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Exposure Limits
National Summary
OSHA has developed 470 Permissible Exposure Limits (PEL) for various forms of approximately 300 chemical substances. The PELs provide numeric standards that determine how long a worker may be exposed in the workplace to a threshold amount of an airborne contaminant without adverse effects on health. To achieve compliance, a facility must determine then implement administrative and engineering controls when feasible and require use of PPE and other protective measures when necessary.
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Proposed Regulations 29 CFR 1910, 1915, 1917, 1918, and 1926 - Occupational Exposure to Hexavalent Chromium 10/04/2004National
Final Regulations 29 CFR 1910, 1915, 1917, 1918, and 1926 - Occupational Exposure to Hexavalent Chromium 02/28/2006National
Notices A Review of the Reference Dose and Reference Concentration Processes 05/21/2003National
Notices Agency Information Collection Activities: Application of Measures of Spontaneous Motor Activity for Behavioral Assessment in Human Infants 11/02/2004National
Notices Agency Information Collection Activities: Health Effects of Environmental Exposures Among Children Living in the Detroit, Michigan Area 12/07/2004National
Notices Agency Information Collection Activities; Personal Exposure of High-Risk Subpopulations to Particles 03/09/2004National
Notices Agency Information Collection Activities; Pre-Manufacture Review Reporting and Exemption Requirements for New Chemical Substances and Significant New Use Reporting Requirements for Chemical Substances 12/07/2011National
Notices An Approach to Using Toxicogenomic Data in U.S. EPA Human Health Risk Assessments: A Dibutyl Phthalate Case Study 01/13/2010National
Notices Cooperative Agreement for a Research Program on Exposure-Dose Reconstruction Notice of Availability of Funds 05/14/2003National
Guidance Documents Criteria for a Recommended Standard – Occupational Exposure to Respirable Coal Mine Dust,  National
Guidance Documents Crystalline Silica Exposure Card for Construction  National
Guidance Documents Crystalline Silica Exposure Card for Construction (Spanish version)  National
Guidance Documents Crystalline Silica Exposure Card for General Industry  National
Guidance Documents Crystalline Silica Exposure Card for General Industry (Spanish version)  National
Notices Data Submissions for the Voluntary Children's Chemical Evaluation Program; Request for Comment on Renewal of Information Collection Activities 12/13/2005National
Notices Draft EPA's Reanalysis of Key Issues Related to Dioxin Toxicity and Response to NAS Comments 06/23/2010National
Notices Draft EPA's Reanalysis of Key Issues Related to Dioxin Toxicity and Response to NAS Comments (EPA/600/R-10/038A) 06/14/2010National
Notices Draft Toxicological Review of 1,1,2,2-Tetrachloroethane: In Support of Summary Information on the Integrated Risk Information System (IRIS) 12/17/2009National
Notices Draft Toxicological Review of 1,2,3-, 1,2,4-, and 1,3,5-Trimethylbenzene 06/29/2012National
Notices Draft Toxicological Review of 1,4-Dioxane: In Support of Summary Information on the Integrated Risk Information System 09/16/2011National
Notices Draft Toxicological Review of 1,4-Dioxane: In Support of Summary Information on the Integrated Risk Information System (IRIS) 08/31/2011National
Notices Draft Toxicological Review of 1,4-Dioxane: In Support of Summary Information on the Integrated Risk Information System (IRIS) 02/13/2012National
Notices Draft Toxicological Review of 1,4-Dioxane: In Support of the Summary Information in the Integrated Risk Information System 05/07/2009National
Notices Draft Toxicological Review of 1,4-Dioxane: In Support of the Summary Information in the Integrated Risk Information System 06/09/2009National
Notices Draft Toxicological Review of 1,4-Dioxane: In Support of the Summary Information in the Integrated Risk Information System; Correction 06/17/2009National
Notices Draft Toxicological Review of 2-Hexanone: In Support of the Summary Information in the Integrated Risk Information System 03/03/2008National
Notices Draft Toxicological Review of 2-Hexanone: In Support of the Summary Information in the Integrated Risk Information System 04/23/2008National
Notices Draft Toxicological Review of Acrylonitrile: In Support of Summary Information on the Integrated Risk Information System 06/30/2011National
Notices Draft Toxicological Review of Acrylonitrile: In Support of Summary Information on the Integrated Risk Information System (IRIS) 08/31/2011National
Notices Draft Toxicological Review of Ammonia: In Support of the Summary Information in the Integrated Risk Information System (IRIS) 06/08/2012National
Notices Draft Toxicological Review of Beryllium and Compounds: In Support of the Summary Information in the Integrated Risk Information System (IRIS) 06/04/2008National
Notices Draft Toxicological Review of Biphenyl: In Support of Summary Information on the Integrated Risk Information System (IRIS) 09/30/2011National
Notices Draft Toxicological Review of Biphenyl: In Support of Summary Information on the Integrated Risk Information System (IRIS); Peer Review Meeting 03/02/2012National
Notices Draft Toxicological Review of Carbon Tetrachloride: In Support of the Summary Information in the Integrated Risk Information System 05/21/2008National
Notices Draft Toxicological Review of Carbon Tetrachloride: In Support of the Summary Information in the Integrated Risk Information System 06/24/2008National
Notices Draft Toxicological Review of Carbon Tetrachloride: In Support of the Summary Information in the Integrated Risk Information System 09/09/2008National
Notices Draft Toxicological Review of Cerium Oxide and Cerium Compounds and Beryllium and Compounds: In Support of the Summary Information in the Integrated Risk Information System; Correction 06/10/2008National
Notices Draft Toxicological Review of Cerium Oxide and Cerium Compounds:In Support of the Summary Information in the Integrated Risk Information System (IRIS) 05/06/2008National
Notices Draft Toxicological Review of Chloroprene: In Support of the Summary Information in the Integrated Risk Information System 11/05/2009National
Notices Draft Toxicological Review of Chloroprene: In Support of the Summary Information in the Integrated Risk Information System (IRIS) 12/01/2009National
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