2024 03 Drainage Statement

40°0 00°0 10°0 oss 20°0 00°0 z0'0 00'S soo 000 = S00 ose zro ooo = zh cove ZO 00°0 zo os'ez €b0 00°0 €b0 00'ez vhO 00°0 vb Oo os'2z sO 000 stO 002 910 000 910 Ose zr0 ooo = zh o ool 610 00°0 610 os'0z Zo 00°0 zo 00°02 £70 00°0 £20 os'6 920 000 920 006! 80 ooo = azo os'al leo ooo = Leo oot vE0 00°0 vE0 Ost L€0 00°0 e0 OO'zL 6E0 00°0 6E0 os'ol zv0 000 zo 0091 (mou) ow, zo ooo dro oss eeeexenenZeaiunanaauases sore #0 000 es 00st 90 00°0 90 os'rl $80 00°0 $80 00'rL 80h 00°0 80h os'el ist ooo 8 ooet ore ooo 8 ae oszi we ooo) EL oozt of 0 00°0 of Osh 10 00°0 LV0 OLE 2 LO 00°0 LLO oso & 900 000 900 0001 3 £00 ro) ose * zoo ooo = 200 006 200 00°0 z0'0 ose 10°0 00°0 10°0 00's 100 000 100 ose 100 000 100 002 too ooo = 100 os 100 00°0 100 00°9 40°0 00°0 100 oss 40°0 00°0 40°0 00's 000 000 000 os duibopin 000 oo = 000 coos | 000 000 = 000 oor 000 oo = 000 osez | 000 000 = 000 ose 130) pup "x3 :70z2 yUuIT 000 ooo 00°0 00°62 000 00°0 000 00e 00°0 00'0 00°0 Os'8z 00°0 00°0 000 os =\p “0C-1 xt 4 = 000 00'0 00°0 00'8z 00°0 00°0 000 00% 814, €0'0 =IP ‘S14 OO'0E-00'0 =ueds eulLL ‘mou = Mol ALeWie 00:0 00'°0 000 og lz 000 000 000 osh fie Buysys : 124 HUF OL peynoy ooo = boosie «| ooo = oes uw 9°09 =6e7 ‘%0 =UeHY ‘Je s9¥'0 OWNIOA ‘SIU LPZL @ spo sz'e Avewid 000 00 000 oosz_ | ooo 000 000 000 J2 9970 =OWNIOA ‘SY ZPZL Ospsze = MOU sj) Tee) 1s) Tsunoy) (spy co) Tsp) {sunou) quae sea,r-0) JO} .0ZZ =YIdeq Moyul ‘snoWedw|%00'0 ‘92 EES Z = Badly MOYUT Kew UOHeAg|y —-MOyu) owl Aewd uopeng|3 Moyul OWL, Teo, pun “x3 "oz yur Joy Aewung Tyo jeuueyD ‘dosd :721 4UrT 40} ydesBoupAH seabed DTT SUNOS SEMYOS GVOOIPAH E20e © OPED US GF-Oz 0 GAVOOIRAA ae ebeg DTT SUNOS SEMYOS GVOOIPAH E20e © OPS US GF-Oz 0 GAVOOIBAA BulseeulBu o1WeUA Aq peledalg AV904PAH 10-£0-¥20z Z0Z/LZ/E POW a2 S=IRIUIEY JEOA-OL sY-PZ IN] GAL veOz/LZ/E PEW 27 G=NELUIEY JEOA-OL IY-H2 IN] OOAL BulleeulBu o1WeUAG Aq peledalg GVD0PAH 10-£0-¥20z

(snow) owns or oz ez iz ov oz 92 eZ Uz Zor GL al LI OF SLM EL Zh (sp) mos “De O16 O=Beuy Mayu deiBoaphn e301 3S1G “XZ SEZ MUI SJY 0‘0 =IP SY 0'0E-00'0 =Ueds eI ‘mou! = MoyINE ABW (e101 Bunsixg : 121 HUT 01 painoy uu 9'9 =6e7 "%0 =UeRY Ye L910 ONION ‘SUEY © 81 pL‘ ‘Mew se 940 OUNjoA 'SYEYZL OS pL = mowul quane JeeA-O1 JO} .0ZZ = tadeq Moyul ‘snoIAedw| %00'0 ‘22 OL60 = Bally MOWU 1¥0.L SIG “XS 21LZ YUL soy [sewing 00'0 o0'o 000 os'sz 00'0 00'0 00'0 oo'sz yoo 00'0 yoo os've 600 000 600 o0've ovo 00-0 ovo os'ez O10 o0'0 O10 oo'ez 10 o0'0 LO oszz Lo 00'0 LVo oo zo 00°0 zo os'tz zo 000 aa 001 £10 00-0 £10 os-0z v0 o0'0 vo o0'0z vo o0'0 vo os‘él si0 00'0 S10 o0'6) 910 000 910 os‘ 810 000 alo o0'8 ozo 000 ozo os'zb ez'0 o0'o ez'0 o0'Z1 sz'0 o0'0 sz'0 os'9L 00 00'0 eo 00°91 seo 000 seo os'si oro 000 oro 00's} 9r0 000 9r0 os‘ 9s'0 o0'o 9s'0 o'r $10 o0'o $10 os‘el ev o0'0 er oo'el eve 000 eve oszi 060 000 060 o0ZL 1z0 000 1zo ost ovo o0'0 ovo 00'LL v0'0 00'0 v0 os‘ol Loo 000 Lovo 00°01 000 000 000 os'6 000 0-0 000 006 000 000 000 ose 00'0 o0'0 000 00's 090°0 00'0 00°0 oss 000 00°0 000 002 000 000 000 oso 000 00-0 000 009 00'0 o0'0 o0'0 os's 000 o0'0 000 00's 00'0 00°0 00°0 os'y 000 00'0 000 oooe | o00 000 000 00'r 000 000 000 osez | o00 000 000 ose 000 oo 000 ooez | coo 00-0 000 oo o0'0 o0'0 o0'0 os'ez | oo'0 o0'0 o0'0 os, o0'0 o0'0 o0'0 oo'sz | ooo o0'0 000 00% 000 00'0 000 oszz | 000 00'0 00°0 os" 000 000 000 oozz | ooo 000 000 00 000 000 000 osez | coo 000 000 oso 000 00-0 000 oosz | ooo 000 000 000 sp) Tee) (si) (sinoy) | (s/o) 088) (sp) (sinouy Aieulud — UoneAe!g Moy) owl, =| Aewug —uopenaig moyuy owl 130, PUN “XZ :10z 4UIT 405 YdesBoupAH 16 ebeg DTT SUOAN|OS B1eMYOS GVIOIPAH EzOz © OFGBO US 4b-0z OL @AVIOIPAH PZ0Z/LZIE PEW BulseeulBu o1WeUA Aq peledalg 22 GHEE JEOA-OL 4Y-H2 IN] OOAL VI04PAH 10-£0-7Z02 de ebeg vZ0Z/LZ/E POW 27 G=NELUIEY JEOA-OL IY-H2 IN] OOAL DTT SUOAN|OS B1eMYOS GYVIOIPAH €Ez0z © OFGBOUIS 4b-0z OL @AVIOIPAH BulleeulBu o1WeUAG Aq peledalg AVOPAH 10-€0-7Z02

00'0 o0'o 000 os'sz 00'0 00'0 00'0 oo'sz boo 00'0 Lovo os've £00 000 200 o0've £00 00-0 £00 os'ez 00 o0'0 v0 oo'ez yoo o0'0 yoo oszz yoo 00'0 yoo oo yoo 00°0 v0 os'tz 00 000 00 001 soo 00-0 S00 os-0z s0'0 o0'0 00 o0'0z soo o0'0 $00 os‘él so'0 00'0 $00 o0'6) 900 000 90°0 os‘ 900 000 900 o0'8 20:0 000 29:0 os'zb 20°0 o0'o 20°0 o0'Z1 600 o0'0 600 os'9L bo 00'0 LO 00°91 zo 000 zL0 os'si vo 000 vo 00's} 91-0 000 910 os‘ ozo o0'o oz'0 o'r 9z'0 o0'o 9z'0 os‘el 050 o0'0 os'0 oo'el wh 000 wh oszi 960 000 ae°0 o0ZL 20:0 000 20:0 ost yoo o0'0 yoo 00'LL 200 00'0 z0'0 os‘ol 000 000 00°0 00°01 000 000 000 os'6 000 0-0 000 006 000 000 000 ose 00'0 o0'0 000 00's 090°0 00'0 00°0 oss 000 00°0 000 002 000 000 000 oso 000 00-0 000 009 00'0 o0'0 o0'0 os's 000 o0'0 000 00's 00'0 00°0 00°0 os'y 000 00'0 000 oooe | o00 000 000 00'r 000 000 000 osez | o00 000 000 ose 000 oo 000 ooez | coo 00-0 000 oo o0'0 o0'0 o0'0 os'ez | oo'0 o0'0 o0'0 os, o0'0 o0'0 o0'0 oo'sz | ooo o0'0 000 00% 000 00'0 000 oszz | 000 00'0 00°0 os" 000 000 000 oozz | ooo 000 000 00 000 000 000 osez | coo 000 000 oso 000 00-0 000 oosz | ooo 000 000 000 sp) Tee) (si) (sinoy) | (s/o) 088) (sp) (sinouy Aieulud — UoneAe!g Moy) owl, =| Aewug —uopenaig moyuy owl 1yOL SIG “X3 21LZ yur 405 ydesBouphy ze ebeg vZ0Z/LZ/E POW 27 G=NELUIEY JEOA-OL IY-H2 IN] OOAL DTT SUOAN|OS B1eMYOS GYVIOIPAH €Ez0z © OFGBOUIS 4b-0z OL @AVIOIPAH BulleeulBu o1WeUAG Aq peledalg AVOPAH 10-€0-7Z02

STORMWATER COLLECTION SYSTEM CALCULATIONS (PIPE SIZING)

Project: Job #: Location: Computed By: DG Checked By: MB Date: 3/13/2024 Proposed Single Family Residential Dwelling 5142-24-00053 West Orange, NJ Drainage Area Impervious Coefficient Open Space Area for Coefficient Wooded Area for Coefficient Average Total Area Area (sf) (C) Used Soil Group C (SF) (C) Used Soil Group C (SF) (C) Used Coefficient (SF) (C) Used Yard Inlet #1 Yard Inlet #21 Yard Inlet #22 Roof 3352 2000 1300 2900 0.95 0.95 0.95 0.95 7305 8053 1662 0 0.35 0.35 0.35 0.35 44213 10245 6388 0 0.12 0.12 0.12 0.12 0.20 0.29 0.28 0.95 54870 20298 9350 2900 Total Area (acres) 1.26 0.47 0.21 0.07

Project: Proposed Residential Job #: 5142-24-00053 Location: West Orange, NJ Design Storm: 25-Year PIPE SECTION Computed By: DG Checked By: MB Date: 3/13/2024 Revised: NOTES: 1) Design method used is Rational Method 2) Refer to Weighted Runoff Coefficient table for calculation of incremental areas and C values SUBCATCH INCREMENTAL CUMULATIVE MENT AREA TIME OF CONCENTRATION FROM TO Area (Acres) "C" A x C Ac A x C (acres) Tc to Inlet (min) Inlet #1 Inlet #22 Inlet #21 Roof OCS #4 Basin A Inlet #21 Basin A Basin A MH #7 1.26 0.21 0.47 0.07 0.40 0.20 0.28 0.29 0.95 0.95 0.25 0.06 0.14 0.07 0.38 0.25 0.06 0.20 0.07 0.38 10.00 10.00 10.00 10.00 10.00 I PEAK RUNOFF Tc in Final Tc Q to Inlet Pipe (In/Hr) (min) (CFS) (min.) 0.14 0.68 0.04 0.23 0.24 10.00 10.00 10.68 10.00 10.00 6.80 6.80 6.68 6.80 6.80 1.70 0.41 0.94 0.48 2.58 PIPING INPUT Q cum. for Pipe (CFS) Dia. (In) 1.70 0.41 1.34 0.48 2.58 8 8 8 6 15 Length Man. (Ft) "n" 52.0 129.0 20.0 40.0 72.0 0.010 0.010 0.010 0.013 0.010 PIPING DATA Slope (ft/ft) 0.0200 0.0050 0.0400 0.0100 0.0055 Pipe Full Pipe Actual Pipe Capacity Velocity Velocity (fps) (cfs) (fps) 2.22 1.11 3.14 0.56 6.23 6.36 3.18 9.00 2.85 5.08 7.26 2.77 8.43 3.25 4.65

OUTLET CONTROL STRUCTURE DETAIL

1 WER IW. 619.10 [BASIN 36" HOPE 2 WER Inv: 619.10 45° ORFICE IV 616.60 fe — Prom. 18" HOPE TO MANHOLE 614.90, >) | 45° ormee~7 | O \ Inv 61740, 3 owner —— 4s oance Wane WW 61890, aha S/ 45° once —~ ¥ once inv 61660 " 61490, yor WALL SECTION Au PROP. MANHOLE FRAME AND COVER (CAVPEELL PATERN-# 10128 OF ECUAL) a 620.00 RW 619.90 PROP. GRADE 6° eis BACK =, PAROING (YP) —~ ORT I 2 = 7 ine 61310 : PROP. TRASH RAOK { \ wx exe cn J AK WATER SURFACE ELEVATIONS| {| oPewnc, 3/4" 0m 2-YR STORM = 617.19 \ | atuwiit ovno to YR STORM 619.21 STOCK) 45° ORFICE i We 61740 ~ BASIN 36° HOPE 8 SOLD CONCRETE BLOCK WALLS (TY.) . 8 PRECAST if ‘s 45° ORIACE — \ Be Inv 616.60 apm a ie 3.0" oRIMCE =Se . 144 inv 61490 6° ASN BACKFLL nc 6" HOPE IW: 615.65 OTTOM OF STONE LAYER: 614.80 <7 8° REF. CONC. FOOTING —~ (#0 12" 00. EM) —— STEEL RENFORCED CCOPOLYVER POLYPROPYLENE LADDER RUNG @ 12° OC. PROP. 15° HOPE TO WANHOLE INV UT 614.90 6-3/4" CLEAN STONE APPROVED SUBGRIDE OUTLET STRUCTURE DETAR (OCS) STORM STRUCTURE #5 NOT_T0_SCALE

DRAINAGE AREA MAPS

STUDY AREA EXISTING LOT 21 HEADWALL UNDISTURBED STUDY AREA EXISTING LOT 21 HEADWALL DISTURBED SHALLOW CONCENTRATED FLOW @ 2.5% SL (138') SHEET FLOW @ 2.6% SL (20') C D B A SHALLOW CONCENTRATED FLOW @ 26.0% SL (25') E SHALLOW CONCENTRATED FLOW @ 2.1% SL (126') C STUDY AREA EXISTING LOT 21 HEADWALL UNDISTURBED SHALLOW CONCENTRATED FLOW @ 0.1% SL (175') B F SHALLOW CONCENTRATED FLOW @ 1.5% SL. (140') A SHEET FLOW @ 0.4% SL. (8') STUDY AREA EXISTING CHANNEL DISTURBED G SHALLOW CONCENTRATED FLOW @ 3.0% SL (190') STUDY AREA EXISTING CHANNEL UNDISTURBED 1904 Main Street Lake Como, NJ 07719 T: 732.974.0198 F: 732.974.3521 www.dynamicec.com LAND DEVELOPMENT CONSULTING ● PERMITTING ● GEOTECHNICAL ● ENVIRONMENTAL ● SURVEY ● PLANNING & ZONING Offices conveniently located in: Lake Como, New Jersey T: 732.974.0198 | Chester, New Jersey T: 908.879.9229 | Newark, New Jersey T: 973.755.7200 | Toms River, New Jersey Allen, Texas T: 972.534.2100 | Austin, Texas T:512.646.2646 | Houston, Texas T: 281.789.6400 | Delray Beach, Florida T: 561.921.8570 Newtown, Pennsylvania T: 267.685.0276 | Philadelphia, Pennsylvania T: 215.253.4888 | Bethlehem, Pennsylvania T: 610.598.4400 T: 732.678.0000 EXISTING DRAINAGE AREA MAP 5142-24-00053 DG 3/27/2024 1"=50' DG MB ROBERT P. SHARO FREUDMARK MATTHEW J. BERSC MATTHEW A. WHITAKER 1 3 0 ã