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The PEL is designed for situations (like working in an oil refinery) where some level of toxic exposure is essentially unavoidable because of the nature of&nbsp; the workplace.&nbsp; It is not an appropriate standard for the general public. Environmental standards, which are designed to protect the general public, are at <EM;much lower</em; <EM;levels</em; than occupational PELs. Also, the whole PEL methodology is widely viewed as outdated and likely to set levels that are too high <EM;even</em; for occupational settings.

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