SW7050214_CURRENT PERMIT_20050505

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

�pF W A rEMichael F. Easley, Governor Vki�o
" G William G. Ross Jr., Secretary
North Carolina Department of Environment and Natural Resources
Alan W. Klimek, P.E. Director
Division of Water Quality
DIVISION OF WATER QUALITY
May 5, 2005
�• S Jones !�CLCL`� sc. /700 >/
artd2 Joh» 5.+,a /� L'I2AIR- 1
146 W
Dr. Jeffery Moss, Superintendent
Beaufort County Schools
321 Smaw Road
Washington, NC 27889
Subject: Permit No. SW7050214
Washington Middle School
High Density Stormwater Project
Beaufort County
Dear Dr. Moss:
The Washington Regional Office received a completed Stormwater Application for the subject project
on May 5, 2005. 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.
SW7050214 dated May 5, 2005 to Beaufort County Schools for a wet detention pond and grassed swales to
serve the proposed Washington Middle School located on Market Street Extension in Beaufort County.
This permit shall be effective from the date of issuance until May 5, 2015 and shall be subject to the
conditions and limitations as specified therein. Pease pay special attention to the Operation and Maintenance
requirements in this permit. Failure to establish an adequate system for operation and maintenance of the
stormwater management system will result in future compliance problems.
if any parts, requirements, or limitations contained in this permit are unacceptable, you have the right
to request an adjudicatory hearing upon written request within thirty (30) days following receipt of this permit.
This request must be in the form of a written petition, conforming to Chapter 150B of the North Carolina
General Statutes, and filed with the Office of Administrative Hearings, 6714 Mail Service Center, Raleigh, NC
27699-6714. 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 me
at [phone].
Sincerely,
LgeX Thorpe
Environmental Engineer
Washington Regional Office
cc; Baldwin & Associates
Beaufort County Inspections
v4ashington Regional Office
Central Files
Ore
NooyhCarc
Aatura,
North Carolina Division of Water Quality Washington Regional Office Phone [phone] FAX [phone] Customer Service
Intemet h2o.enr.state.nc.us 943 Washington Square Mail, Washington, NC 27889 1-877-623-6748

State Stormwater Management Systems
Permit No. SW7050214
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
STATE STORMWATER MANAGEMENT PERMIT
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
Beaufort County Schools
Beaufort 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 rulesl 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 and
grassed swales to serve the proposed Washington Middle School located on Market Street Extension in
Beaufort County.
This permit shall be effective from the date of issuance until May 5, 2015 and shall be subject to the following
specified conditions and limitations;
DESIGN STANDARDS
This permit is effective only with respect to the nature and volume of stormwater described in the
application and other supporting data.
This stormwater system has been approved for the management of stormwater runoff as described
on page 2 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.

DIVISION OF WATER QUALITY
PROJECT DATA
Project Name:
Washington Middle School
Permit Number:
SW7050214
Location:
Beaufort County
Applicant:
Beaufort County Schools
Mailing Address:
321 Smaw Road
Washington, NC 27889
Application Date:
2/11/2005 (original)
Receiving Stream:
UT to Cherry Run
Classification of Water Body:
C — Swp - NSW
Total Site Area:
88.67 ac
Total Impervious:
15.25 ac
Wet Pond Depth:
3.0 ft
Required Storage Volume:
65,915 cf
Provided Storage Volume:
65,915 cf
Required Surface Area:
80,803 sf
Provided Surface Area:
93,174 sf
Controlling Orifice:
3 inch @ elevation 36.0 ft

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.
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. Transfer 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.
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 specifed 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
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.
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.
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:
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 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.

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 accordance with 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 for a
minimum of five years from the date of the completion of construction.
�riT�;7_1>�i7�] ► G7�Ci7il+?
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.
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 143-215.6(c).
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.
6. The Permittee, at least six (6) months prior to the expiration of this permit, shall submit in writing a
request for an extension along with appropriate application fee.
Permit issued this the 5 th day of May, 2005.
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
for Alan W. Klimek, P.E. Director
Division of Water Quality
By Authority of the Environmental Management Commission
Permit Number SW7050214

Washington Middle School - Beaufort County
Stormwater Permit No. SW7050214
Designer's Certification
I, , as a duly
Registered Professional Engineer in the State of North Carolina, having been authorized to observe
(period ically/weeklylfuII 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

Compliance Inspection Report
Permit: SW7050214 Effective:05/05/05 Expiration: 05/05/19
Project: Washington Middle School
Owner: Beaufort County Schools
County: Beaufort Adress: Market St Extension
Region: Washington
Contact Person: Jeffrey Moss Title:
Directions to Project:
Type of Project: State Stormwater - HD - Detention Pond
Drain Areas: 1 - (Cherry Run) (03-03-06) ( C;Sw,NSW)
On -Site Representative(s):
Related Permits:
City/State/Zip: Washington NC 27889
Phone:
A/bo
Inspection Date: 07/31/2017 Entry Time: 03:30PM
Primary Inspector: William J Moore
Secondary Inspector(s):
Reason for Inspection: Routine
Permit Inspection Type: State Stormwater
Facility Status: ■ Compliant ❑ Not Compliant
Question Areas:
® State Stormwater
(See attachment summary)
QKK
r
��n 3�r��% ���r►nCn�rS/ Sc�iiv�
Exlt Time: 04:10PM
Phone: [phone] Ext.264
Inspection Type: Compliance Evaluation
page: 1

Permit: SW7050214
Inspection Date: 07131/2017
Owner - Project: Beaufort County Schools
Inspection Type Compliance Evaluation
Reason for Visit: Routine
Inspection Summary:
This is HD-WP permit for PS Jones Middle School & John Small Elementary School; both on same site (originally
permitted as Washington Middle School). Project appears to be built according to plan. WP well maintained.
Buift Upon -Area Yes No NA NE
Is the site BUA constructed as per the permit and approval plans? i ❑ ❑ ❑
Is the drainage area as per the permit and approved plans? ■ ❑ ❑ ❑
Is the BUA (as permitted) graded such that the runoff drains to the system? 0 ❑ ❑ ❑
Comment:
SW Measures Yes No NA NE
Are the SW measures constructed as per the approved plans? ❑ ❑ ❑
Are the inlets located per the approved plans? ❑ ❑ ❑
Are the outlet structures located per the approved plans? ❑ ❑ ❑
Comment:
Operation and Maintenance Yes No NA NE
Are the SW measures being maintained and operated 'as per the permit requirements? 0 ❑ ❑ ❑
Are the SW BMP inspection and maintenance records complete and available for review or provided to ❑ ❑ ❑ 0
DWQ upon request?
Comment:
page: 2

Energy, Mineral &
Land Resources
ENVIRONMENTAL OVALITY
August 15, 2018
Mr. Russ Gurganus, Director of Maintenance
Beaufort County Schools
321 Smaw Road
Washington, NC 27889
Dear Mr. Gurganus:
W � tko
ROY COOPER
MICHAEL S. REGAN
Secretary
WILLIAM E. (TOBY) VINSON, JR.
Interim Dhrcror
Subject: Stormwater Permit Renewal
Stormwater Management Permit SW7050214
P.S Jones Middle School & John Small Elem.
Beaufort County
A Division of Energy, Mineral, and Land Resources file review has determined that
Stormwater Permit SW7050214 for a stormwater treatment system consisting of a wet
detention pond serving the P.S Jones Middle School and John Small Elementary
School expires on May 5, 2019. This is a reminder that permit renewal applications are
due 180 days prior to expiration. We do not have a record of receiving a renewal
application.
Please submit a completed permit renewal application along with a $505.00 fee for
permit renewal. Also, it was noted in the file review that a designer's certification that the
project was constructed in accordance with the approved plans as required by the
permit has not been submitted. Please include this with your application. Permit
application forms for renewal can be found on our website at
https:/Idea.nc.gov/about/divisions/energymineral-land-resources/energy-minei-al-land-
rules./stormwater=program jpost-construction. 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]. 1 will be glad to
discuss this by phone or meet with you. If you wish I can e-mail you a copy of the
renewal application. Let me know by sending an e-mail to [e-mail].
Sincerely,
Roger K. Thorpe
Environmental Engineer
State of North Carolina I Environmental Quality I Energy. Mineral and Land Resources
Washington Regional Office 1 943 Washington Square Mall k Washington. NC 27889
251446 6481

OFFICE USE ONLY
Date Received
Fee Paid
Permit Number
1 2005
5 V4.4c-K - /0-s-
WVVY-VV VY_ State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
This form may be p1mocopied for use as an original
I. GENERAL INFORMATION
1. Applicants name (specify the name of the corporation, individual, etc. who owns the project):
Beaufort County Schools
2. Print Owner/Signing Official's name and title (pers on legally responsible for facility and compliance):
Dr. Jeffrey Moss Superintendent, BCS
3. Mailing Address for person listed in item 2 above:
321 Smaw Road
City: Washington State: North carolina Zip: 27889
Telephone Number: [phone]
4. Project Name (subdivision, facility, or establishment name - should be consistent with project name on
plans, specifications, letters, operation and maintenance agreements, etc.):
New Washington Middle School
5. Location of Project (street Address):
Market Street Extension
City: Washington County: Beaufort
6. Directions to project (from nearest major intersection):
Traveling North on Market Street, from intersection of Market and 264, head approx 3.5 miles. Site
located on west side of road.
7. Latitude: N35 deg 36.041'00" Longitude: W 77 deg 1.1771'00" of project
8. Contact person who can answer questions about the project:
Name: Michael D. Tolsen, P.E. Telephone Number: [phone]
II. PERMIT INFORMATION:
Specify whether project is (check one): XNew Renewal Modification
F'orm SWU-101 Version 3.99 Page l Of 4

t '
2. If this application is being submitted as the result of a renewal or modification to an existing permit, list the
existing permit number N/A 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/Erosion Control 404/401 Permit X NI'DES Stormwater
Information on required state permits can be obtained by contacting the Customer Service Center at
1-877-623-6748.
III. PROJECT INFORMATION
1. In the space provided below, summarize how stormwater will be treated. Also attach a detailed narrative (one to
two pages) describing stormwater management for the project .
Storm Water is being routed through storm drain collection system to a proposed wet detention pond. The
proposed pond has been sized to treat the first inch of run off from the entire site.
2. Stormwater runoff from this project drains to the Tar — Pamlico River basin.
3. Total Project Area: 88.67 acres 4. Project Built Upon Area: 17.19%
5. Flow many drainage areas does the project have? 1
6. Complete the following information for each drainage area. If there are more than two drainage areas in the
project, attach an additional sheet with the information for each area provided in the same format as below.
Basin Information
Receiving Stream Name
Drainage Area 1
Cherry Run via unnamed tributary
Drainage Area 2
Receiving Stream Class
C SW NSW
Drainage Area
88.67 Acres
Existing Impervious* Area
0
Proposed Impervious *Area
15.25
%, Impervious * Area (total)
17.19
Impervious * Surface Area
On -site Buildings
Drainage Area 1
4.83
Drainage Area 2
On -site Streets
5.53
On -site Parking
3.68
On -site Sidewalks
1.21
Other on -site
Off -site
Total: 15.25
Total:
Form SWU-l01 Version 3.99 Page2 of 4

areas, sidewalks, gravel areas, etc.
7. How was the off -site impervious area listed above derived?
N/A
IV. DEED RESTRICTIONS AND PROTECTIVE COVENANTS
The following italicized deed restrictions and protective covenants are required to be recorded for all
subdivisions, outparcels and future development prior to the sale of any lot. If lot sizes vary significantly,
a table listing each lot number, size and the allowable built -upon area for each lot must be provided as an
attachment.
1. The following covenants are intended to ensure ongoing compliance with state stormwater management permit
number as issued by the Division of Water Quality. These covenants
may not be changed or deleted without the consent of the State.
2. No more than
square feet of any lot shall be covered by structures or impervious materials.
Impervious materials include asphalt, gravel, concrete, brick, stone, state or similar material but do not include
wood decking or the water surface: of swimming pools.
3. Swales shall not be filled in, piped, or altered except as necessary to provide driveway crossings.
4. Built -upon area in excess of the permitted amount requires a state stormwater ianagement permit modification
prior to construction.
5. All permitted runoff from outparcels or future development shall be directed into the permitted stormwater control
system. These connections to the stormwater control system shall be performed in a manner that maintains the
integrity and 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 Page3 of 4

M
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.
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 MDT
• One copy of the applicable Supplement Form(s) for each 13MP
• Permit application processing fee of $420 (payable to NCDEN IZ)
• Detailed narrative description ofstormwater treatment/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 numbers
- Original contours, proposed contours, spot elevations, finished floor elevations
- Details of roads, drainage features, collection systems, and stormwater control measures
- Wetlands delineated, or a note on plans that none exist
- Existing drainage (including off -site), drainage easements, pipe sizes, runoff calculations
- Drainage areas delineated
- Vegetated buffers (where required)
VII. AGENT AUTHORIZATION
If you wish to designate authority to another individual or firm so that they may provide information
on your behalf, please complete this section.
Designated agent (individual or firm): Baldwin and Associates
Mailing Address: 1015 Conference Drive
City: Greenville State: North Carolina Zip: 27834
Phone: [phone] Fax: [phone]
VIIl. APPLICANT'S CER TIFICATION
1, (print or type name of person listed in General Information, item 2), Jeffrey Moss,
certify that the information included on this permit application form is, to the best of my knowledge,
correct and that the proje e constructed in conformance with the approved plans, that the required
deed restrictions an rotective co enants will be recorded, and that the proposed project complies with
the requiremen of I5; CAC ;1 qK.
Signature:
Form SWU-101 Version 3.99 Page4 of 4

Permit No.
(to be pro viG LtDW
State of North Carolina l y OV
Department of Environment and Natural Resources
Division of Water Quality FEB 1 1 2005
STORMWATER MANAGEMENT PERMIT APPLICATION FORM DWQ-WARD
WET DETENTION BASIN SUPPLEMENT
This form may be photocopied for use as an original
DWQ Stornnvater Management Plan Review: A complete storrnwater 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.
1. 11110.TECT INFORMATION
Project Name: Washington Middle School
Contact Person: Dr. Jeffrey Moss Phone Number: [phone]
For projects with multiple basins, specify which basin this worksheet applies to: Tar - Pamlico
elevations
Basin Bottom Elevation 33 ft. (floor of the basin)
Permanent Pool Elevation 36 ft. (elevation of'the orifice)
Temporary Pool Elevation 36.69 ft. (elevation of the discharge structure overflow)
areal
Permanent Pool Surface Area 93,174 sq. ft. (water surface area at the or fice elevation)
Drainage Area +1- 39 ac. (on -site and off -site drainage to the basin)
impervious Area 15.25 ac. (oat -site and off -site drainage to the basin)
voh(Ines
Permanent Pool Volume 250,898 cu. ft. (co anbined vohrnte ofmain basin and forebay)
Temporary Pool Volume 65,915 cu. ft. (volunre tletained above the per7naneut pool)
Forebay Volume 90,999 cu. ft. (approximately 20X oftotal volume)
Other parameters
i
SA/DA 2.09 (surface area to drainage area ratio.fi•onr DPVQ table)
Diameter of Orifice 3,0 in. (2 to 5 day temporary pool draw -dowry required)
Design Rainfall 6.6 in.
z
Design TSS Removal 90 % (anininrunr 85% required)
Form SWU-102 Page I of 4

Footnotes:
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 nonstandard table entries.
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 13M11' manual provides design tables for both 85% TSS removal and
9o% TSS removal.
H. R.EQUIRED 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 Pennit
Application Form, the agent may initial below. If a requirement has not been met, attach justification.
Applicants Initials
MDT a. The permanent pool depth is between 3 and 6 feet (required minimum of 3 feet).
MDT b. The forebay volume is approximately equal to 20% of the basin volume.
MDT c. The temporary pool controls runoff from the design storm event.
MDT d. The temporary pool draws down in 2 to 5 days.
MDT e. If required, a 30-foot vegetative filter is provided at the outlet (include non -erosive flow
calculations)
MDT f. The basin length to width ratio is greater than 3:1.
MDT g. The basin side slopes above the permanent pool are no steeper than 3:1.
MDT h. A submerged and vegetated perimeter shelf with a slope of 6:I or less (show detail).
MDT i. Vegetative cover above the permanent pool elevation is specified.
MDT j. A trash rack or similar device is provided for both the overflow and orifice.
MDT k. A recorded drainage easement is provided for each basin including; access to nearest right-of-way.
MDT I. 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.
MDT m. A mechanism is specified which will drain the basin for maintenance or an emergency.
Ill. 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 ate) Qdoes (X) does not incorporate a vegetated filter at the outlet.
This system (check one) Qdoes (X) does not incorporate pretreatment other than a forebay.
Form S W U-102 Page 2 of 4

Maintenance activities shall be performed as follows:
1. After every significant runoff producing rainfall event and at least monthly:
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 2.25 feet in the main pond, the sediment shall be removed.
When the permanent pool depth reads 2.25 feet in the forebay, the sediment shall be removed.
BASIN DIAGRAM
(fill in the blank)
0 Permanent Pool Elevation 36.00
SedimentRenovalEl.1 33.75 75 0 ;
�....
Sediment Removal Elevation _ ^33.75 75%
Bottom Ele ation 33A0 %----------------------------------------�___125%
------
Ill
Bottom Elevation 33.00
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.
G. 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 S W U-102 Page 3 of 4

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 any changes to the system or responsible party.
Print name: Dr. Jeffrey Moss
Title: Superintendent, Beaufort County Schools
Address: 321 Smaw Road, Washington, NC 27889
Phone
Signa
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 Page 4 of