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Home My WebLink About23-11 OVERSIZE PLANSPAMLICO SOUND DURANTS POINT PROJECT SITE 12 HATTERAS ATLANTIC OCEAN HATTERAS INLET HATTERAS NORTH CAROLINA VICINITY MAP SCALE: 1" = 5,000' EXISTING EXISTING BULKHEAD RIPRAP REVETMENT 1 I1�e I I, 111 . I I I ®. t t I t-E EX. SHORELINE (DATE/ELEV. AS NOTED) - - '•'-"" - FIRST LINE STABLE NATURAL VEGETATION - - - - - - - - _( - - - EXISTING GRADE CONTOUR 9-9-09 (NAVD 1988) POSSIBLE CONSTRUCTION PHASE LINE 7JC 7>r}C J }t u7^ r• t ,�1�_ c .+ �� EXISTING RIPRAP REVETMENT q q p q O q PROPOSED RIPRAP SILL q o v v q q PROPOSED WETLAND PLANTINGS NOTES: 1. EXISTING SITE FEATURES AND GRADE/BATHYMETRY CONTOURS BASED ON A FIELD SURVEY OF THE SITE PERFORMED BY BISSELL PROFESSIONAL GROUP ON 9/9/09. 2. SHORELINE LOCATIONS BASED ON FIELD SURVEYS OF THE SITE PERFORMED BY BPG ON 9/9/09 (HIGH) AND 10/23/09 (NORMAL). 3, THE SILL HAS BEEN DESIGNED AROUND GUIDANCE OUTLINED IN 15A NCAC 07H SECTION .2700 "GENERAL PERMIT FOR THE CONSTRUCTION OF RIPRAP SILLS FOR WETLAND ENHANCEMENT IN ESTUARINE AND PUBLIC TRUST WATERS." 4. THE MEAN HIGH WATER ELEVATION IS REFERENCED DUE TO THE PROJECT SITE'S PROXIMITY TO HATTERAS INLET. 5. THE MEAN HIGH WATER ELEVATION IS AN APPROXIMATION BASED ON NOAA TIDAL DATUMS FOR OREGON INLET MARINA, PAMLICO SOUND (CONVERTED TO NAVD 88) AND A STUDY OF VEGETATION INDICATORS FOUND AT NEARBY MARSH. TIE PROPOSED SILL TO EXISTING RIPRAP REVETMENT WITH A DROP DOWN SECTION. PROVIDE A MINIMUM OPENING OF 10' IN WIDTH BELOW MHW ELEVATION. / I I I I I i 1 1 1 / 1 I I � I IJ \ 1 I � J .7�°_�{{pIl.�'1 FF' i PAMLICO SOUND f ------------- / - TOTAL LENGTH - 318 LF± r c: z m 0 55' CRESTJ LENGTH 7VAVG. Cl, EST LENGTH SE i) -' 5E (PHA E 2) / 7 TYPICAL PH PROVIDE DROP DOWN ( 1En � X q " 51 / / (SEE DETAIL) ' IT RIPARIAN SETBACK 4 0 f - t � ,s -t � + "" -x � x•F 't .� �- � �' t Tx x x x � � •r. �' ty, � X{• '` F,o �F- ax '¢� x �. y�' � _ - - ...° - - ._ - x�.. 't 't •!- 7•t t y. -•- 'F" -.�' -t Y- f x Y i- y Y" 'x X x 't +- -t .�. .,. Y;,-.-z'-�• :i- 'F.... t y� .t X •-Y-_.. ,�,_, x % t r y- .�'- .,� - •t•• x �•t � ,� a y: •�� ti . •f. y, Y- "_r ^- / � i - • WATER LEVEL • • �� .„-„1 "�. f� / _ � tt� y1_ .f '� �_' ,�-x. %;lr. y �.f�,� _..� f.�f x �. x �.■t v'` # x,,rx �I +riJ x'F y Y, + i't 1/. y,fy. •t x x3y' .„(. , x '� »,t yV. '�-Ff xI- t -F F fi :Yc- 1i- x 1 %1x'F®�- rI!`1 "/• x �1- 1 Y- +�n •� 10% F ly x + f�F �•t x I " :I l �. ¢xI .F, x .t��` y.yl ++ 1(_yx- ,�� 7,y+- . r. � x x j"t x , - •2�3 -09)x APPROX. rl AWL ELEV. 0,5'± A 4� * y •€x t + -- x f •F _t xx + t ++ X- *Tx+ +{ x s + y + ++ * +-t + _ r--o----- ---- _- --- _ -- ---C -_- - 4t_...-.- -. - -- - - - -C) x K + 1 + Y y~+ •), t • y �.,. N + t F 4 y b + a y _ f x a + - F� + t �+ ' + ` x ti + F + i + ? -+_ _ G r --J y _ - .� - - - - - - - _ .1+..• s BENCHMARK Q+ -� x ;,. fi• _�.=�.a.-_ x 7WA ( 9_ �.� _~• < �. * f y x x % X - tf • �, rt �` y t HIGH WATER LEVEL ELEV.:1,5't OBSERVED 9- _ - .- _ - _ - - _ - - __ _ - - EXISTING IRON ROD $-�=�. u x ¢ �f :x x; = y �._ r•� •ram} +_ •...�•'-r-ya,�-,_Ix .r - - - - - - - - - - - - - - - - - - - - - - - NAD 83 (2007) HORIZONTAL COORDINATES EXISTING - - - 1 N 551843.08 RIPRAP REVETMENT ��-� �.. _!� - - - Y (9-9 09)'�` --•� =_ - - - - - - - - - - - - - - - -- - - - L1- Y F1SNV O D E N S DOCK/HATTERAS E 2987162.29 - NAVD (1988) VERTICAL COORDINATES BENCHMARK - - - - - - MARINA HARBOR 1.85' EXISTING IRON PIPE ESTABLISH WETLAND VEGETATION NAD B3 (2007) HORIZONTAL COORDINATES LANDWARD OF PROPOSED SILL. • N 552063.49 SEE SHORLINE STABILIZATION NOW OR FORMERLY E 2987374.78 TYPICAL SECTION DETn1L FOR MARY DAWN JURY NAVD (19B8) VERTICAL COORDINATES FURTHER INFORMATION, \ PIN: 958519712942 2 67' w ` NOW OR FORMERLY ROBERT A. WEST PIN: 958519713947 NOW OR FORMERLY JACQUEUNE B. POTEATE ` PIN: 958519714008 PROVIDE YELLOW REFLECTORS EXTENDING 3' ABOVE MHW AT 50' STATE NOW OR FORMERLY CAOF NORTH CAROLINA INTERVALS ALONG SILL • ' `1 • • � `^�1 � �y,• • • PIN: 958520725247 NOW OR FORMERLY RICHARD ANDERSON MIDGETT • �'' ' PIN: 958516728518 AVG. SILL CREST ELEV.: 1.0' I 5' MIN, 0 MHW ELEV. APPROX. MHW ELEV.: 0.50 I 1'I�1 E k-] ® 'E1, wtr 1 •l 1 !!R f 1•{ ,� f -'l APPROX. MLLW ELEV.: -0.66- AVG. BOTTOM ELEV.:-1,30'± I 1.1 1 ,I.t� I 1 1'; ®oe I ® t�i ! , 1 )��r• , 1 1s I !.l >w� tt � f�l ! i 1 t j\X`jXj`/��j '•\j\Xj\Xj�\jam\ PROVIDE DROP DOWNS AT LOCATIONS SHOWN ON PLAN ELEV.: -0.7'± RIPRAP SILL DROP DOWN DETAIL T77177TXMTED, NOT TO M= 30' ± (SEE PLAN) PHASE LENGTH OF SILL VOLUME OF STONE TONNAGE OF STONE AREA OF PATENS AREA OF ALTERNIFLORA GRAPHIC SCALE -� 1 (3) SECTIONS 256 LF. 170 CU.YD.± 380 TONS± 4,300 S.F.± 3,950 S.F.± 2 (1) SECTION 62 LF. 42 CU.YD.± 94 TONS± 1,510 S.F.± 1,270 S.F.± 60 TOTAL (4) SECTIONS - 318 LF. 212 CU.YD.± 474 TONS± 5,810 S.F.± (0.13 AC.) 5,220 S°F.± (0.12 AC.) 30 0 15 30 SMOOTH CORDGRASS (SPARTINA ALTERNIFLORA)* PLANTED WITHIN INTERTIDAL ZONE BETWEEN MHW AND MLW. 20' MIN. RECOMMENDED THE PLANTING INFORMATION ILLUSTRATED HEREON IS PRRVIDED ONLY AS A GUIDE. RECOMMEND CONTACTING A NATIVE WETLAND PLANT SPECIALIST FOR FURTHER PLANTING SPECIFICATIONS AND POSSIBLE ALTERNATIVES. //.�/.�:��//`/;.j%i�/;,'�% FILTER FABRIC �/ ,`�\� ` /~ /\ /\� ;` NCDOT CLASS II RIPRAP /� /\ FILTER FABRIC, SHALL BE 8oz. WOVEN GEOTEXTILE 13' BOTTOM WIDTH TYPICAL (15' MAX TYPE OR APPROVED EQUAL. FABRIC SHALL BE RIPRAP SHALL CONSIST OF CLEAN FIELD STONE OR ROUGH UNHEWN QUARRY PROPERLY ANCHORED AT TOE OF SILL AS STONE BE U FREE G LOOSE SEDIMENT OR ANY POLLUTANTS. THE STONE SHALL BE SOUND, TOUGH, DENSE. AND RESISTANT TO THE ACTION OF AIR AND SHOWN. A MIN. 3' OVERLAP SHALL BE PROVIDED WATER. STONES SHALL VARY IN WEIGHT FROM 25 TO 250 LB EACH. AT LEAST AT ALL SEAMS ALONG LENGTH OF SILL, 60% SHALL WEIGH A MIN. OF 100 LBS EACH AND NOT MORE THAN 5% SHALL WEIGH LESS 50 LSHORELINE STABILIZATION TYPICAL SECTION LESSER WEIGHTASTONESBSHALL BE PLACED IN THE INTERIOR (CORE) AND C;0CATnNASNOTED NOT TO SCALE HEAVIER WEIGHT (150LB+) STONES PLACED ON THE EXTERIOR (ARMOR). 1� PROPOSED PLANTING TERRACE (AS REQUIRED) UTILIZE CLEAN NATIVE SAND MATERIALS OBTAINED FROM MINOR REGRADING OF THE UPLAND SHORELINE. ACHIEVE A FINISHED GRADE ELEVATION OF -0.5' MSL± OR ABOVE TO CREATE A SUITABLE SUBSTRATE FOR THE ESTABLISHMENT OF WETLAND VEGETATION. (y -165 PCF) ( IN FEET ) x 1 inch = 30 ft. to � n m SALTMEADOW CORDGRASS (SPARTINA PATENS)* Cn PLANTED ON UPLAND SHORE x m ABOVE MHW TO EXISTING VEGETATION LINE. < AS REQUIRED A Wlhq, jAhi 1a.4o `\ / ORDUP SECTION \ SECTIDN AA I FIRST LINE STABLE NATURAL VEGETATION ELEV. RANGES:2.5'-5.5± (OBSERVED 9-9-09) I PROPOSED RIPRAP SILL AVG. CREST ELEV.: 1.0' (SEE DETAILS THIS SHEET) LANDWARD TO I MHW LICF SHORE J 30'± I'Roi I I I I X MEAN HIGH WATER ELEV.: 0.50' ~-- -7 Ar rlVJA. LVWCJN Low wATEFi ELFv.: fAVERAGE SEAWARD TOE: BOTTOM ELEV.:-1.3•I. 160.00 180.00 2=00 220.00 240.DO 260.00 280.00 300.00 320.00 340.00 360.00 Q of •r o ti T N C) o 3 v r c rn Eo z a On) c U •m co I ° WU o Etta °N _r I o 'D ¢ M wN Onz-ox to N TN 1 In a 1 P V) sf kr o E YTA.aJti F! 0 C wwoa e C:�'��I IV w Lj �0 �5ozw` � u C) N �a t� C? a0 f~ ® ol��o a u O U H C14 H �,} Lo Q o J�••t � F p w Imo,, .. r"1 ei oC� �U .a uzP 4 0 a, z Q Z 0 Q U � z jLw WZZ o Lli Ix O � 1 V Cn r 1 Q a m Cr-d-C I.H. Z o D. Or- tF w U1 LL LL c� CO Z q&TA€t � � o 10-28-09 1 "- 30' DESIGNED: CHECKED: BPG MSS DRAWN; APPROVED: DMK BPG SHEET: 2 3 or CAD FILE: 4389OOB 1 PROJECT NO: 4389