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Superfund Cleanups and Children’s Lead Exposure

Author

Listed:
  • Klemick, Heather
  • Mason, Henry
  • Sullivan, Karen

Abstract

This study evaluates the effect of EPA’s Superfund cleanup program on children’s lead exposure. We linked two decades of blood lead level (BLL) measurements from children in six states with data on Superfund sites and other lead risk factors. We used quasi-experimental methods to identify the causal effect of proximity to Superfund cleanups on rates of elevated BLL. We estimated a difference-in-difference model comparing the change in elevated BLL of children closer to versus farther from lead-contaminated sites before, during, and after cleanup. We also estimated a triple difference model including children near hazardous sites with minimal to no lead contamination as a comparison group. We used spatial fixed effects and matching to minimize potential bias from unobserved differences between the treatment and comparison groups. Results indicate that Superfund cleanups lowered the risk of elevated BLL for children living within 2 kilometers of lead-contaminated sites 8 to18 percent.

Suggested Citation

Handle: RePEc:ags:nceewp:283552
DOI: 10.22004/ag.econ.283552
as

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