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Sheet No.
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ENGINEERS i PLANNERS 1 SURVE
111 MacKenan Drive Cary, North Carolina 27511 tel: [phone] fax: [phone]-6008 www.withersravenel.com

TOP OF DAM 371' PRECAST TOP >T TOP SLAB W/ GRATE MANHOLE COVER
. SEE DETAIL BE x i~., 3'X3' PRE ~ 4" CLEANOUT PLUG e ~ o TAIL BELOW (OFFSET OVER STEPS)
r ! - ~ ~ ~ t t ~ r ~ ,X + I 4
I + 1 i + J ~ X3' PRECAST RCP BOX 5' X 5' RCB
~ , ! w ~ ~ 1 I f ~ ~ i ' 6' VOID SPACE JUNCTION
1 / ~ ; " ; ~ i ,'X ~ WEIR CREST 370.5 e . a ! ~ BOX
i , f n ! ~t i ~ I I i ~ i t ! - ~ t I j ~ i ..r.+ ...rte ? \ 1 ~ , ~ 1 , t ~ 1 • { ~ J II f / I ! ~ . ~ ~ ELE STEPS 12" O.C. ELEV.=377.00
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r ~ l i ± , ~ , 1 ~ i OVERFLOW WEIR
~ 1 ~ , 1 , i ! I . ' ~ PLANTING BED
ti.~r 1. 1 t ~ ~ ~ I I N ~ I ~I k ~ ~ ~ , , JOINT SEALED WIT ~ ~ ! ~ ~j ~ ° ~ ~ GASKET CAST IN INI I i ! TEMPORARY SKIMMER ATTACHMENT , . ° ' GROUT EACH SIDE cD WITH A-LOCK NEOPRENE ELEV iT IN MANHOLE WALL ~.n ELEV.=372.00
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III RCP DISCHARGE 6" 30.O-RII 30" CLASS 111 RCP CLASS II V.= 7 12" RCP TO BIORETENTION FOREBAY ~0" O-RIING GASKETE TO
a ~ , • + II ! ! 1 r , ~ o0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 e~ :LASS III RCP BYPASS
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~ ~ t ~ ~ , , ~ >r ~ t ~ i ~ ~ ~ / 1 ~ , _I..~?R ; ~ NTS - SECTION A-A SPLITTER BOX ~S x
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1 ~ r j f a. ! ~ ~ t J ~ l SURFACE 370' DOUBLE SHREDDED HARDWOOD MULCH
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1 J` , ` ~ r ~ I t r ~ i , r t 1 i + j 1 ~ l 1 , i t ? ~ 1' I j ~ I i STEPS ~ DRAWDOWN VALVE 3-576 ORGANIC MATTER
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~ ~ r 1 l i ~ ; f 1 ~ r~! ! f ~ r ; . ~ , , ~ 6" VOID SPACE ELEVATION SECTION WS OF 3" HOLES
~ ~1 t r r f ' I ~ ~ ~ j t j f PRECAST REINFORCED BOX 2(100 PSF MIN. MOM 8VARTER
+ Ir f C r f fi t t• I~ j r 1 1 r ii ! ~ I BARING CAPACITY SEE BMP SEC s BENEATH COLLAR POINTS 2" O.C. NP SECTION FOR SIZING DATA SECTIQN B-B BIO-RETENTION
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~ ~ ~ ~ , -~M- r ~ i E ~'a ! ~ i TYPICAL ANTI.-SEEP EP COLL~4R
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1 V 1~ ~ LA~3 V C I AI L 40-WADE. PHASE II ROADWAY BMP 9A
Nrs BIO-RETENTION CALCULATION SUMMARY
MAY 21, 2007
1 AREA 1 AREA 'C' 'C' X (SF~ (S TOTAL DRAINAGE AREA 186872 0.70 130 V X AREA
(SF)
1"=40' 130811
15% BIO-RETENTION AREA g 6541-
M /Rti J PROPOSED 81 DIMENSIONS ELEV. 81,00
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Y 9 , .r ,.1y1M, / I +.1 .,w.~v.. ..nl.' PRUNE ONLY TO REMOVE ANY
1 ~ .rr . \ ry ~ ~ BROKEN. DEAD OR DISEII8ED WOOD VYHY:E PRES~iVHrG FORM
v j? V ~ r..w'. MID f~1ARAC1'ER OF TREE; DO NOT CUT LEgDHt; DO NOT PRUNE
~ . •..I.^"n T"r.~ M.r t , t I IN ORDER TO REDUCE CANOPY SIB. NOTE: RISER BARREL ~ SURFACE OF BIORETENTION 8,100 SF 370.00 BE INSTALLED ~RREL, SKIMMER AND OUTLET PIPE SHALL
'1, p v~ CUTAND REMOVE TOP 1/2 OF WIRE BASKET, TURN GOWN 7~OP 1/2 OF BURLAP; REMOVEALLCORD37WINE BOTTOM OF BIORETENTION N/A 366.00 OF OVERALL S ~TC~ TOP OF DAM WIDTH 5 FT. 371.00 UTILIZED AS A TOP OF B/V.LAS DLIG ?LLED PRIOR TO THE BEGINNING
ALL SITE-'GRADING AND SHALL BE
4 - s ,,,,,,,,,r ~ DE(iRADEABLE WT RAP ~ U$ED, 1 ` i~=-- _ ~ ,r ~ REFA~VE TOTALLY. AS A SEDIMENT CONTROL DEVICE
2-a" SFNiEDDED BARK MULCH, ANTI-SEEP COLLAR 36"x36" N/A DURING ROAD ~M~N~MUw+~rnuNK ONCE SITE HA ~N• (DO NOTPIACEMULCHIN UNDERDRAINS 2-4" PERF. PVC 366.00 ROADWAY AND UTILITY CONSTRUCTION.
r / v ~ .~-r.., - , ' •-1 \ may. ' I ~ : / ~ / r / ~ ROOT BALL (OPTIONAL)IICER A OF ~ REMOVE PRIOR TO ONE YEAR INSPECTION. rE HAS BEEN STABILIZED AND GRADING
~ ~ it d Y ~ ` `.~-...,,w- • t p ~ ? r Sri CONTACT1NfTHTREETRUNK) IS COMPLETE uwv~neN~oeo~c~iu WEIR OF OVERFLOW RISER 3'x3' RCP BOX 370.50 OUT AND STAB BREAK UP EDGE OF PLANTING PIT. LETED THE BASIN SHALL BE CLEANED
_1 ~ NATURAL SOIL UNE STABILIZED. THE SKIMMER DEVICE
y~ . 4 . P. Q d, ? ~ , o p p e~? ' D > . , v. v J-~ . , . o • ' ~ ° / . v TAMPSOILSOLIDLY /1ROUND OUTLET PIPE INVERT IN 18" RCP 366.00 SHALL BE REM REMOVED.
~ M - ~ - _ ~ .M \ BASE OF ROOT BNLL
• ~ ~ ,rte ~ LEAVING SOIL PEDESTAL UNDISTURBED. ROOT CROWN OUTLET PIPE INVERT OUT 18" RCP 365.00 sww. ee
\ _ ~ ~ e~os~nrio z~ INCHE8ABdVE
- \ ti GRADE r---~
0 ~ ~ ~ ~ DKi YVIDE. SF ~ WID7F1¦3 X ~ j J~~'-7~ TREE PLANTING 3 WIDE. SHALLOW PLANTINf3 HOLE IID7H¦3 X WIDTH OF ROOT BALL
\ ! ~ \ T ....r. ~ , ~ ~ PLANT LIST
ROOT
/ 1. CONTRACTOR Ti0 VERIFY TFIATADEQUATE DRAINAGE E x i 2. DO NOT WRAP TRUNK OF TREH. LINAGE IXI3TS PRIOR TO PLANTING. QUA. BOTANICAL NAME S ~ ~ 3 ACER RUBRUM RED MAPLE 2"-2.5' 10' MIN. B KCEPT ON WINDY SITES OR FOR LARGE EVERGREEN TREES. IF STAKING IS DONE, 4 BETULA NI(3RA RIVER BIRCH 2"-2.5' 10' MIN. LD BE USED AND MUST BE REMOVED ATAPPROPRITATE TIME. PROPERN OWNER IS 3 NYS$A SYLVATICA BLACK TUPELO 2"-2.5" 10' MIN. ED OR DAMAGED TREES. 3 QUERCUS NIGRA WATER OAK 2°-2.5" 10' MIN. ~ fl3 8ET FORTH IN THE MOST RECENT AMERICAN STANDARDS FOR NURSERY STOCK 231 ACORUS CALAMUS SWEET FLAG B&B
~ 3. STAICIN(3 OF TREE318 NOT RECONMd1ENDED, IXCEPT ON ~ ~ / FLEXIBLE STRAPS -NOT H06E MID YVIRE - SFIOIILD BE US r~ RESPONSIBLE FOR REPLACEMENT OF DESTROYED OR W 4. ALL TREES SHALL CONFORM TO THE STANDJIRDS 8ET F ` ~ PUBLISHED BY THE AMERICAN ASSOCIATION OF NURSERY / / ~ ~ ~ %J X 5. TREES WITH ROOT FLARE COHERED 8Y, MORE THM11.5' B&B
/ ~ ~ y ~ .w.,, h.Irw:. 4.m+M°. !^1Fr_; M+M`w wM~ w'~? y W */w.wla ~M F B&B B&B
4 NURSERYMENT (AAN.} 243 PANICUM VIRGATUM SWITCH QRASS 12"-18" C THM11.5.OF 301E WILL BE RE.IECTED PRIOR TO INSTALLATION. 239 RUDBECIgA HIRTA BLACK-EYED SUSAN 12"-18" SPECIFIED WILL BE DONE BY THE TOWN ARBORIST TO ENSURE THAT TREES WERE CONT.
~ . - Y, ' ` / / 6. A ROOT COLLAR EXCAVATION FORALL TR~8 8PECIFIED CONT. CONT.
. - ~ ~ . ~ j / NOT PLANTED/GROWN TOO DEEPLYATTHE SOURCE (NUR RCE (NURSER1n. LANDSCAPE CONTRACTOR SHALL HAVE SUPPLIER MARK GROUND ~ C'~~ INI~ERRY 24•_30• C ' DETERMINES THAT THERE 18 EXCESSNE SOIL OVER ROOT CROWN, THESE TREES ~ VIBURNUM DEMi4TUM VIBURNUM 3p"-36" C 8100sf = 0.19 AC " 400stertrelAC = 76 stems CONT.y
F ~ ~ - ~ / ~ r ~ / WILL gEUN CAB ~ ROOI'BALL. IF CI7YARBORIST DE7'ERMI i CONT. _ 4p kz* r .1L . ' ~ t]j~i(L
_ - ~ / SET TOP OF ROOT BALL 1 "-Y ABOVE ~1 4 7
o ~ - FINISHED GRADE. LANDSCAPE MAINTENANCE - BIORETENTION AREAS 20o
N ~ a ~-.r 1 / ~ / ~ ' FOLD BURLAP DOYVN ~MD - _ / ~ GROUND. SET TOP OF BALL ~ is' ~ ~ i FLUSH WITH FINISHED 2~-~" SHREDDED BARK MULCH - DO NOT p~gNT BEDS AND SMALL ORNAMEPITAL TREES
_ = ~ ~ GRADE. PLACE At3lUNST TRIMIK. LEAVES
r 'M+Mn+, .xwnww ~In~wwr w~w,wu _._,."'-1 ~ ` ~ - ' 72 S~VIT~H-GRf?S3- ~ ' RN~~BI~tEH ~ ~ _ ,F ~ BACKFILL• AMEND THE TOP 6' 1)ALL PLANT BEDS W~L BE SPRAYED/V~ N~ BY WIND 1)N.L LEAVES YVILL BE REMOVED FOUR TIMES AYEAR F CONTAINER GROWN PLANT -PULL ROOTS TO MAINTAIN TI1EM F'F~E OF ~ ATALL TIME8. p~,gNi gEpg, LEgyES MpY BE PIACED IN ADJACENT W OUT OF BALL, OR CUT SIDES. 2~,u.~. s~~tues vnu ee ~rrn~¢~ o~ ~ o~x wrrH n si.ow- ES AYEAR FROM THE
Ay ~4..w y.M~1,~w rMr~y +~hy? flr~? r.~,,.n. - r,,, ~ wr. ~ _ 51 BLACK-EYED SUSAN, , ~-y~AT~FR'OgiF / BY INCORPORATING 1•-~.s DDJACENT WOODED AREAS.
_ _ ti.,` _ = 3¢'SWEET FLd~ ~ ; ' COA~OSTED GORUND BARK OR OTHER SUITABLE FIIi~A PEDESTAL UNDER ROOT BALL. ~~~E FERTILIZ9tATARAlEA000RdNO TO PIANTTYPE. NATURAL AREAS
_ ~ 3$~S~JVEETFLA'G._._ 3 ~j l,. ~ "S5 SWITCH^GRA~S i oRC~wic Mnr~ oR - ~ PROVIDE NATIVE SOIL WITH 12" DEEP - CULTNATE ENTIRE 3) ALL TREE8 WMl ~ FERTIL~LD ONE TINE ONLY BY DEEP ROOT °ppp044000°40°a tEE OF BRUSH AND 0004 CAR aaaa
0 _.,...w ,~..M 'rte - ~.BC~C~K:T~l1P~EL0_ _ . . ' ~ nM~s%HUM~~nnr~x. PLANTINGAREAASSINGLE ~~~TMASLONf-R0.EPSEFERTNJ~R ~~NAT~RALAREASWNJ-BEt~NTAMIEDFF~EOFBRU 4) ALl8HRUB8 AND 7R~8 WIS. 8E PRUNED WITH HAND PRUNERS WffD8 WITFNN THE FlRBT TEN FEET OF THE NATURAL BED. WHEN PLANTING MULTIPLES roe ce c~aowrHnria rove o~?o ~,a~au~. iE NATURAL AREA. ovo N 000000 0 o Q~ o° °ooO<< o ooo°D~-S$/o%
-tom _ (FOR LARGER-SHRUB ROOT BALLS, ~ REPIACE DOUBLE S~EDDEO WIRDWOOD MULCH OI~TOIWO 0 000
~ , U :~,qG 108 BLAY:K~YfD ~U~Alti. ~ - ~ - - ~ - - n ~ OF PLANTING PIT. MAKE 4' DEEPER THAN ROOT BALL.) B~~i~~~ ~r ~rr~ ~oc3w~,M wiu 000 as SEAL o 0
_ J ~j LJ / i ~ / 1. ALL SHRUBS SFIALL CONFORM TO THE STARS ` ~ f ~ l ~ ~ FOR NURSERY STOCK PUBLISHED BY THE AMERK'.lW _ ~ - i l 2. SOILANALYSIS SHALL BE OBTAINED 4NDARDS SET FORTH IN THE MOST RECENTAMERICAN SATNDARDS eE Esrnei.~o,era µEerrEO. ~AERICAW ASSOCIATION OF NUR8EYMEN 0 a n o 26471 0 o
~ ~ ~ Q , ~ - - - - r f _ ~ 3. SHEET PREPARATION OF BED313 HIGHLY PREFER " " _ - ~ - - - ' _ ~ SHRUB PLANTING B - - / l / NOT TO SC~4E S pa
.,.,t... _ PREFERRED TO INDNIDUALLY DUG HOLES. 000 °ooo ESQ` ~~oo0 000 00 ~ 7
ITING BED as 8R' , 000
°°0 00 4
0 ¦ M ~ G.O,
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:4 No. Revision Date By Designer Scale Sheet No.
0 1 COR 1ST CD REVIEW COMMENTS 3/2/07 CSJ w&R ~"=50' WADE
~ ~ 2 COR 2ND CD REVIEW COMMENTS 3/30/07 CSJ Drawn By Date Roadway Construction Phase 2 BIO--R-.,E )RETENTION BASIN W1TH-ERS RAV kv ~N L
N CD 0 3 COR 1ST EC REVIEW COMMENTS 4/18/07 CSJ MFC MAY 2007 NN~~ Wexford Developers LLC URVEYaRS
a o~ o ~ 4 IC Chocked By Job No. OR 2ND EC REVIEW COMMENTS 5/2/07 CSN Y ~ 5 COR 3RD EC REVIEW COMMENTS 5/21/071 CSJ Cs.~ o2oaoas7.lo RALEIGH, WAKE COUNTY, NORTH CAROLINA BM P ~9A ENGINEERS I PLANNERS 1 SURV 111 MacKenan Drive Cary, North Carolina 27511 tel: [phone] fax: 919-467 X19-"7 008 www.withersravenal.com
--l i
6 COR 4TH EC REVIEW COMMENTS 5/31/07 CSJ
7 COR TRANSPORTATION COMMENTS 6/11/07 CSJ

i 1 j / \ , 1 1 17
r ~ C~ . 1 I j , f f ~ 1 / •1~'` i ! r i ~c . J f 1 1 1 f r / ~ ~ r ~
l f r > 1 !
' ! 1 ! r a, / /
r / / / ~ { ~ r / I PRECAST TOP SLAB W/GRATE
rt ~ i ! ~tl~ r , / `vim ~ ! ,
i ~ / r I ! rf ! ~ 1 r ~ ! i 5'X5' PRECAST RCP BOX
f / i VOID SPACE
1 f r ~ 1 ff 382.00 CREST 6" MINIMUM
1 ,f ; ~ ! , I L / f' f,
! % ~ . ~ ~ I 1 NOTE: ~ PLACE STEM SUPPORTS
1 r'" r"'" j 1 ~f ~ ~ + i ~ ~ AT 3' FROM BASE
/ r~ ~ / f / / 1 1 / 1 1 f ~ / ORIFICE OUTLET JOINT SEALED WITH A LOCK NEOPRENE
~ ~ ~ ~ it i ~ f 1 380.50 PERMANENT POOL ~ GASKET CAST IN MANHOLE WALL
...,1 ~ 1 ~ , ,J`' J f if ~ l ~ 1 f j~, ~ l / i ~ r ~ 4'x4" TEE 4" NRS GATE VALVE ~ GROUT EACH SIDE
J/'I ! .J ~ J ~ v i
~ 1 ! TEMPORARY SKIMMERATTACHMENT
f ~ ~ 1 l . ,r' r'r ~ ~ .1. ~ FOR EROSION CONTROL ~
,r , 1 6'x4" TEE 'O-RING GASKETED 377.50 DRAWDOWN OUTLET CLASS III .RCP
,A'` f
J / r v.+' ~ I PAVED INVERT GROUT 6"
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r'° ~ { ,
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' ,l , ; ; ~ ; i / NOTE: 4" DIP DRAWDOWN DEVIC WITH BOTTOM DRAIN AND GATE RISER & DRAWD4WN QEVICE DETAIL J DEVICE SHALL BE CONSTRUCTED
•1 1 ~ : ~ ~ j f J J ~ ~ ~ i I l - NOTE: RISER BARREL, SKIMMER AND OUTLET PIPE SHALL GATE VALVE IN THE RISER.
+ . ~ ~ ~ ' ` J ~j ~ r'1 ~ / / ! ,1 / r i BE INSTALLED PRIOR TO THE BEGINNING ~ ~ ~ ; ~ ~ 1, j f Q ~ ~j ~ ~ ~ .i I J ; / ~ i ! ~ OF OVERALL SITE GRADING AND- SHALL BE
, ~ / ~ ~ ~ ~ f~ ~ I ' ~ ~ l ; ! 1~ i ; UTILIZED AS A SEDIMENT CONTROL DEVICE
r r t ~ 1 ti ! f l ~ ~ ¢ 1 ~ (r' ; DURING ROADWAYAND UTILITY CONSTRUCTION.
1 1) i 1~f ~ / . / ~ i 1 ~ / ! / / r r / ~ ' ' ~'~~~T ; I ~ r ~ ONCE SITE HAS BEEN STABILIZEDAND GRADING
. M 1 ~ ~ i / .II. ~ ~'~~w.M f i ~h J' ~ 1~~~~i ,f / ~ ! ~ ' rJ~ fl ~ IS COMPLETED THE BASIN SHALL BE CLEANED
/ , ,l r ~ , / . ~J / .r' f i ; OUTAND STABILIZED. THE SKIMMER DEVICE ~ ~ ~ ` ' ~ % f ~ / ~ ~ ' ` ; j " , ~ SHALL BE REMOVED.
! ~ 1 f ~ ~ f' rr~ ~ J ~ /
~ r ~ f { , , r i .r, ~ ' / / ~ / J / i ~%"i;'' l 1 ~ /sf ~ /r 1 ,
~ J , 1 • 1 1 1 ~ / j, f . ~ - ~ ji ; ~ J f ;i ~r'! ; ~~Xl CLAY LINER NOTES
W / 1 ~ A - 1 1 I 1 1 Y 1 1 ,I ~ J . r~ • m•n M.wn 111 f,y l' •1 1 1 ~ y1 1'' r / / 1 Y , / / ~ j1
~ ' x ' - - ~ ~ The day liner for the pocket wetland sh~l be at least 12 inches thick and mee v , ' ~ t ' , ' ~ %t ~~(~n ~ ~ ; +l ' X % \ the following Specc~fications. ~~,a ~t
2Q CITY 0~"~ ICI-h - ' 1 .~I / +M"•" ~ 1 1 i 1 11'1: „r.~ ~ .M ` : ! RCP RISER
UTI LiTY NT ~ ~ 1. I , f l - = - 1 EP~SEf~E _s ,.r"' I 1 1'11 • 1 r ,y~~ / I / 1. 1 1 • ~Y• ~ , 1 • I, , ~ .+FI rr "r , ~ ISM., .I , J•",.l a on ' ~ k' 1~~ r r'~'~ ; ~ \ - Unified Soil. Classificatbn ~y:~ Designation of CL. CH. ML, SC >C TEMPORARY SKIMMER FOR
m"M`. ,,,r+' " . t / 1 1 1 1 11~ ~1'1 1 w•w•w 1'•I ~ ~.i n++ ~ / : -~~,k ~ ' f ` ~xk~' - Minimum of 4U% passing Zt sieve r`~,,%,.,~ ~ ,~~'f x\` ~ _ Minimum plastis~ty index of 12 r~. x ` ~ ' ~,~y-i- Maximum particle size not to exceed 1 inch EROSION CONTROL ONLY MIN. TOP O WATER LEVEL DURING STORM TOP SLAB 100 YR. EL bed by ~ ~ ~ ~ TOP OF DAM EL.= 385.00
6 s~~k: , ~ ; _ Maximum permeability of 3.5 X 10-5 cm/sec (0.055 iNhr)
: - : ~ A minimum ~ 2 tests of each above parameter shall be cornpletied by ~ - ~ . - ~ the Contractor on the liner material and p~rrted to the Engineer fnr ~ fnr YR. EL= 384.00
/ .r rte' / 1 rr..~ ,:4r ~ . ~ i ~ . ` apProvaL
~ ~ rte" / 11 ' . f , ~ - ! ~ - - Compaction to a minimum of 93% per ASTNI D688, and within 0 m 3% ~ , i% of the optimum moisture oo~ent (1 compaction density test per 2500 2500 ~ ~-I I - PEAK FLOW ATTENUATION POOL - 'I
~ ...e ter' ~ ~ .i ~ R~11G4TC-S
R.~11~ 'SA T,A~1~~Sf~Y R , ~ SE ~ ys y-, % . ~~~j0 The day liner shall be placed under the bottom of the wetland and under the MINIMUM SLOPE 3: 1
-1~ ACCESS EASE T - ``t .ter J ~ side~~ to an elevatbn of 366.3 ft on BMP 9Aand an eleva~fon of 375.8 ' _ ~ ! r=_-.-,_--..:..~ _ on BMP' 9B. A minimum ofi 8 inches of topsoil shall be placed. on bop of the ~ the ~ ~ ~ I I-I I = = PERMANENT r MI 375.8 I I ~ ~i _ POOL -i I~
A . •1. / „ f ..tip I' ,r.•^ ~ ! ..r ~ ~ ~ - m f day liner, the to of the topsoil shall be the finished gr~ade as shotim on the =f_~Ili = _ ~ III _ =11 n the EA I_~_ - DEARTH DAM
~ff/~ . ~ , A nDot~ n~Cture~o damatails.the c~laS I Warta taken when iradcing in the topsoil to
.i CLAY LINER (SEE NOTE TO LEFT ~ ~-'I I - ~ ~ ~ -I I 23" DIA. CLASS 2 RIP-RAP
iyi\ { DISSIPATOR PAD
rJ~ ~ ..r h ~1! 1 i ~ ~ WITH LINER
`,1~ i;~ ~ _ .27" THICK.x 30' LONG
~i~,~ ~ q,=50.23cfs,
ANTI-FLOATATICN~i DEVICE ~ ~ -I ~ I~ I Ii i I I I~ i - Vo =I8.36ft/sec
D i M E N S I 0 N S E L E V, ANTI-SEEP COLLAR -~j' . .
NORMAL POOL 20181 SF 380.50 i i I=1 I I=1 i1=
POND BOTTOM 12,334 SF 377.50
TOP OF DAM WIDTH 10 FT. 385.00 55 LF 30" 60" x 60" N/A ~F 30" RCP @ 4.55%
ANTI-SEEP COLLAR
DRAWOOWN ORIFICE 3" ~o.~o CROSS SECTION
n _ 50 ~ TOP OFANTI-FLOATATION LION 7'xTx2' 375.50 NTS
WEIR OF RISER 5'x5' RCP BOX 382:00
OUTLET PIPE INVERT. IN IN 30" RCP 377.50
OUTLET PIPE INVERT OUT OUT 30" RCP 375.00
PLANT LIST -SEDGE COMMUNITY
QUA SPECIES COMMON NAME ROOT SPACING L TI N
MIX OF:
400 Iris virginica Blue Flag Iris Pmt Pot 18" o.c. Normal Pool to High Water
400 Lobellia Cardinalis Cardinal Flower Peat Pot 18' o.c. Normal Pool to High Water
400 Hemerocallis x'Stella D'oro' Stella D'oro DayNilies Peat Pot 18" o.c. Normal Pool to High Water
PLANT LIST -SHALLOW WATER EMERGENT
QUA SPECIES COMMON NAME ROOT SPACING LOCATION 2000 Pontederia cordate Pickerel Weed Peat Pot 18" o.c. High Marsh
2~p Saururus cemuus Lizard's Tail C1uaR Cont. 1 B' o.c. Him Marsh
PLANT UST -DEEP WATER
QUA SPECIES COMMON NAME RnOT SPACING LOCATION ~2" UTILI' O.C. EACH WAY INGL GRATE OFF3ET OVER TO B STEPS S DRAWDOWN VALVE 1/2"PREFORMED JOINT BY ci FILLER,12" WIDE APPR . ~ SO IN WRIT EASE AGCE UTILITY INSTALLATIONS AND. OTHER PUBLIC UTILITIES INCLUDING SIDEWALKS.:AND HANDICAP RAMPS ARE
900 Nuphar Lutea SpatteModc 1 Gal. Cont. 18" o.c. Low Marsh GRATE TO' BE CONSTRUCTED ON ALL.STREETS AS SPECIFIED
STEPS BY CITY CODE. THESE-.FACILITIES HAVE BEEN APPROVED BY THE: CITYOF RALEIGH AND SHALL BE
SO INSTALLED: UNLESS A CHANGE IS'AUTHORIZED BY
WRITTEN -APPROVAL..: PUBLIC. SANITARY SEWER
EASEMENTS ARE TO BE- RECORDED: PRIOR':TO FINAL ACCEPTANCE.
TRAN 6" PRECAST CONCRETE PuB~ TOP SLAB W/GRATE TRANSPORTATION SERVICES
HIGH MARSH [0-9" BELOW NORMAL POOL] (35%) - 7,063 SF 6w PUBLIC UTILITIES
CON PLAN p CONSERVATION ENGINEER
o LOW MARSH [9" TO 18" BELOW NORMAL POOL] (35%) - 7,063 SF
L 6" VOID SPACE PLANNING
OPEN WATER [24" BELOW NORMAL POOL) (30%) - 6,055 SF
m P TOP SLAB DE NTS PRECAST REINFORCED BOX
s a ELEVATI~1 SECTION
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0 m sEN~?n~ cou.NR $ ao QQ ~ o a SEAL S o e
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U DETAIL TYPICAL ANT1~~-ESP COLLIER °oZ % o° Qo 000 ~i °ooa Q` b~o° 400
t6 °o°~j°oo GINE~oo 040
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0 1 COR 1ST CD REVIEW COMMENTS 3/2/07 CSJ w&R =50' Roadway Construction Phase 2 CONS Wexford Developers LLC INSTRUCTED WETLANDS WBMP #9B ENGINEERS I PLANNERS 1 5UR 111 MacKenan Drive Cary, North Carolina 27511 tel: [phone] fax: 815-467 MEMMMEN"m
2 COR 2ND CD REVIEW COMMENTS 3/30/07 CSJ Drawn By Date
o a ~ a 3 COR 1ST EC REVIEW COMMENTS 4/18/07 CSJ MFC MAY 2007 o s 4 COR 2ND EC REVIEW COMMENTS 5/2/07 CSJ Checked By Job No. S U RV EYO-:R.S
N Y 0 5 COR 3RD EC REVIEW COMMENTSL 5/21/07 CSJ Cs.~ o2oaoas7.lo RALEIGH, WAKE COUNTY, NORTH CAROLINA ;:919-467-6008 www.withersravenel.com
6 COR 4TH EC REVIEW COMMENTS 5/31/07 CSJ
7 COR TRANSPORTATION COMMENTS 6/11/07 CSJ