A wastewater sample diluted at a $1$:$30$ ratio has an initial DO of $9\mathrm{.}0$ mg$/$L and a DO

of $5\mathrm{.}0$ mg$/$L after $5$ days. A seeded blank has an

initial DO of $8\mathrm{.}8$ mg$/$L and a DO

of $7\mathrm{.}9$ mg$/$L$.$ Calculate the BOD

$5$

of the wastewater, considering the impact of the

seeded control.