SW6121107_HISTORICAL FILE_20121130

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
swz�AR
DOC TYPE
❑ CURRENT PERMIT
❑ APPROVED PLANS
HISTORICAL FILE
COMPLIANCE EVALUATION INSPECTION
DOC DATE
lz2U
YYYYM M D D

310 Simmons Road, Suite K
Knoxville, TN 37922
Phone:[phone]
Fax:[phone]
Email: [e-mail]
Transmittal
To:
Mike Lawyer— Fayetteville Regional Office
Address:
225 Green Street
Fayetteville, NC 28301
From:
Chad Brown
Date:
Nov. 29, 2012
Re:
NC-PEM-4005
Mr. Lawyer
®C8dR— RO
NOY 3 0 2012
1'@
The referenced project is located in Robeson County, North Carolina. The site is part of the Carolina
Commerce & Technology Center Industrial Park on Comtech Drive. The project consists of a new
building along with associated access drives, loading dock and parking.
Please find enclosed the following:
Stormwater Management Permit Application Form
A check for the review fee ($505)
2 copies of the engineered drawings
1 copy of the Drainage Report
Supplement Forms for each BMP
• O&M Agreements for each BMP
• Supporting Calculations
1 copy of the Soils Report
If you need any further information or have any questions, please do not hesitate to call.
Tha4Bron,
ChaE

SINCE FROEHLING & R❑BERTSON, INC.
Engineering Stability Since 1881
Re 327 East Jenkins Street
Fayetteville, North Carolina 283061 USA
1 8 8 1 T 910.323,9832 1 F 910.232.5455
April 5, 2012
®ENR-FV,
Mr. Tom Wortham
Senior Vice President of Architecture & Business Development NOV 3 0 2,
The Hollingsworth Companies Two Centre Plaza ®��pp��NVO
Clinton, TN 37716
Subject: Proposal for Geotechnical Study
NC-PEM-4005 — Robeson County NC Southern Advantage
Robeson County, North Carolina
F&R PROPOSAL NO. 1364-01OG
Mr. Wortham,
Pursuant to your email dated April 4, 2012, Froehling and Robertson, Inc. (F&R) is pleased to
submit this proposal to perform a geotechnical study for the subject project in Robeson County,
North Carolina. This proposal presents our understanding of the project, our proposed scope of
services and costs to perform these services.
1.0 PROJECT INFORMATION
Our understanding of this project is based on information provided by Mr. Tom Wortham of The
Hollingsworth Companies and our experiences with similar projects. Included in the provided
information were drawings that portrayed the site and location of the building. The project site is
located approximately 3 miles southeast of Pembroke, NC on the east side of Deep Branch Road
and south of Comtech Drive. The site is 17.69 acres in area. According to Google Earth image
taken in December 2011, the site at that time was cleared of heavy vegetation and was used as
farmland.
The provided drawing indicates that the proposed project will consist of an approximate 360 feet
by 300 feet building with parking and driveways to the west and north of the planned building. No
structural information has been provided at this time; however, we have assumed that the
building will be a single -story warehouse type building with maximum column loads and
continuous wall loadings on the order of 100 kips and 4 kips per linear foot, respectively.
Based on elevation data obtained from Google Earth, existing site grades appear to be relatively
level; thus we have assumed that mass grading will be minor cuts and fills to develop the site
grades.
Corporate HQ: 3015 Dumbarton Road Richmond, Virginia 23228 T 804.264.2701 F 804.264.1202 www.fandrxom
VIRGINIA • NORTH CAROLINA • SOUTH CAROLINA • MARYLAND • DISTRICT OF COLUMBIA
A Minority -Owned Business

Mo
Should any of this information be incorrect or if additional information becomes available,
please contact us so we may review the proposed scope of services and make any appropriate
changes.
2.0 SCOPE OF SERVICES
The purposes of our involvement on the project would be as follows: 1) provide general
descriptions of the subsurface soil conditions encountered at the locations explored, 2) provide
foundation design recommendations, and 3) comment on other geotechnical aspects of the
proposed development. In order to accomplish the above objectives, we propose to undertake
the following scope of services.
2.1 Field Exploration
F&R proposes to evaluate foundation support conditions with a total of 6 sail test borings.
Four of the borings will be drilled within the footprint of the building to depths of 25 feet each
and the remaining borings will be drilled to depths of 10 feet below the exiting ground surface.
Should it be necessary to extend the borings to a greater depth to (1) further evaluate possible
deep foundation support, we will notify you of this need at the time of the exploration or (2)
should you need the site's seismic classification, we can extend one of the borings in
accordance with 2010 NC Building Code.
For the purpose of this proposal, 120 linear feet of drilling are considered for our exploration
unless it is necessary to extend the borings deeper as stated above. If the prescribed
termination depth does not encounter suitable soils, we propose to extend the borings deeper
until suitable soils are encountered. Groundwater levels will be taken shortly after drilling is
completed and a temporary piezometer may be installed in one of the borings to obtain
stabilized groundwater readings, if shallow water table is encountered.
At this time, we would not propose to obtain undisturbed samples for consolidation testing or
the use of specialized equipment such as dilatometer testing that would be required to perform
detailed evaluations of shallow foundation support. Should such testing and analyses be
warranted by encountering softer or loose subsurface soils than anticipated, we would notify
you of such conditions during the progress of the exploration.
Standard Penetration Resistances and split -spoon soil samples will be obtained in the soil test
borings at designated intervals in general compliance with ASTM standards. The Standard
Penetration Resistances will be evaluated with regard to foundation capacity, soil strength and
density, and the split -spoon samples utilized for engineering classification and laboratory
testing.
Prior to beginning field operations, we will contact the local utility locators (North Carolina One
Call) to mark the existing public underground utility lines but private underground lines will not
be marked. Please note that NC One Call requires a minimum of 48 to 72 hours' notice to mark
The Hollingsworth Companies 2 Robeson County NC Southern Advantage
F&R Proposal No. 1364-OIOG April S, 2012

utilities prior to inception of drilling work. F&R cannot be responsible for damage to any
existing underground utility lines that are not marked or marked incorrectly during our drilling
operations.
We anticipate that the site will be readily accessible to our truck or ATV mounted drilling
equipment (including proper overhead clearance) and that no dozer clearing or site leveling will
be required. By the nature of the work to be performed, our drilling activities may result in
disturbances to the site. Reasonable efforts will be made to reduce disturbance; however,
remediation of the site to a pre -explored condition is not included. Completed boreholes will be
backfilled with auger cuttings (soil), but may open sometime following our work. Grouting or
otherwise sealing the upper portion of the boreholes can be performed if requested for a per -hole
fee.
2.2 Laboratory Examination and Testing
At the completion of the fieldwork, representative soil samples will be transported to our office for
visual examination and classified by a member of our professional staff, and samples will be
selected for laboratory testing to assist in the classification of the soils. Laboratory testing will
include percent fines, Atterberg limits, and water contents. Should additional testing such as
consolidation testing be needed to evaluate the compressibility of soft soils, we will obtain your
approval before any additional work is performed.
2.3 Engineering Analyses and Report
At the completion of the drilling operations, the findings of our field exploration and laboratory
testing will be analyzed by our engineering staff to determine the appropriate foundation type
to support the building. The results of our exploration and engineering evaluation will be
presented to you in our Geotechnical Report. This report will include, but will not be limited to,
the following:
• Site & Boring Location Plans;
• Boring Logs including a chart illustrating the soil classification criteria and
terminology and symbols used on the boring logs, profiles of the existing
soils;
• Laboratory test results;
• Discussion of subsurface soil and groundwater conditions encountered;
• A general description and evaluation of the site considering the proposed
project;
• Recommendations for the design and construction of a shallow foundation
system for the support of the structure;
The Hollingsworth Companies 3 Robeson County NCSouthern Advantage
F&R Proposal No. 1364-OIOG April 5, 2012

• Estimated post -construction settlements both total and differential for
shallow spread foundation types;
• Recommendations for site preparation, compacted fill placement and
subgrade preparation.
• Recommendations for difficult excavation, groundwater control and
dewatering, if required;
• Recommendations for the design of flexible and concrete pavement
structures based on an assumed California Bearing Ratio (CBR) data to
include thickness of asphalt and concrete, and base courses;
• Other design considerations we believe may impact the construction phase
of the project.
Optional Recommendations, if desired
Provide seismic site classification based on averaged N-values and/or recommended
spectral accelerations with evaluation of seismic hazards i.e. liquefaction potential and
mitigations
Our scope of services does not include survey services, quantity estimates, preparation of plans
or specifications, formal slope stability analyses, detention pond considerations, evaluations of
earthquake motions, or the identification and evaluation of wetland or other environmental
aspects of the project site. We note that F&R provides a full range of Construction Materials
Testing services and is available to discuss these as the project moves into its construction
phase.
3.0 FEES
We propose a Lump Sum Fee of $3,635.00 for the base scope of services outlined above. Our
services will be performed in accordance with the above provided scope and fee(s). Should
unforeseen conditions require additional services, these services would not be performed without
your authorization.
No site leveling or other services not discussed herein are included in the provided Lump Sum fee.
If needed, the fees for services beyond our proposed scope would be in accordance with our
prevailing unit fee schedule or as negotiated at that time. Requested geotechnical consultation
after issuance of the completed subsurface exploration and geotechnical evaluation report,
attendance to meetings, or other requested services not included in the provided base scope and
fee, will be charged in accordance with our prevailing unit fee schedule.
4.0 SCHEDULING
Based on our present workload, F&R should be able to initiate the field exploration within 7
working days after receiving written authorization to proceed and clearing of utilities by others.
It is anticipated that the drilling will take 1 to 2 days to complete. Provided that no laboratory
The Hollingsworth Companies 4 Robeson County NC Southern Advantage
F&R Proposal No. 1354-010G April S, 2012

testing is required beyond the typical classification tests, we should be able to issue a final
report within 1 to 2 weeks following completion of the laboratory testing. Additionally, we can
provide verbal recommendations for support of the building within 3 to 4 days of completion of
the exploration.
4.0 AUTHORIZATION
In order to perform the proposed services, we would ask that you please execute and return a
copy of the attached Agreement for Engineering Services; your signature of acceptance would
formally authorize F&R to perform the work. Any exceptions to our proposal or special
requirements not covered in said proposal should be listed on the Agreement.
Please do not hesitate to contact us should you have any questions regarding this proposal or if
you need additional information and/or assistance. We look forward to, once again, working
with you on this new project.
Sincerely,
FROEHLG & N, INC.
ROBERTS�JE
William F. EdelenJr.,
Vice President
Senior Reviewed by Mike Walko
Gilles Bellot,{ L_ J
J? Branch Manager
Attachments: ASFE Important Information about your Geotechnical Engineering Proposal
Agreement for Engineering Services
The Hollingsworth Companies 5 Robeson County NCSouthern Advantage
F&R Proposal No. 1364-010G April S, 2012

91NCE LOST
FOR
1F K GEOTECHNICAL SERVICES
Date: April S, 2012
F&R Proposal No.: 1364-01OG
Project: Roberson County NC Southern Advantage
Location: Robeson County, INC
UNIT
ESTIMATED
ITEM
RATE
UNITS
QUANTITY
COST
1.0 Field Exploration
1.1 Mobilization of Drilling Crew and Equipment
$
500.00
LS
1 $
500.00
1.2 Soil Test Borings -SPT N-values< 50 bpf(< 60 ft. deep)
$
10.00
ft.
100 $
1,DDO.00
1.3 Soil TestBorings -SPT N-values>50 bpi (<60 ft. deep)
$
17.00
ft.
$
-
1.4Soil Test Borings -SPT N-values< 50 bpf(> 60 ft. deep)
$
25.00
ft.
$
-
1.5 Temporary Piezometer
$
4.50
ft.
$
-
1.6 Bag Samples
$
20.00
ea.
5
-
1.7 3 in. Shelby Tube Sample
$
65.00
ea.
$
-
1.8 Difficult Moving, Hand Clearing to Obtain Boring Access
$
125.00
hr,
$
-
1.9 Field Survey of Borings
LS
$
-
1.10 Crew Per Diem
$
250.00
day
1 5
250.00
1.11 Dilatometer Testing
$
-
LS
$
-
1.12 Resistivity Testing
LS
$
-
1.13 Infiltration Testing & Determination of Seasonal Groundwater Table
L5
$
-
__Subtot0-$L'
.1750Agl�
-
2.0 Laboratory Testing
2.1 Water Content ASTM D-2216)
$
10.00
ea.
,5 $
50.00
2.2 Percent Finer than No. 200 (ASTM 0-1143)
$
65.00
ea.
2 $
130.00
2.3 Atterberg Limits (ASTM D-4318)
$
75.00
ea.
1 $
75.00
2.4 Hydrometer (ASTM D-422)
$
125.00
ea.
$
-
2.5 CBR (ASTM D-1883)
$
150.00
ea.
$
-
2.6 Standard Proctor Compaction Testing (ASTM D-698)
$
125.00
ea.
$
-
2.7 Modified Proctor Compaction Testing (ASTM D-1557)
$
150.00
ea.
$
-
2.8 pH and Salinity Tests
$
80.00
ea.
$
-
�sw-r.
3.0 Professional Services
3.1 Staff Engineer
$
80.00
hr.
5 S
400.00
3.2 Professional Engineer
$
100.00
hr.
10 $
1,000.00
3.3 Senior Engineer
$
130.00
hr.
1 $
130.00
3.4 Draftsperson
$
75.00
hr.
0 $
-
3.5 Clerical
$
50.00
hr.
1 $
50.00
3.6 Travel Allowance
$
50.00
LS
1 $
50.00
Sutitotal� $ '
�.,�;-1 63000
1
TOTAL FOR GEOTECHNICAL
i-...__.....__
SERVICES �....�__......J._._
°•
41512012 Page 1 of 1 Cost Estimate.xls

Geotechnical Engineering ProposaMl
Participate in Development of the Subsurface
Exploration Plan
Geotechnical engineering begins with the creation of an effective sub-
surface exploration plan. This proposal starts the process by presenting
an initial plan. While that plan may consider the unique physical attri-
butes of the site and the improvements you have in mind it probably
does not consider your unique goals, objectives, and risk management
preferences. Subsurface exploration plans that are finalized without con-
sidering such factors presuppose that clients' needs are unimportant, or
that all clients have the same needs. Avoid the problems that can stem
from such assumptions by finalizing the plan and other scope elements
directly with the geotechnical engineer you feel is best qualified for the
project, along with the other project professionals whose plans are
affected by the geotechnical engineer's findings and recommendations.
If you have been told that this step is unnecessary; that client prefer-
ences do not influence the scope of geotechnical engineering service or
that someone else can articulate your needs as well as you, you have
been told wrong. No one else can discuss your geotechnical options
better than an experienced geotechnical engineer, and no one else can
provide the input you can. Thus, while you certainly are at liberty to
accept a proposed scope "as is," recognize that it could be a unilateral
scope developed without direct clienVengineer discussion; that authoriz-
ing a unilateral scope will force the geotechnical engineer to accept all
assumptions it contains; that assumptions create risk. Manage yourrisk.
Get involved.
Expect the Unexpected
The nature of geolechnical engineering is such that planning needs to
anticipate the unexpected. During the design phase of a project, more or
deeper borings may be required, additional tests may become neces-
sary, or someone associated with your organization may request a ser-
vice that was not included in the final scope. During the construction
phase, additional services may be needed to respond quickly to unantic-
ipated conditions. In the past, geotechnical engineers commonly did
whatever was required to oblige their clients' representatives and safe-
guard their clients' interests, taking it on faith that their clients wanted
them to do so. But some, evidently, did not, and refused to pay for legiti-
mate extras on the ground that the engineer proceeded without proper
authorization, or failed to submit notice in a timely manner, or failed to
provide proper documentation. What are your preferences? Who is per-
mitted to authorize additional geotechnical services on your project?
What type of documentation do you require? To whom should it be
sent? When? How? By addressing these and similar issues sooner
rather than later, you and your geotechnical engineer will be prepared for
the unexpected, to help prevent molehills from growing into mountains.
Have Realistic Expectations; Apply Appropriate
Preventives
The recommendations included in a geotechnical engineering report are
not final, because they are based on opinions that can be verified only
during construction. For that reason, most geotechnical engineering
proposals offer the construction observation services that permit the
geotechnical engineer of record to confirm that subsurface conditions
are what they were expected to be, or to modify recommendations when
actual conditions were not anticipated. An offer to provide construction
observation is an offer to better manage your risk. Clients who do not
take advantage of such an offer; clients who retain a second firm to
observe construction, can create a high -risk "Catch-22" situation for
themselves. The geotechnical engineer of record cannot assume
responsibility or liability for a report's recommendations when another
firm performs the services needed to evaluate the recommendations'
adequacy, The second firm is also likely to disavow liability for the rec-
ommendations, because of the substantial and possibly uninsurable risk
of assuming responsibility for services it did not perform. Recognize,
too, that no firm other than the geotechnical engineer of record can pos-
sibly have as intimate an understanding of your project's geotechnical
issues. As such, reliance on a second firm to perform construction
observation can elevate risk still more, because its personnel may not

have the wherewithal to recognize subtle, but sometimes critically impor-
tant unanticipated conditions, or to respond to them in a manner consis-
tent with your goals, objectives, and risk management preferences.
Realize That Geoenvironmental Issues Have Not
Been Covered
The equipment, techniques, and personnel used to perform a geoenvi-
ronmental study differ significantly from those used to perform a geo-
technical study. Geoenvironmental services are not being offered in this
proposal. The report that results will not relate any geoenvironmental
findings, conclusions, or recommendations, Unanticipated environmen-
tal problems have led to numerous project failures, If you have not yet
obtained your own geoenvironmental information, ask your geotechnical
consultant for risk management guidance. Do not rely on an environ-
mental report prepared for someone else.
Obtain Professional Assistance To Deal
with Mold
Diverse strategies can be applied during building design, construction,
operation, and maintenance to prevent significant amounts of mold from
growing on indoor surfaces. To be effective, all such strategies should
be devised for the express purpose of mold prevention, integrated into a
comprehensive plan, and executed with diligent oversight by a profes-
sional mold prevention consultant, Becausejust a small amount of water
or moisture can lead to the development of severe mold infestations, a
number of mold prevention strategies focus on keeping building sur-
faces dry. While groundwater, water infiltration, and similar issues may
be addressed as part of the geotechnical engineering study described in
this proposal, the geotechnical engineer who would lead this project is
not a mold prevention consullanl; none of the services being
offered have been designed or proposed for the purpose of
mold prevention.
Have the Geotechnical Engineer Work with
Other Design Professionals and Constructors
Other design team members' misinterpretation of a geotechnical engi-
neering report has resulted in costly problems. Manage that risk by hav-
ing your geotechnical engineer confer with appropriate members of the
design team before finalizing the scope of geotechnical service (as sug-
gested above), and again, after submitting the report. Also retain your
geotechnical engineer to review pertinent elements of the design team
members' plans and specifications.
Reduce the risk of unanticipated conditions claims that can occur when
constructors misinterpret or misunderstand the purposes of a geotechni-
cal engineering report. Use appropriate language in your contract docu-
ments. Retain your geotechnical engineer to participate in prebid and
preconslruction conferences, and to perform construction observation.
Read Responsibility Provisions Closely
Clients, design professionals, and constructors who do not recognize
that geotechnical engineering is far less exact than other engineering
disciplines can develop unrealistic expectations. Unrealistic expectations
can lead to disappointments, claims, and disputes. To help reduce the
risk of such outcomes, geotechnical engineers commonly include a vari-
ety of explanatory provisions in their proposals. Sometimes labeled
"limitations." many of these provisions indicate where geotechnical
engineers' responsibilities begin and end to help others recognize their
own responsibilities and risks, thus to encourage more effective scopes
of service, Read this proposal's provisions closely. Ask questions. Your
geotechnical engineer should respond fully and frankly
Rely on Your ASFE-Member Geotechnical
Engineer for Additional Assistance
Membership in ASFE/The Best People on Earth exposes geotechnical
engineers to a wide array of risk management techniques that can be of
genuine benefit to everyone Involved with a construction project. Confer
with an ASFE member geotechnical engineer for more information.
Confirm a firm's membership in ASFE by contacting ASFE directly or at
its website.
ASFE
The Beal People on lerlll
8811 Colesville Road/Suite G 106, Silver Spring, MD 20910
lelephone 301/565-2733 Facsimile:301/589-2017
e-mail: info(,iJA,)asfe.org wrovwasfe.org
Copyright 2004 by ASFE Inc. Ouplication, reproduction, or copying of this document, in whole or in part, by any means whatsoever, is strictly prohibited, except with ASFE!; specific written
permission. Excerpting, quoting or otherwise extracting wording front this document is permitted only with the express written permission of ASFE, and only for purposes orscholady research
or book review Only members of ASFE may use this document as a complement to or as an element of a geotechnical engineering proposal Any other firm, individual, or other entity that so
uses this document without being an ASFE member could be com Bung negligent or intentional /fraudulent) misrepresentation.
IIGEP06045.0111

S I N C E
C�n FROEHLING & ROBERTSON, INC.
fIK, ENGINEERING • ENVIRONMENTAL • GEOTECHNICAL
1881
AGREEMENT FOR ENGINEERING SERVICES
THIS AGREEMENT, effective as of this
The Hollingsworth Companies
and Froehling & Robertson, Inc.
THE PROJECT is generally described as:
Robeson County NC Southern Adve
5th
("Project") and is located at: Robeson County, North Carolina
day of April
2012 , is by and between
("Client")
("Engineer").
("Project Site").
THIS AGREEMENT consists of the following documents which are incorporated herein by reference:
• GENERAL CONDITIONS FOR ENGINEERING SERVICES; and
• Engineer's SCOPE OF SERVICES AND SCHEDULE OF CHARGES (Exhibit A); and
• Any documents specifically listed below or incorporated by reference in the listed documents.
Engineer agrees to perform the Services set forth in this Agreement and in accordance with its terms, including all attachments
incorporated herein by reference. This Agreement may not be modified or altered, except in writing as specifically described in
this Agreement.
CLIENT:
Signature:
Print Name:
Title:
Company:
Address:
Phone No:
Fax No:
Date:
ENGINEER:
William F. Edelen, Jr., P.E.
Vice President
Froehling & Robertson, Inc.
327 East Jenkins Street
Fayetteville, NC 28306
910-323-9832
910-323-5455
April 5, 2012
FORM NO. 1030 Page I of 8 Rev. 06/10

GENERAL CONDITIONS FOR ENGINEERING SERVICES
I. DEFINITIONS
LL Contract Documents. Plans, specifications, and
agreements between Client and Contractors, including
addenda, amendments, supplementary instructions, and
change orders.
1.2. Contractor. The contractor or contractors
retained to perform work on the Project for which Engineer
is providing Services under this Agreement.
1.3. Day(s). Calendar day(s) unless otherwise stated.
1.4. Hazardous Materials. The term Hazardous
Materials means any toxic substances, chemicals,
radioactivity, pollutants or other materials, in whatever
form or state, known or suspected to impair the
environment in any way whatsoever. Hazardous Materials
include, but are not limited to, those substances defined,
designated or listed in any federal, state or local law,
regulation or ordinance concerning hazardous wastes, toxic
substances or pollution.
1.5. Services. The Services provided by Engineer as
set forth in this Agreement, the SCOPE OF SERVICES and
any written amendment to this Agreement.
1.6. Work. The labor, materials, equipment and
services required to complete the work described in the
Contract Documents.
2. SCOPE OF SERVICES
Engineer will perform the Services set forth in the attached
SCOPE OF SERVICES.
2.1. Changes in Scope. If Engineer provides Client
with a written confirmation of a change in the SCOPE OF
SERVICES, it will become an amendment to this
Agreement unless Client objects in writing within 5
business days after receipt. All Services performed by
Engineer on the Project are subject to the terms and
limitations of this Agreement. If Services are performed,
but the parties do not reach agreement concerning
modifications to the SCOPE OF SERVICES or
compensation, then the terms and limitations of this
Agreement apply to such Services, except for the payment
terms. The parties agree to resolve disputes concerning
modifications to scope or compensation pursuant to Section
19, "Disputes."
1.2. Licenses. Engineer will procure and maintain
business and professional licenses and registrations
necessary to provide its Services.
2.3. Excluded Services. Engineer's Services under
this Agreement include only those Services specified in the
SCOPE OF SERVICES.
2.3.1. General. Client expressly waives any
claim against Engineer resulting from its failure to perform
recommended additional services that Client has not
authorized Engineer to perform, and any claim that
Engineer failed to perform services that Client instructs
Engineer not to perform.
2.3.2. Biological Pollutants. Engineer's
SCOPE OF SERVICES specifically excludes the
investigation, detection, prevention or assessment of the
presence of Biological Pollutants. The term "Biological
Pollutants" includes, but is not limited to, molds, fungi,
spores, bacteria, viruses, and/or any of their byproducts.
Engineer's SCOPE OF SERVICES will not include any
interpretations, recommendations, findings, or conclusions
pertaining to Biological Pollutants. Client agrees that Engi-
neer has no liability for any claims alleging a failure to
investigate, detect, prevent, assess, or make
recommendations for preventing, controlling, or abating
Biological Pollutants. Furthermore, Client agrees to
defend, indemnify, and hold harmless Engineer from all
claims by any third party concerning Biological Pollutants,
except for damages caused by Engineer's sole negligence.
3. PAYMENTS TO ENGINEER
3.1. Basic Services. Engineer will perform all
Services set forth in the attached SCOPE OF SERVICES
AND SCHEDULE OF CHARGES for the amount(s) set
forth therein.
3.2. Additional Services. Any Services performed
under this Agreement, except those Services expressly
identified in the attached SCOPE OF SERVICES, will be
provided on a time and materials basis unless otherwise
specifically agreed to in writing by both parties.
3.3. Estimate of Fees. In the event that the Engineer
provides a written estimate of the costs to perform the
Services, the Engineer will, to the best of its ability,
perform the Services and accomplish the objectives defined
in this Agreement within said written cost estimate. Client
recognizes that changes in scope and schedule, and
unforeseen circumstances can all influence the successful
completion of Services within the estimated cost. The use
of a "not to exceed" limitation is not a guarantee that the
Services will be completed for that amount; rather, it
indicates that Engineer shall not incur fees and expenses in
excess of the limitation amount without obtaining Client's
agreement to do so. Under no circumstances shall a written
cost estimate be deemed to be a "not to exceed" price unless
it is expressly so stated in this Agreement.
3.4. Rates. Clients will pay Engineer at the rates set
forth in the SCHEDULE OF CHARGES.
3.4.1 Changes to Rates. Client and Engineer
agree that the SCHEDULE OF CHARGES is subject to
periodic review and amendment, as appropriate, to reflect
Engineer's then -current fee structure. Engineer will give
Client at least 30 days advance notice of any changes.
Unless Client objects in writing to the proposed amended
fee structure within 30 days of notification, the amended fee
structure will be incorporated into this Agreement and will
then supersede any prior fee structure. If Client
objects to the amended fee structure, and Engineer and
Client can not agree upon a new fee structure within 30
FORM NO. 1030 Page 2 of 8 Rev. 06/10

days after notice, Engineer may terminate this Agreement.
Such termination shall constitute a termination other than
Engineer's material breach of the Agreement and Client
shall compensate the Engineer as set forth under Section
18.3, Termination, within 10 days after Engineer's notice
of termination.
3.5. Payment Timing; Late Charge. All invoices
are due upon receipt. All amounts unpaid 30 days after the
invoice date will include a late payment charge from the
date of the invoice, at the rate of 1-1/2% per month or the
highest rate permitted by law. Attorney's fees and other
costs incurred by Engineer in collecting past due amounts
shall be paid by Client.
4. STANDARD OF PERFORMANCE;
DISCLAIMER OF WARRANTIES
4.1. Level of Service. Engineer offers different levels
of engineering Services to suit the desires and needs of
different clients. Although the possibility of error can never
be eliminated, more detailed and extensive Services yield
more information and reduce the probability of error, but at
increased cost. Client must determine the level of Services
adequate for its purposes. Client has reviewed the SCOPE
OF SERVICES and has determined that it does not need or
want a greater level of Services than that being provided.
4.2. Standard of Care. In providing Services under
this Agreement, the Engineer will endeavor to perform in a
manner consistent with that degree of care and skill
ordinarily exercised by members of the same profession
currently practicing in the same locale as the Project and
under similar circumstances and at the same time the
Services were performed.
4.3. No Warranty. THERE ARE NO EXPRESSED
OR IMPLIED WARRANTIES, INCLUDING THE
IMPLIED WARRANTIES OF MERCHANTABILITY
AND FITNESS FOR A PARTICULAR PURPOSE
NOT SPECIFIED HEREIN, RESPECTING THIS
AGREEMENT OR THE EQUIPMENT,
DOCUMENTATION, REPORTS, DESIGN PLANS,
DRAWINGS, SPECIFICATIONS, OTHER
DOCUMENTS AND SERVICES TO BE PROVIDED
HEREUNDER OR THE DELIVERY, USE OR
PERFORMANCE THEREOF.
5. ESTIMATE OF CONSTRUCTION COSTS
Client acknowledges that construction and Project
development are subject to many influences that are not
subject to precise forecasting and are outside of Engineer's
control. Client further acknowledges that actual costs
incurred may vary substantially from the estimates prepared
by Engineer and that Engineer does not warrant or guaranty
the accuracy of construction or development cost estimates.
6. CONSTRUCTION PHASE SERVICES
When Engineer's SCOPE OF SERVICES includes
observation and/or testing during the course of construction
("Construction Phase Services"), the following clauses will
apply:
6.1. Construction Observation.
6.1.1. Site Meetings & Visits. Engineer will
participate in job site meetings as requested by Client, and,
unless otherwise requested by Client, visit the site at times
specified in the SCOPE OF SERVICES or, if not specified
in the SCOPE OF SERVICES, at intervals as Engineer
deems appropriate to the various stages of construction to
observe the geotechnical conditions encountered by
Contractor and the progress and quality of the geotechnical
and construction materials aspects of the Work. Based on
information obtained during such visits and on such
observations, Engineer may inform Client of the progress of
the geotechnical and construction materials aspects of the
Work. Client understands that Engineer may not be on site
continuously; and, unless expressly agreed otherwise,
Engineer will not observe all of the Work.
6.1.2. Contractor's Performance. Engineer does
not, and cannot, warrant or guarantee that all of the Work
performed by Contractor meets the requirements of
Engineer's geotechnical recommendations or the plans and
specifications for the Work; nor can Engineer be
responsible for Contractor's failure to perform the Work in
accordance with the plans, specifications or the
recommendations of Engineer.
6.1.3, Contractor's Responsibilities. Engineer
will not supervise, direct or have control over the Work nor
will Engineer have authority over the responsibility for the
means, methods, techniques, sequences or procedures of
construction selected by Contractor for the Project; for
safety precautions and programs incident to the Work; nor
for any failure of Contractor to comply with all applicable
laws and regulations applicable to Contractor furnishing
and performing its Work.
6.1.4. Final Report. At the conclusion of
Construction Phase Services, Engineer will provide Client
with a written report summarizing the tests and
observations, if any, made by Engineer.
6.2. Review of Contractor's Submittals. If included
in the SCOPE OF SERVICES, Engineer will review and
take appropriate action on the Contractor's submittals, such
as shop drawings, product data, samples, and other required
submittals. Engineer will review such submittals solely for
general conformance with Engineer's design, and will not
include review for the following, all of which will remain
the responsibility of the Contractor: accuracy or
completeness of details, quantities or dimensions;
construction means, methods, sequences or procedures;
coordination among trades; or construction safety.
6.3. Tests. Tests performed by Engineer on finished
Work or Work in progress are taken intermittently and
indicate the general acceptability of the Work on a
statistical basis. Engineer's tests and observations of the
Work are not a guarantee of the quality of Work and do not
relieve other parties from their responsibility to perform
their Work in accordance with applicable plans,
specifications and requirements.
FORM NO. 1030 Page 3of 8 Rev. 06/10

7. CLIENT'S RESPONSIBILITIES
In addition to payment for the Services performed under
this Agreement, Client agrees to:
7.1. Cooperation. Assist and cooperate with Engineer
in any manner necessary and within its ability to facilitate
Engineer's performance under this Agreement.
7.2. Representative. Designate a representative with
authority to receive all notices and information pertaining to
this Agreement, communicate Client's policies and
decisions, and assist as necessary in matters pertaining to
the Project and this Agreement. Client's representative will
be subject to change by written notice.
7.3. Rights of Entry. Provide access to and/or obtain
permission for Engineer to enter upon all property, whether
or not owned by Client, as required to perform and
complete the Services. Engineer will operate with
reasonable care to minimize damage to the Project Site(s).
However, Client recognizes that Engineer's operations and
the use of investigative equipment may unavoidably alter
conditions or affect the environment at the existing Project
Site(s). The cost of repairing such damage will be borne by
Client and is not included in the SCOPE OF SERVICES
unless otherwise stated.
7.4. Relevant Information. Supply Engineer with all
information and documents in Client's possession or knowl-
edge which are relevant to Engineer's Services.
Client warrants the accuracy of any information supplied by
it to Engineer, and acknowledges that Engineer is entitled to
rely upon such information without verifying its accuracy.
Prior to the commencement of any Services in connection
with a specific property, Client will notify Engineer of any
known potential or possible health or safety hazards
existing on or near the Project Site, with particular
reference to Hazardous Materials or conditions.
7.5. Subsurface Structures. Correctly designate on
plans to be furnished to Engineer, the location of all
subsurface structures, such as pipes, tanks, cables and
utilities within the property lines of the Project Site(s), and
be responsible for any damage inadvertently caused by
Engineer to any such structure or utility not so designated.
Engineer is not liable to Client for any losses, damages or
claims arising from damage to subterranean structures or
utilities that were not correctly shown on plans furnished by
Client to Engineer.
8. CHANGED CONDITIONS
If Engineer discovers conditions or circumstances that it
had not contemplated at the commencement of this
Agreement ("Changed Conditions"), Engineer will notify
Client in writing of the Changed Conditions. Client and
Engineer agree that they will then renegotiate in good faith
the terms and conditions of this Agreement. If Engineer
and Client cannot agree upon amended terms and condi-
tions within 30 days after notice, Engineer may terminate
this Agreement and be compensated as set forth in Section
18.3, "Termination", within 10 days after Engineer's notice
of termination.
9. HAZARDOUS MATERIALS
Client understands that Engineer's Services under this
Agreement are limited to geotechnical and construction
materials engineering and that Engineer has no
responsibility to locate, identify, evaluate, treat or otherwise
consider or deal with Hazardous Materials. Client is solely
responsible for notifying all appropriate federal, state,
municipal or other governmental agencies, including the
potentially affected public, of the existence of any
Hazardous Materials on or in the Project site, or located
during the performance of this Agreement. The existence or
discovery of Hazardous Materials constitutes a Changed
Condition under this Agreement.
10. CERTIFICATIONS
Client agrees not to require that Engineer execute any
certification with regard to Services performed or Work
tested and/or observed under this Agreement unless:
1) Engineer believes that it has performed sufficient
Services to provide a sufficient basis to issue the
certification; 2) Engineer believes that the Services
performed or Work tested and/or observed meet the criteria
of the certification; and 3) Engineer has reviewed and
approved in writing the exact form of such certification
prior to execution of this Agreement. Any. certification
by Engineer is limited to an expression of professional
opinion based upon the Services performed by Engineer,
and does not constitute a warranty or guarantee, either
expressed or implied.
I I. ALLOCATION OF RISK
11.1 Limitation of Liability. In recognition of the
relative risks and benefits of the Project to both the Client
and the Engineer, the risks have been allocated such that
the Client agrees, to the fullest extent permitted by law, to
limit the liability of the Engineer to the Client for any and
all claims, losses, damages of any nature whatsoever or
claims expenses from any cause or causes, including
attorney'.s fees and costs and expert witness fees and costs,
so that the total aggregate liability of the Engineer to the
Client arising out of the Project shall total $50,000, or the
Engineer's total fee for Services on this Project, which-
ever is greater. It is intended that this limitation apply to
any and all liability or causes of action however alleged or
arising, unless otherwise prohibited by law.
I LZ Indemnification.
11.2.1. indemnification. The Engineer agrees,
to the fullest extent permitted by law, to indemnify and hold
harmless the Client, its officers, directors and employees
(collectively, Client) against all damages, liabilities or
costs, including reasonable attorney's fees and defense
costs (no duty to defend), to the extent caused by the Engi-
neer's negligent performance of professional services under
this Agreement and that of its subconsultants or anyone for
whom the Engineer is legally liable.
FORM NO. 1030 Page 4 of 8 Rev. 06/10

The Client agrees, to the fullest extent permitted by law,
to indemnify and hold harmless the Engineer, its officers,
directors, employees and subconsultants (collectively,
Engineer) against all damages, liabilities or costs,
including reasonable attorney's fees and defense costs, to
the extent caused by the Client's negligent acts in
connection with the Project and the acts of its contractors or
consultants or anyone for whom the Client is legally
liable.
11.2.2. Hazardous Materials lndenimlilcation.
Except to the extent caused by Engineer's sole negligence,
Client expressly agrees to defend, indemnify and hold
harmless Engineer, its officers, directors, employees and
subconsultants from and against any and all damages,
liabilities or costs, including reasonable attorney's fees and
defense costs, arising from or related to the existence,
disposal, release, discharge, treatment or transportation of
Hazardous Materials, or the exposure of any person to
Hazardous Materials, or the degradation of the environment
due to the presence, discharge, disposal, release of or
exposure to Hazardous Materials.
11.3. Consequential Damages. Neither Client nor
Engineer, nor their respective officers, directors, partners or
employees, shall be liable to the other or shall make any
claim for any incidental, indirect, special, exemplary,
punitive, or consequential losses or damages arising out of
or connected in any way to the Project or to this Agreement.
This mutual waiver of consequential damages shall include,
but is not limited to, loss of use, loss of business, loss of
income, loss of reputation or any other consequential
damages that either party may have incurred from any cause
of action including negligence, strict liability, breach of
contract and breach of strict, express or implied warranty.
Both the Client and the Engineer shall require similar
waivers of consequential and other damages protecting all
the entities or persons named herein in all contracts and
subcontracts with others involved in this Project.
11.4. Continuing Agreement. The indemnity
obligations and the limitations of liability established under
this Agreement will survive the expiration or termination of
this Agreement. If Engineer provides Services to Client
that the parties do not confirm through execution of an
amendment to this Agreement, the obligation of the parties
to indemnify each other and the limitations on liability
established under this Agreement apply to such Services as
if the parties had executed an amendment.
12. INSURANCE
12.1. Engineer's Insurance. Engineer will obtain, if
reasonably available, the following coverages:
12.1.1. Statutory Workers' Compensation /
Employer's Liability Insurance;
12.1.2. Commercial General Liability Insurance
with a combined single limit of $1,000,000;
12.1.3. Automobile Liability Insurance,
including liability for all owned, hired and non -owned
vehicles with minimum limits of $1,000,000 for bodily
injury per person, $1,000,000 property damage, and
$1,000,000 combined single limit per occurrence; and,
12.1.4. Professional Liability Insurance in
amounts of $1,000,000 per claim and annual aggregate.
12.2 Contractor's Insurance. Client shall require
that all Contractors and subcontractors for the Project name
Engineer as an additional insured under their General
Liability and Automobile Liability insurance policies.
If Client is not the Project owner, Client will require
the Project owner to require the project owner's Contractor
to purchase and maintain General Liability, Builder's
Risk, Automobile Liability, Workers' Compensation, and
Employer's Liability insurance with limits no less than
as set forth above, and to name Engineer and its
subcontractors and subconsultants as additional insureds on
the General Liability Insurance.
11.3. Certificates of Insurance. Upon request,
Engineer and Client will each provide the other with
certificate(s) of insurance evidencing the existence of the
policies required herein. Except for Professional Liability
and Workers' Compensation Insurance, all policies required
herein shall contain a waiver of subrogation.
13. OWNERSHIP AND USE OF DOCUMENTS
13.1. Client Documents. All documents provided by
Client will remain the property of Client. Engineer will
return all such documents to Client upon request, but may
retain file copies of such documents.
13.2. Engineer's Documents. Unless otherwise agreed
in writing, all documents and information prepared by
Engineer or obtained by Engineer from any third party in
connection with the performance of Services, including, but
not limited to, Engineer's reports, boring logs, maps, field
data, field notes, drawings and specifications, laboratory
test data and other similar test documents (collectively
"Documents") are the property of Engineer. Engineer has
the right, in its sole discretion, to dispose of or retain the
Documents.
13.3. Use of Documents. All Documents prepared by
Engineer are solely for use by Client and will not be
provided by either party to any other person or entity
without Engineer's prior written consent.
13.3. /. Use by Client. Client has the right to
reuse the Documents for purposes reasonably connected
with the Project for which the Services are provided,
including without limitation design and licensing
requirements of the Project.
13.3.2. Use by Engineer. Engineer retains the
right of ownership with respect to any patentable concepts
or copyrightable materials arising from its Services and the
right to use the Documents for any purpose.
13.4. Electronic Media. Engineer may agree at
Client's request to provide Documents and information in
an electronic format. Client recognizes that Documents or
other information recorded on or transmitted as electronic
media are subject to undetectable alteration due to (among
other causes) transmission, conversion, media degradation,
FORM NO. 1030 Page 5 of 8 Rev. 06/ 10

software error, or human alteration. Accordingly, all
Documents and information provided by Engineer in
electronic media are for informational purposes only and
not as final documentation. Unless otherwise defined in the
SCOPE OF SERVICES, Engineer's electronic Documents
and media will conform to Engineer's standards. Engineer
will provide any requested electronic Documents for a 30
day acceptance period, and Engineer will correct any
defects reported by Client to Engineer during this period.
Engineer makes no warranties, either express or implied,
regarding the fitness or suitability of any electronic
Documents or media.
13.5. Unauthorized Reuse No party other than Client
may rely, and Client will not represent to any other party
that it may rely on Documents without Engineer's express
prior written consent and receipt of additional
compensation. Client will not permit disclosure, mention,
or communication of, or reference to the Documents in any
offering circular, securities offering, loan application, real
estate sales documentation, or similar promotional material
without Engineer's express prior written consent. Client
waives any and all claims against Engineer resulting in any
way from the unauthorized reuse or alteration of
Documents by itself or anyone obtaining them through
Client. Client will defend, indemnify and hold harmless
Engineer from and against any claim, action or proceeding
brought by any party claiming to rely upon information or
opinions contained in Documents provided to such person
or entity, published, disclosed or referred to without
Engineer's prior written consent.
14. SAMPLES AND CUTTINGS
14.1. Sample Retention. If Engineer provides
laboratory testing or analytic Services, Engineer will
preserve such soil, rock, water, or other samples as it deems
necessary for the Project, but no longer than 45 days after
issuance of any Documents that include the data obtained
from these samples. Client will promptly pay and be
responsible for the removal and lawful disposal of all
contaminated samples, cuttings, Hazardous Materials, and
other hazardous substances.
14.2. Monitoring Wells. Client will take custody of
all monitoring wells and probes installed during any
investigation by Engineer, and will take any and all
necessary steps for the proper maintenance, repair or
closure of such wells or probes at Client's expense.
15. RELATIONSHIP OF THE PARTIES
Engineer will perform Services under this Agreement as an
independent contractor. Nothing contained in this
Agreement, or in the performance of Engineer and Client
hereunder, is intended to benefit nor shall inure to the
benefit of any third party.
16. ASSIGNMENT AND SUBCONTRACTS
Neither party may assign this Agreement, in whole or it
part, without the prior written consent of the other party
except for an assignment of proceeds for financing
purposes. Engineer may subcontract for the services of
others without obtaining Client's consent if Engineer
deems it necessary or desirable for others to perform certain
Services.
17. SUSPENSION AND DELAYS
17. L Procedures. Client may, at any time by 10 days
written notice suspend performance of all or any part of the
Services by Engineer. Engineer may terminate this
Agreement if Client suspends Engineer's Services for more
than 60 days and Client will pay Engineer as set forth under
section 18.3, "Termination." If Client suspends Engineer's
Services, or if Client or others delay Engineer's Services,
Client and Engineer agree to equitably adjust: (1) the time
for completion of the Services; and (2) Engineer's
compensation in accordance with Engineer's then current
SCHEDULE OF CHARGES for the additional labor,
equipment, and other charges associated with maintaining
its workforce for Client's benefit during the delay
or suspension, or charges incurred by Engineer for
demobilization and subsequent remobilization.
17.2. Liability. Engineer is not liable to Client for
any failure to perform or delay in performance due
to circumstances beyond Engineer's control, including but
not limited to pollution, contamination, or release of
hazardous substances, strikes, lockouts, riots, wars, fires,
flood, explosions, "acts of God," adverse weather
conditions, acts of government, labor disputes, delays in
transportation or inability to obtain material and equipment
in the open market.
18. TERMINATION
18.1. Termination for Convenience. Engineer and
Client may terminate this Agreement for convenience upon
30 days written notice delivered or mailed to the other
party.
18.2. Termination for Cause. In the event of a
material breach of this Agreement, the party not breaching
the Agreement may terminate it upon 10 days written notice
delivered or mailed to the other party. The termination
notice shall state the basis for the termination. The
Agreement may not be terminated for cause if the
breaching party cures the breach within the 10-day period.
18.3. Payment on Termination. Following termination
other than for Engineer's material breach of this Agree-
ment, Client will pay Engineer for Services performed prior
to the termination notice date, and for any necessary Ser-
vices and expenses incurred in connection with the termina-
tion of the Project, including but not limited to, the cost of
completing analysis, records and reports necessary to docu-
ment job status at the time of termination and costs associ-
ated with termination of subcontractor contracts in accor-
dance with Engineer's then current SCHEDULE OF
CHARGES.
19. DISPUTES
19.1. Mediation. All disputes between Engineer and
Client are subject to mediation. Either party may demand
FORM NO. 1030 Page 6of 8 Rev. 06/10

mediation by serving a written notice stating the essential
nature of the dispute, amount of time or money claimed,
and requiring that the matter be mediated within 45 days of
service of notice.
19.2. Precondition to Other Action. No action or suit
may be commenced unless the mediation did not occur
within 45 days after service of notice; or the mediation,
occurred but did not resolve the dispute; or a statute of
limitation would elapse if suit was not filed prior to 45 days
after service of notice.
19.3. Choice of Law; Venue. This Agreement will be
construed with and governed by the laws of the
Commonwealth of Virginia.
19.4. Statutes of Limitations. To the fullest extent
permitted by law, no action, regardless of form, arising out
of the Services under this Agreement, may be brought by
either party more than two (2) years after the act or
omission giving rise to a cause of action has occurred,
except that an action for nonpayment against Client may be
brought within two (2) years from the date of the last
payment or the date of Engineer's original invoice for such
service, whichever is later.
20. MISCELLANEOUS
20.1, Integration and Severability. This Agreement
reflects the entire agreement of the parties with respect to
its terms and supersedes all prior agreements, whether
written or oral. If any portion of this Agreement is void or
voidable, such portion will be deemed stricken and the
Agreement reformed to as closely approximate the stricken
portions as the law allows.
10.2. Modification of this Agreement. This
Agreement may not be modified or altered, except by a
written agreement signed by authorized representatives of
both parties and referring specifically to this Agreement.
20.3. Notices. Any and all notices, requests,
instructions or other communications given by either party
to the other must be in writing and either hand delivered to
the recipient or delivered by first-class mail (postage
prepaid) or express mail (billed to sender) at the addresses
given in this Agreement.
20.4. Headings. The headings used in this Agreement
are for convenience only and are not a part of this
Agreement.
20.5. Waiver. The waiver of any term, conditions or
breach of this Agreement will not operate as a subsequent
waiver of the same term, condition, or breach.
20.6. Default. Notwithstanding any other provision
contained in this Agreement, Client agrees to pay Engineer
all reasonable expenditures incurred by Engineer in
enforcing the terms of this Agreement including reasonable
attorney's fees and court costs, if any.
End of General Conditions
FORM NO. 1030 Page 7 of 8 Rev. 06/10

EXHIBIT A: ENGINEER'S SCOPE OF SERVICES
AND SCHEDULE OF CHARGES
Engineer's Proposal or other description of (1) Scope of Services, and (2) Schedule of Charges for the Work covered by this
Agreement is either:
A Listed below; or
❑ Attached in a separate document(s)
Proposal No. 1364-01OG dated April 5, 2012
FORM NO. 1030 Page 8 of 8 Rev. 06/10

Drainage and Detention Calculations
For
NC-PEM-4005
The Hollingsworth Companies
Comtech Industrial Park
,1vt
Robeson County, North Carolina
Prepared by:
Land Development Solutions
310 Simmons Road, Suite K
Knoxville, Tennessee 37922
November 2012
Revised:
CA'U� i
�Q-.4ESS • •�/9ii
CL L r.
030176 �y
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AKSN` \\
LAND
DEVELOPMENT
SOLUTIONS

Robeson County, NC-PEM-4005
November 2012
Table of Contents
Section Description
Introduction
2 Runoff from the First 1.5" of Rainfall
3 Pre— vs. Post -Development Analysis
4 Appendix I - Support Data & Calculations

Robeson County, NC-PEM-4005
November 2012
Introduction
The NC-PEM-4005 project consists of construction of a 130,000+/- sf building and a 35
car parking lot along with related access drives. The entire site drains through various
storm water ditches surrounding the site and eventually into the Lumber River. The total
site acreage is approximately 17.7 acres. The total area disturbed for this project is
8.1+/- acres. The site is located on the northeast quadrant of the intersection of
Comtech Drive and Deep Branch Road in the Comtech Industrial Park. The site is made
up of Lynchburg, Rains and Goldsboro soil types. The soils information is included in
Appendix I.
The following procedure was used to design the basins:
1. Define the existing drainage areas and patterns and calculate the pre -
development runoff for the site.
2. Define the post -developed drainage areas and patterns based on the site plan
and calculate the post -developed runoff for the site. Determine the areas that will
drain directly off -site.
3. Determine a suitable method of treatment and design the drainage facilities
accordingly.
4. Compare the post -development peak discharge with the pre -developed
(allowable) peak discharge and determine detention basins locations.
5. Provide enough storage volume in each basin and design outlet structures that
provide adequate draw down time.
6. Design the emergency spillway to safely discharge the 100 year design storm
peak runoff (in case of outlet structure failure).
Methodology
The Simple Method (taken from the NCDENR Stormwater BMP Manual, Runoff Volume
Section 3.3) was used to calculate the pre -developed and post -developed runoff
volumes. The first volume calculation shown is using the runoff from the first 1.5" of
rainfall. The second volume calculation compares the volume difference between the
pre- and post -developed runoff from the 1-year, 24 hour rainfall event. The greater of
the two is what the BMPs are designed to accommodate.
Basin 1 located in Area 1 (See Drainage Area map in Appendix) will be over detaining to
accommodate a small portion of the driveway and front yard that will drain directly off
site and for Area 3 where no detention basin has been designed.

Robeson County, NC-PEM-4005
November 2012
2 Runoff from the First 1.51' of Rainfall
Rv=0.05+0.9*la
Where: Rv = Runoff coefficient (storm runoff (in)/storm rainfall (in)), unitless
la = Impervious fraction (impervious portion of drainage area (ac)/
drainage area (ac)), unitless
V = 3630 * Rd * Rv * A
Where: V = Volume of runoff that must be controlled for the design storm (U)
Rd = Design storm rainfall depth (in)
A = Watershed area (ac)
Refer to Appendix for drainage area sketches.
Area 1: (Area 1 + Area 3)
Total Area = 16.3 ac
Impervious area = 3.0 ac
Rv = 0.05 + 0.9 * (3.0/16.3)
Rv = 0.22
V = 3630 * 1.5 * 0.22 * 16.3
V = 19,525 U
Area 2:
Total Area = 1.4 ac
Impervious area = 0.47 ac
Rv = 0.05 + 0.9 * (0.47/1.4)
Rv = 0.35
V = 3630 * 1.5 * 0.35 * 1.4
V = 2,670 U

Robeson County, NC-PEM-4005
November 2012
3 Pre- vs. Post -Development Analysis
Rv = 0.05 + 0.9 * la
Where: Rv = Runoff coefficient (storm runoff (in)/storm rainfall (in)), unitless
la = Impervious fraction (impervious portion of drainage area (ac)/
drainage area (ac)), untiless
V = 3630 * 1-year storm * (Rv(post) — Rv(pre)) * A
Where: V = Volume of runoff that must be controlled for the design storm (ft3)
1-year, 24-hour storm = 3.03 (in)
A = Watershed area (ac)
Area 1: (Area 1 + Area 3)
Total Area = 16.3 ac
Impervious area = 3.0 ac
Rv(post) = 0.05 + 0.9 * (3.0/16.3)
Rv(post) = 0.22
Rv(pre) = 0.05 + 0.9 * (0/16.3)
Rv(pre) = 0.05
V=3630*3.03*(0.22-0.05)* 16.3
V = 30,480 ft3
Area 2:
Total Area = 1.4 ac
Impervious area = 0.47 ac
Rv(post) = 0.05 + 0.9 * (0.47/1.4)
Rv(post) = 0.35
Rv(pre) = 0.05 + 0.9 * (0/16.3)
Rv(pre) = 0.05
V = 3630 * 3.03 * (0.35 — 0.05) * 1.4
V = 4,620 ft3

Robeson County, NC-PEM-4005
November 2012
Conclusion
The volume for both areas is greater when using the pre- vs. post -development
comparison. Therefore the BMP in Areal will be designed to accommodate a volume of
30,480 ft3 and Area 2 will accommodate a volume of 4,620 U. See Appendix for
support data and Site Plans for BMP Designs.

Soil Map —Robeson County, North Carolina
34' 38' 44"
34' 36 25'
Map Sale: 1:2,7404 prnteE on Asae (8.5" x 11") sheet b
t Meters
N o zs so 100 150
A Feel
N 0 100 200 400 600
34' 3843"
34' 36' 25"
USDA Natural Resources Web Soil Survey 7/6/2012
Conservation Service National Cooperative Soil Survey Page i of 3

Soil Map -Robeson County, North Carolina
Map Unit Legend
" Robeson County, North Carolina (NCI 55)
.;,Map Unit Symbol
- Map Unit Name °
Acres in AOI
,. Percent of AOI ..
GoA
Goldsboro loamy sand, 0 to 2 percent
slopes
0.8
4.6%
Ly
Lynchburg sandy loam
9.1
51.7%
Ra
Rains sandy loam
7.7
43.7%
Totals for Area of Interest
17.7
100.0%
USDA Natural Resources Web Soil Survey 7/6/2012
® Conservation Service National Cooperative Soil Survey Page 3 of 3

Soil Map —Robeson County, North Carolina
MAP LEGEND
MAP INFORMATION
Area of Interest (AO0
m
Very Stony Spot
Map Scale: 1:2,740 if printed on A size (8.5" x 11") sheet.
r
Area of Interest (AO0
If
Wet Spot
The soil surveys that comprise your AOI were mapped at 1:20,000.
Soils
Other
Warning: Soil Map may not be valid at this scale.
Sod Map Units
Special Line Features
Enlargement of maps beyond the scale of mapping can cause
Special
Point Features
Gully
misunderstanding of the detail of mapping and accuracy of soil line
tV
Blowout
placement. The maps do not show the small areas of contrasting
P p
J
Short Sleep Slope
soils that could have been shown at a more detailed scale.
Borrow Pit
Other
X
Clay Spot
Please rely on the bar scale on each map sheet for accurate map
Political Features
measurements.
Closed Depression
O
Cities
?{,
Gravel Pit
Source of Map: Natural Resources Conservation Service
Water Features
Web Soil Survey URL: http://websoilsuwey.nres.uSda.gov
Gravelly Spot
,.-.:
Streams and Canals
Coordinate System: UTM Zone 17N NAD83
®
Landfill
Transportation
This product is generated from the USDA-NRCS certified data as of
Lava Flow
Rails
the version date(s) listed below.
L,
Marsh or swamp
N
Interstate Highways
Soil Survey Area: Robeson County, North Carolina
,
US Routes
Survey Area Data: Version 9, Feb 20, 2007
Mine or Quarry
Major Roads
Date(s) aerial images were photographed: 6118/2006
Miscellaneous Water
a;a
Loral Roads
The orthophoto or other base map on which the soil lines were
p
Perennial Water
u
compiled and digitized probably differs from the background
imagery displayed on these maps. As a result, some minor shifting
Rock Outcrop
of map unit boundaries may be evident.
}
Saline Spot
Sandy Spot
a
Severely Eroded Spot
p
Sinkhole
Slide or Slip
}{
Sodic Spot
Spoil Area
Q
Stony Spot
USDA Natural Resources Web Soil Survey 7/6/2012
Conservation Service National Cooperative Soil Survey Page 2 of 3

M
f1j` CAROLINA COMMERCE AND TECHNOLOGY CENTER
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310 SIMMONS RD.. SUITE K -KNOXVILLE, TENNESSEE 37922
NC-PEM-4005
Pre Developed Site
Pembroke, North Carolina Date:

CAROLIhA COMMERCE AND TECHNOLOGY CENTER
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SOL U TIONS
310 SIMMONS RD., SUITE K -KNOXVILLE, TENNESSEE 37922
PH: 865-671-2281
NC-PEM4005
Checked
Checked
Ap roved
Post Developed Drainage Areas
Job No.
cale
Pembroke, North Carolina
N.T.S.

Stage
-Storage Curve
60000.00
50000.00
40000.00
-
Provided
= 37,775
ft3
30000.00
Required=30,480
ft3
>E
020000.00
--
--
-
crIOv1
10000.00
0.00
I
155.50
156.00
156.50
157.00 157.50
158.00 158.50
Stage - ft
319
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� LAND NC-PEM-4005 Checked
DEAELOPMENT proved
Basin 1Stagc-Storage Job No.
SOL U I -IONS c e: Sheet r
N.T.S. ^
1S RD., SUITE K-KNOXVILLE, TENNESSEE 37922 Pembroke, North Carolina Dale: 3
PH: 868-671-2281 11-7-12

#units=elevation,ft,volume,ft3
#stage -Storage Curve Data
#Stage - ft volume - ft3
#----------- -----------
158.50000000, 60714.36544694
157.00000000, 26318.65954164
156.00000000, 6916.69895178
155.50000000, 0.00000000
tmp#14.ssc
Page 1

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#Units=Elevation,ft,volume,ft3
#Stage -storage curve Data
#stage - ft volume - ft3
#------------ -------------
158.50000000, 13838.83938252
158.00000000, 8823.62989335
157.00000000, 1998.74146843
1S6.50000000, 375.00867284
156.10000000, 0.00000000
tmp#15.ssc
Page 1