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) 246 0.107 0.202 0.394 0.099 0.188 0.366 -0.007 -0.014 -0.027 252 0.109 0.205 0.399 0.102 0.191 0.371 -0.008 -0.014 -0.028 258 0.112 0.209 0.404 0.104 0.194 0.376 -0.008 -0.014 -0.028 264 0.114 0.212 0.410 0.106 0.197 0.382 -0.008 -0.015 -0.028 270 0.117 0.216 0.417 0.109 0.201 0.389 -0.008 -0.015 -0.028 276 0.119 0.219 0.423 0.111 0.204 0.395 -0.008 -0.015 -0.028 282 0.122 0.222 0.430 0.113 0.207 0.402 -0.008 -0.015 -0.028 288 0.124 0.225 0.436 0.115 0.209 0.408 -0.009 -0.016 -0.028 294 0.126 0.228 0.443 0.117 0.212 0.415 -0.009 -0.016 -0.028 300 0.129 0.231 0.449 0.120 0.215 0.422 -0.009 -0.016 -0.028 306 0.131 0.234 0.456 0.122 0.218 0.428 -0.009 -0.016 -0.028 312 0.133 0.237 0.462 0.124 0.221 0.434 -0.009 -0.016 -0.028 318 0.135 0.240 0.468 0.126 0.224 0.441 -0.009 -0.017 -0.027 324 0.137 0.243 0.475 0.128 0.226 0.447 -0.010 -0.017 -0.027 330 0.140 0.246 0.481 0.130 0.229 0.454 -0.010 -0.017 -0.027 336 0.142 0.249 0.487 0.132 0.232 0.460 -0.010 -0.017 -0.027 342 0.144 0.251 0.493 0.134 0.234 0.466 -0.010 -0.017 -0.027 348 0.146 0.254 0.499 0.136 0.237 0.472 -0.010 -0.018 -0.027 354 0.148 0.257 0.506 0.138 0.239 0.479 -0.010 -0.018 -0.027 360 0.150 0.260 0.512 0.140 0.242 0.485 -0.010 -0.018 -0.027 366 0.153 0.264 0.520 0.142 0.245 0.493 -0.011 -0.018

0.027 360 0.150 0.260 0.512 0.140 0.242 0.485 -0.010 -0.018 -0.027 366 0.153 0.264 0.520 0.142 0.245 0.493 -0.011 -0.018 -0.027 372 0.156 0.269 0.532 0.146 0.251 0.505 -0.011 -0.019 -0.027 378 0.161 0.277 0.547 0.150 0.257 0.520 -0.011 -0.019 -0.027 384 0.166 0.284 0.564 0.155 0.265 0.536 -0.012 -0.020 -0.028 390 0.171 0.292 0.579 0.159 0.272 0.551 -0.012 -0.020 -0.028 396 0.176 0.300 0.596 0.164 0.279 0.567 -0.012 -0.021 -0.028 402 0.181 0.309 0.612 0.168 0.288 0.583 -0.013 -0.021 -0.029 408 0.186 0.318 0.629 0.173 0.296 0.600 -0.013 -0.021 -0.029 414 0.191 0.327 0.646 0.178 0.305 0.617 -0.013 -0.022 -0.029 420 0.196 0.336 0.663 0.183 0.314 0.633 -0.014 -0.022 -0.030 426 0.201 0.346 0.680 0.187 0.323 0.651 -0.014 -0.022 -0.030 432 0.207 0.355 0.698 0.192 0.332 0.668 -0.014 -0.023 -0.030 438 0.212 0.365 0.715 0.197 0.342 0.685 -0.015 -0.023 -0.030 444 0.217 0.374 0.733 0.202 0.351 0.702 -0.015 -0.023 -0.030 450 0.222 0.384 0.750 0.207 0.360 0.720 -0.015 -0.023 -0.031 456 0.227 0.393 0.767 0.212 0.369 0.737 -0.016 -0.024 -0.031 462 0.233 0.403 0.785 0.216 0.379 0.754 -0.016 -0.024 -0.031 468 0.238 0.413 0.803 0.221 0.389 0.772 -0.016 -0.024 -0.031 474 0.243 0.423 0.821 0.226 0.398 0.790 -0.017 -0.024 -0.031 480 0.248 0.432 0.839 0.231 0.408 0.807 -0.017 -0.025 -0.031 486 0.254 0.443 0.858 0.236 0.418 0.826 -0.018 -0.025 -0.031 492 0.259 0.453 0.875 0.241 0.428 0.844 -0.018 -0.025 -0.031 498 0.264 0.463 0.893 0.246 0.437 0.862

-0.018 -0.025 -0.031 492 0.259 0.453 0.875 0.241 0.428 0.844 -0.018 -0.025 -0.031 498 0.264 0.463 0.893 0.246 0.437 0.862 -0.018 -0.025 -0.031 2 of 24