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10 year 0.02557 <br /> 25 year 0.03448 <br /> 50 year 0.042199 <br /> 100 year 0.050916 <br /> Flow Frequency Return Periods for Mitigated. POC #1 <br /> Return Period Flow(cfs) <br /> 2 year 0.007352 <br /> 5 year 0.011104 <br /> !Y1111111!"9991!!irli:: <br /> ar0. 01421ear0.01897ear0.02317year0.02802amProtection DurationalPeaks for Predevelopeditigated. POC #1 <br /> Predevelopedgated0.010060.013060.012050.009050.007050.044060.016120.01414 0.018 0.007 <br /> 1958 0.012 0.006 <br /> 1959 0.012 0.006 <br /> 1960 0.011 0.006 <br /> 1961 0.031 0.012 <br /> 1962 0.010 0.005 <br /> 1963 0.018 0. 006 <br /> 1964 0.014 0.005 <br /> 1965 0. 011 0.006 <br /> 1966 0.006 0.006 <br /> 1967 0.012 0.006 <br /> 1968 0.015 0.006 <br /> 1969 0.049 0.006 <br /> 1970 0.009 0.006 <br /> 1971 0.015 0.015 <br /> 1972 0.010 0.006 <br /> 1973 0.010 0.007 <br /> 1974 0.023 0.007 <br /> 1975 0.009 0.005 <br /> 1976 0.009 0.006 <br /> 1977 0.007 0.006 <br /> 1978 0.009 0.005 <br /> 1979 0. 026 0.006 <br /> 1980 0.012 0.005 <br /> 1981 0. 008 0.005 <br /> 1982 0.012 0.012 <br /> 1983 0. 021 0.006 <br /> 1984 0.012 0.016 <br /> 1985 0.015 0.012 <br /> 1986 0.034 0.021 <br /> Insight Engineering Co. -Stormwater Site Plan 09/10/18 <br /> -24- <br />