PT - JOURNAL ARTICLE AU - Lee, Amanda I. AU - Alm, James TI - The Clean Air Act Amendments and Firm Investment in Pollution Abatement Equipment AID - 10.2307/3654730 DP - 2004 Aug 01 TA - Land Economics PG - 433--447 VI - 80 IP - 3 4099 - http://le.uwpress.org/content/80/3/433.short 4100 - http://le.uwpress.org/content/80/3/433.full SO - Land Econ2004 Aug 01; 80 AB - The command-and-control approach to environmental regulation requires that firms install prescribed technologies to meet specified goals. However, environmental regulations change frequently; in addition, the enforcement agency cannot perfectly monitor firm compliance. We examine the impact of uncertainties surrounding the enactment and the enforcement of the Clean Air Act Amendments of 1990 on firm investment in air pollution abatement equipment. We find that our measures of the likelihood of CAAA passage clearly affect a firm’s investment in pollution equipment. Enforcement actions also affect a firm’s investment, but these effects are weaker and are statistically significant only after enactment. (JEL Q21)