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WPO201900062 Calculations 2022-08-31
Southwood Redevelopment — Village 1 ALBEMARLE COUNTY, VIRGINIA SITE PLAN AMENDMENT #2, & WPO AMENDMENT #2 DESIGN CALCULATIONS & NARRATIVE OCTOBER 30, 2019 REVISED: JULY 309 2021 REVISED AUGUST 24, 2022 •00000 • TIMMONS GROUP YOUR VISION ACHIEVED THROUGH OURS. Prepared by: Clint Shittlett, PE Timmons Group 608 Preston Avenue, Suite 200 Charlottesville, VA 22903 434.327.1690 CLINT W. S F LET Lic. N . 54380 8/24/2022 Table of Contents Section Title 1. Project Narrative 2. LD-204 Inlet Calculations 3. LD-229 Pipe Calculations 4. LD-347 Hydraulic Grade Line Analysis 5. LD-269 Culvert Calculations 6. Outlet Protection Sizing 7. Virginia Runoff Reduction Method Worksheet Summary a. Site Summary b. Bioretention A c. Bioretention B 8. Analysis Point 1 & Bioretention Routing Calculations 9. Analysis Point 2 Routing Calculations Project Narrative: This project includes the construction three roads, a residential community, and associated utilities and landscaping. The limits of disturbance is 15.23 acres. Water Quality: The current site is undeveloped. 23.39 acres was analyzed for water quality, including 16.97 acres of disturbed area. The total TP load reduction required is 9.86 lbs/year. There will be 6.14 lbs/year to be treated via Bioretention 1, and 2.38 lbs/year to be treated via Bioretention 2 and 1.25 lbs/yr of required nutrient credits that have been purchased from a DEQ-Approved Nutrient Credit Bank in Accordance with VA code 62.1-44.15:35. An additional 0.09 lbs/yr of required nutrient credits will be purchased from a DEQ- Approved Nutrient Credit Bank in Accordance with VA code 62.1-44.15:35. Water Ouantity At Analysis Point 1, the proposed stormwater conveyance system outfall enters a floodplain and discharges runoff into an established channel with less than 1% of the contributing drainage area, in accordance with 9VAC25-870-66 section C.3. Bioretention facilities 1 & 2 have been analyzed to ensure adequate storage and routing. No further stormwater quantity measures have been provided as part of this development. Energy balance requirements will be met through the use of two bioretention basins and one dry pond. Flood protection requirements for the 10-year storm will be met by releasing the stormwater into the mapped floodplain, in accordance with 9VAC25-670-66, Section C.3.c. At Analysis Point 2, a proposed culvert carries runoff beneath Horizon Road and releases it into the existing ditch downstream from the limits of grading. Energy balance requirements will be met through a reduction in impervious land cover. Flood protection requirements will be met by reducing the 10-year storm peak flow rate, in accordaince with 9VAC25-870-66, section C.1. FORM LD 204 STORMWATER INLET COMPUTATIONS SHEET 1 OF 9 ROUTE PROJECT SouthwoodVillagel DESIGNER: CG CHECKED: DATE 12/28/2021 UNITS:NGLISH INLET F ¢ r[ Z mfYK+t ,u� O �awu,uU� oy��c❑vvJ, Zr_, ' ."� °p�N, F.. S�V i EF OOKg5W^Z , �maudq N W�pFp Zip�„i- �Z W Z z uU °' Se Inlets Only w °vo�f' o❑v so S $ °' ^iV roi. 106 DI-3B 6.000 0.048 0.90 0.0432 O'RIGHT 0.019 0.25 0.0048 0.048 4 0.192 0 0.192 0.0250 0.0208 1.312 2.000 L5244 0.0833 4.0048 1.000 3.50 0.1458 0.1666 3.613 6.000 L661 1.000 0.192 0.000 1.311 108 D1-2B 10 0.037 0.90 0.0333 O'RIGHT 0.017 0.25 0.0043 0.038 4 0.152 0 0.152 0.0200 0.0208 1.253 2.000 L5962 0.0833 4.0048 1.000 3.50 0.1458 0.1666 3.063 6.000 3.265 1.000 0.152 0.000 L253 110 DI-2B 10 0.024 0.90 0.0216 URIGHT 0.007 0.25 0.0018 0.023 4 0.092 0 0.092 0.0496 0.0208 0.876 2.000 2.2831 0.0833 4.0048 1.000 3.50 0.1458 0.1666 3.257 6.000 3.070 1.000 0.092 0.000 0.876 112 DI-3B 6A00 0.147 090 0.1323 O'RIGHT 0.037 0.25 0.0093 0.142 4 0.568 0 0.568 0.0496 0.0208 1.732 2.000 1.1547 0.0833 4.0048 1.000 3.50 0.1458 0.1666 6.997 6.000 0.858 0.970 0.551 0.017 1.731 112A DI-3B 6.000 0.093 0.90 0.0837 VRIGHT 0.037 0.25 0.0093 0.093 4 0.372 0 0.372 0.0100 0.0208 1.995 2.000 L0025 0.0833 4.0048 1.000 3.50 0.1458 0.1666 3.623 6.000 1.656 1.000 0.372 0.000 1.994 114 DI-3B 6.000 0.058 0.90 0.0522 VRIGHT 0.026 0.25 0.0065 0.059 4 0.236 0 0.236 0.0450 0.0208 1.270 2.000 L5748 0.0833 4.0048 1.000 3.50 0.1458 0.1666 4.699 6.000 1277 1.000 0.236 0.000 1.269 116 DI-3B 6.000 0.098 0.90 0.0882 O'RIGHT 0.029 0.25 0.0073 0.095 4 0.38 0 0.380 0.4000 0.0208 2.000 1.9841 0.0833 4.0048 1.000 3.50 0.1458 0.1666 11.055 6.000 0.543 0.755 0.287 0.093 1.008 127A DI-3B 6.000 0.119 0.90 0.1071 J2.766 O'RIGHT 0.051 0.25 0.0128 0.12 4 048 0 0.480 0.0100 0.02082.000 0.7231 0.0833 4.0048 0.994 3.50 0.1458 0.1658 4.045 6.000 1 483 1.000 0.480 0.000 2.191 132 DI-2B 8 0.047 0.90 0.0423 0.000'RIGH 0.018 0.25 0.0045 0.047 4 0.188 0 0.188 0.0100 0.0208 L545 2.000 L2945 0.0833 4.0048 1.000 3.50 0.1458 0.1666 2.720 6.000 2.941 1.000 0.188 0.000 1.545 134 DI-2A 2 0.132 0.90 0.1188 INLETSOFT BY ENSOFTEC DATE: 12/28/2021 FORM LD 204 STORMWATER INLET COMPUTATIONS SHEET 2 OF 9 ROUTE PROJECT SouthwoodVillagel DESIGNER: CG CHECKED: DATE 12/28/2021 UNITS:NGLISH INLET F ^ 'yW a r[ S E U �fj+toff, O v. .� 'Z E,- F .. 3.� F E KZ F; '3 a m - N �, p '� w y F a u a' z Yu C 3 u F. Se Inlets Only [v m W a F v o 9 2 p i y O'RIGHT 0. 144 0.25 0.036 0.155 4 0.62 0 0.620 0.0289 0.0208 1.980 2.000 1.0101 0.0833 4.0048 1.000 3.50 0.1458 0.1666 6.173 2.000 0.324 0.506 0.314 0.306 1.980 136 DI-2B 10 0.070 0.90 0.063 VRIGHT 0.029 0.25 0.0073 0.07 4 0.28 0 0.280 0.0289 0.0208 1.471 2.000 1.3596 0.0833 4.0048 1.000 3.50 0.1458 0.1666 4.421 6.000 2.262 1.000 0.280 0.000 1.470 136A D1-2B 8 0.048 0.90 0.0432 O'RIGHT 0.016 0.25 0.004 0.047 4 0.188 0 0.188 0.0100 0.0208 1.545 2.000 12945 0.0833 4.0048 1.000 3.50 0.1458 0.1666 2.720 6.000 2.941 L000 0.188 0.000 1.545 138 DI-3B 6.000 0.032 0.90 0.0288 VRIGHT 0.011 0.25 0.0028 0.032 4 0.128 0 0.128 0.0289 0.0208 1.097 2.000 1.8232 0.0833 4.0048 1.000 3.50 0.1458 0.1666 3.182 6.000 1.886 1.000 0.128 0.000 1.096 140 DI-1 2.000 0.212 0.90 0.1908 VRIGHT 0.180 0.25 0.045 0.355 0.20 0.071 0.307 4 1.228 0 1.228 0.0100 0.3333 1.311 2.000 1.5256 0.3333 1 1.000 2.00 0.0833 0.4166 3.452 2.000 0.579 1.000 1.228 0.000 5.243 142 DI-1 2.000 0.885 0.90 0.7965 Buk/Lt. 0.0001RIGH 0.189 0.35 0.0662 Buk/Lt. L796 0.20 0.3592 Buk/Lt. L222 4 4.888 0 0.0500 0.1800 2.392 2.000 0.8361 0.1800 1 2.00 Buk/Lt. 0 4 0 0 Ahead/Rt. 4.888 0.0500 2.000 2 4.998 5.032 1.440 7.032 2.330 Weir Flow 144 D1-2B 10 0.063 0.90 0.0567 0.000'RIGH 0.021 0.35 0.0074 0.064 4 0.256 0 0.256 0.0289 0.0208 L422 2.000 L4065 0.0833 4.0048 1.000 3.50 0.1458 0.1666 4.258 6.000 2.349 L000 0.256 0.000 L421 144A DI-3B 6.000 0.097 0.90 0.0873 O'RIGHT 0.036 0.25 0.009 0.096 4 0.384 0 0.384 0.0100 0.0208 2.076 2.000 0.9634 0.0833 4.0048 1.000 3.50 0.1458 0.1666 3.672 6.000 1.634 1.000 0.384 0.000 2.018 144B DI-213 8 0.069 0.90 0.0621 0.009RIGH 0.036 0.25 0.009 0.071 4 0.284 0 0.284 0.0100 0.0208 1.803 2.000 1.1093 0.0833 4.0048 1.000 3.50 0.1458 0.1666 3.235 6.000 2.473 1.000 0.284 0.000 1.803 INLETSOFT BY ENSOFTEC DATE: 12/28/2021 FORM LD 204 STORMWATER INLET COMPUTATIONS SHEET 3 OF 9 ROUTE PROJECT SouthwoodVillagel DESIGNER: CG CHECKED: DATE 12/28/2021 UNITS:NGLISH INLET FZ ¢ r[ Z Z O uU c❑J r_' N" V EF O W uq �Z _ice W Z z uU °' Se Inlets Only Z °vo�f' o❑v so S $ °' ^i � V y 146 DI-3B 6.000 0.143 0.90 0.1287 0.0001RIGH 0.034 0.25 0.0085 0.137 4 0.548 0 0.548 0.0289 0.0208 L891 2000. 1.0576 0.0833 4.0048 1.000 3.50 0.1458 0. 1666 5.861 6.000 1.024 1.000 0.548 0.000 1.890 148 DI-3B 6.000 0.055 0.90 0.0495 O'RIGHT 0.018 0.25 0.0045 0.054 4 0.216 0 0.216 0.0289 0.0208 1.334 2.000 L4993 0.0833 4.0048 1.000 3.50 0.1458 0.1666 3.964 6.000 1.514 1.000 0.216 0.000 1.334 150 DI-3B 6.000 0.104 0.90 0.0936 0.000'RIGH 0.064 0.25 0.016 0.11 4 044 0 0.440 0.0100 0.0208 2.494 2.000 0.8019 0.0833 4.0048 0.998 3.50 0.1458 0.1663 3.892 6.000 L542 1.000 0A40 0.000 2.123 152 DI-3B 6.000 0.099 0.90 0.0891 VRIGHT 0.033 0.25 0.0083 0.097 4 0.388 0 0.388 0.0289 0.0208 1.662 2.000 1.2034 0.0833 4.0048 1.000 3.50 0.1458 0.1666 5.070 6.000 1.183 1.000 0.388 0.000 1.661 154 DI-2B 70 0.192 0.90 0.1728 WRIGHT 0.065 0.25 0.0163 0.189 4 0.756 0 0.756 0.0500 0.0208 1.925 2.000 1.039 0.0833 4.0048 1.000 3.50 0.1458 0.1666 7.909 66.000 8.851 1.000 0.756 0.000 1.924 154A DI-3B 6.000 0.062 0.90 0.0558 O'RIGHT 0.021 0.25 0.0053 0.061 4 0.244 0 0.244 0.0100 0.0208 1.704 2.000 1.1737 0.0833 4.0048 1.000 3.50 0.1458 0.1666 3.035 6.000 1.977 1.000 0.244 0.000 1.703 154B DI-2B 8 0.057 0.90 0.0513 WRIGHT 0.023 0.25 0.0058 0.057 4 0.228 0 0.228 0.0100 0.0208 1.661 2.000 1.2041 0.0833 4.0048 1.000 3.50 0.1458 0.1666 2.950 6.000 2.712 1.000 0.228 0.000 1.660 156 DI-3B 6.000 0.078 0.90 0.0702 0.0091IGH 0.029 0.25 0.0073 0.077 4 0.308 0 0.308 0.0500 0.0208 L375 2.000 L4545 0.0833 4.0048 1.000 3.50 0.1458 0.1666 5.424 6.000 1.106 1.000 0.308 0.000 1.375 160 DI-3B 6A00 0.119 0.90 0.1071 0.000'RIGH 0.040 0.25 0.01 0.117 4 0.468 0 0.468 0.0500 0.0208 1.609 2.000 1.243 0.0833 4.0048 1.000 3.50 0.1458 0.1666 6.466 6.000 0.928 0.991 0.464 0.004 1.608 INLETSOFT BY ENSOFTEC DATE: 12/28/2021 FORM LD 204 STORMWATER INLET COMPUTATIONS SHEET 4 OF 9 ROUTE PROJECT SouthwoodVillagel DESIGNER: CG CHECKED: DATE 12/28/2021 UNITS:NGLISH INLET z F �J` ^�,� 'yI a O S ¢ u ¢ u r[ E E Z `i U Z O � ru K v. � au W uU .� y, 'Z�i E,- c❑J r_' .� F N" .. 3 .� F V E KZ F; Or+. '3 a uq m - N �, p '� �Z w y -�� F a W u a' Z z Yu C uOR U 3 u F. °' Se Inleft On ly KK [v m W a � F v o❑v o S $ 9 2 °' p i y 162 D1-2B 8 0.042 0.90 0.0378 0.000RIGH 0.014 0.25 0.0035 0.041 4 0.164 0 O. 164 0.0100 0.0208 1468 2.000 L3624 0.0833 4.0048 1.000 3.50 0.1458 0.1666 2.568 6.000 3.115 L000 0.164 0.000 1468 164 DI-3B 6.000 0.057 0.90 0.0513 0.000'RIGH 0.016 0.25 0.004 0 055 4 022 0 0.220 0.0390 0.0200 1.270 2000. 1.5748 0 0833 4.165 1.000 3.52 0.1466 0.1666 4.371 6.000 1.373 1.000 0.220 0.000 L270 166 DI-3B 6.000 0.016 0.90 0.0144 0.0001RIGH 0.004 0.25 0.001 0.015 4 0.06 0 0.060 0.0200 0.0200 0.885 2.000 2.2599 0.0833 4.165 1.000 3.52 0.1466 0.1666 2.073 6.000 2.894 1.000 0.060 0.000 0.884 168 D1-211 8 0.014 0.90 0.0126 0.000'RIG 0.003 0.25 0.0008 0.013 4 0.052 0 0.052 0.0100 0.0208 0.955 2.000 2.0942 0.0833 4.0048 1.000 3.50 0.1458 0.1666 1.585 6.000 5.047 L000 0.052 0.000 0.954 170 D1-211 8 0.102 0.90 0.0918 0.000'RIGH 0.062 0.25 0.0155 0.107 4 0.428 0 0.428 0.0100 0.0208 2.409 2.000 0.8302 0.0833 4.0048 0.999 3.50 0.1458 0.1665 3.845 6.000 2.081 1.000 0.428 0.000 2.101 172 DI-3B 6.000 0.053 0.90 0.0477 VRIGHT 0.016 0.25 0.004 0.052 4 0.208 0 0.208 0.0131 0.0200 1.526 2.000 L3106 0.0833 4.165 1.000 3.52 0.1466 0.1666 3.078 6.000 1.949 1.000 0.208 0.000 1.525 172A DI-313 6.000 0.119 0.90 0.1071 O'RIGHT 0.051 0.25 0.0128 0.12 4 0.48 0 0.480 0.0100 0.0208 2.766 2.000 0.7231 0.0833 4.0048 0.994 3.50 0.1458 0.1658 4.045 6.000 1.483 1.000 0.480 0.000 2.191 202A D1-211 8 0.050 0.90 0.045 0.000'RIGH 0.012 0.25 0.003 0.048 4 0.192 0 0.192 0.0100 0.0208 1.557 2000. L2845 0.0833 4.0048 1.000 3.50 0.1458 0.1666 2.744 6.000 2.915 1.000 0.192 0.000 1.557 204 D1-211 IO 0.052 0.90 0.0468 O'RIGHT 0.020 0.25 0.005 0.052 4 0.208 0 0.208 0.0250 0.0208 L352 2.000 L4793 0.0833 4.0048 1.000 3.50 0.1458 0.1666 3.736 6.000 2.677 1.000 0.208 0.000 L351 206 DI-311 6.000 0.106 0.90 0.0954 INLETSOFT BY ENSOFTEC DATE: 12/28/2021 FORM LD 204 STORMWATER INLET COMPUTATIONS SHEET 5 OF 9 ROUTE PROJECT SouthwoodVillagel DESIGNER: CG CHECKED: DATE 12/28/2021 UNITS:NGLISH INLET F r[ O E, E z Se Inlets Only ate^ � �f' so m xo •.� o ^iF . r� V F O'RIGHT 0.027 0.25 0.0068 0.102 4 0.408 0 0.408 0.0250 0.0208 1.740 2.000 1.1494 0.0833 4.0048 1.000 3.50 0.1458 0.1666 4.958 6.000 L210 1.000 0.408 0.000 1.739 208 DI-2B 10 0.110 0.90 0.099 VRIGHT 0.031 0.25 0.0078 O. 107 4 0.428 0 0.428 0.0250 0.0208 1.771 2.000 1.1293 0.0833 4.0048 1.000 3.50 0.1458 0.1666 5.059 6.000 1.977 1.000 0.428 0.000 1.771 208A DI-3B 6.000 0.128 0.90 0.1152 O'RIGHT 0.064 0.25 0.016 0.131 4 0.524 0 0.524 0.0100 0.0208 3.043 2.000 0.6572 0.0833 4.0048 0.988 3.50 0.1458 0.1648 4.211 6.000 1.425 1.000 0.524 0.000 2.260 208B D1-2B 8 0.049 0.90 0.0441 VRIGHT 0.014 0.25 0.0035 0.048 4 0.192 0 0.192 0.0100 0.0208 1.557 2.000 1.2845 0.0833 4.0048 1.000 3.50 0.1458 0.1666 2.744 6.000 2.915 1.000 0.192 0.000 1.557 210 DI-3B 6.000 0.059 0.90 0.0531 VRIGHT 0.027 0.25 0.0068 0.06 4 0.24 0 0.240 0.0289 0.0208 1.388 2.000 1.4409 0.0833 4.0048 1.000 3.50 0.1458 0.1666 4.144 6.000 1.448 1.000 0.240 0.000 1.387 210A DI-3B 6.000 0.028 0.90 0.0252 VRIGHT 0.043 0.25 0.0108 0.036 4 0.144 0 0.144 0.0100 0.0208 1.398 2.000 14306 0.0833 4.0048 1.000 3.50 0.1458 0.1666 2.432 6.000 2.467 1.000 0.144 0.000 1.398 210B DI-3B 2.000 0.024 0.90 0.0216 VRIGHT 0.006 0.25 0.0015 0.023 4 0.092 0 0.092 0.0100 0.0208 1.182 2.000 1.692 0.0833 4.0048 1.000 3.50 0.1458 0.1666 2.015 2.000 0.993 1.000 0.092 0.000 1.182 212 DI-3B 6.000 0.026 0.90 0.0234 0.000'RIGH 0.006 0.25 0.0015 0.025 4 0.1 0 0.100 0.0289 0.0208 1.000 2.000 2 0.0833 4.0048 1.000 3.50 0.1458 0.1666 2.869 6.000 2.091 1.000 0.100 0.000 1.000 214 D1-2A 2 0.044 0.90 0.0396 0.000'RIGH 0.016 0.25 0.004 0.044 4 0.176 0 0.176 0.0200 0.0208 L324 2.000 L5106 0.0833 4.0048 1.000 3.50 0.1458 0.1666 3.257 2.000 0.614 0.820 0.144 0.032 L323 216 DI-3B 6.000 0.117 0.90 0.1053 VRIGHT 0.027 0.25 0.0068 INLETSOFT BY ENSOFTEC DATE: 12/28/2021 FORM LD 204 STORMWATER INLET COMPUTATIONS SHEET 6 OF 9 ROUTE PROJECT SouthwoodVillagel DESIGNER: CG CHECKED: DATE 12/28/2021 UNITS:NGLISH INLET F a ^ m a S ai.i a w r[ S E E � U `i �fj+toff, O Yu v. au �� .� y, 'Z F �� .. � 3.� �`. E 3 g5 KZ �� rn a N F� p �'x �w �TF F .a rn wy u chi z O Yu s 3 •. �. Se Inlets Only ate^ � m W a y zF of v �o CEi .Fw. o c m zo •.� o dU ^. q F a.. F 0.112 4 0.448 0 0A48 0.0200 0.0208 1.879 2000. 1.0644 0.0833 4.0048 1.000 3.50 0.1458 0. 1666 4.823 6.000 1244 1.000 0.448 0.000 L878 218 DI-1 1.000 0.071 0.90 0.0639 0.000RIGH 0.083 0.25 0.0208 0.042 0.20 0.0084 0.093 4 0.372 0 0.372 0.0700 0.0208 1.386 2.000 1.443 0.0833 4.0048 1.000 3.50 0.1458 0.1666 6.495 1.000 0.154 1.000 0.372 0.000 1.385 220 DI-3B 6.000 0.060 0.90 0.054 O'RIGHT 0.012 0.25 0.003 0.057 4 0.228 0 0.228 0.0200 0.0208 1.459 2.000 L3708 0.0833 4.0048 1.000 3.50 0.1458 0.1666 3.631 6.000 1.652 1.000 0.228 0.000 1458 222 D1-2B 10 0.036 0.90 0.0324 WRIGHT 0.016 0.25 0.004 0.036 4 0.144 0 0.144 0.0300 0.0208 1.138 2.000 1.7575 0.0833 4.0048 1.000 3.50 0.1458 0.1666 3.381 6.000 2.958 1.000 0.144 0.000 1.138 224 D1-2B 8 0.031 0.90 0.0279 VRIGHT 0.027 0.25 0.0068 0.035 4 0.14 0 0.140 0.0100 0.0208 1.384 2.000 1.4451 0.0833 4.0048 1.000 3.50 0.1458 0.1666 2.403 6.000 3.329 1.000 0.140 0.000 1.383 224A DI-3B 6.000 0.130 0.90 0.117 O'RIGHT 0.044 0.25 0.011 0.128 4 0.512 0 0.512 0.0100 0.0208 2.970 2.000 0.6734 0.0833 4.0048 0.990 3.50 0.1458 0.1651 4.166 6.000 1.440 1.000 0.512 0.000 2.241 224B DI-3B 6.000 0.130 0.90 0.117 O'RIGHT 0.127 0.25 0.0318 0.149 4 0.596 0 0.596 0.0100 0.0208 3.453 2.000 0.5792 0.0833 4.0048 0.974 3.50 0.1458 0.1628 4.478 6.000 1.340 1.000 0.596 0.000 2.362 226 DI-3B 6.000 0.092 0.90 0.0828 0.000'RIGH 0.025 0.25 0.0063 0.089 4 0.356 0 0.356 0.0389 0.0208 1.522 2.000 1.3141 0.0833 4.0048 1.000 3.50 0.1458 0.1666 5.346 6.000 1.122 1.000 0.356 0.000 1.521 226A D1-2B 10 0.138 0.90 0.1242 O'RIGHT 0.070 0.25 0.0175 0.142 4 0.568 0.0389 0.0208 L813 2.000 L1031 0.0833 4.0048 1.000 3.50 0.1458 0.1666 6.505 6.000 L537 1.000 0.568 0.000 L812 *00�568 228 DI-2B 6 0.048 0.90 0.0432 WRIGHT 0.015 0.25 0.0038 INLETSOFT BY ENSOFTEC DATE: 12/28/2021 FORM LD 204 STORMWATER INLET COMPUTATIONS SHEET 7 OF 9 ROUTE PROJECT SouthwoodVillagel DESIGNER: CG CHECKED: DATE 12/28/2021 UNITS:NGLISH INLET F z¢ r[ Z U O U V U E, p k U wa O 3 E U w 3.. ug O V ; OO ..i�'� ¢� Z rn z u a q Se Inlets Only ate^ � ¢zi �f' o a a q so m z o •.� o, o ^iF . a.. y F 0.047 4 0.188 0 0.188 0.0100 0.0208 1.545 2000. 1.2945 0.0833 4.0048 1.000 3.50 0.1458 0. 1666 2.720 4.000 2206 1.000 0.188 0.000 L545 230 DI-2B 6 0.096 0.90 0.0864 O'RIGHT 0.030 0.25 0.0075 0.053 0.20 0.0106 0.105 4 0.42 0 0.420 0.0100 0.0208 2.351 2.000 0.8507 0.0833 4.0048 0.999 3.50 0.1458 0.1665 3.814 4.000 L573 1.000 0A20 0.000 2.087 232 DI-3B 6.000 0.233 0.90 0.2097 O'RIGHT 0.037 0.25 0.0093 0.219 4 0.876 0 0.876 0.0100 0.0208 4.704 2.000 0.4252 0.0833 4.0048 0.906 3.50 0.1458 0.1529 5.467 6.000 1.097 1.000 0.876 0.000 2.674 234 DI-1 2.000 0.063 0.90 0.0567 Buk/Lt. 0.000'RIGH 0.014 0.25 0.0035 Buk/Lt. 0.160 0.20 0.032 Buk/Lt, 0.092 4 0.368 0 Bnk/Lt. 0 4 0 0 Ahead/Rt. 0.368 0.0100 2.000 2 0.368 1.384 T> 8.0 ft 236 DI-1 2.000 0.461 0.90 0.4149 Buk/Lt. 0.0001RIGH 0.035 0.25 0.0088 Buk/Lt. 0.724 0.20 0.1448 Bwk/Lt. 0.568 4 2.272 0 Buk/Lt. 0 4 0 0 Ahead/Rt. 2.272 0.001 2.000 2 2.272 4.657 T> 8.0 ft 240 DI-1 1.000 0.052 0.90 0.0468 Buk/Lt. 0.0001RIGH 0.049 0.25 0.0123 Buk/Lt. 0.059 4 0.236 0 Buk/Lt. 0 4 0 0 Ahead/Rt. 0.236 0.001 1.000 t 0.236 1.604 T> 8.0 ft 242 DI-3B 6.000 0.199 0.90 0.1791 O'RIGHT 0.060 0.25 0.015 0.016 0.20 0.0032 0.197 4 0.788 0 0.788 0.0100 0.0208 4.356 2.000 0.4591 0.0833 4.0048 0.928 3.50 0.1458 0.1561 5.165 6.000 1.162 1.000 0.788 0.000 2.587 302 DI-3C 6.000 0.382 0.90 0.3438 Buk/Lt. 0.000'RIGH 0.063 0.25 0.0158 Buk/Lt. 0.36 4 1.44 0 0.0200 0.0208 5.209 2.000 0.384 0.0833 4.0048 3.50 Buk/Lt. 0 4 0 0 Ahead/Rt. INLETSOFT BY ENSOFTEC DATE: 12/28/2021 FORM LD 204 STORMWATER INLET COMPUTATIONS SHEET 8 OF 9 ROUTE PROJECT SouthwoodVillagel DESIGNER: CG CHECKED: DATE 12/28/2021 UNITS:NGLISH INLET Zp '-r �J` ^ 'yW G O K u u r[ E Z U Z O K v. au w �� V U .� y, 'Z �v F� V r_' ��" w V .. 3.� V 17 3� KZ pr+' uq N p Ouz 'iw F W u Z z O Yu uu 3 °' Se Inlets Only d K w m Z W a F v o❑v o S$ n vo. 1.440 0.0200 6 1440 L943 0.166 0.333 0.4985 3.943 7.782 Weir Flow 404 DI-1 2.000 0.343 0.90 0.3087 Back/Lt. 0.0001RIGH 0.247 0.25 0.0618 Back/Lt. 0.37 4 1.48 0 Back/Lt. 0 4 0 0 Ahead/Rt. 1.480 0.001 2.000 2 1480 3.499 T> 8.0 ft 404A DI-1 2.000 0.070 0.90 0.063 Back/Lt, 0.0001RIGH 0.079 0.25 0.0198 Back/Lt. 0.083 4 0.332 0 Back/Lt, 0 4 0 0 Ahead/Rt. 0.332 0.0100 2.000 2 0.332 1 292 T> 8.0 ft 406 DI-1 2.000 0,122 0.90 0.1098 Back/Lt. 0.0001RIGH 0.089 0.25 0.0223 Back/Lt. 0.132 4 0.528 0 Back/Lt, 0 4 0 0 Ahead/Rt. 0.528 0.001 2.000 2 0.528 1.760 T> 8.0 ft 408 D1-1 2.000 0.054 0.90 0.0486 0.00011IGH 0.053 0.25 0.0133 0.062 4 0.248 0 0.248 0.0500 0.0208 1.268 2.000 1.5773 0.0833 4.0048 1.000 3.50 0.1458 0.1666 4.952 2.000 0.404 1.000 0.248 0.000 1.268 412 DI-1 2.000 0.065 0.90 0.0585 Back/Lt. 0.0001RIGH 0.078 0.25 0.0195 Back/Lt. 0.078 4 0.312 0 0.001 0.0208 5.102 2.000 0.392 0.0833 4.0048 3.50 Back/Lt. 0 4 0 0 Ahead/Rt. 0.312 0.001 2.000 2 0.312 0.907 0.166 4.907 3.636 Weir Flow 412A D1-3B 6.000 0.083 0.90 0.0747 URIGHT 0.024 0.25 0.006 0.081 4 0.324 0 0.324 0.0100 0.0208 1.895 2.000 1.0554 0.0833 4.0048 1.000 3.50 0.1458 0.1666 3.419 6.000 1.755 1.000 0.324 0.000 1.894 414 D1-3B 6.000 0.054 0.90 0.0486 O'RIGHT 0.024 0.25 0.006 0.055 4 0.22 0 0.220 0.0400 0.0208 L264 2.000 L5823 0.0833 4.0048 1.000 3.50 0.1458 0.1666 4.404 6.000 L362 1.000 0.220 0.000 L264 416 D1-3B 6.000 0.031 0.90 0.0279 URIGHT 0.043 0.25 0.0108 0.039 4 0.156 0 0.156 0.0200 0.0208 1.265 2.000 1.581 0.0833 4.0048 1.000 3.50 0.1458 0.1666 3.096 6.000 1.938 1.000 0.156 0.000 1.265 INLETSOFT BY ENSOFTEC DATE: 12/28/2021 FORM LD 204 STORMWATER INLET COMPUTATIONS SHEET 9OF 9 ROUTE PROJECT SouthwoodVillagel DESIGNER: CG CHECKED: DATE 12/28/2021 UNITS:NGLISH INLET p O�JW` GS ¢ u U¢ uF r[ SE Z U`iU Z mfYK+t ,u� �awu,uU� oy��c❑vvJ, Zr_, ' ."� °p�N, F.. S�V i EF OOKg5W^Z , maudq N W�pFp Zip�„i- QµW^u-�,�w` ZZ F mP W v �wu Z z OO WYC u uU uz3 F °' Se Inlets Only Kwmz Wa F w °vo o❑v o S $ 9 2 °' m@p)^iV y 416A DI-3B 6.000 0.009 0.90 0.0081 ORIGHT 0.004 0.25 0.001 0.009 4 0.036 0 0.036 0.0100 0.0208 0.832 2.000 2.4038 0.0833 4.0048 1.000 3.50 0.1458 0.1666 L359 6.000 4415 L000 0.036 0.000 0.832 418 DI-3B 6.000 0.063 0.90 0.0567 ORIGHT 0.016 0.25 0.004 0.015 0.20 0.003 0.064 4 0.256 0 0.256 0.0496 0.0208 1.285 2.000 L5564 0.0833 4.0048 1.000 3.50 0.1458 0.1666 5.007 6.000 L198 1.000 0.256 0.000 1.285 420 DI-3B 6.000 0.066 0.90 0.0594 ORIGHT 0.041 0.25 0.0103 0.07 4 0.28 0 0.280 0.0400 0.0208 1.384 2.000 1.4451 0.0833 4.0048 1.000 3.50 0.1458 0.1666 4.874 6.000 1.231 1.000 0.280 0.000 1.383 506 DI-3B 6.000 0.024 0.90 0.0216 ORIGHT 0.010 0.25 0.0025 0.024 4 0.096 0 0.096 0.0131 0.0200 1.142 2.000 1.7513 0.0833 4.165 1.000 3.52 0.1466 0.1666 2.224 6.000 2.698 1.000 0.096 0.000 1.142 508 DI-3C 6.000 0.063 0.90 0.0567 Bwk/Lt. 0.009RIGH 0.016 0.25 0.004 l3wk/Lt. 0.061 4 0.244 0 Bwk/Lt, 0.320 0.61 0.1952 Ahead/Rt. 0.195 4 0.78 0 0.0131 0.0200 3.952 2.000 0.5061 0.0833 4.165 3.52 Ahead/Rt. 1.024 0.0131 6 t 024 1.547 0.160 0.333 0A8048 3.547 6.448 Weir Flow 600 D1-1 2.000 2.712 0.25 0.678 Buk/Lt. 0.0001RIGH 0.020 0.20 0.004 Buk/Lt. 0.682 4 2.728 0 0.0100 0.3333 1.768 2.000 1.1312 0.3333 1 2.00 Buk/Lt. 0 4 0 0 Ahead/Rt. 2.728 0.0100 2.000 2 2.728 3.852 2.666 5.852 0.963 Weir Flow INLETSOFT BY ENSOFTEC DATE: 12/28/2021 LD-229 STORM SEWER DESIGN COMPUTATIONS STORM FREQUENCY 10 PROJECT: Southwood Redevelopment -Village 1 LOCATION: COUNTY: Charlottesville Designed by: CG Checked by: UNITS ENGLISH PIPE NO. FROM POINT TO POINT DRAIN. AREA "A" Acre (3) RUNOFF COFER "C' (4) CA INLET TIME Minutes (7) RAIN FALL him (8) RUNOFF INVERT ELEVATIONS LENGTH of Pipe Ft. (12) SLOPE Ft./Ft. (13) SIZE (Dia. Or Span/Rise) In. (14) SHAPE Number of Pipes Capacity CFS (15) Friction Slope Ft./Ft. NORMAL FLOW FLOW TIME REMARKS (18) INCRE- MENT (5) ACCUM- ULATED (6) Lateral CFS Total Q CFS 9) UPPER END (10) LOWER END (11) Depth of Flow, do Ft. Area of Floe. An Sg1t Hm It. Vn Ft/Sec (16) En Ft. INCRE- MENT Minutes (17) ACCUMU -LATED Minutes (17) REFERENCE (1) STA. REFERENCE (2) STA. 107 106 108 0.07 0,72 0.05 0.05 5.00 6.54 0.00 0.31 426.26 425.55 71,00 0.01000 15 Circular 1 7.00 0.00000 0.18 0.11 0.11 2.88 0.31 0,41 5.41 109 110 108 0.03 0,74 0.02 0.41 5.82 6.28 0-00 2.65 432.10 427.94 9151 OA4497 15 Circular 1 14.84 0.00150 036 0.29 021 9.14 1.66 0,17 5.99 Ill 112 112A 0.18 0.77 0.14 0.30 5.41 6.41 0.00 1.91 440.84 438.26 43.07 0.05990 15 Circular 1 17,13 0.00080 0.28 0.21 0,17 9.22 1.60 0.08 5.49 111A 112A 110 0.13 0.72 0.09 0.39 5.51 6.38 0.00 2.51 434.75 432.20 127.73 0.01996 15 Circular 1 9.89 0.00130 0.43 0.37 0.24 6.72 1.13 0.32 5.82 113 114 112 0.08 0.70 0.06 0.15 5.21 6.47 0.00 1.00 445.12 440.94 83,63 0.04998 15 Circular 1 15.65 0.00020 0.21 0.14 0.13 7.15 1.01 0.20 5.41 115 116 114 0.13 0.75 0.10 0.10 5.00 6.54 0.00 0.62 448.30 445.22 76,90 0.04005 15 Circular 1 14.01 0.00010 0.18 0.11 0.11 5.74 0.69 0.22 5.22 119 108 120 0.05 0.70 0.04 0.50 5.99 6.23 1 0.00 3.19 425.45 424.53 61,43 0.01498 18 Circular 1 13.93 0.00080 0.49 0.50 027 6.39 1.12 0.16 6.15 127 128 126 0.00 0.00 4.77 8.60 4.26 0.00 26.98 419.00 418.00 24,95 0.04008 30 Circular 1 88,96 0.00380 0.94 1.70 0.51 15.89 4.86 0.03 8.62 129 130 128 0,00 0.00 4.77 8.53 5.58 0.00 26.98 430.38 427.88 62.56 0.03996 30 Circular 1 1 88.83 0.00380 0.95 1.70 0.51 15.87 4.86 0.07 8.60 131 136 130 0.10 0.71 0.07 4.77 8.48 5.59 0.00 26.98 437.19 436.73 30.94 0.01487 30 Circular 1 54.19 0.00380 1.25 2.45 0.62 11.03 3.14 0.05 8.53 133 134 136A 028 0.56 0.16 0.16 5.00 6.54 0.00 1.01 438,57 437.90 44.59 0.01503 15 Circular 1 8.58 0.00020 0.29 0.22 0.17 4.70 0.63 0.16 5.16 135 136A 136 0.06 0.73 0.05 0.25 5.30 6.44 0.00 1.61 437.80 437.29 51.16 0.00997 15 Circular 1 6.99 0.00050 0.41 0.35 0.23 4.62 0.74 0.18 5.49 135A 132 136A 0.07 0.72 0.05 0.05 5.00 5.04 0.00 0.24 438,87 438.38 48,27 0.01015 15 Circular 1 7.05 0.00000 0.16 0.09 0.10 2.67 0.27 0.30 5.30 137 138 136 0.04 0.74 0.03 1.56 5.28 6A5 0.00 10.20 439.15 438.60 55,20 0.00996 24 Circular 1 24.46 0.00180 0.90 1.37 047 7.43 1.76 0.12 5.40 139 140 138 0.75 0.41 0.31 1.53 5.10 6.51 0.00 9.99 440.05 439.25 79.43 0.01007 24 Circular 1 24.59 0.00170 0.89 1.35 046 7.42 1.74 0.18 5.28 141 142 140 2.87 0.43 1.22 1.22 5.00 6.54 0,00 7.99 442.51 440.60 63.87 0.029901 15 Circular 1 1 12.10 0.013601 0.74 0.76 0.35 10.54 2.47 0.10 5.10 143 144 136 0.08 0.76 0.06 2.72 7.99 5.70 0,00 15.76 445.05 442.33 181.26 0.01501 24 Circular 1 30.03 0.00430 1.03 1.63 0.51 9.67 2.48 0.31 8.30 143A 144A 144B 0.13 0.72 0.10 0.10 5.00 5.04 0,00 0.48 443.64 443.31 32.70 0.01009 15 Circular 1 7.03 0.00000 0.22 0.15 0.14 3.29 0.39 0.17 5.17 143B 144B 136 OA1 0.68 0.07 2.89 8.30 4.31 0.00 16.48 442.23 440,62 107.07 0.01504 24 Circular 1 30.06 0.00470 1.06 1.68 0.52 9.79 2.54 0.18 8.48 145 146 144 OA8 0.77 0,14 0.14 5.00 6.54 0.00 0.90 44835 44Z59 38,24 0.01987 15 Circular 1 9.87 0.00020 0.25 0.18 0.15 5.00 0.64 0.13 5.13 147 148 144 0.07 0.74 0,05 2.52 7.74 5.76 0.00 14.61 446.35 445A5 119.92 0.01001 24 Circular 1 24.52 0.00370 1.11 1.79 0.53 8.15 2,14 0.25 7.99 149 1150 148 0.17 0,66 0.11 2.47 7.58 5.80 0.00 14.30 453.66 451.62 101.95 0.02001 24 Circular 1 34,67 0.00350 0.90 1.36 0.46 10.51 2.61 0.16 7.74 151 152 150 0.13 0.74 0.10 0.10 5.00 6.54 0.00 0.64 454.16 453.76 1 40.05 0.00999 15 1 Circular 1 7.00 10.000101 0.25 0.18 0.15 3.55 0.45 0.19 5.19 153 154C 1150 0.00 0.00 2.14 7.21 4.53 0.00 12.49 461.98 460.85 45,25 0.02497 24 Circular 1 38.73 0.00270 0.78 1.14 OA2 10.99 2.66 0.07 7.28 153A 154A 154B 0.08 0.74 0.06 0.06 5.00 5.04 0.00 0.31 459.99 459.61 37,79 0.01006 15 Circular 1 7.02 0.00000 0.18 0.11 0.11 2.87 0.31 0.22 5.22 153B 154B 150 0.08 0.71 0.06 2.26 7.28 4.51 0.00 13.02 458.87 455.13 187.03 0.02000 24 Circular 1 34.66 0.00290 0.85 1.27 045 10.25 2.48 0.30 7.58 153C 154 154C 0A I 0.72 0.08 2.06 7.12 4.55 0.00 12.14 463.69 462.26 57.06 0.02506 24 Circular 1 38.80 0.00260 0.77 1.11 OA2 10.92 2.62 0.09 7.21 155 156 154 0A I 0.72 0.08 0.08 5.00 6.54 0.00 0.50 464.55 463.79 37.80 0.02011 15 Circular 1 9.92 0.00010 0.19 0.12 0.12 4.24 0.47 0,15 5.15 157 158 154 0.00 0.00 1.91 6.88 4.60 0.00 11.45 469.69 465.85 153.79 0.02497 24 Circular 1 38,73 0.00230 0.75 1.07 0A1 10.73 2.53 0,24 7.12 159 160 158 0.16 0.74 0.12 0.12 5.00 6.54 0.00 0.77 472.60 472.22 1 37.79 0.01006 15 Circular I 1 1 7,02 0.000101 0.28 1 0.20 0.17 3,75 0.50 0.17 5.17 161 162A 158 0.00 0.00 1.79 6.73 4.63 0.00 10.91 475.23 473.49 87.11 0.01997 24 Circular 1 34.63 0.00210 0.77 1.12 0.42 9.77 2.25 0.15 6.88 161A 162 162A 0.06 0.73 0.04 1.79 6.52 4.68 0.00 10.91 479.28 476.74 126.88 0.02002 24 Circular 1 34.68 0.00210 0.77 1.12 042 9.77 1 2.25 0.22 6.73 163 164 162 0.07 0.75 0.06 0.06 5.00 6.54 0.00 0.36 483.35 482.94 41.32 0.00992 15 Circular 1 6.97 0.00000 0.19 0.12 0.12 2.99 0.33 0.23 5.23 165 166 162 0.02 0.75 0.02 1.70 6.33 6.14 0,00 10.46 480.25 479.36 87,43 0.01018 24 Circular 1 24.73 0.00190 0.91 1.39 047 7.54 1.79 0.19 6.52 167 168 166 0.02 0.77 0.01 1.68 6.23 6.16 0,00 10.37 480.77 480.35 42.31 0.00993 24 Circular 1 2442 0.00190 0.91 1.39 047 7.46 1.77 0,10 6.33 169 1170A 168 0.00 0.00 0.28 5.66 4.88 000 1.36 482.90 481.40 149.53 0.01003 18 Circular 1 11.40 10.00010 0.35 0.31 0.21 4.34 0.64 0.57 6.23 169A 170 1 1170A 0.16 1 0.65 1 0.11 1 0.11 1 5.00 5.04 1 0.00 1 0.54 484.50 1 483.56 1 94A2 0.00999 15 1 Circular I 1 1 7.00 10.000101 0.24 0.16 0.14 3.38 0.41 0.46 5.46 171 172 1 170 1 1 0.07 1 0.75 1 0.05 1 0.05 1 5.00 6.54 1 0.00 1 0.34 484.61 1 483.71 1 90,18 0.00998 15 1 Circular I 1 1 6.99 0.0000, 0.19 0.12 0.12 2.95 0.32 0.51 5.51 LD-229 STORM SEWER DESIGN COMPUTATIONS STORM FREQUENCY 10 PROJECT: Southwood Redevelopment -Village 1 LOCATION: COUNTY: Charlottesville Designed by: CG Checked by: UNITS ENGLISH PIPE NO. FROM POINT TO POINT DRAIN. AREA "A" Acre (3) RUNOFF COFER "C' (4) CA INLET TIME Minutes (7) RAIN FALL him (8) RUNOFF INVERT ELEVATIONS LENGTH of Pipe Ft. (12) SLOPE Ft./Ft. (13) SIZE (Dia. Or Span/Rise) In. (14) SHAPE Number of Pipes Capacity CFS (15) Friction Slope Ft./Ft. NORMAL FLOW FLOW TIME REMARKS (18) INCRE- MENT (5) ACCUM- ULATED (6) Lateral CFS Total CFS (9) UPPER END (10) LOWER END (11) Depth of Flow, do Ft. Area of Flow, An SgFt Hun Ft. Vn Ft/Sec (16) En Ft. INCRE- MENT Minutes (17) ACCUMU -LATED Minutes (17) REFERENCE (1) STA. REFERENCE (2) STA. 171A 172A 170A 0.17 0.71 0.12 0.17 5.51 4.91 0.00 0.93 483.36 483.00 35.28 0.01020 15 Circular 1 7.07 0.00020 0.31 0.23 0.18 3.99 0.55 0.15 5.66 201 202 200 0.00 0.00 2.78 6.52 4.68 0.00 28.68 414.90 413.95 15.83 0.06001 24 Circular 1 60.04 0.01430 0.97 1.52 049 18.89 6.52 0.01 6.53 203 202A 204 0.06 0.77 0.05 0.05 5.00 6.54 0.00 0.31 429.47 428.32 57.56 0.01998 15 Circular 1 9.89 0.00000 0.15 0.09 0.10 3.68 0.36 0.26 5.26 203A 204 204A 0.07 0.72 0.05 2.78 6.43 6.11 0.00 28.68 421.93 420.72 30.42 0.03978 24 Circular 1 48.88 0.01430 1.10 1.77 0.53 16.18 5.17 0.03 6.46 203B 204A 202 0.00 0.00 2.78 6.46 6.10 0.00 28.68 419.53 415.36 69.57 0.05994 24 Circular 1 60.00 0.01430 0.97 1.52 0.49 18.88 6.51 0.06 6.52 205 206 204 0.13 0.74 0.09 0.09 5.10 6.51 0.00 14.72 423.05 422.43 30.82 0.02012 18 Circular 1 16.14 0.01740 1.13 1.42 045 10.35 2.79 0.05 5.15 205A 120 206 0.00 0.00 0.00 5.00 0.00 0.00 1 14.11 424.43 423.15 64.00 0.02000 18 Circular 1 16.09 0.01600 1.09 1.37 045 10.27 1 2.73 0.10 5.10 207 208 208B 0.14 0.76 0.11 2.40 6.28 6.15 0.00 15.05 430.79 430.08 35.74 0.01987 24 Circular 1 34.55 0.00390 0.92 1.42 047 10.62 2.67 0.06 6.34 207A 208A 208B 0.19 0.69 0.13 0.13 5.00 5.04 0.00 0.67 430.79 430.08 35.52 0.01999 18 Circular 1 16.09 0.00000 0.21 0.15 0.13 4.50 0.52 0.13 5.13 207B 208B 204 0.06 0.76 0.05 2.58 6.34 4.72 0.00 15.90 429.98 428.82 1 58.09 0.01997 24 1 Circular I 1 34.63 0.00440 0.95 1 1.47 OAS 10.79 2.76 0.09 6.43 209 210 210B 0.09 0.70 0.06 2.24 6.02 6.23 0.00 14.15 434.35 433.23 55.90 0.02004 24 Circular 1 34.69 0.00350 0.89 1.35 0.46 10.48 2.60 0.09 6.11 209A 210A 210B 0.06 0.44 0.03 0.03 5.00 5.04 0.00 0.14 434.29 433.97 32.00 0.01000 15 Circular 1 7.00 0.00000 0.12 0.06 0.08 2.25 0.20 0.24 5.24 209B 210B 208 0.03 0.77 0.02 2.29 6.11 4.77 0.00 14.39 433.13 430.96 108.73 0.01996 24 Circular 1 34.62 0.00360 0.90 1.37 047 10.51 2.62 0.17 6.28 211 212 210 0.03 0.78 0.03 2.18 5.97 6.24 0.00 13.78 435.09 434A5 32.04 0.01998 24 Circular 1 34.64 0.00330 0.88 1.33 046 10.40 2.56 0.05 6.02 213 214 212 0.06 0.73 0.04 2.16 5.90 6.26 0.00 13.63 436.01 435.20 40.45 0.02002 24 Circular 1 34.68 0.00320 0.87 1.31 046 10.38 2.54 0.07 5.97 215 216 214 0.12 0.76 0.09 0.18 5.04 6.53 0.00 1.19 436.72 436.11 30.60 0.01993 12 Circular 1 5.45 0.00100 0.32 0.21 0.18 5.56 0.80 0.09 5.14 217 218 216 0.20 0.47 0.09 0.09 5.00 6.54 0.00 0.61 438.90 438.17 16.12 0.04529 12 Circular 1 8.21 0.00030 0.18 0.10 0.11 6.13 0.77 0.04 5.04 219 220 214 0.07 0.79 0.06 1.93 5.78 6.30 0.00 12.21 438.40 436.32 83.40 0.02494 24 Circular 1 38.70 0.00260 0.77 1.12 0.42 10.92 2.62 0.13 5.90 221 222 220 0.05 0.72 0.04 1.88 5.71 6.32 0.00 11.85 438.84 438.53 30.71 0.01009 24 Circular 1 24.62 0.00240 0.98 1.53 0.49 7.76 1.91 0.07 5.78 223 224 224B 0.06 0.61 0.04 0.53 5A2 4.93 0.00 2.96 445.31 442.37 98.00 0.03000 15 Circular 1 12.12 0.00190 0.42 0.36 0.24 8.16 1.46 0.20 5.62 223A 224A 224B 0.17 0.74 0.13 0.13 5.00 5.04 0.00 0.65 44128 440.98 29.79 0.01007 15 Circular 1 7.02 0.00010 026 0.18 0.15 3.57 0.45 0.14 5.14 223B 1224B 222 0.26 0.57 0.15 0.81 5.62 4.89 0.00 3.95 440.88 440.06 40.95 0.02002 15 Circular 1 9.90 0.00330 0.55 0.52 0.29 7.62 1.45 0.09 5.71 225 226 226A 0.12 0.76 0.09 0.09 5.00 6.54 0.00 0.58 447.30 446.70 29.79 0.02014 15 Circular 1 9.93 0.00010 0.21 0.13 0.13 4.43 0.51 0.11 5.11 225A 226A 224 0.20 0.68 0.14 0.23 5.11 6.51 0.00 1.47 446.56 445.41 57.42 0.02003 15 Circular 1 1 9.90 10.00050 0.33 0.25 0.19 5.79 0.85 0.17 5.28 227 228 222 0.06 0.77 0.04 1.03 5.45 6.40 0.00 6.68 440.78 440.08 34.83 0.02010 18 Circular 1 16.13 0.00360 0.67 0.77 0.35 8.70 1.85 0.07 5.52 229 230 228 0.18 0.58 0.10 0.98 5.35 6.43 0.00 6.40 441.86 440.86 49.76 0.02010 18 Circular 1 16.13 0.00330 0.66 0.74 0.34 8.60 1.81 0.10 5.45 231 232 230 0.27 0.81 0.22 0.88 5.32 6.44 0.00 5.73 442.77 442.42 17.71 0.01976 15 Circular 1 9.84 0.00700 0.69 0.69 0.33 8.32 1.76 0.04 5.35 233 234 232 0.24 0.39 0.09 0.66 5.13 6.50 0.00 4.31 444.61 442.87 86.87 0.02003 15 Circular 1 9.90 0.00400 0.58 0.55 0.30 7.79 1.52 0.19 5.32 235 1236 234 1 1.22 0.47 0.57 0.57 5.00 6.54 0.00 3.72 445.71 444.71 56.94 0.01756 15 Circular 1 9.27 0.00290 0.55 0.52 0.29 7.14 1.34 0.13 5.13 237 1238 224 0.00 0.00 0.27 5.25 4.98 0.00 1.44 446.65 445A5 59.59 0.02014 15 Circular 1 9.93 0.00040 0.32 0.25 0.19 5.76 0.84 0.17 5.42 239 240 238 0.10 0.66 0.07 0.07 5.00 6.54 0.00 0.44 447.20 446.75 1 22.26 0.02022 15 1 Circular 1 1 9.95 0.00000 0.18 0.11 0.11 4.07 0.44 0.09 5.09 241 242 238 0.28 0.74 0.21 0.21 5.00 6.54 0.00 1.34 450.77 449.09 83.86 0.02003 15 Circular 1 9.90 0.00040 0.31 0.24 0.18 5.64 0.80 0.25 5.25 301 302 300 0.45 0.81 0.36 0.36 5.00 6.54 0.00 2.36 431.01 430.91 9.50 0.01053 15 Circular 1 7.18 0.00120 0.49 0.45 0.27 5.24 0.92 0.03 5.03 401 402 400 0.00 0.00 1.04 6.27 4.73 0.00 5.37 431.21 430.91 38.92 0.00771 18 Circular 1 9.99 0.00230 0.78 0.93 0.39 5.76 1.30 0.11 6.38 403 404 404A 0.59 0.63 0.37 0.37 5.00 6.54 0.00 2.42 432.35 431.60 106.66 0.00703 15 Circular 1 5.87 0.00120 0.56 0.53 0.29 4.55 0.88 0.39 5.39 403A 404A 402 0.15 0.56 0.08 0.45 5.39 4.94 0.00 2.83 431.50 431.31 26.75 0.00710 15 Circular 1 5.90 0.00170 0.61 0.60 0.31 4.76 0.96 0.09 5.48 405 1406 402 0.21 0.63 0.13 0.59 6.25 6.16 000 3.69 432.37 432.07 10.05 0.02985 15 Circular 1 12.09 0.00290 0.47 0.43 0.26 8.65 1.64 0.02 6.27 407 408 406 0.11 0.58 0.06 0.46 5.91 6.26 000 2.88 438.52 432.47 172.89 0.03499 15 Circular 1 1109 0.00180 0.40 0.34 0.22 8.55 1.53 034 6.25 LD-229 STORM SEWER DESIGN COMPUTATIONS STORM FREQUENCY 10 PROJECT: Southwood Redevelopment -Village 1 LOCATION: COUNTY: Charlottesville Designed by: CG Checked by: UNITS ENGLISH PIPE NO. FROM POINT TO POINT DRAIN. AREA "A" Acre (3) RUNOFF COFER "C' (4) CA INLET TIME Minutes (7) RAIN FALL In/Hr (8) RUNOFF INVERT ELEVATIONS LENGTH of Pipe Ft. (12) SLOPE Ft./Ft. (13) SIZE (Dia. Or Span/Riw) In. (14) SHAPE Number of Pipes Capacity CFS (15) Friction Slope Ft./Ft. NORMAL FLOW FLOW TIME REMARKS (18) INCRE- MENT (5) ACCUM- ULATED (6) Lateral CFS Total CFS 9) UPPER END (10) LOWER END (11) Depth of Flow, do Ft. Area of Flow, An SgFt Hm Ft, Vn Ft/Sec (16) En Ft. INCRE- MENT Minutes (17) ACCUMU -LATED Minutes (17) REFERENCE (1) STA. REFERENCE (2) STA. 409 410 408 0.00 0.00 0.40 5.81 6.29 0.00 2.49 439.72 438.95 38.46 0.02002 15 Circular 1 9.90 0.00130 0.43 0.37 0.24 6.72 1.13 0.10 5.91 411 412 410 0.14 0.55 0.08 0.21 5.24 6.47 0.00 1.38 440.95 439.82 56.58 0.01997 15 Circular 1 9.89 0.00040 0.32 0.24 0.19 5.68 0.82 0.17 5.40 411A 412A 412 0.11 0.76 0.08 0.08 5.00 5.04 0.00 0.41 442.25 441.31 47,12 0.01995 15 Circular 1 9.88 0.00000 0.17 0.10 0.11 3.97 0.42 0.20 5.20 413 414 412 0.08 0.71 0.06 0.06 5.00 6.54 0.00 0.36 441.79 44L05 36.82 0.02010 15 Circular 1 9.92 0.00000 0.16 0.09 0.10 3.83 0.39 0.16 5.16 415 416B 410 0.00 0.00 0.18 5.71 4.86 0.00 1.11 446.38 444.00 47.62 0.04998 15 Circular 1 15.65 0.00030 0.23 0.15 0.14 7.37 1.07 0.11 5.81 417 418 416 0.09 0.68 0.06 0.13 5.17 6.49 0.00 0.87 451.86 451.43 43.16 0.00996 15 Circular 1 6.98 0.00020 0.30 0.23 0.18 3.89 0.53 0.19 1 5.36 417A 416 416A 0.07 0.53 0.04 0.17 5.36 1 4.95 1 0.00 1.07 451.33 45L01 32.38 0.00988 15 Circular 1 6.96 0.00020 0.33 0.26 0.19 1 4.10 0.59 0.13 5.49 417B 416A 416B 0.01 0.69 0.01 0.18 5.49 4.92 0.00 1.11 450.91 450.37 53.95 0.01001 15 Circular 1 7.00 0.00030 0.34 0.27 0.20 4.17 0.61 0.22 5.71 419 420 418 0.11 0.65 0.07 0.07 5.00 6.54 0.00 0.46 452.30 451.96 33.27 0.01022 15 Circular 1 7.08 0.00000 0.22 0.14 0.13 3.25 0.38 0.17 5.17 501A 500A 500 0.00 0.00 0.00 5.00 0.00 8.23 444.26 443.25 50.56 0.01998 18 Circular 1 14.85 0.00640 0.80 0.96 0.39 8.62 1.95 0.10 5.10 505 506 504 0.03 0.71 0.02 0.28 5.18 5.00 0.00 6.67 479.55 479.00 54.57 0.01008 24 Circular 1 2231 0.00090 0.74 1.06 0.41 6.28 1.36 0.15 5.33 507 508 506 0.40 0.64 0.26 0.26 5.04 5.03 0.00 6.55 480.16 479.65 51.80 0.00985 24 Circular 1 22.45 0.00090 0.74 1.06 0A0 620 1.34 0.14 5.18 509 510 508 0.00 0.00 0.00 5.00 0.00 0.00 5.26 483.83 483.44 19.58 0.01992 24 Circular 1 31.93 0.00060 0.55 0.70 0.32 7.51 1.42 0.04 5.04 601 600 168 1.55 0.90 1.39 1.39 5.00 6.54 0.00 9.10 482.21 480.96 62.63 0.01996 24 Circular 1 34.62 0.00140 0.70 0.98 0.39 9.29 2.04 0.11 5.11 LD-347 PROJECT: Southwood Redevelopment - Village 1 DESIGNED BY: CG HYDRAULIC GRADE LINE ANALYSIS INCIDENCE PROBABILITY 10 Year Checked: INLET OR JUNCTION STA. INVERT EL. OUTFLOW PIPE DEPTH OF FLOW OUTFLOW PIPE OUTLET WATER SURFACE ELEV. DIA. PIPE Do (In/mm) DESIGN DISCH. Qo (CFS/CMS) LENGTH PIPE Lo (Ft/M) FRICTION SLOPE, Sfo (FT/FT) (M/M) FRICTION LOSSTContr). Hf (Ft/M) JUNCTION LOSS SURFACE FLOW Adj. Ht 1.3 Ht (Ft/M) Inlet Shaping? Y/N 0.5 Ht (Ft/M) FINAL H (Ft/M) Inlet Water Surface Elevation Top of MH Top of Inlet Elev. APPROX. Adjustment? Vi Vi'2/2g Hi (Expn) 0.35'MAX. (Vi2/2g) SKEW Angle K Bend H (Ft/M) Sum HL (Ft/M) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 16 17 18 19 126 420.000 128 418.000 2.50 420.000 30 26.983 24.95 0.00385 0.096 15.888 0.980 15.870 3.911 1.369 0.0 0.00 0.000 2.349 0.000 2.349 YES 1.174 1.271 421.271 437.500 O.K. 130 427.880 2.50 429.880 30 26.983 62.56 0.00385 0.241 15.870 0.978 11.028 1.888 0.661 0.0 0.00 0.000 1.639 0.000 1.639 YES 0.819 1.060 431.325 446.920 O.K. 136 436.730 2.50 438.730 30 26.983 30.94 0.00385 0.119 11.028 0.472 9.787 1.487 0.521 0.0 0.00 0.000 0.993 0.391 0.993 YES 0.496 0.616 439.346 446.110 O.K. 144 442.330 2.00 443.930 24 15.759 181.26 0.00432 0.783 9.673 0.363 8.145 1.030 0.361 0.0 0.00 0.000 0.724 0.365 0.724 YES 0.362 1.145 446.079 454.810 O.K. 148 445.150 2.00 446.750 24 14.613 119.92 0.00372 0.446 8.145 0.258 10.506 1.714 0.600 0.0 0.00 0.000 0.857 0.311 0.857 YES 0.429 0.874 447.624 458.100 O.K. 150 451.620 2.00 453.220 24 14.302 101.95 0.00356 0.363 10.506 0.428 10.990 1.875 0.656 0.0 0.00 0.000 1.085 0.638 1.085 YES 0.542 0.905 454.555 460.860 O.K. 154C 460.850 2.00 462.450 24 12.492 45.25 0.00272 0.123 10.990 0.469 10.920 1.852 0.648 0.0 0.00 0.000 1.117 0.000 1.117 YES 0.558 0.681 463.131 468.240 O.K. 154 462.260 2.00 463.860 24 12.143 57.06 0.00257 0.146 10.920 0.463 10.732 1.788 0.626 0.0 0.00 0.000 1.089 0.345 1.089 YES 0.544 0.691 464.551 470.950 O.K. 158 465.850 2.00 467.450 24 11.448 153.79 0.00228 0.351 10.732 0.447 9.765 1.481 0.518 0.0 0.00 0.000 0.965 0.000 0.965 YES 0.483 0.833 470.435 479.240 O.K. 162A 473.490 2.00 475.090 24 10.910 87.11 0.00207 0.180 9.765 0.370 9.774 1.483 0.519 0.0 0.00 0.000 0.889 0.000 0.889 YES 0.445 0.625 476.001 483.300 O.K. 162 476.740 2.00 478.340 24 10.910 126.88 0.00207 0.263 9.774 0.371 7.542 0.883 0.309 0.0 0.00 0.000 0.680 0.192 0.680 YES 0.340 0.603 480.051 489.620 O.K. 166 479.360 2.00 480.960 24 10.461 87.43 0.00190 0.167 7.542 0.221 7.456 0.863 0.302 0.0 0.00 0.000 0.523 0.092 0.523 YES 0.261 0.428 481.388 491.970 O.K. 168 480.350 2.00 481.950 24 10.369 42.31 0.00187 0.079 7.456 0.216 9.289 1.340 0.469 0.0 0.00 0.000 0.685 0.080 0.685 YES 0.342 0.422 482.372 491.640 O.K. 170A 481.400 1.50 482.600 18 1.360 149.53 0.00015 0.022 4.343 0.073 3.989 0.247 0.086 0.0 0.00 0.000 0.160 0.000 0.160 YES 0.080 0.102 483.250 498.880 O.K. 170 483.560 1.25 484.560 15 0.539 94.12 0.00006 0.006 3.379 0.044 2.950 0.135 0.047 0.0 0.00 0.000 0.092 0.539 0.119 YES 0.060 0.065 484.735 488.420 O.K. 172 483.710 1.25 484.735 15 0.340 90.18 0.00002 0.002 2.950 0.034 0.000 0.000 0.000 0.0 0.00 0.000 0.034 0.340 0.044 YES 0.022 0.024 484.797 489.010 O.K. 138 438.600 2.00 440.200 24 10.198 55.20 0.00181 0.100 7.432 0.214 7.423 0.856 0.299 0.0 0.00 0.000 0.514 0.206 0.514 YES 0.257 0.357 440.557 447.900 O.K. 140 439.250 2.00 440.850 24 9.992 79.43 0.00174 0.138 7.423 0.214 10.536 1.724 0.603 0.0 0.00 0.000 0.817 1.998 0.817 YES 0.409 0.547 441.397 445.030 O.K. 142 440.600 1.25 441.600 15 7.994 63.87 0.01364 0.871 10.536 0.431 0.000 0.000 0.000 0.0 0.00 0.000 0.431 7.994 0.560 YES 0.280 1.151 443.252 449.240 O.K. 136A 437.290 1.25 439.346 15 1.605 51.16 0.00055 0.028 4.624 0.083 4.695 0.342 0.120 0.0 0.00 0.000 0.203 0.303 0.203 YES 0.101 0.130 439.475 444.610 O.K. 134 437.900 1.25 439.475 15 1.014 44.59 0.00022 0.010 4.695 0.086 0.000 0.000 0.000 0.0 0.00 0.000 0.086 1.014 0.111 YES 0.056 0.065 439.541 443.560 O.K. 144B 440.620 2.00 442.220 24 16.479 107.07 0.00473 0.506 9.787 0.372 3.285 0.168 0.059 0.0 0.00 0.000 0.430 0.306 0.430 YES 0.215 0.721 443.286 449.230 O.K. 144A 443.310 1.25 444.310 15 0.484 32.70 0.00005 0.002 3.285 0.042 0.000 0.000 0.000 0.0 0.00 0.000 0.042 0.484 0.054 YES 0.027 0.029 444.339 449.610 O.K. LD-347 PROJECT: Southwood Redevelopment - Village 1 DESIGNED BY: CG HYDRAULIC GRADE LINE ANALYSIS INCIDENCE PROBABILITY 10 Year Checked: INLET OR JUNCTION STA. INVERT EL. OUTFLOW PIPE DEPTH OF FLOW OUTFLOW PIPE OUTLET WATER SURFACE ELEV. DIA. PIPE Do (In/mm) DESIGN DISCH. Qo (CFS/CMS) LENGTH PIPE Lo (Ft/M) FRICTION SLOPE, Sfo (FT/FT) (M/M) FRICTION LOSS Hf (Ft/M) JUNCTION LOSS SURFACE FLOW Adj. Ht 1.3 Ht (Ft/M) Inlet Shaping? Y/N 0.5 Ht (Ft/M) FINAL H (Ft/M) Inlet Water Surface Elevation Top of MH Top of Inlet Elev. APPROX. Adjustment? Vo Contr. Ho (Ft/M) Vi Vi'2/2g Hi (Expn) 0.35'MAX. (Vi2/2g) SKEW Angle K Bend H (Ft/M) Sum HL (Ft/M) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 16 17 18 19 146 447.590 1.25 448.590 15 0.896 38.24 0.00017 0.007 4.999 0.097 0.000 0.000 0.000 0.0 0.00 0.000 0.097 0.896 0.126 YES 0.063 0.070 448.660 454.880 O.K. 152 453.760 1.25 454.760 15 0.635 40.05 0.00009 0.003 3.547 0.049 0.000 0.000 0.000 0.0 0.00 0.000 0.049 0.635 0.063 YES 0.032 0.035 454.795 460.890 O.K. 154B 455.130 2.00 456.730 24 13.024 187.03 0.00295 0.552 10.248 0.408 2.873 0.128 0.045 0.0 0.00 0.000 0.453 0.257 0.453 YES 0.226 0.778 459.719 466.030 O.K. 154A 459.610 1.25 460.610 15 0.308 37.79 0.00002 0.001 2.873 0.032 0.000 0.000 0.000 0.0 0.00 0.000 0.032 0.308 0.042 YES 0.021 0.022 460.632 466.510 O.K. 156 463.790 1.25 464.790 15 0.504 37.80 0.00005 0.002 4.238 0.070 0.000 0.000 0.000 0.0 0.00 0.000 0.070 0.504 0.091 YES 0.045 0.047 464.837 471.430 O.K. 160 472.220 1.25 473.220 15 0.765 37.79 0.00012 0.005 3.753 0.055 0.000 0.000 0.000 0.0 0.00 0.000 0.055 0.765 0.071 YES 0.036 0.040 473.260 479.120 O.K. 164 482.940 1.25 483.940 15 0.360 41.32 0.00003 0.001 2.993 0.035 0.000 0.000 0.000 0.0 0.00 0.000 0.035 0.360 0.045 YES 0.023 0.024 483.964 490.030 O.K. 600 480.960 2.00 482.560 24 9.097 62.63 0.00144 0.090 9.289 0.335 0.000 0.000 0.000 0.0 0.00 0.000 0.335 9.097 0.435 YES 0.218 0.308 482.910 487.290 O.K. 172A 483.000 1.25 484.000 15 0.929 35.28 0.00018 0.006 3.989 0.062 0.000 0.000 0.000 0.0 0.00 0.000 0.062 0.589 0.080 YES 0.040 0.047 484.047 489.900 O.K. 132 438.380 1.25 439.475 15 0.237 48.27 0.00001 0.001 2.666 0.028 0.000 0.000 0.000 0.0 0.00 0.000 0.028 0.237 0.036 YES 0.018 0.019 439.494 443.200 O.K. LD-347 PROJECT: Southwood Redevelopment - Village 1 DESIGNED BY: CG HYDRAULIC GRADE LINE ANALYSIS INCIDENCE PROBABILITY 10 Year Checked: INLET OR JUNCTION STA. INVERT EL. OUTFLOW PIPE DEPTH OF FLOW OUTFLOW PIPE OUTLET WATER SURFACE ELEV. DIA. PIPE Do (In/mm) DESIGN DISCH. Qo (CFS/CMS) LENGTH PIPE Lo (Ft/M) FRICTION SLOPE, Sfo (FT/FT) (M/M) FRICTION LOSSTContr). Hf (Ft/M) JUNCTION LOSS SURFACE FLOW Adj. Ht 1.3 Ht (Ft/M) Inlet Shaping? Y/N 0.5 Ht (Ft/M) FINAL H (Ft/M) Inlet Water Surface Elevation Top of MH Top of Inlet Elev. APPROX. Adjustment? Vi Vi'2/2g Hi (Expn) 0.35'MAX. (Vi2/2g) SKEW Angle K Bend H (Ft/M) Sum HL (Ft/M) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 16 17 18 19 200 415.550 202 413.950 2.00 415.550 24 28.681 15.83 0.01432 0.227 18.891 1.385 18.884 5.537 1.938 0.0 0.00 0.000 3.323 0.000 3.323 YES 1.662 1.888 417.438 420.100 O.K. 204A 415.360 2.00 417.438 24 28.681 69.57 0.01432 0.996 18.884 1.384 16.178 4.064 1.422 0.0 0.00 0.000 2.807 0.000 2.807 YES 1.403 2.399 420.504 435.860 O.K. 204 420.720 2.00 422.320 24 28.681 30.42 0.01432 0.436 16.178 1.016 10.789 1.807 0.633 0.0 0.00 0.000 1.649 0.318 1.649 YES 0.824 1.260 423.580 434.770 O.K. 206 422.430 1.50 423.630 18 14.715 30.82 0.01748 0.539 10.353 0.416 10.270 1.638 0.573 0.0 0.00 0.000 0.989 0.605 0.989 YES 0.495 1.033 424.663 435.090 O.K. 120 423.150 1.50 424.663 18 14.110 64.00 0.01607 1.029 10.270 0.409 6.392 0.634 0.222 0.0 0.00 0.000 0.631 0.000 0.631 YES 0.316 1.344 426.008 431.910 O.K. 108 424.530 1.50 426.008 18 3.187 61.43 0.00082 0.050 6.392 0.159 9.143 1.298 0.454 0.0 0.00 0.000 0.613 0.237 0.613 YES 0.306 0.357 426.365 432.850 O.K. 110 427.940 1.25 428.940 15 2.651 92.51 0.00150 0.139 9.143 0.325 6.724 0.702 0.246 0.0 0.00 0.000 0.570 0.145 0.570 YES 0.285 0.424 432.458 437.000 O.K. 112A 432.200 1.25 433.200 15 2.506 127.73 0.00134 0.171 6.724 0.176 9.216 1.319 0.462 0.0 0.00 0.000 0.637 0.593 0.828 YES 0.414 0.585 435.179 443.870 O.K. 112 438.260 1.25 439.260 15 1.913 43.07 0.00078 0.034 9.216 0.330 7.153 0.794 0.278 0.0 0.00 0.000 0.608 0.910 0.790 YES 0.395 0.429 441.122 445.910 O.K. 114 440.940 1.25 441.940 15 1.003 83.63 0.00021 0.018 7.153 0.199 5.741 0.512 0.179 0.0 0.00 0.000 0.378 0.382 0.491 YES 0.246 0.263 445.334 449.790 O.K. 116 445.220 1.25 446.220 15 0.621 76.90 0.00008 0.006 5.741 0.128 0.000 0.000 0.000 0.0 0.00 0.000 0.128 0.621 0.166 YES 0.083 0.089 448.479 453.350 O.K. 202A 428.320 1.25 429.320 15 0.314 57.56 0.00002 0.001 3.675 0.052 0.000 0.000 0.000 0.0 0.00 0.000 0.052 0.314 0.068 YES 0.034 0.035 429.623 433.280 O.K. 208B 428.820 2.00 430.420 24 15.903 58.09 0.00440 0.256 10.789 0.452 10.617 1.750 0.613 0.0 0.00 0.000 1.064 0.226 1.064 YES 0.532 0.788 431.208 436.260 O.K. 208 430.080 2.00 431.680 24 15.050 35.74 0.00394 0.141 10.617 0.438 10.512 1.716 0.601 0.0 0.00 0.000 1.038 0.658 1.038 YES 0.519 0.660 432.340 437.130 O.K. 210B 430.960 2.00 432.560 24 14.392 108.73 0.00360 0.392 10.512 0.429 10.483 1.706 0.597 0.0 0.00 0.000 1.026 0.110 1.026 YES 0.513 0.905 434.029 440.350 O.K. 210 433.230 2.00 434.830 24 14.154 55.90 0.00349 0.195 10.483 0.427 10.397 1.679 0.587 0.0 0.00 0.000 1.014 0.374 1.014 YES 0.507 0.702 435.532 441.830 O.K. 212 434.450 2.00 436.050 24 13.781 32.04 0.00331 0.106 10.397 0.420 10.375 1.671 0.585 0.0 0.00 0.000 1.005 0.156 1.005 YES 0.502 0.608 436.658 441.870 O.K. 214 435.200 2.00 436.800 24 13.625 40.45 0.00323 0.131 10.375 0.418 10.917 1.851 0.648 0.0 0.00 0.000 1.066 0.275 1.066 YES 0.533 0.663 437.463 442.430 O.K. 220 436.320 2.00 437.920 24 12.210 83.40 0.00259 0.216 10.917 0.463 7.762 0.936 0.327 0.0 0.00 0.000 0.790 0.359 0.790 YES 0.395 0.611 439.172 445.620 O.K. 222 438.530 2.00 440.130 24 11.851 30.71 0.00244 0.075 7.762 0.234 8.700 1.175 0.411 0.0 0.00 0.000 0.645 0.246 0.645 YES 0.323 0.398 440.528 445.350 O.K. 228 440.080 1.50 441.280 18 6.680 34.83 0.00360 0.125 8.700 0.294 8.603 1.149 0.402 0.0 0.00 0.000 0.696 0.281 0.696 YES 0.348 0.473 441.753 445.590 O.K. 230 440.860 1.50 442.060 18 6.399 49.76 0.00331 0.164 8.603 0.287 8.321 1.075 0.376 0.0 0.00 0.000 0.664 0.669 0.664 YES 0.332 0.496 442.556 447.620 O.K. 232 442.420 1.25 443.420 15 5.730 17.71 0.00701 0.124 8.321 0.269 7.794 0.943 0.330 0.0 0.00 0.000 0.599 1.417 0.779 YES 0.389 0.513 443.933 448.730 O.K. 234 442.870 1.25 443.933 15 4.314 86.87 0.00397 0.345 7.794 0.236 7.140 0.792 0.277 0.0 0.00 0.000 0.513 0.598 0.513 YES 0.256 0.602 445.187 449.970 O.K. LD-347 PROJECT: Southwood Redevelopment - Village 1 DESIGNED BY: CG HYDRAULIC GRADE LINE ANALYSIS INCIDENCE PROBABILITY 10 Year Checked: INLET OR JUNCTION STA. INVERT EL. OUTFLOW PIPE DEPTH OF FLOW OUTFLOW PIPE OUTLET WATER SURFACE ELEV. DIA. PIPE Do (In/mm) DESIGN DISCH. Qo (CFS/CMS) LENGTH PIPE Lo (Ft/M) FRICTION SLOPE, Sfo (FT/FT) (M/M) FRICTION LOSS Hf (Ft/M) JUNCTION LOSS SURFACE FLOW Adj. Ht 1.3 Ht (Ft/M) Inlet Shaping? Y/N 0.5 Ht (Ft/M) FINAL H (Ft/M) Inlet Water Surface Elevation Top of MH Top of Inlet Elev. APPROX. Adjustment? Vo Contr. Ho (Ft/M) Vi Vi'2/2g Hi (Expn) 0.35'MAX. (Vi2/2g) SKEW Angle K Bend H (Ft/M) Sum HL (Ft/M) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 16 17 18 19 236 444.710 1.25 445.710 15 3.716 56.94 0.00295 0.168 7.140 0.198 0.000 0.000 0.000 0.0 0.00 0.000 0.198 3.716 0.257 YES 0.129 0.296 446.260 450.140 O.K. 106 425.550 1.25 426.550 15 0.314 71.00 0.00002 0.001 2.884 0.032 0.000 0.000 0.000 0.0 0.00 0.000 0.032 0.314 0.042 YES 0.021 0.022 426.572 432.440 O.K. 208A 430.080 1.50 431.280 18 0.671 35.52 0.00004 0.001 4.500 0.079 0.000 0.000 0.000 0.0 0.00 0.000 0.079 0.671 0.102 YES 0.051 0.052 431.332 437.260 O.K. 210A 433.970 1.25 434.970 15 0.136 32.00 0.00000 0.000 2.250 0.020 0.000 0.000 0.000 0.0 0.00 0.000 0.020 0.136 0.026 YES 0.013 0.013 434.983 440.340 O.K. 216 436.110 1.00 437.463 12 1.189 30.60 0.00099 0.030 5.555 0.120 6.128 0.583 0.204 0.0 0.00 0.000 0.324 0.581 0.421 YES 0.211 0.241 437.704 442.760 O.K. 218 438.170 1.00 438.970 12 0.608 16.12 0.00026 0.004 6.128 0.146 0.000 0.000 0.000 0.0 0.00 0.000 0.146 0.608 0.190 YES 0.095 0.099 439.084 443.900 O.K. 224B 440.060 1.25 441.060 15 3.952 40.95 0.00333 0.137 7.615 0.225 8.161 1.034 0.362 0.0 0.00 0.000 0.587 0.718 0.587 YES 0.294 0.430 441.490 446.840 O.K. 224 442.370 1.25 443.370 15 2.964 98.00 0.00188 0.184 8.161 0.259 5.792 0.521 0.182 0.0 0.00 0.000 0.441 0.178 0.441 YES 0.220 0.404 445.731 450.600 O.K. 226A 445.410 1.25 446.410 15 1.473 57.42 0.00046 0.027 5.792 0.130 4.425 0.304 0.106 0.0 0.00 0.000 0.237 0.891 0.308 YES 0.154 0.180 446.886 452.830 O.K. 226 446.700 1.25 447.700 15 0.582 29.79 0.00007 0.002 4.425 0.076 0.000 0.000 0.000 0.0 0.00 0.000 0.076 0.582 0.099 YES 0.049 0.052 447.752 453.320 O.K. 224A 440.980 1.25 441.980 15 0.645 29.79 0.00009 0.003 3.572 0.050 0.000 0.000 0.000 0.0 0.00 0.000 0.050 0.645 0.064 YES 0.032 0.035 442.015 447.320 O.K. 238 445.450 1.25 446.450 15 1.436 59.59 0.00044 0.026 5.761 0.129 5.638 0.494 0.173 0.0 0.00 0.000 0.302 0.000 0.302 YES 0.151 0.177 446.971 454.280 O.K. 242 449.090 1.25 450.090 15 1.341 83.86 0.00038 0.032 5.638 0.123 0.000 0.000 0.000 0.0 0.00 0.000 0.123 1.341 0.160 YES 0.080 0.112 451.081 456.900 O.K. 240 446.750 1.25 447.750 15 0.438 22.26 0.00004 0.001 4.072 0.064 0.000 0.000 0.000 0.0 0.00 0.000 0.064 0.438 0.084 YES 0.042 0.043 447.793 451.720 O.K. LD-347 PROJECT: Southwood Redevelopment - Village 1 DESIGNED BY: CG HYDRAULIC GRADE LINE ANALYSIS Checked: INCIDENCE PROBABILITY 10 Year INLET OR JUNCTION STA. INVERT EL. OUTFLOW PIPE DEPTH OF FLOW OUTFLOW PIPE OUTLET WATER SURFACE ELEV. DIA. PIPE Do (In/mm) DESIGN DISCH. Do (CFS/CMS) LENGTH PIPE Lo (Ft/M) FRICTION SLOPE, Sib (FT/FT) (M/M) FRICTION LOSS7Contr). Hf (Ft/M) JUNCTION LOSS SURFACE FLOW Adj. Ht 1.3 Ht (Ft/M) Inlet Shaping? Y/N 0.5 Ht (Ft/M) FINAL H (Ft/M) Inlet Water Surface Elevation Top of MH Top of Inlet Elev. APPROX. Adjustment? Vi Vi'2/2g Hi (Expn) 0.35'MAX. (Vi2/29) SKEW Angle K Bend H (Ft/M) Sum HL (Ft/M) (1) (2) (3) (4) (5) (6) (7) (8) (9) (10) (11) (12) (13) (14) (15) (16) (16) (17) (18) (19) 300 431.910 302 430.910 1.25 431.910 15 2.355 9.50 0.00118 0.011 5.241 0.107 0.000 0.000 0.000 0.0 0.00 0.000 0.107 2.355 0.139 YES 0.069 0.081 431.991 432.770 0.K. LD-347 PROJECT: Southwood Redevelopment - Village 1 DESIGNED BY: CG HYDRAULIC GRADE LINE ANALYSIS INCIDENCE PROBABILITY 10 Year Checked: INLET OR JUNCTION STA. INVERT EL. OUTFLOW PIPE DEPTH OF FLOW OUTFLOW PIPE OUTLET WATER SURFACE ELEV. DIA. PIPE Do (In/mm) DESIGN DISCH. Qo (CFS/CMS) LENGTH PIPE Lo (Ft/M) FRICTION SLOPE, Sfo (FT/FT) (M/M) FRICTION LOSSTContr). Hf (Ft/M) JUNCTION LOSS SURFACE FLOW Adj. Ht 1.3 Ht (Ft/M) Inlet Shaping? Y/N 0.5 Ht (Ft/M) FINAL H (Ft/M) Inlet Water Surface Elevation Top of MH Top of Inlet Elev. APPROX. Adjustment? Vi Vi'2/2g Hi (Expn) 0.35'MAX. (Vi2/2g) SKEW Angle K Bend H (Ft/M) Sum HL (Ft/M) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 16 17 18 19 400 432.110 402 430.910 1.50 432.110 18 5.370 38.92 0.00233 0.091 5.756 0.129 8.653 1.163 0.407 0.0 0.00 0.000 0.536 0.000 0.536 YES 0.268 0.358 432.468 437.620 O.K. 406 432.070 1.25 433.070 15 3.690 10.05 0.00291 0.029 8.653 0.291 8.554 1.136 0.398 0.0 0.00 0.000 0.688 0.813 0.895 YES 0.447 0.477 433.547 436.910 O.K. 408 432.470 1.25 433.547 15 2.877 172.89 0.00177 0.305 8.554 0.284 6.717 0.701 0.245 0.0 0.00 0.000 0.529 0.388 0.529 YES 0.265 0.570 438.918 445.650 O.K. 410 438.950 1.25 439.950 15 2.489 38.46 0.00132 0.051 6.717 0.175 7.371 0.844 0.295 0.0 0.00 0.000 0.470 0.000 0.470 YES 0.235 0.286 440.236 448.380 O.K. 416B 444.000 1.25 445.000 15 1.110 47.62 0.00026 0.013 7.371 0.211 4.171 0.270 0.095 0.0 0.00 0.000 0.305 0.000 0.305 YES 0.153 0.165 446.605 456.800 O.K. 416A 450.370 1.25 451.370 15 1.110 53.95 0.00026 0.014 4.171 0.068 4.103 0.261 0.091 0.0 0.00 0.000 0.159 0.044 0.159 YES 0.080 0.094 451.464 458.060 O.K. 416 451.010 1.25 452.010 15 1.066 32.38 0.00024 0.008 4.103 0.065 3.886 0.234 0.082 0.0 0.00 0.000 0.147 0.193 0.147 YES 0.074 0.082 452.092 458.020 O.K. 418 451.430 1.25 452.430 15 0.873 43.16 0.00016 0.007 3.886 0.059 3.247 0.164 0.057 0.0 0.00 0.000 0.116 0.415 0.151 YES 0.075 0.082 452.512 458.710 O.K. 420 451.960 1.25 452.960 15 0.458 33.27 0.00004 0.001 3.247 0.041 0.000 0.000 0.000 0.0 0.00 0.000 0.041 0.458 0.053 YES 0.027 0.028 452.988 458.560 O.K. 404A 431.310 1.25 432.468 15 2.831 26.75 0.00171 0.046 4.757 0.088 4.553 0.322 0.113 0.0 0.00 0.000 0.201 0.410 0.201 YES 0.100 0.146 432.614 437.240 O.K. 404 431.600 1.25 432.614 15 2.421 106.66 0.00125 0.133 4.553 0.080 0.000 0.000 0.000 0.0 0.00 0.000 0.080 2.421 0.105 YES 0.052 0.186 432.909 436.490 O.K. 412 439.820 1.25 440.820 15 1.384 56.58 0.00041 0.023 5.684 0.125 3.970 0.245 0.086 0.0 0.00 0.000 0.211 0.504 0.274 YES 0.137 0.160 441.266 445.970 O.K. 414 441.050 1.25 442.050 15 0.360 36.82 0.00003 0.001 3.833 0.057 0.000 0.000 0.000 0.0 0.00 0.000 0.057 0.360 0.074 YES 0.037 0.038 442.088 446.240 O.K. 412A 441.310 1.25 442.310 15 0.408 47.12 0.00004 0.002 3.970 0.061 0.000 0.000 0.000 0.0 1 0.00 j 0.000 j 0.061 0.408 0.080 YES 0.040 0.041 442.423 449.890 O.K. PROJECT Southaadd Redeveopment- VRlageI SHEEP UNITS OF ENGLISH CULVERT DESIGNER REVIVER: DESIGN FORM LD-269 DATE DATE: 2/92021 ROAD COUNTY Albemade(Zone 2) CULVERT 501 VA NOAA Station Charlouesville HYDROLOGICAL DATA Method: RATIONAL Drainage Area: 3.317 Acres Time of Concentration 5 Minutes DESIGN FLOWS SMdr. ELSE- Eli= L= S= SKEW= Elev. D. = ELHWQ= 45454 452 W R 45286 R 7134 it 524% 00 Roadway Width 28.7 R ROADWAY ELEVATION R ft_______________________________________________ Hwi ___________________stream Bed DEPRESSION Oin "nsRed 0013 456.53 R __________ _________________________ Ek-- Road Lerch ___ H TW _ 449.12 100 Freeboard= Shirr. Elev. Rr= TWDEPTH TW VO.. Charuel6w.El. R Suface Type 9VALUEI 027 325 44325 PAVED ft R R fps R R,L (years) FLOW (Cf6) 10 Design $23 2 Check 6.43 25 Max. 1035 CULVERT DESCR ION: TYPE: Siogle/Moltiple Conforming Later Edge Description: Smooth TepeKdlnlM Tlv0a1 TOTAL FLOW Q c@ FWW PER HARREL QM cf HEADWATER CALCULATIONS CONTROL HEADWATER ELEV LI OUTLET VEL fps MRIR SHOULDER ELEV, R COMMEN It MLET CONTROL OUTLET CONTROL Smile/Multi Ie Confomrin / Broken Back Culverts HWFD HWi ft FALL R ELHWi R TW R do R (d D)Q R on R ke H R ELHWo R MATERIAI, SHAPE SvA(in) N Mennrng5 n Concrete Circular l8 1 0.01 823 82 L12 168 008 45454 027 Lit 1.31 1.31 020 0.84 45127 454.54 12.30 643 64 0.98 147 008 45433 0.25 098 124 124 020 0.51 450.87 454.33 IL52 1035 104 1,32 198 008 454.84 0.30 1.24 1.37 1.37 020 1.33 451.82 4A 84 13.09 Broken Back Calvert TAILWATER DATA: TAILWATER RESULTS: ROADWAY DATA: ROADWAY OVERTOPPING: LENGTH Elev. SKEW' 1craml Shape Tno mar 0.035 Doctorge c6 Devmion R Flow depth R Widen, IF, ostl ywMdr,R 287 Discharge cE O—Ppirg Dielarge cf5 OvedoFPo�6 Ekvanoo R 30dr. Width, R Side Slope LC(HAV) Side Slope Rt(H:1V) -Immel Slope, ftlft 000 mmcc Type PAVED 50.00 esi 44352 02] 325op d142 of Read Elevation, It 45flM Desi 0 000 18.00 Peck .350 0253.06 Length of RoadR 100 heck 0 000 0.0830 44355 0.30 344 Max. 0 000 Distnrice Elevation TECHNICALFOOTNOTES: (1) USE Q/NB FOR BOX CULVERTS (4) ELM=HWi+ ni(INVERT OF INLET CONTROL SECTION) (6)he-TW or(dc+ D/2)(WBICHEVER IS GREATER) (2)HWi/D= BW/D OR BWi/D FROM DESIGN CHARTS (5) TW BASED ON DOWNSTREAM CONTROL OR FLOW (7)H-11+kc+(29.2L)/R13W2g (3) FALL =HW1-(ELHWd-ELsf$ FALL IS ZERO FOR CULVERTS ON GRADE DEPTH IN CHANNEL SUBSCRIPT DEFINITIONS: COMMENTS / DISCUSSION: CULVERT BARREL SELECTED HWd DESIGN HEADWATER r INLET SIZE: n: HWi BW MINLET CONTROL o OUTLET SHAPE: MATERW.: HWo HW IN OUTLET CONTROL sf Streambed ENTRANCE: @ culvert face CULVERTSOFf by ENSOFTEO, INC. PROJECT SouMwodd Redeveopment - V01age 1 SHEET UNITS OF ENGLISH CULVERT DESIGNER REVIEWER DESIGN FORM LD-269 DATE DATE: 2/92021 ROAD COUNTY Albemade(Zone 2) CULVERT 509 VA NOAA Station Charlottesville HYDROLOGICAL DATA Method: INPUT Drainage Area: 1.102 Time ofConcentralion 5 DESIGN FLOWS SMdr. ELSE- Eli= L= S= SKEW= Elev. D. = ELHWd= 48500 48391 ft 48383 R 1958 it L9!i% 00 Roadway Width 10 ft ROADWAY ELEVATION R ft _______________________________________________ Hwi ___„____„______5��� DEPRESSION 0. "nsRed 0013 488.00 R __________ Ek=- Road Lerch ___ H TW _ 48344 25 Freeboard= Shirr. Elev. Rr= TWDEPTH TW VO.. Chamnl lnvEl_ ft Sidce Type 9VALUEI 055 5.02 483.52 PAVED ft ft it fps ft R,L (years) FLOW (cf6) 10 Design 526 2 Check 225 25 Max. 6.62 CULVERT DESCR ION: TYPE: Siogle/Moltiple Conforming Later Edge Description: Smooth TepcKdlnlM Tlv0a1 TOTAL FLOW Q c@ FWW PER HARREL QN cfs HEADWATER CALCULATIONS CONTROL HEADWATER ELEV LI OUTLET VEL fps MRIR SHOULDER ELEV, R COMMEN It NUT CONTROL OUTLET CONTROL Smile/Multi Ie Confomrin / Broken Back Culverts HWFD HWi ft FALL ft ELHWi R TW R do R (d D)Q R on R ke H R ELHWo R MATERIAI, SHAPE SvA(in) N Mennrng5 n Concrete Circular 24 1 001 526 53 L59 117 008 48500 0.55 0,81 141 140 020 006 48491 48500 749 225 23 044 0.73 008 48456 0.40 052 126 126 020 001 484.71 484.71 5,85 662 66 0.67 1,33 008 485.16 T60 091 I ki 146 020 0.10 48500 485,16 800 Broken Back Culvert TAILWATER DATA: TAILWATER RESULTS: ROADWAY DATA: ROADWAY OVERTOPPING: LENGTH Elev. SKEW' 1ami,1 Shape Tno filar 0.035 Discharge cR Elevmion ft Flow depth ft Widen, fps Shearforce PSF ostl ywMdr,R 10 Discharge cF: O—Ppmg Dielarge cf8 OvedoPP" Ekvanon R 30drm Width, R Side Slope LC(HAV) Side Slope Rt(H:1V) -Immel Slope. fVft 000 mmcc Type PAVED 3.00 esi 48407 0.55 5.02 2.84 op of Read Elevatom, It 488 Deei 0 000 4.00 lack 48392 040 4.06 206 Length of RoadR 25 heck 0 000 0.0830 484.12 O60 532 309 Max 0 0W Dicmrice Elevation TECHNICALFOOTNOTES: (1) USE Q/NB FOR BOX CULVERTS (4) ELM=HWi+ ni(INVERT OF INLET CONTROL SECTION) (6)he—TW or(dc+ D/2)(WHICHEVER IS GREATER) (2)HWi/D= BW/D OR BWi/D FROM DESIGN CHARTS (5)TW BASED ON DOWNSTREAM CONTROL OR FLOW (7)H=1I+kc+(29.2L)/R13W2g (3) FALL =HW1-(ELHWd-ELsf$ FALL IS ZERO FOR CULVERTS ON GRADE DEPTH IN CHANNEL SUBSCRIPT DEFINITIONS: COMMENTS / DISCUSSION: CULVERT BARREL SELECTED HWd DESIGN HEADWATER r INLET SIZE: n: HWi BW M INLET CONTROL o OUTLET SHAPE: MATERW.: HWo HW IN OUTLET CONTROL sf Streambed ENTRANCE: @ culvert face CULVERTSOFf by ENSOFTEO, INC. oi V5 0 C a :. 1 1 1 1 1 • AIlq :1 � �' 11y���IIpx1I 1�►��' 1 1 � � y����1gllxxxl�Ilryry� .JI�I 1'IIyI��■ �• I'lll% I��IIP IWII 1 ,!�! 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RI.. .. �®��puinlN j1���6NiNNiNNNINNIIiill,xll�-�.���������� 11 1 / 1 11 11 11 111 1 qEq Nyfnb FunafjBNuttbn Metlml NewgevelopmenF (nmPlux¢ 3gealfAM - 172011 BMPNandadsand 3petlflWkns O3013 DF BMP Standards and 3PetMYFlons Pmje[t Name: i SOutI od Da.: 918/20U BMP Meg, SPe[ifi[mieni t 2013 Droll Sods &Specs Site Information Post -Development Project (Treatment Volume and Loads) Lana Comer (.near) ASoik Bbils CSoih DSolls Fe¢a/DPeny.¢pail-w san�m, 6355 ¢a OraVvpe ¢'fvrevMlaM 6.33 nmeanndaa5l f ainwYds¢aea M� ]OA] Y rwhm Eemvweq/maregetl ]p.C) m nin Fnaesl+vaal 6.5] 65] Hret/open SPv[eemi musahgneactetlln vca'v[ann¢urm me NglMV FunvAFMumm� FaeoMa ]339 CO.. amen llrcbeel q3 rcbesl'^, Y mullrll IN M) ' 026 �I¢Dn C(MEMC )y en I3N1 EM[Imyll 1.e6 iargetm Lvaallb/atre/y[1 OA] Pl un on Fatm.l 0.90 3A Asoik BSWI[ CSoik DSolls w[ewpm smote 2- On3 opt DDs anayaiuh 015 030 025 095 095 a. 095 095 Land Lover Summary TM ent Volume and NWknt Loads F—VOw ,space Cove[(auezl 635 WeeMdPvlMrertl R03 ss are % Managetl Tuhfderlatrezl ]OA] Wei dit(NM 020 x Manym run asx Impneiouifo2[la[reil 65) M �impe[Naml 095 M lmpetnou5 )B% SRe Arealatresl 33.39 Pr 0.36 T�ealmeM Volume la[ae-RI 0]]05 Treatment VolmnelcWitixtl 309a9 TP Load (1b/w) ]9A5 Inaa lib/nl 13911 4YiM1mnYM lum YItuINm Ylk Drainage AreaA .1i m-Arx AYitl Care, Lave) RE, �_@sn--,amo„ bnrmnraleE Pact ManwemaM Yo,liroc INP m NunnH Naluriinnl um PbmFinam AMAIN. 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A 11Un1 M ME WATER OUALFTYCOMPLIANCE TAN FOR SITE COMYLMNCE CALCULATONS a_ nlsaerz3lA A A Ann EGA PGA,- nvlm nq _ I-- IN., XFrzn<I A penl nzlma wml lsasavl �. �re m m Mm mM EA1n•1� AMA TATATLLIMPEMT EATUUAxEATAT EEIn A•1 CHECK: Ax PGRALPHOSPROxYE xEMDVAL REWIRED AN ERE LIfy,lo A A IIbN,I A llb/nl TDrALPHOSPxD.A. ApbN•1 nl Tmu PHOSPHORUS REAMING AFTER APnn xG IMP LOAD REOUCTRONS IN Dx A 1u✓yrl SEE WATER QUALITY COMPLIANCE TAB FOR SIEE COMPLIANCE CALCULATIONS aAII N.l xrt NOGw BEMA,RAwrtxaur .A Allb/ytl TmALXRRAGEN REIAORED Ix on A BbMI 4Mbep,lua YMemM xamgn kmai,u® Emm YpIDeam FIRM, bnab hnraea xr xaman baa FAR IXRawaylzl on Obnl .SP-Enl P baI.al Lb.) Pavement IRRI eable a, abann<I IRRI Ie 1, Dry IPPI n IRRI InfilnaGon IRRI eed x--n vane IRRI Sh—flow o�mmm Xlu,/DW a(RR) 00000 IDEAL Da LEIFIj x� rtwGw REmovEAwrtx RDXOFEXEOYUOFF RMTCTUINNAAI.TnI H SCE. PERWATTVCOMVUANCf TAB FOR.. CALCUL1O. IMPEON bn Mlyf APU 4� Ann ... i OR 7 mRee wmlana Inn RRl aelno RRl 14 anmaumed BMPIno RRI ommmm ommm Drainage Area B M,Xe¢n.xf Yitl Carer Causal mNPH -P_@BEm.-S M,o„ ARM, TIION bnrm.valea Ibcy ManwemaM PO r HOpK INP m NunnH Nalurtinnl IPE-ph.sAmil..br Re mi BA BI./pl . RreYgmml Tv.bwnL.... in BA B (Xa) 0.gx .. BYaV^eiurl RRENaN,MT.N. "DER OR,NUNaDne.Y 2 MmFbwu. R°ma1M. PM1mpM1m® PRODUCE M,a4m .Riw¢ mNa1 R.NR w.NM �MMH Isi MD®m vr.Na®bh. BapEmM—-1 Na(L IE1 N.ImI va¢.IMI MTmwmlx ryM1nw.eB IaRNER rU r l zavaxau,w Rminlsp;rsl n vaxaumi wanzlsva=rsl :a. Simla us.mnaBmmNn BaH ILRn = zssa.p.a mWau Isv=�nl az zoa. wauo. r,a.annai.nvM n lsa rel .I ....... .r U U xzlsaaxe) 7, ZF T...a a. a m(SPe nl 1 o Fiji= I OF DI..I TEu b9 CHECK. ON TorALRuxON REDucrlOx lx DABlx'1 iU A.Ilbryr) > ON D TCUUkL PHOSPHORUS REM D RUTH RUNOFF REDUCE AHE .IIb/yrI x30 TOEAL PHOSPHORUS OWNING AFTER APPLYING RUNOFF REDUCTION PUCTCES IN DA. B IIb/ErI o IIE WATER QUALITY COMYLWNCE TAN FOR Sli CCUYMNCE CALCULATIONS a_ nlsaevszl - rzls�nBl :. nvlmnq _ Alma -AN, Op -NO IS penl nzNd xGml lsaavvl �. �mxwaN.adT�ama¢�n�.re EDnw TDTOIMPEVIWSC0WR L TRUTEDUI.11 d CxECR. DR. TOTAL PHOSPHORUS REMOVAL REWIRED ON HER Ofi/ ,o ABllb/yrL A.BllbNrl TOTAL PHOSPHORUSAABpI Nl a TURALPHOSPHORUS REMMNINGAETERAPPLYING BMPLOAD REOUCTMNS IN DA BIRNrr1 SEE WATER QUALINCOMPLIANCE TAB FOR SEFECOMPLIANCEO LCUUTMNS NO Bllb/yr NITROGEN SHE REMOWID WORIFFROUT AAellb/y: TOTALNITRWEN REMOVED IN DA B (11, y I RENDERERMbep,lue RODKENi Namga RE—i,n® REPORDENI(mm YpIDeam Hngm REM. REmmee NY Naman aae m MRawglzl M Ob.l am¢I.al P NNO (RO Plllmem IRRI sable a, Cbaaoe1 UR1 Ie IRRI ,IRRI Iofimaoo IRRI eed x¢oeoo vane IRRI ShlltUowmxRe./O¢ o�mmm aIRRI 00000 TOTAINUFFUNFRIDUCEFOININD-Bi.) NITROGEN HE--. _ RUNDN REWCITOH PUnIa'.B Ix DA BIWnI SEE WARR WAUTV COMPUANIf TAR FOR SITEGLCUEATH.. (Info maxion Mlyf 4S -7 once wmn.a lao RRl a Iao RRI 14 aonauorea emvlao RRl ommmm ommm 1s PRE Ohsite 2S zPre Offsite K PRE Combined Subcat Reach Aon Llnk 2021-05-27 Full Routing Prepared by Timmons Gro Area Listing (selected nodes) Area CN Description (acres) (subcatchment-numbers) 0.720 98 Paved parking, HSG B (1S, 2S) 15.550 60 Woods, Fair, HSG B (1S, 2S) 16.270 62 TOTAL AREA Printed 5/28/2021 2021-05-27 Full Routing Prepared by Timmons Gro Soil Listing (selected nodes) Area Soil Subcatchment (acres) Group Numbers 0.000 HSG A 16.270 HSG B 1S, 2S 0.000 HSG C 0.000 HSG D 0.000 Other 16.270 TOTAL AREA Printed 5/28/2021 2021-05-27 Full Routing Prepared by Timmons Gro Ground Covers (selected nodes) Printed 5/28/2021 HSG-A HSG-B HSG-C HSG-D Other Total Ground Subcatchment (acres) (acres) (acres) (acres) (acres) (acres) Cover Numbers 0.000 0.720 0.000 0.000 0.000 0.720 Paved parking 1S, 2S 0.000 15.550 0.000 0.000 0.000 15.550 Woods, Fair 1S, 2S 0.000 16.270 0.000 0.000 0.000 16.270 TOTAL AREA 2021-05-27 Full Routing Type 1124-hr 1-YR Rainfall=3.05" Prepared by Timmons Group Printed 5/28/2021 HydroCADO 10.00-20 s/n 10074 © 2017 HydroCAD Software Solutions LLC Paae 5 Time span=5.00-20.00 hrs, dt=0.05 hrs, 301 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CNI Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment 1S: PRE Onsite Runoff Area=14.750 ac 1.42% Impervious Runoff Depth>0.33" Tc=6.0 min CN=61 Runoff=7.42 cfs 0.404 of Subcatchment 2S: Pre Offsite Runoff Area=1.520 ac 33.55% Impervious Runoff Depth>0.80" Tc=6.0 min CN=73 Runoff=2.30 cfs 0.101 of Link 3L: PRE Combined Inflow=9.67 cfs 0.504 of Primary=9.67 cfs 0.504 of Total Runoff Area = 16.270 ac Runoff Volume = 0.504 of Average Runoff Depth = 0.37" 95.57% Pervious = 15.550 ac 4.43% Impervious = 0.720 ac 2021-05-27 Full Routing Prepared by Timmons Gro Type 1124-hr 1-YR Rainfall=3.05" Printed 5/28/2021 Summary for Subcatchment 1S: PRE Onsite Runoff = 7.42 cfs @ 12.00 hrs, Volume= 0.404 af, Depth> 0.33" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24-hr 1-YR Rainfall=3.05 Area (ac) CN Description 0.210 98 Paved parking, HSG B 0.000 61 >75% Grass cover, Good, HSG B 14.540 60 Woods, Fair, HSG B 14.750 61 Weighted Average 14.540 98.58% Pervious Area 0.210 1.42% Impervious Area Tc Length Slope Velocity Capacity Description 6.0 Direct Entry, Subcatchment 1S: PRE Onsite Hydrograph ❑ RunoH Time (hours) 2021-05-27 Full Routing Prepared by Timmons Gro Type 1124-hr 1-YR Rainfa&3.05" Hydrograph for Subcatchment 1S: PRE Onsite Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 5.00 0.19 0.00 0.00 5.25 0.20 0.00 0.00 5.50 0.22 0.00 0.00 5.75 0.23 0.00 0.00 6.00 0.24 0.00 0.00 6.25 0.26 0.00 0.00 6.50 0.27 0.00 0.00 6.75 0.29 0.00 0.00 7.00 0.30 0.00 0.00 7.25 0.32 0.00 0.00 7.50 0.33 0.00 0.00 7.75 0.35 0.00 0.00 8.00 0.37 0.00 0.00 8.25 0.38 0.00 0.00 8.50 0.40 0.00 0.00 8.75 0.42 0.00 0.00 9.00 0.45 0.00 0.00 9.25 0.47 0.00 0.00 9.50 0.50 0.00 0.00 9.75 0.52 0.00 0.00 10.00 0.55 0.00 0.00 10.25 0.58 0.00 0.00 10.50 0.62 0.00 0.00 10.75 0.67 0.00 0.00 11.00 0.72 0.00 0.00 11.25 0.78 0.00 0.00 11.50 0.86 0.00 0.00 11.75 1.18 0.00 0.00 12.00 2.02 0.08 7.42 12.25 2.15 0.11 1.65 12.50 2.24 0.13 1.17 12.75 2.30 0.14 0.90 13.00 2.35 0.15 0.79 13.25 2.40 0.17 0.70 13.50 2.44 0.18 0.63 13.75 2.47 0.19 0.57 14.00 2.50 0.20 0.52 14.25 2.53 0.20 0.49 14.50 2.55 0.21 0.47 14.75 2.58 0.22 0.45 15.00 2.60 0.23 0.43 15.25 2.63 0.23 0.41 15.50 2.65 0.24 0.39 15.75 2.67 0.25 0.37 16.00 2.68 0.25 0.35 16.25 2.70 0.26 0.34 16.50 2.72 0.26 0.33 16.75 2.73 0.27 0.33 17.00 2.75 0.28 0.32 17.25 2.77 0.28 0.31 17.50 2.78 0.29 0.30 17.75 2.80 0.29 0.30 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 18.00 2.81 0.30 0.29 18.25 2.82 0.30 0.28 18.50 2.84 0.30 0.27 18.75 2.85 0.31 0.26 19.00 2.86 0.31 0.25 19.25 2.87 0.32 0.25 19.50 2.88 0.32 0.24 19.75 2.89 0.33 0.23 20.00 2.90 0.33 0.22 Printed 5/28/2021 2021-05-27 Full Routing Prepared by Timmons Gro Type 1124-hr 1-YR Rainfall=3.05" Printed 5/28/2021 Summary for Subcatchment 2S: Pre Offsite Runoff = 2.30 cfs @ 11.98 hrs, Volume= 0.101 af, Depth> 0.80" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24-hr 1-YR Rainfall=3.05 Area (ac) CN Description 0.510 98 Paved parking, HSG B 0.000 61 >75% Grass cover, Good, HSG B 1.010 60 Woods, Fair, HSG B 1.520 73 Weighted Average 1.010 66.45% Pervious Area 0.510 33.55% Impervious Area Tc Length Slope Velocity Capacity Description lminl lfaafl /ft/ft1 (ft/car) lrfcl 6.0 Direct Entry, Subcatchment 2S: Pre Offsite Hydrograph ■ Ruwff Type II 24-hr 2 4 I ^ I 1-YR Rainfall=3.05'T I Runoff Area=1.520 ac Runoff Volume=0.101 of Runoff Depth>0.80" II Tc=6.0 min 11 1 U 1 CN=73 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Time (hours) 2021-05-27 Full Routing Prepared by Timmons Gro Type 1124-hr 1-YR Rainfa&3.05" Hydrograph for Subcatchment 2S: Pre Mite Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 5.00 0.19 0.00 0.00 5.25 0.20 0.00 0.00 5.50 0.22 0.00 0.00 5.75 0.23 0.00 0.00 6.00 0.24 0.00 0.00 6.25 0.26 0.00 0.00 6.50 0.27 0.00 0.00 6.75 0.29 0.00 0.00 7.00 0.30 0.00 0.00 7.25 0.32 0.00 0.00 7.50 0.33 0.00 0.00 7.75 0.35 0.00 0.00 8.00 0.37 0.00 0.00 8.25 0.38 0.00 0.00 8.50 0.40 0.00 0.00 8.75 0.42 0.00 0.00 9.00 0.45 0.00 0.00 9.25 0.47 0.00 0.00 9.50 0.50 0.00 0.00 9.75 0.52 0.00 0.00 10.00 0.55 0.00 0.00 10.25 0.58 0.00 0.00 10.50 0.62 0.00 0.00 10.75 0.67 0.00 0.00 11.00 0.72 0.00 0.00 11.25 0.78 0.00 0.00 11.50 0.86 0.00 0.02 11.75 1.18 0.05 0.32 12.00 2.02 0.33 2.25 12.25 2.15 0.39 0.37 12.50 2.24 0.43 0.25 12.75 2.30 0.46 0.18 13.00 2.35 0.49 0.16 13.25 2.40 0.51 0.14 13.50 2.44 0.53 0.12 13.75 2.47 0.55 0.11 14.00 2.50 0.57 0.10 14.25 2.53 0.58 0.09 14.50 2.55 0.60 0.09 14.75 2.58 0.61 0.08 15.00 2.60 0.62 0.08 15.25 2.63 0.64 0.08 15.50 2.65 0.65 0.07 15.75 2.67 0.66 0.07 16.00 2.68 0.67 0.06 16.25 2.70 0.68 0.06 16.50 2.72 0.69 0.06 16.75 2.73 0.70 0.06 17.00 2.75 0.71 0.06 17.25 2.77 0.72 0.05 17.50 2.78 0.73 0.05 17.75 2.80 0.73 0.05 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 18.00 2.81 0.74 0.05 18.25 2.82 0.75 0.05 18.50 2.84 0.76 0.05 18.75 2.85 0.77 0.05 19.00 2.86 0.77 0.04 19.25 2.87 0.78 0.04 19.50 2.88 0.79 0.04 19.75 2.89 0.79 0.04 20.00 2.90 0.80 0.04 Printed 5/28/2021 2021-05-27 Full Routing Prepared by Timmons Gro Type 1124-hr 1-YR Rainfall=3.05" Printed 5/28/2021 Summary for Link 3L: PRE Combined Inflow Area = 16.270 ac, 4.43% Impervious, Inflow Depth > 0.37" for 1-YR event Inflow = 9.67 cfs @ 12.00 hrs, Volume= 0.504 of Primary = 9.67 cfs @ 12.00 hrs, Volume= 0.504 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Link 3L: PRE Combined Hydrograph FE ]—I n—fl.—. ❑ Primary Time (hours) 2021-05-27 Full Routing Prepared by Timmons Gro Type 1124-hr 1-YR Rainfa&3.05" Hydrograph for Link X: PRE Combined Time Inflow Elevation Primary (hours) (cfs) (feet) (cfs) 5.00 0.00 0.00 0.00 5.25 0.00 0.00 0.00 5.50 0.00 0.00 0.00 5.75 0.00 0.00 0.00 6.00 0.00 0.00 0.00 6.25 0.00 0.00 0.00 6.50 0.00 0.00 0.00 6.75 0.00 0.00 0.00 7.00 0.00 0.00 0.00 7.25 0.00 0.00 0.00 7.50 0.00 0.00 0.00 7.75 0.00 0.00 0.00 8.00 0.00 0.00 0.00 8.25 0.00 0.00 0.00 8.50 0.00 0.00 0.00 8.75 0.00 0.00 0.00 9.00 0.00 0.00 0.00 9.25 0.00 0.00 0.00 9.50 0.00 0.00 0.00 9.75 0.00 0.00 0.00 10.00 0.00 0.00 0.00 10.25 0.00 0.00 0.00 10.50 0.00 0.00 0.00 10.75 0.00 0.00 0.00 11.00 0.00 0.00 0.00 11.25 0.00 0.00 0.00 11.50 0.02 0.00 0.02 11.75 0.32 0.00 0.32 12.00 9.67 0.00 9.67 12.25 2.02 0.00 2.02 12.50 1.42 0.00 1.42 12.75 1.09 0.00 1.09 13.00 0.94 0.00 0.94 13.25 0.84 0.00 0.84 13.50 0.75 0.00 0.75 13.75 0.68 0.00 0.68 14.00 0.61 0.00 0.61 14.25 0.58 0.00 0.58 14.50 0.56 0.00 0.56 14.75 0.54 0.00 0.54 15.00 0.51 0.00 0.51 15.25 0.49 0.00 0.49 15.50 0.47 0.00 0.47 15.75 0.44 0.00 0.44 16.00 0.41 0.00 0.41 16.25 0.40 0.00 0.40 16.50 0.39 0.00 0.39 16.75 0.38 0.00 0.38 17.00 0.37 0.00 0.37 17.25 0.37 0.00 0.37 17.50 0.36 0.00 0.36 17.75 0.35 0.00 0.35 Time Inflow Elevation Primary (hours) (cfs) (feet) (cfs) 18.00 0.34 0.00 0.34 18.25 0.33 0.00 0.33 18.50 0.32 0.00 0.32 18.75 0.31 0.00 0.31 19.00 0.30 0.00 0.30 19.25 0.29 0.00 0.29 19.50 0.28 0.00 0.28 19.75 0.27 0.00 0.27 20.00 0.26 0.00 0.26 Printed 5/28/2021 2021-05-27 Full Routing Type // 24-hr 10-YR Rainfa//=5.58" Prepared by Timmons Group Printed 5/28/2021 HydroCADO 10.00-20 s/n 10074 © 2017 HydroCAD Software Solutions LLC Paoe 12 Time span=5.00-20.00 hrs, dt=0.05 hrs, 301 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CNI Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment 1S: PRE Onsite Runoff Area=14.750 ac 1.42% Impervious Runoff Depth>1.56" Tc=6.0 min CN=61 Runoff=43.82 cfs 1.914 of Subcatchment 2S: Pre Offsite Runoff Area=1.520 ac 33.55% Impervious Runoff Depth>2.52" Tc=6.0 min CN=73 Runoff=7.18 cfs 0.320 of Link 3L: PRE Combined Inflow=51.04 cfs 2.234 of Primary=51.04 cfs 2.234 of Total Runoff Area = 16.270 ac Runoff Volume = 2.234 of Average Runoff Depth = 1.65" 95.57% Pervious = 15.550 ac 4.43% Impervious = 0.720 ac 2021-05-27 Full Routing Prepared by Timmons Gro Type 1124-hr 10-YR Rainfa&5.58" Printed 5/28/2021 Summary for Subcatchment 1S: PRE Onsite Runoff = 43.82 cfs @ 11.98 hrs, Volume= 1.914 af, Depth> 1.56" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24-hr 10-YR Rainfall=5.58" Area (ac) CN Description 0.210 98 Paved parking, HSG B 0.000 61 >75% Grass cover, Good, HSG B 14.540 60 Woods, Fair, HSG B 14.750 61 Weighted Average 14.540 98.58% Pervious Area 0.210 1.42% Impervious Area Tc Length Slope Velocity Capacity Description 48 46 44 42 40 38 36 34 32 30 'm 28 26 24 LL 22 20 18 16 14 12 10 8 6 4 2 0 5 Direct Entry, Subcatchment 1S: PRE Onsite Hydrograph 6 7 8 9 10 11 12 13 Time (hours) Type II 24-hr 10-YR Rainfall=5.58" Runoff Area=14.750 ac Runoff Volume=1.914 of Runoff Depth>1.56" Tc=6.0 min CN=61 19 20 ❑ Runoff 2021-05-27 Full Routing Prepared by Timmons Gro Type 1124-hr 10-YR Rainfa&5.58" Hydrograph for Subcatchment 1S: PRE Onsite Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 5.00 0.35 0.00 0.00 5.25 0.37 0.00 0.00 5.50 0.40 0.00 0.00 5.75 0.42 0.00 0.00 6.00 0.45 0.00 0.00 6.25 0.47 0.00 0.00 6.50 0.50 0.00 0.00 6.75 0.52 0.00 0.00 7.00 0.55 0.00 0.00 7.25 0.58 0.00 0.00 7.50 0.61 0.00 0.00 7.75 0.64 0.00 0.00 8.00 0.67 0.00 0.00 8.25 0.70 0.00 0.00 8.50 0.74 0.00 0.00 8.75 0.78 0.00 0.00 9.00 0.82 0.00 0.00 9.25 0.86 0.00 0.00 9.50 0.91 0.00 0.00 9.75 0.96 0.00 0.00 10.00 1.01 0.00 0.00 10.25 1.07 0.00 0.00 10.50 1.14 0.00 0.00 10.75 1.22 0.00 0.00 11.00 1.31 0.00 0.01 11.25 1.43 0.00 0.23 11.50 1.58 0.01 0.66 11.75 2.16 0.11 6.78 12.00 3.70 0.66 42.62 12.25 3.94 0.78 6.87 12.50 4.10 0.86 4.60 12.75 4.21 0.92 3.44 13.00 4.31 0.97 2.93 13.25 4.39 1.02 2.56 13.50 4.46 1.06 2.27 13.75 4.52 1.09 2.03 14.00 4.58 1.12 1.82 14.25 4.63 1.15 1.69 14.50 4.67 1.18 1.62 14.75 4.72 1.20 1.55 15.00 4.76 1.23 1.47 15.25 4.80 1.25 1.40 15.50 4.84 1.27 1.32 15.75 4.88 1.30 1.24 16.00 4.91 1.32 1.16 16.25 4.94 1.33 1.12 16.50 4.97 1.35 1.09 16.75 5.00 1.37 1.06 17.00 5.03 1.39 1.04 17.25 5.06 1.41 1.01 17.50 5.09 1.42 0.98 17.75 5.11 1.44 0.95 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 18.00 5.14 1.45 0.92 18.25 5.16 1.47 0.89 18.50 5.19 1.48 0.87 18.75 5.21 1.50 0.84 19.00 5.23 1.51 0.81 19.25 5.25 1.52 0.78 19.50 5.27 1.54 0.75 19.75 5.29 1.55 0.72 20.00 5.31 1.56 0.68 Printed 5/28/2021 2021-05-27 Full Routing Prepared by Timmons Gro Type 1124-hr 10-YR Rainfa&5.58" Printed 5/28/2021 Summary for Subcatchment 2S: Pre Offsite Runoff = 7.18 cfs @ 11.97 hrs, Volume= 0.320 af, Depth> 2.52" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24-hr 10-YR Rainfall=5.58" Area (ac) CN Description 0.510 98 Paved parking, HSG B 0.000 61 >75% Grass cover, Good, HSG B 1.010 60 Woods, Fair, HSG B 1.520 73 Weighted Average 1.010 66.45% Pervious Area 0.510 33.55% Impervious Area Tc Length Slope Velocity Capacity Description lminl lfaafl /ft/ft1 (ft/car) lrfcl 6.0 Direct Entry, Subcatchment 2S: Pre Offsite Hydrograph 7 ' j Type II 24-hr - -- - 10-XR Rai fall=5.58" 6 Runoff �1rea�=1.�20 ac 5 RunoffVolume=0.320 of u 4 / Runoff D2. ,. I 3 CN=73 I f 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Time (hours) ❑ Runoff 2021-05-27 Full Routing Prepared by Timmons Gro Type 1124-hr 10-YR Rainfa&5.58" Hydrograph for Subcatchment 2S: Pre Mite Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 5.00 0.35 0.00 0.00 5.25 0.37 0.00 0.00 5.50 0.40 0.00 0.00 5.75 0.42 0.00 0.00 6.00 0.45 0.00 0.00 6.25 0.47 0.00 0.00 6.50 0.50 0.00 0.00 6.75 0.52 0.00 0.00 7.00 0.55 0.00 0.00 7.25 0.58 0.00 0.00 7.50 0.61 0.00 0.00 7.75 0.64 0.00 0.00 8.00 0.67 0.00 0.00 8.25 0.70 0.00 0.00 8.50 0.74 0.00 0.00 8.75 0.78 0.00 0.00 9.00 0.82 0.00 0.01 9.25 0.86 0.00 0.02 9.50 0.91 0.01 0.02 9.75 0.96 0.01 0.03 10.00 1.01 0.02 0.04 10.25 1.07 0.03 0.06 10.50 1.14 0.04 0.07 10.75 1.22 0.05 0.10 11.00 1.31 0.08 0.14 11.25 1.43 0.11 0.20 11.50 1.58 0.16 0.30 11.75 2.16 0.39 1.76 12.00 3.70 1.32 6.90 12.25 3.94 1.48 1.02 12.50 4.10 1.60 0.67 12.75 4.21 1.68 0.49 13.00 4.31 1.75 0.42 13.25 4.39 1.81 0.36 13.50 4.46 1.86 0.32 13.75 4.52 1.91 0.28 14.00 4.58 1.95 0.25 14.25 4.63 1.99 0.23 14.50 4.67 2.03 0.22 14.75 4.72 2.06 0.21 15.00 4.76 2.10 0.20 15.25 4.80 2.13 0.19 15.50 4.84 2.16 0.18 15.75 4.88 2.18 0.17 16.00 4.91 2.21 0.16 16.25 4.94 2.24 0.15 16.50 4.97 2.26 0.15 16.75 5.00 2.28 0.14 17.00 5.03 2.31 0.14 17.25 5.06 2.33 0.14 17.50 5.09 2.35 0.13 17.75 5.11 2.37 0.13 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 18.00 5.14 2.39 0.12 18.25 5.16 2.41 0.12 18.50 5.19 2.43 0.12 18.75 5.21 2.45 0.11 19.00 5.23 2.46 0.11 19.25 5.25 2.48 0.10 19.50 5.27 2.50 0.10 19.75 5.29 2.51 0.09 20.00 5.31 2.53 0.09 Printed 5/28/2021 2021-05-27 Full Routing Prepared by Timmons Gro Type 1124-hr 10-YR Rainfa&5.58" Printed 5/28/2021 Summary for Link 3L: PRE Combined Inflow Area = 16.270 ac, 4.43% Impervious, Inflow Depth > 1.65" for 10-YR event Inflow = 51.04 cfs @ 11.98 hrs, Volume= 2.234 of Primary = 51.04 cfs @ 11.98 hrs, Volume= 2.234 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Link 3L: PRE Combined Hydrograph FE ]—I n—flo—. ❑ Primary Time (hours) 2021-05-27 Full Routing Prepared by Timmons Gro Type 1124-hr 10-YR Rainfa&5.58" Hydrograph for Link X: PRE Combined Time Inflow Elevation Primary (hours) (cfs) (feet) (cfs) 5.00 0.00 0.00 0.00 5.25 0.00 0.00 0.00 5.50 0.00 0.00 0.00 5.75 0.00 0.00 0.00 6.00 0.00 0.00 0.00 6.25 0.00 0.00 0.00 6.50 0.00 0.00 0.00 6.75 0.00 0.00 0.00 7.00 0.00 0.00 0.00 7.25 0.00 0.00 0.00 7.50 0.00 0.00 0.00 7.75 0.00 0.00 0.00 8.00 0.00 0.00 0.00 8.25 0.00 0.00 0.00 8.50 0.00 0.00 0.00 8.75 0.00 0.00 0.00 9.00 0.01 0.00 0.01 9.25 0.02 0.00 0.02 9.50 0.02 0.00 0.02 9.75 0.03 0.00 0.03 10.00 0.04 0.00 0.04 10.25 0.06 0.00 0.06 10.50 0.07 0.00 0.07 10.75 0.10 0.00 0.10 11.00 0.15 0.00 0.15 11.25 0.43 0.00 0.43 11.50 0.96 0.00 0.96 11.75 8.54 0.00 8.54 12.00 49.52 0.00 49.52 12.25 7.89 0.00 7.89 12.50 5.27 0.00 5.27 12.75 3.94 0.00 3.94 13.00 3.35 0.00 3.35 13.25 2.92 0.00 2.92 13.50 2.59 0.00 2.59 13.75 2.31 0.00 2.31 14.00 2.07 0.00 2.07 14.25 1.92 0.00 1.92 14.50 1.84 0.00 1.84 14.75 1.76 0.00 1.76 15.00 1.68 0.00 1.68 15.25 1.59 0.00 1.59 15.50 1.50 0.00 1.50 15.75 1.41 0.00 1.41 16.00 1.32 0.00 1.32 16.25 1.27 0.00 1.27 16.50 1.24 0.00 1.24 16.75 1.21 0.00 1.21 17.00 1.18 0.00 1.18 17.25 1.14 0.00 1.14 17.50 1.11 0.00 1.11 17.75 1.08 0.00 1.08 Time Inflow Elevation Primary (hours) (cfs) (feet) (cfs) 18.00 1.05 0.00 1.05 18.25 1.01 0.00 1.01 18.50 0.98 0.00 0.98 18.75 0.95 0.00 0.95 19.00 0.91 0.00 0.91 19.25 0.88 0.00 0.88 19.50 0.84 0.00 0.84 19.75 0.81 0.00 0.81 20.00 0.78 0.00 0.78 Printed 5/28/2021 2021-05-27 Full Routing Type // 24-hr 100-YR Rainfall=9.16" Prepared by Timmons Group Printed 5/28/2021 HydroCADO 10.00-20 s/n 10074 © 2017 HydroCAD Software Solutions LLC Paoe 19 Time span=5.00-20.00 hrs, dt=0.05 hrs, 301 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CNI Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment 1S: PRE Onsite Runoff Area=14.750 ac 1.42% Impervious Runoff Depth>4.00" Tc=6.0 min CN=61 Runoff=110.65 cfs 4.912 of Subcatchment 2S: Pre Offsite Runoff Area=1.520 ac 33.55% Impervious Runoff Depth>5.45" Tc=6.0 min CN=73 Runoff=14.99 cfs 0.690 of Link 3L: PRE Combined Inflow=125.62 cfs 5.602 of Primary=125.62 cfs 5.602 of Total Runoff Area = 16.270 ac Runoff Volume = 5.602 of Average Runoff Depth = 4.13" 95.57% Pervious = 15.550 ac 4.43% Impervious = 0.720 ac 2021-05-27 Full Routing Prepared by Timmons Gro Type/1 24-hr 100-YR Rainfall=9.16" Printed 5/28/2021 Summary for Subcatchment 1S: PRE Onsite Runoff = 110.65 cfs @ 11.97 hrs, Volume= 4.912 af, Depth> 4.00" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24-hr 100-YR Rainfall=9.16" Area (ac) CN Description 0.210 98 Paved parking, HSG B 0.000 61 >75% Grass cover, Good, HSG B 14.540 60 Woods, Fair, HSG B 14.750 61 Weighted Average 14.540 98.58% Pervious Area 0.210 1.42% Impervious Area Tc Length Slope Velocity Capacity Description Direct Entry, Subcatchment 1S: PRE Onsite Hydrograph ■ Runoff _i i Type II 24-hr_ 100-YR Rainfall=9.16 Runoff Area=14.750 ac Runoff Volume=4.912 of Runoff Depth>4.00 -_ Tc=6.0 min CN=61 11 12 13 14 15 16 17 18 19 20 Time (hours) 2021-05-27 Full Routing Prepared by Timmons Gro Type/1 24-hr 100-YR Rainfall=9.16" Hydrograph for Subcatchment 1S: PRE Onsite Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 5.00 0.58 0.00 0.00 5.25 0.61 0.00 0.00 5.50 0.65 0.00 0.00 5.75 0.69 0.00 0.00 6.00 0.73 0.00 0.00 6.25 0.77 0.00 0.00 6.50 0.82 0.00 0.00 6.75 0.86 0.00 0.00 7.00 0.91 0.00 0.00 7.25 0.95 0.00 0.00 7.50 1.00 0.00 0.00 7.75 1.05 0.00 0.00 8.00 1.10 0.00 0.00 8.25 1.15 0.00 0.00 8.50 1.21 0.00 0.00 8.75 1.28 0.00 0.00 9.00 1.35 0.00 0.05 9.25 1.42 0.00 0.15 9.50 1.49 0.01 0.24 9.75 1.57 0.01 0.36 10.00 1.66 0.02 0.53 10.25 1.76 0.03 0.74 10.50 1.87 0.05 1.03 10.75 2.00 0.07 1.44 11.00 2.15 0.11 1.99 11.25 2.34 0.15 2.97 11.50 2.59 0.22 4.46 11.75 3.54 0.59 26.40 12.00 6.07 2.05 106.54 12.25 6.47 2.32 15.79 12.50 6.73 2.51 10.38 12.75 6.92 2.64 7.68 13.00 7.07 2.75 6.48 13.25 7.20 2.85 5.62 13.50 7.32 2.93 4.96 13.75 7.42 3.01 4.41 14.00 7.51 3.08 3.93 14.25 7.59 3.14 3.65 14.50 7.67 3.20 3.48 14.75 7.75 3.25 3.32 15.00 7.82 3.31 3.15 15.25 7.88 3.36 2.98 15.50 7.95 3.40 2.81 15.75 8.01 3.45 2.64 16.00 8.06 3.49 2.46 16.25 8.11 3.53 2.36 16.50 8.16 3.57 2.30 16.75 8.21 3.61 2.24 17.00 8.26 3.64 2.18 17.25 8.31 3.68 2.12 17.50 8.35 3.71 2.05 17.75 8.39 3.75 1.99 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 18.00 8.44 3.78 1.93 18.25 8.48 3.81 1.87 18.50 8.52 3.84 1.80 18.75 8.55 3.87 1.74 19.00 8.59 3.90 1.68 19.25 8.62 3.93 1.61 19.50 8.66 3.95 1.55 19.75 8.69 3.98 1.48 20.00 8.72 4.00 1.42 Printed 5/28/2021 2021-05-27 Full Routing Prepared by Timmons Gro Type/1 24-hr 100-YR Rainfall=9.16" Printed 5/28/2021 Summary for Subcatchment 2S: Pre Offsite Runoff = 14.99 cfs @ 11.97 hrs, Volume= 0.690 af, Depth> 5.45" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24-hr 100-YR Rainfall=9.16" Area (ac) CN Description 0.510 98 Paved parking, HSG B 0.000 61 >75% Grass cover, Good, HSG B 1.010 60 Woods, Fair, HSG B 1.520 73 Weighted Average 1.010 66.45% Pervious Area 0.510 33.55% Impervious Area Tc Length Slope Velocity Capacity Description lminl lfaafl /ft/ft1 (ft/car) lrkc 6.0 Direct Entry, Subcatchment 2S: Pre Offsite Hydrograph 15 Type II 24-hr 13 100-YR Rainfall=9.16" 12- Runoff Area=1.520 ac 11 Runoff Volume=0.690 of 19 9 Runoff Depth>5.45" a` LL 7 Tc=6.0 min 6' 5_ CN=73 I -4- 1 7 it 6 7 8 9 19 11 12 13 14 15 16 17 18 19 Time (hours) 0 Runoff 2021-05-27 Full Routing Prepared by Timmons Gro Type/1 24-hr 100-YR Rainfall=9.16" Hydrograph for Subcatchment 2S: Pre Mite Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 5.00 0.58 0.00 0.00 5.25 0.61 0.00 0.00 5.50 0.65 0.00 0.00 5.75 0.69 0.00 0.00 6.00 0.73 0.00 0.00 6.25 0.77 0.00 0.00 6.50 0.82 0.00 0.01 6.75 0.86 0.00 0.01 7.00 0.91 0.01 0.02 7.25 0.95 0.01 0.03 7.50 1.00 0.02 0.03 7.75 1.05 0.02 0.04 8.00 1.10 0.03 0.05 8.25 1.15 0.04 0.06 8.50 1.21 0.05 0.08 8.75 1.28 0.07 0.09 9.00 1.35 0.09 0.11 9.25 1.42 0.11 0.12 9.50 1.49 0.13 0.14 9.75 1.57 0.15 0.16 10.00 1.66 0.18 0.19 10.25 1.76 0.22 0.23 10.50 1.87 0.26 0.28 10.75 2.00 0.32 0.35 11.00 2.15 0.39 0.45 11.25 2.34 0.49 0.61 11.50 2.59 0.62 0.84 11.75 3.54 1.21 4.33 12.00 6.07 3.15 14.17 12.25 6.47 3.48 1.99 12.50 6.73 3.71 1.29 12.75 6.92 3.86 0.95 13.00 7.07 4.00 0.80 13.25 7.20 4.11 0.69 13.50 7.32 4.21 0.61 13.75 7.42 4.30 0.54 14.00 7.51 4.38 0.48 14.25 7.59 4.45 0.44 14.50 7.67 4.52 0.42 14.75 7.75 4.59 0.40 15.00 7.82 4.65 0.38 15.25 7.88 4.71 0.36 15.50 7.95 4.76 0.34 15.75 8.01 4.82 0.32 16.00 8.06 4.86 0.29 16.25 8.11 4.91 0.28 16.50 8.16 4.95 0.27 16.75 8.21 5.00 0.27 17.00 8.26 5.04 0.26 17.25 8.31 5.08 0.25 17.50 8.35 5.12 0.24 17.75 8.39 5.16 0.24 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 18.00 8.44 5.20 0.23 18.25 8.48 5.23 0.22 18.50 8.52 5.27 0.21 18.75 8.55 5.30 0.21 19.00 8.59 5.34 0.20 19.25 8.62 5.37 0.19 19.50 8.66 5.40 0.18 19.75 8.69 5.43 0.17 20.00 8.72 5.45 0.17 Printed 5/28/2021 2021-05-27 Full Routing Prepared by Timmons Gro Type/1 24-hr 100-YR Rainfall=9.16" Printed 5/28/2021 Summary for Link 3L: PRE Combined Inflow Area = 16.270 ac, 4.43% Impervious, Inflow Depth > 4.13" for 100-YR event Inflow = 125.62 cfs @ 11.97 hrs, Volume= 5.602 of Primary = 125.62 cfs @ 11.97 hrs, Volume= 5.602 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Link 3L: PRE Combined Hydrograph ■ Inflow ❑ Primary Time (hours) 2021-05-27 Full Routing Prepared by Timmons Gro Type/1 24-hr 100-YR Rainfall=9.16" Hydrograph for Link X: PRE Combined Time Inflow Elevation Primary (hours) (cfs) (feet) (cfs) 5.00 0.00 0.00 0.00 5.25 0.00 0.00 0.00 5.50 0.00 0.00 0.00 5.75 0.00 0.00 0.00 6.00 0.00 0.00 0.00 6.25 0.00 0.00 0.00 6.50 0.01 0.00 0.01 6.75 0.01 0.00 0.01 7.00 0.02 0.00 0.02 7.25 0.03 0.00 0.03 7.50 0.03 0.00 0.03 7.75 0.04 0.00 0.04 8.00 0.05 0.00 0.05 8.25 0.06 0.00 0.06 8.50 0.08 0.00 0.08 8.75 0.09 0.00 0.09 9.00 0.16 0.00 0.16 9.25 0.28 0.00 0.28 9.50 0.38 0.00 0.38 9.75 0.52 0.00 0.52 10.00 0.71 0.00 0.71 10.25 0.97 0.00 0.97 10.50 1.31 0.00 1.31 10.75 1.79 0.00 1.79 11.00 2.43 0.00 2.43 11.25 3.58 0.00 3.58 11.50 5.30 0.00 5.30 11.75 30.74 0.00 30.74 12.00 120.71 0.00 120.71 12.25 17.78 0.00 17.78 12.50 11.67 0.00 11.67 12.75 8.63 0.00 8.63 13.00 7.27 0.00 7.27 13.25 6.31 0.00 6.31 13.50 5.56 0.00 5.56 13.75 4.95 0.00 4.95 14.00 4.41 0.00 4.41 14.25 4.09 0.00 4.09 14.50 3.90 0.00 3.90 14.75 3.72 0.00 3.72 15.00 3.53 0.00 3.53 15.25 3.34 0.00 3.34 15.50 3.15 0.00 3.15 15.75 2.95 0.00 2.95 16.00 2.76 0.00 2.76 16.25 2.64 0.00 2.64 16.50 2.57 0.00 2.57 16.75 2.50 0.00 2.50 17.00 2.44 0.00 2.44 17.25 2.37 0.00 2.37 17.50 2.30 0.00 2.30 17.75 2.23 0.00 2.23 Time Inflow Elevation Primary (hours) (cfs) (feet) (cfs) 18.00 2.16 0.00 2.16 18.25 2.09 0.00 2.09 18.50 2.02 0.00 2.02 18.75 1.95 0.00 1.95 19.00 1.87 0.00 1.87 19.25 1.80 0.00 1.80 19.50 1.73 0.00 1.73 19.75 1.66 0.00 1.66 20.00 1.58 0.00 1.58 Printed 5/28/2021 9S To Dry P0\r43 10P 7S To Biorttion 2 8P BIORETENTION 2 11S Onsite l�nrouted 4 5S Offsite T Bioretention 1 4S Onsi To Bioretention �D 6 P ZBIORETENTION 1 POST Combined Onsite Unrouted 5 Subcat Reach Aon Llnk 2021-05-27 Full Routing Prepared by Timmons Gro Area Listing (selected nodes) Area CN Description (acres) (subcatchment-numbers) 5.840 61 >75% Grass cover, Good, HSG B (4S, 7S, 9S, 11S, 12S) 8.970 98 Paved parking, HSG B (4S, 5S, 7S, 9S, 11S, 12S) 1.490 60 Woods, Fair, HSG B (4S, 5S, 7S, 11S, 12S) 16.300 81 TOTAL AREA Printed 5/28/2021 2021-05-27 Full Routing Prepared by Timmons Gro Soil Listing (selected nodes) Area Soil Subcatchment (acres) Group Numbers 0.000 HSG A 16.300 HSG B 4S, 5S, 7S, 9S, 11S, 12S 0.000 HSG C 0.000 HSG D 0.000 Other 16.300 TOTAL AREA Printed 5/28/2021 2021-05-27 Full Routing Prepared by Timmons Gro Printed 5/28/2021 Ground Covers (selected nodes) HSG-A HSG-B HSG-C HSG-D Other Total Ground Subcatchment (acres) (acres) (acres) (acres) (acres) (acres) Cover Numbers 0.000 5.840 0.000 0.000 0.000 5.840 >75% Grass cover, Good 4S, 7S, 9S, 11S, 12S 0.000 8.970 0.000 0.000 0.000 8.970 Paved parking 4S, 5S, 7S, 9S, 11 S, 12S 0.000 1.490 0.000 0.000 0.000 1.490 Woods, Fair 4S, 5S, 7S, 11S, 12S 0.000 16.300 0.000 0.000 0.000 16.300 TOTAL AREA 2021-05-27 Full Routing Prepared by Timmons Gro Type 1124-hr 1-YR Rainfall=3.05" Printed 5/28/2021 Time span=5.00-20.00 hrs, dt=0.05 hrs, 301 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment 4S: Onsite To Bioretention 1 Runoff Area=4.480 ac 59.82% Impervious Runoff Depth>1.37" Tc=6.0 min CN=83 Runoff=11.48 cfs 0.510 of Subcatchment 5S: Offs ite To Bioretention 1 Runoff Area=1.520 ac 33.55% Impervious Runoff Depth>0.80" Tc=6.0 min CN=73 Runoff=2.30 cfs 0.101 of Subcatchment 7S: To Bioretention 2 Runoff Area=2.360 ac 58.05% Impervious Runoff Depth>1.30" Tc=6.0 min CN=82 Runoff=5.77 cfs 0.256 of Subcatchment 9S: To Dry Pond 3 Runoff Area=7.010 ac 60.49% Impervious Runoff Depth>1.37" Tc=6.0 min CN=83 Runoff=17.96 cfs 0.799 of Subcatchment 11S: Onsite Unrouted 4 Runoff Area=0.630 ac 17.46% Impervious Runoff Depth>0.54" Tc=6.0 min CN=67 Runoff=0.61 cfs 0.028 of Subcatchment 12S: Onsite Unrouted 5 Runoff Area=0.300 ac 20.00% Impervious Runoff Depth>0.58" Tc=6.0 min CN=68 Runoff=0.32 cfs 0.014 of Pond 6P: BIORETENTION 1 Peak Elev=415.12' Storage=15,593 cf Inflow=13.73 cfs 0.740 of Outflow=2.28 cfs 0.394 of Pond 8P: BIORETENTION 2 Peak EIev=432.01' Storage=5,734 cf Inflow=5.77 cfs 0.256 of Outflow=1.04 cfs 0.129 of Pond 10P: DRY POND Peak EIev=423.75' Storage=16,977 cf Inflow=17.96 cfs 0.799 of Outflow=1.33 cfs 0.761 of Link 13L: POST Combined Inflow=3.73 cfs 1.198 of Primary=3.73 cfs 1.198 of Total Runoff Area = 16.300 ac Runoff Volume = 1.709 of Average Runoff Depth = 1.26" 44.97% Pervious = 7.330 ac 55.03% Impervious = 8.970 ac 2021-05-27 Full Routing Prepared by Timmons Gro Type 1124-hr 1-YR Rainfall=3.05" Printed 5/28/2021 Summary for Subcatchment 4S: Onsite To Bioretention 1 Runoff = 11.48 cfs @ 11.97 hrs, Volume= 0.510 af, Depth> 1.37" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24-hr 1-YR Rainfall=3.05 Area (ac) CN Description 2.680 98 Paved parking, HSG B 1.540 61 >75% Grass cover, Good, HSG B 0.260 60 Woods, Fair, HSG B 4.480 83 Weighted Average 1.800 40.18% Pervious Area 2.680 59.82% Impervious Area Tc Length Slope Velocity Capacity Description in\ /foof\ /f1/41\ /ff/con\ /-fc\ 6.0 Direct Entry, Subcatchment 4S: Onsite To Bioretention 1 Hydrograph e Runoff 12 n98 dt 11 Type II 24-hr 10 1-YR Rainfall=3.05" 9 Runoff Area=4.480 ac 8 Runoff Volume=0.510 of 7 Runoff Depth>1.37" o 6 Tc=6.0 min_ LL 5 CN=83- 4 2 1 0 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Time (hours) 2021-05-27 Full Routing Prepared by Timmons Gro Type 1124-hr 1-YR Rainfa&3.05" Hydrograph for Subcatchment 4S: Onsite To Bioretention 1 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 5.00 0.19 0.00 0.00 5.25 0.20 0.00 0.00 5.50 0.22 0.00 0.00 5.75 0.23 0.00 0.00 6.00 0.24 0.00 0.00 6.25 0.26 0.00 0.00 6.50 0.27 0.00 0.00 6.75 0.29 0.00 0.00 7.00 0.30 0.00 0.00 7.25 0.32 0.00 0.00 7.50 0.33 0.00 0.00 7.75 0.35 0.00 0.00 8.00 0.37 0.00 0.00 8.25 0.38 0.00 0.00 8.50 0.40 0.00 0.00 8.75 0.42 0.00 0.00 9.00 0.45 0.00 0.01 9.25 0.47 0.00 0.02 9.50 0.50 0.00 0.03 9.75 0.52 0.01 0.04 10.00 0.55 0.01 0.06 10.25 0.58 0.01 0.09 10.50 0.62 0.02 0.12 10.75 0.67 0.03 0.16 11.00 0.72 0.04 0.22 11.25 0.78 0.06 0.32 11.50 0.86 0.08 0.48 11.75 1.18 0.21 2.79 12.00 2.02 0.71 11.03 12.25 2.15 0.80 1.63 12.50 2.24 0.87 1.07 12.75 2.30 0.91 0.79 13.00 2.35 0.95 0.67 13.25 2.40 0.98 0.58 13.50 2.44 1.01 0.51 13.75 2.47 1.03 0.45 14.00 2.50 1.06 0.40 14.25 2.53 1.08 0.37 14.50 2.55 1.10 0.36 14.75 2.58 1.12 0.34 15.00 2.60 1.13 0.32 15.25 2.63 1.15 0.31 15.50 2.65 1.17 0.29 15.75 2.67 1.18 0.27 16.00 2.68 1.20 0.25 16.25 2.70 1.21 0.24 16.50 2.72 1.22 0.24 16.75 2.73 1.24 0.23 17.00 2.75 1.25 0.22 17.25 2.77 1.26 0.22 17.50 2.78 1.27 0.21 17.75 2.80 1.28 0.20 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 18.00 2.81 1.29 0.20 18.25 2.82 1.31 0.19 18.50 2.84 1.32 0.18 18.75 2.85 1.33 0.18 19.00 2.86 1.33 0.17 19.25 2.87 1.34 0.17 19.50 2.88 1.35 0.16 19.75 2.89 1.36 0.15 20.00 2.90 1.37 0.15 Printed 5/28/2021 2021-05-27 Full Routing Prepared by Timmons Gro Type 1124-hr 1-YR Rainfall=3.05" Printed 5/28/2021 Summary for Subcatchment 5S: Mite To Bioretention 1 Runoff = 2.30 cfs @ 11.98 hrs, Volume= 0.101 af, Depth> 0.80" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24-hr 1-YR Rainfall=3.05 Area (ac) CN Description 0.510 98 Paved parking, HSG B 0.000 61 >75% Grass cover, Good, HSG B 1.010 60 Woods, Fair, HSG B 1.520 73 Weighted Average 1.010 66.45% Pervious Area 0.510 33.55% Impervious Area Tc Length Slope Velocity Capacity Description lminl lfaafl /ft/ft1 (ft/car) lrfcl 6.0 Direct Entry, Subcatchment 5S: Mite To Bioretention 1 Hydrograph ■ Ruwff Type II 24-hr 2 4 I ^ I 1-YR Rainfall=3.05'T I Runoff Area=1.520 ac Runoff Volume=0.101 of Runoff Depth>0.80" II Tc=6.0 min 11 1 U 1 CN=73 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Time (hours) 2021-05-27 Full Routing Prepared by Timmons Gro Type 1124-hr 1-YR Rainfa&3.05" Hydrograph for Subcatchment 5S: Offsite To Bioretention 1 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 5.00 0.19 0.00 0.00 5.25 0.20 0.00 0.00 5.50 0.22 0.00 0.00 5.75 0.23 0.00 0.00 6.00 0.24 0.00 0.00 6.25 0.26 0.00 0.00 6.50 0.27 0.00 0.00 6.75 0.29 0.00 0.00 7.00 0.30 0.00 0.00 7.25 0.32 0.00 0.00 7.50 0.33 0.00 0.00 7.75 0.35 0.00 0.00 8.00 0.37 0.00 0.00 8.25 0.38 0.00 0.00 8.50 0.40 0.00 0.00 8.75 0.42 0.00 0.00 9.00 0.45 0.00 0.00 9.25 0.47 0.00 0.00 9.50 0.50 0.00 0.00 9.75 0.52 0.00 0.00 10.00 0.55 0.00 0.00 10.25 0.58 0.00 0.00 10.50 0.62 0.00 0.00 10.75 0.67 0.00 0.00 11.00 0.72 0.00 0.00 11.25 0.78 0.00 0.00 11.50 0.86 0.00 0.02 11.75 1.18 0.05 0.32 12.00 2.02 0.33 2.25 12.25 2.15 0.39 0.37 12.50 2.24 0.43 0.25 12.75 2.30 0.46 0.18 13.00 2.35 0.49 0.16 13.25 2.40 0.51 0.14 13.50 2.44 0.53 0.12 13.75 2.47 0.55 0.11 14.00 2.50 0.57 0.10 14.25 2.53 0.58 0.09 14.50 2.55 0.60 0.09 14.75 2.58 0.61 0.08 15.00 2.60 0.62 0.08 15.25 2.63 0.64 0.08 15.50 2.65 0.65 0.07 15.75 2.67 0.66 0.07 16.00 2.68 0.67 0.06 16.25 2.70 0.68 0.06 16.50 2.72 0.69 0.06 16.75 2.73 0.70 0.06 17.00 2.75 0.71 0.06 17.25 2.77 0.72 0.05 17.50 2.78 0.73 0.05 17.75 2.80 0.73 0.05 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 18.00 2.81 0.74 0.05 18.25 2.82 0.75 0.05 18.50 2.84 0.76 0.05 18.75 2.85 0.77 0.05 19.00 2.86 0.77 0.04 19.25 2.87 0.78 0.04 19.50 2.88 0.79 0.04 19.75 2.89 0.79 0.04 20.00 2.90 0.80 0.04 Printed 5/28/2021 2021-05-27 Full Routing Prepared by Timmons Gro Type 1124-hr 1-YR Rainfall=3.05" Printed 5/28/2021 Summary for Subcatchment 7S: To Bioretention 2 Runoff = 5.77 cfs @ 11.97 hrs, Volume= 0.256 af, Depth> 1.30" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24-hr 1-YR Rainfall=3.05 Area (ac) CN Description 1.370 98 Paved parking, HSG B 0.950 61 >75% Grass cover, Good, HSG B 0.040 60 Woods, Fair, HSG B 2.360 82 Weighted Average 0.990 41.95% Pervious Area 1.370 58.05% Impervious Area Tc Length Slope Velocity Capacity Description 6.0 Direct Entry, Subcatchment 7S: To Bioretention 2 Hydrograph Time (hours) 2021-05-27 Full Routing Prepared by Timmons Gro Type 1124-hr 1-YR Rainfa&3.05" Hydrograph for Subcatchment 7S: To Bioretention 2 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 5.00 0.19 0.00 0.00 5.25 0.20 0.00 0.00 5.50 0.22 0.00 0.00 5.75 0.23 0.00 0.00 6.00 0.24 0.00 0.00 6.25 0.26 0.00 0.00 6.50 0.27 0.00 0.00 6.75 0.29 0.00 0.00 7.00 0.30 0.00 0.00 7.25 0.32 0.00 0.00 7.50 0.33 0.00 0.00 7.75 0.35 0.00 0.00 8.00 0.37 0.00 0.00 8.25 0.38 0.00 0.00 8.50 0.40 0.00 0.00 8.75 0.42 0.00 0.00 9.00 0.45 0.00 0.00 9.25 0.47 0.00 0.01 9.50 0.50 0.00 0.01 9.75 0.52 0.00 0.02 10.00 0.55 0.01 0.02 10.25 0.58 0.01 0.04 10.50 0.62 0.01 0.05 10.75 0.67 0.02 0.07 11.00 0.72 0.03 0.10 11.25 0.78 0.05 0.15 11.50 0.86 0.07 0.23 11.75 1.18 0.19 1.36 12.00 2.02 0.66 5.57 12.25 2.15 0.75 0.83 12.50 2.24 0.81 0.54 12.75 2.30 0.86 0.40 13.00 2.35 0.89 0.34 13.25 2.40 0.92 0.30 13.50 2.44 0.95 0.26 13.75 2.47 0.98 0.23 14.00 2.50 1.00 0.21 14.25 2.53 1.02 0.19 14.50 2.55 1.04 0.18 14.75 2.58 1.06 0.17 15.00 2.60 1.07 0.17 15.25 2.63 1.09 0.16 15.50 2.65 1.11 0.15 15.75 2.67 1.12 0.14 16.00 2.68 1.14 0.13 16.25 2.70 1.15 0.12 16.50 2.72 1.16 0.12 16.75 2.73 1.17 0.12 17.00 2.75 1.19 0.11 17.25 2.77 1.20 0.11 17.50 2.78 1.21 0.11 17.75 2.80 1.22 0.10 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 18.00 2.81 1.23 0.10 18.25 2.82 1.24 0.10 18.50 2.84 1.25 0.10 18.75 2.85 1.26 0.09 19.00 2.86 1.27 0.09 19.25 2.87 1.28 0.08 19.50 2.88 1.29 0.08 19.75 2.89 1.30 0.08 20.00 2.90 1.30 0.07 Printed 5/28/2021 2021-05-27 Full Routing Prepared by Timmons Gro Type 1124-hr 1-YR Rainfall=3.05" Printed 5/28/2021 Summary for Subcatchment 9S: To Dry Pond 3 Runoff = 17.96 cfs @ 11.97 hrs, Volume= 0.799 af, Depth> 1.37" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24-hr 1-YR Rainfall=3.05 Area (ac) CN Description 4.240 98 Paved parking, HSG B 2.770 61 >75% Grass cover, Good, HSG B 0.000 60 Woods, Fair, HSG B 7.010 83 Weighted Average 2.770 39.51 % Pervious Area 4.240 60.49% Impervious Area Tc Length Slope Velocity Capacity Description 19_ 18' 17 16 15[ Direct Entry, Subcatchment 9S: To Dry Pond 3 Hydrograph • ' 1 Runoff1 1 ac Runoff• 1 Runoff • ______■ MM ' =M 1 min ______■ �___ - ____■ ____ ______. ________ .. 6 7 8 9 1,0.. 1,1 12....1,3....1,4.. 15....1,6....1,7....18.. 1,9....2o Time (hours) ❑ Runoff 2021-05-27 Full Routing Prepared by Timmons Gro Type 1124-hr 1-YR Rainfa&3.05" Hydrograph for Subcatchment 9S: To Dry Pond 3 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 5.00 0.19 0.00 0.00 5.25 0.20 0.00 0.00 5.50 0.22 0.00 0.00 5.75 0.23 0.00 0.00 6.00 0.24 0.00 0.00 6.25 0.26 0.00 0.00 6.50 0.27 0.00 0.00 6.75 0.29 0.00 0.00 7.00 0.30 0.00 0.00 7.25 0.32 0.00 0.00 7.50 0.33 0.00 0.00 7.75 0.35 0.00 0.00 8.00 0.37 0.00 0.00 8.25 0.38 0.00 0.00 8.50 0.40 0.00 0.00 8.75 0.42 0.00 0.00 9.00 0.45 0.00 0.02 9.25 0.47 0.00 0.04 9.50 0.50 0.00 0.05 9.75 0.52 0.01 0.07 10.00 0.55 0.01 0.10 10.25 0.58 0.01 0.13 10.50 0.62 0.02 0.18 10.75 0.67 0.03 0.25 11.00 0.72 0.04 0.34 11.25 0.78 0.06 0.50 11.50 0.86 0.08 0.75 11.75 1.18 0.21 4.37 12.00 2.02 0.71 17.26 12.25 2.15 0.80 2.55 12.50 2.24 0.87 1.67 12.75 2.30 0.91 1.24 13.00 2.35 0.95 1.04 13.25 2.40 0.98 0.90 13.50 2.44 1.01 0.80 13.75 2.47 1.03 0.71 14.00 2.50 1.06 0.63 14.25 2.53 1.08 0.59 14.50 2.55 1.10 0.56 14.75 2.58 1.12 0.53 15.00 2.60 1.13 0.51 15.25 2.63 1.15 0.48 15.50 2.65 1.17 0.45 15.75 2.67 1.18 0.42 16.00 2.68 1.20 0.40 16.25 2.70 1.21 0.38 16.50 2.72 1.22 0.37 16.75 2.73 1.24 0.36 17.00 2.75 1.25 0.35 17.25 2.77 1.26 0.34 17.50 2.78 1.27 0.33 17.75 2.80 1.28 0.32 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 18.00 2.81 1.29 0.31 18.25 2.82 1.31 0.30 18.50 2.84 1.32 0.29 18.75 2.85 1.33 0.28 19.00 2.86 1.33 0.27 19.25 2.87 1.34 0.26 19.50 2.88 1.35 0.25 19.75 2.89 1.36 0.24 20.00 2.90 1.37 0.23 Printed 5/28/2021 2021-05-27 Full Routing Prepared by Timmons Gro Type 1124-hr 1-YR Rainfall=3.05" Printed 5/28/2021 Summary for Subcatchment 11S: Onsite Unrouted 4 Runoff = 0.61 cfs @ 11.99 hrs, Volume= 0.028 af, Depth> 0.54" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24-hr 1-YR Rainfall=3.05 Area (ac) CN Description 0.110 98 Paved parking, HSG B 0.380 61 >75% Grass cover, Good, HSG B 0.140 60 Woods, Fair, HSG B 0.630 67 Weighted Average 0.520 82.54% Pervious Area 0.110 17.46% Impervious Area Tc Length Slope Velocity Capacity Description /min\ /foof\ /f1/41\ /ffloon\ /-fc\ 6.0 Direct Entry, Subcatchment 11S: Onsite Unrouted 4 Hydrograph ■ Ruwff Time (hours) 2021-05-27 Full Routing Prepared by Timmons Gro Type 1124-hr 1-YR Rainfa&3.05" Hydrograph for Subcatchment 11S: Onsite Unrouted 4 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 5.00 0.19 0.00 0.00 5.25 0.20 0.00 0.00 5.50 0.22 0.00 0.00 5.75 0.23 0.00 0.00 6.00 0.24 0.00 0.00 6.25 0.26 0.00 0.00 6.50 0.27 0.00 0.00 6.75 0.29 0.00 0.00 7.00 0.30 0.00 0.00 7.25 0.32 0.00 0.00 7.50 0.33 0.00 0.00 7.75 0.35 0.00 0.00 8.00 0.37 0.00 0.00 8.25 0.38 0.00 0.00 8.50 0.40 0.00 0.00 8.75 0.42 0.00 0.00 9.00 0.45 0.00 0.00 9.25 0.47 0.00 0.00 9.50 0.50 0.00 0.00 9.75 0.52 0.00 0.00 10.00 0.55 0.00 0.00 10.25 0.58 0.00 0.00 10.50 0.62 0.00 0.00 10.75 0.67 0.00 0.00 11.00 0.72 0.00 0.00 11.25 0.78 0.00 0.00 11.50 0.86 0.00 0.00 11.75 1.18 0.01 0.02 12.00 2.02 0.18 0.61 12.25 2.15 0.22 0.11 12.50 2.24 0.26 0.08 12.75 2.30 0.28 0.06 13.00 2.35 0.30 0.05 13.25 2.40 0.32 0.04 13.50 2.44 0.33 0.04 13.75 2.47 0.34 0.03 14.00 2.50 0.36 0.03 14.25 2.53 0.37 0.03 14.50 2.55 0.38 0.03 14.75 2.58 0.39 0.03 15.00 2.60 0.40 0.03 15.25 2.63 0.41 0.02 15.50 2.65 0.42 0.02 15.75 2.67 0.43 0.02 16.00 2.68 0.44 0.02 16.25 2.70 0.44 0.02 16.50 2.72 0.45 0.02 16.75 2.73 0.46 0.02 17.00 2.75 0.47 0.02 17.25 2.77 0.47 0.02 17.50 2.78 0.48 0.02 17.75 2.80 0.49 0.02 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 18.00 2.81 0.49 0.02 18.25 2.82 0.50 0.02 18.50 2.84 0.51 0.02 18.75 2.85 0.51 0.01 19.00 2.86 0.52 0.01 19.25 2.87 0.52 0.01 19.50 2.88 0.53 0.01 19.75 2.89 0.53 0.01 20.00 2.90 0.54 0.01 Printed 5/28/2021 2021-05-27 Full Routing Prepared by Timmons Gro Type 1124-hr 1-YR Rainfall=3.05" Printed 5/28/2021 Summary for Subcatchment 12S: Onsite Unrouted 5 Runoff = 0.32 cfs @ 11.99 hrs, Volume= 0.014 af, Depth> 0.58" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24-hr 1-YR Rainfall=3.05 Area (ac) CN Description 0.060 98 Paved parking, HSG B 0.200 61 >75% Grass cover, Good, HSG B 0.040 60 Woods, Fair, HSG B 0.300 68 Weighted Average 0.240 80.00% Pervious Area 0.060 20.00% Impervious Area Tc Length Slope Velocity Capacity Description 6.0 Direct Entry, Subcatchment 12S: Onsite Unrouted 5 Hydrograph ■ ■ ■ ■ ■ ■ ■ ■ I Time (hours) ■ Ruff 2021-05-27 Full Routing Prepared by Timmons Gro Type 1124-hr 1-YR Rainfa&3.05" Hydrograph for Subcatchment 12S: Onsite Unrouted 5 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 5.00 0.19 0.00 0.00 5.25 0.20 0.00 0.00 5.50 0.22 0.00 0.00 5.75 0.23 0.00 0.00 6.00 0.24 0.00 0.00 6.25 0.26 0.00 0.00 6.50 0.27 0.00 0.00 6.75 0.29 0.00 0.00 7.00 0.30 0.00 0.00 7.25 0.32 0.00 0.00 7.50 0.33 0.00 0.00 7.75 0.35 0.00 0.00 8.00 0.37 0.00 0.00 8.25 0.38 0.00 0.00 8.50 0.40 0.00 0.00 8.75 0.42 0.00 0.00 9.00 0.45 0.00 0.00 9.25 0.47 0.00 0.00 9.50 0.50 0.00 0.00 9.75 0.52 0.00 0.00 10.00 0.55 0.00 0.00 10.25 0.58 0.00 0.00 10.50 0.62 0.00 0.00 10.75 0.67 0.00 0.00 11.00 0.72 0.00 0.00 11.25 0.78 0.00 0.00 11.50 0.86 0.00 0.00 11.75 1.18 0.01 0.02 12.00 2.02 0.20 0.31 12.25 2.15 0.25 0.06 12.50 2.24 0.28 0.04 12.75 2.30 0.31 0.03 13.00 2.35 0.33 0.02 13.25 2.40 0.34 0.02 13.50 2.44 0.36 0.02 13.75 2.47 0.38 0.02 14.00 2.50 0.39 0.02 14.25 2.53 0.40 0.01 14.50 2.55 0.41 0.01 14.75 2.58 0.42 0.01 15.00 2.60 0.43 0.01 15.25 2.63 0.44 0.01 15.50 2.65 0.45 0.01 15.75 2.67 0.46 0.01 16.00 2.68 0.47 0.01 16.25 2.70 0.48 0.01 16.50 2.72 0.49 0.01 16.75 2.73 0.49 0.01 17.00 2.75 0.50 0.01 17.25 2.77 0.51 0.01 17.50 2.78 0.52 0.01 17.75 2.80 0.52 0.01 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 18.00 2.81 0.53 0.01 18.25 2.82 0.54 0.01 18.50 2.84 0.54 0.01 18.75 2.85 0.55 0.01 19.00 2.86 0.56 0.01 19.25 2.87 0.56 0.01 19.50 2.88 0.57 0.01 19.75 2.89 0.57 0.01 20.00 2.90 0.58 0.01 Printed 5/28/2021 2021-05-27 Full Routing Prepared by Timmons Gro Type 1124-hr 1-YR Rainfall=3.05" Summary for Pond 6P: BIORETENTION 1 Printed 5/28/2021 Inflow Area = 8.360 ac, 54.55% Impervious, Inflow Depth > 1.06" for 1-YR event Inflow = 13.73 cfs @ 11.97 hrs, Volume= 0.740 of Outflow = 2.28 cfs @ 12.41 hrs, Volume= 0.394 af, Atten= 83%, Lag= 26.4 min Primary = 2.28 cfs @ 12.41 hrs, Volume= 0.394 of Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Peak Elev= 415.12' @ 12.41 hrs Surf.Area= 5,344 sf Storage= 15,593 cf Plug -Flow detention time= 178.5 min calculated for 0.394 of (53% of inflow) Center -of -Mass det. time= 87.0 min ( 894.5 - 807.6) Volume Invert Avail.Storage Storage Description #1 406.00' 32,374 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Voids Inc.Store Cum.Store (feet) (sq-ft) M (cubic -feet) (cubic -feet) 406.00 3,808 0.0 0 0 411.00 3,808 40.0 7,616 7,616 414.00 3,808 25.0 2,856 10,472 415.00 5,174 100.0 4,491 14,963 416.00 6,596 100.0 5,885 20,848 417.50 8,772 100.0 11,526 32,374 Device Routing Invert Outlet Devices #1 Primary 409.71' 36.0" Round HDPE_Round 36" L= 47.6' RCP, sq.cut end projecting, Ke= 0.500 Inlet / Outlet Invert= 409.71' / 409.00' S= 0.0149 '/' Cc= 0.900 n= 0.010 PVC, smooth interior, Flow Area= 7.07 sf #2 Device 1 415.00' 60.0" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #3 Primary 415.70' 95.0' long x 1.0' breadth Broad -Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 Coef. (English) 2.69 2.72 2.75 2.85 2.98 3.08 3.20 3.28 3.31 3.30 3.31 3.32 Primary OutFlow Max=2.11 cfs @ 12.41 hrs HW=415.12' (Free Discharge) 1'�--3=Broad-C 1=HDPERound 36" (Passes 2.11 cfs of 67.29 cfs potential flow) 2=Orifice/Grate (Weir Controls 2.11 cfs @ 1.13 fps) rested Rectangular Weir ( Controls 0.00 cfs) 2021-05-27 Full Routing Prepared by Timmons Gro Pond 6P: BIORETENTION 1 Hydrograph Type 1124-hr 1-YR Rainta&3.05" Printed 5/28/2021 ® Inflow.1 ac -- mo C 0 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Time )hours) Pond 6P: BIORETENTION 1 Stage -Discharge Discharge (cfs) ❑ Inflow ❑ Primary ❑ Primary 2021-05-27 Full Routing Prepared by Timmons Grc Pond 6P: BIORETENTION 1 Stage -Area -Storage Storage (cubic -feet) Type 11 24-hr 1-YR Rainfall=3.05" Printed 5/28/2021 ■ Surface ■ Storage 2021-05-27 Full Routing Prepared by Timmons Gro Type 1124-hr 1-YR Rainfa&3.05" Hydrograph for Pond 6P: BIORETENTION 1 Time Inflow Storage Elevation Primary (hours) (cfs) (cubic -feet) (feet) (cfs) 5.00 0.00 0 406.00 0.00 5.50 0.00 0 406.00 0.00 6.00 0.00 0 406.00 0.00 6.50 0.00 0 406.00 0.00 7.00 0.00 0 406.00 0.00 7.50 0.00 0 406.00 0.00 8.00 0.00 0 406.00 0.00 8.50 0.00 0 406.00 0.00 9.00 0.01 7 406.00 0.00 9.50 0.03 47 406.03 0.00 10.00 0.06 129 406.08 0.00 10.50 0.12 285 406.19 0.00 11.00 0.22 576 406.38 0.00 11.50 0.50 1,182 406.78 0.00 12.00 13.28 9,946 413.45 0.00 12.50 1.91 15,557 415.11 2.08 13.00 1.18 15,398 415.08 1.24 13.50 0.90 15,295 415.06 0.95 14.00 0.72 15,225 415.05 0.75 14.50 0.63 15,188 415.04 0.64 15.00 0.57 15,167 415.04 0.58 15.50 0.51 15,145 415.03 0.52 16.00 0.45 15,124 415.03 0.46 16.50 0.42 15,110 415.03 0.42 17.00 0.39 15,103 415.03 0.40 17.50 0.37 15,095 415.03 0.38 18.00 0.35 15,087 415.02 0.35 18.50 0.33 15,079 415.02 0.33 19.00 0.30 15,071 415.02 0.31 19.50 0.28 15,063 415.02 0.29 20.00 0.26 15,055 415.02 0.26 Printed 5/28/2021 2021-05-27 Full Routing Prepared by Timmons Gro Elevation Primary (feet) (cfs) 406.00 0.00 406.06 0.00 406.12 0.00 406.18 0.00 406.24 0.00 406.30 0.00 406.36 0.00 406.42 0.00 406.48 0.00 406.54 0.00 406.60 0.00 406.66 0.00 406.72 0.00 406.78 0.00 406.84 0.00 406.90 0.00 406.96 0.00 407.02 0.00 407.08 0.00 407.14 0.00 407.20 0.00 407.26 0.00 407.32 0.00 407.38 0.00 407.44 0.00 407.50 0.00 407.56 0.00 407.62 0.00 407.68 0.00 407.74 0.00 407.80 0.00 407.86 0.00 407.92 0.00 407.98 0.00 408.04 0.00 408.10 0.00 408.16 0.00 408.22 0.00 408.28 0.00 408.34 0.00 408.40 0.00 408.46 0.00 408.52 0.00 408.58 0.00 408.64 0.00 408.70 0.00 408.76 0.00 408.82 0.00 408.88 0.00 408.94 0.00 409.00 0.00 409.06 0.00 Type 1124-hr 1-YR Rainfa&3.05" Stage -Discharge for Pond 6P: BIORETENTION 1 Elevation Primary (feet) (cfs) 409.12 0.00 409.18 0.00 409.24 0.00 409.30 0.00 409.36 0.00 409.42 0.00 409.48 0.00 409.54 0.00 409.60 0.00 409.66 0.00 409.72 0.00 409.78 0.00 409.84 0.00 409.90 0.00 409.96 0.00 410.02 0.00 410.08 0.00 410.14 0.00 410.20 0.00 410.26 0.00 410.32 0.00 410.38 0.00 410.44 0.00 410.50 0.00 410.56 0.00 410.62 0.00 410.68 0.00 410.74 0.00 410.80 0.00 410.86 0.00 410.92 0.00 410.98 0.00 411.04 0.00 411.10 0.00 411.16 0.00 411.22 0.00 411.28 0.00 411.34 0.00 411.40 0.00 411.46 0.00 411.52 0.00 411.58 0.00 411.64 0.00 411.70 0.00 411.76 0.00 411.82 0.00 411.88 0.00 411.94 0.00 412.00 0.00 412.06 0.00 412.12 0.00 412.18 0.00 Elevation Primary (feet) (cfs) 412.24 0.00 412.30 0.00 412.36 0.00 412.42 0.00 412.48 0.00 412.54 0.00 412.60 0.00 412.66 0.00 412.72 0.00 412.78 0.00 412.84 0.00 412.90 0.00 412.96 0.00 413.02 0.00 413.08 0.00 413.14 0.00 413.20 0.00 413.26 0.00 413.32 0.00 413.38 0.00 413.44 0.00 413.50 0.00 413.56 0.00 413.62 0.00 413.68 0.00 413.74 0.00 413.80 0.00 413.86 0.00 413.92 0.00 413.98 0.00 414.04 0.00 414.10 0.00 414.16 0.00 414.22 0.00 414.28 0.00 414.34 0.00 414.40 0.00 414.46 0.00 414.52 0.00 414.58 0.00 414.64 0.00 414.70 0.00 414.76 0.00 414.82 0.00 414.88 0.00 414.94 0.00 415.00 0.00 415.06 0.75 415.12 2.14 415.18 3.92 415.24 6.04 415.30 8.44 Printed 5/28/2021 Elevation Primary (feet) (cfs) 415.36 11.09 415.42 13.98 415.48 17.08 415.54 20.38 415.60 23.87 415.66 27.54 415.72 32.10 415.78 41.17 415.84 52.93 415.90 66.71 415.96 82.31 416.02 99.48 416.08 118.11 416.14 138.10 416.20 159.38 416.26 181.89 416.32 204.94 416.38 226.01 416.44 248.37 416.50 272.01 416.56 297.61 416.62 324.62 416.68 353.05 416.74 382.31 416.80 412.56 416.86 444.09 416.92 477.15 416.98 512.09 417.04 548.43 417.10 586.18 417.16 623.34 417.22 661.67 417.28 701.19 417.34 739.89 417.40 778.51 417.46 817.97 2021-05-27 Full Routing Prepared by Timmons Gro Type 1124-hr 1-YR Rainfa&3.05" Stage -Area -Storage for Pond 6P: BIORETENTION 1 Elevation Surface Storage (feet) (sq-ft) (cubic -feet) 406.00 3,808 0 406.15 3,808 228 406.30 3,808 457 406.45 3,808 685 406.60 3,808 914 406.75 3,808 1,142 406.90 3,808 1,371 407.05 3,808 1,599 407.20 3,808 1,828 407.35 3,808 2,056 407.50 3,808 2,285 407.65 3,808 2,513 407.80 3,808 2,742 407.95 3,808 2,970 408.10 3,808 3,199 408.25 3,808 3,427 408.40 3,808 3,656 408.55 3,808 3,884 408.70 3,808 4,113 408.85 3,808 4,341 409.00 3,808 4,570 409.15 3,808 4,798 409.30 3,808 5,027 409.45 3,808 5,255 409.60 3,808 5,484 409.75 3,808 5,712 409.90 3,808 5,940 410.05 3,808 6,169 410.20 3,808 6,397 410.35 3,808 6,626 410.50 3,808 6,854 410.65 3,808 7,083 410.80 3,808 7,311 410.95 3,808 7,540 411.10 3,808 7,711 411.25 3,808 7,854 411.40 3,808 7,997 411.55 3,808 8,140 411.70 3,808 8,282 411.85 3,808 8,425 412.00 3,808 8,568 412.15 3,808 8,711 412.30 3,808 8,854 412.45 3,808 8,996 412.60 3,808 9,139 412.75 3,808 9,282 412.90 3,808 9,425 413.05 3,808 9,568 413.20 3,808 9,710 413.35 3,808 9,853 413.50 3,808 9,996 413.65 3,808 10,139 Elevation Surface Storage (feet) (sq-ft) (cubic -feet) 413.80 3,808 10,282 413.95 3,808 10,424 414.10 3,945 10,860 414.25 4,150 11,467 414.40 4,354 12,104 414.55 4,559 12,773 414.70 4,764 13,472 414.85 4,969 14,202 415.00 5,174 14,963 415.15 5,387 15,755 415.30 5,601 16,579 415.45 5,814 17,435 415.60 6,027 18,323 415.75 6,241 19,243 415.90 6,454 20,196 416.05 6,669 21,180 416.20 6,886 22,196 416.35 7,104 23,245 416.50 7,321 24,327 416.65 7,539 25,442 416.80 7,757 26,589 416.95 7,974 27,769 417.10 8,192 28,981 417.25 8,409 30,226 417.40 8,627 31,504 Printed 5/28/2021 2021-05-27 Full Routing Prepared by Timmons Gro Type 1124-hr 1-YR Rainfall=3.05" Summary for Pond 8P: BIORETENTION 2 Printed 5/28/2021 Inflow Area = 2.360 ac, 58.05% Impervious, Inflow Depth > 1.30" for 1-YR event Inflow = 5.77 cfs @ 11.97 hrs, Volume= 0.256 of Outflow = 1.04 cfs @ 12.19 hrs, Volume= 0.129 af, Atten= 82%, Lag= 13.0 min Primary = 1.04 cfs @ 12.19 hrs, Volume= 0.129 of Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Peak Elev= 432.01' @ 12.19 hrs Surf.Area= 2,045 sf Storage= 5,734 cf Plug -Flow detention time= 166.0 min calculated for 0.129 of (50% of inflow) Center -of -Mass det. time= 84.0 min ( 875.8 - 791.8 ) Volume Invert Avail.Storage Storage Description #1 423.91' 10,323 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Voids Inc.Store Cum.Store (feet) (sq-ft) M (cubic -feet) (cubic -feet) 423.91 1,587 0.0 0 0 427.91 1,587 40.0 2,539 2,539 430.91 1,587 25.0 1,190 3,729 431.00 1,627 100.0 145 3,874 432.00 2,041 100.0 1,834 5,708 433.00 2,350 100.0 2,196 7,904 434.00 2,489 100.0 2,420 10,323 Device Routino Invert Outlet Devices #1 Primary 424.43' 18.0" Round HDPE_Round 18" L= 61.4' RCP, sq.cut end projecting, Ke= 0.500 Inlet / Outlet Invert= 424.43' / 423.82' S= 0.0099 '/' Cc= 0.900 n= 0.010 PVC, smooth interior, Flow Area= 1.77 sf #2 Device 1 431.91' 36.0" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads Primary OutFlow Max=1.00 cfs @ 12.19 hrs HW=432.01' (Free Discharge) L1=HDPE_Round 18" (Passes 1.00 cfs of 22.24 cfs potential flow) t2=Orifice/Grate (Weir Controls 1.00 cfs @ 1.04 fps) 2021-05-27 Full Routing Prepared by Timmons Gro 0 5 W Type 1124-hr 1-YR Rainta&3.05" Printed 5/28/2021 C Paae 25 Pond 8P: BIORETENTION 2 Hydrograph .Inflow• 1 ... (I ac Peak Elev=432.01' soon ■ M■ NONE 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Time (hours) Pond 8P: BIORETENTION 2 Stage -Discharge Discharge (cfs) ❑ Inflow ❑ Primary ■ Primary 2021-05-27 Full Routing Prepared by Timmons Gro 434 _ 433- 432 431_ 430- p 429- m d 428- W 427- 426 425- 424- Type 1124-hr 1-YR Rainta&3.05" Printed 5/28/2021 Pond 8P: BIORETENTION 2 Stage -Area -Storage Surface/Horizontal/Wetted Area (sq-ft) n Inn Ann nnn nn A nnn A 9nn 4 Ann 4 ¢nn 4 Cnn 7 nnn I Onn O nnn 1NINON■�■■ polo ,10111 Mom IMEN IMMIMM11 I■■■1■I■IN ■�■�■■�� I■■■1■I■IN ' ■,■I■■11 I■■■1■I■I, ■,■I■■11 I■■■1■I■I, 0 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10,000 Storage (cubic -feet) ❑ Surface ❑ Storage 2021-05-27 Full Routing Prepared by Timmons Gro Type 1124-hr 1-YR Rainfa&3.05" Hydrograph for Pond 8P: BIORETENTION 2 Time Inflow Storage Elevation Primary (hours) (cfs) (cubic -feet) (feet) (cfs) 5.00 0.00 0 423.91 0.00 5.50 0.00 0 423.91 0.00 6.00 0.00 0 423.91 0.00 6.50 0.00 0 423.91 0.00 7.00 0.00 0 423.91 0.00 7.50 0.00 0 423.91 0.00 8.00 0.00 0 423.91 0.00 8.50 0.00 0 423.91 0.00 9.00 0.00 0 423.91 0.00 9.50 0.01 9 423.92 0.00 10.00 0.02 39 423.97 0.00 10.50 0.05 104 424.07 0.00 11.00 0.10 233 424.28 0.00 11.50 0.23 509 424.71 0.00 12.00 5.57 4,250 431.22 0.00 12.50 0.54 5,671 431.98 0.59 13.00 0.34 5,613 431.95 0.36 13.50 0.26 5,592 431.94 0.27 14.00 0.21 5,578 431.94 0.21 14.50 0.18 5,571 431.93 0.19 15.00 0.17 5,567 431.93 0.17 15.50 0.15 5,563 431.93 0.15 16.00 0.13 5,558 431.93 0.13 16.50 0.12 5,556 431.92 0.12 17.00 0.11 5,554 431.92 0.12 17.50 0.11 5,553 431.92 0.11 18.00 0.10 5,551 431.92 0.10 18.50 0.10 5,549 431.92 0.10 19.00 0.09 5,548 431.92 0.09 19.50 0.08 5,546 431.92 0.08 20.00 0.07 5,545 431.92 0.08 Printed 5/28/2021 2021-05-27 Full Routing Prepared by Timmons Gro Elevation Primary (feet) (cfs) 423.91 0.00 423.97 0.00 424.03 0.00 424.09 0.00 424.15 0.00 424.21 0.00 424.27 0.00 424.33 0.00 424.39 0.00 424.45 0.00 424.51 0.00 424.57 0.00 424.63 0.00 424.69 0.00 424.75 0.00 424.81 0.00 424.87 0.00 424.93 0.00 424.99 0.00 425.05 0.00 425.11 0.00 425.17 0.00 425.23 0.00 425.29 0.00 425.35 0.00 425.41 0.00 425.47 0.00 425.53 0.00 425.59 0.00 425.65 0.00 425.71 0.00 425.77 0.00 425.83 0.00 425.89 0.00 425.95 0.00 426.01 0.00 426.07 0.00 426.13 0.00 426.19 0.00 426.25 0.00 426.31 0.00 426.37 0.00 426.43 0.00 426.49 0.00 426.55 0.00 426.61 0.00 426.67 0.00 426.73 0.00 426.79 0.00 426.85 0.00 426.91 0.00 426.97 0.00 Type 11 24-hr 1-YR Rainfall=3.05" Stage -Discharge for Pond 8P: BIORETENTION 2 Elevation Primary (feet) (cfs) 427.03 0.00 427.09 0.00 427.15 0.00 427.21 0.00 427.27 0.00 427.33 0.00 427.39 0.00 427.45 0.00 427.51 0.00 427.57 0.00 427.63 0.00 427.69 0.00 427.75 0.00 427.81 0.00 427.87 0.00 427.93 0.00 427.99 0.00 428.05 0.00 428.11 0.00 428.17 0.00 428.23 0.00 428.29 0.00 428.35 0.00 428.41 0.00 428.47 0.00 428.53 0.00 428.59 0.00 428.65 0.00 428.71 0.00 428.77 0.00 428.83 0.00 428.89 0.00 428.95 0.00 429.01 0.00 429.07 0.00 429.13 0.00 429.19 0.00 429.25 0.00 429.31 0.00 429.37 0.00 429.43 0.00 429.49 0.00 429.55 0.00 429.61 0.00 429.67 0.00 429.73 0.00 429.79 0.00 429.85 0.00 429.91 0.00 429.97 0.00 430.03 0.00 430.09 0.00 Elevation Primary (feet) (cfs) 430.15 0.00 430.21 0.00 430.27 0.00 430.33 0.00 430.39 0.00 430.45 0.00 430.51 0.00 430.57 0.00 430.63 0.00 430.69 0.00 430.75 0.00 430.81 0.00 430.87 0.00 430.93 0.00 430.99 0.00 431.05 0.00 431.11 0.00 431.17 0.00 431.23 0.00 431.29 0.00 431.35 0.00 431.41 0.00 431.47 0.00 431.53 0.00 431.59 0.00 431.65 0.00 431.71 0.00 431.77 0.00 431.83 0.00 431.89 0.00 431.95 0.25 432.01 0.97 432.07 1.97 432.13 3.18 432.19 4.57 432.25 6.11 432.31 7.80 432.37 9.62 432.43 11.56 432.49 13.61 432.55 15.78 432.61 18.05 432.67 20.42 432.73 22.88 432.79 23.47 432.85 23.56 432.91 23.66 432.97 23.75 433.03 23.84 433.09 23.93 433.15 24.02 433.21 24.11 Printed 5/28/2021 Elevation Primary (feet) (cfs) 433.27 24.20 433.33 24.29 433.39 24.38 433.45 24.47 433.51 24.56 433.57 24.65 433.63 24.73 433.69 24.82 433.75 24.91 433.81 25.00 433.87 25.08 433.93 25.17 433.99 25.26 2021-05-27 Full Routing Prepared by Timmons Gro Type 1124-hr 1-YR Rainfa&3.05" Stage -Area -Storage for Pond 8P: BIORETENTION 2 Elevation Surface Storage (feet) (sq-ft) (cubic -feet) 423.91 1,587 0 424.06 1,587 95 424.21 1,587 190 424.36 1,587 286 424.51 1,587 381 424.66 1,587 476 424.81 1,587 571 424.96 1,587 667 425.11 1,587 762 425.26 1,587 857 425.41 1,587 952 425.56 1,587 1,047 425.71 1,587 1,143 425.86 1,587 1,238 426.01 1,587 1,333 426.16 1,587 1,428 426.31 1,587 1,524 426.46 1,587 1,619 426.61 1,587 1,714 426.76 1,587 1,809 426.91 1,587 1,904 427.06 1,587 2,000 427.21 1,587 2,095 427.36 1,587 2,190 427.51 1,587 2,285 427.66 1,587 2,381 427.81 1,587 2,476 427.96 1,587 2,559 428.11 1,587 2,619 428.26 1,587 2,678 428.41 1,587 2,738 428.56 1,587 2,797 428.71 1,587 2,857 428.86 1,587 2,916 429.01 1,587 2,976 429.16 1,587 3,035 429.31 1,587 3,095 429.46 1,587 3,154 429.61 1,587 3,214 429.76 1,587 3,273 429.91 1,587 3,333 430.06 1,587 3,392 430.21 1,587 3,452 430.36 1,587 3,511 430.51 1,587 3,571 430.66 1,587 3,630 430.81 1,587 3,690 430.96 1,609 3,809 431.11 1,673 4,056 431.26 1,735 4,311 431.41 1,797 4,576 431.56 1,859 4,850 Elevation Surface Storage (feet) (sq-ft) (cubic -feet) 431.71 1,921 5,134 431.86 1,983 5,426 432.01 2,044 5,729 432.16 2,090 6,039 432.31 2,137 6,356 432.46 2,183 6,680 432.61 2,229 7,011 432.76 2,276 7,348 432.91 2,322 7,693 433.06 2,358 8,045 433.21 2,379 8,400 433.36 2,400 8,759 433.51 2,421 9,120 433.66 2,442 9,485 433.81 2,463 9,853 433.96 2,483 10,224 Printed 5/28/2021 2021-05-27 Full Routing Prepared by Timmons Gro Type 1124-hr 1-YR Rainfall=3.05" Summary for Pond 10P: DRY POND Printed 5/28/2021 Inflow Area = 7.010 ac, 60.49% Impervious, Inflow Depth > 1.37" for 1-YR event Inflow = 17.96 cfs @ 11.97 hrs, Volume= 0.799 of Outflow = 1.33 cfs @ 12.65 hrs, Volume= 0.761 af, Atten= 93%, Lag= 40.7 min Primary = 1.33 cfs @ 12.65 hrs, Volume= 0.761 of Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Peak Elev= 423.75' @ 12.65 hrs Surf.Area= 5,290 sf Storage= 16,977 cf Plug -Flow detention time= 144.0 min calculated for 0.761 of (95% of inflow) Center -of -Mass det. time= 126.3 min ( 915.5 - 789.3 ) Volume Invert Avail.Storage Storage Description #1 418.00' 33,448 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic -feet) (cubic -feet) 418.00 1,082 0 0 419.00 1,611 1,347 1,347 420.00 2,218 1,915 3,261 421.00 2,905 2,562 5,823 422.00 3,711 3,308 9,131 423.00 4,590 4,151 13,281 424.00 5,526 5,058 18,339 424.10 5,622 557 18,896 425.00 5,935 5,201 24,097 426.00 6,368 6,152 30,249 426.50 6,431 3,200 33,448 Device Routing Invert Outlet Devices #1 Primary 417.90' 24.0" Round Culvert L= 117.9' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 417.90' / 417.01' S= 0.0075 '/' Cc= 0.900 n= 0.010 PVC, smooth interior, Flow Area= 3.14 sf #2 Device 1 418.00' 4.0" W x 4.2" H Vert. Orifice/Grate C= 0.600 #3 Device 1 423.92' 60.0" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #4 Primary 424.99' 45.0' long x 5.0' breadth Broad -Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 Primary OutFlow Max=1.33 cfs @ 12.65 hrs HW=423.75' (Free Discharge) 1=Culvert (Passes 1.33 cfs of 33.31 cfs potential flow) �2=Orifice/Grate (Orifice Controls 1.33 cfs @ 11.37 fps) 3=Orifice/Grate ( Controls 0.00 cfs) =Broad -Crested Rectangular Weir ( Controls 0.00 cfs) 2021-05-27 Full Routing Prepared by Timmons Grc Pond 10P: DRY POND Hydrograph Time (hours) Pond 10P: DRY POND Stage -Discharge Discharge (ds) Type 1124-hr 1-YR Rainfall=3.05" Printed 5/28/2021 ■ Inflow ■ Primary ❑ Primary 2021-05-27 Full Routing Prepared by Timmons Grc Pond 10P: DRY POND Stage -Area -Storage Surface/Horizontal/Wetted Area (sq-ft) Type 1124-hr 1-YR Rainfall=3.05" Printed 5/28/2021 ■ Surface ■ Storage 2021-05-27 Full Routing Prepared by Timmons Gro Type 1124-hr 1-YR Rainfa&3.05" Hydrograph for Pond 10P: DRY POND Time Inflow Storage Elevation Primary (hours) (cfs) (cubic -feet) (feet) (cfs) 5.00 0.00 0 418.00 0.00 5.50 0.00 0 418.00 0.00 6.00 0.00 0 418.00 0.00 6.50 0.00 0 418.00 0.00 7.00 0.00 0 418.00 0.00 7.50 0.00 0 418.00 0.00 8.00 0.00 0 418.00 0.00 8.50 0.00 0 418.00 0.00 9.00 0.02 10 418.01 0.00 9.50 0.05 57 418.05 0.02 10.00 0.10 134 418.12 0.05 10.50 0.18 245 418.21 0.11 11.00 0.34 414 418.35 0.22 11.50 0.75 809 418.65 0.38 12.00 17.26 11,382 422.57 1.18 12.50 1.67 16,903 423.73 1.32 13.00 1.04 16,794 423.71 1.32 13.50 0.80 16,062 423.57 1.30 14.00 0.63 15,013 423.36 1.28 14.50 0.56 13,797 423.11 1.25 15.00 0.51 12,541 422.84 1.21 15.50 0.45 11,255 422.54 1.17 16.00 0.40 9,944 422.21 1.13 16.50 0.37 8,639 421.87 1.08 17.00 0.35 7,391 421.50 1.02 17.50 0.33 6,210 421.13 0.97 18.00 0.31 5,105 420.75 0.90 18.50 0.29 4,086 420.35 0.83 19.00 0.27 3,167 419.96 0.75 19.50 0.25 2,360 419.57 0.66 20.00 0.23 1,679 419.20 0.57 Printed 5/28/2021 2021-05-27 Full Routing Prepared by Timmons Gro Elevation Primary (feet) (cfs) 418.00 0.00 418.10 0.03 418.20 0.10 418.30 0.18 418.40 0.26 418.50 0.32 418.60 0.36 418.70 0.41 418.80 0.44 418.90 0.48 419.00 0.51 419.10 0.54 419.20 0.57 419.30 0.60 419.40 0.62 419.50 0.65 419.60 0.67 419.70 0.69 419.80 0.72 419.90 0.74 420.00 0.76 420.10 0.78 420.20 0.80 420.30 0.82 420.40 0.84 420.50 0.86 420.60 0.87 420.70 0.89 420.80 0.91 420.90 0.93 421.00 0.94 421.10 0.96 421.20 0.98 421.30 0.99 421.40 1.01 421.50 1.02 421.60 1.04 421.70 1.05 421.80 1.07 421.90 1.08 422.00 1.10 422.10 1.11 422.20 1.13 422.30 1.14 422.40 1.15 422.50 1.17 422.60 1.18 422.70 1.19 422.80 1.21 422.90 1.22 423.00 1.23 423.10 1.25 Type 1124-hr 1-YR Rainfa&3.05" Stage -Discharge for Pond 10P: DRY POND Elevation Primary (feet) (cfs) 423.20 1.26 423.30 1.27 423.40 1.28 423.50 1.30 423.60 1.31 423.70 1.32 423.80 1.33 423.90 1.34 424.00 2.52 424.10 5.29 424.20 8.99 424.30 13.42 424.40 18.48 424.50 24.10 424.60 30.23 424.70 36.43 424.80 36.74 424.90 37.05 425.00 37.47 425.10 41.51 425.20 48.14 425.30 57.13 425.40 68.22 425.50 81.64 425.60 97.02 425.70 111.84 425.80 127.65 425.90 144.71 426.00 162.67 426.10 181.05 426.20 200.16 426.30 220.25 426.40 241.08 426.50 262.97 Printed 5/28/2021 2021-05-27 Full Routing Prepared by Timmons Gro Type 1124-hr 1-YR Rainfa&3.05" Stage -Area -Storage for Pond 10P: DRY POND Elevation Surface Storage (feet) (sq-ft) (cubic -feet) 418.00 1,082 0 418.10 1,135 ill 418.20 1,188 227 418.30 1,241 348 418.40 1,294 475 418.50 1,347 607 418.60 1,399 744 418.70 1,452 887 418.80 1,505 1,035 418.90 1,558 1,188 419.00 1,611 1,347 419.10 1,672 1,511 419.20 1,732 1,681 419.30 1,793 1,857 419.40 1,854 2,039 419.50 1,915 2,228 419.60 1,975 2,422 419.70 2,036 2,623 419.80 2,097 2,830 419.90 2,157 3,042 420.00 2,218 3,261 420.10 2,287 3,486 420.20 2,355 3,718 420.30 2,424 3,957 420.40 2,493 4,203 420.50 2,562 4,456 420.60 2,630 4,715 420.70 2,699 4,982 420.80 2,768 5,255 420.90 2,836 5,535 421.00 2,905 5,823 421.10 2,986 6,117 421.20 3,066 6,420 421.30 3,147 6,730 421.40 3,227 7,049 421.50 3,308 7,376 421.60 3,389 7,711 421.70 3,469 8,053 421.80 3,550 8,404 421.90 3,630 8,763 422.00 3,711 9,131 422.10 3,799 9,506 422.20 3,887 9,890 422.30 3,975 10,283 422.40 4,063 10,685 422.50 4,151 11,096 422.60 4,238 11,515 422.70 4,326 11,944 422.80 4,414 12,381 422.90 4,502 12,826 423.00 4,590 13,281 423.10 4,684 13,745 Elevation Surface Storage (feet) (sq-ft) (cubic -feet) 423.20 4,777 14,218 423.30 4,871 14,700 423.40 4,964 15,192 423.50 5,058 15,693 423.60 5,152 16,203 423.70 5,245 16,723 423.80 5,339 17,253 423.90 5,432 17,791 424.00 5,526 18,339 424.10 5,622 18,896 424.20 5,657 19,460 424.30 5,692 20,028 424.40 5,726 20,599 424.50 5,761 21,173 424.60 5,796 21,751 424.70 5,831 22,332 424.80 5,865 22,917 424.90 5,900 23,505 425.00 5,935 24,097 425.10 5,978 24,693 425.20 6,022 25,293 425.30 6,065 25,897 425.40 6,108 26,506 425.50 6,152 27,119 425.60 6,195 27,736 425.70 6,238 28,358 425.80 6,281 28,984 425.90 6,325 29,614 426.00 6,368 30,249 426.10 6,381 30,886 426.20 6,393 31,525 426.30 6,406 32,165 426.40 6,418 32,806 426.50 6,431 33,448 Printed 5/28/2021 2021-05-27 Full Routing Prepared by Timmons Gro Type 1124-hr 1-YR Rainfall=3.05" Printed 5/28/2021 Summary for Link 13L: POST Combined Inflow Area = 16.300 ac, 55.03% Impervious, Inflow Depth > 0.88" for 1-YR event Inflow = 3.73 cfs @ 12.41 hrs, Volume= 1.198 of Primary = 3.73 cfs @ 12.41 hrs, Volume= 1.198 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Link 13L: POST Combined Hydrograph ❑ Inflow ❑ Primary Time )hours) 2021-05-27 Full Routing Prepared by Timmons Gro Type 1124-hr 1-YR Rainfa&3.05" Hydrograph for Link 13L: POST Combined Time Inflow Elevation Primary (hours) (cfs) (feet) (cfs) 5.00 0.00 0.00 0.00 5.25 0.00 0.00 0.00 5.50 0.00 0.00 0.00 5.75 0.00 0.00 0.00 6.00 0.00 0.00 0.00 6.25 0.00 0.00 0.00 6.50 0.00 0.00 0.00 6.75 0.00 0.00 0.00 7.00 0.00 0.00 0.00 7.25 0.00 0.00 0.00 7.50 0.00 0.00 0.00 7.75 0.00 0.00 0.00 8.00 0.00 0.00 0.00 8.25 0.00 0.00 0.00 8.50 0.00 0.00 0.00 8.75 0.00 0.00 0.00 9.00 0.00 0.00 0.00 9.25 0.01 0.00 0.01 9.50 0.02 0.00 0.02 9.75 0.03 0.00 0.03 10.00 0.05 0.00 0.05 10.25 0.07 0.00 0.07 10.50 0.11 0.00 0.11 10.75 0.16 0.00 0.16 11.00 0.22 0.00 0.22 11.25 0.29 0.00 0.29 11.50 0.38 0.00 0.38 11.75 0.67 0.00 0.67 12.00 2.10 0.00 2.10 12.25 1.64 0.00 1.64 12.50 3.51 0.00 3.51 12.75 2.88 0.00 2.88 13.00 2.64 0.00 2.64 13.25 2.45 0.00 2.45 13.50 2.31 0.00 2.31 13.75 2.18 0.00 2.18 14.00 2.08 0.00 2.08 14.25 1.99 0.00 1.99 14.50 1.93 0.00 1.93 14.75 1.88 0.00 1.88 15.00 1.83 0.00 1.83 15.25 1.78 0.00 1.78 15.50 1.73 0.00 1.73 15.75 1.68 0.00 1.68 16.00 1.62 0.00 1.62 16.25 1.57 0.00 1.57 16.50 1.53 0.00 1.53 16.75 1.49 0.00 1.49 17.00 1.45 0.00 1.45 17.25 1.41 0.00 1.41 17.50 1.37 0.00 1.37 17.75 1.33 0.00 1.33 Time Inflow Elevation Primary (hours) (cfs) (feet) (cfs) 18.00 1.28 0.00 1.28 18.25 1.23 0.00 1.23 18.50 1.18 0.00 1.18 18.75 1.13 0.00 1.13 19.00 1.08 0.00 1.08 19.25 1.03 0.00 1.03 19.50 0.97 0.00 0.97 19.75 0.91 0.00 0.91 20.00 0.85 0.00 0.85 Printed 5/28/2021 2021-05-27 Full Routing Prepared by Timmons Gro Type 1124-hr 10-YR Rainfa&5.58" Printed 5/28/2021 Time span=5.00-20.00 hrs, dt=0.05 hrs, 301 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment 4S: Onsite To Bioretention 1 Runoff Area=4.480 ac 59.82% Impervious Runoff Depth>3.45" Tc=6.0 min CN=83 Runoff=27.80 cfs 1.289 of Subcatchment 5S: Offsite To Bioretention 1 Runoff Area=1.520 ac 33.55% Impervious Runoff Depth>2.52" Tc=6.0 min CN=73 Runoff=7.18 cfs 0.320 of Subcatchment 7S: To Bioretention 2 Runoff Area=2.360 ac 58.05% Impervious Runoff Depth>3.36" Tc=6.0 min CN=82 Runoff=14.31 cfs 0.660 of Subcatchment 9S: To Dry Pond 3 Runoff Area=7.010 ac 60.49% Impervious Runoff Depth>3.45" Tc=6.0 min CN=83 Runoff=43.50 cfs 2.017 of Subcatchment 11S: Onsite Unrouted 4 Runoff Area=0.630 ac 17.46% Impervious Runoff Depth>2.02" Tc=6.0 min CN=67 Runoff=2.43 cfs 0.106 of Subcatchment 12S: Onsite Unrouted 5 Runoff Area=0.300 ac 20.00% Impervious Runoff Depth>2.10" Tc=6.0 min CN=68 Runoff=1.20 cfs 0.053 of Pond 6P: BIORETENTION 1 Peak Elev=415.82' Storage=19,664 cf Inflow=48.60 cfs 2.141 of Outflow=48.74 cfs 1.793 of Pond 8P: BIORETENTION 2 Peak EIev=432.50' Storage=6,776 cf Inflow=14.31 cfs 0.660 of Outflow=14.11 cfs 0.532 of Pond 10P: DRY POND Peak EIev=424.87' Storage=23,332 cf Inflow=43.50 cfs 2.017 of Outflow=37.11 cfs 1.829 of Link 13L: POST Combined Inflow=88.93 cfs 3.781 of Primary=88.93 cfs 3.781 of Total Runoff Area = 16.300 ac Runoff Volume = 4.445 of Average Runoff Depth = 3.27" 44.97% Pervious = 7.330 ac 55.03% Impervious = 8.970 ac 2021-05-27 Full Routing Prepared by Timmons Gro Type 1124-hr 10-YR Rainfa&5.58" Printed 5/28/2021 Summary for Subcatchment 4S: Onsite To Bioretention 1 Runoff = 27.80 cfs @ 11.97 hrs, Volume= 1.289 af, Depth> 3.45" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24-hr 10-YR Rainfall=5.58" Area (ac) CN Description 2.680 98 Paved parking, HSG B 1.540 61 >75% Grass cover, Good, HSG B 0.260 60 Woods, Fair, HSG B 4.480 83 Weighted Average 1.800 40.18% Pervious Area 2.680 59.82% Impervious Area Tc Length Slope Velocity Capacity Description 6.0 Direct Entry, Subcatchment 4S: Onsite To Bioretention 1 Hydrograph ■ Runoff 28 273D as --, 26 Type II 24-hr 24 10-YR Rainfall=5.58" 22 Runoff Area=4.480 ac 20 — -- — ---- -- 'Runoff Volume=1.289af 18 16 Runoff Depth>3.45" 14 % Tc=6.0 min_ 12 CN=83 6 7 8 9 10 11 12 13 Time (hours) 2021-05-27 Full Routing Prepared by Timmons Gro Type 1124-hr 10-YR Rainfa&5.58" Hydrograph for Subcatchment 4S: Onsite To Bioretention 1 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 5.00 0.35 0.00 0.00 5.25 0.37 0.00 0.00 5.50 0.40 0.00 0.00 5.75 0.42 0.00 0.00 6.00 0.45 0.00 0.01 6.25 0.47 0.00 0.02 6.50 0.50 0.00 0.03 6.75 0.52 0.01 0.05 7.00 0.55 0.01 0.06 7.25 0.58 0.01 0.07 7.50 0.61 0.02 0.08 7.75 0.64 0.02 0.10 8.00 0.67 0.03 0.11 8.25 0.70 0.04 0.13 8.50 0.74 0.05 0.16 8.75 0.78 0.06 0.20 9.00 0.82 0.07 0.23 9.25 0.86 0.08 0.26 9.50 0.91 0.10 0.28 9.75 0.96 0.12 0.32 10.00 1.01 0.14 0.38 10.25 1.07 0.16 0.46 10.50 1.14 0.19 0.56 10.75 1.22 0.23 0.70 11.00 1.31 0.28 0.87 11.25 1.43 0.34 1.19 11.50 1.58 0.43 1.62 11.75 2.16 0.81 8.22 12.00 3.70 2.03 26.20 12.25 3.94 2.23 3.66 12.50 4.10 2.37 2.37 12.75 4.21 2.47 1.74 13.00 4.31 2.56 1.46 13.25 4.39 2.63 1.26 13.50 4.46 2.69 1.11 13.75 4.52 2.74 0.98 14.00 4.58 2.79 0.87 14.25 4.63 2.84 0.81 14.50 4.67 2.88 0.77 14.75 4.72 2.92 0.73 15.00 4.76 2.96 0.69 15.25 4.80 3.00 0.65 15.50 4.84 3.03 0.62 15.75 4.88 3.06 0.58 16.00 4.91 3.09 0.54 16.25 4.94 3.12 0.51 16.50 4.97 3.15 0.50 16.75 5.00 3.18 0.49 17.00 5.03 3.20 0.47 17.25 5.06 3.23 0.46 17.50 5.09 3.25 0.45 17.75 5.11 3.28 0.43 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 18.00 5.14 3.30 0.42 18.25 5.16 3.32 0.40 18.50 5.19 3.34 0.39 18.75 5.21 3.37 0.38 19.00 5.23 3.39 0.36 19.25 5.25 3.40 0.35 19.50 5.27 3.42 0.33 19.75 5.29 3.44 0.32 20.00 5.31 3.46 0.30 Printed 5/28/2021 2021-05-27 Full Routing Prepared by Timmons Gro Type 1124-hr 10-YR Rainfa&5.58" Printed 5/28/2021 fl.._.. Summary for Subcatchment 5S: Mite To Bioretention 1 Runoff = 7.18 cfs @ 11.97 hrs, Volume= 0.320 af, Depth> 2.52" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24-hr 10-YR Rainfall=5.58" Area (ac) CN Description 0.510 98 Paved parking, HSG B 0.000 61 >75% Grass cover, Good, HSG B 1.010 60 Woods, Fair, HSG B 1.520 73 Weighted Average 1.010 66.45% Pervious Area 0.510 33.55% Impervious Area Tc Length Slope Velocity Capacity Description lminl lfaafl /ft/ft1 (ft/car) lrfcl 6.0 Direct Entry, Subcatchment 5S: Mite To Bioretention 1 Hydrograph 7 ' j Type II 24-hr - -- - 10-XR Rai fa11=5.58" 6 Runoff �1rea�=1.�20 ac 5 RunoffVofume=0.320 of u 4 / Runoff D2. ,. I 3 CN=73 I f 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Time (hours) ❑ RunoH 2021-05-27 Full Routing Prepared by Timmons Gro Type 1124-hr 10-YR Rainfa&5.58" Hydrograph for Subcatchment 5S: Offsite To Bioretention 1 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 5.00 0.35 0.00 0.00 5.25 0.37 0.00 0.00 5.50 0.40 0.00 0.00 5.75 0.42 0.00 0.00 6.00 0.45 0.00 0.00 6.25 0.47 0.00 0.00 6.50 0.50 0.00 0.00 6.75 0.52 0.00 0.00 7.00 0.55 0.00 0.00 7.25 0.58 0.00 0.00 7.50 0.61 0.00 0.00 7.75 0.64 0.00 0.00 8.00 0.67 0.00 0.00 8.25 0.70 0.00 0.00 8.50 0.74 0.00 0.00 8.75 0.78 0.00 0.00 9.00 0.82 0.00 0.01 9.25 0.86 0.00 0.02 9.50 0.91 0.01 0.02 9.75 0.96 0.01 0.03 10.00 1.01 0.02 0.04 10.25 1.07 0.03 0.06 10.50 1.14 0.04 0.07 10.75 1.22 0.05 0.10 11.00 1.31 0.08 0.14 11.25 1.43 0.11 0.20 11.50 1.58 0.16 0.30 11.75 2.16 0.39 1.76 12.00 3.70 1.32 6.90 12.25 3.94 1.48 1.02 12.50 4.10 1.60 0.67 12.75 4.21 1.68 0.49 13.00 4.31 1.75 0.42 13.25 4.39 1.81 0.36 13.50 4.46 1.86 0.32 13.75 4.52 1.91 0.28 14.00 4.58 1.95 0.25 14.25 4.63 1.99 0.23 14.50 4.67 2.03 0.22 14.75 4.72 2.06 0.21 15.00 4.76 2.10 0.20 15.25 4.80 2.13 0.19 15.50 4.84 2.16 0.18 15.75 4.88 2.18 0.17 16.00 4.91 2.21 0.16 16.25 4.94 2.24 0.15 16.50 4.97 2.26 0.15 16.75 5.00 2.28 0.14 17.00 5.03 2.31 0.14 17.25 5.06 2.33 0.14 17.50 5.09 2.35 0.13 17.75 5.11 2.37 0.13 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 18.00 5.14 2.39 0.12 18.25 5.16 2.41 0.12 18.50 5.19 2.43 0.12 18.75 5.21 2.45 0.11 19.00 5.23 2.46 0.11 19.25 5.25 2.48 0.10 19.50 5.27 2.50 0.10 19.75 5.29 2.51 0.09 20.00 5.31 2.53 0.09 Printed 5/28/2021 2021-05-27 Full Routing Prepared by Timmons Gro Type 1124-hr 10-YR Rainfa&5.58" Printed 5/28/2021 Summary for Subcatchment 7S: To Bioretention 2 Runoff = 14.31 cfs @ 11.97 hrs, Volume= 0.660 af, Depth> 3.36" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24-hr 10-YR Rainfall=5.58" Area (ac) CN Description 1.370 98 Paved parking, HSG B 0.950 61 >75% Grass cover, Good, HSG B 0.040 60 Woods, Fair, HSG B 2.360 82 Weighted Average 0.990 41.95% Pervious Area 1.370 58.05% Impervious Area Tc Length Slope Velocity Capacity Description 16 15 14 13 12 11 10 'm 9 3 8 E 7 6 5 4 3 2 1 0 5 6 7 Direct Entry, Subcatchment 7S: To Bioretention 2 Hydrograph 10 11 12 13 Time (hours) Type II 24-hr 10-YR Rainfall=5.58" Runoff Area=2.360 ac Runoff Volume=0.660 of - - Runoff Depth>3.36" Tc=6.0 min CN=82 19 ■ Ruwff 2021-05-27 Full Routing Prepared by Timmons Gro Type 1124-hr 10-YR Rainfa&5.58" Hydrograph for Subcatchment 7S: To Bioretention 2 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 5.00 0.35 0.00 0.00 5.25 0.37 0.00 0.00 5.50 0.40 0.00 0.00 5.75 0.42 0.00 0.00 6.00 0.45 0.00 0.00 6.25 0.47 0.00 0.01 6.50 0.50 0.00 0.01 6.75 0.52 0.00 0.02 7.00 0.55 0.01 0.02 7.25 0.58 0.01 0.03 7.50 0.61 0.01 0.04 7.75 0.64 0.02 0.04 8.00 0.67 0.02 0.05 8.25 0.70 0.03 0.06 8.50 0.74 0.04 0.08 8.75 0.78 0.05 0.09 9.00 0.82 0.06 0.11 9.25 0.86 0.07 0.12 9.50 0.91 0.08 0.13 9.75 0.96 0.10 0.15 10.00 1.01 0.12 0.18 10.25 1.07 0.14 0.22 10.50 1.14 0.17 0.27 10.75 1.22 0.20 0.34 11.00 1.31 0.25 0.43 11.25 1.43 0.31 0.59 11.50 1.58 0.39 0.81 11.75 2.16 0.76 4.16 12.00 3.70 1.95 13.51 12.25 3.94 2.15 1.90 12.50 4.10 2.29 1.23 12.75 4.21 2.39 0.90 13.00 4.31 2.47 0.76 13.25 4.39 2.54 0.65 13.50 4.46 2.60 0.58 13.75 4.52 2.65 0.51 14.00 4.58 2.70 0.45 14.25 4.63 2.75 0.42 14.50 4.67 2.79 0.40 14.75 4.72 2.83 0.38 15.00 4.76 2.87 0.36 15.25 4.80 2.90 0.34 15.50 4.84 2.94 0.32 15.75 4.88 2.97 0.30 16.00 4.91 3.00 0.28 16.25 4.94 3.03 0.27 16.50 4.97 3.05 0.26 16.75 5.00 3.08 0.25 17.00 5.03 3.11 0.25 17.25 5.06 3.13 0.24 17.50 5.09 3.16 0.23 17.75 5.11 3.18 0.22 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 18.00 5.14 3.20 0.22 18.25 5.16 3.23 0.21 18.50 5.19 3.25 0.20 18.75 5.21 3.27 0.20 19.00 5.23 3.29 0.19 19.25 5.25 3.31 0.18 19.50 5.27 3.33 0.17 19.75 5.29 3.34 0.17 20.00 5.31 3.36 0.16 Printed 5/28/2021 2021-05-27 Full Routing Prepared by Timmons Gro Type 1124-hr 10-YR Rainfa&5.58" Printed 5/28/2021 Summary for Subcatchment 9S: To Dry Pond 3 Runoff = 43.50 cfs @ 11.97 hrs, Volume= 2.017 af, Depth> 3.45" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24-hr 10-YR Rainfall=5.58" Area (ac) CN Description 4.240 98 Paved parking, HSG B 2.770 61 >75% Grass cover, Good, HSG B 0.000 60 Woods, Fair, HSG B 7.010 83 Weighted Average 2.770 39.51 % Pervious Area 4.240 60.49% Impervious Area Tc Length Slope Velocity Capacity Description 48 46 44 42 40 38 36 34 32 30 'm 28 26 3 24 -2 22 20 18 16 14 12 10 8 6 4 2 0 5 Direct Entry, Subcatchment 9S: To Dry Pond 3 Hydrograph 6 7 8 9 10 11 12 13 Time (hours) -- ype 11 24-hr 10-YR Rainfall=5.58" Runoff Area=7.010 ac Runoff Volume=2.017 of Runoff Depth>3.45" Tc=6.0 min CN=83 17 18 19 20 S Rurwff 2021-05-27 Full Routing Prepared by Timmons Gro Type 1124-hr 10-YR Rainfa&5.58" Hydrograph for Subcatchment 9S: To Dry Pond 3 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 5.00 0.35 0.00 0.00 5.25 0.37 0.00 0.00 5.50 0.40 0.00 0.00 5.75 0.42 0.00 0.00 6.00 0.45 0.00 0.02 6.25 0.47 0.00 0.04 6.50 0.50 0.00 0.05 6.75 0.52 0.01 0.07 7.00 0.55 0.01 0.09 7.25 0.58 0.01 0.11 7.50 0.61 0.02 0.13 7.75 0.64 0.02 0.15 8.00 0.67 0.03 0.18 8.25 0.70 0.04 0.21 8.50 0.74 0.05 0.26 8.75 0.78 0.06 0.31 9.00 0.82 0.07 0.36 9.25 0.86 0.08 0.41 9.50 0.91 0.10 0.44 9.75 0.96 0.12 0.50 10.00 1.01 0.14 0.60 10.25 1.07 0.16 0.72 10.50 1.14 0.19 0.87 10.75 1.22 0.23 1.09 11.00 1.31 0.28 1.36 11.25 1.43 0.34 1.86 11.50 1.58 0.43 2.54 11.75 2.16 0.81 12.86 12.00 3.70 2.03 41.00 12.25 3.94 2.23 5.72 12.50 4.10 2.37 3.71 12.75 4.21 2.47 2.72 13.00 4.31 2.56 2.28 13.25 4.39 2.63 1.97 13.50 4.46 2.69 1.73 13.75 4.52 2.74 1.54 14.00 4.58 2.79 1.36 14.25 4.63 2.84 1.26 14.50 4.67 2.88 1.20 14.75 4.72 2.92 1.14 15.00 4.76 2.96 1.08 15.25 4.80 3.00 1.02 15.50 4.84 3.03 0.96 15.75 4.88 3.06 0.90 16.00 4.91 3.09 0.84 16.25 4.94 3.12 0.81 16.50 4.97 3.15 0.78 16.75 5.00 3.18 0.76 17.00 5.03 3.20 0.74 17.25 5.06 3.23 0.72 17.50 5.09 3.25 0.70 17.75 5.11 3.28 0.68 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 18.00 5.14 3.30 0.65 18.25 5.16 3.32 0.63 18.50 5.19 3.34 0.61 18.75 5.21 3.37 0.59 19.00 5.23 3.39 0.57 19.25 5.25 3.40 0.54 19.50 5.27 3.42 0.52 19.75 5.29 3.44 0.50 20.00 5.31 3.46 0.48 Printed 5/28/2021 2021-05-27 Full Routing Prepared by Timmons Gro Type 1124-hr 10-YR Rainfa&5.58" Printed 5/28/2021 Summary for Subcatchment 11S: Onsite Unrouted 4 Runoff = 2.43 cfs @ 11.98 hrs, Volume= 0.106 af, Depth> 2.02" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24-hr 10-YR Rainfall=5.58" Area (ac) CN Description 0.110 98 Paved parking, HSG B 0.380 61 >75% Grass cover, Good, HSG B 0.140 60 Woods, Fair, HSG B 0.630 67 Weighted Average 0.520 82.54% Pervious Area 0.110 17.46% Impervious Area Tc Length Slope Velocity Capacity Description lminl lfaafl /ft/ft1 (ft/car) lrfcl 6.0 Direct Entry, Subcatchment 11S: Onsite Unrouted 4 Hydrograph ❑ RunoH Type II 24-hr 10-YR Rainfall=5.58" Runoff Area=0.630 ac Runoff Volume=0.106 of toff Depth>2.02" Tc=6.0 min CN=67 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Time (hours) 2021-05-27 Full Routing Prepared by Timmons Gro Type 1124-hr 10-YR Rainfa&5.58" Hydrograph for Subcatchment 11S: Onsite Unrouted 4 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 5.00 0.35 0.00 0.00 5.25 0.37 0.00 0.00 5.50 0.40 0.00 0.00 5.75 0.42 0.00 0.00 6.00 0.45 0.00 0.00 6.25 0.47 0.00 0.00 6.50 0.50 0.00 0.00 6.75 0.52 0.00 0.00 7.00 0.55 0.00 0.00 7.25 0.58 0.00 0.00 7.50 0.61 0.00 0.00 7.75 0.64 0.00 0.00 8.00 0.67 0.00 0.00 8.25 0.70 0.00 0.00 8.50 0.74 0.00 0.00 8.75 0.78 0.00 0.00 9.00 0.82 0.00 0.00 9.25 0.86 0.00 0.00 9.50 0.91 0.00 0.00 9.75 0.96 0.00 0.00 10.00 1.01 0.00 0.00 10.25 1.07 0.00 0.00 10.50 1.14 0.00 0.01 10.75 1.22 0.01 0.02 11.00 1.31 0.02 0.03 11.25 1.43 0.04 0.04 11.50 1.58 0.06 0.07 11.75 2.16 0.23 0.50 12.00 3.70 0.96 2.34 12.25 3.94 1.11 0.36 12.50 4.10 1.21 0.24 12.75 4.21 1.28 0.18 13.00 4.31 1.34 0.15 13.25 4.39 1.39 0.13 13.50 4.46 1.44 0.11 13.75 4.52 1.48 0.10 14.00 4.58 1.51 0.09 14.25 4.63 1.55 0.09 14.50 4.67 1.58 0.08 14.75 4.72 1.61 0.08 15.00 4.76 1.64 0.07 15.25 4.80 1.67 0.07 15.50 4.84 1.69 0.07 15.75 4.88 1.72 0.06 16.00 4.91 1.74 0.06 16.25 4.94 1.76 0.06 16.50 4.97 1.78 0.05 16.75 5.00 1.80 0.05 17.00 5.03 1.83 0.05 17.25 5.06 1.84 0.05 17.50 5.09 1.86 0.05 17.75 5.11 1.88 0.05 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 18.00 5.14 1.90 0.05 18.25 5.16 1.92 0.04 18.50 5.19 1.93 0.04 18.75 5.21 1.95 0.04 19.00 5.23 1.97 0.04 19.25 5.25 1.98 0.04 19.50 5.27 2.00 0.04 19.75 5.29 2.01 0.04 20.00 5.31 2.02 0.03 Printed 5/28/2021 2021-05-27 Full Routing Prepared by Timmons Gro Type 1124-hr 10-YR Rainfa&5.58" Printed 5/28/2021 Summary for Subcatchment 12S: Onsite Unrouted 5 Runoff = 1.20 cfs @ 11.98 hrs, Volume= 0.053 af, Depth> 2.10" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24-hr 10-YR Rainfall=5.58" Area (ac) CN Description 0.060 98 Paved parking, HSG B 0.200 61 >75% Grass cover, Good, HSG B 0.040 60 Woods, Fair, HSG B 0.300 68 Weighted Average 0.240 80.00% Pervious Area 0.060 20.00% Impervious Area Tc Length Slope Velocity Capacity Description Direct Entry, Subcatchment 12S: Onsite Unrouted 5 Hydrograph ❑ RunoH Type II 24-hr 10-YR Rainfall=5.58" Runoff Area=0.300 ac Runoff Volume=0.053 of Runoff Depth>2.10" Tc=6.0 min 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Time (hours) 2021-05-27 Full Routing Prepared by Timmons Gro Type 1124-hr 10-YR Rainfa&5.58" Hydrograph for Subcatchment 12S: Onsite Unrouted 5 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 5.00 0.35 0.00 0.00 5.25 0.37 0.00 0.00 5.50 0.40 0.00 0.00 5.75 0.42 0.00 0.00 6.00 0.45 0.00 0.00 6.25 0.47 0.00 0.00 6.50 0.50 0.00 0.00 6.75 0.52 0.00 0.00 7.00 0.55 0.00 0.00 7.25 0.58 0.00 0.00 7.50 0.61 0.00 0.00 7.75 0.64 0.00 0.00 8.00 0.67 0.00 0.00 8.25 0.70 0.00 0.00 8.50 0.74 0.00 0.00 8.75 0.78 0.00 0.00 9.00 0.82 0.00 0.00 9.25 0.86 0.00 0.00 9.50 0.91 0.00 0.00 9.75 0.96 0.00 0.00 10.00 1.01 0.00 0.00 10.25 1.07 0.00 0.00 10.50 1.14 0.01 0.01 10.75 1.22 0.02 0.01 11.00 1.31 0.03 0.01 11.25 1.43 0.05 0.02 11.50 1.58 0.08 0.04 11.75 2.16 0.25 0.25 12.00 3.70 1.02 1.16 12.25 3.94 1.17 0.18 12.50 4.10 1.27 0.12 12.75 4.21 1.34 0.09 13.00 4.31 1.40 0.07 13.25 4.39 1.46 0.06 13.50 4.46 1.50 0.06 13.75 4.52 1.55 0.05 14.00 4.58 1.58 0.04 14.25 4.63 1.62 0.04 14.50 4.67 1.65 0.04 14.75 4.72 1.68 0.04 15.00 4.76 1.71 0.04 15.25 4.80 1.74 0.03 15.50 4.84 1.77 0.03 15.75 4.88 1.79 0.03 16.00 4.91 1.82 0.03 16.25 4.94 1.84 0.03 16.50 4.97 1.86 0.03 16.75 5.00 1.88 0.03 17.00 5.03 1.90 0.02 17.25 5.06 1.92 0.02 17.50 5.09 1.94 0.02 17.75 5.11 1.96 0.02 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 18.00 5.14 1.98 0.02 18.25 5.16 2.00 0.02 18.50 5.19 2.01 0.02 18.75 5.21 2.03 0.02 19.00 5.23 2.05 0.02 19.25 5.25 2.06 0.02 19.50 5.27 2.08 0.02 19.75 5.29 2.09 0.02 20.00 5.31 2.10 0.02 Printed 5/28/2021 2021-05-27 Full Routing Prepared by Timmons Gro Type // 24-hr 10-YR Rainfall=5.58" Summary for Pond 6P: BIORETENTION 1 [88] Warning: Qout>Qin may require smaller dt or Finer Routing Printed 5/28/2021 Inflow Area = 8.360 ac, 54.55% Impervious, Inflow Depth > 3.07" for 10-YR event Inflow = 48.60 cfs @ 11.97 hrs, Volume= 2.141 of Outflow = 48.74 cfs @ 11.98 hrs, Volume= 1.793 af, Atten= 0%, Lag= 0.5 min Primary = 48.74 cfs @ 11.98 hrs, Volume= 1.793 of Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Peak Elev= 415.82' @ 11.98 hrs Surf.Area= 6,336 sf Storage= 19,664 cf Plug -Flow detention time= 72.4 min calculated for 1.787 of (83% of inflow) Center -of -Mass det. time= 24.9 min ( 804.6 - 779.7 ) Volume Invert Avail.Storage Storage Description #1 406.00' 32,374 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Voids Inc.Store Cum.Store (feet) (sq-ft) M (cubic -feet) (cubic -feet) 406.00 3,808 0.0 0 0 411.00 3,808 40.0 7,616 7,616 414.00 3,808 25.0 2,856 10,472 415.00 5,174 100.0 4,491 14,963 416.00 6,596 100.0 5,885 20,848 417.50 8,772 100.0 11,526 32,374 Device Routing Invert Outlet Devices #1 Primary 409.71' 36.0" Round HDPE_Round 36" L= 47.6' RCP, sq.cut end projecting, Ke= 0.500 Inlet / Outlet Invert= 409.71' / 409.00' S= 0.0149 '/' Cc= 0.900 n= 0.010 PVC, smooth interior, Flow Area= 7.07 sf #2 Device 1 415.00' 60.0" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #3 Primary 415.70' 95.0' long x 1.0' breadth Broad -Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 Coef. (English) 2.69 2.72 2.75 2.85 2.98 3.08 3.20 3.28 3.31 3.30 3.31 3.32 Primary OutFlow Max=46.30 cfs @ 11.98 hrs HW=415.81' (Free Discharge) 11=HDPE Round 36" (Passes 37.28 cfs of 72.98 cfs potential flow) t2=Orifice/Grate (Weir Controls 37.28 cfs @ 2.94 fps) 3=Broad-Crested Rectangular Weir (Weir Controls 9.02 cfs @ 0.88 fps) 2021-05-27 Full Routing Prepared by Timmons Grc Type 1124-hr 10-YR Rainfall=5.58" Pond 6P: BIORETENTION 1 Hydrograph Time (hours) Pond 6P: BIORETENTION 1 Stage -Discharge Discharge (cfs) Printed 5/28/2021 ■ Inflow ■ Primary ❑ Primary 2021-05-27 Full Routing Prepared by Timmons Grc Type 1124-hr 10-YR Rainfall=5.58" Pond 6P: BIORETENTION 1 Stage -Area -Storage Storage (cubic -feet) Printed 5/28/2021 ■ Surface ■ Storage 2021-05-27 Full Routing Prepared by Timmons Gro Type 1124-hr 10-YR Rainfa&5.58" Hydrograph for Pond 6P: BIORETENTION 1 Time Inflow Storage Elevation Primary (hours) (cfs) (cubic -feet) (feet) (cfs) 5.00 0.00 0 406.00 0.00 5.50 0.00 0 406.00 0.00 6.00 0.01 6 406.00 0.00 6.50 0.03 47 406.03 0.00 7.00 0.06 131 406.09 0.00 7.50 0.08 260 406.17 0.00 8.00 0.11 438 406.29 0.00 8.50 0.16 682 406.45 0.00 9.00 0.24 1,042 406.68 0.00 9.50 0.30 1,535 407.01 0.00 10.00 0.42 2,170 407.42 0.00 10.50 0.63 3,107 408.04 0.00 11.00 1.01 4,557 408.99 0.00 11.50 1.93 7,101 410.66 0.00 12.00 47.06 19,630 415.81 47.84 12.50 4.36 16,042 415.20 4.70 13.00 2.66 15,685 415.14 2.76 13.50 2.02 15,557 415.11 2.07 14.00 1.59 15,475 415.10 1.63 14.50 1.40 15,434 415.09 1.41 15.00 1.26 15,408 415.09 1.28 15.50 1.12 15,364 415.08 1.15 16.00 0.98 15,315 415.07 1.01 16.50 0.91 15,285 415.06 0.92 17.00 0.86 15,267 415.06 0.87 17.50 0.81 15,250 415.05 0.82 18.00 0.76 15,232 415.05 0.77 18.50 0.71 15,214 415.05 0.72 19.00 0.66 15,197 415.04 0.67 19.50 0.61 15,179 415.04 0.62 20.00 0.56 15,161 415.04 0.57 Printed 5/28/2021 2021-05-27 Full Routing Prepared by Timmons Gro Elevation Primary (feet) (cfs) 406.00 0.00 406.06 0.00 406.12 0.00 406.18 0.00 406.24 0.00 406.30 0.00 406.36 0.00 406.42 0.00 406.48 0.00 406.54 0.00 406.60 0.00 406.66 0.00 406.72 0.00 406.78 0.00 406.84 0.00 406.90 0.00 406.96 0.00 407.02 0.00 407.08 0.00 407.14 0.00 407.20 0.00 407.26 0.00 407.32 0.00 407.38 0.00 407.44 0.00 407.50 0.00 407.56 0.00 407.62 0.00 407.68 0.00 407.74 0.00 407.80 0.00 407.86 0.00 407.92 0.00 407.98 0.00 408.04 0.00 408.10 0.00 408.16 0.00 408.22 0.00 408.28 0.00 408.34 0.00 408.40 0.00 408.46 0.00 408.52 0.00 408.58 0.00 408.64 0.00 408.70 0.00 408.76 0.00 408.82 0.00 408.88 0.00 408.94 0.00 409.00 0.00 409.06 0.00 Type 1124-hr 10-YR Rainfa&5.58" Stage -Discharge for Pond 6P: BIORETENTION 1 Elevation Primary (feet) (cfs) 409.12 0.00 409.18 0.00 409.24 0.00 409.30 0.00 409.36 0.00 409.42 0.00 409.48 0.00 409.54 0.00 409.60 0.00 409.66 0.00 409.72 0.00 409.78 0.00 409.84 0.00 409.90 0.00 409.96 0.00 410.02 0.00 410.08 0.00 410.14 0.00 410.20 0.00 410.26 0.00 410.32 0.00 410.38 0.00 410.44 0.00 410.50 0.00 410.56 0.00 410.62 0.00 410.68 0.00 410.74 0.00 410.80 0.00 410.86 0.00 410.92 0.00 410.98 0.00 411.04 0.00 411.10 0.00 411.16 0.00 411.22 0.00 411.28 0.00 411.34 0.00 411.40 0.00 411.46 0.00 411.52 0.00 411.58 0.00 411.64 0.00 411.70 0.00 411.76 0.00 411.82 0.00 411.88 0.00 411.94 0.00 412.00 0.00 412.06 0.00 412.12 0.00 412.18 0.00 Elevation Primary (feet) (cfs) 412.24 0.00 412.30 0.00 412.36 0.00 412.42 0.00 412.48 0.00 412.54 0.00 412.60 0.00 412.66 0.00 412.72 0.00 412.78 0.00 412.84 0.00 412.90 0.00 412.96 0.00 413.02 0.00 413.08 0.00 413.14 0.00 413.20 0.00 413.26 0.00 413.32 0.00 413.38 0.00 413.44 0.00 413.50 0.00 413.56 0.00 413.62 0.00 413.68 0.00 413.74 0.00 413.80 0.00 413.86 0.00 413.92 0.00 413.98 0.00 414.04 0.00 414.10 0.00 414.16 0.00 414.22 0.00 414.28 0.00 414.34 0.00 414.40 0.00 414.46 0.00 414.52 0.00 414.58 0.00 414.64 0.00 414.70 0.00 414.76 0.00 414.82 0.00 414.88 0.00 414.94 0.00 415.00 0.00 415.06 0.75 415.12 2.14 415.18 3.92 415.24 6.04 415.30 8.44 Printed 5/28/2021 Elevation Primary (feet) (cfs) 415.36 11.09 415.42 13.98 415.48 17.08 415.54 20.38 415.60 23.87 415.66 27.54 415.72 32.10 415.78 41.17 415.84 52.93 415.90 66.71 415.96 82.31 416.02 99.48 416.08 118.11 416.14 138.10 416.20 159.38 416.26 181.89 416.32 204.94 416.38 226.01 416.44 248.37 416.50 272.01 416.56 297.61 416.62 324.62 416.68 353.05 416.74 382.31 416.80 412.56 416.86 444.09 416.92 477.15 416.98 512.09 417.04 548.43 417.10 586.18 417.16 623.34 417.22 661.67 417.28 701.19 417.34 739.89 417.40 778.51 417.46 817.97 2021-05-27 Full Routing Prepared by Timmons Gro Type 1124-hr 10-YR Rainfa&5.58" Stage -Area -Storage for Pond 6P: BIORETENTION 1 Elevation Surface Storage (feet) (sq-ft) (cubic -feet) 406.00 3,808 0 406.15 3,808 228 406.30 3,808 457 406.45 3,808 685 406.60 3,808 914 406.75 3,808 1,142 406.90 3,808 1,371 407.05 3,808 1,599 407.20 3,808 1,828 407.35 3,808 2,056 407.50 3,808 2,285 407.65 3,808 2,513 407.80 3,808 2,742 407.95 3,808 2,970 408.10 3,808 3,199 408.25 3,808 3,427 408.40 3,808 3,656 408.55 3,808 3,884 408.70 3,808 4,113 408.85 3,808 4,341 409.00 3,808 4,570 409.15 3,808 4,798 409.30 3,808 5,027 409.45 3,808 5,255 409.60 3,808 5,484 409.75 3,808 5,712 409.90 3,808 5,940 410.05 3,808 6,169 410.20 3,808 6,397 410.35 3,808 6,626 410.50 3,808 6,854 410.65 3,808 7,083 410.80 3,808 7,311 410.95 3,808 7,540 411.10 3,808 7,711 411.25 3,808 7,854 411.40 3,808 7,997 411.55 3,808 8,140 411.70 3,808 8,282 411.85 3,808 8,425 412.00 3,808 8,568 412.15 3,808 8,711 412.30 3,808 8,854 412.45 3,808 8,996 412.60 3,808 9,139 412.75 3,808 9,282 412.90 3,808 9,425 413.05 3,808 9,568 413.20 3,808 9,710 413.35 3,808 9,853 413.50 3,808 9,996 413.65 3,808 10,139 Elevation Surface Storage (feet) (sq-ft) (cubic -feet) 413.80 3,808 10,282 413.95 3,808 10,424 414.10 3,945 10,860 414.25 4,150 11,467 414.40 4,354 12,104 414.55 4,559 12,773 414.70 4,764 13,472 414.85 4,969 14,202 415.00 5,174 14,963 415.15 5,387 15,755 415.30 5,601 16,579 415.45 5,814 17,435 415.60 6,027 18,323 415.75 6,241 19,243 415.90 6,454 20,196 416.05 6,669 21,180 416.20 6,886 22,196 416.35 7,104 23,245 416.50 7,321 24,327 416.65 7,539 25,442 416.80 7,757 26,589 416.95 7,974 27,769 417.10 8,192 28,981 417.25 8,409 30,226 417.40 8,627 31,504 Printed 5/28/2021 2021-05-27 Full Routing Prepared by Timmons Gro Type/1 24-hr 10-YR Rainfall=5.58" Summary for Pond 8P: BIORETENTION 2 Printed 5/28/2021 Inflow Area = 2.360 ac, 58.05% Impervious, Inflow Depth > 3.36" for 10-YR event Inflow = 14.31 cfs @ 11.97 hrs, Volume= 0.660 of Outflow = 14.11 cfs @ 11.99 hrs, Volume= 0.532 af, Atten= 1%, Lag= 1.1 min Primary = 14.11 cfs @ 11.99 hrs, Volume= 0.532 of Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Peak Elev= 432.50' @ 11.99 hrs Surf.Area= 2,197 sf Storage= 6,776 cf Plug -Flow detention time= 82.2 min calculated for 0.530 of (80% of inflow) Center -of -Mass det. time= 29.6 min ( 800.7 - 771.0 ) Volume Invert Avail.Storage Storage Description #1 423.91' 10,323 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Voids Inc.Store Cum.Store (feet) (sq-ft) M (cubic -feet) (cubic -feet) 423.91 1,587 0.0 0 0 427.91 1,587 40.0 2,539 2,539 430.91 1,587 25.0 1,190 3,729 431.00 1,627 100.0 145 3,874 432.00 2,041 100.0 1,834 5,708 433.00 2,350 100.0 2,196 7,904 434.00 2,489 100.0 2,420 10,323 Device Routino Invert Outlet Devices #1 Primary 424.43' 18.0" Round HDPE_Round 18" L= 61.4' RCP, sq.cut end projecting, Ke= 0.500 Inlet / Outlet Invert= 424.43' / 423.82' S= 0.0099 '/' Cc= 0.900 n= 0.010 PVC, smooth interior, Flow Area= 1.77 sf #2 Device 1 431.91' 36.0" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads Primary OutFlow Max=13.65 cfs @ 11.99 hrs HW=432.49' (Free Discharge) L1=HDPE_Round 18" (Passes 13.65 cfs of 23.01 cfs potential flow) t2=Orifice/Grate (Weir Controls 13.65 cfs @ 2.49 fps) 2021-05-27 Full Routing Prepared by Timmons Gro W Type 1124-hr 10-YR Rainfa&5.58" Printed 5/28/2021 Pond 8P: BIORETENTION 2 Hydrograph 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Time )hours) Pond 8P: BIORETENTION 2 Stage -Discharge Discharge (cfs) ■ Inflow ■ Primary ❑ Primary 2021-05-27 Full Routing Prepared by Timmons Gro 434 _ 433- 432 431_ 430- p 429- m d 428- W 427- 426 425- 424- Type 1124-hr 10-YR Rainta&5.58" Printed 5/28/2021 Pond 8P: BIORETENTION 2 Stage -Area -Storage Surface/Horizontal/Wetted Area (sq-ft) n Inn Ann nnn nn A nnn A 9nn 4 Ann 4 ¢nn 4 Cnn 7 nnn I Onn O nnn 1NINON■�■■ polo ,10111 Mom IMEN IMMIMM11 I■■■1■I■IN ■�■�■■�� I■■■1■I■IN ' ■,■I■■11 I■■■1■I■I, ■,■I■■11 I■■■1■I■I, 0 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10,000 Storage (cubic -feet) ❑ Surface ❑ Storage 2021-05-27 Full Routing Prepared by Timmons Gro Type 1124-hr 10-YR Rainfa&5.58" Hydrograph for Pond 8P: BIORETENTION 2 Time Inflow Storage Elevation Primary (hours) (cfs) (cubic -feet) (feet) (cfs) 5.00 0.00 0 423.91 0.00 5.50 0.00 0 423.91 0.00 6.00 0.00 0 423.91 0.00 6.50 0.01 9 423.92 0.00 7.00 0.02 40 423.97 0.00 7.50 0.04 93 424.06 0.00 8.00 0.05 171 424.18 0.00 8.50 0.08 281 424.35 0.00 9.00 0.11 446 424.61 0.00 9.50 0.13 667 424.96 0.00 10.00 0.18 947 425.40 0.00 10.50 0.27 1,354 426.04 0.00 11.00 0.43 1,977 427.02 0.00 11.50 0.81 3,057 429.21 0.00 12.00 13.51 6,765 432.50 13.95 12.50 1.23 5,768 432.03 1.32 13.00 0.76 5,700 432.00 0.78 13.50 0.58 5,670 431.98 0.59 14.00 0.45 5,641 431.97 0.47 14.50 0.40 5,625 431.96 0.41 15.00 0.36 5,615 431.95 0.37 15.50 0.32 5,606 431.95 0.33 16.00 0.28 5,596 431.94 0.29 16.50 0.26 5,590 431.94 0.26 17.00 0.25 5,587 431.94 0.25 17.50 0.23 5,583 431.94 0.23 18.00 0.22 5,580 431.94 0.22 18.50 0.20 5,576 431.93 0.20 19.00 0.19 5,573 431.93 0.19 19.50 0.17 5,569 431.93 0.18 20.00 0.16 5,565 431.93 0.16 Printed 5/28/2021 2021-05-27 Full Routing Prepared by Timmons Gro Elevation Primary (feet) (cfs) 423.91 0.00 423.97 0.00 424.03 0.00 424.09 0.00 424.15 0.00 424.21 0.00 424.27 0.00 424.33 0.00 424.39 0.00 424.45 0.00 424.51 0.00 424.57 0.00 424.63 0.00 424.69 0.00 424.75 0.00 424.81 0.00 424.87 0.00 424.93 0.00 424.99 0.00 425.05 0.00 425.11 0.00 425.17 0.00 425.23 0.00 425.29 0.00 425.35 0.00 425.41 0.00 425.47 0.00 425.53 0.00 425.59 0.00 425.65 0.00 425.71 0.00 425.77 0.00 425.83 0.00 425.89 0.00 425.95 0.00 426.01 0.00 426.07 0.00 426.13 0.00 426.19 0.00 426.25 0.00 426.31 0.00 426.37 0.00 426.43 0.00 426.49 0.00 426.55 0.00 426.61 0.00 426.67 0.00 426.73 0.00 426.79 0.00 426.85 0.00 426.91 0.00 426.97 0.00 Type 1124-hr 10-YR Rainfall=5.58" Stage -Discharge for Pond 8P: BIORETENTION 2 Elevation Primary (feet) (cfs) 427.03 0.00 427.09 0.00 427.15 0.00 427.21 0.00 427.27 0.00 427.33 0.00 427.39 0.00 427.45 0.00 427.51 0.00 427.57 0.00 427.63 0.00 427.69 0.00 427.75 0.00 427.81 0.00 427.87 0.00 427.93 0.00 427.99 0.00 428.05 0.00 428.11 0.00 428.17 0.00 428.23 0.00 428.29 0.00 428.35 0.00 428.41 0.00 428.47 0.00 428.53 0.00 428.59 0.00 428.65 0.00 428.71 0.00 428.77 0.00 428.83 0.00 428.89 0.00 428.95 0.00 429.01 0.00 429.07 0.00 429.13 0.00 429.19 0.00 429.25 0.00 429.31 0.00 429.37 0.00 429.43 0.00 429.49 0.00 429.55 0.00 429.61 0.00 429.67 0.00 429.73 0.00 429.79 0.00 429.85 0.00 429.91 0.00 429.97 0.00 430.03 0.00 430.09 0.00 Elevation Primary (feet) (cfs) 430.15 0.00 430.21 0.00 430.27 0.00 430.33 0.00 430.39 0.00 430.45 0.00 430.51 0.00 430.57 0.00 430.63 0.00 430.69 0.00 430.75 0.00 430.81 0.00 430.87 0.00 430.93 0.00 430.99 0.00 431.05 0.00 431.11 0.00 431.17 0.00 431.23 0.00 431.29 0.00 431.35 0.00 431.41 0.00 431.47 0.00 431.53 0.00 431.59 0.00 431.65 0.00 431.71 0.00 431.77 0.00 431.83 0.00 431.89 0.00 431.95 0.25 432.01 0.97 432.07 1.97 432.13 3.18 432.19 4.57 432.25 6.11 432.31 7.80 432.37 9.62 432.43 11.56 432.49 13.61 432.55 15.78 432.61 18.05 432.67 20.42 432.73 22.88 432.79 23.47 432.85 23.56 432.91 23.66 432.97 23.75 433.03 23.84 433.09 23.93 433.15 24.02 433.21 24.11 Printed 5/28/2021 Elevation Primary (feet) (cfs) 433.27 24.20 433.33 24.29 433.39 24.38 433.45 24.47 433.51 24.56 433.57 24.65 433.63 24.73 433.69 24.82 433.75 24.91 433.81 25.00 433.87 25.08 433.93 25.17 433.99 25.26 2021-05-27 Full Routing Prepared by Timmons Gro Type 1124-hr 10-YR Rainfa&5.58" Stage -Area -Storage for Pond 8P: BIORETENTION 2 Elevation Surface Storage (feet) (sq-ft) (cubic -feet) 423.91 1,587 0 424.06 1,587 95 424.21 1,587 190 424.36 1,587 286 424.51 1,587 381 424.66 1,587 476 424.81 1,587 571 424.96 1,587 667 425.11 1,587 762 425.26 1,587 857 425.41 1,587 952 425.56 1,587 1,047 425.71 1,587 1,143 425.86 1,587 1,238 426.01 1,587 1,333 426.16 1,587 1,428 426.31 1,587 1,524 426.46 1,587 1,619 426.61 1,587 1,714 426.76 1,587 1,809 426.91 1,587 1,904 427.06 1,587 2,000 427.21 1,587 2,095 427.36 1,587 2,190 427.51 1,587 2,285 427.66 1,587 2,381 427.81 1,587 2,476 427.96 1,587 2,559 428.11 1,587 2,619 428.26 1,587 2,678 428.41 1,587 2,738 428.56 1,587 2,797 428.71 1,587 2,857 428.86 1,587 2,916 429.01 1,587 2,976 429.16 1,587 3,035 429.31 1,587 3,095 429.46 1,587 3,154 429.61 1,587 3,214 429.76 1,587 3,273 429.91 1,587 3,333 430.06 1,587 3,392 430.21 1,587 3,452 430.36 1,587 3,511 430.51 1,587 3,571 430.66 1,587 3,630 430.81 1,587 3,690 430.96 1,609 3,809 431.11 1,673 4,056 431.26 1,735 4,311 431.41 1,797 4,576 431.56 1,859 4,850 Elevation Surface Storage (feet) (sq-ft) (cubic -feet) 431.71 1,921 5,134 431.86 1,983 5,426 432.01 2,044 5,729 432.16 2,090 6,039 432.31 2,137 6,356 432.46 2,183 6,680 432.61 2,229 7,011 432.76 2,276 7,348 432.91 2,322 7,693 433.06 2,358 8,045 433.21 2,379 8,400 433.36 2,400 8,759 433.51 2,421 9,120 433.66 2,442 9,485 433.81 2,463 9,853 433.96 2,483 10,224 Printed 5/28/2021 2021-05-27 Full Routing Prepared by Timmons Gro Type/1 24-hr 10-YR Rainfall=5.58" Summary for Pond 10P: DRY POND Printed 5/28/2021 Inflow Area = 7.010 ac, 60.49% Impervious, Inflow Depth > 3.45" for 10-YR event Inflow = 43.50 cfs @ 11.97 hrs, Volume= 2.017 of Outflow = 37.11 cfs @ 12.02 hrs, Volume= 1.829 af, Atten= 15%, Lag= 3.1 min Primary = 37.11 cfs @ 12.02 hrs, Volume= 1.829 of Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Peak Elev= 424.87' @ 12.01 hrs Surf.Area= 5,890 sf Storage= 23,332 cf Plug -Flow detention time= 86.9 min calculated for 1.829 of (91% of inflow) Center -of -Mass det. time= 54.5 min ( 823.3 - 768.8 ) Volume Invert Avail.Storage Storage Description #1 418.00' 33,448 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic -feet) (cubic -feet) 418.00 1,082 0 0 419.00 1,611 1,347 1,347 420.00 2,218 1,915 3,261 421.00 2,905 2,562 5,823 422.00 3,711 3,308 9,131 423.00 4,590 4,151 13,281 424.00 5,526 5,058 18,339 424.10 5,622 557 18,896 425.00 5,935 5,201 24,097 426.00 6,368 6,152 30,249 426.50 6,431 3,200 33,448 Device Routing Invert Outlet Devices #1 Primary 417.90' 24.0" Round Culvert L= 117.9' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 417.90' / 417.01' S= 0.0075 '/' Cc= 0.900 n= 0.010 PVC, smooth interior, Flow Area= 3.14 sf #2 Device 1 418.00' 4.0" W x 4.2" H Vert. Orifice/Grate C= 0.600 #3 Device 1 423.92' 60.0" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #4 Primary 424.99' 45.0' long x 5.0' breadth Broad -Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 Primary OutFlow Max=36.84 cfs @ 12.02 hrs HW=424.83' (Free Discharge) 1=Culvert (Inlet Controls 36.84 cfs @ 11.73 fps) �2=Orifice/Grate (Passes < 1.45 cfs potential flow) 3=Orifice/Grate (Passes < 44.60 cfs potential flow) =Broad -Crested Rectangular Weir ( Controls 0.00 cfs) 2021-05-27 Full Routing Prepared by Timmons Grc Pond 10P: DRY POND Hydrograph Type 1124-hr 10-YR Rainfall=5.58" Printed 5/28/2021 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Time (hours) Pond 10P: DRY POND Stage -Discharge Discharge (ds) ■ Inflow ■ Primary ❑ Primary 2021-05-27 Full Routing Prepared by Timmons Grc Pond 10P: DRY POND Stage -Area -Storage Surface/Horizontal/Wetted Area (sq-ft) Type 1124-hr 10-YR Rainfall=5.58" Printed 5/28/2021 ■ Surface ■ Storage 2021-05-27 Full Routing Prepared by Timmons Gro Type 1124-hr 10-YR Rainfa&5.58" Hydrograph for Pond 10P: DRY POND Time Inflow Storage Elevation Primary (hours) (cfs) (cubic -feet) (feet) (cfs) 5.00 0.00 0 418.00 0.00 5.50 0.00 0 418.00 0.00 6.00 0.02 9 418.01 0.00 6.50 0.05 58 418.05 0.02 7.00 0.09 136 418.12 0.05 7.50 0.13 216 418.19 0.09 8.00 0.18 290 418.25 0.14 8.50 0.26 376 418.32 0.20 9.00 0.36 509 418.43 0.27 9.50 0.44 680 418.55 0.34 10.00 0.60 916 418.72 0.41 10.50 0.87 1,392 419.03 0.52 11.00 1.36 2,319 419.55 0.66 11.50 2.54 4,365 420.46 0.85 12.00 41.00 23,316 424.87 36.95 12.50 3.71 18,675 424.06 4.11 13.00 2.28 18,308 423.99 2.42 13.50 1.73 18,124 423.96 1.82 14.00 1.36 17,975 423.93 1.47 14.50 1.20 17,790 423.90 1.34 15.00 1.08 17,437 423.83 1.34 15.50 0.96 16,886 423.73 1.32 16.00 0.84 16,141 423.59 1.31 16.50 0.78 15,260 423.41 1.29 17.00 0.74 14,338 423.22 1.26 17.50 0.70 13,382 423.02 1.24 18.00 0.65 12,396 422.80 1.21 18.50 0.61 11,385 422.57 1.18 19.00 0.57 10,353 422.32 1.14 19.50 0.52 9,306 422.05 1.11 20.00 0.48 8,252 421.76 1.06 Printed 5/28/2021 2021-05-27 Full Routing Prepared by Timmons Gro Elevation Primary (feet) (cfs) 418.00 0.00 418.10 0.03 418.20 0.10 418.30 0.18 418.40 0.26 418.50 0.32 418.60 0.36 418.70 0.41 418.80 0.44 418.90 0.48 419.00 0.51 419.10 0.54 419.20 0.57 419.30 0.60 419.40 0.62 419.50 0.65 419.60 0.67 419.70 0.69 419.80 0.72 419.90 0.74 420.00 0.76 420.10 0.78 420.20 0.80 420.30 0.82 420.40 0.84 420.50 0.86 420.60 0.87 420.70 0.89 420.80 0.91 420.90 0.93 421.00 0.94 421.10 0.96 421.20 0.98 421.30 0.99 421.40 1.01 421.50 1.02 421.60 1.04 421.70 1.05 421.80 1.07 421.90 1.08 422.00 1.10 422.10 1.11 422.20 1.13 422.30 1.14 422.40 1.15 422.50 1.17 422.60 1.18 422.70 1.19 422.80 1.21 422.90 1.22 423.00 1.23 423.10 1.25 Type 1124-hr 10-YR Rainfa&5.58" Stage -Discharge for Pond 10P: DRY POND Elevation Primary (feet) (cfs) 423.20 1.26 423.30 1.27 423.40 1.28 423.50 1.30 423.60 1.31 423.70 1.32 423.80 1.33 423.90 1.34 424.00 2.52 424.10 5.29 424.20 8.99 424.30 13.42 424.40 18.48 424.50 24.10 424.60 30.23 424.70 36.43 424.80 36.74 424.90 37.05 425.00 37.47 425.10 41.51 425.20 48.14 425.30 57.13 425.40 68.22 425.50 81.64 425.60 97.02 425.70 111.84 425.80 127.65 425.90 144.71 426.00 162.67 426.10 181.05 426.20 200.16 426.30 220.25 426.40 241.08 426.50 262.97 Printed 5/28/2021 2021-05-27 Full Routing Prepared by Timmons Gro Type 1124-hr 10-YR Rainfa&5.58" Stage -Area -Storage for Pond 10P: DRY POND Elevation Surface Storage (feet) (sq-ft) (cubic -feet) 418.00 1,082 0 418.10 1,135 111 418.20 1,188 227 418.30 1,241 348 418.40 1,294 475 418.50 1,347 607 418.60 1,399 744 418.70 1,452 887 418.80 1,505 1,035 418.90 1,558 1,188 419.00 1,611 1,347 419.10 1,672 1,511 419.20 1,732 1,681 419.30 1,793 1,857 419.40 1,854 2,039 419.50 1,915 2,228 419.60 1,975 2,422 419.70 2,036 2,623 419.80 2,097 2,830 419.90 2,157 3,042 420.00 2,218 3,261 420.10 2,287 3,486 420.20 2,355 3,718 420.30 2,424 3,957 420.40 2,493 4,203 420.50 2,562 4,456 420.60 2,630 4,715 420.70 2,699 4,982 420.80 2,768 5,255 420.90 2,836 5,535 421.00 2,905 5,823 421.10 2,986 6,117 421.20 3,066 6,420 421.30 3,147 6,730 421.40 3,227 7,049 421.50 3,308 7,376 421.60 3,389 7,711 421.70 3,469 8,053 421.80 3,550 8,404 421.90 3,630 8,763 422.00 3,711 9,131 422.10 3,799 9,506 422.20 3,887 9,890 422.30 3,975 10,283 422.40 4,063 10,685 422.50 4,151 11,096 422.60 4,238 11,515 422.70 4,326 11,944 422.80 4,414 12,381 422.90 4,502 12,826 423.00 4,590 13,281 423.10 4,684 13,745 Elevation Surface Storage (feet) (sq-ft) (cubic -feet) 423.20 4,777 14,218 423.30 4,871 14,700 423.40 4,964 15,192 423.50 5,058 15,693 423.60 5,152 16,203 423.70 5,245 16,723 423.80 5,339 17,253 423.90 5,432 17,791 424.00 5,526 18,339 424.10 5,622 18,896 424.20 5,657 19,460 424.30 5,692 20,028 424.40 5,726 20,599 424.50 5,761 21,173 424.60 5,796 21,751 424.70 5,831 22,332 424.80 5,865 22,917 424.90 5,900 23,505 425.00 5,935 24,097 425.10 5,978 24,693 425.20 6,022 25,293 425.30 6,065 25,897 425.40 6,108 26,506 425.50 6,152 27,119 425.60 6,195 27,736 425.70 6,238 28,358 425.80 6,281 28,984 425.90 6,325 29,614 426.00 6,368 30,249 426.10 6,381 30,886 426.20 6,393 31,525 426.30 6,406 32,165 426.40 6,418 32,806 426.50 6,431 33,448 Printed 5/28/2021 2021-05-27 Full Routing Prepared by Timmons Gro Type 1124-hr 10-YR Rainfa&5.58" Printed 5/28/2021 Summary for Link 13L: POST Combined Inflow Area = 16.300 ac, 55.03% Impervious, Inflow Depth > 2.78" for 10-YR event Inflow = 88.93 cfs @ 11.99 hrs, Volume= 3.781 of Primary = 88.93 cfs @ 11.99 hrs, Volume= 3.781 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Link 13L: POST Combined Hydrograph ■ Inflow ❑ Primary Time (hours) 2021-05-27 Full Routing Prepared by Timmons Gro Type 1124-hr 10-YR Rainfa&5.58" Hydrograph for Link 13L: POST Combined Time Inflow Elevation Primary (hours) (cfs) (feet) (cfs) 5.00 0.00 0.00 0.00 5.25 0.00 0.00 0.00 5.50 0.00 0.00 0.00 5.75 0.00 0.00 0.00 6.00 0.00 0.00 0.00 6.25 0.01 0.00 0.01 6.50 0.02 0.00 0.02 6.75 0.03 0.00 0.03 7.00 0.05 0.00 0.05 7.25 0.07 0.00 0.07 7.50 0.09 0.00 0.09 7.75 0.11 0.00 0.11 8.00 0.14 0.00 0.14 8.25 0.16 0.00 0.16 8.50 0.20 0.00 0.20 8.75 0.23 0.00 0.23 9.00 0.27 0.00 0.27 9.25 0.31 0.00 0.31 9.50 0.34 0.00 0.34 9.75 0.37 0.00 0.37 10.00 0.41 0.00 0.41 10.25 0.47 0.00 0.47 10.50 0.53 0.00 0.53 10.75 0.61 0.00 0.61 11.00 0.70 0.00 0.70 11.25 0.81 0.00 0.81 11.50 0.96 0.00 0.96 11.75 1.85 0.00 1.85 12.00 88.29 0.00 88.29 12.25 14.92 0.00 14.92 12.50 9.17 0.00 9.17 12.75 6.43 0.00 6.43 13.00 5.40 0.00 5.40 13.25 4.61 0.00 4.61 13.50 4.06 0.00 4.06 13.75 3.59 0.00 3.59 14.00 3.24 0.00 3.24 14.25 2.96 0.00 2.96 14.50 2.88 0.00 2.88 14.75 2.80 0.00 2.80 15.00 2.72 0.00 2.72 15.25 2.65 0.00 2.65 15.50 2.57 0.00 2.57 15.75 2.49 0.00 2.49 16.00 2.40 0.00 2.40 16.25 2.33 0.00 2.33 16.50 2.29 0.00 2.29 16.75 2.25 0.00 2.25 17.00 2.21 0.00 2.21 17.25 2.17 0.00 2.17 17.50 2.13 0.00 2.13 17.75 2.09 0.00 2.09 Time Inflow Elevation Primary (hours) (cfs) (feet) (cfs) 18.00 2.05 0.00 2.05 18.25 2.00 0.00 2.00 18.50 1.96 0.00 1.96 18.75 1.92 0.00 1.92 19.00 1.87 0.00 1.87 19.25 1.82 0.00 1.82 19.50 1.78 0.00 1.78 19.75 1.73 0.00 1.73 20.00 1.68 0.00 1.68 Printed 5/28/2021 2021-05-27 Full Routing Prepared by Timmons Gro Type/1 24-hr 100-YR Rainfall=9.16" Printed 5/28/2021 Time span=5.00-20.00 hrs, dt=0.05 hrs, 301 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment 4S: Onsite To Bioretention 1 Runoff Area=4.480 ac 59.82% Impervious Runoff Depth>6.65" Tc=6.0 min CN=83 Runoff=51.32 cfs 2.482 of Subcatchment 5S: Offsite To Bioretention 1 Runoff Area=1.520 ac 33.55% Impervious Runoff Depth>5.45" Tc=6.0 min CN=73 Runoff=14.99 cfs 0.690 of Subcatchment 7S: To Bioretention 2 Runoff Area=2.360 ac 58.05% Impervious Runoff Depth>6.53" Tc=6.0 min CN=82 Runoff=26.71 cfs 1.285 of Subcatchment 9S: To Dry Pond 3 Runoff Area=7.010 ac 60.49% Impervious Runoff Depth>6.65" Tc=6.0 min CN=83 Runoff=80.29 cfs 3.884 of Subcatchment 11S: Onsite Unrouted 4 Runoff Area=0.630 ac 17.46% Impervious Runoff Depth>4.72" Tc=6.0 min CN=67 Runoff=5.50 cfs 0.248 of Subcatchment 12S: Onsite Unrouted 5 Runoff Area=0.300 ac 20.00% Impervious Runoff Depth>4.84" Tc=6.0 min CN=68 Runoff=2.68 cfs 0.121 of Pond 6P: BIORETENTION 1 Peak Elev=415.99' Storage=20,763 cf Inflow=90.40 cfs 4.328 of Outflow=90.15 cfs 3.977 of Pond 8P: BIORETENTION 2 Peak Elev=432.98' Storage=7,858 cf Inflow=26.71 cfs 1.285 of Outflow=23.84 cfs 1.156 of Pond 10P: DRY POND Peak Elev=425.49' Storage=27,051 cf Inflow=80.29 cfs 3.884 of Outflow=79.67 cfs 3.541 of Link 13L: POST Combined Inflow=178.03 cfs 7.887 of Primary=178.03 cfs 7.887 of Total Runoff Area = 16.300 ac Runoff Volume = 8.710 of Average Runoff Depth = 6.41" 44.97% Pervious = 7.330 ac 55.03% Impervious = 8.970 ac 2021-05-27 Full Routing Prepared by Timmons Gro Type/1 24-hr 100-YR Rainfall=9.16" Printed 5/28/2021 Summary for Subcatchment 4S: Onsite To Bioretention 1 Runoff = 51.32 cfs @ 11.96 hrs, Volume= 2.482 af, Depth> 6.65" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24-hr 100-YR Rainfall=9.16" Area (ac) CN Description 2.680 98 Paved parking, HSG B 1.540 61 >75% Grass cover, Good, HSG B 0.260 60 Woods, Fair, HSG B 4.480 83 Weighted Average 1.800 40.18% Pervious Area 2.680 59.82% Impervious Area Tc Length Slope Velocity Capacity Description 6.0 Direct Entry, Subcatchment 4S: Onsite To Bioretention 1 Hydrograph ■ Rurwff Time (hours) 2021-05-27 Full Routing Prepared by Timmons Gro Type/1 24-hr 100-YR Rainfall=9.16" Hydrograph for Subcatchment 4S: Onsite To Bioretention 1 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 5.00 0.58 0.01 0.09 5.25 0.61 0.02 0.11 5.50 0.65 0.03 0.13 5.75 0.69 0.03 0.16 6.00 0.73 0.04 0.18 6.25 0.77 0.06 0.20 6.50 0.82 0.07 0.23 6.75 0.86 0.08 0.26 7.00 0.91 0.10 0.28 7.25 0.95 0.11 0.31 7.50 1.00 0.13 0.34 7.75 1.05 0.15 0.36 8.00 1.10 0.17 0.39 8.25 1.15 0.20 0.44 8.50 1.21 0.23 0.51 8.75 1.28 0.26 0.59 9.00 1.35 0.29 0.67 9.25 1.42 0.33 0.72 9.50 1.49 0.37 0.75 9.75 1.57 0.42 0.84 10.00 1.66 0.47 0.97 10.25 1.76 0.53 1.14 10.50 1.87 0.61 1.34 10.75 2.00 0.69 1.63 11.00 2.15 0.80 1.97 11.25 2.34 0.94 2.61 11.50 2.59 1.13 3.47 11.75 3.54 1.90 16.57 12.00 6.07 4.16 47.87 12.25 6.47 4.53 6.52 12.50 6.73 4.78 4.20 12.75 6.92 4.95 3.07 13.00 7.07 5.10 2.57 13.25 7.20 5.22 2.22 13.50 7.32 5.33 1.94 13.75 7.42 5.43 1.72 14.00 7.51 5.51 1.53 14.25 7.59 5.59 1.41 14.50 7.67 5.67 1.34 14.75 7.75 5.74 1.28 15.00 7.82 5.80 1.21 15.25 7.88 5.87 1.14 15.50 7.95 5.93 1.07 15.75 8.01 5.98 1.00 16.00 8.06 6.04 0.93 16.25 8.11 6.09 0.89 16.50 8.16 6.13 0.87 16.75 8.21 6.18 0.85 17.00 8.26 6.23 0.82 17.25 8.31 6.27 0.80 17.50 8.35 6.31 0.77 17.75 8.39 6.35 0.75 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 18.00 8.44 6.39 0.72 18.25 8.48 6.43 0.70 18.50 8.52 6.47 0.67 18.75 8.55 6.51 0.65 19.00 8.59 6.54 0.62 19.25 8.62 6.58 0.60 19.50 8.66 6.61 0.58 19.75 8.69 6.64 0.55 20.00 8.72 6.67 0.53 Printed 5/28/2021 2021-05-27 Full Routing Prepared by Timmons Gro Type/1 24-hr 100-YR Rainfall=9.16" Printed 5/28/2021 Summary for Subcatchment 5S: Mite To Bioretention 1 Runoff = 14.99 cfs @ 11.97 hrs, Volume= 0.690 af, Depth> 5.45" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24-hr 100-YR Rainfall=9.16" Area (ac) CN Description 0.510 98 Paved parking, HSG B 0.000 61 >75% Grass cover, Good, HSG B 1.010 60 Woods, Fair, HSG B 1.520 73 Weighted Average 1.010 66.45% Pervious Area 0.510 33.55% Impervious Area Tc Length Slope Velocity Capacity Description lminl lfaafl /ft/ft1 (ft/car) lrkc 6.0 Direct Entry, Subcatchment 5S: Mite To Bioretention 1 Hydrograph 15 Type II 24-hr 13 100-YR Rainfall=9.16" 12- Runoff Area=1.520 ac 11 Runoff Volume=0.690 of 10 9 Runoff Depth>5.45" a` LL 7 Tc=6.0 min 6' 5_ CN=73 I -4- 1 7 it 6 7 8 9 10 11 12 13 14 15 16 17 18 19 Time (hours) 0 Runoff 2021-05-27 Full Routing Prepared by Timmons Gro Type/1 24-hr 100-YR Rainfall=9.16" Hydrograph for Subcatchment 5S: Offsite To Bioretention 1 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 5.00 0.58 0.00 0.00 5.25 0.61 0.00 0.00 5.50 0.65 0.00 0.00 5.75 0.69 0.00 0.00 6.00 0.73 0.00 0.00 6.25 0.77 0.00 0.00 6.50 0.82 0.00 0.01 6.75 0.86 0.00 0.01 7.00 0.91 0.01 0.02 7.25 0.95 0.01 0.03 7.50 1.00 0.02 0.03 7.75 1.05 0.02 0.04 8.00 1.10 0.03 0.05 8.25 1.15 0.04 0.06 8.50 1.21 0.05 0.08 8.75 1.28 0.07 0.09 9.00 1.35 0.09 0.11 9.25 1.42 0.11 0.12 9.50 1.49 0.13 0.14 9.75 1.57 0.15 0.16 10.00 1.66 0.18 0.19 10.25 1.76 0.22 0.23 10.50 1.87 0.26 0.28 10.75 2.00 0.32 0.35 11.00 2.15 0.39 0.45 11.25 2.34 0.49 0.61 11.50 2.59 0.62 0.84 11.75 3.54 1.21 4.33 12.00 6.07 3.15 14.17 12.25 6.47 3.48 1.99 12.50 6.73 3.71 1.29 12.75 6.92 3.86 0.95 13.00 7.07 4.00 0.80 13.25 7.20 4.11 0.69 13.50 7.32 4.21 0.61 13.75 7.42 4.30 0.54 14.00 7.51 4.38 0.48 14.25 7.59 4.45 0.44 14.50 7.67 4.52 0.42 14.75 7.75 4.59 0.40 15.00 7.82 4.65 0.38 15.25 7.88 4.71 0.36 15.50 7.95 4.76 0.34 15.75 8.01 4.82 0.32 16.00 8.06 4.86 0.29 16.25 8.11 4.91 0.28 16.50 8.16 4.95 0.27 16.75 8.21 5.00 0.27 17.00 8.26 5.04 0.26 17.25 8.31 5.08 0.25 17.50 8.35 5.12 0.24 17.75 8.39 5.16 0.24 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 18.00 8.44 5.20 0.23 18.25 8.48 5.23 0.22 18.50 8.52 5.27 0.21 18.75 8.55 5.30 0.21 19.00 8.59 5.34 0.20 19.25 8.62 5.37 0.19 19.50 8.66 5.40 0.18 19.75 8.69 5.43 0.17 20.00 8.72 5.45 0.17 Printed 5/28/2021 2021-05-27 Full Routing Prepared by Timmons Gro Type/1 24-hr 100-YR Rainfall=9.16" Printed 5/28/2021 Summary for Subcatchment 7S: To Bioretention 2 Runoff = 26.71 cfs @ 11.96 hrs, Volume= 1.285 af, Depth> 6.53" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24-hr 100-YR Rainfall=9.16" Area (ac) CN Description 1.370 98 Paved parking, HSG B 0.950 61 >75% Grass cover, Good, HSG B 0.040 60 Woods, Fair, HSG B 2.360 82 Weighted Average 0.990 41.95% Pervious Area 1.370 58.05% Impervious Area Tc Length Slope Velocity Capacity Description 6.0 Direct Entry, Subcatchment 7S: To Bioretention 2 Hydrograph ■ Rurwff Time (hours) 2021-05-27 Full Routing Prepared by Timmons Gro Type/1 24-hr 100-YR Rainfall=9.16" Hydrograph for Subcatchment 7S: To Bioretention 2 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 5.00 0.58 0.01 0.04 5.25 0.61 0.01 0.05 5.50 0.65 0.02 0.06 5.75 0.69 0.03 0.07 6.00 0.73 0.03 0.08 6.25 0.77 0.04 0.10 6.50 0.82 0.06 0.11 6.75 0.86 0.07 0.12 7.00 0.91 0.08 0.13 7.25 0.95 0.10 0.15 7.50 1.00 0.11 0.16 7.75 1.05 0.13 0.18 8.00 1.10 0.15 0.19 8.25 1.15 0.17 0.22 8.50 1.21 0.20 0.25 8.75 1.28 0.23 0.29 9.00 1.35 0.27 0.33 9.25 1.42 0.30 0.36 9.50 1.49 0.34 0.37 9.75 1.57 0.39 0.42 10.00 1.66 0.44 0.49 10.25 1.76 0.49 0.57 10.50 1.87 0.56 0.68 10.75 2.00 0.65 0.82 11.00 2.15 0.75 1.00 11.25 2.34 0.89 1.33 11.50 2.59 1.07 1.78 11.75 3.54 1.82 8.54 12.00 6.07 4.05 24.94 12.25 6.47 4.42 3.40 12.50 6.73 4.67 2.20 12.75 6.92 4.84 1.61 13.00 7.07 4.98 1.34 13.25 7.20 5.11 1.16 13.50 7.32 5.22 1.02 13.75 7.42 5.31 0.90 14.00 7.51 5.40 0.80 14.25 7.59 5.48 0.74 14.50 7.67 5.55 0.70 14.75 7.75 5.62 0.67 15.00 7.82 5.69 0.63 15.25 7.88 5.75 0.60 15.50 7.95 5.81 0.56 15.75 8.01 5.87 0.53 16.00 8.06 5.92 0.49 16.25 8.11 5.97 0.47 16.50 8.16 6.01 0.46 16.75 8.21 6.06 0.44 17.00 8.26 6.11 0.43 17.25 8.31 6.15 0.42 17.50 8.35 6.19 0.40 17.75 8.39 6.23 0.39 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 18.00 8.44 6.27 0.38 18.25 8.48 6.31 0.37 18.50 8.52 6.35 0.35 18.75 8.55 6.39 0.34 19.00 8.59 6.42 0.33 19.25 8.62 6.45 0.31 19.50 8.66 6.49 0.30 19.75 8.69 6.52 0.29 20.00 8.72 6.55 0.28 Printed 5/28/2021 2021-05-27 Full Routing Prepared by Timmons Gro Type/1 24-hr 100-YR Rainfall=9.16" Printed 5/28/2021 Summary for Subcatchment 9S: To Dry Pond 3 Runoff = 80.29 cfs @ 11.96 hrs, Volume= 3.884 af, Depth> 6.65" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24-hr 100-YR Rainfall=9.16" Area (ac) CN Description 4.240 98 Paved parking, HSG B 2.770 61 >75% Grass cover, Good, HSG B 0.000 60 Woods, Fair, HSG B 7.010 83 Weighted Average 2.770 39.51 % Pervious Area 4.240 60.49% Impervious Area Tc Length Slope Velocity Capacity Description 6.0 Direct Entry, Subcatchment 9S: To Dry Pond 3 Hydrograph ■ Ruiroff 89- I - r Type II 24-hr 70 100-YR Rainfall=9.16" 65 Runoff Area=7.010 ac 69 55 Runoff Volume=3.884 of w 50 runoff Depth>6.65" 3 45 40 Tc=6.0 min 30 CN=83 25 29 _ 15 1 12 13 14 15 16 17 18 19 Time (hours) 2021-05-27 Full Routing Prepared by Timmons Gro Type/1 24-hr 100-YR Rainfall=9.16" Hydrograph for Subcatchment 9S: To Dry Pond 3 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 5.00 0.58 0.01 0.14 5.25 0.61 0.02 0.17 5.50 0.65 0.03 0.21 5.75 0.69 0.03 0.24 6.00 0.73 0.04 0.28 6.25 0.77 0.06 0.32 6.50 0.82 0.07 0.36 6.75 0.86 0.08 0.40 7.00 0.91 0.10 0.44 7.25 0.95 0.11 0.48 7.50 1.00 0.13 0.53 7.75 1.05 0.15 0.57 8.00 1.10 0.17 0.61 8.25 1.15 0.20 0.69 8.50 1.21 0.23 0.80 8.75 1.28 0.26 0.92 9.00 1.35 0.29 1.05 9.25 1.42 0.33 1.13 9.50 1.49 0.37 1.17 9.75 1.57 0.42 1.31 10.00 1.66 0.47 1.51 10.25 1.76 0.53 1.78 10.50 1.87 0.61 2.10 10.75 2.00 0.69 2.54 11.00 2.15 0.80 3.09 11.25 2.34 0.94 4.09 11.50 2.59 1.13 5.43 11.75 3.54 1.90 25.92 12.00 6.07 4.16 74.91 12.25 6.47 4.53 10.20 12.50 6.73 4.78 6.57 12.75 6.92 4.95 4.81 13.00 7.07 5.10 4.02 13.25 7.20 5.22 3.47 13.50 7.32 5.33 3.04 13.75 7.42 5.43 2.69 14.00 7.51 5.51 2.39 14.25 7.59 5.59 2.21 14.50 7.67 5.67 2.10 14.75 7.75 5.74 2.00 15.00 7.82 5.80 1.89 15.25 7.88 5.87 1.78 15.50 7.95 5.93 1.68 15.75 8.01 5.98 1.57 16.00 8.06 6.04 1.46 16.25 8.11 6.09 1.40 16.50 8.16 6.13 1.36 16.75 8.21 6.18 1.32 17.00 8.26 6.23 1.28 17.25 8.31 6.27 1.25 17.50 8.35 6.31 1.21 17.75 8.39 6.35 1.17 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 18.00 8.44 6.39 1.13 18.25 8.48 6.43 1.09 18.50 8.52 6.47 1.05 18.75 8.55 6.51 1.02 19.00 8.59 6.54 0.98 19.25 8.62 6.58 0.94 19.50 8.66 6.61 0.90 19.75 8.69 6.64 0.86 20.00 8.72 6.67 0.82 Printed 5/28/2021 2021-05-27 Full Routing Prepared by Timmons Gro Type/1 24-hr 100-YR Rainfall=9.16" Printed 5/28/2021 Summary for Subcatchment 11S: Onsite Unrouted 4 Runoff = 5.50 cfs @ 11.97 hrs, Volume= 0.248 af, Depth> 4.72" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24-hr 100-YR Rainfall=9.16" Area (ac) CN Description 0.110 98 Paved parking, HSG B 0.380 61 >75% Grass cover, Good, HSG B 0.140 60 Woods, Fair, HSG B 0.630 67 Weighted Average 0.520 82.54% Pervious Area 0.110 17.46% Impervious Area Tc Length Slope Velocity Capacity Description lminl lfaafl /ft/ft1 (ft/car) lrfcl 6.0 Direct Entry, Subcatchment 11S: Onsite Unrouted 4 Hydrograph Type II 24-hr 5- 100-YR Rainfall=9.16" Runoff Area=0.630 ae 4 Runoff Volume=0.248 of Runoff Depth>4.72" LL 3- Tc=6.0 min 211 U i i I �N=I67 i 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Time (hours) ❑ RunoH 2021-05-27 Full Routing Prepared by Timmons Gro Type II 24-hr 100-YR Rainfall=9.16" Hydrograph for Subcatchment 11S: Onsite Unrouted 4 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 5.00 0.58 0.00 0.00 5.25 0.61 0.00 0.00 5.50 0.65 0.00 0.00 5.75 0.69 0.00 0.00 6.00 0.73 0.00 0.00 6.25 0.77 0.00 0.00 6.50 0.82 0.00 0.00 6.75 0.86 0.00 0.00 7.00 0.91 0.00 0.00 7.25 0.95 0.00 0.00 7.50 1.00 0.00 0.00 7.75 1.05 0.00 0.00 8.00 1.10 0.00 0.00 8.25 1.15 0.01 0.01 8.50 1.21 0.01 0.01 8.75 1.28 0.02 0.02 9.00 1.35 0.02 0.02 9.25 1.42 0.04 0.03 9.50 1.49 0.05 0.03 9.75 1.57 0.06 0.04 10.00 1.66 0.08 0.05 10.25 1.76 0.10 0.06 10.50 1.87 0.13 0.08 10.75 2.00 0.17 0.10 11.00 2.15 0.22 0.13 11.25 2.34 0.29 0.19 11.50 2.59 0.40 0.27 11.75 3.54 0.88 1.46 12.00 6.07 2.59 5.24 12.25 6.47 2.89 0.76 12.50 6.73 3.10 0.49 12.75 6.92 3.24 0.36 13.00 7.07 3.36 0.31 13.25 7.20 3.47 0.26 13.50 7.32 3.56 0.23 13.75 7.42 3.65 0.21 14.00 7.51 3.72 0.18 14.25 7.59 3.79 0.17 14.50 7.67 3.85 0.16 14.75 7.75 3.91 0.15 15.00 7.82 3.97 0.15 15.25 7.88 4.03 0.14 15.50 7.95 4.08 0.13 15.75 8.01 4.13 0.12 16.00 8.06 4.17 0.11 16.25 8.11 4.22 0.11 16.50 8.16 4.26 0.11 16.75 8.21 4.30 0.10 17.00 8.26 4.34 0.10 17.25 8.31 4.38 0.10 17.50 8.35 4.41 0.10 17.75 8.39 4.45 0.09 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 18.00 8.44 4.49 0.09 18.25 8.48 4.52 0.09 18.50 8.52 4.55 0.08 18.75 8.55 4.58 0.08 19.00 8.59 4.62 0.08 19.25 8.62 4.64 0.07 19.50 8.66 4.67 0.07 19.75 8.69 4.70 0.07 20.00 8.72 4.73 0.07 Printed 5/28/2021 2021-05-27 Full Routing Prepared by Timmons Gro Type II 24-hr 100-YR Rainfall=9.16" Printed 5/28/2021 Summary for Subcatchment 12S: Onsite Unrouted 5 Runoff = 2.68 cfs @ 11.97 hrs, Volume= 0.121 af, Depth> 4.84" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24-hr 100-YR Rainfall=9.16" Area (ac) CN Description 0.060 98 Paved parking, HSG B 0.200 61 >75% Grass cover, Good, HSG B 0.040 60 Woods, Fair, HSG B 0.300 68 Weighted Average 0.240 80.00% Pervious Area 0.060 20.00% Impervious Area Tc Length Slope Velocity Capacity Description 6.0 Direct Entry, Subcatchment 12S: Onsite Unrouted 5 Hydrograph ❑ RunoH Type II 24-hr 100-YR Rainfall=9.16" - Runoff Area=0.300 ac 2 Runoff Volume=0.121af Runoff Depth>4.84" Tc=6.0 min 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Time (hours) 2021-05-27 Full Routing Prepared by Timmons Gro Type II 24-hr 100-YR Rainfall=9.16" Hydrograph for Subcatchment 12S: Onsite Unrouted 5 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 5.00 0.58 0.00 0.00 5.25 0.61 0.00 0.00 5.50 0.65 0.00 0.00 5.75 0.69 0.00 0.00 6.00 0.73 0.00 0.00 6.25 0.77 0.00 0.00 6.50 0.82 0.00 0.00 6.75 0.86 0.00 0.00 7.00 0.91 0.00 0.00 7.25 0.95 0.00 0.00 7.50 1.00 0.00 0.00 7.75 1.05 0.00 0.00 8.00 1.10 0.01 0.00 8.25 1.15 0.01 0.00 8.50 1.21 0.01 0.01 8.75 1.28 0.02 0.01 9.00 1.35 0.03 0.01 9.25 1.42 0.04 0.01 9.50 1.49 0.06 0.02 9.75 1.57 0.07 0.02 10.00 1.66 0.09 0.03 10.25 1.76 0.12 0.03 10.50 1.87 0.15 0.04 10.75 2.00 0.19 0.05 11.00 2.15 0.25 0.07 11.25 2.34 0.32 0.09 11.50 2.59 0.43 0.13 11.75 3.54 0.93 0.72 12.00 6.07 2.68 2.55 12.25 6.47 2.99 0.37 12.50 6.73 3.20 0.24 12.75 6.92 3.34 0.18 13.00 7.07 3.47 0.15 13.25 7.20 3.58 0.13 13.50 7.32 3.67 0.11 13.75 7.42 3.75 0.10 14.00 7.51 3.83 0.09 14.25 7.59 3.90 0.08 14.50 7.67 3.96 0.08 14.75 7.75 4.02 0.07 15.00 7.82 4.08 0.07 15.25 7.88 4.14 0.07 15.50 7.95 4.19 0.06 15.75 8.01 4.24 0.06 16.00 8.06 4.29 0.06 16.25 8.11 4.33 0.05 16.50 8.16 4.37 0.05 16.75 8.21 4.41 0.05 17.00 8.26 4.45 0.05 17.25 8.31 4.49 0.05 17.50 8.35 4.53 0.05 17.75 8.39 4.57 0.04 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 18.00 8.44 4.60 0.04 18.25 8.48 4.64 0.04 18.50 8.52 4.67 0.04 18.75 8.55 4.70 0.04 19.00 8.59 4.74 0.04 19.25 8.62 4.76 0.04 19.50 8.66 4.79 0.03 19.75 8.69 4.82 0.03 20.00 8.72 4.85 0.03 Printed 5/28/2021 2021-05-27 Full Routing Prepared by Timmons Gro Type/1 24-hr 100-YR Rainfall=9.16" Summary for Pond 6P: BIORETENTION 1 Printed 5/28/2021 Inflow Area = 8.360 ac, 54.55% Impervious, Inflow Depth > 6.21" for 100-YR event Inflow = 90.40 cfs @ 11.97 hrs, Volume= 4.328 of Outflow = 90.15 cfs @ 11.98 hrs, Volume= 3.977 af, Atten= 0%, Lag= 0.5 min Primary = 90.15 cfs @ 11.98 hrs, Volume= 3.977 of Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Peak Elev= 415.99' @ 11.98 hrs Surf.Area= 6,578 sf Storage= 20,763 cf Plug -Flow detention time= 48.3 min calculated for 3.977 of (92% of inflow) Center -of -Mass det. time= 19.2 min ( 783.1 - 763.9 ) Volume Invert Avail.Storage Storage Description #1 406.00' 32,374 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Voids Inc.Store Cum.Store (feet) (sq-ft) M (cubic -feet) (cubic -feet) 406.00 3,808 0.0 0 0 411.00 3,808 40.0 7,616 7,616 414.00 3,808 25.0 2,856 10,472 415.00 5,174 100.0 4,491 14,963 416.00 6,596 100.0 5,885 20,848 417.50 8,772 100.0 11,526 32,374 Device Routing Invert Outlet Devices #1 Primary 409.71' 36.0" Round HDPE_Round 36" L= 47.6' RCP, sq.cut end projecting, Ke= 0.500 Inlet / Outlet Invert= 409.71' / 409.00' S= 0.0149 '/' Cc= 0.900 n= 0.010 PVC, smooth interior, Flow Area= 7.07 sf #2 Device 1 415.00' 60.0" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #3 Primary 415.70' 95.0' long x 1.0' breadth Broad -Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 Coef. (English) 2.69 2.72 2.75 2.85 2.98 3.08 3.20 3.28 3.31 3.30 3.31 3.32 Primary OutFlow Max=86.90 cfs @ 11.98 hrs HW=415.98' (Free Discharge) 1'�--3=Broad-C 1=HDPERound 36" (Passes 49.57 cfs of 74.31 cfs potential flow) 2=Orifice/Grate (Weir Controls 49.57 cfs @ 3.23 fps) rested Rectangular Weir (Weir Controls 37.33 cfs @ 1.42 fps) 2021-05-27 Full Routing Prepared by Timmons Gro Type/1 24-hr 100-YR Rainfall=9.16" Pond 6P: BIORETENTION 1 Hydrograph Time (hours) Pond 6P: BIORETENTION 1 Stage -Discharge Discharge (cfs) Printed 5/28/2021 ■ Inflow ■ Primary ❑ Primary 2021-05-27 Full Routing Prepared by Timmons Grc Type 1124-hr 100-YR Rainfall=9.16" Pond 6P: BIORETENTION 1 Stage -Area -Storage Storage (cubic -feet) Printed 5/28/2021 ■ Surface ■ Storage 2021-05-27 Full Routing Prepared by Timmons Gro Type/1 24-hr 100-YR Rainfall=9.16" Hydrograph for Pond 6P: BIORETENTION 1 Time Inflow Storage Elevation Primary (hours) (cfs) (cubic -feet) (feet) (cfs) 5.00 0.09 8 406.01 0.00 5.50 0.13 206 406.14 0.00 6.00 0.18 488 406.32 0.00 6.50 0.24 862 406.57 0.00 7.00 0.30 1,349 406.89 0.00 7.50 0.37 1,955 407.28 0.00 8.00 0.44 2,684 407.76 0.00 8.50 0.59 3,595 408.36 0.00 9.00 0.78 4,822 409.17 0.00 9.50 0.88 6,335 410.16 0.00 10.00 1.15 8,135 411.55 0.00 10.50 1.62 10,607 414.04 0.00 11.00 3.37 14,506 414.91 0.00 11.50 6.03 16,194 415.23 5.78 12.00 85.80 20,701 415.98 87.59 12.50 7.81 16,569 415.30 8.42 13.00 4.75 16,069 415.21 4.89 13.50 3.59 15,858 415.17 3.69 14.00 2.82 15,709 415.14 2.89 14.50 2.48 15,637 415.13 2.50 15.00 2.23 15,590 415.12 2.25 15.50 1.98 15,544 415.11 2.01 16.00 1.73 15,498 415.10 1.75 16.50 1.60 15,471 415.10 1.61 17.00 1.51 15,455 415.09 1.52 17.50 1.42 15,438 415.09 1.43 18.00 1.33 15,421 415.09 1.34 18.50 1.24 15,403 415.08 1.26 19.00 1.15 15,372 415.08 1.17 19.50 1.06 15,341 415.07 1.08 20.00 0.97 15,309 415.07 0.99 Printed 5/28/2021 2021-05-27 Full Routing Prepared by Timmons Gro Elevation Primary (feet) (cfs) 406.00 0.00 406.06 0.00 406.12 0.00 406.18 0.00 406.24 0.00 406.30 0.00 406.36 0.00 406.42 0.00 406.48 0.00 406.54 0.00 406.60 0.00 406.66 0.00 406.72 0.00 406.78 0.00 406.84 0.00 406.90 0.00 406.96 0.00 407.02 0.00 407.08 0.00 407.14 0.00 407.20 0.00 407.26 0.00 407.32 0.00 407.38 0.00 407.44 0.00 407.50 0.00 407.56 0.00 407.62 0.00 407.68 0.00 407.74 0.00 407.80 0.00 407.86 0.00 407.92 0.00 407.98 0.00 408.04 0.00 408.10 0.00 408.16 0.00 408.22 0.00 408.28 0.00 408.34 0.00 408.40 0.00 408.46 0.00 408.52 0.00 408.58 0.00 408.64 0.00 408.70 0.00 408.76 0.00 408.82 0.00 408.88 0.00 408.94 0.00 409.00 0.00 409.06 0.00 Type II 24-hr 100-YR Rainfall=9.16" Stage -Discharge for Pond 6P: BIORETENTION 1 Elevation Primary (feet) (cfs) 409.12 0.00 409.18 0.00 409.24 0.00 409.30 0.00 409.36 0.00 409.42 0.00 409.48 0.00 409.54 0.00 409.60 0.00 409.66 0.00 409.72 0.00 409.78 0.00 409.84 0.00 409.90 0.00 409.96 0.00 410.02 0.00 410.08 0.00 410.14 0.00 410.20 0.00 410.26 0.00 410.32 0.00 410.38 0.00 410.44 0.00 410.50 0.00 410.56 0.00 410.62 0.00 410.68 0.00 410.74 0.00 410.80 0.00 410.86 0.00 410.92 0.00 410.98 0.00 411.04 0.00 411.10 0.00 411.16 0.00 411.22 0.00 411.28 0.00 411.34 0.00 411.40 0.00 411.46 0.00 411.52 0.00 411.58 0.00 411.64 0.00 411.70 0.00 411.76 0.00 411.82 0.00 411.88 0.00 411.94 0.00 412.00 0.00 412.06 0.00 412.12 0.00 412.18 0.00 Elevation Primary (feet) (cfs) 412.24 0.00 412.30 0.00 412.36 0.00 412.42 0.00 412.48 0.00 412.54 0.00 412.60 0.00 412.66 0.00 412.72 0.00 412.78 0.00 412.84 0.00 412.90 0.00 412.96 0.00 413.02 0.00 413.08 0.00 413.14 0.00 413.20 0.00 413.26 0.00 413.32 0.00 413.38 0.00 413.44 0.00 413.50 0.00 413.56 0.00 413.62 0.00 413.68 0.00 413.74 0.00 413.80 0.00 413.86 0.00 413.92 0.00 413.98 0.00 414.04 0.00 414.10 0.00 414.16 0.00 414.22 0.00 414.28 0.00 414.34 0.00 414.40 0.00 414.46 0.00 414.52 0.00 414.58 0.00 414.64 0.00 414.70 0.00 414.76 0.00 414.82 0.00 414.88 0.00 414.94 0.00 415.00 0.00 415.06 0.75 415.12 2.14 415.18 3.92 415.24 6.04 415.30 8.44 Printed 5/28/2021 Elevation Primary (feet) (cfs) 415.36 11.09 415.42 13.98 415.48 17.08 415.54 20.38 415.60 23.87 415.66 27.54 415.72 32.10 415.78 41.17 415.84 52.93 415.90 66.71 415.96 82.31 416.02 99.48 416.08 118.11 416.14 138.10 416.20 159.38 416.26 181.89 416.32 204.94 416.38 226.01 416.44 248.37 416.50 272.01 416.56 297.61 416.62 324.62 416.68 353.05 416.74 382.31 416.80 412.56 416.86 444.09 416.92 477.15 416.98 512.09 417.04 548.43 417.10 586.18 417.16 623.34 417.22 661.67 417.28 701.19 417.34 739.89 417.40 778.51 417.46 817.97 2021-05-27 Full Routing Prepared by Timmons Gro Type/1 24-hr 100-YR Rainfall=9.16" Stage -Area -Storage for Pond 6P: BIORETENTION 1 Elevation Surface Storage (feet) (sq-ft) (cubic -feet) 406.00 3,808 0 406.15 3,808 228 406.30 3,808 457 406.45 3,808 685 406.60 3,808 914 406.75 3,808 1,142 406.90 3,808 1,371 407.05 3,808 1,599 407.20 3,808 1,828 407.35 3,808 2,056 407.50 3,808 2,285 407.65 3,808 2,513 407.80 3,808 2,742 407.95 3,808 2,970 408.10 3,808 3,199 408.25 3,808 3,427 408.40 3,808 3,656 408.55 3,808 3,884 408.70 3,808 4,113 408.85 3,808 4,341 409.00 3,808 4,570 409.15 3,808 4,798 409.30 3,808 5,027 409.45 3,808 5,255 409.60 3,808 5,484 409.75 3,808 5,712 409.90 3,808 5,940 410.05 3,808 6,169 410.20 3,808 6,397 410.35 3,808 6,626 410.50 3,808 6,854 410.65 3,808 7,083 410.80 3,808 7,311 410.95 3,808 7,540 411.10 3,808 7,711 411.25 3,808 7,854 411.40 3,808 7,997 411.55 3,808 8,140 411.70 3,808 8,282 411.85 3,808 8,425 412.00 3,808 8,568 412.15 3,808 8,711 412.30 3,808 8,854 412.45 3,808 8,996 412.60 3,808 9,139 412.75 3,808 9,282 412.90 3,808 9,425 413.05 3,808 9,568 413.20 3,808 9,710 413.35 3,808 9,853 413.50 3,808 9,996 413.65 3,808 10,139 Elevation Surface Storage (feet) (sq-ft) (cubic -feet) 413.80 3,808 10,282 413.95 3,808 10,424 414.10 3,945 10,860 414.25 4,150 11,467 414.40 4,354 12,104 414.55 4,559 12,773 414.70 4,764 13,472 414.85 4,969 14,202 415.00 5,174 14,963 415.15 5,387 15,755 415.30 5,601 16,579 415.45 5,814 17,435 415.60 6,027 18,323 415.75 6,241 19,243 415.90 6,454 20,196 416.05 6,669 21,180 416.20 6,886 22,196 416.35 7,104 23,245 416.50 7,321 24,327 416.65 7,539 25,442 416.80 7,757 26,589 416.95 7,974 27,769 417.10 8,192 28,981 417.25 8,409 30,226 417.40 8,627 31,504 Printed 5/28/2021 2021-05-27 Full Routing Prepared by Timmons Gro Type II 24-hr 100-YR Rainfall=9.16" Summary for Pond 8P: BIORETENTION 2 [82] Warning: Early inflow requires earlier time span Printed 5/28/2021 Inflow Area = 2.360 ac, 58.05% Impervious, Inflow Depth > 6.53" for 100-YR event Inflow = 26.71 cfs @ 11.96 hrs, Volume= 1.285 of Outflow = 23.84 cfs @ 11.98 hrs, Volume= 1.156 af, Atten= 11%, Lag= 1.1 min Primary = 23.84 cfs @ 11.98 hrs, Volume= 1.156 of Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Peak Elev= 432.98' @ 12.00 hrs Surf.Area= 2,344 sf Storage= 7,858 cf Plug -Flow detention time= 58.7 min calculated for 1.152 of (90% of inflow) Center -of -Mass det. time= 24.6 min ( 780.4 - 755.8 ) Volume Invert Avail.Storage Storage Description #1 423.91' 10,323 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Voids Inc.Store Cum.Store (feet) (sq-ft) M (cubic -feet) (cubic -feet) 423.91 1,587 0.0 0 0 427.91 1,587 40.0 2,539 2,539 430.91 1,587 25.0 1,190 3,729 431.00 1,627 100.0 145 3,874 432.00 2,041 100.0 1,834 5,708 433.00 2,350 100.0 2,196 7,904 434.00 2,489 100.0 2,420 10,323 Device Routing Invert Outlet Devices #1 Primary 424.43' 18.0" Round HDPE_Round 18" L= 61.4' RCP, sq.cut end projecting, Ke= 0.500 Inlet / Outlet Invert= 424.43' / 423.82' S= 0.0099 '/' Cc= 0.900 n= 0.010 PVC, smooth interior, Flow Area= 1.77 sf #2 Device 1 431.91' 36.0" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads Primary OutFlow Max=23.68 cfs @ 11.98 hrs HW=432.93' (Free Discharge) t1=HDPE_Round 18" (Inlet Controls 23.68 cfs @ 13.40 fps) L2=Orifice/Grate (Passes 23.68 cfs of 31.62 cfs potential flow) 2021-05-27 Full Routing Prepared by Timmons Grc 28 26 24 22 20 18 16 c 14 LL 12 10 8 6 4 2 0 i c 0 A 0 W Type 11 24-hr 100-YR Rainfall=9.16" Printed 5/28/2021 Pond 8P: BIORETENTION 2 Hydrograph Inflow Area*�_l • . . e �--, 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Time (hours) Pond 8P: BIORETENTION 2 Stage -Discharge Discharge (ds) ■ Inflow ■ Primary ■ Primary 2021-05-27 Full Routing Prepared by Timmons Gro 434 _ 433- 432 431_ 430- p 429- m d 428- W 427- 426 425- 424- Type 11 24-hr 100-YR Rainfall=9.16" Printed 5/28/2021 Pond 8P: BIORETENTION 2 Stage -Area -Storage Surface/Horizontal/Wetted Area (sq-ft) n Inn Ann nnn nn A nnn A 9nn 4 Ann 4 ¢nn 4 Cnn 7 nnn I Onn O nnn 1NINON■�■■ polo ,10111 Mom IMEN IMMIMM11 I■■■1■I■IN ■�■�■■�� I■■■1■I■IN ' ■,■I■■11 I■■■1■I■I, ■,■I■■11 I■■■1■I■I, 0 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10,000 Storage (cubic -feet) ❑ Surface ❑ Storage 2021-05-27 Full Routing Prepared by Timmons Gro Type/1 24-hr 100-YR Rainfall=9.16" Hydrograph for Pond 8P: BIORETENTION 2 Time Inflow Storage Elevation Primary (hours) (cfs) (cubic -feet) (feet) (cfs) 5.00 0.04 3 423.92 0.00 5.50 0.06 88 424.05 0.00 6.00 0.08 215 424.25 0.00 6.50 0.11 386 424.52 0.00 7.00 0.13 604 424.86 0.00 7.50 0.16 871 425.28 0.00 8.00 0.19 1,189 425.78 0.00 8.50 0.25 1,582 426.40 0.00 9.00 0.33 2,107 427.23 0.00 9.50 0.37 2,750 428.44 0.00 10.00 0.49 3,509 430.35 0.00 10.50 0.68 4,545 431.39 0.00 11.00 1.00 5,722 432.01 0.95 11.50 1.78 5,817 432.05 1.71 12.00 24.94 7,854 432.98 23.76 12.50 2.20 5,888 432.09 2.32 13.00 1.34 5,776 432.03 1.38 13.50 1.02 5,733 432.01 1.04 14.00 0.80 5,706 432.00 0.82 14.50 0.70 5,689 431.99 0.71 15.00 0.63 5,678 431.99 0.64 15.50 0.56 5,665 431.98 0.57 16.00 0.49 5,648 431.97 0.50 16.50 0.46 5,638 431.97 0.46 17.00 0.43 5,632 431.96 0.43 17.50 0.40 5,626 431.96 0.41 18.00 0.38 5,619 431.96 0.38 18.50 0.35 5,613 431.95 0.36 19.00 0.33 5,607 431.95 0.33 19.50 0.30 5,601 431.95 0.31 20.00 0.28 5,594 431.94 0.28 Printed 5/28/2021 2021-05-27 Full Routing Prepared by Timmons Gro Elevation Primary (feet) (cfs) 423.91 0.00 423.97 0.00 424.03 0.00 424.09 0.00 424.15 0.00 424.21 0.00 424.27 0.00 424.33 0.00 424.39 0.00 424.45 0.00 424.51 0.00 424.57 0.00 424.63 0.00 424.69 0.00 424.75 0.00 424.81 0.00 424.87 0.00 424.93 0.00 424.99 0.00 425.05 0.00 425.11 0.00 425.17 0.00 425.23 0.00 425.29 0.00 425.35 0.00 425.41 0.00 425.47 0.00 425.53 0.00 425.59 0.00 425.65 0.00 425.71 0.00 425.77 0.00 425.83 0.00 425.89 0.00 425.95 0.00 426.01 0.00 426.07 0.00 426.13 0.00 426.19 0.00 426.25 0.00 426.31 0.00 426.37 0.00 426.43 0.00 426.49 0.00 426.55 0.00 426.61 0.00 426.67 0.00 426.73 0.00 426.79 0.00 426.85 0.00 426.91 0.00 426.97 0.00 Type 11 24-hr 100-YR Rainfall=9.16" Stage -Discharge for Pond 8P: BIORETENTION 2 Elevation Primary (feet) (cfs) 427.03 0.00 427.09 0.00 427.15 0.00 427.21 0.00 427.27 0.00 427.33 0.00 427.39 0.00 427.45 0.00 427.51 0.00 427.57 0.00 427.63 0.00 427.69 0.00 427.75 0.00 427.81 0.00 427.87 0.00 427.93 0.00 427.99 0.00 428.05 0.00 428.11 0.00 428.17 0.00 428.23 0.00 428.29 0.00 428.35 0.00 428.41 0.00 428.47 0.00 428.53 0.00 428.59 0.00 428.65 0.00 428.71 0.00 428.77 0.00 428.83 0.00 428.89 0.00 428.95 0.00 429.01 0.00 429.07 0.00 429.13 0.00 429.19 0.00 429.25 0.00 429.31 0.00 429.37 0.00 429.43 0.00 429.49 0.00 429.55 0.00 429.61 0.00 429.67 0.00 429.73 0.00 429.79 0.00 429.85 0.00 429.91 0.00 429.97 0.00 430.03 0.00 430.09 0.00 Elevation Primary (feet) (cfs) 430.15 0.00 430.21 0.00 430.27 0.00 430.33 0.00 430.39 0.00 430.45 0.00 430.51 0.00 430.57 0.00 430.63 0.00 430.69 0.00 430.75 0.00 430.81 0.00 430.87 0.00 430.93 0.00 430.99 0.00 431.05 0.00 431.11 0.00 431.17 0.00 431.23 0.00 431.29 0.00 431.35 0.00 431.41 0.00 431.47 0.00 431.53 0.00 431.59 0.00 431.65 0.00 431.71 0.00 431.77 0.00 431.83 0.00 431.89 0.00 431.95 0.25 432.01 0.97 432.07 1.97 432.13 3.18 432.19 4.57 432.25 6.11 432.31 7.80 432.37 9.62 432.43 11.56 432.49 13.61 432.55 15.78 432.61 18.05 432.67 20.42 432.73 22.88 432.79 23.47 432.85 23.56 432.91 23.66 432.97 23.75 433.03 23.84 433.09 23.93 433.15 24.02 433.21 24.11 Printed 5/28/2021 Elevation Primary (feet) (cfs) 433.27 24.20 433.33 24.29 433.39 24.38 433.45 24.47 433.51 24.56 433.57 24.65 433.63 24.73 433.69 24.82 433.75 24.91 433.81 25.00 433.87 25.08 433.93 25.17 433.99 25.26 2021-05-27 Full Routing Prepared by Timmons Gro Type II 24-hr 100-YR Rainfall=9.16" Stage -Area -Storage for Pond 8P: BIORETENTION 2 Elevation Surface Storage (feet) (sq-ft) (cubic -feet) 423.91 1,587 0 424.06 1,587 95 424.21 1,587 190 424.36 1,587 286 424.51 1,587 381 424.66 1,587 476 424.81 1,587 571 424.96 1,587 667 425.11 1,587 762 425.26 1,587 857 425.41 1,587 952 425.56 1,587 1,047 425.71 1,587 1,143 425.86 1,587 1,238 426.01 1,587 1,333 426.16 1,587 1,428 426.31 1,587 1,524 426.46 1,587 1,619 426.61 1,587 1,714 426.76 1,587 1,809 426.91 1,587 1,904 427.06 1,587 2,000 427.21 1,587 2,095 427.36 1,587 2,190 427.51 1,587 2,285 427.66 1,587 2,381 427.81 1,587 2,476 427.96 1,587 2,559 428.11 1,587 2,619 428.26 1,587 2,678 428.41 1,587 2,738 428.56 1,587 2,797 428.71 1,587 2,857 428.86 1,587 2,916 429.01 1,587 2,976 429.16 1,587 3,035 429.31 1,587 3,095 429.46 1,587 3,154 429.61 1,587 3,214 429.76 1,587 3,273 429.91 1,587 3,333 430.06 1,587 3,392 430.21 1,587 3,452 430.36 1,587 3,511 430.51 1,587 3,571 430.66 1,587 3,630 430.81 1,587 3,690 430.96 1,609 3,809 431.11 1,673 4,056 431.26 1,735 4,311 431.41 1,797 4,576 431.56 1,859 4,850 Elevation Surface Storage (feet) (sq-ft) (cubic -feet) 431.71 1,921 5,134 431.86 1,983 5,426 432.01 2,044 5,729 432.16 2,090 6,039 432.31 2,137 6,356 432.46 2,183 6,680 432.61 2,229 7,011 432.76 2,276 7,348 432.91 2,322 7,693 433.06 2,358 8,045 433.21 2,379 8,400 433.36 2,400 8,759 433.51 2,421 9,120 433.66 2,442 9,485 433.81 2,463 9,853 433.96 2,483 10,224 Printed 5/28/2021 2021-05-27 Full Routing Prepared by Timmons Gro Type/1 24-hr 100-YR Rainfall=9.16" Summary for Pond 10P: DRY POND [82] Warning: Early inflow requires earlier time span Printed 5/28/2021 Inflow Area = 7.010 ac, 60.49% Impervious, Inflow Depth > 6.65" for 100-YR event Inflow = 80.29 cfs @ 11.96 hrs, Volume= 3.884 of Outflow = 79.67 cfs @ 11.98 hrs, Volume= 3.541 af, Atten= 1 %, Lag= 0.8 min Primary = 79.67 cfs @ 11.98 hrs, Volume= 3.541 of Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Peak Elev= 425.49' @ 11.98 hrs Surf.Area= 6,147 sf Storage= 27,051 cf Plug -Flow detention time= 54.1 min calculated for 3.529 of (91% of inflow) Center -of -Mass det. time= 23.1 min ( 777.1 - 754.0 ) Volume Invert Avail.Storage Storage Description #1 418.00' 33,448 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic -feet) (cubic -feet) 418.00 1,082 0 0 419.00 1,611 1,347 1,347 420.00 2,218 1,915 3,261 421.00 2,905 2,562 5,823 422.00 3,711 3,308 9,131 423.00 4,590 4,151 13,281 424.00 5,526 5,058 18,339 424.10 5,622 557 18,896 425.00 5,935 5,201 24,097 426.00 6,368 6,152 30,249 426.50 6,431 3,200 33,448 Device Routino Invert Outlet Devices #1 Primary 417.90' 24.0" Round Culvert L= 117.9' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 417.90' / 417.01' S= 0.0075 '/' Cc= 0.900 n= 0.010 PVC, smooth interior, Flow Area= 3.14 sf #2 Device 1 418.00' 4.0" W x 4.2" H Vert. Orifice/Grate C= 0.600 #3 Device 1 423.92' 60.0" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #4 Primary 424.99' 45.0' long x 5.0' breadth Broad -Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 Primary OutFlow Max=76.81 cfs @ 11.98 hrs HW=425.47' (Free Discharge) 1=Culvert (Inlet Controls 38.76 cfs @ 12.34 fps) -2=Orifice/Grate (Passes < 1.52 cfs potential flow) 3=Orifice/Grate (Passes < 98.73 cfs potential flow) =Broad -Crested Rectangular Weir (Weir Controls 38.05 cfs @ 1.78 fps) 2021-05-27 Full Routing Prepared by Timmons Grc Pond 10P: DRY POND Hydrograph Time (hours) Pond 10P: DRY POND Stage -Discharge Discharge (ds) Type 11 24-hr 100-YR Rainfall=9.16" Printed 5/28/2021 ■ Inflow ■ Primary ❑ Primary 2021-05-27 Full Routing Prepared by Timmons Grc Pond 10P: DRY POND Stage -Area -Storage Surface/Horizontal/Wetted Area (sq-ft) Type 11 24-hr 100-YR Rainfall=9.16" Printed 5/28/2021 ■ Surface ■ Storage 2021-05-27 Full Routing Prepared by Timmons Gro Type/1 24-hr 100-YR Rainfall=9.16" Hydrograph for Pond 10P: DRY POND Time Inflow Storage Elevation Primary (hours) (cfs) (cubic -feet) (feet) (cfs) 5.00 0.14 12 418.01 0.00 5.50 0.21 237 418.21 0.10 6.00 0.28 393 418.34 0.21 6.50 0.36 526 418.44 0.28 7.00 0.44 684 418.56 0.34 7.50 0.53 881 418.70 0.40 8.00 0.61 1,124 418.86 0.46 8.50 0.80 1,484 419.08 0.53 9.00 1.05 2,099 419.43 0.63 9.50 1.17 2,898 419.83 0.72 10.00 1.51 3,888 420.27 0.81 10.50 2.10 5,541 420.90 0.93 11.00 3.09 8,354 421.79 1.07 11.50 5.43 13,726 423.10 1.25 12.00 74.91 26,933 425.47 77.43 12.50 6.57 19,183 424.15 7.14 13.00 4.02 18,689 424.06 4.19 13.50 3.04 18,484 424.03 3.15 14.00 2.39 18,326 424.00 2.48 14.50 2.10 18,224 423.98 2.14 15.00 1.89 18,159 423.97 1.93 15.50 1.68 18,093 423.96 1.71 16.00 1.46 18,010 423.94 1.53 16.50 1.36 17,927 423.92 1.39 17.00 1.28 17,863 423.91 1.35 17.50 1.21 17,688 423.88 1.34 18.00 1.13 17,384 423.82 1.34 18.50 1.05 16,956 423.74 1.33 19.00 0.98 16,410 423.64 1.31 19.50 0.90 15,750 423.51 1.30 20.00 0.82 14,982 423.36 1.28 Printed 5/28/2021 2021-05-27 Full Routing Prepared by Timmons Gro Elevation Primary (feet) (cfs) 418.00 0.00 418.10 0.03 418.20 0.10 418.30 0.18 418.40 0.26 418.50 0.32 418.60 0.36 418.70 0.41 418.80 0.44 418.90 0.48 419.00 0.51 419.10 0.54 419.20 0.57 419.30 0.60 419.40 0.62 419.50 0.65 419.60 0.67 419.70 0.69 419.80 0.72 419.90 0.74 420.00 0.76 420.10 0.78 420.20 0.80 420.30 0.82 420.40 0.84 420.50 0.86 420.60 0.87 420.70 0.89 420.80 0.91 420.90 0.93 421.00 0.94 421.10 0.96 421.20 0.98 421.30 0.99 421.40 1.01 421.50 1.02 421.60 1.04 421.70 1.05 421.80 1.07 421.90 1.08 422.00 1.10 422.10 1.11 422.20 1.13 422.30 1.14 422.40 1.15 422.50 1.17 422.60 1.18 422.70 1.19 422.80 1.21 422.90 1.22 423.00 1.23 423.10 1.25 Type/1 24-hr 100-YR Rainfall=9.16" Stage -Discharge for Pond 10P: DRY POND Elevation Primary (feet) (cfs) 423.20 1.26 423.30 1.27 423.40 1.28 423.50 1.30 423.60 1.31 423.70 1.32 423.80 1.33 423.90 1.34 424.00 2.52 424.10 5.29 424.20 8.99 424.30 13.42 424.40 18.48 424.50 24.10 424.60 30.23 424.70 36.43 424.80 36.74 424.90 37.05 425.00 37.47 425.10 41.51 425.20 48.14 425.30 57.13 425.40 68.22 425.50 81.64 425.60 97.02 425.70 111.84 425.80 127.65 425.90 144.71 426.00 162.67 426.10 181.05 426.20 200.16 426.30 220.25 426.40 241.08 426.50 262.97 Printed 5/28/2021 2021-05-27 Full Routing Prepared by Timmons Gro Type/1 24-hr 100-YR Rainfall=9.16" Stage -Area -Storage for Pond 10P: DRY POND Elevation Surface Storage (feet) (sq-ft) (cubic -feet) 418.00 1,082 0 418.10 1,135 ill 418.20 1,188 227 418.30 1,241 348 418.40 1,294 475 418.50 1,347 607 418.60 1,399 744 418.70 1,452 887 418.80 1,505 1,035 418.90 1,558 1,188 419.00 1,611 1,347 419.10 1,672 1,511 419.20 1,732 1,681 419.30 1,793 1,857 419.40 1,854 2,039 419.50 1,915 2,228 419.60 1,975 2,422 419.70 2,036 2,623 419.80 2,097 2,830 419.90 2,157 3,042 420.00 2,218 3,261 420.10 2,287 3,486 420.20 2,355 3,718 420.30 2,424 3,957 420.40 2,493 4,203 420.50 2,562 4,456 420.60 2,630 4,715 420.70 2,699 4,982 420.80 2,768 5,255 420.90 2,836 5,535 421.00 2,905 5,823 421.10 2,986 6,117 421.20 3,066 6,420 421.30 3,147 6,730 421.40 3,227 7,049 421.50 3,308 7,376 421.60 3,389 7,711 421.70 3,469 8,053 421.80 3,550 8,404 421.90 3,630 8,763 422.00 3,711 9,131 422.10 3,799 9,506 422.20 3,887 9,890 422.30 3,975 10,283 422.40 4,063 10,685 422.50 4,151 11,096 422.60 4,238 11,515 422.70 4,326 11,944 422.80 4,414 12,381 422.90 4,502 12,826 423.00 4,590 13,281 423.10 4,684 13,745 Elevation Surface Storage (feet) (sq-ft) (cubic -feet) 423.20 4,777 14,218 423.30 4,871 14,700 423.40 4,964 15,192 423.50 5,058 15,693 423.60 5,152 16,203 423.70 5,245 16,723 423.80 5,339 17,253 423.90 5,432 17,791 424.00 5,526 18,339 424.10 5,622 18,896 424.20 5,657 19,460 424.30 5,692 20,028 424.40 5,726 20,599 424.50 5,761 21,173 424.60 5,796 21,751 424.70 5,831 22,332 424.80 5,865 22,917 424.90 5,900 23,505 425.00 5,935 24,097 425.10 5,978 24,693 425.20 6,022 25,293 425.30 6,065 25,897 425.40 6,108 26,506 425.50 6,152 27,119 425.60 6,195 27,736 425.70 6,238 28,358 425.80 6,281 28,984 425.90 6,325 29,614 426.00 6,368 30,249 426.10 6,381 30,886 426.20 6,393 31,525 426.30 6,406 32,165 426.40 6,418 32,806 426.50 6,431 33,448 Printed 5/28/2021 2021-05-27 Full Routing Prepared by Timmons Gro Type/1 24-hr 100-YR Rainfall=9.16" Printed 5/28/2021 Summary for Link 13L: POST Combined Inflow Area = 16.300 ac, 55.03% Impervious, Inflow Depth > 5.81" for 100-YR event Inflow = 178.03 cfs @ 11.98 hrs, Volume= 7.887 of Primary = 178.03 cfs @ 11.98 hrs, Volume= 7.887 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Link 13L: POST Combined Hydrograph ■ Inflow ❑ Primary Time (hours) 2021-05-27 Full Routing Prepared by Timmons Gro Type II 24-hr 100-YR Rainfall=9.16" Hydrograph for Link 13L: POST Combined Time Inflow Elevation Primary (hours) (cfs) (feet) (cfs) 5.00 0.00 0.00 0.00 5.25 0.05 0.00 0.05 5.50 0.10 0.00 0.10 5.75 0.16 0.00 0.16 6.00 0.21 0.00 0.21 6.25 0.25 0.00 0.25 6.50 0.28 0.00 0.28 6.75 0.31 0.00 0.31 7.00 0.34 0.00 0.34 7.25 0.37 0.00 0.37 7.50 0.40 0.00 0.40 7.75 0.44 0.00 0.44 8.00 0.47 0.00 0.47 8.25 0.51 0.00 0.51 8.50 0.55 0.00 0.55 8.75 0.61 0.00 0.61 9.00 0.66 0.00 0.66 9.25 0.72 0.00 0.72 9.50 0.77 0.00 0.77 9.75 0.82 0.00 0.82 10.00 0.89 0.00 0.89 10.25 0.96 0.00 0.96 10.50 1.05 0.00 1.05 10.75 1.15 0.00 1.15 11.00 1.27 0.00 1.27 11.25 5.59 0.00 5.59 11.50 7.43 0.00 7.43 11.75 47.07 0.00 47.07 12.00 172.81 0.00 172.81 12.25 26.00 0.00 26.00 12.50 16.29 0.00 16.29 12.75 11.38 0.00 11.38 13.00 9.53 0.00 9.53 13.25 8.14 0.00 8.14 13.50 7.18 0.00 7.18 13.75 6.33 0.00 6.33 14.00 5.64 0.00 5.64 14.25 5.14 0.00 5.14 14.50 4.88 0.00 4.88 14.75 4.64 0.00 4.64 15.00 4.40 0.00 4.40 15.25 4.15 0.00 4.15 15.50 3.91 0.00 3.91 15.75 3.67 0.00 3.67 16.00 3.45 0.00 3.45 16.25 3.26 0.00 3.26 16.50 3.16 0.00 3.16 16.75 3.07 0.00 3.07 17.00 3.02 0.00 3.02 17.25 2.97 0.00 2.97 17.50 2.92 0.00 2.92 17.75 2.86 0.00 2.86 Time Inflow Elevation Primary (hours) (cfs) (feet) (cfs) 18.00 2.81 0.00 2.81 18.25 2.76 0.00 2.76 18.50 2.71 0.00 2.71 18.75 2.66 0.00 2.66 19.00 2.60 0.00 2.60 19.25 2.54 0.00 2.54 19.50 2.48 0.00 2.48 19.75 2.43 0.00 2.43 20.00 2.37 0.00 2.37 Printed 5/28/2021 1S PRE Ons4 Area A 2S Pr Offsite Area B 3L PRE Combined Point of Analysis 2 Sub4 Reach Aon Llnk 14S POST Onsi a Area A 15S P0S Offsite Area B 16L � POST Combined Point of Analysis 2 2022-08-05 POA 2 Prepared by Timmons Group Area Listing (all nodes) Area CN Description (acres) (subcatchment-numbers) 2.100 61 >75% Grass cover, Good, HSG B (1S, 2S, 14S, 15S) 1.060 98 Paved parking, HSG B (1S, 2S, 15S) 2.560 60 Woods, Fair, HSG B (1S, 2S, 15S) 5.720 67 TOTAL AREA Printed 8/31/2022 2022-08-05 POA 2 Prepared by Timmons Group Soil Listing (all nodes) Area (acres) Soil Group Subcatchment Numbers 0.000 HSG A 5.720 HSG B 1S, 2S, 14S, 15S 0.000 HSG C 0.000 HSG D 0.000 Other 5.720 TOTAL AREA Printed 8/31/2022 2022-08-05 POA 2 Prepared by Timmons Group HSG-A (acres) HSG-B (acres) HSG-C (acres) 0.000 2.100 0.000 0.000 1.060 0.000 0.000 2.560 0.000 0.000 5.720 0.000 Printed 8/31/2022 Panes d Ground Covers (all nodes) HSG-D Other Total Ground Subcatchment (acres) (acres) (acres) Cover Numbers 0.000 0.000 2.100 >75% Grass cover, Good 1 S, 2S, 14S, 15S 0.000 0.000 1.060 Paved parking 1S, 2S, 15S 0.000 0.000 2.560 Woods, Fair 1S, 2S, 15S 0.000 0.000 5.720 TOTAL AREA 2022-08-05 POA 2 Type 11 24-hr 1-YR Rainfali=3.05" Prepared by Timmons Group Printed 8/31/2022 HydroCAD® 10.10-4a s/n 08663 02020 HydroCAD Software Solutions LLC Page 5 Time span=5.00-20.00 hrs, dt=0.05 hrs, 301 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment 1 S: PRE Onsite Area A Runoff Area=1.800ac 17.78%Impervious Runoff Depth>0.54" Tc=6.0 min CN=67 Runoff=1.75 cfs 0.080 of Subcatchment2S: Pre Offsite Area B Runoff Area=1.060 ac 34.91% Impervious Runoff Depth>0.80" Tc=6.0 min CN=73 Runoff=1.61 cfs 0.070 of Subcatchment 1 4S: POST Onsite Area A Runoff Area=1.800 ac 0.00% Impervious Runoff Depth>0.33" Tc=6.0 min CN=61 Runoff=0.91 cfs 0.049 of Subcatchmentl5S: POST Offsite Area B Runoff Area=1.060 ac 34.91% Impervious Runoff Depth>0.80" Tc=6.0 min CN=73 Runoff=1.61 cfs 0.070 of Link 3L: PRE Combined Point of Analysis 2 Inflow=3.35 cfs 0.151 of Primary=3.35 cfs 0.151 of Link 16L: POST Combined Point of Analysis 2 Inflow=2.49 cfs 0.120 of Primary=2.49 cfs 0.120 of Total Runoff Area = 5.720 ac Runoff Volume = 0.271 of Average Runoff Depth = 0.57" 81.47% Pervious = 4.660 ac 18.53% Impervious = 1.060 ac 2022-08-05 POA 2 Prepared by Timmons Group Type/1 24-hr 1-YR Rainfali=3.05" Summary for Subcatchment 1 S: PRE Onsite Area A Runoff = 1.75 cfs @ 11.99 hrs, Volume= 0.080 af, Depth> 0.54" Printed 8/31/2022 Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24-hr 1-YR Rainfall=3.05 Area (ac) CN Description 0.320 98 Paved parking, HSG B 0.240 61 >75% Grass cover, Good, HSG B 1.240 60 Woods, Fair, HSG B 1.800 67 Weighted Average 1.480 82.22% Pervious Area 0.320 17.78% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 1S: PRE Onsite Area A Hydrograph 1.75 cfs L Type II 24-hr Rainfal=3.05" Area=1.800 ac lume=0.080 offf RunoDepth>0.54" Tc=6.0 min CN=67 10 11 12 13 14 15 16 17 18 19 20 Time (hours) ❑ Runoff 2022-08-05 POA 2 Prepared by Timmons Group Type/1 24-hr 1-YR Rainfali=3.05" Summary for Subcatchment 2S: Pre Offsite Area B Runoff = 1.61 cfs @ 11.98 hrs, Volume= 0.070 af, Depth> 0.80" Printed 8/31/2022 Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24-hr 1-YR Rainfall=3.05 Area (ac) CN Description 0.370 98 Paved parking, HSG B 0.030 61 >75% Grass cover, Good, HSG B 0.660 60 Woods, Fair, HSG B 1.060 73 Weighted Average 0.690 65.09% Pervious Area 0.370 34.91 % Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 2S: Pre Offsite Area B Hydrograph 1.61 cfs Type II 24-hr 1-YR Rainfall=3.05" Runoff Area=1.060 ac Runoff Volume=0.070 of Runoff Depth>0.80" Tc=6'.0 min CN=73 10 11 12 13 14 15 16 17 18 19 20 Time (hours) ❑ Runoff 2022-08-05 POA 2 Prepared by Timmons Group Type/1 24-hr 1-YR Rainfali=3.05" Summary for Subcatchment 14S: POST Onsite Area A Runoff = 0.91 cfs @ 12.00 hrs, Volume= 0.049 af, Depth> 0.33" Printed 8/31/2022 Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24-hr 1-YR Rainfall=3.05 Area (ac) CN Description 0.000 98 Paved parking, HSG B 1.800 61 >75% Grass cover, Good, HSG B 0.000 60 Woods, Fair, HSG B 1.800 61 Weighted Average 1.800 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 14S: POST Onsite Area A Hydrograph 1 0.91 cfs Type II 24-hr 1-YR Rainfall=3.05" Runoff Area=1.800 ac Runoff Volume=0.049 of Runoff Depth>0.33" Tc=6'60 min CN=61 10 11 12 13 14 15 16 17 18 19 Time (hours) ❑ Runoff 2022-08-05 POA 2 Prepared by Timmons Group Type/1 24-hr 1-YR Rainfali=3.05" Summary for Subcatchment 15S: POST Offsite Area B Runoff = 1.61 cfs @ 11.98 hrs, Volume= 0.070 af, Depth> 0.80" Printed 8/31/2022 Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24-hr 1-YR Rainfall=3.05 Area (ac) CN Description 0.370 98 Paved parking, HSG B 0.030 61 >75% Grass cover, Good, HSG B 0.660 60 Woods, Fair, HSG B 1.060 73 Weighted Average 0.690 65.09% Pervious Area 0.370 34.91 % Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 15S: POST Offsite Area B Hydrograph 1.61 cfs Type II 24-hr 1-YR Rainfall=3.05" Runoff Area=1.060 ac Runoff Volume=0.070 of Runoff Depth>0.80" Tc=6'.0 min CN=73 10 11 12 13 14 15 16 17 18 19 20 Time (hours) ❑ Runoff 2022-08-05 POA 2 Prepared by Timmons Group Type/1 24-hr 1-YR Rainfali=3.05" Printed 8/31/2022 Summary for Link 3L: PRE Combined Point of Analysis 2 Inflow Area = 2.860 ac, 24.13% Impervious, Inflow Depth > 0.63" for 1-YR event Inflow = 3.35 cfs @ 11.99 hrs, Volume= 0.151 of Primary = 3.35 cfs @ 11.99 hrs, Volume= 0.151 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Link 3L: PRE Combined Point of Analysis 2 Hydrograph ❑ Inflow ❑ Primary 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Time (hours) 2022-08-05 POA 2 Prepared by Timmons Group Type/1 24-hr 1-YR Rainfali=3.05" Printed 8/31/2022 Summary for Link 16L: POST Combined Point of Analysis 2 Inflow Area = 2.860 ac, 12.94% Impervious, Inflow Depth > 0.50" for 1-YR event Inflow = 2.49 cfs @ 11.99 hrs, Volume= 0.120 of Primary = 2.49 cfs @ 11.99 hrs, Volume= 0.120 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Link 16L: POST Combined Point of Analysis 2 ■ Inflow Primary 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Time (hours) 2022-08-05 POA 2 Type // 24-hr 10-YR Rainfali=5.58" Prepared by Timmons Group Printed 8/31/2022 HydroCAD® 10.10-4a s/n 08663 02020 HydroCAD Software Solutions LLC Page 12 Time span=5.00-20.00 hrs, dt=0.05 hrs, 301 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment 1 S: PRE Onsite Area A Runoff Area=1.800ac 17.78%Impervious Runoff Depth>2.02" Tc=6.0 min CN=67 Runoff=6.95 cfs 0.303 of Subcatchment2S: Pre Offsite Area B Runoff Area=1.060 ac 34.91% Impervious Runoff Depth>2.52" Tc=6.0 min CN=73 Runoff=5.01 cfs 0.223 of Subcatchment 1 4S: POST Onsite Area A Runoff Area=1.800 ac 0.00% Impervious Runoff Depth>1.56" Tc=6.0 min CN=61 Runoff=5.35 cfs 0.234 of Subcatchmentl5S: POST Offsite Area B Runoff Area=1.060 ac 34.91% Impervious Runoff Depth>2.52" Tc=6.0 min CN=73 Runoff=5.01 cfs 0.223 of Link 3L: PRE Combined Point of Analysis 2 Inflow=12.00 cfs 0.526 of Primary=12.00 cfs 0.526 of Link 16L: POST Combined Point of Analysis 2 Inflow=10.39 cfs 0.457 of Primary=10.39 cfs 0.457 of Total Runoff Area = 5.720 ac Runoff Volume = 0.982 of Average Runoff Depth = 2.06" 81.47% Pervious = 4.660 ac 18.53% Impervious = 1.060 ac 2022-08-05 POA 2 Prepared by Timmons Group Type // 24-hr 10-YR Rainfali=5.58" Summary for Subcatchment 1 S: PRE Onsite Area A Runoff = 6.95 cfs @ 11.98 hrs, Volume= 0.303 af, Depth> 2.02" Printed 8/31/2022 Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24-hr 10-YR Rainfall=5.58" Area (ac) CN Description 0.320 98 Paved parking, HSG B 0.240 61 >75% Grass cover, Good, HSG B 1.240 60 Woods, Fair, HSG B 1.800 67 Weighted Average 1.480 82.22% Pervious Area 0.320 17.78% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 1S: PRE Onsite Area A Hydrograph 6.95 cfS ❑ Runo 7 Type II 24-hr 6 LR 0-YR Rainfall=5.58" noff Area__=_1,800_ac 5 off Volume=0.!303 of " Runoff Depth>2.02 4Tc=6.0 min 3 PN=,67 2 I I I I I 10 11 12 13 14 15 16 17 18 19 20 Time (hours) 2022-08-05 POA 2 Prepared by Timmons Group Type // 24-hr 10-YR Rainfali=5.58" Summary for Subcatchment 2S: Pre Offsite Area B Runoff = 5.01 cfs @ 11.97 hrs, Volume= 0.223 af, Depth> 2.52" Printed 8/31/2022 Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24-hr 10-YR Rainfall=5.58" Area (ac) CN Description 0.370 98 Paved parking, HSG B 0.030 61 >75% Grass cover, Good, HSG B 0.660 60 Woods, Fair, HSG B 1.060 73 Weighted Average 0.690 65.09% Pervious Area 0.370 34.91 % Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 2S: Pre Offsite Area B Hydrograph 5.01 cfs ❑ Runof 5- Type II 24-hr 10-YR Rainfall=5.58" 4 Runoff Area=1.060 ac Runoff Volume=0.223 of 3 Runoff Depth>2.52" Tc=6.0 min 2 --CN=73-- 11 12 13 14 15 16 17 18 19 Time (hours) 2022-08-05 POA 2 Prepared by Timmons Group Type // 24-hr 10-YR Rainfali=5.58" Summary for Subcatchment 14S: POST Onsite Area A Runoff = 5.35 cfs @ 11.98 hrs, Volume= 0.234 af, Depth> 1.56" Printed 8/31/2022 Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24-hr 10-YR Rainfall=5.58" Area (ac) CN Description 0.000 98 Paved parking, HSG B 1.800 61 >75% Grass cover, Good, HSG B 0.000 60 Woods, Fair, HSG B 1.800 61 Weighted Average 1.800 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 14S: POST Onsite Area A Hydrograph �� � ❑Runoff 5.35 cfs Type II 24-hr 5- LL3 10-YrR R-a-i-n-Ir fall='5.58r Runoff Area=1.800 ac 4 ,Runoff Volume=0.234 of >1.56"unoff Depth 3 Tc=6.0 min (,N=61 _ 2 I I I I I I I I I I I I I I I I I I 1 I I I I I I 10 11 12 13 14 15 16 17 Time (hours) 2022-08-05 POA 2 Prepared by Timmons Group Type // 24-hr 10-YR Rainfali=5.58" Summary for Subcatchment 15S: POST Offsite Area B Runoff = 5.01 cfs @ 11.97 hrs, Volume= 0.223 af, Depth> 2.52" Printed 8/31/2022 Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24-hr 10-YR Rainfall=5.58" Area (ac) CN Description 0.370 98 Paved parking, HSG B 0.030 61 >75% Grass cover, Good, HSG B 0.660 60 Woods, Fair, HSG B 1.060 73 Weighted Average 0.690 65.09% Pervious Area 0.370 34.91 % Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 15S: POST Offsite Area B Hydrograph 5.01 cfs ❑ Runof 5- Type II 24-hr 10-YR Rainfall=5.58" 4 Runoff Area=1.060 ac Runoff Volume=0.223 of 3 Runoff Depth>2.52" Tc=6.0 min 2 --CN=73-- 11 12 13 14 15 16 17 18 19 Time (hours) 2022-08-05 POA 2 Prepared by Timmons Group Type // 24-hr 10-YR Rainfali=5.58" Printed 8/31/2022 Summary for Link 3L: PRE Combined Point of Analysis 2 Inflow Area = 2.860 ac, 24.13% Impervious, Inflow Depth > 2.21" for 10-YR event Inflow = 12.00 cfs @ 11.98 hrs, Volume= 0.526 of Primary = 12.00 cfs @ 11.98 hrs, Volume= 0.526 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Link 3L: PRE Combined Point of Analysis 2 Hydrograph E 5nflow ❑ Primary 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Time (hours) 2022-08-05 POA 2 Prepared by Timmons Group Type // 24-hr 10-YR Rainfali=5.58" Printed 8/31/2022 Summary for Link 16L: POST Combined Point of Analysis 2 Inflow Area = 2.860 ac, 12.94% Impervious, Inflow Depth > 1.92" for 10-YR event Inflow = 10.39 cfs @ 11.98 hrs, Volume= 0.457 of Primary = 10.39 cfs @ 11.98 hrs, Volume= 0.457 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Link 16L: POST Combined Point of Analysis 2 ( 11 - I I -- ----I- 10.39 c I I 10 I I I I / / I I I I I I I I I I 8 / I I I I I I I I I I I I 7 / / / I I I I I V I I I I I 0 / I I I I I I I I I I I I I I I I I I I I 9 7____I____r_- I I I I I / / I I I I I I ■Inflow Inflow Area-=Primary 2.860 ac I___I____I___ i____ I I I I I I I I I I I I I I I I I I I I I I I I I I I I _l _I _T _I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Time (hours)