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WPO201900062 Calculations 2020-10-26
Southwood Redevelopment — Village 1 ALBEMARLE COUNTY, VIRGINIA ROAD PLAN, WPO PLAN, & PRELIMINARY SUBDIVISION PLAT DESIGN CALCULATIONS & NARRATIVE OCTOBER 30, 2019 REVISED: APRIL 6, 2020 REVISED: JUNE 49 2020 REVISED: SEPTEM13ER 10, 2020 REVISED: OCTOBER 26, 2020 TIMMONS GROUP YOUR VISION ACHIEVED THROUGH OURS. Prepared by: Clint Shifflett, PE Timmons Group 608 Preston Avenue, Suite 200 Charlottesville, VA 22903 434.327.1690 CLINT W. 15t S FFLET > Lie. N . $ 4330 4, 10/26/2020 .a: 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 8. Bioretention Routing Calculations 9. Storage Pipe Routing Calculations Project Narrative: This project includes the construction three roads, a residential community, and associated utilities and landscaping. The limits of disturbance is 15.68 acres. Water Ouality: The current site is undeveloped. 22.68 acres was analyzed for water quality, including 15.70 acres of disturbed area. The total TT` load reduction required is 9.12 lbs/year. There will be 5.55 lbs/year to be treated via Bioretention 1, and 2.25 lbs/year to be treated via Bioretention 2. The remaining 1.32 lbs/yr of required nutrient credits area shall be purchased from a DEQ-Approved Nutrient Credit Bank in Accordance with VA code 62.1-44.15:35. Water Ouantity 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 underground storage pipe. 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. Note that all storm drain, stormwater quality, and stormwater quantity calculations include a total of 1.10 Ac additional impervious area (not shown on plans) in Lots 1, 2, 6, 7, 24, 33, 35, 36 and 39 for future development. FORM LD 204 STORMWATER INLET COMPUTATIONS SHEET 1 OF 9 ROUTE PROJECT SouthwoodVillagel DESIGNER: CG CHECKED: DATE 10/26/2020 UNITS:NGLISH INLET o d � U o� m� �� .� 3^ � � w �' ❑� f✓'�- � w �.. �.. o� � Sag Inlets Only w Z w z o'r" ai �iw Z m y ®^ 106 D1-3B 6 000 0.045 0.90 00405 WRIGHT 0.015 0.25 0.0038 0.044 4 0.176 0 0.176 0.0250 0.0208 1.270 2.000 1.5748 0.0833 4.0048 1.000 3.50 0.1458 0.1666 3.483 6.000 1.723 1.000 0.176 0.000 1.269 108 DI-2B 10 0.037 0.90 0.0333 WRIGHT 0.017 0.25 0.0043 0.038 4 0.152 0 0.152 0.0200 0.0208 1.253 2.000 1.5962 0.0833 4.0048 1.000 3.50 0.1458 0.1666 3.063 6.000 3.265 1.000 0.152 0.000 1.253 110 DI-2B 10 0.024 0.90 0.0216 WRIGHT 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 L000 0.092 0.000 0.876 112 DI-313 6.000 0.147 0.90 0.1323 ORIGHT 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 1.731 114 DI-3B 6.000 0.058 0.90 0.0522 WRIGHT 0.026 0.25 0.0065 0.059 4 0.236 0 0.236 0.0450 0.0208 1.270 2.000 1.5748 0.0833 4.0048 1.000 3.50 0.1458 0.1666 4.699 6.000 1.277 1.000 0.236 0.000 1.269 116 DI-311 6.000 0.098 0.90 0.0882 ORIGHT 0.029 0.25 0.0073 0.095 4 0.38 0 0.380 0.4000 0.0208 1.008 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 1.008 132 DI-2B 8 0.076 0.90 0.0684 0.00 RIGH 0.021 0.25 0.0053 0.074 4 0296 0 0.296 0.0100 0.0208 L832 2.000 1,0917 0.0833 4.0048 1.000 3.50 0.1458 0.1666 3.291 6.000 2.431 L000 0.296 0.000 1.831 134 D1-2A 2 0.132 0.90 0.1188 WRIGHT 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 L980 136 DI-2B 10 0.060 0.90 0.054 WRIGHT 0.025 0.25 0.0063 0.06 4 0.24 0 0.240 0.0289 0.0208 1.388 2.000 1A409 0.0833 4.0048 1.000 3.50 0.1458 0.1666 4.144 6.000 2.413 L000 0.240 0.000 1.387 INLETSOFT BY ENSOFTEC DATE: 10/26/2020 FORM LD 204 STORMWATER INLET COMPUTATIONS SHEET 2 OF 9 ROUTE PROJECT SouthwoodVillagel DESIGNER: CG CHECKED: DATE 10/26/2020 UNITS:NGLISH ®--__-- ---_---�--__-- ---_---®--__-- ---_---�--__-- ---_---�--__-- ---_--- 1 1 • ��O 1 .1 1 1 11 1 1 1 : ® 111 � 1 1 : � 11 � : 111 ���® . 111 ®� 1 .1 1 111 �--__-- ®--__-- INLETSOFT BY ENSOFTEC DATE: 10/26/2020 FORM LD 204 STORMWATER INLET COMPUTATIONS SHEET 3 OF 9 ROUTE PROJECT SouthwoodVillagel DESIGNER: CG CHECKED: DATE 10/26/2020 UNITS:NGLISH INLET f= V •� U 4 -. U w: K U U y 0 K E; u ,� r3 y .$ .� U v, U Sag Inlets Only x `o c - i ..7 �F O'RIGHT 0018 025 00045 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 I50 DI-3B 6.000 0.104 0.90 0.0936 0.000'RIGH 0.064 0.25 0.016 0.11 4 0.44 0 0.440 0.0100 0.0208 2.494 2.000 0.8019 0.0833 4.0048 1 0.998 3.50 0.1458 0.1663 3.892 6.000 1.542 1.000 0.440 0.000 2.123 152 DI-3B 6.000 0.099 0.90 0.0891 WRIGHT 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-26 70 0.077 0.90 0.0693 WRIGHT 0.028 0.25 0.007 0.076 4 0.304 0 0.304 0.0500 0.0208 1.369 2.000 1.4609 0.0833 4.0048 1.000 3.50 0.1458 0.1666 5.394 66.000 12.977 1.000 0.304 0.000 1.368 154A D1-3B 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 &000 1.977 1.000 0.244 0000 1.703 154E DI-2B 8 0.057 0.90 0.0513 O'RIGHT 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 &000 2.712 1.000 0.228 0.000 1.660 156 DI-311 6.000 0.078 0.90 0.0702 0.000'RIGH 0.029 0.25 0.0073 0.077 4 0.308 0 0.308 0.0500 0.0208 1.375 2.000 1.4545 0.0833 4.0048 1.000 3.50 0.1458 0.1666 5.424 6.000 1.106 1.000 0.308 0.000 1.375 158 DI-2B 10 0.097 0.90 0.0873 WRIGHT 0.031 0.25 0.0078 0.095 4 0.38 1 0 0.380 0.0500 0.0208 1.488 2.000 1 1.3441 0.0833 1 4.0048 1 1.000 3.50 0.1458 0.1666 5.924 6.000 1.688 1.000 0.380 0.000 1.487 160 DI-3B 6.000 0.101 0.90 0.0909 0.000'RIGH 0.035 0.25 0.0088 0.1 4 0.4 0 0.400 0.0500 0.0208 1.517 2.000 1.3184 0.0833 4.0048 1.000 3.50 0.1458 0.1666 6.053 &000 0.991 1.000 0.400 0.000 L516 162 DI-2B 8 0.060 0.90 0.054 INLETSOFT BY ENSOFTEC DATE: 10/26/2020 FORM LD 204 STORMWATER INLET COMPUTATIONS SHEET 4 OF 9 ROUTE PROJECT SouthwoodVillagel DESIGNER: CG CHECKED: DATE 10/26/2020 UNITS:NGLISH INLET f= V •� U 4 4 -. U w: K U U y 0 K E; u ,� r3 y .$ .� U v, U CV 0 Sag Inlets Only K x G& `o c 2O - i ..7 O �F F 0 000'RIGH 0 020 025 0 005 0.059 4 0.236 0 0.236 0.0100 0.0208 1.683 2.000 1.1884 0.0833 4.0048 1.000 3.50 0.1458 0.1666 2.993 6.000 2.673 1.000 0.236 0.000 L682 164 D1-3B 6.000 0.076 0.90 0.0684 0.000'RIGH 0.019 0.25 0.0048 0.073 4 0 292 0 0.292 0.0390 0.0200 1.412 2.000 1.4164 0.0833 4.165 1 1.000 3.52 0.1466 0.1666 4.923 6.000 1.219 1.000 0.292 0.000 1.412 166 DI-3B 6.000 0.016 0.90 0.0144 0.000'RIGH 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 DI-2B 8 0.014 0.90 0.0126 0.000'RIGH 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 1.000 0.052 0.000 0.954 170 DI-2B 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 0.171 0.90 0.1539 WRIGHT 0.067 0.25 0.0168 0.171 4 0.684 0 0.684 0.0131 0.0200 3.516 2.000 0.5688 0.0833 4.165 0.972 3.52 0.1466 0.1626 5.149 6.000 1.165 1.000 0.684 0.000 2.363 202A D1-213 8 0.052 0.90 0.0468 0.000'RIGH 0.018 0.25 0.0045 0.051 4 0.204 0 0,204 0.0100 0.0208 1.593 2.000 1.2555 0.0833 4.0048 1.000 3.50 0.1458 0.1666 2.815 6.000 2.842 1.000 0.204 0.000 1.593 204 DI-2B 10 0.052 0.90 0.0468 WRIGHT 0.020 0.25 0.005 0.052 4 0208 0 0.208 0.0250 0.0208 1.352 2.000 1.4793 0.0833 4.0048 1.000 3.50 0.1458 0.1666 3.736 6.000 2.677 1.000 0.208 0.000 1.351 206 DI-3B 6.000 0.095 0.90 0.0855 WRIGHT 0.030 0.25 0.0075 0.093 4 0.372 0 0.372 0.0250 0.0208 1.681 2.000 1.1898 0.0833 4.0048 1.000 3.50 0.1458 0.1666 4.769 6.000 1.258 1.000 0.372 0.000 1,680 208 DI-26 10 0.110 0.90 0.099 INLETSOFT BY ENSOFTEC DATE: 10/26/2020 FORM LD 204 STORMWATER INLET COMPUTATIONS SHEET 5 OF 9 ROUTE PROJECT SouthwoodVillagel DESIGNER: CG CHECKED: DATE 10/26/2020 UNITS:NGLISH INLET o f= wd V •� U 4 -. U w: o� K U m� U � 'i�, y 0 3E K E; z� � `a' u ,� r3 y �,'.., .$ 6(✓ r- .� �'+ �.. U v, o� U �^ Sag Inlets Only Nd w w x v� �iw `o c - ^^ i ..7 ®�' �F O'RIGHT 0 031 025 00078 0.107 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 D1-3B 6.000 0.130 0.90 0.117 VRIGHT 0.064 0.25 0.016 0.133 4 0.532 0 0.532 0.0100 0.0208 3.091 2.000 0.647 0.0833 4.0048 1 0.986 1 3.50 0.1458 0.1646 4.241 6.000 1.415 1.000 0.532 0.000 2.271 208E D1-2B 8 0.049 0.90 0.0441 WRIGHT 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 L557 210 DI-36 6.000 0.059 0.90 0.0531 WRIGHT 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 D1-3B 6.000 0.017 0.90 0.0153 O'RIGHT 0.045 0.25 0.0113 0.027 4 0. 108 0 0.108 0.0100 0.0208 1.256 2.000 1.5924 0.0833 4.0048 1.000 3.50 0.1458 0.1666 2.155 6.000 2.784 1.000 0.108 0 000 1.255 210E D1-3B 2.000 0.024 0.90 0.0216 WRIGHT 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-311 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 DI-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 1.324 2.000 1.5106 0.0833 4.0048 1.000 3.50 0.1458 0.1666 3.257 2.000 0.614 0.820 0.144 0.032 1.323 216 DI-3B 6.000 0.092 0.90 0.0828 WRIGHT 0.025 0.25 0.0063 0.089 4 0.356 0 0.356 0.0200 0.0208 1.724 2.000 1.1601 0.0833 4.0048 1.000 3.50 0.1458 0.1666 4.379 6.000 1.370 1.000 0.356 0.000 1,723 218 DI-1 1.000 0.071 0.90 0.0639 INLETSOFT BY ENSOFTEC DATE: 10/26/2020 FORM LD 204 STORMWATER INLET COMPUTATIONS SHEET 6 OF 9 ROUTE PROJECT SouthwoodVillagel DESIGNER: CG CHECKED: DATE 10/26/2020 UNITS:NGLISH INLET o d � U o� m� �� .� 3^ � � �' f✓'�- � �.. a o� $ � o Sag Inlets Only w w o'r" a �iw xo m a ®^ F 0 000'RIGH 0 083 025 00208 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 VRIGHT 0.012 0.25 0.003 0.057 4 0 228 0 0.228 0.0200 0.0208 1.459 2.000 1.3708 0.0833 4.0048 1.000 3.50 0.1458 0.1666 3.631 6.000 1.652 1.000 0.228 0.000 1.458 222 DI-2B 10 0.039 0.90 0.0351 VRIGHT 0.015 0.25 0.0038 0.039 4 0.156 0 0.156 0.0300 0.0208 L173 2.000 1.705 0.0833 4.0048 1.000 3.50 0.1458 0.1666 3.497 6.000 2.860 L000 0.156 0.000 1.172 224 DI-2B 8 0.032 0.90 0.0288 WRIGHT 0.027 0.25 0.0068 0.036 4 0.144 0 0.144 0.0100 0.0208 1.398 2.000 1.4306 0.0833 4.0048 1.000 3.50 0.1458 0.1666 2.432 6.000 3.289 1.000 0.144 0.000 1.398 224A D1-3B 6.000 0.130 0.90 0.117 VRIGHT 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 D1-3B 6.000 0.127 0.90 0.1143 WRIGHT 0.131 0.25 0.0328 0.147 4 0.588 0 0.588 0.0100 0.0208 3409 2.000 0.5867 0.0833 4.0048 0.975 3.50 0.1458 0.1630 4.449 6.000 L349 L000 0.588 0.000 2.351 226 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 L521 226A D1-2B 10 0.133 0.90 0.1197 O'RIGHT 0.070 0.25 0.0175 0.137 4 0.548 0 0.548 0.0389 0.0208 1.789 2.000 1.1179 0.0833 4.0048 1.000 3.50 0.1458 0.1666 6.408 6.000 1.561 1.000 0.548 0000 1.788 228 DI-2B 6 0.046 0.90 0.0414 VRIGHT 0.011 0.25 0.0028 0.044 4 0.176 0 0.176 0.0100 0.0208 1.507 2.000 1.3271 0.0833 4.0048 1.000 3.50 0.1458 0.1666 2.646 4.000 2.268 1.000 0.176 0.000 1.507 INLETSOFT BY ENSOFTEC DATE: 10/26/2020 FORM LD 204 STORMWATER INLET COMPUTATIONS SHEET 7 OF 9 ROUTE PROJECT SouthwoodVillagel DESIGNER: CG CHECKED: DATE 10/26/2020 UNITS:NGLISH ---_---���� 1 ::1 11 11 11 1: ® 111 � 11: � 11�: 1 •1 ���� . 111 � 111 1 ::1 1111 �--__-- ---_--- 1 1 �®O 1 1 11 11 11 1: � 111 � 11: � 11�: 1 • 1 ���� . 111 ®� 1 1 1111 �--__-- INLETSOFT BY ENSOFTEC DATE: 10/26/2020 FORM LD 204 STORMWATER INLET COMPUTATIONS SHEET 8 OF 9 ROUTE PROJECT SouthwoodVillagel DESIGNER: CG CHECKED: DATE 10/26/2020 UNITS:NGLISH �_-__-- ---_---�--__-- ---_---�--__-- ---_--- 11 • ���� 11 11 11 1: � 111 � 11: � 11�: 111 ���� . 111 � 111 � 1111 �--__-- INLETSOFT BY ENSOFTEC DATE: 10/26/2020 FORM LD 204 STORMWATER INLET COMPUTATIONS SHEET 9 OF 9 ROUTE PROJECT SouthwoodVillagel DESIGNER: CG CHECKED: DATE 10/26/2020 UNITS:NGLISH INLET Z`d N z U V w ❑� w CU �.. a" Sag Inlets Only z ai Z y F 416A D1-3B 6 000 0 009 0.90 00081 O'RIGHT 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 L000 3.50 0.1458 0.1666 L359 6.000 4.415 1.000 0.036 0.000 0.832 418 DI-311 6.000 0.063 0.90 0.0567 O'RIGHT 0.016 1 0.25 0.004 0.015 0.20 0.003 0.064 4 0256 0 0.256 0.0496 0.0208 1.285 2.000 1.5564 0.0833 4.0048 1.000 3.50 0.1458 0.1666 5.007 6.000 1.198 1.000 0.256 0.000 1,285 420 DI-314 6.000 0.066 0.90 0.0594 WRIGHT 0.041 0.25 0.0103 0.07 4 0.28 0 0.280 0.0400 0.0208 L384 2.000 L4451 0.0833 4.0048 L000 3.50 0.1458 0.1666 4.874 6.000 L231 L000 0.280 0.000 L383 506 DI-314 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 L000 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 Back/Lt. 0.000'RIGH 0.016 0.25 0.004 Back/Lt. 0.061 4 0.244 0 Back/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. L024 0.0131 6 1.024 1.547 0.160 0.333 0A8048 3.547 6.448 Weir Flow 600 DI-1 2.000 2.327 0.25 0.5818 Back/Lt. 0.000'11IG1Y 0.020 0.20 0.004 Back/Lt. 0.586 4 2.344 0 0.0100 0.3333 1.670 2.000 L1976 0.3333 1 200 Back/Lt. 0 4 0 0 Ahead/Rt. 2.344 0.0100 2.000 2 2.344 3.481 2.666 5.481 0.870 Weir Flow INLETSOFT BY ENSOFTEC DATE: 10/26/2020 LD-229 STORM SEWER DESIGN COMPUTATIONS STORM FREQUENCY 0 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 COEFF. "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/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) Lateral7CF CFS 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 -LAT1D Minutes (17) REFERENCE (l) STA. REFERENCE (2) STA. 101 102 100 0.00 0.00 0.40 6.24 4.74 34.62 71.49 409.56 409.00 37.07 0.01511 36 Circular 1 88.82 0.01020 2.04 5.12 0.88 13.98 5.07 0.04 6.28 103 104 102 0.00 0.00 0.40 6.12 6.20 0.00 36.87 410.71 409.66 80.72 0.01301 30 Circular 1 50.68 0.00720 1.58 3.27 0.71 11.26 3.55 0.12 6.24 105 106 104 0.06 0.73 0.04 0.40 6.06 6.21 0.00 36.87 420.74 418.30 60.96 0.04003 30 Circular 1 88.90 0.00720 1.12 2.14 0.58 17.27 5.75 0.06 6.12 107 108 1106 0.05 0.70 0.04 0.36 5.98 6.24 0.00 36.60 422.80 421.02 71.00 0.02507 30 Circular 1 70.36 0.00700 1.28 2.53 0.63 14.47 4.53 0.08 6.06 109 110 108 0.03 0.74 0.02 0.32 5.80 6.29 0.00 2.06 432.21 428.05 92.51 0.04497 15 Circular 1 14.84 0.00090 0.31 0.24 0.18 8.51 1.44 0.18 5.98 111 112 110 0.18 0.77 0.14 0.30 5.44 6.40 0.00 1.91 441.66 432.31 186.89 0.05003 15 Circular 1 15.65 0.00080 0.30 0.22 0.17 8.65 1.46 0.36 5.80 113 114 112 0.08 0.70 0.06 0.15 5.21 6.47 0.00 1.00 445.92 441.76 92.44 0.04500 15 Circular 1 14.85 0.00020 0.22 0.15 0.13 6.90 0.96 0.22 5.44 115 116 114 0.13 0.75 0.10 0.10 5.00 6.54 0.00 0.62 449.46 446.02 76.55 0.04494 15 Circular 1 14.84 0.00010 0.17 0.10 0.11 5.98 0.73 0.21 5.21 119 120 108 0.00 0.00 0.00 1 5.00 0.00 34.62 424.43 422.90 61.43 0.02491 24 Circular 1 1 38.68 0.020801 1.48 2.49 0.60 13.92 4.49 1 0.07 5.07 121A 1104A 104 0.00 1 0.00 0.00 5.00 0.00 0.00 34.54 411.06 410.81 1 25.49 0.009811 30 Circular 1 44.01 0.00630 1.67 3.48 0.73 9.93 3.20 0.04 5.04 121B 122 1104A 0.00 0.00 0.00 5.00 0.00 36.07 413.20 413.10 9.96 0.01004 30 Circular 1 44.52 0.00680 1.71 3.57 0.73 10.10 3.29 0.02 5.02 127 128 126 0.00 0.00 4.10 8.83 4.22 0.00 23.03 417.16 416.20 15.98 0.06008 30 Circular 1 108.92 0.00280 0.78 1.31 0.44 17.60 5.59 0.02 8.84 129 130 128 0.00 0.00 4.10 8.78 5.52 0.00 23.03 428.11 424.71 56.67 0.06000 30 Circular 1 108.84 0.00280 0.78 1.31 0.44 17.59 5.59 0.05 8.83 131 132 130 0.10 0.76 0.07 4.10 8.73 5.53 0.00 23.03 436.84 436.36 31.93 0.01503 30 Circular 1 54.48 0.00280 1.13 2.17 0.59 10.63 2.89 0.05 8.78 133 134 132 0.28 0.56 0.16 0.16 5.00 6.54 0.00 1.01 437.91 437.27 31.78 0.02014 15 Circular 1 9.93 0.00020 0.27 0.20 0.16 5.21 0.69 0.10 5.10 135 136 136A 0.09 0.71 0.06 3.84 8.52 5.58 0.00 21.63 438.96 437.97 66.11 0.01498 30 Circular 1 1 54.39 10.002501 1.10 2.07 0.57 10.45 2.79 0.11 8.63 135A 1136A 132 0.05 1 0.65 0.03 3.88 8.63 4.25 0.00 21.76 437.87 436.94 1 62.28 0.014931 30 Circular 1 54.30 10.002501 1.10 2.08 0.57 10.45 2.80 0.10 8.73 137 138 1136 0.04 1 0.74 0.03 1.56 5.30 6.45 0.00 10.20 439.32 439.06 34.16 0.00761 24 Circular 1 21.38 0.00180 0.97 1.52 0.49 6.73 1.68 0.09 5.38 139 140 138 0.75 0.41 0.31 1.53 5.10 6.51 0.00 9.99 440.02 439.42 79.43 0.00755 24 Circular 1 21.30 0.00170 0.96 1.50 0.49 6.67 1.66 0.20 5.30 141 142 140 2.87 0.43 1.22 1.22 5.00 6.54 0.00 7.99 442.32 440.40 63.87 0.03006 15 Circular 1 12.13 0.01360 0.74 0.76 0.35 10.56 2.47 0.10 5.10 143 144 136 0.09 0.77 0.07 2.04 8.06 5.69 0.00 11.81 443.49 440.91 171.99 0.01500 24 Circular 1 30.02 0.00240 0.87 1.32 0.46 8.98 2.13 0.32 8.38 143A 144A 144B 0.13 0.72 0.09 0.09 5.00 5.04 0.00 0.46 443.64 443.31 32.70 0.01009 15 Circular 1 7.03 0.00000 0.22 0.14 0.13 3.23 0.38 0.17 5.17 143B 144B 136 0.13 0.72 0.09 2.22 8.38 4.30 0.00 12.59 440.81 439.64 78.15 0.01497 24 Circular 1 29.99 0.00270 0.90 1.38 0.47 9.13 2.20 0.14 8.52 145 1146 144 0.19 0.78 0.15 0.15 5.00 6.54 0.00 0.95 448.73 447.97 37.79 0.020111 15 Circular I 1 9.92 0.000201 0.26 0.19 0.16 5.11 0.67 0.12 5.12 147 148 144 0.07 0.74 0.05 1.83 7.77 5.75 0.00 10.60 444.88 443.59 128.94 0.01000 24 Circular 1 24.51 0.00190 0.92 1.41 0.47 7.52 1.80 0.29 8.06 149 150 1148 0.17 0.66 0.11 1.77 7.59 5.80 0.00 10.29 454.32 452.38 101.95 0.019031 24 Circular 1 33.81 0.00180 0.76 1.09 0.41 9.44 2.14 0.18 7.77 151 152 150 0.13 0.74 0.10 0.10 5.00 6.54 0.00 0.64 454.82 454.42 40.05 0.00999 15 Circular 1 7.00 0.00010 0.25 0.18 0.15 3.55 0.45 0.19 5.19 153 154C 150 0.00 0.00 1.45 7.18 4.53 0.00 8.38 461.46 460.33 45.25 0.02497 18 Circular 1 17.98 0.00570 0.72 0.84 0.37 10.00 2.27 0.08 7.26 153A 154A 154B 0.08 0.74 0.06 0.06 5.00 5.04 0.00 0.31 460.42 460.04 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 1.57 7.26 4.52 0.00 8.91 458.87 455.13 187.03 0.02000 24 Circular 1 34.66 0.00140 0.69 0.96 0.38 9.24 2.02 0.34 7.59 153C 1154 154C 0.11 0.72 0.08 1.37 7.09 4.55 0.00 8.03 462.99 461.56 57.06 0.02506 18 Circular 1 1 18.01 0.005201 0.70 0.81 0.36 9.90 2.22 0.10 7.18 155 156 154 0.11 0.72 0.08 0.08 5.00 6.54 0.00 0.50 463.85 463.09 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 1154 0.13 0.74 0.10 1.22 6.82 6.00 0.00 7.34 470.22 466.38 153.79 0.024971 18 Circular 1 17.98 0.00430 0.67 0.76 0.35 9.66 2.12 0.27 7.09 159 160 158 0.14 0.74 0.10 0.10 5.00 6.54 0.00 0.65 473.03 472.66 37.79 0.00979 15 Circular 1 6.92 0.00010 0.26 0.18 0.16 3.55 0.46 0.18 5.18 161 162A 158 0.00 0.00 1.02 6.65 4.65 0.00 6.17 475.61 473.87 87.11 0.01997 18 Circular 1 16.08 0.00310 0.64 0.73 0.34 8.50 1.77 0.17 6.82 161A 162 162A 0.08 0.74 0.06 1.02 6.47 4.69 0.00 6.17 478.84 476.97 93.31 0.02004 18 Circular 1 16.11 10.00310 0.64 0.73 0.34 8.51 1.77 0.18 6.65 163 164 162 0.10 0.77 0.07 0.07 5.00 6.54 0.00 0.48 482.19 481.79 37.74 0.01060 15 Circular 1 7.21 0.00000 0.22 0.14 0.13 3.33 0.39 0.19 5.19 165 1166 162 1 0.02 0.75 0.02 0.89 6.15 6.19 0.00 5.55 480.25 479.04 120.61 0.01003 18 Circular 1 11.40 0.00250 0.74 0.87 0.37 6.41 1.38 0.31 6.47 167 1168 166 1 0.02 0.77 0.01 0.88 6.04 6.22 0.00 5.45 480.77 480.35 42.31 0.00993 18 Circular 1 11.34 0.00240 0.73 0.86 0.37 6.36 1.36 0.11 6.15 LD-229 STORM SEWER DESIGN COMPUTATIONS STORM FREQUENCY 0 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 COEFF. "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/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) Lateral7CF CFS 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 -LAT1D Minutes (17) REFERENCE (l) STA. REFERENCE (2) STA. 169 170A 168 0.00 0.00 0.28 5.50 4.92 0.00 1.65 482.37 480.87 149.53 0.01003 18 Circular 1 11.40 0.00020 0.39 0.36 0.23 4.60 0.71 0.54 6.04 169A 170 170A 0.16 0.65 0.11 0.28 5.16 5.00 0.00 1.65 483.41 482.47 94.12 0.00999 18 Circular 1 11.37 0.00020 0.39 0.36 0.23 4.59 0.71 0.34 5.50 171 172 170 0.24 0.72 0.17 0.17 5.00 6.54 0.00 1.12 483.90 483.51 39.35 0.00991 15 Circular 1 6.97 0.00030 0.34 0.27 0.20 4.17 0.61 0.16 5.16 201 202 200 0.00 0.00 2.75 6.60 4.66 0.00 16.96 418.37 414.00 87.47 0.04996 24 Circular 1 54.78 0.00500 0.76 1.10 0.41 15.37 4.43 0.10 6.69 203 204 202A 0.07 0.72 0.05 2.70 6.45 6.10 0.00 16.65 428.58 427.38 60.11 0.01996 24 Circular 1 34.62 0.00480 0.98 1.53 0.49 10.91 2.83 0.09 6.54 203A 202A 202 0.07 0.73 0.05 2.75 6.54 6.08 0.00 16.96 427.28 426.55 36.60 0.01995 24 Circular 1 34.62 0.00500 0.99 1.55 0.50 10.96 2.86 0.06 6.60 205 206 204 0.13 0.74 0.09 0.09 5.00 6.54 1 0.00 0.61 429.13 428.68 29.79 0.01511 15 Circular 1 8.60 0.00010 0.23 0.15 0.14 4.05 0.48 0.12 5.12 207 208 208B 0.14 0.76 0.11 2.37 6.26 6.16 0.00 14.92 431.21 430.13 53.99 0.02000 24 Circular 1 34.66 0.00390 0.92 1.41 0.47 10.62 2.67 0.09 6.34 207A 208A 208B 0.19 0.69 0.13 0.13 1 5.00 5.04 0.00 1 0.67 430.84 430.13 29.71 0.02390 15 Circular 1 1 10.82 0.000101 0.21 0.14 0.13 4.90 0.58 0.10 5.10 207B 1208B 204 1 0.06 1 0.76 0.05 2.56 6.34 4.71 0.00 15.77 430.03 428.68 67.67 0.01995 24 Circular 1 34.62 0.00430 0.95 1.47 0.48 10.76 2.75 0.11 6.45 209 1210 1210B 0.09 0.70 0.06 2.24 6.03 6.22 0.00 14.15 434.35 433.24 55.42 10.020031 24 Circular 1 34.69 0.00350 0.89 1.35 0.46 10.48 2.59 0.09 6.12 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 2.27 6.12 4.77 0.00 14.26 433.14 431.38 88.24 0.01995 24 Circular 1 34.62 0.00350 0.89 1.36 0.46 10.49 2.60 0.14 6.26 211 212 210 0.03 0.78 0.03 2.18 5.98 6.24 0.00 13.77 435.09 434.45 32.04 0.01998 24 Circular 1 34.64 0.00330 0.88 1.33 0.46 10.40 2.56 0.05 6.03 213 214 212 0.06 0.73 0.04 2.16 5.91 6.26 0.00 13.62 436.01 435.20 40.45 0.02002 24 Circular 1 34.68 0.00320 0.87 1.31 0.46 10.37 2.54 0.07 5.98 215 216 214 0.12 0.76 0.09 0.18 5.04 6.53 0.00 1.19 436.72 436.11 30.60 0.01993 15 Circular 1 9.88 10.000301 0.29 0.22 0.17 5.44 0.75 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 1220 1214 0.07 0.79 0.06 1.93 5.79 6.29 0.00 12.20 438.40 436.32 83.40 10.024941 24 Circular 1 38.70 0.00260 0.77 1.12 0.42 10.92 2.62 0.13 5.91 221 222 220 0.05 0.72 0.04 1.88 5.72 6.31 0.00 11.85 338.80 338.50 30.71 0.00977 24 Circular 1 24.22 0.00240 0.99 1.55 0.50 7.67 1.90 0.07 5.79 223 224 224B 0.06 0.61 0.04 0.53 5.43 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 1.45 0.20 5.63 223A 224A 224B 0.17 0.74 0.13 0.13 5.00 5.04 0.00 0.65 441.28 440.98 29.79 0.01007 15 Circular 1 7.02 0.00010 0.26 0.18 0.15 3.57 0.45 0.14 5.14 223B 224B 222 0.26 0.57 0.15 0.81 5.63 4.88 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 5.72 225 226 224 0.12 0.76 0.09 0.09 5.00 6.54 0.00 0.58 447.26 446.66 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 9.90 10.000501 0.33 0.25 0.19 5.79 0.85 0.17 5.28 227 1228 1222 0.06 0.77 0.04 1.03 5.45 6.40 0.00 6.68 440.78 440.08 34.83 10.020101 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 5.36 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 18 Circular 1 16.00 0.00260 0.62 0.69 0.33 8.30 1.69 0.04 5.36 233 234 232 0.24 0.39 0.09 0.66 5.13 6.50 0.00 4.31 444.61 442.87 86.87 0.02003 18 Circular 1 16.11 0.00150 0.53 0.56 0.29 7.72 1.46 0.19 5.32 235 236 234 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 1 927 0.00290 0.55 0.52 0.29 7.14 1.34 0.13 5.13 237 238 232 0.00 0.00 0.27 5.25 4.98 0.00 1.43 446.72 445.45 63.29 0.02007 15 Circular 1 9.91 0.00040 0.32 0.25 0.19 5.75 0.84 0.18 5.43 239 240 238 0.10 0.66 0.07 0.07 5.00 6.54 0.00 0.44 447.20 446.82 18.56 0.02047 15 Circular 1 10.01 0.000001 0.18 0.11 0.11 4.09 0.44 0.08 5.08 241 1242 1238 0.28 0.74 0.21 0.21 5.00 6.54 0.00 1.34 450.75 449.09 83.05 10.01999 15 Circular 1 9.89 0.00040 0.31 0.24 0.18 5.63 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 1.09 6.27 4.73 0.00 5.65 431.21 430.91 38.92 0.00771 18 Circular 1 9.99 0.00260 0.81 0.97 0.39 5.83 1.34 0.11 6.38 403 404 404A 0.60 0.69 0.41 0.41 5.00 6.54 0.00 2.71 432.35 431.60 106.66 0.00703 15 Circular 1 5.87 0.00160 0.60 0.58 0.30 4.69 0.94 0.38 5.38 403A 404A 402 0.15 0.56 0.08 0.50 5.38 4.95 0.00 3.12 431.50 431.31 26.75 0.00710 15 Circular 1 5.90 0.00210 0.65 0.64 0.32 4.87 1.02 0.09 5.47 405 406 402 0.21 0.63 0.13 0.59 6.25 6.16 0.00 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 0.00 2.88 438.52 432.47 172.89 0.03499 15 Circular 1 1 13.09 10.001801 0.40 0.34 0.22 8.55 1.53 0.34 6.25 409 410 408 0.00 0.00 0.40 5.82 6.28 0.00 2.49 439.72 438.95 38.46 0.02002 15 Circular I 1 1 9.90 0.00130 0.43 0.37 0.24 6.72 1.13 0.10 5.91 LD-229 STORM SEWER DESIGN COMPUTATIONS STORM FREQUENCY 0 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 COEFF. "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/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) Lateral7CF CFS 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. 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 0.41 442.54 441.40 56.83 0.02006 15 Circular 1 9.91 0.00000 0.17 0.10 0.11 3.98 0.42 0.24 5.24 413 414 412 0.08 0.71 0.06 0.06 5.00 6.54 0.00 0.36 441.79 441.05 36.82 0.020101 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 5.82 417 418 416 0.09 0.68 0.06 0.13 5.17 6.49 0.00 0.87 451.91 451.48 43.16 0.00996 15 Circular 1 6.98 0.00020 0.30 0.23 0.18 3.89 0.53 0.19 5.36 417A 416 416A 0.07 0.53 0.04 0.17 5.36 4.95 0.00 1.07 451.38 451.06 32.38 0.00988 15 Circular 1 6.96 0.00020 0.33 0.26 0.19 4.10 0.59 0.13 5.49 417B 416A 416B 0.01 0.69 0.01 0.18 5.50 4.92 1 0.00 1.11 450.96 450.42 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 0.46 452.35 452.01 33.58 0.01013 15 Circular 1 7.04 0.00000 0.22 0.14 0.13 3.24 0.38 0.17 5.17 505 506 504 0.03 0.71 0.02 0.28 5.12 5.01 0.00 9.64 482.07 481.81 12.56 0.02070 24 Circular 1 32.55 0.00190 0.75 1.07 0.41 9.02 2.01 0.02 5.15 507 508 506 0.40 0.64 0.26 0.26 5.04 5.03 0.00 9.52 483.21 482.29 45.98 0.02001 24 Circular 1 32.00 0.00180 0.75 1.07 0.41 8.88 1.97 0.09 5.12 509 510 1508 1 0.00 1 1 0.00 1 0.00 1 5.00 0.00 0.00 1 8.23 483.70 483.31 19.58 0.019921 24 1 Circular 1 1 1 31.93 0.00140 0.69 1 0.97 0.38 1 8.52 1.82 0.04 5.04 601 600 168 1 2.35 1 0.25 1 0.59 1 0.59 1 5.00 6.54 0.00 1 3.83 482.21 1 480.96 62.63 0.01996 24 1 Circular I 1 1 34.62 0.00030 0.45 1 0.53 1 0.27 1 7.26 1 1.27 1 0.14 1 5.14 LD-347 PROJECT: Southwood Redevelopment - Village 1 DESIGNED BY: CG HYDRAULIC GRADE LINE ANALYSIS Checked: CS 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. Qo (CFS/CMS) LENGTH PIPE LO (FVM) FRICTION SLOPE, Sfo (FT/FT) (M/M) FRICTION LOSS Hf (FVM) JUNCTION LOSS SURFACE FLOW Adj. Ht 1.3 Ht (FVM) Inlet Shaping? YIN 0.5 Ht (FVM) FINAL H (FVM) Inlet Water Surface Elevation Top of MH Top of Inlet Elev. APPROX. Adjustment? Vo Cont". Ho (FVM) Vi Vi'2/2g Hi (Expn) 0.35'MAX. (V2/2g) SKEW Angle K Bend H (FVM) Sum HL (Pt/M) 1 2 3 4 5 6 (7) (8 9 10 11 12 13 14 15 16 16 17 18 19 100 1 409.000 102 409.000 3.00 411.400 36 71.489 37.07 0.01023 0.379 13.975 0.758 11.262 1.969 0.689 0.0 0.00 0.000 1.447 0.000 1.447 YES 0.724 1.103 412.503 415.000 O.K. 104 409.660 2.50 412.503 30 36.869 80.72 0.00720 0.581 11.262 0.492 17.265 4.629 1.620 0.0 0.00 0.000 2.112 0.000 2.112 YES 1.056 1.637 414.140 423.720 O.K. 104A 410.810 2.50 414.140 30 34.541 25.49 0.00632 0.161 9.926 0.382 10.100 1.584 0.554 0.0 0.00 0.000 0.937 0.000 0.937 YES 0.468 0.629 414.770 433.060 O.K. 122 413.100 2.50 415.100 30 36.070 9.96 0.00689 0.069 10.100 0.396 0.000 0.000 0.000 0.0 0.00 0.000 0.396 0.000 0.396 YES 0.198 0.267 415.367 419.520 O.K. 106 418.300 2.50 420.300 30 36.869 60.96 0.00720 0.439 17.265 1.157 14.474 3.253 1.139 0.0 0.00 0.000 2.296 0.273 2.296 YES 1.148 1.587 421.887 432.440 O.K. 108 421.020 2.50 423.020 30 36.596 71.00 0.00709 0.503 14.474 0.813 13.924 3.011 1.054 0.0 0.00 0.000 1.867 0.237 1.867 YES 0.933 1.437 424.457 432.850 O.K. 110 428.050 1.25 429.050 15 2.057 92.51 0.00090 0.084 8.505 0.281 8.646 1.161 0.406 0.0 0.00 0.000 0.687 0.145 0.687 YES 0.344 0.427 432.524 437.000 O.K. 112 432.310 1.25 433.310 15 1.912 186.89 0.00078 0.146 8.646 0.290 6.897 0.739 0.259 0.0 0.00 0.000 0.549 0.909 0.713 YES 0.357 0.503 441.955 466.680 O.K. 114 441.760 1.25 442.760 15 1.003 92.44 0.00021 0.020 6.897 0.185 5.982 0.556 0.194 0.0 0.00 0.000 0.379 0.382 0.493 YES 0.246 0.266 446.140 450.970 O.K. 116 446.020 1.25 447.020 15 0.621 76.55 0.00008 0.006 5.982 0.139 0.000 0.000 0.000 0.0 0.00 0.000 0.139 0.621 0.181 YES 0.090 0.097 449.634 454.520 O.K. 120 422.900 2.00 424.500 24 34.620 61.43 0.02086 1.281 13.924 0.753 0.000 0.000 0.000 0.0 0.00 0.000 0.753 0.000 0.753 YES 0.376 1.658 426.158 432.910 O.K. LD-347 PROJECT: Southwood Redevelopment - Village 1 DESIGNED BY: CG HYDRAULIC GRADE LINE ANALYSIS Checked: CS 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. Qo (CFS/CMS) LENGTH PIPE LO (Ft1M) FRICTION SLOPE, Sfo (FT/FT) (M/M) FRICTION LOSS Hf (FVM) JUNCTION LOSS SURFACE FLOW Adj. Ht 1.3 Ht (Ft/M) Inlet Shaping? YIN 0.5 Ht (Ft/M) FINAL H (Ft/M) Inlet Water Surface Elevation Top of MH Top of Inlet Elev. APPROX. Adjustment? VO Cont,. Ho Ho Vi Vi'2/2g Hi (Expn) 0.35'MAX. (Vi2/2g) SKEW Angle K Bend H (Ff/M) Sum HL (FVM) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 16 17 18 19 126 1 416.200 128 416.200 2.50 418.200 30 23.030 15.98 0.00281 0.045 17.599 1.202 17.590 4.804 1.682 0.0 0.00 0.000 2.884 0.000 2.884 YES 1.442 1.487 419.687 430.210 O.K. 130 424.710 2.50 426.710 30 23.030 56.67 0.00281 0.159 17.590 1.201 10.632 1.755 0.614 0.0 0.00 0.000 1.815 0.000 1.815 YES 0.908 1.067 428.891 444.190 O.K. 132 436.360 2.50 438.360 30 23.030 31.93 0.00281 0.090 10.632 0.439 10.451 1.696 0.594 0.0 0.00 0.000 1.032 0.409 1.032 YES 0.516 0.606 438.966 443.200 O.K. 134 437.270 1.25 438.966 15 1.014 31.78 0.00022 0.007 5.208 0.105 0.000 0.000 0.000 0.0 0.00 0.000 0.105 1.014 0.137 YES 0.068 0.075 439.041 443.560 O.K. 136A 436.940 2.50 438.966 30 21.764 62.28 0.00251 0.156 10.451 0.424 10.446 1.694 0.593 0.0 0.00 0.000 1.017 0.132 1.017 YES 0.509 0.665 439.631 445.040 O.K. 136 437.970 2.50 439.970 30 21.632 66.11 0.00248 0.164 10.446 0.424 9.128 1.294 0.453 0.0 0.00 0.000 0.876 0.335 0.876 YES 0.438 0.602 440.572 446.990 O.K. 144 440.910 2.00 442.510 24 11.814 171.99 0.00243 0.418 8.983 0.313 7.518 0.878 0.307 0.0 0.00 0.000 0.620 0.392 0.620 YES 0.310 0.728 444.362 454.080 O.K. 148 443.590 2.00 445.190 24 10.597 128.94 0.00195 0.252 7.518 0.219 9.443 1.385 0.485 0.0 0.00 0.000 0.704 0.311 0.704 YES 0.352 0.604 445.799 458.830 O.K. 150 452.380 2.00 453.980 24 10.286 101.95 0.00184 0.188 9.443 0.346 9.997 1.552 0.543 0.0 0.00 0.000 0.889 0.638 0.889 YES 0.445 0.632 455.077 460.860 O.K. 154C 460.330 1.50 461.530 18 8.380 45.25 0.00567 0.257 9.997 0.388 9.902 1.523 0.533 0.0 0.00 0.000 0.921 0.000 0.921 YES 0.460 0.717 462.247 468.240 O.K. 154 461.560 1.50 462.760 18 8.031 57.06 0.00521 0.297 9.902 0.381 9.658 1.448 0.507 0.0 0.00 0.000 0.888 0.346 0.888 YES 0.444 0.741 463.692 470.850 O.K. 158 466.380 1.50 467.580 18 7.335 153.79 0.00434 0.668 9.658 0.362 8.497 1.121 0.392 0.0 0.00 0.000 0.754 0.570 0.754 YES 0.377 1.045 470.887 478.640 O.K. 162A 473.870 1.50 475.070 18 6.165 87.11 0.00307 0.267 8.497 0.280 8.509 1.124 0.393 0.0 0.00 0.000 0.674 0.000 0.674 YES 0.337 0.604 476.254 483.300 O.K. 162 476.970 1.50 478.170 18 6.165 93.31 0.00307 0.286 8.509 0.281 6.406 0.637 0.223 0.0 0.00 0.000 0.504 0.276 0.504 YES 0.252 0.538 479.484 487.740 O.K. 166 479.040 1.50 480.240 18 5.546 120.61 0.00248 0.299 6.406 0.159 6.355 0.627 0.219 0.0 0.00 0.000 0.379 0.093 0.379 YES 0.189 0.489 480.988 491.970 O.K. 168 480.350 1.50 481.550 18 5.453 42.31 0.00240 0.102 6.355 0.157 7.260 0.818 0.286 0.0 0.00 0.000 0.443 0.081 0.443 YES 0.222 0.323 481.873 491.640 O.K. 170A 480.870 1.50 482.070 18 1.654 149.53 0.00022 0.033 4.597 0.082 4.590 0.327 0.115 0.0 0.00 0.000 0.197 0.000 0.197 YES 0.098 0.131 482.756 498.880 O.K. 170 482.470 1.50 483.670 18 1.654 94.12 0.00022 0.021 4.590 0.082 4.165 0.269 0.094 0.0 0.00 0.000 0.176 0.535 0.229 YES 0.114 0.135 483.805 488.420 O.K. 172 483.510 1.25 484.510 15 1.119 39.35 0.00027 0.011 4.165 0.067 0.000 0.000 0.000 0.0 0.00 0.000 0.067 1.119 0.088 YES 0.044 0.054 484.564 488.930 O.K. 138 439.060 2.00 440.660 24 10.198 34.16 0.00181 0.062 6.725 0.176 6.671 0.691 0.242 0.0 0.00 0.000 0.417 0.206 0.417 YES 0.209 0.271 440.931 447.900 O.K. 140 439.420 2.00 441.020 24 9.992 79.43 0.00174 0.138 6.671 0.173 10.558 1.731 0.606 0.0 0.00 0.000 0.779 1.998 0.779 YES 0.389 0.527 441.547 445.030 O.K. 142 440.400 1.25 441.547 15 7.994 63.87 0.01364 0.871 10.558 0.433 0.000 0.000 0.000 0.0 0.00 0.000 0.433 7.994 0.563 YES 0.281 1.153 443.060 449.240 O.K. 144B 439.640 2.00 441.240 24 12.592 78.15 0.00276 0.216 9.128 0.323 3.234 0,162 0,057 0.0 0.00 0.000 0.380 0.387 0.380 YES 0.190 0.406 441.714 449.230 O.K. LD-347 PROJECT: Southwood Redevelopment - Village 1 DESIGNED BY: CG HYDRAULIC GRADE LINE ANALYSIS Checked: CS 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, 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 (FVM) 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) 144A 443.310 1.25 444.310 15 0.459 32.70 0.00004 0.001 3.234 0.041 0.000 0.000 0.000 0.0 0.00 0.000 0.041 0.459 0.053 YES 0.026 0.028 444.338 449.610 O.K. 146 447.970 1.25 448.970 15 0.949 37.79 0.00019 0.007 5.107 0.101 0.000 0.000 0.000 0.0 0.00 0.000 0.101 0.949 0.132 YES 0.066 0.073 449.043 454.560 O.K. 152 454.420 1.25 455.420 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 0.035 455.455 461.950 O.K. 154E 455.130 2.00 456.730 24 8.913 187.03 0.00138 0.259 9.243 0.332 2.873 0.128 0.045 0.0 0.00 0.000 0.377 0.257 0.377 YES 0.188 0.447 459.562 466.030 O.K. 154A 460.040 1.25 461.040 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 0.022 461.062 466.510 O.K. 156 463.090 1.25 464.090 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 0.047 464.137 471.430 O.K. 160 472.660 1.25 473.660 15 0.654 37.79 0.00009 0.003 3.551 0.049 0.000 0.000 0.000 0.0 0.00 0.000 0.049 0.654 0.064 YES 0.032 0.035 473.695 479.120 O.K. 164 481.790 1.25 482.790 15 0.478 37.74 0.00005 0.002 3.330 0.043 0.000 0.000 0.000 0.0 0.00 0.000 0.043 0.478 0.056 YES 0.028 0.030 482.820 488.210 O.K. 600 480.960 2.00 482.560 24 3.834 62.63 0.00026 0.016 7.260 0.205 0.000 0.000 0.000 0.0 0.00 0.000 0.205 3.834 0.266 YES 0.133 0.149 482.709 487.290 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. Co (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 (FVM) Inlet Shaping? YIN 0.5 Ht (FVM) FINAL H (FVM) Inlet Water Surface Elevation Top of MH Top of Inlet Elev. APPROX. Adjustment? V0 Cont,. Ho Ho Vi Vi`2/2g Hi (Expn) 0.35`MAX. (Vi2/2g) SKEW Angle K Bend H (FVM) Sum HL (FVM) 1 (2) 3 4 (5) (6 8 9 10 11 12 13 14 15 16 16 17 18 19 200 414.000 202 414.000 2.00 415.600 24 16.964 87.47 0.00501 0.438 15.374 0.918 10.963 1.866 0.653 0.0 0.00 0.000 1.571 0.000 1.571 YES 0.785 1.223 419.134 432.790 O.K. 202A 426.550 2.00 428.150 24 16.964 36.60 0.00501 0.183 10.963 0.467 10.913 1.849 0.647 0.0 0.00 0.000 1.114 0.310 1.114 YES 0.557 0.740 428.890 433.060 O.K. 204 427.380 2.00 428.980 24 16.654 60.11 0.00483 0.290 10.913 0.462 10.762 1.798 0.629 0.0 0.00 0.000 1.092 0.317 1.092 YES 0.546 0.836 429.816 434.610 O.K. 206 428.680 1.25 429.816 15 0.608 29.79 0.00008 0.002 4.050 0.064 0.000 0.000 0.000 0.0 0.00 0.000 0.064 0.608 0.083 YES 0.041 0.044 429.860 435.090 O.K. 208B 428.680 2.00 430.280 24 15.769 67.67 0.00433 0.293 10.762 0.450 10.618 1.751 0.613 0.0 0.00 0.000 1.062 0.226 1.062 YES 0.531 0.824 431.104 436.330 O.K. 208 430.130 2.00 431.730 24 14.916 53.99 0.00387 0.209 10.618 0.438 10.485 1.707 0.597 0.0 0.00 0.000 1.035 0.659 1.035 YES 0.518 0.727 432.457 437.640 O.K. 210B 431.380 2.00 432.980 24 14.257 88.24 0.00354 0.312 10.485 0.427 10.479 1.705 0.597 0.0 0.00 0.000 1.024 0.110 1.024 YES 0.512 0.824 434.034 440.350 O.K. 210 433.240 2.00 434.840 24 14.147 55.42 0.00348 0.193 10.479 0.426 10.397 1.679 0.587 0.0 0.00 0.000 1.014 0.373 1.014 YES 0.507 0.700 435.540 441.830 O.K. 212 434.450 2.00 436.050 24 13.774 32.04 0.00330 0.106 10.397 0.420 10.372 1.670 0.585 0.0 0.00 0.000 1.004 0.156 1.004 YES 0.502 0.608 436.658 441.870 O.K. 214 435.200 2.00 436.800 24 13.618 40.45 0.00323 0.131 10.372 0.418 10.916 1.850 0.648 0.0 0.00 0.000 1.065 0.275 1.065 YES 0.533 0.663 437.463 442.430 O.K. 220 436.320 2.00 437.920 24 12.204 83.40 0.00259 0.216 10.916 0.463 7.668 0.913 0.320 0.0 0.00 0.000 0.782 0.359 0.782 YES 0.391 0.607 439.172 445.620 O.K. 222 338.500 2.00 439.172 24 11.845 30.71 0.00244 0.075 7.668 0.228 8.699 1.175 0.411 0.0 0.00 0.000 0.640 0.246 0.640 YES 0.320 0.395 439.567 445.350 O.K. 228 440.080 1.50 441.280 18 6.679 34.83 0.00360 0.125 8.699 0.294 8.601 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 6.398 49.76 0.00330 0.164 8.601 0.287 8.303 1.070 0.375 0.0 0.00 0.000 0.662 0.668 0.662 YES 0.331 0.495 442.555 447.620 O.K. 232 442.420 1.50 443.620 18 5.730 17.71 0.00265 0.047 8.303 0.268 7.722 0.926 0.324 0.0 0.00 0.000 0.592 1.416 0.769 YES 0.385 0.432 444.052 448.730 O.K. 238 445.450 1.25 446.450 15 1.434 63.29 0.00044 0.028 5.753 0.128 5.633 0.493 0.172 0.0 0.00 0.000 0.301 0.000 0.301 YES 0.150 0.178 447.041 453.460 O.K. 242 449.090 1.25 450.090 15 1.341 83.05 0.00038 0.032 5.633 0.123 0.000 0.000 0.000 0.0 0.00 0.000 0.123 1.341 0.160 YES 0.080 0.112 451.061 456.900 O.K. 208A 430.130 1.25 431.130 15 0.671 29.71 0.00010 0.003 4.900 0.093 0.000 0.000 0.000 0.0 0.00 0.000 0.093 0.671 0.121 YES 0.061 0.063 431.193 436.810 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 1.25 437.463 15 1.189 30.60 0.00030 0.009 5.436 0.115 6.128 0.583 0.204 0.0 0.00 0.000 0.319 0.581 0.414 YES 0.207 0.216 437.680 442.760 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. 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. Co (CFS/CMS) LENGTH PIPE Lo (Ft/M) FRICTION SLOPE, Sfo (FT/FT) (M/M) FRICTION LOSS Hf (FVM) JUNCTION LOSS SURFACE FLOW Adj. Ht 1.3 Ht (FVM) Inlet Shaping? YIN 0.5 Ht (FVM) FINAL H (FVM) Inlet Water Surface Elevation Top of MH Top of Inlet Elev. APPROX. Adjustment? V0 Cont,. Ho Ho Vi Vi`2/2g Hi (Expn) 0.35`MAX. (Vi2/2g) SKEW Angle K Bend H (Ft/M) Sum HL (FVM) 1 (2) 3 4 5 6 8 9 10 11 12 13 14 15 16 16 17 18 19 224B 440.060 1.25 441.060 15 3.950 40.95 0.00333 0.136 7.615 0.225 8.158 1.033 0.362 0.0 0.00 0.000 0.587 0.718 0.587 YES 0.293 0.430 441.490 446.840 O.K. 224 442.370 1.25 443.370 15 2.961 98.00 0.00187 0.183 8.158 0.258 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. 226 446.660 1.25 447.660 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 0.052 447.712 453.320 O.K. 234 442.870 1.50 444.070 18 4.314 86.87 0.00150 0.131 7.722 0.231 7.140 0.792 0.277 0.0 0.00 0.000 0.509 0.598 0.509 YES 0.254 0.385 445.140 449.650 O.K. 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. 240 446.820 1.25 447.820 15 0.438 18.56 0.00004 0.001 4.092 0.065 0.000 0.000 0.000 0.0 0.00 0.000 0.065 0.438 0.085 YES 0.042 0.043 447.863 451.490 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. 226A 445.410 1.25 446.410 15 1.473 57.42 0.00046 0,027 5.792 0.130 0.000 0.000 0.000 0.0 0.00 0.000 0.130 0.891 0.169 YES 0.085 0.111 446.886 452.830 O.K. LD-347 PROJECT: Southwood Redevelopment - Village 1 DESIGNED BY: CG HYDRAULIC GRADE LINE ANALYSIS Checked: CS 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. Qo (CFS/CMS) LENGTH PIPE Lo (Ft/M) FRICTION SLOPE, Sfo (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 (Expo) 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 19 300 430.910 302 430.910 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 0.081 431.991 432.930 O.K. LD-347 PROJECT: Southwood Redevelopment - Village 1 DESIGNED BY: CG HYDRAULIC GRADE LINE ANALYSIS INCIDENCE PROBABILITY 10 Year Checked: CS 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 (FUM) FRICTION SLOPE, Sfo (FT/FT) (WM) FRICTION LOSS Hf (FUM) JUNCTION LOSS SURFACE FLOW Adj. Ht 1.3 Ht (FVM) Inlet Shaping? Y/N 0.5 Ht (FVM) FINAL H (FUM) Inlet Water Surfaoe Elevation Top of MH Top of Inlet Elev. APPROX. Adjustment? V0 Cor" Ho Ho Vi Vi'2/2g Hi (Expn) 0.35'MAX. (Vi2/2g) SKEW Angle K Bend H (FVM) Sum HL (FVM) 1 2 3 4 5 6 (7) (8 9 10 11 12 13 14 15 16 16 17 18 19 400 1 430.910 402 430.910 1.50 432.110 18 5.650 38.92 0.00258 0.100 5.828 0.132 8.653 1.163 0.407 0.0 0.00 0.000 0.539 0.000 0.539 YES 0.269 0.370 432.480 437.620 O.K. 406 432.070 1.25 433.070 15 3.689 10.05 0.00290 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 2.876 172.89 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 2.488 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 450.420 1.25 451.420 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 0.094 451.514 458.060 O.K. 416 451.060 1.25 452.060 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 0.082 452.142 458.020 O.K. 418 451.480 1.25 452.480 15 0.873 43.16 0.00016 0.007 3.886 0.059 3.238 0.163 0.057 0.0 0.00 0.000 0.116 0.415 0.150 YES 0.075 0.082 452.562 458.710 O.K. 420 452.010 1.25 453.010 15 0.458 33.58 0.00004 0.002 3.238 0.041 0.000 0.000 0.000 0.0 0.00 0.000 0.041 0.458 0.053 YES 0.026 0.028 453.038 458.430 O.K. 404A 431.310 1.25 432.480 15 3.118 26.75 0.00208 0.056 4.873 0.092 4.686 0.341 0.119 0.0 0.00 0.000 0.212 0.410 0.212 YES 0.106 0.161 432.641 437.240 O.K. 404 431.600 1.25 432.641 15 2.708 106.66 0.00157 0.167 4.686 0.085 0.000 0.000 0.000 0.0 0.00 0.000 0.085 2.708 0.111 YES 0.055 0.222 432.946 436.490 O.K. 412 439.820 1.25 440.820 15 1.384 56.58 0.00041 0.023 5.684 0.125 3.976 0.245 0.086 0.0 0.00 0.000 0.211 0.504 0.275 YES 0.137 0.161 441.266 445.970 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 0.038 442.088 446.170 O.K. 412A 441.400 1.25 442.400 15 0.00004 0.002 3.976 0.061 0.000 0.000 0.000 0.0 0.00 0.000 0.061 0.408 0.080 YES 0.040 0.042 442.713 450.560 O.K. EO40#856 PROJECT Southwodd Redeveopment- VBIageI SHEEP UNITS OF ENGLISH CULVERT DESIGNER REVIEWER: DESIGN FORM LD-269 DATE DATE: 6/42(120 ROAD COUNTY Alhemade(Zone 2) CULVERT 501 VA NOAA Station Charlottesville HYDROLOGICAL DATA Method: INPUT Drainage Area: 3.317 Time of Concentration 5 DESIGN FLOWS Shldr. ELSE- Eli= L= S= SKEW= Ek, Ir ELHWQ= 45454 452 W R 45286 R 1219 it 7,88% 00 Roadway Width 28.7 it ROADWAY R it_______________________________________________ Hwi ___________________5��� DEPRESSION "nsRed 0013 ELEVATION _____ 456.53 R __________ Ek-- Rnad Length --- H TW 44315 IN Freeboard= Shur. Elev. RI= TWDEPTH TW VO.. Chanrnl6w.El. R Suface Type HVALUEI 027 325 44325 PAVED it it ft his it ILL (years) FLOW (cf6) 10 Design $23 2 Check 6.43 25 Max. 1035 CULVERT DESCRUPTION: TYPE: Siegle/Moltiple ConforMW Ides Edge Description: Smooth Tapered Inlet Tlv08l TOTAL FLOW Q c@ FLOWP BARREL QM cf HEADWATER CALCULATIONS CONTROL HEADWATER ELEV LI OUTLET VEL fps MNIMIIM SHOULDER ELEV, n COMMEN It EVLET CONTROL OUTLET CONTROL Sin a/MulO le Confonnin / Broken Back Culverts HWJD HWi ft FALL R ELHw, R Tw R do R (dctD)Q R he R ke H R ELHWo R MATERW, SHAPE Size(m) N Mmmmgs n Concrete Circular IS 1 0.01 823 82 L12 168 008 454,54 027 LII 1.31 1.31 020 1.15 445.70 454.54 1430 643 64 0.98 147 008 45433 D25 098 124 124 020 0,70 445.19 454.33 1334 1035 104 1,31 196 008 454.82 0.30 L24 1.37 1.37 020 1.82 44643 454.82 15.21 Broken Back Culvert TAILWATER DATA: TAILWATER RESULTS: ROADWAY DATA: ROADWAY OVERTOPPING: LENGTH Elev. SKEW, Thicent Shape Triangular = 0.035 Discharge oR Elevation ft Flow depM R Wier., IF, °adway width,R 287 Discharge c6 0—PPag Dlslarge efs �Ppos Ekvanon R Bosom Wuld,,it Side Slope It:(HAV) Side Skpe RL(H:1V) Clunnel Slope, Rlfl 000 urmcc Type PAVED 50.00 esi 44352 02] 325op d142 of Bond Elmame, It 456.53 Desi 0 000 18.00 heck .350 0253.06 LengM of Road,it 100 -heck 0 000 0.0830 44355 0.30 3d4 Mai. 0 000 Disance Elevation TECHNICAL FOOTNOTES: (1) USE Q/NB FOR BOX CULVERTS (4) ELhi=BWi+ ELi(INVERT OF INLET CONTROL SECTION) (6)he—TW or(dc+ D/2)(WRICBEVER IS GREATER) (2)HWi/D= BW/D OR BWUD FROM DESIGN CHARTS (5)TW BASED ON DOWNSTREAM CONTROL OR FLOW (7)H=11+kc+(29n2L)/R13W2g (3) FALL =HW1-(ELHWd-ELsf$ FALL IS ZERO FOR CULVERTS ON GRADE DEPTH IN CHANNEL SUBSCRIPT DEFINITIONS: COMMENTS / DISCUSSION: CULVERT BARREL SELECTED HWd DESIGN HEADWATER t 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 Sapthould Redeveopment- VBIageI SHEEP UNITS OF ENGLISH CULVERT DESIGNER REVIEWER: DESIGN FORM LD-269 DATE DATE: 10/142020 ROAD COUNTY Albernade(Zone 2) CULVERT 509 VA NOAA Station Charlottesville HYDROLOGICAL DATA Method: RATIONAL Drainage Area: 1.102 Acres Time ofConeentration 5 Minutes DESIGN FLOWS Shldr ELSE- Eli= L= S= SKEW= Ek, Ir ELHWd= 48487 48378 ft 48370 R 1958 it L999u 00 Roadway Width 10 R ROADWAY ELEVATION R it_______________________________________________ Hwi -------------- -------5��� DEPRESSION 0. "ns Bad 0013 488.00 R __________ E1o= Road Length --- H TW _ 483,31 25 Freeboard= Slid,Elev. Rr= TWDEPTH TW VE1.. Chanrol6w.El_ a Solace Type HVALUEI ass 5.02 483.52 PAVED ft it ft fps it ILL (years) FLOW(ofs) 10 Design 526 2 Check 225 25 Max. 6.62 CULVERT DESCRIPTION: TYPE: Siade/Moltiple COnforMW Later Edge Description: TepeKdlnlM Tlv08t E-� FLOWP BARREL QM HEADWATER CALCULATIONS CONTROL HEADWATER ELEV R OUTLET VELELEV.MATERIAL fps MN[MUMSmooth SHOULDER ft COMMENIt NUTCONTROL OUTLET CONTROL Sin a/Multi Ie Conformin / Broken Back Culverts HWJD HWi ft FALL ft ELHWi ft Tatdo A R (d D)n R Ip R ke H ft EI- Wo a SHAPE S12e(m) N Mannrngscf3 n Concrete Circular 24 1 0.01 526 53 L59 117 008 484,87 0.55 0,81 141 1.40 020 006 484.78 484.87 749 225 23 044 0.73 008 48443 0.40 052 126 126 020 001 484.58 484.58 5,85 662 66 0.66 1,33 008 48503 L60 091 I46 146 020 0,10 484.87 48503 800 Broken Back Calvert TAILWATER DATA: TAILWATER RESULTS: ROADWAY DATA: ROADWAY OVERTOPPING: LENGTH Elev. SKEW° Tammt Shape Triangular = 0.035 Discharge cR F3evation ft Flow depM d Vekcby fps SMarforce PSF °adway width,R 10 Discharge c6 0—PPinB Dlslarge efs �Ppsop Ekvation R BOnnm Width,ft Side Slope LC (HAV) Side State Rt(H:1V) Clunael Slope, HlB 000 ,faze Type PAWD 3.00 esi 4840] 0.55 502 2.84 op of Read Elevation, it 488 Deli 0 000 4.00 heck 48392 040 4k6 206 Lenghi of Road,It 25 'heck 0 000 0.0830 484.12 060 532 309 Ma,. 0 000 Distance Elevation TECHNICAL FOOTNOTES: (1) USE Q/NB FOR BOX CULVERTS (4) ELhi=BWi+ ELi(INVERT OF INLET CONTROL SECTION) (6)he—TW or(do + D/2)(WHICHEVER IS GREATER) (2)HWi/D= BW/D OR BVUD FROM DESIGN CHARTS (5)TW BASED ON DOWNSTREAM CONTROL OR FLOW (7)H=1I+ke+(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 ININLET CONTROL o OUTLET SHAPE: MATERIAL HWo HW IN OUTLET CONTROL sf Streambed ENTRANCE: @ culvert face CULVERTSOFf by ENSOFTEO, INC. o. 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NE .bM.Dm nn v � nu TOTO E IMPERVIOUS CODptl RURTUATED1eC1 CHECK. DR. TOTALPxOEPNORDS REMOVAL REWIRED ON SM NMI A A 11bNr1 REPTOMILPFFMISH A IIbIN TDTALPHmm A. ARbN.I tyrl TOTAL PHOSPHORUS REMAINING AFTER AENGES MU LOAD RECOURSES IN DA A Ob/yrl SEE WATER QUALITY COMPLIANCE TAB FOR SITE COMPLIANCE CALCULATIONS a Allb/yrl RIF NOw REMDYEOwD MEI .a A::W TDTALEITROGEE RENICAND IN DA. A RbMI ARRAGNA,Mnep,lua DPIDeam on Ob,l bne.W Nbep,lrab mmryy AnAmining MlM1yen LAM IM=1A xlbyan M1nweaN rmebryy PRAHANIImm EwaemYlzl CAR A.AIMI mA ERGRN REMOVEDwITN RUNOFF REDUMON PRACTICES IN DECTUALRUNDIFFRIEDUCUPONINn.ANEAA) W61 SEf WAIERWAUlY COMPUANCf TAR FOR SIEFGINGiIONE (InJwmNbn Mlyf 4� n. ... i ADS 7 wIL mlana lAA FIR)UP AnM m, IAA RRI 14 anuhuured RmPlno RR ommmm ommm Drainage Area B DULAWAYAGUN.LUNICAS- 1-1 bnrm,vale. ANO ManwemanE PY rthSEA INP m NunnH NMuManl I PE -ph— P°.H..br R.mma b BA B LWPI Pm1D.wbRmwLiUFAR—N tlam.m Dw BLNaI SWEN x,ma EY^9°Biml Vtlun.bem R, ANN der P�PbTm � UNEGMI.atlAm,° rs� Y° LGO,A x°m M AENDERE PractiCB wm.Gm, a.e'a M.. �piwm .Deal paw. RuwN RENT R INmBW amM xv upawm 1®ab Eream.0 ®m vr.N®bh. ASF.xMaE o.EAPLI 1+°"1 Am.lwml P AQlaal ws,.Bb, M'1 vtla.. IMI vam..lxal Fx'm ylxl Pmda (III) EASE vmA .P1 meb Pl zavama,w Awn Gmrsl n vee.umi wanzlsParsl : aH.ma D:.m.aBmmAmsav LRn ° zssa.p.a mrryau ISP=�nl E zoa. w:uo. r,a..nnai.nvn n lsa area.wmi o.ra.,no.ma, xz Esmxe a i..an a ,qgU_ l E.P.rmwbbI—Cll IRRI AT A A A AT TOO HAT HAT AN, A AGE RUCH AGE ST AM PAT, ON D b.,� nw TOTAL M TO AREATEo bCI CHECK. OUR. TOTALRUNGFF REOUCTIGN IN Dz B INI A.apbNrl 0..1 TOTAL PHOSPHORUS REM A WITH RUNOFF REDUCE ON A Rap Ml xss TOTAL PHOSPHORUS REMAINING AFTER APPLYING RUNOFF REDUCTION PRACTICES IN DA. AGlOrl s ME REA MIT CHOWITYCOMPWINCE TAG FOR SM WAIDEMNCE CALCULATIONS a. --ERGLED - rz ASnTI Alm nq nI--RE., Lmn+l rzLmn.l nzlLm ea.11mavl M. AS w TAS mm�m v anm�ww TOTAL IMPERVIOUS Dpq ARE CRON OR. TOTOT MAUSFAxFATREATEDU,f RCN. ON. TOTAL PHOSPHORUS REMOVAL REWIRED ON SITE RfiNj 9Oo z B::n: A..IIb/yrl TOTAL PHOSPHORUSAB IIbN.I TOTAL PH.IPH..ATUAza11 M1 TOTAL PHOSPHORUS ORIGIN NO AMR APPLYING KMP MAD REDUCTIONS IN DA Bllb/yrl SEE WA TER QUALITY COMPLIANCE TAB FOR SRE COMPLMNCE CALCULATIONS FIG RUNOFF HE DUCTUDIN ENACT 5 IN xa11 N,L xORFIGEx GEN REMOVEA OUTWITH RUNOFF REDUCTION ENACT SINDAallb/yA TOTALNI OGANREMGVEDINDZBpbMI — EAaep,lAStl Fmm BPv++m M Ob,l DIAGRAMS EYa^PREAStlb ANEENN y w.GWAKE xla4^WE IWI ADORRA M1nwetlN Pmmm PN newE TwDEARM l IT AM AN, AN AN ACE, AN AGA AW TER RED IS AUG SUCH ON A, FOR ALLAT Am AEG IN LOU ATER AN AND ON A, FOR TOO D HAD ON MEM ACE OR THAT F-A CAR AGE, HER ACH, 7TO ACE AT AM SCH z le'1 xrtRGGEx REMovFo vmx Ruxm TOTAL CTION RUNOFF REDUCTI IN Dn ••IWyA Gaa SEE NRADOE GLOOM COMPUANCf TAB FOa Lif CALNLAFF.E. RnJo .anon CA") 4S HER — 1 7 wmanE ba FU .nee 13EVIL m, (ao RR) 14 llu1U"118MPboaal ommmm ommm 4S 7S Onsite o Bioretention 1 To Biottion 2 5S 6P 4_ $P Offsite To Bioretention 1 BIORETENTION� ""'RETENTION 1 Subcat Reach Aon Link 2020-05-20 Energy Balance Prepared by Timmons Group Type 1124-hr 1-YR Rainfall=3.05" Printed 6/4/2020 Summary for Subcatchment 4S: Onsite To Bioretention 1 Runoff = 11.45 cfs @ 11.97 hrs, Volume= 0.508 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 2.710 98 Paved parking, HSG B 1.510 61 >75% Grass cover, Good, HSG B 0.460 60 Woods, Fair, HSG B 4.680 82 Weighted Average 1.970 42.09% Pervious Area 2.710 57.91% Impervious Area Tc Length Slope Velocity Capacity Description 6.0 Direct Entry, Subcatchment 4S: Onsite To Bioretention 1 Hydrograph ❑ Runoff 12 F1 1-4-5 ns 11 — Type II 24-hr 10 t1YR Rainfall=3.05" 9 Runoff Area=4.6846 8 Runoff Volume=0.508 of 7 Runoff Depth>1.30" 6 Tc=6.0 min 5 CN=82 4 3 2 1 0 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Time (hours) 2020-05-20 Energy Balance Prepared by Timmons Group Type 1124-hr 1-YR Rainfall=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 0.00 9.25 0.47 0.00 0.01 9.50 0.50 0.00 0.02 9.75 0.52 0.00 0.03 10.00 0.55 0.01 0.05 10.25 0.58 0.01 0.07 10.50 0.62 0.01 0.10 10.75 0.67 0.02 0.14 11.00 0.72 0.03 0.20 11.25 0.78 0.05 0.30 11.50 0.86 0.07 0.45 11.75 1.18 0.19 2.69 12.00 2.02 0.66 11.04 12.25 2.15 0.75 1.64 12.50 2.24 0.81 1.08 12.75 2.30 0.86 0.80 13.00 2.35 0.89 0.67 13.25 2.40 0.92 0.59 13.50 2.44 0.95 0.52 13.75 2.47 0.98 0.46 14.00 2.50 1.00 0.41 14.25 2.53 1.02 0.38 14.50 2.55 1.04 0.36 14.75 2.58 1.06 0.35 15.00 2.60 1.07 0.33 15.25 2.63 1.09 0.31 15.50 2.65 1.11 0.29 15.75 2.67 1.12 0.28 16.00 2.68 1.14 0.26 16.25 2.70 1.15 0.25 16.50 2.72 1.16 0.24 16.75 2.73 1.17 0.23 17.00 2.75 1.19 0.23 17.25 2.77 1.20 0.22 17.50 2.78 1.21 0.21 17.75 2.80 1.22 0.21 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 18.00 2.81 1.23 0.20 18.25 2.82 1.24 0.20 18.50 2.84 1.25 0.19 18.75 2.85 1.26 0.18 19.00 2.86 1.27 0.18 19.25 2.87 1.28 0.17 19.50 2.88 1.29 0.16 19.75 2.89 1.30 0.15 20.00 2.90 1.30 0.15 Printed 6/4/2020 2020-05-20 Energy Balance Prepared by Timmons Group Type 1124-hr 1-YR Rainfall=3.05" Printed 6/4/2020 Summary for Subcatchment 5S: Mite To Bioretention 1 Runoff = 2.37 cfs @ 11.98 hrs, Volume= 0.104 af, Depth> 0.85" 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 0.530 98 Paved parking, HSG B 0.000 61 >75% Grass cover, Good, HSG B 0.940 60 Woods, Fair, HSG B 1.470 74 Weighted Average 0.940 63.95% Pervious Area 0.530 36.05% Impervious Area Tc Length Slope Velocity Capacity Description 6.0 Direct Entry, Subcatchment 5S: Mite To Bioretention 1 Hydrograph ❑ Runoff Type II 24-hr 1-YR Rainfall=3.05" 2 Runoff Area=1.470 ac Runoff Volume=0.104 of (I I Runoff Depth>0.85" Tc=6.0 min 11 I U I CN=74 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Time (hours) 2020-05-20 Energy Balance Prepared by Timmons Group Type 1124-hr 1-YR Rainfall=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 0.01 11.50 0.86 0.01 0.03 11.75 1.18 0.06 0.36 12.00 2.02 0.36 2.31 12.25 2.15 0.42 0.37 12.50 2.24 0.47 0.25 12.75 2.30 0.50 0.19 13.00 2.35 0.53 0.16 13.25 2.40 0.55 0.14 13.50 2.44 0.57 0.12 13.75 2.47 0.59 0.11 14.00 2.50 0.61 0.10 14.25 2.53 0.62 0.09 14.50 2.55 0.64 0.09 14.75 2.58 0.65 0.08 15.00 2.60 0.67 0.08 15.25 2.63 0.68 0.08 15.50 2.65 0.69 0.07 15.75 2.67 0.70 0.07 16.00 2.68 0.71 0.06 16.25 2.70 0.72 0.06 16.50 2.72 0.73 0.06 16.75 2.73 0.74 0.06 17.00 2.75 0.75 0.06 17.25 2.77 0.76 0.05 17.50 2.78 0.77 0.05 17.75 2.80 0.78 0.05 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 18.00 2.81 0.79 0.05 18.25 2.82 0.80 0.05 18.50 2.84 0.81 0.05 18.75 2.85 0.81 0.05 19.00 2.86 0.82 0.04 19.25 2.87 0.83 0.04 19.50 2.88 0.83 0.04 19.75 2.89 0.84 0.04 20.00 2.90 0.85 0.04 Printed 6/4/2020 2020-05-20 Energy Balance Prepared by Timmons Group Type 1124-hr 1-YR Rainfall=3.05" Printed 6/4/2020 Summary for Subcatchment 7S: To Bioretention 2 Runoff = 4.53 cfs @ 11.97 hrs, Volume= 0.202 af, Depth> 1.44" 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 1.040 98 Paved parking, HSG B 0.640 61 >75% Grass cover, Good, HSG B 0.010 60 Woods, Fair, HSG B 1.690 84 Weighted Average 0.650 38.46% Pervious Area 1.040 61.54% Impervious Area Tc Length Slope Velocity Capacity Description 6.0 Direct Entry, Subcatchment 7S: To Bioretention 2 Hydrograph ❑ Runoff Type II 24-hr 4I III 1-YR Rainfall=3.05" Runoff Area=1.690 ac 3. Runoff Volume=0.202af Runoff Depth>1.44" 1 Tc=6.0 min 211 II I I I � CN=84 6 7 8 9 10 11 12 13 14 15 16 17 Time (hours) 2020-05-20 Energy Balance Prepared by Timmons Group Type 1124-hr 1-YR Rainfall=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 0.01 9.00 0.45 0.00 0.01 9.25 0.47 0.00 0.01 9.50 0.50 0.01 0.02 9.75 0.52 0.01 0.02 10.00 0.55 0.01 0.03 10.25 0.58 0.02 0.04 10.50 0.62 0.03 0.05 10.75 0.67 0.04 0.07 11.00 0.72 0.05 0.09 11.25 0.78 0.07 0.14 11.50 0.86 0.10 0.20 11.75 1.18 0.24 1.14 12.00 2.02 0.76 4.34 12.25 2.15 0.85 0.63 12.50 2.24 0.92 0.42 12.75 2.30 0.97 0.31 13.00 2.35 1.00 0.26 13.25 2.40 1.04 0.22 13.50 2.44 1.07 0.20 13.75 2.47 1.09 0.18 14.00 2.50 1.12 0.16 14.25 2.53 1.14 0.15 14.50 2.55 1.16 0.14 14.75 2.58 1.18 0.13 15.00 2.60 1.20 0.13 15.25 2.63 1.21 0.12 15.50 2.65 1.23 0.11 15.75 2.67 1.25 0.10 16.00 2.68 1.26 0.10 16.25 2.70 1.27 0.09 16.50 2.72 1.29 0.09 16.75 2.73 1.30 0.09 17.00 2.75 1.31 0.09 17.25 2.77 1.33 0.08 17.50 2.78 1.34 0.08 17.75 2.80 1.35 0.08 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 18.00 2.81 1.36 0.08 18.25 2.82 1.37 0.07 18.50 2.84 1.38 0.07 18.75 2.85 1.39 0.07 19.00 2.86 1.40 0.07 19.25 2.87 1.41 0.06 19.50 2.88 1.42 0.06 19.75 2.89 1.43 0.06 20.00 2.90 1.44 0.06 Printed 6/4/2020 2020-05-20 Energy Balance Prepared by Timmons Group Type 1124-hr 1-YR Rainfall=3.05" Summary for Pond 6P: BIORETENTION 1 Printed 6/4/2020 Inflow Area = 6.150 ac, 52.68% Impervious, Inflow Depth > 1.19" for 1-YR event Inflow = 13.92 cfs @ 11.98 hrs, Volume= 0.611 of Outflow = 1.88 cfs @ 12.30 hrs, Volume= 0.301 af, Atten= 86%, Lag= 19.6 min Primary = 1.88 cfs @ 12.30 hrs, Volume= 0.301 of Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Peak Elev= 415.10' @ 12.30 hrs Surf.Area= 5,312 sf Storage= 13,947 cf Plug -Flow detention time= 173.3 min calculated for 0.301 of (49% of inflow) Center -of -Mass det. time= 89.1 min ( 884.1 - 795.0 ) Volume Invert Avail.Storage Storage Description #1 407.00' 19,325 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Voids Inc.Store Cum.Store (feet) (sq-ft) M (cubic -feet) (cubic -feet) 407.00 3,808 0.0 0 0 411.00 3,808 40.0 6,093 6,093 414.00 3,808 25.0 2,856 8,949 415.00 5,174 100.0 4,491 13,440 416.00 6,596 100.0 5,885 19,325 Device Routing Invert Outlet Devices #1 Primary 409.56' 36.0" Round HDPE_Round 30" L= 37.1' RCP, sq.cut end projecting, Ke= 0.500 Inlet / Outlet Invert= 409.56' / 409.00' S= 0.0151 T Cc= 0.900 n= 0.010 PVC, smooth interior, Flow Area= 7.07 sf #2 Device 1 415.00' 36.0" Horiz. Orifice/Grate X 2.00 C= 0.600 Limited to weir flow at low heads Primary OutFlow Max=1.85 cfs @ 12.30 hrs HW=415.10' (Free Discharge) t1=HDPE_Round 30" (Passes 1.85 cfs of 68.38 cfs potential flow) t2=04ice/Grate (Weir Controls 1.85 cfs @ 1.02 fps) 2020-05-20 Energy Balance Prepared by Timmons Group Pond 6P: BIORETENTION 1 Hydrograph Type lI 24-hr 1-YR Rainfall=3.05" Printed 6/4/2020 Arm Elev=415.10'- ------■Peak E� E ------�MEN --------------------------------------- -- 0Y 5 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 2020-05-20 Energy Balance Prepared by Timmons Group Pond 6P: BIORETENTION 1 Stage -Area -Storage Type 1124-hr 1-YR Rainfall=3.05" 0 2,000 4,000 6,000 8,000 10,000 12,000 14,000 16,000 18,000 Storage (cubic -feet) Printed 6/4/2020 ❑ Surface ❑ Storage 2020-05-20 Energy Balance Prepared by Timmons Group Type 1124-hr 1-YR Rainfall=3.05" Hydrograph for Pond 6P: BIORETENTION 1 Time Inflow Storage Elevation Primary (hours) (cfs) (cubic -feet) (feet) (cfs) 5.00 0.00 0 407.00 0.00 5.50 0.00 0 407.00 0.00 6.00 0.00 0 407.00 0.00 6.50 0.00 0 407.00 0.00 7.00 0.00 0 407.00 0.00 7.50 0.00 0 407.00 0.00 8.00 0.00 0 407.00 0.00 8.50 0.00 0 407.00 0.00 9.00 0.00 0 407.00 0.00 9.50 0.02 18 407.01 0.00 10.00 0.05 77 407.05 0.00 10.50 0.10 205 407.13 0.00 11.00 0.20 462 407.30 0.00 11.50 0.48 1,034 407.68 0.00 12.00 13.34 9,744 414.20 0.00 12.50 1.33 13,853 415.08 1.51 13.00 0.83 13,696 415.05 0.88 13.50 0.64 13,642 415.04 0.66 14.00 0.51 13,608 415.03 0.53 14.50 0.45 13,591 415.03 0.46 15.00 0.41 13,580 415.03 0.41 15.50 0.36 13,569 415.02 0.37 16.00 0.32 13,558 415.02 0.33 16.50 0.30 13,552 415.02 0.30 17.00 0.28 13,548 415.02 0.29 17.50 0.27 13,544 415.02 0.27 18.00 0.25 13,540 415.02 0.25 18.50 0.24 13,536 415.02 0.24 19.00 0.22 13,532 415.02 0.22 19.50 0.20 13,527 415.02 0.20 20.00 0.19 13,523 415.02 0.19 Printed 6/4/2020 2020-05-20 Energy Balance Prepared by Timmons Group Elevation Primary (feet) (cfs) 407.00 0.00 407.10 0.00 407.20 0.00 407.30 0.00 407.40 0.00 407.50 0.00 407.60 0.00 407.70 0.00 407.80 0.00 407.90 0.00 408.00 0.00 408.10 0.00 408.20 0.00 408.30 0.00 408.40 0.00 408.50 0.00 408.60 0.00 408.70 0.00 408.80 0.00 408.90 0.00 409.00 0.00 409.10 0.00 409.20 0.00 409.30 0.00 409.40 0.00 409.50 0.00 409.60 0.00 409.70 0.00 409.80 0.00 409.90 0.00 410.00 0.00 410.10 0.00 410.20 0.00 410.30 0.00 410.40 0.00 410.50 0.00 410.60 0.00 410.70 0.00 410.80 0.00 410.90 0.00 411.00 0.00 411.10 0.00 411.20 0.00 411.30 0.00 411.40 0.00 411.50 0.00 411.60 0.00 411.70 0.00 411.80 0.00 411.90 0.00 412.00 0.00 412.10 0.00 Type 1124-hr 1-YR Rainfall=3.05" Stage -Discharge for Pond 6P: BIORETENTION 1 Elevation Primary (feet) (cfs) 412.20 0.00 412.30 0.00 412.40 0.00 412.50 0.00 412.60 0.00 412.70 0.00 412.80 0.00 412.90 0.00 413.00 0.00 413.10 0.00 413.20 0.00 413.30 0.00 413.40 0.00 413.50 0.00 413.60 0.00 413.70 0.00 413.80 0.00 413.90 0.00 414.00 0.00 414.10 0.00 414.20 0.00 414.30 0.00 414.40 0.00 414.50 0.00 414.60 0.00 414.70 0.00 414.80 0.00 414.90 0.00 415.00 0.00 415.10 1.95 415.20 5.51 415.30 10.13 415.40 15.59 415.50 21.79 415.60 28.65 415.70 36.10 415.80 44.10 415.90 52.63 416.00 61.64 Printed 6/4/2020 2020-05-20 Energy Balance Prepared by Timmons Group Type 1124-hr 1-YR Rainfall=3.05" Stage -Area -Storage for Pond 6P: BIORETENTION 1 Elevation Surface Storage (feet) (sq-ft) (cubic -feet) 407.00 3,808 0 407.10 3,808 152 407.20 3,808 305 407.30 3,808 457 407.40 3,808 609 407.50 3,808 762 407.60 3,808 914 407.70 3,808 1,066 407.80 3,808 1,219 407.90 3,808 1,371 408.00 3,808 1,523 408.10 3,808 1,676 408.20 3,808 1,828 408.30 3,808 1,980 408.40 3,808 2,132 408.50 3,808 2,285 408.60 3,808 2,437 408.70 3,808 2,589 408.80 3,808 2,742 408.90 3,808 2,894 409.00 3,808 3,046 409.10 3,808 3,199 409.20 3,808 3,351 409.30 3,808 3,503 409.40 3,808 3,656 409.50 3,808 3,808 409.60 3,808 3,960 409.70 3,808 4,113 409.80 3,808 4,265 409.90 3,808 4,417 410.00 3,808 4,570 410.10 3,808 4,722 410.20 3,808 4,874 410.30 3,808 5,027 410.40 3,808 5,179 410.50 3,808 5,331 410.60 3,808 5,484 410.70 3,808 5,636 410.80 3,808 5,788 410.90 3,808 5,940 411.00 3,808 6,093 411.10 3,808 6,188 411.20 3,808 6,283 411.30 3,808 6,378 411.40 3,808 6,474 411.50 3,808 6,569 411.60 3,808 6,664 411.70 3,808 6,759 411.80 3,808 6,854 411.90 3,808 6,950 412.00 3,808 7,045 412.10 3,808 7,140 Elevation Surface Storage (feet) (sq-ft) (cubic -feet) 412.20 3,808 7,235 412.30 3,808 7,330 412.40 3,808 7,426 412.50 3,808 7,521 412.60 3,808 7,616 412.70 3,808 7,711 412.80 3,808 7,806 412.90 3,808 7,902 413.00 3,808 7,997 413.10 3,808 8,092 413.20 3,808 8,187 413.30 3,808 8,282 413.40 3,808 8,378 413.50 3,808 8,473 413.60 3,808 8,568 413.70 3,808 8,663 413.80 3,808 8,758 413.90 3,808 8,854 414.00 3,808 8,949 414.10 3,945 9,336 414.20 4,081 9,738 414.30 4,218 10,153 414.40 4,354 10,581 414.50 4,491 11,024 414.60 4,628 11,479 414.70 4,764 11,949 414.80 4,901 12,432 414.90 5,037 12,929 415.00 5,174 13,440 415.10 5,316 13,964 415.20 5,458 14,503 415.30 5,601 15,056 415.40 5,743 15,623 415.50 5,885 16,205 415.60 6,027 16,800 415.70 6,169 17,410 415.80 6,312 18,034 415.90 6,454 18,672 416.00 6,596 19,325 Printed 6/4/2020 2020-05-20 Energy Balance Prepared by Timmons Group Type 1124-hr 1-YR Rainfall=3.05" Summary for Pond 8P: BIORETENTION 2 Printed 6/4/2020 Inflow Area = 1.690 ac, 61.54% Impervious, Inflow Depth > 1.44" for 1-YR event Inflow = 4.53 cfs @ 11.97 hrs, Volume= 0.202 of Outflow = 0.32 cfs @ 12.72 hrs, Volume= 0.075 af, Atten= 93%, Lag= 44.6 min Primary = 0.32 cfs @ 12.72 hrs, Volume= 0.075 of Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Peak Elev= 431.95' @ 12.72 hrs Surf.Area= 2,020 sf Storage= 5,603 cf Plug -Flow detention time= 214.6 min calculated for 0.075 of (37% of inflow) Center -of -Mass det. time= 129.1 min ( 915.7 - 786.7 ) 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' 24.0" Round HDPE_Round 24" 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= 3.14 sf #2 Device 1 431.91' 36.0" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads Primary OutFlow Max=0.23 cfs @ 12.72 hrs HW=431.95' (Free Discharge) L1=HDPE_Round 24" (Passes 0.23 cfs of 38.62 cfs potential flow) t2=Orifice/Grate (Weir Controls 0.23 cfs @ 0.64 fps) 2020-05-20 Energy Balance Prepared by Timmons Group W M® Type 1124-hr 1-YR Rainfall=3.05" Printed 6/4/2020 Pond 8P: BIORETENTION 2 Hydrograph I Peak Elev=431.95 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 2020-05-20 Energy Balance Prepared by Timmons Group Pond 8P: BIORETENTION 2 Stage -Area -Storage Surface/HorizontaiMefted Area (sq-ft) Storage (cubic -feet) Type 1124-hr 1-YR Rainfall=3.05" Printed 6/4/2020 ❑ Surface ❑ Storage 2020-05-20 Energy Balance Prepared by Timmons Group Type 1124-hr 1-YR Rainfall=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 1 423.91 0.00 9.00 0.01 11 423.93 0.00 9.50 0.02 35 423.97 0.00 10.00 0.03 76 424.03 0.00 10.50 0.05 148 424.14 0.00 11.00 0.09 276 424.35 0.00 11.50 0.20 528 424.74 0.00 12.00 4.34 3,547 430.45 0.00 12.50 0.42 5,511 431.90 0.00 13.00 0.26 5,592 431.94 0.27 13.50 0.20 5,576 431.93 0.20 14.00 0.16 5,566 431.93 0.16 14.50 0.14 5,560 431.93 0.14 15.00 0.13 5,557 431.93 0.13 15.50 0.11 5,554 431.92 0.11 16.00 0.10 5,550 431.92 0.10 16.50 0.09 5,548 431.92 0.09 17.00 0.09 5,547 431.92 0.09 17.50 0.08 5,546 431.92 0.08 18.00 0.08 5,545 431.92 0.08 18.50 0.07 5,544 431.92 0.07 19.00 0.07 5,542 431.92 0.07 19.50 0.06 5,541 431.92 0.06 20.00 0.06 5,540 431.92 0.06 Printed 6/4/2020 2020-05-20 Energy Balance Prepared by Timmons Group 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 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 25.44 432.85 28.09 432.91 30.82 432.97 33.63 433.03 36.02 433.09 36.97 433.15 37.90 433.21 38.81 Printed 6/4/2020 Elevation Primary (feet) (cfs) 433.27 39.69 433.33 40.56 433.39 41.41 433.45 42.24 433.51 43.00 433.57 43.16 433.63 43.32 433.69 43.47 433.75 43.63 433.81 43.79 433.87 43.95 433.93 44.10 433.99 ".26 2020-05-20 Energy Balance Prepared by Timmons Group Type 1124-hr 1-YR Rainfall=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 6/4/2020 2020-05-20 Energy Balance Prepared by Timmons Group Type/1 24-hr 10-YR Rainfall=5.58" Printed 6/4/2020 Summary for Subcatchment 4S: Onsite To Bioretention 1 Runoff = 28.38 cfs @ 11.97 hrs, Volume= 1.309 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 2.710 98 Paved parking, HSG B 1.510 61 >75% Grass cover, Good, HSG B 0.460 60 Woods, Fair, HSG B 4.680 82 Weighted Average 1.970 42.09% Pervious Area 2.710 57.91% Impervious Area Tc Length Slope Velocity Capacity Description 0 7 Direct Entry, Subcatchment 4S: Onsite To Bioretention 1 Hydrograph 1 12 13 Time (hours) Type 11 24-hr 10-YR Rainfall=5.58" Runoff Area=4.680 ac Runoff. Volume=1.309 of Runoff Depth>3.36" Tc=6.0 min 19 20 ❑ Runoff 2020-05-20 Energy Balance Prepared by Timmons Group Type/1 24-hr 10-YR Rainfall=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 0.00 6.25 0.47 0.00 0.01 6.50 0.50 0.00 0.02 6.75 0.52 0.00 0.03 7.00 0.55 0.01 0.05 7.25 0.58 0.01 0.06 7.50 0.61 0.01 0.07 7.75 0.64 0.02 0.09 8.00 0.67 0.02 0.10 8.25 0.70 0.03 0.12 8.50 0.74 0.04 0.15 8.75 0.78 0.05 0.18 9.00 0.82 0.06 0.22 9.25 0.86 0.07 0.24 9.50 0.91 0.08 0.26 9.75 0.96 0.10 0.31 10.00 1.01 0.12 0.37 10.25 1.07 0.14 0.45 10.50 1.14 0.17 0.54 10.75 1.22 0.20 0.68 11.00 1.31 0.25 0.86 11.25 1.43 0.31 1.17 11.50 1.58 0.39 1.61 11.75 2.16 0.76 8.26 12.00 3.70 1.95 26.80 12.25 3.94 2.15 3.76 12.50 4.10 2.29 2.44 12.75 4.21 2.39 1.79 13.00 4.31 2.47 1.50 13.25 4.39 2.54 1.30 13.50 4.46 2.60 1.14 13.75 4.52 2.65 1.01 14.00 4.58 2.70 0.90 14.25 4.63 2.75 0.83 14.50 4.67 2.79 0.79 14.75 4.72 2.83 0.75 15.00 4.76 2.87 0.72 15.25 4.80 2.90 0.68 15.50 4.84 2.94 0.64 15.75 4.88 2.97 0.60 16.00 4.91 3.00 0.55 16.25 4.94 3.03 0.53 16.50 4.97 3.05 0.52 16.75 5.00 3.08 0.50 17.00 5.03 3.11 0.49 17.25 5.06 3.13 0.47 17.50 5.09 3.16 0.46 17.75 5.11 3.18 0.45 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 18.00 5.14 3.20 0.43 18.25 5.16 3.23 0.42 18.50 5.19 3.25 0.40 18.75 5.21 3.27 0.39 19.00 5.23 3.29 0.37 19.25 5.25 3.31 0.36 19.50 5.27 3.33 0.34 19.75 5.29 3.34 0.33 20.00 5.31 3.36 0.31 Printed 6/4/2020 2020-05-20 Energy Balance Prepared by Timmons Group Type/1 24-hr 10-YR Rainfall=5.58" Printed 6/4/2020 Summary for Subcatchment 5S: Mite To Bioretention 1 Runoff = 7.17 cfs @ 11.97 hrs, Volume= 0.320 af, Depth> 2.61" 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 0.530 98 Paved parking, HSG B 0.000 61 >75% Grass cover, Good, HSG B 0.940 60 Woods, Fair, HSG B 1.470 74 Weighted Average 0.940 63.95% Pervious Area 0.530 36.05% Impervious Area Tc Length Slope Velocity Capacity Description 6.0 Direct Entry, Subcatchment 5S: Mite To Bioretention 1 Hydrograph ❑ Runoff 7 ' Type II 24-hr - 10-YR Rainfall=5.58" 6 Runoff Area=1.470 ac 5 Runoff Volume=0.320 of - - Runoff Depth>2.61" 4- Tc=6.0 min 3 CN4 6 7 8 9 10 11 12 13 14 15 16 17 Time (hours) 2020-05-20 Energy Balance Prepared by Timmons Group Type/1 24-hr 10-YR Rainfall=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 0.01 9.00 0.82 0.00 0.01 9.25 0.86 0.01 0.02 9.50 0.91 0.01 0.03 9.75 0.96 0.02 0.03 10.00 1.01 0.02 0.05 10.25 1.07 0.03 0.06 10.50 1.14 0.05 0.08 10.75 1.22 0.07 0.11 11.00 1.31 0.09 0.15 11.25 1.43 0.12 0.21 11.50 1.58 0.17 0.31 11.75 2.16 0.43 1.79 12.00 3.70 1.38 6.88 12.25 3.94 1.55 1.01 12.50 4.10 1.67 0.66 12.75 4.21 1.75 0.49 13.00 4.31 1.83 0.41 13.25 4.39 1.89 0.36 13.50 4.46 1.94 0.31 13.75 4.52 1.99 0.28 14.00 4.58 2.03 0.25 14.25 4.63 2.07 0.23 14.50 4.67 2.11 0.22 14.75 4.72 2.14 0.21 15.00 4.76 2.18 0.20 15.25 4.80 2.21 0.19 15.50 4.84 2.24 0.18 15.75 4.88 2.27 0.17 16.00 4.91 2.29 0.15 16.25 4.94 2.32 0.15 16.50 4.97 2.34 0.14 16.75 5.00 2.37 0.14 17.00 5.03 2.39 0.14 17.25 5.06 2.41 0.13 17.50 5.09 2.43 0.13 17.75 5.11 2.46 0.13 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 18.00 5.14 2.48 0.12 18.25 5.16 2.50 0.12 18.50 5.19 2.51 0.11 18.75 5.21 2.53 0.11 19.00 5.23 2.55 0.11 19.25 5.25 2.57 0.10 19.50 5.27 2.58 0.10 19.75 5.29 2.60 0.09 20.00 5.31 2.62 0.09 Printed 6/4/2020 2020-05-20 Energy Balance Prepared by Timmons Group Type/1 24-hr 10-YR Rainfall=5.58" Printed 6/4/2020 Summary for Subcatchment 7S: To Bioretention 2 Runoff = 10.72 cfs @ 11.97 hrs, Volume= 0.500 af, Depth> 3.55" 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 1.040 98 Paved parking, HSG B 0.640 61 >75% Grass cover, Good, HSG B 0.010 60 Woods, Fair, HSG B 1.690 84 Weighted Average 0.650 38.46% Pervious Area 1.040 61.54% Impervious Area Tc Length Slope Velocity Capacity Description 0 Direct Entry, Subcatchment 7S: To Bioretention 2 Hydrograph � • ' i Runoff • 0 t af Runoff ' • • min Oi -. M�Mwl -...-, MMMMMI.0 ■ ...-_, ■.-MMM . i� i7 6 7 8 9 1,6.. ',' 1,2 ....1�3....1,4.. 15....1,6.. 1,7 18 19....io Time (hours) ❑ Runoff 2020-05-20 Energy Balance Prepared by Timmons Group Type/1 24-hr 10-YR Rainfall=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 0.01 6.00 0.45 0.00 0.01 6.25 0.47 0.00 0.01 6.50 0.50 0.01 0.02 6.75 0.52 0.01 0.02 7.00 0.55 0.01 0.03 7.25 0.58 0.02 0.03 7.50 0.61 0.02 0.04 7.75 0.64 0.03 0.04 8.00 0.67 0.04 0.05 8.25 0.70 0.05 0.06 8.50 0.74 0.06 0.07 8.75 0.78 0.07 0.08 9.00 0.82 0.08 0.10 9.25 0.86 0.10 0.11 9.50 0.91 0.11 0.12 9.75 0.96 0.13 0.13 10.00 1.01 0.16 0.16 10.25 1.07 0.18 0.19 10.50 1.14 0.22 0.23 10.75 1.22 0.26 0.28 11.00 1.31 0.31 0.35 11.25 1.43 0.37 0.47 11.50 1.58 0.46 0.64 11.75 2.16 0.86 3.22 12.00 3.70 2.11 10.09 12.25 3.94 2.32 1.40 12.50 4.10 2.46 0.91 12.75 4.21 2.56 0.67 13.00 4.31 2.64 0.56 13.25 4.39 2.72 0.48 13.50 4.46 2.78 0.42 13.75 4.52 2.84 0.38 14.00 4.58 2.88 0.33 14.25 4.63 2.93 0.31 14.50 4.67 2.97 0.29 14.75 4.72 3.01 0.28 15.00 4.76 3.05 0.26 15.25 4.80 3.09 0.25 15.50 4.84 3.13 0.23 15.75 4.88 3.16 0.22 16.00 4.91 3.19 0.21 16.25 4.94 3.22 0.20 16.50 4.97 3.25 0.19 16.75 5.00 3.27 0.19 17.00 5.03 3.30 0.18 17.25 5.06 3.33 0.18 17.50 5.09 3.35 0.17 17.75 5.11 3.37 0.16 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 18.00 5.14 3.40 0.16 18.25 5.16 3.42 0.15 18.50 5.19 3.44 0.15 18.75 5.21 3.46 0.14 19.00 5.23 3.48 0.14 19.25 5.25 3.50 0.13 19.50 5.27 3.52 0.13 19.75 5.29 3.54 0.12 20.00 5.31 3.56 0.12 Printed 6/4/2020 2020-05-20 Energy Balance Prepared by Timmons Group Type/1 24-hr 10-YR Rainfall=5.58" Summary for Pond 6P: BIORETENTION 1 Printed 6/4/2020 Inflow Area = 6.150 ac, 52.68% Impervious, Inflow Depth > 3.18" for 10-YR event Inflow = 35.54 cfs @ 11.97 hrs, Volume= 1.628 of Outflow = 34.62 cfs @ 11.99 hrs, Volume= 1.317 af, Atten= 3%, Lag= 1.4 min Primary = 34.62 cfs @ 11.99 hrs, Volume= 1.317 of Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Peak Elev= 415.68' @ 11.99 hrs Surf.Area= 6,141 sf Storage= 17,288 cf Plug -Flow detention time= 82.3 min calculated for 1.317 of (81% of inflow) Center -of -Mass det. time= 29.0 min ( 803.1 - 774.2 ) Volume Invert Avail.Storage Storage Description #1 407.00' 19,325 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Voids Inc.Store Cum.Store (feet) (sq-ft) M (cubic -feet) (cubic -feet) 407.00 3,808 0.0 0 0 411.00 3,808 40.0 6,093 6,093 414.00 3,808 25.0 2,856 8,949 415.00 5,174 100.0 4,491 13,440 416.00 6,596 100.0 5,885 19,325 Device Routing Invert Outlet Devices #1 Primary 409.56' 36.0" Round HDPE_Round 30" L= 37.1' RCP, sq.cut end projecting, Ke= 0.500 Inlet / Outlet Invert= 409.56' / 409.00' S= 0.0151 T Cc= 0.900 n= 0.010 PVC, smooth interior, Flow Area= 7.07 sf #2 Device 1 415.00' 36.0" Horiz. Orifice/Grate X 2.00 C= 0.600 Limited to weir flow at low heads Primary OutFlow Max=33.79 cfs @ 11.99 hrs HW=415.67' (Free Discharge) t1=HDPE_Round 30" (Passes 33.79 cfs of 73.07 cfs potential flow) t2=04ice/Grate (Weir Controls 33.79 cfs @ 2.68 fps) 2020-05-20 Energy Balance Type/1 24-hr 10-YR Rainfall=5.58" Prepared by Timmons Group Printed 6/4/2020 HydroCADO 10.00-20 s/n 10074 © 2017 HydroCAD Software Solutions LLC Paae 27 Pond 6P: BIORETENTION 1 Hydrograph 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Time )hours) Pond 6P: BIORETENTION 1 Stage -Discharge 416 415 414 413 a a `. 412 410 409 408 407 0 5 10 15 20 25 30 35 40 45 50 55 60 Discharge (cfs) ■ Inflow ■ Primary ❑ Primary 2020-05-20 Energy Balance Prepared by Timmons Group Type // 24-hr 10-YR Rainfall=5.58" Pond 6P: BIORETENTION 1 Stage -Area -Storage 0 2,000 4,000 6,000 8,000 10,000 12,000 14,000 16,000 18,000 Storage (cubic -feet) Printed 6/4/2020 ❑ Surface ❑ Storage 2020-05-20 Energy Balance Prepared by Timmons Group Type/1 24-hr 10-YR Rainfall=5.58" Hydrograph for Pond 6P: BIORETENTION 1 Time Inflow Storage Elevation Primary (hours) (cfs) (cubic -feet) (feet) (cfs) 5.00 0.00 0 407.00 0.00 5.50 0.00 0 407.00 0.00 6.00 0.00 0 407.00 0.00 6.50 0.02 19 407.01 0.00 7.00 0.05 79 407.05 0.00 7.50 0.07 184 407.12 0.00 8.00 0.10 338 407.22 0.00 8.50 0.15 558 407.37 0.00 9.00 0.23 900 407.59 0.00 9.50 0.29 1,374 407.90 0.00 10.00 0.41 1,993 408.31 0.00 10.50 0.62 2,913 408.91 0.00 11.00 1.00 4,349 409.86 0.00 11.50 1.93 6,886 411.83 0.00 12.00 33.67 17,275 415.68 34.46 12.50 3.10 14,183 415.14 3.37 13.00 1.91 13,969 415.10 1.98 13.50 1.46 13,855 415.08 1.51 14.00 1.15 13,774 415.06 1.19 14.50 1.01 13,734 415.06 1.03 15.00 0.91 13,709 415.05 0.93 15.50 0.81 13,683 415.05 0.83 16.00 0.71 13,658 415.04 0.72 16.50 0.66 13,643 415.04 0.67 17.00 0.63 13,634 415.04 0.63 17.50 0.59 13,625 415.04 0.59 18.00 0.55 13,616 415.03 0.56 18.50 0.52 13,607 415.03 0.52 19.00 0.48 13,597 415.03 0.48 19.50 0.44 13,588 415.03 0.45 20.00 0.40 13,579 415.03 0.41 Printed 6/4/2020 2020-05-20 Energy Balance Prepared by Timmons Group Elevation Primary (feet) (cfs) 407.00 0.00 407.10 0.00 407.20 0.00 407.30 0.00 407.40 0.00 407.50 0.00 407.60 0.00 407.70 0.00 407.80 0.00 407.90 0.00 408.00 0.00 408.10 0.00 408.20 0.00 408.30 0.00 408.40 0.00 408.50 0.00 408.60 0.00 408.70 0.00 408.80 0.00 408.90 0.00 409.00 0.00 409.10 0.00 409.20 0.00 409.30 0.00 409.40 0.00 409.50 0.00 409.60 0.00 409.70 0.00 409.80 0.00 409.90 0.00 410.00 0.00 410.10 0.00 410.20 0.00 410.30 0.00 410.40 0.00 410.50 0.00 410.60 0.00 410.70 0.00 410.80 0.00 410.90 0.00 411.00 0.00 411.10 0.00 411.20 0.00 411.30 0.00 411.40 0.00 411.50 0.00 411.60 0.00 411.70 0.00 411.80 0.00 411.90 0.00 412.00 0.00 412.10 0.00 Type/1 24-hr 10-YR Rainfall=5.58" Stage -Discharge for Pond 6P: BIORETENTION 1 Elevation Primary (feet) (cfs) 412.20 0.00 412.30 0.00 412.40 0.00 412.50 0.00 412.60 0.00 412.70 0.00 412.80 0.00 412.90 0.00 413.00 0.00 413.10 0.00 413.20 0.00 413.30 0.00 413.40 0.00 413.50 0.00 413.60 0.00 413.70 0.00 413.80 0.00 413.90 0.00 414.00 0.00 414.10 0.00 414.20 0.00 414.30 0.00 414.40 0.00 414.50 0.00 414.60 0.00 414.70 0.00 414.80 0.00 414.90 0.00 415.00 0.00 415.10 1.95 415.20 5.51 415.30 10.13 415.40 15.59 415.50 21.79 415.60 28.65 415.70 36.10 415.80 44.10 415.90 52.63 416.00 61.64 Printed 6/4/2020 2020-05-20 Energy Balance Prepared by Timmons Group Type/1 24-hr 10-YR Rainfall=5.58" Stage -Area -Storage for Pond 6P: BIORETENTION 1 Elevation Surface Storage (feet) (sq-ft) (cubic -feet) 407.00 3,808 0 407.10 3,808 152 407.20 3,808 305 407.30 3,808 457 407.40 3,808 609 407.50 3,808 762 407.60 3,808 914 407.70 3,808 1,066 407.80 3,808 1,219 407.90 3,808 1,371 408.00 3,808 1,523 408.10 3,808 1,676 408.20 3,808 1,828 408.30 3,808 1,980 408.40 3,808 2,132 408.50 3,808 2,285 408.60 3,808 2,437 408.70 3,808 2,589 408.80 3,808 2,742 408.90 3,808 2,894 409.00 3,808 3,046 409.10 3,808 3,199 409.20 3,808 3,351 409.30 3,808 3,503 409.40 3,808 3,656 409.50 3,808 3,808 409.60 3,808 3,960 409.70 3,808 4,113 409.80 3,808 4,265 409.90 3,808 4,417 410.00 3,808 4,570 410.10 3,808 4,722 410.20 3,808 4,874 410.30 3,808 5,027 410.40 3,808 5,179 410.50 3,808 5,331 410.60 3,808 5,484 410.70 3,808 5,636 410.80 3,808 5,788 410.90 3,808 5,940 411.00 3,808 6,093 411.10 3,808 6,188 411.20 3,808 6,283 411.30 3,808 6,378 411.40 3,808 6,474 411.50 3,808 6,569 411.60 3,808 6,664 411.70 3,808 6,759 411.80 3,808 6,854 411.90 3,808 6,950 412.00 3,808 7,045 412.10 3,808 7,140 Elevation Surface Storage (feet) (sq-ft) (cubic -feet) 412.20 3,808 7,235 412.30 3,808 7,330 412.40 3,808 7,426 412.50 3,808 7,521 412.60 3,808 7,616 412.70 3,808 7,711 412.80 3,808 7,806 412.90 3,808 7,902 413.00 3,808 7,997 413.10 3,808 8,092 413.20 3,808 8,187 413.30 3,808 8,282 413.40 3,808 8,378 413.50 3,808 8,473 413.60 3,808 8,568 413.70 3,808 8,663 413.80 3,808 8,758 413.90 3,808 8,854 414.00 3,808 8,949 414.10 3,945 9,336 414.20 4,081 9,738 414.30 4,218 10,153 414.40 4,354 10,581 414.50 4,491 11,024 414.60 4,628 11,479 414.70 4,764 11,949 414.80 4,901 12,432 414.90 5,037 12,929 415.00 5,174 13,440 415.10 5,316 13,964 415.20 5,458 14,503 415.30 5,601 15,056 415.40 5,743 15,623 415.50 5,885 16,205 415.60 6,027 16,800 415.70 6,169 17,410 415.80 6,312 18,034 415.90 6,454 18,672 416.00 6,596 19,325 Printed 6/4/2020 2020-05-20 Energy Balance Prepared by Timmons Group Type/1 24-hr 10-YR Rainfall=5.58" Summary for Pond 8P: BIORETENTION 2 Printed 6/4/2020 Inflow Area = 1.690 ac, 61.54% Impervious, Inflow Depth > 3.55" for 10-YR event Inflow = 10.72 cfs @ 11.97 hrs, Volume= 0.500 of Outflow = 10.53 cfs @ 11.99 hrs, Volume= 0.373 af, Atten= 2%, Lag= 1.2 min Primary = 10.53 cfs @ 11.99 hrs, Volume= 0.373 of Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Peak Elev= 432.40' @ 11.99 hrs Surf.Area= 2,164 sf Storage= 6,546 cf Plug -Flow detention time= 99.9 min calculated for 0.373 of (75% of inflow) Center -of -Mass det. time= 38.6 min ( 805.0 - 766.4 ) 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' 24.0" Round HDPE_Round 24" 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= 3.14 sf #2 Device 1 431.91' 36.0" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads Primary OutFlow Max=10.20 cfs @ 11.99 hrs HW=432.39' (Free Discharge) L1=HDPE_Round 24" (Passes 10.20 cfs of 39.90 cfs potential flow) t2=Orifice/Grate (Weir Controls 10.20 cfs @ 2.26 fps) 2020-05-20 Energy Balance Prepared by Timmons Group i c 0 m m W Type 1124-hr 10-YR Rainfall=5.58" Pond 8P: BIORETENTION 2 Hydrograph Time (hours) Pond 8P: BIORETENTION 2 Stage -Discharge Discharge (cfs) Printed 6/4/2020 ■ Inflow ■ Primary ® Primary 2020-05-20 Energy Balance Prepared by Timmons Group Type // 24-hr 10-YR Rainfall=5.58" Pond 8P: BIORETENTION 2 Stage -Area -Storage Surface/HorizontaiMefted Area (sq-ft) Storage (cubic -feet) Printed 6/4/2020 ❑ Surface ❑ Storage 2020-05-20 Energy Balance Prepared by Timmons Group Type/1 24-hr 10-YR Rainfall=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 0.01 10 423.93 0.00 6.50 0.02 35 423.97 0.00 7.00 0.03 77 424.03 0.00 7.50 0.04 137 424.13 0.00 8.00 0.05 216 424.25 0.00 8.50 0.07 322 424.42 0.00 9.00 0.10 472 424.65 0.00 9.50 0.12 666 424.96 0.00 10.00 0.16 905 425.34 0.00 10.50 0.23 1,245 425.87 0.00 11.00 0.35 1,753 426.67 0.00 11.50 0.64 2,616 428.10 0.00 12.00 10.09 6,538 432.39 10.41 12.50 0.91 5,725 432.01 0.97 13.00 0.56 5,668 431.98 0.58 13.50 0.42 5,633 431.96 0.44 14.00 0.33 5,610 431.95 0.34 14.50 0.29 5,599 431.95 0.30 15.00 0.26 5,592 431.94 0.27 15.50 0.23 5,584 431.94 0.24 16.00 0.21 5,577 431.94 0.21 16.50 0.19 5,573 431.93 0.19 17.00 0.18 5,570 431.93 0.18 17.50 0.17 5,568 431.93 0.17 18.00 0.16 5,565 431.93 0.16 18.50 0.15 5,563 431.93 0.15 19.00 0.14 5,560 431.93 0.14 19.50 0.13 5,557 431.93 0.13 20.00 0.12 5,555 431.92 0.12 Printed 6/4/2020 2020-05-20 Energy Balance Prepared by Timmons Group 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/1 24-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 25.44 432.85 28.09 432.91 30.82 432.97 33.63 433.03 36.02 433.09 36.97 433.15 37.90 433.21 38.81 Printed 6/4/2020 Elevation Primary (feet) (cfs) 433.27 39.69 433.33 40.56 433.39 41.41 433.45 42.24 433.51 43.00 433.57 43.16 433.63 43.32 433.69 43.47 433.75 43.63 433.81 43.79 433.87 43.95 433.93 44.10 433.99 ".26 2020-05-20 Energy Balance Prepared by Timmons Group Type/1 24-hr 10-YR Rainfall=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 6/4/2020 2020-05-20 Energy Balance Prepared by Timmons Group Type II 24-hr 100-YR Rainfall=9.16" Printed 6/4/2020 Summary for Subcatchment 4S: Onsite To Bioretention 1 Runoff = 52.96 cfs @ 11.96 hrs, Volume= 2.547 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 2.710 98 Paved parking, HSG B 1.510 61 >75% Grass cover, Good, HSG B 0.460 60 Woods, Fair, HSG B 4.680 82 Weighted Average 1.970 42.09% Pervious Area 2.710 57.91% Impervious Area Tc Length Slope Velocity Capacity Description 6.0 Direct Entry, Subcatchment 4S: Onsite To Bioretention 1 Hydrograph ❑ Runoff 55 1 sz 9s cts -- --- --� Type II 24-hr 50 45'. 100-YR Rainfall=9.16" 40 Runoff Area=4.680 ac 35 Runoff Volume=2.547 of 3 30 Runoff Depth>6.53" 25 Tc=6.0 min 20 CN=82 0 " 5 0 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Time (hours) 2020-05-20 Energy Balance Prepared by Timmons Group 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 0.07 5.25 0.61 0.01 0.09 5.50 0.65 0.02 0.12 5.75 0.69 0.03 0.14 6.00 0.73 0.03 0.16 6.25 0.77 0.04 0.19 6.50 0.82 0.06 0.21 6.75 0.86 0.07 0.24 7.00 0.91 0.08 0.27 7.25 0.95 0.10 0.29 7.50 1.00 0.11 0.32 7.75 1.05 0.13 0.35 8.00 1.10 0.15 0.38 8.25 1.15 0.17 0.43 8.50 1.21 0.20 0.50 8.75 1.28 0.23 0.58 9.00 1.35 0.27 0.66 9.25 1.42 0.30 0.71 9.50 1.49 0.34 0.74 9.75 1.57 0.39 0.83 10.00 1.66 0.44 0.96 10.25 1.76 0.49 1.14 10.50 1.87 0.56 1.34 10.75 2.00 0.65 1.64 11.00 2.15 0.75 1.99 11.25 2.34 0.89 2.65 11.50 2.59 1.07 3.52 11.75 3.54 1.82 16.93 12.00 6.07 4.05 49.46 12.25 6.47 4.42 6.75 12.50 6.73 4.67 4.36 12.75 6.92 4.84 3.19 13.00 7.07 4.98 2.67 13.25 7.20 5.11 2.30 13.50 7.32 5.22 2.02 13.75 7.42 5.31 1.79 14.00 7.51 5.40 1.58 14.25 7.59 5.48 1.47 14.50 7.67 5.55 1.40 14.75 7.75 5.62 1.33 15.00 7.82 5.69 1.25 15.25 7.88 5.75 1.18 15.50 7.95 5.81 1.11 15.75 8.01 5.87 1.04 16.00 8.06 5.92 0.97 16.25 8.11 5.97 0.93 16.50 8.16 6.01 0.90 16.75 8.21 6.06 0.88 17.00 8.26 6.11 0.85 17.25 8.31 6.15 0.83 17.50 8.35 6.19 0.80 17.75 8.39 6.23 0.78 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 18.00 8.44 6.27 0.75 18.25 8.48 6.31 0.73 18.50 8.52 6.35 0.70 18.75 8.55 6.39 0.67 19.00 8.59 6.42 0.65 19.25 8.62 6.45 0.62 19.50 8.66 6.49 0.60 19.75 8.69 6.52 0.57 20.00 8.72 6.55 0.55 Printed 6/4/2020 2020-05-20 Energy Balance Prepared by Timmons Group Type/1 24-hr 100-YR Rainfall=9.16" Summary for Subcatchment 5S: Mite To Bioretention 1 Runoff = 14.76 cfs @ 11.97 hrs, Volume= 0.682 af, Depth> 5.57" Printed 6/4/2020 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 0.530 98 Paved parking, HSG B 0.000 61 >75% Grass cover, Good, HSG B 0.940 60 Woods, Fair, HSG B 1.470 74 Weighted Average 0.940 63.95% Pervious Area 0.530 36.05% Impervious Area Tc Length Slope Velocity Capacity Description 6.0 Direct Entry, Subcatchment 5S: Mite To Bioretention 1 Hydrograph ❑ Runoff Time (hours) 2020-05-20 Energy Balance Prepared by Timmons Group 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 0.01 6.50 0.82 0.00 0.01 6.75 0.86 0.01 0.02 7.00 0.91 0.01 0.03 7.25 0.95 0.02 0.03 7.50 1.00 0.02 0.04 7.75 1.05 0.03 0.05 8.00 1.10 0.04 0.05 8.25 1.15 0.05 0.07 8.50 1.21 0.06 0.08 8.75 1.28 0.08 0.10 9.00 1.35 0.10 0.12 9.25 1.42 0.12 0.13 9.50 1.49 0.15 0.14 9.75 1.57 0.17 0.16 10.00 1.66 0.20 0.19 10.25 1.76 0.24 0.24 10.50 1.87 0.29 0.29 10.75 2.00 0.35 0.36 11.00 2.15 0.42 0.45 11.25 2.34 0.52 0.62 11.50 2.59 0.66 0.85 11.75 3.54 1.27 4.32 12.00 6.07 3.25 13.93 12.25 6.47 3.58 1.95 12.50 6.73 3.81 1.27 12.75 6.92 3.97 0.93 13.00 7.07 4.10 0.78 13.25 7.20 4.22 0.67 13.50 7.32 4.32 0.59 13.75 7.42 4.41 0.52 14.00 7.51 4.49 0.47 14.25 7.59 4.56 0.43 14.50 7.67 4.63 0.41 14.75 7.75 4.70 0.39 15.00 7.82 4.76 0.37 15.25 7.88 4.82 0.35 15.50 7.95 4.88 0.33 15.75 8.01 4.93 0.31 16.00 8.06 4.98 0.29 16.25 8.11 5.03 0.28 16.50 8.16 5.07 0.27 16.75 8.21 5.12 0.26 17.00 8.26 5.16 0.25 17.25 8.31 5.20 0.25 17.50 8.35 5.24 0.24 17.75 8.39 5.28 0.23 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 18.00 8.44 5.32 0.22 18.25 8.48 5.35 0.22 18.50 8.52 5.39 0.21 18.75 8.55 5.42 0.20 19.00 8.59 5.46 0.19 19.25 8.62 5.49 0.19 19.50 8.66 5.52 0.18 19.75 8.69 5.55 0.17 20.00 8.72 5.57 0.16 Printed 6/4/2020 2020-05-20 Energy Balance Prepared by Timmons Group Type/1 24-hr 100-YR Rainfall=9.16" Printed 6/4/2020 Summary for Subcatchment 7S: To Bioretention 2 Runoff = 19.58 cfs @ 11.96 hrs, Volume= 0.953 af, Depth> 6.77" 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 1.040 98 Paved parking, HSG B 0.640 61 >75% Grass cover, Good, HSG B 0.010 60 Woods, Fair, HSG B 1.690 84 Weighted Average 0.650 38.46% Pervious Area 1.040 61.54% Impervious Area Tc Length Slope Velocity Capacity Description 6.0 21 29- 19 18- 17, 16= 15 14- 13= s 10 LL 9, 8 7 Direct Entry, Subcatchment 7S: To Bioretention 2 Hydrograph �L___ � Type 11 24-hr 100-YR Rainfall=9.16" Runoff Area=1.690 ac Runoff Volume=0.953 of '--Runoff Depth>6.77" T c=6.0 CN=84- 6 7 8 9 19 11 12 13 14 15 16 17 18 19 Time (hours) ❑ Runoff 2020-05-20 Energy Balance Prepared by Timmons Group 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 0.02 0.04 5.25 0.61 0.03 0.05 5.50 0.65 0.03 0.06 5.75 0.69 0.04 0.07 6.00 0.73 0.05 0.08 6.25 0.77 0.07 0.09 6.50 0.82 0.08 0.10 6.75 0.86 0.10 0.11 7.00 0.91 0.11 0.12 7.25 0.95 0.13 0.13 7.50 1.00 0.15 0.14 7.75 1.05 0.17 0.15 8.00 1.10 0.20 0.16 8.25 1.15 0.22 0.18 8.50 1.21 0.25 0.21 8.75 1.28 0.29 0.24 9.00 1.35 0.32 0.27 9.25 1.42 0.37 0.29 9.50 1.49 0.41 0.30 9.75 1.57 0.46 0.33 10.00 1.66 0.51 0.38 10.25 1.76 0.58 0.45 10.50 1.87 0.65 0.53 10.75 2.00 0.74 0.64 11.00 2.15 0.85 0.77 11.25 2.34 1.00 1.02 11.50 2.59 1.19 1.35 11.75 3.54 1.97 6.38 12.00 6.07 4.26 18.25 12.25 6.47 4.64 2.48 12.50 6.73 4.89 1.60 12.75 6.92 5.06 1.17 13.00 7.07 5.21 0.98 13.25 7.20 5.33 0.84 13.50 7.32 5.44 0.74 13.75 7.42 5.54 0.65 14.00 7.51 5.63 0.58 14.25 7.59 5.71 0.54 14.50 7.67 5.78 0.51 14.75 7.75 5.85 0.48 15.00 7.82 5.92 0.46 15.25 7.88 5.98 0.43 15.50 7.95 6.04 0.41 15.75 8.01 6.10 0.38 16.00 8.06 6.15 0.35 16.25 8.11 6.20 0.34 16.50 8.16 6.25 0.33 16.75 8.21 6.30 0.32 17.00 8.26 6.35 0.31 17.25 8.31 6.39 0.30 17.50 8.35 6.43 0.29 17.75 8.39 6.47 0.28 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 18.00 8.44 6.51 0.27 18.25 8.48 6.55 0.26 18.50 8.52 6.59 0.26 18.75 8.55 6.63 0.25 19.00 8.59 6.66 0.24 19.25 8.62 6.70 0.23 19.50 8.66 6.73 0.22 19.75 8.69 6.76 0.21 20.00 8.72 6.79 0.20 Printed 6/4/2020 2020-05-20 Energy Balance Prepared by Timmons Group Type // 24-hr 100-YR Rainfall=9.16" Summary for Pond 6P: BIORETENTION 1 [82] Warning: Early inflow requires earlier time span [93] Warning: Storage range exceeded by 0.09' [88] Warning: Qout>Qin may require smaller dt or Finer Routing Printed 6/4/2020 Inflow Area = 6.150 ac, 52.68% Impervious, Inflow Depth > 6.30" for 100-YR event Inflow = 67.71 cfs @ 11.97 hrs, Volume= 3.229 of Outflow = 69.62 cfs @ 11.99 hrs, Volume= 2.916 af, Atten= 0%, Lag= 1.4 min Primary = 69.62 cfs @ 11.99 hrs, Volume= 2.916 of Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Peak Elev= 416.09' @ 11.99 hrs Surf.Area= 6,596 sf Storage= 19,325 cf Plug -Flow detention time= 57.4 min calculated for 2.916 of (90% of inflow) Center -of -Mass det. time= 23.5 min ( 782.4 - 758.8 ) Volume Invert Avail.Storage Storage Description #1 407.00' 19,325 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Voids Inc.Store Cum.Store (feet) (sq-ft) M (cubic -feet) (cubic -feet) 407.00 3,808 0.0 0 0 411.00 3,808 40.0 6,093 6,093 414.00 3,808 25.0 2,856 8,949 415.00 5,174 100.0 4,491 13,440 416.00 6,596 100.0 5,885 19,325 Device Routing Invert Outlet Devices #1 Primary 409.56' 36.0" Round HDPE_Round 30" L= 37.1' RCP, sq.cut end projecting, Ke= 0.500 Inlet / Outlet Invert= 409.56' / 409.00' S= 0.0151 T Cc= 0.900 n= 0.010 PVC, smooth interior, Flow Area= 7.07 sf #2 Device 1 415.00' 36.0" Horiz. Orifice/Grate X 2.00 C= 0.600 Limited to weir flow at low heads Primary OutFlow Max=66.83 cfs @ 11.99 hrs HW=416.06' (Free Discharge) t1=HDPE_Round 30" (Passes 66.83 cfs of 76.07 cfs potential flow) L2=Orifice/Grate (Weir Controls 66.83 cfs @ 3.36 fps) 2020-05-20 Energy Balance Prepared by Timmons Group Type // 24-hr 100-YR Rainfall=9.16" Pond 6P: BIORETENTION 1 Hydrograph Time )hours) Pond 6P: BIORETENTION 1 Stage -Discharge Discharge (cfs) Printed 6/4/2020 ■ Inflow ■ Primary D Primary 2020-05-20 Energy Balance Type // 24-hr 100-YR Rainfall=9.16" Prepared by Timmons Group Printed 6/4/2020 Pond 6P: BIORETENTION 1 Stage -Area -Storage Surface/HorzontalMetted Area (Sy-ft) 500 1,000 1,500 2,000 2,500 3,000 3,500 4,000 4,500 5,000 5,500 6,000 Storage (cubic -feet) 6,500 ❑ Surface ❑ Storage 2020-05-20 Energy Balance Prepared by Timmons Group 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 0.07 6 407.00 0.00 5.50 0.12 175 407.11 0.00 6.00 0.17 426 407.28 0.00 6.50 0.23 780 407.51 0.00 7.00 0.29 1,249 407.82 0.00 7.50 0.36 1,839 408.21 0.00 8.00 0.43 2,554 408.68 0.00 8.50 0.58 3,453 409.27 0.00 9.00 0.78 4,670 410.07 0.00 9.50 0.88 6,180 411.09 0.00 10.00 1.16 7,981 412.98 0.00 10.50 1.63 10,465 414.37 0.00 11.00 2.44 13,853 415.08 1.50 11.50 4.37 14,306 415.16 4.18 12.00 63.39 19,325 416.08 68.74 12.50 5.62 14,561 415.21 6.02 13.00 3.45 14,212 415.15 3.56 13.50 2.61 14,075 415.12 2.67 14.00 2.05 13,987 415.10 2.10 14.50 1.81 13,935 415.09 1.83 15.00 1.63 13,890 415.09 1.65 15.50 1.44 13,844 415.08 1.47 16.00 1.26 13,798 415.07 1.28 16.50 1.17 13,772 415.06 1.18 17.00 1.11 13,755 415.06 1.12 17.50 1.04 13,739 415.06 1.05 18.00 0.97 13,723 415.05 0.98 18.50 0.91 13,706 415.05 0.92 19.00 0.84 13,689 415.05 0.85 19.50 0.78 13,673 415.04 0.79 20.00 0.71 13,656 415.04 0.72 Printed 6/4/2020 2020-05-20 Energy Balance Prepared by Timmons Group Elevation Primary (feet) (cfs) 407.00 0.00 407.10 0.00 407.20 0.00 407.30 0.00 407.40 0.00 407.50 0.00 407.60 0.00 407.70 0.00 407.80 0.00 407.90 0.00 408.00 0.00 408.10 0.00 408.20 0.00 408.30 0.00 408.40 0.00 408.50 0.00 408.60 0.00 408.70 0.00 408.80 0.00 408.90 0.00 409.00 0.00 409.10 0.00 409.20 0.00 409.30 0.00 409.40 0.00 409.50 0.00 409.60 0.00 409.70 0.00 409.80 0.00 409.90 0.00 410.00 0.00 410.10 0.00 410.20 0.00 410.30 0.00 410.40 0.00 410.50 0.00 410.60 0.00 410.70 0.00 410.80 0.00 410.90 0.00 411.00 0.00 411.10 0.00 411.20 0.00 411.30 0.00 411.40 0.00 411.50 0.00 411.60 0.00 411.70 0.00 411.80 0.00 411.90 0.00 412.00 0.00 412.10 0.00 Type/1 24-hr 100-YR Rainfall=9.16" Stage -Discharge for Pond 6P: BIORETENTION 1 Elevation Primary (feet) (cfs) 412.20 0.00 412.30 0.00 412.40 0.00 412.50 0.00 412.60 0.00 412.70 0.00 412.80 0.00 412.90 0.00 413.00 0.00 413.10 0.00 413.20 0.00 413.30 0.00 413.40 0.00 413.50 0.00 413.60 0.00 413.70 0.00 413.80 0.00 413.90 0.00 414.00 0.00 414.10 0.00 414.20 0.00 414.30 0.00 414.40 0.00 414.50 0.00 414.60 0.00 414.70 0.00 414.80 0.00 414.90 0.00 415.00 0.00 415.10 1.95 415.20 5.51 415.30 10.13 415.40 15.59 415.50 21.79 415.60 28.65 415.70 36.10 415.80 44.10 415.90 52.63 416.00 61.64 Printed 6/4/2020 2020-05-20 Energy Balance Prepared by Timmons Group 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) 407.00 3,808 0 407.10 3,808 152 407.20 3,808 305 407.30 3,808 457 407.40 3,808 609 407.50 3,808 762 407.60 3,808 914 407.70 3,808 1,066 407.80 3,808 1,219 407.90 3,808 1,371 408.00 3,808 1,523 408.10 3,808 1,676 408.20 3,808 1,828 408.30 3,808 1,980 408.40 3,808 2,132 408.50 3,808 2,285 408.60 3,808 2,437 408.70 3,808 2,589 408.80 3,808 2,742 408.90 3,808 2,894 409.00 3,808 3,046 409.10 3,808 3,199 409.20 3,808 3,351 409.30 3,808 3,503 409.40 3,808 3,656 409.50 3,808 3,808 409.60 3,808 3,960 409.70 3,808 4,113 409.80 3,808 4,265 409.90 3,808 4,417 410.00 3,808 4,570 410.10 3,808 4,722 410.20 3,808 4,874 410.30 3,808 5,027 410.40 3,808 5,179 410.50 3,808 5,331 410.60 3,808 5,484 410.70 3,808 5,636 410.80 3,808 5,788 410.90 3,808 5,940 411.00 3,808 6,093 411.10 3,808 6,188 411.20 3,808 6,283 411.30 3,808 6,378 411.40 3,808 6,474 411.50 3,808 6,569 411.60 3,808 6,664 411.70 3,808 6,759 411.80 3,808 6,854 411.90 3,808 6,950 412.00 3,808 7,045 412.10 3,808 7,140 Elevation Surface Storage (feet) (sq-ft) (cubic -feet) 412.20 3,808 7,235 412.30 3,808 7,330 412.40 3,808 7,426 412.50 3,808 7,521 412.60 3,808 7,616 412.70 3,808 7,711 412.80 3,808 7,806 412.90 3,808 7,902 413.00 3,808 7,997 413.10 3,808 8,092 413.20 3,808 8,187 413.30 3,808 8,282 413.40 3,808 8,378 413.50 3,808 8,473 413.60 3,808 8,568 413.70 3,808 8,663 413.80 3,808 8,758 413.90 3,808 8,854 414.00 3,808 8,949 414.10 3,945 9,336 414.20 4,081 9,738 414.30 4,218 10,153 414.40 4,354 10,581 414.50 4,491 11,024 414.60 4,628 11,479 414.70 4,764 11,949 414.80 4,901 12,432 414.90 5,037 12,929 415.00 5,174 13,440 415.10 5,316 13,964 415.20 5,458 14,503 415.30 5,601 15,056 415.40 5,743 15,623 415.50 5,885 16,205 415.60 6,027 16,800 415.70 6,169 17,410 415.80 6,312 18,034 415.90 6,454 18,672 416.00 6,596 19,325 Printed 6/4/2020 2020-05-20 Energy Balance Prepared by Timmons Group Type // 24-hr 100-YR Rainfall=9.16" Summary for Pond 8P: BIORETENTION 2 [82] Warning: Early inflow requires earlier time span Printed 6/4/2020 Inflow Area = 1.690 ac, 61.54% Impervious, Inflow Depth > 6.77" for 100-YR event Inflow = 19.58 cfs @ 11.96 hrs, Volume= 0.953 of Outflow = 19.34 cfs @ 11.98 hrs, Volume= 0.825 af, Atten= 1 %, Lag= 1.1 min Primary = 19.34 cfs @ 11.98 hrs, Volume= 0.825 of Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Peak Elev= 432.64' @ 11.98 hrs Surf.Area= 2,240 sf Storage= 7,084 cf Plug -Flow detention time= 72.7 min calculated for 0.822 of (86% of inflow) Center -of -Mass det. time= 30.6 min ( 782.8 - 752.2 ) 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' 24.0" Round HDPE_Round 24" 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= 3.14 sf #2 Device 1 431.91' 36.0" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads Primary OutFlow Max=18.63 cfs @ 11.98 hrs HW=432.62' (Free Discharge) t1=HDPE_Round 24" (Passes 18.63 cfs of 40.58 cfs potential flow) L2=Orifice/Grate (Weir Controls 18.63 cfs @ 2.77 fps) 2020-05-20 Energy Balance Prepared by Timmons Group W Type // 24-hr 100-YR Rainfall=9.16" Pond 8P: BIORETENTION 2 Hydrograph Time )hours) Pond 8P: BIORETENTION 2 Stage -Discharge Discharge (cfs) Printed 6/4/2020 ■ Inflow ■ Primary ❑ Primary 2020-05-20 Energy Balance Prepared by Timmons Group Type // 24-hr 100-YR Rainfall=9.16" Pond 8P: BIORETENTION 2 Stage -Area -Storage Surface/HorizontaiMefted Area (sq-ft) Storage (cubic -feet) Printed 6/4/2020 ❑ Surface ❑ Storage 2020-05-20 Energy Balance Prepared by Timmons Group 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 4 423.92 0.00 5.50 0.06 94 424.06 0.00 6.00 0.08 216 424.25 0.00 6.50 0.10 372 424.50 0.00 7.00 0.12 564 424.80 0.00 7.50 0.14 793 425.16 0.00 8.00 0.16 1,059 425.58 0.00 8.50 0.21 1,382 426.09 0.00 9.00 0.27 1,807 426.76 0.00 9.50 0.30 2,321 427.57 0.00 10.00 0.38 2,920 428.87 0.00 10.50 0.53 3,729 430.91 0.00 11.00 0.77 4,880 431.58 0.00 11.50 1.35 5,766 432.03 1.30 12.00 18.25 7,062 432.63 18.98 12.50 1.60 5,816 432.05 1.71 13.00 0.98 5,729 432.01 1.00 13.50 0.74 5,696 431.99 0.76 14.00 0.58 5,671 431.98 0.59 14.50 0.51 5,652 431.97 0.52 15.00 0.46 5,640 431.97 0.47 15.50 0.41 5,627 431.96 0.41 16.00 0.35 5,614 431.95 0.36 16.50 0.33 5,607 431.95 0.33 17.00 0.31 5,603 431.95 0.31 17.50 0.29 5,598 431.95 0.30 18.00 0.27 5,594 431.94 0.28 18.50 0.26 5,589 431.94 0.26 19.00 0.24 5,584 431.94 0.24 19.50 0.22 5,580 431.94 0.22 20.00 0.20 5,575 431.93 0.20 Printed 6/4/2020 2020-05-20 Energy Balance Prepared by Timmons Group 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/1 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 25.44 432.85 28.09 432.91 30.82 432.97 33.63 433.03 36.02 433.09 36.97 433.15 37.90 433.21 38.81 Printed 6/4/2020 Elevation Primary (feet) (cfs) 433.27 39.69 433.33 40.56 433.39 41.41 433.45 42.24 433.51 43.00 433.57 43.16 433.63 43.32 433.69 43.47 433.75 43.63 433.81 43.79 433.87 43.95 433.93 44.10 433.99 ".26 2020-05-20 Energy Balance Prepared by Timmons Group Type/1 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 6/4/2020 11S 9S \ Onsite nrouted 4 To Storage @¢e 10 Storage Pip 320x60 4S 7S Onsite o Bioretengon 1 1 S PRE site To Biottion 2 23 8P 6P d' 5S re Otrsite Oflsite To Bioretention 1 CS BIORETENTION z " 13L RETENTION 1 3L Link 1 (new Link) 12S Onsite Unrouted 5 Subcat Reach Aon Llnk 2020-07-24 Full Routing Type 11 24-hr 1-YR Rainfall=3.05" Prepared by Timmons Group Printed 7/24/2020 HydroCAD® 10.00-25 s/n 08663 © 2019 HydroCAD Software Solutions LLC Page 2 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 SubcatchmentlS: PRE Onsite Runoff Area=15.630 ac 3.39% Impervious Runoff Depth>0.33" Tc=6.0 min CN=61 Runoff=7.87 cfs 0.428 of Subcatchment2S: Pre Offsite Runoff Area=1.470 ac 36.05% Impervious Runoff Depth>0.85" Tc=6.0 min CN=74 Runoff=2.37 cfs 0.104 of Subcatchment4S: Onsite To Bioretentionl Runoff Area=4.680ac 57.91%Impervious Runoff Depth>1.30" Tc=6.0 min CN=82 Runoff=11.45 cfs 0.508 of Subcatchment5S: Offsite To Bioretention 1 Runoff Area=1.470 ac 36.05% Impervious Runoff Depth>0.85" Tc=6.0 min CN=74 Runoff=2.37 cfs 0.104 of Subcatchment7S: To Bioretention2 Runoff Area=1.690 ac 61.54% Impervious Runoff Depth>1.44" Tc=6.0 min CN=84 Runoff=4.53 cfs 0.202 of Subcatchment9S: To Storage Pipe Runoff Area=8.480 ac 23.11 % Impervious Runoff Depth>0.66" Tc=6.0 min CN=70 Runoff=10.47 cfs 0.466 of Subcatchmentl1S: Onsite Unrouted4 Runoff Area=1.060 ac 16.98% Impervious Runoff Depth>0.54" Tc=6.0 min CN=67 Runoff=1.03 cfs 0.047 of Subcatchmentl2S: Onsite Unrouted 5 Runoff Area=0.280 ac 21.43% Impervious Runoff Depth>0.62" Tc=6.0 min CN=69 Runoff=0.32 cfs 0.014 of Pond 6P: BIORETENTION 1 Peak EIev=415.10' Storage=13,947 cf Inflow=13.92 cfs 0.611 of Outflow=1.88 cfs 0.301 of Pond 8P: BIORETENTION2 Peak EIev=431.95' Storage=5,603 cf Inflow=4.53 cfs 0.202 of Outflow=0.32 cfs 0.075 of Pond 10P: Storage Pipe 320x60 Peak EIev=416.48' Storage=5,913 cf Inflow=10.47 cfs 0.466 of Outflow=2.22 cfs 0.463 of Link 3L: (new Link) Inflow=10.18 cfs 0.531 of Primary=10.18 cfs 0.531 of Link 13L: Link 1 Inflow=4.30 cfs 0.900 of Primary=4.30 cfs 0.900 of Total Runoff Area = 34.760 ac Runoff Volume = 1.873 of Average Runoff Depth = 0.65" 78.31% Pervious = 27.220 ac 21.69% Impervious = 7.540 ac 2020-07-24 Full Routing Prepared by Timmons GrOL Type/1 24-hr 1-YR Rainfall=3.05" Printed 7/24/2020 Summary for Subcatchment 1S: PRE Onsite Runoff = 7.87 cfs @ 12.00 hrs, Volume= 0.428 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 0.530 98 Paved parking, HSG B 0.000 61 >75% Grass cover, Good, HSG B 15.100 60 Woods, Fair, HSG B 15.630 61 Weighted Average 15.100 96.61 % Pervious Area 0.530 3.39% Impervious Area Tc Length Description 6.0 Direct Entry, Subcatchment 1S: PRE Onsite Hydrograph ---J----`-------`----`---,. 6 I I I I ]8]ch I I I I I I I I I I I I 7 I I I I I I 6 I I I I ry� 5 I I I I i I I I u I I I I I 0 4 I I I I I I LL I I I I I 3 I I I I I I I I I I I I I I I I I I I I I I I I 2 I I I I I I I 1 I I I I I I I I I I I I Type II 24-hr 1-YR Rainfall=3.05" Runoff Area=15.630 ac Runoff Vo1ume=0.42&af- Runoff Depth>0.33" T'c=6.0 min 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) ❑ Runoff 2020-07-24 Full Routing Prepared by Timmons GrOL Type/1 24-hr 1-YR Rainfall=3.05" Hydrograph for Subcatchment IS: 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 7.87 12.25 2.15 0.11 1.75 12.50 2.24 0.13 1.24 12.75 2.30 0.14 0.96 13.00 2.35 0.15 0.83 13.25 2.40 0.17 0.74 13.50 2.44 0.18 0.67 13.75 2.47 0.19 0.61 14.00 2.50 0.20 0.55 14.25 2.53 0.20 0.52 14.50 2.55 0.21 0.50 14.75 2.58 0.22 0.48 15.00 2.60 0.23 0.46 15.25 2.63 0.23 0.44 15.50 2.65 0.24 0.42 15.75 2.67 0.25 0.39 16.00 2.68 0.25 0.37 16.25 2.70 0.26 0.36 16.50 2.72 0.26 0.35 16.75 2.73 0.27 0.34 17.00 2.75 0.28 0.34 17.25 2.77 0.28 0.33 17.50 2.78 0.29 0.32 17.75 2.80 0.29 0.31 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 18.00 2.81 0.30 0.31 18.25 2.82 0.30 0.30 18.50 2.84 0.30 0.29 18.75 2.85 0.31 0.28 19.00 2.86 0.31 0.27 19.25 2.87 0.32 0.26 19.50 2.88 0.32 0.25 19.75 2.89 0.33 0.24 20.00 2.90 0.33 0.23 Printed 7/24/2020 2020-07-24 Full Routing Prepared by Timmons GrOL Type/1 24-hr 1-YR Rainfall=3.05" Printed 7/24/2020 Summary for Subcatchment 2S: Pre Offsite Runoff = 2.37 cfs @ 11.98 hrs, Volume= 0.104 af, Depth> 0.85" 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 0.530 98 Paved parking, HSG B 0.000 61 >75% Grass cover, Good, HSG B 0.940 60 Woods, Fair, HSG B 1.470 74 Weighted Average 0.940 63.95% Pervious Area 0.530 36.05% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 2S: Pre Offsite Hydrograph I 'I II ❑Runoff 23�ch I I I I I I I I I Type II 24-hr J----L -- 1----1---- I-----JI --- -1-YR Rainfall=3.05" z I I I I I I I I I I I Runoff Area=1.470 ac I I I I I I Runoff Volume=0.104 of I I I I I I I I I I I I Runoff Depth>0.85" 3 I I I I I I I LL I I I I I I I I Tc=6.0 min CN=74 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 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 o- 5 6 78 9 10 11 12 13 14 15 16 17 18 19 20 Time (hours) 2020-07-24 Full Routing Prepared by Timmons GrOL Type/1 24-hr 1-YR Rainfall=3.05" Hydrograph for Subcatchment 2S: Pre Offsite 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 0.01 11.50 0.86 0.01 0.03 11.75 1.18 0.06 0.36 12.00 2.02 0.36 2.31 12.25 2.15 0.42 0.37 12.50 2.24 0.47 0.25 12.75 2.30 0.50 0.19 13.00 2.35 0.53 0.16 13.25 2.40 0.55 0.14 13.50 2.44 0.57 0.12 13.75 2.47 0.59 0.11 14.00 2.50 0.61 0.10 14.25 2.53 0.62 0.09 14.50 2.55 0.64 0.09 14.75 2.58 0.65 0.08 15.00 2.60 0.67 0.08 15.25 2.63 0.68 0.08 15.50 2.65 0.69 0.07 15.75 2.67 0.70 0.07 16.00 2.68 0.71 0.06 16.25 2.70 0.72 0.06 16.50 2.72 0.73 0.06 16.75 2.73 0.74 0.06 17.00 2.75 0.75 0.06 17.25 2.77 0.76 0.05 17.50 2.78 0.77 0.05 17.75 2.80 0.78 0.05 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 18.00 2.81 0.79 0.05 18.25 2.82 0.80 0.05 18.50 2.84 0.81 0.05 18.75 2.85 0.81 0.05 19.00 2.86 0.82 0.04 19.25 2.87 0.83 0.04 19.50 2.88 0.83 0.04 19.75 2.89 0.84 0.04 20.00 2.90 0.85 0.04 Printed 7/24/2020 2020-07-24 Full Routing Prepared by Timmons GrOL Type/1 24-hr 1-YR Rainfall=3.05" Printed 7/24/2020 Summary for Subcatchment 4S: Onsite To Bioretention 1 Runoff = 11.45 cfs @ 11.97 hrs, Volume= 0.508 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 2.710 98 Paved parking, HSG B 1.510 61 >75% Grass cover, Good, HSG B 0.460 60 Woods, Fair, HSG B 4.680 82 Weighted Average 1.970 42.09% Pervious Area 2.710 57.91% Impervious Area Tc Length Description 6.0 Direct Entry, Subcatchment 4S: Onsite To Bioretention 1 Hydrograph ---------------- ----_---i-------J------------i_.. 12 11A5 cfs 11- Type II 24-hr 19 1-YR Rainfall=3.05" 9. Runoff Area=4.680 ac 8 " 'Runoff Volume=0.508 of - ---- - -- -- - Runoff Depth>1.30" 6 —=----=---- -- -- -- - Tc=6.0 min 5- CN=82 --------------- ------ ----- a- 3'. 2 ____________________________ 5 6 7 8 9 19 11 12 13 14 15 16 17 18 19 Time (hours) ❑ Runoff 2020-07-24 Full Routing Prepared by Timmons GrOL Type/1 24-hr 1-YR Rainfall=3.05" Printed 7/24/2020 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 0.00 9.25 0.47 0.00 0.01 9.50 0.50 0.00 0.02 9.75 0.52 0.00 0.03 10.00 0.55 0.01 0.05 10.25 0.58 0.01 0.07 10.50 0.62 0.01 0.10 10.75 0.67 0.02 0.14 11.00 0.72 0.03 0.20 11.25 0.78 0.05 0.30 11.50 0.86 0.07 0.45 11.75 1.18 0.19 2.69 12.00 2.02 0.66 11.04 12.25 2.15 0.75 1.64 12.50 2.24 0.81 1.08 12.75 2.30 0.86 0.80 13.00 2.35 0.89 0.67 13.25 2.40 0.92 0.59 13.50 2.44 0.95 0.52 13.75 2.47 0.98 0.46 14.00 2.50 1.00 0.41 14.25 2.53 1.02 0.38 14.50 2.55 1.04 0.36 14.75 2.58 1.06 0.35 15.00 2.60 1.07 0.33 15.25 2.63 1.09 0.31 15.50 2.65 1.11 0.29 15.75 2.67 1.12 0.28 16.00 2.68 1.14 0.26 16.25 2.70 1.15 0.25 16.50 2.72 1.16 0.24 16.75 2.73 1.17 0.23 17.00 2.75 1.19 0.23 17.25 2.77 1.20 0.22 17.50 2.78 1.21 0.21 17.75 2.80 1.22 0.21 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 18.00 2.81 1.23 0.20 18.25 2.82 1.24 0.20 18.50 2.84 1.25 0.19 18.75 2.85 1.26 0.18 19.00 2.86 1.27 0.18 19.25 2.87 1.28 0.17 19.50 2.88 1.29 0.16 19.75 2.89 1.30 0.15 20.00 2.90 1.30 0.15 2020-07-24 Full Routing Prepared by Timmons GrOL Type/1 24-hr 1-YR Rainfall=3.05" Printed 7/24/2020 Summary for Subcatchment 5S: Offsite To Bioretention 1 Runoff = 2.37 cfs @ 11.98 hrs, Volume= 0.104 af, Depth> 0.85" 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 0.530 98 Paved parking, HSG B 0.000 61 >75% Grass cover, Good, HSG B 0.940 60 Woods, Fair, HSG B 1.470 74 Weighted Average 0.940 63.95% Pervious Area 0.530 36.05% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 5S: Offsite To Bioretention 1 Hydrograph I 'I II ❑Runoff 23]ch I I I I I I I I I Type II 24-hr J----L -- 1----1---- I-----JI --- -1-YR Rainfall=3.05" z I I I I I I I I I I I Runoff Area=1.470 ac I I I I I I Runoff Volume=0.104 of I I I I I I I I I I I I Runoff Depth>0.85" 3 I I I I I I I LL I I I I I I I I Tc=6.0 min CN=74 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 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 o- 5 6 78 9 10 11 12 13 14 15 16 17 18 19 20 Time (hours) 2020-07-24 Full Routing Prepared by Timmons GrOL Type/1 24-hr 1-YR Rainfall=3.05" Printed 7/24/2020 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 0.01 11.50 0.86 0.01 0.03 11.75 1.18 0.06 0.36 12.00 2.02 0.36 2.31 12.25 2.15 0.42 0.37 12.50 2.24 0.47 0.25 12.75 2.30 0.50 0.19 13.00 2.35 0.53 0.16 13.25 2.40 0.55 0.14 13.50 2.44 0.57 0.12 13.75 2.47 0.59 0.11 14.00 2.50 0.61 0.10 14.25 2.53 0.62 0.09 14.50 2.55 0.64 0.09 14.75 2.58 0.65 0.08 15.00 2.60 0.67 0.08 15.25 2.63 0.68 0.08 15.50 2.65 0.69 0.07 15.75 2.67 0.70 0.07 16.00 2.68 0.71 0.06 16.25 2.70 0.72 0.06 16.50 2.72 0.73 0.06 16.75 2.73 0.74 0.06 17.00 2.75 0.75 0.06 17.25 2.77 0.76 0.05 17.50 2.78 0.77 0.05 17.75 2.80 0.78 0.05 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 18.00 2.81 0.79 0.05 18.25 2.82 0.80 0.05 18.50 2.84 0.81 0.05 18.75 2.85 0.81 0.05 19.00 2.86 0.82 0.04 19.25 2.87 0.83 0.04 19.50 2.88 0.83 0.04 19.75 2.89 0.84 0.04 20.00 2.90 0.85 0.04 2020-07-24 Full Routing Prepared by Timmons GrOL Type/1 24-hr 1-YR Rainfall=3.05" Printed 7/24/2020 Summary for Subcatchment 7S: To Bioretention 2 Runoff = 4.53 cfs @ 11.97 hrs, Volume= 0.202 af, Depth> 1.44" 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 1.040 98 Paved parking, HSG B 0.640 61 >75% Grass cover, Good, HSG B 0.010 60 Woods, Fair, HSG B 1.690 84 Weighted Average 0.650 38.46% Pervious Area 1.040 61.54% Impervious Area Tc Length Description Direct Entry, Subcatchment 7S: To Bioretention 2 Hydrograph ❑ Runoff 2 Type II 24-hr 1-YR Rainfall=3.05" Runoff Area=1.690 ac (Runoff Volume=0.202 of Runoff Depth>1.44" Tc=6.0 min j CN=84 0 56 78 9 10 11 12 13 14 15 16 17 18 19 20 Time (hours) 2020-07-24 Full Routing Prepared by Timmons GrOL Type/1 24-hr 1-YR Rainfall=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 0.01 9.00 0.45 0.00 0.01 9.25 0.47 0.00 0.01 9.50 0.50 0.01 0.02 9.75 0.52 0.01 0.02 10.00 0.55 0.01 0.03 10.25 0.58 0.02 0.04 10.50 0.62 0.03 0.05 10.75 0.67 0.04 0.07 11.00 0.72 0.05 0.09 11.25 0.78 0.07 0.14 11.50 0.86 0.10 0.20 11.75 1.18 0.24 1.14 12.00 2.02 0.76 4.34 12.25 2.15 0.85 0.63 12.50 2.24 0.92 0.42 12.75 2.30 0.97 0.31 13.00 2.35 1.00 0.26 13.25 2.40 1.04 0.22 13.50 2.44 1.07 0.20 13.75 2.47 1.09 0.18 14.00 2.50 1.12 0.16 14.25 2.53 1.14 0.15 14.50 2.55 1.16 0.14 14.75 2.58 1.18 0.13 15.00 2.60 1.20 0.13 15.25 2.63 1.21 0.12 15.50 2.65 1.23 0.11 15.75 2.67 1.25 0.10 16.00 2.68 1.26 0.10 16.25 2.70 1.27 0.09 16.50 2.72 1.29 0.09 16.75 2.73 1.30 0.09 17.00 2.75 1.31 0.09 17.25 2.77 1.33 0.08 17.50 2.78 1.34 0.08 17.75 2.80 1.35 0.08 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 18.00 2.81 1.36 0.08 18.25 2.82 1.37 0.07 18.50 2.84 1.38 0.07 18.75 2.85 1.39 0.07 19.00 2.86 1.40 0.07 19.25 2.87 1.41 0.06 19.50 2.88 1.42 0.06 19.75 2.89 1.43 0.06 20.00 2.90 1.44 0.06 Printed 7/24/2020 2020-07-24 Full Routing Prepared by Timmons GrOL Type/1 24-hr 1-YR Rainfall=3.05" Printed 7/24/2020 Summary for Subcatchment 9S: To Storage Pipe Runoff = 10.47 cfs @ 11.99 hrs, Volume= 0.466 af, Depth> 0.66" 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 1.960 98 Paved parking, HSG B 6.520 61 >75% Grass cover, Good, HSG B 0.000 60 Woods, Fair, HSG B 8.480 70 Weighted Average 6.520 76.89% Pervious Area 1.960 23.11% Impervious Area Tc Length M Description Direct Entry, Subcatchment 9S: To Storage Pipe Hydrograph ------ ------- - - - - -- ------ I I I I 1 o. 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 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 II I I I I I I Type II 24-hr 1-YR Rainfall=3.05" Runoff Area=8.480 ac Runoff Volume=0.466 of Runoff Depth>0.66" ---- - Tc=6.0 min -------- ----III CN=70 -------- T----'r - L____ L_____ I I 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Time (hours) ❑ Runoff 2020-07-24 Full Routing Prepared by Timmons GrOL Type/1 24-hr 1-YR Rainfall=3.05" Hydrograph for Subcatchment 9S: To Storage Pipe 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 0.02 0.98 12.00 2.02 0.25 10.29 12.25 2.15 0.30 1.76 12.50 2.24 0.34 1.19 12.75 2.30 0.36 0.90 13.00 2.35 0.39 0.77 13.25 2.40 0.41 0.67 13.50 2.44 0.43 0.60 13.75 2.47 0.44 0.54 14.00 2.50 0.46 0.48 14.25 2.53 0.47 0.45 14.50 2.55 0.48 0.43 14.75 2.58 0.49 0.41 15.00 2.60 0.51 0.39 15.25 2.63 0.52 0.37 15.50 2.65 0.53 0.35 15.75 2.67 0.54 0.33 16.00 2.68 0.55 0.31 16.25 2.70 0.55 0.30 16.50 2.72 0.56 0.29 16.75 2.73 0.57 0.29 17.00 2.75 0.58 0.28 17.25 2.77 0.59 0.27 17.50 2.78 0.60 0.27 17.75 2.80 0.60 0.26 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 18.00 2.81 0.61 0.25 18.25 2.82 0.62 0.24 18.50 2.84 0.62 0.24 18.75 2.85 0.63 0.23 19.00 2.86 0.64 0.22 19.25 2.87 0.64 0.21 19.50 2.88 0.65 0.20 19.75 2.89 0.66 0.20 20.00 2.90 0.66 0.19 Printed 7/24/2020 2020-07-24 Full Routing Prepared by Timmons GrOL Type/1 24-hr 1-YR Rainfall=3.05" Printed 7/24/2020 Summary for Subcatchment 11S: Onsite Unrouted 4 Runoff = 1.03 cfs @ 11.99 hrs, Volume= 0.047 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 0.180 98 Paved parking, HSG B 0.620 61 >75% Grass cover, Good, HSG B 0.260 60 Woods, Fair, HSG B 1.060 67 Weighted Average 0.880 83.02% Pervious Area 0.180 16.98% Impervious Area Tc Length Description 6.0 Direct Entry, Subcatchment 11S: Onsite Unrouted 4 Hydrograph I I I I I I I I I I 1 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 N I I I I I y I I I I I I I I I I 3 I I I I I LL 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 I I I I I I I I I I I I I I I I I I II II II ❑ Runoff Type 11 24-hr 1-YR Rainfall=3.05" Runoff Area=1.060 ac Runoff Volume=0.047 of Runoff Depth>0.54" Tc=6.0 min CN=67 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Time (hours) 2020-07-24 Full Routing Prepared by Timmons GrOL Type/1 24-hr 1-YR Rainfall=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 0.03 12.00 2.02 0.18 1.02 12.25 2.15 0.22 0.18 12.50 2.24 0.26 0.13 12.75 2.30 0.28 0.10 13.00 2.35 0.30 0.08 13.25 2.40 0.32 0.07 13.50 2.44 0.33 0.06 13.75 2.47 0.34 0.06 14.00 2.50 0.36 0.05 14.25 2.53 0.37 0.05 14.50 2.55 0.38 0.05 14.75 2.58 0.39 0.05 15.00 2.60 0.40 0.04 15.25 2.63 0.41 0.04 15.50 2.65 0.42 0.04 15.75 2.67 0.43 0.04 16.00 2.68 0.44 0.03 16.25 2.70 0.44 0.03 16.50 2.72 0.45 0.03 16.75 2.73 0.46 0.03 17.00 2.75 0.47 0.03 17.25 2.77 0.47 0.03 17.50 2.78 0.48 0.03 17.75 2.80 0.49 0.03 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 18.00 2.81 0.49 0.03 18.25 2.82 0.50 0.03 18.50 2.84 0.51 0.03 18.75 2.85 0.51 0.03 19.00 2.86 0.52 0.02 19.25 2.87 0.52 0.02 19.50 2.88 0.53 0.02 19.75 2.89 0.53 0.02 20.00 2.90 0.54 0.02 Printed 7/24/2020 2020-07-24 Full Routing Prepared by Timmons GrOL Type/1 24-hr 1-YR Rainfall=3.05" Printed 7/24/2020 Summary for Subcatchment 12S: Onsite Unrouted 5 Runoff = 0.32 cfs @ 11.99 hrs, Volume= 0.014 af, Depth> 0.62" 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 0.180 61 >75% Grass cover, Good, HSG B 0.040 60 Woods, Fair, HSG B 0.280 69 Weighted Average 0.220 78.57% Pervious Area 0.060 21.43% Impervious Area Tc Length 0. 0.1 M 0.1 0.1 o., 0. Description Direct Entry, Subcatchment 12S: Onsite Unrouted 5 Hydrograph Type N 24-hr 1-YR Rainfall=3.05" Runoff Area=0.28O ac Runoff-;Volume=0.014 of -- Runoff Depth>0.62" 0=60 min CrN-69 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Time (hours) ❑ Runaff 2020-07-24 Full Routing Prepared by Timmons GrOL Type/1 24-hr 1-YR Rainfall=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 0.02 0.02 12.00 2.02 0.22 0.32 12.25 2.15 0.27 0.05 12.50 2.24 0.31 0.04 12.75 2.30 0.33 0.03 13.00 2.35 0.36 0.02 13.25 2.40 0.38 0.02 13.50 2.44 0.39 0.02 13.75 2.47 0.41 0.02 14.00 2.50 0.42 0.02 14.25 2.53 0.43 0.01 14.50 2.55 0.45 0.01 14.75 2.58 0.46 0.01 15.00 2.60 0.47 0.01 15.25 2.63 0.48 0.01 15.50 2.65 0.49 0.01 15.75 2.67 0.50 0.01 16.00 2.68 0.51 0.01 16.25 2.70 0.52 0.01 16.50 2.72 0.52 0.01 16.75 2.73 0.53 0.01 17.00 2.75 0.54 0.01 17.25 2.77 0.55 0.01 17.50 2.78 0.56 0.01 17.75 2.80 0.56 0.01 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 18.00 2.81 0.57 0.01 18.25 2.82 0.58 0.01 18.50 2.84 0.58 0.01 18.75 2.85 0.59 0.01 19.00 2.86 0.60 0.01 19.25 2.87 0.60 0.01 19.50 2.88 0.61 0.01 19.75 2.89 0.61 0.01 20.00 2.90 0.62 0.01 Printed 7/24/2020 2020-07-24 Full Routing Prepared by Timmons GrOL Type/1 24-hr 1-YR Rainfall=3.05" Summary for Pond 6P: BIORETENTION 1 Printed 7/24/2020 Inflow Area = 6.150 ac, 52.68% Impervious, Inflow Depth > 1.19" for 1-YR event Inflow = 13.92 cfs @ 11.98 hrs, Volume= 0.611 of Outflow = 1.88 cfs @ 12.30 hrs, Volume= 0.301 af, Atten= 86%, Lag= 19.6 min Primary = 1.88 cfs @ 12.30 hrs, Volume= 0.301 of Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Peak Elev= 415.10' @ 12.30 hrs Surf.Area= 5,312 sf Storage= 13,947 cf Plug -Flow detention time= 173.3 min calculated for 0.301 of (49% of inflow) Center -of -Mass det. time= 89.1 min ( 884.1 - 795.0 ) Volume Invert Avail.Storage Storage Description #1 407.00' 19,325 cf Custom Stage Data (Prismatic)Listed below (Recalc) Elevation Surf.Area Voids Inc.Store Cum.Store (feet) (sq-ft) M (cubic -feet) (cubic -feet) 407.00 3,808 0.0 0 0 411.00 3,808 40.0 6,093 6,093 414.00 3,808 25.0 2,856 8,949 415.00 5,174 100.0 4,491 13,440 416.00 6,596 100.0 5,885 19,325 Device Routing Invert Outlet Devices #1 Primary 409.56' 36.0" Round HDPE_Round 30" L= 37.1' RCP, sq.cut end projecting, Ke= 0.500 Inlet / Outlet Invert= 409.56' / 409.00' S= 0.0151 '/' Cc= 0.900 n= 0.010 PVC, smooth interior, Flow Area= 7.07 sf #2 Device 1 415.00' 36.0" Horiz. Orifice/Grate X 2.00 C= 0.600 Limited to weir flow at low heads Primary OutFlow Max=1.85 cfs @ 12.30 hrs HW=415.10' (Free Discharge) t1=HDPE_Round 30" (Passes 1.85 cfs of 68.38 cfs potential flow) t2=Orif ice/G rate (Weir Controls 1.85 cfs @ 1.02 fps) 2020-07-24 Full Routing Prepared by Timmons GrOL Pond 6P: BIORETENTION 1 Hydrograph I I I I -----------t--------*---,- 14 , I 1 I I I I 13 I I I I I I 12 �� 7____I____r___�_ I 1 I I I I I 1 1 10 , 1 I I I I I $ I I I I 3 LL , I 1 6 I I I I I 1 5 1 4 I I I I 1 1 3 1 1 I I I I 1 1 I I I �. 2 -------r---r----r---r--- Type // 24-hr 1-YR Rainfall=3.05" Printed 7/24/2020 Inflow Area=6.150 ac- Peak Elev=415.10' . Storage=1,3,947 cf- 1 I I I I I I 1 I I I I I 1 I I I I I I I 1 I I I I I 1 1 I I I I 1 1 1 I I I J _ 1 I 1 I I I I 1 r ---- r r--- _1_ 1 12 13 14 15 16 17 18 Time (hours) Pond 6P: BIORETENTION 1 Stage -Discharge 416 ----------- Orifice/Grate -----i---------_i-----I- I I I I I I I 415 I I I I I I I I 414 I I I I I I I I I I I I I I 413 I I I I I I I I I I I I I I _I I _i _I _i _I `. 412 I I I I I I I I I C I I I j 411 I I I I I I I I I d I I I I I I I I I W I I I I I I I I I 1 410 HDPE Round 30" - I I I I I I I I 409 I I I I I I I I I I I I I I I I I I I I 408 I I I I I I I I I I I I I I I I I I I Discharge (cfs) B Inflow ■ Primary ■ Pdmary 2020-07-24 Full Routing Prepared by Timmons GrOI Type // 24-hr 1-YR Rainfall=3.05" Printed 7/24/2020 Pond 613: BIORETENTION 7 Stage -Area -Storage Surface/Horizontal(Wetted Area (sq-ft) 500 1,000 1,500 2,000 2,500 3,000 3,500 4,000 4,500 5,000 5,500 6,000 6,500 " Surface ❑ Storage 416 I 415 1 1 1 , I I I I I I u I I I I I I I II I I �. i II 11 I , � I 414 I I I II I I I I I I i �. i II 11 I 413 1 II li n 1 1 1 I I I I I u I ar , I I 1 I I u I 1 I 11 I I i I n 1 1 1 —412 ____1I1J_L____ ____L_1__I____LI_ C 1 1 1 1 1 n 1 1 1 0 1 1 1 I I n I 1 I 11 I I i I n 1 1 1 W 411 410 1 1 1 II 1 1 l n 1 1 1 I I n I 1 I 11 I i i I II 1 I 1 409 1 n 1 II 1 1 I I I 1 I 11 I I i I u 1 I 1 1 u 1 406 III I 1 I 11 I I I II 1 I I Custom Stage Data IV 407 0 2,000 4,000 6,000 8,000 10,000 12,000 14,000 16,000 18,000 Storage (cubic -feet) 2020-07-24 Full Routing Prepared by Timmons GrOL Type/1 24-hr 1-YR Rainfall=3.05" Hydrograph for Pond 6P: BIORETENTION 1 Time Inflow Storage Elevation Primary (hours) (cfs) (cubic -feet) (feet) (cfs) 5.00 0.00 0 407.00 0.00 5.50 0.00 0 407.00 0.00 6.00 0.00 0 407.00 0.00 6.50 0.00 0 407.00 0.00 7.00 0.00 0 407.00 0.00 7.50 0.00 0 407.00 0.00 8.00 0.00 0 407.00 0.00 8.50 0.00 0 407.00 0.00 9.00 0.00 0 407.00 0.00 9.50 0.02 18 407.01 0.00 10.00 0.05 77 407.05 0.00 10.50 0.10 205 407.13 0.00 11.00 0.20 462 407.30 0.00 11.50 0.48 1,034 407.68 0.00 12.00 13.34 9,744 414.20 0.00 12.50 1.33 13,853 415.08 1.51 13.00 0.83 13,696 415.05 0.88 13.50 0.64 13,642 415.04 0.66 14.00 0.51 13,608 415.03 0.53 14.50 0.45 13,591 415.03 0.46 15.00 0.41 13,580 415.03 0.41 15.50 0.36 13,569 415.02 0.37 16.00 0.32 13,558 415.02 0.33 16.50 0.30 13,552 415.02 0.30 17.00 0.28 13,548 415.02 0.29 17.50 0.27 13,544 415.02 0.27 18.00 0.25 13,540 415.02 0.25 18.50 0.24 13,536 415.02 0.24 19.00 0.22 13,532 415.02 0.22 19.50 0.20 13,527 415.02 0.20 20.00 0.19 13,523 415.02 0.19 Printed 7/24/2020 2020-07-24 Full Routing Prepared by Timmons GrOL Elevation Primary (feet) (cfs) 407.00 0.00 407.10 0.00 407.20 0.00 407.30 0.00 407.40 0.00 407.50 0.00 407.60 0.00 407.70 0.00 407.80 0.00 407.90 0.00 408.00 0.00 408.10 0.00 408.20 0.00 408.30 0.00 408.40 0.00 408.50 0.00 408.60 0.00 408.70 0.00 408.80 0.00 408.90 0.00 409.00 0.00 409.10 0.00 409.20 0.00 409.30 0.00 409.40 0.00 409.50 0.00 409.60 0.00 409.70 0.00 409.80 0.00 409.90 0.00 410.00 0.00 410.10 0.00 410.20 0.00 410.30 0.00 410.40 0.00 410.50 0.00 410.60 0.00 410.70 0.00 410.80 0.00 410.90 0.00 411.00 0.00 411.10 0.00 411.20 0.00 411.30 0.00 411.40 0.00 411.50 0.00 411.60 0.00 411.70 0.00 411.80 0.00 411.90 0.00 412.00 0.00 412.10 0.00 Type/1 24-hr 1-YR Rainfall=3.05" Stage -Discharge for Pond 6P: BIORETENTION 1 Elevation Primary (feet) (cfs) 412.20 0.00 412.30 0.00 412.40 0.00 412.50 0.00 412.60 0.00 412.70 0.00 412.80 0.00 412.90 0.00 413.00 0.00 413.10 0.00 413.20 0.00 413.30 0.00 413.40 0.00 413.50 0.00 413.60 0.00 413.70 0.00 413.80 0.00 413.90 0.00 414.00 0.00 414.10 0.00 414.20 0.00 414.30 0.00 414.40 0.00 414.50 0.00 414.60 0.00 414.70 0.00 414.80 0.00 414.90 0.00 415.00 0.00 415.10 1.95 415.20 5.51 415.30 10.13 415.40 15.59 415.50 21.79 415.60 28.65 415.70 36.10 415.80 44.10 415.90 52.63 416.00 61.64 Printed 7/24/2020 2020-07-24 Full Routing Prepared by Timmons GrOL Type/1 24-hr 1-YR Rainfall=3.05" Stage -Area -Storage for Pond 6P: BIORETENTION 1 Elevation Surface Storage (feet) (sq-ft) (cubic -feet) 407.00 3,808 0 407.10 3,808 152 407.20 3,808 305 407.30 3,808 457 407.40 3,808 609 407.50 3,808 762 407.60 3,808 914 407.70 3,808 1,066 407.80 3,808 1,219 407.90 3,808 1,371 408.00 3,808 1,523 408.10 3,808 1,676 408.20 3,808 1,828 408.30 3,808 1,980 408.40 3,808 2,132 408.50 3,808 2,285 408.60 3,808 2,437 408.70 3,808 2,589 408.80 3,808 2,742 408.90 3,808 2,894 409.00 3,808 3,046 409.10 3,808 3,199 409.20 3,808 3,351 409.30 3,808 3,503 409.40 3,808 3,656 409.50 3,808 3,808 409.60 3,808 3,960 409.70 3,808 4,113 409.80 3,808 4,265 409.90 3,808 4,417 410.00 3,808 4,570 410.10 3,808 4,722 410.20 3,808 4,874 410.30 3,808 5,027 410.40 3,808 5,179 410.50 3,808 5,331 410.60 3,808 5,484 410.70 3,808 5,636 410.80 3,808 5,788 410.90 3,808 5,940 411.00 3,808 6,093 411.10 3,808 6,188 411.20 3,808 6,283 411.30 3,808 6,378 411.40 3,808 6,474 411.50 3,808 6,569 411.60 3,808 6,664 411.70 3,808 6,759 411.80 3,808 6,854 411.90 3,808 6,950 412.00 3,808 7,045 412.10 3,808 7,140 Elevation Surface Storage (feet) (sq-ft) (cubic -feet) 412.20 3,808 7,235 412.30 3,808 7,330 412.40 3,808 7,426 412.50 3,808 7,521 412.60 3,808 7,616 412.70 3,808 7,711 412.80 3,808 7,806 412.90 3,808 7,902 413.00 3,808 7,997 413.10 3,808 8,092 413.20 3,808 8,187 413.30 3,808 8,282 413.40 3,808 8,378 413.50 3,808 8,473 413.60 3,808 8,568 413.70 3,808 8,663 413.80 3,808 8,758 413.90 3,808 8,854 414.00 3,808 8,949 414.10 3,945 9,336 414.20 4,081 9,738 414.30 4,218 10,153 414.40 4,354 10,581 414.50 4,491 11,024 414.60 4,628 11,479 414.70 4,764 11,949 414.80 4,901 12,432 414.90 5,037 12,929 415.00 5,174 13,440 415.10 5,316 13,964 415.20 5,458 14,503 415.30 5,601 15,056 415.40 5,743 15,623 415.50 5,885 16,205 415.60 6,027 16,800 415.70 6,169 17,410 415.80 6,312 18,034 415.90 6,454 18,672 416.00 6,596 19,325 Printed 7/24/2020 2020-07-24 Full Routing Prepared by Timmons GrOL Type/1 24-hr 1-YR Rainfall=3.05" Summary for Pond 8P: BIORETENTION 2 Printed 7/24/2020 Inflow Area = 1.690 ac, 61.54% Impervious, Inflow Depth > 1.44" for 1-YR event Inflow = 4.53 cfs @ 11.97 hrs, Volume= 0.202 of Outflow = 0.32 cfs @ 12.72 hrs, Volume= 0.075 af, Atten= 93%, Lag= 44.6 min Primary = 0.32 cfs @ 12.72 hrs, Volume= 0.075 of Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Peak Elev= 431.95' @ 12.72 hrs Surf.Area= 2,020 sf Storage= 5,603 cf Plug -Flow detention time= 214.6 min calculated for 0.075 of (37% of inflow) Center -of -Mass det. time= 129.1 min ( 915.7 - 786.7 ) 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' 24.0" Round HDPE_Round 24" 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= 3.14 sf #2 Device 1 431.91' 36.0" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads Primary OutFlow Max=0.23 cfs @ 12.72 hrs HW=431.95' (Free Discharge) L7=1HIDPE_Round 24" (Passes 0.23 cfs of 38.62 cfs potential flow) t2=Orif ice/G rate (Weir Controls 0.23 cfs @ 0.64 fps) 2020-07-24 Full Routing Prepared by Timmons GrOI W Type // 24-hr 1-YR Rainfall=3.05" Printed 7/24/2020 Pond 8P: BIORETENTION 2 Hydrograph _ J _ _ L _ J _ I. _ J _ _ _ _ .. _ J _ _ J I I I I I II I I I I 5 I I I I ISS cta I I I I I I I I I Inflow Area=1.690 ac I I I I I I Peak Elev=431.95' I I I I I I I I Storage=5,603 cf 9 li li li li I I I I I i I 2 ------------ I I 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 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 Time (hours) Pond 8P: BIORETENTION 2 Stage -Discharge Discharge (crs) ■ Inflow —11 ■ Primary A Primary 2020-07-24 Full Routing Prepared by Timmons GrOL Type // 24-hr 1-YR Rainfall=3.05" Pond 813: BIORETENTION 2 Stage -Area -Storage Printed 7/24/2020 0 200 400 600 Surface/Horizontal(Wetted Area (sq-ft) 800 1,000 1,200 1,400 1,600 1,800 2,000 2,200 2,400 i ii 433 i i n n 432 i i n n n 430 429 � ____rr__r_,__ __ r r___'r____r_____r r- u r u 427 r i u 426 r n Custom Stage Data Storage (cubic -feet) Surface ❑ Storage 2020-07-24 Full Routing Prepared by Timmons GrOL Type/1 24-hr 1-YR Rainfall=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 1 423.91 0.00 9.00 0.01 11 423.93 0.00 9.50 0.02 35 423.97 0.00 10.00 0.03 76 424.03 0.00 10.50 0.05 148 424.14 0.00 11.00 0.09 276 424.35 0.00 11.50 0.20 528 424.74 0.00 12.00 4.34 3,547 430.45 0.00 12.50 0.42 5,511 431.90 0.00 13.00 0.26 5,592 431.94 0.27 13.50 0.20 5,576 431.93 0.20 14.00 0.16 5,566 431.93 0.16 14.50 0.14 5,560 431.93 0.14 15.00 0.13 5,557 431.93 0.13 15.50 0.11 5,554 431.92 0.11 16.00 0.10 5,550 431.92 0.10 16.50 0.09 5,548 431.92 0.09 17.00 0.09 5,547 431.92 0.09 17.50 0.08 5,546 431.92 0.08 18.00 0.08 5,545 431.92 0.08 18.50 0.07 5,544 431.92 0.07 19.00 0.07 5,542 431.92 0.07 19.50 0.06 5,541 431.92 0.06 20.00 0.06 5,540 431.92 0.06 Printed 7/24/2020 2020-07-24 Full Routing Prepared by Timmons GrOL 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/1 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 25.44 432.85 28.09 432.91 30.82 432.97 33.63 433.03 36.02 433.09 36.97 433.15 37.90 433.21 38.81 Printed 7/24/2020 Elevation Primary (feet) (cfs) 433.27 39.69 433.33 40.56 433.39 41.41 433.45 42.24 433.51 43.00 433.57 43.16 433.63 43.32 433.69 43.47 433.75 43.63 433.81 43.79 433.87 43.95 433.93 44.10 433.99 44.26 2020-07-24 Full Routing Prepared by Timmons GrOL Type/1 24-hr 1-YR Rainfall=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 7/24/2020 2020-07-24 Full Routing Prepared by Timmons GrOL Type/1 24-hr 1-YR Rainfall=3.05" Summary for Pond 10P: Storage Pipe 320x60 Printed 7/24/2020 Inflow Area = 8.480 ac, 23.11 % Impervious, Inflow Depth > 0.66" for 1-YR event Inflow = 10.47 cfs @ 11.99 hrs, Volume= 0.466 of Outflow = 2.22 cfs @ 12.17 hrs, Volume= 0.463 af, Atten= 79%, Lag= 11.3 min Primary = 2.22 cfs @ 12.17 hrs, Volume= 0.463 of Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Peak Elev= 416.48' @ 12.17 hrs Surf.Area= 2,159 sf Storage= 5,913 cf Plug -Flow detention time= 25.9 min calculated for 0.463 of (99% of inflow) Center -of -Mass det. time= 23.0 min ( 843.9 - 821.0 ) Volume Invert Avail.Storage Storage Description #1 413.20' 9,503 cf 66.0" Round Pipe Storage L= 400.0' Device Routing Invert Outlet Devices #1 Primary 413.20' 36.0" Round Culvert L= 10.0' CPP, projecting, no headwall, Ke= 0.900 Inlet / Outlet Invert= 413.20' / 413.10' S= 0.0100 '/' Cc= 0.900 n= 0.013 Concrete pipe, bends & connections, Flow Area= 7.07 sf #2 Device 1 413.20' 7.0" Vert. Orifice/Grate C= 0.600 #3 Device 1 416.50' Custom Weir/Orifice, Cv= 2.62 (C= 3.28) Head (feet) 0.00 1.58 2.20 Width (feet) 5.39 3.48 0.00 Primary OutFlow Max=2.22 cfs @ 12.17 hrs HW=416.47' (Free Discharge) t1=Culvert (Passes 2.22 cfs of 34.03 cfs potential flow) �2=Orifice/Grate (Orifice Controls 2.22 cfs @ 8.31 fps) 3=Custom Weir/Orifice ( Controls 0.00 cfs) 2020-07-24 Full Routing Prepared by Timmons GrOL 114 4 3 5 41 41 a a c 41 m w 41 41 Type ll 24-hr 1-YR Rainfall=3.05" Printed 7/24/2020 Pond 10P: Storage Pipe 320x60 Hydrograph I I i i I I I U 4] ---- ------------ 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 sM a I I 1 I I I I I I i Infib W Area=0.-48G a Qealk F.lev-416.4811 _ _ _ _'_ Stbragem5a91.3_ of -- _J 1 L _J _L 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 7 8 9 10 11 12 13 14 Time (hours) Pond 10P: Storage Pipe 320x60 Stage -Discharge Discharge (cfs) ® Inflow ■ Primary ❑ Primary 2020-07-24 Full Routing Prepared by Timmons GrOI I Type // 24-hr 1-YR Rainfall=3.05" Pond 10P: Storage Pipe 320x60 Stage -Area -Storage Printed 7/24/2020 ❑ Storage 2020-07-24 Full Routing Prepared by Timmons GrOL Type/1 24-hr 1-YR Rainfall=3.05" Hydrograph for Pond 10P: Storage Pipe 320x60 Time Inflow Storage Elevation Primary (hours) (cfs) (cubic -feet) (feet) (cfs) 5.00 0.00 0 413.20 0.00 5.50 0.00 0 413.20 0.00 6.00 0.00 0 413.20 0.00 6.50 0.00 0 413.20 0.00 7.00 0.00 0 413.20 0.00 7.50 0.00 0 413.20 0.00 8.00 0.00 0 413.20 0.00 8.50 0.00 0 413.20 0.00 9.00 0.00 0 413.20 0.00 9.50 0.00 0 413.20 0.00 10.00 0.00 0 413.20 0.00 10.50 0.00 0 413.20 0.00 11.00 0.00 0 413.20 0.00 11.50 0.00 0 413.20 0.00 12.00 10.29 3,980 415.60 1.87 12.50 1.19 5,204 416.16 2.10 13.00 0.77 3,386 415.32 1.74 13.50 0.60 1,831 414.56 1.33 14.00 0.48 803 413.97 0.89 14.50 0.43 381 413.66 0.52 15.00 0.39 306 413.60 0.41 15.50 0.35 276 413.57 0.37 16.00 0.31 248 413.54 0.33 16.50 0.29 230 413.53 0.30 17.00 0.28 220 413.52 0.29 17.50 0.27 210 413.51 0.27 18.00 0.25 201 413.50 0.26 18.50 0.24 191 413.49 0.24 19.00 0.22 180 413.48 0.23 19.50 0.20 170 413.47 0.21 20.00 0.19 159 413.45 0.19 Printed 7/24/2020 2020-07-24 Full Routing Prepared by Timmons GrOL Elevation Primary (feet) (cfs) 413.20 0.00 413.24 0.01 413.28 0.02 413.32 0.05 413.36 0.08 413.40 0.12 413.44 0.17 413.48 0.23 413.52 0.29 413.56 0.35 413.60 0.42 413.64 0.49 413.68 0.56 413.72 0.62 413.76 0.67 413.80 0.71 413.84 0.76 413.88 0.80 413.92 0.84 413.96 0.88 414.00 0.92 414.04 0.95 414.08 0.99 414.12 1.02 414.16 1.05 414.20 1.08 414.24 1.11 414.28 1.14 414.32 1.17 414.36 1.20 414.40 1.23 414.44 1.25 414.48 1.28 414.52 1.30 414.56 1.33 414.60 1.35 414.64 1.38 414.68 1.40 414.72 1.43 414.76 1.45 414.80 1.47 414.84 1.49 414.88 1.52 414.92 1.54 414.96 1.56 415.00 1.58 415.04 1.60 415.08 1.62 415.12 1.64 415.16 1.66 415.20 1.68 415.24 1.70 Type/1 24-hr 1-YR Rainfall=3.05" Stage -Discharge for Pond 10P: Storage Pipe 320x60 Elevation Primary (feet) (cfs) 415.28 1.72 415.32 1.74 415.36 1.76 415.40 1.78 415.44 1.80 415.48 1.81 415.52 1.83 415.56 1.85 415.60 1.87 415.64 1.89 415.68 1.90 415.72 1.92 415.76 1.94 415.80 1.96 415.84 1.97 415.88 1.99 415.92 2.01 415.96 2.02 416.00 2.04 416.04 2.05 416.08 2.07 416.12 2.09 416.16 2.10 416.20 2.12 416.24 2.13 416.28 2.15 416.32 2.16 416.36 2.18 416.40 2.19 416.44 2.21 416.48 2.22 416.52 2.29 416.56 2.51 416.60 2.82 416.64 3.20 416.68 3.62 416.72 4.10 416.76 4.61 416.80 5.16 416.84 5.75 416.88 6.36 416.92 7.01 416.96 7.68 417.00 8.37 417.04 9.09 417.08 9.83 417.12 10.59 417.16 11.37 417.20 12.17 417.24 12.98 417.28 13.81 417.32 14.66 Elevation Primary (feet) (cfs) 417.36 15.52 417.40 16.40 417.44 17.29 417.48 18.19 417.52 19.10 417.56 20.03 417.60 20.96 417.64 21.91 417.68 22.87 417.72 23.83 417.76 24.80 417.80 25.78 417.84 26.77 417.88 27.77 417.92 28.77 417.96 29.78 418.00 30.80 418.04 31.82 418.08 32.85 418.12 33.87 418.16 34.90 418.20 35.92 418.24 36.94 418.28 37.94 418.32 38.93 418.36 39.91 418.40 40.87 418.44 41.81 418.48 42.74 418.52 43.64 418.56 44.52 418.60 45.38 418.64 46.22 418.68 47.03 Printed 7/24/2020 2020-07-24 Full Routing Prepared by Timmons GrOL Type/1 24-hr 1-YR Rainfall=3.05" Stage -Area -Storage for Pond 10P: Storage Pipe 320x60 Elevation Storage (feet) (cubic -feet) 413.20 0 413.24 10 413.28 28 413.32 52 413.36 79 413.40 ill 413.44 145 413.48 182 413.52 222 413.56 265 413.60 309 413.64 356 413.68 405 413.72 455 413.76 508 413.80 562 413.84 618 413.88 675 413.92 733 413.96 793 414.00 855 414.04 918 414.08 981 414.12 1,047 414.16 1,113 414.20 1,180 414.24 1,249 414.28 1,318 414.32 1,388 414.36 1,460 414.40 1,532 414.44 1,605 414.48 1,679 414.52 1,754 414.56 1,829 414.60 1,906 414.64 1,983 414.68 2,060 414.72 2,139 414.76 2,218 414.80 2,297 414.84 2,378 414.88 2,458 414.92 2,540 414.96 2,622 415.00 2,704 415.04 2,787 415.08 2,870 415.12 2,954 415.16 3,038 415.20 3,122 415.24 3,207 Elevation Storage (feet) (cubic -feet) 415.28 3,292 415.32 3,378 415.36 3,464 415.40 3,550 415.44 3,636 415.48 3,723 415.52 3,810 415.56 3,897 415.60 3,984 415.64 4,071 415.68 4,159 415.72 4,246 415.76 4,334 415.80 4,422 415.84 4,510 415.88 4,598 415.92 4,686 415.96 4,774 416.00 4,862 416.04 4,950 416.08 5,038 416.12 5,125 416.16 5,213 416.20 5,301 416.24 5,388 416.28 5,476 416.32 5,563 416.36 5,650 416.40 5,737 416.44 5,824 416.48 5,910 416.52 5,997 416.56 6,083 416.60 6,168 416.64 6,254 416.68 6,339 416.72 6,423 416.76 6,508 416.80 6,591 416.84 6,675 416.88 6,758 416.92 6,841 416.96 6,923 417.00 7,004 417.04 7,085 417.08 7,166 417.12 7,246 417.16 7,325 417.20 7,404 417.24 7,482 417.28 7,559 417.32 7,636 Elevation Storage (feet) (cubic -feet) 417.36 7,712 417.40 7,787 417.44 7,861 417.48 7,935 417.52 8,008 417.56 8,079 417.60 8,150 417.64 8,220 417.68 8,289 417.72 8,357 417.76 8,424 417.80 8,489 417.84 8,554 417.88 8,617 417.92 8,679 417.96 8,740 418.00 8,799 418.04 8,857 418.08 8,914 418.12 8,969 418.16 9,022 418.20 9,073 418.24 9,123 418.28 9,171 418.32 9,216 418.36 9,260 418.40 9,301 418.44 9,340 418.48 9,376 418.52 9,409 418.56 9,438 418.60 9,464 418.64 9,485 418.68 9,500 Printed 7/24/2020 2020-07-24 Full Routing Prepared by Timmons GrOL Type/1 24-hr 1-YR Rainfall=3.05" Printed 7/24/2020 Summary for Link 3L: (new Link) Inflow Area = 17.100 ac, 6.20% Impervious, Inflow Depth > 0.37" for 1-YR event Inflow = 10.18 cfs @ 12.00 hrs, Volume= 0.531 of Primary = 10.18 cfs @ 12.00 hrs, Volume= 0.531 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Link 3L: (new Link) Hydrograph ❑ Inflow ❑Primary Inflow Area=17.100 ac 8 7 - - - - - -- _ -' 3 0 4 ---'--------i-------`---J ---'----`---i-------`-------`-_ 2- r----r r___r i r----r r---�----r-- 1 0, 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Time (hours) 2020-07-24 Full Routing Prepared by Timmons GrOL Type/1 24-hr 1-YR Rainfall=3.05" Hydrograph for Link 3L: (new Link) 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 0.01 0.00 0.01 11.50 0.03 0.00 0.03 11.75 0.36 0.00 0.36 12.00 10.17 0.00 10.17 12.25 2.12 0.00 2.12 12.50 1.49 0.00 1.49 12.75 1.14 0.00 1.14 13.00 0.99 0.00 0.99 13.25 0.88 0.00 0.88 13.50 0.79 0.00 0.79 13.75 0.72 0.00 0.72 14.00 0.65 0.00 0.65 14.25 0.61 0.00 0.61 14.50 0.59 0.00 0.59 14.75 0.56 0.00 0.56 15.00 0.54 0.00 0.54 15.25 0.52 0.00 0.52 15.50 0.49 0.00 0.49 15.75 0.46 0.00 0.46 16.00 0.43 0.00 0.43 16.25 0.42 0.00 0.42 16.50 0.41 0.00 0.41 16.75 0.40 0.00 0.40 17.00 0.39 0.00 0.39 17.25 0.38 0.00 0.38 17.50 0.37 0.00 0.37 17.75 0.37 0.00 0.37 Time Inflow Elevation Primary (hours) (cfs) (feet) (cfs) 18.00 0.36 0.00 0.36 18.25 0.35 0.00 0.35 18.50 0.33 0.00 0.33 18.75 0.32 0.00 0.32 19.00 0.31 0.00 0.31 19.25 0.30 0.00 0.30 19.50 0.29 0.00 0.29 19.75 0.28 0.00 0.28 20.00 0.27 0.00 0.27 Printed 7/24/2020 2020-07-24 Full Routing Prepared by Timmons GrOL Type/1 24-hr 1-YR Rainfall=3.05" Printed 7/24/2020 Summary for Link 13L: Link 1 Inflow Area = 17.660 ac, 36.69% Impervious, Inflow Depth > 0.61" for 1-YR event Inflow = 4.30 cfs @ 12.29 hrs, Volume= 0.900 of Primary = 4.30 cfs @ 12.29 hrs, Volume= 0.900 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Link 13L: Link 1 Hydrograph FE ]—I n—fl.—. ❑ Primary Time (hours) 2020-07-24 Full Routing Prepared by Timmons GrOL Type/1 24-hr 1-YR Rainfall=3.05" Hydrograph for Link 13L: Link 1 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 0.00 0.00 0.00 11.75 0.28 0.00 0.28 12.00 3.20 0.00 3.20 12.25 4.27 0.00 4.27 12.50 3.77 0.00 3.77 12.75 3.41 0.00 3.41 13.00 3.00 0.00 3.00 13.25 2.62 0.00 2.62 13.50 2.28 0.00 2.28 13.75 1.95 0.00 1.95 14.00 1.64 0.00 1.64 14.25 1.37 0.00 1.37 14.50 1.18 0.00 1.18 14.75 1.08 0.00 1.08 15.00 1.01 0.00 1.01 15.25 0.96 0.00 0.96 15.50 0.90 0.00 0.90 15.75 0.85 0.00 0.85 16.00 0.80 0.00 0.80 16.25 0.76 0.00 0.76 16.50 0.73 0.00 0.73 16.75 0.72 0.00 0.72 17.00 0.70 0.00 0.70 17.25 0.68 0.00 0.68 17.50 0.66 0.00 0.66 17.75 0.64 0.00 0.64 Time Inflow Elevation Primary (hours) (cfs) (feet) (cfs) 18.00 0.62 0.00 0.62 18.25 0.60 0.00 0.60 18.50 0.58 0.00 0.58 18.75 0.56 0.00 0.56 19.00 0.54 0.00 0.54 19.25 0.52 0.00 0.52 19.50 0.50 0.00 0.50 19.75 0.48 0.00 0.48 20.00 0.46 0.00 0.46 Printed 7/24/2020 2020-07-24 Full Routing Type // 24-hr 10-YR Rainfall=5.58" Prepared by Timmons Group Printed 7/24/2020 HydroCAD® 10.00-25 s/n 08663 © 2019 HydroCAD Software Solutions LLC Page 41 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 SubcatchmentlS: PRE Onsite Runoff Area=15.630 ac 3.39% Impervious Runoff Depth>1.56" Tc=6.0 min CN=61 Runoff=46.44 cfs 2.028 of Subcatchment2S: Pre Offsite Runoff Area=1.470 ac 36.05% Impervious Runoff Depth>2.61" Tc=6.0 min CN=74 Runoff=7.17 cfs 0.320 of S u bcatch ment4S: 0 nsite To B io retention 1 Runoff Area=4.680ac 57.91%Impervious Runoff Depth>3.36" Tc=6.0 min CN=82 Runoff=28.38 cfs 1.309 of Subcatchment5S: Offsite To Bioretention 1 Runoff Area=1.470 ac 36.05% Impervious Runoff Depth>2.61" Tc=6.0 min CN=74 Runoff=7.17 cfs 0.320 of Subcatchment7S: To Bioretention2 Runoff Area=1.690 ac 61.54% Impervious Runoff Depth>3.55" Tc=6.0 min CN=84 Runoff=10.72 cfs 0.500 of Subcatchment9S: To Storage Pipe Runoff Area=8.480 ac 23.11 % Impervious Runoff Depth>2.27" Tc=6.0 min CN=70 Runoff=36.22 cfs 1.602 of Subcatchmentl1S: Onsite Unrouted4 Runoff Area=1.060 ac 16.98% Impervious Runoff Depth>2.02" Tc=6.0 min CN=67 Runoff=4.09 cfs 0.178 of Subcatchmentl2S: Onsite Unrouted 5 Runoff Area=0.280 ac 21.43% Impervious Runoff Depth>2.18" Tc=6.0 min CN=69 Runoff=1.17 cfs 0.051 of Pond 6P: BIORETENTION 1 Peak Elev=415.68' Storage=17,288 cf Inflow=35.54 cfs 1.628 of Outflow=34.62 cfs 1.317 of Pond 8P: BIORETENTION2 Peak EIev=432.40' Storage=6,546 cf Inflow=10.72 cfs 0.500 of Outflow=10.53 cfs 0.373 of Pond 10P: Storage Pipe 320x60 Peak EIev=418.21' Storage=9,081 cf Inflow=36.22 cfs 1.602 of Outflow=36.07 cfs 1.594 of Link 3L: (new Link) Inflow=53.64 cfs 2.348 of Primary=53.64 cfs 2.348 of Link 13L: Link 1 Inflow=86.40 cfs 3.513 of Primary=86.40 cfs 3.513 of Total Runoff Area = 34.760 ac Runoff Volume = 6.308 of Average Runoff Depth = 2.18" 78.31% Pervious = 27.220 ac 21.69% Impervious = 7.540 ac 2020-07-24 Full Routing Prepared by Timmons GrOL Type/1 24-hr 10-YR Rainfall=5.58" Summary for Subcatchment 1S: PRE Onsite Runoff = 46.44 cfs @ 11.98 hrs, Volume= 2.028 af, Depth> 1.56" Printed 7/24/2020 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 0.530 98 Paved parking, HSG B 0.000 61 >75% Grass cover, Good, HSG B 15.100 60 Woods, Fair, HSG B 15.630 61 Weighted Average 15.100 96.61 % Pervious Area 0.530 3.39% Impervious Area Tc Length Description 6.0 Direct Entry, Subcatchment 1S: PRE Onsite Hydrograph 52 _J____1____I____1____ L--- J____i____I____i____L. '1 -T 48 � _J 46 I ---,----T------------- ---- -- --------T---- Type II 24-hr 42 -_-_-,-_-_-_-T--_-_-�_-_-_-,-_-_-_--_-_-_,-_-_ -_-_-_-I-_-- 10-YR Rainfall=5.58" 4 _J _1 _I _1 I I I I _L _I I I _I I 36 ; ---,----T r-- ----'--Runoff Area=15.630 ac 36 ---J----1----1----L----L---J-- ----I-- 32 _____ ____I_Runoff'Volume=2.028 of 30 ; ---- 26 -, -T O 222 -1 -I -L -0 Mr i_n4 LL -,I -T -rI -r I 20 _J _, _I _ I. _I _I _i _L _L 18 - I---- 16 12 ___�____. 10 8 ---J----i----I____1_ I _I_---J_ I 4 ___J----1------ --_1_ _L___J_ _} __L___J--__J-___I--__4--- 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Time (hours) � Runoff 2020-07-24 Full Routing Prepared by Timmons GrOL Type/1 24-hr 10-YR Rainfall=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 0.24 11.50 1.58 0.01 0.70 11.75 2.16 0.11 7.18 12.00 3.70 0.66 45.16 12.25 3.94 0.78 7.28 12.50 4.10 0.86 4.88 12.75 4.21 0.92 3.65 13.00 4.31 0.97 3.10 13.25 4.39 1.02 2.71 13.50 4.46 1.06 2.41 13.75 4.52 1.09 2.15 14.00 4.58 1.12 1.92 14.25 4.63 1.15 1.79 14.50 4.67 1.18 1.72 14.75 4.72 1.20 1.64 15.00 4.76 1.23 1.56 15.25 4.80 1.25 1.48 15.50 4.84 1.27 1.40 15.75 4.88 1.30 1.32 16.00 4.91 1.32 1.23 16.25 4.94 1.33 1.18 16.50 4.97 1.35 1.15 16.75 5.00 1.37 1.13 17.00 5.03 1.39 1.10 17.25 5.06 1.41 1.07 17.50 5.09 1.42 1.04 17.75 5.11 1.44 1.01 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 18.00 5.14 1.45 0.98 18.25 5.16 1.47 0.95 18.50 5.19 1.48 0.92 18.75 5.21 1.50 0.89 19.00 5.23 1.51 0.85 19.25 5.25 1.52 0.82 19.50 5.27 1.54 0.79 19.75 5.29 1.55 0.76 20.00 5.31 1.56 0.73 Printed 7/24/2020 2020-07-24 Full Routing Prepared by Timmons GrOL Type/1 24-hr 10-YR Rainfall=5.58" Printed 7/24/2020 Summary for Subcatchment 2S: Pre Offsite Runoff = 7.17 cfs @ 11.97 hrs, Volume= 0.320 af, Depth> 2.61" 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 0.530 98 Paved parking, HSG B 0.000 61 >75% Grass cover, Good, HSG B 0.940 60 Woods, Fair, HSG B 1.470 74 Weighted Average 0.940 63.95% Pervious Area 0.530 36.05% Impervious Area Tc Length Description 6.0 Direct Entry, Subcatchment 2S: Pre Offsite Hydrograph I F 7 I I I 6 -------I-----------I---- - I I I I I I I I I I I I 5.. I I I I I I I I I I I I I N I I 4 3 0 I I LL I I I 3 I i I I I I � I 2 I I I I I I I I I I I I I I I I Type II 24-hr 10-YR Rainfall=5.58" Runoff Area=1.470 ac Runoff Volume=0.320 of Runoff Depth>2.61" Tc=6.0 min -------------- CN=;74 I I I I I I I I I I I I i I I I I I 10 11 12 13 14 15 16 17 18 19 20 ❑ Runoff 2020-07-24 Full Routing Prepared by Timmons GrOL Type/1 24-hr 10-YR Rainfall=5.58" Hydrograph for Subcatchment 2S: Pre Offsite 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 0.01 9.00 0.82 0.00 0.01 9.25 0.86 0.01 0.02 9.50 0.91 0.01 0.03 9.75 0.96 0.02 0.03 10.00 1.01 0.02 0.05 10.25 1.07 0.03 0.06 10.50 1.14 0.05 0.08 10.75 1.22 0.07 0.11 11.00 1.31 0.09 0.15 11.25 1.43 0.12 0.21 11.50 1.58 0.17 0.31 11.75 2.16 0.43 1.79 12.00 3.70 1.38 6.88 12.25 3.94 1.55 1.01 12.50 4.10 1.67 0.66 12.75 4.21 1.75 0.49 13.00 4.31 1.83 0.41 13.25 4.39 1.89 0.36 13.50 4.46 1.94 0.31 13.75 4.52 1.99 0.28 14.00 4.58 2.03 0.25 14.25 4.63 2.07 0.23 14.50 4.67 2.11 0.22 14.75 4.72 2.14 0.21 15.00 4.76 2.18 0.20 15.25 4.80 2.21 0.19 15.50 4.84 2.24 0.18 15.75 4.88 2.27 0.17 16.00 4.91 2.29 0.15 16.25 4.94 2.32 0.15 16.50 4.97 2.34 0.14 16.75 5.00 2.37 0.14 17.00 5.03 2.39 0.14 17.25 5.06 2.41 0.13 17.50 5.09 2.43 0.13 17.75 5.11 2.46 0.13 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 18.00 5.14 2.48 0.12 18.25 5.16 2.50 0.12 18.50 5.19 2.51 0.11 18.75 5.21 2.53 0.11 19.00 5.23 2.55 0.11 19.25 5.25 2.57 0.10 19.50 5.27 2.58 0.10 19.75 5.29 2.60 0.09 20.00 5.31 2.62 0.09 Printed 7/24/2020 2020-07-24 Full Routing Prepared by Timmons GrOL Type/1 24-hr 10-YR Rainfall=5.58" Printed 7/24/2020 Summary for Subcatchment 4S: Onsite To Bioretention 1 Runoff = 28.38 cfs @ 11.97 hrs, Volume= 1.309 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 2.710 98 Paved parking, HSG B 1.510 61 >75% Grass cover, Good, HSG B 0.460 60 Woods, Fair, HSG B 4.680 82 Weighted Average 1.970 42.09% Pervious Area 2.710 57.91% Impervious Area Tc Length in 1 Description Direct Entry, Subcatchment 4S: Onsite To Bioretention 1 Hydrograph 28. - Type II 24-hr --- 10-YR Rainfall=5.58" --- Runoff Area=4.680 ac 'Runoff Volume=1.309 of ---- Runoff Depth;> 36" Trc=6',0 min -Y F -Y -h -I -Y t - - - -II --- ----III --- f N=82 ,- - -; - -- - - - 'I ,- I 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Time (hours) ❑ Runoff 2020-07-24 Full Routing Prepared by Timmons GrOL Type/1 24-hr 10-YR Rainfall=5.58" Printed 7/24/2020 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 0.00 6.25 0.47 0.00 0.01 6.50 0.50 0.00 0.02 6.75 0.52 0.00 0.03 7.00 0.55 0.01 0.05 7.25 0.58 0.01 0.06 7.50 0.61 0.01 0.07 7.75 0.64 0.02 0.09 8.00 0.67 0.02 0.10 8.25 0.70 0.03 0.12 8.50 0.74 0.04 0.15 8.75 0.78 0.05 0.18 9.00 0.82 0.06 0.22 9.25 0.86 0.07 0.24 9.50 0.91 0.08 0.26 9.75 0.96 0.10 0.31 10.00 1.01 0.12 0.37 10.25 1.07 0.14 0.45 10.50 1.14 0.17 0.54 10.75 1.22 0.20 0.68 11.00 1.31 0.25 0.86 11.25 1.43 0.31 1.17 11.50 1.58 0.39 1.61 11.75 2.16 0.76 8.26 12.00 3.70 1.95 26.80 12.25 3.94 2.15 3.76 12.50 4.10 2.29 2.44 12.75 4.21 2.39 1.79 13.00 4.31 2.47 1.50 13.25 4.39 2.54 1.30 13.50 4.46 2.60 1.14 13.75 4.52 2.65 1.01 14.00 4.58 2.70 0.90 14.25 4.63 2.75 0.83 14.50 4.67 2.79 0.79 14.75 4.72 2.83 0.75 15.00 4.76 2.87 0.72 15.25 4.80 2.90 0.68 15.50 4.84 2.94 0.64 15.75 4.88 2.97 0.60 16.00 4.91 3.00 0.55 16.25 4.94 3.03 0.53 16.50 4.97 3.05 0.52 16.75 5.00 3.08 0.50 17.00 5.03 3.11 0.49 17.25 5.06 3.13 0.47 17.50 5.09 3.16 0.46 17.75 5.11 3.18 0.45 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 18.00 5.14 3.20 0.43 18.25 5.16 3.23 0.42 18.50 5.19 3.25 0.40 18.75 5.21 3.27 0.39 19.00 5.23 3.29 0.37 19.25 5.25 3.31 0.36 19.50 5.27 3.33 0.34 19.75 5.29 3.34 0.33 20.00 5.31 3.36 0.31 2020-07-24 Full Routing Prepared by Timmons GrOL Type/1 24-hr 10-YR Rainfall=5.58" Printed 7/24/2020 Summary for Subcatchment 5S: Offsite To Bioretention 1 Runoff = 7.17 cfs @ 11.97 hrs, Volume= 0.320 af, Depth> 2.61" 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 0.530 98 Paved parking, HSG B 0.000 61 >75% Grass cover, Good, HSG B 0.940 60 Woods, Fair, HSG B 1.470 74 Weighted Average 0.940 63.95% Pervious Area 0.530 36.05% Impervious Area Tc Length Description 6.0 Direct Entry, Subcatchment 5S: Offsite To Bioretention 1 Hydrograph I F 7 I I 6 I I I I I I I I I I I I I I 5... I I I I I I I I I N I I 4 3 0 I I LL I I I 3 I i I I I I � I 2 I I I I I I I I I I I I I I I I Type II 24-hr 10-YR Rainfall=5.58" Runoff Area=1.470 ac Runoff Volume=0.320 of Runoff Depth>2.61" Tc=6.0 min -------------- CN=;74 I I I I I I I I I I I I i I I I I I 10 11 12 13 14 15 16 17 18 19 20 ❑ Runoff 2020-07-24 Full Routing Prepared by Timmons GrOL Type/1 24-hr 10-YR Rainfall=5.58" Printed 7/24/2020 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 0.01 9.00 0.82 0.00 0.01 9.25 0.86 0.01 0.02 9.50 0.91 0.01 0.03 9.75 0.96 0.02 0.03 10.00 1.01 0.02 0.05 10.25 1.07 0.03 0.06 10.50 1.14 0.05 0.08 10.75 1.22 0.07 0.11 11.00 1.31 0.09 0.15 11.25 1.43 0.12 0.21 11.50 1.58 0.17 0.31 11.75 2.16 0.43 1.79 12.00 3.70 1.38 6.88 12.25 3.94 1.55 1.01 12.50 4.10 1.67 0.66 12.75 4.21 1.75 0.49 13.00 4.31 1.83 0.41 13.25 4.39 1.89 0.36 13.50 4.46 1.94 0.31 13.75 4.52 1.99 0.28 14.00 4.58 2.03 0.25 14.25 4.63 2.07 0.23 14.50 4.67 2.11 0.22 14.75 4.72 2.14 0.21 15.00 4.76 2.18 0.20 15.25 4.80 2.21 0.19 15.50 4.84 2.24 0.18 15.75 4.88 2.27 0.17 16.00 4.91 2.29 0.15 16.25 4.94 2.32 0.15 16.50 4.97 2.34 0.14 16.75 5.00 2.37 0.14 17.00 5.03 2.39 0.14 17.25 5.06 2.41 0.13 17.50 5.09 2.43 0.13 17.75 5.11 2.46 0.13 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 18.00 5.14 2.48 0.12 18.25 5.16 2.50 0.12 18.50 5.19 2.51 0.11 18.75 5.21 2.53 0.11 19.00 5.23 2.55 0.11 19.25 5.25 2.57 0.10 19.50 5.27 2.58 0.10 19.75 5.29 2.60 0.09 20.00 5.31 2.62 0.09 2020-07-24 Full Routing Prepared by Timmons GrOL Type/1 24-hr 10-YR Rainfall=5.58" Printed 7/24/2020 Summary for Subcatchment 7S: To Bioretention 2 Runoff = 10.72 cfs @ 11.97 hrs, Volume= 0.500 af, Depth> 3.55" 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 1.040 98 Paved parking, HSG B 0.640 61 >75% Grass cover, Good, HSG B 0.010 60 Woods, Fair, HSG B 1.690 84 Weighted Average 0.650 38.46% Pervious Area 1.040 61.54% Impervious Area Tc Length Description 6.0 Direct Entry, Subcatchment 7S: To Bioretention 2 Hydrograph 12 11 -- Type II 24-hr 10 -- -- 10-YR Rainfall=5.58" 9 8 ---,-- Runoff Area=1.690 ac --- -- Runoff Volume=0.500 of 7.; --- -Runoff Depth>3.55" 3 ° 6 - Tc=6.0 min '- -- --' CN=84 3; 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Time (hours) ❑ Runoff 2020-07-24 Full Routing Prepared by Timmons GrOL Type/1 24-hr 10-YR Rainfall=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 0.01 6.00 0.45 0.00 0.01 6.25 0.47 0.00 0.01 6.50 0.50 0.01 0.02 6.75 0.52 0.01 0.02 7.00 0.55 0.01 0.03 7.25 0.58 0.02 0.03 7.50 0.61 0.02 0.04 7.75 0.64 0.03 0.04 8.00 0.67 0.04 0.05 8.25 0.70 0.05 0.06 8.50 0.74 0.06 0.07 8.75 0.78 0.07 0.08 9.00 0.82 0.08 0.10 9.25 0.86 0.10 0.11 9.50 0.91 0.11 0.12 9.75 0.96 0.13 0.13 10.00 1.01 0.16 0.16 10.25 1.07 0.18 0.19 10.50 1.14 0.22 0.23 10.75 1.22 0.26 0.28 11.00 1.31 0.31 0.35 11.25 1.43 0.37 0.47 11.50 1.58 0.46 0.64 11.75 2.16 0.86 3.22 12.00 3.70 2.11 10.09 12.25 3.94 2.32 1.40 12.50 4.10 2.46 0.91 12.75 4.21 2.56 0.67 13.00 4.31 2.64 0.56 13.25 4.39 2.72 0.48 13.50 4.46 2.78 0.42 13.75 4.52 2.84 0.38 14.00 4.58 2.88 0.33 14.25 4.63 2.93 0.31 14.50 4.67 2.97 0.29 14.75 4.72 3.01 0.28 15.00 4.76 3.05 0.26 15.25 4.80 3.09 0.25 15.50 4.84 3.13 0.23 15.75 4.88 3.16 0.22 16.00 4.91 3.19 0.21 16.25 4.94 3.22 0.20 16.50 4.97 3.25 0.19 16.75 5.00 3.27 0.19 17.00 5.03 3.30 0.18 17.25 5.06 3.33 0.18 17.50 5.09 3.35 0.17 17.75 5.11 3.37 0.16 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 18.00 5.14 3.40 0.16 18.25 5.16 3.42 0.15 18.50 5.19 3.44 0.15 18.75 5.21 3.46 0.14 19.00 5.23 3.48 0.14 19.25 5.25 3.50 0.13 19.50 5.27 3.52 0.13 19.75 5.29 3.54 0.12 20.00 5.31 3.56 0.12 Printed 7/24/2020 2020-07-24 Full Routing Prepared by Timmons GrOL Type/1 24-hr 10-YR Rainfall=5.58" Summary for Subcatchment 9S: To Storage Pipe Runoff = 36.22 cfs @ 11.97 hrs, Volume= 1.602 af, Depth> 2.27" Printed 7/24/2020 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 1.960 98 Paved parking, HSG B 6.520 61 >75% Grass cover, Good, HSG B 0.000 60 Woods, Fair, HSG B 8.480 70 Weighted Average 6.520 76.89% Pervious Area 1.960 23.11% Impervious Area Tc Length Description 6.0 Direct Entry, Subcatchment 9S: To Storage Pipe Hydrograph ---J----'------------ ---------------- --- ------------ --- 46 I ---J----i----'----J----I----L----J----I----J----L---L----L----I----J---- 36 --------+____+___+__--------+----+---+-17 pe-W243hr- 32 ------------------- r - - -,-- - - - -I ;ID-Y� R n I[;= ,58" - 3 i I I I I I --- - - --------------- -------RUnbff-Ar"--B.4801ac - I 28 ----i---- i ----i-------i----I-- r -- itoffl,Voyurnip=t6oZaf- 24 ____________--- ________________________________________________ 22 , I Runoff- Dept�2.27"- - 3 20 ---J-----------------I----J----I----�----I----L--- L-- --- - /�---//-��- yy- 18 J____1____I____L____L___J__ ---- L___J___Tc-6W-MirL_ I I I 16 _J _, _I _J _L _I _I _L _L _J _L 14 V .. ..--J----+----'----+----L ----'------+----L ---J----L----T----+---- 10 8 I I -y _♦ _I _y--------------I _y 4 5 6 7 8 9 19 11 12 13 14 15 16 17 18 19 Time (hours) B Runoff 2020-07-24 Full Routing Prepared by Timmons GrOL Type/1 24-hr 10-YR Rainfall=5.58" Hydrograph for Subcatchment 9S: To Storage Pipe 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 0.03 9.75 0.96 0.00 0.06 10.00 1.01 0.01 0.11 10.25 1.07 0.01 0.17 10.50 1.14 0.02 0.26 10.75 1.22 0.03 0.38 11.00 1.31 0.04 0.55 11.25 1.43 0.07 0.86 11.50 1.58 0.10 1.33 11.75 2.16 0.30 8.21 12.00 3.70 1.13 35.02 12.25 3.94 1.29 5.26 12.50 4.10 1.40 3.46 12.75 4.21 1.47 2.57 13.00 4.31 1.54 2.17 13.25 4.39 1.59 1.88 13.50 4.46 1.64 1.66 13.75 4.52 1.69 1.48 14.00 4.58 1.73 1.32 14.25 4.63 1.76 1.23 14.50 4.67 1.80 1.17 14.75 4.72 1.83 1.12 15.00 4.76 1.86 1.06 15.25 4.80 1.89 1.00 15.50 4.84 1.92 0.95 15.75 4.88 1.95 0.89 16.00 4.91 1.97 0.83 16.25 4.94 1.99 0.80 16.50 4.97 2.02 0.78 16.75 5.00 2.04 0.76 17.00 5.03 2.06 0.73 17.25 5.06 2.08 0.71 17.50 5.09 2.10 0.69 17.75 5.11 2.12 0.67 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 18.00 5.14 2.14 0.65 18.25 5.16 2.16 0.63 18.50 5.19 2.18 0.61 18.75 5.21 2.19 0.59 19.00 5.23 2.21 0.57 19.25 5.25 2.23 0.54 19.50 5.27 2.24 0.52 19.75 5.29 2.26 0.50 20.00 5.31 2.27 0.48 Printed 7/24/2020 2020-07-24 Full Routing Prepared by Timmons GrOL Type/1 24-hr 10-YR Rainfall=5.58" Printed 7/24/2020 Summary for Subcatchment 11S: Onsite Unrouted 4 Runoff = 4.09 cfs @ 11.98 hrs, Volume= 0.178 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 0.180 98 Paved parking, HSG B 0.620 61 >75% Grass cover, Good, HSG B 0.260 60 Woods, Fair, HSG B 1.060 67 Weighted Average 0.880 83.02% Pervious Area 0.180 16.98% Impervious Area Tc Length Description 6.0 Direct Entry, Subcatchment 11S: Onsite Unrouted 4 Hydrograph ❑ Runoff Type II 24-hr 10-YR Rainfall=5.58" Runoff Area=1.060 ac 'Runoff Volume=0.178 of Runoff Depth>2.02" Tc=6.0 min CN=67 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Time (hours) 2020-07-24 Full Routing Prepared by Timmons GrOL Type/1 24-hr 10-YR Rainfall=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 0.01 10.50 1.14 0.00 0.01 10.75 1.22 0.01 0.03 11.00 1.31 0.02 0.04 11.25 1.43 0.04 0.07 11.50 1.58 0.06 0.12 11.75 2.16 0.23 0.84 12.00 3.70 0.96 3.94 12.25 3.94 1.11 0.60 12.50 4.10 1.21 0.40 12.75 4.21 1.28 0.30 13.00 4.31 1.34 0.25 13.25 4.39 1.39 0.22 13.50 4.46 1.44 0.19 13.75 4.52 1.48 0.17 14.00 4.58 1.51 0.15 14.25 4.63 1.55 0.14 14.50 4.67 1.58 0.14 14.75 4.72 1.61 0.13 15.00 4.76 1.64 0.12 15.25 4.80 1.67 0.12 15.50 4.84 1.69 0.11 15.75 4.88 1.72 0.10 16.00 4.91 1.74 0.10 16.25 4.94 1.76 0.09 16.50 4.97 1.78 0.09 16.75 5.00 1.80 0.09 17.00 5.03 1.83 0.09 17.25 5.06 1.84 0.08 17.50 5.09 1.86 0.08 17.75 5.11 1.88 0.08 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 18.00 5.14 1.90 0.08 18.25 5.16 1.92 0.07 18.50 5.19 1.93 0.07 18.75 5.21 1.95 0.07 19.00 5.23 1.97 0.07 19.25 5.25 1.98 0.06 19.50 5.27 2.00 0.06 19.75 5.29 2.01 0.06 20.00 5.31 2.02 0.06 Printed 7/24/2020 2020-07-24 Full Routing Prepared by Timmons GrOL Type/1 24-hr 10-YR Rainfall=5.58" Printed 7/24/2020 Summary for Subcatchment 12S: Onsite Unrouted 5 Runoff = 1.17 cfs @ 11.98 hrs, Volume= 0.051 af, Depth> 2.18" 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 0.180 61 >75% Grass cover, Good, HSG B 0.040 60 Woods, Fair, HSG B 0.280 69 Weighted Average 0.220 78.57% Pervious Area 0.060 21.43% Impervious Area Tc Length Description 6.0 Direct Entry, I I I I I I I I 1- II I I I I I I I I I I I I I I I I N I I y I I I I 3 I I 0 I I LL I I I I I I I I I I Subcatchment 12S: Onsite Unrouted 5 Hydrograph Type II 24-hr I I I 10-YR Rainfall=5.58" I I Runoff Area=0.280 ac I I Runoff Volume=0.051 of Runoff Depth>2.18" I I Tc=6.0 min I I j CN=69 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Time (hours) ❑ Runoff 2020-07-24 Full Routing Prepared by Timmons GrOL Type/1 24-hr 10-YR Rainfall=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 0.01 0.00 10.50 1.14 0.01 0.01 10.75 1.22 0.02 0.01 11.00 1.31 0.03 0.02 11.25 1.43 0.06 0.03 11.50 1.58 0.09 0.04 11.75 2.16 0.28 0.25 12.00 3.70 1.08 1.12 12.25 3.94 1.23 0.17 12.50 4.10 1.33 0.11 12.75 4.21 1.41 0.08 13.00 4.31 1.47 0.07 13.25 4.39 1.53 0.06 13.50 4.46 1.57 0.05 13.75 4.52 1.62 0.05 14.00 4.58 1.65 0.04 14.25 4.63 1.69 0.04 14.50 4.67 1.72 0.04 14.75 4.72 1.76 0.04 15.00 4.76 1.79 0.03 15.25 4.80 1.82 0.03 15.50 4.84 1.84 0.03 15.75 4.88 1.87 0.03 16.00 4.91 1.89 0.03 16.25 4.94 1.92 0.03 16.50 4.97 1.94 0.03 16.75 5.00 1.96 0.02 17.00 5.03 1.98 0.02 17.25 5.06 2.00 0.02 17.50 5.09 2.02 0.02 17.75 5.11 2.04 0.02 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 18.00 5.14 2.06 0.02 18.25 5.16 2.08 0.02 18.50 5.19 2.09 0.02 18.75 5.21 2.11 0.02 19.00 5.23 2.13 0.02 19.25 5.25 2.14 0.02 19.50 5.27 2.16 0.02 19.75 5.29 2.17 0.02 20.00 5.31 2.19 0.02 Printed 7/24/2020 2020-07-24 Full Routing Prepared by Timmons GrOL Type/1 24-hr 10-YR Rainfall=5.58" Summary for Pond 6P: BIORETENTION 1 Printed 7/24/2020 Inflow Area = 6.150 ac, 52.68% Impervious, Inflow Depth > 3.18" for 10-YR event Inflow = 35.54 cfs @ 11.97 hrs, Volume= 1.628 of Outflow = 34.62 cfs @ 11.99 hrs, Volume= 1.317 af, Atten= 3%, Lag= 1.4 min Primary = 34.62 cfs @ 11.99 hrs, Volume= 1.317 of Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Peak Elev= 415.68' @ 11.99 hrs Surf.Area= 6,141 sf Storage= 17,288 cf Plug -Flow detention time= 82.3 min calculated for 1.317 of (81 % of inflow) Center -of -Mass det. time= 29.0 min ( 803.1 - 774.2 ) Volume Invert Avail.Storage Storage Description #1 407.00' 19,325 cf Custom Stage Data (Prismatic)Listed below (Recalc) Elevation Surf.Area Voids Inc.Store Cum.Store (feet) (sq-ft) M (cubic -feet) (cubic -feet) 407.00 3,808 0.0 0 0 411.00 3,808 40.0 6,093 6,093 414.00 3,808 25.0 2,856 8,949 415.00 5,174 100.0 4,491 13,440 416.00 6,596 100.0 5,885 19,325 Device Routing Invert Outlet Devices #1 Primary 409.56' 36.0" Round HDPE_Round 30" L= 37.1' RCP, sq.cut end projecting, Ke= 0.500 Inlet / Outlet Invert= 409.56' / 409.00' S= 0.0151 T Cc= 0.900 n= 0.010 PVC, smooth interior, Flow Area= 7.07 sf #2 Device 1 415.00' 36.0" Horiz. Orifice/Grate X 2.00 C= 0.600 Limited to weir flow at low heads Primary OutFlow Max=33.79 cfs @ 11.99 hrs HW=415.67' (Free Discharge) t1=HDPE_Round 30" (Passes 33.79 cfs of 73.07 cfs potential flow) t2=Orif ice/G rate (Weir Controls 33.79 cfs @ 2.68 fps) 2020-07-24 Full Routing Prepared by Timmons GrOL Type 1124-hr 10-YR Rainfall=5.58" Printed 7/24/2020 Pond 612: BIORETENTION 7 Hydrograph I I I - - - TOO-W.A I"-1=0.1 S (Y-c - I - --- IPF�����`��S1ar_ I I I I ------sibral e=_CT� 8_�f_ 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 r -1 -r 1 1 1 1___J____ L___J____L 1 1 1 1 I 1 F ___ ._!____I____ ---- I 11 12 13 14 15 Time (hours) Pond 6P: BIORETENTION 1 Stage -Discharge 416- Odfce/Grate _____'-----+-----'-----'-----'-----'---------i-----'- 415 I I I I I I I I ____ I I I I I I I I I I 414 I I I I I I I I I I I I I I 413- I I I I I I I I I I I I I I I I N 412- I I I I I I I I I C I I I � 411 I I I I I I I I I N I I I I I I I I I W I I I I I I I I I I 410 HDPE Round 30" I I I I I I I I 400 I I I I I I I I I I I I I I I I I I I 408- I I I I I I I I I I I I I I I I I I I I I I Discharge (cfs) ❑ InFlow ❑ Primary ❑ Primary 2020-07-24 Full Routing Prepared by Timmons GrOI Type 1124-hr 10-YR Rainfall=5.58" Printed 7/24/2020 Pond 613: BIORETENTION 7 Stage -Area -Storage Surface/Horizontal/Wetted Area (sq-ft) 500 1,000 1,500 2,000 2,500 3,000 3,500 4,000 4,500 5,000 5,500 6,000 6,500 " Surface ❑ Storage 416 I 415 1 1 1 , I I I I I I u I I I I I I I II I I �. i II 11 I , � I 414 I I I II I I I I I I i �. i II 11 I 413 1 II li n 1 1 1 I I I I I u I ar , I I 1 I I u I 1 I 11 I I i I n 1 1 1 —412 ____1I1J_L____ ____L_1__I____LI_ C 1 1 1 1 1 n 1 1 1 0 1 1 1 I I n I 1 I 11 I I i I n 1 1 1 W 411 410 1 1 1 II 1 1 l n 1 1 1 I I n I 1 I 11 I i i I II 1 I 1 409 1 n 1 II 1 1 I I I 1 I 11 I I i I u 1 I 1 1 u 1 406 III I 1 I 11 I I I II 1 I I Custom Stage Data IV 407 0 2,000 4,000 6,000 8,000 10,000 12,000 14,000 16,000 18,000 Storage (cubic -feet) 2020-07-24 Full Routing Prepared by Timmons GrOL Type/1 24-hr 10-YR Rainfall=5.58" Hydrograph for Pond 6P: BIORETENTION 1 Time Inflow Storage Elevation Primary (hours) (cfs) (cubic -feet) (feet) (cfs) 5.00 0.00 0 407.00 0.00 5.50 0.00 0 407.00 0.00 6.00 0.00 0 407.00 0.00 6.50 0.02 19 407.01 0.00 7.00 0.05 79 407.05 0.00 7.50 0.07 184 407.12 0.00 8.00 0.10 338 407.22 0.00 8.50 0.15 558 407.37 0.00 9.00 0.23 900 407.59 0.00 9.50 0.29 1,374 407.90 0.00 10.00 0.41 1,993 408.31 0.00 10.50 0.62 2,913 408.91 0.00 11.00 1.00 4,349 409.86 0.00 11.50 1.93 6,886 411.83 0.00 12.00 33.67 17,275 415.68 34.46 12.50 3.10 14,183 415.14 3.37 13.00 1.91 13,969 415.10 1.98 13.50 1.46 13,855 415.08 1.51 14.00 1.15 13,774 415.06 1.19 14.50 1.01 13,734 415.06 1.03 15.00 0.91 13,709 415.05 0.93 15.50 0.81 13,683 415.05 0.83 16.00 0.71 13,658 415.04 0.72 16.50 0.66 13,643 415.04 0.67 17.00 0.63 13,634 415.04 0.63 17.50 0.59 13,625 415.04 0.59 18.00 0.55 13,616 415.03 0.56 18.50 0.52 13,607 415.03 0.52 19.00 0.48 13,597 415.03 0.48 19.50 0.44 13,588 415.03 0.45 20.00 0.40 13,579 415.03 0.41 Printed 7/24/2020 2020-07-24 Full Routing Prepared by Timmons GrOL Elevation Primary (feet) (cfs) 407.00 0.00 407.10 0.00 407.20 0.00 407.30 0.00 407.40 0.00 407.50 0.00 407.60 0.00 407.70 0.00 407.80 0.00 407.90 0.00 408.00 0.00 408.10 0.00 408.20 0.00 408.30 0.00 408.40 0.00 408.50 0.00 408.60 0.00 408.70 0.00 408.80 0.00 408.90 0.00 409.00 0.00 409.10 0.00 409.20 0.00 409.30 0.00 409.40 0.00 409.50 0.00 409.60 0.00 409.70 0.00 409.80 0.00 409.90 0.00 410.00 0.00 410.10 0.00 410.20 0.00 410.30 0.00 410.40 0.00 410.50 0.00 410.60 0.00 410.70 0.00 410.80 0.00 410.90 0.00 411.00 0.00 411.10 0.00 411.20 0.00 411.30 0.00 411.40 0.00 411.50 0.00 411.60 0.00 411.70 0.00 411.80 0.00 411.90 0.00 412.00 0.00 412.10 0.00 Type/1 24-hr 10-YR Rainfall=5.58" Stage -Discharge for Pond 6P: BIORETENTION 1 Elevation Primary (feet) (cfs) 412.20 0.00 412.30 0.00 412.40 0.00 412.50 0.00 412.60 0.00 412.70 0.00 412.80 0.00 412.90 0.00 413.00 0.00 413.10 0.00 413.20 0.00 413.30 0.00 413.40 0.00 413.50 0.00 413.60 0.00 413.70 0.00 413.80 0.00 413.90 0.00 414.00 0.00 414.10 0.00 414.20 0.00 414.30 0.00 414.40 0.00 414.50 0.00 414.60 0.00 414.70 0.00 414.80 0.00 414.90 0.00 415.00 0.00 415.10 1.95 415.20 5.51 415.30 10.13 415.40 15.59 415.50 21.79 415.60 28.65 415.70 36.10 415.80 44.10 415.90 52.63 416.00 61.64 Printed 7/24/2020 2020-07-24 Full Routing Prepared by Timmons GrOL Type/1 24-hr 10-YR Rainfall=5.58" Stage -Area -Storage for Pond 6P: BIORETENTION 1 Elevation Surface Storage (feet) (sq-ft) (cubic -feet) 407.00 3,808 0 407.10 3,808 152 407.20 3,808 305 407.30 3,808 457 407.40 3,808 609 407.50 3,808 762 407.60 3,808 914 407.70 3,808 1,066 407.80 3,808 1,219 407.90 3,808 1,371 408.00 3,808 1,523 408.10 3,808 1,676 408.20 3,808 1,828 408.30 3,808 1,980 408.40 3,808 2,132 408.50 3,808 2,285 408.60 3,808 2,437 408.70 3,808 2,589 408.80 3,808 2,742 408.90 3,808 2,894 409.00 3,808 3,046 409.10 3,808 3,199 409.20 3,808 3,351 409.30 3,808 3,503 409.40 3,808 3,656 409.50 3,808 3,808 409.60 3,808 3,960 409.70 3,808 4,113 409.80 3,808 4,265 409.90 3,808 4,417 410.00 3,808 4,570 410.10 3,808 4,722 410.20 3,808 4,874 410.30 3,808 5,027 410.40 3,808 5,179 410.50 3,808 5,331 410.60 3,808 5,484 410.70 3,808 5,636 410.80 3,808 5,788 410.90 3,808 5,940 411.00 3,808 6,093 411.10 3,808 6,188 411.20 3,808 6,283 411.30 3,808 6,378 411.40 3,808 6,474 411.50 3,808 6,569 411.60 3,808 6,664 411.70 3,808 6,759 411.80 3,808 6,854 411.90 3,808 6,950 412.00 3,808 7,045 412.10 3,808 7,140 Elevation Surface Storage (feet) (sq-ft) (cubic -feet) 412.20 3,808 7,235 412.30 3,808 7,330 412.40 3,808 7,426 412.50 3,808 7,521 412.60 3,808 7,616 412.70 3,808 7,711 412.80 3,808 7,806 412.90 3,808 7,902 413.00 3,808 7,997 413.10 3,808 8,092 413.20 3,808 8,187 413.30 3,808 8,282 413.40 3,808 8,378 413.50 3,808 8,473 413.60 3,808 8,568 413.70 3,808 8,663 413.80 3,808 8,758 413.90 3,808 8,854 414.00 3,808 8,949 414.10 3,945 9,336 414.20 4,081 9,738 414.30 4,218 10,153 414.40 4,354 10,581 414.50 4,491 11,024 414.60 4,628 11,479 414.70 4,764 11,949 414.80 4,901 12,432 414.90 5,037 12,929 415.00 5,174 13,440 415.10 5,316 13,964 415.20 5,458 14,503 415.30 5,601 15,056 415.40 5,743 15,623 415.50 5,885 16,205 415.60 6,027 16,800 415.70 6,169 17,410 415.80 6,312 18,034 415.90 6,454 18,672 416.00 6,596 19,325 Printed 7/24/2020 2020-07-24 Full Routing Prepared by Timmons GrOL Type/1 24-hr 10-YR Rainfall=5.58" Summary for Pond 8P: BIORETENTION 2 Printed 7/24/2020 Inflow Area = 1.690 ac, 61.54% Impervious, Inflow Depth > 3.55" for 10-YR event Inflow = 10.72 cfs @ 11.97 hrs, Volume= 0.500 of Outflow = 10.53 cfs @ 11.99 hrs, Volume= 0.373 af, Atten= 2%, Lag= 1.2 min Primary = 10.53 cfs @ 11.99 hrs, Volume= 0.373 of Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Peak Elev= 432.40' @ 11.99 hrs Surf.Area= 2,164 sf Storage= 6,546 cf Plug -Flow detention time= 99.9 min calculated for 0.373 of (75% of inflow) Center -of -Mass det. time= 38.6 min ( 805.0 - 766.4 ) 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' 24.0" Round HDPE_Round 24" 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= 3.14 sf #2 Device 1 431.91' 36.0" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads Primary OutFlow Max=10.20 cfs @ 11.99 hrs HW=432.39' (Free Discharge) L7=1HIDPE_Round 24" (Passes 10.20 cfs of 39.90 cfs potential flow) t2=Orif ice/G rate (Weir Controls 10.20 cfs @ 2.26 fps) 2020-07-24 Full Routing Prepared by Timmons GrOI W Type // 24-hr 10-YR Rainfall=5.58" Printed 7/24/2020 Pond 8P: BIORETENTION 2 Hydrograph Inflow Area=1.690 ac- Peak Elev=432.40`- Storage=6,546 cf 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 Time (hours) Pond 8P: BIORETENTION 2 Stage -Discharge Discharge (cis) ® Inflow ■ Primary ■ Primary 2020-07-24 Full Routing Prepared by Timmons GrOL Type 1124-hr 10-YR Rainfall=5.58" Pond 813: BIORETENTION 2 Stage -Area -Storage Printed 7/24/2020 0 200 400 600 Surface/Horizontal(Wetted Area (sq-ft) 800 1,000 1,200 1,400 1,600 1,800 2,000 2,200 2,400 i ii 433 i i n n 432 i i n n n 430 429 � ____rr__r_,__ __ r r___'r____r_____r r- u r u 427 r i u 426 r n Custom Stage Data Storage (cubic -feet) Surface ❑ Storage 2020-07-24 Full Routing Prepared by Timmons GrOL Type/1 24-hr 10-YR Rainfall=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 0.01 10 423.93 0.00 6.50 0.02 35 423.97 0.00 7.00 0.03 77 424.03 0.00 7.50 0.04 137 424.13 0.00 8.00 0.05 216 424.25 0.00 8.50 0.07 322 424.42 0.00 9.00 0.10 472 424.65 0.00 9.50 0.12 666 424.96 0.00 10.00 0.16 905 425.34 0.00 10.50 0.23 1,245 425.87 0.00 11.00 0.35 1,753 426.67 0.00 11.50 0.64 2,616 428.10 0.00 12.00 10.09 6,538 432.39 10.41 12.50 0.91 5,725 432.01 0.97 13.00 0.56 5,668 431.98 0.58 13.50 0.42 5,633 431.96 0.44 14.00 0.33 5,610 431.95 0.34 14.50 0.29 5,599 431.95 0.30 15.00 0.26 5,592 431.94 0.27 15.50 0.23 5,584 431.94 0.24 16.00 0.21 5,577 431.94 0.21 16.50 0.19 5,573 431.93 0.19 17.00 0.18 5,570 431.93 0.18 17.50 0.17 5,568 431.93 0.17 18.00 0.16 5,565 431.93 0.16 18.50 0.15 5,563 431.93 0.15 19.00 0.14 5,560 431.93 0.14 19.50 0.13 5,557 431.93 0.13 20.00 0.12 5,555 431.92 0.12 Printed 7/24/2020 2020-07-24 Full Routing Prepared by Timmons GrOL 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/1 24-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 25.44 432.85 28.09 432.91 30.82 432.97 33.63 433.03 36.02 433.09 36.97 433.15 37.90 433.21 38.81 Printed 7/24/2020 Elevation Primary (feet) (cfs) 433.27 39.69 433.33 40.56 433.39 41.41 433.45 42.24 433.51 43.00 433.57 43.16 433.63 43.32 433.69 43.47 433.75 43.63 433.81 43.79 433.87 43.95 433.93 44.10 433.99 44.26 2020-07-24 Full Routing Prepared by Timmons GrOL Type/1 24-hr 10-YR Rainfall=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 7/24/2020 2020-07-24 Full Routing Prepared by Timmons GrOL Type/1 24-hr 10-YR Rainfall=5.58" Summary for Pond 10P: Storage Pipe 320x60 Printed 7/24/2020 Inflow Area = 8.480 ac, 23.11 % Impervious, Inflow Depth > 2.27" for 10-YR event Inflow = 36.22 cfs @ 11.97 hrs, Volume= 1.602 of Outflow = 36.07 cfs @ 11.99 hrs, Volume= 1.594 af, Atten= 0%, Lag= 1.0 min Primary = 36.07 cfs @ 11.99 hrs, Volume= 1.594 of Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Peak Elev= 418.21' @ 11.99 hrs Surf.Area= 1,258 sf Storage= 9,081 cf Plug -Flow detention time= 18.9 min calculated for 1.588 of (99% of inflow) Center -of -Mass det. time= 16.8 min ( 810.9 - 794.2 ) Volume Invert Avail.Storage Storage Description #1 413.20' 9,503 cf 66.0" Round Pipe Storage L= 400.0' Device Routing Invert Outlet Devices #1 Primary 413.20' 36.0" Round Culvert L= 10.0' CPP, projecting, no headwall, Ke= 0.900 Inlet / Outlet Invert= 413.20' / 413.10' S= 0.0100 '/' Cc= 0.900 n= 0.013 Concrete pipe, bends & connections, Flow Area= 7.07 sf #2 Device 1 413.20' 7.0" Vert. Orifice/Grate C= 0.600 #3 Device 1 416.50' Custom Weir/Orifice, Cv= 2.62 (C= 3.28) Head (feet) 0.00 1.58 2.20 Width (feet) 5.39 3.48 0.00 Primary OutFlow Max=35.13 cfs @ 11.99 hrs HW=418.17' (Free Discharge) t1=Culvert (Passes 35.13 cfs of 50.04 cfs potential flow) �2=Orifice/Grate (Orifice Controls 2.78 cfs @ 10.41 fps) 3=Custom Weir/Orifice (Weir Controls 32.34 cfs @ 4.43 fps) 2020-07-24 Full Routing Prepared by Timmons GrOL Type // 24-hr 10-YR Rainfall=5.58" Printed 7/24/2020 Pond 10P: Storage Pipe 320x60 Hydrograph 40 � 38 ' � I 38 I I I I I 34 32 - __I____I_ - 30 28 ' 26 24 22 p — 18 16 ' I 14 , I I I I I 12 - - I I 10 8 ' I I 6 4 41 41 a a c 41 a w 41 41 5 6 7 8 9 10 11 Inflow Area=8.480 ac Peak Elev=418.21' _,_Storage=9,081 cf- 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 Time (hours) 14 Pond 10P: Storage Pipe 320x60 Stage -Discharge Discharge (cfs) ❑ Inflow ❑ Primary ❑ Primary 2020-07-24 Full Routing Prepared by Timmons GrOI I Type 1124-hr 10-YR Rainfall=5.58" Pond 10P: Storage Pipe 320x60 Stage -Area -Storage Printed 7/24/2020 ❑ Storage 2020-07-24 Full Routing Prepared by Timmons GrOL Type/1 24-hr 10-YR Rainfall=5.58" Hydrograph for Pond 10P: Storage Pipe 320x60 Time Inflow Storage Elevation Primary (hours) (cfs) (cubic -feet) (feet) (cfs) 5.00 0.00 0 413.20 0.00 5.50 0.00 0 413.20 0.00 6.00 0.00 0 413.20 0.00 6.50 0.00 0 413.20 0.00 7.00 0.00 0 413.20 0.00 7.50 0.00 0 413.20 0.00 8.00 0.00 0 413.20 0.00 8.50 0.00 0 413.20 0.00 9.00 0.00 0 413.20 0.00 9.50 0.03 8 413.23 0.01 10.00 0.11 68 413.34 0.07 10.50 0.26 161 413.46 0.20 11.00 0.55 320 413.61 0.43 11.50 1.33 771 413.94 0.87 12.00 35.02 9,070 418.20 35.86 12.50 3.46 6,369 416.69 3.80 13.00 2.17 6,008 416.53 2.34 13.50 1.66 5,433 416.26 2.14 14.00 1.32 4,409 415.79 1.95 14.50 1.17 3,314 415.29 1.73 15.00 1.06 2,417 414.86 1.50 15.50 0.95 1,709 414.50 1.29 16.00 0.83 1,176 414.20 1.08 16.50 0.78 834 413.99 0.90 17.00 0.73 669 413.88 0.80 17.50 0.69 583 413.82 0.73 18.00 0.65 523 413.77 0.68 18.50 0.61 472 413.73 0.63 19.00 0.57 431 413.70 0.59 19.50 0.52 396 413.67 0.54 20.00 0.48 363 413.65 0.50 Printed 7/24/2020 2020-07-24 Full Routing Prepared by Timmons GrOL Elevation Primary (feet) (cfs) 413.20 0.00 413.24 0.01 413.28 0.02 413.32 0.05 413.36 0.08 413.40 0.12 413.44 0.17 413.48 0.23 413.52 0.29 413.56 0.35 413.60 0.42 413.64 0.49 413.68 0.56 413.72 0.62 413.76 0.67 413.80 0.71 413.84 0.76 413.88 0.80 413.92 0.84 413.96 0.88 414.00 0.92 414.04 0.95 414.08 0.99 414.12 1.02 414.16 1.05 414.20 1.08 414.24 1.11 414.28 1.14 414.32 1.17 414.36 1.20 414.40 1.23 414.44 1.25 414.48 1.28 414.52 1.30 414.56 1.33 414.60 1.35 414.64 1.38 414.68 1.40 414.72 1.43 414.76 1.45 414.80 1.47 414.84 1.49 414.88 1.52 414.92 1.54 414.96 1.56 415.00 1.58 415.04 1.60 415.08 1.62 415.12 1.64 415.16 1.66 415.20 1.68 415.24 1.70 Type/1 24-hr 10-YR Rainfall=5.58" Stage -Discharge for Pond 10P: Storage Pipe 320x60 Elevation Primary (feet) (cfs) 415.28 1.72 415.32 1.74 415.36 1.76 415.40 1.78 415.44 1.80 415.48 1.81 415.52 1.83 415.56 1.85 415.60 1.87 415.64 1.89 415.68 1.90 415.72 1.92 415.76 1.94 415.80 1.96 415.84 1.97 415.88 1.99 415.92 2.01 415.96 2.02 416.00 2.04 416.04 2.05 416.08 2.07 416.12 2.09 416.16 2.10 416.20 2.12 416.24 2.13 416.28 2.15 416.32 2.16 416.36 2.18 416.40 2.19 416.44 2.21 416.48 2.22 416.52 2.29 416.56 2.51 416.60 2.82 416.64 3.20 416.68 3.62 416.72 4.10 416.76 4.61 416.80 5.16 416.84 5.75 416.88 6.36 416.92 7.01 416.96 7.68 417.00 8.37 417.04 9.09 417.08 9.83 417.12 10.59 417.16 11.37 417.20 12.17 417.24 12.98 417.28 13.81 417.32 14.66 Elevation Primary (feet) (cfs) 417.36 15.52 417.40 16.40 417.44 17.29 417.48 18.19 417.52 19.10 417.56 20.03 417.60 20.96 417.64 21.91 417.68 22.87 417.72 23.83 417.76 24.80 417.80 25.78 417.84 26.77 417.88 27.77 417.92 28.77 417.96 29.78 418.00 30.80 418.04 31.82 418.08 32.85 418.12 33.87 418.16 34.90 418.20 35.92 418.24 36.94 418.28 37.94 418.32 38.93 418.36 39.91 418.40 40.87 418.44 41.81 418.48 42.74 418.52 43.64 418.56 44.52 418.60 45.38 418.64 46.22 418.68 47.03 Printed 7/24/2020 2020-07-24 Full Routing Prepared by Timmons GrOL Type/1 24-hr 10-YR Rainfall=5.58" Stage -Area -Storage for Pond 10P: Storage Pipe 320x60 Elevation Storage (feet) (cubic -feet) 413.20 0 413.24 10 413.28 28 413.32 52 413.36 79 413.40 ill 413.44 145 413.48 182 413.52 222 413.56 265 413.60 309 413.64 356 413.68 405 413.72 455 413.76 508 413.80 562 413.84 618 413.88 675 413.92 733 413.96 793 414.00 855 414.04 918 414.08 981 414.12 1,047 414.16 1,113 414.20 1,180 414.24 1,249 414.28 1,318 414.32 1,388 414.36 1,460 414.40 1,532 414.44 1,605 414.48 1,679 414.52 1,754 414.56 1,829 414.60 1,906 414.64 1,983 414.68 2,060 414.72 2,139 414.76 2,218 414.80 2,297 414.84 2,378 414.88 2,458 414.92 2,540 414.96 2,622 415.00 2,704 415.04 2,787 415.08 2,870 415.12 2,954 415.16 3,038 415.20 3,122 415.24 3,207 Elevation Storage (feet) (cubic -feet) 415.28 3,292 415.32 3,378 415.36 3,464 415.40 3,550 415.44 3,636 415.48 3,723 415.52 3,810 415.56 3,897 415.60 3,984 415.64 4,071 415.68 4,159 415.72 4,246 415.76 4,334 415.80 4,422 415.84 4,510 415.88 4,598 415.92 4,686 415.96 4,774 416.00 4,862 416.04 4,950 416.08 5,038 416.12 5,125 416.16 5,213 416.20 5,301 416.24 5,388 416.28 5,476 416.32 5,563 416.36 5,650 416.40 5,737 416.44 5,824 416.48 5,910 416.52 5,997 416.56 6,083 416.60 6,168 416.64 6,254 416.68 6,339 416.72 6,423 416.76 6,508 416.80 6,591 416.84 6,675 416.88 6,758 416.92 6,841 416.96 6,923 417.00 7,004 417.04 7,085 417.08 7,166 417.12 7,246 417.16 7,325 417.20 7,404 417.24 7,482 417.28 7,559 417.32 7,636 Elevation Storage (feet) (cubic -feet) 417.36 7,712 417.40 7,787 417.44 7,861 417.48 7,935 417.52 8,008 417.56 8,079 417.60 8,150 417.64 8,220 417.68 8,289 417.72 8,357 417.76 8,424 417.80 8,489 417.84 8,554 417.88 8,617 417.92 8,679 417.96 8,740 418.00 8,799 418.04 8,857 418.08 8,914 418.12 8,969 418.16 9,022 418.20 9,073 418.24 9,123 418.28 9,171 418.32 9,216 418.36 9,260 418.40 9,301 418.44 9,340 418.48 9,376 418.52 9,409 418.56 9,438 418.60 9,464 418.64 9,485 418.68 9,500 Printed 7/24/2020 2020-07-24 Full Routing Prepared by Timmons GrOL Type/1 24-hr 10-YR Rainfall=5.58" Printed 7/24/2020 Summary for Link 3L: (new Link) Inflow Area = 17.100 ac, 6.20% Impervious, Inflow Depth > 1.65" for 10-YR event Inflow = 53.64 cfs @ 11.98 hrs, Volume= 2.348 of Primary = 53.64 cfs @ 11.98 hrs, Volume= 2.348 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Link 3L: (new Link) Hydrograph FE ]—I n—fl.—w ❑ Primary Time (hours) 2020-07-24 Full Routing Prepared by Timmons GrOL Type/1 24-hr 10-YR Rainfall=5.58" Hydrograph for Link 3L: (new Link) 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 0.01 0.00 0.01 9.00 0.01 0.00 0.01 9.25 0.02 0.00 0.02 9.50 0.03 0.00 0.03 9.75 0.03 0.00 0.03 10.00 0.05 0.00 0.05 10.25 0.06 0.00 0.06 10.50 0.08 0.00 0.08 10.75 0.11 0.00 0.11 11.00 0.16 0.00 0.16 11.25 0.46 0.00 0.46 11.50 1.01 0.00 1.01 11.75 8.98 0.00 8.98 12.00 52.04 0.00 52.04 12.25 8.29 0.00 8.29 12.50 5.54 0.00 5.54 12.75 4.14 0.00 4.14 13.00 3.51 0.00 3.51 13.25 3.07 0.00 3.07 13.50 2.72 0.00 2.72 13.75 2.43 0.00 2.43 14.00 2.17 0.00 2.17 14.25 2.02 0.00 2.02 14.50 1.94 0.00 1.94 14.75 1.85 0.00 1.85 15.00 1.76 0.00 1.76 15.25 1.67 0.00 1.67 15.50 1.58 0.00 1.58 15.75 1.48 0.00 1.48 16.00 1.39 0.00 1.39 16.25 1.33 0.00 1.33 16.50 1.30 0.00 1.30 16.75 1.27 0.00 1.27 17.00 1.23 0.00 1.23 17.25 1.20 0.00 1.20 17.50 1.17 0.00 1.17 17.75 1.13 0.00 1.13 Time Inflow Elevation Primary (hours) (cfs) (feet) (cfs) 18.00 1.10 0.00 1.10 18.25 1.07 0.00 1.07 18.50 1.03 0.00 1.03 18.75 1.00 0.00 1.00 19.00 0.96 0.00 0.96 19.25 0.92 0.00 0.92 19.50 0.89 0.00 0.89 19.75 0.85 0.00 0.85 20.00 0.81 0.00 0.81 Printed 7/24/2020 2020-07-24 Full Routing Prepared by Timmons GrOL Type/1 24-hr 10-YR Rainfall=5.58" Printed 7/24/2020 Summary for Link 13L: Link 1 Inflow Area = 17.660 ac, 36.69% Impervious, Inflow Depth > 2.39" for 10-YR event Inflow = 86.40 cfs @ 11.99 hrs, Volume= 3.513 of Primary = 86.40 cfs @ 11.99 hrs, Volume= 3.513 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Link 13L: Link 1 Hydrograph --,-- 65 - ----- 80 75 --- --- --- 70 - 65 60 ' ___--------1----�---- __. � r � 55 - i i 50 i 45 LL 4 35 30 25 20 ------_ --- --- 15 ' 10 , Inflow Area=17.660 ac ------------- ---____ 1 12 13 14 Time (hours) ■ Inflow ❑ Primary 2020-07-24 Full Routing Prepared by Timmons GrOL Type/1 24-hr 10-YR Rainfall=5.58" Hydrograph for Link 13L: Link 1 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 0.01 0.00 0.01 9.75 0.03 0.00 0.03 10.00 0.07 0.00 0.07 10.25 0.13 0.00 0.13 10.50 0.22 0.00 0.22 10.75 0.33 0.00 0.33 11.00 0.50 0.00 0.50 11.25 0.73 0.00 0.73 11.50 1.03 0.00 1.03 11.75 2.74 0.00 2.74 12.00 85.78 0.00 85.78 12.25 13.51 0.00 13.51 12.50 8.65 0.00 8.65 12.75 6.13 0.00 6.13 13.00 5.22 0.00 5.22 13.25 4.70 0.00 4.70 13.50 4.34 0.00 4.34 13.75 4.00 0.00 4.00 14.00 3.68 0.00 3.68 14.25 3.42 0.00 3.42 14.50 3.23 0.00 3.23 14.75 3.04 0.00 3.04 15.00 2.86 0.00 2.86 15.25 2.68 0.00 2.68 15.50 2.50 0.00 2.50 15.75 2.32 0.00 2.32 16.00 2.14 0.00 2.14 16.25 1.99 0.00 1.99 16.50 1.88 0.00 1.88 16.75 1.79 0.00 1.79 17.00 1.72 0.00 1.72 17.25 1.66 0.00 1.66 17.50 1.60 0.00 1.60 17.75 1.55 0.00 1.55 Time Inflow Elevation Primary (hours) (cfs) (feet) (cfs) 18.00 1.50 0.00 1.50 18.25 1.45 0.00 1.45 18.50 1.40 0.00 1.40 18.75 1.35 0.00 1.35 19.00 1.30 0.00 1.30 19.25 1.25 0.00 1.25 19.50 1.19 0.00 1.19 19.75 1.15 0.00 1.15 20.00 1.10 0.00 1.10 Printed 7/24/2020