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Home My WebLink AboutSW7110601_HISTORICAL FILE_20110606NORTH CAROLINA F, Department of Environmental Qual STORMWATER DIVISION CODING SHEET POST -CONSTRUCTION PERMITS PERMIT NO. SW 7�1t�(Ql9 DOGTYPE ❑ CURRENT PERMIT ❑ APPROVED PLANS HISTORICAL FILE ❑ COMPLIANCE EVALUATION INSPECTION DOC DATE YYYYMM DD Aston Soil Works, Inc. P.O. Box 86 Simpson, NC 27879 June 1, 2011 JUN 06 2011 Marie Peedin, PE Pamlico Engineering Services, PLLC NC ®ENR 128 Abbey Lane Washington, NC 27889 Re: Seasonal High Water Table Determination for Stormwater Retention Pond Perdue Agribusiness.at 1461 Swindell Road in Beaufort County, NC. Dear Ms. Peedin, As requested, a seasonal high water table determination was conducted on March 31, 2011 for a proposed commercial development in Beaufort County, NC. The method of soil evaluation utilized one hand auger boring to a depth of 36 inches. The boring location was based on a plan provided by you. An enclosed map identifies the approximate location of the boring conducted in the proposed retention pond area. The findings of this investigation suggest a seasonal high water table is approximately 10 inches from the natural surface. The method of determination was based on the presence of soil morphological features containing > 2% chroma 2 color or less mottles. The soil profile described below exhibits > 2% chroma 2 colors or less throughout the profile. The soil profile description contained: 0-18 inches; black (10YR 2/1) sandy loam; weak fine granular structure; friable. 18-36 inches; dark gray (10YR 4/1) sandy clay loam; few yellowish red (5 YR 4/6) concentrations; weak fine subangular blocky structure; fine. If you have any further questions, please contact me at (252) 341-9707 Sincerely, Gene Aston Licensed Soil Scientist # 1261 s� soil I- �Z r! It A Q 40 171 -0 NO V Q' lw! I L W&S I � 'Fr'. I"i t:t'! ;.Jl f I); .-I rl r. IJ,� LOr" F101 J Li' ut J c c I Cal z J 1 e i Cc :!,rTr -,- 'R 4 . .- .* !:iw �Z, :r I W3 110 Lods! 2) DAt "? 11 Q 13 1 pop do,Q? 01 1 CIL 1 "An ?4 1 : A 1 Li�� WS ��01 OZO I I r 0 yz p an wy sy it !a- h i "A sh,'j, I SL .0; Auger Boring Location Map Perdue Agribusiness, Swindell Road Beaufort County, NC Auger DO' Vorks,lnc. on Grove VC 27858 100' I k MSRMaps: Print Page 1 of 1 Send To Printer Back To MSR Maps Change to 11x17 Print Size Show Grid Lines Change to Landscape N SGS Pantego, North Carolina, United States 01 Jul 19744J``, 44 \ 4 !! rr lehop Crew PTS 34Gj 0 rzsx-' � \ y •' • •, •9 y� i' 30 .7, Image courtesy of the U.S. Geological Survey ® 2010 Microsoft Corporation. Terms of Use Privacy Statement http://msrmaps.com/PrintImage.aspx?T=2&S=12&Z=18&X=435&Y=4926... 5/ 17/201 1 Soil Map —Beaufort County, North Carolina (Perdue Agribusiness Site) W 3651' r 35' 35' 59' 3471600 3 7B00 3CB000 3i8200 30400 w w � � I a„ r h 1800 mmm 3a8200 3rB900 3d 00 348800 i+3^p.' AYp SnIa. 111400ifwIn%darAY (8.5-x W)Wmt N Metes A 0 150 300 B00 800 Feel 0 500 1,000 2,000 3,000 USDA Natural Resources Web Soil Survey Conservation Service National Cooperative Soil Survey J 35' 36' 52" 35' 36 1" 5/17/2011 Page 1 of 3 Soil Map —Beaufort County. North Carolina (Perdue Agribusiness Site) s MAPLEGEND MAP INFORMATION Area of Interest (AOl) jZ Very Stony spot Map Scale. 1:11,400 if printed on A size (8.5" s 11") sheet. Area of Interest (AOI) Wet Spot The soil surveys that comprise your A01 were mapped at 1:24.000. Soil$ A ref Please rely on the bar scale on each map sheet for accurate map Soil Map Units measurements. Special Line Features Special Point Features _ Gully Source of Map'. Natural Resources Conservation Service .y Blowout Web Soil Survey URL: http:ttwobsoilsuNey.nres.usda.gov ® Borrow Pa Short steep slope Coordinate System: UTM Zone 18N NAD83 X Clay Spot ^ • other This product is generated from the USDA-NRCS certified data as of Political Features the version dale(s) listed below. ♦ Closed Depression p Cities Soil Survey Area. Beaufort County, North Carolina X Gravel Pit Water Features Survey Area Data: Version 10, Jun 29, 2009 .. Gravelly Spot oceans Date(s) aerial images were photographed: 71`18/2006; 7/19/2006 ® Landfill Streams and Canals The orthophoto or other base map on which the soil Imes were A Lava Flow Transportation compiled and digitized probably differs from the background Reds imagery displayed on these maps. As a result, some minor shifting ,y. Marsh or swamp +++ of map unit boundaries may be evident yt Mine or Quarry Interstate Highways ® Miscellaneous Water US Routes 6 Perennial Water Major Roads v Rock Outcrop N Local Roads } Saline Spot .. Sandy Spot it Severely Eroded Spot o Sinkhole Slide or Slip // Sci is Spot it Spoil Ares Q Stony Spot Ali Natural Resources Web Soil Survey 6/17/2011 Conservation Service National Cooperative Soil Survey Page 2 of 3 Soil Map -Beaufort County, North Carolina Perdue Agribusiness Site Map Unit Legend Beaufort County, North Carolina (NC013) Map Unit Symbol Map Unit Name Acres in AOI Percent ofAOI Ds Dragston fine sandy loam 10.7 2.5% Me Murkalee loam, frequently flooded 5.0 1.1% Pi Portsmouth loam 62.4 14.4% Ro Roanoke fine sandy loam 0.0 0.0% TO Tomotley fine sandy loam 353.6 81.7% W Water 1.21 0.3% Totals for Area of Interest 432.9 100.0% . ...a. Boa Conservation Service National Cooperative Soil Survey Page 3 of 3 JUN 06 2011 i' MIZ1655PC874 �.sru or adtms i' mmmmw a=wr Lm Rrruslsw rover _ 3 ri fts REAL M ATE TAX Pmo Lmd Reoeade o!lSoiel once �, Prepared by Boma►, Thom wm & Styes, P.LLC. fi'arrenton, North Carolina Title Not Examined by Draftsman is NORTH CAROLINA BEAUFORT COUNTY j Excise Tax: $ Tax T.D. Number: See Schedule 1 ? THIS DEED, made this day of Am.V, 2008, by Perdue Farmi Incorporated, a Maryland corporation having its office and principal place of business at P.O. Box I537, Salisbury, Maryland, 21802, party of the first part, to Perdue Agribusiness Incorporated, P.O. Box 1537, Salisbury, Maryland, 21802, party of the second part, i WITNESSETH: THAT, said party of the first part for NO CONSIDERATION, for business convenience, has granted, bargained and sold and by these presents does hereby bargain, sell and convey to and unto the party of the second part, the following described land m Beatdbrt County, North Carolina: See Attached Exhibit `A' TO HAVE AND TO HOLD the above described land. together, with all pnvileW and appurtenances thereto belonging, to and unto the party of the second part, in Fee simple forever. And the party of the first part covenants with the party of the second pan, that it is seized of said I 1K1655PC 75 ' land in fee and has a good and lawful right to coavey the same in fee simple, that the same is free and clear of all encumbratues, vwept any that may be specified herein. and that if does hereby warrant and will forever defend the title thereto agauBt the lawful claims and demands of all persons whomsoever. 1 in its name bi STATE OF I HEREBY (.:YKFJFY that on the P day of & 2008, be Notary Public of the State of Maryland, Whally appeared Herbs acknowledged himself to be the Secretary of perdue Farms Incorporated, a that be. as the Secretary of Perdue Farms Incorporated, being authorize document for the purposes contained in the document, by signing the n himself as Secretary. WITNESS my hand and official seal this Lday of, auB �G J11Public A My Commission Expires: Upon recordation, please return to: Kelly Shubic Weiner Venable LLP 750 E. Pratt Suva Suite 900 Baltimore, Maryland 21202 e me, the subscriber, a D, Frerichs, Jr., who aryland corporation, and to do so. awcated this r: of the corporation by �U "1655rc8'78 Schedule 1 Reference: "Pantego/Bishop's Cross, Nor& Tax I.D. Number 09-032735 091655PC8i 9 gR o ,kOIy aS.a Sao AV S$...p..C�r�Ys .l o kMw�� . 96 o ntl� N O� 4n °FU CM� .l tl�Ym Y. N� M�mY VN DW O '1 AFYM, Y4 D Aw D .� 47 om '. r wm-• r .. 4a� 0,3M• fiFS rYwi$a} gDYpi gig �GM�A.Fdp .i�AN. ��m� M1op i�OC� M Y 1VYOO� Mm M YV WD �� All 4�n• °4$ ^o3.y`°�e g�g°$s..gMi 'Oop��6M�Cn��a'�'..'P�9e5myr�m8m��eyGa�w �+�w ~YpOsN iOA IMrYsit! Y�■��WCp YDD QM"N Fill OWMY ENWOyOOM�w l&D�t��8 On p° b:�LVS �}Yqerydb�oMw�malD®Mq�N�OLyq 9a R tl pybT .• 3 Y mW �Y wlb'+w N YO Yw CJLD tl e spy m O �/GD E rqOaf .M 1� A moo wY �a D Oau w CY Mp3 4 tl �m a$wo DpOoAmO � pO ,�jDW DD OM AIgo .° O p Y D O O -. M�• in pp 9- 4 k. M �• yp yA D. • 0� aC yssr■ GSGWy w" fw[sill-. ODO pooi a1e — NM aO.•1p �q�VV •yyy LSS YC�LN88e■O .n'a1: q qm pd Om O..°tl.l-. bw. MVSb^LwY�3t7°44 YiYY r•!!ll++++YYY MO WF 40 iDMN.. 00 �m 4 ARC 1MO9' \ yr 6la \ \\ z _ z � t'ID9li• N zr ;max} - i . W • OO ,\ 5r7 AcresI 0.B. 914, P. 289 - TRAGf 0 O W .. z z. °' - ' I . .� I .: _ AP0e1E A.Y \` 'G.,tet O W m gp$ oo ��Gi wm 08 BII P 299-TRAIT U .\ O t 1. ROOD L. PoCNAR090H CERTIFY THAT UTA FROM ARN ACTUAL LTU L: L AN) BUNEY..:. WN AND .. 9lFUMM i ;3 MAP WAS DRAWN . USII:O DOCUMHf9 OF RECOM A9 SNONN'ON T0I YAP AND THAT . i11E MM OF CLOSURE U 1: 10,000 AS CALCUATM BY LATrNUVM _ Afq MPARTI2a:4 TUT THLS YAP WAS PREPARED IN'ACCOMN. : . _ - WNH G.S. �TdO A9 AUDMD. NO DETETXRI OTHER THAN A915 . SHORN p: THS)IIP-1A9 BEEN 1.1ADE A9gIT 05. 9730, SERAX 3.'...' ff) IIO YY IA1 SEAL Th 5 ICATi P APPoL r .RICHARDS X, P. Ste,- E .. NORTM'CAROIVU .Td i �}' . BEAUFBiT 02' OB' Mir I LAMY L RICRMD..GL MTMY PUBIC , L. RX:HARDSON, REUSIERED LAtA SURVEYOR. PEASMlALL E W THIS MY AND ACK�DGED WITM58 MY XAlD AMD SEAL TMAI 01' GOING 6ITM"TON OAY.OF AP1EL,' WI9IAUENT. \ L L RICXARD, JR_ COYYUSAN URIRE9 B/22/9T JUN O. 2011�.y gfc bit _ "Aic C. Pantego Township Beaufort County North Carolina Scale: I"=100' - Survey Date: April 15, 1993 SUNEYM BY: HOOD RICNARDSON, PA 20e NORTH YA U STREET WASHINOTBC KC. 278e9 PHONE 1919; 975-3992 - 9!-OF099 O m STORM WATER MANAGEMENT PLAN Perdue Agribusiness Inc Pantego Grain Storage Pad Pantego, NC CARO'',,, �pPQ FEssla� �9�+ ¢ t•, SEAL OIN U. WK 9. Project Engineer PAMLICO ENGINEERING SERVICES, PLLC 128 ABBEY LANE WASMNGTON, NC 27889 252-945-2993 EXPRESS JUN 06 2011 NC ®ENR 1„ca�jV �'�. .o �A'� L c- S �f �yi I ... • �, • .�� • v. Storm Water Management Plan LOCATION: This site is located on Swindell Road in Pantego, NC. The site is currently an open grass field with an existing concrete grain storage pad which is to be removed and replaced with the project.. The location of the site is approximately I mile north of US 264 on NC 99. EXISTING DRAINAGE PATTERNS: The property has existing road side ditches and is graded toward an existing railroad ditch. The property is a large tract which drains into Pantego Creek which is a tributary to the Pamlico Tar River Basin. PROPOSED PROJECT: This project will consist of stripping the site and grading the existing lot for construction of the grain pad. All drainage shall continue in the same manner as was before construction. Any excess material from the site which is not used shall be hauled off to an approved waste site. All fill material to be placed on the site shall come from an approved borrow pit. Storm Water Management The entire lot area is 15.96 acres based on the meets and bounds description found on a map the owner had surveyed by Hood Richardson, PA. The portion to be developed will have 2.14 ac of impervious surface. The area of development has an existing grain pad which is to be removed prior to construction of the new site. This existing pad is apx. 49,745 sf and therefore the net additional impervious area is 43,473 sf. The existing site has approximately 196,020 sf of existing impervious area on site Using the total property area of 15.96 ac and new development of 0.98 ac the site is at the 28.2% impervious and the stormwater will need to be treated as high density. The existing site drains to the south and east and will continue to drain to the south in the proposed drainage swales shown on the plans. These drainage swales will take the water to a wet pond which will detain the water for a minimum of 2 days. This basin will also act as a detention device to offset the peak storm event and only allow the predevelopment 1 yr 24 hr storm event to pass out of the system. The only area draining to the pond is the portion of the new pad which is additional impervious area only. All calculations are shown and are attached to this report. "0 r" 0 If 'J % W, if 'IJ 'I Ij 0 Run Off Calculations Simple Method Rv = 0.05+.0091 post dev 1= 60.16 % Rv= 0.5914 v Volume to be Controlled V = design rainfall x Rv x drainage area DA 1.66 ac -- Design Rainfall V 1.5 in Volume= 5345.8 cf Note: Pond for new impervious area only. jr -I LI—sc L) , - ,.; W! .. 'k 31 1JJ:)!G I :,:Gil i` , Perdue Grain Pad Pond Drawdown Sizing Calculations Total Storage Volume 5384 cf Temporary Pond Volume 5346 cf Days to Drawdown 2 days Q = 0.0309375 cfs Orfice Size for Pond Structure a= 0.01573862 cd 0.6 h 0.5 q 1 0.0309375 cfs r = 0.070779647 0.142 FT 1.698711528 IN Say 1.5 INCH opening -�_,_�., ,.I_ �� ` �� _ I _� .. ,.1. _�_..., .. '�i.. r �;C �;- -ice J ;t:9A',(�r 4d Precipitation Frequency Data Server Page 1 of 4 G 9' POINT PRECIPITATION FREQUENCY ESTIMATES iJ# FROM NOAA ATLAS 14 BELHAVEN, NORTH CAROLINA (31-0674) 35.4992 N 76.6864 W 3 feet from "Precipitation -Frequency Atlas of the United States" NOAA Atlas 14, Volume 2, Version 3 G.M. Bonnin, D. Martin, B. Lin, T. Parzybok, M.Yekta, and D. Riley NOAA, National Weather Service. Silver Spring, Maryland, 2004 Extracted: Fri May 27 2011 Confidence Limits Seasonality Related Info GIS data Maps Docs Return to State Map Precipitation Frequency Estimates (inches) ARI * (years) 5 mm �kRwk�� I0 ]0 15 m5 30 mm 60 mm 120 min 3 hr 6 hr 12 hr 24 hr 48 hr 4 � ��I 7 d� ]0 -day LO 20 30 day 45 d] 60 F - =1 0.45 0.72 0.91 1.24 I.55 1.82 1.96 2.35 2.76 3.27 3.77 4.26 4.98 Efl 7.66 9.46 I I.74 14.09 �2 OF531 0.84 1.06 1.46 1.84 2. 18 2.34 2.81 3.30 3.97 4.57 5.16 6.00 6.79 9. ] 3 11.26 13.89 16.63 0 0.60 0.96 1.22 1.73 2.22 2. 99 2.90 3.48 4.09 5.13 5.87 6.56 7.54 8.42 1 1.09 13.54 16.61 19.64 10 0.69 1.09 1.39 2.01 2.61 3.23 3.51 4.21 4.99 6.11 6.99 7.72 8.80 9.75 12.71 1537 18.85 22.07 25 0.77 1.23 1.56 2.31 3.08 3.89 4.28 5.16 6.15 7.55 8.66 9.41 10.63 11.67 I5.00 17.89 22.00 25.39 50 0.85 1.35 1.71 2.58 3.50 4.51 5.01 6.05 7.27 8.79 10.12 10.83 12.15 13.27 16.87 19.90 24.56 28.01 100 0.92 1.46 1.85 2.83 3.90 5.13 5.76 6.98 8.44 10.15 11.74 12.37 13.77 14.96 18.84 21.95 27.23 30.66 200 0.99 L57 1.98 3.08 4.32 5.79 6.58 8.01 9.73 11.64 13.55 14. 55 15.52 16.76 20.91 24.07 30.01 33.34 500 1.07 1.70 2.14 3.40 4.88 6.70 7.73 9.45 11.59 13.86 16.26 16.53 18.02 19.34 33.83 26.95 33.89 36.98 1000 1.16 1.82 2.28 3.70 5.40 7.53 8.81 10.81 13.36 15.74 18.59 18.79 20.12 21.45 26.I7 29.21 36.98 39.78 These precipitation frequency estimates are based on a partial duration series. ARI is the Average Recurrence Interval. Please refer to NOAA Atlas 14 Document for more information. NOTE: Formatting forces estimates near zero to appear as zero. * Upper bound of the 90% confidence interval Precipitation Frequency Estimates (inches) ARI 5 10 15 30 60 120 3 6 12 24 48 4 7 10 20 30 45 60 (years) min min min min min min hr hr hr hr hr day day day day dayI day day �1 080 7 20 22 2683 3 446 539 823 0 7 4.96050 =2 0.58 0.93 1.17 1.61 2.02 2.42 2.63 3.17 3.72 4.35 5.02 5.62 6.49 7.33 9.80 12.01 14.87 17.66 00.66 1.06 1.34 1.90 2.44 2.98 3.25 3.93 4.62 5.62 6.44 7.14 8.15 9.08 l t.94 14.45 17.77 20.88 10 0.75 1.21 1.52 2.21 2.88 3.57 3.92 4.76 5.63 6.68 7.65 8.40 9.52 10.51 13.67 16.39 20.17 23.47 25 0.85 1.35 1.72 2.54 3.39 4.30 4.77 5.80 6.91 8.25 9.45 10.2-IF- 1.47 12.56 16.14 19.08 23.55 27.01 50 0.93 1.49 - 2.83 3.84 4.97 5.57 6.80 8.13 9.60 1 1.04 11.79 13.14 14.31 18.16 21.26 26.31 29.84 100 1.01 1.61 2.03 3.1 14 .28 5.65 6.40 7.82 9.43 11.07 12.84 13.51 14.93 16.16 20.32 23.50 29.22 32.73 200 1.09 1.72 2.17 3.38 4.75 6.38 7.30 8.95 10.87 12.72 14.83 15.37 16.84 18.14 22.59 25.83132.31 35.66 500 1.18 1.87 2.35 3.75 5.38 7.39 8.59 10.55 12.93 15.20 17.90 18.15 19.64 21.06 25.86 29.07 36.67 39.70 1000 1.27 2.00 2.52 4.07 5.95 8.32 9.81 12.10 14.93 17.33 20.59 20.72 22.05 23.49 28.53 31.66 40.21 42.94 ' The upper bound of the confidence interval at 90% confidence level is the value which 5% of the simulated quantile values for a given frequency are greater than. "These precipitation frequency estimates are based on a partial duration series. ARI is the Average Recurrence Interval. Please refer to NOAA Atlas 14 Document for more information. NOTE: Formatting Drevents estimates near zero to appear as zero. * Lower bound of the 90% confidence interval Precipitation Frequency Estimates (inches) ARI** n 10 15 30 60 120 nn 12 24 48 I4(� 10 20 30 45 60 (years) min mm mm min mm mm I hr II hr I hr hr hr I day I day I day day day day day http://hdsc.nws. noaa.gov/cgi-bin/hdse/buildout. perl?type=pf&units=us& seri... 5/27/201 l . r r •. •1 r{II 1, J. 1 . !r rl• r( 1 ,I1. 1 , 1. r .� r J - _ � r r . . — � � • _ .. r' .. q • is _ _. _. ,Precipitation Frequency Data Server Page] of 3 POINT PRECIPITATION /W�)) 0 FREQUENCY ESTIMATES i��j FROM NOAA ATLAS 14 BELHAVEN, NORTH CAROMNA (31-0674) 35.4992 N 76.6864 W 3 feet from 'Precipitation -Frequency Atlas of the United States" NOAA Atlas 14, Volume 2, Version 3 G.M. Bonnin, D. Martin, B. Lin, T. Parzybok, M.Yekta, and D. Riley NOAA, National Weather Service, Silver Spring, Maryland, 2004 Extracted: Fri May 27 2011 Confidence Limits Seasonality Related Info GIS data Maps Docs Return to State Map Precipitation Intensity Estimates (in/hr) ARI * (years) 5 mm ]0 mm 15 mm 30 mm 60 min 120 12 hr �� 24 hr 48 hr 4 d� 7 � 10 day 20 30 d� 45 60 mm - - =1 5.45 473 47 3.62 2.48 I.55 0.91 0.65 0.39 0.23 0.14 0.08 0.04 0.03 0.02 0.02 0.01 0.01 0.01 = 6.32 5.06 4.24 2.93 1.84 1.09 0.78 0.47 0.27 0.17 0.10 0.05 0.04 0.03 0.02 0.02 0.01 0.01 =7.21 5.77 4.873.462.221.340.960.580.340.21 0.120.070.040.040.020.020.020.01 10 8.22 1 6.57 5.54 4.02 2.61 1.61 1.17 0.70 0.41 0.25 0.15 0.08 0.05 0.04 0.03 0.02 0.02 0.02 25 9.28 7.39 6.24 4.62 3.08 I.95 1.42 0.86 0.51 0.31 0.18 0.10 0.06 0.05 0.03 0.02 0.02 0.02 50 10.19 8.12 6.85 5.16 3.50 2.25 1.67 1.01 0.60 0.37 0.21 0.11 0.07 0.06 0.04 g.g 0.02 0.02 100 11.04 8.77 7.39 5.66 3.90 2.56 1.92 1.17 0.70 0.42 0.24 0.13 0.08 0.06 07041 0.03 0.03 0.02 200 1 1.88 9.41 7.92 6.16 4.32 2.90 2.19 1.34 0.81 0.49 0.28 0.15 0.09 0.07 0.04 0.03 0.03 0.02 500 12.89 10.20 8.56 6.81 4.88 3.35 2.57 1.58 0.96 0.58 0.34 0.17 0.11 0.08 0.05 0.04 0.03 0.03 1000 13.86 10.91 9.13 7.39 5.40 3.77 2.93 1.81 l.I 10.66 0.39 0.20 0.12 0.09 0.05 0.04 0.03 0.03 ' These precipitation frequency estimates are based on a partial duration series. ARI is the Average Recurrence Interval. Please refer to NOAA Atlas 14 Document for more information. NOTE: Formatting forces estimates near zero to appear as zero. * Upper bound of the 90% confidence interval Precipitation Intensity Estimates (in/hr) AR1** 5 10 15 30 6-0 120 3 6 12 24 48 4 7 10 20 30 45 60 (years) min min min min min min hr hr hr hr hr da day day day day day day -1 6.01 4.81 4.00 2.74 1.71 1.02 0.74 0.45 0.26 0.15 0.09 0.05 0.03 0.03 0.02 0.01 0.01 0.01 F- 6.97 5.57 4.67 3.23 2.02 1.2] 0.88 0.53 0.31 0.18 0.10 0.06 0.04 0.03 0.02 0.02 0.01 0.01 F 7.94 6.35 5.36 3.81 2.44 1.49 L08 0.66 0.38 0.23 0.13 0.07 0 05 0.04 0.02 0.02 0.02 0.01 10 9. 55 7.24 6.10 4.42 2.88 1.78 1.31 0.79 0.47 0.28 0.16 0.09 OA6 0.04 0.03 0.02 0.02 0.02 2-5-1 10.20 8.12 6.87 5.09 3.39 2.15 1.59 0.97 0.57 0.34 0.20 0.1 10.07 0.05 0.03 0.03 0.02 0.02 50 1 11.20 8.92 7.53 5.67 3.84 2.48 1.86 1.14 0.68 0.40 0.23 0.12 0.08 0.06 0.04 0.03 0.02 0.02 100 12.139.44 8.12 6.224.282.832.131.310.780.460.270.140.090.070.040.030.030.02 200 13.04 10.34 8.70 6.77 4.75 3.19 2.43 1.49 0.90 0.53 0.31 0.16 0.10 0.08 0.05 0.04 0.03 0.02 500 14.20 11.23 9.42 7.49 5.38 3. 99 2.86 1.76 1.07 0.63 0.37 0.19 0.12 0.09 0.05 0.04 0.03 0.03 1000 15.26 I2.02 I0.06 8.15 5.95 4.16 3.27 2.02 1.24 0.72 0.43 0.22 0.13 0.10 0.06 0.04 0.04 0.03 The upper Dound of me confidence interval at 90% confidence level is the value which 5% of the simulated quantile values for a given frequency are greater than. These precipitation frequency estimates are based on a partial duration series. ARI is the Average Recurrence Interval. Please refer to NOAA Atlas 14 Document for more information. NOTE: Formatting prevents estimates near zero to appear as zero. * Lower bound of the 90% confidence interval Precipitation Intensitv Estimates (in/hr) http://hdsc.nws.noaa. gov/cgi-bin/hdsc/bui ldout.perl?type=idf& un its--us&ser... 5/2 7/2011 ,'ice `I� r , I I I! �. __ • � � , O1. 1_ }t I-J 1, ` — ., L 1iil _ - � ( ,Ivy �� , I•, -.'I l 1Q7 if � •Ili. I ir•'� i1 '., . � � , , ,, .1 �' , � .. • 1Y` � Imo'.. / 'IL' , 111 .Ir i., t 1 •1 •.I i I � ! i I 1 11• r , 11„ ,1 '11 1�'li ,� -1 I • 1 1 ,11 1�.1. ' • II - 1 1• 1 i 1 ., �I 1. i, , � , if _ F_{�ir f. ., .. _•�� Iq j•7. Channel Report Hydraflow Express Extension for AutoCAD® Civil 3DO2009 by Autodesk, Inc swale 1 Trapezoidal Bottom Width (ft) = 2.00 Side Slopes (z:1) = 5.00, 5.00 Total Depth (ft) = 1.50 Invert Elev (ft) = 6.00 Slope (%) = 0.50 N-Value = 0.030 Calculations . Compute by: Known Q Known Q (cfs) = 8.04 Elev (ft) Section 8.00 7.50 7.00 6.50 5.50 Friday, May 27 2011 Highlighted Depth (ft) = 0.72 Q (cfs) = 8.040 Area (sqft) = 4.03 Velocity (ft/s) = 1.99 Wetted Perim (ft) = 9.34 Crit Depth, Yc (ft) = 0,53 Top Width (ft) = 9.20 EGL (ft) = 0.78 2 4 6 8 10 12 14 16 18 20 22 Reach (ft) Depth (ft) 2.00 1.50 1.00 0.50 M _n rn e i is �r1•- . �4'.i ..': 1 �j r .•1 Ci '^. J i i i l +1 ' l _• / eta , .a..leVUki'. L4 Channel Report H�draflow Express Extension for AutoCAD® Civil 3D® 2009 by Autodesk, Inc. swale 2 Trapezoidal Bottom Width (ft) = 2.00 Side Slopes (z:1) = 5.00, 5.00 Total Depth (ft) = 1.50 Invert Elev (ft) = 6.00 Slope (%) = 0.50 N-Value = 0.030 Calculations Compute by: Known Q Known Q (cfs) = 7.68 Elev (ft) Section 8.00 7.50 7.00 6.50 AM 5.50 Friday, May 27 2011 Highlighted Depth (ft) = 0.71 Q (cfs) = 7.680 Area (sqft) = 3.94 Velocity (fUs) = 1.95 Wetted Perim (ft) = 9.24 Crit Depth, Yc (ft) = 0.52 Top Width (ft) = 9.10 EGL (ft) = 0.77 2 4 6 8 10 12 14 16 18 20 22 Reach (ft) Depth (ft) 2.00 1.50 1.00 0.50 MCI n rn St r•�t;•. �r ".r "�lii 1 m _ (r Tar -Pamlico Stormwater Rule 15A NCAC 28.0258 E `° RE"S Last Modified 612/2011 Coastal Plain of the Tar -Pamlico River Basin: Includes Greenville and Washjneton as well as Pitt and Beaufort Counties JUN 06 2011 n.. Total Nitrogen and Total Phosphorus Loading Calculation WorkAWM tAVYMted) Project Name: Perdue Pantego Date: 513112011 By: Marie Peedin Checked By: Directions (same for pre -development and post -development tables): > Enter the acres of each type of land cover in the green boxes. The spreadsheet will calculate all of the values in light blue. > Compare total areas of development in pre- and post- tables for consistency (bottom of column (2)), and also for consistency with the site plans. If all of these values arc not the same, there is an error that must be corrected. > Unless drainage onto the development from ofisite is diverted around or through the site, offsite catchment area draining in must be included in the acreage values and treated. Pre -development: (' �5 1iAverage .,(5)c -' vliY (6); b`" F Y ''n p'(7)�7a x' �*Column�"',,, r"',T a of Cand Cover Area,,. M'Forinula EMC i A'Xolumn `� rAverage �EMC, .•s .� '[� �i `rw acres ka O.Sl:+�9.1'1 .`of�TN mL °•: 2 3'•'4 • ofTP' m L` "` "2 ': 3 ' 6' •Transportation -impervious" 1.25 1.94 2.60 6.29 0.19 0.46 Roof rmpeewrvmuk 1.94 1.95 4.72 0.11 0.27 . Managedpervious'." 13.46 1.94 1.42 36.99 0.28 7.29 r " Managed'p;ervious " 000 1.94 4.23 0.00 1.23 0.00 Kr) ` �,•rMana edrvious ; ,. '" •� 'r" 8 -'E•e- ' - OtUO 1.94 2.04 0.00 0.62 0.00 WOO ded�pervlous ,�,'i 0.00 1.94 0.95 0.00 0.14 0.00 r r a ,',.,,, Yar: ITN Loading g t � `TP l:oadjo Fraction;14ervious (1) g"' 0.16 , �s Ta.c,� r'. .t 48.00 yX I.... r.•B 8.02 ,. ,ar„t, ,y � . ,,• a"^' ,;t p•s" .. . (Ib/Yr).= TN Eap Coen: uTP E:p'Coeft Total Area of DeveloiA- pment,,=.ct, " 15.96 rr s.�,..5. "(N' L.a„ - 3.01 0.50 ". ' s...,•a" H .c. ». . (Iblac%Yr) n ,,a-ry(Ib/adyr)= Post -development: rt(2)-' svl e. (3)i-O-V s , lj+ piiof Lend Cover ' •`'�/ .("`EArea , t S M -Formuln EMC.y,: 'CoIumnit Average EMCI umW' .... ....,.•. ...,�,.. 5.. �, ,.... a.. • ,'A.! -w.. acres :: 0:5L:+9iirl ,Average 1 r 1 i. ` of:TN m L .. *° 2 •. 3 i 4 G lr :ofTP, m "L ..: bon •� yu 2 •. 3 6 '.•< • ' p t ' x.n �x Wit. . n, .t<, wr ,Trmsportation impervious• -; 2.25 2.51 2.60 14.66 0.19 1.07 Roof impervious n, °, 1.25 2.51 1.95 6.11 0.11 034 a •,,l Al 4„'" Managedpervious�r,a ;, 12.46- 2.51 1.42 44.33 0.28 8.74 Woodedlpervious , 0&0 2.51 0.94 0.00 0.14 0.00 fi�°U p'•v"n�h.,..,•ir�'1.•L1+.vat5?q,L'. a•1 ti i �,"; e � v , „ Fraction Impervious (1) ;, 0.22 yr >'�: a �3 ; , TN Loading ', 's k� 65.10 ` TPyLoading 10.16 ,: ,. ,• _ :wi ' ,? v sWs r .+�� xrr � _9;�_ 5 (Ib/yr).... 5 „(Ib/Yr).,= '. pia to • f P a , ' +'. " '� -, TN Exp "Coed. TP, Expa Coeff. Total Area of Development = + 15.96 ,y3 i r ryr „ r 4.08 4,.. 0.64 Note: The nutrient loading goals are 4.0 Ib/aclyr for TN and 0.4 Ib/ae/yr for TP. If the post -development nutrient loading is below these levels, then no BMP is necessary. Otherwise, the next worksheet calculates post -development IN and TP loadings after BMPs are installed. :.Q )A;_ A Ri'` c. it"1,- FYR!A. ^.. Dtlr�t�. -11•, ^{.3'd If rt;fa'il' 4"..•l Irl'1J t Il-.........'..�� rt ':1.; :' :Y/ r'i'. ti rt r'9f � 1 L] IiJ'1 , r•'le;. '{' 7 )�•' r r � ..Iy.'.dW .I.\'••1,.,,... ,, j.;t, .d! ..r .J t,.. .'I r':,, r., T.,iL • ♦. 11 , .i .•i' ., `ILC [i• JIt _r „1.!hr) � ,�; t ',},h,-"; o;. Nr nr ., .. .•u.r.;r.i. .•, i lil !•a.•i 1'- ( Ifr� , Le ••_,�4' ... t,• tl,li �. rl,.. 1, :1,1 ,r.0• _ _ _I _ _ -' - � • i . F J' , i i (1, I I.:� I_ 1 r)d,r JIIi,:.",• P n � ' 1, ❑I:`, f r if r j _�.. ...; ;.,__.'.- '_.I—__ _ , i _ __'`h—♦d,..P ,•�-~�.'i L1 i.r +... 1 � ::7+r lLwri e S 1 X t r I t S4. fif} f j'.•_...... .. Il ,...... ..... .._'.'_......,.,. - �. .�Irl.-... ter_ __.._. ..�_.. _...... -..') .! ._.._._. .. .... ...._. ..... _♦.J Tar -Pamlico Stormwater Rule 15A NCAC 2B .0258 Weighted Average of Nutrient Loadings from the Catchments: Last Modified 5123103 . .. "! t'Cnt hmimt Post-BMP Poit BMP i nl K}5 �' tt.s '�Arreage 'TN Co"admg TP, Londmg'�, tq,rs F uCetehment It '4 vI K 1.60 8.03 0.67 'Catchment 2 y ?; �n �t, 14.36 3.29 0.54 Cahhmentl. 0.00 0.00 0.00 y yi '1'OTACEOR'DF.VEIAPMENT 15.96 3.76 0.55 Note: The nutrient loading goals are 4.0Ih/adyr for TN and 0.4 Ib/ae/yr for TP. If the post -development nutrient loading is below these levels, then the BMPs planned are adequate. Otherwise, additional BMPs and/or modifications in development plans are required. ,tl :` „) ,ti � � � :, 1i.�n a e Y.. `.. �. e'a,L.l ' 1; ri4 pi•, fe e I 1 Tar -Pamlico Stormwater Rule 15A NCAC 2B .0258 Last Modified 5123103 Coastal Plain of the Tar -Pamlico River Basin: Includes Greenville and Washington as well as Pitt and Beaufort Counties BMP Removal Calculation Worksheet (Automated) Project Name: Perdue Pantego Date: 513112011 By: Marie Peedin Checked By: Directions: > It may be advantageous to split the development into separate catchments to be handled by separate BMPs. The tables below allow the development to be split into as many as three catchments, and can be copied for greater than three. NOTE: Unless runoff Bowing onto the development from o8'site is routed separately around or through the site, the offsite catchment area draining in must be included in the acreage values of the appropriate land use(s) and treated. > Above each table: Enter the catchment acreage in the top green blank. Based on a comparison of the post -development TN and TP export coefficients you calculated above to the rule requirements of 4.0 Ib/ac/yr TN and 0.4 Iblactyr TP, select BMP(s) from the list for treating the catchment runoff. Enter the chosen BMP(s) nutrient removal rates in the green blanks. If more than one BMP is to be used in series, the combined removal rates will be calculated automatically in the blue blanks. > Catchment Tables: Enter the acres of each type of land cover in the green boxes. The spreadsheet will calculate all of the light blue boxes. NOTE: Compare the Total Catchment Acreage for the Development (final table) to the value you established in the pre-BMP worksheet tables, and also to the siteplans, for consistency. All of these values need to be the same �Y. �•4+4 w•tTN'; 'd' �A,t TP r r h".4 i Design;Standardoa ^�-'. BMP Wet Detinlron Pond 148!! 25 40 NC BMP Manual x Stcrmwatcr Wetland wt, 40 35 Nutrient , ; NC BMP Manual ^qua 41,»e,�,�Sand Ndte�;'�i Removal,. ,c= :;;.,.t ,. 35 45 NC BMP Manual Y ltl ' hn i>'ry{ky tnGe, Rates Bioretennon n 35 45 NC BMP Manual ,` tied n^ SAd eales �P ..Crass Swales 1 �a� : 20 20 NC BMP Manuel t Ve'getated Fdter'Slnp rv/�; 20 35 NC BMP Manual ry � 02• � y#�,,. C9�i •,;. Dry Detention a ` 10 10 NC BMP Manual Catchment /: Total acreage of catchment I = 1.6 ac First BMPs TN removal rate = 20 % First BMP's TP removal rate = 20 /o Second BMWs TN removal rate = 25 % Second BMP's TP removal rate = ;0 % Third BMPs TN removal rate =WKO% Third BMVs TP removal rate = 0 % TOTALTN REMOVAL RATE= 40 % TOTALTP REMOVAL RATE= 52 % •„ P) t e(2)r '(3) to (SI t (6) `V� (7) y iType.of Lend Coveh,i q �S� Catchmenp SM9Pormula t",(4) Average EMCI yaoi Columni,4t� p rAveregeEMC ur,4Column t '' ip h ' •0=" -'*Acres 'o oSi'+9 LI , t-`ofTN m L ` ' 2 2. 3 - 4 i Csof TP. m 1..: 2 `• 3 6 �7ranspoitahoo rmpernousl^® 6.20 2.60 16.11 0.19 1.18 Roof impernr ous,'" ® 6.20 1.95 0.00 r L a.�. 0.11 0.00 ,Nlauaged peAh us 6.20 1.42 5.28 0.28 1.04 �� a � I Wooded pervrous,�R tgu rti� ® 6.20 0.94 0.00 0.14 0.00 rdl,f / ti MArea taken up by BMPt'(r'�.�d ® 6.20 1.95 0.00 0.11 0.00 `r rc Md' r"'''vi ,ot:k,,:-" rrlw'G� �,.. Fracboa'Imperymus (p 0.63 "'t,*ti ,,t -,. wPrc-BMP'1'N 21.39 ""+I rcBMP7'P 2.22 , t „Load, (Ib/yr)=; `Logd_(Ib/yI, •^f. 1% ?�� `w' i a''rr Y°t Fr• •.Pre=BMP,TN �' PrrBMP,TI' 7 otal Area of Development >r p .. .::.,^ • , t„``.' 1.60 ,6r.*-u r .1.31w. Export (lb/adyr) 13.37 Export (Ib/ac/yr) 1.39 'P°u.• il'��z wPdst BMP TN ' sl 12.84 Post BMP TP 'ri 6 1.06 f^ p`..°; i4n'n'`ke �.`;.Ce.il'1 rqn t�r`Y.r1� (Ib/yr) S11 Luad (-'"'i . "� . Posi,BMP�T 0.67 , EdxPpoosrtt (BItiM/ePc/Ty'Nr) Export(Ib/ee/yr)802 "i,{ 1'i rf fr I{t': L.`�•1' 'J 1� f" 11!lii �, :i�%"i(Ij _ ._«.. .. ' � i ') ,1. f I � fl ;. .. _... .- -- .... r.. ..y1 u"�,c.rl,� ,.,t k_I'Y '�diu P; nu:u�"ele��:. .r'., tiF• . `" � ! 1 _ _ _ _ ____ .. __ ii ,' 1 . n a . ..t,l ,. I. .. .po. .. ..... .., ,-.. n .. ,.. tr I .. ., . .. I . , .'r .. ,,.' t :,m: e,:,, ,,, t. 1 r .. � r ". .. _ r 1. „1 '_ S., , ... . . 1 ... 1 1 1 � 1 . �.. � � 1 1 t..I ) i _.. , ; _..I .. .�_ L.I. rY.r .ab:vlr,. r. 1m l"Icf I I ' � .__ .... ___ __ _._ ._.. _ .. _ ..._.1 3'-'ru ...i 1 to .. •i! 4 .. �. — - - - ._.. ..:r r- ,. __._ .. __ .. _ _.I l , i ,,, .. ,, r " ., er � : I , - - -'- -- —_ _.. - - ___...__ -...a � �! • , . � . , ! 1,, . •.,, ,•I r { ,. 1 - I .. � ,., t I r. .. .,I ., ,r . .; - ._ � ,I __ . ' , 'H. 1 p�. r..t .,• u , li, .v •R.url 'r r•' :n. ,.n-,1 " 1 '1. �t ��,.. •,,-, ., j I I 'N� { ! 1 .r r r i r r .. I { .11" 1':. _ .. .. n. rel'•!1, j. Lr•�1 ( I�. { ..__ _ 1 _ � .�_. __. ._ .... _ _.� _ _. .. _.. ' .. __.. " „ r.. 1 tl I '1 ' .. ... rrllrl,.Ll { ' . f L._ ..... l r - ___. _ .... _. .. .. .. .. _.r ___. _. �__ _.... ___ r .._ _.. _ _ ___ . _ 1 4 _. ... L._. _. __ 1_ .. �.F ._ ._ _� _ ._ _ _. _ _ _ _ _ r. I � ..1 f1 -.r I f.'_rf � A f.i 1.'.n r L1 . ._ _ .. I _.. _ _ _ __ _.. ___-_. — -_ - I__ }. _.. _.. .�._. __ _ I _ 1 I . 1.. r 1 1 " r. 11... T' .. ..__ •.� .f _I _ _ _ __ _ _ ._ _ ..._. I 1 t _.. _ _. _.._ ... .. _ ._... 1 •..1 "I' .'. 1 r li. 1•I I r. .n'.'1 r,...'If:,l, � It , .+ bll ri r. a �%j'r.r �I .r. � ' i , r. •..r f ! r. rt.l 1' 1 1 ion . �_y. _... .��._;. J '7 .i. �. _..... �._ 1 j •• l ' .. I u..a r11 1111, 1i Tar -Pamlico Stormwater Rule 15A NCAC 2B .0258 Last Modified 5/23103 Catchment 2: Total acreage of catchment 2 -F 14.3(. ac First BMPs'fN removal rate = % First BMPs'fP removal rate = Second BMPs TN removal rate = % Second BMPs TP removal one= % Third BMPs TN removal rate = % Third BMPs TP removal rate = % TOTAL TN REMOVAL RATE = 0 % TOTAL TP REMOVAL RATE = 0 % slb(4) 'r (5) '� i (6) .-` (7) K, ; o• Type of,land Cover "o 'Ca'tehment SM For`mula Average EMC+ gGolumo¢ .Average NMCii x1Columo'C n..,' .".Acreii'e. 10.51 ;ofIN taniju -", :(2) 3 4 !"oGTP, m L i. 2 (3)" 6 Ympe ,f4 It25.' 2.09 2.W 6.81 0.19 0.50 rrunsportatmn rrvmussy. 1�1 Y j " 4 P vi �(:h1l ii Roof. impervious y,q _. •. f 1.25 - 2.09 1.95 5.10 0.11 0.29 .� , .., , o x Menagid pervious r ,y r �11.86 2.09 1.42 35.27 0.28 6.95 ' 1Rooded pervious, �,. 2.09 0.94 0.00 0.14 0.00 ' J.`t FArea taken up by BMPAO: 2.09 1.95 0.00 0.11 0.00 io oi,.f` t �rt t�"Pre-RMPT'N t•"`iPre-111% P ' 6racbon lmpervmm(1)= 0.17 ",:a{`A¢7x 4718 (Ib/yr)'= 7.74 a I; Mq. ,£..i"rYV •,,u...r ;' I4<i v.`, eL'oad(lb/yr)„ t�Load "- .v i S,•. � wr }' Pre-BMP,1TN If Pre-BMPTP +�- 0.54 Total lren of Developrent o 14.36 .:"e '-_ ^ - Export 3.29 Eipoet (Ib/adyr) :. o , ,.• (lb/adyr) r�Post-BMPTN °`'`Post BMP TP d '`47.18 Load(lb/yr)- ia,Lin d 7.74 °r :•a .a,,, } .1 < °u! . yr)= 4t q r µ �?ti MM .I � U, � d,b +) " 'i&• J' ��h ru jr Post,BMP'CN fh*Post BM<'sTP 0.54 Fsport 3.29 Export (Ib/ac/yr) (Ib/adyell Catchment 3: Total acreage of catchment 3 = ac = First BMP's TN removal rate = % First BMP's TP remo%val rate Second BMPs TN removal rate = % Second BMPs TP removal rate =� / Third BMPs TN removal rate = % Third BMPs TP removal rate = TOTAL TN REMOVAL RATE = 0 % TOTAL TP REMOVAL RATE = 0 % OCetckment 'AveregesEMC ~; Type of Land Covee.t�`t S.M. Form fi��Columo}� Average EMC Column ! m •sW 4 :'v + $ (=i;? �_'.a . a^4Ac`rcu eN^ 9:IJ � "w1, . m I: is 2 3 4 oLTP In Transportation impervious,'!' .. 2.60 0.19 -'t ' .' ,T.+ i Roof impervious " -0 1.95 0.11 �. v t d C vwy w IC •: � � 2, , f Vi 4 3rea. Managed pervious e(V '� 1.42 0.28 a y ,Wooded pervious{l 0.94 0.14 •p• "Area taken up by BMPi+ ' - 1.95 0.11 - +e . I ruction'Imperviouv(1) J.;' TN '. Pr'e-BMPTN �` �Pro-BMP�TP „ ,t ��R.isi<^i �... - ,,"ad(lb/yr)= C Load(IWyr).= l w„;,w;. vt ;gf+'ea(t';a°;:i i11 s l!•,r 4rp ! oPre-BMP TN "r( Pro-BMG+TP 7 otal Arca'of Development �' 4 � ,yi,.,1i�i p, ,port n,�:•.p,b £,_� Export (Ib/adyr) " Export-(Ib/ec/yr) Post BMP TN 4, Post BMPTP "Lod .Load (Ib%yr)= (Ib/Yr)= P"ie +'•ikui i wi, ;i1 i V�w"":'.,u[` y', g^'?�Q.a + 'F Poi[BMP'fN .... �!r4 Post BMN. TP uark:(451 t9 vm . ? i Export (lb/adyr) Export (Ib/adyr) := + . *+a!E1kd e _. .L_ _ i _ .. .�_ _ _. � �._ _; .� _ _. �Y.��_.� _ __; �.f �. � _.I sue_= �1 � �.,..._� ; i �._ - l.�.; - rr __ _ _ __. _ .. _ 1 � _ _._ ;� _ 1 )!} tt_ 1 1 I 1 1 t 1 j � _ � I 1 1 I� ! � i tr ; 1 1. 1 2 11 � � 1 - � ! �] i 1 ;. - - .. � 1 1� _ _ - . _ , - 1 1 - � � � _ _ - - - � I it rigure IV -do 'Vegetation rot shown d e: Average depth of permanent pool to use in the SAIDA tables (ft) Option 1: de, =y_►oal Fmboard & lmrdened emergencyawrflow '9r.,sL�oor not shown Aaa,A rA,a„ wy+Ab .) r Depth Option 2: ds = 0.25x 1+ lI + x "'S5de slope stabdmod ( A�-� J 2 per PEjudgment Temporarypoo! vegetated' Permanent pool Side slope Outlet above Bottom of vegetated shelf r--►� y Vegetated` I Side slopes temporary pool" Bottom of pond (Sediment Side elopes clean -out top elevation) shed 1-2:1 Outlet orifice Sediment clean -out loft, 10:1 bottom elevation Side slope"' SR Forebay Berm Sediment storage (rain 1 0) S By Depth Distance between bottom of shelf and bottom of pond (excludes sediment) (0) C Ate, ,y,r Surface area at bottom of shelf (includes main pond & forebay(s)) (S2) 0 Ae,,,,y„i. Surface area at permanent pool (includes maw pond & forebay(s)) (fl) Ab,,,M. Surface area at bottom of pond excluding sediment storage (maw pond only) (fP) V,,i Volume of permanent pool (includes main pond & forebay(s), excludes sediment) (W) D AV = VOL PER POOL AREA PER POOL OPT 1 VOL PERM 14036.25 AREA PERM POOL 4520 Area Temp pool 6249 D AV = 3.11 FT USE FOR AVG DEPTH 3 SAIDA = 6 DA = ®7. AC t/ SA = OPT 2 A SOT SHELF 3216 SF A PERM POOL 4520 SF A SOTT POND 1174 SF DAV = 3.64 FT DEPTH OF POND 5 FT �� Hydrograph Report Hydraflow Hydrographs Extension forAutoCAD®Civit 3DO 2009 by Autodesk, Inc. v6.066 Hyd. No. 5 Perdue Wet Pon Hydrograph type = Reservoir Storm frequency = 1 Yrs Time interval = 1 min Inflow hyd. No. = 1 - PURDUE GRAIN PAD Reservoir name = wet pond Storage Indication method used Q (cfs) 7.00 5.00 4.0C 3.0( 2AN 1.0 mug: Perdue Wet Pon Hyd. No. 5 --1 Year D 1 2 3 4 5 0 Hyd No. 5 • Hyd No. 1 Thursday, Jun 2, 2011 Peak discharge = 0.000 cfs Time to peak = n/a Hyd. volume = 0 cuft Max. Elevation = 6.82 ft Max. Storage = 1,749 cuft f 0 a 1v „ _ IIIIIII Total storage used = 1,749 cuft Q (cfs) 7.00 5.00 4.00 3.00 r5 1.00 0.00 Time (min) Pond Report 2 Hydraflow Hydrographs Extension for AutoCADOD Civil 3DO 2009 by Autodesk, Inc. v6.066 Thursday, Jun 2, 2011 Pond No. 2 - wet pond Pond Data Contours - User -defined contour areas. Average end area method used for volume calculation. Begining Elevation = 6.50 ft Stage I Storage Table Stage (ft) Elevation (ft) Contour area (sgft) Incr. Storage (cult) Total storage (cult) 0.00 6.50 4,520 0 0 1.00 7.50 6,249 5,385 5,385 Culvert / Orifice Structures Weir Structures [A] [S] [C] [PrfRsd [A] 94 [C] [01 Rise (in) = 1.50 0.00 0.00 0.00 Crest Len (ft) = 8.00 0.00 0.00 0.00 Span (in) = 1.50 0.00 0.00 0.00 Crest El. (it) = 7.25 0.00 0.00 0.00 No. Barrels = 1 0 0 0 Weir Coats. = 2.60 3.33 3.33 3.33 Invert El. (ft) = 6.50 0.00 0.00 0.00 Weir Type = Broad - - - Lsngth (ft) = 1.00 0.00 0.00 0.00 Multistage = Yea No No No Slope (%) = 0.10 0.00 0.00 n/a N-Value = .013 .013 .013 n/a Orifice Coelt. = 0.60 0.60 0.60 0.60 Exfll.(IFVhr) = 0.000 (by Wet area) Multistage = n/a No No No TW Elev. (ft) = 0.00 No Cukwrrordiu allb a ra s+Nndu dW i Og (c) &,d o" (ac) merm arirwe mMnim (e) and submWg ce 18). Stage I Storage I Discharge Table Stage Storage Elevation Clv A Civ B Clv C PrfRsr Wr A Wr B Wr C Wr D Exfil User Total It cult ft cis CIS cis eis ofs cis cis CIS CIS CIS efs 0.00 0 6.50 0.00 - - - 0.00 - - - - - 0.000 1.00 5,385 7.50 0.06 is - - - 0.00 - - - - - 0.057 Hydrograph Report HydraOow Hydrographs Extension for AutoCAD® Civil 3DO 2009 by Autodesk, Inc, v6.066 Thursday, Jun 2, 2011 Hyd. No. 6 Swale and pond Hydrograph type = Reservoir Peak discharge = 0.000 GIs Storm frequency = 1 yrs Time to peak = n/a Time interval = 1 min Hyd. volume = 0 cult Inflow hyd. No. = 2 - SWALE Max. Elevation = 6.84 ft Reservoir name = wet pond Max. Storage = 1,804 cuft Storage Indication method used. Q (cfs) 7.00 6.00 5.00 4.00 3.00 2.00 1.0C n nr 0 2 Hyd No. 6 Swale and pond Hyd. No. 6 — 1 Year 4 6 8 Hyd No. 2 10 12 14 16 1111111 Total storage used = 1,804 cult Q (cfs) 7.00 6.00 5.00 4.00 3.00 2.00 1.00 ly 18 Time (min) Pond Report a Hydrafiow Hydrographs Extension for AutoCADS Civil 3138 2009 by Autodesk, Inc. v6.066 Thursday, Jun 2, 2011 Pond No. 2 - wet pond Pond Data Contours - User -defined contour areas. Average end area method used for volume calculation. Begining Elevation = 6.50 it Stage / Storage Table Stage (ft) Elevation (ft) Contour area (sqft) Incr. Storage (tuft) Total storage (tuft) 0.00 6.50 4,520 0 0 1.00 7.50 6,249 5,385 5,385 Culvert / Orifice Structures Weir Structures [A] [B] [C] [PrfRSr] [A] [B] [C] [D] Rise (in) = 1.50 0.00 0.00 0.00 Crest Len (ft) = 8.00 0.00 0.00 0.00 Span (in) = 1.50 0.00 0.00 0.00 Crest El. (ft) = 7.25 0.00 0.00 0.00 No. Barrels = 1 0 0 0 Weir Coeff. = 2.60 3.33 3.33 3.33 Invert El. (ft) = 6.50 0.00 0.00 0.00 Weir Type = Broad - - - Length(ft) = 1.00 0.00 0.00 0.00 Multistage =,Yes No No No Slope (%) = 0.10 0.00 0.00 n/a N-Value = .013 .013 .013 n/a Orifice Coeff. = 0.60 0.60 0.60 0.60 Exfll.(inlhr) = 0.000 (by Wet area) Multistage = Na No No No TW Elev. (ft) = 0.00 Note: CulwNonfiw cLd lows ere anelyr u inlet (K) and WIM log) m . War users wed roc Docks mrdilians (ic) and subrrwq rre (s). Stage / Storage / Discharge Table Stage Storage Elevation Chi A Clv B Clv C Pr Rsr Wr A Wr B Wr C Wr D Exfil User Total ft tuft ft cis cis cfs as cfs cis cis cis cfs cis cis 0.00 0 6.50 0.00 - - - 0.00 - - - - - 0.000 1.00 5,385 7.50 0.06 is - - - 0.00 - - - - - 0.057 - til-•!I; tq ert" A;V inn` 7V, >i Vi .pf .nil 3v . Weir Report Hydrallow Express Extension for AutoCAD® Civil 3D® 2009 by Autodesk, Inc. Overflow Rectangular Weir Crest = Broad Bottom Length (ft) = 8.00 Total Depth (ft) = 0.50 Calculations Weir Coeff. Cw = 2.60 Compute by: Known Q Known Q (cfs) = 7.17 Depth (ft) 1.00 0.50 -0.50 Overflow Highlighted Depth (ft) Q (cfs) Area (sqft) Velocity (ft/s) Top Width (ft) Thursday, Jun 2 2011 = 0.49 = 7.170 = 3.93 = 1.82 = 8.00 Depth (ft) i.0o 0.50 1 11 -0.50 Weir W.S. Length (ft)