SW7080717_Modification_20190613

ROY COOPER
Governor-
MICHAEL S. REGAN
Secretary
S. DANIEL SMITH
Interim Director
NORTH CAROLINA
Environmental Quality
Christopher Houtz, Director June 13, 2019
Harvey Point Defense Testing Activity
2835 Harvey Point Road
Hertford, NC 27944-8470
Subject: Stormwater Permit No. SW7080717 Modification
Harvey Point DTA — PBI Site Expansion
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 DTA — PBI Site Expansion 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. SW70807171VIOD, dated June 13,
2019, for the construction of the subject project.
This permit shall be effective from the date of issuance until December 31, 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 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 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 Carolina Department of Environmental Quality I Division of Energy, Mineral and Land Resources
Washington Regional Office 1 943 Washington Square Mall I Washington, North Carolina 27889
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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
Harvey Point DTA, P81 Site Expansion
Perquimans County
FOR THE
construction, operation and maintenance of an overall low density commercial
development with two constructed wetlands 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 December 31, 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.
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 893,851 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 areas have been approved for the management of storrwater 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.
5. 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 two constructed
wetland stormwater facilities, and must be provided in the systems at all times.
DA #1
DA #2
a.
Drainage Area, ft2:
94,960
256,132
b.
Total Impervious Surfaces, ft2:
18,295
55,321
c.
TSS removal efficiency:
85%
85%
d.
Design Storm, inches:
1.51,
1.5"
e.
Permanent Pool Elevation, FMSL:
5.50
3.50
f.
Permitted Surface Area apPP, ft2:
6,750
7,500
g.
Forebay Surface Area, ft :
1,650
1,875
h.
Deep Pool Surface Area, ft2:
600
625
i.
Temporary Pool Elevation, FMSL:
6.50
4.50
j.
Temporary Pool Surface Area, ft2:
11,250
12,500
k.
Permitted Storage Volume, W:
11,174
12,488
I.
Controlling Orifice:
1.0" 0 hole
1.0" O hole
m.
Receiving Stream / River Basin:
Perquimans
River / Pasquotank
n.
Stream Index Number:
30 — 6 — (7)
o.
Classification of Water Body:
"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 water mark 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 Energy Mineral and Land Resources
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 DEQ
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 Energy
Mineral and Land Resources, 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 DEQ. 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 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), 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 DEQ 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 December 31, 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 13th day of June, 2019.
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
for
Danny Smith, Interim Director
Division of Energy, Mineral, and Land Resources
By Authority of the Environmental Management Commission
Permit Number SW7080717

GRAPHIC SCALE
300 p 150 300 800 1200
( IN FEET )
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NOTES:
1. OWNER / APPLICANT: HARVEY POINT DEFENSE
TESTING ACTIVITY
2835 HARVEY POINT ROAD
HERTFORD, NC 27944
2. TAX MAP PARCEL ID..2-0073-0031
PIN: 7886-94-5371
3. LOCATION: HARVEY POINT DEFENSE TESTING ACTIVITY
HARVEY POINT, NC
4. SCOPE OF PROJECT. HARVEY POINT PROPOSES THE
INSTALLATION OF A NEW 30' X 40' GRAVEL PAD
WITHIN THE LOW DENSITY AREA OF STORMWATER
PERMIT SW71B0717MOD.
5. TOPOGRAPHIC INFORMATION SHOWN ON THIS PLAN IS
BASED ON GIS & UDAR INFORMATION PROVIDED BY
THE HARVEY POINT DEFENSE TESTING ACTIVITY
FACILITY. BOUNDARY INFORMATION SHOWN IS BASED
ON DEED DESCRIPTIONS AS APPUED TO FILE
PROVIDED BY HARVEY POINT.
S. PROPERTY IS LOCATED IN F.I.R.M. ZONE 'X•. F.I.R.M.
ZONES SUBJECT TO CHANGE BY F.E.MA.
7. NO WORK IS PROPOSED INUSAGEJURISDICTIONAL
WETLANDS.
8. PROPOSED GRAVEL ACCESS DRIVE IS LOCATED WITHIN
THE LOW DENSITY DRAINAGE AREA (IL) OF SWM
PERMIT #SW7180717MOD. THE LOW DENSITY
COMPONENT OF THE PERMIT ALLOWS FOR UP TO 24%
OF TOTAL COVERAGE THE REVISED COVERAGE
BREAKDOWN FOR 1L IS AS FOLLOWS:
EXISTING COVERAGE: 495.712 SF
PROPOSED GRAVEL PAD: 1.200 SF
FUTURE COVERAGE: 323.348 SF
TOTAL: 320,251 SF
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