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Helpful Links

U.S. Government

Other U.S. Sites

bullet U. S. EPA (Environmental Protection Agency) Homepage

bullet U.S. EPA Integrated Risk Information System (IRIS)

bullet U.S. EPA’s Center for Exposure Assessment Modeling

bullet U.S. EPA / OPP’s Pesticide Products Databases as served by Cal/EPA DPR

bullet Simulation Environment) Modeling and Software Tool

bullet U.S. EPA’s ECOTOX database

bullet California Environmental Protection Agency (Cal/EPA)

bullet Cal/EPA’s Department of Pesticide Regulation (DPR) Chemical/Product Database Queries page

bullet Cal/EPA’s Office of Environmental Health Hazard Assessment (OEHHA). Proposition 65 information and the new Public Health Goal reports for estimated safe levels of chemicals in drinking water may be of particular interest.

bullet Centers for Disease Control and Prevention

bullet Agency for Toxic Substance and Disease Registry (ATSDR)
Provides access to a newsletter, listing of related internet resources, toxicological profiles for various chemicals, etc.

bullet ATSDR HazDat Database

bullet ATSDR ToxFAQs: Hazardous Substance Fact Sheets

bullet Department of Energy’s (DOE’s) Center for Risk Excellence. The Center develops and implements policy practices, guidance, tools, support, and training that result in risk-based decisions that protect both human health and the environment

 

bullet Department of the Interior, U.S. Fish and Wildlife Service, Environmental Contaminants Program page

 

bullet Food and Drug Administration (FDA)

 

bullet National Archives and Record Administration: Code of Federal Regulations

 

bullet National Institute for Occupational Safety and Health (NIOSH)

bullet Information about NIOSH’s databases

bullet National Institute of Environmental Health Sciences (NIEHS)

 

bullet National Institutes of Health (NIH)

 

bullet National Library of Medicine (NLM)

bullet Information about NLM’s Databases

bullet Information about NLM’s TOXNET Toxicology Data Network

bullet PubMed: Free Internet Access to 9 million citations in NLM’s MEDLINE medical literature abstracts database

bullet National Park Service Environmental Contaminants Encyclopedia

 

bullet National Science Foundation

 

bullet National Toxicology Program (NTP)

 

bullet Occupational Safety and Health Administration (OSHA)

 

bullet Toxic and Hazardous Substances Standards,OSHA 29 CFR Part 1910 Subpart Z

International

bullet Central European Environmental Data Request Facility (CEDAR)

Also provides access to other international environmental organizations and programs

 

bullet European Union European Chemicals Bureau

 

bullet The Global Information Network on Chemicals (GINC) Home Page (English version; also available in Japanese)

 

bullet International Agency for Research on Cancer (IARC)

bullet IARC Monographs 

bullet IARC summaries and evaluations  

bullet International Occupational Safety & Health Information Centre (ILO-CIS)

Includes listings of online and CD-ROM databases, useful internet resources, etc.

 

bullet International Programme on Chemical Safety (IPCS) – INCHEM

Includes access to Environmental Health Criteria Monographs, CICADs, JMPR monographs, and IARC monograph summaries

 

bullet International Society of Exposure Analysis (ISEA)

 

bullet Joint United Nations Environment Program (UNEP) International Register of Potentially Toxic Chemicals (IRPTC) and World Health Organization (WHO) GEENET Web Site

 

bullet Risk Analysis Center

A site containing information about the wide variety of risks you face as a human being. The site contains abstracts of articles from the UK national press and international press (scanned dailyl) and scientific, technical and medical journals.

 

bullet UNEP Chemicals (IRPTC) Homepage

 

bullet United Nations Environment Programme (UNEP)

Includes access to information about the International Register of Potentially Toxic Chemicals (IRPTC).

 

bullet World Health Organization (WHO)

 

bullet Canadian Centre for Occupational Health and Safety

 

bullet Canadian National Pollutant Release Inventory

 

bullet Health Canada

 

bullet Health Canada, Existing Substances Division

 

bullet Health Canada Priority Substances Assessment Program

 

bullet Health Canada Pest Management Regulatory Agency

 

bullet Institute for Risk Research

In 1982, the Institute for Risk Research (IRR) was established to conduct research into risk management and to establish a knowledge base to assist Canadian government, public and industry in risk management decisions and policies. IRR’s mission is: “To promote safety for Canadians by improving the understanding of risk and risk policy decisions”.

 

Japan

 

bullet National Institute of Health Sciences (Ministry of Health and Welfare)

 

Sweden

 

bullet Karolinska Institute

 

bullet National Institute for Working Life

 

The Netherlands

 

bullet National Institute of Public Health and Environmental Protection (RIVM)

AIHA
The mission of the American Industrial Hygiene Association is to increase the knowledge of industrial and environmental health through interchange and dissemination of information; to bring together persons interested in the various phases of industrial and environmental health; to promote the profession through the encouragement of interest within and cooperation with governmental, industrial, educational, and other professional bodies, and to promote the study, evaluation, and control of environmental stresses arising in or from the work place or its products.

 

ACGIH
The American Conference of Governmental Industrial Hygienists (ACGIH) is a member-based organization and community of professionals that advances worker health and safety through education and the development and dissemination of scientific and technical knowledge.

 

American Board of Toxicology

 

American College of Toxicology
The mission of the American College of Toxicology is to educate and lead professionals in industry, government and related areas of toxicology by actively promoting the exchange of information and perspectives on the current status of safety assessment and the application of new developments in toxicology.

 

Cumulative and Aggregate Risk Evaluation System (CARES)

A new, comprehensive, open source software program under development by the American Crop Protection Association (ACPA) to address risk assessment requirements mandated by the 1996 Food Quality Protection Act (FQPA).

 

The Environmental Fate Data Bases (EFDB) are now available free of charge thanks to Syracuse Research Corporation and support from U.S. EPA, Procter & Gamble, and Du Pont. These online databases identify or provide all of the information necessary for assessing human or environmental exposure to chemicals from occupational and consumer use, environmental contamination, and food consumption. This is a excellent way to identify physical properties (water solubility, vp, log P, pKa, Henry’s law constants, etc.), degradation or transport information, and ambient and effluent monitoring data. EFDB is comprised of several interrelated files — DATALOG, BIOLOG, CHEMFATE and BIODEG and was developed by Syracuse Research Corporation under the sponsorship of the EPA since1979.

 

DATALOG is a bibliographic file that contains 18 types of environmental fate data, including information about physical properties, environmental degradation, transport processes and monitoring. The file is indexed by CAS Registry Numbers and contains over 350,000 records on over 16,000 chemicals.

 

BIOLOG provides sources of microbial toxicity and data concerning biodegradation. It contains 60,000 records on 7,600 chemicals.

 

CHEMFATE contains 23 data categories relating to commercially important chemical compounds, including information on environmental fate, chemical and physical properties, and monitoring data. Actual experimental values are abstracted and retained in the file. CHEMFATE contains 17,214 records on 1,728 chemicals.

 

BIODEG contains experimental values derived from biodegradation studies and includes evaluation codes that can be used for predicting biodegradability. This file contains actual experimental results for approximately 1,000 chemicals.

 

Environmental Mutagenesis Society
The Environmental Mutagen Society (EMS) is the primary scientific society fostering research on the basic mechanisms of mutagenesis as well as on the application of this knowledge in the field of genetic toxicology.

 

EXtension TOXicology NETwork (EXTOXNET)
Cooperative effort among various universities to stimulate dialog on toxicology issues, and to make toxicology information available. Includes newsletter, fact sheets, chemical profiles, etc.

 

ILSI
Through its international network of branches, ILSI works toward global harmonization and by helping to solve scientific problems that touch people in many countries and regions.

 

The LifeLine Group
The LifeLine Group is a not for profit organization that is the creator of LifeLine(TM) Software for the Assessment of Cumulative and Aggregate Exposures to pesticides and other chemicals.

 

LINEA Inc.
A world leader in exposure assessment for chemicals and pesticides

 

Ohio Society for Risk Analysis
The Ohio Chapter of the Society for Risk Analysis (OSRA) is an officially chartered chapter of the national SRA, and maintain a membership independent of, but in association with, the national organization. They are interested in risk analysis, risk assessment and risk management and represent the academic, commercial, consultative, governmental and industrial sectors. 

 

Resources for the Future (RFF)
This Washington, D.C. organization includes a Center for Risk Management, and this site provides linkages to the homepages of other information

 

RiskWorld
An international www publication, covering news and views on risk assessment and risk management

 

Toxicology News Group via the BIOSC/bionet Electronic Newsgroup Network for Biology
Choose “toxicology” from the newsgroups listed in “archives”.

 

SETAC
Society of Environmental Toxicology and Chemistry (SETAC®)

 

Society for Risk Analysis
The Society for Risk Analysis (SRA) provides an open forum for all those who are interested in risk analysis. Risk analysis is broadly defined to include risk assessment, risk characterization, risk communication, risk management, and policy relating to risk.

 

Society of Toxicology
The Society of Toxicology is a professional and scholarly organization of scientists from academic institutions, government, and industry representing the great variety of scientists who practice toxicology in the U.S. and abroad. The Society promotes the acquisition and utilization of knowledge in toxicology, aids in the protection of public health, and facilitates disciplines. The Society has a strong commitment to education in toxicology and to the recruitment of students and new members into the profession.

Corporate Info

Resources

Our Brands

  • ITER ITER

Contacts

  • 1250 Ohio Pike, Suite 197, Cincinnati Ohio 45102
  • 513.488.1990
  • TERA@TERA.ORG

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WEEL OEL

Occupational Exposure Limits (OELs) are designed to safeguard the health of healthy workers during their careers. These limits are based on the assumption of repeated daily exposure throughout a working lifetime, typically averaged over an 8-hour workday. Their purpose is to prevent both immediate (acute) and long-term (chronic) health issues arising from workplace exposures. It’s important to note that OELs are not intended for the general public, which includes vulnerable groups like infants, the elderly, and those with pre-existing health conditions.

Workplace Environmental Exposure Levels (WEELs) are health-based guidelines for chemical hazards in the workplace. These values represent air concentrations believed to protect the majority of workers from negative health effects resulting from occupational chemical exposure.

The WEEL Process
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The development of new or revision of existing WEELs is typically assigned to voluntarily designated subcommittees. A subcommittee usually comprises 3 – 4 members from the WEEL Committee. New WEELs are developed using the OARS-WEEL administrative standard operating procedure (SOP), while existing WEELs are usually revised every 10 years, unless the availability of significant new data which may impact the existing WEEL value compels the committee to make a revision sooner. The OARS-WEEL SOP contains procedures and guidelines governing conflicts of interest, draft document preparation, literature searches, draft document review, balloting process, post-ballot WEEL documentation quality assurance scientific review, and publication.

Once a subcommittee has prepared a draft WEEL document, a review of the draft is scheduled for the next available Committee meeting. The WEEL Committee members are expected to have reviewed all such drafts prior to the meeting. If no major changes are necessary to a draft, the attending Committee membership may, by a simple majority, approve the WEEL for balloting. Alternatively, the Committee may direct the subcommittee to revise the WEEL and present it for further discussion at a future meeting. If a ballot is not approved by a two-thirds majority of non-abstaining Committee members, it is discussed at the next Committee meeting to determine the appropriate course of action. Once the WEEL is approved by a two-thirds majority of non-abstaining Committee members, copies of ballot comments are forwarded to the designated subcommittee and all substantive comments must be addressed in the final draft. If resolution of a substantive comment results in a change to the WEEL value or a change in the basis for the value, the draft must be re-balloted.

Once all comments have been addressed on a successfully balloted draft, document formatting and editorial review are performed by TERA, before the draft WEEL document is made available for public comment (usually for a period of 30 days but may be extended if the need arises). After the public comment period has elapsed, comments are addressed by the subcommittee responsible for that specific draft, after which the WEEL documentation is submitted to Toxicology and Industrial Health (TIH), a peer-reviewed medical journal that covers research in the fields of occupational health and toxicology, for publication. A thorough review of the galley proof by the scientific content quality coordinator at TERA, and proofreaders and editors at TIH is the penultimate step before eventual publication of the WEEL documentation.

The WEEL Committee

The OARS-WEEL Committee is composed of volunteer experts specializing in the scientific determination of occupational exposure levels. This committee actively seeks a balanced representation of professionals from toxicology and industrial hygiene, drawing upon a diverse range of experience from industry, government, academia, and consulting. Importantly, each member contributes to the Committee based on their individual expertise and not as an official representative of their respective employer, organization, or agency.