2025 12 19 Stormwater Report Rev 1

Existing Conditions Proposed Conditions Difference Time 2-Year 10-Year 100-Year 2-Year 10-Year 100-Year 2-Year 10-Year 100-Year (Min) (CFS) (CFS) (CFS) (CFS) (CFS) (CFS) (CFS) (CFS) (CFS) 762 2.528 4.091 7.612 2.491 4.059 7.588 -0.036 -0.032 -0.024 768 2.204 3.565 6.628 2.174 3.538 6.608 -0.031 -0.027 -0.020 774 1.958 3.165 5.880 1.932 3.141 5.862 -0.027 -0.024 -0.018 780 1.792 2.894 5.374 1.768 2.873 5.358 -0.024 -0.021 -0.016 786 1.624 2.622 4.866 1.603 2.603 4.852 -0.021 -0.019 -0.014 792 1.470 2.372 4.401 1.451 2.356 4.389 -0.019 -0.017 -0.012 798 1.346 2.170 4.025 1.329 2.155 4.014 -0.017 -0.015 -0.011 804 1.240 1.999 3.706 1.225 1.986 3.696 -0.016 -0.014 -0.010 810 1.144 1.844 3.417 1.130 1.831 3.408 -0.014 -0.012 -0.009 816 1.048 1.688 3.127 1.035 1.677 3.119 -0.013 -0.011 -0.008 822 0.965 1.554 2.879 0.953 1.544 2.871 -0.012 -0.010 -0.007 828 0.911 1.466 2.716 0.900 1.457 2.709 -0.011 -0.009 -0.007 834 0.875 1.409 2.609 0.865 1.400 2.602 -0.010 -0.009 -0.007 840 0.849 1.366 2.529 0.839 1.358 2.523 -0.010 -0.009 -0.006 846 0.823 1.324 2.450 0.813 1.316 2.444 -0.010 -0.008 -0.006 852 0.797 1.282 2.371 0.787 1.274 2.365 -0.009 -0.008 -0.006 858 0.771 1.239 2.293 0.762 1.232 2.287 -0.009 -0.008 -0.006 864 0.744 1.197 2.214 0.736 1.190 2.208 -0.009 -0.007 -0.005 870 0.718 1.154 2.134 0.710 1.147 2.129 -0.008 -0.007 -0.005 876 0.692 1.111 2.055 0.684 1.105 2.050 -0.008 -0.007 -0.005 882 0.665 1.069 1.976 0.658 1.062 1.971 -0.007 -0.006

0.005 876 0.692 1.111 2.055 0.684 1.105 2.050 -0.008 -0.007 -0.005 882 0.665 1.069 1.976 0.658 1.062 1.971 -0.007 -0.006 -0.005 888 0.639 1.026 1.897 0.632 1.020 1.893 -0.007 -0.006 -0.004 894 0.612 0.984 1.818 0.605 0.978 1.814 -0.007 -0.006 -0.004 900 0.586 0.941 1.738 0.579 0.935 1.734 -0.006 -0.006 -0.004 906 0.559 0.898 1.659 0.553 0.893 1.655 -0.006 -0.005 -0.004 912 0.536 0.861 1.591 0.530 0.856 1.587 -0.006 -0.005 -0.004 918 0.521 0.836 1.545 0.515 0.832 1.542 -0.006 -0.005 -0.003 924 0.511 0.821 1.516 0.506 0.816 1.512 -0.006 -0.005 -0.003 930 0.504 0.809 1.494 0.499 0.804 1.491 -0.005 -0.005 -0.003 936 0.496 0.797 1.471 0.491 0.792 1.468 -0.005 -0.005 -0.003 942 0.489 0.785 1.449 0.484 0.780 1.446 -0.005 -0.004 -0.003 948 0.482 0.773 1.427 0.476 0.768 1.424 -0.005 -0.004 -0.003 954 0.474 0.760 1.403 0.469 0.756 1.400 -0.005 -0.004 -0.003 960 0.466 0.748 1.381 0.461 0.744 1.378 -0.005 -0.004 -0.003 966 0.459 0.737 1.360 0.454 0.733 1.357 -0.005 -0.004 -0.003 972 0.452 0.725 1.338 0.447 0.721 1.335 -0.005 -0.004 -0.003 978 0.444 0.712 1.315 0.440 0.709 1.312 -0.005 -0.004 -0.003 984 0.437 0.701 1.293 0.432 0.697 1.290 -0.005 -0.004 -0.003 990 0.429 0.688 1.270 0.425 0.685 1.267 -0.004 -0.004 -0.003 996 0.422 0.676 1.247 0.417 0.672 1.245 -0.004 -0.004 -0.003 1002 0.414 0.664 1.225 0.410 0.661 1.223 -0.004 -0.004 -0.003 1008 0.407 0.652 1.204 0.403 0.649 1.201 -0.004 -0.004 -0.002 1014 0.400 0.640 1.181 0.395 0.637 1.179

-0.004 -0.004 -0.003 1008 0.407 0.652 1.204 0.403 0.649 1.201 -0.004 -0.004 -0.002 1014 0.400 0.640 1.181 0.395 0.637 1.179 -0.004 -0.003 -0.002 16 of 24