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Home My WebLink About19951268 Ver 3_Deep Point Marina #91-96 Minor Mod Drawings_20210916fii Wetland Area~'BC Re -flagged by LMG Aug 2021, will be re -surveyed LEGEND Wetland Une Property Line x x Silt Fence: Detail Sheet S Exist Topo Proposed Spoil Basin: 5 Intervals & 22FMSL Top of Spoil & 26 FMSL Top Flat Proposed Spoil Basin: 1' Intervals Proposed Soil/Spoil Mounding: 5' Intervals Proposed Soil/Spoil Mounding:1' Intervals Spoil Basin Max Footprint Existing SW Basin 25.1 Cross Section Centerline Exist SW Pipe/Outlet Temp Const Entrance: Detail Sheet 5 Voluntary 15' Setback (Min) From The Landings P.L PROPOSE[ SPOIL BAS 9-F - D 1.5.1 InsiOe Side Stokes 92 5± cu }ds from lop of Spud Level 22 rMSL to 0 FMSL N FFp pOj : = x FTyFG4�ero k W ." °" x x _� x NQjA P ,^ .• TWetland Area 'C"' GS 4n Re -flagged by LMG r`pe, x - - eug 2rveyed ill be - - - /� 15' Volu ntary setlsack where ( • Wetlands do not control+lt Fenceaceme,lt Where Wetland is <15' from The Landings Property Une, a 15' offset/setback will be maintained for the Spoilo Basin Toe from the Deep Point -The landings Property Line. Silt Fence per NCGO1 Ground Stabilization and Materials Handling (Separate Sheet Effective Dated 4/1/19 indicates for Stockpiles, 5' of separation is to be maintained from the toe to the silt fence. This Spoil Basin is not quite a Stockpile, but Silt Fence is Drawn as much as possible to follow this guidance. Silt Fence along road to be set at 10' off of edge of road. Note: CAMA by Heather Coats E-mail 12-10-2011 confirming Doug Huggett Conversation that extending spoil basins upward (and inward by virtue of the no steeper than 2H:1V Exterior Slopes) Is allowed as long that the original footprint is maintained. Hence the Spoil Basin Design Max Footprint Is shown in places further out than the proposed topo, in order to give constructor more leeway in maximizing the basin interior volume or for dry soil/dry spoil placement. Spoil Basin 02 Designed with 2H:1V or Shallower Exterior Side Slopes As drawn: 2.5H:1V End Slopes; 2H:1V Side Slopes (Shallower 2.5H:1V End Slopes to make machinery access/emptying basin easier) ,FA-' `4y cP ;' d Exist 'Storage" Gap -4F` See Engineer for Silt . 7L.,. Fence Best Placement 4,c Wetland Area 'D" Re -flagged by LMG Aug 2021, will be re -surveyed 0 SetoQetL`! G Existing Infiltration Basin 25-1 Bottom of Basin 7 FMSL; Top o1 Basin 9 FMSL 311:1 Traced from pdf underlay and Google Earth Image Retaining Wall For Hotel has not yet been constru Spoil Basin #2 Interior Side Slopes Designed at 1.5H:1V Interior End Slopes are Shallower based on AutoCad Polyline 1.5' Offset Side Slopes. West End Cad Slope 196'H:26V = 7,5H:1Vt East End Cad Slope 50'H:26'V = 1.92:1V± As Site is Sand As drawn: 2.5H:1V End Slopes; 2H:1V Side Slopes (Shallower 2.5H:1V End Slopes to make machinery access/emptying basin easier) THIS PROJECT I5 NOT INTENDED TO PRODUCE ANY NEW IMPERVIOUS. SPOIL BASIN FUNCTION IS SELF CONTAINING, SO NO OFFSITE DRAINAGE OTHER THAN EXISTING GROUND Stabilization and Materials handling to be per included NCG01 Drawing and 2017 S&ME Page 2 "Notes" 'Notes is a bit more site specific, but if conflcts with NCG01, NCG01 contraols as it is newer. This project is additional area to existing S&E Permit BRUNS-2017-049. Cover Sheet 1, Notes 2, and Details 5 are still relevant for this very similar phase of Spoil Basin Functions for the Deep Point Marina. Contact Person for this Project is Bruce Marek, P.E. Cell 910-228-2484 Groundcover per Sheet 2 Notes is believed to be in accordance with Stortnwater General Pewrmit NCG010000 E-Dock -5 Deep Point Marina Bald Head Island Limited, LLC ca a E-Dock #M-2 S&ME 40' Soil Boring Report Date 11-8-96 Appx Est Orig Grade 19 FMSL E-Dock E-Dock V side slopes O \ - cted S&ME 40' Soil Boring Soil Description 11-8-96 Report : Closet Boring = M-: Depth Elevation Description 0'-0.5' 19 FMSL Organics & Loamy Silt To be Removed 0.5'-33' 18.5 to -14 FMSL Medium Dense to Loose Fine to Medium Sand 33'-40' -14 to -21 FMSL Loose to Medium Dense Clayey Fine Sand 2' 17 FMSL 4.5' 14.5 FMSL 7' 12 FMSL 9.5' 9.5 FMSL 15' 4 FMSL 19.5' -0.5 FMSL 24.5' .5.5 FMSL 0' 10' 7s0'30' 40' SO' 69' 79'40' 9O' 100' Verify Scale with Graphic Scale as POF's may be printed on alternate size paper Medium Dense to Loose Fine to Medium Sand Medium Dense to Loose Fine to Medium Sand Medium Dense to Loose Fine to Medium Sand Medium Dense to Loose Fine to Medium Sand Medium Dense to Loose Fine to Medium Sand Medium Dense to Loose Fine to Medium Sand Medium Dense to Loose Fine to Medium Sand #M-1 S&ME 40' Soil Borir Report Date 11-87% Appx Est Orig Grade 7 FM UCSC SPT N3 Blows/Ft Marek Est Friction Angle (SP) (SC) (SP) (SP) (SP) (SP) (SP) (SP) (SP) 11 6 7 8 16 7 8 35' 31.5° 32.5' 33.5° 37° 32.5° 33.5° Whereas Very Dense is Typically Defined as > S0 Blows/ft = >45° Angle of Internal Friction; Dense = 30-50 Blows/ft = 40°-45°; Compact =10.30 Blows/ft = 35°-40°; Loose 4-10 Blows/ft = 30°-35'; Very Loose = < 4 Blows/ft <30° Approximate Spoil Basin #2 Presently Undisturbed Site has (after clearing/grubbing) a min angle of internal Friction = 31.5° = 1.63H:1V; max 37° =1.32 1.32H:1V; and an appx average = 33.6' = 1.5H:1V in relevant depths of the proposed Spoil Basin #2 Spoil Basin #2 interior side slopes shown as nominal 1.5H:1V = 33.6° to maximize interior volume. From the original soil report this should be achievable, or close to achievable. It doesn't matter if the interior slope is slightly less or more at time of construction, as the intended spoil will further support the interior slopes. am a pi M WiLMINGTON, NC ttn Arc.h D '''''' '''''' go4,„„ SEAL 0//? /r( 15884 d BRUCE MAREK, P.E. 5489 EASTWIND RD WILMINGTON, NC 28403 CELL 910-228-2484 Ws y4 BRUNS-2017-045 - iAwA 9I-96 A!': 2021 SPOILS F. DEEP PT SPOTS a&svf2 VERIFY WARAPHTCSGLLE Longitudinal Cross Section Easterly (Marina Basin) End of Proposed Spoil Basin #2 .5H:1V End Exterio 20 FMSL 10 FMSL 0 FMSL - 10 FMSL 0 + 0 0 20 FMSL 10 FMSL 0 FMSL - 10 FMSL 0 + 0 0 Spoil B sin s; As dra . 2.5 (Shall° er 2.1 Slope Design with 2H:1V or S all owe( ide Slopes :1V End lopes; 2H:1V S. Slopes 61V End lopes to make achine access/emptying.:sln ea ier) Spoil Basin e21 terlor ide Slopes Des tined at 1, 11:1V Interior End SI s a e Shallower based on Aut West End Cad S pe 1 1.126'V = 7.5 IVx East End Cad SI pe 50' :26'V = 1.92:1 m As Site is Sand As drawn: 2.5H: V End lopes, 2H:1V 5 de Slopes (Shallower 2.5H V End lopes to makmachine access/emptying basi ea'ier) d potyline 1.5' Offset Si a Slopes. 1.5H:1 Interior s SI Pe Westerly (Ferry Rd Entrance) End of Proposed Spoil Basin #2 2.5H:1 n xterior Slope O O O — — —1 —► N N Ni N W W UJ p p Val/ 1 Cn In 01 Cr) Co + + + + + + + + + + ++ ++ + + + ++ ++ + + + + + In CO O W U Co 0 N Lil CD O lJ 101 O U 7 0o 00 In IJl O LJ 1 0 Ul 0 O co NJ O Ni 0 01 O lD 0 NO 00 0 0 Co 001 Oln O O O O 0 Scale: 1'r=30' on Arch D Transverse Section: Spoil Basin #2 2H:1V Exterior Side Slopes 26 FMSL Top 1.5H:1V 24 FMSL Freeboard/T.p of Water Deep Point/The Landing. T 10'Top Flat Interior Side 22 FMSL Top of Spoil 2H:1V Exterior Property Line 2+79± D 26 FMSL Sloes p Side Slopes --nm n m Design B ttom :xist : Infiltration Basin 25-1 0 FMSL CAMA 1-96 Additional Detail Sheets Include he Outlet Structure o O O O O 0 + + + + + + —1 CPI Ul 4 �1 CO Lii 0 0 0 CO 01 + + + + O —.t N O N —1 J 0 + _. —1 —1 — N + + + + + + + Ol Lo a) 4 • co W 0 N N N + + + W to 0 N N N + + + + 01 4 o CO Scale: 1"=10' on Arch D C2A PROPOSED SPOIL BASIN 02 DETAILS RECEIVED AUG 2 0 2021 DCM WILMINGTON, BRUCE MAROC, P.E. 5489 EAS1WIND RO WILMINGTON, NC 28403 CELL 910-228-2484 2 POINT UOP1IOA 3)5 FERRY DRN SOt1IMPORT. NC -[.E BRUNS-2017—i, '.: CAMA / 91-96 M,;a;;1' 2021 SPOILS BASIN #. "ME GATE SITE mows OUP el SPOLS BASE!/2 INY NC VERIFY W/GRAPICSCLLE DI LI LP POINT NIA RINA CA\GA691.96 PROPOSED SPOIL. 13ASI(' t#2 SPILLWAY DP:FA11. CHANNELS, I -BEAM AND BOARDS 3' CHANNEL OR SPILLWAY MAKER'S STD P.T. SLOPPY VEE OR T&G BOARDS 3' ('BEAM OR SPILLWAY MAKER'S STD 3• CHANNEL OR SPILLWAY MAKER'S STD ABOVE SIZES BASED ON EXISTING SPOIL BASIN 41 SPILLWAY. IF SPILLWAY OF SLIGHTLY DIFFERENT 512E OR SHAPE IS COMMERCIALLY OR READILY AVAILABLE THAT IS ACCEPTABLETOP 24 FMSL 2 TO ENGINEER (I.E.4'X4' 80X SECTION) 16's/- PROPOSED SPILLWAY WITH NEW 48" GALVANIZED CORRUGATED HALF PIPE EXTENDING UP FOR 2' FREEBOARD CONDITION AS SHOWN (STANDARD PIPE LENGTHS TO BE UTILIZED IF POSSIBLE) CONTRACTOR TO VERIFY SOIL CONDITIONS AND SAFELY EXCAVATE BERM TO SET BOTTOM OF NEW 18" CORRUGATED STEEL OUTLET PIPE AT APPX ELEV 11 FMSL BUILD BERM ABOVE & BACKFILI TO STABILIZE SLOPES AND TOP FLAT. TOP FLAT: APPX 10' WIDTH TOP ELEV 26 FMSL (NOMINAL) TOP WATER ELEV 24 FMSL TO POLL ELEV 22 FMSL (NOMINAL) APPX 55'+/- NEW 1B' OWLET PIPE' VERIFY LENGTH AT SITE WELDED 18" SIUBOU7 PER SPILLWAY MAKER STANDARD DETAIL FLANGE PLATE/REDUCER TO DREDGER'S PIPE (lyp 6--6"9) PIPE INTERSECTIONS TO BE SECURELY I(XNED. (BY CLAMPING OF BELL & SPIGOT AND/OR SEALED WITH COAL TAR OR SIMILAR SEALANT) SILT FENCE DREDGER'S PIPE OR HOSE EXTENSION TO RIVER (TYPICALLY 6' OR 8'e (APPX 700' TO MLW) NOT SHOWN: ANCHORAGE OF DREDGERS PIPE END TO RIVER BOTTOM AT/BELOW MLW RIVERWARD OF ANY MARSH GRASSES. DREDGER(5) TYPICALLY USES OANTFORTH MARINE ANCHOR ATTACHED TO/THRU END OF PIPE. EROSION CONTROL PLACE SILT FENCE TO DOWNWARD SIDE OF RIVERSIDE 0E BERM AT CUT FOR PIPE. TO REMAIN IN PLACE UNTIL VEGETATED. SEEDING IN PIPE AREA USE CURLEI(/ECO-MAT (FIBCRCLA55 NETTING WITII WOOD SHAVINGS.4' ROLLS) OVER DENUDED AREAS, SET WITH 50D STAPLES. OVERSEE° WITH WEEPING LOVEGRASS W/SUMMR SEED COATING (A FERTILIZER COATING BY PINNACLE SEED CO.) AT 1HE RATE OF 3 LBS PER 1000 SF. NOTE: DRAWING NOT TO SCALE ACTUAL SLOPES ARE LESS STEEP. A.Outlet Structure Appx Location and Dredger Outflow Pipe Path 1. Example 4' Diameter Half —Pipe Spillwoy Structure (From Deep Point 2009 Spoil Basin jll Replacement) 20 FMSL 10 FMSL 0 FMSL 2. Example 4' Diameter Half —Pipe Spillwoy Structure with wood wash boards Pf}c3POSED 'OIL BASIN .M-2 58/ME 40 Sol Barg Report Dale 11.8.96 ph Est Ono Grade 19 FMSL E-Dock 9A. Scale: 1"=80' on Arch D E-0act E Dock PM•1 5&ME 40' Sal Boring Report Date 11.8.96 Appx Est Orig Grade 7 FMSL B.Outlet Structure Appx Location and Dredger Outflow Pipe Path 3. E0omple 4' Diameter Half —Pipe Spillwoy Structure with gale. wire tie downs 4. Example Thru—Berm Outlet Pipe 5. Example Thru—Berm Outlet Pipe with reducer plote for dredgers pipe AREA AT TOP OF BERM = 26 FMSL = 27,500 SF AREA AT TOP OF WA TER= 24 FMSL = 24,900 SF AREA AT TOP OF SPOIL = 22 FMSL = 22,350 SF AREA AT 27' elev = 21,000 sf AREA AT 20' elev = 19,800 sf AREA AT 15' elev = 14,200 sf AREA AT 10' elev = 9,700 sf AREA AT 5' elev = 6,000 sf AREA AT 0' elev = 3,100 sf Total Topo Map Volurrne from 0' to 22' elev =9,2001 cu yds Additional Volume Achievable by moving dewatered spoil to adjacent spoil mounding area (cyan) on sheet Cl. Deep Poin t Marino, Southport, NC C.Spoil Basin 2 Areas & Volumes 6. Example Thru—Berm Outlet Pipe and showing dredgers pipe continuing to river 7. Example dredgers pipe continuing to river with tie down and onchor (low tide) 7. 8. Example dredgers pipe continuing into river (with lie down and onchor below water of high tide) -10 FMSL O + O 0 2H:1V Exterior Side Slopes 10 Top Flat 26 FMSL 1.5H:1V Interior Side Slopes Transverse Section: Spoil Basin #2 0 + Cf1 0 1.5 O + O O + co 26 FMSL Top 24 FMSL Freeboard/Top of Water 22 FMSL Top of Spoil Design Bottom 0 FMSL + O O D.Spoil Basin 2 Cross Section with Spillway Structure Top of Spillway Structure 24 FMSL Btm of Spillway Structure 8 FMSL 2H:1V Exterior Side Slopes Btm of 18' Slope Thru Berm: Corm. led Steel 1 Per 100 = -.6' 1111111111 11111111 I — Outlet Pipe at Structure 11 FMSL± T (D Adapter Cap at end of 18" !D Corrugasted Pipe Purchase 60'; Fit at Site CAMA 91-96 Spillway Detail _1 _! —a N + + + + + + + d1 4 D W Note: Pipe is to be laid to East (Manna Side) of Infiltration basin. (Appx 9 FMSL at Infiltration Basin Top) Exist Infiltration Basin 25-1 Dredger DichargePipe to River Typical& 6' 8.0; See Detail ' this sheet & Dwg C3 seal dale 7-23.21 fo Path to River, Appx 700 LF ..................................... ......4..Uq....."'.e1ejn.eeu.. N N + + Ol 01 Scale: 1 "=10' on Arch D + N + co w RECEIVED AUG .2 0 202 DCM WILMINGTO SEAL mi 15684 i(y 9�G NE XP (qz' yJ� 5189E AIARFCY, J(, P.E. 5489 EASTWGTON, ND RD WILCELLINGT — 8C 28103 84 CELL 910-228-2484 MARINA t DftiVE 28461 -1G l 91-96 MINOR MCC 21 . _. _ .,+ a2 Split ;. e4_ DEEP Pr SPOLD e.Lswla YTR4Y w/CRI 6.69C LE 1 T"•__ Additional Lon T Disturbance Area #1 2 Acres 404 Wet Starts Ap to Marina PrPre Landings op Line 404 AREA: To R Appx / If AREA: R.R APPx I Parking Lot 6 East Completed Ju? y 2021 404 VieUond Stops Appx 925 If aloe. FUTURE HOTEL New OUTSIDE OF 75' AEC) Outlet - ;2 Sooil Bosin 2021 Control Str ctur Existing Infiltrot:on Basin 25-' AREA: To ROW/ Additional No LAND DI.TUR= SCE TO TAKE'PtACE. V4tHIN 30' MARINA QbFFER/75' AEC OR WTHIN 4( Bt LAND AREAS / Disturbance Area #4 75' AREA OF ENIARONMENTAL CONCERN 30' CAMA BUFFER Additioro: Disturbance Area #2 Wall Repair 1 Acre SPOIL BASIN #2 f-Laydown/Staging 4 Acres TM Landings Property UM Appx 750 LF 8 Discharge Pile from Outlet Control Structure to River 404 ARE Additional Disturbance Area #3 3 Acres PASSENGER FERRY TERMINAL (SEE ARCHITECTURAL PLANS FOR DIMENSIONS) e' WOODEN WALKWAY 100 E2OSTNG CONTRACTOR FERRY LANDING MARINE MAINTENANCE FACILITY AMAIN BLDG 200 BARGE LANDING AREA BRUCE MAREK, P.E. 5489 EGetwind Rd Wilmington, NC 28403 �910-799-9245,Cell 910-228-248 J F.XIST'NG SPOlt BASIN #1 404. REIL.AND AREA POW --- DEEP POINT MARINA 1301 FERRY DRIVE SOUTHPORT. NC 28461 CAMA # 91-96 MINOR MODIFICATION DWG FOR SPOILS BASIN 12 And SEDIMENT & EROSION ONTROL BRUNS-2017-049 UPDATE IMP PT 7-23-21 V RECEIVED AUG 2 0 2021 DCM WILMINGTON, NC