SW7020207_CURRENT PERMIT_20020408

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SW 700'10.2�L7
DOC TYPE
� CURRENT PERMIT
❑ APPROVED PLANS
❑ HISTORICAL FILE
DOC DATE
YYYYMMDD

WA -Ea
Michael F. Easley
Governor
William G. Ross Jr., Secretary
Department d Environment and Natural Resources
Gregory J. Thorpe, Ph.D., Acting Director
Division of Water Quality
DIVISION OF WATER QUALITY
April 8,' 2002
HPB Enterprises
Attn: Mr. Elwood Perry
One Plantation Drive
Hertford,.NC 27944.
Subject: Stormwater Permit No. SW7020207
Albemarle Plantation
Commercial Phase
High Density Stormwater Project
Perquimans County
Dear Mr. Perry:,
This office received your completed stormwater application on
April_ 5, 2002. After reviewing your application and supporting
information it has been determined that the project, as proposed,
will comply with the Stormwater Regulations set forth in Title 15A
NCAC 2H.1.000. We are forwarding Permit No. SW7020207 dated April
8, 2002 to HPB Enterprises.
This permit shall be effective from the date of issuance until
April 8, 2012, 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 150E 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.
943 Washington Square Mali Washington, NC 27889 252-946-6481 (Telephone) 252-946-9215 (Fax)

2
HPB Enterprises
April 8, 2002
Page Two
If you have any questions, or need additional information
concerning this matter, please contact Bill Moore at (252) 946-
6481, extension 264.
Sincerely,
Jim Mulligan
Water Quality Regional Supervisor
Washington Regional Office
cc: Bissell Professional Group
Pe5Ruimans County Inspections
,Washington Regional Office
Central Files

State Stormwater Management Systems
Remit- No. SW7020207
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF TER 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
HPB Enterprises
Perquimans County
FOR THE
construction, operation and maintenance of stormwater management
systems in compliance with the provisions of 15A NCAC 2H.1000
(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 for a wet
detention pond to serve Albemarle Plantation, Commercial Phase
located near Hertford, NC.
This permit shall be effective from the date of issuance until
April 8, 2012, 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 on page 4 of this permit, the
Project Data Sheet.
3. Approved plans and specifications for this project are
incorporated by reference and are enforceable parts of the
permit.
3

0
DIVISION OF WATER QUALITY
PROJECT DATA
Project Name:
Permit Number:
Location:
Applicant: -
Mailing Address:
Application Date:
Water Body Receiving Stormwater
Runoff:
Classification of Water Body:
Total Site Area:
Total Impervious
Surfaces Allowed:
Pond/Basin Depth:
Required Surface Area
(SA/DA) :
Provided Surface Area:
Required Storage Volume:
(based on 1.0-inch)
Provided Storage Volume:
Controlling Orifice:
4
Albemarle Plantation
Commercial Phase
SW7020207
Perquimans County
HPB Enterprises
One Plantation Drive,
Hertford, NC 27944
02/01/2002; original
04/05/2002; complete
Minzes Creek
SC
12.73 acres
8.49 acres
4.0 ft
22,735 sf
25,825 sf
30,049 cf.
30,350 cf
2.0 -- inch diameter

4. No homeowner/lot owner/developer shall be allowed to fill in,
alter, or pipe any vegetative practices (such as swales) shown
on the approved plans as part of the stormwater management
system without submitting a revision to the permit and
receiving approval from the Division.
5. The following items will require a modification to the permit:
a.
Any revision to the
approved plans,
regardless of size
b.
Project name change
C.
Change of ownership
d.
Redesign or addition
to the approved
amount of built --upon
area
e.
Further subdivision
of the project
area.
In
addition, the Director
may determine
that other revisions
to
the project should require
a modification
to the permit.
6. 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.
II. SCHEDULE OF COMPLIANCE
1. The permittee will comply with the following schedule .for
construction and maintenance of the stormwater management
system.
a. 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 surfaces
except roads.
b. During construction, erosion shall be kept to a minimum
and any eroded areas of the system will be repaired
immediately.
2. The facilities must be properly maintained and operated at all
times. The approved Operation and Maintenance Plan must be
followed in its entirety and maintenance must occur at the
scheduled intervals.
3. The permittee shall at all times provide the operation and
maintenance necessary to assure the permitted stormwater
system .functions at optimum efficiency including, but not
limited to:
5

a. Semi --annual scheduled inspections (every 6 months)
b. Sediment removal
C. Mowing and revegetation of side slopes
d. Immediate repair of eroded areas
e. 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.
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. - 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.
6. upon completion of construction 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 accordµnce=w
this permit, the approved plans and specifications, and other
supporting documentation. Mail the Certification to the
Washington Regional Office, 943 Washington Square Mall,
Washington, North Carolina, 27889, attention Division of Water
Quality.
7. A copy of the approved plans and specifications shall be
maintained on file by the Permittee Jor a minimum of five
years from the date of the completion of construction.
III. GENERAL CONDITIONS
1. This permit is not transferable. In the event there is a
desire for the facilities .to change ownership, or there is a
name change of the Permittee, a formal permit request must be
submitted to the Division of Water Quality accompanied by an
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.
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 143-215.6(a) -to 143-215.E(c).
6

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) which have 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 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.
Permit issued this the 8 th day of April, 2002.
_ NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COM41SSION
X Grego'ry J. Thorpe, Ph.D., Acting Director
Division of Water Quality
By Authority of the Environmental Management Commission
Permit Number SW7020207
7

Stormwater Permit No. SW7020207
Wet Detention Pond System
Albemarle Plantation Commercial Phase
Hertford, NC
Designer's Certification
I,
as a duly
registered Professional Engineer in the State of North Carolina,
having been authorized to observe (periodically/weekly/full time)
the construction of the project,
for
(Project)
(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.
Signature
Registration Number
Date
E

vv-�5' P-A�
OFFICE USE'ONLY
Fee Paidermit Number
State of North Carolina
FEB �QQ� Department of Environment and Natural Resources
Division of Water Quality Phone
DMAWR�I4�WATER MANAGEMENT PERMIT APPLICATION FORM 3%L
This form may he photocopied for use as an original a.�� W"ll -cca
I. GENERAL INFORMATION 10tsr
1. Applicants name (specify the name of the corporation, individual, etc. who owns the project): I _
HPB Enterprises G
5 t,`l ? a y
2, Print Owner/Signing Official's name and title (person legally responsible for facility and compliance): r'Gc✓` lt��jl99
Mr. Elwood Perry
3. Mailing Address for person listed in item 2 above: ! <
Onle Plantation Dr. ?rlor� 7f Y�
City Hertford State NC Zip; 27944�
Telephone Number: ( 252) 426-4653 Lin Cc4,,
4. Project Name (subdivision, facility, or establishment name -should be consistent with project name on plans.
specifications, letters, operation and maintenance agreements, etc.):
Albemarle Plantation Commercial Phase
5. Location of Project (street address):
across from the intersection of SR 1429 R SR 1347
City Hertford County: Perquimans
6. Directions to project (from nearest major intersection):
7. Latil 360 05' 00" Longitude: 760 19.0011 of project
8. Contact person who can answer questions about the project:
Nan- Mr. Elwood Perry Telephone Number: [phone]
11. PERMIT INFORMATION:
1. Specify whether project is(check one): New Renewal X Modification
Form SNVU-101 Version 3.99 Page I of 4

2. 1 f this application is being submitted as a result of a renewal or modification to an existing permit, list the
existing permit number SW7990422 and its issue date (if known)
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/E.rosion Control 404/401 Permit NPDES Storm
Information on required state permit can be obtained by contacting the Customer Service Center at
1-877-623-6748
111. 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 runoff from all impervious surfaces will flow overland into vegetative filters
that will convey flow, throu h a velocit dissa ater, into the wet detention basin
2. Stormwater runoff from this project drains to the Minzes Creek/ Albemarle Sound River basin.
3. Total Project Area: 146.93 acres 4. Project Built Upon Area: 55.10%
5. How many drainage areas does the project have? 2 R. .?1 :' `S ¢�
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 formal as below.
Basin Information
Drainage Area 1
Drainage Area 2
Receiving Stream Name
Minzes Creek
Minzes Creek
Receiving Stream Class
Sc
Sc
Drainage Area
6.95 ac.
5.78 ac.
Existing Impervious* Area
0
0
Proposed Impervious* Area
3.41 ac.
1.25 ac.
Impervious* Area (total)
49.08%
85.05%
lmpervious* Surface Area
Drainage Area 1
Drainage Area 2
Future On -Site Buildings
42691 sf or .99 ac.
14,400 or 33 ac.
On -Site Streets
88347 sf or 2.03 ac.
14,760 sf or .34 ac.
On -Site Parking
included above
included above
Other On -Site (gravel drives/area)
17,538 sf or .40 ac.
184,985 sf or 4.25 ac.
Off -Site
0
0
Impervious* Area (total)
148,576 sf or 3.41 ac.
214,145 sf or 4.92 ac.
1 Z.?3 ✓
*%mpervlous area is defined as the built upon area including, but not limited to, buildings, roads, parking areas,
sidewalks, gravel areas, etc. (See associated calculations for a detailed description of the proposed impervious areas)
Form SWU-101 Version 3.99 Page 2 oi'4

7. Mow was the off -site impervious area listed above derived? NIA
IV. DEED RESTRICTIONS AND PROTECTIVE COVENANTS
The following italicized deed restrictoins 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 storntwater management permit
number as issued by the Division of R ater Quality. These covenant.
may not be changed or dolled without consent of the State.
2. No more than square feet of any lot shall be covered by structures dr impervious materials.
Impervious materials include asphalt, gravel, concrete, brick, stone, slate or similar material but do not include
wood decking or the water surface of.swinnning pools,
3. Sivales shall not be filled in, piped, or altered except as necessray to provide driveway crossings.
4. Built -upon area in excess of the permitted amount requires a stale storinwate• management permit modification
prior to construction.
.i. All permitted runofffrom outparcels or future development shall be directed into the permitted storinwaler control
system. These connections to the stornix,ater eonfrol system shall be perforated in a manner that maintains the
integritY and performance 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
Wet Detention Basin Supplement
Form SWU-103
Infiltration Basin Supplement
Form SWU-104
Low Density Supplement
Form SWU-105
Curb Outlet System Supplement
Form SWU-106
Off -Site System Supplement
Form SWU-107
Underground Infiltration Trench Supplement
Form SWU-108
Neuse River Basin Supplement
Form SWU-109
Innovative Best Management Practice Supplement
Form SWU-101 Version 3.99 Page 3 of4

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 Regional Office.
1. Please indicate that you have provided the following required information by initaling in the space provided
next to each item.
Initials
• Original and one copy of the Storrnwater Management Permit Application form DMR
• One copy of the applicable Supplement Form(s) for each BMP DMR
• Permit application processing fee of $420 (payable to NCDENR) pMR
• Detailed narrative description of stormwater treatment/management DMR
• Two copies of plans and specifications, includin;: DMR
- Development/Project Name
- Engineering and firm
- Legend
- North arrow
Scale
Revision number R 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)
VI I. AGENT AUTHORIZATION
If you wish to desginate authority to another individual or firm so that they may provide information on your
behalf, please complete this section.
Designated agent (individual or firm):
Mailing Address:
City
Phone:
VIII APPLICANT'S CERTIFICATION
State:
Zip
Fax:
1, (print or type name of person listed in General Information, item 2) Mr. Elwood Perry
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 requuirements of 15A
NCAC 21-1 .1000,
Signature:
Date: L.!_—�� Z
Form SWU-104 Version 3.99 Page 4 of

POSItal Service"
ui
m '' •,Jy PT
HEROR#7�7� (I �• L
i Certified Mall Fee . 31j
t $ 0389
Q' Ex" Services & ees (check Da; add ha
0 ❑ Rgtum Receipt lloWcmml.
❑ Fi9111m Receipt ieketronlcJ S
0 ❑ C.". Mall Re kigd D-Wy
O ❑—it Signeturo Requhd S � ,S 1 i 11
❑ � S1pmRea Resft- D-M $
• t
p Postage -�`� !. 25 r ,
a #0.47
Totel ppsfage and Fees tli i.Er /
$ $6.47
MR. GRAHAM WHITE w
© s`U ALBEMARLE PLANTATION POA, INC.
r; 128 LAKESIDE DRIVE ---
HERTFORD NC 27944
■ Complete items , and .
■ Print your name a42address on the reverse
so that we can return the card to you.
■ Attach this card to the back of the mailpiecf
or on the front if space permits. R
1. Article Addressed to:
MR. GRAHAM WHITE
ALBEMARLE PLANTATION POA, INC.
128 LAKESIDE DRIVE
HERTFORD NC 27944
_l���Illillglll�llllllMlll��1l IIlIII11II�1111�II
9590 9401 0100 5168 9437 23
- --•--�---rr ..s—J..,.... Dann.-n I. huh
`7015 0640 0005 9080 5835j.
PS Form 3811, April 2015 PSN 7530-02-000-9053
A. Signature t
X ❑ Agent
❑ Addressee I
B. Re eived by Printer! Name} C. Date of Delivery I
D. Is delivery address different from item 17 ❑ Yes
If YES, enter delivery address below: ❑ No
3. Service Type
❑ Priority Mail Express® j
O Adult Signature
❑ Registered Mall-
0 Adult Signature Restricted Delivery
❑ Registered Mail Restricted
R* ertliied Mail®
Delivery
Cl Certified Mail Restricted Delivery
❑ Return Receipt for
❑ Collect on Delivery
Merchandise
n Collect on Delivery Restricted Delivery
❑ Signature Confirmation'"
❑ Insured Mail
❑ Signature Confirmation
❑ Insured Mall Restricted Delivery
Restricted Delivery
Domestic Return Receipt

Energy. Mineral
and Land Resources
ENVIRONMENTAL OVAUTY
CERTIFIED MAIL
RETURN RECEIPT REQUESTED
7015 0640 0005 9080 5835
April 26, 2016
Mr. Graham White
Albemarle Plantation Properties Owners As_$ociation, Inc.
128 Lakeside Drive
Hertford, NC 27944
Dear Mr. White:
WRO
PAT MCCRORY
Governor
DONALD R. VAN DER VAART
.Secretary
TRACY DAVIS
Subject: Stormwater Permit Renewal
Stormwater Management Permit SW7020207
Albemarle Plantation Commercial Phase
Perquimans County
Director
On August 3, 2015 1 sent you the attached letter advising you that Stormwater permit
SW7010823 was up for renewal. To this date we have not received a response. The
permit has now expired and you are now operating without a valid permit. Operation of
a stormwater treatment facility without a valid permit is a violation of NC General Statute
143-215.1 and may result in an appropriate enforcement action including assessment of
civil penalties.
Please submit a completed renewal application along with a processing fee of $505.00
within 30 days. The permit renewal application forms can be found on our website at
http://deq.nc.gov/about/divisions/energy-mineral-land-resources/energy-mineral-land-
permits/stormwater-permits/forms. if you have questions, I will be glad to discuss this
with you by phone or meet with you in person. You can reach me at [phone].
Enclosure
Sincerely,
Roger K. Thorpe
Environmental Engineer
Washington Regional Office
State or North Carolina I Environmental Quality I Energy, Mineral and Land Resources
943 Washington Square Mall. I Washington, NC 27889
252-946.6481 T

Pat McCrory
Governor
&*A.
NCDENR
North Carolina Department of Environment and Natural Resources
August 3, 2015
Mr. Graham White
Albemarle Plantation Property Owners Association, Inc.
128 lakeside Drive
Hertford, NC 27944
Dear Mr. White:
Don Van der Vaaa
Secretary
Subject: Stormwater Permit Renewal & Ownership Change
Stormwater Management Permit SW7020207
Albemarle Plantation Commercial Phase
Perquimans County
A Division of Energy, Mineral, and Land Resources file review has determined that Stormwater Permit
SW7020207 for a wet detention pond serving the Albemarle Plantation Commercial Phase (Boat Parking
Area) in Perquimans County expires on April 8, 2016. Renewal applications are due 180 days prior to
expiration. A search of the Pasquotank County tax records shows that the property covered under this
permit is now owned by the Albemarle Plantation Property Owners Association, Inc. North Carolina General
Statutes and the Coastal Stormwater rules require that this property be covered under a stormwater permit.
Please submit a completed permit renewal application along with a $505.00 fee for permit renewal and an
ownership change application. Permit application forms for renewal and ownership change can be found on
our website at http:llportal,ncdenr.org/web/Ir/state-stormwater-forms does .
North Carolina General Statutes and the Coastal Stormwater rules require that this property be covered
under a stormwater permit. Failure to maintain a permit subjects the owner to assessment of civil penalties.
If you have questions, please feel free to contact me at [phone]. i will be glad to discuss this by
phone or meet with you.'
Sincerely,
Roger K. Thorpe
Environmental Engineer
Division of Energy, Mineral, and land Resources . Land Quality Section
Washington Regional Office
943 Washington Square Mall, Washington, North Carolina 27889 • Phone: [phone] FAX, 252-975-3716
Internet: http://pgrtal.ncdenr.oroMebAr/land-quality
An Equal Opportunity 1 Affirmative Action Employer— 50% Recycled 110% Post Consumer Paper

Permit No.
' (to be provided b�' DWQ)
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORE-CEIV ED
r
WET DETENTION BASIN SUPPLEMENT FEB = T 2002
This form may be photocopied for use as an original
DWO _Stormwater Management Plan Review:
owQ.wARo
A complete stormwater management plan submittal includes an application form, a wet detention basin
supplement for each basin, design calculations, and plans and specifications showing all basin and outlet
structure details.
I. PROJECT INFORMATION
Project Name: /`1L��'/-tAV_JE R_A/VT_ATi0AJ COA-4mu-eCIA,L, FH�°tsa
Contact Person: Me - EL a1MC�, Phone Number: ( 252) 4Zj�- 4655
For projects with multiple basins, specify which basin this worksheet applies to: I
elevations
Basin Bottom Elevation
f
° M51
ft.
Permanent Pool Elevation
10 ° Msr_
ft.
Temporary Pool Elevation
l 1 ° '` GL
ft.
areas
Permanent Pool Surface Area '25,825
sq, ft.
Drainage Area
1 Z--73
ac.
Impervious Area
8.4cl
ac.
volumes
Permanent Pool Volume S(��202 cu. ft.
Temporary Pool Volume 309 557 . cu. ft.
Forebay Volume i Z,S 22 cu. ft.
Other parameters
SAIDA1
"` Diameter •of Orifice
Design Rainfall
4,r Design TSS Removal ?
Form SWU-lot Rev 3.99
(floor of the basin)
(elevation of the orifice)
(elevation of the discharge structure overflow)
(water surface area at the orifice elevation)
(on -site and off -site drainage to the basin)
(on -site and off -site drainage to -the basin)
(combined volume of main basin and forebay)
(volume detained above the permanent pool)
(approximately 20% of total volume) owl S /is OK
3A (surface area to drainage area ratio from DWQ table)
2 a in: (2 to 5 day temporary pool. draw -down. required)
85 %„ (minimum 85% required)
Page 1 of 4

Footnotes:
t When using the Division SA/DA tables, the correct SA/DA ratio for permanent pool sizing should be computed based upon the
actual impervious % and permanent pool depth. Linear interpolation should be employed to determine the correct value for non-
standard table entries. `` }
2 In the 20 coastal counties, the requirement for a vegetative filter may be waived if the wet detention basin is designed to provide
90% TSS removal. The NCDENR BMP manual provides design tables for both 85% TSS removal and 90% TSS removal.
II. REQUIRED ITEMS CHECKLIST
The following checklist outlines design requirements per the Stormwater Best Management Practices Manual
(N.C. Department of Environment, Health and Natural Resources, February 1999) and Administrative Code
Section: 15 A NCAC 2H .1008.
Initial in the space provided to indicate the following design requirements have been met and supporting
documentation is attached. If the applicant has designated an agent in the Stormwater Management Permit
Application Form, the agent may initial below. If a requirement has not been met, attach justification.
Applicants Initials
a.
b.
The permanent pool depth is between 3 and 6 feet (required minimum of 3 feet).
The, forebay volume is approximately equal to 20% of the basin volume.
The temporary pool controls runoff from the design storm event.
d. The temporary pool draws down in 2 to 5 days.
e. If required, a 30-foot vegetative filter is provided at the outfet (include non -erosive flow
calculations)
f. The basin length to width ratio is greater than 3:1.
g. The basin side slopes above the permanent pool are no steeper than 3:1.
h. A submerged and vegetated perimeter shelf with a slope of 6:1 or less (show detail).
i. Vegetative cover above the permanent pool elevation is specified.
A trash rack or similar device is provided for both the overflow and orifice.
CUP k. A recorded drainage easement is provided for each basin including access to nearest right-
of-way.
P 1. if the basin is used for sediment and erosion control during construction, clean out of the
basin is specified prior to use as a wet detention basin.
P m. A mechanism is specified which will drain the basin for maintenance or an emergency.
III. WET DETENTION BASIN OPERATION AND MAINTENANCE AGREEMENT
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) 0 does 0 does not incorporate a vegetated filter at the outlet.
This system (check one) 0 does 0 does not incorporate pretreatment other than a forebay.
Form S W U-102 Rev 3.99 Pace 2 of 4 _

Maintenance activities shall be performed as follows:
)1. After every significant runoff producing rainfall event and at least monthly:
a. Inspect the wet detention basin system for sediment accumulation, erosion, trash accumulation,
vegetated cover, and general condition.
b. Check and clear the orifice of any obstructions such that drawdown of the temporary pool occurs
within 2 to 5 days as designed.
2. Repair eroded areas immediately, re -seed as necessary to maintain good vegetative cover, mow vegetative
cover to maintain a maximum height of six inches, and remove trash as needed.
3. Inspect and repair the collection system (i.e. catch basins, piping, swales, riprap, etc.) quarterly to
maintain proper functioning.
4. Remove accumulated sediment from the wet detention basin system semi-annually or when depth is
reduced to 75% of the original design depth (see diagram below). Removed sediment shall be disposed
of in an appropriate manner and shall be handled in a manner that will not adversely impact water quality
(i.e. stockpiling near a wet detention basin or stream, etc.).
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 7. ° ' feet in the main pond, the sediment shall be removed.
When the permanent pool depth reads 8'0` feet in the forebay, the sediment shall be removed.
BASIN DIAGRAM
(fill in the blanks)
V. Permanent Pool Elevation i0 a
Sediment R\Ele
al El. g'a 75
-------------i
-Sediment Removal Elevation 75%
Bottomation 7-a q6---------------------------------`-----------125%
------
Bottom Elevation 6 o /
FOREBAY
MAIN POND
5. Remove cattails and other indigenous wetland plants when they cover 50% of the basin surface. These
plants shall be encouraged to grow along the vegetated shelf and forebay berm.
`; 6. if the basin must be drained for an emergency or to perform maintenance, the flushing of sediment
through the emergency drain shall be minimized to the maximum extent practical.
Form SWU-102 Rev 3.99
Page 3 of 4

M
m
7. All components of the wet detention basin system shall be maintained in good working order.
I acknowledge and agree by my signature below that I am responsible for the performance of the seven
maintenance procedures listed above. I agree to notify DWQ of any problems with the system or prior to an}
changes to the system or responsible party.
Print name: L d H n J-
Title:a .�
Address: -ZS'2,:s" e-� 'Y-'4J, t -L— L)a. ,L-3 /CX-
Phon
Sign
Date
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, , a Notary Public for the State of ,
County of , do hereby certify that
personally appeared before me this day of , and acknowledge the due
execution of the forgoing wet detention basin maintenance requirements. Witness my hand and official seal,
SEAL
My commission expires
Form SWU-102 Rev 3.99 face 4 of 4