20070241 Ver 2_More Info Received_20080117

:.uv E.~ BURDETTE LAND CONSULTING, INC.
10212 Creedmoor Road -Raleigh, North Carolina 27615
Telephone [phone] -Fax [phone]
S
January 17, 2008
Mr. Ian McMillan
Q~c~~od~~
NC Division of Water Quality JAN 1 7 2008
Central Office ~.wA>~t~t~
401 Oversight/Express Review Permitting Unit osnHOS>'o~ATERBRANC1i
2321 Crabtree Boulevard, Suite 250
Raleigh, North Carolina 27604
RE: Request for More Information Response
Lake Glad Road Commercial, Wake County, NC
DWQ Project #: 07-0241
BLC Project #: 60104
Dear Mr. McMillan:
We received NC Division of Water Quality's (NCDWQ) request for more information on
the subject project dated October 12, 2007. Attached are five copies of a revised set of
impact maps (7 sheets), stormwater plans (4.0 - 4.4 & 5.0), worksheets, and City of
Creedmoor approval letter. One copy of the stormwater management plan approved by
the City of Creedmoor is also attached. Each item requested in the aforementioned
NCDWQ letter is addressed below.
1. Please provide calculations of the outflow from each of the proposed wet
detention ponds. The level spreaders must be designed to handle the entire
outflow from the pond.
Revised calculations of the outflow from each of the proposed wet
detention ponds are provided on the attached Site &stormwater Plan
sheet (1 of 7) and on stormwater Management Plan sheets (4.0 - 4.4 &
5.0). The revised wet detention and level spreader worksheets are also
attached.

..
' ' Mr. Ian McMillan
January 17, 2008
Page 2 of 2
2. The level spreader that receives outflow from BMP A should be moved to another
location where the filter strip has snore uniform topography.
The level spreader for BMP A has been moved to the flat area adjacent to
the wetland (See Sheet 2 of 7).
3. Please provide a copy of the stormwater management plan approval from the
Granville County Water Supply Watershed program and one copy of the
approved stormwater management plan.
We discovered that the City of Creedmoor is actually charged with
administering the Water Supply Watershed program in which this site is
located. The City of Creedmoor's letter approval of the stormwater
Management Plan is attached along with one copy of the plan.
Sincerely,
Burdette Land Consulting, Inc.
Jennife .Burdette
Environmental Specialist
c: Mark Altman -Lake Glad Road Commercial, LLC (letter only)
Eric Alsmeyer - US Army Corps of Engineers (letter only)

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STORMWATER MANAGEMENT PERMIT APPLICATION FORM I' tft:111i1t~..
401 GERTIFIGATION APPLICATION FORM
WET DETENTION BAS)N SUPPLEMENT
This form must be felted out, printed and submitted.
The Required items Checklist {Part IIIJ must be printed, tilled out and submitted along with at! of the required information.
L~;PROJECT'INFORMATION~ii~l~ll'.','I~.: ;' .,. ~ ~~,".' ~~~~~~ ~,:, .,;;,," ., ~~~, ~~~oi~.
a,
Project name Lake Glad Road Commercial
Conlaci person Ciff Credle
Phone number 919.882-2008
Dale 1118l20D7
Drainage area number l3MP A
II ~',DESIGNj~INFORMATIONI ~'ji;; ~ !I~~I~!iii ~,~ ;;!''I~ ~IH l~nli ,ii `~ ° ~", ~ . ~~ ~~~ !.~i'~ ;
Site Characteristics
Drainage area 82,330 ryz
Impervious area 80,680 ft~
impervious 97.99587028
Design rainfall depth 1.0 in
Storage Volume: Non-SR Waters
Minimum volume required ft'
Volume provided ~~
Storage Volume: 5R Waters
1-yr, 24-hr runoff depth 1 in
Pre-development 1-yr, 24-hr runoff ry'
Post-development 1-yr, 24-hr runoff 6394 fi'
Minimum volume required 6394 ry'
Volume provided 9,500 ry'
Peak Flow Calculations
Is prelpasi control of the 1-yr 24-hr peak Oow required? Y {Y or N)
1-yr, 24-hr rainfall depth 1.0 in
Rational C, pre-development 0.4 {unitless)
Rational C, post-development 0.9 {unitless)
Rainfall intensity; 1-yr, 24-hr storm 5,2 infhr
Pre-development 1-yr, 24-hr peak slow 1.6 fi'Isec
Post-development 1-yr, 24-hr peak flow 8,8 ft'lsec
PrelPosl 1-yr, 24-hr peak flaw control 7.2 ff'lsec
Basin Elevations
Basin bottom elevation 304.50 fl
Sediment cleanout elevation 305.50 ft
Permanent pool elevation 307.50 fi
Temporary pool elevation 310.50 ft
Volume and SurFace Area Calculations
SA/DA ratio 3,74 {unitless)
Permanent pool, surface area required 3,079 fiz
Permanent pool, surface area provided 3,150 rye OiC
Permanent pool volume 9,500 ry'
Average depth for SAIDA tables 3.015873016 fi OK
Forebay volume 1800 rya
Forebay % of permanent pool volume 19 % OK
Temporary pool, surface area provided fi,732 ft~
Form SW401-Wet Detenllon 6asln-Rev.2 Parts 6MP A, Page 1 of i 1

Permit
(to bo provided by r?WQj
fI;~DEStGN~INFORMATIQN~ :,,
,,.,
Orawdown Calculations
Treatment volume drawdown time 4 days OK
Treatment volume discharge rate 0,02 fl'!s
Pre-development 1-yr, 24-hr discharge 5.110 (t'/s OK
Post-development 1-yr, 24-hr discharge 0.02 fi'/s t]f(
Additional Information
Diameter of orifice 1.00 in
Design TS5 removal 85
[3asin side slopes 3 :1 OK
Vegetated shelf slope 10 :1 OK
Vegetated shelf width 10 ft OK
Length of flowpalh to width ratio 3 a OK
Length io width ratio 2 :1 OI<
Trash rack for averffow & orifice? Y (Y or N) OK
Freeboard provided 1 ft QK
Vegetated filter provided? Y {Y or N} OK
Recorded drainage easement provided? Y (Y or N) OK
Capures all runoff at ultimate build-out? Y (Y or N) DK
Drain mechanism for maintenance or emergencies 4" Gaie Valve
01(
Form SW4tl1-Wet ~etentlon Basin-Rev.2 parts eMp A, Page 2 or 11

Permit Nn
(to be prnvlded by DWDJ
S VJA7F
fns `~;_
NCDENR p~,,.,,,,,,,l,,a I,,Y
I i i 1;1:, I ~ I I I I S i Itf I I :I I ~~
~~~~Ill~:liliii:••
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
40i CERTIFICATION APPLICATION FORM
WET DETENTION BASIN SUPPLEMENT
This (arm must be riled out, printed and submitted.
The Required Items Checklist (fart 111) must be printed, tiJ1ed out and submitted along with all of tlfe required information,
,;PRQJECTiINF:O,RMATION - ~ ,, I~''
Project name Lake Glad Road Commercial
Contact person Ciif Credie
Phone number 9i4-6B2-2006
Date 11!812007
Drainage area number
BMP B
II`~iiDE51GN'[NFORMATIONi ~ -; _ ; ~ i~~ iiiii i,,, ~:,, ~ ~ ~''l C.l;1 i ~ ~, ~ I ~ _ , Sul
Site Characteristics
Drainage area
impervious area
impervious
Design rainfall depth
Storage Volum©: Non-SR Waters
Minimum volume required
Volume provided
Storage Volume: SR Waters
1-yr, 24-hr runoff depth
Pre-development 1-yr, 24-hr runoff
Post-development 1-yr, 24-hr runoff
Minimum volume required
Volume provided
Peak Fiow Calculations
Is prelpost control of the i-yr 24-hr peak flow required?
i-yr, 24-hr rainfall depth
Rational C, pro-development
Rational C, post-development
Rainfall intensity: i-yr, 24-hr storm
Pre-development 1-yr, 24-hr peak flow
Post-development 1-yr, 24-hr peak flaw
PretPost 1-yr, 24-hr peak (low control
Basin Elevations
Basin bottom elevation
Sediment cleanoul elevation
Permanent pool elevation
Temporary pool elevation
Volume and Surface Area Calculations
SAlDA ratio
Permanent pool, surface area required
Permanent pool, surface area provided
Permanent pool volume
Average depth for SA1DA tables
Forebay volume
Forebay % of permanent pool volume
Temporary pool, surface area provided
39,640 ft~
38,845 ft~
97.99445005 °/°
1.0 in
3079
3079
4.438
Y
1,0
0,4
0,9
5.2
1,7
4,3
2.6
300.00
301.00
303.00
3D6.00
ft'
fiy
in
ft3
ft'
ft3
fi'
(Y or N}
in
(unitless}
(unitless)
inlhr
ft'lsec
ft'lsec
ft'tsec
3.74 (unitless}
1,482 fiz
1,500 ftz OK
4,531 ft'
3.020666667 fi OK
90D fi'
20 % OK
2,883 ftZ
porm SW401-Wet l]etenflon Basin-Rev.2 parts eMP 8, Page 3 or 11

Permil No
(fo be provided 6y DWQ)
II.'DESIGN'INFORMATION "'~ , , '„ ,,,;,,
Drawdown Calculations
Treatment volume drawdown time 2 days OK
Treatment volume discharge rate 0.03 it'Is
Pre-development 1-yr, 24-hr discharge 5.00 fl'!s OK
Post-development 1-yr, 24-hr discharge 0.03 ft'!s OK
Additional information
Diameter of orifice
Design TSS removal
Basin side slopes
Vegetated shelf slope
Vegetated shelf width
Lenglh of flowpalh to width ratio
Lenglh to width ratio
Trash rack for overflow & orifice?
Freeboard provided
Vegetated filter provided?
Recorded drainage easement provided?
Capures all runoff at ultimate build-out?
Drain mechanism for maintenance or emergencies
1.Op in
85
3 :i
10 :1
10 fi
3 :1
2 :1
Y (Y or N)
1 ft
Y (Y or N)
Y (Y or N)
Y (Y or N}
4" Gafe Valve
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
Form sW401-Wet Delentlon Basin-Rev.2 Parts 8MP B, Page q o(11

Permit
(fo be provided by DWQJ
DoE.-W ~ 7 F~4
`n
r
NCDENR p~,,..,,,, ., .,~,,.,,~,,,
f~nn~~mm,,..
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
WET DETENTION BASIN SUPPLEMENT
This form must ba frllad out, printed and submlMed.
The Required Items Checklist (Part Il!) must be printed, filled out and submitted along with al! of the required fnfom7ation.
L"P,RUJECT,;INFORA~IATION i~~''~i,~ ~ ~I~iF(i~~i`.' '== ~~i~;~i('_" ~l~,r:' _'h ,,,
Project name Lake Glad Road Commercial
Contact person Ciff CrEdle
Phone number 919-682-2006
Date 1118!2007
Drainage area number BMP CA
i;i„ ~ ~;
if ~;DfSIGN~~INFORMATIO~tli~is,' '' ,,~,{I~ ~ y ',fib ~~-~
Site Characteristics
Drainage area 434,700 fl~
Impervious area 426,015 fig
impervious 98.00207039
Design rainfall depth 1.D in
Storage Volume: Nan-SR Waters
Minimum volume required ft'
Volume provided ft'
Storage Volume: SR Waters
1-yr, 24-hr runoff depth 1 in
Pre-development i-y~, 24-hr runoff ft'
Post-development l-yr, 24-hr runoff 33087 ft3
Minimum volume required 33087 ft'
Volume provided 36,958 ft~
Peak Flow Calculations
Is prefpost control of the 1-yr 24-hr peak flow required? Y {Y or N)
1-yr, 24-hr rainfall depth 1.0 in
Rational C, pre-development 0.4 {unilless}
Rational C, post-development 0.9 {unilless}
Rainfall intensity: 1-yr, 24-hr storm 5.2 inlhr
Pre-development 1-yr, 24-hr peak flow 20.3 ft'Isec
Post-development 1-yr, 24-hr peak flow 45.8 ft'/sec
PrelPost 1-yr, 24-hr peak flow control 25.5 ft'Isec
Basin Elevations
Basin bottom elevation 305.00 ft
Sediment cleanoul elevation 306.00 ft
Permanent pool elevation 308.50 fl
Temporary pool elevation 312.00 ft
Volume and Surface Area Calculations
SAlDA ratio 2.03 (unitless)
Permanent pool, surface area required 10,224 fig
Permanent pool, surface area provided 12,200 ft2 OK
Permanent pool volume 36,957 ft'
Average depth for SAlDA tables 3.029262295 ft OK
Forebay volume 7,400 {(~
Forebay % of permanent pool volume 20 % 01(
Temporary pool, surface area provided 14,730 ft~
Form SW401-Wet detention Basin-Rev.2 Parts BMP CA, Page 5 of 11

Permit
(to be provided by DWQJ
II''! D.ESIGN~INFORMATION,!!~' ~ r, l~iifi.,; , ,;:
~rawdown Calculations
Treatment volume drawdown time 5 days Olt
Treatment volume discharge rate 0.09 [t'!s
Pre-development 1-yr, 24-hr discharge 5.00 flats OK
Post-development 1-yr, 24-hr discharge 0,09 flats ~K
Additional I nformatlon
Diameter of orifice 2.00 in
Qesign TS5 removal 85
Basin side slopes 3 :1
Vegetated shelf slope 10 :1
Vegetated shelf width 10 ft
Length of tlowpalh to width ratio 3 ~~
Length to width ratio 2 :1
Trash rack for ovedlow & orifice? Y {Y or N}
Freeboard provided 1 ft
Vegetated filter provided? Y (Y or N}
Recorded drainage easement provided? Y (Y or N}
Capures all runoff at ultimate build-out? Y (Y or N}
Drain mechanism for maintenance or emergencies 4" Gate Valve
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
l]K
Farm SW401-Wet petentfon Basin-Rev,2 Parts BMP CA, Page 8 of 11

Permit No.
(lo be provided by pWq}
OF: W /~ 7~`c-~
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NCDENR ,~~~°,~!°;~.r~.
57ORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
WET DETENTION BASlN SUPPLEMENT
This form must be filled out, printed and submitted.
The Required items Checklist (Part !i!) must ba printed, C!!ed out and submited along with all of the required information.
,P.ROJECT:iINFORMATIQN'ai~ !,::;~, ;) ~ ~;(! ~ ~ ~ ;; i i 11, l ~ "'~;.
Project name Lake Glad Road Commercial
Conlacl person Ciif Credle
Phone number 919-682-2006
Dale
Drainage area number
11!812007
BMP CB
II:'iDESIGN;INFORMATIt)N ~ ,;'' !!;,;; ~! ~~ ,` ` ~ ;~ ~~''; '~~ -~~ii:;
Site Characteristics
Drainage area 461,736 flZ
Impervious area 452,502 fig
impervious 96.00015593
Design rainfall depth 1.0 in -
Storage Volume: Nan-SR Waters
Minimum volume required ff'
Volume provided ff'
Storage Volume: SR Waters
1-yr, 24-hr runoff depth 1 m
Pre-development 1-yr, 24-hr runoff ft'
Post-development 1-yr, 24-hr runoff 35997 K'
Minimum volume required 35997 fl'
Volume provided 36,956 ft'
Peak Flaw Calculations
Is prelpost control of the 1-yr 24-hr peak flow required? Y (Y or N}
1-yr, 24-hr rainfall depth 1.0 in
Rational C, pre-development 0.4 {unitiess}
Rational C, past-development 0.9 {uniiless}
Rainfall intensity:l-yr, 24-hr storm 5.4 infllr
Pre-development 1-yr, 24-hr peak flow 19.3 ft'fsec
Past-development 1-yr, 24-hr peak slow 49.6 ft'lsee
PrelPost 1-yr, 24-hr peak flow control 30.3 ft'Isec
Basin Elevations
Basin bottom elevation 298.00 fi
Sediment cleanaut elevation 299.00 fi
Permanent pool elevation 301,50 fl
Temporary pool elevation 304,50 ft
Volume and Surface Area Calculations
SPJOA ratio 2.40 {unitless~
Permanent pool, surface area required 11,123 fiZ
Permanent pool, surface area provided 12,100 flZ t)K
Permanent pool volume 36,958 ft'
Average depth for SAlOA tables 3.054380165 ft O1C
Forebay volume 7,400 fi'
Forebay % of permanent pool volume 20 % 01<
Temporary pool, surface area provided 14,730 ftZ
Form SW401-Wet Detention Basin-Rev.2 Paris BMP CB, Page 7 of 11

Permit
(ta be provided by DWQ)
IL!:DESIGN,INEORMATION~, !,;,' " ,, .,,,.~ ; ., ,;,
Drawdown Calculations
Treatment volume drawdown time
Treatment volume discharge rate
Pre-development 1-yr, 24-hr discharge
Post-development 1-yr, 24-hr discharge
Additional Information
Diameter of orifice
Design TSS removal
Basin side slopes
Vegetated shelf slope
Vegetated shelf width
Length of flowpath to width ratio
Length to width ratio
Trash rack for overflow & orifice?
Freeboard provided
Vegetated filler provided?
Recorded drainage easement provided?
Capures alt runoff at ultimate build-out?
Drain mechanism for maintenance or emergencies
5 days
0,1o ft'!s
5.00 ftsls
0.10 ft'!s
2.00 in
85
3 :1
10 :1
1a ft
3 :1
2 :1
Y (Y ar N)
1 K
Y (Y or N)
Y (Y or N)
Y (Y or N)
4" Gate Valve
aK
OK
oic
01(
01(
OK
0K
QK
OK
OK
OK
dK
01<
OK
Farm SW401-Wet Detenilan Basln-Rev,2 Parts BMP CB. Page B of 1 i

Permit No.
{!o be pravfded by DWq/

,/•~ ~~ f Sri n rFRO
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NCDENR ',;~~,,,,,,I,a,~,~,,,~~ -~
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STORMWATER MANAGEMENT PERMIT APPLICATION FORM
40i CERTIFICATION APPLICATION FORM
WET DETENTION BASIN SUPPLEMENT
This form must 6e tilted ouf, printed and submitted.
The Requrredltems Checklist (Part lit) must be prrnted, Titled out and submitted along with all of the required information.
I:'PRQJECT'INFORMATIONi;,,'' ~~lili!~
_ ..
Project name
Lake Glad Road Commercial
Contact person CifE Cretlle
Phone number 919.682-2+106
Date 11!812007
Drainage area number BMP CC
Ilr,iDESIGN,INFORMATION ~,.~ ~ „~ ,riijll;~~,u:~ ~ ~~ !'.' , i;`, .i.f! , ,
51te Characterlstlcs
Drainage area 340,639 ft~
Impervious area 333,822 ftZ
impervious 97.99876115
Design rainfall depth 1.0 in
Storage Volume: Non-SR Waters
Minimum volume required ft'
Volume provided ft'
Storage Volume; 5R Waters
1-yr, 24-hr runoff depth 1 in
Pre-development 1-yr, Z4-hr runoff fl'
Past-development 1-yr, 24-hr runoff 26456 ft'
Minimum volume required 26456 na
Volume provided 27 320 ft'
Peak Flow Calculations
Is prelpost control of the 1-yr 24-hr peak Clow required? Y (Y ar N}
1-yr, 24-hr rainfall depth 1.0 in
Rational C, pre-development 0.4 {unitless}
Rational C, post-development 0.9 {unitless}
Rainfall iniensity:1-yr, 24-hr storm 5.2 inlhr
Pre-development 1-yr, 24-hr peak slow 14.2 ft'isec
Past-development 1-yr, 24-hr peak flow 36.5 ft3lsec
PrelPost 1-yr, 24-hr peak flow control 22.3 ft~lsec
Basin Elevations
Basin bottom elevation 301.00 ft
Sediment cleanout elevation 302.00 ft
Permanent pool elevation 304.50 ft
Temporary pool elevation 307.50 f1
Volume and Surface Area Calculations
SAIDA ratio 2.40 (unitless}
Permanent pool, surface area required 8,175 ftz
Permanent pool, surface area provided 9,005 ft~ OK
Permanent pool volume 27,320 R'
Average depth for 5A1DA tables 3.033870072 ft OK
Forebay volume 5,500 ft'
Forebay % of permanent pool volumes 20 % OK
Temporary pool, surface area provided 12,515 ftZ
Form SW401-Wet Detention Hasin-Rev.2 Paris BMP CC, Page 9 or 11

Permit No.
{lobe provided by OWgJ
II~iDESiGN-INFORMATIQN ', ~,, r; ~ ; „ ~~~, ~ ; , ~~ ~,i,, .
Drawdown Calculations
Treatment volume drawdown time 3 days Ot(
Treatment volume discharge rate 0.10 ft'Is
Pre-development 1-yr, 24-hr discharge 5.00 ft'ts OK
Post-development i-yr, 24-hr discharge 0.10 ft'!s 01<
Add itlonal Information
Diameter of orifice 2.00 in
Design TSS removal 85 °/°
Basin side slopes 3 :1 DK
Vegetated shelF slope 10 :1 OK
Vegetated shelf width 10 fi OK
Length of (towpath to width ratio 3 :1 OK
Length to width ratio ~ 2 :1 OK
Trash rack for overflow & orifice? Y (Y or N) OK
Freeboard provided 1 ft OK
Vegetated filter provided? Y (Y or N) DK
Recorded drainage easement provided? Y (Y or N) OK
Capures all runoff at ultimate build-out? Y (Y or N) OK
Drain mechanism for maintenance or emergencies 4" Gate Valve
OK
Farm SW4l}i-Wet detention Basin-Rev.2 Paris 8MP CC, Page 10 of 11

NCDENR
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
4~1 CERTIFICATION APPLICATION FORM
~~~,.:::::.qw
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LEVEL SPREADER, FILTER STRIP AND RESl'ORED RIPARIAN BUFFER SUPPLEMENT
This fomr must be fitted out, printed and submitted.
Ih ( 111l~ I ~••• 1111 I"'! r WIMN I Stn IIIII 1'1'?trfp° P:II"'~ ^^III~' ^ • Il , 111 II Ill~l toll 1U fll ` 'filil (lf{I ^I8 71f Rl~jillUl'1 °elll IIII 11111111,1 it " IlfB~'E~r ~.(te lit "1~1 inl j„Ilr•nl°n i P ~n tl " i i Iir i ~ S I ~ iilt•II~,,
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;' : ROJEGT INFORMATIONi`,,'•;I I I ~ I:I:~,~,,~,.i , ... ~ ~~ w ,ml~ ui„ ; t ~,~:::,
Project name Lake Glad Road Commercial
Contact name Cliff Credle
Phone number
Date
Drainage area number
919-682-2006
November 6, 2007
BMP A
1f..~)SESIGNINFQRMATION,~. ',;';,' , '' '
For Level Spreaders Recetving Ftow From a BMP
Type of BMP Wet Pond
Drawdown flow from the BMP 1.8 cfs
For Level Spreaders Recetving Flow from the Drainage Area
Drainage area
Impervious surface area
Percent impervious
Rational C coefficient
Peak flow from the 1 in/hr storm
Time of concentration
Rainfall intensity,lD-yr storm
Peak slow from the 10-yr storm
Where Does the Level Spreader t7lscharge 7
To a bioretention cell?
To a wetland?
To a filter strip or riparian buffer?
Other (specify)
Do not complete Ibis section of the worksheet.
flz Do not complete this section of the worksheet.
fly Da not complete this section of the worksheet.
Do not complete this section of the worksheet.
Do not complete this section of the worksheet.
cfs Do oat complete This section of the worksheet.
min
Inlhr Da not complete this section o{the worksheet.
cfs Do not complete this section of the worksheet.
(Y or N}
(Y or N) Do not need to complete filler strip characterization below.
(Y or N}
Filter Strip or Riparian Buffer Characterf=atlon {If applicable)
Width of grass ft
Width of dense ground cover fi
Width of wooded vegetation ft
Total width ft
Slope (from level lip to to top of bank)
Are any draws present? (Y or N)
Level Spreader Design
Forebay surface area 10 sq ft OK
Feet of level lip needed per cfs ftlcis
Answer "Y" to one of the fallowing:
Length based on the 1 inlhr storm? N (Y or N)
Length based on the i0-yr, 24-hr storm? N (Y or N}
Length based on the BMP discharge rate? Y (Y or N)
Design flow 1.8 cfs
Is a bypass device provided? (Y or N)
#VALUEI
Form SW407-Leval Spreader, Filter Strip, Restored Rlparlan BuKer-Rev.2 pans I. and Il. Design Summary, page i of 10

Length of the level lip 3t] ft
Are level spreaders in series? N {Y or N}
Bypass Channel gesfgn (it applicable)
Does the bypass discharge through a weiland7 (Y or N)
Does the channel enter the stream at an angle?
Dimensions of the channel {see diagram below):
M ft
13 ft
w n
Y fi
Peak velocity in fhe channel during the 10-yr, 24-hr storm cfs
Channel lining material
Y
M
8
M
VALUE!
Fonn SW401-Level Spreader, FllterSlrip, Restored Riparian Buffer-Rev.2 Parts (. and II. Design Summary, page 2 of 1D

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NCDENR
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
LEVEL SPREADER, FILTER STRIP AND RESTORED RIPARIAN BUFFER SUPPLEMENT
This form must be titled out, printed and submitted,
r i r , it t I , ,•, fl01 I'"nIr r r :rrn I (Uitnnq ",~ tdnnr t^;, r •^9nn• •• ~• ,~ In I Ill rl Inrlllllll nr q10 I' trrn inn,''1nnln! n t rt Ii:'~ OIII Iln rlilnril 7iI'"r tttl {~I!Ir I,!nttlnrrnnRt~t niijt~,nr~•.r(Innnntlunrit ~ I I I I~I~
~illillllll~l(Illll~lll(IVIII;I1111IIIIrne,,If~e~Urt~~([~Qms~i~?~h~~kifs`~~~,I~t>!I~11~! h?Usti;Geip~ln~.e..~J~l(~l)edjoyr,and,,~5~1.6rh!t~edl,~lb~-sil~rt~~ r3i1.1,0.~.^l.@.,,~~(rI~,~9:U.i,7.1~1! t(fr1~/.,,Qf f,.l,(I.NI~Illll(llllifll111atIIlI,II,~I,i,l

I:'PROJECTINFORMA71ON , .. ...
~~ '~ "'' ~'
Project name Lake Glad Road Commercial
Contact name Cliff Credle
Phone number 919-fi02-20Dfi
Dale November 8, 2007
Drainage area number BMP B
It DESIGNlINFORMATION' ',` ,, ,,.,u,i;~ :: ~, „,
For Level Spreaders Receiving Flow From a BMP
Type of BMP Wet Pond
Drawdown flow from the BMP i.7 cfs
Far Level Spreaders Receiving Flow from the Drainage Area Do not oomplete this section of the worksheet.
Drainage area flZ Do not complete this section of the worksheet.
Impervious surface area ft~ Da not complete this section of the worksheet.
Percent impervious _ _ _ Do not complete this section of the worksheet.
Rational C coefficient Do not complete this section of the worksheet.
Peak flow from the 1 inlhr storm cis Do not comptele This section of the worksheet.
Time of concentration min
Rainfall intensity, l0-yr storm inlhr Do not comptele Ihis section of the worksheet.
Peak flow from the 10-yr storm cis Do not complete Ihis section of the worksheet.
Where Raes the Level Spreader Discharge?
To a biorelention cell? N (Y or N)
To a wetland? Y {Y or N) Do not need to comptele filter strip characterization below.
To a tiller strip or riparian buffer? N (Y or N)
Other (specify)
Filter Strip or Riparian buffer Characterization (if applicable}
Width of grass ff
Width of dense ground cover ff
Width of wooded vegetation ff
Total width ff
Slope (from level lip to to top of bank}
Are any draws present? (Y or N}
Level Spreader Design
Forebay surface area 10 sq ft 01(
Feet of level lip needed per cfs fUcfs
Answer "Y" to ane of the following;
Length based on the 1 inlhr storm? N (Y or N)
Length based on the 10-yr, 24-hr storm? N {Y or N)
Length based on the BMP discharge rate? Y (Y or N)
Design flow i.7 cfs #VALUE!
Is a bypass device provided? (Y or N)
Form SW407-Level Spreader, Filter Strip, Restored Riparian Butler-Rev.2 Parts I, and II. Design Summary, page 3 of 10

Length aE the level lip 25 ft
Are level spreaders in series? N {Y or N)
Bypass Channet Design (If applicable)
Does the bypass discharge through a wetland? {Y or N}
Does the channel enter the scream at an angle?
Dimensions of the channel {see diagram below):
M ft
g fi
W ft
y ft
Peak velocity in the channel during the 10-yr, Z4-hr storm c(s
Channel lining material
M
M
#VALUE!
Form SW401-Level Spreader, Plater Strip, Restated Riparian Bufrer-Rev.2 Paris I. and n. design Summary, page 4 of 10

1
.~.r-
NCDEhIR
Do not complete this section of the worksheet.
ftz Do not complete this section of the worksheet.
ftZ Do not complete this section of the worksheet.
Do not complete this section of the worksheet.
Do not complete this section of the worksheet.
cfs Do not complete this section of the worksheet.
min
inlhr Do not complete this section of the worksheet.
cfs Do not complete this section of the worksheet.
LEVEL SPREADER, FILTER STRIP AND RESTORED RIPARIAN BUFFER SUPPLEMENT
This form must be filled out, printed and submitted.
1.• pROJECT~iINFORM471ON ,,..,
Aroject name Lake Glad Road Commercial
Contact name Cliff Credle
Phone number 919-682-2006
Date November 8, 2007
Drainage area number BMP CA
ILDESIGN;INFOF~MATION;,~~>I`' •;~ 1,~~,, ~_~ ~~!~';, '~~ ~ ';?il
For Level Spreaders Receiving Flow From a BMp
Type of 8MP Wet Pond '
Drawdown Clow firom the BMP 2,44 _cfs
For Level Spreaders Receiving Flow from the Drainage Area
Drainage area
Impervious surface area
Percent impervious
Rational C coefficient
Peak flaw from the 1 inlhr storm
Time of concentration
Rainfall intensity, 10-yrsiorm
Peak Flow from the 10-yr storm
Where Roes the Level Spreader f)fscharge 7
To a bioretention cell?
To a wetland?
To a tiller strip or riparian butter?
Other {specify)
Filter Strip or Riparian Buffer Characterization {If applicable}
Width of grass
Width of dense ground cover
Width of wooded vegetation
Total width
Slope {from level lip to to top of bank)
Are any draws present?
Level Spreader Design
Forebay surface area
Feet of level lip needed per cfs
Answer "Y" to one of the following:
Length based on the 1 inlhr storm?
Length based on the 10-yr, 24-hr storm?
Length based on the BMP discharge rate?
Design Flow
Is a bypass device provided?
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
O'rr'~~H~' I tg/-~ G
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O lid ~n~ uv?h,n,• .
II'~nnn:n-
N (Y or N)
Y (Y or N} Do not need to complete filter strip characterization below.
{Y or N}
fi
b
ft
ft
{Y or N) OI<
10 sq fi Olt
fUcfs
N (Y or N}
N {Y ar N)
Y (Y or N)
2.4 cfs
(Y or N)
#VALUE!
Fonn SW401-Level Spreader, Filler Strip, Restored Riparian buffer-Reu.2 Parts t. and II. ~eslgn Summary, pogo 5 of 10

Length of the level lip 35 ft
Are level spreaders in series? N (Y ar N)
Bypass Channel Design (If applicable)
Does the bypass discharge through a wetland? (Y or N)
Does the channel enter the stream al an angle?
Dimensions of the channel (see diagram below);
M fl
W it
y ft
Peak velocity in the channel during the 10-yr, 24-hr storm cis
Channel lining material
Ivf
M
;tVAI.UE!
Form SW401-Level Spreader, Filler Strip, Restored Riparian Bufrer-Rev.2 Parts 1, and ii. design Summary, page t3 or 10

_~'
NCDENR
f,;;~.,;;:ID ~IllJQ
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
901 CERTIFICATIDN APPLICATION FORM
LEVEL SPREADER, FILTER STRIP AND RESTORED RIPARIAN BUFFER SUPPLEMENT
This form must be filled out, printed and submitted:
C: P.ROJEGT INFORMATION ,: ''
Project name Lake Glad Raad Commercial
Contact name Ctitf Credle
Phnna numher 919-682-2006
Date
Drainage area number
November B, 2007
6MP CB
I I ,I.
Il';D.ESIGNiINFORMAtfION ~ ~ ~ ' ~ ~ ,
For level Spreaders Receivtng Flow From a BMP
Type at BMP Wet Pond
Drawdown flow from the BMP 3,9 cfs
For Level Spreaders Receiving Flow from the prainage Area
Drainage area
Impervious surface area
Percent impervious
Rational C coefficient
Peak slow from the 1 inlhr storm
Time of concentration
Rainfall inlensity,l0-yr storm
Peak (low from the 10-yr storm
Where Does the Level Spreader Discharge ?
To a bioretentian cell?
To a wetland?
To a filter strip or riparian buffer?
Other (specify}
Filter Strip or Riparian Buffer Characterization (if applicable)
Width of grass
Width of dense ground cover
Width of wooded vegetation
Total width
Slope {from level lip to to top of bank}
Are any draws present?
Level Spreader pesign
Forebay surface area
Feet of level lip needed per cfs
Answer "Y" to one of the following:
Length based on the 1 inlhr storm?
Length based on the 10-yr, 24-hr storm?
Length based on the BMP discharge rate?
Design slow
is a bypass device provided?
Do not complete This section of the worksheet.
ftz Do not complete this section of the worksheet.
gz Do not complete this section of the worksheet.
Do not complete this section of the worksheet.
po not complete this section of the worksheet.
cfs Da not complete This section of the worksheet.
min
inlhr Da not complete this section of the worksheet.
cfs Do not complete this section of the worksheet,
N (Y or N)
Y (Y or N) Do not need to complete Pilfer strip characlerizafion below.
N (Y or N)
fl
ft
fi
ft
(Y or N}
10 sq fl
flJcfs
N (Y or N)
N (Y or N)
Y (Y or N)
3.9 cfs
{Y or N}
OI<
VALUE!
Form SW401-Level Spreader, Fllfer Strip, Restored Riparian Bufrer-Rev.2 Parts t. and If. besign Summary, page 7 of 10

Length of the level lip 55 ft ##VALUE!
Are level spreaders in series? N (Y or N)
Bypass Channel Design (If applicable)
Does the bypass discharge through a wetland?
Does the channel enter the stream at an angle?
Dimensions of the channel (see diagram below):
M
B
W
Y
Peak velocity in the channel during the 10-yr, 2Q-hr storm
Channel lining material
Nf
(Y or N)
ft
ft
ft
cis
M
Form 5W4o1-Level Spreader, Filler Strip, Restored Riparian Buffer-Rev.2 Parts I. and II. Design Summary, page a of iQ

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NCDENR
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
LEVEL SPREADER, FILT BR STRIP AND RESTORED RIPARIAN BUFFER SUPPLEMENT
This form must be frlJed out, printed and submJffed.
I I , „^~aui ~ •'ttni r n n! „ n mm~lp.^ nnm. nr'r , ~^°rc ~•~ ~ ^m t nr r mr Im~s~nr mr r°• m•~m r. Itrnnm~lw r vn n ~ rtn n^t uni me ~~~ nr• pn•~~~~nullrn im Crm i um^nuam ~ rn i ~ ~ i i s ~ ~ III Ili Illy ;rat
ill-If~[tl~f(i61~Llillllllllllllllf Th~lt>Qd~~G~d,,lrl~I~tsul.hec~st!(pa~11.1.~Im,~1s~Ih:~Iur~n~~d,~~~71~~,,oUtiandslab-~~k>~d~~[dn~~wl~lt{.~(.1,r~~,thel~~ilf~~111rafp~f-~~t~N~~l~lll~~~i~fl!~I~I~~~~l,~rll,~~!~llli~~
! ~PROJBCTINFORMATION „, " ' .' '"'
Project name Lake Giad Road Commercial
Contact name CIiK Cradle
Phone number 919-G82-2006
Dale November 8, 2007
Drainage area number BMP CC
II !D.E5IGNIINFORMATION I'~',;'
,;; ;:~
For Level Spreaders Receiving Flow From a BMP
Type of BMP Wet Pontl
Drawdown flow from the BMP D.7 cfs
For Level Spreaders Receiving Flow from the Drainage Area Do not complete this section of lire worksheet.
Drainage area ftZ Do not complete This section of the worksheet.
Impervious surface area ftz Do not complete this section of the worksheet.
Percent impervious Do not complete this section of the worksheet.
Rational C coeNicient Do not complete this section of the worksheet.
Peak flow from the 1 inlhr sforrn cfs Do not complete this section of the worksheet.
Time of concentration min
Rainfall intensity, 10-yr storm inlhr Do not complete Ibis section of the worksheet.
Peak flow from the 10-yr storm cfs Do not complete This section of the worksheet.
Where Does the Level Spreader Dfschar~e?
Ta a bioretention cell? N {Y or N)
To a wetland? Y {Y or N} Do not need to complete filter scrip characterization below.
To a lifter strip ar riparian buffer? N (Y or N}
Other {specify)
F{Iter Strip or Riparian Buffer Characterization (if appNcable)
Width of grass ft
Width of dense ground cover ft
Width of wooded vegetation ft
Total width ft
Slope (from level lip io to top of hank)
Are any draws present? N (Y or N} OK
Level Spreader Design
Forebay surface area 10 sq ft OK
Feet of level lip needed per cfs ftlcfs
Answer'Y" to one of the following:
Length based on the 1 inlhr storm? N (Y or N)
Length based on the 10-yr, 24-hr storm? N {Y or N)
Length based on the BMP discharge rate? Y {Y or N)
Design flow i3.7 cfs i VALUE!
Is a bypass device provided? (Y or N}
Form SW4o1-Level Spreader, Fliter Strip, Restored Rlparfan 9ufrer-Rev.2 Parts 1. and It. Oeslgn Summary, page 9 of 10

Length of the level lip
Are level spreaders in series?
bypass Channel Design {If applicable)
Does the bypass discharge through a wetland?
Does the channel enter the stream at an angle?
Dimensions of the channel (see diagram below):
M
B
W
Y
Peak velocity in the channel during the 10-yr, 24-fir storm
Channel lining material
M
115 fi
N (Y or N)
(Y ^r N)
ft
ft
fi
fi
cis
Y ----------
iv[
~~I
~ 1
#VAWEI
Form SW401-Level spreader, Filler Strip, Restored Riparian Buffer-Rev,2 Parts !. and II. Design Summary, page in al 1n

01114/2008 11:06
9195283052
CITY OF CREEDMOOR
City of Creedmoor
COMMISSIONERS
TIMOTHY J• KARAN
ANGELA M. MANtdUM
OTHq pIpER, JR.
5. KENT RAV
WILLIAM L. ROBINSON
P.O. Box 765
~reedmoor, N.C. 27522
(919) 52$-3332
Mr. William. C. Credle
Credle Engineering Company, Inc.
204 E. Markaxn A,ve.
Durham, NC 27701
January 14, 2008
RE: Lake Glade Road- Stormwater Mst~.agement Plan.
Dear Mr. Credle:
THOMAS L. OURRIN
CITY ATTORN~5/
Ozx December 19, 200'7, the City of Creeduxaor approved your starmwater management
.plan £or the . proposed Lake Glade Road _praject. The City based xts approval an plans
dated dctober 2007, December i 2, 2007 and December 14, 2007. The plays were
submitted to the City's engineering consultants, 'fbe Wooten Company.
1'he plans and materials submitted were reviewed by Crystal Penton, E. Z. of tlxe Wooten
Company far compliance with the City's Starrnwater Management Ordinance and
Stormwater ma~gement Design .Manual. More specifically, the material was reviewed
for the following: 1 ~ post-development runoff rate does not exceed the pre-develapataent
runoff rate for the lwyear, 24-hour storm; 2) the pipe crossings were designed fro a
callectar roadway which calls far culverts to cagy the 25-year design storm without
overtopping the road and to pass the 100-year design storm without damaging the road,
and; ~) the project meets the intent of the nitrogen nutrient redu,ctians set forth by the
City. It should be elated that this review does not address the effect of the project on
upstream and/or downstream property.
Should you have aqy questions, please call me at 919528-3332.
David Roesler
Plantxiug Director
PAGE 02
QARRYL d. MQB$
MAYOR
ROBERT A. BCHAUMLEFFEL, JR.
CITY MANAtiER