A Plant's Atmosphere Has the Following Concentrations of Contaminants for the Times

A plant's atmosphere has the following concentrations of contaminants for the times shown:PRIVATE
$\begin{array}{|l|r|r|r}\hline & {\text { Diethylamine }} &{\text { Phenol }} &{\text { Methyl alcohol }} \\ & {\text { (PEL 25 ppm) }} & \text { (PEL 5 ppm) } & \text { (PEL 200 ppm) } \\\hline \hline \text { 8:00 AM - 10:00 AM } & 4 \mathrm{ppm} & \text { none } & 10 \mathrm{ppm} \\\hline \text { 10:00 AM - 11:00 AM } & 6 \mathrm{ppm} & \text { none } & 30 \mathrm{ppm} \\\hline \text { 11:00 AM - noon } & 9 \mathrm{ppm} & 1 \mathrm{ppm} & 50 \mathrm{ppm} \\\hline \text { noon - 4:00 PM } & 12 \mathrm{ppm} & 3 \mathrm{ppm} & 80 \mathrm{ppm} \\\hline\end{array}$
Perform all calculations to determine whether action levels and PELs for the contaminants and their mixture are exceeded.SHOW YOUR CALCULATIONS.