QUESTION $3$: $[25$ MARKS$]$

A burning dump emits an estimated $3\frac{g}{s}$ of oxides of nitrogen. What is the

average concentration of nitrogen oxides from this source directly downwind

at a distance of $3km$ on an overcast night with a wind speed of $7\frac{m}{s}?$

Assume that this dump is a point ground$-$level source.Determine the allowable emission rate of dust fall from an air contamination source. Use the following data: Ground level particle fall rate, q$=1\mathrm{.}86\backslash$times $10^(-6)($g$)/($m$^(2))/$s Terminal settling velocity for $25\backslash$mu m quartz, v$=0\mathrm{.}03($m$)/($s$)$ Ground$-$level particle concentration, f$=($q$)/($v$)$ Mean wind velocity, u$=3\mathrm{.}8($m$)/($s$)$ Isotropic diffusion coefficient, C$^(2)=0\mathrm{.}01$ Stability parameter, n$=0\mathrm{.}25$ Effective stack heights, H$\_($e$)=10$m$,20$m$,40$m$,60$m $,$ and $80$m Horizontal distance from the stack to the nearest property line, x$=100$m$,200$m$,250$m$,300$m$,400$m$500$m $,$ and $1000$m Present all the values of the allowable emission rate for each horizontal distance and stack height in tabular format.