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WPO201900062 Calculations 2021-06-08
Southwood Redevelopment — Village 1 ALBEMARLE COUNTY, VIRGINIA ROAD PLAN, WPO PLAN, & PRELIMINARY SUBDIVISION PLAT DESIGN CALCULATIONS & NARRATIVE OCTOBER 30, 2019 REVISED: JUNE 49 2020 REVISED: SEPTEMBER 10, 2020 REVISED: OCTOBER 26, 2020 REVISED: MARCH 19, 2021 REVISED: JUNE 89 2021 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. S F LET Lie. N .54380 6/8/2021 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. 21.66 acres was analyzed for water quality, including 15.68 acres of disturbed area. The total TP load reduction required is 9.60 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 1.79 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 Quantity: The proposed stormwater conveyance system outfall enters a floodplain and discharges runoff into an established channel with less than 1 % of the contributing drainage area, in accordance with 9VAC25-870-66 section C.3. Bioretention facilities 1 & 2 have been analyzed to ensure adequate storage and routing. No further stormwater quantity measures have been provided as part of this development. Energy balance requirements will be met through the use of two bioretention basins and one dry pond. Flood protection requirements for the 10-year storm will be met by releasing the stormwater into the mapped floodplain, in accordance with 9VAC25-670-66, Section C.3.c. FORM LD 204 STORMINATER INLET COMPUTATIONS SHEET OF 10 ROUTE PROJECT SouMmodVillagei DESIGNER CG DATE 61812021 CHECKED: UNITS ENGLISH INLETSOFT BY ENSOFTEC DATE: 6/8/2021 FORM LD 204 STORMINATER INLET COMPUTATIONS SHEET 2OF 10 ROUTE PROJECT SouMmodVillagei DESIGNER CG DATE 61812021 CHECKED: UNITS ENGLISH INLETSOFT BY ENSOFTEC DATE: 6/8/2021 FORM LD 204 STORMINATER INLET COMPUTATIONS SHEET 3OF 10 ROUTE PROJECT SouMmodVillagei DESIGNER CG DATE 61812021 CHECKED: UNITS ENGLISH INLETSOFT BY ENSOFTEC DATE: 6/8/2021 FORM LD 204 STORMINATER INLET COMPUTATIONS SHEET 4 OF 10 ROUTE PROJECT SouMmodVillagei DESIGNER CG DATE 61812021 CHECKED: UNITS ENGLISH INLETSOFT BY ENSOFTEC DATE: 6/8/2021 FORM LD 204 STORMINATER INLET COMPUTATIONS SHEET 5OF 10 ROUTE PROJECT SouMmodVillagei DESIGNER CG DATE 61812021 CHECKED: UNITS ENGLISH INLETSOFT BY ENSOFTEC DATE: 6/8/2021 FORM LD 204 STORMINATER INLET COMPUTATIONS SHEETS OF I0 ROUTE PROJECT SouMmodVillagei DESIGNER CG DATE 61812021 CHECKED: UNITS ENGLISH INLETSOFT BY ENSOFTEC DATE: 6/8/2021 FORM LD 204 STORMINATER INLET COMPUTATIONS SHEET 7OF 10 ROUTE PROJECT SouMmodVillagei DESIGNER CG DATE 61812021 CHECKED: UNITS ENGLISH INLETSOFT BY ENSOFTEC DATE: 6/8/2021 FORM LD 204 STORMINATER INLET COMPUTATIONS SHEET 8OF 10 ROUTE PROJECT SouMmodVillagei DESIGNER CG DATE 61812021 CHECKED: UNITS ENGLISH INLETSOFT BY ENSOFTEC DATE: 6/8/2021 FORM LD 204 STORMINATER INLET COMPUTATIONS SHEET 9OF 10 ROUTE PROJECT SouMmodVillagei DESIGNER CG DATE 61812021 CHECKED: UNITS ENGLISH ■-.--■- i �: ���- � �� � � �: ® �ii ®� is ii .®----..-----■_-® INLETSOFT BY ENSOFTEC DATE: 6/8/2021 FORM LD 204 STORMINATER INLET COMPUTATIONS SHEET 10OF 10 ROUTE PROJECT SouftwoodVillagei DESIGNER CG DATE 61812021 CHECKED: UNITS ENGLISH INLETSOFT BY ENSOFTEC DATE: 6/8/2021 LD-229 STORM SEWER DESIGN COMPUTATIONS STORM FREQUENCY 10 PROJECT: Southwood Redevelopment - Village 1 LOCATION: COUNTY: Chadottesville Designed by: CG Checked by: UNITS ENGLISN PIPE NO. FROM POINT M TOPOT DRAM. AREA RUNOFF EF COUP C. 4 CA M TIME Minn. RAM FALL IivRr 8 RUNOFF MVERTELEVATIO LENGTH of Pipe Ft 12 SLOPE FUR. 13 SIZE (Dos Or SpsoOf c) In 14 SHAPE Number of Pies p Capacity CFS 15 Faction Slope FuTt NORMAL FLOW FLOW TMR: REMARKS 18 INCRE- MENF 5 ACCUM- MATED 6 mLET Leml CFS TWO CFS 9 UPPER END 10 LOWER END II DepN of FIow,do Ft Areaof Flow, An SgFI Him FL Vn FVSm 16 En FL INCRE- MENF Minors 1 ACCUMU -LATED Minutes 17 REFERENCE I STA REFERENCE 2 STA. "A' Acre 3 107 106 109 007 0M 005 005 5on 6.54 Don 0.31 42626 42555 7190 001000 15 C'rcdar 1 TOO 000000 0.is 0.11 0.It 2.88 0.31 041 541 109 110 109 003 074 002 041 5-82 628 OW 265 43210 42794 9251 0 W497 IS Cirrar 1 14M 0-00150 036 029 021 914 166 017 599 111 112 112A 0.18 0V 0.14 0.30 541 641 Don 1.91 440.84 43826 4307 005M IS Circular 1 1713 000080 028 021 0.17 922 1W 008 549 111A 112A 110 013 0n 0-09 039 551 638 0-00 251 43475 43220 001996 IS Circular Circu 1 989 0W130 043 037 024 6M L13 032 582 113 114 112 008 0-70 0-05 015 521 647 0-00 1-On US 12 44094 8363 0NOSS IS Circular 1 1565 0-OOW) 021 014 013 715 L01 020 541 115 116 114 0.13 075 0.10 0.10 5on 6.54 000 062 US 30 44522 76% 004005 IS Circular 1 14D1 000NO 0.18 0.11 0.It 574 069 022 522 119 108 120 005 0-70 004 050 599 623 0-00 319 42545 42453 6143 001498 is CimWar 1 1393 0-00080 049 050 027 639 1.12 016 615 127 128 126 000 0On 4.88 857 4M 000 2775 41900 41800 2495 004008 30 Circular 1 8896 OOM10 0.% 173 052 1601 4% 003 8.60 129 130 129 000 0On 4.88 851 5.58 000 2775 43038 427.88 62% 003996 30 CirCWar 1 8883 OOM10 0.% 174 052 16W 4.93 007 8.57 131 136 130 0.10 071 007 4.88 846 5.59 000 2775 437.19 4M 73 30% 001487 30 Circular 1 5419 OOM10 127 2.50 063 1t10 3.18 005 8.51 133 134 1136A 028 056 016 016 5-00 654 0-00 101 43857 437% 4459 001503 IS C'rcalar 1 858 0-OOW) 029 0n 017 4-70 063 016 516 135 136A 136 006 073 005 025 530 644 000 161 43780 43729 51.16 000997 IS Circular 1 699 0M50 041 0.35 023 462 074 0.18 549 135A 132 136A 007 002 005 005 500 504 000 024 43887 43838 4827 001015 IS Circular 1 705 000000 0.16 009 0.10 267 027 0.30 5.30 137 138 136 OM 074 003 1.56 528 645 000 ION 439.15 43860 5520 000996 24 Circular 1 2446 OOOIN 0.% 1.37 047 743 176 0.12 540 139 140 139 075 041 031 153 510 651 0-00 999 W05 43925 7943 001007 24 Circular 1 2459 0-00170 0-89 135 046 742 174 018 528 141 142 140 2.87 043 1u I 500 6.54 000 7.99 44251 440.60 6387 002M IS Circular I 1210 OOL%O 0.74 076 1035 1054 247 0.10 5.10 143 144 136 008 076 006 2.83 797 571 000 16.52 US 05 44233 18126 001501 24 Circular 1 30A3 000470 105 169 052 979 255 0.31 828 143A 144A 144B 0.13 002 0.10 0.10 500 504 000 048 44364 44331 3270 001009 IS Circular 1 703 000000 022 0.15 0.14 329 0.39 0.17 5.17 143E 144B 136 0.11 068 007 3On 828 4.32 000 17N 44223 440.62 10707 0015M 24 Circular 1 3006 000520 I 174 053 9.89 261 0.18 8.46 145 146 144 0.18 0V 0.14 0.14 500 6.54 000 0.% US 35 447 SO 3824 001987 IS Circular 1 987 000020 025 0.18 0.15 5on 0" 0.13 5.13 147 148 144 007 074 005 263 773 5.77 000 15.38 W35 445.15 119.92 001001 24 GmWar 1 2452 OOMIO 1.IS 1.87 054 824 220 ON 797 149 150 148 0.17 066 0.11 2.58 757 5.SO 000 1506 45366 45162 101.95 002001 24 Circular 1 3467 000390 0.92 142 047 1065 268 0.16 773 151 152 150 0.13 074 0.10 0.10 500 6.54 000 061 454.16 45376 4005 000999 IS Circular I TOO 000010 025 0.18 0.15 355 045 0.19 5.19 153 154C 150 000 0On 225 720 4.53 000 13.33 46198 460.85 4525 0OU97 24 CimWar 1 3833 0W310 0.81 119 043 1t18 275 007 727 153A 154A 154B 008 074 006 006 500 5M 000 031 45999 45961 3779 001006 IS Circular 1 701 000000 0.18 0.11 0.It 2.87 0.31 022 522 153E 1SU3 1150 1 1 008 071 006 2.37 727 4.51 000 13.% 45887 455.13 18703 002M 24 Circular I 1 3466 0 W3301 0.88 1.33 lo46 1042 2.57 0.30 757 153C 154 154C 0.11 002 008 2.18 7.12 4.55 000 12.98 46369 462.26 57% 0025M 24 Circular 1 3880 000290 0.So 117 043 1t12 272 009 720 155 156 154 0.11 002 008 008 500 6.54 000 050 464.55 46379 37M 002011 IS Circular 1 9.92 000010 0.19 0.12 0.12 424 047 0.15 5.15 157 158 154 0is 074 Oil 202 6-88 598 OW 1229 469-69 465-85 15379 0OU97 24 Circular 1 3833 0W260 097 112 042 IOU 263 0D 712 159 160 159 0.16 074 0.12 0.12 500 6.54 000 077 47260 47222 3779 001006 IS Circular 1 702 OOONO 028 020 0.17 375 0.50 0.17 5.17 161 162A 159 000 0On 1.N 673 463 000 10.91 47523 47349 87.11 001997 24 C'milm 1 3463 ON210 0.37 112 042 9T1 225 0.15 6.88 161A 162 162A 006 073 OM 1.N 652 468 000 10.91 47928 47674 IM 88 0WOW 24 Circular 1 3468 ON210 0.37 112 042 9T1 225 022 673 163 164 162 007 075 0-06 0-06 5-00 654 0-00 036 48335 48294 4132 0A0992 IS Circular 1 697 0-00000 019 012 012 299 033 0D 523 165 166 162 002 075 002 1.70 633 6.14 Ono 1046 48025 47936 8743 001018 24 Circular 1 2433 000190 0.91 1.39 047 754 179 0.19 6.52 167 168 166 002 0V 001 168 623 6.16 000 10.37 48077 480.35 4231 000993 24 Circular 1 2442 000190 0.91 1.39 047 746 1.77 0.10 6.33 169 170A 1169 1 1 000 0On 028 5As 4.88 000 1.36 48290 48140 1 149.53 00IM31 is I Circular 1 I 1L40 000010 0.35 1 0.31 1021 4M 0" 0.57 623 169A 170 170A 0.16 065 0.11 0.11 500 504 000 0.54 484.50 48356 94.12 000999 IS Circular I TOO 000010 024 0.16 0.14 338 041 046 546 171 172 170 007 075 005 005 500 6.54 000 0.34 484.61 48371 90.18 000FO IS Circular 1 699 000000 0.19 0.12 0.12 295 0.32 0.51 5.51 171A 172A 170A 0.17 071 0.12 0.17 551 4.91 000 0.93 48336 483 on 3528 00IWO IS Circular 1 T07 000020 0.31 023 0.IS 399 0.55 0.15 5.66 201 202 200 000 0On 278 654 467 000 1708 41490 41395 IS83 006001 24 Circular 1 60.M 000510 073 1M 040 1646 4.% 0W 6.% 203 202A 204 006 OPI 005 005 500 6.54 000 0.31 42947 42832 57% 001998 IS Circular 1 989 000000 0.15 009 0.10 368 0.36 0M 526 203A 2W 204A 007 OT2 005 278 643 6.11 000 2863 42193 420M 3042 003M 24 Circular 1 4888 0014M 1.10 1.77 053 16.17 5.16 003 6.46 203B 1204A 202 ON OW 278 647 60 OW 2863 41953 41536 6957 0059M 24 CimWar 1 60A0 0014M 0.97 1.52 049 18.87 6.50 006 6.53 LD-229 STORM SEWER DESIGN COMPUTATIONS STORM FREQUENCY 10 PROJECT: Southwood Redevelopment - Village 1 LOCATION: COUNTY: Chadottesville Designed by: CG Checked by: UNITS ENGLISN PIPE NO. FROM POINT TOPOMT DRAM. AREA RUNOFF COEFF. C. 4 CA MLET TIME Mon. RAM FALL loflr 8 RUNOFF MVERTELEVATIO LENGTH of Pipe FL 12 SLOPE FUR. 13 SIZE onto Or SpsMb.) In 14 SHAPE Number of Pipes Capacity CFS 15 Faction Slope FuTt NORMAL FLOW FLOW TOME REMARKS 18 INCRE- METFF 5 ACCUM- MATED 6 Lmeml CFS TWO CFS 9 UPPER END 10 LOWER END II Do dr of FIow,do Ft Areaof Flow, An SqD Hm FL Vn FPS. 16 En FL INCRE- METFF Mlnmes 1 ACCUMU -LATED Minutes 17 REFERENCE I STA REFERENCE 2 STA. "A' Acre 3 205 206 204 0.13 074 009 009 1 5.10 6.51 000 14M 42305 422.43 3082 002012 18 C'rcalar 1 16.14 0 01740 1.13 142 045 1035 279 005 5.15 205A 120 206 000 000 000 500 000 000 14.11 42443 423.15 64.00 002M is Circular 1 16o!) 001600 1D9 1.37 045 1027 273 0.10 5.10 207 208 209B 0.14 076 0.11 240 628 6.15 000 I505 43079 430.08 3574 001987 24 Circular 1 34S5 000390 0.W 142 047 1062 267 005 6.34 207A 208A 209B 0.19 069 0.13 0.13 5W 504 0M 067 43079 430.08 3552 001999 is Circular 1 16o!) 0NOW 021 0.15 0.13 450 0.52 0.13 5.13 207E 208B 204 006 076 005 2.58 6M 4M 000 15.% 42998 428.82 5809 001 W7 24 Circular 1 3463 000440 0.95 147 048 1079 276 009 643 209 210 210B 009 070 006 224 602 623 000 14.15 43435 43323 5SW 002004 24 Circular 1 34k!) 000350 0.89 1.35 046 1048 260 009 6.H 209A 210A 210B 006 044 003 003 5W 504 0-00 0.14 43429 43397 32W 001000 IS Circular 1 700 000000 012 006 0-08 225 020 024 524 209E 210B 209 003 0-PI 002 229 611 4-r 0-00 1439 43313 43096 10873 001996 24 Circular 1 3462 0003W 0% 137 047 1031 262 017 628 211 212 210 003 078 003 2.18 597 624 000 1378 43509 434.45 32M 001998 24 Circular 1 3464 000330 0.88 1.33 046 1040 2.56 005 6.02 213 214 212 006 073 004 2.16 5% 6M 000 1363 43601 43520 4045 002002 24 Grcular 1 MkIS 000320 0.87 1.31 046 1038 2.54 007 5.97 215 216 1214 012 076 1 0-09 1 018 5-04 653 0-00 L19 43692 4M11 30-60 0-01993 12 Grcular 1 SAS OWN 032 021 0IS 536 080 ON S14 217 218 216 020 047 009 009 500 6.54 000 0.61 43890 438.17 16.12 OM529 12 Circular 1 8.21 0M30 0.18 0.10 0.It 6.13 0.77 004 5.04 219 220 214 007 079 006 193 578 6.30 0W 1221 43840 4M 32 8340 0024W 24 Circular 1 3&70 000260 0.77 112 042 1092 262 0.13 5.90 221 222 no 005 002 004 1.88 571 6.32 0W 11.SS 43884 43853 3071 001009 24 Circular 1 2462 000240 0.98 1.53 049 776 1.91 007 578 223 224 224B 006 061 004 0.53 542 4.93 0W 2.% 44531 44237 9800 003000 IS Circular 1 1212 000190 042 0.36 024 8.16 1d6 020 5.62 223A 224A 224B 0.17 074 0.13 0.13 500 504 0W 065 "128 440.98 2979 001007 IS Circular I 702 000010 026 I 0.18 If.15 3S7 045 0.14 5.14 223E 224B 222 026 057 0.18 0.81 562 4.88 0W 395 440.88 440.06 4095 002002 IS Circular 1 9.90 0W330 0.55 0.52 029 762 145 009 571 225 226 226A 012 076 0-09 0-09 5-00 654 0W 058 44730 4 70 2979 002014 IS Circular 1 993 000010 021 013 013 443 051 011 sit 225A 226A 224 020 068 0.14 023 5.11 6.51 0W 147 W56 44541 5742 002003 IS Circular 1 9.90 0M50 0.33 025 0.19 579 0.85 0.17 528 227 228 222 006 0V 004 103 545 640 000 668 440.78 440.08 3483 002010 is Circular 1 IA13 000360 067 0.77 035 870 1.85 007 5.52 229 230 228 0.18 058 0.10 0.98 535 643 000 640 "186 440.86 4976 002010 is Circular 1 IA13 0W330 066 074 034 860 1.&1 0.10 545 231 232 230 027 0.81 022 0.88 532 644 000 573 44277 44242 1771 001976 IS Circular 1 984 000700 069 069 033 832 176 004 5.35 233 234 232 024 039 009 Don 5.13 6.50 000 4.31 444.61 442.87 8587 002003 IS Circular 1 %90 000400 0.58 0.55 030 779 152 0.19 5.32 235 236 234 122 047 0.57 0.57 5W 6.54 0W 3M 44571 444.71 56% 001756 IS Circular 1 9.27 000290 0.55 0.52 029 7.14 134 0.13 5.13 237 238 224 000 000 027 525 4.98 0W I" W65 44545 5959 002014 IS Circular 1 9.93 000040 0.32 025 0.19 576 0.84 0.17 542 239 1240 238 0.10 066 007 007 500 6.54 0W 044 44720 W75 2226 002022 IS Circular 1 9.95 Owowl 0.is 0.11 0.It 407 044 009 5.09 241 242 238 028 074 021 021 5W 6.54 0W 1.34 45077 44909 8386 002003 IS Circular 1 %90 000040 0.31 024 0.IS 5M 0801 025 525 301 302 300 045 0.81 0.36 0.36 5W 6.54 0W 2.36 43101 430.91 950 001053 IS Circular 1 718 000120 049 045 027 524 0.92 003 5.03 401 402 400 000 000 1D9 627 473 0W 565 43121 430.91 3892 OOWN is Circular 1 9v!) 000260 0.81 097 039 5.83 1.34 0.11 6.38 403 1404A 060 069 041 041 500 6.54 0W 271 43235 431W 106-66 000703 IS Circular 1 SA7 000160 0W 0.58 030 469 0.% 0.38 5.38 403A 404A 402 0.is 056 008 0.50 538 4.95 000 312 43150 43131 M75 000710 IS Circular 1 5.90 000210 065 064 032 4.87 102 009 547 405 406 402 021 063 0.13 0.59 625 6.16 000 369 43237 43207 1005 002985 IS Circular 1 12o!) 0002% 047 043 026 865 164 002 627 407 408 406 0.11 058 006 046 591 6M 000 288 43852 43247 1M 89 003499 IS Circular 1 13.09 000180 040 0.34 022 855 1.53 0.34 625 409 410 408 ON 0-00 0-40 5-81 629 0-00 249 43972 43895 3846 002002 IS Circular 1 %% 000130 043 037 024 6M 113 010 591 411 412 410 0.14 055 008 021 524 647 000 1.38 W95 439.82 5658 1 0 0 19971 IS Clrcolm I 9A9 000040 0.32 024 10.19 568 0.82 0.17 540 411A 412A 412 oil 076 008 008 5-00 504 000 041 44225 "131 4712 0-01995 IS Circular 1 988 0-00000 017 010 0It 397 042 020 520 413 414 412 008 071 006 006 Son 6.54 000 0.36 44U9 44105 3682 002010 IS CircuW 1 9.92 000000 0.16 009 0.10 3.83 0.39 0.16 8.16 415 416B 410 ON Ono 0.is 571 4.. 000 1.11 446.38 444.00 4762 O04998 IS Circular 1 15.65 0M30 023 0.is 0.14 737 107 0.11 5.81 417 418 416 009 068 006 0.13 5.17 649 000 0.87 45186 45143 43.16 000996 IS Circular 1 6.98 000020 0.30 023 0.IS 3.89 0.53 0.19 5.36 417A 416 416A 007 053 004 0.17 536 4.95 000 10 45133 45101 3238 000988 IS Circular 1 6.% 000020 0.33 026 0.19 4.10 0.59 0.13 549 417E 416A 416B 001 069 001 0.is 549 4.W 000 1.11 45091 450.37 5395 001001 IS Circular 1 7.00 000030 0.34 027 020 4.17 061 022 571 419 420 419 0.11 065 007 007 5W 6.54 000 046 45230 45196 3327 001022 IS Circular 1 708 0000W 022 0.14 0.13 325 0.38 0.17 5.17 501A 500A Soo 000 000 000 500 000 823 444.26 44325 50% 001998 is Circular I 14A5 000640 0.50 0.% 039 862 1.95 0.10 5.10 LD-229 STORM SEWER DESIGN COMPUTATIONS STORM FREQUENCY 13 PROJECT: Southwood Redevelopment - Village 1 LOCATION: COUNTY: Chadottesville Designed by: CG Checked by: UNITS ENGLISN FROM POINT TOPOMT DRAM. AREA RUNOFF COEFF. 'C' 0 CA MLET TIME Minn. RAM FALL INHr 8 RUNOFF MVERT ELEVATIO LENGTH ofPipe FL 12 SLOPE FR. 13 SIZE (Du. Or SpnMtise) In 10 SHAPE Number ofPipes Capacity CFS IS Faction Slope FuTt NORMAL FLOW REMARKSAcre 18SOS INCRE METfF 5 ACCUM- MATED 6 Lml CFS TWO CFS 9 UPPER END 10 LOWER END II Dnshof FIow,M Ft Anvof Flow, An SgFr Hm FL Vn FPS. 16 En FL INMUNO. MED Mutes 7 REFERENCE STA REFERENCE 2 STA. 'A' 3 506 5M 003 071 002 028 5.18 500 ON 667 47955 479005457 001008 N GmWar 1 2231 0000% 074 106 041 628 136 jFnFPIPE 3507 508 506010 0M 0M 0M 50C 503 0W 655 48016 4796551 an 000985 N Circular 1 2265 0000% 074 106 040 620 136 18509 510 506 ON ON ON 5W OW ON 5M 48383 483 JO1958 001992 N Circular 1 3L93 0WO60 055 070 032 751 162 q601 600 166 155 0% 139 139 5W 654 0W 910 48221 J8096. 6263 0A1996 N Cumular 1 346E OWN) 0-70 098 039 929 2" it LD-347 PROJECT: Southwood Redevelopment -Village 1 DESIGNED BY: CG HYDRAULIC GRADE LINE ANALYSIS Checked: INCIDENCE PROBABILIT 10 Year INLET OR JUNCTION STA. INVERT EL. OUTFLOW PIPE DEPTH OF FLOW OUTFLOW PIPE OUTLET WATER SURFACE ELEV. DIA. PIPE Do diUmm) DESIGN DISCH, (Go (CFMMS) LENGTH PIPE L. (FVM) FRICTION SLOPE, Sfo (FTIFT) (INK FRICTION LOSS Hi LEW) JUNCTION LOSS SURFACE FLOW Adj. HI 1.3 Ht LEMA) Inlet SSliapiM? YIN 05 Al LEVM) FINAL H (FAh Inlet Water Ruda. Elevation Topai MH Top of IN Ele. APPROX. AEjuatment4 Vo C.W. Ho LEMA) N 14' g Hi(E�) 035'1,AX. M=9) SKEW A le K BeM H LEW) Sum HL LEVM) 1 2 3 4 5 6 8 9 10 11 12 13 14 15 16 16 17 18 19 126 420.000 128 418.000 2.50 420.000 30 27.754 24.95 0.00408 0.102 16.010 0.995 15.995 3.973 1.390 0.0 0.00 0.000 2.385 0.000 2.385 YES 1.193 1.294 421.294 437.500 O.K. 130 427.880 2.50 429.880 30 27.754 62.56 0.00408 0.255 15.995 0.993 11.104 1.915 0.670 0.0 0.00 0.000 1.663 0.000 1.663 YES 0.832 1.D87 431.340 446.920 O.K. 136 436.730 2.50 438.730 30 27.754 30.94 0.00408 0.126 11.104 0.479 9.894 1.520 0.532 0.0 0.00 0.000 1.011 0.391 1.011 YES 0.505 0.632 439.362 446.110 O.K. 144 442.330 2.00 443.930 24 16.522 181.26 0.00475 0.861 9.786 0.372 8.242 1.055 0.369 0.0 0.00 0.000 0.741 0.365 0.741 YES 0.370 1.232 446.109 454.810 O.K. 148 445.150 2.00 446.750 24 15.375 119.92 0.00411 0.493 8.242 0.264 10.648 1.761 0.616 0.0 0.00 0.000 0.880 0.311 0.880 YES 0.440 0.933 447.683 458.100 O.K. 150 451.620 2.00 453.220 24 15.064 101.95 0.00395 0.403 10.648 0.440 11.184 1.942 0.680 0.0 0.00 0.000 1.120 0.638 1.120 YES 0.560 0.963 454.582 460.860 O.K. 154C 460.850 2.00 462.450 24 13.330 45.25 0.00309 0.140 11.184 0.486 11.120 1.920 0.672 0.0 0.00 0.000 1.158 0.000 1.158 YES 0.579 0.719 463.169 468.240 O.K. 154 462.260 2.00 463.860 24 12.981 57.06 0.00293 0.167 11.120 0.480 10.940 1.858 0.650 0.0 0.00 0.000 1.130 0.345 1.130 YES 0.565 0.733 464.593 470.950 O.K. 158 1 1 465.850 1 2.00 467.450 1 24 1 12.286 153.791 0.00263 0.404 110.940 0.465 9.765 1.481 0.518 0.0 0.00 0.000 0.9831 0.676 10.983 YES 1 0.491 1 0.895 1 470.464 478.640 1 O.K. 162A 473.490 2.00 475.090 24 10.910 87.11 0.00207 0.180 9.765 0.370 9.774 1.483 0.519 0.0 0.00 0.000 0.889 0.000 0.889 YES 0.445 0.625 476.D01 483.300 O.K. 162 476.740 2.00 478.340 24 10.910 126.88 0.00207 0.263 9.774 0.371 7.542 0.883 0.309 0.0 0.00 0.000 0.680 0.192 0.680 YES 0.340 0.603 480.051 489.620 O.K. 166 479.360 2.00 480.960 24 10.461 87.43 0.00190 0.167 7.542 0.221 7.456 0.863 0.302 0.0 0.00 0.000 0.523 0.092 0.523 YES 0.261 0.428 481.388 491.970 O.K. 168 480.350 2.00 481.950 24 10.369 42.31 0.00187 0.079 7.456 0.216 9.289 1.340 0.469 0.0 0.00 0.000 0.685 0.080 0.685 YES 0.342 0.422 482.372 491.640 O.K. 170A 481.400 1.50 482.600 18 1.360 149.53 0.00015 0.022 4.343 0.073 3.989 0.247 0.086 0.0 0.00 0.000 0.160 0.000 0.160 YES 0.080 0.102 483.250 498.880 O.K. 170 483.560 1.25 484.560 15 0.539 94.12 0.00006 0.006 3.379 0.044 2.950 0.135 0.047 0.0 0.00 0.000 0.092 0.539 0.119 YES 0.060 0.D65 484.735 488.420 O.K. 172 483.710 1.25 484.735 15 0.340 90.18 0.00002 0.002 2.950 0.034 0.000 0.000 0.000 0.0 0.00 0.000 0.034 0.340 0.044 YES 0.022 0.024 484.797 489.010 O.K. 138 438.600 2.00 440.200 24 10.198 55.20 0.00181 0.100 7.432 0.214 7.423 0.856 0.299 0.0 0.00 0.000 0.514 0.206 0.514 YES 0.257 0.357 440.557 447.900 O.K. 140 439.250 2.00 440.850 24 9.992 79.43 0.00174 0.138 7.423 0.214 10.536 1.724 0.603 0.0 0.00 0.000 0.817 1.998 0.817 YES 0.409 0.547 441.397 445.030 O.K. 142 440.600 1.25 441.600 15 7.994 63.87 0.01364 0.871 10.536 0.431 0.000 0.000 0.000 0.0 0.00 0.000 0.431 7.994 0.560 YES 0.280 1.151 443.252 449.240 O.K. 136A 437.290 1.25 439.362 15 1.605 51.16 0.00055 0.028 4.624 0.083 4.695 0.342 0.120 0.0 0.00 0.000 0.203 0.303 0.203 YES 0.101 0.130 439.491 444.610 O.K. 134 437.900 1.25 439.491 15 1.014 44.59 0.00022 0.010 4.695 0.086 0.000 0.000 0.000 0.0 0.00 0.000 0.086 1.014 0.111 YES 0.056 0.D65 439.556 443.560 O.K. 144B 440.620 2.00 442.220 24 17.243 107.07 0.00517 0.554 9.894 0.380 3.285 0.168 0.059 0.0 0.00 0.000 0.439 0.306 0.439 YES 0.219 0.773 443.316 449.230 O.K. 144A 443.310 1.25 444.310 15 0.484 32.70 0.00005 0.002 3.285 0.042 0.000 0.000 0.000 0.0 0.00 0.000 0.D42�O4840.054 YES 0.027 0.029 444.339 449.610 O.K. 146 447.590 1.25 448.590 15 0.896 38.24 0.00017 0.007 4.999 0.097 0.000 0.000 0.000 0.0 0.00 0.000 0.097 0.896 0.126 YES 0.D63 0.070 448.660 454.880 O.K. LD-347 PROJECT: Southwood Redevelopment -Village 1 DESIGNED BY: CG HYDRAULIC GRADE LINE ANALYSIS Checked: INCIDENCE PROBABILIT 10 Year INLET OR JUNCTION STA. INVERT EL. OUTFLOW PIPE DEPTH OF FLOW OUTFLOW PIPE OUTLET WATER SURFACE ELEV. DIA. PIPE Do diUmm) DESIGN DISCH, (Go (CFMMS) LENGTH PIPE L. (FVM) FRICTION SLOPE, Sfo (FTIFT) (M44 FRICTION LOSS Hi LEW) JUNCTION LOSS SURFACE FLOW Adj. HI 1.3 Ht LEMA) Inlet SSliapiM? YIN 05 Al LEVM) FINAL H (FAh Inlet Water Ruda. Elevation Topai MH Top of IN Ele. APPROX. AEjuatment4 Vo C.W. Ho LEMA) N 14' g Hi(E�) 035'1,AX. M=9) SKEW A le K BeM H LEW) Sum HL (FAh 1 2 3 4 5 6 8 9 10 11 12 13 14 15 16 16 1 18 19 152 453.760 1.25 454.760 15 0.635 40.05 0.00009 0.003 3.547 0.049 0.000 0.000 0.000 0.0 0.00 0.000 0.049 0.635 0.063 YES 0.032 0.035 454.795 460.890 O.K. 154B 455.130 2.00 456.730 24 13.863 187.03 0.00334 0.626 10.417 0.421 2.873 0.128 0.045 1 0.0 0.00 0.000 0.466 0.257 0.466 YES 0.233 0.859 459.750 466.030 O.K. 154A 459.610 1.25 460.610 15 0.308 37.79 0.00002 0.001 2.873 0.032 0.000 0.000 0.000 0.0 0.00 0.000 0.032 0.308 0.042 YES 0.021 0.022 460.632 466.510 O.K. 156 463.790 1.25 464.790 15 0.504 37.80 0.00005 0.002 4.238 0.070 0.000 0.000 0.000 0.0 0.00 0.000 0.070 0.504 0.091 YES 0.045 0.047 464.837 471.430 O.K. 160 472.220 1.25 473.220 15 0.765 37.79 0.00012 0.005 3.753 0.055 0.000 0.000 0.000 0.0 0.00 0.000 0.055 0.765 0.071 YES 0.036 0.040 473.260 479.120 O.K. 164 482.940 1.25 483.940 15 0.360 41.32 0.00003 0.001 2.993 0.035 0.000 0.000 0.000 0.0 0.00 0.000 0.035 0.360 0.045 YES 0.023 0.024 483.964 490.030 O.K. 600 480.960 2.00 482.560 24 9.097 62.63 0.00144 0.090 9.289 0.335 0.000 0.000 0.000 0.0 10.00 0.000 0.335 9.097 0.435 YES 0.218 0.308 482.910 487.290 O.K. 172A 483.000 1.25 484.000 15 0.929 35.28 0.00018 0.006 3.989 0.062 0.000 0.000 0.000 0.0 0.00 0.000 0.062 0.589 0.080 YES 0.040 0.047 484.047 489.900 O.K. 132 438.380 1.25 439.491 15 0.237 48.27 0.00001 0.001 2.666 0.028 0.000 0.000 0.000 0.0 0.00 0.000 0.028 0.237 0.036 YES 0.018 0.019 439.510 443.200 O.K. LD-347 PROJECT: Southwood Redevelopment- Village I HYDRAULIC GRADE LINE ANALYSIS INCIDENCE PROBABILITY 10 Year DESIGNED BY: CG Checked: INLET OR STA. INVERT EL. OUTFLOW PIPE DEPTH OF FLOW UTFL PIPE OUTLET WATER SURFACE ELEV. DN. PIPE OO (INmm) DESIGN DISCH. DO (CFS/GMS) LENGTH PIPE Lo (FUND FRICTION SLOPE. Sk (FT/Fl) (M/M) FRICTION LOSS Hf (FUM) JUNCTION LOSS SURFACE FLOW PAI. HI 13 Hl (FVM) Inlid SMpi,? YM 05 Hl (FVM) FINAL H (FUM) INet MRr SURareJUNCTION EI.Hoo Top 01 MH T[goflnI0 APPROX. Ad.WeM9 V0 GOntr. HIP (FHA) h N4R8 WJKH k Banc! Sum HL (FUM) 1 2 3 4 5 6 8 9 10 11 3 15 16 16 1] 18 19200 h1.4210.0 415.550 202 413.950 2.00 415.550 24 1T.081 15.83 0.00508 0.080 16.462 1.052 18.8T3 5.5310 2.988 0.000 2.988 YES 1.494 1.5T4 41T.124 420.100 O.K. 204A 415.360 2.00 417.124 24 28.62T 69.57 0.01426 0.992 18.873 1.383 16.169 4.0600 2.804 0.000 2SN YES 1.402 2.394 420.503 435.860 O.K. 204 420.720 2.00 422.320 24 28.627 30.42 0.01426 0.434 16.169 1.015 10.789 1.8070 0.00 0.000 1.648 0.318 1.648 YES 0.824 1.258 423.578 434.770 O.K. 206 422.430 1.50 423.630 18 14.715 30.82 0.01748 0.539 10.353 0.416 10.270 1.638 0.573 0.0 0.00 0.000 0.989 0.605 0.989 YES 0.495 1.033 424.663 435.090 O.K. 120 423.150 1.50 424.663 18 14.110 64.00 0.01607 1.029 10.270 0.409 6.392 0.634 0.222 0.0 0.00 0.000 0.631 0.000 0.631 YES 0.316 1.344 426.008 431.910 O.K. 108 424.530 1.50 426.008 18 3.187 61.43 0.00082 0.050 6.392 0.159 9.143 1.298 0.454 0.0 0.00 0.000 0.613 0.237 0.613 YES 0.306 0.357 426.365 432.850 O.K. 110 427.940 1.25 428.940 15 2.651 92.51 0.00150 0.139 9.143 0.325 6.724 0.702 0.246 0.0 0.00 0.000 0.570 0.145 0.570 YES 0.285 0.424 432.458 437.000 O.K. 112A 432.200 1.25 433.200 15 2.506 127.73 0.00134 0.171 6.724 0.176 9.216 1.319 0.462 0.0 0.00 0.000 0.637 0.593 0.828 YES 0.414 0.585 435.179 a3.870 O.K. 112 438.260 1.25 439.260 15 1.913 43.07 0.00078 0.034 9.216 0.330 7.153 0.794 0.278 0.0 0.00 0.000 0.608 0.910 0.790 YES 0.395 0.429 441.122 445.910 O.K. 114 440.940 1.25 441.940 15 1.003 83.63 0.00021 0.018 7.153 0.199 5.741 0.512 0.179 0.0 0.00 0.000 0.378 0.382 0.491 YES 0.246 0.263 445.334 449.790 O.K. 116 445.220 1.25 446.220 15 0.621 76.90 0.00008 0.006 5.741 0.128 0.000 0.000 0.000 0.0 0.00 0.000 0.128 0.621 0.166 YES 0.083 0.089 448.479 453.350 O.K. 202A 428.320 1.25 429.320 15 0.314 57.56 0.00002 0.001 3.675 0.052 0.000 0.000 0.000 0.0 0.00 0.000 0.052 0.314 0.068 YES 0.034 0.035 429.623 433.280 O.K. 2088 428.820 2.00 430.420 24 15.903 58.09 0.00440 0.256 10.789 0.452 10.617 1.750 0.613 0.0 0.00 0.000 1.064 0.226 1.064 YES 0.532 0.788 431.208 436.260 O.K. 208 430.080 2.00 431.680 24 15.050 35.74 0.00394 0.141 10.617 0.438 10.512 1.716 0.601 0.0 0.00 0.000 1.038 0.658 1.038 YES 0.519 0.660 432.340 437.130 O.K. 2108 430.960 2.00 432.560 24 14.392 108.73 0.00360 0.392 10.512 0.429 10.483 1.706 0.597 0.0 0.00 0.000 1.026 0.110 1.026 YES 0.513 0.905 434.029 440.350 O.K. 210 433.230 2.00 434.830 24 14.154 55.90 0.00349 0.195 10.483 0.427 10.397 1.679 0.587 0.0 0.00 0.000 1.014 0.374 1.014 YES 0.507 0.702 435.532 441.830 O.K. 212 434.450 2.00 436.050 24 13.781 32.04 0.00331 0.106 10.397 0.420 10.375 1.671 0.585 0.0 0.00 0.000 1.005 0.156 1.005 YES 0.502 0.608 436.658 441.870 1 O.K. 214 435.200 2.00 436.800 24 13.625 40.45 0.00323 0.131 10.375 0.418 10.917 1.851 0.648 0.0 0.00 0.000 1.066 0.275 1.066 YES 0.533 0.663 437.463 442.430 O.K. 220 436.320 2.00 437.920 24 12.210 83.40 0.00259 0.216 10.917 0.463 7.762 0.936 0.327 0.0 0.00 0.000 0.790 0.359 0.790 YES 0.395 0.611 439.172 445.620 O.K. 222 438.530 2.00 440.130 24 11.851 30.71 0.00244 0.075 7.762 0.234 8.700 1.175 0.411 0.0 0.00 0.000 0.6451 0.246 0.645 YES 0.323 0.398 440.528 445.350 O.K. 228 440.080 1.50 441.280 18 6.680 34.83 0.00360 0.125 8.700 0.294 8.603 1.149 0.402 0.0 0.00 0.00 00.696 0.281 0.696 YES 0.348 0.473 441.753 445.590 O.K. 230 440.860 1.50 442.060 18 6.399 49.76 0.00331 0.164 8.603 0.287 8.321 1.075 0.376 0.0 0.00 0.000 0.664 0.669 0.664 YES 0.332 0.496 442.556 44T.620 O.K. 232 442.420 1.25 443.420 15 5.730 17.71 0.00701 0.124 8.321 0.269 7.794 0.943 0.330 0.0 0.00 0.000 0.599 1.417 O.M YES 0.389 0.513 443.933 448.T30 O.K. 234 442.872 1.25 443.933 15 4.314 86.87 0.0039T 0.345 T.T94 0.236 7.140 0.792 ILM 0.0 0.00 0.000 0.513 0.598 0.513 YES 0.256 0.602 445.187 449.9T0 O.K. 236 444.T70 1.25 445.T70 15 3.T16 56.94 0.00295 0.168 T.140 0.198 0.000 0.000 0.000 0.0 0.00 0.000 0.198 3.716 0.25T YES 0.129 0.296 446.260 450.140 O.K. 106 425.550 1.25 426.550 15 0.314 7100 0.00002 0.001 2.884 0.032 0.000 0.000 0.000 0.0 0.00 0.000 0.032 0.314 0.042 YES 0.021 0.022 426.572 432.440 O.K. LD-347 PROJECT: Southwood Redevelopment- Village I HYDRAULIC GRADE LINE ANALYSIS INCIDENCE PROBABILITY 10 Year DESIGNED BY: CG Checked: INLET OR STA. INVERT EL. OUTFLOW PIPE DEPTH OF FLOW UTFL PIPE OUTLET WATER SURFACE ELEV. DN. PIPE Do (INmm) DESIGN DISCH. Do (CFS/GMS) LENGTH PIPE Lo (FUND FRICTION SLOPE.M (FT/M (M/M) FRICTION LOSS Hf (FUM) JUNCTION LOSS SURFACE FLOW PAT. HI 13 Hl (FVM) Inlid SMpi,? YM 05 Hl (FVM) FINAL H (FUM) INet Wafer SuRareJUNCTION EI.Hoo Top of MH T[goflnI0 APPROX. Ad.WeM9 V0 GOntr. HIP (Ff/M) m M4 g K Banc! H (FVM) Sum HL (FUM) 1 2 3 4 5 6 8 9 10 11 14 15 16 16 1] 18 19208A h(E�M)SIK7 430.080 1.50 431.280 18 0.6T1 35.52 0.00004 0.001 4.500 0.079 0.000 0.0000.00 0.000 0.0T9 0.6T1 0.102 YES 0.051 0.052 431.332 43T.260 O.K. 210A 433.970 1.25 434.970 15 0.136 32.00 0.00000 0.000 2.250 0.020 0.000 0.0000.00 0.000 0.020 0.136 0.026 YES 0.013 0.013 434.983 440.340 O.K. 216 436.110 1.00 437.463 12 1.189 30.60 0.00099 0.030 5.555 0.120 6.128 0.583 0.204 0.0 0.00 0.000 0.324 0.581 0.421 YES 0.211 0.241 437.704 442.760 O.K. 218 438.170 1.00 438.970 12 0.608 16.12 0.00026 0.004 6.128 0.146 0.000 0.000 0.000 0.0 0.00 0.000 0.146 0.608 0.190 YES 0.095 0.099 439.084 443.900 O.K. 224B 440.060 1.25 441.060 15 3.950 40.95 0.00333 0.136 7.615 0.225 8.161 1.034 0.362 0.0 0.00 0.000 0.587 0.718 0.587 YES 0.294 0.430 441.490 446.840 O.K. 224 442.3]0 1.25 443.370 15 2.964 98.00 0.00188 0.164 8.161 0.259 5.792 0.521 0.182 0.0 0.00 0.000 0.441 0.178 0.441 YES 0.220 0.404 445.731 450.600 O.K. 226A 445.410 1.25 446.410 15 1.473 57.42 0.00046 0.027 5.792 0.130 4.425 0.304 0.106 0.0 0.00 0.000 0.237 0.891 0.308 YES 0.154 0.180 446.886 452.830 O.K. 226 446.700 1.25 447.T00 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 44T.752 453.320 O.K. 224A 440.980 1.25 441.980 15 0.645 29.79 0.00009 0.003 3.5T2 0.050 0.000 0.000 0.000 0.0 0.00 0.000 0.050 0.645 0.064 YES 0.032 0.035 442.015 447.320 O.K. 238 445.450 1.25 446.450 15 1.436 59.59 0.00044 0.026 5.T61 0.129 5.638 0.494 0.173 0.0 0.00 0.000 0.302 0.000 0.302 YES 0.151 0.M 446.971 454.280 O.K. 242 449.090 1.25 450.090 15 1.341 83.86 0.00038 0.032 5.638 0.123 0.000 0.000 0.000 0.0 0.00 0.000 0.123 1.341 0.160 YES 0.080 0.112 451.081 456.900 O.K. 240 446.750 1.25 44].T50 15 0.438 22.26 0.00004 0.001 4.0T2 0.064 0.000 0.000 0.000 0.0 0.00 0.000 0.064 0.438 0.084 YES 0.042 0.043 44T.793 451.720 0.K. LD647 PROJECT: Southwood Redevelopment - VillageI HYDRAULIC GRADE LINE ANALYSIS INCIDENCE PROBABILITY 10 Year DESIGNED BY: CG Checked: INLET OR JUNCTION STA INVERT EL. OUTFLOW PIPE DEPTH OF FLOW OUTFLOW PIPE OUTLET WATER SURFACE ELEV DIA PIPE Do (Iwmm) DESIGN DISCH, Q. (CFSM.MS) LENGTH PIPE Lo (FM) FRICTION SLOPE, SIo (FT/M (MRA) FRICTION LOSS Hf (FUM) JUNCTION LOSS SURFACE FLOW Ad, Ht 13 Ht (FM) him Sim M? YM 0.5 Ht (FM) FINAL H (FVM) Inlet Water Surface Elevation Top of MH Topoflnlet EA, APPROX. AdluAm M? V. cou, Ho (FVM) N M2g Hi(E pm SWMAX. (V=9) SKEW Angle K R d H (FM) Sum HL (FUND 1 2 3 4 5 6 8 9 10 11 12 13 14 15 i6 16 1 18 19 300 431.910 302 430.910 1.25 431.910 15 2.355 9.50 0.00118 0.011 5.241 0.107 0.000 0.000 0.000 0.0 0.00 0.000 0.107 2.355 0.139 YES 0.069 0.081 431.991 432.M O.K LD-347 PROJECT: Southwood Redevelopment - VillageI DESIGNED BY: CG HYDRAULIC GRADE LINE ANALYSIS Checked: INCIDENCE PROBABILITI 10 Year INLET OR JUNCTION STA INVERT EL OUTFLOW PIPE DEFER OF FLOW OUTFLOW PIPE WTIET WATER SURFACE ELEV. OIA PIPE Do (IW.) DESIGN OISCH. DO (CFS/CMS) LENGTH PIPE LO (FVM) FRICDON SLOPE, Sk, (FT/FT) (") FRICTION LOSS Hf (FVM) JUNCTION LOSS SURFACE FLOW PALM 13 Hl (FM) InIO SIMPIM? YM OS Hl (FVM) FINAL H (FUM) INIS WaRr SuR. Eavadon Top of MH TVMlow Eay. APPROX, miawooeM9 V. Cmtr. No (FVM) m VIZ2g HI(Fapn) 0.31YMAX. (V132g) SiOm Anne K R¢M H (FM) Sum HL (FVM) 1 2 3 4 5 6 T 8 9 10 11 12 13 14 15 16 16 17 18 19 400 432.110 402 430.910 1.50 432.110 18 5.653 38.92 0.00258 0.100 5.829 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 3.690 10.05 0.00291 0.029 8.653 0.291 8.554 1.136 0.398 0.0 0.00 0.000 0.688 0.813 0.895 YES 0.447 0.4T 433.547 436.910 O.K. 408 432.470 1.25 433.547 15 2.8T 172.89 0.00M 0.305 8.5541 0.2841 6.717 0.701 0.245 0.0 0.00 0.000 0.529 0.388 0.529 YES 0.265 0.570 438.918 445.650 O.K. 410 438.950 1.25 439.950 15 2.489 38.46 0.00132 0.051 6.717 0.175 7.371 0.844 0.295 0.0 0.00 0.000 0.470 0.000 0.470 YES 0.235 0.286 440.236 448.380 O.K. 416B 444.000 1.25 445.000 15 1.110 47.62 0.00026 0.013 7.371 0.211 4.171 0.270 0.095 0.0 0.00 0.000 0.305 0.000 0.305 YES 0.153 0.165 446.605 456.800 O.K. 416A 450.370 1.25 451.370 15 1.110 53.95 0.00026 0.014 4.171 0.068 4.103 0.261 0.091 0.0 0.001 0.000 0.159 0.044 0.159 YES 0.080 0.094 451.464 458.060 O.K. 416 451.010 1.25 452.010 15 1.066 32.38 0.00024 0.008 4.103 0.065 3.886 0.234 0.082 0.0 0.00 0.000 0.147 0.193 0.147 YES 0.074 0.082 452.092 458.020 O.K. 418 451.430 1.25 452.430 15 0.873 43.16 0.00016 0.007 3.886 0.059 3.247 0.164 0.057 0.0 0.00 0.000 0.116 0.415 0.151 YES 0.075 0.082 452.512 458.710 O.K. 420 451.960 1.25 452.960 15 0.458 33.27 0.00004 0.001 3.247 0.041 0.000 0.000 0.000 0.0 0.00 0.000 0.041 0.458 0.053 YES 0.027 0.028 452.988 458.560 O.K. 404A 431.310 1.25 432.480 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 1.364 56.58 0.00041 1 0.023 1 5.684 1 0.125 3.970 1 0.245 1 0.086 1 0.0 0.00 0.000 0.211 0.504 0.274 YES 0.137 0.160 441.266 445.970 O.K. 414 441.050 1.25 442.050 15 0.360 36.82 0.00003 i 0.001 i 3.833 i 0.057 i 0.000 i 0.000 i 0.000 i 0.0 0.00 0.000 0.057 0.360 0.074 YES 0.037 0.038 442.088 446.240 O.K. 412A 441.310 1.25 442.310 15 0.408 1 47.12 0.00004 1 0.002 1 3.970 0.061 1 0.000 0.000 1 0.000 1 0.0 0.00 0.000 0.061 1 0.408 1 0.0801 YES 1 0.0401 0.041 1 442.423 1 449.890 1 O.K. PROJECT South redd Redeveopment - Village 1 SHEEL UNITS OF FNGLISH CULVERT DESIGNER: REVIEWER: DESIGN FORM LD-269 DATE: 2/9/2021 DATE: ROAD CODNTY Albemarle (Zone 2) CULVERT 501 VA NOAA Station Charlottesville HYDROLOGICAL DATA Method: RATIONAL Drainage Area: 3317 Acres Time ofConcenhation 5 Minutes DESIGN FLOWS SMdr. EI -- Eli= L= S= SKEW= Ekv_4.= ELHWd= 45454 45294 R 452A6 H 7134 a 524% 00 Roadway Width 283 ft ROADWAY R ft ________________________________________________ Her ._ ______ ________________ DEPRESSION 0. ..n" Rod 0013 ELEVATION Stream Bed 456.53 R __________ Ek= Road Lerigh 1N Freeboard= Shkk. EkvRt=—ft ___ H TW DEPTH TW TW VEL. Cknrol low IS 44912 fl SuPce Type PAVED XVAIU i It 0.27 ft 325 fps 443 25 ft R,L(years) FLOW(efs) 10 Design 8,23 2 Check 6.43 25 Max. 1035 CULVERT DESCRIPTION: TYPE: Single/Multiple Conforming Inlet Edge DwAptioo: Smooth Tapemd Inlet Throat TOTAL FLOW Q c6 110WRISR BARREL ON c@ HEADWATER CALCULATIONS CONTROL HEADWATER ELEV ft OUTLET VEL fps MINIMUM SHOULDER ELEV. R COMbI RIS INLET CONTROL OUTLET CONTROL Sin a/Multi le Confonnin / Broken Back Colverts H ffi HWi ft FALL ft ELHVh R TW a do ft (d D)/2 ft ho a ke H fl U11Wo R MATERIAL SHAPE Sim (in) N Memang5 n Concrete Circular IB 1 001 823 82 L12 168 008 45454 0.27 I'll 1,31 1.31 020 0.84 45127 454.54 12.30 643 64 0.98 147 008 45433 0.25 098 124 124 020 0.51 450,87 454.33 1L52 1035 104 L32 198 0.08 454.84 0.30 124 1,37 1.37 020 1133 451,82 454.84 13.09 Broken Back Culvert TAILWATER DATA: TAILWATER RESULTS: ROADWAY DATA: ROADWAY OVERTOPPING: LENGTH Elev. SKEW° bannel Shape Tnngukr = 0.03$ Dischorc cfs Elevation ft Flow depM ft Vekwdy fps eadway WMflSfl 28.7 D.1harge c6 Overtopping Dkdarge Cfs Overtopping Ekvadon ft Bonin WMn,a Side Slope 4:(H:1V) Slope RL(H:1V) Channel Slope. BM 0.00 unfine Type PAVED 50.00 i, 44352 02] 325 d.42 ip M Bond SmaBon, R 456SS sf 0 000Side 18.00 lock 44350 025 3.06 -englb of Road, Il 100 heck 0 ON 0.0830 44355 0.30 3.64 0 ON Dismnce levadon n. TECHNICAL FOOTNOTES: (1) USEQ/NBFORBOXCULVERTS (4) ELhi=HWi+ELi(INVERT OF INLET CONTROL SECTION) (6)he-7W or(do + W)(WHICHEVER IS GREATER) (2)HWi/D= HW/D OR HWi/D FROM DESIGN CHARTS (5) TW BASED ON DOWNSTREAM CONTROL OR FLOW (7)H=[I+kc+(29n2LpIli 9'V/2g (3) FALL =HWI-(ELHWd-ELsB; FALL IS ZERO FOR CULVERTS ON GRADE DEPTH IN CHANNEL SUBSCRIPT DEFDSITIONS: COMMENTS / DISCUSSION: CULVERT BARREL SELECTED HWd DESIGN HEADWATER i INLET SIZE: n HWi HW IN INLET CONTROL o OUTLET SHAPE: MATERIAL: HWo HW IN OUTLET CONTROL sf Sucanded ENTRANCE: @ culvert face CULVERTSOFT by ENSOFTEC, INC. PROJECT South redd Redeveopment - Village 1 SHEEI UNITS OF ENGLISH CULVERT DESIGNER: REVIEWER: DESIGN FORM LD-269 DATE: 2/9/2021 DATE: ROAD COONTY Albemarle (Zone 2) CULVERT 509 VA NOAA SbBon Charlottesville HYDROLOGICAL DATA Method: INPUT Drainage Ares: 1.102 Time ofConcenhetion 5 DESIGN FLOWS SMdr. Ek-- Eli= L= S= SKEW= Ekv_ D. = ELHWd= 48500 483-91 R 48183 R 1958 R 1996M 00 Roadway Width 10 ft ROADWAY R ft _ �________________________________________________ Her ___________________Stream DEPRESSION ..n" Bed 0013 ELEVATION Bed 488 W R __________ Ek, Road length 25 Freeboard= Shkk. Elev. Rt=—ft ___ H TW DEPTH TW TW VEL Charnel low El 481" R Su0ce Type PAVED XVALUEI R 0.55 ft 5.02 fps 683.52 R R,L(years) FLOW(cfs) 10 Design 5,26 2 Check 215 25 Max. 6.62 CULVERT DESCRIPTION: TYPE: Sioglr/Moltiple Conforming Inlet Edge Description: Smooth Tapemd Inlet Throat TOTAL FLOW Q Ciscft FIX>W REIt BARREL O/N HEADWATER CALCULATIONS CONTROL HEADWATER ELEV R O1ITLET VEL fps M]Nl O SHOULDER ELEV. R COMMENTS INLET CONTROL OUTLET CONTROL Sin a/Multi le Conformin / Broken Beck Culverts HWm HWi ft FALL R ELHVh R TW a do ft (d Dy2 ft he a ke H fl ELHWo R MATERIAL SHAPE Sin (in) N M9nrang5 n Concrete Circular 24 1 001 526 53 0.59 117 008 48500 0.55 0,81 141 140 020 006 484.91 48500 749 225 23 044 0.73 008 48456 OAO 052 126 126 020 001 484.71 484.71 5,85 662 b 6 0.67 1.33 0,08 485.16 T60 0,91 1,46 146 020 0.10 48500 485.16 8,00 Broken Back Culvert TAILWATER DATA: TAILWATER RESULTS: ROADWAY DATA: ROADWAY OVERTOPPING: LENGTH Elev. SKEW° hannel Shape Triangular = 0.035 Dischar,,e cfs Elevation ft Flow depM ft Vekwdy fps oadway WMtllfl 10 D.Iharge c6 0—pp-g Dkdarge cfs Overtopping Ekvadon ft Bottum WMtgfl Side Slope Lb(HAV) Side Slope RL(H:1V) Channel Slope. fVft 0.00 unfine Type PAVED 3.00 e- 4840] 0.55 5.02 d2O6 op M Road Elevation, ft a88 sf 0 000 4.00 lock 48392 O60 4.06 -englb of Road,If 26 heck 0 ON 0.0830 484.12 060 5.32 0 ON Distance levadon n. TECHNICAL, FOOTNOTES: (1) USEQ/NBFORBOXCULVERTS (4) ELhi=HWi+ELi(INVERT OF INLET CONTROL SECTION) (6)he-7W or(do + D/2)(WHICHEVER IS GREATER) (2)HWi/D= HW/D OR HWYD FROM DESIGN CHARTS (5)TW BASED ON DOWNSTREAM CONTROL OR FLOW (7)H=[I+kc+(29n2L)/R13'V/2g (3) FALL =HWI-(ELHWd-ELsB; FALL IS ZERO FOR CULVERTS ON GRADE DEPTH IN CHANNEL SUBSCRIPT DEFINITIONS: COMMENTS / DISCUSSION: CULVERT BARREL SELECTED HWd DESIGN HEADWATER i INLET SIZE: n HWi HW IN INLET CONTROL o OUTLET SHAPE: MATERIAL: HWo HW IN OUTLET CONTROL sf Sucamhed ENJEiiNCE: @ culvert face CULVERTSOFT by ENSOFTEC, INC. If ' �� 1. 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M vdum.l.ubi.leM1 m.. lead llb/v1 MRB llzzl .en.Mnlmw�a Ym akIYMa6 Drainage ANDIA s Yitl(un. I —I M�nrpce•sprePml wmgmmal+ml wwlw.vl O nl PFmomm AM,INEIF for xemwalln DA A MNW) TGE.1 SS Pna DemlgmnM T..I—1 vWmeI. DA A (eo) RAai GRA UGH D,ae, ,=G ED 1..1 CHICK OK. TOTAL RUNOFF REDUCTION IN D.A. A UF) - .0.AIlb/p) 6.18 US T AAIIb/p) P. TOTAL Pxauxoxus REMAIN mOAMRAPnnxG RUNOFF NEDurnax PRACTICES Ix DA. A pb/pl D.. IIE WATER QUA OFF COMYIWNCE TAB FOR STIE COMYfLINCE CALCULATIONS a. nlsTanvlA I rz DceenR nPs NO nvlLmm M., GF--1 y At PE., P,AT TE D 1.e1 nM TULIMP GMFOTMMANAGED TURF AMA CHECK: OF. TOTALPxOEPxoxDS REARAM REQUIRED ON SITE IIbN.10 lOGUULPHOMHMRUl AAII pI TOTAL PHOSPHORUS PINIONED WITHOUT R llb/p) TmALPxOSPx AAIIbN.I TOTAL PHOSPHORUS LOAD REDUCTION MERGE NA A Ilb/y TOTAL PHOSPHORUS REMAINING AMR APPUR xG FAR LOAD REDUCTIONS IN DA A (ROI) F. SEE WATER QUALITY COMPLIANCE TAB FOR SITE COMPLIANCE CALCULATIONS O GEN MOVED VHTH RUNOFF REDUCTION PRACTICES:: AAAAIItyN.I ROWERS aui TOTAL NITROGEN REMOVED IN DA A (lb/p) Kb1 Nbep�lrtl Ybenba xHARRA M1nnl� Pemmnl lmm YpAeem Nbepnrtlb M1nwnaxy xbynn L"A Ewa.m (x) Mnmm ObA Pmmlr,) PmaaulYa) I-) m IRRI I RR) Ie (RN1 n 1M) 7.InfiFmlon RNI ended Deteneon Pone (NN) znee�nowm o xnepom I,IA) mmm oommm 00000 � rtlmGw RemoyEowrtx Rxo uTOICAL AALNj xrnox PRAen¢S Ix DAAR/M . N,uGAGU.COM,GANCETABPoRSNFGLCVLITONSLLn)wm.Only) FAA mM wnUna l^o NRI 13 .Ino RR) 11 a,1U,,d NMP (n. A) 000mm 000mm I GI Drainage Area B DAHma-AAFF.RRINCAN, L—I rnarPce•spreUe&1 wmgmmal+e&1 Em lw+ml TANI MADE—Te.II.Xe Fnr Re lii DA BMW) TnM .e PAR D.bymml TPNFN vW.me: Ds a(WI I S6909 UNE D—RD, BAR D(..LOR ED,.., CHEON ON. ECTALRUNGM REDUCTION IN DA. B (W) A.B nbna� A. B nbnn ARPL PHOSPHORUS REMAINING AFTER APPLYING RUNOFF REDUCTION PRACTICES IN DA. B nb/yrl ]5 SEE WATER AUTYCOMYLWNCE TAB FOR SITE COMYWNCE EALCULATLONS 1-IN, PlIlt— ,nn RO a. n1Y�aTL1 rz OceenM nBs U, nv lLmm Mm1PS— F 1 NOR T- --DE-Rug nz Xd NE.,P,ATA1 A I NOR TED(..I� nwK. TmIALIMPGEDwRFARRRTREATEDI-I REHECR OF TOTALPHOEPHORUS REMOVAL REQUIRED ON SITE nbnn ABnbm) TUEAL PHOSPHORUS RUMOREDA.. nbnn TOTAL PHOSPHORUSNnIl .A.nbmL A.n mL TUEALPHOSPHORUS REMAININGAFTERAPPLYING BMP LOAD REDUCTIONS IN Dn Bnb/rrl 0.25 SEE WATER QUALINCOMPLIANCE TAB FOR SITE COMPLWNCECALCU(ATIONS A.B�lbnrl NORNET GEMOVEOwRXOOT A. B:1bnrl TOTALXITROGEX REMOVED IN DA. B (RhOm. —1 Nbep�lmtl Wb..btl xlbeRen M1nsLiir Pemwsl Imm YPAeem Nbepnrtlb M1nwea Br XbyenlW Ewa.m(x) M.mm nb.L mm M� PnMm M) MI m IRRI e IRRI le (AN) n 1RRI 7. nfiPminn RR) ended Demoeoo Pone IRRI znee�nowm o HBe,/Oce a(ARI mmm oommm 00000 TOTAL RUNOFF REDUE�CEN IN A A(W) B,LGL .UTRD U. SEE WA PERWAUTY EEMIPLIANEETAB fORLrE fAINlRl10N5 (InJonnttbn (Mly) FAA mM wnUna l^o wl 13 .Ino MR) 11 -1U.,d BMP (n. RR) 000mm 000mm 1s PRE Olnsite 2S zPre Offsite K PRE Combined Subcat Reach Aon Llnk 2021-05-27 Full Routing Prepared by Timmons Gro Area Listing (selected nodes) Area CN Description (acres) (subcatchment-numbers) 0.720 98 Paved parking, HSG B (1S, 2S) 15.550 60 Woods, Fair, HSG B (1S, 2S) 16.270 62 TOTAL AREA Printed 5/28/2021 2021-05-27 Full Routing Prepared by Timmons Gro Soil Listing (selected nodes) Area Soil Subcatchment (acres) Group Numbers 0.000 HSG A 16.270 HSG B 1S, 2S 0.000 HSG C 0.000 HSG D 0.000 Other 16.270 TOTAL AREA Printed 5/28/2021 2021-05-27 Full Routing Prepared by Timmons Gro Ground Covers (selected nodes) Printed 5/28/2021 HSG-A HSG-B HSG-C HSG-D Other Total Ground Subcatchment (acres) (acres) (acres) (acres) (acres) (acres) Cover Numbers 0.000 0.720 0.000 0.000 0.000 0.720 Paved parking 1S, 2S 0.000 15.550 0.000 0.000 0.000 15.550 Woods, Fair 1S, 2S 0.000 16.270 0.000 0.000 0.000 16.270 TOTAL AREA 2021-05-27 Full Routing Type 1124-hr 1-YR Rainfall=3.05" Prepared by Timmons Group Printed 5/28/2021 HVdroCADO 10.00-20 s/n 10074 © 2017 HVdroCAD Software Solutions LLC Paae 5 Time span=5.00-20.00 hrs, dt=0.05 hrs, 301 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment 1S: PRE Onsite Runoff Area=14.750 ac 1.42% Impervious Runoff Depth>0.33" Tc=6.0 min CN=61 Runoff=7.42 cfs 0.404 of Subcatchment 2S: Pre Offsite Runoff Area=1.520 ac 33.55% Impervious Runoff Depth>0.80" Tc=6.0 min CN=73 Runoff=2.30 cfs 0.101 of Link 3L: PRE Combined Inflow=9.67 cfs 0.504 of Primary=9.67 cfs 0.504 of Total Runoff Area = 16.270 ac Runoff Volume = 0.504 of Average Runoff Depth = 0.37" 95.57% Pervious = 15.550 ac 4.43% Impervious = 0.720 ac 2021-05-27 Full Routing Prepared by Timmons Gro Type 1124-hr 1-YR Rainfall=3.05" Summary for Subcatchment 1S: PRE Onsite Runoff = 7.42 cfs @ 12.00 hrs, Volume= 0.404 af, Depth> 0.33" Printed 5/28/2021 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 0.210 98 Paved parking, HSG B 0.000 61 >75% Grass cover, Good, HSG B 14.540 60 Woods, Fair, HSG B 14.750 61 Weighted Average 14.540 98.58% Pervious Area 0.210 1.42% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 1S: PRE Onsite Hydrograph ❑ RunoH 742 cfs Type II 24-hr 1-YR Rainfall=3.05" 6 Runoff Area=14.750 ac 5 RunoffVolume=0404 of Runoff Depth>0.33" 41 Tc=6.0 min 3 CN=61 Time (hours) 2021-05-27 Full Routing Prepared by Timmons Gro Type 1124-hr 1-YR Rainfall=3.05" Hydrograph for Subcatchment 1S: PRE Onsite Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 5.00 0.19 0.00 0.00 5.25 0.20 0.00 0.00 5.50 0.22 0.00 0.00 5.75 0.23 0.00 0.00 6.00 0.24 0.00 0.00 6.25 0.26 0.00 0.00 6.50 0.27 0.00 0.00 6.75 0.29 0.00 0.00 7.00 0.30 0.00 0.00 7.25 0.32 0.00 0.00 7.50 0.33 0.00 0.00 7.75 0.35 0.00 0.00 8.00 0.37 0.00 0.00 8.25 0.38 0.00 0.00 8.50 0.40 0.00 0.00 8.75 0.42 0.00 0.00 9.00 0.45 0.00 0.00 9.25 0.47 0.00 0.00 9.50 0.50 0.00 0.00 9.75 0.52 0.00 0.00 10.00 0.55 0.00 0.00 10.25 0.58 0.00 0.00 10.50 0.62 0.00 0.00 10.75 0.67 0.00 0.00 11.00 0.72 0.00 0.00 11.25 0.78 0.00 0.00 11.50 0.86 0.00 0.00 11.75 1.18 0.00 0.00 12.00 2.02 0.08 7.42 12.25 2.15 0.11 1.65 12.50 2.24 0.13 1.17 12.75 2.30 0.14 0.90 13.00 2.35 0.15 0.79 13.25 2.40 0.17 0.70 13.50 2.44 0.18 0.63 13.75 2.47 0.19 0.57 14.00 2.50 0.20 0.52 14.25 2.53 0.20 0.49 14.50 2.55 0.21 0.47 14.75 2.58 0.22 0.45 15.00 2.60 0.23 0.43 15.25 2.63 0.23 0.41 15.50 2.65 0.24 0.39 15.75 2.67 0.25 0.37 16.00 2.68 0.25 0.35 16.25 2.70 0.26 0.34 16.50 2.72 0.26 0.33 16.75 2.73 0.27 0.33 17.00 2.75 0.28 0.32 17.25 2.77 0.28 0.31 17.50 2.78 0.29 0.30 17.75 2.80 0.29 0.30 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 18.00 2.81 0.30 0.29 18.25 2.82 0.30 0.28 18.50 2.84 0.30 0.27 18.75 2.85 0.31 0.26 19.00 2.86 0.31 0.25 19.25 2.87 0.32 0.25 19.50 2.88 0.32 0.24 19.75 2.89 0.33 0.23 20.00 2.90 0.33 0.22 Printed 5/28/2021 2021-05-27 Full Routing Type 1124-hr 1-YR Rainfall=3.05" Prepared by Timmons Group Printed 5/28/2021 Summary for Subcatchment 2S: Pre Offsite Runoff = 2.30 cfs @ 11.98 hrs, Volume= 0.101 af, Depth> 0.80" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24-hr 1-YR Rainfall=3.05 Area (ac) CN 0.510 98 Paved parking, HSG B 0.000 61 >75% Grass cover, Good, HSG B 1.010 60 Woods, Fair, HSG B 1.520 73 Weighted Average 1.010 66.45% Pervious Area 0.510 33.55% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 2S: Pre Offsite Hydrograph ■ Rurwff Type II 24-hr 1-YR Rainfall=3.05r� Runoff Area=1.520 ac Runoff Volume=0.101 of Runoff Depth>0.80" i.0 min CN=j73 12 13 14 15 16 17 18 19 20 Time (hours) 2021-05-27 Full Routing Prepared by Timmons Gro Type 1124-hr 1-YR Rainfall=3.05" Hydrograph for Subcatchment 2S: Pre Mite Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 5.00 0.19 0.00 0.00 5.25 0.20 0.00 0.00 5.50 0.22 0.00 0.00 5.75 0.23 0.00 0.00 6.00 0.24 0.00 0.00 6.25 0.26 0.00 0.00 6.50 0.27 0.00 0.00 6.75 0.29 0.00 0.00 7.00 0.30 0.00 0.00 7.25 0.32 0.00 0.00 7.50 0.33 0.00 0.00 7.75 0.35 0.00 0.00 8.00 0.37 0.00 0.00 8.25 0.38 0.00 0.00 8.50 0.40 0.00 0.00 8.75 0.42 0.00 0.00 9.00 0.45 0.00 0.00 9.25 0.47 0.00 0.00 9.50 0.50 0.00 0.00 9.75 0.52 0.00 0.00 10.00 0.55 0.00 0.00 10.25 0.58 0.00 0.00 10.50 0.62 0.00 0.00 10.75 0.67 0.00 0.00 11.00 0.72 0.00 0.00 11.25 0.78 0.00 0.00 11.50 0.86 0.00 0.02 11.75 1.18 0.05 0.32 12.00 2.02 0.33 2.25 12.25 2.15 0.39 0.37 12.50 2.24 0.43 0.25 12.75 2.30 0.46 0.18 13.00 2.35 0.49 0.16 13.25 2.40 0.51 0.14 13.50 2.44 0.53 0.12 13.75 2.47 0.55 0.11 14.00 2.50 0.57 0.10 14.25 2.53 0.58 0.09 14.50 2.55 0.60 0.09 14.75 2.58 0.61 0.08 15.00 2.60 0.62 0.08 15.25 2.63 0.64 0.08 15.50 2.65 0.65 0.07 15.75 2.67 0.66 0.07 16.00 2.68 0.67 0.06 16.25 2.70 0.68 0.06 16.50 2.72 0.69 0.06 16.75 2.73 0.70 0.06 17.00 2.75 0.71 0.06 17.25 2.77 0.72 0.05 17.50 2.78 0.73 0.05 17.75 2.80 0.73 0.05 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 18.00 2.81 0.74 0.05 18.25 2.82 0.75 0.05 18.50 2.84 0.76 0.05 18.75 2.85 0.77 0.05 19.00 2.86 0.77 0.04 19.25 2.87 0.78 0.04 19.50 2.88 0.79 0.04 19.75 2.89 0.79 0.04 20.00 2.90 0.80 0.04 Printed 5/28/2021 2021-05-27 Full Routing Prepared by Timmons Gro Type 1124-hr 1-YR Rainfall=3.05" Printed 5/28/2021 Summary for Link 3L: PRE Combined Inflow Area = 16.270 ac, 4.43% Impervious, Inflow Depth > 0.37" for 1-YR event Inflow = 9.67 cfs @ 12.00 hrs, Volume= 0.504 of Primary = 9.67 cfs @ 12.00 hrs, Volume= 0.504 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs 10 9 8 7 6 0 5 LL 4 3 2 1 0 Link 3L: PRE Combined Hydrograph Time (hours) ❑ Inflow ❑ Primary 2021-05-27 Full Routing Prepared by Timmons Gro Type 1124-hr 1-YR Rainfall=3.05" Hydrograph for Link X: PRE Combined Time Inflow Elevation Primary (hours) (cfs) (feet) (cfs) 5.00 0.00 0.00 0.00 5.25 0.00 0.00 0.00 5.50 0.00 0.00 0.00 5.75 0.00 0.00 0.00 6.00 0.00 0.00 0.00 6.25 0.00 0.00 0.00 6.50 0.00 0.00 0.00 6.75 0.00 0.00 0.00 7.00 0.00 0.00 0.00 7.25 0.00 0.00 0.00 7.50 0.00 0.00 0.00 7.75 0.00 0.00 0.00 8.00 0.00 0.00 0.00 8.25 0.00 0.00 0.00 8.50 0.00 0.00 0.00 8.75 0.00 0.00 0.00 9.00 0.00 0.00 0.00 9.25 0.00 0.00 0.00 9.50 0.00 0.00 0.00 9.75 0.00 0.00 0.00 10.00 0.00 0.00 0.00 10.25 0.00 0.00 0.00 10.50 0.00 0.00 0.00 10.75 0.00 0.00 0.00 11.00 0.00 0.00 0.00 11.25 0.00 0.00 0.00 11.50 0.02 0.00 0.02 11.75 0.32 0.00 0.32 12.00 9.67 0.00 9.67 12.25 2.02 0.00 2.02 12.50 1.42 0.00 1.42 12.75 1.09 0.00 1.09 13.00 0.94 0.00 0.94 13.25 0.84 0.00 0.84 13.50 0.75 0.00 0.75 13.75 0.68 0.00 0.68 14.00 0.61 0.00 0.61 14.25 0.58 0.00 0.58 14.50 0.56 0.00 0.56 14.75 0.54 0.00 0.54 15.00 0.51 0.00 0.51 15.25 0.49 0.00 0.49 15.50 0.47 0.00 0.47 15.75 0.44 0.00 0.44 16.00 0.41 0.00 0.41 16.25 0.40 0.00 0.40 16.50 0.39 0.00 0.39 16.75 0.38 0.00 0.38 17.00 0.37 0.00 0.37 17.25 0.37 0.00 0.37 17.50 0.36 0.00 0.36 17.75 0.35 0.00 0.35 Time Inflow Elevation Primary (hours) (cfs) (feet) (cfs) 18.00 0.34 0.00 0.34 18.25 0.33 0.00 0.33 18.50 0.32 0.00 0.32 18.75 0.31 0.00 0.31 19.00 0.30 0.00 0.30 19.25 0.29 0.00 0.29 19.50 0.28 0.00 0.28 19.75 0.27 0.00 0.27 20.00 0.26 0.00 0.26 Printed 5/28/2021 2021-05-27 Full Routing Type // 24-hr 10-YR Rainfall=5.58" Prepared by Timmons Group Printed 5/28/2021 HVdroCADO 10.00-20 s/n 10074 © 2017 HVdroCAD Software Solutions LLC Paoe 12 Time span=5.00-20.00 hrs, dt=0.05 hrs, 301 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment 1S: PRE Onsite Runoff Area=14.750 ac 1.42% Impervious Runoff Depth>1.56" Tc=6.0 min CN=61 Runoff=43.82 cfs 1.914 of Subcatchment 2S: Pre Offsite Runoff Area=1.520 ac 33.55% Impervious Runoff Depth>2.52" Tc=6.0 min CN=73 Runoff=7.18 cfs 0.320 of Link 3L: PRE Combined Inflow=51.04 cfs 2.234 of Primary=51.04 cfs 2.234 of Total Runoff Area = 16.270 ac Runoff Volume = 2.234 of Average Runoff Depth = 1.65" 95.57% Pervious = 15.550 ac 4.43% Impervious = 0.720 ac 2021-05-27 Full Routing Prepared by Timmons Gro Type/1 24-hr 10-YR Rainfall=5.58" Summary for Subcatchment 1S: PRE Onsite Runoff = 43.82 cfs @ 11.98 hrs, Volume= 1.914 af, Depth> 1.56" Printed 5/28/2021 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 0.210 98 Paved parking, HSG B 0.000 61 >75% Grass cover, Good, HSG B 14.540 60 Woods, Fair, HSG B 14.750 61 Weighted Average 14.540 98.58% Pervious Area 0.210 1.42% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 1S: PRE Onsite Hydrograph ■ Runoff Time (hours) 2021-05-27 Full Routing Prepared by Timmons Gro 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 0.23 11.50 1.58 0.01 0.66 11.75 2.16 0.11 6.78 12.00 3.70 0.66 42.62 12.25 3.94 0.78 6.87 12.50 4.10 0.86 4.60 12.75 4.21 0.92 3.44 13.00 4.31 0.97 2.93 13.25 4.39 1.02 2.56 13.50 4.46 1.06 2.27 13.75 4.52 1.09 2.03 14.00 4.58 1.12 1.82 14.25 4.63 1.15 1.69 14.50 4.67 1.18 1.62 14.75 4.72 1.20 1.55 15.00 4.76 1.23 1.47 15.25 4.80 1.25 1.40 15.50 4.84 1.27 1.32 15.75 4.88 1.30 1.24 16.00 4.91 1.32 1.16 16.25 4.94 1.33 1.12 16.50 4.97 1.35 1.09 16.75 5.00 1.37 1.06 17.00 5.03 1.39 1.04 17.25 5.06 1.41 1.01 17.50 5.09 1.42 0.98 17.75 5.11 1.44 0.95 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 18.00 5.14 1.45 0.92 18.25 5.16 1.47 0.89 18.50 5.19 1.48 0.87 18.75 5.21 1.50 0.84 19.00 5.23 1.51 0.81 19.25 5.25 1.52 0.78 19.50 5.27 1.54 0.75 19.75 5.29 1.55 0.72 20.00 5.31 1.56 0.68 Printed 5/28/2021 2021-05-27 Full Routing Prepared by Timmons Gro Type/1 24-hr 10-YR Rainfall=5.58" Summary for Subcatchment 2S: Pre Offsite Runoff = 7.18 cfs @ 11.97 hrs, Volume= 0.320 af, Depth> 2.52" Printed 5/28/2021 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 0.510 98 Paved parking, HSG B 0.000 61 >75% Grass cover, Good, HSG B 1.010 60 Woods, Fair, HSG B 1.520 73 Weighted Average 1.010 66.45% Pervious Area 0.510 33.55% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 2S: Pre Offsite Hydrograph ■ Rurwff Time (hours) 2021-05-27 Full Routing Prepared by Timmons Gro Type/1 24-hr 10-YR Rainfall=5.58" Hydrograph for Subcatchment 2S: Pre Mite Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 5.00 0.35 0.00 0.00 5.25 0.37 0.00 0.00 5.50 0.40 0.00 0.00 5.75 0.42 0.00 0.00 6.00 0.45 0.00 0.00 6.25 0.47 0.00 0.00 6.50 0.50 0.00 0.00 6.75 0.52 0.00 0.00 7.00 0.55 0.00 0.00 7.25 0.58 0.00 0.00 7.50 0.61 0.00 0.00 7.75 0.64 0.00 0.00 8.00 0.67 0.00 0.00 8.25 0.70 0.00 0.00 8.50 0.74 0.00 0.00 8.75 0.78 0.00 0.00 9.00 0.82 0.00 0.01 9.25 0.86 0.00 0.02 9.50 0.91 0.01 0.02 9.75 0.96 0.01 0.03 10.00 1.01 0.02 0.04 10.25 1.07 0.03 0.06 10.50 1.14 0.04 0.07 10.75 1.22 0.05 0.10 11.00 1.31 0.08 0.14 11.25 1.43 0.11 0.20 11.50 1.58 0.16 0.30 11.75 2.16 0.39 1.76 12.00 3.70 1.32 6.90 12.25 3.94 1.48 1.02 12.50 4.10 1.60 0.67 12.75 4.21 1.68 0.49 13.00 4.31 1.75 0.42 13.25 4.39 1.81 0.36 13.50 4.46 1.86 0.32 13.75 4.52 1.91 0.28 14.00 4.58 1.95 0.25 14.25 4.63 1.99 0.23 14.50 4.67 2.03 0.22 14.75 4.72 2.06 0.21 15.00 4.76 2.10 0.20 15.25 4.80 2.13 0.19 15.50 4.84 2.16 0.18 15.75 4.88 2.18 0.17 16.00 4.91 2.21 0.16 16.25 4.94 2.24 0.15 16.50 4.97 2.26 0.15 16.75 5.00 2.28 0.14 17.00 5.03 2.31 0.14 17.25 5.06 2.33 0.14 17.50 5.09 2.35 0.13 17.75 5.11 2.37 0.13 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 18.00 5.14 2.39 0.12 18.25 5.16 2.41 0.12 18.50 5.19 2.43 0.12 18.75 5.21 2.45 0.11 19.00 5.23 2.46 0.11 19.25 5.25 2.48 0.10 19.50 5.27 2.50 0.10 19.75 5.29 2.51 0.09 20.00 5.31 2.53 0.09 Printed 5/28/2021 2021-05-27 Full Routing Prepared by Timmons Gro Type/1 24-hr 10-YR Rainfall=5.58" Printed 5/28/2021 Summary for Link 3L: PRE Combined Inflow Area = 16.270 ac, 4.43% Impervious, Inflow Depth > 1.65" for 10-YR event Inflow = 51.04 cfs @ 11.98 hrs, Volume= 2.234 of Primary = 51.04 cfs @ 11.98 hrs, Volume= 2.234 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Link 3L: PRE Combined Hydrograph 0 Inflow ❑ Primary Time (hours) 2021-05-27 Full Routing Prepared by Timmons Gro Type/1 24-hr 10-YR Rainfall=5.58" Hydrograph for Link X: PRE Combined Time Inflow Elevation Primary (hours) (cfs) (feet) (cfs) 5.00 0.00 0.00 0.00 5.25 0.00 0.00 0.00 5.50 0.00 0.00 0.00 5.75 0.00 0.00 0.00 6.00 0.00 0.00 0.00 6.25 0.00 0.00 0.00 6.50 0.00 0.00 0.00 6.75 0.00 0.00 0.00 7.00 0.00 0.00 0.00 7.25 0.00 0.00 0.00 7.50 0.00 0.00 0.00 7.75 0.00 0.00 0.00 8.00 0.00 0.00 0.00 8.25 0.00 0.00 0.00 8.50 0.00 0.00 0.00 8.75 0.00 0.00 0.00 9.00 0.01 0.00 0.01 9.25 0.02 0.00 0.02 9.50 0.02 0.00 0.02 9.75 0.03 0.00 0.03 10.00 0.04 0.00 0.04 10.25 0.06 0.00 0.06 10.50 0.07 0.00 0.07 10.75 0.10 0.00 0.10 11.00 0.15 0.00 0.15 11.25 0.43 0.00 0.43 11.50 0.96 0.00 0.96 11.75 8.54 0.00 8.54 12.00 49.52 0.00 49.52 12.25 7.89 0.00 7.89 12.50 5.27 0.00 5.27 12.75 3.94 0.00 3.94 13.00 3.35 0.00 3.35 13.25 2.92 0.00 2.92 13.50 2.59 0.00 2.59 13.75 2.31 0.00 2.31 14.00 2.07 0.00 2.07 14.25 1.92 0.00 1.92 14.50 1.84 0.00 1.84 14.75 1.76 0.00 1.76 15.00 1.68 0.00 1.68 15.25 1.59 0.00 1.59 15.50 1.50 0.00 1.50 15.75 1.41 0.00 1.41 16.00 1.32 0.00 1.32 16.25 1.27 0.00 1.27 16.50 1.24 0.00 1.24 16.75 1.21 0.00 1.21 17.00 1.18 0.00 1.18 17.25 1.14 0.00 1.14 17.50 1.11 0.00 1.11 17.75 1.08 0.00 1.08 Time Inflow Elevation Primary (hours) (cfs) (feet) (cfs) 18.00 1.05 0.00 1.05 18.25 1.01 0.00 1.01 18.50 0.98 0.00 0.98 18.75 0.95 0.00 0.95 19.00 0.91 0.00 0.91 19.25 0.88 0.00 0.88 19.50 0.84 0.00 0.84 19.75 0.81 0.00 0.81 20.00 0.78 0.00 0.78 Printed 5/28/2021 2021-05-27 Full Routing Type 1124-hr 100-YRRainfall=9.16" Prepared by Timmons Group Printed 5/28/2021 HVdroCADO 10.00-20 s/n 10074 © 2017 HVdroCAD Software Solutions LLC Paoe 19 Time span=5.00-20.00 hrs, dt=0.05 hrs, 301 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment 1S: PRE Onsite Runoff Area=14.750 ac 1.42% Impervious Runoff Depth>4.00" Tc=6.0 min CN=61 Runoff=110.65 cfs 4.912 of Subcatchment 2S: Pre Offsite Runoff Area=1.520 ac 33.55% Impervious Runoff Depth>5.45" Tc=6.0 min CN=73 Runoff=14.99 cfs 0.690 of Link 3L: PRE Combined Inflow=125.62 cfs 5.602 of Primary=125.62 cfs 5.602 of Total Runoff Area = 16.270 ac Runoff Volume = 5.602 of Average Runoff Depth = 4.13" 95.57% Pervious = 15.550 ac 4.43% Impervious = 0.720 ac 2021-05-27 Full Routing Prepared by Timmons Gro Type II 24-hr 100-YR Rainfall=9.16" Printed 5/28/2021 Summary for Subcatchment 1S: PRE Onsite Runoff = 110.65 cfs @ 11.97 hrs, Volume= 4.912 af, Depth> 4.00" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24-hr 100-YR Rainfall=9.16" Area (ac) CN Description 0.210 98 Paved parking, HSG B 0.000 61 >75% Grass cover, Good, HSG B 14.540 60 Woods, Fair, HSG B 14.750 61 Weighted Average 14.540 98.58% Pervious Area 0.210 1.42% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 1S: PRE Onsite Hydrograph --- � , 1...,,,,,.,,,,,,,,.......,,,,,,,,. =_- c == 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Time (hours) ■ Rurwff 2021-05-27 Full Routing Prepared by Timmons Gro Type II 24-hr 100-YR Rainfall=9.16" Hydrograph for Subcatchment 1S: PRE Onsite Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 5.00 0.58 0.00 0.00 5.25 0.61 0.00 0.00 5.50 0.65 0.00 0.00 5.75 0.69 0.00 0.00 6.00 0.73 0.00 0.00 6.25 0.77 0.00 0.00 6.50 0.82 0.00 0.00 6.75 0.86 0.00 0.00 7.00 0.91 0.00 0.00 7.25 0.95 0.00 0.00 7.50 1.00 0.00 0.00 7.75 1.05 0.00 0.00 8.00 1.10 0.00 0.00 8.25 1.15 0.00 0.00 8.50 1.21 0.00 0.00 8.75 1.28 0.00 0.00 9.00 1.35 0.00 0.05 9.25 1.42 0.00 0.15 9.50 1.49 0.01 0.24 9.75 1.57 0.01 0.36 10.00 1.66 0.02 0.53 10.25 1.76 0.03 0.74 10.50 1.87 0.05 1.03 10.75 2.00 0.07 1.44 11.00 2.15 0.11 1.99 11.25 2.34 0.15 2.97 11.50 2.59 0.22 4.46 11.75 3.54 0.59 26.40 12.00 6.07 2.05 106.54 12.25 6.47 2.32 15.79 12.50 6.73 2.51 10.38 12.75 6.92 2.64 7.68 13.00 7.07 2.75 6.48 13.25 7.20 2.85 5.62 13.50 7.32 2.93 4.96 13.75 7.42 3.01 4.41 14.00 7.51 3.08 3.93 14.25 7.59 3.14 3.65 14.50 7.67 3.20 3.48 14.75 7.75 3.25 3.32 15.00 7.82 3.31 3.15 15.25 7.88 3.36 2.98 15.50 7.95 3.40 2.81 15.75 8.01 3.45 2.64 16.00 8.06 3.49 2.46 16.25 8.11 3.53 2.36 16.50 8.16 3.57 2.30 16.75 8.21 3.61 2.24 17.00 8.26 3.64 2.18 17.25 8.31 3.68 2.12 17.50 8.35 3.71 2.05 17.75 8.39 3.75 1.99 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 18.00 8.44 3.78 1.93 18.25 8.48 3.81 1.87 18.50 8.52 3.84 1.80 18.75 8.55 3.87 1.74 19.00 8.59 3.90 1.68 19.25 8.62 3.93 1.61 19.50 8.66 3.95 1.55 19.75 8.69 3.98 1.48 20.00 8.72 4.00 1.42 Printed 5/28/2021 2021-05-27 Full Routing Prepared by Timmons Gro Type II 24-hr 100-YR Rainfall=9.16" Printed 5/28/2021 Summary for Subcatchment 2S: Pre Offsite Runoff = 14.99 cfs @ 11.97 hrs, Volume= 0.690 af, Depth> 5.45" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24-hr 100-YR Rainfall=9.16" Area (ac) CN Description 0.510 98 Paved parking, HSG B 0.000 61 >75% Grass cover, Good, HSG B 1.010 60 Woods, Fair, HSG B 1.520 73 Weighted Average 1.010 66.45% Pervious Area 0.510 33.55% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, 0 LL Subcatchment 2S: Pre Offsite Hydrograph MOMMEMME MO MENIU ilNiii WE MOMENOMME OEM (, A:31 MIMIAL--0 MONEENEEME■ NEW-l"T:�1'!S�l�T1T.! MENEENEEMEN NEFONW"Mm"N" MENEENEEME■ �L�i'liL'�il1i•1L'1YlL•�1JrJi■ MENEENEEME■ NEEMENEW.0"M # MENEENEEMEN NEEMEMi 611wU iWIE -_--- MOMME NEEMEM ____EK�1.kz '/ ------- /' -- __- l5 / t3 V lu 11 lL 1;1 14 15 lb I 18 19 [u Time (hours) ■ Rurwff 2021-05-27 Full Routing Prepared by Timmons Gro Type II 24-hr 100-YR Rainfall=9.16" Hydrograph for Subcatchment 2S: Pre Mite Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 5.00 0.58 0.00 0.00 5.25 0.61 0.00 0.00 5.50 0.65 0.00 0.00 5.75 0.69 0.00 0.00 6.00 0.73 0.00 0.00 6.25 0.77 0.00 0.00 6.50 0.82 0.00 0.01 6.75 0.86 0.00 0.01 7.00 0.91 0.01 0.02 7.25 0.95 0.01 0.03 7.50 1.00 0.02 0.03 7.75 1.05 0.02 0.04 8.00 1.10 0.03 0.05 8.25 1.15 0.04 0.06 8.50 1.21 0.05 0.08 8.75 1.28 0.07 0.09 9.00 1.35 0.09 0.11 9.25 1.42 0.11 0.12 9.50 1.49 0.13 0.14 9.75 1.57 0.15 0.16 10.00 1.66 0.18 0.19 10.25 1.76 0.22 0.23 10.50 1.87 0.26 0.28 10.75 2.00 0.32 0.35 11.00 2.15 0.39 0.45 11.25 2.34 0.49 0.61 11.50 2.59 0.62 0.84 11.75 3.54 1.21 4.33 12.00 6.07 3.15 14.17 12.25 6.47 3.48 1.99 12.50 6.73 3.71 1.29 12.75 6.92 3.86 0.95 13.00 7.07 4.00 0.80 13.25 7.20 4.11 0.69 13.50 7.32 4.21 0.61 13.75 7.42 4.30 0.54 14.00 7.51 4.38 0.48 14.25 7.59 4.45 0.44 14.50 7.67 4.52 0.42 14.75 7.75 4.59 0.40 15.00 7.82 4.65 0.38 15.25 7.88 4.71 0.36 15.50 7.95 4.76 0.34 15.75 8.01 4.82 0.32 16.00 8.06 4.86 0.29 16.25 8.11 4.91 0.28 16.50 8.16 4.95 0.27 16.75 8.21 5.00 0.27 17.00 8.26 5.04 0.26 17.25 8.31 5.08 0.25 17.50 8.35 5.12 0.24 17.75 8.39 5.16 0.24 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 18.00 8.44 5.20 0.23 18.25 8.48 5.23 0.22 18.50 8.52 5.27 0.21 18.75 8.55 5.30 0.21 19.00 8.59 5.34 0.20 19.25 8.62 5.37 0.19 19.50 8.66 5.40 0.18 19.75 8.69 5.43 0.17 20.00 8.72 5.45 0.17 Printed 5/28/2021 2021-05-27 Full Routing Prepared by Timmons Gro Type II 24-hr 100-YR Rainfall=9.16" Printed 5/28/2021 Summary for Link 3L: PRE Combined Inflow Area = 16.270 ac, 4.43% Impervious, Inflow Depth > 4.13" for 100-YR event Inflow = 125.62 cfs @ 11.97 hrs, Volume= 5.602 of Primary = 125.62 cfs @ 11.97 hrs, Volume= 5.602 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Link 3L: PRE Combined Hydrograph ■ InMov ■ Primary Time (hours) 2021-05-27 Full Routing Prepared by Timmons Gro Type II 24-hr 100-YR Rainfall=9.16" Hydrograph for Link X: PRE Combined Time Inflow Elevation Primary (hours) (cfs) (feet) (cfs) 5.00 0.00 0.00 0.00 5.25 0.00 0.00 0.00 5.50 0.00 0.00 0.00 5.75 0.00 0.00 0.00 6.00 0.00 0.00 0.00 6.25 0.00 0.00 0.00 6.50 0.01 0.00 0.01 6.75 0.01 0.00 0.01 7.00 0.02 0.00 0.02 7.25 0.03 0.00 0.03 7.50 0.03 0.00 0.03 7.75 0.04 0.00 0.04 8.00 0.05 0.00 0.05 8.25 0.06 0.00 0.06 8.50 0.08 0.00 0.08 8.75 0.09 0.00 0.09 9.00 0.16 0.00 0.16 9.25 0.28 0.00 0.28 9.50 0.38 0.00 0.38 9.75 0.52 0.00 0.52 10.00 0.71 0.00 0.71 10.25 0.97 0.00 0.97 10.50 1.31 0.00 1.31 10.75 1.79 0.00 1.79 11.00 2.43 0.00 2.43 11.25 3.58 0.00 3.58 11.50 5.30 0.00 5.30 11.75 30.74 0.00 30.74 12.00 120.71 0.00 120.71 12.25 17.78 0.00 17.78 12.50 11.67 0.00 11.67 12.75 8.63 0.00 8.63 13.00 7.27 0.00 7.27 13.25 6.31 0.00 6.31 13.50 5.56 0.00 5.56 13.75 4.95 0.00 4.95 14.00 4.41 0.00 4.41 14.25 4.09 0.00 4.09 14.50 3.90 0.00 3.90 14.75 3.72 0.00 3.72 15.00 3.53 0.00 3.53 15.25 3.34 0.00 3.34 15.50 3.15 0.00 3.15 15.75 2.95 0.00 2.95 16.00 2.76 0.00 2.76 16.25 2.64 0.00 2.64 16.50 2.57 0.00 2.57 16.75 2.50 0.00 2.50 17.00 2.44 0.00 2.44 17.25 2.37 0.00 2.37 17.50 2.30 0.00 2.30 17.75 2.23 0.00 2.23 Time Inflow Elevation Primary (hours) (cfs) (feet) (cfs) 18.00 2.16 0.00 2.16 18.25 2.09 0.00 2.09 18.50 2.02 0.00 2.02 18.75 1.95 0.00 1.95 19.00 1.87 0.00 1.87 19.25 1.80 0.00 1.80 19.50 1.73 0.00 1.73 19.75 1.66 0.00 1.66 20.00 1.58 0.00 1.58 Printed 5/28/2021 9S To Dry PID\r43 10P 01 Wd ae] ki I 7S To Biorttion 2 8P BIORETENTION 2 11S Onsite l�nrouted 4 5S Offsite To Bioretention 1 4S Onsi To Bioretention �D 6 P ZBIORETENTION 1 POST Combined Onsite Unrouted 5 Subcat Reach Aon Link 2021-05-27 Full Routing Prepared by Timmons Grc Area Listing (selected nodes) Area CN Description (acres) (subcatchment-numbers) 5.840 61 >75% Grass cover, Good, HSG B (4S, 7S, 9S, 11 S, 12S) 8.970 98 Paved parking, HSG B (4S, 5S, 7S, 9S, 11S, 12S) 1.490 60 Woods, Fair, HSG B (4S, 5S, 7S, 11S, 12S) 16.300 81 TOTAL AREA Printed 5/28/2021 2021-05-27 Full Routing Prepared by Timmons Gro Soil Listing (selected nodes) Area Soil Subcatchment (acres) Group Numbers 0.000 HSG A 16.300 HSG B 4S, 5S, 7S, 9S, 11S, 12S 0.000 HSG C 0.000 HSG D 0.000 Other 16.300 TOTAL AREA Printed 5/28/2021 2021-05-27 Full Routing Prepared by Timmons Gro Printed 5/28/2021 Ground Covers (selected nodes) HSG-A HSG-B HSG-C HSG-D Other Total Ground Subcatchment (acres) (acres) (acres) (acres) (acres) (acres) Cover Numbers 0.000 5.840 0.000 0.000 0.000 5.840 >75% Grass cover, Good 4S, 7S, 9S, 11S, 12S 0.000 8.970 0.000 0.000 0.000 8.970 Paved parking 4S, 5S, 7S, 9S, 11S, 12S 0.000 1.490 0.000 0.000 0.000 1.490 Woods, Fair 4S, 5S, 7S, 11S, 12S 0.000 16.300 0.000 0.000 0.000 16.300 TOTAL AREA 2021-05-27 Full Routing Prepared by Timmons Gro Type 1124-hr 1-YR Rainfall=3.05" Printed 5/28/2021 Time span=5.00-20.00 hrs, dt=0.05 hrs, 301 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment 4S: Onsite To Bioretention 1 Runoff Area=4.480 ac 59.82% Impervious Runoff Depth>1.37" Tc=6.0 min CN=83 Runoff=11.48 cfs 0.510 of Subcatchment 5S: Offsite To Bioretention 1 Runoff Area=1.520 ac 33.55% Impervious Runoff Depth>0.80" Tc=6.0 min CN=73 Runoff=2.30 cfs 0.101 of Subcatchment 7S: To Bioretention 2 Runoff Area=2.360 ac 58.05% Impervious Runoff Depth>1.30" Tc=6.0 min CN=82 Runoff=5.77 cfs 0.256 of Subcatchment 9S: To Dry Pond 3 Runoff Area=7.010 ac 60.49% Impervious Runoff Depth>1.37" Tc=6.0 min CN=83 Runoff=17.96 cfs 0.799 of Subcatchment 11S: Onsite Unrouted 4 Runoff Area=0.630 ac 17.46% Impervious Runoff Depth>0.54" Tc=6.0 min CN=67 Runoff=0.61 cfs 0.028 of Subcatchment 12S: Onsite Unrouted 5 Runoff Area=0.300 ac 20.00% Impervious Runoff Depth>0.58" Tc=6.0 min CN=68 Runoff=0.32 cfs 0.014 of Pond 6P: BIORETENTION 1 Peak Elev=415.12' Storage=15,593 cf Inflow=13.73 cfs 0.740 of Outflow=2.28 cfs 0.394 of Pond 8P: BIORETENTION 2 Peak EIev=432.01' Storage=5,734 cf Inflow=5.77 cfs 0.256 of Outflow=1.04 cfs 0.129 of Pond 10P: DRY POND Peak EIev=423.75' Storage=16,977 cf Inflow=17.96 cfs 0.799 of Outflow=1.33 cfs 0.761 of Link 13L: POST Combined Inflow=3.73 cfs 1.198 of Primary=3.73 cfs 1.198 of Total Runoff Area = 16.300 ac Runoff Volume = 1.709 of Average Runoff Depth = 1.26" 44.97% Pervious = 7.330 ac 55.03% Impervious = 8.970 ac 2021-05-27 Full Routing Prepared by Timmons Gro Type 1124-hr 1-YR Rainfall=3.05" Summary for Subcatchment 4S: Onsite To Bioretention 1 Runoff = 11.48 cfs @ 11.97 hrs, Volume= 0.510 af, Depth> 1.37" Printed 5/28/2021 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 2.680 98 Paved parking, HSG B 1.540 61 >75% Grass cover, Good, HSG B 0.260 60 Woods, Fair, HSG B 4.480 83 Weighted Average 1.800 40.18% Pervious Area 2.680 59.82% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 4S: Onsite To Bioretention 1 Hydrograph ' -1 - MMMMMMM 0OF LMM !Aoii vwolae6-4 Time (hours) ■ Rurwff 2021-05-27 Full Routing Prepared by Timmons Gro 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 0.01 9.25 0.47 0.00 0.02 9.50 0.50 0.00 0.03 9.75 0.52 0.01 0.04 10.00 0.55 0.01 0.06 10.25 0.58 0.01 0.09 10.50 0.62 0.02 0.12 10.75 0.67 0.03 0.16 11.00 0.72 0.04 0.22 11.25 0.78 0.06 0.32 11.50 0.86 0.08 0.48 11.75 1.18 0.21 2.79 12.00 2.02 0.71 11.03 12.25 2.15 0.80 1.63 12.50 2.24 0.87 1.07 12.75 2.30 0.91 0.79 13.00 2.35 0.95 0.67 13.25 2.40 0.98 0.58 13.50 2.44 1.01 0.51 13.75 2.47 1.03 0.45 14.00 2.50 1.06 0.40 14.25 2.53 1.08 0.37 14.50 2.55 1.10 0.36 14.75 2.58 1.12 0.34 15.00 2.60 1.13 0.32 15.25 2.63 1.15 0.31 15.50 2.65 1.17 0.29 15.75 2.67 1.18 0.27 16.00 2.68 1.20 0.25 16.25 2.70 1.21 0.24 16.50 2.72 1.22 0.24 16.75 2.73 1.24 0.23 17.00 2.75 1.25 0.22 17.25 2.77 1.26 0.22 17.50 2.78 1.27 0.21 17.75 2.80 1.28 0.20 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 18.00 2.81 1.29 0.20 18.25 2.82 1.31 0.19 18.50 2.84 1.32 0.18 18.75 2.85 1.33 0.18 19.00 2.86 1.33 0.17 19.25 2.87 1.34 0.17 19.50 2.88 1.35 0.16 19.75 2.89 1.36 0.15 20.00 2.90 1.37 0.15 Printed 5/28/2021 2021-05-27 Full Routing Prepared by Timmons Gro Type 1124-hr 1-YR Rainfall=3.05" Summary for Subcatchment 5S: Mite To Bioretention 1 Runoff = 2.30 cfs @ 11.98 hrs, Volume= 0.101 af, Depth> 0.80" Printed 5/28/2021 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 0.510 98 Paved parking, HSG B 0.000 61 >75% Grass cover, Good, HSG B 1.010 60 Woods, Fair, HSG B 1.520 73 Weighted Average 1.010 66.45% Pervious Area 0.510 33.55% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 5S: Mite To Bioretention 1 Hydrograph ■ Rurwff Type II 24-hr 1-YR Rainfall=3.05r� Runoff Area=1.520 ac Runoff Volume=0.101 of Runoff Depth>0.80" i.0 min CN=j73 12 13 14 15 16 17 18 19 20 Time (hours) 2021-05-27 Full Routing Prepared by Timmons Gro Type 1124-hr 1-YR 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 0.00 11.50 0.86 0.00 0.02 11.75 1.18 0.05 0.32 12.00 2.02 0.33 2.25 12.25 2.15 0.39 0.37 12.50 2.24 0.43 0.25 12.75 2.30 0.46 0.18 13.00 2.35 0.49 0.16 13.25 2.40 0.51 0.14 13.50 2.44 0.53 0.12 13.75 2.47 0.55 0.11 14.00 2.50 0.57 0.10 14.25 2.53 0.58 0.09 14.50 2.55 0.60 0.09 14.75 2.58 0.61 0.08 15.00 2.60 0.62 0.08 15.25 2.63 0.64 0.08 15.50 2.65 0.65 0.07 15.75 2.67 0.66 0.07 16.00 2.68 0.67 0.06 16.25 2.70 0.68 0.06 16.50 2.72 0.69 0.06 16.75 2.73 0.70 0.06 17.00 2.75 0.71 0.06 17.25 2.77 0.72 0.05 17.50 2.78 0.73 0.05 17.75 2.80 0.73 0.05 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 18.00 2.81 0.74 0.05 18.25 2.82 0.75 0.05 18.50 2.84 0.76 0.05 18.75 2.85 0.77 0.05 19.00 2.86 0.77 0.04 19.25 2.87 0.78 0.04 19.50 2.88 0.79 0.04 19.75 2.89 0.79 0.04 20.00 2.90 0.80 0.04 Printed 5/28/2021 2021-05-27 Full Routing Prepared by Timmons Gro Type 1124-hr 1-YR Rainfall=3.05" Summary for Subcatchment 7S: To Bioretention 2 Runoff = 5.77 cfs @ 11.97 hrs, Volume= 0.256 af, Depth> 1.30" Printed 5/28/2021 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 1.370 98 Paved parking, HSG B 0.950 61 >75% Grass cover, Good, HSG B 0.040 60 Woods, Fair, HSG B 2.360 82 Weighted Average 0.990 41.95% Pervious Area 1.370 58.05% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 7S: To Bioretention 2 Hydrograph ■ Runoff Time (hours) 2021-05-27 Full Routing Prepared by Timmons Gro 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 0.00 9.00 0.45 0.00 0.00 9.25 0.47 0.00 0.01 9.50 0.50 0.00 0.01 9.75 0.52 0.00 0.02 10.00 0.55 0.01 0.02 10.25 0.58 0.01 0.04 10.50 0.62 0.01 0.05 10.75 0.67 0.02 0.07 11.00 0.72 0.03 0.10 11.25 0.78 0.05 0.15 11.50 0.86 0.07 0.23 11.75 1.18 0.19 1.36 12.00 2.02 0.66 5.57 12.25 2.15 0.75 0.83 12.50 2.24 0.81 0.54 12.75 2.30 0.86 0.40 13.00 2.35 0.89 0.34 13.25 2.40 0.92 0.30 13.50 2.44 0.95 0.26 13.75 2.47 0.98 0.23 14.00 2.50 1.00 0.21 14.25 2.53 1.02 0.19 14.50 2.55 1.04 0.18 14.75 2.58 1.06 0.17 15.00 2.60 1.07 0.17 15.25 2.63 1.09 0.16 15.50 2.65 1.11 0.15 15.75 2.67 1.12 0.14 16.00 2.68 1.14 0.13 16.25 2.70 1.15 0.12 16.50 2.72 1.16 0.12 16.75 2.73 1.17 0.12 17.00 2.75 1.19 0.11 17.25 2.77 1.20 0.11 17.50 2.78 1.21 0.11 17.75 2.80 1.22 0.10 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 18.00 2.81 1.23 0.10 18.25 2.82 1.24 0.10 18.50 2.84 1.25 0.10 18.75 2.85 1.26 0.09 19.00 2.86 1.27 0.09 19.25 2.87 1.28 0.08 19.50 2.88 1.29 0.08 19.75 2.89 1.30 0.08 20.00 2.90 1.30 0.07 Printed 5/28/2021 2021-05-27 Full Routing Prepared by Timmons Gro Type 1124-hr 1-YR Rainfall=3.05" Summary for Subcatchment 9S: To Dry Pond 3 Runoff = 17.96 cfs @ 11.97 hrs, Volume= 0.799 af, Depth> 1.37" Printed 5/28/2021 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 4.240 98 Paved parking, HSG B 2.770 61 >75% Grass cover, Good, HSG B 0.000 60 Woods, Fair, HSG B 7.010 83 Weighted Average 2.770 39.51 % Pervious Area 4.240 60.49% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 9S: To Dry Pond 3 Hydrograph FA _M M_MMMMM _____ _MMM M_MMMMM ___MW''�'IMM ____ ® ___K"UMZ&iUM ______ �_�_�_�_�_�_■ �L►1:LJ111JC11'WJb�L�JC.I■ /______� Time (hours) ■ Runoff 2021-05-27 Full Routing Prepared by Timmons Gro Type 1124-hr 1-YR Rainfall=3.05" Hydrograph for Subcatchment 9S: To Dry Pond 3 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 5.00 0.19 0.00 0.00 5.25 0.20 0.00 0.00 5.50 0.22 0.00 0.00 5.75 0.23 0.00 0.00 6.00 0.24 0.00 0.00 6.25 0.26 0.00 0.00 6.50 0.27 0.00 0.00 6.75 0.29 0.00 0.00 7.00 0.30 0.00 0.00 7.25 0.32 0.00 0.00 7.50 0.33 0.00 0.00 7.75 0.35 0.00 0.00 8.00 0.37 0.00 0.00 8.25 0.38 0.00 0.00 8.50 0.40 0.00 0.00 8.75 0.42 0.00 0.00 9.00 0.45 0.00 0.02 9.25 0.47 0.00 0.04 9.50 0.50 0.00 0.05 9.75 0.52 0.01 0.07 10.00 0.55 0.01 0.10 10.25 0.58 0.01 0.13 10.50 0.62 0.02 0.18 10.75 0.67 0.03 0.25 11.00 0.72 0.04 0.34 11.25 0.78 0.06 0.50 11.50 0.86 0.08 0.75 11.75 1.18 0.21 4.37 12.00 2.02 0.71 17.26 12.25 2.15 0.80 2.55 12.50 2.24 0.87 1.67 12.75 2.30 0.91 1.24 13.00 2.35 0.95 1.04 13.25 2.40 0.98 0.90 13.50 2.44 1.01 0.80 13.75 2.47 1.03 0.71 14.00 2.50 1.06 0.63 14.25 2.53 1.08 0.59 14.50 2.55 1.10 0.56 14.75 2.58 1.12 0.53 15.00 2.60 1.13 0.51 15.25 2.63 1.15 0.48 15.50 2.65 1.17 0.45 15.75 2.67 1.18 0.42 16.00 2.68 1.20 0.40 16.25 2.70 1.21 0.38 16.50 2.72 1.22 0.37 16.75 2.73 1.24 0.36 17.00 2.75 1.25 0.35 17.25 2.77 1.26 0.34 17.50 2.78 1.27 0.33 17.75 2.80 1.28 0.32 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 18.00 2.81 1.29 0.31 18.25 2.82 1.31 0.30 18.50 2.84 1.32 0.29 18.75 2.85 1.33 0.28 19.00 2.86 1.33 0.27 19.25 2.87 1.34 0.26 19.50 2.88 1.35 0.25 19.75 2.89 1.36 0.24 20.00 2.90 1.37 0.23 Printed 5/28/2021 2021-05-27 Full Routing Prepared by Timmons Gro Type 1124-hr 1-YR Rainfall=3.05" Summary for Subcatchment 11S: Onsite Unrouted 4 Runoff = 0.61 cfs @ 11.99 hrs, Volume= 0.028 af, Depth> 0.54" Printed 5/28/2021 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 0.110 98 Paved parking, HSG B 0.380 61 >75% Grass cover, Good, HSG B 0.140 60 Woods, Fair, HSG B 0.630 67 Weighted Average 0.520 82.54% Pervious Area 0.110 17.46% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 11S: Onsite Unrouted 4 Hydrograph ■ Rurwff Time (hours) 2021-05-27 Full Routing Prepared by Timmons Gro Type 1124-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 0.02 12.00 2.02 0.18 0.61 12.25 2.15 0.22 0.11 12.50 2.24 0.26 0.08 12.75 2.30 0.28 0.06 13.00 2.35 0.30 0.05 13.25 2.40 0.32 0.04 13.50 2.44 0.33 0.04 13.75 2.47 0.34 0.03 14.00 2.50 0.36 0.03 14.25 2.53 0.37 0.03 14.50 2.55 0.38 0.03 14.75 2.58 0.39 0.03 15.00 2.60 0.40 0.03 15.25 2.63 0.41 0.02 15.50 2.65 0.42 0.02 15.75 2.67 0.43 0.02 16.00 2.68 0.44 0.02 16.25 2.70 0.44 0.02 16.50 2.72 0.45 0.02 16.75 2.73 0.46 0.02 17.00 2.75 0.47 0.02 17.25 2.77 0.47 0.02 17.50 2.78 0.48 0.02 17.75 2.80 0.49 0.02 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 18.00 2.81 0.49 0.02 18.25 2.82 0.50 0.02 18.50 2.84 0.51 0.02 18.75 2.85 0.51 0.01 19.00 2.86 0.52 0.01 19.25 2.87 0.52 0.01 19.50 2.88 0.53 0.01 19.75 2.89 0.53 0.01 20.00 2.90 0.54 0.01 Printed 5/28/2021 2021-05-27 Full Routing Prepared by Timmons Gro Type 1124-hr 1-YR Rainfall=3.05" Summary for Subcatchment 12S: Onsite Unrouted 5 Runoff = 0.32 cfs @ 11.99 hrs, Volume= 0.014 af, Depth> 0.58" Printed 5/28/2021 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 0.060 98 Paved parking, HSG B 0.200 61 >75% Grass cover, Good, HSG B 0.040 60 Woods, Fair, HSG B 0.300 68 Weighted Average 0.240 80.00% Pervious Area 0.060 20.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 12S: Onsite Unrouted 5 Hydrograph ■ Rurwff Time (hours) 2021-05-27 Full Routing Prepared by Timmons Gro Type 1124-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 0.01 0.02 12.00 2.02 0.20 0.31 12.25 2.15 0.25 0.06 12.50 2.24 0.28 0.04 12.75 2.30 0.31 0.03 13.00 2.35 0.33 0.02 13.25 2.40 0.34 0.02 13.50 2.44 0.36 0.02 13.75 2.47 0.38 0.02 14.00 2.50 0.39 0.02 14.25 2.53 0.40 0.01 14.50 2.55 0.41 0.01 14.75 2.58 0.42 0.01 15.00 2.60 0.43 0.01 15.25 2.63 0.44 0.01 15.50 2.65 0.45 0.01 15.75 2.67 0.46 0.01 16.00 2.68 0.47 0.01 16.25 2.70 0.48 0.01 16.50 2.72 0.49 0.01 16.75 2.73 0.49 0.01 17.00 2.75 0.50 0.01 17.25 2.77 0.51 0.01 17.50 2.78 0.52 0.01 17.75 2.80 0.52 0.01 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 18.00 2.81 0.53 0.01 18.25 2.82 0.54 0.01 18.50 2.84 0.54 0.01 18.75 2.85 0.55 0.01 19.00 2.86 0.56 0.01 19.25 2.87 0.56 0.01 19.50 2.88 0.57 0.01 19.75 2.89 0.57 0.01 20.00 2.90 0.58 0.01 Printed 5/28/2021 2021-05-27 Full Routing Prepared by Timmons Gro Type 1124-hr 1-YR Rainfall=3.05" Summary for Pond 6P: BIORETENTION 1 Printed 5/28/2021 Inflow Area = 8.360 ac, 54.55% Impervious, Inflow Depth > 1.06" for 1-YR event Inflow = 13.73 cfs @ 11.97 hrs, Volume= 0.740 of Outflow = 2.28 cfs @ 12.41 hrs, Volume= 0.394 af, Atten= 83%, Lag= 26.4 min Primary = 2.28 cfs @ 12.41 hrs, Volume= 0.394 of Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Peak Elev= 415.12' @ 12.41 hrs Surf.Area= 5,344 sf Storage= 15,593 cf Plug -Flow detention time= 178.5 min calculated for 0.394 of (53% of inflow) Center -of -Mass det. time= 87.0 min ( 894.5 - 807.6 ) Volume Invert Avail.Storage Storage Description #1 406.00' 32,374 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Voids Inc.Store Cum.Store (feet) (sq-ft) M (cubic -feet) (cubic -feet) 406.00 3,808 0.0 0 0 411.00 3,808 40.0 7,616 7,616 414.00 3,808 25.0 2,856 10,472 415.00 5,174 100.0 4,491 14,963 416.00 6,596 100.0 5,885 20,848 417.50 8,772 100.0 11,526 32,374 Device Routing Invert Outlet Devices #1 Primary 409.71' 36.0" Round HDPE_Round 36" L= 47.6' RCP, sq.cut end projecting, Ke= 0.500 Inlet / Outlet Invert= 409.71' / 409.00' S= 0.0149 '/' Cc= 0.900 n= 0.010 PVC, smooth interior, Flow Area= 7.07 sf #2 Device 1 415.00' 60.0" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #3 Primary 415.70' 95.0' long x 1.0' breadth Broad -Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 Coef. (English) 2.69 2.72 2.75 2.85 2.98 3.08 3.20 3.28 3.31 3.30 3.31 3.32 Primary OutFlow Max=2.11 cfs @ 12.41 hrs HW=415.12' (Free Discharge) 11=HDPE Round 36" (Passes 2.11 cfs of 67.29 cfs potential flow) t2=Orifice/Grate (Weir Controls 2.11 cfs @ 1.13 fps) 3=Broad-Crested Rectangular Weir ( Controls 0.00 cfs) 2021-05-27 Full Routing Prepared by Timmons Grc 417 416 415 414 1 413 c 412 0 410 409 408 407 Type ll 24-hr 1-YR Rainfall=3.05" Printed 5/28/2021 Pond 6P: BIORETENTION 1 Hydrograph Time (hours) Pond 6P: BIORETENTION 1 Stage -Discharge Broad -Crested Rectangular Weir Orifice/Grate H DPE Round 36" '.. 406-x / / / / / / / / 0 160 260 360 460 560 660 760 800 Discharge (ds) ■ Inflow ■ Primary ■ Pdmary 406-x / / / / / / / / 0 160 260 360 460 560 660 760 800 Discharge (ds) ■ Inflow ■ Primary ■ Pdmary 2021-05-27 Full Routing Prepared by Timmons Grc j4 �4 W Type ll 24-hr 1-YR Rainfall=3.05" Printed 5/28/2021 Pond 6P: BIORETENTION 1 Stage -Area -Storage Surface/Horizontal/Wetted Area (sq-ft) !1 9nn 4 M 4 KAA 7 nnn 7 G A- nnn O C AMA A C1111 G M G C1111 O nnn O G A 7 nnn 7 =nn O nnn Q =nn r, 1■I■1■L■I■I■I■11 .� '.,.,,I� 1 V 1.1■'.L.,.L'.L1I r r. Custom Stage r. 0 2,000 4,000 5,000 8,00010,00012,00014,00016,00018,00020,00022,00024,00026,00028,00030,00032,000 Storage (cubic -feet) ■ Surface ■ Storage 2021-05-27 Full Routing Prepared by Timmons Gro 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 0 406.00 0.00 5.50 0.00 0 406.00 0.00 6.00 0.00 0 406.00 0.00 6.50 0.00 0 406.00 0.00 7.00 0.00 0 406.00 0.00 7.50 0.00 0 406.00 0.00 8.00 0.00 0 406.00 0.00 8.50 0.00 0 406.00 0.00 9.00 0.01 7 406.00 0.00 9.50 0.03 47 406.03 0.00 10.00 0.06 129 406.08 0.00 10.50 0.12 285 406.19 0.00 11.00 0.22 576 406.38 0.00 11.50 0.50 1,182 406.78 0.00 12.00 13.28 9,946 413.45 0.00 12.50 1.91 15,557 415.11 2.08 13.00 1.18 15,398 415.08 1.24 13.50 0.90 15,295 415.06 0.95 14.00 0.72 15,225 415.05 0.75 14.50 0.63 15,188 415.04 0.64 15.00 0.57 15,167 415.04 0.58 15.50 0.51 15,145 415.03 0.52 16.00 0.45 15,124 415.03 0.46 16.50 0.42 15,110 415.03 0.42 17.00 0.39 15,103 415.03 0.40 17.50 0.37 15,095 415.03 0.38 18.00 0.35 15,087 415.02 0.35 18.50 0.33 15,079 415.02 0.33 19.00 0.30 15,071 415.02 0.31 19.50 0.28 15,063 415.02 0.29 20.00 0.26 15,055 415.02 0.26 Printed 5/28/2021 2021-05-27 Full Routing Prepared by Timmons Gro Elevation Primary (feet) (cfs) 406.00 0.00 406.06 0.00 406.12 0.00 406.18 0.00 406.24 0.00 406.30 0.00 406.36 0.00 406.42 0.00 406.48 0.00 406.54 0.00 406.60 0.00 406.66 0.00 406.72 0.00 406.78 0.00 406.84 0.00 406.90 0.00 406.96 0.00 407.02 0.00 407.08 0.00 407.14 0.00 407.20 0.00 407.26 0.00 407.32 0.00 407.38 0.00 407.44 0.00 407.50 0.00 407.56 0.00 407.62 0.00 407.68 0.00 407.74 0.00 407.80 0.00 407.86 0.00 407.92 0.00 407.98 0.00 408.04 0.00 408.10 0.00 408.16 0.00 408.22 0.00 408.28 0.00 408.34 0.00 408.40 0.00 408.46 0.00 408.52 0.00 408.58 0.00 408.64 0.00 408.70 0.00 408.76 0.00 408.82 0.00 408.88 0.00 408.94 0.00 409.00 0.00 409.06 0.00 Type 1124-hr 1-YR Rainfall=3.05" Stage -Discharge for Pond 6P: BIORETENTION 1 Elevation Primary (feet) (cfs) 409.12 0.00 409.18 0.00 409.24 0.00 409.30 0.00 409.36 0.00 409.42 0.00 409.48 0.00 409.54 0.00 409.60 0.00 409.66 0.00 409.72 0.00 409.78 0.00 409.84 0.00 409.90 0.00 409.96 0.00 410.02 0.00 410.08 0.00 410.14 0.00 410.20 0.00 410.26 0.00 410.32 0.00 410.38 0.00 410.44 0.00 410.50 0.00 410.56 0.00 410.62 0.00 410.68 0.00 410.74 0.00 410.80 0.00 410.86 0.00 410.92 0.00 410.98 0.00 411.04 0.00 411.10 0.00 411.16 0.00 411.22 0.00 411.28 0.00 411.34 0.00 411.40 0.00 411.46 0.00 411.52 0.00 411.58 0.00 411.64 0.00 411.70 0.00 411.76 0.00 411.82 0.00 411.88 0.00 411.94 0.00 412.00 0.00 412.06 0.00 412.12 0.00 412.18 0.00 Elevation Primary (feet) (cfs) 412.24 0.00 412.30 0.00 412.36 0.00 412.42 0.00 412.48 0.00 412.54 0.00 412.60 0.00 412.66 0.00 412.72 0.00 412.78 0.00 412.84 0.00 412.90 0.00 412.96 0.00 413.02 0.00 413.08 0.00 413.14 0.00 413.20 0.00 413.26 0.00 413.32 0.00 413.38 0.00 413.44 0.00 413.50 0.00 413.56 0.00 413.62 0.00 413.68 0.00 413.74 0.00 413.80 0.00 413.86 0.00 413.92 0.00 413.98 0.00 414.04 0.00 414.10 0.00 414.16 0.00 414.22 0.00 414.28 0.00 414.34 0.00 414.40 0.00 414.46 0.00 414.52 0.00 414.58 0.00 414.64 0.00 414.70 0.00 414.76 0.00 414.82 0.00 414.88 0.00 414.94 0.00 415.00 0.00 415.06 0.75 415.12 2.14 415.18 3.92 415.24 6.04 415.30 8.44 Printed 5/28/2021 Elevation Primary (feet) (cfs) 415.36 11.09 415.42 13.98 415.48 17.08 415.54 20.38 415.60 23.87 415.66 27.54 415.72 32.10 415.78 41.17 415.84 52.93 415.90 66.71 415.96 82.31 416.02 99.48 416.08 118.11 416.14 138.10 416.20 159.38 416.26 181.89 416.32 204.94 416.38 226.01 416.44 248.37 416.50 272.01 416.56 297.61 416.62 324.62 416.68 353.05 416.74 382.31 416.80 412.56 416.86 444.09 416.92 477.15 416.98 512.09 417.04 548.43 417.10 586.18 417.16 623.34 417.22 661.67 417.28 701.19 417.34 739.89 417.40 778.51 417.46 817.97 2021-05-27 Full Routing Prepared by Timmons Gro Type 1124-hr 1-YR Rainfall=3.05" Stage -Area -Storage for Pond 6P: BIORETENTION 1 Elevation Surface Storage (feet) (sq-ft) (cubic -feet) 406.00 3,808 0 406.15 3,808 228 406.30 3,808 457 406.45 3,808 685 406.60 3,808 914 406.75 3,808 1,142 406.90 3,808 1,371 407.05 3,808 1,599 407.20 3,808 1,828 407.35 3,808 2,056 407.50 3,808 2,285 407.65 3,808 2,513 407.80 3,808 2,742 407.95 3,808 2,970 408.10 3,808 3,199 408.25 3,808 3,427 408.40 3,808 3,656 408.55 3,808 3,884 408.70 3,808 4,113 408.85 3,808 4,341 409.00 3,808 4,570 409.15 3,808 4,798 409.30 3,808 5,027 409.45 3,808 5,255 409.60 3,808 5,484 409.75 3,808 5,712 409.90 3,808 5,940 410.05 3,808 6,169 410.20 3,808 6,397 410.35 3,808 6,626 410.50 3,808 6,854 410.65 3,808 7,083 410.80 3,808 7,311 410.95 3,808 7,540 411.10 3,808 7,711 411.25 3,808 7,854 411.40 3,808 7,997 411.55 3,808 8,140 411.70 3,808 8,282 411.85 3,808 8,425 412.00 3,808 8,568 412.15 3,808 8,711 412.30 3,808 8,854 412.45 3,808 8,996 412.60 3,808 9,139 412.75 3,808 9,282 412.90 3,808 9,425 413.05 3,808 9,568 413.20 3,808 9,710 413.35 3,808 9,853 413.50 3,808 9,996 413.65 3,808 10,139 Elevation Surface Storage (feet) (sq-ft) (cubic -feet) 413.80 3,808 10,282 413.95 3,808 10,424 414.10 3,945 10,860 414.25 4,150 11,467 414.40 4,354 12,104 414.55 4,559 12,773 414.70 4,764 13,472 414.85 4,969 14,202 415.00 5,174 14,963 415.15 5,387 15,755 415.30 5,601 16,579 415.45 5,814 17,435 415.60 6,027 18,323 415.75 6,241 19,243 415.90 6,454 20,196 416.05 6,669 21,180 416.20 6,886 22,196 416.35 7,104 23,245 416.50 7,321 24,327 416.65 7,539 25,442 416.80 7,757 26,589 416.95 7,974 27,769 417.10 8,192 28,981 417.25 8,409 30,226 417.40 8,627 31,504 Printed 5/28/2021 2021-05-27 Full Routing Prepared by Timmons Gro Type 1124-hr 1-YR Rainfall=3.05" Summary for Pond 8P: BIORETENTION 2 Printed 5/28/2021 Inflow Area = 2.360 ac, 58.05% Impervious, Inflow Depth > 1.30" for 1-YR event Inflow = 5.77 cfs @ 11.97 hrs, Volume= 0.256 of Outflow = 1.04 cfs @ 12.19 hrs, Volume= 0.129 af, Atten= 82%, Lag= 13.0 min Primary = 1.04 cfs @ 12.19 hrs, Volume= 0.129 of Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Peak Elev= 432.01' @ 12.19 hrs Surf.Area= 2,045 sf Storage= 5,734 cf Plug -Flow detention time= 166.0 min calculated for 0.129 of (50% of inflow) Center -of -Mass det. time= 84.0 min ( 875.8 - 791.8 ) Volume Invert Avail.Storage Storage Description #1 423.91' 10,323 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Voids Inc.Store Cum.Store (feet) (sq-ft) M (cubic -feet) (cubic -feet) 423.91 1,587 0.0 0 0 427.91 1,587 40.0 2,539 2,539 430.91 1,587 25.0 1,190 3,729 431.00 1,627 100.0 145 3,874 432.00 2,041 100.0 1,834 5,708 433.00 2,350 100.0 2,196 7,904 434.00 2,489 100.0 2,420 10,323 Device Routino Invert Outlet Devices #1 Primary 424.43' 18.0" Round HDPE_Round 18" L= 61.4' RCP, sq.cut end projecting, Ke= 0.500 Inlet / Outlet Invert= 424.43' / 423.82' S= 0.0099 '/' Cc= 0.900 n= 0.010 PVC, smooth interior, Flow Area= 1.77 sf #2 Device 1 431.91' 36.0" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads Primary OutFlow Max=1.00 cfs @ 12.19 hrs HW=432.01' (Free Discharge) L1=HDPE_Round 18" (Passes 1.00 cfs of 22.24 cfs potential flow) t2=Orifice/Grate (Weir Controls 1.00 cfs @ 1.04 fps) 2021-05-27 Full Routing Prepared by Timmons Grc 0 LL i c m m W Type ll 24-hr 1-YR Rainfall=3.05" Printed 5/28/2021 Pond 8P: BIORETENTION Hydrograph MM MMM® MMIMMMI MOMMENIMMOMMMEN IMMOMMINMEMEMEN son I r Pond 813: BIORETENTION 2 Stage -Discharge 43a 433 _.. _.. Orifice/Grate - - 432 431 430- 429- .. ...... 428 ,_ ........_.. 427 426 425 HD 424 0 2 4 6 8 10 12 14 16 18 20 22 24 Discharge (ds) ■ Inflow ■ Primary ❑ Primary 2021-05-27 Full Routing Prepared by Timmons Grc Pond 8P: BIORETENTION 2 Stage -Area -Storage Storage (cubic -feet) Type ll 24-hr 1-YR Rainfall=3.05" Printed 5/28/2021 ■ Surface ■ Storage 2021-05-27 Full Routing Prepared by Timmons Gro Type 1124-hr 1-YR 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 0 423.91 0.00 9.00 0.00 0 423.91 0.00 9.50 0.01 9 423.92 0.00 10.00 0.02 39 423.97 0.00 10.50 0.05 104 424.07 0.00 11.00 0.10 233 424.28 0.00 11.50 0.23 509 424.71 0.00 12.00 5.57 4,250 431.22 0.00 12.50 0.54 5,671 431.98 0.59 13.00 0.34 5,613 431.95 0.36 13.50 0.26 5,592 431.94 0.27 14.00 0.21 5,578 431.94 0.21 14.50 0.18 5,571 431.93 0.19 15.00 0.17 5,567 431.93 0.17 15.50 0.15 5,563 431.93 0.15 16.00 0.13 5,558 431.93 0.13 16.50 0.12 5,556 431.92 0.12 17.00 0.11 5,554 431.92 0.12 17.50 0.11 5,553 431.92 0.11 18.00 0.10 5,551 431.92 0.10 18.50 0.10 5,549 431.92 0.10 19.00 0.09 5,548 431.92 0.09 19.50 0.08 5,546 431.92 0.08 20.00 0.07 5,545 431.92 0.08 Printed 5/28/2021 2021-05-27 Full Routing Prepared by Timmons Gro Elevation Primary (feet) (cfs) 423.91 0.00 423.97 0.00 424.03 0.00 424.09 0.00 424.15 0.00 424.21 0.00 424.27 0.00 424.33 0.00 424.39 0.00 424.45 0.00 424.51 0.00 424.57 0.00 424.63 0.00 424.69 0.00 424.75 0.00 424.81 0.00 424.87 0.00 424.93 0.00 424.99 0.00 425.05 0.00 425.11 0.00 425.17 0.00 425.23 0.00 425.29 0.00 425.35 0.00 425.41 0.00 425.47 0.00 425.53 0.00 425.59 0.00 425.65 0.00 425.71 0.00 425.77 0.00 425.83 0.00 425.89 0.00 425.95 0.00 426.01 0.00 426.07 0.00 426.13 0.00 426.19 0.00 426.25 0.00 426.31 0.00 426.37 0.00 426.43 0.00 426.49 0.00 426.55 0.00 426.61 0.00 426.67 0.00 426.73 0.00 426.79 0.00 426.85 0.00 426.91 0.00 426.97 0.00 Type ll 24-hr 1-YR Rainfall=3.05" Stage -Discharge for Pond 8P: BIORETENTION 2 Elevation Primary (feet) (cfs) 427.03 0.00 427.09 0.00 427.15 0.00 427.21 0.00 427.27 0.00 427.33 0.00 427.39 0.00 427.45 0.00 427.51 0.00 427.57 0.00 427.63 0.00 427.69 0.00 427.75 0.00 427.81 0.00 427.87 0.00 427.93 0.00 427.99 0.00 428.05 0.00 428.11 0.00 428.17 0.00 428.23 0.00 428.29 0.00 428.35 0.00 428.41 0.00 428.47 0.00 428.53 0.00 428.59 0.00 428.65 0.00 428.71 0.00 428.77 0.00 428.83 0.00 428.89 0.00 428.95 0.00 429.01 0.00 429.07 0.00 429.13 0.00 429.19 0.00 429.25 0.00 429.31 0.00 429.37 0.00 429.43 0.00 429.49 0.00 429.55 0.00 429.61 0.00 429.67 0.00 429.73 0.00 429.79 0.00 429.85 0.00 429.91 0.00 429.97 0.00 430.03 0.00 430.09 0.00 Elevation Primary (feet) (cfs) 430.15 0.00 430.21 0.00 430.27 0.00 430.33 0.00 430.39 0.00 430.45 0.00 430.51 0.00 430.57 0.00 430.63 0.00 430.69 0.00 430.75 0.00 430.81 0.00 430.87 0.00 430.93 0.00 430.99 0.00 431.05 0.00 431.11 0.00 431.17 0.00 431.23 0.00 431.29 0.00 431.35 0.00 431.41 0.00 431.47 0.00 431.53 0.00 431.59 0.00 431.65 0.00 431.71 0.00 431.77 0.00 431.83 0.00 431.89 0.00 431.95 0.25 432.01 0.97 432.07 1.97 432.13 3.18 432.19 4.57 432.25 6.11 432.31 7.80 432.37 9.62 432.43 11.56 432.49 13.61 432.55 15.78 432.61 18.05 432.67 20.42 432.73 22.88 432.79 23.47 432.85 23.56 432.91 23.66 432.97 23.75 433.03 23.84 433.09 23.93 433.15 24.02 433.21 24.11 Printed 5/28/2021 Elevation Primary (feet) (cfs) 433.27 24.20 433.33 24.29 433.39 24.38 433.45 24.47 433.51 24.56 433.57 24.65 433.63 24.73 433.69 24.82 433.75 24.91 433.81 25.00 433.87 25.08 433.93 25.17 433.99 25.26 2021-05-27 Full Routing Prepared by Timmons Gro Type 1124-hr 1-YR 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 5/28/2021 2021-05-27 Full Routing Prepared by Timmons Gro Type 1124-hr 1-YR Rainfall=3.05" Summary for Pond 10P: DRY POND Printed 5/28/2021 Inflow Area = 7.010 ac, 60.49% Impervious, Inflow Depth > 1.37" for 1-YR event Inflow = 17.96 cfs @ 11.97 hrs, Volume= 0.799 of Outflow = 1.33 cfs @ 12.65 hrs, Volume= 0.761 af, Atten= 93%, Lag= 40.7 min Primary = 1.33 cfs @ 12.65 hrs, Volume= 0.761 of Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Peak Elev= 423.75' @ 12.65 hrs Surf.Area= 5,290 sf Storage= 16,977 cf Plug -Flow detention time= 144.0 min calculated for 0.761 of (95% of inflow) Center -of -Mass det. time= 126.3 min ( 915.5 - 789.3 ) Volume Invert Avail.Storage Storage Description #1 418.00' 33,448 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic -feet) (cubic -feet) 418.00 1,082 0 0 419.00 1,611 1,347 1,347 420.00 2,218 1,915 3,261 421.00 2,905 2,562 5,823 422.00 3,711 3,308 9,131 423.00 4,590 4,151 13,281 424.00 5,526 5,058 18,339 424.10 5,622 557 18,896 425.00 5,935 5,201 24,097 426.00 6,368 6,152 30,249 426.50 6,431 3,200 33,448 Device Routing Invert Outlet Devices #1 Primary 417.90' 24.0" Round Culvert L= 117.9' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 417.90' / 417.01' S= 0.0075 '/' Cc= 0.900 n= 0.010 PVC, smooth interior, Flow Area= 3.14 sf #2 Device 1 418.00' 4.0" W x 4.2" H Vert. Orifice/Grate C= 0.600 #3 Device 1 423.92' 60.0" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #4 Primary 424.99' 45.0' long x 5.0' breadth Broad -Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 Primary OutFlow Max=1.33 cfs @ 12.65 hrs HW=423.75' (Free Discharge) 1_Cu lvert (Passes 1.33 cfs of 33.31 cfs potential flow) �2=Orifice/Grate (Orifice Controls 1.33 cfs @ 11.37 fps) 3=Orifice/Grate ( Controls 0.00 cfs) =Broad -Crested Rectangular Weir ( Controls 0.00 cfs) 2021-05-27 Full Routing Prepared by Timmons Grc 42 42 42 42 c 0 m 42 W 42 42 41 41 0 Type I/ 24-hr 1-YR Rainfall=3.05- Printed 5/28/2021 C Paae 31 Pond 10P: DRY POND Hydrograph Time (hours) Pond 10P: DRY POND Stage -Discharge 8 LU 4U UU aU lUU l[U 14U 1w laU LUU LLU 24U L(jU Discharge ids) ■ Irrflow ■ Primary 0 Primary 2021-05-27 Full Routing Prepared by Timmons Grc 42 42 42 j 42 c m 42 W 42 42 41 41 0 Type l/ 24-hr 1-YR Rainfall=3.05- Printed 5/28/2021 Pond 10P: DRY POND Stage -Area -Storage Surface/Horizontal/Wetted Area (sq-ft) n Mn 1 nnn 1 5nn 9 nnn 2 5nn s nnn a 5nn 4 nnn 4 5nn 5 nnn 5 5nn a nnn ENINEINNINEP ■■I��I■■IP-M/ NINE r III■/..I■I■■1■■1■■ Custom Stage Data Z—A 5,000 10,000 15,000 20,000 25,000 30,000 Storage (cubic -feet) ■ Surface ■ Storage 2021-05-27 Full Routing Prepared by Timmons Gro Type 1124-hr 1-YR Rainfall=3.05" Hydrograph for Pond 10P: DRY POND Time Inflow Storage Elevation Primary (hours) (cfs) (cubic -feet) (feet) (cfs) 5.00 0.00 0 418.00 0.00 5.50 0.00 0 418.00 0.00 6.00 0.00 0 418.00 0.00 6.50 0.00 0 418.00 0.00 7.00 0.00 0 418.00 0.00 7.50 0.00 0 418.00 0.00 8.00 0.00 0 418.00 0.00 8.50 0.00 0 418.00 0.00 9.00 0.02 10 418.01 0.00 9.50 0.05 57 418.05 0.02 10.00 0.10 134 418.12 0.05 10.50 0.18 245 418.21 0.11 11.00 0.34 414 418.35 0.22 11.50 0.75 809 418.65 0.38 12.00 17.26 11,382 422.57 1.18 12.50 1.67 16,903 423.73 1.32 13.00 1.04 16,794 423.71 1.32 13.50 0.80 16,062 423.57 1.30 14.00 0.63 15,013 423.36 1.28 14.50 0.56 13,797 423.11 1.25 15.00 0.51 12,541 422.84 1.21 15.50 0.45 11,255 422.54 1.17 16.00 0.40 9,944 422.21 1.13 16.50 0.37 8,639 421.87 1.08 17.00 0.35 7,391 421.50 1.02 17.50 0.33 6,210 421.13 0.97 18.00 0.31 5,105 420.75 0.90 18.50 0.29 4,086 420.35 0.83 19.00 0.27 3,167 419.96 0.75 19.50 0.25 2,360 419.57 0.66 20.00 0.23 1,679 419.20 0.57 Printed 5/28/2021 2021-05-27 Full Routing Prepared by Timmons Gro Elevation Primary (feet) (cfs) 418.00 0.00 418.10 0.03 418.20 0.10 418.30 0.18 418.40 0.26 418.50 0.32 418.60 0.36 418.70 0.41 418.80 0.44 418.90 0.48 419.00 0.51 419.10 0.54 419.20 0.57 419.30 0.60 419.40 0.62 419.50 0.65 419.60 0.67 419.70 0.69 419.80 0.72 419.90 0.74 420.00 0.76 420.10 0.78 420.20 0.80 420.30 0.82 420.40 0.84 420.50 0.86 420.60 0.87 420.70 0.89 420.80 0.91 420.90 0.93 421.00 0.94 421.10 0.96 421.20 0.98 421.30 0.99 421.40 1.01 421.50 1.02 421.60 1.04 421.70 1.05 421.80 1.07 421.90 1.08 422.00 1.10 422.10 1.11 422.20 1.13 422.30 1.14 422.40 1.15 422.50 1.17 422.60 1.18 422.70 1.19 422.80 1.21 422.90 1.22 423.00 1.23 423.10 1.25 Type 1124-hr 1-YR Rainfall=3.05" Stage -Discharge for Pond 10P: DRY POND Elevation Primary (feet) (cfs) 423.20 1.26 423.30 1.27 423.40 1.28 423.50 1.30 423.60 1.31 423.70 1.32 423.80 1.33 423.90 1.34 424.00 2.52 424.10 5.29 424.20 8.99 424.30 13.42 424.40 18.48 424.50 24.10 424.60 30.23 424.70 36.43 424.80 36.74 424.90 37.05 425.00 37.47 425.10 41.51 425.20 48.14 425.30 57.13 425.40 68.22 425.50 81.64 425.60 97.02 425.70 111.84 425.80 127.65 425.90 144.71 426.00 162.67 426.10 181.05 426.20 200.16 426.30 220.25 426.40 241.08 426.50 262.97 Printed 5/28/2021 2021-05-27 Full Routing Prepared by Timmons Gro Type 1124-hr 1-YR Rainfall=3.05" Stage -Area -Storage for Pond 10P: DRY POND Elevation Surface Storage (feet) (sq-ft) (cubic -feet) 418.00 1,082 0 418.10 1,135 ill 418.20 1,188 227 418.30 1,241 348 418.40 1,294 475 418.50 1,347 607 418.60 1,399 744 418.70 1,452 887 418.80 1,505 1,035 418.90 1,558 1,188 419.00 1,611 1,347 419.10 1,672 1,511 419.20 1,732 1,681 419.30 1,793 1,857 419.40 1,854 2,039 419.50 1,915 2,228 419.60 1,975 2,422 419.70 2,036 2,623 419.80 2,097 2,830 419.90 2,157 3,042 420.00 2,218 3,261 420.10 2,287 3,486 420.20 2,355 3,718 420.30 2,424 3,957 420.40 2,493 4,203 420.50 2,562 4,456 420.60 2,630 4,715 420.70 2,699 4,982 420.80 2,768 5,255 420.90 2,836 5,535 421.00 2,905 5,823 421.10 2,986 6,117 421.20 3,066 6,420 421.30 3,147 6,730 421.40 3,227 7,049 421.50 3,308 7,376 421.60 3,389 7,711 421.70 3,469 8,053 421.80 3,550 8,404 421.90 3,630 8,763 422.00 3,711 9,131 422.10 3,799 9,506 422.20 3,887 9,890 422.30 3,975 10,283 422.40 4,063 10,685 422.50 4,151 11,096 422.60 4,238 11,515 422.70 4,326 11,944 422.80 4,414 12,381 422.90 4,502 12,826 423.00 4,590 13,281 423.10 4,684 13,745 Elevation Surface Storage (feet) (sq-ft) (cubic -feet) 423.20 4,777 14,218 423.30 4,871 14,700 423.40 4,964 15,192 423.50 5,058 15,693 423.60 5,152 16,203 423.70 5,245 16,723 423.80 5,339 17,253 423.90 5,432 17,791 424.00 5,526 18,339 424.10 5,622 18,896 424.20 5,657 19,460 424.30 5,692 20,028 424.40 5,726 20,599 424.50 5,761 21,173 424.60 5,796 21,751 424.70 5,831 22,332 424.80 5,865 22,917 424.90 5,900 23,505 425.00 5,935 24,097 425.10 5,978 24,693 425.20 6,022 25,293 425.30 6,065 25,897 425.40 6,108 26,506 425.50 6,152 27,119 425.60 6,195 27,736 425.70 6,238 28,358 425.80 6,281 28,984 425.90 6,325 29,614 426.00 6,368 30,249 426.10 6,381 30,886 426.20 6,393 31,525 426.30 6,406 32,165 426.40 6,418 32,806 426.50 6,431 33,448 Printed 5/28/2021 2021-05-27 Full Routing Prepared by Timmons Gro Type 1124-hr 1-YR Rainfall=3.05" Printed 5/28/2021 Summary for Link 13L: POST Combined Inflow Area = 16.300 ac, 55.03% Impervious, Inflow Depth > 0.88" for 1-YR event Inflow = 3.73 cfs @ 12.41 hrs, Volume= 1.198 of Primary = 3.73 cfs @ 12.41 hrs, Volume= 1.198 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Link 13L: POST Combined Hydrograph ■ Inflow ■ Primary Time (houm) 2021-05-27 Full Routing Prepared by Timmons Gro Type 1124-hr 1-YR Rainfall=3.05" Hydrograph for Link 13L: POST Combined Time Inflow Elevation Primary (hours) (cfs) (feet) (cfs) 5.00 0.00 0.00 0.00 5.25 0.00 0.00 0.00 5.50 0.00 0.00 0.00 5.75 0.00 0.00 0.00 6.00 0.00 0.00 0.00 6.25 0.00 0.00 0.00 6.50 0.00 0.00 0.00 6.75 0.00 0.00 0.00 7.00 0.00 0.00 0.00 7.25 0.00 0.00 0.00 7.50 0.00 0.00 0.00 7.75 0.00 0.00 0.00 8.00 0.00 0.00 0.00 8.25 0.00 0.00 0.00 8.50 0.00 0.00 0.00 8.75 0.00 0.00 0.00 9.00 0.00 0.00 0.00 9.25 0.01 0.00 0.01 9.50 0.02 0.00 0.02 9.75 0.03 0.00 0.03 10.00 0.05 0.00 0.05 10.25 0.07 0.00 0.07 10.50 0.11 0.00 0.11 10.75 0.16 0.00 0.16 11.00 0.22 0.00 0.22 11.25 0.29 0.00 0.29 11.50 0.38 0.00 0.38 11.75 0.67 0.00 0.67 12.00 2.10 0.00 2.10 12.25 1.64 0.00 1.64 12.50 3.51 0.00 3.51 12.75 2.88 0.00 2.88 13.00 2.64 0.00 2.64 13.25 2.45 0.00 2.45 13.50 2.31 0.00 2.31 13.75 2.18 0.00 2.18 14.00 2.08 0.00 2.08 14.25 1.99 0.00 1.99 14.50 1.93 0.00 1.93 14.75 1.88 0.00 1.88 15.00 1.83 0.00 1.83 15.25 1.78 0.00 1.78 15.50 1.73 0.00 1.73 15.75 1.68 0.00 1.68 16.00 1.62 0.00 1.62 16.25 1.57 0.00 1.57 16.50 1.53 0.00 1.53 16.75 1.49 0.00 1.49 17.00 1.45 0.00 1.45 17.25 1.41 0.00 1.41 17.50 1.37 0.00 1.37 17.75 1.33 0.00 1.33 Time Inflow Elevation Primary (hours) (cfs) (feet) (cfs) 18.00 1.28 0.00 1.28 18.25 1.23 0.00 1.23 18.50 1.18 0.00 1.18 18.75 1.13 0.00 1.13 19.00 1.08 0.00 1.08 19.25 1.03 0.00 1.03 19.50 0.97 0.00 0.97 19.75 0.91 0.00 0.91 20.00 0.85 0.00 0.85 Printed 5/28/2021 2021-05-27 Full Routing Prepared by Timmons Gro Type/1 24-hr 10-YR Rainfall=5.58" Printed 5/28/2021 Time span=5.00-20.00 hrs, dt=0.05 hrs, 301 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment 4S: Onsite To Bioretention 1 Runoff Area=4.480 ac 59.82% Impervious Runoff Depth>3.45" Tc=6.0 min CN=83 Runoff=27.80 cfs 1.289 of Subcatchment 5S: Offsite To Bioretention 1 Runoff Area=1.520 ac 33.55% Impervious Runoff Depth>2.52" Tc=6.0 min CN=73 Runoff=7.18 cfs 0.320 of Subcatchment 7S: To Bioretention 2 Runoff Area=2.360 ac 58.05% Impervious Runoff Depth>3.36" Tc=6.0 min CN=82 Runoff=14.31 cfs 0.660 of Subcatchment 9S: To Dry Pond 3 Runoff Area=7.010 ac 60.49% Impervious Runoff Depth>3.45" Tc=6.0 min CN=83 Runoff=43.50 cfs 2.017 of Subcatchment 11S: Onsite Unrouted 4 Runoff Area=0.630 ac 17.46% Impervious Runoff Depth>2.02" Tc=6.0 min CN=67 Runoff=2.43 cfs 0.106 of Subcatchment 12S: Onsite Unrouted 5 Runoff Area=0.300 ac 20.00% Impervious Runoff Depth>2.10" Tc=6.0 min CN=68 Runoff=1.20 cfs 0.053 of Pond 6P: BIORETENTION 1 Peak Elev=415.82' Storage=19,664 cf Inflow=48.60 cfs 2.141 of Outflow=48.74 cfs 1.793 of Pond 8P: BIORETENTION 2 Peak EIev=432.50' Storage=6,776 cf Inflow=14.31 cfs 0.660 of Outflow=14.11 cfs 0.532 of Pond 10P: DRY POND Peak EIev=424.87' Storage=23,332 cf Inflow=43.50 cfs 2.017 of Outflow=37.11 cfs 1.829 of Link 13L: POST Combined Inflow=88.93 cfs 3.781 of Primary=88.93 cfs 3.781 of Total Runoff Area = 16.300 ac Runoff Volume = 4.445 of Average Runoff Depth = 3.27" 44.97% Pervious = 7.330 ac 55.03% Impervious = 8.970 ac 2021-05-27 Full Routing Prepared by Timmons Gro Type/1 24-hr 10-YR Rainfall=5.58" Summary for Subcatchment 4S: Onsite To Bioretention 1 Runoff = 27.80 cfs @ 11.97 hrs, Volume= 1.289 af, Depth> 3.45" Printed 5/28/2021 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 2.680 98 Paved parking, HSG B 1.540 61 >75% Grass cover, Good, HSG B 0.260 60 Woods, Fair, HSG B 4.480 83 Weighted Average 1.800 40.18% Pervious Area 2.680 59.82% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 4S: Onsite To Bioretention 1 Hydrograph ■ Rurwff Time (hours) 2021-05-27 Full Routing Prepared by Timmons Gro Type/1 24-hr 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 0.01 6.25 0.47 0.00 0.02 6.50 0.50 0.00 0.03 6.75 0.52 0.01 0.05 7.00 0.55 0.01 0.06 7.25 0.58 0.01 0.07 7.50 0.61 0.02 0.08 7.75 0.64 0.02 0.10 8.00 0.67 0.03 0.11 8.25 0.70 0.04 0.13 8.50 0.74 0.05 0.16 8.75 0.78 0.06 0.20 9.00 0.82 0.07 0.23 9.25 0.86 0.08 0.26 9.50 0.91 0.10 0.28 9.75 0.96 0.12 0.32 10.00 1.01 0.14 0.38 10.25 1.07 0.16 0.46 10.50 1.14 0.19 0.56 10.75 1.22 0.23 0.70 11.00 1.31 0.28 0.87 11.25 1.43 0.34 1.19 11.50 1.58 0.43 1.62 11.75 2.16 0.81 8.22 12.00 3.70 2.03 26.20 12.25 3.94 2.23 3.66 12.50 4.10 2.37 2.37 12.75 4.21 2.47 1.74 13.00 4.31 2.56 1.46 13.25 4.39 2.63 1.26 13.50 4.46 2.69 1.11 13.75 4.52 2.74 0.98 14.00 4.58 2.79 0.87 14.25 4.63 2.84 0.81 14.50 4.67 2.88 0.77 14.75 4.72 2.92 0.73 15.00 4.76 2.96 0.69 15.25 4.80 3.00 0.65 15.50 4.84 3.03 0.62 15.75 4.88 3.06 0.58 16.00 4.91 3.09 0.54 16.25 4.94 3.12 0.51 16.50 4.97 3.15 0.50 16.75 5.00 3.18 0.49 17.00 5.03 3.20 0.47 17.25 5.06 3.23 0.46 17.50 5.09 3.25 0.45 17.75 5.11 3.28 0.43 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 18.00 5.14 3.30 0.42 18.25 5.16 3.32 0.40 18.50 5.19 3.34 0.39 18.75 5.21 3.37 0.38 19.00 5.23 3.39 0.36 19.25 5.25 3.40 0.35 19.50 5.27 3.42 0.33 19.75 5.29 3.44 0.32 20.00 5.31 3.46 0.30 Printed 5/28/2021 2021-05-27 Full Routing Prepared by Timmons Gro Type/1 24-hr 10-YR Rainfall=5.58" Summary for Subcatchment 5S: Mite To Bioretention 1 Runoff = 7.18 cfs @ 11.97 hrs, Volume= 0.320 af, Depth> 2.52" Printed 5/28/2021 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 0.510 98 Paved parking, HSG B 0.000 61 >75% Grass cover, Good, HSG B 1.010 60 Woods, Fair, HSG B 1.520 73 Weighted Average 1.010 66.45% Pervious Area 0.510 33.55% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 5S: Mite To Bioretention 1 Hydrograph ❑ RunoH Time (hours) 2021-05-27 Full Routing Prepared by Timmons Gro 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 0.00 9.00 0.82 0.00 0.01 9.25 0.86 0.00 0.02 9.50 0.91 0.01 0.02 9.75 0.96 0.01 0.03 10.00 1.01 0.02 0.04 10.25 1.07 0.03 0.06 10.50 1.14 0.04 0.07 10.75 1.22 0.05 0.10 11.00 1.31 0.08 0.14 11.25 1.43 0.11 0.20 11.50 1.58 0.16 0.30 11.75 2.16 0.39 1.76 12.00 3.70 1.32 6.90 12.25 3.94 1.48 1.02 12.50 4.10 1.60 0.67 12.75 4.21 1.68 0.49 13.00 4.31 1.75 0.42 13.25 4.39 1.81 0.36 13.50 4.46 1.86 0.32 13.75 4.52 1.91 0.28 14.00 4.58 1.95 0.25 14.25 4.63 1.99 0.23 14.50 4.67 2.03 0.22 14.75 4.72 2.06 0.21 15.00 4.76 2.10 0.20 15.25 4.80 2.13 0.19 15.50 4.84 2.16 0.18 15.75 4.88 2.18 0.17 16.00 4.91 2.21 0.16 16.25 4.94 2.24 0.15 16.50 4.97 2.26 0.15 16.75 5.00 2.28 0.14 17.00 5.03 2.31 0.14 17.25 5.06 2.33 0.14 17.50 5.09 2.35 0.13 17.75 5.11 2.37 0.13 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 18.00 5.14 2.39 0.12 18.25 5.16 2.41 0.12 18.50 5.19 2.43 0.12 18.75 5.21 2.45 0.11 19.00 5.23 2.46 0.11 19.25 5.25 2.48 0.10 19.50 5.27 2.50 0.10 19.75 5.29 2.51 0.09 20.00 5.31 2.53 0.09 Printed 5/28/2021 2021-05-27 Full Routing Prepared by Timmons Gro Type/1 24-hr 10-YR Rainfall=5.58" Summary for Subcatchment 7S: To Bioretention 2 Runoff = 14.31 cfs @ 11.97 hrs, Volume= 0.660 af, Depth> 3.36" Printed 5/28/2021 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 1.370 98 Paved parking, HSG B 0.950 61 >75% Grass cover, Good, HSG B 0.040 60 Woods, Fair, HSG B 2.360 82 Weighted Average 0.990 41.95% Pervious Area 1.370 58.05% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 7S: To Bioretention 2 Hydrograph ■ Runoff Time (hours) 2021-05-27 Full Routing Prepared by Timmons Gro 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 0.00 6.00 0.45 0.00 0.00 6.25 0.47 0.00 0.01 6.50 0.50 0.00 0.01 6.75 0.52 0.00 0.02 7.00 0.55 0.01 0.02 7.25 0.58 0.01 0.03 7.50 0.61 0.01 0.04 7.75 0.64 0.02 0.04 8.00 0.67 0.02 0.05 8.25 0.70 0.03 0.06 8.50 0.74 0.04 0.08 8.75 0.78 0.05 0.09 9.00 0.82 0.06 0.11 9.25 0.86 0.07 0.12 9.50 0.91 0.08 0.13 9.75 0.96 0.10 0.15 10.00 1.01 0.12 0.18 10.25 1.07 0.14 0.22 10.50 1.14 0.17 0.27 10.75 1.22 0.20 0.34 11.00 1.31 0.25 0.43 11.25 1.43 0.31 0.59 11.50 1.58 0.39 0.81 11.75 2.16 0.76 4.16 12.00 3.70 1.95 13.51 12.25 3.94 2.15 1.90 12.50 4.10 2.29 1.23 12.75 4.21 2.39 0.90 13.00 4.31 2.47 0.76 13.25 4.39 2.54 0.65 13.50 4.46 2.60 0.58 13.75 4.52 2.65 0.51 14.00 4.58 2.70 0.45 14.25 4.63 2.75 0.42 14.50 4.67 2.79 0.40 14.75 4.72 2.83 0.38 15.00 4.76 2.87 0.36 15.25 4.80 2.90 0.34 15.50 4.84 2.94 0.32 15.75 4.88 2.97 0.30 16.00 4.91 3.00 0.28 16.25 4.94 3.03 0.27 16.50 4.97 3.05 0.26 16.75 5.00 3.08 0.25 17.00 5.03 3.11 0.25 17.25 5.06 3.13 0.24 17.50 5.09 3.16 0.23 17.75 5.11 3.18 0.22 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 18.00 5.14 3.20 0.22 18.25 5.16 3.23 0.21 18.50 5.19 3.25 0.20 18.75 5.21 3.27 0.20 19.00 5.23 3.29 0.19 19.25 5.25 3.31 0.18 19.50 5.27 3.33 0.17 19.75 5.29 3.34 0.17 20.00 5.31 3.36 0.16 Printed 5/28/2021 2021-05-27 Full Routing Prepared by Timmons Gro Type/1 24-hr 10-YR Rainfall=5.58" Summary for Subcatchment 9S: To Dry Pond 3 Runoff = 43.50 cfs @ 11.97 hrs, Volume= 2.017 af, Depth> 3.45" Printed 5/28/2021 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 4.240 98 Paved parking, HSG B 2.770 61 >75% Grass cover, Good, HSG B 0.000 60 Woods, Fair, HSG B 7.010 83 Weighted Average 2.770 39.51 % Pervious Area 4.240 60.49% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 9S: To Dry Pond 3 Hydrograph ■ Rurwff Time (hours) 2021-05-27 Full Routing Prepared by Timmons Gro Type/1 24-hr 10-YR Rainfall=5.58" Hydrograph for Subcatchment 9S: To Dry Pond 3 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 5.00 0.35 0.00 0.00 5.25 0.37 0.00 0.00 5.50 0.40 0.00 0.00 5.75 0.42 0.00 0.00 6.00 0.45 0.00 0.02 6.25 0.47 0.00 0.04 6.50 0.50 0.00 0.05 6.75 0.52 0.01 0.07 7.00 0.55 0.01 0.09 7.25 0.58 0.01 0.11 7.50 0.61 0.02 0.13 7.75 0.64 0.02 0.15 8.00 0.67 0.03 0.18 8.25 0.70 0.04 0.21 8.50 0.74 0.05 0.26 8.75 0.78 0.06 0.31 9.00 0.82 0.07 0.36 9.25 0.86 0.08 0.41 9.50 0.91 0.10 0.44 9.75 0.96 0.12 0.50 10.00 1.01 0.14 0.60 10.25 1.07 0.16 0.72 10.50 1.14 0.19 0.87 10.75 1.22 0.23 1.09 11.00 1.31 0.28 1.36 11.25 1.43 0.34 1.86 11.50 1.58 0.43 2.54 11.75 2.16 0.81 12.86 12.00 3.70 2.03 41.00 12.25 3.94 2.23 5.72 12.50 4.10 2.37 3.71 12.75 4.21 2.47 2.72 13.00 4.31 2.56 2.28 13.25 4.39 2.63 1.97 13.50 4.46 2.69 1.73 13.75 4.52 2.74 1.54 14.00 4.58 2.79 1.36 14.25 4.63 2.84 1.26 14.50 4.67 2.88 1.20 14.75 4.72 2.92 1.14 15.00 4.76 2.96 1.08 15.25 4.80 3.00 1.02 15.50 4.84 3.03 0.96 15.75 4.88 3.06 0.90 16.00 4.91 3.09 0.84 16.25 4.94 3.12 0.81 16.50 4.97 3.15 0.78 16.75 5.00 3.18 0.76 17.00 5.03 3.20 0.74 17.25 5.06 3.23 0.72 17.50 5.09 3.25 0.70 17.75 5.11 3.28 0.68 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 18.00 5.14 3.30 0.65 18.25 5.16 3.32 0.63 18.50 5.19 3.34 0.61 18.75 5.21 3.37 0.59 19.00 5.23 3.39 0.57 19.25 5.25 3.40 0.54 19.50 5.27 3.42 0.52 19.75 5.29 3.44 0.50 20.00 5.31 3.46 0.48 Printed 5/28/2021 2021-05-27 Full Routing Prepared by Timmons Gro Type/1 24-hr 10-YR Rainfall=5.58" Printed 5/28/2021 Summary for Subcatchment 11S: Onsite Unrouted 4 Runoff = 2.43 cfs @ 11.98 hrs, Volume= 0.106 af, Depth> 2.02" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24-hr 10-YR Rainfall=5.58" Area (ac) CN Description 0.110 98 Paved parking, HSG B 0.380 61 >75% Grass cover, Good, HSG B 0.140 60 Woods, Fair, HSG B 0.630 67 Weighted Average 0.520 82.54% Pervious Area 0.110 17.46% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 11S: Onsite Unrouted 4 Hydrograph 2 43 da Type II 24-hr I10-YR Rainfall=5.58" Runoff Area=0.630 ac Runoff Volume=0.106 of Runoff Depth>2.02" Tc=6.0 min CN=67 5 b 1 8 9 1U 11 12 iJ 14 15 1U I 18 19 2U Time (hours) ❑ RunoH 2021-05-27 Full Routing Prepared by Timmons Gro 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 0.00 10.50 1.14 0.00 0.01 10.75 1.22 0.01 0.02 11.00 1.31 0.02 0.03 11.25 1.43 0.04 0.04 11.50 1.58 0.06 0.07 11.75 2.16 0.23 0.50 12.00 3.70 0.96 2.34 12.25 3.94 1.11 0.36 12.50 4.10 1.21 0.24 12.75 4.21 1.28 0.18 13.00 4.31 1.34 0.15 13.25 4.39 1.39 0.13 13.50 4.46 1.44 0.11 13.75 4.52 1.48 0.10 14.00 4.58 1.51 0.09 14.25 4.63 1.55 0.09 14.50 4.67 1.58 0.08 14.75 4.72 1.61 0.08 15.00 4.76 1.64 0.07 15.25 4.80 1.67 0.07 15.50 4.84 1.69 0.07 15.75 4.88 1.72 0.06 16.00 4.91 1.74 0.06 16.25 4.94 1.76 0.06 16.50 4.97 1.78 0.05 16.75 5.00 1.80 0.05 17.00 5.03 1.83 0.05 17.25 5.06 1.84 0.05 17.50 5.09 1.86 0.05 17.75 5.11 1.88 0.05 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 18.00 5.14 1.90 0.05 18.25 5.16 1.92 0.04 18.50 5.19 1.93 0.04 18.75 5.21 1.95 0.04 19.00 5.23 1.97 0.04 19.25 5.25 1.98 0.04 19.50 5.27 2.00 0.04 19.75 5.29 2.01 0.04 20.00 5.31 2.02 0.03 Printed 5/28/2021 2021-05-27 Full Routing Type // 24-hr 10-YR Rainfall=5.58" Prepared by Timmons Group Printed 5/28/2021 Summary for Subcatchment 12S: Onsite Unrouted 5 Runoff = 1.20 cfs @ 11.98 hrs, Volume= 0.053 af, Depth> 2.10" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24-hr 10-YR Rainfall=5.58" Area (ac) CN 0.060 98 Paved parking, HSG B 0.200 61 >75% Grass cover, Good, HSG B 0.040 60 Woods, Fair, HSG B 0.300 68 Weighted Average 0.240 80.00% Pervious Area 0.060 20.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 12S: Onsite Unrouted 5 Hydrograph ❑ RunoH Type II 24-hr 10-YR Rainfall=5.58" Runoff Area=0.300 ac Runoff Volume=0.053 of Runoff Depth>2.10" i.0 min CN=ja8 12 13 14 15 16 17 18 19 20 Time (hours) 2021-05-27 Full Routing Prepared by Timmons Gro 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 0.00 0.00 10.50 1.14 0.01 0.01 10.75 1.22 0.02 0.01 11.00 1.31 0.03 0.01 11.25 1.43 0.05 0.02 11.50 1.58 0.08 0.04 11.75 2.16 0.25 0.25 12.00 3.70 1.02 1.16 12.25 3.94 1.17 0.18 12.50 4.10 1.27 0.12 12.75 4.21 1.34 0.09 13.00 4.31 1.40 0.07 13.25 4.39 1.46 0.06 13.50 4.46 1.50 0.06 13.75 4.52 1.55 0.05 14.00 4.58 1.58 0.04 14.25 4.63 1.62 0.04 14.50 4.67 1.65 0.04 14.75 4.72 1.68 0.04 15.00 4.76 1.71 0.04 15.25 4.80 1.74 0.03 15.50 4.84 1.77 0.03 15.75 4.88 1.79 0.03 16.00 4.91 1.82 0.03 16.25 4.94 1.84 0.03 16.50 4.97 1.86 0.03 16.75 5.00 1.88 0.03 17.00 5.03 1.90 0.02 17.25 5.06 1.92 0.02 17.50 5.09 1.94 0.02 17.75 5.11 1.96 0.02 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 18.00 5.14 1.98 0.02 18.25 5.16 2.00 0.02 18.50 5.19 2.01 0.02 18.75 5.21 2.03 0.02 19.00 5.23 2.05 0.02 19.25 5.25 2.06 0.02 19.50 5.27 2.08 0.02 19.75 5.29 2.09 0.02 20.00 5.31 2.10 0.02 Printed 5/28/2021 2021-05-27 Full Routing Prepared by Timmons Gro Type/1 24-hr 10-YR Rainfall=5.58" Summary for Pond 6P: BIORETENTION 1 [88] Warning: Qout>Qin may require smaller dt or Finer Routing Printed 5/28/2021 Inflow Area = 8.360 ac, 54.55% Impervious, Inflow Depth > 3.07" for 10-YR event Inflow = 48.60 cfs @ 11.97 hrs, Volume= 2.141 of Outflow = 48.74 cfs @ 11.98 hrs, Volume= 1.793 af, Atten= 0%, Lag= 0.5 min Primary = 48.74 cfs @ 11.98 hrs, Volume= 1.793 of Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Peak Elev= 415.82' @ 11.98 hrs Surf.Area= 6,336 sf Storage= 19,664 cf Plug -Flow detention time= 72.4 min calculated for 1.787 of (83% of inflow) Center -of -Mass det. time= 24.9 min ( 804.6 - 779.7 ) Volume Invert Avail.Storage Storage Description #1 406.00' 32,374 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Voids Inc.Store Cum.Store (feet) (sq-ft) M (cubic -feet) (cubic -feet) 406.00 3,808 0.0 0 0 411.00 3,808 40.0 7,616 7,616 414.00 3,808 25.0 2,856 10,472 415.00 5,174 100.0 4,491 14,963 416.00 6,596 100.0 5,885 20,848 417.50 8,772 100.0 11,526 32,374 Device Routing Invert Outlet Devices #1 Primary 409.71' 36.0" Round HDPE_Round 36" L= 47.6' RCP, sq.cut end projecting, Ke= 0.500 Inlet / Outlet Invert= 409.71' / 409.00' S= 0.0149 '/' Cc= 0.900 n= 0.010 PVC, smooth interior, Flow Area= 7.07 sf #2 Device 1 415.00' 60.0" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #3 Primary 415.70' 95.0' long x 1.0' breadth Broad -Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 Coef. (English) 2.69 2.72 2.75 2.85 2.98 3.08 3.20 3.28 3.31 3.30 3.31 3.32 Primary OutFlow Max=46.30 cfs @ 11.98 hrs HW=415.81' (Free Discharge) 11=HDPE Round 36" (Passes 37.28 cfs of 72.98 cfs potential flow) t2=Orifice/Grate (Weir Controls 37.28 cfs @ 2.94 fps) 3=Broad-Crested Rectangular Weir (Weir Controls 9.02 cfs @ 0.88 fps) 2021-05-27 Full Routing Prepared by Timmons Grc Type /l 24-hr 10-YR Rainfall=5.58" Printed 5/28/2021 ■■■.■ . ■■■■ ■■■■■ - r ON a WON ■■■■■ i�i��-man r ■■■■■ ii'� ii`iia r ■■■■■ ■■ ■■■■■ ■■IME ■■ ,r MENEM ...■... r MEN /� iiiiiii r 417 416 415 414 1 413 c 412 0 410 409 408 407 Pond 6P: BIORETENTION 1 Stage -Discharge Broad -Crested Rectangular Weir Orifice/Grate H DPE Round 36" '.. 406-*� / / / / / / 0 160 260 360 460 560 600 700 800 Discharge (ds) ■ Inflow ■ Pdmary ❑ Primary 406-*� / / / / / / 0 160 260 360 460 560 600 700 800 Discharge (ds) ■ Inflow ■ Pdmary ❑ Primary 2021-05-27 Full Routing Prepared by Timmons Grc j4 �4 W Type /l 24-hr 10-YR Rainfall=5.58" Printed 5/28/2021 Pond 6P: BIORETENTION 1 Stage -Area -Storage Surface/Horizontal/Wetted Area (sq-ft) !1 9nn 4 M 4 KAA 7 nnn 7 G A- nnn O C AMA A C1111 G M G C1111 O nnn O G A 7 nnn 7 =nn O nnn Q =nn r, 1■I■1■L■I■I■I■11 .� '.,.,,I� 1 V 1.1■'.L.,.L'.L1I r r. Custom Stage r. 0 2,000 4,000 5,000 8,00010,00012,00014,00016,00018,00020,00022,00024,00026,00028,00030,00032,000 Storage (cubic -feet) ■ Surface ■ Storage 2021-05-27 Full Routing Prepared by Timmons Gro 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 0 406.00 0.00 5.50 0.00 0 406.00 0.00 6.00 0.01 6 406.00 0.00 6.50 0.03 47 406.03 0.00 7.00 0.06 131 406.09 0.00 7.50 0.08 260 406.17 0.00 8.00 0.11 438 406.29 0.00 8.50 0.16 682 406.45 0.00 9.00 0.24 1,042 406.68 0.00 9.50 0.30 1,535 407.01 0.00 10.00 0.42 2,170 407.42 0.00 10.50 0.63 3,107 408.04 0.00 11.00 1.01 4,557 408.99 0.00 11.50 1.93 7,101 410.66 0.00 12.00 47.06 19,630 415.81 47.84 12.50 4.36 16,042 415.20 4.70 13.00 2.66 15,685 415.14 2.76 13.50 2.02 15,557 415.11 2.07 14.00 1.59 15,475 415.10 1.63 14.50 1.40 15,434 415.09 1.41 15.00 1.26 15,408 415.09 1.28 15.50 1.12 15,364 415.08 1.15 16.00 0.98 15,315 415.07 1.01 16.50 0.91 15,285 415.06 0.92 17.00 0.86 15,267 415.06 0.87 17.50 0.81 15,250 415.05 0.82 18.00 0.76 15,232 415.05 0.77 18.50 0.71 15,214 415.05 0.72 19.00 0.66 15,197 415.04 0.67 19.50 0.61 15,179 415.04 0.62 20.00 0.56 15,161 415.04 0.57 Printed 5/28/2021 2021-05-27 Full Routing Prepared by Timmons Gro Elevation Primary (feet) (cfs) 406.00 0.00 406.06 0.00 406.12 0.00 406.18 0.00 406.24 0.00 406.30 0.00 406.36 0.00 406.42 0.00 406.48 0.00 406.54 0.00 406.60 0.00 406.66 0.00 406.72 0.00 406.78 0.00 406.84 0.00 406.90 0.00 406.96 0.00 407.02 0.00 407.08 0.00 407.14 0.00 407.20 0.00 407.26 0.00 407.32 0.00 407.38 0.00 407.44 0.00 407.50 0.00 407.56 0.00 407.62 0.00 407.68 0.00 407.74 0.00 407.80 0.00 407.86 0.00 407.92 0.00 407.98 0.00 408.04 0.00 408.10 0.00 408.16 0.00 408.22 0.00 408.28 0.00 408.34 0.00 408.40 0.00 408.46 0.00 408.52 0.00 408.58 0.00 408.64 0.00 408.70 0.00 408.76 0.00 408.82 0.00 408.88 0.00 408.94 0.00 409.00 0.00 409.06 0.00 Type/1 24-hr 10-YR Rainfall=5.58" Stage -Discharge for Pond 6P: BIORETENTION 1 Elevation Primary (feet) (cfs) 409.12 0.00 409.18 0.00 409.24 0.00 409.30 0.00 409.36 0.00 409.42 0.00 409.48 0.00 409.54 0.00 409.60 0.00 409.66 0.00 409.72 0.00 409.78 0.00 409.84 0.00 409.90 0.00 409.96 0.00 410.02 0.00 410.08 0.00 410.14 0.00 410.20 0.00 410.26 0.00 410.32 0.00 410.38 0.00 410.44 0.00 410.50 0.00 410.56 0.00 410.62 0.00 410.68 0.00 410.74 0.00 410.80 0.00 410.86 0.00 410.92 0.00 410.98 0.00 411.04 0.00 411.10 0.00 411.16 0.00 411.22 0.00 411.28 0.00 411.34 0.00 411.40 0.00 411.46 0.00 411.52 0.00 411.58 0.00 411.64 0.00 411.70 0.00 411.76 0.00 411.82 0.00 411.88 0.00 411.94 0.00 412.00 0.00 412.06 0.00 412.12 0.00 412.18 0.00 Elevation Primary (feet) (cfs) 412.24 0.00 412.30 0.00 412.36 0.00 412.42 0.00 412.48 0.00 412.54 0.00 412.60 0.00 412.66 0.00 412.72 0.00 412.78 0.00 412.84 0.00 412.90 0.00 412.96 0.00 413.02 0.00 413.08 0.00 413.14 0.00 413.20 0.00 413.26 0.00 413.32 0.00 413.38 0.00 413.44 0.00 413.50 0.00 413.56 0.00 413.62 0.00 413.68 0.00 413.74 0.00 413.80 0.00 413.86 0.00 413.92 0.00 413.98 0.00 414.04 0.00 414.10 0.00 414.16 0.00 414.22 0.00 414.28 0.00 414.34 0.00 414.40 0.00 414.46 0.00 414.52 0.00 414.58 0.00 414.64 0.00 414.70 0.00 414.76 0.00 414.82 0.00 414.88 0.00 414.94 0.00 415.00 0.00 415.06 0.75 415.12 2.14 415.18 3.92 415.24 6.04 415.30 8.44 Printed 5/28/2021 Elevation Primary (feet) (cfs) 415.36 11.09 415.42 13.98 415.48 17.08 415.54 20.38 415.60 23.87 415.66 27.54 415.72 32.10 415.78 41.17 415.84 52.93 415.90 66.71 415.96 82.31 416.02 99.48 416.08 118.11 416.14 138.10 416.20 159.38 416.26 181.89 416.32 204.94 416.38 226.01 416.44 248.37 416.50 272.01 416.56 297.61 416.62 324.62 416.68 353.05 416.74 382.31 416.80 412.56 416.86 444.09 416.92 477.15 416.98 512.09 417.04 548.43 417.10 586.18 417.16 623.34 417.22 661.67 417.28 701.19 417.34 739.89 417.40 778.51 417.46 817.97 2021-05-27 Full Routing Prepared by Timmons Gro Type/1 24-hr 10-YR Rainfall=5.58" Stage -Area -Storage for Pond 6P: BIORETENTION 1 Elevation Surface Storage (feet) (sq-ft) (cubic -feet) 406.00 3,808 0 406.15 3,808 228 406.30 3,808 457 406.45 3,808 685 406.60 3,808 914 406.75 3,808 1,142 406.90 3,808 1,371 407.05 3,808 1,599 407.20 3,808 1,828 407.35 3,808 2,056 407.50 3,808 2,285 407.65 3,808 2,513 407.80 3,808 2,742 407.95 3,808 2,970 408.10 3,808 3,199 408.25 3,808 3,427 408.40 3,808 3,656 408.55 3,808 3,884 408.70 3,808 4,113 408.85 3,808 4,341 409.00 3,808 4,570 409.15 3,808 4,798 409.30 3,808 5,027 409.45 3,808 5,255 409.60 3,808 5,484 409.75 3,808 5,712 409.90 3,808 5,940 410.05 3,808 6,169 410.20 3,808 6,397 410.35 3,808 6,626 410.50 3,808 6,854 410.65 3,808 7,083 410.80 3,808 7,311 410.95 3,808 7,540 411.10 3,808 7,711 411.25 3,808 7,854 411.40 3,808 7,997 411.55 3,808 8,140 411.70 3,808 8,282 411.85 3,808 8,425 412.00 3,808 8,568 412.15 3,808 8,711 412.30 3,808 8,854 412.45 3,808 8,996 412.60 3,808 9,139 412.75 3,808 9,282 412.90 3,808 9,425 413.05 3,808 9,568 413.20 3,808 9,710 413.35 3,808 9,853 413.50 3,808 9,996 413.65 3,808 10,139 Elevation Surface Storage (feet) (sq-ft) (cubic -feet) 413.80 3,808 10,282 413.95 3,808 10,424 414.10 3,945 10,860 414.25 4,150 11,467 414.40 4,354 12,104 414.55 4,559 12,773 414.70 4,764 13,472 414.85 4,969 14,202 415.00 5,174 14,963 415.15 5,387 15,755 415.30 5,601 16,579 415.45 5,814 17,435 415.60 6,027 18,323 415.75 6,241 19,243 415.90 6,454 20,196 416.05 6,669 21,180 416.20 6,886 22,196 416.35 7,104 23,245 416.50 7,321 24,327 416.65 7,539 25,442 416.80 7,757 26,589 416.95 7,974 27,769 417.10 8,192 28,981 417.25 8,409 30,226 417.40 8,627 31,504 Printed 5/28/2021 2021-05-27 Full Routing Prepared by Timmons Gro Type/1 24-hr 10-YR Rainfall=5.58" Summary for Pond 8P: BIORETENTION 2 Printed 5/28/2021 Inflow Area = 2.360 ac, 58.05% Impervious, Inflow Depth > 3.36" for 10-YR event Inflow = 14.31 cfs @ 11.97 hrs, Volume= 0.660 of Outflow = 14.11 cfs @ 11.99 hrs, Volume= 0.532 af, Atten= 1%, Lag= 1.1 min Primary = 14.11 cfs @ 11.99 hrs, Volume= 0.532 of Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Peak Elev= 432.50' @ 11.99 hrs Surf.Area= 2,197 sf Storage= 6,776 cf Plug -Flow detention time= 82.2 min calculated for 0.530 of (80% of inflow) Center -of -Mass det. time= 29.6 min ( 800.7 - 771.0 ) Volume Invert Avail.Storage Storage Description #1 423.91' 10,323 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Voids Inc.Store Cum.Store (feet) (sq-ft) M (cubic -feet) (cubic -feet) 423.91 1,587 0.0 0 0 427.91 1,587 40.0 2,539 2,539 430.91 1,587 25.0 1,190 3,729 431.00 1,627 100.0 145 3,874 432.00 2,041 100.0 1,834 5,708 433.00 2,350 100.0 2,196 7,904 434.00 2,489 100.0 2,420 10,323 Device Routino Invert Outlet Devices #1 Primary 424.43' 18.0" Round HDPE_Round 18" L= 61.4' RCP, sq.cut end projecting, Ke= 0.500 Inlet / Outlet Invert= 424.43' / 423.82' S= 0.0099 '/' Cc= 0.900 n= 0.010 PVC, smooth interior, Flow Area= 1.77 sf #2 Device 1 431.91' 36.0" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads Primary OutFlow Max=13.65 cfs @ 11.99 hrs HW=432.49' (Free Discharge) L1=HDPE_Round 18" (Passes 13.65 cfs of 23.01 cfs potential flow) t2=Orifice/Grate (Weir Controls 13.65 cfs @ 2.49 fps) 2021-05-27 Full Routing Prepared by Timmons Grc 0 LL i c m m W Type 1124-hr 10-YR Rainfall=5.58" Printed 5/28/2021 Pond 8P: BIORETENTION 2 Hydrograph Time (hours) Pond 8P: BIORETENTION 2 Stage -Discharge 434 433 _.. ,. Orifice/Grate - 432 431 430- 429- .. ...... 428 ,_ ........_.. 427 426 425 HD 424 0 2 4 6 6 10 12 14 16 16 20 22 24 Discharge (de) ■ Inflow ■ Primary ❑ Primary 2021-05-27 Full Routing Prepared by Timmons Grc Type 1124-hr 10-YR Rainfall=5.58" Pond 8P: BIORETENTION 2 Stage -Area -Storage Storage (cubic -feet) Printed 5/28/2021 ■ Surface ■ Storage 2021-05-27 Full Routing Prepared by Timmons Gro Type/1 24-hr 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 0.00 0 423.91 0.00 6.50 0.01 9 423.92 0.00 7.00 0.02 40 423.97 0.00 7.50 0.04 93 424.06 0.00 8.00 0.05 171 424.18 0.00 8.50 0.08 281 424.35 0.00 9.00 0.11 446 424.61 0.00 9.50 0.13 667 424.96 0.00 10.00 0.18 947 425.40 0.00 10.50 0.27 1,354 426.04 0.00 11.00 0.43 1,977 427.02 0.00 11.50 0.81 3,057 429.21 0.00 12.00 13.51 6,765 432.50 13.95 12.50 1.23 5,768 432.03 1.32 13.00 0.76 5,700 432.00 0.78 13.50 0.58 5,670 431.98 0.59 14.00 0.45 5,641 431.97 0.47 14.50 0.40 5,625 431.96 0.41 15.00 0.36 5,615 431.95 0.37 15.50 0.32 5,606 431.95 0.33 16.00 0.28 5,596 431.94 0.29 16.50 0.26 5,590 431.94 0.26 17.00 0.25 5,587 431.94 0.25 17.50 0.23 5,583 431.94 0.23 18.00 0.22 5,580 431.94 0.22 18.50 0.20 5,576 431.93 0.20 19.00 0.19 5,573 431.93 0.19 19.50 0.17 5,569 431.93 0.18 20.00 0.16 5,565 431.93 0.16 Printed 5/28/2021 2021-05-27 Full Routing Prepared by Timmons Gro Elevation Primary (feet) (cfs) 423.91 0.00 423.97 0.00 424.03 0.00 424.09 0.00 424.15 0.00 424.21 0.00 424.27 0.00 424.33 0.00 424.39 0.00 424.45 0.00 424.51 0.00 424.57 0.00 424.63 0.00 424.69 0.00 424.75 0.00 424.81 0.00 424.87 0.00 424.93 0.00 424.99 0.00 425.05 0.00 425.11 0.00 425.17 0.00 425.23 0.00 425.29 0.00 425.35 0.00 425.41 0.00 425.47 0.00 425.53 0.00 425.59 0.00 425.65 0.00 425.71 0.00 425.77 0.00 425.83 0.00 425.89 0.00 425.95 0.00 426.01 0.00 426.07 0.00 426.13 0.00 426.19 0.00 426.25 0.00 426.31 0.00 426.37 0.00 426.43 0.00 426.49 0.00 426.55 0.00 426.61 0.00 426.67 0.00 426.73 0.00 426.79 0.00 426.85 0.00 426.91 0.00 426.97 0.00 Type 1124-hr 10-YR Rainfall=5.58" Stage -Discharge for Pond 8P: BIORETENTION 2 Elevation Primary (feet) (cfs) 427.03 0.00 427.09 0.00 427.15 0.00 427.21 0.00 427.27 0.00 427.33 0.00 427.39 0.00 427.45 0.00 427.51 0.00 427.57 0.00 427.63 0.00 427.69 0.00 427.75 0.00 427.81 0.00 427.87 0.00 427.93 0.00 427.99 0.00 428.05 0.00 428.11 0.00 428.17 0.00 428.23 0.00 428.29 0.00 428.35 0.00 428.41 0.00 428.47 0.00 428.53 0.00 428.59 0.00 428.65 0.00 428.71 0.00 428.77 0.00 428.83 0.00 428.89 0.00 428.95 0.00 429.01 0.00 429.07 0.00 429.13 0.00 429.19 0.00 429.25 0.00 429.31 0.00 429.37 0.00 429.43 0.00 429.49 0.00 429.55 0.00 429.61 0.00 429.67 0.00 429.73 0.00 429.79 0.00 429.85 0.00 429.91 0.00 429.97 0.00 430.03 0.00 430.09 0.00 Elevation Primary (feet) (cfs) 430.15 0.00 430.21 0.00 430.27 0.00 430.33 0.00 430.39 0.00 430.45 0.00 430.51 0.00 430.57 0.00 430.63 0.00 430.69 0.00 430.75 0.00 430.81 0.00 430.87 0.00 430.93 0.00 430.99 0.00 431.05 0.00 431.11 0.00 431.17 0.00 431.23 0.00 431.29 0.00 431.35 0.00 431.41 0.00 431.47 0.00 431.53 0.00 431.59 0.00 431.65 0.00 431.71 0.00 431.77 0.00 431.83 0.00 431.89 0.00 431.95 0.25 432.01 0.97 432.07 1.97 432.13 3.18 432.19 4.57 432.25 6.11 432.31 7.80 432.37 9.62 432.43 11.56 432.49 13.61 432.55 15.78 432.61 18.05 432.67 20.42 432.73 22.88 432.79 23.47 432.85 23.56 432.91 23.66 432.97 23.75 433.03 23.84 433.09 23.93 433.15 24.02 433.21 24.11 Printed 5/28/2021 Elevation Primary (feet) (cfs) 433.27 24.20 433.33 24.29 433.39 24.38 433.45 24.47 433.51 24.56 433.57 24.65 433.63 24.73 433.69 24.82 433.75 24.91 433.81 25.00 433.87 25.08 433.93 25.17 433.99 25.26 2021-05-27 Full Routing Prepared by Timmons Gro Type/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 5/28/2021 2021-05-27 Full Routing Prepared by Timmons Gro Type/1 24-hr 10-YR Rainfall=5.58" Summary for Pond 10P: DRY POND Printed 5/28/2021 Inflow Area = 7.010 ac, 60.49% Impervious, Inflow Depth > 3.45" for 10-YR event Inflow = 43.50 cfs @ 11.97 hrs, Volume= 2.017 of Outflow = 37.11 cfs @ 12.02 hrs, Volume= 1.829 af, Atten= 15%, Lag= 3.1 min Primary = 37.11 cfs @ 12.02 hrs, Volume= 1.829 of Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Peak Elev= 424.87' @ 12.01 hrs Surf.Area= 5,890 sf Storage= 23,332 cf Plug -Flow detention time= 86.9 min calculated for 1.829 of (91% of inflow) Center -of -Mass det. time= 54.5 min ( 823.3 - 768.8 ) Volume Invert Avail.Storage Storage Description #1 418.00' 33,448 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic -feet) (cubic -feet) 418.00 1,082 0 0 419.00 1,611 1,347 1,347 420.00 2,218 1,915 3,261 421.00 2,905 2,562 5,823 422.00 3,711 3,308 9,131 423.00 4,590 4,151 13,281 424.00 5,526 5,058 18,339 424.10 5,622 557 18,896 425.00 5,935 5,201 24,097 426.00 6,368 6,152 30,249 426.50 6,431 3,200 33,448 Device Routing Invert Outlet Devices #1 Primary 417.90' 24.0" Round Culvert L= 117.9' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 417.90' / 417.01' S= 0.0075 '/' Cc= 0.900 n= 0.010 PVC, smooth interior, Flow Area= 3.14 sf #2 Device 1 418.00' 4.0" W x 4.2" H Vert. Orifice/Grate C= 0.600 #3 Device 1 423.92' 60.0" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #4 Primary 424.99' 45.0' long x 5.0' breadth Broad -Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 Primary OutFlow Max=36.84 cfs @ 12.02 hrs HW=424.83' (Free Discharge) 1_Cu lvert (Inlet Controls 36.84 cfs @ 11.73 fps) �2=Orifice/Grate (Passes < 1.45 cfs potential flow) 3=Orifice/Grate (Passes < 44.60 cfs potential flow) =Broad -Crested Rectangular Weir ( Controls 0.00 cfs) 2021-05-27 Full Routing Prepared by Timmons Grc 42 42 42 42 c 0 m 42 W 42 42 41 41 0 Type 1124-hr 10-YR Rainfall=5.58" Printed 5/28/2021 LC Pape 64 Pond 10P: DRY POND Hydrograph Time (hours) Pond 10P: DRY POND Stage -Discharge 8 LU 4U UU aU lUU l[U 14U 1w laU LUU LLU 24U L(jU Discharge ids) Fill—, —fl M ■ Primary 0 Primary 2021-05-27 Full Routing Prepared by Timmons Grc 42 42 42 j 42 c m 42 W 42 42 41 41 0 Type 1124-hr 10-YR Rainfall=5.58" Printed 5/28/2021 Pond 10P: DRY POND Stage -Area -Storage Surface/Horizontal/Wetted Area (sq-ft) n Mn 1 nnn 1 5nn 9 nnn 2 5nn s nnn a 5nn 4 nnn 4 5nn 5 nnn 5 5nn a nnn ENINEINNINEP ■■I��I■■IP-M/ NINE r III■/..I■I■■1■■1■■ Custom Stage Data Z—A 5,000 10,000 15,000 20,000 25,000 30,000 Storage (cubic -feet) ■ Surface ■ Storage 2021-05-27 Full Routing Prepared by Timmons Gro Type/1 24-hr 10-YR Rainfall=5.58" Hydrograph for Pond 10P: DRY POND Time Inflow Storage Elevation Primary (hours) (cfs) (cubic -feet) (feet) (cfs) 5.00 0.00 0 418.00 0.00 5.50 0.00 0 418.00 0.00 6.00 0.02 9 418.01 0.00 6.50 0.05 58 418.05 0.02 7.00 0.09 136 418.12 0.05 7.50 0.13 216 418.19 0.09 8.00 0.18 290 418.25 0.14 8.50 0.26 376 418.32 0.20 9.00 0.36 509 418.43 0.27 9.50 0.44 680 418.55 0.34 10.00 0.60 916 418.72 0.41 10.50 0.87 1,392 419.03 0.52 11.00 1.36 2,319 419.55 0.66 11.50 2.54 4,365 420.46 0.85 12.00 41.00 23,316 424.87 36.95 12.50 3.71 18,675 424.06 4.11 13.00 2.28 18,308 423.99 2.42 13.50 1.73 18,124 423.96 1.82 14.00 1.36 17,975 423.93 1.47 14.50 1.20 17,790 423.90 1.34 15.00 1.08 17,437 423.83 1.34 15.50 0.96 16,886 423.73 1.32 16.00 0.84 16,141 423.59 1.31 16.50 0.78 15,260 423.41 1.29 17.00 0.74 14,338 423.22 1.26 17.50 0.70 13,382 423.02 1.24 18.00 0.65 12,396 422.80 1.21 18.50 0.61 11,385 422.57 1.18 19.00 0.57 10,353 422.32 1.14 19.50 0.52 9,306 422.05 1.11 20.00 0.48 8,252 421.76 1.06 Printed 5/28/2021 2021-05-27 Full Routing Prepared by Timmons Gro Elevation Primary (feet) (cfs) 418.00 0.00 418.10 0.03 418.20 0.10 418.30 0.18 418.40 0.26 418.50 0.32 418.60 0.36 418.70 0.41 418.80 0.44 418.90 0.48 419.00 0.51 419.10 0.54 419.20 0.57 419.30 0.60 419.40 0.62 419.50 0.65 419.60 0.67 419.70 0.69 419.80 0.72 419.90 0.74 420.00 0.76 420.10 0.78 420.20 0.80 420.30 0.82 420.40 0.84 420.50 0.86 420.60 0.87 420.70 0.89 420.80 0.91 420.90 0.93 421.00 0.94 421.10 0.96 421.20 0.98 421.30 0.99 421.40 1.01 421.50 1.02 421.60 1.04 421.70 1.05 421.80 1.07 421.90 1.08 422.00 1.10 422.10 1.11 422.20 1.13 422.30 1.14 422.40 1.15 422.50 1.17 422.60 1.18 422.70 1.19 422.80 1.21 422.90 1.22 423.00 1.23 423.10 1.25 Type/1 24-hr 10-YR Rainfall=5.58" Stage -Discharge for Pond 10P: DRY POND Elevation Primary (feet) (cfs) 423.20 1.26 423.30 1.27 423.40 1.28 423.50 1.30 423.60 1.31 423.70 1.32 423.80 1.33 423.90 1.34 424.00 2.52 424.10 5.29 424.20 8.99 424.30 13.42 424.40 18.48 424.50 24.10 424.60 30.23 424.70 36.43 424.80 36.74 424.90 37.05 425.00 37.47 425.10 41.51 425.20 48.14 425.30 57.13 425.40 68.22 425.50 81.64 425.60 97.02 425.70 111.84 425.80 127.65 425.90 144.71 426.00 162.67 426.10 181.05 426.20 200.16 426.30 220.25 426.40 241.08 426.50 262.97 Printed 5/28/2021 2021-05-27 Full Routing Prepared by Timmons Gro Type/1 24-hr 10-YR Rainfall=5.58" Stage -Area -Storage for Pond 10P: DRY POND Elevation Surface Storage (feet) (sq-ft) (cubic -feet) 418.00 1,082 0 418.10 1,135 ill 418.20 1,188 227 418.30 1,241 348 418.40 1,294 475 418.50 1,347 607 418.60 1,399 744 418.70 1,452 887 418.80 1,505 1,035 418.90 1,558 1,188 419.00 1,611 1,347 419.10 1,672 1,511 419.20 1,732 1,681 419.30 1,793 1,857 419.40 1,854 2,039 419.50 1,915 2,228 419.60 1,975 2,422 419.70 2,036 2,623 419.80 2,097 2,830 419.90 2,157 3,042 420.00 2,218 3,261 420.10 2,287 3,486 420.20 2,355 3,718 420.30 2,424 3,957 420.40 2,493 4,203 420.50 2,562 4,456 420.60 2,630 4,715 420.70 2,699 4,982 420.80 2,768 5,255 420.90 2,836 5,535 421.00 2,905 5,823 421.10 2,986 6,117 421.20 3,066 6,420 421.30 3,147 6,730 421.40 3,227 7,049 421.50 3,308 7,376 421.60 3,389 7,711 421.70 3,469 8,053 421.80 3,550 8,404 421.90 3,630 8,763 422.00 3,711 9,131 422.10 3,799 9,506 422.20 3,887 9,890 422.30 3,975 10,283 422.40 4,063 10,685 422.50 4,151 11,096 422.60 4,238 11,515 422.70 4,326 11,944 422.80 4,414 12,381 422.90 4,502 12,826 423.00 4,590 13,281 423.10 4,684 13,745 Elevation Surface Storage (feet) (sq-ft) (cubic -feet) 423.20 4,777 14,218 423.30 4,871 14,700 423.40 4,964 15,192 423.50 5,058 15,693 423.60 5,152 16,203 423.70 5,245 16,723 423.80 5,339 17,253 423.90 5,432 17,791 424.00 5,526 18,339 424.10 5,622 18,896 424.20 5,657 19,460 424.30 5,692 20,028 424.40 5,726 20,599 424.50 5,761 21,173 424.60 5,796 21,751 424.70 5,831 22,332 424.80 5,865 22,917 424.90 5,900 23,505 425.00 5,935 24,097 425.10 5,978 24,693 425.20 6,022 25,293 425.30 6,065 25,897 425.40 6,108 26,506 425.50 6,152 27,119 425.60 6,195 27,736 425.70 6,238 28,358 425.80 6,281 28,984 425.90 6,325 29,614 426.00 6,368 30,249 426.10 6,381 30,886 426.20 6,393 31,525 426.30 6,406 32,165 426.40 6,418 32,806 426.50 6,431 33,448 Printed 5/28/2021 2021-05-27 Full Routing Prepared by Timmons Gro Type/1 24-hr 10-YR Rainfall=5.58" Printed 5/28/2021 Summary for Link 13L: POST Combined Inflow Area = 16.300 ac, 55.03% Impervious, Inflow Depth > 2.78" for 10-YR event Inflow = 88.93 cfs @ 11.99 hrs, Volume= 3.781 of Primary = 88.93 cfs @ 11.99 hrs, Volume= 3.781 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Link 13L: POST Combined Hydrograph IIIIIIIII'Illllllll,lllllllll,lllllllll,lllllllll,lllllllll, !%''����i/�i////�/////////////� I J , I • 1 I Time (hours) ■ h fim— ■ Primary 2021-05-27 Full Routing Prepared by Timmons Gro Type/1 24-hr 10-YR Rainfall=5.58" Hydrograph for Link 13L: POST Combined Time Inflow Elevation Primary (hours) (cfs) (feet) (cfs) 5.00 0.00 0.00 0.00 5.25 0.00 0.00 0.00 5.50 0.00 0.00 0.00 5.75 0.00 0.00 0.00 6.00 0.00 0.00 0.00 6.25 0.01 0.00 0.01 6.50 0.02 0.00 0.02 6.75 0.03 0.00 0.03 7.00 0.05 0.00 0.05 7.25 0.07 0.00 0.07 7.50 0.09 0.00 0.09 7.75 0.11 0.00 0.11 8.00 0.14 0.00 0.14 8.25 0.16 0.00 0.16 8.50 0.20 0.00 0.20 8.75 0.23 0.00 0.23 9.00 0.27 0.00 0.27 9.25 0.31 0.00 0.31 9.50 0.34 0.00 0.34 9.75 0.37 0.00 0.37 10.00 0.41 0.00 0.41 10.25 0.47 0.00 0.47 10.50 0.53 0.00 0.53 10.75 0.61 0.00 0.61 11.00 0.70 0.00 0.70 11.25 0.81 0.00 0.81 11.50 0.96 0.00 0.96 11.75 1.85 0.00 1.85 12.00 88.29 0.00 88.29 12.25 14.92 0.00 14.92 12.50 9.17 0.00 9.17 12.75 6.43 0.00 6.43 13.00 5.40 0.00 5.40 13.25 4.61 0.00 4.61 13.50 4.06 0.00 4.06 13.75 3.59 0.00 3.59 14.00 3.24 0.00 3.24 14.25 2.96 0.00 2.96 14.50 2.88 0.00 2.88 14.75 2.80 0.00 2.80 15.00 2.72 0.00 2.72 15.25 2.65 0.00 2.65 15.50 2.57 0.00 2.57 15.75 2.49 0.00 2.49 16.00 2.40 0.00 2.40 16.25 2.33 0.00 2.33 16.50 2.29 0.00 2.29 16.75 2.25 0.00 2.25 17.00 2.21 0.00 2.21 17.25 2.17 0.00 2.17 17.50 2.13 0.00 2.13 17.75 2.09 0.00 2.09 Time Inflow Elevation Primary (hours) (cfs) (feet) (cfs) 18.00 2.05 0.00 2.05 18.25 2.00 0.00 2.00 18.50 1.96 0.00 1.96 18.75 1.92 0.00 1.92 19.00 1.87 0.00 1.87 19.25 1.82 0.00 1.82 19.50 1.78 0.00 1.78 19.75 1.73 0.00 1.73 20.00 1.68 0.00 1.68 Printed 5/28/2021 2021-05-27 Full Routing Prepared by Timmons Gro Type II 24-hr 100-YR Rainfall=9.16" Printed 5/28/2021 Time span=5.00-20.00 hrs, dt=0.05 hrs, 301 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment 4S: Onsite To Bioretention 1 Runoff Area=4.480 ac 59.82% Impervious Runoff Depth>6.65" Tc=6.0 min CN=83 Runoff=51.32 cfs 2.482 of Subcatchment 5S: Offsite To Bioretention 1 Runoff Area=1.520 ac 33.55% Impervious Runoff Depth>5.45" Tc=6.0 min CN=73 Runoff=14.99 cfs 0.690 of Subcatchment 7S: To Bioretention 2 Runoff Area=2.360 ac 58.05% Impervious Runoff Depth>6.53" Tc=6.0 min CN=82 Runoff=26.71 cfs 1.285 of Subcatchment 9S: To Dry Pond 3 Runoff Area=7.010 ac 60.49% Impervious Runoff Depth>6.65" Tc=6.0 min CN=83 Runoff=80.29 cfs 3.884 of Subcatchment 11S: Onsite Unrouted 4 Runoff Area=0.630 ac 17.46% Impervious Runoff Depth>4.72" Tc=6.0 min CN=67 Runoff=5.50 cfs 0.248 of Subcatchment 12S: Onsite Unrouted 5 Runoff Area=0.300 ac 20.00% Impervious Runoff Depth>4.84" Tc=6.0 min CN=68 Runoff=2.68 cfs 0.121 of Pond 6P: BIORETENTION 1 Peak Elev=415.99' Storage=20,763 cf Inflow=90.40 cfs 4.328 of Outflow=90.15 cfs 3.977 of Pond 8P: BIORETENTION 2 Peak Elev=432.98' Storage=7,858 cf Inflow=26.71 cfs 1.285 of Outflow=23.84 cfs 1.156 of Pond 10P: DRY POND Peak Elev=425.49' Storage=27,051 cf Inflow=80.29 cfs 3.884 of Outflow=79.67 cfs 3.541 of Link 13L: POST Combined Inflow=178.03 cfs 7.887 of Primary=178.03 cfs 7.887 of Total Runoff Area = 16.300 ac Runoff Volume = 8.710 of Average Runoff Depth = 6.41" 44.97% Pervious = 7.330 ac 55.03% Impervious = 8.970 ac 2021-05-27 Full Routing Prepared by Timmons Gro Type II 24-hr 100-YR Rainfall=9.16" Summary for Subcatchment 4S: Onsite To Bioretention 1 Runoff = 51.32 cfs @ 11.96 hrs, Volume= 2.482 af, Depth> 6.65" Printed 5/28/2021 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 2.680 98 Paved parking, HSG B 1.540 61 >75% Grass cover, Good, HSG B 0.260 60 Woods, Fair, HSG B 4.480 83 Weighted Average 1.800 40.18% Pervious Area 2.680 59.82% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 4S: Onsite To Bioretention 1 Hydrograph ■ Rurwff Time (hours) 2021-05-27 Full Routing Prepared by Timmons Gro Type II 24-hr 100-YR Rainfall=9.16" Hydrograph for Subcatchment 4S: Onsite To Bioretention 1 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 5.00 0.58 0.01 0.09 5.25 0.61 0.02 0.11 5.50 0.65 0.03 0.13 5.75 0.69 0.03 0.16 6.00 0.73 0.04 0.18 6.25 0.77 0.06 0.20 6.50 0.82 0.07 0.23 6.75 0.86 0.08 0.26 7.00 0.91 0.10 0.28 7.25 0.95 0.11 0.31 7.50 1.00 0.13 0.34 7.75 1.05 0.15 0.36 8.00 1.10 0.17 0.39 8.25 1.15 0.20 0.44 8.50 1.21 0.23 0.51 8.75 1.28 0.26 0.59 9.00 1.35 0.29 0.67 9.25 1.42 0.33 0.72 9.50 1.49 0.37 0.75 9.75 1.57 0.42 0.84 10.00 1.66 0.47 0.97 10.25 1.76 0.53 1.14 10.50 1.87 0.61 1.34 10.75 2.00 0.69 1.63 11.00 2.15 0.80 1.97 11.25 2.34 0.94 2.61 11.50 2.59 1.13 3.47 11.75 3.54 1.90 16.57 12.00 6.07 4.16 47.87 12.25 6.47 4.53 6.52 12.50 6.73 4.78 4.20 12.75 6.92 4.95 3.07 13.00 7.07 5.10 2.57 13.25 7.20 5.22 2.22 13.50 7.32 5.33 1.94 13.75 7.42 5.43 1.72 14.00 7.51 5.51 1.53 14.25 7.59 5.59 1.41 14.50 7.67 5.67 1.34 14.75 7.75 5.74 1.28 15.00 7.82 5.80 1.21 15.25 7.88 5.87 1.14 15.50 7.95 5.93 1.07 15.75 8.01 5.98 1.00 16.00 8.06 6.04 0.93 16.25 8.11 6.09 0.89 16.50 8.16 6.13 0.87 16.75 8.21 6.18 0.85 17.00 8.26 6.23 0.82 17.25 8.31 6.27 0.80 17.50 8.35 6.31 0.77 17.75 8.39 6.35 0.75 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 18.00 8.44 6.39 0.72 18.25 8.48 6.43 0.70 18.50 8.52 6.47 0.67 18.75 8.55 6.51 0.65 19.00 8.59 6.54 0.62 19.25 8.62 6.58 0.60 19.50 8.66 6.61 0.58 19.75 8.69 6.64 0.55 20.00 8.72 6.67 0.53 Printed 5/28/2021 2021-05-27 Full Routing Prepared by Timmons Gro Type II 24-hr 100-YR Rainfall=9.16" Summary for Subcatchment 5S: Mite To Bioretention 1 Runoff = 14.99 cfs @ 11.97 hrs, Volume= 0.690 af, Depth> 5.45" Printed 5/28/2021 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 0.510 98 Paved parking, HSG B 0.000 61 >75% Grass cover, Good, HSG B 1.010 60 Woods, Fair, HSG B 1.520 73 Weighted Average 1.010 66.45% Pervious Area 0.510 33.55% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 5S: Mite To Bioretention 1 Hydrograph ■ Rurwff Time (hours) 2021-05-27 Full Routing Prepared by Timmons Gro Type II 24-hr 100-YR Rainfall=9.16" Hydrograph for Subcatchment 5S: Offsite To Bioretention 1 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 5.00 0.58 0.00 0.00 5.25 0.61 0.00 0.00 5.50 0.65 0.00 0.00 5.75 0.69 0.00 0.00 6.00 0.73 0.00 0.00 6.25 0.77 0.00 0.00 6.50 0.82 0.00 0.01 6.75 0.86 0.00 0.01 7.00 0.91 0.01 0.02 7.25 0.95 0.01 0.03 7.50 1.00 0.02 0.03 7.75 1.05 0.02 0.04 8.00 1.10 0.03 0.05 8.25 1.15 0.04 0.06 8.50 1.21 0.05 0.08 8.75 1.28 0.07 0.09 9.00 1.35 0.09 0.11 9.25 1.42 0.11 0.12 9.50 1.49 0.13 0.14 9.75 1.57 0.15 0.16 10.00 1.66 0.18 0.19 10.25 1.76 0.22 0.23 10.50 1.87 0.26 0.28 10.75 2.00 0.32 0.35 11.00 2.15 0.39 0.45 11.25 2.34 0.49 0.61 11.50 2.59 0.62 0.84 11.75 3.54 1.21 4.33 12.00 6.07 3.15 14.17 12.25 6.47 3.48 1.99 12.50 6.73 3.71 1.29 12.75 6.92 3.86 0.95 13.00 7.07 4.00 0.80 13.25 7.20 4.11 0.69 13.50 7.32 4.21 0.61 13.75 7.42 4.30 0.54 14.00 7.51 4.38 0.48 14.25 7.59 4.45 0.44 14.50 7.67 4.52 0.42 14.75 7.75 4.59 0.40 15.00 7.82 4.65 0.38 15.25 7.88 4.71 0.36 15.50 7.95 4.76 0.34 15.75 8.01 4.82 0.32 16.00 8.06 4.86 0.29 16.25 8.11 4.91 0.28 16.50 8.16 4.95 0.27 16.75 8.21 5.00 0.27 17.00 8.26 5.04 0.26 17.25 8.31 5.08 0.25 17.50 8.35 5.12 0.24 17.75 8.39 5.16 0.24 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 18.00 8.44 5.20 0.23 18.25 8.48 5.23 0.22 18.50 8.52 5.27 0.21 18.75 8.55 5.30 0.21 19.00 8.59 5.34 0.20 19.25 8.62 5.37 0.19 19.50 8.66 5.40 0.18 19.75 8.69 5.43 0.17 20.00 8.72 5.45 0.17 Printed 5/28/2021 2021-05-27 Full Routing Prepared by Timmons Gro Type II 24-hr 100-YR Rainfall=9.16" Summary for Subcatchment 7S: To Bioretention 2 Runoff = 26.71 cfs @ 11.96 hrs, Volume= 1.285 af, Depth> 6.53" Printed 5/28/2021 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 1.370 98 Paved parking, HSG B 0.950 61 >75% Grass cover, Good, HSG B 0.040 60 Woods, Fair, HSG B 2.360 82 Weighted Average 0.990 41.95% Pervious Area 1.370 58.05% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 7S: To Bioretention 2 Hydrograph ■ Rurwff Time (hours) 2021-05-27 Full Routing Prepared by Timmons Gro Type II 24-hr 100-YR Rainfall=9.16" Hydrograph for Subcatchment 7S: To Bioretention 2 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 5.00 0.58 0.01 0.04 5.25 0.61 0.01 0.05 5.50 0.65 0.02 0.06 5.75 0.69 0.03 0.07 6.00 0.73 0.03 0.08 6.25 0.77 0.04 0.10 6.50 0.82 0.06 0.11 6.75 0.86 0.07 0.12 7.00 0.91 0.08 0.13 7.25 0.95 0.10 0.15 7.50 1.00 0.11 0.16 7.75 1.05 0.13 0.18 8.00 1.10 0.15 0.19 8.25 1.15 0.17 0.22 8.50 1.21 0.20 0.25 8.75 1.28 0.23 0.29 9.00 1.35 0.27 0.33 9.25 1.42 0.30 0.36 9.50 1.49 0.34 0.37 9.75 1.57 0.39 0.42 10.00 1.66 0.44 0.49 10.25 1.76 0.49 0.57 10.50 1.87 0.56 0.68 10.75 2.00 0.65 0.82 11.00 2.15 0.75 1.00 11.25 2.34 0.89 1.33 11.50 2.59 1.07 1.78 11.75 3.54 1.82 8.54 12.00 6.07 4.05 24.94 12.25 6.47 4.42 3.40 12.50 6.73 4.67 2.20 12.75 6.92 4.84 1.61 13.00 7.07 4.98 1.34 13.25 7.20 5.11 1.16 13.50 7.32 5.22 1.02 13.75 7.42 5.31 0.90 14.00 7.51 5.40 0.80 14.25 7.59 5.48 0.74 14.50 7.67 5.55 0.70 14.75 7.75 5.62 0.67 15.00 7.82 5.69 0.63 15.25 7.88 5.75 0.60 15.50 7.95 5.81 0.56 15.75 8.01 5.87 0.53 16.00 8.06 5.92 0.49 16.25 8.11 5.97 0.47 16.50 8.16 6.01 0.46 16.75 8.21 6.06 0.44 17.00 8.26 6.11 0.43 17.25 8.31 6.15 0.42 17.50 8.35 6.19 0.40 17.75 8.39 6.23 0.39 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 18.00 8.44 6.27 0.38 18.25 8.48 6.31 0.37 18.50 8.52 6.35 0.35 18.75 8.55 6.39 0.34 19.00 8.59 6.42 0.33 19.25 8.62 6.45 0.31 19.50 8.66 6.49 0.30 19.75 8.69 6.52 0.29 20.00 8.72 6.55 0.28 Printed 5/28/2021 2021-05-27 Full Routing Prepared by Timmons Gro Type II 24-hr 100-YR Rainfall=9.16" Printed 5/28/2021 Summary for Subcatchment 9S: To Dry Pond 3 Runoff = 80.29 cfs @ 11.96 hrs, Volume= 3.884 af, Depth> 6.65" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24-hr 100-YR Rainfall=9.16" Area (ac) CN Description 4.240 98 Paved parking, HSG B 2.770 61 >75% Grass cover, Good, HSG B 0.000 60 Woods, Fair, HSG B 7.010 83 Weighted Average 2.770 39.51 % Pervious Area 4.240 60.49% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, 85 80 75 70 65 60 55 w 50 V 3 45 LL 40 35 30 25 20 15 10 5 0 Subcatchment 9S: To Dry Pond 3 Hydrograph Time (hours) ■ Runoff 2021-05-27 Full Routing Prepared by Timmons Gro Type II 24-hr 100-YR Rainfall=9.16" Hydrograph for Subcatchment 9S: To Dry Pond 3 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 5.00 0.58 0.01 0.14 5.25 0.61 0.02 0.17 5.50 0.65 0.03 0.21 5.75 0.69 0.03 0.24 6.00 0.73 0.04 0.28 6.25 0.77 0.06 0.32 6.50 0.82 0.07 0.36 6.75 0.86 0.08 0.40 7.00 0.91 0.10 0.44 7.25 0.95 0.11 0.48 7.50 1.00 0.13 0.53 7.75 1.05 0.15 0.57 8.00 1.10 0.17 0.61 8.25 1.15 0.20 0.69 8.50 1.21 0.23 0.80 8.75 1.28 0.26 0.92 9.00 1.35 0.29 1.05 9.25 1.42 0.33 1.13 9.50 1.49 0.37 1.17 9.75 1.57 0.42 1.31 10.00 1.66 0.47 1.51 10.25 1.76 0.53 1.78 10.50 1.87 0.61 2.10 10.75 2.00 0.69 2.54 11.00 2.15 0.80 3.09 11.25 2.34 0.94 4.09 11.50 2.59 1.13 5.43 11.75 3.54 1.90 25.92 12.00 6.07 4.16 74.91 12.25 6.47 4.53 10.20 12.50 6.73 4.78 6.57 12.75 6.92 4.95 4.81 13.00 7.07 5.10 4.02 13.25 7.20 5.22 3.47 13.50 7.32 5.33 3.04 13.75 7.42 5.43 2.69 14.00 7.51 5.51 2.39 14.25 7.59 5.59 2.21 14.50 7.67 5.67 2.10 14.75 7.75 5.74 2.00 15.00 7.82 5.80 1.89 15.25 7.88 5.87 1.78 15.50 7.95 5.93 1.68 15.75 8.01 5.98 1.57 16.00 8.06 6.04 1.46 16.25 8.11 6.09 1.40 16.50 8.16 6.13 1.36 16.75 8.21 6.18 1.32 17.00 8.26 6.23 1.28 17.25 8.31 6.27 1.25 17.50 8.35 6.31 1.21 17.75 8.39 6.35 1.17 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 18.00 8.44 6.39 1.13 18.25 8.48 6.43 1.09 18.50 8.52 6.47 1.05 18.75 8.55 6.51 1.02 19.00 8.59 6.54 0.98 19.25 8.62 6.58 0.94 19.50 8.66 6.61 0.90 19.75 8.69 6.64 0.86 20.00 8.72 6.67 0.82 Printed 5/28/2021 2021-05-27 Full Routing Prepared by Timmons Gro Type II 24-hr 100-YR Rainfall=9.16" Summary for Subcatchment 11S: Onsite Unrouted 4 Runoff = 5.50 cfs @ 11.97 hrs, Volume= 0.248 af, Depth> 4.72" Printed 5/28/2021 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 0.110 98 Paved parking, HSG B 0.380 61 >75% Grass cover, Good, HSG B 0.140 60 Woods, Fair, HSG B 0.630 67 Weighted Average 0.520 82.54% Pervious Area 0.110 17.46% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 11S: Onsite Unrouted 4 Hydrograph ■ Rurwff Time (hours) 2021-05-27 Full Routing Prepared by Timmons Gro Type II 24-hr 100-YR Rainfall=9.16" Hydrograph for Subcatchment 11S: Onsite Unrouted 4 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 5.00 0.58 0.00 0.00 5.25 0.61 0.00 0.00 5.50 0.65 0.00 0.00 5.75 0.69 0.00 0.00 6.00 0.73 0.00 0.00 6.25 0.77 0.00 0.00 6.50 0.82 0.00 0.00 6.75 0.86 0.00 0.00 7.00 0.91 0.00 0.00 7.25 0.95 0.00 0.00 7.50 1.00 0.00 0.00 7.75 1.05 0.00 0.00 8.00 1.10 0.00 0.00 8.25 1.15 0.01 0.01 8.50 1.21 0.01 0.01 8.75 1.28 0.02 0.02 9.00 1.35 0.02 0.02 9.25 1.42 0.04 0.03 9.50 1.49 0.05 0.03 9.75 1.57 0.06 0.04 10.00 1.66 0.08 0.05 10.25 1.76 0.10 0.06 10.50 1.87 0.13 0.08 10.75 2.00 0.17 0.10 11.00 2.15 0.22 0.13 11.25 2.34 0.29 0.19 11.50 2.59 0.40 0.27 11.75 3.54 0.88 1.46 12.00 6.07 2.59 5.24 12.25 6.47 2.89 0.76 12.50 6.73 3.10 0.49 12.75 6.92 3.24 0.36 13.00 7.07 3.36 0.31 13.25 7.20 3.47 0.26 13.50 7.32 3.56 0.23 13.75 7.42 3.65 0.21 14.00 7.51 3.72 0.18 14.25 7.59 3.79 0.17 14.50 7.67 3.85 0.16 14.75 7.75 3.91 0.15 15.00 7.82 3.97 0.15 15.25 7.88 4.03 0.14 15.50 7.95 4.08 0.13 15.75 8.01 4.13 0.12 16.00 8.06 4.17 0.11 16.25 8.11 4.22 0.11 16.50 8.16 4.26 0.11 16.75 8.21 4.30 0.10 17.00 8.26 4.34 0.10 17.25 8.31 4.38 0.10 17.50 8.35 4.41 0.10 17.75 8.39 4.45 0.09 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 18.00 8.44 4.49 0.09 18.25 8.48 4.52 0.09 18.50 8.52 4.55 0.08 18.75 8.55 4.58 0.08 19.00 8.59 4.62 0.08 19.25 8.62 4.64 0.07 19.50 8.66 4.67 0.07 19.75 8.69 4.70 0.07 20.00 8.72 4.73 0.07 Printed 5/28/2021 2021-05-27 Full Routing Prepared by Timmons Gro Type II 24-hr 100-YR Rainfall=9.16" Summary for Subcatchment 12S: Onsite Unrouted 5 Runoff = 2.68 cfs @ 11.97 hrs, Volume= 0.121 af, Depth> 4.84" Printed 5/28/2021 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 0.060 98 Paved parking, HSG B 0.200 61 >75% Grass cover, Good, HSG B 0.040 60 Woods, Fair, HSG B 0.300 68 Weighted Average 0.240 80.00% Pervious Area 0.060 20.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 12S: Onsite Unrouted 5 Hydrograph ■ Rurwff Time (hours) 2021-05-27 Full Routing Prepared by Timmons Gro Type II 24-hr 100-YR Rainfall=9.16" Hydrograph for Subcatchment 12S: Onsite Unrouted 5 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 5.00 0.58 0.00 0.00 5.25 0.61 0.00 0.00 5.50 0.65 0.00 0.00 5.75 0.69 0.00 0.00 6.00 0.73 0.00 0.00 6.25 0.77 0.00 0.00 6.50 0.82 0.00 0.00 6.75 0.86 0.00 0.00 7.00 0.91 0.00 0.00 7.25 0.95 0.00 0.00 7.50 1.00 0.00 0.00 7.75 1.05 0.00 0.00 8.00 1.10 0.01 0.00 8.25 1.15 0.01 0.00 8.50 1.21 0.01 0.01 8.75 1.28 0.02 0.01 9.00 1.35 0.03 0.01 9.25 1.42 0.04 0.01 9.50 1.49 0.06 0.02 9.75 1.57 0.07 0.02 10.00 1.66 0.09 0.03 10.25 1.76 0.12 0.03 10.50 1.87 0.15 0.04 10.75 2.00 0.19 0.05 11.00 2.15 0.25 0.07 11.25 2.34 0.32 0.09 11.50 2.59 0.43 0.13 11.75 3.54 0.93 0.72 12.00 6.07 2.68 2.55 12.25 6.47 2.99 0.37 12.50 6.73 3.20 0.24 12.75 6.92 3.34 0.18 13.00 7.07 3.47 0.15 13.25 7.20 3.58 0.13 13.50 7.32 3.67 0.11 13.75 7.42 3.75 0.10 14.00 7.51 3.83 0.09 14.25 7.59 3.90 0.08 14.50 7.67 3.96 0.08 14.75 7.75 4.02 0.07 15.00 7.82 4.08 0.07 15.25 7.88 4.14 0.07 15.50 7.95 4.19 0.06 15.75 8.01 4.24 0.06 16.00 8.06 4.29 0.06 16.25 8.11 4.33 0.05 16.50 8.16 4.37 0.05 16.75 8.21 4.41 0.05 17.00 8.26 4.45 0.05 17.25 8.31 4.49 0.05 17.50 8.35 4.53 0.05 17.75 8.39 4.57 0.04 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 18.00 8.44 4.60 0.04 18.25 8.48 4.64 0.04 18.50 8.52 4.67 0.04 18.75 8.55 4.70 0.04 19.00 8.59 4.74 0.04 19.25 8.62 4.76 0.04 19.50 8.66 4.79 0.03 19.75 8.69 4.82 0.03 20.00 8.72 4.85 0.03 Printed 5/28/2021 2021-05-27 Full Routing Prepared by Timmons Gro Type II 24-hr 100-YR Rainfall=9.16" Summary for Pond 6P: BIORETENTION 1 Printed 5/28/2021 Inflow Area = 8.360 ac, 54.55% Impervious, Inflow Depth > 6.21" for 100-YR event Inflow = 90.40 cfs @ 11.97 hrs, Volume= 4.328 of Outflow = 90.15 cfs @ 11.98 hrs, Volume= 3.977 af, Atten= 0%, Lag= 0.5 min Primary = 90.15 cfs @ 11.98 hrs, Volume= 3.977 of Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Peak Elev= 415.99' @ 11.98 hrs Surf.Area= 6,578 sf Storage= 20,763 cf Plug -Flow detention time= 48.3 min calculated for 3.977 of (92% of inflow) Center -of -Mass det. time= 19.2 min ( 783.1 - 763.9 ) Volume Invert Avail.Storage Storage Description #1 406.00' 32,374 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Voids Inc.Store Cum.Store (feet) (sq-ft) M (cubic -feet) (cubic -feet) 406.00 3,808 0.0 0 0 411.00 3,808 40.0 7,616 7,616 414.00 3,808 25.0 2,856 10,472 415.00 5,174 100.0 4,491 14,963 416.00 6,596 100.0 5,885 20,848 417.50 8,772 100.0 11,526 32,374 Device Routing Invert Outlet Devices #1 Primary 409.71' 36.0" Round HDPE_Round 36" L= 47.6' RCP, sq.cut end projecting, Ke= 0.500 Inlet / Outlet Invert= 409.71' / 409.00' S= 0.0149 '/' Cc= 0.900 n= 0.010 PVC, smooth interior, Flow Area= 7.07 sf #2 Device 1 415.00' 60.0" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #3 Primary 415.70' 95.0' long x 1.0' breadth Broad -Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 Coef. (English) 2.69 2.72 2.75 2.85 2.98 3.08 3.20 3.28 3.31 3.30 3.31 3.32 Primary OutFlow Max=86.90 cfs @ 11.98 hrs HW=415.98' (Free Discharge) 11=HDPE Round 36" (Passes 49.57 cfs of 74.31 cfs potential flow) t2=Orifice/Grate (Weir Controls 49.57 cfs @ 3.23 fps) 3=Broad-Crested Rectangular Weir (Weir Controls 37.33 cfs @ 1.42 fps) 2021-05-27 Full Routing Prepared by Timmons Grc 417 416 415 414 1 413 c 412 0 410 409 408 407 Type 11 24-hr 100-YR Rainfall=9.16" Printed 5/28/2021 Pond 6P: BIORETENTION 1 Hydrograph Time (hours) Pond 6P: BIORETENTION 1 Stage -Discharge Broad -Crested Rectangular Weir Orifice/Grate H DPE Round 36" '.. 406-x / / / / / / / / 0 160 260 360 460 560 660 760 800 Discharge (ds) ■ InflM_ ■ Pdmary ❑ Primary 406-x / / / / / / / / 0 160 260 360 460 560 660 760 800 Discharge (ds) ■ InflM_ ■ Pdmary ❑ Primary 2021-05-27 Full Routing Prepared by Timmons Grc j4 �4 W Type 11 24-hr 100-YR Rainfall=9.16" Printed 5/28/2021 Pond 6P: BIORETENTION 1 Stage -Area -Storage Surface/Horizontal/Wetted Area (sq-ft) !1 9nn 4 M 4 KAA 7 nnn 7 G A- nnn O C AMA A C1111 G M G C1111 O nnn O G A 7 nnn 7 =nn O nnn Q =nn r, 1■I■1■L■I■I■I■11 .� '.,.,,I� 1 V 1.1■'.L.,.L'.L1I r r. Custom Stage r. 0 2,000 4,000 5,000 8,00010,00012,00014,00016,00018,00020,00022,00024,00026,00028,00030,00032,000 Storage (cubic -feet) ■ Surface ■ Storage 2021-05-27 Full Routing Prepared by Timmons Gro Type II 24-hr 100-YR Rainfall=9.16" Hydrograph for Pond 6P: BIORETENTION 1 Time Inflow Storage Elevation Primary (hours) (cfs) (cubic -feet) (feet) (cfs) 5.00 0.09 8 406.01 0.00 5.50 0.13 206 406.14 0.00 6.00 0.18 488 406.32 0.00 6.50 0.24 862 406.57 0.00 7.00 0.30 1,349 406.89 0.00 7.50 0.37 1,955 407.28 0.00 8.00 0.44 2,684 407.76 0.00 8.50 0.59 3,595 408.36 0.00 9.00 0.78 4,822 409.17 0.00 9.50 0.88 6,335 410.16 0.00 10.00 1.15 8,135 411.55 0.00 10.50 1.62 10,607 414.04 0.00 11.00 3.37 14,506 414.91 0.00 11.50 6.03 16,194 415.23 5.78 12.00 85.80 20,701 415.98 87.59 12.50 7.81 16,569 415.30 8.42 13.00 4.75 16,069 415.21 4.89 13.50 3.59 15,858 415.17 3.69 14.00 2.82 15,709 415.14 2.89 14.50 2.48 15,637 415.13 2.50 15.00 2.23 15,590 415.12 2.25 15.50 1.98 15,544 415.11 2.01 16.00 1.73 15,498 415.10 1.75 16.50 1.60 15,471 415.10 1.61 17.00 1.51 15,455 415.09 1.52 17.50 1.42 15,438 415.09 1.43 18.00 1.33 15,421 415.09 1.34 18.50 1.24 15,403 415.08 1.26 19.00 1.15 15,372 415.08 1.17 19.50 1.06 15,341 415.07 1.08 20.00 0.97 15,309 415.07 0.99 Printed 5/28/2021 2021-05-27 Full Routing Prepared by Timmons Gro Elevation Primary (feet) (cfs) 406.00 0.00 406.06 0.00 406.12 0.00 406.18 0.00 406.24 0.00 406.30 0.00 406.36 0.00 406.42 0.00 406.48 0.00 406.54 0.00 406.60 0.00 406.66 0.00 406.72 0.00 406.78 0.00 406.84 0.00 406.90 0.00 406.96 0.00 407.02 0.00 407.08 0.00 407.14 0.00 407.20 0.00 407.26 0.00 407.32 0.00 407.38 0.00 407.44 0.00 407.50 0.00 407.56 0.00 407.62 0.00 407.68 0.00 407.74 0.00 407.80 0.00 407.86 0.00 407.92 0.00 407.98 0.00 408.04 0.00 408.10 0.00 408.16 0.00 408.22 0.00 408.28 0.00 408.34 0.00 408.40 0.00 408.46 0.00 408.52 0.00 408.58 0.00 408.64 0.00 408.70 0.00 408.76 0.00 408.82 0.00 408.88 0.00 408.94 0.00 409.00 0.00 409.06 0.00 Type II 24-hr 100-YR Rainfall=9.16" Stage -Discharge for Pond 6P: BIORETENTION 1 Elevation Primary (feet) (cfs) 409.12 0.00 409.18 0.00 409.24 0.00 409.30 0.00 409.36 0.00 409.42 0.00 409.48 0.00 409.54 0.00 409.60 0.00 409.66 0.00 409.72 0.00 409.78 0.00 409.84 0.00 409.90 0.00 409.96 0.00 410.02 0.00 410.08 0.00 410.14 0.00 410.20 0.00 410.26 0.00 410.32 0.00 410.38 0.00 410.44 0.00 410.50 0.00 410.56 0.00 410.62 0.00 410.68 0.00 410.74 0.00 410.80 0.00 410.86 0.00 410.92 0.00 410.98 0.00 411.04 0.00 411.10 0.00 411.16 0.00 411.22 0.00 411.28 0.00 411.34 0.00 411.40 0.00 411.46 0.00 411.52 0.00 411.58 0.00 411.64 0.00 411.70 0.00 411.76 0.00 411.82 0.00 411.88 0.00 411.94 0.00 412.00 0.00 412.06 0.00 412.12 0.00 412.18 0.00 Elevation Primary (feet) (cfs) 412.24 0.00 412.30 0.00 412.36 0.00 412.42 0.00 412.48 0.00 412.54 0.00 412.60 0.00 412.66 0.00 412.72 0.00 412.78 0.00 412.84 0.00 412.90 0.00 412.96 0.00 413.02 0.00 413.08 0.00 413.14 0.00 413.20 0.00 413.26 0.00 413.32 0.00 413.38 0.00 413.44 0.00 413.50 0.00 413.56 0.00 413.62 0.00 413.68 0.00 413.74 0.00 413.80 0.00 413.86 0.00 413.92 0.00 413.98 0.00 414.04 0.00 414.10 0.00 414.16 0.00 414.22 0.00 414.28 0.00 414.34 0.00 414.40 0.00 414.46 0.00 414.52 0.00 414.58 0.00 414.64 0.00 414.70 0.00 414.76 0.00 414.82 0.00 414.88 0.00 414.94 0.00 415.00 0.00 415.06 0.75 415.12 2.14 415.18 3.92 415.24 6.04 415.30 8.44 Printed 5/28/2021 Elevation Primary (feet) (cfs) 415.36 11.09 415.42 13.98 415.48 17.08 415.54 20.38 415.60 23.87 415.66 27.54 415.72 32.10 415.78 41.17 415.84 52.93 415.90 66.71 415.96 82.31 416.02 99.48 416.08 118.11 416.14 138.10 416.20 159.38 416.26 181.89 416.32 204.94 416.38 226.01 416.44 248.37 416.50 272.01 416.56 297.61 416.62 324.62 416.68 353.05 416.74 382.31 416.80 412.56 416.86 444.09 416.92 477.15 416.98 512.09 417.04 548.43 417.10 586.18 417.16 623.34 417.22 661.67 417.28 701.19 417.34 739.89 417.40 778.51 417.46 817.97 2021-05-27 Full Routing Prepared by Timmons Gro Type II 24-hr 100-YR Rainfall=9.16" Stage -Area -Storage for Pond 6P: BIORETENTION 1 Elevation Surface Storage (feet) (sq-ft) (cubic -feet) 406.00 3,808 0 406.15 3,808 228 406.30 3,808 457 406.45 3,808 685 406.60 3,808 914 406.75 3,808 1,142 406.90 3,808 1,371 407.05 3,808 1,599 407.20 3,808 1,828 407.35 3,808 2,056 407.50 3,808 2,285 407.65 3,808 2,513 407.80 3,808 2,742 407.95 3,808 2,970 408.10 3,808 3,199 408.25 3,808 3,427 408.40 3,808 3,656 408.55 3,808 3,884 408.70 3,808 4,113 408.85 3,808 4,341 409.00 3,808 4,570 409.15 3,808 4,798 409.30 3,808 5,027 409.45 3,808 5,255 409.60 3,808 5,484 409.75 3,808 5,712 409.90 3,808 5,940 410.05 3,808 6,169 410.20 3,808 6,397 410.35 3,808 6,626 410.50 3,808 6,854 410.65 3,808 7,083 410.80 3,808 7,311 410.95 3,808 7,540 411.10 3,808 7,711 411.25 3,808 7,854 411.40 3,808 7,997 411.55 3,808 8,140 411.70 3,808 8,282 411.85 3,808 8,425 412.00 3,808 8,568 412.15 3,808 8,711 412.30 3,808 8,854 412.45 3,808 8,996 412.60 3,808 9,139 412.75 3,808 9,282 412.90 3,808 9,425 413.05 3,808 9,568 413.20 3,808 9,710 413.35 3,808 9,853 413.50 3,808 9,996 413.65 3,808 10,139 Elevation Surface Storage (feet) (sq-ft) (cubic -feet) 413.80 3,808 10,282 413.95 3,808 10,424 414.10 3,945 10,860 414.25 4,150 11,467 414.40 4,354 12,104 414.55 4,559 12,773 414.70 4,764 13,472 414.85 4,969 14,202 415.00 5,174 14,963 415.15 5,387 15,755 415.30 5,601 16,579 415.45 5,814 17,435 415.60 6,027 18,323 415.75 6,241 19,243 415.90 6,454 20,196 416.05 6,669 21,180 416.20 6,886 22,196 416.35 7,104 23,245 416.50 7,321 24,327 416.65 7,539 25,442 416.80 7,757 26,589 416.95 7,974 27,769 417.10 8,192 28,981 417.25 8,409 30,226 417.40 8,627 31,504 Printed 5/28/2021 2021-05-27 Full Routing Prepared by Timmons Gro Type II 24-hr 100-YR Rainfall=9.16" Summary for Pond 8P: BIORETENTION 2 [82] Warning: Early inflow requires earlier time span Printed 5/28/2021 Inflow Area = 2.360 ac, 58.05% Impervious, Inflow Depth > 6.53" for 100-YR event Inflow = 26.71 cfs @ 11.96 hrs, Volume= 1.285 of Outflow = 23.84 cfs @ 11.98 hrs, Volume= 1.156 af, Atten= 11%, Lag= 1.1 min Primary = 23.84 cfs @ 11.98 hrs, Volume= 1.156 of Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Peak Elev= 432.98' @ 12.00 hrs Surf.Area= 2,344 sf Storage= 7,858 cf Plug -Flow detention time= 58.7 min calculated for 1.152 of (90% of inflow) Center -of -Mass det. time= 24.6 min ( 780.4 - 755.8 ) Volume Invert Avail.Storage Storage Description #1 423.91' 10,323 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Voids Inc.Store Cum.Store (feet) (sq-ft) M (cubic -feet) (cubic -feet) 423.91 1,587 0.0 0 0 427.91 1,587 40.0 2,539 2,539 430.91 1,587 25.0 1,190 3,729 431.00 1,627 100.0 145 3,874 432.00 2,041 100.0 1,834 5,708 433.00 2,350 100.0 2,196 7,904 434.00 2,489 100.0 2,420 10,323 Device Routing Invert Outlet Devices #1 Primary 424.43' 18.0" Round HDPE_Round 18" L= 61.4' RCP, sq.cut end projecting, Ke= 0.500 Inlet / Outlet Invert= 424.43' / 423.82' S= 0.0099 '/' Cc= 0.900 n= 0.010 PVC, smooth interior, Flow Area= 1.77 sf #2 Device 1 431.91' 36.0" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads Primary OutFlow Max=23.68 cfs @ 11.98 hrs HW=432.93' (Free Discharge) t1=HDPE_Round 18" (Inlet Controls 23.68 cfs @ 13.40 fps) L2=Orifice/Grate (Passes 23.68 cfs of 31.62 cfs potential flow) 2021-05-27 Full Routing Prepared by Timmons Grc 28 26 24 22 20 18 u 16 c 14 LL 12 10 8 6 4 2 0 i c m m W Type 1124-hr 100-YR Rainfa&9.16" Printed 5/28/2021 Pond 8P: BIORETENTION 2 Hydrograph -ENIMME ------- MENIMME ...6�����.�. .�'�......�...... .....��..�.... �.... �..� �....� 12 13 14 15 16 17 18 19 5..7�.8.�9.�10120 Time (hours) Pond 813: BIORETENTION 2 Stage -Discharge 434 433 _.. ,. Orifice/Grate - 432 431 430- 429- .. ...... 428 ,_ ........_.. 427 426 425 HD 424 0 2 4 6 8 10 12 14 16 18 20 22 24 Discharge (de) ■ Inflow ■ Primary ❑ Primary 2021-05-27 Full Routing Prepared by Timmons Grc Type 1124-hr 100-YR Rainfa&9.16" Pond 8P: BIORETENTION 2 Stage -Area -Storage Storage (cubic -feet) Printed 5/28/2021 ■ Surface ■ Storage 2021-05-27 Full Routing Prepared by Timmons Gro Type II 24-hr 100-YR Rainfall=9.16" Hydrograph for Pond 8P: BIORETENTION 2 Time Inflow Storage Elevation Primary (hours) (cfs) (cubic -feet) (feet) (cfs) 5.00 0.04 3 423.92 0.00 5.50 0.06 88 424.05 0.00 6.00 0.08 215 424.25 0.00 6.50 0.11 386 424.52 0.00 7.00 0.13 604 424.86 0.00 7.50 0.16 871 425.28 0.00 8.00 0.19 1,189 425.78 0.00 8.50 0.25 1,582 426.40 0.00 9.00 0.33 2,107 427.23 0.00 9.50 0.37 2,750 428.44 0.00 10.00 0.49 3,509 430.35 0.00 10.50 0.68 4,545 431.39 0.00 11.00 1.00 5,722 432.01 0.95 11.50 1.78 5,817 432.05 1.71 12.00 24.94 7,854 432.98 23.76 12.50 2.20 5,888 432.09 2.32 13.00 1.34 5,776 432.03 1.38 13.50 1.02 5,733 432.01 1.04 14.00 0.80 5,706 432.00 0.82 14.50 0.70 5,689 431.99 0.71 15.00 0.63 5,678 431.99 0.64 15.50 0.56 5,665 431.98 0.57 16.00 0.49 5,648 431.97 0.50 16.50 0.46 5,638 431.97 0.46 17.00 0.43 5,632 431.96 0.43 17.50 0.40 5,626 431.96 0.41 18.00 0.38 5,619 431.96 0.38 18.50 0.35 5,613 431.95 0.36 19.00 0.33 5,607 431.95 0.33 19.50 0.30 5,601 431.95 0.31 20.00 0.28 5,594 431.94 0.28 Printed 5/28/2021 2021-05-27 Full Routing Prepared by Timmons Gro Elevation Primary (feet) (cfs) 423.91 0.00 423.97 0.00 424.03 0.00 424.09 0.00 424.15 0.00 424.21 0.00 424.27 0.00 424.33 0.00 424.39 0.00 424.45 0.00 424.51 0.00 424.57 0.00 424.63 0.00 424.69 0.00 424.75 0.00 424.81 0.00 424.87 0.00 424.93 0.00 424.99 0.00 425.05 0.00 425.11 0.00 425.17 0.00 425.23 0.00 425.29 0.00 425.35 0.00 425.41 0.00 425.47 0.00 425.53 0.00 425.59 0.00 425.65 0.00 425.71 0.00 425.77 0.00 425.83 0.00 425.89 0.00 425.95 0.00 426.01 0.00 426.07 0.00 426.13 0.00 426.19 0.00 426.25 0.00 426.31 0.00 426.37 0.00 426.43 0.00 426.49 0.00 426.55 0.00 426.61 0.00 426.67 0.00 426.73 0.00 426.79 0.00 426.85 0.00 426.91 0.00 426.97 0.00 Type 1124-hr 100-YR Rainfa&9.16" Stage -Discharge for Pond 8P: BIORETENTION 2 Elevation Primary (feet) (cfs) 427.03 0.00 427.09 0.00 427.15 0.00 427.21 0.00 427.27 0.00 427.33 0.00 427.39 0.00 427.45 0.00 427.51 0.00 427.57 0.00 427.63 0.00 427.69 0.00 427.75 0.00 427.81 0.00 427.87 0.00 427.93 0.00 427.99 0.00 428.05 0.00 428.11 0.00 428.17 0.00 428.23 0.00 428.29 0.00 428.35 0.00 428.41 0.00 428.47 0.00 428.53 0.00 428.59 0.00 428.65 0.00 428.71 0.00 428.77 0.00 428.83 0.00 428.89 0.00 428.95 0.00 429.01 0.00 429.07 0.00 429.13 0.00 429.19 0.00 429.25 0.00 429.31 0.00 429.37 0.00 429.43 0.00 429.49 0.00 429.55 0.00 429.61 0.00 429.67 0.00 429.73 0.00 429.79 0.00 429.85 0.00 429.91 0.00 429.97 0.00 430.03 0.00 430.09 0.00 Elevation Primary (feet) (cfs) 430.15 0.00 430.21 0.00 430.27 0.00 430.33 0.00 430.39 0.00 430.45 0.00 430.51 0.00 430.57 0.00 430.63 0.00 430.69 0.00 430.75 0.00 430.81 0.00 430.87 0.00 430.93 0.00 430.99 0.00 431.05 0.00 431.11 0.00 431.17 0.00 431.23 0.00 431.29 0.00 431.35 0.00 431.41 0.00 431.47 0.00 431.53 0.00 431.59 0.00 431.65 0.00 431.71 0.00 431.77 0.00 431.83 0.00 431.89 0.00 431.95 0.25 432.01 0.97 432.07 1.97 432.13 3.18 432.19 4.57 432.25 6.11 432.31 7.80 432.37 9.62 432.43 11.56 432.49 13.61 432.55 15.78 432.61 18.05 432.67 20.42 432.73 22.88 432.79 23.47 432.85 23.56 432.91 23.66 432.97 23.75 433.03 23.84 433.09 23.93 433.15 24.02 433.21 24.11 Printed 5/28/2021 Elevation Primary (feet) (cfs) 433.27 24.20 433.33 24.29 433.39 24.38 433.45 24.47 433.51 24.56 433.57 24.65 433.63 24.73 433.69 24.82 433.75 24.91 433.81 25.00 433.87 25.08 433.93 25.17 433.99 25.26 2021-05-27 Full Routing Prepared by Timmons Gro Type II 24-hr 100-YR Rainfall=9.16" Stage -Area -Storage for Pond 8P: BIORETENTION 2 Elevation Surface Storage (feet) (sq-ft) (cubic -feet) 423.91 1,587 0 424.06 1,587 95 424.21 1,587 190 424.36 1,587 286 424.51 1,587 381 424.66 1,587 476 424.81 1,587 571 424.96 1,587 667 425.11 1,587 762 425.26 1,587 857 425.41 1,587 952 425.56 1,587 1,047 425.71 1,587 1,143 425.86 1,587 1,238 426.01 1,587 1,333 426.16 1,587 1,428 426.31 1,587 1,524 426.46 1,587 1,619 426.61 1,587 1,714 426.76 1,587 1,809 426.91 1,587 1,904 427.06 1,587 2,000 427.21 1,587 2,095 427.36 1,587 2,190 427.51 1,587 2,285 427.66 1,587 2,381 427.81 1,587 2,476 427.96 1,587 2,559 428.11 1,587 2,619 428.26 1,587 2,678 428.41 1,587 2,738 428.56 1,587 2,797 428.71 1,587 2,857 428.86 1,587 2,916 429.01 1,587 2,976 429.16 1,587 3,035 429.31 1,587 3,095 429.46 1,587 3,154 429.61 1,587 3,214 429.76 1,587 3,273 429.91 1,587 3,333 430.06 1,587 3,392 430.21 1,587 3,452 430.36 1,587 3,511 430.51 1,587 3,571 430.66 1,587 3,630 430.81 1,587 3,690 430.96 1,609 3,809 431.11 1,673 4,056 431.26 1,735 4,311 431.41 1,797 4,576 431.56 1,859 4,850 Elevation Surface Storage (feet) (sq-ft) (cubic -feet) 431.71 1,921 5,134 431.86 1,983 5,426 432.01 2,044 5,729 432.16 2,090 6,039 432.31 2,137 6,356 432.46 2,183 6,680 432.61 2,229 7,011 432.76 2,276 7,348 432.91 2,322 7,693 433.06 2,358 8,045 433.21 2,379 8,400 433.36 2,400 8,759 433.51 2,421 9,120 433.66 2,442 9,485 433.81 2,463 9,853 433.96 2,483 10,224 Printed 5/28/2021 2021-05-27 Full Routing Prepared by Timmons Gro Type II 24-hr 100-YR Rainfall=9.16" Summary for Pond 10P: DRY POND [82] Warning: Early inflow requires earlier time span Printed 5/28/2021 Inflow Area = 7.010 ac, 60.49% Impervious, Inflow Depth > 6.65" for 100-YR event Inflow = 80.29 cfs @ 11.96 hrs, Volume= 3.884 of Outflow = 79.67 cfs @ 11.98 hrs, Volume= 3.541 af, Atten= 1 %, Lag= 0.8 min Primary = 79.67 cfs @ 11.98 hrs, Volume= 3.541 of Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Peak Elev= 425.49' @ 11.98 hrs Surf.Area= 6,147 sf Storage= 27,051 cf Plug -Flow detention time= 54.1 min calculated for 3.529 of (91% of inflow) Center -of -Mass det. time= 23.1 min ( 777.1 - 754.0 ) Volume Invert Avail.Storage Storage Description #1 418.00' 33,448 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic -feet) (cubic -feet) 418.00 1,082 0 0 419.00 1,611 1,347 1,347 420.00 2,218 1,915 3,261 421.00 2,905 2,562 5,823 422.00 3,711 3,308 9,131 423.00 4,590 4,151 13,281 424.00 5,526 5,058 18,339 424.10 5,622 557 18,896 425.00 5,935 5,201 24,097 426.00 6,368 6,152 30,249 426.50 6,431 3,200 33,448 Device Routino Invert Outlet Devices #1 Primary 417.90' 24.0" Round Culvert L= 117.9' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 417.90' / 417.01' S= 0.0075 '/' Cc= 0.900 n= 0.010 PVC, smooth interior, Flow Area= 3.14 sf #2 Device 1 418.00' 4.0" W x 4.2" H Vert. Orifice/Grate C= 0.600 #3 Device 1 423.92' 60.0" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #4 Primary 424.99' 45.0' long x 5.0' breadth Broad -Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 Primary OutFlow Max=76.81 cfs @ 11.98 hrs HW=425.47' (Free Discharge) 1_Cu lvert (Inlet Controls 38.76 cfs @ 12.34 fps) �2=Orifice/Grate (Passes < 1.52 cfs potential flow) 3=Orifice/Grate (Passes < 98.73 cfs potential flow) =Broad -Crested Rectangular Weir (Weir Controls 38.05 cfs @ 1.78 fps) 2021-05-27 Full Routing Prepared by Timmons Grc 42 42 42 42 c 0 m 42 W 42 42 41 41 0 Type 1124-hr 100-YR Rainfa&9.16" Printed 5/28/2021 LLC Page 97 Pond 10P: DRY POND Hydrograph Time (hours) Pond 10P: DRY POND Stage -Discharge 8 LU 4U UU aU lUU l[U 14U 1w laU LUU LLU 24U L(jU Discharge ids) ■ Irrflow ■ Primary 0 Primary 2021-05-27 Full Routing Prepared by Timmons Grc 42 42 42 j 42 c m 42 W 42 42 41 41 0 Type 1124-hr 100-YR Rainfa&9.16" Printed 5/28/2021 Pond 10P: DRY POND Stage -Area -Storage Surface/Horizontal/Wetted Area (sq-ft) n Mn 1 nnn 1 5nn 9 nnn 2 5nn s nnn a 5nn 4 nnn 4 5nn 5 nnn 5 5nn a nnn ENINEINNINEP ■■I��I■■IP-M/ NINE r III■/..I■I■■1■■1■■ Custom Stage Data Z—A 5,000 10,000 15,000 20,000 25,000 30,000 Storage (cubic -feet) ■ Surface ■ Storage 2021-05-27 Full Routing Prepared by Timmons Gro Type II 24-hr 100-YR Rainfall=9.16" Hydrograph for Pond 10P: DRY POND Time Inflow Storage Elevation Primary (hours) (cfs) (cubic -feet) (feet) (cfs) 5.00 0.14 12 418.01 0.00 5.50 0.21 237 418.21 0.10 6.00 0.28 393 418.34 0.21 6.50 0.36 526 418.44 0.28 7.00 0.44 684 418.56 0.34 7.50 0.53 881 418.70 0.40 8.00 0.61 1,124 418.86 0.46 8.50 0.80 1,484 419.08 0.53 9.00 1.05 2,099 419.43 0.63 9.50 1.17 2,898 419.83 0.72 10.00 1.51 3,888 420.27 0.81 10.50 2.10 5,541 420.90 0.93 11.00 3.09 8,354 421.79 1.07 11.50 5.43 13,726 423.10 1.25 12.00 74.91 26,933 425.47 77.43 12.50 6.57 19,183 424.15 7.14 13.00 4.02 18,689 424.06 4.19 13.50 3.04 18,484 424.03 3.15 14.00 2.39 18,326 424.00 2.48 14.50 2.10 18,224 423.98 2.14 15.00 1.89 18,159 423.97 1.93 15.50 1.68 18,093 423.96 1.71 16.00 1.46 18,010 423.94 1.53 16.50 1.36 17,927 423.92 1.39 17.00 1.28 17,863 423.91 1.35 17.50 1.21 17,688 423.88 1.34 18.00 1.13 17,384 423.82 1.34 18.50 1.05 16,956 423.74 1.33 19.00 0.98 16,410 423.64 1.31 19.50 0.90 15,750 423.51 1.30 20.00 0.82 14,982 423.36 1.28 Printed 5/28/2021 2021-05-27 Full Routing Prepared by Timmons Gro Elevation Primary (feet) (cfs) 418.00 0.00 418.10 0.03 418.20 0.10 418.30 0.18 418.40 0.26 418.50 0.32 418.60 0.36 418.70 0.41 418.80 0.44 418.90 0.48 419.00 0.51 419.10 0.54 419.20 0.57 419.30 0.60 419.40 0.62 419.50 0.65 419.60 0.67 419.70 0.69 419.80 0.72 419.90 0.74 420.00 0.76 420.10 0.78 420.20 0.80 420.30 0.82 420.40 0.84 420.50 0.86 420.60 0.87 420.70 0.89 420.80 0.91 420.90 0.93 421.00 0.94 421.10 0.96 421.20 0.98 421.30 0.99 421.40 1.01 421.50 1.02 421.60 1.04 421.70 1.05 421.80 1.07 421.90 1.08 422.00 1.10 422.10 1.11 422.20 1.13 422.30 1.14 422.40 1.15 422.50 1.17 422.60 1.18 422.70 1.19 422.80 1.21 422.90 1.22 423.00 1.23 423.10 1.25 Type II 24-hr 100-YR Rainfall=9.16" Stage -Discharge for Pond 10P: DRY POND Elevation Primary (feet) (cfs) 423.20 1.26 423.30 1.27 423.40 1.28 423.50 1.30 423.60 1.31 423.70 1.32 423.80 1.33 423.90 1.34 424.00 2.52 424.10 5.29 424.20 8.99 424.30 13.42 424.40 18.48 424.50 24.10 424.60 30.23 424.70 36.43 424.80 36.74 424.90 37.05 425.00 37.47 425.10 41.51 425.20 48.14 425.30 57.13 425.40 68.22 425.50 81.64 425.60 97.02 425.70 111.84 425.80 127.65 425.90 144.71 426.00 162.67 426.10 181.05 426.20 200.16 426.30 220.25 426.40 241.08 426.50 262.97 Printed 5/28/2021 2021-05-27 Full Routing Prepared by Timmons Gro Type II 24-hr 100-YR Rainfall=9.16" Stage -Area -Storage for Pond 10P: DRY POND Elevation Surface Storage (feet) (sq-ft) (cubic -feet) 418.00 1,082 0 418.10 1,135 ill 418.20 1,188 227 418.30 1,241 348 418.40 1,294 475 418.50 1,347 607 418.60 1,399 744 418.70 1,452 887 418.80 1,505 1,035 418.90 1,558 1,188 419.00 1,611 1,347 419.10 1,672 1,511 419.20 1,732 1,681 419.30 1,793 1,857 419.40 1,854 2,039 419.50 1,915 2,228 419.60 1,975 2,422 419.70 2,036 2,623 419.80 2,097 2,830 419.90 2,157 3,042 420.00 2,218 3,261 420.10 2,287 3,486 420.20 2,355 3,718 420.30 2,424 3,957 420.40 2,493 4,203 420.50 2,562 4,456 420.60 2,630 4,715 420.70 2,699 4,982 420.80 2,768 5,255 420.90 2,836 5,535 421.00 2,905 5,823 421.10 2,986 6,117 421.20 3,066 6,420 421.30 3,147 6,730 421.40 3,227 7,049 421.50 3,308 7,376 421.60 3,389 7,711 421.70 3,469 8,053 421.80 3,550 8,404 421.90 3,630 8,763 422.00 3,711 9,131 422.10 3,799 9,506 422.20 3,887 9,890 422.30 3,975 10,283 422.40 4,063 10,685 422.50 4,151 11,096 422.60 4,238 11,515 422.70 4,326 11,944 422.80 4,414 12,381 422.90 4,502 12,826 423.00 4,590 13,281 423.10 4,684 13,745 Elevation Surface Storage (feet) (sq-ft) (cubic -feet) 423.20 4,777 14,218 423.30 4,871 14,700 423.40 4,964 15,192 423.50 5,058 15,693 423.60 5,152 16,203 423.70 5,245 16,723 423.80 5,339 17,253 423.90 5,432 17,791 424.00 5,526 18,339 424.10 5,622 18,896 424.20 5,657 19,460 424.30 5,692 20,028 424.40 5,726 20,599 424.50 5,761 21,173 424.60 5,796 21,751 424.70 5,831 22,332 424.80 5,865 22,917 424.90 5,900 23,505 425.00 5,935 24,097 425.10 5,978 24,693 425.20 6,022 25,293 425.30 6,065 25,897 425.40 6,108 26,506 425.50 6,152 27,119 425.60 6,195 27,736 425.70 6,238 28,358 425.80 6,281 28,984 425.90 6,325 29,614 426.00 6,368 30,249 426.10 6,381 30,886 426.20 6,393 31,525 426.30 6,406 32,165 426.40 6,418 32,806 426.50 6,431 33,448 Printed 5/28/2021 2021-05-27 Full Routing Prepared by Timmons Gro Type II 24-hr 100-YR Rainfall=9.16" Printed 5/28/2021 Summary for Link 13L: POST Combined Inflow Area = 16.300 ac, 55.03% Impervious, Inflow Depth > 5.81" for 100-YR event Inflow = 178.03 cfs @ 11.98 hrs, Volume= 7.887 of Primary = 178.03 cfs @ 11.98 hrs, Volume= 7.887 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Link 13L: POST Combined Hydrograph ■ IuMow ■ Primary Time (hours) 2021-05-27 Full Routing Prepared by Timmons Gro Type II 24-hr 100-YR Rainfall=9.16" Hydrograph for Link 13L: POST Combined Time Inflow Elevation Primary (hours) (cfs) (feet) (cfs) 5.00 0.00 0.00 0.00 5.25 0.05 0.00 0.05 5.50 0.10 0.00 0.10 5.75 0.16 0.00 0.16 6.00 0.21 0.00 0.21 6.25 0.25 0.00 0.25 6.50 0.28 0.00 0.28 6.75 0.31 0.00 0.31 7.00 0.34 0.00 0.34 7.25 0.37 0.00 0.37 7.50 0.40 0.00 0.40 7.75 0.44 0.00 0.44 8.00 0.47 0.00 0.47 8.25 0.51 0.00 0.51 8.50 0.55 0.00 0.55 8.75 0.61 0.00 0.61 9.00 0.66 0.00 0.66 9.25 0.72 0.00 0.72 9.50 0.77 0.00 0.77 9.75 0.82 0.00 0.82 10.00 0.89 0.00 0.89 10.25 0.96 0.00 0.96 10.50 1.05 0.00 1.05 10.75 1.15 0.00 1.15 11.00 1.27 0.00 1.27 11.25 5.59 0.00 5.59 11.50 7.43 0.00 7.43 11.75 47.07 0.00 47.07 12.00 172.81 0.00 172.81 12.25 26.00 0.00 26.00 12.50 16.29 0.00 16.29 12.75 11.38 0.00 11.38 13.00 9.53 0.00 9.53 13.25 8.14 0.00 8.14 13.50 7.18 0.00 7.18 13.75 6.33 0.00 6.33 14.00 5.64 0.00 5.64 14.25 5.14 0.00 5.14 14.50 4.88 0.00 4.88 14.75 4.64 0.00 4.64 15.00 4.40 0.00 4.40 15.25 4.15 0.00 4.15 15.50 3.91 0.00 3.91 15.75 3.67 0.00 3.67 16.00 3.45 0.00 3.45 16.25 3.26 0.00 3.26 16.50 3.16 0.00 3.16 16.75 3.07 0.00 3.07 17.00 3.02 0.00 3.02 17.25 2.97 0.00 2.97 17.50 2.92 0.00 2.92 17.75 2.86 0.00 2.86 Time Inflow Elevation Primary (hours) (cfs) (feet) (cfs) 18.00 2.81 0.00 2.81 18.25 2.76 0.00 2.76 18.50 2.71 0.00 2.71 18.75 2.66 0.00 2.66 19.00 2.60 0.00 2.60 19.25 2.54 0.00 2.54 19.50 2.48 0.00 2.48 19.75 2.43 0.00 2.43 20.00 2.37 0.00 2.37 Printed 5/28/2021 11S 9S Onsile .routed 4 5S To Dry Po 10 Offsite T Bior DRY P NO etenlion 1 4S 7S Onsi To Bioretention 1 1 S PRE site To Bioro ntion 2 2S v 6P / 8P /Pre Onsite BIORETENTION 1 CCCSSS BIORETENTION 2 13L 3L POST Combine PRE Combined 12S Onsite Unrouted 5 Subcat Reach Aon Llnk 2021-03-11 Full Routing Prepared by Timmons Gro Type 1124-hr 1-YR Rainfall=3.05" Summary for Subcatchment 1S: PRE Onsite Runoff = 7.33 cfs @ 12.00 hrs, Volume= 0.398 af, Depth> 0.33" Printed 3/11/2021 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 0.210 98 Paved parking, HSG B 0.000 61 >75% Grass cover, Good, HSG B 14.350 60 Woods, Fair, HSG B 14.560 61 Weighted Average 14.350 98.56% Pervious Area 0.210 1.44% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 1S: PRE Onsite Hydrograph ■ Rurwff Time (hours) 2021-03-11 Full Routing Prepared by Timmons Gro Type 1124-hr 1-YR Rainfall=3.05" Hydrograph for Subcatchment 1S: PRE Onsite Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 5.00 0.19 0.00 0.00 5.25 0.20 0.00 0.00 5.50 0.22 0.00 0.00 5.75 0.23 0.00 0.00 6.00 0.24 0.00 0.00 6.25 0.26 0.00 0.00 6.50 0.27 0.00 0.00 6.75 0.29 0.00 0.00 7.00 0.30 0.00 0.00 7.25 0.32 0.00 0.00 7.50 0.33 0.00 0.00 7.75 0.35 0.00 0.00 8.00 0.37 0.00 0.00 8.25 0.38 0.00 0.00 8.50 0.40 0.00 0.00 8.75 0.42 0.00 0.00 9.00 0.45 0.00 0.00 9.25 0.47 0.00 0.00 9.50 0.50 0.00 0.00 9.75 0.52 0.00 0.00 10.00 0.55 0.00 0.00 10.25 0.58 0.00 0.00 10.50 0.62 0.00 0.00 10.75 0.67 0.00 0.00 11.00 0.72 0.00 0.00 11.25 0.78 0.00 0.00 11.50 0.86 0.00 0.00 11.75 1.18 0.00 0.00 12.00 2.02 0.08 7.33 12.25 2.15 0.11 1.63 12.50 2.24 0.13 1.15 12.75 2.30 0.14 0.89 13.00 2.35 0.15 0.78 13.25 2.40 0.17 0.69 13.50 2.44 0.18 0.62 13.75 2.47 0.19 0.56 14.00 2.50 0.20 0.51 14.25 2.53 0.20 0.48 14.50 2.55 0.21 0.46 14.75 2.58 0.22 0.45 15.00 2.60 0.23 0.43 15.25 2.63 0.23 0.41 15.50 2.65 0.24 0.39 15.75 2.67 0.25 0.37 16.00 2.68 0.25 0.35 16.25 2.70 0.26 0.33 16.50 2.72 0.26 0.33 16.75 2.73 0.27 0.32 17.00 2.75 0.28 0.31 17.25 2.77 0.28 0.31 17.50 2.78 0.29 0.30 17.75 2.80 0.29 0.29 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 18.00 2.81 0.30 0.28 18.25 2.82 0.30 0.28 18.50 2.84 0.30 0.27 18.75 2.85 0.31 0.26 19.00 2.86 0.31 0.25 19.25 2.87 0.32 0.24 19.50 2.88 0.32 0.23 19.75 2.89 0.33 0.22 20.00 2.90 0.33 0.22 Printed 3/11/2021 2021-03-11 Full Routing Type 1124-hr 1-YR Rainfall=3.05" Prepared by Timmons Group Printed 3/11/2021 Summary for Subcatchment 2S: Pre Offsite Runoff = 2.30 cfs @ 11.98 hrs, Volume= 0.101 af, Depth> 0.80" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24-hr 1-YR Rainfall=3.05 Area (ac) CN 0.510 98 Paved parking, HSG B 0.000 61 >75% Grass cover, Good, HSG B 1.010 60 Woods, Fair, HSG B 1.520 73 Weighted Average 1.010 66.45% Pervious Area 0.510 33.55% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 2S: Pre Offsite Hydrograph ■ Rurwff Type II 24-hr 1-YR Rainfall=3.05r� Runoff Area=1.520 ac Runoff Volume=0.101 of Runoff Depth>0.80" i.0 min CN=j73 12 13 14 15 16 17 18 19 20 Time (hours) 2021-03-11 Full Routing Prepared by Timmons Gro Type 1124-hr 1-YR Rainfall=3.05" Hydrograph for Subcatchment 2S: Pre Mite Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 5.00 0.19 0.00 0.00 5.25 0.20 0.00 0.00 5.50 0.22 0.00 0.00 5.75 0.23 0.00 0.00 6.00 0.24 0.00 0.00 6.25 0.26 0.00 0.00 6.50 0.27 0.00 0.00 6.75 0.29 0.00 0.00 7.00 0.30 0.00 0.00 7.25 0.32 0.00 0.00 7.50 0.33 0.00 0.00 7.75 0.35 0.00 0.00 8.00 0.37 0.00 0.00 8.25 0.38 0.00 0.00 8.50 0.40 0.00 0.00 8.75 0.42 0.00 0.00 9.00 0.45 0.00 0.00 9.25 0.47 0.00 0.00 9.50 0.50 0.00 0.00 9.75 0.52 0.00 0.00 10.00 0.55 0.00 0.00 10.25 0.58 0.00 0.00 10.50 0.62 0.00 0.00 10.75 0.67 0.00 0.00 11.00 0.72 0.00 0.00 11.25 0.78 0.00 0.00 11.50 0.86 0.00 0.02 11.75 1.18 0.05 0.32 12.00 2.02 0.33 2.25 12.25 2.15 0.39 0.37 12.50 2.24 0.43 0.25 12.75 2.30 0.46 0.18 13.00 2.35 0.49 0.16 13.25 2.40 0.51 0.14 13.50 2.44 0.53 0.12 13.75 2.47 0.55 0.11 14.00 2.50 0.57 0.10 14.25 2.53 0.58 0.09 14.50 2.55 0.60 0.09 14.75 2.58 0.61 0.08 15.00 2.60 0.62 0.08 15.25 2.63 0.64 0.08 15.50 2.65 0.65 0.07 15.75 2.67 0.66 0.07 16.00 2.68 0.67 0.06 16.25 2.70 0.68 0.06 16.50 2.72 0.69 0.06 16.75 2.73 0.70 0.06 17.00 2.75 0.71 0.06 17.25 2.77 0.72 0.05 17.50 2.78 0.73 0.05 17.75 2.80 0.73 0.05 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 18.00 2.81 0.74 0.05 18.25 2.82 0.75 0.05 18.50 2.84 0.76 0.05 18.75 2.85 0.77 0.05 19.00 2.86 0.77 0.04 19.25 2.87 0.78 0.04 19.50 2.88 0.79 0.04 19.75 2.89 0.79 0.04 20.00 2.90 0.80 0.04 Printed 3/11/2021 2021-03-11 Full Routing Prepared by Timmons Gro Type 1124-hr 1-YR Rainfall=3.05" Printed 3/11/2021 Summary for Subcatchment 4S: Onsite To Bioretention 1 Runoff = 11.09 cfs @ 11.97 hrs, Volume= 0.493 af, Depth> 1.37" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24-hr 1-YR Rainfall=3.05 Area (ac) CN Description 2.640 98 Paved parking, HSG B 1.430 61 >75% Grass cover, Good, HSG B 0.260 60 Woods, Fair, HSG B 4.330 83 Weighted Average 1.690 39.03% Pervious Area 2.640 60.97% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, 3 LL Subcatchment 4S: Onsite To Bioretention 1 Hydrograph Now MMM MMMMMMM It / tl V lu 11 11 13 14 15 lb I 18 19 zu Time (hours) ■ Rurwff 2021-03-11 Full Routing Prepared by Timmons Gro 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 0.01 9.25 0.47 0.00 0.02 9.50 0.50 0.00 0.03 9.75 0.52 0.01 0.04 10.00 0.55 0.01 0.06 10.25 0.58 0.01 0.08 10.50 0.62 0.02 0.11 10.75 0.67 0.03 0.15 11.00 0.72 0.04 0.21 11.25 0.78 0.06 0.31 11.50 0.86 0.08 0.46 11.75 1.18 0.21 2.70 12.00 2.02 0.71 10.66 12.25 2.15 0.80 1.57 12.50 2.24 0.87 1.03 12.75 2.30 0.91 0.76 13.00 2.35 0.95 0.64 13.25 2.40 0.98 0.56 13.50 2.44 1.01 0.49 13.75 2.47 1.03 0.44 14.00 2.50 1.06 0.39 14.25 2.53 1.08 0.36 14.50 2.55 1.10 0.35 14.75 2.58 1.12 0.33 15.00 2.60 1.13 0.31 15.25 2.63 1.15 0.30 15.50 2.65 1.17 0.28 15.75 2.67 1.18 0.26 16.00 2.68 1.20 0.24 16.25 2.70 1.21 0.23 16.50 2.72 1.22 0.23 16.75 2.73 1.24 0.22 17.00 2.75 1.25 0.22 17.25 2.77 1.26 0.21 17.50 2.78 1.27 0.20 17.75 2.80 1.28 0.20 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 18.00 2.81 1.29 0.19 18.25 2.82 1.31 0.18 18.50 2.84 1.32 0.18 18.75 2.85 1.33 0.17 19.00 2.86 1.33 0.17 19.25 2.87 1.34 0.16 19.50 2.88 1.35 0.15 19.75 2.89 1.36 0.15 20.00 2.90 1.37 0.14 Printed 3/11/2021 2021-03-11 Full Routing Prepared by Timmons Gro Type 1124-hr 1-YR Rainfall=3.05" Summary for Subcatchment 5S: Mite To Bioretention 1 Runoff = 2.30 cfs @ 11.98 hrs, Volume= 0.101 af, Depth> 0.80" Printed 3/11/2021 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 0.510 98 Paved parking, HSG B 0.000 61 >75% Grass cover, Good, HSG B 1.010 60 Woods, Fair, HSG B 1.520 73 Weighted Average 1.010 66.45% Pervious Area 0.510 33.55% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 5S: Mite To Bioretention 1 Hydrograph ■ Rurwff Type II 24-hr 1-YR Rainfall=3.05r� Runoff Area=1.520 ac Runoff Volume=0.101 of Runoff Depth>0.80" i.0 min CN=j73 12 13 14 15 16 17 18 19 20 Time (hours) 2021-03-11 Full Routing Prepared by Timmons Gro 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 0.00 11.50 0.86 0.00 0.02 11.75 1.18 0.05 0.32 12.00 2.02 0.33 2.25 12.25 2.15 0.39 0.37 12.50 2.24 0.43 0.25 12.75 2.30 0.46 0.18 13.00 2.35 0.49 0.16 13.25 2.40 0.51 0.14 13.50 2.44 0.53 0.12 13.75 2.47 0.55 0.11 14.00 2.50 0.57 0.10 14.25 2.53 0.58 0.09 14.50 2.55 0.60 0.09 14.75 2.58 0.61 0.08 15.00 2.60 0.62 0.08 15.25 2.63 0.64 0.08 15.50 2.65 0.65 0.07 15.75 2.67 0.66 0.07 16.00 2.68 0.67 0.06 16.25 2.70 0.68 0.06 16.50 2.72 0.69 0.06 16.75 2.73 0.70 0.06 17.00 2.75 0.71 0.06 17.25 2.77 0.72 0.05 17.50 2.78 0.73 0.05 17.75 2.80 0.73 0.05 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 18.00 2.81 0.74 0.05 18.25 2.82 0.75 0.05 18.50 2.84 0.76 0.05 18.75 2.85 0.77 0.05 19.00 2.86 0.77 0.04 19.25 2.87 0.78 0.04 19.50 2.88 0.79 0.04 19.75 2.89 0.79 0.04 20.00 2.90 0.80 0.04 Printed 3/11/2021 2021-03-11 Full Routing Prepared by Timmons Gro Type 1124-hr 1-YR Rainfall=3.05" Summary for Subcatchment 7S: To Bioretention 2 Runoff = 4.48 cfs @ 11.97 hrs, Volume= 0.198 af, Depth> 1.24" Printed 3/11/2021 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 1.040 98 Paved parking, HSG B 0.840 61 >75% Grass cover, Good, HSG B 0.040 60 Woods, Fair, HSG B 1.920 81 Weighted Average 0.880 45.83% Pervious Area 1.040 54.17% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 7S: To Bioretention 2 Hydrograph ■ Runoff Time (hours) 2021-03-11 Full Routing Prepared by Timmons Gro 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 0.00 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 0.01 10.00 0.55 0.00 0.01 10.25 0.58 0.01 0.02 10.50 0.62 0.01 0.03 10.75 0.67 0.02 0.05 11.00 0.72 0.02 0.07 11.25 0.78 0.04 0.11 11.50 0.86 0.06 0.16 11.75 1.18 0.17 1.01 12.00 2.02 0.62 4.33 12.25 2.15 0.70 0.65 12.50 2.24 0.76 0.43 12.75 2.30 0.80 0.32 13.00 2.35 0.84 0.27 13.25 2.40 0.87 0.23 13.50 2.44 0.90 0.21 13.75 2.47 0.92 0.18 14.00 2.50 0.94 0.16 14.25 2.53 0.96 0.15 14.50 2.55 0.98 0.14 14.75 2.58 1.00 0.14 15.00 2.60 1.02 0.13 15.25 2.63 1.03 0.12 15.50 2.65 1.05 0.12 15.75 2.67 1.06 0.11 16.00 2.68 1.08 0.10 16.25 2.70 1.09 0.10 16.50 2.72 1.10 0.10 16.75 2.73 1.11 0.09 17.00 2.75 1.12 0.09 17.25 2.77 1.14 0.09 17.50 2.78 1.15 0.09 17.75 2.80 1.16 0.08 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 18.00 2.81 1.17 0.08 18.25 2.82 1.18 0.08 18.50 2.84 1.19 0.08 18.75 2.85 1.20 0.07 19.00 2.86 1.21 0.07 19.25 2.87 1.22 0.07 19.50 2.88 1.22 0.06 19.75 2.89 1.23 0.06 20.00 2.90 1.24 0.06 Printed 3/11/2021 2021-03-11 Full Routing Prepared by Timmons Gro Type 1124-hr 1-YR Rainfall=3.05" Summary for Subcatchment 9S: To Dry Pond Runoff = 17.96 cfs @ 11.97 hrs, Volume= 0.799 af, Depth> 1.37" Printed 3/11/2021 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 4.240 98 Paved parking, HSG B 2.770 61 >75% Grass cover, Good, HSG B 0.000 60 Woods, Fair, HSG B 7.010 83 Weighted Average 2.770 39.51 % Pervious Area 4.240 60.49% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 9S: To Dry Pond Hydrograph FA _M M_MMMMM _____ _MMM M_MMMMM ___MW''�'IMM ____ ® ___K"UMZ&iUM ______ �_�_�_�_�_�_■ �L►1:LJ111JC11'WJb�L�JC.I■ /______� Time (hours) ■ Runoff 2021-03-11 Full Routing Prepared by Timmons Gro Type 1124-hr 1-YR Rainfall=3.05" Hydrograph for Subcatchment 9S: To Dry Pond Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 5.00 0.19 0.00 0.00 5.25 0.20 0.00 0.00 5.50 0.22 0.00 0.00 5.75 0.23 0.00 0.00 6.00 0.24 0.00 0.00 6.25 0.26 0.00 0.00 6.50 0.27 0.00 0.00 6.75 0.29 0.00 0.00 7.00 0.30 0.00 0.00 7.25 0.32 0.00 0.00 7.50 0.33 0.00 0.00 7.75 0.35 0.00 0.00 8.00 0.37 0.00 0.00 8.25 0.38 0.00 0.00 8.50 0.40 0.00 0.00 8.75 0.42 0.00 0.00 9.00 0.45 0.00 0.02 9.25 0.47 0.00 0.04 9.50 0.50 0.00 0.05 9.75 0.52 0.01 0.07 10.00 0.55 0.01 0.10 10.25 0.58 0.01 0.13 10.50 0.62 0.02 0.18 10.75 0.67 0.03 0.25 11.00 0.72 0.04 0.34 11.25 0.78 0.06 0.50 11.50 0.86 0.08 0.75 11.75 1.18 0.21 4.37 12.00 2.02 0.71 17.26 12.25 2.15 0.80 2.55 12.50 2.24 0.87 1.67 12.75 2.30 0.91 1.24 13.00 2.35 0.95 1.04 13.25 2.40 0.98 0.90 13.50 2.44 1.01 0.80 13.75 2.47 1.03 0.71 14.00 2.50 1.06 0.63 14.25 2.53 1.08 0.59 14.50 2.55 1.10 0.56 14.75 2.58 1.12 0.53 15.00 2.60 1.13 0.51 15.25 2.63 1.15 0.48 15.50 2.65 1.17 0.45 15.75 2.67 1.18 0.42 16.00 2.68 1.20 0.40 16.25 2.70 1.21 0.38 16.50 2.72 1.22 0.37 16.75 2.73 1.24 0.36 17.00 2.75 1.25 0.35 17.25 2.77 1.26 0.34 17.50 2.78 1.27 0.33 17.75 2.80 1.28 0.32 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 18.00 2.81 1.29 0.31 18.25 2.82 1.31 0.30 18.50 2.84 1.32 0.29 18.75 2.85 1.33 0.28 19.00 2.86 1.33 0.27 19.25 2.87 1.34 0.26 19.50 2.88 1.35 0.25 19.75 2.89 1.36 0.24 20.00 2.90 1.37 0.23 Printed 3/11/2021 2021-03-11 Full Routing Prepared by Timmons Gro Type 1124-hr 1-YR Rainfall=3.05" Summary for Subcatchment 11S: Onsite Unrouted 4 Runoff = 0.61 cfs @ 11.99 hrs, Volume= 0.028 af, Depth> 0.54" Printed 3/11/2021 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 0.110 98 Paved parking, HSG B 0.380 61 >75% Grass cover, Good, HSG B 0.140 60 Woods, Fair, HSG B 0.630 67 Weighted Average 0.520 82.54% Pervious Area 0.110 17.46% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 11S: Onsite Unrouted 4 Hydrograph ■ Rurwff Time (hours) 2021-03-11 Full Routing Prepared by Timmons Gro Type 1124-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 0.02 12.00 2.02 0.18 0.61 12.25 2.15 0.22 0.11 12.50 2.24 0.26 0.08 12.75 2.30 0.28 0.06 13.00 2.35 0.30 0.05 13.25 2.40 0.32 0.04 13.50 2.44 0.33 0.04 13.75 2.47 0.34 0.03 14.00 2.50 0.36 0.03 14.25 2.53 0.37 0.03 14.50 2.55 0.38 0.03 14.75 2.58 0.39 0.03 15.00 2.60 0.40 0.03 15.25 2.63 0.41 0.02 15.50 2.65 0.42 0.02 15.75 2.67 0.43 0.02 16.00 2.68 0.44 0.02 16.25 2.70 0.44 0.02 16.50 2.72 0.45 0.02 16.75 2.73 0.46 0.02 17.00 2.75 0.47 0.02 17.25 2.77 0.47 0.02 17.50 2.78 0.48 0.02 17.75 2.80 0.49 0.02 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 18.00 2.81 0.49 0.02 18.25 2.82 0.50 0.02 18.50 2.84 0.51 0.02 18.75 2.85 0.51 0.01 19.00 2.86 0.52 0.01 19.25 2.87 0.52 0.01 19.50 2.88 0.53 0.01 19.75 2.89 0.53 0.01 20.00 2.90 0.54 0.01 Printed 3/11/2021 2021-03-11 Full Routing Prepared by Timmons Gro Type 1124-hr 1-YR Rainfall=3.05" Summary for Subcatchment 12S: Onsite Unrouted 5 Runoff = 1.98 cfs @ 11.97 hrs, Volume= 0.088 af, Depth> 1.30" Printed 3/11/2021 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 0.460 98 Paved parking, HSG B 0.310 61 >75% Grass cover, Good, HSG B 0.040 60 Woods, Fair, HSG B 0.810 82 Weighted Average 0.350 43.21 % Pervious Area 0.460 56.79% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 12S: Onsite Unrouted 5 Hydrograph ❑ RunoH Time (hours) 2021-03-11 Full Routing Prepared by Timmons Gro Type 1124-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 0.01 10.00 0.55 0.01 0.01 10.25 0.58 0.01 0.01 10.50 0.62 0.01 0.02 10.75 0.67 0.02 0.02 11.00 0.72 0.03 0.03 11.25 0.78 0.05 0.05 11.50 0.86 0.07 0.08 11.75 1.18 0.19 0.47 12.00 2.02 0.66 1.91 12.25 2.15 0.75 0.28 12.50 2.24 0.81 0.19 12.75 2.30 0.86 0.14 13.00 2.35 0.89 0.12 13.25 2.40 0.92 0.10 13.50 2.44 0.95 0.09 13.75 2.47 0.98 0.08 14.00 2.50 1.00 0.07 14.25 2.53 1.02 0.07 14.50 2.55 1.04 0.06 14.75 2.58 1.06 0.06 15.00 2.60 1.07 0.06 15.25 2.63 1.09 0.05 15.50 2.65 1.11 0.05 15.75 2.67 1.12 0.05 16.00 2.68 1.14 0.04 16.25 2.70 1.15 0.04 16.50 2.72 1.16 0.04 16.75 2.73 1.17 0.04 17.00 2.75 1.19 0.04 17.25 2.77 1.20 0.04 17.50 2.78 1.21 0.04 17.75 2.80 1.22 0.04 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 18.00 2.81 1.23 0.03 18.25 2.82 1.24 0.03 18.50 2.84 1.25 0.03 18.75 2.85 1.26 0.03 19.00 2.86 1.27 0.03 19.25 2.87 1.28 0.03 19.50 2.88 1.29 0.03 19.75 2.89 1.30 0.03 20.00 2.90 1.30 0.03 Printed 3/11/2021 2021-03-11 Full Routing Prepared by Timmons Gro Type 1124-hr 1-YR Rainfall=3.05" Summary for Pond 6P: BIORETENTION 1 Printed 3/11/2021 Inflow Area = 5.850 ac, 53.85% Impervious, Inflow Depth > 1.22" for 1-YR event Inflow = 13.48 cfs @ 11.98 hrs, Volume= 0.594 of Outflow = 1.71 cfs @ 12.34 hrs, Volume= 0.284 af, Atten= 87%, Lag= 22.0 min Primary = 1.71 cfs @ 12.34 hrs, Volume= 0.284 of Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Peak Elev= 415.10' @ 12.34 hrs Surf.Area= 5,317 sf Storage= 13,966 cf Plug -Flow detention time= 178.1 min calculated for 0.284 of (48% of inflow) Center -of -Mass det. time= 93.9 min ( 887.2 - 793.3 ) Volume Invert Avail.Storage Storage Description #1 407.00' 30,851 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 19,325 417.50 8,772 100.0 11,526 30,851 Device Routing Invert Outlet Devices #1 Primary 409.71' 36.0" Round HDPE_Round 36" L= 47.6' RCP, sq.cut end projecting, Ke= 0.500 Inlet / Outlet Invert= 409.71' / 409.00' S= 0.0149 '/' Cc= 0.900 n= 0.010 PVC, smooth interior, Flow Area= 7.07 sf #2 Device 1 415.00' 60.0" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #3 Primary 415.85' 15.0' long x 1.0' breadth Broad -Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 Coef. (English) 2.69 2.72 2.75 2.85 2.98 3.08 3.20 3.28 3.31 3.30 3.31 3.32 Primary OutFlow Max=1.62 cfs @ 12.34 hrs HW=415.10' (Free Discharge) 11=HDPE Round 36" (Passes 1.62 cfs of 67.13 cfs potential flow) t2=Orifice/Grate (Weir Controls 1.62 cfs @ 1.03 fps) 3=Broad-Crested Rectangular Weir ( Controls 0.00 cfs) 2021-03-11 Full Routing Prepared by Timmons Grc i c 0 A d W Pond 6P: BIORETENTION 1 Hydrograph Time (hours) Pond 6P: BIORETENTION 1 Stage -Discharge Discharge (ds) Type ll 24-hr 1-YR Rainfall=3.05" Printed 3/11/2021 ■ Inflow ■ Primary ❑ Primary 2021-03-11 Full Routing Prepared by Timmons Grc Pond 6P: BIORETENTION 1 Stage -Area -Storage Storage (cubic -feet) Type ll 24-hr 1-YR Rainfall=3.05" Printed 3/11/2021 ■ Surface ■ Storage 2021-03-11 Full Routing Prepared by Timmons Gro 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 0.01 7 407.00 0.00 9.50 0.03 46 407.03 0.00 10.00 0.06 125 407.08 0.00 10.50 0.11 275 407.18 0.00 11.00 0.21 557 407.37 0.00 11.50 0.49 1,143 407.75 0.00 12.00 12.91 9,654 414.18 0.00 12.50 1.28 13,911 415.09 1.41 13.00 0.80 13,741 415.06 0.86 13.50 0.61 13,666 415.04 0.65 14.00 0.49 13,619 415.03 0.51 14.50 0.43 13,594 415.03 0.44 15.00 0.39 13,580 415.03 0.40 15.50 0.35 13,565 415.02 0.36 16.00 0.31 13,550 415.02 0.32 16.50 0.29 13,541 415.02 0.29 17.00 0.27 13,536 415.02 0.27 17.50 0.26 13,531 415.02 0.26 18.00 0.24 13,525 415.02 0.24 18.50 0.23 13,520 415.02 0.23 19.00 0.21 13,514 415.01 0.21 19.50 0.19 13,509 415.01 0.20 20.00 0.18 13,503 415.01 0.18 Printed 3/11/2021 2021-03-11 Full Routing Prepared by Timmons Gro Elevation Primary (feet) (cfs) 407.00 0.00 407.06 0.00 407.12 0.00 407.18 0.00 407.24 0.00 407.30 0.00 407.36 0.00 407.42 0.00 407.48 0.00 407.54 0.00 407.60 0.00 407.66 0.00 407.72 0.00 407.78 0.00 407.84 0.00 407.90 0.00 407.96 0.00 408.02 0.00 408.08 0.00 408.14 0.00 408.20 0.00 408.26 0.00 408.32 0.00 408.38 0.00 408.44 0.00 408.50 0.00 408.56 0.00 408.62 0.00 408.68 0.00 408.74 0.00 408.80 0.00 408.86 0.00 408.92 0.00 408.98 0.00 409.04 0.00 409.10 0.00 409.16 0.00 409.22 0.00 409.28 0.00 409.34 0.00 409.40 0.00 409.46 0.00 409.52 0.00 409.58 0.00 409.64 0.00 409.70 0.00 409.76 0.00 409.82 0.00 409.88 0.00 409.94 0.00 410.00 0.00 410.06 0.00 Type 1124-hr 1-YR Rainfall=3.05" Stage -Discharge for Pond 6P: BIORETENTION 1 Elevation Primary (feet) (cfs) 410.12 0.00 410.18 0.00 410.24 0.00 410.30 0.00 410.36 0.00 410.42 0.00 410.48 0.00 410.54 0.00 410.60 0.00 410.66 0.00 410.72 0.00 410.78 0.00 410.84 0.00 410.90 0.00 410.96 0.00 411.02 0.00 411.08 0.00 411.14 0.00 411.20 0.00 411.26 0.00 411.32 0.00 411.38 0.00 411.44 0.00 411.50 0.00 411.56 0.00 411.62 0.00 411.68 0.00 411.74 0.00 411.80 0.00 411.86 0.00 411.92 0.00 411.98 0.00 412.04 0.00 412.10 0.00 412.16 0.00 412.22 0.00 412.28 0.00 412.34 0.00 412.40 0.00 412.46 0.00 412.52 0.00 412.58 0.00 412.64 0.00 412.70 0.00 412.76 0.00 412.82 0.00 412.88 0.00 412.94 0.00 413.00 0.00 413.06 0.00 413.12 0.00 413.18 0.00 Elevation Primary (feet) (cfs) 413.24 0.00 413.30 0.00 413.36 0.00 413.42 0.00 413.48 0.00 413.54 0.00 413.60 0.00 413.66 0.00 413.72 0.00 413.78 0.00 413.84 0.00 413.90 0.00 413.96 0.00 414.02 0.00 414.08 0.00 414.14 0.00 414.20 0.00 414.26 0.00 414.32 0.00 414.38 0.00 414.44 0.00 414.50 0.00 414.56 0.00 414.62 0.00 414.68 0.00 414.74 0.00 414.80 0.00 414.86 0.00 414.92 0.00 414.98 0.00 415.04 0.41 415.10 1.62 415.16 3.29 415.22 5.30 415.28 7.61 415.34 10.18 415.40 12.99 415.46 16.03 415.52 19.26 415.58 22.69 415.64 26.30 415.70 30.08 415.76 34.03 415.82 38.14 415.88 42.61 415.94 47.90 416.00 53.71 416.06 59.94 416.12 66.57 416.18 73.54 416.24 80.86 416.30 88.48 Printed 3/11/2021 Elevation Primary (feet) (cfs) 416.36 92.19 416.42 95.41 416.48 98.87 416.54 102.61 416.60 106.54 416.66 110.69 416.72 115.14 416.78 119.80 416.84 124.69 416.90 129.68 416.96 134.85 417.02 140.22 417.08 145.85 417.14 151.76 417.20 157.88 417.26 164.18 417.32 170.43 417.38 176.86 417.44 183.47 417.50 189.88 2021-03-11 Full Routing Prepared by Timmons Gro 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 0 407.15 3,808 228 407.30 3,808 457 407.45 3,808 685 407.60 3,808 914 407.75 3,808 1,142 407.90 3,808 1,371 408.05 3,808 1,599 408.20 3,808 1,828 408.35 3,808 2,056 408.50 3,808 2,285 408.65 3,808 2,513 408.80 3,808 2,742 408.95 3,808 2,970 409.10 3,808 3,199 409.25 3,808 3,427 409.40 3,808 3,656 409.55 3,808 3,884 409.70 3,808 4,113 409.85 3,808 4,341 410.00 3,808 4,570 410.15 3,808 4,798 410.30 3,808 5,027 410.45 3,808 5,255 410.60 3,808 5,484 410.75 3,808 5,712 410.90 3,808 5,940 411.05 3,808 6,140 411.20 3,808 6,283 411.35 3,808 6,426 411.50 3,808 6,569 411.65 3,808 6,712 411.80 3,808 6,854 411.95 3,808 6,997 412.10 3,808 7,140 412.25 3,808 7,283 412.40 3,808 7,426 412.55 3,808 7,568 412.70 3,808 7,711 412.85 3,808 7,854 413.00 3,808 7,997 413.15 3,808 8,140 413.30 3,808 8,282 413.45 3,808 8,425 413.60 3,808 8,568 413.75 3,808 8,711 413.90 3,808 8,854 414.05 3,876 9,141 414.20 4,081 9,738 414.35 4,286 10,365 414.50 4,491 11,024 414.65 4,696 11,713 Elevation Surface Storage (feet) (sq-ft) (cubic -feet) 414.80 4,901 12,432 414.95 5,106 13,183 415.10 5,316 13,964 415.25 5,530 14,778 415.40 5,743 15,623 415.55 5,956 16,501 415.70 6,169 17,410 415.85 6,383 18,351 416.00 6,596 19,325 416.15 6,814 20,331 416.30 7,031 21,369 416.45 7,249 22,440 416.60 7,466 23,544 416.75 7,684 24,680 416.90 7,902 25,849 417.05 8,119 27,050 417.20 8,337 28,284 417.35 8,554 29,551 417.50 8,772 30,851 Printed 3/11/2021 2021-03-11 Full Routing Prepared by Timmons Gro Type 1124-hr 1-YR Rainfall=3.05" Summary for Pond 8P: BIORETENTION 2 Printed 3/11/2021 Inflow Area = 1.920 ac, 54.17% Impervious, Inflow Depth > 1.24" for 1-YR event Inflow = 4.48 cfs @ 11.97 hrs, Volume= 0.198 of Outflow = 0.27 cfs @ 12.99 hrs, Volume= 0.071 af, Atten= 94%, Lag= 60.8 min Primary = 0.27 cfs @ 12.99 hrs, Volume= 0.071 of Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Peak Elev= 431.94' @ 12.99 hrs Surf.Area= 2,017 sf Storage= 5,592 cf Plug -Flow detention time= 226.5 min calculated for 0.071 of (36% of inflow) Center -of -Mass det. time= 138.8 min ( 933.0 - 794.2 ) 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 Routino Invert Outlet Devices #1 Primary 424.43' 18.0" Round HDPE_Round 18" L= 61.4' RCP, sq.cut end projecting, Ke= 0.500 Inlet / Outlet Invert= 424.43' / 423.82' S= 0.0099 '/' Cc= 0.900 n= 0.010 PVC, smooth interior, Flow Area= 1.77 sf #2 Device 1 431.91' 36.0" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads Primary OutFlow Max=0.18 cfs @ 12.99 hrs HW=431.94' (Free Discharge) L1=HDPE_Round 18" (Passes 0.18 cfs of 22.13 cfs potential flow) t2=Orifice/Grate (Weir Controls 0.18 cfs @ 0.59 fps) 2021-03-11 Full Routing Prepared by Timmons Grc i c m m W Type ll 24-hr 1-YR Rainfall=3.05" Printed 3/11/2021 Pond 8P: BIORETENTION 2 Hydrograph I I I I Time (hours) Pond 8P: BIORETENTION 2 Stage -Discharge 434 Orifice/Grate - - 432 431 430- 429- .. ...... 428 ,_ ........_.. 427 426 425 HD 424 0 2 4 6 6 10 12 14 16 16 20 22 24 Discharge (ds) ■ h fim— ■ Primary ■ Primary 2021-03-11 Full Routing Prepared by Timmons Grc Pond 8P: BIORETENTION 2 Stage -Area -Storage Storage (cubic -feet) Type ll 24-hr 1-YR Rainfall=3.05" Printed 3/11/2021 ■ Surface ■ Storage 2021-03-11 Full Routing Prepared by Timmons Gro 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 0 423.91 0.00 9.00 0.00 0 423.91 0.00 9.50 0.00 1 423.91 0.00 10.00 0.01 15 423.93 0.00 10.50 0.03 54 424.00 0.00 11.00 0.07 141 424.13 0.00 11.50 0.16 337 424.44 0.00 12.00 4.33 3,195 429.56 0.00 12.50 0.43 5,184 431.74 0.00 13.00 0.27 5,592 431.94 0.27 13.50 0.21 5,578 431.94 0.21 14.00 0.16 5,567 431.93 0.17 14.50 0.14 5,562 431.93 0.15 15.00 0.13 5,559 431.93 0.13 15.50 0.12 5,555 431.92 0.12 16.00 0.10 5,552 431.92 0.10 16.50 0.10 5,550 431.92 0.10 17.00 0.09 5,548 431.92 0.09 17.50 0.09 5,547 431.92 0.09 18.00 0.08 5,546 431.92 0.08 18.50 0.08 5,545 431.92 0.08 19.00 0.07 5,543 431.92 0.07 19.50 0.06 5,542 431.92 0.07 20.00 0.06 5,541 431.92 0.06 Printed 3/11/2021 2021-03-11 Full Routing Prepared by Timmons Gro Elevation Primary (feet) (cfs) 423.91 0.00 423.97 0.00 424.03 0.00 424.09 0.00 424.15 0.00 424.21 0.00 424.27 0.00 424.33 0.00 424.39 0.00 424.45 0.00 424.51 0.00 424.57 0.00 424.63 0.00 424.69 0.00 424.75 0.00 424.81 0.00 424.87 0.00 424.93 0.00 424.99 0.00 425.05 0.00 425.11 0.00 425.17 0.00 425.23 0.00 425.29 0.00 425.35 0.00 425.41 0.00 425.47 0.00 425.53 0.00 425.59 0.00 425.65 0.00 425.71 0.00 425.77 0.00 425.83 0.00 425.89 0.00 425.95 0.00 426.01 0.00 426.07 0.00 426.13 0.00 426.19 0.00 426.25 0.00 426.31 0.00 426.37 0.00 426.43 0.00 426.49 0.00 426.55 0.00 426.61 0.00 426.67 0.00 426.73 0.00 426.79 0.00 426.85 0.00 426.91 0.00 426.97 0.00 Type ll 24-hr 1-YR Rainfall=3.05" Stage -Discharge for Pond 8P: BIORETENTION 2 Elevation Primary (feet) (cfs) 427.03 0.00 427.09 0.00 427.15 0.00 427.21 0.00 427.27 0.00 427.33 0.00 427.39 0.00 427.45 0.00 427.51 0.00 427.57 0.00 427.63 0.00 427.69 0.00 427.75 0.00 427.81 0.00 427.87 0.00 427.93 0.00 427.99 0.00 428.05 0.00 428.11 0.00 428.17 0.00 428.23 0.00 428.29 0.00 428.35 0.00 428.41 0.00 428.47 0.00 428.53 0.00 428.59 0.00 428.65 0.00 428.71 0.00 428.77 0.00 428.83 0.00 428.89 0.00 428.95 0.00 429.01 0.00 429.07 0.00 429.13 0.00 429.19 0.00 429.25 0.00 429.31 0.00 429.37 0.00 429.43 0.00 429.49 0.00 429.55 0.00 429.61 0.00 429.67 0.00 429.73 0.00 429.79 0.00 429.85 0.00 429.91 0.00 429.97 0.00 430.03 0.00 430.09 0.00 Elevation Primary (feet) (cfs) 430.15 0.00 430.21 0.00 430.27 0.00 430.33 0.00 430.39 0.00 430.45 0.00 430.51 0.00 430.57 0.00 430.63 0.00 430.69 0.00 430.75 0.00 430.81 0.00 430.87 0.00 430.93 0.00 430.99 0.00 431.05 0.00 431.11 0.00 431.17 0.00 431.23 0.00 431.29 0.00 431.35 0.00 431.41 0.00 431.47 0.00 431.53 0.00 431.59 0.00 431.65 0.00 431.71 0.00 431.77 0.00 431.83 0.00 431.89 0.00 431.95 0.25 432.01 0.97 432.07 1.97 432.13 3.18 432.19 4.57 432.25 6.11 432.31 7.80 432.37 9.62 432.43 11.56 432.49 13.61 432.55 15.78 432.61 18.05 432.67 20.42 432.73 22.88 432.79 23.47 432.85 23.56 432.91 23.66 432.97 23.75 433.03 23.84 433.09 23.93 433.15 24.02 433.21 24.11 Printed 3/11/2021 Elevation Primary (feet) (cfs) 433.27 24.20 433.33 24.29 433.39 24.38 433.45 24.47 433.51 24.56 433.57 24.65 433.63 24.73 433.69 24.82 433.75 24.91 433.81 25.00 433.87 25.08 433.93 25.17 433.99 25.26 2021-03-11 Full Routing Prepared by Timmons Gro 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 3/11/2021 2021-03-11 Full Routing Prepared by Timmons Gro Type 1124-hr 1-YR Rainfall=3.05" Summary for Pond 10P: DRY POND Printed 3/11/2021 Inflow Area = 7.010 ac, 60.49% Impervious, Inflow Depth > 1.37" for 1-YR event Inflow = 17.96 cfs @ 11.97 hrs, Volume= 0.799 of Outflow = 1.34 cfs @ 12.63 hrs, Volume= 0.752 af, Atten= 93%, Lag= 39.7 min Primary = 1.34 cfs @ 12.63 hrs, Volume= 0.752 of Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Peak Elev= 423.91' @ 12.63 hrs Surf.Area= 4,343 sf Storage= 17,130 cf Plug -Flow detention time= 147.5 min calculated for 0.749 of (94% of inflow) Center -of -Mass det. time= 125.9 min ( 915.1 - 789.3 ) Volume Invert Avail.Storage Storage Description #1 418.00' 29,593 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic -feet) (cubic -feet) 418.00 1,493 0 0 419.00 1,914 1,704 1,704 420.00 2,380 2,147 3,851 421.00 2,888 2,634 6,485 422.00 3,430 3,159 9,644 423.00 3,995 3,713 13,356 424.00 4,379 4,187 17,543 425.00 4,734 4,557 22,100 426.00 5,058 4,896 26,996 426.50 5,330 2,597 29,593 Device Routino Invert Outlet Devices #1 Primary 417.90' 24.0" Round Culvert L= 117.9' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 417.90' / 417.01' S= 0.0075 '/' Cc= 0.900 n= 0.010 PVC, smooth interior, Flow Area= 3.14 sf #2 Device 1 418.00' 4.0" W x 4.2" H Vert. Orifice/Grate C= 0.600 #3 Device 1 423.92' 60.0" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #4 Primary 424.99' 45.0' long x 5.0' breadth Broad -Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 Primary OutFlow Max=1.34 cfs @ 12.63 hrs HW=423.91' (Free Discharge) 1_Cu lvert (Passes 1.34 cfs of 33.84 cfs potential flow) �2=Orifice/Grate (Orifice Controls 1.34 cfs @ 11.53 fps) 3=Orifice/Grate ( Controls 0.00 cfs) =Broad -Crested Rectangular Weir ( Controls 0.00 cfs) 2021-03-11 Full Routing Prepared by Timmons Grc 42 42 42 42 c 0 m 42 W 42 42 41 41 0 Type I/ 24-hr 1-YR Rainfall=3.05" Printed 3/11/2021 C Paae 31 Pond 10P: DRY POND Hydrograph Time (hours) Pond 10P: DRY POND Stage -Discharge 8 LU 4U UU aU lUU l[U 14U 1w laU LUU LLU 24U L(jU Discharge ids) ■ Irrflow ■ Primary ■ Primary 2021-03-11 Full Routing Prepared by Timmons Grc 42 42 42 42 c 0 m 4 W 42 42 41 41 Type // 24-hr 1-YR Rainfall=3.05- Printed 3/11/2021 C Page 32 Pond 10P: DRY POND Stage -Area -Storage Surface/Horizontal/Wetted Area (sq-ft) n 5nn 1 nnn 1 5nn 2 nnn 2 5nn n nnn ISM 4 nnn 4 5nn 5 nnn 22 6 5 4 3 1 ',. oo 0 y Custom Stage Data 6 0 5,000 10,000 15,000 20.000 25,000 Storage (cubic -feet) ■ Surface ■ Storage 2021-03-11 Full Routing Prepared by Timmons Gro Type 1124-hr 1-YR Rainfall=3.05" Hydrograph for Pond 10P: DRY POND Time Inflow Storage Elevation Primary (hours) (cfs) (cubic -feet) (feet) (cfs) 5.00 0.00 0 418.00 0.00 5.50 0.00 0 418.00 0.00 6.00 0.00 0 418.00 0.00 6.50 0.00 0 418.00 0.00 7.00 0.00 0 418.00 0.00 7.50 0.00 0 418.00 0.00 8.00 0.00 0 418.00 0.00 8.50 0.00 0 418.00 0.00 9.00 0.02 10 418.01 0.00 9.50 0.05 61 418.04 0.01 10.00 0.10 150 418.10 0.03 10.50 0.18 289 418.19 0.09 11.00 0.34 500 418.32 0.19 11.50 0.75 941 418.58 0.36 12.00 17.26 11,569 422.54 1.17 12.50 1.67 17,065 423.89 1.34 13.00 1.04 16,924 423.86 1.34 13.50 0.80 16,164 423.68 1.32 14.00 0.63 15,096 423.43 1.29 14.50 0.56 13,871 423.13 1.25 15.00 0.51 12,616 422.81 1.21 15.50 0.45 11,340 422.48 1.16 16.00 0.40 10,049 422.12 1.12 16.50 0.37 8,773 421.74 1.06 17.00 0.35 7,562 421.36 1.00 17.50 0.33 6,424 420.98 0.94 18.00 0.31 5,365 420.60 0.87 18.50 0.29 4,393 420.22 0.80 19.00 0.27 3,516 419.86 0.73 19.50 0.25 2,741 419.51 0.65 20.00 0.23 2,076 419.19 0.57 Printed 3/11/2021 2021-03-11 Full Routing Prepared by Timmons Gro Elevation Primary (feet) (cfs) 418.00 0.00 418.10 0.03 418.20 0.10 418.30 0.18 418.40 0.26 418.50 0.32 418.60 0.36 418.70 0.41 418.80 0.44 418.90 0.48 419.00 0.51 419.10 0.54 419.20 0.57 419.30 0.60 419.40 0.62 419.50 0.65 419.60 0.67 419.70 0.69 419.80 0.72 419.90 0.74 420.00 0.76 420.10 0.78 420.20 0.80 420.30 0.82 420.40 0.84 420.50 0.86 420.60 0.87 420.70 0.89 420.80 0.91 420.90 0.93 421.00 0.94 421.10 0.96 421.20 0.98 421.30 0.99 421.40 1.01 421.50 1.02 421.60 1.04 421.70 1.05 421.80 1.07 421.90 1.08 422.00 1.10 422.10 1.11 422.20 1.13 422.30 1.14 422.40 1.15 422.50 1.17 422.60 1.18 422.70 1.19 422.80 1.21 422.90 1.22 423.00 1.23 423.10 1.25 Type 1124-hr 1-YR Rainfall=3.05" Stage -Discharge for Pond 10P: DRY POND Elevation Primary (feet) (cfs) 423.20 1.26 423.30 1.27 423.40 1.28 423.50 1.30 423.60 1.31 423.70 1.32 423.80 1.33 423.90 1.34 424.00 2.52 424.10 5.29 424.20 8.99 424.30 13.42 424.40 18.48 424.50 24.10 424.60 30.23 424.70 36.43 424.80 36.74 424.90 37.05 425.00 37.47 425.10 41.51 425.20 48.14 425.30 57.13 425.40 68.22 425.50 81.64 425.60 97.02 425.70 111.84 425.80 127.65 425.90 144.71 426.00 162.67 426.10 181.05 426.20 200.16 426.30 220.25 426.40 241.08 426.50 262.97 Printed 3/11/2021 2021-03-11 Full Routing Prepared by Timmons Grc Type l/ 24-hr 1-YR Rainfall=3.05" Stage -Area -Storage for Pond 10P: DRY POND Elevation Surface Storage (feet) (sq-ft) (cubic -feet) 418.00 1,493 0 418.10 1,535 151 418.20 1,577 307 418.30 1,619 467 418.40 1,661 631 418.50 1,704 799 418.60 1,746 972 418.70 1,788 1,148 418.80 1,830 1,329 418.90 1,872 1,514 419.00 1,914 1,704 419.10 1,961 1,897 419.20 2,007 2,096 419.30 2,054 2,299 419.40 2,100 2,506 419.50 2,147 2,719 419.60 2,194 2,936 419.70 2,240 3,157 419.80 2,287 3,384 419.90 2,333 3,615 420.00 2,380 3,851 420.10 2,431 4,091 420.20 2,482 4,337 420.30 2,532 4,587 420.40 2,583 4,843 420.50 2,634 5,104 420.60 2,685 5,370 420.70 2,736 5,641 420.80 2,786 5,917 420.90 2,837 6,198 421.00 2,888 6,485 421.10 2,942 6,776 421.20 2,996 7,073 421.30 3,051 7,375 421.40 3,105 7,683 421.50 3,159 7,996 421.60 3,213 8,315 421.70 3,267 8,639 421.80 3,322 8,968 421.90 3,376 9,303 422.00 3,430 9,644 422.10 3,487 9,989 422.20 3,543 10,341 422.30 3,600 10,698 422.40 3,656 11,061 422.50 3,713 11,429 422.60 3,769 11,803 422.70 3,825 12,183 422.80 3,882 12,568 422.90 3,938 12,959 423.00 3,995 13,356 423.10 4,033 13,757 Elevation Surface Storage (feet) (sq-ft) (cubic -feet) 423.20 4,072 14,163 423.30 4,110 14,572 423.40 4,149 14,985 423.50 4,187 15,402 423.60 4,225 15,822 423.70 4,264 16,247 423.80 4,302 16,675 423.90 4,341 17,107 424.00 4,379 17,543 424.10 4,415 17,983 424.20 4,450 18,426 424.30 4,486 18,873 424.40 4,521 19,323 424.50 4,557 19,777 424.60 4,592 20,234 424.70 4,627 20,695 424.80 4,663 21,160 424.90 4,698 21,628 425.00 4,734 22,100 425.10 4,766 22,575 425.20 4,799 23,053 425.30 4,831 23,534 425.40 4,864 24,019 425.50 4,896 24,507 425.60 4,928 24,998 425.70 4,961 25,493 425.80 4,993 25,990 425.90 5,026 26,491 426.00 5,058 26,996 426.10 5,112 27,504 426.20 5,167 28,018 426.30 5,221 28,537 426.40 5,276 29,062 426.50 6,330 29,593 Printed 3/11/2021 2021-03-11 Full Routing Prepared by Timmons Gro Type 1124-hr 1-YR Rainfall=3.05" Printed 3/11/2021 Summary for Link 3L: PRE Combined Inflow Area = 16.080 ac, 4.48% Impervious, Inflow Depth > 0.37" for 1-YR event Inflow = 9.58 cfs @ 12.00 hrs, Volume= 0.499 of Primary = 9.58 cfs @ 12.00 hrs, Volume= 0.499 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs 10 9 8 7 6 0 5 LL 4 3 2 1 0 Link 3L: PRE Combined Hydrograph Time (hours) 1 1 1 1 1 1 1 1 ■ InMov ■ Primary 2021-03-11 Full Routing Prepared by Timmons Gro Type 1124-hr 1-YR Rainfall=3.05" Hydrograph for Link 3L: PRE Combined Time Inflow Elevation Primary (hours) (cfs) (feet) (cfs) 5.00 0.00 0.00 0.00 5.25 0.00 0.00 0.00 5.50 0.00 0.00 0.00 5.75 0.00 0.00 0.00 6.00 0.00 0.00 0.00 6.25 0.00 0.00 0.00 6.50 0.00 0.00 0.00 6.75 0.00 0.00 0.00 7.00 0.00 0.00 0.00 7.25 0.00 0.00 0.00 7.50 0.00 0.00 0.00 7.75 0.00 0.00 0.00 8.00 0.00 0.00 0.00 8.25 0.00 0.00 0.00 8.50 0.00 0.00 0.00 8.75 0.00 0.00 0.00 9.00 0.00 0.00 0.00 9.25 0.00 0.00 0.00 9.50 0.00 0.00 0.00 9.75 0.00 0.00 0.00 10.00 0.00 0.00 0.00 10.25 0.00 0.00 0.00 10.50 0.00 0.00 0.00 10.75 0.00 0.00 0.00 11.00 0.00 0.00 0.00 11.25 0.00 0.00 0.00 11.50 0.02 0.00 0.02 11.75 0.32 0.00 0.32 12.00 9.57 0.00 9.57 12.25 1.99 0.00 1.99 12.50 1.40 0.00 1.40 12.75 1.08 0.00 1.08 13.00 0.93 0.00 0.93 13.25 0.83 0.00 0.83 13.50 0.75 0.00 0.75 13.75 0.67 0.00 0.67 14.00 0.61 0.00 0.61 14.25 0.57 0.00 0.57 14.50 0.55 0.00 0.55 14.75 0.53 0.00 0.53 15.00 0.51 0.00 0.51 15.25 0.48 0.00 0.48 15.50 0.46 0.00 0.46 15.75 0.44 0.00 0.44 16.00 0.41 0.00 0.41 16.25 0.39 0.00 0.39 16.50 0.39 0.00 0.39 16.75 0.38 0.00 0.38 17.00 0.37 0.00 0.37 17.25 0.36 0.00 0.36 17.50 0.35 0.00 0.35 17.75 0.34 0.00 0.34 Time Inflow Elevation Primary (hours) (cfs) (feet) (cfs) 18.00 0.33 0.00 0.33 18.25 0.32 0.00 0.32 18.50 0.32 0.00 0.32 18.75 0.31 0.00 0.31 19.00 0.29 0.00 0.29 19.25 0.28 0.00 0.28 19.50 0.27 0.00 0.27 19.75 0.26 0.00 0.26 20.00 0.25 0.00 0.25 Printed 3/11/2021 2021-03-11 Full Routing Prepared by Timmons Gro Type 1124-hr 1-YR Rainfall=3.05" Printed 3/11/2021 Summary for Link 13L: POST Combined Inflow Area = 16.220 ac, 55.49% Impervious, Inflow Depth > 0.90" for 1-YR event Inflow = 3.74 cfs @ 11.98 hrs, Volume= 1.223 of Primary = 3.74 cfs @ 11.98 hrs, Volume= 1.223 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Link 13L: POST Combined Hydrograph ■ Inflow ■ Primary Time (houm) 2021-03-11 Full Routing Prepared by Timmons Gro Type 1124-hr 1-YR Rainfall=3.05" Hydrograph for Link 13L: POST Combined Time Inflow Elevation Primary (hours) (cfs) (feet) (cfs) 5.00 0.00 0.00 0.00 5.25 0.00 0.00 0.00 5.50 0.00 0.00 0.00 5.75 0.00 0.00 0.00 6.00 0.00 0.00 0.00 6.25 0.00 0.00 0.00 6.50 0.00 0.00 0.00 6.75 0.00 0.00 0.00 7.00 0.00 0.00 0.00 7.25 0.00 0.00 0.00 7.50 0.00 0.00 0.00 7.75 0.00 0.00 0.00 8.00 0.00 0.00 0.00 8.25 0.00 0.00 0.00 8.50 0.00 0.00 0.00 8.75 0.00 0.00 0.00 9.00 0.00 0.00 0.00 9.25 0.01 0.00 0.01 9.50 0.02 0.00 0.02 9.75 0.03 0.00 0.03 10.00 0.04 0.00 0.04 10.25 0.07 0.00 0.07 10.50 0.11 0.00 0.11 10.75 0.16 0.00 0.16 11.00 0.23 0.00 0.23 11.25 0.32 0.00 0.32 11.50 0.43 0.00 0.43 11.75 1.08 0.00 1.08 12.00 3.69 0.00 3.69 12.25 3.04 0.00 3.04 12.50 3.01 0.00 3.01 12.75 2.57 0.00 2.57 13.00 2.64 0.00 2.64 13.25 2.45 0.00 2.45 13.50 2.31 0.00 2.31 13.75 2.18 0.00 2.18 14.00 2.07 0.00 2.07 14.25 1.98 0.00 1.98 14.50 1.93 0.00 1.93 14.75 1.88 0.00 1.88 15.00 1.83 0.00 1.83 15.25 1.77 0.00 1.77 15.50 1.72 0.00 1.72 15.75 1.66 0.00 1.66 16.00 1.60 0.00 1.60 16.25 1.55 0.00 1.55 16.50 1.51 0.00 1.51 16.75 1.47 0.00 1.47 17.00 1.43 0.00 1.43 17.25 1.38 0.00 1.38 17.50 1.34 0.00 1.34 17.75 1.30 0.00 1.30 Time Inflow Elevation Primary (hours) (cfs) (feet) (cfs) 18.00 1.25 0.00 1.25 18.25 1.20 0.00 1.20 18.50 1.16 0.00 1.16 18.75 1.11 0.00 1.11 19.00 1.06 0.00 1.06 19.25 1.01 0.00 1.01 19.50 0.95 0.00 0.95 19.75 0.90 0.00 0.90 20.00 0.84 0.00 0.84 Printed 3/11/2021 2021-03-11 Full Routing Prepared by Timmons Gro Type/1 24-hr 10-YR Rainfall=5.58" Summary for Subcatchment 1S: PRE Onsite Runoff = 43.26 cfs @ 11.98 hrs, Volume= 1.889 af, Depth> 1.56" Printed 3/11/2021 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 0.210 98 Paved parking, HSG B 0.000 61 >75% Grass cover, Good, HSG B 14.350 60 Woods, Fair, HSG B 14.560 61 Weighted Average 14.350 98.56% Pervious Area 0.210 1.44% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 1S: PRE Onsite Hydrograph ■ Runoff Time (hours) 2021-03-11 Full Routing Prepared by Timmons Gro 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 0.23 11.50 1.58 0.01 0.65 11.75 2.16 0.11 6.69 12.00 3.70 0.66 42.07 12.25 3.94 0.78 6.79 12.50 4.10 0.86 4.54 12.75 4.21 0.92 3.40 13.00 4.31 0.97 2.89 13.25 4.39 1.02 2.53 13.50 4.46 1.06 2.24 13.75 4.52 1.09 2.00 14.00 4.58 1.12 1.79 14.25 4.63 1.15 1.67 14.50 4.67 1.18 1.60 14.75 4.72 1.20 1.53 15.00 4.76 1.23 1.46 15.25 4.80 1.25 1.38 15.50 4.84 1.27 1.30 15.75 4.88 1.30 1.23 16.00 4.91 1.32 1.15 16.25 4.94 1.33 1.10 16.50 4.97 1.35 1.08 16.75 5.00 1.37 1.05 17.00 5.03 1.39 1.02 17.25 5.06 1.41 1.00 17.50 5.09 1.42 0.97 17.75 5.11 1.44 0.94 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 18.00 5.14 1.45 0.91 18.25 5.16 1.47 0.88 18.50 5.19 1.48 0.85 18.75 5.21 1.50 0.83 19.00 5.23 1.51 0.80 19.25 5.25 1.52 0.77 19.50 5.27 1.54 0.74 19.75 5.29 1.55 0.71 20.00 5.31 1.56 0.68 Printed 3/11/2021 2021-03-11 Full Routing Prepared by Timmons Gro Type/1 24-hr 10-YR Rainfall=5.58" Summary for Subcatchment 2S: Pre Offsite Runoff = 7.18 cfs @ 11.97 hrs, Volume= 0.320 af, Depth> 2.52" Printed 3/11/2021 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 0.510 98 Paved parking, HSG B 0.000 61 >75% Grass cover, Good, HSG B 1.010 60 Woods, Fair, HSG B 1.520 73 Weighted Average 1.010 66.45% Pervious Area 0.510 33.55% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 2S: Pre Offsite Hydrograph ■ Rurwff Time (hours) 2021-03-11 Full Routing Prepared by Timmons Gro Type/1 24-hr 10-YR Rainfall=5.58" Hydrograph for Subcatchment 2S: Pre Mite Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 5.00 0.35 0.00 0.00 5.25 0.37 0.00 0.00 5.50 0.40 0.00 0.00 5.75 0.42 0.00 0.00 6.00 0.45 0.00 0.00 6.25 0.47 0.00 0.00 6.50 0.50 0.00 0.00 6.75 0.52 0.00 0.00 7.00 0.55 0.00 0.00 7.25 0.58 0.00 0.00 7.50 0.61 0.00 0.00 7.75 0.64 0.00 0.00 8.00 0.67 0.00 0.00 8.25 0.70 0.00 0.00 8.50 0.74 0.00 0.00 8.75 0.78 0.00 0.00 9.00 0.82 0.00 0.01 9.25 0.86 0.00 0.02 9.50 0.91 0.01 0.02 9.75 0.96 0.01 0.03 10.00 1.01 0.02 0.04 10.25 1.07 0.03 0.06 10.50 1.14 0.04 0.07 10.75 1.22 0.05 0.10 11.00 1.31 0.08 0.14 11.25 1.43 0.11 0.20 11.50 1.58 0.16 0.30 11.75 2.16 0.39 1.76 12.00 3.70 1.32 6.90 12.25 3.94 1.48 1.02 12.50 4.10 1.60 0.67 12.75 4.21 1.68 0.49 13.00 4.31 1.75 0.42 13.25 4.39 1.81 0.36 13.50 4.46 1.86 0.32 13.75 4.52 1.91 0.28 14.00 4.58 1.95 0.25 14.25 4.63 1.99 0.23 14.50 4.67 2.03 0.22 14.75 4.72 2.06 0.21 15.00 4.76 2.10 0.20 15.25 4.80 2.13 0.19 15.50 4.84 2.16 0.18 15.75 4.88 2.18 0.17 16.00 4.91 2.21 0.16 16.25 4.94 2.24 0.15 16.50 4.97 2.26 0.15 16.75 5.00 2.28 0.14 17.00 5.03 2.31 0.14 17.25 5.06 2.33 0.14 17.50 5.09 2.35 0.13 17.75 5.11 2.37 0.13 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 18.00 5.14 2.39 0.12 18.25 5.16 2.41 0.12 18.50 5.19 2.43 0.12 18.75 5.21 2.45 0.11 19.00 5.23 2.46 0.11 19.25 5.25 2.48 0.10 19.50 5.27 2.50 0.10 19.75 5.29 2.51 0.09 20.00 5.31 2.53 0.09 Printed 3/11/2021 2021-03-11 Full Routing Prepared by Timmons Gro Type/1 24-hr 10-YR Rainfall=5.58" Summary for Subcatchment 4S: Onsite To Bioretention 1 Runoff = 26.87 cfs @ 11.97 hrs, Volume= 1.246 af, Depth> 3.45" Printed 3/11/2021 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 2.640 98 Paved parking, HSG B 1.430 61 >75% Grass cover, Good, HSG B 0.260 60 Woods, Fair, HSG B 4.330 83 Weighted Average 1.690 39.03% Pervious Area 2.640 60.97% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 4S: Onsite To Bioretention 1 Hydrograph ■ Rurwff Time (hours) 2021-03-11 Full Routing Prepared by Timmons Gro 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 0.01 6.25 0.47 0.00 0.02 6.50 0.50 0.00 0.03 6.75 0.52 0.01 0.04 7.00 0.55 0.01 0.06 7.25 0.58 0.01 0.07 7.50 0.61 0.02 0.08 7.75 0.64 0.02 0.10 8.00 0.67 0.03 0.11 8.25 0.70 0.04 0.13 8.50 0.74 0.05 0.16 8.75 0.78 0.06 0.19 9.00 0.82 0.07 0.22 9.25 0.86 0.08 0.25 9.50 0.91 0.10 0.27 9.75 0.96 0.12 0.31 10.00 1.01 0.14 0.37 10.25 1.07 0.16 0.45 10.50 1.14 0.19 0.54 10.75 1.22 0.23 0.67 11.00 1.31 0.28 0.84 11.25 1.43 0.34 1.15 11.50 1.58 0.43 1.57 11.75 2.16 0.81 7.95 12.00 3.70 2.03 25.33 12.25 3.94 2.23 3.54 12.50 4.10 2.37 2.29 12.75 4.21 2.47 1.68 13.00 4.31 2.56 1.41 13.25 4.39 2.63 1.22 13.50 4.46 2.69 1.07 13.75 4.52 2.74 0.95 14.00 4.58 2.79 0.84 14.25 4.63 2.84 0.78 14.50 4.67 2.88 0.74 14.75 4.72 2.92 0.71 15.00 4.76 2.96 0.67 15.25 4.80 3.00 0.63 15.50 4.84 3.03 0.60 15.75 4.88 3.06 0.56 16.00 4.91 3.09 0.52 16.25 4.94 3.12 0.50 16.50 4.97 3.15 0.48 16.75 5.00 3.18 0.47 17.00 5.03 3.20 0.46 17.25 5.06 3.23 0.44 17.50 5.09 3.25 0.43 17.75 5.11 3.28 0.42 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 18.00 5.14 3.30 0.40 18.25 5.16 3.32 0.39 18.50 5.19 3.34 0.38 18.75 5.21 3.37 0.36 19.00 5.23 3.39 0.35 19.25 5.25 3.40 0.34 19.50 5.27 3.42 0.32 19.75 5.29 3.44 0.31 20.00 5.31 3.46 0.29 Printed 3/11/2021 2021-03-11 Full Routing Prepared by Timmons Gro Type/1 24-hr 10-YR Rainfall=5.58" Summary for Subcatchment 5S: Mite To Bioretention 1 Runoff = 7.18 cfs @ 11.97 hrs, Volume= 0.320 af, Depth> 2.52" Printed 3/11/2021 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 0.510 98 Paved parking, HSG B 0.000 61 >75% Grass cover, Good, HSG B 1.010 60 Woods, Fair, HSG B 1.520 73 Weighted Average 1.010 66.45% Pervious Area 0.510 33.55% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 5S: Mite To Bioretention 1 Hydrograph ❑ RunoH Time (hours) 2021-03-11 Full Routing Prepared by Timmons Gro 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 0.00 9.00 0.82 0.00 0.01 9.25 0.86 0.00 0.02 9.50 0.91 0.01 0.02 9.75 0.96 0.01 0.03 10.00 1.01 0.02 0.04 10.25 1.07 0.03 0.06 10.50 1.14 0.04 0.07 10.75 1.22 0.05 0.10 11.00 1.31 0.08 0.14 11.25 1.43 0.11 0.20 11.50 1.58 0.16 0.30 11.75 2.16 0.39 1.76 12.00 3.70 1.32 6.90 12.25 3.94 1.48 1.02 12.50 4.10 1.60 0.67 12.75 4.21 1.68 0.49 13.00 4.31 1.75 0.42 13.25 4.39 1.81 0.36 13.50 4.46 1.86 0.32 13.75 4.52 1.91 0.28 14.00 4.58 1.95 0.25 14.25 4.63 1.99 0.23 14.50 4.67 2.03 0.22 14.75 4.72 2.06 0.21 15.00 4.76 2.10 0.20 15.25 4.80 2.13 0.19 15.50 4.84 2.16 0.18 15.75 4.88 2.18 0.17 16.00 4.91 2.21 0.16 16.25 4.94 2.24 0.15 16.50 4.97 2.26 0.15 16.75 5.00 2.28 0.14 17.00 5.03 2.31 0.14 17.25 5.06 2.33 0.14 17.50 5.09 2.35 0.13 17.75 5.11 2.37 0.13 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 18.00 5.14 2.39 0.12 18.25 5.16 2.41 0.12 18.50 5.19 2.43 0.12 18.75 5.21 2.45 0.11 19.00 5.23 2.46 0.11 19.25 5.25 2.48 0.10 19.50 5.27 2.50 0.10 19.75 5.29 2.51 0.09 20.00 5.31 2.53 0.09 Printed 3/11/2021 2021-03-11 Full Routing Prepared by Timmons Gro Type/1 24-hr 10-YR Rainfall=5.58" Summary for Subcatchment 7S: To Bioretention 2 Runoff = 11.37 cfs @ 11.97 hrs, Volume= 0.521 af, Depth> 3.26" Printed 3/11/2021 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 1.040 98 Paved parking, HSG B 0.840 61 >75% Grass cover, Good, HSG B 0.040 60 Woods, Fair, HSG B 1.920 81 Weighted Average 0.880 45.83% Pervious Area 1.040 54.17% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 7S: To Bioretention 2 Hydrograph ■ Rurwff Time (hours) 2021-03-11 Full Routing Prepared by Timmons Gro 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 0.00 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 0.01 7.00 0.55 0.00 0.01 7.25 0.58 0.01 0.02 7.50 0.61 0.01 0.02 7.75 0.64 0.01 0.03 8.00 0.67 0.02 0.03 8.25 0.70 0.02 0.04 8.50 0.74 0.03 0.05 8.75 0.78 0.04 0.06 9.00 0.82 0.05 0.08 9.25 0.86 0.06 0.09 9.50 0.91 0.07 0.10 9.75 0.96 0.08 0.11 10.00 1.01 0.10 0.14 10.25 1.07 0.12 0.17 10.50 1.14 0.15 0.21 10.75 1.22 0.18 0.26 11.00 1.31 0.22 0.33 11.25 1.43 0.28 0.45 11.50 1.58 0.36 0.63 11.75 2.16 0.71 3.25 12.00 3.70 1.87 10.75 12.25 3.94 2.07 1.52 12.50 4.10 2.21 0.98 12.75 4.21 2.30 0.72 13.00 4.31 2.38 0.61 13.25 4.39 2.45 0.52 13.50 4.46 2.51 0.46 13.75 4.52 2.57 0.41 14.00 4.58 2.61 0.36 14.25 4.63 2.66 0.34 14.50 4.67 2.70 0.32 14.75 4.72 2.74 0.31 15.00 4.76 2.78 0.29 15.25 4.80 2.81 0.27 15.50 4.84 2.85 0.26 15.75 4.88 2.88 0.24 16.00 4.91 2.91 0.22 16.25 4.94 2.93 0.22 16.50 4.97 2.96 0.21 16.75 5.00 2.99 0.20 17.00 5.03 3.01 0.20 17.25 5.06 3.04 0.19 17.50 5.09 3.06 0.19 17.75 5.11 3.09 0.18 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 18.00 5.14 3.11 0.17 18.25 5.16 3.13 0.17 18.50 5.19 3.15 0.16 18.75 5.21 3.17 0.16 19.00 5.23 3.19 0.15 19.25 5.25 3.21 0.15 19.50 5.27 3.23 0.14 19.75 5.29 3.25 0.13 20.00 5.31 3.26 0.13 Printed 3/11/2021 2021-03-11 Full Routing Prepared by Timmons Gro Type/1 24-hr 10-YR Rainfall=5.58" Summary for Subcatchment 9S: To Dry Pond Runoff = 43.50 cfs @ 11.97 hrs, Volume= 2.017 af, Depth> 3.45" Printed 3/11/2021 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 4.240 98 Paved parking, HSG B 2.770 61 >75% Grass cover, Good, HSG B 0.000 60 Woods, Fair, HSG B 7.010 83 Weighted Average 2.770 39.51 % Pervious Area 4.240 60.49% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 9S: To Dry Pond Hydrograph ■ Rurwff Time (hours) 2021-03-11 Full Routing Prepared by Timmons Gro Type/1 24-hr 10-YR Rainfall=5.58" Hydrograph for Subcatchment 9S: To Dry Pond Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 5.00 0.35 0.00 0.00 5.25 0.37 0.00 0.00 5.50 0.40 0.00 0.00 5.75 0.42 0.00 0.00 6.00 0.45 0.00 0.02 6.25 0.47 0.00 0.04 6.50 0.50 0.00 0.05 6.75 0.52 0.01 0.07 7.00 0.55 0.01 0.09 7.25 0.58 0.01 0.11 7.50 0.61 0.02 0.13 7.75 0.64 0.02 0.15 8.00 0.67 0.03 0.18 8.25 0.70 0.04 0.21 8.50 0.74 0.05 0.26 8.75 0.78 0.06 0.31 9.00 0.82 0.07 0.36 9.25 0.86 0.08 0.41 9.50 0.91 0.10 0.44 9.75 0.96 0.12 0.50 10.00 1.01 0.14 0.60 10.25 1.07 0.16 0.72 10.50 1.14 0.19 0.87 10.75 1.22 0.23 1.09 11.00 1.31 0.28 1.36 11.25 1.43 0.34 1.86 11.50 1.58 0.43 2.54 11.75 2.16 0.81 12.86 12.00 3.70 2.03 41.00 12.25 3.94 2.23 5.72 12.50 4.10 2.37 3.71 12.75 4.21 2.47 2.72 13.00 4.31 2.56 2.28 13.25 4.39 2.63 1.97 13.50 4.46 2.69 1.73 13.75 4.52 2.74 1.54 14.00 4.58 2.79 1.36 14.25 4.63 2.84 1.26 14.50 4.67 2.88 1.20 14.75 4.72 2.92 1.14 15.00 4.76 2.96 1.08 15.25 4.80 3.00 1.02 15.50 4.84 3.03 0.96 15.75 4.88 3.06 0.90 16.00 4.91 3.09 0.84 16.25 4.94 3.12 0.81 16.50 4.97 3.15 0.78 16.75 5.00 3.18 0.76 17.00 5.03 3.20 0.74 17.25 5.06 3.23 0.72 17.50 5.09 3.25 0.70 17.75 5.11 3.28 0.68 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 18.00 5.14 3.30 0.65 18.25 5.16 3.32 0.63 18.50 5.19 3.34 0.61 18.75 5.21 3.37 0.59 19.00 5.23 3.39 0.57 19.25 5.25 3.40 0.54 19.50 5.27 3.42 0.52 19.75 5.29 3.44 0.50 20.00 5.31 3.46 0.48 Printed 3/11/2021 2021-03-11 Full Routing Prepared by Timmons Gro Type/1 24-hr 10-YR Rainfall=5.58" Printed 3/11/2021 Summary for Subcatchment 11S: Onsite Unrouted 4 Runoff = 2.43 cfs @ 11.98 hrs, Volume= 0.106 af, Depth> 2.02" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24-hr 10-YR Rainfall=5.58" Area (ac) CN Description 0.110 98 Paved parking, HSG B 0.380 61 >75% Grass cover, Good, HSG B 0.140 60 Woods, Fair, HSG B 0.630 67 Weighted Average 0.520 82.54% Pervious Area 0.110 17.46% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 11S: Onsite Unrouted 4 Hydrograph 2 43 da Type II 24-hr I10-YR Rainfall=5.58" Runoff Area=0.630 ac Runoff Volume=0.106 of Runoff Depth>2.02" Tc=6.0 min CN=67 5 b 1 8 9 1U 11 12 iJ 14 15 1U I 18 19 2U Time (hours) ❑ RunoH 2021-03-11 Full Routing Prepared by Timmons Gro 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 0.00 10.50 1.14 0.00 0.01 10.75 1.22 0.01 0.02 11.00 1.31 0.02 0.03 11.25 1.43 0.04 0.04 11.50 1.58 0.06 0.07 11.75 2.16 0.23 0.50 12.00 3.70 0.96 2.34 12.25 3.94 1.11 0.36 12.50 4.10 1.21 0.24 12.75 4.21 1.28 0.18 13.00 4.31 1.34 0.15 13.25 4.39 1.39 0.13 13.50 4.46 1.44 0.11 13.75 4.52 1.48 0.10 14.00 4.58 1.51 0.09 14.25 4.63 1.55 0.09 14.50 4.67 1.58 0.08 14.75 4.72 1.61 0.08 15.00 4.76 1.64 0.07 15.25 4.80 1.67 0.07 15.50 4.84 1.69 0.07 15.75 4.88 1.72 0.06 16.00 4.91 1.74 0.06 16.25 4.94 1.76 0.06 16.50 4.97 1.78 0.05 16.75 5.00 1.80 0.05 17.00 5.03 1.83 0.05 17.25 5.06 1.84 0.05 17.50 5.09 1.86 0.05 17.75 5.11 1.88 0.05 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 18.00 5.14 1.90 0.05 18.25 5.16 1.92 0.04 18.50 5.19 1.93 0.04 18.75 5.21 1.95 0.04 19.00 5.23 1.97 0.04 19.25 5.25 1.98 0.04 19.50 5.27 2.00 0.04 19.75 5.29 2.01 0.04 20.00 5.31 2.02 0.03 Printed 3/11/2021 2021-03-11 Full Routing Prepared by Timmons Gro Type/1 24-hr 10-YR Rainfall=5.58" Summary for Subcatchment 12S: Onsite Unrouted 5 Runoff = 4.91 cfs @ 11.97 hrs, Volume= 0.226 af, Depth> 3.36" Printed 3/11/2021 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 0.460 98 Paved parking, HSG B 0.310 61 >75% Grass cover, Good, HSG B 0.040 60 Woods, Fair, HSG B 0.810 82 Weighted Average 0.350 43.21 % Pervious Area 0.460 56.79% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 12S: Onsite Unrouted 5 Hydrograph ❑ RunoH Time (hours) 2021-03-11 Full Routing Prepared by Timmons Gro 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 0.01 7.00 0.55 0.01 0.01 7.25 0.58 0.01 0.01 7.50 0.61 0.01 0.01 7.75 0.64 0.02 0.01 8.00 0.67 0.02 0.02 8.25 0.70 0.03 0.02 8.50 0.74 0.04 0.03 8.75 0.78 0.05 0.03 9.00 0.82 0.06 0.04 9.25 0.86 0.07 0.04 9.50 0.91 0.08 0.05 9.75 0.96 0.10 0.05 10.00 1.01 0.12 0.06 10.25 1.07 0.14 0.08 10.50 1.14 0.17 0.09 10.75 1.22 0.20 0.12 11.00 1.31 0.25 0.15 11.25 1.43 0.31 0.20 11.50 1.58 0.39 0.28 11.75 2.16 0.76 1.43 12.00 3.70 1.95 4.64 12.25 3.94 2.15 0.65 12.50 4.10 2.29 0.42 12.75 4.21 2.39 0.31 13.00 4.31 2.47 0.26 13.25 4.39 2.54 0.22 13.50 4.46 2.60 0.20 13.75 4.52 2.65 0.18 14.00 4.58 2.70 0.16 14.25 4.63 2.75 0.14 14.50 4.67 2.79 0.14 14.75 4.72 2.83 0.13 15.00 4.76 2.87 0.12 15.25 4.80 2.90 0.12 15.50 4.84 2.94 0.11 15.75 4.88 2.97 0.10 16.00 4.91 3.00 0.10 16.25 4.94 3.03 0.09 16.50 4.97 3.05 0.09 16.75 5.00 3.08 0.09 17.00 5.03 3.11 0.08 17.25 5.06 3.13 0.08 17.50 5.09 3.16 0.08 17.75 5.11 3.18 0.08 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 18.00 5.14 3.20 0.07 18.25 5.16 3.23 0.07 18.50 5.19 3.25 0.07 18.75 5.21 3.27 0.07 19.00 5.23 3.29 0.06 19.25 5.25 3.31 0.06 19.50 5.27 3.33 0.06 19.75 5.29 3.34 0.06 20.00 5.31 3.36 0.05 Printed 3/11/2021 2021-03-11 Full Routing Prepared by Timmons Gro Type/1 24-hr 10-YR Rainfall=5.58" Summary for Pond 6P: BIORETENTION 1 Printed 3/11/2021 Inflow Area = 5.850 ac, 53.85% Impervious, Inflow Depth > 3.21" for 10-YR event Inflow = 34.04 cfs @ 11.97 hrs, Volume= 1.566 of Outflow = 32.79 cfs @ 11.99 hrs, Volume= 1.254 af, Atten= 4%, Lag= 1.5 min Primary = 32.79 cfs @ 11.99 hrs, Volume= 1.254 of Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Peak Elev= 415.74' @ 11.99 hrs Surf.Area= 6,228 sf Storage= 17,664 cf Plug -Flow detention time= 85.4 min calculated for 1.254 of (80% of inflow) Center -of -Mass det. time= 30.9 min ( 803.7 - 772.8 ) Volume Invert Avail.Storage Storage Description #1 407.00' 30,851 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 19,325 417.50 8,772 100.0 11,526 30,851 Device Routing Invert Outlet Devices #1 Primary 409.71' 36.0" Round HDPE_Round 36" L= 47.6' RCP, sq.cut end projecting, Ke= 0.500 Inlet / Outlet Invert= 409.71' / 409.00' S= 0.0149 '/' Cc= 0.900 n= 0.010 PVC, smooth interior, Flow Area= 7.07 sf #2 Device 1 415.00' 60.0" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #3 Primary 415.85' 15.0' long x 1.0' breadth Broad -Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 Coef. (English) 2.69 2.72 2.75 2.85 2.98 3.08 3.20 3.28 3.31 3.30 3.31 3.32 Primary OutFlow Max=32.20 cfs @ 11.99 hrs HW=415.73' (Free Discharge) 11=HDPE Round 36" (Passes 32.20 cfs of 72.38 cfs potential flow) t2=Orifice/Grate (Weir Controls 32.20 cfs @ 2.80 fps) 3=Broad-Crested Rectangular Weir ( Controls 0.00 cfs) 2021-03-11 Full Routing Prepared by Timmons Gro W Type/1 24-hr 10-YR Rainfall=5.58" Printed 3/11/2021 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 Discharge ids) ■ InMoa ■ Primary ❑ Primary 2021-03-11 Full Routing Prepared by Timmons Grc Type 1124-hr 10-YR Rainfall=5.58" Pond 6P: BIORETENTION 1 Stage -Area -Storage Storage (cubic -feet) Printed 3/11/2021 ■ Surface ■ Storage 2021-03-11 Full Routing Prepared by Timmons Gro 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 0.01 6 407.00 0.00 6.50 0.03 46 407.03 0.00 7.00 0.06 127 407.08 0.00 7.50 0.08 252 407.17 0.00 8.00 0.11 423 407.28 0.00 8.50 0.16 659 407.43 0.00 9.00 0.23 1,007 407.66 0.00 9.50 0.29 1,485 407.97 0.00 10.00 0.41 2,101 408.38 0.00 10.50 0.61 3,009 408.98 0.00 11.00 0.98 4,417 409.90 0.00 11.50 1.87 6,889 411.84 0.00 12.00 32.23 17,657 415.74 32.72 12.50 2.96 14,264 415.16 3.28 13.00 1.83 14,003 415.11 1.90 13.50 1.39 13,914 415.09 1.43 14.00 1.09 13,841 415.08 1.15 14.50 0.97 13,784 415.07 0.99 15.00 0.87 13,751 415.06 0.89 15.50 0.77 13,717 415.05 0.79 16.00 0.68 13,683 415.05 0.70 16.50 0.63 13,663 415.04 0.64 17.00 0.60 13,651 415.04 0.60 17.50 0.56 13,639 415.04 0.57 18.00 0.53 13,626 415.04 0.53 18.50 0.49 13,614 415.03 0.50 19.00 0.46 13,602 415.03 0.46 19.50 0.42 13,589 415.03 0.43 20.00 0.38 13,577 415.03 0.39 Printed 3/11/2021 2021-03-11 Full Routing Prepared by Timmons Gro Elevation Primary (feet) (cfs) 407.00 0.00 407.06 0.00 407.12 0.00 407.18 0.00 407.24 0.00 407.30 0.00 407.36 0.00 407.42 0.00 407.48 0.00 407.54 0.00 407.60 0.00 407.66 0.00 407.72 0.00 407.78 0.00 407.84 0.00 407.90 0.00 407.96 0.00 408.02 0.00 408.08 0.00 408.14 0.00 408.20 0.00 408.26 0.00 408.32 0.00 408.38 0.00 408.44 0.00 408.50 0.00 408.56 0.00 408.62 0.00 408.68 0.00 408.74 0.00 408.80 0.00 408.86 0.00 408.92 0.00 408.98 0.00 409.04 0.00 409.10 0.00 409.16 0.00 409.22 0.00 409.28 0.00 409.34 0.00 409.40 0.00 409.46 0.00 409.52 0.00 409.58 0.00 409.64 0.00 409.70 0.00 409.76 0.00 409.82 0.00 409.88 0.00 409.94 0.00 410.00 0.00 410.06 0.00 Type/1 24-hr 10-YR Rainfall=5.58" Stage -Discharge for Pond 6P: BIORETENTION 1 Elevation Primary (feet) (cfs) 410.12 0.00 410.18 0.00 410.24 0.00 410.30 0.00 410.36 0.00 410.42 0.00 410.48 0.00 410.54 0.00 410.60 0.00 410.66 0.00 410.72 0.00 410.78 0.00 410.84 0.00 410.90 0.00 410.96 0.00 411.02 0.00 411.08 0.00 411.14 0.00 411.20 0.00 411.26 0.00 411.32 0.00 411.38 0.00 411.44 0.00 411.50 0.00 411.56 0.00 411.62 0.00 411.68 0.00 411.74 0.00 411.80 0.00 411.86 0.00 411.92 0.00 411.98 0.00 412.04 0.00 412.10 0.00 412.16 0.00 412.22 0.00 412.28 0.00 412.34 0.00 412.40 0.00 412.46 0.00 412.52 0.00 412.58 0.00 412.64 0.00 412.70 0.00 412.76 0.00 412.82 0.00 412.88 0.00 412.94 0.00 413.00 0.00 413.06 0.00 413.12 0.00 413.18 0.00 Elevation Primary (feet) (cfs) 413.24 0.00 413.30 0.00 413.36 0.00 413.42 0.00 413.48 0.00 413.54 0.00 413.60 0.00 413.66 0.00 413.72 0.00 413.78 0.00 413.84 0.00 413.90 0.00 413.96 0.00 414.02 0.00 414.08 0.00 414.14 0.00 414.20 0.00 414.26 0.00 414.32 0.00 414.38 0.00 414.44 0.00 414.50 0.00 414.56 0.00 414.62 0.00 414.68 0.00 414.74 0.00 414.80 0.00 414.86 0.00 414.92 0.00 414.98 0.00 415.04 0.41 415.10 1.62 415.16 3.29 415.22 5.30 415.28 7.61 415.34 10.18 415.40 12.99 415.46 16.03 415.52 19.26 415.58 22.69 415.64 26.30 415.70 30.08 415.76 34.03 415.82 38.14 415.88 42.61 415.94 47.90 416.00 53.71 416.06 59.94 416.12 66.57 416.18 73.54 416.24 80.86 416.30 88.48 Printed 3/11/2021 Elevation Primary (feet) (cfs) 416.36 92.19 416.42 95.41 416.48 98.87 416.54 102.61 416.60 106.54 416.66 110.69 416.72 115.14 416.78 119.80 416.84 124.69 416.90 129.68 416.96 134.85 417.02 140.22 417.08 145.85 417.14 151.76 417.20 157.88 417.26 164.18 417.32 170.43 417.38 176.86 417.44 183.47 417.50 189.88 2021-03-11 Full Routing Prepared by Timmons Gro 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 0 407.15 3,808 228 407.30 3,808 457 407.45 3,808 685 407.60 3,808 914 407.75 3,808 1,142 407.90 3,808 1,371 408.05 3,808 1,599 408.20 3,808 1,828 408.35 3,808 2,056 408.50 3,808 2,285 408.65 3,808 2,513 408.80 3,808 2,742 408.95 3,808 2,970 409.10 3,808 3,199 409.25 3,808 3,427 409.40 3,808 3,656 409.55 3,808 3,884 409.70 3,808 4,113 409.85 3,808 4,341 410.00 3,808 4,570 410.15 3,808 4,798 410.30 3,808 5,027 410.45 3,808 5,255 410.60 3,808 5,484 410.75 3,808 5,712 410.90 3,808 5,940 411.05 3,808 6,140 411.20 3,808 6,283 411.35 3,808 6,426 411.50 3,808 6,569 411.65 3,808 6,712 411.80 3,808 6,854 411.95 3,808 6,997 412.10 3,808 7,140 412.25 3,808 7,283 412.40 3,808 7,426 412.55 3,808 7,568 412.70 3,808 7,711 412.85 3,808 7,854 413.00 3,808 7,997 413.15 3,808 8,140 413.30 3,808 8,282 413.45 3,808 8,425 413.60 3,808 8,568 413.75 3,808 8,711 413.90 3,808 8,854 414.05 3,876 9,141 414.20 4,081 9,738 414.35 4,286 10,365 414.50 4,491 11,024 414.65 4,696 11,713 Elevation Surface Storage (feet) (sq-ft) (cubic -feet) 414.80 4,901 12,432 414.95 5,106 13,183 415.10 5,316 13,964 415.25 5,530 14,778 415.40 5,743 15,623 415.55 5,956 16,501 415.70 6,169 17,410 415.85 6,383 18,351 416.00 6,596 19,325 416.15 6,814 20,331 416.30 7,031 21,369 416.45 7,249 22,440 416.60 7,466 23,544 416.75 7,684 24,680 416.90 7,902 25,849 417.05 8,119 27,050 417.20 8,337 28,284 417.35 8,554 29,551 417.50 8,772 30,851 Printed 3/11/2021 2021-03-11 Full Routing Prepared by Timmons Gro Type/1 24-hr 10-YR Rainfall=5.58" Summary for Pond 8P: BIORETENTION 2 Printed 3/11/2021 Inflow Area = 1.920 ac, 54.17% Impervious, Inflow Depth > 3.26" for 10-YR event Inflow = 11.37 cfs @ 11.97 hrs, Volume= 0.521 of Outflow = 11.19 cfs @ 11.99 hrs, Volume= 0.394 af, Atten= 2%, Lag= 1.1 min Primary = 11.19 cfs @ 11.99 hrs, Volume= 0.394 of Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Peak Elev= 432.42' @ 11.99 hrs Surf.Area= 2,170 sf Storage= 6,589 cf Plug -Flow detention time= 95.9 min calculated for 0.394 of (76% of inflow) Center -of -Mass det. time= 35.2 min ( 808.4 - 773.2 ) 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 Routino Invert Outlet Devices #1 Primary 424.43' 18.0" Round HDPE_Round 18" L= 61.4' RCP, sq.cut end projecting, Ke= 0.500 Inlet / Outlet Invert= 424.43' / 423.82' S= 0.0099 '/' Cc= 0.900 n= 0.010 PVC, smooth interior, Flow Area= 1.77 sf #2 Device 1 431.91' 36.0" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads Primary OutFlow Max=10.83 cfs @ 11.99 hrs HW=432.41' (Free Discharge) L1=HDPE_Round 18" (Passes 10.83 cfs of 22.88 cfs potential flow) t2=Orifice/Grate (Weir Controls 10.83 cfs @ 2.31 fps) 2021-03-11 Full Routing Prepared by Timmons Grc i c m m W Type 1124-hr 10-YR Rainfall=5.58" Pond 8P: BIORETENTION 2 Hydrograph Time (hours) Pond 813: BIORETENTION 2 Stage -Discharge 434 433 L - 432 431 430 429428427 426 425424 6 10 12 14 16 16 20 22 24 Discharge (de) Printed 3/11/2021 ■ Inflow ■ Primary ❑ Primary 2021-03-11 Full Routing Prepared by Timmons Grc Type 1124-hr 10-YR Rainfall=5.58" Pond 8P: BIORETENTION 2 Stage -Area -Storage Storage (cubic -feet) Printed 3/11/2021 ■ Surface ■ Storage 2021-03-11 Full Routing Prepared by Timmons Gro 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 0.00 0 423.91 0.00 6.50 0.00 1 423.91 0.00 7.00 0.01 15 423.93 0.00 7.50 0.02 47 423.98 0.00 8.00 0.03 98 424.07 0.00 8.50 0.05 175 424.19 0.00 9.00 0.08 292 424.37 0.00 9.50 0.10 452 424.62 0.00 10.00 0.14 659 424.95 0.00 10.50 0.21 965 425.43 0.00 11.00 0.33 1,438 426.17 0.00 11.50 0.63 2,267 427.48 0.00 12.00 10.75 6,580 432.41 11.06 12.50 0.98 5,735 432.01 1.05 13.00 0.61 5,676 431.98 0.63 13.50 0.46 5,643 431.97 0.48 14.00 0.36 5,618 431.96 0.38 14.50 0.32 5,606 431.95 0.33 15.00 0.29 5,598 431.95 0.29 15.50 0.26 5,590 431.94 0.26 16.00 0.22 5,582 431.94 0.23 16.50 0.21 5,578 431.94 0.21 17.00 0.20 5,575 431.93 0.20 17.50 0.19 5,572 431.93 0.19 18.00 0.17 5,569 431.93 0.18 18.50 0.16 5,566 431.93 0.16 19.00 0.15 5,563 431.93 0.15 19.50 0.14 5,561 431.93 0.14 20.00 0.13 5,558 431.93 0.13 Printed 3/11/2021 2021-03-11 Full Routing Prepared by Timmons Gro Elevation Primary (feet) (cfs) 423.91 0.00 423.97 0.00 424.03 0.00 424.09 0.00 424.15 0.00 424.21 0.00 424.27 0.00 424.33 0.00 424.39 0.00 424.45 0.00 424.51 0.00 424.57 0.00 424.63 0.00 424.69 0.00 424.75 0.00 424.81 0.00 424.87 0.00 424.93 0.00 424.99 0.00 425.05 0.00 425.11 0.00 425.17 0.00 425.23 0.00 425.29 0.00 425.35 0.00 425.41 0.00 425.47 0.00 425.53 0.00 425.59 0.00 425.65 0.00 425.71 0.00 425.77 0.00 425.83 0.00 425.89 0.00 425.95 0.00 426.01 0.00 426.07 0.00 426.13 0.00 426.19 0.00 426.25 0.00 426.31 0.00 426.37 0.00 426.43 0.00 426.49 0.00 426.55 0.00 426.61 0.00 426.67 0.00 426.73 0.00 426.79 0.00 426.85 0.00 426.91 0.00 426.97 0.00 Type 1124-hr 10-YR Rainfall=5.58" Stage -Discharge for Pond 8P: BIORETENTION 2 Elevation Primary (feet) (cfs) 427.03 0.00 427.09 0.00 427.15 0.00 427.21 0.00 427.27 0.00 427.33 0.00 427.39 0.00 427.45 0.00 427.51 0.00 427.57 0.00 427.63 0.00 427.69 0.00 427.75 0.00 427.81 0.00 427.87 0.00 427.93 0.00 427.99 0.00 428.05 0.00 428.11 0.00 428.17 0.00 428.23 0.00 428.29 0.00 428.35 0.00 428.41 0.00 428.47 0.00 428.53 0.00 428.59 0.00 428.65 0.00 428.71 0.00 428.77 0.00 428.83 0.00 428.89 0.00 428.95 0.00 429.01 0.00 429.07 0.00 429.13 0.00 429.19 0.00 429.25 0.00 429.31 0.00 429.37 0.00 429.43 0.00 429.49 0.00 429.55 0.00 429.61 0.00 429.67 0.00 429.73 0.00 429.79 0.00 429.85 0.00 429.91 0.00 429.97 0.00 430.03 0.00 430.09 0.00 Elevation Primary (feet) (cfs) 430.15 0.00 430.21 0.00 430.27 0.00 430.33 0.00 430.39 0.00 430.45 0.00 430.51 0.00 430.57 0.00 430.63 0.00 430.69 0.00 430.75 0.00 430.81 0.00 430.87 0.00 430.93 0.00 430.99 0.00 431.05 0.00 431.11 0.00 431.17 0.00 431.23 0.00 431.29 0.00 431.35 0.00 431.41 0.00 431.47 0.00 431.53 0.00 431.59 0.00 431.65 0.00 431.71 0.00 431.77 0.00 431.83 0.00 431.89 0.00 431.95 0.25 432.01 0.97 432.07 1.97 432.13 3.18 432.19 4.57 432.25 6.11 432.31 7.80 432.37 9.62 432.43 11.56 432.49 13.61 432.55 15.78 432.61 18.05 432.67 20.42 432.73 22.88 432.79 23.47 432.85 23.56 432.91 23.66 432.97 23.75 433.03 23.84 433.09 23.93 433.15 24.02 433.21 24.11 Printed 3/11/2021 Elevation Primary (feet) (cfs) 433.27 24.20 433.33 24.29 433.39 24.38 433.45 24.47 433.51 24.56 433.57 24.65 433.63 24.73 433.69 24.82 433.75 24.91 433.81 25.00 433.87 25.08 433.93 25.17 433.99 25.26 2021-03-11 Full Routing Prepared by Timmons Gro 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 3/11/2021 2021-03-11 Full Routing Prepared by Timmons Gro Type/1 24-hr 10-YR Rainfall=5.58" Summary for Pond 10P: DRY POND Printed 3/11/2021 Inflow Area = 7.010 ac, 60.49% Impervious, Inflow Depth > 3.45" for 10-YR event Inflow = 43.50 cfs @ 11.97 hrs, Volume= 2.017 of Outflow = 37.35 cfs @ 12.00 hrs, Volume= 1.836 af, Atten= 14%, Lag= 2.2 min Primary = 37.35 cfs @ 12.00 hrs, Volume= 1.836 of Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Peak Elev= 424.99' @ 12.00 hrs Surf.Area= 4,731 sf Storage= 22,063 cf Plug -Flow detention time= 84.0 min calculated for 1.836 of (91% of inflow) Center -of -Mass det. time= 52.5 min ( 821.3 - 768.8 ) Volume Invert Avail.Storage Storage Description #1 418.00' 29,593 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic -feet) (cubic -feet) 418.00 1,493 0 0 419.00 1,914 1,704 1,704 420.00 2,380 2,147 3,851 421.00 2,888 2,634 6,485 422.00 3,430 3,159 9,644 423.00 3,995 3,713 13,356 424.00 4,379 4,187 17,543 425.00 4,734 4,557 22,100 426.00 5,058 4,896 26,996 426.50 5,330 2,597 29,593 Device Routino Invert Outlet Devices #1 Primary 417.90' 24.0" Round Culvert L= 117.9' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 417.90' / 417.01' S= 0.0075 '/' Cc= 0.900 n= 0.010 PVC, smooth interior, Flow Area= 3.14 sf #2 Device 1 418.00' 4.0" W x 4.2" H Vert. Orifice/Grate C= 0.600 #3 Device 1 423.92' 60.0" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #4 Primary 424.99' 45.0' long x 5.0' breadth Broad -Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 Primary OutFlow Max=37.31 cfs @ 12.00 hrs HW=424.98' (Free Discharge) 1_Cu lvert (Inlet Controls 37.31 cfs @ 11.87 fps) �2=Orifice/Grate (Passes < 1.47 cfs potential flow) 3=Orifice/Grate (Passes < 56.23 cfs potential flow) =Broad -Crested Rectangular Weir ( Controls 0.00 cfs) 2021-03-11 Full Routing Prepared by Timmons Grc 42 42 42 42 c 0 m 42 W 42 42 41 41 0 Type 1124-hr 10-YR Rainfall=5.58" Printed 3/11/2021 LC Pape 69 Pond 10P: DRY POND Hydrograph Time (hours) Pond 10P: DRY POND Stage -Discharge 8 LU 4U UU aU lUU l[U 14U 1w laU LUU LLU 24U L(jU Discharge ids) Fill—, —fl M ■ Primary 0 Primary 2021-03-11 Full Routing Prepared by Timmons Grc 42 42 42 42 c 0 m 4 W 42 42 41 41 Type 1124-hr 10-YR Rainfall=5.58" Printed 3/11/2021 Pond 10P: DRY POND Stage -Area -Storage Surface/Horizontal/Wetted Area (sq-ft) n snn 1 nnn 1 5nn 2 nnn 2 snn n nnn s 5nn a nnn a snn 5 nnn 22 6 5 4 3 1 0 y Custom Stage Data S 0 5,000 10,000 15,000 20.000 25,000 Storage (cubic -feet) Surface ❑ Storage 2021-03-11 Full Routing Prepared by Timmons Gro Type/1 24-hr 10-YR Rainfall=5.58" Hydrograph for Pond 10P: DRY POND Time Inflow Storage Elevation Primary (hours) (cfs) (cubic -feet) (feet) (cfs) 5.00 0.00 0 418.00 0.00 5.50 0.00 0 418.00 0.00 6.00 0.02 9 418.01 0.00 6.50 0.05 62 418.04 0.01 7.00 0.09 153 418.10 0.04 7.50 0.13 257 418.17 0.07 8.00 0.18 359 418.23 0.12 8.50 0.26 473 418.30 0.18 9.00 0.36 634 418.40 0.26 9.50 0.44 833 418.52 0.33 10.00 0.60 1,100 418.67 0.39 10.50 0.87 1,614 418.95 0.49 11.00 1.36 2,587 419.44 0.63 11.50 2.54 4,679 420.34 0.83 12.00 41.00 22,059 424.99 37.35 12.50 3.71 17,791 424.06 4.02 13.00 2.28 17,513 423.99 2.39 13.50 1.73 17,368 423.96 1.80 14.00 1.36 17,245 423.93 1.45 14.50 1.20 17,074 423.89 1.34 15.00 1.08 16,725 423.81 1.33 15.50 0.96 16,180 423.68 1.32 16.00 0.84 15,449 423.51 1.30 16.50 0.78 14,588 423.30 1.27 17.00 0.74 13,694 423.08 1.24 17.50 0.70 12,774 422.85 1.21 18.00 0.65 11,831 422.61 1.18 18.50 0.61 10,870 422.35 1.15 19.00 0.57 9,896 422.07 1.11 19.50 0.52 8,915 421.78 1.07 20.00 0.48 7,932 421.48 1.02 Printed 3/11/2021 2021-03-11 Full Routing Prepared by Timmons Gro Elevation Primary (feet) (cfs) 418.00 0.00 418.10 0.03 418.20 0.10 418.30 0.18 418.40 0.26 418.50 0.32 418.60 0.36 418.70 0.41 418.80 0.44 418.90 0.48 419.00 0.51 419.10 0.54 419.20 0.57 419.30 0.60 419.40 0.62 419.50 0.65 419.60 0.67 419.70 0.69 419.80 0.72 419.90 0.74 420.00 0.76 420.10 0.78 420.20 0.80 420.30 0.82 420.40 0.84 420.50 0.86 420.60 0.87 420.70 0.89 420.80 0.91 420.90 0.93 421.00 0.94 421.10 0.96 421.20 0.98 421.30 0.99 421.40 1.01 421.50 1.02 421.60 1.04 421.70 1.05 421.80 1.07 421.90 1.08 422.00 1.10 422.10 1.11 422.20 1.13 422.30 1.14 422.40 1.15 422.50 1.17 422.60 1.18 422.70 1.19 422.80 1.21 422.90 1.22 423.00 1.23 423.10 1.25 Type/1 24-hr 10-YR Rainfall=5.58" Stage -Discharge for Pond 10P: DRY POND Elevation Primary (feet) (cfs) 423.20 1.26 423.30 1.27 423.40 1.28 423.50 1.30 423.60 1.31 423.70 1.32 423.80 1.33 423.90 1.34 424.00 2.52 424.10 5.29 424.20 8.99 424.30 13.42 424.40 18.48 424.50 24.10 424.60 30.23 424.70 36.43 424.80 36.74 424.90 37.05 425.00 37.47 425.10 41.51 425.20 48.14 425.30 57.13 425.40 68.22 425.50 81.64 425.60 97.02 425.70 111.84 425.80 127.65 425.90 144.71 426.00 162.67 426.10 181.05 426.20 200.16 426.30 220.25 426.40 241.08 426.50 262.97 Printed 3/11/2021 2021-03-11 Full Routing Prepared by Timmons Grc Type /l 24-hr 10-YR Rainfall=5.58" Stage -Area -Storage for Pond 10P: DRY POND Elevation Surface Storage (feet) (sq-ft) (cubic -feet) 418.00 1,493 0 418.10 1,535 151 418.20 1,577 307 418.30 1,619 467 418.40 1,661 631 418.50 1,704 799 418.60 1,746 972 418.70 1,788 1,148 418.80 1,830 1,329 418.90 1,872 1,514 419.00 1,914 1,704 419.10 1,961 1,897 419.20 2,007 2,096 419.30 2,054 2,299 419.40 2,100 2,506 419.50 2,147 2,719 419.60 2,194 2,936 419.70 2,240 3,157 419.80 2,287 3,384 419.90 2,333 3,615 420.00 2,380 3,851 420.10 2,431 4,091 420.20 2,482 4,337 420.30 2,532 4,587 420.40 2,583 4,843 420.50 2,634 5,104 420.60 2,685 5,370 420.70 2,736 5,641 420.80 2,786 5,917 420.90 2,837 6,198 421.00 2,888 6,485 421.10 2,942 6,776 421.20 2,996 7,073 421.30 3,051 7,375 421.40 3,105 7,683 421.50 3,159 7,996 421.60 3,213 8,315 421.70 3,267 8,639 421.80 3,322 8,968 421.90 3,376 9,303 422.00 3,430 9,644 422.10 3,487 9,989 422.20 3,543 10,341 422.30 3,600 10,698 422.40 3,656 11,061 422.50 3,713 11,429 422.60 3,769 11,803 422.70 3,825 12,183 422.80 3,882 12,568 422.90 3,938 12,959 423.00 3,995 13,356 423.10 4,033 13,757 Elevation Surface Storage (feet) (sq-ft) (cubic -feet) 423.20 4,072 14,163 423.30 4,110 14,572 423.40 4,149 14,985 423.50 4,187 15,402 423.60 4,225 15,822 423.70 4,264 16,247 423.80 4,302 16,675 423.90 4,341 17,107 424.00 4,379 17,543 424.10 4,415 17,983 424.20 4,450 18,426 424.30 4,486 18,873 424.40 4,521 19,323 424.50 4,557 19,777 424.60 4,592 20,234 424.70 4,627 20,695 424.80 4,663 21,160 424.90 4,698 21,628 425.00 4,734 22,100 425.10 4,766 22,575 425.20 4,799 23,053 425.30 4,831 23,534 425.40 4,864 24,019 425.50 4,896 24,507 425.60 4,928 24,998 425.70 4,961 25,493 425.80 4,993 25,990 425.90 5,026 26,491 426.00 5,058 26,996 426.10 5,112 27,504 426.20 5,167 28,018 426.30 5,221 28,537 426.40 5,276 29,062 426.50 6,330 29,593 Printed 3/11/2021 2021-03-11 Full Routing Prepared by Timmons Gro Type/1 24-hr 10-YR Rainfall=5.58" Printed 3/11/2021 Summary for Link 3L: PRE Combined Inflow Area = 16.080 ac, 4.48% Impervious, Inflow Depth > 1.65" for 10-YR event Inflow = 50.48 cfs @ 11.98 hrs, Volume= 2.209 of Primary = 50.48 cfs @ 11.98 hrs, Volume= 2.209 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Link 3L: PRE Combined Hydrograph ■ h fim— ■ Primary Time (horns) 2021-03-11 Full Routing Prepared by Timmons Gro Type/1 24-hr 10-YR Rainfall=5.58" Hydrograph for Link 3L: PRE Combined Time Inflow Elevation Primary (hours) (cfs) (feet) (cfs) 5.00 0.00 0.00 0.00 5.25 0.00 0.00 0.00 5.50 0.00 0.00 0.00 5.75 0.00 0.00 0.00 6.00 0.00 0.00 0.00 6.25 0.00 0.00 0.00 6.50 0.00 0.00 0.00 6.75 0.00 0.00 0.00 7.00 0.00 0.00 0.00 7.25 0.00 0.00 0.00 7.50 0.00 0.00 0.00 7.75 0.00 0.00 0.00 8.00 0.00 0.00 0.00 8.25 0.00 0.00 0.00 8.50 0.00 0.00 0.00 8.75 0.00 0.00 0.00 9.00 0.01 0.00 0.01 9.25 0.02 0.00 0.02 9.50 0.02 0.00 0.02 9.75 0.03 0.00 0.03 10.00 0.04 0.00 0.04 10.25 0.06 0.00 0.06 10.50 0.07 0.00 0.07 10.75 0.10 0.00 0.10 11.00 0.15 0.00 0.15 11.25 0.43 0.00 0.43 11.50 0.95 0.00 0.95 11.75 8.45 0.00 8.45 12.00 48.97 0.00 48.97 12.25 7.80 0.00 7.80 12.50 5.21 0.00 5.21 12.75 3.89 0.00 3.89 13.00 3.31 0.00 3.31 13.25 2.89 0.00 2.89 13.50 2.56 0.00 2.56 13.75 2.29 0.00 2.29 14.00 2.04 0.00 2.04 14.25 1.90 0.00 1.90 14.50 1.82 0.00 1.82 14.75 1.74 0.00 1.74 15.00 1.66 0.00 1.66 15.25 1.57 0.00 1.57 15.50 1.48 0.00 1.48 15.75 1.40 0.00 1.40 16.00 1.30 0.00 1.30 16.25 1.25 0.00 1.25 16.50 1.22 0.00 1.22 16.75 1.19 0.00 1.19 17.00 1.16 0.00 1.16 17.25 1.13 0.00 1.13 17.50 1.10 0.00 1.10 17.75 1.07 0.00 1.07 Time Inflow Elevation Primary (hours) (cfs) (feet) (cfs) 18.00 1.04 0.00 1.04 18.25 1.00 0.00 1.00 18.50 0.97 0.00 0.97 18.75 0.94 0.00 0.94 19.00 0.90 0.00 0.90 19.25 0.87 0.00 0.87 19.50 0.84 0.00 0.84 19.75 0.80 0.00 0.80 20.00 0.77 0.00 0.77 Printed 3/11/2021 2021-03-11 Full Routing Prepared by Timmons Gro Type/1 24-hr 10-YR Rainfall=5.58" Printed 3/11/2021 Summary for Link 13L: POST Combined Inflow Area = 16.220 ac, 55.49% Impervious, Inflow Depth > 2.82" for 10-YR event Inflow = 88.46 cfs @ 11.99 hrs, Volume= 3.817 of Primary = 88.46 cfs @ 11.99 hrs, Volume= 3.817 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Link 13L: POST Combined Hydrograph ■ hifim— ■ Primary Time (hours) 2021-03-11 Full Routing Prepared by Timmons Gro Type/1 24-hr 10-YR Rainfall=5.58" Hydrograph for Link 13L: POST Combined Time Inflow Elevation Primary (hours) (cfs) (feet) (cfs) 5.00 0.00 0.00 0.00 5.25 0.00 0.00 0.00 5.50 0.00 0.00 0.00 5.75 0.00 0.00 0.00 6.00 0.00 0.00 0.00 6.25 0.01 0.00 0.01 6.50 0.02 0.00 0.02 6.75 0.03 0.00 0.03 7.00 0.04 0.00 0.04 7.25 0.06 0.00 0.06 7.50 0.09 0.00 0.09 7.75 0.11 0.00 0.11 8.00 0.14 0.00 0.14 8.25 0.17 0.00 0.17 8.50 0.21 0.00 0.21 8.75 0.25 0.00 0.25 9.00 0.30 0.00 0.30 9.25 0.34 0.00 0.34 9.50 0.37 0.00 0.37 9.75 0.41 0.00 0.41 10.00 0.46 0.00 0.46 10.25 0.52 0.00 0.52 10.50 0.60 0.00 0.60 10.75 0.69 0.00 0.69 11.00 0.81 0.00 0.81 11.25 0.96 0.00 0.96 11.50 1.18 0.00 1.18 11.75 3.01 0.00 3.01 12.00 88.11 0.00 88.11 12.25 14.27 0.00 14.27 12.50 9.01 0.00 9.01 12.75 6.33 0.00 6.33 13.00 5.33 0.00 5.33 13.25 4.56 0.00 4.56 13.50 4.02 0.00 4.02 13.75 3.56 0.00 3.56 14.00 3.22 0.00 3.22 14.25 2.96 0.00 2.96 14.50 2.87 0.00 2.87 14.75 2.80 0.00 2.80 15.00 2.72 0.00 2.72 15.25 2.63 0.00 2.63 15.50 2.55 0.00 2.55 15.75 2.46 0.00 2.46 16.00 2.38 0.00 2.38 16.25 2.31 0.00 2.31 16.50 2.26 0.00 2.26 16.75 2.22 0.00 2.22 17.00 2.18 0.00 2.18 17.25 2.14 0.00 2.14 17.50 2.10 0.00 2.10 17.75 2.06 0.00 2.06 Time Inflow Elevation Primary (hours) (cfs) (feet) (cfs) 18.00 2.01 0.00 2.01 18.25 1.97 0.00 1.97 18.50 1.92 0.00 1.92 18.75 1.88 0.00 1.88 19.00 1.83 0.00 1.83 19.25 1.78 0.00 1.78 19.50 1.73 0.00 1.73 19.75 1.68 0.00 1.68 20.00 1.63 0.00 1.63 Printed 3/11/2021 2021-03-11 Full Routing Prepared by Timmons Gro Type II 24-hr 100-YR Rainfall=9.16" Printed 3/11/2021 Summary for Subcatchment 1S: PRE Onsite Runoff = 109.22 cfs @ 11.97 hrs, Volume= 4.849 af, Depth> 4.00" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24-hr 100-YR Rainfall=9.16" Area (ac) CN Description 0.210 98 Paved parking, HSG B 0.000 61 >75% Grass cover, Good, HSG B 14.350 60 Woods, Fair, HSG B 14.560 61 Weighted Average 14.350 98.56% Pervious Area 0.210 1.44% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 1S: PRE Onsite Hydrograph � wwww wwwwww wwwww wwwww wwwww wwwww wwwww I® wwwwwww w■ L77i" I wt,1I 1 M wI111111ii�ww � t • - >i . I r:�■ 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Time (hours) ■ Rurwff 2021-03-11 Full Routing Prepared by Timmons Gro Type II 24-hr 100-YR Rainfall=9.16" Hydrograph for Subcatchment 1S: PRE Onsite Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 5.00 0.58 0.00 0.00 5.25 0.61 0.00 0.00 5.50 0.65 0.00 0.00 5.75 0.69 0.00 0.00 6.00 0.73 0.00 0.00 6.25 0.77 0.00 0.00 6.50 0.82 0.00 0.00 6.75 0.86 0.00 0.00 7.00 0.91 0.00 0.00 7.25 0.95 0.00 0.00 7.50 1.00 0.00 0.00 7.75 1.05 0.00 0.00 8.00 1.10 0.00 0.00 8.25 1.15 0.00 0.00 8.50 1.21 0.00 0.00 8.75 1.28 0.00 0.00 9.00 1.35 0.00 0.05 9.25 1.42 0.00 0.15 9.50 1.49 0.01 0.24 9.75 1.57 0.01 0.36 10.00 1.66 0.02 0.52 10.25 1.76 0.03 0.73 10.50 1.87 0.05 1.01 10.75 2.00 0.07 1.42 11.00 2.15 0.11 1.96 11.25 2.34 0.15 2.93 11.50 2.59 0.22 4.40 11.75 3.54 0.59 26.06 12.00 6.07 2.05 105.17 12.25 6.47 2.32 15.58 12.50 6.73 2.51 10.24 12.75 6.92 2.64 7.58 13.00 7.07 2.75 6.39 13.25 7.20 2.85 5.55 13.50 7.32 2.93 4.89 13.75 7.42 3.01 4.35 14.00 7.51 3.08 3.88 14.25 7.59 3.14 3.60 14.50 7.67 3.20 3.44 14.75 7.75 3.25 3.28 15.00 7.82 3.31 3.11 15.25 7.88 3.36 2.94 15.50 7.95 3.40 2.77 15.75 8.01 3.45 2.60 16.00 8.06 3.49 2.43 16.25 8.11 3.53 2.33 16.50 8.16 3.57 2.27 16.75 8.21 3.61 2.21 17.00 8.26 3.64 2.15 17.25 8.31 3.68 2.09 17.50 8.35 3.71 2.03 17.75 8.39 3.75 1.97 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 18.00 8.44 3.78 1.90 18.25 8.48 3.81 1.84 18.50 8.52 3.84 1.78 18.75 8.55 3.87 1.72 19.00 8.59 3.90 1.65 19.25 8.62 3.93 1.59 19.50 8.66 3.95 1.53 19.75 8.69 3.98 1.46 20.00 8.72 4.00 1.40 Printed 3/11/2021 2021-03-11 Full Routing Prepared by Timmons Gro Type II 24-hr 100-YR Rainfall=9.16" Summary for Subcatchment 2S: Pre Offsite Runoff = 14.99 cfs @ 11.97 hrs, Volume= 0.690 af, Depth> 5.45" Printed 3/11/2021 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 0.510 98 Paved parking, HSG B 0.000 61 >75% Grass cover, Good, HSG B 1.010 60 Woods, Fair, HSG B 1.520 73 Weighted Average 1.010 66.45% Pervious Area 0.510 33.55% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 2S: Pre Offsite Hydrograph ■ Rurwff Time (hours) 2021-03-11 Full Routing Prepared by Timmons Gro Type II 24-hr 100-YR Rainfall=9.16" Hydrograph for Subcatchment 2S: Pre Mite Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 5.00 0.58 0.00 0.00 5.25 0.61 0.00 0.00 5.50 0.65 0.00 0.00 5.75 0.69 0.00 0.00 6.00 0.73 0.00 0.00 6.25 0.77 0.00 0.00 6.50 0.82 0.00 0.01 6.75 0.86 0.00 0.01 7.00 0.91 0.01 0.02 7.25 0.95 0.01 0.03 7.50 1.00 0.02 0.03 7.75 1.05 0.02 0.04 8.00 1.10 0.03 0.05 8.25 1.15 0.04 0.06 8.50 1.21 0.05 0.08 8.75 1.28 0.07 0.09 9.00 1.35 0.09 0.11 9.25 1.42 0.11 0.12 9.50 1.49 0.13 0.14 9.75 1.57 0.15 0.16 10.00 1.66 0.18 0.19 10.25 1.76 0.22 0.23 10.50 1.87 0.26 0.28 10.75 2.00 0.32 0.35 11.00 2.15 0.39 0.45 11.25 2.34 0.49 0.61 11.50 2.59 0.62 0.84 11.75 3.54 1.21 4.33 12.00 6.07 3.15 14.17 12.25 6.47 3.48 1.99 12.50 6.73 3.71 1.29 12.75 6.92 3.86 0.95 13.00 7.07 4.00 0.80 13.25 7.20 4.11 0.69 13.50 7.32 4.21 0.61 13.75 7.42 4.30 0.54 14.00 7.51 4.38 0.48 14.25 7.59 4.45 0.44 14.50 7.67 4.52 0.42 14.75 7.75 4.59 0.40 15.00 7.82 4.65 0.38 15.25 7.88 4.71 0.36 15.50 7.95 4.76 0.34 15.75 8.01 4.82 0.32 16.00 8.06 4.86 0.29 16.25 8.11 4.91 0.28 16.50 8.16 4.95 0.27 16.75 8.21 5.00 0.27 17.00 8.26 5.04 0.26 17.25 8.31 5.08 0.25 17.50 8.35 5.12 0.24 17.75 8.39 5.16 0.24 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 18.00 8.44 5.20 0.23 18.25 8.48 5.23 0.22 18.50 8.52 5.27 0.21 18.75 8.55 5.30 0.21 19.00 8.59 5.34 0.20 19.25 8.62 5.37 0.19 19.50 8.66 5.40 0.18 19.75 8.69 5.43 0.17 20.00 8.72 5.45 0.17 Printed 3/11/2021 2021-03-11 Full Routing Prepared by Timmons Gro Type II 24-hr 100-YR Rainfall=9.16" Printed 3/11/2021 Summary for Subcatchment 4S: Onsite To Bioretention 1 Runoff = 49.60 cfs @ 11.96 hrs, Volume= 2.399 af, Depth> 6.65" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24-hr 100-YR Rainfall=9.16" Area (ac) CN Description 2.640 98 Paved parking, HSG B 1.430 61 >75% Grass cover, Good, HSG B 0.260 60 Woods, Fair, HSG B 4.330 83 Weighted Average 1.690 39.03% Pervious Area 2.640 60.97% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, 55 50 45 40 35 N � 30 3 LL 25 20 15 10 j 0 Subcatchment 4S: Onsite To Bioretention 1 Hydrograph Time (hours) ■ Rurwff 2021-03-11 Full Routing Prepared by Timmons Gro Type II 24-hr 100-YR Rainfall=9.16" Hydrograph for Subcatchment 4S: Onsite To Bioretention 1 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 5.00 0.58 0.01 0.09 5.25 0.61 0.02 0.11 5.50 0.65 0.03 0.13 5.75 0.69 0.03 0.15 6.00 0.73 0.04 0.17 6.25 0.77 0.06 0.20 6.50 0.82 0.07 0.22 6.75 0.86 0.08 0.25 7.00 0.91 0.10 0.27 7.25 0.95 0.11 0.30 7.50 1.00 0.13 0.32 7.75 1.05 0.15 0.35 8.00 1.10 0.17 0.38 8.25 1.15 0.20 0.43 8.50 1.21 0.23 0.50 8.75 1.28 0.26 0.57 9.00 1.35 0.29 0.65 9.25 1.42 0.33 0.70 9.50 1.49 0.37 0.72 9.75 1.57 0.42 0.81 10.00 1.66 0.47 0.93 10.25 1.76 0.53 1.10 10.50 1.87 0.61 1.29 10.75 2.00 0.69 1.57 11.00 2.15 0.80 1.91 11.25 2.34 0.94 2.53 11.50 2.59 1.13 3.35 11.75 3.54 1.90 16.01 12.00 6.07 4.16 46.27 12.25 6.47 4.53 6.30 12.50 6.73 4.78 4.06 12.75 6.92 4.95 2.97 13.00 7.07 5.10 2.49 13.25 7.20 5.22 2.14 13.50 7.32 5.33 1.88 13.75 7.42 5.43 1.66 14.00 7.51 5.51 1.48 14.25 7.59 5.59 1.36 14.50 7.67 5.67 1.30 14.75 7.75 5.74 1.23 15.00 7.82 5.80 1.17 15.25 7.88 5.87 1.10 15.50 7.95 5.93 1.04 15.75 8.01 5.98 0.97 16.00 8.06 6.04 0.90 16.25 8.11 6.09 0.86 16.50 8.16 6.13 0.84 16.75 8.21 6.18 0.82 17.00 8.26 6.23 0.79 17.25 8.31 6.27 0.77 17.50 8.35 6.31 0.75 17.75 8.39 6.35 0.72 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 18.00 8.44 6.39 0.70 18.25 8.48 6.43 0.68 18.50 8.52 6.47 0.65 18.75 8.55 6.51 0.63 19.00 8.59 6.54 0.60 19.25 8.62 6.58 0.58 19.50 8.66 6.61 0.56 19.75 8.69 6.64 0.53 20.00 8.72 6.67 0.51 Printed 3/11/2021 2021-03-11 Full Routing Prepared by Timmons Gro Type II 24-hr 100-YR Rainfall=9.16" Summary for Subcatchment 5S: Mite To Bioretention 1 Runoff = 14.99 cfs @ 11.97 hrs, Volume= 0.690 af, Depth> 5.45" Printed 3/11/2021 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 0.510 98 Paved parking, HSG B 0.000 61 >75% Grass cover, Good, HSG B 1.010 60 Woods, Fair, HSG B 1.520 73 Weighted Average 1.010 66.45% Pervious Area 0.510 33.55% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 5S: Mite To Bioretention 1 Hydrograph ■ Rurwff Time (hours) 2021-03-11 Full Routing Prepared by Timmons Gro Type II 24-hr 100-YR Rainfall=9.16" Hydrograph for Subcatchment 5S: Offsite To Bioretention 1 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 5.00 0.58 0.00 0.00 5.25 0.61 0.00 0.00 5.50 0.65 0.00 0.00 5.75 0.69 0.00 0.00 6.00 0.73 0.00 0.00 6.25 0.77 0.00 0.00 6.50 0.82 0.00 0.01 6.75 0.86 0.00 0.01 7.00 0.91 0.01 0.02 7.25 0.95 0.01 0.03 7.50 1.00 0.02 0.03 7.75 1.05 0.02 0.04 8.00 1.10 0.03 0.05 8.25 1.15 0.04 0.06 8.50 1.21 0.05 0.08 8.75 1.28 0.07 0.09 9.00 1.35 0.09 0.11 9.25 1.42 0.11 0.12 9.50 1.49 0.13 0.14 9.75 1.57 0.15 0.16 10.00 1.66 0.18 0.19 10.25 1.76 0.22 0.23 10.50 1.87 0.26 0.28 10.75 2.00 0.32 0.35 11.00 2.15 0.39 0.45 11.25 2.34 0.49 0.61 11.50 2.59 0.62 0.84 11.75 3.54 1.21 4.33 12.00 6.07 3.15 14.17 12.25 6.47 3.48 1.99 12.50 6.73 3.71 1.29 12.75 6.92 3.86 0.95 13.00 7.07 4.00 0.80 13.25 7.20 4.11 0.69 13.50 7.32 4.21 0.61 13.75 7.42 4.30 0.54 14.00 7.51 4.38 0.48 14.25 7.59 4.45 0.44 14.50 7.67 4.52 0.42 14.75 7.75 4.59 0.40 15.00 7.82 4.65 0.38 15.25 7.88 4.71 0.36 15.50 7.95 4.76 0.34 15.75 8.01 4.82 0.32 16.00 8.06 4.86 0.29 16.25 8.11 4.91 0.28 16.50 8.16 4.95 0.27 16.75 8.21 5.00 0.27 17.00 8.26 5.04 0.26 17.25 8.31 5.08 0.25 17.50 8.35 5.12 0.24 17.75 8.39 5.16 0.24 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 18.00 8.44 5.20 0.23 18.25 8.48 5.23 0.22 18.50 8.52 5.27 0.21 18.75 8.55 5.30 0.21 19.00 8.59 5.34 0.20 19.25 8.62 5.37 0.19 19.50 8.66 5.40 0.18 19.75 8.69 5.43 0.17 20.00 8.72 5.45 0.17 Printed 3/11/2021 2021-03-11 Full Routing Prepared by Timmons Gro Type II 24-hr 100-YR Rainfall=9.16" Printed 3/11/2021 Summary for Subcatchment 7S: To Bioretention 2 Runoff = 21.45 cfs @ 11.97 hrs, Volume= 1.026 af, Depth> 6.41" 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 0.840 61 >75% Grass cover, Good, HSG B 0.040 60 Woods, Fair, HSG B 1.920 81 Weighted Average 0.880 45.83% Pervious Area 1.040 54.17% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 7S: To Bioretention 2 Hydrograph 24 23 _.._ _ _ ■ Rurwff 22 21 21 45 dl Type II 24-hr 29 19 - 100-YR Rainfall=9.16" 18 17 + Runoff Area=1.920 ac 16 15 '' -- - Runoff Volume=1.026 of .13 Runoff Depth>6.41" 3 12 211 Tc=6.0 min 5 6 7 8 9 19 11 12 13 14 15 16 17 18 19 Time (hours) 2021-03-11 Full Routing Prepared by Timmons Gro Type II 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 0.00 0.02 5.25 0.61 0.01 0.03 5.50 0.65 0.01 0.04 5.75 0.69 0.02 0.05 6.00 0.73 0.03 0.06 6.25 0.77 0.04 0.07 6.50 0.82 0.05 0.08 6.75 0.86 0.06 0.09 7.00 0.91 0.07 0.10 7.25 0.95 0.08 0.11 7.50 1.00 0.10 0.12 7.75 1.05 0.12 0.13 8.00 1.10 0.13 0.14 8.25 1.15 0.15 0.16 8.50 1.21 0.18 0.19 8.75 1.28 0.21 0.22 9.00 1.35 0.24 0.25 9.25 1.42 0.27 0.28 9.50 1.49 0.31 0.29 9.75 1.57 0.35 0.32 10.00 1.66 0.40 0.38 10.25 1.76 0.46 0.45 10.50 1.87 0.52 0.53 10.75 2.00 0.60 0.65 11.00 2.15 0.70 0.79 11.25 2.34 0.83 1.05 11.50 2.59 1.01 1.40 11.75 3.54 1.74 6.79 12.00 6.07 3.95 20.06 12.25 6.47 4.31 2.75 12.50 6.73 4.56 1.77 12.75 6.92 4.73 1.30 13.00 7.07 4.87 1.09 13.25 7.20 4.99 0.94 13.50 7.32 5.10 0.82 13.75 7.42 5.20 0.73 14.00 7.51 5.28 0.65 14.25 7.59 5.36 0.60 14.50 7.67 5.43 0.57 14.75 7.75 5.50 0.54 15.00 7.82 5.57 0.51 15.25 7.88 5.63 0.48 15.50 7.95 5.69 0.45 15.75 8.01 5.75 0.42 16.00 8.06 5.80 0.40 16.25 8.11 5.85 0.38 16.50 8.16 5.90 0.37 16.75 8.21 5.94 0.36 17.00 8.26 5.99 0.35 17.25 8.31 6.03 0.34 17.50 8.35 6.07 0.33 17.75 8.39 6.12 0.32 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 18.00 8.44 6.16 0.31 18.25 8.48 6.19 0.30 18.50 8.52 6.23 0.29 18.75 8.55 6.27 0.28 19.00 8.59 6.30 0.26 19.25 8.62 6.33 0.25 19.50 8.66 6.37 0.24 19.75 8.69 6.40 0.23 20.00 8.72 6.42 0.22 Printed 3/11/2021 2021-03-11 Full Routing Prepared by Timmons Gro Type II 24-hr 100-YR Rainfall=9.16" Printed 3/11/2021 Summary for Subcatchment 9S: To Dry Pond Runoff = 80.29 cfs @ 11.96 hrs, Volume= 3.884 af, Depth> 6.65" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24-hr 100-YR Rainfall=9.16" Area (ac) CN Description 4.240 98 Paved parking, HSG B 2.770 61 >75% Grass cover, Good, HSG B 0.000 60 Woods, Fair, HSG B 7.010 83 Weighted Average 2.770 39.51 % Pervious Area 4.240 60.49% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, 85 80 75 70 65 60 55 w 50 V 3 45 LL 40 35 30 25 20 15 10 5 0 Subcatchment 9S: To Dry Pond Hydrograph Time (hours) ■ Runoff 2021-03-11 Full Routing Prepared by Timmons Gro Type II 24-hr 100-YR Rainfall=9.16" Hydrograph for Subcatchment 9S: To Dry Pond Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 5.00 0.58 0.01 0.14 5.25 0.61 0.02 0.17 5.50 0.65 0.03 0.21 5.75 0.69 0.03 0.24 6.00 0.73 0.04 0.28 6.25 0.77 0.06 0.32 6.50 0.82 0.07 0.36 6.75 0.86 0.08 0.40 7.00 0.91 0.10 0.44 7.25 0.95 0.11 0.48 7.50 1.00 0.13 0.53 7.75 1.05 0.15 0.57 8.00 1.10 0.17 0.61 8.25 1.15 0.20 0.69 8.50 1.21 0.23 0.80 8.75 1.28 0.26 0.92 9.00 1.35 0.29 1.05 9.25 1.42 0.33 1.13 9.50 1.49 0.37 1.17 9.75 1.57 0.42 1.31 10.00 1.66 0.47 1.51 10.25 1.76 0.53 1.78 10.50 1.87 0.61 2.10 10.75 2.00 0.69 2.54 11.00 2.15 0.80 3.09 11.25 2.34 0.94 4.09 11.50 2.59 1.13 5.43 11.75 3.54 1.90 25.92 12.00 6.07 4.16 74.91 12.25 6.47 4.53 10.20 12.50 6.73 4.78 6.57 12.75 6.92 4.95 4.81 13.00 7.07 5.10 4.02 13.25 7.20 5.22 3.47 13.50 7.32 5.33 3.04 13.75 7.42 5.43 2.69 14.00 7.51 5.51 2.39 14.25 7.59 5.59 2.21 14.50 7.67 5.67 2.10 14.75 7.75 5.74 2.00 15.00 7.82 5.80 1.89 15.25 7.88 5.87 1.78 15.50 7.95 5.93 1.68 15.75 8.01 5.98 1.57 16.00 8.06 6.04 1.46 16.25 8.11 6.09 1.40 16.50 8.16 6.13 1.36 16.75 8.21 6.18 1.32 17.00 8.26 6.23 1.28 17.25 8.31 6.27 1.25 17.50 8.35 6.31 1.21 17.75 8.39 6.35 1.17 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 18.00 8.44 6.39 1.13 18.25 8.48 6.43 1.09 18.50 8.52 6.47 1.05 18.75 8.55 6.51 1.02 19.00 8.59 6.54 0.98 19.25 8.62 6.58 0.94 19.50 8.66 6.61 0.90 19.75 8.69 6.64 0.86 20.00 8.72 6.67 0.82 Printed 3/11/2021 2021-03-11 Full Routing Prepared by Timmons Gro Type II 24-hr 100-YR Rainfall=9.16" Summary for Subcatchment 11S: Onsite Unrouted 4 Runoff = 5.50 cfs @ 11.97 hrs, Volume= 0.248 af, Depth> 4.72" Printed 3/11/2021 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 0.110 98 Paved parking, HSG B 0.380 61 >75% Grass cover, Good, HSG B 0.140 60 Woods, Fair, HSG B 0.630 67 Weighted Average 0.520 82.54% Pervious Area 0.110 17.46% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 11S: Onsite Unrouted 4 Hydrograph ■ Rurwff Time (hours) 2021-03-11 Full Routing Prepared by Timmons Gro Type II 24-hr 100-YR Rainfall=9.16" Hydrograph for Subcatchment 11S: Onsite Unrouted 4 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 5.00 0.58 0.00 0.00 5.25 0.61 0.00 0.00 5.50 0.65 0.00 0.00 5.75 0.69 0.00 0.00 6.00 0.73 0.00 0.00 6.25 0.77 0.00 0.00 6.50 0.82 0.00 0.00 6.75 0.86 0.00 0.00 7.00 0.91 0.00 0.00 7.25 0.95 0.00 0.00 7.50 1.00 0.00 0.00 7.75 1.05 0.00 0.00 8.00 1.10 0.00 0.00 8.25 1.15 0.01 0.01 8.50 1.21 0.01 0.01 8.75 1.28 0.02 0.02 9.00 1.35 0.02 0.02 9.25 1.42 0.04 0.03 9.50 1.49 0.05 0.03 9.75 1.57 0.06 0.04 10.00 1.66 0.08 0.05 10.25 1.76 0.10 0.06 10.50 1.87 0.13 0.08 10.75 2.00 0.17 0.10 11.00 2.15 0.22 0.13 11.25 2.34 0.29 0.19 11.50 2.59 0.40 0.27 11.75 3.54 0.88 1.46 12.00 6.07 2.59 5.24 12.25 6.47 2.89 0.76 12.50 6.73 3.10 0.49 12.75 6.92 3.24 0.36 13.00 7.07 3.36 0.31 13.25 7.20 3.47 0.26 13.50 7.32 3.56 0.23 13.75 7.42 3.65 0.21 14.00 7.51 3.72 0.18 14.25 7.59 3.79 0.17 14.50 7.67 3.85 0.16 14.75 7.75 3.91 0.15 15.00 7.82 3.97 0.15 15.25 7.88 4.03 0.14 15.50 7.95 4.08 0.13 15.75 8.01 4.13 0.12 16.00 8.06 4.17 0.11 16.25 8.11 4.22 0.11 16.50 8.16 4.26 0.11 16.75 8.21 4.30 0.10 17.00 8.26 4.34 0.10 17.25 8.31 4.38 0.10 17.50 8.35 4.41 0.10 17.75 8.39 4.45 0.09 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 18.00 8.44 4.49 0.09 18.25 8.48 4.52 0.09 18.50 8.52 4.55 0.08 18.75 8.55 4.58 0.08 19.00 8.59 4.62 0.08 19.25 8.62 4.64 0.07 19.50 8.66 4.67 0.07 19.75 8.69 4.70 0.07 20.00 8.72 4.73 0.07 Printed 3/11/2021 2021-03-11 Full Routing Prepared by Timmons Gro Type II 24-hr 100-YR Rainfall=9.16" Summary for Subcatchment 12S: Onsite Unrouted 5 Runoff = 9.17 cfs @ 11.96 hrs, Volume= 0.441 af, Depth> 6.53" Printed 3/11/2021 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 0.460 98 Paved parking, HSG B 0.310 61 >75% Grass cover, Good, HSG B 0.040 60 Woods, Fair, HSG B 0.810 82 Weighted Average 0.350 43.21 % Pervious Area 0.460 56.79% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 12S: Onsite Unrouted 5 Hydrograph ■ Rurwff Time (hours) 2021-03-11 Full Routing Prepared by Timmons Gro Type II 24-hr 100-YR Rainfall=9.16" Hydrograph for Subcatchment 12S: Onsite Unrouted 5 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 5.00 0.58 0.01 0.01 5.25 0.61 0.01 0.02 5.50 0.65 0.02 0.02 5.75 0.69 0.03 0.02 6.00 0.73 0.03 0.03 6.25 0.77 0.04 0.03 6.50 0.82 0.06 0.04 6.75 0.86 0.07 0.04 7.00 0.91 0.08 0.05 7.25 0.95 0.10 0.05 7.50 1.00 0.11 0.06 7.75 1.05 0.13 0.06 8.00 1.10 0.15 0.07 8.25 1.15 0.17 0.07 8.50 1.21 0.20 0.09 8.75 1.28 0.23 0.10 9.00 1.35 0.27 0.11 9.25 1.42 0.30 0.12 9.50 1.49 0.34 0.13 9.75 1.57 0.39 0.14 10.00 1.66 0.44 0.17 10.25 1.76 0.49 0.20 10.50 1.87 0.56 0.23 10.75 2.00 0.65 0.28 11.00 2.15 0.75 0.34 11.25 2.34 0.89 0.46 11.50 2.59 1.07 0.61 11.75 3.54 1.82 2.93 12.00 6.07 4.05 8.56 12.25 6.47 4.42 1.17 12.50 6.73 4.67 0.75 12.75 6.92 4.84 0.55 13.00 7.07 4.98 0.46 13.25 7.20 5.11 0.40 13.50 7.32 5.22 0.35 13.75 7.42 5.31 0.31 14.00 7.51 5.40 0.27 14.25 7.59 5.48 0.25 14.50 7.67 5.55 0.24 14.75 7.75 5.62 0.23 15.00 7.82 5.69 0.22 15.25 7.88 5.75 0.20 15.50 7.95 5.81 0.19 15.75 8.01 5.87 0.18 16.00 8.06 5.92 0.17 16.25 8.11 5.97 0.16 16.50 8.16 6.01 0.16 16.75 8.21 6.06 0.15 17.00 8.26 6.11 0.15 17.25 8.31 6.15 0.14 17.50 8.35 6.19 0.14 17.75 8.39 6.23 0.13 Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) 18.00 8.44 6.27 0.13 18.25 8.48 6.31 0.13 18.50 8.52 6.35 0.12 18.75 8.55 6.39 0.12 19.00 8.59 6.42 0.11 19.25 8.62 6.45 0.11 19.50 8.66 6.49 0.10 19.75 8.69 6.52 0.10 20.00 8.72 6.55 0.09 Printed 3/11/2021 2021-03-11 Full Routing Prepared by Timmons Gro Type II 24-hr 100-YR Rainfall=9.16" Summary for Pond 6P: BIORETENTION 1 [82] Warning: Early inflow requires earlier time span Printed 3/11/2021 Inflow Area = 5.850 ac, 53.85% Impervious, Inflow Depth > 6.34" for 100-YR event Inflow = 64.58 cfs @ 11.97 hrs, Volume= 3.089 of Outflow = 63.63 cfs @ 11.99 hrs, Volume= 2.775 af, Atten= 1 %, Lag= 1.2 min Primary = 63.63 cfs @ 11.99 hrs, Volume= 2.775 of Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Peak Elev= 416.09' @ 11.98 hrs Surf.Area= 6,732 sf Storage= 19,949 cf Plug -Flow detention time= 59.9 min calculated for 2.775 of (90% of inflow) Center -of -Mass det. time= 24.8 min ( 782.8 - 758.0 ) Volume Invert Avail.Storage Storage Description #1 407.00' 30,851 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 19,325 417.50 8,772 100.0 11,526 30,851 Device Routing Invert Outlet Devices #1 Primary 409.71' 36.0" Round HDPE_Round 36" L= 47.6' RCP, sq.cut end projecting, Ke= 0.500 Inlet / Outlet Invert= 409.71' / 409.00' S= 0.0149 '/' Cc= 0.900 n= 0.010 PVC, smooth interior, Flow Area= 7.07 sf #2 Device 1 415.00' 60.0" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #3 Primary 415.85' 15.0' long x 1.0' breadth Broad -Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 Coef. (English) 2.69 2.72 2.75 2.85 2.98 3.08 3.20 3.28 3.31 3.30 3.31 3.32 Primary OutFlow Max=61.42 cfs @ 11.99 hrs HW=416.07' (Free Discharge) 11=HDPE Round 36" (Passes 57.14 cfs of 75.06 cfs potential flow) t2=Orifice/Grate (Weir Controls 57.14 cfs @ 3.39 fps) 3=Broad-Crested Rectangular Weir (Weir Controls 4.27 cfs @ 1.27 fps) 2021-03-11 Full Routing Prepared by Timmons Gro W Type II 24-hr 100-YR Rainfall=9.16" Printed 3/11/2021 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 Discharge ids) ❑ Inflow ❑ Primary ❑ Primary 2021-03-11 Full Routing Prepared by Timmons Grc Type 11 24-hr 100-YR Rainfall=9.16" Pond 6P: BIORETENTION 1 Stage -Area -Storage Storage (cubic -feet) Printed 3/11/2021 ■ Surface ■ Storage 2021-03-11 Full Routing Prepared by Timmons Gro Type II 24-hr 100-YR Rainfall=9.16" Hydrograph for Pond 6P: BIORETENTION 1 Time Inflow Storage Elevation Primary (hours) (cfs) (cubic -feet) (feet) (cfs) 5.00 0.09 8 407.01 0.00 5.50 0.13 200 407.13 0.00 6.00 0.17 471 407.31 0.00 6.50 0.23 833 407.55 0.00 7.00 0.29 1,305 407.86 0.00 7.50 0.36 1,892 408.24 0.00 8.00 0.43 2,600 408.71 0.00 8.50 0.57 3,484 409.29 0.00 9.00 0.76 4,675 410.07 0.00 9.50 0.86 6,145 411.05 0.00 10.00 1.12 7,894 412.89 0.00 10.50 1.58 10,297 414.33 0.00 11.00 2.35 13,713 415.05 0.78 11.50 4.20 14,394 415.18 3.97 12.00 60.44 19,890 416.08 62.75 12.50 5.35 14,675 415.23 5.81 13.00 3.28 14,290 415.16 3.42 13.50 2.48 14,128 415.13 2.56 14.00 1.95 14,023 415.11 2.00 14.50 1.72 13,973 415.10 1.74 15.00 1.55 13,940 415.10 1.57 15.50 1.37 13,907 415.09 1.39 16.00 1.20 13,869 415.08 1.23 16.50 1.11 13,834 415.08 1.13 17.00 1.05 13,812 415.07 1.06 17.50 0.99 13,790 415.07 1.00 18.00 0.93 13,768 415.06 0.94 18.50 0.86 13,746 415.06 0.88 19.00 0.80 13,724 415.05 0.81 19.50 0.74 13,702 415.05 0.75 20.00 0.68 13,680 415.05 0.69 Printed 3/11/2021 2021-03-11 Full Routing Prepared by Timmons Gro Elevation Primary (feet) (cfs) 407.00 0.00 407.06 0.00 407.12 0.00 407.18 0.00 407.24 0.00 407.30 0.00 407.36 0.00 407.42 0.00 407.48 0.00 407.54 0.00 407.60 0.00 407.66 0.00 407.72 0.00 407.78 0.00 407.84 0.00 407.90 0.00 407.96 0.00 408.02 0.00 408.08 0.00 408.14 0.00 408.20 0.00 408.26 0.00 408.32 0.00 408.38 0.00 408.44 0.00 408.50 0.00 408.56 0.00 408.62 0.00 408.68 0.00 408.74 0.00 408.80 0.00 408.86 0.00 408.92 0.00 408.98 0.00 409.04 0.00 409.10 0.00 409.16 0.00 409.22 0.00 409.28 0.00 409.34 0.00 409.40 0.00 409.46 0.00 409.52 0.00 409.58 0.00 409.64 0.00 409.70 0.00 409.76 0.00 409.82 0.00 409.88 0.00 409.94 0.00 410.00 0.00 410.06 0.00 Type II 24-hr 100-YR Rainfall=9.16" Stage -Discharge for Pond 6P: BIORETENTION 1 Elevation Primary (feet) (cfs) 410.12 0.00 410.18 0.00 410.24 0.00 410.30 0.00 410.36 0.00 410.42 0.00 410.48 0.00 410.54 0.00 410.60 0.00 410.66 0.00 410.72 0.00 410.78 0.00 410.84 0.00 410.90 0.00 410.96 0.00 411.02 0.00 411.08 0.00 411.14 0.00 411.20 0.00 411.26 0.00 411.32 0.00 411.38 0.00 411.44 0.00 411.50 0.00 411.56 0.00 411.62 0.00 411.68 0.00 411.74 0.00 411.80 0.00 411.86 0.00 411.92 0.00 411.98 0.00 412.04 0.00 412.10 0.00 412.16 0.00 412.22 0.00 412.28 0.00 412.34 0.00 412.40 0.00 412.46 0.00 412.52 0.00 412.58 0.00 412.64 0.00 412.70 0.00 412.76 0.00 412.82 0.00 412.88 0.00 412.94 0.00 413.00 0.00 413.06 0.00 413.12 0.00 413.18 0.00 Elevation Primary (feet) (cfs) 413.24 0.00 413.30 0.00 413.36 0.00 413.42 0.00 413.48 0.00 413.54 0.00 413.60 0.00 413.66 0.00 413.72 0.00 413.78 0.00 413.84 0.00 413.90 0.00 413.96 0.00 414.02 0.00 414.08 0.00 414.14 0.00 414.20 0.00 414.26 0.00 414.32 0.00 414.38 0.00 414.44 0.00 414.50 0.00 414.56 0.00 414.62 0.00 414.68 0.00 414.74 0.00 414.80 0.00 414.86 0.00 414.92 0.00 414.98 0.00 415.04 0.41 415.10 1.62 415.16 3.29 415.22 5.30 415.28 7.61 415.34 10.18 415.40 12.99 415.46 16.03 415.52 19.26 415.58 22.69 415.64 26.30 415.70 30.08 415.76 34.03 415.82 38.14 415.88 42.61 415.94 47.90 416.00 53.71 416.06 59.94 416.12 66.57 416.18 73.54 416.24 80.86 416.30 88.48 Printed 3/11/2021 Elevation Primary (feet) (cfs) 416.36 92.19 416.42 95.41 416.48 98.87 416.54 102.61 416.60 106.54 416.66 110.69 416.72 115.14 416.78 119.80 416.84 124.69 416.90 129.68 416.96 134.85 417.02 140.22 417.08 145.85 417.14 151.76 417.20 157.88 417.26 164.18 417.32 170.43 417.38 176.86 417.44 183.47 417.50 189.88 2021-03-11 Full Routing Prepared by Timmons Gro Type II 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 0 407.15 3,808 228 407.30 3,808 457 407.45 3,808 685 407.60 3,808 914 407.75 3,808 1,142 407.90 3,808 1,371 408.05 3,808 1,599 408.20 3,808 1,828 408.35 3,808 2,056 408.50 3,808 2,285 408.65 3,808 2,513 408.80 3,808 2,742 408.95 3,808 2,970 409.10 3,808 3,199 409.25 3,808 3,427 409.40 3,808 3,656 409.55 3,808 3,884 409.70 3,808 4,113 409.85 3,808 4,341 410.00 3,808 4,570 410.15 3,808 4,798 410.30 3,808 5,027 410.45 3,808 5,255 410.60 3,808 5,484 410.75 3,808 5,712 410.90 3,808 5,940 411.05 3,808 6,140 411.20 3,808 6,283 411.35 3,808 6,426 411.50 3,808 6,569 411.65 3,808 6,712 411.80 3,808 6,854 411.95 3,808 6,997 412.10 3,808 7,140 412.25 3,808 7,283 412.40 3,808 7,426 412.55 3,808 7,568 412.70 3,808 7,711 412.85 3,808 7,854 413.00 3,808 7,997 413.15 3,808 8,140 413.30 3,808 8,282 413.45 3,808 8,425 413.60 3,808 8,568 413.75 3,808 8,711 413.90 3,808 8,854 414.05 3,876 9,141 414.20 4,081 9,738 414.35 4,286 10,365 414.50 4,491 11,024 414.65 4,696 11,713 Elevation Surface Storage (feet) (sq-ft) (cubic -feet) 414.80 4,901 12,432 414.95 5,106 13,183 415.10 5,316 13,964 415.25 5,530 14,778 415.40 5,743 15,623 415.55 5,956 16,501 415.70 6,169 17,410 415.85 6,383 18,351 416.00 6,596 19,325 416.15 6,814 20,331 416.30 7,031 21,369 416.45 7,249 22,440 416.60 7,466 23,544 416.75 7,684 24,680 416.90 7,902 25,849 417.05 8,119 27,050 417.20 8,337 28,284 417.35 8,554 29,551 417.50 8,772 30,851 Printed 3/11/2021 2021-03-11 Full Routing Prepared by Timmons Gro Type II 24-hr 100-YR Rainfall=9.16" Summary for Pond 8P: BIORETENTION 2 Printed 3/11/2021 Inflow Area = 1.920 ac, 54.17% Impervious, Inflow Depth > 6.41" for 100-YR event Inflow = 21.45 cfs @ 11.97 hrs, Volume= 1.026 of Outflow = 21.20 cfs @ 11.98 hrs, Volume= 0.898 af, Atten= 1 %, Lag= 1.1 min Primary = 21.20 cfs @ 11.98 hrs, Volume= 0.898 of Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Peak Elev= 432.69' @ 11.98 hrs Surf.Area= 2,254 sf Storage= 7,189 cf Plug -Flow detention time= 67.2 min calculated for 0.895 of (87% of inflow) Center -of -Mass det. time= 27.2 min ( 784.8 - 757.6 ) Volume Invert Avail.Storage Storage Description #1 423.91' 10,323 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Voids Inc.Store Cum.Store (feet) (sq-ft) M (cubic -feet) (cubic -feet) 423.91 1,587 0.0 0 0 427.91 1,587 40.0 2,539 2,539 430.91 1,587 25.0 1,190 3,729 431.00 1,627 100.0 145 3,874 432.00 2,041 100.0 1,834 5,708 433.00 2,350 100.0 2,196 7,904 434.00 2,489 100.0 2,420 10,323 Device Routino Invert Outlet Devices #1 Primary 424.43' 18.0" Round HDPE_Round 18" L= 61.4' RCP, sq.cut end projecting, Ke= 0.500 Inlet / Outlet Invert= 424.43' / 423.82' S= 0.0099 '/' Cc= 0.900 n= 0.010 PVC, smooth interior, Flow Area= 1.77 sf #2 Device 1 431.91' 36.0" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads Primary OutFlow Max=20.44 cfs @ 11.98 hrs HW=432.67' (Free Discharge) L1=HDPE_Round 18" (Passes 20.44 cfs of 23.29 cfs potential flow) t2=Orifice/Grate (Weir Controls 20.44 cfs @ 2.85 fps) 2021-03-11 Full Routing Prepared by Timmons Grc i c m m W Type 1124-hr 100-YR Rainfa&9.16" Printed 3/11/2021 Pond 8P: BIORETENTION 2 Hydrograph Time (hours) Pond 813: BIORETENTION 2 Stage -Discharge 434 433 _.. ,. Orifice/Grate - 432 431 430- 429- .. ...... 428 ,_ ........_.. 427 426 425 HD 424 0 2 4 6 6 10 12 14 16 16 20 22 24 Discharge (de) ■ Inflow ■ Primary ❑ Primary 2021-03-11 Full Routing Prepared by Timmons Grc Type 1124-hr 100-YR Rainfa&9.16" Pond 8P: BIORETENTION 2 Stage -Area -Storage Storage (cubic -feet) Printed 3/11/2021 ■ Surface ■ Storage 2021-03-11 Full Routing Prepared by Timmons Gro Type II 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 0.02 2 423.91 0.00 5.50 0.04 56 424.00 0.00 6.00 0.06 142 424.13 0.00 6.50 0.08 264 424.33 0.00 7.00 0.10 423 424.58 0.00 7.50 0.12 620 424.89 0.00 8.00 0.14 858 425.26 0.00 8.50 0.19 1,155 425.73 0.00 9.00 0.25 1,555 426.36 0.00 9.50 0.29 2,048 427.14 0.00 10.00 0.38 2,635 428.15 0.00 10.50 0.53 3,441 430.18 0.00 11.00 0.79 4,609 431.43 0.00 11.50 1.40 5,772 432.03 1.35 12.00 20.06 7,167 432.68 20.82 12.50 1.77 5,839 432.06 1.90 13.00 1.09 5,743 432.02 1.11 13.50 0.82 5,709 432.00 0.84 14.00 0.65 5,681 431.99 0.66 14.50 0.57 5,667 431.98 0.58 15.00 0.51 5,653 431.97 0.52 15.50 0.45 5,639 431.97 0.46 16.00 0.40 5,625 431.96 0.40 16.50 0.37 5,617 431.95 0.37 17.00 0.35 5,612 431.95 0.35 17.50 0.33 5,607 431.95 0.33 18.00 0.31 5,602 431.95 0.31 18.50 0.29 5,597 431.94 0.29 19.00 0.26 5,591 431.94 0.27 19.50 0.24 5,586 431.94 0.25 20.00 0.22 5,581 431.94 0.23 Printed 3/11/2021 2021-03-11 Full Routing Prepared by Timmons Gro Elevation Primary (feet) (cfs) 423.91 0.00 423.97 0.00 424.03 0.00 424.09 0.00 424.15 0.00 424.21 0.00 424.27 0.00 424.33 0.00 424.39 0.00 424.45 0.00 424.51 0.00 424.57 0.00 424.63 0.00 424.69 0.00 424.75 0.00 424.81 0.00 424.87 0.00 424.93 0.00 424.99 0.00 425.05 0.00 425.11 0.00 425.17 0.00 425.23 0.00 425.29 0.00 425.35 0.00 425.41 0.00 425.47 0.00 425.53 0.00 425.59 0.00 425.65 0.00 425.71 0.00 425.77 0.00 425.83 0.00 425.89 0.00 425.95 0.00 426.01 0.00 426.07 0.00 426.13 0.00 426.19 0.00 426.25 0.00 426.31 0.00 426.37 0.00 426.43 0.00 426.49 0.00 426.55 0.00 426.61 0.00 426.67 0.00 426.73 0.00 426.79 0.00 426.85 0.00 426.91 0.00 426.97 0.00 Type 1124-hr 100-YR Rainfa&9.16" Stage -Discharge for Pond 8P: BIORETENTION 2 Elevation Primary (feet) (cfs) 427.03 0.00 427.09 0.00 427.15 0.00 427.21 0.00 427.27 0.00 427.33 0.00 427.39 0.00 427.45 0.00 427.51 0.00 427.57 0.00 427.63 0.00 427.69 0.00 427.75 0.00 427.81 0.00 427.87 0.00 427.93 0.00 427.99 0.00 428.05 0.00 428.11 0.00 428.17 0.00 428.23 0.00 428.29 0.00 428.35 0.00 428.41 0.00 428.47 0.00 428.53 0.00 428.59 0.00 428.65 0.00 428.71 0.00 428.77 0.00 428.83 0.00 428.89 0.00 428.95 0.00 429.01 0.00 429.07 0.00 429.13 0.00 429.19 0.00 429.25 0.00 429.31 0.00 429.37 0.00 429.43 0.00 429.49 0.00 429.55 0.00 429.61 0.00 429.67 0.00 429.73 0.00 429.79 0.00 429.85 0.00 429.91 0.00 429.97 0.00 430.03 0.00 430.09 0.00 Elevation Primary (feet) (cfs) 430.15 0.00 430.21 0.00 430.27 0.00 430.33 0.00 430.39 0.00 430.45 0.00 430.51 0.00 430.57 0.00 430.63 0.00 430.69 0.00 430.75 0.00 430.81 0.00 430.87 0.00 430.93 0.00 430.99 0.00 431.05 0.00 431.11 0.00 431.17 0.00 431.23 0.00 431.29 0.00 431.35 0.00 431.41 0.00 431.47 0.00 431.53 0.00 431.59 0.00 431.65 0.00 431.71 0.00 431.77 0.00 431.83 0.00 431.89 0.00 431.95 0.25 432.01 0.97 432.07 1.97 432.13 3.18 432.19 4.57 432.25 6.11 432.31 7.80 432.37 9.62 432.43 11.56 432.49 13.61 432.55 15.78 432.61 18.05 432.67 20.42 432.73 22.88 432.79 23.47 432.85 23.56 432.91 23.66 432.97 23.75 433.03 23.84 433.09 23.93 433.15 24.02 433.21 24.11 Printed 3/11/2021 Elevation Primary (feet) (cfs) 433.27 24.20 433.33 24.29 433.39 24.38 433.45 24.47 433.51 24.56 433.57 24.65 433.63 24.73 433.69 24.82 433.75 24.91 433.81 25.00 433.87 25.08 433.93 25.17 433.99 25.26 2021-03-11 Full Routing Prepared by Timmons Gro Type II 24-hr 100-YR Rainfall=9.16" Stage -Area -Storage for Pond 8P: BIORETENTION 2 Elevation Surface Storage (feet) (sq-ft) (cubic -feet) 423.91 1,587 0 424.06 1,587 95 424.21 1,587 190 424.36 1,587 286 424.51 1,587 381 424.66 1,587 476 424.81 1,587 571 424.96 1,587 667 425.11 1,587 762 425.26 1,587 857 425.41 1,587 952 425.56 1,587 1,047 425.71 1,587 1,143 425.86 1,587 1,238 426.01 1,587 1,333 426.16 1,587 1,428 426.31 1,587 1,524 426.46 1,587 1,619 426.61 1,587 1,714 426.76 1,587 1,809 426.91 1,587 1,904 427.06 1,587 2,000 427.21 1,587 2,095 427.36 1,587 2,190 427.51 1,587 2,285 427.66 1,587 2,381 427.81 1,587 2,476 427.96 1,587 2,559 428.11 1,587 2,619 428.26 1,587 2,678 428.41 1,587 2,738 428.56 1,587 2,797 428.71 1,587 2,857 428.86 1,587 2,916 429.01 1,587 2,976 429.16 1,587 3,035 429.31 1,587 3,095 429.46 1,587 3,154 429.61 1,587 3,214 429.76 1,587 3,273 429.91 1,587 3,333 430.06 1,587 3,392 430.21 1,587 3,452 430.36 1,587 3,511 430.51 1,587 3,571 430.66 1,587 3,630 430.81 1,587 3,690 430.96 1,609 3,809 431.11 1,673 4,056 431.26 1,735 4,311 431.41 1,797 4,576 431.56 1,859 4,850 Elevation Surface Storage (feet) (sq-ft) (cubic -feet) 431.71 1,921 5,134 431.86 1,983 5,426 432.01 2,044 5,729 432.16 2,090 6,039 432.31 2,137 6,356 432.46 2,183 6,680 432.61 2,229 7,011 432.76 2,276 7,348 432.91 2,322 7,693 433.06 2,358 8,045 433.21 2,379 8,400 433.36 2,400 8,759 433.51 2,421 9,120 433.66 2,442 9,485 433.81 2,463 9,853 433.96 2,483 10,224 Printed 3/11/2021 2021-03-11 Full Routing Prepared by Timmons Gro Type II 24-hr 100-YR Rainfall=9.16" Summary for Pond 10P: DRY POND [82] Warning: Early inflow requires earlier time span [88] Warning: Qout>Qin may require smaller dt or Finer Routing Printed 3/11/2021 Inflow Area = 7.010 ac, 60.49% Impervious, Inflow Depth > 6.65" for 100-YR event Inflow = 80.29 cfs @ 11.96 hrs, Volume= 3.884 of Outflow = 81.26 cfs @ 11.97 hrs, Volume= 3.556 af, Atten= 0%, Lag= 0.5 min Primary = 81.26 cfs @ 11.97 hrs, Volume= 3.556 of Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Peak Elev= 425.50' @ 11.97 hrs Surf.Area= 4,897 sf Storage= 24,524 cf Plug -Flow detention time= 53.3 min calculated for 3.556 of (92% of inflow) Center -of -Mass det. time= 22.8 min ( 776.8 - 754.0 ) Volume Invert Avail.Storage Storage Description #1 418.00' 29,593 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic -feet) (cubic -feet) 418.00 1,493 0 0 419.00 1,914 1,704 1,704 420.00 2,380 2,147 3,851 421.00 2,888 2,634 6,485 422.00 3,430 3,159 9,644 423.00 3,995 3,713 13,356 424.00 4,379 4,187 17,543 425.00 4,734 4,557 22,100 426.00 5,058 4,896 26,996 426.50 5,330 2,597 29,593 Device Routino Invert Outlet Devices #1 Primary 417.90' 24.0" Round Culvert L= 117.9' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 417.90' / 417.01' S= 0.0075 '/' Cc= 0.900 n= 0.010 PVC, smooth interior, Flow Area= 3.14 sf #2 Device 1 418.00' 4.0" W x 4.2" H Vert. Orifice/Grate C= 0.600 #3 Device 1 423.92' 60.0" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #4 Primary 424.99' 45.0' long x 5.0' breadth Broad -Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 Primary OutFlow Max=77.51 cfs @ 11.97 hrs HW=425.47' (Free Discharge) 1_Cu lvert (Inlet Controls 38.78 cfs @ 12.34 fps) �2=Orifice/Grate (Passes < 1.52 cfs potential flow) 3=Orifice/Grate (Passes < 99.21 cfs potential flow) =Broad -Crested Rectangular Weir (Weir Controls 38.73 cfs @ 1.79 fps) 2021-03-11 Full Routing Prepared by Timmons Grc 42 42 42 42 c 0 m 42 W 42 42 41 41 0 Type 1124-hr 100-YR Rainfa&9.16" Printed 3/11/2021 LLC Paae107 Pond 10P: DRY POND Hydrograph Time (hours) Pond 10P: DRY POND Stage -Discharge 8 LU 4U UU aU lUU l[U 14U 1w laU LUU LLU 24U L(jU Discharge ids) ■ Irrflow ■ Primary 0 Primary 2021-03-11 Full Routing Prepared by Timmons Grc 42 42 42 42 c 0 m 4 W 42 42 41 41 Type 1124-hr 100-YR Rainfa&9.16" Printed 3/11/2021 LLC Page108 Pond 10P: DRY POND Stage -Area -Storage Surface/Horizontal/Wetted Area (sq-ft) n 5nn 1 nnn 1 5nn 2 nnn 2 enn n nnn ISM 4 nnn 4 5nn 5 nnn 22 6 OOK 5 4 3 1 0 y jCustom Stage Data S 0 5,000 10,000 15,000 20.000 25,000 Storage (cubic -feet) ■ Surtace ■ Storage 2021-03-11 Full Routing Prepared by Timmons Gro Type II 24-hr 100-YR Rainfall=9.16" Hydrograph for Pond 10P: DRY POND Time Inflow Storage Elevation Primary (hours) (cfs) (cubic -feet) (feet) (cfs) 5.00 0.14 12 418.01 0.00 5.50 0.21 261 418.17 0.08 6.00 0.28 471 418.30 0.18 6.50 0.36 646 418.41 0.26 7.00 0.44 835 418.52 0.33 7.50 0.53 1,064 418.65 0.39 8.00 0.61 1,339 418.81 0.44 8.50 0.80 1,734 419.02 0.51 9.00 1.05 2,388 419.34 0.61 9.50 1.17 3,228 419.73 0.70 10.00 1.51 4,257 420.17 0.79 10.50 2.10 5,943 420.81 0.91 11.00 3.09 8,777 421.74 1.06 11.50 5.43 14,146 423.20 1.26 12.00 74.91 24,331 425.46 76.68 12.50 6.57 18,194 424.15 7.02 13.00 4.02 17,810 424.06 4.15 13.50 3.04 17,654 424.03 3.13 14.00 2.39 17,529 424.00 2.46 14.50 2.10 17,449 423.98 2.13 15.00 1.89 17,398 423.97 1.92 15.50 1.68 17,346 423.95 1.71 16.00 1.46 17,276 423.94 1.52 16.50 1.36 17,212 423.92 1.38 17.00 1.28 17,154 423.91 1.35 17.50 1.21 16,980 423.87 1.34 18.00 1.13 16,680 423.80 1.33 18.50 1.05 16,259 423.70 1.32 19.00 0.98 15,724 423.58 1.31 19.50 0.90 15,081 423.42 1.29 20.00 0.82 14,335 423.24 1.26 Printed 3/11/2021 2021-03-11 Full Routing Prepared by Timmons Gro Elevation Primary (feet) (cfs) 418.00 0.00 418.10 0.03 418.20 0.10 418.30 0.18 418.40 0.26 418.50 0.32 418.60 0.36 418.70 0.41 418.80 0.44 418.90 0.48 419.00 0.51 419.10 0.54 419.20 0.57 419.30 0.60 419.40 0.62 419.50 0.65 419.60 0.67 419.70 0.69 419.80 0.72 419.90 0.74 420.00 0.76 420.10 0.78 420.20 0.80 420.30 0.82 420.40 0.84 420.50 0.86 420.60 0.87 420.70 0.89 420.80 0.91 420.90 0.93 421.00 0.94 421.10 0.96 421.20 0.98 421.30 0.99 421.40 1.01 421.50 1.02 421.60 1.04 421.70 1.05 421.80 1.07 421.90 1.08 422.00 1.10 422.10 1.11 422.20 1.13 422.30 1.14 422.40 1.15 422.50 1.17 422.60 1.18 422.70 1.19 422.80 1.21 422.90 1.22 423.00 1.23 423.10 1.25 Type II 24-hr 100-YR Rainfall=9.16" Stage -Discharge for Pond 10P: DRY POND Elevation Primary (feet) (cfs) 423.20 1.26 423.30 1.27 423.40 1.28 423.50 1.30 423.60 1.31 423.70 1.32 423.80 1.33 423.90 1.34 424.00 2.52 424.10 5.29 424.20 8.99 424.30 13.42 424.40 18.48 424.50 24.10 424.60 30.23 424.70 36.43 424.80 36.74 424.90 37.05 425.00 37.47 425.10 41.51 425.20 48.14 425.30 57.13 425.40 68.22 425.50 81.64 425.60 97.02 425.70 111.84 425.80 127.65 425.90 144.71 426.00 162.67 426.10 181.05 426.20 200.16 426.30 220.25 426.40 241.08 426.50 262.97 Printed 3/11/2021 2021-03-11 Full Routing Prepared by Timmons Grc Type 11 24-hr 100-YR Rainfall=9.16" Stage -Area -Storage for Pond 10P: DRY POND Elevation Surface Storage (feet) (sq-ft) (cubic -feet) 418.00 1,493 0 418.10 1,535 151 418.20 1,577 307 418.30 1,619 467 418.40 1,661 631 418.50 1,704 799 418.60 1,746 972 418.70 1,788 1,148 418.80 1,830 1,329 418.90 1,872 1,514 419.00 1,914 1,704 419.10 1,961 1,897 419.20 2,007 2,096 419.30 2,054 2,299 419.40 2,100 2,506 419.50 2,147 2,719 419.60 2,194 2,936 419.70 2,240 3,157 419.80 2,287 3,384 419.90 2,333 3,615 420.00 2,380 3,851 420.10 2,431 4,091 420.20 2,482 4,337 420.30 2,532 4,587 420.40 2,583 4,843 420.50 2,634 5,104 420.60 2,685 5,370 420.70 2,736 5,641 420.80 2,786 5,917 420.90 2,837 6,198 421.00 2,888 6,485 421.10 2,942 6,776 421.20 2,996 7,073 421.30 3,051 7,375 421.40 3,105 7,683 421.50 3,159 7,996 421.60 3,213 8,315 421.70 3,267 8,639 421.80 3,322 8,968 421.90 3,376 9,303 422.00 3,430 9,644 422.10 3,487 9,989 422.20 3,543 10,341 422.30 3,600 10,698 422.40 3,656 11,061 422.50 3,713 11,429 422.60 3,769 11,803 422.70 3,825 12,183 422.80 3,882 12,568 422.90 3,938 12,959 423.00 3,995 13,356 423.10 4,033 13,757 Elevation Surface Storage (feet) (sq-ft) (cubic -feet) 423.20 4,072 14,163 423.30 4,110 14,572 423.40 4,149 14,985 423.50 4,187 15,402 423.60 4,225 15,822 423.70 4,264 16,247 423.80 4,302 16,675 423.90 4,341 17,107 424.00 4,379 17,543 424.10 4,415 17,983 424.20 4,450 18,426 424.30 4,486 18,873 424.40 4,521 19,323 424.50 4,557 19,777 424.60 4,592 20,234 424.70 4,627 20,695 424.80 4,663 21,160 424.90 4,698 21,628 425.00 4,734 22,100 425.10 4,766 22,575 425.20 4,799 23,053 425.30 4,831 23,534 425.40 4,864 24,019 425.50 4,896 24,507 425.60 4,928 24,998 425.70 4,961 25,493 425.80 4,993 25,990 425.90 5,026 26,491 426.00 5,058 26,996 426.10 5,112 27,504 426.20 5,167 28,018 426.30 5,221 28,537 426.40 5,276 29,062 426.50 6,330 29,593 Printed 3/11/2021 2021-03-11 Full Routing Prepared by Timmons Gro Type II 24-hr 100-YR Rainfall=9.16" Printed 3/11/2021 Summary for Link 3L: PRE Combined Inflow Area = 16.080 ac, 4.48% Impervious, Inflow Depth > 4.13" for 100-YR event Inflow = 124.19 cfs @ 11.97 hrs, Volume= 5.539 of Primary = 124.19 cfs @ 11.97 hrs, Volume= 5.539 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Link 3L: PRE Combined Hydrograph ■ InMov ■ Primary Time (hours) 2021-03-11 Full Routing Prepared by Timmons Gro Type II 24-hr 100-YR Rainfall=9.16" Hydrograph for Link 3L: PRE Combined Time Inflow Elevation Primary (hours) (cfs) (feet) (cfs) 5.00 0.00 0.00 0.00 5.25 0.00 0.00 0.00 5.50 0.00 0.00 0.00 5.75 0.00 0.00 0.00 6.00 0.00 0.00 0.00 6.25 0.00 0.00 0.00 6.50 0.01 0.00 0.01 6.75 0.01 0.00 0.01 7.00 0.02 0.00 0.02 7.25 0.03 0.00 0.03 7.50 0.03 0.00 0.03 7.75 0.04 0.00 0.04 8.00 0.05 0.00 0.05 8.25 0.06 0.00 0.06 8.50 0.08 0.00 0.08 8.75 0.09 0.00 0.09 9.00 0.16 0.00 0.16 9.25 0.27 0.00 0.27 9.50 0.38 0.00 0.38 9.75 0.52 0.00 0.52 10.00 0.71 0.00 0.71 10.25 0.96 0.00 0.96 10.50 1.30 0.00 1.30 10.75 1.77 0.00 1.77 11.00 2.41 0.00 2.41 11.25 3.54 0.00 3.54 11.50 5.24 0.00 5.24 11.75 30.40 0.00 30.40 12.00 119.33 0.00 119.33 12.25 17.58 0.00 17.58 12.50 11.54 0.00 11.54 12.75 8.53 0.00 8.53 13.00 7.19 0.00 7.19 13.25 6.23 0.00 6.23 13.50 5.50 0.00 5.50 13.75 4.89 0.00 4.89 14.00 4.36 0.00 4.36 14.25 4.04 0.00 4.04 14.50 3.86 0.00 3.86 14.75 3.68 0.00 3.68 15.00 3.49 0.00 3.49 15.25 3.30 0.00 3.30 15.50 3.11 0.00 3.11 15.75 2.92 0.00 2.92 16.00 2.72 0.00 2.72 16.25 2.61 0.00 2.61 16.50 2.54 0.00 2.54 16.75 2.48 0.00 2.48 17.00 2.41 0.00 2.41 17.25 2.34 0.00 2.34 17.50 2.27 0.00 2.27 17.75 2.20 0.00 2.20 Time Inflow Elevation Primary (hours) (cfs) (feet) (cfs) 18.00 2.13 0.00 2.13 18.25 2.06 0.00 2.06 18.50 1.99 0.00 1.99 18.75 1.92 0.00 1.92 19.00 1.85 0.00 1.85 19.25 1.78 0.00 1.78 19.50 1.71 0.00 1.71 19.75 1.64 0.00 1.64 20.00 1.57 0.00 1.57 Printed 3/11/2021 2021-03-11 Full Routing Prepared by Timmons Gro Type II 24-hr 100-YR Rainfall=9.16" Printed 3/11/2021 Summary for Link 13L: POST Combined Inflow Area = 16.220 ac, 55.49% Impervious, Inflow Depth > 5.86" for 100-YR event Inflow = 179.09 cfs @ 11.98 hrs, Volume= 7.918 of Primary = 179.09 cfs @ 11.98 hrs, Volume= 7.918 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Link 13L: POST Combined Hydrograph ■ Inflow ■ Primary Time (hours) 2021-03-11 Full Routing Prepared by Timmons Gro Type II 24-hr 100-YR Rainfall=9.16" Hydrograph for Link 13L: POST Combined Time Inflow Elevation Primary (hours) (cfs) (feet) (cfs) 5.00 0.01 0.00 0.01 5.25 0.05 0.00 0.05 5.50 0.10 0.00 0.10 5.75 0.15 0.00 0.15 6.00 0.21 0.00 0.21 6.25 0.26 0.00 0.26 6.50 0.30 0.00 0.30 6.75 0.34 0.00 0.34 7.00 0.37 0.00 0.37 7.25 0.41 0.00 0.41 7.50 0.44 0.00 0.44 7.75 0.48 0.00 0.48 8.00 0.51 0.00 0.51 8.25 0.56 0.00 0.56 8.50 0.61 0.00 0.61 8.75 0.67 0.00 0.67 9.00 0.74 0.00 0.74 9.25 0.81 0.00 0.81 9.50 0.86 0.00 0.86 9.75 0.93 0.00 0.93 10.00 1.01 0.00 1.01 10.25 1.11 0.00 1.11 10.50 1.22 0.00 1.22 10.75 1.37 0.00 1.37 11.00 2.32 0.00 2.32 11.25 4.72 0.00 4.72 11.50 7.46 0.00 7.46 11.75 50.34 0.00 50.34 12.00 174.06 0.00 174.06 12.25 25.16 0.00 25.16 12.50 15.97 0.00 15.97 12.75 11.26 0.00 11.26 13.00 9.45 0.00 9.45 13.25 8.06 0.00 8.06 13.50 7.10 0.00 7.10 13.75 6.27 0.00 6.27 14.00 5.58 0.00 5.58 14.25 5.10 0.00 5.10 14.50 4.85 0.00 4.85 14.75 4.61 0.00 4.61 15.00 4.37 0.00 4.37 15.25 4.13 0.00 4.13 15.50 3.88 0.00 3.88 15.75 3.65 0.00 3.65 16.00 3.43 0.00 3.43 16.25 3.25 0.00 3.25 16.50 3.14 0.00 3.14 16.75 3.06 0.00 3.06 17.00 3.01 0.00 3.01 17.25 2.96 0.00 2.96 17.50 2.91 0.00 2.91 17.75 2.85 0.00 2.85 Time Inflow Elevation Primary (hours) (cfs) (feet) (cfs) 18.00 2.80 0.00 2.80 18.25 2.75 0.00 2.75 18.50 2.69 0.00 2.69 18.75 2.63 0.00 2.63 19.00 2.58 0.00 2.58 19.25 2.52 0.00 2.52 19.50 2.46 0.00 2.46 19.75 2.40 0.00 2.40 20.00 2.34 0.00 2.34 Printed 3/11/2021