hot*. i. i3.f l^ottolo pig farm superfund site
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hot*. I. I3.f
l^ottolo Pig Farm Superfund Site
An overview of site condit ions and overa objectives
What 's Ahead
D Site Location & History D Remedial Actions D EPA's Five-Year Review D Data Summary D Next Steps
Site Location & Features
Site Chronology
Date
1960s-1979
1980-1983
1987
1991-1993
1998
2001
2003
2008
Event
Site under active use (disposal of wastes occurred from 1975 -1979)
Excavation and removal of soil and drums by EPA
Final listing on National Priority List (Superfund)
Remedial Investigation/Feasibility Study & Site remedy design and construction complete
Remedial Action completed & P^ Five-Year Review Report
Removal of interceptor trench & liner
Operations & Maintenance responsibilities transferred to State, 2"^ Five-Year Review Report & residential sampling program initiated
Third Five-Year Review report
What 's Ahead
n Site Location & History D Remedial Actions D EPA's Five-Year Review D Data Summary D Next Steps
Remedial Act ions
MONITORED NATURAL ATTENUATION OF PLUME
Soil Vapor Extract ion Vert ical View
K J . QUINN & COMPANY, INC. A B A L S A M
rmr OOMCEPTiut. • MWfnuk w t aNm m <KMN vAMit cntMcnoH
MIL eoNSTtuicmn B l . nsar MOTTOLO SnfE y.BJt. O.U.GL k/FS n r ^—•ram
NONE BS/B94
Source Control Remedy
What 's Ahead
D Site Location & History D Remedial Actions D EPA's Five-Year Review D Data Summary D Next Steps
EPA Th i rd Five-Year Review (Aug 08)
n Remedy protectiveness • Industrial solvents & arsenic remain
above cleanup levels • Slightly increasing concentrations • Potential residual source areas
uncharacterized • Expand monitoring program • Institutional controls not finalized
Concentrat ions vs. Time for TCE ;£4EI>0
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Residential Sampling Program
D Began in 2003 D Five residences currently D Expanding program in 2009
Results of Residential Sampling
D All sampled wells are safe D One site-related contaminant
detected at very low levels D Maximum level allowed is 5 parts per
billion D Maximum currently detected is 1/10
of safe level or 0.5 ppb D All residents informed
Summary of Next Steps
D Investigation of residual source areas D Expand monitoring program
• Install & sample additional on-site monitoring wells
• Expand residential sampling program D Combined report with
recommendations D Additional remedial action? D Institutional controls
Ins t i tu t iona l Controls ( ICs)
n Institutional controls are actions, such as legal controls, that help minimize the potential for human exposure to contamination by ensuring appropriate land or resource use.
I n s t i t u t i o n a l Contro ls & Proper t y Trans fer Opt ions
D Town relieves tax lien and Mr. Mottolo deeds the Site to the State. State administers site management.
D Mr. Mottolo deeds the Site to the Town of Raymond. Town issued GMP and State administers.
Contacts n Andrew Hoffman, P.E., Project Manager
New Hampshire Department of Environmental Services Waste Management Division 29 Hazen Drive Concord, NH 03301 Ph. (603) 271-6778
D Peter Roth, Esq. New Hampshire Department of Justice 33 Capitol Street Concord, NH 03301 Ph. (603) 271-3679
D Ron Jennings, Remedial Project Manger U.S. Environmental Protection Agency Office of Site Remediation and Restoration 1 Congress Street, Suite 1100 (HBO) Boston, MA 02114 Ph. (617) 918-1247
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