20071671 Ver 2_More Info Received_20071121

~ Kimley-Horn
~ and Associates, Inc,
November 21, 2007
Ms. Cyndi Karoly, Supervisor
NCDENR
Division of Water Quality
2321 Crabtree Boulevard, Suite 250
Raleigh, NC 27604
Subject: DWQ Project #07-1671, Ver. 2
Wake County
Wal-Mart Store 4484-00, Raleigh Tri-Mall Site, Raleigh, NC
Ut to Perry Creek [030402, 27-25-2, C, NSW]
Dear Ms. Karoly:
On behalf of our client, Wal-Mart Stores East, L.P., we are writing in response to your
comments regarding the subject project. Your comment and our response is noted below:
1. Please provide an updated location map for the site.
Updated maps have been included.
2. Please provide cross section details showing the provisions for aquatic life passage.
A cross section has been provided showing that the proposed extensions will
match the grade of the existing pipe, and therefore allow aquatic life passage.
Please re-submit level spreader plans that show the bypass structure outside of the
level spreader, and citing o the level spreader on a slope of 6 percent or less.
Additionally, please label the level spreader detail per the current DWQ guidance.
Level spreader plans have been revised to show spot elevations on the level
spreader. Additionally, revised calculations and level spreader worksheets have
been included. A detail sheet has been added to include a detail of the level
spreaders and the bypass structures.
^
Suite 300
4651 Charlotte Park Drive
Charlotte, North Carolina
28217
Should you have any further questions, please feel free to contact me at 7 -654-
5907. p ~(~([~,~
Sincerely yours, L~ (,[
KIMLEY-HORN AND ASSOCIATES, INC.
%7::W~ . WAT~FI QLiAUTY
NJi;i`IAND~.~up 5T(X?!yl4N~1'ER 3RAAlCH
,.
Austin L. Watts, P.E.
Project Manager
P:\015476 Wal-Mart SiteCivil\050 Triangle Town Center\Correspond\L.071114DENRW.ALW.doc
Attachments
o~ ic7i ~z
^
TEL [phone]
FAX [phone]

U` Crisp Dr
o a
a \a ~ r y`
a ~~ 1 ~O,ak • oro-' ~
r ~ ~ `~~~ d~ I iu`
o~ ~~
/
a~ %'
Q- ~
~
~.

0
~Si .l f a
on ~~ ~ ~ I(II
~ egafe~,~ Ceya~ ~ ~J
Thornton Rd
Or o~'~ ~ ,
r
n
I
`
/
~
~~°~~-~~
~~~~ m ~ j4~a
.
~
r ~\R.
Thorpshire Dr °+,
,S, ~o~,. Midnight-L-n
d~ N
s, O„
~ ./
o ~'~%QQ. ~ ~V~ A~t
o ~ ~
m<aa~ m ~resharnt akF
_ , ~ ~C~ ~„ Mitchell-Mill Rd
~
d \
f ~n~~rs e Reba ~t ~ , `~,^P ~9
~
a ~ ~ba
~
~
~
a ~
a
a° ~
~~
a~
5
o
~
,rr~
~ O`
'~~'W~e:ybridge D~ c" ~
o
`ti
y~~ a
a
~ ~ Ch U
'
`er
~
!
~ co e
_ ~ -:'
/ o-~n _o ~p~~
~
\
a~•a
r
~
~,
~
/
`
o\
Dr
^c ~ ~ ~~' ';.
~ Dun
~~
c 1 ~m
~ ~ O
v, -o > ~ ~
Q
J
~ Hickory-Rd• o
`
~, me o
y ~ .purr-iJn•. g-€orest R
o ,
~
'
~
T ~r
~
v
_ U rho p ~ Y
~ ~ ~ ~r ~Millbrook=Rd R
r~~ ~ 1•- ~ =/~o• 401 B.~/
E ai ;c°`J ~ Galvar:Y p ~°'c Z
a~
O r 2 -a m
a~-~
\
sum ~~o ~ ~ ~° `0
r ~ (~~ ~~ ~ y ~ y
;v`RI ~~ ~~„` a ~ ` ~ ~ ~G tim _~ a
a enatq-- 11 ~ ~ ~~ ~~a~ v
Dr
~ •
p
~ ~~ `°
~ m
~' o<~
~
L-ee-Rd ~ N
~ o'
~
~
_~
-g a, v
o -om
e per
~: ~~ •~ ue-E-Ileri D ~`~
fin
~
~
/
~ v~
m ~,
Legend O 1 ~' Jane-L-n- o_~
a m Donna-I~d ~ U . dington Ln 4 00O~sf 8,00
2949 4 UU ~y
~
~ Site Boundary o B
tl
B
~
u
er-
lvd
Starmount-Dr eet
Title Location Map
Project Wal-Mart Store 4484-00, Raleigh Tri-Mall Site. Raleigh, NC
Prepared Fnr. Wake County, North Carolina
Date Project Number Figure
1 l /9/07 I ~
P~.~015476 Wal-Marl SiteCivil\050 Triangle Town Cznter\flnvironmental\Figures\Figures.doc Gin i""io`~., ~R

_ M~..' .. ~ ~ H} ! .,. ~ r ~ .4 1 ik :. ie'~ ~ a'~'.' r3wb~ ,~. M':+VR~' 7`1~`~~ s% '- a +~,~ ~R
' +.M 'l. t'v .~ ~ ~ R",1 l.. a~ 4~y P ~ a l ~'~~ ~W~' T:,µ . I
"'
V
~
i
~ ~ ~a`:yl
i°i. C .~,'a ~!!~ )' ra 2S' 4 il'. k ~. ~x.V yJ1~~~'' ' !
. 1 ~~
r ~ yv,-~~~y'' ~

.1~.. i ~ ~A'MlT~ F~', ~ u'C
~ t
y
r' _ .~; _ i ~, , . ~.~ ~ y ~wt~ ~~
a L a y :M 'e ,~~.r~ A~~
~'~. _ eX
. '3 4
4 •' ~ r ~ ~~ ~ 'S ~ . ~a
1
l
- ' ..A
l.
. t •....
.A
Z x i , ~ „,.
.:
~ ~ ~ " ry''~ ~ ~• ;~ it ~,~ .
r a ~ .:
t
w
b<
y
~t~~~t~ `.. ~,~ ~ fit'. ;~,~r ~ ;.; h F~q~.~ ~~ 'R~ ~ m' 1"''~. !Y.; ~ ., ,~..-
x~ ~ P:w i ~,r"z?j ter, ya~" ~~`t '' a; '` J t ~~ C ''7~ "`r,,r"t 1, `
~ r '~ t 5~ y,,,i -.~ ~°'~' k y..
~~`~ i, ^ ~, ° ,stir; s '..;a/' ~ 'x ~h ~l ~ 1
~
, ~
~
~
5
,
y }
~
r~~
'~
~~~'~ ,'
~y$,*; 8+:~r '' ~~~
~ ~a~G~nt:~ ~r 3\' ' ,~ -.+~"h1~ ..~. 'ti ,~t~ie' Atli'~Af~ F ~ w~ ~
4`
j
.~
~
1i ' e
~
)
\
'
'`
~
~
°
`w
_
.
~Y 1
a.'"' .
~ X'....~, ~
~ v^ ~ "'S's
Y
~
'
.:,~5 lS„ ~
~p
k4
~ a \ ,`1 . /y
~r1~'~ , w,
' 1:*
g~,~,. .t~ tyA ~, Y:~-wt^yl 1Wg~ ,~ ~~~$ t ,~ .1Y~~ R:1 ~' y.~~~\~! :\~~ ~ 1=~ ~ `'Y T, a' ^~.f 7.~` ~,~1'7
r }.,~~~~ P.,.._~.~4 i 3 .. - Ott ..~~ • T.
Ya f,~ 4 ~ !`}t4:v~. ~'-514 ~ ~ ~~,~+°~ h~ 't q~~~3~,.~,~
1
~
~
.
4 ~:~~ ~,~~
~' ~` :: f~A~-. lea.-:.' ~ _~+r~ ~ ~, ~,~ -.~;~eM~r e ~ i^, -
y iR.~'','
.~
~
ate
~ ~ ~ V t ~'P Y. \
w ~f~ 1
d ~
~
.
,
,~ 4 y'
'bc
t ~'w~.
Y~~~~~ ~
~ l~, ~~i~ ja~a~ 'y't7~ ~ 1. ~ hx ~.` .w ~ ~ r ~_.; ~4"+€ y ~'~ r, iC `A.Yy f+ ~ 1 '~+°+4 p~ '`¢~ i yJ`+:l
y?~` ~'~YG O! r 4St1 ""fa't-..' ~'
jai .~ ~ ~~ ~-t t~ rh , t +~~ ~'•` ~~ ~gfi tF +~~ -'Y f i~~ ;t -.f
W'
v
,
v~~l
x
, a,~
~
w... ;
?
.,~:
,
. ~ R ~~ R `1 r
p S'
r t, ~ V .' q ~ j+C .~ rA a ~ f v1 A'd ~d~clr ~ i a
3 ,° PyrM
t . ti k - ah ~ r,,,
i ? s~
b r `' ~~ ~~r ~ ~~ S' ~» ' ~ '
x t
w''''~ k k ~ >r
e ; *
.t
~
r
.
,
i
.
~
)
.
4~ `y may, aa ~S A B tl. ~ G ~ ~ r ,~ ~ '.r ~ ,• >~~ - { ~, k ~F- * S n~,
1 ~ ~~ ri^f ~ ~~ ..~4 ~
iN~'~l
~~ 37+t ~
AS * ~
t ,Y ~ * ~ ~ 4
•
~
`
.
}
; T
h
.t
.
,'~
,~ ~' I ~g ti ° Y.>< ~` t~^ 1~ ~~1 _ry < y',' a f ~"p 1 ~ ~ •` S.. ~
~ w ~ ~ C M. ~a~. ~ jt'~', I ~
~~~
'Y' _. ~ y
aS }k"
~"`' ~
r ti i
.4
l -~
k L t `~
t i
t Ri w "
4~
1~
't
~\~ ~
~
r \
s
2
t
k
y
.y.
hl .
T a
' V
S.
~ t s
~
+rt '~ - "~,~a ~~ 4r Yx ~~rRF `~e~~~f ~`V~ ~: Cy~{~°~;A yd'.P ~ F ~::: ~`~ a '~A }...P' ~"w~ =.i x .'. 'l jn '~
~ ' ,~~yA t",}~ C 1~ L"{` -r '~y'~ r -- a i y w~ ' '% 1 j~ t~+.'~ 1,~Sey ~y 'pa•;
.d Y"4 }t;!`Y. ~ .tip y~ I } 3° i ~r. x!i -;1~ ~- Y @'1 ~. ..~ li - ;~? ~y ~4 "/
i ~S ~ ~ fi~ .Y ~ y J^w, (Td ~, ~~ y~ ~~• r r Y.Li ~ _-\I ~l 'f T Si '~_ 3r ° 1~1 ~ r~h Y~`ii ~ f
r ~ P ~ .,~ Y i ~ .,, ~ S ~,~. .'44~.' r+lA1. - hj/~Ywr ~ f•' I' ~, is t _ , k _A R ~ ~y1 y'~+~Fy ~ ,..
t,¢ i°~µ~~ ~ $r9i~ : i~~ AY ~ l '~ . a' ~ ~.~ ,pi, ~. -' ~a~ ,T 'u-'~ a •• ax ^ ~~w4s~..~;Y~i~~ ~~~.1-fit ~P~p "~I,~S^"'1j .
E .r;.~rt ~ y ~ `p"~~~3,; ~ ~ 1 / k i } °~ ~ N'~'.i r7f.. +} ~y ~ ti ~T 9=,~ ~ .~ ~' ~-:5 4
r w i*,s,t$ a~. ~'# r *. '4 '~-"#~~' _ 4 x C~v~ a "" .°P7 a+~ 4 a ~"L ~'?X l~ ~:+!~ ti
r . - r F" .
,yw}4 >,~ , i t a
1 'r w ~ 3 l xy - ''7'.'„Y
[[[* ,f i f
~~
~
~
~
~
ro
~
~
~
p
4 \ .~ ~ r
A~Pi ~..: 'M ~1 6
` ~ .~ ~ a P~ r k`~1.` ~' c
C~~+ tip': al ~
A
~{, ~, ~'•
ma ~. P
3a sY '. 'Y[ Pi. 77 F .k Si
~ ~+' ~ P aEi~ ! kY ~i FS xa. ~1 . ~ w 1 :. ~, ry^ ~. "A 7''Y ~ ~! ^ .a ~ ~ *~ {91.°r~1F p
t~ I rirf
{
p
}
~
~ }=art
~
'
~. ~
~ ~
4
~
~
'
ro

- - OId Va/ake Forest Rd ~ -
~F ,~.~ i `~ ~~~, ~*
j
.
a
=
j
~
yt; c. ~r ,K
~+
~ ~ ~~r
~
Legend G M' ~ ., w '+~ , ~r.
~ ~ ~

~-
iM~4
Site Boundary "~F'~7~~ _ L
, -
"; '*`
,
,
w
Streams ~ s'~ ;~`,~°',~r '~, ~ ~ ,,,-,: !
-_
-1Y1 -ii" _ _. z ''
i
T-
i
d '~
_
r
d
r
~
~ ~,S";
® Wetland - K~ - - ~' ~'~ ~ ~ ~t=~,~ ~~ .."~ ~~ ~~~I
~~ ~'g.
'~ ~ A
. ~`' ~~
a
~ °`
~L
~
yyR~
-
Neuse Buffer ~
~
a
}.J .r ~ , ~ ~s 4Y- .,.'k~."
Zone
F
~
Y
a..
• i
4s .
fS~ w r
..':,f
P
1
1,000
2 ~,~r ;1 J 1
Feet
Title Aerial Photo (?004)
Project Wal-Mart Store 4484-00, Raleigh Tri-Mall Site, Raleigh, NC
Prepared Far: Wake County, North Carolina
Date Project Number Figure
1 1 /9/07 4
P:\01547fi Wel-Mart SileCivil\050 Triangle Town Cenler\Environmental\Figures~Figures.doc ~~~ mwsrc~.m.irc

- «
..
a

.'

i
.y

e w ~
ii_. _ + ~
1 ~ .~ ,. i ., ~.~ ~ ~ F _ ~ wyTK

:~

}...
-

~
~L
'A
V
~ ~ c ~

~~ ^ q

~ ~~ '
~
..'~II

. +
~„ ~ k ~ ~ fi-~

i
.
} '
~ r `'~ ~
^ + fit"

~ ~
k ~' y t _
'~ ~. ~
i~~ r
Y ~ ~

„-

-
i

,.
.,,
'. A ~ ~ ~ ~. ry
~~ l -
s .
i r • M
~
~ ~ ~
• ~ ~
~
~9 ~
3 ~'s. ~I
~

~ fix. _~ r.
~rr ,~ "~ "
~.
•
~ ~m ..
n ~ ~
~ k` ~ h~
-~
y
•
~
~..
- ,. - .r

Y ,~.

z
~ . 9 ".
yrl far
F

., g~

~ s

i .w - <
V
t ~~~
- ,
v 41R ;'
~
a
~/'.~_
~

:mss ~ ~ ' a. " rt
e
.
~~ _ ~~ ,
~~
_ _
~'e
a. -
9
:
6 • OI~J-Wake-Forest-R el
~ Y et0
/I

.. ~
'
. ~ w
~O
."

~' Y i
C~ 1: ~ . N
- - N ~
In
s

s
A
M ~
r

,
~ ..-
,,+1 ~ ~? W~~ 9'~ ~1 _ ~ y
`~,
G
Dunn~D~r
.~
Legend ~ ~ ~ , ~ -
Site Boundary 8 ~ 'a- ~ `•~' o. F ,~- ~ ~ ' ,
i Feet
' ~ ~°jj
Title USDA Soils Survey
Project Wal-Mart Store 4484-00, Raleigh Tri-Mall Site, Raleigh, NC
Prepared For: Wake County, North Carolina
Date Project lYumber Figure
1 1 /9/07 3
Pd015476 Wnl-Marl SiteCivil\0511 Triangle Town Center\Environmental\Figures\Figures.doc [~~ „e~.,iR

.

t
.
-- -
e ~_. ,
/ 1, - ~ "~ mQ~ (G'~ -o -- J _, ~IU
~,~ r ~~~ ~ ~ ~ ~~ ..3• y ~ y
~,
~
,
~
r
,
t
Z .~.-`~ ~\ ~, ~ ~ r~ ~ _ ~~ ~ . ac4uellne-Ln-~~ r . o, `~,i~ ~ . V ~
^ -- -
~~ ~ aQ~ .__ ~ ~ _ - Mimetre'e~Ct _ _
m ,~
~I
• r'
r.
~
/
y
~.... r`
l~ T
~ - - wry.
i'
!~
~r -
., _ _ - -
~,.,ty,.~t~ • r
;'; ~ly J ,~ ~_

f "~ 1f
1 F~ f~~ ~ iJ ~ i1 - ~~. 1 j ~~ F ~ r~l
I ~' ~~ ,
L
_
1 ~ J ' . '~ ~ ~~, y

~'
1, tom. ~ ~ ~
.,,_-.'-,. ~~~_..~; ,r' _ 1 ~"~ ~`99~ o , ~a0. ~ r
`
'
em
. ' ~j ~ ' y - ~ IdWVak~For s ~Rrd
~
,
~~~I
,
.
f
.
~ -
_
,.~.~
\ _
~ elo`~'
--'
-.~

+~,~ ~ r ~~~ a~.~-• * ~~ Dunn-Dr~ ~ t.'~ ~r 0~~. ~ ~ ~~I
'
,
r-
" ~,1 ~ ~:'li 1 SQ • ,' ~ /Bur-Trl
ir. Mel Yille-Rd~ ~ ~ t Y
~ ~ f
, ~ C, r ~~
• l f -

;r t r0~
pJ
~
--
'
'1 ~ ~ !
+
.r
'
~~ ,
LL •
r ~ .r
ry~
~
/~
~1
1
-jr
~
_
~~r _. - _
• ~ tf r _ • .,~,, ~ • • ddb
Legend ~ .- ,_ J
~ "~ J 0 Z. v ti;~
; • .4 ~ .. ,~ `~, ~, 1 ~ 1
~ Site Boundary ~ _ .. , ~ `
`~
-'
L
,
~ , Maide~a Ipr•Img Dr i • ~ •
Feet
-
r ; y~Be
Title USGS Quad Map (Raleigh East 1987)

Prepared For: Project Wal-Mart Store 4484-00, Raleigh Tri-Mall Site, Raleigh, NC
Wake County, North Carolina
Date Project Number Figure
11 /9/07 2
P:\01547fi Wal-Mart SiteCivil\(150 Triangle Town Cenler\Environmen4lf~Figures\Fibvresdoc Gin aaa~m

TRIANGLE TOWN BOULEVARD
EDGE OF PAVEMENT PAVEMENT MARKING EDGELINE
BACK OF CURB EDGE OF PAVEMENT (2' FROM

' PROPOSED BASELINE STA. 20+78. 5 EDGELINE)
FACE OF GUARDRAIL (16.5 PROFILE STA. 1+01.66
FROM BACK OF CURB)

PIVOT POINT (3' FROM FACE FACE OF GUARDRAIL (13' FROM
EDGELINE)
OF GUARDRAIL)
PIVOT POINT (16' FROM
EDGELINE)

260

255 ~-w----
,

SITE
~;~~ ..
.... a ,,, ., ,..~ ,,, ..u~
250

245

240 - ~°
....,,..
i v _. _ ._ _ .._ _. _..~ _...._ ..... _... ®...._ _...~

235 _ -.. ®. _.... ~ ._
~ -

230 3~ •++- .... i
~ -+~- •
,
225

220

0+00 0+25 0+50 0+75 1+00 1+25 1+50 1+75 2+00
PROPOSED PIPE EXISTING PIPE PROPOSED PIPE
EXTENSION. PROPOSED CURRENTLY BURIED EXTENSION. PROPOSED
INVERT TO MATCH APPROXIMATELY 6"-8" INVERT TO MATCH
EXISTING PIPE INVERT TO EXISTING PIPE INVERT
PROVIDE FOR AQUAl1C TO PROVIDE FOR
LIFE PASSAGE AQUATIC LIFE PASSAGE
EGEND
°°~° °w°-°- EXISTING GROUND
- - - - EXISTING PIPE (CURRENTLY BURIED t6"-8")
EXISTING STREAM
°°~°-°°-°°°~°° PROPOSED GROUND (2:1 MAX)
PROPOSED PIPE EXTENSION (f20' LT, f15' RT)
GRAPHIC SCALE
20 0 10 20 40
( IN FEET' )
1 inch = 20 ft

07-1671, Ver. 2
DWQ Project No.
DIVISION OF WATER QUALITY -LEVEL SPREADER WORKSHEET
I. PROJECT INFORMATION (please complete the following information):
Project Name: wal-Mart Supercenter Store No. 4484-00
Contact Person: Austin watts, P.E. Phone Number: [phone]
Level Spreader ID: _
Level Spreader Length
Drainage Area
Impervious Area
Maximum Filter Strip/Buffer Slope
grass
Max. Discharge from a 10 Year Storm
Max. Discharge to Level Spreader
Filter Strip/Buffer Vegetation
Pre-treatment or Bypass Method
II. REQUIRED ITEMS CHECKLIST
Level Spreader 1
17 ft
11.46 ac.
9.60 ac.
not required %
(perpendicular to flow)
(on-site and off-site drainage to the level spreader)
(on-site and off-site drainage to the level spreader)
(6% for forested, leaf littler cover, 8% for thick ground cover)*
o • 17 cfs
o .17 cfs
not required (thick ground cover or grass, canopied forest with leaf litter
groundcover)
Flow to LS 1 will flow from an extended detention wetland. Anything
over the first 1 inch storm event will be bypassed.
Initial in the space provided to indicate the following design requirements have been met and supporting documentation is attached. If a
requirement has not been met, attach an explanation of why. At a minimum, a complete stormwater management plan submittal includes
a worksheet for each BMP, design calculations, plans and specifications showing all BMPs and outlet structure details, a detailed
drainage plan and a fully executed operation and maintenance agreement. An incomplete submittal package will result in a request for
additional information and will substantially delay final review and approval of the project.
A licants iti s
Level spreader is at least 13 ft. per cfs for thick ground cover or grass or 100 ft per cfs in canopied forest with leaf
litter.
N~ Pre-Form Scour Holes are on flat slopes only
No structures are located in protected buffers*
If bypass method specified in the Draft Level Spreader Design Option Document:
Bypass method is specified (if applicable) and plan details and calculations are provided
Discharge to level spreader and subsequent filter strip is hydraulically and spatially separate from the bypass
!~ discharge.
No structures are located in protected buffers.
_ Plan details for the bypass and outlets are provided.
The operation and maintenance agreement includes annual erosion and vegetation repair.
The operation and maintenance agreement signed and notarized by the responsible party is provided.
* Level spreaders in series can be used on slopes of up to 15% in forested areas with leaf littler cover or on slopes of up to 25% in areas
with thick ground cover or grass if designed according to the Draft Level Spreader Design Option Document. This potentially requires a
minor variance in protected buffer areas. In any event the second level spreader cannot be located in Zone 1 of a protected buffer area.

07-1671, Ver. 2
DWQ Project No.
DIVISION OF WATER QUALITY -LEVEL SPREADER WORKSHEET
I. PROJECT INFORMATION (please complete the following information):
Project Name: wal-Mart Supercenter Store No. 4484-00
Contact Person: Austin watts, P.E. Phone Number: [phone]
Level Spreader ID: ,
Level Spreader Length
Drainage Area
Impervious Area
Maximum Filter Strip/Buffer Slope
grass
Max. Discharge from a 10 Year Storm
Max. Discharge to Level Spreader
Filter Strip/Buffer Vegetation
Pre-treatment or Bypass Method
II. REQUIRED ITEMS CHECKLIST
Level Spreader 2
is ft. (perpendicular to flow)
14 . oo ac. (on-site and off-site drainage to the level spreader)
10.3 s ac. (on-site and off-site drainage to the level spreader)
not required % (6% for forested, leaf littler cover, 8% for thick ground cover)*
o .14 cfs
o • 14 cfs
not required (thick ground cover or grass, canopied forest with leaf litter
groundcover)
Flow to LS 2 will flow from wet detention pond. Anything
over the first 1 inch storm event will be bypassed.
Initial in the space provided to indicate the following design requirements have been met and supporting documentation is attached. If a
requirement has not been met, attach an explanation of why. At a minimum, a complete stormwater management plan submittal includes
a worksheet for each BMP, design calculations, plans and specifications showing all BMPs and outlet structure details, a detailed
drainage plan and a fully executed operation and maintenance agreement. An incomplete submittal package will result in a request for
additional information and will substantially delay final review and approval of the project.
A lica,~//
Level spreader is at least 13 ft. per cfs for thick ground cover or grass or 100 ft per cfs in canopied forest with leaf
litter.
/1! Pre-Form Scour Holes are on flat slopes only
No structures are located in protected buffers'
If bypass method specified in the Draft Level Spreader Design Option Document:
/Y Bypass method is specified (if applicable) and plan details and calculations are provided
,~/ Discharge to level spreader and subsequent filter strip is hydraulically and spatially separate from the bypass
discharge.
~/ No structures are located in protected buffers.
Plan details for the bypass and outlets are provided.
The operation and maintenance agreement includes annual erosion and vegetation repair.
The operation and maintenance agreement signed and notarized by the responsible party is provided.
Level spreaders in series can be used on slopes of up to 15% in forested areas with leaf littler cover or on slopes of up to 25% in areas
with thick ground cover or grass if designed according to the Draft Level Spreader Design Option Document. This potentially requires a
minor variance in protected buffer areas. In any event the second level spreader cannot be located in Zone 1 of a protected buffer area.

Can Kimley-Hom
~ ._.. and Assodates, lnc.
LEVEL SPREADER #1
DESIGN SUMMARY
Project Information
Project Name: Wal-Mart #4484-00, Raleigh, NC
KHA Project #: 015476050
Designed by: JMH Date: 11/21/2007
Revised by: Date:
Revised by: Date:
Level Spreader Design
Fiow Rate (Max Flow from ICPR}
Intensity = 1 in/hr (DWQ Design Intensity)
Q (cfs) 0.17
Level Spreader Sizing
Downstream ground cover: Forest
Sizing criteria: 100 feet per cfs
L~ai~ = 17.00 ft '(Qt.lnmr x 13ft/Cfs)
Lmm = 13 ft
Lm~= 130 ft
Is L~I~ greater than Lmm? Yes
Is L~a,~ less than Lmax? Yes
Elevation of Level Spreader Lip 254.75 ft
Filter Strip Design
Level Spreader outlets to wetlands, therefore a filter strip is not required.

~~I~ Kimley-Hom
~ ~ .._..... and Associates. Iris.
LEVEL SPREADER #2
DESIGN SUMMARY
Project Information
Project Name: Wal-Mart #4484-00, Raleigh, NC
KHA Project #: 015476050
Designed by: JMH Date: 11/21/2007
Revised by: Date:
Revised by: Date:
Level Spreader Design
Flow Rate (Max Flow from ICPR)
Intensity = 1 in/hr (DWQ Design Intensity)
Q (cfs) 0.15
Level Spreader Sizing
Downstream ground cover:
Sizing criteria:
Lcatc
t,r,~n =
Lmax =
Is L~~o greater than Lm„,?
Is L~,o less than Lm~?
Forest
100 feet per cfs
15.00 ft '(Q,_;,m, x 13ft/cfs)
13 ft 'Therefore use 13'
130 ft
Yes
Yes
Elevation of Level Spreader Lip 253.75 ft
Filter Strip Design
Level Spreader outlets to wetlands, therefore a filter strip is not required.

POST-DEVELOPMENT ROUTING RESULTS: 1"/HR STORM EVENT
------------------------
___= Basins ------------ --------
-------------
--------
---------------------
-----------
-----
Name: DA-lA Node: Wetland 1 Status: Onsite
Group: BASE Type: SCS Unit Hydrograph
Unit Hydrograph: Uh484 Peaking Factor: 484.0
Rainfall File: Scsii-24 Storm Duration(hrs): 999.00
Rainfall Amount(in): 999.000 Time of Conc(min): 5.00
Area(ac): 11.460 Time Shift(hrs): 0.00
Curve Number: 92.00 Max Allowable Q(cfs): 999999.000
DCIA($): 0.00
------------------------
Name: DA-1B ------------- --------
Node: ---------------------
OUTFACE-1 -----------
Status: -----------------------
Onsite
Group: BASE Type: SCS Unit Hydrograph
Unit Hydrograph: Uh484 Peaking Factor: 484.0
Rainfall File: Scsii-24 Storm Duration(hrs): 999.00
Rainfall Amount(in): 999.000 Time of Conc(min): 5.00
Area(ac): 1.280 Time Shift(hrs): 0.00
Curve Number: 60.70 Max Allowable Q(cfs): 999999.000
DCIA($): 0.00
------------------------
Name: DA-2A ------------- --------
Node: --------------------
Wet Pond 2 ------------
Status: -----------------------
Onsite
Group: BASE Type: SCS Unit Hydrograph
Unit Hydrograph: Uh484 Peaking Factor: 484.0
Rainfall File: Scsii-24 Storm Duration(hrs): 999.00
Rainfall Amount(in): 999.000 Time of Conc(min): 5.00
Area(ac): 14.000 Time Shift(hrs): 0.00
Curve Number: 88.40 Max Allowable Q(cfs): 999999.000
DCIA($): 0.00
------------------------
Name: DA-2B ------------- --------
Node: --------------------
OUTFACE-2 ------------
Status: -----------------------
Onsite
Group: BASE Type: SCS Unit Hydrograph
Unit Hydrograph: Uh484 Peaking Factor: 484.0
Rainfall File: Scsii-24 Storm Duration(hrs): 999.00
Rainfall Amount(in): 999.000 Time of Conc(min): 5.00
Area(ac): 1.970 Time Shift(hrs): 0.00
Curve Number: 79.00 Max Allowable Q(cfs): 999999.000
DCIA($): 0.00
------------------------
___= Nodes =------------ -------------
------------- --------
-------- ---------------------
---------------- -----------
----------- -------------
Name: LS Box 1
Group: BASE
Type: Stage/Area
Stage(ft) Area(ac)
254.000 0.0037
255.000 0.0037
256.000 0.0037
257.000 0.0037
Base Flow(cfs): 0.000 Init Stage(ft): 254.000
Warn Stage(ft): 350.000
------------------------------------------------------------------------------------------
Name: LS Box 2 Base Flow(cfs): O.OOD Init Stage(ft): 253.500
Group: BASE Warn Stage(ft): 350.000
Type: Stage/Area
Stage(ft) Area(ac)
--------------- ---------------
253.500 0.0037
254.500 0.0037
255.500 0.0037
Interconnected Channel and Pond Routing Model (ICPR) ©2002 Streamline Technologies, Inc. Page 1 of 8

POST-DEVELOPMENT ROUTING RESULTS: 1"/HR STORM EVENT
256.500 0.0037
257.000 0.0037
------------------------------------------------------------------------------------------
Name: OUTFACE-1 Base Flow(cfs): 0.000 Init Stage(ft): 253.000
Group: BASE Warn Stage(ft): 999.000
Type: Time/Stage
Time(hrs) Stage(ft)
--------------- ---------------
0.00 253.000
999.00 253.000
------------------------------------------------------------------------------------------
Name: OUTFACE-2 Base Flow(cfs): 0.000 Init Stage(ft): 253.250
Group: BASE Warn Stage(ft): 999.000
Type: Time/Stage
Time(hrs) Stage(ft)
--------------- ---------------
0.00 253.250
999.00 253.250
-----------------------------
Name: Wet Pond 2
Group: BASE
Type: Stage/Area
Stage(ft) Area(ac)
----------------------------------------------------------
Base Flow(cfs): 0.000 Init Stage(ft): 260.000
Warn Stage(ft): 999.000
260.000 0.3881
261.000 0.4559
262.000 0.5250
263.000 0.5955
264.000 0.6674
265.000 0.7406
266.000 0.8151
------------------------------------------------------------------------------------------
Name: Wetland 1 Base Flow(cfs): 0.000 Init Stage(ft): 269.000
Group: BASE Warn Stage(ft): 999.000
Type: Stage/Area
Stage(ft) Area(ac)
269.000 0.4227
270.000 0.4601
271.000 0.4968
272.000 0.5368
273.000 0.5800
274.000 0.6226
275.000 0.6665
276.000 0.7117
----------------------
___= Cross Sections __ ---------------------------
____________________________________________________________________
Name: Group: BASE
Encroachment: No
Station(ft) Elevation(ft) Manning's N
--------------- --------------- ---------------
------------
___= Pipes =-----------------------------------------------------------------------
Name: By-Pass 1 From Node: LS Box 1 Length(ft): 21.00
Group: BASE To Node: OUTFACE-1 Count: 1
Friction Equation: Average Conveyance
UPSTREAM DOWNSTREAM Solution Algorithm: Automatic
Geometry: Circular Circular Flow: Both
Span(in): 24.00 24.00 Entrance Loss Coef: 0.50
Rise (in): 24.00 24.00 Exit Loss Coef: 0.00
Interconnected Channel and Pond Routing Model (ICPR) ©2002 Streamline Technologies, Inc. Page 2 of 8

POST-DEVELOPMENT ROUTING RESULTS: 1"/HR STORM EVENT
Invert(ft): 254.330 253.900
Manning's N: 0.013000 0.013000
Top Clip(in): 0.000 0.000
Bot Clip(in): 0.000 0.000
Upstream FHWA Inlet Edge Description:
Circular Concrete: Square edge w/ headwall
Downstream FHWA Inlet Edge Description:
Circular Concrete: Square edge w/ headwall
--------------------------
Name: By-Pass 2
Group: BASE
UPSTREAM
Geometry: Circular
Span(in): 24.00
Rise(in): 24.00
Invert(ft): 253.830
Manning's N: 0.013000
Top Clip(in): 0.000
Bot Clip(in): 0.000
--------------------
From Node: LS Box 2
To Node: OUTFACE-2
DOWNSTREAM
Circular
24.00
24.00
253.500
0.013000
0.000
0.000
Bend Loss Coef: 0.00
Outlet Ctrl Spec: Use do or tw
Inlet Ctrl Spec: Use do
Stabilizer Option: None
-------------------------------------------
Length(ft): 25.00
Count: 1
Friction Equation: Average Conveyance
Solution Algorithm: Automatic
Flow: Both
Entrance Loss Coef: 0.50
Exit Loss Coef: 0.00
Bend Loss Coef: 0.00
Outlet Ctrl Spec: Use do or tw
Inlet Ctrl Spec: Use do
Stabilizer Option: None
Upstream FHWA Inlet Edge Description:
Circular Concrete: Square edge w/ headwall
Downstream FHWA Inlet Edge Description:
Circular Concrete: Square edge w/ headwall
--------------
Name: ---------------
LevelSpreaderl ---------------------------
From Node: LS Box 1 --------------------
Length(ft): ------------------------
9.00
Group: BASE To Node: OUTFACE-1 Count: 1
Friction Equation: Average Conveyance
UPSTREAM DOWNSTREAM Solution Algorithm: Automatic
Geometry: Circular Circular Flow: Both
Span(in): 4.00 4.00 Entrance Loss Coef: 0.50
Rise(in): 4.00 4.00 Exit Loss Coef: 0.00
Invert(ft): 254.000 253.900 Bend Loss Coef: 0.00
Manning's N: 0.013000 0.013000 Outlet Ctrl Spec: Use do or tw
Top Clip(in): 0.000 0.000 Inlet Ctrl Spec: Use do
Bot Clip(in): 0.000 0.000 Stabilizer Option: None
Upstream FHWA Inlet Edge Description:
Circular Concrete: Square edge w/ headwall
Downstream FHWA Inlet Edge Description:
Circular Concrete: Square edge w/ headwall
--------------
Name: ---------------
LevelSpreaderl ---------------------------
From Node: LS Box 2 --------------------
Length(ft): ------------------------
5.00
Group: BASE To Node: OUTFACE-2 Count: 1
Friction Equation: Average Conveyance
UPSTREAM DOWNSTREAM Solution Algorithm: Automatic
Geometry: Circular Circular Flow: Positive
Span(in): 4.00 4.00 Entrance Loss Coef: 0.50
Rise(in): 4.00 4.00 Exit Loss Coef: 0.00
Invert(ft): 253.500 253.250 Bend Loss Coef: 0.00
Manning's N: 0.013000 0.013000 Outlet Ctrl Spec: Use do or tw
Top Clip(in): 0.000 0.000 Inlet Ctrl Spec: Use do
Bot Clip(in): 0.000 0.000 Stabilizer Option: None
Upstream FHWA Inlet Edge Description:
Circular Concrete: Square edge w/ headwall
Downstream FFIWA Inlet Edge Description:
Circular Concrete: Square edge w/ headwall
Interconnected Channel and Pond Routing Model (ICPR) ©2002 Streamline Technologies, Inc. Page 3 of 8

POST-DEVELOPMENT ROUTING RESULTS: 1"/HR STORM EVENT
___= Drop Structures _____
--------------------------
-------------------------- ___________________
-------------------
------------------- _______________________________
-------------------------------
------------------------------- ______
--------------
--------------
Name: CS-WET POND-2 From Node: Wet Pond 2 Length(ft): 100.00
Group: BASE To Node: LS Box 2 Count: 1
UPSTREAM DOWNSTREAM Friction Equation: Average Conveyance
Geometry: Circular Circular Solution Algorithm: Automatic
Span(in): 24.00 24.00 Flow: Both
Rise(in): 24.00 24.00 Entrance Loss Coef: 0.500
Invert(ft): 260.000 253.500 Exit Loss Coef: 0.500
Manning's N: 0.013000 0.013000 Outlet Ctrl Spec: Use do or tw
Top Clip(in): 0.000 0.000 Inlet Ctrl Spec: Use do
Bot Clip(in): 0.000 0.000 Solution Incs: 10
Upstream FHWA Inlet Edge Description:
Circular Concrete: Square edge w/ headwall
Downstream FHWA Inlet Edge Description:
Circular Concrete: Square edge w/ headwall
*** Weir 1 of 4 for Drop Structure CS-WET POND-2 ***
TABLE
Count: 1 Bottom Clip(in): 0.000
Type: Vertical: Mavis Top Clip(in): 0.000
Flow: Both Weir Disc Coef: 3.200
Geometry: Circular Orifice Disc Coef: 0.600
Span(in): 2.75 Invert(ft): 260.000
Rise(in): 2.75 Control Elev(ft): 260.000
*** Weir 2 of 4 for Drop Structure CS-WET POND-2 ***
TABLE
Count: 2 Bottom Clip(in): 0.000
Type: Vertical: Mavis Top Clip(in): 0.000
Flow: Both Weir Disc Coef: 3.200
Geometry: Rectangular Orifice Disc Coef: 0.600
Span(in): 36.00 Invert(ft): 261.750
Rise(in): 6.00 Control Elev(ft): 261.750
*** Weir 3 of 4 for Drop Structure CS-WET POND-2 ***
TABLE
Count: 2 Bottom Clip(in): 0.000
Type: Vertical: Mavis Top Clip(in): 0.000
Flow: Both Weir Disc Coef: 3.200
Geometry: Rectangular Orifice Disc Coef: 0.600
Span(in): 28.00 Invert(ft): 263.500
Rise(in): 6.00 Control Elev(ft): 263.500
*** Weir 4 of 4 for Drop Structure CS-WET POND-2 ***
TABLE
Count: 1 Bottom Clip(in): 0.000
Type: Horizontal Top Cliplin): 0.000
Flow: Both Weir Disc Coef: 3.200
Geometry: Rectangular Orifice Disc Coef: 0.600
Span(in): 60.00 Invert(ft): 264.500
Rise(in): 60.00 Control Elev(ft): 264.500
--------------
Name: -----------
CS-Wetland ----------------------------------------
-1 From Node: Wetland 1 -----------
Length(ft): ------------------------
85.00
Group: BASE To No de: LS Box 1 Count: 1
UPSTREAM DOWNSTREAM Friction Equation: Average Conveyance
Geometry: Circular Circular Solution Algorithm: Automatic
Span(in): 24.00 24.00 Flow: Both
Rise(in): 24.00 24.00 Entrance Loss Coef: 0.500
Invert(ft): 265.000 254.000 Exit Loss Coef: 0.500
Manning's N: 0.013000 0.013000 Outlet Ctrl Spec: Use do or tw
Top Clip(in): 0.000 0.000 Inlet Ctrl Spec: Use do
Bot Clip(in): 0.000 0.000 Sol ution Incs: 10
Upstream FHWA Znlet Edge Description:
Circular Concr ete: Square edge w/ headwall
Downstream FHWA Inlet Edg e Description:
Circular Concr ete: Square edge w/ headwall
Interconnected Channel and Pond Routing Model (ICPR) ©2002 Streamline Technologies, Inc. Page 4 of 8

POST-DEVELOPMENT ROUTING RESULTS: 1"/HR STORM EVENT
*** Weir 1 of 4 for Drop Structure CS-Wetland-1 ***
TABLE
Count: 1 Bottom Clip(in): 0.000
Type: Vertical: Mavis Top Clip(in): 0.000
Flow: Both Weir Disc Coef: 3.200
Geometry: Rectangular Orifice Disc Coef: 0.600
Span(in): 6.00 Invert(ft): 269.000
Rise(in): 1.00 Control Elev(ft): 269.000
*** Weir 2 of 4 for Drop Structure CS-Wetland-1 ***
TABLE
Count: 1 Bottom Clip(in): 0.000
Type: Vertical: Mavis Top Clip(in): 0.000
Flow: Both Weir Disc Coef: 3.200
Geometry: Rectangular Orifice Disc Coef: 0.600
Span(in): 30.00 Invert(ft): 270.750
Rise(in): 4.00 Control Elev(ft): 270.750
*** Weir 3 of 4 for Drop Structure CS-Wetland-1 ***
TABLE
Count: 1 Bottom Clip(in): 0.000
Type: Vertical: Mavis Top Clip(in): 0.000
Flow: Both Weir Disc Coef: 3.200
Geometry: Rectangular Orifice Disc Coef: 0.600
Span(in): 32.00 Invert(ft): 273.000
Rise(in): 4.00 Control Elev(ft): 273.000
*** Weir 4 of 4 for Drop Structure CS-Wetland-1 ***
TABLE
Count: 1 Bottom Clip(in): 0.000
Type: Horizontal Top Clip(in): 0.000
Flow: Both Weir Disc Coef: 3.200
Geometry: Rectangular Orifice Disc Coef: 0.600
Span(in): 36.00 Invert(ft): 274.500
Rise(in): 36.00 Control Elev(ft): 274.500
---------------------------------
--------------------------------- ------------
------------------------
___- Weirs =---------------------------------
Name: Wetland Spillwa From Node: Wetland 1
Group: BASE To Node: OUTFACE-1
Flow: Both Count: 1
Type: Vertical: Mavis Geometry: Trapezoidal
Bottom Width(ft): 55.00
Left Side Slope(h/v): 3.00
Right Side Slope(h/v): 3.00
Tnvert(ft): 274.500
Control Elevation(ft): 274.500
Struct Opening Dim(ft): 9999.00
TABLE
Bottom Clip(ft): 0.000
Top Clip(ft): 0.000
Weir Discharge Coef: 3.200
Orifice Discharge Coef: 0.600
------------------------------------------------------------------------------------------
___= Hydrology Simulations _______________________________________________________________
Name: 002YR 24 HR
Filename: P:\015476 WAL-MART SITECIVIL\050 TRIANGLE TOWN CENTER\CALCS\STORM\ICPR\002YR 24 HR.R32
Override Defaults: Yes
Storm Duration(hrs): 24.00
Rainfall File: Scsii-24
Rainfall Amount(in): 3.60
Time(hrs) Print Inc(min)
--------------- ---------------
30.000 5.00
----------------------------------------------------------------------------------------------------
Name: OlOYR 24 HR
Filename: P:\015476 WAL-MART SITECIVIL\050 TRIANGLE TOWN CENTER\CALCS\STORM\ICPR\OlOYR 24 HR.R32
Override Defaults: Yes
Interconnected Channel and Pond Routing Model (ICPR) ©2002 Streamline Technologies, Inc. Page 5 of 8

POST-DEVELOPMENT ROUTING RESULTS: 1"/HR STORM EVENT
Storm Duration(hrs): 24.00
Rainfall File: Scsii-24
Rainfall Amount(in): 5.38
Time(hrs) Print Inc(min)
--------------- ---------------
30.000 5.00
----------------------------------------------------------------------------------------------------
Name: OSOYR 24 HR
Filename: P:\015476 WAL-MART SITECIVIL\050 TRIANGLE TOWN CENTER\CALCS\STORM\ICPR\OSOYR 24 HR.R32
Override Defaults: Yes
Storm Duration(hrs): 24.00
Rainfall File: Scsii-24
Rainfall Amount(in): 7.30
Time(hrs) Print Inc(min)
--------------- ---------------
30.000 5.00
----------------------------------------------------------------------------------------------------
Name: 1 in/hr
Filename: P:\015476 Wal-Mart SiteCivil\050 Triangle Town Center\Calcs\Storm\ICPR\1 inhr.R32
Override Defaults: Yes
Storm Duration(hrs): 1.00
Rainfall File: Scsii-24
Rainfall Amount(in): 1.00
Time(hrs) Print Inc(min)
--------------- ---------------
30.000 5.00
----------------------------------------------------------------------------------------------------
Name: 1O0YR 24 HR
Filename: P:\015476 WAL-MART SITECIVIL\050 TRIANGLE TOWN CENTER\CALCS\STDRM\ICPR\1O0YR 24 HR.R32
Override Defaults: Yes
Storm Duration(hrs): 24.00
Rainfall File: Scsii-24
Rainfall Amount(in): 8.00
Time(hrs) Print Inc(min)
--------------- --------'---'--
30.000 5.00
----------------------------------------------------------------------------------------------------
Name: DRAWDOWN
Filename: P:\015476 WAL-MART SITECIVIL\050 TRIANGLE TOWN CENTER\CALCS\STORM\ICPR\DRAWDOWN.R32
Override Defaults: Yes
Storm Duration(hrs): 0.00
Rainfall File: Scsii-24
Rainfall Amount(in): 0.00
Time(hrs) Print Inc(min)
--------------- ---------------
120.000 5.00
------------------------------------------------------------------------------ -
___= Routing Simulations _________________________________________________________________
Name: O02Y024H Hydrology Sim: O02YR 24 HR
Filename: P:\015476 WAL-MART SITECIVIL\050 TRIANGLE TOWN CENTER\CALCS\STORM\ICPR\O02YO24H.132
Execute: No Restart: No Patch: No
Alternative: No
Max Delta Z(ft): 1.00
Time Step Optimizer: 10.000
Start Time(hrs): 0.000
Min Calc Time (sec): 0.5000
Boundary Stages:
Time(hrs) Print Inc(min)
11.000 60.000
14.000 5.000
30.000 60.000
Group Run
Delta Z Factor: 0.00500
End Time(hrs): 30.00
Max Calc Time sec): 60.0000
Boundary Flows:
Interconnected Channel and Pond Routing Model (ICPR) ©2002 Streamline Technologies, Inc. Page 6 of 8

POST-DEVELOPMENT ROUTING RESULTS: 1"/HR STORM EVENT
--------------- -----
BASE Yes
--------------------------------------------------------------------------------------------------
Name: O10Y024H Hydrology Sim: OlOYR 24 HR
Filename: P:\015476 WAL-MART SITECIVIL\050 TRIANGLE TOWN CENTER\CALCS\STORM\ICPR\O10Y024H.I32
Execute: No Restart: No Patch: No
Alternative: No
Max Delta Z(ft): 1.00
Time Step Optimizer: 10.000
Start Time(hrs): O.OOD
Min Calc Time(sec): 0.5000
Boundary Stages:
Delta Z Factor: 0.00500
End Time(hrs): 30.00
Max Calc Time(sec): 60.0000
Boundary Flows:
Time(hrs) Print Inc(min)
--------------- ---------------
11.000 60.000
14.000 5.000
30.000 60.000
Group Run
--------------- -----
BASE Yes
----------------------------------------------------------------------------------------------------
Name: 060Y024H Hydrology Sim: OSDYR 24 HR
Filename: P:\015476 WAL-MART SITECIVIL\050 TRIANGLE TOWN CENTER\CALCS\STORM\ICPR\OSOY024H.I32
Execute: No Restart: No Patch: No
Alternative: No
Max Delta Z(ft): 1.00 Delta Z Factor: 0.00500
Time Step Optimizer: 10.000
Start Time(hrs): 0.000 End Time(hrs): 30.00
Min Calc Time(sec): O.SODO Max Calc Time sec): 60.0000
Boundary Stages: Boundary Flows:
Time(hrs) Print Inc (min)
--------------- ---------------
11.000 30.000
14.000 5.000
30.000 30.000
Group Run
--------------- -----
BASE Yes
----------------------------------------------------------------------------------------------------
Name: 1 in/hr Hydrology Sim: 1 in/hr
Filename: P:\015476 Wal-Mart SiteCivil\050 Triangle Town Center\Calcs\Storm\ICPR\1 inhr.I32
Execute: Yes Restart: No Patch: No
Alternative: No
Max Delta Z(ft): 1.00 Delta Z Factor: 0.00500
Time Step Optimizer: 10.000
Start Time(hrs): 0.000 End Time(hrs): 30.00
Min Calc Time (sec): 0.5000 Max Calc Time (sec): 60.0000
Boundary Stages: Boundary Flows:
Time(hrs) Print Inc(min)
--------------- ---------------
11.000 30.000
15.000 30.000
30.000 30.000
Group Run
--------------- -----
BASE Yes
Name: 100Y024H Hydrology Sim: 100YR 24 HR
Filename: P:\015476 WAL-MART SITECIVIL\050 TRIANGLE TOWN CENTER\CALCS\STORM\ICPR\100Y024H.I32
Interconnected Channel and Pond Routing Model (ICPR) ©2002 Streamline Technologies, Inc. Page 7 of 8

POST-DEVELOPMENT ROUTING RESULTS: 1"/HR STORM EVENT
Execute: No Restart: No
Alternative: No
Max Delta Z(ft): 1.00
Time Step Optimizer: 10.000
Start Time(hrs): 0.000
Min Calc Time (sec): 0.5000
Boundary Stages:
Patch: No
Delta Z Factor: 0.00500
End Time(hrs): 30.00
Max Calc Time(sec): 60.0000
Boundary Flows:
Time(hrs) Print Inc(min)
--------------- ---------------
11.000 30.000
14.000 5.000
30.000 30.000
Group Run
--------------- -----
BASE Yes
----------------------------------------------------------------------------------------------------
Name: DRAWDOWN Hydrology Sim: DRAWDOWN
Filename: P:\015476 WAL-MART SITECIVIL\050 TRIANGLE TOWN CENTER\CALCS\STORM\ICPR\DRAWDOWN.I32
Execute: No Restart: No Patch: No
Alternative: No
Max Delta Z(ft): 1.00
Time Step Optimizer: 10.000
Start Time(hrs): 0.000
Min Calc Time (sec): 0.5000
Boundary Stages:
Time(hrs) Print Inc(min)
-
------
------------
11.000 --- ------
--
60.000
15.000 60.000
120.000 60.000
Group
------------ Run
--- -----
BASE Yes
Delta Z Factor: 0.00500
End Time(hrs): 120.00
Max Calc Time(sec): 6D.0000
Boundary Flows:
---------------------------------------------------------------------
___= Boundary Conditions _________________________________________________________________
Interconnected Channel and Pond Routing Model (ICPR) ©2002 Streamline Technologies, Inc. Page 8 of 8

POST-DEVELOPMENT ROUTING RESULTS: 1"/HR STORM EVENT
Max Time Max Warning Max Delta Max Surf Max Time Max Max Time Max
Name Group Simulation Stage Stage Stage Stage Area Inflow Inflow Outflow Outflow
hrs ft ft ft ft2 hrs cfs hrs cfs
Wet Pond 2 BASE 1 in/hr 1.15 260.660 999.000 0.0042 18854 0.58 18.555 1.15 0.145
Wetland 1 BASE 1 in/hr 1.15 269.759 999.000 0.0050 19699 0.58 23.522 1.15 0.170
e
Interconnected Channel and Pond Routing Model (ICPR) ©2002 Streamline Technologies, Inc. Page 1 of 1

017176 Value! 3NlCAA\070 Trknple Tew~ Crnlm\dp\WOIMO30-QAffiIO.bip Nowrb~ tl, E007 - 741on Hy' FelhV

m

~;
J
m pp
` y@
.53'
~
4
~
~
'~'
~i
.°.'
~'
'
p
f°
"
'
YS,'
1
V'
~
V
~ n N ~
F e
N a
~+
Q+
~^
f
Y
Y'
^+
"
P
'P
4'
T
V`
~
W
N
~
~
~F
p,
^'i
F
,R,'
;,^
P
Y
P
'A
W
^,
P
t^
Y
'r'
w
~

P
¢'
n
p+
t^
y~
y
~.,
r~i iB ~ fb ~B
t7 ~ i6 ~ ~' m om ~d ~ : i ~ ~ I~ .~ m n l: l~ > ~, ~ r: ni m c~ : ~ ~ c :>
n > c~ l> o c, t n :~n' a' iu, <: ~ c ~: ~ n I> I> o n I: o ~
~ ~i ~ ~' ~ ~ ~ m °~C

N o m ~ d
~ ~ ~ ~ ~ ~ m w ~ ~ ~ y v ~ ~ ~ ~ m ~ ~ m ~ a ~ ~ i
~ ~ ~ ~ _y ~ ~e
o ~ ~ S ~ ~ S 8 8 R ~ R ~ b 8 ~ S e

~, H ~ ~ M o ~' o N ~ "~ W N 9 o

~ ~
:
~ ,~
~
Z
:
~
~
m ~
'
~
'
' ~
~ R~ r $
~ 7)f
~ =J
m {~' C, is
~ F' £
L Ki }
,
' ~
~ $, h
' P $ ~,
~ O
i
i ~ ,.., Wh
' ~'
' ' }}~,~ ~ },/.,~
i
~
:
i 4~ ~ c ' !~ }'}
' ;. "' w n "
n ~
~ ro
I '~ wC~ Fhh3 n
n ' N
~ ~ ` ~~
~
~ W 8 8 ~ ~ bi 8 ~ 8 m T ~ }i tu ~ ~ri ~ ~ ~ ~ ml ~ fu ~ ~i ~i iri ~ t3 ~ ~u m ~ ~ii ,,
i4 ~ ~ ~ ~
(D OS tl~ ~ n
1P f
iLI fUi ~j ~y to ~ ~i M ~ V~ ~i ~ ~ e
~ o ~ ~ ~ !? ~ & ~ '~ Fn ~ R ~ ~
~ ~ ~ sS
~ g B ~ ~ ~ ~ U ~ ~ ~ ~ '~ ~ 8 , a ~ ~ & ~' ~ ~ '~ >n ~ X aJ 7 7i ~ ~ ol ~ ~ ~ 6 '~ ~ 7~ ~ ..- ~ o ~ ~ ~ ,
~~
~' ~ S ~ '~ `~ ~ 3 $ ."'. ~ k) 9 , g FR o ° ~ 8 k: ° o a, o ~ ~ ~, ~~ %R ~- o ;' ~ N $; I£ ffi r w' ~ o
v ~ ~ ~ ~ ~e ~ ss a ~ 'e 'a g o ~ a ~ e't N ~ ^: e ~ N " ~ ~ w ~ ~ ~ ti ~o
~5
9
~A
$

$, `o" w ~' o o 8 8 c o '6 « `d ~ 'o ~:' a `o a N ~" o 3 ~ ~' S ; 0 8 ~ ~, 0 o f o ~ w R o '-i ~ w"~ 8 '"O
c
a -+
~
~ -~
~
~
'~ ~
~ ~"
i ~
s &
d7 &
d! h^^
iu ~'
~ ~,
~ '~
~ 3
~ Q
~ ~'
~ 8
Q
tri ~
~ 'J
~ ~
~ N K
i ~
~ F9
~ ~
~ v &il
tll h8
~ #n~
lT ~n
'L &n
tli 7p{}~;~
(D #n
~D '-
a f3
~ ~
~ &
~ ~
~j ~
~ ~,
Q W
~ "
g '.~
~
m Qq'
r~{ ^'
~ -'
~ p
~'i ~
fu w
m ,o
m w
m q.
m ..
~ ~
uni ~
~ ~
(n ,
~ .
m „
fl Jh,
7D ~
m ~
g' w
m w
m "'
m ~n
m in
a n
m ~
m h
m

~ )

D
)
~

~° ~
L
~i ~ ~
~ ~
~ ~
o
~ ~
~
~ S~~
£_ ~
;
~ ~

~

~y
C
A $ ~
~ g
e

r
m
z
v
~ ~..
~ V
. ~ ~, ._~
,- ~ .... ~~ ~ 1gt 1gi 1
„~ ~ ~,tii f
B*
~ r
~ ~,.
r/ i I .... -~ ~ ~\
. .,.~ ,.
,,,.
~ ~~
~, 185, - .....,~ I -
~1 .7
Lny ,..,., \
s S~ 71TLE• PR0.ECT: Q1ENT: ... O ~
~~
7C
~ ~ ~ WAL,AMART • TRIANGLE WAL*MART s ~° ~~~~
N°~ ~
Q
~
~
~
~
PLACE PROMENADE
~ 9 ~ •
ti ;~ '
"Ap~:'~r = ~~
g~
~
' O ~ 4 STORES, INC. O ~ 3 _
~ t~ 4.4 y ~
~
_

O
(~
°
GRADING PLAN
STORE No.4484-00
SAM WALTON DEVELOPMENT COMPLEX
g; -{ ~
~~;` ~~
~
"
~
V O DD NE CORNER OF TRIANGLE TONM BOULEVARD 2001 SE 10TH STREET ~ ~ ~ : 9~5~ O ~
f
~ ^7 O
~
Of N
0 F' ~ ~ AND OLD WAKE FOREST ROAD BENTONVIILE, ARKANSAS 72718-0550 n m ' ~T~'••.
,
\
~.
~' •• ~i ,~ N ^
~
O 0
V ~ D D RALEIGH. WAKE COUNTY
NORTH CAROLINA TEL: [phone]
NO.
DATE
REVISIONS ~ ~ .,
~,,
.,~.. O
Y n

R\ml476 Val-Merl 9bOV.\WO TrMrplr Tam Curter\dpW17176W0-GRAONGAp
Morerier a, E007 - T32•n y, lw,.uvset•
&l'&i 7~~ ~ ~ ~ ~ ~ m ~ ~ ~ ~ B F ~ ~ 8 8 5 ~ ~ z T ~ ~ ~ ~ ~ 8 ~ ~ ~ ~ ~ ~ ~ ~ ~ 5 8 ~ ~ ~ 8 ~ 8 8 ~ 5 ~ ~ ~ ~ i 5 ~ 8 r ~ ~ ~ 9 8 ~ ~ 8 ~ ~ ~ ~ ~ m ~ m °
~ 3 ~ 8 3 ~ i f~ ~
~~ ~~;a ~ ze ~ ~ ~ ~ >~ >~ ~ w ~ >° 1, ~ ~ ~ ~ ~ w ~ ~ ~ ~ ~ ~ 'I; ~ ~ ~ ti '~ ~a ~ u ~ e' ~ ~ w ~ ~ y s >x s~ ~~ W ~ ~ ~ ~ ~ ~ ~ ~ , ~ w ~ ~ ~ ~ ~ ~ ~ ~ ~ ~a
~'F5 8~8 `8 'E !4 !4 3 '~ 8 E3 ~ W~ ~ 8 ffi b^ ~ " ~' >~ ~ 8 6 ~ b 8 8 :2 8 8 0.' S $ 5 8 8 8 ~' G tX 8 ~ >; >R 8 " 8 2i $ ~' ~ E' $ 'r - `~ ^ ~ ~ ~' '3 i~ L" ~, ~^ is £b 8 8 . a
~ ffi
° 8~ , Y" ,rn.~
' ~ ~ ~ &' S i 8 & ff ~ '," 8 ~
' ~ ~
' ~ =1 ~' 0l' ~ ~ ~ ~ > $ i ~ ~ ~ ~ ~ ~ ~ .~i, ffi i `~ 8 ~ ~ y ~31 o1 ~ „ ~ i $ ~' of d ; B ~ ~ ~ o m ~~ ~~ ~ ~ 7 ~ ~ 3 .~' ~ 3 ~' z~
N G b. F. `; ie" m ~
i a ~ o ~ '~ o c i'', `L; $'i ~' m ~i' u u°, ~ ."', u' u ~; °a k'i a u ;~ t4i N ~ ~ v 1 h ~°.i ~^ m m ~" d^ o u u a u4 c
~ ~ ~ ~ ^ t ~ ~ ~ m ~ ' 8 ~ ' ' R FA ~ 63 ~ 8 ~ ~ ~ ~ ~ m ~ ~ ~ m 8 ~ ' ~ ~ ~ ' 3 5i ~ ~ ~ ~ ~ ~ ~ ~ 51 ' F3 £~~' 8 8 ~ F3 ~ ~ ~ ~ ~ ~ ~ ~ ~ B B ~ ~ ~ ~ ' ~ in ~ ~ m &i ~ ~ ~ ~ ~ 8 ~ 8 9 ~ g ~ ~ g g &i ~~
~ ~ ~~ ~ ~ ~ ~, ~ ~ a ~ ~ ~ ~ x~ ~ ~ ~ x ~ ~ y ~ rn ~ ~ ~ a; x ~ a; ~ ~ ; ~ ~ ~ ~ ~ y o ~ x ~l ~i ~ . ~ '~ ~ ~ a~ x ~ ~ x ~ ~ N A N A ~; .~~, >p
~ o~
€ ~ a ~ € S w ~ ~ ~ ~ ~ ~ e~ s ~ ~ w ~,~ sI N ^ ~ . Ri o ' ~ ~ s S
~~ ~ r~

N ,

N ~ ~ s
,
v a
~

m
m

.,
m

.,
m

m o ~ ;~ >~ ~
a ~ $
,v s ~ ~ ~
~
~
„
o
W
'w
o

m
w

~ o ~ ~ o ~ ~

,s

,

ue

N ~ x o

~

o

~

..

~

o

v

~

e

,,

M

~

a

,

N

.
"_• 2~ ~ e a x a

,

N

w i ~~. r ~ N

~

~

N ~g

~ ~ ~ ~ m m ~ m m m m w m P ~ ~ ~ e e ~; ~ ~ tx ~ ~ m >s > e x x m ~ ~ ;~ ~ w W W m ~ ~ > x ~ a ~ ... m .. , ~ , ~ m ~ ro ~ N -m 2 ro ~ ,~ >
I
I
~ x ~ ~ ~ ~ ~ ~ ~ ~°~~
~
<9 g k '~ '-~ £t ~ b o 4J fS b 93 8 e5 R b >? >i iS fS b^ d £5 b :'. g b F3 d d lS =fi b X `d Y, S h b £~ k3 C ~' ~ d ffi LS~ ffi a :3~ -. '3 fl ~ a. Ei ~3 N'~ w £5 f5 >i E; & ~ m & ~' ~ Ns
'
$
'I
~ ~
m ~
3 ~
16
~ y
x ~'
x
~ pp
m 3'
o ~.
bi #n°
~' S^
~n
~ ~
i~ ~'
m R
~ >8
~ >b
~ <„
~ ~
~n ~^ ~
i ~
~ O
~ `h"
6b <3 ~
In'' °
~ ~F
}~ v
~ $
m ~
fn A
~i N
@ 1r3
~
~ "h~
d5 {h'
1~ F3
~i ~
~' l3
~ "
~ b
~
~ "
~ ^ht
iti _
~ ,
~' A
~' .
~ ~
m
~ ~~
~- ~
~v' -
~n --
~ hy
ai ..
m
~ ~
~n h~
of ;
fv ..
~i
~'
bi
~
I~
bi 4
~'
~
~
~ ~
fsf~i~p88, ale ° Q
8. ~ .. e e e e e e ~ e
w
~~~ -~~~~~~~v~
~~~~~ ~~ ~~~pe ~~
~~~~~~~e~~ ~
~ ~ a~~~~~~v~~ ~s
~ ~~-~~~~
~~~~~
~~~~

P. y g ^L
~ c-~~
~ a ';~:
~°

I s

?r'4
& k °~A
"yj 8 u S q~
~i
:' ~ D~

,~~
M id °1 a ri
xii

k
~ Yr~
a
3p
s
~
~ a ~
~~
a~
~~
~Z
m~
c
47 n
2~
DZ
Zp
OW
m
yZ
Dn
Z n
00
~~
~o
my
T (~
nm
~~
o=
yD
'• r
~~~~~~~~
~~~~ ~~
~ ~~ ~
~~~~ ~~~
"~~ ~~~
~ ~~
~ ~ >~. ~ ~
~~ ~
~~
~ ~~ ~~
~~a ~~ ~~
~~
~~$ m ~~ D ~~~ ~
3i ~
m ~ n
~ ~ ~~
3
~Z o~ m
O ~~~ p
~~~ ~m ~~
~ ~ ~~~
~ ~~
~ ~ ~~~
~ ~• ~_~
~~
'd Fi
w
s ~ m
as
~z x_
q (']
(n
® ~
a
r
c~
8
1
I

~

~

~

~
~
~
~
~
~

'~
~

~
~
°y
~ ~

~ m
m
o
g
P

m
\ ^`\\~\~\\\ ~ 6
~ \ <
~~V ~ ~ ~ ~~~~~ ~~~ ~ u
~~ ~a
~~ I
~ e
~~~ ~ ~a I ~~ ~ F
~. ~ ~_
~~ ~ ~~
~~~ ~ _
`~ ~ ~ µ~
~~~~ '~iq~ ~~ ~~~
~~ ~ ~ ~
y
_ , ~
~.
.~
,..
~~ ~a\
m ~/
g~~®
~~~
~~~

~' ~
~~ ~~
rr ~i
~~ f ~ ~
av;`.f::..o
~~ j ~ r7~
k~~~
~\ Y.:..
MATCHLINE: SEE SHEET C-06
~~
I ~ _
~ :. _,
SLz
~ n ~i `7
~~~ ~~
~/
~3 zB~\ '
?BZ \.
o.o
~z~ ~,/
~ ~ ~ ~ ~ n~ ~~IAL~IMART -TRIANGLE ~~ WAL*MART ~ ~ '~°c'~~ ~~~N° ~ e ~
~~~ °- ~ ^
^ m e PLACE PROMENADE p9 ~ _~; '•'"°~••:~~'% $
.~

'
~ m STORES, INC. (1 ~'
C ~ _
~
~ 2 ! 9"ts'
:
Sa
O
° 7
GRADING PLAN
STORE N0. 4484-00
SAM WALTON DEVELOPMENT COMPLE7(
y; -{
O n,()
~ O
H•~2 ~pj ~"
%r ~ ~
O N _
O NE CORNER OF TRIANGLE TOWN BOULEVARD
2007 SE 10TH STREET ~ (n ~
r. ~ 9 N
~% y •••
f ~:• O ; ^
V
Of
N DD
r ~
~
~
AND OLD WAKE FOREST ROAD
BENTONVILLE, ARKANSAS 72718-0550
~ ~ ••
'~ T~.S
~
p
^
3 7i
O O

V F y y
RALEIGH, WAKE COUNTY
NORTH CAROLINA TEL: [phone]

NO.

DATE

REVISIONS

O ,111„
'
~ ~

, ~ . _ ~~ ..

6' CONCRETE IFVEl SPREKKR
FlLER FARPoC k
7• urER a 1sT
BiPA55/ STONE PoP RAP
.~. ,
;v,:
naN +;,=:
~>< ,
Fww <';:
:'
IE1EL SPREADER UP
ROW PA
]' LA1TR 6 (7 STONE
Y NDE STRIP OF
ayo~ .!r ` W ~ 74'OJA~BI~ FlL1EA FA9tlC
/
`, ' = SECTION A-A
/fRa Parm °
~'.f
~
~ s
i!
A A
QVk+EL '•l.'.~ L tlVTF.B:
CUI® AND GUTTER) ' 1. LE1fL SPREAOFR MUSE ff CONSTRUCTED Oi CONCRETE
AND 4101wD ff 1-6' MI(NEA 1NAN EXISRNG CRWND
Lp'~;•~pp~yyJ OpE
INTO RIE SOL M17X IN
DO
II ~~
m 9ZED FOOiER
6, 211E UP 91ALL BE INSIIllID AT A o-605S GRI-E
LEVEL SPREADER D. YINIMUY IENIH .IY, YAlOMU4 tEN67N~V0'
NpF ip SCNE 4. All FLOW INTE97Y AS01£ 1'/r10.1R wLL BYPASS 1XE
LEYfl SPREADER TO A PoP RAP OLC9PA10R PAD.
i FORFBAYS MLL NOT ff USED WE TO FLOW CONING
FROM SfORYWATFR PONDS
LEVEL SPREADER SUMMARY TABLE
EVEL SPREAOE D1 (CFS) LENGTH CFTJ ELEVATION CFT -OWNSTREAM COVER
LS-1 0.17 V.0 1,1 C P FOREST
LS-2 0.115 I5.0 FOREST
^:^
Kimley-Hom
and Assoaates, Inc
«w wlwFmw Fxw wnc
~w m
nwwwlR NaN CWMI a®)
www: RNq m-Nw
rAe GNN wn-.w
©-
.•~~ CARp~ ~•,,
070881
.~ ST,N L. W~o•'.
PERMIT SET
PREUMNAAY
NOT FOR CONRTRUCIION
M
0
m
W
x
6
O
0
Z
F
~ ~w$g
a~ ;~~~
s~
;.~~
<.
N ONNjv
a =~~w
os;l-
f
F w
m m
~3 ;
0
z°a ~~~
CW ~ ~€
F~ pINO
F~ Z~I~ya`;u
~~ Wp3=rc
~V OQ~wi
g ~wo~
3~ ~~
V
W
Z
J_
Q
H
W
O
W
C7
Q
Z

ffsam er: JWA
DRAWN BR JCW
aEaOD tn: ALW
~~ 10-10.2007
~~R 015476050