(Answered) 1 discuss the similarities and differences that exist

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1. Discuss the similarities and differences that exist between the three basic types of occupational exposure limits (OELs). Describe how each type of OEL is used to control occupational exposures, and provide at least one specific chemical for which each type of OEL has been established. (200 words)

2. Describe how hazard notations are used to derive OELs, including the additional hazard notations included by the Occupational Safety and Health Administration (OSHA). How would these notations be used in industrial hygiene practice? (200 words)

3. Discuss the common elements used to derive occupational exposure limits (OELs). Provide your opinion as to which of the elements is the most important. (200 words)

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