Determine the depth of packing and cross-sectional area for a countercurrent airstripping tower to reduce the trichloroethylene from 200g/l to 2g/l(99%removal). The design water flow rate is 76l/s, and the lowest operating temperature anticipated is 10C, based on groundwater temperature and cooling in the tower. Henry's law constant for trichloroethylene is 0.30 at 10C. The manufacturer of the proprietary random packing recommends a mass transfer coefficient of 0.017s1 based on pilot studies and an allowable pressure drop of 50N/m2m