20061855 Ver 2_More Info Received_20070607

^ ~ ^ Kimley-Horn
~ and Associates, Inc,
June 6, 2007
~-X855
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Attn: Ian McMillan
2321 Crabtree Blvd., Suite 250
Raleigh, NC 27604
Re: Wal-Mart Store No. 4447-00 Raleigh SE
NWP # 39 Request For More Information
Raleigh, Wake County, North Carolina
Dear Mr. McMillan:
Enclosed for your review is the additional information requested by NCDWQ on
May 29, 2007. The following information is included in this submittal:
• Updated EEP Mitigation Acceptance Letter (1)
• Stormwater Management Plans (2)
If there is any additional information you need or any way we can assist in
expediting the processing of this application, please do not hesitate to contact me at
[phone].
Very truly yours,
Kimley-Horn and Associates, Inc.
Tommy Cousins
^
Suite 300
4651 Charlotte Park Drive
Charlotte, North Carolina
28217
,JUN 7 2oor
aE~~ - wArr:k ~u~~IT-Y
TEL [phone]A~TLAhID3 APdO STOl~PaWATER BRPuidCH
FAX [phone]

L
^ Stormwate~ Management Calculations
~~ - (g~ ~
1
~ Wa1+Mart Supercenter
~ Store No. 4447-00
~ Site Plan Submittal
~ Raleigh, NC
' Prepared for:
Wal~Mart Stores, Inc.
' Sam Walton Development Complex
2001 SE 10th Street
' Bentonville, Arkansas 72716-4050
' ^ ~ ~ Kimley-Horn
~ and Associates, Inc.
©Kimley-Horn and Associates, Inc. 2007

1
1
1
1
1
1
1
1
1
1
1
1

WAL*MART SUPERCENTER STORE N0.4447-00
SITE PLAN SUBMITTAL
RALEIGH, NORTH CAROLINA
STORMWATER MANAGEMENT CALCULATIONS
Prepared for:
Wal*Mart Stores, Inc.
Sam Walton Development Complex
2001 SE 10~' Street
Bentonville, Arkansas 72716-4050
Prepared by:
HIMLEY-HORN AND ASSOCIATES, INC.
4651 Charlotte Park Drive, Suite 300
Charlotte, North Carolina 28217
APRIL, 2007
015476046

Austin L. Watts, P.E.
North Carolina PE No. 030861

030861 ~; "?
9G ~:~NC~~~~P•''~~~~~1 ° 7
i s •.... ,~ ~~
P .~
L. ~
SUN ~ 2007
t:~r.idf - y~AT R ~ ~R~ NCH
W~TIgND:~ ADD ~TO~ ::.

1
1
1
1

TABLE OF CONTENTS
OVERVIEW
SITE MAPS
SITE LOCATION MAP FIGURE I
FLOOD INSURANCE RATE MAP FIGURE 2
USDA SOIL CLASSIFICATION MAP FIGURE 3
USGS QUADRANGLE MAP FIGURE 4
IMAP SHOWING PARCEL AND PIN NUMBER FIGURE 5
IMAP SHOWING AERIAL FIGURE 6
WATERSHED MAPS
PRE-DEVELOPMENT DRAINAGE MAP FIGURE 7
POST-DEVELOPMENT DRAINAGE MAP FIGURE 8
WATER QUALITY CALCULATIONS
WET DETENTION BASIN CALCULATIONS
POND DRAWDOWN CALCULATIONS
CONTROL STRUCTURE DESIGN (WATER QUALITY ORIFICE)
CONTROL STRUCTURE DETAIL FIGURE 9
EXTENDED DETENTION WETLAND CROSS SECTION FIGURE 10
WATER QUANTITY CALCULATONS
TIME OF CONCENTRATION CALCULATIONS
PRE VS. POST CURVE NUMBER CALCULATIONS
STORMWATER SCHEMATIC DIAGRAM
PRE-DEVELOPMENT HYDROLOGY
POST-DEVELOPMENT HYDROLOGY
POST-DEVELOPMENT ROUTING INPUT
POST-DEVELOPMENT ROUTING RESULTS:
(2-, 15-, 100-YR, 24-HOUR STORM EVENTS)
RIP RAP APRON CALCULATIONS

' NITROGEN CALCULATIONS
EXTENDED DETENTION WETLAND PLANTING AND GRADING PLAN
' COPY OF U.S. ARMY CORPS OF ENGINEERS SECTION 404 GENERAL PERMIT
NCDENR DIVISION OF WATER QUALITY LETTER
JDE MAP
ii

C
1

0
ii

ii

7

OVERVIEW
STORMWATER MANAGEMENT CALCULATIONS
Wal-Mart -Raleigh SE (Sunnybrook)

OVERVIEW
' Background
This report has been prepared to support the Site Plan Submittal for the proposed Wal-Mart
Supercenter Store No. 4447-00. The approximately 32.6-acre project site is located in the
northeast corner of the intersection of Sunnybrook Road and Rock Quarry Road in Raleigh,
North Carolina (see Figure 1).
The project consists of the following components:
• Development of the Wal-Mart Supercenter lot and outlots located along Sunnybrook
Road and Rock Quarry Road, which includes the infrastructure required to serve the
proposed lots.
' • Five retaining walls for the proposed Wal-Mart Supercenter, one of which will surround
the extended detention wetland, and two which will protect wetlands and a stream.
• A stormwater management system comprised of an extended detention wetland and a
level spreader.
' Floodplain/Floodway
' The proposed site does not contain areas within a 100-year floodplain boundary as determined
from FIRM Panel # 37183COSSlE and 37183COSSSE, dated March 3, 1992 (see Figure 2).
' Streams/Wetlands
The existing stream and wetlands located within the project site, as shown on the plans, are based
on information provided by S&EC and have been field verified by the USACOE and the
' NCDWQ. See the attached exhibits, the NCDWQ Letter and USACOE Map. The stream is
located near the northeastern portion of the project site and the wetlands are located through the
center of the project site. A proposed retaining wall has been designed to minimize impacts to
' the stream and wetlands.
Site Topog_raphy
' The existing topography of the site ranges from approximately 270 feet along the southern
portion of the property to approximately 210 feet along the northeastern portion of the property.
The areas of the existing wetland and stream are wooded. The remainder of the site is generally
covered with light vegetation, consisting mainly of grasses. The project site will be cleared of all
vegetation on the interior of the site and vegetation will be preserved along the road frontage as
applicable and in most areas near the stream buffer.
Water Quality
Stormwater Best Management Practices (BMP's) will be used to minimize impacts on water
quality to meet State and local requirements. The majority of the site will drain to one proposed
extended detention wetland to treat stormwater. The extended detention wetland has been
designed to provide 85% total suspended solid (TSS) removal and to reduce the project site's
nitrogen export to 9.43 lbs/ac/yr. The permanent pool of water in the wet detention pond is
' Stormwater Management Calculations 1
Wal-Mart Supercenter Store No. 4447-00
Raleigh (SE), North Carolina

designed at 3 feet. The extended detention wetland has been sized to treat the entire site for
' water quality except for those areas surrounding the pond, which are to remain pervious and
minimally disturbed.
' Water Quantity
The proposed extended detention wetland has been designed using ICPR to address the City of
Raleigh's water quantity requirements to match pre-development and post-development peak
' runoff rates for the 2-year and 15-year 24-hour storm events per a condition of approval from the
City of Raleigh. A spillway for the proposed extended detention wetland has been sized to
convey the overflow of the 100-yr, 24-hour storm event into an existing tributary of the Neuse
' River.

Conclusion
The proposed stormwater measures were designed using methods prescribed by the
aforementioned resources. Based on the analyses provided herein, the proposed systems will be
adequate to address the stormwater requirements of the City of Raleigh.
SCS flAethad Pre-[3ertela nt Past-bevel meet

~rafnage Area 2-YR
Area (ac) peak nrnaff
(cfs) 15-YF2
peak runoff
~cfs)
,area tac} 2-YR
peak
runaf 1':5-YR
peak tunaff Past < Pre'?
(cfs}
BA-1A* 33.52 - - - - - -
DA-1 B* 12.37 - - - - - -
[7A-1 - 39.295 112.[137 - 37.F45 '! 11.555 YES
[7,~-2 17.x## 25.17$ 61:4 12.1'f 2C3.~2~ 46.824 YES
~A-3 2.38 2.376 7.43$ 2 31) 2.875 8.259 NO'"`
DA-4 2f.31 28.1119 73.853 21_d3 29.1.78 73.736 NO""
TOTALS 87.12 87.12
7~c~reFO.re3 de~terflos~a rs accepfabfe
QA-lA and C3A-1 B are subareas e~ QA-9
"" The °~ difference #~ the 2YR & 15Y~ storm event L~ta~aeen pre and pas#de~relapnient ate 21.©~?a and 11 _fl°l~ respeeti'~~e.
"" The °f° difference far the 2YFt stam-~ e^,+ent bet~..~een pre and pastdevelopment ~s 3.8'°.~-
Stormwater Management Calculations
YVaI-Mart Supercenter Store No. 4447-00
Raleigh (SE), North Carolina
2

[~~~
C
J

0

1
1
SITE MAPS
STORMWATER MANAGEMENT CALCULATIONS
Wal-Mart - Raleigh SE (Sunnybrook)
I
LJ

r
i'

['

1
1

1

W E
S
' ~=~ WAL-MART SUPERCENTER SITE LOCATION MAP FIGURE
IGm~eyHom and Assoaates, inc. #4447-00 N OT TO SCALE ~
RALEIGH, NC
TMS OOLSIIEfif, T~ilt:7t MM l1E CONOp14 NO OFSi01~4 P~O11Ea lE101, AB NN E611R~EAf OF SEANCE, E3 EAE)OFD ONLY f0t 11E F1IPOSE MO CFM iDR NNICH R NAB flEPNEA RFilSE
aF wo ~na~ imp oh no ooc~aEAr wmour wanEA wn~aox wa ~oiww«a~ er watY-xom no E~ ~ sEVU ee wn~our u~snr m waFY-HOw~ ao w~soaaE$ nc.

ED46 Rnlelph SE CSlunybr
~* ~ v ls..,.b~ 3rI sl.."I,u U
City of Raleigh
Extraterritorial Jurisdiction
370243
x
ZONE X

ZONE X
SITE
2542

LIMITS
ZONE X
RARORAI FlBDD IX9URAMCF PROGRAM ~ (~
~ NRfIDXRI FU]DD IXSURPML[ PROGRAM

FIRM '
'' ~
FIRM
FLOOD INSURRNCE RRff MRP I I FLOOD INSURRNLE BRIE MRP
WAKE COUNTY. I WAKE COUNTY.
NORTH CAROLINA AND NORTH CAROLINA AND
INCORPORATED AREAS INCORPORATED AREAS

PRNEI 55pF0f 610 .u.o a
I
, I
j; ~
~I PRNFl SSSfOf B10 0 --
I.
-
o~ a w ~,~ ~ ~ B-
- = ~I

~~
~~~ M » N., MN I
XX
~ i .
~
MAP NUMBER: i t MRP NUMBER:
3716300551 E I, ~ ' 37163L0555 E
EF6ECRYE BRIE EffFLI1VE DABE:
MRRCN 3, 1991 ,
II
I
D
~
,
~ ® MARGf 3, 1992
FednslF F~~'Y M.nY.+~^~AF~.Y ~I
II
II
~I
II
II1I
IB
l~ UIINII
gl~IE~^^R^.Y M~o~emnAlnb
~ City of Ral
~ 370243
- -
CORPORATE
0=~ WAL-MART SUPERCENTER F.I.R.M. PANELS:
#4447-00 3718300551 E AND 3718300555 E
Kimley-Hom and Associates, Inc. RALEIGH, NC SCALE: 1" = 600'
THS OOOI11E716 TO~TIFA NRH TIE COIIL4PIS NO Or:~(.114 PI®IIm 1E7E?!, A4 AN Ol41R111F11F aF g7tVILE. 6 MQOm OILY PIIR T1E RNO'OBE AID CllEIIF FAR MOCN R BRR4 PItFPAIED. IE]RSE
OF NO NPROF FR RFIIRFCE ON 71LS DOQl1E7R MDIIOIR NM'IDB MRNOR[SA710N NO AOAPORI011 9Y NIIEY-110601 NO ~OGOES NIC. SFINL E wBR10UF LB~JIY lO gIFY-110101 MO IL~900Ri6. MG
ZOI
G/
FIGURE
2
I City of Raleigh
I 370243

' P~ [015476 Val-Mort SIteCIvR X46 Rnl SE CSewm ~t [~d~bFts oVk
~_~
i
~_l~-+~5
' r~~ lJ L
' ~~
k
~~~ - ~i~ _
z
~`
f
.. ,4'r~
~ ~ '_~
~_ ~
~ ~ ~
~ ~-~ ~
_ SITE
^ ,~. ~ ~
^ - '~~'
_ ~n
~~
~, r
~-
^ .~ ~_ - --
^ ~
~~
~N~ ~ ~ ~ 1
~ ~e~~~~1 ~ ~~
w ~ ~ ~~?~ "' ---_'~ ~ ~
^ ~ ~~~ ~ l
f
=~ WAL-MA #4447P ORCENTER SOILS MAP FIGURE
' Kimley-HomandAssociates,lnc. RALEIGH, NC NOT TO SCALE 3
tees noare~Mr, ioaenfle eeem ntE oan~rs wo oE.vara gem ee~. ro AM ~aeae~r of gRNCE 6 Neoom ae~r rtx nE nnrast: ao aner rule ww+ rt t~ weer~n. ~
aF no ~rnarot imp a nea ooaaExr eeeneoert wanoe ~tneeav~abe weo ~nerocpn ar war-xaa no ~soa~rrs Nc. awl ee wnaur e~m m bear-xoea ~-o w Nc.

' P~[015476 Vnl-Mnrt SlteGvll~46 Rnl SE oW~t [E~dllbltsWk
~ •~~ ~ ti x
~ •~- }qtr fr'~. ~ ~ r ~ ~ ~ ~•~' ~7 ~ ~, ~ f ~} ~ . h ` ~ .. ~e it ..
s ~ ,~
:, ~
~, _
_ ~ ~
v r
~ I3i~ 1 R .. ~ .. ~_ `~ _ 'rf
e x ? c Q~ -~L-w~~. L
-~ ~ -
s: ~ -_ --~.,__ y, ay rr - _ E
' t rf 4~.
~ .. LL r 4-~ C~ k' ~~ i ~.~v[_. l 1~ ~ ~t 1. i
x'46 ` y~ `~°'~,~~, r. ~~ti ~"~+ F ~, ~^ ~ ~~ -
-_
:~
r
~~ _
4 S i
n l ~1 YY
_. •-
~'--_~ t~ ~'~ ~~-"ts..v~ 1 ~ k~ ~ ~, '~1 ~ ~ ~ - _. t
.f
fir. ~~~ ~ ~~Yr ~ T _~`• ~ ~
..~ °'~ __ <`~` ~~ ~' a~ -- ~ ~''~~ ~~~. may, ~ .r e e
_ ~ -.. .. "
. ~ ~, ~ ~ ~ i ~ .,.~ ~ , ~ ~,
~~ ~ ~-
.. ~ r ~`-->_ ~ JF,I ~ ~k ~'1 t 1~~i i f '~-•~ ~ ` _ ~t' ,E. ~ae _ ~ - k ''fir.
0=~ WAL-MART SUPERCENTER USGS QUADRANGLE FIGURE
#4447-00 GARNER, NC (1993)
Kimsey-Homanda~sociates,-nc. RALEIGH, NC SCALE: 1" -1000' 4
iH3 DOLZ~F]R 104TQ MIX TE OOXCFPIS ND GE91013 PI®Ilm NfliOl, ILR IN N3111UkM OF ~E B MOOm plY FDR 7FE RIId+DBE NO QDIf FCR MiCN R M\R PIEPII~D. IE119E
' OF NO ~f710PER RESIAXCE ON 715 DOCIIIElR MIIpU~ MitIiF11 AUIIICIaQAIOX ND MWfRIpN 9Y IaLEY~l010i MO AA90CiVk5, MG MWL ~ \IIIIOtR ll1~JIY 70 IO~EY~IORN NO A490QQES NC.

' P~\D15476 Wnl-Mort SiteCivil\046 Raleigh SE (Sunnybrook)\Dwg\Exhibits\Vic nnps.dwg
' ~=~ WAL-MART SUPERCENTER IMAP ZONING WITH FIGURE
#4447-00
Kimley-Horn and Associates,lnc. RALEIGH NC PARCEL AND PiN NUMBER 5
THIS DOCUMENT, TOGETHER WITH THE CONCEPTS AND DESIGNS PRESENTED HEREIN, AS AN INSTRUMENT DF SERVICE, IS INTENDED ONLY FOR THE PURPOSE AND CLIENT FOR WHICH IT WAS PREPARED. REUSE
OF AND IMPROPER RELIANCE ON THIS DOCUMENT WITHDUi WRITTEN AUTHDR17.ATION AND ADAPTATION BY KIMLEY-HORN AND ASSOC WTES. INC. SHALL BE WITHOUT LIABILITY TO KIMIEY-HORN AND ASSOCIATES, INC.

- -
, ~~ ~ ~ ~ ~
o~:~~
b~
~
y ~~
'~ ~ ~
~, ~ y"
T., V
}~
'~1 'fk~'~ Y~f ,.

f A
L
:~. ~

~
~ ,
~
~ ~ ~
~
~
~ ~~~
`
~ ~
~ ~ 4 t n5
"- ~.
'
.. t .
'~
a" k,
,. ~ ,er=g
~

~~ l! ~ ~ _
,~1t
j "~tx r

lu m
~

acid re ~s t
_
~~ ~` _ ~ ~ ~ ~~~~
~~ ~ e&> ~ d.
~ ''~i

~

t~ par~~l Horn
..
~,
_

r~
~"
~ ~
~~
~

t
~i
~
i . ~~ ~
f s z~ ~ ~~ ~ E
o rye
€~~
~
e~ ,
~~
#' 6uF~r ~e~ ~ _ ~
~~ ~ -s-~.4~_
~ '~
~ ~ '
r
~°~
_ --~ ~ f

£~
1 in = 625 ft ~~ e
~ .~~
.
~~ ~ ~
Real Estate Data and ~
~~ ~ °~ ~_ ,~ °~`
~
Revenue Departrncnt ~~ ~`
~

~
~ ~:,
„~ ,
~
~

_,~<,. ~
~'¢..
-' ~. x~` 4

c~,l 'F.,,. ~° G
~¢~ '"tip
~r
~ .

Fuqu~Y- Varixa
A am-. '?
d~ ~ ~
~ d ~
~

_m Q ,..~
=
Raleigh ~unfnv
l~xaks Forest.Zo„;na
Soils Legend
F7,ood~lain Data
~ 1 41 1 ~!5 1 ~~ p, il~ j
~Count}~ honing
Raleigh honing
Electoral bistricts
,hdm i ni strative bi stri cts
=~ WAL-MAR~T~447POE~RCENTER IMAP FIGURE
Kimley-HomandAssociates,lnc. RALEIGH, NC AERIAL INFORMATION 6
His arcc~lolr, ioaEnEx rrm nE awls wo aswa ~m solar. As ~ ~aml~ort av sEmnce s mvom alir rac nc p no ccnrt lac wliac R wls ~rw+m. IFII~
a• No ~rlllapm Imyvccf olc n6 ooaao+r rlmlalr rllmrrc iunlora~alolc wo rnwoalac er IvarEr~laa No emirs. ~cc scar. ee wnraa u~arrc m I~a~r-xaa wo ~oa~ls, ra

WATERSHED MAPS
CI
t~~

i

STORMWATER MANAGEMENT CALCULATIONS
YYaI-Mart -Raleigh SE (Sunnybrook)

'ONI 'S3IVIOOSStl ONV NNOH-A3lWIH O1 AlIIIBVII 1O0N14N 3B llVHS 'ONI 'S31tlI00SSY ONtl N2lOH-A3lWIN AB NOl1V1dVOtl ONV NOLLtlZ1210H111tl N311RIM LIlOH1N1 1N3W0000 SIHL NO 30Ntlll3a
213dOtld Wl ONV ,O 350321 '03NVd3ild StlM 11 HOIHM 1103 1N3110 ONV 350dNOd O1, 103d5 3H1 tl0, AlNO 030N31NI SI '30N213S !0 1N3WOtl15N1 NV SV 'N13213H 031 N3S321d SN01530 ONV SLd30N00 3H1 H1 W. 213H13001 '1N3W0000 SIHl
ICtS-CCC (.OL) :3NOHd
L db'W ~Jb'NI`d~14 (~S HJI~~b~l) ~N `HJI~~b'~I `00-Lt~ti~# =,BO-~tt (.BLI :><Y,
LILBL VNf1ntlV] H1210N '3lln1tlVH~
osc 311n5
~I1~'$1318CIOSSy P~tla tltlrd 3IL~NJ lS9
~~I(1~1~ 1N~Wd0~~~~4-~~Id ~I~1N~~d~df1S ld`dW-~`dM woH•6a~wIN ^~^
J
J
Q
~ ~ ~
_ ~
~~ 1' ~ ~ )
,~• ~ ! " '
~, - t
,,
~ 'M ~ ~~. ~ r i r~
et ,
W , : ,.
~ CV ( ;
_ .
W~
~ ~ a ~ ~I'il1 ,~ = ~ ,r,
1 u'~' co ( I ; I I' 't ~ `` ~~
1 '~ IQ„ :11 it i It~lll' ~ `~'~il~~lJfi~ ~.` 'IIIti \ ~'\~ ~I/ ~~;
' } ~ r o
I
j / ' j'~.
l ~_~ Wu 1 I,,~,.., ~ , `~~ , ;~ r4 :'r cal. ~ ;, I.,` ,i, r~ ~':',
i
~ 6 I .~.
~.
~ .~~' I~ 'K; // I ~ ~ ®~ lyr)!Illi lll~'lll lrl ~I.

r
~~ .r ;. " \ I~ ~ ~II111111~i~%/~%~/ .% ~~.~,I]1~'~ il'~I ~ > " / W
' ~ ,+ - ~ . .. \ 1 I ~ + y ~ jlj4 ~: ~~/.. 'ski l~l 1 I ' a w
~ +~~ ~~~~ }~ i. . i .r 1111„'llJ, ~ ;%_, ~:,.,1~.nM~u~,~~l~ / ~ ° --o
4"" ~ III ~ ice" i ,i,~~~11 ~Illllllljll. ~ :i ~j~ if(f7'~I ~/:~, ~ ° WC7
r _ '~ .1 ~ I ~/ / 1 ~ W
I i ~ ~I
1 1
~I ! l 1 I ~ / i '1
o ~\ \ ~ ~ 1 ~ I `/r I i 111 /i //!~/ rl! d't" f=• II
~ V ~ ~ ~ ~ \ r I II /. 111 III ~ i'/ /r ii"i rt I x
'' ~ Rf ~I ,~ ~ (~ it / // I I. r ~, <t ~ il' ° z ~
~r ~ y~ ~ \`. I r!i rr .11 t' ~ \i ` f l l l t ~ ~~ '~ ~ ~ v
~ ~~~o- 4 \ ~ \ I r~ I,~ } I I i r \ ~ ti 4 ; a, d
~~€ " ems. ~ y j bi ,, i ~ {q /; l Itt'i I \: _> \ \. h..." ~ 4441y::..-~ C7 ..
1 i ~ ~ \ '~ i- \ , 1
~, -iii, \ .. \ \ ~
"Q ..i ., •~',. !'1 ~i}~ \ ~;\~,\}-~,~}~~ /~/~~/. :~ ~, .~` ~jgX'.}IC'I' I 7S r~'S~ -
za ~_ I I , ,,,t
I i€1
s ~ 11 ., ~~~I(il Illlil~ Ilftit ,',y}\t~
. 4 ` \ /` ~
a€ Q `,Z V tiua li i ! I' ' (",i I ~~ 2 ,`" 1 ~'. ~;,;'} `\\ ~ rI ~,-
~ I
z y~
4 \ i^ %
(' '~
.,
.,
~'
' r~ ' M
^ ~~
- ,S(g--~~ ~ ~ E
., /
,
''~ ~'~1 r1r1~,~~..,>-I-~-~-~ i~' \ <. .. '~ ~ ` Il~ \,I~ r .- Z Q Cr0 tf'~
-
w
~~ ,
- C]
\
_-
s.. ,,
..... ~~-
~_.
', ~ -
+~ ,
w~
,., k
' ,
1 ,
`, ~ . \,
.. _. .~~ ~t ~ ,~~ ..... .. I Ili, ~~ ~. ~ ``~ _ '.~ _
\
..
;.,,, ,y ~ ~ ~ ~ ~
+t ,'.
. , \ .~a ~
r~r 1 ~ ~ ~ . ` ~ ~ J
...
,
r;• _
~ _
,' ~,
` - .el) ~ -- ~~.
_ i ~
0
~ ~,
` `` `, _
.. H
`., .. ;
` J
` J
Q'
IL.
F- .
F-
6Mp~~.~oM,~ano~a~l-s~lgl~{x~ WMS\SlIHIHX3\w.~o~g\s~ln~\~~{oo.~q~CuunS) 3S U61a~oy 9~0\~inlSa}IS ~ ~nW-1nM 9LbST0\Id

'~NI 'S3IVIJOSStl ONtl N210H-A3lWIN Ol AlIIIBYII 1NON1N1 38 INNS '~NI 'S31tlI~OSSV ONV NiIOH-A3lWIN AB NOLLtl1dV0Y ONV NOLLtlZIilONlfltl N3111tlM 1f10N1N1 1N3Wf1~04 SIHl NO 3~NVI1321
213d021dW1 ONV ~0 35!1321 '03HVd321d SYM 11 H~IHM 210J 1N311] ONV 350d21f1d JI~g3d5 3N1 2101 AlNO a3(IN31N1 51 '37N2135 j0 1N3W(12115NI NV SV 'NI3213H 031N35321d SN01530 ONV S1d3JN0~ 3N1 NLVA 213N13901 '1N3Wf1J00 SIN!
If IS-ffC (.OLJ 3NOHd
8 db'W ~J`dNlb'~Ia (~S HOI~~b'~J) ON `HOI~~b'~I `00-L~t~b# B.~-CCf oBL> :%Y,
LIiBL VNNOtlY] NItlON ']LLOItlYN]
Bsc ]21ns
~~I'991QYJOSStI P~tlO NtlVd 311~H] ISBI
~~1(101~ 1N~WdO~~A~4-1SOd ~I~1N~Od~df1S ldb'W-~b'M woH-Relw1~ ^~^
M
d- ~ , : -
W N J _ ._ - _
Q
~ 11 = ;,
a ~ '~
~ ~ N ~"''
Q J C ~"~ ,
;,- ti ~, ,
Z LQ., 11 ,11 ~
~Oz.c~'. J
D F= V. FT
Q
f--'
' ~
`~ • ~ ~-~, ~, O
.~
~ ...1
<~
,~ a~ ~ r / N ~'- 'r'
_.,~,.,
~' _ ,III .,%; ! - -' - oW~ ~\;` 4 _ tt;..
;w
\ .q ~ \
~ ~~ 1 ~ \~ '\ •~, ; , J 11,E / ; y~,, j r I l rYl~
f
_ / s%
a~ ~
~~ ~ ~~ ~„ ~ i~/i / ' J , ~ r~ -,r~ i to
1 ~~• r ,~ /
tip . 6 ` 'a~a/ /~ %j li~~ I~~C \~~ ~ l,l
. ~d. gay ~ ~ i~ ',`.~ 1~, ~~ r'\ ~ ~ i ~ ,ii ~/~ %1 ~~\ ~ ,.1%~ ~~
' 1
r ~>~s, '~: '~. ~ 1 fl {~: ` / -fir .ice ~ ~ \\\\ ~ _ ,r
R -N~do~ .., u`~ .. ~ I, 111. _ ,fir I /. al
1'
-~. ~ `~ - .. ~ / r 1 ~ ~ / 11 Il II I I 1 I i
r ~~ I .' 1~ ~ 1 yi : ~ Ilr '1lII~JII'rlrJr~
~~. • ~ - I Ili,1 r/~~ j~/ ~ / )I'll ~ v ° ..o
`•~ .._ ~ ~ r r ~,1i q\Ii'~1 jf lljl 6 1 j% /.IJ rI J III~i\ i [>~ II
~ ' i \ I \ 1'11; ~ ~~ ~/~ / p J ,, IJIIII~ ~ ( ~ i x o z ~
® ~ ~ 1 ~~ X11 11 ~rfj I ~g~ ~~'~` ,~(! / a~3 ~ In q
~" r 1 \' !Z
!; ~. ~ ~" Sr I: ~ tti%'v,J jpprflj,~,; ~\ ~ J11 1~~5,.,... ~
}
- ~ ~ o~~ - '... ~(~ 1 1, jr / \ ~ ~ - \ \ \ a\ , I,
! ,
d~~ ~ 111 \\~ \\\ ( \b~ /// \\ \ \ .\\` t 5'lb
v
// _
r'. `,,
~,~ \\ ,\\
8 ', ` ' ~.
.,
I \ ri, \ l
• W ~ :+ ~ 1111 ` ",' p '~ , \ \\ \ I
• I r '.
' ~- ~ ~ ' ~~ ' W (L/ 0.... a .': i. J : '' ~ Ilt\ 1~~11 !.r i ~ \ \ ~ t ' \_. 1
\
,,,. `
l
. _ \ ~ ,
~'
~: 0 V,\ \ ~\ v/
y
L \ T .~ _-L ? 11I \I
'', , ~ M ~ ~Y~ •, 1.11 \ h ~ `~ ~.\ II ..
.~` ~! ~~ . ~ ,i \ -- \ .i b\ . ` 111 ~ a 1
t
~ 1, - cj '
' ,~
f ~ ~ 1 ~~
ti
_ ,
..i I
i " ,~,j
~r ,/
~ ,~§ /'
.. i/ ,
",
~;
E
.,,
.,
. ~ ~~ .
- ,.. .. ,,
,~ ,, ~, z
.-
'-- /'
~~
1 ,
._ -
~°OA^
" r-
-~ .
.. _ _ ;, a
..
I _
,~ _
~ \ ,
;* ~ \ \ V
y • I , _ O
._ -
C ~L{~~ Iv
, L~~
'S~ _i.
_._,
~_
WlYlp \
....... .. N ... V ~ G I ~ ._
',
i
~ 1~-
. 4
1
,` „~
ti~F _ ~ \
W C.~ ~ \
.. ~ ' I !.. ~ ~'
e
~ .11 ~ rr ~ ~ ~ \\I
l b~ ~ ~
.' ,
a a II , f N ~~
~ .
..; ~ \
w '~
z ~ •
3~ ,
' Q
`. ;,. ~ r ` .~ ,
` ~ _
~. ,~
o , ~ . -1
J r . .
`; ~ , LL
_,
O ;~' _ i-
H , O,
' l .' : _.
\.. i O
,~ ,
J ,
_ ' ..J
Q
LL'.
F-:
~'
N
6Mp•~{.~oM,~ano~a.~ s Igl~x S~ X3~w.~o S~s~ n <~oo.~ ~Cuuns ~6Ia b0 ~!S In STO
~ ~ i ~ ~ ~ ~ ~~ ~ ~ ~ ~ ~ ~ ~ ~ ~- "~ ~

C!

0

STORMWATER POND DESIGN SUMMARY
STORMWATER MANAGEMENT CALCULATIONS
Wal-Mart -Raleigh SE (Sunnybrook)

1

ii

WATER QUALITY CALCULATIONS
STORMWATER MANAGEMENT CALCULATIONS
Wal-Mart -Raleigh SE (Sunnybrook)

1
~ Kimley-Horn
C ~ ~ and Associates, Inc.
1 Project Information

WET DETENTION BASIN
Project Name: Wal-Mart #4447-00, Raleigh, NC (Raleigh SE)
KHA Project #: 015476046
Designed by: JMH Date: 3/13/2007
Revised by: Date:
Revised by: Date:
Site Information
Sub Area Location: DRAINAGE AREA #1

1

Drainage Area (DA) = 25.97 Acres
Impervious Area (IA) = 21.18 Acres
Percent Impervious (I) = 81.56
Required Surface Area
Permament Pool Depth:
SA/DA =
Min Req'd Surface Area =
Required Storage Volume:
Design Storm =
Determine Rv Value =
Storage Volume Required =
3
3.42
38679
1
0.05 + .i
73909
_ ft
_ (85% TSS Removal via Pond)
_sf (at Permanent Pool)
_ inch (Project Does Not Drain to SA waters)
)09 (I) = 0.78 in/in
cf (above Permanent Pool)
' Elevations Area (s.f.)
Top of Pond Elevation = 230.00 ft
Temporary Pool Elevation = 224.00 ft 41465
'
Permanent Pool Elevation = 222.00 ft 40389
Maint. Shelf Beginning Elevation = 222.00 ft
Forebay Weir = 222.00 ft
Maint. Shelf Ending Elevation = 220.00 ft
Bottom Elevation = 219.00 ft
' Wet Basin AreasNolumes
Area @ Top of Temporary Pool = 41361 sf (Elevation = 224.00 )
Area @ Top of Permanent Pool = 40390 sf (Elevation = 222.00 )
' Volume of Temporary Storage = 81751 cf
Is Permenant Pool Surface Area Sufficient (yes/no)? Yes ( 40390 > 38679) sf
' Volume of Stora a for 1"Storm =
9 81751 Yes ( 81751 > 73909) cf

C~/~ Kimley-Hom
~ and Associates, Inc
WET DETENTION BASIN
Project Information
Project Name: Wal-Mart #4447-00, Raleigh, NC (Raleigh SE)
KHA Project #: 015476046
Designed by: JMH Date: 3/13/2007
Revised by: Date:
Revised by: Date:
Site Information
Sub Area Location:
Drainage Area (DA) _
Impervious Area (IA) _
Percent Impervious (I) _
Orifice Sizing
25.97 Acres
21.18 Acres
81.6 % (Drainage Area)
Q2 Days = 0.4731 Cfs
Q5 Days = 0.1892 Cfs
Width of Orifice = 5.50 in
Height of Orifice = 2.50
Q orifice = 0.45 Cfs
Drawdown Time = 2.1 days
less than 5 days (yes/no) ? yes
greater than 2 days (yes/no) ? yes
(Flowrate required fora 2 day drawdown)
(Flowrate required fora 5 day drawdown)
(Inches)
(Inches)

u

POND DRAWDOWN CALCULATIONS
' STORMWATER MANAGEMENT CALCULATIONS
Wal-Ma~•t -Raleigh SE (Sunnyb~•ook)

POST-DEVELOPMENT DRAWDOWN
Simulation Node Group Time Stage Warning Surface Total Total Total To
' Stage Area inflow Outflow Vol In Vol
hrs ft ft ft2 cfs cfs of
DRAWDOWN WET POND BASE 0.00 224.000 245.000 41465 0.000 0.633 0.0
DRAWDOWN WET POND BASE 1.03 223.944 245.000 41435 0.000 0.623 0.0
DRAWDOWN WET POND BASE 2.03 223.890 245.000 41407 0.000 0.614 0.0
DRAWDOWN WET POND BASE 3.03 223.837 245.000 41380 0.000 0.605 0.0
DRAWDOWN WET POND BASE 4.03 223.785 245.000 41352 0.000 0.596 0.0
DRAWDOWN WET POND BASE 5.03 223.733 245.000 41325 0.000 0.586 0.0
DRAWDOWN WET POND BASE 6.03 223.683 245.000 41299 0.000 0.577 0.0
' DRAWDOWN
DRAWDOWN WET
WET POND
POND BASE
BASE 7.03
8.03 223.633
223.584 245.000
245.000 41273
41247 0.000
0.000 0.568
0.559 0.0
0.0
DRAWDOWN WET POND BASE 9.03 223.535 245.000 41222 0.000 0.550 0.0
DRAWDOWN WET POND BASE 10.03 223.488 245.000 41197 0.000 0.540 0.0
DRAWDOWN WET POND BASE 11.03 223.441 245.000 41172 0.000 0.531 0.0
DRAWDOWN WET POND BASE 12.03 223.395 245.000 41148 0.000 0.522 0.0
DRAWDOWN WET POND BASE 13.03 223.349 245.000 41125 0.000 0.513 0.0
' DRAWDOWN WET POND BASE 14.03 223.305 245.000 41101 0.000 0.503 0.0
DRAWDOWN WET POND BASE 15.03 223.261 245.000 41079 0.000 0.494 0.0
DRAWDOWN WET POND BASE 16.03 223.218 245.000 41056 0.000 0.485 0.0
DRAWDOWN WET POND BASE 17.03 223.176 245.000 41034 0.000 0.476 0.0
DRAWDOWN
DRAWDOWN WET
WET POND
POND BASE
BASE 18.03
19.03 223.135
223.094 245.000
245.000 41012
40991 0.000
0.000 0.466
0.457 0.0
0.0
DRAWDOWN WET POND BASE 20.03 223.054 245.000 40971 0.000 0.448 0.0
DRAWDOWN WET POND BASE 21.03 223.015 295.000 40950 0.000 0.439 0.0
DRAWDOWN WET POND BASE 22.03 222.977 245.000 40929 0.000 0.429 0.0
DRAWDOWN WET POND BASE 23.03 222.940 245.000 40909 0.000 0.420 0.0
DRAWDOWN WET POND BASE 24.03 222.9031 245.000 40889 0.000 0.411 0.0
DRAWDOWN WET POND BASE 25.03 222.868 245.000 40869 0.000 0.401 0.0
DRAWDOWN WET POND BASE 26.03 222.833 245.000 40849 0.000 0.392 0.0
DRAWDOWN WET POND BASE 27.03 222.798 245.000 40831 0.000 0.383 0.0
DRAWDOWN WET POND SASE 28.03 222.765 245.000 40812 0.000 0.374 0.0
DRAWDOWN
DRAWDOWN WET
WET POND
POND BASE
BASE 29.03
30.03 222.733
222.701 245.000
245.000 40794
40777 0.000
0.000 0.364
0.355 0.0
0.0
DRAWDOWN WET POND BASE 31.03 222.670 245.000 40759 0.000 0.346 0.0
DRAWDOWN WET POND BASE 32.03 222.640 245.000 40743 0.000 0.336 0.0
DRAWDOWN WET POND BASE 33.03 222.610 245.000 40727 0.000 0.327 0.0
DRAWDOWN WET POND BASE 34.03 222.582 245.000 40711 0.000 0.318 0.0
' DRAWDOWN WET POND BASE 35.03 222.554 245.000 40695 0.000 0.308 0.0
DRAWDOWN WET POND BASE 36.03 222.527 245.000 40681 0.000 0.299 0.0
DRAWDOWN WET POND BASE 37.03 222.501 245.000 40666 0.000 0.290 0.0
DRAWDOWN WET POND BASE 38.03 222.476 245.000 40652 0.000 0.280 0.0
DRAWDOWN WET POND BASE 39.03 222.452 245.000 40639 0.000 0.271 0.0
DRAWDOWN WET POND BASE 40.03 222.428 245.000 40626 0.000 0.262 0.0
DRAWDOWN WET POND BASE 41.03 222.405 245.000 40613 0.000 0.252 0.0
DRAWDOWN WET POND BASE 42.03 222.383 245.000 40601 0.000 0.243 0.0
DRAWDOWN WET POND BASE 43.03 222.362 245.000 40589 0.000 0.233 0.0
DRAWDOWN WET POND BASE 44.03 222.342 245.000 40578 0.000 0.224 0.0
' DRAWDOWN
DRAWDOWN WET
WET POND
POND BASE
BASE 45.03
46.03 222.322
222.304 245.000
295.000 40567
40557 0.000
0.000 0.215
0.205 0.0
0.0
DRAWDOWN WET POND BASE 47.03 222.266 245.000 40547 0.000 0.196 0.0
DRAWDOWN WET POND BASE 48.03 222.269 245.000 40538 0.000 0.187 0.0
DRAWDOWN WET POND BASE 49.03 222.253 245.000 40529 0.000 0.177 0.0
DRAWDOWN WET POND BASE 50.03 222.238 245.000 40520 0.000 0.165 0.0
DRAWDOWN WET POND BASE 51.03 222.224 245.000 40513 0.000 0.153 0.0
' DRAWDOWN WET POND BASE 52.03 222.210 245.000 40505 0.000 0.141 0.0
DRAWDOWN WET POND BASE 53.03 222.198 245.000 40499 0.000 0.130 0.0
DRAWDOWN WET POND BASE 54.03 222.187 245.000 40492 0.000 0.119 0.0
DRAWDOWN WET POND BASE 55.03 222.177 245.000 40487 0.000 0.109 0.0
' DRAWDOWN
DEAWDOWN WET
WET POND
POND BASE
BASE. 56.03
57.03 222.168
222.159 245.000
245.000 40482
40477 0.000
0.000 0.101
0.093 0.0
0.0
DRAWDOWN WET POND BASE 58.03 222.151 245.000 40473 0.000 0.086 0.0
DRAWDOWN WET POND BASE 59.03 222.144 245.000 40468 0.000 0.080 0.0
DRAWDOWN WET POND BASE 60.03 222.137 245.000 40465 0.000 0.074 0.0
DRAWDOWN WET POND BASE 61.03 222.131 245.000 40461 0.000 0.069 0.0
' DRAWDOWN WET POND BASE 62.03 222.125 245.000 40458 0.000 0.065 0.0
DRAWDOWN WET POND BASE 63.03 222.119 245.000 40455 0.000 0.060 0.0
DRAWDOWN WET POND BASE 64.03 222.114 245.000 40452 0.000 0.056 0.0
DRAWDOWN WET POND BASE 65.03 222.109 245.000 40449 0.000 0.053 0.0
DRAWDOWN WET POND BASE 66.03 222.104 245.000 40447 0.000 0.050 0.0
DRAWDOWN WET POND BASE 67.03 222.100 295.000 40444 0.000 0.047 0.0
' DRAWDOWN WET POND BASE 68.03 222.096 245.000 40442 0.000 0.044 0.0
DRAWDOWN WET POND BASE 69.03 222.092 245.000 40440 0.000 0.041 0.0
DRAWDOWN WET POND BASE 70.03 222.089 245.000 40438 0.000 0.039 0.0
DRAWDOWN WET POND BASE 71.03 222.085 245.000 ~ 40436 0.000 0.037 0.0
DRAWDOWN WET POND BASE 72.03 222.082 245.000 40434 0.000 0.035 0.0
DRAWDOWN WET POND BASE 73.03 222.079 245.000 40433 0.000 0.033 0.0
DRAWDOWN WET POND BASE 74.03 222.076 245.000 40431 0.000 0.031 0.0
DRAWDOWN WET POND BASE 75.03 222.074 245.000 40430 0.000 0.029 0.0
DRAWDOWN WET POND BASE 76.03 222.071 245.000 40428 0.000 0.028 0.0
DRAWDOWN WET POND BASE 77.03 222.069 245.000 40427 0.000 0.026 0.0
DRAWDOWN WET POND BASE 78.03 222.067 295.000 40426 0.000 0.025 0.0
' DRAWDOWN WET POND BASE 79.03 222.064 245.000 40424 0.000 0.024 0.0
DRAWDOWN WET POND BASE 80.03 222.062 245.000 40423 0.000 0.023 0.0
DRAWDOWN WET POND BASE 81.03 222.060 245.000 40422 0.000 0.022 0.0
DRAWDOWN WET POND BASE 82.03 222.056 245.000 40421 0.000 0.021 0.0

Interconnected Channel and Pond Routing Model (ICPR) ©2002 Streamline Technologies, Inc. Page 1 of 2

POST-DEVELOPMENT DRAWDOWN
Simulation Node Group Time Stage Warning Surface Total Total Total To
Stage Area Inflow Outflow Vol In vol
' hrs ft ft ft2 cfs cfs of
DRAWDOWN WET POND BASE 83.03 222.057 245.000 40420 0.000 0.020 0.0
DRAWDOWN WET POND BASE 84.03 222.055 245.000 40419 0.000 0.019 0.0
DRAWDOWN
DRAWDOWN WET
WET POND
POND BASE
BASE 85.03
86.03 222.053
222.052 245.000
245.000 40418
40417 0.000
0.000 0.018
0.017 0.0
0.0
DRAWDOWN WET POND BASE 87.03 222.050 245.000 40417 0.000 0.016 0.0
DRAWDOWN WET POND BASE 88.03 222.049 245.000 40416 0.000 0.016 0.0
DRAWDOWN WET POND BASE 89.03 222.047 245.000 40415 0.000 0.015 0.0
DRAWDOWN WET POND BASE 90.03 222.046 245.000 40414 0.000 0.014 0.0
' DRAWDOWN WET POND BASE 91.03 222.045 245.000 40414 0.000 0.014 0.0
DRAWDOWN WET POND BASE 92.03 222.044 245.000 40413 0.000 0.013 0.0
DRAWDOWN WET POND BASE 93.03 222.042 245.000 40412 0.000 0.013 0.0
DRAWDOWN WET POND BASE 94.03 222.041 245.000 40412 0.000 0.012 0.0
DRAWDOWN WET POND BASE 95.03 222.040 245.000 40411 0.000 0.012 0.0
DRAWDOWN WET POND BASE 96.03 222.039 245.000 40410 0.000 0.011 0.0
' DRAWDOWN WET POND BASE 97.03 222.038 245.000 40410 0.000 0.011 0.0
DRAWDOWN WET POND BASE 98.03 222.037 245.000 40409 0.000 0.011 0.0
DRAWDOWN WET POND BASE 99.03 222.036 245.000 40409 0.000 0.010 0.0
DRAWDOWN WET POND BASE 100.03 222.035 245.000 40408 0.000 0.010 0.0
' DRAWDOWN
DRAWDOWN WET
WET POND
POND BASE
BASE 101.03
102.03 222.035
222.034 245.000
245.000 40408
40407 0.000
0.000 0.009
0.009 0.0
0.0
DRAWDOWN WET POND BASE 103.03 222.033 245.000 40407 0.000 0.009 0.0
DRAWDOWN WET POND BASE 104.03 222.032 245.000 40407 0.000 0.008 0.0
DRAWDOWN WET POND BASE 105.03 222.031 245.000 40406 0.000 0.008 0.0
DRAWDOWN WET POND BASE 106.03 222.031 245.000 40406 0.000 0.008 0.0
DRAWDOWN WET POND BASE 107.03 222.030 245.000 40405 0.000 0.008 0.0
DRAWDOWN WET POND BASE 108.03 222.029 245.000 40405 0.000 0.007 0.0
DRAWDOWN WET POND BASE 109.03 222.029 245.000 40405 0.000 0.007 0.0
DRAWDOWN WET POND BASE 110.03 222.028 245.000 40404 0.000 0.007 0.0
DRAWDOWN WET POND BASE 111.03 222.027 245.000 40404 0.000 0.007 0.0
' DRAWDOWN
DRAWDOWN WET
WET POND
POND BASE
BASE 112.03
113.03 222.027
222.026 245.000
245.000 90404
40403 0.000
0.000 0.006
0.006 0.0
0.0
DRAWDOWN WET POND BASE 114.03 222.026 245.000 40403 0.000 0.006 0.0
DRAWDOWN WET POND BASE 115.03 222.025 245.000 40403 0.000 0.006 0.0
DRAWDOWN WET POND BASE 116.03 222.025 245.000 40403 0.000 0.006 0.0
DRAWDOWN WET POND BASE 117.03 222.024 245.000 40402 0.000 0.006 0.0
' DRAWDOWN WET POND BASE 118.03 222.024 245.000 40402 0.000 0.005 0.0
DRAWDOWN WET POND BASE 119.03 222.023 245.000 40402 0.000 0.005 0.0
DRAWDOWN WET POND BASE 120.01 222.023 245.000 40401 0.000 0.005 0.0

1
1

1
Interconnected Channel and Pond Routing Model (ICPR) ©2002 Streamline Technologies, Inc. Page 2 of 2

i

0
0
1
CONTROL STRUCTURE DESIGN
(WATER QUALITY ORIFICE)
STORMWATER MANAGEMENT CALCULATIONS
Wal-Mart -Raleigh SE (Sunnybrook)

' POST-DEVELOPMENT INPUT: CONTROL STURCUTER DESIGN (WATER QUALITY ORIFICE)
1
1
1
1
1
1
1
1
Name: CS-WET POND From Node: WET POND
Group: BASE To Node: OUTFACE-1
UPSTREAM DOWNSTREAM
Geometry: Circular Circular
Span(in): 30.00 30.00
Rise(in): 30.00 30.00
Invert(ft): 219.000 216.000
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
Length(ft): 140.00
Count: 1
Friction Equation: Average Conveyance
Solution Algorithm: Automatic
Flow: Both
Entrance Loss Coef: 0.500
Exit Loss Coef: 0.500
Outlet Ctrl Spec: Use do or tw
Inlet Ctrl Spec: Use do
r
Count: 1
Type: Vertical: Mavis
Flow: Both
Geometry: Rectangular
Spanlin): 5.50
Rise(in): 2.50
Bottom Clip(in): 0.000
Top Clip(in): 0.000
Weir Disc Coef: 3.200
Orifice Disc Coef: 0.600
Invert(ft): 222.000
Control Elev(ft): 222.000
TABLE
*** Weir 2 of 4 for Drop Structure CS-WET POND ***
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): 20.00 Invert(ft): 224.000
Rise(in): 8.00 Control Elev(ft): 224.000
*** Weir 3 of 9 for Drop Structure CS-WET POND ***
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): 24.00 Invert(ft): 226.500
Rise(in): 10.00 Control Elev(ft): 226.500
*** Weir 4 of 4 for Drop Structure CS-WET POND ***
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): 46.00 Invert(ft): 228.500
Rise(in): 48.00 Control Elev(ft): 228.500
' Interconnected Channel and Pond Routing Model (ICPR) ©2002 Streamline Technologies, Inc.
~a'rCr Quc '~
O~ ~11Gei
Page 1 of 1

CONTROL STRUCTURE DETAIL
STORMWATER MANAGEMENT CALCULATIONS
Thal-Mart -Raleigh SE (Sunnybrook)

1
1
1
1
1
1
1
1
1
1
1
1
1
P \015476
sE cs
4'-0°
GRATE ELE
CONTROL STI
4' X 4' PRECA
DRAINAGE ST
W
6'-0"
ORIFICE ELEVATION
STEEL GRATE USF
#6615 OR APPROVED
EQUAL
10" ORIFICE (2)
LEV. = 225.00
8" ORIFICE (2)
LEV. = 224.00
2.5" ORIFICE
LEV. = 222.00
SLUICE GATE FOR
'ERMANENT POOL DRAWDOWN
PIPE
I.00
JRED INVERT TO
=VENT STANDING WATER
_ RISER BOTTOM
(INVERT OUTFACE PIPE)
=~ WAL-MAR~T447POORCENTER CONTROL STRUCTURE FIGURE
Kmley-Homandnssociates,inc. RALEIGH, NC DETAIL g
THIS DOCUMENT, TOGETHER WRH THE CONCEPTS AND DESIGNS PRESENTED HEREIN, AS AN INSTRUMENT OF SERVICE, IS INTENDED ONLY FOR THE PURPOSE AND CLIENT FOR WHICH IT WAS PREPARED. REUSE
OF AND IMPROPER RELIANCE ON THIS DOCUMENT WITHOUT WRITTEN AUTHORIZATION AND ADAPTATION BV KIMLEV-HORN ANO ASSOCIATES. INC. SHALL BE WITHOUT l1ABILltt TO KIMLEY-HORN AND ASSOCIATES, INC.

EXTENDED DETENTION WETLAND
CROSS SECTION
1
1

STORMWATER MANAGEMENT CALCULATIONS
' Wal-Mart -Raleigh SE (Sunnybrook)

1
1
1
1
1
1
1
1
1
1
1
1

P~~\015476
SE
z
a
a
C7 Q
Z
~ ~ if]
Z¢
Q
J ~
0_ _
O ~
Z
Q Z
O (,
Z Z
O ~
Q Q
~ ~
(? (7
~ ~
Z w
J_
J Q
H N
W W
~ O
No
W
W
!n O W
N J
II p W
~O
} N ~ Q a
II j ¢ ~p
_J (nW ~i Yom.
a W w O W W !n
a ~
`^o,~m ~
pci w 3~~
aW~m wpO
m
W
O
a
0
f-
J F-
O W
~ W
~x
z cn
0
V~
f-_
w~
~ J
~ ~
w
wo
wW
~~
H-
U
U7 ~
w ~
it
Q
>
structur e. awg
w
d
o_

o w
Z J
~
~ ~
~
D! ~
~ \:

Z
~ ~
~_ \'
X ~~.
w ~
- -I

I -
I 1 -

O
a
J
O
O
= a
~ d
I
I > g
I ~
~ a
II II II II II
WO
J ~
H D_
~ ~
~ ~
2 fn ,..~ U_
N W N ~
D_ ~
~ > O
CO O
S 1=
\ Q
3>
OW
J W
(~
z
Q
J
W O O 00 0 OI.,~ r7 ~
DJ O O O r7
OMN ~~N~~~Q~
Z N II N N N N N N
N N N
~ II IIF-II II IIN II II
z z W ~ _I J w J J J
~mw~Opow=i=
W
p W Q Q~g-~~~}
D O!L N~[LON~O
F- N m
Z
W
I-
X
W
z
0
F-
U
W
c/')
J
Q
U
f-
W 1-- fn
~o¢w
"a z

-
I ~J
a W~ ~
H li
W
N Q `
~
-' ~
~
~ w
O
QZNCO
W

°N ___
~~
~I
.
J Y
O
`` °~J

~ I~

_ Q
U
~ ~ W
if7 m I I- _-~ (n~O W ZH O ~J
O
O
~ wQ
w O
~ O~
m Z0_ Z= QF.
~QZOaN zap
~ o ~
iL ,,,
W
~ O
-
y ~Q~Z
~W
W~JF- O
> D! W Z
W
D_ Q
W

=~ RCENTER
WAL-MAR
T
44
P
E EXTENDED DETENTION
~
~
7
O
O
ETLAND CROSS SECTION
Kimley-Homandnssociates,lnc. RALEIGH, NC
THIS DOCUMEM, TOGETHER WI7H THE CONCEPTS AND DESIGNS PRESENTED HEREIN. AS AN INSTRUMENT OF SERJICE IS INTENDED ONLY FOR 7HE PURPOSE AND CLIENT FOR WHICH R WAS PREPARED. REUSE
OF AND IMPROPER RELLANCE ON THIS DOCUMENT WfiHOUi WRITTEN AUTHORIZATION AND ADAPTATION BY KIMLEY-HORN AND ASSOCIATES, INC. SHALL BE WfTHOUT LIABILITY TO KIMLEY-HORN AND ASSOCIATES, INC.
FIGURE
10

1
1
1
1
WATER QUANTITY CALCULATIONS
STORMWATER MANAGEMENT CALCULATIONS
Wal-Mart -Raleigh SE (Sunnybrook)

1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1

7

C
~ W

Q. ~
0 w

d 7
0 O
_
~
~ fV W

L O
O N
~ ~
Ch
Q. ~ M

Z N N
L m m m
O 0 ~ ~
.
~
(O
~ Cfl
O ~
O
ti ~
~~
0

I

d ~ >`>+T
~ L L L

c Z ~ ~ N ~

E `-O _ o c
O v d ~ > >
~
E
Y= ~ Y
w

d
~ .o
a
a
1

d ~ N # ; s
~ ~
u Z Z i
p ,
a
.'
~ '
'
o
0.' C ~n
to ~
N
O ~
~'`~ ~
1' i w i ~ ~ ~ N ~ ~
~ (0 ~ _
~ ~ O ~ 1
a
V
w-.
w
++ ~ t1~ O ~ c0 j
d1 } ~ ~ ~ ~ ~ ~ ~ ~ F

Q U
N d v
M
N
N
N
O
d Q
~

m C
O

p O ~ *
O
R O
O O
~ ~
~ O
O oO0
d C
~ U ~ ~ O ~ ~ ~ r
~" C r r
O
U
d

7
%-~
Z Z N
~ O
tp
~ ~
CD N
~ N
O
~ U rn ~ ti cfl r~
Z

U
ca r O M
v
Q `UO' ~ i i ~ N N O

~ C ~ O M O CMO
~ ~ w ~ ~ O ~ ~ O
~ Y U
t- c0 ~'' N
~
O
~ ~`'~
~
a~
a
w
O
~ ~ ~

N

~
'

~

O
w
U ~ ~ ~ M r
N f6 v M N N N
N
_
C ~
d
E ~
a o
O '~'
O ~ #
~ ~ C v ~ ~ ~ ~ O 00
d E U F ~ N ~ to ~
D v
E-- O
d
` O
v
a

a~
7
%~
U Cp N
M O
~ M
` Lf)
o
~ m c
O c
o c
o
`/
U

N V
U
M
1
~
M r
M N
r
`' ~
Q M
fh N
~ ~
N ~
N ~
op
J
,p ~
L Q
p t t
d d Q LO `-' N C~7 ~ O
~
Q ~ ~ D D
~ 'a 0
~ ~
0
~ r
i
6
2
u

a

5
u
7 >+
u_ °~
~ U
u a
'
u \

O
r
C
(6
\°
O
N
d
f6
c
E
a~
O M

~ c
a ~
d ~
a
a
-0 0
c
ca >
a~
O
N
~
N
O Oa .a
C
tp ~
N > O W
X
y ~ C
N O
N
~ ~
~ ° a
o_ c O ~
N ~ >
a ~ m ~
~
N ~ 'O ~
N ~
L O
O
~ Q
f6 ~ C
N
N ~
>j U
~.
m a ~ ~
a~ U
~
~
O ~ _
Y
~ ~
O y C O
O L ~ >
N } L
rn E ~ E
O ~ r c

o ~n r- -a o
a ~ ~ 3
~
--
_ ~ 0 ~ ~ W
C ~ O ~' N

O N L
m
w ~
L ~.
~.yy
LL
L O '
N O
U
~ U ~}
O
C ~ C y
O t6 O
~ m m °~ >
U

N C Q ~
~
a~ ~
_
N U ~ C d ~
U
~ ~
~ a~
~
Z o Q °- c6
~
a> dQs~
~ S
D ~ *
~
E- ~
. x
U
....
x t e • s v

[]

r.

n

TIME OF CONCENTRATION
CALCULATIONS
STORMA'ATER MANAGEMENT CALCULATIONS
Wal-Mart -Raleigh SE (Sunrrybrook)

i
' w
~. c
n< c
o m
~ ~o
U
a° °
vi E
a`
f
8~
^m
•
u
--1
I
I,
I
O
O
c~
m m 0
N N W
W p p O
V)
m
U
Z ~p
O
am
'm r
m
K
O O
O
O
d
m
m ii 1. ~. >.
E ~ a a c
7- 0 m m m
_ O C y
U a y > >
o = Om K ~
cal
O
E
W
c
0
a`

m:
E
d
N
m
O
rn
O
~
m
r
d
a
~
M
O

t')
~
d
N
rn
m
m
~n
m N
O ~
~
o
O
o
O
m
t7
d
l~'J
m
O e
m
~ 'E
i v
F m m 0 N ~ ~ ~ t7 m H O) N O Ali 0 ~ m Ifl 1~ m 0 ~

m>

o, >; ;
.

O n

c
E n

c
E

O e

c
E n

c
E

I n

c
E
.~
f0 ..
y ~ j I ~
n of O~
ni F ~ H ~ ~
~ N
< F F N F
Q m V C C C C C
> 0
m 0
n 0
m 0
m 0
m

U `

V
a~

~

I

N

O

o c
O
U
O
U

o c
O
U
O
U

I

d

i ~
p o c
b
U
O
U c
CI
U
O
U

m

o c
O
U
0
U
a s
_~ o
o O
m O
0 O
N o
m
E E E E E

a H F ~ F ~
m m ~_ ~ ~ m m i
-y m .-
.c
a ~ a y N
m m
0 3
' o
m
°
u.r ~ a ~ i o ~ i ~~ I

U Q

`o a
m
°ma i ~ i > > > ~ ~ ,
a~
`c
i. m ~.
~
~
I
I
(°O
I
m
i
I
3 a
s ~ ~ ~ ~ m
~~
~~
~~m
-C L U
c m~
m
r
o

1
~
0
o

O
c

~
c
m
~
o

~

G
o

O p
., c o

c

f

o
~ ~° U

~_

~
n
G

c
r
0
o
O~
0
e
N
0
o
m
0
c
d
O
o

O
o
{G
O
N
O
d
V
0
o
~
0
0
m O
00
0 o
b
O
c
m
0
o
m
0
0
J
L

O

~

^

m
a

m

O

~

n

m

O

~

~

m m

O

m

Cf
3

o m
~ m
8 m
8 m
8 m
~ m
.~s m
~ m
~ m
B m
3 m
Fs m
E E g E E E E E E E a _
E `~
` E m $
a ~
`° ao y
m o a
€
~ H
~ ao ~
Q, g ~
p1 c N
~ ~
a$ ~
rn o a
€ ~ o
W o 0 ~
p
~ o ~,
rn° a
p a U y(7 y ~C9 a(7 mU m~ ~U mU aU m dU rq ,+
,
mU ~~ m
`m ~ ~ m 3 ~ ~ ~ 3 ~ ~ m ~ 3
p
U t
2
m L
'
m`
2
m L
'
m` L
2
m L
2
m L
2
m L
2
m
'
m` L
2
m t
2
m y

m`

ti an

3 "' d

tl

3 m

ti 0

3
5 a

.y

.. m

3~

tl
a a
.tl

~

..

3 m

~

` d o} .
m -O
~ m ~ ~ _ d ~ c m - - t A' 'm
O
G
m m m
N c O
'~ ~
e
N ~
~
m ~
y ~
m
to
y o ~
m e
m c
m
N c
N c
m

F ~j U ~j U U U U U U U ~j U
0 C
m U
a A
r
b
r
L N

b ~

L d

L
y~ F O O O O O
W
a
O
N m
E W
> a m N
o m
0 q
0
Z 0, D O
3 u
,
a
O
a
m
c
U
w
~e
`c a
3 '~
0 r°o
LL
O o J
b
U
a
O ~
L 3 _tl
mmc ~
c $ m t
c U
m O m C
m 0
¢ ~ '_ ,o
~ ~~ ~
`ma_~s
m ~ O
4 ~ ~ o
s ~ ~ ~
~ ~ ~ o
o~rL
~ E o m
LL a `
. r
N
O

1
i
W
T C
of O
W
O d
3 C
~ U
N
a° °
ni E
I~ V
a
I'
I'
I'
~$
~r-~
Iii
{
~~
O
N
m
m m m
lY A A
W p p p
N
L
m
U
z ,p
t °
~o
m
m r
m v
0! ~
O O
O
Q
v
u
3 g
E ~ ° a a
Z o ~ 0 am
~ a ~ ~ N
O_ = Q ~ ~
paY
E
O
C
u
d
a`
f
m :
E•
C
O
O
O
O
<
N
~O
O
O
1~
~
O
O
m
~
O
N
N
O
m
N
M
O
N
~
X
0
O
0
O
CD
t~
<
M
m
O
m
~ .E
... vi Yi of fo 0 o e tD of vi o ~ o ~ vi vi co o
F

m~ Y
C tl
C N
C Y
C Y
C
o~_:
`` m E
i ~ $ „
N E
I E E
t E
~ O~ C- ~ N F ~ F f N F
a j v C
O
W C
O
` C
O
` C
O
W C
O

U .rw...
~~
c~
T p C

C
U

O

I

~

I

~
o C

C
U

O

I

O

A
ry

N
o C

O
U

O C

O
U

O

I

~

~
o C

O
U

O
_~ E E E E E

a F ~ ~ ~ H
m m ~
m m~
I
I
i ~
„ N N
I
> C
a N
m m
o` 3
- o
U
ino= ~ ; ~ ~ i i ^ ~ ~ ~ ~
om
U
G a
a~
m
m~
i. ~ G ~ I I I I I O

F~o_ i
.j
N
m C
m
'c ?~
c

i
.n
o

c

c

I
~
o

c
~
o

I
eo
o
m
~ ~ o
U
~_
m
2
O
O
0
O
0
O
O
O
O
O
'O
O
O
O
O
O
O
0
O
0
O
O
O
O
O
O
J
L
W=
J~

C

N

O

~

b

O
b

O
r

p•)

~

00

m
~

0
at
LL

c m
8
S m
B m
8 m
?3 m
sS m
TS
S m
TJ
n a g E E E E a E ~ N E m
'
'
z
u
m ie a
mOO m
m c
4'0 a
€ ~
` a
°j OO m a
°o m a
o'o° m p
°io a
E ~
m o
°'0 p`
€ A a
9'0° m
m
m a
4j OO a
E
`
p m~ °m~ m °m~ m~ °m~ mo rn ma y d~ me in
m 3 3 ~ ~ ~ ~ S m ~ ~ ~
U r
m r
m
m` s
m
~
m` z
m z
m r
m
3

LL

0 a a

S 'o

O
m
.tl v

J ~

=

O a

` m
m ~ ~~ O~
° m
m S
c
c m
m S
c c N
o
2
V7 A m
~ O c
A m a
i
y" c
m
N m ar
y o ~
m
m
A
N
N u c
w
F ~j U ~j U U U U U ~j U
~ C
O .- r N N Q
Q ~ ~ ~ ~ b b
rn~ Z O O O O O
f
a
O
J
L Qf ~ Q m N

~ M

O
Y
O
Z ~ ~ ~
a
3
LL
tl
O
U
`o
Q
w
~o
a
~ ~ o
3 n
0
tL O
~ O J
5
U
U
LL
O a
n .y
N N m m
~ C C
3 m
10 ~ r U
N ~i (/) a
N m O ~
~ O ~ O
~ ~~
'm
n - - b
> > m
3 ~ ~ o
a ~ U
N
rb ~ f
O ~
i o ° y
U li LL
. ~
N
0
N

PRE VS. POST CURVE
NUMBER CALCULATIONS
'~J

STORMWATER MANAGEMENT CALCULATIONS
Wal-Mart -Raleigh SE (Sunnybrook)

t Z .r
U
O
a OZ
~ a`U
N
O
V ~
b = 2
pU
r
a
~
oz
o n
c m
~
z; o
H
_m

g
e U ~ ~
a ~ c4
i $,
m E
d o
N m m m
0~0
n
¢ E
U
?m
tg ?
-
y
~ ~ c~
~~
_ 3a
3
E~°aa
za~~°m
o=gzrc o8'
o p Y u
a

~ "u
$Z
_
6 0
~ ~
~ i ~ ~ I I i a i m i i m
y
^. o
~i ~i ~i '~'~ m ~i

U
U
U
U
U
U
m
1 I
m
U
U

~
~
g3
E
~
3
~
~
~
3
E
~
m
~
~~
~
E
~ i
m
€ ~

~

~
§
E
~
~
~
~
.~
a
'?LL s ~?LL a LL ~LL ~LL ~LL ~LL r;LL LL ~LL m LLj A .... ~ ~ ~LL ~ ~ ..
t $ t
m $ O t
2 ~ e
m $ _ $ t
m y
2S ~ t
~ o , $ c
m ~° o

~ ~ U t ~ SS U U
~
~
g 5
s
g $
g o'
~m
~$a $
J~
g o
m
'~~o' 'I

I . 6
~ 5
~
a- $
g o'
~~o $
g o
~m
8$° S
~
g b
~
g g$o'

~~
o g$o
~m
~$o' g$o'
c;m
-$o
~' F
~
< ~
~
q g o
~cim
`3$0 c~ o'
~~m
'3$3
~ ~ ~N ~' g
~ ~ a~ ~~ a a q
ir a~ 3~ ~ ~ ~m ~~
~ a~ ~~ ~ a8 a2 ° ~$ a8 as ~ ~ a$ ~$

0 0' o' o
1 o'

0
m
0
~

0 _
.
~,~
0l
d

o
C
1
~ry
~a
~~
n~
s
` E
LL

a
rz~
U
o
~ `m
pyZ
~ 6U
M 2 I
i.
m m
C E
Q
7 ~
~ o
~
~ 3 o
n
m ~
m U ~+
a°~ ~
ro o
> a
E
y o
m m m
U w
L
m ~ - -
OHO
c
~°
V
z~ E
Z
a

~~ 3
$ _ ~~
f
~
B
m 3a
3
zo~~8 ~s
¢rc o
`oa=a
- Y °
~
~
- m
mE
_
0
d c Z
0

~ ~ m
`~i a
U U U U U U
~
E m
4
. Y

E ~

E _m
. m
k
' Y

E
n ~

LL .
m
§
~ W
Gi'd
&LL ~
m iE
~ LL E
m'~
~ LL ~
~
$LL
'~

4
m m '~

LL n 'a

~ LL Yu i`6

~ LL ~

a E
ym ~
&LL 3
$
m E
@ ~
LL ~
U .~
~LL
U' @ ~
ELL U ,~
~LL
('~
m

~
fi L

t R
tl
3
t
~ (4
iS
3
o
2 (n
if
3
~
o ;

m
o
t
y
3 ;
m
y
; C
o
S 5 gf $~ S ~ $~ $~ S g 8~ $~
'
~
~ ~
~~ o'
oG... go'
~$ti ~
~ ~ a~o
"
U ko
~$U ~
~' m
~ .g'~
$$U €'o
$$U
O
8 ~
~ f
~ g$U
`d~O gUm
`d$O E
g f
a $
~Um
~'$° °`"~
~o ~
g ~
g °Um
cago' ~UU
`~~~ ~
~
~ ~ ~ ~~
~N 8`
~r ~
8 ~
§ W$V
~« 3
~n ~
a ~ W$
~r J~
~«
~ ~ ~~d 38 " ~ ~$ 33 " `~ 3$ ~$

n -
', 3
a
~ m
O H

p m

o a

O
.e
fr
¢a
~=
_`o~
~f
~ E
~u

~J
1

ii
1

1
[I

1

STORMWATER SCHEMATIC DIAGRAM
STORMWATER MANAGEMENT CALCULATIONS
Wal-Mart -Raleigh SE (Sunnybrook)

a

~ w
w ~

~ ~
o a
F ~
Q£
a ~

H
Q
~..... ....._....
...-
U
H
F

W
x :
u

~
w
F ~
a
a
H
o w
F ~
N
E ~
'
2
W ...._..._. ___.. ..;

a
0

w
~i
a
w
a
a
.-1 N

1
1 M d~
1 I

M
~ E I E
FC 7
~. ~ ~ ~
o q o iQ o Q o Q
FC ~ F 'D F a F D
3 ~ rt u
gNg o 'd, rt .~i
~ 7~ W x A 7 7
y' ',~ L d 4' -.1 (n .-1 L U
N N E O rl a N f. tT C U
mmmeq gv~na Ana-~+mo-.~l,v
U/ L i! •H rtf -N ',~ U N X -.i O) .. LI YI N la
roCnu7F£ mOV~rn ga3ULl W LL; W
z r.~>F~ W OD~1 aa3UAOgxx
ti
C
.~
0
O
U
N
H
Li
.~
.,
C/~
N
O
O
N
U
.~
O
by
Q
.y
O
L~.
b
G'
O
a
U
b
~~+
U
O

1
1
1
1
1
1
1
1
1
1
1
1
1
1
1

a

~ m
w ~

Q
o
E ~
A
z
a
~+

h 3
w a
3 a
I H
~ a
U u]
A 3

z N M ~
'
a a a
a ~ ~ a~ a
~
C*~
N
W
M w ~

~ A O IA O A O A
FC D E-~ a E~ D E., p
W
a
a
0
E

w oro w ~
ro
~
W S A ro
7
O N
bl 7

N ro ~
W N N
O ,
i P ro tr~ G U
C
Q tP iT Ol ,C Ul H N N H C R~'O •.i ro
i m rorot;a g a7mq m o,~.~roo~.~id
m m ~ itl
om C ~
am
a3uA
'O m
F£ r
n u
i a
a
a ° w a
z a>FE opm a3ugwxx
ti
>;
vi
.~
0
0
U
H
.C
~~.
v]
N
O
O
N
W
~--~
a~
v
0
C
.~
O
a
,~"
U
'C
:3
U
N
O
tV.
A
r-~

ii

D
u

ii
n
n

r

PRE-DEVELOPMENT HYDROLOGY
' STORMWATER MANAGEMENT CALCULATIONS
Wal-Mart -Raleigh SE (Sunnybrook)

PRE-DEVELOPMENT HYDROLOGY: INDIVIDUAL BASIN SUMMARY - 2 YR STORM EVENT
Basin Name: DA-2
Group Name: BASE
Simulation: 002Y024H
Node Name: OUTFACE-2
Basin Type: SCS Unit Hydrograph
Unit Hydrograph: Uh484
Peaking Fator: 484.0
Spec Time Inc (min): 2.35
Comp Time Inc (min): 2.35
Rainfall File: Scsii-24
Rainfall Amount (in): 3.700
Storm Duration (hrs): 24.00
Status: Onsite
Time of Conc (min): 17.65
Time Shift (hrs): 0.00
Area (ac): 17.480
Vol of Unit Hyd (in): 1.000
Curve Number: 72.900
DCIA (~): 0.000
Time Max (hrs): 12.08
Flow Max (cfs): 25.178
Runoff Volume (in):~307
Runoff Volume (ft3): 82946.162
Basin Name: DA-3
Group Name: BASE
Simulation: 002Y024H
Node Name: OUTFACE-3
Basin Type: SCS Unit Hydrograph
Unit Hydrograph: Uh484
Peaking Fator: 484.0
Spec Time Inc (min): 0.67
Comp Time Inc (min): 0.67
Rainfall File: Scsii-24
Rainfall Amount (in): 3.700
Storm Duration (hrs): 24.00
Status: Onsite
Time of Conc (min): 5.00
Time Shift (hrs): 0.00
Area (ac): 2.300
Vol of Unit Hyd (in): 1.000
Curve Number: 61.300
DCIA ($): 0.000
Time Max (hrs): 12.01
Flow Max (cfs): 2~6
Runoff Volume (in): 0.678
Runoff Volume (ft3): 5660.482
Basin Name: DA-4
Group Name: BASE
' Simulation: 002Y024H
Node Name: OUTFACE-4
Basin Type: SCS Unit Hydrograph
Unit Hydrograph: Uh484
' Peaking Fator: 484.0
Spec Time Inc (min): 1.84
Comp Time Inc (min): 1.84
Rainfall File: Scsii-24
Rainfall Amount (in): 3.700
Storm Duration (hrs): 24.00
' Status: Onsite
Time of Conc (min): 13.80
Time Shift (hrs): 0.00
Area (ac): 21.310
Vol of Unit Hyd (in): 1.000
' Curve Number: 69.500
DCIA (8): 0.000
Time Max (hrs): 12.05
Flow Max (cfs): 2~"10g
' Runoff Volume (in): 1.103
Runoff Volume (ft3): 85307.989
~I J
Interconnected Channel and Pond Routing Model (ICPR) ©2002 Streamline Technologies, Inc.
Page 1 of 1

1
1
1
1
1
1
1
1
1
1
1
1
1
1
H
z
w
~w
F
P'.
N
I
R.'
z
H
PO
a
Q
H
H
Q
z
H
C~
O
a
O
a
Q
x
z
W
a
0
a
W
W
Q
W
a
a
N M V
Q Q Q
DDD
I

/'^
_ I
`~
~
o ~
4

x
N
O
N
0
0
r
R
7
o ~n o u~ o ~n
(7 N N .'- ~
~S~O~MO~~
O
r7
N
O
N
M
r
O

0
0
y
L
m
t-
ti
Q
v~
.~
0
U
N
H
.~
N
t..
N
0
0
N
a
a
U
~,
v
-o
0
do
Q
.~
O
~i
a
0
p.,
a
U
b
a~
U
N
O

L~
u
PRE-DEVELOPMENT HYDROLOGY: INDIVIDUAL BASZN SUMMARY - 15 YR STORM EVENT
Basin Name: DA-2
Group Name: BASE
Simulation: O15Y024H
Node Name: OUTFACE-2
Basin Type: SCS Unit Hydrograph
Unit Hydrograph: Uh484
Peaking Fator: 484.0
Spec Time Inc (min): 2.35
Comp Time Inc (min): 2.35
Rainfall File: Scsii-24
Rainfall Amount (in): 6.040
Storm Duration (hrs): 24.00
Status: Onsite
Time of Conc (min): 17.65
Time Shift (hrs): 0.00
Area (ac): 17.480
Vol of Unit Hyd (in): 1.000
Curve Number: 72.900
DCIA ($): 0.000
Time Max (hrs): 12.08
Flow Max (cfs): 61.4
Runoff Volume (in): 3.107
Runoff Volume (ft3): 197118.704
Basin Name: DA-3
Group Name: BASE
Simulation: O15Y024H
Node Name: OUTFACE-3
Basin Type: SCS Unit Hydrograph
Unit Hydrograph: Uh484
Peaking Fator: 484.0
Spec Time Inc (min): 0.67
Comp Time Inc (min): 0.67
Rainfall File: Scsii-24
Rainfall Amount (in): 6.040
Storm Duration (hrs): 24.00
Status: Onsite
Time of Conc (min): 5.00
Time Shift (hrs): 0.00
Area (ac): 2.300
Vol of Unit Hyd (in): 1.000
Curve Number: 61.300
DCIA ($): 0.000
Time Max (hrs): 12.01
Flow Max (cfs): 7.438
Runoff Volume (in): 2.055
Runoff Volume (ft3): 17158.301
Basin Name:
Group Name: DA-4
BASE
Simulation: O15Y024H
Node Name: OUTFACE-4
Basin Type: SCS Unit Hydrograph
Unit Hydrograph: Uh484
Peaking Fator: 484.0
Spec Time Inc (min): 1.84
Comp Time Inc (min): 1.84
Rainfall File: Scsii-24
Rainfall Amount (in):
Storm Duration (hrs): 6.040
24.00
Status: Onsite
Time of Conc (min): 13.80
Time Shift (hrs): 0.00
Area (ac): 21.310
Vol of Unit Hyd (in): 1.000
' Curve Number: 69.500
DCIA ($): 0.000
Time Max (hrs): 12.05
Flow Max (cfs): 73.863
Runoff Volume (in): 2.76T~
Runoff Volume (ft3): 215496.928
1
Interconnected Channel and Pond Routing Model (ICPR) ©2002 Streamline Technologies, Inc.
Page 1 of 1
C

1
1
1
E
z
w
N
Ra'
LC1
r-i
~Qqi!
7-~
z =
H N
U1 ~
}
~ ~
''~ O
Qo
~~
H ~
z ~
H N
C7
O
a
O
a
Q
x
H
z
w
a
0
a
w
w
Q
w
a
a
Nc~c7
Q Q Q
~ D ~
I ~ I

o ~
Q L

O
O
~ N

O
C7
N
O
N
i
t
N
~~
O

0
0
U
Q
y
N
.~
0
0
U
N
H
c0
N
N
0
0
N
a
U
a~
b
0
on
.~
a
b
0
a
U
b
°3
U
N
C."
O
H
w

1
1
1
1
1
1
1
1
1
1

1
X 3 m
b o w
~ ~ U
w
O
v 3 N
E os,
-.~ ,-i A
H w
L
~ O
X 3~n
£ rl U
z
w
w
p E o~
E. E w
N X ri
5 ~
a
N w b N
la U) L
~ N ~ w
N b
m
F rowu
P ~ b w
a Q N
X
2 ~
H
o G b w
x sCim
w 3
a
W ~ b w
y
A ~
w
ai
a
m .c
F ~
X
ro
C
0
.~
m
ri
a
.~
0
0
0
0
0
0
0
~I
m
to
O
0
0
0
0
0
0
N
N
0
0
H
x
N
~I
N
a w
7 U1
o a
s, w
ca
E
m
z
a
a
a
w
E
D
O
w
0
on
a
U
C.'
vi
a>
.~
O
pO
U
N
.~
c~
4.
.~
N
O
O
N
O
b
O
op
~i
.Y
~~/
W
rr
0
a
b
a>
U
'C3
~+
U
N
O
a>
Q

h
z
w
w
~w
0
N
x
x
N
N
H
W
a
z
H
H
O
a
F
z
W
a
0
a
w
w
Q
W
a
a
3
0
c
J
J
Q
0
I
L
'Cr
N
L
N
C
O
~.
R

(`')
O
M
N
h
O v
N
~_
H
0
T
u~
0
~ o ~n o ~ o ~ o
(7 (`') N N
(s~~)nno~n0/MOI~~I
U
.~
.~.
O
0
U
N
H
.~
c~
N
0
0
N
~.
a
c.>
\J
b
0
.~
0
a;
b
0
a
b
a~
U
b
~U"
F
O
U
i-i
N

1
1
1

X 3 ro
ro ow
£ .+ u
w
7
O
v 3 m
E o N
•~~~
E ~
O
X 3 m
roow
£ ~ U
E w
W H
w
v 3 m
O ~ ~ A
~ E ~
~ b H
x z
N W ro N
S-i W L
~+ V7 a w
~ X
~ ro
F y b~ w
a ,~ ro
N Am
w
a X
c~ ~
z
a c m "'
°a wm
F g
E
w x ~ ,+
O ro ~w
w z ro
~ L
N
~m~
F i
k ~
ro
c
0
.N
w
ro
N
7
E

a
7
0
0
E
z
0
0
0
0
0
0
0
r
O
N
e-1
O
0
0
0
0
0
0
N
N
0
x
N
Sa
w
a
w
a
a
w
F
a
O
0
ao
Q.
Q
vi
.~
0
O
a>
H
w
N
0
N
fYi
U
.~
'C
0
OD
~r
.Y
7
~i
0
a
'~
U
'C
w?
U
~N
F~"
O
L"

1
1
1
1

H
W
~Wy+
W
h
x
d~
N
~'
u,
H
a
w
~i
z
H
H
P.'
F
z
W
a
0
a
w
w
Q
w
x
a
3
0
c
c
J
J
Q
LL
F-
I
L
s
N
L
T
r
ca
C3
G
O O O O
O N CO R
~S~~)MOlb~nO/MOl~ul
0
N
Ch
O
C7
u7
N
y
O L
N v
E
H
0

J O
ti
N
.~
0
U
F.,
.c
R
w
N
0
0
a,
-b
0
ion
a
~Y
~~/
W
^^O
~Y
b
Q~
U
b
U
N
O
tom,
+~+
S

PRE-DEVELOPMENT ROUTING INPUT
STORMWATER MANAGEMENT CALCULAT70NS
' Wal-Mart -Raleigh SE (Sunnybrook)

PRE-DEVELOPMENT INPUT: BASINS
Name: DA-lA 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): 19.46
Area(ac): 33.520 Time Shift(hrs): 0.00
Curve Number: 67.60 Max Allowable Q(cfs): 999999.000
DCIA($): 0.00

Name: DA-1B Node: OUTFACE 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): 21.99
Area(ac): 12.370 Time Shift(hrs): 0.00
Curve Number: 63.20 Max Allowable Q(cfs): 999999.000
DCIA($): 0.00
------------------------
Name: DA-2 ------------ ------------------------------
Node: OUTFACE-2 ----------
Status: ------------------------
Onsite
Group: BASE Type: SCS Unit Hydrograph
Unit Hydrograph: Uh484 Peaking Factor: 484.0
Rainfall File: Scsii-24 Storm Duration(hrs): 999.00
Rainfall Amount(in): 999.000 Time of Conc(min): 17.65
Area(ac): 17.480 Time Shift(hrs): 0.00
Curve Number: 72.90 Max Allowable Q(cfs): 999999.000
DCIA($): 0.00
1 ------------------------ ------------ ------------------------------ ---------- ------------------------
Name: DA-3 Node: OUTFACE-3 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): 2.300 Time Shift(hrs): 0.00
Curve Number: 61.30 Max Allowable Q(cfs): 999999.000
DCIA($): 0.00
---
---
------------------------
------------------------
Name: DA-4 ------------ ------------------------------
Node: OUTFACE-4 ---
-
Status: Onsite
Group: BASE Type: SCS Unit Hydrograph
Unit Hydrograph: Uh464 Peaking Factor: 484.0
Rainfall File: Scsii-24 Storm Duration(hrs): 999.00
Rainfall Amount(in): 999.000 Time of Conc(min): 13.80
Area(ac): 21.310 Time Shift(hrs): 0.00
' Curve Number: 69.50 Max Allowable Q(cfs): 999999.000
DCIA($): 0.00

1
1
Interconnected Channel and Pond Routing Model (ICPR) ©2002 Streamline Technologies, Inc.
Page 1 of 1

1
1
1
1
1
1
1
1
1
1
1
1
1
1
PRE-DEVELOPMENT INPUT: NODES
Name: OUTFACE Base Flow(cfs): 0.000 Init Stage(ft): 227.000
Group: BASE Warn Stage(ft): 0.000
Type: Time/Stage
-----Time(hrs) ---- Stage(ft)
0.00 227.000
999.00 227.000
0
Name: OUTFACE-1 Base Flow(cfs): 0.000 Init Stage(ft): 227.000
Group: BASE Warn Stage(ft): 0.000
Type: Stage/Area
Stage(ft) Area(ac)
--------------- ---------------
227.000 0.0011
226.000 0.0178
229.000 0.1031
230.000 0.2482
231.000 0.4201
232.000 0.5576
240.000 0.5576
0
Name: OUTFACE-2 Base Flow(cfs): 0.000 Init Stage(ft): 248.000
Group: BASE Warn Stage(ft): 0.000
Type: Time/Stage
Time(hrs) Stage(ft)
--------------- ---------------
0.00 248.000
999.00 248.000
Name: OUTFACE-3 Base Flow(cfs): 0.000 Init Stage(ft): 234.000
Group: BASE Warn Stage(ft): 0.000
Type: Time/Stage
Time(hrs) Stage(ft)
--------------- ---------------
0.00 234.000
999.00 234.000
Name: OUTFACE-4 Base Flow(cfs): 0.000 Init Stage(ft): 248.000
Group: BASE Warn Stage(ft): 0.000
Type: Time/Stage
---Time(hrs) --Stage(ft)
0.00 248.000
999.00 248.000
Interconnected Channel and Pond Routing Model (ICPR) ©2002 Streamline Technologies, Inc.
Page 1 of 1

s
1
1
PRE-DEVELOPMENT INPUT: SPILLWAYS
Name: SPILLWAY From Node: OUTFACE-1
Group: BASE To Node: OUTFACE
Flow: Both Count: 1
Type: Vertical: Mavis Geometry: Trapezoidal
Bottom Width(ft): 4.00
Left Side Slope(h/v): 0.61
Right Side Slope(h/v): 0.61
Invert(ft): 227.000
Control Elevation(ft): 227.000
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
Interconnected Channel and Pond Routing Model (ICPR) ©2002 Streamline Technologies, Inc.
Page 1 of 1

ii

0

ii

u
POST-DEVELOPMENT HYDROLOGY
STORMWATER MANAGEMENT CALCULATIONS
Wal-Mart -Raleigh SE (Sunnybrook)

' POST-DEVELOPMENT HYDROLOGY: INDIVIDUAL BASIN SUMMARY - 2 YR STORM EVENT
' Basin Name: DA-lA
Group Name: BASE
Simulation: 002YR 24 HR
Node Name: WET POND
Basin Type: SCS Unit Hydrograph
Unit Hydrograph: LTh464
Peaking Fator: 484.0
Spec Time Inc (min): 0.67
Comp Time Inc (min): 0.67
Rainfall File: Scsii-24
Rainfall Amount (in): 3.700
Storm Duration (hrs): 24.00
Status: Onsite
Time of Conc (min): 5.00
Time Shift (hrs): 0.00
Area (ac): 25.970
Vol of Unit Hyd (in): 1.001
Curve Number: 91.200
DCIA ($): 0.000
Time Max (hrs): 12.00
Flow Max (cfs): 99.200
Runoff Volume (in): 2.747
Runoff Volume (ft3): 258928.164
1
1

1

1
Basin Name: DA-1B
Group Name: BASE
Simulation: 002YR 24 HR
Node Name: OUTFACE-1
Basin Type: SCS Unit Hydrograph
Unit Hydrograph: Uh464
Peaking Fator: 484.0
Spec Time Inc (min): 2.21
Comp Time Inc (min): 2.21
Rainfall File: Scsii-24
Rainfall Amount (in): 3.700
Storm Duration (hrs): 24.00
Status: Onsite
Time of Conc (min): 16.60
Time Shift (hrs): 0.00
Area (ac): 25.170
Vol of Unit Hyd (in): 1.000
Curve Number: 66.000
DCIA ($): 0.000
Time Max (hrs): 12.10
Flow Max (cfs): 24.246
Runoff Volume (in): 0.910
Runoff Volume (ft3): 63113.663
Basin Name: DA-2
Group Name: BASE
Simulation: 002YR 24 HR
Node Name: OUTFACE-2
Basin Type: SCS Unit Hydrograph
Unit Hydrograph: Uh484
Peaking Fator: 484.0
Spec Time Inc (min): 2.40
Comp Time Inc (min): 2.40
Rainfall File: Scsii-24
Rainfall Amount (in): 3.700
Storm Duration (hrs): 24.00
Status: Onsite
Time of Conc (min): 17.99
Time Shift (hrs): 0.00
Area (ac): 12.110
Vol of Unit Hyd (in): 1.000
Curve Number: 76.900
DCIA ($): 0.000
Time Max (hrs): 12.07
Flow Max (cfs): 20.951
Runoff Volume (in): 1.571
Runoff Volume (ft3): 69077.452
Interconnected Channel and Pond Routing Model (ICPR) ©2002 Streamline Technologies, Inc. Page 1 of 2

POST-DEVELOPMENT HYDROLOGY: INDIVIDUAL BASIN SUMMARY - 2 YR STORM EVENT

1

1

1
1
1
--------------------------------------------------------------------------------
Basin Name: DA-3
Group Name: BASE
Simulation: 002YR 24 HR
Node Name: OUTFACE-3
Basin Type: SCS Unit Hydrograph
Unit Hydrograph: Uh484
Peaking Fator: 464.0
Spec Time Inc (min): 0.67
Comp Time Inc (min): 0.67
Rainfall File: Scsii-24
Rainfall Amount (in): 3.700
Storm Duration (hrs): 24.00
Status: Onsite
Time of Conc (min): 5.00
Time Shift (hrs): 0.00
Area (ac): 2.300
Vol of Unit Hyd (in): 1.000
Curve Number: 64.200
DCIA ($): 0.000
Time Max (hrs): 12.01
Flow Max (cfs): 2.933
Runoff Volume (in): 0.818
Runoff Volume (ft3): 6825.546
--------------------------------------------------------------------------------
Basin Name: DA-4
Group Name: BASE
Simulation: 002YR 24 HR
Node Name: OUTFACE-4
Basin Type: SCS Unit Hydrograph
Unit Hydrograph: Uh484
Peaking Fator: 484.0
Spec Time Inc (min): 1.84
Comp Time Inc (min): 1.84
Rainfall File: Scsii-24
Rainfall Amount (in): 3.700
Storm Duration (hrs): 24.00
Status: Onsite
Time of Conc (min): 13.80
Time Shift (hrs): 0.00
Area (ac): 21.430
Vol of Unit Hyd (in): 1.000
Curve Number: 70.200
DCIA ($): 0.000
Time Max (hrs): 12.05
Flow Max (cfs): 29.488
Runoff Volume (in): 1.144
Runoff Volume (ft3): 88958.207
Interconnected Channel and Pond Routing Model (ICPR) ©2002 Streamline Technologies, Inc.
Page 2 of 2

' POST-DEVELOPMENT HYDROLOGY: INDIVIDUAL BASIN SUMMARY - 15 YR STORM EVENT
1

n

n

r

0

1
1
Basin Name: DA-lA
Group Name: BASE
Simulation: O15YR 24 HR
Node Name: WET POND
Basin Type: SCS Unit Hydrograph
Unit Hydrograph: Uh484
Peaking Fator: 484.0
Spec Time Inc (min): 0.67
Comp Time Inc (min): 0.67
Rainfall File: Scsii-24
Rainfall Amount (in): 6.040
Storm Duration (hrs): 24.00
Status: Onsite
Time of Conc (min): 5.00
Time Shift (hrs): 0.00
Area (ac): 25.970
Vol of Unit Hyd (in): 1.001
Curve Number: 91.200
DCIA ($): 0.000
Time Max (hrs): 12.00
Flow Max (cfs): 172.455
Runoff Volume (in): 5.012
Runoff Volume (ft3): 472495.034
Basin Name: DA-1B
Group Name: BASE
Simulation: O15YR 24 HR
Node Name: OUTFACE-1
Basin Type: SCS Unit Hydrograph
Unit Hydrograph: Uh484
Peaking Fator: 484.0
Spec Time Inc (min): 2.21
Comp Time Inc (min): 2.21
Rainfall File: Scsii-24
Rainfall Amount (in): 6.040
Storm Duration (hrs): 24.00
Status: Onsite
Time of Conc (min): 16.60
Time Shift (hrs): 0.00
Area (ac): 25.170
Vol of Unit Hyd (in): 1.000
Curve Number: 66.000
DCIA (~): 0.000
Time Max (hrs): 12.06
Flow Max (cfs): 70.582
Runoff Volume (in): 2.466
Runoff Volume (ft3): 225288.880
Basin Name: DA-2
Group Name: BASE
Simulation: O15YR 24 HR
Node Name: OUTFACE-2
Basin Type: SCS Unit Hydrograph
Unit Hydrograph: Uh484
Peaking Fator: 484.0
Spec Time Inc (min): 2.40
Comp Time Inc (min): 2.40
Rainfall File: Scsii-24
Rainfall Amount (in): 6.040
Storm Duration (hrs): 24.00
Status: Onsite
Time of Conc (min): 17.99
Time Shift (hrs): 0.00
Area (ac): 12.110
Vol of Unit Hyd (in): 1.000
Curve Number: 76.900
DCIA ($): 0.000
Time Max (hrs): 12.07
Flow Max (cfs): 47.092
Runoff Volume (in): 3.499
Runoff Volume (ft3): 153804.009
Interconnected Channel and Pond Routing Model (ICPR) ©2002 Streamline Technologies, Inc.
Page 1 of 2

POST-DEVELOPMENT HYDROLOGY: INDIVIDUAL BASIN SUMMARY - 15 YR STORM EVENT
i

C
1
Basin Name: DA-3
Group Name: BASE
Simulation: O15YR 24 HR
Node Name: OUTFACE-3
Basin Type: SCS Unit Hydrograph
Unit Hydrograph: Uh484
Peaking Fator: 484.0
Spec Time Inc (min): 0.67
Comp Time Inc (min): 0.67
Rainfall File: Scsii-24
Rainfall Amount (in): 6.040
Storm Duration (hrs): 24.00
Status: Onsite
Time of Conc (min): 5.00
Time Shift (hrs): 0.00
Area (ac): 2.300
Vol of Unit Hyd (in): 1.000
Curve Number: 64.200
DCIA ($): 0.000
Time Max (hrs): 12.01
Flow Max (cfs): 8.295
Runoff Volume (in): 2.306
Runoff Volume (ft3): 19256.868
------------------------
Basin Name: --------------------------------------------------------
DA-4
Group Name: BASE
' Simulation: O15YR 24 HR
Node Name: OUTFACE-4
Basin Type: SCS Unit Hydrograph
Unit Hydrograph: Uh484
Peaking Fator: 484.0
Spec Time Inc (min): 1.84
Comp Time Inc (min): 1.84
Rainfall File: Scsii-24
Rainfall Amount (in):
Storm Duration (hrs): 6.040
24.00
' Status: Onsite
Time of Conc (min): 13.80
Time Shift (hrs): 0.00
Area (ac): 21.430
Vol of Unit Hyd (in): 1.000
Curve Number: 70.200
DCIA ($): 0.000
Time Max (hrs): 12.05
Flow Max (cfs): 76.038
Runoff Volume (in): 2.851
Runoff Volume (ft3): 221792.514

Interconnected Channel and Pond Routing Model (ICPR) ©2002 Streamline Technologies, Inc.
Page 2 of 2

POST DEVELOPMENT ROUTING INPUT
' STORMWATER MANAGEMENT CALCULATIONS
Wal-Mart -Raleigh SE (Sunnybrook)

1
i

POST-DEVELOPMENT ROUTING INPUT: ALL
-----Basins ------------ ------------ --------------------------
Name: DA-lA Node: WET POND Status: Onsite
Group: BASE Type: SCS Unit Hydrograph
Unit Hydrograph: LTh489 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): 25.970 Time Shift(hrs): 0.00
Curve Number: 91.20 Max Allowable Q(cfs): 999999.000
DCIA($): 0.00
------------------------
Name: DA-1B ------------ -----------------------------
Node: OUTFACE-1 -----------------------------------
Status: Onsite
Group: BASE Type: SCS Unit Hydrograph
Unit Hydrograph: Uh484 Peaking Factor: 484.0
Rainfall File: Scsii-24 Storm Duration(hrs): 999.00
Rainfall Amount(in): 999.000 Time of Conc(min): 16.60
Area(ac): 25.170 Time Shift(hrs): 0.00
Curve Number: 66.00 Max Allowable Q(cfs): 999999.000
DCIA($): 0.00
------------------------
Name: DA-2 ------------- ----------------------------
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): 17.99
Area(ac): 12.110 Time Shift(hrs): 0.00
' Curve Number: 76.90 Max Allowable Q(cfs): 999999.000
DCIA(8): 0.00
Name: DA-3 Node: OUTFACE-3 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): 2.300 Time Shift(hrs): 0.00
Curve Number: 64.20 Max Allowable Q(cfs): 999999.000
DCIA(8): 0.00
----------------- -----------------------------------
------------------------
Name: DA-4 ------------- -----------
Node: OUTFACE-4 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): 13.80
Area(ac): 21.430 Time Shift(hrs): 0.00
Curve Number: 70.20 Max Allowable Q(cfs): 999999.000
' DCIA(8): 0.00
___= Nodes _____________ _____________ _____ ______________________ _________________________
Name: OUTFACE-1 Base Flow(cfs): 0.000 Init Stage(ft): 215.000
Group: BASE Warn Stage(ft): 999.000
Type: Time/Stage
Time(hrs) Stage(ft)
--------------- ---------------
0.00 215.000
999.00 215.000
Interconnected Channel and Pond Routing Model (ICPR) ©2002 Streamline Technologies, Inc.
Page 1 of 6

POST-DEVELOPMENT ROUTING INPUT: ALL

Name: OUTFACE-2 Base Flow(cfs): 0.000 Init Stage(ft): 248.000
Group: BASE Warn Stage(ft): 999.000
Type: Time/Stage
e(ft)
) Sta
Ti
(h
rs
g
me
---------------
---------------
0.00 248.000
' 999.00 248.000
Name OUTFACE-3 Base Flow(cfs): 0 000 Init Stage(ft): 234.000
Group: BASE Warn Stage(ft): 999.000
Type: Time/Stage
'
Time(hrs) Stage(ft)
-
------------
--------------- -
-
0.00 234.000
' 999.00 234.000
-----------------------------------------------
Name: OUTFACE-4 Base Flow(cfs): --------
0.000 -----------------------------------
Init Stage(ft): 248.000
Group: BASE Warn Stage(ft): 999.000
' Type: Time/Stage
Time(hrs) Stage(ft)
--------------- ---------------
0.00 248.000
999.00 248.000
-----------------------------------------------
Name: WET POND Base Flow(cfs): --------
0.000 -----------------------------------
Init Stage(ft): 222.903
' Group: BASE Warn Stage(ft): 245.000
Type: Stage/Area
' ------Stage(ft) ------ Area(ac)
222.000 0.9272
223.000 0.9399
224.000 0.9519
225.000 0.9633
226.000 0.9742
227.000 0.9843
228.000 0.9939
229.000 1.0029
230.000 1.0112
231.000 1.0191
-------------------------------------------- --
___= Cross Sections ___________________________
--------------------------------------- --
________
--------
___________________________________
-----------
Name: Group: BASE
Encroachment: No
----Station(ft) Elevation(ft) ----Manning's N
---- --------------- --------
---------------------------------- -

___= roP truc ures __________________________

________
______________________________
______
Name: CS-WET POND From Node: WET POND Length(ft): 140.00
Group: BASE To Node: OUTFACE-1 Count: 1
UPSTREAM DOWNSTREAM Friction Equation: Average Conveyance
' Geometry: Circular Circular Solution Algorithm: Automatic
Span(in): 30.00 30.00 Flow: Both
Rise(in): 30.00 30.00 Entrance Loss Coef: 0.500
Invert(ft): 219.000 216.000 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 Solution Incs: 10
Upstream FHWA Inlet Edge Description:
Circular Concrete: Square edge w/ headwall
Interconnected Channel and Pond Routing Model (ICPR) ©2002 Streamline Technologies, Inc. Page 2 of 6

POST-DEVELOPMENT ROUTING INPUT: ALL

1

1

1
Downstream FHWA Inlet Edge Description:
Circular Concrete: Square edge w/ headwall
*** Weir 1 of 4 for Drop Structure CS-WET POND ***
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): 5.50 Invert(ft): 222.000
Rise(in): 2.50 Control Elev(ft): 222.000
*** Weir 2 of 4 for Drop Structure CS-WET POND ***
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): 20.00 Invert(ft): 224.000
Rise(in): 8.00 Control Elev(ft): 224.000
*** Weir 3 of 4 for Drop Structure CS-WET POND ***
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): 24.00 Invert(ft): 226.500
Rise(in): 10.00 Control Elev(ft): 226.500
*** Weir 4 of 4 for Drop Structure CS-WET POND ***
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): 46.00 Invert(ft): 228.500
Rise(in): 48.00 Control Elev(ft): 228.500
=====Weirs
TABLE
TABLE
TABLE
TABLE
Name: SPILLWAY From Node: WET POND
Group: BASE To Node: OUTFACE-1
Flow: Both Count: 1
Type: Vertical: Mavis Geometry: Trapezoidal
Bottom Width(ft): 100.00
Left Side Slope(h/v): 2.50
Right Side Slope(h/v): 2.50
Invert(ft): 228.500
Control Elevation(ft): 228.500
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\046 Raleigh SE (Sunnybrook)\Calcs\Storm\ICPR\002YR 24 HR.R32
Override Defaults: Yes
Storm Duration(hrs): 24.00
Rainfall File: Scsii-24
Rainfall Amount(in): 3.70
Time(hrs) Print Znc(min)
--------------- ---------------
30.000 5.00
Interconnected Channel and Pond Routing Model (ICPR) ©2002 Streamline Technologies, Inc. Page 3 of 6

POST-DEVELOPMENT ROUTING INPUT: ALL

1

----------------------------------------------------------------------------------------------------
Name: OlOYR 24 HR
Filename: P:\015476 Wal-Mart SiteCivil\046 Raleigh SE (Sunnybrook)\Calcs\Storm\ICPR\OlOYR 24 HR.R32
Override Defaults: Yes
Storm Duration(hrs): 24.00
Rainfall File: Scsii-24
Rainfall Amount(in): 5.70
Time(hrs) Print Znc(min)
30.000 5.00
----------------------------------------------------------------------------------------------------
' Name: 015YR 24 HR
Filename: P:\015476 Wal-Mart SiteCivil\046 Raleigh SE (Sunnybrook)\Calcs\Storm\ICPR\O15YR 24 HR.R32
Override Defaults: Yes
Storm Duration(hrs): 24.00
Rainfall File: Scsii-24
Rainfall Amount(in): 6.04
Time(hrs) Print Inc(min)
--------------- ---------------
30.000 5.00
Name: OSOYR 24 HR
Filename: P:\015476 Wal-Mart SiteCivil\046 Raleigh SE (Sunnybrook)\Calcs\Storm\ICPR\DSOYR 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: 100YR 24 HR
Filename: P:\015476 Wal-Mart SiteCivil\046 Raleigh SE (Sunnybrook)\Calcs\Storm\ICPR\1OO.R32
Override Defaults: Yes
Storm Duration(hrs): 24.00
Rainfall File: Scsii-24
----Rainfall Amount(in): 8.20
Time(hrs) --- Print-Inc(min)-
30.000 5.00
----------------------------------------------------------------------------------------------------
Name: DRAWDOWN
Filename: P:\015476 Wal-Mart SiteCivil\046 Raleigh SE (Sunnybrook)\Calcs\Storm\ICPR\DRAWDOWN.I32
Override Defaults: Yes
Storm Duration(hrs): 0.00
Rainfall File: Scsii-24
Rainfall Amount(in): 0.00
Time(hrs) Print Inc(min)
--------------- '--------------
30.000 5.00
------------------------------------------------------------------------------------------
------------------------------------------------------------------------------------------
___= Routing Simulations _________________________________________________________________
------------------------------------------------------------------------------------------
------------------------------------------------------------------------------------------
Name: 002Y024H Hydrology Sim: 002YR 24 HR
Filename: P:\015476 Wal-Mart SiteCivil\046 Raleigh SE (Sunnybrook)\Calcs\Storm\ICPR\0O2YO24H.I32
Execute: Yes 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)
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 4 of 6

1
1
1
1
1
1
1
1
1
1
1
POST-DEVELOPMENT ROUTING INPUT: ALL
--------------- ---------------
11.000 30.000
14.000 5.000
30.000 60.000
Group Run
BASE Yes
-------------------y-----~--------------------------------------------------------
Name: O10Y024H H drolo Sim: OlOYR 24 HR
Filename: P:\015476 Wal-Mart SiteCivil\046 Raleigh SE (Sunnybrook)\Calcs\Storm\ICPR\O10YO24H.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): 0.5000 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 60.000
Group Run
BASE Yes
----------------------------------------------------------------------------------------------------
Name: O15YO24H Hydrology Sim: O15YR 24 HR
Filename: P:\015476 Wal-Mart SiteCivil\046 Raleigh SE (Sunnybrook)\Calcs\Storm\ICPR\O15YO24H.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
14.000 5.000
30.000 60.000
Group Run
--------------- -----
BASE Yes
----------------------------------------------------------------------------------------------------
Name: OSOYO24H Hydrology Sim: 05OYR 24 HR
Filename: P:\015476 Wal-Mart SiteCivil\046 Raleigh SE (Sunnybrook)\Calcs\Storm\ICPR\O50YO24H.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): 0.5000 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
---- -----
Interconnected Channel and Pond Routing Model (ICPR) ©2002 Streamline Technologies, Inc.
Page 5 of 6

1
1
1
1
1
1
1
1
1
1
1
POST-DEVELOPMENT ROUTING INPUT: ALL
BASE Yes
----------------------------------------------------------------------------------------------------
Name: 10OYO24H Hydrology Sim: 1O0YR 24 HR
Filename: P:\015476 Wal-Mart SiteCivil\046 Raleigh SE (Sunnybrook)\Calcs\Storm\ICPR\1O0YO24H.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
14.000 5.000
30.000 30.000
Group Run
--------------- -----
BASE Yes
---------------------------------------------------------------------------------------------------
Name: DRAWDOWN Hydrology Sim: DRAWDOWN
Filename: P:\015476 Wal-Mart SiteCivil\046 Raleigh SE (Sunnybrook)\Calcs\Storm\ICPR\DRAWDOWN.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): 120.00
Min Calc Time (sec): 0.5000 Max Calc Time sec): 120.0000
Boundary Stages: Boundary Flows:
Time(hrs)- --- Print Inc(min)
------------
120.000 60.000
Group Run
BASE Yes
__________________________________________________________________________________________
___= Boundary Conditions ----------------------------------------------------- -----
Interconnected Channel and Pond Routing Model (ICPR) ©2002 Streamline Technologies, Inc.
Page 6 of 6

~~
1 POST-DEVELOPMENT ROUTING RESULTS:
(2-,15-,100-YR, 24-HOUR EVENTS)
1
STORMWATER MANAGEMENT CALCULATIONS
' Wal-Mart -Raleigh SE (Sunnybrook)

1
1
1
1
1
1
1
1
1
X 3 N
roow
~ rl U
W
O
W 3 m
E or.
-ri .-1 f.
F w
L
roo
x
roow
£ ~ U
H
v 3 m
E~~
F q
roH
w ro N
s+ v ,~
maw
X
ro
i pi w
~ ro
q m
ro
b~N W
-.~i ro w
Lei (gyp
3
ro bi w
~ ro
W -M ro .C
£ F ~
P: X
o ro
F £
T O
C~ L
N ro
N
ac o
N ~
.~
N V1
0 0 0 o m
O O O O N
0000 cF
O O O O d~
oooor
O O O O N
O O O O N
r-1
aN rui
Q7 m .-I ei
r o rn rn
t+1IN ~KV~OI
o~coomo
00000
N N N N N
~ ~ ~ ~ ~
oooo~n
0
00000
oooo~n
00000
00000
00000
00000
00000
00000
01 Ol 01 01 N
rnmrnm~n
Ol O\ 01 Ol N
ooooa~
ooooM
0 0 0 o rn
uimcw~n
N V~ ~"1~N
N N N N N
oooor
O O O O N
O O O O N
xxxxx
ae~ca~~
N N N N N
O O O O O
~ ~ N N ~
N N N N N
O O O O O
O O O O O
a wwwww
~ ww~~~
o aaaaa
~, waawww
c~
ro
z
rlN f+l d~ Q
aaaao
aaaaa
wwwwF
F F F F W
0 0 0 0 3
w
0
a~
on
a
F7
vi
N
.~
O
O
U
.~
Q)
w
C/]
N
O
O
Ri
a
U
...
b
0
.~
0
b
0
a
G
ca
U
v
O
N

t
1
1
1
1
1
1
1
1
1
1
1
1
i
1
1
N
O
}
N
0
0
c
W ~
W 3
O
H
a
x
N
L~
N
H
a
w
x
z
H
E-~
R'.
H
W
a
O
W
W
Q
I
H
O
a
~-- N C7 ~f
J J J J
J J J J
Q Q Q Q
LL LL LL LL
H H H H
~ ~ ~ ~
0000
I ~ I

M
~
_
J
J
~1
~
`~ ~
~
J

e
0 0

1
g~
i
1
~ M N ~
~S}O~MO~}U~ ~2}Oj
t7
O
(7
N
0
N ~
L
m
H

0

0

Q
.~
0
V
a~
E-'
.~
co
N
0
0
N
Chi
a
U
`--i
b
O
.y
O
N
U
b
Y
U
N
O
U
.~
C

w
0

a

K 3 m ooooco
ro O w o 0 0 0~
$' .--I U 0 0 0 0 lD
W
11 0000.-1
~
O
vim o 0 0 o e~
E O~ oooo.~
E w o 0 0 o N
L .--I
O
~'
X 3 ti ~ ~ ~ ~
ro o w
£~ u ~n in o
inoo ra
w
y: .i t'1 N
H e-I h l~
r-1 ~
a7 3 N mmomo
~o 00000
~
E W N N N N N
(.' r-1 '-i N N N
~
ro
W ro N
H U) L O O O O 1!1
N
w
V1 a' (y1
d' U
m ~
vi
rowu
u tnw 00000
oooovi ~
pp
'+ ro
v L 00000
0 0 0 0 0
q V7 Q
0 0 0 0 0
'
ro
~ U
N
b~ v u 00000 E-+
q biw
-.+ rt
C i 00000
00000
~
~
4 [n mmmmin
ro m m rn m a
O~ Ol 01 O~ N
G
C~
N
'/.' U/ 1 J
ro bow 0 0 0 0 t h
oooor~ +"~
C/1
~ ~
cn oooori
inmamw N
O
rl cM t+1 T N C

z N N N N N (v
~
w
ro
i'-~
+
E bi t oooo~ ~
-,, ro x
E+-~ ooooN Gr
~' ~" U
N ~ .~

~ o ~~aac O
d~ -. ~ N N N N N

N
J J
O O O O O r G
R:
~ rl
~ l!1 N ~ ifl ~
•--I '-I fi .-i .1
~
y
O O O O O ~
'
~[1
rl .I
N
O

~ b
E C
v°, o aaaaa
w
~
wx ~ w as ao w as .b
~
c~

r-i N
°a `~

~ aaaa°

W z a
E F F E W ~
Q

A :7 D P .7 3
0 0 0 0 Q

O
V
i i
.
O tr'
W r--r

r- N c+7 'c}'
J J J J
J J J J
' Q Q Q Q
ll. LL. lL lL
H H ~ H
~ ~ ~ ~
0000
I ( I
N
O
O
z o
~ ~
W 3
h
C1:
x
d~
N
a
E+
a
m
w
a
z
H
F
N
z
w
a
O
a

1
1

w
•_ ~

.~. ~ ~
_ /
~
V

4

~ ~
0

w
W N O W O 7 N
r r
Q
°a (s~o)MO~uI le~ol
co
0
M
N
O .-~
N y
L
a~
E
H
r
0

ov
U
Q
i-+
V)
.~
0
U
N
.~
C/]
N
O
O
N
0
z
a
U
0
co
.Y
b
O
a
U
::
U
O
a~
a

1
1
1
1
1
1
1
f
1
1
f
1
1
1
1
X 3 m
ro ow
~ ~ U
w
O
N 3 N
~ O i-i
.N ~ ~
E w
O
K 3 m
~ o w
~ .~ U
C
H
v 3 ul
Eos,
Ewe
~ H
W nS N
Ya U/ J i
~Q'w
m
ro v ,~
L CI W
.~ ro
A vwi
k
ro
rnvu
q b~ w
•., ro
~~
3
~ ro W
F
2
w
w vvu~
E b ~
O X UI
cn ro
a
x
~o
N .i
~~
a
o~
o ..,
~~
F
a a
5 7
m o
w s.
x w
z
H
F
O
LL'
W E
a z
O
a
w
w
w
E
O
a
N
r
N
N
O
'-I
m
r~
0
N
0
0
ti
c0
N
T
0
0
0
0
c
N
r
0
N
N
0

0
0
w
t
w
w
w
0
a~
an
a
U
.~
v~
N
.~
O
O
H
.~
w
N
O
O
N
L~,
a
U
a~
.~
0
.~
b
Q
O
a
Q
~."
Ste'
U
b
a~
U
v
0
,~+
H-r

RIP RAP APRON CALCULATIONS
STORMWATER MANAGEMENT CALCULATIONS
Wal-Mart -Raleigh SE (Sunnybrook)

1
1
1
1
1
1
A
1
A
1
1
1
1
1
1
I~I~ IGmley-F1om
\ ~ ......... aM Assodates, Inc.
OUTLET PROTECTION
DESIGN OF RIPRAP LININGS
Project Information
Project Name: Wal-Mart#4447-00, Raleigh, NC (Raleigh SE)
KHA Project #: 015476046
Designed by: JMH Date: 3/13/2007
Revised by: Date:
20 -
y 16-
~_
}
H
W 10
5-
D. 2 zt X if eC I i
D' 5' 10' 15' 2D' 25'
DIAMETER (Ft.)
Figure 8.06.b.1
All aprons sized using fhe New York DOT Dissipator Method as outlined by NCDENR (Erosion Control Manual, Section 8.06)
Pipe 10-yr Apron Apron Stone Apron
Description Diameter Velocity Zone Lengfh Width Class Thickness
(in) (fps (- (ft) (ft) (-) (in)
30" RCP (Storrnwater Outfall From Pond) 30 8.0 2 15 8 B 18
54" RCP (Stortnwater Outfall Into Permanent Pond) 54 12.7 3 36 14 1 24
Rip-Rap.xls
RipRap Aprons
,~
6
iiii~
,i~
7
S i~
viii iii
~i~
~~ ii
~i~
2 ~ 3 ~ 4
'~ i
~ii~
Page 1 of 1

1
1
1
1
1
f
1
1
1
1
1
1
NITROGEN CALCULATIONS
STORMWATER MANAGEMENT CALCULATIONS
Wal-Mart -Raleigh SE (Sunnybrook)

t
NITROGEN EXPORT CALCULATIONS
(Wal-Mart Raleigh SE (Sunnybrook), Raleigh, NC)
Sources: "City of Raleigh Stormwater Management Design Manual, January 2002"
METHOD 2:
Quantifying TN Export from Residential /Industrial /Commercial Developments when Footprints
of all Impervious Surfaces are shown.
STEP 1: Determine the area for each type of land use and enter in Column (2).
STEP 2: Total the areas for each type of land use and enter at the bottom of Column (2).
STEP 3: Multiply the areas in Column (2) by the TN export coefficients in Column (3) and enter in Column (4).
STEP 4: To[aI the TN exports for each type of land use and enter at the bottom of Column (4).
STEP 5: Determine the export coefficient for the site by dividing [he total TN export from uses at the bottom of
Column (4) by the total area at the bottom of Column (2) and enter the result at the bottom of Column (5).
Nitro en Removal Efficient Percents es
Grass Swale 30.0
Wet Pond 25.0 %
Ri avian Buffer 30.0
Sand Filler 35.0
Level S reader 30.0
Constructed Wetlands 40.0%
TREATMENT AREA_1
TREATMENT ARFA_1
(1) (2) (3) (4) (5) BMP BMP BMP
Type of Land Cover Site TN Export TN Export TN Export TN Removal TN Export TN Export
BMP Area Coeff. by Land Use from Ske Efficiency by Land Use From Site
type (Acres) (Ibslaclyr) (Ibsl r) (Ibslaclyr) (%) (Ibs/ r) (Ibs/ac/ r)
Permanently protected Constructed
undisturbed open space
Wetland 0.00 0.60 0.00 40.0% 0.00
forest unmown meadow
Permanently protected Constructed
managed open space (grass, Wetland 4.60 1.20 5.52 40.0°k 3.31
landsca in etc.
Proposed: Impervious
surfaces (roads, parking lots, Constructed

driveways, roofs, paved storage
Wetland 21.37 21.20 453.04 40.0 % 271.83
areas etc.
TOTAL 25.97 458.6 17.7 275.1 10.59
(1) (2) (3) (4) (5) BMP BMP BMP
Type of Land Cover Site TN Export TN Export TN Export TN Removal TN Export TN Export
BMP Area Coeff. by Land Use from Site Efficiency by Land Use From Site
type (Acres) (Ibsladyr) (Ibs/ r) (Ibslaclyr) (%) (Ibs/ r) (Ibslaclyr)
Permanently protect
undisturbed open space Na 3.39 0.60 2.03 0.0% 2.03
forest unmown meadow
Permanently protect
managed open space (grass, Na 2.07 1.20 2.48 0.0 % 2.48
landsca in etc.
Proposed: Impervious
surfaces (roads, parking bts, Na 0.00 21.20 0.00 0.0 % 0.00
driveways, roofs, paved storage
areas etc.
TOTAL 5.46 4.5 u.8 4.5 0.8s
OFFSITE ROADWAY
(1) (2) (3) (4) (5) BMP BMP BMP
Type of Land Cover Site TN Export TN Export TN Export TN Removal TN Export TN Export
BMP Area Coeff. by Land Use from Site Efficiency by Land Use From Site
type (Acres) (Ibs/ad ) (Ibsl r) (Ibslaclyr) (%) (Ibs/ r) (Ibslaclyr)
Permanently protect
undisturbed open space Na 0.00 0.60 0.00 0.0 % 0.00
forest unmown meadow
Permanently protect
managed open space (grass, Na 0.78 1.20 0.94 0.0% 0.94
landsca in etc.
Proposed: Impervious
surFaces (roads, parking lots, Na 2.30 21.20 48.76 0.0 % 48
76
driveways, roofs, paved storage .
areas etc.
TOTAL 3.06 49.7 1 Ci.1 49.7 16.14
SUMMARY TABLE

Drains a Area

Area acres
TN (export from site
Ibs/acre/ r
BMP TN (export
Ibsl r Final Nitrogen
Loading
Ibslac/ r
Treatment Area-1 25.97 17.7 275.1 10.59
Treatment Area-2 5.46 0.8 4.5 0.83
Offsite Roadwa 3.08 16.1 49.7 16.14
TOTAL 34.51 18.5 329.4 9.54
~sumeiea vusei raymern rcegwn:o = (JG.O aC)- te.41-3.0 IDIaClyr)-(y33U/ID)
$67,688.41

~ ,,..~.~... , sNOlsinaa ~vo •oN vNlwavoHLaoN o O
Door-etz (etr) :rte
to Y ~ .'~~,~~P ' •S1f ~. W 09S09LLZL 6VSNMIaV '3lll/WOLN3B ~n0~ 3MtlM'H013M1 ~ ~ ~ (~ T
~ $ F ,' 0 /~ • d~ ; ; ~ 133x16 H10L 3S LOOZ ~'Oa Aaarno HOOa aNV ~I ~./ ~ F" ~ h
~ ~ ~ ~ U tN w~ `}'~} ~ ~ )(3ldWOO 1N3WdOl3n30 NOLIV/M WVS WOa M00a9ANNnS d0 a3NH0~ LSV3HLaON O V W ~~~~ 0 ~ I
"~~~ ~~~ ~+;otl~~ ~?~?~23 ~ ~~ ~NI•saaols 00-L444'oN3bOlS 1N~W11»F~l N~rJOH11N ~ ,. m o
e -° a#~`k E •,~y~N........''~y', W 121ff W~1dM 3S H~J131V1! - lavuu~~tlM ~ ~ ~ U
^Y A3~s€~ O •••••• d S a s
~1N311J 11J31'Otld 3lLLL o
`s
~.
08
Sg
o~
zt fr
~;
~a
s~
o
E ~n
rv~~~
a n~pv§~
a ~~
a ~€~ -
e ~~Eaffi;
a e~~g~~
~S~~~Ea
~ =°~s~$ ffiffiffi8gz~
ge ~aag>'p
$4 ~~~~~~
a; a~~$°g
!-
3
0
0
0

0
O
~
: h
4
J
^^~.
W

Z
W U
6
O ~ 8
a 6
~ ~
S ~y
tN e
~
w
~ 8 ~ F XIg ~ » °~
~~ 1 ^ ~ ~~~ (r
~~
€ LJ

~~~~ ~ 9 ^~
~O~ ~8
U $ ~ Y
..
Ch
8

>u

~
Y ~ N

~ ~
~
Lr 8
8 LL
6'
y ~
y
~ M~
N
M
_
R Sd
'R 0 Ci
t
y
W
^ ~ ~ =q
Sg
a ~ ~ F
s~~~
0°p~ytl°M nap is°d puo CeX uaOauiW-91p9(rSi9\svl°p\(Mc°+9AUUnS) 3S Nal°IVy 9r9\YMYiIS >•Wi-IVT 9[YSIO\b
is"<
Jl
' €wi
~ ~N3
~~ - ---
fS
~a . ~
c a

s~
~,EF~
8 9 u~
~nFi
9
B S~
~,E4i
8
a
~~
a` m ~ €s
a~ n ~~
a`
S~
m~s'~-
b`
~`
~ Sg~
mgz~
~
~
~ Sg
maaLT
~
~
~
~~ ~~ ~~
8N} I °ni
.a ~ua

~~Bg

8
8
o
F
r,
$
h ~
^y~Fa
~
r

n
S
e ~~
3,~ga
S
o
~ ~
m

€9
3
~~
e
~3@
3 0
=
e~°
'e~s o R R
r ~r
c'~~a o R
ry
R "S3
B~s 8
a R R
n
~ g

~F ~I" fi= ~' mr z i i m+ z z i
.s ;; fra
Y ~
~ d
u ~
€ ' E
` ~

l
g
FSy
Qy~~
~ _
J o
FY
ES=
ce~~ 8
W cg
J o
'!~~ [
€atl . . ~
E@~:
g ° ~ w
0 p
ppp a w r °~u
e~B a "e N SEd F : ~ !°E !"e §
§
e~5u ° $ Ea ~eN eYd u °
.i
}

~
~' N

l\• LLI
~

.~
~ ~

,'

W

,% ~ ,y.

o ~ ~ ~ o
'~, ~ ~ O
>:
v
.;
~; o ~ D
1,
a">'~ ~o
ad~~o

1

' EXTENDED DETENTION WETLAND
PLANTING AND GRADIND PLAN

1
n

1
D
n

r
' STORMWATER MANAGEMENT CALCULATIONS
Wal-Mari -Raleigh SE (Sunnybrook)

^ C ~
~ 6NOISIA3H 31tl0 'ON
OOOY'ELZ (BL9) 131
tlNIlOHtlO H1HON ~ 1~
Y

rn
~
W
OSOf9lLZLSVSNtlHHtl'3llIANOlN3B
AlNf1003NVM'H0131tlH
' ~ a
Ui d
f

~
~-
~
~
133illS HLOI 33 t00Z
OVOl1 AHHtlf10 MOOL ONtl JNIlNt/ld N$ JNIdb2fJ
I
y
>
~
q M
0'~~
~
„ ~
~ X31dW001N3WdOl3A30 NO1NM WVS avOH NOOaewNl13 d0 H3NH001Stl3H1NON SdNb'113M g ~
N
_ ~ ~a~ roNl'seaols 00-L4Y>'oN3ilOlS m m °
~~`k
~ ~ ~~
"' '
' ~
' a ..
m a V
a
e
CC pp yyQQ
°
Q. 2 1211
rllll~
IdM 3S H
JI3
IVf! • laVYY~IVM q ~ ~ ~Y
NSdSt~O :1N3117 :1~31'OYd 3'llLL ~ g ~ ~
o
J
d '~ ~ ~ Z R
~`,~~ ~ ~ ~ ,o s J a ~~~ ~ ~0~~ ~ o
~~ 'a ~ ~ ~~ ~ ~ _~~ m~~ ~ a~aI ~ ~~ ~~ ~e ~ ~c ~ ~~x ~ U
~a ~~ ~ ~ a ~~ $ Z "~~ ~m~ ~ d ~ ~ i g ~m2 ~ k ~ w = ~ ~ of
~ ~ ~ In ~ ~1z 4a ~ a ::
w o ~$ ~
a ~ ~S ~ o @~ i~ W~ ~ ~~
o~ ~~a $ ~''"~a ~w mo a aq
f- Q
3z a ~ ~ ~ a ~ ~~ Z~ ~ ..
'~ ~ m 3 a 3 w~ UC=9 -
- ~ 6 'i ~ ~~+ w ~ _ _
~L+' 3> ~ 6~ ~ U7 ~ S ~ g ~ (n
a ~ ~ o
i'~' - 3 z
~9,ae - ~ ~ u~ ~ °a 9 gad U ~ x
~ J
m ~ A~~ aa~e ~ Q U
>,
~~3 y
~5 x
~a
5
m € < ~ ~
~....,, "~_. I • _
~ ° z~
< z z m
._ - ...... .; .. I~
~ / ~ <
.. ..._.... \7.
' ....
` .,,
,! .
~....
_ /
I / .
L /~~
--
~ a om u
~~~ ~ ~
.., r
' ... '~-.
/k
.. ~..., / / y~
~~ I \I < °
a ~ V°I
i
.. .....- ... I /
... .... -. .-... ...x ~ ~. /
H Fm x
-.. ~~ /* X. F ~ -
I ~~° ~ -Yap
-c" - y /~ i/. // ~ i7ow° ~ CFO a W;~ i
/, / ~ d ~W~z Fii~
~ti ~ / 1. I r ~wwa ~w mzam z~a
i. . . . a
~ ~ ~
. .
F~ i~. ~ov~15"~ x~go~aa gC
I. ~~z~~x" i ~m~W N.~ o
\\ I w ~ 'J~m~~m~ m~~i ~i~g ~g~ a
1 is 1 _I X N ~ u ~~u~g ~ k9 ax
.,
w < a
- \ z a gabe~~ ~~~~a~~W~F~
~~ ~\ J <u ~i~ ~
_. m
'~ iw Q UJ °~'zu~'~~oao~a u~w a~zm $
~ ~ ~g°a
-. Z i
~ p
~\ J
\ 11 a
... ._...... N
/ ~~ ~ ~ ` 11 li W aiiii< °i~o <iia
- it U' ~Nn FlYY, yen ma ~ ~ 3
1 .....
~ .... ..
,
`- I ` . „ ..... t
1 ` ~.
.. %/
... - ... ..J\
~ ~ /
-+ ~. °
//
,i
/
I
-.. / ~-
_ /~ i \ I.
- .... ~. \ v~~
7 ' I //
......~ W / / ~' xU y a ~ z < F g~m< u
I~ ~ 1:/ / r/ // // ,1 ~ ~u~k~f g ° ~w €~ k' ~ 'oaze~$a rc ~
p <~ 4`>~
/ i` 9 gib ~~ ~~s '=w>:~7°
/
// ~ N } j T <tS:' Q F< <g~ ~6b ~~ ~~~ ~~ J=ob a ~
~QJ~ ~o ~ u < o
~ // N K f :~ ~^Y ~ w Fo _ Hm~p°~w ~~~o€i~=Wa ~
„• ~
-,..~ -..._~ _- / 47~ ~ Z_ a u€«F rrNm>w S§~ ~~egr~~s a~ u
..,ri.....,_,_,r N ~ ~' ~' wo lii ~" °~°'akl~~~el~ ~~~~~~ ?~~. '~~~w
~ }~ ^ NI f a ~-m "o ~w{~{im°~~~~°WsB~~yy=~bq~°p{uu~d44o~
N N I ~ O~ ~ 23~7tLmr NO~~°~/'n~~m=Z~;O{°°~i h
~"} + ~~ W (73 ~~ g~~8~01~~rxop0~~90=~X~ r58 Tu'
"+ N i i' w r-~ P~~ Xis j~9; ~'ab~G~~~G~~~F~~~a'<~~=W i;
1 - N ~ N '. I Z ~~i~~Gw ~~2zrwg N,^ bwg
L., °i 1 1• '~" 2~ 9 i"i~9~i:i~9:o9F~~~~~~~~~~~~ e
N N+ S~ \ \..., ...~ .. a ~~ ad Ll°wz~F a~ ~° ~~aw r~
~s~ [1 S~I ~~ ,.. ~ <L~ ZF=m~<y tOF NS ~m~z~ ~ ~
Z ~ ~ ~~_ ' wln ~~a~1~V1 }.S~~R F~ i~j0 ~m
. ~~ J ~+~ ~~\ ,. Ur` mF ~ ~u°wu~i m~lA~~~'~°lyi°aU~ m~y9
~ ..w ~1~ ~~. ~° ~< ~^IWii <~ti,.~~O~F,n TF~~ag ^IF~ x
w °~a~ °>FS~~ Sz
` ~...<.
• o~w
w ~ g
... ~ ~ ~ ~ ~ ,1 ww
OAP'3M]SONYI-9t09LIS10\B~0\<ryoe+gRUw91 3S g01~leL 910\NN]~315 i+oH-loq 9LNS10\b
E
E
k
S
.T ~ ~

b L s
3

+
° P ~ s n n ~ - ~
'"
~ ~ ` ~ ~ _ _ _ €
a $

~
3 ~ o ~ o ~
~
° ~ . ~; ~ cs
° ~ 0 0 0 0 ~ 0 0 0 0 0 0
a a ~ Wi ~ lAi m iPi

m a

i ~
~
1 ~
a <
~,

~ h 5 ~° 0 2
3 3 ., o
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ r ~

3 ~
~ g
~
a ~
~ „
a Y ~ ~ ° ~ ~
_
-
- ~ ~
a ~
=
- E
d ~
z
- k
~ ~ h ~ S ` '~
m ~ e rn
-.{
> '> ,__ `

1

n

1

u
D
r
1
n

n
J

COPY OF U.S. ARMY CORPS OF ENGINEERS
SECTION 404 GENERAL PERMIT
STORMYVATER MANAGEMENT' CALCULATIONS
Wal-Mart -Raleigh SE (Su~2nybrook)
1

1

U.S. ARMY CORPS OF ENGINEERS
WILMINGTON DISTRICT
Action ID. SAW-2046-24745 County: Wake USGS Quad: Garner/Raleiah E
GENERAL PERMIT (REGIONAL AND NATIONWIDE) VERIFICATION
' Property Owner /
Authorized Agent: Romans Land Development! Todd Tu~well, Kimlev-Horn and Associates

1

1
1

1
1
Address: Attn: Michelle Leach Harper
100N Coslett Court
Carv, NC 27513
Telephone No.: 910 457-0777
Size and location of property (water body, road name/number, town, etc.): The site is located in the northeast
quadrant of Rock Quarrv and Sunnvbrook Roads in Raleigh, Wake County, North Carolina and is
identified as Wal--Mart Store 4447-00 Raleigh SE Aquatic features on site drain to Walnut Creek in the
Neuse River Basin.
Description of projects area and activity: This permit verification allows for permanent impacts to 4.20-
acre of wetlands, and 371inear feet of streams lacking important aquatic functions. Mitigation is
required for the permanent impacts to wetlands but not for streams lacking important aquatic functions
(see Permit Condition below).
Applicable Law: ®Section 404 (Clean Water Act, 33 USC 1344)
^ Section 10 (Rivers and Harbors Act, 33 USC 403)
Aut~orization: Regional General Permit Number:
Nationwide Permit Number: 39
Your work is authorized by the above referenced permit provided it is accomplished in strict accordance
with the attached conditions and your submitted plans. Any violation of the attached conditions or deviation
from your submitted plans may subject the permittee to a stop work order, a restoration order and/or appropriate
legal action.
This verification is valid until the NWP is modified, reissued, or revoked. All of the existing NWPs are
scheduled to be modified, reissued, or revoked prior to March 18, 2007. It is incumbent upon you to remain
informed of changes to the NWPs. We will issue a public notice when the NWPs are reissued. Furthermore, if
you commence or are under contract to commence this activity before the date that the relevant nationwide
permit is modified or revoked, you will have twelve (12) months from the date of the modification or revocation
of the NWP to complete the activity under the present terms and conditions of this nationwide permit. If, prior
to the expiration date identified below, the nationwide permit authorization is reissued and/or modified, this
verification will remain valid until the expiration date identified below, provided it complies with all new and/or
modified terms and conditions. The District Engineer may, at any time, exercise his discretionary authority to
modify, suspend, or revoke a case specific activity's authorization under any NWP.
Activities subject to Section 404 (as indicated above) may also require an individual Section 401 Water
Quality Certification. You should contact the NC Division of Water Quality {telephone [phone]) to
determine Section 401 requirements.
For activities occurring within the twenty coastal counties subject to regulation under the Coastal Area
Management Act (CAMA}, prior to beginning work you must contact the N.C. Division of Coastal
Management .
Page 1 of 3

This Department of the Army verif cation does not relieve the permittee of the responsibility to obtain any
other required Federal, State or local approvals/permits. .
If there are any questions regarding this verification, any of the conditions of the Permit, or the Corps of
Engineers regulatory program, please contact Jamie Shern (919) 87b-8441 ext 31.
Permit Condition:
In order to compensate for impacts to 0 20-acre of non-riparian wetlands the permittee shall make
payment to the North Carolina Ecosystem Enhancement Program (NC EEP} in the amount
(~~, determined by the NC EEP, suffcient to perform the restoration of 0.40-acre of non-riparian ~er-
.ia~wetlands in the Neuse River Basin, Cataloging Unit 03020201.
VConstruction within jurisdictional areas on the property shall begin only after the permittee has made full
payment to the NC EEP and provided a copy of the payment documentation to the Corps, and the NC EEP has
provided written confirmation to the Corps that it agrees to accept responsibility for the mitigation work
required, in compliance with the MOU between the North Carolina Department of Environment and Natural
Resources and the United States Army Corps of Engineers, Wilmington District, dated November 4,1998.
* *Note: Habitat type maybe described as found in Schafale and Weakley, Classification of the Natural
Communities of North Carolina, Third Approximation, 1994; or in accordance with Cawardin, et al (1979},
Classification of Wetlands and Deepwater Habitats of the of the United States.**
Corps Regulatory Official: Date: January 16.2007
Expiration Date of Verification: ch 18.20(17
Page 2 of 3

WILMINGTON DISTRICT
POST-CONSTRUCTION COMPLIANCE FORM
Action ID Number: SAW-2006-20745 County: Wake
Permittee: Michelle Leach Iiarner
for A'al--Mart Store 4447-00 Ralei,Q'h SE, North Carolina
Date Permit Issued: 1/16/07
Project Manager: Jamie Shern
Upon completion of the activity authorized by this permit and any mitigation required by the permit,
sign this certification and return it to the following address:
' US Army Corps Of Engineers
Wilmington District
Raleigh Regulatory Field Office
6508 Falls Of The Neuse Road
Suite 120
' Raleigh, North Carolina 27615
Please note that your permitted activity is subject to a compliance inspection by a U. S. Army Corps of
Engineers representative. If you fail to comply with this permit you are subject to permit suspension,
modification, or revocation.
I hereby certify that the work authorized by the above referenced permit has been completed in
i accordance with the terms and condition of the said permit, and required mitigation was completed in
accordance with the permiYconditions.
Signature of Permittee Date
Page 3 of 3

NATIONWIDE PERMIT 39
DEPARTMENT OF THE .ARMY
CORPS OF ENGINEERS .
FINAL NOTICE OF ISSUANCE AND MODIFICATION OF NATIONWIDE PERMITS
FEDERAL REGISTER _
' AUTHORIZED MARCH l8, 2002
i Residential, Commercial, and Institutional Developments. Discharges of dredged or fill
material irito.non-tidal waters of the United States, excluding non-tidal wetlands adjacent to tidal
waters, for the construction or expansion of residential, .commercial, and institutional building .
' foundations and building pads and attendant features that are necessary for the use and
maintenance of the structures. Attendant features may include, but are notlimited to, roads,
parking lots, garages, yards, utility lines, stormwater management facilities, and recreation
' facilities such as playgrounds, playing, fields, and golf courses (provided the golf course is an
integral part of the residential development). The: construction of new ska areas or oiI and gas
wells is not authorized by this nationwide permit.
' ti devel me is include multi le and s' le unit develo meats. Exam les of
Residen al op n p mg p p
commercial developments include retail stores, industrial facilities, restaurants, business parks,
and shopping centers. Examples of institutional developments include schools, fire stations;
government office buildings, judicial buildings, public works buildings, libraries, hospitals, and
places of worship. The.activities listed above are authorized, provided the activities meet all of
the following criteria:
A. The discharge does not cause the loss of greater than 11/2\ acre of non-tidal waters of the ~. .
United States, excluding non-tidal wetlands adjacent to tidal waters;
B. The discharge does not cause the loss of greater than 300 linear feet of a stream 'bed; .unless:
for intermittent stream beds this criterion is waived in writing pursuant to a. determination by the
District Engineer; as specified below, that the project complies with all terms and conditions of
this nationwide permit anal that any adverse impacts of the project on the aquatic environment are
f minimal, both individually and cumulatively;
C. The peimittee must notify the District Engineer in accordance with General Condition 13, if
S any of the following criteria are met:
1. The discharge causes the loss of greater than 11/10\ acre of non-tidal waters of the.United
r States, excluding non-tidal wetlands adjacent to tidal waters; or .
2. The discharge causes the loss of any open waters, including perennial or intermittent
streams, below the ordinary high water mark (see Note, below), or
3. The discharge causes the loss of greater than 3001inear feet of intermittent stream bed.
In such case, to be authorized the District Engineex must determine that the activity compiles

1
1

ii

ll

with the other terms and conditions of the nationwide permit, determine adverse
environmental effects are minimal both individually and cumulatively, and waive the
limitation on stream impacts inwriting before the permittee may proceed:
D..For discharges in special aquatic sites,`including wetlands, the notification-must include a
delineation of affected special aquatic sites;
E. The discharge is part of a single and complete project;
F. The permittee must avoid and minimize discharges into waters of the United States at the
project site to the maximum extent practicable. The notification, when.required, must include a
written statement explaining how avoidance and minimization of losses of waters of the United
States were achieved on the project site. Compensatory mitigation will normally be required to
offset the losses of waters of the United States...(See General Condition 19.) The. notification
must also include a compensatory mitigation proposal for offsetting unavoidablelosses of waters
of the United States. If an applicant asserts that the adverse effects of the project are minimal
without mitigation, then the applicant may submit justification" explaining why..compensatory
mitigation should not be required for the District Engineer's consideration;
G. When this nationwide permit is used in conjunction with any other nationwide permit, any
combined total permanent loss.of waters of the United States exceeding Il/10\ acre requires tha#
the permittee notify the District Engineer in accordance with General Condition i 3;
H. Any work"authorized by this nationwide permit must not cause more than minimal "
degradation of water quality or more than minimal changes to the flaw characteristics of any
stream (see General Conditions 9 and 21);
1. For discharges causing the loss of 11/101 acre or less"of waters of the United States, the
permittee must submit a report, within 30 days of completion of the- work, to the District
Engineer that contains the following information: (1) The name,: address, and telephone number '.
of the permittee; (2) The location of the work; (3) A description of the work; (4) The type and ~.
acreage of the loss of waters of the United States (e.g., \l/21 acre of emergent wetlands); and (5)
The type and acreage of any compensatory mitigation used to offset the loss "of waters of the
United States (e.g.,1112\ acre of emergent wetlands created on-site);
J. if there are any open waters or streams within the project area, the permittee will establish
and maintain, to the maximum extent practicable, wetland or upland vegetated buffers next to
those open waters or streams consistent with General Condition 19.-Deed restrictions,
conservation easements, protective covenants, or other means of land conservation and
preservation are required to protect and maintain the vegetated buffers established on the project
site.
2

Only residential, commercial, and institutional activities with structures on the foundation(s)
r or building pad{s), as well as the attendant features, are authorized by this nationwide permit.
The compensatory mitigation proposal required in paragraph (f) of this nationwide permit may be
either conceptual or detailed., The wetland or upland vegetated buffer required in pazagraph (j) of
' this nationwide permit will determined on a case-by-case basis by the District•Engineer far
addressing water quality concerns. The required wetland or upland vegetated. buffer.is part of the
overall compensatory mitigation xequirement for this nationwide permit. If the project site was .
previously used for agricultural purposes and the farm owner/operator used Nationwide Permit
• 40 to authorize activities in waters of the United States to increase production or construct farm
buildings, Nationwide Permit 39 cannot be used by the developer to authorize additional
activities in waters of the United States on the project site in excess of the acreage limit for
Nationwide Permit 39 (i.e., the combined acreage loss authoxzed under Nationwide Permits 39
. and 40 cannot exceed 11/21 acre).. .
- ~'~"~`'
-, :°~=.Subdivisions: For residential subdivisions, the aggregate total loss of waters of Unites States
~• authorized by Nationwide Permit 39 can not exceedli/2C acre. This includes any loss of waters
associated with development of individual subdivision lots. (Sectians~ l0 and 404) . .
Note: Areas where wetland vegetation is not present should be determined by the presence or'
' absence of an ordinary high water mark or bed and bank. Areas that are waters of the United ` .
States based on this criterion would require aPre-Construction Notification (PCN) although
water is infrequently present.in the stream channel (except for ephemeral waters, which do not
.require PCNs under paragraph (c)(s), above; however, activities that result.in the loss of greater
thanll/101 acre of ephemeral waters would require PCNs under~pazagraph (c)(1}, above) are
determined by the presence or absence .of an ordinary high water mark or bed and bank. Areas
that are watexs of the United States based on this criteria would require a PCN even though water
is infrequently present i:n the stream channel (except for ephemeral waters}. .
. .:

L'

u
3.

1
ii

n

1
1

1

NATIONWIDE PERIVIIT GENERAL CONDITIONS
The following General Conditions must be followed in order for any authorization by a
NWP to be valid:
..1.~Navigation. No activitymay cause more than a minimal adverse effect on navigation.
2. Proper Maintenance. Any structure or fill authorized shall be properly. maintained,
including maintenance to ensure public safety.
3. Soil Erosion and Sediment Controls. Appropriate soil erosion and sediment controls
must be used and maintained ineffective operating condition during construction, and all
exposed soil and other fills, as well as any work below the ordinary high water mark or high tide
line, must be permanently stabilized at the earliest practicable date. Permittees are encouraged to
perform work within waters of the United States during periods of low-flow or no-flow.
4. Aquatic Life Movements. No activity~may substantially disrupt.the necessary life-cycle
movements of those species of aquatic life indigenous to the waterbody, including'those species
that normally migrate through the area, unless the activity's primary purpose is to impound water..
Culverts placed in streams must be installed to maintain low flow conditions.
5. Equipment. Heavy equipment working in wetlands must'be placed on mats; or other
measures must be taken to minimize soil disturbance.
6.Regional and Case-By-Case Conditions. The activity must comply with any regional
conditions that may have been added by the Division Engineer (see 33 CFR 330.4{e)) .and with
any case specific conditions.added by the Corps or by the state or tribe in its Section 401 Water
Quality Certification and Coastal Zone Management Act consistency determination.
7. Wild and Scenic Rivers. No activity may occur in a component of the National Wild and
Scenic River System; or in a river officially designated by Congress as a'study river" for possible
inclusion in the system, while the river is in an official study status; unless the appropriate
Federal agency, with direct management responsibility for such river, has determined in writing
that the proposed activity will not adversely affect the Wild and Scenic River designation, or
study status. information on Wild and Scenic Rivers maybe obtained from the appropriate
Federal Iand management agency iri the azea {e.g_, National Park Service, U.S. Forest Service,
Bureau of Land Management, U.S. Fish and Wildlife Service).
8. Tribal Rights. No activity or its operation may impair reserved tribal rights, including,
but not limited to, reserved water rights and treaty fishing and hunting rights.
9. Water Quality.

a. In certain states, and tribal lands an individual 441 Water Quality Certification must be
obtained or waived (See 33 .CFR 330.4(c)).
b. For NWPs 12, 14,-17, 18, 32, 39, 40, 42, 43, and 44, where the state or triba1441
certification (either generically. or individually) does not require or approve water quality
management measures, the pennittee must provide water quality management measures that will
ensure that the authorized -work does not result in more than minimal degradation of water
quality (or.the Corps determines that compliance with state or local standards, where applicable;
' will ensure no more than minimal adverse effect on water quality}. An important component of
water quality management includes. stormwater management that minimises degradation of the
downstream aquatic system, including water quality (refer to General Condition 21 for
' stormwater management requirements). Another important component of water quality
management is the establishment and maintenance of vegetated buffers next to open waters,
..including streams (refer to General Condition 19 for vegetated buffer requirements for the:
I~WEs).. ...
This condition is only applicable to projects that have the potential to affect water quality.
While appropriate measures -must be taken, inmost cases it is not necessary to conduct detailed
studies to identify such measures or to require monitoring. '
' l0. Coastal Zone Management. In certain states, an individual state coastal zone
management consistency concurrence must be obtained or waived (see 3.3 CFR 330.4(4)}.
11. Endangered Species. -
a. -No activity is authorized under any NWP which is likely to jeopardize the continued.
' existence. of a threatened or endangered species or a species proposed for such designation, as
identified under the Federal Endangered Species Act (ESA), _or which will destroy or adversely
modify the critical habitat of such species. Non-federal penmittees shall notify the District
' Engineer if any listed species or designated critical habitat might be affected or is in the vicinity
of the project, or is located in the designated critical habitat and shall not begin work on the
activity until notified by the District Engineer that the requirements of the ESA have been
satisfied. and that the activity. is authorized. For activities that may affect Federally-listed
endangered or threatened species or designated critical habitat, the notification must include the
name{s} of the endangered or threatened species that may be affected by the proposed work or
that utilize the designated critical habitat that maybe affected by the proposed work. As a result
of formal or informal consultation with the FWS or NMFS the District Engineer may add
' species-specific regional endangered species conditions to the NWPs.
b. Authorization of an activity by a NWP does not authorize the "take" of a threatened
or endangered species as defined under the ESA. In the absence of separate authorization (e.g., an
' ESA Sectiom 10 Permit, a Biological Opinion with "incidental take" provisions; etc.) from the
USFWS or the NMFS, both lethal and non-lethal "takes" of protected species are in violation of
' the ESA. lnformation on the location of threatened and endangered species and their critical
5

habitat can be obtained directly from the offices of the USFWS and NMFS or their World Wide.
Web pages at http://www.fws.gov/r9endspp/endspp.html and http://www.nfms.noaa.gov/prot
' res/overview/es.html respectively.
' 12.~Historic Properties.. No activity that may affect historic properties listed, or eligible for
listing, in the National Register of Historic Places is authorized, until the District Engineer has
complied with the provisions bf 33 CFR part 325, Appendix C. The prospective permittee must
' .notify the Districf Engineer if the authorized activity may affect any historic properties listed;
determined to be eligible, or which the prospective permittee has reason to believe maybe
eligible for listing on the National Register of Historic Places, and shall not begin the activity
until notified by the District Engineer that the requirements of the National Historic Preservation
Ac# have been satisfied and that. the activity is authorized_ Information on the location and
existence of historic resources can be obtained-from the State Historic Preservation Office and
the National Register of Historic Places (see 33 CFR 330.4(g)). For activities that mayaffect..
' historic properties listed in, or eligible for listing in; the National Register of Historic Places, the
notification must state which historic property maybe affected by the proposed work or include a
' vicinity map indicating the location of the historic property.
13. Notification.
a. Tuning; where required by the terms of the NWP; the prospective. permittee must
notify the District Engineer with a preconstruction notification (PCN) as early as possible: The
District Engineer must determine if the notification is complete within 30 days of the date of
' receipt and can request additional information necessary to make the PCN complete only once. -
However, if the prospective permittee does not provide all of the requested information, then the
District Engineer will notify the prospective permittee that the notification is ;still .incomplete and
the PCN review process will not commence until all of the requested information has been
received by the District Engineer: The prospective permittee shall not begin the activity:
' 1. Until notified in writing iiy the District Engineer that the activity may proceed
under the NWP with any special conditions imposed by the District or Division Engineer; or
' 2. If notified in writing by the District or Division Engineer that an Individual .
Permit is required; or
' ~ 3.`Unless 45 days have passed from the District Engineer's receipt of the complete
notification and.the prospective pernuttee has not received written notice from the District, or
Division Engineer. Subsequently; the permittee's right to proceed under the NWP may be
' modified, suspended, or revoked only in accordance with the procedure set forth in 33 CFR
330.5(d)(2).
' b. Contents of Notif~cation:~ The notification must be in writing and include the
. following information:..
. .
6
1

-
1.Name, address and telephone numbers of the prospective permittee;
' 2,:Location of the .proposed project;
3. Brief description of the proposed project; the project's purpose; direct and indirect
' adverse environmental effects the project would cause;any other NWP(s), Regional General
Permit(s), or Individual Permit(s) used or intended to be used to authorize any part
of the proposed project or any related activity: Sketches should be provided when necessary to
' show that the activity complies with the terms. of the NWP (Sketches usually clarify the project .
and when provided result in a quicker decision.); .
' 4. For NWPs 7;12, 14, 18, 21,.34, 38, 39, 40, 41, 42, and 43, the PCN
must also include a delineation of affected special aquatic sites, including wetlands, vegetated
shallows (e.g., submerged aquatic vegetation, seagrass beds), and.rifIle and pool complexes (see
' paragraph 1~3(f));
:. ~5. For TIWP 7 (Cutfall Strictures and Maintenance), the PCN must include
information regarding the original design capacities and.configirations of those areas of-the
facility where maintenance dredging or excavation is proposed;
' 6. For NWP 14 (Lineaz Transportation Projects}, the PCN must include a .
compensatory mitigation proposal to offset permanent losses of waters of the US and a statement
describing how temporary losses of waters of the ~US will be minimized to the maximum extent
' practicable;
.. . ~ 7. For NWP 21 (Surface Coal Mining Activities), the PCN must include an Office
of Surface Mining (OSM) or state-approved mitigation plan, if applicable. To be authorized by
this NWP, the District ingineer must de#ermine that the activity complies with the terms and
conditions of the NWP and tha# the adverse environmental effects are minimal both individually
' and cumulatively and must notify the project sponsor. of this determination in writing;
8. For NWP 27.(Stream and Wetland Restoration Activities), the PCN must include
' documentation of the prior condition of the site that will be reverted by the permittee;
9. For NWP 29 (Single-Family Housing), the PCN must also include:
.. ~.
i. Any past use of this NWP by the Individual Permittee and/or the permittee's
' spouse;
ii. A statement tha# the single-family housing activity is for a personal residence
of the pernnittee;
,. iii. A .description of the entire parcel, including- its size, and a delineation of ~ .
wetlands. For the purpose of this NWP, parcels of land measuring 11/41-acre or Iess wiIl not
1
1

require a formal on-site delineation. However, the applicant shall provide an indication of where
. the wetlands are and the amount of wetlands that exists on the property. For parcels greater than
11/41-acre in size, formal wetland delineation must be prepared in accordance with the current
method required by the Corps. (See paragraph I3(f}};
' iv. A written description of all Iand (including, if available,'legal descriptions)
owned by the prospective permittee and/or the prospective permittee's spouse, within aone-mile
radius of the_parcel, in any form of ownership (including any land owned as a partner,
' corporation, j oint tenant, co-tenant, _or as atenant-by-the-entirety) and any land on which a -.
purchase and sale agreement or other contract for sale or purchase has been executed;
' I0. For NWP 31 (Maintenance of Existing Flood Control Facilities), the prospective
permittee must either notify the District Engineer with a PCN prior to each anaintenance activity.
or submit afive-year (or less) maintenance plan. In addition, the PCN must include all of the "
' following:
i. Sufficient baseline inforination~ identifying the approved, channel depths and
' configurations and existing facilities. Minor.deviations.are authorized,:provided the.approved
flood control protection or drainage is not increased;

1
1
ii. A delineation of any affected special aquatic sites; including wetlands; and,
iii. Location of the dredged material disposal site;
11. For NWP 33 (Temporary Construction, Access, and Dewatering), the PCN must
also include a restoration plan of reasonable measures to avoid and minimize adverse effects to
aquatic resources;
I2. For NWPs 39, 43 and 44, the.PCN must also include a written'statement to the
District Engineer explaining how avoidance and minimization for losses of waters ofthe US
were achieved on the project site; .
13. For NWP 39 and NWP 42; .the PCN must~include~ a compensatory mitigation
proposal to offset losses of waters of~the US or justification explaining why compensatory
mitigation should not be required. For discharges that cause the loss of greater than 3001inear
feet of an intermittent stream bed, to be authorized, the District Engineer must determine that the
activity complies with the other :terms and conditions of the NWP, determine adverse
environmental effects are minimal both individually and cumulatively, and waive the limitation
on stream impacts in writing before the permittee may proceed;
14. For NWP 40 (Agricultural Activities), the PCN must include a compensatory
mitigation proposal to offset losses of waters of the US. This NWP does not authorize the
relocation of greater than 300 linear feet of existing serviceable drainage ditches constructed in.
non-tidal streams unless, for drainage ditches constructed in intermittent nontidal streams, the
8

' District En ' eer waives this criterion in writin , and the District Engineer has determined that
i~ g
the project complies with all terms and conditions of this NWP, and that any adverse. impacts of
the project on-the aquatic environment.aze minimal; both individually and cumulatively;
.15. For NWP 43 (Stormwater Management Facilities), the PCN must include, for
the construction of new stormwater management. facilities, a maintenance plan ~(in accordance
with state and local requirements, if applicable) and. a compensatory. mitigation proposal to offset
losses of waters of the US. For discharges that cause the.loss of greater than 30.0 linear feet of an
intermittent .stream bed, to be authorized, the .District Engineer must determine that the activity.
complies with the other terms and conditions of the NWP, determine adverse environmental
effects are minimal both individually and cumulatively,. and waive. the limitation on stream
' impacts in writing before the permittee may proceed;
' _.::: ; .1 b. For NWP 44 (Mining Activities), the PCN must include a description. of all
waters of the US adversely affected by the project, a description of measures taken to minimize
adverse effects to waters of the US, a description of measures taken to comply with the criteria of
theNWP,.and a reclamation plan (for all aggregate mining activities in isolated waters and
nnn-tidal wetlands adjacent to headwaters. and any bard rock/mineral mining activities);
l7. For activities that may adversely affect Federally-listed endangered or
threatened species, the PCN must include the name(s) of those endangered or threatened species
that maybe affected by the proposed work or utilize the designated critical habitat that maybe .
~ affected by the proposed work; and
. 18: For activities that. may affect historic properties listed in, or eligible for listing
in, .the National Register of Historic Places, the PCN must state which historic property maybe
affected by the proposed work or include a vicinity map indicating the location of the historic:
property.
c. Form of Notification: The standazd Individual Permit application form (Form .ENG
4345) maybe used as the notification but must clearly indicate that it is a PCN and must include
all of the information required in (b} (1)-(18) of General Condition 13. A letter containing the
requisite information may also:be used. ~ .
d. District Engineer's Decision: In reviewingahe PCN for the proposed actieity,~the
District Engineer will determine whether the activity authorized by the NWP will result in more..
than minimal individual or cumulative adverse environmental effects or may be contrary to the
public interest: The prospective permittee may submit a proposed mitigation plan with the PCN
to expedite the process. The District Engineer will consider any proposed compensatory
mitigation the applicant has included in the proposal in determining whether .the net adverse
environmental effects to the aquatic environment of the proposed work are minimal. If the
District Engineer determines that the activity complies with the terms and conditions of the NWP
and that the adverse effects on the aquatic environment aze minimal, after considering mitigation,
the District Engineer wll:notify the permittee,and. include any conditions the District Engineer
9

deems necessary. The District Engineer must approve any compensatory mitigation proposal
before the permittee commences work: If the prospective permittee is required to submit a .
compensatory iitigation proposal with the~PCN, the proposal maybe either conceptual or
detailed. If the prospective permittee elects to submit a compensatory mitigation plan with the
.. ~ ~ PCN, the District:Engineer will expeditiously review the proposed compensatory mitigation plan.
' The District Engineer must review the plan within 45 days of receiving a complete PCN and
determine whether the conceptual or specific proposed mitigation would ensure no more tlian
minimal adverse effects on the aquatic environment..If the net adverse effects of the project on
the aquatic environment (after consideration of the compensatory mitigation proposal) are
determined by the District Engineer to be minimal, the District Engineer will provide a timely
written response to the applicant. The response will state that the project can proceed under the
terms and conditions of the NWP.
' If the District Engineer determines that the adverse effects of the proposed work are more
than minimal, then the District Engineer -will notify the .applicant. either:
1. That the project does not qualify for. authorization under the NWP and instruct
the applicant on the procedures to seek authorization under an Individual Permit;
' 2. that the project is authorized under the NWP subject to the applicant's submission
of a mitigation proposal that would reduce the adverse effects on the aquatic environment to the
minimal level; or
' 3. that the project is authorized under the NWP with specific modifications or
conditions. Where.the District Engineer determines that mitigation is required to ensure no more
than minimal adverse effects occur to the aquatic environment, the activity will be authorized
' within the 45-day PCN period. The authorization will include the necessary- conceptual or
specific mitigation or a requirement that the applicant submit a mitigation proposal that would .
reduce the adverse effects on the aquatic environment to the minimal level. When conceptual
' mitigation is included, or a mitigation plan is required under item (2) above, no work in waters of
the US will occur until the District Engineer has approved a specific mitigation plan.
' e. Agency Coordination: The District Engineer will consider any comments from
Federal and state agencies concerning the proposed activity's compliance with the terms and
conditions of the NWPs and the need-for mitigation to reduce the project's adverse environmental
' effects to a minimal level.;
' For activities requiring notification to the District Engineer that result in the loss of greater
than 11/21-acre of waters of the US, the District Engineer will provide immediately (e.g., via
facsimile transmission, overnight mail, or other expeditious manner) a copy to the appropriate
' Federal or state offices (USFWS, state natural resource or water quality agency, EPA, State
Historic Preservation Officer (SHPO), 'and, if appropriate, the NIvIFS}: With the exception of
NWP 37, these agencies will then have 10. calendar days from the date the material is transmitted
to telephone or fax the District Engineer notice that they intend to provide substantive,
1 ~o

site-s ecific comments. If so contacted b - an a ency, the District Engineer will wait an
p Y g
additional 15 calendar. days. before making a decision_on the. notification. The- District Engineer
will fitlly consider agency comments received within the specified time frame, but will provide
no response to the resource agency, except as provided below. The District Engineer will indicate
in the administrative record associated with each notification that the resource agencies' concerns
' were considered. As required by section 305(b){4}(B) of the Magnuson-Stevens Fishery
Conservation and Management Act, the District Engineer will provide a.response to. NMFS
within 30 days of receipt ofany-Essential Fish Habitat conservation recommendations.
Applicants are encouraged to provide the Corps multiple copies of notifications to expedite
agency notification.
' f. Wetland Delineations: Wetland delineations must be prepared in accordance with the
current method required by the Corps (For NWP 29 see paragraph (b)(9)(iii) for parcels less than
(11 /.41-acre ,in size}. The permittee may ask the Corps. to delineate the specialaquatic site. There
' maybe some. delay if the Corps does'the delineation. Furthermore, the 45-day period will not
start until the wetland delineation has been completed and submitted to the Corps, where
' - appropriate:::
14. Compliance Certification. Every permittee who has received NWP verification from the
Corps will submit a signed certification regarding the completed work and any required
' mitigation. The certification will be forwarded by the Corps with the authorization letter and will
include:
' - . a...A statement that the authorized work was done in accordance with the Corps
authorization, including any general or specific conditions;
b. A statement that any required mitigation was completed in accordance with the
permit conditions; and -
' c. The signature of the permittee certifying. the completion of the work and mitigation....
15. Use of Multiple Nationwide Permits. The use of more than one NWP. for a single and
' complete project is prohibited, except when the acreage. loss of waters of the US authorized .by
the NWPs does not exceed the acreage limit of the NWP with the highest specified acreage limit
(e.g. if a road crossing over tidal waters is constructed under NWP 14, with associated bank
stabilization authorized by NWP 13, the maximum. acreage loss of waters of the US for the total .
project cannot exceed 11131-acre) .
16. Water Supply Intakes, No activity, including structures and work in navigable waters of
the US or discharges of dredged or fill material, may occur in the proximity. of.a public water
supply intake except where the activity is for repair of the public water supply intake structures
' or adjacent bank stabilization. '
17.. Shellfish Beds. No activity, including structures and work in navigable waters of the US
11

"
or discharges of dredged. or fiI1 material, may occur in areas of concentrated shellfish
' populations,-unless the activity is directly related to a shellfish harvesting.activity authorized by
NWP 4.
.: 18. Suitable Material. No activity, including structures and work in navigable waters of the
- US or discharges of dredged or fill material, may consist of unsuitable material (e:g., trash,
.debris, car bodies, asphalt, etc.) and material used for construction or discharged must be free
from toxic pollutants in toxic amounts (see section 307 of the CWA}.
19. Mitigation. The District Engineer will consider the factors discussed below when:
' ~ determining the acceptability of appropriate and practicable mitigation necessary to offset
adverse effects on the aquatic environment that axe more than minimal.
a. Tlie project must be designed and constructed to avoid and minimize adverse effects'
to waters of the US to the maximum extent practicable at the project site {i:e.; on site).
' b. Mitigation in all its forms (avoiding, minimizing, rectifying, reducing or
compensating) will be required to the extent necessary. to ensure that. the adverse .effects to the
aquatic environment are in.inimal:

c. Compensatory mitigation at a minimum one=for=one ratio will be required for all
wetland impacts requiring a PCN, unless the District Engineer determines in writing that some
other form of mitigation would be more environmentally appropriate and provides a
project-specific waiver of this requirement. Consistent with National policy, the District Engineer
will establish a preference for restoration of wetlands as compensatory mitigation, with `
preservation used only in exceptional circumstances.
d. Compensatory mitigation (i.e., replacement or substitution of aquatic resources for
those impacted) will not be used to increase the acreage losses allowed by the acreage limits of
some of the NWPs. For example, \1/4\-acre of wetlands cannot be created to change a,13/4\acre
loss of wetlands to a 11/21-acre loss associated with NWP 39 verification. However, \1/2\-acre of
created wetlands can be used to reduce the impacts of a 11/21-acre loss of wetlands to the
minimum impact level in order to-meet the minimal impact requirement associated with NWPs.
e. To be practicable, the mitigation must be available and capable of being done
considering costs, existing technology, and logistics in light of the overall project purposes. ~-
Examples of mitigation that may be appropriate and practicable include, but are not limited to:
reducing the size of the project; establishing and maintaining wetland or upland vegetated buffers
to protect open waters such as streams; and replacing losses of aquatic resource functions and
values by creating, restoring, enhancing,"or preserving similar functions and values, preferably in
the same watershed.
f. Compensatory mitigation plans for projects in or near streams or other open waters
will normally include a requirement for the establishment, maintenance; and Iegal protection
12

1
1
i
1
1
1
1
1
1
1
1
1
1
1
(e.g., easements, deed restrictions} of vegetated buffers'to open. waters. In many cases, vegetated.
buffers will be the only compensatory mitigation required..Vegetated buffers should consist of
native species. The width of the vegetated buffers required will address documented water
quality or aquatic habitat loss concerns. Normally, the vegetated buffer .will be 25 to 50 feet wide
on each side of the stream, but the District Engineers. may -require slightly: wider vegetated buffers
to address .documented water quality or habitat Ioss concerns. Where both wetlands and open
waters exist.on the project site, the Corps will determine the appropriate compensatory mitigation
(e.g., stream buffets or wetlands compensation} based on what is best for the aquatic
environment or, a .watershed basis. In cases where vegetated buffers are determined to be the
most appropriate form of compensatory mitigation, the District Engineer may waive .or reduce
the requirement to provide wetland compensatory mitigation for wetland impacts.
g. Compensatory mitigation proposals submitted with the ".notification".maybe either
conceptual or detailed. ff conceptual plans are approved under the verification, .then the Carps
will condition the verification to require detailed plans be submitted and approved by the Corps
prior to construction of the authorized activity in waters of the US.
..~;. .
~><..
. . :h.~ermittees may propose the use of mitigation banks, in-lieu fee arrangements or .
separate activity-specific compensatory mitigation. In all cases that xequire.compensatory
mitigation, the mitigation provisions.will specify the party zesponsible for accomplishing and/or
complying with the mitigation plan..... .
20. Spawning Areas. Activities, including structures and work in navigable. waters of the
US or dischazges of dredged or fill material; in spawning areas during spawning seasons must be
avoided to the. maximum extent practicable. Activities that result. in the physical destruction (e.g.,
excavate, fill, or smother downstream by substantial turbidity). of an important spawning area: aze
not authorized.. :. .
21. Management of Water Flows. To the maximum extent practicable, the'activity must be.
designed to maintain preconstnzction downstream flow conditions (e.g., location, capacity, and
flow rates).: Furthermore; the activity must not permanently restrict or impede the passage of
normal or expected high flows (unless the primary purpose of the fill is to impound waters), and ,
the structure or discharge of dredged or fill material must withstand expected high flows. The
activity must, to the,maximum extent practicable, provide for retaining excess flows from the
site, provide for maintaining surface flow rates from the site similar. to preconstruction
conditions,. and.provide for not increasing water flows from the project site, relocating water; or -
redirecting water flow beyond preconstruction conditions. Stream channelizing will be reduced to
the minimal amount necessary, and the activity must, to the maximum extent practicable, reduce
adverse effects such as flooding or erosion downstream and upstream of the project site, unless
the activity is part of a larger. system designed to manage water flows. Inmost cases, it will not.
be a requirement to conduct detailed studies and monitoring of water flow. -
This condition is only applicable to projects that have the potential to affect waterflows.
While appropriate measures must be taken, it is not necessary to conduct detailed studies to
13

identifysuch measures or require monitoring to ensure their.effectiveness.~Normally, the Corps
will defer to state -and local authorities regarding management of water flow.
22. Adverse Effects From Iinpoundments.~If the activity creates an impoundment of water,•
.adverse effects to the aquatic system due to the acceleration of the passage of water, and/or the
restricting its~flow shall be minimized to the maximum extent~practicable. This includes
'structures and work.in navigable waters of the US, or discharges of dredged or fill material:
23. Waterfowl Breeding Areas. Activities, including structures and work in navigable
waters of the US or discharges of dredged or fill material, into breeding areas for migratory
waterfowl must be avoided to the maximum extent practicable.
..
24. Removal of Temporary Fills. -.Any temporary fills must be removed in their entirety and
the affected areas returned to their preexisting elevation.
ude ..
25. Designated Critical Resource Waters: Cnticalsesource waters mcl , .
NOAA-designated marine sanctuaries, National Estuarine Research~Reserves, National Wild and
Scenic Rivers; critical habitat for Federallylisted threatened and endangered species; coral reefs,
state natuxal heritage sites; and outstanding national resource waters ~or• otYier waters officially
designated by a state as having particular environmental or ecological significance and identified
by the District Engineer after notice and opportunity .for public comment. The DistrictEngineer
may also designate additional critical resource waters after notice and opportunity for comment
' a. Except as noted below, discharges of dredged or fill material into waters of the US
are not authorized by NWPs 7, 12,14, i 6; 17, 21; 29, 31, 35, 39, 40,42, 43, and 44 for any
activity within, oz directly affecting, .critical resource waters, including wetlands adjacent to such
waters. Discharges of dredged or fill materials into waters of the US maybe authorized by the
above NWPs in National Wild and Scenic Rivers ff the activity complies with General Condition
7. Further, such discharges-may be authorrized in designated critical habitat for Federally listed
' threatened or endangered species if the activity complies with General Condition 11 and the
USFWS or the NMFS has- concurred in a determination of compliance with this condition:
• b.. For NWPs 3; 8, 10, 13, 15, 18, 19, 22, 23, 25, 27; 28, 30, 33, 34, 36, 37, and 38, -
notification is required in accordance with General Condition 13, for any:activity proposed in the
designated critical resource waters including wetlands adjacent to those waters.; The District
Engineer may authorize activities under these NWPs only after. it is determined that the impacts:
to the critical resource waters will be no more than minimal.
26. Fills Within 100-Year Floodplains. For purposes of this General Condition, 100-yeas
floodplains will be identified. through the existing Federal Emergency Management Agency's
(FEMA) Flood Insurance Rate Maps or FEMA-approved local floodplain maps.
a. Discharges in Floodplain; Below Headwaters. Discharges of dredged or fill material
into waters of the US within the mapped l 00year flaodplain; below headwaters (i.e. -five cfs},
14

resultin in ermanent above- ade fills, are not authorized by NWPs 39, 40, 42, 43, and 44.
g P f~
b. Discharges in Floodway; Above Headwaters. Discharges of dredged or fill material
into waters of the US-within the FEMA or locally mapped floodway, resulting in permanent
.above-grade fills, are not authorized by NWPs 39,.40, 42, and 44.
c. The ermittee must com I with an a Iicable FEMA-a roved state or local
P P Y Y PP PP
' floodplain management requirements.
27. Construction Penod. For activities that have not been verified by the Corps and the
project was commenced or under contract to commence by the expiration date of the NWP (or -
modification or revocation date), the work must be completed within 22-months after such, date
(including any modification that affects the project).
For activities that have been verified and the project was commenced or-under contract. to .
commence within the. verification period, the work must be completed by the date. determined by
the Corps....
.~...
For projects that have been verified by the Corps, an extension of a Corps approved
completion `date maybe requested. This request must be submitted at least one month before the
previously approved completion date.
FURTAER INFORMATION
1.:District. Engineers have authority to determine if an activity complies .with the terms and ~ .
conditions of a NWP. : .
2. NWPs do not obviate the need to obtain other Federal, State, or local permits, approvals, or
authorizations required by Iaw.
3. NWPs do not grant any property rights or exclusive privileges.
4. NWPs do not authorize any injury to the property or rights of others.
5. NWPs do not authorize interference with any existing or proposed Federal project.
DEFINITIONS
Best Mana.~ement Practices (BMPs): BMPs are policies, practices, procedures, or structures
implemented to mitigate the adverse environmental effects on surface water quality resulting
from development. BMPs are categorized as structural or nonstructural:. A BMP policy may
affect the limits on a development_
15.

Compensatory Miti a~ tion: For purposes of Section 10/404, compensatory mitigation is the
t restoration,-creation, enhancement, or in exceptional circumstances; preservation of wetlands
and/or other aquatic resources for the purpose of compensating -for unavoidable adverse impacts,

t which remain, after all appropriate-and practicable avoidance and minimization.has been
achieved.
' Creation: The establishment of a wetland or other aquatic resource where one did not formerly
exist.
Enhancement: Activities conducted in existing wetlands or other aquatic resources that increase
one or more aquatic fiinctions.
Ephemeral Stream: An ephemeral stream has flowing water only during and for a short duration
after; precipitation events in a typical year.::Ephemeral stream beds are located above the water
table year-round. Groundwater is not a source of-water for the: stream.. Runnofffrom rainfall is
the primary source of water for stream flow_
Farm Tract: A unit of contiguous land under one ownership that as operated ~as a farm or part of
a farm,.
Flood Fringe: That portion of the 100-year floodplain outside of the floodway (often referred to
as "floodway fringe").
Floodway: The area regulated by Federal, state, or local requirements to provide for the
discharge of the base flood so the cumulative increase in water surface elevation is no more than
a designated amount (not to exceed one foot as set by the National Flood Insurance Program)
within the I00-year floodplain.
Independent Utility: A test to determine what constitutes a single and complete project in the.
Corps regulatory program. A project is considered to have independent utility if it would be
constructed absent the construction of other projects in the project area.- Portions of a multi- ~ .
phase project that depend upon other phases of the project do not have independent utility.
Phases of a project that would be constructed even if the other phases were not built can be
considered as separate single and complete projects with independent utility.
Intermittent Stream: An internttent stream has flowing water during certain times of the year,
when groundwater provides water for stream flow.. During dry periods, intermittent streams may
not have flowing water. Runoff from rainfall is a supplemental source of water for stream flow.
Loss of waters o the US: Waters of the US that include the filled area and other waters that are
permanently adversely affected by flooding, excavation, or drainage because of the regulated
activity. Permanent adverse effects include permanent above-grade, at-grade, or below-grade
' fills that change an aquatic area to dry land, increase the bottom elevation of a waterbody, or
16
r

change the use of a waterbody.. The acreage of loss of waters of the US is the threshold
measurement ofthe impact to existing waters for determ;,,ing whether a project may qualify.for a
NWP; it. is not a net threshold that•is calculated after considering compensatory mitigation that
maybe used to offset losses of aquatic functions and values. The-loss of stream bed includes the
linear feet of stream bed that is filled or excavated.. Waters of the US temporarily filled, flooded,
excavated, or drained, but restored to preconstructioncomours and elevations••after construction,
are not included in the measurement of loss of waters of the US. Impacts to ephemeral waters
are only not included in the acreage or linear foot measurements of loss of waters of the US or
loss of stream bed, for the purpose of determining compliance with the threshold limits of the
NWPs. •
Non-tidal Wetland: An area that, during a year with normal patterns of precipitation has standing
or flowing water for sufficient duration to establish an ordinary high water mark. Aquatic
vegetation within the area of standing or flowing water is either non-emergent, sparse, or absent.
Vegetated shallows are considered to be open waters. The term "open water" includes rivers,.
- streams, Lakes; and ponds. For the purposes of the NWPs, this term does not include ephemeral
' waters.
Perennial Stream: A perennial stream has flowing water year-round during a typical year. The
water table is located above the stream bed for the most of the year. Groundwater is the primary
source of water: for stream flow. Runoff from rainfall is a supplemental source of water for
stream flow.
Permanent Above-grade Fill: _ A discharge of dredged or fill material into waters of the .US,
including wetlands, that results in a substantial increase in ground elevation and permanently
converts part or all of the waterbody to dry land. Structural fills authorized by NWPs 3, 25, ~6,
etc. are not included.
Preservation:. The protection of ecologically important wetlands or other aquatic resources in
perpetuity through the inaplemen#a.Yion of appropriate legal and physical mechanisms.
Preservation may include protection of upland areas adjacent to wetlands as necessary to:ensure
protection and/or enhancement of the overall aquatic ecosystem.
Restoration: Re-establishment of wetland and/or other aquatic resource characteristics and::
function(s) at a site where they have ceased to exist, or exist in a substantially degraded state.
Ri e and Pool Complex:. Riffle and pool complexes are special aquatic sites under the 404(b}(1)
Guidelines. Riffie and pool complexes sometimes characterize steep gradient sections of
streams. Such stream sections are recognizable by their hydraulic characteristics. The rapid
movement of water over a course substrate in riffles results in a rough flow, a turbulent surface
and high dissolved oxygen levels in the water. Pools are deeper areas associated with riffles. A
' slower stream velocity, a streaming flow, a smooth surface, and a finer substrate characterize
pools.
17
1
1

1
r~
1
1

1

r~
Single and Complete Proiect:.•The term "single-and complete project" is.defuxed at 33 CFR
330.2(1) as=the total-project proposed--or accomplished by one owner/developer.or.partnership or
other association of owners/developers .(see definition of independent utility). For linear
projects, the "single: and complete project" (i.e., a single and complete crossing) will apply to
each crossing of a sepazate water of the US (i.e.; a single waterbody} at that location. An
exception,is for linear projects crossing a single waterbody several times at.separate and distant
locations; each crossing is considered a single and complete project.However; individual
channels in a braided stream or river, or individual arms of a large, irregularly shaped wetland or
lake,- etc., are not separate waterbodies.
Stormwater Management: Stonnwater management is the mechanism for controlling stormwater
runoff for the purposes of reducing downstream erosion;. water quality degradation, and flooding
and mitigating the adverse effects of changes inland use on the aquatic.environment.
Stormwater Management Facilities: Stormwater•management~facilitie5.azethose facilities,
including but not limited to, stormwater retention and detention.ponds and.BMPs; which retain
water for a period of time to control runoff and/or improve the quality (i.e., by reducing the
concentration of nutrients, sediments, hazardous substances.and other.pollutants) of stormwater
nuioff.
Stream Channelization: The manipulation of a stream channel to increase the rate of water flow
through the stream channel. Manipulation may include deepening, widening, straightening,
armoring, or other activities that change the stream cross-section ox other aspects of stream.
channel geometry to increase the rate of water flowthrough-the stream channel. A channelized
stream xemains a water of the US; despite the modifications to increase the rate of water flow.'
Tidal YYetland.• A tidal wetland is a wetland (i.e., water of the US) that is inundated by tidal
waters. The defmitions of a wetland and tidal waters can be found at 33 CFR 328.3(b) and 33
CFR 328.3(f), respectively. Tidal waters rise and fall in a predictable and measurable rhythm or
cycle due to the gravitational pulls of the moon and sun_ Tidal waters end where the rise and fall
of the water surface can no longer be practically measured in a predictable rhythm due to
masking by other waters, wind, or other effects. Tidal wetlands are located cliannelwazd of the
high tide Line (i.e., spring high tide line) and are inundated by tidal waters two times per Lunar
month; .during spring high tides.
Vegetated Buffer: A vegetated upland or wetland area next to rivers, streams, lakes, or other
-open waters, which separates ahe-open water from developed areas, including agricultural land... ;:
Vegetated buffers provide a variety of aquatic habitat functions and values (e.g., aquatic habitat
for fish-and other aquatic organisms, moderation of water temperature changes, and detritus for
aquatic food webs) and help improve or maintain local water quality. A vegetated buffer can be
established by maintaining an existing vegetated area or planting native trees, shrubs, and
herbaceous plants on land next to openwaters. Mowed lawns are not.considered vegetated
buffers because they provide little or no aquatic habitat functions and values. The establishment
and maintenance of vegetated buffers I a method of compensatory mitigation that can be used in
18

conjunction with the restoration, creation, enhancement or preservation of aquatic habitats to
ensure that activities authorized by NWPs result in minimal adverse effects to the aquatic
environment. -(See. General. Condition 19.)
Vegetated Shallows: Vegetated,shallows aze special aquatic sites under the 404(b)(1}Guidelines.
They are areas that aze permanently inundated and under normal circumstances have rooted .
aquatic vegetation, such as seagrasses in marine and estuarine systems and a variety of vascular
rooted plants in freshwater systems.
Waterbo A waterbody is any area that in a normal year has water flowing or standing above .
ground to the extent that evidence of an ordinary high. water mazk is established. Wetlands
contiguous to the waterbody are considered part of the waterbody.
' .. ... FINAL REGIONAL CONDITIONS FOR NATIONWIDE PERMITS IN THE
~_ ~•~ WILMINGTON DISTRICT
1. Waters Excluded from NWP or Subject to Additional Notification Requirements:
' .are:
a. The Corps identified waters that will be excluded from use of this NWP. These. waters
1. Discharges into Waters of the United States designated by either the North Carolina. .
Division of Marine Fisheries (NCDMF) or the North Carolina Wildlife Resources Conunission
{NCWRC) as anadromous fish spawning area are prohibited during the period between.February
15 and June 30, without prior writEen approval from NCDMF or NCWRC and the.Corps.
2. Discharges pinto Waters of the United States designated as stuxgeon spawning areas
aze prohibited during the period between February 1 and June 30, without prior written approval
from the National Marine Fisheries Service (NMFS).
b. The Corps identified waters that will be subject to additional notification. requirements for
activities authorized by this NWP. _ These waters are:
1. Prior to the use of any NWP.in any of the following North Carolina designated
waters, applicants- must comply with Nationwide Permit, General Condition .13: ~ In addition; the
applicant must furnish.a written statement of compliance .with all of the conditions of the
applicable Nationwide Permit. -The North ,Carolina designated waters that require additional:
notification requirements are "Outstanding Resource Waters" {ORW) and "High Quality Waters"
(HQW) {as defined by the North Cazolina Division of Water Quality), or "lniand Primary
Nursery Areas" (IPNA) (as defined by the North Carolina Wildlife Resources Commission), or
contiguous wetlands {as defined by the North Carolina Division of'Water Quality), or "Primary
Nursery Areas" {PNA) (as defined by the North Cazolina Division of Marine Fisheries).
19

2. Applicants for any NtiVP in a designated "Area of Environmental Concern" (AEC} in
the twenty (20) coastal counties'of Eastern North Carolina~covered by-the North Carolina.Coastal
Area Management Act (LAMA}, must also obtain the required CAMA~permit.~ Construction '
activities may not commence until a copy of the approved CAMA permit is furnished to the
. ~- :appropriate-Wilmington District Regulatory Field Office (Wilmington Field Office - P.O. Box
1890;~Wihnington, NC 28402 or Washington Field Office -P.O.~Box 1000, Washington, NC
278$9) .for authorization to begin work.'
' 3. Prior to the use of any NWP on a Barrier Island of North Carolina, applicants must
comply with Nationwide Fermit General Condition 13. In addition, the applicant shall furnish a
written §tatement of compliance .with all of the conditions listed of the applicable Nationwide
Permit.
4. Prior to the use of any NWP in a "Mountain or Piedmont Bog" of North Carolina,
applicants: shall comply with Nationwide Permit General Condition 13: ~ln.addition; .the applicant
shall furnish a written statement of compliance with all of the.conditions listed of the applicable
NWP
Note: The following wetland comriaunity types identified in the N.C. Natural Heritage Program
document; "Classification of Natural communities of North Carolina (Michael P. Schafale and
i Alan S. Weattley,1990), are subject to this regional condition.
Mountain Bois Piedmont Bois
Swaanp Forest-Bog Complex Upland Depression Swamp Forest
Swamp Forest-Bog Complex (Spruce Subtype)
Southern Appalachian Bog (Northern Subtype)
Southern Appalachian Bog (Southern Subtype}
Southern Appalachian Fen
S. Prior to the use of any NWP in Mountain Trout Waters within twenty-five. (2S}
designated counties of North Carolina,. applicants shall comply with Nationwide General
Condition •13. In addition, the applicant shall furnish a written statement "of compliance with all
i of the conditions listed of the applicable NWP. Notification will include a letter of comments
and recommendations from the North Carolina Wildlife Resources Commission (NCWRC), the
.location of work, a delineation of wetlands, a discussion of alternatives.to working in the
Mountain Trout~Waters; whyother aitematives were not selected, and a plan to provide
compensatory mitigation for all unavoidable adverse impacts to the Mountain Trout Waters. To
facilitate-coordination with the NCWRC, the.proponent may provide a copy of the notification to
the NCWRC concurrent with the notification to the District Engineer. The NCWRC will
respond both to the proponent and directly to the Corps of Engineers:
i The twenty-five (2S) designated counties are:
Alleghany ~ Ashe Avery. Yancey ~ .
Buncombe Burke Caldwell Wilkes
ao

C!
Cherokee ~ Clay . Graham . Swain
Haywood - ::.:Henderson Jackson . Surry
Macon . Madison .McDowell Stokes.
Mitchell Polk Rutherford .
. Transylvania -Watauga
..
. 6. Applicants shall notify the NCDENR Shellfish Sanitation Section prior to dredging in
or removing sediment from an azea closed to shell fishing where the effluent maybe xeleased to
t an azea open for shell fishing or swimming in order to avoid contamination of the disposal area
and allow a temporary shellfish closure to be made. Any disposal of sand to the beach should
occur between November 1 and Apri130 when recreational usage is low. Only clean sand should
be used and no dredged sand from closed shell fishing areas. If beach disposal was to occur at
. times other than stated above or if sand from a closed shed fishing area is to be used, a swim
advisory shall be posted and a press release shall be made. ,NCDENR Shellfish Sanitation
Section must.be notified before commencing this activity.
2. List of Final Corps Regional Modifications and Conditions for Ail Nationwide Permits
a. Individual or multiple NWPs may not be used for activities that result in the cumulative .
loss or degradation of grey#er than 300 total lineaz feet of perennial streambed or intermittent
streambed that exhibits important aquatic function(s). .
b. Prior to the use of any NWP (except l3, 27, and 39) for-any activity that has more than a
total of 150 total lineaz feet of perennial streambed impacts or intermittent streambed impacts.{if
'the intermittent stream has important aquatic function}, the applicant must comply with
Nationwide Permit General Condition 13. In addition, the applicant shall famish a:written
statement of compliance with all of the conditions listed of the applicable NWP. Compensatory
mitigation is typically required for any impact that requires such notification: (Note: The Corps
uses the Intermittent.Channel Evaluation Form, located with Permit Information on the - .
Regulatory Program Web Site, to aid in the determination. of the intermittent channel stream
status. Also, NWPs.l3; 27 and 39 have specific reporting requirements.] -
' c. For all Nationwide Permits which allow .the use of concrete as a building material,
measures will be taken to-prevent live or fresh concrete; including bags of uncured concrete,
from coming into contact with waters of the state until the concrete has hardened_
d. For alI Nationwide Permits that allow-for the use of riprap material for bank stabilization,
filter cloth must be placed underneath the riprap as an additional requirement of its use in North
,~ Carolina waters. -
e. For all NWPs that involve the construction of culverts, measures will be included in the ~ .
S construction that will promote the safe passage offish and other aquatic organisms.
- All culverts in the 20 CAMA coastal counties must be buried to a' depth of one foot.below the
xna~gy
Approach Fa71 Hsukfiill'
Culvert bazied
below staambed
to appropriate
Stseam depth
Hottom

bed of the stream or wetland. For all •culvert construction-activities, the dimension, pattern, and
profile of the stream, (above -and below a pipe or culvert), should not be modified by widening
the stream channel or by reducing the depth of the stream.Culvert inverts will be buried at least
one foot below the bed of the stream for culverts greater than 48 inches ~n diameter. For.culverts
48 inches in diameter or smaller, culverts must be buried below the bed:of the.stream to a depth
equal to or greater than 20 percent of the diameter of the culvert. Bottomless arch culverts will
.satisfy this condition. ~A waiver from the depth specifications in this Regional-Conditionmay be
requested in writing.: The waiver will only be issued if it can be demonstrated that the impacts of
complying with this Regional Condition wouid~result in more adverse impacts to the aquatic
environment.
3. Additional Regional Conditions Applicable to this Nationwide Permit
a. Discharges in wetlands and in perennial streams for stormwater management facilities are
prohibited under this NWP.
b. Single-family recreational facilities are not authorized under NWP 39.
Recreational facilities, if they are incorporated into and serving an entire residential, commercial,
or institutional development, can be authorized by this NWP.
NORTH CAROLINA DIVISION OF WATER QUALITY
GENERAL~CERTIFICATION CONDITIONS
GS3362
1. Enumerating and Reporting of Impacts:
a: Streams -Impacts to streams as determined by the Division of Water Qualify shall be
measured as length of the centerline of the normal flow channel. Permanent and%r temporary
i - stream impacts shall be enumerated on the entire project for all impacts regardless of which 404
Nationwide Permits are used. Stream relocations and streambed and/or bank hardening aze
considered to be permanent stream impacts. Any activity that results in a loss of use of stream
functions.including but not limited to filling, relocating, flooding, excavation; dredging and
' complete shading shall be considered stream impacts. Enumeration of impacts to streams shall
include streams enclosed bybottomless culverts, bottomless arches or other spanning structures
when a 404 Permit is used anywhere in a project unless the entire structure (including
construction impacts) spans-the entire bed and both banks of the stream, is only used for a road,
driveway: or path crossing, and is not mitered to follow the stream pattem. Impacts for dam
footprints and flooding will count toward the threshold for stream impacts, but flooding upstream
of the dam will not (as long as no filling, excavation, relocation or other modification of the
existing stream dimension, pattern or profile occurs) count towards mitigation.
b. Wetlands -Impacts to wetlands as determined by the Division of Water Quality shall be
measured as azea. Permanent and/or temporary wetland impacts shall be enumerated on the entire
22
. _ ...

f
ii

n

project.for all impacts regardless of which 404 Nationwide.Permits are.used. Any activity that
results in a loss. of use of.wetland functions including but not limited to filling, excavating,
draining, and #3ooding shall be considered wetland impacts..Enumeration of impacts to wetlands
shall include-activities that change. the hydrology of a wetland when a 404 Permit is used
anywhere in a protect.. .
c. Lakes and Ponds -Impacts to waters other than streams and wetlands as determined by
the Division of:Water Quality shall be measured as area. Permanent and/or temporary water
impacts shall be enumerated on the entire project for. all impacts proposed regardless of which .
404 Nationwide Permits are used. Any activity that results in a loss of use of aquatic functions
including but not .limited to filling and dredging shall be considered waters impacts. Application
Thresholds -Stream, wetland and water impacts that exceed any of the thresholds below require
a complete application and written concurrence to use this. Certification:
Total ,stream impacts of greater or equal to 150 cumulative feet of stream length for the. .
entire project require written notification to and approval by the Division of Water Quality, .
and/or fir:..:; ;
Impacts to waters of equal to or greater than 1 /3 of an acre require written notif cation to
and approval by the Division of Water Quality, and/or Wetland.impacts of greater or equal to i/3
of an acre east of i-95 and 1/10 of an acre .west of I-95 require written notification to and- .
approval by the Division of Water Quality except as specified below: Any. impacts to wetlands
adjacent to waters designated as ORW, SA, WS-I; WS-II or Trout or aze designated as a North .
Cazolina or National Wild and Scenic River and wetlands classified as SWL and/or UWL as well
as wetlands described in 15A NCAC 2H .0506 (e), require a complete application and written
concurrence from the Division of Water Qualityto use this Certification. These.thresholds apply
for the. entire project. regardless of the number of Nationwide. Permits applicable to the
Certification that are issued by the USACE for the project;'
Written notification to DWQ. is required for all applications that propose to use .
Nationwide Permit 18. This notification requirement will be satisfied by providing two {2}.copies
of the PCN form to DWQ at the same time that the PCN form is sent to the US Aimy Corps of
Engineers. A formal application and fee is not required unless DWQ decides that an Individual
Certification will be required for the project. In this case,.the applicant will be notified in writing
from DWQ within 30 days of the receipt of the written notification. ~ - . , .
Proposed fill or substantial. modification of any amount of wetlands classified in
accordance with 15A NCAC 2B .O 101(e){'~ as Unique Wetlands (UWL) shall require written -
concurrence from the Division of Water Quality;
2. Impacts to any stream length in the. Neuse, Tar-Pamlico or Randleman River Basins (or any
other major river basins with Riparian Area Protection Rules [Buffer Rules] in effect at the time
of application) requires written concurrence for this Certification from DWQ in accordance with
1 SA NCAC 2B.0200. Activities-listed as "exempt"-from these rules do not need to apply for
23

' written concurrence under this Certification. New develo meat act'vi 'e c t
p i h s Io a ed in the protected
50-foot wide riparian areas (whether jurisdictional wetlands or not) within the Neuse and Taz-
Pamlico River Basins shall~be limited to `5uses" identified within and constructed in accordance
with 15A.NCAC 2B :0200. All new development shall -be located, designed,-constructed, and
maintained to have minimal disturbance to protect water quality to the maximum extent
" practicable through the use of best management practices;
3. Additional site-specif c stormwater management requirements maybe added to this "
Certification at DWQ's discretion on a case-by-case basis for projects that have or aze anticipated
to have impervious cover of greater than 30 percent. Srte-specific stormwafer management shall
be designed to remove 85% TSS according to the latest version of DWQ's Stormwater Best "
Management Practices manual "at a minimum. Additionally, in watersheds within' one mile and
draining to 303(d) listed waters; as well as watersheds that are. classified as nutrient sensitive
waters (NSW), water supply waters (WS), trout waters (Tr), high quality waters (HQW), and
outstanding resource waters (ORW), the Division shall require that "extended detention wetlands,
bio-retention areas, and ponds followed by forested""filter-strips (designed according toaatesf
version of the NC DENR Stormwater Best Management Practices 1VIanua1) be constructed as part
I of the stormwater management plan when asite-specific stormwater management plan is
required. For streams classified as Water Supply, Nigh Quality Waters and Outstanding-
Resource Waters, post-construction, on-site stormwater management shall be required as
appropriate and as outlined in 15A NCAC 2B :0104(m) and 2H .1000 #o .1007, respectigely; in
addition to.that required in this General- Certification. Alternative designs maybe requested by
the applicant and will be reviewed on a case-by-case basis by the Division of Water Quality:
Approval of stormwater management plans by the Division of Watez Quality's other existing '
state stormwater programs including appropriate local programs are sufficient to satisfy this
Condition as long as the stormwater management plans meet or exceed the design requirements
specified in this condition. This condition applies unless mare stringent requirements are in effect
from other state water quality programs.
Unless specified otherwise in the approval letter, the final, written stormwater management
plan shall'be approved in writing by the Division of Water Quality's Wetlands Unit before the
impacts specified in this Certification occur: "
The facilities must be designedao treat the runoff from-the entire project, unless otherwise-
explicitly approved by the Division of Water Quality. -
Also, before an ermanent buildin or other structttre is occu led at the sub'ect site the
yP g P J
facilities (as approved by the Wetlands Unit) shall be construeted and operational, and the
stormwater management plan (as approved by the Wetlands Unit) shall be implemented.
'The structural storniwater practices as approved by the Wetlands Unit as well as drainage
patterns must be maintained in perpetuity.
No changes to the structural stormwater practices shall be made without written authorization
' 24

'li
from the Division of Water Quality.

i

l

1
1
i
1
4. -Compensatory stream mitigation shall be required at a 1:1 ratio for all perennial and
intermittent stream impacts equal to or exceeding 150 feet and that require application to_ DWQ
in watersheds classified as ORW, HQW, Tr, WS-I and WS-II;
5. In accordance with North Carolina General Statute Section 143-215.3D(e), any application for
a 401 Water Quality Certification must include the appropriate fee. If a project also requires a
CAMA Permit, one payment to both agencies shall be submitted and will be the higher of the
two fees;
6. In accordance with 15A NCAC 2H .0506 (h) compensatory mitigation maybe required for
impacts to 150. linear feet or more of streams and/or one acre or more of wetlands for an entire
project. For linear public transportation projects, impacts equal to or exceeding 150 feet per
stream may~rcquire mitigation. In addition, buffer mitigation may be required for any project with
Riparian Area Protection Rules (Buffer Rules) in effect at the time of application for buffer
impacts resulting from activities classified as "allowable with mitigation" within the "Table of
Uses" section :of~the Buff. er Rules or require a .variance under the Buffer Rules. A determination
of buffer, wetland and stream mitigation requirements shall be made for .any Certification for-this .
Nationwide Permit. The most current design and monitoring protocols from DWQ shall be
followed and written plans submitted for DWQ approval as required in those protocols. When:
compensatory mitigation is required for a project, the mitigation plans must be approved by.
DWQ,in writing before the impacts approved by the~Ceriification occur, unless otherwise
specified in the approval letter. The mitigation .plan must be implemented and/or constructed
before any permanent building or stricture on site is occupied, In the case of public road projects,
the mitigation plan must lie implemented beforethe road is opened to the traveling public. Please
note that if a stream relocation is conducted as a stream restoration as defined in.The Internal
Technical Guide for Stream Work in North Carolina, Apri12001, the restored length can be used
as compensatory mitigation for the impacts resulting from the relocation;
7. For any project involving re-alignment of streams,.a stream relocation plan must be included
with the 401 application for written DWQ approval. Relocated stream designs should include the
same dimensions, patterns and profiles as the existing channel (or a stable reference reach if the
existing channel is unstable}, to the maximum extent practical. The new channel should be . ~ .
constructed in the dry and water shall not be turned into the new channel.until the bank§ are
stabilized. Vegetation used for bank stabilization shall be limited to native woody species, and
should. include establishment of a 30 foot wide wooded and an adjacent 20 foot wide vegetated
buffer on both sides of the relocated channel to the maximum extent practical. A transitional
phase incorporating coir fiber and seedling establishment is allowable. Also, rip-rap, A-Jacks,
concrete, gabions or other hard structures maybe allowed if it is necessary to maintain the
physical integrity of the stream, but the applicant mustprovide .written justification and' any
calculations used to determine the extent of rip-rap coverage requested. If suitable stream
mitigation is not practical on-site, then stream. impact will need to be mitigated elsewhere. Please. .
note that if a stream. relocation is conducted as a stream restoration as defined in The Internal
25

ii
' Technical Cruide for Stream Work in 1Vorth Carolina, Apri12001;'the restored len can be used
i~
as compensatory mitigation for the impacts resulting from the relocation;
t 8:.-PIacement of culverts and other structures in waters,~streams, and wetlands must be laced '
P
below .the. elevation of the streambed to allow low flow passage of water and aquatic life' unless it
can be shown to DWQ that providing passage would be impractical. Design and placement of
culverts including open bottom or bottomless arch culverts and other structures including
temporary.erosion control measures shall not be conducted in a manner that may result in
' aggradation, degradation or significant changes in hydrology of wetlands or stream beds or
banks, adjacent to or upstream and down stream of the above structures. The applicant is required
to provide evidence that the equilibrium shall be maintained if requested to do so in writing by
' DWQ. Additionally, when roadways, causeways or other fill projects ate constructed across
FEMA-designated floodways or wetlands, openings such as culverts or bridges must be provided
to maintain the natural hydrology of the system as =well as prevent-constriction of the floodway
' ~ that may result in aggradation; degradation orsignificant changes in hydrology ofstreams or
.wetlands; ~ -
' 9. That appropriate sediment and erosion control practices which equal or exceed those outlined
in. the most recent version of the "Nortri Carolina Sediment and Erosion Control Planning and
Design"Manual" or the "North Cazolina Surface Mining Manual" whichever is-more appropriate
(available from the Division of Land Resources (DLR) in the DENR Regional br Central Offices} ,
shall be in full compliance with all specifications governing the proper design; installation and
operation and maintenance of such Best Management Practices th order to assure compliance
' with the appropriate .turbidity water quality standard;
10. All sediment and erosion control measures placed in wetlands and waters shall be removed
and the original grade restored within two months after the Division of Land Resources has
released the project; -
11. That additional site-specific conditions maybe added to projects proposed under this
Certification in order to ensure compliance with all applicable water quality and effluent
standards;
' 12. Measures shall betaken to prevent live or fresh concrete from eomin into contact with •
g
waters of the state until the concrete: has hardened;
' 13. If an environmental document is re aired this Certification is not valid until a Findin
q g of No
Significant Impact (FONSI) or Record of Decision (ROD) is issued by the State Clearinghouse;
14. If this Certification is used to access buildin sites all lots owned b the a licant must be
g ~ Y PP
buildable without additional fill beyond that explicitly allowed under other General
Certifications. The applicant is required to provide evidence that the lots are buildable without
requiring additional impacts to wetlands, waters or buffers if required to do so in writing by
DWQ. For road construction purposes, this Certif cation shall only be utilized from natural high
26•

C
' ground to natural high ground;
15. Deed notifications or similar mechanisms shall be placed on all lots with remaining
jurisdictional wetlands and waters or areas within 50 feet of all streams.and ponds. These
mechanisms shall be put in place within 30 days of the date of issuance of the 401 Certification
letter or the issuance of the 404 Permit (whichever is later). A sample deed notification format
' can be downloaded from the 401/Wetlands Unit web site at http://h2o.enr.state.nc.us/ncwetlands.
DWQ shall be sent copies of aII deed restrictions applied to these lots;
' 16. When written concurrence is required, the applicant is required to use the most recent
version of the Certification of Completion form to notify DWQ when all work included in the
' 401 Certif cation has been completed;
17. Concurrence~from DWQ that.this Certification applies to an individual project shall expire
' three years from-:the date of the cover letter from DWQ or on the same day as the expiration date
of the corresponding Nationwide Permit 39, whichever is sooner.
' NORTH CAROLINA DIVISION OF COASTAL MANAGEMENT
STATE CONSISTENCY
' Consistent.
' Citations: .
2002 Nationwide Permits -Federal Register Notice 15 Jan 2002
2002 Nationwide Permits Corrections -Federal Register Notice 13 Feb 2002
' 2002 Regional Conditions -Authorized 17 May 2002
27

L

ii

JDE MAP
STORMWATER MANAGEMENT CALCULATIONS
Wal-Mart -Raleigh SE (Su~znybrook)

Q
~ ~ ~ a~i~~ ~ .~ ~
isi ~
~ 1 /- .,
~ ~5g~~i ~ 4 m ~ e
e *<O ~e ow^~~
W I a
O ~ ~~ ~~ - N~ ~ Urj~~~
5 6y~y~Y • w ~ o ~W6a
p Ql~ia ~ ry~ ~ 3c.
gs~~~ ~ e
ig
e1~1 ~ ~ ~ ~
~~
/
~b ~b
~\ '
~--1G/ 1 ~It ly ~a •-~ 1 // ~i~ S
~ L
- a ~ @g~~ d 1 // ~+~ i
-~' ~~~~ 11111 ~EyV ~~P~' 1\ /// x~gY+'4 -___________~bi,.'~c~
~ CIS /~_______il~~x~ Vf
' ~-'~" ~ a 1 1 I1 pvAJ s`_T,.p~~°e /lady J ~'~Xn IJrJ /i
/ ~ •~1 / i
- ~' ~ ~ O 11 SOONIY~~~YIG~ ~ ~ 1
- Qy ~ ~~ Ali
~/ a 1 •\ 1 ~ IY 'I
W ` 1 1 W - ~1!
~ 1 1 \ 1 / ' ~ la
~ ~~ 1 11 '\ 1 / a
o • ~ 01~ 1 1~. 1 1
o ~ 1 i' o Yi
m'
~ ~ ,~ ~~a 1 1 ~ ~ ~ ~ ~ I~1
~~~~d Z~ 1 1` •1 1 ~^~'~n 1~1
Y a ~ 1 ~ \ Kn m~ 1 1~'
7 °c 1 . 11 ~ 00 ~ °d I \
N ~ 1 \ o~ `~
~- ~ \ s^° ~
,--
_ "~`
~'
-~- 1~1 \~
i ' 1 1 1
i '" 1 1
i
'' 1 •\ ~
` 1
U
p Z •~ ~ \ •1
~, - 1 $ ~ 1 ~ 1 IPA ~
~v~x~ ~ 1
~_~~~~ /~ ~~ ~ ' ~'~~~ ~ ern
I
~ I
/ I
/// I
I
I
/
/
/
/
/
/
/
/
/
/
~qd• ///
,/
cM1 av
L
I
I
I
I
I
~~~
Q I
~'
~~
I
i
I
I
I
I
I
I
' I
I
I '
I o.
s'~ I
I
I
I
1
I
I
I
I
I
I
~I
I
~° I
~ I
~ I
~.3~a
Z~ipffi~~ \' _\ ~1 1 Tj~.ll ~ ~ ~~~'
d 6gg gg d C \,~ID 1
W~ °03 39 1 1 -bi~ 1 ~ ~ ~j Qv
.l i ~ ~ 1 ~ \ 1 w~n n
~ e 1 ~1 11 ~.~,o~ aN
~- 1 1 p ~~~
~" 1 1, •\ 11 ~ ~~
~ ''\ a
~ z~z~..
w~i~r 1 ~
I 1
~U~~ 1 ,` \ 111
s ~ \ ~ \
/ " ~ •\ 11
•\ 1
/'" e \ /- ~
\ ~ J /mf ~ 1 ,\ ~~i0 1 ~ ~\
s~.. ~ wry ~~
ti
1 oo va®W 1 ~ 1 Wm6
\ ~ -
` ~1
\ \ z ~
'~ /~i
_ /--~- ov~i Yf'~ 1 ~ ~ \ ~ may'.
~ 1~3N \ W ~ ~ \~
H U n -
Y -._
,c.
~ _ ~ _...
~ ~'~
\ W ~ 8®~ s' r, • ~~
Q' I ~ °° [C 4 ` it
11//11 h D
Z 1•,I ~ 1 W q J II I C~ e~f ~ ~ ~1 = 1 f '`' '! j\'6
jr 11V-- Z `6'&d( 1 ~ Iai "03 i C_J \\ ,2
saW
t~JQ°~ 1 ~` 1
_J ~~j ~
~

\ ? °°an
_'wuy:E I
!1 I
aS~C SegS •41
~N~
°
"~ I I~
'~ry,~ ~
Io~
N~I 1~ ~
I~~ ~ c~
I `~g
nl
~ ~o BiWrN
ZrnI IN
Z 6
~ p1RrA~ I
94t (GP I
eE ~
LL^~
°M.
' U
IF~a? ~1
. Iy~jOp ~wl ~
I ~^- I
1 ti I
O
F- ~ ~ g ~ ~
\
c~~
ae~
~•
L~~~ I p
_
~~o: z -
Iz~~~sl 3 ^ ~
I t}i18
,
IT
WZ YY
~ wBQQQz
OO OAS 7$a
~~~h
L' I
I

~d
~ ~

Imp dl
IV ~I ~

I awm 1
I O°~ 1
, a
, ~ -I
1
', I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
t ~ x~~
9
~e
~' ~
~ g~.
x
s~
_.
~. ~~
1
Y ~~
W ~
~uy

t~
_ FFS
p ea
4
1~ 7
1d qq
Fi~ q
t~R sa?
•~~ ag
ap ta
Ha ^^a
.i~ ~s
f3
~ at
d~ s~A
_9~
~~ Y~ 2
3 ~~ Y~ ~i ~~ ~il yy yy 66
i~ ~~ Y~~

r r

~j~ ~~ Ra ~ Ra cQ ~s ~71 iF A~ t~ ~R + ae ax R~A
~~ ~~ ~~ ~ 3~ ~9 ~~ 3° 3~ ~~ ~~ ~a a~ 3~ ~9 ~~~
r r r

r s

a
~ n xF n
g sa :a e~ ~a ~ s ^e st ~a s>; ~a x;>y
•~ : Fi ~. ~
_~ :~ ::I A ~~I e i= M s ,{~ ~rl d~ ad d~E
~1i 7 7i ~~ r'>< ~i ~~ t~ ~ ~~ ~~ ri~ ~~ ~',~ r27 ~~~
I~
I
~I!
~A~`.
b~1yy'
M3
I
1
1
I N
I o
~ 3
1 n
1 N
I~
1
I u
I
1
I
I
1
1
1
I
' I
I
r ~x:ate ~ ~„,~---------~
ect-leel xooe a
' - KI-CBfS i_ISIiNS '{14-ZSi6h q
1 ~ \`
1 ~ `
I ~ N ~~~pp
N ~ O
~~^-•~°,
I ~~~i~
aog~
1
1 ~~~o.
~~
I ~ G
~~~~~
Y v
~ W Z_
W
U
~~~~
3
/' /.
~,,
II
1
III
I
III
1
I
II
I
I
II y>a
1 p~
1. U~~
~.~
` ~ m
1
a~~
I ~ ^'
I OJ
I ~®~
I [C
II S
U
b-TIE:
N p6,°S2'ee' w
-----------yor.ol_
-~------r ------------- -~-
---•~-
T\
I N
o W
~
g \ sl mn )mx~i p ~
,`\ `~ (AVM-l0-1H91a ~I18fld 31BVINVA Z4Sb 'a'S'~'N) ` ~

~
~n \ ~
3e"' 1 ~
~
I..I S
a \\`
r
\
Z M
~ b

~~__•-
V \ O~IhV
fV `
a
,~ b ~
W
.,
~ `
\
~ \
Q.. U .'-. Y
r ~ ~^ . . . . ~^ . . . . . . . . . ~

' NCDENR DIVISION OF WATER QUALITY LETTER
C~

1

1
STORMWATER MANAGEMENT CALCULATIONS
Wal-Mart -Raleigh SE (Sunnybrook)

1
1
1
1
1
1
1
1
1
1
~R.'.a"
Mr. Todd Preuninger
S&EC,Inc.
11010 Raven Ridge Road
Raleigh, NC 27b14
NORTH CAROLINA DEPARTMENT OF
ENVIRONMENT AND NATURAL RESOURCES
RALEIGH REGIONAL OFFICE
I~MSION OF WATER QUALITY
November 16~
~.,
~; ~ ". ~;.
~n~~ z D ~~r~0 f, !
i-
1.
Subject: Neese River Basin
Riparian Buffer Rules
NBRRO 00-285
Rock Query Rd / Sunnybrook Rd Project
Wake County
Dear Mr. Preuninger:
Oa November 13, 2000, I conducted a site visit of the feature involved in the above
referenced project. It was determined as a result of the site visit that the water channel
present on the property is subject to the Neese River Basin: Nutrient Sensitive Waters
Management Strategy; Protection and Maintenance of Existing Riparian Areas,
Adl„il>i~~tT~~;ve Code T15A:02B.0233 (NCAC 0233). The subject water channel and the
approximate start of the neuse buffer are indicated an the attached map. The channel is an
unnamed tributary of Walnut Creek.
This office has assigned the reference number of NBRRO 00-285 to this project.
Thank you for your attention to this matter and if this Office can be of any assistance or if
you have any additional questions canceming this letter, please do not hesitate to contact
me at 571-4700 ext. 237.
Sine ly,
les Brown
Environmental Specialist
cc: John Dorncy, DWQ
~neusbuf:Iet\r1br00285.1et
MMLINY AOOR[ii: 1020 MA1L i[RY[GE CENT[II. RAL[ION, HORTN CAROLINA 27000-102!
LOCATION: ,000 6ARR[TT DRIY[. SUIT[ 70t~ RALEIGN. NC 27f0i
PNONtYii-67t-1700 FAX0t0.67t-1710
AN EOU AL O-Iro RTUNITY / AFi1RMAT/YE ACTION EMKOYER - 0016 R[CYGLCO/lOX MOi7-CONiIJM[R rAr[R
-.. i
_ {~

~ s.r. s..r...tlst o....id. ~.
1x10 Rne~ fle~4 ieJeb4lb~L Oid~ D614
. !'!ate i917t M6-8100 f~ (9194 ess9~
Ato)oat
~~~~ ~K>d~ ~odsaRfw
fiiil ~e I/idre! ly~l ~
YeC w~ww. ~.d/ara!`iY s/lr~w~r s+r..R
...y, j.,.,,. W..... ~.arr.Aei..,,....+.. I
~rn~.~..r...snw~.+~rsww~s+r..tr+W ~wM.s.
fiw. w.~r~wrV r.LM~M+~ W
ws+riM~ atrwo.~. ~
_ ... _.. iv i 1~1'
0

O
•Z

~ ~ j
a
~~
~
~
~
~~
~~ ~~
~

r

P ~
~~
o
~ a
~~
~i
','~
M
~,~
~~ _
; ~ ~ ~ a
~~

t
•`
1•
••s
~~~ ~ ~ ~ ~
Naps a+d dotaboses ars p~fie M-ormotion suppikd
by ,roriaus gorvnmerd agenctea Tt+e wtbsr and/sr Mq pVU E Fip~~r~-3
seper of the software progrom ors M ne way b^
raponsibN or febM -or tM information depktsd
hsrsir~ k+quiria eonesrning the dote should bs 0 135 270 405 540 OCT ~ Zt
drsebd ie t!r epprep-iat~ gewrrww-t ageney. ode ;, Feet
G~~
C

Projects: Scale:
easrrs t'=aooa'
~. Figure 1- US'GS site
.Mgr.: SC fG(l0100 V~l~(
Rack Quarty Rd ~ Stsv:tylxook Rd
Raleigh
1V+I3f~~- ~ z~~~'-`
USGS Topograph4ca! 1VIap (Raleigh East Quadrangle)
Soil & Environmental Coasultznts, lac.
110f0 Raven Ridge Rd.• Raleigh, NC 27614
[phone] • (919) 846-94fiT
Web Page: vvww.Sanc~C.cvm

Wake County Soil Survey (sheet 7d)
aosna t° = tuo' Flqure 2 - Soi! Sutvey site vicinity
°'"'' Kock t2uxry Fbd i~ stxvrybrook Rd [, Sail & Envimnmentat ConstilEanEs, Inc.
~.:sc ~elgh Moto ~av~, ~dga ~.• ~a~ign, Nc 2~st4
(919} 846-59pD • (9t9} $46-9467
Web Page: vwvw.S~C.com