SW8000727_HISTORICAL FILE_20130531

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SW�7a�
DOC TYPE
❑CURRENT PERMIT
❑ APPROVED PLANS
/HISTORICAL FILE
lEl COMPLIANCE EVALUATION INSPECTION
DOC DATE-
z
YYYYMMDD

'iA�e\cj
7'3 a Z-
STATE OF NORTH CAROLINA
Department of Environmental and Natural Resources
127 Cardinal Drive Extension
Wilmington, North Carolina 28405
[phone]
FILE ACCESS RECORD 1 e SECTION ( LJ �'!! V f nLJA4 ,
TrATYD A TE ,1��' t C� � I A et
NAME ] Lit i �P+' 00Z Z
REPRESENTING
Guidelines for Access: The staff of Wilmington Regional Office is dedicated to making public records in
our rustody readily available to the public for review and copying. We also have the responsibility to the
Public to safeguard these records and to carry out our day-to-day program obligations. Please read
carefully the following guidelines signing the form:
1. Due to the large public demand for file access, we request that you call at Ieast a day In
advance to schedule an appointment to review the files. Appointments will be scheduled
between 9:00am and 3:00pm. Viewing time ends at 4;45pm. Anyone arriving without an
appointment may view the tiles to the extent that time and staff supervision is available.
2. You must specify files you want to review by facility name. The number of files that you
may review at one time will be limited to five.
3. You may make copies of a file when the copier is not mi use by the staff and if time permits.
Cost per copy is 2.3 cents for ALL copies if you snake more than 25 copies. There is no
charge for 25 or less copies. Payment may be.made by -check, money order, or- cash at the
reception desk. Copies can also be invoiced for your convenience.
4. FE,ES MUST BE KEPT IN ORDER YOU FOUND THEM. Files may not be taken from
the office. To remove, alter, deface, mutilate, or destroymaterial in one of these files is a
misdemeanor for which you can be fined up to $500.00. Na briefcases large totes etc. are
permitted in the file review area,
5. In accordance with General Statue 25-3--512, a S25.00 processing fee will be charged and
collected for checks on wluch payment has been refused.
FACILITY NAME COUNTY
rM 11 "--. 5 - - I - � -
Signa d Name of irm/ siness
Fleas c a business card tdAixfionn
COPIES MADE PAID
i i I� /:ooll
Date Time In Time Out
INVOJCE

STATE OF NORTH CAROLINA
Department of Environment and Natural Resources
WIRO Regional Office
FILE ACCESS RECORD
SECTION SWP DATE/TIME
NAME r/ / lJ% ��i e--- REPRESENTING
Guidelines for Access: The staff of the Regional Office is dedicated to making public records in our
custody readily available to the public for review and copying. We also have the responsibility to the public
to safeguard these records and to carry out our day-to-day program obligations. Please read carefully the
following before signing the form.
1. Due to the large public demand for file access, we request that you call at least a day in
advance to schedule an appointment for file review so you can be accommodated.
Appointments are scheduled between 9:00 a.m. and 3:00 p.m. Viewing time ends at 4:45
p.m. Anyone arriving without an appointment may view the files to the extent that time and
staff supervision are available.
2. You must specify files you want to review by facility name or incident number, as
appropriate. The number of files that you may review at one appointment will be limited to
five.
3. You may make copies of a file when the copier is not in use by the staff and if time permits.
There is no charge for 25 or less copies.; cost per copy after the initial 25 is 2.5 per copy.
Payment is to be made by check, money order, or cash in the administrative offices.
4. Files must be kept in the order you received them. Files may not be taken from the office.
No briefcases. IarAe totes, etc. are permitted in the file review area. To remove, alter,
deface, mutilate, or destroy material in public files is a misdemeanor for which you can be
fined up to $500,00.
5. In accordance with GS 25-3-512, a $25.00 processing fee will be charged and collected for
checks on which payment has been refused.
6. The customer must present a photo ID, sign -in, and recei ' or er prior to
reviewing files.
FACILITY NAME COUN Y
2.
3.
4.
5.4
Signature/Name of Firm or Business Date Time Time Out
(Please attach business card to form if availab
# Copes: Amt. Pd:

A�lA
Aff
NCDENR
North Carolina Department of Environment and Natural Resources
Beverly Eaves Perdue
Governor
December 3, 2009
Mr. David Byrd, Owner
Automotive Services
2403 Castle Hayne Road
Wilmington, NC 28401
Division of Water Quality
Coleen H. Sullins
Director
Subject: Session Law 2009-406 — Permit Extension
Stormwater Permit #SW8 000727
High Density — Automotive Services
New Hanover County
Dear Mr. Byrd:
Dee Freeman
Secretary
On August 5, 200�t, the Governor signed Session Law 2009-406. This law impacts any
development approval issued by the Division of Water Quality under Article 21 of
Chapter 143 of the General Statutes, which is current and valid at any point between
January 1, 2008, and December 31, 2010. The law extends the effective period of any
stormwater permit that is set to expire during this time frame to 3 years from its current
expiration date.
1 ' J
Accordingly, Stormwater Permit # SW8 000727, which was set to expire on
December 21, 2010, is now in effect until December 21, 2013. Please resubmit the
renewal application and fee at least 180 days prior to December 21, 2013, which would
be June 21, 2013. A copy of the Renewal'Application can be obtained from the
following website: http://h2o.enr.state.nc.us/su/bmp forms.htm.
If you have any questions, please contact the Division of Water Quality in the
Wilmington Regional Office at 910-796-7215.
Sincerely,
Georgette Scott
Stormwater Supervisor
Division of Water Quality
S:IWQSISTORMWATERIRENEWAL1Sk-2009=4061000727.dec09
CC' Wilmington Regional Office
Central Files
Wilmington Regional Office
127 Cardinal Drive Extension, Wilmington, North Carolina 28405 Ope
Phone: 910-7%-72151 FAX: [phone] Customer Service: 1-877-623-6748 North Carol i n a
Internet: www,ncwaterqualify org Aaturallry
An Equal Opportunity 4 Affirmative Adion Employer

TRIPP ENGINEERING, P.C.
419 Chestnut Street
Wilmington, North Carolina 28401
Phone: [phone] . FAX: [phone]
September 22, 2000
NCDENR
Division of Environmental Management
Water Quality Section
127 Cardinal Drive
Wilmington, NC 28405-3845
Attn: Mr. Scott Vinson
Re: Automotive Services
SW8 000727
New Hanover County, NC
TE 00057
Dear Scott:
SEP Z-:4�46UQ
In response to your comments dated September 15, 2000, we offer the following:
1. A note for roof drainage is provided.
2. A note that "no wetlands exist" is provided.
3. The permanent pool is dimensioned.
4. Baffles have been provided to achieve the 3:1 length.
Please review for approval and contact us with any questions or comments.
Thank you.
Sincerely,
Tripp Engineering, P.C.
av/,c cc��
Charles D. Cazier, E.I.
CDC: dcb
Enc.

State Stormwater Management Systems
Permit No. S W8 000727
STATE OF NOWIF1-1 CAIZOLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
STATE STORM WATER MANAGEM11'AT PERMIT
HIGH DENSITY DEVELOPMENT
In accordance with the provisions of'Artielc 2l of Chapter 143, General Statutes ofNortll Carolina as anlcncicd, and
other applicable Haws, Rules, and Regulations
PERMISSION IS I-IEREBY GIZANT1 D TO
David Byrd, Owner
AulomChive Se) -vices
New Hanoi,er Counly
FOR THIS
construction, operation and maintenance of'a wet detention pond in compliance with the provisions of 15A NCAC
21-1 .1000 (hereafter referred to as the ",vloi-nni,aler rules") and the approved stormwater management plans and
specs rcatiOtis and other supporting data as attached and oil file with and approved by the Division of Water Quad ity
and considered a part of this permit.
This permit shall be effective from the date of issuance until December 21, 2010 and shall be subject to the
following specified conditions tend limitations:
I. DESIGN STANDARDS
This permit is effective only with respect to the nature and volume of stormwater described in the
application and other supporting data.
2. This stormwater system has been approved for the 111anagenient of stormwater runoff as described on page
3 ofthis permit, the Project Data Sheet. The stormwater control has been designed to handle the runoff iron
56,976 square feet of impervious area.
3. Approved plans and specifications for this project are incorporated by reference and are enforceable parts
of the permit.
4. The tract will be limited to the amount ol` built -Upon area indicated on page 3 of this permit, and per
approved plans.
5. The built -upon area for the fUture development is limited to n/a.
6. The runoff from all onsite and offsite built -upon area permitted with this project must be directed into the
permitted stormwater control system.
2

State Stormwater Managemcnt Systems
Permit No. SW8 000727
Project Name:
Permit Number:
Location:
Applicant:
Mailing Address:
DIVISION OF WATER QUALITY
PROJECT DESIGN DATA SHEET
Automotive Services
Application Date:
Name of Receiving Stream/Index 4:
Classification of Water Body:
f Class SA, chloride sampling results:
Pond Depth, feet:
Permanent Pool Elevation, FMSL,:
Drainage Area, acres:
"total Impervious Surfaces, ft2:
Buildings, ft2:
Parking, fie:
Sidewalks, ft2:
Oflsite Area entering fond, ft2:
Required Surface Area, ft2:
Provided Surface Area, ft2:
Required Storage Volume, ft;:
Provided Storage Volume, W:
"Temporary Storage llevation, FMSU
Controlling Orifice:
S W 8 000727
New Hanover County
Mr. David Byrd, Owner
David Byrd, Owner
2403 Castle Mayne Road
Wilmington, NC 29401
November 20, 2000
N1 Cape Fear River / 18-74-61
"C S W"
n/a
6.50
25.00
1.61
56,976
16,963
37,801
2,212
none, per I'ngineer
2,858
2.986
4,565
5,189
26.50
1.00"� pipe
I

State Stormwater Management Systems
Permit No. SW8 000727
11. SCHEDULE OF COMPLIANCE
1'}1c stormwater management system shall be constructed in it's entirety, vegetated and operational for its
Intended LISe pr101' to the COnStI'UCt1011 ofany built-UPOiI SLII'faCC.
2. DUI'illg COi1StrLICtiOn, CrOSIO11 Shall be kept to a mini1 ium and any eroded areas of the system will be repaired
immediately.
The pernlittee shall at all tildes provide the operation and maintenance necessary to assure the permitted
storillwater system functions at optimum efficiency. The approved Operation and Maintenance Plan must
be followed in its entirety and maintellalICC IhhLISt OCCUr at the scheduled intervals including. but not limited
to:
a. SCIlliall[hLlal scheduled inspections (every 6 months).
b. Sediment removal.
C. Mowing and revegetation of side slopes.
d. Immediate repair of eroded areas.
C. Maintenance of- side slopes in accordance with approved plans and specifications.
f: Debris removal and unclogging of outlet structure, orifice device and catch basins and piping.
g. Access to the outlet structure must be available at all times.
4. Records of maintenance activities must be kept and made available upon request to authorised personnel
of DWQ. 'file records will indicate the date, activity, name of person performing the work and what actions
were taken.
Decorative spray fountains will not be allowed in the stormwater treatment system.
6. The lacllhies shall be C011StrLICtcd as shown on the approved plans.This his permit shall become voidable Unless
the facilities are constructed in accordance with the conditions of this permit, the approved plans and
specifications, and other supporting data.
7. Upon completion Of construction, prior to issuance of a Certificate of Occupancy, and prior to operation of
this permitted facility, a certification must be received from an appropriate designer for the system installed
certifying that the permitted facility has been installed in accordance with this permit, the approved plans
and specifications, and other supporting documentation. Any deviations from the approved plans and
specifications must be noted on the Certification.
f the stormwater system was used as an 171'rosion Control device, it must be restored to design condition prior
to operation as a stormwater treatment device, and prior to occupancy of the facility.
9. A modification must be permitted prior to any construction. The following items will require a modification
to the permit:
a. Any revision to the approved plans, regardless of size.
b. ProIcet nallic change.
C. `I'ransfer of ownership.
d. Redesign or addition to the approved amount of built -Upon area.
C. Further subdivision, acquisition, or sale of the project arca.'1']le project area is defined as all property
owned by the permittee, for which Sedimentation and hrosion Control flan approval was sought.
f: Ijilling in, altering, or piping of ally vegetative conveyance shown on the approved plan.
10. The Director may determine that other revisions to the project should require a modification to the permit.
11. A copy of -the approved plans and specifications shall be maintained on file by the PCrIllittCC for a minimum
of ten years from the date of the completion of construction.

1�
c� State Storlllwater Management Systems
Permit No. SW8 000727
12. Prior to the sale ofany portion of the property, an access/maintenance casement to the storillwater facilities
shall be granted in favor of the permittee if access to the stormwater facilities will be restricted by the sale
of any portion of the property.
13. The permitter is responsible for verifying; that the proposed built -upon area does not exceed the allowable
built -upon area.
14. The Director nlay notify the permitter when the permitted site does not sleet one or more of the illininlilnl
requirements ofthe permit. Within the time franc speci Fled in the notice, the perm ittec shall submit a written
time schedule to the Director Im modifying; the site to meet minimum requirements. The pernlittee shall
provide copies of revised plans and certification in writing; to the Director that the changes have been made.
15. The pernlittee shall notify the Division of any name, ownership or mailing address changes within 30 clays.
111. GENERAL CONDITIONS
This permit is not transferable. In the event there is a desire for the facilities to change ownership, or there
is I name Change of the Permittee, a formal permit request 111LIst be Submitted to the Division of Water
Quality accompanied by all application fee, documentation from the parties involved, and other supporting
materials as may be appropriate. The approval of this request will be considered on its merits and may or
may not be approved.
I'ailure to abide by the conditions and limitations contained in this permit may subject the Permittee to
enforcement action by the Division of Water Quality, in accordance with North Carolina Gcneral Statute
143-215.6A to 143-215.6C.
3,'['Ile iSSllance of tills permit does not preclude the Permittee from complying with any and all SWWWS, I'uICS,
I'Cglllations, of ordinances which may be iIllposed by other government agencies (local, state, and federal)
which have jurisdiction.
4. In the event that the facilities fail to perform satisfactorily, IilCllyding the creation of nuisance conditions,
the Permittee shall take immediate corrective action, InClUding those as may be required by this Division,
such as the construction of additional or replacement stormwater management systems.
The pernlittee grants DENR Staff permission to enter the property for the purpose of' inspecting all
components of the permitted stormwater management facility.
The permit may be modified, revoked and reissued or terminated for cause. The filing of a request for a
permit modification, revocation and reissuance or termination does not stay any permit condition.
Unless specified elsewhere, permanent seeding; requirements for the stormwater control must follow the
guidelines established in the North Carolina Erosion and Sediment Control Planning; and Design Manual.
Permit issued this the 21 st day of December, 2000.
NORTH CAROLINA F_NVIRONMf?NTAI., MANAGEMENT COMMISSION
Kerr T. Stevens, Director
Division of Water Quality
By Authority of the I'l,'nvironnlental Management Commission
Permit Number SW8 000727

State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
Wilmington Regional Office
,lames B.1-1int, Governor
FAX COVER SHEET
Date: September 15, 2000
To: Phil Tripp, Project Engineer
Company: Tripp Engineering, P.C.
FAX #: [phone]
Bill Holman, Secretary
No. of Pages: 1
From: Scott Vinson
Water Quality Section - Stormwater
FAX 9: 9.10-350-2004
Phone 9: 910-395-3900
DWQ Stormwater Project #SW$ 000727
Project Name: David Byrd's Automotive Services
MESSAGE:
Phil,
1. Please show or note on the plans that the roof drainage from the buildings will be
collected in the fore bay of the pond.
2. Delineate the wetlands on site or note on the plans that none exist.
3. Please dimension the permanent pool of the pond.
4. Please provide the required 3.1, LW ratio in the design of the pond.
S:1WQSISTORM WA,r\ADDIN 1-01000727.SEP
127 Cardinal Drive Extension, Wihnington, NC 28405-3845 'Telephone [phone] FAX [phone]
An Equal Opportunity Affirmative Action Employer

FILE MODE - _
012 MEMORY TX
P. 1
COMMUNICATION RESULT REPORT ( SEP.15.2000 2:32PM )
TTI DENR WIRO
OPTION ADDRESS (GROUP) RESULT PAGE
------------------ -------9-7635631------------- P. 1/1
OK
REASON FOR ERROR ) BUSY
E-3) NO ANSWER
E-1) HANG UP OR LINE FAIL E-E-2) NO FACSIMILE CONNECTION
State of North Carolina.
Department of Environment and Natural Resources
Division of Water Q,4ality
i Wilmington Regional Office
James B.Hunt, Governor
FAX COVER SHEET
Bill Holman, Secretary
Date: September 15, 2000 No. of Pages: Y
To: Phil Tripp, Protect Engineer From: Scott Vinson
Company: Tripp Engineering, P.C. Water Quality. Section - Stormwater
FAX #: [phone] FAX #: / 910-350-2004
PhaIIe #: 910-395-3900
DWQ Stormwater Project #SWS 000727
Project Name: David Byrd's Automotive Services
MESSAGE -
Phil,
I . Please show or note on the plans that the roof drainage from the buildings Will be
collected in the fore bay of the pond.
2. Delineate the wetlands on site or note on the plans that none exist,
3. Please dimension the permanent pool of the pond.
Aril--.,....«_._ a - -, . - . - --

7124/00
CDC
AUTOMOTIVE SERVICES
Stormwater Calculations
Total Dmin a Area
ft.
acres
70 3061
1.61
Impervious Area
Land Use
s . ft,
acres
buildings
9,436
0.22
parkinas haft
20.682
0.47
existina sidewalk
2,212
0.05
existing building
7,527
0.17
lexisfing gravel
9,849
0.23
[existing parking
7,270 1
0.17
Total
56,978
1 1.31
Stormwater Calculations:
Time of Concentration:
1+ydraulic Length (L) d 1,300 ft.
change in Height (H) = 4.5 ft.
Tc • (L3 /H)'l 1 128 ,
17.29 min.
Flow for 10 year, 6 hour Storm (0,0)
QPRE _ (CPRP) x 01a) x (Area)
a 2.54 cfs
Qpov _ (Cpo$T) x (iso) x (Area)
8.34 cfs
0011 aroma a i,a aC - f V ar 0- :
CN = (98)(% imp-) + (60)(1-% imp.)
91
P = 4.B2 in. forl0yr, 6 hr storm
S = 10001CN - 10
+ 0.99
Depth (D)= jP-(0.2)(S)]2I [P+(0.6)(S)1
= 3.81 in.
Time to Peak Flow:
TP = [(43.5)(13)(Area)) I Q2.PosT
32.06 min.
Detention Pond Desisln:
Pend Size•
Elevation
ft.
Surface Area
(sq. ft.
Normal Pool
25,00
2,986
Flood Pool
26.50
4,057
Top of Bank
28.00
5,252
Bottom of }cool
19.00
437
% impervious = 0.810
= 61.0%
say 81.0%
CPRE = 0.25
CposT _ (% imp.)(.95)+(1-% imp.)(.25)
0.82
I,o = 6.30 in/hr
175 = 7.13 in/hr
Flow for 25 year, 6 hour Storm (O25Y
QPRE _ (CPRE) x (125) x (Area)
= 2.88 cfs
QPosr _ (CPS) x (12S) x (Area)
= 9.44 cfs
bore 5sorage s:apacay Tor zz year worm:
CN = (98)(% imp.) + (60)(1-% imp,)
91
P = 5.71 in. for 25 yr, 6 hr storm
S = 10001CN - 10
= 0.99
Depth (D)= (P-(0.2)(S))21 [P+(0.8)(S)]
4.67 in.
Time to Peak Flow:
TP = [(43.5)(D)(Area)) I 010,Posr
= 34.77 min.
State Surface Area Requirement at normal
Pond side slopes = 3 :1
Depth below N.P. = 6.5 ft.
SAIDA = 0.0406
(Chart for 90% TSS Removal for Wet Detention
Pond without Vegetative Filter
Required SA = (SNDA) x (Total Drainage Area)
2.854 s . ft.
Provided Stoma a Volume: State Volume Required for Storage of first 1' of runoff:
Vol. _ ((Normal pool SA + Rood Pool SA) ! 21 Vol.- [(1112) x (DA) x (% imp.)] +
x (F.P. elev. - N.P. elev.) [(1112) x (DA) x (1-% imp.) x C)
5,282 cu. ft. C = 0.2
��1111111111l1J1///� 4,970 cu. ft.
to 374 ; CL 4
�//1fI!!![[i1111111
00057POND.xis 1 cf 2

7124100 AUTOMOTIVE SERVICES
CDC Stormwater Calculations
Pond VoWmo;
Bottom SA - 431 sq. ft.
Normal Pool SA - 2.986 5q. ft.
Vol. _ M.P. SA + Bottom, $A) / 2] x (N.P. el. - Bottom el.)
9,397 cu. ft.
Forebay:
Required Volume
Vol.- 20% of total permenant storage volume
1,879 cu.ft.
Outlet Structura_DesiAri
Flow for 2-day drawdown:
for 1 st 1' of stormwater, ,
0 = Required Vol. 1 172,800 sec. (2-days)
0.029 cis
Required Area of Pipe for 2-day drawdown:
A- 0 / [Cd x SQRT(2 x g x h)]
Cd - 0.6
g = 32.2 ft.ls2
h - (F.P. olev.- N.P. elay.)12
= 0.75 R.
A - 0,0069 S . ft.
Diameter of Pine for 2-dav drawdown:
DIA. = SQRT((A x 4)1 pi]
= 0.0937 ft.
= 1.12 in.
'Use: 1.0 in diameter pipe
Outlet Structure Chock:
Using a 4' x 4' Basin,
Perimeter (L) - 16 ft.
Q o CIA
C = (% imp.)(.95) + (1-% imp.)(.25)
= 0.82
1 = 7.13 in. for a 25 yr. Storm
A = 1.61 Acres
9,44 cfs
Q- CwxLxH"5
H a [Q I (Cw x L)]203
Cw = 3
0.34 ft.
Peak elevation = Hood pool elevation + H
26.84 ft.
Provided Volume
Bottom SA = 298 sq, ft.
Normai Pool SA = 921 sq. ft.
Vol. _ [(N.P. SA + Bottom SA)12] x (N.P. el. - Bottom el.)
1,829 cu.ft.
depth = 3 ft.
Flow for 5-day drawdown:
1:
!C11
st 1' of stormwater,
= Required Vol. 1 432,000 sec. (5-days)
= 0.012 cfs
Required Area of Pipe for 5-day drawdown:
A- QI[CdxSQRT(2xgxh)]
Cd - 0.6
g = 32.2 ft.ls2
h = (F.P. elev. - N.P. elev.)1 2
0.75 ft.
A = 0,0028 sq. ft.
Diameter of Pipe for 5-day drawdown:
OIA. = SORT[(A x 4)1 pi]
= 0.0593 ft.
= 0.71 in.
00057POND.xis 2 of 2
00057

07/25/00
TE 00057
Stormwater Narrative
Automotive Services
New Hanover County, NC
The total drainage area of this project is 1.61 acres. Existing impervious area is 26,858
sf. One proposed building of 9,436 sf and 20,682 sf of asphalt access area will be
constructed. The total existing and proposed built upon area is 81.0% impervious of the
1.61 acre site.
Stormwater runoff will be handled by a proposed wet detention pond designed to exceed
the state's requirement of the first one inch of runoff. This pond will drain to the
Northeast Cape Fear River with a Classification of C-SW. A vegetated filter is not
required due to the 90% TSS removal used in the wet detention design.

C
July 25, 2000
TTRIPP ENGINEERING J P.C. Y
419 Chestnut Street
Wilmington, North Carolina 28401
Phone: [phone] • FAX:
JUL A 6 IAA®
NCDENR
Division of Environmental Management
Water Quality Section
127 Cardinal Drive
Wilmington, NC 28405-3845
Attn: Ms. Linda Lewis lX�
Re: Automotive Services
New Hanover County, NC
TE 00057
Dear Linda:
Enclosed please find two (2) sets of plans, one (1) signed original and one (1)
copy of the application form with narrative, one (1) wet detention basin supplement, two
(2) sets of signed sealed calculations and one check for the application fee.
Please review for approval and contact us with any questions or comments.
Thank you.
Sincerely,
Tripp Engineering, P.C.
9" (04 /-;�
Charles D. Cazier, E.I.
CDC:dcb
Enc.