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1 Perform the following calculation for air concentration. Formaldehyde: 4.0 mg/m3 = ____ ppm

2 Perform the following calculation for air concentration. Benzene: 3.0 ppm = ____ mg/m3

3 Perform the following calculation for air concentration. Sulfuric Acid: 2.5 mg/m3 = ____ ppm

4 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. 5 Your answer must be a minimum of 200 words in length.

6 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? Your answer must be a minimum of 200 words in length.

7 Define the lowest observed adverse effect level (LOAEL) and the no observed adverse effect level (NOAEL), and describe how they relate to the point of departure (POD). Describe how each of these are used to derive an OEL. Your answer must be a minimum of 200 words in length.

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