1) You are an industrial hygienist conducting personal sampling on a worker who is overseeing a production process involving use of acetone (Note: The Occupational Safety and Health Administration has established a Permissible Exposure Limit of 1000 parts per million (ppm) of acetone). You are able to measure the following exposures:700 ppm for 3 hours1300 ppm for 2 hours900 ppm for 3 hoursWhat is the calculated TWA? What would you tell plant management in terms of exposure to acetone and compliance with the PEL?2)Please solve the following problem, indicating your response on a Word document and submitting the document via File Upload.Using the following formula, solve the problem below, and show your work.TWA=CaTa+CbTb+ … +CnTn8TWA=Time-Weighted AverageCa=Concentration of contaminant during the sampling period “a”Ta=Time of sampling period “a”Cb=Concentration of contaminant during the sampling period “b”Tb=Time of sampling period “b”Cn=Concentration of contaminant during the sampling period “n”, where “n” is the last of a series of contaminantsTn=Time of sampling period “n”Note: All concentrations are in parts contaminant per million parts of air or milligrams of contaminant per cubic meter of air.Air Sampling Problem:You are an industrial hygienist that is conducting personal sampling on a worker who is overseeing a production process involving use of toluene (Note: The Occupational Safety and Health Administration has established a Permissible Exposure Limit of 200 parts per million (ppm)). You are able to measure the following exposures:500 ppm for 1 hour100 ppm for 4 hours225 ppm for 3 hoursWhat is the calculated TWA? What would you tell plant management in terms of exposure to toluene and compliance with the PEL?
