Example $9\mathrm{.}5$ A chimncy with a design stack height of $250m$ is emitting sulfur dioxide at a rate of $500\frac{g}{s}$ on a sunny day in June with moderate wind speed at the

stack altitude will be around $5-7\frac{m}{s}.$ Estimate the concentration of sulfur dioxide downwind for the following situations:

a$)$ Cso$2_{-}(1000,0,0,250)$

b$)$ Cso$2(1000,50,0,250)$

e$)$ Cso$2,(1000,50,20,250)$

d$)$ If Csos$(1000,y,0,250)$ is $100\frac{g}{m^3},$what is the value of $y$ in meters?