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Abstract: Polychlorinated biphenyls (PCBs) were present in construction
materials used in schools from the 1950s to the 1970s. The discovery of PCBs in a school
produces various difficulties including costly remediation and disruption of operations.
This thesis evaluated data from building materials and media collected in a school to
determine the nature and extent of PCB contamination and to ... read moredetermine the effectiveness of
remediation in reducing surface and indoor air concentrations. Spatial variability and the
effect of indoor air temperature on air concentrations were also evaluated. Results
indicated that various building materials contained PCBs and that the compounds had
migrated into nearby media. Post-remediation samples showed a reduction in indoor air
concentrations and a significant (p=0.001) reduction in median surface concentrations.
Significant spatial differences in indoor air concentrations were shown between two areas
of the school (p= 0.05). Indoor air PCB levels were not found to be correlated with indoor
temperature.
Thesis (M.S.)--Tufts University, 2013.
Submitted to the Dept. of Civil Engineering.
Advisor: Anne Marie Desmarais.
Committee: David Gute, and Mark Woodin.
Keywords: Environmental science, Environmental engineering, and Environmental
health.read less
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