The following Internet resources are given to assist with determining the parameters associated with toxicity and mobility.
ATSDR Minimum Risk Levels (MRLs)
The United States Agency for Toxic Substances and Disease Registry have developed minimum risk levels (MRLs). An MRL is an estimate of the daily human exposure to a hazardous substance that is likely to be without appreciable risk of adverse non-cancer health effects over a specified duration of exposure. These substance-specific estimates, which are similar to the US EPA's RfD values, are intended to serve as screening levels to be used by ATSDR health assessors and other responders to identify contaminants and potential health effects that may be of concern at hazardous waste sites. MRLs are derived for acute (1-14 days), intermediate (> 14-364 days), and chronic (365 days and longer) exposure durations, and for the oral and inhalation routes of exposure.
IRIS Substance List
The Integrated Risk Information System (IRIS), prepared and maintained by the US EPA, is an electronic database containing information on human health effects that may result from exposure to various chemicals in the environment. IRIS was initially developed for EPA staff in response to a growing demand for consistent information on chemical substances for use in risk assessments, decision-making and regulatory activities. The information in IRIS is intended for those without extensive training in toxicology, but with some knowledge of health sciences.
Pennsylvania's Land Recycling Program Technical Guidance Manual
The Department of Environmental Protection, Bureau of Land Recycling and Waste Management, developed this manual to assist remediators in satisfying the requirements of the Land Recycling and Environmental Remediation Standards Act (Act 2 of 1995). Tables provided include Koc and Kd values.
IPCS INCHEM - Environmental Health Criteria Monographs
IPCS INCHEM is produced through co-operation between the International Programme on Chemical Safety (IPCS) and the Canadian Centre for Occupational Health and Safety (CCOHS). IPCS INCHEM directly responds to one of the Intergovernmental Forum on Chemical Safety (IFCS) priority actions to consolidate current, internationally peer-reviewed chemical safety-related publications and database records from international bodies, for public access.
The Extension TOXicology NETwork (EXTOXNET)
The EXTOXNET InfoBase provides a variety of information about pesticides.
Inventory of Information Sources on Chemicals. Compiled by the United Nations