20051280 Ver 2_More Info Received_20080630

• Soil & Environmental Consultants, PA
11010 Raven Ridge Road - Raleigh, North Carolina 27614 - Phone: [phone] - Fax: [phone]
www.SandEC.com
June 30, 2008
S&EC Project # 3057.P4
DWQ EXP Project # 05-1280v2
Department of Environment and Natural Resources
Division of Water Quality
Attn: Cyndi Karoly/Lia Myott Gilleski
2321 Crabtree Boulevard, Suite 250
Raleigh, NC 27604
Re: Reply to the Division of Water Quality's Request for More Information
EXPRESS REVIEW PROGRAM-Tryon Village Townhomes
Cary, Wake County, NC
To Mrs. Karoly and Mrs. Gilleski:
The purpose of this letter is to respond to your Request for More Information letter dated June 25, 2008.
The original questions/requests are copied below as they appear within letter and are then followed by our
response.
Additional Information Requested:
Diffuse Flow:
a. The outflow calculations for FES 1A indicate a pipe outlet velocity of 9.78 fps. It is agreed
that the outlet is sufficiently protected but the velocity of flow is likely to be erosive even
after leaving the dissipater pads. We recommend that a further slowing down of the water
is required by installing a plunge pool of 1' minimum depth and sufficient length, width and
slope at the end of the pipe instead of a flat dissipater pad.
Please see attached rip rap lined plunge pool calculations, design and revised Storm
Drainage Plan (SW-2), Grading Plan (SW-3), Stormwater Management Details (SW-4)
and Level Spreader & Details (SW-5) Maps.
We anticipate that this answers all of the DWQ's questions in order to complete the final review process
requested for the written Riparian Buffer Authorization. If you have any further questions or any additional
explanation is needed, please don't hesitate to call.
Sincerely,
t
Debbie Edwards
Environmental Specialist
CC:
Mr. Randy King-Pulte Homes-Raleigh
Mr. Ken Jesneck-Withers & Ravenel
Attachments:
1) RipRap Lined Plunge Pool Calculations & Design
2) Revised sheets SW-1, SW-2, SW-3, SW-4 and SW-5
`i 4e
L
W01?,,lDS P.NC 5?0.
Charlotte Office:
236 LePhillip Court, Suite C
Concord, NC 28025
Phone: [phone]
Fax: [phone]
Greensboro Office:
3817-E Lawndale Drive
Greensboro, NC 27455
Phone: [phone]
Fax: [phone]
RIPRAP LINED PLUNGE POOL FOR CANTILEVER OUTLET (Version 8.99)
(Reference Design Note No. 6 (Second Edition), Jan. 23, 1986
JOB: -Tryon Village Townhomes
DESIGNER: K .,i Date: 6/27/2008
CHECKER: Date:
INPUT DATA:
Conduit Diameter D = 2.50 ft
Conduit Discharge: O = 48.40 cfs
Conduit Slope at Outlet: S = 0.01 ft/ft
Conduit Outlet Invert Elevation: El, CO = 428.00 ft
Tailwater Elevation: El, TW = 427.00 ft
Outlet Channel Invert Elevation: El, CH = 427.50 ft
Water Density: RHO = 1.00
Bed/Riprap Particle Density: (Default 2.64) RHOS = 2.64
D, 50 Riprap Size: RS = 1.00 ft
Riprap Thickness: (2.5*D, 50 recommended) RT = 3.00 ft
Bedding Thickness: (6 inch min. rec.) (Enter 0 for geotextile) BT = 0.00 ft
Side Slope Ratio: Zw = 2.00 ft/ft
Upstream End Slope Ratio: Zlu = 3.00 ft/ft
Downstream End Slope Ratio: Zld = 3.00 ft/ft
Combined End Slope Ratio: Z1 = 3.00 ft/ft
OUTPUT---POOL LOCATION AND DIMENSIONS:
Vert. Dist. from Tailwater to Conduit Invert: Zp = 1.00 ft
Submergence Check: (If Zp < 0 , Use Zp = 0) Use Zp = 1.00 ft
Beaching Check: [0/(gD^5)10.5 <= (1.0+25*D,50/D)] O.K.
**Beaching Controlled**
Distance from Conduit Exit to C/L Pool: Xm = 4.94 ft
Pool depth at C/L Below Conduit Invert: Zp+0.8Zm = 2.22 ft
Pool Bottom Elev: EI,PB = 425.78 ft
Pool Bottom Length: 2Lr2 = 1.09 ft
Pool Bottom Width: 2Wr2 = 0.99 ft
Upstream Pool Length at Tailwater Elev.: Lru = 4.20 ft
Downstream Pool Length at Tailwater Elev.: Lrd = 4.20 ft
Pool Width at Tailwater Elev.: 2Wr = 5.87 ft
Check Side Slope Ratio: (Wr>=We) O.K.
**Side Slope Ratio Zw O.K.**
Check Min. End Slope Ratio: (Lru & Lrd >= Le) O.K.
**End Slope Ratios O.K.**
Check Upstream Length: (Lru >= Xm) *PROBLEM*
**INCREASE END SLOPE RATIO, Zlu**
Pool Bottom Elev. at Bottom of Riprap: El, BR = 422.78 ft
Pool Bottom Elev. at Bottom of Bedding: El, BB = 422.78 ft
OUTPUT---VOLUMES BELOW WATER SURFACE ELEVATION:
Volume of Excavation (measured from bottom
surface of bedding): V,pbs = 30.4 cu yd
Volume of Rock Riprap: V,rs = 29.5 cu yd
Area of Geotextile: A,gt = 75.8 sq yd
Spreadsheet developed by D. Hurtz, Midwest NTC, 1/90
Spreadsheet modified by M_ Dreischmeier, Eau Claire TC, Wis., 3/98
Design Note No_ 6 (Second Edition), Jan. 23, 1986
"Riprap Lined Plunge Pool for Cantilever Outlet"
Natural Resources Conservation Service
Engineering Division
FORMULAS & COMPUTATIONS
g = acceleration of gravity 32.20
O/(g* d^5)^(1/2) = dimensionless parameter 0.86
Zd = water depth above channel invert -0.50
Vo = conduit discharge velocity 9.86
Vh = horiz. velocity component of jet impingement 9.86
Vv = vert. velocity component of jet impingement 12.04
TAN,a = jet impingement slope 1.22
Vp = jet velocity at impingement 15.56
Xp = horiz. distance from conduit exit to center of
jet at impingement with tailwater 3.64
Fd = densimetric Froude number 2.14
Zp/D 0.40
Zma = maximum pool depth when Zp/D<=1 1.52
Zmb = maximum pool depth when Zp/D > 1 1.27
Zm = pool depth to be used 1.52
1+25'RS/D = parameter used in beaching check 11.00
Xm = horiz. distance from conduit exit to center
of plunge pool 4.94
Le = min. horiz. distance from center of pool to
water surface contour at upstream or
downstream end of pool 2.72
We2 = one-half pool width at center at water
surface elevation 2.48
Lr2 = one-half pool length at bottom of pool 0.54
Wr2 = one-half pool width at bottom of pool 0.50
Lru = adjusted upstream horiz. length from center of
pool to water surface contour at upstream
end of pool 4.20
Lrd = adjusted downstream horiz. length from center
of pool to water surface contour at
downstream end of pool 4.20
Lr = adjusted horiz_ length from center of pool
to water surface contour at upstream or
downstream end of pool 4.20
Wr = adjusted horiz. width from center of pool
to water surface contour 2.93
A,2 = horiz. pool area at bottom of pool 1.08
A,1 = horiz. pool area at channel invert elev. 89.68
V,p = pool volume between bottom and outlet channel
invert elevation 2.13
A,2r = horiz. pool area at bottom of riprap elev. 4.97
A,1r = horiz. pool area at channel invert elevation
contour at bottom surface of riprap 646.44
V,pr = volume of pool measured from bottom surface of
riprap 41.25
A,2b = horiz. pool area at bottom of bedding elev. 4.97
A,1b = horiz. pool area at channel invert elevation
contour at bottom surface of bedding 646.44
V,pb = volume of pool measured from bottom surface of
bedding 41.25
2Lr2e = excavation length at bottom of riprap 2.06
2Wr2e = excavation width at bottom of riprap 2.41
Wre = adjusted horiz. width across pool
from bottom of riprap at water surface contour 19.28
Lrue = adjusted upstream horiz. length from center of

pool to bottom of riprap at water surface contour
at upstream end of pool 13.69
Lrde = adjusted downstream horiz. length from center
of pool to bottom of riprap at outlet channel
invert elevation at downstream end of pool 15.19
Lre = adjusted horiz. length from center of pool
to bottom of riprap at water surface contour at
upstream or downstream end of pool 13.69
A,2 = horiz. pool area at bottom of pool 1.08
A,1s = horiz. pool area at water surface elev 49.28
V,ps = pool volume between bottom and water
surface elevation 0.87
A,2r = horiz. pool area at bottom of riprap elev 4.97
A,1 rs = horiz_ pool area at water surface elevation
contour at bottom surface of riprap 527.84
V,prs = volume of pool measured from bottom surface of
riprap to water surface elevation 30.42
21-r2b = excavation length at bottom of bedding 2.06
2Wr2b = excavation width at bottom of bedding 2.41
Wrb = adjusted horiz. width from center of pool
to bottom of bedding at water surface contour 19.28
Lrub = adjusted upstream horiz. length from center of
pool to bottom of bedding at water surface contour
at upstream end of pool 13.69
Lrdb = adjusted downstream horiz. length from center
of pool to bottom of bedding at outlet channel
invert elevation at downstream end of pool 15.19
Lrb = adjusted horiz. length from center of pool
to bottom of bedding at water surface contour at
upstream or downstream end of pool 13.69
A,2b = horiz. pool area at bottom of bedding elev 4.97
A,1 bs = horiz. pool area at water surface elevation
contour at bottom surface of bedding 527.84
V,pbs = volume of pool measured from bottom surface of
bedding to water surface elevation 30.42
Areas for geotextile:
A,b = bottom 4.97
A,lr = left & right sides 277.66
A,us = u.s. end 144.68
A,ds = d.s. end 161.83
A,p = perimeter 93.31
A,gt =total area 75.83
RIPRAP LINED PLUNGE POOL FOR CANTILEVER OUTLET
Reference Design Note No. 6 (Second Edition), Jan. 23, 1986
Elev. 428.0 Elev.
427.5
Elev_
2-2 425.8
1.1
1 1
3.0 3.0
2.1
4.9
• 42 • 152
SECTION A-A
19.3
5.9
1.0 1
3.0 2.0
• 2.4-i SECTION B-B
B
A A
ROCK GRADATION
% Passing Size in B
100 24 Tryon Village Townhomes
60-85 18 LANDOWNER
25-50 12
5-20 6 DESIGNER: KLJ
0-5 2.4 SHEET OF
N Z
d
oQ
U
U
M.. ~
~ p
0.;p D V~b'
~ZM r ' ~ O
O ~',Z
w~~Z
Q?-~~
pfY~h
t~fl~~©
.INDEX OF SHEETS
EXISTING CONDITIONS 5W 1
STORM DRAINAGE PLAN SW 2
GRADING PLAN SW 3
WET DETENTION POND DETAILS SW ~ 1
~ ~ ! 1 1I ~ ~1~~~1111 ,LEVEL SPREADER AND DETAILS SW 5
} ~ Illli Illli~'. f ~ ~ 1 I h.
111 ~ ! l 1111
I11~1~III ~I'~~I~
i(jC% r ~ , ~11i1l~i ;a I I I I I`` Ii .11 y
y~` ~ l I i , 1 111 } l I I ~~I
I - _ - - ~ r _ / l r - ~1~5 ti
-MACEI7ol~t}~~iA1CE7JR. 1 _ 1 Ill l 1 1 ~ ,11114
t it - - ~ ~ . ~ ~ 1'., + I ~ i ~ ~ ~ / ~ ~ f ~ I a r, I;~'1 14 I 111
~11! ~ I~~' ~I ~ ,
~ L__~. ~ I r~ I ;r ~ r i t 1 I I ~ 11 11 Il !ll' ~ 1~,,
` ~ 1 iii 1~1 ' ; ~~11 11 ~ll Ill~~
~ O - ~R . - r 1 ~ i ,1 ;
`.r I 1 ~ . - ~ ~ i
X11 I(~ 11 1111
h ' i l1 , , 1111 ~~1~~;
i 1 1 ~ ~I ~ 1 11 If ll !11'
` L ~ t \ 1 P"1 1 ;
; ; ; 'll', ~I 1~~~ 1~
i [ j ~ / 1 f , . 1 t 1 < < ~~lCl li ll 111
4 `
, 111 j~l~~'°~~ ti
1 \ / { / ` 1 it II l! ¢ c lily ; ,Ill ~~„~lli
~ 111 w,~
o ; ; ,1111 Il ll Ill-
~F _ ` \ ~ 1 l 1 i+^ i 1 ~ i. " , 1, ~ 11~
' 1I1 1l ~ 111
, ; ;I1; ll~l~ ; , ~ 1 ill 1 1~~
) ~
; ; 't , J ,l 11 Ill
1 7 ~ l./ / I ~ \\1 ~ Tom; • / ~ t..r i i : _ 1 1 1 II I
-Ij i ` `nIII`FFF ` ~ ~ ~ \ \ ~ rL ( \ 1 4'y _ _ I " ' 1, N 1,` II 11 Ql~
; ; ~~,1 11
; 1
l 11 II ql ;
1 II ~ ~ / ,111 ~l ` ` ;1; ~ 111
+1 ~ 1i 1 1
1, i 11,~,,`, 1
; ; 1 111 ~ ll 111
~~~~~--_1_ 1111~'i ~i 111
~ 1 ~ 11
>
» SCALE: 1 = 100 1 U
-o SCAL .
aaa0aaoaooa°°o°a0
a~°° ~N ~A °°~o
~ a° ~oaa° FESS~p ~'q ORIGINAL SUBMITTAL:
7 O ° ~ ° P .JUNE 13, 2008
o SE L `8 0 p a p y P 0 ~ a O REVISIONS:
JUNE 20, 200$
0 ,V °0p°aa°°o G\ OV JUNE 27, 2008
°°°aFT N . ~E7oa° N °a L 6
~ °p0pooooaaoao .
f rn
9 ~k b - la8o
s U
• S • DEVE,OPE~
Y a
c
g PU LTE HOME ~OR.PORATION
a s
18 801 CORPORATE CENTER DRIVE SUITE 1 801 CORPORATE CENTER DRIVE, SUITE 118
E s RALEIGH NC 27607
I PLANNERS I SURVEYORS ENGINEERS ' 0 R 5 RALEIGH, NC 27607
~ TELEPHONE: [phone] _ www.withersravenel.com TELEPHONE: [phone]
~ 111 MacKenan Drive Ca ,North Carolina 27511 tel: [phone] fax: [phone] www.withE ry FAX: (919} 816^1198
816-1.198 FAX, 919
0 ATTN: RANDY KING
_ ATI'N: RANDY KING
[kD~ L4 (qj~ L~ H VV
5 c mm~mipm~nmem ~r~nn~me~m~ ~n~~a I
r JUN 3 0 2008
° DENR•WATER QUAUTY WETLANDS AND STORMWATER BRANCH
b
m
i Y

. - d..~-,

/ \~y,
` 1 i ,
' / ~X• ~ f tat / 'i t ii
~ ~ j I. l / r l ~ ~ A i 1 ~
j ,C' I 1 I 'j 1, 1 1
f ~ l r ~ 1 ! I ~ ~ ~ / ~ ~ ~
. ~ ~h
' , . • ~ z ? MIDLAND TRYON ttC 1 ~
..G PIN # 0772-67-6945 _ _ _ _ _ _ ..-.....,r-'/ " / ' i i _ ' ~ i ? ,'DB 11416 PG' 191$ 1 I, \ I ~ f I NIF
I 1 l{ , 1 [ MIDLAND TRYON EAST, LLC
r ~ ' i ry ' l' ~ 1 ~ EX SPUTTER BOX ' ,r SS .r.~ / . / ,p J t ~ ( 24",~ DISCHARGE , ~ i ~ ~ i 'ti PIN # 0772-77-0966 ~I .
h _ i ' 1 ~ I /15 DISCHARGE' ~ ' (r-' o, _ wEI1AtID5' i( fir" ~ ~ p.l r~^''f~ , r DB 12497 PG 978 ~ II , yl
p it ~ i ~ } ' 'LI w . ~ r 1
~ \ O / r , / I i i , ~ I : ~ ` ' m ; , ' . ; ` ~ SD ACCESS EASEMENT / ~ r of ~ ' .s EASEMENr I 1 ~ 1 ~ ~1 I ~ 6! 4 ; [
r, • , ; M , DB 3494 PG 18, r r r • r' 1 , ~ ~ ; r 1 SUPERSEDED EASEMENT PG 1$, ED EASEMENT ~r ~ ~ j
~ 1 ,:r ~ jj { ~ ~-r I IN DB 3390 PG72t + 10 PG72 t , ~ I
• 1rfl 7 .,el ~ O J t / 1011'x. ~ N ' 1, 1 \ ~ 1 I i 1- ~ o ~ ~ I BOUNDARY LINE TABLE
A A~ ITION CO. ~ - I t 'iii , / - ~ , ~ TRYO VILL GE QUiS ~ - , ~ ~ ~ LINE LENGTH BEARING
I i \ C/0 J MORGAN IN MGMNT• ~ ~ ' ' ° ~ ~ / ~ ~ ~ , BL1 2.OD' S83'41'S8"W \ / ~ ~ ~
IN # 0772-58-7069 - - o ~ ~f I- , ; ~ I~;I ,Iii 1, BL2 7.69' S06'1fi'3i"E
B 12957 PG 116 o ? ~ ` ' ~ _ } :-i / i -a ~ ` ~ 669 ~ i 11I ,
L7
~ i,~ ~ S,i BOUNDARY CURVE TABLE ~ . ,
~ ' tl I - ~ " l 1` ~ CURVE RADIUS LENGTH CHORD LENGTH CHORD BEARING DELTA TANGENT ~ ~ ~1 ~ t
~ - ; , i i ; i ~ , r , 'Z , .a ' /r' r: / r• r / ~ , r l ~ ~ ' / , S i / \ 304.6y r' rn'.~ _ ' ~ H~'--'""""+ [,I i,~ 8C1 1gq.37' 57.84' 57.04` N26'49`27"W 3 'g1'07" 29.75' ' ) ~ ~ 1 1 ~ 1 11 r / N 1
r" i ~,r r / l / ~ l / j r' i ~ ~ l , lI / ~ I I / i.-L, /i"`\I _ r 1 I ~ ~ +i BC2 1519.00 345.39 345.38 Nq5 28 32 W 143 q5 172.71 r'~ ~I`~; BC3 37'50.40' 39.62' 39.62' N05°54'50"W O'36't9" 19.$1'
J / r ~ "''i / / % l l ! / r r ~ 1' r / ~ / \8~ `e~ / 1 I / p ~--A i
AV 'A ~ ; r. / _ i ~ rn i i ~ i ~ / ~ i i I J t r l yr ; ~ i/ i~ ? ~ 1 1 1 I :n o I a ~ ~ , 61 Iy' 1 ~ ;1~~~
" -,j. ' ~ 1 I11 DEVELOPER: OWNER: I~ ! ~ t,~', • PULTE HOME CORPORATION PULTE HOME CORPORATION
/ ,p / o / i ; i I BLDG ~ ~ 1 / , 1'I ~ 8171 CORPORATE CENTER DRNE 8O1 CORPORATE CENTER DRIVE
I ~ I 1 r}- ~ t,, SUITE 118 SUITE 118
/ 1 j + I " ~ I,~!1 RALEIGH, NORTH CAROLINA, 27607 RALEIGH, ,NORTH CAROLINA, 27607
/ ~ , r' r, /r i' f ~ / / r % l / ~ ~ 1 ;'1/ ' n I! ri / l ' A ( I i i I I ~ Il ~ J ' ! I ~ ~ ~ ~ TEL. (919j 816-11 OO FAX. (919j 816-1196 TEL. [phone] i OO FAX. (919j $1 fi-119fi
/ it ~ ii a / , ~ 1 , / / / r ~ \ -Jij/ ; / / ! {N / \\J / ~ ^ (I' ~ 1~--- y~tl~y~t ATTN: RANDY KING ATTN: RANDY KING
i 1/ l / , i l J , , \ / / l;\; ~ ~ r ! / / i~ , ~ I 'tIom r \ ,
? ~ t .j l ~`c ~ ~ ' ; ~ TAT A T• ~ ICI' ~ , ` ~4~ > > CON C /CONSULT N .
~~`-!,i ~ "L-,~' ~ j ~ I y l,~ WITHERS & RAVENEL, INC. TOWN OF CARY
~ / . ,r\ ,/r ,r- "1 r ; 0 I / i ~ , 1 ~ ~ o Tom.--- ~~RMAN NT OPE EASEI19EN~` : ' •o-` i~) 1 ~ 1~ j ~ 1 111 MACKENAN DRIVE ~I ~ PROJECT q6-SP-018-A LOPE EASEMEN i 1 ~ 1'i CARY, NORTH CAROLINA, 27511 #
i ~ i i / ~ 1 I \ N DB~9004 PG 258 ,9004 PG 2561 J ~ ~ t~
} ,1 1 / t ~ / ~ ' ~r~ \i ~ i / r, r_ ~ % , Iy- ` j i f ~ ~ / 1, 1, ~ i~ ~ 4 ~ ' ~ i % , ~ TEL. [phone] FAX. [phone]gg8 . ~ ~ -~i ,
~ ~ ~ ,..r , i r ATTN: KENNETH L. JESNECK, PE / ' ~ , c. ~ ,
:t{~ 1 ~ ~ ~ .III I'
~ ~ V~,r- /lei l,i, ,~--,'f ~ 1/ r,+ .~i. ~ ~ ~ ~ ~ I I 1_ _ _ - i' ~ ~I1J ~ ~ ~ i t,, ` WAKE COUNTY PIN NUMBER: 0772674511 REID ID#; 0331370
RI RAI?' 'ti r i' i r20' N CA "F,' ~ ~ r ~ - t ~ \ ~ l i C, l~ ~ ~ ~ ~ `
IN STREA ANNEL ~ ` f IT ~ r`l ( ~ ~ ~ / \ ~
• 1/r ( „EASEMENT ' \r ~ ` \ - \ r 'i ' r 1. r' r / ~ 2007 P 192 ~19$r-~'/ ~ ~ ~ .i ~ ` / - ,f m- ~ ~ ; ~ as t ,
i,i .li ~C 1 r i1J l 1 I' ~ i\~,^I,^/ J / J ,I ' i, ' i 1 ` ` r , / f
f , f f ~I 11 1 = " l~ ~-•j EXISTING CONDITIONS NOTES:
, , ;y, ; . ~ I i ` / ~ T WI~`4ct COU.NTRY-DfVE~:QPERS i\\ r ' f i ',,r- d ~ 11 ~1 I ~ I ~ 1. EXISTING CONDITIONS PLANS PROVIDED BY JOHN R. MCADAMS.
= r , , ~ . ~ n + 1 ~ ~T\WILMINTON / ' ' (f i t~ ~ 1 1, , S 1 `i'ii , 1 l , / \ f \ \ I ( 4 ` ' .-r ,
" • l l , 1 1 '1. / 1 1 i .u o"', P # 0772-67-451'~~ ~ \ o \ / J rOr t ~ ! P, t ' \~~.~s i + 1 ~ P ~ 1 0 ` 1 `.,4\` 1~ P ~ of \~"ih 1 ~ _ % `j~`- i J- / ~ ~ , ~ xJ ~ ~ Z. BEARINGS ARE BASED ON NC GRID NAp $3.
/"r•- ; ~ ~ r i, li p ~ i ~ I , ~ \ N v 599 G 2~'8 \ .I-- { ~ ' 1 ! ~ D A ~ 3. BOUNDARY INFORMATION SHOWN TAKEN FROM RECORDED PLAT BY JOHN R. i i ~ r I MCADAMS RECORDED IN BM 2005 PG 1213.
~ ~'~~-~-.1,',~ I ~ r" C ~~`4 ! 4. PROJECT IS LOCATEp IN ZONE X AS SHOWN ON f1R ~371$3C0506E AND
..+w::. ` j' ~ f ~ i.1 ' I + { , ` / \ ~ ~ ~ \ \ / \ ~ ~ ~ ~ .i /mar. i 1 " 1' / ~ ~ / ~ ,d / 1 1`71... _ ~ ~ n I -i' ,,,,1 #37183C0510E EFFECTNE MAY 2, 2006. ''r I~,I { 5. RI HT F AY F R r T F : ~ G 0 W 0 WALNU S R£ET ROM MAP ENTITLED
. ~ ~ r_ r / ~ ~ 1 y ` , i' ~ \ - , - -PERMANENr~DRAINAGE•' EMEN ~ ~ n ! ! , 1• ~ / - ~ ,a5a'~ -`DB 9 s''PG 32 ,;E•' EM£NT ; ~ ~ U7 ~ "RIGHT-OF-WAY EASEMENT ACQUISITION MAP OF WALNUT 5TR£ET 92~9'PG 32-~~ r ~ ' CJ --1 ~ ~ ~ •
r \ '•r ~ f t . •1 ~ L . 1 . r o -0 1 IP ~ J ; I ; ' ; ; ~ % , ~ 4 ~ ~ ~ M ROVEMENTS, PHASE 2 BY THE ROSE GROUP INC. DATED AUGUST 31, o , 1 Z m 2000.
, 'y ; ( I, I~ J Trl f 6. TH15 SURVEY WAS PERFORMED AND MAP PREPARED WITHOUT THE BENEFIT OF
? f / f t ~ , 1 \ ` ~ ~ i i ~ is ~ - ~ ~ ~ 'I ~ A -'I A TITLE REPORT. TH1S SURVEY 1S SUBJECr TO ANY FACTS AND EASEMENTS s ~\~l, ; { ~ ;r , WHiCH MAY BE DISCLOSED 8Y A FULL AND ACCURATE TITLE SEARCH,
' ; i . " ~ ~ 7. UTILITIES SHOWN HAS BEEN LOCATED FROM FIELD SURVEY BY JOHN R.
J 1 I' ~ ~ 1 ~ MCADAMS AND EXISTING DRAWINGS. THIS IS NO GUARANTEE THAT THE , . ~ : , ~ ~ r,~ _ ~ ~ ~ ~ UNDERGROUND UTILITIES SHOWN ON THE MAP COMPRISE ALL THE UTILITIES
~ 'p -y \ / ~ ' ; ~ ~ ~ ~ WITHIN. ANO ADJACENT TO THIS PROPERTY EITHER IN SERVICE OR :ter ; 9-~ o.
` ~ I, ! , ABANDONED. THE SURVEYOR DOES NOT WARRANT THAT. THE UNDERGROUND ~ t` ~ ~ p UTILITIES SHOWN ARE IN THE EXACT LOCATION INDICATED ALTHOUGH HE DOES
T 0.' 1 i ~ 1 t 1`j , ~1` ~Sb _1 - -y row ! - , J 1 I ~ , `f ` ~ ' / ! ~ .z'~~~ I`y ~ ~ ' CERTIFY THAT THEY ARE LOCATEp ACCURATELY A5 POSSIBLE FROM
I ; ~ ) i , ,i 1, I` ~~y INFORMATION AVAILABLE. THE SURVEYOR HAS NOT PHYSICALLY LOCATED THE r ~ 1 7 1' 1 ~ ~ UNDERGROUND UTILITIES.
N 1 * r i r :L„ I /I ~ ti ( -1-- - m~' , \ 1 J . ~ 1 1 ~ ~ . 1 i J` , F
tn'' , ~ ` f I !
~ + ~ I ~ ~N~ I NIF
I I ~ o I I HAROLD J. THARRINGTON I y
yy~~ Q ~y if I I 1 ~~--``T~~~~ ~ i~ ` + P[N # 0772-77-1515
~`z,- \ ~ ~ ~ ~ o % r1-~ ~T ` ~ ' 1. / - ~ ~ - - PERMAN NT 5L0 PERMANENT RSLQPE,~AS~E~ti~ ~oj•~ ~ ` l ~ DB 3493 PG 32
I ; ~ ~~OB.9R513~P~ t~~i' ~ ~ , ~ ' } l I I ~I ~ F t°, ~
- ' S ~ , Y , ~ ~ \ + , \ I •Q • / / _ i • ` O \ U vl ~ \ ; W ~ n ~ T ~ ~ ~ l { 1 ) i Ifs ' ~ i
N ~ 1 ~ + \ \ S
\IN STREAM CHANNEL ly J°' . ~ ` ~ 4 / ~ ` ~ F \ / ' \ o / ~ ~ / / ~ ' l w ~ i. • ~A ~l ' ~ 4d5 ? , ~ / 0 1 1 r o \ / • ~ v , t ' 1 I l a 1 111 l i .I , ~ r, ` ~
x _ . ' r : WETL+~NDS f• ~ ~ -'F, / \ ! i/\ 1 ! ~ : F f 1 s. j i r ' o ~ ~,o\ I ~ , t
I ` r R~ z~\ ~ 1 ~ ~ o 1 N ,
a,~ ~
3 ~ . • o \V'`` 1 qi i 1I ~ ( / / \ / ! .I ~ ,~1~ \ ~ - N I I \ I ~ \ 'I j . V~ ~ / , 1
/ I h ~
$ " ~ ^ ~ - ~ . . ;,r 35 y. i ~ i f~ -.mot ~ \ ` ~ - - - 30 TAN Of CARP GREENWAY EASEMENr ~ ' i ` ` N. ' , l
1 , / = MB 2006 PG 2458 _ . 1 ~ ~ i ^ \ ~ ! ~ ~ ' ~ ?"`PER ANE STRUCTIO~ STRUCTION EAS ENT :~R I ~ ! .4 ~ 1 / 1 B 925$ PG 38 ~ `t ~I, , °°°g°°°aa°aoaaaaa
t . \ ~ ~ l ~ CAS
~ ~ 1y l 1 \~r ~ + ~ f ~ ` ~ ` c °°e°oo °o°D as
t `p ,.t ,..r-t~,- I ~ !I # ! I ~ ~ QRpFESSIpNgI 9 e 1 0 ~ ~ r- I~` ; u ° o o
~ / ~M j nj I SEA o ~ ~ I a' ' ` ' j4 II I o 0 1$49 4
b ~ ! _ _ ~ _ -S 16TH _ ~ \ o' _1. I , _ i a o` o
40 rOWN OF CARY ~ - ~ - _ `WETLANDS ~ ~ ' ~ - SANITARY SEWER ~ d ° C$FISERVA`fION• AREA EASEME ~ _ ~ ~ .
o EASE EN , MB 2006 PG 34'59.. a.,~ ~ l ~ i ` 1 ` ~ \J ~ ~ a ~~`~°9O°0°09 ~G` O
MB 2006 PG 2457 . ' ,
o , ~ ~
' ~ i t ~7`E~~i ~ 111 i l' ~ i _ ,
OFD ERtI E ~ll£flT I I ~ ~ I ~ ~ ~ . ~ ~ GRAPHIC SCALE
MIDLAND TRYON LLC \ , . ~ ~ \ =-~8. MB- - G .24~5~$ ~ ~ ~ , ~ ` i ~ ~ so o ss so Too
o PIN # 7 66-0935 ~ ~ ~ , _ _ _ EASEMENT 1' ~ I ~ ~ ~ i ~ i I I sn
DB 11416 PG 1918 ~ ~ ~ PERI~ANENr- DRAINA~ EASEMENT - ~o ~ \ ~ DB 895 - -G. 937 37 i ~ ~ ~ t inch = 50 ft.
4
t- ~ - ill n- ON It .1 I it 11 11 1 It
g-
M N0. Revision Date Q Designer Scale
1 PER TOC REVIEW COMMENTS 04/10/08 KW KU 1" = 50' 0 ~Sheet No.
2 PER TOC REVIEW COMMENTS 05/08/08 KW Drawn By Date MI TRYON VILLAGE TOWNHOMES,
EXISTING 3 PER TOC REVIEW COMMENTS 06/12/08 KW RSM 03/13/08 ING CONDITIONS WITHERS RAVENEL ENGINEERS I PLANNERS I SURVEYORS S a V
o Checked By Job No. 111 MacKenan Drive Cary, North Carolina 27511 tel. [phone] fax: [phone] www.withersravenel.com
o K 02080134.00 CARY WAKE COUNTY North Carolina
Y

~.,~~s I ~ ~ NOTES: _ I i i i
7m.mI rm..n r / l ~ ~ p _ _ _ \ y I? ~ r r f'r' ~ r r , w - ~ ~ ~ ~ r rAr - ' ~L.1 \ i •-'~I ~ 1. ALL CONSTRUCTION SHALL BE IN ACCORDANCE WITH THE TOWN OF CARP STANDARDS, SPECIFICATIONS AND'DETAILS, LATEST
l r ~,l J 1, , , ~ I s
t " ~ I I { ~ 2. ALL MANHOLES LOCATED OUTSIDE OF PAVED AREAS SHALL HAVE A RIM ELEVATION ONE FOOT ABOVE FINiSHED GRADE. ` I' ~ I ~ I , j ~ { j 3. CONTRACTOR SHALL MAINTAIN ALL EROSION CONTROL STRUCTURES DURING THE LIFE OF THE PROJECT,
j / r RECD , _R .'P tT-c~•- .L...r l if c` i I 1 ; I j i~ } j { 4, CONTRACTOR SHALL CONSTRUCT DIVERSION DITCHES AS NECESSARY TO ENSURE ALL SEDIMENT IS DIRECTED INTO EROSION
/ / r' ~ r l ~ ` - % RI S ATOR PAD' ~ J' , f ' 'i t ' i y t. { j ` {j 1 CONTROL MEASURES.
{ / ~~~/p''i aF I , r i ~ ~ 1 i 't II ~ jj { ~ ~ ~i ~ 5. ALL CATCH BASINS SHALL BE PROTECTED PER TOC STD. 4,14 UNLESS NOTED OTHERW15E. : 6. CONTRACTOR SHALL VERIFY LOCATION OF ALL EXISTING UTILITIES PRIOR TO CONSTRUCTION. LOCATION OF EXISTING UTILITIES
- .r ~ i ' ~ ~ { ~ ~ I 1 r' ' 1 rrCS rr"' j / •y ! / 1 -'1,.~ 1' I t I I i'"~ j I I 1 1
,mil ,r .r' ,l. r 1 + t r 11 i l r;,ry ~g/ fry. ~ ~:1 1. „y,; ~ l 1 r r f ^ / ' * / ..a r •J . 1 RCP/I A'48.00 ^^~~"_!l _ F = c. , ; 1 I + ~ ~ ~ { j ~,}j'~. j I ~ } ~ ~ j% ; . ~ ~ ~ ~ 7. TAP RAPHIC AIN O.RMATION~FitOM SURVEY BY~WITHER5~ANDI REVENELCA~~ E CONSIDERED QNLY AS AQPROXIMATE i ~ II 11'j I I j 1 j j j l ' 8. CONTRACTOR SHALL' CLEdR FOR PIPE AND CONSTRUCT` PIPE: "CONTRACTOR SHALL INSTALL SILT FENCE AND SEDEMENT BA51NS
,r r'' 1 ~4" RCS? ,INV;'4 - ,~ELOGATEI E SPLITTER BOX r , ' t AT PIPE ENDS AND DIVERSION DITCHES AND THEN BEGIN GRADING ROADWAYS.
-.rf / r l V ~ ,r ! ~ r , - t + 5TAtL i5 RCP, INV OUT 451.00 I ~ f ~j j f j }j { ?j~ t 9. IF STORM CR05S DRAINAGE CAN NOT BE INSTALLED PRIOR TO GRADING, TOC STD. 4.11 SHALL BE USED TO CROSS WET 11 1 j1) I ~ { { `j; - `•t WEATHER CHANNELS.
I ~ 7 r~r / / ,;'•r• ~ 1, ~ I~ 1 STALL 24 RCP' INV OUT 451'.00 I ~ _ I~ ~ ' ...y.,.,. -..mom...:, ~w ` r'' , rl / .i .~t ~ ! r i / i ' i I 1 1 1a r Ir ~ ~"1111j { j I I ~~j ~ ~ ~ ~'t + 10. CONTRACTOR SHALL ENSURE GRADING OPERATION IS CONDUCTED IN A MANNER THAT DOES NOT ALLOW ANY SEDIMENT INTO
j ij1{ I jj i { Itlj j j 4! { ir? ~t CREEKS. 11 ~ 1 11. STORM WATER D35CHARGES INTO AN UNNAMMED TRIBUTARY OF SWIFT CREEK,
I ~ 1 is , .l:.f I r' r 1 i l ! ; I it ! 1 1 t,'~ f ',i j j ~ { j 9 j j Ij { c 'i 12. ALL STORM DRAINAGE PIPE SHALL BE PROTECTED DURING CONSTRUCTION IN ACCORDANCE WITH TOC STD. DETAIL 4.12.
I ~ ~ ' 1 r r E'~ 2r. + ~ / ~ ~ 1 ; 1 i 1 , r r r rI c~. 4 I ! ! ~ + ' t 1~1 j ~j I I j j j j II I II t 13. CONTRACTOR SHALL PROVEDE RIP RAP LINED TAIL .DITCHES AT THE STORM DRAINAGE PIPE DISCHARGE POINTS AS REQUIRED TO I yIl I j { I j j ! j~~ l {,ill ENSURE POSITIVE DRAINAGE.
i I r- / /r ' / / J ~li rr~'+ ~I i r ~ ae,.J'o. / l ~ f ~ ~ 1 I ~ 1 i 14. SEDIMENT BASINS SHALL BE KEPT OUT OF WETLAND AREAS.
~ { j { ',,j, t jj ~ ~ I I ; ' 15. THIS SiTE 1S t~T WITHIN A fEMA MAPPED 100 YEAR FLOOD PLAIN. REFERENCE: FIRM MAP 371$3CO2$0 E, DATED MAY 6,
[ ~ ~ ! !1 ' ! ..~~~ar, ~ ~ S' is 1 - " i I j{ 1 r ~ I jj\~ { I 2006. { j ~j } { 'j\ j } ~ jj I (1 16. A PRECONSTRUCT[ON MEETING MAY BE REQUIRED FOR THIS CONSTRUCTION.
II + ' 17, PERMANENT GROUND COVER SHALL BE ESTABLISHED EITHER IN 15 WORKING DAYS OR 90 CALENDAR DAYS, WHICHEVER IS
1 ~ 1 ~ / ~ ~ l ~ jj I ~ j -1 j r . - r' ..1',.. ~ ¢ ij I ~j I { } j j ~j { {i i SHORTER, PER TOWN OF CARP REQUIREMENTS AFTER CONSTRUCTION IS COMPLETE. ~ ~1 j} I _ I ~ ' t8, TOPSOIL SHALL BE WASTED OFF5ITE OR IN FILL AREAS AS SHOWN.
' 1 ' '1 / f r I'w' SU.VV I f ? r/- ,ii/ , jr~ ~ I . ~ ti ~ \ { ; ~~t'?k -_^_`--F'_J -1...,:a.,. I j , r'~ ' _ 1 ~ 1 i ~ I ; i 1 I I • I \ ' III Vy + v*r s 'rte i ,^..,~I .y , I ~ l 'n I i It , ~ + rc~s E: ..3 !y' t tw. f ~ ~ C~= ~ 1 ------rJ '~"''`C"" " • ~ { {j''~ 19, TREE PROTECTION FENCING SHALL BE INSTALLED AND INSPECTED PRIOR TO ISSUANCE OF A GRADING PERMIT, FENCING SHALL
__~~'i +7•-..IJj, I ~ A~~~} ~ ~A NOT BE REQUIRED ADJACENT TO AREA5 WITHOUT WOODED VEGETATIQN. g jt ~ L j r'. li I 20. ALL CATCH BASIN HOODS SHALL BE STAMPED "DRAINS TO RIVER" IN ACCORDANCE WITH TQWN OF CARP STANDARDS.
1 1 ~ / ~ k:' rr 1 ''i r 1 , i ~ _ ~ 1~ l /J `r~ f 1 , I',, ~ '~j p { +'i'1 21, ALL CUT AND FILL SLOPES 5HALL 8E STABILIZED WITHIN 15 DAYS OF THE COMPLETION OF ANY PHASE Of GRADING OR 90
\ - f I 1 ~ / f,-' _ • 1~ r y t ~_i. 465 w a , I -+'~'1.~ . jj,,j I !~1y CALENDAR DAYS, WHICHEVER IS SHORTER, ANY INACTIVE DENUDED AREA5 5HALL BE STABELIZED WITHIN 30 DAYS.
1 1 ~ ~ _ • it ~ ' ~ r,, ~ ~ ; ; F+;,~ I'j ~j.--~-~•, jj ji { }Ill 22. ALL STREETS ADJACENT TO THE PROJECT SHALL BE KEPT CLEAN AT ALL TIMES OR A WASH STATION WILL BE REQUIRED. , tab ~ ~ I {i, ;l,,, 23. THE PROJECT MEETS ALL REQUIREMENTS RELATIVE TO BEST MANAGEMENT PRACTICES AND ENGINEERED STORM WATER CONTROL
I \ r ~ ~ ,~G , 4, qtr ~ ~ - 12* .1:_______ , y ~ j~ ; I', STRUCTURES A5 OUTLINED EN THE TOWN OF CARP UNIFIED DEVELOPMENT ORDINANCE CHAPTER 10, PART 3.
}j ~ ~ I'll1'~~ 24, RISER STRUCTURES MUST BE ON SITE BEFORE GRADING PERMIT IS ISSUED. ' ~ - } j} j~~r i t,p+'~ 2S. THE BUILDING RESTRICTION FLOOD LINE (2' ABOVE THE 100 YR FLOOD LINE}5HALL BE STAKED IN THE FIELD ONCE ROUGH
; r~~; ~1't~114I GRADING HAS BEEN PERFORMED AND BEFORE THE FIRST BUILDING PAp IS STAKED. ~ 1, t { ,~r 4l I ~
f t r+' = r.~ ~/1 i•i y r I, r ~ r• /J r fir'.. W! 1 VyJ ? ~s ,i / OPEN..-----li , ~ t~~ r , ~~p` r' r` 1,1 1 I { ~ ,~I' +
I i ~ y'' S 'jj e~ M^` Ili+} i`
.63 1 j j- pt ~l i I ~ I' }j STORM DRAINAGE PIPE TABLE •FES 1
~ I I , { ~j ~ Upstream Davmsiream Pipe I.eatglh Slope Upstream Dovmsiream MaledN upstream Irdei Upstmam Inlet Upstream Inld Upstream Nlet upstream Calculated System Tatal System Maximum A~e2ge
\ f f .r.' ^t ~ 6TH: 1 1 62 tl ~ ~ ` 'jj-- Structure Swclure ~ameter (ft) (°h) Imed (R) Inert {ft) Arm acres} Rational Ce~Sciem Raiion~ Flow (cfs) Rational CA (acres) System CA (acres) Intensity fNhr) Flow (cfs) apaoiiy (cis} Veixity {rt1s) III ~ ~ 4! CB 41 CB 40 15 inch 66.76 0.54 446.50 448.14 RCP D.aD 0,83 2.42 0.33 0.33 7,22 2.42 5.10 3,88
I I ~ t CB 40 CB 39 18 Inch 1a9.5D 0.52 4A6.04 445.27 RCP 0,50. 0.70 2.75 0.38 0.68 7.22 6,40 8,11 4.79
\ I I / r v r; Jf ~+1 ' }vD// ~ r~ , I ~~jj 1 l ~ l L__- ~Q+ ~ ~ / ~ I !j CB 39 CB 34 18 inch 72.30 0.91 445.17 444.51 RCP 0.23 0.69 1.15 0.16 1.13 7.22 8.21 10.&1 6.34 I ~9 DI38 DI 37 24inch 3265 1.25 451.50 451.10 RCP 0.60 0:65 2.84 0.39 0.39 7.22 21.87 27.18 9.05
I { dj Wi4 y DI 37 CB 36 24inch 58.99 1.70 457.00 4SD.00 RCP 0,07 0.74 0.38 0.05 0.44 7.22 22.25 31:68 10.36 ' 1 ! I 99 CB 36 CB 34 24inch 68.55 219 449.50 448,00 RCP O,aS 0.79 2.59 0.36 0.80 7.22 24.83 35,E 11.66
~ ? / _ 1 ? ' f r . , ' ~¢!TOiyN!.D~ ;CAR' :`J i I I ~ i` ~f \ / / , ~ SANIT~RI~',~EWER'" ~ 'r ~ ' ~i I ' r"-- I j CB 35 CB 34 15 inch 108.47 4.97 457.80 452.41 RCP O.Z9 0.82 1.73 0.24 0.24 7,22 1.73 15.49 7.92
\ \ ti / ~ / r i / J l i~~~ ~ ~ I+ " ~ l i I r . ,~7 / I ~ I i 1_ _ .{1~'~ ~ ~ CB 34 CB 31 301nch 93.21 1.23 443.41 44226 RCP 0.14 0.82 ' 0.84 0.11 2.28 7.22 35,51 4961 10.27 1 ~ ~ ij} - ~ ~ DI 33 CB 32 15 inch 14.66 1.16 444.25 444.Q8 RCP 0.04 O.6S 0,19 0.03 0.03 7.22 0.19 7.48 2.48
~s' t? ~ r ,',;:PEDE RIAN~T ~ , :r '~RIV t_. 1( ~ ~j \`~~#j CB 32 CB 31 15 ineh 45.71 1.03 d43.98 443,51 RCP D,O7 D.71 0.36 0.05 D.08 7.22 0,55 LD5 3.24 I ii s CB 31 CB 29 30 inch 89.09 264 442.16 439.81 RCP 0.14 0.87 0,83 0.11 2.47 7.22 36.99 71.65 13.93
~ ,f ~ t ~ }1 ' DI45 6144 1Sinch 122.00 3.93 460.55 455,75 RCP 0.14 0.53 0.54 0.07 0.07 7,72 0.5R 23,78 5.17.
? r.. O f r !l •/;4'"" f`• ! I' P i i 1 ~UI ~ 1 _ 1 t { 1~ ~4 DI44 DI43 t5 inch 97.74 9.98 452.5D 44275 RCP 0.23 D.55 0,92 0.13 0.20 7.22 1,46 21.95 9.64 l l 1 Dt 43 DI3g 15 inch 45.59 241 442.55 441.45 RCP 0,28 D.60 1.14 ,0.15 0.36 7.~ 2.60 10.79 6.86
. ~i aj ~ If Di 30 CB 29 15 inch 30.71 O.Si 441.35 441.1D RCP 0,04 D.64 0,19 0.03 0.38 7.22 2.78 6.27 4.69 CB 29 CB 28 3D Inch 50.98 1.39 a39,71 439,00 RCP 0,10 a,84 0.61 0.08 2,93 7.22 40.30 52.07 11:04
- ' r ! ' ~j ` jj CB 28 CB 24 3s inch tia.Ta 1.31 a38,59 437,14 RCP 0,14 D.91 0.93 OA3 3.06 7.22 41.31 82,08 11,01
j z^ ! r,/ I ri / , Ire , ! , I ,al 2 - I _ i-. / r , _ F , j ij Df 42 DI 27 15 inch A0.48 0.62 440.25 440.00 RCP 0.37 0.47 1.06 0.15 0.15 7.22 1.06 5.46 3.27 - ` t DE 27 CB 26 t5 inch 37.96 0.53 439.90 439.70 RCP 0.06 0.70 0.31 0.04 0.19 7.22 1,37 5.D4 3,31
?o , ,/f r rr~ ! / ~q(..' r' r; i:. ; j .i 1 I~J t+ `t 1 - 1 2' ' - -ti . ~ {,1}-~ C826 CB 24 151nch 27.67 0.72 439,60 439.40 RGP O.t5 0.83 0.91 O.i2 0.31 7.22 2.27 5.91 4.26 ~I a ~.I j CB 24 CB9 36in h 9.0'1 1.02 437.04 435.72 RCP 0.10 0.88 0.64 0,09 3.55 T.22 a435B 72.5 420
r '~3~w+~~' i r , •1 t PACE 1 .1 y ~ { j V j 0123 CB 21 18 inch 27.67 1.39 453.75 453.42 RCP 1.41 0.70 7.18 0.99 0.99 7.22 7.18 12.34 6.85 t. ! ~ ''a ~ ~ GB 22 GB 21 76 inch 38.38 0.63 454.01 453.77 RCP 0.72 0.83 0.72 0.10 0.1D 7,22 0.72 5.50 2.95
hh ' CB 21 CB 20 18 incdr 3D.83 0.65 453.32 453.12 RCP 0.07 0.67 0.44 0.06 1.15 7.22 8,35 9.10 5.46
~ / .1 , ij~i a0 . ?r, , y I" , / 1 ATE t 1\ - 1 ~ d ''`c 1 -lr rte' + ~ RAI~AGE 1 1. • ~ u' j.2D~ DI.46 CB 20 151nch 38.92 0.51 455.00 454.80 RCP 0.05 0.58 0.21 063 0.03 7.22 0,21 4.98 1.91 1, , : L~ . ~ PRIVATE CB 20 CB 78 18 inch 72.19 0.90 452.9D 45225 RCP O.i4 0.94 0.96 0.13 1.31 7.22 9.52 10.72 6.42
~ i , , f i r' ,l , '1 ~ I , t 6 8 , ~ 15' PRIVAT - --r- ~ 1 : ~ ~ ~ , . DRAINAGE DI 19 GB 18 15inch 13.87 2.67 453.25 4528A RCP 0.D6 0.71 0.31 o.D4 0.04 7,22 0.31 11.35 3.82
' f f ! i , r__ I; ,t r DRAINAGE 1 ~ / Ir + 1 + _ , ~ l ; ~ ~ ~ 1 ; ".i ,i ~ + V r` 't 1 ~ 1 ~ MENT_ 1 - 1 ft ~ ' ~ { j EASEMENT, CB 18 CB 17 18 inch 2D.78 2.79 451,83 451.25 RCP 0.25 0.87 1.58 0.22 1,57 7.22 11.41 18.88 10.57 i CB 17 CB 12 18 inch 110,31 3.60 451.00 447.03 RCP 0.01 0.90 0.07 061 1.58 7.22 71.48 21.43 11.67
1 ~ ~i, . 1 { ~ DI i6 D11S 15 inch 44.16 2.83 449.25 446.00 RGP 0.24 0.52 0.97 0.12 0.12 7.22 0.91 11.89 5,37 Ir ~ ~ { jj DI 13 CB t4 151nch 41.33 0,58 447.90 447.66 RCP O.D7 0.72 0.37 0.05 0.18 7.22 1.28 5.29 3,37
~ ' }9 CB 14 CB 12 151nch 31.39 4.57 447.56 447.38 RCP 023 0.86 1.44 0.20 0.37 7,22 271 5.26 4,09 { Lj DI 13 CB 72 15 inch 36,02 D,61 448.25 A48.03 RCP 0.07 0.73 0.37 0.05 0.05 7.22 .0.37 5.43 2,40
~ t I - 1~ _ ~1' 4• j` ~ _ CB 12 CB 11 24inch 109.50 2.98 g4fi.43 A43.17 RCP 0.10 0,89 17.65 0.09 2.09 7.22 75.21 41.99 11.65
' i 'r~l j \ CB 11 CB to 241atah 39.02 1.43 443.07 442.64 RCP 0,1a 0.9D 0.65 O,a9 2,18 7.22 15.87 29,12 8;96 ' - , tt, I jj \ CB 10 CB 5 24inch 56,63 3.99 441.04 938.78 RCP 0.15 0.9D 0.98 0.14 2.32 7.22 16.85 48.61 11,65
' - ~ { ji DI9 DI B 15 inch 26.90 0.56 440.25 440.10 RCP 0.41 0.44 1.31 0,16 O.tB 7,22 1,31 5.19 3.35
i , r f' /j/.. .1 t ,r ~ ' r. , I t r i'! 1f I { II I + , ~ ~ ~ ~ , r ,7t~` j` h 1. '1 DI8 DI 7 15 inch 45.96 0.54 440.00 439.75 RCP 0:14 0.61 0,62 0.09 0.27 7.22 7.93 5.12 3.68 ,~I' i ~j DI7 CBS 15 inch A0,36 0.62 A39.6S 439,A0 RCP 0.08 0.62 0.35 0.05 0.32 7.22 2,30 3.17 4,04
. ` r ' i f ~ ' . _ 4 + r.. .....::°r ; - , ! rr'r 4 'I I I + 4 i r" •r ~ , ` _ ~ r ` - 7. r.1• r , ff, / Jlr, ! ~ ! I ` i'~ r.~ r ~ rR i 1' tr--~_ '°'~i _ _,f L,-_..`- 1 +w ' ~ I ~ ~ ~ CB 6 C8 5 15 inch 27.71 6.27 441.25 439.53 RCP 0.09 0.89 0.58 0.08 0.08 7.22 0.58 16.09 6,21 j , ' ~ 1 : ~ ° j { jj CB 5 CB 4 24inch 71.26 1.07 438.68 437.92 RCP 0.05 0.88 0.32 O.D4 2.75 7.22 20.08 23.36 8,36
1 / r' , f I•/:, ~'T i { I I :...•r"'~ ~ ? ~ \ ~r..._ v ~ - ~ •i' , li I i ~ i ~ .I + I ? - r ) a { , ~ CB 4 GB 3 24inch 27.00 1.11 437.82 437.52 RCP 0.21 0.56 1.31 D.18 2.94 7.22 2t.3fi 25.65 8.56 ~j { CB 3 JB 2 36 inch 20.30 1.38 435.00 434.72 RCP 0.25 0.91 1.66 D.23 6,67 7.22 67.60 84.26 12.47
( 1 ~ " w•~ . . p / / / , I 'I t 6'- , I , 'r_ - Q3 ' i--._~- t_.- rrj ~ QV ~r ! i / ,y ~ i i ~r~ ~ "I, r, r'\ V ?e~ 1. 'P _ ~.7.. gI .1' 1 ,SAG r' ~1> ` i / r I "!r r A' !'.~yfw I I ~ r .'i i' i, UL 1 - "r'" (J+ r _ _ - 1, I ~ ' r ' ~ i ~ JB2 FESt 36inch 105.65 5.02 x29.30 424,00 RCP N!A tWA tJIA N1A 6.67 7.22 87.60 180,69 9.56
f i I ; , ! j ' ~ ~ _ ~6 ''r, r ` + flRA1N E " - 1-°--- i7 ' t ~ f i ! `ljl ~i 1 I1 I STRUCTURESCHEDULE
i ~r 1~ t 1 t f~ j ' t UPSTREAM UPSTREAM UPSTREAM INV OUi ~ ,1 i , ~ tr j~ } tk~. j jjtq 1j { t' STRUCTURE TfC (ft) INV 1N 1 {ft) STRUCTURE INV IN 2 {ft) STRUCTURE INV 1N 3 {ft) STRUCTURE (ft)
, ~ -1 ' , r o { ij jj j t DI46 457.50 455.00
, / , / N' / 1 ~ ~ . t ~ 1~ J 5~ t' { ~ j} ~ }j f{ D1 as 465.00 ~ a6a.55
jf { ~1 1 ~ DI44 48060 A5575 DI45 45250 1 ~ ~ ~ ~ t ~ rl~ i1 Ij ji ~ ~ 0143 447.OD 442.75 DI44 Aa2.55
J' s ! r' J/? .NJ I ~ i r>r'. ~r r r =+~'L r _ - ~I ~ ? I I .,i' / d/ ~r• ! 17 ~ r ter. ~r- 'ter r - -.M._ - - .r.~ "p f - 1 i 1' r r , . p ~ ~ I' r ~ { 1 11~ ~ I DI A2 445.50 440.25
! .lam I f I - -y - - ` ~ i ! f~ _ ! i tt ~ ! 1 t,9 Ij 1 GB at 450.75 446.50 , r 1 31 t t j 1 1 CB a0 450.89 446.14 CB 41 446.04
. i r ~ ' q t ~ ; ~ j~ ~j_ 4 { CB 39 454.22 445.27 CB 4a 445.17 ~j t ~ 0138 460,50 451.50
~ i ~ r 1 FE . - 'i• C~ ' ~~r ! c 111 1 /r r~ ? 1 ~ r ~ _ \ 94 i i ~ i r ~ _ - - T.': - - - `f ± r ! r ° ~ 11 `4 -rC i ' 1~ t 41 ~t tr ~ ; " i~~ti jj i `j+~ DI 37 457.50 451.10 DI38 451.011 i 1 t 1
r ^-i ~ i / l~ ~ 4'~".' 7 20' ~DRAIhIAGE - - - _ - r I ~1 1 ~ Y(J ; ~ S 91 CB 3s asz,a5 a57.Bo
11`' rr r / ~ .EASEMENT _ + - r;_ I 11 11 ~,q ! i4 ~i `6 j j~ ~`,1 CB 36 459.11 450,00 0137 449.50 i 1~ I j I I ~ I ~ ! t~ I ~ ~ CB 34 456.66 452.41 CB 35 448,00 GB 36 444.51 CB 39 443.41
i '1,; I I ti x+ ~ _ ~S" ~ ' i 'i, i .t.-..•.i. I I I 1 I1 1 i l k 't ~f 1 I DI33 448.50 4x4.25 I Iii 1 14 ~ff ~ 11 1 { CB 32 449.93 444.08 DI 33 443.98
1 1 i i I; i 9j j I i CB 37 480.81 442.26 CB 34 443.Si CB 32 442.16 i ' I t V j ' jj !j i { ' DI 30 446.50 441.45 Ol a3 x41.35
~ , \ y/ ` • ti • . ~ - - - - / - ~ _ • ~ 435 r. ` 1 .1 - _ _ I 4$z , t ,A G .\1 - ' i , q ji ~ ~if ~ ~ CB 29 447.31 441.10 0130 439.81 CB 31 439.71
~ r.x ti ~i ~ y., / L; _Y^ 1 i \ . \ 1T-M 1 u:,. _u i ~ i ~ • f I I ~ l 1 1 I ~ 1, ~1 q ~+`tU ~ j aim ~ i ~ C$ 28 446.34 439.40 CB 29 438.59 lj I jj ~ DI 27 444.50 440.00 E3192 439,90
N ~ ~ + CB 26 445.37 439.70 D127 439.60 } ~ ~ DI 25 448.50 ~ 439.25
w ~ i i.~... r i O 4 N ~ , 1. + ~ 1 • ~ ` { ~ 3~1; ~I I ~ CB 24 445.34 439.40 CB 26 437.14 C8 28 438.99 Di zs a37.Da
~ ~ \ f \ ~ ~ ~ ~ \ 445-..~~ L..• 1 I' ' ~ IV ` t - j t$ { DI 23 464.00 453.75 ' , , II , 44 , i I ~t I 6 ` cB 22 458.26 454.D,
t Y `~•'~,!,,,va;l'} %•?^•n •'1 \ t~ 441 / I I l / 1' I 11 j _ ' ~ , { t 1~ I ij ~1 ~ ~j { CB 21 459.52 453.77 CB 22 453.42 DI23 453.32
- \ ~ .:f • . ~ ~ ~ t \ \ t ,yea ~ ~ ~ r , - sue. • . \ \ ~>t \ ,1 J I ~ 1 1 , ~~1 1,' sue, i `I S~~ ; jj jj ~ „j ? CB 20 458.77 453.12 CB 21 454.80 DI46 452.9D ~ ' , 1 i , I I I DI 19 457,50 453,25
~ i r _ ~v , v ~ t 1 N - \ \ !^i 1 , ? ~ t 1 , SPACE .~rd ~r h Ij' Zz7~ + `1 1 I ~ 1 CB 18 457.13 452.88 D119 452.25 GB 20 451.83 li ' ~ ~ ~ ~ j ~ j} ~'i ~ ~ CB t7 457.22 451.25 CB 18 451.00
i r' \ y / ~ / % ~ \ ~ \ t ~ ry' ~ \ ,`I - e ~ ,~~Ae ~ s mil'' j - i ~ i ~ I ~ ~f i~ j „ D! 76 453.50 449.25 111 ~ / , • ; l 1 } I jj t ~j t+ t ! D! 15 453.50 448.00 DI 1fi 447.90
1 j{ CB 14 453.51 447.66 DI 16 447.56
li~ ~ t4~ ~ ~ j,~~ 11 jj I ~4~f i1 }Li~I ~ DI 13 45250 448.25
'~~1 ,1 ~ 'tl, t{4 i i} ;l it ~~i~ ( C81t 448.17 443.Q7 CB t2 447.03 CB 17 447.38 CB 14 44367
1 ~ ~ "'4 ~ - ~ \ " ` 425 _ ~ - I I k"~ ' r ~ ..r. / \ .r - - ~ ~ ~ , '-r+rf'!/ J \ , \ - _ _ 1 1 ~r~ , ..r ' i''. ~ j ~ 16 t ce 1D 4aT.54 aazsa GB 1t 4a1.Da _ A ' ti ~ D1 s 44a.5a 4x9.25
~ / ° ~4.1 ~ I ~t'1 } {j y `--I ~ t~ ii 918 448.50 440.10 919 440.00
LL s•hrr ?q° r~ _ +ti:, w,rr \ ~ ' \ ` 1__~y-_."_- - - •~r~• ' \ ,r' r , t , .w.. ' 1 i u~ , 1 `j ~ y 1 917 444,50 439.75 DI B 439.65 ,i , ' i 1 ~ ` t >i ~ ~ t`'` 1'1 { CB 6 445.50 441.25
~ rq .r \r~` r,r~-- ~ r ~ - t ,'Z r; , , ',STOR RAINAGE~ 1 ~ 1., L~} ti 'I { j' 6 1 + t/ CB 5 445,67 439.53 CB 6 438.78 GB t0 439.40 DI 7 438.fi8 r ~ ~ 1 ~ 1, t +1 ' , { { j 1 ~q j~ k CB 4 444.77 437.92 CB 5 437.62
~ r ~ , EASEME ~ t1 I ~ ° I i { { 1 j ''9 jj''\ i j ~ CB 3 x44.77 437.52 CB 4 435.72 CB 24 435.00
ti9 a I' 1 i 1~~ 1 r JB 2 445.90 434.72 CB 3 429.30 ~ +I~ i j ; I FES 7 427.00 424.00 JB 2 NIA
a,„ . .,A51< 1a 1 I
C ` - ^w,,.~ r'~ - .r.~w~ "rr 1 ~ ? 'tip`-- ~ ' _ 1't. ~ ~ , 11 i1 t (i 1 F 3 I~ ~ ~ j / j4 } ji jj i I A4°p°6°°0°AO°0000
11 r I I ~I j 1 k j} jj I VEE.QCITY DISSIPATERS eo°° ~+c1 ~A(3( °°o
\ ~ r r j' { ` t 1 . OUTLET CI.A5S LENGTH WIDTH THICKNESS ° Q °o° °p°A o
a\ ` ru,• r ' I t I I I j ~ - ~j jj NUMBER STONE (ft) (ft) (in) ~p~¢4fESSfpy9p°° n " ` I ~ -.'~!~Fi ~ ~ i ' I ~ { {j ij ~ ~ FE5 i 2 36 17.4 27 $ oo ~ ~ ° tl.
2(? TOWN• ~ , ~ t + FES 1A See 5ht SW5 for Plange Pool Dim o SEAL 4
OF CA}ZY%=~,,~';''~~ r~;~, ~ , { jj ~ jj { { p g 1 4 $ ° .e a ° ~`';r,-- ,.~UT,iLITY" 1 ~ ~ 1 , . i { }j I ~j jj jj E j r S Cj
EIS, ,~;s il.,,~ 11 { j} { j1 "pp ,y~~NGINE~~~Z4~o*° ~ML~ ~ ° °
lM_ ` rf ~ ~ ~ .~'^~i I I i I I " I app ~/n~v°°°°°°tC~. 0°°'. i1 1t~'i+`i ~ I :1'. I { 3 t~t 1~~~ ji t oooCC JG,o
3 ~ - rf it _ - - " 1 ~ I r I +.i :.w I I ...-~1~"1°.5 ~ ~1, ~°0000°0 °°p4°°
j 1~ ~
~.a---._ . i r 1 ~ .4~'~ i , I I j j$ 1 { GRAPHIC SCALE - 1, ~ CI,~, ! ~ 4t 161 sD D z5 so taD
i. -
m ~ ~ \ n°\.~"\ \ ar ,,rq °r° o°° \ \ 4" 1 i(, 1 qq \ _."1?`"tF".`i nil i ~ 1 inch -Snit.
- q. \ti °
^ - - - -
N i
A No. Revision Date B Designer Scale Sheet No.
KW KU 1" = 50' c 1 PER TOC REVIEW COMMENTS 04/10/08
2 PER TOC REVIEW COMMENTS 05/08/08 KLJ Drawn By Date TRYON VILLAGE TOWNHOMES STORM DF 0 3 PER TOC REVIEW COMMENTS 06/12/08 KLJ RSM 03/13/08 M DRAINAGE PLAN WITHERS RAVRENEL ENGINEERS 1 PLANNERS I SURVEYORS SW 2
0 4 AS PER DWO REVIEW COMMENTS 06/27/08 KLJ Checked By Job No. .
CARY WAKE COUNTY North Carolina o KU 02080134.00 111 MacKenan Drive Cary, North Carolina 27511 tel: [phone] fax: [phone] www.withersravenel.com

1 ' r" ~ \ `l I 1 NOTES:
/ ,,,71 / / / SIGHT DISTANCE._,.- - I / ~ ~ 'I I \
\ ~ 1 ~ , 1, ALL CONSTRUCTION SHALL BE IN ACCORDANCE WITH THE TOWN OF CARY STANDARDS ~i ~ = 1 I { , SPECIFICATIONS AND DETAILS, LATEST REYISON.
l l I ~ ~ ~ . i j~ ; 1 1 , W.. ~ I 1 , i { 1 I 2, ALL MANHOLES LOCATED OUTSIDE OF PAVED AREAS SHALL HAVE A RIM ELEVATION ONE
r ~ 1 , ~ , I a ~ l; ~ ~ FOOT ABOVE FINISHED GRADE.
t- ! / rr ? / ~ ~ I / ~ / r 1 q}S SSri ! I , j r I~ t I t ~ ~ ~ { !`1i ~ ~ ~ i~! ll~Ir 3. CONTRACTOR SHALL MAINTAIN ALL EROSION CONTROL STRUCTURES DURING THE LIFE OF ~ ~ THE PROJECT.
r t ~ y I:t I i I ' I I ; S ' ` ' ' I ~ `1'`1 ~ ~ I;' i { ~ ~ ~I 4, CONTRACTOR SMALL CONSTRUCT DIVERSI©N DITCHES AS NECESSARY TO ENSURE ALL I ,I~~.U,~ ( .4.1,,~.
nMrw•rVw!, `"...~.-'."°L.. ~ r ? / „r. / ~ d / ~ ,I,~ a f. J 1 i ~ ~ ~ ~ f r ! ~ I - ~ rr fit: ~ ,f `I ! I , ! SEDIMEN,.T ISDIRQCiEO INTO EROSION CONTROL MEASURES I ! l'~,"! { { i i 5. ALL CATCH BASINS SHALL BE PROTECTEd` PER TOC'STD; 4;14' UMCESS` NOTED
r% d/ rrrr VR:/'4:76 ~ ~ 1~' 11 I I ; ' 1 1 ~ `I {lfi~~. I { I, I {;'i4 OTHERWISE.
~ f\ / BQW: 450 - i I r I r 1 F---wwwr...,,www.,___ww-. t.....•...rr r ~1 rr l l../. I~y .f J•^ 1 I ! j j r I w-,_ ~ rrr ! NW. 458, !i _~i,i I I i i I ; ' `~i ! i { i lj~ I' t 6, CONTRACTOR SHALL VERIFY LOCATION OF ALL EXISTING UTILITIES PRIOR TO i { ~ I ~ ( ii !t CONSTRUCTION. LOCATION OF EXISTING UTILITIES SHOWN ON PLANS IS BASED ON BEST
~ _I_ - - - . fir. I row:' 445 r ,eflw,~44~ ••.1 ; I ! { ! i I { ~i I { (.'"l i~ , AVAILABLE INFORMATION BUT CAN BE CONSIDERED ONLY AS APPROXIMATE.
J I -w5'S- ~S _ _ao.~ ~ r ` Bow: 441' ~ f^-- ~ ' r ' ~ ! { I I f , ~ t~l I ~ j I ~ ~ ~ ~ , , 7, TdPOGRAPHIC INFORMA710N FROM SURVEY BY WITHERS AND REVENEL, INC, f ' , ~ + 8. CONTRACTOR SHALL CLEAR FOR PIPE AND CONSTRUCT PIPE, CONTRACTOR SHALL
: ~ / ~ r I w «..wwwwr_ / ..~j r ww r i w t L + w r i ~ • 1 _ f ~~'i { I I i',?4 ! ( ii I I` i ' INSTALL SILT FENC£ AND SEDEMENT BASINS AT PIPE ENDS AND DIVERSION DITCHES AND
1 I I «.•.•rrwwww,.w_wrwr. 1 'y'41 / ~ . .f / ¦454,3{_~ ~ a •j •i• , I 7 ! I J 1 I I. i t i ! I O ~ ~ i I ~ r 1 1 f`f i { al ~ I i l ( ! ii i I~ i 9. F STORM ICROSSDDRAINAGEWCAN NOT BE INSTALLED PRIOR TO GRADING, TOC STD. 4.11
1 I ~ ~ i' , I I a „r ~ r / ~ ~+ao.4o ~~T ! ! ' i ~ SIGHT DISTANCE _ ~ ; ~~~I 1 { { i ! ( 1 illy ; I ~ I'`I , SHALL BE USED TO CROSS WET WEATHER CHANNELS.
1 1 _ ~ ~ _ ~ TRIANGLE (TYP.} I ! E r r r ~ I { k! I { 1 ! i ~ I , + 10. CONTRACTOR SHALL ENSURE GRADING OPERATION IS CONDUCTED IN A MANNER THAT
1 ~l 14`I i ~ ~ 't DOES NOT ALLOW ANY SEDIMENT INTO CREEKS. ; ~ ! I ~~o ~ ~l ~ , + 11, STORM WATER DISCHARGES INTO AN UNNAMMED TRIBUTARY OF SWIFT CREEK,
I .3' + / ' ! i L, i ~ FEr,AB(~p''i' `i ~ I ~ 1 ~ I ! 1' 1 1 1 r ~ ~ '1 l ' I. I , 1 ~ } ~ I ~ ( ! ! !1 { + , 12. ALL STORM DRAINAGE PIPE SHALL BE PROTECTED DURING CONSTRUCTION IN
I 1 ~ l r' i f JI I 'Y AI•}57.11=~= I 1 'I ~ I ~r i f I ~ 1 - I r r~ I 1 I ~ ' ~ G ~ f I! , r I 'a, it II I l ( ! ! I I' 't , ACCORDANCE WITH TOC STD. DETAIL 4,12.
1 } r^" / % • , ; ~ ' • ~ 1. ONSTRUCT SWALE ;ATITOP 0~ ' 1 1 r' J ,A ' 1 ~ J r U: ~ I ~ 1 \ r f i ` r ~.OO r if 1` ; A~s4,~°t t ' 1. ' ! y; r , SLOPE TQ PROVIDED 1NA E - M.. ~ ~'i I { I i 1 ( !i ~ l~ I 13. CONTRACTOR SHALL PROVIDE RIP RAP LINED TAIL DITCHES AT THE STORM DRAINAGE "i PIPE DISCHARGE P01NTS AS REQUIRED TO ENSURE POSITfVE DRAINAGE.
{ _ ~ • 1 ~ ! , J f ' ':159' + ~ , 1 ~ - 1 I I ~ - ' I i r ;i ~ I ,1 . jJ ' r TO STRUCTURE I ._....___~~a~-'=§-` jf.~Vl I.-•,~ ~ 1 ~,~i~-'~~~,~ l~ 14. SEDIMENT BASINS SHALL BE KEPT OUT OF WETLAND AREAS. I I jj kk~ I 15, THfS SITE IS I~,QT, W[iHIN A FEMA MAPPED 100 YEAR FLOOD PLAIN. REFERENCE: FIRM
-''--L_ - ii °'x=~~ ~ ~ l~ii +,+111 MAP 371$3CO2$O E, DATED MAY 6, 2006.
' i - I' ( I ji { {1'+ '~I,', 16. A PRECQNSTRUCTION MEETING MAY BE REQUIRED FOR THIS CONSTRUCTION. I ' ` :~~o ~ ~I~ ~ s ~ 17, PERMANENT GROUND COVER SHALL BE ESTA8U5HEO EITHER IN 15 WORKING DAYS OR
~ ; , \ / ~ - J , 1 J , • ~ ` Ad•159aR't`- 1, ti ( t I 3} ~ i1"' 1 , 90 CALENDAR DAYS, WHICHEVER IS SHORTER, PER TOWN OF CARY REQUIREMENTS
s~", { 1 r((" " ( ~g; i! I ~ , I I AFTER CONSTRUCTION I5 COMPLETE. - ; ~ f1 ` li ~ i~, I ' 18. TOPSdIL SHALL BE WASTED OFF5ITE OR IN FELL AREAS AS SHOWN.
, ~ ~ ~ PI' .3
f •h ~ ~ r' r, ,80W:, 4~4~/ ~f9 ' ` tiE~,33 r ,r k i4ND5 ' ° h ~ ~ ~ } 1~, I ; 19. TREE PROTECTION FENCING SHALL 8E INSTALLED AND INSPECTED PRIOR TO ISSUANCE _ ~ 1 ( t`lit O,F A GRADING PERMIT. ,FENCING SHALL NOT BE REQUIRED ADJACENT i0 AREAS ' 1 i9 f~. I~'1, ~ ~ ~ WITHOUT WOODED VEGETATION;
l ` ~ r- / fry ~ r• / ! /t/~ ..FfEr45 r r R'•• .rY I ( 1. h hh \ \ r ~ • / r i ~ r ! ~ r ~ ' f' J/ P) 7 ~(+'F'Ei1 ~tx' ~ J/~ ' ,'C`~ ' ' , ~ l IfE•A6~ ~ i j ~ a•' ~ ` 1,~ ~:~1 20. ALL GATGH BASIN HOODS SHALL BE STAMPED "DRAINS TO RIVER" IN ACCORDANCE WITH
hh , \ / , ' rfrr., rrr , ; , ~ pEN" ~ sue' r @' 7.16. ' C8J ~ ! r` r 1 i 1 •+87 \ hh \ ,h \ / -'7 . SPACES :r ; FYE•~t55b7 r.~~ rr rr ~ i / i 1 ~ 1 bj I fi. TOWN dF CARY STANDARDS. ~ r ~ f N~'^` I (~I~l''; I` 2i, ALL CUT AND FILL SLOPES SHALL BE STABILIZED WITHIN 15 DAYS OF THE COMPLETION
h \ , r Th r45~ / / / i CFEr4.'hI.SJ ? , V ' j I. 64 A \ ~ • ~t 64 ~ ;r?i lip ~ts~~ OF ANY PHASE OF GRADING OR 90 CALENDAR PAYS, WHICHEVER 15 SHORTER, ANY
h b ah / f~/ r ! ~ '•r ! / l 8 44tf r r ~ ~ . , X355. fi ~ ' i / I ~ .A68, \ ! ~ ` r J hh \ / ;:yf~:' ~ / / ,'r, ' / , o / i .fFEM55•$Yr'`' r . r l' ~ i { !1 l {~{,~t', INACTIVE DENUDED AREAS SHALL BE STABILIZED WITHIN 30 DAYS. r~ea ~ : ~ ; ~ 1 ! jl. III y ~ !'}i'i1+I,` 22. ALL STREETS ADJACENT TO THE PROJECT SHALL BE KEPT CLEAN AT ALL TIMES OR A
6'~ ~ „ . ~ I tj' ~ WASH STAFIQN WILL BE REQUIRED.
h ~ ? / 4 ~ f , 5`s5' fw / ~ ; fad' k \ `,r~ti".i !I'J ~ ~ ~ I / r',• I I ' •151 CR<5 ~f I I,I~ ~ I 23, THE PROJECT MEETS ALL REQUIREMENTS RELATIVE TO BEST MANAGEMENT PRACTICES CR+<69. I 1 ~ ~ l l
y \ A'A r' •r'! 't i r . / / / ~AJ ! / ( 'p7E¦159.5C f •167.33 ha \ / 'J.,~ • r I r' , , FIE: Op • :y/ 'p, i_e r~ ' { ! . f !l I 1 ~ + i AND ENGiNEEREb STORM WATER CONTROL 5TRUCTURE5 AS OUTLINED IN THE TOWN 0~
~ ~ / ' , , / c?E;~su , a to .SOD i 3 \ ~ ~ , r. / :,32:33' 1 &7,., _ _ 1 1 I 62 ~ ~ ~ ~ h { ( I, 1, CARY UNIFIED DEVELOPMENT ORDINANCE CHAPTER 10, PART 3. x" I ~ { ( it-- _.li~l Il,~l ~ 24. RISER STRUCTURES MUST BE ON SITE .BEFORE GRADING PERMIT IS ISSUED.
~ I+ ~ • r.• J' ~ / : `i ` / t r •454 \.1,'' I i'-- •167.~J' _ 1 ¦A67 h \ Jint i r .I ~ 49. , / ' ¦A59 I' i 1 i h \ , r - l ' Ifr/ i,~~'/, t'; pE¦4 L+B,: ~ ~ ~J ~ J,' , ~ -X67.33, (t._- I ~ I I ! 25. THE BUILDING RESTRICTION FLOOD LINE (2' ABOVE THE 100 YR FLOOD LINE)SHALL BE
f ` hh ! f / ! .,f/ / I rre~f J % ,r ' ^.1 • / ~ LJ . ' 4 : i ~M a' I `,~'1fE•A5B.1 ~ 6U i ' t { l iA6& 61- , ' I ~ ~ 11 lk STAKED IN THE FIELD ONCE .ROUGH GRADING HAS BEEN PERFORMED AND BEFORE THE i ++ee: I i { ~ ~ ~ FIRST BUILDING PAD IS STAKED,
h e f i r , / ` "3%vj l ' ; . : FFEr 13{p. ~ M M57 i .A67 r ' : / ~ ,y,~v~ k~Cy , ? f ~ CFE'; 7r 4~ / ~ .:.7U ¦4 .sG` j 'i I ,~467~I.. ! 1 f ~
h *w ~ ! ~ / „ , "r . / , . ~r ? r CFE.45 N. ' ? `t, I et5 - ; i _-y-- r I ° !1 it " ~ I' , . „1
h \ ~ j , ! , ! ; f i / /r ~ ¦g6ff.33;' r ' J ;.t ~ A .17 ~ i ¦A671,~3 i ' k - 1 { 1a \ h, r..•- N,f; I r /i' iJ r` r`• I~ ? t'~E.156.88 t ~ ~ ~ i •167.33 70
hh ? f, :'R^ / l r ! / %/I % ,r. ':i ,r , •456 v, ~ •467 - h r~ ~ r ? h J I f r' - ,'i ` / ! ~D ~ 5 . 7 i I I , r ¦48b
I I ( 1!_, : , ,4 TOWN OF CARY PLANNING DEPARTMENT REQUIRED GENERAL NOTES _ t
, h . ~ SANITARY S i',' ~iu• ~ '7 , ~t { _ 70; I ffEIQ7 f r~ _ ~f ~ ~ ~ A. TO MINIMIZE DAMAGE TO .EXISTING TREES NEAR TWE INTERIQR EDGE OF t nE+e~ r ~ ' I j! . a! ' ~ - I~,l; BUFFERS ANOSTREETSCAPES, THE CONTRACTOR SHALL CUT MINIMUM 2"
~ ~ ~ hh'EASEMEk •r~E ; ' ' ; },5 , . r~ , , I ; I'• . Fr •167.t~--'-- { ` ~4 ~,'•",'h r,',.' i',f .r ? '';;,~5 1 ~ ,66:6:..___:- 1- 1' ~n-, 8 ~ ! P ~l { '`1`;~ RATHERETHAN TEARH ROOTSS OF DISTURBANCE, SO AS TO CUT,
'}'oh _ / r i r + f'~ ~r';sow: 'CiWA8.08 % C8 ! I , rrE•4 ` \ h ? li ~ I q~ I _ 8- ti r r r CC r~ I C?E¦4 I { 71 I I ¦1 7 t ~ , ,
r ! ! ~ % ~ U/~ v~ I S\y, } i . y- .66.67 W.; 1 ' Yy r \ ^~.•r r /~•i r ,/%;~0 433: i r` .y ;r ' b• i •4s2 t , T ~6 ~ I I ! !!'ti it 1 P 6. THE TREE PROTECTION FENCE SHALL BE MAINTAINED ON THE SITE UNTIL
_ " 7 ~ + ~ { _ i{ ; ~ ~ ALL 51TE WORK IS COMPLETED ANO THE FINAL SITE INSPECTION PRIOR TO THE CERTIFICATE OF OCCUPANCY (CO) 15 SCHEDULER. THE FENCING
\ h.~ r' '•r. ,r i .I TJi•15t.17 ¦ 1 r J , , ~ I •A •46533 y B ~~r`~ 1 pry, ~ ~ SHALL BE REMOVED PRIOR TO FINAL SITE INSPECTION FOR THE CO. _J',~t I ! _~~1
\ ? , ~ ~ , , 1 rte, ~ + ) i ,,'g2 . ~ , PACE ~ 1 .1•
\ I~' • x1 , , ~ I ~ 1 ; IitE•+?4ta7 I { - " / .L...' ~ ,;fr , I\ Jt t w; ~ i .15p ¦A6Ta'O - t 1 1
/ ••%i l 1, rr 1 , :r,. t ' t\ 1 1.. RE•48}+7, ~ I i_ ill ~fll _ll.l'" NOTES: 1.. ' RE",~6k Y~ . "Ifli 11 I 1, LEVEL SPREADERS ON THE PROJECT MUST BE LOCATED ON COMMON OPEN
~ r f E ; ' 1i71 ~ r'' .•T I --ti< 1 1,, aa: `s.• ' ~"'i~' 7 - ~ l j! \ it a~;~ ~i ` ylli SPACE, HAVE ACCESS AND MAINTENANCE EASEMENTS LOCATEp AROUND
\ J' , ,r,- ; I 1I' r + + ;F.. •si6.5'o', i ` ~ 80 4` ' ! •AS+,OQ r _ 4 1 THEM AND INCLUDE AN OPERATIONS ANb MAINTENANCE MANUAL AND A ~ ~ ~ ` II~~ 'll ~ ~ ] !i MAINTENANCE AGREEMENT.
\ / Ih~ ..•r• I y r /b I ~l/ ~ , S , t, .IA5.8) ` ~~l ` rt r` - ~ ~ _ 1. ~•+64 \ / J r / I t ' 1 off r r" l t,.
RRTT ~~ff 1-+ ~ ~ 1t I l~
\ f ' , ~ ~ ..i . i / j , I/ ~i 'i i y it AA 1 \ 1~~ 1 ~`^..b ~ , -I J i I.. ' 1 PFE•461. ' 1 ~ J! 1, i rt , 1 I 115,41 I / E. r , z T t-" - C ¦1 1 \ ? ~ ti , 1 }I ~,D •+45.83" { 9~'1 - ~ .185.3--_:' 1_ 6 / ~ i of 't , ,i 3 ~ ,a77:i15 .,µ6sp i~f~ _ - •.A61,J3 1 ,t9a
? ''a/•• / ~ 1+ 1 1 r Es!gB ~Od i1 I? L~- ¦18 ~ _ , . . : . ~ ? r r i ,1 + 1 f"i• ~ I ti , 1` ' ` PADfN FE•4A ,r ~ \ - ~ - - llor ~I
\ / I , ~ & i+Ary•4/ 'M 87 ' ? , •461.3' '
, / I i 1 ` L P Al ~ ? h~•-~ i - ? ; y51.33 41 i .i ~ / ,?',r 9 , TOW: 445 1 ~ S`~ , 1 r' ''r / , I , t , PA1~.1/5 - :P •1 t 1 -%/~l t BONk 433'' ; V; ``,~`.P1117•M ~ Q ~ ti-i - 7r ~;~53 , 1i! f 1 ..iyr~ fiE451S9 f' I' I{ !1 Jll S"F? !1 I '
1{ _ r //I/ r t ; ,1 t-- ~ , ,G76 ' - - ~ 7/.~~ .,i.•' fiEr'159 I \ 4 . ' r 1 ~p ' I STORM ~YA -AA6~o. :AIe.67 $ 1,. ~ - -r-: _ - _ - / t • ! , "S I ~ ( ~r ¦ , ~ r' , i i„'^.1"1 I,._ _ - , I. : I FF •A59.63• 1 , 6fE•~56
\ L.'' r ~ q r ~ t , .A45.8,- " ~ " I ~ ~ \ E•11b. {E.146.6 ' -i -1- - r r ~ ~ _ 59.33 / / /D• sB \ NAGS : \ Ir-.--~_ • _-I,: - _ yr
~ ~ ` /I + i I "r - i ~ ,.I~ auI u ++~~AZ •118,(1{ '$2'- - ~ _ _ _.7~- - ~ ~ -1 .1~ ,C~t1' \ tt ~ / 1~ , J' I i ~ w r, ' •lii 7. ¦A4lG~., 1- •A49.5t •A59, - j.~ .454- ~ 5 ~52 . _ 1 ~ ; 1 I
i r 1'r I t _ _ ~ ~ ~ 6 J ` ~ . ~ :117 7, 1 •A !I .4 I 7 i M 5 ; ~ 59.33 ~t'ft t} t 1 ~/I ? Y `FE.~! 1 rr - - t ` i 7.33 I ¦ .19.1 •50.5 i .1 . •1 ~ ' C ` ,
1? .•1• t~ ~ f/' :7.1 t'r? /~I ; l .r - '8~ 1" -."r, 143 - I ~ . PJE.A _ r , '5 1!!'
r • - q
-I F' i/ AO~A4 FFE•11Q'1 , r ~ _ _ _ i~" ..r ? ~1 /+''f ~ •'JI 1 1 r GFE¦IAS ~•i. ` _ _ rte. , ~ 1 ~/{y¢~ h, ~ ,,E~456. I ' I I. ! I r{ ji ~i g 11 1
~ ~ Jf ~ I i ~ - - r C¦416.1 i . r _ r - _,g $'20~A ~i I f` f r

/ ~ • , °•~c0'-' I / / ?w~~ES 1A ----1^'•" ~ ;rr .~.~`~+'r \ ,r l~ fFE•M6• r, +~r~~G - ' - / ' ` w+..,, ' ~ ` ~ r - - #E•115 7 Yl~. j i ~ tea. - I % ~ I ~ I ~1 t .w / \1 t ~ / r/ .f/ .••.,:,ti~,r r ~ ` t r PAD•41 ~ r :r"".. / 1 i I 1 ;I i j t 49 i ~ 1 I !i 1! `~.l_. li ~j { ~
~i1 1 ) ~ ~ ( r r - 4 ' r i i + r - ¦r' + - - ry - ,~,r r' •Fy~ r t{ 1 / 1~ ~ t1 /t / rlr- rr~~ \ t ~r A4 i r ' _ _ r r 1 '
r~p ' r 1 1 1 , `t ti\ ~ ~ ~ GFE•4A6.3 t 'r , i _ r 1 t i i ~ ~!l 1 it li~~l.
* r 't ~ ry ~ r/ •f16. ~L~--: i_ ' - _r- I - .I i .r.•.1 1 i y,, Zr~ ~ ~ I I 1i ! ! , ~ / ~y~•,h ~ t__ ~ r ~•(9E•N FFe+~ `-..lU i f _ - i .r If
+ ? ? , •148.1 ~ I I r i I I i{ \ I ' 4 ~ 7 s ` • ` ~ ~ `y.y' r GiE•410.1 .AA ' i. J ~ i~L.~ i ' ~I~W~:'%452' I{ { ~ t I
~i ~rr I \ _ •11•^•••e•_ ~ )017,1 \ ~1 , r r d IT'E¦A49. FiE•M9.1 ~3-- -=35 :'~VU..•945.,.•. ! I ~ ~ I I I r 4 ~ \ ,r. - - ' ~ p,~ ~ r r IQ ~t7E•A49.1 •1511.50 .1 I 'i I 1 ~ y1.. 1 ` - / "U \ r ~ CIE•118, 7G7E•118. E•l50.00 ~ - . ~ t I I 1 { I I I . 1 ~ ~ ~ ( `I it I !1 t f',
, f/~"' ~ ° , A35 ~ ...,ti \ . , r `ew.4 PN3•A18• •+150.00 ~1 { A)+.h \ '`~l\~ ~,y ~----..e!_..._ - ~ l ~i.~ ' PAC•1 N7.449.63 3D.A19.83 ..t • ..rr.'. I I , ~Z{ V V ~ ~ ;46 ~ , ; , S ! ~ !l !I l ~ ;
i \ \ \ ~'-"w.' - ` ~ `~1+\ _ ~ ';y. r~ 4>\_ t _ \ , i` L- - r. I i r i !ri /C7 I I I { 1 i,l+, _ tit. =,1 ~ ~ ` ~ / -..,r•r+..-\t `U 7 ~i.___-i i i_ ~ I i .I1JW:•!TJJ•.•.•. f I l I + I t II
R~it 'y ~ ~ ~ / / ~ \ 1 I \ 'i - - •~BOW:• 4,44• ~ I 'r rrlr ~ l r I i zz `,9f~W: 418 ) ~ _ 1 / I ~ 44g 1 ~ + c ~ s 1 1lI~, ( li } I
~ ~ . \ / ~ \ , I ~l ~ , _ _ 445 J Il 1 I '~1 ` ~ ,£.111.6 - - - { I 1 ~ ll l 11 l! 1
Y • \ ~ ? / .-r,~,. ~ ~ t i ~ w. __~'"_!c,.-_ I ~O t i r ~ l 1~. / % ~t J r ! , ! 1 1 ~ ~
t \i~i i - \ / J ~ - ~t;..tn` + ~ ',/r/; . ~ \ ~ 441 ~ li ~ ` ~ I1 / ~ 1 ~ \ 3; ' ! I i Ili !l ~ 11 !
11 L ! r" I 1 - ~ s.. Y,,. . . \ ZdrV~ . ~ 1 t+i V-N • ' ! 1
111 ~ / ! ! .e / 1 ~ .453 ~ 1 l ' ' 1 / _ - , " ' ~ ' ,`\`::a~ tt ~ SPA Jr' 1 ~7 ~ , ' ~ ,~l { 1, i! 11
ar 1 `a.~, ) h. - ~ ZON „r• ` I I x•153 /
1 .1~1 l ~Il I 11 I l 1l
~ '~a.. ` - '.1/!"~ _ \ •,I ~ I• Zn . ~ - 'rte J l i'r i l' ~ • ~or,lo, i 11 i
m r j i / \ y~~~\. { l~ \ , .J. jr\ i7E• y1 >r,) ••~ti ~ 'isErls
01~ 1 I I 11 i , 11
.Ilt ! ~ ~ ti i l
_ _ _ - ' 1, pow: 453 . ,
V ~y4r _.`a~` - ' / \ \ - ; try \i ' .1 \ ti, ` , nEr111 , ' . 3
a ~ - _ - i ~ . TOW: 444.5 g ~ i! ' r451 111 I~1 1! il,, ` ~ s~,, l {I l llrl
C 4 '~'C~ a+.. ~ r.. ` ~ _ ~ \ ~ I3QW: 44~.~ `1 ' ' . ~ ' !i! 11 ~ aog9ocooooolnaa ~ r
l`'~~ 1`r ~ ~ I 1 ~i 1 rj. {I `~Y~ ~ ooh •~N ~A(~~~'~ ` ~~.~a~ ,'~,'•I' i {11 ,o°`o ~°°FESSip°o/ ao
, T \ • .~f~ff( i/ I I 111 ~ i! I l! 1l a ~oQ Q ~ °a a J e° a~ q e e
o a ° o t~.,rl 1~\ .~JI III ti~~l i } 1{ { ~ ii p Q JL~ L O ~
z w =~x+,...,.,,- '~.~SIGKT DISTANCE' 1`\ lA-_. v ~ '~''„~I I ~
\ 1 ~l a c ~ n° ~ ,v'~1 1 ~ ~I I I ~ i ~ 1~ ~ ~ a$ °ao oa ~ pay
~ ~ ~ , `~1 11 ' I 1111! 1 °o~ °°,FyG I N~•~'~a° ~v,~
\ ' ~ l oonocoo oQp6o ~j
~~,K % 111 : i ` 3 I ~ ~ 11 \ 1 1~1 t i l 1' ±y,~ ~ l i
y!' ~ \ ~ ,tl felt ,111 ~ Ii'~
p /
UUU ~ .r ~ - I,1, l ~ GRAPHIC SCALE ' - .I I I,~ { it
~ ~ I EfP ; i 11~ ~ ~ ( 50 U 25 50 7IX1 11 11
I
- , iifl~,l1`'ml~'I~~ ~ ~ 1! finch=SQ$.
- - - - - - - - - - - - - - - - - - - -
0
r I n
No. Revision Date B Designer Scale
1 PER TOC REVIEW COMMENTS 04/10/08 KLJ KW 1" = 50, c a 2 PER TOC REVIEW COMMENTS 05/08/08 KLJ Drawn By Dale WITHERS Sheet No.
~ 3 PER TOC REVIEW COMMENTS 06/1x/08 KLJ RSM 03 13/08 TRYON VILLAGE TOWNHOMES GRADI~ ?~D I V PLAN IN ER 1 PLANNERS 33]
o Checked By lob No. I SURVEYORS
KW 02080134.00 ARY WAKE COUNTY North Carolina a C 111 MacKenan Drive Cary, North Carolina 27511 tel: [phone] fax: [phone] www.withersravenel.com
Y

HANDWHEEL
ELEV. _ TRASH RACK EARTHEN BERM EMERGENCY SPILLWAY
OUTLET STRUCTURE (SEE DETAIL)
SEE DETAIL . 10'L BROADCRESTED Et. = 434.5D
5 WEIR EMERGENCY TOP OF BERM ELEV. = 434.54 MlN. SPILLWAY
I I, II I I-1 1 1 ~ I I I-1' ;III-1 I i~l _ _ I~I I h ~
HANDWHEEL EMERGENCY SPILLWAY CREST ELEV, ~ 433.50 ELEV. = 432.40 £L. - 433.50 ~I I I,, I~ i-I i I-I - _ T- 1=l 11=1 I I-
12 W ARUATIC SHELF ~ 1 O:1 SLOPE - - (TOP. OF RISER} ELEV. 431:00 TO 430,00 . I! 1-111=11 --ill-III I l hl 1 1 I I =Ti_
- , BERM: - .51 SECTION - „ 10..
TOP OF RISER ELEV. - 432.40 1 LF 2 DIA. INVERTED s" (TYP.)
DIP SIPHON NON-,WOVEN GEOTEXTiLE FABRIC SHALL 5'x5' `Al
NORMAL POOL ELEV. - 431.00 D BE PLACED AROUND EACH JOINT OF
R P ARR I i STRIPS NWSE = 431.00 UPPER INV. DIP SIPHON - C B EL N 2 W DE _J 1 CENTERED ON JOINT. (PRE GASTRSECTIONS) 4" piA. PLUG VALVE (SEE E M E R V E N CY S P I LL.WAY OUTLET STRUCTURE
1 10 BARREL FE5) 1 { MATERIAL SPECIFICATIONS) N.T.S. 1
i - IA 1 RTED DIP SIPHON 1 INV. OUT = 427.00 1 ~ 1
d LF 2 D NVE n N ~y. ~ NOTE:
WATER TIGHT GASKET SEAL SKIMMER MAY VARY SLIGHTLY VEN FROM ILLUSTRATION SCREEN ACCESSIBLE THROUGH DOOR
.1 in
3• 7 62 LF - 30" RCP O-RING RCP ~ 1,61% (CL. III RCP) RAIN INV. ELEV. = 427.00 3 "RCP 0-RING RCP
~ FOREBAY 3• WATERTIGHT SEAL TO BE PROVIDED ° ;
- AT RISER/BARREL INTERFACE 1 1 19.3 xt9.5 PLUNGE POOL n REL iNV. IN = 428.0
BARREL NCDOT CLASS "8 ar 1" RIP-RAP DRAIN TRASH GUARD (SEE DETAIL} ~1 tr
.INLET PIPE ~ ~ INV, IN = 428.00 D50 = 12" TR Tf DIP INV. (SEE CONS UC ON -
R I F R TI 3 LF - 4" DIA. DIP ANTI-SEEP COLLAR (2) SEEP COLLARS TO ELEV. = 427,00 PLANS FO N 0 MA ON) FLOAT
" BE SPACED AT 20 O.C. (SEE DETAIL}, 4 DIA, PLUG VALVE (SEE COLLARS SHALL BE PLACED A MINIMUM 4 4 ~ s d ~ a 4 d ~
OUTLET STRUCTURE OF 2 FEET FROM PIPE JOINTS. 3 LF - 4" DIA. D1 d M
MATERIAL SPECIFICATIONS) 5 • KEY TRENCH {SEE BERM MIN. Q
R T A TI-F A ON B OCK SOIL AND COMPACTION CONC E E N LOT TI L FLEXIBLE JOINT
SPECIFICATIONS) (SEE OUTLET STRUCTURE DETAIL) ARREL PIPE LONGER THAN SHOWN RETE 4" DIP W/2" ORIFICE NOT INCLUDED WITH SKIMMER
NOTE: CIRCULAR CONCRETE ANTE-FLOTATION BLOCK BLOCK PLATE TO LEVEL OUTLET END; CONNECTION SUPPLIED BY USER
RISER BARREL, SKIMMER ANO OUTLET PIPE SHALL BE INSTALLED PRIOR TO SPREADER TO OUTLET PIPE OR RISER
THE BEGINNING OF OVERALL SITE GRADING AND SHALL BE UTILIZED AS A SEDIMENT CONTROL DEVICE DURING ROADWAY AND UTILITY CONSTRUCTION. UTLE
0 PERMANENT DAM CROSS SECTION ONCE SITE HAS BEEN STABILIZED AND GRADING IS COMPLETED THE BA51N OUTLET STRUCTURE DETAIL SKIMMER DETAIL. N.T.S. N.T.S.
N.T,S. SHALL BE .CLEANED OUT ANO STABILIZEp, THE SKIMMER DEVICE SHALL
8E REMOVED,
WET DETENTION POND DESIGN
6.3' DIA. REBAR RING POND OUTLET STRUCTURE NOTES:
4.1' OIA. REBAR RING T R IR FAT 7 TH 1. 30 RCP OUTLET BARREL SHALL BE CLASS III RCP MEETING HE EQU EMENTS 0 S M C 6. E DIMENSIONS ELEV. (Fr.)
PIPE JOINTS SHALL 8E "0"-RING TYPE JOINT. NORMAL POOL 1701.7 SF 431.00
POND BOTTOM 8318 SF 427.00
2. THE MANHOLE OUTLET RISER SHALL BE 5'x5' I.D., MEETING ASTM C-478R AASHTO M-199 MONOLITHIC BASE. THE MANHOLE JOINTS SHALL BE ASTM C-443 RUBBER GASKET JOINTS. MANHOLE JOINTS SHALL TOP OF DAM WIDTH 5' 434.50
BE SECURELY ANCHOREp TOGETHER TO PREVENT SEPARATION. CONTRACTOR iS RESPONSIBLE FOR EMERGENCY SPILLWAY WIDTH 10' 433.50
" ~ " , „ DESIGN OF THE MANHOLE SECTION ANCHORING SYSTEM. 6.3 LFx2 x2 xt/4 ANGLE 2 6 1 YEAR STORM SIPHON 2" 431.00
3, OUTLET STRUCTURES SHALL BE PROVIDED WITH STEPS 1'-2" ON CENTER. STEPS SHALL BE IN RISER -DIM AND TOP 5'x5' 432:40
1 ~ ACCORDANCE WITH NCDOT STD. 840.66. OUTLET PIPE SIZE AND INVERT EN 30" RCP 428.00
ELEV. = 432.40 OUTLET PfPE LENGTH AND [NVERT OUT 62 LF 427.00
OP OF RISER 1' 4, CONCRETE ANTI-FLOTATION BLOCK SHALL BE INTEGRALLY ATTACHED TO RISER BASE TO PREVENT ~ ) RISER/BLOCK SEPARATION, OR PRECAST AS THE EXTENDED BASE OF THE MANHOLE DURING FABRICATION. ANIT-SEEP COLLAR SIZE 7'x7' N/A
IF THE CONCRETE ANTI-FLOTATION BLOCK IS CAST SEPARATE FROM THE MANHOLE ASSEMBLY THE #4 REBAR NTRACTOR SHALL BE RESPONSIBLE fOR ANCHORING THE ANTI-FLOTATION BLOCK TO THE MANHOLE DRAIN PIPE DIA. AND INVERT 4" 427.00
(TYP.) CO ~4 REBAR RISER ASSEMBLY, r
5' ' - ~ %i .e OUTLET STRUCTURE MATERIAL SPECIFICATIONS: ~ ~ i ` '
0.73' ;:l +
nP• 1. ALL POURED CONCRETE SHALL BE MINIMUM 3000 PSI {28 DAY} UNLESS OTHERWISE NOTED, _ I ; . rl . ~ ~ ~ 1 ~ ~ ~1 ~ 1 ? ~ I I
~ ~ C " ~ 4 ~~S`NI ~~ri i~ ass ; ' i~',~,' ' ~ ' ~ r- _ ~ ,r ~ ~ ~ ~ t
6' 2. GEOTEXTILE FABRIC FOR THE 30 RCP OUTLET BARREL JOINTS SHALL BE AMOCO STYLE 553 - i POLYPROPYLENE NON-WOVEN NEEDLE PUNCHED OR APPROVED EQUAL (NON-WOVEN FABRIC} ~ ~ ,
~ ~ !T i', , THIS SECTION OF TRASH RACK ELEVATION VIEW . • i ~ ~ ; ~ ~ a ~ 1 ~ ~ i ! I +
To BE HANGED TO ALLDw Q~RM SOIL AND COMPACTION SPECIFICATIONS: ~ % I ~ 1 JJ ! "
T BE i ~ ~ I;V ACCESS (OPEN NG 0 HINGE 5 X 5 RISER • / r .THE STEPS 1. ALL FILL SOILS FOR BERM SECTION SHALL BE CLEAN, IMPERMEABLE MATERIAL AND COMPACTED TO RT , CENTERED OVER ) I
LEAST 95% STANDARD PROCTOR MAXIMUM DRY DENSITY, AT OPTIMUM MOISTURE CONTENT. NO BLASTED , ~ ~ + + ~ 10 EMERGENCY •iL'LN1A~L1N~"`t' ~r•~'~' t ii 1 ~ 1 ti { 4 {i ~~~r ~ ~ ~ ~
MATERIALS SHALL BE USED IN THE EMBANKMENT CONSTRUCTION. SOILS SHALL NOT EXHIBIT SIGNIFICANT ~ 1,p EMERGE' C . , SHRINK/SWELL OR DISPERSIVE CHARACTERISTICS. ON-SITE GEOTECHNICAL ENGINEER SHALL APPROVE ~ SPILLWAY ANC SPILLWAYS AND,~~~ OWN STREFyK+II ~ ~ i 1 ; ~ ~ ~ [ I I < < i ~ ~
SIDE YJITH JPYRI PAD LDCK THE SOILS FOR PLACEMENT WITHIN THE BERM SECTION. THE GEOTECHNICAL ENGINEER SHALL ALSO ; , i ! J PER N SIDE WITH JPYRI{M'AT If~STA1~CED' ~ ~ I ~ ~ ~ ti ~ ~ ' ! j PER MANUFACT~fRERS~ ~ 1 ~ j ~ ` ~ 1 i ~ t I i , \ r i ~ ~
SPECIFY THE METHODS TO BE USED fOR PLACEMENT OF FILL. IF ADDITIONAL USES PLANNED UPON THE / R TI ! I T TH T H i ENGINEER SHALL SPECIFY SOILS SUITABLE FOR ~ i ; ; /R C BE M SEC ON (BU LD NGS, E C.), E GEO EC N CAL i , ; ~R COMi~lEN4ATi0NS)I i ~ ` , ~ ~ ~i~ ~ i ` 's ~ I
THAT ADDITIONAL USE. i ! ~ ' ~ r ~
i' ~ ! 2. IN ALL FILL AREAS OF THE BERM, A SOILS COMPACTION TEST SHALL BE CONDUCTED EACH 2500 SQUARE ~ i
~ ) , FEET PER VERTICAL FOOT OF FILL. ! /
1 3. A KEY TRENCH IS TO BE PROVIDED IN ALL FILL AREAS. TRENCH TO EXTEND A MINIMUM OF FNE FEET _ i f
BELOW EXISTING GRADE. SOILS AND COMPACTION FOR KEY TRENCH SHALL MEET ALL REQUIREMENT OF '
~ / #4 REBAR WELDED ~1 ABOVE. i ~ % ~ I~ ~ % ~ ~ it ~ 1 ~ ti ~ 1 1 ~ ~ i t ~ t + i ~ ~
P N TE . _ ~ ' (TY {SEE a s) , / ; 4. NO TREES OF ANY TYPE MAY BE LOCATED ON THE BERM SECTION, ' , /
• % i
5. FILL PLACEMENT SHALL NOT EXCEED A MAXIMUM S LIFT. EACH LIFT SHALL BE COMiNUOUS FOR THE - ; • / • ; ' - ~ / ENTIRE LENGTH OF EMBANKMENT, BEFORE PLACEMENT OF Flll FOR THE BERM SECTION, ALL ~ / ~ ~ ~ i 1 % ~ 1 ~ 1
UNSUITABLE MATERIAL SHALL BE REMOVED AND THE SURFACE PROPERLY PREPARED FOR FILL PLACEMENT. ~ r'' . i ~ % +
•
STATEMENT OF RESPONSIBILITY: ~ ' ti. I . i
ITY TH ~ r ~ i ~ t%' 6,0' 1. ALL REQUIRED MAINTENANCE AND INSPECTEONS OF THIS FACILITY SHALL BE THE RESPONSIBLE OF E f j
7RYON VILLAGE TOWNHOME ASSOCIATION, PER THE EXECUTED OPERATION AND MAINTENANCE AGREEMENT , , I LF OF 4 PVC ®.0: O% ~ _
FOR THIS FACILITY. ~ ~ - INV, IN = 427.00 ~ P N VIW ~ ~ / ( , I ' i ~ I ~ ~ 1 ~
INV. OUT = 42fi.61 • _ / / ~ / ~
~ NOTES: , / ' / z ~ , ~ / ` ~
U1 i i i / ~ / i. ALL REBAR TO 8E #4 REBAR. ~ ~ i i ~ 1 t i
W 2. ALL REBAR. AND ANGLES TO BE GALVANIZED WITH A BITUMINOUS COATING. n w n / f ~ Y /
3. THE HOT-DIPPED, GALVANIZED 2x2 x1/4 ANGLES SHALL BE WELDED TO THE REBAR TRASH / / / ~ / RACK. .ONCE WELDED, THE ENTIRE ASSEMBLY SHALL BE PLACED ONTO THE MANHOLE RISER CONCRETE ANTI-FLOTATION BLOCK -
3 LF 4" DEA, DIP f j / / d WITH ANGLES SITTING DIRECTLY ON TOP OF THE RISER. / / / " " " (SEE CR05S-SECTION) ~ /
N 4. GAPS TO BE NO SMALLER THAN 6X6 OR LARGER THAN 12 x12 / ~ / ; ~ ~ ` \ ~
T ~ PR ~A R FORS / ~ ~ ! / BOL 6' (TYP•} $ LEVEL S E DE y 1 °i REATI~IENT Of FIRST INCH Op / f i i /
. 3 OND DISHARGE OF 0.3 CF / ,r / f
N n w , / ~ % 3 / 2 x2 ANGLE IRON TRASH RACK ABOVE) 2 / r
m 5,~, ~ ~ / / 1 i ~
ANCHOR TRASH RACK TO RISER WALL WITH FOUR EQUALLY SPACED I f ~ ' HOT-DIPPED GALVANIZED STEEL CLAMPS. EACH CLAMP ATTACHED TO MANHOLE i .
o " " T M (PRE C S SEC ON} ~ / RISER BY 2-3 x1 4 CONCRETE ANCHOR BOLTS EACH CLAMP TO BE COA ED ` / ~ 9 / ~ 2 ~ / / i r ~ ~
W/ A BITUMINOUS COATING. ~ ~ / / f r' ~ ~ i ~ ~
9 / ~ ' ti ~ ~
_ ~ / c ~ / TRASH RACK DETAIL it \ ~ ~ ~f l! ~ 7 ~ \
c 17" ~ ~ , N.T.S. ~ r
L . J % ~ a, , / ~ i If ~ ~ \ ~ . V
/ m ; 3 ~4 REBAR N J ~ 1` ` t ~
v 12" O.C. EACH WAY 1/2" PREFORMED JOINT 4"x4"6 6 WELDED WIRE ~ ` ~ 1J..1 ~ ~ i ~
3 " / j v+ FILLER, 12 WIDE FABRIC EACH SIDE &
C TOP ~ , - / , f ~ { ~ y -
~ ~6 REBAR PERIMETER c , , , 4" DIP / r f _ ~ \ ( eo°a°oeoo°a°ao°°e ~ ` ~ . ~ o,,a° CARP °°e
FRAME (0 x0 x0) •~C
o j / ' ~ , 3000 PSI CONCRETE ~
~ ~ ~ . w ~ f i
l ~ ~ o e SEA L \ _ _ _ e 184 8
~ ~ \ ~ d 2000 PSF MIN.. ~ / ? ~ ~ ~ a ~~1ti~<~NG i NF.~ o°,~~v~o° ` ` ~ ~ ~ ~ / ~ \ \ eeee'Y ~'+°„°pooaoa° `Cj oao~
q PA TTY L VATI N 8" i ' m BEARING CA C ~ ; ' ? . " ~ ~ rc""' ,..e' ~ \ ~ eQeBpQaooooo nae®o
o BENEATH COLLAR SECTI N SEE BMP SECTION FOR SIZING DATA ~ \
o ~t 19.3' X 19.5' PLUNGE POOL
4 DRAIN TRASH GUARD DETAIL sEE DETAIL sHT sw-5 m TYPICAL ANTI-SEEP COLLAR WET DETENTIQN POND GRADING PLAN ~I~
o - .,T~ n 1' = 24'
5 N:1.5. iv. .a Z4\
e U 0
f 1
No. Revision Date JJKLJ Designer Scale G I PER TOC REVIEW COMMENTS 04/10/08 xW SEE SHEET
i 2 PER TOC REVIEW COMMENTS 05/08/08 Drawn By Date
TRYON VILLAGE TOWNHOMES STORMWATER MA 0 3 AS PER DWa REVIEW 6/20/08 KW 03/12 2008 Z MANAGEMENT DETAILS WITHERS RAVENEL Sheet No. SW 4 ENGINEERS I PLANNERS I SURVEYORS
0 4 AS PER DWa REVIEW 06/27/08 Checked By Job No. 111 MacKenan Drive Cary, North Carolina 27511 tel: [phone] fax: [phone] www.withersravenef.com
xw 020801 M-00 Ca Wake County North Carolina
Y

/ % ~ ~ / LEVEL SPREADER LIP ELEVATION=
/ f 4"-6" HIGHER EXISTING SLOPE ON DOWNSTREAM SIDE
~ % ~ f % i ~ / % r / / ~ h /
5EE PLAN FOR LEVEL SPREADER LENGTH
/ ~ ~l / ~ / / / /
/ r r • e r , • + ~ o / i / / / % 0.00 SLOPE ON TOP OF GUTTER {FLAT SLOPE)
I ~ / % / ~ r ~ ~ ~ aT EL 426.5 .
i / ~ ~ w r ~ r s r, r t o ~ I / 24" CURB & GUTTER (3,000
I l / f ~ / • / PSI MIN COMPRESSNE
~ ~ ! / ~ f % .f F ~ / ~ / ~ i ~ / 1/ STRENGTH)
~ W DS / / i r r i / i r? DIFFUSED FLOW
t ~ THROUGH BUFFER
1 / % / / % PIPE FROM BYPASS STRUCTURE 6' MIN. ~
~ ~ ~ / / i % I
/ / r r r • r a / ~ / 1' DEEP
! . J / / / / ~ ~ j/ l / / y ENSTALL CLASS B RIP
/ / % RAP FROM OUTLET TO COMPACTED
0 ~ / i 1 ~C~ I ~ T F ARY / / 30 OWN /0 C ~ BOTTOM LEVEL SPREADER SUBGRADE WITH GEQTEXTILE LINER
~ i ~ ~ / r r f uT ITY BASEMENT
~ ~ / • ~ z
fl/ ~ X57 WASHED STQNE - 4" THICK {MIN)
. ~ j i / / / ~ / / / ~ ? / / i / PERMANENT GEOTEXTILE
l / r ~ ~ / % x UNDERLINER
/ ~ 1 ~ ! , f/ / ~ NOTE;
a~~ wo o~N u~cEr~T10~ Cave / ~ ~ r ~ r / ~ , ~ ~ ~ it tEYEL SPREADER SHALL 9E INSTALLED WHEN THE DRAINAGE AREA 70 THE WET POND HAS
~ 28 LEVEk / ~ BEEN STABILIZED.. 1
f ~ , / SPREADER i / % ~ i
~ ~ ~ ~ / f
/ / ~r' / / ! {0/ ~ 'ti / ~ /
~ l ' I ~ af` / / / ~ 0 / / LEVEL SPREADER DETAIL
D~j ~ / /
/ / / / / ~ / / / i / a / / /
f M /
~ ! ~
f ~ p/ ~ % ~ ~ / ,A~/ f 6 GRASS STRIP 1 ,r / ~ / ~
/ ~ / l 1 ~ i 4
/ ~ r i i ~ % / / cy / /
~ / / EX SSMH I ~ / 1 1
/ / RIM EL 424.72,E / , ~ r / / ~ /
~ ~ ! ~ / / / ~ / 1 i t
~ r 1 / ~ / N 1
/ ~ r / 1 1
/ / / ~ t 1
PROPOSED TOWN OF C Y' ~ , / WATER MANAGEM , / ~ s/ r
CONS RVATION EASE N;F '7'• / / , EASEMENT ! ~ RIPRAP LINED PLUNGE POOL FOR CANTILEVER OUTLET
~ ~ 1. C~ / "I ! ~ Reference Design Nofe No. 6 {second Edition), Jan. 23,1986
NWA ~ ~ I + / ~ / ~ ~ GRE ~
POS ~ ~ _ _ ~ , ~ _ -
~ PRO ~ ~ - ~
.il / , ~ Elev. 428.fl ~ Elev.
/ ! % TQ ` ` ~ 19.3' X 19.5' PLUNGE POOL I a2~.5 Elev.
A ~ 2.2 425.6
/a Nr 2 ~ PROPOSED T N OF CARY BANS • / Q 1T1 ~ 1.1 1 1
~ ~ CONSERVATI N EASEMENT eU~F ! ~ I 3.0 3.0
a r ~ i i ~ 2.1
/ r ~ r i i as 4.2 ~ 15.2
~ / i f, /
SECTION A-A
19.9
5.9
1.0 -~ry~ 1
3.fl I 2,D
W 2 N 2.4 SECTION S-B
w Z A A
W Y
~ PIPE B
a LD. rn
0 a 3 VASES LD.
a m A A
c° N
h N
m c
PLAN VIEW tlx: ROCK G ROCK GRADATION
~ t. L a THE LENGTH DF THE RiPRAP APRON. ~a k °Yo Passim °Y° Passing Size (in) B
I 2. d = 1,5 TIMES THE AIA%IAIl1M 5TONE DUIMETER BUT NOT 100 ~ LESS THAN 6' (inches). $0.85 100 24 Tr~ron Village Townhames
n 60.85 18 LANDOWNER
3. A F1tTER BLANKET OR FILTER FA9RIC SHOULD BE 25.50 .p L INSTALLED BETIVEEN THE RIPRAP AND SO1L FOUNDATION. 5.20 25.50 12 5-20 6 DESIGNER: KLJ
o PIPE i)•5 m 0.5 2.a SHEET Of
O O 0
6 N d
eee'cae®~o~aaeejQA
flLTER FA6RIC 8 4~N
C SECTION'A-A' o_
a C
° DE'£A.IIJ Na. E ° SEAL A ° i S g
n P1PE OUTLET TO FLAT AREA N LL- CHANNEL 04fl0A.20 o
~ EFFECTNE:D7/O1104 0 ~ DEFINED ter, m °°o ~.y~°FNGIwE'E~~~a°° °.,,®yFr°en°°~~g
ea k L. 3 oa°
0 N °epaea e1eoeee
J a
U m
m E C s
c , f 0
r m m
r
t
Date B Designer Scale No. Revision Sheet No.
1 AS PER DWO REVIEW COMMENTS 6/20108 KU W&R 1 = 10 WITHERS RAVENEL S
o AS PER DWO REVIEW COMMENTS O6 27 08 KLJ Drawn By Date TRYON VILLAGE TOWNHOMES S KW 06 13 08 LEVEL SPREAD[ ?EADER AND DETAILS 10 ENGINEERS I PLANNERS I SURVEYORS W-5
m Checked B ob No. o By 1
' Ca Wake County North Carolina KU 02080134.0 111 MacKenan Drive Cary, North Carolina 27511 tel: [phone] fax: [phone] www.withersravenel.com
i