SW6090401_CURRENT PERMIT_20090506 (2)

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT. NO.
SW-6y /
DOC TYPE
CURRENT PERMIT
APPROVED PLANS
❑ HISTORICAL FILE
❑ COMPLIANCE EVALUATION INSPECTION
DOC DATEQ,
�p
YYYYMMDD

NCDENR
North Carolina Department of Environment and Natural Resources
Beverly Eaves Perdue
Governor
Mr. Rhett Bailey
Area Facilities Resource Manager
201 South Taraboro Street
Wilson, North Carolina 27893
Division of Water Quality
Coleen H. Sullins
Director
May 6, 2009
Subject: Storinwater Permit No. SW6089244— 6.o7 e 407
BB&T, Erwin North Carolina
High Density Commercial Wet Pond Project
Harnett County
Dear Mr. Bailey:
Dee Freeman
Secretary
The Stormwater Permitting Unit received a complete Stormwater Management Permit Application
for BB&T in Erwin North Carolina on May 1, 2009. Staff review of the plans and specifications
has detennined that the project, as proposed, will comply with the Stormwater Regulations set
,kAforth in Title 15A NCAC 21-1.1000 and Session Law 2006-246. We are forwarding Permit No.
0 S W6080261, dated May 6, 2009, for the construction, operation and maintenance of the subject
project and the stormwater BMPs.
This permit shall be effective from the date of issuance until May 5, 2019, 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
inspection 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 2761 1-7447. Unless such demands are made this permit shall be
final and binding.
This project will be kept on file at the Fayetteville Regional Office. If you have any questions, or
need additional information concerning this matter, please contact Mike Randall at (919) 807-
6374; or [e-mail].
Sincerely, g�R
for Coleen H. Sullins
cc: Fayetteville Regional Office ���
Central Files
SPU Files
Wetlands and Stormwater. Branch one t,
1617 Mail Service Center, Raleigh, North Carolina 27699-1617 l�OftilCafOtlfla
Location: 512 -8 N. Salisbury St. Raleigh,-6494 \ Carolina r SeNi �RtllCR��IJ'
Phone: [phone] FAX: 919-807-fi4941 Customer Service: 1-877-623-6748 L
Internet: www.ncwaterquality.org
An Equal Opportunity 1 ARrma6va Action Employer

State Stormwater Permit
Permit No.SW6090401
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
Mr. Rhett Bailey, Area Facilities Resource Manager
BB&T in Erwin, North Carolina
Harnett County
FOR THE
construction, operation and maintenance of.a wet detention pond in compliance with
the provisions of 15A NCAC 2H .1000 and S.L. 2006-246 (hereafter referred to as the
"stormwater 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 May 5, 2019, and shall be
subject to the following specified conditions and limitations:
I. DESIGN STANDARDS.
1. 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 management of stormwater
runoff as described in Section 1.6 on page 2 of this permit. The stormwater
control has been designed to handle the runoff from 43,200 square feet of
impervious area.
3. The tract will be limited to the amount of built -upon area indicated on page 2 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.
5. 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 1 of 6

State Stormwater Permit
Permit No.SW6060401
The following design criteria have been provided in the wet detention pond and
must be maintained at design condition:
a. Drainage Area - Onsite, ft2:
Drainage Area - Offsite, ft2:
b. Total Impervious Surfaces, ft2:
Buildings ft :
Roads/Parking, ft2:
Sidewalks, ft
Other, ft2.
Offsite, ft�:
c. Pond Depth, feet:
d. TSS removal efficiency:
e. Design Storm:
f. Permanent Pool Elevation, FMSL:
g. Temporary Pool. Elevation, FMSV
h. Permitted Surface Area @PP, ft
i. Permanent Pool Volume, ft3:
j. Temporary Pool Volume, ft3:
k. Forebay Volume, ft
I. Controlling Orifice:
m. Receiving. Stream/River Basin:
n. Stream Index Number:
o. Classification of Water Body:
II. SCHEDULE OF COMPLIANCE
The stormwater management system shall
vegetated and operational for its intended
built -upon surface.
52,400
0
43,200
6,500
28,400
1,125
1,000
6,175
5.5
90%
1.0 inch
179.00
179.90
2,951
10,785
3,470
2,046
1.0"0 pipe
Black River
18-68-12-1
C: Sw
be constructed in its entirety,
use prior to the construction of any
2. During construction, erosion shall be kept to a minimum and any eroded areas of
the system will be repaired immediately.
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.
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. 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.
Page 2 of 6

State Stormwater Permit
Permit No.SW6090401
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.
7. 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.
8. 'Access to the stormwater facilities shall be maintained via appropriate
easements at all times.
9. 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.
10. The permittee shall submit final site layout and grading plans for any permitted
future areas shown on the approved plans, prior to construction.
11. 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.
12. 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 completed Name/Ownership Change form, to the Division of Water
Quality, signed by both parties, and accompanied by supporting documentation
as listed on page 2 of the form. The project must be in good standing with the
Division. The approval of this request will be considered on its merits and may or
may not be approved.
Page 3 of 6

State Stormwater Permit
Permit No.SW6090401
2. The permittee is responsible for compliance with all permit conditions until such
time as the Division approves the transfer request.
3. 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.
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.
5. 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.
6. 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.
7. The permit issued shall continue in force and effect until revoked or terminated.
The permit may be modified, revoked and reissued or terminated for cause. The
filing of a request for a permit modification, revocation and re -issuance or
termination does not stay any permit condition.
8. 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.
9. Approved plans and specifications for this project are incorporated by reference
and are enforceable parts of the permit.
10.The issuance of this permit does not prohibit the Director from reopening and
modifying the permit, revoking and reissuing the permit, or terminating the permit
as allowed by the laws, rules and regulations contained in Session Law 2006-
246, Title 15A NCAC 2H.1000, and NCGS 143-215.1 et.al.
11.The permittee shall notify the Division of any name, ownership or mailing
address changes at least 30 days prior to making such changes.
12.The permittee shall submit a renewal request with all required forms and
documentation at least 180 days prior to the expiration date of this permit.
Permit issued this the 6th day of May, 2009.
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
for uoieen H. 5umns, uirector
Division of Water Quality
By Authority of the Environmental Management Commission
Page 4 of 6

State Stormwater Permit .
Permit No.SW6090401
Stormwater Permit No. SW6080201
BB&T in Erwin, North Carolina
Harnett County
Designer's Certification
1, , as a duly registered in the
State of North Carolina, having been authorized to observe (periodically/ weekly/ full
time) the construction of the project,
BB&T in Erwin, North Carolina
(Project)
for (Project Owner) hereby state that, to the
best of my abilities, due care and diligence was used in the observation of the project
construction such that the construction was observed to be built within substantial
compliance and intent of the approved plans and specifications.
The checklist of items on page 2 of this form is included in the Certification.
Noted deviations from approved plans and. specification:
Signature
Registration Number
Date
SEAL
Page 5 of 6_

State Stormwater Permit
Permit No.SW6090401
Certification Requirements:
1. The drainage area to the system contains approximately the permitted
acreage.
2. The drainage area to the system contains no more than the permitted
amount of built -upon area.
3. All the built -upon area associated with the project is graded such that the
runoff drains to the system.
4. All roof drains are located such that the runoff is directed into the system.
5. The outlet/bypass structure elevations are per the approved plan.
6. The outlet structure is located per the approved plans.
7. Trash rack is provided on the outlet/bypass structure.
8. All slopes are grassed with permanent vegetation.
9. Vegetated slopes are no steeper than 3:1.
10. The inlets are located per the approved plans and do not cause short-
circuiting of the system.
11. The permitted amounts of surface area and/or volume have been
provided.
12. Required drawdown devices are correctly sized per the approved plans.
13.. All required design depths are provided.
14. All required parts of the system are provided, such as a vegetated shelf,
and a forebay.
15. The required system dimensions are provided per the approved plans.
Please submit this Designer's Certification to: Fayetteville Regional Office
Surface Water Protection
225 Green Street
Systel Building, Suite 714
Fayetteville, NC 28301-5043
Page 6 of 6

DWQ USE ONLY
Date Receiv d
Fee Paid
Permit Number
S
b 6
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
1. Applicants name (specify the name of the corporation, individual, etc. who owns the project):
2. Print Owner/Signing Official's name and title (person legally responsible for facility and compliance):
Rhett Bailey - Area Facilities Resource Manager
3. Mailing Address for person listed in item 2 above:
201 South Tarboro Street
Phone: (252 ) 714-2693
Email:[e-mail]
State:NC Zip:27893
Fax: ((252) ) 246-5719
4. Project Name (subdivision, facility, or establishment name -should be consistent with project name on plans,
specifications, letters, operation and maintenance agreements, etc.):
BB&T - Erwin, NC
5. Location of Project (street address):
US HWY 421, west side of entrance road to Lowes Home Improvement Store
City:Erwin County:Harnett Zip:28339
6. Directions to project (from nearest major intersection):
Site is on US HWY 421 +1- 3.5 west of the intersection of US HWY 421 & I-95.
7. Latitude:78° 38' 0" N Longitude:35° 20' 0" W of project
8. Contact person who can answer questions about the project:
Name:Mark Hargrove, PE Telephone Number: (910 ) 791-6707
Email:mhar rg oveQparamounte-eng.com
II. PERMIT INFORMATION:
1. Specify whether project is (check one):
❑New
[]Renewal ®Modification
Form SWU-101 Version 09.25.08 Pagel of 4

2. If this application is being submitted as the result of a renewal or modification to an existing permit, list the
existing permit number SW6080201 and its issue date (if known)February 18, 2009
3. Specify the type of project (check one):
❑Low Density ®High Density ❑Redevelop ❑General Permit []Universal SMP ❑Other
4. Additional Project Requirements (check applicable blanks; information on required state permits can be
obtained by contacting the Customer Service Center at 1-877-623-6748):
❑CAMA Major ®Sedimentation/Erosion Control ❑404/401 Permit ❑NPDES Industrial Stormwater
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 by the use of a wet pond sized for 90% removal of TSS
2. Stormwater runoff from this project drains to the Cape Fear River basin.
3. Total Property Area: 1.65 acres 4. Total Coastal Wetlands Area: 0 acres
5. Total Property Area (3) - Total Coastal Wetlands Area (4) = Total Project Area**:1.65 acres
6. (Total Impervious Area / Total Project Area) X 100 = Project Built Upon Area. (BUA):57.8 %
7. How many drainage areas does the project
8. 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.
For high density projects, complete the table with one drainage area for each engineered stormwater device.
Basin Information
Drainage Areal: _ ;
Dramage;Area 2
Receiving Stream Name
Black River
Stream Class & Index No.
C; Sw-18-68-12-1
Total Drainage Area (so
52,400
On -site Drainage Area (so
52,400
Off -site Drainage Area (so
Existing Impervious* Area (so
0
Proposed Impervious*Area (so
43,200
% Impervious* Area (total)
82.4
Impervious;Surface Area „ . `
- �-
° Drainage Areal " !
Drainage Area`2 `
On -site Buildings (so
6,500
On -site Streets (so
On -site Parking (so
28,400
On -site Sidewalks (so
1,125
Other on -site (so
1,000
Off -site (so
6,175
Total (so:
43,200
* Impervious area is defined as the built upon area including, but not limited to, buildings, roads, parking areas,
sidewalks, gravel areas, etc.
**Total project area shall be calculated to exclude Coastal Wetlands from use when calculating the built upon area
percentage calculation. This is the area used to calculate overall percent project built upon area (BUA).
Form SWU-101 Version 09.25.08 Page 2 of

9. - How was the off -site impervious area listed above derived?Offsite area is rear access road draining to pond
Projects in Union County: Contact the DWQ Central Office staff to check to see ifyou project is located
within a Threatened & Endangered Species watershed that may be subject to more stringent stormwater
requirements.
IV. DEED RESTRICTIONS AND PROTECTIVE COVENANTS
One of the following property 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.
Forms can be downloaded from httpJ/h2o.enr.state.nc.us/su/bmp forms.htm - deed restrictions.
Form DRPC-1
High Density Commercial Subdivisions
Form DRPC-2
High Density Developments with Outparcels
Form DRPC-3
High Density Residential Subdivisions
Form DRPC-4
Low Density Commercial Subdivisions
Form DRPC-5
Low Density Residential Subdivisions
Form DRPC-6
Low Density Residential Subdivisions with Curb Outlets
By your signature below, you certify that the recorded property restrictions and protective covenants for this
project shall include all the applicable items required in the above form, 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 NC DWQ, 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 Permitting Unit at [phone] for the status and
availability of these forms. Forms can be downloaded from httn://h2o.enr.state.nc.us/su/bmp forms.htm.
Form SW401-Low Density
Form SW401-Curb Outlet System
Form SW401-Off-Site System
Form SW401-Wet Detention Basin
Form SW401-Infiltration Basin
Form SW401-Infiltration Trench
Form SW401-Bioretention Cell
Form SW401-Level Spreader
Form SW401-Wetland
Form SW401-Grassed Swale
Form SW401-Sand Filter
Form SW401-Permeable Pavement
Form SW401-Cistern
Low Density Supplement
Curb Outlet System Supplement
Off -Site System Supplement
Wet Detention Basin Supplement
Infiltration Basin Supplement
Underground Infiltration Trench Supplement
Bioretention Cell Supplement
Level Spreader/Filter Strip/Restored Riparian Buffer Supplement
Constructed Wetland Supplement
Grassed Swale Supplement
Sand Filter Supplement
Permeable Pavement Supplement
Cistern Supplement
Form SWU-101 Version 09.25.08 Page 3 of

VI. 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 Office. (Appropriate office may be found by locating project on the
interactive online map at httn://h2o.enr.state.nc.us/su/msi maos.htm)
1. Please indicate that you have provided the following required information by initialing in the space provided
next to each item.
Initials
• Original and one copy of the Stormwater Management Permit Application Form
AINI�
• Original and one copy of the Deed Restrictions & Protective Covenants Form (if
mro la
required as per Part IV above)
• Original of the applicable Supplement Form(s) and O&M agreement(s) for each BMP
mpl�-
• Permit application processing fee of $505 (Express: $4,000 for HD, $2,000 for LD)
payable to NCDENR
w N1l -
• Calculations & detailed narrative description of stormwater treatment/management
Mro ti
• Copy of any applicable soils report
�1�
M ° 1
• Two copies of plans and specifications (sealed, signed & dated), including:
/ 1V
- Development/Project name
- Engineer and firm
-Legend
- North arrow
- Scale
- Revision number & 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 (such as additional information requests), please complete this section. (ex. designing engineer or firm)
Designated agent (individual or firm):Paramounte Engineering, Inc. - Mark Hargrove, PE
Mailing Address:5911 Oleander Drive, Suite 201
City:Wilmington State:NC Zip:28403
Phone: (910 ) 791-6707 Fax: [phone]
Email:mhar rg ove®paramounte-eng.com
VIII. APPLICANT'S CERTIFICATION
I, (print or type name of person listed in General Information, item 2) Rbett Bailey
certify that the information included on this permit application form is, to the best of my knowledge, correct and
that the project will be constructed in conformance with the approved plans, that the required deed restrictions
and protective covenants will be recorded, and that the proposed project complies with the requirements of 15A
NCAC 21­1.1009_
Signature: \ Date:
Form SWU-101Page 4 of

Permit No.
(to be provided by DWO)
Or Nl AiF
EWA
AM
l C\G
NCDENRY
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
WET DETENTION BASIN SUPPLEMENT
This form must be filled out, printed and submitted.
The Required Items Checklist (Part III) must be printed, filled out and submitted along with all of the required information.
Project name
Contact person
Phone number
Date
Drainage area number
0-791-6707
PE
II. DESIGN INFORMATION'_ - .-. a
Site Characteristics
Drainage area
Impervious area, post -development
% impervious
Design rainfall depth
Storage Volume: Non -SA Waters
Minimum volume required
Volume provided
Storage Volume: SA Waters
1.5' runoff volume
Pre -development l-yr, 24-hr runoff
Post -development 1-yr, 24-hr runoff
Minimum volume required
Volume provided
Peak Flow Calculations
Is the pre/post control of the 1yr 24hr storm peak flow required?
1-yr, 24-hr rainfall depth
Rational C, pre -development
Rational C, post -development
Rainfall intensity: 1-yr, 24-hr stone
Pre -development 1-yr, 24-hr peak flow
Post -development 1-yr, 24-hr peak Pow
Pre/Post 1-yr, 24-hr peak flow control
Elevations
Temporary pool elevation
Permanent pool elevation
SHWT elevation (approx, at the perm. pool elevation)
Top of 10ft vegetated shelf elevation
Bottom of 10ft vegetated shelf elevation
Sediment cleanout top elevation (bottom of pond)
Sediment cleanout, bottom elevation
Sediment storage provided
Is there additional volume stored above the slate -required temp. pool?
Elevation of the top of the additional volume
52,400 ft2
43,200 it'
82.44 %
1.0 in
3,459 ft'
3,470 ft'
u�1
If
tt3
0 It
ft3
Y (Y or N)
3.1 in
0.20 (unitless)
0.81 (unitless)
OK
OK, volume provided is equal to or in excess of volume required.
0.13 inlhr OK
1.38 ft'/sec
1.00 ft'Isec
-0.38 ff'/sec
179.90 fmsl
179.00 fmsl
179.00 fmsl
179.50 fmsl
178.50 first
172.00 fmsl
171.00 fmsl
1.00 It
N (Y or N)
first
Form SW401-Wet Detention Basle-Rev.5 Pans 1.811. Design Summary, Page 1 of 2

Permit No.
([o be provided by DWO)
I1..'DESIGN INFORMATION" '
Surface Areas
Area, temporary pool
4,431 ft'
Area REQUIRED, permanent pool
2,798 ft2
SAIDA ratio -
5.34 (unitless)
Area PROVIDED, permanent pool, A°,,,,y,s
2,951 ft
OK
Area, bottom of 10ft vegetated shelf, Aw, u ,
1998,ft"
Area, sediment cleanout, top elevation (bottom of pond), A,.,
1,218 ft`
Volumes
Volume, temporary pool
3,470 ft'
OK
Volume, permanent pool, Vp„r,_�
10,785 rya
Volume, forebay (sum of forebays if more than one forebay)
2,046 ft3
Forebay %of permanent pool volume
19.0% %
OK
SAIDA Table Data
Design TSS removal
90 °%
Coastal SAIDA Table Used?
Y (Y or N)
Mountain/Piedmont SAIDA Table Used?
N (Y or N)
SAIDA ratio
5.34 (unitless)
Average depth (used In SAIDA table):
Calculation option 1 used? (See Figure 10-2b)
N (Y or N)
Volume, permanent pool, Vce,,,, .
If
Area provided, permanent pool, A°,°,_.
R`
Average depth calculated
ft
Average depth used in SAIDA, d,,, (Round to nearest 0.5ft)
It
Calculation option 2 used? (See Figure 10-2b)
Y (Y or N)
Area provided, permanent pool, Ape,m °m _
2,951 ft`
OK
Area, bottom of 1OR vegetated shelf, Aw, s,
1,998 ft`
OK
Area, sediment cleanout, top elevation (bottom of pond), A., po,
1,218 k3
OK
"Depth" (distance b/w bottom of 10ft shelf and top of sediment)
6.50 ft
OK
Average depth calculated
5.65 ft
OK
Average depth used in SAIDA, it., (Round to nearest 0.511)
- 5.5 ft
OK
Drawdown Calculations
Drawdown through odfice?
Y (Y or N)
Diameter of orifice (If circular)
1.00 in
Area of orifice (if -non -circular)
In,
Coefficient of discharge (Co)
0.60 (unitless)
Driving head (Ho)
0.42 It
Drawdown through weir?
N (Y or N)
Weir type
(unitless)
Coefficient of discharge (C..)
(unitless)
Length of weir (L)
ft
Driving head (H)
ft
Pre -development 1-yr, 24-hr peak flow
1.38 ft3lsec
OK
Post -development 1-yr, 24-hr peak flow
1.00 ft'/sec
Insufficient post -development peak flow.
Storage volume discharge rate (through discharge orifice or weir)
0.01 ft'/sec
Storage volume tlmwdown time
2.78 days
OK, draws down in 2-5 days.
OK, drawdown time is correct.
Additional Information
Vegetated side slopes
3 :1
OK
Vegetated shelf slope
10 :1
OK
Vegetated shelf width
10.0 ft
OK
Length of flowpath to width ratio
4 :1
OK
Length to width ratio
4.0 :1
OK
Trash rack for overflow & orifice?
Y (Y or N)
OK
Freeboard provided
1.5 It
OK
Vegetated filter provided?
N (Y or N)
OK
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
Pond will be pumped down by mechanical means if required
Form SW401-Wet Detention Basin -Revs Parts 1. & 11, Design Summary, Pape 2 of 2

Permit
I1CREQUIRED ITEMS CHECKLIST ,
(to be provided by DWO)
Please indicate the page or plan sheet numbers where the supporting documentation can be found. An incomplete submittal package will
result in a request for additional information. This will delay final review and approval of the project. Initial in the space provided to
indicate the following design requirements have been met. If the applicant has designated an agent, the agent may initial below. If a
requirement has not been met, attach justification.
Pagel Plan
Initials
Sheet No.
rppg-
C- 3
1. Plans (1" - 50' or larger) of the entire site shoving:
C -31 1
- Design at ultimate build -out,
- Off -site drainage (if applicable),
- Delineated drainage basins (include Rational C coefficient per basin),
- Basin dimensions,
- Pretreatment system,
- High Flow bypass system,
- Maintenance access,
- Proposed drainage easement and public right of way (ROW),
- Overflow device, and
- Boundaries of drainage easement.
a>�
C - a
2. Partial plan (1" = 30' or larger) and details for the wet detention basin showing:
Outlet structure with trash rack or similar,
Maintenance access,
Permanent pool dimensions,
Forebay and main pond with hardened emergency spillway,
Basin cross-section,
Vegetation specification for planting shelf, and
Filter strip.
11,7 N9
3. Section view of the wet detention basin (1" = 20' or larger) showing:
- Side slopes, 3:1 or lower,
- Pretreatment and treatment areas, and
- Inlet and outlet structures.
M N�
G - 4
4. If the basin is used for sediment and erosion control during construction, clean out of the basin is specified
on the plans prior to use as a wet detention basin.
in till e Ca lc 6. 5. A table of elevations, areas, incremental volumes & accumulated volumes for overall pond and for Forebay,
to verify volume provided.
m v) [ — j 6. A construction sequence that shows how the wet detention basin will be protected from sediment until the
entire drainage area is stabilized.
/7114, S ce, CA e,5 7. The supporting calculations.
CA_ly �� 8. A copy of the signed and notarized operation and maintenance (O0) agreement.
/ANI% N� 9. A copy of the deed restrictions (if required).
inNl{ p pa: AW 10. A soils report that is based upon an actual field investigation, soil borings, and infiltration tests. County
Y"— soil maps are not an acceptable source of soils information.
Form SW401-Wet Detention Basin-Rev.5 Part III. Required Items Checkiist, Page 1 of 1

State Stormwater Permit
Permit No.SW6090401
6Oe V�161
Stormwater Permit No. SVV6988281- 110e—
BB&T in Erwin, North Carolina
Harnett County
Designer's Certification
i, v as a duly registered FA 1 n e- i- in the
State of North Caro ina, having been authorized to observe erio ica y eekly/ full
time) the construction of the project,
BB&T in Erwin, North Carolina
(Project)
for 16 A d / 19a.rLk (Project Owner) hereby state that, to the
best of my abilities, due care and diligence was used in the observation of the project
construction such that the construction was observed to be built within substantial
compliance and intent of the approved plans and specifications.
The checklist of items on page 2 of this form is included in the Certification.
Noted deviations from approved plans and specification:
SEAL
Signature \`� ,uu11uu,�)
Registration Number
?4rie
g/o
DateL
9742
11)�JV(Q Page 5 of 6

State Stormwater Permit
Permit No.SW6090401
Certification Requirements:
mgA 1. The drainage area to the system contains approximately the permitted
acreage.
ArJ8_2. The drainage area to the system contains no more than the permitted
amount of built -upon area.
Inph 3. All the built -upon area associated with the project is graded such that the
runoff drains to the system.
�r„Nt_ 4. All roof drains are located such that the runoff is directed into the system.
owh 5. The outlet/bypass structure elevations are per the approved plan.
mia 6. The outlet structure is located per the approved plans.
/np& 7. Trash rack is provided on the outlet/bypass structure.
1,%p4 8. All slopes are grassed with permanent vegetation.
MNN 9. Vegetated slopes are no steeper than 3:1.
/np# 10. The inlets are located per the approved plans and do not cause short-
circuiting of the system.
MN9 11. The permitted amounts of surface area and/or volume have been
provided.
pn L# 12. Required drawdown devices are correctly sized per the approved plans.
,Alvg 13. All required design depths are provided.
Av4 14. All required parts of the system are provided, such as a vegetated shelf,
and a forebay.
mvK 15. The required system dimensions are provided per the approved plans.
Please submit this Designer's Certification to: Fayetteville Regional Office
Surface Water Protection
225 Green Street
Systel Building, Suite 714
Fayetteville, NC 28301-5043
r_.
IJ��Vu tj—�l�lLs
Page 6 of 6
o V4104

Permit Number:
(to be provided by DWQ)
Drainage Area Number:
Wet Detention Basin Operation and Maintenance Agreement
I will keep a maintenance record on this BMP. This maintenance record will be kept in a
log in a known set location. Any deficient BMP elements noted in the inspection will be
corrected, repaired or replaced immediately. These deficiencies can affect the integrity
of structures, safety of the public, and the removal efficiency of the BMP.
The wet detention basin system is defined as the wet detention basin,
pretreatment including forebays and the vegetated filter if one is provided.
This system (check one):
❑ does ® does not incorporate a vegetated filter at the outlet.
This system (check one):
❑ does ® does not incorporate pretreatment other than a forebay.
Important maintenance procedures:
— Immediately after the wet detention basin is established, the plants on the
vegetated shelf and perimeter of the basin should be watered twice weekly if
needed, until the plants become established (commonly six weeks).
— No portion of the wet detention pond should be fertilized after the first initial
fertilization that is required to establish the plants on the vegetated shelf.
— Stable groundcover should be maintained in the drainage area to reduce the
sediment load to the wet detention basin.
— If the basin must be drained for an emergency or to perform maintenance, the
flushing of sediment through the emergency drain should be minimized to the
maximum extent practical.
— Once a year, a dam safety expert should inspect the embankment.
After the wet detention pond is established, it should be inspected once a month and
within 24 hours after every storm event greater than 1.0 inches (or 1.5 inches if in a
Coastal County). Records of operation and maintenance should be kept in a known set
location and must be available upon request.
Inspection activities shall be performed as follows. Any problems that are found shall
be repaired immediately.
BMP element:
Potentialproblem:
How I will remediate theproblem:
The entire BMP
Trash/debris is present.
Remove the trash/debris.
The perimeter of the wet
Areas of bare soil and/or
Regrade the soil if necessary to
detention basin
erosive gullies have formed.
remove the gully, and then plant a
ground cover and water until it is
established. Provide lime and a
one-time fertilizer application.
Vegetation is too short or too
Maintain vegetation at a height of
long.
approximately six inches.
Form SW401-Wet Detention Basin O&M-Rev.4 Page 1 of 4

Permit Number:
(to be provided by DWQ)
Drainage Area Number:
BMP element:
Potentialproblem:
How I will remediate theproblem:
The inlet device: pipe or
The pipe is clogged.
Unclog the pipe. Dispose of the
swale
sediment off -site.
The pipe is cracked or
Replace the pipe.
otherwise damaged.
Erosion is occurring in the
Regrade the swale if necessary to
swale.
smooth it over and provide erosion
control devices such as reinforced
turf matting or riprap to avoid
future problems with erosion.
The forebay
Sediment has accumulated to
a depth greater than the
Search for the source of the
sediment and remedy the problem if
original design depth for
possible. Remove the sediment and
sediment storage.
dispose of it in a location where it
will not cause impacts to streams or
the BMP.
Erosion has occurred.
Provide additional erosion
protection such as reinforced turf
matting or riprap if needed to
prevent future erosion problems.
Weeds are present.
Remove the weeds, preferably by
hand. If pesticide is used, wipe it on
the plants rather than spraying.
The vegetated shelf
Best professional practices
Prune according to best professional
show that pruning is needed
practices
to maintain optimal plant
health.
Plants are dead, diseased or
Determine the source of the
dying.
problem: soils, hydrology, disease,
etc. Remedy the problem and
replace plants. Provide a one-time
fertilizer application to establish the
ground cover if a soil test indicates
it is necessary.
Weeds are present.
Remove the weeds, preferably by
hand. If pesticide is used, wipe it on
the plants rather than spraying.
The main treatment area
Sediment has accumulated to
a depth greater than the
original design sediment
Search for the source of the
sediment and remedy the problem if
possible. Remove the sediment and
storage depth.
dispose of it in a location where it
will not cause impacts to streams or
the BMP.
Algal growth covers over
Consult a professional to remove
50% of the area.
and control the algal growth.
Cattails, phragmites or other
Remove the plants by wiping them
invasive plants cover 50% of
with pesticide (do not spray).
the basin surface.
Form SW401-Wet Detention Basin O&M-Rev.4 Page 2 of 4

Permit Number:
(to be provided by DWQ)
Drainage Area Number:
BMP element:
Potential problem:
How I will remediate theproblem:
The embankment
Shrubs have started to grow
Remove shrubs immediately.
on the embankment.
Evidence of muskrat or
Use traps to remove muskrats and
beaver activity is present.
consult a professional to remove
beavers.
A tree has started to grow on
Consult a dam safety specialist to
the embankment.
remove the tree.
An annual inspection by an
Make all needed repairs.
appropriate professional
shows that the embankment
needs repair. if a licable
The outlet device
Clogging has occurred.
Clean out the outlet device. Dispose
of the sediment off -site.
The outlet device is damaged
Repair or replace the outlet device.
The receiving water
Erosion or other signs of
Contact the local NC Division of
damage have occurred at the
Water Quality Regional Office, or
outlet.
the 401 Oversight Unit at 919-733-
1786.
The measuring device used to determine the sediment elevation shall be such
that it will give an accurate depth reading and not readily penetrate into
accumulated sediments.
When the permanent pool depth reads 70 feet in the main pond, the sediment
shall be removed.
When the permanent pool depth reads 4.0 feet in the forebay, the sediment
shall be removed.
Sediment Removal
Bottom
BASIN DIAGRAM
(fill in the blanks)
175
1 I Pe nen
........... * Volume
44 -fMin. edimen�t
Storage
FOREBAY
Permanent Pool Elevation 179.0
Sediment Removal Elevation 172.0 Volur
------------------------------------------- -----
Bottom Elevation
MAIN POND
1-ft
Storage
Form SW401-Wet Detention Basin O&M-Rev.4 Page 3 of 4

Permit Number:
(to be provided by DWQ)
I acknowledge and agree by my signature below that I am responsible for the
performance of the maintenance procedures listed above. I agree to notify DWQ of any
problems with the system or prior to any changes to the system or responsible party.
Project name:BB&T - Erwin NC
BMP drainage area num
Print name:Rhett Bailey
Title:Area Facilities Resource Manager
Address:2101 South Tarboro Street Wilson NC 27893
Note: The legally responsible party should not be a homeowners association unless more than 50% of
the lots have been sold and a resident of the subdivision has been named the president.
I, C Ii Pyl f5 . JC'n n SO ✓) , a Notary Public for the State of
Wy+l7 OwQII oci County of Wyv H-OVIOyC ✓ , do hereby certify that
Qyi e j k A__ 9C61-e:9 personally appeared before me this +�
day of , (Gi Vl UA V i and acknowledge the due execution of the
forgoing wet detention basin maintenance requirements. Witness my hand and official
seal,
SEAL
My commission expires e 13 /2U I I
Form SW401-Wet Detention Basin O&M-Rev.4 Page 4 of 4