SW7070212_CURRENT PERMIT_20070301

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

-M
Michael F. Easley, Governor
William G. Ross Jr., Secretary
r
North Carolina Department of Environment and Natural Resources
1
-(
Alan W. Klimek, P.E. Director
Division of Water Quality
March 1, 2007
Mr. Don S. Williams, Sr., Owner
307 N. Currituck Rd.
Currituck, NC 27929
Subject: Stormwater Permit No. SW7070212
Savin Woods
High Density Subdivision Project
Pasquotank County
Dear Mr. Williams:
The Washington Regional Office received a complete Stormwater Management Permit
Application for Savin Woods on February 12, 2007. 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. SW7070212, dated March 1,
2007, for the construction of the subject project.
This permit shall be effective from the date of issuance until March 1, 2017, 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.
If you have any questions, or need additional information concerning this matter, please contact
Scott Vinson, or me at [phone].
incere ,
'-A Hodge
Regional Supervisor
Surface Water Protection Section
AH/sav: C:\STORMWATER\PERMIT\SW7070212
cc: Sean Robey, PE
Pascuotank County Building Inspections
,1"%Aashlngton Regional Office
Centralwiles N aturaly
Naturally
North Carolina Division of Water Quality Washington Regional Office Phone [phone] FAX [phone] Customer Service
Internet: www. ncwateraualitv.ore 943 Washington Square Mall, Washington, NC 27889 1.877-623.6748
An Equal Opportunity/Affirmative Action Employer— 50% Recycled/l0% Post Consumer Paper

State Stormwater Management Systems
Permit No. SW7070212
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
Don S. Williams, Sr.
Savin Woods
Pasquotank County
FOR THE
construction, operation and maintenance of a wet detention basin 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.
This permit shall be effective from the date of issuance until March 1, 2017 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.
2. 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 controls have been designed
to handle the runoff from 7.39 acres of impervious area. The subdivision is permitted for 45
lots each having 5,500 square feet of built -upon area each.
3. Approved plans and specifications for this project are incorporated by reference and are
enforceable parts of the permit.
4. The tract will be limited to the amount of built -upon area indicated on page 3 of this permit, and
per approved plans.
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.
Page 2 of 8

State Stormwater Management Systems
Permit No. SW7070212
The following design elements have been permitted for this wet detention pond stormwater
facility, and must be provided in the system at all times.
a. Drainage Area, acres:
b. Total Impervious Surfaces, ac:
C. Pond Depth, feet:
d. TSS removal efficiency:
e. Design Storm:
f. Permanent Pool Elevation, FMSL:
g. Permitted Surface Area @PP, ftZ:
h. Permitted Storage Volume, ft3:
i. Storage Elevation, FMSL:
j. Controlling Orifice:
k. Permanent Pool Volume, ft3:
I. Forebay Volume, ft3:
m. Receiving Stream / River Basin:
n. Stream Index Number:
o. Classification of Water Body:
II. SCHEDULE OF COMPLIANCE
14.12
7.39
4.00
90%
1"
3.00
30,019
33,325
4.06
3.00"0 pipe
79,849
15.104
Knobbs Creek / Pasquotank
30-3-8
"C; Sw"
1. No homeowner/lot owner/developer shall fill in, alter, or pipe any drainage feature (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.
2. The permittee is responsible for verifying that the proposed built -upon area for the entire lot,
including driveways and sidewalks, does not exceed the allowable built -upon area. Once the
lot transfer is complete, the built -upon area may not be revised without approval from the
Division of Water Quality, and responsibility for meeting the built -upon area limit is transferred
to the individual property owner.
3. If an Architectural Review Board or Committee is required to review plans for compliance with
the BUA limit, the plans reviewed must include all proposed built -upon area. Any approvals
given by the Board do not relieve the homeowner of the responsibility to maintain compliance
with the permitted BUA limit.
4. 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 the approved plans, regardless of size.
b. Project name change.
Page 3 of 8

State Stormwater Management Systems
Permit No. SW7070212
C. Transfer of ownership..
d. Redesign or addition to the approved amount of built -upon area.
e. Further subdivision, acquisition, 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.
5. 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.
7. 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.
8. During construction, erosion shall be kept to a minimum and any eroded areas of the system
will be repaired immediately.
9. 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.
10. 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.
11. Permanent seeding requirements for the stormwater control must follow the guidelines
established in the North Carolina Erosion and Sediment Control Planning and Design Manual.
12. Prior to the sale of any lot, the following deed restrictions must be recorded:
a. The following covenants are intended to ensure ongoing compliance with State
Stormwater Management Permit Number SW7070212, as issued by the Division of
Water Quality under 15A NCAC 2H.1000.
b. The State of North Carolina is made a beneficiary of these covenants to the extent
necessary to maintain compliance with the Stormwater Management Permit.
C. These covenants are to run with the land and be binding on all persons and parties
claiming under them..
d. The covenants pertaining to stormwater may not be altered or rescinded without the
express written consent of the State of North Carolina, Division of Water Quality.
e. Alteration of the drainage as shown on the approved plans may not take place without
the concurrence of the Division of Water Quality.
f. The maximum built -upon area per lot is 5,500 square feet. This allotted amount
includes any built -upon area constructed within the lot property boundaries, and that
portion of the right-of-way between the front lot line and the edge of the pavement. Built
upon area includes, but is not limited to, structures, asphalt, concrete, gravel, brick,
stone, slate, coquina and parking areas, but does not include raised, open wood
decking, or the water surface of swimming pools.
g. Lots within CAMA's Area of Environmental Concern may be subject to a reduction in
their allowable built -upon area due to CAMA regulations.
Page 4 of 8

State Stormwater Management Systems
Permit No. SW7070212
All runoff on the lot must drain into the permitted system. This may be accomplished
through providing roof drain gutters, which drain to the street, grading the lot to drain
toward the street, or grading perimeter swales and directing them into the pond or
street. Lots that will naturally drain into the system are not required to provide these
measures.
Built -upon area in excess of the permitted amount will require a permit modification.
13. A copy of the recorded deed restrictions must be submitted to the Division within 30
days of the date of recording the plat, and prior to selling lots. The recorded copy must
contain all of the statements above, the signature of the Permittee, the deed book
number and page, and the stamp/signature of the Register of Deeds.
14. Prior to transfer of the permit, the stormwater facilities will be inspected by DWQ personnel.
The facility must be in compliance with all permit conditions. Any items not in compliance must
be repaired or replaced to design condition prior to the transfer. Records of maintenance
activities performed to date will be required.
15. The permittee shall at all times provide the operation and maintenance necessary to assure
that all components of the permitted stormwater system function 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 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 structures, orifice, catch basins and piping.
g. Access to all components of the system must be available at all times.
16. 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.
17. 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.
18. Built upon area includes, but is not limited to, structures, asphalt, concrete, gravel, brick, stone,
slate, coquina and parking areas, but does not include raised, open wood decking, or the water
surface of swimming pools.
19. Decorative spray fountains will be allowed in the stormwater treatment systems, 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 be
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 the fountain's pump is based on the permanent pool
volume. The maximum pump power for a fountain in either wet pond is 0.25hp.
20. This permit shall be effective from the date of issuance until March 1, 2017. Application for
permit renewal shall be submitted 180 days prior to the expiration date of this permit and must
be accompanied by the processing fee.
Page 5 of 8

State Stormwater Management Systems
Permit No. SW7070212
III. GENERAL CONDITIONS
This permit is not transferable to any person or entity except after notice to and approval by the
Director. In the event there is either a desire for the facilities to change ownership, or there is
a name change of the Permittee, a "Name/Ownership Change Form" must be submitted to the
Division of Water Quality accompanied by appropriate documentation from the parties
involved. This may include, but is not limited to, a deed of trust, recorded deed restrictions,
Designer's Certification and'a signed Operation and Maintenance plan. The project must be in
good standing with DWQ. The approval of this request will be considered on its merits and
may or may not be approved.
2. The permittee is responsible for compliance with all of the terms and conditions of this permit
until such time as the Director approves the transfer request.
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.
4. 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.
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 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. Permittee grants permission to staff of the DWQ to access the property for the purposes of
inspecting the stormwater facilities during normal business hours.
8. The permittee shall notify the Division of any name, ownership or mailing address changes
within 30 days.
9. 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.
Permit issued this the 1st day of March, 2007.
NA ENVIRONMENTAL MANAGEMENT COMMISSION
1 ,-� QL1�- for
Alan VV. Klimek, P.., Director
Division of Water Quality
By Authority of the Environmental Management Commission
Permit Number SW7070212
Page 6 of 8

State Stormwater Management Systems
Permit No. SW7070212
Savin Woods
Stormwater Permit No. SW7070212
Pasquotank County
Designer's Certification
Page 1 of 2
I, , as a duly registered in the State of
North Carolina, having been authorized to observe (periodically/weekly/full time) the construction of
the project,
(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 are a part of this Certification.
Noted deviations from approved plans and specifications:
Signature
Registration Number
Date
SEAL
Page 7 of 8

State Stormwater Management Systems "
Permit No. SW7070212
Certification Requirements: Page 2 of 2
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, a forebay, and
the vegetated filter.
15. The required dimensions of the system are provided, per the approved plan.
cc: NCDENR-DWQ Regional Office
Pasquotank County Building Inspections
Page 8 of 8

-- OFFICE Tj S-E 5N1,Y — -- -
Dale Received I7ce Paid Permit Number
/f i1`1 - !t-non OR 12
Stale of Noah Carolina 6VJACK a/f167
_ Department of Environment and Natural Resources
RcmueF.® Division of Water Quality
FEB � 2007 STORMWATER MANAGEMENT PERMITAPPLICATION FORM
�
This Cann may he photocopied foruse as an original
®WO -WARD
I. GENERAL INFORMATION
1. Applicants name (specify the name of (lie corporation, individual, ctc. who owns the project):
Don S. Williams, Sr.
2. Print Owner/Signing Official's name and title (I)CI legally responsible for facility and compliance):
Don S. Williams, Sr. Owner
3. Mailing Address fur person listed in item 2 above:
307 N. Currituc_k Road
City: Currituck State: NC Zip:_27929
Telephone Number: _( 252_) 202-1497
4. Project Name (subdivisiou, facility, or establi5llme111, nauiu - should be consistent with project name on plans.
Specifications, letters, operation and maintenance agreements, etc.):
Savin Woods
5. Location of Project (street address):
End of SR 1147 (Savin Road) on North side
City: Elizabeth City Comity: Pasquotank
6. Directions to project (from nearest major intersection):
US 17 to Oak Stump Road, left on chappell Gardens Drive, left on
Savin Road, project at,end on left.
7. Latitude: 360 17 ' Longitude: 750 15 ' of project
8. Contact person who can answer questions about the project
Name: Kimberly D. Hamby Telephone Number: ( 252) 335-1888
11. PERMITINEORMATION:
1. Specify whether project is (check one): XXX New Renewal Modification
Form SWU-101 Version 3.99. Inge I ef4

i
2. If this application is being submitted as the result of a renewal or modification to an existing permit, list Idic
existing permit number and its issue date (if known)
ISpellcily the type of project (check one):
Low Density X High Density Reclevelop _General Permit Oihcr
i
4. Additional Project Requirements (check applicable blanks):
_CAMA Major X Sedimentation/Erosion Control _404/401 Permit _NPDES Slormwatler
Information on required state permits can be obtained by contacting the Customer Service Center at
1-8 7-623-6748.
i
I
III. PROJECT INFORMATION
1. In the space provided below, summarize how stormwater will be treated. Also attach a detailed narrative
(on� to two pages) describinng stonwatel management for the project . In Drainage Area 1 I stormwate
will sheet flow across grassed yards into rear lot line ditches and piped down si
lot lines-rnttu--an--und uiit yards-wi-1-Yshett-flowjacross th
yard and the cucb_intn the c.ur-ba __nd_-g.utter-_sm te—_-S-torwD mater._in rainage
Area 2 willlecontinue to sheet flow to the existing wetlands,
2. Stormwaler runoff from this project drains to the Pasquotahk River basin
3. 'Io[at Project Area: 19.52 acres 4. Project Built Upon Area: 37.86 %
5. How many drainage areas does the project have? 2
6. Conl plete the following information for each drainage area. If there are more than two drainage areas iri the
project, attach an additional sheet with the information for each area provided in the same format as below.
Basin Information
Drainage Area 1
Drainage Area 2
Receiving Stream Name
Creek
Knobbs Creek
Receiving Stream Class
CSW
CSW IF
Drainage Area
1.4 . 1 2 AC
5.4 AC
Existing IImpervious ' Area
0
0
Proposed Impervious*Area
7.39 AC
0
%Impervious�Area(total)
52.34%
0 j
bnpervi�
use Surface Area
Drainage Area 1
Drainage Area 2
On -site
Buildings
On -site
❑'eets
59 800SF 1 .37 AC
0
On -site
Parking
0
0
On-siteyidewalks
(14 997SF) .34 AC
0
Otheroli-sile(45lots@5
OOSF) 5.68 AC
0 j
Off -site
Total: 7.39 AC
Total: O
Impervious area is defined as (be built upon area including, but riot limi(ed to, buildings, roads, parking areas,
sidewalks, gravel areas, etc.
Form SWU-101 Version 3.99 Page 2 of 4

7. Flow was the off -site hnpervious area listed above d
IV. DEED RESTRICTIONS AND PROTECTIVE COVENANTS
The following italicized deed restrictions and protective covenants are required to be recorded for all
subdivisions, out parcels and ILture development prior to the sale of any lot. 11 lot sizes vary significantly, a table
listing each lot number, size and life allowable built -upon area for each lot must be provided as an attachment.
1. The following c'overmr(s arc intended to ensure ongoing compliance with state slor'mnv✓ater management permit number
707 T:f l as issued by the Division of Water Quality. These covenants may no( be
changed or deleted without the consent of the Slate.
2. No more than 5 r 5 0 0 square fee( of any lot shall be covered by structures or impervious malerials.
Miller vious materials include asphalt, gravel, concrete, br'iclr, .Stone, slate or similar material but do flat include rood
decking of lire walersmi'ace of swimming pools.
3. Swales shall flat be filled hi, piped, or altered escopt as occessaly to pnrvide driveway crossings.
4. Built -upon area in excess of (be permitted amount requires a state stornrwater management permit modification prior (o
construction.
5. All permitted runoff from outparcels or future development shall be directed into tine permitted stornrwater control
sysfeu. Tlrese connections to lire slornnvater control syslcnn shall be perfor'rned in a manner that maintains file integrity
and performance of (he systems 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 lire required covenants cannot be changed or delcled
without concurrence from the State, and that they will be recorded prior to the sale of any lot.
V. SUPPLEMEN'r mRMs
The applicable state stornrwater management permit supplement for nr(s) listed below must be submitted for each
BMP specified for this project. Contact the Stormwaler and General Permits Unit al [phone] for the status
and availability of these fornis.
Form SWU-102
Wet Detention Basin Supplement
For SWU-103
lufilueliun Basin Supplement
For SWU-104
Low Density Supplcmcnt
For SWU-105
Curl) Outlet System Supplcmcnt
For SWU-lac
Off -Ste System Supplement
Fenn SWU-107
Underground Infiltratlon'I'rench Supplcmcnt
Form SWU-108
Neese River Basin Supplement
For SWU-109
Innovative Best Mauagenrcnl Practice Suppicuicul
Form SWU-101 Version 3.99 Page 3 of4

VI. SUBMITTAL REQUIREMENT'S
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
1. Please indicate that you have provided the following required information by initialing in tide space provided
next to each item.
Original and one copy of the Storrnwater Management Permit Application Form
• One copy of the applicable Supplement Form(s) for each BMP
• Permit application processing fee of $420 (payable to NCDENR)
• Detailed narrative description of stormwater treatnenl/management
Two copies of plans and specifications, including:
- 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 nurnbers
- 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 AUTFIORIZATION
If you wish to designate authority to another individual or firm so that they may provide information on your I
behalf, please complete this section.
Designated agent (individual or firin)
Mailing Address:_
City: Camden
Phone: ( 252 ) 335-1888
Vlll. APPLICANT'S CERTIFICATION
yman & Robey PC
State: NC Zip: 27921
Fax: ( 252 j 338-5552
I, (print or type narne ofperson listed in Cencral Information, item 2) Doh S . W i 11 i a m s , Sr .
certify that the information included on this permit application form is, to the best of my knowledge, correct
P that the project will Pe constructed in conformance with the approved plans, that the required deed restricti
and protective cov nail/ recorded, a that the proposed project complies with the requirements of
NCAC 2H .1000.
Signa[w'e: _ Date- ­--7-0 7
Form SWU-101 Version 3.99 Page 4 of 4

I'crniii No. 3
(to be p, oviclecl by DWQ)
Stalc of Nur(h Carolina i
Dcl)arltue,it of Lnvironment and Natural Resources
Divisioll of Watel- Qu,dlly
STORMWATLR MANACL'NICNT fL:RN41T APPLICA'C[ON FORM
FEB 1 0 2007
(� WET DETENTION BASIN SUPPLEMENT
Dyy�p� Q-,J�/� ttARV This form may be photocopied for use as an original
1
i
DWQ Slortnwater Management Plan Review
A complete stoimwatcr management plan submittal includes as application form, a wct detention basic
supplement for cacti basin, design calculations, and plans and specificalions showing all basin and ou(Ict
structure details.
1. PROJECT1NFORIVbV1'l0N
PiojeclNamc: Savin Woods
COnlect Pcl's011: Don S. Williams, Sr. Phonc Number: L25
For projects with Imulliple basins, spccily which basin diis worlcshcct applies to: .
elevations
Basin Bottom Elevation
Permanent Pool Elevation
Tempormy Pool Elevation
202-1497
—1 . 0 R. (floor of the basin)
3 - 0 Ct. (elevation of the orifice)
4.06 ft. (elevation of the discharge sU-ucture overflow)
areas
Pcrmancut Pool Surface Aica__ 30 , 019 sq. ft.
Drainage Area , 14.12 ❑c.
Impervious Area
volunies
Permanent Pool Volume
Temporary Pool Volume
poicbay Volumc, -
Other parameters
SA/DA l
Diameter of Orifice
Design Rainfall
Design TSS R6moval 2
7.39 ac.
(Hater snl ace area at the clr /ice elevation)
(on -.rile (tnd of/ -site drainage to the basin)
(on -site and ojf site drainage to the bushi)
79,849 !
cu. R. (c•anibined volume a/nutin Garin and /fireball)
33,325 Co. fl. (volunie detained above the pernianent pool)
— 15,104 cu. I:l. (opproxinialely 20%, c?f total volinne)
4.6
(suifcice area to di ainagc area ratio j oni UYl'Q /able)
3 ill. (2 to 5 clay tenvpora,y pool 11-01v-do11,11 rvglrirei�
5.75 in, (10 year storm)
90 % (tnininrzun 85%require(l
Form SWU-102 Rev 3.99 Page 1 of 4

Footnotes:
Whcu using the Division SA/DA In bles, the correct SA/DA iatiu fur pet tmillet t pool sizing should be cunt pu led based upuu the
actual impcwious % and peruuuroul poul depth. Linear interpolation should be employed to determine the correct value for nuu-
standard table entries.
2 lu the 20 coastal counties, the rcqui I cuwnl fur a vcgcl;It, vc nllcr may be waived if the wcl dciculiou basin is designed to pluvidc
90%TSS rcmov:d. The NCDDNR BMF manual provides design tables for both 85%TSS icluoval and 90%TSS reuloval.
11. REQUIRED ITEMS CHECKLIST
The following checklist outlines design requirements per the Stormwater Best Management Practiccs NIMIual
(N.C. Department of Environment, health and Natural Resources, February 1999) and Administ'etivc Code
Section: 15 A NCAC 2I-I .1008.
hritial in the space provided to indicate the following design rcquircmenls have been mct and supporting
documentation is attached. If the applicant has designated an agent in the Siormwatcr Managet�lent Permit
Application 1�omi, the agent clay initial below. If a re(luirculeul has uol beml fuel, att:lch juslific jou.
Applicants Initials
a.
b.
G.
Q� d.
xxxxxxX C.
Tile permanent pool depdr is between 3 and 6 feet (required minimum of 3
The foi ebay volume is approximately equal to 20% of file basin volmnc.
The temporary pool controls runoff G'om the design storm event.
The temporary pool draws clown in 2 to 5 days.
If required, a 30-fool vegetative filter is provided at the outlet (include non
calculations)
f. The basin length to width ratio is greater than 3:1.
The basin side slopes above the pcirnauent pool are no steeper tlian 3:1.
A submerged and vegetated perimeter shelf with a slope of 6:1 or less (show d
Vegetative cover above the peramancnt pool elevation is specified.
A trash rack or similar device is provided for bolh the overflow and orifice.
A recorded drainage easement is provided for each basin including access to n
of -way.
If the basin is used for sediureut and erosion control during eonslrtiction, clear
basin rs spccificul prior lu use as a wcl detention basin.
_ in. A urcchauism is spccilicd which will drain the basin for utainten arce or an ell
(pump)
'c flow
i I).
cst right -
I of the
-ncy.
I11. WET DETENTION BASIN OPERATION AND MAINTENANCE AGRELMENT �
The we[ detention basin system is defined as the wet detention basin, prelrcatrnenl including forebays and the
vegetated filter if one is provided.
This systenr,(chec%one) 0 does 0:,does not incorporate a vegetated 61tcr at the outlet.
This syslenl (ihec% one) 0 does �does uol incorporate prelreatureul other th:ut a forebay.
Form SWU-102 Rev 199 Page 2 of 4

Maintenance activities shall be performed as follows:
After every signilicaut runoff producing rainfall even( and al least monthly:
a. Inspect the weL detention basin system for sediment accumulation, erosion, trash aecuunulaLi
vegetated cover, and general condition.'
b. Check and clear the orifice of any obstructions such that drawdown of the temporary pool oc
2 to 5 days as designed.
Repair eroded areas immediately, re -seed as necessary to maintain good vegetative cover, mow
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
proper functioning.
within
It. Remove accumulated sediment from the wet detention basin system semi-annually or when deptl3 is
reduced to 75% of the original design depth (sce diagram below). Removed sediunenl shall be diposcd of
in an appropriate manner and shall be handled in a manner that will not adversely impact water q lality (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 ccuauc
depth reading and not readily penetrate into accumulated sediments.
When the permanent pool clepol reads 3-0 feet in the main pond, the sediment shall be
When the permanent pool depth reads 2. 25 feet in tine forebay, (lie sediment shall be rer
BASIN DIAGRAM
aill in the blanks)
Permanent Pool Elevation 3.0
j
scdimcut Rcu oval HI. 75 - - 75 o
-------- Sediment Removal Elevation 0 75%
Bollow Etc ;thou .i% •----------------------------------------------------- j
Borrom (elevation —1 0 25-X,
I
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 slielf and forebay berm.
i
G. If the basin must be chained for an emergency or to perform maintenance, the flushing of scdiuicnit through
the emergency drain shall be minimized to the maximum extent practical
Porn SWU-102 Rev 3.99 Page 3 of

Attachment to WET DETENTION BASIN SUPPLEMENT
For Savin Woods
Detention Pond A — Drainage Area 1
e. Pond has been designed for 90% TSS removal.
k. The pond will be located entirely on property owned by the Homeowners
Association that has frontage on a street right of way.

All-cumponcuts of the wet detention basin system shall be uraiutttined 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 any
changes to the system or responsible party.
Print name
Ti
Currituck NC 27929
Si
Date: ,1—%" o
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 presidcut. I
C.e(1r�_�a Notary Public for the State of ANZ,
County of� aG do hereby certify that (1�n S l �t l\moo a Sr
personally appeared before me this day of &— ,br and acknowledge the due
execution of the forgoing wet detention basin maintenance requirements. Witness my hand and officialiseal,
MARIANNE J. COOPER
NOTARY PUBLIC
PASOUOTANN COUM NC
SEAL
My commission expires_ LD 1 z' dA
Form SWU-102 Rev 3.99 Page 4 of