$($Question $1)$

A $60-$hectare $($hec$)$ drainage basin containing $40$hec net residential area with

average $5$ dwelling units per hec with $5$ residents, and $20$hec zoned

commercial area.

Take wastewater generation for

Residential $=225\frac{L}{?}$ capita$/$day

Commercial $=1500\frac{L}{?}$ hec$/$day

Peak infiltration $($I$)$ & inflow $($I$)$ allowance $=800\frac{L}{h}e\frac{c}{?}$ day

Peaking factor $(PF)=15\mathrm{.}05$ Q$-0\mathrm{.}167$

Required:

Determine the design flow for the sewer servicing this area