SW7111105_CURRENT PERMIT_20150925

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SW :�///��/,S�
DOC TYPE
CURRENT PERMIT li
❑ APPROVED PLANS
❑ HISTORICAL FILE
❑ COMPLIANCE EVALUATION INSPECTION
DOC DATE
YYYYMMDD

North Carolina Department of Environmental Quality
Pat McCrory Don Van der Vaart
Governor Secretary
September 25, 2015
Mr. Eric T. Weatherly, PE, County Engineer
County of Currituck
153 Courthouse Road, Suite 302
Currituck, NC 27929
Subject: Stormwater Permit No. SW7111105 Modification#2
Currituck Community Park & Regional Aviation
and Technical Training Center
Overall Low Density Commercial Development
with Areas of High Density
Currituck County
Dear Mr. Weatherly:
The Washington Regional Office received a complete Stormwater Management Permit
Modification Application for the Currituck Community Park and Regional Aviation and
Technical Training Center on August 27, 2015. Staff review of the plans and specifications
has determined that the project, as proposed, will comply with the Stormwater Regulations
set forth in Session Law 2008-211 and Title 15A NCAC 21-1.1000. We are forwarding
Permit No. SW7111105MOD#2 dated September 25, 2015, for the continued construction
of the subject project. By issuance of this permit, permit SW7111105MOD which was
issued on August 22, 2012 is hereby rescinded.
This permit shall be effective from the date of issuance until November 29, 2021, and shall
be subject to the conditions and limitations as specified therein. Please pay special
attention to the Operation and Maintenance requirements in this permit. Failure to
establish an adequate system for operation and maintenance of the stormwater
management system will result in future compliance problems.
If any parts, requirements, or limitations contained in this permit are unacceptable, you
have the right to request an adjudicatory hearing upon written request within thirty (30)
days following receipt of this permit. This request must be in the form of a written petition,
conforming to Chapter 150B of the North Carolina General Statutes, and filed with the
Office of Administrative Hearings, 6714 Mail Service Center, Raleigh, NC 27699-6714.
Unless such demands are made this permit shall be final and binding.
If you have any questions, or need additional information concerning this matter, please
contact me at [phone].
Sincerely,
Samir Dumpor, PE
Environmental Engineer
Division of Energy, Mineral, and Land Resources . Land Quality Section
Washington Regional Office
943 Washington Square Mall, Washington, North Carolina 27889 • Phone: [phone]/ FAX: [phone]
Internet: http://portal.ncdenr.org/web/Ir/land-quality
An Equal Opportunity 1 Affirmative Action Employer— 50% Recycled 110% Post Consumer Paper

PHM/ sd: G;\LR\SWP\SD\Permits-Hybrid LD & HD\SW7111105MOD#2
cc: Kevin Westra, PE, Alfred Benesch & Company
�urrituck County Planning Division
✓Washington Regional Office

STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENTAL QUALITY
DIVISION OF ENERGY, MINERAL, AND LAND RESOURCES
STATE STORMWATER MANAGEMENT PERMIT
OVERALL LOW DENSITY COMMERCIAL DEVELOPMENT
WITH AREAS OF HIGH DENSITY
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
County of Currituck
Currituck Community Park and Regional Aviation and Technical Training Center.
off NC Hwy 158, between Airport Rd. & Aviation Parkway, Barco, Currituck County
FOR THE
construction, operation and maintenance of an overall low density commercial
development with a wet detention pond as the treatment system for Drainage Area
No.2 and two constructed wetland systems for Drainage Areas No.4 & No.5, all in
compliance with the provisions of Session Law 2008-211 and 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 Energy, Mineral, and Land Resources and
considered a part of this permit.
This permit shall be effective from the date of issuance until November 29, 2021, 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.
The built -upon area percentage for this 84.41 acre project is currently approved
for 14.5% and must be maintained at 24% or lower per the requirements of .
Session Law 2008-211 and 15A NCAC 2H .1000. This project is permitted for a
maximum of 531,401 square feet of built upon area consisting of 237,267 square
feet for the Low Density areas of the project and 294,134 square feet for the
three High Density areas within this project.
3. The stormwater systems proposed to treat the runoff generated by the
designated high density areas have been approved for the management of
stormwater runoff as described in Section 1.7 & 1.8 on page 3 of this permit.
Page 2 of 9

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 high density portion of the permitted
drainage area of this project must be directed into the permitted stormwater
control system. Within the low density portions of the permitted project, the only
runoff conveyance systems allowed will be vegetated conveyances such as
swales with minimum side slopes of 3:1 (H:V) as defined in the stormwater rules
and as shown on the approved plans. The built -upon area for the future
development is limited to 50,000 square feet within the low density drainage area
#1 and 110,000 square feet within the high density drainage area #2 as set within
the approved plans and application. Plans for any future built -upon area not
currently shown on the approved plans must be submitted and approved by the
Division prior to the start of construction.
3. The built -upon areas associated with this project shall be located at least 50 feet
landward of all perennial and intermittent surface waters.
91
The following design criteria have been provided in the wet detention pond and
must be maintained at design condition:
D A N 2
C.
d.
e.
f.
9.
h.
all
19
Drainage Area, acres:
Total Impervious Surfaces, ft2:
Design Storm, inches:
Pond Depth, feet:
TSS removal efficiency:
Permanent Pool Elevation, FMSL:
Permanent Pool Surface Area, ft2:
Permitted Storage Volume, ft3:
Temporary Storage Elevation, FMSL:
Predevelopment 1 year 24 hour:
Post development 1 year 24 hour:
Controlling Orifice:
Permitted Forebay Volume, ft3:
Fountain Horsepower, HP
Receiving Stream/River Basin:
Stream Index Number:
Classification of Water Body:
ramage rea o.
6.53 ac (284,655st)
143,555
1.50
7.50 (4.0'average)
90%
7.00
12,800
23,921 (at temporary pool elev)
8.50
1 A5 cfs
0.12 cfs w/control
2.50"0 pipe
7,752
1/6 Hp
UT to North River / Pasquotank
30-2
"SC"
I
The following design criteria have been provided
and must be maintained at design condition:
a.
b.
C.
d.
e.
f.
9:
k.
I.
m
Drainage Area, ft2:
Total Impervious Surfaces, ft2:
Design Storm, inches:
Permanent Pool (PP)Elevation, FMSL:
Shallow Water (PP) Surface Area, ft2:
Temporary Pool (TP) Elevation, FMSL:
Shallow Land (TP) Surface Area, ft2:
Deep Pool (incl Forebay) Surface Area,
Required Storage Volume, ft2:
'Permitted Storage Volume, ft3:
Controlling Orifice:
Receiving Stream/River Basin:
'Stream Index Number:
Classification of Water Body:
in the two constructed wetlands
DA #4
DA#5
64,033
243,724
44,867
105,712
1.50
1.50
5.50
6.00
2,383
5,700
6.75
6.92
2,399
5,520
ft2: 1,241
2,892
5,433
10,559
5,433
13,829
.1.50"0
2.00"0 pipe
UT to North River / Pasquotank
30-2
"SC"
Page 3 of 9

i
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.
2. During construction, erosion shall be kept to a minimum and any eroded areas of
the system will be repaired immediately.
3. The permittee shall at all time provide the operation and maintenance necessary
to assure the permitted stormwater system functions at optimum efficiency. The
approved Operation and Maintenance Plan must be followed in its entirety and
maintenance must occur at the scheduled intervals including, but not limited to:
a. Semiannual scheduled inspections (every 6 months).
b. Sediment removal.
C. Mowing and re -vegetation of slopes and the vegetated filter strip.
d. Immediate repair of eroded areas.
e. Maintenance of all slopes in accordance with approved plans and
specifications.
f. Debris removal and unclogging of outlet structure, orifice device, level
spreader, filter strip, catch basins and piping.
g. Access to the outlet structure must be available at all times.
4. Records of maintenance activities must be kept for each permitted BMP. The
records will indicate the date, activity, name of person performing the work and
what actions were taken.
Access to the stormwater facilities shall be maintained via appropriate
easements at all times.
Decorative spray fountains will be allowed only in the wet detention basin
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 1/6 horsepower.
7. The facilities shall be constructed as shown on the approved plans. This permit
shall become void unless the facilities are constructed in accordance with the
conditions of this permit, the approved plans and specifications, and other
supporting data.
8. Upon completion of construction, prior to issuance of a Certificate of Occupancy,
and prior to operation of this permitted facility, a certification must be received
from an appropriate designer for the system installed certifying that the permitted
facility has been installed in accordance with this permit, the approved plans and
specifications, and other supporting documentation. Any deviations from the
approved plans and specifications must be noted on the Certification. A
modification may be required for those deviations.
9. If the stormwater system was used as an Erosion Control device, it must be
restored to design condition prior to operation as a stormwater treatment device,
and prior to occupancy of the facility.
Page 4 of 9

10. The permittee shall submit to the Director and shall have received approval for
revisedjplans, 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 Director may notify the permittee when the permitted site does not meet one
or more of the minimum requirements of the permit. Within the time frame
specified in the notice, the permittee shall submit a written time schedule to the
Director�for modifying the site to meet minimum requirements. The permittee
shall provide copies of revised plans and certification in writing to the Director
that the changes have been made.
12. The permittee shall submit final site layout and grading plans for any permitted
future areas shown on the approved plans and receive approval prior to the start
of construction.
13. A copy of the approved plans and specifications shall be maintained on file by
the Permittee at all times.
14. This permit shall become void unless the facilities are constructed in accordance
with the conditions of this permit, the approved plans and specifications, and
other supporting data.
15. Prior to transfer of the permit, the stormwater facilities will be inspected by
DEMLR personnel. The facility must be in compliance with all permit conditions.
Any items not in compliance must be repaired or replaced to design condition
prior to the transfer. Records of maintenance activities performed to date will be
required.)
16. Prior to the subdivision and/or sale of this project, in whole or in part, the
followingideed restrictions must be recorded with the Office of the Register of
Deeds:
a. The following covenants are intended to ensure ongoing compliance with
State Stormwater Management Permit Number SW7111105, as issued by
the Division of Energy, Mineral, and Land Resources under NCAC 2H.1000.
b. The State of North Carolina is made a beneficiary of these covenants to the
extent necessary to maintain compliance with the Stormwater Management
Permit.
C. These covenants are to run with the land and be binding on all persons and
parties claiming under them.
d. The covenants pertaining to stormwater may not be altered or rescinded
without the express written consent of the State of North Carolina, Division of
Energy, Mineral, and Land Resources.
e. Alteration of the drainage as shown on the approved plans may not take
place without the concurrence of the Division of Energy, Mineral, and Land
Resources.
Page 5 of 9

f. This project is permitted for a maximum of 531,401 square feet of built -upon
area. Construction of additional built -upon area in excess of this amount will
require a permit modification.
g. This project may not be sold or subdivided, in whole or in part, without first
receiving a permit modification from the Division.
h. Construction of additional impervious areas such that low -density
requirements are no longer met will require a permit modification prior to
construction. An engineered system will be required to collect and treat the
runoff from all built -upon area associated with the project, including that area
permitted under the low density option.
i. Filling in or piping of any vegetative conveyances (ditches, swales, etc.)
associated with this development, except for average driveway crossings, is
strictly prohibited by any persons.
j. The built -upon areas shall be located a minimum of 50 feet landward of all
perennial and intermittent surface waters.
17. A copy of the recorded deed restrictions must be submitted to the Division within
30 days of the date of recording the plat, and prior to selling lots. The recorded
copy must contain all of the statements above, the signature of the Permittee,
the deed book number and page, and the stamp/signature of the Register of
Deeds.
III. GENERAL CONDITIONS
This permit is not transferable except after notice to and approval by the Director.
In the event of a change of ownership, or a name change, the permittee must
submit a completed Name/Ownership Change form, to the Division of Energy,
Mineral, and Land Resources, signed by both parties, and accompanied by
supporting documentation as listed on page 2 of the form. The project must be in
good standing with the Division. The approval of this request will be considered
on its merits and may or may not be approved.
2. The permittee is responsible for compliance with all permit conditions until such
time as the Division approves the transfer request.
3. Failure to abide by the conditions and limitations contained in this permit may
subject the Permittee to enforcement action by the Division of Energy, Mineral,
and Land Resources, in accordance with North Carolina General Statute 143-
215.6A to 143-215.6C.
4. The issuance of this permit does not preclude the Permittee from complying with
any and all statutes, rules, regulations, or ordinances, which may be imposed by
other government agencies (local, state, and federal) having jurisdiction.
5. In the event that the facilities fail to perform satisfactorily, including the creation
of nuisance conditions, the Permittee shall take immediate corrective action,
including those as may be required by this Division, such as the construction of
additional or replacement stormwater management systems.
6. 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.
7. The permit issued shall continue in force and effect until revoked or terminated.
The permit may be modified, revoked and reissued or terminated for cause. The
filing of a request for a permit modification, revocation and re -issuance or
termination does not stay any permit condition.
Page 6 of 9

8. Unless ,specified elsewhere, permanent seeding requirements for the stormwater
control must follow the guidelines established in the North Carolina Erosion and
Sediment Control Planning and Design Manual.
9. Approved plans and specifications for this project are incorporated by reference
and are enforceable parts of the permit.
10. The issuance of this permit does not prohibit the Director from reopening and
modifying the permit, revoking and reissuing the permit, or terminating the permit
as allowed by the laws, rules and regulations contained in Session Law 2008-
211, Title 15A NCAC 2H.1000, and NCGS 143-215.1 et.al.
11. The pemnittee shall notify the Division of any name, ownership or mailing
address changes at least 30 days prior to making such changes.
12. This permit shall be effective from the date of issuance until November 29, 2021.
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 25th day of September, 2015.
CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
for
Division of Energy, Mineral, and Land Resources
By Authority of the Environmental Management Commission
Stormwater Permit No. SW7111105 Modification#2
Page 7 of 9

Cf
Currituck Community Park & Regional Aviation & Technical Training Center
Stormwater Permit No. SW7111105 Modification#2
Currituck 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 8 of 9

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-DEMLR Washington Regional Office
Currituck County Planning Division
Page 9 of 9

DEMLR USE ONLY
Date Received
Fee Paid
Permit Number
S a
SW 1j1
Applicable Rules: ❑ Coastal SW -1995 ❑ Coastal SW - 2008 ❑ Ph II - Post Construction
(select all that apply) ❑ Non -Coastal SW- HQW/ORW Waters ❑ Universal Stormwater Management Plan
❑ Other WQ M mt Plan: S1,U
State of North Carolina �' E I V E U
Department of Environment and Natural Resources
Division of Energy, Mineral and Land Resources
AUG 2 1 2015
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
77tis fonn may be photocopied for use as an original Ij
I. GENERAL INFORMATION.
1. Project Name (subdivision, facility, or establishment name -should be consistent with project name on plans,
... specifications, letters, operation and maintenance agreements, etc.):
Maple Park Expansion - Phase 2 (Currituck Community Park - Phase 2)
2. Location of Project (street address):
Maple Parkway between College Way and Community Way
City:Barco County:Currituck Zip:27917
3. Directions to project (from nearest major intersection):
Travel west 2.0 miles form intersection of Caratoke Hwy and Shortcut Rd. Turn right (north) onto Aviation
Pkwy. Then take the next left turn onto Maple Pkwy. Travel 0.3 miles along Maple Pkwy to the site driveway
on the right (north) side of the road.
4. Latitude:36° 23' 29.8" N Longitude:760 0' 55.5" W of the main entrance to the project.
II. PERMIT INFORMATION:
1. a. Specify whether project is (check one): ❑New ®Modification ❑ Renewal w/ Modificationt
tRenewals with modifications also requires SWU-102 - Renewal Application Form
b.If this application is being submitted as the result of a modification to an existing permit, list the existing
permit numberSW7111105 its issue date (if known)11-29-11 and the status of
construction: ❑Not Started ®Partially Completed* ❑ Completed* *provide a designer's certification
2. Specify the type of project (check one):
®Low Density ®High Density ❑Drains to an Offsite Stormwater System ❑Other
3. If this application is being submitted as the result of a previously returned application or a letter from .
DEMLR requesting a state stormwater management permit application, list the stormwater project number,
if assigned, and the previous name of the project, if different than currently
proposed,
4. a. 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):
❑LAMA Major
❑NPDES Industrial Stormwater
®Sedimentation/Erosion Control: 22 ac of Disturbed Area
❑404/401 Permit: Proposed Impacts
b.lf any of these permits have already been acquired please provide the Project Name, Project/Permit Number,
issue date and the type of each permit:
5. Is the project located within 5 miles of a public airport? UNo NYe
If yes, see S.L. 2012-200, Part VI: http://12ortal.ncdenr.orglweb/Ir/rules-and-regulations
Form SWU-101 Version Oct. 31, 2013 Page I of

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III. CONTACT INFORMATION
1. a. Print Applicant / Signing Official's name and title (specifically the developer, property owner, lessee,
designated government official, individual, etc. who owns the project):
Applicant/Organization:Currituck County
Signing Official & Title:Eric Weatherly, PF, County Engineer
b.Contact information for person listed in item 1a above:
Street Address:153 Courthouse Road, Suite 302
City:Currituck State:NC Zip:27929
Mailing Address (if applicable):153 Courthouse Road, Suite 302
City:Currituck State:NC Zip:27929
Phone: (252 ) 232-6035 Fax: (252 ) 232-3298
Email:eric.weatherly@currituckcoun!ync.org
c. Please check the appropriate box. The applicant listed above is:
® The property owner (Skip to Contact Information, item 3a)
❑ Lessee* (Attach a copy of the lease agreement and complete Contact Information, item 2a and 2b below)
❑ Purchaser* (Attach a copy of the pending sales agreement and complete Contact Information, item 2a and
2b below)
❑ Developer* (Complete Contact Information, item 2a and 2b below.)
2. a. Print Property Owner's name and title below, if you are the lessee, purchaser or developer. (This is the
person who owns the property that the project is located on):
Property
Signing Official &
b.Contact information for person listed in item 2a above:
Street Address:
Mailing Address (if applicable):
City: State: Zip:
Phone: { ) Fax: ( )
Email:
3. a. (Optional) Print the name and title of another contact such as the project's construction supervisor or other
person who can answer questions about the project:
Other Contact Person/Organization:
Signing Official & Title:
b.Contact information for person listed in item 3a above:
Mailing Address:
City: State:
Phone: ( ) Fax: ( )
Email:
4. Local jurisdiction for building permits: Currituck.County
Point of Contact:Donna Voliva Phone #: (252 ) 232-2055
Form SWU-101 Version Oct. 31, 2013 Page 2 of 6

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IV. PROJECT INFORMATION
1. In the space provided below, briefly summarize how the stormwater runoff will be treated.
This project will contain a mix of high density and low density features. Stormwater runoff in low density
areas will be collected via sheet flowand grassed lined swales. High density areas will be provided with
treatment primes by stormwater wetlands. This permit modification applies only to Drainage Area 5 and
constructed wetland #2
2. a. If claiming vested rights, identify the supporting documents provided and the date they were approved:
❑ Approval of a Site Specific Development Plan or PUD Approval Date:
❑ Valid Building Permit Issued Date:
❑ Other: Date:
b.If claiming vested rights, identify the regulation(s) the project has been designed in accordance with:
❑ Coastal SW -1995 ❑ Ph It - Post Construction
3. Stormwater runoff from this project drains to the North River basin.
4. Total Property Area: 94.41 acres
5. Total Coastal Wetlands Area: 0 acres
6. Total Surface Water Area: 0 acres
7. Total Property Area (4) -Total Coastal Wetlands Area (5) -Total Surface Water Area (6) = Total Project
Area*:94.41 acres
Total project area shall be calculated to exclude the following: the normal pool of imyounded structures, the area
between the banks of streants and rivers, the area below the Normal High Water (NHW) line or Mean High Water
(MHI9 line, and coastal wetlands landward from the NHW (or MHM line. The resultant project area is used to
calculate overall percent built upon area (BUA). Non -coastal wetlands landward of the NHW (or MHW) line tnay
be included in the total project area.
8. Project percent of impervious area: (Total Impervious Area / Total Project Area) X 100 =14.5 +/- %
9. How many drainage areas does the project have?3 (For high density, count I for each proposed engineered
stornwater BMP. For low density and other projects, use 1 for the whole property area)
10. Complete the following information for each drainage area identified in Project Information item 9. If there
are more than four drainage areas in the project, attach an additional sheet with the information for each area
provided in the same format as below.
Basin Information
Drainage Area 1
Drainage Area 4
Drainage Area 5
Drainage Area _
Receiving Stream Name
North River
North River
North River
Stream Class *
SC
SC
SC
Stream Index Number *
30-2
30-2
30-2
Total Drainage Area (sf)
2,391,886 ,
64,033
243,724
On -site Drainage Area (so
2,391,886
64,033
243,724
Off -site Drainage Area (sf)
Proposed Impervious Area** s
168,775
44,867 J
1
(05i IZ+w.4t
% Impervious Area** total
7.06%
70.07%
4 2aF
.37
Impervious- Surface Area
Drainage Area 1
Drainage Area 4
Drainage Area 5
Drainage Area _
On -site Buildings/Lots (so
544
5,302
On -site Streets (si)
79,811
On -site Parking (so
20,038
36,047
74,295
On -site Sidewalks (so
18,926
8,276
17,615
Other on -site (so
6,500
Future (sf)
1 50,000
Off -site (so
Existing BUA*** (so
°
Total (so:
168,775 V
44,867 V
105,712
15-31Itof
* Streant Class and Index Number can be determined at: http://portal.ncdenr.or )eb/wq(ps/csulclassifica6mis
`* Impervious area is defined as the built upon area including, but not limited to, buildings, roads, parking areas,
sidewalks, gravel areas, etc.
.kl 9--ph
Form SWU-101 Version Oct. 31, 2013 Page 3 of 6

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'Report only that amount of existing BUA that will remain after development. Do not report any existing BUA that
is to be removed and which will be replaced by new BUA.
11. How was the off -site impervious area listed above determined? Provide documentation.
Projects in Union County: Contact DEMLR Central Office staff to check if the project is located within a Threatened &
Endangered Species watershed that may be subject to more stringent stormwater requirements as per 15A NCAC 02B .0600.
V. SUPPLEMENT AND O&M FORMS
The applicable state stormwater management permit supplement and operation and maintenance (O&M) forms
must be submitted for each BMP specified for this project. The latest versions of the forms can be downloaded
from httl2://i)ortal.ncdenr.org/web/wq/ws/su/bmp-manual.
VI. SUBMITTAL REQUIREMENTS
Only complete application packages will be accepted and reviewed by the Division of Energy, Mineral and
Land Resources (DEMLR). A complete package includes all of the items listed below. A detailed application
instruction sheet and BMP checklists are available from
http://portal.ncdenr.org/web/wq/ws/su/statesw/forms does. The complete application package should be
submitted to the appropriate DEMLR Office. (The appropriate office may be found by locating project on the
interactive online map at hn://portal.ncdenr.org/web/wq/ws/su/maps.)
Please indicate that the following required information have been provided by initialing in the space provided
for each item. All original documents MUST be signed and initialed in blue ink. Download the latest versions
for each submitted application package from httR://portal.ncdenr.org/web/wq/`ws/"su/­statesw/forms dots.
Is
1
1. Original and one copy of the Stormwater Management Permit Application Form.
2. Original and one ropy of the signed and notarized Deed Restrictions &Protective Covenants 1�
Form. (if required as per Part VII below) e
3. Original of the applicable Supplement Form(s) (sealed, signed and dated) and O&M Ckk
agreement(s) for each BMP.
4. Permit application processing fee of $505 payable to NCDENR. (For an Express review, refer to
ham:/ /www.envhelp.org/pages/onestopexpress.html for information on the Express program
and the associated fees. Contact the appropriate regional office Express Permit Coordinator for
additional information and to schedule the required application meeting.)
5. A detailed narrative (one to two pages) describing the stormwater treatment/managementfor
the project. This is required in addition to the brief summary provided in the Project
Information, item 1.
6. A USGS map identifying the site location. If the receiving stream is reported as class SA or the
receiving stream drains to class SA waters within 1/2 mile of the site boundary, include the 1/2
mile radius on the map.
7. Sealed, signed and dated calculations (one copy).
8. Two sets of plans folded to 8.5" x 14" (sealed, signed, & dated), including:
a. Development/Project name.
b. Engineer and firm.
c. Location map with named streets and NCSR numbers.
d. Legend.
e. North arrow.
f. Scale.
g. Revision number and dates.
h. Identify all surface waters on the plans by delineating the normal pool elevation of
impounded structures, the banks of streams and rivers, the MHW or NHW line of tidal
waters, and any coastal wetlands landward of the MHW or NHW lines.
• Delineate the vegetated buffer landward from the normal pool elevation of impounded
structures, the banks of streams or rivers, and the MHW (or NHW) of tidal waters.
i. Dimensioned property/ project boundary with bearings & distances.
j. Site Layout with all BUA identified and dimensioned.
k. Existing contours, proposed contours, spot elevations, finished floor elevations.
1. Details of roads, drainage features, collection systems, and stormwater control measures.
m. Wetlands delineated, or a note on the plans that none exist. (Must be delineated by a
qualified person. Provide documentation of qualifications and identify the person who
made the determination on the plans.
Form SWU-101 Version Oct. 31, 2013 Page 4 of 6

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n. Existing drainage (including off -site), drainage easements, pipe sizes, runoff calculations.
o. Drainage areas delineated (included in the main set of plans, not as a separate document).
p. Vegetated buffers (where required).
9. Copy of any applicable soils report with the associated SHWT elevations (Please identify im
elevations in addition to depths) as well as a map of the boring locations with the existing
elevations and boring logs. Include an 8.5"x11" copy of the NRCS County Soils map with the
project area clearly delineated. For projects with infiltration BMPs, the report should also
include the soil type, expected infiltration rate, and the method of determining the infiltration rate.
(Infiltration Devices submitted to WiRO: Scliedule a site visit for DEMLR to verfij the SHWT prior
to submittal, [phone].) I
A copy of the most current property deed. Deed book:1062 Page No: 356
For corporations and limited liability corporations (LLC): Provide documentation from the NC
Secretary of State or other official documentation, which supports the titles and positions held
by the persons listed in Contact Information, item 1a, 2a, and/or 3a per 15A NCAC 21-1.1003(e).
The corporation or LLC must be listed as an active corporation in good standing with the NC
Secretary of State, otherwise the application will be returned.
http://www.secretaEy.state.nc.US/Co!porations/CSearch.aspx
VIL DEED RESTRICTIONS AND PROTECTIVE COVENANTS
For all subdivisions, outparcels, and future development, the appropriate property restrictions and protective
covenants are required to be recorded prior to the sale of any lot. If lot sizes vary significantly or the proposed
BUA allocations vary, a table listing each lot number, lot size, and the allowable built -upon area must be provided
as an attachment to the completed and notarized deed restriction form. The appropriate deed restrictions and
protective covenants forms can be downloaded from httl2:Hportal.ncdenr.org/web/ir/state-stormwater-
forms dots. Download the latest versions for each submittal.
In the instances where the applicant is different than the property owner, it is the responsibility of the property
owner to sign the deed restrictions and protective covenants form while the applicant is responsible for ensurring
that the deed restrictions are recorded.
By the notarized signature(s) below, the permit holder(s) certify that the recorded property restrictions and
protective covenants for this project, if required, shall include all the items required in the permit and listed
on the forms available on the website, 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 NC DEMLR, and that they will be recorded prior to the sale of any lot.
VIII. CONSULTANT INFORMATION AND AUTHORIZATION
Applicant. Complete this section if you wish to designate authority to another individual and/or firm (such as a
consulting engineer and/or firm) so that they may provide information on your behalf for this project (such as
addressing requests for additional information).
Consulting Engineer:Kevin 1 Westra, PE
Consulting Firm: Alfred Benesch & Company
Mailing Address:2320 West Morehead Street
City:Charlotte State:NC Zip:28208
Phone: (704 ) 496-6297
Email:[e-mail]
Fax: (704 ) 521-8955
IX. PROPERTY OWNER AUTHORIZATION (if Contact Information, item 2 has been filled out, complete this
section)
I, (print or type nante of person listed in Contact Infonnation, item 2a) , certify that I
own the property identified in this permit application, and thus give permission to (print or hjpe name of person
listed in Contact Information, item 1n) with (print or hjpe naine of organization listed in
Contact Information, item la) to develop the project as currently proposed. A copy of
the lease agreement or pending property sales contract has been provided with the submittal, which indicates the
party responsible for the operation and maintenance of the stormwater system.
Form SWU-101 Version Oct. 31, 2013 Page 5 of 6

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As the legal property owner I acknowledge, understand, and agree by my signature below, that if my designated
agent (entity listed in'Contact Information, item 1) dissolves their company and/or cancels or defaults on their
lease agreement, or pending sale, responsibility for compliance with the DEMLR Stormwater permit reverts back
to me, the property owner. As the property owner, it is my responsibility to notify DEMLR immediately and
submit a completed Name/Ownership Change Form within 30 days; otherwise I will be operating a stormwater
treatment facility without a valid permit. I understand that the operation of a stormwater treatment facility
without a valid permit is a violation of NC General Statue 143-215.1 and may result in appropriate enforcement .
action including the assessment of civil penalties of up to $25,000 per day, pursuant to NCGS 143-215.6.
do hereby certify
Date:
a Notary Public for the State of , County of
personally appeared
before me this _ day of and acknowledge the due execution of the application for
a stormwater permit. Witness my hand and official seal,
SEAL
My commission
X. APPLICANT'S CERTIFICATION
I, (print or hjpe name of person listed in Contact Information, item ]a) Eric T. Weatlzerhh PE, County Engineer
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 the
applicable stormwater rules under 15A NCAC 21-1.1000 and any other applicable state stormwater requirements.
Signature. (�"L D Dlatle: �- r-- ( S-
I, h e I�IQw4n rl �I 4-�9n a Notary Public r th State oLfj I�DYi \d—L)(6l i -"- ounty of
t i y �!_�` personally appeared LI.YVL 0- L do he eb certi that VCL° I I ersonall a eared
before me this (Day of (L UI and a k owledge the due x do of the application for
a stormwater permit. Witness hand and official seat.%%
Leeann Walton
SEAL _ -
Currituck County, NC=
Notary Public
My commie0 ioglexpir 1
Form SWU-101 Version Oct. 31, 2013 Page 6 of 6

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NCDENR
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
WETLAND 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 the required information.
Project name
Contact name
Phone number
Date
Drainage area number
Site Characteristics
Drainage area
Impervious area
Percent impervious
Design rainfall depth
Peak Flow Calculations
1-yr, 24-hr rainfall depth
1-yr, 24-hr intensity
Pre -development 1-yr, 24-hr runoff
Post -development 1-yr, 24-hr runoff
Pre/Post 1-yr, 24-hr peak control
Maple Park Expansion
Kevin J Westra, PE
704496-6297
5
21, 2015
243,724.00 ft2
105,712.00 flz ?
43.4% %
1.50 inch
3.06
in
0.13
Whir
0.36
ft3/sec
4.96
ft3/sec
4.60
ft3/sec
Storage Volume: Non -SA Waters
Minimum required volume 13,325.00 ft3
Volume provided (temporary pool volume) 13,829.00 ft3 OK
Storage Volume: SA Waters Parameters
1.5" runoff volume
ft3
Pre -development 1-yr, 24-hr runoff volume
ft3
Post -development 1-yr, 24-hr runoff volume
ft3
Minimum volume required
h3
Volume provided
ft3
Outlet Design
Depth of temporary pool/ponding depth (DP,ard)
12.00 in
OK
Drawdown time
2.73 days
OK
Diameterof orifice
2.00in
OK
Coefficient of discharge (Co) used in orifice diameter
calculation
0.62 (unitless)
Driving head (Ho) used in the orifice diameter calculation
0.36 It
OK
O
Rn EECEMED
AUG 272015
` VARRR.0
Form SW401-Wettand-Rev.6-11/16/09 Parts I and II. Project Design Summary, Page 1 of 3

Surface Areas of Wetland Zones
Surface Area of Entire Wetland
14,103.00 ft2
OK
Shallow Land
5,520.00 ft2
OK
The shallow land percentage is:
I
39% %
Shallow Water
5,700.00 ft2
OK
The shallow water percentage is:
40% %
Deep Pool
Forebay portion of deep pool (pretreatment)
1,554.00 ft2
OK
The forebay surface area percentage is:
11% %
Non-forebay portion of deep pool
1,338.00 ft2
OK
The non-forebay deep pool surface area percentage is:
9% %
Total of wetland zone areas 114,112.00
ft2
Enter data into the shaded cells in this section.
Add or subtract the following area from the zones
9.00 ft2
Topographic Zone Elevations
Temporary Pool Elevation (TPE)
Shallow Land (top) I
amsl
6y2
Permanent Pool Elevation (PPE)
__J,�ft
Shallow Water/Deep Pool (top)
6.00 ft amsl
Shallow Water bottom I
5.50 ft amsl
Most shallow point of deep pool's bottom
6.00 ft amsl
Deepest point of deep pool's bottom
3.00 ft amsl
Design must meet one of the following two options:
This design meets Option #1, ,
Y (Y or N)
Top of PPE is within 6" of SHWT, If yes:
SHWT (Seasonally High Water Table)
6.00 ft amsl
OK
This design meets Option 42,
(Y or N)
Wetland has liner with permeability <0.01 inlhr, If yes:
Depth of topsoil above impermeable liner
in
Topographic Zone Depths
Temporary Pool
Shallow Land
0.00 in
Permanent Pool
Shallow Water
6.00 in
OK
Deep Pool (shallowest)
0.00 in
Deep Pool (deepest)
36.00 in
OK
Planting Plan
Are cattails included in the planting plan?
N (Y or N)
OK
Number of Plants recommended in Shallow Water Area:
Herbaceous (Ccubic-inch containers
1,450
Number of Plants recommended in Shallow Land Area:
Herbaceous (4'cubic-inch container), OR
1,400
Shrubs (1 gallon or larger), OR 1
224
Trees (3 gallon or larger) and Herbaceous (4+cubic-inch)
28 and
1,120
Number of Plants provided in Shallow Water Area:
Herbaceous (4'cubic-inch container)
2,678
OK
Number of Plants provided in Shallow Land Area:
Herbaceous (4'cubic-inch container)
2,000
OK
Shrubs (1 gallon or larger)
16
More required if not planting herb. and/or trees.
Trees (3 gallon or larger) and
0
More required if not planting herb. and/or shrubs.
Grass -like Herbaceous (4+cubic-inch)
Form SW401-Wetland-Rev.6-11116/09 Parts I and 11. Project Design Summary, Page 2 of 3

r
Additional Information
Can the design volume be contained?
Y
(Y or N)
OK
Does project drain to SA waters? If yes,
N
(Y or N)
Excess volume must pass through filter.
What is the length of the vegetated filter?
ft
Are calculations for supporting the design volume provided in the
Y
(Y or N)
OK
application?
Is BMP sized to handle all runoff from ultimate build -out?
Y
(Y or N)
OK
Is the BMP located in a recorded drainage easement with a
Y
(Y or N)
OK
recorded access easement to a public Right of Way (ROW)?
The length to width ratio is:
1.79 :1
OK
Approximate wetland length
215.00 ft
Approximate wetland width
120.00 ft
Approximate surface area using length and width provided
25,800.00
ft2
This approx. surface area is within this number of square feet
of the entire wetland surface area reported above:
Will the wetland be stabilized within 14 days of construction?
Y
(Y or N)
OK
Form SW401-Wetland-Rev.6-11/16/09 Parts I and II. Project Design Summary, Page 3 of 3

State of North Carolina
Department of Environment and Natural Resources '�
Division of Water Quality I `C F IV E D
STATE STORMWATER PERMIT NAME/OWNERSHIP CHANGE
s y�
I. CURRENT PERMIT INFORMATION D�VV®n , �ViAR®
1. Stormwater Management Permit Number: SW7111105
2. Project Name: Maple Community Campus & Regional Aviation and Technical Training Center
3. Current Permit Holder's Company Name/Organization: County of Currtituck
4. Signing Official's Name: Eric T. Weatherly, PE Title: County Engineer
5. Mailing Address: 153 Courthouse Road, Suite 302
City: Currituck State: NC Zip: 27929
6. Phone: [phone] Fax: ( 252 ) 232-3298
RECEIVED
II. PROPOSED PERMITTEE / OWNER / PROJECT / ADDRESS INFORMATION
This request is for: (please check all that apply) J U N 17 2013
❑ Name change of the owner (Please complete Items 1, 2 and 3 below)D,AI^�, TARO
❑ Name change of project (Please complete Item 5 below) V V Q,( �/V
❑ Change in ownership of the property/company (Please complete Items 1, 2, 3, and 4 below)
❑ Mailing address / phone number change. (Please complete Item 4 below)
❑ Other (please explain):
1. Proposed permittee's company name/organization:
2. Proposed permittee's signing official's name:
3. Proposed permittee's title:
4. Mailing
City:
Phone: ( )
State: Zip:
Fax:
5. New Project Name to be placed on permit: Currituck Community Park & Regional Aviation & Technical Training center
Please check the appropriate box. The proposed permittee listed above is:
❑ HOA or POA (Attach documentation showing that the HOA or POA owns, controls, or has a
recorded easement for all areas that contain stormwater system features. Print name of HOA or
POA in #t above and provide name of HOA/POA's authorized representative in #2 above)
❑ The property owner
❑ Lessee (Attach a copy of the lease agreement and complete Property Owner Information on
page 4)
'❑ Purchaser (Attach a copy of the pending sales agreement. Final approval of this transfer will be
granted upon receipt of a copy of the recorded deed)
❑ Developer (Complete Property Owner Information on page 4)
SSW N/O Change Rev24Sept2012 Page 1 of 4

iOPAW-0 WO

III. REQUIRED ITEMS
A request to transfer a permit will not be approved by the Division of Water Quality (DWQ) unless all
of the applicable required items listed below are included with the submittal. Failure to provide the
listed items may result in processing delays or denial of the transfer.
1. This completed and signed form. This certification must be completed and signed by both the
current permit holder and the new applicant if this is a change of ownership.
2. Legal documentation of the property transfer to a new owner.
3. A copy of any recorded deed restrictions, covenants, or easements, if required by the permit.
4. The designer's certification (DWQ Engineer and Designer Certification Forms are available from
each DWQ Regional office), if required by the permit and if not already submitted to DWQ.
5. If the proposed permittee is a firm, partnership, association, institution, corporation, limited liability
company, or other corporate entity, provide documentation showing the authority of the named
representative to act on behalf of the proposed permittee.
6. The $40.00 processing fee. If this is an initial transfer from the original permittee the processing
fee is not required. Subsequent ownership transfers will require the $40.00 processing fee.
IV. CURRENT PERMITTEE'S CERTIFICATION
Please check one of the following statements and fill out the certification below that statement:
[4heckk here if the current permittee is only changing his/her/its name, the project name, or mailing
address, but will retain the permit. I, the current
permittee, hereby notify the DWQ that I am changing my name and/or I am changing my mailing
address and/or I am changing the name of the permitted project. I further attest that this application
for a name/ownership change is accurate and complete to the best of my knowledge. I understand
that if all required parts of this application are not completed or if all required supporting information
and attachments listed above are not included, this application package will be returned as
incomplete.
❑ Check here if current permittee is transferring the property to a new owner and will not retain
ownership of the permit.
I, , the current permittee, am submitting this application
for a transfer of ownership for permit # . I hereby notify DWQ of the sale or
other legal transfer of the stormwater system associated with this permit. I have provided a copy of
the most recent permit, the designer's certification for each BMP, any recorded deed restrictions,
covenants, or easements, the DWQ approved plans and/or approved as -built plans, the approved
operation and maintenance agreement, past maintenance records, and the most recent DWQ
stormwater inspection report to the proposed permittee named in Sections II and V of this form. I
further attest that this application for a name/ownership change is accurate and complete to the best
of my knowledge. I understand that if all required parts of this application are not completed or if all
required supporting information and attachments listed above are not included, this application
package will be returned as incomplete. I assign all rights and obligations as permittee to the
proposed permittee named in Sections II and V of this form. I understand that this transfer of
ownership cannot be approved by the DWQ unless and until the facility is in compliance with the
permit.
Signature:
Date: 6--io-13
a Notary Public for the State of
„/!n � 4Pn � a.ro f i n � County of ,at d�do hereby certify that
/-r-7 c- %- Wo u ffies/y personally appeared before me this the
fh day of
20 /3 , and acknowledge the due execution of the
forgoing instrument. yVitr>ess my hand and official seal,
Nota Si nature
NOTARY PUBLIC
CAMDEN COUNTY
NORTH CAROLINA
nmisslon Expires 6/27/2014
SSW N/O Change Rev24Sept2012 Page 2 of 4

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V. PROPOSED PERMITTEE CERTIFICATION: (This section must be completed by the
Proposed Permittee for all transfers of ownership)
I, , hereby notify the DWQ that I have acquired
through sale, lease or legal transfer, the responsibility for operating and maintaining the permitted
stormwater management system, and, if applicable, constructing the permitted system. I
acknowledge and attest that I have received a copy of: (check all that apply to this permit)
Bthe most recent permit
the designer's certification for each BMP
❑ any recorded deed restrictions, covenants, or easements
❑ the DWQ approved plans and/or approved as -built plans
❑ the approved operation and maintenance agreement
epast maintenance records from the previous permittee (where required)
DWQ stormwater inspection report showing compliance within 90 days prior to this transfer
I have reviewed the permit, approved plans and other documents listed above, and I will comply with
the terms and conditions of the permit and approved plans. i acknowledge and agree that I will
operate and maintain the system pursuant to the requirements listed in the permit and in the
operation and maintenance agreement. I further attest that this application for a name/ownership
change is accurate and complete to the best of my knowledge. I understand that if all required parts
of this application are not completed or if all required supporting information and attachments listed
above are not included, this application package will be returned as incomplete.
Signature:
County of
Date:
a Notary Public for the State of
do hereby certify that
personally appeared before me this the
day of , 20 , and acknowledge the due execution of the
forgoing instrument. Witness my hand and official seal,
(Notary Seal)
Notary Signature
Additional copies of the original permit and the approved Operation and Maintenance agreement can
be obtained from the appropriate Regional Office of the Division of Water Quality.
This completed form, including all supporting documents and processing fee (if required), should be
sent to the appropriate Regional Office of the North Carolina Department of Environment and Natural
Resources, Division of Water Quality, as shown on the attached map.
Please note that if the Proposed Permittee listed above is not the property owner, the property owner
must complete and sign page 4 of this document. Both the lessee / developer and the property
owner will appear on the permit as permittees.
SSW N/O Change Rev24Sept2012 Page 3 of 4

i

VI. PROPERTY OWNER CONTACT INFORMATION AND CERTIFICATION
If the Proposed Permittee listed in Sections It and V of this form is not the Property Owner, the
Property Owner must provide his/her Contact Information below and sign this form:
Printed Name:
Organization: _
Title within the Organization:
Street Address:
City:
Mailing Address:
City:
Phone:
Email:
State:
(if different from street address)
State:
Fax:
Zip:
Zip:
I certify that I own the property identified in this permit transfer document and have given permission
to the Proposed Permittee listed in Sections 11 and V to develop and/or, lease the property. A copy
of the lease agreement or other contract, which indicates the party responsible for the construction
and/or operation and maintenance of the stormwater system, has been provided with the submittal.
As the legal property owner I acknowledge, understand, and agree by my signature below, that I will
appear as a permittee along with the lessee/developer and I will therefore share responsibility for
compliance with the DWQ Stormwater permit. As the property owner, it is my responsibility to notify
DWQ by submitting a completed Name/Ownership Change Form within 30 days of procuring a
developer, lessee or purchaser for the property. I understand that failure to operate and maintain the
stormwater treatment facility in accordance with the permit is a violation of NC General Statute
(NCGS) 143-215.1, and may result in appropriate enforcement action including the assessment of
civil penalties of up to $25,000 per day, pursuant to NCGS 143-215.6.
Signature of the property owner
Date:
a Notary Public for the State of
County of ; do hereby certify that
personally appeared before me this the
day of , 20, and acknowledge the due execution of the
forgoing instrument. Witness my hand and official seal,
Notary Signature
(Notary Seal)
SSW N/O Change Rev24Sep12012 Page 4 of 4

It/ RECEIVE.Do� WArFA
®G o� 09
NCDENR JUN - 6 2012 0�
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM ®��_` A / /� �o
WETLAND SUPPLEMENT vV/
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 the required information.
Project name
Contact name
Phone number
Date
Drainage area number
Mark N. Breen
704496-6297
4, 2012
II., DESIGN INFORMATION
Site Characteristics
Drainage area 64,033.00 ft2
Impervious area 44,867.00 ft2 'il"N ��3C� Percent impervious 70.1% % `�• tom` ....... �� ,I
0 j
Design rainfall depth %
1.50 inch Z t O
Peak Flow Calculations
1-yr, 24-hr rainfall depth
1-yr, 24-hr intensity
Pre -development 1-yr, 24-hr runoff
Post -development 1-yr, 24-hr runoff
Pre/Post 1-yr, 24-hr peak control
Storage Volume: Non -SA Waters
Minimum required volume
Volume provided (temporary pool volume)
Storage Volume: SA Waters Parameters
1.5" runoff volume
Pre -development 1-yr, 24-hr runoff volume
Post -development 1-yr, 24-hr runoff volume
Minimum volume required
Volume provided
Outlet Design
Depth of temporary pool/ponding depth (DPI,,,)
Drawdown time
Diameter of orifice
Coefficient of discharge (Co) used in orifice diameter
calculation
Driving head (Ho) used in the orifice diameter calculation
3.06
in
/ SEAL
0.13
0.24
n/hr
ft3/sec2.
026926
/ z
-, GINS.
''''�9,
71
W/sec
.....O't� ````•
2.
ff3/sec
S� /?aJL
5,443.00
ft3
Design volume may be insufficient. Provide calculations
5,443.00 ft3
showing that it is greater than or equal to the Simple Method
volume.
ft3
ft3
ft3
ft3
ft3
9.96 in OK
2.05 days OK
1.50 in OK
0.62 (unitless)
0.25 ft Provide calculations to support this driving head.
Form SW401-Wetland-Rev.6-11116/09 Parts I and II. Project Design Summary, Page 1 of 6

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Surface Areas of Wetland Zones
Surface Area of Entire Wetland
6,023.00 ftz
Insufficient wetland surface area.
Shallow Land
2,399.00 ft2
OK
The shallow land percentage is:
40% %
Shallow Water
2,383.00 fl
OK
The shallow water percentage is:
40% %
Deep Pool
Forebay portion of deep pool (pretreatment)
618.00 fl
OK
The forebay surface area percentage is:
10% %
Non-forebay portion of deep pool
623.00 ft2
OK
The non-forebay deep pool surface area percentage is:
10% %
Total of wetland zone areas
6,023.00 ft2
OK
Add or subtract the following area from the zones
0.00 ft2
Topographic Zone Elevations
Temporary Pool Elevation
p PIa+�S
(TPE)
bl7�
Shallow Land (top)
.5:56 amsl
Azlj
Permanent Pool Elevation (PPE)
V 1
Shallow Water/Deep Pool (top)
5.50 ft amsl
l
Shallow Water bottom
5.00 ft amsl
Most shallow point of deep pool's bottom
5.50 It amsl
Deepest point of deep pool's bottom
3.00 ft amsl
Design must meet one of the following two options:
This design meets Option #1,
Y (Y or N)
Top of PPE is within 6" of SHWT, If yes:
SHWT (Seasonally High Water Table)
5.50 ft amsl
OK
This design meets Option #2,
(Y or N)
Welland has liner with permeability < 0.01 in/hr, If yes:
Depth of topsoil above impermeable liner
in
Topographic Zone Depths
Temporary Pool
Shallow Land
0.00 in
Permanent Pool
Shallow Water
6.00 in
OK
Deep Pool (shallowest)
0.00 in
Deep Pool (deepest)
30.00 in
OK
Planting Plan
Are cattails included in the planting plan?
N (Y or N)
OK
Number of Plants recommended in Shallow Water Area:
Herbaceous (Ccubic-inch container)
600
Number of Plants recommended in Shallow Land Area:
Herbaceous (4'cubic-inch container), OR
600
Shrubs (1 gallon or larger), OR
96
Trees (3 gallon or larger) and Herbaceous (4+ cubic -inch)
12 and
480
Number of Plants provided in Shallow Water Area:
Herbaceous(4'cubic-inch container)
1,328
OK
Number of Plants provided in Shallow Land Area:
Herbaceous(4'cubic-inch container)
1,157
OK
Shrubs (1 gallon or larger)
20
More required if not planting herb. and/or trees.
Trees (3 gallon or larger) and
0
More required if not planting herb, and/or shrubs.
Grass -like Herbaceous (4+ cubic -inch)
■\ Form SW401-Wetland-Rev.6-11/16/09 Parts I and II. Project Design Summary, Page 2 of

a
Additional Information
Can the design volume be contained?
Does project drain to SA waters? If yes,
What is the length of the vegetated filter?
Are calculations for supporting the design volume provided in the
application?
Is BMP sized to handle all runoff from ultimate build -out?
Is the BMP located in a recorded drainage easement with a
recorded access easement to a public Right of Way (ROW)?
The length to width ratio is:
Approximate wetland length
Approximate wetland width
Approximate surface area using length and width provided
Will the wetland be stabilized within 14 days of construction?
Y
(Y or N)
OK
N
(Y or N)
Excess volume must pass through filter.
na
It
Y
(Y or N)
OK
Y
(Y or N)
OK
Y
(Y or N)
OK
1.55:1
OK
119.00 It
77.00 It
9,163.00
ft'
This approx. surface area is within this number of square feet
of the entire wetland surface area reported above:
Y
(Y or N)
OK
Form SW401-Wetland-Rev.6-11/16/09
Parts I and If. Project Design Summary, Page 3 of 6

RECEIVE®
Permit Number:
(to be provided by DWQ)
J U N - 6 2012 _-#1 l
g� Drainage Area Number: µl
Stormwater vAD,WQPWA 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:
— Immediately following construction of the stormwater wetland, bi-weekly inspections will be
conducted and wetland plants will be watered bi-weekly until vegetation becomes established
(commonly six weeks).
— No portion of the stormwater wetland will be fertilized after the first initial fertilization that is
required to establish the wetland plants.
— Stable groundcover will be maintained in the drainage area to reduce the sediment load to the
wetland.
— Once a year, a dam safety expert should inspect the embankment.
After the stormwater wetland is established, I will inspect it monthly 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:
Entire BMP
Trash/debris is present.
Remove the trash/debris.
Perimeter of wetland
Areas of bare soil and/or erosive
Regrade the soil if necessary to remove the
gullies have formed.
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 long.
Maintain vegetation at an appropriate
height.
Inlet device: pipe or
The pipe is clogged (if applicable).
Unclog the pipe. Dispose of the sediment
Swale
offsite.
The pipe is cracked or otherwise
Replace the pipe.
if applicable).
-damaged
Erosion is occurring in the swale (if
Regrade the swale if necessary to smooth
applicable).
it over and provide erosion control
devices such as reinforced turf matting or
riprap to avoid future problems with
erosion.
Form SW401-Wetland O&M-Rev.4 Page 1 of 3

a
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Permit
(to be provided by DWQ)
BMP element:
Potentialproblem:
How I will remediate theproblem:
Forebay
Sediment has accumulated in the
Search for the source of the sediment and
forebay to a depth that inhibits the
remedy the problem if possible. Remove
forebay from functioning well.
the sediment and 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
a pesticide is used, wipe it on the plants
rather than spraying.
Deep pool, shallow water
Algal growth covers over 50% of the
Consult a professional to remove and
and shallow land areas
pool and shallow water areas.
control the algal growth.
-deep
Cattails, phragmites or other invasive
Remove invasives by physical removal or
plants cover 50% of the deep pool and
by wiping them with pesticide (do not
shallow water areas.
spray) - consult a professional.
Shallow land remains flooded more
Unclog the outlet device immediately.
than 5 days after a storm event.
Plants are dead, diseased or dying.
Determine the source of the problem:
soils, hydrology, disease, etc. Remedy the
problem and replace plants. Provide a
one-time fertilizer application to establish
the ground cover if necessary.
Best professional practices show that
Prune according to best professional
pruning is needed to maintain optimal
practices.
health.
-plant
Sediment has accumulated and
Search for the source of the sediment and
reduced the depth to 75% of the
remedy the problem if possible. Remove
original design depth of the deep
the sediment and dispose of it in a location
pools.
where it will not cause impacts to streams
or the BMP.
Embankment
A tree has started to grow on the
Consult a dam safety specialist to remove
embankment.
the tree.
An annual inspection by appropriate
Make all needed repairs.
professional shows that the
embankment needs repair.
Evidence of muskrat or beaver activity
Consult a professional to remove muskrats
is present.
or beavers.
Micropool
Sediment has accumulated and
Search for the source of the sediment and
reduced the depth to 75% of the
remedy the problem if possible. Remove
original design depth.
the sediment and dispose of it in a location
where it will not cause impacts to streams
or the BMP.
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.
Receiving water
Erosion or other signs of damage have
Contact the NC Division of Water Quality
occurred at the outlet.
401 Oversight Unit at 919-733-1786.
Form SW401-Wetland O&M-Rev.4 Page 2 of 3

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Permit Number:
(to be provided by DWQ)
I acknowledge and agree by my signature below that I am responsible for the performance of the
maintenance procedures listed above. I agree to notify DWQ of any problems with the system or prior
to any changes to the system or responsible party.
Project name:Maple Park Expansion
BMP drainage area
Print name:Eric T. Weatherly
Title:County Engineer
Address:153 Courthouse Road, Currituck NC 27929
Phone:[phone]
Signature:
Date -
Note: The legally responsible party should not be a homeowners association unless more than 50% of the lots have been
sold and a resident of the subdivision has been named the president.
1, ev+ a Notary Public for the State of
orj f� l "nrn (itnn , County of a^Jp-n do hereby certify that
r LC- -T . 11J e a_�tln e v- personally appeared before me this ! '3f day of
A•ytne. , go a. , and acknowledge the due execution of the forgoing stormwater wetland
maintenance requirements. Witness my hand and official seal, -
�m ary `Pvbltcl
MARY S. GILBERT
NOTARY PUBLIC
CAMDEN COUNTY
NORTH CAROLINA
My Commisslon Expires 6/27/2014
SEAL
My commission expires In 1.2,i I l--
Form SW401-Wetland O&M-Rev.4 Page 3 of 3

State Stormwater Management Systems
Permit No. SW7111105
Maple Community Campus & Regional Aviation & Technical Training Center
,r Stormwater Permit No. SW7111105
Currituck County
Designer's Certification
I 'Sean C. Robey , as a duly registered Professional Engineer in the
State of North Carolina, having been authorized to observe (periodically/ weekly/ full
time) the construction of the project,
Currituck Community Park and COA Regional Aviation and Technical Training Center
(Project)
for Currituck County (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:
Registration Number
Date J—//-13
/8s-sv
SEAL
o�.\N ICARO�if �%��
SEAL
= 18550 0
��k�1C. nviog��\\\\\\•
MAR 1 3 2013
DV -V VAR0
Page 8 of 9

0
17
c

State Stormwater Management Systems
Permit No. SW7111105
1
Certification Requirements:
X 1. The drainage area to the system contains approximately the permitted
acreage.
x 2. The drainage area to the system contains no more than the permitted
amount of built -upon area.
x 3. All the built -upon area associated with the project is graded such that the
runoff drains to the system.
x 4. All roof drains are located such that the runoff is directed into the system.
X 5. The outlet/bypass structure elevations are per the approved plan.
X 6. The outlet structure is located per the approved plans.
x 7. Trash rack is provided on the outlet/bypass structure.
x 8. All slopes are grassed with permanent vegetation.
X 9, Vegetated slopes are no steeper than 3:1.
X 10. The inlets are located per the approved plans and do not cause short-
circuiting of the system.
x 11. The permitted amounts of surface area and/or volume have been
provided.
x 12. Required drawdown devices are correctly sized per the approved plans.
x 13. All required design depths are provided.
x 14. All required parts of the system are provided, such as a vegetated shelf,
and a forebay.
x 15. The required system dimensions are provided per the approved plans.
cc: NCDENR-DWQ Washington Regional Office
Currituck County Building Inspections
Page 9 of 9

March 11, 2013
Mr. Scott Vinson
Dept. of Environment and Natural Resources
Land Quality Section
943 Washington Square Mail
Washington, NC 27889
Subject: Engineer's Certification
Currituck Community Park and Regional
Aviation & Technical Training Center
Permit No. SW 7111105
HR Project. #110110/110140
MAR 1 3 2013
Dear Mr. Vinson: 7"
Enclosed please find the Designer's Certification and a Name/ Ownership Change Form for the
above referenced project. The development name has changed from the preliminary name
provided during permitting, Maple Community Campus, to Currituck Community Park.
Please note that, due to the time of year, grass vegetation on the slopes is not yet well
established; however the slopes have been seeded and mulched and vegetation is beginning to
grow.
If you have any questions, please do not hesitate to contact this office at [phone].
Sincerely,
Hyman & Robey, PC
�V�z
� Ov�r- �(
Kimberly D. Hamby U
Engineering Project Manager
cc: file
Eric Weatherly
P. O. Box 339 Camden, North Carolina 27921
[phone] License C-0598
w .hymanrobey.com