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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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 Londonderry,  New Hampshire
 Rockingham County
 Street Address: RTE 102
 Zip Code: 03053

 EPA ID #: NHD062004569
 Site ID #: 0101106
 Site Aliases:

 Site Responsibility: Federal, State, Potentially Responsible Parties

 Proposed Date 12/30/1982
 Final Date 09/08/1983

Site Description
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The Tinkham Garage site covers approximately 375 acres in Londonderry, NH. During 1978 and 1979, oil, oily wastes, washings from septic tank trucks, and other substances were discharged at the site. In 1978, residents complained of foam and odors in a small unnamed brook, which prompted an investigation. This investigation revealed that improper waste disposal had occurred. The State ordered the site owner to prevent further degradation of the surface water and groundwater in the area. In early 1983, drinking water wells at the Londonderry Green Apartment complex and several other private supply wells were closed due to contamination, and residents were provided access to a municipal water supply. A majority of the site includes wooded land and open fields; however, a Home Depot and Staples were constructed on the northeast corner of the property in 2003 and a residential development (active senior housing) is currently being constructed over the center of the site. The residential development will consist of about 165 retirement homes. Currently, approximately 400 people reside within a condominium complex on the western boundary of the site. Additional residences include private, single family homes to the north.

Threats and Contaminants
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Volatile organic compounds (VOCs) were identified in the surface water and groundwater on-site and in areas adjacent to the site. The soils located in the field behind the Tinkham Garage site and in two condominium complex leachfields also contained VOC contamination. A potential threat to residents may exist if the contaminated groundwater were to be used as a drinking water source.

Cleanup Approach
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Initial Actions and long-term cleanup efforts are being utilized at this site.

Response Action Status
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Initial Action The State issued a health order in early 1983, advising residents not to drink their well water. Bottled water was initially provided until a municipal water supply line was installed and began operating in the fall of 1983.

Entire Site -- 1986 ROD The cleanup approach selected in the 1986 Record of Decision (ROD) for the site included: on-site treatment of contaminated soils by vacuum extraction; backfilling, regrading, and revegetating source areas after contaminated soils have been excavated; extraction and off-site treatment of contaminated groundwater at the Town of Derry's wastewater treatment works, which required on-site pre-treatment; and groundwater monitoring on- and off-site.
Design activities were completed in 1994 and soil cleanup began in early 1994. The groundwater cleanup began in late 1994, following the construction of a municipal sewer line between the site and the Town of Derry wastewater treatment plant. The soil cleanup was completed in late 1995. Pre-treatment was eliminated from the groundwater cleanup in late 1995 as contaminant levels continued to drop. Groundwater pumping was suspended in 2001. An Explanation of Significant Differences (ESD) was finalized in 2003 which calls for groundwater monitoring to continue until drinking water standards are obtained through natural attenuation processes. A five year review was completed in the spring of 2004. A Reuse Assessment was completed in September 2004. The third five year review was completed in March 2009.

Enforcement HighlightsThe potentially responsible parties, under a Consent Decree, agreed to undertake the design and cleanup of the site. This site is closely associated with the Sylvester's, Plymouth Harbor, and Cannon Engineering NPL sites.

Environmental Progress
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All construction at the site is complete. The provision of an alternate drinking water source has reduced the potential for exposure to contamination at the Tinkham Garage site and protected public health while cleanup activities were being completed. Contaminated soil from the two leach fields and the soil pile have been removed from the condominium area and cleaned up along with soils in the garage area.

Current Site Status
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EPA issued a comfort letter to Home Depot on October 31, 2000, and Home Depot began construction of a large retail building in December 2000 on the northeast corner of the site. A Staples was constructed adjacent to the Home Depot in 2003. During 2002, groundwater monitoring continued and EPA began preparing an Explanation of Significant Differences (ESD) to change the remedy from active pump and treatment to natural attenuation of the groundwater to achieve cleanup levels. The ESD was finalized in 2003. Construction of a 165 unit residential retirement development began on the site in January, 2004. A renewed Groundwater Management Zone (GMZ) permit was approved by the State of NH in November 2007 to ensure that the existing groundwater institutional controls remain in place until cleanup levels are achieved. The Third 5-Year Review for the site was completed in March 2009.

Site Photos
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SDMS 454318
Construction of the Residential Retirement Development on the Tinkham Garage Superfund Site.

Links to Other Site Information
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Disclaimer Instructions about PDF

Newsletters & Press Releases:
Press Releases about this project  
EPA Update, September 2004 (151KB)  

Federal Register Notices:
Final NPL Listing  

Administrative Records:
Supplement to Explanation of Significant Differences (ESD), Operable Unit (OU) 1 Administrative Record (AR) Index, January 21, 1992, (470 KB)  
Amended Record of Decision (ROD) Administrative Record (AR) Index, Operable Unit (OU) 1, March 10, 1989, (565 KB)  

Reports and Studies:
Five Year Review Report, March 31, 1999 (468KB)  
Second Five Year Review Report, March 30, 2004 (372KB)  
Reuse Assessment, September 2004 (149KB)  
Third Five Year Review Report, March 24, 2009 (7.85 MB)   
Fourth Five Year Review Report, September 17, 2014 (5.40 MB)  

Decision Documents:
View Records of Decision (RODS) on-line (EPA HQ)  
Explanation of Significant Differences, March 31, 2003 (799KB)  
Institutional Controls at this Site  

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

Site Repositories
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Leach Library, 276 Mammoth Road, Londonderry, NH 03053

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: Cheryl Sprague
Address: US Environmental Protection Agency
5 Post Office Square, Suite 100
Mail Code: OSRR07-1
Boston, MA 02109-3912
Phone #: 617-918-1244
E-Mail Address: sprague.cheryl@epa.gov

EPA Community Involvement Coordinator: Rodney Elliott
Address: US Environmental Protection Agency
New England Regional Laboratory
11 Technology Drive
Chelmsford, MA 01863-2431
Phone #: 617-918-8372
E-Mail Address: elliott.rodney@epa.gov

State Agency Contact: Kenneth Richards
Address: P.O. Box 95
Concord, NH 03302-0095
Phone #: 603-271-4060
E-Mail Address: kenneth.richards@des.nh.gov


Serving Connecticut, Maine, Massachusetts, New Hampshire, Rhode Island, Vermont, & 9 Tribal Nations
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Last updated on Wednesday, May 27th, 2015
URL: http://www.epa.gov/region1/superfund/sites/tinkham