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Home My WebLink AboutSW8000415_COMPLIANCE_20010601STORMWATER DIVISION CODING SHEET POST -CONSTRUCTION PERMITS PERMIT NO. SW DOC TYPE El CURRENT PERMIT ❑ APPROVED PLANS ❑ HISTORICAL FILE COMPLIANCE EVALUATION INSPECTION DOC DATE _;2_ j l YYYYMMDD ❑Kimley-Horn and Associates, Inc Transmittal Date June 15, 2001 To Linda Lewis SUN 19 2001 Job No 018051002 and 018051001 DENR - Environmental Engineer Wilmington Regional Office 127 Cardinal Drive Wilmington, NC 28504-3845 P O Box 33068 Raleigh North Carolina 27036 9068 TEL 919 677 2000 FAX 919 677 2050 We are sending you ® Attached Under separate cover via the following items j] Shop Drawings n Prints/Plans n Samples ❑ Specifications n Change Orders Other Copies Date No Description These are transmitted as checked below M For your use n Approved as submitted n Resubmit n Copies for approval n As requested n Approved as noted n Submit f Copies for distribution 171 For review and comment n Returned for corrections n Return n Corrected prints RemarksLinda - If you have any questions regarding the summary for our site visit to Marsh and Copy to Klmley-Horn and Associates, Inc June 14, 2001 Ms Linda Lewis Environmental Engineer State of North Carolina Department of Environment And Natural Resources Wilmington Regional Office Stormwater Project No.'s SWS 000415 & SW8920522MOD (Ocean Harbour & Marsh Harbour) Dear Ms Lewis, ■ P 0 Box 33068 Raleigh, Narth Carohna 27636 3068 Attached you will find two (2) tables that summarize our findings on June 13, 2001 for infiltration basins associated with the Ocean and Marsh Harbour projects The table lists infiltration basin numbers and their corresponding bottom elevations, existing ground elevations, groundwater table elevations and any proposed modifications to the original design Per our discussion during the site visit we will be incorporating your recommendations into our redesign of Marsh Harbour basins 3, 4, 6, 7, $, 9 and 13 All three Ocean Harbour infiltration basin locations and elevations were verbally approved as submitted based upon field observations of soil samples Thank you again for your efforts and cooperation on this project If you have any concerns or questions or if additional information is needed, please do not hesitate to call me Since �ely, a•■� Harlan Britt, PE Cc Don Safrit, P E ■ TEL 919 677 2000 FAX 919 677 2050 RESORT LADANE - OCEAN HARBOUR RESORT LADANE - MARSH HARBOUR BOTTOM 1NATER EXISTING ELEVATION O SURFACE GROUND PROPOSED MODIFICAbTION BASIN # ELEVATION ELEVATION BASIN REQUIRED ACTIO PROPOSED 1 >2' below bottom 46 40 N 2 >2' below bottom 24 22 N 3 undetermined 12 10 Y Infiltration basin will be replaced with a sand filter 4 445 48 46 Y Infiltration basin will be raised and widened 5 52' below bottom 49 46 N 6 465 50 475 Y Infiltration basin will be raised and widened 7 undetermined 245 205 Y Unsuitable soils will be excavated and replaced with suitable sods 8 undetermined 245 205 Y Unsuitable soils will be excavated and replaced with suitable sods 9 undetermined 245 205 Y Unsuitable soils will be excavated and replaced with suitable sods 10 445 48 47 N 11 445 48 47 N 12 undetermined" 44 41 undetermined 13 undetermined 26 255 Y Unsuitable soils will be excavated and replaced with suitable sods Sample was unable to be retrieved due to soil conditions It is our understanding that Vincent with NCDENR will take sample on July 9th Project Name Location 02126 " r7cf DIVISION OF WATER QUALITY 2 3 4 INFILTRATION SYSTEM INVESTIGATION The minimum bore depth :# 1 # 2 03 Existing ground elevation 193 d 2.526 Proposed Bottom elevation /2, 5 Add 2' +2 +2 +2 Depth The type of soil SZsI The expected infiltration rate +2 The depth to the Seasonal High Water Table #0- q -#z - ¢ # 3 - Rq 5- S Additional comments # 3 OIL 1- 1 OIL -f� 2 CAI G Signature of Regional Office Personnel Linda Lewis, DWQ Pcrmit Application No Vincent Lewis, Soil Scientist SW ow415 Date S 1WQSISTORMWAT7ORMS1INFlNVST FOR STORMWATER CALCULATIONS RESORT LADANE - OCEAN HARBOUR s C+fir a e t 7^ who '1 A INFILTRATION BASIN ANALYSIS DATE 17-Sep-2001 PROJECT NAME Ocean Harbour DRAINAGE BASIN Lumber RECEIVING STREAM Calabash River Index No 15-25-5 SITE AREA 215 27 acres IMPERVIOUS AREA CALCULATION BUILDINGS PARKING/ASPHALT CONCRETE SIDEWALKS OTHER % IMPERVIOUS, I= ELEVATION OF SEASONAL HIGH WATER TABLE REPORTED INFILTRATION RATE SURFACE AREAS AND ELEVATIONS Elegy (ft) Area BOTTOM 125 STORAGE 14 FILENAME S 1WQS11NBASIN1000415-1 WK1 PROJECT # 000415-1 Basin 1 REVIEWER arl CLASS SA If ORW, is site within the 575' AEC? n/a DRAINAGE AREA 8 4 5 -0- -71 SF AREAS C & D 36591 SQUARE FEET 20473 SQUARE FEET 1133 SQUARE FEET SQUAREFEET TOTAL 58197 SQUARE FEET RV= 05+ 009 (1 ) = I 67 10 FEET MSL 0 15 jCF/HR/SF 5179 SQUARE FEET SQUARE FEET SQUARE FEET 6874 SQUARE FEET VOLUME / DEPTH / DRAWDOWN CALCULATION DESIGN STORM, INCHES DESIGN VOLUME TOTAL VOLUME AVAILABLE DEPTH OF RUNOFF TIME TO DRAWDOWN 15 7075 CUBIC FEET 9040 CUBIC FEET FEET 11 6 HOURS MUST BE <120 COMMENTS Volume and drawdown are (not) within Design Requirements INFILTRATION BASIN ANALYSIS DATE 17-Sep-2001 PROJECT NAME Ocean Harbour DRAINAGE BASIN Lumber RECEIVING STREAM Calabash River Index No 15-25-5 SITE AREA 215 27 acres IMPERVIOUS AREA CALCULATION BUILDINGS PARKING/ASPHALT CONCRETE SIDEWALKS OTHER % IMPERVIOUS, I= _.........64 6% j ELEVATION OF SEASONAL HIGH WATER TABLE REPORTED INFILTRATION RATE SURFACE AREAS AND ELEVATIONS FILENAME S 1WQS11NBASIN1000415-2 WK1 PROJECT # 000415-2 Basin 2 REVIEWER arl CLASS SA If ORW, is site within the 575' AEC? nla DRAINAGE AREA 43749 SF AREAS C & D 25701 SQUARE FEET 64353 SQUARE FEET 2858 SQUARE FEET SQUARE FEET TOTAL 92912 SQUARE FEET RV= 05+ 009 (1) = Iq3 4 FEET MSL 015 CFIHRISF Elegy (ft) Area BOTTOM 8 5250 SQUARE FEET SQUARE FEET SQUARE FEET STORAGE 10 8214 SQUARE FEET VOLUME 1 DEPTH 1 DRAWDOWN CALCULATION DESIGN STORM, INCHES DESIGN VOLUME TOTAL VOLUME AVAILABLE TIME TO DRAWDOWN 11351 CUBIC FEET 13464 CUBIC FEET 2,00 FEET 17 1 HOURS MUST BE <120 COMMENTS Volume and drawdown are (not) within Design Requirements INFILTRATION BASIN ANALYSIS DATE 17-Sep-2001 PROJECT NAME Ocean Harbour DRAINAGE BASIN Lumber RECEIVING STREAM Calabash River Index No 15-25-5 SITE AREA 215 27 acres IMPERVIOUS AREA CALCULATION BUILDINGS PARKING/ASPHALT CONCRETE OTHER % IMPERVIOUS, I= 1 49 0% ELEVATION OF SEASONAL HIGH WATER TABLE REPORTED INFILTRATION RATE SURFACE AREAS AND ELEVATIONS Elegy (ft) Area BOTTOM 22 STORAGE 24 FILENAME S 1WQS11NBASIN1000415-3 WK1 PROJECT # 000415-3 Basin 3 REVIEWER arl CLASS SA If ORW, is site within the 575' AEC' n/a DRAINAGE AREA F- 148540 SF 21780 SQUARE FEET 17424 SQUARE FEET 4356 SQUARE FEET 29185 SQUARE FEET TOTAL 72745 ISQUARE FEET RV= 05+ 009 ( I ) = 1 0 49 19 5 1 FEET MSL 0 15 CF/HR/SF 4185 SQUARE FEET SQUARE FEET SQUARE FEET 5990 SQUARE FEET VOLUME / DEPTH / DRAWDOWN CALCULATION DESIGN STORM, INCHES DESIGN VOLUME TOTAL VOLUME AVAILABLE DEPTH OF RUNOFF TIME TO DRAWDOWN 15 91 12CUBIC FEET 10175 ICUBIC FEET 2 00 FEET 16 2,JHOURS MUST BE <120 COMMENTS Volume and drawdown are (not) within Design Requirements CoI,Kimley Horn and Associates Inc Infiltration Basin #1 (I-B #1) Project Information Project Name Ocean Harbour -Resort LaDane KHA Project # 1805102 Designed by OJP Checked by DLS Date 6111 /01 Date 6/11 /01 Site Information Contributing Basins EF Soils Report Soli Type Sandy Soil Infiltration Rate 1 8 in/hr = 015 ft/hr SHWT Elevation 10 feet Required Volume Design Storm = 15 inches (Project Drains to SA waters) Volume Required= 7,087 CF Volume Provided by I B #1 Storage Depth = 1 5 feet Surface area @ Bottom = 5179 sq feet Surface Area ® Storage= 6874 sq feet Bottom Elevation= 12 5 feet (at least 2' above SHWT) Storage Elevation= 14 feet Volume Provided= 9,040 CF 4— c�_lc ul _,fed by - 2 me#-7v(� Is Volume Sufficient (yes/no)? yes fie- 6--11-01 je,4&- Drawdown Drawdown Time = total volume / bottom surface area / infiltration 9 Hours less than 5 days (yes/no) 7 yes RECEIVED J U L 3 0 2001 PRaa # Sw2uo041 S ►I /1Kimfey Horn and Aumiales Inc Drainage Basin EF Project Information Project Name KHA Project # Designed by Checked by Site Information Sub Area Location Drainage Area (DA) Impervious Area (IA) Percent Impervious (1) Solis Report Ocean Harbour - Resort LaDane 1805102 OJP Date 6/11/01 DLS Date 6/11/01 EF 191 Acres 134 Acres 70 % Soil Type Sandy Infiltration Rate 1 8 in/hr ; 015 ft/hr Required Volume (Simple Method - preferred) Design Storm = 1 5 inches (Project Drains to SA waters) Determine Rv Value= 0 05 + 009 (1) = 068 in/in Volume Required= 7,087 CF ❑�❑ KimleyHam and Associates, Inc Sheed No k o1 Job.WM.E — Subject 5WAL—ES_ _ Job No PA 51000.1- Designed by —a 1 P Date 011,11211151 Checked by Date Loc.tiTtErS — — --.Fiow_Lmvilyka _BYpa55 -�jR v CIC-: (SEE_m J TSm�„ c I TJ !II Ij I 3 ^] 0 ivy n 0 J1p I f fiP I i �1 I.. .. . ........ _ _ k� = l 01 r MINIMIJ, mill, �o_ s� 4 • SCLS aIZ r.�fa I I I y 77 � .1 }( � k _� .� ' { t f � - ;" i - .. . ,� \" " �� ° fl ' ~ 'IY , �� + �+'-` - - „ , .. ± Bypass Device #1 A Outflow - 2 yr Storm Worksheet for Trapezoidal Channel Project Description Worksheet Bypass Device A Flow Element Trapezoidal Cha Method Manning's Form Sole For Channel Depth Input Data ManningsCoeffic 0050 Slope 005000 ft/ft Left Side Slope 025 V H Right Side Slope 025 V H Bottom Width 5 00 ft Discharge 326 cfs Results Depth 045 ft Flow Area 31 W Wetted Penmi 875 ft Top Width 864 ft Critical Depth 022 ft Critical Slope 0063715 Wft Velocity 105 ft/s <- Velocity Head 002 ft Specific Energy 047 ft Froude Numb 031 Flow Type 3ubcntical Project Engineer GTW688 untitled fm2 Krmtey-Horn $ Associates Inc FlowMaster v6 0 [614b] 06/12/01 12 15 41 PM 0 Haestad Methods Inc 37 Brookside Road Waterbury CT 06708 USA (203) 755-1666 Page 1 of 1 Bypass Device #1 A Outflow -10 yr Storm Worksheet for Trapezoidal Channel Project Description Worksheet Bypass Device # Flow Element Trapezoidal Cha Method Mammng's Form Solve For Channel Depth Input Data Mammngs CoefFc 0 050 Slope 005000 Wit Left Side Slope 025 V H Right Side Slope 025 V H Bottom Width 500 ft Discharge 465 cfs Results Depth 055 ft Flow Area 40 ftz Wetted Penmi 955 ft Top Width 941 ft Critical Depth 028 ft Critical Slope 0059796 fttft Velocity 1 17 ftls.6_- Velocity Head 002 ft Specific Eneq 057 ft Froude Numl> 032 Flow Type 3ubcntical Project Engineer GTW686 untitled fm2 Kimley-Hom & Associates Inc FlowMaster v6 0 [614b] 06/12/01 12 16 08 PM ® Haestad Methods Inc 37 Brookside Road Waterbury, CT 06708 USA (203) 755-1666 Page 1 of 1 Bypass Deice #1 B Outflow - 2 yr Storm Worksheet for Trapezoidal Channel Project Description Worksheet Bypass Device A Flow Element Trapezoidal Cha Method Manning's Form Solve For Channel Depth Input Data Manrnngs Coeffic 0 050 Slope 005000 ft/ft Left Side Slope 025 V H Right Side Slope 025 V H Bottom Width 500 ft Discharge 529 cfs Results Depth 059 ft Flow Area 43 ft2 Wetted Penmi 987 ft Top Width 972 It Critical Depth 030 ft Critical Slope 0058493 ft/ft Velocity 122 ft/s dl;—L— Velocity Head 002 ft Specific Eneq 061 ft Froude Numb 032 Flow Type 3ubcntical Project Engineer GTW688 untitled fm2 Kimley-Hom & Associates Inc FlowMaster v6 0 [614b] 06/12101 12 16 34 PM 0 Haestad Methods, Inc 37 Brookside Road Waterbury CT 06708 USA (203) 755-1666 Page 1 of 1 Bypass Device #1 B Outflow -10 yr Storm Worksheet for Trapezoidal Channel Project Description Worksheet Bypass Device A Flow Element Trapezoidal Cha Method Mammng's Form Solve For Channel Depth Input Data Mannmgs Coeffic 0 050 Slope 005000 ft/ft Left Side Slope 025 V H Right Side Slope 025 V H Bottom Width 500 ft Discharge 756 cfs Results Depth 071 ft Flow Area 56 112 Wetted Penmi 1088 ft Top Width 1071 ft Critical Depth 037 ft Critical Slope 0 055059 ft/ft Velocity 135 ft/s OZ,� Velocity Head 003 ft Specific Ener4 074 ft Froude Numb 033 Flow Type 3ubcntical Project Engineer GTW688 untitled fm2 Klmfeyaiom & Associates Inc FlowMaster v6 0 [614b] 06/12/01 12 16 55 PM 0 Haestad Methods, Inc 37 Brookside Road Waterbury CT 06708 USA (203) 755-1666 Page 1 of f Bypass Device #1B AND #1A Outflow - 2 yr Storm Worksheet for Trapezoidal Channel Project Description Worksheet Bypass Device A Flow Element Trapezoidal Cha Method Mammng's Form Solve For Channel Depth Input Data Mammngs Coefhc 0 050 Slope 005000 It/ft Left Side Slope 025 V H Right Side Slope 025 V H Bottom Width 500 ft Discharge 855 cis Results Depth 076 It Flow Area 61 W Wetted Penm4 1127 ft Top Width 1108 ft Critical Depth 040 ft Critical Slope 0053950 Wit Velocity 140 tlls �- Velocity Head 003 ft Specific Enert 079 ft Froude Numb 033 Flow Type Subcntical Project Engineer GTW688 untitled fm2 Klmley-Horn & Associates Inc FlowMaster v6 0 [614b] O6/12101 12 17 45 PM 0 Haestad Methods, Inc 37 Brookside Road Waterbury, CT 06708 USA (203) 755-1666 Page 1 of i Bypass Device #1 B AND #1A Outflow -10 yr Storm Worksheet for Trapezoidal Channel Project Description Worksheet Bypass Device # Flow Element Trapezoidal Cha Method Manning's Form Solve For Channel Depth Input Data Mannings Coeffic 0 050 Slope 005000 f tft Left Side Slope 025 V H Right Side Slope 025 V H Bottom Width 500 ft Discharge 1222 cfs Results Depth 091 ft Flow Area 79 ft2 Wetted Perim+ 1253 It Top Width 1231 It Critical Depth 050 ft Critical Slope 0050927 ft/ft Velocity 155 ft/s F' Velocity Head 004 It Specific Enert 095 ft Froude Numb 034 Flow Type 'aubcritical Project Engineer GTW688 untitled fm2 Kimley-Ham & Assoclates Inc FlowMaster v6 0 [614b] 06112J01 12 18 04 PM 0 Haestad Methods Inc 37 Brookside Road Waterbury, CT 06708 USA (203) 755-1666 Page 1 of 1 CurlICmleyHorn and Assowtes, ine Infiltration Basin #2 (I.B. #2) Project Information Project Name KHA Project # Designed by Checked by Ocean Harbour -Resort LaDane 1805102 O,f P Date 6/11 /01 DLS Date 6/11/01 Site Information Contributing Basins CD Salts Report Soil Type Sandy Soil Infiltration Rate 1 8 in/hr = 015 ft/hr SHWT Elevation 4 feet Required Volume Design Storm = 1 5 inches(Prolect Drains to SA waters) Volume Required= 11,211 CF Volume Provided by I B #2 Storage Depth = 2 feet Surface area ® Bottom = 5250 sq feet Surface Area ® Storage= 8214 sq feet Bottom Elevation= 8 feet (at least 2' above SHWT) / Storage Elevation= 10 feet I2f e�� e2 /7j2UC 1GU Volume Provided= 13,464 CF E— C2 fig- Co- (t-Ut I e4+er. Is Volume Sufficient (yes/no)7 yes Drawdown Drawdown Time = total volume / bottom surface area / infiltration 14 Hours less than 5 days (yes/no) ?_ yes RECEIVED PROJ # JUL 3 0 2001 DWQ CIKimley Horn S11 and Associates Inc Drainage Basin CD Project Information Project Name KHA Project # Designed by Checked by Site Information Sub Area Location Drainage Area (DA) Impervious Area (IA) Percent Impervious (1) Soils Report Ocean Harbour -Resort LaDane 1805102 OJP Date 6/11/01 DLS Date 6/11/01 CD 32 Acres 211 Acres 66 % Soil Type Sandy Infiltration Rate 1 8 in/hr = 015 ft/hr Required Volume. (Simple Method - preferred) Design Storm = 15 Inches (Project Drains to SA waters) Determine Rv Value= 0 05 + 009 (1) = 0 64 in/in Volume Required= 11,211 CF Kimley Horn and Associates, Inc Sheet No 1 of , ,lob L14_ "E - bGEghj W . subject 5w A Job No 015510 ]c t- Designed by WE Date Ole 112101 Checked by Date INES NJ M OMEN soon mom mm Bypass Device #2A Outflow - 2 yr Storm Worksheet for Trapezoidal Channel Project Description Worksheet Bypass Device # Flow Element Trapezoidal Cha Method Manning's Form Solve For Channel Depth Input Data Mannings Coeffic 0 050 Slope 005000 ft/ft Left Side Slope 025 V H Right Side Slope 025 V H Bottom Width 500 ft Discharge 379 cfs Results Depth 049 ft Flaw Area 34 ft2 Wetted Penmg 907 ft Top Width 895 ft Critical Depth 024 ft Critical Slope 0062017 ft/ft Velocity 110 ftfs �^— Velocity Head 002 ft Specific Eneq 051 ft Froude Numb 031 Flow Type 3ubcritical Project Engineer GTW688 untitled fm2 Kimley-Worn & Associates Inc FlowMaster v6 0 [614b] O6/12/01 12 25 03 PM 0 Haestad Methods, Inc 37 Brookside Road Waterbury CT 06708 USA (203) 755-1666 Page 1 of 1 Bypass Device #2A Outflow - 10 yr Storm Worksheet for Trapezoidal Channel Project Description Worksheet Bypass Device A Flow Element Trapezoidal Cha Method Manning's Form Solve For Channel Depth Input Data Mannings Coeffic 0 050 Slope 005000 ft/ft Left Side Slope 025 V H Right Side Slope 025 V H Bottom Width 500 ft Discharge 541 cfs Results Depth 060 ft Flow Area 44 f 2 Wetted Penm4 993 ft Top Width 978 ft Critical Depth 030 ft Critical Slope 0058267 Wit Velocity 1 22 f /s E--- Veloclry Head 002 ft Specific Eneq 062 ft Froude Numb 032 Flow Type 3ubcntical Project Engineer GTW688 untitled fm2 Kinsley-Hom & Associates Inc FlowMaster v6 0 [614b] 06/12/01 12 25 27 PM 0 Haestad Methods Inc 37 Brookside Road Waterbury CT 06708 USA (203) 755-1666 Page 1 of 1 Bypass Device #2B Outflow - 2 yr Storm Worksheet for Trapezoidal Channel Project Descripbon Worksheet Bypass Device R Flow Element Trapezoidal Cha Method Manning s Farm Solve For Channel Depth Input Data Mannings Coeffic 0 050 Slope 005000 fVft t_eff Side Slope 025 V H Right Side Slope 025 V H Bottom Width 500 ft Discharge 794 cfs Results Depth 073 ft Flow Area 58 ftz Wetted Perimi 1103 ft Top Width 1085 ft Critical Depth 038 ft Critical Slope 0054613 fVft Velocity 137 fVs .tom Velocity Head 003 ft Specific Enerf 075 ft Froude Numb 033 Flow Type 3ubcntical Project Engineer GTW688 untitled fm2 Kimley-Hom & Associates Inc FlowMaster v6 0 [614b) 06/12/01 12 25 51 PM 0 Haestad Methods, Inc 37 Brookside Road Waterbury, CT 06708 USA (203) 755-1666 Page 1 of 1 Bypass Device #2B Outflow -10 yr Storm Worksheet for Trapezoidal Channel Project Description Worksheet Bypass Deice # Flow Element Trapezoidal Cha Method Manning's Form Solve For Channel Depth Input Data Mannings Coeffic 0 050 Slope 005000 fttft Left Side Slope 025 V H Right Side Slope 025 V H Bottom Width 500 ft Discharge 1134 Cfs Results Depth 088 ft Flow Area 75 ft2 Wetted Penmi 1225 ft Top Width 1204 It Critical Depth 047 It Critical Slope 0051536 ft/ft Velocity 151 ft/s 4 Velocity Head 004 ft Specific Enert 092 ft Froude Numb 034 Flow Type 5ubcntical Project Engineer GTW688 untitled fm2 Kimley+lom & Associates Inc FlowMaster v6 0 E614b) 06/12/01 12 26 06 PM 0 Haestad Methods Inc 37 Brookside Road Waterbury, CT 06708 USA (203) 755-1666 Page 1 of 1 r _„ Kim€ey Hom i• and Assmates Inc Infiltration Basin #3 (l.B. #3) Project Information Project Name KHA Project # Designed by Checked by Site Information Contributing Basins Ocean Harbour -Resort LaDane 1805102 OJP Date 4/10/00 DLS Date 4/10100 GG Soils Report Soil Type Sandy Soil Infiltration Rate 1 8 €n/hr = 015 ft/hr SHWT Elevation 195 feet Required Volume Design Storm = 1 5 inches (Project Drains to SA waters) Volume Required= 9,112 CIF Volume Provided by I S #3 Storage Depth = 2 feet Surface area @ Bottom = 4185 sq feet Surface Area 0 Storage= 5990 sq feet Bottom Elevation= 22 feet (at feast 2' above SHWT) Storage Elevation= 24 feet / Volume Provided= 10,175 CF 4— C'21CVl2Frd i� eil-4 �e2 h7e7��C� Is Volume Sufficient (yes/no)? yes ^ rJ� I Drawdown - Drawdown Time = total volume / bottom surface area / infiltration 15 Hours less than 5 days (yes/no) ? yes KcmleyHom and Anwales Inc Drainage Basin GG Project Information Project Name KHA Project # Designed by Checked by Site Information Sub Area Location Drainage Area (DA) Impervious Area (IA) Percent Impervious (1) Soils Report Ocean Harbour -Resort LaDane 1805102 OJP Date 4/10/00 DLS Date 4/10/00 GG 341 Acres 167 Acres 49 % Soil Type Sandy Infiltration Rate 1 8 Whir = 015 ft/hr Required Volume (Simple Method - preferred) Design Storm = 1 5 inches (Projct Drains to SA waters) Determine Rv Value= 0 05 + 009 (1) = 049 inrn Volume Required= 9,112 CF ❑=❑ Klmley-Hom and Associates, Inc Sheet No 1 0/ 1 Jab subject 5wAuE5 dab No 01651PW Des+gned by CLIP Date A 61 tit 1C l Checked by Date f i I I— ( it i I — 1 i '� 3� s F lL_ U Lo j3bF:'5 —^L _sEE --I- -- — �m -- Flow_Leavir►�a Bypass Ir Z h� Ito 1 1 1 1. 5 s Ye R�vr��e 1 I _NTo t +a --�-i- I � I — I 71 E EL- F-1 I ! I I � Bypass Deice #3 Outflow - 2 yr Storm Worksheet for Trapezoidal Channel Project Description Worksheet Bypass Device A Flow Element Trapezoidal Cha Method Mammng's Form Solve For Channel Depth Input Data MannmgsCoeffic 0050 Slope 005000 ft/ft Left Side Slope 025 V H Right Side Slope 025 V H Bottom Width 500 ft Discharge 1337 cfs Results Depth 096 ft Flow Area 84 ftz Wetted Penmi 1288 ft Top Width 1265 ft Critical Depth 052 ft Critical Slope 0050208 fttft Velocity 158 ftls4z Velocity Head 004 ft Specific Eneq 100 ft Froude Numb 034 Flaw Type 3ubcntical Project Engineer- GTW688 u \018051021camalbypassddches fm2 Klmley-Horn & Associates Inc FlowMaster v6 0 [614b) 06/12/01 12 32 46 PM 0 Haestad Methods Inc 37 Brookside Road Waterbury, CT 06708 USA (203) 755-1666 Page 1 of i Bypass Device #3 Outflow -10 yr Storm Worksheet for Trapezoidal Channel Project Description Worksheet Bypass Device # Row Element Trapezoidal Cha Method Manning's form Solve For Channel Depth Input Data Mannings Coeff c 0 050 Slope 005000 Wit: Left Side Slope 025 V H Fight Side Slope 025 V H Bottom Width 500 ft Discharge 1910 cfs Results Depth 1 14 ft Row Area log ft2 Wetted Penmi 1442 ft Top Width 1414 ft Critical Depth 064 ft Critical Slope 0047511 ft/ft Velocity 175 ft/s 4E7— Velocity Head 005 ft Specific Eneq 1 19 ft Froude Numb 035 Flow Type 3ubcntical Protect Engineer GTW688 untitled fm2 Kimley-Horn & Associates Inc FlowMaster v6 0 (614b) 06/12/01 12 30 32 PM C Haestad Methods, Inc 37 Brookside Road Waterbury, CT 06708 USA (203) 755-1666 Page 1 of 1