A point source is discharged into an estuary having the following characteristics:

Dispersion coefficient $=105$ m$2/$day

Flow $=4105$ m$3/$day

Width $=110$ m

Depth $=3$ m

The pollutant settles $($settling velocity $=0\mathrm{.}11$ m$/$day$).$ What mass loading could be input

to this system under steady$-$state conditions if the allowable concentration at the outfall is

$10$ ppb$?$ Express your results in kg$/$day$.$ Assume complete lateral and vertical mixing at

the outfall.