by the release of hazardous substances. The benefit of participating in the VCP is that it can eliminate the need for costly litigation.
In July of 1995, HSCA was amended to encourage voluntary cleanup of sites and in 2001, enabling legislation that introduced brownfields was enacted. On August 3, 2004 the Brownfields Development Act was signed to extend certain liability protection to developers of properties that DNREC certifies as Brownfields in an effort to encourage development. The Brownfield program allows developers and prospective purchasers who did not contribute to the contamination on their site to clean up their site and not be liable for pre-existing contamination.
DNREC has made funds available for eligible activities related to environmental remediation and investigation as detailed in the Hazardous Substance Cleanup Act Policy on Brownfields Grants. Brownfields are defined as abandoned, vacant, or underused real property where development or redevelopment may be hindered by the reasonably held belief that the property may be environmentally contaminated. A study was recently conducted by the University of Delaware to quantify the significant economic benefit of the brownfields program. You may read more about the study in a press release written about it, and will also find the the brownfields study online.
You may also want to visit the Delaware Brownfields Marketplace. The Marketplace is an interactive database that contains a list of market-ready brownfield sites available for redevelopment in Delaware. The inventory is designed to make it easier for potential buyers and developers to locate available brownfield properties. Brownfields property owners may also submit their properties for potential listing on the Marketplace.
The HSCA Enforcement program requires the responsible party to clean up sites contaminated with hazardous substances and allows DNREC to recover the costs from the responsible party in the event that DNREC must perform the cleanup. It also allows the use of the HSCA fund to cleanup sites where a viable responsible party is not identifiable.
SIRS conducts Natural Resource Damage Assessments and Restoration (NRDAR) with DNREC's Division of Fish & Wildlife, Division of Water, and various federal agencies including the National Oceanic and Atmospheric Administration (NOAA) and the U.S. Fish & Wildlife Service (USFWS) to restore habitat and recreation that was lost due to contamination.
SIRS assists EPA with oversight for CERCLA sites, including Preliminary Assessment/Site Inspection (PA/SI) and National Priorities List (NPL) sites. SIRS also provides oversight for active Department of Defense (DoD) sites and Formerly Used Defense Sites (FUDS).
SIRS Mission Statement
The mission of the Site Investigation and Restoration Section (SIRS) is to identify sites with releases of hazardous substances, prioritize them for cleanup based on the risk posed by these sites to public health, safety and the environment, and to promote the reuse of contaminated properties.