20001530 Ver 1_Site Plan_20020201 (2)

S-84-2000
INDEX OF SHEETS
pVERALL STORM WATER MANAGEMENT POND PLAN SHT i
SITE EXTENDED ORY DETENTION POND LOT 1 SHT 2
EXTENDED DRY DETENTION POND LOT 2 SHT 3
LEVEL SPREADER LOT 6 de LOT 8 SHT 4
-N-
D~ EXTENDED DETENTION WEl1AND POND 1 LOT 7 SHT 5
M WATER MANAG STOR ~ GMENT PON ENDED DETEN110N WERAND POND 2 LOT 7 S~ 6 EXTENDED DETEN110N WETUND POND 3 LOT 7 SHT 7
EXTENDED DEIENiION WETLAND POND 4 LOT 7 SHT 8
- RALEIGH, N. VICINITY MAP I - N~ C. EXTENDED DEIEN110N WERAND POND 8 LOT 7 SHT 9
EXTENDED DRY DETEN110N POND LOT 8 SHT 10
EXTENDED DETENTION WETLAND POND LOT 9 SHT 11
EXTENDED DETEN710N WETLAND POND i LOt 10 SHT 12
EXTENDED DETENTION WERAND POND 2 LOT 10 SHT 13
EXTENDED DETENl10N WETUWD POND 3 LOT f0 SHT 14
SCALE~ N.T.S nor to
LOT 11 }-LOT 13
I N.T.S Z__~a.
~ LOT 12
- - -
~mw?~ow oanMC~s
~c a~.~w aa~~ ~v it is we cne~ar a ~ LOT 1 A ~QsL 8
Nq 1i Ml~Im N 71!! MN4 S Il~E ~ . ` ,,is
VI~AQ aOW1116Ra ~ .
nFlIIC Fnw~idllS MMdt A M!I OF 11Ot ~ I 4f'~~ ~
HIt1AE iG IOIM ~IU p1Y ~M A01ML'E a 6M~p ~ ~
Cp61F4C11p6 /LL IE4lT N M a IOfSNY 1~4 MO I ` !i
a~ ~spwmai a,wr Mme a? sdor r~wne Mor rss+m ` ~ A lE4A.T OF iMS MD/ipplOr FM1/C ~..:.~rra+a~a''
F7111A[ W dIL idt MqL A OOMb71~W ,INIE /
SpYDYgS Ml. 1~4A ~.E Flldl ~ ,~p
M AE pIV fM IIYNNL ,?{l
~ \ %
LO S., ~ O
1
~~P
L
i ~~G
LOT 5 ~
j;' ~ ~ ~ ~J5
LOT 4 LOT 3 ~ .i
i /i
/
LECaEND /
DESCRIPTION EXISTING PROPOSED EBENEZER CHURCH RAAD (SR 1647)
2' CONTOUR INTERVAL - -
10' CONTOUR INTERVAL
PROPERIY UNE - - - - - - -
ROADWAY CENTERLINE
OWNER
RicHr of war uM?rs - - - - - = PREPARED $Y' ~Y
E4SEMENT LINE -
CURB & GU)TER HIGHWAY 70, L.L.C.
SANITARY SEWER FACILITIES -
STORM SEWER FACILITIES W' T H E R S ' R WATERLINE ~ RAV E N E L 3209 GRESHAM LAKE ROAD
SURVEYOR 5 SUITE 158-160
FIRE HYDRANT ASSEMBLY Q~ ENGINEERS I PLANNERS I S U e RALEIGH, NORTH CAROLINA 27615
1 FENCING STRUCTURE -o-~- 111 MacKenan Drive c mcounuc• /of0155fi-4310
ary, or D NIA
z WOOOSLINE o 19-467-6008
WATERWAYS NIA tel. [phone] fax: [phone]
a www.withersravenel,com ;om
o SILT FENCING
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0 0
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O
O S O
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NOTEr THE OPERATION AND MAINTENANt,~
I I I I i I I I I I I I I I I AGREEMENT EXECUTED BY THE OWNER SHAH
BE CONSYDERED PART OF 1HE STORM WATER
MANAGEMENT PLAN, ALL DEwCES HAVE
BEEN DESIGNED T~0 REMOVE 85X TOTAL
~ riz.. c~_ .ra_ r.:__ ,u, I~__ rl. ~r~~l~_. 1.~1.. r-, ~ I:~l . Iw!.. I I I I~ ~I~ ~~If I' 11 I ~I~ li ~I~...~I~ II I SUSPENDED SOLIDS (TSSj IN ACCORDANCE
I ~ f ~ i i l t ~ E. ~ L 1 INTH 1HE MOST RECENT VERSION OF NCDENR STORMWATER BEST MANAGEMENT PRACTICE
~ ~ t ~ i r_ ' ~ ~ -h k- k.~ ~ ~ k~ k:: k ~ ~ 1 kN~ MANUAL.
SinME MOON DRIVE 401 WATER QUALITY CERTIFICATION ANO
. ADDIiIONAI CoNDInoNS AND NEUSE ~vER
BUFFER RULES, SEE DWq PRO~CT X01330
, 1 r ~ I ~I I i I .I I QC ,01530.
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o No. Revision Date B Designer Scale Sheet No.
° W&R AS NOTED S CORNERSTONE PARK Drawn By Date OVERALL STORI
STORM WATER MANAGEMENT POND PLAN WITHERS R"ENEL ENGINEERS I PLANNERS I SURVEYORS
C) JAC 11/28/01
o Checked By Job No. KALEIGH, NORTH CAROLINA 111 MacKenon Drive Cary, North Carolina 27511 tel: [phone] fax: [phone] www.withersravenel.com
U 111 200147

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PLAN VI _ N n _ DRY E'fE DED D ~ r
1=20

er
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RIP-RAP
o 0 0 0 0
Q o 0 0 0 0 ~ o -
M~IY E1. ~ ° OF e ,
98 o 0 0 0 o _ _ 0 0
- -e----__ a o• •
396 ° o • 0 0 0 000 0 0 o p° ~00°• , SHAlL $EED AND YULCH ~ WV1G
0 0 D( a e o e o 0• • {rLr~ 11' /11~LI1o7 11RLJIG ~ ~ILJIIR. 1J ARFAS
394 0 °o ee~0p0 ° 0 00 0 oe a ° o q~0 00 • 00 0 coasrRUCrloa ~ co~.E~ Sn.T ~
e RE~WN IN PUCE U1V111. GRASS F41S BECOME E5'ri16USNED.
392 • • • o , ° _
390 -
-
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386
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Summery Information
~D~QQ 11+00 Comeratone Park
Extended D Detention Pond -Tract 1 Slorm Qpeak Qpeak Max. Max.
F ~ In o~ WSEL Pond Storage reQ cY
- PROFILE VIEW SPILLWAY 2 20.98 20.98 438.30 1.075
t =10' HORIZ 28,30 28.30 438.45 1.075 10
1 "=5' VERt 100 35.41 35.41 438.70 1.075
a Elevations 392 ft.
0 Basin Boitom Elevation
iri Crest Elevation 398 ft.
0 N Top of Dam Elevation 'w1 ft•
NOTE:
0 Areas
5 OR 57 SCONE AS NEEDS 1. REPLACE D TO ENSURE WATER Permanent Pool Surface Area o sy.ft. AS NEEDS Drainage Area 4.85 ac. C
WN FROM POND. REMOVE WILL DRAW DO REIUOVE SILT FROM POND ~De 3.36 ac. Impervious Area
DES 25X OF POND DEP1l WHEN It EXCEE POND DEPTH SEAL
o
SHAH SERVE AS A TEMPORA 2. THIS POND MPORARY SEDIIUENT BASIN other Paremeters A TE ~ Hoff ib423
Z TIME THAI LOt 1 IS DEVE ~ UN11L SUCH Design Rainfall 1 rn, ru 1 IS DEVELOPED AND IS Drawdown Device Rock Frlter w ~I
~ A PERMANENT WET DETEI REtROFl1ED tO y~ IT WET DETENTION POND. wn Time R 'd. 46 hrs A Mrn. Drewdo 84 y
h 0.27 ac.ft. JAY ~ Min. Detention Volume Req d.
N Detention Volume Provided 1.075 ac.ft. ~0y
N
c 0
a Sheet No,
t~ 3
r~ F WITHERS R"ENEL ' NNERS I SURVEYORS
sr Uate B Designer
o W&R Scale AS NOTED TONE PARK o No, CORNERS EXTENDEI J ENGINEERS I PLA Cory, North Carolina 27511 tel: [phone] fax: [phone] www.witherara
o Drawn By Date v r JAC 11/28/01 1 venel.com 11 fdacKenan Drive
b Job No. o
S Checked By a JJJ 200147 RALEIGH, NORTH CAROLINA
U

_ ~ -
~ . ~ - ~

Summary n o _ -.V.., . , ?ummary Information
rstone F _ Come ;omerstone Park
Extended D ; _ Storm :xtended D Detention Pond -Lot 2
_ z eak Max. Max. Storm Qpeak 4p
Frequency - Out WSEL Pond Storage Frequency In
-1 r f , ~ {t. ac.ft. r. ~
---...._r___ 2 9 78 43$,40 0.512 VENT E THROUGH 2 12.51 SCREEN ACCESSIBL
' 10 17.52 438.59 0.548 R 10 21.38 D00
_ _ 100 19.34 439.22 0.674 100 30.09
NOTE:
SKIMMER MAY VARY
_._T _ SLIGHTLY FROM
_....T_ ' Elevations _ . Elevations ILLUSTRATION
m Elevation 434.00 ft. Basin Batto
_ IMPACr "r.._.._.__ ~ r„ J9 SF ' p' v tion 438.00 ft. Crest Ele a
^ Y-_~_ m Elevation 44U.00 ft. Top of Da FLOAT

V" Areas
0 0 . , / r Areas ~oA. I Surface Area 0 sq.ft. Permanent Poo
\ ~ ~ p C 6.90 ac. OUTLET END; CONNECTION
I / Drainage Area ET PIPE OR RISER BARREL PIPE LONGER THAN SHOWN 4.48 ac. To OUTL
_ - . ~ Impervious Area NOT INCLUDED WITH SKIMMER
. ' SUPPLIED BY USER
_ - _ ~
4350 Other Paran Other Parameters
. 1 in. runoff FLEXIBLE JOINT BY FAIRCLOTH Desi n Rainfall MANUFACTURED 9
~.T_.. wdown Device Skimmer Dra
_ 48 hrs. SKIMMER DETAIL Min. Drawdown Time Req d.
~4 44 'd, 0.365 ac.ft. N.T.S Mm. Detention Volume Req
r ~ fEI~E 18 RAP me Provided 0.441 ac.ft.
1,14X Detention Volu
? X01 .25X
r>~~.>. ~~~»>o:»r,.~,~ Lat Z Extended Dry Detention Basin
>.r>~~> ~ , 3" Skimmer w12.5" head
" Skimmer to Use.
fr lume to be Drained = 15,682 cu, ft. Vo
~ . o 0 ~-w.____ ERCW. [~T Flu, irk FES ' co~~ a _ Draw Down Time = 2 days
~ wEnfwa fMPACT > r , o ~ - o° IhN 433.00 !I ER WETLUJT AREA 594 SF . Orifice Area = 6.16 sq. in. 2.80 inches
> o Orifice Diameter
r 3 _ ~ .r,..... CUSS f~NIP w
wEnArro ~Ir~+ct . ATdR PA0 DIS~ ` ~ ~ 3 SF
_ ~ Q~, 12 Lx14'M~24b • ~ • ~ ~ ~ t wr:?LArro AREA JJ ~ ` ~ Q
FAr~1C USE FILTER ~ . P 10'1x5 ~
1111DERLN1tR ~ ~ G LEYFI " _ . , QP
IISE 900 _ . _
TO .
' - N PpND.- R1~ DETENTIO D
M _
-8--_-
441
---.0 Of
MO
442 - ~ -
mP o~ a-44o.0 ~38 -
440 1' ..DEra~~ ~
~ - - -
4d'I
NOTE
438 _ CpNTIbICIOR stw~. SEED AND 61UU;N Au 61aaRE 1~ _
~ ARCS WHERE PLANT YATER41l IS AREAS Is cow sur FENCE ~ ~ ~2 _
_ _ _ PLAt~D AFTER cam 434 > ~ ~ ~ PUCE LQVTI~ ~ Has ~y~yR~EYaNV _
- - r WTIIDLA7r~GV. lYY
,1,32 ~'441~i
418 _

2300 pa
428 4»- _ OISSIPATOR P 2 418
~ aq
_ 4 ~ ry ° o{ ~
w
p aQ ~ h
~ h ~ N
fO+BD 10+80 10+10 t0+4D
10+00
10+80 1080
10+20 10+40 10+00
- PROFILE I~EW DARREL SKIMMER
NOTE: ~'=~o' HoR~z
• GROOVE W CONFlNED BE TONGUE AND _ 1. 18 / RGP SHALL 1 "-5' VERT
LE VIEW PROFi p BARREL , , - 3 LATESr AN RISER TM C 44 KET MEETING AS • ~ 0 RING GAS
~ =~o HoRlz r. . ~ TM-C-361 LATES JOINT OF AS
1=5 VERT
,~a ~ rr
A A O.C. EACH WAY o
o ~ v~ "L R • ~ , ~ 1" INSERT' 17f 11WG 1
c w p o "j ~ (1YP)
i d o o TOP LS 10 CACE N 12"x1 IN FROM
p~ PRESSURE RELIEF ~ app ~ HClLS WY M HOLES 1/2" ~ ' BE OIIITEED i fJDS ~ 12" PVC COUPLING SKIMMER
O r- (~18MlGAiIONS AI[ LEFT 11" PVC APE
N VIEW wELOED ) fuir oPa w~u nrE mP a fARREI. ti PLA ~ An,~ plpE 1/2" PREFORMED JOINT ,
IA FILLER, 1?" WIDE
4r1Y1YV. ~ V11~c } ~ R "
OR FA8AIG1@ /b I S1EE1. PLAIE iv
f~• J 78" ~H 0~'
iACKWEID N01E5. MIRi Bi fMMLY " 1" PVC PEE
nj ALL AROUND 1. 1fE CriIpER ~ FASiflED lU 11E TOP OF p ~ ~ ~ ATrA~ 2000 PSF MIN. SEAL cw~P Cm°)
~ 2. er s'?ravs eol.iE» ro mP SECTION BEARING CAPACITY 2 PVC PEE ¦~et
? DF ELEVATION BENEATH COLLAR " n [y~pi C ~ wow
N ~ m ~,p y~?
6~2~ 1 1 4 x 1 1 4 ANpF OR _ 1 /4' S1EEl PIPE Ry IPE rAY OUTLET P
N DETAIL TO CONNECTIO
N PART OF SKIER DEVICE' AMY 3 ~ Z-
o ANTI-SEEP COLLAR
_ 0 SECTION A- A
AN77a -VORTEX DEVICE NTS Sheet No.
3 N15
a E TENDED DRY DETENTION POND LOT 2 WITHERS R"ENEL 3
F cde Date B Designer [Date
T No. R =W&R AS NOTED 0 EXTEND] 0 =hi PLANNERS I SURVEYORS F=MaccKeennaann 7511 tel: [phone] fax: [phone] www.withersrovenel.com
B CORNERSTONE PARK ~ Drown Y JAC 8/01/01
RALEIGH, NORTH CAROLINA
o Checked By Job No. 0
c JJJ 200147 U

~
IX L SPREADER LOT 6 EVE w
ce~os ~ I
f -f0
tEVEt S
FES ~ ~ FES ~
Quo = 9.5 Quo = 9.51 CFS 1
DIA=18' DIA = 18" RCP
b ' ~
° ~ I l o ~ ~
o ~ LEVEi. Sf DER SPEgRCATIONS LEVEL SPREA
~r ° I , ~ ~ c~ ° LENGTH =
~i ~ _ o °0 0 ' I. DEPTH = NGTH = 67 FEET \ C~--`~-=,~=_ bq;~
° o C7 WIDTH DEPTH - 0.5 FEE C' ' 416.0_ . g ~ - ~%---r WIDTH ~ ENTRANCE = 10 FEET '
I I' o I ~ GRASS Tl GRASS TYPE -TALL fESCUE T =-J ~ _ 4~ ~ q
I I UNER = i = DOUBLE NET COCONUT LINER
I I t'~l FIBER ERA ANKET ~ ~ ~ FIBER EROSION CONTROL BL ~ ~ ~
FESi303 (NORTH A { ICAN GREEN C350 -'~ii~ (NORTH AMER ) ~ _
I, \ ~ ~
I
I I LEVEL
` I
L0l'6®F"ES7 LEVEL SPREADER
I I
I -t = to
' +Y16b6
. .
J „
~/f~ ~ 1/1/
FE5 ~15C
FES X603 Quo = 9,51 CFS
Quo = 5,39 CF5 DiA = 18" RCP LL ~
DIA = 12" RCP - - ~ - ° ° rpm
II ° 407.4
LEVa SPREADER SPEaFlCAnDNs Oo 0 4 ~FlCanaus ~_____m.a._._
LEVEL SPREADER SPEaFlCAAaVS 401.4
LENGTH = 67 FEE1
LENGTH = 38 FEET DEPTH = 0.5 FEET FEE1 _ _ _ _ _
DEPTH = 0.5 FEET WIDTH ®ENTRANCE = 10 FEE1 WIDTH ENTRANCE = 10 FEET GRASS TYPE =TALL FESCUE CUE i ~0
GRASS TYPE =TALL FESCUE LINER =DOUBLE NET COCONUT CONUT ~9 ~`'1-~~.. LE1~EL SPREADER
LINER =DOUBLE NET COCONUT FIBER EROSION CONTROL BLANKET BLANKET ~
FIBER EROSION CONTROL BLANKET (NORTH AMERICAN GREEN C350)
(NORTH AMERICAN GREEN C350) ER L01` 8 ~ FES 15C LEVEL SPREAD
1_"=.10'
STAPLE PATTERN "E"
3.75 sta Les/yd^2 (4.5 P^
staples/m 2) using 6 in (15.2 cm), 11 qa, wire "U" ~t/>It
8 in 20.3 cm) 4.Oft staples. ( ® ~ ~
nd Lon er ma be (1.22m staples a g y i
used for loose soils, 9 Level Spreader(rlottoseale) a, staples or heavier may
g in hard or be necessary
A rocky soils.
.......~»M~'• re blankets to soil ,,..t., Secu M ~ »'Trsneltion b placing a sta le/stake , 8f 1.6ft FE5{19
Vegetated trough each YEL OW colored dot. . ~ ~ j. / t,,, v N a ~ FES X19
diversion~..~~ } ~ ta0grnde . 25 50m) .rw~ A° Do..~ °
a"'" v r y" _ Oo°o° Qto - 10.1 CFS Duo .b°q
DIA 5 C ~ .ob o . -
391, 4 _
y, w ~~y,. h, d ~ r* Jw` ,i• ,MI.8t8bNlied
r~ J y.w. SIOpe LEVEL SPREADER SPEgFlCATIONS ~ _ ,
Stable " M~~ Y°4 ",J~ undisturbed k 1. ~c"' T ~ LENGTH = 71 FEET
L R w N outlet tw K~ a'" ~?1?• DEPTH = 0.5 FEET
~ I R WIDTH 0 ENTRANCE = 10 FEET
" Yu w b~ v~l ~util~ v 1 6.67ft GRASS TYPE =TALL FESCUE
LINER =DOUBLE NET COCONUT FlBfR EROSION CONTROL BLANKET
lEVFI. SF~REAOER NORTH AMERICAN KEEN C350 ( )
~raTERlaI sPEaFlCAno~s Cross Section
~ \.N ,!P8
- roduced mat of 100 coconut 0350 The composite turf reinforcement mat (C TRM) shall be a machine p
Material Variable . fiber matrix incor orated into a permanent three dimensional netting structure. ~ 0 FES 19
m P stapled lace 1 ottom net with 0.50 x 0.50 inch P 8 The matrix shall be stitch bonded between a heavy duty UV stabilized b LEVEL SPREA ER LOT 8
~ min o enin s a su er heav dut UV stabilized, dramatically cuspated (crimped)
(1.27 x 1.27 cm) p g, P Y Y --I .50 inch 1.27 x 1.27 cm o enings, over lain with a heavy duty UV ~ intermediate netting with 0,50 x 0 ( ) P
II ~ to net with 0.50 x 0.50 inch (1.27 x 1.27 cm) openings. The cuspated netting shall form I I ilized :I~I stab p
Level lip ~ - I' I sel s aced rid es across the entire width of the mat. The three Wettings shall be stitched ~ ~ I'" romment c o P 9 ~I I,..,,. I) P Y .
of treader " T P YP PYl P ther on 1.50 inch 3.81 cm) centers with UV stabilized of ro ene thread to forma ermonen ~ II ~ ~ toge ( ~ ~
Burled three dimensional structure. I
8' min manufactured with a colored thread stitched along both outer edges (approximately 2-
All mats shall be ' S inches 5-12.7 cm from the edge) as an overlap guide for adjacent mats.
[ ] LEVEL SPREADER CONSTRUCTION SPECIFICATIONS.'
' e turf reinforcement mat shall be the North American Green C350, or equivalent. The IN F 4 FEETWIDE EXTENDING 81NCHES OVER The composit
1. THE MATTING SHOULD 8E A M IMUM 0 ermanent coin osite turf reinforcement mat shall have the following physical proper ies. I P AND BURIED D INCHES DEEP IN A VERTICAL TRENCH ON THE LOWER EDGE. C350 p P THE LI AND BE SECURELY
THE UPPER EDGE SHOULD BUTT AGAINST SMOOTHLY CUT 80D
HELD INPLACEWITHCLOSELYSPACEDHEAVYDUTYVNRESTAPLESATLEASTI2 Moteriai Content
INCHES LONG. RMSPREADINGOF 100% Coconut Fiber, (0.50 Ib/yd3 [0.27 kg/m3])
2. ENSURE THAT THE SPREADER UP IS LEVEL FOR UNIFO Matrix ~ RUNOFF.
~ 3. GONSIRUCTTHELEVELSPREADERONUNDISTURBEDSOiI(N01Flll). Nettin s Top-Heavy UV Stabilized Pol ropylene
rr10N SECTION FROM THE DNERSK)N CHANNEL TO 9 0 ft2 4.15 k 100 m 2 ~ 4. CONgTRUCTA20F00TTRANS 8.50 Ibs/1,00 ( g )
o BLEND SMOOTHLY TOTHEWIpTyANDpEp'MOF'THE$PREADER Mid-Super heavy UV Stabilized Polypropylene ~ ' 8. DISPERSE RUNOFF FROM THE SPREADER ACROSS A PROPERLY STABILIZED 20 I b 1, 000 ft2 10.21 k /100 m 2)
/ ( 9 ° SLOPE NOT TO EXCEED 1096,. MAKE SURE THE SLOPE 18 SUFFICIENTLY SMOOTH a Bottom-Heavy UV Stabilized Polypropylene ~Iltgll0lY~dejy
g TO KEEP FLOW FROM CONCENTRATING. I 1 000 ft2 4.15 k 100 m2 TELY3EED 8.50 bs/ , ( g/ ) ,~.o ~ CAS 0~' /
8. IMMEDIATELY AFTER LEVEL SPREADER CONSTRUCTION, APPROPRIA READER. AND MULCH THE ENTIRE DISTURBED AREA OF THE SP ? e° y~r ra
Thread UV Stabilized Polypropylene •'°4~ Oy : ~ SBAL ~ aQ
SEAL ti ~ ~
ecifications er roll Ph ical Sp (p ) Ys 1$49$ ' ~ ~ ~ O
En lisp Metric ~o ' . ° ? ~
J ~ I w Width 6. 0 ft 2.00 m ,,~F 4, ~ JAY J~ Ty
~ Length 55.50 ft 16.90 m w fj L. Nllllf 1
Weight 37.00 Ibs+ 10q 16.80 kg
= 40.00 d2 33.40 m2 N Area Y 3 bz''
N 0
G 0
CL Sheet No,
C7 p, Date B Designer WITHERS R"ENEL I ENGINEERS I PLANNERS I SURVEYORS
~ N - WdcR Scale AS NOTED Q CORNERSTONE PARK
K Drawn By Dote T JAC 11/28/01
c) -N I LEVEL 0 Checked oy Job No, &UEI GH, NORTH CAROLINA 111 MocKenon Drive Cary, North Carolina 27511 tel: [phone] fox: 919-467-6008 www.withererovenel.com
JJJ 200147
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428 - THE CONtRACrOR SHALL SEED AND ~ _
_ - _ _ - MULCH ALL ~4ffE AREA5 EXCEPT IN At~AS ~ _ / _
4 WHERE PLANT 11fArERW. PLACED) AFfEri' - ~ - - _ MICRO POOL
ca~rorl Is CGS snr FENCE 149.31 Sf
AT 3' _ _ VORTEX SEE DET SHOULD REIWVN IN PLACE UN11L GRASS _ 424
OPERA M~EEI GRASS HAS BECOME EST
422 ~ RLSfR ' _ ~i i
420 GRADE' ANA-SEEP 1 " "
418 _ _
_ _ r: LOW MARSH HIGH MARSH W..,~.._.....
2,33217 SF
8 LF 24 1~ - 414
FILTER F UNDERlINER
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410 ~

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1D+00 10+20 10+40 10+80 10+80 11+00 11+2D I ~ ~ 1 ~ i /
NOTE: %r
- 1. 12"~d RCP SHALL ~ TONGUE AND Gft'OOVE W CONFINED '0' RING GASKET ~ /
RISER BARREL PROFILE VIEW ~ NG -443 TEST AND JOINT OF ASTM-C-361 LATEST.
1-10 HORIZ C ~
' 2 KEEP 4" GATE VALVE CLOSED UNLESS 1HE NEED TO COMPLETELY DRAIN srmmary Information 1-5 VERT cornerstone Park
THE POND IS NECESSARY FOR MAINTENANCE PURPOSES. Extended Wetland Detention Pond 1-Lot 7 PLANT LIST Nom.
Storm Glpeak Qpeak Max.. Men. Frequency In Out WSEL ~ Pond 5torege QUA SPECIES Common Name S acin 5torege
cis ds ft. ac.ft. ac.ft.
A e e A 2 5.82 0.05 421.48' 0.101 ~,~0~ 35 Canna flaccida Golden Canna 3' o.c.
10 7.50 4,42 421.81 .0.106 ~4 REBAR 12" 100 9.13 9.08 422.00 0.119 1'106 H m nocallis caroliniana S ider Lil 18" o.c. 1.119 87 y e p y
D,C. EACH WAY 0 168 Iris vi inica Blue Flag Iris 18" o.c.
d PRESSURE RELiEr e o 0 r9
HOLES i/2" Dot ~ ~ o o a Ek3vations v , ~ 69 Juncus biflorus Shore Rush 2' o.c. SCREENACCESSIBLE rNROUGH
o PLAN VIEW o e roP is To cAOE coRRUa~rED ; , , ~ Basin Bolton Elevation 418.50 ft DooR 4 M rica cerifera Wax Myrtle 5' o.c. Y
c METAL oR f/e" sTEEI Pure • 'M Perrrrenent Pool Elevation 420,00 R o PRESSURE REGEF HOLES MAY "r crest Elevation 421.58 ft. N01~~ 95 N m haea odorata Fragrant Water Lily 3' o.c. SKIMMER MAYVARY Y p
N BE OMITTED, IF ENDS Or D cORRUCAnDNS ARE tErt ~4RREL ~ Tap of Dam Elevetiai 422.00 ft. SLIGHTLYFROM 15 Panicum vi atum Switch Grass 3' o.c.
roar OPEN WHEN THE ra Ls PIPE A1TAf~lED• 1/2" PREFORMED JOINT aLUSrw4rION ~
DIAMETE AILER, 12" WIDE Areas 141 Peltandra vi inica Arrow Arum 18" o.c.
r2 Permanent Pool Surface Area 4702 sq.ft. CYlAiDER ~ coRRUr~rEO era PIPE o ~ ~ Drainage Area x.52 ac, 292 Pontederia cordata Pickerel Weed 18" o.c. FLOAT
so' oR rAeRrcATED rROM r/e' i Impervious Area .55 ac. STEEL PUTS ~ ~ 336 Sa ittaria latifolia Broadleaf Arrowhead 18" o.c. 9
r TACkWEID y' , ourLEf END; ~NECTION 141 Saururus Cemuus Lizard's Tail 2' O.c.
~ ALL MOUND I ~ ~ ~ " Other Pararrreters TO Tq gUl'LET PIPE OR RISER BARREL PIPE LgNGER THAN SHOWN " aaaaa~,"r'e&°+r~
p r. THE cnR~ER MUST 8E rrmMlr Des n Rainfall 1 in. runoff J FASIfNE'D TO THE TOP OF 141 Scimus un ens Three-Square Bulrush 18 o.c. ,,a'a ~M CAC ,,,,a 101f N071NCLUDED WPPH SKIMMER ' M p g ® ,r SUPPLIED BY USER ~ ~ °"~,~'y~ OsI
' ~ RISfR, DrawdOWn Device Skimmer Z 2, suPPDRr a+RS ARE ATTACHED 2000 PSF MIN. 42 Thalia dealbata Powdery Thalia 2 o.c. ~~s~~r~ N
N 3s" er STRAPS BOLTED ro TOP BEARING CAPACITY Mkt. Drawdown Tima Req'd. 48 hrs. a RsER. ELEVATION SECTION Min. Detenik~n Volume Req'd. 0.208 ac.ft. ved Cattail 2 a.c. = sQ 47 T pha angustifo6a Narrow Lea FLEXIBLE JOINT Y p S ~ ~ I.
m s x 12" BENEATH COLLAR o: B REa4R Detention Vdume Provided 0.107 ac.ft. PACER B4R i n . + 139 Zizania a uatica old Rice 18 o.c. ~ s Igq~g a ; q
_ (flP) I i SKIMMER DETAIL "s t~' ~~~o» ~ ~
rn Lot 7 Extended Wetlands • Pand 1 rn Skimmer to Use: 2" Skimmer vr12" heed N.r,S °'r °'ry~~ ° FT
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ANTI VORTEX DEl/ICF n~n~ a~A . :a ~a "a. rn. I L~ ~
O _ Inches
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T Date B Designer Scale No. Revision 0 Sheet No,
b W&R AS NOTED WITHERS R"ENEL D DETENTION WETLAND POND 1 LOT 7 1 ENGINEERS I PLANNERS I SURVEYORS
r ~ Drawn BY Date CORNERSTONE PARK EXTENDED DE
JAC 11/28/01 S Checked By Job No.
RALEIGH, NORTH CAROLINA o cKenon Drive Cary, North Carolina 27511 tel: [phone] fox: 919-467-6008 www.withersrovenel.com 111 Ma
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- 1O ElEY 14.5 _ - 100 3.49 3.49 417.88 0.080
412._______--___..._
410 , , ; Elevations
. , Mein t3o8arr Elevation 414.50 ft. _ Permerre~ Pool Elevation 418.00 ft.
4 NRS lE YALVE _ _ 417.55 ft. _ Croat Elevation
419.00 ft. Top of Dam Elevaiion tOW ~NRSN 422.61 SF
406 - _ ~CRO POOL
• Areas FORF 8~Y 95.29 SF
- Pemranent Pool Surface Area 1002 eq.ft. ~ 5.6QX SLOPE 51 x x "b - 404 Drei Area 1.oe ac. ~ X5.74 S~
P~ n~ 0.54 ec. - Impervious Area 0
402 - -
- other Pare
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o>, 'f ~ ~ N C M ~ . Drawdown Time Req'd. 48 hrs. ~ t\ C M ~ ~ N N N Min 0.045 ac.ft. ~ r- .,.,"f . f .h `f Min. Detentbn Volume Req d. 0 0 0
g ~ peter4ion Volume Provided 0.048 ac.ft. g ~ 0
0
+oo 10+80 11 0 0
40 160 Lot 7 Extended tlVetlende • Pond 2 10+20 1~' 10+00 2' 8ldmmsr wl 2~ treed 0
Skimmer to Use: NOTE. . , _ ft. - LAN VI CANTING AREAS P _ =5
• CONFlNED 0 RING GASKET volume to be Drained - 1,957 8E T AND GROOVE W _ 1. 12 i Rt;P SWILL rr~. 2 days ROFILE VIEW Draw Down 0
REL P - - t cArEST, I ER BAR C 36 _ R $ Nt OF ASTM . in. ASlll 0-443 UlEST AND JOI Orifice Area - 0.87 sq MEET~VG
1=10 HORIZ NEED TO COMPLETELY DRAIN 1.05 mchee lE YALVE CLOSED UNLESS 1HE orittoe fNemebr 2. KEEP 4 GA
1=5 VERT PURPOSES. I~CESSNn FOR MAIM'ENANCE THE P01~ 1S
PLANT LIST
mmon Name S ~~acin SPECIES Co QUA
A A + VENT vENr N ACCESSIBLE THROUGH Golden Canna 3' o.c.
/4 REBAR 12~ SCREE 8 Canna flaCCida
O.C. EACH WiIY DooR S ider Lil 18" o.c. 63 H menocallis carohrnana p Y
0 ~ ° o y " Blue FI Iris 18 o.c.
NOT a PRESSURE RalEa 'M HOLES i/2" DIA~ o o i, ~ SKIMMl7t MAY VARY 40 Iris vi inrlca a9 ~ ,
o PLAN VIEW ~ ° T°~° a 10 Puy SLIGMfiLYFROM Shore Rush 2 o.c. 38 Juncos bifiorus
MEfAI dr /e PRESSURE REIEF Ro~S MAr ILLUSTRATION Wax M e 5' o.c. cenfera Y?~ 8 Myna
° ~ ~ EMDS~ M~tEL a ~ (~'1 uPa Inm+ n~ ra' Ls PEE 'PREFORMED JOINT F rant Water Lil 3' o.c. 17 N m haea odoreta rag Y yP ,
1/2 M Switch Grass 3 o.c.
Fq.LER, 12 WIDE 36 Panicum vlirgatum F~oar Pickerel Weed 18" o.c.
cnMaar a 12 ~ ~ ~ ~ . coRRUCeTE° MErK PIPE ~ r 68 Pontedena corclata
OR FAetlCAIED fROM 1/8" 'r Broadleaf Arrowhead 18" o.c. 49 Sa Ittana latlfoha
42" S1EEl PUTS r• ~ . OUTLET END; CONIriECT10N Lizard's rail 2 o.c. 28 Saururus Cemuus o~,
r~~ I ' TIC OUTLET PIPE OR RISER BARREL PIPE LONGER THAN SHOWN Three-Square Bulrush • ti~5~ .,k ~ r~~
F- I, TIE CriNVDER MUST 8E fN~Y a r i0 TFE ~ a< 2000 PSF MIN. 35 Scirpus pungens : ON NOT INCLUDED WITH SKIMMER d Rice 18 O.C. ~ ; q`~
Z z. supP°Rr ears NPE ~Tr ~ n SECTION G4PACm Zizania a uatica ~I p PPLIED BY USER 41 q SEAL t sv
N 24• er srR~PS eartro io ELEVATION BENEATH COLLAR 18498
Q or RISEIP. m ~ ~~Rt2~ FLFJlIBI I~~ •YiF' I Y~ ~p• '4,4 GIN~•~
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~ _ SKIMME ETAIL SKIMMER D I n1 q
Z MM-SEEP COLUIR N. -S WITHERS RAVENEL Sheet No.
p SECTION A A
TEX DEVICE ANTI VOR M'S a
0
Designer Scale T o No. =Rn Date B w&R AS NOWT
0 CORNERSTONE PARK ED DETENTION WETLAND POND 2 LOT 7 ENGINEERS I PLANNERS I SURVEYORS Cary, North Carolina 27511 tel: [phone] fax: [phone] www,withersrovenel.com 111 MacKenan Drive
r o CBP 200147 6 Checked By Job No. RAMIGH, NORTH CAROLINA
0 Drawn By Date EXTENDED DI
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45 PELTANDRA VI
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- • ~ ~ , 200 SCIRPUS PUNGE
~ , • , ~cusS_~ Rm-RAP , w , y , n 192 PONTEDERIA CORDATA
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4 0 Summe Information
-_T____ ry - - Comeratone Park
408 _ ~--T - Extended Welland Detention Pand 3 -Lot 7
- Storm Qpeak Qpeak Max. Max.
SI~POR15 A 3' ~ F u~c In Out WSEL Pond Stange 406 - - ~ y
FR~1 ~ _ cfir cfa ft. ac.ft.
- 2 5.B0 2.60 402.74 0.184 ALANG NSEL i 404 _ _ 10 7.22 6.29 402.90 0.183 ~ INGlI IURSH
IC?P OF EL~O .190 - - - 100 6.79 8.79 402.98 0
402

Elevatkxu ,-w,
~ 399.50 ft. Basin B+aftori Elevation - _ Permanent Pool Elevation 401.00 ft. LOW ~41RSH
_ 398 _ , Crest Elevetison 402.55 fL ~•t, SF 12,9.03 Sf 7&
_ ~ - _ , _ - T of Dam Elevaibn 403.00 ft.
4 N9 °p CUSS I ,RIPRAP SEE DETA1. _ 396 --pI~PA10R -
Areas
1 Permanent Pool Surface Area 3308 sq.ft.
394 - Drainage Area 2.24 ac. _ 1 TNVG Impervious Area ac. H1GFI IIIARSH
1ss5.n SF
39 rarmetera
DATUM ELEV Design RainfaN 1 in. runoff
Drewdawn Device skimmer 390.00 AR -PLAN VIEW
~ ~ ~ ~ Mh. DrewdrnMn Time Req'd. 48 hrs. co ~ N cp 1=10
~ ~ ~j Mfn. Detention Volume Req"d. 0.144 aC.ft. ~ vii ~ Detention Volume Provided 0.145 ac.ft.
M
Lot 7 Extended Wetland's -Pond 3
10+40 NOTE: 10+60 10+80 11+00 r skmmer wfr head ~ 0+00 10+20 , , Skimmer to use:
1. 12"! RCP SHALL BE TONGUE AND GROOVE W CONFINED 0 RING GASKET vdume ~ be Dreined = 3,652 ft RISER BARREL - PROFlLI< VIEW _ PLANT LIST
MEETING ASTM C-443 UTEST AND JONVT OF ASTM-C-361 LATEST. Draw Down rnre - 2 days 1=10' HORIZ V UNLESS THE NEED TD COMPLETELY ORNN orificeArea = 2.TS sq.
2 KEEP 4 GATE ALVE CLOSED 1=5 VERT OrMice Diameter • 1.88 Inches QUA SPECIES Common Name S in
THE POND IS NECESSARY F10R MAINTENANCE PURPOSES
31 Canna flaa;ida Golden Canna 3' o.c.
70 Hymenocallis caroliniana Spider Lily 18" o.c.
A 4 ~ A 63 Iris virginica Blue Flag Iris 18" o.c.
102 Juncus biflorus Shore Rush 2' o.c.
p- /4 REBAR 12" 8 Myrica csrifera Wax Myrtle 5' o.c.
O.C. EACH WAY 0
d PRESSURE REUEF o 0 0 ,::,4. HOLES 1/2" DtA. o o x VENT 33 N m haea odorata Fra rant Water t.ily 3' o.c. YP 9
N i; i ANT 24 Panicum vi atum Switch Grass 3' o.c. SCREEN ACCESSIBLE THROUGH
PLAN VIEW o o TOP is to CACE CD~iUG41ED ~ ; ; N o METAL OR 1/d SrEfl. PULE. ~t °0°R 56 Peltandra virginicaa Arrow Arum 18" o.c.
O PRE55URE RELIEF M71fS IMY a eE armor, ~ ENOS of NOTE: 192 Pontederia cordata Pickerel Weed 18" o.c.
a7PoPUG1T10NS ARE la7 BABRp, SKIMMER MAY VARY ~ ~Etao ruts a~EN wrIEM TFE roP a
AnAa,ED, PIPE 1/2 PREFORMED JOINT SLIGHTLYFROM DIAM 75 Sagittaria latifolia BroadleafArrowhead 18" o.c.
FILLER, 12 WIDE ILLUSTRATION 133 Saururus Cemuus Lizard's Tail 2' o.c.
CaalUGAlEO IRTAL PPE . ~ ' . AR fAtlRICATED rRON I/d' • O . 200 Scirpus pungens Three-Square Bulrush 18" o.c.
STEEL PULE "i FLOAT 37 Thalia dealbata Powdery Thalia 2' o.c.
M TACXViflO > ri ALL AROUND t , v it 2' . . 18 Typha angust~folia Narrow Lea ed Catta o c
1, ihE CYUrptlt MUST ~ iiRM<Y 0
J FASTENED lO ihE TOP OF ~ tilsfR OU11ET END; CONNECTION it RI 18" o.C. x`911 1191 AIlIP 131 Zizania aquatica W d ce ,,ar° 'H ~AR~~'`///'''fffjjj m0~ le~ b°SNMiYy
? 2. supPDRr aura ARE AnACwm 2000 PSF MIN. TO OUTLET PIPE OR RISER BARREL PIPE LONGER THAN SHOWN °`.6~q ~~s5~a
Q 36" ~ 5mAPS ~ ~ ELEVATION SECTION BEARING C4PACI11' m ~ ~ BENEATH COLLAR NOT INCLUDED WITH SKIMMER NQ~' ; SUPPLIED BY USER THE CONTRACiC1R SIWl AND ~NACH ALL ~ 1 $ ~ LL ° d
~ 8~2~ RE&~R Y ~ tl ALAS EXCEPT pV AREAS WFIERRE PLANT ~41TERW. IS ~ 18498 •
I rn') U) ! PLAAED AFTER Ct~STRUCIION IS COrI1PLETE SST FENCE
cn FI.EXlBL v FLEXIeLEIJOINT I REMAIN NV PLACE UNTO GRAS5 NHS ~'COII~' ~ `•.~CI NEB sip yfi °j°..a ,w
o SECTION A-A ESTA~JSFIEn. N I,,, J ~
,,,,,,,,y-,. „~M„~ AWTI-SEEP COLLAR SKMMME SKIMMER DETAIL Y .
AN ?-VUM th utMot N. N.T.S zJ
3 NM
o Im F
~r Na, Date Designer Scale o Revision Sheet No.
W&R AS NOTED WITHERS R"ENEL DED DETENTION WETLAND POND 3 LOT 7 1 ENGINEERS I PLANNERS I SURVEYORS 7
Drown By Date CORNERSTONE PARK
EXTENDED 1 d CBP 1/24/02 0
o Checked By Job No. 0 RALEIGH, NORTH CAROLINA 111 MacKenon Drive Cary, North Carolina 27511 tel: [phone] fax: [phone] www.withersrovenel.com
KU 200147 U

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l ~ 1 l 1 1 I I i 1 ~ ' ` ' ! 1 1 11 - ~ I 11 1 l { t 1 j ijll I 1 - 1\ 1 1 1 1 1 1 1 I 11 1 l 11 1 It Y ~ - -
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1 1 { , i 1 1 1 11 , 1 VI { 1 I 1 1 1{ 1 1 4 1 1 1 1 ~ i { 1 { 1 1 1 1 I 1 ~ V 1 1 1 i y t ~ l 1
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1 { , 1 t , 1 432 - ._._._.__T__--- Extended Wetland Detention Pond 4 -Let 7 1 1 , '1 + , 1 1 } i 1 " ~ ` , tl 11 1 ; t 11 1 y 11 ~ {
Storm Qpeak Max. 11 li ' 1 It ~ - F In 1 , , ~ , , 1 1 1 1 1, 1
' ~ WSEL Pond Slorxpe ; + , , ' 1 ' ~ ; l ; 1 11 i 1 1 1 1 1 11 { ~ 1 1 M I"WL
~ ~ ~ aaR 1 ~ 1 11 - _ 2 4.40 2.74 426.87 ' ' 1 i ' 1 ~ 1 1 1 1 l ~ p, 1 1 1 1 1 1
- _ DF =4 0 10 5.79 0.125 ~ i , 1 11 428 a.64 a27.oa a.14o 1 1 1 1 1 1 1 1 1 ~y~p~ ply 1 1 j 11 j y ~iH1L (111
4 100 7.01 5.20 , 1, 1 , ~ I 427.48 0.160 1 1 1 { , 1 1 1 1 1 I I 314.16 Sf LOW ~i(UPSH
A _ i ` , 426 1 1 1 1 1 ; 1 , + 1 1 , I 1 644.05 SF 1111 11 ,
1 1 1 1 1 1 1 I I l Y ,
1 1 1 ! 9esin tin Elevation 1 , 1 1 424 _ - _ _ _ _ » 429.50 ft. 1 v 11 ~ ' 11 ` 11 ' ' 1`I` 'll'' '11'1
ElElE1TIDV11 200 _ Permanent Pool Elevation + ' , 1 ~ _ I { + 1 - 425.00 ft I 1 1 1 1 1 1 1 1 1 1 t 1 1 1 1 1 1 1 1 1 1 ,,Ip~
~ 428.80 ft 1 1, 1 t 422 - - 1 11 t 1 1 iI it 1 1 1 ~ 1~IY1JH
- Top of Dam Elevatlon 428.00 ft. 'I 1 li 4 - 4 ~ ~ 1 - I ~ ~ ' 1 ' 1 I . 1228.35 SF 1 1 1 1 1{ 1 1 1 1
I ' I 1 420 1 I Areas t ' 1 1 ~ ~ 1 1 1 1 1 1 1` ' 1 1 1 1 1 11 1 1 1 1 i l l II
~ . Permenerrt Pool Surface ' ' , ' 4 NRS GA>E VE ~ 2285 sq.tt i 1 { , ~ DreMage Arrea 2,06 ac. , 1 1 1 1 4 1 1 l 1
_ _ Impervious Area 1.27 ec. ' ' 1 _ - - / I 4 1 1
" - 0.1 SLt~PE' - i~ 1 1 I 1 1 1 1 1 1 1 ~ I I
USE f IL FABRIC ER - - otner Paremeterg ~ , 1 1 _ Design Reinfap I 1 r~~-- 1 1 1 1 ~ _ _
416 5x5 xi I1 - 1 in. nxroA 1 i ' 1 II 1 1 1 I 11 1 1 - 1 l { I 1 I i 1 1 / ~
12 1 , 1 1 Drewdown Devoe Skimmer 1 , 11 1 1 1 1 1 1 1 I I I ~r / ( 1 I i ( I 1 II I / ~ /
Mh. Drawrlown Ttme Req'd. 48 hrs. , ~ I ~ `t' QO r. w Min. Detention Volume Req'd. 0.104 I I 1 1 1 1 { I 1 I 1 .r / I I 1 1 1 1 1 I I _
~ C ~ ~ ~ ~ D~entlon aaft , i ~ , Vohme Provided 0.106 ec.ft f { I l w._.-_.-__-- i I 1 I I I 1 V I ,,l 1 I i ; 1 ; I II 1 i - - _ _ _ - - -
h N N N N N ~ r''~ 1 'Ih 't . f ~F ~ i 1 , , ~
f ~ II i I 1 1 1 1 iI I I I ! ~ /
Lot 7 Extended Wetlands • Pond 4 ~ 1 , , I 1 _ P A II R
1 O?00 1 ~+20 Sldmmar to Use: 2" Sklmrner w! 2"head ' i i ' ,i 1 ~+40 10+60 Volume to be Drelned = ~0+8~ 11+00 4,817 cu, ft. 1 ( I i y ! 1 1
NOTE: Draw Down Time = 2 days o~nr~ area = 2.01 sq. in, INOIE:
RISER BARREL - 1. 12 r RCP shW16lE orifice o - PROFILE VIEW TONGlJE AND GROOVE W CONFINED 1.60lnctrea / 0 RING CASK 1HE ET CI~IIRACTDR SHALL SEE ;TC)R SILL SEA AND MULr~1 Atl BARE
» ~Ei~NG AST~I C-443 LATEST AND JO~VT OF - i =10 HORIZ ASTM-C 361 IATESI: AREAS EXCEPT IN AREAS N~
" ~ 2. ~ 4" GATE VALVE CIOSED UN PUCED AF)ER 1=5 VERT LAS THE NEED TO COMPLETELY DR41N a~slRUCrn C~^~~'~Rw11V11 h7 ull~?/'LiIG JILI
TFIE POND IS 1~'CES~IRY FOR ~IAI s~ u ~ PLACE u N1ENgNCE PURPOSES. ESTABLISHED. ?Y!~
A A
vENr ~4 RE84R 12" ~r PLANT LIST
at~ssu~E ~F ° O.C. EACH WAY tags t/2' ota ° ° ° SCREEN ACCESSIBLE THROUGH
~ ~ NOTE: DooR QUA SPECIES Common Name S acm
a PLAN VIEW ° o TOP a ro cMa' coNRt~ N ° ~ t , spa Tm G , SKIMMER MAY VARY
t>r ~ ttoiES wr SLIGH ~ ~ ~ ,r 7LY FROM 23 Canna flaccida , Golden Canna 3 o.c.
oMmm, ENDS of 69 Hymenocallis caroliniana N Sp?der Ld Y 18 o.c.
a , OORRUG4TpNS AAE u:rr ILLUSTRATION ~ . tact orov ~rr:N THE rota BARREL ~rr~cttEn, PIPE 61 Iris virginica „ Blue Flag Iris
TAM 1/2" PREFORMED JOINT' 18 o.c. 57 Juncos biflorus
cn a is ~ FILLER, 12" WIDE Shore Rush 2 o.c. 7 Myrica cenfera ,
~ ~ MEru t'MPE Wax Myrtle 5 o.c.
sTEa. ?UTE • N ~c ~ FLOAT 30 Nymphaea odorata F ragranf Water Lily 3 o.c.
NOTES: 23 Panicum vi atom r9 Switch Grass 3 o.c.
1, rh'E CYLNrnER MUST ~ FtRIM.Y F,~ ~ OUTLET END; CONNECTION 108 Pontederia co?data P' ~ckerel Weed 1
o ~ TO OUTLET PIPE OR RI SER ~ 1+" x ~rrr~trEO 2000 PSF MIN. 8 o.c. 144 Sagittaria latifolia
E~ z s ~ ! ~ TED ro TOP ELEVATION BEARr BroadleafArrowhead BARRED PIP 18 O.C. E LONGER THAN SHOWN 104 Sau
- ~ SECTION NG CAPACITY N ~ torus Cemuus Lard s T ii ~ a,,,l,~o~a~ NOT INCLUDED WITH SKIMMER a 2 O.C.
Q ~ ~ e BENEATH COLLAR m I} i S 155 Scirpus un ens CARp~ SUPPLIED BY USER P 9 Thnee-Square Bulrush o~ .e•~~~~... A 18 o.c. .a . 2
o: Thalia dealbata po ~ , q~ , wdery Thalia 2 , 4
~ SECTION A-A ~ FL~XIB O.C. w dq 48 Zizania a uatica ~ SfW A .
LE J~ FLEXIBLE JOIN Q Id Rlce 1 n ~ T 8 o.c. ~ t . 1~4y~ .
° ANTI-VORTEX DEVICE ANTI-SEEP COLLAR . rF ~
~ SKIMMER L ~ N ! E.~.g SKIMMER DETAIL ~
o Nis ~ N. T.S 0 N. T.S rr,,, lE .
n Nn o...s-~-- ^-L-
Designer F Scale
It WAR AS NOTED T a Drawn By Date
a JAC 11 2B 01 CORNERSTONE PARK V, Checked By Job No.
0 EXTENDED DETI F"IGH, NORTH CAROLINA o KW 200147 DETENTION WETLAND POND 4 LOT 7 WITHERS R"E - NEL Sheet No,
a 0
U ENGINEERS I PLANNERS I SURVEYORS 111 MacKenon Drive Cary, North Carolina 27511 tel: [phone] fax: [phone] www
,wi#hararavenel.com

/
~ I A A 18 PANICUM tiEMITOMON 53PONTEDERACORD T
I I 0 CANNA FLACCIDA 34 SAGITTARIA LAIIFOLIA
L 39 ZIZANIA AQUATICA 69 Tf1ALIA DEALBATA
/ 63 IRIS VIRGINICA ,
i / I . / ~ / / ~ / / 46 JUNCOS BIFlORUS
I 58 58 SCIRPUS PUNGENS + +
f / w
1 ..~--r i . + PT41 EA Ara
~ W W W W '1' + + + + r + / , 4' 26 I I IAA D W + ? T + + + W W W W W W + + + + + + + / Y;y ~ ~i~'~-'
I .J W W W W W W W + + + + + , / ~ 'x' ~1
~ rr.. + + + + W W W
/ / / W + + + k ~ ~ 1
- , ~ W ~y
~ ~ • .
~ ~ 1 ~ ; ° ~ W W / ~ Q / i W W 4 ,
J / / )C`~.'~ x / / UA W h''l.
_ , f Q °o Q ° Q ° I6 M'MPHAEA ODORATA / /
~i~ ~ i ~ ` ~ ~ • ~ ° I I AF IDA 0 o GANN IAGG ~ / / s.;x
J ° Q ° ° ° 95 SAURURUS CERNUUS / / , / v'
- J,.~ ~ - , Q ° 42 PONTEDERIA CORDATA ~ /
~ ° 9 NYMPHAEA ODORATA / / / ~
r,/ r - ~ 39 IRIS VIRGINICA / / / / . y'
i _ +4045 ~ / , / / / 3 I TYPi1A ANGUSTIFOLIA / / / /
_ yam,. O ~ ~ + 25 SAGITTARIA LATIFOLIA 40 IIYMENOCALLIS CAROLINIANA -r , / / ~ .~1'.
41 IIYMENOCAlllS CAROLINIANA TIF IA ~ ' 74 SAGITTARIA lA OL
_ ~ 5 65 SCIRPUS PUNGENS 21 PELTANDRA VIRGINICA
.5 ~ ~ 1 , ~ 4 MYRICA CERIFERA
° ~ ~ ~ ° PLANTNG -PLAN SEW 23 PANICUM VIRGATUM
/ oo° ° °(J o
1"=10~
r' \ f' r
~ /
~ ~ o ~ ~ - - 481 ~ _ - ~ w
t ;i " a
\ Dam/ ~ ~ / r- ~ ~ FDRE &IY
i' , ~ ~ r` i.~- I?NCRO POOL ~ ~ 214.47 SF
i • . , I' ~
O / r / i ~
~ ~ . . ~ r r,. I 4 ° _
o o Q° ~ ~ 44 LF 12 RAP, / , ~ ~ /
~ v ° - ° ° n r~ ~
O / ~ ~ ~ /
I~RAP J a~ e' \ / / ~ / ~
~ IiW 397.00 PAD ~ OISSIPAR~RR
~ / ° ~
X ~ / IRSE Fll ~A@RIC / r / / Q o o ° LOW IWIRSH \ Q
~ ON D ~ -PLAN VI / DED DEIEIVII ~ / 0 0 639,82 SF °Q ° \
_ ~ =20 o\
o
\ ~ i / t ~
~
Summary kdormaticn - J' Com~stonePark ~ 1,072.93 r'
~ Extended Weiland DetenBon Pond - Lat 7 ~ PLANTING AREAS -PLAN VIEW
410 - - - Storm Qpeak Qpeak Max Maa. / ~ =~o'
s _ Frequency In Out WSEL Pond 8traga / ~ crs cfe ft. aaR /
2 5.28 2.87 407.98 0.163
1 SIQI 1 ~ 10 8.14 5.17 408.08 0.181
406 - = P001. 100 12.18 9.57 408.19 0.174 PLANT LIST NorE~• ANT LIST »
- QUA SPECI LOW MARSFI AREAS SHALL ~ 9 -18 IN DEPIH IA SPECIES Common Name Root S cin ?~cH ?uARSH AREAS SHALL ~ o =9» IN DEPTH
~ E 404 E 4 ~ Basin Botton Eletration 404.5 fl.
-
402 _ PemrenenlPodElevaliorl d06.OR. 0 anna DETAIL _ 4 - _ (fit Elewlfon 407.8 ft. Tap of Dem Ebtalion 409 fl, ymenc ~ Canna flaccida Golden Canna 3 Gal. Cont. 3' o.c.
1 N menocallis caroliniana S ider Lil Quart cont. 18" o.c. Y P Y
400 102 Ins virgi Q Iris vi inica Blue Fla Iris Quart cont. 18" o.c. r9 9
Areas - ~ ~ ' Pemlanent Pool sum Area 46 Juncus 3 Juncus biflorus Shore Rush 3 Gal. Cont. 2' o.c.
398 ~p(,E T (EAST Drainage Area 2.25 ac. 3 _ 4 Myna ~ M 'ca cerifera Wax Myrtle 3 Gal. Cont. 5' o.c.
Impsrnous Area ~ 1.51 ac. Yn
. - - 16 N mphF 396 y r 3 N m haea odorata Fra rant Water Lil Bare Root Liner 3' o.c. YP 9 Y
°tl1ef 18 Panicu~ DIS51P TOR PAD 18 ICK _ Design Ralnafl 1 in runol? g Panicum hemitorrwn Maidencane Quart Cont. 2' o.c.
394 aewdown oeetoe skimmer 23 Panicun T1~E 3 Panicum vi atum Switch Grass 3 Gal. Cont. 3' o.c.
Mh. Drawdown Tinto Raq'd. 48 hrs. I~in. tklen8on vakrme Req+d. 0.12 ac.ft. 21 Peltand 1 Peltandra vi inica ArrowArum Quart Cont. 18" o.c. ~'9
p op ~ w Detentlon Vdume Prohded 0.139 ac.tt 95 Pont9dE
w ro 5 Pontederia cordate Pickerel Weed Peat Pot 18" o.c.
~ ~ gg g 133 Sa attar ~ 9 13 Sa ittaria latifolia BroadleafArrowhead Peat Pot 18" o.c. 9
Lat T Extended Wetiande 95 Saururu 5 Saururus Cemuus Lizani's Tail Quart Cont. 2' o.c.
Skimmer to Use: 2' Skimmer w! 2" heard f t+oo _ 123 Scirpus !3 Sci us u ns Th uare Bulrush Quart Cont. 18" o.c. rP P ~ ~9
1 +00 10+10 10+40 10+8D 10+~ Volume to be Drained - 5,227 cu. ft. 0 . 5 Thalia dealbata Harcl Canna Quart Cont. 2' o.c. Y
NOTE. 95 Thalia d , , ~ Drew Down Time = 2 days
1. 12 i RCP SHALL ~ TONGUE MD GROOVE W CONFlNEO O RING GASKET _ 31 T ha ~ _ Orifice Arm - 2.33 sq, an. yp R BARREL PROFlLE VIEW RISE 1 T ha an ustifolia Narrow Leaved Cattail Quart Cont. 2' o.c. YP 9
~E1N~G ASTM C-4~3 LATEST Mq JOMIT Of ASTM-C 361 LATEST. _ Orifloe Diameter - 1.T2 inches 39 Zizarna 1=14 MaR1Z q yip 4 GVI1E WILVE CLOSED UI~ THE NEED TO COMPLETELY ORAIN 9 Zizania a uatica Wild Rice Peat Pot 18" o.c. Q
r ~ 1. 11f.Gr
I =5 ~ ~VTENANCE PURPOSES. 1F~ POiI~ IS I~C~rIRY FOR
vENr NOTE.
SCREEN ACCESSIBLE THROUGH 1HE CONIRAC>OR SHALL SEED AND MULCH ALL BARE
A A ~4 AEBAR 11" DOOR AREAS E71'CEPT 6V AREAS WHErrE PLANT ~4TERIAL 1S PLACED Af TER rANS1RUCAON S Gb11PLElE SILT f ENCE
' ' ° O.C. EACH WAY 0 0 N TE: REV IN PLACE UNDL HAS BECOME
~ ° ° SKIMMER MAY VARY MAY VARY
~ ° o roP a 1o aoc coR~oArEO • % , SLIGHTLY FROM 'FROM
~ PRESSURE RELIEF * 0 1~TAL Oe 1/d" SrEEII PULE. f, HaES 1/2" ova PRESS(N~ ~ Nd~s wtr ~ ,g ILLUSTRATION TION
cv eE ow?~a r Eras of PLAN VIEW ~ ~ ~ a .
N FULLY OPEN N1~N iNE LOP
~ Arty. ~ 1 2" PREFORMED JOINT
FlLLER, 12 WIDE , cnw~R a 11 DICE FLOAT
ooPonl~um t1ErA1. PIPE " ' • oR FAS1ncArEO FROM 1/a
s?EEL PurE. t 18' .r
~ ~uNO No>ES; OUTLET END, CONNECTION 'CTION
~ 1. n1E cn,?aex NUSi' eE F1Rt11Lr " 70 OUTLET PIPE OR RISER ~ FASTENED ro ns' TOP OF RISER ~H BARREL PIPE LONGER rHAN SHOWN p~
J ~ ItlSEIt NOT INCLUDED WITH SKIMMER
Z 2• 2000 PSF MIN. cn ~ ~ ea~D m roP BEARING CAPACITY ; SUPPLIED BY USER SEA l
Q ELEt~ATiON SECTION m BENEATH COLLAR
(Y /6 x~~ 1 1 4 x 1 1 4 ANCLE OR F- SPACE 1!9423
1 1/4' S)EEI. PIPE'. I j i G7 ~ ~ ~'iN'E~' FLEXIBLE JOINr ~,P
d N FACTORED BY FAIRCLOrH RY MA U JAY J~
o sECrioN A-A - _ _ _ _ _ ANTI-SEEP COlL4R SKIMMER DETAIL •
ANTI-VORTEX DEVICE
a MT S
o NTS F
Sheet No.
Q Designer Scale C) No Date CD Bevision- WITHERS R"ENEL a1.-
5 W&R AS NOTED Drawn By Date CORNERSTONE PARK
d JAC 11/28/01 EXTENDED DI ED DETENTION WETLAND POND 5 LOT 7 ENGINEERS I PLANNERS I SURVEYORS 9
o Checked By Job No. o 111 MacKenon Drive Cary, North Carolina 27511 tel, 919-469-3340 fax: [phone] www.withererovenel.com
• JJJ 200147 U

0-
N
0
pN
O
oro
O
J
z
rn
a
In
x
rn
Cn
0
Z
0
a
d
0
S
0
6
0
U
CLASS i RIP -RAP 10'iX 6b
DISSiPATOR PAD LEVEL
12'Lxl4'Wx24b USE Soo-
ARMOR SIDE SLOPES 5
/ �' USE FIL1ER FABRIC TOWo
----CLASS 1 RIP -RAP, UNDERUNER ER ARE76.
---�- \
F tINQERU r'F �-
._
y 1' �`�• '�.. r
45 U .
_ / � ...391.0/^\ \
ill 0
-
J97
10+00 10+ZO •"'-"
RISER / BARREL - PROFILE VIEW
1 =10' HOW
1'=5' VERT
A A
t 8 �
L,.. ..
PRESSURE RELIEF
HOLES 1/2" DA
TACKWELD
ALL AROUND
SECTION A—A
ANTI -VORTEX DEVICE
to
TOP IS 10 CAGE CWA MM
METAL OR 1/b' S1EF1 PLA1E
PRESSURE RELIEF MOLES WY
BE OMITTED. F OW OF
CORRUGATIONS AI1E LEFT
FULLY OPEN w*N THE TOP a
ATTACHED.
CYLINDER IS 12 GAGE
CORRUGATED AIrTAL PMi
OR FABRIGITED FROM 1It
STEEL PLATE.
NOTES:
1. THE CYLINDER MUST RF FOLY
FASTENED TO THE TOP OF
THE RISER.
2. SUPPORT BARS ARE ATrAMW
BY STRAPS BOLIED TO TOP
OF RISER.
NOTE:
1. 18,10 RCP SHALL BE TONGUEM 44GROOVE TES C AND NED
0 RING GASKET MEETING AS
JOINT OF ASTM -C-361 LATEST.
/4 RESAR 12"
Designer
WLkR
Scale
AS NOTED
Drawn By
Date
JAC
11 28 O1
Checked By
Job No.
JJJ
200147
ELEVATION
SECTION
1/2" PREFORMED JOIN'
FILLER, 12" WIDE
2000 PSF MIN.
BEARING CAPACITY
BENEATH COLLAR
ANTI -SEEP COLLAR
Nn
�2
Summary Information
Cornerstone Park
Extended Dry
uetentlon rona - Lot o
Max.
Storm
Qpeak Qpeak
Max.
Frequency
In Out
WSEL Pond Storage
r.
cfs cis
ft. ac.ft.
2
14.06 5.22
396.01 0.456
10
20.24 14.55
396.27 0.506
100
30.20 21
396.58 0.567
Elevations
Basin Bottom Elevation
391.5 ft.
Crest Elevation
395.75 ft.
Top of Dam Elevation
397 ft.
Areas
Permanent Pool Surface Area
0 sq.ft.
Drainage Area
5.30 ac.
Impervious Area
4.39 ac.
Other Parameters
45 LF 12 /
Design Rainfall
1 in. runoff
Drawdown Device
Skimmer
"
Min. Drawdown Time Req'd.
48 hrs.
Min. Detention Volume Req'd.
0.351 ac.ft.
Detention Volume Provided
0.422 ac.ft.
M CgV1l01 W S*U SEED AND 0" AL BARE
AREASaxaff #i AREAS WHERE PLANT Iffimm Is
PRICED AFTER CONS"IRUCTION IS OOWLE"M SST aw
mom IN PLACE [MMIC GRASS NAS BECOME
ESTAN 00.
CORNERSTONE PARK
RALEIGH, NORTH CAROLINA
NOTE:
SKIMMER MAY VARY
SLIGHTLY FROM
ILLUSTRATION
IOUTLET END; CONNECTION
TO OUTLET PIPE OR RISER
VENT
SCREEN ACCESSIBLE THROUGH I
DOOR
FLOAT
BARREL PIPE LONGER THAN SHOWN
NOT INCLUDED WITH SKIMMER
SUPPLIED BY USER
--- FLEXIBLE JOINT
MANUFACTURED BY FAIRCLOTH
SKIMMER DETAIL
N.T. S
Lot 8 Extended Dry Detention Basin
Skimmer to Use: 3" Skimmer w/ 2.5" head
Volume to be Drained = 15,202 cu. it.
Draw Down Time = 2 days
Orifice Area = 5.98 sq. in.
Orifice Diameter 2.76 Inches
400
396
394
392
390
388
-----
—
----------
7.0
45 LF 12 /
-
"
--- --
386
-
-
10+00
10+20 10+10
SKIMMER / BARREL
CN CN
10+60
- PROFILE VIEW
1"- 10' HORIZ
1 =5' VERT
10+80 11+00
2' PVC FEMALE ADAPTER
12'x2" BUSH
12' PVC COUPUNG
12' PVC PIPE \
2" INSERT FIMNG
(ryp)
IN FROM
u I 1 2" PVC PIPE
2' PVC PIPE I
CLAMP ('IVP)
2' FLEXIBLE HOSE
CONNECTION DETAIL TO OUTLET PIPE
PART OF SKIMMER DEVICE ASMMBL
EXTENDED DRY DETENTION POND LOT 8
SEAL
15423
l ¢l3/ems
WITHERS RAVEN EL
ENGINEERS I PLANNERS I SURVEYORS
111 MocKenon Drive Cary, North Carolina 27511 tel: [phone] fax: [phone] www.withersrovenel.com
Sheet No.
10

_
~ ~ i i ~ ~ VIRGA \ /
•n,. ~ f ~ ~ . ~ is / ~ ~ ~ i fx - /
~ - ~ ~ ~ , ~-~i ~ 281RI5 INICA
\ i ~r / .i ,r~ ~,,Mr / i , ! ~ ~ ~ ATA
~ ~ _ 7 5AGITTARIA LATIFO I~GIN CA ~I -~i' ~ ~ ~
/ ~ ~i , t / r i ~ ~ \
/ , ~ ~ / % ~ ~ i ~ / i ~ , rr ~ A r k ~ ~ . ~ ~ r ~ ~ ~ ROLIN ~ \ , ~
' \ j ~ \ \ ~ r / I IRGI ~ \

~ / r / ~ • 2 NYMPH~A OI~RATA • ~ \ • 7
' ~ 27 P UM V RGATUM \ , • S ARIA 36 AEI \
~ ~ ~ IRPU GEN~ I I P ANDRA
23I I1YM LLI OLINIANA
, / , ~ ~ f / r,, ' ' N A F _ ,
~ ~'t ~ ~ ' ~ i INIGA . ~ ~ ~ / ~ \1 , , 26 PELTANDRA V R6 ViRGINIGA - - - __-.;--;,i 13 Tt1At1 D LBA
~ ~ ~ ! ~ ~ 6 I ZIZANIA AQUATICA f, Q - ~ NIA AQUATICA • ; ; Q ~ Ck 49 SAUR UU5
~ ` / o , " ' 64 PONTEDERIA CpRDAY ' • Q ORUS 10 _ _ EDERIA CORDATA `
~ ; , ~,.r-------.. 30NYMPIIAEAO ~ / , r JYMPIIAEA 0 TA _u 17 ZIZ U r`
r='.~ 0 0 1 1 'J r , EN CAROLINIANA 20 Ttl D • • ~
~ b , ~ SC S PUNG ? • ?
r ,o ° v ~ / I 1 Ci' / ~ `r' ~ A / ~ ~ ) r,,~. .5 r''~ / I 19 CANT rte. % \ , 15 AU SCERNUUS ANNA FIACCI . ? 19C .
~X j • ? • • ?
, , ~ I i ~'i j / ~ I AA 49 SAURURUS CERNUU ~ ~ ~ ,
~ / _ _ , 'iii % . / r 4 4`1 - - ~ ND t~ / I BIFLORUS ~ 44JUNCUS 17 J C 5 IFLORUS
59 ZIZANIA AQUATICA - 435 30 TYPH G TIFOLIA
/ 17 TYPhIA ANGUSTIFOLIA "-~_~•-,4 ~ 87 PONTEDE A C RDATA
19 9AURURUS CERNUUS - _ 1- _ _ 5 A A Ai'ITf~ ~}C -
POND , ~ r i i _ INICA NTING PLAN VIEW T DERIA CORDATA -~'T-lea-~r~ PIA 43 PONE _ v IRPUS PUNGEN A GERIFERA
II " ' 40 PELTANDRA VIRG N CA 0 UM ~ ° ~ ~
~ ~ -
i' ` \
~ I I r / ~ / ~ / ) )
1 ~ / ~ ~ ~ / ~ ~ ~ ~ ~ 1 1 ~ , / , ~ r , , _ 4e r CDN~.~ i ` s ' ~ 8AY
~ ~ ..ATM ~ ~ 1 / \
~ 1 1' ~ ~ 1 l I ~ f~E i HIGH
~ ~ ~ &IY ~ , ~ MARSFI t/
% ` `l ~ i ~ - 43 ~ ~ ' ~ 32 LF 24e RCP
' i `'1 ~ " 1 CLASS ?0 o O,~x-~-- - ' ~ I I II 1 4,3~ ~ ~ ° Q i ~ r 1 ~ WN~jIVr1 S
i ) / 7 ! 1 - ~ ~ o ~p~~~ LOW IllARSI~ / LOW l SEED AID MULCH ALL BARE i MARSH
i ~ ~ a 1 r' ~ IRL/1~7 GAt~LI"1 11~ /Y[GN 11f'~11L ~-LIM~ f , _ ~ ~ I ~ INV 421:40 M+UERW. IS ~ ~ / ~ WHERE PIANf t
, , - ~ ~ ~ PLACED AF?ER g71r~11RUC110N IS C0111 • / I ' ~ ~ i ~--'"`y FENCE SHOULD RE11+WV NV PLACE INVi~ r~a ~ fUC110N IS COMPLETE S~ HAS ~ MARSFI ~ i NV PLACE UNt~. ~
.s ~ s ~ 1 ~ w
1 ~ I , / DISSIPA Y..
1 ~ 48 r CON~E'1E _ 24 fES , . L~ FIiER I , ~ w _ ~ 4200 LOW MARSH ~ ____.f---~" ~ .
1 ~ ~ l l _ - ~ % .~`M r ~ i 1 I I _
1 1 1 ~,1 I - 1 I ~ I - D POND - w WETLAN LOW
D6N / t i t ! - . - MICRO ~
1 l ~ I -
°`M,. i i I l REAS PLAN I~EW 435 - _ ~ . ,
440 _ 1 10
SCREEN LE rHROUGH ~ ~ " ~ ;Fad ACCESSIB
_ DOOR 438 t
- NOTE: PLANT LIST
436 ~ ~ E~ SKIMMER MAY VARY Common Name S acin QUA SPECIES
- SL?GHTLYFROM
- - - ILLUSTRATION 434 - _ i a Golden Canna 3' o.c. 24 Canna fiacc d
DON ' a S ider Lil 18" o.c.
432 - FLOar 127 H menocalils caroUrnan p y Y
.oar Blue Fla Iris 18 o.c. 112 Ins vlrglnica 9
A 4~0 I~fR s Shore Rush 2' o.c. H CHIP 132 Juncus blfioru ~ oy p~
_ 4 ' f ra Wax M rtle 5 o.c. ~ 25 Mynca Geri e Y
INV=428 OUTLET EAD; COApVECT10N 428 ~ ~~``y TO OUTLET PIPE OR RISER BARREL PIPE LONGER THAN SHOW 'R rFUw SHOWN orata Fra rant Water Lily 3' o.c. 1 E A L
- ~ 4, ~ NOT INCLUDED WITH SKIMMER 73 Nymphaea od 9 ~ SKIMMER
SUPPLIED BYUSER Panicum vi tum Swifch Grass o.c. 81 ~ ~i~2~
426 ' 'nica Arrow Arum 18 o.c. ~ 77 Peltandra wrgl ~al~ ~ „ ~,p
32 lF 24'r RCP C o o.3~x Pickerel Weed 18 o.c. Ry d`' 234 Pontedena cordata JAY JE
424 FLEXI6LE JOINT f001PIG Broadleaf Arrowhead 18" o.c. 210 Saglttana latlfolla
x x 4 - SKIMMER OET
- _ 4 ~ N.T. m us Lizarld's Tail 2' o.c. 156 Saururus Ce u " I~'~
ns Three-S uare Bulrush 18 o.c. 231 Scirpus punge 4
420 Powde Thalia 2' o.c. 3 0 33 Thalia dealbata ry
ti ~ ~ ~ tifolia Narrow Leaved Cattail 2' o.c. 47 Typha angus
~ ~ ~ Wild Rice 18" o.c.
r 137 Zlzarna aqua~ca
f0,~ 10+~ 10+20 NOT~• , .
G GASKET GROOVE W CONFINED 0 RIN 5 AHn-r~RrFx sE~E _
1. 24 it RCP SIWl BE TONGUE AND - -POND 1 TM-C-3s1 ~ArESr PROFlLE VIEW aNT of As &4RREL -443 [ATEST AND J 434 - TOP of EL- .o - - _ -
RISER ASI~I C .THE NEED TO CaNPl.ETELY DRAIN c -
1 10 HORII ~p 4 G+~~E VALVE CLOSED UNLESS Lot 9 Exlenrled Wetlenda • Pond s 1' Lot 9 Exbnded We>bands Pond 1 1=5 VERT FOR YgINTENANCE PURPOSES, r w~ 2• head ~ Skimmer to Use: 2' Sklmm Handa • Pond 2 ~ . - ~ -AL ."0" 2' Skimmer wl 2" head ALOE - - -
~ ~ ~ NECESSARY Skimmer b Use: 2 8kimme ~ , d = 2,966 cu. tt -
Volume to be Dreined = 5,793 cu. ft. Volume ro be Dreined = 2,9E • Draw Down Time = 2 days Draw Down Time = 2 dad N 2 d®ys _ - _
4 RE&iR 11 H WiIY Orifice Area = 2.58 sq. in. OTiflce Area = 1.; O.C. EAC rea= 1.32 sq. in. ~ _ _ - " - - - - -
. 0~~ Dlarneter = 1.91 Inches Orincs Diameter = 1; A A : 1.301nchea ~ - - etar 418 ~ '
• ~ I -
• I 0 ~ A' a.• . 426 Lf ~4 COHCRER~
0 0 ~ _
PRESSURE RELIEF + ~ NOLES 1/2" DG4 Summery Intomwtlon 424 . r . -
n' &WREI. JOINT su~ry In ~ tomenstone Pen` ppE 1/2 PREFORMED Cameremne yNeb,,,d Drenlial Pond - Lol9 Bedn 172 ~,a-i.ot9~~ _ _ AT 3' FROM 6415E - _
PLAN VIEW wELDEO (iYP) R 12" WIDE E,a«,dedwbuendoe~nuonPond-Laeeernlh ~ FILLE , 5tam gpsek overt hex. slam gpsek oDeek ~ rte. 422 T._._ - - - 8'L 8'W x 18b Oul WSEL Pand$torepe
N p~enoy In Dal wSEL lorege F~equenay In Oul 1 ~ ~ ~ ~ ` ~ fl. iL r. ate oU p de ab ft. ac.R U5E ~
N I p 9.51 A.64 433.88 0 2 11.51 10.80 ~ 10 20.85 2DAe ~ 10.80 431.93 0.128 42Q 20,19 432.15 0.143
S 10 CAGE COItltUGATED y' ; j 10 18.28 15.e 434.15 0 5 METAL Olt I/8' STEEL PUiE. ` ' 100 28.88 24.14 434.50 4 13 100 32.48 27.tb ~ 29.15 432.74 0.193
p PRESSURE RELIEF NOTES INY ~ . w a ~ ~ ~ ~
8f OMRTED, IF ENDS OF " CORRUG~ITN>tb ARE LE1T r ~i ~ ~ ~ w w ~ 428.5 fl. /
FIAlY OPEN NFIEN THE TOP fS EbveBolre E3evetlone Beeln Bolton Elevrlm 430.b fl. Basin BdWn ElereYm 78• ATTAt~O. EL~EI/AnoN . EbMrbn 432.0 ft Pennenent Pad Elston ~d Elswbn 430.0 ft. 9
rnc~wElD SECTION Permanent Paa ALl AROUND Crest Elevetbn 433.8 ft. t:reel EleveOon ~ 431.5 ft. lere0on 433 ft. t IQ'I'~
H C1IADER fS 12 GAGE 435 fl. Tap of Dem Ele~on ~ CORRUGATED METAL PN'E Tap of Dam Elevrion 10+20 ~0?40
J OR iABIMGIIED fR011 1/b' Areas Mee z srEEl Pun:. 1000 PSF MIN. NOTE: ~s~ ~ , KE'T
pennertant Pool Surfeoe Arse Pemrenent Paul ErteYoe Aree N 4B' B%AIPNG CAPACITY DrehaOe Area R Drelnage Area 3.18 ea ~ - " 0 RING GAS a a - VIEW POND 2 RCP SHAH 8E TONGUE AND GROOVE W CONFlNED REL PROFILE i. 24 >a RISER ~ ~ 0.55 ec.
m WADI Gbl.lA ImperviarsArea 9.81 ea ImpeMous ~ //6 xE~2~ 1 1 4~ x 1 1 4 ANGLE OR 1. iF~ C1IWDER MUST ~ i1elY C-443 LATEST AND JOINT OF ASTM-C-36~ LATEST. 1-10 HORIZ MEETING ASTM
51'AC FASIOED iT) THE TOP Oi 08rer Peramrers _ 1 1/4 S1EEL PIPE ~ RISfR OltrerPnmrere 1 in. nnoff Deeipn Imintrl = ' CLOSED UNLESS THE NEEO TO COMPLETELY DRAIN 1 in. ruioi( 1-5 VERT 1. KEEP 4 GATE VALVE
i) 2. SUPPORT 9ARS ,IRE' AiTi1pRD Deelgn ReldeM ~ Drewdawn Devlas ~ $b POND IS NECESSARY FOR MAIKIENANCE PURPOSES. THE
U) BY S1RAP5 BONED TO TOP - /y~i ? AD D~awdahvnDavfce OF RISER SEEP liV(,U'111 D~o~ 7i~ pegy. 48 hns. MNn. Drawdown 11me Rq'd. ~ 11~ pp'd. 48 hna, ~ VaMnM qpy 0.094 Batt
~ ~N nd.~w,,,v~,r~~mnfidlL 0.130 ao.fl. Nh.OdenBonVaMne?RegH.
0 J5LWIVN A-H I . DelenOon volume Paovlded 0.133 mft. OelenUai Volume lums Pmvk sd MUM MIL
RTEX DEVICE ANTI VO a
Sheet No,
0 Revision Date B Designer Scale
WITHERS RAVENEL )ED DETENTION WETLAND POND LOT 9 ENGINEERS I PLANNERS I SURVEYORS
No. W&R AS NOTED CORNERSTONE P-A-R-K
Drawn By Date EXTENDED D T CBp 1/24/02 111 MacKenan Drive Cary, North Caroifna 27511 tel: [phone] fax: [phone] www.withorsrovenal.com
RALEIGH, NORTH CAROLINA o Checked By Job Na.
0 KU 200147
U

'B' RIP-RAP CLASS
DISSIPATOR PAD
USE FALTER FABRIC
U NER ND~RLI
r'
_ ~ 4 MYRICA GERIFERA I ~ TYPHA ANGU5TIF041A
12 , FES 0 ~
INV .426.00 tl~ ° ~ 1Qk 8 PANICUM VIRGATUM I SAURURUS CERNUUS -
° , ~ - _ O , O 30 9CIRPUS PUNGENS . - _ y ~ 46 JU Lit 1115 _
_ ° - _ o , C.~ _ 0 0 9 THALIA-DE,4l9ALA
4 ANNA FIAGCiDA 28?iAG~h~I'ARI~.lA11FOZiA~~~ ~ _ 5C
~ ~ f ~ 0 v,Y.---„'~.
/ ~ - 0 ° - _ -
' --''r~ _ - - _ _.w ~ ,Y ; . r . _
~,~r I I ~ ~
i ~ y / / / ~~^"1 , I / / ,'~";~,,~~r,v
R!P-RAP""" / 1 _ + y y y + r+ l I ti,. ~.~'s i + + + I
ATOR PAD / 426.1 ' y y y i + + + # + 4 4 # ~`4> y y y y y y J'
19 81Yx9b LF 1 RCP, TER F 14 0 0,39X USE fll y ~Y y y y W y y y y +###+++++++++++4++
' 428. y y y y •Y y •Y y .Y .Y "Y ++++++i++++++++++
y y y y y y y y y +i++i+++ 6HYME ARU AN 4 + + + + + + # 4 # 4 4 # . y y y ~Y y y d' y W r++
" y y y ~Y y y i I P 5 y + 25 SC U
y y y y y y 'Y t++++ + + + +
_ ~ ; I y y 'Y y 'Y y y +
! 427.5 1~ l I I r, y y y y y / 41 5A 5 E UU
0 + 428.5 , NN~I I// y y y y y I// y y 'Y y y y
SK ER 0 I I y y y .Y "Y I /
¢ Oo .Y y W W y y y / I l I I l Y• y y y y W y 1 1 I l I/ I.I
1 0 0 l I ry I Il I I l
I ° o .5 0 0 I l / I / y / I lI I / / / l/I/ /I /I I
s o , f
" 4 - 60 ZIZANIA AQUATICA
0. 2 ~ _ - _____._.~_._.._._.---------T._______________~- 9THALIADEAU3ATA
__30THALIADENJ3ATA - 275PONTEDERIACORDATA 33 SAGITTARIA LATIPOLIA
428.5 / 430 - --~a``Gi~PDS~PIING~NS_-_-__--_ - SAURURU U5
4 :r----''~ - ~ T.tO~PANieUMATt1MM- ~~r----_ - - 45 NYMPHAEA~~DOP~ITA.
- - 531RI VIR I
~ ri ~ P N P VIEW
_ ~ ~ e .

- -
_ _
- ...._i _ _
f ' VIEW . NTtON Wl:7LAND POND DETE MARSH _ _
- , ~ =10 _ .-----122i!.52.-S~..-------
Summary Information ~ _
Cornerstone Park
Extended Wetland Detention Pond 1-Lot 10 PIA ~ Storm Qpeak Qpeak Max. Max.
AIViI-V01lIEX - . - - _ Frequency In Out WSEL Pond Stan~ga
_ r. ds cfs ft. ac.ft.
~ MADE 5 ~V NSEL - . 5 3.58 430.50 0.101 2 39
OF QW EL 0 1p 5.34 5.28 430.57 0.106
431 - 421?0 8.30 430.72 0.119 100 10.17 FORE AAY
4" 0~ 1 - - 300 SF

~ ~ - Elevatxxrs
- Basin Bolton Eleveti~on 427.5 . 428 PerrneneM Pool Elevator 429.0 ft.
Crest Eleveti~on 430.3 ft. LOW MARSH
428 ~ 4 X 4 TEE Top of Dam Elevation 432.0 . 1401189 SF

424 " Armes
- x 18 Permanent Pool Surface Area 2288 sq.ft.
FlL1ER Ai9R1C " 8l x USE 422 _ Drainage Area 2.74 ac. •
Impervious Area 0.99 ac.
420 i PLANTI G A P
Other Parameters - _ ~ ~ =~o' _ _ _ r
N ao Design Rainfall 1 in. runoff tp ~ ^ 'mmer
w w us N ~ Drewdown Device Sw N N N N r, w w rN, w w w w Min. Drewdown Time Req'd. 48 hrs.
Min. Detention Valume Req'd. 0.064 ac.ft.
Detention Volume Provided 0.088 ac.ft. No~E.
10+40 10+80 10+~ 10+00 10+2f1 1HE co~RACroR sHAU sEEO AID MLACH Au eaRE
Lot 10 Extended Wetlands -Pond 1 Skimmer to Use; 2' Skimmer wl 2"head AREAS ExcEPr IN AREAS WHERE PLANT MATERIAL ~ AFTER corr~sllrrurnoN rs coM~~Tr~ sn.r FENCE
NOTE: = 3 852 cu. ft. » Volume to be Drained , REMAIN IN PLACE 1IW11L ~ h{AS BECDw1E
_ TONGUE AND GROOVE W CONFINED _ PROFILE VIEW 1. 12 d RCP SHALL BE Draw Dawn Time - 2 days RISER DARREL ESTABUSNED.
' ' N GASKET HEELING ASTN C-443 LATEST ANO 0 RIG Orifice Area = 1.63 sq. in. vENr SCREEN ACCESSIBLE THROUGH
1-10 HORIZ ' JOINT OF ASTM-C-361 LATEST. Orifice Dlametsr = 1.4t inches 1-5 VERT DOOR
PLANT LIST
NOTE: TES Common Name S~acin QUA SPEC
SKIMMER MAY VAF TER MAY VARY
SLIGHTLY FROM A ~ A TLYFROM nna flaccida Golden Canna 3' o.c. 5 Ca
ILLUSTRATION RATION ider Lil 18" a.c. 46 H menocalUs carolirnana Sp y
~'4 REBAR 12" o.c. EAC~+ waY Y
~ ° ' vir inica Blue FI Iris 18n o.c. 53 Ins g
•'4 a PRE5SL1Rf RELIEF o o ~ HOLES 1/2" Dw o o r' . 5 O h re Rush 2' o.c. 46 Juncus biflorus S o FLOAT 5' O.C.
N i. ~ 6 i, 4 M nca cenfera Wax Myrtle y
PLAN VIEW o o roa a to cADE DDFFUOOED h N o ~ru. oR r/a" SIEfl. pArE N m haea odarata Fra rant Water Lily 3' o.c. 45 y p 9
o PRESSURE ~r Norts wY N BE ONITtfO i ENDB Of , vi tum Switch Grass 3' o.c.
coRRUCAraNS ARE Ltr•r BARREi. OUTLET END; G'ONNECTION ~ g f?~) FULLr OPEN w?~r+ n[ rDV a - ~NECTION ~ 18 Parncum nga n
ATfACHED. ~ 1/2 PREFORMED JOINT TO OUTLET PIPE OR RISER D FlLLER, 12 WIDE , oR R?sER ' P ntederia cordata Pickerel Weed 18 o.c. BARREL PIPE LONGER THAN SHOWN 275 4
CYLINDER a 12 QACE d 18" o.c. NOT INCLUDED WITH SKIMMER 110 Sa ittana lat~folia Broadleaf Arrowhea g
CDRRUGAIED MErAI PpE • . ~ a ~ ~ O oR FABRMATED FRO~r r/e' ~ i ' SUPPLIED BY USER 144 Saururus Cemuus Lizard's Tail o.c,
~e" srm PlAIE N v .i un ens Three-S uare Bulrush 18" o.c. 87 Scirpus p g a
d ram r- ALL AROUND r . Ig1E5: n
F- 1, iNE CM~fR MIST ~ fIdN.Y FLEXIBLE JOINT 48 Thalia dealbata Powdery a ~ c~~C/
a FASrowEn ro nr rov a ~ n+E RfSEIr. 2000 PSF MIN. L ved Cattar`I 2 o.c. ~ ~ A® 14 T ha an ustifolia Narrow ea w .p ~ESSip 9 Yp 9 n w° s° ~ a
? z suPPnRrr evrs AflE A1rACNED cn ~e" EA' STRIPS BDl1ED rn rDP SECTION BEARING CAPACITY " a uatica Wild Rice 18 o.c. ; 60 Zizarna q w
Q RsER. ELEVATION BENEATH COLLAR m /g ° r 1849$ r
~ $PAG'ERZBAR 8 REEMR
I (1~'P) N ~y ~ a
N D SKIMMER DETAIL ~®40~' j1 11
Z SECTION A-A -SEEP COLLAR ANTI N.r.s
O ".w, , ,w w~ru Af-1 AAf
ANII-VUMItA UtV c.t
a IV1~
Sheet No,
' Date B Designer Scale
C) N0. V w&R AS NOTED
~ Drawn BY Dote CORNERSTONE PARK I LOT 10 WITHERS R"ENEL ,ED DETENTION. TLAND POND ENGINEERS I PLANNERS I SURVEYORS 12
c JAC 11/28/01 EXTENDED D' 111 MocKenon Drive Cary, North Carolino 27511 tel: [phone] fox: 919-467-6008 www.withersrovenel.com
o ~ NORTH CAROLINA ° Checked By Job No. 0
K11 200147 U

_ . _ _
_ __f_ -g~jRPUS-PUNGENT--- y_"
~ ~ 109 IRIS VIRGINICA ~ ~ _ _ _ ~ ~ MtYRfCA" _ _ _ _
~ ~ \ ~ _ .«2~~ANI~kHnFVIROATUM 53 SAURURUS GERNUUS _
- ~ - ~ ~ ~ ~ ~ ~ _ - - _ - 25 SAURURUS CERNUUS 67JUNCUSBIFLORUS ~ - - _ _ _ - _ _
~ f _ _ ~ - - _ ~ _ -2-~SAGI FOLiA~.~, _ _ . -
~ i _ - ~ _ - . . ~ iiRUP~S-CE ~ r .
l ~i ~
, ~ ~ ~ / ~ ~ PEITANDRAVIRGINICA
i , . _ ° _ - 5 SCIRPUS o
a ~V "i 0 Oa
. N ~ ~ -
a I I
~ ` css ` A. J ~ ~ ' ' , , ' ` ' ~ --~`"J 56 JUNCUS BIFLORUS
~ ~ , t ,mow. B RIP-RAP \ ,;,i ~ _ I r TTARIA IATIFOLIA
CLASS OIS5IPA - _ \ ~ ; _ _ 70 ZIZANIA AQUATICA
w- 35 Lx - . CON~2tE1E i21~hri2ro ~ 38l o- - 80 PONTEDERIA CORDATA
~ FAQ , R~ ,,w/n:AS~f _,r___ ~ _ 4 I NYMPMAEA ODORATA
~uNOeRLINER ; _ 58 SAGITTARIA IATIFOIiA ~ G -PLAN VIEW - PIANTIN
43 PONTEDERIA CORDATA _
_ 25 SAURURUS CERNUUS ~ "_2Q' _~.____~3.,CA1V1~fl7~CiDA
~ 39 Tt1ALIA DEALBATA 45 PELTANORA VIRGINICA
_ ; . ~ _ ~ __J.,.~__~_. _
~ ~ 4~ ~ ~ E ' ,V 10 o ~ - ` . o , , . ~ ~ 5
o ~ ~6a,. o - \ _
Q _ ~ ~ _
C:~ 00 ° ~ 408.5 + o - . 4085 f _ -
~ i ~ 'TFVVVV
12 i W 'w"^ / ~ ~ ,rte _ OW 401,5 - _
. . _ __-.M____ ~
r .
f 8 ~ _ _ r • ~ f~ 8 RIP ,RAP
CLASS III O 4.02X ' - _ OISS~AIOR PAD ~ 0, r~ ° ° ~ I~iGH MARSH a 158t~69 SF °p - \.A~~. i"~ , may/ ~~~p~y,~ ~Va a ~ /
~ 0
i` USE' fFKK1ER F~A~IC - _ 00 °o ~ 942.90 SF a~ " _
i
SKIMMER l~ . ~ .
it s .F. r ~ ' ~ f
' ~ / j
- ~ - ~ - . x
_ , -PLAN I~EW - NG AREAS d PLANTI
.r 1=20 _ _ ~ _

J
-PLAN VIE1M D POND 2 N WETLAN
I M- ~ ~ i -20
PLANT LIST
mon Name S acln PECIES Com QUA S
Golden Canna 3' o.c. 23 Canna flaccida
414 _ Summary Information Blue Fla Iris 18" o.c. 109 Ins wrginica 9
- - Cornerstone Park Shore Rush 2' o.c. 123 Juncus biflorus
WeUend Detention Pond 2 -Lot 10 Extended 412 Max. It#ex. Wax M e 5' o.c. enfera y~
• • Storm QPeak Qpeak - WSEL Pand 3torepe 6 Mynca c P°nd Fra rant Water Lily 3' o.c.
Frequency In Out 410 _ T ~ ~ ft. ac.ft. 41 N mphaea odorata 9 sc.ft. y ,
10 t~V 407.5) .183 g110F ~ 2 5.88 4.17 410.70 0 Switch Grass 3 o.c. atf~ 20 Parncum virgatum
- ~ - g.g8 410.81 0,195 408 10 7. 0,195 AnlpwAnlm 18" o.c. 100 Peltandra vinginica
9,84 410.91 0.20 100 9.89 o.zo6 Pickerel Weed 18" o.c. 105 Pontedena cordata
4 - - _ 4x4 ' Broadleaf Arrowhead 18" o.c.
' 151 Sa ittana latifolia 9 ,
- - _ Elevations lizard's Tail 2 o.c. 120 Saururus Cemuus
404 - _ - ~ _ _ Basin BoBa~ Elevation 407.5 ft. - - - GbNCRE1E 409.0 ft. Three-S uare Bulrush 18" o.c. 33 Sci us pungens q ~ ,
_ PermenentPoolElevation - _ • , - Crest Eleveti~on 410.43 ft. Powde Thalia 2 o.c. 39 Thalia dealbata ry
402 _ - ; ~ • • Top of Dem Elevation 411 it. Wild Rice 18" o.c.
ANCHOR ~ LE ar _ - 70 Zizania aqua~ca
~ - seas - _ Permanent Pool Surface Area 2885 sq.ft. - sq.ft.
398 ~ Drain Aree 3.56 ac. - ~ Im en+'lous Area 1.41 ac. ec. ac.
USE flLTER FABRIC_ P
396
Other Parameters - 1 in. ru in. rurrolf
394 - - Design Rai II pre~~ p~ Skimmer
v, Min. Dr'awdown Time Req'd. 4$ hrs. hrs.
so ~ 4 ~ Min. DelantirJOn Volume Req'd. 0.121 ec.ft ec.tt
o Detention Volume Provided 0.121 ac.ft ac.ii»
ia,80 11+00
10+20 _ Fl(,E ~Ew VENT
to+oo Y PRO REL ~I R 8AR R SE SCREEN ACCESSIBLE THROUGH
DODR
1 "=5' VERr
NOTE: NOTE:
1. 24'I RCP SHALL ~ TONGL D GIt00VE W CONFINED 0 RING GASKET ILL SE TONGUE AN MAY VARY SKIMMER
~IEETiNG AS1~1 C-443 LATE A ~ A T AND JOINT OF ASTM-C-361 LATEST: C-443 LATES SLIGHTLY FROM
2. KEEP 4 GATE VALVE CLOSI UNLESS THE NEED TO COMPLETELY DRAIN VALVE CLOSED
/4 ~ 12 o.c. ~+cH war 1HE POND IS NECI:~'SARY f ILLUSTRATION CI~4RY FOR MAI~?~IANCE PURP05ES. NE
o . ~ o o ^
0. PRESSURE RaJEF ' " M M;
NOLES 1/2" DIA o o ° ~ p TOY IS 10 CARE Ca11111GVED 4 . FLOAT
~ PLAN VIEW ~ oR 1/Q ~srm PLATE. ~ PRESSURE 1>E~F MOrf.S MAY
° eE oMRrEC, ~ EIOS Or
N CORRUOAfldVS ARE IEiT wa.om y ~ IMEM THE TOP a 1 2" PREFORMED JOINT NOTE' (ttP) Fuu. PEE ~ OTE•
ATrAC~, FILLER, 12 WIDE ~oNn~croR sEEa ANE) All BARE LEAS EXCEPT N AREAS PUNT ~1ERdlL a ET END• CONNECTION
. AREAS EXCEPT ~ CYLINDER IS 12 GWE '~•t':'i : OUTL ACED AFTER a>M'S1RUC110N IS SI[T FENCE HOWN
MfTAL PIDE ~ PLACED Af OR fq8 M,I1E0 fROll I/B" ~ R~IN 11 N 70 OUTLET PIPE OR RISER BARREL PIPE LONGER THAN S RETWW IN PUCE UNI11l GRASS FNS BECOME ~ryerarrsrr+, ,
STEEL. PUIE• ,'1 E.~A~~. ~ NOT INCLUDED WITH SKIMMER .~°'`~.N (~,AR illWMw.V. 0d po.ess~ ~ ~0
N O TACKWEtD „ ALL AROUND 1 ' 1~. TTIE CYUI~ER MUST ~ FkUM.Y SER Ma. ~ o.» SUPPLIED BYU ~ ~,.•F~SS?p
PAStEr~D To ~ ra' of 2000 PSF MIN, Lot 10 ExterlCN N Qy~+~ ~Y .,i•
J iF~ RISER. 2. suPPORr BARS ARE AITACNED BEARING CAPACITY t0 USE VYledanda -Pond 2 z " ~ Al l.©t 10 Extended ~ " SklmrrNr w12" head
z sr~PS ~ SECTION rH COLLAR Skmmer ~ ae• ELEVATION BENEA SidmmertoUse: ~ 2 = 1~~9$ 256 cu. ft. FLEXIBLE JOINT ',t i®(f~ see' j~/ ( ®s
a Df aISER, volume bo be o Vnlume bo be Drained 5, ,,~L o..Gl iV~;,.
o: /s K 12• REa~ Diaw Down Tin SPACER 6AR ~ Orif Diaw Down Time = 2 days ~d'~~ . in. °1v Ty L,1 Orifice Area 2.35 sq
~ Or1flC6 I SKIMMER DETAIL ' ear?,,,,r O~Ilce Diameter= 1.73 Inches
N.r.s
~ eNn_~Fp rn~~1R
p SECTION A-A
- RTEX DEVICE ANTI VO Nrs
a Sheet No.
0 K WITHERS R"ENEL
--bate B Designer Scale
o No. R W&R AS NOTED CORNERSTONE PARK 0 ENGINEE MED DETENTION WETLAND POND 2 LOT 10 RS I PLANNERS I SURVEYOORS 919-46 9-3340 fax: [phone] www,wlthersravenel.aom
T_ - EXTENDED ~ Drawn By Date lot JAC 8 Ot 01 111 MacKenon Drive Cary, North Carolino 27511 tel.
o 10IGH, NORTH CAROLINA Checked By Job No.
5 - - - I L__~_ o KW 200147
__Mmmmmm~ _~i - _ 11 - - - mm~ - U

19 CANNA FLACCIDA 3 I PONTEDERIA CORDATA
42 ZIZANIA AQUATICA 104 JUNCOS BIFLORUS
~ - ~ 120 SAGITTARIA LATIFOLIA ; , 81 SAURURUS CERNUUS
_ ~ 93 PONTEDERIA CORDATA i 10 CANNA FLACCIDA
~ 48 SAURURUS CERNUUS - ~ 46 NYMPHAEA ODORATA
~ _ _ 7 CANNA FIACCIDA ~ ~ = j' .
. _ 23 SAURURUS CERNUUS ~ 69 PONTEDERIA CORDATA ~ r i' 143 ZIZANIA ~
r _ _ 83 T ~ ~ - r-- _ - - , r. ~ UN EN
~ ° FL9RUS - _ ~ '(2 PANT IR6AT
° o°a Fp~~ . f p _ _ i '
. ~ , ° 1 r p p ~~CORD - 1
0° ° o o PMAEA Q~?Pd1fi~C , 1 11 11+, . / 1,,11,, 1~1 lll,,
.x , , , u ~ ~ , r~, ; 1111 1 . ,1,.
.4 x`t . ~ ~ ,111 1 111 • • • 1 s xr~'S' 1 1 r . - 4 ' 1 \ p \
31 PANICUM VI i r i r • • . , , 11,,. • • • • D • • ~ II 0 p~0 \ '
24 ! C(NVCREiE ~ ~ , ~ 0
R~ER W H ~ ~ ~ 845CIRPUS U 4 SCIRPUS U N , D D D ' 1 0 . • • . . ; 111 0 DD DDD FERA
CLASS. B RtR"~RAP _ _ _ i DILATOR P DDDDDDD 111
AD ~ ~ ~ , / l ,#0 tx81Yx15b fl, DDDDDD ,1, 1 D D D D ~ 4 VIRGATUM , , ;
r-- USE ~ILIG1{ FADfS14~ ~T ,11 ti , rJJl,l,ll 1111 r ~ r 11 ~ r.', ~ 11
~ 1 1 I1 fl Il~.l... F~t,. I lJfl,l ,11,,1, 11111 ! ~ ~ 1 , , SPUNGENS I, 1 v ;~y~ I l l~ l l~ 1 1 1 1 1 1 1 1 1 1 ~Y.~ yn k~;r 1 1 11, 1 1, .~y., -7~'• +ix' ~M 7- r ~'X' 11 j4l ~1~,1 ~ 71'1 ~'il r 1 ~f ~ ""'S'i ~l\y y.
~o ~ - ~ ~ 4,
° j _..._.i 900 \ \ /i ° ° ° ~ A . - ~ ` 73 JUNCOS BIFLORUS _ 120 JUNCOS BIFLORU5 /
° _..___._?~4~~~RNI _
o _ v ~38~Yi'hIAAIJGUSTIFOL?A ___~~5~1NfCfkfCCGif~ G 1~1 _ _._-3# SAi~fifARtAt;~TfFOLIA
' ~ ~ 389• CLASS GRIP-RAP _
LUSSIPATOR PAD 30M ~ , o°, 86 SA6ITTARIA~IATiFOUA ~ ~z0
X'LxX'WxXb 386• 389.0 ~ ° ,°o ~ INV ~
' USE FILTER FABRIC . + 0 -
LINDERl1NER ~ + ° ,f o 388.0 1 ~ I
+ 3900 + ~
30 LF ,Y~ RCP - - - 390.0 ~ 390 0 ~ ~ 1 ~
CLASS III 0 XX _ ~ .5 i ~ ~ ~ ~ ~ _
i"
- ~ ~ i _
r ~ HIGH MARSH ~ i ' , .f- 3, 245
T__ ~
- - - ~ O ° _ !~S ° ~S ~ - ~,M,
_ ° ° / p ~ \ _ I _ _ ,0pop i _ ~
O _ _ , _ ~ ~ i _ - - r
. _ - ~ ~ _ f~,.,
ii. !OW MARSH \ p°°° `"1. ~ ~ _ °o p
I 1 1 i 2,46160 SF p p FORE' Y p MACRO /
860,37 547.54 SF ~
r~DED D ~ NT10N WETtAWD POND -i - PUW -VIEW ~XTE EfE
_ _ - ~ ~ i ~ =za
m
\ i
- sEE DET rioRTar
~
To RISER a=394.0 (CONNEL; _ TOP of ~ "PLAN FEIN
394 - - 7QT 390;x_ M t
1=20
GRADE 392 -
ONG BARREL E 1 I i
390 ALONG BAR EL CENTERLINE PLANT LIST
I 388.0 388 - NOTE' QUA SPECIES Common Name S in
z : " t. THE OOIVII~ICTIDR ShIALL. SEED AND All RNNPE
- NPfAS WHERE PUIM wTERWI IS GbNCREIE RISER AIPEAS IN 72 Canna flaccida Golden Canna 3 o.c.
386 _ _ P!?tCED AFTER M NOI Li h re Ruh 2' 358 Juncus biflorus S o s o c
PLAC STEM VV L"~T ~GIYG ~TMiV 11L111rfl IN I~VWL ~ VfV'1~7J MJ 8 Myrica cefifera Wax Myrtle 5 o.c.
f~~ ---.__U~G-IJL _ ~r 384 " p[~ to F rant Water Lil 3' o.c. 68 Nymphaea odors rag y
' CVN1/ /1 NORTH l ERr~S101V 58 Panicum virgatum Switch Grass 3 o.c.
1/~ {/~1~j IilffiW~1 CO~~~~~V/. 382 - _ _ - x x 12 IN'i'T1 FOO wT arr Fllt~ of aw ~ oPE FR011 TOP OF L3MIK in
. a~sT _ _ 4 N GA 272 Pontederia cbr~data Pickerel Weed 18 o.c. n ~I
389 Sagittafia latifolia Broadleaf Arrowhead 18 o.c.
380 213 Saururus Cemuus Lizard s Tail 2 o.c.
n 124 Sclrpus pungens Thn;e-Square Bulrush 18 o.c.
0 00 ~o ~ of ~ ~ © ~ ~ ~
r~ Summary Intorrrration ~ 83 Thalia dealbata Powdery Thalia 2 o.c. ~n
Cornerstone Park 38 Typha angustifolia Narrow Leaved Cattail 2 o.c.
Extended Wetland Detention Pond ~tentbn Pond 3 -Lot 10 236 Zizania aquatics Wild Rice 18 o~c.
Storm Qpaalc Qpeak Max. Max.
10+00 10+20 10+40 10+60 10+80 F uenc In NOTE. ~ Y In Out WSEL Pand storage
_ 1. 48"11 RCP SiHALI BE TONGUE AND GROOVE W CONFINED 0 RING GASKET r, cds R BARREL &IY 2 PROFIiCE VIEW RISE ds ds ft. ac.ft. 12.47 4.83 382.36 0.348
" MEET~IG AS'111 C-443 UTEST AID JOINT OF ASi~i-C-361 LATEST" 2 12.ai 1=10 HORIZ " TO COMPLETELY DRAIN 10 16.08 16.08 10.61 392.54 0.393 ~I
" ~ 2. KEEP 4 GATE VALVE C10SED UNLESS THE NEED 1 =5 VERT 100 22.24 22.24 16.11 392.72 0.438
THE POt~q LS IVECi~IRY FOR ~~r~NCE PURPOSES"
Elevations ~i
A ~ A Basin Briton Elevad In Boson Elevation 389.0 ft. VENT
Permanent Pool Ele manent Pool Elevation 390.5 ft. SCREEN ACCESSIBLE THROUGH
T4 REBAR 12" Crest Elevetlon O.C. EICFi WAY T of Dam Elevatic ~ Elevation 392.1 ft. DOOR
g o oP d. PRESSURE RELIEF a o 0 of Dam Elevation 394.0 ft. NorE:
N NOLfS i/2" OU. o o ~ ~ AreeS SKIMMER MAY VARY
ei _ N PLAN VIEW o e mP is 10 ~ oaenqum ~ . • ~ Permanent Pool Sul p SLIGHTLY FROM ~I rnanent ool surface Area 6285 sq ft
o METAL OR i " SRQ PLATt~ , •'+Ai N PRESSURE NaES wr Drainage Area Inege A~ 7.36 ac. ILLUSTRATION
N 8E OMRTEO• i aas OF o ImpeM0u8 Aria o CORRUOA110NS ARE LEfI ervioua Aria 3.39 ac.
MELDED FULLY OPEN MIEN 11E iOP is ~ •
c ATTACHED. 1/2 PREFORMED JOINT Other Paremeters FILLER, 12" WIDE '
• cnA~Ea a 12 GACE Design Rainfall sign Rainfall 1 in. runoff FLOAT
coRRUOATFn MErAI PavE Ma~' % s ~ Drewdawn Device oR FAdRIGITED FROM 1/Q' ' ° ~ in. wdaMm Device Skimmer N~`g,ol,,,d
SIEEI. PuTE, N M OrawdorNn Trm d rAarMEID Mm. Detentron Volu~ . DrawdoMm Time R 'd. 48 hrs. ~+"°tl`&; rAR ~~`°'YP
All AROUVD 1 " N01ES p 1• ~ Mssr ~ ~r e„ Detention Vdume P . Detention Volume Req d. 0.285 ac.ft. bw ~ rr o~~ OUTLET END; CONNECTION w ~ESSlp p, ention Vdume Provided 0.285 ac.ft. ~ Nq ;
fAS'IEIED TO 1!E TOP OF TO OUTLET PIPE OR RISER ~ Q ~ ; BARREL PIPE LONGER THAN SHOWN q~, ~ ~
? 2, ~,~,~,~pEp 2000 PSF MIN. NOT INCLUDED WITH SKIMMER s 18498 ~
a ~ sn~s °01~D1°'0P ELEVATION SECTION BEARING CAPACITY PP IED BY USE ~ 0 ExWrded Wetlands • Pond 3 SU L R ~ •rF,y
m ~ R1sE1t BENEATH COLLAR Lot 10 ETrlsnded Weti ~ //gg x 12" ~j rye rier to Use: 3 Skimmer w! 2.6 Mad '~i ~T
F- SPACER &IR SkI1nRl9r t0 Utf6: _ (M') Vdume to be Drsined ~e to be Drained = 12 413 . ft `~i y )';,S ~~tf RItIPI~~ d
N N Drew DOVNi TYrle Drnm rime = ~ 2 days FLEXIBLE JOINT
OriRoe ATeI Orifloe Arm = 4.88 sq. n.
0 SECTION A-A OrMoe Dismal a ANTI-SEEP COLLAR OrMtoe Dieme6er = 2.~ incMe SKIMMER DETAIL ~ n
e?~n_vnRTFr nFVii^.F
Q /"Nrl~ ?vi~rwn Wwrrvw MTS t,
3 N1S N15
No. Revisign Date B Designer Scale o Sheet No.
W&R AS NOTED 0 Drawn By Date CORNERSTONE PARK R"ENEL WITHERS
d EXTENDED DI ED DETENTION WETIAND POND 3 LOT 10 ENGINEERS I PLANNERS I SURVEYORS 14
0 Checked By CBP Job No, 1/24/02 RAMIGH, NORTH CAROLINA
111 MocKenon Drive Cary, North Carolina 27511 tel: [phone] fox: 919-467-6008 www.withersrovenel.com i
V KW 200147 i