$-$ A settling$-$column analysis is performed on a dilute suspension of discrete particles. Data collected from samples taken at $5-$ft depth are shown below. Find the overall removal if the overflow $($clarification rate$)$ of the basin is $0\mathrm{.}09$ fps$.$

$\backslash$begin$\{$tabular$\}\{|$c$|$c$|$c$|$c$|$c$|$c$|$c$|\}$

$\backslash$hline Time required to settle $\backslash (5\backslash$mathrm$\{$ft$\}(\backslash$mathrm$\{$min$\})\backslash )$ & $0\mathrm{.}7$ & $1\mathrm{.}2$ & $2\mathrm{.}3$ & $4\mathrm{.}6$ & $6\mathrm{.}3$ & $8\mathrm{.}8\backslash \backslash$

$\backslash$hline $\backslash$begin$\{$tabular$\}\{$c$\}$

Portion of particles with velocities $\backslash \backslash$

less than those indicated

$\backslash$end$\{$tabular$\}$ & $0\mathrm{.}58$ & $0\mathrm{.}49$ & $0\mathrm{.}34$ & $0\mathrm{.}16$ & $0\mathrm{.}07$ & $0\mathrm{.}03\backslash \backslash$

$\backslash$hline

$\backslash$end$\{$tabular$\}$