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Site Type: Site Awaiting NPL Decision (SAND) 
DARIEN LANDFILL
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map of site |
| DARIEN, Connecticut |
| FAIRFIELD County |
| Street Address: | LEDGE ROAD
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| Zip Code: | 06820 |
Congressional
District(s): |
04 |
| EPA ID #: | CTD982543498 |
| Site ID #: | 0101631 |
| Site Alias: | |
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Description
The Darien Landfill (DL) property is located along Ledge Road in the Town of Darien, Fairfield County, Connecticut. The 9.1-acre property is currently owned by the Town of Darien, and consists of 4.5 acres of landfill, a transfer station, a Town of Darien Fire Department training area, a cellular tower, a waste oil tank, an oil/water separator, the Town of Darien Department of Public Works (DPW) garage, and the foundation of a former incinerator. In addition, the Town of Darien operates a leaf composting and household recycling center at the property. Approximately 5,000-square feet (ft2) of asphalt paving surrounds the transfer station; approximately 20,000 ft2 of paving surrounds the Fire Department training area. The property is bordered to the north by Penn Central/Amtrak railroad tracks; to the east by a Howard Johnson Motel and a Saab automobile dealership; to the south by Ledge Road and Interstate 95; and to the west by Stony Brook and the Stony Brook Park.
Ownership history prior to 1940 is unknown; however, aerial photographs indicate the land was undeveloped prior to 1926. In 1940, the Town of Darien acquired the property. DL operated as a municipal solid waste disposal area from the 1940s to 1977. In 1942, an incinerator was built and operated 8 to 10 hours per day, producing an estimated 220 tons of ash per month. Ash quench, conveyor overflow, sifting sluice, and fly ash were flushed into a concrete settling basin located adjacent to Cummings Brook. In 1972, an inspection by the Connecticut Department of Environmental Protection (CT DEP) documented the unpermitted disposal of incinerator ash as well as daily flushing of the incinerator into the settling basin and Cummings Brook. Analytical results of fly ash samples collected from the Stamford, Connecticut incinerator in 1971 indicated the presence of copper, lead, and zinc. Fly ash of similar composition may have been disposed of at the property. Other hazardous waste materials that may have been disposed at the property include waste oil, laboratory chemicals, paint, pesticides, solvents, caulking compound, and laboratory chemicals. Four fuel oil underground storage tanks (USTs) are located on site. Since 1977, the Connecticut Resources Recovery Authority (CRRA) has managed and operated a solid waste transfer station on the property. The property also contains a recreational vehicle sewage dump station, located adjacent to the transfer station, and an oil/water separator, located north of the DPW garage, which discharge to the municipal sanitary sewer system. Waste oil is collected in an aboveground tank, located in the southern portion of the property. Previous investigations at the property include a Preliminary Assessment (PA) completed in 1988.
Groundwater occurs in overburden at a depth of approximately 35 to 45 feet (ft), and groundwater flow is to the south. The estimated population served by public and private groundwater drinking water supply wells within 4-radial miles of the property is 2,494 and 5,903, respectively. The nearest public drinking water supply wells are located approximately 2.1 miles west of the property. The nearest private drinking water supply well is located approximately 0.75 mile north of the property. Due to a lack of groundwater targets, no prior groundwater sampling is known to have been conducted at the property. As a result, impacts to nearby groundwater drinking water supply wells are unknown.
Overland flow from the property discharges primarily to Cummings Brook, a Clean Water Act (CWA)-protected water body. Cummings Brook flows southwesterly along the east property boundary, and Stony Brook flows southerly along the western edge of the property. Surface water bodies located along the 15-mile downstream surface water pathway include Cummings Brook, Stony Brook, Gorhams Pond, Darien River, and Long Island Sound. There are no known drinking water intakes located along the 15-mile downstream surface water pathway. A National Estuary Program (NEP)-protected bay, three State-threatened species habitats, a fishery, and 28.5 miles of wetland frontage are located along the 15-mile downstream surface water pathway. Analytical results of sediment samples collected from the on-site wetlands and Cummings Brook in 1994 indicated the presence of four pesticides and manganese. As a result, impacts to wetlands, a CWA-protected water body, and a fishery have been documented.
SAND Fact Sheet Last Updated on: 29 May 2001
Five to seven employees work on the property. Approximately 5,197 people reside within 1-radial mile of the property. The nearest residences are located within 150 ft of the property. There are 1.5 acres of wetlands located on the property. No known schools or day-care facilities are located within 200 ft of the property. Access to the property is restricted by an 8-foot chain-link fence along the southern and eastern property boundaries. The remainder of the property is surrounded by woodlands and railroad tracks which restrict vehicular traffic, but not pedestrian traffic. A gate house is located at the Ledge Road entrance which ensures that the property is accessed by permit holders only. Analytical results of surface soil samples collected from the property in 1994 indicated the presence of volatile organic compounds (VOCs), semivolatile organic compounds (SVOCs), pesticides, polychlorinated biphenyls (PCBs), and metals. Based on site observations and conditions, proximity to nearby residential populations, and access restrictions, potential impacts to nearby residential populations are unknown.
An estimated 128,024 people reside within 4-radial miles of the property. NEP-protected water bodies, CWA-protected water bodies, 500 acres of wetlands, and an unknown number of Federal/State-threatened or endangered species habitats 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 residential populations or sensitive environments are known or suspected.
SAND Fact Sheet Last Updated on: 29 May 2001
The last known action at the Darien Landfill property was a Site Inspection (SI) completed in 1994.
Current Status
Photos
Links to Other Information
Public Record Locations
EPA New England Records Center, One Congress Street, Boston, MA 02114 (617) 918-1440
Contacts
| Gerardo Millán-Ramos |
| Site Assessment Manager |
| Address: | One Congress Street, Suite 1100 (HBS)
Boston, MA 02114-2023 |
| Phone #: | 617-918-1377 |
| E-Mail Address: | millan-ramos.gerardo@epa.gov |
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