Extension Toxicology Network (Extoxnet): A resource established by the extension specialists in toxicology at University of California, Davis, Oregon State University, Michigan State University, and Cornell University. URL is:

http://ace.orst.edu/info/extoxnet/

Health Canada - Environmental and Workplace Health

http://www.hc-sc.gc.ca/ewh-semt/index_e.html

National Library of Medicine's links to toxicology web sites

http://sis.nlm.nih.gov/enviro.html

OSHA Permissible Exposure Levels

http://www.osha.gov/pls/oshaweb/owadisp.show_document?p_table=STANDARDS&p_id=9992&p_text_version=FALSE

Note: This contains most but not all PEL values. Most exceptions can be found in

http://www.osha.gov/pls/oshaweb/owadisp.show_document?p_table=STANDARDS&p_id=9993&p_text_version=FALSE

NIOSH IDLH (Immediately Dangerous to Life and Health) Viewer

http://www.cdc.gov/niosh/idlh/intridl4.html

Registry of Toxic Effects of Chemical substances (RTECS) database

http://ccinfoweb.ccohs.ca/rtecs/search.html

Risk Assessment Organization Links

ATSDR, Agency for toxic substances and disease registry

http://www.atsdr.cdc.gov/

CalEPA Dept. Of Environmental Health Hazard Assessment

http://www.oehha.org/home.html

CDER, Office of Pharmaceutical Science - Informatics and Computational Analysis

http://www.fda.gov/cder/Offices/OPS_IO/default.htm

Committee on Mutagenicity (COM) of Chemicals in Food, Consumer Products and the Environment, UK

http://www.advisorybodies.doh.gov.uk/com/index.htm

DOE Low Dose Radiation website

http://lowdose.tricity.wsu.edu/

EPA/NCEA risk assessment information

http://www.epa.gov/ncea/

Health Canada

http://www.hc-sc.gc.ca/index_e.html

IARC website

http://www.iarc.fr/

ILSI Health and Environmental Sciences Institute

http://www.hesiglobal.org/

International program on chemical safety Reports (WHO, UNEP, and ILO)

http://www.who.int/ipcs/publications/en/index.html

National Institute for Occupational Safety and Health

http://www.cdc.gov/niosh/homepage.html

Risk World

http://www.riskworld.com/

Society for Risk Analysis website

http://www.sra.org

Toxicology Excellence in Risk Assessment: Non-profit Risk Assessment Institute

List of Agents

http://www.tera.org/

Regulatory Review Links

EPA Exposure Factors Handbook (information useful for evaluating exposure)

http://cfpub.epa.gov/ncea/cfm/recordisplay.cfm?deid=12464

EPA Risk Assessment Guidelines

http://cfpub.epa.gov/ncea/cfm/recordisplay.cfm?deid=55907

Health Canada existing substances publications and reports

http://www.hc-sc.gc.ca/ewh-semt/pubs/contaminants/existsub/index_e.html

Overview of risk assessment methods used by various agencies

http://www.tera.org/iter/methods/

NIEHS: 11th Annual Report of Carcinogens

http://ntp.niehs.nih.gov/go/roc

Federal Register

http://www.gpoaccess.gov/fr/index.html