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Index Hall Replacement: 10th Street Parking Site Flow Control Calculations <br /> MITIGATED LAND USE <br /> ANALYSIS RESULTS <br /> Flow Frequency Return Periods for Predeveloped. POC #1 <br /> Return Period Flow(cfs) <br /> 2 year 0.139647 <br /> 5 year 0.185717 <br /> 10 year 0.218283 <br /> 25 year 0.261863 <br /> 50 year 0.296141 <br /> 100 year 0.332012 <br /> Flow Frequency Return Periods for Mitigated. POC #1 <br /> Return Period Flow(cfs) <br /> 2 year 0.092638 4 The mitigated 2-year,24-hour flow rate is 0.0926 <br /> 5 year 0.127725 cfs. This is a reduction of greater than 25%when <br /> 10 year 0.153223 <br /> 25 year 0.188096 compared with the Pre-developed flow rate. <br /> 50 year 0.216054 <br /> 100 year 0.245754 <br /> Yearly Peaks for Predeveloped and Mitigated. POC #1 <br /> Year Predeveloped Mitigated <br /> 1950 0.118 0.079 <br /> 1951 0.191 0.139 <br /> 1952 0.167 0.099 <br /> 1953 0.122 0.077 <br /> 1954 0.157 0.103 <br /> 1955 0.202 0.129 <br /> 1956 0.162 0.114 <br /> 1957 0.077 0.050 <br /> 1958 0.134 0.099 <br /> 1959 0.251 0.179 <br /> • <br /> 1960 0.129 0.080 <br /> 1961 0.112 0.077 <br /> 1962 0.322 0.239 <br /> 1963 0.141 0.102 <br /> 1964 0.207 0.156 <br /> 1965 0.097 0.064 <br /> 1966 0.114 0.068 <br /> 1967 0.115 0.070 <br /> 1968 0.332 0.201 <br /> 1969 0.173 0.117 <br /> 1970 0.233 0.179 <br /> 1971 0.114 0.074 <br /> 1972 0.158 0.110 <br /> 1973 0.255 0.186 <br /> 1974 0.153 0.102 <br /> 1975 0.174 0.115 <br /> 1976 0.142 0.097 <br /> 2 B-2 <br />