SW8961004_HISTORICAL FILE_19961114

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SW8 9 6 10 04
DOC TYPE
❑ CURRENT PERMIT
❑ APPROVED PLANS
HISTORICAL FILE
❑ COMPLIANCE EVALUATION INSPECTION
DOC DATE
j R 9 6 11 14
YYYYMMDD

State of North Carolina
Department of Environment,
Health and Natural Resources
Division of Water Quality
James B. Hunt, Jr., Governor
Jonathan B. Howes, Secretary
A. Preston Howard, Jr., P.E., Director
Mr. Andrew L. Ammons
Ammons-NorthChase Corporation
4510-A NorthChase Parkway NE
Wilmington, North Carolina 28405
Dear Mr. Ammons:
I F65WA
L IL
E)FEE HNR
November 14, 1996
Subject: Permit No SW8 961004
Technology Court
High Density Subdivision Stormwater Project
New Hanover County
The Wilmington Regional Office received the Stormwater Management Permit Application for Technology Court on October
7, 1996, with final information on October 28, 1996. Staff review of the plans and specifications has determined that the
project, as proposed, will comply with the Stormwater Regulations set forth in Title 15A NCAC 2H.1000. We are forwarding
Permit No. SW8 961004, dated November 14, 1996, for the construction of Technology Court.
This permit shall be effective from the date of issuance until November 14, 2006, 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 ajudicatory
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, P.O. Drawer 27447, Raleigh, NC 27611-7447. 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 Linda Lewis, or me at (910)
395-3900.
Sincerely,
en Eagleson.
Regional Water Quality Supervisor
KE/arl: S:\WQS\STORMWAT\PERMIT\961004.NOV
cc: John Klein, P.E.
Tony Roberts, New Hanover County Inspections
Beth Easley, New Hanover County Engineering
Linda Lewis
rWilmington Regional Office
Central Files —�
P.O. Box 29535, Raleigh, North Carolina 27626-0535 Telephone [phone] FAX [phone]
An Equal Opportunity Affirmative Action Employer

4
State Stornwater Management Systems
Permit Nn SWS 9610(M
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT, HEALTH AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
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
Ammons-NorthChase Corporation
Technology Court
New Hanover County
FOR THE
construction, operation and maintenance of two detention ponds in compliance with the provisions of 15A NCAC
2H A000 (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 November 14, 2006 and shall be subject to the
following specified conditions and limitations:
I. DESIGN STANDARDS
1. 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 on page
3 of this permit, the Project Data Sheet. The subdivision is permitted for 26 lots. The allowable built -
upon area per lot in square feet is as follows: Lots 42-45, 59-64, 67-69 (&18,000; 46, 58, 65-66
@36,000; 48-49, 51-53, 55-56, @15,500; and 50 & 54 @24,500.
3. Approved plans and specifications for this project are incorporated by reference and are enforceable parts
of the permit.
`A

State Stormwater Management Systems
Permit Nn SWR 961004
Project Name:
Permit Number:
Location:
Applicant:
Mailing Address:
DIVISION OF WATER QUALITY
PROJECT DATA SHEET
Technology Court
961004
New Hanover County
Mr. Andrew L. Ammons
Ammons-NorthChase Corporation
4510-A NorthChase Parkway NE
Wilmington, North Carolina 28405
Application Date: `October 7, 1996
Water Body Receiving Stormwater Runoff: Smith Creek
Classification of Water Body: "C Sw"
NORTH
Pond Depth:
Permanent Pool Elevation:
Total Impervious Surfaces Allowed:
Green Area entering Pond:
Required Surface Area:
Provided Surface Area:
Required Storage Volume:
Provided Storage Volume:
Temporary Storage Elevation:
Controlling Orifice:
3 feet
31 MSL
344,780 (lots 54-56, 63-69)
65, (a(e Ck 5
251,963 square feet 2
39,915 square feet 2
41,797 square feet 2
28,345 cubic feet 1
44,396 cubic feet 2
32 MSL 3
3.9" hole in 4" pipe 3
S.of
3.25 feet
31 MSL
235,960 (lots 42-46, 48-
3, 59-62) square feet
37,290 square feet
5,082 square feet
5,997 square feet
9,669 cubic feet
7,908 cubic feet
2 MSL
" pipe
3

State Stormwater Management Systems
P mit No. SWR 9610n4
4. No 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.
5. The permittee is responsible for verifying that the proposed built -upon area does not exceed the allowable
built -upon area. Once the lot transfer is complete, the built -upon area may not be revised without approval
from the permittee, and responsibility for meeting the built -upon area Omit is transferred to the individual
property owner.
6. The following items will require a modification to the permit:
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 of the project area.
f. Filling in, altering, or piping of any vegetative conveyance shown on the approved plan.
In addition, the Director may determine that other revisions to the project should require a modification
to the permit.
7. 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.
8. The 5 lots fronting Enterprise Drive, Lots 41, 47, 71, 57 and 70, must direct their runoff drainage away
from the approved detention ponds. The ponds are not designed to accept this runoff. The recorded
covenants provide Ammons-NorthChase with review authority of site plans. Ammons-NorthChase is
required to review the proposed storm drainage for these lots and verify that the drainage is not entering
the proposed pond system. '
II. SCIIEDULE OF COMPLIANCE
1. The permittee will comply with the following schedule for construction and maintenance of the
stormwater management system:
a. The stormwater management system shall be constructed in it's entirety, vegetated and operational
for it's intended use prior to the construction of any built -upon surface except roads.
b. During construction, erosion shall be kept to a minimum and any eroded areas of the system will
be repaired immediately.
2. The permittee grants permission to DEHNR Staff to enter the property for the purposes of inspecting the
project for compliance with the conditions of this permit.
13

State Stormwater Management Systems
Permit No. SW8 9610
3. The permittee shall at all times provide the operation and maintenance necessary to assure the permitted
stormwater system functions at optimum efficiency. The approved Operation and Maintenance Plan must
be followed in it's entirety and maintenance must occur at the scheduled intervals including, but not
limited to:
a. Semiannual scheduled inspections (every 6 months).
b. Sediment removal.
C. Mowing and revegetation of 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 outlet structure, orifice device and catch basins and piping.
g. Access to the outlet structure must be available at all times-
4. Records of maintenance activities must be kept and made available upon request to authorized personnel
of DWQ. The records will indicate the date, activity, name of person performing the work and what
actions were taken.
5. Prior to the sale of any lot, deed restrictions must be recorded which limit the built -upon area per lot to
the amount as shown on the Project Data Sheet, per Part I k2. The recorded statements must follow the
form:
a. "The maximum built -upon area per lot, in square feet, has been restricted as follows: Lots 42-45,
59-64, 67-69 018,000; 46, 58, 65-66 @36,000; 48-49, 51-53, 55-56, @15,500; 50 & 54
@24,500; inclusive of that portion of the right-of-way between the lot line and the edge of
pavement, structures, pavement, walkways of brick, stone, or slate, but not including open wood
decking. "
b. "The covenants pertaining to stormwater regulations may not be changed or deleted without
concurrence of the State."
C. "Alteration of the drainage as shown on the approved plan may not take place without the
concurrence of the State."
d. "Lots within CAMA's Area of Environmental Concern may be subject to a reduction in their
allowable built -upon area due to CAMA regulations."
e. "Roof drain gutters are required on all homes and must drain into the street."
OR f. "Two-thirds of the lot must be graded toward the street."
OR g. "Perimeter swales and ditches must pick up the runoff and direct it into the pond."
6. This permit shall become voidable unless the facilities are constructed in accordance with the conditions
of this permit, the approved plans and specifications, and other supporting data.
k

State Stomwater Management Systems
Permit Na SWR 961004
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.
8. A copy of the recorded deed restrictions must be submitted to the Division within 30 days of the date of
the recording. The recorded copy must be signed by the permittee, dated, stamped with the deed book
number and page, and bear the stamp of the Register of Deeds.
A copy of the approved plans and specifications shall be maintained on file by the Permittee for a
minimum of ten years from the date of the completion of construction.
M. GENERAL CONDITIONS
This permit is not transferable. In the event there is a desire for the facilities to change ownership, or
there is a name change of the Permittee, a formal permit request form must be submitted to the Division
of Water Quality accompanied by an application fee, documentation from the parties involved, and other
supporting materials as may be appropriate. The approval of this request will be considered on its merits
and may or may not be approved.
2. Failure to abide by the conditions and limitations contained in this permit may subject the Permittee to
enforcement action by the Division of Water Quality, in accordance with North Carolina General Statute
143-215.6(a) to 143-215.6(c).
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.
4. In the event that the facilities fail to perform satisfactorily, including the creation of nuisance conditions,
the Permittee shall take immediate corrective action, including those as may be required by this Division,
such as the construction of additional or replacement stormwater management systems.
5. The permit may be modified, revoked and reissued or terminated for cause. The filing of a request for
a permit modification, revocation and reissuance or termination does not stay any permit condition.
Permit issued this the 14th day of November, 1996.
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
— (27'n
A. Presto)/Howard, Jr., P.E., Director
Divisi of Water Quality
By Authority of the Environmental Management Commission
Permit Number SW8 961004

State Stormwater Management Systems
Permit No 4WS 9610(M
Technology Court
Stormwater Permit No. SW8 961004
New Hanover County
Engineer's Certification
1, , as a duly registered Professional Engineer in the State of
North Carolina, having been authorized to observe (periodically/weekly/full time) the construction of the project,
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.
Noted deviations from approved plans and specification:
Signature
Registration Number
Date
7

v A 6 E HIM Par, E
1488 0523 RECORDED
REBECCA P. TUCKERED 14 9 1 1 5 5 8
d RECISIER OF I)EF.OS
NEW HANOVER CO. NC
a
NORTH CAROLINA, MAR 1Z 1 51 PH '90
DECLARATION OF COVENANTS L rn m
NEW HANOVER COUNTY.
G.D•rn�e•
v "
W
r�C7C!
THIS DECLARATION, Made this day of March, 1990, b , _n
NORTHCHASE CORPORATION, A North Carolina corporation, hereinaft5r g ^'
called "Declarant":
W I T N E S S E T H:
WHEREAS, the Declarant is the owner of the real property described
in Article I of this Declaration and is desirous of subjecting said
Property to the protective covenants and restrictions hereinafter
set forth, each and all of which is and are for the benefit of such
property and for each owner thereof, and shall inure to the benefit
of and pass and run with said Property, and each and every lot or
parcel thereof, and shall apply to and bind the successor in interest
and any owner thereof;
67 �y NOW, THEREFORE, the Declarant hereby declares that Property
described in and referred to in Article I hereof is and shall be
held, transferred, sold, and conveyed subject to the protective
covenants and restrictions set forth below:
46
ARTICLE I
THE PROPERTY
The real property which is and shall be held, transferred, sold
and conveyed subject to the protective covenants and restrictions
set forth in the Articles of this Declaration is located in the County
of New Hanover, State of North Carolina, and is more particularly
described in Exhibit "A" attached hereto and incorporated herein
by reference.
D E C E I V E
ARTICLE II D
OCT 2 81996
DEFINITIONS .
PROJ # S9JiC Q 1(7(_I4
Unless the context otherwise specifies or requires, the terms �'—
defined in this Article II shall, for all purposes of this Declaration,
have the meanings specified:
A. Declarant shall mean Ammons Northchase Corporation, together
with its successors and assigns.
B. Owner shall mean any person, firm, partnership or corporation
legally owning a fee simple interest in any portion of the property,
including tenants, as defined herein.
b THIS DOCUMENT IS BEING RERECORDED TO INCLUDE EXHIBIT "A" WHICH
WAS INADVERTRETURNEDToEeLY OMITT
� 1

BOu► PAGE
1488 G524
C. Tenant shall mean a person, firm, partnership or corporation
legally possessing a leasehold interest in any portion of the property
or improvements thereon.
D. Property shall mean the real property described in Article
I hereof and each parcel or lot thereof.
E. Buildinq shall mean and include the main portion of a structure
built for permanent use on the property, together with all projections
and extensions thereof, including but not limited to garages, outside
platforms and docks, carports, canopies, shelters, storage areas
and porches.
F. Improvements shall mean and include, without limitation,
buildings, outbuildings, roads, driveways, parking areas, fences,
retaining walls, screening walls, signs, loading areas, stairs, decks,
hedges, windbreaks, plantings, planted trees and shrubs, poles and
all other structures or landscaping.
ARTICLE III
PURPOSES OF DECLARATION
The property described in Article I hereof is subjected to the
protective covenants and restrictions hereby declared to insure the
best use and the most appropriate development and improvements of
each parcel or lot hereof; to protect the owners of said parcels
or lots against such improper use of surrounding lots as will depreciate
the value of their property; to preserve, so far as practicable,
the natural beauty of the property, to guard against the erection
thereon of poorly designed or proportioned structures, and structures
built of improper or unsuitable materials; to obtain harmonious and
appealing appearance and function; to insure the highest and best
development of the property; to encourage and secure the erection
of buildings thereon, with appropriate location thereof on lots;
to prevent haphazard and inharmonious improvement of the property;
to secure and maintain proper setbacks from streets, and adequate
free spaces between structures, and in general to provide adequately
for a high type and quality of improvement in this property and thereby
to enhance the values of investments made by purchasers of the parcels
or lots therein; and specifically to provide a means for creating,
maintaining, controlling and preserving the property as a high quality
Business/Office/Industrial Park.
ARTICLE IV
ALTERATION OF LOT LINES
Lots may be combined and lot lines altered with approval from
Declarant, but no lots may be subdivided in order to create additional
lots. Notwithstanding the foregoing, the Declarant or its assigns
may combine lots, alter lot lines or create additional lots.

soup PAGE
1488 0525
ARTICLE V
Easements for installation and maintenance of utilities and
drainage facilities are reserved as shown on the recorded plat of
the Property and along all front, rear and side lines of each lot
or parcel in the Property not to exceed ten (10) feet. within these
easements, no improvement shall be permitted which may damage or
interfere with the installation and maintenance of utilities and
drainage facilities. The easement area of the Property and all
improvement in it shall be maintained continuously by Owner except
for those improvements for which a public authority or utility company
is responsible.
ARTICLE VI
ANNEXATION OF ADDITIONAL PROPERTY
The Property described in Article I hereof is a portion of a
larger area of land owned by the Declarant and Declarant may from
time to time cause separate and additional declarations and agreements
to be filed subjecting other portions of the larger area of land to
restrictions similar -to or different from those imposed upon the Property
subject to this Declaration. In addition, Declarant may cause additional
portions of such larger area of land to be subjected to the terms of
this Declaration in the manner specified hereinafter. Only the
Property described in Article I and such additional property as shall
be specifically subjected to this Declaration shall be subject to this
Declaration and neither anything contained in this declaration nor
in any recorded or unrecorded plat, map, picture, drawing, brochure
or other representation of a scheme of development, shall be construed
as subjecting, or requiring Declarant, to subject to this Declaration,
any property or land now or hereafter owned by it other than as herein
defined. The fact that terms or provisions set forth in separate or
additional declarations and agreements relating to the property or
lands other than the Property described in Article I may be similar
or identical, in whole or in part, to this Declaration shall not be
construed to mean that it was the intent or purpose therein to subject
any additional property of lands to this Declaration or any terms or
provisions thereof.
Declarant may, from time to time, in its absolute discretion,
annex additional lands to the Property described in Article I and
thereby subject the same to this Declaration, by execution and filing
for recordation with the Register of Deeds of New Hanover County,
North Carolina, an instrument expressly stating an intention so to
annex and describing such additional lands to be so annexed.
ARTICLE VII
DEVELOPMENT PLAN REVIEW
The following items shall be submitted to Declarant for review
and approval thereof shall be received from Declarant prior to any
construction or improvements to the Property:
3

BOUr SAGE
1488 C526
A. Land Plan for the Property, including the following:
(1) Location and orientatin of structure
(2) Circulation
(a) Traffic flow and parking
(b) Loading areas and service areas
(c) Service areas
(3) Landscape and planting plan
(4) Exterior mechanical equipment and storage
tank location
(5) Walkways and utility locations
B. Site Engineering Plan for the Property, including all
sedimentation and impoundment as required by local authorities.
C. Architectural Plans for the Property including the
following:
(1) Building Plans
(2) Elevations
(3) Specifications
(4) Signs
(5) Exterior Lighting _
(6) Dumpster location and screening
ARTICLE VIII
METHOD OF APPROVAL
Whenever required herein, approval shall be requested by Owner
by submitting the same in writing to Declarant at Ammons Northchase
Corporation, 2832 NorthChase Parkway West, Wilmington, North Carolina
28405, or at such other place as shall be from time to time designated
by Declarant. Approval shall not be considered granted unless
specifically given in writing by Declarant; however, Declarant shall
not unreasonably withhold or delay its approval of plans, specifications,
etc., and if the Declarant has not requested additional information
or notified the applicant of disapproval with reasons therefor within
twenty (20) days after the preliminary information requesting approval
of plans is submitted to it, then such plans shall be deemed approved,
and construction may commence.
Neither Declarant nor its successors or assigns, shall be liable
in damages to Owner by reason of mistakes in judgment, negligence,
or non-feasance arising out of or in connection with the approval
or disapproval or failure to approve any plans. Every person who
submits plans to Declarant agrees that by submission thereof, he
will not bring any action or suit against Declarant to recover any
such damages.

BOOr, PACE
1488 0527
Every owner or person who now or hereafter owns or acquires any
rights, title or estate in any portion of the property is and shall
be conclusively deemed to have consented and agreed to every covenant
and restriction contained herein whether or not reference to this
Declaration is contained in the instrument by which such owner or
person acquired an interest in said property.
ARTICLE IX
DEVELOPMENT STANDARDS
Declarant reserves the right to waive, alter or modify each
standard set out, provided waiver is to be in writing and recorded.
A. Use
Use of the Property and all improvements thereon shall be
the building, maintenance and operation of offices, small business
facilities and manufacturing facilities. No improvement on the Property
shall be used for shopping center and/or retail food sales without
the approval of Declarant. Only high quality and environmentally
controlled uses will be allowed, i.e., no noxious odors or fumes,
no release of wastewater other than domestic strength to the on -
site facilities and no use that creates excessive noise as determined
by Declarant. -
B. Building Materials
No metal wall may be used on the front or side exterior
elevations of any buildings, with the exception of temporary metal
wall sections will be permitted to allow for future expansions.
C. Outbuildings
Outbuildings, with the exception of construction facilities
during actual construction, must comply with all pertinent setback
requirements and must be constructed of compatible materials with
those utilized in the primary building construction on said lot.
D. Setbacks
All buildings shall be constructed to have a minimum set-
back of fifty (50) feet from any street right-of-way to the face
of the building. Notwithstanding the foregoing, lots of less than
two hundred fifty (250) feet in depth shall have a minimum setback
of thirty (30) feet unless specifically approved in writing by the
Declarant.
All buildings constructed to have a minimum setback of fifteen
(15) feet from any property line (other than a street right-of-way)
to the face of the building.
5

e00r. FArof
1 1488 0528
E. Percentage of Parcel Covered
In no event shall more than fifty (50) percent of the area
of any lot be covered by buildings.
F. Parking Areas, Loading Areas and Driveways
1. All parking areas and driveways shall be constructed
to have a minimum setback of ten (10) feet from any street right
of way.
2. All parking areas and driveways shall be constructed
to have a minimum setback of five (5) feet from any property line
other than a street right of way.
3. Loading areas shall not encroach into setback areas,
and shall be screened so as not to be visible from any street, and
to minimize the effect of their appearance from neighboring property.
4. Loading areas shall, if facing on a street or highway,
be a minimum of 100 feet back from the right-of-way line of that
street or highway and shall be screened so as not to be visible from
that street or highway and to minimize the effect of their appearance
from neighboring property.
G. Parking, Loading and Unloading
No damaged vehicles shall be parked or stored in open areas
of the Property. Delivery vehicles (trucks, trailers, and/or..vans)
shall not be allowed to remain in the parking area located in front
of any building for extended periods of time. No onstreet parking
shall be allowed by any firm or business.
H. Service Screening, Storage Areas
Garbage and refuse containers will be concealed and contained
within buildings, or shall be concealed by means of a screening wall
or material similar to and compatible with that of the building.
These elements shall be integral with the concept of the building
plan, be designed so as not to attract attention, and shall be located
in the most inconspicuous manner possible. Unless specifically approved
by Declarant, no materials, supplies or equipment shall be stored
on the property except inside a closed building. Exterior air-
conditioning units and rooftop mechanical units shall be screened
with approved materials. No outside storage or displays shall be
allowed on the Property unless specifically approved in writing by
Declarant.
j

soup. - ?AGE
1488 C529
I. Landscaping
All property shall be landscaped according to plans approved
by Declarant, within ninety (90) days following occupancy or completion
of the building whichever first occurs. All shrubs, trees, grass
and plantings of every kind shall be kept neatly trimmed, properly
cultivated and free of trash and other unsightly material. Appropriate
provisions shall be provided by Owner for watering and other maintenance
of the grounds including the rights -of -way on which their property
abuts. In the event Owner shall fail to comply with these requirements,
Declarant shall, after first giving Owner ten (10) days notice in
writing, have the right to carry out such work and/or maintenance
and the total cost of same, including attorney fees, may be charged
to the Owner and collected by proceedings at law, if necessary.
J. Lighting
All street and site lighting shall be approved by Declarant.
Owner will be obligated for monthly light and maintenance bills for
any street lights on its land or adjacent street right-of-way prior
to the time fo city annexation and the assumption of these charges
by the city.
K. Advertising
All signs for advertising or otherwise must comply with
zoning regulations and be approved by Declarant.
L. Antennas
No mast or tower for an antenna, whether transmitting,
receiving, or both, shall be placed on any site or building unless
specifically approved by Declarant. In no event shall an antenna
have a wooden mast or tower.
M. Power and Communication Lines
All secondary power- lines and communication lines on any
site shall be placed underground and no portion of any line shall be
situated so as to be in public view.
N. Mailboxes
No mailboxes shall be permitted on the Property.
O. Storage Tanks
No storage tanks, including but not limited to those used
for storage of water or propane gas, shall be permitted on the
Property.
7

.i
BOO. PAGE
1488 0530
P. Mineral Exploration
The property shall not be used in any manner to explore for
or to use any oil, or other hydrocarbons, minerals of any kind,
gravel, earth or any earth substance or other mineral of any kind.
Q. Hobbies
Hobbies or activities that tend to detract from the aesthetic
character of the property and improvements used in connection with
such hobbies or activities shall not be permitted in open areas
unless carried out or constructed as directed by Declarant. This
paragraph is intended to include, but not be limited to, such activities
as automotive repair, boat repair and sports equipment placed on the
Property.
R. Nuisances
No rubbish or debris of any kind shall be placed or permitted
to accumulate upon any portion of the property and no odors shall
be permitted to arise therefrom so as to render any portion of the
property unsanitary, unsightly, offensive, or detrimental to any
of the property or to the occupants thereof. Without limiting any
of the foregoing, no speakers, horns, whistles, bells or other sound
devices, except security devices used exclusively for security purposes
shall be located, used or placed on the property. Nothing contained
in this paragraph shall be construed to prohibit the maintenance
by Owner of regularly cleaned garbage and trash containers as approved
by Declarant. ,
No livestock and/or poultry shall be allowed either temporarily
or permanently on the property.
S. Maintenance
The owner of any tract in this district must at all times
keep the premises, buildings, improvements and appurtenances in a
safe, clean, presentable condition and comply in all respects with
all government, health and policy requirements; and any owner will
remove at his own expense any rubbish of any character whatsoever
which may accumulate on said property.
ARTICLE X
DESIGNATION OF COMMITTEE
The rights and duties granted Declarant herein may be assigned
and/or delegated at a later date to a Committee of Owners appointed
by the Declarant.
A

Boor. ?AGE
,j 1488 G53I
The committee appointed shall obtain the consent of a
majority of the Owners before taking action. Each separately owned
lot shall be entitled to one (1) vote, regardless of size, and larger
lots shall have one vote for each three (3) acres of lot size, but
in no event shall any lot owner have more than five (5) votes.
ARTICLE XI
RIGHT OF ENTRY
During reasonable hours, Declarant and any member of any future
Committee or any authorized representative of either of them shall
have the right to enter upon and inspect any building or other
improvement of the Property for the purpose of ascertaining whether
or not the provisions of these covenants and agreements have been or
are being complied with and such persons shall not be deemed guilty
of trespassing by reason of such entry.
ARTICLE XII
TERM
The covenants and restrictions contained herein are to run with
the land and shall be binding on Owner and all persons claiming -
under them for a period of thirty (30) years from the date of recording.
As stated herein, Declarant reserves the right to waive violations
of the requirements of Article IX hereof without the joinder of any
Owner.
Every owner or person who now or hereafter owns or acquires
any rights, title or estate in any portion of the Property is and
shall be conclusively deemed to have consented and agreed to every
covenant and restriction contained herein whether or not reference
to this Declaration is contained in the instrument by which such
owner or person acquired an interest in said Property.
ARTICLE XIII
BUYBACK PROVISION
If, after the expiration of two years from the date of execution
of a contract for the sale of any lot lying within such NorthChase
Park of Commerce, any purchasers shall not have begun in good faith
the construction of a permanent building upon such lot, Declarant,
its successors and assigns, retain the option to rescind such contract,
refund the purchase price without interest, and enter into possession
of such land and demand a Deed from owner free and clear of all
encumbrances except for easements and restrictions of record. Declarant,
its successors and assigns, may extend in writing the time at which
such construction may be begun.
E

800?
PAGE
1488 0533
NORTH CAROLINA,
NEW HANOVER COUNTY.
I, the u}ersigned Notary Public, hereby certify that
�.1�1• personally came before me this day and
as n�ed that sheisSecretary of Ammons Northchase
Corporation, a corporation, and that by authority duly given and as
the act of the corporation, the foregoing instrument was signed in
its name by its President, sealo with its corporate seal and
attested by herself as its Secretary.
Witness my hand and notarial seal this /.I:tz day of March,
1990.
My commission expires:
otary Publ c
STATE OF NORTH CAROLINA
New Hanover County
Th F9regoin Annet Certifi ate(s)o(
Notary (Notaries) Public is/are certified to be correct.
This the day of =y`. 19FD
Rebeca P, Tueker, Register of Deeds
By
Putt/Asaicrwt --
11

BUUK PACE
1491 1569
i
Exhibit "A"
Township of Cape Fear, County of New Hanover, State of
North Carolina:
(1) All that real property known as Section 1 of
NorthChase Park of Commerce recorded In Map Book 28,
at Pages 151 and 152 In the New Ilanover County Registry,
reference to which Is hereby made for a more particular
description.
(2) All that real property known as Section 1A of
NorthChase Park of Commerce as recorded In Map Book 31,
at Page 13 In the New Ilanover County Registry, reference
to which is hereby made for a more particular description.

SOUK PAGE
•
1491 1570
STATEMENT OF EXPLANATION OF RE-RECORDING
STATE OF NORTH CAROLINA
COUNTY OF NEW HANOVER
Pursuant to the provisions of North Carolina General Statutes
Section 47-36.1, the undersigned, being the attorney who drafted the �Tsinstrument being re -recorded, hereby re-records theDECLARATION OF COVENA
dated—�llac6 i �Qy2___F which was originally recorded in Book
14B3at Page 0523 in the Office of the Register of Deeds for New
Hanover County, North Carolina, in order to correct the following:
Thf a° "^r �" tielnitse- corded to include Exhibit "A" which was
_luadvertently omitted from the first recording, a clerical error.
This the �day of April
1990.
POISSON, BARNNILL 6 BRITT
By[
DRAFTS! N
This explanation statement together with th attached instrument duly
199recorded at o'clock _m this
1990, In the y of
Book and Page shown on the fir atapage +heeof.&
NEW HANOVER COUNTY REGISTER OF DEEDS
Rebecca P Tucker
BY: C
Deputy/ Register of Deeds

'BIIUR PAGE
�. BOUT• oAr,E
1 4 8 8 0523 RECORDED AND VERIFIED
REBECCA P. 14 9 I 1 5 5 8
A RECIS1En OF RF.F.OS
NEW IIANOVER CO. NC
a
NORTH CAROLINA. Hn IZ 151 PH'9n
'^mm�
NEW HANOVER COUNTY. DECLARATION OF COVENANTS L cr mn�
-_nor
GD "In e•
THIS DECLARATION, Made this
day of March, 1990 NORTHCHASE CORPORATION, A North Carolina corporation, he m called "Declarant": ereinafter
o
W I T N E S S E T Hs
WHEREAS, the Declarant is the owner of the real property described
in Article I of this Declaration and is desirous of subjecting said
Property to the protective covenants and restrictions hereinafter
set forth, each and all of which is and are for the benefit of such
property and for each owner thereof, and shall inure to the benefit
of and pass and run with said Property, and each and every lot or
parcel thereof, and shall apply to and bind the successor in interest
and any owner thereof;
ry NOW, THEREFORE, the Declarant hereby declares that Property
;/ described in and referred to in Article I hereof is and shall be
held, transferred, sold, and conveyed subject to the protective
covenants and restrictions set forth belows
46
ARTICLE I
THE PROPERTY
The real property which is and shall be held, transferred, sold
and conveyed subject to the protective covenants and restrictions
set forth in the Articles of this Declaration is located in the County
of New Hanover, State of North Carolina, and is more particularly
described in Exhibit "A" attached hereto and incorporated herein
by reference.
ARTICLE II
DEFINITIONS
Unless the context otherwise specifies or requires, the terms
defined in this Article II shall, for all purposes of this Declaration,
have the meanings specified:
A. Declarant shall mean Ammons Northchase Corporation, together
with its successors and assigns.
B. Owner shall mean any person, firm, partnership or corporation
legally owning a fee simple interest in any portion of the property,
including tenants, as defined herein.
> THIS DOCUMENT IS BEING RERECORDED TO INCLUDE EXHIBIT WHICH
WAS INADVERTEN LY OMITTi��
RETURNED T�0Uc �,(L'

OCT 28 �acF
KLEIN ENGINEERING ^*................ 322 South 4th Street
El AND ASSOCIATES -" Wil(910)76NC
900
October 25, 1996 yFiille No.: 96013
Ms. Linda Lewis JI%YLF:R
NC DEHNR E C E I V E D
Water Quality Section D
127 Cardinal Drive Extension OCT 2 81996 D
Wilmington, NC 28405-3845
Re: Technology Court Subdivision, NorthChase Park of Commerce PROJ #�W q&-X�l4-
Request for Additional Information, Stonnwater Project No.: SW8 961004
Dear Ms. Lewis:
As requested in letter dated October 22, 1996, please find enclosed three (3) sets of revised
Drawings and supporting data. Revisions include the following:
1. The O&M plan has been signed as well as inclusion of a section regarding mowing of 3ideslopes
and maximum vegetation height. Included are three (3) copies of the revised plan.
2. The 5 lots fronting Enterprise are no longer under available for recommended deed restrictions;
however, enclosed is a copy of the recorded Declaration of Covenants which by Article VI I gives
Ammons-NorthChase review authority of site plans prepared for all lots. We have notified the
applicant that should these lots fail to route drainage in another direction, a violation of their water
quality permit would occur. We have also added notation on the Drawings reflecting the need to
route drainage away from the project area.
3. Detail J has been clarified to be consistent with the outlet detail as per the design calculations.
4. Wetlands are onsite and have been noted as requested.
5. The orifice for the north pond has been reduced to 3.9 inches as requested.
Should there be any questions concerning the enclosed items or additional copies desired, please
contact our office. Under separate cover, we are submitting revised information to Ms. Beth Easley
for Erosion and Sedimentation Control consideration.
Sincerely,
KLEIN ENGINEERING AND ASSOCIATES
J HN K. KLEIN, PE
closures
cc: Mr. Andrew L. Ammons
0'e".

DETACH AND RETAIN THIS STATEMENT eD a
AMMONS NORTHCHASE CORP. IF NOT ODF..Cr`v� .. IS IN
V. FF..11-M NO F... r Desweo:
DELUXE -FORM WVC-3 V-2
DATE DE SC RI PTI ON AMOUNT
8-27-96
V.2
For stormwater permit --Technology Court
385.00

State of North Carolina
Department of Environment, Health, and Natural Resources
Wilmington Regional Office
James B. Hunt, Jr. DIVISION OF WATER QUALITY Jonathan B. Howes
Governor WATER QUALITY SECTION Secretary
October 22, 1996
Mr. John Klein, P.E.
Klein Engineering and Associates
322 South Fourth Street
Wilmington, North Carolina 28401
Subject: ADDITIONAL INFORMATION
Stormwater Project No. SW8 961004
Technology Court Subdivision-NorthChase
New Hanover County
Dear Mr. Klein:
The Wilmington Regional Office received a Stormwater Management Permit Application for
Technology Court Subdivision-NorthChase on October 7, 1996. A preliminary review of that information
has determined that the application is not complete. The following information is needed to continue the
stormwater review:
1. Please have the O & M plan signed by Mr. Ammons. The deed restriction statement was
signed, but the O & M was not. Please add a section to the O & M concerning mowing of
the side slopes, and that the height of the vegetation should not exceed 8".
2. The 5 lots which front on Enterprise Drive must have their runoff directed away from
Technology Court. Please provide some guarantee in the form of a recorded deed restriction
that those lots will be restricted as to the direction of the runoff.
3. Pond section detail J indicates a design surface elevation of 31.5 for the south pond, but the
south pond outlet detail shows this elevation as 32. Please clarify.
4. Delineate all wetlands on site, or note that none exist.
5. The orifice size for the north pond is a tad too large. The most it should be is 3.9".
127 Cardinal Drive Extension, Wilmington, N.C. 28405-3845 • Telephone [phone] • Fax [phone]
An Equal Opportunity Aninnative Action Employer

Mr. Klein
October 22, 1996
Stormwater Project No. SW8 961004
Please note that this request for additional information is in response to a preliminary review. The
requested information should be received by this Office prior to November 22, 1996, or the application
will be returned as incomplete. The return of a project will necessitate resubmittal of all required items,
including the application fee.
If you have any questions concerning this matter please feel free to call me at [phone].
Sincerely,
/�� GItiV✓"lam
Ms. Linda Lewis
Environmental Engineer
JBB/arl: S:\WQS\STORMWAT\ADDINFO\961004.00T
cc: Linda Lewis
Central Files
2

DETENTION POND ANALYSIS
PROJECT #: SW8 961004-N North Pond
FILE NAME: S:\WQS\POND\961004-N.WK1
REVIEWE arl
PROJECT NAME: Technology Subdivision-NorthChase DATE
Drainage Basin: Smith Creek
Class: C Sw
Site Area 596743 square feet
Drainage Area 596743 square feet
Area in Acres 13.6993343 acres
IMPERVIOUS AREA
Runoff Coefficient
Lots 318000 0.98
Concrete 0 0.95
Asphalt 26780 0.95
TOTAL 344780 Isquare feet
% IMPERVIOUS 57.78%
SURFACE AREA CALCULATION
SA/DA
Req. SA
Prov. SA
VOLUME CALCULATION
Pond Depth
6.689%
.:39914.7W square feet
41797 Isquare feet
Green 251963 square feet
Bottom 28 MSL
Perm. Pool 31 MSL
Design Pool 32 MSL
Design SA 46996 square feet
Req. Volume 28344.9292 cubic feet
Prov. Volume 44396.5 cubic feet
ORIFICE CALCULATION
22-Oct-96
Chlorides: N/a
3 TSS:
[From plan Contours]
[From plan Contours]
Rv= 0.5699927
Avg. Head = 0.4166667 ft
Flow 02, cfs 0.25692419 Area, in 11.90362 Dia 2, inches
Flow Q5, cfs 0.10276968 Area, in 4.761447 Dia 5, inches';
Engineer uses 4 Inches Area = 12.566371 in
Q, cfs = 0.2712289 Drawdown 18945194 da
COMMENTS
Surface Area and Volume are within Design Guidelines. Orifice is a tad too large.
.o]

DETENTION POND ANALYSIS
PROJECT #: SW8 961004-S South Pond
FILE NAME: S:\WQS\POND\961004-S.WK1
REVIEWE
PROJECT NAME: Technology Subdivision-NorthChase DATE:
Drainage Basin: Smith Creek
Class: C SW
Site Area 473250 square feet
Drainage Area 473250 square feet
Area in Acres 10.8643251 acres
IMPERVIOUS AREA
% IMPERVIOUS
Lots
Concrete
Asphalt
TOTAL
49.86%
SURFACE AREA CALCULATION
SA/DA
Req. SA
Prov. SA
VOLUME CALCULATION
arl
22-Oct-96
Chlorides: N/a
Runoff Coefficient
217500 0.98 Lrl5 42- 40,
0 0.95
18460 0.95
;235960 square feet
Pond Depth:
5.300%
25082.25 Isquare feet
25997 square feet
4. g -S 3 56-ia 2
42-45 59-614, e f V OW
4-�ois�GS-Colo, e 3Crtx>J
3.25 TSS: 90
4,8-4-R 5/-531 .55-5(0 e/55o0
Sob 5 4- E9 -Z, 9 o
24500 s I 43
/Z
¢StOO� Lj5�1�
[From plan Contours]
Green
237290
square feet
Bottom
21AS28
MSL
Perm. Pool
31
MSL
Design Pool
32
MSL
Design SA
29820
square feet [From plan Contours]
Req. Volume
19668.875
cubic feet Rv= 0.4987353
Prov. Volume _ 27908:5 cubic feet
ORIFICE CALCULATION
Avg. Head =
0.4375 ft
Flow Q2, cfs
0.16150752
Area, in 7.302508
Dia 2, inches
3.049236.
Flow Q5, cfs
0.06460301
Area, inZ 2.921003
Dia 5, inchesi
01.928506'
Engineer usesi
Inches Area =
7.0685835
in2
3
Q, cfs =
0.1563339 Drawdown
' 2.0661871
days
COMMENTS
Surface Area ,Volume and Orifice are within Design Guidelines.

DIVISION OF ENVIRONMENTAL MANAGEMENT
NORTH CAROLINA STORMWATER MANAGEMENT PERMIT APPLICATION
1. GENERAL INFORMATION
1. Project Name TEe KNb� Gt tY a .1eT
2. Location, directions to project (include County,
Address, State Road) Attach map. tJ.awG.rse VIA' r of
CeMN6Y2Ce ENTEW?RKE VM�E//
3. Owner's Name AHMONS IJtleZtl�tLKCCeR�. Phone (gio)'199-5'TZ3
4. Owner's Mailing Address 4510 - A I. 0eTM64AtE TA42KW NY RC-
Ci%owrot.S State KC Zip ZEA09-
5. Application date ne.rocl E2 1 ,19g10 Fee enclosed S 385
So-
6. Nearest Receiving Stream SM.Th Laetw Class.
7. Project description enMJ.AEeCkAL- SafSotv�s�or.(
11. PERMIT INFORMATION
1. Permit No.(To befilled in by oeu) 56o $ 9CD too 4-
2. Permit Type ✓ New Renewal Modification (existing Permit No.)
3. Project Type: _Low Densi rK
✓Detention Infiltration Other:_ Redevelop _General _Dir Cert
4.Other State/Federal Permits/Approvals Required (checkapptapriate blanks)
CAMA Major Sedimentation/Erosion Control .✓ 404 Permit
Ill. BUILT UPON AREA (Please see NCAC 711.1005 then. 1007farapplimble density limits)
Morph Soufh
Drairu@ee Drainage Breakdown of bmoervious Area
jzgl @mtn (Please indirote below the design impervious area)
Classification
Allowable Impervious Area
Total Project Area
Proposed Impervious Area
C--Sw C.-Sw
4.11 At 3.2L Ae
m-w Ac to.86 Ae.
7.42 Ac 5'. AZ Ac
% Impervious Area 51.870 49-el %
1V. STORMWATERTREATMENT (Descnbehim, the eunafjwin betreated)
lbe-i'ENTorI -' u.IOS
Buildings
Streets 1.0 4 Ac-
Parking/SW
LOT b6VEL0V"'LV4 't
Other _ 12.29 A e-
Totals

i ,:;(.f;a:,a i.•il,. ,.r,l is -<<I re7 .-.
.. ! .. :. _
17"j's., •,
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la, r. fp1s; ii{i!`: a •'t:. ('Cf'r:$I !.rr �::f
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f...it f'J :llf if•. ,. !1`1:01:. \ •I.l:ir; .Dili
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Jb�r4.r.r�3 �.`? xafSi P}r ° Y'.Y./Y_9/a-` hiF[,''e.F
gt{b 'l.i e'-.'d-r`Es:;.+3]�r� u� d'irllg i r3rii-.3 rc •+.�.-'9J a.
� �3�J S✓r�J/ 1.0i L_A I';T1?.Jiii�
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i
1

V. DEED RESTRICTIONS AND PROTECTIVE COVENANTS
Deed restrictions and protective covenants are required to be recorded for all low density projects and all
subdivisions prior to the sale of any lot. Please see Attachment A for the specific items that must be recorded forthe
type of project applied for.
By your signature below, you certify that the recorded deed restrictions and protective covenants for this project
shall include all the items required by the pern it, that the covenants will be binding on all parties and persons
claiming under them, that they will run with the land, that the covenant cannot be changed or deleted without
concurrence from the State, and that they will be recorded prior to the sale of any lot.
VI. OWNER'S CERTIFICATION
1, Aaottzm3 L. AtAtA pAl- certify that the information included on this permit
(Pleam print M type —me clearly)
application form is correct, that the project will be constructed in conformance with the approved plans, that
the deed restrictions will be recorded with all required permit conditions, and that to the best of my knowledge,
the proposed project complies with the requirements of 15A NCAC 2H.1000.
below nameo)person or firm to submit stormwater plans on my behalf.
Date
VII. AGENT AUTHORIZATION (Mu59'FFCOtfPLE7Er))
Person or firm name KL6t►4 &:m6t►.1EERw► ANC kSooAT6S
Mailing Address 372 Somata Aw `Srt2EET
City \,jtuHta6To/J State_b G, Zip 764ol Phone_(J%pJ I,$- o0
Please submit application, fee, plans and calculations to the appropriate Regional Office.
cc: Applicant(WiRO//Central Files

t!1
' l
,
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!,If 411 e. )ej!::f%;)J '.!1f! f,ir tr,r i7lo `h:?I .;f ftj.':I rry f-.r IPt. 'ij:i yf:f :7•I.: t[:. (` , t i ;l'
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f;11? 1!'r .;b-., :;. Ci, ,r(ru^fi,il 1:1 ((1L; :A! i;w tilsiturdr law tin,
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'.itilq'ti'. ouq A jf 0h, 1PT . 0. lem i.h17 sop f 'iif �N' j �' t " � r � f' .. i .f� 'f' l:f., � . 1'f , F! L,ly 14t: U( r."i H,f:j !:. .Cil :' rl"lr'f Cq !r :r'n �...
h. tih:C ill'! It:`, j{r.i', i'.i]I till.: tll bi.4P:,(' :.)I . :!: S,_. .:A M, VIH f';..j .,(..! J;; tf.4.;.'.: ,'(: !)'.f .. ,
;a d Oman }a' fir'' 1 rin wign iffvt yL sLmgQ fPAO 11-T `.um ?vq 1`. t:IMI& w {::mm" qyv 11V dai
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..Iy. .rt}r9:V'itb;7i.!C!:71.t ;itr Gilt r. c"fy'Ipitm qr p'Aots! X {C rir).4r;. !J •. '9: 7,; i
- (�.
I . W ID 11!.%.: M. MAX IM)1rlif.b.;&',. 51°E Dift.P''r. .r,

ATTO MLti-r „ A
PROJECT: Technology Court
LOCATION: NorthChase Park of Commerce, Enterprise Drive, New Hanover County
u UNILLM"YMMM;_u
In accordance with Title 15 NCAC 2H.1003(aX2), the following DEED RESTRICTIONS AND
PROTECTIVE COVENANTS shall be recorded in New Hanover County Registry prior to the
conveyance of any commercial lots. Said Deed Restrictions and Protective Covenants shall apply
to the following lots of the project area for Technology Court in New Hanover County, North
Carolina as shown on plans prepared by Klein Engineering and Associates.
"For each lot, no more than the following square footage designated for each Lot shall be
covered by impervious structures, including asphalt, gravel, concrete, brick, stone, slate, or
similar material, not including wood decking:
LOT
BUILT -UPON
NUMBER
AREA (SF)
41 thru 45 (inclusive)
18,000
46
36,000
48 and 49
15,500
50
24,500
51 thru 53 (inclusive)
15,500
54
24,500
55 and 56
15,500
58
36,000
59 thru 64 (inclusive)
18,000
6S and 66
36,000
67thru 69 (inclusive)
18,000
For purposes of calculating square footage, the word Lot shall also include that portion of any
driveway or like impervious area or structure servicing the Lot which may lie between the edge
of any street pavement and the front Lot line.
This Covenant shall be enforced by the State of North Carolina and may not be changed or
deleted without the consent of the State This covenant shall run with the land and shall be
binding on all parties and persons claiming under them."

Page Two
DEED RESTRICTIONS AND PROTECTIVE COVENANTS
Technology Court, NorthChase Park of Commerce
Andrew L. Ammons
Ammons NorthChase Corporation
4510-A NorthChase Parkway NE
Wilmington, NC 28405
Phone: [phone]
STATE OF NORTH CAROLINA
COUNTY OF NEW HANOVER
4 f � �ZEilo�✓r
(Signature)
9-9.9v
(Date)
I, -b. k4, L"s , a Notary Public of the State of North Carolina,
County of New anover, Hereby certify that Andrew L. Ammons personally appeared before me
this day and executed the above certification.
Witness my hand and notarial seal, this , day of September, 1996.
tary Public
My Commission expires
NOTARY '.
zi
PUBLIC ' 2
.���tiQV�R •COJ,,��
7•�Za- _-�oai

STIRNWATER
OCT 2 81996 D
PROJ # W �I[olCz>
TECHNOLOGY COURT
L GENERAL
The project area will contain improvements which will require perpetual maintenance and include
a storm water management system which relies on the treatment of surface runoff through the use
of a detention pond facility.
2. OPERATION OF DETENTION POND SYSTEM
The detention pond is intended to provide some measure of sediment and nutrient filtration within
the vegetation along the pond perimeter as well as promoting infiltration of runoff into the
subsurface groundwater.
The use of a pond allows a more intensive built -upon area to be developed and is a permitted
method for stormwater treatment in compliance with the State of North Carolina Administrative
code Section 15 NCAC 2H.1000, Stormwater Runoff Disposal.
3. MAINTENANCE RESPONSIBILITIES
Routine maintenance as detailed below is required for the detention pond. To provide for this, the
OWNER shall be responsible for all required maintenance. In lieu of performing the direct
maintenance, the OWNER may contract this service to an independent maintenance entity;
however, all responsibilities for enforcing these restrictive covenants shall reside with the OWNER.
4. DETENTION POND SYSTEM MAINTENANCE
As a minimum, the following maintenance procedures shall be followed:
(1) General: Side slopes shall be kept mowed and clear of debris. Vegetation shall be kept to a
maximum height of eight (8) inches and mowing shall be scheduled accordingly.
(2) Upon Completion of Construction:
(a) Any sediment deposited in detention pond shal I be removed to obtain design depth, slopes and
specifications.

Page Two
Operation and Maintenance Plan
Technology Court
(b) The wetted perimeter shall be planted with water resilient vegetation appropriate to soil and site
characteristics; the remaining pond slopes shall also be vegetated and planted with vegetation
appropriate to soil and site characteristics. All slopes shall be maintained to ensure growth of such
vegetations.
® All drainage features shall be inspected and cleaned of sand, silt or foreign materials. These
features include, but not limited to, the pond outlet structure trash screen, outlet orifice and site
drop inlet and catch basin grates.
(d) Any component which is determined to be not performing satisfactory in its intended usage shall
be repaired or replaced to original design specifications.
(3) After Each Runoff Producing Rain:
(a) Any sloughing, erosion or vegetative wash -out of the pond slopes shall be repaired immediately.
(b) All drainage features shall be inspected and cleaned of trash or foreign materials. These
features include the pond side slopes, pond outlet structure trash screen, outlet orifice and site drop
inlet and catch basin grates.
® Any component which is determined to be not performing satisfactory in its intended usage shall
be repaired or replaced to original design specifications.
(4) Semi -Annually:
(a) The detention pond shall be checked for siltation and filling. Should the bottom elevation
exceed the design bottom elevation, the pond shall be excavated six (6) inches below the design
elevation to allow solids accumulation due to siltation and filling.

Page Three
Operation and Maintenance Plan
Technology Court
Andrew L. Ammons
Ammons NorthChase Corporation
4510-A NorthChase Parkway NE
Wilmington, NC 28405
Phone: [phone]
STATE OF NORTH CAROLINA
COUNTY OF NEW HANOVER
Y � DA^'r
(Signature)
(Date)
1, Ehuly B. Mathews a Notary Public of the State of North Carolina,
County of New Hanover, Hereby certify that Andrew L. Ammons personally appeared before me
this day and executed the above certification.
Witness my hand and no seal, this25thday of October, 1996.
�- J
(No ry Public)
-:..My Commission expires 7-22-2001
.•��,,, \may .. MAT..
NOTi;RY �E
z'
PUBLIC '
ER _..

APPROVALSET
DESIGN NARRATIVE
OPERATION AND MAINTENANCE AGREEMENT
DEED RESTRICTIONS
AND
STORM DRAINAGE CALCULATIONS
TECHNOLOGY COURT SUBDIVISION
NORTHCHASE PARK OF COMMERCE
ADJACENT ENTERPRISE DRIVE
NEW HANOVER COUNTY, NORTH CAROLINA
PREPARED FOR
AMMONS-NORTHCHASE CORPORATION
4510-A NorthChase Parkway NE
Wilmington, NC 28405
[phone]
File Number. 96013
Date: September 1996
•r•L H CARO(j''•;
Prepared by
Klein Engineering and Associates
322 South 4th Street
Wilmington, North Carolina 28401
[phone]
WATER
(� E C E I V E
Iona{ OCT 0 71996 jl�lf
PROJ 8MAO I6O4-
8

m
i 1' l f, - .-? i ,.,
A,i .S••� o
.,k

DESIGN NARRATIVE
L GENERAL:
The project site is located behind the frontage lots along Enterprise Drive within the confines of the
NorthChase Development. The portion of the development west of NC Highway 132 (College
Road) is traditionally known as the Park of Commerce due to the commercial nature of the majority
of development. Sited outside the the jurisdiction of the City of Wilmington but within New
Hanover County zoning, the project has already and will continue to have several reviews at various
levels with respect to development. Total site acreage is 24.6 acres which includes two (2) tracts
to be used for placement of the stormwater detention facilities.
The site will be developed for commercial usage with deed restrictions placed on the maximum
built -upon areas for each lot. Roadways are to be conveyed to the NCDOT upon completion. Water
and Sewer shall be provided by New Hanover County Water and Sewer District. Stormwater shall
be conveyed to two (2) stormwater ponds located on existing tracts east of the lots.
The intent of this submittal is to provide design of the storm drainage for the site into the detention
facility required by both County and State requirements. Also indicated on the Drawings are the
locations of the water and sewer improvements to serve the project site.
2. EXISTING SITE:
Site topography in the area of construction is relatively flat with an overall slope of less than one
(1) percent. And existing system of ditches currently run along the northern and western property
lines which discharge into the Smith Creek watershed which is currently classified C-Sw. All
discharge appears to currently discharge into these ditches with ultimate discharge to the south. Due
to the existing ditch system, no offsite drainage is capable of entering the proposed collection
system.
3. PROPOSED IMPROVEMENTS:
Grading and drainage improvements include filling of non -essential ditches, grading and paving of
the roadway and installation of water and sewer facilities. Included are the installation of the
drainage collection systems and detention ponds. Due to site area constraints, the ponds have been
divided into two (2) areas with calculations for each provided.

Page Two
Design Narrative
Technology Court, NorthChase Park of Commerce
4. STORM DRAINAGE CALCULATIONS:
Because of the need to meet State requirements, the calculations deal with the following areas of
concern. These areas of concern include the following:
a. Design piping to convey a 10-year storm event
b. Storage of the first one (1) inch of runoff from all project areas
c. Discharge of first one (1) inch within two (2) to five (5) days
d. Design of overflow for designed to handle a 25-year storm event
Piping has been sized based on the Rational Method and inputting the design parameters and data
into Haestad Method's Stormcad design program. Pond storage was evaluated using the area
averaging method of the proposed pond designs. Evaluation of the pond storage -elevation
information determined the elevation required to handle the first inch or runoff.
State regulations require a forebay to be used at the pipe inlets to the pond. Weirs have been
provided within each forebay structure so that drainage does not enter the remaining pond area until
the water surface in the forebays are at or above the required design surface elevation. Weirs, or
openings above this level have been sized to handle the 25-year storm event. A similar weir has
then been placed at the outlet end of the ponds to handle significant storm exceedence levels.
Due to the potential for relatively short times of concentration, a Tc of five (5) minutes for all inlets
has been used. This storm provided the greatest demand on the drainage system while requiring
relatively little storage volume. Storms of this short intensity are not likely to generate sufficient
runoff volumes to fill the stormwater ponds. Adding to this is the travel time through the piping and
the ponds. For this reason, the pond outlets were sized using the runoff generated from a storm
event with a Tc of ten (10) minutes.
A detailed piping evaluation of the ten (10) year storm has been provided. In addition, evaluations
of the 10-minute storm for the outlets as well as the flow from the 25-year storm for the weirs has
been included.
5. EROSION CONTROL CONSIDERATIONS:
Land disturbance will be extensive with much of the existing vegetation and topography being
altered due to ditch filling and utility installations. The initial step of the work will be aimed at
clearing and vegetation removal for the roadway areas as well as filling of ditches not required for
the proposed construction.. Subsequent work will be aimed at construction of the detention ponds
and utility installations within the roadway and pond areas.

Page Thee
Design Narrative
Technology Court, NorthChase Park of Commerce
Refer to the Drawings for additional details and construction sequence proposed for the project site.
These details include but are not limited to the following:
a. use of temporary seeding should construction be halted for the specified time limit (see plan)
b. use of flared -end sections with rip -rap at the pipe ends
c. use of end -of -day piping protection during construction of storm drainage piping
d. use of silt fencing is indicated for the environmentally sensitive areas of the project area
e. use of construction entrances at each connection to existing developed areas
f. use of inlet protection at each inlet
g. use of the detention pond as a sediment trap until all areas have been adequately stabilized
6. MAINTENANCE CONSIDERATIONS:
During construction, the Contractor shall be required to inspect and repair as needed all erosion
control devices after any significant rain event. Any measure found not performing it's intended
function, shall be repaired immediately. Upon completion of construction and establishment of
permanent ground cover, the Home Owner's Association shall be responsible for maintenance on
the project site.
Refer to Appendix B for the Storm Water Management Operation and Maintenance Plan for
additional requirements during both initial construction and completion.

"Ler"k3luI • \ ►
10-YEAR STORM EVALUATION
AND
POND DESIGN

OT T
LOT S
1 1
1 1
1 1
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1
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10 0 100 200 300 400
RAINAGE BASIN
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11
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J- rc,\\ DRAINAGE 6ASIN
1d\ rh BaMARY n YPI
------------
LEGEND
r EXISTM ITEM
j PJG1-OF-MAY/PRCPERTY -W
yW I EDGE C1F PAVEMOVT
WATER LPIE N/ VALVE �—M—
st — —S--Q SWTi SE\'.ER N/ Mi —5.--tee
STOR CPAo1 �.Q.-
1-______ EASEMENT ___-___
— --E— — OJERlEAD ELECTRIC

f
KLEIN ENGINEERING AND ASSOCIATES
PROJECT: Technology Court
CLIENT: Ammons-NorthChase Corp.
LOCATION: New Hanover County, NC
SUBJECT: Stonnwater Calculations
PROJECT NO.: 96013
DATE: September 1996
PREPARED BY: JKK
GIVEN: Drainage Area: �N_orth Pond:
__ 13.70 AcresI
__
(South.P-ond:__
—-- _10.86 Acresl
Design Storm: 10-year,
5 minute duration
Rainfall Intensity =
7.23 inches/hour
Runoff Coefficients:
Postconstruction: Overall for Piping 0.70
Turf
0.20
SOLUTION:
Refer to attached calculations for piping design into ponds
1. Summary of Built -Upon Areas into each Pond:
A. Northern Pond:
B. Southern Pond:
Built -Upon:
Built -Upon:
Roads-
26780 SF
Roads-
18460 SF
Lots -
318000 SF
Lots -
217500 SF
Turf:
251963 SF
Turf:
237290 SF
Total
596743 SF
Total
473250 SF
Percent Built -Upon:
57.8 %
49.9 %
2. Storage Design:
Design to store the first 1-inch of runoff from project area
IA NORTHERN POND
_ - -
(.Impery,_ 1_00_ z_---
--344780_SF� x
1'/12" =
28732
(,,Turf-- _ x _ _ 0.20 _
_-251963 SF1 x
1712" =
4199
32931 CIF
B..SOUTHERN
Impery. 1.00__ -x- —
- -235960-SF x
V/12" =
19663
Turf _ _0,20 x
---237290 SF) x
1'/12" =
3955
23618 CIF
3. NORTHERN DETENTION POND DESIGN:
Based on state requirements for ponds without vegetative filter
and using the design impervious percent of 57.8 with a depth of 3.0
feet, the ratio of surface area (SF) to drainage area
(DA) is: 7.00
Therefore, required pond surface area (SA) is
7.00 x 13.70 / 100 = 0.96 Acres
41772 SF Use: 41797 SF
Pond Width at Design Surface: 140 LF
Pond Length at Design Surface: 301 LF
Design Surface Fillet Radius: 20 '
Technology Court DEM Stormwater Calculations

KLEIN ENGINEERING AND ASSOCIATES
AVE.
AREA AREA
ELEV. (SF) (SF)
28.00
_41797
44396
r32.00 46996;
33.00 49680
48338
CUMUL.
VOLUME VOLUME
(CF) (CF)
(Pond Design Bottom)
0 (Design Area)
44396
44396
48338
92734
51051 51051
34.00 52421 143785
Depth where storage requirement met: 31.74
Depth of Required Storage: 0.74 VF or
Elevation of Top of Riser. 32.00
Depth of Storage Provided: 1.00 VF or
4. Restrictive Orifice Design:
Design orifice for discharge allowed using the following equation
Q= C x A x (2gh)^0.5 where:
Q= CFS
C = orifice coefficient
A = orifice diameter (SF)
g = 32.2 ft/sec2
h = pressure head (ft)
Rearranging the above equation to solve
for hole diameter
A = Q / C x (2gh)^0.5
For our type of discharge, C =
0.60
Pond Outlet Invert =
31.00
Max. Reqd Storage Level =
31.74
Ave Reqd Storage Level =
31.37
Trial Orifice Diameter =
4.00 inches
Orifice centerline =
31.17
Ave. Pressure Head (h) =
0.20
8.9 Inches
12.0 Inches
Allowable discharge rate:
Design discharge so that ponds drain between two (2) day and five (5) days.
Pond Volume:
32931 CF
Time to drain:
2 days
or
172800 sec
Therefore, release rate =
32931 CFS /
172800 sec
or
0.191 CFS
A =
0.0876 SF
4.01 inches
Pond Volume:
32931 CF
Time to drain:
5 days
or
432000 sec
Therefore, release rate =
32931 CFS /
432000 sec
or
0.076 CFS
A =
0.0350 SF
2.53 inches
5. Overflow Weir Design for Forebay and Main Pond Outlet
See attached calculations for anticipated 25-year storm flow. Design weir to
convey entire flow. Set weir invert above storage level.
weir equation: Q = C x HA3/2 x (L - 0.2H) where:
Technology Court DEM Stormwater Calculations

KLEIN ENGINEERING AND ASSOCIATES
Q =CFS
C = weir coefficient = 3.33
L = weir length (FT) = 2 x H (min)
H = head (FT)
rearranging and solving for weir length yields the following:
L=(Q/CxHA312)+0.2H
Design weir capacity = 58.4 CFS
Design weir depth = 12
Therefore, required weir length =
6. Summary:
Required Volume =
Pond Outlet Invert =
Required Storage Elev. _
Design Storage Elevation =
Pond Invert =
Outlet Orifice Diameter =
Ave Discharge Rate =
Anticipated drawdown time =
1 FT
17.74 FT use: 20 FT
32931 CF
31.00
31.74 Depth =
32.00 Depth =
28.00
4.00 '
0.190 CFS
48.2 Hours =
7. SOUTHERN DETENTION POND DESIGN:
Based on state requirements for ponds without vegetative filter
and using the design impervious percent of 49.9 with a depth of
feet, the ratio of surface area (SF) to drainage area
(DA) is: 5.30
Therefore, required pond surface area (SA) is
0.74 VF
1.00 VF
2.0 Days
5.30 x
10.86
/ 100 = 0.58 Acres
= 25082 SF Use:
Pond Width at Design Surface:
140 LF
Pond Length at Design Surface:
188 LF
Design Surface Fillet Radius:
20 '
AVE.
CUMUL.
AREA AREA
VOLUME
VOLUME
ELEV. (SF) (SF)
(CF)
(CF)
27.75
(Pond Design Bottom)
3100­ 25.9.77,j
0 (Design Area)
27898
27898
32.00_ _29820J
27898
_
30823
30823
33.00 31826
58721
32858
32858
34.00 33889
91579
Depth where storage requirement met: 31.85
Depth of Required Storage: 0.85 VF or
Elevation of Top of Riser. 32.00
Depth of Storage Provided: 1.00 VF or
3.25
25977 SF
10.2 Inches
12.0 Inches
Technology Court DEM Stormwater Calculations

KLEIN ENGINEERING AND ASSOCIATES
8. Restrictive Orifice Design:
Design orifice for discharge allowed using the following equation
Q= C x A x (2gh)A0.5 where:
Q= CFS
C = orifice coefficient
A = orifice diameter (SF)
g = 32.2 ft/sec2
h = pressure head (ft)
Rearranging the above equation to solve
for hole diameter
A = Q / C x (2gh)A0.5
For our type of discharge, C =
0.60
Pond Outlet Invert =
31.00
Max. Reqd Storage Level =
31.85
Ave Reqd Storage Level =
31.42
Trial Orifice Diameter =
3.00 inches
Orifice centerline =
31.13
Ave. Pressure Head (h) =
0.30
Allowable discharge rate:
Design discharge so that ponds drain between two (2) day and five (5) days.
Pond Volume: 23618 CF
Time to drain: 2 days
or 172800 sec
Therefore, release rate =
23618 CFS / 172800 sec
or 0.137 CFS
A = 0.0520 SF
3.09 inches
Pond Volume:
23618 CIF
Time to drain:
5 days
or
432000 sec
Therefore, release rate =
23618 CFS /
432000 sec
or
0.055 CFS
A =
0.0208 SF
1.95 inches
9. Overflow Weir Design for Forebay and Main Pond Outlet
See attached calculations for anticipated 25-year storm flow. Design weir to
convey entire flow. Set weir invert above storage level.
weir equation: Q = C x HA3/2 x (L - 0.2H) where:
Q = CFS
C = weir coefficient = 3.33
L = weir lenfth (FT) = 2 x H (min)
H = head (FT)
rearranging and solving for weir length yields the following:
L=(Q/CxHA3/2)+0.2H
Design weir capacity = 42.2 CFS
Design weir depth = 12 " = 1 FT
Therefore, required weir length =
12.87 FT use: 20 FT
10. Summary:
Required Volume =
23618 CIF
Pond Outlet Invert =
31.00
Required Storage Elev. =
31.85 Depth = 0.85 VF
Design Storage Elevation =
32.00 Depth = 1.00 VF
Pond Invert =
27.75
Outlet Orifice Diameter =
3.00 "
Technology Court DEM Stormwater Calculations

KLEIN ENGINEERING AND ASSOCIATES
Ave Discharge Rate = 0.129 CFS
Anticipated drawdown time = 50.8 Hours = 2.1 Days
Technology Court DEM Stormwater Calculations

North Pond Outlet Design
Worksheet for Pressure Pipe
Project Description
Project File untitled
Worksheet Technology Court - North Pond Outlet
Flow Element Pressure Pipe
Method Hazen -Williams Formula
Solve For Pipe Diameter
Input Data
Pressure at 1
4.00 feet H2O
Pressure at 2
6.00 feet H2O
Elevation at 1
28.00 ft
Elevation at 2
24.50 it
Length
60 ft
C Coefficient
120.0
Discharge
42.0 cis
Results
Diameter
24
in
Headloss
1.50
ft
Energy Grade at 1
38.63
ft
Energy Grade at 2
37.13
ft
Hydraulic Grade at 1
32.00
ft
Hydraulic Grade at 2
30.50
ft
Flow Area
3.04
ft'
Wetted Perimeter
6.18
ft
Velocity
13.80
ft/s
Velocity Head
2.96
ft
Friction Slope
0.025002 ft/ft
Oct 1, 1996 None FlowMaster v4.1c
23:5829 Haesfad Methods, Inc. 37 Brookside Road Waterbury, CT 08708 (203) 755-1e8e Page 1 of 1

Cross Section
Cross Section for Pressure Pipe
Project Description
Project File
untitled
Worksheet
Technology Court - North Pond Outlet
Flow Element
Pressure Pipe
Method
Hazen -Williams Formula
Solve For
Pipe Diameter
Section Data
Pressure at 1
4.00 feet H2O
Pressure at 2
6.00 feet H2O
Elevation at 1
28.00 ft
Elevation at 2
24.50 ft
Length
60 ft
C Coefficient
120.0
Diameter
24 in
Discharge
42.0 ds
4.00 feet H2O
28.00 ft
60 ft
Cia 24 in
6.00 feet H2O
24.50 ft
1�
V
H 1
NTS
Oct 2, 1996 None
00:01:02 Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 06708 [phone]
FlovMlaster v4.1c
Page 1 of 1

Cross Section
Cross Section for Pressure Pipe
Project Description
Project File
d:lprojfile\96files\96013--2tpondout.fm2
Worksheet
Technology Court - North Pond Outlet
Flow Element
Pressure Pipe
Method
Hazen -Williams Formula
Solve For
Pipe Diameter
Section Data
Pressure at 1
4.25 feet H2O
Pressure at 2
6.00 feet H2O
Elevation at 1
27.75 ft
Elevation at 2
24.50 ft
Length
60 ft
C Coefficient
120.0
Diameter
21 in
Discharge
30.5 cfs
4.25 feet H2O
27.75 ft
60 ft
Die 21 in
6.00 feet H2O
24.50 ft
1
V
H 1
NTS
Oct 2, 1996 None
00:09:02 Haestad Methods, Inc. 37 BrookWa Road Waterbury, CT 0670a (203) 755-1e66
FlowMaster v4.1c
Page i of 1

South Pond Outlet Design
Worksheet for Pressure Pipe
Project Description
Project File
d:tprojfilel96files196013--21pondout.fm2
Worksheet
Technology Court - North Pond Outlet
Flow Element
Pressure Pipe
Method
Hazen -Williams Formula
Solve For
Pipe Diameter
Input Data
Pressure at 1
4.25 feet H2O
Pressure at 2
6.00 feet H2O
Elevation at 1
27.75 It
Elevation at 2
24.50 ft
Length
60 ft
C Coefficient
120.0
Discharge
30.5 cis
Results
Diameter
21
in
Headloss
1.50
ft
Energy Grade at 1
34.96
ft
Energy Grade at 2
33.46
ft
Hydraulic Grade at 1
32.00
ft
Hydraulic Grade at 2
30.50
ft
Flow Area
2.39
ft'
Wetted Perimeter
5.48
ft
Velocity
12.78
ft/s
Velocity Head
2.54
ft
Friction Slope
0.025002 ft/ft
Oct 2, 1996 None Flow ster v4.1c
0o:oa:49 Haectad Methods, Inc. 37 erookside Road Waterbury, CT 06708 [phone] Page 1 of 1

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Project Title: Business Court, NorthChase Project Engineer: Klein Engineering and Associates
d:L..N96fil"W6013 - business courtlpipingnl.atm Klein Engineering and Assoc StormCAD v1.0
09/30/66 03:52:15 PM Haestad Methods, Inc. 37 Brookside Road Waterbury, C7 06708 1203)1755-1666 Page 1 of 1

STORM DRAINAGE CALCULATIONS
Node
Inlet
Area
(acres)
I Inlet
C
Inlet
intensity
(InBv)
Inlet
Discharge
(c1s)
Rim
Elevation
(ft)
Sump
Elevation
(ft)
Downstream
Node
Pipe
Downstream
Sump
Elevation
(ft)
Length
(ft)
Discharge
(c1s)
Section
Sae
Constructed
Slope
(%)
1-10
0.88
0.70
7.23
4.49
34.73
31.50
1.1
P-7
30.75
16
4.49
18 inch
4.17
1-9
1.14
0.70
7.23
5.82
34.38
31.35
1-8
P-6
31.15
18
5.82
18 inch
1.11
1-8
1.19
0.70
7.23
8.07
34.38
31.15
1-7
P-5
30.95
194
11.89
24 inch
0.10
1-7
1.08
0.70
7.23
5.51
35.60
30.95
1-1
P4
30.75
164
17.40
30 inch
0.12
1-11
1.68
0.70
7.23
8.57
34.73
31.89
1-2
P-9
31.50
18
8.57
18 inch
2.17
1-2
1.53
0.70
723
7.82
34.73
31.50
1-1
P-8
30.75
266
16.39
24 inch
028
W
1.10
0.70
7.23
5.61
34.73
30.75
J-2
P-3
30.46
44
43.89
36 Inch
0.68
J-2
1.56
0.70
7.23
7.96
36.00
30.45
J-1
P-2
29.15
212
51.85
36 inch
0.61
J-1
WA
N/A
WA
WA
36.00
29.15
Outlet
P-1
28.50
106
51.85
36 inch
0.61
Project Title: Business Court, NorthChase Project Engineer: Klein Engineering and Associatee
d:L..18681es\96013 - business cournpipingn 1.9tm Klein Engineering and Aaaoc StormCAD v1.0
Gg/30/88 03:3529 PM Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 06708 [phone] Page 1 o/ 1

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Project Title: Business Court, NOdhCihass Project Engineer: Klein Engineering and Associates
dA...\96files196013 - business courtOpingnl.stm Klein Engineering and Assoc StorrnCAD v1.0
09/30186 04:08:14 PM Hassled Methods, Inc. 37 Brookside Road Waterbury, CT 08708 [phone] Page 1 of 1

DOT Report
Pipe
-Node-
Upstream
Dovoistream
Inlet
Area
(acres)
Net
CA
(aces)
Total
CA
(acres)
-Ground-
Upstream
Downstream
(ft)
-HGL-
Upstream
Downstream
(ft)
-Slope-
Energy
Constructed
(%)
Section-
Discharge
Capacity
(cfs)
-Section-
Shape
Size
Length
(ft)
Average
Velocity
(1Us)
Description
P-7
1-10
0.88
0.62
0.62
34.73
32.94
0.18
4.49
Circular
18
2.56
1.1
34.73
32.91
4.17
21.44
18 inch
P-6
1-9
1.14
0.80
0.80
34.38
33.78
0.31
5.82
Circular
18
3.29
IA
34.38
33.72
1.11
11.07
18 inch
P-5
1.8
1.19
0.83
1.63
34.38
33.72
0.28
11.89
Circular
194
3.78
t-7
35.60
33.19
0.10
7.26
24 inch
P-4
1-7
1.08
0.78
2.39
35.60
33.19
0.16
17.40
Circular
164
3.81
1-1
34.73
32.91
0.12
14.32
30 Inch
P-9
1-11
1.68
1.18
1.18
34.73
34.42
0.87
8.67
Circular
18
4.85
1-2
34.73
34.31
2.17
16.46
18 inch
P-8
1-2
1.53
1.07
225
34.73
34.31
0.53
16.39
Circular
266
5.22
1-1
34.73
32.91
0.28
12.01
24 inch
P-3
1-1
1.10
0.77
6.02
34.73
32.91
0.54
43.89
Circular
44
7.60
J-2
36.00
32.69
0.68
55.07
36 Itch
P-2
J-2
1.56
1.09
7.11
36.00
32.89
0.61
51.85
Circular
212
8.42
J-1
36.00
31.59
0.61
52.23
36 inch
P-1
J-1
NIA
NIA
7.11
36.00
31.59
0.60
61.85
Circular
106
8.32
Outlet
35.00
31.00
0.61
52.23
36 inch
Project Title: Business Court, NorthChese Project Engineer: gein Engineering and Associates
d:\..t9681est06013- busineas courtWpingnt.obn Klein Engineering and Asaoc StonnCAD v1.0
09/30/96 04:17:18 PM Hassled Methods, Inc. 37 Brookside Road Waterbury, CT 06708 [phone] Page 1 of 1

Pipe Report
Pipe
Upstream
Node
Downstream
Node
Inlet
Area
(acres)
Inlet
C
Inlet
CA
(acres)
Total
CA
(acres)
System
Intensity
(irft)
Discharge
(cfs)
Length
(fl)
Constructed
Slope
(%)
Section
Size
Roughness
Capacity
(cfs)
P-7
1-10
1-1
0.88
0.70
0.62
0.62
723
4.49
18
4.17
18 inch
0.013
21.44
P-6
1-9
1-8
1.14
0.70
0.80
0.80
7.23
5.82
18
1.11
18 inch
0.013
11.07
P-5
1-8
1-7
1.19
0.70
0.83
1.63
723
11.89
194
0.10
24 inch
0.013
7.26
P4
1-7
1-1
1.08
0.70
0.76
2.39
7.23
17.40
164
0.12
30 Inch
0.013
14.32
P-9
1-11
1-2
1.68
0.70
1.18
1.18
7.23
8.57
18
2A7
18 inch
0.013
15.46
P-8
1-2
1-1
1.53
0.70
1.07
2.25
723
16.39
266
0.28
24 inch
0.013
12.01
P-3
1-1
J-2
1.10
0.70
0.77
6.02
7.23
43.89
44
0.68
36 Inch
0.013
55.07
P-2
J-2
J-1
1.56
0.70
1.09
7.11
723
51.65
212
0.61
36 Inch
0.013
5223
P-1
J-1
Outlet
N/A
WA
N/A
7.11
7.23
51.85
105
0.61
38 inch
0.013
5223
Project Title: Business Court, NorthChese Project Engineer: Klein J ngi Engineering end CAO vies
196 d:1... fi1es196013 - business courapipingnl.strn Klein Engineering and Assoc StormCAD 1.0
O9/90198 03:37:10 PM Haested Methods, Inc. 37 Brookside Road Waterbury, CT 06708 [phone] Page 1 of 1

Node Report
Node
Inlet
Area
(acres)
Inlet
C
Inlet
CA
(acres)
Extemal
CA
(acres)
Total
CA
(acres)
Inlet
TC
(min)
Erdemal
TC
(min)
Upstream
Flow
Time
(min)
System
Flow
Time
(min)
System
Intensity
(irvhr)
Total
Watershed
(CIA)
(cis)
Additional
Flow
(cis)
Carryover
(CIS)
Known
Flow
(cis)
1-10
0.88
0.70
0.62
0.00
0.62
5.00
0.00
0.00
5.00
7.23
4.49
0.00
0.00
0.00
1.9
1.14
0.70
0.80
0.00
0.80
5.00
0.00
0.00
5.00
7.23
5.82
0.00
0.00
0.00
1-8
1.19
0.70
0.83
0.00
1.63
0.00
0.00
5.09
5.09
723
11.89
0.00
0.00
0.00
1-7
1.08
0.70
0.76
0.00
2.39
5.00
0.00
5.95
5.95
7.23
17.40
0.00
0.00
0.00
1-11
1.68
0.70
1.18
0.00
1.18
5.00
0.00
0.00
5.00
723
8.57
0.00
0.00
0.00
1-2
1.53
0.70
1.07
0.00
225
5.00
0.00
5.06
5.06
723
16.39
0.00
0.00
0.00
1-1
1.10
0.70
0.77
0.00
6.02
5.00
0.00
6.66
6.66
7.23
43.89
0.00
0.00
0.00
J-2
1.56
0.70
1.09
0.00
7.11
5.00
0.00
6.78
6.76
723
51.85
0.00
0.00
0.00
J-1
WA
WA
WA
WA
7.11
WA
0.00
7.18
7.18
7.23
51.85
NIA
WA
WA
Outlet
NIA
WA
NIA
WA
7.11
NIA
0.00
7.39
7.39
723
51.85
WA
NIA
WA
Project Title: Business Court, NorthChase Project Engineer: Klein Engineering and Associates
dA..IB6filest86013 - business courrlpipingnl.atm Klein Engineering and Assoc StormCAD v1.0
09/3O/96 03:37:01 PM Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 06708 [phone] Page 1 of 1

Combined Pipe/Node Report
Pipe
Upstream
Node
Downstream
Node
Length
(R)
Inlet
Area
(acres)
Inlet
C
Inlet
CA
(acres)
Total
CA
(eves)
Inlet
Discharge
(cfs)
6ection
Size
Capacity
(cfs)
Average
Velocity
MIS)
Upstream
Invert
Elevation
(it)
Downstream
Invert
Elevation
(it)
P-7
1-10
1-1
18
0.88
0.70
0.62
0.62
4.49
18 irM
21.44
2.56
31.50
30.75
P-6
1.9
1-8
18
1.14
0.70
0.80
0.80
6.82
18 inch
11.07
3.29
31.35
31.15
P-5
1-8
1-7
194
1.19
0.70
0.83
1.63
6.07
24 inch
7.26
3.78
31.15
30.95
P-4
1-7
1-1
164
1.08
0.70
0.76
2.30
5.51
30 inch
14.32
3.81
30.95
30.75
P-9
1.11
1-2
18
1.68
0.70
1.18
1.18
8.57
18 inch
15.46
4.85
31.89
31.50
P-8
1.2
1-1
268
1.53
0.70
1.07
2.2
7.82
24 inch
12.01
5.22
31.60
30.75
P3
1-1
J-2
44
1.10
0.70
0.77
6.02
5.61
36 inch
55.07
7.60
30.75
30.45
P-2
J-2
J-1
212
1.56
0.70
1.09
7.11
7.96
36 mch
52.23
8.42
30.45
29.15
P-1
J-1
Outlet
106
NIA
WA
N/A
7.11
WA
36 inch
52.23
8.32
29.15
28.50
Project Tittle: Business Court, NorthChase Project Engineer. Klein Engineering and Associates
d:1..%9661ea196013 - business courfWpingnl.atm Klein Engineering and Assoc StormCAD v1.0
0930/96 03:36:41 PM Haestad Methode, Inc. 37 Brookside Road Waterbury, CT 06708 [phone] Page 1 of 1

Piping Table
Downstream
Node
Upstream
Node
Pipe
Length
(ft)
Discharge
(Cfs)
Constructed
Slope
(%)
Average
Velocity
(ft)
Downstream
Invert
Elevation
(ft)
Downstream
HGL
(ft)
Downstream
Cover
(ft)
Upstream
Invert
Elevation
(ft)
Upstream
HGL
(ft)
1-1
1-10
P-7
18
4.49
4.17
2.56
30.75
32.91
2.48
31.50
32.94
1-8
1-9
P-6
18
5.82
1.11
329
31.15
33.72
1.73
31.35
33.78
1-7
1-8
P-5
194
11.89
0.10
3.78
30.85
33.19
2.65
31.15
33.72
1-1
1-7
P-4
164
17.40
0.12
3.61
30.75
32.91
1.48
30.95
33.19
1.2
1-1 t
P-9
18
8.57
2.17
4.85
31.50
34.31
1.73
31.89
34.42
1-1
1-2
P-8
266
16.39
0.28
5.22
30.75
32.91
1.98
31.50
34.31
J-2
1-1
P-3
44
43.89
0.68
7.e0
30.45
32.69
2.55
30.75
32.91
J-1
J-2
P-2
212
51.85
0.61
8.42
29.15
31.59
3.85
30.45
32.89
Outlet
J-1
P-1
108
61.85
0.61
8.32
28.50
31.00
3.50
29.15
31.59
Project TiBe: Business Court, NorthChace Project Engineer. Klein Engineering and Associates
d:L..19681es196013 - businees courfWpingnl.etm Klan Engineering and Assoc StormCAD v1.0
09/30/96 03:37:40 PM Hoested Methods, Inc. 37 Brookside Rood Waterbury, CT 06708 (203) 755.16W Page i of 1

1-11 1-12
P-16
P-15 1-g
P 13
I-1 0
�i P-14
P-12
_ J-4 P-11 J-3
P-10
Outlet
Project Title: Business Court, NorthChase Project Engineer. Klein Engineering and Associates
dA-A96G1ee196013 - business courhpipingai.sfm Klein Engineering and Asanc StormCAD v1.0
09/04/96 04:12.26 PM Haestad Methods, Inc. 37 Brookelde Road Waterbury, CT 06708 [phone] Page 1 of 1

STORM DRAINAGE CALCULATIONS
Node
Inlet
Inlet
wet
INet
Rim
bump
Downstream
Pipe
Downstream
Length
Diaoherge
Section
Const ueted
Area
C
Intensity
Discharge
Elevation
Elevation
Node
Sump
(ft)
(CIS)
S¢e
Slope
(acres)
VPAV)
(CIS)
(ft)
(ft)
Elevation
(}tm)
(ft)
1-12
0.82
0.70
7.23
4.18
34.73
31.73
1-8
P-16
30.23
18
4.18
18 Inch
0.083333
1-11
1.13
0.70
723
5.76
3423
3123
1-10
P-15
30.73
20
5.76
18 Inch
0.026000
1-10
1.44
0.70
7.23
7.35
3423
30.73
1-9
P-14
30.48
186
13.11
24 inch
0.001344
1-9
1.61
0.70
723
8.21
34.48
30.48
1-8
P-13
3023
112
21.32
30 Inch
0.002232
1-8
2.33
0.70
723
11.89
34.73
30.23
J4
P-12
29.91
62
37.39
30 kWh
0.005161
J4
WA
WA
N/A
WA
36.00
29.91
J-3
P-11
28.80
215
37.39
36 inch
0.005183
J-3
WA
N/A
WA
WA
1 36.00
28.80
Outlet
P-10
28.00
154
37.39
36 'arch
0.005195
Project Title: Business, Court, NorthChase Project Engineer: Klan Engineering and Associates
dA ..196fil"\96013 - business courtlp7pirge1.vtm Klein Engineering and Assoc StorrnCAD v1.0
09/30/96 03:50:23 PM Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 06708 [phone] Page 1 of 1

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Project Title: Business Court, NorthChsse Project E
d:1...18681es186013 - business cou 1 ngineer: Klein Engineering and Associates
mPMrr0s1 stm Klein Engineering and Assoc StormCAD v1.0
00/30/96 04:11:27 PM Meested Methods, Inc. 37 8rookside Road Waterbury, CT 06708 [phone] Page 1 of 1

DOT Report
Pipe
-Node-
Upstream
Downstream
Inlet
Area
(acres)
Inlet
CA
(acres)
Total
CA
(acres)
-Ground-
Upstream
Downstream
(ft)
-HGL-
Upstream
Downstream
(ft)
-Slope-
Energy
Constructed
(Itift)
Section-
Discharge
Capacity
(cis)
Section-
Shape
Size
Length
(ft)
Average
Velocity
(ft/s)
Descfiption
P-10
1-12
0.82
0.57
0.57
34.73
32.51
0.003655
4.18
Circular
18
3.42
1-8
34.73
32.67
0.083333
30.32
18 inch
P-15
1-11
1.13
0.79
0.79
3423
33.63
0.003012
5.76
Circular
20
3.26
1.10
3423
33.57
0.025000
16.61
18 inch
P-14
1-10
1.44
1.01
1.80
3423
33.57
0.003359
13.11
Circular
186
4.17
1-9
34.48
32.95
0.001344
8.29
24 inch
P-13
1-9
1.61
1.13
2.03
34.48
32.05
0.002432
21.32
Circular
112
4.36
1-8
34.73
32.67
0.002232
19.38
30 inch
P-12
1-8
2.33
1.63
5.13
34.73
32.67
0.007331
37.39
Circular
62
8.13
J4
36.00
31.98
0.005161
29.47
30 inch
P-11
J-4
WA
N/A
6.13
36.00
31.90
0.004181
37.39
Circular
215
6.67
J-3
36.00
31.35
0.005163
47.92
36 inch
P-10
J-3
N/A
WA
5.13
36.00
31.35
0.002878
37.30
Circular
154
5.57
Outlet
35.00
31.00
0.005195
48.07
36 inch
Project Title: Business Court, NorthChase Project Engineer: Klein Engineering and Associates
d:'L..1968iea196013 - business courhplpingel.atrn Klein Engineering and Assoc StomrCAD v1.0
09/30/96 04:12:33 PM Haested Methods. Inc. 37 8rookeide Road Waterbury, CT 06708 (203) 755-16W Page 1 of 1

Combined Pipe/Node Report
Pipe
Upstream
Dowrstream
Length
Inlet
Inlet
Inlet
Total
Inlet
Section
Capacity
Average
Upstream
Downstream
Node
Node
(ft)
Area
C
CA
CA
Discharge
Size
(ch)
Velocity
Invert
Invert
(aces)
(acres)
(acres)
(c1s)
Mrs)
Elevation
Elevation
(ft)
(ft)
P-16
1-12
1-8
18
0.82
0.70
0.57
0.57
4.18
18 inch
30.32
3.42
31.73
3023
P-15
1-11
1-10
20
1.13
0.70
0.79
0.79
5.76
18 inch
16.61
3.26
31.23
30.73
P-14
1-10
I-9
186
1.44
0.70
1.01
1.80
7.35
24 inch
829
4.17
30.73
30.48
P-13
1-9
1-8
112
1.61
0.70
1.13
2.93
8.21
301nch
19.38
4.36
30.48
30.23
P-12
1-8
J-4
62
2.33
0.70
1.63
5.13
11.89
30 inch
29.47
8.13
30.23
29.91
P-11
J-4
J-3
215
WA
NlA
N
5.13
WA
36 inch
47.92
6.67
29.91
28.80
P-10
J-3
Outlet
154
N/A
WA
N
5.13
NIA
36 inch
48.07
5.57
28.80
28.00
Project Title: Business Court, NorthChase
d:1..19661e r%S013 - business cou n sl.stm Klein E Project Engineer: Klein Engineering arid Atv1ee
mWW 9 Engineering and Assoc StonnCAD v1.0
09/04/96 04:12:40 PM Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 06708 [phone] Page 1 of 1

Node Report
Node
Inlet
Area
(acres)
Inlet
C
Inlet
CA
(acres)
External
CA
(acres)
Total
CA
(acres)
INet
TC
(min)
External
TC
(min)
Upstream
Flow
Time
(min)
System
Flow
Time
(min)
System
Intensity
(ffvhr)
Total
Watershed
(CIA)
(cfs)
Additional
Flaw
(cfs)
Carryover
(cfs)
Known
Flow
(cfs)
1-12
0.02
0.70
0.57
0.00
0.57
5.00
0.00
0.00
5.00
7.23
4.18
0.00
0.00
0.00
1-11
1.13
0.70
0.79
0.00
0.79
5.00
0.00
0.00
5.00
7.23
5.76
0.00
0.00
0.00
1-10
1.44
0.70
1.01
0.00
1.80
5.00
0.00
5.10
6.10
7.23
13.11
0.00
0.00
0.00
1-9
1.61
0.70
1.13
0.00
2.93
5.00
0.00
5.84
5.84
723
21.32
0.00
0.00
0.00
1-8
2.33
0.70
1.63
0.00
5.13
5.00
0.00
627
6.27
723
37.39
0.00
0.00
0.00
J-4
N/A
N/A
N/A
WA
5.13
WA
0.00
6.40
6.40
723
37.39
WA
N/A
WA
J-3
N/A
WA
N/A
WA
5.13
WA
0.00
6.94
6.94
7.23
37.39
WA
N/A
N/A
Outlet
WA
N/A
WA
WA
5.13
WA
0.00
7.40
7.40
7.23
37.39
WA
WA
N/A
Project Title: Business Court, NorthChase Project Engineer: Klein Engineering and Associates
d:..A9661est96013 - business courtopingat.atm Klein Engineering and Assoc StormCAD v1.0
09104/96 04:12:S4 PM Heestad Methods, Inc. 37 Brookside Road Waterbury, CT 06708 [phone] Page 1 of 1

Pipe Report
Pipe
Upstream
Downstream
inlet
Inlet
Inlet
Total
System
Discharge
Lerngdn
Constructed
Section
Roughness
Capacity
Node
Node
Area
C
CA
CA
Intensity
(cis)
(ft)
Slope
Size
WS)
(acres)
(acres)
(acres)
(in/hr)
(})
P-16
1-12
1-8
0.82
0.70
0.57
0.57
7.23
4.18
18
0.083333
18 inch
0.013
30.32
P-15
1.11
1-10
1.13
0.70
0.79
0.79
723
5.76
20
0.025000
18 inch
0.013
1e.61
P-14
1.10
1-9
1.44
0.70
1.01
1.80
7.23
13.11
188
0.001344
24 inch
0.013
8.29
P-13
I.9
1-8
1.61
0.70
1.13
2.93
7.23
21.32
112
0.002232
30 inch
0.013
19.38
P-12
1.8
J4
2.33
0.70
1.63
5.13
7.23
37.39
62
0.005161
30 inch
0.013
29.47
P-11
J4
J-3
WA
N/A
WA
5.13
7.23
37.39
215
0.005163
36 Inch
0.013
47.92
P-10
J-3
Outlet
WA
N/A
WA
5.13
7.23
37.39
154
0.005195
36 inch
0.013
48.07
Project Title: Business Court. NodhChaee Project Engineer: Klein Engineering and Associates
dA ..196filea186013 - business couMpipinget.stm Klein Engineering and Assoc StormCAD v1.0
09104/96 04:13:17 PM Haested Methods. Inc. 37 Brookside Road Waterbury. CT 06708 [phone] Page 1 of 1

Piping Table
Downstream
Upstream
Pipe
Length
Discharge
Constructed
Average
Downstream
Downstream
Downstream
Upstream
Upstream
m
Node
Node
(1t)
(cfs)
Slope
Velocity
Invert
HGL
Cover
IInver
Wit)
(Rh)
Elevation
(ft)
(ft)
Elevation
(ft)
(fl)
(ft)
1-8
1-12
P-16
is
4.18
0.083333
3.42
3023
32.67
3.00
31.73
32.51
1-10
1-11
P-15
20
5.76
0.025000
3.26
30.73
33.57
2.00
3123
33.63
1-9
1.10
P-14
186
13.11
0.001344
4.17
30.48
32.95
2.00
30.73
33.57
1-8
1-9
P-13
112
21.32
0.002232
4.36
30.23
32.67
2.00
30.48
32.95
J-4
1-8
P-12
62
37.39
0.005161
8.13
29.91
31.98
3.59
30.23
32.67
J-3
J4
P-11
215
37.39
0.005163
6.67
28.80
31.35
4.20
29.91
31.90
Outlet
J-3
P-10 1
154
37.391
0.006195
5.57
28.00
31.00
4.00
28.80
31.35
Project Tole: Business Court, NorthChase Project Engineer. Klein Engineering and Associates
d:\..t96fi1esWW13 - busineo cour8pipingst.sfm Klein Engineering and Assoo StormCAD v1.0
09/04196 04:13:35 PM Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 06708 [phone] Page 1 of 1

KLEIN ENGINEERING AND ASSOCIATES
PROJECT: Technology Court PROJECT NO.: 96013
CLIENT: Ammons-NorthChase Corporation DATE: September 1996
LOCATION: New Hanover County, NC PREPARED BY: JKK
SUBJECT: Storm Drainage Calculations for Enterprise Entrance Culverts
GIVEN: Design Storm: 10-year
Runoff Coefficients:
_ Commercial 0.70
SOLUTION:
1. Due to the relative small size of the project, use Tc = 5 minutes.
2. Design Storm Rainfall:
- Using return period and time indicated above, use an intensity of:
7.23 inches/hour
3. Stormwater Runoff Amounts
Use the Rational Method using the following equation:
Q= C x i x A Q (cfs); A (Acres); i (in/in)
DRAINAGE AREA
ENTRANCE
LOCATION AREA AREA
(1) (SF) (AC) C i (in/hr) Q (CFS)
North 145750 3.35 0.70 7,23 16.9
South 41290 0.95 0.70 7.23 4.8
4. PIPING DESIGN:
REQ'D
DESIGN
ENTRANCE PIPE
PIPE
PIPE
LOCATION DIA VELOCITY
SLOPE
SLOPE
UPPER
LOWER
(1) Q (CFS) (IN) (FPS)
LENGTH
INVERT
INVERT
North 16.9 24 5.4
0.56
0.60 90
31.50
30.96
South 4.8 18 2.7
0.21
0.25 90
32.75
32.53
Note: Slopes based on pipe with n =
0,013 .
Technology Court - Roadway Culvert Design

I 1 1 0031m 41AM lrAT"xw3Ksl
25-YEAR, 5-MINUTE
AND
10-YEAR,10-MINUTE
STORM EVALUATION

Piping Table
2.5 'Ce .Fa lcorb *-t
Downstream
Node
Upstream
Node
Pipe
Length
(ft)
Discharge
(Cfs)
Constructed
Slope
(^b)
Average
Velocity
Otis)
Dovmstreem
Invert
Elevation
(ft)
Downstream
HGL
(ft)
Dov r treem
Cover
(ft)
Upstream
Invert
Elevation
(ft)
Upstreem
HGL
(ft)
1-1
1-10
P-7
18
5.06
4.17
2.86
30.75
33.03
2.48
31.50
33.68
1-8
1-9
P-8
18
6.56
1.11
3.71
31.15
34.38
1.73
31.35
34.76
1.7
1-8
P-5
194
13.40
0.10
4.27
30.95
34.01
2.65
31.15
34.69
1-1
1-7
P-4
164
19.61
0.12
3.99
30.75
33.63
1.48
30.95
34.01
1-2
1-11
P-9
18
9.66
2.17
5.47
31.50
34.73
1.73
31.89
36.56
1-1
1.2
P-8
266
18.48
0.28
5.88
30.75
33.63
1.98
31.50
35.41
J-2
1.1
P-3
44
49.47
0.68
7.05
30.451
33.43
2.55
30.75
33.63
J-1
J-2
P-2
212
.44
0.61
8.42
29.15
31.93
3.85
30.45
33A3
Outlet
J-1
P-1
106
58.44
0.61
8.92
28.50
31.00
3.50
29.15
31.93
Project Tille: Business Court, NorthCheae Project Engineer: Klein Engineering and Associates
d:1..196filas196013 - business courltpipingril.stm Klein Engineering and Assoc StormCAD v1.0
09/30/98 04:06:56 PM Hassled Methods, Inc. 37 Brookside Roed Waterbury, CT 06708 [phone] Page 1 of i

Piping Table
25 KEAst ST0etA
Downstream
Node
Upstream
Node
Pipe
Length
(it)
Discharge
(cfs)
Constructed
Slope
(1vft)
Average
Velocity
(fvs)
Downstream
Invert
Elevation
(ft)
Downstream
HGL
(it)
Downstream
Cover
(ft)
Upstream
Invert
Elevation
(it)
Upstream
HGL
(ft)
1-8
1.12
P-18
18
4.72
0.083333
2.94
30.23
32.91
3.00
31.73
32.69
1-10
1-11
P-15
20
6.50
0.025000
3.68
30.73
34.09
2.00
31.23
34.16
1-9
1-10
P-14
186
14.78
0.001344
4.70
30.48
33.29
2.00
30.73
34.09
1-8
1-9
P-13
112
24.04
0.002232
4.90
30.23
32.91
2.00
30.48
33.29
J-4
1-8
P-12
62
42.15
0.005161
8.88
29.91
32.12
3.59
30.23
32.91
J-3
J-4
P-11
215
42.1
0.005163
6.92
26.80
31.50
4.20
29.91
32.12
Outlet
J3
P-10
154
(Elsa0.005195
6.13
28.00
31.00
4.00
28.80
31.50
Project Title: Business Court, NorthChass Project Engineer: Klein Engineering and Associates
dA ..\9681ee198013 - business courtlpipinget.atm Klein Engineering and Assoc StormCAD v1.0
09/30MG 04:1028 PM Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 06708 [phone] Page 1 of 1

STORM DRAINAGE CALCULATIONS
10-'( EAR, �0 to IN TE
Node
Inlet
Area
(acres)
Inlet
C
Inlet
Intensity
(u+Rv)
Intl
Discharge
(cfs)
Rim
Elevation
(it)
Sump
Elevation
(ft)
Dovma40am
Node
Pine
Dovmsbeom
Sump
Elevation
(ft)
Length
(it)
Discharge
(cfs)
Section
Size
Constructed
Slope
(%)
1.-10
0.88
0.70
0.30
3.91
34.73
31.50
1-1
P-7
30.75
18
3.91
18 inch
4.17
1-9
1.14
0.70
6.30
5.07
34.38
31.35
1-8
P-6
31.15
18
5.07
18 inch
1.11
1-8
1.19
0.70
6.30
529
34.38
31.15
1-7
P-5
30.95
194
10.33
24 inch
0.10
1-7
1.08
0.70
6.30
4.80
35.60
30.05
1-1
P-4
30.75
164
14.67
30 inch
0.12
1-11
1.68
0.70
6.30
7.47
34.73
31.89
I-2
P-9
31.50
18
7.47
18 inch
2.17
1-2
1.53
0.70
6.30
8.81
34.73
31.50
I-1
P-8
30.75
266
1425
24 inch
0.28
1-1
1.10
0.70
6.30
34.73
30.75
J-2
P-3
30.45
44
36.14
36 inch
0.68
J-2
1.66
0.70
6.30
14
6.93
36.00
30.45
J-1
P-2
29.16
212
42.56
36 inch
0.61
J-1
WA
N/A
N/A
WA
36.00
29.15
Outlet
P-1
28.60
108
41 97
Y6 inch
0.61
Project Title: Business Court, NorthChase Project Engineer: Klein Engineering and Associates
d:l..t96fiIo%196013 - business courtlpipingnl.stm Klein Engineering and Assoc StormCAD v1.0
10/01/96 08:07:29 PM Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 06708 [phone] Page 1 of I

STORM DRAINAGE CALCULATIONS
10'{EAN2 , to Mtra.+-rE
Node
Inlet
Inlet
Inlet
Inlet
Rim
Sump
Downstream
Pipe
Downstream
Length
Discharge
Section
Constructed
Area
C
Intensity
Discharge
Elevation
Elevation
Node
Sump
(it)
(cfs)
Size
Slope
(acres)
(inav)
(c(s)
(it)
(it)
Elevation
(fttft)
(it)
1-12
0.82
0.70
6.30
3.65
34.73
31.73
I-8
P-18
30.23
18
3.65
18 inch
0.083333
kit
1.13
0.70
6.30
5.02
34.23
31.23
1-10
P-15
30.73
20
5.02
18 inch
0.025000
1-10
1.44
0.70
6.30
6.40
34.23
30.73
13
P-14
30.48
188
11.38
24 inch
0.001344
4
1.61
0.70
6.30
7.16
34.48
30.48
1-8
P-13
30.23
112
18.05
30 Inch
0.002232
1-8
2.33
0.70
6.30
10.36
34.73
30.23
J-4
P-12
29.91
62
31.21
30 inch
0.005161
J-4
WA
WA
WA
N/A
36.00
29.91
J3
P-11
28.80
215
8 inch
0.005163
J-3
WAWA
N/A
N/A
36.00
28.80
Outlet
P-10
28.00
154
30.51
arch
0.005195
Project Tale: Business Court. NorthChase Project Engineer. Klein Engineering and Associates
d:1...19681ea196013 - business cuurtlpipingat.stm Klein Engineering and Assoc StormCAD v1.0
10/01198 08:09:51 PM Hassled Methods. Inc. 37 Brookside Road Waterbury. CT 06708 [phone] Page 1 of 1

SECTION 13 - ENVIRONMENT PROTECTION:
SEDIMENTATION AND EROSION CONTROL
AND
AIR AND WATER QUALITY PROTECTION

TECHNICAL SPECIFICATIONS
SECTION 13: ENVIRONMENT PROTECTION: EROSION AND SEDIMENT
CONTROL, AND WATER QUALITY PROTECTION
T-13.01 GENERAL:
The Contractor shall maintain all
boundaries free from environmental
Federal, State or local regulations.
work areas within and outside the project
pollution which would be in violation of any
T-13.02 EROSION AND SEDIMENT CONTROL:
All work shall comply with the regulations of the North Carolina Sedimentation
Control Act of 1973.
T-13-02.1 DISTURBED AREAS:
No disturbed area shall be denuded for more than 30 calendar days unless it is under
continuing active construction.
T-13.02.2 AREAS UNDER ACTIVE CONSTRUCTION:
When the length of time during which an area is under active construction for longer
than 15 days, it may be necessary to install silt fences or other temporary
sedimentation and erosion control devices to prevent off -site sedimentation damage.
All erosion control devices shall be installed and maintained as required by the North
Carolina Department of Environment, Health, and Natural Resources. Such
measures may consist of berms, dikes, drains, and sediment basins, or use of fiber
mats, woven plastic filter cloths, gravel, mulches, bituminous spray, and other
erosion control devices or methods. Refer to drawings for minimum requirements
for erosion and sediment control devices.
T-13.02.3 FERTILIZING AND SEEDING: Refer to drawings
T-13.02.4 SILT FENCE:
Silt fence shall be used as a permeable barrier that retains sediment on the
construction site. Use a synthetic filter fabric which is certified by the manufacturer
or supplier conforming to the following requirements:
Filtering efficiency - 85% minimum
Tensile Strength of 20% maximum elongation 30 lbs/lin in (min)
Slurry Flow Rate - 0.3 gal/sq fl/min
Installation and maintenance shall be by the manufacturers' recommendations.
Materials shall meet the requirements of the North Carolina Department of
Transportation.
T-13.03.1 PROTECTION OF AIR OUALITY:
The air pollution likely to occur due to construction operations shall be minimized by
wetting down bare soils during windy periods, requiring the use of properly operating
combustion emission control devices on construction vehicles and equipment used by
contractors, and by encouraging the shutdown of motorized equipment not actually in
T-13-1

use. Trash burning will not be permitted on the construction site.
T-13.03.2 PROTECTION OF WATER QUALITY:
The Contractor shall observe the rules and regulations of the State of North Carolina
and agencies of the United States Government prohibiting the pollution of stream or
river waters by the dumping of any refuse, rubbish or debris therein.
T-13.03.3 PROTECTION OF SEWERS:
The Contractor shall take adequate measures to prevent the impairment of the
operation of the existing sewer system and prevent construction materials, pavement,
concrete, earth, or other debris from entering a sewer or sewer structure.
T-13-2

ml
01/26/1992 03:07 910-762-2173 kLEIN ENG AND ASSOC
01/09/1995 19:50 310-763-2173 1dEIN ENG AM ASSOC
Jii1.1-M-19:$ 1 J I A5 FE M E 49 Wl LM WC; OFF 1 CE m
85% T6f31tMOVAL
YA; 2193
PAGE 01
PAGE 01
E
DEPTH
3'
3.5'
4.0'
0'
5.0'
3.5'
6.0'
6.5'
UY
7.5'
10%
.9
.8
.7
.6
.S
0
0
0
0
0
20% 11.7
1.3
1.2
1.1
1.0
.9
.a
.7
.6
.5
30%
124
2.2
1.9
1.8
1.6 1
1.3
1.3
1.2
11.0
.9
40%
13.4
3.0
2.6
2.4
2.1
1.9
1.6
1.4
1.1
1.0
50%
14,2
3.7
3.3
3.0
2.7
2.4
2.1
1.8
1.5
1.3
600
5.0
4.5
3.8
3.5
3.2
2.0
2.6
2.3
2.0
1.6
x
6.0
5.2
4.5
4.1
3.7
3.1
2.9
2.S
2.1
1.9
i
r
6.8
6.Q
5.2
4.7
4.2
3.7
3.2
2.7
2.2
2.0
%
7.5
6.5
5.8
5.3
4.8
4.3
3.8
3.3
2.8
1.3
8.2
7.4
16.8
6.2
5.6
5.0
4.4
3.9
3.Z
2.6
90% 7w it1CNC m
NO VWvUATICD MT1R REQUMED
3'
IS'
4.0'
4.5'
S.0'
5.5'
6.0'
6.5'
7.0'
7.5'
RDBPTS
IIe� %
109
1.3
1,0
.8
.7
.6
.S
.4
.3
.2
.1
200
2.4
2.0
1.8
1.7
1.3
1.4
1.2
1.0
.9
.6
30%
3.5
3.0
2.7
2.5
2.2
1.9
1.6
1.3
1.1
.8
40%
4.5
4.0
3.3
3.1
2.8
2.5
2.1
1.9
1.4
1.1
50%
5.6
$.0
4.3
3.9
3.5
3.1
2.7
2.3
1.9
1.5
600
7.0
&0
15.3
4.8
4.3
3.9
3.4
2.9
2.4
1.9
70%
8.1
7.0
6.0
5.3
5.0
4.5
3.9
3.4
2.9
IS
80%
9.4
8.0
7.0
6.4
3.7
3.2
4.6
4.0
3.4
2.8
90%
10.7
9.0
7.9
7.2
6.5
9.9
5.2
4.6
3.9
3.3
10n
12.9
10.0
3.9
8.1
7.3
6.6
5.9
5.1
4.3
3.6
rho fumow a
TM Me tRbles
re a
0.

STORM WATER MANAGEMENT
OPERATION AND MAINTENANCE PLAN
AND
DEED RESTRICTIONS

KLEIN ENGINEERING 322Sout 4thStreet
AND ASSOCIATES Wil(910) s3 900 of
October 1, 1996 File .: 95021
Linda Lewis NC � n
NC DE►-INR � Division of Environmental Management OCT 0719961
Water Quality Section S 'F 9re to 64-
127 Cardinal Drive Extension ----------------- --
Wilmington, NC 28405-3845
Re: Technology Court Subdivision, NorthChase Park of Commerce
New Hanover County
Engineered System Submittal
Dear Ms. Lewis:
Please find enclosed submittal for the above referenced project. The project involves s bdivision
of property into individual lots intended for commercial usage. Included are construct on.of two
(2) detention facilities to serve the project area. Included for your review are the folio ing',"
1. Completed application form and application fee of $385""
2. Three (3) copies of the Drawings
3. Three (3) copies of the Storm Drainage Narrative package which includes Narrative, Detention
Pond and Piping Calculations, O&M Agreement as well as Deed Restrictions.
Should, here be any questions concerning the enclosed items or additional copies desi ed, please
contact our office. Under separate cover, we have submitted information to Ms. Beth Easley for
Erosion and Sedimentation Control consideration.
Sincerely,
KLEIN ENGINEERING AND ASSOCIATES STORM 0RM A �ER
�J
N K. KLEIN, PE IIn E C E I E D
enclosures �ulu(� OCT 0 7 996
cc: Mr. Andrew L. Ammons _'_/'
PROJ �`D I