A 500 m 2 plot is with 90% proposed impervious cover. The rainfall intensity is 100mm/h. Duration of the 1:1 year rainfall event is 1.5 hours. The plan is to pass the storm runoff into a Bio retention pond before discharging to nearby lake. Design the area available for the pond. After testing the runoff, it is understood that a contact time of 24 hours is required. Assume a max ponding depth of 100mm, permeability of filter media is 150mm/h. If the required filter bed depth of a bio retention pond is 800mm. Design the intake fore bay design assuming settling velocity of the sediment in runoff is 0.1m/s.? Suspended solids in runoff is 100mg/L with sediment density 1600kg/m3 and rainfall frequency is 15 times per year. Cleaning frequency of intake is after 5 years.