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1. Introduction
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1.1 Background
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Site Number: |
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Contract Number: |
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D.O. Number: |
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Action Memo Date: |
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Response Authority: |
CERCLA |
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Response Type: |
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Response Lead: |
EPA |
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Incident Category: |
Removal Assessment |
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NPL Status: |
Non NPL |
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Operable Unit: |
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Mobilization Date: |
11/10/2014 |
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Start Date: |
11/6/2014 |
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Demob Date: |
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Completion Date: |
6/30/2016 |
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CERCLIS ID: |
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RCRIS ID: |
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ERNS No.: |
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State Notification: |
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FPN#: |
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Reimbursable Account #: |
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1.1.1 Incident Category
1.1.2 Site Description
EPA and the Delaware Department of Natural Resources and Environmental Control (DNREC) are working together to identify drinking water wells in the area of the Dover Air Force Base to determine if they have been impacted by perfluorinated chemicals (PFCs), including perfluorooctane sulfonate (PFOS) and perfluorooctanoic acid (PFOA). EPA is also coordinating with the Delaware Division of Public Health (DPH), the Centers for Disease Control and Prevention (CDC)/Agency for Toxic Substances and Disease Registry (ATSDR) and the United States Air Force to ensure that public health is protected.
The Air Force collected groundwater, surface water and soil samples near known Aqueous Film Forming Foam (AFFF) releases on the Dover Air Force Base in Kent County, Delaware to determine whether PFCs were released into the environment. Results showed that PFC levels in surface water and groundwater exceeded EPA’s provisional health advisory levels (HALs). As a result, EPA asked Tidewater Utilities Inc. (Tidewater) to sample the on-base drinking water supply wells. PFCs were not detected in any of the on-base drinking water supply wells, nor were they detected in the nearest off-base public water supply well.
PFCs are a group of organic chemicals used in repellants for stains, water, oil, and grease. Commercial and consumer products containing or degrading to these compounds were first introduced in the 1950s. They have been used in a variety of products such as the fabric of upholstered furniture, carpets, nonstick cookware, floor wax, and in some food packaging. The source of the PFCs detected on Dover Air Force Base is the AFFF used for firefighting.
1.1.2.1 Location
The Site is located in Dover, Kent County, Delaware.
1.1.2.2 Description of Threat
EPA and DNREC are working together to identify drinking water wells in the area of the Dover Air Force Base to determine if they have been impacted by perfluorinated chemicals (PFCs), including perfluorooctane sulfonate (PFOS) and perfluorooctanoic acid (PFOA).
The assessment may include sampling of drinking water wells and ground water monitoring wells in the area to define the nature and extent of the contamination.
1.1.3 Preliminary Removal Assessment/Removal Site Inspection Results
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2. Current Activities
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2.1 Operations Section
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No information available at this time.
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2.2 Planning Section
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2.2.1 Anticipated Activities
The U.S. Air Force is conducting sampling of private drinking water wells in the area of the Dover Air Force Base to determine if they have been impacted by PFCs.
No further assessment the EPA Removal Program is anticipated at this time.
2.2.1.1 Planned Response Activities
2.2.1.2 Next Steps
2.2.2 Issues
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2.3 Logistics Section
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No information available at this time.
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2.4 Finance Section
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No information available at this time.
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2.5 Other Command Staff
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No information available at this time.
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3. Participating Entities
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3.1 Unified Command
3.2 Cooperating Agencies
Delaware Department of Natural Resources and Environmental Control (DNREC)
Delaware Division of Public Health (DPH)
Centers for Disease Control and Prevention (CDC)/Agency for Toxic Substances and Disease Registry (ATSDR)
United States Air Force
Tidewater Utilities Inc.
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4. Personnel On Site
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No information available at this time.
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5. Definition of Terms
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No information available at this time.
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6. Additional sources of information
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No information available at this time.
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7. Situational Reference Materials
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No information available at this time.
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