20070566 Ver 2_Stormwater Info_20071114

Nov~14 2007 2:1$PM HP LASERJET FAX
~. X.Q o ~1- 0 5 L G Y 2 p. 1
WfTHEf~S ~[" RAVENEI_
ENGINEERS 1 PLANNERS 1 5URVEYDR`3
-FAX TRANSMITTAt-
TO: -J ~Sr,: P ~r Fax #: ~ 3 ~- ~ d' ~ '~
FROM: M1~ 7ckt~'~ ~
)OB #:
# of Sheets: ~__ Including Cover
DATE:
PRUjECT NA,'NE: ~('~gWQ~r7 ,r ~,F~~
ORIGINAL TO FOLLOW SY MAIL: ^ YES ~ NO
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iii MacKenan Drive Cary, Forth Carolina z?5u teL•gi9.469.334o fax:9t9.467.6uo8 wK~w.withersravenel.~om
hJnl.,~-1=~-2887 WE8 14: S9 TEL: [phone] NAME: DWQ-WETLANDS F. 1

NoV 14 2007 2:18PM HP LRSERJET FR}{
p.2
DRY DETENTION POND #1 ORIFICE SIZING 1
Detention Volume 13,574 cf
Q=0.6*Area(2(32.2)(Hrnax})^0.5
Use Orifice Diameter 2 in
H{rnax) 2.5 ft
BMP Outflow 0.17 cfs
Detention Volume 15,285 cf
Q=0.6"Area(2(32.2)(Nmax)}"0.5
Use Orifice Diameter 2 in
H(rnax) 3.5 ft
BMP Outflow 0.20 cfs
hJO~~!-1~}-2C~1~7 WEC~ 15:82 TEL: [phone] NAME:DWQ-WETLANDS P. 2

Nod 14 2007 2:1t3PM HP LRSERJET FRX
y, `+a

STORMWATER MANAGEMENT PERMITAPPLICATION Ft1RM
401 CERTIFICATION APPLICATION FORM
Permit No:~__0 ~ ~ ~ 7 ~ ~ ~~
(fo be assigned by DWQ)
OF W A iER
O
,3~ Y
0~~~ Y
LEVEL SPREADER, FILTER STRIP AND RESTORED RIPARIAN BUFFER SUPPLEMENT
This form must be piled out, printeal acrd submitted.
The Regrured items Checklist (Part li!) rnusf be printed, fYled out and submitted along with ail of the required information.
~; e.~...._ ~ z_~:-:z .... ..._ ,~ ",'ill. e ___ ., I ,~ G~=:=~-~q ~~'6i~1 "~'~- ~~' :~f -:
Project name Norvroad 6klfis .
Contact name Toiid Preunirger
Phone number 239-0352
Oate October 10.2007
Drainage area number BhAP i!t {Souih~rt 8MP) -~-~--.-i
{Y _ _ ---------- "~ 1
For Level Spreaders Receiving Flow From a 8MP
Type of BMP f3¢ter~tiorr Pon d
Drawdown flowfrom the 8MP q.t? ft'/sec
For Level Spreaders Reoeiving Flow from the Drainage Area Do not complete this section of the worksheet.
Drainage area 8 5 > `, ;~Az Do not complete this section of the worksheet.
Impervious surface area t.5 if A ~- Do not complete this section of the worksheet.
Percent impervious 0.18 Do notcomptete this section of the worksheet.
Rational C coefficient 11:4 Do not oornplete this section of the worksheet.
Peakflowfrom the 1 irYhr storm 3. yr3 #~J~ttt1E! R3/sec Do not complete this section of the worksheet.
Rainfall intensity, l0-yr, 24-hr storm 7,22 inlhr Do not complete this section ~ the worksheet.
Peak flow from the 10-yr, 24-hr storm Zy, SS ~,495Ci666C>7 ft3lsec Do not c~nplete this section of the worksheet.
Where Does the Level Spreader Discharge?
To a bioretention ce8?
To a wetland?
To a filter strip or riparian buffer?
C~iher (speafy)
Fitter Strip or Riparian Buffer Characteraatfon (i(applkabla)
Width of grass
Width of dense ground cover
Width of wooded vegetation
Toth width
Slope (from level lip to to top of bank)
Are any draws present?
Level Spreader (sign
Forebay surface area
Feet of level lip needed per ifs
Length based on the 1 inttir storm?
length based on the 10-yr, 24-hr storm?
Length based on the BMP discharge rate?
Design flow
Is a t~ypass device provided?
Are level spreaders in series?
Length of the level lip
N (Y or N)
N (Y or N)
Y _ (Y or N) Please complete filtersirip characterization below
0 ' ' f1
50 _ fi - ~ A"t'r~C'~o t'1.q~7r~+~ P~ f ~~ '~ 1
0 ft
50 f<
~!.5 °~6
N (Y a N) Level spreader cannot be located upslope of a draw.
`, ftz

N (Y or N)
M (Y or N)
Y (Y or N)
0:17 ft3i5eC
N (Y or N)
N (Y cr N)
j ~ ft
Form SW401-Level Spreader, FiterSuip, Restored Rrpartan Bcirer-Rev.1
A bypass device is not needed.
tRVALUE!
Level spreader is~t long enough.
p.3
Parts I. and II. Design Summary, page 1 or2
Fdrlt,i-14-LO07 WED 15:©2 TEL:[phone] NAME:DWQ-WETLANDS P. _

Nov 14 2007 2: 1t3PM HP LASERJET FRX P• 4
Permit No: _
(to be assigned by D4VQ)
-1p'n -- - - - ,} _ , -~~-' ,~ iii`, Ke , •-
Please indicate the page or plan sheet numbers where the supporting documentation can be found. An incomplete submittal package will
resuH in a request for additional information. This will decay final review and approval of the project. Initial in the space provided to
indicate the following design requhements have been met If she applicant has designated an agent, the agent may initial below. If a
requirement has not been met, attach justification.
Pagel Plan
Initials Sheet No.
!~~ ~,_ 1. Plans (1" - 50' or larger) of the entire she showing:
- Design ai ultimate build-out,
- Off-site drainage (if applicable),
- Delineated drainage basins (inGude Rational C coefficient per basin),
- Forebay ('tf applicable),
-High flow bypass system,
- M~ntenance access,
- Recorded drainage easement and public right of way (ROUY), and
- Boundaries of drainage easement.
Il~i~___ _ _ l 2. P{an details (1" = 30' or larger) for the level spreader showing:
- Forebay (if applicable),
- High lbw bypass system,
-One foot topo lines between the level lip and top of stream bank,
- Recorded drahtage easement, and
- Design at ultimate build-out.
M 4.5 . ~ 3. Suction view of the lave' spreader (1' = 20' or larger) showing:
- Underdrain system (if applicable),
-Level lip,
- Upsbpe channel, and
- Downsbpe filter fabric.
t- S 5 4. An assurance that the instated system will meet design speciificationsupcn initial operation once the
project is complete and the entire drainage area is stabilized.
r'1 L S ~ 5. A constructlon sequence that shows how the level spreader will be protected from sediment until the entire
drainage area is stabilized,
M LS ~y1.4 6. The supporting calculations. Srar~a~"~~' ~~~ "'t'`~~~'
M ~ rJ i~ 7. A copy of the signed and notarized inspection and makttenance (I&M) agreement. ~;7-'~k~~
M t~5 ~`' ~ 8. A copy of the deed restriction. ,q-r rtsY~f~'p~
Form SW4n1-Level Spreader, Fitter Strip, Restored Riparian Buffer-Rev.1
Part Ill, page 1 of 1
hJOtJ-1~-24JG_j'i WED 15: ©~ TEL: [phone] NAME: DWQ-WETLAhJDS F. 4

MaJ 14 2007 2:20PM HP LRSERJET FRX P•5
_ 1
~~
Permit No:_
(to be assigned by DWO)
o ''r
?f
p <
STORNIWATER MANAGEMENT PERMITAPPLICATION FORM
401 CERTIFICATION APPLICATION FORM
LEVEL SPREADER, FILTER STRIP AND RESTORED RIPARIAN BUFFER SUPPLEMENT
This form must be fined out, printed and submdtted.
The Required tfems Checltlist (Pad pl) must be printed, filled out and submitted along w~7h ail of the requved rnformatfon.
Project name
Contact name
Phone number
Date
Drainage area number
For Level Spreaders Receiving Flaw
Type of BMP
Drawdown flow from the BMP
Where Does the Level Spreader thstharge7
To a bioretention tali?
To a Welland?
To a fllEer snip or riparian buffe{?
Other (spedfy)
BbAP';ttT Mwthem BldP1
a BMP
Detention Pond
t).2 tt3/3etr
For level Spreaders Receiving Flow from the Drainage Area Do not complete this section of the worksheet.
Drainage area 0.8 ~1~~ Do not complete this Section of the worksheet.
Impervious surface area 0.1 ~ ~~ Do not complete this section of the worksheet.
Percent impervious 0.13 Do not axnplete th's section ok the worksheet.
Ratbnal C coat iicient 0.4 Do noii complete this section of the worksheet.
Peak fkriv from the 1 inlitr storm x.3'1- -~E! ft'Jsec Do not complete this section as iFe worksheet.
Rainfall attensity, l0-yr, 24-hr storm 7.22 in/hr Do not complete this section of tte worksheet.
Peak flow from the 10-yr, 24-hr storm _ C~3 -_ R3/sec Do not complete this section oi` the worksheet.

N: {Y or N)
N (Y or N)
Y (Y ar N)
filter Strip or Riparian Buller Characterization (if applicable)
Width of grass 0 ft
Width of der-se ground cove- t3D ft
Width of wooded vegetation ~ ft
Total width 80 ft
Slope (from bevel Gp to to top of bank) 5.25
Are any draws present? N (Y or N)
Level Spreader Design
Forebay surface area
Feet of level lip needed per cfs
Length based on the T inmr storm?
Length based on the 10-yr, 24fir stcrm?
length based on the BMP discharge rake?
Design (low
Is a bypass device provided?
Are level spreaders in series?
Length of the level tip
f#z
13 ft!(ft3/sec)
N (YorN)
N {Y or N)
Y {YorN)
D.2 ft'lsec
N {Y a N)
N (Y or N~
13 ft
Form SW401-Level Spreader, Filter SMp, Restored Riparian Buffer-Rev.1
Please complete ftlter stop characterization t>ebw.
Level spreader t~nnot be located upslope M a draw.
R bypass devtae is not needed.
#VALUEI
E.evel spreader length OK.
Parts I. a rrci 11. Design Summary, page 1 of 2
NDU-14-2007 WED '15:05 TEL:[phone] NAME:DWQ-WETLANDS P.
roan areun;rtger
233-0353 ,
November 2, 2007

Mc~~3 14 2007 2:22PM
.. ,f>~
:x, t/
HP LRSERJET FRX
p.6
Permit No:
(to be assigned by DWQ)
___, fem.,..:
Please indicate the page or plan sheet numt~ers where the supporth-g documentation can be found. An incomplete submittal package wiA
result in a request for addhional information. Thin will delay tmal review Snd approval 011 the project. initial in the space provided to
indicate the following design requ~ements have been met. If the applicant has designated an agent. the agent may irvtial below. If a
requirement has not been met, attach just cation.
Paget Plan
initials Sheet No.
`~.,~_~r' _ 1. Plans (1"• 50' orlarger) of the entire site showing:
- Design at ultimate build-out,
- Qff-sge drainage (if applicable),
- Delineated drainage basins (indude Rational C ooetncientperbasin), -~ ~~ `;,,tfc-~ ~p ~ .
- Forebay {'rf appicable),
-Nigh flow bypass system,
-Maintenance access,
- Recorded drainage easement and public right of way (R01h~, and
- Boundaries of drainage easement.
W! ~ ~ 2. Plan details (1" = 30' ar larger) far the lend spreader showing:
- Forebay {'d applicable),
- High tTow bypass system,
- One foot topo lines between the level 4p and top of stream bank,
- Recorded drainage easement, and
-Design at ultimate build-oul.
~'~ ~ 3. Section view of the level spreader (1" = 20' or larger) showing:
- Underdrain system (if applicable),
-Level lip,
- Upsbpe channel, and
`,, - Downstope filtertabric.
~1'~ ly 4. An assurance that the irastalled system wil meet design specifications upon initial operation once the
project is oamplete and the entire drainage area is stabgized.
~Ji ~. _~ 5. A constnldion sequence that shows how the level spreader will be protected from sediment until the entire
drainage area is stabilized.
fti~ ~~ P~ 6. The supporting ca~ulations.
nA~N~ 7. A copy of lire signed and notarized inspection and mantenanoe (IE~M) agreement.
fr'IL~i _ ^"( ~~J 8. A copy of the deed restriction.
Form SW401-Leval Spreader, Finer Strip, Restored Riparian Buffer-Rev.1
Part 1l I, page 1 d 1
t•Irp..:!-1~-8t~~1 r WED 15: a r TEL: [phone] NAME: DWQ-WETLANDS F. 6

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~-' INSTALL RIP RAP
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~ GEOTEXTILE LINER

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LEVEL SPREADER FROM BMP #1
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(Southern Level Spreader)
~ NTS
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LEVEL
SPREADER)
PIpE
IFlSTALL RIP RAP ,~
PER SCHEDULE wiTH,~
GE^TEXTILE LINER -~
LEVEL SPREADER FROM BMP #2
(Northern Levei Spreader}
NTS
382.00
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' I -- -~ i WITHERS LA~[' RAVENEL
~ NORWOOD BLUFFS + LEVEL SPREADER EXHlB1T ~ I ,.,~.a~.~.....~.. ,,. ..~.~ ~„~~ -
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