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Site Type: Long Term/National Priorities List (NPL)  |
TROY MILLS LANDFILL |
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| Troy, New Hampshire |
Cheshire County
| Street Address: | Off Rockwood Pond Road |
| Zip Code: | 03465 |
Congressional
District(s): |
02 |
| EPA ID #: | NHD980520217 |
| Site ID #: | 0101127 |
| Site Aliases: | Rockwood Brook Landfill
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| Site Responsibility: | Federal |
| NPL LISTING HISTORY |
| Proposed Date | 04/30/2003 |
| Final Date | 09/29/2003 |
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Site Description
| The Troy Mills Landfill site, which is owned by Troy Mills, Inc., is located about 1.5 miles south of the center of Troy, New Hampshire. It is situated off a dirt road and on the wooded portion of a larger 270-acre parcel of property. Sand Dam Pond, a recreational pond used for swimming and fishing, is located on Rockwood Brook approximately one mile downstream from the Troy Mills Landfill site. The two-acre Troy Mills Landfill site was used from 1967 to 1978 by the owner, a local fabric manufacturer, as a drum disposal area for an estimated 6,000-10,000 drums of liquid wastes and sludges containing solvents, vinyl resins, plasticizers, pigments, and top-coating products. Immediately to the north of the drum disposal site is a separate eight-acre solid waste landfill, regulated by the New Hampshire Department of Environmental Services (NHDES), which was used until 2001 for the disposal of waste fabric scraps and other miscellaneous solid waste from the company’s manufacturing complex. The solid waste landfill is not part of the Superfund site. |
Threats and Contaminants
EPA and the State have identified elevated levels of metals, volatile organic compounds (VOCs), and semi-volatile organic compounds (SVOCs) which originated from the drum disposal area and impacted groundwater. In 1980, the New Hampshire Water Supply and Pollution Control Division collected samples from the site which indicated the presence of inorganic constituents above background concentrations. Additional studies in the 1980s and 1990s, conducted by Troy Mills, Inc., identified crushed drums and drummed liquid and sludge wastes in the two-acre drum disposal area. Sampling of these wastes identified metals, SVOCs, and VOCs, including xylenes up to 19,000 parts per billion (ppb), bis (2-ethylhexyl) phthalate up to 110,000 ppb, benzyl butyl-phthalate up to 13,000, di-n-octyl phthalate up to 6,200 ppb, and cadmium, chromium, and zinc at varying concentrations. Elevated levels of iron and manganese were detected in groundwater and leachate samples, and 1,1,1-trichloroethane, ethylbenzene, toluene, trichloroethylene, 1,2-dichloroethane, 1,1-dichloroethane, benzene, diethylene chloride, and tetrachloroethylene were also detected in the groundwater.
In 2005, EPA completed a Remedial Investigation (RI) at the site. As part of the RI, EPA collected and analyzed surface water, sediment, and wetland soil samples from nearby Rockwood Brook and the surrounding wetland. EPA also evaluated current and historical groundwater data, collected and analyzed air and soil samples from locations throughout the drum disposal site. The RI found a plume of groundwater contamination, approximately 8-9 acres in size. Organic contaminants such as alkylbenzenes, chlorinated solvents, phthalates, and toluene are the primary chemical of concern in the groundwater. The RI also documented the presence of floating free product and contaminated leachate at the site.
Cleanup Approach
Contaminated groundwater and floating free product was detected in groundwater monitoring wells at the two-acre drum disposal site. In 2003, EPA implemented an interim system to collect the free product in a series of interceptor trenches, and in 2004 EPA commenced a drum removal action. In 2005, the drum removal action was completed and EPA issued a Record of Decision (ROD) which outlines the long-term cleanup actions to be taken at the site.
Response Action Status
| Initial Action | In 2003, EPA completed construction of a series of interceptor trenches to collect floating free product that was emanating from the two-acre drum disposal site and began maintaining the system. |
| Drum Removal Action | In July 2004, a drum removal action was initiated to excavate an estimated 6,000 to 10,000 drums buried at the site. The drum removal action was completed in Summer 2005 with the excavation and off-site disposal of 7,692 buried drums, 29,924 gallons of flammable liquid waste, 3,099 cubic yards of sludge, and 26, 244 tons of heavily contaminated soil. In addition, the interceptor trenches were maintained through the Summer of 2005. |
| Remedial Action | On September 30, 2005, the Final ROD was issued for the Troy Mills Landfill site. The ROD sets forth the selected remedy for the site which involves allowing naturally occurring processes to reduce contaminant concentrations in groundwater (i.e., monitored natural attenuation); continuing the capture and removal of free product from groundwater using the interceptor trenches installed by EPA in 2003; maintaining the permeable soil cap that was constructed by EPA in July-August 2005 over the drum excavation area; and the establishment of institutional controls. Long-term monitoring of groundwater, surface water, sediment, leachate, and wetlands will be necessary to ensure the effectiveness of the remedy. |
Environmental Progress
Completing the drum removal action has greatly reduced the risk posed to public health and the environment from potential uncontrolled releases from the buried drums. As a result, EPA has determined that this site does not pose an immediate threat to human health and the environment. EPA has issued a long-term cleanup plan for the site which will restore the groundwater to safe drinking water levels over time.
Current Site Status
Following issuance of the September 2005 ROD, long-term remedial actions have included periodic site inspections and semi-annual environmental monitoring of groundwater, surface water, and sediment quality in and around the site, including within Rockwood Brook and nearby wetlands at the site. These long-term remedial actions are being conducted by NHDES via a cooperative agreement with EPA. The first Five-Year Review report for the site is scheduled to be completed in September 2010.
Site Photos
Construction of free product collection system
Drum removal
Drum Removal
Drum Removal
Soil cap over the drum excavation area
Links to Other Site Information
Newsletters & Press Releases:
Federal Register Notices:
Administrative Records:
Reports and Studies:
Decision Documents:
Other Links:
Site Repositories
Gay-Kimball Library, 10 South Main Street, Troy, NH 03465 (603) 242-7743
EPA New England Records Center, One Congress Street, Boston, MA 02114 (617) 918-1440
Contacts
| EPA Remedial Project Manager: | Michael Jasinski |
| Site Responsibilities: | Remedial Project Manager |
| Address: | USEPA
5 Post Office Square - Suite 100 (OSRR07-1)
Boston, MA 02109-3912 |
| Phone #: | (617) 918-1352 |
| E-Mail Address: | jasinski.mike@epa.gov |
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| EPA Community Involvement Coordinator: | Rudy Brown |
| Address: | USEPA
5 Post Office Square - Suite 100 (ORA01-1)
Boston, MA 02109-3912 |
| Phone #: | (617) 918-1031 |
| E-Mail Address: | brown.rudy@epa.gov |
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| State Agency Contact: | Kenneth Kettenring |
| Address: | New Hampshire Department of Environmental Services
P.O. Box 95
29 Hazen Drive
Concord, NH 03302-0095 |
| Phone #: | (603) 271-4060 |
| E-Mail Address: | kenneth.kettenring@des.nh.gov |
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| On-Scene Coordinator (Removal Action) | Tom Hatzopolous |
| Address: | |
| Phone #: | ( 617) 918-1284 |
| E-Mail Address: | hatzopoulos.athanasios@epa.gov |
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