Review And Comparison Of A Protocol For The Derivation Of Ecological Effects Based And Human Health Based Soil Quality Criteria For Contaminated Sites July 1993 And A Rationale For The Development Of Soil Drinking Water And Air Quality Criteria For Lead October 1993 Including Reference To Scientific Criteria Document For Multi Media Environmental Standards Development March 1994 Hazardous Contaminants Branch Ontario Ministry Of Environment And Energy
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Bioavailability of Contaminants in Soils and Sediments
Author: National Research Council
language: en
Publisher: National Academies Press
Release Date: 2003-04-03
Bioavailability refers to the extent to which humans and ecological receptors are exposed to contaminants in soil or sediment. The concept of bioavailability has recently piqued the interest of the hazardous waste industry as an important consideration in deciding how much waste to clean up. The rationale is that if contaminants in soil and sediment are not bioavailable, then more contaminant mass can be left in place without creating additional risk. A new NRC report notes that the potential for the consideration of bioavailability to influence decision-making is greatest where certain chemical, environmental, and regulatory factors align. The current use of bioavailability in risk assessment and hazardous waste cleanup regulations is demystified, and acceptable tools and models for bioavailability assessment are discussed and ranked according to seven criteria. Finally, the intimate link between bioavailability and bioremediation is explored. The report concludes with suggestions for moving bioavailability forward in the regulatory arena for both soil and sediment cleanup.