Problems $7\mathrm{.}56$ and $7\mathrm{.}57($modified$),$ Masters and Ela, Introduction to Environmental Engineering and Science, $3$rd Ed$.$:

a$.$A single$-$story home with infiltration rate of $0\mathrm{.}44$ach has $275$m$2$of floor space and a total volume of $850$ m$3.$ If $0\mathrm{.}5$pCi$/$m$2-$s of radon is emitted from the soil and enters the house, where it undergoes decay$($reference Table $7\mathrm{.}14),$ estimate the steady$-$state indoor radon concentration.

Problems $7\mathrm{.}56$ and $7\mathrm{.}57($modified$),$ Masters and Ela, Introduction to Environmental

Engineering and Science, $3$rd Ed$.$:

a$.$ A single$-$story home with infiltration rate of $0\mathrm{.}44$ ach has $275m^2$ of floor space and a

total volume of $850m^3.$ If $0\mathrm{.}5pC\frac{i}{m^2}-s$ of radon is emitted from the soil and enters the

house, where it undergoes decay $($reference Table $7\mathrm{.}14),$ estimate the steady$-$state indoor

radon concentration.

b$.$ If the house were to have been built as a two$-$story house with $137\mathrm{.}5m^2$ on each floor and

the same total volume, what would be the estimated radon concentration?