Question $6$

A landfill has started leaching TCE into the groundwater. A drinking water well is

located $5$ miles down gradient and there is some concern over TCE

contamination in the well.

The aquifer has the following properties:

foc$=0\mathrm{.}01$

porosity $=0\mathrm{.}39$

bulk density $=2\mathrm{.}60k\frac{g}{L}$

groundwater velocity $=0\mathrm{.}4\frac{m}{?}$ day

TCE has an oral slope factor of $0\mathrm{.}0061$ kg day $\frac{?}{mg}.$

How long will it take for TCE to reach the well?

$7887d$

$6524$ d

$5224d$

$2436$ d