|
 |
|
|
|
Site Type: Site Awaiting NPL Decision (SAND) 
O'SULLIVAN'S ISLAND
 |
| DERBY, Connecticut |
| NEW HAVEN County |
| Street Address: | HOUSATONIC RIVER
|
| Zip Code: | 06428 |
Congressional
District(s): |
05 |
| EPA ID #: | CTD980667992 |
| Site ID #: | 0100249 |
| Site Alias: | |
|
|
Description
The O’Sullivan’s Island property is located on a peninsula at the confluence of the Housatonic and Naugatuck Rivers in Derby, Fairfield County, Connecticut. Local tax assessment information is unknown. The approximately 20-acre property is currently owned by the Town of Derby (Derby) and is directly south of the downtown commercial district of Derby, and near the commercial area of the towns of Shelton and Ansonia, Connecticut. The property consists of an approximately 2-acre estuary cove; an approximately 20,000 square foot pond located in a wetland; a mound of vegetated soil; the Valley Fire Training School building; an approximately 8 foot diameter pool containing oily brown liquid; and an approximately 5,000 gallon aboveground storage tank (AST) with unknown contents. The property is bordered by the Housatonic and Naugatuck Rivers to the west and east, respectively; the confluence of the two rivers to the south; and the Derby Sewer Department and Treatment Plant to the north. A section of U.S. Route 8 passes directly over the northern boundary of the property.
From 1948 to 1963, the property was owned by the State of Connecticut. Since 1963, the property has been owned by the Town of Derby. From approximately 1970 to 1983, the property was used by contractors to dredge cover material for the Derby Landfill located approximately 2 miles to the northeast. During dredging operations in 1983, a contractor unearthed rusting, 55-gallon drums, some of which were leaking an unknown substance. Subsequently, two Federally-funded emergency drum removal activities in 1983 and 1984/85 removed approximately 900 drums and 90 cubic yards of soil from the property.
The estimated population served by public groundwater wells within 4-radial miles of the property is 18,600. The nearest public drinking water supply wells are located approximately 1-mile northwest of the property. The estimated population served by private groundwater wells within 4-radial miles of the property is unknown. The nearest private drinking water supply well is located approximately 0.4 miles northeast of the property. No information was available regarding groundwater depth and flow direction at the property. No known groundwater samples have been collected from the property. As a result, no impacts to nearby groundwater drinking water supply sources are known or suspected.
Surface water drainage at the property has not been documented. Surface water bodies within 15-miles downstream of the property include the unnamed pond, the estuary cove, and the confluence of the Naugatuck and Housatonic Rivers. The Housatonic River then flows south from the property for approximately 12.5 stream miles before emptying into Long Island Sound. There are no drinking water intakes located along the 15-mile downstream surface water pathway. Sensitive environments downstream of the property include an unknown number of wetlands and Federal and State-listed endangered or threatened species habitats. No surface water or sediment samples are known to have been collected at the property. As a results, no impacts to nearby sensitive environments are known or suspected.
No employees work on the property. The nearest school is the fire training school located on the property. There are wetland sensitive environments located on the property. Access to the property is restricted by Naugatuck and Housatonic Rivers, Route 8 and railroad tracks. Analytical results of soil samples collected from soil mounds at the property in 1985 indicated the presence of barium, soluble phenol, and polychlorinated biphenyls (PCBs). In 1984, U.S. Environmental Protection Agency (EPA) in consultation with the Center for Disease Control (CDC), estimated that the PCB contaminated soil mounds did not pose an immediate health risk. Subsequently, the mounds were consolidated into a single mound of approximately 200 cubic yards and contained by a surrounding fence. Based on the site observations and conditions, and proximity to nearby residential areas, no impacts to nearby residential populations are known or suspected.
An estimated 62,716 people, and unknown number of wetlands and other sensitive environments occur within 4-radial miles of the property. No laboratory qualitative air samples are known to have been collected from the property. Based on available data, no impacts to nearby residential populations or sensitive environments are known or suspected.
The last known action at the O’Sullivan’s Island property was the Site Inspection Prioritization completed in 1992.
Current Status
Photos
Links to Other Information
Public Record Locations
OSRR Records and Information Center, 1st Floor, 5 Post Office Square, Suite 100 (HSC), Boston, MA 02109-3912 (617) 918-1440
Contacts
| Gerardo Millán-Ramos |
| Site Assessment Manager |
| Address: | One Congress Street, Suite 1100 (HBS)
Boston, MA 02114-2023 |
| Phone #: | 617-918-1436 |
| E-Mail Address: | millan-ramos.gerardo@epa.gov |
|