Statistical Approach to Meeting Soil Cleanup Goals
| Autor: | Neil S. Shifrin, Teresa S. Bowers, Brian L. Murphy |
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| Rok vydání: | 1996 |
| Předmět: | |
| Zdroj: | Environmental Science & Technology. 30:1437-1444 |
| ISSN: | 1520-5851 0013-936X |
| DOI: | 10.1021/es9407047 |
| Popis: | The establishment of health-protective soil remediation levels often relies on the results of a risk assessment, which provides a way to equate a permissible risk to a target soil contaminant concentration. Inherent in such risk assessments is the assumption that the target concentrations are representative averages. Unfortunately, soil cleanup levels thus calculated are typically misapplied on a point by point basis rather than on an average. This is not cost-effective because it results in post-remedy conditions that overshoot the target risk goals. Because environmental contamination is characterized by a distribution of concentrations, some exceedances of target averages, average risk, or average concentration can be allowed in the post-remediation distribution. This work presents a mathematical model for calculating this allowable higher than average concentration, termed the confidence response goal (CRG), which places a limit on concentrations requiring remediation while ensuring that target averag... |
| Databáze: | OpenAIRE |
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