Question $13$

$10$ pts

The CT values for inactivation of E$.$ coll is given in the following table:

$\backslash$table$[[$Log removal,CT $($mg$/$L$.$min$)],[0\mathrm{.}5$ log$,0\mathrm{.}75],[1\mathrm{.}0$ log$,1\mathrm{.}40],[2\mathrm{.}0$ log$,2\mathrm{.}10],[3\mathrm{.}0$ log$,2\mathrm{.}95],[4\mathrm{.}0$ log$,3\mathrm{.}65]]$

Vhat is the required time for disinfection to achieve $99\mathrm{.}99\%$ removal if the concentratio sinfectant is $3\mathrm{.}5m\frac{g}{L}?$