A particle suspension contains equal numbers of spherical sand particles (specific gravity 2.65) in each of the following particle diameters: 0.085 mm, 0.070 mm, 0.060 mm, 0.005 mm. Design a 2-m deep aerated grit chamber to treat 10,000 m/d of wastewater at 20C to completely remove the largest particle size and scour the finest particle. Assume of 0.04, fof 0.03, and air flow rate of 0.3 ft/min. ft of length. If the influent suspended solids (SS) concentration is 400 mg/l, what is the grit chamber effluent SS?? in