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Site Type: Long Term/National Priorities List (NPL)  |  |
MOTTOLO PIG FARM | |
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Map this site in Cleanups in My Community |
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| Raymond, New Hampshire |
Rockingham County
| Street Address: | Blueberry Hill Road |
| Zip Code: | 03077 |
Congressional
District(s): |
01 |
| EPA ID #: | NHD980503361 |
| Site ID #: | 0101123 |
| Site Aliases: |
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| Site Responsibility: | Federal, State |
| NPL LISTING HISTORY |
| Proposed Date | 04/10/1985 |
| Final Date | 07/22/1987 |
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Site Description
The 50-acre Mottolo Pig Farm Superfund site is an abandoned pig farm located on an undeveloped wooded lot within the Town of Raymond, NH. From 1975 to 1979, the owner of the Mottolo property disposed of chemical manufacturing wastes from two companies in a 1/4-acre fill area adjacent to the piggery buildings. During this 4-year period, over 1,600 drums and pails of wastes, including organic compounds such as toluene, xylene, and methyl ethyl ketone, were disposed of at the site. Studies by the State of New Hampshire showed that groundwater beneath the site was contaminated and that contaminants were seeping into a brook on the Mottolo property that eventually empties into the Exeter River. The Exeter River is a drinking water supply for the nearby communities of Exeter, Hampton, and Stratham. An estimated 1,600 people depend on groundwater within three miles of the site as a source of drinking water. There are approximately 200 single family residences located within one mile of the site, with the nearest residence located approximately 600 feet to the west of the former disposal area. Residential areas border the site property on all sides, as of 2010.
Threats and Contaminants
Specific contaminants detected in groundwater include volatile organic compounds (VOCs) and arsenic. The only potential threat to public health is exposure to contaminated groundwater above drinking water standards.
Cleanup Approach
The initial cleanup approach included removal of leaking barrels and contaminated soils and a subsequent, more extensive soil cleanup which was intended to eliminate the source of groundwater contamination. The ongoing remedy for the site groundwater continues to include natural attenuation; even though contamination was recently (2009) drawn off-site by residential well pumping - which has been addressed via a waterline extension installed in 2012 to the affected residents.
Response Action Status
| Initial Action | In 1980, under authority of the Clean Water Act, the EPA used emergency funds to excavate and store drums on-site. From 1981 to 1982, the EPA removed over 1,600 drums and pails from the site along with 160 tons of contaminated soil, preventing further contamination of the soil and groundwater. The EPA actions also included limiting site access, sampling and analyzing materials, strengthening berms, overpacking containers, and removing and disposing of materials. The EPA excavated observation pits to determine if surface water diversion was feasible.
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| Entire Site - 1991 Record of Decision | Based on studies performed by the parties potentially responsible for contamination at the site, the EPA selected groundwater, surface water, and soil cleanup remedies which were documented in a 1991 Record of Decision (ROD). The selected remedies included installing a groundwater interceptor trench; sealing the ground surface in both the former drum disposal area and the southern boundary area with temporary caps; and installing and operating a vacuum extraction system to remove VOCs from the soils. Additional measures included installing a security fence to limit access to contaminated areas, continued monitoring of groundwater and surface water, and institutional controls, which would restrict the use of contaminated groundwater and prevent disturbance of cleanup activities. The interceptor trench and fence were installed in the fall of 1992. Construction of the vacuum extraction system was completed in 1993 and operated until December 1996 when soil cleanup levels were attained. In 2001, all cleanup equipment were successfully removed from the site. Natural attenuation is the remedy for groundwater as the sources of contamination were removed. In 2003, the State of New Hampshire assumed the lead for long-term operation and maintenance of the site, including long-term monitoring.
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| Long-Term Monitoring | Until all contamination is cleaned-up from a Superfund site, EPA conducts site reviews at least every 5 years (site evaluations, termed “5-year reviews”) to ensure that the selected remedies are performing as designed. The first two five year reviews (1998 & 2003) at Mottolo found the natural attenuation remedy for groundwater was performing as expected. The third five year review (2008), however, found persistent VOCs in groundwater on the site at levels higher than expected which indicated that natural attenuation of the groundwater was not occurring uniformly across the site, and that continued residential development around the Mottolo property maybe of concern. Based on these findings, the August 2008 five year review report made a number of recommendations, including expanding the sampling of nearby residential wells to ensure that exposures to contaminated groundwater were not occurring.
During the summer of 2009, the State (NHDES) initially expanded residential well sampling to include some 34 residences surrounding the site and found what appeared to be site-related VOCs in 4 wells at levels just above or below drinking water standards. In addition, arsenic was found in 12 wells at levels above the drinking water standard of 10 parts per billion. NHDES immediately provided all affected homes with either bottled water and/or individual treatment systems.
Because of the recent contamination found in nearby residential wells, EPA and NHDES re-evaluated the soils on-site in September/October 2009 to confirm that all soil contamination had been removed from the site. The findings from this effort did not identify any significant contaminant source remaining within the soils on the site.
In addition, from the summer of 2009 through June 2010, NHDES and their contractors have conducted additional residential well sampling in up to 70 locations, installed additional monitoring wells on the site, and performed geophysical investigations and an aquifer test within the site area to determine the extent of site-related contamination in residential areas.
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| Record of Decision Amendment - September 2010 | EPA, working with the NHDES, has recently completed numerous, additional field investigations at and surrounding the site to determine the nature and extent of impacts from site-related contamination in nearby residential wells. A Focused Feasibility Study (FFS) was prepared in July 2010 which evaluated several alternative water supply options for approximately 25 impacted residential wells. EPA issued a Proposed Plan to the public and held an informational public meeting on the plan on August 4, 2010. The 30-day comment period on the Proposed Plan ended on September 6, 2010. A Record of Decision (ROD) Amendment which selected an approximate 2+ mile waterline extension to approximately 25 residences near the Site was signed on September 22, 2010.
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| Enforcement Highlights | In 1988, the EPA and the K.J. Quinn Company signed an Administrative Consent Order, in which the company agreed to perform an investigation of the site under EPA and state oversight. In 1991, a Consent Decree was entered between EPA and Quinn requiring payment of certain EPA costs. In 1997, the United States entered into a stipulation in the Chapter 7 bankruptcy of Richard A. Mottolo. In 1999, a Second Consent Decree was entered requiring Quinn to pay a portion of EPA's past and future costs. |
Environmental Progress
The August 2008 Five-Year Review report identified several issues concerning the effectiveness of the remedy. An expanded residential well sampling program was instituted by the NHDES during the summer of 2009 and has continued into 2010. Additional soil sampling (Fall 2009) was conducted by EPA and NHDES to re-evaluate site conditions. Installation of additional groundwater wells, monitoring and field investigations were performed during the fall of 2009 through June 2010. A Record of Decision (ROD) Amendment, which selected a waterline extension to approximately 25 residences near the Site, was signed on September 22, 2010 (see discussion above).
Current Site Status
Remedial Design activities for the waterline commenced in November 2010 and were completed during the Summer of 2011. Subsequently, the design was solicited to numerous prospective bidders, and a local New Hampshire firm (American Excavating) was awarded the waterline construction project in October 2011. Tree cutting/clearing and some waterline construction work took place in late 2011-early 2012 due to favorable winter weather conditions. The bulk of the waterline construction and residential water hook ups occurred from April-August 2012. All 25 residences are presently hooked up to municipal water, and EPA-NHDES are working with the Town of Raymond to put in place the appropriate groundwater use restrictions to the area. The NHDES continues to perform groundwater sampling and analysis for both onsite monitoring wells and numerous residential wells near the site.
Site Photos
Drum removal - 1980
Completion of soils cleanup - 1997
Links to Other Site Information
Newsletters & Press Releases:
Federal Register Notices:
Administrative Records:
Reports and Studies:
Remedial Investigation Report Volumes I Through VIII, September 28, 1990 (opening file is 16.5 MB with links to additional PDFs)  | | |
| Five Year Review Report, September 11, 1998 (442KB) | | |
| Second Five-Year Review Report, September 10, 2003 (931KB) | | |
| Third Five-Year Review, August 26, 2008 (9.84 MB) | | |
| Focused Feasibility Study, July 2010 (Opening file is 29.4 MB with links to other PDF files) | | |
| Proposed Plan, July 2010 (584 KB) | | |
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Decision Documents:
Other Links:
Site Repositories
Dudley-Tucker Library, 6 Epping Street, Raymond, NH 03077
OSRR Records and Information Center, 1st Floor, 5 Post Office Square, Suite 100 (HSC), Boston, MA 02109-3912 (617) 918-1440
Contacts
| EPA Remedial Project Manager: | Michael Jasinski |
| Site Responsibilities: | Chief, NH/RI Superfund Section |
| Address: | US Environmental Protection Agency
5 Post Office Sq., Suite 100
Mail Code 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: | Kelsey O'Neil |
| Address: | US Environmental Protection Agency
5 Post Office Sq., Suite 100
Mail Code ORA01-1
Boston, MA 02109 - 3912 |
| Phone #: | 617-918-1003 |
| E-Mail Address: | oneil.kelsey@epa.gov |
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| State Agency Contact: | Andrew Hoffman |
| Address: | New Hampshire Department of Environmental Services
Hazardous Waste Remediation Bureau
P.O. Box 95
Concord, NH 03301-0095 |
| Phone #: | 603-271-6778 |
| E-Mail Address: | andrew.hoffman@des.nh.gov |
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