SW7080711_CURRENT PERMIT_20080724

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SW %�,'y�7��
DOC TYPE
CURRENT PERMIT
APPROVED PLANS
❑ HISTORICAL FILE
❑ COMPLIANCE EVALUATION INSPECTION
DOC DATE
YYYYMMDD

Michael F Easles:"Governor
William G. Ross Jr., Secretary
rNorth
Carolina Department of Environment and Natural Resources
<
Coleen H. Sullins, Director
Division of Water Quality
July 24, 2008
Mr. Richard C. Olson, City Manager
City of Elizabeth City
PO Box 347
Elizabeth City, NC 27907
Subject: Stormwater Permit No. SW7080711
Elizabeth City—Pasquotank Aviation Research
& Development Commerce Park, Phase 1
High Density Project
Pasquotank County
Dear Mr. Olson:
The Washington Regional Office received a complete Stormwater Management Permit Application
for Elizabeth City—Pasquotank Aviation Research & Development Commerce Park, Phase 1 on
July 18, 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. SW7080711 dated July 24, 2008, for the construction of the subject
project. �z / 3 0 h-- I
This permit shall be effective from the date of issuance until July 24, 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
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
Scott Vinson, or me at [phone].
incelrelly,
A—A�To&"�
Regional Supervisor
Surface Water Protection Section
AH./sv: - S:\WQS\STORMWATER\PERMIT\SW7080711
cc: Sean Robey, PE
Pasquotank County Building Inspections
Di 'sion of Coastal Management
rdashing+on Regional Office
Central Files No�cami na
Aaturally
N01111 Carolina Dn^sion of Water Quality Washington Regional Office Phone [phone] FAX [phone] Customer Semler
Intemet: )Mvi,ncwaterquality or 943 Washington Square Mall, Washington, NC 27889 1-877-623-6748
An Equal Opportunay/Affirmative Action Employer - 50% Recycled/10% Post Consumer Paper

State Stormwater Management Systems
Permit No. SW7080711
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
City of Elizabeth City
Elizabeth City—Pasquotank Aviation Research & Development
Commerce Park, Phase 1
Pasquotank County
FOR THE
construction, operation and maintenance of four (4) wet detention ponds 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 July 24, 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.
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. SW7080711
6. The following design criteria have been provided in the wet detention pond and
must be maintained at design condition:
a.
Drainage Area, acres:
1,302,200 - Pond A
775,884 -Pond B
273,208 - Pond C
629,411 -Pond D
b.
Total Impervious Surfaces, ft2:
865,849 - Pond A
533,115 - Pond B
86,872 -Pond C
403,266 - Pond D
C.
Design Storm, inches:
1" for all four ponds
d.
Average Pond Depth, feet:
3.93 - Pond A
5.00 - Pond B
4.00 - Pond C
5.50 - Pond D
e.
TSS removal efficiency:
90% for all four ponds
f.
Permanent Pool Elevation, FMSL:
2.50 for all four ponds
g.
Permanent Pool Surface Area, ft2:
110,508 - Pond A
49,234 - Pond B
11,126 -Pond C
28,597 -Pond D
h.
Permitted Storage Volume, ft3:
117,960 - Pond A
50,431 - Pond B
16,802 -Pond C
40,090 -Pond D
i.
Tempary Storage Elevation, FMSL:
3.41 - Pond A
3.45 - Pond B
3.77 - Pond C
3.75 - Pond D
j.
Controlling Orifice:
4.0 "0 pipe - Pond A
3.75 "0 pipe - Pond B
1.50 "0 pipe - Pond C
3.00 "0 pipe - Pond D
k.
Receiving Stream/River Basin:
Pasquotank River / Pasquotank
I.
Stream Index Number:
30 — 3 — (12)
M.
Classification of Water Body:
"SB"
II. SCHEDULE OF COMPLIANCE
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.
Page 3 of 8

State Stormwater Management Systems
Permit No. SW7080711
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.
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 this pond is Pond A — 1 hp,
Pond B — 3/4hp, Pond C — 1 /8hp and Pond D — 112 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.
Page 4 of 8

State Stormwater Management Systems
Permit No. SV 7080711
10. The permittee shall submit to the Director and shall have received approval for
revised plans, specifications, and calculations prior to construction, for any
modification to the approved plans, including, but not limited to, those listed
below:
a. Any revision to any item shown on the approved plans, including the
stormwater management measures, built -upon area, details, etc.
b. Project name change.
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.
14. This permit is not affective until such time as this Division and the Army Corp of
Engineers have approved all impacts to the receiving stream as shown on the
approved plans.
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.
Page 5 of 8

State Stormwater Management Systems
Permit No. SW7080711
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 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 July 24, 2018.
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 24th day of July, 2008.
CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
for
Uoleen H. Sullins, Uirector
Division of Water Quality
By Authority of the Environmental Management Commission
Permit No. SW7080711
Page 6 of 8

State Stormwater Management Systems
Permit No. SV 7080711
Elizabeth City—Pasquotank
Aviation Research & Development
Commerce Park, Phase 1
Stormwater Permit No. SW7080711
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:
Signature
Registration Number
Date
SEAL
Page 7 of 8

State Stormwater Management Systems
Permit No. SV 7080711
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
Page 8 of 8

Elizabeth City—Pasquotank
Aviation Research & Development
Commerce Park, Phase 1
Stormwater Permit No. SW7080711
Pasquotank Countv
Designer's Certification
State Stormwater Management Systems
Permit No. SW7080711
RECEIVED
JUL 2 2 2009
I, �'1 C • �J2 , as a duly registered QI eS(-' VY� eVlG lvitPY
in the State of North Carolina, havi g been authorized to observe (periodically/
full time) the construction of the project,
U✓l�CZL �
(Project)
for C&� oP Eli Zo-%eih Cyr (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.
Noir:d deviations from approved plans and specification:
Signature
Registration r lBSd
Date
Page 7 of 8

i
ate0=19LY-
Keceived
Pee Faid
Fermit Number
7-t
P-OV
c
5
0
1(
State of North Carolina
( h Department of Environment and Natural Resources
Division of Water Quality
JUL 18 20 fiTORMWATER MANAGEMENT PERMIT APPLICATION FORM ,nr A D
This form may be photocopied for use as an original V"
I GENERAL INFORMATION 140
1. Applicants name (specify the name of the corporation, individual, etc. who owns the project):
2. Print Owner/Signing Official's name and title (person legally responsible for facility and compliance):
Richard C. Olson, City Manager
3. Mailing Address for person listed in item 2 above:
PO Box 347
Elizabeth City
Phone: ( 252 ) 337-6864
Email:[e-mail]
NC
27907
Fax: ( 252 ) 335-2503
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 - Pasquotank AviatiOnnResearch and Development
Commerce Park, Phase 1
5. Location of Project (street address):
1049 Consolidated Road
City: Elizabeth City County: Pasquotank
6. Directions to project (from nearest major intersection):
7909
From the intersection of 17 business and IS 344, travel souttk-ast on tr 344/tr 34 unmximatel y 6 mi 1 es
to SR 1131(airport at intersection). TLan on SR 1131, proiect is 1 mile cn the right.
7. Latitude: 36 ° 15 ' 9 "N Longitude: 76 ° 10 4 " W of project
8. Contact person who can answer questions about the project:
Name: Sean C. Robey Telephone Number: ( 252 ) 335-1888
Email:[e-mail]
11. PERMIT INFORMATION:
1. Specify whether project is (check one): ®New ❑Renewal ❑Modification
2. If this application is being submitted as the result of a renewal or modification to an existing permit, list the
existing permit number and its issue date (if known)
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 tie
Form SWU-101 Version 03.27.08
Page 1 of 4

4I
aus, u 1 itit,

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.
Runoff from all impervious areas will be collected in swales and
underground piped drainage systems and directed to one of four propose(
detention ponds designed for 90% TSS removal.
2. Stormwater runoff from this project drains to the PastankRiver basin.
3. Total Property Area: 63 .63 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`": 74.39 acres 7. Project Built Upon Area: 58.3 %
8. How many drainage areas does the project have?.
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 I
Drainage Area
Receiving Stream Name
Pasquotank River
Pasquotank River
Stream Class & Index o.
SB 30-3— 12
SB 30-3— 2
Total Drainage Area s
1,302,200
775,884
On -site Drainage Area s
Off -site Drainage Area s
Existing Impervious Area (so
0
0
Proposed Impervious Area (sf)
% Impervious Area (total)
Impervious Surface Area
Uramage Area 1
Drainage Area
On -site Buildings s
On -site Streets s
64,380
49, 250
On -site Parking s
527,797
280,675
On -site Sidewalks s
t er on -site s taxiway &
Off -site s aprons
' 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 (BUA).
10. How was the off -site impervious area listed above derived? A topographical survey was used to
determine existing off —site impervious areas. Proposed off —site impervious
areas are determined by design.
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 th.
allowable built -upon area for each lot must be provided as an attachment. Forms can be downloaded from
http://h2o.enr.state.nc.us/su/bml2 forms htm - deed restrictions.
Form SWU-101 Version 03.27.08
Page 2 of 4

ATTACHMENT TO STORMWATER MANAGEMENT APPLICATION
Elizabeth City Aviation Center
Receiving Stream Name
Stream Class & Index No.
Total Drainage Area (sf)
On -site Drainage Area (sf)
Off -site Drainage Area (sf)
Existing Impervious Area (sf)
Proposed Impervious Area (sf)
% Impervious Area (total)
Pasquotank River
SB/30-3-(12)
273,208
273,208
-0-
-0-
86,872
31.8
Impervious Surface Area I Drainage Basin 3
On -site Buildings (sf)
-0-
On-site Streets (sf)
-0-
On-site Parking (sf)
-0-
On-site Sidewalks (sf)
-0-
Other on -site (sf) (Taxiway)
86,872
Off -site (sf)
TOTAL:
86,872

Basin Information
. Drainage Basin 4
Receiving Stream Name
Pasquotank River
Stream Class & Index No.
SB/30-3-(12)
Total Drainage Area (sf)
629,411
On -site Drainage Area (sf)
160,568
Off -site Drainage Area (sf)
468,843
Existing Impervious Area (sf)
270,564
Proposed Impervious Area (sf)
132,702
% Impervious Area (total)
64.07
Impervious Surface Area
Drainage Basin 4
On -site Buildings (sf)
-0-
On-site Streets (sf)
-0-
On-site Parking (sf)
105,578
On -site Sidewalks (sf)
1,261
Other on -site (sf)
-0-
Off-site (sf)
296,427
TOTAL:
403,266
Basin Information
Drainage Basin 5
Receiving Stream Name
Pasquotank River
Stream Class & Index No.
SB/30-3-(12)
Total Drainage Area (sf)
259,836
On -site Drainage Area (sf)
259,836
Off -site Drainage Area (sf)
-0-
Existing Impervious Area (sf)
-0-
Proposed Impervious Area (sf)
-0-
% Impervious Area (total)
-0-
Impervious Surface Area
Drainage Ba§in'5
On -site Buildings (sf)
-0-
On-site Streets (sf)
-0-
On-site Parking (sf)
-0-
On-site Sidewalks (sf)
-0-
Other on -site (sf)
-0-
Off-site (sf)
-0-
TOTAL:
-0-

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://h2o.enr.state.nc.us/su/bmp forms.htm.
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 Basm 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 SW401-Permeable Pavement
Permeable Pavement Supplement
Form SWU-101 Version 03.27.08 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 hitp://h2o.enr.state.nc.us/su/msi mans.hun)
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 Q1r—
• Original and one copy of the Deed Restrictions & Protective Covenants Form (if
required as per Part IV above)
• Original of the applicable Supplement Form(s) and O&M agreement(s) for each BMP
• Permit application processing fee of $505 (Express: 54,000 for HD, $2,000 for LD)
pa able to NCDENR
• Calculations &detailed narrative description of stormwater treatment/management
• Copy of any applicable soils report
• Two copies of plans and specifications (sealed, signed & dated), including: VCE
- 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): Hyman & Robey, PC
Mailing Address: PO Box 339
City: Camden State: NC Zip: 27921
Phone: ( 252 ) 335-1888 Fax: ( 252 ) 338-5552
Email:—[e-mail]
VIII. APPLICANT'S CERTIFICATION
I, (print or type name of person listed in General Information, item 2) Richard C . Olson
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 wX 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 .1U
/
Signature: Date: At; /
Form SWU-101 Version 03.27.08 Page 4 of

Permit No.
(to be provided by DWD)
���
NCDENR
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
O2�F W A TE'9OG
o
JUL 7 8 2008
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
Project name
Contact person
Phone number
Date
Drainage area number
II. DESIGN INFORMATION
Site Characteristics
Drainage area
1002 , 200 tt2
Impervious area
865,849 ft'
% impervious
66.49 %
Design rainfall depth
1 in
Storage Volume: Non -SR Waters
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
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
SHWT elevation
Top of shelf elevation
Temporary pool elevation
76,765 ft3
117 , 960 ft3
in
ft3
ft3
ft3
ft3
in
(unidess)
(unitless)
inlhr
ft3lsec
ft3lsec
ft3lsec
3.0 It
—4.0 It
2.0 ft
2.5 ft
2. 5•55 ft
3.0 it
34-41 ft
Form SW401-Wet Detenbon Basin-RevA Parts I. a 11. Design Summary, Page t of 2

Permit
(to be provided by D WQ)
]crd A
IL . DESIGN INFORMATION
Volume and Surface Area Calculations
SAIDA ratio
6.7 (unidess)
Surface area at the bottom of shelf
89, 240 1?
Volume at the bottom of shelf
313 , 794 ft3
Permanent pool, surface area required
87 , 235 It'
Permanent pool, surface area provided
1 1 0, 508 ft
Permanent pool volume
-16 -A 7 -1 1 fit"Average
depth for SAIDA tables
3 .93 ft
Surface area at the top of shelf
1 3 5 , 017 ftz
Volume at the top of shelf
4 2 5 , 1 1 2 ft1
Forebay volume
72 , 465 ft3
Forebay % of permanent pool volume
19 . 9 2 %
Temporary pool, surface area provided
140, 9 7 5 ft
Drawdown Calculations
Treatment volume drawdown time
3. 13 days
Treatment volume discharge rate
0. 28 ft�/s
Pre -development 1-yr, 24-hr discharge
N / A ft3/s
Post -development 1-yr, 24-hr discharge
N / A ft3/s
Additional Information
Diameter of orifice
4 in
Design TSS removal
90 %
Basin side slopes
2 :1
Vegetated shelf slope
1 0 :1
Vegetated shelf width
1 n 0
Length of flowpath to width ratio
36 :1
Length to width ratio
5 1 :1
Trash rack for overflow & orifice?
Yes (Y or N)
Freeboard provided
2 - 99 ft
Vegetated filter provided?
Min (Y or N)
Recorded drainage easement provided9
vA G (Y or N)
Capures all runoff at ultimate build -out?
Y2 a (Y or N)
Drain mechanism for maintenance or emergencies
_Dumb
Form SW401-Wet Detention Basin -Rev 4 Parts I. & II. Design Summary, Page 2 of 2

Permit
(to be provided by DWQ)
Pond A
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.
Pagel Plan
Initials Sheet No.
t 3 ,10 , & 11 1. Plans (1"- 50' or larger) of the entire site showing:
- Design at ultimate build -out,
- Off -site drainage (if applicable),
- Delineated drainage basins (include Rational C coefficient per basin),
- Basin dimensions,
- Pretreatment system,
- High flow bypass system,
- Maintenance access,
- Proposed drainage easement and public right of way (ROW),
- Overflow device, and
Wh 27
- Boundaries of drainage easement.
2. Partial plan (1" = 30' or larger) and details for the wet detention basin showing:
- Outlet structure with trash rack or similar,
Maintenance access,
Permanent pool dimensions,
Forebay and main pond with hardened emergency spillway,
Basin cross-section,
Vegetation specification for planting shelf, and
Filter strip.
N/A 3. Section view of the dry detention basin (1" = 20' or larger) showing:
- Side slopes, 3:1 or lower,
- Pretreatment and treatment areas, and
- Inlet and outlet structures.
34 4. If the basin is used for sediment and erosion control during construction, clean out of the basin is specified
on the plans prior to use as a wet detention basin.
calcs.jn P'J" table of elevations, areas, incremental volumes & accumulated volumes for overall pond and for forebay,
to verify volume provided.
34 6. A construction sequence that shows how the wet detention basin will be protected from sediment until the
entire drainage area is stabilized.
ca]cs.irPhe supporting calculations.
attached 8.aA copy of the signed and notarized operation and maintenance (0&M) agreement.
form 11 —1 9 tA cop of the deed restrictions (if required).
�ckage 10. A soils report that is based upon an actual field investigation, soil borings, and infiltration tests. County
soil maps are not an acceptable source of soils information.
Form SW401-Wet Detention Basin-Rev.4 Part III. Required Items Checklist, Page 1 of 1

Permit Number:
JUL 1 g 20p8 (to be provided byDWQ)
Drainage Area Number: 1 - Pond A
Wet Detention Basin -Operation and Maintenance Agreement
I will keep a maintenance record on this BMP. This maintenance record will be kept in a
log in a known set location. Any deficient 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 0 does not incorporate a vegetated filter at the outlet.
This system (check one):
❑ does ❑x 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 minimized to the
maximum extent practical.
- Once a year, a dam safety expert should inspect the embankment.
After the wet detention pond is established, it should be inspected once a month and
within 24 hours after every storm event greater than 1.0 inches (or 1.5 inches if in a
Coastal County). Records of operation and maintenance should be kept in a known set
location and must be available upon request.
Inspection activities shall be performed as follows. Any problems that are found shall
be repaired immediately.
BMP element:
Potentialproblem:
1 How I will remediate theproblem:
The entire BMP
Trash/debris is present.
Remove the trash/debris.
The perimeter of the wet
Areas of bare soil and/or
Regrade the soil if necessary to
detention basin
erosive gullies have formed.
remove the gully, and then plant a
ground cover and water until it is
established. Provide lime and a
one-time fertilizer application.
Vegetation is too short or too
Maintain vegetation at a height of
long.
approximately six inches.
Form SW401-Wet Detention Basin O&M-Rev.3 Page 1 of 4

Permit Number:
(to be provided by DWQ)
Drainage Area Number: 1 — Pond A
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 O&M-Rev.3 Page 2 of 4

Permit Number:
(to be provided by DWQ)
Drainage Area Number: 1 — Pond A
BMP 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 5. 5' feet in the main pond, the
sediment shall be removed.
When the permanent pool depth reads 4. 5 ' feet in the forebay, the sediment
shall be removed.
Sediment Removal
Bottom
BASIN DIAGRAM
(fill in the blanks)
V Permanent Pool Elevation 2 - 5
—2. 0 Pe manen Pool
L--------- -- Volume Sediment Removal Elevation —3 - 0 Volume
— - 0 -ft Min.
-------------------------------------------- ------
Sediment Bottom Elevation —4 . 0 1-ft 4r
Storage Sedimei
Storage
FOREBAY MAIN POND
Form SW401-Wet Detention Basin O&M-Rev.3 Page 3 of 4

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. 1 agree to notify DWQ of any
problems with the system or prior to any changes to the system or responsible party.
Project name: Eliz.City-Pa_-rdtotank Aviation Research and EevelcpTent Omner e Park, Phase 1
BMP drainage area number: 1 - Pond A
Print name: Richard C. Olson
Address: PO Box 347, Elizabeth City, NC 27907
Note: The legally responsible party should not be a homeowners association unless more than 50% of
the lots have beensoldand a resident of the subdivision has been named the president. I' /I
a Notary Public for the State of /V/ ul�/�Gt (AfeltiLq
of f ;:5Jtl0YdVytK , do hereby certify that
t personally appeared before me this e��
day of t i d462�, and acknowledge the due execution of the
forgoing wet detention basin maintenance requirements. Witness my hand and official
seal,
M CR0
eplARY
v
V 2
yNO t0 U 8 L%G
G �c
TANK C�J.O``•
SEAL
My commission expires )A la
Form SW401-Wet Detention Basin O&M-Rev.3 Page 4 of 4

Permit No.
(to be provided by DWD)
®��
NCDENR
Phone number
Date
Drainage area number
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
WET DETENTION BASIN SUPPLEMENT
O� F W A TfyQG
g r
.o
JUL 18 2008
This form 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. , t
Drainage Area 2 — Pond B
II! DESIGN INFORMATION
Site Characteristics
Drainage area
775,884
It'
Impervious area
533,115
I'
% impervious
68.71
%
Design rainfall depth
in
Storage Volume: Non -SR Waters
Minimum volume required
46, 754 ft3
Volume provided
50,431 ft3
Storage Volume: SR Waters
1-yr, 24-hr runoff depth
in
Pre -development 1-yr, 24-hr runoff
ft3
Post -development 1-yr, 24-hr runoff
ft3
Minimum volume required
ft3
Volume provided
ft3
Peak Flow Calculations
1-yr, 24-hr rainfall depth
in
Rational C, pre -development
(uniUess)
Rational C, post -development
(uniUess)
Rainfall intensity: 1-yr, 24-hr storm
inlhr
Pre -development 1-yr, 24-hr peak flow
ft3/sec
Post -development 1-yr, 24-hr peak flow
ft3/sec
Pre/Post 1-yr, 24-hr peak flow control
—
ft3/sec
Basin Elevations
Basin bottom elevation
—5.0
ft
Sediment cleanout elevation
— 6 , 0
It
Bottom of shelf elevation
2.0
ft
Permanent pool elevation
2.5
ft
SHWT elevation
2.5
It
Top of shelf elevation
3.0
It
Temporary pool elevation
3.45
ft
Form SW401-Wet Detention Basin -Rev 4 Parts L & 11 Design Summary, Pagel of 2

Permit
(to be provided by DWO)
Volume and Surface Area Calculations
SAIDA ratio
5 (unittess)
Surface area at the bottom of shelf
44 , 630 ft'
Volume at the bottom of shelf
208 , 908 ft'
Permanent pool, surface area required
38 , 790 it
Permanent pool, surface area provided
49 , 2 3 4 fe
Permanent pool volume
2 3 2, 3 7 4 ft'
Average depth for SAIDA tables
5 ft
Surface area at the top of shelf
54 , 0 5 8 ft'
Volume at the top of shet
258 , 19 7 ft'
Forebay volume
42 7 7 8 ft'
Forebay % of permanent pool volume
18 . 41 %
Temporary pool, surface area provided
55, 30 6 ft'
Drawdown Calculations
Treatment volume drawdown time
2. 13 days
Treatment volume discharge rate
0. 25 ft'/s
Pre -development 1-yr, 24-hr discharge
N / A ft'Is
Post -development 1-yr, 24-hr discharge
N / A ft'/s
Additional Information
Diameter of orifice
3.75 in
Design TSS removal
90 %
Basin side slopes
3 :1
Vegetated shelf slope
10 :1
Vegetated shelf width
1 n ft
Length of flowpath to width rato
3 :1
Length to width ratio
2 :1
Trash rack for overflow & onfice?
Yp a (Y or N)
Freeboard provided
2. 55 ft
Vegetated filter provided?
No (Y or N)
Recorded drainage easement provided?
Yes (Y or N)
Capures all runoff at ultimate build -out?
Y P s (Y or N)
Drain mechanism for maintenance or emergencies
nl h m n
Forth SW401-Wet Detention Basin-Rev.4 Parts 1. is II. Design Summary, Page 2 of 2

Permit No.
(to be provided by DWQ)
Pond B
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.
Pagel Plan
Ini, fiats
Sheet No.
3 , 9 , &
10 1. Plans (1' - 50' or larger) of the entire site showing:
- Design at ultimate build -out,
- Off -site drainage (if applicable),
- Delineated drainage basins (include Rational C coefficient per basin),
- Basin dimensions,
- Pretreatment system,
- High flow bypass system,
- Maintenance access,
- Proposed drainage easement and public right of way (ROW),
- Overflow device, and
- Boundaries of drainage easement.
28
2. Partial plan (1" = 30' or larger) and details for the wet detention basin showing:
- Outlet structure with trash rack or similar,
- Maintenance access,
- Permanent pool dimensions,
- Forebay and main pond with hardened emergency spillway,
- Basin cross-section,
- Vegetation specification for planting shelf, and
- Filter strip.
N / A
3. Section view of the dry detention basin (1" = 20' or larger) showing:
- Side slopes, 3:1 or lower,
- Pretreatment and treatment areas, and
- Inlet and outlet structures.
34
4. If the basin is used for sediment and erosion control during construction, clean out of the basin is specified
on the plans prior to use as a wet detention basin.
Ud h cnl . in ra-3'A table of elevations, areas, incremental volumes & accumulated volumes for overall pond and for forebay,
to verify volume provided.
bwr t
34 6. A construction sequence that shows how the wet detention basin will be protected from sediment until the
r� n entire drainage area is stabilized.
Lkl calcs•in 7. The supporting calculations.
JAY 1 attached B. A copy of the signed and notarized operation and maintenance (0&M) agreement.
L form CRpC-1 attached
9. A copy of the deed restrictions (if required).
10. A soils report that is based upon an actual field investigation, soil borings, and infiltration tests. County
soil maps are not an acceptable source of soils information.
Form SW401-Wet Detention Basin-Rev.4 Part III. Required Items Checklist, Page 1 of 1

Permit Number:
JUL 8 2000 (to be provided by DWQ)
Drainage Area Number: 2 - Pond B
Wet Detention Basin Operation,and.Maintenance Agreement
I will keep a maintenance record on this BMP. This maintenance record will be kept in a
log in a known set location. Any deficient 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 ❑X 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 minimized to the
maximum extent practical.
- Once a year, a dam safety expert should inspect the embankment.
After the wet detention pond is established, it should be inspected once a month and
within 24 hours after every storm event greater than 1.0 inches (or 1.5 inches if in a
Coastal County). Records of operation and maintenance should be kept in a known set
location and must be available upon request.
Inspection activities shall be performed as follows. Any problems that are found shall
be repaired immediately.
BMP element:
Potentialproblem:
How I will remediate theproblem:
The entire BMP
Trash/debris is present.
Remove the trash/debris.
The perimeter of the wet
Areas of bare soil and/or
Regrade the soil if necessary to
detention basin
erosive gullies have formed.
remove the gully, and then plant a
ground cover and water until it is
established. Provide lime and a
one-time fertilizer application.
Vegetation is too short or too
Maintain vegetation at a height of
long.
approximately six inches.
Form SW40I-Wet Detention Basin O&M-Rev.3 Page 1 of 4

Permit Number:
(to be provided by DWQ)
Drainage Area Number: 2 — Pond B
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 O&M-Rev.3 Page 2 of 4

Permit Number:
(to be provided by DWQ)
Drainage Area Number: 2 — Pond B
BMP element:
Potentialproblem:
How I will remediate the roblem:
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 7. 5 feet in the main pond, the
sediment shall be removed.
When the permanent pool depth reads 4 feet in the forebay, the sediment
shall be removed.
BASIN DIAGRAM
(fill in the blanks)
Sediment Removal
Bottom
50 t Pe anen\
------------------ Volume
—2.50 -ftMin.
Sediment
Storage
Permanent Pool Elevation 2.50
Sediment Removal Elevation —5 • 0 Volur
-------------------
Bottom Elevation —6 . 0 2 l-ft N
Storage
FOREBAY
MAIN POND
Form SW401-Wet Detention Basin O&M-Rev.3 Page 3 of 4

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. 1 agree to notify DWQ of any
problems with the system or prior to any changes to the system or responsible party.
Project name: E1iz.City-Pasguotank Aviation Research and Eevelmrent Qmrerre Park,Phase 1
BMP drainage area number: 2 - Pond B
Print name: Richard C. Olson
Address: PO Box 347, Elisabeth 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.
day of
a Notary Public for the State of
County of ���1GtD`#An� �C , do hereby certify that
vt personally appeared before me this r S44^
and acknowledge the due execution of the
forgoing wet detention basin maintenance requirements. Witness my hand and official
seal,
GY M C'
aOTAgh N _
3 pG AVBLtO 2
SEAL
My commission expires �� I
Form SW401-Wet Detention Basin O&M-Rev.3 Page 4 of 4

,d AK COr, . O,•
Qb
�O r� Ike,
no
�c
s
srO1,J�a ^•

Permit No.
I
be provided by DWD)
®RA
NCDENR
Project name
Contact person
Phone number
Date
Drainage area number
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
WET DETENTION BASIN SUPPLEMENT
O20LF W^A_7i j,q `OG
h/' y'y
O
JUL 18 2008
This form must be filled out, printed and submitted. �. n •T . ;.,,
The Required Items Checklist (Part 111) must be printed, filled out and submitted along with all of the required information 4; •�i�
Drainaqe Area 3 — Pond C
II. DESIGN INFORMATION
Site Characteristics
Drainage area
273,208
ft
Impervious area
86, 872
f
% impervious
31.8
%
Design rainfall depth
1
in
Storage Volume: Non -SR Waters
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
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 elevabon
SHWT elevation
Top of shelf elevation
Temporary pool elevation
9,969 ft'
16,802 ft'
in
ft'
ft'
ft'
to
(unitless)
(unitless)
in/hr
ft'/sec
ft'/sec
ft'/sec
ft
-6.0 ft
2 it
2.5 ft
Lam- 55 It
it
3.77 ft
Phease 1
Form SW401-Wet Detentwn Basin-Rev.4 Parts I & 11. Design Summary. Page 1 of 2

Permit
Pond C (to be provided by DWQ)
II. DESIGN INFORMATION
Volume and Surface Area Calculations
SAIDA ratio
2.9 (unitless)
Surface area at the bottom of shelf
-7UT7- ft2
Volume at the bottom of shelf
34,573 ft'
Permanent pool, surface area required
7921 ftz
Permanent pool, surface area provided
1 1 1 26 ft
Permanent pool volume
3().616 ft'
Average depth for SAIDA tables
a ft
Surface area at the top of shelf
13,298 ftz
Volume at the top of shelf
45,722 ft3
Forebay volume
8622 ft'
Forebay % of permanent pool volume
21.76 %
Temporary pool, surface area provided
14484 fly
Drawdown Calculations
Treatment volume drawdown time
2.45 days
Treatment volume discharge rate
0.05 ft3/S
Pre -development I -yr, 24-hr discharge
N/A ft3ls
Post -development 1 -yr, 24-hr discharge
N/A ft3ls
Additional Information
Diameter of onfice
5 in
Design TSS removal
—1.
90 %
Basin side slopes
3 :1
Vegetated shelf slope
l 0 :1
Vegetated shelf width
1 0 ft
Length of flowpath to width ratio
3 - 19 :1
Length to width ratio
3 . 19 :1
Trash rack for overflow & orifice?
Y e G (Y or N)
Freeboard provided
2.2 3 ft
Vegetated filter provided?
N n (Y or N)
Recorded drainage easement provided?
N n (Y or N)
Capures all runoff at ultimate build -out?
Yes (Y or N)
Drain mechanism for maintenance or emergencies
P 1 t m n
Form SW401-Wet Detention Basn-Rev.4 Parts I. & 11. Design Summary, Page 2 of 2

Permit
Pond C (to be provided by DWQ)
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.
Pagel Plan
I ip tills Sheet No.
_ 3 , 9 , 10 , 111. plans (1" - 60' or larger) of the entire site showing:
- Design at ultimate build -out,
- Off -site drainage (if applicable),
- Delineated drainage basins (include Rational C coefficient per basin),
- Basin dimensions,
- Pretreatment system,
- High flow bypass system,
- Maintenance access,
- Proposed drainage easement and public right of way (ROW),
- Overflow device, and
II - Boundaries of drainage easement.
JXI I 29 2. Partial plan (1" = 30' or larger) and details for the wet detention basin showing:
- Outlet structure with trash rack or similar,
E
- Maintenance access,
Permanent pool dimensions,
- Forebay and main pond with hardened emergency spillway,
- Basin cross-section,
- Vegetation specification for planting shelf, and
- Filler strip.
N/A 3. Section view of the dry detention basin (1" = 20' or larger) showing:
- Side slopes, 3:1 or lower,
- Pretreatment and treatment areas, and
- Inlet and outlet structures.
34 4. If the basin is used for sediment and erosion control during construction, clean out of the basin is specified
on the plans prior to use as a wet detention basin.
rA 10 in Paable of elevations, areas, incremental volumes & accumulated volumes for overall pond and for Forebay,
to verify volume provided.
h34 6. A construction sequence that shows how the wet detention basin will be protected from sediment until the
entire drainage area is stabilized.
in
uh C4LCS ' ` 7. The supporting calculations.
12Lth attad'cd 6. A copy of the signed and notarized operation and maintenance (08M) agreement.
form ERpC_1 attadfEd
,, -/ 9. A copy of the deed restrictions (if required).
k6k I j FclJe 10. A soils report that is based upon an actual field investigation, soil borings, and infiltration tests. County
soil maps are not an acceptable source of soils information.
Form SW401-Wet Detention Basin-Rev.4 Part III. Required Items Checklist, Page 1 of 1

Permit Number:
(to be provided by DWQ)
JUL 18 2008 Drainage Area Number: 3 - Pond C
Wet Detention Basin Operation and Maintenance Agreement
Y
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 x❑ does not incorporate a vegetated filter at the outlet.
This system (check one):
❑x 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 minimized to the
maximum extent practical.
- Once a year, a dam safety expert should inspect the embankment.
After the wet detention pond is established, it should be inspected once a month and
within 24 hours after every storm event greater than 1.0 inches (or 1.5 inches if in a
Coastal County). Records of operation and maintenance should be kept in a known set
location and must be available upon request.
Inspection activities shall be performed as follows. Any problems that are found shall
be repaired immediately.
BMP element:
Potentialproblem:
How I will remediate theproblem:
The entire BMP
Trash/debris is present.
Remove the trash/debris.
The perimeter of the wet
Areas of bare soil and/or
Regrade the soil if necessary to
detention basin
erosive gullies have formed.
remove the gully, and then plant a
ground cover and water until it is
established. Provide lime and a
one-time fertilizer application.
Vegetation is too short or too
Maintain vegetation at a height of
long.
approximately six inches.
Form SW401-Wet Detention Basin O&M-Rev.3 Page 1 of 4

Permit Number:
(to be provided by DWQ)
Drainage Area Number: 3 — Pond C
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 O&M-Rev.3 Page 2 of 4

Permit Number:
(to be provided by DWQ)
Drainage Area Number:
BMP 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 7.5 feet in the main pond, the
sediment shall be removed.
When the permanent pool depth reads 4 feet in the forebay, the sediment
shall be removed.
BASIN DIAGRAM
(fill in the blanks)
Permanent Pool Elevation 2
Sediment Removal . —1.5 Pe manen Pool
Volume Sediment Removal Elevation _5 _0 Volume
Bottom Elevatio —2.5 ft Min. ------
Sediment Bottom Elevation �.0 I-ft r
Storage Sedimei
Storage
FOREBAY MAIN POND
Form SW401-Wet Detention Basin O&M-Rev.3
Page 3 of 4

Permit Number:
(to be provided by DWQ)
1 acknowledge and agree by my signature below that 1 am responsible for the
performance of the maintenance procedures listed above. 1 agree to notify DWQ of any
problems with the system or prior to any changes to the system or responsible party.
Project name: Eliz.City-Pa. tank Aviation Res and Ikvelcpent O=erce Park, Rose 1
BMP drainage area number: 3 - Pond C
Print name: Richard C. Olson
Citv Manaqer
Address: PO Box 347, 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.
1, IV I _ SS a/ Notary Public for the State of
L'p/ro/J�%��A , County of u ugh do hereby certify that
�i %dn,o, � l , 01�,mn personally appeared before me this _Ilav�
day of and acknowledge the due execution of the
forgoing wet detention basin maintenance requirements. Witness my hand and official
seal,
Q��py M Clio
ssp
,�olARY
� U
2
yN AUB00
OGO J�
SEAL
My commission expires " t 1� _
Form SW401-Wet Detention Basin O&M-Rev.3
Page 4 of 4

Permit No.
(to be provided by DWO)
W A TfgO
O G
NCDENR
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM JUL 18 2008
WET DETENTION BASIN SUPPLEMENT
This form 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 inforrrmation.
Project name F1iz.City—Pa9,•Aviation Research and
Contact person -iean c. Kobey Phone number 252-335-1888
Date 4-25-08
Drainage area number Drainacte Area 4 — Pond D
II. DESIGN INFORMATION
Site Characteristics
Drainage area 629,411 1?
Impervious area 403,266 ft3
% impervious 64.07
Design rainfall depth 1 in
Storage Volume: Non -SR Waters
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
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 deanout elevation
Bottom of shelf elevation
Permanent pool elevation
SHWT elevation
Top of shelf elevation
Temporary pool elevation
35, 848 R3
40, 090 ft3
in
ft3
ft3
ft3
ft3
in
(unitless)
(unitless)
in/hr
ft3/sec
ft3/sec
ft3/sec
—5.5 It
—6.5 ft
2.0 It
2.5 It
2.5 ft
3.0 ft
1
Form SW401-Wet Detention Basin -Rev 4 Parts 1. & 11. Design Summary, Page 1 of 2

Permit No.
Rxd D (to be Provided by DWQ)
II. DESIGN INFORMATION
Volume and Surface Area Calculations
SAIDA ratio
4 .14 (unitless)
Surface area at the bottom of shelf
25 , 193 ft'
Volume at the bottom of shelf
129 , 002 ft'
Permanent pool, surface area required
26 , 059 ft'
Permanent pool, surface area provided
28 597 ft
Permanent pool volume
142 , 450 ft'
Average depth for SAIDA tables
5 .5 it
Surface area at the lop of shelf
3 2 , 3 2 8 fe
Volume at the top of shelf
157 681 ft'
Forebay volume
2 6 , 094 ft'
Forebay % of permanent pool volume
18.32 %
Temporary pool, surface area provided
33 , 961 ftZ
Drawdown Calculations
Treatment volume drawdown time
2 . 21 days
Treatment volume discharge rate
0. 19 ft'/s
Pre -development 1-yr, 24-hr discharge
N / A ft'/s
Post -development 1-yr, 24-hr discharge
N / A ft'/s
Additional Information
Diameter ofonfce
3 in
Design TSS removal
90 %
Basin side slopes
2 :1
Vegetated shelf slope
10 :1
Vegetated shelf width
10 it
Length of flowpath to width ratio
2. 68 :1
Length to width ratio
2. 36 :1
Trash rack for overflow & orifice?
y Ps (Y or N)
Freeboard provided3
2 S it
Vegetated filter provided?
N n (Y or N)
Recorded drainage easement provided?
Yes (Y or N)
Capures all runoff at ultimate build -out?
y P s (Y or N)
Drain mechanism for maintenance or emergencies
_ nn m n
Form SW401-Wel Detention Basin-Rev.4 Parts I & 11 Design Summary, Page 2 of 2

Permit No.
(to be provided by D WQ)
Ford D
111: 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.
Pagel Plan
Initials Sheet No.
18.12.13
art
1. Plans (1" - 50' or larger) of the entire site showing:
- Design at ultimate build -out,
- Off -site drainage (if applicable),
- Delineated drainage basins (include Rational C coefficient per basin),
- Basin dimensions,
- Pretreatment system,
- High flow bypass system,
- Maintenance access,
- Proposed drainage easement and public right of way (ROW),
- Overflow device, and
- Boundaries of drainage easement.
2. Partial plan IV = 30' or larger) and details for the wet detention basin showing:
- Outlet structure with trash rack or similar,
- Maintenance access,
Permanent pool dimensions,
- Forebay and main pond with hardened emergency spillway,
- Basin cross-section,
- Vegetation specification for planting shelf, and
- Filter strip.
N/A 3. Section view of the dry detention basin (1" = 20' or larger) showing:
- Side slopes, 3:1 or lower,
- Pretreatment and treatment areas, and
- Inlet and outlet structures.
mac^'-_ 34 4. If the basin is used for sediment and erosion control during construction, clean out of the basin is specified
on the plans prior to use as a wet detention basin.
calcs.in F3cA
5. t
1�� table of elevations, areas, incremental volumes 8 accumulated volumes for overall pond and for forebay,
1 to verify volume provided.
6.
34 A construction sequence that shows how the wet detention basin will be protected from sediment until the
]entire drainage area is stabilized.
VA,o calcs-in `' e supporting calculations.
i� attached 8. A copy of the signed and notarized operation and maintenance (0&M) agreement.
farm ERFC-1 attach
court 9. A copy of the deed restrictions (if required).
1=Pti/r �d'a92 10. A soils report that is based upon an actual field investigation, soil borings, and infiltration tests. County
soil maps are not an acceptable source of soils information.
Form SW401-Wet Detention Basin-Rev.4 Part III. Required Items Checklist, Page 1 of 1

Permit Number:
(to be provided by DWQ)
JUL 1 g 2008 Drainage Area Number: 4 - Pond D
Wet Detention Basin Operation and Maintenance Agreement
I will keep a maintenance record on this BMP. This maintenance record will be kept in a
log in a known set location. Any deficient 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 FRI does not incorporate a vegetated filter at the outlet.
This system (check one):
❑ does ❑x 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 minimized to the
maximum extent practical.
- Once a year, a dam safety expert should inspect the embankment.
After the wet detention pond is established, it should be inspected once a month and
within 24 hours after every storm event greater than 1.0 inches (or 1.5 inches if in a
Coastal County). Records of operation and maintenance should be kept in a known set
location and must be available upon request.
Inspection activities shall be performed as follows. Any problems that are found shall
be repaired immediately.
BMP element:
Potentialproblem:
How I will remediate theproblem:
The entire BMP
Trash/debris is present.
Remove the trash/debris.
The perimeter of the wet
Areas of bare soil and/or
Regrade the soil if necessary to
detention basin
erosive gullies have formed.
remove the gully, and then plant a
ground cover and water until it is
established. Provide lime and a
one-time fertilizer application.
Vegetation is too short or too
Maintain vegetation at a height of
long.
approximately six inches.
Form SW401-Wet Detention Basin O&M-Rev.3 Page I of 4

Permit Number:
(to be provided by DWQ)
Drainage Area Number: 4 — Pond D
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 O&M-Rev.3 Page 2 of 4

Permit Number:
(to be provided by DWQ)
Drainage Area Number: 4 — Pond D
BMP 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 8 feet in the main pond, the
sediment shall be removed.
When the permanent pool depth reads 4 _ feet in the forebay, the sediment
shall be removed.
BASIN DIAGRAM
Oil in the blanks)
0 Permanent Pool Elevation 2_5
Sediment Removal —1.5 Pe anen Pool
-------------- -- Volume Sediment Removal Elevation —5 . 5
Bottom Elevatio — 2.5 -ft Min.
---------------------------- ---------
Sediment Bottom Elevation — 6 . 5
Storage
FOREBAY MAIN POND
1-ft
Storage
Form SW401-Wet Detention Basin O&M-Rev.3
Page 3 of 4

Permit Number:
(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: E iz.City-Pascwtank Aviation Research a d Develclirent Camerc2 Park, Phase 1
BMP drainage area number: 4 = Pond D
Print name: Richard C. Olson
Title: City Manager
Address: PO Box 347, 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.
1, 5S a Notary Public for the State of
/Vor�/ c yY kyii.A County of do hereby certify that
personally appeared before me this
day of , and acknowledge the due execution of the
forgoing wet detention basin maintenance requirements. Witness my hand and official
seal,
C�U�I tM ICRO .��
s
a �osARy 2
U -
a Z
�9uf pU81.�G
Q �S
//48111111110
SEAL
My commission expires 2ej�. ' 19
Form SW401-Wet Detention Basin O&M-Rev.3
Page 4 of 4

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High Density Commercial Subdivisions
Deed Restrictions & Protective Covenances
JUL 18 2008
In accordance with Title 15 NCAC 2H.1000, the Management Regulations, deed restrictions and
protective covenants are required for High Density Commercial Subdivisions where lots will be
subdivided and sold and runoff will be treated in an engineered stormwater control facility. Deed
restrictions and protective covenants are necessary to ensure that the development maintains a built -
upon area consistent with the design criteria used to size the stormwater control facility.
I, Richard C. Olson , acknowledge, affirm and agree by my signature below, that
I will cause the following deed restrictions and covenants to be recorded prior to the sale of any lot
within the project known as Eliz.City-Pasq.Aviaticn ResE it and Davelgreit 03rrrnnx Park, Fhase 1
1. The following covenants are intended to ensure ongoing compliance with State Stormwater
Management Permit Number as issued by the Division of Water Quality
under NCAC 2H.1000.
2. The State of North Carolina is made a beneficiary of these covenants to the extent necessary to
maintain compliance with the stormwater management permit.
3. These covenants are to run with the land and be binding on all persons and parties claiming
under them.
4. The covenants pertaining to stormwater may not be altered or rescinded without the express
written consent of the State of North Carolina, Division of Water Quality.
5. Alteration of the drainage as shown on the approved plan may not take place without the
concurrence of the Division of Water Quality.
6. The maximum allowable built -upon area per lot is square feet. (OR, if the
proposed built -upon area per lot will vary, please use the following format & language (in bold):
The maximum built -upon area per lot, in square feet, is as listed below;
Lot # BUA Lot # BUA Lot # BUA Lot # BUA
SEE ATTACHED
This allotted amount includes any built -upon area constructed within the lot property boundaries,
and that portion of the right-of-way between the front lot line and the edge of the pavement. Built
upon area includes, but is not limited to, structures, asphalt, concrete, gravel, brick, stone, slate,
coquina and parking areas, but does not include raised, open wood decking, or the water
surface of swimming pools.
7. All runoff from the built -upon areas on the lot must drain into the permitted system. This may be
accomplished through a variety of means including roof drain gutters which drain to the street,
grading the lot to drain toward the street, or grading perimeter swa/es to collect the lot runoff
and directing them into a component of the stormwater collection system. Lots that will naturally
drain into the system are not required to provide these additional measures.
8. The owner of each lot, se ownership is not retained by the permittee, is required to submit a
separate storrp ate permit placation to the Division of Water Quality and receive a permit
prior to constVZ
Signature:om(/ v — Date:
I, ( mar 1 !a Notary Public in the
State of ` ork4, ��ro�ly� BB nn ,County of -:�)n sq/AdFAdK
do hereby certify thati�0.r191 1. O(�ez1 personally appeared
before me this the day ofr; I 2069 ,and acknowledge
,the- a execution of the pregoing instrument. Witness my hand and official seal,
Signatu "
My Commission expires
Form DRPC-1 Rev.1
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Attachment to Form DRPC-1 rev.1
Lot 1
Lot 1 falls in three different drainage areas. Maximum built upon areas are as follows:
Drainage Area 1: 198,899 sf
Drainage Area 2: 400,965 sf
Drainage Area 4: 106,839 sf
Lot 2
Maximum built upon area = 397,890 sf
Lot 3
Maximum built upon area = 157,210 sf
Lot 2 is the only lot that will be transferred to another owner. Deed restrictions will apply
Lots 1 and 3 will remain in the ownership of the City of Elizabeth City. The required
language will be included in the lease agreements for these sites. Individual site plans
will be provided to NCDENR as they are reviewed by the city and county.

April 30, 2008
To Whom It May Concern:
. Li
JUL 8 2000
As the owner of lot #1 in Crosswinds subdivision, I hereby grant permission to the City of
Elizabeth City to apply for an erosion control permit and perform land disturbing activities
on the northeast corner of my property as necessary for the installation of drainage
culverts and connection of the existing ditch to the proposed ditch.
Sincerely,
Arthur Mitchell,T/
P. O. Box 26
Winfall, NC 27985
(NOTARY) I, =n t �c.r C J. �7 s as a notary public certify under the
pains and penalties of perjury that I witnessed the signature of Arthur Mitchell and the
individual's identity was verified, on this date 20 c§' . My
commission expires on ( u - 1 k- ,v,-)c>e
MARIARNE T. COOPER 1
NOTARY PUBLIC
PASOUOTANN COUNTY NC

NCDENR
North Carolina Department of Environment and Natural Resources
Request for Express Permit Review
FILL-IN all information below and CHECK required Permit(s). Fax or email this completed form along with a narrative
and vicinity map of the project location to the appropriate One -Stop Coordinator:
• Fayetteville or Raleigh Region -David Lee 919-791-4203; david.lee[7ancmail.net
• Mooresville & Asheville Region -Patrick Grogan 704-663-3772 or patrick.grogan(&ncmail.net EXPRESS
• Washington Region -Lyn Hardison 252-946-9215 or lyn.hardison(a).ncmail.net
• Wilmington Region -Cameron Weaver 910-350-2004orcameron.weaver(cDncmail.net JUL 182008
Project application received after 12 noon will be stamped in the following work day.
APPLICANT Name Richard c. Olson, City Manager IBC ®ENS$
Company City of Elizabeth City
Address PO Box 347 City/StateElizabath City, NC Zip 27907-0347
Phone [phone] Fax [phone] Email
PROJECT SYSTEM(S) TRIBUTARY TO Pasquotark River SURFACE WATER CLASSIFICATION S B
PROJECT Name Ediz.City-Pascpuwtahn Aviation Research &:,8>veloPTEnt Cimero- Park Fhase Z County Pasquotank
PROJECT LOCATION (ADDRESS) 1049 Consolidated Road, Elizabeth}- City
ENGINEER/CONSULTANT Sean C. Robey, PE
Company Hyman & Robey, PC
Address PO Box 339 City/State Camden, NC Zip 27921
Phone [phone] Fax [phone] [e-mail]
State or. National Environmental Policy Act (SEPA, NEPA) - EA or EIS Required ❑Yes 0 No
❑ STREAM ORIGIN Determination: of Stream calls; Stream Name
® STORMWATER ❑Low Density ® High Density -Detention Pond ❑ High Density -Other
❑ Low Density -Curb & Gutter ❑ High Density -Infiltration ❑ Off Site
WETLANDS MUST BE ADDRESSED BELOW -- - - -
❑ COASTAL ❑ Excavation & Fill ❑ Bridges & Culverts ❑ Structures Information
MANAGEMENT ❑ Upland Development ❑ Marina Development ❑ Urban Waterfront
® LAND QUALITY © Erosion and Sedimentation Control Plan with 7 5 acres to be disturbed.(CK # for DENR use))
El WETLANDS (401): Check all that apply 'Isolated wetland on Property ❑ Yes ❑ No
Wetlands on Site ❑ Yes ❑ No / Buffer Impacts: ❑ No ❑ YES: acre(s)
Wetlands Delineation has been completed: ❑ Yes ❑ No / Minor Variance: ❑ No ❑ YES
Major General Variance ❑ No ❑ YES
US ACOE Approval of Delineation completed: ❑ Yes ❑ No 401 Application required: ❑Yes ❑ No If YES, ❑ Regular
404 Application in Process w/ US ALOE: ❑ Yes ❑ No I Permit Received from US ACOE ❑ Yes ❑ No
Perennial, Blue line stream, etc on site ❑ yes ❑ No
The legislation allows additional fees, not to exceed 50% of the original Express Review permit application fee, to be
charged for subsequent reviews due to the insufficiency of the permit applications.
For DENR use only
Fee Split for multiple permits: (Check # 1 f. d9 Z ) Total Fee Amount $ 00
SUBMITTAL
DATES
Fee
SUBMITTAL DATES
Fee
CAE
Variance ❑ Ma'; Min
SW LD
`7 - O
ce)
401:
LQ
Stream Deter,_

No pe
form <
Land
the qu
Part j
1.
2.
3.
4.
5.
Location of land -disturbing activity: County Pasquotank City or
Approximate date land -disturbing activity will
6-15-08
Purpose of development (residential, commercial, industrial, institutional, etc.): industrial & institutional
Total acreage disturbed or uncovered (including off -site borrow and waste areas): 75
6. Amount of fee enclosed: $ 4 , 875 . The Express Permitting application fee is a dual charge.
The normal fee of $65.00 per acre is assessed without a ceiling amount. In addition, the Express
Permitting supplement is $250.00 per acre up to eight acres, after which the Express Permitting
supplemental fee is a fixed $2,000.00 (Example: 9 acres total is $2,585). NOTE: Both fees are
rounded up to the next whole acre and need to be paid by separate checks to NCDENR.
7. Has an erosion and sediment control plan been filed? Yes X No Enclosed X
8. Person to contact should erosion and sediment control issues arise during land -disturbing activity:
Name Sean C. Robey, PE E-mail Address [e-mail]
Telephone [phone] Cell # Fax # [phone]
9. Landowner(s) of Record (attach accompanied page to list additional owners):
The City of Elizabeth City 252-337-6864 252-335-2503
Name Telephone Fax Number
PO Box 347 306 E.Colonial Avenue
Current Mailing Address Current Street Address
Elizabeth City,
NC 27907-0347
Elizabeth
City, NC 27909
City
State Zip
City
State Zip
10. Deed Book No.
995 Page No.
355&400
Provide a copy of the most current deed.
Part B.
1. Person(s) or firm(s) who are financially responsible for the land -disturbing activity (Provide a
comprehensive list of all responsible parties on an attached sheet):
The City of Elizabeth City
Name
PO Box 347
Current Mailing Address
E-mail Address
306 East Colonial Avenue
Current Street Address
Elizabeth City, NC 27907-0347 Elizabeth City, NC 27909
City State
Zip City
State
Zip
Telephone [phone]
Fax Number
252-335-2503

2. (a) If the Financially Responsible Party is not a resident of North Carolina, give name and street address
of the designated North Carolina Agent:
Name E-mail Address
Current Mailing Address
City
Current Street Address
State Zip City
Telephone Fax Number
State Zip
(b) If the Financially Responsible Party is a Partnership or other person engaging in business under an
assumed name, attach a copy of the Certificate of Assumed Name. If the Financially Responsible
Party is a Corporation, give name and street address of the Registered Agent:
Name of Registered Agent
Current Mailing Address
City
Address
Current Street Address
State Zip City
Fax
State Zip
(c) In order to facilitate Express Permitting, it is necessary to be able to contact the Engineer or other
consultant who can assist in providing any necessary information regarding the plan and its preparation:
Hyman & Robey, PC
Engineering Firm or other consultant
Sean Robey br Kim Hamby
Individual contact person (type or print)
[e-mail]
E-mail Address
252-335-1888 252-338-5552
Telephone Fax Number
The above information is true and correct to the best of my knowledge and belief and was provided by me
under oath (This form must be signed by the Financially Responsible Person if an individual or his attorney -in -
fact, or if not an individual, by an officer, director, partner, or registered agent with the authority to execute
instruments for the Financially Responsible Person). I agree to provide corrected information should there be
any change in the information provided herein.
Richard C. Olson
T e or i n
Signature
S
City Manager
Title or Authon
�z8la6'
Date
of the Count�of
State of North Carolina, hereby certify that K � CV`f' U ( ill appeared personally
before me this day and being duly sworn acknowledged that the above form was executed by him.
Witness mh�nf�,��� notarial seal, this
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My commission expires<_�J'