SW8050409_HISTORICAL FILE_20050421

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SW8
DOC TYPE
❑ CURRENT PERMIT
❑ APPROVED PLANS
C HISTORICAL FILE
❑ COMPLIANCE EVALUATION INSPECTION
DOC DATE
2 00 5 04 2-1
YYYYMMDD

OF WATF9 Michael F. Easley, Governor
�U G William G. Ross, Jr., Secretary
North Carolina Department of Environment and Natural Resources
O Alan W. Klimek, P.E. Director
Division of Water Quality
April 21, 2005
PPD, GP, LLC, General Partner
PPD Development, LP, Sole Manager
River Ventures, LLC
Fred Davenport, Vice President
3151 S. 17` Street
Wilmington, NC 28412
Subject: Stormwater Permit No. SW8 050409
PPD Corporate Headquarters Phase I
High Density Project
New Hanover County
Dear Mr. Davenport:
The Wilmington Regional Office received a complete Stormwater Management Permit Application for
PPD Corporate Headquarters Phase 1 on April 20, 2005. 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 050409 dated April 21, 2005, for the
construction of the subject project.
This permit shall be effective from the date of issuance until April 21, 2015, and shall be subject to the
conditions and limitations as specified therein. Please pay special attention to the Operation and
Maintenance requirements in this permit. Failure to establish an adequate system for operation and
maintenance of the stormwater management system will result in future compliance problems.
If any parts, requirements, or limitations contained in this permit are unacceptable, you have the right to
request an adjudicatory hearing upon written request within sixty (60) days following receipt of this
permit. This request must be in the form of a written petition, conforming to Chapter 150E of the North
Carolina General Statutes, and filed with the Office of Administrative Hearings, 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 [phone].
Sincer ly, '
Z'aas
Edward Beck
Acting Regional Supervisor
Surface Water Protection Section
ENB/arl: S:\WQS\STORMWAT\PERMIT\050409.apr05
cc: John Tunstall, P.E., Norris, Kuske & Tunstall
Tony Roberts, New Hanover County Building Inspections
City of Wilmington Stormwater Services
Beth E. Wetherill, New Hanover County Engineering
Division of Coastal Management
LindaLewis
Wilmington Regional Office
Central Files
North Carolina Division of Water Quality 127 Cardinal Drive Extension Phone [phone] Customer Servicel-877-623-6748
Wilmington Regional Office Wilmington, NC 28405-3845 FAX [phone] Internet h2oenrstate nc.us NoithCaro/l/ina
An Equal Opportunity/Affirmative Action Employer -50%Recycled110% Post Consumer Paper Naturally

State Stormwater Management Systems
Permit No. SW8 050409
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
STATE STORMWATER MANAGEMENT PERMIT
HIGH DENSITY DEVELOPMENT
In accordance with the provisions of Article 21 of Chapter 143, General Statutes of
North Carolina as amended, and other applicable Laws, Rules, and Regulations
PERMISSION IS HEREBY GRANTED TO
PPD GP, LLC; PPD Development, LP; Fred Davenport, River Ventures, LLC
PPD Corporate Headquarters Phase 1
929 N. Front Street, Wilmington, New Hanover County
FOR THE
construction, operation and maintenance of an underground infiltration chamber/trench
system in compliance with the provisions of 15A NCAC 2H .1000 (hereafter referred to
as the "stormwater rules') and the approved stormwater management plans and
specifications and other supporting data as attached and on file with and approved by
the Division of Water Quality and considered a part of this permit.
This permit shall be effective from the date of issuance until April 21, 2015, 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 in Section 1.6 on page 3 of this permit. The stormwater
control has been designed to handle the runoff from 106,722 square feet of
impervious area.
3. The tract will be limited to the amount of built -upon area indicated on page 3 of
this permit, and per the approved plans.
4. All stormwater collection and treatment systems must be located in either
dedicated common areas or recorded easements. The final plats for the project
will be recorded showing all such required easements, in accordance with the
approved plans.
5. The runoff from all built -upon area within the permitted drainage area of this
project must be directed into the permitted stormwater control system.
Page 2 of 7

State Stormwater Management Systems
Permit No. SW8 050409
6. The
following design criteria have been provided
in the Cultec Infiltration
chamber/trench system and must be maintained
at design condition:
a.
Drainage Area, acres:
2.70
Onsite, ftz:
117,612
Offsite, ftz:
0
b.
Total Impervious Surfaces, ftz:
106,722
C.
Design Storm, inches:
1
d.
Infiltration Chamber:
Cultec Recharger 330HD
e.
Cultec Chamber Layup Length, ft.:
6.25
f.
Volume per linear foot of chamber, ft3:
3.4
g.
Number of Cultec Chambers:
220
h.
Permitted Storage Volume, ft3:
9,158
i.
Trench Bottom Surface Area, ftz:
8,360
j.
Bottom Elevation, FMSL:
21
k.
Bypass Weir Elevation, FMSL:
22.9
I.
Type of Soil:
Sand
M.
Expected Infiltration Rate, in/hr:
7
n.
Seasonal High Water Table, FMSL:
17.0
o.
Time to Draw Down, hours:
<24
P.
Receiving Stream/River Basin:
NE Cape Fear River / Cape Fear
q.
Stream Index Number:
CPF17 18-74-61
r.
Classification of Water Body:
"SC Sw"
II. SCHEDULE OF COMPLIANCE
1. The stormwater management system shall be constructed in its entirety,
vegetated and operational for its intended use prior to the construction of any
built -upon surface.
2. During construction, erosion shall be kept to a minimum and any eroded areas of
the system will be repaired immediately.
3. The facilities shall be constructed as shown on the approved plans. 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.
4. If the stormwater system was used as an Erosion Control device, it must be
restored to design condition prior to operation as a stormwater treatment device,
and prior to occupancy of the facility.
Page 3 of 7

State Stormwater Management Systems
Permit No. SW8 050409
5. 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. A
modification may be required for those deviations.
6. 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
its entirety and maintenance must occur at the scheduled intervals including, but
not limited to:
a. Semiannual scheduled inspections (every 6 months).
b. Sediment removal.
C. Mowing and revegetation of slopes and the vegetated filter.
d. Immediate repair of eroded areas.
e. Maintenance of all slopes in accordance with approved plans and
specifications.
f. Debris removal and unclogging of bypass structure, filter media, flow
spreader, catch basins, piping and vegetated filter.
g. A clear access path to the bypass structure must be available at all times.
7. 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.
8. Access to the stormwater facilities shall be maintained via appropriate
easements at all times.
9. The permittee shall submit to the Director and shall have received approval for
revised plans, specifications, and calculations prior to construction, for any
modification to the approved plans, including, but not limited to, those listed
below:
a. Any revision to any item shown on the approved plans, including the
stormwater management measures, built -upon area, details, etc.
b. Project name change.
C. Transfer of ownership.
d. Redesign or addition to the approved amount of built -upon area or to the
drainage area.
e. Further subdivision, acquisition, lease or sale of all or part of the project
area. The project area is defined as all property owned by the permittee,
for which Sedimentation and Erosion Control Plan approval or a CAMA
Major permit was sought.
f. Filling in, altering, or piping of any vegetative conveyance shown on the
approved plan.
10. The permittee shall submit final site layout and grading plans for any permitted
future areas shown on the approved plans, prior to construction.
11. 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.
Page 4 of 7

State Stormwater Management Systems
Permit No. SW8 050409
12. 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.
III. GENERAL CONDITIONS
This permit is not transferable except after notice to and approval by the Director.
In the event of a change of ownership, or a name change, the permittee must
submit a formal permit transfer request to the Division of Water Quality,
accompanied by a completed name/ownership change form, 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. The permittee is responsible for compliance with all permit
conditions until such time as the Division approves the transfer request.
Failure to abide by the conditions and limitations contained in this permit may
subject the Permittee to enforcement action by the Division of Water Quality, in
accordance with North Carolina General Statute 143-215.6A to 143-215.6C.
3. The issuance of this permit does not preclude the Permittee from complying with
any and all statutes, rules, regulations, or ordinances, which may be imposed by
other government agencies (local, state, and federal) having jurisdiction.
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 permittee grants DENR Staff permission to enter the property during normal
business hours for the purpose of inspecting all components of the permitted
stormwater management facility.
6. 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.
7. Unless specified elsewhere, permanent seeding requirements for the stormwater
control must follow the guidelines established in the North Carolina Erosion and
Sediment Control Planning and Design Manual.
8. Approved plans and specifications for this project are incorporated by reference
and are enforceable parts of the permit.
9. The permittee shall notify the Division any name, ownership or mailing address
changes within 30 days.
Permit issued this the 21st day of April 2005.
NORTJJ CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
Alan W. Klimek, P.E., Director
Division of Water Quality
By Authority of the Environmental Management Commission
Page 5 of 7

NKT #04268
Mac. 4-zo-05
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
This form may be photocopied for use as an original
I. GENERAL INFORMATION
1. Applicants name (specify the name of the corporation, individual, etc. who owns the project):
River Ventures, LLC
2. Print Owner/Signing Official's name and title (person legally responsible for facility and compliance):
Fred B. Davenoort. Jr.. Vice President
3. Mailing Address for person listed in item 2 above:
3151 South 17s' Street
City: Wilmington State: NC Zip: 28412
Telephone Number: [phone]
4. Project Name (subdivision, facility, or establishment name — should be consistent with project name on
plans, specifications, letters, operation and maintenance agreements, etc.):
PPD Coroorate Headauarters
5. Location of Project (street address):
929 N. Front Street
City: Wilmington County: New Hanover
6. Directions to project (from nearest major intersection):
Intersection of Hwy 421 and Third Street (SR 1627 S) turn onto Hanover Street go .2 mi, right
onto Nutt Street then you are at Hanover Street
7. Latitude: 340 14' 44" N Longitude: 770 56' 58" W of project
8. Contact person who can answer questions about the project:
Name: John S. Tunstall Telephone Number: [phone]
11. PERMIT INFORMATION
Specify whether project is (check one):
X New
Form SWU-101 Version 3.99 Page 1 of 4
Renewal Modification

NKT #04268
• •►
• . NU ! n 1
Mod. 4-ZG-o5
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
This form may be photocopied for use as an original
1. GENERAL INFORMATION
1. Applicants name (specify the name of the corporation, individual, etc. who owns the project):
River Ventures, LLC
2. Print Owner/Signing Official's name and title (person legally responsible for facility and compliance):
Fred B. DavenDort. Jr.. Vice President
3. Mailing Address for person listed in item 2 above:
3151 South 17rh Street
City: V
Telephone
251-0081
State: NC
Zip: 28412
4. Project Name (subdivision, facility, or establishment name — should be consistent with project name on
plans, specifications, letters, operation and maintenance agreements, etc.):
PPD Corporate Headquarters
5. Location of Project (street address):
929 N. Front Street
City: Wilmington County: New Hanover
6. Directions to project (from nearest major intersection):
Intersection of Hwy 421 and Third Street (SR 1627 S) turn onto Hanover Street go .2 mi, right
onto Nutt Street, then you are at Hanover Street
7. Latitude: 340 14' 44" N Longitude: 770 56' 58" W of project
8. Contact person who can answer questions about the project:
Name: John S. Tunstall Telephone Number: [phone]
IL PERMIT INFORMATION
Specify whether project is (check one):
X New
Form SWU-101 Version 3.99 Page 1 of 4
Renewal Modification

2.
If this application is being submitted as the result of a renewal or modification to an existing permit, list the
Existing permit number N/A And its issue date (if known)
Specify the type of project (check one):
Low Density High Density X Redevelop General Permit Other
4. Additional Project Requirements (check applicable blanks):
CAMA Major X Sedimentation/Erosion Control _ 404/401 Permit _ NPDES Stormwater
Information on required state permits can be obtained by contacting the Customer Service Center at
1-877-623-6748.
III. PROJECT INFORMATION
In the space provided below, summarize how stormwater will be treated. Also attach a detailed narrative
(one to two pages) describing stormwater management for the project.
Due to existina impervious area is (88% impervious area existino)
This development is considered a re -development project. Phase I Development. Stormwater
will be directed to subsurface infiltration system.
2. Stormwater runoff from this project drains to the
3. Total Project Area: 7.48 AC
5. How many drainage areas does the project have?
Cape Fear River Basin.
4. Project Built Upon Area: 35.62 %
6. Complete the following information for each drainage area. If there are more than two drainage areas in the
project, attach an additional sheet with the information for each area provided in the same format as below.
Phase I East Infiltration Basin
Basin Information
Drainage Area I
Drainage Area 2
Receiving Stream Name
Cape Fear River
Receiving Stream Class
SC
Drainage Area
2.70 AC = 117,612 SF
Existing Impervious * Area Existing Site
285,184 SF
Proposed Impervious* Area PH I
106,722 SF
% Impervious* Area (total)
3a4wo S10,77o N;An 04
Impervious* Surface Area
Drainage Area I
Drainage Area 2
On -site Buildings
62,351 SF
On -site Streets
On -site Parking
18,604 SF
On -site Sidewalks
8,083 SF
Other on -site Plaza
17,684SF
Off -site
Total: 106,722 SF
Total:
* Impervious area is defined as the built upon area including, but not limited to, buildings, roads, parking areas
sidewalks, gravel areas, etc.
Form SWU-101 Version 3.99 Page 2 of 4

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T How was the off -site impervious area listed above derived? N/A
IV. DEED RESTRICTIONS AND PROTECTIVE COVENANTS
The following italicized deed restrictions and protective covenants are required to be recorded for all
subdivisions, outparcels and future development prior to the sale of any lot. If lot sizes vary significantly, a
table listing each lot number, size and the allowable built -upon area for each lot must be provided as an
attachment.
1. The following covenants are intended to ensure ongoing compliance with state stormwater management permit
number as issued by the Division of Water Quality. These covenants may
not be changed or deleted without the consent ofthe State.
2. No more than square feet ofany lot shall be covered by structures or impervious materials.
Impervious materials include asphalt, gravel, concrete, brick, stone, slate or similar material but do not include
wood decking or the water surface of swimming pools.
3. Swa/es shall not be filled in, piped, or altered except as necessary to provide driveway crossings.
4. Built -upon area in excess of the permitted amount requires a state stormwater management permit modification
prior to construction.
5. Allpermitted runoff from outparcels or future development shall be directed into the permitted stormwater control
system. These connections to the stormwater control system shall be performed in a manner that maintains the
integrity and performance of the system as permitted.
By your signature below, you certify that the recorded deed restrictions and protective covenants for this project
shall include all the applicable items required above, that the covenants will be binding on all parties and persons
claiming under them, that they will run with the land, that the required covenants cannot be changed or deleted
without concurrence from the State, and that they will be recorded prior to the sale of any lot.
V. SUPPLEMENT FORMS
The applicable state stormwater management permit supplement form(s) listed below must be submitted for
each BMP specified for this project. Contact the Stormwater and General Permits Unit at [phone] for
the status and availability of these forms.
Form SWU-102
Wet Detention Basin Supplement
Form SWU-103
Infiltration Basin Supplement
Form SWU-104
Low Density Supplement
Form SWU-105
Curb Outlet System Supplement
Form SWU-106
Off -Site System Supplement
Form SWU-107
Underground Infiltration Trench Supplement
Form SWU-108
Neuse River Basin Supplement
Form SWU-109
Innovative Best Management Practice Supplement
Form SWU-101 Version 3.99 Page 3 of 4

-VI. SUBMITTAL REQUIREMENTS
Only complete application packages will be accepted and reviewed by the Division of Water Quality (DWQ).
A complete package includes all of the items listed below. The complete application package should be
submitted to the appropriate DWQ Regional Office.
Please indicate that you have provided the following required information by initialing in the space provided
next to each item.
Original and one copy of the Stormwater Management Permit Application Form
One copy of the applicable supplement form(s) for each BMP
• Permit application processing fee of §�W (payable to NCDENR) FpSj'(P-At*
Detailed narrative description of stormwater treatment / management
Two copies of plans and specifications, including:
- Development / Project name
- Engineer and firm
- Legend
- North arrow
- Scale
- Revision number & date
- Mean high water line
- Dimensioned property / project boundary
- Location map with named streets or NCSR numbers
- Original contours, proposed contours, spot elevations, finished floor elevations
- Wetlands delineated, or a note on plans that none exist
- Existing drainage (including off -site), drainage easements, pipe sizes, runoff calculations
- Drainage areas delineated
- Vegetated buffers (where required)
VII. AGENT AUTHORIZATION
If you wish to designate authority to another individual or firm so that they may provide information on your
behalf, please complete this section.
John S. Tunstall
Designated agent (individual or firm): Norris, Kuske & Tunstall Consulting Engineers, Inc.
Mailing Address: 902 Market
City: Wilmington State: NC
Phone: [phone]
VIH. APPLICANT'S CERTIFICATION
Fax: [phone]
Zip: 28401
I, (print or type name ofperson listed in General Information, item 2) Fred B. Davenport, Jr.
Certify that the information included on this permit application form is, to the best of my knowledge, correct and
that the project will be constructed in conformance with the apgoved plans, that the required deed restrictions and
protective covenants will be recorded,�nd that the proposed oject complies with the requirements of 15A NCAC
2H.1000. 1/1 //_ //
Signature:
Form SWU-101 Version 3.99 Page 4 of 4
Date: 2.7-o S

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04/21/2005 THU 10:57 FAX [phone] Norris, Kuske, Tunstall
@001/005
NORRIS, KUSKE & TUNSTALL J. Phillip Norris, P-E- John A. Kuske, III, P.E-
John S. Tunstall, P.E. J.A. Kuske, P.E-
CONSULTING ENGINEERS, INC. James T. Pyrtle, P.E. C. Lawrence Sneeden, Jr., P.E.
902 Market Sheet a Wilmington, NC 28401-4733 a Phone [phone]M a Fax [phone]
www.andrewandkuske-corn a [e-mail]
LETTER OF TRANSMITTAL 350-ao0
To: Ms. Linda Lewis
Date: April 21, 2005
.rob No.04268
NC DENR
Subject
PPD Corporate Headquarters
Wilmington, NC
We ARE SENDING You VIA
❑ ATTACHED El UNDER SEPARATE COVER
❑ SHOP DRAWINGS ❑PRINTS ❑ TRACINGS
❑ SPECIFICATIONS ❑ DISKS ❑ COPY OF LETTER
❑
,-FAXy'TRAT1$MITTfAL;; ;:NUMS.ER,%OF,,,PAGES,
:w..::.,;,;t;..,.,,,,.,:r:!":.;F;.^;.;:`^+;•;:7:0'.":.7.:. :. „-,.:' %
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-Call 8�0-043 �6$3' K yoU ha`ve,:'ariy; ;diffictihq
reoei'v`irigtfjis`.'mes§age:`• �'.;'' :,i•,. " .�
COPIES
DATE
NO.
DESCRIPTION
1
04-21-05
Revised Volume Calculation
2
❑ AS REQUESTED
❑ FOR YOUR USE
❑ FOR REVIEW AND COMMENT ❑ FOR APPROVAL
❑ FOR BIDS DUE ❑ YOUR PRINTS LOANED TO US
REMARKS: Revised Volume Calculation: I used 1.9' in determin(ng the approximate chamber volume
Of 3.4 fe/ft but by mistake used 2 ft in trench calculation. Please find revised volume calculation
using 1.9 ft in trench calculation which results in approximate volume of 9,158 fe.
The computer calculation volume is more accurate and is what should be used on supplement
form.
LO
SIGNED John S. Tunstall, P.E., f1mc
CONFIDENTIAL AND PRIVILEGED: Information contained In this document Is privileged and confidential, Intended for the sole use of the
addressee. If you are not the addresses or the person responsible for delivering it to the addressee you ale hereby noted that any dissemination.
distribution or copying of this document Is strictly prohibited. If you have received this document in error please immediately notify the sender and
return to the address above.

04/21/2005 THU 10:57 FAX [phone] Norris, Kuske, Tunstall
4002/005
Date
Design
NORR15, RusKe &TUNSTALL 902 Market,St.
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CONSULTING 6NGINBG'RS, INC. Wilmington, N.C. 28401-4733
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04/21/2005 THU 10:58 FAX [phone] Norris, Kuske, Tunstall Z003/005
04268 PPD East Infiltration Type!!( 24-hr Rainfall=7.00"
Prepared by Andrew & Kuske Consulting Engineers, Inc
HydmCAD® 7.03 On 000479 ® 2005 HydroCAD Software Soludwe LLC 4/1 PAS
Stage -Area -Storage for Pond 212: East Infiltration System
EleMon
Surface
Storage
(feet)
(90•10
(oubiofeefl
21.00
8,360
0
21.10
8,360
334
2120
8,360
669
21.30
8,360
1,003
21AO
8,360
1,338
21.50
8,360
1,672
21.60
8,360
2,008
21.70
8,360
2,341
21.80
8,360
2,676
21.90
8,360
3,010
22.00
8,360
3,344
22.10
8.360
4.008
22.20
8,360
4,664
22.30
8,360
5.319
22.40
8,360
5,974
22.60
8,360
6,627
22.eO
8,300
7,277
22.70
8,360
7,919
22.80
8,360
6556
23.00
8,360
9,823
23.10
5,360
10,453
2320
8,360
11,080
23.30
8,360
11.699
23,40
8,360
12,300
23.50
8,360
12,902
23.60
8,360
13,487
23.70
8,360
14,059
23.80
8.360
14,618
23.90
8,360
15,161
24.00
8,300
16,686
24,10
8,360
16,188
24.20
8,360
16,663
24.30
8,360
17,100
24AO
8,360
17.496
24.50
8,360
17,851
24.60
6
18,018
24.70
6
18,019
24.80
6
18,019
24.90
6
18,019
25.00
6
18,019
25.10
6
18,020
25.20
6
18,020
25.30
6
18,020
26.40
6
18,020
25.60
6
18,021
25.60
6
18,021
26.70
6
18,021
25.80
6
18,021
26.90
6
18,022
26.00
6
i s,=
26.10
6
i s,=
28.20
6
18,022
2610
6
18,022
Elevatlon
Surface
Storage
ffeetl_
MOM
(o"o-fee0
26.40
6
18,023
26.60
6
16,023
26.60
6
18,023
26.70
6
18,023
26.80
6
18,024
26.90
6
18,024
27.00
6
13,024

04/21/2005 THU 10.58 FAX [phone] Norris, Kuske, Tunstall
p4/005
Date Design Sheet
NORRIB, KUSKE&TUNSTALL 902 Market St,
' aON;."ING ENGINEERS. INC. Wilmington, N.C. 2WI-4733 Of
Check Job Z ESL Fo �� Job No.
GUAR fnt� �Ja T" c94Z3
�� An'AG+•►€ram h* l�pts�vr �
�J./, ZZ•q `=��.1�'t V(sta,l�bl4i� �' �I Ia1�Fi'z'
C-rzorv(3/7
� ` ��Tpt� �te�w G�►�G G� Arhl�r�
ZZp 04 i Y� Gu m � @ �, 2� � t-r — ��1I5 c.F
V-
VAe%/•
1- lSgSx5,4+e
`(F►,�/, 22.� 9 � ��. `b�'�f�tl'T�!'L�f�Ni�.li���.�i4

• 1 2 3 4-
Storage Gradient For
RECHARGER 330
0.96 CF/LF 30
1.17 CF/LF 24
1.50 CF/LF 18
/T2•q " f-�.Ev, 2tp
U� 3flO�
3.77 CF/LF
Total = 7.40+ CF/LF
N.T.S.
, Q2.0
C-" CULTEC, INC.
878 FEDERAL RnAO
BROOKFIELD. CT 304
N.
■]
0 1 V Z V d it 4

:�4-19-05; 9:34AM;PPD LEGAL ;910 772 6951 9 ii 2
PPAU
CONFIDENTIAL FACSIMILE
3151 South Seventeenth Street
Wilmington, NC 28412
Tel: [phone]
Fax: [phone]
Date: 4/ 19/05
To: Jera
Location: Norris, Kuske & Tunstall
Fax: [phone]
RECEIVED
APR 2 0 2005
PROJ # )6OeOso4o9
s ( p
From: Judd Hartman, General Counsel
Lisa C. Noecker, Assistant General Counsel
Chuck Munn, Assistant General Counsel
X Donna Crawford, Executive Assistant
Pages: (Including Cover Sheet)
Re: eJo+
CONFIDENTIALITY NOTICE: This facsimile is intended only for the person or entity to which it is addressed and may
contain information that is privileged, confidential or otherwise protected from disclosure. Dissemination, distribution or
copying of this facsimile or the information herein by anyone other than the intended recipient is prohibited. If you have
received this facsimile in error, please notify us immediately by telephone and return the facsimile by mail.
fdU\\DCfaxfotm

<i4-,9-05; 9:34A1d;PPD LEGAL ;910 772 695, tt 2/ 2
CERTIFICATE
The undersigned, being the sole Manager of River Ventures, LLC, a North
Carolina limited liability company, hereby certifies as follows:
1. That the Operating Agreement of River Ventures, LLC authorizes the sole
Manager to elect officers who have authority to act on behalf of River Ventures, LLC;
and
2. That Fred B. Davenport, Jr. is the duly elected and incumbent Vice
President of River Ventures, LLC and is authorized to sign the Stormwater Permit on
behalf of River Ventures, LLC.
2005.
IN WITNESS WHEREOF, this Certificate was signed this 19a' day of April,
PPD DEVELOPMENT, LP
Sole Manager of River Ventures, LLC
By: PPD GP, LLC
General Partner of PPD Development, LP
By:
Name: B. udd Hartman
Title: General Counsel and Secretary
RECEIVED
APR 2 0 2005
DWQ
PROJ # Sb J $U 50

NORRIS, KUSKE &TUNSTALL
CONSULTING ENGINEERS, INC.
April 20, 2005
Ms. Linda Lewis, Environmental Engineer
NC DENR Division of Water Quality
127 Cardinal Drive Extension
Wilmington, NC 28405-3845
Re: Additional Information - Stormwater Project No. SW8 050409
PPD Corporate Headquarters
New Hanover County - Wilmington, NC
NKT Project No. 04268
Dear Ms. Lewis:
J. Phillip Norris, P.E.
John A. Kuske, III, P.E.
John S. Tunstall, P.E.
J.A. Kuske, P.E. of Counsel
Please find attached the requested information on the referenced project. Per our
meeting on April 19, 2005, the infiltration system as designed meets the Stormwater
regulations. In response to your comments please find the following information:
1. Please find a computer generated volume and a calculation of
first one in volume. The future chamber length is 7.5 ft and the
lay up length is 6.25 ft. Use lay up length for calculating volume.
2. Please find a layout plan attached to this package.
3. Please find a dimensioned layout plan of infiltration system
detailing chambers and system.
4. Please find the highlighted drainage area plan.
5, 6, 7 and 8. Per our meeting the design of the system as we originally
submitted is designed to meet the NCDENR Stormwater
regulations.
9. Please find a verification letter that states that Mr. Davenport is
the Vice President of River Ventures, LLC and is authorized to
sign the Stormwater permit.
If you have any questions or comments please call us. Thank you.
Sincerely,
NORRIS, KUSKE, & TUNSTALL
CONNS"SUL'TING ENGINEERS, INC.
.JC
fi > ' i�
Jo n S. Tunstall, P. E.
JSTlmc Stormwater 04-20-05 llr additional info
Enclosures
REC:ElVED
APR 2 0 2005
BY:
902 Market Street • Wilmington, NC 28401-4733 • Phone: [phone] • Fax: [phone]

0
G
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w
s
0

Date'
Design
NORRIS, KUSKE&TUNSTALL 902Market.St.
Sheet
CONSULTING ENGINEERS, INC. Wilmington, N.C. 28401-4733
Of
Check
Job
Forte �r
Job No.
11 11ac a 1$Ceej s 1?4% 'T'j. :y .�.KI�aT�> � �1 �. I`Ls o�Cy�OUrj-
``,. 0% CA �J iG�/�tfl/lJ✓l /G� L++rLr%/L�'YIW�7�,�'/Zi �/% 13
•':cNGINEN,(,'�°a litlI7� j/"��L(N�
o
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814861110, \4
-L/���yG✓/dGe� �/LFiid Tot�xJJL�?GUOU {-COIL
45,-9-�77 ��LLT/2ap?TO>I/�T7yt:- -
2.70��
ciz-T2.aTo>L TAT ,5.l�&
sc4/L77zA7)0h1 ` A,9`J7E5F,,5R�>V 72!2 ./e /'����,.
�T`T�M OF �'�PO���Sn7��Tf2,a %/oil ��+'� _-ZI ,•D
r
c, i�T f/r 25�4(X, 22, �IjP
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Of
qo = 4, 334
0
3�Fr Z O/C,/

C I � VbL4tA�E CALL AL4.��
04268 PPD East Infiltration
Prepared by Andrew & Kuske
Inc
Type ill 24-hr Rainfall=7.00"
Stage -Area -Storage for Pond 2P: East Infiltration System
Elevation
Surface
Storage
(feet)
(sq-ft)
(cubic -feet)
21.00
8,360
0
21.10
8,360
334
21.20
8,360
669
21.30
8,360
1,003
21.40
8,360
1,338
21.50
8,360
1,672
21.60
8,360
2,006
21.70
8,360
2,341
21.80
8,360
2,675
21.90
8,360
3,010
22.00
8,360
3,344
22.10
8,360
4,006
22.20
8,360
4,664
22.30
8,360
5,319
22.40
8,360
5,974
22.50
8,360
6,627
22.60
8,360
7,277
22.70
8,360
7,919
22.80
8,360
8-5
2 TIN
23.00
8,360
-
9,823
23.10
8,360
10,453
23.20
8,360
11,080
23.30
8,360
11,699
23.40
8,360
12,306
23.50
8,360
12,902
23.60
8,360
13,487
23.70
8,360
14,059
23.80
8,360
14,618
23.90
8,360
15,161
24.00
8,360
15,686
24.10
8,360
16,188
24.20
8,360
16,663
24.30
8,360
17,100
24.40
8,360
17,495
24.50
8,360
17,851
24.60
6
18,018
24.70
6
18,019
24.80
6
18,019
24.90
6
18,019
25.00
6
18,019
25.10
6
18,020
25.20
6
18,020
25.30
6
18,020
25.40
6
18,020
25.50
6
18,021
25.60
6
18,021
25.70
6
18,021
25.80
6
18,021
25.90
6
18,022
26.00
6
18,022
26.10
6
18,022
26.20
6
18,022
26.30
6
18,022
Elevation
Surface
Storage
(feet)
(sq-ft)
(cubic -feet)
26.40
6
18,023
26.50
6
18,023
26.60
6
18,023
26.70
6
18,023
26.80
6
18,024
26.90
6
18,024
27.00
6
18,024

Date I Design I NORRIS, KUSKE &TUNSTALLL 902 Market St. I Sheet
CONSULTING ENGINEERS, INC Wilmington, N.C. 28401-4733 of
I I Check I Job G7Q'�� I For-TIPT> I Job No.
AI
IAI �Tn� k�iI T- 04ZG�
1 " , VouttAl�-:- C� two
IZ—�1r I It VtIw4'::7i
ELF/. GZ"9 _ "�I oGbFtZ
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1 S4 5 LA--
up s, 22.9 = U f - GriAly(� �0.� + zf 1 ",Jae4Z
4- g3(ct�Ft�ic2'— ��57'!�-'x 3,40�- 0,40 t (�j'rSic
D� I

^ Storage Gradient For
RECHARGER 330
c
n
u�
Tota
N.T.S.
7.40 CF/LF
EZU, ',�;z.O
IM" CULTEC, INC.
878 FEDERAL READ
BROOKFIELD, CT 304
t.
Eli
IN
1 4 Z V__ J V 4

04268 PPD East Infiltration
Prepared by Andrew & Kuske Consulting Engineers, Inc
HydroCADO 7.03 sfn 000479 ® 2005 HydroCAD Software Solutic
Type l// 24-hr Rainfall=7.00"
Page 2
Time span=0.00-24.00 hrs, dt=0.05 hrs, 481 points
Runoff by SCS TR-20 method, UH=SCS
Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method
Subcatchment 1S: Drainage Area to East Infiltration System Runoff Area=2.700 ac Runoff Depth>6.28"
Tc=10.0 min CN=94 Runoff=15.68 cfs 1.413 of
Pond 2P: East Infiltration System Peak Elev=24.24' Storage=16,864 cf Inflow=15.68 cfs 1.413 of
Discarded=1.35 cfs 1.100 of Primary=4.34 cfs 0.312 of Outflow=5.69 cfs 1.412 of
Total Runoff Area = 2.700 ac Runoff Volume = 1.413 of Average Runoff Depth = 6.28"

04268 PPD East Infiltration
Type 111 24-hr Rainfall=7.00"
Prepared by Andrew & Kuske Consulting Engineers, Inc Page 3
HydroCAD® 7.03 s1n 000479 ® 2005 HydroCAD Software Solutions LLC 4/8/05
Subcatchment 1S: Drainage Area to East Infiltration System
Runoff = 15.68 cfs @ 12.14 hrs, Volume= 1.413 af, Depth> 6.28"
Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.05 hrs
Type III 24-hr Rainfall=7.00"
Area (ac) CN Description
1.550 98 Roof of PPD Building
0.900 98 Asphalt/Concrete
0.250 50 Grass Soil Urban Lanb Class Ur- Field Sands/Silty Sands -A
2.700 94 Weighted Average
Tc Length Slope Velocity Capacity Description
_(min) _ (feet) (ft/ft) (ft/sec) (cfs)
10.0 Direct Entry, Drainage Area
Subcatchment 1S: Drainage Area to East Infiltration System
Hydrograph
Time (hours)

04268 PPD East Infiltration
Andrew & Kuske Consulting Engineers, Inc
03 s/n 000479 ® 2005 HydroCAD Software Solubc
Pond 213: East Infiltration System
Inflow Area = 2.700 ac, Inflow Depth > 6.28"
Type /// 24-hr Rainfall=7.00"
Page 4
Inflow =
15.68 cfs @
12.14 hrs,
Volume=
1.413 of
Outflow =
5.69 cfs @
12.45 hrs,
Volume=
1.412 af, Atten= 64%, Lag= 19.0 min
Discarded =
1.35 cfs @
11.25 hrs,
Volume=
1.100 of
Primary =
4.34 cfs @
12.45 hrs,
Volume=
0.312 of
Routing by Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.05 hrs
Peak Elev= 24.24' @ 12.45 hrs Surf.Area= 8,360 sf Storage= 16,864 cf
Flood Elev= 29.00' Surf.Area= 6 sf Storage= 18,024 cf
Plug -Flow detention time= 45.5 min calculated for 1.412 of (100% of inflow)
Center -of -Mass det. time= 45.2 min ( 812.6 - 767.4 )
Volume Invert
Avail.Storage Storage Description
#1 21.00'
7,779 cf Custom Stage Data (Prismatic) Listed below,
29,693 cf Overall - 10,245 cf Embedded = 19,448 cf x 40.0% Voids
#2 22.00'
10,245 cf 47.8"W x 30.0"H x 6.251L Cultec R-330 x 220 Inside #1
18,024
cf Total Available Storage
Elevation Surf.Area
Inc.Store Cum.Store
_ (feet)
(sq-ft)
(cubic feet) (cubic -feet)
21.00
8,360
0 0
24.50
8,360
29,260 29,260
24.60
6
418 29,678
27.00
6
14 29,693
Device Routing
Invert
Outlet Devices
#1 Primary
22,75'
18.0" x 60.0' long Overflow Culvert
RCP, square edge headwall, Ke= 0.500
Outlet Invert-- 22.45' S= 0.0050 T Cc= 0.900 n= 0.013
#2 Discarded
0.00'
7.000 in/hr Exfiltration over Surface area
#3 Device 1
22.90'
6.0" x 240.0' long NCDENR Bypass
RCP, square edge headwall, Ke= 0.500
Outlet Invert-- 22.90' S= 0.0000 7 Cc= 0.900 n= 0.012
#4 Device 1
22.90'
3.00' W x 0.25' H Vert. Orifice/Grate C= 0.600
#5 Device 1
24.24'
4.0' long x 0.5' breadth Broad -Crested Rectangular Weir
Head (feet) 0.20 0.40 0.60 0.80 1.00
Coef. (English) 2.80 2.92 3.08 3.30 3.32
#6 Device 1
27.00'
16.0' long x 1.0' high Sharp -Crested Rectangular Weir
2 End Contraction(s)
Discarded OutFlow Max=1.35 cfs @ 11.25 hrs HW=21.08' (Free Discharge)
1­2=Exfrttration (Exfiltration Controls 1.35 cfs)
Primary OutFlow Max=4.33 cfs @ 12.45 hrs HW=24.24' (Free Discharge)
t1=Overflow Culvert (Passes 4.33 cfs of 6.07 cfs potential flow)
3=NCDENR Bypass (Barrel Controls 0.34 cfs @ 1.8 fps)
-Orifice/Grate (Orifice Controls 3.98 cfs @ 5.3 fps)
=Broad -Crested Rectangular Weir (Weir Controls 0.00 cfs @ 0.2 fps)
=Sharp -Crested Rectangular Weir ( Controls 0.00 cfs)

04268 PPD East Infiltration Type/1/ 24-hr Rainfall=7.00"
Prepared by Andrew & Kuske Consulting Engineers, Inc Page 5
HvdroCAD® 7.03 s/n 000479 ® 2005 HvdroCAD Software Solutions LLC eiamF
Pond 213: East Infiltration System
Hydrograph
p Inflow
f7 Outllav
Q Discarded
© Primary
Time (hours)

r/107 Z

04268 PPD East Infiltration
Prepared by Andrew & Kuske
Type/1/ 24-hr Rainfall=9.00"
Inc Page 2
Time span=0.00-24.00 hrs, dt=0.05 hrs, 481 points
Runoff by SCS TR-20 method, UH=SCS
Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method
Subcatchment 1S: Drainage Area to East Infiltration System Runoff Area=2.700 ac Runoff Depth>8.27"
Tc=10.0 min CN=94 Runoff=20.35 cfs 1.860 of
Pond 2P: East Infiltration System Peak Elev=29.07' Storage=18,024 cf Inflow=20.35 cis 1.860 of
Discarded=1.35 cfs 1.276 of Primary=20.02 cfs 0.584 of Outflow=19.96 cfs 1.859 of
Total Runoff Area = 2.700 ac Runoff Volume = 1.860 of Average Runoff Depth = 8.27"

04268 PPD East Infiltration
Andrew & Kuske Consulting Engineers, Inc
Type Ill 24-hr Rainfall=9.00"
Page 3
Subcatchment 1S: Drainage Area to East Infiltration System
Runoff 20.35 cfs @ 12.14 hrs, Volume= 1.860 af, Depth> 8.27"
Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-24.00 hrs, dt= 0.05 hrs
Type III 24-hr Rainfall=9.00"
Area (ac)
CN
Description
1.550
98
Roof of PPD Building
0.900
98
Asphalt/Concrete
0.250
50
Grass Soil Urban Lanb Class Ur- Field Sands/Silty Sands -A
2.700
94
Weighted Average
Tc Length Slope Velocity Capacity Description
10.0 Direct Entry, Drainage Area
Subcatchment 1S: Drainage Area to East Infiltration System
Hydrograph
p RunoR
Tlrtlo (hours)

04268 PPD East Infiltration
Prepared by Andrew & Kuske
Type ill 24-hr Rainfall=9.00"
Inc Page 4
LLC
Pond 2P: East Infiltration System
[93] Warning: Storage range exceeded by 2.07'
[58] Hint: Peaked 2.07' above defined flood level
Inflow Area = 2.700 ac, Inflow Depth > 8.27"
Inflow = 20.35 cfs @ 12.14 hrs, Volume= 1.860 of
Outflow = 19.96 cis @ 12.25 hrs, Volume= 1.859 af, Atten= 2%, Lag= 6.5 min
Discarded = 1.35 cfs @ 10.65 hrs, Volume= 1.276 of
Primary = 20.02 cfs @ 12.24 hrs, Volume= 0.584 of
Routing by Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.05 hrs
Peak Elev= 29.07' @ 12,25 hrs Surf.Area= 6 sf Storage= 18,024 cf
Flood Elev= 27.00' Surf.Area= 6 sf Storage= 18,024 d
Plug -Flow detention time= 42.4 min calculated for 1.855 of (100% of inflow)
Center -of -Mass det. time= 42.0 min (803.6 - 761.6)
Volume Invert
Avail.Storage Storage Description
#1 21.00'
7,779 d Custom Stage Data (Prismatic) Listed below
29,693 d Overall - 10,245 d Embedded = 19,448 d x 40.0% Voids
#2 22.00'
10,245 d 47.8"W x 30.0"H x 6.251 Cuftec R-330 x 220 Inside #1
18,024
d Total Available Storage
Elevation Surf.Area
Inc.Store Cum.Store
(feet)
(sq-ft)
(cubic -feet) (cubic -feet)
21.00
8,360
0 0
24.50
8,360
29,260 29,260
24.60
6
418 29,678
27.00
6
14 29,693
Device Routing
Invert
Outlet Devices
#1 Primary
22.75'
18.0" x 60.0' long Overflow Culvert
RCP, square edge headwall, Ke= 0.500
Outlet Invert-- 22.45' S= 0.0050 ? Cc= 0.900 n= 0.013
#2 Discarded
0.00'
7.000 in/hr Exfiltration over Surface area
#3 Device 1
22.90'
6.0" x 240.0' long NCDENR Bypass
RCP, square edge headwall, Ke= 0.500
Outlet Invert= 22.90' S= 0.0000'P Cc= 0.900 n= 0.012
#4 Device 1
22.90'
3,00' W x 0.25' H Vert. Orifice/Grate C= 0.600
#5 Device 1
24.24'
4.0' long x 0.6' breadth Broad -Crested Rectangular Weir
Head (feet) 0.20 0.40 0.60 0.80 1.00
Coef. (English) 2.80 2.92 3.08 3.30 3.32
#6 Device 1
27.00'
16.0' long x 1.0' high Sharp -Crested Rectangular Weir
2 End Contraction(s)

04268 PPD East Infiltration
Prepared by Andrew & Kuske
Type ll/ 24-hr Rainfall=9.00"
Inc Page 5
Discarded OutFlow Max=1.35 cfs @ 10.65 hrs HW=21.06' (Free Discharge)
2=Exfiltration (Exfiltration Controls 1.35 cfs)
Primary OutFlow Max=19.04 cfs @ 12.24 hrs HW=28.63' (Free Discharge)
t-4=Overflow Culvert (Barrel Controls 19.04 cfs @ 10.8 fps)
3=NCDENR Bypass (Passes < 0.86 cfs potential flow)
—Orifice/Grate (Passes < 8.55 cfs potential flow)
=Broad -Crested Rectangular Weir (Passes < 122.20 cfs potential flow)
=Sharp -Crested Rectangular Weir (Passes < 128.09 cfs potential flow)
Pond 21P: East Infiltration System
Hydrograph
pM
❑ ouMow
O Us=ded
0 Primary
Time (hours)

—R ?..H � - Sw a Flu
Scenario: Base
I-1
Title: PPD Project Englneer: Nonis,Kuske&Tunstali
c:Utaestad\stmdD4268 ppd sw Ontkit.stm Andrew & Kuske Consulting Engineers Sto CAD v5.515.50031
04108105 03:42:44 PM 0 Haestad Methods, Inc. 37 8rookside Road Waterbury, CT 06708 USA [phone] Page i of 1

Scenario: Base
BaseiyeL
DOT Report
PS
-Node-
Upstream
Upstream
Upstream Calculated
-Ground-
HGL-
-Slope-
Section
-Section-
Length
Upstream
Inlet
Inlet
System CA
Upstreamlr4
trezmEnergyDischarge
Shape
(ft)
Downstream
Area
CA
(acres)
Downstreamownstream
Constructed
Capacity
Size
(acres)
(acres)
(ft)
(ft)
(}I/ft)
(cfs)
DI-22
1-1
4.50
1
1.12
1.12
9.50
7.40
0.008321
8.86
Circular
30.00
0-1
10.27
7.141
0.008333
9.59118
inch
Title: PPD Project Engineer: Norris,Kuske&Tunstall
c:Ukaestadkstmcr04268 ppd sw oudet.stm Andrew & Kuske Consulting Engineers StormCAD v5.5 [5.5003)
0N08105 03:42:28 PM O Haested Methods, Inc. 37 Brookside Road Waterbury, CT 06708 USA [phone] Page 1 of 2

Wp � T::
Scenario: Base
to Y�
DOT Report
PS
-Node-
Upstream
Upstream
Upstream Calculated
-Ground-
-HGL-
-Slope-
Section
Section-
Length
Upstream
Inlet
Inlet
System CA
Upstream
Upstream
Energy
Discharge
Shape
(ft)
Downstream
Area
CA
(serer)
Downstream
Downstream
Constructed
Capacity
Size
(acres)
(acres)
(ft)
(ft)
Wit)
(cis)
DI-22
1-1
4.50
1.12
1.12
9.50
7.29
0.008002
719
Circular
30.00
0.1
10.27
6.97
0.008333
9.59118
inch
Title: PPD Project Engineer: Nonis,Kuske&Tunstall
c:%haestaMstmcX04268 ppd sw outlet.stm Andrew & Kuske Consulting Engineers StarmCAD v5.5 (5.50031
04/08/W 03:42:01 PM 0 Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 06708 USA [phone] Page 1 of 2

Scenario: Base
1-1 P-1 1-2
1-6
11trahm
YIW>4
Title: PPD Phase 1 Project Engineer: Andrew & Kuska
c:Vraesta&stmc\04268 ppd phase 1 city.stm Andrew 6 Kuske Consulting Engineers StonnCAD v5.5 [5.5003j
04/08/05 03:36:28 PM ® Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 06708 USA [phone] Page 1 of i

-7�7p fir
Scenario: Base boy -�5O�
DOT Report
P5
-Node-
Upstream
Downstream
Upstream
Inlet
Area
UP)
Upstream
Inlet
CA
(ft2)
Upstream Calculated
System CA
(ft')
-Ground-
Upstream
Downstream
(ft)
-HGL-
Upstream
Downstream
(ft)
-Slope-
Energy
Constructed
(ft/ft)
Section
Discharge
Capacity
(cfs)
-Section-
Shape
Sae
Length
(ft)
P-1
1-1
5,500
5,225
5,225
35.50
26.87
0.007957
0.87
Circular
125.00
1-2
32.50
25.90
0.008000
5.78
15 inch
P-2
1-2
1,875
1,085
6,310
32.50
25.90
0.029516
1.04
Circular
50.00
13
34.00
24.48
0.03000D
11.19
15 inch
P3
13
3,475
2,759
9,069
34.00
24.48
0.022355
1.49
Circular
50.00
1-4
33.75
23.52
0.040000
12.92
15 inch
P-4
1-5
1,190
1,131
1,862
30.63
24.72
0.021123
0.31
Circular
60.00
1-4
33.75
23.52
0.041667
13.19
15 inch
P-5
1-6
770
732
732
30.34
25.13
0.018875
0.12
Circular
24.00
1-5
30.63
24.72
0.020833
9.32
15 inch
P-6
1-4
6.000
5,700
16,631
33.75
23.52
0.001776
2.72
Circular
70.00
1-7
33.50
23.40
0.000000
0.00
15 inch
P-7
1.8
70,850
70,708
70,708
35.00
26.21
0.047335
11.83
Circular
60.00
1-7
33.50
23.40
0.050155
14.44
15 irc11
P-8
1-7
6,040
5,738
93,076
33.50
23.40
0.005155
15.03
Circular
1.00
East intiftratiol
133.50
23.07
0.100000
92.99
24 inch
Title: PPD Phase 1 Project Engineer: Andrew & Kuske
c:\haes1ad\stmc\04268 ppd phase 1 city.stm Andrew & Kuske Consulting Engineers StormCAD v5.515.5003]
04/08/05 03:34:03 PM ®Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 06708 USA [phone] Page 1 of 2

Scenario: Base
DOT Report
P5
-Node-
Upstream
Downstream
Upstream
Inlet
Area
(ft')
Upstream
Inlet
CA
W)
Upstream Calculated
System CA
(ft')
-Ground-
Upstream
Downstream
(ft)
-HGL-
Upstream
Downstream
(ft)
-Slope-
Energy
Constructed
(ftmt)
Section
Discharge
Capacity
(cfs)
Section-
Shape
Size
Length
(ft)
P-1
1-1
5,500
5,225
5,225
35.50
26.91
0.007951
1.07
Circular
125.00
1-2
32.50
2595
0.00800D
5.78
15 inch
P-2
1-2
1,875
1,085
6,310
32.50
25.95
0.02W61
1.28
Circular
50.00
1-3
34.00
24.54
0,030000
11.19
15 inch
P-3
1S
3,475
2,759
9,069
34.00
24.54
0.019386
1.83
Circular
50.00
14
33.75
23.74
0.040000
12.92
15 inch
Pd
1-5
1,190
1.131
1,862
30.63
24.74
0.018059
0.38
Circular
60.00
1-4
33.75
23.74
0,041667
13.19
15 inch
P5
15
770
732
732
30.34
25.15
0.018660
0.15
Circular
24.00
15
30.63
24.74
0.020833
9.32
15 inch
P-6
1-4
6,000
5.700
16,631
33.75
23.74
0.002683
3.35
Circular
70.00
1-7
33.50
23.55
0.000000
0.00
15 Inch
P-7
1-8
70,850
70,708
70,708
35.00
26.58
0.050482
14.51
Ciradar
60.00
1-7
33.50
23.55
0.050000
14,44
15 inch
P-8
1-7
6,040
5.738
93,076
33.50
23.55
0.005867
18.53
Cirn9ar
1.00
East Infiltrallol
133.50
23.22
0.100000
92.99
24 Inch
TRIe: PPD Phase 1 - Project Engineer. Andrew 8 Kuske
01haestafttmc104268 ppd phase 1 city.stm Andrew & Kuske Consulting Engineers StormCAD v5.5 [5.6W3]
04/08/05 0336:19 PM 0 Hassled Methods, Inc. 37 Brookside Road Waterbury, CT 06708 USA [phone] Page 1 of 2

NORRIS, KUSKE & TUNSTALL J. Phillip Norris, P.E. John A. Kuske, III, P.E.
John S. Tunstall, P.E. J.A. Kuske, P.E.
CONSULTING ENGINEERS, INC. James T. Pyrtle, P.E. C. Lawrence Sneeden, Jr., P.E.
902 Market Street • Wilmington, NC 28401-4733 • Phone [phone] • Fax [phone]
www.andrewandkuske.com • office@andrewandkuske.00m
LETTER OF TRANSMITTAL
To:
Ms. Linda Lewis
Date: April 13, 2005
Job No. 04268
NC DENR
Subject:
PPD Corporate Headquarters
Wilmington, NC
WE ARE SENDING YOU VIA
❑ ATTACHED ❑ UNDER SEPARATE COVER
❑ SHOP DRAWINGS ❑ PRINTS ❑ TRACINGS
❑ SPECIFICATIONS ❑ DISKS ❑ COPY OF LETTER
❑
FAX' TRANSMITTAL:- NUMBER OF PAGES
INCLUDING THIS TRANSMITTAL
Call 910-343-9653- if you have' any difficulty-
receiving this message.
COPIES
DATE
NO.
DESCRIPTION
1
02-08-05
Infiltration Testing by ECS
2
Revised plans per your review 04-13-05
❑
❑
AS REQUESTED
FOR YOUR USE
❑ FOR REVIEW AND COMMENT ❑ FOR APPROVAL
❑ FOR BIDS DUE ❑ YOUR PRINTS LOANED TO US
REMARKS:
600 1 a 2005
CC:
SIGNED John S. Tunstall, P.E., /jmc
CONFIDENTIAL AND PRIVILEGED: Information contained in this document is privileged and confidential, intended for the sole use of the
addressee. If you are not the addressee or the person responsible for delivering it to the addressee you are hereby notified that any dissemination,
distribution or copying of this document is strictly prohibited. If you have received this document in error please immediately notify the sender and
return to the address above.

STORMWATER SYSTEM & EROSION CONTROL NARRATIVE
PPD CORPORATE HEADQUARTERS
929 N. FRONT STREET
WILMINGTON, NC 28401
For
River Ventures, LLC
3151 South 11" Street
Wilmington, NC 28412
[phone]
S,e oT U o � I I� (�'�
RECEIVED
February 15, 2005 APR 13 2005
DWQ
Prepared by: PROJ #
NORRIS, KUSKE, & TUNSTALL CONSULTING ENGINEERS, INC.
902 Market Street
Wilmington, North Carolina 28401
[phone]
[phone] (Fax)
E-mail: [e-mail]
NKT Project No. 04268

NARRATIVE NKT PROJECT NO.04268 PPD Corporate Headquarters
DESCRIPTION:
The PPD project site is a 7.48 acres tract located at 929 North Front Street,
Wilmington, NC. The soils of the site consist of sands and silty sands with grades ranging
from 1% to 7%. Approximately 7. acres will be graded to allow construction of the new PPD
Corporate Headquarters building with paved parking and paved access. In addition to the
7.48 acres tract, the 3.12+/- acres tract to the north will be used as construction laydown
area and stockpile area. The runoff from the site is estimated using the rational method 10-
year design storm and rainfall data for the area. Construction is scheduled to begin as soon
as all permits and approvals are obtained.
The project consists of a 13 story building with 2 parking levels below grade and a
surface parking and 2 access drives. Approximately 10.6 acres total will be disturbed for
the construction of the new building.
EROSION CONTROL MEASURES:
The attached plans and specifications give the requirements for erosion control
measures. Silt fencing will be provided along the north & western sides of the site where
stormwater would be expected to sheet flow from disturbed areas directly to adjacent
property. The temporary sediment trap is designed for the south 4.93 acres of the site
(surface parking area and future development area shown on plan to be filled during Phase
1). The north 2.55 acres of the site will be excavated to elevation 8 for the 2 parking decks
below the building. All sediment from a rain event will be trapped within the building
excavation. A silt basin/ temporary sediment trap will be constructed on the south west
portion of the site during construction and restored to its design contours prior to
completion. Prior to building excavation the southwest portion of site shall be bermed to
elevation 13.0. A temporary silt fence will be provided on the west side of this temporary
berm. Gravel construction entrances will be constructed as shown on the plans.
Maintenance will be provided by the grading contractor and developer.
STORMWATER MANAGEMENT MEASURES:
The project site is located in New Hanover County. Land disturbing on the site will
exceed one acre, which requires the site to comply with the City & State regulations. The
site is classified as a redevelopment site by NCDENR. The stormwater runoff from Phase I
development 2.70 acres will be directed to an underground infiltration system. The future
Phase II development will be considered as redevelopment.
CONSTRUCTION SEQUENCE:
The Contractor will install the gravel construction entrance and silt fence prior to
beginning any clearing and grading operations. Additional silt fence will be installed when
and if conditions warrant during construction. Prior to grading operations the temporary
berm/sediment trap will be constructed immediately along with the outlet structure with
protection. Disturbed areas will be landscaped or seeded upon completion.

EROSION CONTROL NOTES AND MAINTENANCE PLAN
1. Install erosion control measures before beginning construction or as soon
thereafter as possible. All erosion and sediment control practices will be
checked for stability and operation following every runoff -producing rainfall but in
no case less than once every week. Any needed repairs will be made
immediately to maintain all practices as designed.
2. Maintain the gravel construction entrances in a condition to prevent mud or
sediment from leaving the construction site. The contractor shall inspect the
construction entrances on a daily basis. This will require periodic top dressing
with additional No. 4 stone. Any objectionable materials spilled, washed, or
tracked onto public roadways shall be removed immediately.
3. Install erosion control measures around the drop inlets as shown on the plans to
trap silt during construction. Inspect the erosion control around the inlets after
each rain and make repairs immediately. Remove sediment when it becomes
0.50 deep to provide adequate storage volume for subsequent rains. When the
contributing drainage area has been adequately stabilized, remove all materials
and any unstable soil and either salvage or dispose of it properly. Bring the
disturbed area to proper grade and appropriately stabilize all bare areas around
the drop inlets.
4. Sediment will be removed from behind the silt fence when it becomes 0.5 feet
deep at the fence. The sediment fence will be repaired as necessary to maintain
a barrier. Silt fence stakes shall be spaced 6 feet apart unless a wire backing is
used with 8 foot stake spacing.
5. Inspect temporary sediment traps / check dams after each period of significant
rainfall. Remove sediment and restore the trap to its original dimensions when
the sediment has accumulated to one-half the design depth of the trap. Place
the sediment that is removed in the designated disposal area and replace the
contaminated part of the gravel facing. Check the structure for damage from
erosion or piping. Periodically check the depth of the spillway to ensure it is a
minimum of 1.5 ft below the low point of the embankment. Immediately fill any
settlement of the embankment to slightly above design grade. Any riprap
displaced from the spillway must be replaced immediately. After all sediment -
producing areas have been permanently stabilized, remove the structure and all
unstable sediment. Smooth the area to blend with the adjoining areas and
stabilize properly.
6. No cut or fill slopes shall exceed a side slope of 1 vertical to 3 horizontal unless
otherwise specified on the plan. All slopes shall be seeded and stabilized within
15 days.

7. All disturbed areas shall be seeded within 15 days of disturbance. All seeded
areas will be fertilized, reseeded as necessary and mulched according to
specifications in the vegetative plan to maintain a vigorous, dense vegetative
cover.
8. More stringent measures shall be used to halt erosion if those shown on this plan
are not effective.
9. All erosion shall be controlled including side slopes before the project is
completed.
10. Remove temporary measures upon completion of project. All permanent
measures will be well established before project closeout.

SECTION 02920
SOIL EROSION AND SEDIMENTATION CONTROL
1. GENERAL
1.1 Contractor shall take every reasonable precaution throughout construction to
prevent the erosion of soil and the sedimentation of streams, lakes, reservoirs, other
water impoundments, ground surfaces, or other property as required by State and Local
regulations.
1.2 The Contractor shall install all required silt fences, and construction entrances at
the initiation of work, and have these measures reviewed and approved by the local
permit authority prior to clearing and grading operations.
1.3 The Contractor shall, within 15 days of suspension or completion of land
disturbing activities, provide permanent protective covering for disturbed areas.
Temporary and permanent erosion control measures shall be coordinated to assure
economical, effective, and continuous erosion and siltation control throughout the
construction and post -construction period. Use the specified seed for both temporary and
permanent seeding.
2. PRODUCTS
2.1 Asphalt for anchoring mulch shall be Type SS-1 Emulsion
2.2 Fertilizer shall be 10-10-10 grade or equivalent.
2.3 Lime shall be dolomitic agricultural ground limestone containing not less than 10
percent magnesium oxide.
2.4 Mulch shall be small grain straw, hay, wood chips, asphalt emulsion, jute or other
suitable material free of undesirable weed seed.
2.5 Phosphate shall be 20 percent superphosphate or equivalent.
2.6 Seed shall be 20% carpet grass, 24% Bermuda, 20% turf Fescue, 10% Creeping
Red Fescue, and 24% Annual Rye grain. Bermuda seed shall be hulled for warm
weather planting and unhulled for cool weather planting. Purity of seed shall be a
minimum of 98 percent and germination shall be a minimum of 85 percent.
2.7 Sift fence shall consist of NCDOT Class A fabric supported metal posts spaced
not more than 6 feet on center. The bottom of the fabric shall be buried a minimum of 6
inches. See details on plans.
2.8 Gravel for check dams shall be #57 washed stone

Michael F. Easley, Governor
William G. Ross, Jr., Secretary
North Carolina Department of Environment and Natural Resources
b Y
April 13, 2005
Mr. Fred Davenport, Jr., Vice President
River Ventures, LLC
3151 S. 17th Street
Wilmington, NC 28412
Subject: Request for Additional Information
Stormwater Project No. SW8 050409
PPD Corporate Headquarters
New Hanover County
Dear Mr. Davenport:
Alan W. Klimek, P.E. Director
Division of Water Quality
The Wilmington Regional Office received an Express Stormwater Management Permit
Application for PPD Corporate Headquarters on April 13, 2005, with a scheduled review date
of April 13, 2005. A preliminary review of that information has determined that the application
is not complete. The following information is needed to continue the stormwater review:
Please provide the calculation of how it was determined that 9,190 cubic feet of
volume has been provided in the proposed Cultec system. Please provide the
available storage volume in one Cultec Recharger 330 HD chamber. I have a
Cultec product book, which indicates that the inside volume in one Recharger
330 HD chamber is 7.4 cubic feet per linear foot of chamber, and that each
chamber is 7.5' long. Please verify this information and revise the calculations,
application and plans as necessary.
2. Please provide a dimension plan with the building, parking and sidewalk areas
dimensioned.
3. Please provide a dimensioned plan view detail of the proposed infiltration area.
Please also show the number of rows of Cultec chambers and the number of
chambers in each row on this detail.
4. Please provide a plan with the 2.7 acre drainage area highlighted.
5. The typical Recharger Cross Section detail indicates that the elevation of the top
of the chambers should be 24.54, (21 + 30.5/12) but the supplement reports that
the overflow elevation is 22.9 and the "Special" curb inlet detail shows the weir
wall at elevation 24.24. At 22.9, the trench height for purposes of determining the
volume available for storage is only 1.9', and at 24.24, the trench height is 3.24'.
The storage elevation reported on the supplement and the weir wall or bypass
line elevation must be the same. See item #6 below.
North Carolina Division of Water Quality 127 Cardinal Drive Extension Phone [phone] Customer Senrice1.877-623-6748
Wilmington Regional Office Wilmington, NC 28405-3845 FAX [phone] Internet: h2o enr.state.nc.us ne
orthCarolina
An Equal Opportunity/Affirmative Action Employer— 50% Recyded/10% Post Consumer Paper vva`ulra"1/

Mr. Davenport
April 13, 2005
Stormwater Application No. SW8 050409
6. Please remove the 2.5' x 3" orifice in the weir wall of the "Special'
infiltration system curb inlet detail at elevation 22.9. If this orifice is allowed
to remain at 22.9, the application must be revised. The trench volume
must be recalculated based on a trench height of only 1.9 feet (22.9 —
21.0). Additionally, if overflow occurs at 22.9, the Cultec chambers will not
be fully engaged, so that storage volume will be lost as well.
7. In order for the infiltration system to function according to the rules, every
inlet that directly connects into the infiltration system, (i.e., CI-7, CI-9 and
CI-10) will need either a weir set at the appropriate overflow elevation that
drains to a bypass line, or the 6" bypass line will need to be raised to the
correct overflow elevation.
8. The 18" RCP shown on the "Typical Cl/DI/JB" detail is set at elevation
22.0, and the 6" bypass line is set at elevation 22.9. How will this work? As
water backs up, it will flow into the 18" line first, before it ever gets a
chance to flow into the 6" bypass. The 18" invert needs to be raised to
24.24 or 24.54, depending.
9. Please provide documentation of your status as the manager of River
Ventures, LLC. This is a manager -managed LLC, there is no Vice
President. Please revise Sections 1.1 and 1.2 of the application
appropriately. Only the manager of the LLC can sign the stormwater
application. The signature of the consultant or other third party can be
accepted only if accompanied by a letter of authorization signed by the
manager.
Please note that this request for additional information is in response to a preliminary
review, and may be subject to a reapplication fee of $1000.00 due to the
incompleteness of this Express application. The requested information should be
received in this Office prior to April 20, 2005, 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 need additional time to submit the information, please mail, email or fax your
request for a time extension to the Division at the address and fax number at the bottom
of the first page of this letter. The request must indicate the date by which you expect to
submit the required information.
The construction of any impervious surfaces, other than a construction entrance under
an approved Sedimentation Erosion Control Plan, is a violation of NCGS 143-215.1 and
is subject to enforcement action pursuant to NCGS 143-215.6A.
Please reference the State assigned project number on all correspondence. Any
original documents that need to be revised have been sent to the engineer or agent. All
original documents must be returned or new originals must be provided. Copies are not
acceptable. If you have any questions concerning this matter please feel free to call me
at [phone].
Page 2 of 3

Mr. Davenport
April 13, 2005
Stormwater Application No. SW8 050409
Sincerely,
Linda Lewis
Environmental Engineer
linda.lewis(a) ncmail. net
ENB/arl: S:\WQS\STORMWATER\ADDINFO\2005\050409.apr05
cc: John Tunstall, P.E., Norris Kuske & Tunstall
Linda Lewis
Page 3 of 3

PPD S W 8 050409
Subject: PPD SW8 050409
From: Linda Lewis <[e-mail]>
Date: Wed, 13 Apr 2005 18:59:28 -0400
To: "John Tunstall / Norris, Kuske & Tunstall Engineers" <[e-mail]>
John:
Attached please find my request for additional information. The application and
supplement are being returned via USPS tomorrow.
Linda
-- --- - -- --- ---- - ---- --- -- -
------- ----- - ------------
Content -Type: application/msword;i
50409.apr05.doc!
Content -Encoding: base64
I of 1 4/13/2005 6:59 PM

Page I of 1
North Carolina
Elaine F. Marshall DEPARTMENT OF THE
Secretary SECRETARY OF STATE
Corporations
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OCorporations Division
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Print
*Printable Page
PO Box 29622 Raleigh, NC 27626-0622 [phone]
Date: 4/13/2005
Click here to:
View Document Filings 1
Print apre-populated Annual Report Form I File an Annual Report I
Corporation Names
Name Name Type
NC River Ventures, LLC Legal
Limited Liability Company Information
SOSID:
FID:
Status:
Date Formed:
Citizenship:
State of Inc.:
Duration:
Registered Agent
Agent Name:
Registered Office Address:
Registered Mailing
Address:
Principal Office Address:
Principal Mailing Address:
0717893
Current -Active
3/24/2004
Domestic
NC
Perpetual
Law Office Jack B. Styles, P.C.
211 E Six Forks Road
Suite 204
Raleigh NC 27609
211 E Six Forks Road
Suite 204
Raleigh NC 27609
No Address
No Address
For questions or comments about the North Carolina Secretary of State's web site, please send e-mail to Webmaster.
http://www.secretary.state.nc.us/Corporations/Corp.aspx?Pitemld=6448735 4/13/2005

SOSID: 717893
Date Filed: 3/24/2004 2:44:00 PM
Elaine F. Marshall
North Carolina Secretary of State
C200408400037
State of North Carolina
Department of the Secretary of State
Limited Liability Company
Articles of Organization
Pursuant to § 57C-2-20 of the General Statutes of North Carolina, the undersigned does
hereby submit these Articles of Organization for the purpose of forming a limited liability
company.
The name of the limited liability company is:
River Ventures, LLC
2. The latest date on which the limited liability company is to dissolve is:
Perpetual
The name and address of each organizer executing these articles of organization is
as follows:
Jack B. Styles
211 E. Six Forks Road, Suite 204
Raleigh, NC 27609
4. The street address and county of the initial registered office of the limited liability
company is:
Number and Street: 211 Six Forks Road, Suite 204
City, State, Zip Code: Raleigh, NC 27609
County: Wake
The mailing address if different from the street address of the initial registered
office of the limited liability company is:
6. The name of the initial registered agent is:
Jack B.Styles

Check one of the following:
(i) Member -managed LLC: all of the members by virtue of their
status as members shall be managers of this limited liability
company.
X (ii) Manager -managed LLC: except as provided by N.C.G.S. § 57C-3-
20 (a), the members of this limited liability company shall not be
managers by virtue of their status as members.
The organizer shall perform the ministerial duty of executing and filing these
articles of organization. If members are named in these articles of organization,
the organizer shall not have any further duty or responsibility regarding the
limited liability company by virtue of acting as organizer.
9. The name and address of every initial member named in the Articles of
Organization is:
10. Any other provisions which the limited liability company elects to include are
attached.
11. These articles will be effective upon filing, unless a date and/or time is specified:
Signed on Tuesday, March 23, 2004.
l�
Sig iature
Jack B. Styles. Organizer
Type or Print Name and Title

I Oa. Limitation of Liability. No Manager or Member of the Company shall be liable
to the Company or its Members for monetary damages for an act or omission in
such person's capacity as a Manager or Member, except as provided in Chapter
57C of the General Statutes of North Carolina for (i) acts or omissions which a
Manager knew at the time of the acts or omissions were clearly in conflict with
the interests of the Company, (ii) any transaction from which a Manager derived
an improper personal benefit, or (iii) acts or omissions occurring prior to the date
this provision becomes effective. If Chapter 57C of the General Statutes of North
Carolina is amended to authorize action further eliminating or limiting liability of
a Manager or Member, then the liability of any Manager or Member of the
Company shall be eliminated or limited to the fullest extent permitted by Chapter
57C of the General Statutes of North Carolina as so amended. Any repeal or
modification of this section shall not adversely affect the right or protection of a
Manager or Member existing at the time of such repeal or modification.
I Ob. Indemnification. The Company shall indemnify the Managers and Members to
the fullest extent permitted or required by Chapter 57C of the General Statutes of
North Carolina, as amended from time to time, and the Company may advance
expenses incurred by the Manager or Member upon the approval of the Managers
and the receipt by the Company of an undertaking by such Manager or Member to
reimburse the Company unless it shall ultimately be determined that such
Manager or Member is entitled to be indemnified by the Company against such
expenses. The Company may also indemnify its employees and other
representatives or agents up to the fullest extent permitted under Chapter 57C of
the General Statutes of North Carolina or other applicable law, provided that the
indemnification in each such situation is first approved by Members owning a
majority in interest.
I Oc. Operating Agreement. The Company shall be operated pursuant to a written
operating agreement. No purported oral operating agreement among the members
shall be enforceable. In the event that the members do not sign a written
operating agreement, the Company shall be operated in accordance with the
applicable provisions of N.C.G.S. Chapter 57C, and the applicable provisions of
that Chapter shall be deemed to be the operating agreement of the Company. In
the event that the members sign a written operating agreement which fails to
address any matter, that matter shall be governed by the applicable provisions of
N.C.G.S. Chapter 57C.

o
ENGINEERING CONSULTING SERVICES, LTD.
Geotechnical • Construction Materials • Environmental
as ua. i
Mr. Michael Mesnard, AIA
Synthesis CDA
530 Causeway Drive
Wrightsville Beach, North Carolina 28480
Subject: Infiltration Testing
PPD Headquarters Building
Wilmington, North Carolina
Dear Mr. Mesnard:
February 8, 2005
RECEIVED
FEB 10 25
ECS, Ltd. Project No. 11204
Engineering Consulting Services, Ltd. (ECS) recently conducted an infiltration evaluation for
the proposed PPD Headquarters Building in Wilmington, North Carolina. This letter, with
attachments, is the report of our investigation.
Field Investigations
On February 4, 2005, ECS conducted an investigation of the subsurface soil and ground water
conditions at the approximate locations specified by John Tunstall, P.E. of Norris, Kuske &
Tunstall Consulting Engineers, Inc. indicated on the attached site sketch. Mr. Tunstall was
contacted due to the presence of obstructions and debris at the original proposed locations. Mr.
Tunstall requested that the testing be performed at the new locations indicated on the attached
site sketch. The purpose of our investigation was to determine the subsurface soils and the
infiltration rate of the subsurface soils. We investigated the subsurface soil and ground water
conditions by drilling two hand auger borings to a depth of approximately six feet below the
existing ground surface at the approximate locations indicated on the site sketch. We visually
classified the subsurface soils. The attached Infiltration Evaluation Form provides a summary
of the subsurface conditions encountered at the hand auger boring locations and the results of
our infiltration tests.
Our field classifications indicate that the subsurface soils at the test location #1 consisted of tan
fine to medium sand with construction debris and gray fine to medium sand. Our field
classifications indicate that the subsurface soils at the test location #2 consisted of gray brown
silty fine to medium sand and gray white fine to medium sand strata.
Ground water was encountered at a depth of 24 inches below present site grade at boring
location #1. Groundwater was not encountered in boring location #2.
7650 Market Street, Wilmington, NC 28411 [phone] FAX [phone] wn�c.ecslimited.com

Inlilnatmn Evaluation
PPD Headquarters Building
Wilmington, North Carolina
ECS Project No 22.11204
We conducted two infiltration tests near the hand auger boring locations. The infiltration tests
were conducted at the depths specified by Mr. Tunstall at the ground surface at location #1 and
at a depth of 48 inches below existing grade at location #2. The results of the tests are
summarized on the attached Infiltration Evaluation sheet and are also listed below.
Infiltration test 91 was performed at a depth of approximately 3 inches below existing grade and
indicated an infiltration rate of 0.05 inches per minute (3 in/hour). Infiltration test #2 was
performed at a depth of approximately 48 inches below existing grade and indicated an
infiltration rate of 0.3 inches per minute (18 in/hour). Please see the attached site sketch for the
infiltration test location.
Evaluations
The infiltration tests were performed at the depths specified by Mr. Tunstall and stated above.
The lower stratum of relatively free -draining fine to medium sands is expected to have
infiltration rates considerably greater than the controlling infiltration rates for the shallow soils.
It is also likely that the seasonal high groundwater conditions and infiltration rates can vary
across the site due to naturally occurring soil type and because of the surface topography.
If you have any questions regarding this report, please contact us at [phone].
Respectfully,
ENGINEERING CONSULTING SERVICES, LTD.
Winslow Goins, E.I. Walid M. Sobh,
Staff Engineer Principal Engim
NC License No.
Cc: Mr. Jolm Tunstall, P.E.
Attachments: Site Sketch
Infiltration Evaluation
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DENOTES APPROXIMATE LOCATION OF HAND
AUGER BORING AND INFDLTRATION TEST
INFILTRATION LOCATION
SITE MAP
PPD HEADQUARTERS
BUILDING
WILMINGTON, NC

Engineering Consulting Services, Ltd.
Infiltration Evaluation
Job Number: 11204 Location: Wilmington, NC
Job Name: PPD Headquarters Building
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Remarks
1
2/04/2005
0-36"
Tan Fine to Medium SAND with Construction
Debris
Ground water was encountered at 24
inches below surface grade
36-72"
Gray Fine to Medium SAND
Infiltration Test #I[Rate=0.05 in/min
2
2/04/2005
0-81,
ABC Stone
No Ground water was encountered
842"
Tan White Fine to Medium SAND
Infiltration Test 4 ][Rate�.3 in/min
42-72"
Gray Brown Silty Fine to Medium SAND