An undeveloped site occupies a lot that is 850 by 250 feet. the top of the lot is 15 feet higher than the bottom. the town would like to develop the lot into a neighborhood business district. (a) calculate how much runoff the town would need to accommodate if they wish to plan for the100-year storm using the idf curve provided by isws bulletin 70 from 1989. (b) determine the revised runoff using the idf curve provided in isws bulletin 70 revised in 2019.