SW7120608_Modification_20190614

ROY COOPER
Governor
MICHAEL S. REGAN
Secretary
S. DANIEL SMITH
Interlm Director
NORTH CAROLINA
Environmental Quality
June 14.2019
Christopher Houtz, Director
Harvey Point Defense Testing Activity
2835 Harvey Point Road
Hertford, NC 27944-8470
Subject: Stormwater Permit No. SW7120608 Modification
Harvey Point Admin Complex
Overall Low Density Commercial Development
with Areas of High Density
Perquimans County
Dear Christopher Houtz:
The Washington Regional Office received a complete Stormwater Management Permit
Application for Harvey Point Admin Complex project on April 25, 2019. 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
2H.1000. We are forwarding Permit No. SW7120608MOD, dated June 14, 2019, for the
construction of the subject project.
This permit shall be effective from the date of issuance until June 29, 2020, 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,
William Carl Dunn, PE
Environmental Engineer
cc: David A. Deel, PE — Deel Engineering, PLLC ([e-mail])
Perquimans County Inspections
Washington Regional Office
North Caroltna Department of Environmental Quality I Division of Energy, Mineral and Land Resources
Washington Regional Office 1 943 Washtngton Square Mall I Washington, North Carolina 27889
252.946.6481

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
Harvey Point Defense Testing Activity
Administration Complex
Perquimans County
FOR THE
construction, operation and maintenance of an overall low density commercial
development with one wet detention pond 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 Water
Quality and considered a part of this permit.
This permit shall be effective from the date of issuance until June 29, 2020 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. The built -upon area percentage for the low density portion of this project must be
maintained at 24% per the requirements of Session Law 2008-211 and 15A
NCAC 2H .1000. This project is permitted for a maximum of 224,757 square feet
of BUA (for both Low Density and High Density portions of this project).
3. The stormwater systems proposed to treat the runoff generated by the designated
high density area has been approved for the management of stormwater runoff as
described in Section 1.6 on page 3 of this permit.

4. This project will maintain a minimum 50 foot wide vegetated buffers between all
impervious areas and surface waters on new development and a minimum 30 foot
wide vegetated buffer on all existing and previously permitted impervious areas.
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 plan.
The following design elements have been permitted for the wet detention pond
and must be maintained at design condition:
a. Drainage Area, acres:
b. Total Impervious Surfaces, ft2:
C. Design Storm, inches:
d. Pond Depth, feet:
e. TSS removal efficiency:
f. Permanent Pool Elevation, FMSL:
g. Permanent Pool Surface Area, ft2:
h. Permitted Storage Volume, ft3:
i. Temporary Storage Elevation, FMSL:
j. Predevelopment 1 year 24 hour:
k. Post development 1 year 24 hour:
I. Controlling Orifice:
M. Permitted Forebay Volume, ft3:
n. Fountain Horsepower, HP
o. Receiving Stream/River Basin:
P. Stream Index Number:
q. Classification of Water Body:
13.16
134,886
1.50
3.0
90 %
2.50
20,298
18,054
3.25
7.70
11.30
V notch weir, 30 degrees
7,348
1/6 hp
Perquimans River / Pasquotank
30 - 6 - (7)
"SB°
II. SCHEDULE OF COMPLIANCE
1. No homeowner/lot owner/developer shall fill in, alter, or pipe any drainage feature
(such as swales) shown on the approved plans as part of the stormwater
management system without submitting a revision to the permit and receiving
approval from the Division.
2. The permittee is responsible for verifying that the proposed built -upon area for the
entire lot does not exceed the maximum allowed by this permit.
3. 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.
4. 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.

5. The runoff from all built -upon area within the drainage area of the high density
portion of the project must be directed into the permitted stormwater control
system(s).
6. Within the low density portions of the permitted project, all roof drains shall
terminate at least 50 feet from the mean high watermark of surface waters.
7. 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 the approved plans, regardless of size.
b. Project name change.
C. Transfer of ownership.
d. Redesign or addition to the approved amount of built -upon area.
e. Further subdivision, acquisition, 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.
8. The Director may determine that other revisions to the project should require a
modification to the permit.
9. All stormwater collection and treatment systems must be located in either
dedicated common areas or recorded easements. The final plats for the project
must be recorded showing all such required easements, in accordance with the
approved plans.
10. During construction, erosion shall be kept to a minimum and any eroded areas of
the system will be repaired immediately.
11. 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.
12. 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.
13. Permanent seeding requirements for the stormwater control must follow the
guidelines established in the North Carolina Erosion and Sediment Control
Planning and Design Manual.

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. The permittee shall at all times provide the operation and maintenance necessary
to assure that all components of the permitted stormwater system function 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 side slopes.
d. Immediate repair of eroded areas.
e. Maintenance of side slopes in accordance with approved plans and
specifications.
f. Debris removal and unclogging of structures, orifice, catch basins and piping.
g. Access to all components of the system must be available at all times.
16. Records of maintenance activities must be kept by the permittee. The records will
indicate the date, activity, name of person performing the work and what actions
were taken.
17. The permittee shall submit to the Division of Water Quality an annual summary
report of the maintenance and inspection records for each BMP. The report shall
summarize the inspection dates, results of the inspections, -and the -maintenance
work performed at each inspection.
18. Prior to transfer of the permit, the stormwater facilities will be inspected by DWQ
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.
III. GENERAL CONDITIONS
This permit is not transferable to any person or entity except after notice to and
approval by the Director. In the event there is either a desire for the facilities to
change ownership, or there is a name change of the Permittee, a completed
"Name/Ownership Change Form" must be submitted to the Division of Water
Quality, signed by the parties involved, along with the applicable documents as
listed on page 2 of the form. The project must be in good standing with DWQ. 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 of the terms and conditions of
this permit until such time as the Director 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 Water Quality, 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), which have 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 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.
7. Permittee grants permission to staff of the DWQ to access the property for the
purposes of inspecting the stormwater facilities during normal business hours.
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 in writing of any name, ownership or mailing
address changes within 30 days.
10. A copy of the approved plans and specifications shall be maintained on file by the
Permittee at all times.
11. 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.
12. This permit shall be effective from the date of issuance until June 29, 2020.
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 14th day of June, 2019.
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
for
nanny smitn, interim uirector
Division of Energy, Mineral, and Land Resources
By Authority of the Environmental Management Commission
Permit Number SW7120608

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1.
OWNER / APPLICANT: HARVEY POINT DEFENSE
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TESTING ACTIVITY
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2835 HARVEY POINT ROAD
(tN'EET)
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HERTFORD, NC 27944
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OVERALL PROJECT AREA,!
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TAX MAP PARCEL ID. 2-0073-0031g6
PIN: 7886-94-5371
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PAD (TYP.)I
STORMWATER PERMIT
3.
LOCATION: HARVEY POINT DEFENSE TESTING ACTIVITY
SW7120608
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HARVEY POINT, NC
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4.
SCOPE OF PROJECT: HARVEY POINT PROPOSES THE
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INSTALLATION OF A NEW 30' X 40' GRAVEL DRIVE TO
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ACCESS A PUMP STATION WITHIN THE LOW DENSITY
AREA OF STORMWATER PERMIT SW7120608.
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5.
TOPOGRAPHIC INFORMATION SHOWN ON THIS PLAN IS
BASED ON GIS & LIDAR INFORMATION PROVIDED BY
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THE HARVEY POINT DEFENSE TESTING ACTIVITY
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EX. BUILDING
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FACILITY. BOUNDARY INFORMATION SHOWN IS BASED
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6.
PROPERTY IS LOCATED IN F.I.R.M. ZONE "X". F.I.R.M.
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ZONES SUBJECT TO CHANGE BY F.E.M.A.
7.
NO WORK IS PROPOSED IN USACE JURISDICTIONAL
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WETLANDS.
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PROPOSED GRAVEL ACCESS DRIVE IS LOCATED WITHIN
THE LOW DENSITY DRAINAGE AREA (1L) OF SWM
Ex -.-ASPHALT
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PERMIT #SW7120608. THE LOW DENSITY COMPONENT
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OF THE IT ALLOFUP TO 24% OF TOTAL
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COVERAGE. THE REVISEDCOVERAGE BREAKDOWN
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FOR 1L IS AS FOLLOWS:
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EXISTING COVERAGE: 69,025 SF
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PROPOSED GRAVEL DRIVE: 1,200 SF
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HIGH —DENSITY
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FUTURE COVERAGE: 39.646 SF
TOTAL: 109,871 SF
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