SW8150522_Current Permit_20160519

PAT MCCRORY
Govemor
DONALD R. VAN DER VAART
Energy, Mineral
and Land Resources
ENVIRONMENTAL QUALITY
May 19, 2016
L. Allen Ross, Manager
108 Grace, LLC
P.O. Box 2555
Wilmington, NC 28402
Subject: State Stormwater Management Permit No. SW8150522 MOD
Ross Technology Park
High Density Subdivision Wet Detention Pond Project
Brunswick County
Dear Mr. Ross:
Secretary
TRACY DAVIS
Director
The Wilmington Regional Office received a complete, modified State Stormwater Management Permit Application
for Ross Technology Park on February 25, 2016 with minor additional information received on May 19, 2016. Staff
review of the plans and specifications has determined that the project, as proposed, will comply with the Stormwater
Regulations set forth in Title 15A NCAC 2H.1000 and Session Law 2008-211. We are forwarding modified Permit
No. SW8 150522 MOD dated May 19, 2016, for the construction, operation and maintenance of the BMP's and
built -upon area associated with the subject project.
This permit shall be effective from the date of issuance until August 4, 2023, and shall be subject to the conditions
and limitations as specified therein. Please pay special attention to the conditions listed in this permit regarding the
Operation and Mainteilalice of the BMP(s), recordation of deed restrictions, certification of the BMP's, procedures
for changing ownership; transferring the permit, and renewing the permit. Failure to establish an adequate system
for operation and maintenance of the stormwater management system, to record deed restrictions, to certify the
BMP's, to transfer the permit, or to renew the permit, will result in fixture compliance problems.
The following modifications are included and covered by this permit:
Lot 211 impervious area has been reduced, lowering the overall built -upon area for the wet detention pond, which
has been redesigned in accordance with the new design criteria.
If any parts, requirements, or limitations contained in this permit are unacceptable, you have the right to request an
adjudicatory hearing by filing a written petition with the Office of Administrative Hearings (OAH). The written
petition must conform to Chapter 150B of the North Carolina General Statutes, and must be filed with the OAH
within thirty (30) days of receipt of this permit. You should contact the OAH with all questions regarding the filing
fee (if a filing fee is required) and/or the details of the filing process at 6714 Mail Service Center, Raleigh, NC
27699-6714, or via telephone at 919-431-3000, or visit their website at www.NCOAH.com. 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 Steve Pusey in the
Wilmington Regional Office, at [phone].
4mcey,
Tracy Davis, P.E., Director
Division of Energy, Mineral and. Land Resources
GDS/sgp: \\\Stormwater\Permits & Projects\2015\150522 HD\2016 05 permit 150522
cc: Phil Tripp, PE — Tripp Engineering, PC
Brunswick County Inspections
Brunswick County Engineering
Wilmington Regional Office Stormwater File
State of North Carolina I Environmental Quality I Energy, Mineral and Land Resources
127 Cardinal Drive Extension I Wilmington, NC 28405
910 796 7215 T 1 910 350 2004 F I bito://nortalmdenr.ore/web/lr/

State Stormwater Management Systems
Permit No. SW8 150522 MOD
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF ENERGY, MINERAL AND LAND RESOURCES
STATE STORMWATER MANAGEMENT PERMIT
HIGH DENSITY DEVELOPMENT
In accordance with the provisions of Article 21 of Chapter 143, General Statutes of North
Carolina as amended, and other applicable Laws, Rules, and Regulations
PERMISSION IS HEREBY GRANTED TO
108 Grace, LLC
Ross Technology Park
9192 Industrial Blvd. NE, Brunswick County
FOR THE
construction, operation and maintenance of one (1) wet detention pond in compliance with
the provisions of 15A NCAC 2H .1000 and Session Law 2008-211 (hereafter referred to as
the "stormwater rules') the approved stormwater management plans and specifications and
other supporting data as attached and on file with and approved by the Division and
considered a part of this permit.
This permit shall be effective from the date of issuance until August 4, 2023, and shall be
subject to the following specified conditions and limitations:
I. DESIGN STANDARDS
This permit is effective only with respect to the nature and volume of stormwater
described in the application and other supporting data.
2. This stormwater system has been approved for the management of stormwater runoff
as described in Section 1.6 of this permit. The runoff from all built -upon area within the
permitted drainage areas of this proiect must be directed into the permitted
stormwater control system. The stormwater control has been designed to handle the
runoff from a total of 271,200 square feet of impervious area, with 139,600 square
feet allocated to Lot 1 and 131,600 square feet allocated to Lot 2R.
3. The maximum built -upon area allowed for the entire project is 271,200 square feet.
4. The drainage areas will be limited to the amounts of built -upon area indicated in
Sections 1.2 and 1.6 of this permit, and per approved plans.
5. A 50' wide vegetative buffer must be provided and maintained adjacent surface
waters, measured horizontally from and perpendicular to the normal pool of
impounded structures, the top of bank of both sides of streams and rivers and the
mean high water line of tidal waters.
Page 2 of 9

State Stormwater Management Systems
Permit No. SW8 150522 MOD
6. The following design criteria have been provided in the wet detention pond and must
Y be maintained at design condition:
a. Drainage Area, acres:
Onsite, ft2:
Offsite, ft2:
b. Total Impervious Surfaces, ft2:
Onsite, ft2:
Offsite, ft2:
c. Average Pond Design Depth, feet:
d. TSS removal efficiency:
e. Design Storm, inches
f. Permanent Pool Elevation, FMSL:
g. Permitted Surface Area @PP, ft2:
h. Permitted Temporary Storage Volume, ft3:
i. Temporary Storage Elevation, FMSL:
j. Predevelopment 1 yr-24 hr. discharge rate, cfs:
k. Controlling Orifice:
I. Orifice Flowrate, cfs :
m. Permanent Pool Volume, ft3
n. Forebay Volume, ft3:
o. Maximum Fountain Horsepower:
p. Receiving Stream / River Basin:
q. Stream Index Number:
r. Classification of Water Body:
III. SCHEDULE OF COMPLIANCE
11.045
62,726
418,378
271,200
0
271,200
3.5
90%
1.5
35.5
31,212
53,555
37.0
8.61
3.0" O pipe
0.16
99,416
20,165
1/3
Rowell Branch / Cape Fear
18-77-1-1-1
"C; Sw"
1. No person or entity, including the permittee, shall alter any component of the
approved stormwater system shown on the approved plans unless and until the
Division has approved of the revised plan.
2. 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.
3. During construction, erosion shall be kept to a minimum and any eroded areas of the
system will be repaired immediately.
4. The permittee shall at all times provide the operation and maintenance necessary to
assure that all components of the permitted stormwater system function at design
condition. The approved Operation and Maintenance Agreement is incorporated by
reference into this permit and must be followed in its entirety and maintenance must
occur at the scheduled intervals.
5. Records of maintenance activities must be kept and made available upon request to
authorized personnel of the Division. The records will indicate the date, activity, name
of person performing the work and what actions were taken.
Page 3 of 9

State Stormwater Management Systems
Permit No. SW8 150522 MOD
6. If the permanent pool volume is greater than 30,000 cubic feet, a decorative spray
fountain will be allowed in the stormwater treatment system, subject to the following
criteria:
a. The fountain must draw its water from less than 2' below the permanent pool
surface.
b. Separated units, where the nozzle, pump and intake are connected by tubing,
may be used only if they draw water from the surface in the deepest part of the
pond.
c. The falling water from the fountain must be centered in the pond, away from
the shoreline.
d. The maximum horsepower for a fountain in this pond is 1/3 horsepower.
7. The facilities shall be 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, the permittee shall cause a certification
from an appropriate designer for the system installed to be submitted, 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 is 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.
10. All stormwater collection and treatment systems must be located in either public
rights -of -way, dedicated common areas or recorded easements. The final plats for the
project will be recorded showing all such rights -of -way, common areas and
easements, in accordance with the approved plans. Access to the stormwater
facilities for inspection and maintenance shall be maintained via appropriate recorded
easements at all times.
11. The permittee shall submit to the Director and shall have received approval for
revised plans, specifications, and calculations prior to construction, for any
modification to the approved plans, including, but not limited to, those listed below:
a. Any revision to any item shown on the approved plans, including the
stormwater management measures, built -upon area, details, etc.
b. Redesign or addition to the approved amount of built -upon area or to the
drainage area.
C. Further development, subdivision, acquisition, lease or sale of any, 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.
d. Filling in, altering, or piping of any vegetative conveyance shown on the
approved plan.
e. The construction of any future BUA listed on the application.
12. Prior to transfer of the permit, the stormwater facilities will be inspected by Division
personnel. The project and the stormwater facility must be in substantial compliance
with all permit conditions. Any items not in substantial compliance must be repaired,
replaced or restored to design condition prior to the transfer. Records of maintenance
activities performed to date will be required.
Page 4 of 9

State Stormwater Management Systems
Permit No. SW8 150522 MOD
1.3. 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.
14. Prior to the sale of any lot, the following deed restrictions must be recorded:
a. The following covenants are intended to ensure ongoing compliance with State
Stormwater Management Permit Number SW8 150522, 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.
f. The maximum built -upon area per lot is 139,600 square feet for Lot 1 and
131,600 square feet for Lot 2R. This allotted amount includes any built -upon
area constructed within the lot property boundaries, and that portion of the
right-of-way between the front lot line and the edge of the pavement. Built upon
area includes, but is not limited to, structures, asphalt, concrete, gravel, brick,
stone, slate, coquina and parking areas, but does not include raised, open
wood decking, or the water surface of swimming pools.
g. All runoff from the built -upon areas on the lot must drain into the permitted
system. This may be accomplished through providing roof drain gutters, which
drain to the pond or street, grading the lot to drain toward the street or directly
into the pond, or grading perimeter swales and directing them into the pond or
street.
h. Built -upon area in excess of the permitted amount will require a permit
modification.
i. All affected lots shall maintain a 5V wide vegetative buffer adjacent to surface
waters, measured horizontally from and perpendicular to the normal pool of
impounded .structures, the top of bank of each side of streams and rivers and
the mean high water line of tidal waters.
j. Any individual or entity found to be in noncompliance with the provisions of a
stormwater management permit or the requirements of the Stormwater Rules is
subject to enforcement procedures as set forth in G.S. 143, Article 21.
k. Each lot within the subdivision whose ownership is not retained. by the
permittee, must submit a separate Offsite Stormwater Management Permit
application package to the Division of Energy, Mineral and Land Resources
and receive a permit prior to any construction on the lot.
I. If permeable pavement BUA credit is requested, the property owner must
submit a request, with supporting documentation, to the permittee and receive
approval prior to construction.
15. 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.
Page 5 of 9

State Stormwater Management Systems
Permit No. SW8 150522 MOD
III. GENERAL CONDITIONS
1. Any individual or entity found to be in noncompliance with the provisions of a
stormwater management permit or the Stormwater rules is subject to enforcement
procedures as set forth in NCGS 143 Article 21.
2. 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.
3. In the event that the facilities fail to perform satisfactorily 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.
Additional or replacement stormwater management systems shall receive a permit
from the Division prior to construction.
4. This permit is not transferable to any person or entity except after notice to and
approval by the Director. The permittee shall submit a completed and signed
Name/Ownership Change Form, accompanied by the supporting documentation as
listed on the form, to the Division of Energy, Mineral and Land Resources at least 60
days prior to any one or more of the following events:
a. An ownership change including the sale or conveyance of the project area in
whole or in part, except in the case of an individual lot sale that is made subject
to the recorded deed restrictions;
b. The sale or conveyance of the common areas to a Homeowner's or Property
Owner's Association, subject to the requirements of Session Law 2011-256;
C. Bankruptcy;
d. Foreclosure, subject to the requirements of Session Law 2013-121;
e. Dissolution of the partnership or corporate entity, subject to NCGS 57D-2-01(e)
and NCGS 57D-6-07;
f. A name change of the current permittee;
g. A name change of the project;
h. A mailing address change of the permittee;
5. The permittee is responsible for compliance with all permit conditions until such time
as the Division approves the transfer request. Neither the sale of the project, in whole
or in part, nor the conveyance of common area to a third party constitutes an
approved transfer of the stormwater permit.
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 modified, revoked,
terminated or renewed. 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.
8. Approved plans and specifications for this project are incorporated by reference and
are enforceable parts of the permit. The permittee shall maintain a copy of the permit,
O&M agreements, and the approved plans at all times.
9. 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.
Page 6 of 9

State Stormwater Management Systems
Permit No. SW8 150522 MOD
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 2006-246, Title
15A NCAC 2H.1000, and NCGS 143-215.1 et.al.
11. The permittee shall submit a permit renewal application request at least 180 days
prior to the expiration date of this permit. The renewal request must include the
appropriate application, documentation and the processing fee.
Permit updated, modified and reissued this the 19th day of May, 2016.
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
ivision of Energy, Mineral and Land Resources
By Authority of the Environmental Management Commission
Permit Number SW8 150522 MOD
Page 7 of 9

State Stormwater Management Systems
Permit No. SW8 150522 MOD
Ross Technology Park
Stormwater Permit No. SW8 150522
Brunswick 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 specifications:
Signature
Registration Number
Date
SEAL
Page 8 of 9

Permit Number :'f;a /'- MOO
(to be provided by DWQ)
Drainage Area Number:
Wet Detention Basin Operation and Maintenance Agreement
I will keep a maintenance record on this BMP. This maintenance record will be kept in a
log in a known set location. Any deficient BMP elements noted in the inspection will be
corrected, repaired or replaced immediately. These deficiencies can affect the integrity
of structures, safety of the public, and the removal efficiency of the BMP.
The wet detention basin system is defined as the wet detention basin,
pretreatment including forebays and the vegetated filter if one is provided.
This system (check one):
❑ does ® does not incorporate a vegetated filter at the outlet.
This system (check one):
❑ does ® does not incorporate pretreatment other than a forebay.
Important maintenance procedures:
- Immediately after the wet detention basin is established, the plants on the
vegetated shelf and perimeter of the basin should be watered twice weekly if
needed, until the plants become established (commonly six weeks).
- No portion of the wet detention pond should be fertilized after the first initial
fertilization that is required to establish the plants on the vegetated shelf.
- Stable groundcover should be maintained in the drainage area to reduce the
sediment load to the wet detention basin.
- If the basin must be drained for an emergency or to perform maintenance, the
flushing of sediment through the emergency drain should be minimized to the
maximum extent practical.
- Once a year, a dam safety expert should inspect the embankment.
After the wet detention pond is established, it should be inspected once a month and
within 24 hours after every storm event greater than 1.0 inches (or 1.5 inches if in a
Coastal County). Records of operation and maintenance should be kept in a known set
location and must be available upon request. rM r
ry
Inspection activities shall be performed as follows. Any proble ':tha f2*d shall
be repaired immediately. `
YV.
BMP element:
Potentialproblem:
How I will remediate theproblem:
The entire BMP
Trash debris is present.
Remove the trash debris.
The perimeter of the wet
detention basin
Areas of bare soil and/or
erosive gullies have formed.
Regrade the soil if necessary to
remove the gully, and then plant a
ground cover and water until it is
established. Provide lime and a
one-time fertilizer application.
Vegetation is too short or too
Maintain vegetation at a height of
I
long.
approximately six inches.
Form SW401-Wet Detention Basin O&M-Rev.4 Page 1 of 4

Permit Number: �W ? moto
(to be provided by DWQ)
Drainage Area Number:
BMP element:
Potentialproblem:
THow I will remediate the problem:
The inlet device: pipe or
swale
The pipe is clogged.
Unclog the pipe. Dispose of the
sediment off -site.
The pipe is cracked or
Replace the pipe.
otherwise damaged.
Erosion is occurring in the
: Regrade the swale if necessary to
swale.
smooth it over and provide erosion
control devices such as reinforced
turf matting or riprap to avoid
future problems with erosion.
The forebay
Sediment has accumulated to
Search for the source of the
a depth greater than the
sediment and remedy the problem if
original design depth for
possible. Remove the sediment and
sediment storage.
dispose of it in a location where it
will not cause impacts to streams or
the BMP.
Erosion has occurred.
Provide additional erosion
protection such as reinforced turf
matting or riprap if needed to
prevent future erosion problems.
Weeds are present.
Remove the weeds, preferably by
hand. If pesticide is used, wipe it on
the plants rather than spraying.
The vegetated shelf
Best professional practices
Prune according to best professional
show that pruning is needed
practices
to maintain optimal plant
health.
Plants are dead, diseased or
Determine the source of the
dying.
problem: soils, hydrology, disease,
etc. Remedy the problem and
replace plants. Provide a one-time
fertilizer application to establish the
ground cover if a soil test indicates
it is necessary.
Weeds are present.
Remove the weeds, preferably by
hand. If pesticide is used, wipe it on
the plants rather than spraying.
The main treatment area
Sediment has accumulated to
Search for the source of the
a depth greater than the
sediment and remedy the problem if
original design sediment
possible. Remove the sediment and
storage depth.
dispose of it in a location where it
will not cause impacts to streams or
the BMP.
Algal growth covers over
Consult a professional to remove
50% of the area.
and control the algal growth.
Cattails, phragmites or other
Remove the plants by wiping them
invasive plants cover 50 % of
with pesticide (do not spray).
the basin surface.
FEB 2 5 201b
Form SW401-Wet Detention Basin O&M-Rev.4 RI Y: Page 2 of 4

Permit Number: Svj'? J Sao S'Z 2 BOA
(to be provided by DWQ)
Drainage Area Number:
BMP element:
Potentialproblem:
How I will remediate the problem:
The embankment
Shrubs have started to grow
Remove shrubs immediately.
on the embankment.
Evidence of muskrat or
Use traps to remove muskrats and
beaver activity is present.
consult a professional to remove
beavers.
A tree has started to grow on
Consult a dam safety specialist to
the embankment.
remove the tree.
An annual inspection by an
Make all needed repairs.
appropriate professional
shows that the embankment
needs repair. if applicable)
The outlet device
Clogging has occurred.
Clean out the outlet device. Dispose
of the sediment off -sine.
The outlet device is damaged
Repair or replace the outlet device.
The receiving water
Erosion or other signs of
Contact the local NC Division of
damage have occurred at the
Water Quality Regional Office, or
outlet.
the 401 Oversight Unit at 919-733-
1786.
The measuring device used to determine the sediment elevation shall be such
that it will give an accurate depth reading and not readily penetrate into
accumulated sediments.
When the permanent pool depth reads 5 feet in the main pond, the sediment
shall be removed.
When the permanent pool depth reads 3 feet in the forebay, the sediment shall
be removed.
Sediment Removal
Bottom
BASIN DIAGRAM
ill in the blanks)
Permanent Pool Elevation 35.5
32.5 Pe an Pool
--------------- - Volume Sediment Removal Elevation30.5 Volume
31.5 -ft Min. -------------------------------------------- ------
Sediment Bottom Elevation 29.5 1-ft r
Storage Sedimej
Storage
FOREBAY MAIN POND
Form SW401-Wet Detention Basin O&M-Rev.4
ECEIVF.
MAY 192016
BY:
Page 3 of 4

Permit Number:_ ,sW 9 1 SD :5-7—'Z Iisv o
(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:Ross Technology Park
BMP drainage area number:1
Print name:L Allen Ross
Title:Manager
Address:P.O. Box 2555, Wilmington, NC 28402
Phone:[phone] _01
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.
I, -e nes a sT Wof o r d , a Notary Public for the State of
C, , County of W Qk1 I-iaROV r , do hereby certify that
L. Allen O 55 personally appeared before me this a
day of Fib- , 2 O 1 b , and acknowledge the due execution of the
forgoing wet detention basin maintenance requirements. Witness my hand and official
seal,
Teresa J. Bigford
Notary Public
New Hanover County, NC
SEAL
My commission expires q f -�_ 01 a? 0
by:
FEB 2 5 201-
Form SW401-Wet Detention Basin O&M-Rev.4 Page 4 of 4

Permit Number:
(to be provided by DWQ)
Drainage Area Number:
Wet Detention Basin Operation and Maintenance Agreement
I will keep a maintenance record on this BMP. This maintenance record will be kept in a
log in a known set location. Any deficient BMP elements noted in the inspection will be
corrected, repaired or replaced immediately. These deficiencies can affect the integrity
of structures, safety of the public, and the removal efficiency of the BMP.
The wet detention basin system is defined as the wet detention basin,
pretreatment including forebays and the vegetated filter if one is provided.
This system (check one):
❑ does ® does not incorporate a vegetated filter at the outlet.
This system (check one):
❑ does ® does not incorporate pretreatment other than a forebay.
Important maintenance procedures:
— Immediately after the wet detention basin is established, the plants on the
vegetated shelf and perimeter of the basin should be watered twice weekly if
needed, until the plants become established (commonly six weeks).
1VG pOT}ifGif Of the wet deters ion pGnd SILOu1d be feTtiliZed after the ffrSt mitfai
fertilization that is required to establish the plants on the vegetated shelf.
— Stable groundcover should be maintained in the drainage area to reduce the
sediment load to the wet detention basin.
— If the basin must be drained for an emergency or to perform maintenance, the
flushing of sediment through the emergency drain should be min;m;zed to the
maximum extent practical.
-- Once a year, a dam safety expert should inspect the embankment.
After the wet detention pond is established, it should be inspected once a month and
within 24 hours after every storm event greater than 1.0 inches (or 1.5 inches if in a
Coastal County). Records of operation and maintenance should be kept in a known set
location and must be available upon request. macelven
Inspection activities shall be performed as follows. Any
be repaired immediately.
BMP element:
Potentialproblem-
How I will remediate theproblem:
The entire BMP
Trash/ debris is present.
Remove the trash/ debris.
The perimeter of the wet
Areas of bare soil and/or
Regrade the soil if necessary to
detention basin
erosive gullies have formed.
remove the gully, and then plant a
ground cover and water until it is
established. Provide lime and a
one-time fertilizer application.
Vegetation is too short or too
Maintain vegetation at a height of
long.
approximately six inches.
Form SW401-Wet .Detention Basin O&M-Rev.4 Page 1 of 4

Permit Number:
(to be provided by DWQ)
Drainage Area Number:
' BMP element:
Potentialproblem:
How I will remediate theproblem:
The inlet device: pipe or
The pipe is clogged.
Unclog the pipe. Dispose of the
swale
sediment off -site.
The pipe is cracked or
Replace the pipe.
otherwise damaged.
G
Erosion is occurring in the
swale.
Regrade the swale if necessary to
smooth it over and provide erosion
control devices such as reinforced
turf matting or riprap to avoid
future problems with erosion.
The forebay
Sediment has accumulated to
Search for the source of the
'
a depth greater than the
sediment and remedy the problem if
original design depth for
possible. Remove the sediment and
sediment storage.
dispose of it in a location where it
will not cause impacts to streams or
the BMP.
Erosion has occurred.
Provide additional erosion
protection such as reinforced turf
matting or riprap if needed to
prevent future erosion problems.
Weeds are present.
Remove the weeds, preferably by
hand. If pesticide is used, wipe it on
the plants rather than spraying.
The vegetated shelf
Best professional practices
Prune according to best professional
show that pruning is needed
practices
to maintain optimal plant
health.
Plants are dead, diseased or
Determine the source of the
dying.
problem: soils, hydrology, disease,
etc. Remedy the problem and
replace plants. Provide a one-time
fertilizer application to establish the
ground cover if a soil test indicates
it is necessary.
Weeds are present.
Remove the weeds, preferably by
hand. If pesticide is used, wipe it on
the plants rather than spraying.
The main treatment area
Sediment has accumulated to
Search for the source of the
a depth greater than the
sediment and remedy the problem if
original design sediment
possible. Remove the sediment and
storage depth.
dispose of it in a location where it
will not cause impacts to streams or
the BMP.
Algal growth covers over
Consult a professional to remove
50% of the area.
and control the algal growth.
Cattails, phragmites or other
Remove the plants by wiping them
invasive plants cover 50% of
with pesticide (do not spray).
the basin surface.
C E IVE
MAY 2 8 2015
Form SW401-Wet Detention Basin O&M-Rev.4 BY. Page 2 of 4

Permit Number:
(to be provided by DWQ)
Drainage Area Number:
BMP element:
Potentialproblem:
How I will remediate theproblem:
The embankment
Shrubs have started to grow
Remove shrubs immediately.
on the embankment.
Evidence of muskrat or
Use traps to remove muskrats and
beaver activity is present.
consult a professional to remove
beavers.
A tree has started to grow on
Consult a dam safety specialist to
the embankment.
remove the tree.
An annual inspection by an
Make all needed repairs.
appropriate professional
shows that the embankment
needs repair. if applicable)
The outlet device
Clogging has occurred.
Clean out the outlet device. Dispose
of the sediment off -site.
The outlet device is damaged
Repair or replace the outlet device.
The receiving water
Erosion or other signs of
Contact the local NC Division of
damage have occurred at the
Water Quality Regional Office, or
outlet.
the 401 Oversight Unit at 919-733-
1786.
The measuring device used to determine the sediment elevation shall be such
that it will give an accurate depth reading and not readily penetrate into
accumulated sediments.
When the permanent pool depth reads 6 feet in the main pond, the sediment
shall be removed.
When the permanent pool depth reads 2.5 feet in the forebay, the sediment
shall be removed.
Sediment Removal
Bottom
BASIN DIAGRAM
ill in the blanks)
0 Permanent Pool Elevation 32.5
30.0 Pe anen Pool
- - - - - - - - - - - - - Volume Sediment Removal Elevation 26.5 Volume
29.0 -f Min.
------------------------------------------ ------
Sediment Bottom Elevation 25.5 1-ft n
Storage Sedimei
Storage
FOREBAY MAIN POND
Form SW401-Wet Detention Basin O&M-Rev.4
ECEIV .-
MAY 2 0 2015 Page 3 of 4
BY-

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:Ross Technology Park
BMP drainage area number:1
Print name:L Allen Ross
Title:Manager
Address:P.O. Box 2555, Wilmington, NC 28402
S
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.
l lYl3 F#101I17.�
a MIMI M��
a Notary Public for the State of
do hereby certify that
j AUpip Ras S personally appeared before me this
day of , and acknowledge the due execution of the
forgoing wet detention basin maintenance requirements. Witness my hand and official
seal, Qt&,L- C
e1OTAA�.
SEAL
My commission expires /6—)5 L
ECIVE
MAY 2 0 2015
Form SW401-Wet Detention Basin O&M-Rev.4
BY:
Page 4 of 4

DEMLR USE ONLY
Date]Received
Fee Paid
Permit Number
1,5225,
_
Appliable Rules: ❑ Coastal SW -1995 El Coastal SW - 2008~ ❑ Ph II - Post Construction
(select all that apply) ❑ Non -Coastal SW- HQW/ORW Waters ❑ Universal Stormwater Management Plan
❑ Other WQ Mgmt Plan:
State of North Carolina
Department of Environment and Natural Resources
Division of Energy, Mineral and Land Resources
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
This form may be photocopied for use as an original
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.):
Ross Technology Park
2. Location of Project (street address):
9192 Industrial Blvd NE
City:Leland County:Brunswick Zip:28451
3. Directions to project (from nearest major intersection):
From the intersection of Industrial Blvd. NE and Enterprise Drive NE travel approx. 0.40 miles east on
Industrial Blvd. NE. Site is on the left.
4. Latitude:34° 16' 22" N Longitude:780 03' 33" 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 SWLI 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 numberSW8150522 , its issue date (if known)08/04/15 and the status of
construction: ®Not Started ❑Partially Completed* ❑ Completed* *provide a designer's certification
2. Specify the type of project (check one):
Flow 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 pumber,
if assigned, and the previous name of the project, if ' ntl"y
proposed,
4. a. Additional Project Requirements (check applicable blanks; information on req' a W1`an b
.:
obtained by contacting the Customer Service Center at 1-877-623-6748):
❑CPXA Major ZSedirLentation/Erosion Control: 4.5 ac EUsk rea
❑NPDES Industrial Stormwater ❑404/401 Permit: Proposed Impacts
b.If 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? ❑No ❑Yes
If yes, see S.L. 2012-200, Part VI: httl2://12ortal.ncdenr.org/web/Ir/rules-and-regulations
Form SWU-101 Version Oct. 31, 2013 Page 1 of 6

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:108 Grace, LLC
Signing Official & Title:L. Allen Ross, Manager
b. Contact information for person listed in item 1a above:
Street Address:P.O. Box 2555
City: Wilminaon State:NC Zip:28402
Mailing Address (if applicable):
City:
Phone: (910 ) 763-8530
Emafl:[e-mail]
State: Zip:
Fax: ( 1
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 Owner/ Organization:
Signing Official &
b. Contact information for person listed in item 2a above:
Street Address:
City:
State: Zip:
Mailing Address (if applicable):
City: State: Zip:
Phone:
Email:
Fax: ( )
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
City:_
Phone:
Email:
Fax:
4. Local jurisdiction for building permits: Brunswick County
Point of Contact: Phone #:
Form SWU-101 Version Oct. 31, 2013 Page 2 of 6

IV. PROJECT INFORMATION
1. In the space provided below, briefly summarize how the stormwater runoff will be treated.
wet detention basin
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 H - Post Construction
3. Stormwater runoff from this project drains to the Cape Fear River basin.
4. Total Property Area:12.33 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+:12.33 acres
+ Total project area shall be calculated to exclude the following: the normal pool of impounded structures, the area
between the banks of streams and rivers, the area below the Normal Hi h Water (NHM line or Mean High Water
W) (MHline, and coastal wetlands landward from the NHW (or NX line. The resultant project area 2s used to
calculate overall percent built upon area (BUA). Non -coastal wetlands landward of the NHW (or MHW) line may
be included in the total project area.
8. Project percent of impervious area: (Total Impervious Area / Total Project Area) X 100 = 50.5 %
9. How many drainage areas does the project have?1 (For high density, count 1 for each proposed engineered
stormwater 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 _
Drainage Area _
Drainage Area _
Receiving Stream Name
Rowell Branch
Stream Class *
C;Sw
Stream Index Number *
18-77-1-1-1
Total Drainage Area (sf)
481,104
On -site Drainage Area (sf)
62,726
Off -site Drainage Area (so
418,378
Proposed Impervious Area** s
271,200
% Impervious Area"* total
56.4
Im ervioue* Surface Area
Drainage Area 1
Drainage Area _
Drainage Area _
Drainage Area _
On -site Buildings/Lots (so
-
On -site Streets (so
On -site Parking (so
-
;' Z:i b
Ori-site Sidewalks (sf)
-
A
Other on -site (so
-
FEB 2
Future (so
Off -site (so
271,200
Existing BUA*** (so
-
Total (sf):
271,200
Stream Class and Index Number can be determined at: ht42,*ortal.ncdenr.or fwq ebfwq&s/csu/classifications
Impervious area is defined as the built upon area including, but not limited to, buildings, roads, parking areas,
sidewalks, gravel areas, etc.
'Report only that amount of existing BLL4 that will remain after development. Do not report any existing BUA that
is to be removed and which will be replaced by new BUA.
Form SWU-101 Version Oct. 31, 2013 Page 3 of 6

11. How was the off -site impervious area listed above determined? Provide documentation.
Projects in Union County: Contact DEMLR Central Dice 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 1 SA 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 http://portal.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
htt2://portal.ncdenr.org/web/3yq/ws/su/statesw/forms docs. 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 athtW://portal.ncdenr.org/web/wg/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 http://portal.ncdenr.org/web/wq/ws/su/statesw/forms_docs.
Initials
1. Original and one copy of the Stormwater Management Permit Application Form. 1
2. Original and one copy of the signed and notarized Deed Restrictions & Protective Covenants
Form. (if required as per Part VII below)
1 Original of the applicable Supplement Form(s) (sealed, signed and datedN and O&M ' 1
agreement(s) for each BMP.
4. Permit application processing fee of $505 payable to NCDENR. (For an Express review, refer to
http://www.envhelp.org/pages/onesto�express.hbnl 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 4401
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). d1y
8. Two sets of plans folded to 8.5" x 14" (sealed, signed, & dated), including: !Z
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 NHi 4f-fida
.'�
waters, and any coastal wetlands landward of the MHW or NHW lines.
• Delineate the vegetated buffer landward from the normal pool eleva ' ° i of i 014E20it)
structures, the banks of streams or rivers, and the MHW (or NHW) of al waters.
i. Dimensioned property/project boundary with bearings Or distances.
j. Site Layout with all BUA identified and dimensioned. BY.
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.
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).
Fonn SWU-101 Version Oct. 31, 2013 Page 4 of 6

p. Vegetated buffers (where required).
9. Copy of any applicable soils report with the associated SHWT elevations (Please identify �(!e
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: Schedule a site visit for DEMLR to verify the SHWT prior
to submittal, [phone].)
10. A copy of the most current property deed. Deed book: 3593 Page No: 0977L(,%
11. 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 211.1003(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.secretary.state.nc.us/Corporations/CSearch aspx
VII. 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 httplportal.ncdenr.org/web/Ir/state-stormwater-
forms docs. 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 ensuring
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:Phillip G. Tripp, P.E.
Consulting Firm: Tripp Engineering
Mailing Address:419 Chestnut Street
City: Wilmington State:NC Zip:28401
Phone: (910 ) 763-5100 Fax: (910 ) 763-5631
Emaillrippenggec.rr.com
IX. PROPERTY OWNER AUTHORIZATION (if Contact Information, item 2 has been filled out, complete this
section)
I, (print or type name of person listed in Contact Information, item 2a) . certify that I
own the property identified in this permit application, and thus give permission to (print or type name of person
listed in Contact Information, item 1a) with (print or type name of organization listed in
Contact Information, item 1 a) to develop the project as currently proposed. A copy of
the lease agreement or pending property sales contract has been provided with the submittal,.Mijckindicates the
party responsible for the operation and maintenance of the stormwater s st
{ S.
FEB 252014
Form SWU-101 Version Oct. 31, 2013 Page 5 of 6

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 Wspnnee pf cenalties of up to $25,000 per day, pursuant to NCGS 143-215.6.
Date: i2T �f f Co
I, _ !'er"eSQ cT B 1 Q 4 t d a Notary Public for the State of N r-, , County of
Nw )4& lanu.e.r , do hereby certify that L, . Allen Ross personally appeared
before me this A day of JE1r 2101(o . and acknowledge the due execution of the application for
a stormwater permit. Witness my hand and official seal, Vldw a
&44PAD
of
Teresa J. Bigford
Notary Public
New Hanover County, NC
X. APPLICANT'S CERTIFICATION
SEAL
My commission expires Ll /2a { :2 D
I, (print or type name of person listed in Contact Information, item 1a) L. Allen Ross
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 sto wa 15A NCAC 2H .1000 and any other applicable state stormwater requirements.
Date: 2 % 2 `F 1 1
I, / RiZ SQ cT' a D d a Notary Public for the State of N C County of
Win %1 �, do hereby certify that f . a c t-e ll R o 5 S personally appeared
before me this Zqday of F c2O 16 and acknowledge the due execution of the application for
a stormwater permit. Witness my hand and official seal, k0 Ad" o A
Teresa J. Bigford
Notary Public
New Hanover County, NC
SEAL
My commission expires Q /oa/o) D
' FEB 2 5 20SR)
Form SW-101 Version Oct. 31, 2013 Page 6 of 6

Permit
(to be provided by DWQ)
AGA
NCDENR
Protect name
Contact person
Phone number
Date
Drainage area number
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
WET DETENTION BASIL SUPPLEMENT
This form must be filled out, printed and submitted.
The Required Items Checklist (Part 111) must be printed, filled out and submitted along with ail of the required information.
2119/2016
Ross
Pnr4
PG
o��F W AT�c9QG
'y G
Ili. DESIGN INFOi 55T. io --- -�--
��
Site Characteristics
Drainage area
481,104 f
Impervious area, post -development
271,200 fe
°% impervious
56.37 %
Design rainfall depth
1.5 in
Storage Volume: Non -SA Waters
Minimum volume required 33,517 f?
Volume provided
53,555 if
OK, volume provided is equal to or in excess of volume required.
Storage Volume: SA Waters
1.5" runoff volume
Pre -development 1-yr, 24-hr runoff
Post -development 1-yr, 24-hr runoff
t
Minimum volume required
to
Volume provided
tt3
Peak Flow Calculations
Is the pre/post control of the 1yr 24hr storm peak flow required? N
(Y or N)
1-yr, 24-hr rainfall depth
in
Rational C, pre -development
(unitiess)
Rational C, post -development
(unitless)
Rainfall intensity:1-yr, 24-hrstorm
in/hr
Pre -development 1-yr, 24-hr peak flow
8.61 fts/sec
Post -development 1-yr, 24-hr peak flow
26.83 tt3/sec
Pre/Post 1-yr, 24-hr peak flow control
18.22 fO/sec
Elevations
Temporary pool elevation
37.00 fmsl
Permanent pod elevation
35.50 fmsl
SHWT elevation (approx. at the pens. pool elevation)
fmsl
Top of 1 Oft vegetated shelf elevation
36-00 fmsl
Bottom of 1 Oft vegetated shelf elevation
35.00 fmsl
.•-,� "'
Sediment deanout, top elevation (bottom of pond)
30 50 fmsi
Sediment cleanout, bottom elevation
29.50 fmsl
Sediment storage provided
1.00 tt
FEB 2 5 2fl�
Is there additional volume stored above the state -required temp. pool? Y
(Y or N)
Elevation of the top of the additional volume
37 0 fmsi
OK _
Form SW401-Wet Detention Bas1n-Rev.9-V18/12 Parts I. & II. Design Summary, Page 1 of 2

Permit No.
(to he provided by DIME)
Surface Areas
Area, temporary pool 38,307 ft
Area REQUIRED, permanent pool 27,423 i
SAIDA ratio 5.70 (unitless)
Area PROVIDED, permanent pool, Ap,,,,_pw 31,212 fe OK
Area, bottom of 1Oft vegetated shelf, Ab„ ,r 27,195 fe
Area, sediment cleanout, top elevation (bottom of pond), Abot,.d 11,174 ft`
Volumes
Volume, temporary pool
Volume, permanent pool, Vp,,,L_Pw
Volume, forebay (sum of forebays If more than one forebay)
Forebay % of permanent pool volume
SAIDA Table Data
Design TSS removal
Coasta! SA/DA TAW 11sar19
Mountain/Piedmont SAIDA Table Used?
SAIDA ratio
Average depth (used in SAIDA table):
Calculation option 1 used? (See Figure 10-2b)
Volume, permanent pool, V,.,,_p,,,
Area provided, permanent pool, A,.„,,y
Average depth calculated
Average depth used in SAIDA, da,,, (Round to nearest 0.5ft)
Calculation option 2 used? (See Figure 10-2b)
Area provided, permanent pool, Ap.,,w
Area, bottom of 10ft vegetated shelf, Aw h,
Area, sediment cleanout, top elevation (bottom of pond), AW-P d
"Depth" (distance b/w bottom of 101t shelf and top of sediment)
Average depth calculated
Average depth used in SAIDA, d,,,, (Round to down to nearest 0.5ft)
Drawdown Calculations
Drawdown through orifice?
Diameter of orifice (if circular)
Area of orifice (if -non -circular)
Coefficient of discharge (Co)
Driving head (H,)
Drawdown through weir?
Weir type
Coefficient of discharge (Q
Length of weir (L)
Driving head (H)
Pre -development 1-yr, 24-hr peak flow,
Post -development 1-yr, 24-hr peak flow
Storage volume discharge rate (through discharge orifice or weir)
Storage volume drawdown time
Additional Information
Vegetated side slopes
Vegetated shelf slope
Vegetated shelf width
Length of flowpath to width ratio
Length to width ratio
Trash rack for overflow & orifice?
Freeboard provided
Vegetated filter provided?
Recorded drainage easement provided?
Capures all runoff at ultimate build -out?
Drain mechanism for maintenance or emergencies is:
53,555 ft OK
99,416 ft
20,165 fO
20.3% % OK
90 %
Y (Y or N)
N (Y or N)
5.70 (unitless)
N (Y or N)
99,416 ie
31,212 ft
it Need 3 it min.
It
Y (YorN)
31,212 ft1
27,195 ft`
11,174 fl2
4.ff It
3.65 ft OK
3.5 fit OK
Y (Y or N)
3.00 in
in
0.60 (unitless)
1.02 It
N (Y or N)
(uniftess)
(unitless)
it
it
8.61 a/sec
26.83 fP/sec
0.17 ft3/sec
2.32 days OK, draws down in 2-5 days.
3 :1 OK
10 :1 OK
100 it OK�h
3 :1 OK `�
Y 3.0 Y or N) OK FEB 2 5 2013 OK
1.0 It OK
Y (Y or N) OK
Y'
Y (Y or N) OK
Y (Y or N) OK
pump
Form SW401-Wet Detention Bas1n,-Rev.S-4/18/12 Parts I. & II. Design Summary, Page 2 of 2

Permit No.
(to be provided by DWQ)
Ill. REQUIREP ITEMS CHECKUS-T
Please indicate the page or plan sheet numbers where the supporting documentation can be found. An incomplete submittal package will
result in a request for additional information. This will delay final review and approval of the project. Initial in the space provided to
indicate the followling dasigr. requirements have veer: met. If the applicant has designated an agent, the agent may initlai below. If a
requirement has not been met, attach justification.
Pagel Plan
Initials
Sheet No.
C2,C4,DA1
1. Plans (1" - 50' or larger) of the entire site showing:
- Design at ultimate build -out,
- Off -site drainage (if applicable),
- Delineated drainage basins (include Rational C coefficient per basin),
Basin dimensions,
Pretreatment system,
High flow bypass system,
Maintenance access,
Proposed drainage easement and public right of way (ROM,
Overflow device, and
Boundaries of drainage easement.
C4
2. Partial plan (1" = 30' or larger) and details for the wet detention basin showing:
- Outlet structure with trash rack or similar,
- Maintenance access,
- Permanent pool dimensions,
- Forebay and main pond with hardened emergency spillway,
- Basin cross-section,
- Vegetation specification for planting shelf, and
- Filter strip.
C4
3. Section view of the wet detention basin (1" = 20' or larger) showing:
- Side slopes, 3:1 or lower,
- Pretreatment and treatment areas, and
- Inlet and outlet structures.
C4
4. If the basin is used for sediment and erosion control during construction, clean out of the basin is specified
on the plans prior to use as a wet detention basin.
attached
5. A table of elevations, areas, incremental volumes & accumulated volumes for overall pond and for forebay,
I
o verify volume provided.
Ll
C4
6. A construction sequence that shows how the wet detention basin will be protected from sediment until the
entire drainage area is stabilized.
..J
attached
7. The supporting calculations.
attached
8. A copy of the signed and notarized operation and maintenance (0&M) agreement.
attached
9. A copy of the deed restrictions (if required).
10. A soiis report that is based upon an actual field investigation, soil borings, and infiltration tests. County
soil maps are not an acceptable source of soils information...,_ - ••
i
FEB 2 5 2013
Form SW401-Wet Detention Basin-Rev.9-4/18/12 Part III. Required Items Checklist, Page 1 of 1

Permit No.
(to be provided by DWQ)
AIKW
Op W A t�9
RA
o pa
? r
NCDENR o Y
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CER T IFICATION APPLICATION FORM
WET DETENTION BASIN SUPPLEMENT
This form must be filled out, printed and submitted.
The Required Items Checklist (Part Ill) must be printed, filled out and submitted akmg with all of the required information.
I. PROJECT INFORMATION
Project name Ross Technology Park
Contact person Phillip G. Tripp, PE
Phone number 910-763-5100
Date 5/21/2015
Drainage area number 1
II. DESIGN INFORMATION
Site Characteristics
Drainage area
481,104 fe
Impervious area, post -development
336,900 fe
% impervious
70.03 %
Design rainfall depth
1.5 in
Storage Volume: Non -SA Waters
Minimum volume required
Volume provided
Storage Volume: SA Waters
1.5" runoff volume
Pre -development 1-yr, 24-hr runoff
Post -development 1-yr, 24-hr nlnoff
Minimum volume required
Volume provided
Peak Flow Calculations
Is the prelpost control of the lyr 24hr storm peak flow required?
1-yr, 24-hr rainfall depth
Rational C, pre -development
Rational C, post -development
Rainfall intensity: 1-yr, 24-hr storm
Pre -development 1-yr, 24-hr peak flow
Pnst-development 1-yr, 24-hr peak flare
Pre/Post 1-yr, 24-hr peak Flow control
Elevations
Temporary pool elevation
Permanent pool elevation
SHWT elevation (approx. at the perm. pool elevation)
Top of 10ft vegetated shelf elevation
Bottom of 10ft vegetated shelf elevation
Sediiiient deanoui, top elevation (bottom of pond)
Sediment cleanout, bottom elevation
Sediment storage provided
is there additional volume stored above the state -required temp. pool?
Elevation of the top of the additional volume
40,908 fe
47,445 ft3
ft3
ft3
ft
ft
ft
(Y or N)
in
(unitless)
_ (unitless)
_ in/hr
8.61 {f3/sec
31.24 ft3/sec
22.63 ft3/sec
34.00 fmsl
32.50 fmsl
fmsl
33.00 fmsl
32.00 fmsl
25.50 fmsl
24.56- fmsl
1.00 ft
Y (Y or N)
OK, volume provided is oqual to or in excess of volume required.
34.0 fmsl OK
ECEIVE
MAY 2 C 2015
BY -
Form SW401-Wet Detention Basin-Rev.9-4/18/12 Parts I. & It. Design Summary, Page 1 of 2

Permit No.
(to be provided by DWQ)
11. DESIGN iNFORMATION
Surface Areas
Area, temporary pool 34,150 fe
Area REQUIRED, permanent pool 26,461 ft
SAIDA ratio 5.50 (unitless)
Area PROVIDED, permanent pool, APermjwl
27,356 ft
OK
Area, bottom of 1Oft vegetated shelf, Ate, hdt
23,569 fe
Area, sediment cleanout, top elevation (bottom of pond), Abd and
6,053 fe
Volumes
Volume, temporary pool
47,445 ft3
OK
Volume, permanent pool, Vpe -P d
102,884 ft3
Volume, forebay (sum of forebays if more than one forebay)
20,399 ft3
Forebay % of permanent pool volume
19.8% %
OK
SA(DA Table Data
Design TSS removal
90 %
Coastal SAIDA Table Used?
Y (Y or N)
Mountain/Piedmont SAIDA Table Used?
N (Y or N)
SAIDA ratio
5.50 (unitless)
Average depth (used in SAIDA table):
Calculation option 1 used? (See Figure 10-2b)
N (Y or N)
Volume, permanent pool, Vp.p,.i
102,884 fe
Area provided, permanent pool, AP,,,,,_,,
27,356 ft`
Average depth calculated
ft
Need 3 it min.
Average depth used in SAIDA, d., (Round to nearest 0.51t)
ft
Calculation option 2 used? (See Figure 10-2b)
Y (Y or N)
Area provided, permanent pool, AP—_P1
27,356 fe
Area, bottom of 10ft vegetated shelf, AboL�ndr
23,569 ftd
Area, sediment cleanout, top elevation (bottom of pond), Abopmd
6,053 le
"Depth" (distance b/w bottom of 1 Oft shelf and top of sediment)
6.50 It
Average depth calculated
4.55 it
OK
Average depth used in SAIDA, d. (Round to down to nearest 0.5ft)
4.5 ft
OK
Drawdown Calculations
Drawdown through orifice?
Y (Y or N)
Diameter of orifice (if circular)
3.00 in
Area of orifice (if -non -circular)
in'
Coefficient of discharge (CD)
0.60 (unitless)
Driving head (Ho)
0.50 ft
Drawdown through weir?
N (Y or N)
Weir type
(unitless)
Coefficient of discharge (C.)
(unitless)
Length of weir (L)
ft
Driving head (H)
ft
Pre -development 1-yr, 24-hr peak flow
8,01 fOisec
Post -development 1-yr, 24-hr peak flow
31.24 ft3lsec
Storage volume discharge rate (through discharge orifice or weir)
0.17 ft3lsec
Storage volume drawdown time
2.83 days
OK, draws down in 2-5 days.
Additional Information
Vegetated side slopes
Vegetated shelf slope
Vegetated shelf width
Length of flowpath to width ratio
Length to width ratio
Trash rack for overflow & orifice?
Freeboard provided
Vegetated filter provided?
Recorded drainage easement provided?
Capures all runoff at ultimate build -out?
Drain mechanism for maintenance or emergencies is:
3 :1
OK
10 :1
OK
10.0 It
OK
3 :1
OK
3.0 :1
OK
Y (Y or N)
OK
1.0 It
OK
Y (Y or N)
OK
Y (Y or N)
OK
Y (Y or N)
OK
pump
MAY 9 2015
BY
Form SW401-Wet Detention Basin-Rev.9-4/16/12 Parts I. & If. Design Summary, Page 2 of 2

Permit No.
(to be provided by DWQ)
III. REQUIRED ITEMS CHECKLIST
Please indicate the page or plan sheet numbers where the supporting documentation can be found. An incomplete submittal package will
result in a request for additional information. This will delay final review and approval of the project. Initial in the space provided to
indicate the following design requirements have been met. If the applicant has designated an agent, the agent may initial below. if a
requirement has not been met, attach justification.
Pagel Plan
lni, ti;ls
Sheet No.
C2,C4,DA1
1, Plans (1" - 50' or larger) of the entire site showing:
- Design at ultimate build -out,
- Off -site drainage (if applicable),
- Delineated drainage basins (include Rational C coefficient per basin),
- Basin dimensions,
Pretreatment system,
- High flow bypass system,
Maintenance access,
Proposed drainage easement and public right of way (ROW),
Overflow device, and
Boundaries of drainage easement.
(�
C4
2. Partial plan (1" = 30' or larger) and details for the wet detention basin showing:
- Outlet structure with trash rack or similar,
- Maintenance access,
Permanent pool dimensions,
Forebay and main pond with hardened emergency spillway,
Basin cross-section,
- Vegetation specification for planting shelf, and
- Filter strip.
C4
3. Section view of the wet detention basin (1" = 20' or larger) showing:
- Side slopes, 3:1 or lower,
- Pretreatment and treatment areas, and
r►��/
- Inlet and nutlet ctrurhires
C4
4. If the basin is used for sediment and erosion control during construction, clean out of the basin is specified
on the plans prior to use as a wet detention basin.
W
attached
5. A table of elevations, areas, incremental volumes & accumulated volumes for overall pond and for forebay,
�ro
M —
C4
verify volume provided.
6. A construction sequence that shows how the wet detention basin will be protected from sediment until the
entire drainage area is stabilized.
attached
7. The supporting calculations.
.AAII
attached
8. A copy of the signed and notarized operation and maintenance (0&M) agreement.
attached
9. A copy of the deed restrictions (if required).
10. A soils report that is based upon an actual field investigation, soil borings, and infiltration tests. County
soil maps are not an acceptable source of soils information.
IECLIVE
MAY 2 8 205
BY:-
Form SW401-Wet Detention Basin-Rev.9-4/18/12 Part III. Required Items Checklist, Page 1 of 1

TE 14025
State Stormwater Management Systems
Permit No. SW8 150522 MOD
Ross Technology Park
Stormwater Project No. SW8 150522 MOD
Brunswick County
Engineer's Certification
I, Phillip G. Tripp , as a duly registered Professional Engineer in the
State of North Carolina, having been authorized to observe (periodically/weeki! 4h
time) the construction of the project,
Ross Technology Park
(Project)
for 108 Grace, LLC (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 specifications:
Signature
Registration Number 17374
Date 6 - Zvi° E to
ECEIVE
MAY 2 5 201E
BY:
SEAL
- CIA CAr������
�a•��pF�sS14Ns w
SEAL
17374
'�i,G'R ±GOR` e�••

State Stormwater Management Systems
Permit No. SW8 150522 MOD
Certification Requirements: Page 2 of 2
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.
—6-5. The outlet structure elevations are per the approved plan.
_6. The outlet structure is located per the approved plans.
J'� 7. Trash rack is provided on the outlet/bypass structure.
�8- All slopes are grassed with permanent vegetation°
—g�_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 shell,
and a forebay.
15. The required system dimensions are provided, per the approved plans.
16. All components of the stormwater BMP are located in either recorded
common areas, or recorded easements.

High Density Commercial Subdivisions
Deed Restrictions & Protective Convenances
In accordance with Title 15 NCAC 2H.1000 and S.L. 2006-246, the Management Regulations, deed
restrictions and protective covenants are required for High Density Commercial Subdivisions where
lots will be subdivided and sold and runoff will be treated in an engineered stormwater control facility.
Deed restrictions and protective covenants are necessary to ensure that the development maintains a
built -upon area consistent with the design criteria used to size the stormwater control facility.
I, L. Allen Ross , acknowledge, affirm and agree by my signature below, that I
will cause the following deed restrictions and covenants to be recorded prior to the sale of any lot within
the project known as Ross Technolo-gy Park
The following covenants are intended to ensure ongoing compliance with State Stormwater
Management Permit Number SW8 150522 , as issued by the Division of Water Quality under
the Stormwater Management Regulations.
2. The State of North Carolina is made a beneficiary of these covenants to the extent necessary to
maintain compliance with the stormwater management permit.
3. These covenants are to run with the land and be binding on all persons and parties claiming
under them.
4. The covenants pertaining to stormwater may not be altered or rescinded without the express
written consent of the State of North Carolina, Division of Water Quality.
5. Alteration of the drainage as shown on the approved plan may not take place without the
concurrence of the Division of Water Quality.
6. The maximum built -upon area per lot, in square feet, is as listed below:
Lot # BUA Lot # BUA Lot # BUA
1 139,600 2R 1 131,600 5 0
This allotted amount includes any built -upon area constructed within the lot property boundaries,
and that portion of the right-of-way between the front lot line and the edge of the pavement. Built
upon area includes, but is not limited to, structures, asphalt, concrete, gravel, brick, stone, slate,
coquina and parking areas, but does not include raised, open wood decking, or the water
surface of swimming pools.
7. All runoff from the built -upon areas on the lot must drain into the permitted system. This may be
accomplished through a variety of means including roof drain gutters which drain to the street,
grading the lot to drain toward the street, or grading perimeter swales to collect the lot runoff
and directing them into a component of the stormwater collection system. Lots that will naturally
drain into the system are not required to provide these additional measures.
8. The owner of each lot, whose ownership is not retained by the permittee, is required to submit a
separate stormwater permit application to the Division of Water Oualitv and receive a permit
prior to construction.
9. The project and each lot will maintain a 30** foot wide vegetated buffer between all impervious
areas and surface waters. �.- ,_, .-...•
-..
• 6:
**50 foot for projects located in the 20 coastal counties. FEB 2 5 20 i '
o.
Form DRPC-1 Rev.2 05Nov2009 Page 1 of 2

High Density Commercial Subdivisions
Signature:__e_T Date:
1,`I 8 r'Q-PD al , a Notary Public in the
State of NC , County of MA-►c) �-ak oer ,
do hereby certify that L. Allen Ross personally appeared
before me this the day of 1=,�46&,x , 20 I(a , and acknowledge
the due execution of the foregoing instrument. Witness my hand and official seal,
SEAL
Signature 01 IU
I Teresa J. Bigford
My Commission expires Notary Public
New Hanover County, NC
Form DRPC-1 Rev.2 05Nov2009 Page 2 of 2

High Density Commercial Subdivisions
Deed Restrictions & Protective Convenances
In accordance with Title 15 NCAC 2H.1000 and S.L. 2006-246, the Management Regulations, deed
restrictions and protective covenants are required for High Density Commercial Subdivisions where
lots will be subdivided and sold and runoff will be treated in an engineered stormwater control facility.
Deed restrictions and protective covenants are necessary to ensure that the development maintains a
built -upon area consistent with the design criteria used to size the stormwater control facility.
1, L. Allen Ross , acknowledge, affirm and agree by my signature below, that I
will cause the following deed restrictions and covenants to be recorded prior to the sale of any lot within
the project known as Ross Technology Park
1. The following covenants are intended to ensure ongoing ccnipliance with State Stormwater
Management Permit Number , as issued by the Division of Water Quality
under the Stormwater Management Regulations.
2. The State of North Carolina is made a beneficiary of these covenants to the extent necessary to
maintain compliance with the stormwater management permit.
3. These covenants are to run with the land and be binding on all persons and parties claiming
under them.
4. The covenants pertaining to stormwater may not be altered or rescinded without the express
written consent of the State of North Carolina, Division of Water Quality.
5. Aiteration of the drainage as shown on the approved plan may not take place without the
concurrence of the Division of Water Quality.
6. The maximum built -upon area per lot, in square feet, is as listed below:
Lot # BUA Lot # BUA Lot # BUA
_ 1 139,60 2R 197,300 5 0
This allotted amount includes any built -upon area constructed within the lot property boundaries,
and that portion of the right-of-way between the front lot line and the edge of the pavement. Built
upon area includes, but is not limited to, structures, asphalt, concrete, gravel, brick, stone, slate,
coquina and parking areas, but does not include raised, open wood decking, or the water
surface of swimming pools.
7. All runoff from the built -upon areas on the lot must drain into the permitted system. This may be
accomplished through a variety of means including roof drain gutters which drain to the street,
grading the lot to drain toward the street, or grading perimeter swaies to collect the lot runoff
and directing them into a component of the stormwater collection system. Lots that will naturally
drain into the system are not required to provide these additional measures.
8. The owner of each lot, whose ownership is not retained by the permittee, is required to submit a
separate stormwater permit application to the Division of Water Quality and receive a permit
prior to construction.
9. The project and each lot will maintain a 30** foot wide vegetated buffer between all impervious
areas and surface waters.
**50 foot for projects located in the 20 coastal counties.
JUL 3 t 2a15
Form DRPC-1 Rev.2 05Nov2009 Page 1 of 2 BY:

Signature:
Hi-gh Density Commercial Subdivisions
Deed Restrictions & Protective Convenanc
c,-d , a Notary Public in the
State of NJQ4 l r?rdi'1L , County of-Trft'r ,
do hereby certify that L. Allen Ross personally appeared
before me this the day of 202j and acknowledge
the due execution of the foregoing instrument. 4tness my hand and official seal,
W"""r#j%v SEAL
Signature'a oore',
r r OTAR
My Commission expires
r -
-OusoG
Form DRPC-1 Rev.2 05Nov2009 Page 2 of 2