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HomeMy WebLinkAboutSW8120404_COMPLIANCE_20120802STORMWATER DIVISION CODING SHEET POST -CONSTRUCTION PERMITS PERMIT NO. SW�%� DOC TYPE ❑ CURRENT PERMIT ❑ APPROVED PLANS ❑ HISTORICAL FILE COMPLIANCE EVALUATION INSPECTION DOC DATE _F WYYMMDD Permit Number SW8120404 Program Category State SW Permit Type State Stormwater Primary Reviewer steven.pusey Coastal SW Rule Coastal Stormwater - 2008 Permitted Flow Facilit Central Files: AP5 SWP 08/02/12 Permit Tracking Slip Status Project Type Active New Project Version Permit Classification 1.00 Individual Permit Contact Affiliation Facility Name Major/Minor Region Parker Ventures Minor Wilmington Location Address County 5411 Castle Hayne Rd New Hanover Castle Hayne NC 28429 Facility Contact Affiliation Owner Owner Name Owner Type Castle Plaza Development LLC Non -Government Owner Affiliation Betty Hudson Manager Member PO Box 397 Dates/Events Castle Hayne NC 28429 Scheduled Orig Issue App Received Draft Initiated Issuance Public Notice Issue Effective Expiration 08/02/12 04/05/12 08/02/12 08/02/12 08/02/20 Regulated Activities Requested/Received Events State Stormwater - HD - Infiltration Deed restriction requested Deed restriction received Additional information requested 05/10/12 Additional information received 06/19/12 Additional information requested 07/10/12 Additional information received 07/30/12 Outfall NULL Waterbody Name Stream Index Number Current Class Subbasin Sw w Permit No. 1 LO 110 N (to be provided by OWQ) oti warEq A,*'A* NCDENR STORMWATER MANAGEMENT PERMIT APPLICATION FORM a 401 CERTIFICATION APPLICATION FORM INFILTRATION TRENCH SUPPLEMENT This form must be filled out, printed and submitted. The Required Items Checklist (Part 111) must be printed, filled out and submitted along with all of the required information. Project name Parker Ventures Contact person Phillip Tripp, P.E:. Phone number .910.763-5100 E Date ;711612012 Drainage area number 11 IIgDESIGWINEORMATION Site Characteristics Drainage area 97,385.00 n2 Impervious area 1 75,639.00 n2 Percent impervious 77.7% % Design rainfall depth 1.50 ,in Peak Flow Calculations 1-yr, 24-hr rainfall depth 3.88 Jn 1 -yr, 24-hr intensity 4.87 'inmr Pre -development 1-yr, 24-hr discharge 5.02 'ft'Isec Post -development 1-yr, 24-hr discharge 1.78 .fi3isec PretPost 1-yr, 24-hr peak flow control -3.24 ff'isec Storage Volume: Non -SA Waters Minimum volume required ; 9.139.60 ;n3 Volume provided 44,699.00 in3 OK for non -SR waters Storage Volume: SA Waters _ 1.5" runoff volume [n3 Pre -development 1-yr, 24-hr runoff volume fi3 Post -development 1-yr, 24-hr runoff volume fi' Minimum volume required n3 Volume provided in3 Soils Report Summary Soil type Sands Infiltration rate 1.23 Jnlhr SHWT elevation 14,17 fmsl Trench Design Parameters Drawdown time 2,30 'days OK Perforated pipe diameter 0,00 .in �� � ��� Perforated pipe length 0.00 Ift Number of laterals NIA Stone type (if used) I NIAI JUL 3 0 2011 Stone void ratio ' 95% Stone is free of Tines? Y ; (Y or N) OK BY. Form SW401-Infiltration Trench-Rev.4 Parts r. & Il. Design Summery, Page 1 of 2 Permit No. -e i 2 Q y 014 (to be provided by D WQ) Trench Elevations Bottom elevation i 16.20 lfmsl OK Storage/overflow elevation 18.90 fmsl Top elevation 19.10 fmsl Trench Dimensions Length (long dimension) 141.75 Ift Width (short dimension) 115.25 it Height (depth) 2.89 ft OK Additional Information Maximum volume to each inlet into the trench? 2.00 ac-in OK Length of vegetative filter for overflow NIA `ft OK Number of observation wells 1 1 OK Distance to structure 30.00 i ft OK Distance from surface waters I 100+ ;ft OK Distance from water supply well(s) 100+ tft OK Separation from impervious soil layer NIA !ft OK Depth of naturally occuring soil above SHWT i 2:00 ift OK Bottom covered with 4-in of clean sand? i Y '(Y or N) OK Proposed drainage easement provided? Y (Y or N) OK Capures all runoff at ultimate build -out? Y `(Y or N) OK Bypass provided for larger storms? Y (Y or N) OK Trench wrapped with geotextile fabric? Y (Y or N) OK Pretreatment device provided Drop Inlets _ SCOVE JUL 3 0 2012 dw Form 5W401-tnri1tration Trench-Rev.4 Parts !. & II. Design Summary, Page 2 of 2 s Permit Number: sli�/(J � W!0� (to be provided by DWQ) Drainage Area Number: Infiltration Trench Operation and Maintenance Agreement I will keep a maintenance record on this BMP. This maintenance record will be kept in a log in a known set location. Any deficient BMP elements noted in the inspection will be corrected, repaired or replaced immediately. These deficiencies can affect the integrity of structures, safety of the public, and the removal efficiency of the BMP. Important maintenance procedures: — The drainage area of the infiltration trench will be carefully managed to reduce the sediment load to the sand filter. — The water Ievel in the monitoring wells will be recorded once a month and after every storm event greater than 1.0 inches (or 1.5 inches if in a Coastal County). The infiltration trench will be inspected once a quarter and within 24 hours after every storm event greater than 1.0 inches (or 1.5 inches if in a Coastal County). Records of operation and maintenance will be kept in a known set location and will be available upon request. Inspection activities shall be performed as follows. Any problems that are found shall be repaired immediately. BMP element: Potential roblem: How I will remediate theproblem; The entire BMP Trash/debris is present. Remove the trash debris. The grass filter strip or Areas of bare soil and/or Regrade the soil if necessary to other pretreatment area erosive gullies have formed. remove the gully, and then plant a ground cover and water until it is established. Provide lime and a one-time fertilizer application. Sediment has accumulated to Search for the source of the a depth of greater than six sediment and remedy the problem if inches. possible. Remove the sediment and dispose of it in a location where it will not cause impacts to streams or the BMP. The flow diversion The structure is clogged. Unclog the conveyance and dispose structure (if applicable) of any sediment off -site. The structure is damaged. Make any necessary repairs or replace if damage is too large for repair, CEI E' MAR 2 8 2012 BY: Form SW401-Infiltration Trench O&M-Rev.3 Page I of 3 BMP element: Potentialproblem: How I will remediate theproblem: The trench Water is ponding on the Remove the accumulated sediment surface for more than 24 from the infiltration system and hours after a storm. dispose in a location that will not im act a stream or the BMP. The depth in the trench is Remove the accumulated sediment reduced to 75% of the original from the infiltration system and design depth. dispose in a location that will not impact a stream or the BMP. Grass or other plants are Remove the plants, preferably by growing on the surface of the hand. If pesticide is used, wipe it on trench, the plants rather than spraying. The observation well(s) The water table is within one Contact the DWQ Stormwater Unit foot of the bottom of the immediately at 919-733-5083. system for a period of three consecutive months. The outflow pipe is clogged. Provide additional erosion protection such as reinforced turf matting or riprap if needed to prevent future erosion problems. The outflow pipe is damaged. Repair or replace the pipe. The emergency overflow Erosion or other signs of The emergency overflow berm will berm damage have occurred at the be repaired or replaced if beyond outlet. re air. The receiving water Erosion or other signs of Contact the NC Division of Water damage have occurred at the Quality 401 Oversight Unit at 919- outlet. 733-1786. 10"ECEIVE, MAR 2 8 2012 Form SW401-Infiltration Trench O&M-Rev.3 Page 2 of 3 Permit Number: (to be provided by DWQ) I acknowledge and agree by my signature below that I am responsible for the performance of the maintenance procedures listed above. I agree to notify DWQ of any problems with the system or prior to any changes to the system or responsible party. Project name:Parker Ventures BMP drainage area number: I Print name:Joseph L. Hudson_ Title:Member Manager, Castle Plaza Development, LLC Address: 1009_Waterview Place, Carolina Beach, NC 28428 Phone: 910-520-6878 Signature: Date: Note: The legally responsible party should not be a homeowners association unless more than 50% of the lots have been sold and a resident of the subdivision has been named the president. I, _1�1 Ic1.���_ i'��r1 , a Notary Public for the State of , County of , do hereby certify that personally appeared before me this 1 b day of , Z , , ` - Z. , and acknowledge the due execution of the forgoing infiltration trench maintenance requirements. Witness my hand and official seal, C. `r10 T.4 .O =`2 p03 LIGCOU !!!!!lfrio itO SEAL My commission expires_ 1 O - [ 5 -ilk �CCCt C f E. EP Vk_;. MAR 2 8 2012 8)':—_ Form SW40I-infiltration Trench O&M-Rev.3 Page 3 of 3 INFILTRATION CHAMBER ANALYSIS Filename S:IWQSIStormwater\Permits & Projects120121120404 HD12012 07 Excel—IT-2 120404 Initial Run Date: July 10, 2012 Project # SW8 1120404 see note#1 Last Modified 10-Jul-12 Project Name Parker Ventures I Reviewer L. Lewis Phase 11? Y 1 N L Recvng Stream Drainage Basin Classification Index Number Buildings Street & Parking Concrete Offsite Future Total BUA Drainage Area Drainage Area % Impervious Cc Design Storm Rv pre Rv Post 1 yr 24 hr pre 1 yr 24 hr post Volume req'd. Model # Vol./Chamber cf. No. of chambers Chamber vol. Length of Trench Width Of Trench Surface Area Height Of Trench Trench Volume Total Volume Bottom Elev. SHWT Elev. Min. Weir Elev. Infiltration Rate Drawdown Time DA1 DA2 DA3 DA4 DA5 DA6 Prince George Creek CPF C Sw 18-74-63 00000 97385 2.24 0.00 0.00 0.00 0.00 0.00 77.7% #DIVIO! #DIV/O! #DIVIO! #DIV/O! #DIVIO! 0.71 #DIVIO! #DIVIO! #DIVIO! #DIVIO! #DIVIO! 1.50 0.05 0.75 #DIV/O! #DIVIO! #DIVIO! #DIVIO! #DIV/O! NIA 0 0 0 0 0 NIA #DIVIO! #DIVIO! #DIVIO! #DIV/0! #DIVIO! 9118 #DIVIO! I #DIV101 #DIV/O! I #DIVIO! I #DIVIO! DA 1 DA 2 DA 3 DA 4 DA 5 DA 6 11 I ----- 00 00 0000� ` 00�00 1.23 5.45 1 #DIVIO! I #DIVIO! #DIVIO! I #DIVIO! I #DIVIO! 10 yr-24 hr analvsis 1 0.98 0.95 sq, ft, sf acres in cf cf cf ECO I See Note See Note cf ft ft See Nete ft cf fmsl fmsl fmsl in hr h rs Rd 10 yr 24 hr 7.22 inches,l Volume, cf 43688 cf Volume 124 hours 20086 cf Volume to store = 23802 cf Note- the total available volume must be larger than the remaining volume to store. Note #1 - the project number needs a single quote mark entered first so that the "0" shows up in the number. Note #2 - either the volume per chamber or the volume per linear foot of chamber can be enetered here. Note #3 - either the number of chambers or the linear feet of chamber can be entered here. Note #4 - If the trench widths and lengths are irregular, the reviewer may enter surface area directly. Comments: Required volume, storage, and drawdown guidelines are met. Job No. 10013 Date: 07/27/12 TRIPP ENGINEERING, P.C. 419 Chestnut Street, Wilmington, NC 28401 REC�� , (�� 1 Phone: (910) 763-5100 • FAX: (910) 763-5631 Email: trippeng@ec.rr.com LETTER OF TRANSMITTAL To: NCDENR Attention: Steve Pusey Subject: Parker Ventures FAX TRANSMITTAL: NUMBER OF PAGES INCLUDES COVER I am sending you: ( X ) ATTACHED ( ) UNDER SEPARATE COVER ( ) Prints ( ) Tracings ( ) Copy of letter ( ) Specifications ( X ) Other Conies Item No. _ Description 1 set Calculations 1 Infiltration Trench Supplement__ JUL 302012 BY: These are transmitted as checked below: ( X ) For Approval ( ) For Your Use ( ) Sign & Return ( X ) Review Remarks: -Infiltration Trench SuDr)lement. Includes the revised 44.699 cf -Infiltration Basin Storacie Volume Calcs. Includes the revised 8.25 cf per tank and the volume of 4414699 cf _ -Infiltration Trench Routing 10 Year „Storm with Half Infiltration Rate. Includes page six that shows the time period until full drawdown using half the infiltration rate. cc: Signed: Lee Galloway Revised: 7/16/12 Parker Ventures ALG Simple Method - 1.5" Storage Volume Calculations Infiltration Trench Infiltration Basin - Storaae Volume - Non SA Waters - Minimum Volume Reauired Volume of Runoff = V = (3630) (Design Rainfall Depth) (Rv) (Drainage Area) where Rv = 0.05+0.009(IA) Rv = Runoff Coefficient = storm runoff (inches) / storm rainfall (inches) lA = Impervious Fraction = Impervious portion of the drainage area (acres) / Drainage area (acres) IA= 77.7 % Rv = 0.75 Design Rainfall Depth = 1.50 in. Drainage Area = 2.24 acres Volume Required = 9,139 ft3 Volume Provided = 44,699 ft3 (Includes 95% Void) tes for Vol. Provided: 5,418 Double Rain Tank Units Proposed Each Rain Tank Unit provides approximately 8.25 cf of water storage J#: 10013 j�ECE1VED JUL 3 0 2012 BY: G:�JOBS\2010\10013-PARKER VENTURES\calcs\10013 Infiltration Basin Storage Volume Calcs 1.5inch 7-16-12 } Revised: 6/18112 ALG WATERSHED DATA BEFORE DEVELOPMENT WATERSHED AREA 2.24 ACRES HYDRAULIC LENGTH 250 FT CHANGE IN HEIGHT 1 FT RUNOFFCOEF.'C' 0.1 TIME OF CONCENTR 5.00 MIN INTENSITY 10 YR 7.00 INIHR Qa a 1.67 CFS Qa = PRE -DEVELOPED PEAK DISCHARGE COMPUTE DEPTH OF RUNOFF P = 7.23 INCHES 10yr, 24hr PRECIPITATION CN = 85 S = (10001CN}10 S = 1.76 Depth (D) = (P-0.2S)A2/(P+O.BS) D = 5.47 IN - 10yr, 24hr RUNOFF DEPTH SET VOLUME AND COMPUTE TIME TO PEAK Tp = [(43.5)(D)(Area)] I Op Tp= 44,75 MINUTES Storage Volume Req'd = (Qp-Qa)'Tp"1.39'60 38,622 cu. It, CALCULATE Ka AND b SET NORMAL ELEVATION AT = 16.20 feet Parker Ventures Stormwater Infiltration Trench Routing 10-year 24hr Storm HALF INFILTRATION RATE AFTER DEVELOPMENT WATERSHED AREA 2.24 ACRES HYDRAULIC LENGTH 250 FT CHANGE IN HEIGHT 1 FT RUNOFF COEF.'C' 0.76 TIME OF CONCENTR 5.00 MIN INTENSITY 10 YR 7.00 IN/HR QP a 11.92 CFS QP = POST -DEVELOPED PEAK DISCHARGE 5 Z CONTOUR INCR ACCUM CONTOUR AREA VOL VOL STAGE In S In Z Z eat (sq ft) (cu ft) (cu ft) _ (ft) (ft) 16.20 15518 0 0 0 0 0 0 17.00 15518 12.414 12,414 0.8 9.4266 -0.2231 0.60 17.50 15518 7.759 20,173 1.3 9.9121 0.2624 1.30 19.10 15518 24.829 45.002 2.9 10.7145 1,0647 2.90 'NOTE: Contour Area includes 95% Vo(d Ratio for Eco Rain Tanks, Regression Output: =� Ks = 16518 b = 1.00 X Coefficient 9.65 RECEIVE JUL 3 o 2012 p BY:- 10013 G:UOBS12010110013-PARKER VENTURES%calcs110013 tnfiltrafian Trench Rautnp 10y24hr- Half Inflt Rate (DEN R) 0-IB-12 Revised: 6/18112 Parker Ventures ALG Stormwater Infiltration Trench Routing 10-year 24hr Storm HALF INFILTRATION RATE CHAINSAW METHOD FOR RISER BARREL ROUTING STORM DATA Qa = 1.57 ds Qp = 11.92 cfs ' HALF 1nffltrattort rate - 0.62 1n/hr Tp = 44.7 min (Per Soils Report) dT = 1 min BASIN DATA Basin Drawdown Time - 55.fi hours Ks = 15518 (see Page 6 this report) b = 1.00 Zo = 16.20 ft Normal water elev = 16.20 ft Peak Outflow = 0.00 cfs Box Weir Length = 0 it Peak Stage = 18,88 ft Cw = 0.0 Maximum Storage = 41,659 cu it Zcr = 0.00 ft Control Holes: State Orifice: Dia = 0.00 in Dd = 18 in Inv = 0.00 ft Cd = 0.59 Weir: L = 48 in Zi = 16.50 tt Inv = 18.9 ft Time inflow Storage Stage Outflow W Riser Orifice Weir IFStore Infiltrate min) (cfs) (cu ft ft) (cfs) (ds ds) (Cfs) (cu fi 0 0.0 0 16.20 0 0 4 0.00 0.0 0.0 1 0.0 0 16.20 0 0.00 0 0.00 0.0 13.4 2 0.1 1 16.20 0.00 0.00 0.00 0.00 0.0 26.7 3 0,1 4 16.20 0.00 0.00 0.00 0.00 0.0 40.1 4 0.2 12 16,20 0.00 0.00 0.00 0.00 0.0 53.5 5 0.4 26 16.20 0.00 0.00 0.00 D.OD 0.0 66.8 6 0.5 48 16.20 0.00 0.00 0.00 0.00 0.0 80.2 7 0.7 79 16.20 0.00 0.00 0.00 0.00 0.0 93.5 8 0.9 122 16.20 0.00 0.00 0.00 0.00 14,8 106.9 9 1.2 177 16.20 0.00 0,00 0.00 0.00 56.3 12133 10 1.4 246 16.21 0.00 0.00 0.00 0.00 112.0 133.E 11 1.7 330 16.21 0.00 0.00 0.00 0.00 i83.2 147.0 12 2,0 432 16.22 0.00 0.00 0.00 0.00 271.2 160A 13 2.3 $51 16.22 0.00 0.00 0.00 0.00 377.4 173.7 14 2.7 690 16.23 0.00 0.00 0.00 0.00 502.9 187A 15 3.0 849 16,24 0.00 0.00 0.00 0.00 648.7 200.4 16 3.4 1030 16.25 0,00 0.00 0.00 0.00 815.9 213.8 17 3.8 1233 16.26 0.00 0,00 0.00 0.00 1005.4 227.2 18 4,2 1458 16.28 0.00 0,00 0.00 0.00 1217.8 240.5 19 4.6 1708 16.29 0.00 0.00 0.00 0.00 1453.9 253.9 20 5.0 1981 16.31 0,00 0.00 0.00 0.00 1714.1 267.3 21 5.4 2280 16.33 0.00 0,00 0.00 0.00 1998.9 280.6 22 5,8 2603 16.35 0.00 0,00 0.00 0.00 2308.6 294,0 23 6.2 2951 16,37 0.00 0.00 0.00 0,00 2643.4 307.3 24 6.6 3324 16.39 0,00 0.00 0.00 0.00 3003.2 320.7 25 7.1 3722 16.42 0.00 0.00 0.00 0.00 3388.1 334.1 26 7.5 4145 16,44 0.00 0.00 0.00 0.00 3797.7 347,4 27 7.9 4593 16.47 0.00 0.00 0.00 0.00 4231.9 360.8 28 8.3 5064 16.50 0.00 0.00 0.00 0.00 4690.1 374.2 29 8.6 5559 16.53 0.00 0,00 0.00 0.00 5171.8 387.5 30 9.0 6077 16.57 0.00 0.00 0.00 0.00 5676.3 400.9 31 9.4 6617 16.60 0.00 0.00 0.00 0.00 6202.8 414.2 32 9.7 7178 16.64 0.00 0,00 0.00 0.00 67%5 427,6 33 10.0 7759 16.67 0.00 0.00 0.00 0.00 7318.2 441.0 34 10.3 8359 16.71 0.00 0.00 0.00 0.00 7905.0 454.3 35 10.6 8977 16.75 0.00 0,00 0.00 0.00 8509.6 467,7 36 10.6 9612 16.79 0.00 0.00 0.00 0.00 9130.7 481 A 37 11.1 10261 16.83 0.00 0.00 0.00 0.00 9767.0 494.4 38 11.3 10925 16.87 0.00 0,00 0.00 0.00 10417.1 507,8 39 11.4 11600 16.91 0.00 0.00 0.00 0.00 11079.3 521.1 40 11_6 12287 16.96 0.00 0.00 0.00 0.00 11752.3 534.5 41 11.7 12982 17.00 0.00 0.00 0.00 0.00 12434.2 547.9 42 11.8 13685 17.05 0.00 0,00 0.00 0.00 13123.6 561.2 43 11.9 14393 17.09 0.00 0,00 0.00 0.00 13818.6 574.6 44 11.9 15105 17.14 0.00 0.00 0.00 0.00 14517.5 588.0 45 11.9 15820 17.18 0.00 0.00 0.00 0.00 15218.7 601.3 46 11.9 16535 17.23 0.00 0.00 0.00 0.00 15920.3 614.7 47 11.8 17249 17.27 0.00 0.00 0.00 0.00 16620.5 626.0 G:V08S@01011001 YPARKER VENTURES14aIC$110013 Infitratmn Trench Routing t0yr24hf - Half InfRt Rate (DENR) 9-18-t2 10013 Revised: 6118/12 Parker Ventures 10013 ALG Starmwater Infiltration Trench Routing 10-year 24hr Storm HALF INFILTRATION RATE 48 11.8 17959 17.32 0.00 0.00 0.00 0.00 17317.7 641.4 49 11.7 18665 17.36 0.00 0.00 0.00 0.00 18010,1 654.8 50 11.5 19364 17.40 0.00 0,00 0.00 0.00 18695.9 668.1 51 11.4 20055 17.45 0.00 0.00 0.00 0.00 19373.6 681.5 52 11.2 20736 17,49 0.00 0.00 0.00 0.00 20041.3 694.9 53 10.9 21406 17.53 0.00 0.00 0.00 0.00 20697.6 708.2 54 10.7 22063 17.58 0.00 0.00 0.00 0.00 21341-0 721.6 55 10.4 22705 17.62 0.00 0.00 0.00 0.00 21969.8 734.9 56 10.2 23331 17,66 0.00 0.00 0.00 0.00 22582.8 748.3 57 9.9 23941 17,69 0.00 0.00 0.00 0.00 23179.3 761.7 58 9.6 24533 17.73 0.00 0.00 0.00 0.00 23758.4 775.0 59 9.3 25109 17.77 0.00 0.00 0.00 0.00 24320.5 788,4 60 9.0 25668 17.80 0.00 0.00 0.00 0.00 24866.2 801.8 61 8.8 26211 17,84 0.00 0.00 0.00 0.00 25395.8 815.1 62 8.5 26738 17.87 0.00 0.00 0.00 0.00 25909-9 828.5 63 8.3 27251 17.90 0.00 0.00 0.00 0.00 26408.9 841.9 64 8.1 27748 17.93 0.00 0.00 0.00 0.00 26893.2 855.2 65 7.8 28232 17.96 0.00 0.00 0.00 0.00 27363.3 868.6 66 7.6 28701 17,99 0.00 0.00 0.00 0.00 27819.5 881.9 67 7.4 29158 18.02 0.00 0.00 0.00 0.00 28262,2 895.3 6B 7.2 29601 18.05 0,00 0.00 0.00 0.00 28692.0 908.7 69 7.0 30031 18.08 0.00 0.00 0,00 0.00 29109.0 922.0 70 6.8 30449 18.10 0.00 0.00 0.00 0,00 29513.7 935.4 71 6.6 30855 18.13 0.00 0.00 0.00 0.00 29906.4 948.8 72 6.4 31250 18.15 0.00 0.00 0.00 0.00 30287.5 962.1 73 6.2 31633 18.18 0.00 0.00 0.00 0.00 30657.3 975.5 74 6.0 32005 18.20 0.00 0.00 0.00 0.00 31016.2 988.8 75 5.9 32367 18.22 0.00 0.00 0,00 0.00 31364.4 1002.2 76 5.7 32718 18,24 0.00 0.00 0.00 0.00 31702.2 1015.6 77 5.5 33059 18.26 0.00 0.00 0.00 0.00 32030.0 1028.9 78 5.4 33390 18,28 0.00 0.00 0.00 0.00 32348.0 1042.3 79 5.2 33712 18,30 0.00 0.00 0.00 0.00 32656,5 1055.7 80 5.1 34025 18.32 0.00 0.00 0.00 0.00 32955.8 1069.0 81 4,9 34329 18.34 0.00 0.00 0.00 0.00 33246.1 1082.4 82 4,8 34624 18.36 0.00 0.00 D.00 0.00 33527.8 1095.7 83 4.6 34910 18,38 0.00 0.00 0.00 0.00 33801.0 1109.1 84 4.5 35188 18.40 0.00 0.00 0.00 0.00 34066.0 1122.5 85 4.4 35459 18.41 0.00 0.00 0.00 0.00 34323.0 1135.8 86 4.3 35722 18.43 0.00 0.00 0.00 0.00 34572.3 1149.2 87 4.1 35977 18A4 0,00 0.00 0.00 0.00 34814.1 1162.6 88 4.0 36224 18.46 0.00 0,00 0,00 0.00 35048.6 1175.9 89 3.9 36465 18.47 0.00 0.00 0.00 0.00 35275.9 1189.3 90 3.8 36699 18,49 0.00 0.00 0.00 0.00 35496.4 1202.6 91 3.7 36926 18.50 0.00 0.00 0.00 0.00 35710.2 1216.0 92 3.6 37147 18.51 0.00 0.00 0.00 0.00 35917.4 1229.4 93 3.5 37361 18.53 0.00 0.00 OM 0.00 36118.4 1242.7 94 3.4 37569 18.54 0.00 0.00 0.00 0.00 36313.2 1256.1 95 3.3 37772 18.55 0.00 0.00 0.00 0.00 36502.1 1269.5 96 3.2 37968 18.56 0.00 0.00 O.OD 0,00 36685.1 1282.8 97 3.1 38159 18.58 0.00 0.00 0.00 0.00 36862.6 1296,2 98 3.0 38344 18.59 0.00 0.00 0.00 0.00 37034.6 1309.5 99 2.9 36524 18.60 0.00 0.00 0.00 0.00 37201,2 1322.9 100 2.8 38699 18.61 0.90 0.00 0.00 0.00 37362.8 1336.3 101 2.8 38869 18.62 0.00 0.00 MCI 0.00 37519.3 1349.6 102 2.7 39034 18.63 0.00 0.00 0.00 0.00 37670.9 1363.0 103 2.6 39194 18.64 0.00 0.00 0.00 0.00 37817.8 1376.4 104 2.5 39350 18.65 0.00 0.00 0 00 0.00 37960.2 1389.7 105 2.4 39501 18.66 0.00 0.00 0.00 0.00 38098.1 1403A 106 2.4 39648 18,66 0.00 0.00 0.00 0,00 38231.6 1416.4 107 2.3 39791 18.67 0,00 0.00 0.00 0.00 38360.9 1429.8 108 2.2 39929 18.68 0.00 0.00 0.00 0.00 38466.2 1443.2 109 2.2 40064 18.69 0.00 0.00 0.00 0.00 38607.5 1456.5 110 2A 40195 18.70 0.00 0.00 0.00 0.00 38724.9 1469.9 111 2.1 40322 18.70 0,00 0.00 0.00 0.00 38838.6 1483.3 112 2.0 40445 18.71 0,00 0.00 0.00 0.00 38948.6 1496.6 113 1.9 40565 18.72 0.00 0.00 0.00 0.00 39055.1 1510,0 114 1.9 40682 18.72 0.00 0.00 0.00 0.00 39158.2 1523.4 115 1.8 40795 18.73 0,00 0.00 0.00 D.00 39258.0 1536.7 116 1.8 40905 18.74 0.00 0.00 0.00 0.00 39354,5 1550.1 117 1.7 41011 18.74 0.00 0.00 0.00 0.00 39447.8 1563.4 118 11 41115 18.75 0,00 0.00 0.00 DAD 39538.1 1576.8 119 1.6 41216 18.75 0.00 0.00 0.00 0.00 39625.5 1590.2 120 1.6 41313 18.76 0.00 0.00 0.00 0.00 39709.9 1603.5 121 1.5 41408 18.76 0.00 0.00 0.00 0,00 39791.6 1616.9 122 1.5 41501 18.77 0.00 0.00 0.00 0.00 39870.5 1630,3 123 1.5 41590 18,77 0.00 0.00 0.00 0.00 39946.8 1643.6 124 1.4 41677 18.78 0.00 0.00 0.00 0.00 40020.5 1657.0 125 1.4 41762 18.78 0.00 0.00 0.00 0.00 40091,7 1670.3 GlZBS1201 01100131PARKER VEN1J45$Acalrs1100131eAJAian Trench R&9910y24hr- Half IrRIPAte (DENR) 6-19-PA 0.00 40160,6 1883.7 Revised: 6/18112 Parker Ventures 10013 ALG Stormwater Infiltration Trench Routing 10-year 24hr Storm HALF fNFILTRATION RATE 127 1.3 41924 18.79 0.00 0.00 0.00 0.00 40227.0 1697.1 128 1.3 42002 18.80 0.00 0.00 0.00 0,00 40291.2 1710.4 129 1.2 42077 18.00 0.00 0.00 0.00 0.00 40353.1 1723.8 130 1,2 42150 18.80 0.00 0.00 0.00 0.00 40412.9 1737,2 131 1.2 42221 18.81 0.00 0.00 0,00 0,00 40470.6 1750.5 132 1 A 42290 18.81 0.00 0.00 0.00 0.00 40526.3 1763.9 133 1.1 42357 18.82 0,00 0.00 0.00 0.00 40580.0 1777,2 134 1.1 42422 18.82 0.00 0.00 0.00 0.00 40631.7 1790.6 135 10 42486 18.82 0.00 0.00 0,00 0.00 40681.6 1804.0 136 1.0 42547 18.82 0.00 0.00 0.00 0.00 40729.7 1817.3 137 1.0 42607 18.83 0.00 0.00 0.00 0.00 40776.1 1830.7 138 0.9 42665 18.83 0.00 0.00 0.00 0.00 40820.7 1844.1 139 0.9 42721 18.83 0.00 0.00 0.00 0.00 40863,E 1857.4 140 0.9 42776 18.84 0.00 0.00 0.00 0.00 40905.0 1870.8 141 0.9 42829 18.84 0.00 0.00 0.00 0.00 40944.8 1884.1 142 0.8 42881 18.84 0.00 0.00 0.00 0.00 40983.0 1897.5 143 0.8 42931 18.84 0.00 0.00 0,00 0.00 41019.8 1910.9 144 0.8 42979 18,86 0.00 0.00 0,00 0.00 41055.2 1924.2 145 0.8 43027 18,85 0.00 0.00 0.00 0.00 41089.1 1937.6 146 0.7 43073 18.85 0,00 0.00 OM 0.00 41121.7 1951.0 147 0.7 43117 18.85 0.00 0.00 0,00 0.00 41153.0 1964.3 148 0.7 43161 18,85 0.00 0.00 0.00 0.00 41183.0 1977.7 149 0.7 43203 18.86 0.00 0.00 0.00 0.00 41211,7 1991.0 150 0.7 43244 18.86 0.00 0.00 0.00 0.00 41239.3 2004.4 151 0.6 43283 18.86 0.00 0.00 0,00 0.00 41265.7 2017.8 152 0.6 43322 18,86 0.00 0.00 0.00 0.00 41290.9 2031.1 153 0.6 43360 18.86 0.00 0.00 0.00 0.00 41315.1 2044.5 154 0.6 43396 18.86 0.00 0.00 0.00 0.00 41338.1 2057.9 155 0.6 43431 18.87 0.00 0.00 0,00 0.00 41360.2 2071.2 156 0.6 43466 18,87 0.00 0.00 0.00 0.00 41381.2 2084.6 157 0.5 43499 18,87 0,00 0.00 OM 0.00 41401.2 2097.9 158 0.5 43532 18.87 0.00 0.00 0.00 0.00 41420.3 2111.3 159 0.5 43563 18.87 0.00 0.00 0,00 0.00 41438.4 2124.7 160 0.5 43594 18.B7 0.00 0.00 0.00 0.00 41455.6 2138.0 161 0.5 43623 18,87 0.00 0.00 0.00 0.00 41472.0 2151.4 162 0.5 43652 18.87 0.00 0.00 0,00 0.00 41467.5 2164.8 163 0.5 43680 18.87 0.00 0.00 0.00 0,00 41502.2 2178.1 164 0.4 43708 18.88 0.00 0.00 0.00 0.00 41516.1 2191.5 165 0.4 43734 18.88 0.00 0.00 0,00 0.00 41529.2 2204.8 166 0.4 43760 18.88 0.00 0.00 0.00 0,00 41541,5 2218.2 167 0.4 43785 18.88 0.00 0,00 0.00 0.00 41553.1 2231.6 168 0.4 43809 18.88 0.00 0.00 0.00 0.00 41564.0 2244.9 169 0.4 43833 18,88 0.00 0.00 0.00 0.00 41574.2 2258.3 170 0.4 43855 18.88 0.00 0.00 0.00 0.00 41583,7 2271.7 171 0.4 43878 18.88 0.00 0.00 0.00 0.00 41592.6 2285.0 172 0.3 43899 18.88 0.00 0.00 0.00 0.00 41600.8 2298.4 173 0.3 43920 18.88 0.00 0.00 0.00 0.00 41608.5 2311.8 174 0.3 43941 18.88 0.00 0,00 0.00 0.00 41615.5 2325.1 175 0.3 43960 18.88 0.00 0.00 0.00 0.00 41621.9 2338.5 176 0.3 43980 18.88 0.00 0.00 0.00 0.00 41627.8 2351.8 177 0.3 43998 18.88 0.00 0.00 0.00 0.00 41633A 2365.2 178 0.3 44016 18.88 0.00 0 00 0.00 0.00 41637.8 2378.6 179 0.3 44034 18.88 0.00 0.00 0.00 0.00 41642A 2391.9 180 0.3 44051 18.88 0.00 0.00 0.00 0,00 41645.9 2405.3 181 0.3 44068 18.88 0.00 0.00 0.00 0.00 41649.1 2418.7 182 0.3 44084 18.88 0.00 0.00 0.00 0.00 41651.9 2432.0 183 0.3 44100 18.88 0.00 0.00 0.00 0.00 41654.2 2445A 184 0.2 44115 18.88 0.00 0.00 0.00 0.00 41656.1 2458.7 185 0.2 44130 18.80 0.00 0.00 0.00 0.00 41657.5 2472A 186 0.2 44144 10.88 0.00 0.00 0.00 0.00 41658.6 2485.5 187 0.2 44158 18.88 0.00 0.00 0.00 0.00 41659,2 2498.8 m 188 0.2 44172 18.88 0.00 0,00 0.00 0.00 41659.4 2512.2 189 0.2 44185 18.88 0.00 0.00 0.00 0.00 41659.2 2525.6 1..� C 190 0.2 44198 1 B.88 0,00 0.00 0.00 0.00 41658.6 2538.9 r 191 0.2 44210 18.88 0.00 0.00 0.00 0.00 41657.7 2552.3 192 0.2 44222 18.8E 0.00 0,00 0.00 0.00 41656.4 2565.E w 193 0.2 44234 18.88 0.00 0.00 0.00 0.00 41654.8 2579.0 a 194 0.2 44245 18.68 0.00 0.00 0.00 0,00 41652.8 2592.4 195 0.2 44256 18.88 0,00 0.00 0.00 0.00 41650,5 2605.7 196 0.2 44267 18.88 0.00 0,00 0.00 0.00 41647.9 2619.1 R�7 197 0.2 44277 18.88 0.00 0.00 0.00 0.00 41645.0 2632.5 rn 198 0.2 44288 18.88 0,00 0.00 0.00 0.00 41641.8 2645.8 199 0.2 44297 18.88 0.00 0.00 0.00 0.00 41638.3 2659.2 200 0.2 44307 18.88 a.aa 0.00 0.00 0.00 41634.5 2672.5 201 0.2 44316 18.88 0.00 0.00 0.00 0,00 41630.4 2685.9 202 0.1 44325 18.88 0.00 0.00 0.00 0.00 41626.1 2699.3 203 0.1 44334 18.88 0.00 0.00 0.00 0.00 41621,5 2712.6 204 0.1 44343 18.88 0.00 0.00 0.00 0.00 41616.7 2726.0 Csi6512010110013�ARKER VEN1calc�lL0013 �iAi113Rion Tmnch R�I�q 14y24hr-Half ir{tll{SO {OENRj 8-1�-OP 0,00 41611.6 2739.4 Revised; 6118/12 Parker Ventures 10013 ALG Stormwater Infiltration Trench Routing 10-year 24hr Storm HALF INFILTRATION RATE 206 0.1 44359 18.88 0.00 0.00 0.00 0.00 41606.3 2752.7 207 0.1 44367 18.88 0.00 0.00 0.00 0.00 41600.7 2766.1 208 0.1 44374 18.88 0.00 0.00 0.00 0.00 41594.9 2779A 209 0.1 44382 18.88 0.00 0.00 0.00 0.00 41588.9 2792.8 210 0.1 44389 18.88 0.00 0.00 0.00 0.00 41582,7 2806.2 211 0.1 44396 18.88 0.00 0.00 0.00 0.00 41576.3 2819,5 212 0.1 44403 18.88 0.00 0.00 0.00 0.00 41569.7 2832.9 213 0.1 44409 18,88 0.00 0.00 0.00 0,00 41562.9 2846.3 214 0.1 44416 18.88 0.00 0.00 0.00 0.00 41555,9 2859.6 215 0.1 44422 18.88 0.00 0.00 0.00 0.00 41548.8 2873.0 216 0.1 44428 18.88 0.00 0.00 0.00 0.00 41541.4 2BB6.3 217 0.1 44434 18.88 0.00 0.00 0.00 0.00 41533.9 2899.7 218 0.1 44439 18.88 0.00 0,00 0.00 0.00 41526.2 2913.1 219 0.1 44445 18.88 0.00 0.00 0,00 0,00 41518.4 2926.4 220 0.1 44450 18,87 0.00 0.00 0.00 0.00 41510.4 2939.8 221 0.1 44455 18.87 0,00 0.00 0.00 0.00 41502.2 2953.2 222 0.1 44460 18.87 0.00 0,00 0.00 0.00 41493.9 2966.5 223 0.1 44465 18.87 0.00 0.00 0.00 0.00 41485.4 2979.9 224 0.1 44470 18.87 0.00 0.00 0.00 0.00 41476.8 2993.2 225 0.1 44475 18.87 0,00 0.00 0.00 0.00 41468.1 3006.E 226 0.1 44479 18.87 0.00 0.00 0.00 0.00 41459.2 3020.0 227 0.1 44484 18.87 0.00 0.00 0.00 0,00 41450.2 3033.3 228 0.1 44488 18,87 0.00 0.00 0.00 0.00 41441.1 3046.7 229 0.1 44492 18.87 0.00 0.00 0.00 0.00 41431.9 3060,1 230 0.1 44496 18.87 0.00 0.00 0.00 0.00 41422.5 3073.4 231 0.1 44500 18.87 0,00 0.00 0.00 0.00 41413.0 3086.8 232 0.1 44504 18.87 0.00 0.00 0.00 0.00 41403.5 3100,2 233 0.1 44507 18.87 0.00 0.00 0,00 0.00 41393.8 3113.5 234 4.1 44511 18.87 0,00 0.00 0.00 0.00 41384,0 3126.9 235 0.1 44514 18.87 0.00 0.00 0.00 0.00 41374.1 3140.2 236 DA 44518 18,87 0.00 0.00 0.00 0,00 41364.1 3153.6 237 0.1 44521 18.86 0.00 0.00 0.00 0.00 41354,0 3167.0 238 0.1 44524 18.86 0.00 0.00 0.00 0.00 41343.8 3180,3 239 0.0 44527 18.86 0.00 0.00 0.00 0,00 41333.5 3193.7 240 0.0 44530 18.86 0,00 0.00 0.00 0.00 41323.1 3207.1 241 0,0 44533 18.86 0.00 0.00 0.00 0.00 41312.7 3220.4 242 0.0 44536 18.86 0.00 0.00 0.00 0.00 41302.2 3233,B 243 0.0 44539 18.86 0.00 0.00 0.00 0.00 41291.5 3247.1 244 0.0 44541 18.86 0,00 0.00 0.00 0.00 41280.8 3260.5 245 0.0 44544 18.86 0-00 0.00 0.00 0.00 41270.1 3273.9 EGEIVE JUL 3 4 202 G:UQB512010110013-PARKER VENTURMcalcM10013 Infiltration Trench Raining 10yr24nr- Hall InG7t R61e (DENR) 6-18-12 Revised: 6118/12 Parker Ventures ALG Stormwater Infiltration Trench Routing 10-year24hr Storm HALF INFILTRATION RATE 3330 0.0 44632 16.21 0.00 0.00 0.00 0.00 133.9 44497.9 3331 0.0 44632 16.21 0.00 0,00 0.00 0.00 120.6 44511,2 3332 0.0 44632 16.21 0.00 0.00 0.00 0.00 107.2 44524.E 3333 0.0 44632 16.21 0.00 0.00 0.00 0.00 93.9 44538.0 3334 0.0 44632 16.21 0.00 0.00 0.00 0.00 80.5 44551.3 3336 0.0 44632 -16.20 0.00 0.00 .0.00 0.00 67.1 44564.7 3336 0.0 44632 16.20 0.00 0.00 0.00 0.00 53.8 44578.0 3337 0.0 44632 16.20 0.00 0.00 0.00 0.00 40.4 44591.4 3338 0.0 44632 16.20 0.00 0.00 0.00 0.00 27.0 44604.8 3339 0.0 44632 16.20 0.00 0.00 0.00 0.00 137 44618.1 3340 0.0 44632 16.20 0.00 0.00 0.00 0.00 0.3 44631.5 3341 0.0 44632 16.20 0.00 0.00 0.00 0.00 0.0 44644.9 3342 0.0 44632 16.20 0.00 0.00 OM 0.00 0.0 44658.2 3343 0.0 44632 16.20 0.00 0.00 0.00 0.00 0.0 44671.6 3344 0.0 44632 16,20 0.00 0.00 0.00 0.00 0.0 44684.9 3345 0.0 44632 16,20 0.00 0.00 0.00 0.00 0.0 44698.3 3346 0.0 44632 16.20 0,00 0.00 0.00 0.00 0.0 44711.7 3347 0.0 44632 16,20 0.00 0.00 0.00 0.00 0.0 44725.0 3348 0.0 44632 16,20 0.00 0.00 0.00 0.00 0.0 44738.4 3349 0.0 44632 16.20 0.00 0.00 0.00 0.00 0.0 44751.8 3350 0.0 44632 16.20 0.00 0.00 0.00 0.00 0.0 44765.1 3351 0.0 44632 16.20 0.00 0.00 0.00 0.00 0.0 44778.5 3352 0,0 44632 16.20 0.00 0,00 0,00 0.00 0,0 44791.8 3353 0.0 44632 16.20 0.00 0.00 0.00 0.00 0.0 44805.2 3354 0.0 44632 16.20 0.00 0.00 0.00 0.00 0.0 44818.6 3355 0,0 44632 16,20 OM 0.00 0.00 0.00 0.0 44831.9 3356 0.0 44632 16.20 0,00 0.00 0,00 0.00 0.0 44845,3 3357 0.0 44632 16.20 0.00 0.00 0.00 0.00 0.0 44858.7 3356 0.0 44632 16.20 0.00 0.00 0.00 0,00 0.0 44872.0 3359 0.0 44632 16.20 0,00 0.00 0.00 0.00 0.0 44885.4 3360 0.0 44632 16.20 0.00 0.00 0.00 0.00 0.0 44898.7 ECEI V E JUL 3 0 202 10013 G;WB51201011 D013-PARKER VENTURESIcalca110013 Infiltration Trench Routng 10y24hr • Had Inhlt Rate (DENR) B-18.12 Revised: 6/18/12 ALG Parker Ventures 25 and 100 Year Storm Pipe and HGL Calculations 10013 LOCATION AREA RUNOFF RAIN INCREMEIRCE AL PIPE DATA COEFF. INT. FLOWW SUB Q=CIAIA Q Friction Pond Inlet WS Rim FROM TO TOTAL TOTAL C I (C.F.SS. TYPE N LENGTH S % SIZE VEL. AVAIL. Loss (Hf) Elev. Elay. Elev. Acre) (Acre (Inlhr REQ'DD (tt (in (fps) Ids (nJ ft (tt ttj 25 YEAR DI #7 01 #6 0,16 0.16 0.80 8.15 1.04 1.04 RCP 0.013 30 0.30% 15 0.9 3.55 0,0054 18.90 18.92 20,00 DI #6 Infilt. Basin 0.14 0.30 0.80 8.15 0.91 1.96 RCP 0.013 19 0.50% 15 1.6 4.58 0.0120 18.90 18.92 20.50 DI #5 DI 44 0.19 0.19 0.80 8.15 1.24 1.24 RCP 0.013 170 0,30% 15 1.0 3.55 0.0430 18.90 19.20 20.30 DI #4 DI #3 0.24 0.43 0.80 8.15 1.56 2.80 RCP 0.013 70 0.3D% 15 2.3 3.55 0.0908 18.90 19.16 19.80 DI #3 DI #2 0.08 0.51 0.80 8.15 0.52 3.33 RCP 0.013 73 0.30% 15 2.7 3.55 0A 32 18.90 19.07 20.20 DI #2 Infilt. Basin 0.26 0.77 0$0 8.15 1.70 5.02 RCP 0.013 19 0.30% 18 2,8 5.77 0.0318 18.90 18.94 20.50 DI #1 Infilt. Basin 0.20 0.20 0.80 8.15 1.30 1.30 RCP 0,013 19 0.30% 15 1 1,1 1 3.55 0.0053 18.90 18,91 20.50 01 #13 Infilt. Basin 0.12 0.12 0.80 8.15 1 0.78 0.78 RCP 0.013 19 0.30% 15 0.6 3.55 0.0019 18.90 18.90 20.50 DI #12 DI #11 0.30 0.30 0.80 8.15 1.96 1.96 RCP M13 152 0.30% 15 1.6 3.55 0.0959 18.90 19.21 20.30 DI #11 DI #10 0.12 0.42 0.80 8.15 0.78 2.74 RCP 0.013 50 0.30% 15 2.2 3.55 0.0619 18.90 19.11 19.80 DI #10 DI #9 0,10 0.52 0.80 8,15 0.65 3.39 RCP 0.013 65 0.30% 15 2.8 3.55 0.1233 18.90 19.05 20.00 DI #9 Infilt. Basin 0.18 0.70 0.80 8.15 1.17 4.56 RCP 0.013 19 0.30% 18 2.6 5.77 0,0262 18.90 18.93 20,50 DI #8 Infilt. Basin 0.15 015 0.80 1 8.15 0.98 0.98 RCP 0.013 19 0.30% 15 0.8 3.55 0.0030 18.90 18.90 1 20.50 Control Struct. JB #1 1 0.00 1 0,00 1 0,80 1 8.15 1 1.31 j 1.31 1 RCP 0.013 1 103 1 0.30% 1 18 0.7 1 5.77 1 0.0117 1 16.00 1 16.03 1 20.80 JB #1 1 Pipe End LO.00 1 0.00 j 0.80 18.115 j 0.00 1.31 1 RCP 0.013 1 198 1 0.30% 1 18 1 0.7 1 5.77 1 0.0225 1 16.00 1 16.02 1 19.00 See 25-yr Pond Routing Calculations for Outfall Flaw "`Assumes tailwater condition in downstream "Exst. Ditch" is approximately Flowing 25% full. RECEIVED JUN ! 9 2012 BY: G', OOBS 2010110013-PARKER VENTURES�ca"ii 0Oi3 25 yr d 100 yr drain pipes 6 HGL B-18-12 Revised: 6/18112 ALG Parker Ventures 25 and 100 Year Storm Pipe and HGL Calculations 10013 LOCATION AREA RUNOFF RAIN INCREMENTAL TOTAL PIPE DATA COEFF. INT. FLOW FLOW SU8 Q=CIA Q=ClA Q Friction Pond Inlet W5 Rim FROM TO TOTAL TOTAL C I (G.F.S. {C.F.S. TYPE N LENGTH S % SIZEL1011 EL. AVAIL. LOSS (FIf) Elev. Elev. Elev. (Acre) (Acre Infhr REQ'O REQ'D) (n) {Incfs ft) {ft n n 100 YEAR DI #7 DJ #6 0.16 0.16 0.80 9.60 1.23 1,23 RCP 0.013 30 0.30% 15 1.0 3.55 0.0075 19.20 19.23 20.00 DI #6 Infilt. Basin 0.14 0.30 0.80 9.60 1.08 2.30 RCP 0.013 19 0.50% 15 1.9 4.58 0.0166 19.20 19.22 20.50 DI #5 DI #4 0.19 0.19 0.80 9.61) 1.46 1.46 RCP 0,013 170 0.30% 15 1.2 3.55 0.0597 19.20 19.62 20.30 DI 44 DI #3 0.24 0.43 0.80 9.60 1,84 3.30 RCP 0.013 70 0.30% 15 2.7 3.55 0.1259 1 19.20 19.56 19.80 DI #2 0.08 0.51 0.80 9.60 0.61 3.92 RCP 0.013 73 0.30% 15 3.2 3,55 0.1846 19.20 19.44 20.20 L13 Infilt, Basin 0.26 0.77 0.80 9.60 2.00 5.91 RCP 0.013 19 0,30% 18 3.3 5.77 0.0441 19.20 19.25 20.50 DI #1 Infilt. Basin 0.20 0.20 0.80 9.6o 1.54 1.54 RCP 0.013 19 0.30% 15 1.3 3.55 0.0074 19.20 19.21 20.50 DI #13 Infilt. Basin 0.12 0,12 0,80 9.60 0.92 0.92 RCP 0,013 19 0.30% 15 0.8 1 3.55 0.0027 19.20 19.21 20.50 DI #12 DI #11 0.30 0.30 0.80 9.60 2.30 2.30 RCP 0.013 152 0.30% 15 1.9 3.55 0.1331 19,20 19.63 20.30 01 #11 DI #10 0.12 0.42 0.80 9.60 0.92 3.23 RCP 0.013 50 0,30% 15 2.6 3.55 0,0858 19.20 19.50 19,80 DI #10 DI #9 0.10 0.52 0.80 9.60 0.77 3.99 RCP 0.013 65 0.30% 15 3.3 3.55 0.1710 19.20 19,41 20.00 DI #9 Infilf. Basin 0.18 0.70 0.80 9.60 1.38 5.38 RCP 0.013 19 0.30% 18 3.0 5.77 1 0.0364 19.20 1924. 20.50 DI #8 Infilt. Basin 0.15 0.15 1 0.80 9.60 1,15 1.15 RCP 0.013 19 0.30% 1 15 0.9 1 3.55 1 0.0042 1 19.20 19,20 20.50 Control Struct. JB #1 0.00 0.00 0.80 9.60 4.88 4,88 RCP 0.013 103 1 0.30% 1 18 2.8 5.77 0.1626 1 16,25 1 16.73 20.80 JB #1 1 Pipe End 0.00 0.00 0.80 9.60 0.00 4.88 RCP 0.013 198 0.30% 18 2.8 5.77 0.3126 L 16.25 1 16.56 1 i9.00 See 100-yr Pond Routing Calculations for Cutfall Flow "Assumes taitwater condition in downstream "Exst. Ditch" is approximately Flowing 50% full. Pond Required Zone 1 for a 18" 5'x5'x18" Energy Dissipater Sizing (WxLKH) Minimum Provided Zone i for a 18" 5'x5'x18" JUN 1 9 2012 G,VOB512D1Di1 DOI 3-PARKER VENTURES%caIcs510013 25 yr A 100 yr drain pipes S HGL 618-12 Revised: 6/18/12 Parker Ventures 1#: 10013 ALG Simple Method -1.5" Storage Volume Calculations Infiltration Trench Infiltration Basin - Storage Volume - Non SA Waters -_Minimum Volume Required Volume of Runoff = V = (3630) (Design Rainfall Depth) (Rv) (Drainage Area) where Rv= 0.05+0.009(IA) Rv = Runoff Coefficient = storm runoff (inches) / storm rainfall (inches) IA = Impervious Fraction = Impervious portion of the drainage area (acres) 1 Drainage area (acres) IA= 77.7 % Rv = 0.75 Design Rainfall Depth = 1.50 in. Drainage Area = 2.24 acres Volume Required = 9,139 ft3 Volume Provided = 45,002 ft3 (Includes 95% Void) `Notes for Vol. Provided: 5,418 Double Rain Tank Units Proposed Each Rain Tank Unit provides approximately 8.306 cf of water storage o1111111111, CAR& a� - 0 a I EGA ��lll � 11111110� ECEBVE I� JUN 19 2012 13Y: G:u0BS\2010\10p13- PARK ER VENTURES\calcs\10013Infiltration Basin Storage Volume Cala 1.5inch 6-18-12 Revised: 6118112 ALG WATERSHED DATA BEFORE DEVELOPMENT WATERSHED AREA 2.24 ACRES HYDRAULIC LENGTH 250 FT CHANGE IN HEIGHT i FT RUNOFF COEF, 'C' 0.1 TIME OF CONCENTR 5.00 MIN INTENSITY 10 YR 7.00 IN1HR Qa = 1.57 CFS Qa = PRE -DEVELOPED PEAK DISCHARGE COMPUTE DEPTH OF RUNOFF P = 7.23 INCHES 10yr, 24hr PRECIPITATION CN = 85 S = (10001CN)-10 S= 1.76 Depth (D) = (P-0,2S)"21(P+0.8S) D = 5.47 IN - 1 Cyr, 24hr RUNOFF DEPTH SET VOLUME AND COMPUTE TIME TO PEAK Tp = 1(43.5)(D)(Area)] I Op Tp = 44.75 MINUTES Storage Volume Req'd = (Qp-Qa)'Tp'1.39'60 = 38,622 cu. ft. CALCULATE Ks AND b SET NORMAL ELEVATION AT = 16.20 feet Parker Ventures Stormwater Infiltration Trench Routing 10-year 24hr Storm HALF INFILTRATION RATE AFTER DEVELOPMENT WATERSHED AREA 2.24 ACRES HYDRAULIC LENGTH 250 FT CHANGE IN HEIGHT 1 FT RUNOFFCOEF,'C' 0.76 TIME OF CONCENTR 5.00 MIN INTENSITY J10 YR 7.00 IN1HR Qp = 11.92 CFS Qp = POST -DEVELOPED PEAK DISCHARGE S Z CONTOUR INCR ACCUM CONTOUR AREA VOL VOL STAGE In S In Z Z est (sq ft) (cu ft) (cu ft) (ft) (ft) 16.20 15518 0 0 0 0 0 0 17.00 15518 12,414 12,414 0.8 9.4266 -0.2231 0.80 17.50 15518 7.759 20,173 1.3 9A121 0.2624 1.30 19.10 15518 24,829 45,002 2.9 10,7145 1.0647 2.90 'NOTE: Contour Area includes 05% Void Ratio for Eco Rain Tanks. Regression Output: ==> Ks = 15518 b= 1.00 X Coefficient 9.65 10013 G:U0eS12010%10013-PARKER VENTURES%caIcs%10013 Infiltration Trench Routing 10y24hr-Hall Infil1 Rate (DENR) 6-18-12 Revised: 6118/12 Parker Ventures ALG Stormwater Infiltration Trench Routing 10-year 24hr Storm HALF INFILTRATION RATE CHAINSAW METHOD FOR RISER BARREL ROUTING STORM DATA Qa = 7.24 Cfs Qp= 11A2 cfsACFlritiltratfonlate'y `:::fi c'0.62 inlhr Tp = 44.7 min (Per Soils Report) dT = 1 min BASIN DATA Basin Drawdown Time = `.;'J;'e;�55.6 hours Ks = 15518 (see Page 6 this report) b = 1.00 Zo = 16.20 11 Normal water elev = 16.20 It Peak Outflow = 0.00 cis Box Weir Length = 0 It Peak Stage = 18.88 It Cw = 0.0 Maximum Storage = 41,659 cu ft Zcr = 0.00 It Cgntrol Holes: State Orifice; Oia = 0.00 in Dd = 18 in Inv = 0.00 it Cd = 0.59 Weir: L = 48 in Zi = 16.50 ft Inv = 18.9 ft Time Inflow Storage Stage Outflow W Riser Orifice Weir IFSlore Infiltrate (min) (cfs) (cu ft) (ft) (cfs) (Cfs) (Cfs) (cfs) (Cu ft) (CI) 0 0.0 0 16.20 0 0 0 0,00 0.0 0.0 1 0,0 0 16.20 0 0.00 0 0,00 0.0 13.4 2 0.1 1 16.20 0.00 0.00 0.00 0,00 0.0 26.7 3 0.1 4 16.20 0,00 0.00 0.00 0.00 0.0 40.1 4 0.2 12 16,20 0.00 0.00 0,00 0.00 0.0 53.5 5 0.4 26 16.20 0.00 0.00 0.00 0.00 0.0 66.8 6 0.5 48 16.20 0.00 0.00 0.00 0,00 0.0 80.2 7 0.7 79 16.20 0,00 0.00 0.00 0.00 0.0 93.5 8 0.9 122 16,20 0.00 0.00 0A0 0.00 14.8 106.9 9 1.2 177 16,20 0.00 0.00 0.00 0.00 56.3 120.3 10 1.4 246 16.21 0.00 0.00 0.00 0.00 112.0 133.6 11 1.7 330 16.21 0.00 0.00 0.00 0,00 183.2 147.0 12 2.0 432 16.22 0.00 0.00 0.00 0,00 271.2 160A 13 2.3 551 16.22 0,00 0.00 0.00 0.00 377A 173.7 14 2,7 690 16.23 0.00 0.00 0.00 0.00 502.9 187,1 15 3,0 849 16.24 0,00 0.00 0.00 0.00 648.7 200.4 16 3.4 1030 16.25 0.00 0.00 0,00 0.00 815.9 213.8 17 3.8 1233 16,26 0.00 0.00 0.00 0.00 1005.4 227.2 18 4.2 1458 16.28 0.00 0.00 0.00 0.00 1217.8 240.5 19 4.6 1708 16.29 0.00 0.00 0.00 0.00 1453.9 253.9 20 5.0 1981 16.31 0.00 0,00 0.00 0,00 1714.1 267.3 21 5.4 2280 16.33 0.00 0.00 0.00 0,00 1998.9 280.E 22 5.8 2603 16,35 0.00 0.00 0.00 0.00 2308.6 294.0 23 6.2 2951 16.37 0.00 0.00 0,00 0.00 2643.4 307.3 24 6.6 3324 16.39 0,00 0.00 0.00 0.00 3003.2 320.7 25 7.1 3722 16,42 0.00 0.00 0.00 0.00 3388.1 334.1 26 7.5 4145 16.44 0.00 0.00 0.00 0,00 3797.7 347.4 27 7.9 4593 16A7 0.00 0.00 0.00 0,00 4231.9 360.8 28 8.3 5064 16.50 0.00 0.00 0.00 0.00 4690,1 374.2 29 8.6 5559 16.53 0.00 0.00 0.00 0.00 5171.8 387.5 30 9.0 6077 16,57 0.00 0,00 0.00 0.00 5678.3 400.9 31 9.4 6617 16.60 0.00 0.00 0.00 0,00 6202.8 414.2 32 9.7 7178 16,64 0,00 0.00 0.00 0.00 6750.5 427.6 33 10.0 7759 16.67 0.00 0.00 0.00 0.00 7318.2 441.0 34 10.3 8359 16.71 0.00 0.00 0.00 0.00 7905.0 454.3 35 10.6 8977 16.75 0.00 0.00 0.00 0.00 8509,6 467.7 36 10.8 9612 1 &.79 0.00 0.00 0.00 0.00 9130.7 481.1 37 11 A 10261 16.83 0.00 0.00 0.00 0.00 9767.0 494.4 38 11.3 10925 16.87 0.00 0.00 0.00 0.00 10417.1 507.8 39 11.4 11600 16.91 0.00 0.00 0.00 0.00 11079.3 521.1 40 11.6 12287 16.96 0.00 0.00 0.00 0.00 11752.3 634.5 41 11.7 12982 17.00 0.00 0.00 0,00 0.00 12434.2 547.9 42 11.8 13685 17.05 0.00 0.00 0.00 0.00 13123.6 561.2 43 11.9 14393 17.09 0.00 0.00 0.00 0.00 13818.6 574.6 44 11.9 15105 17.14 0.00 0.00 0.00 0.00 14517.5 588.0 45 11.9 15820 17.18 0.00 0.00 0.00 0.00 15218.7 601.3 46 11.9 16535 17.23 0.00 0.00 0.00 0.00 15920,3 614.7 47 11.8 17249 17.27 0.00 0.00 0.00 0.00 16620.5 628.0 G,U013S1201(mool3-PARKER VENTURES/calcs110013 Infiltration Trench Routing i0y24hr - Hatt Infiu Rate (DENR) 6-111-12 10013 Revised: 6118112 Parker Ventures 10013 ALG Stormwater Infiltration Trench Routing i0-year 24hr Storm HALF INFILTRATION RATE 46 11.8 17959 17.32 0.00 0.00 0.00 0.00 17317.7 641.4 49 11.7 18665 17.36 0.00 0.00 0.00 0.00 18010.1 654.8 50 11.5 19364 17.40 0.00 0,00 0.00 0.00 18695,9 668.1 51 11.4 20055 17.45 0.00 0.00 0.00 0.00 19373.6 681.5 52 11.2 20736 17.49 0.00 0.00 0.00 0.00 20041.3 694.9 53 10.9 21406 17.53 0.00 0.00 0.00 0,00 20697.E 708.2 54 10.7 22063 17.58 0.00 0.00 MCI 0,00 21341.0 721.6 55 10.4 22705 17,62 0.00 0.00 0.00 0.00 21969.8 734.9 56 10.2 23331 17.66 0.00 0.00 0.00 0.00 22582,8 748.3 57 9.9 23941 17.69 0.00 0.00 0.00 0.00 23179.3 761.7 58 9.6 24533 17.73 0.00 0.00 0.00 0.00 23758.4 775.0 59 9.3 25109 17.77 0.00 0.00 0.00 0,00 24320.5 788.4 60 9.0 25668 17,80 0.00 0.00 0.00 0.00 24866.2 801.8 61 8.8 26211 17.84 0.00 0,00 0.00 0.00 25395.8 815.1 62 8.5 26738 17.87 0.00 0.00 0.00 0.00 25909.9 828.5 63 8.3 27251 17.90 0.00 0.00 0.00 0.00 26408.9 841.9 64 8.1 27748 17.93 0.00 0.00 0.00 0.00 26893.2 855.2 65 7.8 28232 17.96 0.00 0.00 0.00 0.00 27363.3 868.6 66 7.6 28701 17.99 0.00 0.00 0.00 0.00 27819.5 881,9 67 7.4 29158 18.02 0.00 0.00 0.00 0.00 28262.2 895.3 fib 7.2 29601 18.05 0.00 0.00 0.00 0.00 28692.0 908.7 69 7.0 30031 18.08 0.00 0.00 0.00 0.00 29109.0 922.0 70 6.8 30449 18.10 0,00 0.00 0.00 0.00 29513.7 935.4 71 6.6 30855 18.13 0.00 0.00 0.00 0.00 29906.4 948.8 72 6.4 31250 18.15 0.00 0.00 0.00 0.00 30287.5 962.1 73 6,2 31633 18.18 0.00 0.00 0.00 0.00 30657.3 975.5 74 6.0 32005 18.20 0.00 0.00 0.00 0.00 31016.2 988.8 75 5,9 32367 18.22 0.00 0.00 0.00 0.00 31364.4 1002.2 76 5.7 3271E 18,24 0.00 0.00 0.00 0.00 31702.2 1015.6 77 5.5 33059 18.26 0.00 0.00 0.00 0.00 32030.0 1028.9 78 5.4 33390 18.28 0.00 0,00 0.00 0.00 32348.0 1042.3 79 5.2 33712 18.30 0.00 0.00 0.00 0.00 32656.5 1055.7 80 5.1 34025 18.32 0.00 0.00 0.00 0.00 32955.8 1069.0 81 4.9 34329 18.34 0.00 0.00 0.00 0.00 33246.1 1082,4 82 4.8 34624 18.36 0.00 0,00 0.00 0.00 33527.8 1095.7 83 4.6 34910 18.38 0.00 0.00 0.00 0.00 33801.0 1109.1 84 4,5 35188 18.40 0.00 0.00 0.00 0,00 34066.0 1122.5 85 4.4 35459 18.41 0.00 0.00 0.00 0.00 34323.0 1135.8 86 4.3 35722 18,43 0.00 0.00 0.00 0.00 34572.3 1149,2 87 4.1 35977 18.44 0.00 0.00 0.00 0.00 34814.1 1162,E 88 4.0 36224 18.46 0.00 0.00 0.00 0.00 35048.6 1175.9 89 3.9 36465 1BA7 0.00 0.00 0.00 0.00 35275.9 1189.3 90 3.8 36699 18.49 0.00 0.00 0.00 0.00 35496.4 1202.6 91 3.7 36926 18.50 0.00 0.00 0.00 0.00 35710.2 1216.0 92 3.6 37147 18.51 0.00 0.00 0.00 0.00 35917.4 1229.4 93 3.5 37361 18.53 0.00 0.00 0.00 0.00 36118.4 1242.7 94 3A 37569 18.54 0.00 0.00 0.00 0.00 36313.2 1256.1 95 3.3 37772 18,55 0.00 0.00 0.00 0.00 36502.1 1269.5 96 3.2 37968 18.5E 0.00 0.00 0.00 0.00 36685.1 1282.8 97 3.1 38159 18.58 0.00 0.00 OM 0.00 36862.6 1296.2 98 3.0 38344 18.59 0.00 0.00 0.00 0.00 37034.6 1309.5 99 2.9 38524 18,60 0.00 0.00 0.00 0.00 37201.2 1322.9 100 2.8 38699 18.61 0.00 0.00 0.00 0.00 37362.8 1336.3 101 2.8 38869 18.62 0.00 0,00 0.00 0.00 37519.3 1349.6 102 2.7 39034 18.63 0.00 0.00 0.00 0.00 37670.9 1363,0 103 2.6 39194 18.64 0.00 0.00 0.00 0.00 37817.8 1376.4 104 2.5 39350 18.65 0.00 GM 0.00 0.00 37960.2 1389.7 105 2.4 39501 18.66 0.00 0.00 0.00 0.00 38098.1 1403,1 106 2.4 39648 18.66 0.00 0.00 0.00 0.00 38231.6 1416.4 107 2.3 39791 18.67 0.00 0.00 0.00 0.00 38360.9 1429.8 108 2.2 39929 18.68 0.00 0.00 0.00 0.00 38486.2 1443.2 109 2.2 40064 18.69 0.00 0.00 0.00 0.00 3B607.5 1456.5 110 2.1 40195 18.70 0.00 0.00 0.00 0,00 38724.9 1469.9 111 2.1 40322 18.70 0.00 0.00 0.00 0.00 38838.6 1483.3 112 2.0 40445 18,71 0.00 0.00 0.00 0.00 38948.6 1496.6 113 1.9 40565 18.72 0.00 0.00 0.00 0.00 39055.1 1510.0 114 1.9 40682 18.72 0.00 0.00 0.00 0.00 39158.2 1523.4 115 1.8 40795 18.73 0.00 0.00 0.00 0.00 39258.0 1536.7 116 1.8 40905 18.74 0.00 0.00 0.00 0.00 39354.5 1550.1 117 1.7 41011 18.74 0.00 0.00 0,00 0.00 39447.8 1563.4 118 1.7 41115 18,75 0.00 0.00 0.00 0.00 39538.1 1576.8 119 1.6 41215 18.75 0.00 0,00 0.00 0.00 39625.5 1590.2 120 1.6 41313 18.76 0.00 0.00 0.00 0.00 39709.9 1603.5 121 1.5 41408 18.76 0.00 0.00 0.00 0.00 39791.6 1616.9 122 1.5 41501 18.77 0.00 0.00 0.00 0.00 39870.5 1630.3 123 1.5 41590 18.77 0,00 0.00 0,00 0.00 39946.8 1643.6 124 1.4 41677 18.78 0.00 0.00 0.00 0.00 40020.5 1657.0 125 1.4 41762 18,78 0.00 0.00 0.00 0.00 40091.7 1670.3 GtZ8S12010000t317ARKER VEN40gd,4 c.i.1100131A]Tiltion Trench RAN 10y24hr - Hall WUPale (GENR) 6 %QQ 0.00 40160.6 1683.7 Revised: 6118112 Parker Ventures 10013 ALG Stormwater Infiltration Trench Routing 10-year 24hr Storm HALF INFILTRATION RATE 127 1,3 41924 18.79 0.00 0.00 0.00 0.00 40227,0 1697.1 128 1.3 42002 16.80 0.00 0.00 0.00 0.00 40291.2 1710.4 129 1.2 42077 18.80 0.00 0.00 0.00 0.00 40353.1 1723.8' 130 1.2 42150 18.80 0.00 0.00 0.00 0.00 40412.9 1737.2 131 1.2 42221 18.81 0.00 0.00 0.00 0.00 40470.6 1750.5 132 1.1 42290 18.81 0.00 0.00 0.00 0.00 40526.3 1763,9 133 1,1 42357 18.82 000 0.00 0.00 0.00 40580,0 1777.2 134 1.1 42422 18.82 0.00 0.00 0.00 0.00 40631.7 1790.6 135 1.0 42486 18.82 0.00 0.00 0.00 0A0 40681,6 1804.0 130 1.0 42547 18.82 0.00 0,00 0.00 0.00 40729.7 1817.3 137 1.0 42607 18.83 0.00 OW 0.00 0.00 40776.1 1830.7 138 0.9 42665 18,83 0.00 0.00 0.00 0.00 40820.7 1844.1 139 0.9 42721 18.83 0.00 0.00 0.00 0.00 40863.6 1857.4 140 0.9 42776 18.84 000 0.00 0.00 0.00 40905.0 1870,8 141 0.9 42829 18.84 0.00 0.00 0.00 0.00 40944.8 1884,1 142 0.8 42881 18.84 0.00 0.00 0.00 0.00 40983.0 1897.5 143 0.8 42931 18.84 0.00 0.00 0.00 0.00 41019.8 1910.9 144 0.8 42979 18.85 0.00 0.00 0.00 0.00 41055.2 1924.2 145 0.8 43027 18.85 0.00 OM 0.00 0.00 41089.1 1937.6 146 0.7 43073 18.85 0.00 0.00 0,00 0.00 41121.7 1951.0 147 0.7 43117 18.85 000 0.00 0.00 0.00 41153,0 1964.3 148 0.7 43161 18.85 0.00 0.00 0.00 0.00 41183.0 1977.7 149 0.7 43203 18,86 D.00 0.00 0.00 0.00 41211.7 1991.0 150 0.7 43244 18.86 0.00 0.00 0.00 0.00 41239.3 2004,4 151 0.6 43283 18.86 0.00 100 0.00 0.00 41265.7 2017,8 152 0.6 43322 18.86 0.00 0.00 0.00 0.00 41290.9 2031.1 153 0.6 43360 18.86 0.00 0.00 0.00 0.00 41315.1 2044.5 154 0.6 43396 18.86 000 0.00 0.00 0.00 41338.1 2057.9 155 0.6 43431 18.87 0,00 0.00 0.00 0.00 41360.2 2071.2 156 0,6 43466 18.87 0.00 0.00 0.00 0.00 41381.2 2084,6 157 0.5 43499 18.87 0.00 0.00 0.00 0.00 41401.2 2097.9 158 6.5 43532 18.87 0.00 0.00 0.00 0.00 414201 2111.3 159 0.5 43563 18.87 0.00 0,00 0.00 0.00 41438.4 2124.7 160 0.5 43594 18.87 0.00 0.00 0.00 0.00 41455.6 2138.0 161 0.5 43623 18.87 0.00 000 0.00 0.00 41472.0 2151.4 162 0.5 43652 18.87 0.00 0.00 0.00 0M 41487.5 2164.8 163 0.5 43680 18.87 0,00 D00 0.00 0.00 41502.2 2178,1 164 0.4 43708 18.88 0.00 0.00 0.00 0.00 41516.1 2191.5 165 0.4 43734 18.88 0.00 0.00 0.00 0.00 41529.2 2204.8 166 0,4 43760 18.88 0.00 0.00 0.00 0.00 41541,5 2218.2 167 0.4 43785 18.88 0.00 0.00 0.00 0.00 41553.1 2231.6 168 0.4 43809 18.88 0.00 0.00 0.00 MID 41564.0 2244.9 169 0.4 43833 18.86 0.00 0.00 0.00 0.00 41574.2 2258,3 170 0.4 43855 18.88 0,00 0.00 0.00 0.00 41583.7 2271.7 171 0.4 43878 18.88 0.00 DAD 0.00 0.00 41592,6 2285.0 172 0.3 43899 18.88 0.00 0.00 0.00 0.00 41600,8 2298.4 173 0.3 43920 18.88 0.00 0.00 0.00 0.00 41608.5 2311.8 174 0.3 43941 18,88 0.00 0.00 0.00 0.00 41615.5 2325.1 175 0.3 43960 18.88 0,00 0.00 0.00 0.00 41621.9 2338.5 176 0.3 43980 18.88 0.00 0.00 0.00 0.00 41627.8 2351.8 177 0.3 43998 18.88 0.00 0.00 0.00 D.00 41633,1 2365.2 178 0.3 44016 18.88 0.00 OM 0.00 0.00 41637-8 2378.6 179 0.3 44034 18.88 0.00 0,00 0.00 0.00 41642.1 2391.9 180 0.3 44051 18.88 0.00 0.00 0.00 0.00 41645.9 2405.3 181 0.3 44068 18.88 0.00 0.00 0.00 0.00 41649.1 2418.7 182 0.3 44084 18.88 0.00 0.00 0.00 0.00 41651.9 2432.0 183 0.3 44100 18.88 0.00 0.00 0.00 0.00 41654.2 2445.4 184 0.2 44115 18.88 0.00 0.00 0.00 0.00 41656.1 2458.7 185 0.2 44130 18,88 0.00 OA0 0.00 0.00 41657.5 2472.1 186 0.2 44144 18.88 0.00 0.00 0.00 0.00 41658.6 2485.5 187 0.2 44158 18.88 0.00 0.00 0.00 0.00 41659.2 2498.8 18B 0.2 44172 18.88 0.00 0.00 0,00 0.00 41659.4 2512.2 189 0.2 44185 18.88 0.00 0.00 0.00 O.00 41659.2 2525.6 190 0.2 44198 18.88 0,00 0.00 0.00 0.00 41658,6 2538.9 191 0.2 44210 18.88 0.00 0.00 0.00 0.00 41657.7 2552.3 192 0.2 44222 18.88 0.00 0.00 0.00 0.00 41656.4 2565.6 193 0.2 44234 18.88 0.00 0.00 0.00 0,00 41654.8 2579.0 194 0.2 44245 18.88 0.00 0.00 0.00 0.00 41652.8 2592.4 195 0.2 44256 18,88 0,00 0.00 0.00 0.00 41650.5 260$.7 196 0.2 44267 18.88 0.00 0.00 0DO 0.00 41647.9 2619.1 197 0.2 44277 18.68 0.00 0.00 0.00 0.00 41645.0 2632.5 198 0.2 44288 18.88 0.00 0.00 0.00 GM 41641.8 2645.8 199 0.2 44297 18.88 0.00 0.00 0.00 0.00 41638,3 2659.2 200 0.2 44307 18.88 0.00 0.00 0.00 0.00 41634.5 2672.5 201 O.2 44316 18.88 0.00 0.00 0.00 0.00 41630.4 2685.9 202 0.1 44325 18.88 0.00 0.00 0.00 0.00 41626A 2699.3 203 0.1 44334 18.88 0.00 0.00 0.00 0.00 41621.5 2712.6 204 0.1 44343 18.88 0.00 0.00 0.00 0.00 41616.7 2725.0 GV6B51201M1001AZARKER VENi114Q695caIcs11D01310i1f}$tion Trench FA0q IGyr24hr- Half APPate (DE NR)fi-{>3rJQ 0.00 41611.6 2739.4 Revised: 6118112 Parker Ventures 10013 ALG Stormwater Infiltration Trench Routing 10-year 24hr Storm HALF INFILTRATION RATE 206 0.1 44359 18.88 0.00 0.00 0.00 0.00 41606.3 2752.7 207 0.1 44367 18.88 0.00 0.00 0,00 0.00 41600.7 2766.1 208 0.1 44374 18.88 0.00 0,00 0.00 0.00 41594.9 2779.4 209 0.1 44382 18.88 0.00 0.00 0.00 0.00 41588.9 2792.8 210 0.1 44389 18AS 0.00 0.00 0.00 0.00 41552.7 2806.2 211 0.1 44396 18.88 0.00 0.00 0.00 0,00 41576.3 2819.5 212 0.1 44403 18.88 0,00 0.00 0.00 0.00 41569.7 2832.9 213 0.1 44409 18.88 0.00 0.00 0.00 0.00 41562.9 2846.3 214 0.1 44416 18.88 0.00 0.00 0.00 0.00 41555,9 2859.6 215 0,1 44422 18.88 0.00 0,00 0.00 0.00 41548.8 2873.0 216 0.1 44428 18.88 0.00 0.00 0.00 0.00 41541.4 2886.3 217 0.1 44434 18.88 0.00 0.00 0.00 0.00 41533.9 2899.7 218 0.1 44439 18.88 0.00 0.00 0.00 0.00 41526.2 2913,1 219 0.1 44445 18.88 0.00 0.00 0,00 0.00 41518.4 2926.4 220 0.1 44450 18.87 0.00 0.00 0.00 0.00 41510.4 2939.8 221 0,1 44455 18.87 0.00 0.00 0.00 0.00 41502.2 2953.2 222 0.1 44460 18.87 0.00 0.00 0.00 0.00 41493.9 2966.5 223 0.1 44465 18.87 0.00 0.00 0.00 0.00 41485.4 2979.9 224 0.1 44470 18.87 0,00 0.00 0,00 0.00 41476.8 2993.2 225 0.1 44475 18.87 0.00 0.00 0,00 0.00 41468.1 3006.6 226 0A 44479 18.87 0.00 0.00 0.00 0.00 41459,2 3020.0 227 0.1 44484 18.87 0.00 0.00 0.00 0.00 41450.2 3033.3 228 0.1 44488 18.87 0.00 0.00 0.00 0.00 41441.1 3046.7 229 0.1 44492 18.87 0.00 0.00 0.00 0,00 41431.9 3060.1 230 0.1 44496 18.87 0,00 GAO 0.00 OM 41422.5 3073.4 231 0.1 44500 18.87 0.00 0.00 0,00 0.00 41413.0 3086.8 232 0.1 44504 18.87 0.00 OM 0,00 0.00 41403.5 3100.2 233 0.1 44507 18.87 0.00 0.00 0.00 0.00 41393.8 3113.5 234 0,1 44511 18.87 0.00 0.00 0.00 0.00 41384.0 3126.9 235 0.1 44514 18.87 0.00 0.00 0.00 0.00 41374.1 3140.2 236 0.1 44518 18.87 0.00 0.00 0.00 0.00 41364.1 3153,E 237 0.1 44521 16.86 0.00 0.00 0.00 0.00 41354.0 3167.0 238 0.1 44524 15.86 0.00 0.00 0,00 0.00 413418 3180.3 239 0.0 44527 18.86 0.00 0.00 0.00 0.00 41333.5 3193.7 240 0.0 44530 18.86 0.00 0,00 0.00 0.00 41323.1 3207.1 241 0.0 44533 18,86 0.00 0.00 0.00 0.00 41312.7 3220.4 242 0.0 44536 18.8E 0,00 0.00 0.00 0.00 41302.2 3233.8 243 0.0 44539 10.86 0,00 0.00 0,00 0.00 41291.5 3247.1 244 0.0 44541 18.86 0.00 0.00 0.00 0.00 41280.8 3260.5 245 0 0 44544 18.86 0.00 0.00 0.00 0.00 4127G 1 3273.9 GAJ0BS)2D10N10013-PARKER VENTURES1calcW0013 Infiltration Trench Routing 10yr24hr -Half Infilt Rate (DENR) 6-18.12 Revised: 6118112 Parker Ventures ALG Stormwater Infiltration Trench Routing 10-year 24hr Storm HALF INFILTRATION RATE 3330 0.0 44632 16.21 0.00 0.00 0,00 0.00 133.9 44497.9 3331 0.0 44632 16,21 0.00 0.00 0.00 0.00 120.6 44511,2 3332 0,0 44632 16.21 0.00 0.00 0.00 0,00 107.2 44524.6 3333 0.0 44632 16.21 0.00 0.00 OM 0.00 93.9 44538.0 3334 0.0 44632 16.21 0.00 0.00 D.00 0.00 80.5 44551.3 _ - ?xx4!1632 - A a.Do s� a4ssa r; 3336 0.0 44632 J 16.20 0.00 0.00 0.00 0.00 53.8 44578.0 3337 0.0 44632 16.20 D.00 0.00 0.00 0.00 40A 44591.4 3338 0.0 44632 16.20 0.00 0.00 0.00 0,DO 27.0 44604,8 3339 0.0 44632 16.20 0.00 0.00 0.00 0.00 13.7 44618,1 3340 0.0 44632 16.20 0.00 0.00 0.00 0.00 0.3 44631.5 3341 0.0 44632 46.20 0,00 0.00 0.00 0.00 0.0 44644.9 3342 0.0 44632 16.20 0.00 0.00 0.00 0.00 0.0 44658.2 3343 0.0 44632 16.20 0.00 0DO 0.00 0.00 0.0 44671.6 3344 0.0 44632 16.20 0.00 0.00 0.00 0.00 0.0 44684.9 3345 0.0 44632 16.20 0.00 0.00 0.00 0.00 0.0 44698.3 3346 0.0 44632 16.20 0.00 0.00 OA0 0.00 0.0 44711,7 3347 U 44632 16.20 0.00 0.00 0.00 0.00 0.0 44725.0 3348 0.0 44632 16.20 0.00 0.00 0.00 0.00 0.0 44738.4 3349 0.0 44632 16.20 0,00 0.00 0.00 0.00 0.0 44751.8 3350 0.0 44632 16.20 0.00 0.00 0.00 0.00 0.0 44765A 3351 0.0 44632 16.20 0.00 0.00 0.00 0.00 0.0 44778.5 3352 0.0 44632 16.20 0.00 0.00 0.00 0.00 0.0 44791.8 3353 0.0 44632 16.20 0.00 0.00 0.00 0.00 0.0 44805.2 3354 0.0 44632 16.20 0.00 0.00 0.00 0.00 0.0 44818.6 3355 0.0 44632 16.20 0.00 0.00 0.00 0.00 0.0 44831.9 3356 0.0 44632 16.20 0.00 0.00 0,00 0.00 0.0 44845.3 3357 0.0 44632 16.20 0.00 0.00 0.00 0.00 0.0 44858.7 3358 0.0 44632 16.20 0.00 0.00 0.00 0,00 0.0 44872,0 3359 0,0 44632 16.20 0.00 0.00 0.00 0.00 0.0 44885.4 3360 0.0 44632 16.20 0.00 0.00 0.00 0.00 0.0 44898.7 10013 Ga10BS12010M013-PARKER VENTVRES%calcW0013 Infiltration Trenth Routing 10yr24hr -Half IJAA Rate 1DENRj Fit 8-12 Revised: 6118/12 Parker Ventures 10013 ALG 25 and 100 Year Storm Pipe and HGL Calculations LOCATION AREA RUNOFF RAIN INCREMENTAL TOTAL PIPE DATA COEFF. INT. FLOW FLOW SUB Q=CIA Q=CIA Q Friction Pond Rim FROM TO TOTAL TOTAL C I [C.F.S. [C.F.S. TYPE N LENGTH 5 % SIZE VEL. AVAIL. Loss [HQ Elev. 1InIetWS Elev, Elev. Acre (Acre inlhr) REQ'� REQ'D [ft pn f s (cfs {tt fi [tt) ft) 25 YEAR DI #7 DI #6 0A6 0.16 0.80 8.15 1.04 1.04 RCP 0.013 30 0.30% 15 0.9 3.55 0.0054 18.90 1 18.92 20.00 DI #6 Infilt Basin 0.14 0.30 0.80 8.15 0,91 1,96 RCP 0.013 19 0.50% 15 1.6 4.58 0.0120 18.90 18,92 20.50 DI #5 DI #4 0.19 0.19 0.80 8.15 1.24 1.24 RCP 0.013 170 0.30% 15 1.0 3.55 0.0430 18,90 19,20 20.30 DI #4 DI #3 0.24 0.43 1 0.80 8.15 1 1.56 2.80 RCP 1 0.013 70 0.30% 15 2.3 3.55 0.0908 1 18.90 19,16 19.80 DI #3 DI #2 0.08 0.51 0.80 8.15 0.52 3.33 RCP 0.013 73 0.30% 15 2.7 1 3.55 0,1332 18.90 19.07 20.20 DI #2 Infilt Basin 0.26 0.77 0.80 8.15 1.70 5.02 RCP 0.013 19 0,30% 18 2.8 5.77 0.0318 18.90 18.94 20.50 DI #1 Infilt. Basin 0.20 0.20 0.80 8.15 1.30 1.30 RCP 0.013 19 0.30% 15 1.1 3.55 0,0053 18.90 18.91 20.50 DI #13 Infilt Basin 0.12 0.12 0.80 8.15 0.78 0.78 RCP 0.013 19 0.30% 15 0.6 1 3.55 0.0019 18.90 18.90 20.50 DI #12 DI #11 0.30 0.30 0.80 8.15 1.96 1.96 RCP 0.013 152 0.3D% 15 1.6 3.55 0.0959 18.90 19-21 20.30 DI #11 DI #10 0.12 0.42 0.80 8.15 0.78 2.74 RCP 0.013 50 0.30% 15 2.2 3.55 0.0619 18.90 19.11 19.80 DI #10 DI #9 0,10 1 0.52 0.80 8.15 0.65 3.39 RCP 0.013 65 0.30% 15 2.8 3.55 0.1233 18.90 19,05 20.00 DI #9 Infilt. Basin 0.18 0.70 0.80 8,15 1,17 4.56 RCP 0.013 19 0.30% 18 2.6 5,77 0.0262 18.90 18.93 20.50 DI #8 Infilt. Basin 0.15 0.15 0.80 1 8.15 0.98 0.98 RCP 0.013 �El30% 15 0.8 3.55 0.0030 18.90 18,90 20.50 Centro! Struct. JB #1 1 0.00 1 0.00 1 0.80 1 8.15 1 1.31 1 1.31 1 RCP 1 0.013 1 - 103 1 0.30% 1 18 0.7 5.77 0.0117 16.00 16.03 20.80 JB #1 1 Pi a End 0.00 1 0.04 1 0.80 1 8.15 1 0.00 1 1.31 1 RCP 1 0.013 1 198 1 0.30% 1 18 0.7 5.77 0.0225 16.00 16.02 19.00 " See 25-yr Pond Routing Calculations for Outfall Flow "Assumes taiiwater condition in downstream "Exst. Ditch" is approximately flowing 25% full. G.UOBS201011D013.PARKER VENTURESvaICs110013 25 yr d 100 yr drain Apes 6 HGL 5-1$12 Revised: 6118112 Parker Ventures 10013 ALG 25 and 100 Year Storm Pipe and HGL Calculations LOCATION AREA RUNOFF RAIN INCREMENTAL TOTAL PIPE DATA COEFF, INT, FLOW FLOW SUB O=CIA O=CIA a Friction Pond WS Rim FROM TO TOTAL TOTAL C I {C.F.S. {C.F.S. TYPE N LENGTH S % SIZE VEL. AVAIL. Loss (Hp Elev.v. LE Elev. Acrej (Acre) (inlhrJ REQ'D REQ'D {ttJ {In (fps) (cfs fti (ft)J tt 100 YEAR DI #7 DI #6 0.16 0.16 0-80 9.60 1.23 1.23 RCP 0.013 30 0.30% 15 1.0 3.55 0.0075 19.20 19.23 20.00 DI #6 Infilt. Basin 0.14 0.30 0.80 9.60 1.08 2.30 RCP 0.013 19 0.50% 15 1.9 4.58 0.0166 19.20 19.22 20.50 DI #5 DI #4 0.19 0.19 0.80 9.60 1.46 1.46 RCP 0.013 170 0.30% 15 1.2 3.55 0.0597 19.20 19.62 20.30 DI #4 DI #3 0.24 0.43 0.80 9.60 1.84 3.30 RCP 0.013 70 0.30% 15 2.7 3.55 0.1259 19.20 19.56 19.80 Ol #3 DI #2 0.08 0.51 0.80 9.60 1 0.61 3.92 RCP 0.013 73 0.30% 15 3.2 3.55 0.1848 19.20 19.44 20.20 DI #2 Infilt. Basin 0.26 0.77 0.80 9.60 2.00 5.91 RCP 0.013 19 0.30% 18 3.3 5.77 0.0441 19.20 19.25 20.50 DI #1 Infilt. Basin 0.20 0.20 0.80 9.60 1.54 1.54 RCP 0.013 19 0.30% 15 1.3 3.55 0.0074 19.20 19.21 20.50 DI#13 Infilt. Basin 0,12 0.12 0.80 9.60 0.92 0.92 RCP 0.013 19 0.30% 15 0.8 3.55 0.0027 19.20 19.21 20.50 DI #12 DI #11 0.30 0.30 0.80 9,60 2,30 2.30 RCP 0.013 152 0.30% 15 1.9 3.55 0.1331 19.20 19.63 20.30 DI #11 DI #10 0.12 0.42 0.80 9,60 0.92 3.23 RCP 0.013 50 0.30% 15 2.6 3.55 0.0858 19.20 19.50 19.80 DI #10 DI #9 0.10 0.52 0.80 9.60 0.77 3.99 RCP 0.013 65 0.30% 15 3.3 3.55 0.1710 19.20 19.41 20.00 DI #9 Infilt. Basin 0.18 0.70 0.80 1 9.60 1.38 5.38 RCP 0.013 19 0.30% 18 3.0 5.77 0,0364 19.20 1924. 2050. DI #8 Infilt. Basin 0.15 0.15 0.80 1 9.60 1.15 1.15 RCP 0.013 19 0.30% 1 15 0.9 3.55 0.0042 19.20 19.20 20.50 Control Struct.1 JIB #1 1 0.00 1 0.00 1 0.80 1 9.60 1 4,88 1 4.88 RCP 1 0.013 103 0,30% 18 2.8 5.77 0.1626 16.25 16.73 20.80 JB #1 j Pipe End 1 0.00 1 0.00 1 0.80 1 9.60 1 0.00 1 4.88 RCP 1 0.013 198 0,30% 18 2.8 5.77 0.3126 16.25 16.56 1 19.00 See 100-yr Pond Routing Calculations for Outfall Flow "Assumes lailwater condition in downstream "Exs1. Ditch" is approximately [lowing 50% full. Pond Required Zone i for a 18" 5'x5'x18" Energy Dissipater Sizing (WXLxH) Minimum Provided Zone 1 for a 18" 5'x5'x18" G U08S12010510013-PARKER VENTURES1calcs11D013 25 yr & 100 yr drain pipea d HGL 6r18-12 NC DENR - DIVISON OF WATER QUALITY 2B .0300 .0311 CAPE FEAR RIVER BASIN Class Name of Stream Description Class Date Index No. Godfrey Creek From source to Harrisons C;Sw Creek Merricks Creek From source to Harrisons C;Sw Creek Catskin Creek From source to Merricks C;Sw Creek Trumpeters Swamp From souuce to Catskin Creek C;Sw Blossom Swamp From source to Trumpeters C;Sw Swamp Players Creek From source to Merricks C;Sw Creek Island Creek From source to Northeast C;Sw Cape Fear River Old Creek From source to Northeast C;Sw Cape Fear River Sturgeon Creek From source to Northeast C;Sw Cape Fear River Northeast Cape Fear River From Prince George Creek to C;Sw mouth of Ness Creek Prince George Creek From source to Northeast C;Sw Cape Fear River Turkey Creek From source to Northeast C;Sw Cape Fear River Long Creek From source to Northeast C;Sw Cape Fear River Horse Branch From source to Long Creek C;Sw Pole Branch (Penderlea Lake) From source to Horse Branch C;Sw Keith Branch From source to Long Creek C;Sw Cypress Creek From source to Long Creek C;Sw Bee Branch From source to Cypress Creek C;Sw Mill Branch From source to Long Creek C;Sw Big Branch From source to Long Creek C;Sw Jumping Run Branch From source to Long Creek C;Sw Mill Branch From source to Long Creek C;Sw Mulberry Branch From source to Long Creek C;Sw Mill Run From source to Long Creek C;Sw Rileys Creek From source to Long Creek C;Sw Rizzo Creek (Resce Creek) From source to Rileys Creek C;Sw Birch Creek From source to Rizzo Creek C;Sw Mill Creek From source to Rileys Creek C;Sw Kellys Creek From source to Rileys Creek C;Sw Guffords Branch From source to Rileys Creek C;Sw Juniper Branch From source to Long Creek C;Sw Mill Creek From source to Long Creek C;Sw Collins Branch From source to Mill Creek C;Sw Morgans Creek From source to Long Creek C;Sw Cowpen Branch From source to Northeast C;Sw Cape Fear River 09/01/74 18-74-49-1 07/01/73 18-74-49-2 09/01/74 18-74-49-2-1 09/01/74 18-74-49-2-1-1 09/01/74 18-74-49-2-1-1-1 09/01/74 18-74-49-2-2 07/01/73 18-74-50 04/01/59 18-74-51 09/01/74 18-74-52 09/01/74 18-74-(52.51 07/O1/73 18=74-53 04/01/59 18-74-54 07/01/73 18-74-55 09/01/74 18-74-55-1 09/01/74 18-74-55-1-1 09/01/74 18-74-55-1-2 04/01/59 18-74-53-2 04/01/59 18-74-55-2-1 04/01/59 18-74-55-3 04/01/59 18-74-55-4 04/01/59 18-74-55-5 04/01/59 18-74-55-6 04/01/59 18-74-55-7 04/01/59 18-74-55-8 07/01/73 18-74-55-9 09/01/74 1B-74-55-9-1 09/01/74 1B-74-55-9-1-1 09/O1/74 18-74-55-9-2 09/01/74 18-74-55-9-3 07/01/73 18-74-55-9-4 04/01/59 18-74-55-10 04/01/59 18-74-55-11 04/01/59 18-74-55-11-1 09/01/74 16-74-55-12 04/01/59 18-74-56 Page 57 oF69 1- 30 OJ%1:3`312 MyTopo Map Print Page 1 of 1 s r �• f J , f ,� t� ;r�:., �� r �� �Ri,�+" �- yijs5'� Rt. 7,; ' a 1 P 5 fd i t;C � SRTI i .fir' f { a• 'F .�a,S't \ � F�!•sF ,a..'t, rz'd'.TF F S. �'i: / fj t` �';"L gFd 3,� sFt"�° '�.Ir t 4�� � � '" ��r�[ w�c �>-7. 3•z�}i '�."sa y_ -5 YwS,f� ~'7 4 -..e:~ VV .jl r' -"�t+. .'e�'r���C,..� �x �•�R y ��t V � �,+f ^�'rr t y.)s'ixrt� V iy � ,�����i. r a'�+► �p HS r ai 11 i eSdr t SU1},}14 f.4�?•ilkb}'r�Y 3��fK;�i+e,�'t' ,� ti� �- ��;,4\f>•,:r-,mow, \.t�! •t �� �. ��i1 •FiM r'�y,�! +I (({({rye�4. \, r - �� # • ;e ) .J �f ��Es, ,r. ti ria:. f*' �; � � ,:Swt(Iw�•4 ���: I 'G v/f f+,� _ n yrs-.• - r� -.5 'k j y -.` + r f x 'r fe � l i '�. 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L a'� -yr.i � w � `(.-s_LJ'�. r 1)- v f; ✓'�^.'.'.7.. ,f .f:., /:''° ll7n, w .r.. � :.�l _�LY:1 a.. �r•`n..;, 7 i -�=, a ri N A Q 0.5 Mi o z000 Ft Map provided by My7opo.com "ECEIV , MAR 2 8 2012 BY:_ http:llmap-pass. mytopo.com/maps/print_mytopo.asp?print=20&scale=5&layei---DRG&laye... 1/3/2012 ti STORMWATER SUBMITTAL REQUIREMENTS INFILTRATIONIEXFILTRATION SYSTEMS Basins and Trench Objective A. Collect all runoff from all BUA (proposed and/or existing and/or offsite) as the case may be, by any means including piping or swales, and direct it to the infitration system. B. Check the proposed basin/ trench design to make sure it meets or exceeds the minimum design criteria for design storm, volume and drawdown. II. What makes up a complete infiltration basin / trench application package? Two sets of sealed, signed & dated layout & grading plans with appropriate details. Completed application (SWU-101) with supplement(s), SW-401-Infiltration Basin, SW-401- Infiltration Trench, SW-401-Level Spreader, and inspection and maintenance agreements. A.,C Deed restriction document, if applicable. (subdivisions & projects with out parcels) .-D. Sealed, signed & dated calculations. iE" A soils report containing information in regard to the soil type, boring locations, seasonal high water table elevation and expected infiltration rate. III. BIMS entry (for DWQ use only) Enter & track application acknowledged date, review date, add info requested/received dates, permit issue dates, and drainage area and stream/waterbody info. Best done after the add info letter is written and before sending permit up for signature. IV. Shell documents (for DWQ use only) Permit shells: s:lwqslstormwaterlshelilshighcominbasin S:Iwgslstormwaterlshellslhighcomintrench s:lwqslstormwaterlshellslhighsubinbasin s:lwqslstormwaterlshellslhighsubintrench Calculations: s:lwgslstormwaterlexcel spreadsheetslinbasin s:lwgslstormwaterlexcel spreadsheetslintrench V. Review Procedure- look for consistency between the various elements of the package- application, plan and calculations. A. APPLICATION Original signatures are required. Photocopied signatures cannot be accepted. VZ' A completed infiltration basin or infiltration trench supplement, one for each proposed system. A signed, dated and notarized Inspection and Maintenance Agreement for each proposed system with an original signature. Q3 The elevations, areas and volumes reported on the supplement match up to the numbers used in the calculations and shown on the plan details. i Built -upon areas are reported in square feet in Section 111.9. 1�5. Receiving stream name and classification. •—$. Section 111.9 is filled in -cannot be left blank. One column must be filled in for each proposed infiltration basin or trench. If the applicant is a corporation, partnership or LLC, look it up on the Secretary of State Corporations Database. Make sure corporation is spelled correctly (capitalization and punctuation matter) and that the person signing the application is at least a vice- president in the corporation, a General Partner in the partnership, a member in a member -managed LLC, or the manager of a manager -managed LLC. Need documentation to support if the Articles of Incorporation do not list the members or managers of the LLC. If an agent signs, then a letter of authorization is needed from the president, vice president, general partner, member or manager. For subdivided projects, a signed and notarized deed restriction statement must be provided. v9. Soils report with the SHWT, Soil type and expected infiltration rate. Page 7 of 12 iw Infiltration Basin & Trench, cont. LCULATIONS The basin or trench must draw down within 5 days. Spray irrigation is not acceptable as the sole means of drawdown. /2. For sites with high infiltration rates, the maximum infiltration rate to use for the design is10 in/hr, per Vincbl�_"ilf gwis. •!3 The design storm the project is subject to Phase II or is sited within'/ mileof and draining to SA waters. Otherwise, use 1" design storm. �4! For Phase II projects that are within'/2 mile of and draining to SR waters, the difference in runoff from the predevelopment and post -development conditions for the 1 year 24 hour storm must be controlled and treated. Report the bottom surface area. Report the surface area at the overflow elevation. 7 Show the calculation for the minimum required volume. Provide a table of elevations, areas, incremental volumes and accumulated volumes to demonstrate that the minimum required volume has been provided. Calculations are signed, sealed & dated. ✓ir0. Report the Drainage Area and Built -upon area for each basin or trench. 0,1' The seasonal high water table must be at least 24" below the proposed bottom elevation of the system. For Phase II projects, at least 12" of this must be in naturally occurring soils. All runoff in excess of the design storm must bypass to a vegetated filter prior to entering the basin or trench. If the system is designed to store a larger design storm (generally 2- 3 times the minimum), the requirement for an offline bypass can be waived. Please contact the Division to determine what design storm is appropride for the project. S:IWQSISTORMWATERIFORMSICHECKLIST Page 8 of 12 Infiltration Basin & Trench, cont. C. PLANS - Plan sheets should be kept to a minimum. For small commercial single basin projects, the plan set could consist of only 2 or 3 sheets, layout, grading and details. For larger projects, show as much information as possible on as few sheets as possible, without cluttering them up. Development/Project Name Engineer name and firm. -T Legend ✓4. North Arrow Location Map with nearest intersection of two major roads shown. Major road is any 1, 2, or 3 digit NC, US or interstate highway. Scale- standard engineering scale, no off-the-wall stuff. Date 9. Revision number and date, if applicable. Original�rontours�Sroposed contour$4pot elevatio inished floor elevation pipe inverts, Swale inverts, etc. 410. Existing drainage (piping, swales, ditches, ponds, etc.), including off -site. Include a map delineating the offsite drainage areas. 1 Property/Project boundary lines, bearing & distances. Mean High Water Line or Normal High Water.Line, if applicable. 1 Drainage easement locations shown on the plans along with their width. Wetlands delineated, or a note on the plans that none exist. Provide a copy of the wetlands delineation map signed by the Corps of Engineers, or contact the appropriate field rep for the Corps to see if they can email a statement regarding the status of the delineation. Infiltration systems may not be located in wetlands. 1 Details for the roads, parking, cul-de-sacs, including sidewalk width, radii, dimensions & slopes. ..IT Apartment 1 Condo development- provide a typical building footprint with dimensions, 17 and note all concrete and wood deck areas. The drainage area for each basin or trench is clearly delineated and numbered to match up to the calculations and supplement. Drainage area delineation is best done as a separate plan sheet. 18. A basin section detail showing bottom and storage elevations, . The side slopes of an infiltration basin are not restricted to vegetation. They may be hardened with rock, timber, concrete, decorative brick, etc. 19. A trench section detail with the perforated pipe diameter, filter fabric wrapped around the pipe and around the trench, trench height and width, rock fill type. 20 If using a pre-fab chamber -structure, provide details of the chamber, including model #, leer gth,,width, chamber v ume and number of used. A bypass s rructure detail -is -provided showing quare openings, and the necessary bypass weir or pipe elevation. Several types of bypass structure designs are acceptable. V�� �2. Dimensions for each line and arc formed by the bottom contour of an infiltration basin. All runoff in excess of the design storm must pass through a vegetated filter prior to V/ �~ �qr nD � beingdischarged into the receivingstream. The filter must be 50' Ion for SA waters and g 30' lng for non -SA waters. ✓``' All infiltration systems must be located at least 50' from the MHW line of surface waters. ,5 Vegetation is specified for basin slopes not being hardened. Weeping Love Grass is not suitable as a permanent vegetated cover for side slopes. All roof drainage must be directed to the system. Show the roof drain collection piping on the plans. This is especially necessary for projects where the buildings back up the property lines where roof drainage may leave the site prior to going through the system. 1 Monitoring wells may be required on a case -by -case basis. Page 9 of 12 Com leteness Review Checklist Project Name: Received Date: 7as fQ'&"A- --a'A Project Location: Accepted Date: Rules) 2008 Coastal E11995 Coastal Phase II (WiRO) Universal 1-11988 Coastal Type of Permit: New or Mod or PR Existing Permit # (Mod or PR): FiPE Cert on File? Density: or LD Type: LO mercia or Residential �NCG: %: .... 0(% 00) Stream Class: 7(:�� EISA Map F—]Offsite to SW8 Subdivided?: Subdivision or inele L t MORW Mao nExempt Paperwork Emailed Engineer on: ED-%pplement(s) (1 original per BMP) BMP Type(s):1�Crrt+-TP,4ritOn� �RENCH _ &M with correct/original signatures (1 original per BMP except LS/VFS and swoles) 0 plication with correct original signatures Corp or LLC: Si P.DAu er SoS or letter Note to Reviewer: q la505 (within 6mo) �>n�tn V%V)C. S 1&0 oil s s Report with SHWT t [DLa� lculations (signed/sealed) - V \'(sCC �3 \�� V1fj c L4 15 11 nNo obvious errors nsity includes common areas, etc Deed Restrictions, if subdivided: igned & Notarized orrect Template (Comm/Res & HD/LD1 or Plans pets Details (roads, cul-de-sacs, curbs, sidewalks, BMPs, Buildings, etc) Grading Wetlands: Delineated or No Wetlands Vicinity Map 1-1 Layout (proposed BUA dimensions) Legend FTA Maps Project Boundaries Infiltration Wet Pond Offsite oils Report Soils Report OPE Cert for Master Lot ft.- SHWT ` .11 0 SHWT: Deed Rest for Master Lot # Matches Master Bottom: 1(0.aO PP: BUA Permitted (Master): sf Visited: 4/ BUA Proposed (Offsite): sf Additional Information: Permitted BUA (sf) DA (sf) PP (el) SHWT (el) Depth (ft) SA (sf) Proposed: Pro sed: ,,, December 28, 2011 Tripp Engineering, P.C. 411 Chestnut Street Wilmington, North Carolina 28401 Attention: Mr. Lee Galloway Reference: Infiltration Testing and Seasonal High Watertable Estimate Parker Ventures, Inc. US Highway 1.17 Castle Hayne, North Carolina RFTS .lob No. 705-11 Dear Mr. Galloway: RFTS is pleased to provide testing services during the design phase of the Parker Ventures, Inc. project located near the intersection of US Highway 117 and Hickory Street in Castle Hayne, North Carolina. Specific site grading plans had not been provided to us at the time this report was prepared. DESCRIPTION OF ACTIVITIES AND FINDINGS As requested, our staff visited the site on December 16, 2011,.to perform infiltration testing and estimate the seasonal high watertable level at one Iocation in the area proposed for an infiltration basin. The purpose of this testing was to provide soil parameters for stormwater infiltration design. Seasonal High Watertable Estimate A hand auger boring was advanced to a depth of approximately 9 feet below the existing ground surface in the proposed area. The encountered soils were logged and visually classified by depth and a Munsell Soil Color Chart was used to determine the hue, value, and chroma of the visually distinct soil layers. Our soil logs are presented inTable 1. Soils encountered at this boring location consisted of interbedded relatively clean sands (USCS Soil Groups `SP' and `SP-SC') in the upper 80 inches below the ground surface, and was underlain from 80 to 93 inches with sand with clay (USCS Soil Group `SC'). From 93 inches to the boring termination depth of 111 inches clean sands (USCS Soil Group `SP') were again encountered. Comparison of the soils to the Munsell Chart suggests the presence of a zone of aerated soils approximately 64 inches below the ground surface indicative of a seasonal high water level. No groundwater was encountered at the boring location through the depth investigated. RFTS, PLLC Committed to Responsive Service Phone:910.470-7450 1305 3A Carolina Beach Ave N Carolina Beach, Norlh Carolina 28428 :vwzu.rftsp11c.co7n Email:davidwinsteed0chaftef.nat Tripp Engineering, P.C. RFTS Job'No. 705-11 Infiltration Testing December 28, 2011 Page Two Infiltration testing was performed using a model 2800 Guelph Permeameter which is a constant -head device which operates on the Mariotte siphon principle and is referenced in ASTM D-5126. The penmeameter is used to determine field saturated hydraulic conductivity in centimeters per second for soil at a specified depth. This testing involves advancing a borehole to the desired infiltration depth and introducing water at a constant head to determine the steady state flow rate from which the hydraulic conductivity can be calculated. No specific depth for testing was required; however, our testing was performed approximately 30 inches below the existing ground surface, approximately 34 inches above the seasonal high water level estimate. The results of our permeameter testing are presented.in Table 2. RECOMMENDATIONS Based on the results of our field testing and soil classifications at the test location, we offer the following recommendations for stormwater infiltration design: At test location INF-1, it is our opinion that in order to achieve the steady state flow rate obtained during. our testing; the areas of infiltration galleries or other infiltration structure should introduce stormwater at approximately 30 inches below the existing ground surface elevation. For purposes of sizing the structure werecommend an ultimate application rate of 1.23 inches per hour. These recommendations should be reviewed by appropriate regulatory authorities before finalizing the details of any civil design. CLOSURE Please find attached our field data and a sketch showing the approximate test locations. If you have any questions after reviewing this letter, please do not hesitate to contact us at your convenience. Sincerely, RFTS, PLLC11 L '--i L.. David-L. Winstea Field Operations Manager DLW:SDK/dlw Attachments Steven P.E. Senior Engineer NC Registration o. 17638 n +µ.id.. �99•!;q•�ri;*. y * 176380. (.0 w, , Py C4•� •+a�aO��V��� Table 1 Munsell Soil Classifications Parker Ventures; Inc. US Highway 117 Castle Hayne, North Carolina RIFTS Job No. 7 05 -11 Loc Soil Description Hue Value Chroma Depth ; Comments (in 1 _ 1Nf=-1 i ABC Stone - 0-9 - Pale Yellow tine to medium 2.5Y 7 3 9-27 SAND _...._.. i Pale Yellow and Brownish 2.5Y/I0Y 7/5 3/8 27-4Q low t t..,,._.�_..._,.....Ie - ---—. - _ •--- ; �. ..� ,,, i Pale Yellow fine to 25 Y 7 4 40-45 i SAND.medium--_ - { Yellowish Brown fine to I OYR 5 4 45-54 1 mediumSAND j i Pale Yellow fine to medium 2.5Y 8 4 _ 1 ` SAND Fight Gray fine to medium 2.5Y 7 i 2 64-72 ? SHWT SAND f - _..._ ....: Brownish Yellow fine to IOYR 5 8 72-80 i 1 medium SAND, trace of Clay Light Gray and Brownish 2.5Y/1 OY 7/5 2/8 80-93 i Yellow fine to medium SAND, R withclay. --w , White fine to medium SAND 2.5Y 8 1 93-1 I 1 No FhO 1 EGET& OR 2 8 24t2 t3v: Table 2 Guelph Permeameter Test Results Parker Ventures, Inc. US Highway 117 .Castle Hayne, North Carolina RFTS Job No. 705-11 Location -- ( INF-1 ? Depth (in)_.. Ri (cm/min) ._ _ w 3.6 -} i RIs (cm/sec),, + 0.06 ; 2() 10 . R cm/min) ' - 4.4 Res (cm/sec) --0.073 Y Kis (cmisec) 8.70x] 0 K mlhr ;.__..._.1.23 v (1),_(cIn/sec) 0.060 �; 0.015 .._, Definition of Terms RI,2 —.Established 3 or more constant rate of water level change (cm/min) Ris, 2s — Calculated steady state flow rates (cm/sec) HE,2 — Maintained Head of H2O (cm) Kfs -- Calculated field saturated hydraulic conductivity (cm/sec) (D,, — Matric flux potential (cm/sec) a — Alpha parameter Depth — Depth of well hole (in.) Location — Test location identification number Note:'Diameter of well is 3.0 cm. i i i i i i EXISTING i BUILDING INF-1 i e I i 1 I I i I I I I I I 2 I D i � I m rFl 1 � I I I I US HIGHWAY 117 s i7 O m Legend e APPROXIMATE TEST LOCATION INFILTRATION TESTING AND SHWT ESTIMATE FIGURE 1 PARKER VENTURES, INC. DRAWING NOT TO SCALE RFTS, PLLC 1305 3A Carolina Beach Ave N US HIGHWAY 117' DATE: 12128199 PTS Carolina Beach, North Carolina 28428 Soils Engineering and CASTLE HAYNE,. NORTH CAROLINA SKETCH: DLW Office: 910-470-7450 Testing Services JOB NO, 705-11 REVIEW: SDK