Measuring the Effects of Environmental Regulations: The Critical Importance of a Spatially Disaggregated Analysis

Maximilian Auffhammer, Antonio Bento () and Scott E. Lowe

Department of Agricultural & Resource Economics, UC Berkeley, Working Paper Series from Department of Agricultural & Resource Economics, UC Berkeley

Abstract: We examine the effects of the 1990 Clean Air Act Amendments (CAAA) on ambient concentrations of PM10 in the United States between 1990 and 2005. Consistent with prior literature, we find that non-attainment designation has no effect on the average monitor in non-attainment counties, after controlling for weather, socioeconomic characteristics at the county level and lagged concentrations. In sharp contrast, if we allow for heterogeneous treatment by type of monitor and county, we do find that the 1990 CAAA produced substantial effects. Our estimation results suggest that non-attainment counties with single monitors experienced a drop in concentrations of 10.5% relative to attainment counties. In non-attainment counties with multiple monitors, the overall effect of the regulation is an increase of ambient PM10 concentrations by 1.9%. The dirtiest monitors in these counties, however, experienced drops in PM10 of 6.1%, which suggest that regulators focus their attention on the dirtiest monitors.

Keywords: Air Pollution; Clean Air Act; Spatial Modeling (search for similar items in EconPapers)
Date: 2007-08-29
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Citations: View citations in EconPapers (2)

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Related works:
Working Paper: Measuring the Effects of Environmental Regulations: The Critical Importance of a Spatially Disaggregated Analysis (2007)
Working Paper: Measuring the Effects of Environmental Regulations: The Critical Importance of a Spatially Disaggregated Analysis (2007)
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