摘要：This study summarizes and compares the most relevant criminal enforcement actions to support business productivity conducted by the Environmental Protection Agency (EPA) during the fiscal years 1995-2008; the important actions under consideration are the environmental crime cases initiated, defendants charged, years sentenced, fines (and restitution) and pollutants' reductions. A correlation analysis was used to evaluate the significant relationship (p-value=0 . 002) between the environmental crime cases initiated and the period of time in years; a power regression model (via curve fitting) was estimated to explain this relationship (R 2 adj =0 . 998); the ratio of charged defendants to cases initiated (%) was measured as an indicator of the yearly enforcement productivity undertaken by the EPA, whose 95% prediction interval is graphically presented . In addition, other density measures of enforcement actions against environmental crimes, such as the years sentenced per defendant, and the economic amount of fines and restitution per defendant are included .
