SW7120906_CURRENT PERMIT_20200609

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

ROY COOPER
Governor
MICHAEL S. REGAN
Secretary
BRIAN WRENN
Director
NORTH CAROLINA
Environmental Quality
June 9, 2020
Chowan University
Attention: Mr. Danny R. Davis, VP for Business Affairs
One University Place
Murfreesboro, NC 27855
Subject: Stormwater Permit No. SW7120906 Renewal
Chowan University Athletic Facilities — Phase I
High Density Project
Hertford County
Dear Mr. Davis:
The Washington Regional Office received a complete Stormwater Management Permit
Application for renewal for the Chowan University Athletic Facilities — Phase I located at
114 Hassell Road Murfreesboro, NC on May 12, 2020. Staff review of the application and
supporting document has determined that the permit can be renewed. We are forwarding
Permit No. SW7120906 dated June 9, 2020, for the construction and continued operation
of the subject project.
This permit shall be effective from October 27, 2020 until October 26, 2028 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 sixty (60)
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,
Roger K. Thorpe
Environmental Engineer
Washington Regional Office
North Carolina Departrnent of cnvironrnenta; Quality I Division of Energy, Mineral and Land Resources
i
�r
'-Vashington Regional Ofnce 943 Washington Square Mall j Washington. North Carolina 27889
Oewnmeni "I Enn:anmenui duahIT 521.114 h.ihd$1 1

STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENTAL QUALITY
DIVISION OF ENERGY, MINERAL, AND LAND RESOURCES
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
Chowan University
Athletic Facilities — Phase 1
Located at
114 Hassell Road, Murfreesboro, NC
Hertford County
FOR THE
construction, operation and maintenance of a wet detention pond in compliance with the
provisions of 15A NCAC 2H .1000 (hereafter referred to as the "storm water rules') and
the approved stormwater management plans and specifications and other supporting
data as attached and on file with and approved by the Division of Energy, Mineral, and
Land Resources (Division) and considered a part of this permit.
This permit shall be effective from October 27, 2020 until October 26, 2028, and shall
be subject to the following specified conditions and limitations:
I. DESIGN STANDARDS
1. This permit is effective only with respect to the nature and volume of stormwater
described in the application and other supporting data.
2. This stormwater system has been approved for the management of stormwater
runoff as described in Section 1.7 of this permit. The stormwater control has been
designed to handle the runoff from a total of 281,816 square feet of impervious
area.
3. The tract will be limited to the amount of built -upon area indicated in Section I. of
this permit, and per approved plans.

4. All stormwater collection and treatment systems must be located in either
dedicated common areas or recorded easements. The final plats for the project
will be recorded showing all such required easements, in accordance with the
approved plans.
5. The runoff from all built -upon area within the permitted drainage area of this
project must be directed into the permitted stormwater control system.
6. The built -upon areas associated with this project shall be located at least 50 feet
landward of all perennial and intermittent surface waters.
7. The following design criteria have been provided in the wet detention pond and
must be maintained at design condition:
a. Drainage Area, ft2: 352,270
b. Total Impervious Surfaces, ft2: 281,816,
(143,558 ft2 —current proposal)
(138,258 ft2 —future expansion)
C. Design Storm, inches: 1.5
d. Pond Depth - average, feet: 4.5
e. TSS removal efficiency: 85%
f. Permanent Pool Elevation, FMSL: 56.50
g. Perm. Pool Surface Area required, ft2: 16,557
h. Permanent Pool Surface Area, ft2: 18,331
i. Min. Volume required, ft3: 33,906
j. Permitted Storage Volume, ft3: 50,023
k. Temporary Storage Elevation, FMSL: 58.75
1. Controlling Orifice: 2.50"0 pipe
m. Permitted Forebay Volume, ft3: 16,733
n. Maximum Fountain Horsepower: 113 HP
o. Receiving Stream/River Basin: Hares Branch/Chowan River Basin
P. Stream Index Number: 25-4-6 '
q. Classification of Water Body: "C; NSW'
II. SCHEDULE OF COMPLIANCE
The stormwater management system shall be constructed in its entirety,
vegetated and operational for its intended use prior to the construction of any
built -upon surface.
2. During construction, erosion shall be kept to a minimum and any eroded areas of
the system will be repaired immediately.
3. The permittee shall at all time provide the operation and maintenance necessary
to assure the permitted stormwater system functions at optimum efficiency. The
approved Operation and Maintenance Plan must be followed in its entirety and
maintenance must occur at the scheduled intervals including, but not limited to:
a. Semiannual scheduled inspections (every 6 months).
b. Sediment removal.
C. Mowing and re -vegetation of slopes and the vegetated filter strip.
d. Immediate repair of eroded areas.

e. Maintenance of all slopes in accordance with approved plans and
specifications.
f. Debris removal and unclogging of outlet structure, orifice device, level
spreader, filter strip, catch basins and piping.
g. Access to the outlet structure must be available at all times.
4. Records of maintenance activities must be kept for each permitted BMP. The
records will indicate the date, activity, name of person performing the work and
what actions were taken.
5. The permittee shall submit to the Division an annual summary report of the
maintenance inspection records for each BMP. The report shall summarize the
inspection dates, results of the inspections, and the maintenance work performed
at each inspection.
6. Access to the stormwater facilities shall be maintained via appropriate
easements at all times.
7. The facilities shall be constructed as shown on the approved plans. This permit
shall become void unless the facilities are constructed in accordance with the
conditions of this permit, the approved plans and specifications, and other
supporting data.
8. Upon completion of construction, prior to issuance of a Certificate of Occupancy,
and prior to operation of this permitted facility, a certification must be received
from an appropriate designer for the system installed certifying that the permitted
facility has been installed in accordance with this permit, the approved plans and
specifications, and other supporting documentation. Any deviations from the
approved plans and specifications must be noted on the Certification. A
modification may be required for those deviations.
9. 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.
10. The permittee shall submit to the Director and shall have received approval for
revised plans, specifications, and calculations prior to construction, for any
modification to the approved plans, including, but not limited to, those listed
below:
a. Any revision to any item shown on the approved plans, including the
stormwater management measures, built -upon area, details, etc.
b. Project name change.
G. Transfer of ownership.
d. Redesign or addition to the approved amount of built -upon area or to the
drainage area.
e. Further subdivision, acquisition, lease or sale of all or part of the project
area. The project area is defined as all property owned by the permittee,
for which Sedimentation and Erosion Control Plan approval or a CAMA
Major permit was sought.
f. Filling in, altering, or piping of any vegetative conveyance shown on the
approved plan.

A�
11. 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.
12. The permittee shall submit final site layout and grading plans for any permitted
future areas shown on the approved plans, prior to construction.
13. 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 is 113HP.
14. A copy of the approved plans and specifications shall be maintained on file by
the Permittee at all times.
III. GENERAL CONDITIONS
This permit is not transferable except after notice to and approval by the Director.
In the event of a change of ownership, or a name change, the permittee must
submit a completed Name/Ownership Change application, to the Division, signed
by both parties, and accompanied by supporting documentation as listed on page
2 of the form. The project must be in good standing with the Division. The
approval of this request will be considered on its merits and may or may not be
approved.
2. The permittee is responsible for compliance with all permit conditions until such
time as the Division approves the transfer request.
3. Failure to abide by the conditions and limitations contained in this permit may
subject the Permittee to enforcement action by the Division, 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) having jurisdiction.
5. In the event that the facilities fail to perform satisfactorily, including the creation of
nuisance conditions, the Permittee shall take immediate corrective action,
including those as may be required by this Division, such as the construction of
additional or replacement stormwater management systems.

a
6. The permittee grants DEQ Staff permission to enter the property during normal
business hours for the purpose of inspecting all components of the permitted
stormwater management facility.
7. The permit issued shall continue in force and effect until revoked or terminated.
The permit may be modified, revoked and reissued or terminated for cause. The
filing of a request for a permit modification, revocation and re -issuance or
termination does not stay any permit condition.
8. Unless specified elsewhere, permanent seeding requirements for the stormwater
control must follow the guidelines established in the North Carolina Erosion and
Sediment Control Planning and Design Manual.
9. Approved plans and specifications for this project are incorporated by reference
and are enforceable parts of the permit.
10. The issuance of this permit does not prohibit the Director from reopening and
modifying the permit, revoking and reissuing the permit, or terminating the permit
as allowed by the laws, rules and regulations contained in Title 15A NCAC
2H.1000, and NCGS 143-215.1 et.al.
11. The permittee shall notify the Division of any name, ownership or mailing address
changes at least 30 days prior to making such changes.
12. This permit shall be effective from October 27, 2020 until October 26, 2028.
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.
Permit issued this the 9 th day of June 2020.
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
Brian Wrenn, Director
Division of Energy, Mineral, and Land Resources
By Authority of the Environmental Management Commission
Stormwater Permit No. SW7120906
for

rN
... . , -
. DEMLR USE,ONLY _
Date Received
Fee Paid
Permit Number
I'y
vo
0 0
NC DEQ Division of Energy, Mineral and Land Resources
STATE STORMWATER:
PERMIT RENEWAL APPLICATION FORM
In accordance with .15A NCAC 2H.1045(31, the current permit holder shall renew their high density permit 180 days
prior to its expiration. Renewed permits are valid for a period of 8 years per Session Law 2011-398 (SB 781)
Section 60.(c). This application form is for permit renewals only,
A. PROJECT INFORMATION
1. State Stormwal
2. Project name:
RECEIVED MAY 12 20A
3. Nroject street address: 1/ m , o: e- e-
City: i rt County: Hc,go✓cA ZIP : (97K55
4. What, if any, changes have been made to the project as permitted?
If the project has changed from the original approved plans, please complete SWU-101 for a Major
Modification or Minor Modification Application form available at: https://deg.nc.gov/about/division§/eneA -
minera -and-resourceslenergy-minera l-land-ruleslstormwater-programlpost-construction.
B. PERMITTEE INFORMATION
If changes to the permittee or project name have been made, please complete either the Permit Update form
or the Permit Transfer form available at: https:l/deq.nc.gov/about/divisions/energy-mineral-land-
resourceslenergy-mineral-land-ruleslstormwater-programlpost-construction. State Stormwater Permits do not
automatically transfer with the sale of the property.
1. Current Permit Holder's Company Name/Organization: �h�4,� r, n,`ue151'4,1
2. Signing Official's Name: 1>44A,J
OF
3. Signing Official's Title: v ., e �- 4L� :yN e S!S,
4. Mailing Address: 64C un I j
City: LIL-Le GS Ar2,ti State: AX— ZIP : _,�7�5S-
5. Street Address:
City: State: ZIP
6. Phone: (;75a) 395(- C 9,S-O Email: ��,r,.��,r„c �1nat�aya. ed(l
1
Stormwater Permit Renewal Form Page 1 of 3 May 11, 2018

C. SUBMITTAL. REQUIREMENTS
Submit the application package to the appropriate DEMLR Regional Office (Coastal, SA Waters) or DEMLR
Central Office (Urbanizing Areas Ph 2, USMP, Non -Coastal HQ W/ORM. Only applications packages that
include all required items listed below will be accepted and reviewed.
Initial each item below to indicate that the required information is provided in the application package:
1. A permit application processing fee of $505.00 payable to NCDEQ.
W�— 2. One original signed hard copy and one electronic copy of this completed form. The signing official
named on this application to represent the current permittee must meet one of the following:
a. Corporation — a principle executive officer of at least the level of vice-president;
b. Limited Liability Company (LLC) — a manager or company official as those terms are defined
in G.S. 57D "North Carolina Limited Liability Company Act;"
c. Public Entity — a principal executive officer, ranking official, or other duly authorized employee;
d. Partnership or limited partnership — the general partner;
e. Sole proprietor; or
f. Letter of authorization signed by one of the signatories noted in a — e above authorizing the
signature of another entity.
3. One hard copy and one electronic copy of recorded documents required by the original permit that have
not yet been received by DEMLR, including: deed restrictions, protective covenants,
condominium/planned community declaration and easements. If the project has been built, include
documentation that the maximum BUA per lot or maximum total BUA has not been exceeded. If
the project has not been built, include a signed agreement that the final recorded deed restrictions
and protective covenants will be submitted at a later date.
4 ' 4. O&M Agreements, Please select one:
❑ I have a copy of the current recorded O&M Agreement for all SCMs, and I will continue to
keep this on file with the permit; or
1 do not have a copy of the current recorded O&M Agreement for all SCMs and am
requesting a copy be sent to me. I agree to keep this on file with the permit.
5. Designer Certifications, Please select one:
A copy of the certifications) confirming that the project was built in accordance with the
approved plans have been previously provided to the Division; or
❑ A copy of the certification(s) confirming that the project was built in accordance with the
approved plans are enclosed; or
❑ The project has not yet been built.
6. [IF APPLICABLE] If the project has been built, one original hard copy and one electronic copy of a
signed, sealed, and dated letter from a licensed professional stating that the SCMs have been
inspected, and that they have been built and maintained in accordance with the permit.
7. [IF APPLICABLE] When the permittee is a corporation or a limited liability corporation (LLC): Provide
one hard copy and one electronic copy of documentation from the NC Secretary of State, or other
official documentation, which supports the titles and positions held by the persons listed in Section
C.2 per 15A NCAC 2H. 1043(3)(b).
https://www.sosnc.gov/on line services/search/by title/ Business Registration
Stormwater Permit Renewal Application Form Page 2 of 3 May 11, 2018

D. PERRMIT,TEE'S CERTIFICATION
the person legally responsible for the permit, certify that 1 have
a copy of the P rmit and O&M Agreement on site (or I will obtain a copy and it will be kept on site), that I am
responsible for the performance of the maintenance procedures, and the site has been and will be maintained
according to the O&M Agreement and approved plans. I agree to notify DEMLR of any problems with the SCMs
or built -upon area and to submit the proper forms to modify or transfer the permit prior to any changes to the
project, SCMs or ownership. All information provided on this permit renewal application is, to the best of my
knowledge corre nd complete
Signature: Date:'1 �ZU2U
NOTARJZATION:
that
a Notary Public for the State of
_r� ; County of do hereby certify
personally appeared before me
this the day of ',-A � 20 a 0 , and acknowledge the due
execution of the forgoing instrument. Witness my hand and official seal,
(Notary Seal)
Notary Signatur
My commission expires ', z p
Brenda N Baisey
NOTARY PUBLIC
Hertford County, NC . a0
My Commission Expires �11_ &
Stormwater Permit Renewal Application Form Page 3 of 3 May 11, 2018

SEAL
038607
F G
NCDENR
17/rl/l�12
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
WET DETENTION BASIN SUPPLEMENT
Permit No. <W f = CIO(;
(to be provided by DWQ)
This form must be fitted out, printed and submitted.
The Required llems Checklist (Part 111) must be printed, filled out and submitted along with all of the required information.
o`�oF w,3,•r•�QG
o
t` PROJECT INFORMATION J
Project name CHOWAN UNIVERSITY ATHLETIC FACILITIES - PHASE 1
Contact person DAVID GASTEL
Phone number 919-838-9331
Date 812812012
Drainage area number 8.087
II.' DESIGN INFORMATION , ".' ,,.t,, 1 ,,•.,,;., -1- h .1
Site Characteristics
Drainage area 352,270 e V� 1 pa ac
Impervious area, post -development 281,816 flZ
%impervious 80.00 % ✓
Design rainfall depth 1.5 in
StoragoVolume: Non-SAWaters
Minimum volume required 33,906 ft3 V
Volume provided 50,023 ft'
OK, volume provided is equal to or in excess of volume required.
Storage Volume: SA Waters
1.5" runoff volume
Pre -development 1-yr, 24-hr runoff
Post -development 1-yr, 24-hr runoff
Minimum volume required
Volume provided
Peak Flow Calculations
Is the prelpost control of the lyr 24hr storm peak flow required?
1-yr, 24-hr rainfall depth
Rational C, pre -development
Rational C, post -development
Rainfall intensity: 1-yr, 24-hr storm
Pre -development 1-yr, 24-hr peak flow
Post -development 1-yr, 24-hr peak flow
Pre/Post 1-yr. 24-hr peak flow control
Elevations
Temporary pool elevation
Permanent pool elevation
SHWT elevation (approx. at the porm pool elevation)
Top of 1011 vegetated shelf elevation
Bottom of 101 vegetated shelf elevation
Sediment cleanout, lop elevation (bottom of pond)
Sediment cleanout, bottom elevation
Sediment storage provided
Is there additional volume stored above the state -required temp, pool?
Elevation of the top of the additional volume
ft,
ft3
ft3
It
to
_{Y or N)/
2.9 in
O_00 (unitless)
0.64 (unitless)
0.12 infhr OK
0.00 ft3fsec
15.82 ft3fsec
15.82 ft'isec
1 58.75 fmsl
1 56.50 fmsl
`) 56.50 fmsl 1
57.00 fmsl J
56.00 fmsl.
r 49.00 fmsl
i 48 00 fmsl J
1.00 ft
Y (Y or N)
58.8 fmsl
RECEIVED
SEP 2 1 2012
pW(a-WARO
Data not needed for calculation option #1, but OK if provided.
Data not needed for calculation option #1, but OK if provided
OK
Form SW401-Wet Detention Basin-Ray.9-411e112 Parts I. & II. Design Summary, Page 1 of 2

Permit No.
(to be provided by D WQ)
II., DESIGN INFORMATION , 45'4 �r�r' l , Er,.i ,'rya ;i� u f 1,; t gw (.I t �(4a _.y'g 1t �, iM"[, ;
Surface Areas
Area, temporary pool
24,738 fh
Area REQUIRED, permanent pool
16,557 f?
SAIDA ratio
4.70 (unitless)
Area PROVIDED, permanent pool, A, _pm
18,331 ft'
OK
Area, bottom of 10ft vegetated shelf, Ads, � g
15,915 ft2
Area, sediment cleanout, top elevation (bottom of pond), Abur�nd
5,812 ft2
Volumes
Volume, temporary pool
60,023 ft3
OK
Volume, permanent pool, V,�_xA
82,044 ft3
Volume, forebay (sum of forebays if more than one forebay)
16,733 ft3
FDrebay % of permanent pool volume
21
OK
SAIDA Table Data
Design TSS removal
85 %
Coastal SAIDA Table Used?
Y (Y or N}
MountainlPiedmont SAIDA Table Used?
N (Y or N)
/
SAIDA ratio
4.70 (unitless)
y/
Average depth (used in SAIDA table):
Calculation option 1 used? (See Figure 10-21
y (Y or N)
Volume, permanent pool, Vmm-p-,
82,D44 ft3
Area provided, permanent pool, A,, p,
18,331 ft,
Average depth calculated
4.48 ft
K
Average depth used in SAIDA, day, (Round to nearest 0.5ft)
4.5 ft
OK
Calculation option 2 used? (See Figure,10-2b)
(Y or N)
Area provided, permanent pool, A,.,,.,
18,331 fe
Area, bottom of 10ft vegetated shelf, Abushau
15,915 ft'
Area, sediment cleanout, top elevation (bottom of pond), Ab L nil
5,812 f?
"Depth" (distance b1w bottom of 10ft shelf and top of sediment)
7.00 ft
Average depth calculated
ft
Average depth used in SAIDA, d_ (Round to down to nearest 0,5ft)
ft
Drawdown Calculations
Drawdown through orifice?
Diameter of orifice (if circular)
Area of orifice (if -non -circular)
Coefficient of discharge (Co)
Driving head (Ho)
Drawdown through weir?
Weir type
Coefficient of discharge (G.)
Length of weir (L)
Driving head (H)
Pre -development 1-yr, 24-hr peak Flow
Post -development 1-yr, 24-hr peak flow
Storage volume discharge rate (through discharge orifice of weir)
Storage volume drawdown time
Additional Information
Vegetated side slopes
Vegetated shelf slope
Vegetated shelf width
Length of flowpath to width ratio
Length to width ratio
Trash rack for overflow & orifice?
Freeboard provided
Vegetated filler provided?
Recorded drainage easement provided?
Capures all runoff at ultimate build -out?
Drain mechanism for maintenance or emergencies is:
Y ; ,--(Y.or N)]
L, _2.50 in I
in
0.60 (unitless)
2.25 ft
N (Y or N)
(unitless)
(unitless)
ft
ft
0.00 ft3lsec
0.23 Wised
0.14 ft3lsec
4.73 days
3 :1
10 A
Storage volume discharge rate greater than pre-dev. lyr24hr.
OK, draws down in 2-5 days.
OK
OK
10.0 ft
OK
3 :1
OK
2.9 :1
OK
Y (Y or N)
OK
To- ft
OK
Y (Y or N)
OK
Y (Y or N)
OK
Y (Y or N)
OK
Hydraulic PumplEmergency valve
Form SW401-Wet Detention Basin-Rev.9-4118112 Parts I. & II. Design Summary, Page 2 of 2

Permit No
(to be provided by DWQ)
III;; REQUIRED ITEMS CHECKLIST ,
is r � s � .1 "',u • 41
Please indicate the page or plan sheet numbers where the supporting documentation can be found. An incomplete submittal package will
result in a request for additional information. This will delay final review and approval of the project. Initial in the space provided to
indicate the following design requirements have been met. If the applicant has designated an agent, the agent may initial below. If a
requirement has not been met, attach justification.
Page/ Plan
Initials Sheet No.
6009
1. Plans (1" - 50' or larger) of the entire site showing:
Design at ultimate build -out,
Off -site drainage (if applicable),
Delineated drainage basins (include Rational C coefficient per basin),
Basin dimensions,
Pretreatment system,
High flow bypass system,
Maintenance access,
Proposed drainage easement and public right of way (ROW),
Overflow device, and
Boundaries of drainage easement,
RECEIVED
SEP 2 1 2012
D1NQ-WARS
fkc i�. 0 2. Partial plan (1" = 30' or larger) and details for the wet detention basin showing:
CG• I
Outlet structure with trash rack or similar,
Maintenance access,
Permanent pool dimensions,
Forebay and main pond with hardened emergency spillway,
Basin cross-section,
Vegetation specification for planting shelf, and
Filter strip.
66,0
3. Section view of the wet detention basin (1" = 20' or larger) showing:
CG • 2
Side slopes, 3:1 or lower,
Pretreatment and treatment areas, and
Inlet and outlet structures.
-
C.3.7
4. if the basin is used for sediment and erosion control during construction, clean out of the basin is specified
on the plans prior to use as a wet detention basin.
AL LS
5. A table of elevations, areas, incremental volumes & accumulated volumes for overall pond and for torebay,
CG-0
to verify volume provided.
C 3-2
fi. A construction sequence that shows how the wet detention basin will be protected from sediment until the
entire drainage area is stabilized.
C A L e
7. The supporting calculations.
FO t,-'S
8. A copy of the signed and notarized operation and maintenance (0&M) agreement.
N1A
9. A copy of the deed restrictions (if required).
I
C ( cs
10. A soils report that is based upon an actual field investigation, soil borings, and infiltration tests. County
soil maps are not an acceptable source of soils information.
Form SW401-Wet Detention Basin- Rev. 9-4118112 Part III, Required Items Checklist, Page 1 of 1

Permit Number: Sw`f17c'go 6
(to be provided by DWQ)
Drainage Area Number:
Wet Detention Basin Operation and Maintenance Agreement
I will keep a maintenance record on this BMP. This maintenance record will be kept in a
log in a known set location. Any deficient BM]" elements noted in the inspection will be
corrected, repaired or replaced immediately. These deficiencies can affect the integrity
of structures, safety of the public, and the removal efficiency of the BMP.
The wet detention basin system is defined as the wet detention basin,
pretreatment including forebays and the vegetated filter if one is provRECEIVED
This system (check ogre):
® does ❑ does not incorporate a vegetated filter at the outlet. SEP 2 1 2012
This system (check wie):
❑ does ® does not incorporate pretreatment other than a for b AjQ—WAR0
Important maintenance procedures:
— Immediately after the wet detention basin is established, the plants on the
vegetated shelf and perimeter of the basin should be watered twice weekly if
needed, until the plants become established (commonly six weeks).
— No portion of the wet detention pond should be fertilized after the first initial
fertilization that is required to establish the plants on the vegetated shelf.
— Stable groundcover should be maintained in the drainage area to reduce the
sediment load to the wet detention basin.
— If the basin must be drained for an emergency or to perform maintenance, the
flushing of sediment through the emergency drain should be minimized to the
maximum extent practical.
— Once a year, a dam safety expert should inspect the embankment.
After the wet detention pond is established, it should be inspected once a month and
within 24 hours after every storm event greater than 1.0 inches (or 1.5 inches if in a
Coastal County). Records of operation and maintenance should be kept in a known set
location and must be available upon request.
Inspection activities shall be performed as follows. Any problems that are found shall
be repaired immediately.
BMP element:
Potentialproblem:
How I will remediate theproblem:
The entire BMP
Trash debris is present.
Remove the trash debris.
The perimeter of the wet
Areas of bare soil and/or
Regrade the soil if necessary to
detention basin
erosive gullies have formed.
remove the gully, and then plant a
ground cover and water until it is
established. Provide lime and a
one-time fertilizer application.
Vegetation is too short or too
Maintain vegetation at a height of
long.
approximate[ six inches.
Form SW40I-Wet Detention Basin O&M-Rev.4 Page 1. of 4

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

Permit Number;
(to be provided by D IVQ)
Drainage Area Number:
BMP element:
Potentialproblem:
How I will remediate the problem,.
The embankment
Shrubs have started to grow
Remove shrubs immediately.
on the embankment.
Evidence of muskrat or
Use traps to remove muskrats and
beaver activity is present.
consult a professional to remove
beavers.
A tree has started to grow on
Consult a dam safety specialist to
the embankment.
remove the tree.
An annual inspection by an
Make all needed repairs.
appropriate professional
shows that the embankment
needs repair. if applicable)
The outlet device
Clogging has occurred.
Clean out the outlet device. Dispose
of the sediment off -site.
The outlet device is damaged
Repair or replace the outlet device.
The receiving water
Erosion or other signs of
Contact the local NC Division of
damage have occurred at the
Water Quality Regional Office, or
outlet.
the 401 Oversight Unit at 919-733-
1786.
The measuring device used to determine the sediment elevation shall be such
that it will give an accurate depth reading and not readily penetrate into
accumulated sediments.
When the permanent pool depth reads 7.5 feet in the main pond, the sediment
shall be removed.
When the permanent pool depth reads 7.5 feet in the forebay, the sediment
shall be removed.
Sediment Removal
Bottom Elevatio
49 1 I
-----------------
FOREBAY
BASIN DIAGRAM
(fill in the blanks)
Volume'
rt Min.
Sediment
Storage
Form SW401-Wet Detention Basin OEM-Rev.4
Permanent Pool Elevation 5 aU
Pool
------Sediment Removal Elevation 49---, Volume
Bottom Elevation
MAIN POND
Page 3 of 4
1-ft n,
Sediment
Storage

Permit Number:
(Io he provided by> DWQ)
acknowledge and agree by my signature below that I am responsible for the
performance of the maintenance procedures listed above. I agree to notify DWQ of any
problems with the system or prior to any changes to the system or responsible party.
Project name:Chowan University Athletic Facilities - Phase I
BMP drainage area number:8.09 Acres
Print name:Dr. M. Christopher White
Title:President of Chowan University _
Addre
Phone
Signat
Date:
Note: The legally responsible party should not be a homeowners association unless more than 5007o of
the lots have been sold and it resident of the subdivision has been named the president.
I
a Notary Public for the State of
t Aat.) , County of - , do hereby certify that
. �l�R►SloPl�c�, W141TE personally appeared before me this / 7-
day of it and acknowledge the due execution of the
forgoing wet detention basin maintenance requirements. Witness my hand and official
seal,
SEAL
My commission expires G 0
Form 5W401-Wet Detention Basin O&M-Rev.4 Page 4 of 4