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United States Environmental Protection Agency
Waste Site Cleanup & Reuse in New England
  Serving Connecticut, Maine, Massachusetts, New Hampshire, Rhode Island, Vermont & 9 Tribal Nations
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 Site Type: Long Term/National Priorities List (NPL) Click to see more about Site Type and how it is used?


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 Lyndonville,  Vermont
 Caledonia County
 Street Address: OFF RTE 114
 Zip Code: 05851

 EPA ID #: VTD980520118
 Site ID #: 0101477
 Site Aliases:

 Site Responsibility: Federal, Potentially Responsible Parties

 Proposed Date 06/24/1988
 Final Date 10/04/1989
  Deleted Date 09/29/1999

Site Description
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The Darling Hill site is an inactive dump that occupies approximately 3 1/2 acres at the top of a steep hill along Darling Hill Road in rural Lyndon. From 1952 to 1972, the Village of Lyndonville leased and operated the dump. The dump was used for the disposal of light industrial and municipal wastes. Ray O Parker and Son, Inc. of Lyndonville leased and operated the dump from 1972 to 1983 and purchased it in 1983. During this time, the dump was used mainly for the disposal of scrap wood, metal, demolition materials, and industrial wastes. The site continued operating until the 1980s; in 1989 it was closed. An estimated 92,000 gallons of liquid industrial wastes were dumped directly on the ground at the unlined site, as were 2,000 tons of liquid, semi-liquid, and solid industrial wastes including metal-plating rinse water, alkali degreasers, and organic solvents. The depth to groundwater below the dump is more than 100 feet. The village well field, serving 3,200 people, lies 1/2 mile to the southwest of the dump. An additional 460 people used private wells located within 3 miles of the site. Located about 300 feet west of the site, and down a steep hill, is the West Branch of the Passumpsic River, which meets the East Branch approximately 1/2 mile further south. The river is used for recreational fishing and boating.

Threats and Contaminants
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Metal plating rinse waters, alkali degreasers, and organic solvents were dumped on the ground at the site. However, the EPA has determined that the low levels of volatile organic compounds (VOCs), including trichlorethylene (TCE) and toluene in the groundwater and soil, do not pose a risk to public health or the environment because of the use of the carbon filtration system on the municipal water supply.

Cleanup Approach
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Response Action Status
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Initial Action The Darling Hill Dump was closed in 1989. In 1991, the potentially responsible parties, under EPA oversight, installed a carbon filtration system to ensure a safe municipal water supply.

Entire Site In 1992, following an investigation into the nature and extent of contamination at the site by the potentially responsible parties and a public comment period, EPA determined that, because of the success of the initial actions, no further actions were necessary at the site. The EPA concluded that the low levels of contaminant concentrations in the soil and groundwater do not pose a threat to human health or the environment.

Enforcement HighlightsTwo Consent Orders were signed in 1989 requiring the parties potentially responsible for the site contamination to perform an investigation and install a carbon filtration system at the municipal well field. The Consent Order to remove contaminants from the groundwater was terminated due to the low levels of contamination found during the site study. The Village of Lyndonville now operates the carbon treatment system, as necessary.

Environmental Progress
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Construction of all cleanup remedies is complete. Installation of a carbon filter in the municipal water supply by the potentially responsible parties helps ensure that the groundwater at the Darling Hill Dump site remains within Federal drinking water standards. The operation of the carbon filtration system was turned over to the Village of Lyndonville, which continues to monitor the groundwater. Subsequently, the site was deleted from the National Priorities List (NPL) on September 29, 1999, as EPA with State concurrence, determined that the potentially responsible parties have implemented all required response actions specified by the 1992 Record of Decision (ROD)

Current Site Status
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In June 1992, EPA signed the only and Final Record of Decision (ROD) which selected No Further Action as the remedial response. Therefore, no additional response actions were planned for this site. The site was deleted from the NPL in September 1999.

Site Photos
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Links to Other Site Information
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Disclaimer Instructions about PDF

Newsletters & Press Releases:
Press Releases about this project  

Federal Register Notices:
Final NPL Listing  
Final NPL Deletion  

Administrative Records:
Record of Decision (ROD) Administrative Record (AR) Index, June 30, 1992 (568 KB)  

Decision Documents:
View Records of Decision (RODS) on-line (EPA HQ)  
Institutional Controls at this site  

Other Links:
NPL Site Narrative at Listing:  
Site Progress Profile  

Site Repositories
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Town Hall, Town of Lyndon, 24 Main Street, Lyndonville, VT 05851

OSRR Records and Information Center, 1st Floor, 5 Post Office Square, Suite 100 (HSC), Boston, MA 02109-3912 (617) 918-1440

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EPA Remedial Project Manager: Ed Hathaway
Address: US Environmental Protection Agency
5 Post Office Sq., Suite 100
Mail Code: OSRR07-1
Boston, MA 02109-3912
Phone #: 617-918-1372
E-Mail Address: hathaway.ed@epa.gov

EPA Community Involvement Coordinator: Emily Bender
Address: US Environmental Protection Agency
5 Post Office Sq., Suite 100
Mail Code: ORA01-1
Boston, MA 02109-3912
Phone #: 617-918-1037
E-Mail Address: bender.emily@epa.gov


Serving Connecticut, Maine, Massachusetts, New Hampshire, Rhode Island, Vermont, & 10 Tribal Nations
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Last updated on Tuesday, November 3rd, 2015
URL: http://www.epa.gov/region1/superfund/sites/darlinghill