Air Contaminant Tests Reveal the Following Concentrations Over an 8-Hr

question 55

Essay

Air contaminant tests reveal the following concentrations over an 8-hr shift.(All values in ppm):
$\begin{array}{|l|c|c|c|c|}\hline & \begin{array}{c}(\mathrm{PEL}=150) \\\text { Isobutyl } \\\text { acetate }\end{array} & \begin{array}{c}(\mathrm{PEL}=1000) \\\text { Ethyl } \\\text { Chloride }\end{array} & \begin{array}{c}(\mathrm{PEL}=300) \\\text { Cyclohexane }\end{array} & \begin{array}{c}\text { (PEL=25) } \\\text { Diethylamine }\end{array} \\\hline 8: 00-9: 00 \mathrm{am} & 15 & 400 & 200 & 20 \\\hline 9: 00-11: 00 \mathrm{am} & 10 & 200 & 100 & 10 \\\hline 11: 00-1: 00 \mathrm{pm} & 10 & 300 & 150 & 10 \\\hline 1: 00-4: 00 \mathrm{pm} & 5 & 100 & 50 & 5 \\\hline \hline\end{array}$ Show all calculations to justify your answers to the following:
a.Is the PEL for any individual substance exceeded?
b.Is the AL for any individual substance exceeded?
c.Is the PEL for the mixture exceeded?
d.Is the AL for the mixture exceeded?

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