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Home My WebLink AboutSW8050558_COMPLIANCE_20050902STORMWATER DIVISION CODING SHEET POST -CONSTRUCTION PERMITS PERMIT NO. SW DOC TYPE ❑ CURRENT PERMIT ❑ APPROVED PLANS ❑ HISTORICAL FILE COMPLIANCE EVALUATION INSPECTION DOC DATE YYYYMMDD INFILTRATION TRENCH ANALYSIS Filename: S:IWPDATAIWQSIINTRENCH1050558 Project # SW8 050558 Date Project Name Seaside Landing Reviewer Recvng Stream ICWW Classification Drainage Basin Lumber River Index # Site Area 4.08 acres Drainage Area Stormchamber Units: 86 @ 34.04 H x 60" W x 102.5" L. 10 cu fULF, ends 8.1' L. middle, 7.6'L; 115 cu ftlunit Impervious Area Calculation Buildings 19712 Streets 53214 Concrete 2152 other OS 2870 Total a7g4$ Volume/Storage Calculation If Rational Method is used, place a 1 in this box 0 Required Provided Design Storm RV Volume to Store Pipe "Diameter" Length Of a Single run of Pipe Number of Pipe Runs in Trench Storage In Piping Total Storage in Piping Cross -Sectional Area Of Pipe Runs Length Of Trench (add r'@ea. End of pipe ra Width Of Trench . Height Of Trench (incl 0.5 below chamber) Cross -Sectional Area Of Trench Voids Volume, 40% Total Voids Volume Total Volume Provided vs. 115 cu ftlunit * 86 units = Elevation Of Bottom Of Trench Elevation Of SHWT Overflow Elevation Exfiltration Rate /Drawdown Reported Hydraulic Conductivity Bottom Surface Area Drawdown Time 25 YEAR 24 HOUR STORM NIA Intensity, i = .33 inches 1 hour Qr=CiA= Qp through the bottom of the basin= 10 YEAR 10 MIN HIGH INTENSITY EVENT Intensity, i = 6.3 inches I hour Volume for 10 yr. 10 min. event = 02-Sep-05 P.Bartlett SA; HQW 15-25 177,681 SF 4.08 Acres Rational Cc (list C after each BUA) 0.95 0.95 0.95 0.95 % Impervious: Cc: 0.51 1.5'in 0.44 €884 CF Pipe Size 1 I Pipe Size 2 43.9% 3.57 Feet 623.9 Feet 1 each 6245 0 Cubic Feet Cubic Feet 10.010 0.000 SF 635.9 Feet 6.17 Feet 3.83 Feet 23.63 0.00 SF i €:i33g9i 9fi44 0.69 CFS 0.5177 CFS CF CF Cubic Feet 9890 cu ft 10 Mean Sea Level 7.5 Mean Sea Level 13.83 Mean Sea Level 0.475 Cubic Feet Per Hour Per Sq Ft 3923.503 Square Feet hours 7920.19 CF < Must be > Qr 9644 CF INFILTRATION $ITE V151I REQUES Name of the Project: .Staside. f-Md;45 Location (attach a clear vicinity map): '7276 $wh &Il 1- .. SW Ocew Lt. $cfcl,., N c 21 J Street address, SR number, community, etc. Directions from the nearest major intersection: JAVe rj So%A.'h oh t)S-t],JIMn Uf+ ohi NCAOLA, CQ A t a Cmsi 6n%u, ioMim�i_w c,��n�►ru,� d�w�n Sen.*:�r [i� ISR H61. un�i1��-c� rr►�►s ,,,s,� i4w_ lr��, _�� v�w+Iwi�� a - Owner/Applicant Name:,,,,,„,,��Y�>nd� Consultant Name: L.,&VaA"ixV► i 'Ats caotts Consultant Contact Information:_ Clio) 351: yV b2 44, t I°� 34?r'ib11 �iuc. -�'bt ��_u�wnw�ka+t •� a Phone, fax, email, $to. 61 #1 #2 #3 #4 _ #5_ . #6 #7 #8 Existing ground elev. @basinitrench= I a.5 Bottom Elev. of infiltration basinitrench= 19.0 Existing ground minus bottom elev.= 3, S Add 2' (max..b ion)= -7XS 5 Date/Time of Soils Investigation : 7bes 14pr,I-2a)5 Pe-9--ked, Summary/Comments: W _0f 6r- f ohle oYable m S . - D& t< {ivo erov_s le f_ a `C Q 45 i f�� ' Lai 4 (•Q r rs / a !' �' `� 2-161 / m, as hek _k �4 e 4 1 1Ue Lvg c, I All proposed infiltration areas and existing, active utility lines located withirrthe proposed basin/trench must be marked and flagged. If these areas are not flagged, the Soils Scientist reserves the right to decline to do the investigation. If the proposed infiltration system will be located in an area of existing paverment and there is no open area nearby, equipment capable of breaking through the Impervious layer must be provided. The'soils investigation does not take the place of a soils report prepared by an appropriate professional. The Soils Scientist will only verify the soil conditions that are reported in the Soils Report, and make a determination as to the suitability of the site to meet the infiltration design requirements under NCAC 2H.1000, and assumes no liability should the system fail. zd WUGZ :01 s00z 80 ._idd ZT9b2620TS : 'ON Xbd SEUMOSSd2 HnnUNUAUD : WOHA Seaside Landing Brunswick County INFORMATION COASTAL MINI STORAGE LATITUDE: 33" 53' 21" N LONGITUDE- 78° 29' 8.4° W QUAD: SHALLOTTE, N.C. STREAM CLASS: SA; HOW RECEIVING WATER: ICWW North Carolina LOCATION NOT TO SCALE 2d Wd62:m s00z 80 'add zT9b262016: 'ON Xdd S31dI3❑SSb2 H95UNUnb❑: w❑bd CAVANAU G H Solutions through integrity and partn¢rzhip CAVANAUGH & ASSOCIATES, P.A. Consuiting Engineers 130 North Front Street Sufte 202 Wilmington, North Carolina 26401 (910) 392-4462 Fax (910) 392-4612 Facsimile Cover Sheet To: Company: 1Vc. DEnlR Fax Number: ��ta ) ; 5 2 -- 0 y From: 4 Date: 4 /i/c-s Project Number: Phase ## No. of Pages (Including Cover): 3 Comments: Zd Wt162:01 S002 90 '"du ZT9b2620T6: 'ON XHd SSIHIOOSSH2 HonbNHIIHO: W06A