20001530 Ver 1_Site Plan_20020324

S-84-2000
~ INDEX OF SHEETS
OVERALL STORM WATER MANAGEMENT POND PUN SHT 1
- - ~ SITE -
EXTENDED DRY DETENTION POND LOT 1 SHT 2
EXTENDED DRY DETENTION POND LOT 2 SHT 3
-N- LEVEL SPREADER LOT 6 de LOT 8 SHT 4
EXTENDED DEIEN110N WETLAND POND 2 LOT 7 SHT 6
~ GMENT PONDS ENDED Dt7ENTlON WETLAND POND 1 LOT 7 SHT 5
STORM WATER MAI G EXTENDED DETENTION WETL4ND POND 3 LOT 7 SHT 7
EXPENDED DETENTION WETLAND POND 4 LOT 7 SHT 8
RALEIGH, ~1. VICINITY MAP l I _ ~f ~ EMENDED DETENTION WETL4ND POND 5 LOT 7 SHT 9
EXTENDED DRY DE7ENTi0N POND LOT 8 SHT 10
EXTENDED DETENTION WETLAND POND LOT 9 SHT it
EXTENDED DETEN110N WERAND POND 1 LOT f0 SHT 12
EXTENDED DETEN110N WETLAND POND 2 LOT 10 SHT 13
SCALES N.T.S .1 LOT 14 EXTENDED DETENTION WETLAND POND 3 LOT 10 SHT 14
LOT 11 '--LOT 13 1 RENSION i0 DNq PONDS k LEVfl SPFEADERS 5/20/01 JAC
N.T.S Z--_
~ I I L0/ ~2
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nr o oaiawrvoR ~rosc wR sr o~ ar rase I ~ ~~r~~1~~
,vo same ~c ~rn~a~ N afs nwx s inR raewe roR m¦mo nr LOT 10 ~ LOT 8
~n mx xaus rwca ro Nn aF nos ooratnucnau. I ~ LOT 1 ~
ewe ro xmrr eom an arPwmons N ,awe a ~~rie ~ ~?i'
Cpp7RUt.71p1 AL I~SIi N DE bA1YSF ~ IO~MV iM.[ ~ ipl~~ ~~~Ct RLL711ES IOf /ALi'~
i ~
HM11[ A OILL !At lBOYL A QOMBIIEMI H.4Q NNE i;
~mn Pt~ws a nr ar ,wr amor xannav a an a iwax LOT 7 2
swrawas wu ra~,~.r w ~ naw wn~r Marc LOl L'
N A[ p1Y OF IMiF7671 _
~ ~
LOT
i ii~~~
i %P
LOT 6 ~j ~~V
i / LOT 5 ~
i~~O`•'~
i,~`
j
LOT 4 LOT 3
i
i~ i
~ LECaEND ~
DESCRIPTION EXISTING PROPOSED ~NQER CHURCH ROAD (SR 1647)
~ 2' CONTOUR INTERVAL - -
~1~
10' CONTOUR INTERVAL - gar 2 a*
a PROPERTY UNE - - - - - - - -
",ihNDS UP
~ ROADWAY CENTERLINE - -
N RIGHT OF WAY LIMITS - - - - - - - - p~p~p~~
OWNER
EASEMENT LINE PIIGr/V~L/ BY
CURB & GUTTER
SANITARY SEWER FACILITIES
STORM SEWER FACILITIES ~ W I T H E R S RA = WgTERLINE - ~ ~AV E N E L HIGHWAY 70, L.L.C.
3209 GRESHAM LAKE ROAD
o FIRE HYDRANT ASSEMBLY a~ ENGINEERS I PLANNERS 15 U R S U R V E Y O R S SUITE 158-160
g FENCING STRUCTURE -o-o- 111 MacKenan Drive RALEIGH, NORTH CAROLINA 27615
WOODSLINE ~YYW`n NSA Carv. North Carolina 27511
WATERWAYS - - - NSA I I tel: [phone] fax: [phone] s SILT FENCING df--~E-m -X I www.with ersraveneLcom LIo - -467-6008
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NOTE;
THE OPERATION AND MAINTENANCE
At>~tEEMENT EXECUTED 8Y 1HE OWI~R SHALL BE CONSIDERED PART OF 1HE S10RM WATER
I I I I I I I I I I i I I I I MANAGEMENT PLAN. ALL DEVICES HAVE
BEEN DESIGNED lO REMOVE 85Z TOTAL
SUSPENDED SOLIDS (iSS) IN ACCORDANCE
t 1.m, .rl L:!: L l i:1.. ,,°l, ~ Cap, f~t . r1_ fir... ,..1_.. .Ll... I E h, Ll. L.,_ WI1H THE MOST RECEWT VERSION OF NCDENR
I I I I i r d hI t ~I ` I i 1 STORMWATER BESt MANAGEMENT PRACTICE
1I YY ~ y , MANUAL
1.. 1. i.l ~ ~ ~ 401 WATER g1AlIlY CERI1FlCAliON AND
ADDITIONAL CONDI110NS AND NEUSE RIVER
STONE r 8Uf FER RULES, SEE DWq PRO~CT X01330
_ t 1 do ,x'001530.
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r v~ r.. - ( ~ , ~ _ 1 ~ ~ /
s.. ~ ~ / / ~ ~ ' , _ 1 ~ DRAINAGE BASIN
...~;~r-~-- - / / ~ / / DELINEATION
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n i M , i / 1 inch ~ 150 it.
E GDN
Sheet No.
Nt MI Designer Scale S N0. RevIsion W&R 1" - 150' S 1 REVISION TO DWQ PONDS & LEVEL SPREer Drawn By Date CORNERSTONE PARK WITHERS R"ENEL ORM WATER MANAGEMENT POND PLAN ENGINEERS I PLANNERS I SURVEYORS
f JAC 11/28/01 1 OV, E.,RALL STORM
g Checked By Job No. KUEIGH, NORTH CAROUNA o 111 MocKenan Drive Cory, North Carolina 27511 tel: [phone] fax: [phone] www.withersrovenef.com
o; JJJ 200147
6

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394 0 ° O° O ~ ° ° ° O ° G o O _ _ ° _ _ IHE CONTRACNR SFWII. S® AND All &IRE
• AREAS w AiREAS wry PuNr ~M11ERW. ~ PIAAED AF1ER t~ONS1RUCTION IS CO~N'LEl>~ SLT FENCE
• ~ ° op° °a°~ ° o o- a a ~~ee - ° o p o ° o RE~MNV MV PUtaE UNIV. gPASS HAS -
Jr'~ tSIi1BUSF~D.
app _ _ _ _
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Summery Information
10+80 10+1!0 1 ~+00 ry~ 10+20 10+0 11+00 Comeratone Perk
10+00 Exbanded Detention Pond -Tract 1
g~ (lpeak Qpeak Max. Max. F„~„~,cy In Out WSEL Paid Storage
~ ~ ft. ac.ft.
Y - PROI~I.E VIEW SPILLWA 2 20.98 20.98 436.30 1.075
1=10' NORIZ 10 28.30 28.30 438.45 1,075
1 "=5' VERt 100 35.41 35.41 438.70 1.075
a
ao
Elevations Basin Bottom Elevation 392 ft.
Crest Elevation 398 ft.
N O ~ Top ~ Dam Elevation 401 ft.
NOTE.
poses
o REPLACE 5 OR 57 STONE AS NEEDED TI 1. S NEEDED TO ENSURE WATER Permanent Pool Surface Area 0 sq.ft.
Wlll DRAW-DOWN I•ROM POND. REb110VE REMOVE SILT FROM POND Drainage Area 4.65 ac. H C 3.38 ac. Q~~ / Impervious Area p
T WHEN It EXCEEDES 25~ OF POND DEPTH AND DEPTH ~
0 J SERI
z IS POND SHrV.I SERVE AS A TEMPORARY 2. TH TEMPORARY SEDIMENT BASIN other Parameters
UNtll. SUCH IiME THAT LOt 1 IS DEVELOP! a D IS Deslgn Rainfall 1 in. runoff 1b423 IS DEVEitOPED AN
a OFITED TO A PERMANENT WET DETENII RETR Drewdown Devioe Rock Filter ~I11E~' WET DE:TEW114N PONDe ~ 46 hrs. ~ ~
z Min. Drawdown Tema Reqd. ~y ' 0.27 ac.ft. y JAY Min. Detention Volume Req d.
N Detention Voume Provided 1.075 ac.ft.
N s 2~./oz-
Z
O a
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Sheet No.
_ WITHERS R"ENEL GED DRY DETENTION POND LOT I ENGINEERS I PLANNERS I SURVEYORS
r
° Na. I ' ' Date 8 Designer Scale Drawn By CORNERSTONE PARK Dote
S 1 REVISION 10 DWQ PONDS do LEVEL SPREADERS O 02 JAC W&R AS NOTED JAC 11 28 O1 EXTENDED 111 MacKenan Drive Cary, North Carolina 27511 tel: [phone] fax: [phone] www.withersrovenel.com
RAUIGH, NORTH CAROUNA °o Checked By Job N a
C) JJJ 200147
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_ ~ ~ ~ t Summary Inform - ~ ~mary Information
~ E, , , ~ - ~ % ~ / ~ m rstone Park lerstone Park
-----r___- _ ~ ~
Extended Dry De _ Storm ~nded Dr~_Detention Pond.-.Lot 2 _
4 , - eak Q eak Max. Max. Storm Qp p
- . ` ' Frequency nc In Out WSEL Pond Storage eque y
cfs cfs ft• _---_____.___ac.ft. r. -
12.51 9.78 438.40 0.512 T 2 VEN
~ ~ _ 438.59 0.548 SCREENACCESSIBLE THROUGH 10 21.38 17.52
_ , 439.22 0.674 DOOR 100 30.09 19.34
_ _ 3 . , NOTE:
~ ` SKIMMER MAY VARY
- ~ _ _ r r _ _ _ - - , ~ / ~ - - _ a _ L " _ ~ Elevations
_ _ ~ _ _ µ-_.__-._w rations SLIGHTLY FROM
~ ~ A E G% % R w I'iLL, ~ _ Y(,' , IMPACT r in Bottom Elevation 434.00 ft. ILLUSTRATION Bas
~ ~ _ - yy IIN EMNp EA =239 SF - Crest Elevation 438.00 ft.
. ' ~ a - ~ _ ~ , To of Dam Elevation 440.00 ft. P
~ . o 1 FLOAT
: 4 : 0 0 ~ ~ ~ ~ o \ _ = _ Areas ~Q~o 0 ~ o opOp I ~S
- ~ \ ~o o - f tlp - p : ~ ~ y Permanent Pool Surface Area 0 sq.ft.
o o ~ ~ , raina a Area 6.90 ac. OUTLET END; CONNECTION D g
- , ; 48 A NCRET~ RISER SKIMMER ? ~ , - - ~ , ~ . 4.48 ac. TO OUTLET PIPE OR RISER BARREL PIPE LONGER THAN SHOWN
i, _ I a~` Impervious Area NOT INCLUDED WITH SKIMMER
I { _ SUPPLIED BY USER
~ V 43,x.50 1 / I - _ ~
Other Parameter ' \ _ ~ __.~5 i ' T - - f _ ~ / er Parameters
/ ~ ~ _ x ~ - - - ~ r _ _ _ f ~ I Desi n Rainfall 1 in. runoff FLEXIBLE JOINT 9
_ _ ~t f i _ ~ ~ ~ i~~ _ ~.w.._ ~ _ ~ , ~ i F. ~ MANUFACTURED BY FAIRCLOTH Drawdown Device Skimmer
u - ~ " t - ~ ~ - M ~ / ' Min. Drawdown Time Req'd. 48 hrs. SKIMMER DETAIL
a 44 (F rv- _ ~ / , _ 8 RCP---~. Min. Detention Volume Req'd. 0.365 ac.ft. N.T.S
__w - - 11 i
g 2 PVC ® / ~ ; ' - - - y .1,259' _ _ _ ~ ~ I LL . Detention Volume Provided_ _________0.441 _ac.ft._ _
,u ~ i
" - - i i / / / / /ai ~~-......tee.- <
nn ((77 T 4 v.~. ~ ~ y i ~ -.T~ Lot 2 Extended Dry Detention Basin
. , l r r?. Skimmer to Use: 3" Skimmer wl Y.5" head
COI~MERCIAI EOt FILI, ` ; i'A / o = Volume to be Drained = 15,682 cu. ft.
~ F~ wErtANa.IMPACr Draw Down Time = 2 days
°LJNER wt,Nr AR~A.= ss4 sF INU 43,90 0 / / . , Orifice Area = 6.16 sq. in.
,i ~ ~ Orifice Diameter = 2.80 inches
S I' RIP-RAP CLAS i a R4~WAr FtLI.,
~ ~ wFT1AN41~iPACT 12'LxT4'Wx24"D o• r ' ~ ~ ~ ~~s'~'~ , !~R ~E"tlM+>:1 AREA ~ ,331 5f' ` , ~
USE F~lTER FABRIC' ,r k ,~yr , , ~ ~ F~' Q
UNDERLINER ~ ~ ,
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r~ ~f ~ ~ \ I ' N~IDN PQND.
DRS D E _ .u~. . j ~ _ ~ ~ N - 0 f
~
_ _ 8- _ _ _ - 442
I - . _ YR - - _ _ _ _ SKfiNMER DEVIC
442 ~ - ~ ANTI VQRTEX Q CE TOP OF M EL=440, 0 440 - _
(EE DETAIL TOP OF Q~440.0 - - -
440 _ _ - _ - SEE CHA f~E - 438 2
- SEE CHAR = _ _,---,I'-_ - 2 _ ~1-SEEP- R _1 _ 't'"
f~19E- _ _ _ _ _ - _ 438 _ _ - - SEEP. _ - _ _ (SEE OETAIL~ _ _ _ 436 _
- REINFt)RC _ -1 - i - - l8'1 SEE OEIAIL - - -1~-"- -
43s - NOTE: - ALONG--- REL ~N1~~5 _ _ -
_ MULCH ALL BARE F IN 4 THE CON1RACtOR SHALL SEID AND 434 _ CENTExU E 1 433. _
f _ - iM~- A~QNG ~~NT~R~INE - AREAS EXCEPT IN AREAS WHERE PLANT MAIERNL 434 INV 433 _ _ _ ~ _ PLACED AFTER CONSTRUCTION 1S COIIPLEIE. SILT FENCE
• _ ' ~ ; 1gNHOL~ Afi SHOULD REWVN IN PLACE UNTIL GRAS'S HAS BECOME 432 _ _ _ _ 44 12.E ~ _1D ~i 25x SkflPE S D _ _ - -~{--BE TER-TIGMT) - _ _ _ _ -GRAS (Att SEE DETAIL
- - _T~ ~ DUfSS-.111 ~ tt4~ 432 _ ~ LF _ 12' ~N6R~F, ESTABLISHED.
1. 430 - _ _
_ i 430 - - 8'L x 8'W x 8
! - t U 2,500 psi C NC ElE 428 - - _ _
CLASS 1 RAP _ - 428 ' _ - -
11SSIPATOR P 24. 1HICK - _ - 426
FILTEI~FA~ _ _ 426
rn 'o ~n N o rn ao h co
l~j of tp ~O ~ r~~ ~ ~ ~ e} ~t ~h d' ~t
N C ap ^ N ~ ~ ~ ~ M ~ rb~
O N ~ r*j ~ ~ ~ ~
10+20 10+40 10+60 10+80 10+00
10+40 10+60 10+80 10+00 10+20
BARREL -PROFILE VIEW SKIMIUER
NOTE: 1 "=10' HORIZ
~ L BE TONGUE AND GROOVE W/CONFINED Z - ROFILE VIEW 1. 18 ~ r?CP SHAL R BARREL P - RiSE , , 1 "=5' VERT
} RiNG GASKET MEETING ASTM C-443 LATEST AND M ! 0 1 =10 HORIZ
M ~ JOINT OF ASTM-C-361 LATEST, y 1 =5 VERT
c~
z
w
Z ,~4 REBAR 12'
z A o A , O.C. EACH WAY LU o 0
LU 'r. t Z o 0 W ~
> iOP IS 10 GAGE CORRUGATED ~ ° ~ PUIE. N 2' PVC FEMALE ADAPTER (TYP) 2' INSERT FITTING "
PRESSURE RELIEF ~ o METAL QR 1/8~ STEEL. ' 'r; dJ HOLES I/2' DIA. PRESSURE REUff HOLES MAY 12x2 BUSHING
U) BE OMITTED, 6 EhbS OF " IN FROM 12 PVC COUPLING SKIt~11ER
w PLAN VIEW WELDED ) oP~wL~ i~ rop Ls BARREL ATTACHED. PIPE i 2" PREFORMED JOINT
R ~ ~ 4U/ETE FILLER, 12" WiDE 12' PVC PIPE
Ci'L,NDER IS 12 GAGE CQRRUCd1E0 MEUL PIPE •~q e
N OR FABRICATED FROM f/8' o L PUTE. ~
~ N . 18' NININIpII
N iACItWELD NOTES: ALL AROUND 1. THE CriINDER MUST BE iM>aLY ~ C '~I
~ • FASTENED i0 THE TOP OF r3 ~N Alpp ~ (i•,
~ THE RISER. 2. SUPPORT BARS ARE ARACHED 2000 PSF MIN. " PIP ~ ESSr ti9 2 PVC E a ~ _ Q ~
d er sTRAPS Ba.rED ro roP BEARING CAPACITY of RISER. ELEVATION SECTION BENEATH COLLAR CLAMP (TYP) SEA l 2' PVC PIPE
~V a/DP!)RT FLLR SVF 2' FlDlIBLE HOSE 15423
1- s x 12" i t/4r x i I/4' ANGLE OR 0 ~AGER dolt plpE. J ~.pT 1 I/4 STEEL 4 FNGINE~~` '~'.r
f 4' y~~
N PIE Rr~ CONNECTION DETAIL TO OUTLET P AY ~IN/INNNI
N A A rrt_ cCCD r/11 I A R ~aeQr n~ ck?uuFR AF1M:F A4SFAIRLYI
= SECTION A-A nor t JLLI Vywu~ I tr nn r v. ..........r.. . ~ t r -7 G.'-7 G/ v ~J
TI-VORTEX DEVICE N AN -VORTEX 10
NTS -
3 m Date B Designer Scale WITHERS R"ENEL Sheet No.
No. Revision W&R AS NOTED 1 REVISION TO DWQ PONDS dr LEVEL SPREADERS 5/20/01 JAC
Drawn By Date CORNERSTONE PARK EXTENDED GED DRY DETENTION POND LOT 2 ENGINEERS I PLANNERS I SURVEYORS
'o JAC 8/01/01 a NORTH CAROLINA Checked By Job No. RALEIGH, 111 MacKenan Drive Cary, North Carolina 27511 tel: [phone] fax: [phone] www,withersravenel.com I L
111 200147 - - - -
1

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~ _ 1"^10 ~
1 I ~
i i , ~ ~ ~ JB~6 ~
FES ~7 L SPREADER . I LEVE I I
I Qlo = 9.51 CFS ~
~ ~ + 429.5 ~ _ "RCP ! ~ ~ ~ DIA 18 ~
~ ~ ~ ; I - ~ ~1 I _ ~
o ~ ~ , - ~ , 1 a JB
mi m o I I ~ N - - ~ LEVEL SPREADER SPECIFICATIO S _
Z + 429.5 - o ~ ` i ~ c_ ~ I +429,5. , I; C7 _ _ - , I ~ LENGTH = 124 FEET S 7
_ ~ _ o I F''1 1 _ - _ - _ - o - ' DEPTH = 0,5 FEET
I _ _ _ - ~ , WIDTH ®ENTRANCE = 10 FEE M ~ ° 416,0 ° Ov°~°°° 0°~
_ - _ ~ ~ ~ - ~ - - o ~ :U> GRASS TYPE =TALL FESCUE : c ?~n~ ~a
i _ ~ LINER =DOUBLE NET COCONUT
1 I Fr-) FIBER EROSION CONTROL BLANKET 5p.
j ES603 ~m°~ ~ ~ (NORTH AMERICAN GREEN C350) Rg _ , 11'x. ~1_ '
,l RIP RAP
PLUNGE PODL ~
LEVEL SPREADER ~
I
I o. ~o. 8 ~ FES 7 LEVEL SPREADER LOT ,
2~ ~ti ~
- ~ 1 =10
Y1606 I
, ~
1
` ~ s+. "'tea ^ 1
. , 1
FES 15C I .
FES X603 ' 1
Qla = 17,6 CFS ~`'--,~K.. ,
Qlo = 5,39 CF5 DIA = 18" RCP DIA = 12 RCP
. ~
.
LEVEL SPREADER SPECIFICATIONS ' LEVEL SPREADER SPECIFlCATIONS ~
LENGTH = 229 FEET 1 1
LENGTH = 70 FEET 13FT/CFS) - rFET ( DEPTH - 0,5 .
DEPTH = 0,5 FEET IDTH ~ ENTRANCE = 10 FEET
1MDTH ENTRANCE = 10 FEET U _ _ GRASS TYPE =TALL FESC E i _ ~ - _ .
GRASS TYPE =TALL FESCUE LINER =DOUBLE NET COCONUT FES 15C - NUT ~ o- e ~ - _ i~ _
FIBER op o 00° ap , Q . LINER -DOUBLE NET COCO EROSION CONTROL BLANKET y ~ ~.ao ~~~~o. o~ FIBER EROSION CONTROL BLANKET NORTH AMERICAN GREEN C350) ' Da; Q~ .
( ~ ~ (NORTH AMERICAN GREEN C350) ~ 1
li ~ -
1C4 _ _
~ , - ~ ~ R1P RAP
_ . f PLUNGE POOL ,
i - , nEe ""^v
STAPLE PATTERN - - ~i LEVEL SPREADER ^
d 2 4.5
3.75 staples/y staples/m^2) using 6 in Sp' N ~'~-,FRB
(15.2 cm), 11 ga. wire "U" ft
sta les. 8 in (20.3 cm) ® ~ p (1.22m
staples and longer may be used for loose soils. 9
a. sta les or heavier may 9 P
be necessar in hard or Y RLOTB®FES 15 LEVEL SPREAOE
rocky soils. Secure blankets to soil ,~p~ 1N 11 I ~1(/ ,gyp N
1.6ft .....NR b placing a sta le/stake ,gf ..~.R
trough each YEL OW colored dot. .25 (,50m)
Leve! Spreader (not to scale ,f-' i
® ~ ~ i M H/'1 ~
„ry.....iN.ArY..
yll'n.. eM'N' •~,,,.,~y Vegetated y,~,M~, , •,~..-.Transition J 1
diversion }•w* r ~ to0grade
1~ ~
rl~ nM Wih J~ .4o Md H ~ ~
N ~.~.,J, FES~19
. ~ ',Y. w~ , ~ Stabilize 6.67ft y„ Pe ° RIP RAP
Stable ~ Iw, ~•vti Y y. • .r o ° ~ PLUNGE POOL °
- undisturbed k I,,, y d? ° ° ~ , ~Oo97~~ ° ~ ,
° ° ° ~e~°~o~~~° ° n 92
~ ~ t , ~ ~r.rl' iµ ``w. mm
MATERIAL SPECIFICATIONS w`. W4 ~ ' ~
~ jM 4 ~I" J ti br` k Ali
machine roduced mat of 100% coconut ~ a,. ~a of r+~ M,,,I. 50 The com osite turf reinforcement mat (C TRM) shall be a p ~ ~ ~ w„ u,
C3 P nsional nettin structure. rated into a ermanent three dime 9 fiber matnx mcorpo P ' ,f0.
v dut UV stabilized bottom net with 0.50 x 0.50 inch D ~ ~i N ~Qe
The matrix shall be stitch bonded between a hea y y c;~i;~ ed eCtlOn tabilized, dramatically cuspated ( p ) CrossS ~ ~ ///i i~
1.27 x 1.27 cm) openings, a super heavy duty UV s eav dut UV ( m o enin s, over lain with a h y y nettin with 0.50 x 0.50 inch (1.27 x 1.27 c ) p 9 ii ~
intermediate g x 1.27 cm o enings. The cuspated netting shall form o net with 0,50 x 0,50 inch (1.27 ) P ri Variable stabilized t p Mate a! ~ , LEVEI SPREADER
'r width of the mat, The three Wettings shall be stitched - rominent closely spaced ridges across the enti e forma ermanent stapledm
ca p ters with UV stabilized polypropylene thread to P lace g" J z to ether on 1,50 inch (3,81 cm) cen P g ~ min rc~
} three dimensional structure. I~_ Ir--_
~ read stitched along both outer edges (approximately 2- - ~ II~(( I+(~••~) I~ I I II-- (Il' a colored th , ~II~ I {
~ All mats shall be manufactured with ats Level BP I~~ rla uide for ad)acent rn ~~II I(I -1)~~ _ - .7 cm from the ed e) as an ove p g ,I(1.-- ~I{ ••~D' i N~
5 inches 5 12 ] 9 of s reader; i J.. c~ [ P z lent. The ~ B
~ mat shall be the North American Green C350, or equiva ~I'~((I, w The com osite turf reinforcement Buried
p forcement mat shall have the following physical properties: anent com osite turf rein 8^ min ~ C350 perm P OT 8 ~ FES 19 LEVEL SPREA ER L N ,
w . 1 =10
a Material Content LEVELSPRF.ADERCONSTRUCTIONSPECIFICATIONS: w
z fiber 0.50 Ib d3 [0.27 kg/m3]) i, THE MATTING SHOULDBEAMINIMUMOF4FEETWIOEEXTENDING8INCHES 100% Coconut F ( /Y I V TICALTRENCHONTHELOWEREDGE. Matra x THE LIP ANO BURIED 8 INCHES DEEP N A ER
THE UPPER EDGE SHOULD BUTT AGAINST SMOOTHLY CUT SOD AND BE SECURELY ~d
N e HELD IN PLACE WITH CLOSELY SPACED HEAVY DUTY WIRE STAPLES AT LEAST 12 ~ ttin s Top-Heavy UV Stabilized Pol ropylene N g FES X19
8.50 Ibs 1,000 ft2 (4.15 kg 100 m2) INCHES LONG, u~ / $ UV Stabilized Polypropylene 2. ENSURE THAT THE SPREADERUPISLEVELFORUNIFORMSPREADINGOFSTORM Qio = 10.1 CFS ~'•'uNa"''ti
~ Mid-Super heavy ~ 20 Ib 1,000 ft2 (10.21 kg/100 m2) RUNOFF. „ , eN"~~~ ~ CARp ~g DIA = 15 RCP ,t~~,+ "tl.;~", ~ ~
/ 3. CONSTRUCT THE LEVEL SPREADER ON UNDISTURBED SOIL (NOT FILL). Bottom-Heavy UV Stabilized Polypropylene 4. CONSTRUCTA20FOOTTRANSITIONSECTIONFROMTHEDIVERSIONCHANNELTO gym'.:a GIyP ~ fESSlp~1j'~9 ~~a ~(i Of ~ ? C` ave~.na.~w~, A d ~ ~ ZI
0 8.50 Ibs 1,000 ft2 (4.15 kg/100 m2) BLEND SMOOTHLY TO THE WIDTHANODEPTHOFTF~SPREADER. ? / A PROPERLY STABILIZED ®q ~ ba9 tl^ ~Pp&~! Sad S ~~~W ~I~SIQ~ S E A l =
5. DISPERSE RUNOFF FROM THE SPREADER ACROSS LY SMOOTH PREADER SPECIFICATIONS w LEVELS y rq ~ r
of n e SLOPE NOT TO EXCEED 10%. MAKE SURE THE SLOPE IS SUFFICIENT c Thread UV Stabilized Polypropyle TO KEEP FLOW FROM CONCENTRATING. • i8 M§~. ~ ~ 15423
~ 8. IMMEDIATELY AFTER LEVEL SPREADER CONSTRUCTK)N, APPROPRIATELY SEED LENGTH = 131 FEET ~ 1~4~~ ~ • v F ~ d tl 4 F~ NGI N6~ ~ •s DEPTH = 0,5 FEET ; 4 S~••
~ S ecifications er roll) AND MULCH THE ENTIRE DISTURBED AREA OF THE SPREADER. ~ Physical p (P N . ~ Fry , ~r Ry ~ WIDTH ®ENTRANCE = 10 FEET ~ GI N~ a • dAY
O En lish Metric 9 ~I~'y~" °°aeee \ ~~~Igg11 GRASS TYPE =TALL FESCUE ~,,®T
6.50 ft 2.00 m Width LINER =DOUBLE NET COCONUT '`<< ~
Len th 55,50 ft 16.90 m .g k FIBER EROSION CONTROL BLANKET SZ2.. a z.....
IAI„,„h+ 37.00 Ibs+ 10% 16.80 g (N(1RTN a~iFRl(`AN (;RFfN x.350) F~~
LU L
roc y 40.00 Yd2 33.40 m2 w Area
Sheet No.
WITHERS R"ENEL TEL SPREADERS LOT 6 LOT 8 ENGINEERS I PLANNERS I SURVEYORS
Date B Designer Scale No. Revision W&R AS NOTED CORNERSTONE PARK
1 REVISION TO DWQ PONDS & LEVEL SPREADERS 5120102 JAC Date
o Drawn By LEVEL S' K JAC 11/25 01 111 MacKenan Drive Cary, North Carolina 27511 tel: [phone] fax: [phone] www.withersravenel.com
a 8 Checked By lab No. , NORTH CAROUNA
JJJ 200147 a
Y

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v n ~ ~ y ( ~ _ s ~v ~ , 5 / ~ ~ \ i - _ +++++++1.+ ';~dU,plCU5 BIPLORUS ~ ,A
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i y o`` ~ ~ KI<~1M • ~ ` s i ~ . ~ X ~ _ NRB ~ ~ ~ / / / / / /
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_ . ~ . t-...... ~ ~ ' ~ ~ ~ ~ANdTARY SEWER EASt°I~~~T ~ ~ ~ ~ ~ r//// ,.-L , ,
,T... v. , ~ 2Q00 PG 77;38 =2239- \ ~ . ~ ~ ~ ~ANN~~CCIDA
~ : i ~ ~6 - ~ SON 1~91<
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r - - , _ \ ~.PEL~ANDRA 17fR&INI : v~ ~ < , C~INI n . - 6~ NYfv1PHA~A~DORATA l'"~ ,
~ _ ~ EXi4tH66 : ~ , ~SA6~TfAR11~l~AfilFOll~~," ~ , ~
~~.N i ..N,, ~ ` ~ ,a ~ ~ , - V _ o - _ ~ _ .
z ~ ~ ~ E, - ~ _ . _ ~ _ _ _ / _ ~ PLA~ TIN -PLAN VIE
. ~ f I - - ~ ~ f ~ ~ -,,.ry. _ ' ~r-,F- _ ~ ~
: . _ _ ~ , j ~ - ~ i ~ \ ~ i i
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J J _ ~w ~ . l ~.....1. -20 ' 1. s _ / , ~ i
. _ ~ d.... ~ ~ / : ~ ;
-
- - NOTE: _ ~ _ - THE CONTRACTOR SHALL SEED AND ^ f / i ~ / _ ~ , - ~ ~
428 - - , MULCH ALL BARE AREAS (EXCEPT IN AREAS ~ _ ~ - i / , ~ ~
_ i WHERE PLANT MATERIAL IS PLACED) AFTER - - ~ _ _ , ' MICRO POOL ~ ~ ;
N©TE'; ~ - CONSTRUCTION IS COMPLE(E SILT FENCE 426 ~ ~ 106 SF - ~ i~ ' ~ ~ ;
C SEE DETAIL ~ SHOUL.O REMAIN IN PLACE UN11L CRASS ~ ~ ` . SUP RTS AT 3 ANT VORTEX DEVI - - ~ - ~ GRASS HAS BECOME ESTABlJSHED. / ~ ~ -
424 - _ - - OPERATIN WHEE.! ' - - \ FROM BASE - -y- - - -
_ - SKfMMER CE . - - _ _ _ S E CHART _ _ i / _ ; ~ ;
-E - 2,g : ~ _ ; ~ , _ T T RISER ' OF AAM - - 81 ~NNEC _ _ , 422 ~ - CRESS EL_421.___ - } i 2 ~ 1 ~ -ELEV_4 ~ ' `'i , ~ i ~ j
' i _ _ - i
Y M } ~ ¢ ; 420 PRO OSED GRADE ANTI-SET P OLLAR 1 _ _ IEEr _ ELEVATION_ 42 .0 _ = ~'t r I
_ D ~ ALDNG CENfiERt1NE (SEE DI -9F SIN - ~ ,
_ - - 418 _ - - - - - ~ n PRECAST ~ _ - , _ - HIGH MARSH ; „T i 1316 SF " ~ _
_ _ _ ~ - CON RETE MANHOL (RISER - . . __-_1NV-# IN 4
• v - _ ~ ~ 4' 90' HB ` . ~ 416 _ _ ~ - ~ . I
~1A r ~ - 24"m Rc c~s~-~l n 8 LF _-fNTO-C f00T11d~ _
DISSIPATOR P ?~1 Jf~CK S VALVE ~ NR _ 414 ERCINER 4 I LOW MARSH r LOW MARSH - ~
FILTER FABR UND ~ _ _ / ~ 1 _ ~ ~ , 1 1,945 SF i
~&'L x_ 'W_x 18 D~ _ _ - _ - - _ _ _ 412 - - r , - - - - _ _ - USE 2, 500 psi CONCRETE _ _ i
- - _ _ ~ ~ _ - / - ~ " , _ ~i ~
~ 410 ~ _ - ~ = - / ~ ; i , ~
n ~ ~ ~ ~ ~ ~ ~ r ~ ~ FORE OAY ~ ~ ~ /
o `r ~ co ~ as p ~ ~ ~ O O ~ eh ~ O ~ N N N M ~ ~ HIGH MARSH ~ / ; r' 106 SF - ~ ;
f, y. 'd' ~
d' ~ ~ ~ --P F.A~ ; ,
~ ~ ANTI . , , -
10+60 10+80 11+00 10+20 10+40 10+00
NOTE: ~ - - _ _ _ _
• D GROOVE W CONFINED '0 RING GASKET SHALL 9E TONGUE AN / - ROFI LE VIEW 1. 24 a RCP ~ R BARREL P _ RISE
TM C-443 LATEST AND JOINT OF ASTM-C-361 LATEST. ~ - MEETING ~ ma Infomratlon
z 1 -10 HORIZ D TO COMPLETELY DRAIN sum ry - ~ .KEEP 4 GATE VANE CLOSED UNLESS THE NEE } 1 =5 VERt 2 Cornerstone Park PLANT LIST
POND IS NECESSARY FOR MAINTENANCE PURPOSES, Extended Welland Detention Pond 1-Lot 7 _ _ THE - Max. K. UA SPECIES Common Name S~ac~n~__.
~ Storm Qpeak Max. ~ Frequency In Out WSEL Pond Storage 4 .o~ _ -
rt. ,
z - ~ 2 5.82 0.05 421.48 0.101 35 Canna flaccida Golden Canna 3 o.c. l1
w A A 10 7.50 4.42 421.81 0.106 '6 87 H menocallis caroliniana S ider Lily 18" o.c. Y p
4 REBAR 12" 100 9.13 9.08 422.00 0.119 Fi Iris 18" o.c. 168 Ins virgirnca Blue ag
w O.C. EACH WAY VENT 73 Juncus bifloNS Shore Rush 2' o.c.
w ° PRESSURE RELIEF ~ ° ° ~ • e ElevatlOns SCREEN ACCESSIBLEIHROUGH DooR 95 N m haea odorata Fragrant Water Lily 3' o.c.
HOLES I/z" DIA. ° ° o Badn Button Elevat~n 418.50 ft. YP
rED - N Permanent Pool Elevation 420.00 ft. as PLAN VIEW ° ° ~ METAL OR I/8^ STEEI PUTE. Vii. NorE: 141 Peltandra vir inica ArrawArum 18" o.c. ER MAY VARY g SKIGHTLYFROM P1 k rel Weed 18"
w ~ raLES ~r Crest Elevation 421.56 ft. w ~EEa~~iTRrEED~IF Erns of ~ Top of Dam Elevation 422.00 ft. SLI 249 Ponteder~a cordata c e aLUSTRArION
F CC+FRUGAlIONS ARE LEFT BARREL WELDED (lYP) FULLY OPEN WHEN THE TOP IS PIPE 1/2" PREFORMED JOINT A as 293 Sa ittaria latifolia Broadleaf Arrowhead 18" o.c. 9
ArracHED. DIAMETE FILLER, 12" WIDE re 141 Saururus Cemuus Lizard's Tail 2' o.c.
Permanent Pool Surface Area 4702 sq.ft. ~ C111NDER a I2 GAGE Drainage Area 3.52 ac. F~oAr
iii CORRIK;AIED PETAL PM'E ~ 0 2.55 ac. o OR FABRICATED FROM i/B" ~ Impervious Area 33 Scir us un ens Three-Square Bulrush 18" o.c. A P 9
0 60' STEEL PUTS. , ~ N DUKE 139 Zizania a uatica Wild Rice 18" o.c. OUTIETEND; CONNECTION q
a TACKWELD Other Parameters To o~ S ALL AROUND rOOUTLETPIPEORRISER BARREL PIPE LONGER THAN SHOWN N071NCLUDED WITH SKIMMER
a Ig' NorES: Design Rainfall 1 in. Nnoff r~ i. THE CYLINDER MUST a" FIRMLY 8 N FASTENED TO THE i0P OF Drawdown Device Skimmer SUPPLIED BY USER e~g1i811'9i9y4y/,d
~ rHE RISER, 2000 PSF MIN. lllkr. Drawdown Tkne Req'd. 48 hrs. s,.amsx+ ~IYBj
2. SUPPORT BARS ARE ATTACHED ATION BEARING CAPACITY ,3s' Br srRAPS E+Di.TED TD roP ELEV SECTION I~Ikr. Detention Volume Req'd. 0.206 ac.tt. FLEXIBLE JOINT e 4, pa. ~7 ~y9~.~, o
of RISER. BENEATH COLIAR Detention Voume Provided 0.207 ac.ft. `T suaar>RT dAR SIZE - r SKIMMER DETA y ~ ,;r,~
F ~PACER2BAR i]B REBAk D Lot 1 Extended WeWnde -Paid 1 N.r.s : ° ax~EP,~. ' p A 4 ~ M
~ (m') Skknmer to Use: 2" Skimmer wl 2" head 0 1~~ 498 ~ ,~.~r
N Volume to be Drained = 9,004 cu. ft. ,Y~~ %"~e4 ° 4~ .;~ryG ~~Cr,, c, dd `~yn . I N t~~
m ...T. ~rrn nnI r ~ D Draw Down Time = 2 days
x SECTION A-A HIV I I-accr Lo ULLMn Orifice Area = 3.53 sq. in. ~~if6ellNt~
. o er• z+~
NTS N ANTI-VORTEX DEVICE NITS Inches Sheet Na.
WITHERS R"wr.-NEL DETENTION WETIAND POND I LOT 7 ENGINEERS I PLANNERS I SURVEYORS
- Date B Designer Scale NO Revision W&R AS NOTED
r 1 REVISION TO DWQ PONDS & LEVEL SPREADERS 5120102 JAC CORNERSTONE PARK Drawn By Date ~i EXTENDEDChecked By Job No. ULEIGH, NORTH CAROLINA
c JAC 11 Z28/01 111 MacKenan Drive Cary, North Carolina 27511 tel: [phone] fax: [phone] www.withersravenel.com
KLJ 200147 - -

,
- ~ l s ~ / ~
~ - ~ ~ \ ~ \
_ , ,
~ ~ ~ _ , , ~
\

1 J
. \ ° a ISSIPATOR PaD~. ~ _ \ , _
- 1 w CLASS • ,9 RIP RAP ~ . ~ R ~ _
r:< ~ ~ 19 x8 W 9'b: x . - \ l
~ , ~ ~ U E'~1LT~'R:,. fABRIC ~w / z ~ ~ ~ - h ~ • /
~ UNDJrRLiNER ' ~ ~ ~ \ .w,..... /j'
,U ~ . y y ~p ...:rte... _
``a-~~ A_ - ~ ~ Qo ~ ~ ~ GITY.OF RALEIGH ~ a~ ee \ 3 CUS 61~LORUS - _ ~
V~' ~ I ER EASEMENT ~tA~ 0 1 ~ S ° ~ L 3,CAIVNA FI,ACCiDA~ - . ~ ~ - ~ .
' ~ \ ' , t _ ~
• \ ` \ 2811YM`F~JOCALUS C ~OLINIAN~' _ ~ A , ~ ~ ~ ~
~ 1 ~ ~ ' I IZAN ~AQUATICA
~ ~ ~ . ~ / \ „ 16 SAURU~U~S CERNUUS ' _ _ - ~ ~ POSED IAZ;ORD A ~ ~ ~ _ ~
„ ~ ~ `c LF 12 I~CP, 8 SAGITTARIA LATIFOLIA ~ ~ ~ ~ 5'CAN~ F CIS ~ _ ~
~ ~ ~ ~ y x C ~ 111 ~ 5:f6~' ~ ~ ~ ~ . x ~ ~ _ , 22 SCIRPUS PUNGl:N5 ~ ~
~(T ~ ~
} ~ , 3 36 PANICUM VIRGATUM ~ ~ _ A ~ V `
~ o~ ~ +4tS.5~~ ~ ` ,Y,~, ~ MYRICA CERIFERA / L i - ~ \ V ~ ~
, ' i ~ ~ , .
~ ~ C: t ~ 1" ~ \ ~ y W \ ~a. ~
1 ~ :I ~ ~ n ~ •Y y. W W ~
~ 20 R ! l ~ , Q 0 I ~ ~ ~ R(SER W/TITA~H - ~ R is , ~ o ~ i fuq S N, I AINAGE., EA E `Q r i ~ I ~ / 'V\ ~ ~
~ CK , ~ X ~ ~ , y ~
r l ArR~ _ ~ ~ ~ ~ " . _ i y .o
• 4 . . , " / ~ ti Q ~ .a ~ • W y
, ~ ~ ~ ~ ~ ~ ~ ' ~ ~ ~
, _ ~ ~ S r,, ~ ~ / ~ ~ • ~
BLS ~c C ~ . , ~ is \ , .
EXMH6~ Q ~ ~ , ~ A ~ 18 SAGITTARIA IATIFOIIA
\ ~ , . \ , _
_ ~ ; „ 17 NYMPHAEA ODORATA
r, , ~ ~ o ~ ~ ~ 23 PONTEDERIA CORDAT'A _ ___________rt 17 SAGITTARIA LATIFOIIA'"
\ \ , . v fir' ' ~ „ , ~ ~ ~ _ 35 HYMENOCALLIS CAROLINIANA ~ ~ _ _
\ ~ ~ . f ~ _ \ - ~0 IRIS ViRGINICA ` ~ J 3 SCIRPUS PUNGENS 1-- ,
~ ` _ _ __7 5AtlRURU9 CERNUUS ~ _ -
~ , \ ~ A ~ - A Y 1 ~ Y. • . .
i A. ~ • r ~ / ~ ~
i . \ \ 1 \ \ \ ~ ~ ~ ~ ~ PL,ANtING - VIEW ~ ~
i - NOTE:
424 _ THE CONTRACTOR SHALL SEED AND MULCH ALL BARE _ - ~
AREAS EXCEPT IN AREAS WHERE PLANT MAIERUIL IS
422 ~ PLACED AFTER CONSTRUCTION tS COMPLETE SILT FENCE ~ ~
_ f , # DEIACf -SEE DETAIL ~ ~ SHOULD REMAIN IN PLACE UN11L GRASS HAS BECOME ' MIN
ESTABLISHED. 420 - j~~- _ TOP Of M EL=419.0 ~ C ~ ~ _ j ~ ,
_ \
418 - - _ _ _ _ _ _ _ - _ - _ Summary Information ~
_ - - _ - 1 ~ . - _ _ _ _ ~f-- - Cornerstone Park I ~ _ . SU PORTS AT 3~ Extended Wetland Detention Pond 2 "Lot l
416 - -PR GRAOE _ ONG BARREL RUNE ~ FR M BASE Storm _ Qpeak Qpeak Max. Max, ~ - ~ ~
- _ Frequency In Out WSEL Pond Storege _ , r"r"'r.~
414 ~ - - _ _ - _ Pe6L / ~ ~ ~ HIGH MARSH
-~L1(G~ _ 416.OD 2 2.22 4 7,7 __~.-_-.s____._ - - RISER 1.95 1 6 0.05fi ~ TO ELEV 14.5 ~
412 _ - - ~ - - _ - - - 9~P f 10 2.fio 2.79 a17,62 0.056 ~ x4 ~ /
~ - _ _ - ~f p~ 100 3.49 3.49 417.86 0.060 / HIGH MARSH ,
410 _ ' 375 SF ~ ~ ~
~ - ~ _ . _ Elevations ' IIW=- .DO ~ . . .
408. _ _ ~ _ 1E VALVE - Basin Bolton Elevation 414.50 ft. i ~
4 NRS ~ / - - Permanent Pool Elevation 416.00 ft. ~ ~ ~ , i
Crest Elevation 417.55 R 406 - _ ~
~ Top of Dam Elevation 419.00 ft. ~ i
404 _ _ _ - 4B 12"~d RCP- -N! CAI~RF7E _ ~ CtASS l 5.66X SLOPE S L x 5 W x b LOW MARSH 275 SF
r ~ TOR RAD ~ TkuGK _ - - , _ FORE &4Y
1,500 per E1E Permanent Pool Surface Area 1002 sq.ft. 4 L _ ~ ~ 115E - TER fABR~ ERIJIVER - - . _ _ Drainage Area 1.06 ac. , 02 ~ MICRO POOL 150 SF
Impervious Area 0.54 ac. I _ - 150 SF ~
DATUM ELEV
Other Parameters ~ 400.00
Design Rainfall 1 in. ruraff
c~i M vi ad o rj vi o0 o ri Sri Drewdown Device Skimmer p p q O r- N N N Min. DrawdOwn Time Req'd, 48 hrs. 1
e}. c}. d" ~t et• ~t ~t ~ eh d~ Min. Detention Volume Req'd. 0.045 ac,ft. ~ HIGH MA RSH
Detention Voknne Provided 0.046 ac.ft.
10+00 10+20 10+40 10+60 10+80 11+00 Lot 7 Exbnded tlVetlanda • Pond 2
NOTE: ci " , Skimmer to Use: 2" 3klmmer wl 2" head
Z RISER r~ARREI -PROFILE VIEW 1. 12 0 RCP SMALL BE TONGUE AND GROOVE W/CONFINED 0 RING GASKET _ Volume to be Dreirred - 1,957 cu. ft.
~ ~ MEETING ASTM C-443 LATEST AND JOINT OF ASTM-C-361 (ATEST. Draw Down Time = 2 da - 1 -10 HORIZ A ~ _ PLANTING ARE -
1 ' VERT 2. KEEP 4 GATE VALVE CLOSED UNLESS THE NEED TO COMPLETELY DRAIN Orifice Area = 0,87 sq. in. 5 AS FLAN VI N~ E
~ THE POND IS NECESSARY FOR MAINTENANCE PURPOSES. Orifice Diameter = 1.05 Inches N ~
a0
t7 Z
w A A
z ~ ° PLANT LIST
w y4 REBAR 12" QUA SPECIES Common N m a e Spacing
w ~ O.C. EACH WAY VENT - Z ° SCREEN ACCESSIBLE THROUGH
W PRESSURE RELIEF o ° ° ? HOLES 1/2" OU. o o . ` ~ DOOR 8 Canna flaCCida Golden Canna 3' o.c.
63 Hymenocallis caroliniana Spider Lily 18" o.c.
PLAN VIEW o o roP Is ro r.ACE CORRUGATED ~i .I NOTE: ~ ° MEra oR I/e• srEa PuT~ SKIMMER MAYVARY 40 Iris virginica Blue Flag Iris 18" o.c.
w r>E owrrED~ ~ wY SLIGHTLYFROM
ILLUSTRATION 3 WELDED (TYP) CFDPE?~I w?~1 n~ TDP ~ 38 Juncus biflorus Shore Rush 2' o.c.
ATTACHED. PIPE 1 2" PREFORMED JOINT DIAMETER ~ 8 Myrica cerifera Wax Myrtle 5' o.c.
c FILLER, 12" WIDE M cnwDER a I~ GAGE 17 Nymphaea odorata Fragrant Water Lil 3' o.c. Y
CORRUGATED IffAL PIPE '~.f.".~i ~ c ~ OR FAa71CATED fAgY 1/E FLOAT 36 Panicum virgatum Swifch Grass 3' o.c.
42' I N STEEL PUTE. .
rAtl+kND ~ 19" NOTES: 51 Pontederia cordata Pickerel Weed 18" ac. ,,aal°"tt~gs~~
N 1. THE CYLINDER MUST BE FlRId.Y 8" OUTLET END; CONNECTION FASTENED r0 THE 10P Of 43 Sa ittaria latifolia BroadleafArrowhead ~~~~.~~~aN°";'j~°
THE RISER, TO OUTLET PIPE OR RISER Sau urns Cemuus Lizards Tail 2 o.c. ~ . ~ \ BARREL PIPE LONGER THAN SHOWN _ ~
2. SUPPORT 8AR5 ARE ATTACF~D 2000 PSF MIN. BARRE 9 24° aY srRAPS a°'`TE°'o roP ELEVATION SECTION BEARING CAPACITY Nor In N OF RISER. M NOT INCLUDED WITH SKIMMER 35 Scirpus pungens Three-S ware Bulrush 18 O.C.
~ s x 12" BENEATH COLLAR SUPPL ~ f0 4 SUPPLIED BY USER 14 ZI n' ~ 1~4~~, G za la aquatlca Wtld Rlce 18 o.c.
0 PACER BAR 8 REBAR o ~ /~pp~g~~pp ~y,gg v.

a FLEXIBLE JOINT LE JOINT - - - _ - - _ N L. 1 • ~ ~ ' 811f1E10 ,
= SECTION A-A ANTI-SEEP COLLAR SKIMMER DETi 4.
A~iri_un~rw nnnr~ MMER DETAIL I . .
o nrrrr vvnr~n u~rrv~ NTS N.T.S N. T.S
Z NTS
o No ` Revision Date B Designer sale ~
1 REVISION rO DWO PONDS & LEVEL SPREADERS 5120102 JAC W&R AS NOTED Sheet No.
$ Drawn By Date CORNERSTONE PARK ° CBP 200147 EXTENDED DETE]
ENGINEERS I PLANNERS I SURVEYORS
d Checked By lab No. 9 RALEIGH, NORTH CAROLINA $ KLJ 200147 111 MacKenan Drive Cary, North Carolina 275111el: 919.469.3340 fax: [phone] www.withersravenel.com

; /
T ND D - I WETLAND PDN - ~ PLAN VIEW ~ / EX ~ E DE>•ENT , D ~ i „
1 =20 / ~
f. ~ 3 JUNCUS BIFLORUS / ~
i , 4 SAGITTARIA 5 ~ i r
f
i / I 0 CANNA FLACC 131 ZIZANIA AQ 29 JUNCUS BIFL RUS
~ ~ _ 45 PELTANDRA VI
, . ~ , ' ~ ~ ~ - ~ CANNA FI~CCIDA 9 CANNA FIACCIDA
i
CLASS .B RIP-RAP i' / • • DISSIPATbIT PAD + ' 205 PQNTEDERIA CORDATA ,
19 Lx8 Wx9 0 1 n. x ~ \
r' r ,r~~ i ~ a USE FILTER F RIC ~ / , . , i.,
+ UNQERLINER' f` i ~ ~ ~ , / ~ / ~ / i + + + fir i /
. ~...,f ~ ~ r ; + + } + i } + + + ~ ~ / / ~ + h + + + + + + + + + + } + + h + i t i } { I f + + + { + + { + + ~ f A + 1 {
_,k..- ~ 24 FES r + + + + + + + { + + + + + + + + + +,i a { { + i + + + + + + + + +W W W W W W W W 1
~ / -:J~ INV ~9 ,00 I , ' 8 i
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~ ~ Y 'j ` "
~ %LF 24 RCP W W W W W W W W W W W W W W + + + a>.. ,..:jai W W W W W W W W W W W W W
H ®1,00 W W W
j W W W W W W W ~ i
I \ .rte' ,t~ ' o 36"0 CONCRETE W W W W W y. W W W W
~ ~ ~ ' Q ~ _ _ w... RfSE'R W RASH i
- ~ ~r • ' ~ RACK I ~ , ' +400.5 -
SKt~MER , ,
~ p + 399.5 ' , F , ICI ~ ~ _ _t t L- t - _ 1_ -l. 75AURURUSCPRNUUS
r I _ } _ ~ ; ~l_ l_
, , o , . ~ .
ma . 5 A
~ , ~ o a ~ 13 SGRPUS PUNGEN ~ 33 NYMPHAEA ODORATA - - ~ 23 SAGIiTARIA LATIFOLIA
;w r. S U - , 8 M A ,.,1.34..Sq{yf~~A TIFOLIA
f v ?t7 ~~~Y~-- f~{GH ~ - ~ I Af. 4 ~ . V _ _ - ' o iz 24 PA _ ~ 70 HYMFNOCAlllS CAROLINIANA 63 IRIS VIRGINICA 33 SAURURUS RNUUS
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00 fjC: ?238 7?~9 ° ~ ~ ` 1
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. `
410 r
_ _ - Summary infom~ation _ ;
Cornerstone Park Extended Wetland Detention Pond 3 -Lot 7
- PLACE STAN ~ _
SKIMMER D CE Storm Qpeak Qpeak Max. Max, SUPPORTS AT 3 Fre uen In Out WSEL PondStora e 406 j _ q cY 9
BASE ~CDNAECl- _ /
ALOfVG EL C - WSEL _ - _ _ _ - 2 5.60 2.60 402.74 0,164 404 - - - _ 3~E ~fRT HIGH MARSH
_ . _ _ __CRfSI X172.51- 10 7.22 6.29 402.90 0.183 roP of a=4o3.0 ..-,y,....r.. - I t
- 100 8.79 8,79 402.96 0,190 402 - - i 1 - DIP _ - - - - -
- PQQE HIGH MARSH
- A110N X01.00 s ~
400 - - Elevations =39&2 - - - P~CA$T INFORCED Basin Botton levation 399.50 ft.
Permanent Pool Elevation 401.00 ft. E {RISER} - ' . Y'" ~ LOW MARSH FORE ~I MICRO POOL
398 - ~ 1 ~ Crest Elevation 402.55 fL - - _ _ 4 0 HB P 1082 SF 49fi SF ,.,49$ SF ~ ,
- " - - ~ ~ To of Dam Elevation 403,00 ft. CLASS I ,RIPRAP SEE DETAIL 1 " i
396 DISSIPATOR ff Z4" THICK_ _ _ - _ - i-- Areas i
5 LF 24 f RCP CLASS I ~ , 2 ; Permanent Pool Surface Area 3306 sq.ft. '
_ 394 - 0 i. SLOPE Drains a Area 2.24 ac. ANCH H AI- ~ 9 Q-.. MAN..QhE ~
I 12 IN CONCRETE F 1N~G ImperwousArea 1,79 ac. HIGH MARSH
392 X ~ * ~V" - _ _ L1S 500__psi CO Other Parameters 1,231 SF
DATUM ELEV Des' n Rainfall 1 in. ruraiF ~9
390.00 Drewdown Device Skimmer
~ ,n r-. Ln ~ ~ ~ rn ~ ~ Min. Drawdown Time Req'd. 48 hrs. AR -PLAN VIEW r
~ u'i vi co N d' Min. Detention Voume Req'd, 0.144 ac.tt, rn rn rn o o g .od. ~ ~ g ~ Detention Volume Provided 0.145 ac.ft, 1"=10'
~ ~ ~ ~t d- -
Lot 7 Ext~nd~d YWtlmds -Pond 3
10+00 10+20 10+40 NOTE: 10+60 10+80 11+00 Skimmer to flee: 2" SkNnrr»r wl 2" head
1. 24 ~ RCP SHALL BE TONGUE ANO GROOVE W/CONFINED 0 RING GASKET = RISER BARREL -PROFILE VIEW Volume to ne Draped 3,x52 cu. ft.
z MEETING ASTM C-443 LATEST AND JOINT OF ASTM-C-361 LATEST. Drew Down Time = 2 days ~ 1 =10 HORIZ 2. KEEP 4" GATE VALVE CI.OSEO UNLESS THE NEED t0 COMPLETELY DRAIN Orifice Area = 2.78 sq. in. PLANT LIST
1 "=5' VERT Orlflce Diameter = 1.t~e lncnes UA P I Q SEC ES Common Name S acin
~ THE POND IS NECESSARY FOR MAINTENANCE PURPOSES.
25 Canna flaccida Golden Canna 3' o.c.
70 Hymenocallis caroliniana Spider Lily 18" o.c.
W
z A ° A 63 Iris virginica Blue Flag Ins 18" o.c.
~4 REBAR 12" 102 Juncus biflorus Shore Rush 2' o.c.
~ e O.C. EACH WAY ° z 8 Myrica cerifera Wax Myrtle 5' o.c.
W PRESSURE RELIEF o 0 0 > HOLES 1/2' DIA. 33 Nymphaea odorata Fragrant Water Lil 3' o.c.
° o VENT Y
PLAN VIEW ° o TOP IS ID CAGE CQRRUGAffD c„ ~ o METAL OR I/8' STEEL PUTE. N SCREENACCESSlBLETHROUGH 24 Panicum virgatum Switch Grass 3' O.C. DOOR 56 Peltandra vir inica Arrow Arum "
PRESSURE REUff HOLES NAY ~ ~ oNI,rED, ~ ~ ~ NOTE: 9 18 o.c.
WELDED (i1P) Dui ruo~PE~wr~ n~E roP Ls BARREL 205 Pontederia cordata Pickerel Weed 18" o.c.
PIPE SKIMMER MAY VARY ATTACHED. ~~~ETER 7/2° PREFORMED JOINT SLIOHTLYFROM 202 Sagittaria latifolia Broadleaf Arrowhead 18" o.c.
~ FILLER, 12" WIDE ILLUSTRATION 95 Saururus Cemuus Lizard's Tail 2' o.c.
o CORRUGATED INEU~L WPE ,'a:'~~ a
~ OR FABRICATED FROM 1/8" ~ ~ 60' ~ a STEEL PUTS. i 'r 49 Scirpus pungens Three-Square Bulrush 18" o.c.
g TACKWELO N N ALL ARWND FLOAT 12 Thalia dealbata Powdery Thalia 2' o.c.
rr3 19' NOTES: ~ 1. rHE CYllNDER NUSi BE FIRMLY 8" " 1wt691111'/lpfftltl 131 Zizania aquatics Wild Rice 18 o.c. ~~~(~y CA tltl.
o FASTENED i0 THE TOP OF THE RISER. E ATTACHED 2000 PSF MIN. OUTLET END; CONNECTION Oyu ~4l~P°jY°aa°°ra°° ~ ~I `J n°° ~E I~
z. suPPDRr sws AR TO OUTLET PIPE OR RISER 3s" Br srRAPS E+affD rD TDP ELEVATION SECTION BEARING CAPACITY N " ct~ q': y BARREL PIPE LONGER THAN SHOWN ; 41, ~ • a
DF RISER. BARREL PIPE BENEATH COLLAR NOTINCLUDE /6 x 12" E R -NOTINCLUDEDWITHSKIMMER NOTE: $E~I.
~ SPACER BAR L18 R ~ SUPPLIED BY ~ (TYP) SUPPLIED BY USER G9$ THE CONTRACTOR SHALL SEED AND MULCH ALL BARE `a ,s; e
rn AREAS EXCEPT IN AREAS WHERE PLANT MATERfAL IS r, °°,'~NG
FLEXIBLE JOINT PLACE G~ '•°•,I .E JOINT 0 AFTER CONSTRUCTION IS COMPLETE SILT FENCE P,~ Fr _~~F-~~~
~ SECTION A-A ANTI-SEEP COLLAR SHOULD REMAIN IN PLACE UNTIL GRASS HA$ BECOME d~69P fl j~'' 9` ESTABLISHED r~Bfat1/H ~ 'p ncreu
..,T. „nnrrv nn nnr CICI~Al1AGD f1CTdl1
N AIV ? vun?tA utviUc I1 VV 1/llL
°z NTS NTS N.LS LS 1141itluk
No. _ Revision Date B Design Scale
a W&R AS NOTED
Drawn By Date CORNERSTONE PARK WITHERS R"ENEL Sheet No,
°a CBP 1/24/02 1 EXTENDED DETED DETENTION WETLAND POND 3 LOT 7 ENGINEERS I PLANNERS I SURVEYORS
d Checked By lob RAIXIGH, NORTH CAROLINA 8 No' KLJ 200147 111 MacKenan Drive Cary, North Carolina 27511 tel: [phone] fax: [phone] www.withersravenel.com
Y

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- , t ~ ~ ~ ~ ` ,
, ~ ~ DRAINAGE EASEMENT CLASS ,,~0 IP-RAP 1 , _ _ ~
' ' ` ~ DB 2000 PG 2238._1,.39 ~ ~ ~ ~ ~ DISSIPATOR PAD _ _ - ~ _ , _
~ , _ - , ~ ~ ~
U F7 ~ , ~ SE LTER FABRIC _ ~ ~ , ~ , ~ , , ' ~ ` UNDERUNER W` , _ , E A~ , ~ , ' ~ ~ ~ ~ C~ A C~ ~'v ~ A ' _
- ~ , 1 ~ ~ ~ ~ , 1 \ ~ 1 , 7~'~A6ITTARI OLIA ~ j' JC~NGU
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. , , i ~ ~ , x v , ~+i, ~ Y--.. , 48 5fi7r~>gN~A AQUATICA , " , , , - "
~ - :sa 6 , 31 11YMENOCALLIS CAROTIN( NA ' ~i96' CIRP PUN N ` i _ v \ ~ US -
~ , 3 i ~ . - ~ , v v , ' ' 3 p NIOUr~4 VIi~GA`fU ' ~ ~ _ , •
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~ 5 ` ~ . ~ ~ . \ . ~ i . , iii ii
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l \ i . . ~ ~ i ~ ~ ' ~ ~ ~ ~ , ~ \ t t 1 , N ~ , SAURUJ~-C~R-~-----~-~--~____ ~
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1 i i ! ~ ` ~ _ _ - - _ _59 ~iRPUO PUNG€N5 ~ - " ~ _ s ~ , , ~ ~ _
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. , ' ' ` ' , 1, { ~ ~ ~ I I . ~ ~ ~ ~a. i ; ' , ~ i I ~ i , ~ ~ ~ ~ . i , _ ~ ` , , , , 1 , ` 1 / ~ ~
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. 1 .W N ~ - ` D ETLAND P to , N LAN EXI~END ` i r' y I f ~ ~ ~ i 1 1 ` L - w ~ ~ ' ~ i z I l~ - i , 1 ' 1 1 1 , , ~ i ~ ~ ~ MARS , i ~ i \ , ,
_ A . I ` • - . ~ , , v , , i I , 1 ~ ~ i ~ ~
` i •i , - \ j HIGH MARSH
~ Summary IrTfomra0on ~ , 1 , 434 - - - _ _ _ i Cornerstone Palk ,
i Extended Wetland Detentlon Pond 4 -Lot 7 ' ;
• Storm t3peak Qpeak Max. Max. y i ' _ ; 1 i ~ i • t ~ \
432 _ , Frequency In Out WSEL Pond S6orage ` ; 1 _ _ _ ' , ` _ _ , _ r. ds + , , ` MICRO POOL E ~ \
, ~ ~ ~ 300 SF
430 - f - E~ 2 4.40 2.74 426.87 0.125 ' PROPOSED GRADE ~ ' ~ , H 10 5.79 4,84 427.04 0.140 • ' ~ FORE BAY \ ~ ~ ~ ~ LOW MARSH ~v 315 SF v Av
1, t~ i I 1 ' AL . _ - A~R~ Of EL=4 .0 TO ELEV 4 100 7.01 520 427.48 0.180 ` 600 SF , ~
428 _ - - - !t 1 ~ t :t '~t i t , '~1 /
- S 1SAT3' ' i Elevatlons ' / ~
426. I i _ Basin Botton Elevation 423.50 ft.
N jlOly ,pp Permanent Pool Elevaton 425.00 ft. ELEYA 15 `I, ~ ~ 'i I ' ~ HIGH MARSH
424 ~ -SEEP COLLAR; ~ Crest Elevator 426.60 ft. ' ~ ~ ; , , ~ ~ ~ ` ~ 1228.35 SF
' , , - - S€E 9~7AIL) + - - TAT of Dam Elevation 428.00 ft. - - C NO RI - ~ __QNC_RETE MAN...-LE ) , ' 1 1 ~ ~ ~ , , , ~ , ~ , \
422 _ _ _ ` • - _ 4'9 HB ,
INV - Areas Permanent Pool Surface Area 2285 aq.R ' ` , ` ~ ~ \ i
420 ~ Drainage Area 2.06 ac. ' GATE ALYE 1' 4 NRS ' \ ~ ~ \ _ \ ~ , ~ ' ~ i_ ~ \ .
Impervious Area 127 ac. ' , ~ ` V ,
CLASS ~ au _ _ - , 418. i r0 ~ I~ r - - _ _ _ , 1
0 1.15 SLOPE Other Parameters DISS ATOR_ P_A0 24 THICK. , iB Design Rainfall 1 in. runoff ! . ,_---~----.-.ti.,.-~ i i ;
USE FlL R FABRIC U NER 5 x 5'W x ANC WHOLE AT MIST 416 ~ _ - psi C(~K 12" I CONCRETE F 11NG Drawdown Device Skimmer 1, ' - , , ~ t -
Min. Drawdown Time Req'd. 48 hrs. 1 i_ ~ ~ ~ ~ - i i - i ~ . .
Min. Detentlon Volume Req'd. 0.104 ac.ft 1'I so Detentlon Volume Provided 0.106 ac.ft. ' ~ 'I
o ~ of op d~ DO ~ i i ~ 1,11 _ PLAN
N r-- N N N N N N N N N ' ~ t} d- d- et eh d' d~ d' ~ ` ~ AR -fit
Lot 7 Extended Wetlands -Pond 4 ~ j I 1 i ~ , ~ ~ - - i . _ 1 =10
Skimmer to Use; 2" >fkknmer wl 2" head ! ~ ' Volume to beDrained = 4,617 cu. ft. _ -
10+00 10+20 10+40 10+60 10+80 11 +00 Draw Down Time = 2 days
Orifice Area = 2.01 sq. in. NOTE NOTE.
~ ~ ~ Orifice Diameter ¦ 1.80 Inches THE CONTRACTOR SHALL SEED ~ z 1. 12 0 RCP SFWLL BE TONGUE AND GROOVE W/CONFINED 0 RING GASKET R SHALL SEED AND MULCH ALL BARE
RISER BARREL -PROFILE I~E1N AREAS EXCEPT IN AREAS WHER IN AREAS WHERE PUWT MATERIAL 1S CONSiRUC110N IS COMPLETE: SILT fENCE
Z „ MEETING AS111 C-443 LATEST AND JOINT OF ASTM-C-361 LATEST. PLACED AFTER CONSiRUC110N } 1 =10 HORIZ 2. KEEP 4' GATE VALVE CLOSED UNLESS THE NEED TO COMPLETELY DRAIN SHOULLI REMAIN IN PUCE UNl)I IN PUCE UNl)L GRASS H4S BECOME
~ 1 "=5' VERT ESTABLISHED. THE POND IS NECESSARY FOR MAINTENANCE PURPOSES.
c~
Z
Z u o VENT PLANT_L_I_S___T__
c7 SCREENACCESSIBLE THROUGH -
w ~'4 REBAR 12" ~ O.C. EACH WAY QUA SPECIES Common Name S acin DOOR - -
z PRESSURE RELIEF o 0 0 NOTE:
HOLES 1/2° D~. ~ ~ ~ ; o SKIMMER MAY VARY 17 Canna flacada Golden Canna 3' o.c.
~ PLAN VIEW o o TOP IS 10 GAGS CORRUGATED ' ~ N SLIGHTL Y FROM 69 Hymenocallis caroliniana Spider Lily 18" o.c.
o METAL OR 1/B' STEEL PLATE. W PRESSURE REIIEF FpLE'S MAY ILLUSTRATION 61 Ins virginica Blue Fla Iris 18" o.c. 9
H BE OMITTED, IF ENDS OF 57 Juncus biflorus Shore Rush 2' o.c.
WELDED FUUY~oPTE~N WHEN THE TOP IS ~RREL aTrAGNED. PIPE 7 Myrica cerifera Wax Myrtle 5' o.c.
plp~y~~ 1/2° PREFORMED JOINT rn FILLER, 12" WfDE
v CYLINDER a I2 CAGE 30 Nymphaea odorata Fra rant Water Lil 3' o.c. FLOAT 9 y
CORRI,GATfD METAL PIPE ' + ' ~ o ~ OR FAaRTCA1FD FROM I/8' 12" L PUTS. ~ 23 Panicum virgatum Switch Grass 3' o.c.
SiEE N raclcwE~D N 80 Pontedena cordata Pickerel Weed 18" o.c.
Att AROUND OUTLET END; CONNECTION 19" NOiES: 145 Sagittana latifolia Broadleaf Arrowhead 18" o.c.
i. THE CYlINOER MUST BE FIRMLY 8" TO OUTLET PIPE OR RISER FASTENED id THE rOP Of
g~ THE RISER. BAi 9 2. SUPPORT BARS ARE ATTACHED 2000 PSF MIN. NQ R P 89 Saururus / meaha~~ag~ BA REL IPE LONGER THAN SHOWN Cemuus Lizard's Tail 2' ~ t,~ll Pj`+'"sufi O.1i
2+' Br srRAPS eoLrED ro roP ELEI/ATION SECTION BEARING CAPACITY of RISER. BENEATH COLLAR SU NOT INCLUDED WITH SKIMMER p ~~~,°~j'~ e„°~~~~'° 155 Sc~rpus pungens Three-S uare Bulrush 18 o.c. 4° a^~. ;~~I, ~ ag~ ~ w
F /6 x 12" SUPPORT BAR SIZE ~ SPACER BAR /8 REflAR SUPPLIED BY USER 4 ~ M ~°~ti~~'~ ~±y ~ y 8 Zizania aquatics Wild Rlce 18 o.c. ~ ~ a
t a m . ~ A "a ~ try - " d g - o
a FLEXIBLE JO , ~.i3-I ~ =LEXIBLE JOINT
~fi n.~'N .~Q~,A 4 ~~°e.GIN~.«» ti •eo..e~..~
= SECTION A-A N ANTI -SEEP COLLAR ~~r ~ °ro ~CIM ~ l.. , MER DETAIL , ~
ANTI-VORTEX DEVICE SKIMMER Di
Z N.T.S
NTS NTS N.T.S S
No. Revision Date B Designer Scale -
W&R AS NOTED
8 Drawn By Date CORNERSTONE PARK
JAC 11/28/01 EXTENDED DETE DETENTION WETLAND POND 4 LOT 7 WITHERS RAVENEL Sheet No.
Checked By Job W. RALEIGH, NORTH CAROLINA ENGINEERS I PLANNERS I SURVEYORS 8
8 KLJ 200147 111 MacKenan Drive Cary, North Carolina 27511 tel: [phone] fax: [phone] www.withersravenel.com
Y

A A 18 PANICUM HEMITOMON 53 PONIEDERIA CORD T
i i I' I 0 CANNA FIACGIDA - 34 5AG1T1ARIA IATIFOLIA 39 ZIZANIA AQUATICA
a ( 47 THAI.IA DEALBATA
I ~ f 631RI5 VIRGINICA . r /
_ J N BIF R 46 U CU5 LO U5
~ ~ , 47 SCIRI j I, f 47 SCIRPUB PUNGENS ,f
~ ~ i + f f. y .+f
~ ~ + W W W W W f f++ f + +f + / /
~ ~.y - ~ 1 I ~ : , + + W W W W W W +f f f f
W W W W W W W + +f f + f
I I i. / / / W W W . + f + F~ / f f + < / / / / W
!I / / / y> / / / W W W
't / ~ I r ~ ~ ~ ~ ~ I ~ y y y W W W
~ ~ W W W W W W W W W _ %y: W W W W W W W '
/ - 1 ~ ~ , / W W W W W W W
/ / W W , 1
~ ~ , . . W W ! 6 NYMPHAEA ODORATA
~ , ~ I, ~ i; I ! CANNA FLACCIDA
J \ i ~ ~ ~ i 95 SAURURUS CERNUUS ~ ,
\ l L 1_ 42 PONTEDERIA CORDATA i I_ 1. 1
i _ i ~ ~ , \ _ Z _ L 9 NYMPHAEA ODORATA ' L L_ L
' / i ~ ~ ~ ~ 39 IR15 VIRGINICA
- ~ ~ _ ~ ~ - ' +404.5 + ~ ~ ~ ~ , 25 SAGITTARIA LATIFOLIA 40 HYMENOC,ALLfB CAROUNIANA ~
, ~ { 41 HYMENOCALLI9 CAROLINIANA ~ ` ° ` ` ' '
- ~ S M~ ~ ~ i ~ 13 SCIRPUS PUNGENS 21 PELTANDRA VIRGINICA
~ _ , 4 MYRICA CERIFERA
a ~ --1 . _ . PLANTING -PLAN VIEW 23 PANICUM VIRGATUM
/ oo ~ a , I R o , 1 1 "=10'

::,,.:..r - ~ I ' ~ ~ _ ~ ~ ~ , , - ~ ~ i
~ I ~ ~ - _
. ~ , , : 48"~ i ~ i i
~ A , / . ~ I ~ ~ ~ ; ~ RISfR W SH ~
; i ~l ~ . ~ ; , ~ RACK , ~
r ~ ~ / . - ~ ~ ,
_ ~ 2 _ r ~ i , ; - ~ i
1 ~ P , LOW MARSH
; r~M . v A...:. 640 SF
w.~~ ; .`a ~ ~ ~ ~ ~ A c ,.-n' : ~ - - -l yam' " /
~ ~ 0 0 , ~ 44 12 RCP, , ~ .5~X ~ _ `r ~ ~ oPd oo III04 f / ,r
HIGH HARSH
i S , 1 v0 j 1,015 SF
~ ~ CLASS B ~1P RAP G ~ / ~ ~ r
~ NV 391.00 DISSIPATOR PAD ~ ~
/ , .
/ USE FlL IC ~ FL ~ - _ ~ FORE BAY MICRO POOL 310 SF ~ 500 SF
' UNDERUNER , , ~ NDED DET N110N WET~A , ` ONQ PLAN XTE E ~
_ _ _ V ~ ~ =20 ?

~ ~ ~ ? \ -
i / ~
- lS~cE IETN _ Sunrrwy NtomlMbn { - Comenbrre Perk _ OPERAIMIG / ~
Extended VYellerrd Detention Pond - Eat T ~ / , ~ ; PLANTING AREAS -PLAN VIEW
410 M EL=409.0 _ CHABL ' - stoml speak speak Max. ax. TOP i i 1 =10
_ =4172.80_ Frequency In Out WSEL Pond Storage / _ ~ _ _ ~ ~ - ac. . i
~ 2 - - - + T TO_ RISE _ 2.81 407.98 0.153 406.0 2 528
STEM 1 T ~ ~ 10 8.14 5.17 408.08 0.181 PROPO ED t~iADE 1 E _ _
- - $~~TS AT = PDOL 100 12.18 9.57 408.19 0.174 4os o~c e~RREr_ PLANT LIST NOTES: ~ LIST _ - - - - LOW MARSH AREAS SHALL BE 9 -18 IN DEPTH.
QUA SPECIE____ - - - - Common Name ROOt S acin HIGH MARSH AREAS SHALL BE 0"-9" 1N DEPTH. SPECIES
404 _ Elevetbns i "
- 4x4 TEE Baekr Bolton Elevation 404.51E _ ^ tl 408.01E 21 Canna flacc - Pertnenenk Pool Elevebn flaccida Golden Canna 3 Gal. Cont. 3' o.c. Canna
402 _ _ OETN 4 D!P - - Croat Elevation 407.8 R _ _ _ RECAST ~ $1 Hymenocall
_ ~ _ ~ T of Dam Elevation op c Ilis caroliniana S ider Lil Quart cont. 18" o.c. Hymeno a p Y
- _ 102 Iris virginica 400 _ - . _ i Blue Fla Iris Quart cont. 18" o.c. Ir s v~rgirnca g
- _ _ " Areas - - 4 Juncus biflo _ _ , 4 9 HB Penneneni Pool Surhoe Area 2,885 sq.ft. 6 . n s biflorus Shae Rush 3 Gal. Cont. 2' o.c. Ju cu
- T 225 ec. _ R MANHOLE T IF.AS AN 0 Drein a Area . 398 _ • SLUE _ _ ~ 4 Mynca cenfi M rica cerifera Wax M rile 3 Gal. Cont. 5' o.c. Y Y
_ ! X91. T2" 1NTO Impernous Area 1.51 ac. a odorata Fra rant Water Lil Bare Root Liner 3' o.c.
_ 5 Nym sea CON FOOTING 396 - • ~ other Parameters Nymphae 9 Y
18 Panicum he - - 2,~~ ~ SON Design Rainfall 1 in. run nicum hemitomon Maidencane Quart Cont. 2' o.c. Pa
DISSIP TOR PAD 18" ICK _ _ - _ _ Drawdown Device Skimmer 23 arncum rnr 394 ~ FIL FA~RI~ l1NC LINE nic m vi atum Switch Grass 3 Gal. Cont. 3' o.c. Pa u rg
Mln. Drewdown Time lgegb. 48 his. Peltandra vir inica Arrow Arum Quart Cont. 18" o.c. 9
Min. Detention VoMme 0.12 ac.ft. 21 Peltandra V ~ ~ ° ~ ~ a _ Detention Volume Provided 0.139 ec.fL g5 Pontederia nt deria cordata Pickerel Weed Peat Pot 18" o.c. Po e
~ ~ ° ittaria la ° g g ~ 59 Sag Sa ittaria latifolia Broadleaf Arrowhead Peat Pot 18" o.c. 9
Lot T Extendtad Weaa,ndlt 95 Saururus C Saururus Cemuus Lizard's Tail Quart Cont. 2' o.c.
Skimmer to Use: 2" Skimmer wl 2" head 60 SCir us ur Scir us un ns Three-S uare Bulrush Quart Cont. 18" o.c. P P 9e q
1+00 _ P P +40 10+60 10+80 1 Volume to be Drained - 5,227 cu. ft. 10+00 10+20 10 47 Thalia deal) Thalia dealbata Hand Canna Quart Cont. 2' o.c.
NOTE: - 2 a s „ ~ ~ Draw Down Time - d Y Y
RCP SHALL ~ TONGUE ANO GROOVE W/CONFlNED 0 RING GASKET _ 39 Zaania aqu 12 ~ Orifice Area 2.33 sq. _ Z¢ania a uatica Wild Rice Peat Pot 18" o.c. q
- PROFILE VIEW -C-361 LATEST. RISER BARREL C-443 LATEST AND JOINT OF ASTM ~ MEETING ASTM Orlflce Diame~r ¦ 1.72 Inches
1 "=10' HORIZ EP 4" GATE VALVE CLOSED UNLESS THE NEED t0 COMPLETELY DRA1N ~ 2. KE
~ 1 =5 VERT THE POND IS NECESSARY FOR MNNTENANCE PURPOSES.
Z VENT NOTE:
a W SCREEN ACCESSIBLE THROUGH THE CONTRACTOR SHALL SEED AND MULCH ALL BARE D00R AREAS EXCEPT IN AREAS WHERE PLANT MATERIAL IS
Z #4 REBAR 12" PUKED AFTER CONS)RUCTION IS COMPLETE SILT FENCE
~ A o A , O.C. EACH WAY w o o NOTE: SHOULD REMAIN ~ PLACE UNTIL GRASS HAS BECOME
J Y VARY ESTABLISHED.
~ " a o _ ~ ~ s SKIMMER MAY VARY ~,I ° SLIGHTLY FROM > 10P is 10 GAGE CORRUGATED I AAA
o ° ~ OR 1 8' STEEL PLATE. t c~ PRESSURE RELIEF o IETAI / MAY M ILLUSTRATION V
~ HOLES 1/2" DU. PRESSURE RE11EF FIOLES ~ eE arnEn. ~ EN0.S of
w PLAN VIEW rYT') OPEN~Mr1EN THE TOP IS BARREL
~ ATUClIED. PIPE 1/2" PREFORMED JOINT ~ NAMEI-ER RLLER, 12" WIDE
c~irrDER a 12 GAGE . FLOAT
~Ni1TED IIEfA1 PIPE ' ~ ~ OR FAaRICATED FROM I/B" O
STEEL PLATE. ~ 7B" N
J _ OUTLET END; CONNECTION ?N ~N•IgN~~
o A~ AROUND SINE CYLINDER MUST BE flRMLY T PIPE OR RISER 5• 1 ~ DF e" ro olmE rAS?ENED ro THE ER •'~'~H CARO BARREL PIPE LONGER THAN SHOWN ~a"o~,,.«••••«„~/
~ l?K RSER. 2. SUPPORT BARS ARE A1TpCHED 2000 PSF MIN, FESS1 ''9'y NOT INCLUDED WITH SKIMMER ~ ~ ~ Q t ~
d er srwws BOLTED rD roP SUPPLIED BY USER s E ~ ~ z
~ ~ ELEVATION SECTION BEARING CAPACITI' BENEATH COLLAR v
F- B x 12" I l~ x l I// ANGLE GR 15423
O SPACER BAR / • PIPE. 11/4 STEEL FLEXIBLE JOINT FMCINE~~` ~ •
N AIRCLOTH ~ 5~ MANUFACTURED BY F Rr a. JAY J
rt4t n~iu irn r1CTA a /7/1 M~NN1•N~•
animmcR arc h~~
SECTION A-A ANTI-SEEP GULLAK N N.T.S S/Zz ~y
ANTI-V012TEX DEVICE o NTS
Z NTS
~
Revision Date B Designer Scale No.
REVISION TO DWO PONDS & LEVEL SPREADERS 5110102 JAC W&R AS NOTED K 1 8 Drawn By Date CORNERSTONE PARK DETENTION WETLAND POND 5 LOT 7 WITHERS R"ENEL Sheet No. ENGINEERS I PLANNERS I SURVEYORS
o JAC 11/28/01 EXTENDED DET
RALEIGH, NORTH CAROLINA Checked By lob No. 111 MacKenan Drive Cary, North Carolina 27511 tel: [phone] fax: [phone] www.withersravenel.com
$ 111 200147

~ CLASS IRIP-RAP 10 Lx 6b
_ J . ~ n. ~ assrPAmR PAO LE1~EL
~ , f2Lz14 4 USE-
ARIIA?R SIDE SLOPES ' / USE FlLTER FABRIC . - TD ,S Z
CLASS 1 RfP-RAP 1 UNDERUNER ER ~ I
WITH FILTER \ 3 sa.T a F ~l1AIQERllWER i 9 ° ~
FENCE' ~ . ~ ~
Summary b Summary Information VENT
~ ..w_ Extended SCREEN ACCESSIBLE THROUGH Cornerstone Park
~ 45 if PVC Extended D Detention Pond -Lot 6 ~ _ DOOR
Storm Storm Qpeak Qpeak Max. Max.
i, Frequent / / \ Fre uency In Out WSEL Pond Storage NOTE: q
o ~ / yr• ~ ~ ac'ft_ SKIMMER MAY VARY 2 14.08 5.22 398.09 a.a56 TL Y FROM
° ° ° 6 SLIGH 10 20.24 14.55 396,27 0 50
0 1 3 / \ goo ° ° 21 398.58 0.567 ILLUSTRATION 100 30.20
° ° 97
p0° ° °°o°o _ INV / \
o ° , Elevations ° p° o ° - 1 f.5 \ Elevations
0 0° ° ° / ° o° °o o°q ° ° / / Basin Bottom Elevation 391.5 ff. FLOAT
° ~ ~ / Crest Elevation 395.75 tt. Top of Dam Elevation 397 ft.
,k / ~ ~ /
/ / / Areas Ares OUTLET END; CONNECTION
Permanent Pool Surface Area 0 sq.ff. TO OUTLET PIPE OR RISER BARREL PIPE LONGER THAN SHOWN
/ Drainage Area 5.30 ac. WITH SKIMMER NOT INCLUDED
~ / . MINER r Impervious Area 4.39 ac.
/ w ~ ~ / SUPPLIED BY USER
Qther ParF Other Parameters
0° ° 1 Design Rainfall 1 in. runoff FLEXIBLE JOINT
Drewdown Device Skimmer MANUFACTURED BY FAIRCLOTH Min. Drawdown Time Req'd. 48 hrs.
°g in. Detention Volume R 'd. 0.351 ec.ft. SKIMMER DETAIL M ~
~ Detention Volume Provided 0.422 ac.ft. M. T.S
l \
•
\
Lot 8 Extended Dry Detention Basin Skimmer to Use: 3" Skimmer wl 2.5"heed
. • Volume to be Drained = 15,202 cu. ft.
~ Draw Down Time = 2 days
- Orifice Area = 5.98 sq. in.
\1 I _ ~ ~ ` Orifice Diameter= 2.76 inches
I~ _ ~
~ I /
~ / .
1 ~r. - ~
~
- i
D PLAN VIEW DRY DETENTION PON
-
~ ~ =20 ~ _
400 _ _ _ -8.--- _ -
400
~ - - - _ - ?M~IER
398 oF DAill a 9~0 _ _ _ _ _ _ -
~ - -
- f L~IDE 398 _ _ _
394 - - ~ TIf COIVTRACTL7Ft SMALL s® ANO (IIUI.CH ALL BARE .
-8ET - AREAS EXCEPT N AREAS WHERE PLANT MATERW. IS 394 -
- PIACm AFTER COf~TRUCTION IS 392 _ _ _ _ _ _ REMNN LN PLACE UNm GRASS HAS BECOME' E - _
- - - - H9t ESTABLISHED. 392 - - 391, -
. • J90
- 11 4X ~ 1z it ~ rf _ _ -
VW _ _
_CLASS I_Rf _ 388 _ . _ _ _ _ _ - - - - _
IIflM~
38s _ _ - -
N N N N N "1
n O '1" c~ ~ ~ v: w ~ M M
Of Os ~ ~ ~
10+40 10+60 10+80 11+00 10+00 10+20
10+40 10~1~0 10+80 10+Oi7 10+20
NOTE:
" BE TONGUE AND GROOVE W GONFINEO BARREL - PROFlLE VIEW SKIMMER
PROFILE VIEW i. ie /RCP SHALL. RISER DARREL • ~ ' ' MEETING ASTM C-443 LATEST AND 1 "=10' NORIZ
= 0 RING GASKET 1 10 HORQ t "=5' VERY
' JOINT OF AST>rl-C-361 LATEST. 1-5 VERT
A ~ A
,ya REBAR 12"
O.C. EACH WAY 0
PRESSURE REUEF • ~ ~ 'r., ~ 2" PVC FEIIN.E AtNPiER ('fYP MISERY f1TrING
d HOLES 1/2 041. o o ; . ~ 11 x2 BUSI9IVG
tb o e LOP S 10 CAGE CORRUGATED ~ , : N cv PL4N VIEW , ~A< oR 1 siEEL PULE IN FROiII 12 PVC COUPLING ~
PRESSURE ~ NDLES wr a E1E 0?~TrrED ~ ErpS OF .
° fTELI>E'D prP) fwY a~ INO+ n+f roP 1$ PIPE n 12' PVC PIPE
~ ATrAC~ 1/2 PREFORMED JOINT DIAMETER FILLER, 12 WIDE
CYLINDER a 12 CND ' • ~ e
~ CORRIAaAIED YETAi PPE o OR FABRKAlEO TROY 1/b' I
STEEL PUTS •r , 78' v' ~1
iACKWELD
pp ALL AROUND 1y0~; 1. THE CYLINDER INJ,Sr ~ f1EiLY 1" PVC PIPE N ~
0 FASTENED ro TIE 10P aF -,I THE RISER. 2000 PSF MIN, ~ ~ cuiuP CIYP) E~ 2 PVC PIPE
z 2. per StPows~eoLT~m SECTION BEARING CAPACITY
uT ELEVATION BENEATH COLLAR a 1' F1EXI8LE HOSE SEA L
m ~ ~CER2E41R I i/~~ x i t l ANGLE OR 1!!423
~ I I/I STEE1 PIPE. DETAIL t0 OUTLET PIPE ~ ~ CONNECTION ~ tr' iNE ~
N E ASSDIB. '~R ~ P/V71' Of SKI~MIER DEVIL r JAY J
C1
TioN A-A NTI-SEEP COLLAR SEC _ _ _ A _ s/~ ~
~oc vK
ANTI-VORTEX DEVICE NTS
NTs a _ Sheet No.
F
r Date 8 Designer Scale No. Rev'sion - WdcR AS NOTED WITHERS RAVENEL rENDED DRY DETENTION POND LOT 8 ENGINEERS I PLANNERS I SURVEYORS 10
S i RENSION TO DWO PONDS do LEVEL SPREADERS 5/20/02 JAC Date CORNERSTONE PARK E END] Drawn By
r JAC 11/28/01 01 0 North Carolina 27511 tel: [phone] fax: [phone] www.wlthersrovenel.com 111 MacKenan Drive Cary,
6 Checked By Job No. IGH, NORTH CAROLINA 0
C3
6 111 200147

_ _ _ ~ ~ - ~ ~ ~ 7 MYRIGA CERIFERA ~ , ~ /
„ , , r M~ ~ ~ ~ ,a ~ ~
% i " ~ r ~ , . S t , ~ , ~ ~ ~ 24 PAfyICUM IRG ~ i" N~ ~ , ~ iii' ~ ~ ~ ~ ~ / ~ /
1 ~1 ~y % ~ IF ~ 61 JIJAI,C,US~B i ~ ~ / ? - ` ~ 14 ~GI`~A~IA OLIA
~ 281RI5, RG(NICA ~ ~ i i, ~ ~ 40 PODi ~RV(C DATA ~
- / i , , ~ , . - ' - . ~ ; . , ; 5 SAGITIARIA IATIFOIIA ~ ~ ; ~I ~ I~GIN CA ' ~ ~ /i' y ~ ~
a. fir., V 1 ,~,,r,,1 \ ~ ~ ~ i ~ ~ ~ ~ ~ / ~ ~ ~ - ti , ' / / ~ i' , . / i , - . \ / • / , ; r ~ A ~ ~ ~i%, ~ _ ~ DORAT ~ i , . ~
Q ~ ~ i~ ~ 1J. ` i / ~ ,~~'~~y~ I~AROUNI j A ~ i' i"nk"., ~ ~ ~ ~ ~ ~ % ' l l
~'<<' ~ / ~ i' i~ , ~ , , , - - , ' ~ ~ ~ ~I i ' ~ i ~
~ - . "~171~ , S ~ ~ ~ RI5 V , , % ~ i ~ I , , - . , ~ ' / ~ ~ ~ ~ ~ i ~ /
r ~ i ~ i / ~ - . . ~ , i ~ ~ TA ~ i 19 NYMPHA~A OD(~RA /
, , ' \ _ ~ - ~ , ~ ~ 2~7 P UM V RGATUM
r ~ V j ,i~ / V ~ f%" l " ' , ~ - ~ ~ ~ ~ ' „ ~ ,V ~ , ~ A 36 SAKI ARIA ~ . . ~ ~ ~ ; IRPUS GEN~ V~~ ~ I I P ANDRA, A ~ % 48
/ i ~ ~ , , ,~.A \ ~ ~ ~ a"Y r. i ; ~ ~ I ~ I1YM AILI AROLINIANA , 23 RIB, • • •
V'\ ~ 'SILT FENCE`' : „ ~ MANN F DA ~r
.x. i ~ ~ tk ' 26 PELTANDRA VIR6INICA - VDRAVIRGINICA ~ ~ ~ ~ ~ . ~ , , ' , ~ ~~13 Tf1All D BA r . Q A~~ i
r , ~ , ~ r l ~ y , ~ - ' ~ 61 ZIZANIA AQUATIC „ ~ - _ AA ATICA •,r Q Q ~ ~ r' ' ~ 495AURU U UU5 ZIZANI QU Q }#YMEN ~A~(~ B~; .
~ . .:~4°-~ ~ % - ~ ; <<~, 64 PONTEDERIA CDR[ - , • . Q ~ Q , , • ~ ~ ~ ~ ~ I 0 JU OR • ~ PONTEDERIA CORDATA Q
, / A > ~ ~ - ~ _ ;
/ ; ~ ~ ' ~ ~ 30 NYMPHAEA 01 i - 30 NYMPHAEA OD TA ~ 17 ZIZ U A ~ ; ~ ~ • , , i i ~ ' , ~ ~ 4 EN CAROLINIANA
- i J[( , / ~ . / 7.~. / / ' / • ~ ~ ' / 20TH D
/ / a ~ 5C / i ~l SCI 5 PUNG ~ ' • Q a ; ` ` Q 15 AU S GERNUUS
i, •5 ~ ~ i ~ ~ , ~ 19 19 CANNA FIACCI '
- ~ i ~ ~ 49 _ , 49 SAURURUS CERNUUS ~
~ ~ ~ , ' ~ i , i; ~ ~ ~ /i ~ ~ ; . , ~ ; r ND 2 , , i ' , 44 JUNGUS BIFLORUS ~ ` ~ ~ " ,..,..:r:.......:;..
i! .r , ~ ~ , ~ ` , 17 JU C 5 IFLORUS 59 ZIZANIA AQUATICA ~ ~
~ ~ k ~ % , ;r ~ ~ ~ , f 17 TYPt1A ANGUSTIFOLIA __43~,`` - 87PONTEDE IAC RDATA
, " i - / ~ A _ , ~ ~ ~ ~ 20 SAURURUS CERNUUS SA~IIT'(ARIA F IA
s _ , POND . ; ~ ~ i ~ ~ ~ ~ i , i~ , . Z71RI~ bIR~INICA NTING -PLAN VIEW PLA
. , . ~ 39 PELTANDRA VIRGINICA "
T \ ~ pp ~ , . e V t K ~ ~ t A ~ i U 0 UM G
YOB V l \ , , , , J _ • ~ i ~ ~ , ~ - r ~ , , ~ i,, ~ A
. , - ~ ~ ~ , ~ ~ ~ , -
: - SKIMMER
i ~ _ ' , k---'' f / ~ ~r. ~ , i_ ~;A ~ i' ~ j ~ ~ 'BAY ~ i ~ ~ ; ~ - r
~ r,, ~ ~ ~ _ ; . © CONCRETE \ x ' ~ ~ ~ /
_ , ~ RISER-~W H , . , / ;FORE BA ~ / HIGH ~
I , _ , r , ~ ~ i i ~ i ~ 340 sf / i ~ ~ i ~ ~ % H / ~ / MARS /
1' / ~ ~ LF 24 RCP 32 s ~ ' , , ,.I , ~ ; , I ~ CLASS 1!I 0 0,~~~ i; ~ ~ % - ~ 180sf ~
~ . ~ ~ ~ ; : ~ o I ~ • : . _ ; NOTE: . o / LOW ' _
, - I; ~ ' " " CTOR SHALL SEED ANL a~ , FE ' ~ ~ 4 ' % SN ~ ~ ' MARSH ~ % ~ LOW MAR ~ SHALL SEED ANO MULCH ALL &IRE ; l , \ , i
~ 2 S _ ~ , I ~ ; _ - - , ; . ~ ~ `~o~,~ _ 40 AREAS IXCEPT IN AREAS WHER i , , . , ~i ' . E . ,a - , _ ~,i , : ; INV 4 ~ . AFTER CONSTRUCTION IS ~ ~ ~ 45 sf ~ \ ~ ~ 275 sf AREAS WHERE PLANT MATERIAL IS 6
' ~ . ~ ~ SKIMM ~ , PLACED TRUCTION IS COMPLETE: SILT , I , HIGH MARSH , . ~ ~ ; ~ NS . 887 sf ~
' ti ~ ~ ~ % FENCE SHOULD REMAIN IN PLACE , ~ moo. , r s, , ~ , UNTIL GRASS HAS 1NA ~ IN IN PLACE ' i~ ~ ~ / , ~ - IED• - _ ~ ~ ~ ~ ~ ~
_ . . ~ _ , ; , ; o " BECCME ESIABUSHED• ~ ~ ~ o-.. CLASS B Rip-RAP ~ - - - . , : - ~ / . - , _ ~ ~ ~ _ ~ ~ i/ ~r ~?i ~
` DISSIPATOR PAQ.... " ~.i i ~ i ~ ~ ~ . / i sus ~ , LOW MARS
" ..12 Lar14'Wx181,D 48 m CONCRETE ' 24" FES ~ . , ~ ~ . ~ ~ USE FILTER FABRIC _ . . T ; . ~ 500 sf i,
. . • , ~ RISER W/rRASH INV 428.00 . , , ; UNOERLINER - ~ ~ MIC
' ~ I RACK , ~ 32 LF 24 R~; _ , ~ , , _ . ' CLASS III 0 0.31 ~ ' ~ ~
i, ~ , - ~ 2 f i . , ~ \ LOAM ~ l l
- . EXTENDED-DETEN~ s.~~ ~ i i MARSH / ,
ION WETLAND POND - P~AN~- . ; . _ _ ,.a _ , , _ ..1 _2D ~ ICRO ~ i ; / / _ I I~~.. ~~~il
_ , _..a.: R 1
;~1 ~ AREAS -PLAN VIEW i ~ PLA
440 CP F~4AN6-~VH€EL 1 -10
_ _ VENT ANTI-VnR DEICE (SEE DEfA~. SCREEN ACCES 43 CREEN ACCESSIBLE THROUGH , ,
DOOR 438 OOR ~ ~ - -
5 i1~1V PLANTLIST _
_ - NorE, 436 =~•0 -F SKIMMER MAYVARY Common Name S~acinn~
_ sED roP of EL ~ - SLIGHTLYFROM QUA SPECIES.
- ILLUSTRATION 434 - - - - IHORtt1111 _ _
1 - GRADE__ _ - _ 1 ELEVATION 2.00 { anna flaccida Golden Canna 3' o.c. 24 C
432 ALONG -CENTERLa _ _ _ DETAIL menocallis caroliniana S ider Lil ° 18" o.c. 116 Hy P y
- - F~oAr " - i •o r E~ 432,0 F~oAr Ins vir inica Blue Fla tns 18" o.c. 112 9 9 eeeege
RISER A I 2' o.c. 132 Juncus blflorus Shore Rust- ~ ~ CARO •
_ - _ _ - - - - - _ - - - NV=4 8.10 Wax M rile 5' o.c. o 'tsslo''~•ti9
INV=428 0 OUTLET END; CONNECTION 25 Myrlca cenfera Y ~ ~ ti Q
428 ~ ~ TO OUTLET PIPE OR RISE - ~ BARREL PIPE LONGER THAN Sh - - - ~ 4" HB DED WITH SKIMMER VGER THAN SHOWN dorata Fra rant Vt'ater Llly 3 o.c. s E ~ ~ _ 65 Nymphaea o 9 VIrH SKIMMER SWItCh GraSS 3' O.C.
_ _ - - ---gO~~{' f R!$ER} NOT INCLU STE1X SUPPLIED BY USER $1 Panlcum vlrgatum 15423 ER „ ~
426 - - _ Peltandra vir inica Arrow Arum 18 o.c. ~ F ~ r 76 g $ NGI NEB ~ •
32 LF 24 "I RCP C - _ III 0 0.31x DPE BI.SE - -13-iFFTO-C e g '••..a• • 1 Pontedena cordata Pickerel Weed 18 o.c. Ry a
424 - FLEXIBLE JOINT -
- _ _ _ C RETE FOOTING - _ x~X~~__ 198 Sa ittaria latifolia Broadleaf Arrowhead 18 o.c. eaeeeeee 9
422 _ _ SKIMMER DETAIL _ _ _ _ 4" NRS GATE VALVE ' 1 7 Saururus Cemuus Lizard's Tail 2' o.c. 5
N.T. - - Sci us un ens Three-Square Bulrush 18" o.c. 126 rp p g
420 Powde Thalia 2' o.c. $ ay vZ- 33 Thalia dealbata ry
n Q N ~ ~ ~ ~ ~ ~ ~ ~ 7 Zizania a uatica Wild Rice 18" o.c. 13 q -
N ~ M
V• a} P
+40 10+60 10+80
10+20 10 NOTE , , 10 " E TONGUE ANO GROOVE W CONFINED 0 RING GASKET LN OPERATI G WHEEL ANTI-VORTEX EVlCE (SEED AIL)
HALL B ~ 1, 24 a RCP S ~ - VIEW -POND 7 OF ASTM-C-361 LATEST. 434 TOP OFD EL-433.0 . _ r _
- RREL PROFILE C-443 LATEST AND JOINT RISER 8A MEETING ASTM 2 =SEE CHAR _ SKIMM ~EYICE ~ DO CT TO _
z "=10' HORIZ "VALVE CLOSED UNLESS THE NEED TO COMPLETELY DRAIN 1 2. KEEP 4 GAtk 1 Lot 9 Exbnded Wetlands • Pa RT NANCE PURPOSES. Lot 9 Extended wetlands • Pond Wetlands< • Pond 2 4 2 ROP_OSED ~ _ _ _1 _ _ - - CREBT Ef 431.50 "A~.EL X43 :f7" 3 ALONG BA REL CENTERII - w d 1
1 5 VE THE POND IS NECESSARY FOR MAINTE Skimmer to Use: 2" SkMnmer wl 2" head Skimmer to Use: 2" Skl A _ -C _ _ • 2 Skimmer wl 2" hea _ , ft• - - E 430.0 ained - 2,966 cu XISIING GRADE - -
Volume to be Drained = 5,793 cu. fl. Volume to be Drain = ur e = 2 days 430 ~ LIN 4" DIP _ -
4 I?ER4R 12" Draw Down Time = 2 days Draw Down Time = c~ ~ Oriflce Area = Z O.C. EACH WAY Oriflce Area = 2.58 sq. in. - ce Area = 1.32 sq• in. _ _ .
E A A OrMce Diameter ¦ 1,81 Inches OrMce Diameter ¦ w ~ ~ ~ gameter¦ 1.301nches 8 ,a=--° _ rNV>~421. _ _ 42~ _ OF N=4 42 -
~ o 4 He 4$ ~_PRECA~ REINF RCEQ
~ I z e. e o o N 426 32 LF 24'~ CIASS m ~ fl.31~ SLOPE CONCRETE MA OLE RISER)
W "Y. W p O
Z PRESSURE RELIEF o 0 Summary Intomiation Summary I n NDLES I/2" Du. t3ARREl 424 _ P - _ _ _ ANCHOR.. LE AfitfAST C 6 RiPRA P STEM_SllPP01~ _ _ 1 TO _ FOOTJNNG
p)pE 1/2" PREFORMED JOINT Comeretone Perk Comeiatone PMc - DLSSIPAT PAD 18 _ ~ 2 IN ~9on Pab ~ to 9 Beeln ~2 AT 3 FROM BASE CON FOOTING
~ PLAN VIEW WELDED (11'P) DIAMETER FILLER, 12" WIDE Extended Wetland Detention Pond • lcl9 eeNn Al Exbnded Wetiend Detention Panel • 10199ae1n N 3tortn Qpeak Opaalc Max, Mex. SlOrn Opeak Qpeek ~ ~ 422 UBE FILTER.... ABRIC l1N _ _
tY , Frequency In Out WSEL Pond Storage Frequency In Oul W O od ws~ Pand s,o~epe ~8 l 8'W x 18'b) ~ RS GATE L VE s _ ~ n~-- e~.ft, USE ,500 psi CONC ETE
2 11.61 10.89 _ I ~ N 2 9.51 8.04 433,89 0.258 61 10.89 431.83 0.129 42D 86 20,49 432.15 0.143
10 1828 15.8 434,15 0.275 10 20.86 20.49 TOP IS 10 CAGE CORRUGATED METAL OR I/8' STEEL PUTE. 1pp 26.89 14.U 434.50 0.313 100 32.48 29.15 48 29.15 432.14 O.1B3
PRESSURE RELIEF HOLES MAY Cp p) N 01 lp ~ ~ ~ of a0 00 a0 0) Ci p r.+~~ r'+.~
~ BE OM117ED, IF ENDS OF B" CORRUGA110N5 ~ THE TOP IS Elevatlone Elevations N N N ~ ~ tlN• ~ ~ ef•
1B FULLY OPEN WHEN ATTACHED. ELEVATION 8ealn aotton Elevatlar 430.5 fl. Baeln eatron Elewlbn otton ENwlbn 428.5 ft. ~ ~ ~ enl Pod Elevelbn 430,0 ft.
a 7ACKWELD $ECTI~N Permanent Pool EbvelOn 432.0 fl. Permanent Pod Elevetlon All AROUND Creel Elevatlon 433.8 fl. Greet Etevatlon ~~yan 431.5 ft.
CriINDER IS 12 GAGE 436 fl. Top OT Dem Elwelon CQRRUGATED PIPE Top M Dam Elevelbn N OR FAaO'(it1ED FROM I/8" )em Elwelon 433 ri 10+00 10+20 10+40 10+60 10+
~ aATE, 2000 PSF MIN, A~ Ness ~eM Pad soneoe Nee 978 eq.ri NOTE.
BEARING CAPACITY Permanent Pool Sudan Aree 3,180 aq.lt. PermeneM Pad Sudeoe Nee 48" ieAree a.97 ARREL -PROFILE VIEW -POND 2 "RCP SHALL BE TONGUE AND GROOVE W CONFINED 'O' RING GASKET RISER B 1. 24 m /
v BENEATH COLLAR Drainage Area 3.18 ac. Drainage Area NOTES: rvlousArea 1.81 ac. ImperviousAree F• 6 x 12" " x 1 14" ANGLE OR 1. THE Crilf4)ER FIST BE FIRW.Y Irope oaeNee 0.65 ec.
0 PACER BAR 1 1/4. L PIPE. FASTENED TO THE i0P OF OBNr Parameters 1 "=10' HORIZ MEETING ASTM C-443 LATEST AND JOINT OF AStM-C-361 LATEST. ti~ 1 "=5' VERt 2. KEEP 4" GATE VALVE CLOSED UNLESS THE NEED TO COMPLETELY DRAIN
1 1/4 STEE ~ RISER. Other Parameters 1 In. NrldF Design RaFAeI N 2. SUPPORT 9ARS ARE ATUCNED Dealgn RaktlaN win pe1~ Skimmer THE POND IS NECESSARY FOR MAINTENANCE PURPOSES.
Q BY S)RAPS BOLTED 10 TOP Dravxlown Devke Skimmer Drewdown Devb DF RfSER. TI-SEEP COLLAR qg nre, Idn. DrewdOwn TMne Req'd. Qg ~ Min. Drewdown Tkae Rep1d. awKknm TMd Req'd. 48 hre. 4en0anVoMxrwReq'd. 0,084 ac.ri
nn,nnNnn ie.dd 0.130 ec.R Nln. Deten9an Vdurtw Req'd. L ,
Detentlon Vdurn~ Pnwkled N Std I IUIV A-A NTS Detentlor! Volume Pmuld~d . 0,133 eaR on Volume Prodded 9.055 ac -ft.
TI_VORTEX DEVICE - AN 0 -
NTS - - - - Sheet Na,
Date B Designer Scale No. Revision W&R AS NOTED WITHERS R"ENEL
CORNERSTONE PARK 1 REVISION TO DWQ PONDS & LEVEL SPREADERS 5/20/02 JAC Drawn By Date EXTENDED IDED DETENTION WETLAND POND LOT 9 ENGINEERS I PLANNERS I SURVEYORS
CBP 1 24 02 111 MacKenan Drive Cary, North Carolina 27511 tel: [phone] fax: [phone] www.withersravenel.com
Checked By Job No,
g KLJ 200147 -
Y

' ~ ~ RIP-RAP CLASS B
~ PAD DISSIPAtOR
' 8'Wx9b 191x USE TER FABRIC FIL
UNDERLINER
_4_____~_~.._

" r 4 MYRICA CERIFERA
12 ' FES o ~ OA _ INV `,428.00 ° VIRGATUM I SAURURUS CERNUUS 8 PANICUM - _
1~ 30 SCIRPUS PUNGENS _ 46 JU - _ _
~ o { `e._
, 0 . _ ' C/ 28 5A(tHARIA IATIFOITA _ _ _ 5 CANNA FLACCIDA -
_ ~ .
0 r" 0 ~ '0 • 0 _ . _ _
_ 0 ~ _ 0 r• ~ -
- _ _ - ; r r 5"~ Y " / l V' _
_ _ - _ . ~ ~ 5 ~ ~ ~ / ~ ~ ~ ti
~ 1 k r ~ W / ~ r ~a v y W W W W W W W W ++t + I ~ r S
1 'B" RIP-RAP`... J. - r + t + r + + + + + + / W W W W W W W W W + r++++++
PATOR PAD = ' ~ ~ 426. LF 1 RCP, _ ~ , W W W W r t+++++++ W 0' W W W W
W W W W W W W W W W W + W W W W W W i W W W W 6 HYME A U AN
USE FlL1ER FABRIC--~~~ y-- ~ 28 W W W W W W W •Y W *
DI~LIN~'_... . ~ - - W W W W W W W W W
\ / W W W W W W W W 25 5C1 P G 5 W + W W W W W W W W
W W W W W W i W W 'Y W W
8~ ~ / ~ / W W v v W W v W 33 SA 5 E UU
0 l + / / W v W W / W
o _ _ _ SKIMMER i i W W W W I W W W W 4'
428,5 it \ W W W W W W W I I~ ~
oho ~ ~ / i I W W W W W W W I ~ f i
» ° ° + V / / 1 k~ ~ / / / I / / ~
I o 1~ 8.5 / 0 0° ~ % / , .
o + - ATICA IA AQU
42 ~ ~ ' ,i _ _ ~ - " - 3 THALIA DEAIBA
2 ~ 30 THALIA DEALBATA 297 PONTEDERIA CORDATA
_ Y 33 5AGITTARIA LATIFOLIA ~ _ A \ ,`,h __._--~~-5~1RPi15PUNGENS _ _----SAURURU~CERNUUS
, _ ~ _ B 428.5 + _ _ _ _ _ _ . _ . _-.___.____..11~PA1~GU~~RGATUM 45 NYMPh1AEA C~UORATA,
43Q ~ - - _
- ~ _ 53 IRISVIRGII
~ - .Y , P N _ P ~ _ _ _
= - _ ~ _ _ _ =10 _ _ _ _ _ _
y _ _ ~ ~ _ , - .
~ _ - ~ ~ l
~ ~ _ L% 1. ; . i'
- ; _ \ - _
_
Jj ~ - ~ ~ r
~ i , ~ ~ , ~
~ ~ . - = _ , -
VIEW
D POND 1 - ON WETiAN DETENII _ _ _ _ - - ~
~ =10 _ ~
Summa Irrtortnation ry i - - ~
Comerstane Park j~
NOTE' Extended Wetland Detention Pond 1-Lot 10 HIGH t~RSH ~
PLACE STEM Storm Qpeak Qpeak Max. Max. _ _-ANTI-VORiIX OEVICJE - ~ 3=-__ _ . _ - _ _ uenc In Out WSEI Pond Storage SF _ 9~5
- Freq y _ ~ ~ a . . - _ - ~
_ - - - 2 3.95 3.58 430.50 0.101 434 5~1 N5E1
GRADE - - 10 5.34 526 430.57 0.106 IMCRO POOL
Ate' ~ ~ Q 0 4~•O 6.30 430.72 0.119 432 _ 100 10.11 FORE 9~IY 300 SF 300 SF
4" ~ 1 -
-
- - _ _ Elevatlons
-~SEE_DET Basin Bolton Elevation 427.5 . 428 - _ - _ - j 4 Permanent Pod Elevation 429.0 ft.
_ ~ 430.3 ft. - - Crest e LOW I~SH 13(IO SF
. r:;.~ 4 X 4 lEE m Elevation 432.0 ft. 428 - Top of Da
-
_ - Armes . _ -
424 _ _ - - Pemranent Pool Surface Area 2268 sq. - - _ QI~(P PAD 24 _ . - _ 8 L x x 1
USE FILTER ABRIC ~ - Drainage Area 2.74 ec. _ 0.99 ac. r ^ /l P
422 _ - _ Impervious Area PLAN1~ G
_ \ - ~ 1 "=10'
420 Other Parameters N~ ql °p Design Rainfall 1 In.
ao ~ ~ ~ rro.' ~ Drewdown Device Skimmer ~ ~ w
~ N ~ N w ~ ~ in. Drawdovm Time R 'd. 48 hrs. N ~ ~ ~ M eq
w Min. Detention Volume Req d. 0.084 ac. NOTE
Detention Vdume Provided 0.086 ac.ft. THE CONTRACTOR SIWI SEED AND ALL &IRE
10+BO 10+80 10+20 100 . Porgy 1 10+00 1ot10 Extended Wedanda AREAS EXCEPT MI AREAS WHERE PUNT' INiERW. IS
Skimmer to Use: 2" Skimmer wl 2" head PLACED AF1ER IXHV51RUC110N IS CDYPl~71~ SN.T FENCE
NOTE: Vdume to ~ Drained = 3,652 cu. tt. SHOULD REIIUIW ~V PLACE lMllll GRASS HpS BEGONE ESTABUSHEO.
ND GROOVE W CONFlNED Tr,w = 2 days _ ~ RCP SHAH BE TONGUE A Drew Down VENT LE THROUGH
OFlLE VIEW 1. 12 RREL PR _ in, RISER DA ? ? AND - 1.63 sq. EE11NG ASTM C-443 LATEST o~ice Area • " 0 RING GASKET ~1 SCREEN ACCESSIB
1=10 HORIZ O~iflce Diameter = 1.44 Inch OF AS1M-C-361 LATEST, JOINT DOOR LIST PLANT
1=5 VERT Common Nam® S acin QUA SPECIES
NorE: IMER MAY VARY
SKIMMER MAY Vi Golden Canna 3' o.c.
SLIGHTLY FROM HTLYFROM 5 Canna flaccida
A ILLUSTRATION A . ~TRATION liniana S ider Lil 18" o.c. ~ 46 H menocallis taro p Y y „
~a ~ r2° Blue Fla Iris 18 o.c. 53 Ins wrgirnca 9
O.C. EACH WAY Share Rush 2' o.c. 46 Juncus biflorus
~j o 0 ~ 'r. R d PRESSURE RELIEF FLOAT Wax M rile 5' o.c. 4 Mynca cerrfera Y
~ ~ I Fra rant Wafer Lily 3' o.c.
e TOP LS 10 GACE CDRRUOA1rD • N PLAN VIEW , vErK oR I/e" sTEa. PIAJE. 45 Nymphaea odorata 9
n PRESSURE RELIEF NIDIfS wr • O a: GIYnED EIDS OF Switch Grass 3' o.c. 18 Parncum vir~atum ~NNECTION 18" O.C.
N OUTLET END; CONNECTIO colaRUCAnoas AAE LrFr BARRQ. ~ we.DED (nP) nxLr oPErl nlE ror' a PIPE 1/2" PREFORMED JOINT TO OUTLET PIPE OR RISER ria cardata Pickerel Weed OR RISER SHOWN 297 Pontede E BARREL PIPE LONGER THAN
An~• DlAM FILLER, 12" WIDE Broadleaf Arrowhead 18" o.c. T INCLUDED WITH SKIMMER 110 Sagittana latifolia NO
SER Lizard's Tail 2' o.c. SUPPLIED BY U 136 Saururus Cemuus
CriA~FR a 12 GAGE ' ~f i i ° ~ . O "i' O
FAeRlrwho~FROIr~iE/a` ~ ~ ~ y, N 78" SrEEII PLATE' • Three-S uare Bulrush 18" o.c. 87 Scirpus pungans p
r Powde Thalia 2' o.c. 9~'9 '"°°'B"&°~~'~~ aNT 42 Thalia dealbata +Y ®,~rt~~~~~,,~ FLEXIBLE J
d TACxwELD ALL ARDUNO 1 " NOIESr I. 1NE CY1XN)ER MU67 ~ flrrlY Wild Rice ~~°ba~ • ~~4 ,p, 60 Zizarna aquafica ~p rG?~acpy
FASTENeo ro n+E Tor aF 2000 PSF MIN. 0 n1E RISER. a~
, z 2• SuP~Rr ~ "RE """p'~ SECTION BEARING CAPAC C A1. ~ ° ~
~ sT~PS ~ ~ ELEVATION BENEATH COLLAR of RISER, 18498 Y /J.~, (gyp ~
~ /6 x 12" B RE[~R ~.~'CI N~;,~ I~ ~ °~oaex
F. SPACER BAR T
N N SKIMMER DETAIL , ,,,,1#e l/ d
TI-SEEP COLLAR z AN N. T.S
S~rrinN A-A
-VORTEX DEVICE NM
d Sheet No.
ffrs O
i; WITHERS R"ENEL DED DETENTION WETLAND POND I LOT 10 WIT 12
`°te Designer Scale o R AS NOTED o N0 ENGINEERS I PLANNERS I SURVEYORS
Drawn By CORNERSTONE PARK EXTENDED] 0 1 REVISION TO DWI PONDS & LEVEL SPREADERS __Y22002 Jac way Data ve Car North Carolina 27511 tel; 919-469-3340 fax; 919-467-6008 www.withersrovenal.com 111 MacKenon Dri y.
JAC 11/28/01
o Checked By Job No. RALEIGH, NORTH CAROLINA
°o KW 200147
U

~~_e~- ' _ ~
. ~ _ _ ~ -
• _ , \ 1 .
~ ~ ~ ~ ~ ~ 1091RISVIRGINICA ~ ~ ~ _ ~9CIRP!lSP-UNGE~lS
, . \ / _ ~ ~ , ~ ~ ,y~~~, ~ 53 SAURURUS CERNUUS ~ _ _ ~ y ~ ` ~ ' ~ . ~ _ _ y 2>D ~-AP11CT1M VfRGATUM
\ „ ~ ~ ~ ~ 66 JUNCUS BIFLORUS ' ~ ~i ~ , - \ ~ ; . ~ ~ . _ _ _A 23 SAURURUS CERNUUS
_ ~ ~ ~ 23~AGIT~ARiACA7IFOLIA.- ' ~
~ ~ , ~ > . ~ ~ i ~ ` 3~tk1RURU-5 CERN~II~~ ~ - ~ ~ . _
~ ~.z.. ~ ~ , .v , _ ~ f , ~ ~ _
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ A VIRGINIC P A \ ~ ' ~ ELT NDRA
V ~ ~ _ ~ ~ - i' ~ ..M 7 SCIRPUS PUNGENS
~ \ H ~ _ ~ _ ~ ~u . . ~ , . „ - <
~ ~ \ ~ \ ~ ~ yr, . ,
CB9 ~ ~ ~ _
_ CLASS GRIP-RAP A ~ _ - - ~ ' ~ 52 JUNCUS BIFLORUS
~ ..m. DISSIPgTCR PAD \ ~ ~ w s ~ , ~ , . _ , ,
35 Lx12 Wx12'b 36 0 CONGRE7~' . `x. ~ M _ _ . - l1Sf FLIER FABRIC ~ ~ ~ RISER W~lyi'ASH ~ _ 41 SAGITTARIA LATIFOUA ~
:LlN NER ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ _ _ DERLI , ~ ~ ~ ~ RACK - - - , ~ ,a=.;~, : 26 ZIZANIA AQUATICA
,A ~ ~ , ~ _ _ . ~ , r - _ ~ - _ _ - ~ _ " ~ ~ 80 PONTEDERIA CORDATA RUS ~R~IUUS ~ _ ~ _ _ - 41 NYMPIIAEA ODORATA
? ~ ~ f V \V _ 585AGITTARIAlA11FOlIA
- ° - . ~ - . _ ~ NIEDERIA CORDATA PLANTING -PLAN VIEW 43 PO
. _ ~ - . 25 SAURURUS CERNUUS u l9 CANNA FIACCIDA ~ 1 -20
' ~ 911;~ ~ ~ ~ i,, ~ _ - \ 1 _ / 1 ~ - 9.3 _ 38 TMALIA DEAl6ATA 45 PELTANDRA VIRGINICA
- ~ W D I IV
e. 0 0 _ , . ~
o b o , , _ + ` ~ _ ~ . ~ y , , ,
8a .w.r 408.5 0 9 ~ ~ ~ \ . - . _ ~o - r + ~ ~ .:408.5 ° ~ ~ ~ i _ _ ~ V ~ v ~ ~ ,
! 0 ~ , , , . . 1 l1 + ' . 409.5 ~ 12 FES . ~ ~ r _ _ _ 40 _ a..., ~ ~ - . ~ ~ ~ ~ 4 . , - ' ' f------ . ~ i r~ ~ -
~ ~ - - INV 401,,~~~ ~ _ m~__ ( _ _ i ; , ~ _
• r ~
~ - ~ _ ~ . _ i ~ ,
48 LF 18 RCP, . ~ ~ _ ~ . V ~ _ CLASS III ®4.02' ° " y . _ ~ CLASS 'B' RIP-CRAP ~ • ~ - , ~ ~ , ~ ~ ~ 1 -
, , VA ~ ~
X18--------"'- , DISSIPATOR PAS . ~ ~ 20'Lxi2'Wx12' ~ ' ~ ~ HIGH MARSH _ , ~ y~~~ ~ ~ FORE NAY
- - . , _ _ _ US FILTER F148RIC ~ ~ 1,314 SF ~ ~ ~ ~ ~ ~ ~ ~ LOW MARSH 500 SF _ / 1
- ~ . m , . , . U~DERLINER ' i y i V ~ ~ ~ 8,~5 SF ~
SKIMMER i i . ~ /
~ ; ,
.r, ____.r--
~ 'S , - _
- i _
_
d \ ~ .
~ " ~ , ~ ~ ~ PLANTING AREAS -PLAN VIEW ~ _ _ _
"<< \ ~ 1 =20
V • ~ ~
T~ \
.

~ POND 2 PLAN VIEW • D DETENTION. WETLAND \ - ~ ~ `V =2~
V ~ PLANT LIST
~ e
n Name S acin QUA SPECIES Commo
414 TING WHEEL _ Summary Information 19 Canna flaccida Golden Canna 3' o.c.
NTI-VORTEX D CE SEE DET L L ~ _ - - - Cornerstone Park - - .SET` , 109 Ins vir inica Blue Flag Iris 18" o.c. 9
412 _ T -411. _ Q . - - • • • _ . • • _ • • , _ . , . _ _ _ Extended Wetland Detention Pond 2 _ Lot 10__ _ 118 Juncus biflorus Shore Rush 2' o.c.
t _ • - _ - Storm Qpeak Qpeak Max, Max. c.
410 T O RISER F uenc In Out WSEL Pond Storage 2. _ _ _ - - _ - (C4HNEC ~I v 6 M nca cerifera Wax Myrtle 5 o.c. o e Y m9
- - - - - - _ - - - - - - - - - _ TO E1EV 441.5 - S GRADE - _ --cfs cfs ft ac. PROPO ~ 41 N m haea odorata Fra rant Water Llly 3 o.c. Yp 9
408 _ _ _ _ _ ~ BARRE[ _ - _ _ _ LACE-STEM _ NORMAL POOL 2 5.68 4.17 410.70 0.183 i3 20 Panicum vir atum Switch Grass 3' o.c. 9
_ TS AT ~ _ _ _ _ _ 10 7.31 6.98 410.81 0.195 ~ vir in' Arrow Arum 18" o.c. 100 Peltandra g Ica
845E - - - _ - ~1-- 100 9.89 9.84 410.91 0.206 406 _ 4 ~-4 , 123 Pontedelia cordata Pickerel Weed 18" o.c.
4 x _ _ 1 _ _ -
404 - - - _ _ _ - SEE LIETAN. _36"m PR~A5- REINF {r~ Elevatlons 122 Sa ittana latifolia BroadleafArrowhead 18" o.c. 9
- - _ CONCRETE R ~ _ _ - _ _ _ - _ _ Basin Bolton Elevation 407.5 . 112 Saururus Cernuus Lizard's Tail 2' o.c.
_ _ - _ _ _ 402 _ _ _ I - : Permanent Pod Elevation 409.0 ft. 65 Scir us un ens Three-Square Bulrush 18" o.c. p p 9
- _ _ - - - - - Crest Elevation 41 .4 38 Thalia dealbata Powdery Thalia 2' o.c.
I =4 i. - n 411 ft. ANCHOR HOLE AT Top of Dam Elevatio 400 _
_ VAL _ _ rt?`1N1~ _ ~ _ _ 26 Zizania a uatica Wild Rice 18" o.c. Q
_ - FOOIl G Areas 398 CLASS I - _ _ ONCREIE
4" THI _I~_ 4,11E-_18. RCP_ 1~ASS . _.Q_ ~ 02X DLO _ _ Pemranent Pool Surface Area 2885 sq.ft. _Q SpAT4R_ PAQ ~
USE FLIER FABRIC NDERLINER _ - _ _ _ _ _ - ,~~--C~ - - - - - Dr~nage Area 3.56 ac. _ _
396 . - - _ Impervious Area ac.
Other Parameters
394 - _ _ _ D n Rainfall 1 in. runoff ~g
Drawdown Device Skimmer
~ 0 0 c ~ `O N ~ Mfn. Drewdown Time Req'd. 48 hrs. o M
~ ~ g Min. Detention Volume Req'd. 0.121 ac.ft. ~ ~ rn
~ ~ Detention Volume Provided 0.121 ac.ft.
- 10+80 11+00 ~ 10+00 10+20 -PROFILE VIEW
ISER BARREL BAY - R } VENT
~ 1 "=10' HORIZ SCREEN ACCESSIBLE THROUGH
1 ~=5' VERT DOOR
Z NOTE: a > > NOTE:
~ i. 18 ~ RCP SHALL BE TONGUE AND l 2 A o o A ONGUE AND GROOVE W/CONFINED O RING GASKET
MEETING ASTM C-443 LATEST AND 4 REBAR 12' - - T T. SKIMMER MAY VARY LATEST AND JOINT OF ASTM C 361 LA ES
w ~ cH war 2. KEEP 4" GATE VALVE CLOSED UNLE ~ O.C. EA w o IN NESS THE NEED TO COMPLETELY DRAIN SLIGHTLY FROM ~LOSED U L
THE POND IS NECESSARY FOR MA IRY FOR MAINTENANCE PURPOSES. ILLUSTRATION
PRESSURE RELIEF o 0 0 HOLES 1/2' DIA. p ~ ° ~
IS 10 DACE CORRUGATED N
PLAN VIEW ~ o ° ~ oR ,/s• srEEL PuTE. UJ PRESSURE Rf1JEF MOLES WY
= BE OMITTED, IF ENDS OF coRRUCaraNS ARE ~ BARREL FLOAT
WELDED (TYP) FULLY OPEN WHEN iNE TOP IS PIPE ~ ATTACHED. DIAMETER 1/2 PREFORMED JOINT NOTE:
FILLER, 12" WIDE THE CONTRACTOR SHALL SEE :TOR SHALL SEED ANO MULCH All BARE
~ crLINDER Is I2 DacE AREAS EXCEPT IN AREAS N+I DATED METAL RIPE ~ t. `1' o .PT IN AREAS WHERE PLANT MATERIAL IS T N OUTLET END, CONNEC 10
a D~ BRICATED FROM 1~ . ~ ~ PLACED AfTER CONSTRUCA( ER CONSTRUCAON IS COMPLETE. SILT FENCE
N sD" STEEL PLATE. , N SHOULD REMAIN fN PLACE U rac,,7vE~D ESTABLISHED. WN fN PLACE UNTIL GRASS HAS BECOME TO OUTLET PIPE OR RISER BARREL PIPE LONGER THAN SHOWN
ALL AROUND 18" NOTES: 8„ NOT INCLUDED WITH SKIMMER ~°~°~~d~mAS °(rg''~~ a~9~ r b~ L~ {d 1, p~
~ 1. THE CYLINDER AA1ST BE FlRMLY p FASTENED r0 iNE TOP OF 0~~~ t\ ~~""w..n p"n I'~W ~o SUPPLIED BY USER ~ ~ w~ a~
2 > ~ ~ ~ A~~~ 2000 PSF MIN• Lot 10 Extendl~d Wetlal BEARING CAPACITY ~(.S5 ~ .tended Wetlands -Pond 2 a ~
as' STRAPS ~ ToP ELEVATION SECTION d ~ RxER. BENEATH COLLAR Skimmer t0 Use: q ~ R a Use: 2 Sklmmerwl2 head SE ~ w a
h 6 x 12" ~{IPPORT BAR SIZE 8 REBAR Volume to be Dreu1e = be Drained = 5,256 cu. ft. ~ ~ 1$ ~g FLEXIBLE JOINT ~ , e, ~ ,
0 SPACER BNt ~ Drew wn Ime = J (TYP) t n Time = 2 days ~ " °
N Orifice Area = a Orifice Area - 2.35 s . in. ~/q// ~ ~ .Y
Orifice Diameter floe Dlarneter a 1.T3 Inches T 1. SKIMMER DETAIL
SF~Tlnly A-A ANTI-SEEP COLLAR
N ANTI-VORTEX DEVICE o NTS
Z NTS -
- - Date B Designer Scale N0. Revision W&R AS NOTED WITHERS R"ENEL Sheet No.
1 REVISION TO DWO PONDS k LEVEL SPREADERS 5/20/02 JAC Date
g brawn By CORNERSTONE PARK o JAC 8 01 01 EXTENDED DE1 a DETENTION WETLAND POND 2 LOT 10 ENGINEERS 1 PLANNERS I SURVEYORS 13
d Checked By Job No. KUEIGH, NORTH CAROUNA 111 MacKenan Drive Cary, North Carolina 27511 tel: [phone] fax: [phone] www,withersravenel.com
9 g - KLJ 200147

19 CANNA FLACCIDA
42 ZiZAN(A AQUAIICA 31 PONTEDERIA CORDATA
r l 120 SAGITTARIA IATIFOLIA 104 JUNCUS 61FL0RUS ~
93 PONTEDERIA CORDATA 81 SAURURUS CERNUUS
I 48 SAURURUS CERNUUS 1 ~ , ~ I 0 CANNA FLACCIDA
r 7 CANNA FLACCIDA ~ ~ 46 NYMPHAEA ODORATA
_ , 23 SAURURUS CERNUUS ~ " - _ ~ ~ 69 PONTEDERIA CORDATA
I 83 THALIA DEALl3ATA i
` ~ZLE~INA~IDA ~ - ~ 143 ZIZANIA AS~UaiJ6~c
, _ ;tUNCllS 611=1,fjRRU~ ~ ~ ~ ~ ~ ~ ` ; ~ b0 ~li~l1S?GN EN ~ I ~ r - _ L7 SAURUR . C€f~Nt1US I ~ ~ . ' ' 1171 ~ - -
~ , ' ~ ~ ~ 12 PANIC~vt IRGAT Y ~ ~ , ~ - , , 7~f0NTfDEC~iAC0RDATA I'I yx _ 1 II . Y - _ -
- I I I ~ I i 22 NYMPHAEA ODORATA- • • y - , I II ,~~,I • • ~ ~
I ~ ~ ~ _ _ ,,~,.I I ~ i ~ ~ , ~ _ 13AGi~AR1A 4~tIA ~ ~ ~ I I ~,F I., II
~r ' I ~ ~^x, rlllll~l'I illl ~I Y ~ ~I - i . , II I r ~ ~
~ ~ E 1 / I , • Y Y , ~ \ / / ~ r~-t 'i ~I I I II I • Y • . I ~ .
24"~ CONCRETE - ~ 31 PANICUM Uf RISER W/TRASH , • Y JI M f ~ II ~I I~ I / CI I ~ ? Y Y Y Y I l . . ~ i / • r ...r.
RACK . - 84 SCIRPUS U N ~IRPUS U N I Y,• YY Y• +Y+..,,.,..,.I~ ~ ~ ~ • Y Y • • 7 /
~ RI~ RAP' ;,,Y • C1ASS 'D' P-~ , I • • Y Y ? Y• I • ? • Y I I • • Y • • Y • YYY
DISSIPAmR FAD I • • • Y • ? ? • I~ I • • Y ••r ~ IFFDA I • r ? Y?Y • ~'I! L~~f1 .
30 L~ t~~5 0 ~ .USE Fl'CTER FABRI . ? . ~ i I I YYY ? Y ?Y? •YY I i I I Y • I
. ~ ~ ~ ~o _-_--:--396-_. ~ ~ , ~ ~ ~ ~ ~ ERLINER ~ ~ ~ ~ ~ - V ~ 1. ' I'I III ~I lII + • ~ I'I 1 ~ , . , Y'. ~ VIRGATUM ~ 1 _ II I I II , II Y ,I 1 ` ~ I II ~ I, ' l i p I I r l~ ~ r i .
_ ' ~ _ . - . ~ 1. ~ 1, 1 I I I I I lI I I I l (l l II I II 1 1 1 l~ I C I ,,'~~,II,,I,,~~,~'~~'~+'G+,'!', '.I, I,., SPUNGENS ~ ~ ~ r' II II IIII III I III It~I I .:S "d I III ~
~ Cy ~ - ~ ~ SMHt ~ „ ~ . r I _ rc r i V - ~ _ _ _
,90,0 •~•~•....\A ~ ~ ° ---m _ ` - ° - _ - -394 ~ ~ ~ ~ - ' ~ _ _ ~ _ -
- ~ ~ - ° , : _ - , , o ` ~ 73 JUNCUS BIFLORUS - 75 SAGtTTARIA.I~ATIF
- ~ _ , k ~ ~ _ + _ ~ ~i 44 SAURURUS CERroUUS 120 JUNCUS BIFLORUS _
. CIASS~~'B' RIP-RAP 38 9.b : ~ _ ~ ~ _ _ 15 CANNA fIACCiDA - _ 51 PONTEDERIA CORDATA
. °DIS:~IPAroR PAD _ _ _ _ _ 34 SAf ITTARfA tATIFOUA T G - PLAN V W . IE 24 SAGITTARIA LATIFOLIA ~ ; ,
X LxX'WxX'~ ~ ~ _ ° ° ° . INV 386.0 . ~ _ ~ \ ~ , 1 -zo
USE FItfiER FABr~IC~,. / ~ ° ° o ~ ~ 9.0 ) • UNDERLINER + I ° U
+ . ~Ox SKIM 3 + I °
381.5 ~ + ~ 387.5 I I " 1 i
C _ - 390.0 390.0 LASS Ill 0 X~ ~ ,
~ ~ ~ _ _
_ , _ ~
- _ - ~ ~ .
p, ~ ~ ~ _ ~ ~ \ ~ a--- i -
~ , _ j _ _ _ i - ~ ; 'HIGH, MARSH - _ ~ A, i ~
. ~ _ _ , 0 _ 3,60P~ - - , ~ , ' \ \ ~ ~
- - ~ _ 39O ril _ ; ~ , _ ~ . ~ ' i ~ ~
_ _ e ~ ~ _ ~ , ~ ~ ~
; , _ - ~ ~ _
~ , i ~ , ~ ~ / , ~ ; ,
I r..., ~ ~ . / ,
_
~ r ~ LOW MARSH \ 2270 SF
, ~ ; ~ ~ / MACRO pppl 'FORE Y
EXTENDED 0 , ,ENTI~N WETLAND POND 1. _ P V ,.W I LAN IE , ~ 860 S 815 SF
f „ , 1 =20 I i , r_ .
r . _ _ , / ,1 ~ ~ ~
~ ~ . _ / , , ~ . r ~ } i ~ ~ _ _ ~ _ _
_ _
NTT-VORTEX D VICE SEE DETA L 396 _ _ _ _ _ OPERA.. _ WHEEL: _ _ - _ _ _
MIN - _ W - _
tOP OFD EL 394.0 S L CONNEC TO RISER _ _ _
394 4 _ ~ TO EL
_ _ _ _ S-P NV _ i U IEW _
PROPOS D GR~4DE .1~`Sfi~`L=~92 6: _ _ 392 _ - _ _ ~ „ ,
ONG BARREL C RLINE 1 - - - - _ - _ _ _ - _ _ - NORkGtI ~ 1 =20
390 - - - ALONG BAR EL CENTERLINE -
_ - - _ - --8_QiI~_ ~4SIN=_3~.4_ _ _ IN 388.0 - PLANT LIST
~ - ~ s-b 388 - - - _ - , - _ NOTE _ .4~ 1!
- ANTI- -P-CALLAR ~6 0 PRECAST RE1lVFORCEQ QUA SPECIES Common Name S acin
- - 1. THE CONTRACTOR SHALL SEED AND MULCH ALL BARE _ _ SSE _ DE[AIL~__ _ CONCRETE MAN OLE RISER 386 - ~ ~ ARE4S EXCEPT IN
I RIPRAP AREAS WHERE PLANT MATERIAL IS ~ _ NOTE PIACED AFTER CONSTRUC110N IS COI~LEfE 72 Canna flaccida Golden Canna ' 3 o.c.
PLAC STEM SUPPOR S 356 Juncus biflorus Share ~~ush 2 o.c.
384 USE..FILT FABRIC._uNDE LINER ~ 2. SILT FENCE SHOULD REMAIN IN AT 3 FROM BASE. PLACE UAmL GRASS HAS 8 Myrica cerifera Wax rtie Y 5 o.c.
" BECOME ESTABLISHED. -_4 x4__TEE _ 30 LF 2 "b RCP CLASS ! 0 1.33X SL _ - _ 68 Nymphaea odorata Fra rant Water Lil
CONCR FOOTING ANCHOR_ NHOLE AT LEA T 382 - _ _ _ ~ _ 3. USE C-350, NORTH AMERICAN GREEN, EROSION CONTROL 9 Y 3 o.c. 58 Panicum virgatum Swl"tch Grass
x 8 x 18"D 12 INTO NCRETE F 0011 G MAT ON FACE OF DAM SLOPE FR TOP OF 3 o.c.
_2,500_ r-C OM BANK TO 4~ NRS GATE VALVE cResr. 423 Pontederia cordata Pickerel Weed 18 o.c.
380 308 Sagittaria latifolia BroadleafArrowhead " 18 o.c.
213 Saururus Cernuus Lizard's Tail 2 o.c.
O 0.1 co ~ o~ ^ O o~ ~ ~ ~ T\ r\ ~0 N Op r\ 124 Scirpus pungens Three-S uare Bulrush
QO o0 a0 a0 ~0 ~0 DO o0 00 p 18 o.c.
~ ~ ~ ~ ~ ~ Summa Information ry 83 Thalia dealbata Powde Thaiia ry 2 o.c.
- Cornerstone Park 203 Zizania aquatics Wild Rice p 18 o.c.
Extended Wetland Detention Pond 3 -Lot ;ion Pond 3 -Lot 10 k _
Z 10+00 10+20 10+4o NOTE: ~o+so 10+80 storm speak -capes ~ ~ , , Frequency In Out Qpeak Max. Max. Out WSEL Pond Storage
Z RISER BARREL BAY 2- PR FI V 1. 24 o RCP SHALL BE TONGUE AND GROOVE W/CONFlNED 0 RING GASKET 0 LE IEW r, cfs ft. ac.ft.
MEETING AS1M C-443 LA cfs cfs , TEST AND JOINT OF ASTM-C-361 LATEST. z 1 10 HOR1Z tz.a~ 5.94 ~ 5.94 392.60 0.451
> ~ 2. KEEP 4 GATE VALVE CLOSED UNLESS THE NEED TO COMPLETELY DRAIN ~o ts.os ~z.Ts 1 -5 VERT 3 12.76 392.83 4.502
~ THE POND IS NECESSARY FOR MAINTENANCE PURPOSES, z2.za 2o.a5 c~ ~ 20.45 393.05 0,551
z a
w z A o A Elevations
~ Basin Bolton Elevation Ion Elevation 388.40 ft. VENT
Permanent Pool Elevation it Pool Elevation 390.7 ft.
w ~4 REBAR 12" wz o O,C, EACH WAY Crest Elevation SCREEN ACCESSIBLE THROUGH +ation 392.26 ft.
? PRESSURE RELIEF o e ~ TO of Dam Elevation p HOLES 1/2" DIA. DOOR m Elevation 394.0 ft.
~ u e s NOTE:
N FLAN V ~ ° areas ~ IEW a o rDP Is TD cACE CORRlM1TFD i SKIMMER MAY VARY
_ ~ NErAL oR I/a' srEa PuTF. ,':.'~t. N Permanent Pool Surface ~ PRESSURE RELIEF HOLES NAY it Pool Surface Area 6285 sq.ft. SLIGHTLY FROM
BE oNIrrED, IF ENDS of Drainage Area w>7DED (mil 00~"o"nONS ~ BARREL Im ervious Area Area 7.36 ac. ILLUSTRATION
FULLY OPEN WHEN iNE iOP IS PIPE p ATTACHED. DIAMETER 1/2" PREFORMED JOINT s Area 3.39 ac.
FILLER 12" WIDE ~ Other Parameters rn
r cv~INDER ls's cA~ Design Rainfall CORRUGATED NEUL PIPE iinfall 1 in, runoff
" OR FABRIGIED fRON 1/B' c so' sTEEL PurE. ' ° Drawdown Device i Devks Skimmer FLOAT
$ rACawELD t N Min. Draw ' ~ Au AROUND ~ ~ ~ down Time Req down Tlme Req'd. 48 hrs.
" le Norrs: Min. Detention Volume Re ition Volume Req'd. 0,285 ac.ft.
o i. iNE CriINDER MUST BE FI4IALY FASTENED To TT1E roP of 8" Detention Volume Provide Volume Provided 0.285 c.ft. OUTLET END; CONNECTION ~___-._______--_-.--a TOOUTLETP tlA,~~~,~;Cp~
THE RISER, ri 3s• 2. SUPPORT BARS ARE ATTACHED 2000 PSF MIN. IPE OR RISER 4~mx, y,,, o,~~ BARREL PIPE LONGER THAN SHOWN u°"~ ~`"~~~~~~z',><':;~~~•p
~ ~TRAPS BOLTED i0 TOP ELEVATION SECTION BEARING CAPACITY 4 NOT INCLUDED WITH SKIMMER ~~Y ~ ~;~id
o /s x T2" SUPPORT BAR SYZE BENEATH COLLAR Lot 10 Extended Wetlands - SPACER 84R N8 REBAR +,f L~.Y .r ~yY nded Wetlands -Pond 3 SUPPLIED BY ~ ~'.Y
(n'P) Skimmer to Use: 3" Ise: USER 3 8klmmer wl 2.3 head ~ ~ ` ~~.A~.
a Volume to beDrained = Draw Down Time = Drained = 12,413 cu. ri. ~ e ~ 0 ime= 2da
x SECTION A-A 0~ Area = _ ~ FLEXIBLE JOINT n.F , )riAce Area - a.88 sq. in. p, ~~y ~'G I N~~•°~ c~`~
N Orifice Dlamebr ANTI-SEEP COLLAR sDlamebr= 2.491ncMe °s.,~'~` rry
ANTI-VORTEX DEVICE
z SKIMMER DETAIL
NTS NTS c~ L- ..S
No. Revision Date B Designer Scale 1 REVISION TO DWO PONDS do LEVEL SPREADERS 5/20/02 JAC W&R AS NOTED
g Drawn By Date CORNERSTONE PARK
s CBP 1/24/02 WITHERS R"ENEL DETENTION WETLAND POND 3 LOT 10 Sheet Na.
Checked BY Job No. EXTENDED DETF RALEIGH, NORTH CAROLINA
KLJ 200147 ENGINEERS I PLANNERS I SURVEYORS 14
MacKenan Drive Cary, North Carolina 27511 tel: [phone] fax: 919.167{008 www.withersravenel.com