Long-term Maintenance and Monitoring Report 2021

On behalf of the University of Massachusetts, this report has been prepared and is being submitted to
document the results from the 2021 long term monitoring activities conducted at the following buildings
on the University of Massachusetts Amherst Campus:

• Tobin Hall Deck – The Monitoring and Maintenance Implementation Plan (MMIP) was
submitted on March 13, 2012 in accordance with Condition 8 of the United States
Environmental Protection Agency’s (EPA) PCB Risk-Based Decontamination and Disposal
Approval dated February 28, 2012; modifications were made to the long-term monitoring
requirements following the 2015 event and communications with EPA to include annual visual
inspections and biennial wipe testing of encapsulated surfaces.

• Southwest Concourse – The MMIP was submitted on December 29, 2010 in accordance with
Condition 13 of the EPA’s Southwest Residential Area Concourse PCB Cleanup and Disposal
Approval dated August 30, 2010; monitoring activities were also conducted at those areas
described in the PCB Remediation Plan Amendment dated May 9, 2011 and along the east
side of the Patterson and MacKimmie Houses as described in the PCB Remediation Plan
dated May 15, 2017; following the 2015 monitoring event and communications with EPA,
modifications were made to the long-term monitoring requirements to include visual
inspections on an annual basis and wipe testing of encapsulated surfaces on a biennial basis.

• Dubois Library Elevator Lobbies – The MMIP was submitted on March 29, 2013 in accordance
with Condition 12 of the EPA’s Dubois Library PCB Cleanup and Disposal Approval dated April
8, 2010; following the 2015 monitoring event and communications with EPA, modifications to
the long-term monitoring were made to include visual inspections and indoor air sampling on
an annual basis and wipe testing of encapsulated surfaces on a biennial basis.

• Orchard Hill Complex:
o Webster House – The MMIP was submitted on January 5, 2012 in accordance with
Condition 16 of the EPA’s PCB Decontamination and Disposal Approval dated July 4,
2011; following completion of the 2015 monitoring event and communications with EPA,
the long-term monitoring program was modified to include annual visual inspections and
biennial wipe testing of encapsulated surfaces as well as a single round of postabatement
indoor air sampling to confirm site conditions, which was conducted in 2016.

o Field and Grayson Houses – The MMIP was submitted on January 13, 2014 in
accordance with Condition 17 of the EPA’s April 30, 2012 PCB Decontamination and
Disposal Approval for the window/door replacement project; monitoring activities were
also conducted in accordance with the MMIP for the work completed on the exterior joints
submitted on April 24, 2012 as part of the PCB Remediation Plan/Close Out Document for
Field and Grayson House; following completion of the 2015 monitoring event and
communications with EPA, the long-term monitoring program was modified to include
annual visual inspections and biennial wipe testing of encapsulated surfaces as well as a
single round of post-abatement indoor air sampling to confirm site conditions, which was
conducted in 2016.

• Sylvan Complex – The MMIP was submitted on February 20, 2014 as part of the remediation
completion reporting for the exterior and interior renovations conducted at each of the three
buildings within the Sylvan Complex (Brown, Cashin, and McNamara). Annual postremediation
monitoring has been conducted in accordance with the MMIP and additional
communications with EPA since 2014. Following completion of the 2017 monitoring event, the
long-term monitoring program was modified to include visual inspections and wipe testing of
encapsulated surfaces on a biennial basis. In addition, indoor air monitoring is being
conducted in interior areas where residual PCBs were encapsulated. On June 4, 2019, EPA
issued the PCB Decontamination and Disposal Approval for the Sylvan Complex which
included continued long-term monitoring of encapsulated surfaces.

• Physical Plant Second Floor – The MMIP was submitted on December 16, 2013 in accordance
with Condition 15 of EPA’s October 19, 2012 PCB Decontamination and Disposal Approval for
the replacement of windows in Room 230A within the Physical Plant building. Long-term
monitoring activities include visual inspections to be conducted on an annual basis.