$11($b$).$ A municipal solid waste incinerator has an emission factor of $9\mathrm{.}08kg$ particulate matter $($PM$)$ per ton of waste. Assume that the maximum two$-$hour permissible emission level is $0\mathrm{.}18\frac{g}{m^3}.$ If $2\mathrm{.}26m^3$ of flue gas are produced per $0\mathrm{.}45kg$ of waste combusted, determine the control equipment collection efficiency needed to meet the emission limit$.(5$ marks$)$