20001530 Ver 1_Site Plan_20020201 (3)

S-84-2000
INDEX OF SHEETS
OVERALL STORM WATER MANAGEMENT POND PLAN SHT 1
SITE
DITENDED DRY DETENTION POND LOT 1 SHT 2
EXTENDED DRY DETENTION POND LOT 2 SHT 3
-N- LEVEL SPREADER LOT 6 & LOT 8 SHT 4
IXTENDED DETENTION WETLAND POND 1 LOT 7 SHT 5
1
STORM WATER MA NA 4 ~MENT PONDS ENDED DETENTION WEMND POND 2 LOT 7 SHT 6 EXTENDED DE1EN710N WETLAND POND 3 LOT 7 SHT 7

EXTENDED DETENTION WETL4ND POND 4 LOT 7 SHT 8
RALEIGH, N. VICINITY MAP ~ - N. C¦ EXTENDED DETEN710N WERAND POND 5 LOT 7 SHT 9
EXTENDED DRY DETENTION POND LOT 8 SHT 10
DRY DETENTION AND GRASS SWALES LOT 6 SHT 11
EXTENDED DETENTION WETL4ND POND LOT 9 SHT 12
EXTENDED DETENTION WETLAND POND 1 LOT 10 SHT 13
EXTENDED DETENTION WETLAND POND 2 LOT f0 SHT 14
SCA(.E~ 111 T.S LOT 14
EXTENDED DEfEN110N WETLAND POND 3 LOT 10 SHT 15
_s~n.
I PENSION 70 DWO PONDS R LE1iL SPRENERS 5/20/02 JAC
LOT 11 - f--LOT 13 2 RENSION PER DM17 2nd CONIAENTS 6/06/02 JAC
~ ' nor ~z
w oarnMC~ws
~ oasa~u~wa~ aa~roR ioae~c'°"~r °"e°°" a "°e' LOT f 0 LOT 8
MD StNlR RS MIOIm N M~ 1~M4 t 1!!OIlE Wt~ AE
PU91C UIIIIFS ~PARII~p N16~ ~
~~p~g,~g quoit m wn a nae gran LOT 1 ~
r~ur m wm eom an oerwrnwrs w ~w~c't a em~a
wi ~rxv N nc szwa a ~o+covn mss, Iwo ~~aeiet r~axss wr rescue
~
nvuar ro au we non ~ao~u. ~ w aunt xa~ LOT 7
neArr~ vi ws on nr sae s'~ oe ,vn oneR ~.una~ or an of ~ .o LOT 2 LOT 2
srMOV~as Mu. ~sur w ~ ~E1tl2e~E.EiA"JJd~lI ~w nnur waec xneana
LOT 9 ~
~10
P
LOT 6
LOT 5 ~ i~~
/ Jy.
,~i
,~~j
LOT 4 LOT 3
i ;
%i
LEGEND
/i
DESCRIPTION EXISTING PROPOSED EBENQER CHURCH R~1D (SR 1647)
2' CONTOUR INTERVAL -
10' CONTOUR INTERVAL
~ PROPERTY LINE - - - - - - - -
~ ROADWAY CENTERLINE - -
s RicHr of war uMirs - - - - - - - - PREPARED BY'
eY OWNER
g EASEMENT LINE
CURB & GUTTER
SANITARY SEWER FACILITIES
o STORM SEWER FACILITIES =-Q-= Q~~°O W I T H E R S R = WATERLINE - ~ - N RAV E N E L HIGHWAY 70, L.L.C.
3209 6RESHAM LAKE ROAD
o FlRE HYDRANT ASSEMBLY ~~<i~ ENGINEERS I PLANNERS I S S I SURVEYORS SUITE 158-160
a FENCING STRUCTURE -o-o- 111 MacKenan Drive rive RALEIGH, NORTH CAROLINA 27615
WOODSLINE rY Y Y Y Y +~/h G/ J1 I
3 tel: [phone] fax: 919-467- F NA 919-467-6008
WATERWAYS r www.with ersravenel. com Isom
Q SILT FENCING M -X
6
0
a o
0
U

~ ~ \ ~ ~
NOTE:
THE OPERATION AND MAINTENANCE
I I I I I I I I I I I I I I I AGREEMENT EXECUTED BY THE OWNER SHAH BE CONSYDETZED PART OF THE STORM WATER
MANAGEMENT PLAN. ALL DEYICE5 HAVE
BEEN DESIGNED TO REMOVE 85X IOTAI
SUSPENDED SOURS (TSS) IN ACCORDANCE
u_ ~..1_. ~ J~l_ . f1. i:].~ ,a 1.. i.l._., i i . I::L I I,. i " ~ ~1~1.. 1~1 WITH THE MOST RECENT VEliSION OF NCDENR
I ~I I I I( r j 'I STORMWAIER BEST MANAGEMENT PRACACE
a.. ~ MANUAL
401 WATER QUALITY CERTIFICATION AND
ADDIfl0P1Al CONtNTiONS AND NEUSE RIVER
BUFFER RULES, SEE DWQ PRO~CT X001330
~._M,...~.~ ~ ~ ~ ~ ~ ~ " i , ' "d" do X001530
["y I I I r ~ I I I} I~ ~
~ C ~ ~ a 1.....,~ ~ '.,....I ~ t:" , ~ E.r I r. NOTES
___1 rr 1r° rr r.~ t~ ;i I I ~ ~ _ 1, 1HE EXTENDED DRY DETENTION POND, LOT i W~.L
8E USED AS A TEMPORARY S10RM WATER MANAGEMENT
J ~ i c I I I a I ' r I f 11 I - DEVICE UNlll SUCH TIME THAT LOT 1 IS DE'1+EI.OPED. I
~ ~ , sI ONCE LOT i IS DE1~EL0PE0, THE POND 1511D ~
.~_f ; RETROFITED TO AN EXTENDED WETLAND DETENTION POND.
t, FlNAL DESTGN PLANS FOR THE WETLAND POND 5HAll BE SUBMITTED TO DWq.
1 I _ Z DESIGN PLANS FOR 1HE PO(XIET WE?LAND PROPOSED
:~4 aF U ON LOT 4 SHALL BE PROVIDED TO DW'Q WHEN THE lOT
le a. I I, I . IS ~VET.OPED.
~ I 3, ANY CHANGES Tb 1HE S10RM WATER MANAGEMENT PLAN
~.~T . . , SHAH 8E SUBMITTED 1D DWq.
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y, 11~. F.' ~ i ~ , ~ _f ~ r. y,
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1 y'~ b~ l~i• r SEE NOTE 1.
~
~
,
~ _ ...E ACAWT
. rr ~ _ ~ ~ ~
l t i;; ' ~~1 I
s ~ I ~ t - ~_r 4> j ~ ~ l 4 y ~
. ,r ~ ' 1 ~ tl _ u f ~ 1-r " ~ ~ ~IC~. ~ - ,,,p ~ ~„a.- ~ ~
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r a ~ ' I~AC` / /
1 ~r.~- ~ ~ U' ~ ~ °C 1. " " ~ , ~
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1 _ _ t ~ ~~s- 1 - ~ ~ a
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n 1 ~ /
- - 1 i ; ham, m + / ,.~.,-.w___--
- i r n\ y ~ , `n f f'" '1t~~ Sri I J `'+"'K' ~ ! ~ / ~ . ~ ~ ~ ~
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/ / /
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w m,.m sra_1 1 ~ 1' ~ ; r~ , ' /
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f "I I / / / ^i / /
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/ ~ ~ I~ ~ i~ ..J..- fir, ; % /
g l . ~ ~ / /
' ~1~1!., '1.., i ,gyp `..,,~l~r ~ ,7+'~ / / / /
~ ~ , ~ / / / / /
_ ~ / / / LEGEND
.ens ~ _ ~ Y i ~ ~ / / /
r _ / / 4 1 , DRANVAGE BASIN
/ / ~ DELU~EanaN
" ~ . ~ / / _ ~
~ ~ ~ V / ~ ~ /
/ ~ /
~ ~ " -r ~ O I 1~ ~ ~ 1 ~ 1 I ~ 1 _ J.
~ " I" i I V l I ~ " ~ I ~ I I I I ~ 1 1 I ~ ~ '
N " i ~ i i ~ " ~ _ _ _ - - ~ ~ i i ~ ~ ~N ~ / / / ~ / p~
' " r , i r ACANT " i / / / ~
~ ~ ~ i i ~ i , - , , ~ "VA NT a , ~ , ~ - , / / i ~ / / SEAL
~ _ ~ ~ / /
~ / / / f ~ 164233 / /
~ r ~ ~ " ~iiN'I~'
0 J ~ i I ' / / ,~y / / JAY J~
. ' / / - , Zr _ _ ~ 0
O. 1~ ~ ~ / / _ / / a ~s ,so aoo soo _ / /
SEE NOTE Z. - . / /
y _ ____..Y----r- z - __w.. _ / /
~ - R 1 ; - - ~~uaru a~AD 5 / /
/ / / 1 inch ~ 150 ft~

0
F
C) Np, Date B Designer Scale Sheet No.
° W&R 1 150' C) i REVISION TO DWQ PONDS & LEVEL SPREADERS 5/20/02 JAC _ CORNERSTONE PARK WITHERS R"ENEL L STORM WATER MANAGEMENT POND PIAN ENGINEERS I PLANNERS I SURVEYORS
v 2 REwSION PER DWQ 2nd COMMENTS 6/06/02 JAC Drawn By Date OVERALL STO
d JAC 11/28/91 0 y job No. Ell 111 MocKenon Drive Cory, North Coroilno 27511 tel: [phone] fox: 919-467-6008 www,withersrovenel.com
a Checked BINAIXIGH, NORTH CAROUNA
JJJ 200147 U

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Op O O p/lo 0 0 0 4p p
a o ~ao0a~0 p
0 4 ° 0 Da Ora ao 0~ 0 ° \X ' M 1
0 0. ~D o epo o O~O o.Q o oopap a~oo° ~ ~
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0400° pOe'.. ° \ 000 0 op e0 ° \
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e. o
oo j • O e e • i
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e
c e o 0 • • • o oe 0 o A O' •
'MIN ~ ~ ~ ~ 10 •O• o e e o O e e
°0 o ~ e • o,. 00o a e
j SILT ~ ~ \ _ e eqe / /
FENCE ~ 1 ~ .r.------, 'f i 09
e O n
~ \ _ _ - ~ -
_ _ ,~t3~- 50' N
_ _
VIEW N~, D -PLAN ED DRY DE~f ND
w„_.
i =20 .~,J,,,.--
i+
\
I

TOP OF =401,0 rt _ _ _ - RIP-RAP
o ° o° ° 0 o Q
0 0 0 oQ~ o °Q ° O p__._.. ° ~ 0 _ 7 WASHED
CREST OF WAY =39 . ° _1 IIV.-
- o p c ° o 0 0
- ° o o p ~o ° o A. _._-w_~____ - ° o _
a p 0 Oa ° ° 0 •
a O p ° a O° 0 ° 0 n' ° O O O° EXISI~IG GRADE _ - NOTE;
_ - o p a O o 0 o p 0 ~Q e ° o THE CONTRACTOR SHAM SEED AND MULCH ALL AREAS EXCEPT ~V AREAS WHERE PLANT' r~41TERG~I. IS
c _ ~ oUOo 00o quo oO oO ° o p PLA(~0 AFTER CONS1TtUCTiOW IS COMPLETE SILT FENCE
m - • o ° o - - SHOLhD RQIUIN IN PIACE UNM GRASS HAS INCOME
_ . o ESTABL~HED.

_ _
`O ~ C 4D ~0 rh ~ ry
N N R A
Summary Information
10+40 10+60 14+80 1 10+DD 10+1D I Cornerstone Park
Extended D Detention Pond - Trect 1
Storm Qpeak Qpeak Max. Max. F uen In Out WSEL Pond Storage
re4 cY cfs cfs ft. ac.ft.
WAY -PROFILE VIEW SPILL 2 20.98 20.98 438.30 1.075
1=10' HORIZ 10 26.30 26.30 438.45 1,075
i "=5' VERt 104 35.41 35.41 438.70 1.075
a
.r r Elevations
Basin Boltom Elevation 392 ft.
N Crest Elevation 398 ft.
O Top of Dam Elevation 401 ft.
NOTE:
0 Areas
i. REPLACE 5 OR 57 STONE AS NEEI ENE AS NEEDED TO ENSURE WATER permanent Pool Surface Area o sq.ft.
WILL DRAW-DOWN FROM POND. RED POND. REMOVE SILT FROM POND Drainage Area 4.85 ac. C 3.36 ac, ~ Im rvious Area
~ EDES 25~ OF POND D~ WHEN IT EXCE 0 OF POND DEPTH ~ ~ ass
J i Z SEAL
~ 2 THIS POND SHALL SERVE AS A TEMP ' AS A TEMPORARY SEDIMENT BASIN other Paremeters
m H TIME THAI LOT 1 IS 0E1 UNTIL SUC .OT 1 IS OEVELOPEO AND IS Design Rainfall 1 in. runoff
RETROFITED TO A PERMANENT WET D~ Drewdovm Device Rock Fifer v ~,,.e~. DETENTION POND, 1116""" NENT WET 4s hrs. E` Min. Drewdown Time Reqd. ~R
Y Min. Detenton Volume Req d. 0.27 ac.ft. dAY
Q Detention Volume Provided 1.075 ac.ft. ,L~--~-
Z a S Zz o2-

a
o
Sheet No,
0 ' Date B Designer Scale WITHERS R"ENEL rENDED DRY DETENTION POND LOT I ENGINEERS I PLANNERS I SURVEYORS
°a N 0. W&R AS NOTED i REVISION TO DNS PONDS LEVEL SPREADERS 5/20/02 JAC
~ Drawn By Date CORNERSTONE PARK
o JAC 11/28/01 ° Checked By Job No. RALEIGH, NORTH CAROLINA 111 t~tacKenan Drive Cary, North Carolina 27511 tel; 919-469-3340 fox; 919-467-6008 www,wlthersroven! 0m
FE JJJ 200147
U

~ -
~ , _ ~
_ _ . _ j, _
- , - ~
Summa Summary Information
~ i' ~ _ _
Comer _ ~ Extend Cornerstone Park
204 r , ~ ~ Sta Extended D Detention Pond -Lot 2 Storm Q eak Qpeak Max. Max.
m P
1 ~.w I Fre t - Fre uenc In Out WSEL Pond Storage q Y
_ . r. cfs cfs ft. ac.ft.
2 12.51 9.78 438.40 0.512 vENr
~ ~ 1 f _ 10 21.38 17.52 438.59 0.548 SCREENACCESSIBLE THROUGH
~ V , F 1( 100 30.09 19.34 439.22 0.674 DOOR
~ _ /r - - - ~ _
r - -1______~ NOTE:
` -J;_______ _ _ SKIMMER MAY VARY
eva 1c s Elevations SLIGHTLY FROM
IMPACr ~ ~ ~ _ - Basin Bottom Elevation 434.00 ft. ILLUSTRATION
,7~ LIN 0 ,~REA = 39 SF `tJJ. I vation 438.E ft. Crest E e
205 -y------ _ Top of Dam Elevation 440.00 ft.
° ~ ° b~- ~ i ~ ~a ~ ~ ~ FLOAT
° ° . ~ ~o°° ° / - ~ ° ° ° a Da ~ ~ I ~ _ Areas ~ _ . i Areas
~ _ ft Permanent Pool Surface Area 0 sq. .
- ~ ~ ~ ' _-~r Draina a Area 6.90 ac. OUTLET END; CONNECTION
r, ~ ~ ~ - , r ~ 9 Im rvious Area 4.48 ac. TO OUTLET PIPE OR RISER
1~ - .h - ~ ~ _ RISER Pe BARREL PIPE LONGER THAN SHOWN
- ~ ~ NOT INCLUDED WITH SKIMMER
__i ~ i 1 NVN 43350 \ / r-:._ SUPPLIED BY USER
. ~ , , ~ Other F % ther Parameters 0
- Design Rainfall 1 in. runoff FLEXIBLE JOINT
4 ~ 40 _ _ , - ~ _ - Drawdown Device Skimmer MANUFACTURED BY FAIRCLOTH
18' RGP 17 _ , _ 0 ~ Min. Drawdown Time Req'd. 48 hrs.
ASS l 0 ~ x z .14 _ ~ SKIMMER DETAIL Min. Detention Volume Req d. 0.365 ac.ft.
- i , _ ~ ~ , D,~~p N. T.S Detention Volume Provided 0.441 ac.ft.
///r// --_`l~_
////A7/ / 1'""
[
Lot 2 Extended Dry Detention Basin
~ ' f0 LX5'Wx6'~ COMMERCW. LOT FRL, . / / / , _ l Skimmer to Use: 3" Skimmer wl 2.5" head
WEl1AN0IMPACT' 18 FE'S - ll-- S1 4 Volume to be Drained = 15,682 cu. ft.
LINER WETtANT AREA ¦ 594 SF INV 43300 ` , / i i ° r^----..~.. Draw Down Time = 2 days
- / / / / TO STAI~ZE
CUSS I R6' RAP , ;g, ~'~PiREA!>ER Orifice Area = 6.16 sq. in.
DIS'~PA1gR PA0 RoADwar FlLL, ~ ~ ~ ~ ~ ~ ~ ~ MEIIANO IMPACT O Orifice Di~unet~ = 2.80 inches
12 Lx14'li~c24b ~ ~ ~ ~ ~ ~ .LINEAR WEIUWO AREA ¦ 333 SF ~ ~ ~ flL1ER FABRIC ~ ~ ~ ~ Q~
F UI+ER ~ ~ o P
~ 't ~ ~ G
QP
DRl' DETENTION PC~ID -PLAN VIEW
1
R _ . . 44
442
mP o~ a-44ao ~ 1DP OF Ei:~44Q0 ~0
440
- SEE FIAR -
438 -
- 48 r SEE DETA~ _ _ . _ _ _ _ _ _ - 1 -I ~ ~ ALONG- I~RREL ~ _ _
,~6 _ _ _ A n'"'
rs
01!~ E~11?R_~ ~~N~- 434 -
~IV - - - _ - _
432 _ CENTERtii , Cl1VTERLINE IM1~4335
- 4,10
430 ,
_ 2,500 pet _ _ _ _ _ _ _ _ - . _ _ . 428
- 428 6RABE-- - - ~ - ~ _ INV~429.0
NSSIPATOR P 2 -r--- - - - - _ Fll
426 - - --f _ _ 426 - - - - - - _ - - _ ,
- - - _ - _ - - . 424
424 _ - - - _ _ - _ - a.
N o h N • _ 422
~ ~ 422 _ -
G1~4S$11NED 5PREADER 420
420
f0+00 10+20 10+40 10+60 10+80
4 ~a ~q
NOTE: rweo rr+oo rr+a~ rrao rr+eo rr+eo r2+oo r~+ao
REL PROFILE VIEW 1, 18 RCP SHALL 8E TONGUE AND GROOVE W CO RISER f~AR
'O' RING GASKET MEETING ASTM C-443 L+4TEST AND 1-10 HORIZ SKIMMER i~1RREt -PROFILE VIEW
t =5' VERt JOINT OF ASTM-C-361 LATEST. I =10' HORIZ
1 "-5' VERT
A p A ~'4 REBAR 12"
° O.C. EACH WAY 0 0
Q. CDRRIM.ATED ' ' ~
PRESSURE RELIEF e o 0 o ME7AL OR 1%8 STEEL PLATE F. j ~ "I Cj HOLES 1/2' WA. PRESSURE RELIEF NOIES MAY N ~1E; 2' PVC fE1V~ILE AAIPIER (lYP 1" NVSERT FIr11NYIG NOTE.
T' BE OMITTED, f ERRS OF CORRUGA1pN5 ARE LEFT ~ COt11~RA PLAN VIEW WELDED (lYP) Fl!<LY OPEN MIEN ilE TOP LS ~ AREAS r ~ THE CI~VII'RACTOR Shall. ~ AID MULCH ALL QNIE 11 x2
URREL Arr. PIPE 1/2" PREFORMED JOINT ~ AREAS IN AREAS NITRE PLANT ~Nli'ERNL IS ~V fR011
IAYETfR FILLER, 12" WIDE ~ PLACED AFTER COHSIRUCTION IS C01PI.E]E SST FENCE 12 PVC COUPLING . SKR RET~IIN IN PUCE UNRL GRASS HAS ~G~ 11 PVC PPE
o cn>raER a Is DACE coRRUCArED MErAL FIVE ESTABIJSHED ESTABIJSHEDI
oR FABRMATED iRUM T/E' w o . STEEL PLATE. I
r'
TACKWELD ' (V ALL AROUND 1. THE CYLINDER MLST BE iNUp.Y
0 FASTENED l0 THE iDP Of "
J THE RISETL tN G r
Z 2• ~ AirA~EO 2000 PSF t,•IIN. ~ ~ earEO to TDP BEARING CAPACITY 2 PVC PPE
d ELEVATION SECTION ~ BENEATH COLLAR ' pVC plp CUMP n1'P) 9 E A l 2 E
a 3PACERZ9AR i t 1, x 1 1 4 ANd.E OR _ (Typl I I// STEEL PIPE. 2' fLDgBLE HOSE ~
N 6423
N q E` ~II ~P S~
p SECTION A-A CONNECTION DETAlL TO OUIlET PIPE Rr ~ v 2-- JAY J
ANTI-SEEP COLLAR ANTI-VORTEX DE1~CE ART OF SKMNER OEVICE ASSfM~

d NTS K
v
No. - R ' I Date B Designer Scale
6 1 REVISION TO DWO PONDS & LEVEL SPREADERS 5/20/0 JAC W&R AS NOTED I Sheet No,
6 2 REVISION PER DWO 2nd COMMENTS 6106102 JAC Drawn By Date CORNERSTONE PARK o JAC 6 01/01 1n A T EXTENDE C) Checked By Job No. ENGINEERS I PLANNERS I SURVEYORS
o 9 NORTH CAROLINA 111 MocKenon Drive Cary, North Carolina 27511 tel: [phone] fox: 919-467-6008 www.withersrovenel.com
JJJ 200147 U

1
1~ 1 1 1
I ; LEVEL .SPREAflE~ LOt 6 I Ex ! CB406 / 1 / 1 J I
t ~tp 1
I , / i 'I
t h 1 I
LEVEL SPREADER I ~ FES #7 J8 6 1
_ ~ i
l 429,5 ~ l i Qlo 9.51 CFS I , I ~ ~ „ _ i D DIA = 18 RCP 1 1
'~I
-o I %CJ m' I' ~ ~ ° I I ~ 1
2 2 ° I ~ LEVEL SPREADER SPECIFICATIONS 1
t ~ + ~ + 429.5 429,5 0 ~ ~ ,1 s~~
- I ~ - _ o LENGTH = 124 FEET i ~ o o ~ ~ ~ , _ , ,
DEf TH - 0.~ fEET ~ , _ / I - _T ~ ~o 0
r _ _ ~.1 Ca WIDTH ~ ENTRANCE - 10 FEET ~ o - GRAS TYPE =TALL FESCUE t 416,0 oOQo~oagOooa
~ i _ ~ UT i' ~ ~ ~ I
i , ~ ~ LINER -DOUBLE NET COCONUT E ~ ~ FIBER EROSION CONTROL BLANKET NKET
FES603 (NORTH AMERICAN GREEN 0350) 50 S0.
. f NR6 i ;i ~ ~i
RIP RAP
I PLUNGE POOL ~I
` ~ _ _ ,
o.
~ L EL SPREADER LOT 8 ~ -FES 7 ,ti ~
~m u ~~~1 =10
- YI606 i
i

.
i 1 r ~
FES 15C _ ~ ' i i
FES 03 # ~
= Qlo = 17,6 CFS Qlo - 5,39 CFS ~
DIA = 18" RCP DIA = 12 RCP J8~15B

LEUEL SPREADER SPECIFICATIONS LEVEL SPREADER SPECIFICATIONS - - ~ ~
_ - LENGTH = 229 FEET ~---r
LENGTH 70 FELT (13FT/CFS) DEPTH = 0:5 FEET DEPTH = 0.5 FEET
WIDTH ®ENTRANCE = 10 FEET WIDTH ~ ENTRANCE = 10 FEET I'
_ GRASS TYPE =TALL FESCUE GRASS TYPE -TALL FESCUE ~ ~
LINER =DOUBLE NET COCONUT LINER -DOUBLE NET COCONUT - ~ ` FES 15C . o ~ o i
- FIBER EROSION CONTROL BLANKET C~~ NTROL BLANKET ' ~ ' ~ • ~°~'»0°~' FIBER EROSION CO NORTH AMERICAN GREEN C350) ~ °p o a~;„ ~~00 0 ~o~~a o• ou
NORTH AMERICAN GREEN C350 ( Q~ ~ • Qo°~ ( ) ~ C}~~ _ o_~. -
_
,.r
RIP RAP
_ ; " PLUNGE POOL STAPLE PATTERN "E"
l i l'~, ' LEVEL SPREADER .
3.75 staples/yd^2 (4.5 _ _ _
staples/m^2) using 6 in ~ (15.2 cm), 11 ga. wire "U" 0 _ _
le s . 6 in 2 0.3 cm 9.0 f t _ sta ( ) ® P 1.22m ® ~ ~
sta les and lon er ma be (
used for loose soils. 9 a. sta les or heavier ma
g P Y be necessary in hard or
rock soils. Y _ ® ~ ER LOT 8 ®FES 15C LEVEL SPREAD
Secure blankets to soil
b lacin a sta le/stake _ 1.6ft P g P . t3 f trough each YELLOW colored dot. ~5 .50m 1=10 ~o N ~ R
( 1 Level S reader not to scale
P ( )
i
Vegetated ~ 'v" .,;;AMY ~--spy'" Trarroition ~ ~ MH,~11
diversion ~`op' ' • too e e
r1~yn ~M"}` .y y v~} •w von J 1
R
A
. 6 7 f t *..a ~ ~•"'ly,.r, ~ x yr, ~ slope _ FES 19
6 Stable ~ w . v,.. ~ r• ~ , r~ ( undisturbed ~4.i~,~ , ,,,,Iw ,~b, y .r„ > . RIP RAP o
outlet , N, . ,G•,i, u,.M~. ~ ~''~~y. 00°~ PLUNGE POOL ~ . oo •pU~ o p ~
~ ~ i// • 0 a0oo. I
t, tiu ~a,, t~, ~W »C ~ MATERIAL SPECIFICATIONS ~r, k°' ~i4, ,.i„. ~ p np~ o a - - i /i; oo,•p o,~o ;I o . 392 _
N~„ ~ i
~d d.• ~ al Mn Ali, ~u..l~ ~ . ,
turf reinforcement mat C TRM shall be a machine produced mat of 100% coconut ,,f M,1~~ w.. C350 The composite ( ) ~
fiber matrix incorporated into a permanent three dimensional netting structure.
The matrix shall be stitch bonded between a heavy duty UV stabilized bottom net with 0.50 x 0.50 inch CrOSSSeetion 0 SO'
er heav dut UV stabilized, dramatically cuspated (crimped) (1.27 x 1.27 cm) openings, a sup y y N~ ~ _
intermediate nettin with 0.50 x 0.50 inch (1.27 x 1.27 cm) openings, over lain with a heavy duty UV 9
U stabilized to net with 0.50 x 0:50 inch (1.27 x 1.27 cm) openings. The cuspated netting shall form Material variable---~ z p r2, I
t close) s aced rid es across the entire width of the mat. The three Wettings shall be stitched stapled in d prominen y p 9 r d to forma ermanent place 6" w_.,f LEVEL SPREADER
z together on 1.50 inch (3,81 cm) centers with UV stabilized polypropylene th ea p ~ } min 1 three dimensional structure.- 11-` _ 11~' ~I .~..-y-
_ r~~~_r 1=1111 Dili II I
-11C= 11=.11 s a roximatel 2 ~ : I111._...1 --1) All mats shall be manufactured with a colored thread stitched along both outer edge (pp y Level lip - _ ll~ ~1111~i111-11111=
uide for ad'acent mats. of spreader: ~I(II~'ll~~ (1=~„I„1,.= n overla i ~ 5 inches [5-12.7 cm] from the edge) as a p g 1 _ ~'~I = I -IIII~(II~~' I(1_ ~ ~I .
z II~~~l~ ~ r e uivalent. ~fhe Buried - ^If~llll~ w t shall be the North American Green C350, o q _ (I-~"~- . _ N,p 9
w the composite turf reinforcement ma 6• min
~ C350 ermanent com osite turf reinforcement mat shall have the following physical properties; o P P
w TRUc ~ , ial Content LEVEL SPREADER CONS TIONSPECIFICATIONS: w Mater ~VEt `SPR ER LOT 8 ®FES 19
Z 1. THE MATTING SHOULD BE A MINIMUM OF 4 FEET WIDE EXTENDING 61NCHES OVER ~ =10
~ Fiber 0.50 I b d3 0.27 k m 3]) THE LIP AND BURIED 6 INCHES DEEP IN A VERTICAL TRENCH ON THE LOWER EDGE. Matrix 100% Coconut ( /Y ~ 9/ THE UPPER EDGE SHOULD BUTT AGAINST SMOOTHLY CUT SOD AND BE SECURELY
m To -Heav UV Stabilized Pol ropylene HELD INPIACEWITHCLOSELYSPACEDHEAVYOUTYWIRESTAPLESATLEASTI2
~ Nettmgs P Y INCHES LONG. w B.50 Ibs/1,000 ft2 (4.15 kg 100 m2) FES 19 '
= 2. ENSURE THAT THE SPREADER LIP IS LEVEL FOR UNIFORM SPREADING OF STORM t Mid -Super heavy UV Stabilized Polypropylene ~ RUNOFF. F
20 Ib/1,000 ft2 (10.21 kg/100 m2} 3. CONSTRUCT THE LEVEL SPREADER ONUNDISTURgEDS41l(NOT ILL) C10 = 10,1 CFS ~rruu•ar••
~d Bottom-Heav UV Stabilized Polypropylene 4. CONSTRUCTA20FOOTTRANSITIONSECTIONFROMTHEDNt.RSIONCHANNELTO Q Y BLEND SMOOTHLY TO THE WIDTH AND DEPTH OF THE SPREADER. UTA 15' RCP ""3su~~rro~~~ ~~t7 •tia
N 8.50 Ibs/1,000 ft2 (4.15 kg/100 m2) 5. DISPERSE RUNOFF FROM THE SPREADER ACROSS A PROPERLY STABILIZED
SLOPE NOT TO EXCEED 10%. MAKE SURE THE SLOPE IS SUFFIGENTLY SMOOTH 0
Thread UV Stabilized Polypropylene TO KEEP FLOW FROM CONCENTRATING. 0 6. IMMEDIATELY AFTER LEVEL SPREADER CONSTRUOTION, APPROPRIATELY SEED ? • O ~ f LEVEL SPREADER SPECIFICATIONS ; ~ _ SEAL ~ •
R AND MULCH THE ENURE DISTURBED AREA OF THE SPREADER. ~ Physical Specifications (per roll) LENGTH = 131 FEET w ~ ~ 15423 t
0 1849$ • ~ F DE(1H = 0.5 FEET > ~ . s F~• NGINE~'
English Metric WIDTH 0 ENTRANCE = 10 FEET ~y GI ryE a~ RY E~ ~Y • a ~r SAY ~
~ ft 2.00 m 9 Width 6.50 GRASS >•YPE =TALL FESCUE ,,,,FT •pua ae y , :o
Length 55,50 ft 16,90 m w Weight 37:00 Ibs+ 10~ 16.80 kg fJNER =DOUBLE NET COCONUT a@„~1e, ~
FIBER EROSION CONTROL BLANKET ~
ru Area 40.00 yd2 33.40 m2 (NORTH AMERICAN GREEN C350) 4 U ei~/~~
o - - -
Sheet No.
No. Revision Date B Designer Scale i WITHERS RAVENEL
1 REVISION TO DWQ PONDS & LEVEL SPREADERS 5120102 JAC W&R AS NOTED CORNERSTONE PARK p - Drawn By Date K 2 g6'j(' u ~w0i Z~1r>~~o,eca 7az Tac
a JAC 11/28/01 LEVEL°o Checked By Job No. RALEIGH, NORTH CAROLINA ZVEL SPREADERS LOT 6 LOT 8 ENGINEERS I PLANNERS I SURVEYORS
o _ 111 MacKenan Drive Cary, North Carolina 27511 tel: [phone] fax: [phone] www.withersravenel.com
r JJJ 200147 - - -
0 0 0
Y

~ ~ - - 1. - - ~
~ .
I \ . ~6 ~AGiTTAf~fAlAi~IF(~LVf~~~ ~ `
~ ~ ~ / , l , 48 PELTANDBA-di GINIGA.
. \ r~ 6~-ZtZANIA AQUATICA _
\ ~ ~19,~~IRPU~~UNGf~"
_h ~ EX 2~0' CITY Qt RAl ~IGI} ` /
. , _ sAN1TA~'Y stwLR ~A~L '
. 1 ~ ~ 2000 PG -2230 ' , , ~ ~ ~ 26 NYMEN. CALL15 CAR INIANA , ~ / / / /
~ ~ E 9 9AURURUS EP~UUy , t , , , , / / / A5 5 RURUS CERNUUS\ , , { a , t / , ~ / i
. JUNCUS I L~RU~ .r { a { + t { / i° / / T' F 2~ CANNA FIACCIDA ! 4 9GIRPUS h~N ~NS~
~ ~ / i -'51 14t+,~t€~~tR6fldlf~ _ i 'i'+ia+{{r +a~~~{+tt+{+{ / / tl/ / - t r a- t a. t + ~~cu5 BIFLaRUS
- ~ LASS : RIP-RAP ~ ~ / ~ ~ +~aa+t{ti// i ~ ~ t r . „1 , 64 5AGI1T ARIA LAl ffOLIA _ { ~ / 48~AGI L ~.+ttt.+{a
~ A L?ISSIPATOR PAD ; ~ ~ . ~ ` ~ ~ ~ i , ata~r{t~+{t ' 1.. ~ f 3 pONTEDE,RIA Cf)f~ATA ~ ' ~
- _ . , ~ ~ ~ ~ ~ ~ ~ ~ ~ 'l ~ USE fILTE`R`F ~ 1 i 75 7.IZRNIA AQUATICA ~ l /
t 1 i " ~ ~ ~ ~ - E - - ~ ~ i ~ ~ ~ j ~ - f . I I . _ ~ W W _ /
A ~ ~ , W.-W ~~WI I_. i ~ 391&l~ VIRGIN - - _ -1_ , W W W W W / l._ ,
~ p r ~ ~ . ~ ~ ~ ~ x EXMH~O ~ \ ~ ~ ~ I
30 9AURURU E~KNUU~_- Z - 1 ~ W W W I_
~ ~ A ~ ~ CANNA FIACCl6A L ~ ~ ' I I t ~ W W W 1 I I
- 1... ~ I - _ , W W W W / ° 33 NYMPNAEAODORaT~~ ~L / / / I ~ ~ L / . i _ _ ~ / l ~ / / / / ~ ~ W W W I. :
~ ~ _ / / _ I-.. r _ L % ~ W W W 1_.. l l
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I ~ p _ _ r + . ~ " , ~ ~ ~ . ~ ~ ~ , a tt. tta > / ~L L. L L ~ rI i h M t tr t h ,t+~++,tt, i/ ~i//
~ ~ , ~ , ~ ~ 24 FES _ ~ ~ , . A \ t i++ t r+ t{ r ...4' ~ E E ~ W W W W W W W r r t t { f E__... L . { t f ,
' ! INV... 415,85 _ _ ~ ~ . w....{. w t/// E~ E E E F F F E W W W W W I J ~
~ ~ ~ s+{ r. L"~-.~W. W W W W W ~ ~ - ~ I ~ i i r r { + I I I
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\ ~ ~ o ~ p~ ~ i I ~ W W W W I._
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RAex j ~ r.~ A ~ ~~,X ~ : ' Ff~S ~ ~
C~ NRB ~ ~ y ~ ' 1 ~ / ~ ~ ' ~ ~ ` ' : i i / / ~ / / / / / / / ~ ' 140~PONTEDC~IA ATA.:
~ ~ ~ ~ , . { y \ . ~ , ~ LX 7~ ~11Y ~(~I I~AI ~1(~ll ~
~ . ~ANI7ARY .LW K kASEMF - ~ \ i ' S f NT ~ ~ _ ~ ~
~ ~ _ -?000 P~~ ,~~,5~1 =22.39 ~ ~ A ~ ~ ' ~ ~ ~ r .,,65 >R~ VIR CA ~
~ .x. ; _ > s3'CANNA FtACCIDA
~ _ ~ y,. - _ , ` _ \ S`3 ~0~11`C~ERIA E9RDA ~ ~ _ ~ ~ ~ ~ . , ~ ~ ' ~ _ : _ , _ _ ~ ~ 78'~AGITf ARIA lAT A I 37~AURURUSCERNUU~
~ , . ~ J
~~~~ELrANDRA 1TIRf INI ~ ~ E~'iuFl66. AUINGINI _ - ~ - ~ 6?~NY~IPII~=A~}DORATA
` _ o , _ ~7 SAGITTARIA LATIFOLIA
_n,..,_. _ _ , - ~ _ , _ _ 64 fR1S VIRGINICA . -
XMH6~ ` ~ _ b - _ ~ - _ 1--~ PLA~ TIN -PLAN
. _ ~ _ ~ _ _ _ .
. w ~ r. % u r ~ _ I
_ .
~ _ r, .
W D POND_ 1 - LAN '~1EW EXT LADED DETENTID ETUiN _ P /
_ » ~ ~ _ ~ SN
. ~ ~ ~1.- ~ MAR ~ , I ~ . ° _ IAN
/ -
~ ~ NOTE: /
428 i THE CONTRACTOR SHALL SEED AND ~ i
j i _ ~ r MULCH ALL BARE AREAS (EXCEPT IN AREAS " r.
426 NOTE: ~ 2 WHERE PLANT' MATERIAL IS PLACED) AFTER ' ' } _ _
_-___.PLAC Sl'EM_____ - CONSTRUCTION IS COMPLETE. SILT FENCE ` - __-t-___-- -__.-T___- . i--_.. ANT VORTEX DEVIC SEE DETAIL) ' L GRASS SUPP RTS AT 3 ~ SHOULD REMNN IN PLACE UNiI MICRO POOL 1.
424 ~ i ~ GRASS HAS BECOME ESTABLISHED. ' FROM BASE 5'MIN OPERATIN WNEF.L ~ - 106 SF ~ . _ , _ ~ ;
~ _ _ _ WSEL , SKIMMER EVICE ` i ~ I ~ ~ / % j
CHART _ ~ TPOFDAMEL--22,0- SE-..~.. _ ,,,Y lJ 422 ~ _ (CONNECT T RISER - CRES EL 42J,i'i_
1 2 1 TO ELE1~~ 4 .DO) f I,°' r' i I
_ _ _ _ _ _ _ - ~l~ - 420 - - -PRO OSED GRADE ANTI SEEP OLLAR~ 1 _ _ 4 z " TES ELEVATION _42' _0 1 f ,
ALONC BARRE CENTERLINE (SEED " DI 4 I i~ ~ , - s
418 - ~ BO OAl OF -BASIN 18;50 I _ ; ;
_ ,T6 ..PRECAST ORCED j _ tNV=4t5 85 ~ _ CON RETE MANHOLE RISER ' IN 41 ( ) ~ HIGH MARSH ~ 1,316 SF
a _ 416 d I 4" 90' HB ,
,a``~' - I--- GLASS-~ T?RAR--.~-- . I ~ I
LF 24"0 RC C(ASS_>>T_6-.~ AN LEAST-- DISSIPAIOR P 7~ ~T~CK 28 ~ ~ 12'" MITO CONE FOOTING I ~ ~ ~ A 414 _ 4 NRS G TE VALVE _ i i I I
U. E FILTER FABR UNDERLINER i CONGRE E FOOTMIG LOW MAR5H
- - - - ~ ~ ~ (6'L x 'W x 18'D~ 412 ~ USE 2,500 sl CONCRETE ~ ~ ~ ~ , , LOW MARSH
P I ~ , ~ 1,945 SF
I ~ 410
0 0
N Pj M ~ ~ ~ ~ ~ N N N N ~ ~ ~ ~ ~ \ ~ ~ ~ eh '0' eF V d' h VN' ~ ,d. d' d. d' \ ~ . HIGH MARSH FORE 8AY
706 SF _
~ = ~V \ ~
10+00 10+20 10+40 ~ PLANTI - EAR ~kLAN VI
OTE: - N ,
U " ~ ~ ~ -PROFILE VIEW i. 24 d RCP SHALL BE TONGUE AND GROOVE W/CONFINED 0 RING GASKET RISER BARREL =1:~ _ _ _ R:-
Z " ~ MEETING ASTM C-443 LATEST AND JOINT OF ASTM-C-361 LATEST.
1 =10 HORlZ " W ' 2. KEEP 4 GATE VALVE CLOSED UNLESS THE NEED TO COMPLETELY DRAIN summary infomra6on
1 -5 VERT ~ Y F R MAINTENANCE PURPOSES. Cornerstone Park THE POND IS NECESSAR O Extended Wetland Detention Pond 1-Lot 7
uJ ar Storm Qpeak Qpeak Max. Max. _ PLANT LIST Max. _ _ _ _ _
~ Frequency In Out WSEL Pond Storage d Storage QUA SPECIES _ _ Common Name S acin
ac.ft.
W A o o A - - - - - _ _ . _ Z 2 5.82 0.05 421.48 0.101 o-'o' - 35 Canna flaccida Golden Canna 3' o. .
z REBAR 12" 10 7.50 4.42 421.81 0.106 W - ,1f4 100 9.13 9.08 422.00 0.119 o.~os c 0.119 87 HymenoCallis Caroliniana Spider Lily 18" o.c.
~ O.C. EACH WAY W n 168 Iris virginica Blue Flag Iris 18" o.c.
WZ PRESSURE RELIEF o ~ ~ VENT 73 Juncus biflorlls Shore Rush 2' o.c.
- o 0 o Elevations i SCREEN ACCESSIBLE THROUGH
~ PLAN VIEW o o rOP IS IO GGE CORRUGTED Basin Botton Elevation 418.50 ft. , . - ~ METAL OR 1/8' STEEL PurE. '<< N Permanent Pool Elevation 420.00 ft. D00R 95 Nymphaea odorata Fragrant Water Lily 3' o.c.
W PRESSURE RELIEF HOLES ANY T BE OMITTED, IF ENDS of ~ Crest Elevation 421.58 ft. NOTE: Y 141 Peltandra vir inica Arrow Arum " . SKIMMER MAY VAR g 1$ o c.
~ coRRUCanoNS ARE LEFT BARREL Top of Dam Elevation 422.00 ft. ~ WELDED (TYP) FULLY OPEN WHEN THE TOP IS PIPE - SLIGHTLY FROM "
AiTACHED. I~~„ PREFORMED JOINT "`l DIAMETER f1LLER, 1L" WIDE Areas ILLUSTRAT?oN 249 Pontederla Cordata Pickerel Weed 18 o.c.
293 Sagittaria latifolia Broadleaf Arrowhead 18" o.c.
R Is Iz GDE Permanent P001 Surface Area 4702 Sq.ft. CYllNDE o CORRUDATED ME7A1 PIPE ~ ~ o Drainage Area 3.52 ac. FLOAT 141 Saururus Cemuus Lizard's Tail 2' o.c.
- so' OR FABRIGffD FROM I/8' ti'`...,, i Impervious Area 2.55 ac. stEE~ PurE. , . N 33 Scirpus pungens Three-Square Bulrush 18" o.c.
p IACKWELD - OU OUTLET END; CONNECTION 139 Zizania aquatica Wild Rice 18" o.c.
N ALL aROUND - _ _ ~ - Other Paramehers To M I A" NOTES: N - I. THE CYLINDER MUST BE fN7MLY Design Rainfall 1 in. runoff TO OUTLET PIPE OR RISER BARREL PIPE LONGER THAN SHOWN inotf - _ _ -
~ FASTENED 10 THE rOP OF ~ ~ rHE RISER. 2000 PSF MIN. Drawdown Device Skimmer - NOT INCLUDED WITH SKIMMER SUPPLIED BYUSER
2. SUPPORT OARS ARE ATfACNED Min. Drawdown Time Req'd. 48 hrs. ~ 3s°- eY srwws BOLTED ro roP SECTION BEARING CAPACITY y4glu8"r~S9
DF RISER. ELEVATION E3ENF.ATN COLfAR Min. Detention Volume Req'd. 0.208 ac.ft. tr ~tl9 0 It '7 r~ , ~r"a, FLEXIBLE J(NNT ~„si ~ ~-i~~,~ ~~m. t ~ ~ ,
(ls X rz° sUPPDRr BAR srzE Detention Volume Provided 0207 ac.ft, ~ dPACER BAR ~8 REBAR _ . SKIMMER DETAIL i" a
~ ("~I Lot 7 Extended Wetlands • Pond 1 N.rs -
Skimmer to Use: T 8klmmer wl 2" head m Vdume to be Drained = 9,004 cu. ft I ~,i_,°. a ~ ~ i7 ~ 1'~> ~ A
~ SECTION_ A-A__ _ Draw Down Time = 2 days ,~'v ~ ~ ~ ~ ~ ,
I i`- e..ry n nr ANTI SEEP COLLAR
Co n _ Orifice Area = 3.53 sq. in. AN11 VUKItX UtVIGt rr ~ a~ y
a NT$ inches r reeje ~ , ~Z (4~' feerrur~
o NTS _---_Odfice-nlarnetem 212------
No. Revision Date B Designer Scale
1 REVISION TO DWQ PONDS & LEVEL SPREADERS 5120102 JAC W&R AS NOTED °o _ Drawn By Date CORNERSTONE PARK WITHERS RAVENE Sheet No.
D DETENTION WETLAND POND I LOT 7 ENGINEERS I PLANNERS I SURVEYORS
a JAC 11/28/01 EXTENDED DE o - Checked By Job No. RALEIGH, NORTH CAROLINA o - - - KLJ 200147 111 MacKenan Drive Cary, North Carolina 27511 tel: [phone] fax: [phone] www.withersravenel.com

- - - .
~ > ~ , ~
S u- , -
~ O 4 , ~ \ ,
I
t ~ ~ , , . f~~~
EXNH65 ~ ~ , , l ~
w
- . s ~s
; ~ CLASS 9 RIP RAF' `111SSiPATOR PADS. \ b - .r _ _ `
~ ` ~ iBLx8Wx9 D ~ ~ r„vx< y
~ ~ U$E FILTER: FABRIC::. , _ / / n;
~ ~ z UND RUN R ' , E E ~ ~ c~ ° ~~a:; ~
d - , _ 3.~
~ _ 1 p Q ° ~ ~ ~ ~ _ ~ . 3 CU5 BIFEORUS - ~ ~ -
clrr o1 ~A~I_~ e: 12 S , ~ ~ ~~1,i . F ~.~vIR EASE MENI ~ ~ V , 0 ~ ~ _ p 3,CANNA FLACCIDA ~ ~ ~ ~
~ ~ ~11r 8 ,'1:~g ~ ~ 1N 420 , ~ l ~ ~ , . o 2811YMYTJOCALLIS C OLINIANA " ' ' r~ _ ,
.tip ~ ~ ~ ~ • ~ ~ ~ ~ . ~ , I ~ IZAN AQUATICA - -
4 r \ , , M ~ r V ` 15AU URUS CERNUUS ~ ~2& POSITED IA CORD~A 6 R
~ / / ~ ~ , 5 CANNA P GIdA 8 SAGITTARIA LATIFOIIA ~
i \ ~ ~ , "a~ ~ 4fi LF 12 RCP, ~ h~ `
~ ~ `r i i F r ' ~ ~ CIiR NI ~ 5:66q ~ ~ I a ~ , ~ ' 22 SCIRPUS PUNGENS ~ >3 \ ` ~ ~
\ ~ ~ v ~ ' / +415.0 , f'', ~ r ~ ° \ ~ ~ ~ , / ' `V ~ ~ ~ ,l
o , I ~ . 36 PANICUM VIRGATUM ' ~ """T ~ \ \ \ \ ~ ~ t 1... ~ \ ~1.. ~ \ ~ ,
~ ~ `~a:~ +415. ~ \ MIRICA CERIFERA ~ ~ 1 _ ' ' „ , i i ~ ~ . ~ , ,
, ~ ~ ~ ~ ; d ~ ~ ~ ~ ~.r...,-- . `s~, ~ .,A , ~ .l ~ ii . . ; t~.t. . ~ ~
\ ~ ~ ~ ~ ~ ~ A - ro, i .~.r.,. / i
' \ n , ~ .`SK~ ~ ra, ~ ~ ~ ~ ~ 24 "0 CON ETE. y y
/ i ~ ~ <.A f - N W W 'Y W ~Y t ~
! " 0' , I R ~ I ~ ~ " J~ ~ ' •,,``1~ISER W f TRASH 2 S 0 ~ A ~ ~ ` - U ~ r y W s,..~,..n W W ~ ~ 1
• IJRAINAGL EASEiV N, ~ x~ c I { ~~RACK ~ _ ~ l • ; , ~ ~ b`~ w ~ , ~ i - ~ ~ ~ I ~ I y W ~ ~
W y ~ ~
~ i ~ ~
~ 1 - . ~ ~
S J ~ ~ t 1 L ~ 1 ~ 1..
. , ~ ~ i ~ , s , ~ • ,
EXMN63 ' ~ FRB ~ , \ ~ 18 SAGlTTARIA LATIFOLIA
/ ~ ~ ~ ~ ~ ' ` 17 NYPr'iPI1AEA ODORATA
s ~ ~ ~ _ ~ ~ A ~ A V ~ ~ - 23 PONTi:DERIA CORDATA _ _ _ _ 17 SAGITIARIA LAl IFOLIA'''
~ qti/~ ~;'r \ l,~ ~ / ` 35 IIYMENOCALLIS CAROLINIANA ~
I ~ ~ \ ,S` 40 IRIS VIRGINICA
_ ~ ' 13 SCIRPUS PUNGENS _ 7 SAURURUS CERNUUS
~ ~ ~ ~ ~ t ~
I / \ ~ ~ \ ~ ~ \ ~ ~ _ -
~ , . , ~ i - _ .................PLANTING = PLAN ~ Vl
~ ~ ~ z' , ~ ~ _
_1__.=10
~ ~ NOTE:
424 ; ~ ~ ~ THE CONTRACTOR SHAH SEED AND MULCH ALL BARE
- _ ; ~ ~ ~ AREAS EXCEPT IN AREAS WHERE PLANT MATERIAL IS
~ f PLACED AFTER CONSTRUCTION IS COMPLETE SILT FENCE 422 - ~
D~ r~ p~~) ~ SHOULD REMAIN IN PLACE UNTIL GRASS HAS BECOME 'MIN _ ESTABLISHED. ~ ~
420 _ _ _ _ - _ _ SEE CH RT ~ ~ ~ ~ _ A ~
OF M EL-419.0 ! TOP _ f i _ ~ _ ~ ~ ~ r \
' _ CREST - :55 NO Summary Information 418
1 ~ ~ ' - P E STEM- Cornerstone Park
~ _ _ ' SU PORTS AT 3' Extended Wetland Detention Pond 2 -Lot 7 _ 416 - P GRADE ~ M BASE Storm _ Q ak Q eak Max.-- _M~____
REL LINE ~ Pe p 1NG 8AR - - f - Frequency In Out WSEL Pond Storage
- ~ ~ - POOL ~ r. cfs cis ft. ac,ft. 414 % HIGH MARSH ~ \
lSER ELEV OH 416.00 ! - -Y - - _ _ _ . _ _ _ ~ ~CONIVEGT- R 2 2.22 1.95 417.76 0.056 / ~ \ ~ ~ ~
i TO ELEV 14.5 10 2.80 2.79 417.82 0.058 t 4 D1P 412 ~ 4x4 TEE ~ 100 3.49 3.49 417.86 0.060 ~ HIGH MARSH ~ ~ ~ ~
~ -SEEP C LAR 24 ~ PRECAST REINFORCED , ~ ' i / 315 SF
. , 410 ~
, 4" 0' HB ~ ,
INV=40 ~ ~ ! Elevations . , _ _ Basin Bolton Elevation 414.50 ft.
408 ~ 4 NRS TE VALVE ~ ~ Permanent Pool Elevation 416.00 ft.
~ ~ Crest Elevaton 417.55 ft. i
406 I Top of Dam Elevation 419,00 tt. ; ; ~ _ - - _ _ F - _ ~ ~ - . _ HOR MAN ' LOW MARSH
46 LF 12 ~ RCP C1A~.S ~I CDAIGRETE ~ 12" INTO FOOiiNG Areas ~ 275 SF
i 404 CLASS 1 RI P 5.66X SLOE 5'L x 5 W x D , FORE BAY MICRO POOL
-01 SIPAT4R-PAD 2 THICK Permanent Pool Surface Area 1002 sq.ft. r ~ I 2,500 psi C ETE Drama a Area 1.06 ac. I ~ ~ USE LTER FABRIC DERLINER 9 15O SF 150 SF
402 Impervious Area 0,54 ac.
~ i DATUM ELEV i
Other Parameters 400, 0~ Design Rainfall 1 in. runoff ~I
1D cV ~ ~ ,n ~ rn ~ o Drawdown Device Skimmer
o0 o Ki Sri ao o ri Sri ~ ~ ~ c~ o 0 0 r- ~ N ~ ~ Min. Drawdown Time Req d. 48 hrs. 1 I j ~ HIGH MARSH
~ d~ ~ `t `r Mm. Detenlion Volume Req'd. 0.045 ac.tt. \
Detention Volans Provided 0.046 ac.ft.
10+80 11+00
10+20 10+40 10+60 10+00 Lot 7 Extended Wetlands • Pond 2
NOTE: 2" Skimmer wI 2" head
• Skimmer to Use: z - 1, 1 Z 0 RCP SHALL BE TONGUE AND GROOVE W~CONFINED D RING GASKET volume to be Drained = 1,957 cu. ft. RISER BARREL PROFILE VIEW
c~ " ~ AST! C-443 LATEST AND JOINT OF ASTM-C-361 LATEST. Draw Down Time = 2 days MEETING z 1 =10 HORIZ PLANTING AREAS - ALAN VIEW
„ IN Orifice Area = 0.87 sq. in. } 2. KEEP 4 GATE VALVE CLOSED UNLESS THE NEED TO CO?UPLETELY ORA ~ 1 =5 VERT Orifice Dlameler = 1.05 Inches t =5
~ THE POND IS NECESSARY FOR MAINTENANCE PURPOSES.
z
PLANT LIST
w A o ° A z
z ~4 REBAR 12" QUA SPECIES Common Name Spacing ENT _ . _ _
w - O.C. EACH WAY VENT - w ~ ° SCREENACCESSIBLE THROUGH
W~ PRESSURE RELIEF o ° ° 8 Canna flaccida Golden Canna 3' o.c. DOOR
> MOLES 1/2" DU. o ° c> n Ili i i " 63 Hyme oca s carolmiana Sp der L ly 18 o.c.
«s = GAOE carRLM.ATED ~ NOTE PLAN VILW ° o TOP IS 10 SKIMMER MAY VARY ~ o METAL OR I/8" STEEL PIAIE. ';7 40 Iris virginica Blue Flag Iris 18" o.c.
W PRESSURE R£UEF HfxES MAY _ _ SLIGHTLY FROM = BE OMIIIED, IF ENDS OF 3$ Juncus biflorus Shore Rush 2' o.c.
~ coRRUCArarrs ARE LEFT BARREL ILLUSTRATION 8 Myrica cerifera Wax Myrtle 5' o.c.
3 wEiDED (Trn) Fuur oPEN wNEN rNE roP Is PIPE ATrACwED. 1/2" PREFORMED JOINT DWI _ FILLER, 12" WIDE
17 Nymphaea odorata Fragrant Wafer Lily 3' o.c.
CYLWDER IS 12 GAf£ CORRUGATED METAL PIPE • ~ ~ FLOar 36 Panicum virgatum Switch Grass 3' o.c.
FAd41CATED FROM 1 8" ~ ~ ~ A2" STEEL PIAIE. / . ' . ~tv 51 Pontederia cordata Pickerel Weed 18" o.c. a;%~~~~°~~~',~,°~~~
O N iA~µ~UND 43 Sa ittaria latifolia Broadleaf Arrowhead 18" o.c. x ` ~ ` V 9
19" NOTES: OUTLET END; CONNECTfON N - 1. iNE CYLINDER MUST BE FIRMLY 8" 23 Saururus Cemuus Lizards Tail 2 o.c. ,ti~ H
N FASTENED TD THE iOP OF TD OUTLET PIPE OR RISER c 1NE RISER. BARREL PIPE LONGER THAN SHOWN
2. SUPPORT BARS ARE A17ACNE0 2000 PSF MIN. ~ - - za" w STRAPS Ba.rED To raP SECTION BEARING CAPACITY Scir us un ens Three-S uare r NOT INCLUDED WITH SKIMMER 35 p p g q Bulrush 18 O.C. ,
N of RISER. ELEVATION BENEATH COLLAR SUPPLIED BY USER " 14 Zlzarna aquatlca Wild Rlce 18 o.c. azro ~ h t tpy i
r 6 x 12" SUPPDRi BAR SIZE 0 SPACER BAR /8 REBAR ~~d ~+.r~ 1 f~4 '
(IYP) Z FLEXIBLE R~~~ rl ~ 4 FLEXIBLE JOINT - - _ - _ _ _ "~"ap
a m ~lIaBPlP ° R
~ secrlaN A-A SKIMMER z ANTI-SEEP COLLAR SKIMMER DETAIL
, r,rr-v nn nnr _ 1,
ANTI-VUKItA UtVIUL N.T.S
z NTS
o NTS - 6
Sheet No.
No. Revision - Date B Designer Scale W&R AS NOTED 1 REVISION TO DWQ PONDS & LEVEL SPREADERS 5/20/02 JAC
- CORNERSTONE PARK Drawn By Date S
CBP 200147 EXTENDED DE 'ID DETENTION WETIAND POND 2 LOT 7 ENGINEERS I PLANNERS I SURVEYORS
d - Checked By job No. 0 111 MacKenan Drive Cary, North Carolina 27511 tel: [phone] fax: [phone] www.withersravenel.com
- RALEIGH, NORTH CAROLINA KLJ 200147 Y - - -

_ /
~w ~ ,
/ ~ I4N WETLAND POND 3 -PLAN .VIEW ~ EXT~'~fDED DETENT - ~ ~ ,f ~
r 1 X20 / . 3 JUNCOS BIFLORUS ,
- ~ ~ / 45 SAGfTiARIA
~ I I PELTANDRA Vt
_ ~ \ , I ANNA FLAGGI 13 ! ZIZANIA AO ~ y, 29 JUNCOS BIFL~RUS
/ ~ OC 45 PELTANDRA VIR `z - CANNA F<~+GCIDA
9 CANNA FLACCIDA
• - . ~ ,
. / - . ~ , , 2Q5 PONTEDERIA CORDATA
CLASS B RIP-RAP ~ / ' DISSIPATOR `PAD
_ ~I / , " ~ b9 Lx8 Wx9 D ~ ; ~
Y - USE FTLIER FAIR , r- y . ~ )
. t ~ ~ ~ UNpERLINER ",1 n +.~~~#+.~++f#f ~~i
, ~.y..---- ~ - J „ 1 i + +++,~`++1 + + 1 + f # ; + + ~ i + + ? + + +++1+ + ++.a. + + r + + + + + + + +f~ + n + + + + + + f#+ f + + + + + + + fW y, W W W W W W ~p~. I # + + 1 + + + +1+#+ + +
, ~ ~ • ° 1NV"3'98.00 + # + + + + # + .F+ + + r#+++ + 1 + + 1 + + + +
~ . uo ~ + + + + +
1 ' ~.....-._._._.r..,_._..~ o ~ _ > ' + f?++ 1+ W W N 'Y r' +++++++f~++++++++ W W 'V W W W W W + + + + r + + # + + 1 ~ 1~ + W W W W W W W W W W W '
J _ i~ / ~ . , f + + # ~ 1 r+ W W W s 1++++ W W W 'Y W W 4' y W W W .
~ ' ~~LF 24° RCP ~ F i . + + ~ W W y W W W W W W W W W W ~ ~ „~+t+., ~ ~
• ; . S UI ~ 1.00 ; ~ ~ . W W W W W W W W W W W W W W
I- W W W W W W I_.
o ' NCREIE , ' 36 d CO 1.
3 RISER W/TRASH
O . _ ~ RACK ~~iii~~ ~~~~iiii~~~~~~i ~~ii~ ~~ii ~ - ~ iii _L ~AURURUSCERNUUS
, - +400.5 SIGNER ~ ~ ~ ~ ~ _ _ 1. -L L 1 I I_ l l . 15 . I-- 1__ i 1.. 1_ I_. L. L_ l_ L l_ l_ _ l
+ 399.5 ~ 'i ,d I v......"
,
• _ _ I 55 5A
o _ _ o n / I3 SCIRPUS PUNGENS
' _ ~ ! 33 NYMPt1AEA ODORATA_ ~ 23 SAGIITARIA LATIFOLlA 8 MYRICA
~J o d ~ t W _ U N _,..13~-~fi~ARfA TiFOLIA HY OCALLISCAROLINIANA ~ ~ 70 MEN ` ~ 2~4 PANI _ - 63 IRIS VIRGINICA 33 SAURURUS ERNUUS
o - / (k 9€~' CI1'l J' I ill l Krl ~1..: ~ ,
~ ,.r ~ z , ~ _ , ca ; - 5ANIlARY . Wi~k ~ASI,Mf~NI _ ~ _ o ;
, ~ _ ~ ~ ~ - ~
, _
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~ n ~ ~ ~ 1 Sf ~IL;R • 311 AI
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410 Summary Information
~ Cornerstone Park i ! ~ Extended Wetland Detention Pond 3 -Lot 7
408 ~ NOTE: _ - - - P1ACE SIEM I ! - Storm Qpeak Qpeak Max. Max.
SKMIMER D E SUPPORTS AT 3 ~ BBgBE 8E'TA~)- TO RISER Frequency In Out WSEL Pond Storage i
0 FROM BASE - _ - - ~ ds ~ 8---_ ac.ft, p .5- - - - _ -
EL CENTERLINE WSEL " 2 5.60 2.60 402.74 0.1 ALONG dAR HIGH MARSH
404 - - _ --SEE- CHART 10 7.22 6.29 402.90 0.183 TOP OFD EL=403.0 CREST 6401.55 , .
_ _ _ . _ .ter. ~ ~ 100 8.79 8.79 402.96 0.190 , HIGH MARSH
1 1 4. DIP 402 - ~-POOc ; , _ ,
I AlION 401.00 Elevations - - - - _ _ t
400 Basin Bolton Elevation 399.50 ft. MICRO POOL FORE ~F?`""" LOW MARSH
=398.25- _ 6'/ PRECAST NFORCED Permanent Pool Elevation 401.00 ft. -BETE... f (R'ISER) 402.55 ft. 1,082 SF 496 SF ,496 SF
Crest Elevation 398 _ ' L..
- COLLAR- _ " To of Dam Elevation 403.00 ft, AN l_SEEP 4 HB p CLASS I ,RIPRAP (SEE DETAIL) S lE VALVE ~ .
396 4 NR I DISSIPATOR D 24 THICK _ Areas
- -t1SE f}LTER itNDE'Rt1NE - - 25 LF 24 d RCP CLASS I - ~ i Permanent Pool Surface Area 3306 sq.ft.
394 0 1. SLOPE Drainage Area 2.24 ac. AN . MNVVHOIE AT _ r HIGH MARSH
~ 12 I CONCRETE ZING ~ Impervious Area 1.79 ac. 1,231 SF
8' x 6'W x 18~ 392
' US 500 psi CO I Other Parameters I i
EI,E'y Design Rainfall 1 in. runoff DATUM Drawdown Device Skimmer AR -PLAN VIEW
3so. 00 r- ~ Min. Drawdown Time Req'd. 48 hrs. co ~ r--__ - ~ -~o
cO `n nj M ~ ~ ~ Min, Detention Volume Req'd. 0.144 ac.ft,
`R ~ rn o 0 0 ~ ~ o ~ ~ Detention Volume Provided 0,145 ac.ft. ~ M ~ of d- V~ _
Lot 7 Extended Wetlands -Pond 3
+40 NOTE: 10+60 10+80 11 +00 2" skimmer wl 2"head 10+00 10+20 10 , , Skimmer to tlse:
~ 1. 24 "0 RCP SHALL BE TONGUE AND GROOVE W CONFINED 0 RING GASKET z Volume to be Drained = 3,652 cu. ft. PLANT LIST
- R BARREL -PROFILE VIEW _ _ r. ~me. 2da RISE - T AND JOINT OF ASTM C 361 LATES Draw Dawn Ti ys MEETING ASTM C 443 LATES
} KEEP 4 GATE VALVE CLOSED UNLESS THE NEED TO COMPLETELY DRAIN Orifice Area = .7 sq. ~ 1 "=10' HORIZ " 2. S acin QUA SPECIES Common Name _ p_
~ 1 "=5' VERT Orlflce Diameter ~ 1.88 Inches a THE POND IS NECESSARY FOR MAINTENANCE PURPOSES.
25 Canna flaccida Golden Canna 3' o.c.
70 Hymenocallis caroliniana Spider Lily 18" o.c.
z a 63 Iris virginica Blue Flag Iris 18" o.c.
w A o o A z 102 Juncus biflorus Shore Rush 2' o.c.
z ~4 REBAR 12' 8 Myrica cerifera Wax Myrtle 5' o.c.
w ~ O.C. EACH WAY W o
ZW o o 33 Nymphaea odorata Fragrant Water Lily 3' o.c.
? PRESSURE RELIEF _ o > HOLES 1 2' aA. F VENT / o o i T S REENACCESSIBLETHROUGH 24 Panicum virgatum Switch Grass 3' o.c. c
PLAN VIEW o o roP 1s fo ~ coRRUCArED N W o METAL OR 1/8' STEEL PUTE. ~ DaoR ' i Arrow Arum 18" o.c. 56 Peltandra virgin ca
~ PRESSURE REUEF HOLES NAY _ w NOTE: 205 Pontederia cordata Pickerel Weed 18" o.c.
~ ~ ucA~ila~s~,~ LEri BARREL SKIMMER MAY VARY 202 Sagittaria latifolia Broadleaf Arrowhead 18" o.c.
3 WELDED (TYP) OPEN wHEN 1HE TOP IS PIPE SLIGHTLY FROM ArrACHE°. DIAMETER 1/2" PREFORMED JOIN>• T~~
' FILLER, 12" WIDE ILLUS 95 Saururus Cernuus Lizard's Tail 2' o.c.
cnawER 1s 11 cACE - _ r-- o coRRUCATEO METAL PIPE - <7 49 Scirpus pungens Three-Square Bulrush 18" o.c.
o OR FABPoCATED FROM 1/8 I 60'-- STEEL PUTS. ~ ~ cy - FLOAT 12 Thalia dealbata Powdery Thalia 2' o.c. " ~yAq~fWS'4eeWZCP
Q l 131 Z¢ania aquatica Wild Rice 18 o.c. ,~~~;s~',~
N ALL AROUND - ~ ig' NDIES: N _._y 1. THE CriINDER MUST BE FIRMLY H'~,.,.. ~ e M ~,,t, 9 r
~ FASTENED r0 THE TOP OF OUTLET END; CONNECTION o ^ i d4~ ~ N
z s TO OUTLET PIPE OR RISER ~ TuPVOSRrRaurs ARE ArrACHEO 2000 PSF MIN. BAR BARREL PIPE LONGER THAN SHOWN ~ ~
a ~s°- eY STRAPS aoLTED ro TOP ELEVATION SI CTION REARING CAPACITY of RISER. BENEATH COLLAR - NOT SUP NOT INCLUDED WITH SKIMMER NOTE' x,.13 f v ~ SUPPLIED BY USER THE CONTRACTOR SHAH SEED ANO MULCH ALL 9ARE
/6 x 12" SUPPORT B4° S7E ~ SPACER BAR ~8 REBAR AREAS EXCEPT IN AREAS WHERE PLANT MATERIAL IS , I gra;
J (TYP) PLACEn AFTER CONSTRUCTION IS COMPLETE SILT FENCE '`I> M~`"
N FLEXIBLE JOIP -FLEXIBLE JOINT ~'~~;d'~ Jt-~,~ ~ SHOULD REMAIN IN PLACE UNTIL GRASS HAS BECOME P~,~~s~~ A
m ESTABLISHED.
~ SECTION A--A ANTI-SEEP COLLAR SKIMMER DE T SKIMMER DETAIL , ~ ~ a
N.T.S N.T.S -L-"
ANTI-VORTEX DEVICE ° NTS
o NTS
° No. Revision Date By Designer Scale
v W&R AS NOTED CORNERSTONE PARK Drawn By Date EXTENDED DE
CBp 1 24 02 'JD DETENTION WETLAND POND 3 LOT 7 WITHERS RAVENEL Sheet No. ENGINEERS I PLANNERS I SURVEYORS
RALEIGH, NORTH CAROLINA CS - Checked By lob No. 0 111 MacKenan Drive Cary, North Carolina 27511 tel: [phone] fax; 919.467.6008 www.withersravenel.com
'o o KLJ 200147 Y - -

, , , , . f i ,n , •
1 , . ~ x ~,a ~ rol~M , ~ , ~ • _
' 1 ` ' ~ DRAINAGE fASEMENI CLASS 'B' ~P~RAP : ~ ~ ~ / ~ i ,
\ ~ ~ ~ ` ` ' DD 2000 I'0 ?238-2239 / ; ~ ~ DISSIPATOR PAD ~ _M 1 ~ • t~ ~ ~ _ i
_19 Lx8'Wx9 D ~ ' ' , K: " ~ "
1 , • USE FILTER FABRIC ~ \ ~ , , , , f UNDE fNER - ~ CANNA CODA ~
1 RL . , \ - a r.- ~ ~ r , ~ t 39Jl~NCU IF~.~ORUS--':. 75 5Af 11TARIA EAIIFOLIA .
o ~A t" ~ • , ' 18 JUNCUS ~IFLORUS - ` ~ i , , ° ,
~ _ \ , f1 ~ ~ F ~ ~ ~ F` ~ ° 9 CANNA I:LACCIDA
~ 1 , . , . , ' ~ ~ " , . • 48 S ZiZRNIA AQUATICA
, , ~ ~ , , , ' , : : - 3 111YMENOCAlll5 CARO~IAIIANA
,,,96 CIRPUS PLIN N~a l \ \ ~ ~ ,
.~.w_ ~o o INV~ 4211, 24 ~ , , v ~ ~3 fa NIOUNI VI<~GATU " ~ ; • ~ • ~ : , _ y,v M \ A ~ ~
, ~ , ' ~ ~ ~ 3~ ~ \ ~ -,.u. , . • ' ~ 7 M~'RIGA CERIFER~ ~
\ ~ ~ , , - 40 LE R iiiii • , ,
\ ww.. ~ ~i , , - - ~ - - _ ~ i i ~ ~ - ` • L _i v ~ ~ ~ ~ L - i
~ ~ • , ~ - ' ~ CLASS ~ 1, \ \ ~ ~ -i. , ;a ; , r . , i l ii i \ iii iii 1_ h 1 1 _L- ~ ~
, ~ , ` ~ ~ ~ iii iiiii ~ • ~ ~ ~ iii
~ , , „ _ , _ , p I ~ ~ , , , , , t rr,~ r +rr + W W W I~ ,y A \ ~ + + r ..,y {rir r r \
, , \ , - , , ~ r . , , t r r v r+ '4 .Y W ~Y , `4 W W W
, ~ ~ , - r , , _ ~ rv 4 .5 24@ ~ ~ + , r. - N } ' + r+ i V W W W ~ '3'% i ~i ~t tt ii r r r r+ L, i
~ , ~ ~ ~ ~s . , \ X _ v . . 1. ~ i i r ' a' ~ .ems - , ~ 1 .t r + r
~ ~ . , r . „ , , , MH6 ~ ' ~ 'DPAJEYliGE ~A,S L~ i, ,A r e r r r y V W 1. I r" r 'l ' ~ t * r +
' ; ~ ~ : , , , ~ a~ ~ ~ ~ a ~ \ - • ' ~ ~ e ~ 5 SK MER ~ ~.A , D(~~, 2.000 ~L'F 12 3 23~ ~ ~ - _ ~ + , ~ rr+~+x r W W W _ ~ _
7 , , , ' \ ' , 424.0 ' \ c^ ~ ~ ~ r t
. ~ ~ ' ' + f~ , , ~ ~ , ~ art---> ~ Q(~ /1 ~ \ , , , ~o i i W ~ 11 A I AR I IANA ~ i i 38 YMENOC LL S C OL N i i i
, ~ , i . , , \ ~ ~ 01 ~ o. ~ ~ i i i i i ~ i 3 CANNA FIACCIDA iii ii
, . ~ ~ ~ - a , ~ , i ~,-~^-~t,--~ --a --a i i i i ~ i i i i ~ ~ ~ ~ ~ i i i i i ..1_ 5g SAURUR~ C~€PSNUUS
\ - , ~ ~ ~ ~ , c o s , J ~E E SE M€: 1 ~ o ,i ~ 1 , , iii i , -t. ~ - ~ ~
- V ~ X273 ~ „ A `.1 ~ I ; 1 . A
~ ~ ~k0 0 RIA T ~ ~ ~ ~ 30 NYMPt1AEA OOORATA
---436" ,1 1 . - _ r' o _ _ , - 1 , , , 1 ~ 1 F /dl IRI ~I~.. ~ AO PONTEDERIA CORDATA ~
~ , , 1 1 " %
, ~ ~ , \ ~ _ 4 ~ ~ - , _ _ 70 SAGITIARIA_IA1IFO~IA ~ - :.r _ _
' ' 1, 1 - , ~ ~ ~i 1„ „ , - - % _ 30 SAURURUS CERNUUS - -
' ,1 1 ~ ~ ~ , 1 ~;1 ~ \ i „ _ , . , , 7. _ _ 59_SCIRPUS PUNGENS
~ „ . , 1 ~ ~ , t , 1 _ ~ ~ ~ ~ r i PLANTI~iG - .PLAN Vl~'W
, - i ~ ~ ~ 1 ' ` 1 ~ A~ ' , .
, _ ~v ~ ~ I ; ~ 1 1 ; , , ~ ~ ; 1 , ~ ~ ~ 1 -10 ,
1 , < . , , , 9 , ,v r ~ „ , 1 _ ~ , ~ ,
. , , , , t ~ ~ ~ , - ~ ~ , , ~ , ~ , • ~ ~ - , • ~ _
, ~ ~ , ,
. , ~ ~ ~ , ~ \ „ , ~ ~ t. ~ ~ ~ , • ~ , • , v
~ ' vv ~ ~ 1 ' ; ~ , ~ , ~
\ ~ = i ~ v
rr~ ~ ~ ~
} x ~ ~ ~ I , , ~ ~ , ~ ,
, , , 1 ' , I~ , ; ~ ~ , ~ ,
' ~ ~ ~ ~ ~ A ~ , ~ , , ' , , , HIGH MARS
; E :END , D ~ ' ;WETLAND:-. N 4 PLAN VIEW i ~ ~ ` t, ; i i c 1 ~ ~ \ ` ~ , I. , . ~ .
7_ , . ~ I _ , , • v
Summary Information HIGH MARSH
Cornerstone Park ~ ~ ~ ~ ' I f
434 ' Extended Wetland Detention Pond 4 Lot 7 _ , ~ ,
' Stonn Qpeak Qpeak Max. Max, ; , ~ MI CRO POOL
432 ! ' ~ ~ Frequency In Out WSEL Pond Storage ' I I l _ _ _ r. C(S Cf5 ft ; ~ ~ ~ 300 SF ~
ac.ft. ' 2 4.40 2.74 426.87 0.125 ~ ' ~ ~ I i • FORE BAY ,
430 - - _ ~ ` PROPOSED GRADE WSEL 11 G WHE 10 5.79 4.64 427.04 0.140 -~OANNECT TO R1SE ` ~ ~ J15 SF LOW MARSH i ~ ~ ' 600 SF
AL 8ARl~EL RLmiE S CHART 100 7.01 5.20 427.48 0.180 ' TO OF DAM EL=4 8.0 MATE; TQ E1EV 4 ~ '
428 a ~ ' ~
Gf~E37 -42G; 6 , - SUPPO TS AT J Elevakions
426 SE , 1 i Basin Bolton Elevation 423.50 is ~ '
_ _ - - • i Permanent Pool Elevation 425.00 ~x4_ ELEVATION 425.00 ` HIGH MARSH 1228.35 Sf
• ~ Crest Elevation 426.80 ft. 424 -SEEP COLIARi ` ,
~ DETNL) - ~4_l.F.l?E fiEfNF Top of Dam Elevation 428.00 fL I _ ; ~ CONCRETE MANHOLE (RIS) ~ _ _ . ,
422. _ _-~_1 =4~1'1~ 4 9 HB \ - Areas
INV=420.24. - - ~ i _ , Permanent Pod Surface Area 2265 sq.ft. ' • _ " ~
` ~ - _f _ _ _ - - - ° - _ - - - - Draina a Area 2.06 ac. 420 4" NRS GATE ALVE ~ g , ~ ,
Impervious Area 1.27 ac. ` I L inn'. ~ ~ ` v:: ~ -
LF 12 "@ CLASS Ill , CLASS I R1P 40 ~ ` 418
~ 0 1,25 SLOPE Other Parameters ~ DISS! ATOR PAD 24 THICK F ' 5'W x 18 T Despn RainfaN 1 in, runoff i _ -
I USE FlL R FABRIC UN RLINER 5 x ANCFIO MANHOLE _AT ' 416 ! US ,500 ' C 12= TNT CONCRETE F T?NG Drawdown Device Skimmer ' t ~ ~
~ Min. Drawdown Time Req'd. 48 hrs. Min. Detention Vdume Req'd. 0.104 ac.fL ~ . /
Detention Volume Provided 0.106 ac,ft.
~ l ' ~ \ , ' P,~41V GAR : ~1V--~1,
N r- N N N N N ~ ~ ~ ~ ~ `r `r 'a' Lot 7 Extended Wetlands -Pond 4 - _ _ _ _
Skimmer to Use; 2" Skimmer wl 2" head - _ 1" 10' -
Volume to be Drained = 4,617 cu, ft,
10+DO 10+20 10+40 10+60 10+80 11 +00 Draw Down Time = 2 days
Orifice Area = 2.01 sq. in. NOTE' NOTE:
• , OrIfICe DlanMtsr= 1.60 Inches THE CONTRACTOR SHALL Z 1. 12 0 RCP SHALL BE TONGUE AND GROOVE W/CONFINED 0 RING GASKET AREAS IXCEPT IN ARF~ NTRACTOR SHALL SEED AND MULCH ALL BARE ~IXCEPT IN AREAS WHERE PLANT MATERIAL IS
- RISER BARREL -PROFILE VIEW ~ MEETING ASTM C-443 LATEST AND JOINT OF ASTM-C-361 LATEST. PLACED AF1ER CONSTR I AF1ER CONSTRUCTfON IS COMPLETE SILT FENCE
} 1 "=10' HORIZ p 4" GATE VALVE CLOSED UNLESS THE NEED TO COMPLETELY DRAIN SHOULD RE~IIN IN PlA „ 2. KEE RE~IIN IN PLACE UNlll GRASS HAS BECOME
~ 1 =5 VERT ESTABLISHED. a THE POND IS NECESSARY FOR MAINTENANCE PURPOSES, SHED.
a
W A - A VENr - ° ° ~ vENr - PLANT_ LIS_T_ _ _
z ~4 REBAR 12" SCREEN ACCESSIBLE THROUGH i~ QUA SPECIES Common Name S acin
w _ DOOR - - _ _ _ _ -_p ~
w O.C. EACH WAY ~ z ° 17 Canna flaccida Golden Canna 3' o.c.
PRESSURE RELIEF o ° ° NOTE: HOLES 1/2" DIA, q ° ° , ~,_y SKIMMER MAY VARY
69 Hymenocallis caroliniana Spider Lily 18" o.c.
PLAN VIEW ° o raP Is 1D cACE coRRUGATED ~ I SLIGHTLY FROM to o MEUL OR 1/B` STEEL PUTS. N W PRESSURE RELIEF HOLES MAY ILLUSTRATION 61 Ins virginica Blue Flag Iris 18" o.c.
~ BE OMRTED, IF ENDS OF 57 Juncus biflorus Shore Rush 2' o.c.
~ wE<DED (nv) ~L R ~TrroNS~~ roP Is BARREL - 7 M rica cerifera Wax M rile ' y y 5 o.c.
~ ArracHED. PIPE 1/2" PREFORMED JOINT DIAMETER FILLER, 12" WIDE a 30 Nymphaea odorata Fragrant Water Lily 3' o.c.
rn v, CYLMIOER IS 12 GACE ' FLOAT
o CORRU'GATEO METAL PIPE ;1 ~ F ° o OR FABRICATED FROM i/8' c~ 23 Panicum virgatum Switch Grass 3' o.c.
a SrEEI PUTS. ~ 'Sv 80 Pontederia cordata Pickerel Weed 18" o.c.
c rACKWELO • r N ALL AROUNO - ~ OUTLET END; CONNECTION 145 Sagittana latifolia Broadleaf Arrowhead 18" o.c.
N 19" NOTES: _ I, _ _ ~ = - 1. THE CYLINDER MUST BE fIRMLY e 70 OUTLET PIPE OR RISER p FASTENED TO THE i0P OF .~sr~~~ma~,~ 'd, BARREL PIPE LONGER THAN SHOWN 89 Saururus Cernuus Lizard's Tail 2' o.c,
- - THE RISER. 2. SUPPORT BARS ARE ATTACHEp 2000 PSF MIN. WITH SKIMMER NOT INCLUDED 155 Scirpus pungens Three-Square Bulrush 18 o.c.
o 24`-- BY STRAPS BOLTED l0 TOP ELEVATION SECTION BEARING CAPACITY SUPPLIED BY USER
~ of R1SER. BENEATH CDLLAR F //6 x 12" SUPPORT BAR SIZE 48 Zizania a uatica Wild Rice q 18 o.c. :
~ SPACER BAR /8 REBAR _ - - _ _ _ _ ~ ~ • ,h
Z mP) v, FLEXII FLEXIBLEJOINT ~n"~d~'~~ ,t~; r, ,
m ~^T,
~ ECTION A-A - N S ANtI-SEEP COLLAR a Pw~, ~ ~ ~ SKIMMER DETAIL ~ra~d~s, ;
n~frf_vnprw n~tii~~ SKIMM
Z nirtr vvnr~n y~rrv~ M TS JIT
NTS ~ NTS
Date B Designer Scale K No. _ Revision__-_______-_
W&R As NOTED ~ $ - - Drawn By Date CORNERSTONE PARK Sheet No.
°a JAC 11/28/01 EXTENDED DI ED DETENTION WETLAND POND 4 LOT 7 WITHERS RAVENEL ENGINEERS I PLANNERS I SURVEYORS
o - Checked By Job No. RALEIGH, NORTH CAROLINA
g - KLJ 200147 Ti MacKenan Drive Cary, North Carolina 27511 tel: [phone] fax: [phone] www.withersravenel.com
Y

~ / I8 PANICUM IIEMITOMON
~ i 53 PONTEDERIA CORDATA
I OCANNA FLACCIDA 34 SAGITTARIA LATIFOLIA . 39 ZIZANIA AQUAIICA
I } 47 TIIALIA DFALUATA .
/ ' 63 IRISViRGiNICA - /
~ ~ - _ / / / / / ~ 46 JUNCUS 61FLORU9
47 SCI 47 SCIRPUS PUNGENS ~ ~ ~ . ~ _ + / ; , , / r+, /
, 1 I , , ,.+r .
I . 1 _.1 W W W W W r . r - + * + + / / ~ .r f ! ~ -
' ~ r + W W W W W W r r r++ r + + ~ r
. + i + ~ Ij . + ? r
/ / / / ` - W + + r + r +
Vim. / / / + + / / / W W W +
1 ~ t \
i ~ ~ ~ ~ - - i ! 1 J W W W W W W W W W l -1_ / W W W W W W W
' 1 / ~ ~ , , / W W W W W W W - / /
J ~ ~ _ , ~ , _ , W W W W W I__ . W W w
• c 1 U~ , ~ 16 NYMPIIAEA ODORATA 1. ~ Tl
~ t I I CANNA FLACCIDA 1_ l L L
~ , _ _ = ~ , / I_ _ 95 SAURURU9 GERNUUS ~ Z- l__
- ~ ~ ~ , - ~ ~ ~ ~ ~ ' l_ L 1.- TA I- t I _ l- l_ - 42 PONTEDERIA CORDA 1_
ti , 1_ _l_ L 9 NY>v1PI1AEA ODORATA l_ I.t_t
~ , ~ • ~ ~ ~ . ,r l- 39 IRIS VIRGINICA
_ ~ _ 40 .5 ~ ~ ~ ~ ~ \ ~ t _ - ~ ~ / _ r'~ ~ /jam \ ~ 7. ~ ` ,
4 4.5 Y- - - ~ ~ ~ ~ ~ ~ ~ ~ ~ ' +404.5 ~ . ~ \ ~ T-' - i ~ - 25 SAGITTARIA IATIFOLIA 40 hYMENOCALLlS CAROLINIANA
, _ . ~ _ y 41 NYMENOCALLIS GAROLINIANA
~ _ x'03, ~ ~ , 4(14.5 40.5/ p ~ 13 SCIRPUS PUNGENS 2 I PELTANDRA VIRGINICA -
/ , ~ + - ~ _ 4 MYRICA CERIFERA
1~ ~ p ? ~ ' I ~ / J i I ° ~ ~ ~ / PLANTING -PLAN VIEW ~ - 23 PANICUM V)RGATUM
~ 1"=10'
~ A , j ~ ~ 11
r / ~ . i , , I f ~ L ~ ...-.r ~ ~ 1 . ~ i
~ ` ~ ~.h~ ~ ~ I~ r~ - r i
I ~ , . ~ ~ ~ RIS ~ R W ~ , ~ ~
/ SH 4. -r~-r„__ ~ r~ ~ ,RACK
~ , _ ~ ~ ~ i .r r ' / li
- p _ ~ I ~ a~~~~ ° ° ~ ~ ~ ~ ~.O l- ~i ` /
~ , ~ I ~ ~ f ~~II ~ ~ ~ ~ '
~ ~ ~ i r ~ / LOW MARSH , ' ~ _ 640 SF
~ ,.off t ° , ~ ~ ~..~-'1 ~ ~ . i / , . , ~ \ .X .i b ~ "
~•,1: off., ~ a~ ° ~ ~ - i-'
- CLASS III ®4.5~~ ~ ~ ~ (J i
OC\ ~ o o ° ~ • ~ \ / , HIGH MARSH
~ / , 1,015 SF ~l i
~ I V 391.00 CLASS GRIP-RAP G - ~ N , ~ ~ i~~.~ ~ DISSIPATOR PAD i , \
. , ; \ ~ _ 8~ 18D - • 1 ,r-~, i~ ~
~ ~ \ _ - USE FlL ~@RIC ; : ~ - / F( FORE BAY MICRO POOL
~1 ~ , ~ ' o . _ UNDERLINER _ / EXTENDED DETENTION WETLA OND PLAN I~ENV / 310 SF ~ 500 SF
. _ _ _ - - .r_--; ~ ~ ~
1: -20
~ ~ ~ , ,
~ ~ ~ ~ ~ - /
_ ;/TAI ; Summery Irrfarmetron ~
_ OPERATING W ~ , Cornerstone Park ,
410 fi- -1Y5EL-- - - - Extended W_ etland Detention Pond - Loi 7 / / TOP OF Q=409.0 I SEE CHART. -storm -Qpeak _Qpeak Max. Max. _ _ PLANTING AREAS -PLAN VIEW
I _ = 7.80 ~ Frequency In Out WSEL Pond Storage / _ ~ CREST 40 _ SIMMER DEVIC / ~ , 1 -10
408 I 2 CO CT TO R1S Yr ~ ~ acct. _ - QTE. - _ ( _ - - i
I _ T ELEV 406.0 2 5.28 2.67 407.96 0.153 PROPO ED GRADE 1 LACE STEM . , . . ~ 1 ) ,14 5.17 408.06 0.161 10 8
406 LONG BARREL ENTERLINE SUPPORTS AT = N POOL 100 12.18 9.57 408.19 0.174
_ _ _ - ~L PLANT LIST - - r LIST NorES: LOW MARSH AREAS SHALL 8E 9"-i8" IN DEPTH.
i ! F UA SPECIE 404 Elevatans _ SPECIES Common Name ROOt SpaCin$ HIGH MARSH AREAS SHALL 8E 0"-9" IN DEPTH.
4jx4" TEE i Basin Botton Elevation 404,5 ft. ANiI- -
" Permanent Pool Elevation 408A ft. 21 Canna flacc 402 ~ ( DETAIL _ 4 DIP Canna flaccida Golden Canna 3 Gal. Cont. 3' o.c.
48"0 RE1NF0 CED Crest Elevation 401.8 ft. _ _ _ To of Dam Elevation 409 fl. 81 Hymenocall H menocallis caroliniana S ider Lily Quart con#. 18" o.c. Y P
-~ONC - 102 Iris vir inica Iris vir inica Blue Flag Iris Quart cont. 18" o.c.
i =399 i g _ . , i _ - Areas 4" 9 ' _HB 9
2 5 .ft. 46 Juncus bifla • Permanent Paol Surface Area ,68 sq 398 - AN OR MANHOLE T LEAST . Juncus biflorus Shore Rush 3 Gal. Cont. 2' o.c.
IN ,397. 4 NRS VALVE.... ~ DrerrMige Area 2,25 ac. ' 12 INTO CONCRETE FOOTING 4 Mynca cenf _ I IrtpenrorsArea .5 ac. Myrica cerifera Wax Myrtle 3 Gal. Cont. 5' o.c.
396 i CONC FOOTING 25 Nymphaea N m haea odorata Fragrant Water Lily Bare Root Liner 3' o.c. YP
~ 44_LF_ 12 CLt~-11L~ - ~ - -t-_ Other Parameters " Panicum he Panicum hemitomon Maidencane Quart Cont. 2' o.c.
DISSIP TOR PAD 18 TICK 2,50D p ' CONC ETE ~ Design Rainfall 1 in, runoff 394 USE FlL FABRIC UNOE LINER ' Drewdovm Device skimmer
w 23 Panicum vir Min. Drewdown Time Req d. 48 hrs. Panicum vi atum Switch Grass 3 Gal. Cont. 3' o.c. r9
Min. Detention Volume R 'd. 0.12 ac.ft. 21 Peltandra vl eq Peltandra virginica Arrow Arum Quart Cont. 18" o.c.
~ ~ w ~ ~ ~ ^ ~ o ao ~ v; Detention Volume Provided _ 0.139 ac.ft. 95 Pontederia i Pontederia corclata Pickerel Weed Peat Pot 18" o.c.
~ ~ ^ ~ ~ O O O O O O - ' ~ M ~ ~ ~ a ~ ~ ~ ~ 59 Sagittaria la Sagittaria latifolia Broadleaf Arrowhead Peat Pot 18" o.c.
Lot 7 Extended Wetlands 95 Saururus CI Saururus Cemuus Lizard's Tail Quart Cont. 2' o.c.
Skimmer to Use: 2" Skimmer w! 2" head i n
1o+so 11+00 _ 60 Sc rpus pu 10+00 10+20 10+40 10+60 Volume to be Drained - 5,227 cu. ft, Scirpus pungens Three-Square Bulrush Quart Cont. 18" o.c.
NOTE: 47 Thalia dealk Draw Down Time = 2 days Thalia dealbata Hardy Canna Quart Cont. 2' o.c.
1. 12 ~ RCP SHALL 8E TONGUE AND GROOVE W/CONFINED 0 RING GASKET 39 Z¢ania a u Z¢ania aquatica Wild Rice Peat Pot 18" o.c.
RISER BARREL -PROFILE VIEW orifice Area = 2.33 sq. in. Z MEETING ASTM C-443 LATEST AND JOINT OF ASTM-C-361 LATEST M ~ Orlflce Diameter = 1.72 Inches
Z 1 =10 HORIZ 2, KEEP 4 GATE VALVE CLOSED UNLESS THE NEED TO COMPLETELY DRAIN
} 1 "=5 ~ VERT M INIENANCE PURPOSES. ~ THE POND IS NECESSARY FOR A
VENT NOTE:
W W SCREEN ACCESSIBLE THROUGH THE CONTRACTOR SHALL SEED ANO MULCH ALL BARE
DOOR AREAS EXCEPT IN AREAS WHERE PLANT MATERIAL IS
z q ° ° q ~'4 REBAR 12" ,,u o 0. C, EACH WAY PLACED AFTER CONSTRUCTION IS COMPLETE SILT FENCE
W NorE: Z - ° ° SHOULD REMAIN IN PLACE UNTIL GRASS HAS BECOME
~ SKIMMER MAY VARY ~ o 'VARY ESTABLISHED,
PRESSURE RELIEF 0 0 o TOP IS 10 GAGE CORRUGATED I SLIGHTLY FROM otl HOLES 1/2" DIA. ~ ° METAL OR 1/B" STEEL PLATE I; j'e N 1M
~ PRESSURE RELIEF HOLES MAY ILLUSTRATION C BE OMITTED, IF ENDS OF " 1
FLAN VIEW CORRUGATTOMS ARE LEFT I - - WELDED (IYPJ guy OPEN WHEN THE TOP IS BARREL
aTTACT+m. PIPE ~ 1/2" PREFORMED JO1NT DUIME>-ER FILLER, 12" WIDE
~d cnlnroER Is Tz cACE - ` FLOAT
~ CORRIAGAIED METAL PIPE W ; ~ OR FABRIGTED FRDM 1/8" ~
STEEL PLATE. I
N rncrcWE~o NOTES: _ OUTLET END' CONNECTION r o ALL AROUND Ml
N 1. THE CYLINDER MUST BE FIRMLY ~ FASTENED i0 THE TOP Of 8" TC} QUTLET PIPE DR RISER '~~.va•••..•..,~.
N THE RISER. `a ~ 2. SUPPORT aARS ARE ATTACHED 2000 PSF MIN. 'R RREL PIPE LONGER THAN SHOWN caRo ~ fESSI •:I'y
eY srwws BOLTED ro roP NOT INCLUDED WITH SKIMMER ~ ~V,~ ~Q
°F RISER ELEVATION SECl10N BEARING CAPACILY v BENEATH COLLAR SUPPLIED BY USER ; = S E A l ~ ; S
8 x 12" SI~PPl1RT RAR SIZE 0 PACER BAR 1 1/4^ x 1 1/~" ANCLE OR 15423
~Typ~ 1 1/4 STEEL PIPE. Z _ : ~ t FLEXIBLE JOINT FN61NE~~
N Q 00 MANUFACTURED BY FAIRCLOTH s,'P,p
~ sECr1oN ~,--A Y JAY JE
- _ _ _ aNTI-SEEP COLLAR SKIMMER DETAIL / ®~a. /1~•'•'a"'•"''~
N ANTI-VORTEX DEVICE ° N.r.S
NTS NTS Z
° No, Revision - Date B Designer scale Sheet No.
1 REVISION TO DWQ PONDS & LEVEL SPREADERS 5120102 JAC W&R AS NOTED $ - Drawn By Date CORNERSTONE PARK
- JAC 11/2 8 01 EXTENDED DETI DETENTION WETIAND POND 5 LOT 7 ENGINEERS I PLANNERS I SURVEYORS
CS Checked By lob No, RALEIGH, NORTH CAROLINA 111 MacKenan Drive Cary, North Carolina 27511 tel: [phone] fax: [phone] www.withersravenel.com
8 JJJ 200147

_.____.e_~
\ \ ~ \ ,r i
. - _ CLASS DRIP-RAP 10 LX 6b DISSIPATOR PAD LEVEL - O
~ i ~ y \ 12 Lx14 Wx24b USE .SOD,
~ ARMOR SIDE SLOPES S _.J USE FlLTER FABRIC TO,,STI(BILIZE\ /
CLASS 1 R1P-RAP, UNDERUNER READER AREA,
24 ~ ICK WITH FlL1ER \ ~ ~ \ F IC ~UNDERUNER ~ ALT ° _ 9 ~
0, ° ~ FENCE \
I ~ t^/, " .r
I ° Summary li Summary Information VENT
. Comerstoro Cornerstone Park SCREEN ACCESSIBLE THROUGH
~ Extended C a5 LF PvC Extended Dry Detention Pond -Lot 8 DOOR
3Q'.N.R.B. - x Storm _ . _ ~0 INV Storm Qpeak Qpeak Max. Max.
.5 / 391.0 ^ Frequent Frequency In Out WSEL Pond Storage NOTE:
r. cfs _ cfs _ ft. _ ac.fl. -Y--------------- SKIMMER MAY VARY
LF RCP / 2 ° ° ° 2 14.06 5.22 396.01 ~ 0,456 T 0.506 SLIGHTLY FROM 10 20.24 14.55 396.27
~ ° 1 \ 100 30.20 21 396.58 0.567 ILLUSTRATION
° ° ° ° 39 \ goo ° 7 ~ ~ \
° ° o ° o o M INV / \ ° ° ° Elevations ~ ° ~°0 °o° 1.5 \ Elevations
° °U o°a ° _ Basin Bottom Elevation 391.5 FLOAT
° / ~ Crest Elevation 395.75 ft.
V ' / ~1k + / Top of Dam Elevation 397 ft.
1: ~ _ / / Areas
Areas OUTLET END; CONNECTION Permanent Pool Surface Area 0 sq.ft. TO OUTLET PIPE OR RISER
BARREL PIPE LONGER THAN SHOWN Drainage Area 5.30 ac.
/ SKIMMER ~ ~ Im ervious Area 4.39 ac. NOT INCLUDED WITH SKIMMER P
\ ~ SUPPLIED BY USER
~ ~ . ~
~ ~ Other Para Other Parameters
Design Rainfall 1 in. runoff FLEXIBLE JOINT
Drawdown Device Skimmer MANUFACTURED BY FAIRCLOTH
Min. Drawdown Time Req'd. 4$ hrs.
\ Min. Detention Valume Req'd. 0.351 ac.ft. $KKMMER DETAIL Detention Volume Provided 0.422 ac.ft.
~ / - N.T.S
~ "r- ~ Lot S F_xtended 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.
1\ Orit'ice Diameter = 2.76 inches

~I ~
I
, , i 4 _ 0
,
LAN VIEW DRY DETENTION POND P ~
N 1
1 =2~ ~
~ - VIC _ 9~TAlLj _ _ _ - _
i 400
- - 399 - - E1~i91.0 _ - OF - - _ _ _ _ _ IMMER
398 _ - _ _ _ _ _ _
_ _ -CREST FL- 5 396 _ - - - - - _ _ - - _ OF LNM EL 397.0._ _ - _ _ - -
PROPO GRADE 1 _ 396 _ - _
- NOTE 394 _ _ - - DNG - ~ THE CONiRAC1OR SWW. SEED AND MULCH ALL BARE -
AREAS EXCEPT NV AREAS Mi~ERE PLANT _ SEE DETAILS 394 -pnS11NG _ r
- - - ~ 1~A3tN= 15 392 - PLACED AFTER Cf~hSTRUC110N IS COMPLETE SILT FENCE - _ _ _ SHOULD REMA~V W PUCE UNill GRASS WISE M ENCE _ _ ____r__ _
392 -._GIN[ERI,~______ _ _
ESTABLiSMED 390 391. _ ' 391.5 _
- _ I~_ ~ r MCP- 14X.-_ IIMIHOLF AT 390 -
_ --44-~-~- ~2 CaNCRE~E nNc 386 45 LF 121 _ _ _ _ _ _ -JOINTS L 8E WATER ) _ _ _ _ _ _ _ DET L
CLASS _I RI _ - _ 388 - _ _
386 _ AfiOR_PAD_2 . - _
_ _ 386 _ _ _
- 384 _ - - -
~ h c oo so ~ ~ ~ ro r; N ?7 N N N N ~ ~ ~
~ o ~ ry ~ ~ f\ 8j O~ Os Of Of QI ~ ~ M ~ ~ ~ ~ ~ ~ M ~
10+00 10+20 10+40 10+60 10+80 11+00
10+10 10+40 10+60 i~ 10+00
NorE:
- PROFILE VIEW P SHALL BE TONGUE AND GROOVE W CONFINED SKIMMER DARREL - PROFlLE I~EW
RISER DARREL 18 r RC 1 "=10' HORIZ
N- ~ ' ' KET MEETING ASTM C-443 LATEST AND i -10 HORIZ 0 RING GAS 1 "=5' V~RT
~ vERr JOINT OF ASTM-C-361 LATEST 15
A A
. ~4 REBAR 12"
O.C, EACH WAY 0
PRESSURE RELIEF + ° ~ ;r. x ~ HOLES i/2" DIA. u c O 2" PVC FEMALE ADAPTER (1YP 2" INSERT FIT~NG
00 rC
N PLAN VIEW o o mP a To ~ aosRUCArm N o MEra oR T/d' STEEL PULE. 11 x2 BUSNII~ " IN FROM
C7 PRESSURE RELEF NOLES ANY n BE OMITTED, ff ENDS OF . 12 PVC COUPLING SKIMMER
0 CORRUCAiIONS ARE LEFT BARREL 12' PVC PIPE
O WELDED FULLY OPEN M{EN rHE i0P IS ~ 1 2 PREFORMED JOINT o ArrACNED. DIAMETER ~ a FILLER, 12" WIDE
crLavoER a I2 CACE '
coRauGATED MEru. PIPE o ~ .
° aR FA6RIGIED FROM 1/a" i ~ 78" STEEL PULE ' N
rACKWELD v' Qp ALL AROUNO
h 5" NOTES: , O f. THE CrilliDER MUSi EIE FMDILY 8~ 2' PVC PIPE ~
a m TF~ roP aF ~H Alpp ~ li
Z 2 SUPPORT ENRS ARE ATTACHED 200D PSF MIN, • r~AMP ln'PI ~ tss 2 PVC PIPE ~
~ s>r~PS BOLD 10 ELEVATION SECTION BEARING CAPACITY a of RrsER. BENEATH COLLAR m / 2" FLIXIBLE HOSE SEA L
CC SPACER2EGW 1 1/4" x 1 1/~" ANCLE OR = nYp~ 1 1/4 S7FEL PIPE.
U) 16423
U) CONNECTION DETAIL TO OUTLET PIPE ~
PART OF sKIMMER DEVICE ASSEMBL Ry JAY ~
o secrloN a-A ANTI-SEEP COLLAR
f 3%_~, v
d Affil-WHIM ULViLL a
a NTS NTS 0
Sheet No,
No. Revision Date Designer Scale WITHERS RAVENEL , ENGINEERS I PLANNERS I SURVEYORS 10
0 1 REVISION TO DWQ PONDS & LEVEL SPREADERS 5/20/02 JAC W&R AS NOTED Drawn By Date CORNERSTONE PARK E ENDE
o JAC 11/28/01 0
C) Checked By Job No. RALEIGH, NORTH CAROLINA C) _ 111 MacKenon Drive Cary, North Carolina 27511 tel: [phone] fax: [phone] www.withersrovenel.com
JJJ 200147 U

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. ---w... ~ ~ . RIP RAP SPIL WAY DE7AIt
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UMRS OF STdRAGE t~ ~ z, ~ ( , {
n~a ffi ao~ so' L....:~ t ~ ~ x w~ x i ~ v I r~ C J J L l ~~Y ~ . . J 7
N,Rg i ~ ~ . } ~ c_.1 ~ U l n ~
' - SEE DETAILS ~ • ~ ~1;~n
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c.r , --.._._wv. _ . -y~-~,. , _ . ".'.m.
V w,~
l P ~
g~ ~ ~ f?~) , .,t - : ` TOP OF N~7R ELEV = x,39.0 RIP RAP ROCK LWN ABTA
' ~ r \ = 5 DOTAL DRAINAGE A = 7.25 AC AltEq,
DRAINAGE AREA ~ 0,17 AC , \ ~ . . . . ,p, . ~~=Q; ~ ay p° Oo n.o p 10-YEAR DE'~H~VV FLOW, Q = 21.91 cfs
, . - ~ NW10 9.51 _4 ,~°oo°° °p;0po0 M~IR LEIVGIFI = 25 f7
~ . ~ . . o ° o, o ° o STORAGE A~AILA~E TO E1' EIS 239.0 =1065 Cu.R. o ,p O o 0 o O o \ \ ' - 0
4 /f~ p~~ pip 0° 0 eQ ~ , . _ . ~ CIASS 1111/ IV1r ° Qa GA ILI~L/ IW' a ` a . / , \ 4 r 4 .
• -__U- LINED (~4MNEL
A D , j ~ ~ ° AT LE4ST t ABOVE ° 0 • . ~ °a°° TOP OF N+EIR °o,a '*y aD do ~ . ooa, .rh ~ Y 0 0
~ . ' ' m
~ ~ ~ ~ s ~ w_ ~ 1', o o ° UNGE POOL • , ' ~ ~ 0 ° CLASS i RIP RAP ° 0
~ _ ~ ~ ~ o ° o0o N . Ono o On Ono o OonOa ° ° Oo o°Dop o 00 oe eny,Do° INII~ ,ti:S • _ ` p ° "p°p °O cP o opop o0 o p o opap °O ° 0 poano p °p°~ oOo O °Qo Uo npo O °pn Vo Oa Oo o°a o UOQ
o 0000 0oao 0000 0000 0 0a o o _ _ _ i
.__...~__.._r ~ . , . . / \ r++oo ~ m , 0. a ~ ~ ~ i
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~ ~ ~ , . ~ j, / Y° od enoooo
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~ ~ ~ A ti ~ P RAP ROCK DAM DETAit RI ,s~
ARfA=0:25 AC ~ / ~ ,yR ~ N.T.S.
~
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r s 9 ~ _w YI 601 / ' GRASS ~ o:
DfbUNAGE AREA a~ AC ` .
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n -
No, R v ' Date Designer Scole Sheet No.
a REVISION TO DWQ PONDS & LEVEL SPREADERS 5 20/01 JAC W&R AS NOTED 1 F
2 REVISION PER DWQ 2nd COMMENTS 6/06/02 JAC Drawn By Dote CORNERSTONE PARK o JAC 11/28/01 DRY DETEI DETENTION AND GRASS SWALES LOT 6 WITHERS R"ENEL ENGINEERS I PLANNERS I SURVEYORS
C) Checked By Job No. 111 MacKenon Drive Cary, North Carolina 27511 tel: [phone] fox; 919-467-6008 www.withersrovenel.com
a R-A-MIGH, NORTH CAROUNA JJJ 200147
0 0
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x ~ ~ ,
. , , ~ . ~ AVM ~ 'V , l MYRi~A GERIPERA - ~ ~ ~ ~ ~ V ~ ~ A ~ ~ ~ ~ ~ ~ \ I
~ ~ F ~ _ _ , . ~ 24 PA~,ICUM VIRGAT~ ~ 5 . ~ . \ ~ rk \ ~
,t ~ ~ i k ,f ~ , , ~ , 61 JUN Ua,61f' RlJS / ~ ~ \ \ 14 SAGITTA IA •OLIA ;'j'
- ~ , ' y~ 28 IRIg. INICA r ~ , ; ,
j 1 ~ - y ~ ~ r 1 ~ r i ~ ~ ~ ~ ~ ~ / / ~ 40 PONIED RIA G ATA V~'~ ~ ~ 5 ~GITTARIA IATIPOLIA ~ j , ; ~ ~ ~ IRIS I~GIN CA - '
~ ~ ~ ~ /i,i ~ , ~ ~ - \ .
~ ~ r ,r' ~ ~ ~ II _Y ~ i ~ , - ti ~ i ti ..t i ~ ~ ; I ~ ~ ~ ~ /i~ ~ EP~1~:1SRR6UNI / ~ ~ ~ A\ ~ ~ i ~ ~ A' ~i~ \ ,
\ , ! ^ ~ 4 ~ i ~ A ~ y ~ > / ~ - - ~ ice' F , . ~ ,f` ~ , ~ ~ ~ 7 IRIS V~Rfi~ ~A ~ ~ ~ ~ ~ ~ '~j 7 IRIS VIRGI , ~ ;\V ~ i i ~ ~ % ~ ~
~ , ~ ~ ~ ~ r ~ ~ s , r- ~ ~ / ~ / n/ ~ ,r V~ ~ i, ~ / V / . , •
_ , , ~ / _ _ ~ , , . ~ ~ , • ~ , - ' ~ ' ' 19 NYMPf1A~A A ~ ~ i i • • • • • 5, A ~ ~V ~ ~ ~ i ~ ~
~ v S ~ ~ ~ ~J/ l . / ~ r i i~ ~ • • , • ~ A.~~, A ~ ~ /~V ~ ~ ; ~ ~ MYRI A C RIFERA `i ? • • i i ii~•~ \VV~V i ~ • ~ j
~ , S ~ ~ r ~ d' ~ ~ /i / \ V ~ ~ , • • ~ ~ ~ ~ \ ~ 36 S I ARIA I,A'1`I[= , , r~ „ i , 27 P UM V RGATUM
i " C ~ ..1; ~ ~ ~ ~ ~ ~~ar ~NC~~, . , A ~ \ ~ ~ I i P AND~a,ViRGI ~ ; ~ ; , ~ 'a Ir~uS GENE/
~ , i' ~ ~ ~ ~ ~ '1 ' ~ ' , ~ ~ ' ~ . , , , k ~ , ~ i , , ' AROLINIANA 23 PJ ~ ~ ; , I1YM Alll . . ~ A ~ .UP,U~C ,
. , , ; ~ 2 PE TAD I I I A ~ t ~ r~ ~ ~ ` ~ ,i A i i~; ,rte ~ ~ ~ CNN DA RA VIRGINICA ~ - : ~ ~ ~ V A , , i~/ i , \
~ ~ / ~ ~ j. ; , , < ` % 61 ZIZANIAAQUATICA _ i ~ , ~ , , i ~ ~ 13 TI1All D SBA , } R IZANIA AQUATICA ~ Q \
. f, \ ; ~ 64PONTEDERIACORDA ~ ; ~ Q ~ ~ ~ ~Cj~1' , d~„~ f~ , 49 9AUR U UU5 }NTEDERIA CORDATA
~ ~ ~ i i , ~ . , ~ , r~ : ~ ~ ~ ~ ~ o ~ ~ ~ r; ~ ~i~ i ~ 30 NYMPt1AEA0D - LO NYMPt1AEA OD TA _
, , , o ~ ~ ~ . ~ ~ , ~ ~ ~ , ~ ~ ~ , s - , ,F~~"' , ~5~1 ~J po a ~ ~ A , C9 i i Q , Q - ' y~ 17 ZIZ U 20 TN D A ~ , ~ ,
ice' - l , ~ ; ' ~ ~ ,A d ~ / - ~ - ' i i V ~ ~V~~ V i ,i ~C / ~ I ~ y - - - i' ; \ ~ , i 4 EN CAROLINIANA ~ ~ . , 5C US PUNG ~ , ~ ,
~ ~ ~r•• I9 CANNA FIACCI ~ ~ I5 AU 5 CERNUUS
~ ~ \ ~ i ~ / % I i i r..-.. ~ ~ i
~ , i ~ ~ - ~ ~ - ~ ~ i i ~ i ' ~ i \ ~ \ ~ A, ~ ~ ~ ' , ~ ~ ~ , , , , ~ ~ ~ ND 2 ~ - ~ ' 49 5 URURUS G RNUUS ~ ~
i ~ nc y. f i i ~4 JUNCUS BIFLORUS ' ~ t. , ~ ~ ; ~ _
,r ~ ~ ~ a. r ~ r. i - ~ i d ~ ~ 59 ZIZANIA AQUATICA ~ - 17 JU C 5 IFLORUS ~ 4~ _ -
_ , ,5- '
~ ~ , . ~ ~ _ ~ POND ~ , . - r~ , , . ; , ~ 20 SAURURUS CERNUUS ~ ~ - ~ . 87 PONTEDE A C RDATA
r . 4 \ ~ s . ~ _ ~ _ SAGII'fAPJA IA - 2~ IRlS VIRGINICA
~ L ~ i i ~ ~ \ \ e. - ~ ~ - ~ 1. ~ - \ t ~ \ ~ r PLANTING -PLAN VIEW 39 PELTANDRA VIRGINICA A CERIFERA
i ~ . ~ \ j '~i. i ~ ~ _ \ _ / l' . ~ ~ ~ \ v J _ UM " 0
i . _ . ~ ~ _ ~ , /,r M.
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. - , , ~ _ ~ ~ i ~ i ~
- I ~ i A .A~~ !i~ ~
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p~- ~A ~ ~ A ~ ~,A ~ / A F ~ ~~ol{L ~ A ~ ~ A i / / ~
/ i i _ , 32 Lf 24 RCP, ,340 sf ~ ~ ~ ~ , ~ ~ ,
I 4 _ i ~ ~ ~ cuss ai o D.z~x , ~ I ~ , ,
i I, I ~ ~ TE ~ ` y~ ~ i", 180 sf f / ~;'i, , ~ , 10W
. _ _ ; - ~ _ 24 FES 1HE COMRACTOR SIi+ILI SEED AND ~ r ~ I~ ~ , boo ~ - 4LL SEED AND MULCH ALL BARE LOW MARSH ~A , ~ ~A ~ ~ , i MARSH
. , i , SKMMI Y _ , - _ ~ INV 427.40 AREAS E7fCEPt IN AREAS WHERE PU - TEAS WHERE PLANT MATERIAL. IS 645 sf \ ~ ~ ~ ~ ~ ` ~ ~ ~ , 275 sf
' .p, - PLACED AF7ER CONSIRUC110N IS C17 r~, ~ . - _ o IN PLACE UN - ~1RUC110N IS COMPLETE SILT HIGH MARSH ~ , IN IN PLACE UNTIL GRASS HAS 887 sf ~ ~~V'~ ~ ~ ~
r. ~COYE ESTA9LISHED. ~ ~ - - LASS B -RAP _ ~ , ,
_ „ DISSIPAlOR / ~ ~ i ~
, ~ ~ 48'1 COIVC2iE1E . 4" fES _ . _ . _....1,~~~Lx~4'Wx18 2 A~ ~ r. - i' ~
' USE ALTER - / ~'''r,., ~ ~ RISERR W N 428.00 , , . ~ ~ INV LOW MARSH , _ _ ~ 500 sf
~ ; ; ~ RAG(, , 3? LF 14' RCP, - - _ . UNDERLINER , I i - / , M~ /
ti , , I , CUSS 410 0.31X ~ t , ~ , , r ~ I "
1 ~ = _ _ _ 2 ~
- _ - - NTiON WETLAND POND - PL~N-VIEW~ W,. ~XTENDE~ DETE _ ~ _ y~ ,T,~~. ` LdW , r ~
I . . _ - - sH ~ , ~ IcRO
440 ' \ - P VIEW P!A AREAS LAN ,
N~ - _ _ - - ANIi- _ DEVICE~SE D~TA~-- - - VENT _ i i ~ ~ M 1
438 j _ SCREENACCESSI! !EEN ACCESSIBLE THROUGH ~ n" 1=1D ;
- - _ _ _ - - DOOR R ~ - ~
~ _ _ - - - - - - - - - _ _ - - NOTE: ToP of a=43.0 PLANT LIST _
- - SKIMMER MAY VARY
SLIGHTLY FROM _ - - 4,34 _ _ - - ILLUSTRATION QUA SPECIES Common Name S acin
--l~ML- -
'CtAUR_ ELENITInIV .00•._••.-. 432 _AL4NG SIR _ _ _ _ - 7 DETa 24 Canna flaccida Golden Canna 3' o.c.
_ 116 Hymenocallis caroliniana Spider oily 18" o.c.
F~onr " = RISER At 4320 F~onr la Iris 18" o.c. 112 Ins virginica Blue F g
132 Juncus bifloius Shore Rush 2' o.c. ~
INV=428 0 .1 - 428 - „ , OUTLET END; CONNECTION ~H '~0 ~ li 25 Myrica celnfera Wax Myrtle 5 o.c. ~p ~
~ ' i ~ TO OUTLET PIPE OR RISER BARREL PIPE LONGER THAN SHOE! ER rHAN sl•IOWN 65 N m haea odorata Fra rant Water Lil 3' o.c.
_ _ _ - - _ 4 _ _ RISER _ NOT INCLUDED WITH SKIMMER 426 StE1it H SKIMMER y P 9 y SEA L
_ ' SUPPLIED BY USER 81 Panicum virgatum Switch Grass 3' o.c.
32 LF 24"1 RCP C . ,..1110 0.31X .__OPE _ _ 424 - 1 76 Peltandra virginica ArrowArum 8 o c
_ _ . FLEXIBLE JOINT r. "E` ~iN~p ~ 191 Pontedeiia cordata Pickerel Weed 18 o.c. ~ 5~
FOOT11+1G - 4 _ _ _ - _ _ - . x z 18'~ Rr r. dAY d
_ - _ SKIMMER DETAIL 198 Sagittaria latifolia Broadleaf Arrowhead 18 o.c. N„
4" NRS Gklff V111LYE 420 N.rs 157 Saururus Cemuus Lizards Tail 2 o.c. ~.~..,~..w..
126 Sci us un ens Three-S oars Bulrush 18" o.c. rP P 9 q
n .r n w n a ry M~ ~ ~ ca~._. 33 Thalia dealbata Powdery Thalia 2 o.c.
~ ~
137 Zizania aquatics Wild Rice 18" o.c.
10+00 10+20 10+40 10+80 10+80
NOTE. z
1. 24'11 RCP SHALL BE TONGUE AND GROOVE W CONFlNED '0' RING GASKET ER i&4RREL -PROFILE VIEW -POND 1 Z RIS 5 N- OPERAII WH _ ANTI-VnRTEX .(SEE AIL)
YEEtI~VG ASlll C-443 LATEST AND JOINT OF ASTM-C-361 LATEST 1 "=10' HORIZ " NEED TO CObIPIf TELY DR~41N 434 - - _ - _ TOP OF LI=433.0 ~
a 2 KEEP 4 GATE VALVE CLOSED UNLESS THE 1=5 VERT _ glands • Pond 2 _ _ -SEE _ SKI ~19CE._ CT.. TO _ _
THE POND IS NECESSARY FOR MAINTEN~WCE PURPOSES. Lot 9 Extended Wetlands -Pond 1 Lot 9 Extended Wetlands • Pond 2 ~ Skimmer to Use: 2" Skimmer wI 2" head Skimmer to Use: 2" Skimlm „ M 432 _ 1 CRE~'T EL .50 2 Skimmer wl 2 head ALONG ~ -a~ :0"
z Volume to be Drained = 5,793 cu, ft. Volume to be Drained = 2,9 " ~d= 2,966 cu. fl. _ - _ _ ISTING GRADE
a }'4 REBAR 12 Draw Down Time = 2 days Draw Down Time = 2 da 2 days C . _ ALO 4 _ DIP -
z A A O.C. EACH WAY Orifice Ar>~a = 2.58 sq. in. Orifice Area = 1. irea= 1.32 sq. in. _ -
(9 ° ' ° z , o ~ Orifice Diameter= 1.61 inches Orifice Diameter= 1. ~ o _ _ peter= 1.30 Inches 428 ' _INY=42~ - 3'50.... - .
~ . to o o i z ~ ` `v - _ _ _ - -
> PRESSURE RELIEF + o 0 0 - = - _ __48_I! 426 - 32 LF 24'x- L'l~S-1110. CONCRETE LE RISER)
HOLES I/2" DIA,
~ BARREL ~ FLAN ~~EW Summarylniormation Summarylnfonnetion ~ _ wa.Dm (TYP) PIPE 1 /2 PREFORMED JOINT ~,1e ~ Comerstaie Park __--NOS ATtIAST _ 424 - _ g.RIPR4P _ _
w DIAMETER FILLER, 12" WIDE _ _ = Extended Wetland Detention Perxf -Lot 9 Basin #1 Extended Wetiend Detention Parts • Lot 9 Basin #2 ~ _ t2"-INTO FAO - , _ - . pond - La 9 seas, m -LNSSIPAT PAD--LB _ - _
~ Storm Qpeak Qpeak Max Max. Storm Qpeak Qpeek 3 " '~i ' Froquerxy In Out WSEL Pond Storage Frequency In OrA ~ i~ _ _"USE. FILLER. A(TRIC . - _ AT 3 .FROM 6fAASE__ _ " _FOOITIVG _ _ - _ Oul WSEL Pond Stake 422 _
~ ~j yr. cfs cfs fl. _ ac.fl. __'Lr~_.__._ cfs ds a iOP !S 10 G4DE CORRIFG4TED y~,, ' - 2 9.51 ~ 8.84 433.86 0.258 2 11.51 10.88 _ _ - - _ - -(a't. _ e'w X- faro)--- - _ _ de ft. ac.ft. USE 500 pig 1o.e9 43193 x129
o METAL OR I/8" STEEL PUTS 10 18.28 15.8 434.15 0.275 10 20.85 20.49 20.49 432.15 0.143 420
ai PRESSURE RELIEF HOLES WY 100 28,68 24.14 434.50 0.313 100 32.48 29.15 N BE OMITTED, F ENDS OF . 29.15 432.74 0.183
o CORRIM•4RlNIS ARE LEFT rh o0 O! ry Dl <C 01 ~
o - 18" FUUY OPEN WHEN THE TOP IS EleveUons o ArrACHEO. ELEVATION Elevations TACKWELD N ~ N N N N tt^~~ 'w ~ rh rh ~h ~F ~F Fbveion 428.5 ft.
ALL AROUND SECTION Bain Bonen Elevation 430.5 fl. Baskr Bdbn ElevaYon o Permanent Pool Elevatlon 432.0 fl. Permanent Pool FJevatlon rol ElavrAbn 430.0 ft.
o CYLINDER IS 12 GACf CORRI1G4lfD ~ Crest Elevation 433.8 ft. Crosl Elevation n 431.5 ft. levabon 433 ft.
OR FABRICATED FROM 1/B" Top of Dam Elevation 435 ft. Tap of Dam Ebwlion ~ STEEL PLATE. 2000 PSF MIN. , 10+00 10+20 10+40 10+60 10+~
~ BEARING CAPACITY Areas Nee 3160 .ft. Naas Permanent Pool Sadao" Nee >dsu~~ 976 eq.". NOTE:
0 NOTES: BENEATH COLLAR Permanence Surface 3.18 ec, Dial Nee (ti x 12" 2 A R Et4R 1 I/4 x 11/4 ANGIE OR 1. THE CYLINDER MUST BE iIRMLY ~ ~ ' 0.97 FlLE VIEW -POND 2 a D.55 RISER BARREL -PRO ~ ' '
SP CE Impervious Noe 1.81 ea ImpeMais Alva ~ nypl 1 1/4" S1EEL PIPE. FASTENED TO THE TOP OF THE RfSER, 1. 24 ~ RCP SHALL BE TONGUE AND GROOVE W CONFlNED 0 RING GASKET
m 2, SUPPORT BARS ARE ATTACHED OtherPerorrrelers OlherParometere ~ DY STRAPS BOOED TO TOP Design Nairdall 1 in. runoff Deeipn RsinLsl 1 "=10' HORIZ MEETING ASTM C-443 LATEST AND JOINT OF ASTM-C-36 f LATEST. i 1 in. nn,on 1 "=5' VERT 2, KEEP 4" GATE VALVE CLOSED UNLFSS THE NEED t0 COMPLETELY DRAIN
rD ANi l SE ~axdown Device skimmer Drewdo~ Dews s DF RISER. - EP COLLAR s~~
m SECTION A-A Min. Ikewdown lime 17eq'd. 4B hrs. Min. Drewloen Time neq'd. nee gab. +e h~. THE POND IS NECESSARY FOR MAINTENANCE PURPOSES, n VoMnne Req'd. D.064 ecfl.
ANTI-VORTEX DEVICE ~ Min. Detar4ion Volwne tiaq'd. 0.130 ec.fl. Min. oelerruon vokana ~ d. p Detention Volume Provided 0.133 ac.ft. DeknUon Vakane Proved ume Provided 0.086 aaft.
a
NS
No. Revision Date B Designer Scale Sheet No,
$ W&R AS NOTED 1 REVISION TO DWQ PONDS & LEVEL SPREADERS 5/20/02 JAC CORNERSTONE PARK WITHERS R"ENEL IED DETENTION WETIAND POND LOT 9 ENGINEERS I PLANNERS I SURVEYORS 12
v RALEIGH REVISIONS 6 06 02 JAC Drawn By Date 2 CITY OF b CBP 1/24/02 EXTENDED D
0 'g Checked By lob No.
MA-MIGH, NORTH CAROLINA he KL.J 200147 111 MacKenan Drive Cary, North Carolina 27511 lei: 919.469-3340 fax: [phone]M8 www.withersravcnel.com 11

CLASS 'B' RIP-RAP
DISSIPATOR PAD
• 19'Lx8'Wx9'b i
USE FILTER FABRIC UNDERLINER
r
I I
R~
~ !2" FES o 4 MYkICA CERIFFRA
_ INV 426.00 4 ~ o k~ 8 PANIGUM VIRGATUM I SAURURUS CERNUUS
ti ~ o \ ~ ~ 30 SCIRPUS PUNGENS _ _ _ _ _ 46 JUf~;C~r6~F~pgUS
- o ~ o ~ 000 . , 9 TfiALIATJ~AL~6ATA
_ ~ , i 5 CANNA FIAGCIDA 285AGfiTARIA IATIFOIIA ~ `
0 ~ ~ Z oo \ ~ / _ - - ~ ~
- - ~ ~ . - , \ o / ~ _ _ _ _ _ ~y
1 _ _ p ~ ~ ~ ~ ~ ~ ~
_ _ - - 1 1-. ~ - . / . ~
I ~ - - _ 1 ' i r t / ~
~ 8 RIP-R~4P W / A _ ,
D PATOR PAD - 426.,1 }9 ~ 8'Wx9'b W W W W W W W W + r+ W W W W W W W W W
/ LF 1 " RCPj U~ FLLTER FABR~. ~ ~ C Ill 0 0.39X W W W W W W W W W W r+++++ r++ + + + + + + +
' LINDERUN~ _ _ 28,8- , W W W W W W W W W W W ++++r+r+
~ i - ; _ - _ W W W W W W W W W W W r++++++++++ W W W W W W W W W++;+a+r 6 t1YMF AL AR LI AN
; • " t ~ ' C ETE \ W W W W W W W W W
~ ~ ; % IS ~ ~ i ~ W W W W W W W W W 25 5CI U P G 5 ' W ~ W W W W W W W
` ~ ~ + K' W W W W W W W
0 4 , ~ ; t o + ~ ~ / W W W W W W W
t .,,.k ~ 428.5 SKIMMER / / n W W W W W W ~ W W W W W ~ 33 5A U 5 FR UU
/ W W W W W W
~ ¢ °<~o % ~ " ~ / ,1 i 1 0 0 ~ I/ W W W W W / /
,l aA + / W •Y W W W W W / i / / / W W W W W W W / / / / / / / /
o 0 0 ~ =4118.5 1 '
o / ~ _ - ~ + " \ / /
~ 427.5- - - 0
II 1 ' 60 ZIZANIA AQUATICA _
C ~ f ~ - ~ ~ ~ B 428.5 + _ _ _ ~ 30 TIIALIA UFAL6ATA 3 TNALIA D>:ALBATA ~ ~ _ _ _ 297 PONTEDERIA CORDATA
- = ~ - _ 33 SAGITTARIA LATIFOLIA
423 A3Q- . ~ 4 32 SCIRPUSPUNGENS _ _ _ _ _49_ A _ _ I0PANT~UM-VIRGATUM
_ _ - _ _ _ _ , - - SAURURIJ~ CERNUUS 45 NYMPIIAEA ODOPulTA
~ 53 IRIS VIRGINICA~"`~ `
~ - - - - ; _ _
_ ~ - ~ ~ _ ~ _ _ _ _ P TIN P I~EW
_ , _ . 435 ~ ~ i _ _ _ _ . ,
~ _ ~ 1 =10
_ _ - - _ ,
- ~ _
~ _ -
- " ti,"~ ~
- , _ ,
_ N WETLAND POND 1 VIEW ~ ~ - _ F~(TENDED DETENTIO _ , ~ ,
- ~ , -~,y
i ~ ~ _
Summary Information _ _ _ _ _ _ ,
Cornerstone Park ~
Extended Wetlantl Detention Pond 1-Lot 10 PLACE STEM /
ANi1-YnRTE1f_OfVICE~S~E ~TAL~ _ ~ Storm Qpeak Qpeak Max. Max. _ - - _ _ _ - _ - _AT 3 / - ~ NIGH MARSH ~y \ \
Frequency In Out WSEL Pond Storage _ - _ - - -10~fl-- _ _ 4,34 - - - - - - 8'~V - ~ r. his ft. ac.ft. i - _ 9~5 SF
ACONG BARRA ~ENiERUNE - _ - _ .SEE-CFLWT - 2 3.95 3.58 430.50 OF OAM Q _1.0-- _ _ - 10 5.34 5.26 430.57 0.106 432 - - ELEV 429.0
_ _ - _ _ - - 100 10.17 6.30 430.72 0.11 MAL POOL 4" DP
430 - - _ _429:00 Ft~E 8AY MICRO POOL 300 SF 300 SF
_ _ANII ~ffP- _ i
pET - Elevations ~i
428 - Basin Botton Elevation 427.5 ft. I ~ _
_ , PemTanent Pool Elevation 429.0 ft.
426 , : ~ 4~ X 4 LEE - . Crest Elevation 430.3 ft. = Top of Dam Elevation 432.0 ft. LOW MARSH ~ / ~ ~
4" GATE V C 1 RIPRAP - _ _ - _ - _ _!i~l~ _ - - _ _ _ 1300 SF ;
424 DISSIPATO _ PAD. 24 1H . _ _ ~ F~ _ _ _ _ _ Armes ~
USE FLLTER ABRIC UNDE78.1 ER 8 L x x 18 Pem~anent Pool Surface Area 2268 sq.ft. \ -
422 _ 38 -LF _1- I- _ ~ 2~ ~ - - Drainage Area 2.74 ac. 0__ 39X_SLQPE _ 2-M FI10T1NG l
Impervious Area 0.99 ac. v
420 _ /
Other Parameters N ~ ~ v? N °p °i q~~: °qqp~~• Design Rainfall 1 in. runoff ~ ~ PLANTI G A P _ _ _
~ ~ N N N N N N N ~ ~ ~ ~ Drawdown Device Skimmer , _ - _ _ _ ~ =~o _ _
Min. Drawdown Tlme Req'd. 46 hrs.
Min. Detention Volume Req'd. 0.084 ac.ft.
10+40 10+80 10+80 Detention Volume Provided 0.086 ac.ft.
10+00 10+20 NO1~:
Lot 10 Extended Wetlands -Pond 1 THE CONTRACTOR SFIALL SEED AND MULCH ALL BARE AREAS IXCEPT IN AREAS WHERE PLANT MATERIAL IS
NOTE: Skimmer to Use: 2" Skimmer wl 2' head n D Volume to be Drained = 3,652 cu. ft. PLACED AFTER C(MISTRIJCTI~V rs COMPLETI~ SILT FENCE
RISER BARREL PROFILE VIEW 1, 12 ~ RCP SHALL BE TONGUE AND GROOVE W CONFlNE " ~ , , Draw Down Time = 2 days SHOULD REXINN IN PLACE UNlll GRASS HAS BECOME
=10 HORIZ 0 RING GASKET MEETING ASTM C-443 LATEST AND riff a - 1.3 s . in. 1 0 ce Are - fi q VENT ESTABLISHED.
1 "=5' VERT JOINT OF ASTM-C-361 LATEST. Orifice Diameter = 1.4a inches SCREEN ACCESSIBLE THROUGH
DC?OR
NorE: PLANT LIST-
SKIMMER MAY VARY QUA SPECIES _ Common Name____~_ Spacin 3 MAY VARY
A A SLIGHTLYFROM Y FROM
ILLUSTRATION AT?oN 5 Canna flaccida Golden Canna 3' o.c.
_ ~'4 REBAR 12 O.C. EACH WAY 46 Hymenocallis caroliniana Spider Lily 18" o.c.
a- PRESSURE RELIEF a o 0 53 Iris virginica Blue Flag Iris 18" o.c.
CV HOLES I/2" DIA, a m ° ° O
p ~ PLAN VIEW o o TOP LS 10 GAGE CORRUGATED ~ . 46 Juncus biflorus Shore Rush 2' o.c. -FLOAT
N o METAL OR 1/8" STEEL PLATE. N PRESSURE RELIEF NOLES MAY 4 Myrica cerifera Wax Myrtle 5' o.c.
p 8E OMfTrED, iF ENDS OF 45 Nymphaea odorata Fragrant Wafer Lily 3' o.c.
`FInLr o~~in+~LE n+E~roP Is BARREL OUTLET END CONNECTION ECT~oN 18 Panicum vi atum Switch Grass 3' o.c. r9
o ATTACHED. PEE 1/2" PREFORMED JOINT ' ~ D FILLER, 12" wroE TO OUTLET PIPE OR RISER i RISER ~ BARREL PIPE LONGER THAN SHO 297 Pontederia corclata Pickerel Weed 1$" o.c.
o cnrAxx a i1 GAGE NOT INCLUDED WITH SKIMMER 110 Sa ittaria latifolia Broadleaf Arrowhead 18" o.c.
~ CORRIIGAIED METAL PIPE '~.P''~ a ' ~j OR fA61MG0ED FROM f/8" , O 9 SUPPLIED BY USER
' 18" STEEL PIAIE. N p 1ACKWEID ~ ~ ' 136 Saururus Cemuus Lizards Tail 2 o.c.
r ALL AROUND f , 87 Scirpus pungens Three-Square Bulrush 18" o.c. ,~~tiIIRI~,r~~®~,~
Q I. TFE C111~ER MUST ~ FlRMLY 8n FAS'iENED i0 THE TOP OF FLEXIBLE JOINT 42 Thalia dealbata Powde Thalia 2 o.c.
, Z ~ 2000 PSF MIN. ~ - 1. SUPPORT EARS' ARE ATTACHED ry I~yr'~.~ .„~,a.A. ~;r u ww'~~~sI(~
~ Er STRAPS LTOLTED ro roP ELEVATION SECTION BEARING CAPACITY i Wild Rice 1$ o.c. ~ ~ 60 Zlzarna aquatca ~ 4 N ~
~ ~ BENEATH COLLAR ~ ~`6 x 12" - a ,~;L A y
I-- PACER 9AR /8 REENR I (1YP) l~~`1~ ~ ~ r tl ~ ~ n y 'S' " Fed ~~~r,.. y ~ W '
U? y ~Y,'~' ~ e~ ~a) ,a
f]
p SECTION A-A SKIMMER DETAIL a ~realala I
a - ANTI-SEEP COLLAR AAITI vneTrv nnnnr R~ r e
AIY11"YVISIGA ULMoL
NTS o NTS 1
CD L420TY n Date B Designer Scale Sheet No.
o Revlsio 0 EVISION TO DWO PONDS & LEVEL SPREADERS 5/20/02 JAC W&R AS NOTED WITHERS R"ENEL I
Drawn By Date CORNERSTONE PARK * OF RALEIGH REVISIONS 6106102 JAC
o - JAC 11/28/01 EXTENDED DE 0 DETENTION WETLAND POND I LOT 10 ENGINEERS I PLANNERS I SURVEYORS 13
CD Checked By Job No. 111 MacKenan Drive Cary, North Carolina 27511 tel: [phone] fax: [phone] www.withersrovenal.com
' KLJ 200147

~ _ __,_~~,_m.~..___.____--
~ ; ~ - ~
~ , ~ _ , V ~ , . _ ~`r+.-,mow ,,,,,-,~rW""'-' V ~ -
~A ~ • V~~ , ~ V \ UNC~NS___ _ _ A, \ ~ ~ 109 IRIS VIRGINICA 8 ?C1Rf'U5 P
~ ~ ~ ~ _ - _ A \ ~
53 aAURURUS CFRNUUa . 20 PAWIC,Uf~ ~/fRGATUM
,•,A ~ ~ ~ ~ , 66 JUNCOS BIFLORIIS _ _ ~ ---,n_._.~__,__ _ 23 SAURURUS CERNUUS
~ A~ \,A ~ ~ \ , ~ , ~ ~ V A A \ ~ V ~ ~ , 23 SAGIT1~RiA~1~OLIA ~ ~ ~ -
~ A ~ ~ ~ ~ ~ A ~ \ ~ _ ~ 3 SAURiJRUS CF~.NfJ~1S _ ~ $ .
~ ~ A ~ ~ _ v; \ _ _ ~
~ / , ~ . \ ~ , y ` ` ~ ~ ~ ~ A ~ PELTANDRA VIRGINICA
A ~ „ ~ A V ~ . ~ ~ 7 SCIRPUS PUNGENS ,
_ H , A.._~_,-~~ ~
~ ~ C89 ~ i VA\ V ~ , + ~ ~ < az ~ A ~ ~ \ V ~ ~ , »i
• ~z CU1SS B RIP-RAP ~ \ ~ ~ ~ ' ` ~ , _ ~ s W _ ;
DISSIPATOR PAD ~ _ - _ _ _ ~ ~ \ _ \ ~ _W.Ti...su^.+_:; r~m.-17K. .vv ` 11 1 1 ~ 1 ~ ~ • ;r ~ , N ~ V ~ ~ ~ , ~ ~ 52 JUNCOS 81FlORUS
35'Lx12'Wx12'b ~ _ _ A A , ~~~,yv~,. 38..1 CONCRETE , , , _ - • ~ - ~ ~ ~ ,r--L__ ~ ~ ~ _ V A ~ ~ V` \ \ ~ V _ ` 41 SAGITiARIA lATIFOLIA
USE FILTER FABRIC ~ , RISER w/TRA~I _ . UNDERLINER ~ ~ ~ _ ~ v V ~ ~ ~ ~ ~ ~ _ _ 26 ZIZANIA AQUATICA
V v'~~~, ' ~ ~ RACK ~ _ - _ ~ ~ V ~ ~ _ ~ ~ ~ _ 80 PONTEDERIA CORDATA
_ _ _ , , - - __._r..------ ~ \ \ ~-RNU~ ~ , _ _ _ 41 NYMPIIAEA ODORATA ~ ~ _ _ _
- ~ _ ~ _ 58 SAGITTARIA IATIFOLIA _
. \ _ _ - - _ ~ ; _ ~ _ _ ~ - - y,, i ~ ~ ~ - - ~ ~ - _ ~ , 43 PONTEDERIA CORDATA PLANTING -PLAN VI _ _
_ , 25 SAURURUS CERNUUS » \ (9 CANNA FkRCCIDA ~ ~ 1 =20
10 - 00 ~ \ ~ . ~ ; _ . , . ~ ~ ~ ; 49.5 i G~- 10 ?0 , \ , , ~G . ~ _ 45 PELTANDRA VIRGINICA 38 THALIA DEALBATA
V.. p ~ U ~ ~ ' ~ ~ / ~ o ~ 48.5 _ , ~
~ u v _ o ~ , , -
408.5 + ~ _ ~ ~ o o ° ' , ~ ~ _ + o ~ _ _ p \ _ _ - ~ _ , - ~ - -
~ + 408.5 o ~ , + _ . 409:5-- , 12 FES 401 . • • _ _ - - -
INV 40.1,5 _ . + _ t, _ - p~~ , ~ ~ _ _ - _ _ _ lr
_ _ _ _ . -
V ~ _ _ _
l~ - ~ ~ ~ 48 tF 18 RCP, ~ _ - CLASS IIl 0 4.02X ~ ~ _ . \ _ - ~ \ ~
. . _ . CLASS GRIP-RAP _ \ - - V
~ DISSIPATOR PAO . _ ~ , HIGH MARS7!
\ ~ ~ _ \ - - , ~ , _ - FORE BAY 1,314 SF
_ USE flLTER FABRIC - r , , UNDERLINER - , , ~ LOW MARSH ~ ~ i
SKIMMER ,i ~,V ,v
- . . ~ i
. • `yv v ~ ~ y~' V \ ~
~ ~ A\ ~
• , ~r--- _ _ _ v\, _ \ ~ t.
~ ' 9~ ~ ~ - -
` ~ ~ ~ ~ ~ ~ _
~ d ~ ~ ~ A ~y~ ,y ~ _ - \ _ ~ _ PLANTING AREAS PLAN E1N ~ Vf
~ ' ~ ~ O ~ , ~ _ _ _ _ _ M
~ ~ ~ .J t - 1=20
~ ~ /
~
~ -
~ ~ \ NTION WETLAND POND 2 PLAN VIEW L DETE \ , ~ a ~
V ~ ~ ` ~ ~
~ ~ ~ PLANT LIST
QUA SPECIES Common Name S acin
414 I ~ N~1E1:'L _ - - nn .c. 19 Canna flaccida Golden Ca a 3 0
~ - _ _VORTEX SEE DET L1 Summary Information } - 109 Iris virginica Blue Flag Iris 18" o.c.
411 _ - - - - ~ Cornerstone Park i OF E1+411.0 _ _ _ . - E_ xtended Wetland Detention Pond 2 -Lot 10
- Storm Qpeak Qpeak Mex. Max. 118 Juncos biflorus Shore Rush 2' o.c.
410 f'CI ~ F uenc In Out WSEI Pond S 6 Myrica cerifera Wax Myrtle 5' o.c.
- - l! roq Y - _ pRppO _ ~qpE _ 1C1 ELEV 407.5) r. cfs cf5 - ft_ ec.ft. 41 Nymphaea odorata Fragrant Wafer Lily 3' o.c.
408 _ - _ -S1EM--. _ ~ NORMAL POOL 2 5.68 4.17 410.70 0.183 _ _ _ ~tf 3 - X09 - 20 Panicum vi atom Switch Grass 3' o.c.
10 7.31 6.98 . 1 0.195 r9
408 - - - 100 9.89 9.84 410.91 0.206 4 100 Peltandra vinginica Arrow Arum 18" o.c.
- _ _ 4x4 ' _ - 123 Pontederia cordata Pickerel Weed 18" o.c.
404 _ _ - _ - - _ _ ~ , 122 Sagittaria latifolia Broadleaf Arrowhead 18" o.c.
1 - - - - - Elevations _ _ - - _ L'ONCRfTE Basin Balton Elevation 407.5 ft. _ 112 Saururus Cemuus Lizard's Tail 2' o.c.
_ _ - . 402 _ _ _ _ ..4~ Permanent Pool Elevation 409.0 ft. 65 Scirpus pungens Three-Square Bulrush 18" o.c.
_ - Crest Elevation ~
- ANaIOR AT Top of Dam Elevation 411 ft. 38 Thalia dealbata Powdery Thalia 2' o.c.
26 Zizania aquatics Wild Rice 18" o.c.
_ 398 _ _ CLASS 1 R _ _ _ _ _ _ _ - _ - _ - - - reas
_SIPAIpR PAD.- 4`.. HICK . -48_.LF _18_ - QCP -Q_ 4.O2X. _ _ _ _ Pem>anent Pool Surface Area 2885 sq.ft.
FABRIC NDERLINER - _ Area 3.56 ac. USE flLTER - _ - Drainage 398 - -
. _ Impervious Area 1.41 ac.
394 _ _ _ _ _ _ - - - - r - - _ - _ Other Parameters
Design Rainfall 1 in. runoff
Drawdown Device Skimmer
o ~ of o 0 0 0 ~o ry °j Min. Drawdown Time Req'd. 48 hrs. ~ N
o, ~ g Min. Detention Voume Req d. 0.121 ac.ft. M M
Detention Voume Provided 0.121 ac.ft.
10+00 10+20 10+80 11+00
RISER DARREL EAY -PROFILE VIEW
~ =~o' HoRlz VENT
1 "-5' VERT SCREEN ACCESSIBLE THROUGH
DOOR
NOTE;
A A i, 24"~ RCP SHALL BE TONGUE AND GR00~ E AN GROOVE W CONFlNED '0' RING GASKET NOTE: D
MEETING ASTM C-443 LATEST ANO JOINT - - ~4 REBAR 12" ?T ANO JOINT OF ASTM-C-361 UITEST. SKIMMER MAY VARY
O.C. EACH WAY 2. KEEP 4 GATE VALVE CLOSED UNLESS TH 0 UNLESS THE NEED TO COMPI.EIELY DRAIN SLIGHTLYFROM
a ° ° THE POND IS NECESSARY FOR i~IAINTENAIV PRESSURE RELIEF 7R MAINTENANCE PURPOSES. ILLUSTRATION
~ H01ES 1/1° DIA. ° e ° O
d . L' i' F?LAN VIEW ° e TDP ~ 1D GAOE coRRUCATm
cV o METH. OR 1/8' STEEL PUTS , ~ PRESSURE RELIEF NOTES MAY 1.'•;•,
N E+E OMITTED, IF ENDS OF O CORRUCAIIQNS ARE LEFT BARREL FLOAT
~ WELDED (il'P) FULLY OPEN WHEN THE TOP IS PIPE AnACHEO. 1/2" PREFORMED JOINT
o DIAMETER " NOTE. ~ FILLER, 12 WIDE
o THE CONiRICT~ SHALL SEID AND CYUNOER IS 12 GAGE CORRUG4TED METH. PIPE ,;;•r, ~ AREAS IXCEPT IN AREAS p 'HALL SEID MID MULCH ALL DARE AREAS WHERE PLANT MATERIAL IS
OR FABRKi1TED FROM r/e• ° ~ PUKED AFTER CONSTRUCTION IS l V IS COMPLETE SILT FENCE OUTLET END; CONNECTfON STRUCTKKaW ,~d~,~~~
N - 5ffE1 PULE i N TACkwELD y' ~ SHOULD REiWUN IN PUKE LNVilil.. GI O AL1 AROUND .4ye.,c 1 PLACE lNVlil. GRASS HAS t~COME TO OUTLET PIPE OR RISER
1 " NOTES; BARREL PIPE LONGER THAN SHOWN :~:w ~ ' , ~
Q 1. iNE C1tIN0ER MUST 8f FlRMLY FASTENED TO THE TOP OF NOT INCLUDED WITH SKIMMER ' 'i'
' THE RLSfR ? 2000 PSF MIN. SUPPLIED BY USER m :,I_ ,,I r'
~ 36'- 1. SUPPORT 8485 ARE ATTACHED er sTRAPS BOLTED To rDP SECTION BEARING CAPACITY Lot 10 Extended Wetlands - P i Wetlands -Pond 2 ~ 1,.,~~
m ~ R1~• ELEVATION BENEATH COLLAR p /g Shimmer to Use. 2 S 2" Skimmer wl 2" head ;~;t., ,r , , ~ pine - 5 256 cu. ft. ° I
§PACERIB,4R /e RES4R Volume to beDrained = ui Draw Down Time = d FLEXIBLE JOINT r ~ n
a Orifice Area = e Area = 2.35 s . in. ~~a°'~' ~
Q ameter = 1.73 inches
p SF_CTION A-A Orifice Diameter= EL ANTI-SEEP COLLAR SKIMMER DETAIL
ANTI-VORTEX DEVICE i ~ N.T.S
~ NTS
o NIS I - '
-
o No. Revision Date 8 Designer Scale o Sheet No.
0 1 REVISION TO DWQ PONDS & LEVEL SPREADERS 5/20/02 JAC W&R AS NOTED CORNERSTONE PARK WITHERS R"ENEL DETENTION WETLAND POND 2 LOT 10 ENGINEERS I PLANNERS I SURVEYORS 14
2 CITY OF RALEIGH REVISIONS 6106102 JAC Drown By Date o JAC 8/01/01 MUENDED DETED
0 C) - Checked By Job No. RALEIGH, NORTH CAROLINA
111 MocKenan Drive Cary, North Carolina 27511 tel: [phone] fax: [phone] www.withersrovenel.com
U KLJ 200147

19 CANNA FIACCIDA
42 ZIZANIA AQUATICA 3 I PON"fEQERIA CORDATA
104 JUNCOS BIFLORUS I 120 SAGfiTARIA IATIfOLIA
I 03 PONTEDERIA CORDATA 81 SAURURUS CERNUUS
I 0 CANNA FLACCfDA 48 SAURURUS CERNUUS i ~ ,
r 7 CANNA FLACCIDA !r ~ , 46 NYMPt1AEA ODORATA ~ -
- 23 SAURURUS CERNUUS ; . y ~ ~ ~ ; ~ 69 PONTEDERIA CORDATA , ~ ~ _
, - 83 TIIALIA DEAI.BATA ~ ~ ~ _ ~ ~ ~ 143 71ZANIA gQUa(~CA
IQA - - ;r _ ~ _ ~ ',I0"~CJR~U~UN ENS
i ~ ~ , 0 JUr1CUQ$tFLORI;IS I ~ ~ 2 PANT IRGAT , ' r -
, , _ 1 ~l~AU(~UR~~raI~NUUS- ; ~ ; 1 ly, ~ . ~ ~ i _ ,r i ~ , ; 7J 1'ON~ED~RIA'eORDATA _ _ _ - !I I ~ ~ , . ~ ~ ~ , j /
- i ~ I I ! ~ _ ~ _ I 1 ~ . " -
NYMPt1AEA 0 RA ~ _ 1,~>~~ , , - 2~ DO TA I I , • ~ , i r ; , 1 ,
i~~a~T~A~~ Ta~~rA ~ 11 ~ 1,1,,, ~1 ;~11 ' ; ; I,'~,,; _ _ , ' ,.r 1 j I IIII I ~I I 1 • ? • J1J. :`t I I .-l / ~ ~ ~ i I Ill ~ III I • ? • . J.'t1;: I ~ /i i
- + I 1 1 . ` Ir ,IL ji 1 • ? ? • . • ? • ~
7I 1 it f 1 1 1 • • ? ? ? • . ? • • ? • 1 i ~
" ' 31 PANICUM VI 24l CONCRETE' 1M VI " ~ a I • ? ? • ? • ?
RISER W 84 9GIRPUS U N U5 U N • I' r ? • . • . . . . ~ ? 1
RACK ~ ~ _ ~ ~ . CLASS 'B' RfPr-RAP _ _ ~ ~ 1 ~ ? ~ ~ . ; If
DISSIPA10R SAD ,#U'LxA'WirtSb . . . . . 11 - ; _ IRGATUM V 1 ` 1 _ 1, ~ 1
, USE Al1ER FABRIC _ ' ' I;,~,~rll ~1~;~;l~,I~,II ~ I SI'UNGEN5
~ ~ LjNDERLINIR - w , f 1 (.f I1lll1ll lII1II II !!l~ !1I lI1 jalllfllllll flrf..fllfllll _ ! ! /
_ 0 - _ _ ~ ; _ i . _ _ _ _
- - - - - _ , SMH , . ~ ~ - _ _ ~ _ - , , ~ _ - - "w - X90.0 ~ ~
~ _ _ ~ ~ - ~ _ us BIFLa us _ _ SAGr~iARiA LAT~F _ 73 JUNC R 120 JUNGUS BIFLORUS
394-_- ~ _ " o ~ - o ~ ~ - - - ; o - - o _ _ - 44 SAURURUS GERNUUS
0° , o - - - . _ _ _ - - - ~ _ ~ ~ _ _ ~ _ _ 389.0 _ 5 t PONTEDERIA CORDA7A I S CANNA ft11CCtDA _ _ _ _ _ G -PLAN VIEW- _ _ _ 34 SAGt~ARtA LATtFOLIA
39L ~ _ - - , ~ - - _ ~
CLASS 'B' RIP-RAP ` DISSIPATOR PAD _ _ oa 24 SAGIIIARIA LATIFOCIA / } '20
30" FES X LxX'WxXb ~ . ~ \ a
INV 386. , - USE FlLTER FABRIC + ~ 0
UNDERLINER + ~p SKI 387.5 I I
i + 387.5 + ~ „ ~
390 0 30 LF 3~ RCR _ 390.0 390.0 1 ~ - ; _ I , _ i~ / '
CLASS fli 0 XX _ ~ ~ ~ ~ j/~ ~ ~ - ~ ~ ~ -
- _ - ~ ~ r - ~ ~ ~ _ ~ .r .
_ _ ! ~ - ~ ~ ~ - - ~ i i / A / ~ A A
\ ~ _ _ - - - _ _ - HIGH. MARSH ~ _ _ - - ~
_ _ _ _ - = - - , ~ w ~ ~ ' ~ i r r . i /
- - . _ _ _ , _ _ _ ~ i _ ~
_ _ - ~ r i i ~ . ~ ~ ~ ~ ~ ' ~h1 i ' ~ i -
- h~ _ r", _ ~ i _ _ ~ , i
- , i - r ~ ~
r - , - -..,.a,...,...,
M
i L~I/ 111/1f1.7~1 ~ 2 270 SF
FORE Y
~ ~ r MACRO POpL / 860 S 815 SF /y ~
i _ -
-ENDED DETENTION WETIAWD POND 1 -PLAN-VIEW ~ EXT i~ " ~ i
1=20 / / i _

_ _
_ _ -VORTEX D CE SEE DET _ _
396 - _ ~ _ MIN _
_ " ~ , ~ - _ _ N VIEW.......... i S - PLA _
- - i CONNEC TO RISER _ TOP OF EL-394.0 _ . 394 _ _ - ..4 _ DIP TOE 390.5)_.. _ _ ~ ~ i 1 "=20'
PRO GRME - -
392 _ - _ _ _ _ _ ONG BARREL C NE 1
_ _ _ _ _ - . - - - - _ _ Q _
390 - PLANT LIST
ALONG BAR EL CENTERLINE _ _~OIIQM _~1,SIN=3$8,4 _ - _N -388.0
I _ , ~ ~ _ NOTE T n N me S acin QUA SPECIES Commo a ___p____~
388 - ~ ~ • _ P~ ORCED - _ 1.1HE CONTRACTOR SFWLL SEED AND MULCH All BARE _ -
_ _ - _ _ CONCRETE MAN OLE (RISER ARFAS IXCLPT IN AREAS WHERE PLANT MAlERb4l IS 72 Canna flaccida Golden Canna 3' o.c.
_ _ _ _ ~S DETAILS- _ _ _ _ _ _ - 386 C 1 PLACED AFTER CONSTRUCTION IS COMPLETI~ 356 Juncus biflorus Shore Rush 2' o.c.
NOTE _ 8 Mynca cerifera Wax Myrtle 5' o.c.
- PLAC STEM SUPPO 2 SiIT FENCE SHOULD REMWN IN PLACE UNIT GRASS HAS ......USE F1LT FABRIC... NER - _ _ _ _ - - - - - 384 - AT FROM 6U(SE " BECOME ESTABLISHED. 68 N mphaea odorata Fragrant Wafer Lily 3' o.c.
- 4x4 _ TEE- _ _ _ _ _ - 30._LF - -RCI~ CLASS... _~--t:33X St Y
CONC FOOTING _~y _ _A T _ _ 3. USE C-350, NORTH AMERICAN GREEN, EROSION CONTROL. 58 Panicum virgatum Switch Grass 3' o.c.
382 _ _ _ _ ~-X X 12 1NT0 ETE F()OTI MAT ON FACE OF DAM SLOPE FROM TOP OF &iNK TO 423 Pontederia cordata Pickerel Weed 18" o.c.
_ _ _ _ _ _ _ _2~ _ - . _ _ - CREST. 4 NRS GATE VALVE 308 Sagittaria latifolia Broadleaf Arrowhead 18" o.c.
380 213 Saururus Cemuus Lizard's Tail 2' o.c.
124 Scirpus pungens Three-Square Bulrush 18" o.c.
o ao co ~ o, ~ o
r; Summary Information 83 Thalia dealbata Powdery Thalia 2' o.c.
t:omerstone Park 203 Zizania aquatics Wild Rice 18" o.c.
Extended Wetland Detention Pond 3 -Lot lion Pond 3 -Lot 10 _
Storm Qpeak Apes ik Qpeak _ Max. Max.
10+20 10+40 10+60 10+80 Frequency In Oui to+oo NOTE. Qut WSEL Pond Storage
1. 48 RCP SHAH BE TONGUE AND GROOVE W CONFINED 'D' RING GASKET r. ~ ~ ~ ft. ac.ft.
RISER BARREL BAY 2- PROFILE VIEW MEEiiNG ASTM C-443 LATEST AND JOINT OF ASTM-C-361 LATEST 2 12.47 4.6; 7 4.63 382.36 0.346 8 10.87 392.54 0.393
1"=10' HORIZ " ~N 10 1s.os 1os~ " 2. KEEP 4 GATE VALVE' CLOSED UNLESS THE NEED TO COMPLETELY D 4 18.11 392.72 0.438
1 =5 VERT 100 22.24 18.1 THE POND IS NECESSARY FOR MAINTENANCE PURPOSES.
Elevations
A e A Basin Batton Elevation tton Elevation 389.0 ft. VENT
Permanent Pool Elevatioi nt Pool Elevation 390.5 ft. SCREEN ACCESSIBLE THROUGH
- ~4 REBAR 12" Crest Elevation Ovation 392.1 ft. DOOR
O.C. EACH WAY Top of Darn Elevation g o ~rn Elevation 394.0 ft- NOTE:
tl PRESSURE RELIEF e o 0 N HOLES I/2" DIA o o o Areas SKIMMER MAY VARY
o •h,;` ,I Permanent Pool Surface ant Pool Surface Area 6285 sq.tt. SLIGHTLY FROM
PLAN VIEW o e roP Is to ~ caRRUCarED O o METAL OR 1/8" srEEL PutE. ~.M• N Drainage Area Area 7.36 ac. ILLUSTRATION
PRESSURE RELIEF HOLES MAY • ~ o aE oMmED, ~ ENDS of Impervious Area us Area 3.39 ac.
° WELDED ()YP) ~LroP~w~ ~ TOP Is BARREL
n AnACHED• PIPE 1 2" PREFORMED J01NT a DIAMETER ~ Other Parameters ~ FILLER, 12" WIDE
o Design Rainfall cnINDER Is 12 GAGE , ' lainfall 1 in. runoff FLOAT
coRRUDArED MEra PIPE e ~ Drawdown Device OR FABRICAffD FROM 1/8' ~j • m Device Skimmer q"rd4pGti'n 9t?6
Min. Drawdown Time Rey 78" STEEL PUiE• v ; N Hdown Time Req d. 48 hrs. ff / 1 ,a`~titil~9 UY!'~I~ fd~'~>,
TAC~wEw Min. Detention Volume R ~ ALL AROUND , ;ntion Volume Regd. 0.285 ac.ft. „s,N~°•« "%b OUTLET END; CONNECTION ~w ° ~ya~ k.~,p n~
~ NorES: _ Detention Volume Provid p rHE cruNDER MUST 8E FIRMLY g'• ~ Valume Provided 0.285 ac.tt. - TO OUTLET PIPE OR RISER R THAN HOWN ~ ~ yti., o . ` BARREL PIPE LONGS S ~ ~ ~I ~ A.
~ _ FASrENEO ro n~E roP of z _ rHE 2000 PSF MIN. ~E. ~ NOT INCLUDED WITH SKIMMER t
N - +s' s. er sPO~ear~mEm ~ D BEARING CAPACITY ~~d ~ „ SUPPLIED BY USER `
Q of msER. ELEVATION SECTION Lot 10 Extended Wetlands m BENEATH COLLAR rn s x R2~ /s REBAR Skimmer to Use: 3 :ended Wetlands -Pond 3 ~'~~°4.~`~ ~~„=W~ " m 12.5' head `»qm~~ N~®,"' Use: 3 Ski mer w Yfi .a„. , , ~ q~ ,
F- PACE _ _ Vdwne to be Drained ~e Drained = 12,413 cu. tt. °D° ~I~ ~
ul Draw Down Time = - FLEXIBLE JOINT °P~aas, ~ Time - 2 da 15
in r0 Orifice Area = Orifice Area = 4.89 sq. in. ~ ~ r
Z SECTION A-A - Orifice Diameter= a ANTI SEEP COLI~4R lice Diameter= 2.49 inches SKIMMER DETAIL ~
ANTI-VORTEX DEVICE . ~ N.T.S
a .I7[~
NTS c~
o N0. Revision Date E 3Y_ Scale Sheet No.
- W&R AS NOTED C) i REVISION TO DWO PONDS & LEVEL SPREADERS 5/20/02 JAC WITHERS RAVENEL DETENTION WETLAND POND 3 LOT 10 ENGINEERS I PLANNERS I SURVEYORS 15
CORNERSTONE PARK 2 CITY OF RALEIGH REVISIONS 6/06102 JAC Drawn By
CBP Dote 1/24/02 EXTENDED DET
o - _ Checked By Job No. NORTH CAROLINA o RALEIGH, 111 MacKenan Drive Cary, North Carolina 27511 tel: [phone] fax: [phone] www.withersrovenel.com Ill
KLJ 200147