SW8000630_HISTORICAL FILE_20001019

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SW8 000tz3c,
DOC TYPE
❑ CURRENT PERMIT
❑ APPROVED PLANS
0 HISTORICAL FILE
❑ COMPLIANCE EVALUATION INSPECTION
DOC DATE
20oo io 19
YYYYMMDD

,.State of North Carolina
Department of Environment
and Natural Resources
Wilmington Regional Office
James B. Hunt, Jr., Governor
Bill Holman, Secretary
Division of Water Quality
Mr. Harry L. Kraly, Vice -President
Crown Box Corporation
PO Box 2538
Wilmington, NC 28401
Dear Mr. Kraly:
1ILTZ.—IIWA
e �®
NCDENR
NORTH CAROLINA DEPARTMENT OF
ENVIRONMENT AND NATURAL RESOURCES
October 19, 2000
Subject: Permit No. SW8 000630
Federal Express Ground
High Density Stormwater Project
New Hanover County
The Wilmington Regional Office received a complete Stormwater Management Permit Application for Federal
Express Ground on August 10, 2000. 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 21-1.1000. We are
forwarding Permit No. SW8 000630 dated October 19, 2000, for the construction of Federal Express Ground.
This permit shall be effective from the date of issuance until October 19, 2010, 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 ofthe stormwater management
system will result in future compliance problems.
If any parts, requirements, or limitations contained in this permit are unacceptable, you have the right to request an
adjudicatory hearing upon written request within thirty (30) days following receipt of this permit. This request must
be in the form of a written petition, conforming to Chapter 150B of the North Carolina General Statutes, and filed
with the Office of Administrative Hearings, P.O. Drawer 27447, Raleigh, NC 27611-7447. Unless such demands
are made this permit shall be final and binding.
If you have any questions, or need additional information concerning this matter, please contact Scott Vinson, or
me at [phone].
Sincerely,
Rick Shiver
Water Quality Regional Supervisor
RSS/sav: S:\WQS\STORMWAT\PERMIT\000630.00T
cc: Phil Tripp, P.E.
Tony Roberts, New Hanover County Inspections
Beth Easley, New Hanover County Engineering
Scott Vinson
Wilmington Regional Office
Central Files
127 Cardinal Dr. Ext., Wilmington, North Carolina 28405 Telephone [phone] FAX [phone]
An Equal Opportunity Affirmative Action Employer 50% recycled/10% post -consumer paper

State Stormwater Management Systems
Permit No. SW8 000630
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 ofNorth Carolina as amended, and
other applicable Laws, Rules, and Regulations
PERMISSION IS HEREBY GRANTED TO
Crown Box Corporation
Federal Express Ground
New Hanover County
FOR THE
construction, operation and maintenance of a wet detention basin in compliance with the provisions of 15A NCAC
21-1 .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 October 19, 2010 and shall be subject to the following
specified conditions and limitations:
I. DESIGN STANDARDS
1. This permit is effective only with respect to the nature and volume of stormwater described in the
application and other supporting data.
2. This stormwater system has been approved for the management of stormwater runoff as described on page
3 of this permit, the Project Data Sheet. The stormwater control has been designed to handle the runoff from
127,744 square feet of impervious area.
Approved plans and specifications for this project are incorporated by reference and are enforceable parts
of the permit.
4. The tract will be limited to the amount of built -upon area indicated on page 3 of this permit, and per
approved plans.
2

Project Name:
Permit Number:
Location:
-Applicant• -
Mailing Address:
State Stormwater Management Systems
Permit No. SW8 000630
DIVISION OF WATER QUALITY
PROJECT DESIGN DATA SHEET
Federal Express Ground
SW8 000630
New Hanover County
Mr. Harry L. Kraly, Vice -President
Crown Box Corporation
PO Box 2538
Wilmington, NC 28401
Application Date: August 10, 2000
Name of Receiving Stream/Index #: UT Smith Creek / 18-74-63
Classification of Water Body:
If Class SA, chloride sampling results:
Pond Depth, feet:
Permanent Pool Elevation, FMSL
Drainage Area, acres:
Total Impervious Surfaces, ft2:
Buildings, ft2:
Parking, ft2:
Sidewalks, ft2:
Offsite Area entering Pond, ft2:
Required Surface Area, ft2:
Provided Surface Area, ft2:
Required Storage Volume, ft':
Provided Storage Volume, ft':
Temporary Storage Elevation, FMSL:
Controlling Orifice:
"C Sw"
n/a
7.00
18.00
3.19
127,744
15,375
103,932
8,740
none, per Engineer
5,527
6,740
10,160
16,040
KOX1I11
1.50" � pipe
i

State Stormwater Management Systems
Permit No. SW8 000630
11. SCHEDULE OF COMPLIANCE
The stormwater management system shall be constructed in it's 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.
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. -Seiniarinual scheduled inspections (every 6 months).
b. Sediment removal.
C. Mowing and revegetation of side slopes.
d. Immediate repair of eroded areas.
e. Maintenance of side slopes in accordance with approved plans and specifications.
f. Debris removal and unclogging of outlet structure, orifice device and catch basins and piping.
g. Access to the outlet structure must be available at all times.
4. Records of maintenance activities must be kept and made available upon request to authorized personnel
of D WQ. The records will indicate the date, activity, name of person performing the work and what actions
were taken.
Decorative spray fountains will not be allowed in the stormwater treatment system.
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.
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.
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.
The following items will require a modification to the permit:
a. Any revision to the approved plans, regardless of size.
b. Project name change.
C. Transfer of ownership.
d. Redesign or addition to the approved amount of built -upon area.
e. Further subdivision, acquisition, or sale of the project area. The project area is defined as all property
owned by the permittee, for which Sedimentation and Erosion Control Plan approval was sought.
f. Filling in, altering, or piping of any vegetative conveyance shown on the approved plan.
10. The Director may determine that other revisions to the project should require a modification to the permit.
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.
O

State Stormwater Management Systems
Permit No. SW8 000630
12. Prior to the sale of any portion of the property, an access/maintenance easement to the stormwater facilities
shall be granted in favor of the permittee if access to the stormwater facilities will be restricted by the sale
of any portion of the property.
13. The permittee is responsible for verifying that the proposed built -upon area does not exceed the allowable
built -upon area.
14. The runoff from all built -upon area on the project must be directed into the permitted stormwater control
system.
15. 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.
16. The permittee shall notify the Division of any mailing address changes within 30 days.
III. GENERAL CONDITIONS
1. This permit is not transferable. In the event there is a desire for the facilities to change ownership, or there
is a name change of the Permittee, a formal permit request must be submitted to the Division of Water
Quality accompanied by an application fee, documentation from the parties involved, and other supporting
materials as may be appropriate. The approval of this request will be considered on its merits and may or
may not be approved.
2. Failure to abide by the conditions and limitations contained in this permit may subject the Permittee to
enforcement action by the Division of Water Quality, in accordance with North Carolina General Statute
143-215.6A 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)
which have jurisdiction.
4. In the event that the facilities fail to perform satisfactorily, including the creation of nuisance conditions,
the Permittee shall take immediate corrective action, including those as may be required by this Division,
such as the construction of additional or replacement stormwater management systems.
5. The permittee grants DENR Staff permission to enter the property 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.
Permit issued this the 19th day of October, 2000.
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
C An , �_ A, Cj
—1� Kerr 1. Stevens, Director
T Division of Water Quality
By Authority of the Environmental Management Commission
Permit Number SW8 000630

State Stormwater Management Systems
Permit No. SW8 000630
Federal Express Ground
Stormwater Permit No. SW8 000630
New Hanover County
Designer's Certification
1, , as a duly registered in
the State of North Carolina, having been authorized to observe (periodically/weekly/full time) the construction of
the project,
ject)
for (Project Owner) hereby state that, to the best of my abilities, due care
and diligence was used in the observation of the project construction such that the construction was observed to be
built within substantial compliance and intent of the approved plans and specifications.
The checklist of items on page 2 of this form is included in the Certification.
Noted deviations from approved plans and specification:
SEAL
Signature
Registration Number
Date

State Stormwater Management Systeri)s
Permit No. SW8 000630
Certification Requirements:
The drainage area to the system contains approximately the permitted acreage.
2. The drainage area to the system contains no more than the permitted amount of built -upon area.
3. All the built -upon area associated with the project is graded such that the runoff drains to the system.
4. The outletibypass structure elevations are per the approved plan.
-5. The outlet structure is located per the approved plans.
--
6. Trash rack is provided on the outlet/bypass structure.
7. All slopes are grassed with permanent vegetation.
8. Vegetated slopes are no steeper than 3:1.
9. The inlets are located per the approved plans and do not cause short-circuiting of the system.
10. The permitted amounts of surface area and/or volume have been provided.
11. Required drawdown devices are correctly sized per the approved plans.
12. All required design depths are provided.
13. All required parts of the system are provided, such as a vegetated shelf, and a forebay.
14. The overall dimensions of the system, as shown on the approved plans, are provided.
cc: NCDENR-DWQ Regional Office
Tony Roberts, New Hanover County Building Inspector
7

TE 99113
'"`i�.�u',�.4.OFFICE',tUSE�ONLY+•'r•*,'+`u�{.t �14t i'n"..l.la"..L°�� '{'Y C74
Date Received
Fee Paid
Permit Number
- oo
ZZ.1 a--
30
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENTPERMIT APPLICATION FORM
This form may be photocopied for use as an original
I. GENERAL INFORMATION
I . Applicants name (specify the name of the corporation, individual, etc. who owns the project):
2. Print Owner/Signing Official's name and title (person legally responsible for facility and compliance):
Harry L. Kraly, Vice -President
3. Mailing Address for person listed in item 2 above:
City: Wilmington State: NC Zip: 28401
Telephone Number:
4. Project Name (subdivision, facility, or establishment name — should be consistent with project name on
plans, specifications, letters, operation and maintenance agreements, etc.):
Federal Express Ground
5. Location of Project (street address):
.,,.d -__.
City: Wilmington County: New Hanover
6. Directions to project (from nearest major intersection):
approx. 500 If south from the intersection of SR 1302 and SR 1311
7. Latitude : N 340 16' 00" Longitude: W 770 55' 00" of project
8. Contact person who can answer questions about the project:
Name: Phillip Tripp Telephone Number: 910-763-5100
II. PERMIT INFORMATION:
1. Specify whether project is (check one): X New Renewal Modification
Form SWU-101 Version 3.99 Pagel of4

2. If this application is being submitted as the result of a renewal or modification to an existing permit, list
The existing permit number and its issue date (if known)
3. Specify the type of project (check one):
Low Density X High Density Redevelop
4. Additional Project Requirements (check applicable blanks):
CAMA Major X Sedimentation/Erosion Control
General Permit Other
404//401 Permit NPDES Stormwater
Information on required state permits can be obtained by contacting the Customer Service Center at
1-877-623-6748.
II1. PROJECT INFORMATION
1. 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.
stormwater detention pond
2. Stormwater runoff from this project drains to the Cape Fear River basin.
3. Total Project Area: 3.19 acres 4. Project Built Upon Area: 92.0 %.
5. I -low many drainage basins does the project have? 1
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.
Basin"Information, t-vof „, °W,
it. ,tiltdleltIR
Receiving Stream Name
Unnamed trib to Smith Creek
Receiving Stream Class
C-SW
Drainage Basin Area
3.19 ac
Existing Impervious * Area
-
Proposed Impervious * Area
2.93 ac
% Impervious* Area (total)
92.0 %
Irripen ious;*?Surface Area' s
a t �Dramage Basm�'l
r Dra rage Basui.2i`{
--.,
On-site Buildings
15,375 sf
On -site Streets
-
On -site Parking
103,932 sf
On -site Sidewalks
8,437 sf
Other on -site
-
Off -site
Total
I E=127,744 sf
E_
* 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

10
7. How was the off -site impervious area listed above derived?
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 NA as issued by the Division of Water Quality. These covenants may
not be changed or deleted without the consent of the State.
2. No more than NA square feet of any lot shall be covered by structures of 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. Swales 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 modificalionprior
to construction.
5. Allpermittedrunofffrom outparcels orfuture development shall be directed into thepermittedstormwaier control
system. These connections to the stormwater control system shall be perforated in a manner that maintains the
integrity and performance of the system us 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
Form SWU-103
Form SWU-104
Form SWU-105
Form SWU-106
Form SWU-107
Form SWU-108
Form SWU-109
Wet Detention Basin Supplement
Infiltration Basin Supplement
Low Density Supplement
Curb Outlet System Supplement
Off -Site System Supplement
Underground Infiltration Trench Supplement
Neuse River Basin Supplement
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.
1. Please indicate that you have provided the following required information by initialing in the space
provided next to each item.
Applicant's Initials
• Original and one copy of the Stormwater Management Permit Application Form CDC
• One copy of the applicable Supplement Form(s) for each BMP czr_
• Permit application processing fee of $420 (payable to NCDENR) C'/X_ •
• Detailed narrative description of stormwater treatment/management C00
• Two copies of plans and specifications, including: HOC.
- Development/Project name
- Engineer and firm
- Legend
- North arrow
- Scale
- Revision number and 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
- Details of roads, drainage features, collection systems, and stormwater control measures
- 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)
Vll. 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.
Designated agent (individual or firm): Tripp Engineering, P.C.
Mailing Address: 419 Chestnut Street
City: Wilmington State: NC Zip: 28401
Phone: [phone]
VIII. APPLICANT'S CERTIFICATION
Fax: [phone]
I, (print or type name of person listed in General Information, item 2) Harry L. Kraly
certify that the information included on this permit application form is, to the best of my knowledge, correct and
that the project will be constructed in conformance with the approved plans, that the required deed restrictions
and protective covenants will be recorded, and that the proposed project complies with the requirements of 15A
NCAC 21-1.1000. J
Signature: / lax Date: 1�211, eel
Form SWU-101 Version 3.99 Page 4 of 4

TE 99113
Federal Express Ground
Stormwater Permit No. SW8 000630
New Hanover County
Engineer's Certification
I, Phillip G. Trinn , as a duly registered Professional Engineer in the State of North
Carolina, having been authorized to observe (periodically/week ne) the construction of the
project,
Federal Express Ground (Project)
for _Crown Box Corporation (Project Owner) hereby state that, to the best of my abilities, due
care and diligence was used in the observation of the project construction such that the construction was
observed to be built within substantial compliance and intent of the approved plans and specifications.
`0`0 M1GIAR04 ,/1%.,
Signature ........�9
F Sp";G.,
Registration Number 17374
Date �2' !'Z %�� F�6'GINE`� Z
O
J.\\°�

10/1-7/1996 07:11 9107635631 TRIPP ENGINEERING
PAGE 01
TRwp ENGINEERING, P.Ce
419 Chestnut Street
Wilmington, North Carolina 28401
Phone: [phone] e FAX: [phone]
LETTER OF TRANSMITTAL
Job No. �9 Il?_
To: },►cmt%'� Date: MHC3_00
Attention: 41 o;f I�l/JSCA� Subject: Ego Fxp
✓FAX TRANSMITTAL: NUMBER OF PAGES INCLUDES COVER Z
I am sending you, ( ) ATTACHED ( ) UNDER SEPARATE COVER
( ) Prints ( ) Tracings ( ) Copy of letter ( ) Specifications ( ) Other
_Copies Item No Description
4 WIF'7 T265-f• SJPP-
These are transmitted as checked below.
( �/or Approval ( Dior Your Use ( ) Sign & Return ( ) Review
Remarks:
Signed: e" we1a< Tp - 1.1ye-Z

TRII'P ENGINEERING, P.C.
419 Chestnut Street
Wilmington, North Carolina 28401
Phone: [phone] • FAX: [phone]
August 7, 2000
NCDENR
Division of Environmental Management
Water Quality Section
127 Cardinal Drive
Wilmington, NC 28405-3845
Attn: Mr. Scott Vinson
Re: Federal Express Ground
SW8 000630
New Hanover County, NC
TE.99113
Dear Scott:
RI TIE1-VED
AUG 10 2000
BY: rS4
In response to your correspondence dated July 25, 2000, we offer the following:
1. A wetland line signed off on by the Corps of Engineers has been provided.
2. A highlighted plan has been provided.
3. The pond detail has been corrected.
4. The outlet structure has been corrected.
5. The permanent pool has been dimensioned.
6. The pond shape has been revised to provide a 3:1 L:W ratio.
7. The forebay has been corrected to be closer to the 20% requirement.
Please review for approval and contact us with any questions or comments.
Thank you.
Sincerely,
Tripp Engineering, P.C.
C444
Charles D. Cazier, E.I.
CDC:dcb
Enc.

8/7100
CDC
Total Drainage Area
R. acres
138,865 3.19
Impervious Area
Land Use
sq. R.
acres
buildings
15.375
0.35
parkinglasphaft
103,932
2.39
gmveVparldng
0
0.00
sidewalk
8,437
0.19
future building
0
0.00
wasting rki build' s
0
0.00
Total
127,744
2.93
Time of Concentration
Hydraulic Length (L) = 18
change in H hit (K = 4.5 R.
17.29 min.
Flow for 10 year, 6 hour Stomr (010)
QP E _ (CME) x (lip) x (Area)
5.02 cis
OPoar(Cmw) x (lid x (Area)
18.08 cis
Jtlll J{VI tl VY Y
CN = (98)(% imp.) + (60)(1-% Imp.)
95
P = 4.82 in. forl Oyr, 6 hr storm
S = 1000/CN - 10
0.53
Depth (D)= [P-(0.2)(S)f / [P+(0.8)(S)1
4.24 in.
Time to Peak Flow.
TP s [(43.5)(D)(Area)] / OzPosr
32.54 min.
[a.•."iTID7�LL•1•ZFL!I�
P.A Ci,e
Elevation
R.
Surface Area
. R.
Normal Pod
18.00
6,740
Flood Pool
20.00
9,300
Top of Bank
21.00
10,687
Bottom of Pool
11.00
42
FEDERAL EXPRESS GROUND
Stonmvater Calculations
% impervious = 0.920
92.0%
say 93.0%
CPIE' 0.25
CP =
(% imp .)(.95)+(1-% imp.)(.25)
=
0.90
Ila'
6.30 irUhr
1=5 =
7.13 in/hr
Flow for 25 year, 8 hour Storm (0,)
QME' (CPNE) X (125) x (Area)
5.68 cfs
Ql v (CPosr) x (126) x (Area)
20.46 ds
UN = ('.W)(`16 Imp.) ♦ (bv)(1-9 IMP.)
95
P = 5.71 in. for 25 yr, 6 hr storm
S = 1000/CN - 10
= 0.53
Depth (D)= [P-(0.2)(S) f I [P+(0.8)(S)]
5.12 in.
Time to Peak Flow
TP = [(43.5)(D)(Area)] / Qlaxsr
34.73 min.
State Surface Area Requirement at normal
Provided Stoma Volume: E
Vd. _ [(Normal pool SA+ Flood Pod r
x (F.P. slev. - N.P. elev.) IIIrj
16,040 cu. R. 1111
�E C E ! V ED
AUG 10 2000
DWO ,
PROD #
/Q SEAL n :a r-
3 a 17374
.......... �Q
GRONy-,�
99113POND.As 1 of 2
Pond side slopes = 3 :1
Depth below N.P. = 7 R.
SAIDA= 0.0402
(Chart for 90% TSS Removal for Wet Detention
Pond without Vegetative Finer
Required SA = (SA/DA) x (Total Drainage Area)
5,582 sq. R.
ime Required fm Storage of first V of
_ [(1112) x (DA) x (% imp.)] +
[(1112) x (DA) x (1-% Imp.) x C]
C=0.2
= to all eu a
99113

8/7100 FEDERAL EXPRESS GROUND
CDC Stormwater Calculations
Pond Volume:
Norw=ool SA = 8,740 sq. R.
Vol. _ ((N.P. SA + Bottom SA) 121 x (N.P. al. - Bottom el.)
= 18,651 cu. ft.
Forebav:
Required Volume
Vol. = 20% of total pennenant storage volume
3,730 cu. ft.
Outlet Structure Desion:
Flow for 2-day drawdown:
for 1st 1" of stormvrater,
Q = Required Vol. / 172,800 sec. (2days)
0.063 cfs
Required Area of Pipe for 2-day drawdown
A- Q/[Cdx SQRT(2xgxh)I
Cd - 0.6
9. 32.2 ft./s'
h = (F.P. elev.- N.P. elev.) /2
1 ft.
A = 0.0130 sq. ft.
Diameter of Pipe for 2-day drawdown:
DIA. = SQRT[(A x 4) / pl)
0.1287 ft.
1.54 in.
*Use: 1.50 in diameter Rie,
Outlet Structure Check:
Using a 4' x 4' Basin,
Perimeter L = 18 ft.
Q = CIA
C = (% imp.)(.95) + (1-% imp.)(.25)
Call
1 = 7.13 in. for a 25 yr. Storm
A = 3.19 Acres
20.46 cfs
Q= CwxLxH"
H - [Q / (Cw x L)IM
Cw - 3
0.57 ft.
Peak elevation = good pool elevation + H
20.57 ft.
Provided Volume
Bottom SA -
538 sq. ft.
Normal Pool SA -
2,112 sq. 4.
Vol. _
[(N.P. $A+ Bottom SA) / 21 x (N.P. el. - Bottom el.)
3,975 cu, ft,
depth =
3 ft.
Flow far 5-day drawdown:
for 1 st 1' of stormwater,
Q = Required Vol. / 432.000 sec. (5days)
0.025 cfs
Required Area of Pipe for 5-day drawdown
A= 0/[CdxSQRT(2xgxh)]
Cd - 0.6
9. 32.2 ftJs2
h = (F.P. elev. - N.P. elev.) / 2
1 ft.
A = 0,0052 sq. ft.
Diameter of Pipe for 5-day drawdown:
DIA. = SORT[(A x 4) / pi]
0.0814 ft.
0.98 in.
99113
99113POND.xis 2 of 2

State of North Carolina
•'Department of Environment
and Natural Resources
Wilmington Regional Office
James B. Hunt, Jr., Governor
Bill Holman, Secretary
Division of Water Quality
July 25, 2000
Mr. Harry L. Kraly, V.P.
Crown Box Corporation
PO Box 2538
Wilmington, NC 28401
Subject: ACKNOWLEDGMENT OF RECEIPT AND
REQUEST FOR ADDITIONAL INFORMATION
Stormwater Project No. SW8 000630
Federal Express Ground
New Hanover County
Dear Mr. Kraly:
The Wilmington Regional Office received a Stormwater Management Permit Application for
Federal Express Ground on June 19, 2000. A preliminary review of that information has determined that
the application is not complete. The following information is needed to continue the stormwater review:
Delineate all wetlands on site, or note on the plans that none exist.
Provide the project boundary line delineating the 3.19 acres of project area.
On the pond detail the forebay bottom and main pond bottom elevations are interchanged.
On the outlet structure detail the elevations look to be from a previous project. None of the
elevations given are even remotely close to what they should be. Please correct the plans.
5. Please dimension the permanent pool.
6. Please provide the 3:1, Length:Width requirement for the pond.
The forebay has been designed to have approimately 24% of the permanent pool volume.
Please restrict the volume of the forebay to a range of 19-22% of the total permanent pool
volume.
127 Cardinal Dr. Ext., Wilmington, North Carolina 28405 Telephone [phone] FAX [phone]
An Equal Opportunity Affirmative Action Employer 50%, recycled/10%U post -consumer paper

Mr. Kral),
July 25, 2000
Stormwater Project No. SW8 000630
Please note that this request for additional information is in response to a preliminary review. The
requested information should be received by this Office prior to August 25, 2000, 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 or fax your request for a time
extension to the Division at the address and fax number at the bottom of this letter. The request must
indicate the date by which you expect to submit the required information. The Division is allowed 90
days from the receipt of a completed application to issue the permit.
The construction of any impervious surfaces, other than a construction entrance under an approved
Sedimentation Erosion Control Plan, is a violation ofNCGS 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].
Sincerely,
Scott Vinson
Environmental Engineer
RSS/sav: S:\WQS\STORMWAT\ADDINFO\000630.JUL
cc: Wilmington Regional Office
Phillip Tripp, P.E.

TRmP ENGINEERING, P.C.
0 419 Chestnut Street
Wilmington, North Carolina 28401
Phone: [phone] • FAX: [phone]
JUN 15 2000
June 15, 2000
NCDENR
Division of Environmental Management
Water Quality Section
127 Cardinal Drive
Wilmington, NC 28405-3845
Attn: Ms. Linda Lewis
Re: Federal Express Ground
New Hanover County, NC
TE 99113
Dear Linda:
J�N 1 C000
Enclosed please find two (2) sets of plans, one (1) signed original and one (1)
copy of the application form with narrative, one (1) wet detention basin supplement, two
(2) sets of signed sealed calculations and one check for the application fee.
Please review for approval and contact us with any questions or comments.
Thank you.
Sincerely,
Tripp Engineering, P.C.
Charles D. Cazier, E.I.
CDC:dcb
Enc.

Stormwater Narrative
June 15, 2000
Re: Federal Express Ground
New Hanover County
TE 99113
The total drainage area of this project is 3.19 acres. A proposed building of 15,375 sf
will be constructed. 103,932 sf of asphalt and stone access and parking area will be
constructed in addition to 8,437 sf of concrete sidewalk. A complete 127,744 sf of
impervious area brings the total built upon area to 92.0% impervious.
Stormwater runoff will be handled by a stormwater detention pond designed to exceed
the states requirement of the first one inch of runoff. This pond will drain to Smith Creek
with a classification of C-S W.