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Abstract: Northeast
Massachusetts has the highest concentration of point sources for mercury emissions in
the state. Emissions from major point sources decreased 96% from the 1990s to 2008 as a
result of stricter controls on releases. Fish consumption is the primary exposure route
for people. This thesis used risk assessment to assess whether reduction in mercury
emissions over time was ... read morecontributing to lower exposure and risk among people who eat
fish from lakes and ponds in the Merrimack River watershed. Decreases in risk were
observed from 1999 to 2011, but this risk assessment demonstrates that unacceptable risk
continues to exist for people who eat fish from these water bodies, especially young
children. Small sample sizes and differences in average fish weight throughout the study
period introduced uncertainty in the study. The observed reduced risk has positive
public health implications but also demonstrates the continuing need for fish
advisories.
Thesis (M.S.)--Tufts University,
2017.
Submitted to the Dept. of Civil
Engineering.
Advisor: Anne Marie
Desmarais.
Committee: David Gute, and Diane
Manganaro.
Keyword: Environmental
health.read less
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