SW8040323_HISTORICAL FILE_20061012

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SW8 QLAC)' 23
DOC TYPE
❑ CURRENT PERMIT
❑ APPROVED PLANS
HISTORICAL FILE
❑ COMPLIANCE EVALUATION INSPECTION
DOC DATE
20 CAP t o t 2
YYYYMMDD

Cf
Michael F. Easley, Governor
William G. Ross Jr., Secretary
North Carolina Department of Environment and Natural Resources
� 'i
October 12, 2006
Jon T. Vincent, Member Manager
Tri-Coast Properties, LLC
1508 Military Cutoff Road, Suite 302
Wilmington, NC 28403
Subject: Stormwater Permit No. SW8 040323 Modification
Shallotte Shops
High Density Project
Brunswick County
Dear Mr. Vincent:
Alan W. Klimek, P.E. Director
Division of Water Quality
DWQ FILE COPY
The Wilmington Regional Office received a complete Stormwater Management Permit
Application for Shallotte Shops on August 8, 2006. Staff review of the plans and specifications
has determined that the project, as proposed, will comply with the Stormwater Regulations set
forth in Title 15A NCAC 2H.1000. We are forwarding Permit No. SW8 040323 Modification
dated October 12, 2006, for the construction of the subject project.
This, permit shall be effective from the date of issuance until October 12, 2016, and shall be
subject to the conditions and limitations as specified therein. Please pay special attention to
the Operation and Maintenance requirements in this permit. Failure to establish an adequate
system for operation and maintenance of the stormwater management system will result in
future compliance problems.
If any parts, requirements, or limitations contained in this permit are unacceptable, you have
the right to request an adjudicatory hearing upon written request within thirty (30) days
following receipt of this permit. This request must be in the form of a written petition,
conforming to Chapter 150B of the North Carolina General Statutes, and filed with the Office of
Administrative Hearings, P.O. Drawer 27447, Raleigh, NC 27611-7447. Unless such demands
are made this permit shall be final and binding.
If you have any questions, or need additional information concerning this matter, please
contact Rhonda Hall, or me at [phone].
Sincerel
Ed Beck
Regional Supervisor
Surface Water Protection Section
ENB/rbh: S:\WOS\STORMWAT\PERMIT\040323Mod.oct06
cc: Jonathan W. Ham, Tripp Engineering, P.C.
Brunswick County Building Inspections
Rhonda Hall
Wilmington Regional Office
Central Files Nor,thcarolina
,Naturally
North Carolina Division of Water Quality 127 Cardinal Drive Extension Wilmington, NC 28405 Phone [phone] Customer Service
Wilmington Regional Office Internet: www, newateraualitv.org Fax [phone]
An Equal OpportunilylAflirmative Action Employer— 50% Recycled110 % Post Consumer Paper

State Stormwater Management Systems`
Permit No. SW8 040323 Modification
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
STATE STORMWATER MANAGEMENT PERMIT
HIGH DENSITY DEVELOPMENT
In accordance with the provisions of Article 21 of Chapter 143, General Statutes of
North Carolina as amended, and other applicable Laws, Rules, and Regulations
PERMISSION IS HEREBY GRANTED TO
Jon T. Vincent, Tri-Coast Properties, LLC
Shallotte Shops
Brunswick County
FOR THE
construction, operation and maintenance of a wet detention pond in compliance with
the provisions of 15A NCAC 2H .1000 (hereafter referred to as the "storm water rules')
and the approved stormwater management plans and specifications and other
supporting data as attached and on file with and approved by the Division of Water
Quality and considered a part of this permit.
This permit shall be effective from the date of issuance until October 12, 2016, and
shall be subject to the following specified conditions and 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.
This stormwater system has been approved for the management of stormwater
runoff as described in Section 1.6 on page 3 of this permit. The stormwater
control has been designed to handle the runoff from 68,366 square feet of
impervious area.
The tract will be limited to the amount of built -upon area indicated on page 3 of
this permit, and per approved plans.
4. All stormwater collection and treatment systems must be located in either
dedicated common areas or recorded easements. The final plats for the project
will be recorded showing all such required easements, in accordance with the
approved plans.
The runoff from all built -upon area within the permitted drainage area of this
project must be directed into the permitted stormwater control system.
Page 2 of 7

State Stormwater Management Systems
Permit No. SW8 040323 Modification
a
The following design criteria have been provided in the wet detention pond and
must be maintained at design condition:
a.
Drainage Area, 9cres:
2.04
Onsite, ft :
88,652
Offsite, ft2:
None
b.
Total Impervious Surfaces, ft2:
68,366
C.
Design Storm, inches:
1
d.
Pond Depth, feet:
5.5
e.
TSS removal efficiency:
90%
f.
Permanent Pool Elevation, FMSL:
31.00
g.
Permanent Pool Surface Area, ft2:
4,668
h.
Permitted Storage Volume, ft3:
5,716
i.
Temporary Storage Elevation, FMSL:
32.10
j.
Controlling Orifice:
1"0 pipe
k.
Permitted Forebay Volume, ft3:
2,627
I.
Receiving Stream/River Basin:
Shallotte River/Lumber
M.
Stream Index Number:
15-25-2-(7.5)
n.
Classification of Water Body:
"SC, HQW"
II. SCHEDULE OF COMPLIANCE
1. The stormwater management system shall be constructed in its entirety,
vegetated and operational for its intended use prior to the construction of any
built -upon surface.
2. During construction, erosion shall be kept to a minimum and any eroded areas of
the system will be repaired immediately.
3. The permittee shall at all times provide the operation and maintenance
necessary to assure the permitted stormwater system functions at optimum
efficiency. The approved Operation and Maintenance Plan must be followed in
its entirety and maintenance must occur at the scheduled intervals including, but
not limited to:
a. Semiannual scheduled inspections (every 6 months).
b. Sediment removal.
C. Mowing and revegetation of slopes and the vegetated filter.
d. Immediate repair of eroded areas.
e. Maintenance of all slopes in accordance with approved plans and
specifications.
f. Debris removal and unclogging of outlet structure, orifice device, flow
spreader, catch basins and piping.
g. Access to the outlet structure must be available at all times.
Page 3 of 7

State Stormwater Management Systems
Permit No. SW8 040323 Modification
4. Records of maintenance activities must be kept and made available upon
request to authorized personnel of DWQ. The records will indicate the date,
activity, name of person performing the work and what actions were taken.
5. Decorative spray fountains will be allowed in the stormwater treatment system,
subject to the following criteria:
a. The fountain must draw its water from less than 2' below the permanent
pool surface.
b. Separated units, where the nozzle, pump and intake are connected by
tubing, may used only if they draw water from the surface in the
deepest part of the pond.
c. The falling water from the fountain must be centered in the pond, away
from the shoreline.
d. The maximum horsepower for a fountain in this pond is 1/8 horsepower.
6. The facilities shall be constructed as shown on the approved plans. This 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.
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. A
modification may be required for those deviations.
8. If the stormwater system was used as an Erosion 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. Access to the stormwater facilities shall be maintained via appropriate
easements at all times.
10. The permittee shall submit to the Director and shall have received approval for
revised plans, specifications, and calculations prior to construction, for any
modification to the approved plans, including, but not limited to, those listed
below:
a. Any revision to any item shown on the approved plans, including the
stormwater management measures, built -upon area, details, etc.
b. Project name change.
C. Transfer of ownership.
d. Redesign or addition to the approved amount of built -upon area or to the
drainage area.
e. Further subdivision, acquisition, lease or sale of all or part of the project
area. The project area is defined as all property owned by the permittee,
for which Sedimentation and Erosion Control Plan approval or a CAMA
Major permit was sought.
f. Filling in, altering, or piping of any vegetative conveyance shown on the
approved plan.
11. The permittee shall submit final site layout and grading plans for any permitted
future areas shown on the approved plans, prior to construction.
12. A copy of the approved plans and specifications shall be maintained on file by
the Permittee for a minimum of ten years from the date of the completion of
construction.
Page 4 of 7

State Stormwater Management Systems
Permit No. SW8 040323 Modification
13. The Director may notify the permittee when the permitted site does not meet one
or more of the minimum requirements of the permit. Within the time frame
specified in the notice, the permittee shall submit a written time schedule to the
Director for modifying the site to meet minimum requirements. The permittee
shall provide copies of revised plans and certification in writing to the Director
that the changes have been made.
III. GENERAL CONDITIONS
This permit is not transferable except after notice to and approval by the Director.
In the event of a change of ownership, or a name change, the permittee must
submit a formal permit transfer request to the Division of Water Quality,
accompanied by a completed name/ownership change form, 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. The permittee is responsible for compliance with all permit
conditions until such time as the Division approves the transfer request.
2. Failure 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 General Statute 143-215.6A to 143-215.6C.
3. The issuance of this permit does not preclude the Permittee from complying with
any and all statutes, rules, regulations, or ordinances, which may be imposed by
other government agencies (local, state, and federal) having jurisdiction.
4. In the event that the facilities fail to perform satisfactorily, including 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.
5. The permittee grants DENR Staff permission to enter the property during normal
business hours for the purpose of inspecting all components of the permitted
stormwater management facility.
6. 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.
7. 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.
8. Approved plans and specifications for this project are incorporated by reference
and are enforceable parts of the permit.
9. The permittee shall notify the Division any name, ownership or mailing address
changes within 30 days.
Permit issued this the 12th day of October, 2006.
NORTH QAfrOLINA ENVIRONMENTAL MANAGEMENT COMMISSION
for a . Klimek, P.E., Director
Division of Water Quality
By Authority of the Environmental Management Commission
Page 5 of 7

,"•OFFICE�USEONLY r �,.;, .,
Date Received
Fee Paid
Permit Number
-� -U�
yao •O4
SW - (>k_\ �J
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
This form may be photocopied for use as an original
I. GENERAL INFORMATION
I. Applicants name (specify the name of the corporation, individual, etc. who owns the project):
Tri-Coast Properties, LLC
2. Print Owner/Signing Official's name and title (person legally responsible for facility and compliance):
Jon T. Vincent, Member Manager
3. ' Mailing Address for person listed in item 2 above:
1508 Military Cutoff Road, Suite 302
City: Wilmington State: NC Zip: 28403
Telephone Number: 910-256-0101
4. Project Name (subdivision, facility, or establishment name -should be consistent with project name on
plans, specifications, letters, operation and maintenance agreements, etc.):
Shallotte Shops
5. Location of Project (street address):
4501 Main Street
City: Shallotte County: Brunswick
6. Directions to project (from nearest major intersection):
From the intersection of US 211 and US 17, travel south on 17 approximately 4 miles.
Site is on west side of the road
7. Latitude : N 340 03' 00" Longitude: W 77100' 00" of project
8. Contact person who can answer questions about the project:
Name: Phillip Tripp Telephone Number: 910-763-5100
II. PERMIT INFORMATION:
1. Specify whether project is (check one)
New Renewal X Modification
Form SWU-101 Version 3.99 Page 1 of

2. If this application is being submitted as the result of a renewal or modification to an existing permit, list
The existing permit number SW8 040323 and its issue date (if known) 04/01/05
3. Specify the type of project (check one):
Low Density X High Density Redevelop General Permit Other
4. Additional Project Requirements (check applicable blanks):
CAMA Major X Sedimentation/Erosion Control _ 404//401 Permit NPDES Stormwater
Information on required state permits can be obtained by contacting the Customer Service Center at
1-877-623-6748.
III. PROJECT INFORMATION
1. In the space provided below, summarize how stormwater will be treated. Also attach a detailed narrative
(one to two pages) describing stormwater management for the project.
Stormwater will be treated with wet detention
2. Stormwater runoff from this project drains to the C—ape-F§a River basin.
3. Total Project Area: 2.04 acres
5. How many drainage basins does the project have? I
4. Project Built Upon Area: 77.1 %.
6. Complete the following information for each drainage area. If there are more than two drainage areas in the
project, attach an additional sheet with the information for each area provided in the same format as below.
Basin°Information_.
Dramage;Basm I , ,.
,, , yy,. ,, Drauiage Basin 2�'
Receiving Stream Name
Shallotte River
Receiving Stream Class
SC HQW
Drainage Basin Area
2.04 ac
Existing Impervious * Area
-
Proposed Impervious * Area
1.57 ac
% Impervious* Area (total)
77.1%
,I'mperviou0'Surface Area,`,, =a
'l a ' ;;,!tDrainage+Ba_sm I �, ,,
, ,.
,� Drainage,Basm,2P.,;
On -site Buildings
15,032 sf
On -site Streets
-
On -site Parking
48,909 sf
On -site Sidewalks
4,425 sf
Other on -site
Off -site
Total:
E=68,366 sf
E_
* Impervious area is defined as the built upon area including, but not limited to, buildings, roads, parking
areas sidewalks, gravel areas, etc.
Form SWU-101 Version 3.99
Page 2 of 4

7. How was the off -site impervious area listed above derived?
IV. DEED RESTRICTIONS AND PROTECTIVE COVENANTS
The following italicized deed restrictions and protective covenants are required to be recorded for all
subdivisions, outparcels and future development prior to the sale of any lot. If lot sizes vary significantly, a
table listing each lot number, size and the allowable built -upon area for each lot must be provided as an
attachment.
1. The following covenants are intended to ensure ongoing compliance with slate stormwater management permit
number as issued by the Division of Water Quality. These covenants may
not be changed or deleted without the consent ofthe State.
2. No more than square feet of any lot shall be covered by structures of impervious materials.
Impervious materials inchide asphalt, gravel, concrete, brick, stone, slate or similar material but do not include wood
decking or the water surface of shimming pools.
3. Swales shall not be filled in, piped or altered except as necessary to provide driveway crossings.
4. Built -upon area in excess of the permitted amount requires a state slornnvater management permit modification prior
to construction.
5. All permitted runofffrom outparcels or future development shall be directed into the permitted stormwater control
system. These connections to the stormwater control system shall be performed in a manner that maintains the
integrity and performotce of the system as permitted
By your signature below, you certify that the recorded deed restrictions and protective covenants for this project
shall include all the applicable items required above, that the covenants will be binding on all parties and
persons claiming under them, that they will run with the land, that the required covenants cannot be changed or
deleted without concurrence from the State, and that they will be recorded prior to the sale of any lot.
V. SUPPLEMENT FORMS
The applicable state stormwater management permit supplement form(s) listed below must be submitted for
each BMP specified for this project. Contact the Stormwater and General Permits Unit at [phone] for
the status and availability of these forms.
Form SWU-102
Form SWU-103
Form SWU-104
Form SWU-105
Form SWU-106
Form SWU-107
Form SWU-108
Form SWU-109
Wet Detention Basin Supplement
Infiltration Basin Supplement
Low Density Supplement
Curb Outlet System Supplement
Off -Site System Supplement
Underground Infiltration Trench Supplement
Neuse River Basin Supplement
Innovative Best Management Practice Supplement
Form SWU-101
Version 3.99
Page 3 of 4

VL SUBMITTAL REQUIREMENTS
Only complete application packages will be accepted and reviewed by the Division of Water Quality (DWQ).
A complete package includes all of the items listed below. The complete application package should be
submitted to the appropriate DWQ Regional Office.
I. Please indicate that you have provided the following required information by initialing in the space
provided next to each item.
Applicant's Initials
• Original and one copy of the Stormwater Management Permit Application Form Lj�
• One copy of the applicable Supplement Form(s) for each BMP
• Permit application processing fee of $420 (payable to NCDENR) r jY
• Detailed narrative description of stormwater treatment/management
• Two copies of plans and specifications, including:
- Development/Project name
- Engineer and firm
- Legend
- North arrow
- Scale
- Revision number and date
- Mean high water line
- Dimensioned property/project boundary
- Location map with named streets or NCSR numbers
- Original contours, proposed contours, spot elevations, finished floor elevations
- Details of roads, drainage features, collection systems, and stormwater control measures
- Wetlands delineated, or a note on plans that none exist
- Existing drainage (including off -site), drainage easements, pipe sizes, runoff calculations
- Drainage areas delineated
- Vegetated buffers (where required)
VII. AGENT AUTHORIZATION
If you wish to designate authority to another individual or firm so that they may provide information on your
behalf, please complete this section.
Designated agent (individual or firm): Tripp Engineering, P.C.
Mailing Address: 419 Chestnut Street
City: Wilmington State: NC Zip: 28401
Phone: [phone] Fax: [phone]
VIII. APPLICANT'S CERTIFICATION
1, (print or type name o person listed in eneral Information, item 2) Jon T. Vincent
certify that the informa 'on included o his permit application form is, to the best of my knowledge, correct and
that the project will be onstructed in onformance with the approved plans, that the required deed restrictions
and protectiv covenant will be rec rded, and that the proposed project complies with the requirements of 15A
NCAC 2H .10 0.
Signature:
Form SWU-101\ Version3.99 Page 4of4
Date: j�l d 6

TRIPP ENGINEERING, P.C.
419 Chestnut Street
Wilmington, North Carolina 28401
Phone: [phone] • FAX: [phone]
August 7, 2006
NCDENR
Division Water Quality
127 Cardinal Drive
Wilmington, NC 28405-3845
Attn: Ms. Linda Lewis
Re: Shallotte Shops
Permit No. SW8 040323
TE 06076
Dear Linda:
RECEIVED
AUG 0 8 20M
Baal Sc v No
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 calculations and one check for the application fee.
Please review for approval and contact us with any questions, comments or if
you need additional information. Thank you.
Sincerely,
Tripp Engineering, P.C.
onathan W. Ham, E.I.
JWH:dcb
Enc.

7121 /2006
JWH
Shallotte Shops Expansion
Stormwater Calculations
06076
Total Drainage Area
sq. ft.
acres
88,652
2.04
Impervious Area
Land Use
s .ft.
acres
buildings
15,032
0.35
asphalt
48,909
1.12
concrete
4,425
0.10
future
0
0.00
Total
68,366
1.57
Stormwater Calculations:
Time of Concentration
Hydraulic Length (L) = 630 ft.
change in Height (H) = 4 ft.
Tc = (L' /H)-' / 128
= 7.84 min.
Flow for 10 year, 6 hour Storm (010)
QPRE _ (CPRE) x (110) x (Area)
= 321 afs
QPosT = (CPosT) x (110) x (Area)
10.13 cfs
Detention Pond Design:
Pond Size:
Elevation
(ft.)
Surface Area
((sq. ft.
Normal Pool
31.00
4,668
Flood Pool
32.10
5,725
Top of Bank
35.00
8,837
Bottom of Pool
25.50
320
Total Provided Storage Volume:
Vol. _ [(Normal pool SA + Flood Pool SA) / 2]
x (F.P. elev. - N.P. elev.)
= 5,716 cu.ft.
06076Pond
% impervious = 0.771
= 77.1%
say 78.0%
CPRE - 025
CPosT = (% imp.)(.95)+(1% imp.)(.25)
= 0.79
110 = 6.30 in/hr
I50 = 7.79 in/hr
Flow for 50 year, 6 hour Storm (Q50)
QPRE _ (CPRE) x (110) x (Area)
= 3.96 cfs
QPosT = (CPosT) x (110) x (Area)
= 12.52 cfs
State Surface Area Reauirement at normal pool
Pond side slopes =
Depth below N.P. =
3 :1
5 ft.
SA/DA =
0.0499
(Chart for 90% TSS Removal
for Wet Detention
Pond without Vegetative
Filter
Required SA =
(SA/DA) x (Total Drainage Area)
=
4,424 s . ft.
State Volume Requirement for Storage of first 1" runoff
of 2
Rv = .05+.009(Percent Impervious)
= 0.7440554 in/in
Vol. _ (Design Rainfall)(Rv)(Drainage Area)
= 5497 cu.ft.
1 1.

e lA3s
�49�9 �9Ntia•'fA���:

i
7/21 /2006
JWH
Pond Volume:
Shallotte Shops Expansion
Stormwater Calculations
Bottom SA = 320 sq. ft.
Normal Pool SA = 4,668 sq. ft.
Vol. _ [(N.P. SA + Bottom SA) / 21 x (N.P. el. - Bottom el.)
= 13,717 cu.ft.
Forebay:
Required Volume
Vol. = 20% of storage volume
2,743 cu.ft.
Provided Volume
Bottom SA =
356 sq. ft.
Normal Pool SA =
1,395 sq. ft.
Vol. _
[(N.P. SA + Bottom SA) / 21 x (N.P. el. - Bottom el.)
=
2,627 cu.ft.
depth =
3 ft.
Outlet Structure Design:
Flow for 2-day drawdown:
for 1 st 1" of stormwater,
Q = Required Vol. / 172,800 sec. (2-days)
0.032 cfs
rtegwrea Area or Hipe Tor 2-oay drawdown
A= Q/[CdxSQRT(2xgxh)]
Cd = 0.6
g = 32.2 ft./sz
h = (F.P. elev.- N.P. elev.) /2
= 0.55 ft.
A = 0.0089 sq. ft.
Diameter of Pipe for 2-day drawdown
DIA. = SQRT[(A x 4) / pi]
0.1065 ft.
= 1.28 in.
Use 1.0" orifice
Outlet Structure Check:
Using a 4' x 4' Basin,
Perimeter L) = 16 ft.
Q = CIA
C = (% imp.)(.95) + (1 % imp)(25)
= 0.79
1 = 6.30 in. for a 10 yr. Storm
A = 2.04 Acres
= 10.13 cfs
Flow for 5-day drawdown:
for 1 st 1" of stormwater,
Q = Required Vol. /432,000 sec.(5-days)
= 0.013 cfs
A= Q/[Gdx6QHI(2xgxh)]
Cd = 0.6
g = 32.2 ft./s2
h = (F.P. elev. - N.P. elev.) / 2
= 0.55 ft.
A = 0.0036 sq. ft.
Diameter of Pipe for 5-day drawdown:
DIA. = SQRT[(A x 4) / pi]
= 0.0674 ft.
= 0.81 in.
Q= CwxLxH'
H = [Q / (Cw x L)r
Cw = 3
0.35 ft.
Peak elevation = flood pool elevation + H
= 32.45 ft.
06076
06076Pond .. 2 of 2

07/26/06
Stormwater Narrative
Shallotte Shops
Brunswick County, NC
TE 06076
Shallotte Shops is a 2.04 acre existing tract proposed for a commercial shopping center.
Impervious areas include 15,032 sf of building, 4,425 sf of sidewalk and 48,909 sf of
asphalt. The total lot impervious area is 68,366 sf or 77.1 % impervious.
The project will be treated by wet detention. The detention pond is designed to meet the
State's F and the County's 10-year pre -post requirement. Outflow from the pond drains
to the Shallotte River, classification SC HQW.