SW7080205_CURRENT PERMIT_20080409

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO. I SW %l�
DOC TYPE I r CURRENT PERMIT
APPROVED PLANS
❑ HISTORICAL FILE
❑ COMPLIANCE EVALUATION INSPECTION
DOC DATE I 0 �04e)
YYYYMMDD

W6LRO
Michael F. Easley, Governor
William G. Ross Jr., Secretary
rNorth Carolina Department of Environment and Natural Resources
1
.� Coleen H. Sullins, Director
Division of Water Quality
April 09, 2008
Pasquotank County
Attn.: Randy Keaton
P.O. BOX 39
Elizabeth City, NC 27907
Subject: Stormwater Review SW7080205
River Road Soccer Complex
High Density Permit
Pasquotank County
Dear Mr. Keaton:
The Washington Regional Office received a complete Stormwater Management Permit Application for River Road
Soccer Complex on February 4, 2008. 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 21-1.1000. We are
forwarding Permit No. SW7080205 dated April 09, 2008 for the construction of the subject project.
17 13o1rl
This permit shall be effective from the date of issuance until April 09,2018 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 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 Ernest Odei-
Larbi, or me at [phone].
Sincerely,
dge
Regional Supervisor
Surface Water Protection Section
AH/eol: J:\WPDATA\WQS\ State SW-EOL\Permits — Hybrid -HD
cc: Jeff Ashbaugh (2320 West Morehead St., Charlotte, NC 28208)
Pasquotank County Planning/inspection
i 4ashington Regional Office
Central File
North Carolina Division of Water Quality Internet: wrsnv ncwateraualiny ore One
943 Washington Square Mall Phone [phone] NorthCar�fohna
Washington, NC 27889 Fax [phone] Nawral J/
An Equal Opportunity/Affirmative Action Employer - 50% Recyded/10% Post Consumer Paper i/

State Stormwater Management Systems
Permit No. SW7080205
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
Pasquotank County
River Road Soccer Complex
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 "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 April 09, 2018 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 control has been designed to handle the runoff from
106,287 square feet of impervious area.
3. The tract will be limited to the amount of built -upon area indicated on page 3 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.
2

State Stormwater Management Systems
Permit No. SW7080205
6. The following design criteria have been provided in the wet detention pond and must be maintained at
design condition:
Total Impervious Surfaces, fe: 149,411 (i.e. drainage area # 1 & 2)
Design Storm, inches: 1
Receiving Stream: Pasquotank river
Classification of Water Body: SB
Total Site Area: 22.48 ac
Drainage area: 4.34 ac
Total Impervious allowed on site: 149,411sf
TSS removal efficiency: 90%
Wet Pond Ave. Depth: 3.36 ft
Required Storage Volume: 8,756 cf
Provided Storage Volume: 28,156 cf
Required Surface Area:
10,629 sf
Provided Surface Area:
15,681 sf
Permanent Pool Volume:
52,688 cf
Permitted Forebay Volume:
10,487 cf
Controlling Orifice:
2 inch
Permanent Pool Elevation, FMSL
Temporary Storage Elevation
5.50 ft. MSL
3

State Stormwater Management Systems
Permit No. SW7080205
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 times provide the operation and maintenance necessary to assure the permitted
stormwater system functions at optimum efficiency. The approved Operation and Maintenance Plan must
be followed in its entirety and maintenance must occur at the scheduled intervals including, but not.limited
to:
a. Semiannual scheduled inspections (every 6 months).
b. Sediment removal.
C. Mowing and revegetation of slopes and the vegetated filter.
d. Immediate repair of eroded areas.
e. Maintenance of all slopes in accordance with approved plans and specifications.
f. Debris removal and unclogging of outlet structure, orifice device, flow spreader, catch basins and
piping.
g. Access to the outlet structure must be available at all times.
4. Records of maintenance activities must be kept and made available upon request to authorized personnel
of DWQ. The records will indicate the date, activity, name of person performing the work and what
actions were taken.
5. Decorative spray fountains will be allowed in the stormwater treatment system, 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 a fountain in pond #1 is 1/6 HP horsepower.
6. The facilities shall be constructed as shown on the approved plans. This permit shall become voidable
unless the facilities are constructed in accordance with the conditions of this permit, the approved plans
and specifications, and other supporting data.
7. 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.
8. 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.
9. Access to the stormwater facilities shall be maintained via appropriate easements at all times.
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:

State Stormwater Management Systems
Permit No. SW7080205
a. Any revision to any item shown on the approved plans, including the stormwater management
measures, built -upon area, details, etc.
b. Project name change.
C. Transfer of ownership.
d. Redesign or addition to the approved amount of built -upon area or to the drainage area.
e. Further subdivision, acquisition, lease or sale of all or part of the project area. The project area is
defined as all property owned by the permittee, for which Sedimentation and Erosion Control Plan
approval or a CAMA Major permit was sought.
f. Filling in, altering, or piping of any vegetative conveyance shown on the approved plan.
11. The permittee shall submit final site layout and grading plans for any permitted future areas shown on the
approved plans, prior to construction.
12. A copy of the approved plans and specifications shall be maintained on file by the Permittee at all times.
13. The Director may notify the permittee when the permitted site does not meet one or more of the minimum
requirements of the permit. Within the time frame specified in the notice, the permittee shall submit a
written time schedule to the Director for modifying the site to meet minimum requirements. The permittee
shall provide copies of revised plans and certification in writing to the Director that the changes have been
made.
III. GENERAL CONDITIONS
1. 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 formal permit transfer request to
the Division of Water Quality, accompanied by a completed name/ownership change form, 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. The permittee is responsible for
compliance with all permit conditions until such time as the Division approves the transfer request.
2. Failure to abide by the conditions and limitations contained in this permit may subject the Permittee to
enforcement action by the Division of Water Quality, in accordance with North Carolina General Statute
143-215.6A to 143-215.6C.
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) having 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 permittee grants DENR Staff permission to enter the property during normal business hours for the
purpose of inspecting all components of the permitted stormwater management facility.
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. 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.
8. Approved plans and specifications for this project are incorporated by reference and are enforceable
parts of the permit.
9. The permittee shall notify the Division any name, ownership or mailing address changes within 30 days.

State Stormwater Management Systems
Permit No. SW7080205
10. This permit shall be effective from the date of issuance until. 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 9th day of April 2008.
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
for Coleen H. Sullins, Director
Division of Water Quality
By Authority of the Environmental Management Commission
Permit Number SW7080205

State Stormwater Management Systems
Permit No. SW7080205
River Road Soccer Complex
Pasquotank County
Designer's Certification
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 is included in the Certification.
Noted deviations from approved plans and specification:
SEAL
Signature
Registration Number
Date

State Stormwater Management Systems
Permit No. SW7080205
Certification Requirements:
_1. The drainage area to the system contains approximately the permitted acreage.
2. The drainage area to the system contains no more than the permitted amount of built -upon area.
3. All the built -upon area associated with the project is graded such that the runoff drains to the
system.
_4. All roof drains are located such that the runoff is directed into the system.
5. The outlet/bypass structure elevations are per the approved plan.
_6. The outlet structure is located per the approved plans.
_7. Trash rack is provided on the outlet/bypass structure.
8. All slopes are grassed with permanent vegetation.
_9. Vegetated slopes are no steeper than 3:1.
_10. The inlets are located per the approved plans and do not cause short-circuiting of the system.
11. The permitted amounts of surface area and/or volume have been provided.
_12. Required drawdown devices are correctly sized per the approved plans.
13. All required design depths are provided.
14. All required parts of the system are provided, such as a vegetated shelf, and a forebay.
15. The required system dimensions are provided per the approved plans.
cc: NCDENR-DWQ Regional Office
Pasquotank County Building Inspections

F,r R5.
01tir RN
d DWQ USE ONLY
Date Received
Fee Paid
Permit Number
FEB 0 4 2-VU6
—As0,5-
e
DWQ-WARD State of North Carolina SWACK al6ln
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
This form may be photocopied for use as an original
I. GENERAL INFORMATION
1. Applicants name (specify the name of the corporation, individual, etc. who owns the project):
PaNuotank County
2. Print Owner/Signing Official's name and title (person legally responsible for facility and compliance):
Randy Keaton - Pasquotank County Manager
3. Mailing Address for person listed in item 2 above:
City:Ehzabeth City State:NC zip:27907
Phone: (252 ) 335-0865 Fax: (252 ) 335-0866
Email:N/A
4. Project Name (subdivision, facility, or establishment name -should be consistent with project name on plans,
specifications, letters, operation and maintenance agreements, etc.):
River Road Soccer Complex
Elizabeth City/Pasquotak County Parks and Recreation Department
5. Location of Project (street address):
City:Ehzabeth City
6. Directions to project (from nearest major intersection):
Take US 17 S to Halstead Blvd (Right) and make a Left on River Road.
7. Latitude:36°16'28.58"N Longitude:6'11'49.89"W of project
8. Contact person who can answer questions about the project
Name:leff Ashbaugh Telephone Number: `04 ) 521-9880
Email:jeff®sitesolutionspa.com
II. PERMIT INFORMATION:
1. Specify whether project is (check one):
►5 -
❑Renewal []Modification
Form SWU-101 Version 8.07 Page 1 of

2. If this application is being submitted as the result of a renewal or modification to an existing permit, list the
existing permit numberN/A and its issue date (if known)N/A
3. Specify the type of project (check one):
❑Low Density ®High Density ❑Redevelop ❑General Permit []Universal SMP ❑Other
4. Additional Project Requirements (check applicable blanks):
❑CAMA Major ®Sedimentation/Erosion Control ❑404/401 Permit ❑NPDES 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.
This project will treat water from the proposed parking and driveway which is considered to be a dense pocket of
impervious area It will go to a wet detention basin where it will be treated using the NCDENR standards for
a 90% TSS Pollutant Removal Efficiency
2. Stormwater runoff from this project drains to the Pasquotank River basin.
3. Total Site Area: 22.48 acres 4. Total Wetlands Area: 0 acres
5. 100' Wide Strip of Wetland Area: N/A acres (not applicable if no wetlands exist on site)
6. Total Project Area**:14.75 acres 7. Project Built Upon Area:15.26 %
8. How many drainage areas does the project have?2
9. 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
xDraixiage'Area
Receiving Stream Name
Pasquotank River
Pasquotank River
Stream Class & Index No.
SB 30-3-(12)
SB 30-3-(12)
Drainage Area (so
812394
189051
Existing Impervious* Area (sf)
19602
68389
Proposed Impervious*Area (sf)
1 23522
37898
% Impervious* Area (total)
5.31
56.22
LmperviousNSuif_ace A_ rea ;,=..� ,,
._.-Drainage,Area;l�
_ , Drainage;Area 2
On -site Buildings (so
On -site Streets (so
7406
On -site Parking (so
30492
On -site Sidewalks (so
23522
Other on -site (so
Off -site (so
Total (sf):
23522
37898
* Impervious area is defined as the built upon area including, but not limited to, buildings, roads, parking areas,
sidewalks, gravel areas, etc.
**Total project area shall be calculated based on the current policy regarding inclusion of wetlands in the built upon area
percentage calculation.
Form SWU-101 Version 8.07 Page 2 of 4

10. How was the off -site impervious area listed above derived?Based on field survey the area was drawn and
calculated in Autocad. This impervious area is from the adjoining (existing) roads and parking.
IV. DEED RESTRICTIONS AND PROTECTIVE COVENANTS
One of the following 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.
Form DRPC-1
High Density Commercial Subdivisions
Form DRPC-2
High Density Developments with Outparcels
Form DRPC-3
High Density Residential Subdivisions
Form DRPC-4
Low Density Commercial Subdivisions
Form DRPC-5
Low Density Residential Subdivisions
Form DRPC-6
Low Density Residential Subdivisions with Curb Outlets
By your signature below, you certify that the recorded deed restrictions and protective covenants for this
project shall include all the applicable items required in the above form, that the covenants will be binding
on all parties and persons claiming under them, that they will nm 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 SW401-Low Density
Low Density Supplement
Form SW401-Curb Outlet System
Curb Outlet System Supplement
Form SW401-Off-Site System
Off -Site System Supplement
Form SW401-Wet Detention Basin
Wet Detention Basin Supplement
Form SW401-Infiltration Basin
Infiltration Basin Supplement
Form SW401-Infiltration Trench
Underground Infiltration Trench Supplement
Form SW401-Bioretention Cell
Bioretention Cell Supplement
Form SW401-Level Spreader
Level Spreader/Filter Strip/Restored Riparian Buffer Supplement
Form SW401-Wetland
Constructed Wetland Supplement
Form SW401-Grassed Swale
Grassed Swale Supplement
Form SW401-Sand Filter
Sand Filter Supplement
Form SWU-101 Version 8.07 Page 3 of

VI. SUBMITTAL REQUIREMENTS
Only complete application packages will be accepted and reviewed by the Division of Water Quality (DWQ).
A complete package includes all of the items listed below. The complete application package should be
submitted to the appropriate DWQ Office. (Appropriate office may be found by locating project on the
interactive online map at http://h2o.enr.state.nc.us/su/msi maps.htm)
1. Please indicate that you have provided the following required information by initialing in the space provided
next to each item.
Initials
• Original and one copy of the Stormwater Management Permit Application Form
• Original and one copy of the Deed Restrictions & Protective Covenants Form
• Original of the applicable Supplement Form(s) and O&M agreement(s) for each BMP
• Permit application processing fee of $505 ($4,000 for Express) payable to NCDENR
• Calculations & detailed narrative description of stormwater treatment/management
• Copy of any applicable soil report
• Three copies of plans and specifications (sealed, signed & dated), 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):ieff Ashbaugh - Site Solutions
Mailing Address:2320 West Morehead Street
City:Charlotte State:NC Zip:28208
Phone: (704 ) 521-9880 Fax: [phone]
Email:jeff®sitesolutionspa.com
VIII. APPLICANT'S CERTIFICATION
1, (print or type name of person listed in General Information, item 2) Randy Keaton
certify that the information included on this permit application form is, to the best of my knowledge, correct and
that the project will be constructed in conformance with the approved plans, that the required deed restrictions
and protective covenants will be recorded, and that the proposed project complies with the requirements of 15A
NCAC 21-1.1000.
Date: /Z .i 1'd P
Form SWU-101 Version 8.07 Page 4 of

Permit No G W 10$0 %X05
(to be Provided by DWQ)
GIA
NCDENR
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
WET DETENTION BASIN SUPPLEMENT
This form must be filled out, printed and submitted
The Required Items Checklist (Part 111) must be printed, filled out and submitted along with all of the required information.
OF W A TF9
1 �o
m, y
0
II. PROJECT INFORMATION -- I
Project name
Contact person
Phone number
Date
Drainage area number
Ill. aDESIGN INFORMATION°
Site Characteristics
Drainage area
Impervious area
% Impervious
Design rainfall depth
Storage Volume: Non-SRWaters
Minimum volume required
Volume provided
Storage Volume: SR Waters
1-yr, 24-hr runoff depth
Pre -development 1-yr, 24-hr runoff
Post -development 1-yr, 24-hr runoff
Minimum volume required
Volume provided
Peak Flow Calculations
Is pre/post control of the 1-yr 24-hr 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
Basin Elevations
Basin bottom elevation
Sediment cleanout elevation
Bottom of shelf elevation
Permanent pool elevation
Top of shelf elevation
Temporary pool elevation
Volume and Surface Area Calculations
SAIDA ratio
Surface area at the bottom of shelf
Volume at the bottom of shelf
Permanent pool, surface area required
Permanent pool, surface area provided
Permanent pool volume
Average depth for SAIDA tables
Surface area at the lop of shelf
Volume at the top of shelf
River Road Soccer Complex
Jeff Ashbaugh
704-521-9880
1DI812007 (Revised 03-05-08)
Area 2
189,051 ft'
106,287 ftz
56.2213371 %
10 in
S'i 5. ft3
26,156 ft3
in
ft3
ft3
Its
ft3
Y
(Y or N)
3.1
in
0.6
(unitless)
0.6
(unitless)
01
in/hr
6.6
ft3/sec
12.1
ft3/sec
55
ft3/sec
-1.00 it
0.00 ft
450 ft
5.00 It
5.50 ft
6.50 ft
61511 ft3
OK
OK
Form SW401-Wet Detention easm-Rev.3 Parts I. & 11 Design Summary, Page 1 or 2

A
Permit No
(to be pmvided by OWO)
Forebay % of permanent pool volume
Temporary pool, surface area provided
Drawdown Calculations
Treatment volume drawdown time
Treatment volume discharge rate
Pre -development 1-yr, 24-hr discharge
Post -development 1-yr, 24-hrdischarge
Additional Information
Diameter of orifice
Design TSS removal
Basin side slopes
Vegetated shelf slope
Vegetated shelf width
Length of flowpath to width ratio
Length to width ratio
Trash rack for overflow & onfice?
Freeboard provided
Vegetated filter provided?
Recorded drainage easement provided?
Capures all runoff at ultimate build -out?
Drain mechanism for maintenance or emergencies
10,467
ft'
20
%
OK
21'010
ftz
3.64
days
OK
0.03
ft'/s
6.59
fl'/s
OK
0.07
RI/s
OK
1,50
in
90
%
_
3
1
10
:1
10
fl
36
:1
3.6
.1
Y
(Y or N)
1.1
it
Y
(YorN)
N
(Y or N)
Y
(Y or N)
OK
OK
OK
OK
OK
OK
OK
OK
Need a recorded drainage easement
OK
Fom SW401-Wet Detention Basin -Rev 3 Parts I & 11. Design Summary, Page 2 of 2

Permit Number: S W 7 W O-:,- vS
(to be provided by DWQ)
Drainage Area Number: #2
Wet Detention Basin Inspection and Maintenance Agreement
I will keep a maintenance record on this BMP. This maintenance record will be kept in a
log in a known set location. Any deficient BMP elements noted in the inspection will be
corrected, repaired or replaced immediately. These deficiencies can affect the integrity
of structures, safety of the public, and the removal efficiency of the BMP.
The wet detention basin system is defined as the wet detention basin,
pretreatment including forebays and the vegetated filter if one is provided.
This system (check one):
❑ does ® does not incorporate a vegetated filter at the outlet.
This system (check one):
❑ does ® does not incorporate pretreatment other than a forebay.
Important maintenance procedures:
— Immediately after the wet detention basin is established, the plants on the
vegetated shelf and perimeter of the basin should be watered twice weekly if
needed, until the plants become established (commonly six weeks).
— No portion of the wet detention pond should be fertilized after the first initial
fertilization that is required to establish the plants on the vegetated shelf.
— Stable groundcover should be maintained in the drainage area to reduce the
sediment load to the wet detention basin.
— If the basin must be drained for an emergency or to perform maintenance, the
flushing of sediment through the emergency drain should be minim;zed 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 inspection 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 time and a
one -tune fertilizer application.
Vegetation is too short or too
Maintain vegetation at a height of
long.
approximately six inches.
Form SW40I-Wet Detention Basin I&M-Rev.2

Permit Number:
(to be provided by DWQ)
Drainage Area Number: #2
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 plants rather than spraying.
The vegetated shelf
Best professional practices
Prune according to best professional
show that pruning is needed
practices
to maintain optimal plant
health.
Plants are dead, diseased or
Determine the source of the
dying.
problem: soils, hydrology, disease,
etc. Remedy the problem and
replace plants. Provide a one-time
fertilizer application to establish the
ground cover if a soil test indicates
it is necessary.
Weeds are present.
Remove the weeds, preferably by
hand. If pesticide is used, wipe it on
the plants rather than spraying.
The main treatment area
Sediment has accumulated to
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 I&M-Rev.2

Permit Number:
(to be provided by DWQ)
Drainage Area Number: #2
AMP element:
Potentialproblem:
How I will remediate theproblem:
The embankment
Shrubs have started to grow
Remove shrubs immediately.
on the embankment.
Evidence of muskrat or
Use traps to remove muskrats and
beaver activity is present.
consult a professional to remove
beavers.
A tree has started to grow on
Consult a dam safety specialist to
the embankment.
remove the tree.
An annual inspection by an
Make all needed repairs.
appropriate professional
shows that the embankment
needs repair.
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 55:0 feet in the main pond, the sediment
shall be removed.
When the permanent pool depth reads 33:0 feet in the forebay, the sediment
shall be removed.
Sediment Removal
2_0 I 1
-----------------
FOREBAY
BASIN DIAGRAM
(fill in the blanks)
Cft Min.
Sediment
Storage
Permanent Pool Elevation 5
Sediment Removal Elevation 0_0 Voluml
Bottom Elevation —1.0 J. 1-ft
MAIN POND
Storage
Form SW401-Wet Detention Basin 1&M-Rev.2

Permit Number:
(to be provided by DWQ)
I acknowledge and agree by my signature below that I am responsible for the
performance of the maintenance procedures listed above. I agree to notify DWQ of any
problems with the system or prior to any changes to the system or responsible party.
Project name: River Road Soccer Complex
BMP drainage area number:
Print name:
Title: Pasguotank County Manager
Address:PO Box 39, Elizabeth City, NC 27907
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,121 �A a Notary Public for the State of
YI&4 7�, County of do hereby certify that
tN.3 /iect,� personally appeared before me this
day of • C/ e)O�' , and acknowledge the due execution of the
forgoin wet detention basin maintenance requirements. Witness my hand and official
seal,
SEAL
My commission expires 5- /9-/;U
Form SW401-Wet Detention Basin I&M-Rev.2