SW7080935_CURRENT PERMIT_20090218

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
DOC TYPE
CURRENT PERMIT
❑ APPROVED PLANS
❑ HISTORICAL FILE
❑ COMPLIANCE EVALUATION INSPECTION
DOC DATE
_12v
YYYYMMDD

�A
AL-
MCDENR
North Carolina Department of Environment and
Division of Water Quality
Beverly Eaves Perdue
Governor
Coleen H. Sullins
Director
February 18, 2009
Charles R. Hall, Director of Design and Construction
Elizabeth City State University
Dixon Hall, Room 226, 1704 Weeksville Road, Campus
Elizabeth City, NC 27909
Dear Mr. Hall:
WaRD
Natural Resources
Dee Freeman
Subject: Stormwater Permit No. SW7080935
Elizabeth City State University — Roebuck
Parking Lot
High Density Project
Pasquotank County
The Washington Regional Office received a complete Stormwater Management
Permit Application for Elizabeth City State University — Roebuck Parking Lot on
September 29, 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 2H.1000. We are forwarding Permit No. SW7080935
dated February 18, 2009, for the construction of the subject project
This permit shall be effective from the date of issuance until February 18, 2019,
and shall be subject to the conditions and limitations as specified therein. Please
pay special attention to the Operation and Maintenance requirements in this
permit. Failure to establish an adequate system for operation and maintenance of
the stormwater management system will result in future compliance problems.
If any parts, requirements, or limitations contained in this permit are
unacceptable, you have the right to request an adjudicatory hearing upon written
request within thirty (30) days following receipt of this permit. This request must
be in the form of a written petition, conforming to Chapter 150E of the North
Carolina General Statutes, and filed with the Office of Administrative Hearings,
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 Samir Dumpor, or me at [phone].
North Carolina Division or Water Quality Internet wutiv ncwaterauality ore
943 Washington Square Mall Phone: [phone]
Washington, NC 27889 FAX [phone]
An Equal OpportunitylAffrmahve Action Employer - 50% Recycled110 % Post Consumer Paper
NorthCarolina.
Naturally

SincereI ,
Al Hodge ---
Regional Supervisor
Surface Water Protection Section
AH/sd: S:\WQS\STORMWAT\PERMIT\Elizabeth City State University —
Roebuck Parking Lot
cc: David Boyette, Stewart Engineering, Inc., 421 Fayetteville Street,
Suite 400, Raleigh, NC 27601
Pasquotank County Building Inspections
V/ Vashmgton Regional Office
Central Files

State Stormwater Management Systems
Permit No. SW7080935
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
Elizabeth City State University
Elizabeth City State University— Roebuck Parking Lot
Pasquotank County
FOR THE
construction, operation and maintenance of four underground infiltration trenches in
compliance with the provisions of 15A NCAC 2H .1000 (hereafter referred to as the
"stormwaterrules') 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 February 18, 2019, 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 1.6 on page 3 of this permit. The stormwater
control has been designed to handle the runoff from total of 62,762 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.
Page 2 of 8

State Stormwater Management Systems
Permit No. SW7080935
6. The following design criteria have been provided in the infiltration trenches and
must
be maintained at design condition:
Trench 1a
Trench 1b
a.
Drainage Area, ft2:
16,047
17,115
b.
Total Impervious Surfaces, ft2:
11,515
11,358
C.
Design Storm, inches:
1.0 (system designed
for 2.0")
d.
Trench Dimensions, L x W x H, ft:
53.53 x 24.72 x 17.72
e.
Single Module Dimensions:
26.97" x 16.06"
x 17.72"
f.
Number of Modules used:
440
440
g.
Bottom Elevation, FMSL:
6.0
6.0
h.
Bypass Weir Elevation, FMSL:
7.75
7.75
i.
Permitted Storage Volume, ft3:
1,857
1,857
j.
Type of Soil:
Chapanoke
Chapanoke
k.
Expected Infiltration Rate, in/hr:
13.40
13.40
I.
Seasonal High Water Table, FMSL:
4.0
4.0
M.
Time to Draw Down, hours:
1.32
1.32
n.
Receiving Stream/River Basin:
Charles Creek / Pasquotank
o.
Stream Index Number:
30-3-11
P.
Classification of Water Body:
'IC; Sw"
Trench 2
Trench 3
a.
Drainage Area, ft2:
32,048
22,051
b.
Total Impervious Surfaces, ft2:
22,429
17,460
C.
Design Storm, inches:
1.0 (system designed
for 2.0")
d.
Trench Dimensions, L x W x H, ft:
105,73 x 24.72
x 17.72
e.
Single Module Dimensions:
26.97" x 16.06"
x 17.72"
f.
Number of Modules used:
869
682
g.
Bottom Elevation, FMSL:
6.0
6.0
h.
Bypass Weir Elevation, FMSL:
7.75
7.75
i.
Permitted Storage Volume, ft3:
3,667
2,878
j.
Type of Soil:
Chapanoke
Chapanoke
Page 3 of 8

State Stormwater Management Systems
Permit No. SW7080935
k. Expected Infiltration Rate, in/hr:
Seasonal High Water Table, FMSL:
M. Time to Draw Down, hours:
Receiving Stream/River Basin:
o. Stream Index Number:
Classification of Water Body:
II. SCHEDULE OF COMPLIANCE
19.40 20.90
4.0 4.0
1.32 1.32
Charles Creek / Pasquotank
30-3-11
"C: Sw"
1. 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 bypass structure, filter media, flow
spreader, catch basins, piping and vegetated filter.
g. A clear access path to the bypass 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.
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.
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.
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.
Page 4 of 8

State Stormwater Management Systems ,
Permit No. SW7080935
Access to the stormwater facilities shall be maintained via appropriate
easements at all times.
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.
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.
10. The permittee shall submit final site layout and grading plans for any permitted
future areas shown on the approved plans, prior to construction.
11. A copy of the approved plans and specifications shall be maintained on file by
the Permittee at all times.
12. 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
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
Page 5 of 8

State Stormwater Management Systems
Permit No. SW7080935
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.
10. This permit shall be effective from the date of issuance until February 18, 2019.
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 18th day of February, 2009.
N TH AROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
A- LZi for
oleen H. Sullins, Director
Division of Water Quality
By Authority of the Environmental Management Commission
Permit No. SW7080935
Page 6 of 8

State Stormwater Management Systems
Permit No. SW7080935
Elizabeth City State University
Stormwater Permit No. SW7080935
Pasquotank Countv
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:
Signature
Registration Number
Date
SEAL
Page 7 of 8

State Stormwater Management Systems
Permit No. SW7080935
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 bypass structure elevations are per the approved plan.
6. The bypass structure is located per the approved plans.
7. A 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. All required design depths are provided.
13. All required parts of the system are provided.
14. The required system dimensions are provided per the approved plans.
cc: NCDENR-DWQ Regional Office
Pasquotank County Building Inspections

W0.1�J
DWQ USE ONLY
Date Received
Fee Paid
Permit Number
zq I zcce
SaS
Sw 70605B5
State of North Carolina �; `-I RV EVo
Department of Environment and Natural Resources
Division of Water Quality
FEB 1 0 2009
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
This form may be photocopied for use as an original DW rYdV AR0
I. GENERAL INFORMATION
1. Applicants name (specify the name of the corporation, individual, etc. who owns the project):
Elizabeth City State University
2. Print Owner/Signing Official's name and title (person legally responsible for facility and compliance):
Charles R. Hall Director of Design and Construction
3. Mailing Address for person listed in item 2 above:
Elizabeth City State University
City: Elizabeth City State:NC Zip:27909
Phone: (252 ) 335-3961 Fax: (252 ) 335-3960
Email:[e-mail]
4. Project Name (subdivision, facility, or establishment name - should be consistent with project name on plans,
specifications, letters, operation and maintenance agreements, etc.):
Elizabeth City State University - Roebuck Parking Lot
5. Location of Project (street address):
Herrington Road adjacent to Roebuck Staduim
City:Elizabeth City County:Pasquotank Zip:27909
6. Directions to project (from nearest major intersection):
From Halstead Road traveling east, turn left on Herrinnton Road. Parking lot is located directly west of
existing Roebuck Staduim on the ECSU campus.
7. Latitude:36° 17' 10.86" N Longitude:76° 13' 5.52" W of project
8. Contact person who can answer questions about the project:
Name:David Boyette, Stewart Engineering, Inc. Telephone Number: (919 ) 380-8750
Email:[e-mail]
IL PERMIT INFORMATION:
1. Specify whether project is (check one): ®New Renewal ❑Modification
Form SW U-101 Version 03 27.08 Page I of 4

2. if this application is being submitted as the result of a renewal or modification to an existing permit, list the
existing permit mamberN/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; information on required state permits can be
obtained by contacting the Customer Service Center at 1-877-623-6748):
❑CAMA Major ®Sedimentation/Erosion Control ❑404/401 Permit ❑NPDES Stormwater
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 .
Stormwater from the proposed parking lot will be captured and directed to one of three infiltration galleries
located below the proposed parking lot. Runoff greater than that produced by 1.5' of rainfall will by-pass the
infiltration galleries and be dischaged to a vegetated outlet.
2. Stormwater runoff from this project drains to the Pasquotank River basin.
3. Total Property Area: 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**:2.003 acres 7. Project Built Upon Area:71.92 %
8. How many drainage areas does the project have?4
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.
For high density projects, complete the table with one drainage area for each engineered stormwater device.
Basin Information
Drainage Area 1
Drainage Area 2
Receiving Stream Name
See Attached Spreadsheet.
Stream Class & Index No.
Total Drainage Area (so
On -site Drainage Area (so
Off -site Drainage Area (so
Existing Impervious* Area (so
Proposed Impervious*Area (so
% Impervious* Area (total)
Impervious* Surface Area
Drainage Area 1
Drainage Area 2
On -site Buildings (so
On -site Streets (so
On -site Parking (so
On -site Sidewalks (so
Other on -site (so
Off -site (so
Total (so:
FormSWU-101 Version03.27.08
Page 2 of 4

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. This is the area used to calculate percent project built upon area (BLIA).
10. How was the off -site impervious area listed above derived?Areas were calculated using field survey
information for existing conditions and design files (CADD) for proposed.
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. Forms can be
downloaded from httu://h2o.enr.state.nc.us/su/bmp forms.htm - deed restrictions.
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 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. Forms can be downloaded from htto://l12o.enr.state.nc.us/su/bml2 forms.htm.
Form SW401-Low Density
Form SW401-Curb Outlet System
Form SW401-Off-Site System
Form SW401-Wet Detention Basin
Form SW401-Infiltration Basin
Form SW401-Infiltration Trench
Form SW401-Bioretention Cell
Form SW401-Level Spreader
Form SW401-Wetland
Form SW401-Grassed Swale
Form SW401-Sand Filter
Form SW401-Permeable Pavement
Low Density Supplement
Curb Outlet System Supplement
Off -Site System Supplement
Wet Detention Basin Supplement
Infiltration Basin Supplement
Underground Infiltration Trench Supplement
Bioretention Cell Supplement
Level Spreader/Filter Strip/Restored Riparian Buffer Supplement
Constructed Wetland Supplement
Grassed Swale Supplement
Sand Filter Supplement
Permeable Pavement Supplement
Form SWU-101 Version 03.27 08 Page 3 of 4

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 h=://h2o.enr.state.nc.us/su/msi maos.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
/;P�
• Original and one copy of the Deed Restrictions & Protective Covenants Form (if
A-09
required as per Part IV above)
• Original of the applicable Supplement Form(s) and O&M agreement(s) for each BMP
A-2
• Permit application processing fee of $505 (Express: $4,000 for HD, $2,000 for LD)
payable to NCDENR
/� ?
• Calculations & detailed narrative description of stormwater treatment/management
/yZ
• Copy of any applicable soils report
• Two 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. (ex. designing engineer or firm)
Designated agent (individual or firm):David Boyette, PE - Stewart Engineering Inc.
Mailing Address:421 Fayetteville Street, Suite 400
City:Raleigh State:NC Zip:27601
Phone: (919 ) 380-8750 Fax: (919 ) 380-8752
Email:dboyette®stewart-en .cg om
VIII. APPLICANT'S CERTIFICATION
I, (pnnt or hype name of person listed in General Inforniation, item 2) Charles R. Hall, Dir. of Design and Construction
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 2H .1000.
Signature: (�j Date: Q,•,ZAS�5
Form SWU-101 Version 03.27.08 Page 5 of 4

is
STEWART
NCDENR DRAINAGE BASIN WORKSHEET
ECSU - Roebuck Parking Lot
Project: ECSU - Roebuck Parking Lot
Project No.: H7004
Date: 02.03.09
Basin Information
Drainage Area la
Drainage Area lb
Draina a Area 2
Drainage Area 3
Receiving Stream Name
Charles Creek
Charles Creek
Charles Creek
Charles Creek
Stream Class and Index No.
C• Sw - 30-3-11
C• Sw - 30-3-12
C• Sw - 30-3-11
C• Sw - 30-3-11
Total Drainage Area sf
16 047
17,115
32 048
22,051
On -site Drainage Area sf
16 047
17,115
32 048
22,051
Off -site Drainage Area sf
0
0
0
0
Existing Impervious Area sf
6,307
0
0
7,688
Pro osed Im ervious Area sf
11 515
11,358
22,429
17,460
Im ervious Area total
71.76%
66.36%
69.99%
79.18%
Impervious Surface Area
Drainage Area la
Drainage Area lb
Drainage Area 2
Drainage Area 3
On -site Buildings sf
0
0
0
0
On -site Streets s
0
0
0
0
On -site Parkin sf
11 515
11,358
22 429
17,460
On -site Sidewalks sf
0
0
0
0
Other on -site sf
0
0
0
0
Off -site sf
0
0
0
0
Total sf
11,515
11,358
22,429
17,460

Permit No.
(to be provided by DWO)
>�
NCDENR STORMWATER MANAGEMENT PERMIT APPLICATION FORM o Y
401 CERTIFICATION APPLICATION FORM
INFILTRATION TRENCH 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.
1.'PROJECT'INFORMATION
Project name 1ECSU - Roebuck Parking Lot
Contact person 'David Boyeae, PE - Stewart Engineering, Inc
Phone number ;[phone]
Date 02.03.09
Drainage area number 1 a
II. DESIGNINF-.ORMATION
Site Characteristics
Drainage area
16,047.00
'fl
Impervious area
11,515.00
f?
Percent impervious
71.8%
%
9��z
Design rainfall depth
2.00
in
Peak Flow Calculations
1-yr, 24-hr runoff depth
1-yr, 24-hr intensity
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
Storage Volume: Non -SR Waters
Minimum volume required
Volume provided
Storage Volume: SR Waters
1-yr, 24-hr rainfall depth
Pre -development 1-yr, 24-hr runoff
Post -development 1-yr, 24-hr runoff
Minimum volume required
Volume provided
Soils Report Summary
Soil type
Infiltration rate
SHWT elevation
Trench Design Parameters
Drawdown time
Perforated pipe diameter
Perforated pipe length
Number of laterals
Stone type (if used)
Stone void ratio
Stone is free of fines?
in
inthr
ftl/sec
fe/sec
I A33.00 ffa
1,857.00 fP°
in
W
ff3
ff3
e'
Chapanoke
13.40 in/hr -
4.00 fmsl
0.06
days
n/a
in
n/a
It
n/a
n/a
n/a
Y
(Y or N)
OK for non -SR waters
Loyd
OK
FEB 1 0 2009
f r
J,r ,a il/A„ iii
Fonn SW 401-Infiltration Trench-Rev.2 Parts I. & II. Design Summary - DA 1 a, Page 1 of 2

Permit
(to be provided by DWO)
Trench Elevations
Bottom elevation
Storage/overflow elevation
Top elevation
Trench Dimensions
Length (long dimension)
Width (shoe dimension)
Height (depth)
Additional Information
Total runoff volume captured by trench
Length of vegetative flier for overflow
Number of observation wells
Distance to structure
Distance from surface waters
Distance from water supply well(s)
Separation from impervious soil layer
Depth of naturally occuring soil above SHWT
Bottom covered with 4-in of clean sand?
Proposed drainage easement provided?
Capures all runoff at ultimate build -out?
Bypass provided for larger storms?
Trench wrapped with geotextile fabric?
Pretreatment device provided
6.00
fmsl OK
7.48
hnsl
7.75
fmsl
53.53 it
24.72 it
1.48 It OK
0.51
ac-in
OK
30.00
It
OK
2
OK
Ma
ft
OK
400.00
it
OK
n/a
It
OK
Iva
it
OK
2.00
It
OK
Y
(Y or N)
OK
n/a
(Y or N)
OK
Y
(Y or N)
OK
Y
(Y or N)
OK
Y
(Y or N)
OK
Form SW401-Infiltration Trench-Rev.2 Pans I. & 11. Design Summary- DA 1a, Page 2 of 2

Permit No.
(to be provided by DINO)
DA- I
Ilti. REQUIRED'ITEMS?CHECKLIST-
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.
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),
- Trench 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.
O
2. Partial plan (1' = 30' or larger) and details for the infiltration trench showing:
Bypass structure,
Maintenance access,
Basin bottom dimensions,
Basin cross-section with benchmark for sediment cleanout,
Flow distribution detail for inflow,
- Vegetated filter, and
- Pretreatment device.
G Soo
3. Section view of the infiltration basin (V = 20' or larger) showing:
Pretreatment and treatment areas, and
Inlet and outlet structures.
/%'7 CSoO 4. A table of elevations, areas, incremental volumes & accumulated volumes to verity the volume provided
5. A soils report that is based upon an actual field investigation, soil borings, and Infiltration tests. The
results of the soils report must be verified in the field by DWQ, by completing & submitting the soils
investigation request form. County soil maps are not an acceptable source of soils information.
CYO 6. A construction sequence that shows how the infitlration basin will be protected from sediment unbl the
entire drainage area is stabilized.
/0� Cvlc S 7. The supporting calculations.
4IV4-4� 8. A copy of the signed and notarized operation and maintenance (0&M) agreement.
#14 IJ14 9. A copy of the deed restrictions (if required).
Form SW401-Infiltration Trench-Rev.2 Part III. Required Checktist -DA 1, Page 1 of 1

_ Permit No.
(to be provided by DWQ)
®��
�pp W A JEgQ
►1/"11C►ID
STORMWATER MANAGEMENT PERMIT APPLICATION FORM s�1
401 CERTIFICATION APPLICATION FORM
INFILTRATION TRENCH 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
Project name
ECSU - Roebuck Parking Lot
Contact person
David Boyette, PE - Stewart Engineering, Inc
Phone number
[phone]
Date
02.03.09
Drainage area number
lb
II. DESIGN INFORMATION
Site Characteristics
Drainage area
17,115.00
it'
s "er•'�v" 'zC f��p
Impervious area
11,358.00
rye-"'�''''x`
Percent impervious
66.4%
%
Design rainfall depth
1.50
in
FEB 1 0 2009
Peak Flow Calculations
1-yr, 24-hr runoff depth
1-yr, 24-hr intensity
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
Storage Volume: Non -SR Waters
Minimum volume required
Volume provided
Storage Volume: SR Waters
1-yr, 24-hr rainfall depth
Pre -development 1-yr, 24-hr runoff
Post -development 1-yr, 24-hr runoff
Minimum volume required
Volume provided
Soils Report Summary
Soil type
Infiltration rate
SHWT elevation
Trench Design Parameters
Drawdown time
Perforated pipe diameter
Perforated pipe length
Number of laterals
Stone type (if used)
Stone void ratio
Stone is free of fines?
in
in/hr
ff'/sec
ft'/sec
ft'/sec
1,840.00 ft'
1,857.00 'ft'
in
it,
fe
ft'
ff3
Chapanoke
13.40 in/hr
4.00 fmsl
0.06 days
file in
nla ft
rua
n/a
fi/a
Y (YorN)
OK for non -SR waters
OK
C73
Form SW401-Infiltration Trench.Rev.2 Parts I. a If. Design Summary- DA tb, Page 1 of 2

Permit
fto be provided by OWO)
Trench Elevations
Bottom elevation
6.00
fmsl OK
Storage/overflow elevation
7.75
fmsl
Top elevation
7.48
fmsl
Trench Dimensions
Length (long dimenson)
53.53
it
Width (short dimension)
24.72
ft
Height (depth)
1.48
ft OK
Additional Information
Total runoff volume captured by trench
0.51
ac-in
OK
Length of vegetative filter for overflow
30.00
it
OK
Number of observation wells
2
OK
Distance to structure
n/a
ft
OK
Distance from surface waters
400.00
ft
OK
Distance from water supply well(s)
n/a
ft
OK
Separation from impervious soil layer
n/a
it
OK
Depth of naturally occuring soil above SHWT
2.00
it
OK
Bottom covered with 4-in of clean sand?
Y
(Y or N)
OK
Proposed drainage easement provided?
n/a
(Y or N)
OK
Capures all runoff at ultimate build -out?
Y
(Y or N)
OK
Bypass provided for larger storms?
Y
(Y or N)
OK
Trench wrapped with geotextile fabric?
Y
(Y or N)
OK
Pretreatment device provided
None
Form SW401-Infiltration Trench-Rev.2 Parts I. a II. Design Summary - DA tb, Page 2 of 2

Permit
(to be provided by DWG)
-_A-15
III. -REQUIRED ITEMS CHECKLIST " 5='
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.
Pagel Plan
Initials Sheet No.
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),
- Trench 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
C io O 2. Partial plan (1' = 30' or larger) and details for the infiltration trench showing:
- Bypass structure,
- Maintenance access,
- Basin bottom dimensions,
- Basin cross-section with benchmark for sediment cleanout,
- Flow distribution detail for inflow,
- Vegetated filter, and
- Pretreatment device.
CCOO 3. Section view of the infiltration basin (1" = 20' or larger) showing:
Pretreatment and treatment areas, and
Inlet and outlet structures.
C io O 4. A table of elevations, areas, incremental volumes & accumulated volumes to verity the volume provided.
5. A soils report that is based upon an actual field investigation, soil borings, and infiltration tests. The
results of the soils report must be verified in the field by DWO, by completing & submitting the soils
investigation request form. County soil maps are not an acceptable source of soils information.
e9W U 6. A construction sequence that shows how the infiltration basin will be protected from sediment until the
entire drainage area is stabilized.
/I--Ir && S 7. The supporting calculations.
94x�_/ 8. A copy of the signed and notarized operation and maintenance (0&M) agreement.
VI9 9. A copy of the deed restrictions (if required).
Form SW401-Infiltration Trench -Rev 2 Part III Required Checklist -DA 1, Page 1 of 1

Permit No.
(to be provided by DWQ)
of warEgo
STORMWATER MANAGEMENT PERMIT APPLICATION FORM y
NCDENR 401 CERTIFICATION APPLICATION FORM o
INFILTRATION TRENCH SUPPLEMENT
This form must be filled out, printed and submitted.
The Required Items Checklist (Part Ill) must be printed, filled out and submitted along with all of the required information.
rrolect name
Contact person
Phone number
Date
Drainage area number
ECSU - Roebuck Parking Lot
David 8oyette, PE - Stewart Engineering, Inc
2
II. DESIGNJNF,ORMATION
Site Characteristics
Drainage area
32,048.00
ttz
Impervious area
22,429.00
fh
n
Percent impervious
70.0%
°k
Design rainfall depth
1.50
in
Peak Flow Calculations
FEB 1 0 2009
1-yr, 24-hr runoff depth
in
1-yr, 24-hr intensity
irdhr
: i
Pre -development 1-yr, 24-hr peak flow
ft3/sec
+1
Post -development 1-yr, 24-hr peak flow
ft3/sec
Pre/Post 1-yr, 24-hr peak flow control
N3/sec
Storage Volume: Non -SR Waters
Minimum volume required
Volume provided
Storage Volume: SR Waters
1-yr, 24-hr rainfall depth
Pre -development 1-yr, 24-hr runoff
Post -development 1-yr, 24-hr runoff
Minimum volume required
Volume provided
Soils Report Summary
Soil type
Infiltration rate
SHWT elevation
Trench Design Parameters
Drawdown time
Perforated pipe diameter
Perforated pipe length
Number of laterals
Stone type (it used)
Stone void ratio
Stone is free of fines?
3,666.00 ff3
3,667.00 it' OK for non -SR waters
in
ft'
ft
fe
fts
Chapanoke
19.40 in/hr
4.00 fmsl
0.08
days OK
n/a
in
n/a
it
n/a
n/a
n/a
Y
(Y or N) OK
Form SW401-Infiltration Trench-Rev.2 Pans I. & II. Design Summary - DA 2, Page 1 of 2

Permit No.
(to be provided by DWO)
Trench Elevations
Bottom elevation
6.00
fmsl OK
Storage/overflow elevation
7.75
fmsl
Top elevation
7.48
'fmsl
Trench Dimensions
Length (long dimension)
105.73
'ft
Width (shod dimension)
24.72
'ft
Height (depth)
1.48
ft - OK
Additional Information
Total runoff volume captured by trench
1.01
ac-in
OK
Length of vegetative filter for overflow
30.00
It
OK
Number of observation wells
2
OK
Distance to structure
n/a
,ft
OK
Distance from surface waters
400.00
It
OK
Distance from water supply well(s)
n/a
ft
OK
Separation from impervious soil layer
n/a
ft
OK
Depth of naturally occuring soil above SHWT
2.00
Ift
OK
Bottom covered with 4-in of clean sand?
Y
(Y or N)
OK
Proposed drainage easement provided?
n/a
(Y or N)
OK
Capures all runoff at ultimate build -out?
Y
(Y or N)
OK
Bypass provided for larger storms?
Y
(Y or N)
OK
Trench wrapped with geotextile fabric?
Y
(Y or N)
OK
Pretreatment device provided
None
Form SW401-infiltration Trench-Rev.2 Pads I. & U. Design Summary- DA 2, Page 2 of 2

Permit
(to be provided by DWD)
IIII: REQUIRED ITEMS.CHECKLISL=.'
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.
Paget Plan
Initials
Sheet No.
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),
- Trench 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.
2. Partial plan (1' = 30' or larger) and details for the infiltration trench showing:
- Bypass structure,
- Maintenance access,
- Basin bottom dimensions,
- Basin cross-section with benchmark for sediment cleanout,
- Flow distribution detail for inflow,
- Vegetated filter, and
- Pretreatment device.
3. Section view of the infiltration basin (1' = 20' or larger) showing:
- Pretreatment and treatment areas, and
- Inlet and outlet structures.
4. A table of elevations, areas, incremental volumes & accumulated volumes to verify the volume provided.
5. A soils report that is based upon an actual field investigation, soil borings, and infiltration tests. The
results of the soils report must be verified in the field by DWO, by completing & submitting the soils
Investigation request form. County soil maps are not an acceptable source of soils information.
'7
C 4'00
6. A construction sequence that shows how the Infiltration basin will be protected from sediment until the
entire drainage area is stabilized.
e'a%S 7. The supporting calculations.
4A4--'� 8. A copy of the signed and notarized operation and maintenance (0&M) agreement.
NfAT 9. A copy of the deed restrictions (if required).
Form SW401-Infiltration Trench -Rev 2 Part III. Required Checklist -DA 1, Page 1 of 1

Permit
(to be provided by DINO)
2of WAiFgO`
AMA m
STORMWATER MANAGEMENT PERMIT APPLICATION FORM ��C NCDENR 401 CERTIFICATION APPLICATION FORM
INFILTRATION TRENCH SUPPLEMENT
This torn must be filled out, printed and submitted.
The Required Items Checklist (Part III) must be printed, filled out and submitted along with all of the required information.
Project name ECSU - Roebuck Parking Lot
Contact person David Boyette, PE - Stewart Engineering, Inc
Phone number [phone]
Date 02.03.09
Drainage area number 3
Site Characteristics
Drainage area
Impervious area
Percent impervious
Design rainfall depth
Peak Flow Calculations
1-yr, 24-hr runoff depth
1-yr, 24-hr intensity
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
Storage Volume: Non -SR Waters
Minimum volume required
Volume provided
Storage Volume: SR Waters
1-yr, 24-hr rainfall depth
Pre -development 1-yr, 24-hr runoff
Post -development 1-yr, 24-hr runoff
Minimum volume required
Volume provided
Soils Report Summary
Soil type
Infiltration rate
SHWT elevation
Trench Design Parameters
Drawdown time
Perforated pipe diameter
Perforated pipe length
Number of laterals
Stone type (it usedf
Stone void ratio
Stone is free of fines?
22,051.00
fe
17,460.00
fe ,
79.2%
%
1.50
in
in
irllhr
1t3/SeC
felsec
fte/sec
2,864.00 ft
2,878.00 ft3
in
fe
,ft3
Chapanoke
20.90 in/hr
4.00 hnsl
0.04 days
n/a
in
n/a
It
nia
n/a
OK for non -SR waters
OK
wa
Y (Y or N) OK
i T mE'
II I
n'l1 A, Wt6>L�
FEB 1 0 2009
Form SW401-Infiltration Trench-Rev.2 Pans I. a If. Design Summary- DA 3, Page 1 of 2

Permit No.
(fobs provided by DWO)
Trench Elevations
Bottom elevation
6.00
hnsl OK
Storage/overflow elevation
7.75
fmsl
Top elevation
7.48
fmsl
Trench Dimensions
Length (long dimension)
1 82.98
.ff
Width (short dimension)
24.72
ft
Height (depth)
1.48
ft OK
Additional Information
Total runoff volume raptured by trench
0.79
ac-in
OK
Length of vegetative filter for overflow
400.00
it
OK
Number of observation wells
2
OK
Distance to structure
n/a
it
OK
Distance from surface waters
400.00
it
OK
Distance from water supply well(s)
n/a
it
OK
Separation from impervious soil layer
n/a
ft
OK
Depth of naturally occuring soil above SHWT
2.00
ft
OK
Bottom covered with 4-in of clean sand?
Y
(Y or N)
OK
Proposed drainage easement provided?
n/a
(Y or N)
OK
Capures all runoff at ultimate build -out?
Y
(Y or N)
OK
Bypass provided for larger stones?
Y
(Y or N)
OK
Trench wrapped with geotextile fabric?
Y
(Y or N)_
OK
Pretreatment device provided
None
Fomn SW401-Infiltration Trench-Rev.2 Parts I & It. Design Summary- DA 3, Page 2 of 2

Permit
(to be provided by DWO)
oA-3
III. REQUIRED ITEMS CHECKLIST
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.
411
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),
- Trench 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.
C Wo
2. Partial plan (1' = 30' or larger) and details for the Infiltration trench showing:
- Bypass structure,
- Maintenance access,
- Basin bottom dimensions,
- Basin cross-section with benchmark for sediment cleanout,
- Flow distribution detail for inflow,
- Vegetated filter, and
- Pretreatment device.
3. Section view of the infiltration basin (1' = 20' or larger) showing:
- Pretreatment and treatment areas, and
/j,,.�,
- Inlet and outlet structures.
4. A table of elevations, areas, incremental volumes & accumulated volumes to verify the volume provided.
k S 5. A soils report that is based upon an actual field investigation, soil borings, and infiltration tests. The
results of the soils report must be verified in the field by DWO, by completing & submitting the soils
investigation request form. County soil maps are not an acceptable source of soils information.
6. A construction sequence that shows how the inftlration basin will be protected from sediment until the
entire drainage area is stabilized.
7. The supporting calculations.
i 8. A copy of the signed and notarized operation and maintenance (0&M) agreement.
9. A copy of the deed restrictions (if required).
Form SW401-Infiltration Trench-Rev.2 Part III Required Checklist -DA 1, Page 1 of 1

MEW
SEP 2 9 2008
Permit Number:
(to be provided by DWQ)
Drainage Area Number:
*e- li filtration Trench 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 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.
Important maintenance procedures
— The drainage area of the infiltration trench will be carefully managed to reduce
the sediment load to the sand filter.
— The water level in the monitoring wells will be recorded once a month and after
every storm event greater than 1.0 inches (or 1.5 inches if in a Coastal County).
The infiltration trench will be inspected once a quarter 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 will be kept in a known set location and will 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 grass filter strip or
Areas of bare soil and/or
Regrade the soil if necessary to
other pretreatment area
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.
Sediment has accumulated to
Search for the source of the
a depth of greater than six
sediment and remedy the problem if
inches.
possible. Remove the sediment and
dispose of it in a location where it
will not cause impacts to streams or
the BMP.
The flow diversion
The structure is clogged.
Unclog the conveyance and dispose
structure (if applicable)
of any sediment off -site.
The structure is damaged.
Make any necessary repairs or
replace if damage is too large for
repair.
Form SW401-Infiltration Trench O&M-Rev.3 Page I of 3

BMP element:
Potentialproblem:
How I will remediate theproblem:
The trench
Water is ponding on the
Remove the accumulated sediment
surface for more than 24
from the infiltration system and
hours after a storm.
dispose in a location that will not
impact a stream or the BMP.
The depth in the trench is
Remove the accumulated sediment
reduced to 75% of the original
from the infiltration system and
design depth.
dispose in a location that will not
impact a stream or the BMP.
Grass or other plants are
Remove the plants, preferably by
growing on the surface of the
hand. If pesticide is used, wipe it on
trench.
the plants rather than spraying.
The observation well(s)
The water table is within one
Contact the D WQ Stormwater Unit
foot of the bottom of the
immediately at 919-733-5083.
system for a period of three
consecutive months.
The outflow pipe is clogged.
Provide additional erosion
protection such as reinforced turf
matting or riprap if needed to
prevent future erosion problems.
The outflow pipe is damaged.
Repair or replace the pipe.
The emergency overflow
Erosion or other signs of
The emergency overflow berm will
berm
damage have occurred at the
be repaired or replaced if beyond
outlet.
repair.
The receiving water
Erosion or other signs of
Contact the NC Division of Water
damage have occurred at the
Quality 401 Oversight Unit at 919-
outlet.
733-1786.
Form SW40 I -Infiltration Trench O&M-Rev.3 Page 2 of 3

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 fisted 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:ECSU - Roebuck Parking Lot
BMP drainage area
Print name:Charles R. Hall
Title:Director of Design and Construction
Address:1704 Weeksville Road, Dixon Hall Room 226, Elizabeth City NC 27909
W
A
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.
1,IR Gt a Notary Public for the State of
Nor l�Cckm I : County of i i l� IcKk - do hereby certify that
L9d1"epersonally appeared before me this 0z"
day of �?m8 , and acknowledge the due execution of the
forgoing infiltration trench maintenance requirements. Witness my hand and official
seal,' �
SEAL
My commission expires_ j (Q xc� ds y 1r�tl
Form SW401-Infiltration Trench O&M-Rev.3 Page 3 of 3

SEP 2 9 2008
Permit Number:
(to be provided by DWQ)
fjylyQ-Drainage Area Number:
Infiltration Trench 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 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.
Important maintenance procedures:
— The drainage area of the infiltration trench will be carefully managed to reduce
the sediment load to the sand filter.
— The water level in the monitoring wells will be recorded once a month and after
every storm event greater than 1.0 inches (or 1.5 inches if in a Coastal County).
The infiltration trench will be inspected once a quarter 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 will be kept in a known set location and will 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 grass filter strip or
Areas of bare soil and/or
Regrade the soil if necessary to
other pretreatment area
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.
Sediment has accumulated to
Search for the source of the
a depth of greater than six
sediment and remedy the problem if
inches.
possible. Remove the sediment and
dispose of it in a location where it
will not cause impacts to streams or
the BMP.
The flow diversion
The structure is clogged.
Unclog the conveyance and dispose
structure (if applicable)
of any sediment off -site.
The structure is damaged.
Make any necessary repairs or
replace if damage is too large for
repair.
Form SW401-Infiltration Trench O&M-Rev.3 Page I of 3

BMP element:
Potentialproblem:
How I will remediate theproblem:
The trench
Water is ponding on the
Remove the accumulated sediment
surface for more than 24
from the infiltration system and
hours after a storm.
dispose in a location that will not
impact a stream or the BMP.
The depth in the trench is
Remove the accumulated sediment
reduced to 75% of the original
from the infiltration system and
design depth.
dispose in a location that will not
impact a stream or the BMP.
Grass or other plants are
Remove the plants, preferably by
growing on the surface of the
hand. If pesticide is used, wipe it on
trench.
the plants rather than spraying.
The observation well(s)
The water table is within one
Contact the DWQ Stormwater Unit
foot of the bottom of the
immediately at 919-733-5083.
system for a period of three
consecutive months.
The outflow pipe is clogged.
Provide additional erosion
protection such as reinforced turf
matting or riprap if needed to
prevent future erosionproblems.
The outflow pipe is damaged.
Repair or replace the pipe.
The emergency overflow
Erosion or other signs of
The emergency overflow berm will
berm
damage have occurred at the
be repaired or replaced if beyond
outlet.
repair.
The receiving water
Erosion or other signs of
Contact the NC Division of Water
damage have occurred at the
Quality 401 Oversight Unit at 919-
outlet.
1 733-1786.
Form SW401-Infiltration Trench O&M-Rev.3 Page 2 of 3

Permit
(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:ECSU - Roebuck Parking Lot
BMP drainage area number:
Print name:Charles R. Hall
Title:Director of Design and Construction
Address:1704 Weeksville Road, Dixon Hall Room 226, Elizabeth City, NC 27909
Note: The legally responsible parry 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, -PaUa (', . �Dla)2. , a Notary Public for the State of
i�F.Cix1 oLit�c. County ofdo hereby certify that
2S Httu_ personally appeared before me this
day of aOQC 9 , and acknowledge the due execution of the
forgoing infiltration trench ^ maintenance requirements. Witness my hand and official
seal, �.:&U —
I
SEAL
My commission expires oZ5��11
Form SW401-Infiltration Trench O&M-Rev.3 Page 3 of 3

SEP 2 9 2008 Permit Number:
(to be provided by DWQ)
Drainage Area Number:
��4'��<'Infiltration Trench 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 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.
Important maintenance procedures:
— The drainage area of the infiltration trench will be carefully managed to reduce
the sediment load to the sand filter.
— The water level in the monitoring wells will be recorded once a month and after
every storm event greater than 1.0 inches (or 1.5 inches if in a Coastal County).
The infiltration trench will be inspected once a quarter 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 will be kept in a known set location and will 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 grass filter strip or
Areas of bare soil and/or
Regrade the soil if necessary to
other pretreatment area
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.
Sediment has accumulated to
Search for the source of the
a depth of greater than six
sediment and remedy the problem if
inches.
possible. Remove the sediment and
dispose of it in a location where it
will not cause impacts to streams or
the BMP.
The flow diversion
The structure is clogged.
Unclog the conveyance and dispose
structure (if applicable)
of any sediment off -site.
The structure is damaged.
Make any necessary repairs or
replace if damage is too large for
repair.
Form SW401-Infiltration Trench O&M-Rev.3 Page 1 of 3

BMP element:
Potentialproblem:
How I will remediate theproblem:
The trench
Water is ponding on the
Remove the accumulated sediment
surface for more than 24
from the infiltration system and
hours after a storm.
dispose in a location that will not
impact a stream or the BMP.
The depth in the trench is
Remove the accumulated sediment
reduced to 75% of the original
from the infiltration system and
design depth.
dispose in a location that will not
impact a stream or the BMP.
Grass or other plants are
Remove the plants, preferably by
growing on the surface of the
hand. If pesticide is used, wipe it on
trench.
the plants rather than spraying.
The observation well(s)
The water table is within one
Contact the DWQ Stormwater Unit
foot of the bottom of the
immediately at 919-733-5083.
system for a period of three
consecutive months.
The outflow pipe is clogged.
Provide additional erosion
protection such as reinforced turf
matting or riprap if needed to
prevent future erosion problems.
The outflow pipe is damaged.
Repair or replace the pipe.
The emergency overflow
Erosion or other signs of
The emergency overflow berm will
berm
damage have occurred at the
be repaired or replaced if beyond
outlet.
repair.
The receiving water
Erosion or other signs of
Contact the NC Division of Water
damage have occurred at the
Quality 401 Oversight Unit at 919-
outlet.
733-1786.
Form SW401-Infiltration Trench O&M-Rev.3
Page 2 of 3

SEP 2 9 2008 Permit
(to be provided by DWQ)
�g'�(. UVA�-���
1 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:ECSU - Roebuck Parking Lot
BMP drainage area number:
Print name:Charles R. Hall
Title:Director of Design and Construction
Address:1704 Weeksville Road, Dixon Hall Room 226, Elizabeth City, NC 27909
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, 3xta(Q r, &Lop a Notary Public for the State of
N)Cp.Lk Cc" Um, County of do hereby certify that
C%[tt (PS I'Z . %loll personally appeared before me this
day of ypr„�y �, and acknowledge the due execution of the
forgoing infiltration trench maintenance requirements. Witness my hand and official
seal, (2tt Y �Gi
SEAL
My commission expires }- " -2S t iI (
Form SW401-Infiltration Trench O&M-Rev.3 Page 3 of 3

Permit Number:
(to be provided by DWQ)
Drainage Area Number:
Infiltration Trench 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 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.
Important maintenance procedures:
— The drainage area of the infiltration trench will be carefully managed to reduce
the sediment load to the sand filter.
— The water level in the monitoring wells will be recorded once a month and after
every storm event greater than 1.0 inches (or 1.5 inches if in a Coastal County).
The infiltration trench will be inspected once a quarter 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 will be kept in a known set location and will 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 grass filter strip or
Areas of bare soil and/or
Regrade the soil if necessary to
other pretreatment area
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.
Sediment has accumulated to
Search for the source of the
a depth of greater than six
sediment and remedy the problem if
inches.
possible. Remove the sediment and
dispose of it in a location where it
will not cause impacts to streams or
the BMP.
The flow diversion
The structure is clogged.
Unclog the conveyance and dispose
structure (if applicable)
of any sediment off -site.
The structure is damaged.
Make any necessary repairs or
replace if damage is too large for
repair.
Form SW40 1 -Infiltration Trench O&M-Rev.3 Page 1 of 3

BMP element:
Potentialproblem:
How I will remediate theproblem:
The trench
Water is pending on the
Remove the accumulated sediment
surface for more than 24
from the infiltration system and
hours after a storm.
dispose in a location that will not
impact a stream or the BMP.
The depth in the trench is
Remove the accumulated sediment
reduced to 75% of the original
from the infiltration system and
design depth.
dispose in a location that will not
impact a stream or the BMP.
Grass or other plants are
Remove the plants, preferably by
growing on the surface of the
hand. If pesticide is used, wipe it on
trench.
the plants rather than spraying.
The observation well(s)
The water table is within one
Contact the DWQ Stormwater Unit
foot of the bottom of the
immediately at 919-733-5083.
system for a period of three
consecutive months.
The outflow pipe is clogged.
Provide additional erosion
protection such as reinforced turf
matting or riprap if needed to
prevent future erosionproblems.
The outflow pipe is damaged.
Repair or replace the pipe.
The emergency overflow
Erosion or other signs of
The emergency overflow berm will
berm
damage have occurred at the
be repaired or replaced if beyond
outlet.
repair.
The receiving water
Erosion or other signs of
Contact the NC Division of Water
damage have occurred at the
Quality 401 Oversight Unit at 919-
outlet.
733-1786.
Form SW401-Infiltration Trench O&M-Rev.3 Page 2 of 3

Permit
(to be provided by DWQ)
I acknowledge and agree by my signature below that 1 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:ECSU - Roebuck Parking Lot
BMP drainage area number:
Print name:Charles R. Hall
Title:Director of Design and Construction
Address:1704 Weeksville Road, Dixon Hall Room 226, Elizabeth City, NC 27909
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.
a Notary Public for the State of
h,yp•-`? (—oLvo rct_ , County of do hereby certify that
i1�ct�lPS • iir} �� personally appeared before me this
day of 5gf!!..fPr- , and acknowledge the due execution of the
forgoing infiltration trench maintenance requirements. Witness my hand and official
seal, %OG Ja :8b z
I -
i
SEAL
My commission expires aG o751ei d It
Form SW401-Infiltration Trench O&M-Rev.3
Page 3 of 3