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Washington Administrative Code (Last Updated: November 23, 2016) |
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Title 296. Labor and Industries, Department of |
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Chapter 296-841. Airborne contaminants. |
Section 296-841-20025. Permissible exposure limits (PELs).
Latest version.
- IMPORTANT:The following information applies to Table 3, Permissible Exposure Limits (PELs) for Airborne Contaminants.• Ppm refers to parts of vapor or gas per million parts of air by volume, at 25 degrees C and 760 mm Hg pressure.• Mg/m3 refers to milligrams of an airborne contaminant per cubic meter of air.• F/cc refers to fibers per cubic centimeter of air.• For a metal that is measured as the metal itself, only the CAS number for the metal is given. The CAS numbers for individual compounds of the metal are not provided. For more information about CAS registry numbers see the web site: http://www.cas.org.• Short-term exposure limits (STEL) pertain to fifteen-minute exposure periods, unless another time period is noted in Table 3.• An "X" in the "skin" column indicates the contaminant can be absorbed through the skin, either by airborne or direct contact.– Personal protective equipment (PPE) to prevent skin contact may be needed to minimize the risk for adverse health effects when employees are exposed to these chemicals.– Requirements for the use of gloves, coveralls, goggles, and other personal protective equipment can be found in WAC 296-800-160, Personal protective equipment (PPE).• Nuisance dusts (also known as inert dusts) are included in the Table 3 listing, particulates not otherwise regulated (PNOR).– The PNOR listing in Table 3 also applies to other particulate airborne contaminants for which a specific PEL is NOT listed unless the airborne contaminant is found to require a lower limit.• The respirable fraction of a particulate airborne contaminant is measured by sampling with a size-selector having the following characteristics:Table 3 "Permissible Exposure Limits (PELs) for Airborne Contaminants"
Rules
296-800-160,