['Toxic and Hazardous Substances - OSHA']
['Air Contaminants']
07/24/2024
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Washington’s state requirements regarding air contaminants include a substantial amount of regulatory information beyond the federal requirements. Click the link(s) below to view the applicable requirements.
Citations
Washington:
WAC 296-62-135 Oxygen Deficient AtmospheresWAC 296-800-110 Employer responsibilities: Safe workplaceWAC 296-841 Airborne Contaminants
Federal: 29 CFR 1910.1000
A summary of the additional requirements includes the following:
- WAC 296-841-100 applies only if employees are exposed, or could be exposed, to an airborne hazard. These hazards are listed in WAC 296-841-100.
- WAC 296-841-20003 calls for employers to protect employees from potentially hazardous exposure during the exposure evaluation.
- Most of WAC 296-841-20005, Identify and Evaluate Respiratory Hazards, WAC 296-841-20010, Control Employee Exposures, and WAC 296-841-20020, Notify Employees, contain requirements that go beyond OSHA requirements. We have not summarized these requirements here.
- For work periods longer than 8-hours, the time weighted average needs to be determined using the eight continuous hours with the highest average concentration.
- Washington state’s Permissible Exposure Limits (PELs) for Airborne Contaminants Table in WAC 296-841-20005 contains substances with exposure limits that differ from federal OSHA exposure limits.
- Where there are no specific rules applicable to a particular chemical hazard:
- Control chemical agents in a manner that they will not present a hazard to your workers, and
- Protect workers from the hazard of contact with, or exposure to, chemical agents.
- Washington state considers pesticides to be chemical agents. As required by WAC 296-800-11040, employers must control them or provide protection to workers from exposure to pesticide hazards. Pesticide manufacturers supply precautionary statements in the information provided with the pesticide that tells employers how to protect their workers from these hazards.
- “Airborne chemical agent” means a dust, fume, gas, mist, or vapor, as described within the definition of “chemical agents (airborne or contact)”.
- If a lack of sufficient oxygen is probable, supply workers with and ensure workers use approved equipment OR provide a sufficient supply air that is safe and respirable prior to and during entry, according to WAC 296-62-135. Also, provide these workers with constant observation. Finally, test areas where oxygen content is unknown or may change, prior to and during entry.
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['Toxic and Hazardous Substances - OSHA']
['Air Contaminants']
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