SW8990406_HISTORICAL FILE_19990624

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SW8 q q 0 t O b
DOC TYPE
❑ CURRENT PERMIT
❑[ APPROVED PLANS
LEI HISTORICAL FILE
❑ COMPLIANCE EVALUATION INSPECTION
DOC DATE
l q qq o 6 2 4
YYYYMMDD

State of North Carolina
D@partment of Environment
and Natural Resources
Wilmington Regional Office
James B. Hunt, Jr., Governor
Wayne McDevitt, Secretary
Division of Water Quality
June 24, 1999
Mr. David Phillips, President
Phillips Nursery, Inc.
1075 Town Creek Road
Leland, NC 28451
fl�FA
IT 0
NCDENR
NORTH CAROLINA DEPARTMENT OF
ENVIRONMENT AND NATURAL RESOURCES
Subject: Permit No. S W8 990406
Bolivia Exxon Station
High Density Stormwater Project
Brunswick County
Dear Mr. Phillips:
The Wilmington Regional Office received a complete Stormwater Management Permit Application for Bolivia
Exxon Station on June 21, 1999. 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 990406 dated June 24, 1999, for the construction of Bolivia Exxon Station.
This permit shall be effective from the date of issuance until June 24, 2009, and shall be subject to the conditions
and limitations as specified therein. Please pay special attention to the Operation and Maintenance requirements
in this pen -nit. 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 thirty (30) days following receipt of this permit. This request must
be in the form of a written petition, conforming to Chapter 150B of the North Carolina General Statutes, and filed
with the Office of Administrative Hearings, P.O. Drawer 27447, Raleigh, NC 27611-7447. Unless such demands
are made this permit shall be final and binding.
If you have any questions, or need additional information concerning this matter, please contact Linda Lewis, or
me at [phone].
Sincerely, &C
Rick Shiver
Water Quality Regional Supervisor
RSS/arl: S:\WQS\S"rORMWAT\PERMIT\990406.JUN
cc: George Haberman, P.E.
Delaney Aycock, Brunswick County Inspections
Linda Lewis
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
t

State Stormwater Management Systems
Permit No. SW8 990406
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
Phillips Nursery, Inc.
Bolivia Exxon Station
Brunswick County
FOR THE
construction, operation and maintenance of a dry detention basin with grassed swale in compliance with the
provisions of 15A NCAC 214 .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 June 24, 2009 and shall be subject to the following
specified conditions and limitations:
I. DESIGN STANDARDS
This permit is effective only with respect to the nature and volume of stormwater described in the
application and other supporting data.
2. This stormwater system has been approved for the management of stormwater runoff as described on page
3 of this permit, the Project Data Sheet. The stormwater control has been designed to handle the runoff from
98,855 square feet of impervious area. This basin must be operated with a grassed swale.
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.

State Stormwater Management Systems
Permit No. SW8 990406
DIVISION OF WATER QUALITY
PROJECT DESIGN DATA SHEET
Project Name:
Permit Number:
Location:
Applicant:
Mailing Address:
Application Date:
Water Body Receiving Stormwater Runoff:
Classification of Water Body:
If Class SA, chloride sampling results:
Basin Depth, feet:
Permanent Pool Elevation, FMSL:
Total Impervious Surfaces, ftz: -1
Offsite Area entering Pond, ft=:
Provided Surface Area, ft':
Required Storage Volume, ft':
Provided Storage Volume, ft':
Temporary Storage Elevation, FMSL:
Controlling Orifice:
Bolivia Exxon Station
SW8 990406
Brunswick County
Mr. David Phillips, President
Phillips Nursery, Inc.
1075 Town Creek Road
Leland, NC 28451
June 21, 1999
Bell Swamp (CFR 18-81-6-1-5)
"C Sw"
n/a
1.35
19.15
98,855
None, per Engineer
8,315 @elevation 18.15
8,081
13,852
19.5
1" � pipe (Drawdown in 3.4 days)
NOTES:
The sideslopes of the basin must be maintained at 3:1 or flatter.
A small permanent pool is provided at the orifice to reduce clogging.
Specified vegetation for the basin is a mixture of Tall Fescue and Bahia grasses.
The seasonal high water table is located approximately 4.5' below the proposes bottom of the system.
A 270' grassed swale located at the overflow from the basin has been provided to meet the required 85% TSS
removal.
3

State Stormwater Management Systems
Permit No. SW8 990406
II. 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 except roads.
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. Semiannual scheduled inspections (every 6 months).
b. Sediment removal.
C. Mowing and revegetation of side slopes.
d. Immediate repair of eroded areas within the basin or swale..
e. Maintenance of side slopes in accordance with approved plans and specifications.
f. Debris removal and unclogging of outlet structure, orifice device and catch basins and piping.
g. Access to the outlet structure must be available at all times.
4. Records of maintenance activities must be kept and made available upon request to authorized personnel
of DWQ. The records will indicate the date, activity, name of person performing the work and what actions
were taken. n
Decorative spray fountains will not be allowed in the stormwater treatment system.
6. 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 pennitted facility, a certification must be received from an appropriate designer for the system installed
certifying that the permitted facility has been installed in accordance with this permit, the approved plans
and specifications, and other supporting documentation. Any deviations from the approved plans and
specifications must be noted on the Certification.
8. A copy of the approved plans and specifications shall be maintained on file by the Pertnittee for a minimum
of ten years from the date of the completion of construction.
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.
10. l-he proposed built -upon area may not exceed the permitted amount of built -upon area at any time.
11. The runoff from all built -upon area on the project must be directed into the permitted stormwater control
system.
12. 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.
0

State Stormwater Management Systems
Permit No. SU18 990406
13. The following items will require a modification to the permit:
a. Any revision to the approved plans, regardless of size.
b. Project name change.
C. Transfer of ownership.
d. Redesign or addition to the approved amount of built -upon area.
e. Further subdivision of the project area.
f. Filling in, altering, or piping of any vegetative conveyance shown on the approved plan.
14. The Director may determine that other revisions to the project should require a modification to the permit.
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.
111. GENERAL CONDITIONS
This pennit 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.
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.
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.
In the event that the facilities fail to perform satisfactorily, including the creation of nuisance conditions,
the Pennittee 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 pennittee 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.
Permit issued this the 24th day of June, 1999.
NOIt ROL�NAEN RONMENTAL MANAGEMENT COMMISSION
Kerr. T. Stevens, Director
Division of Water Quality
By Authority of the Environmental Management Commission
Permit Number SW8 990406

State Stormwater Management Systems
Permit No. SW8 990406
Bolivia Exxon Station
Stormwater Permit No. S W8 990406
Brunswick County
Designer's Certification
I, , as a duly registered
in the State of North Carolina, having been authorized to observe (periodically/weekly/full time) the construction
of the project,
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:
Signature
Registration Number
Date
SEAL
11

State Stormwater Management Systems
Permit No. S W 8 990406
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 outlet/bypass 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.
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.
it. Required drawdown devices are correctly sized and located 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, forebay, or additional BMP's
such as a swale or filter to meet 85% TSS.
14. The overall dimensions of the system, as shown on the approved plans, are provided.
15. Other
cc: NCDBNR-DWQ Regional Office
Delaney Aycock, Brunswick County Building Inspector

DETENTION POND ANALYSIS
PROJECT #: SW8 990406
FILE NAME: S:\WQS\POND\990406.WK1
PROJECT NAME: Exxon Station NC 87 and US 17
REVIEWER
DATE:
Receiving Stream: Town Creek Class: C Sw
Drainage Basin: Index No.
Site Area square feet
Drainage Area 160000.00 square feet needs to be verified
Area in Acres 3.67 acres
IMPERVIOUS AREA
Building
12895.00
square feet
Parking
65970.00
square feet
SW
1120.00
square feet
Gravel
18870.00
square feet
square feet
square feet
TOTAL
1 98855.00
% IMPERVIOUS 61.78%
SURFACE AREA CALCULATION
a rl
24-Jun-99
Chlorides: n/a
Pond Depth: 2.0 TSS:
SA/DA
Req. SA
@18.15 Prov. SA
0.62%
989
8315
square feet
square feet
[From plan Contours]
VOLUME CALCULATION
Perm. Pool Volume=
Req. Forebay Volume= 0
Bottom
17.50
MSL
Provided Volume=
Orifice Invert
18.15
MSL
Percent= ERR
Design Pool 19.50 MSL
Design SA
12206
square feet
[From plan Contours]
Req. Volume
8081�cubic
feet
0.�
Prov. Volume
13852
cubic feet
A @
A
[Elevatio
n=
Avg. Head = 0.64 ft
Flow Q2, cfs 0.080 Area, in 2.99
Flow Q5, cfs 0.032 Area, in' 1.20
No. of Orifices ;Diameter, in. 1.50 Area = 1.767 in2
Q, cfs = 0.047 Drawdown 3.4 days
COMMENTS
Surface Area, Volume and Orifice are within Design Guidelines.

¢D6o
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Linda,
Thanks for your update. I have gotten a couple of calls on this
one, so if you can push it up, I would appreciate it. I always
hate these situations where I have to ask for priority on
projects, because I know the workload that you carry and the very
good job that you do.
As far as I know, the Ocean Ridge lot in Carteret County is no
longer an issue. I am not aware that anyone has taken issue with
our position on sticking with the low density option. I really
appreciate all the information that you provided to me on that
project as it made it very clear what we needed to do.
Tommy
Linda Lewis wrote:
> Dear Tommy:
> The Exxon in Bolivia was received on April 13, 1999 and reviewed on
> June 14, 1999. Three items were requested: a vegetation plan for the
> dry detention system, dimensions for the basins, and a wetland
Linda Lewis -- 1 -- Thu, 24 Jun 1999 08:31:33

J
> delineation, or a note that no wetlands exist on site.
> The engineer submitted the required information on June 21, 1999
> have not had a chance to review it for completeness yet. Say the
> word and it will be done today.
> Sincerely, Linda Lewis
Linda Lewis
-- 2 -- Thu, 24 Jun 1999 08:31:33

COASTAL ENGINEERING
& SURVEYING, INC.
934 West Kitty Hawk Road
KITTY HAWK, NC 27949
Phone [phone] Fax [phone]
IAOIXICIml"9 )i05-I(P+
JOB D3EA, �
SHEET NO. OP
CALCULATED BY- 8T� DATE
CHECKED By
DATE

Coastal Engineering & Surveying, Inc.
934 West Kitty Hawk Road
Entrance #3
Kitty Hawk, North Carolina 27949
Phone [phone]
Fax [phone]
To: NCDENR
Division of Water Quality
Wilmington Regional Office
127 Cardinal Drive Extension
Wilmington, NC 28405
We are sending you the following:
❑ Shop Drawings ® Prints
❑ Letter ❑ Specs
❑ Change Order ❑ Plans
JUN 2 1 1999
LETTER OF TRANSMITTAL
Date: 06/18/99 1 Project No: P99322
Attention: Mrs. Linda Lewis
Re: Proposed Exxon Station
Bolivia, NC
Via: FedEx-Priority Overnight
❑ Samples
❑ Payment Application
® Calculations
Copies
Date
No.
Description
2
06/18/99
6
2 Sets of Site Plan, Erosion Control Plan, & 500'
Turn Lane Plan
1
06/17/99
1
Calculation sheet with basin dimensions & volumes
These items are transmitted as checked below:
® For Approval ❑ Reviewed
❑ For Your Use ❑ Reviewed as Noted
® As Requested ❑ Revise & Resubmit
® For Review and Comment ❑ Returned No Action
❑ Prints Returned After Loan To Us
Remarks:
These plans are submitted in response to your letter dated 06/14/99.
Copies:
❑ Architect ® Mr. Gene Hammond (United Energy, Inc.)
❑ Engineer ❑ Owner
❑ Contractor ❑Owner
Signed:

C®a4 a
June 18, 1999
ENGINEERING & SURVEYING, INC.
Ms. Linda Lewis
North Carolina Department of
Environment & Natural Resources
Wilmington Regional Office
Division of Water Quality
127 North Cardinal Drive
Wilmington, North Carolina 28405
RE: Proposed Exxon Station, Bolivia, Brunswick County
Stormwater Management Plan
Request for Additional Information
Dear Ms. Lewis:
This letter is in response to your request for additional information dated June 14, 1999.
Please note we have provided the following information:
1. A vegetation plan specific to the Extended Dry Detention Basin is located on
Sheet 2 of 3, Soil Erosion & Sediment Control Plan.
2. A separate calculation sheet with the basin dimensions and storage volumes.
3. A note added stating that no existing or proposed wetlands exist on the site on
Sheet 1 of 3, Site Plan.
Please review this information and do not hesitate to call if you have any questions or
require additional information.
Sincerely,
Coastal Engineering & Surveying, Inc.
eorge J Zaberman, P.E.
Senior Engineer/Project Manager
3915 Welch Street o P.O. Box 1129 o Kitty Hawk, NC 27949 0 [phone]

Department of Environment
and Natural Resources
Wilmington Regional Office
James B. Hunt, Jr., Governor
Wayne McDevitt, Secretary
Division of Water Quality
June 14, 1999
Mr. David Phillips, President
Phillips Nursery, Inc.
1075 Town Creek Road
Leland, NC 28451
NCDENR
NORTH CAROLINA DEPARTMENT OF
ENVIRONMENT AND NATURAL RESOURCES
.Subject: ACKNOWLEDGEMENT OF RECEIPT AND
REQUEST FOR ADDITIONAL INFORMATION
Stormwater Project No. SW8 990406
Exxon Station
Brunswick County
Dear Mr. Phillips:
The Wilmington Regional Office received a Stormwater Management Permit Application for Exxon
Station on April 13, 1999. 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 a vegetation plan specific to the dry detention basins. The erosion control
seeding schedule shown on the plan is not sufficient to address this design requirement.
Please provide the dimensions of the bottom of each basin.I am unable to verify the storage
in the system until this is provided.
Delineate all wetlands on site, or note on the plans that none exist.
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 July 14, 1999, or the application will be
returned as incomplete. The return of a project will necessitate resubmittal of all required items, including
the application fee. The Division is allowed 90 days from the receipt of a completed application to issue the
permit.
The construction of any impervious surfaces associated with this project prior to receipt of the
stormwater permit is considered a violation of NCGS 143-215.1, and is subject to enforcement action.
If you have any questions concerning this matter please feel free to call me at [phone].
Sincerely,
Ms. Linda Lewis
Environmental Engineer
RSS/arl: S:\WQS\STORMWAT\ADDINFO\990406.JUN
cc: Linda Lewis
George Haberman, P.E.
127 Cardinal or. Ext-, Wilmington, North Carolina 28405 Telephone [phone] FAX [phone]
An Equal Opportunity Affirmative Action Employer 50 % recyc1ed/10 % post -consumer paper

a
t�Q�I G�1►J.I ��J�f:�Z�J/S�t.11I�
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):
Phillips Nursery, Inc.
J .
2. Print Owner/Signing Official's name and title (the person who is legally responsible for the facility and
its compliance):
David Phillips, President.
3. Mailing Address for person listed in item 2 above:
1075 Town Creek Road
CitY Le1and State: NC 28451
Telephone Number. ( 800 1 8 21- 5 71 1
4. Project Name (subdivision, facility, or establishment name - should be consistent with project name on
plans, specifications, letters, operation and maintenance agreements, etc.):
Proposed Exxon Station
S. Location of Facility (street address):
Intersection of US 17 and NC 87
Ody: Towncreek Township Cormty Brunswick
6. Directions to facility (from nearest major intersection):
The site is located.a.t the intersection of US_ 17 and NC 87,
approximately 15 miles south.of Wilmington on US 17.
7. Latitude 340 0 7' 5 6. 3Lorghd& 780 5' 4 8. 6" of facility
8. , Contact person who can answer questions about the facility
Georqe Haberman
blame Coasn, Engineering Telephone Number. f '252 2(01 4 15 1
II. PERMIT INFORMATION: .
.1. " Specify whether project is (check one): - X ' New Renewal Modification
2:. If this application is being submitted asthe result of a renewal or modification to an existing permit, list
" the existing permit camber and its issue date (if known)
Form SVM-101 April 1998 Page 1 of 4

3. Specify the type of project (check one):
_Low Density . X High Density.. , _Redevelop General Permit _Other
4. Additional Project Requirements (check, applicable blanks):
_CAMA Major X Sedimentation/Erosion Control 404 Permit
III. PROJECTINFORMATION
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.
Run off from impervious surfaces.will sheet flow on concrete and asphalt
paving to one of two interconnected grass dry detention basins. -The '1"
rainfall event will be contained and releasedin.approx. 2'da'ys into. i.
a 370' grassed lined Swale.' _
2. Stormwater runoff from this project drains to the CLjP� File River basin
3. Total Project Area 3.67 acres `` 4. .ProjectBt0UponAre a ' 53 . qo
5. How many drainage basins does the project have? 1
6. Complete the following information for each drainage basin If there are more than two drainage basins in
the project, attach an additional sheet with the information for each basin provided in the same format as.
below.
00"if 6ffiratiOn-040M
Uraiiia e)Basut 2zoom,�-e
Basm2
Receiving Stream Name
Bell Swam
Receiving Stream Class
Draina a -Basin Area
160 , 000 sf
ExistingImpervious* Area
0
Proposed Ira ervious Area
98,855 s f
% Impervious* Area (total)
53
On -site Buildings
12,895 s f
On -site Streets
0
On -site Parking
65,970 s f
On -site. Sidewalks
1,120 s f
Other on -site
18,870 s f
Off -site
0
Total: E= 8 5
Impervious area is defined as the built upon area including, but not limited to, buildings, roads, parking
- areas, sidewalks, gravel areas, etc.
7. How was the offsite impervious area listed above derived? N/A.
IV. DEED RESTRICTIONS AND PROTECTIVE COVENANTS
Deed restrictions and protective covenants are required to be recorded for all low density projects and all
subdivisions prior to the sale of any lot. ;Please see Attachment A for the specific items that must be recorded.
Form SWU-101 April 1998 Page 2 of 4

By your signature below, you certify that the recorded deed restrictions and protective covenants for this project
shall include all the items required by the permit, 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. AGENT AUTHORIZATION
If you wish to designate submittal authority to another individual or firm so that they may provide
information on your behalf, please complete this section:
Designated agent (individual or6mi) Ctiastal Engineering & Surveying, Inc. -
IvfaOrtgAddre� P.0 Box 1129
y Kitty Hawk State: NC TP' 27949%
phom ( 252 1 261-4151 Fax (. 252 L 261-1333
VI. SUBMITTALREQUIRIIbIENIS .
This application package will not be accepted by the Division of Water Quality unless all of the applicable . .
items are included with the submittal
1. Please indicate that you have provided the following required information by signing your initials in the
space provided next to each item
Applicant Initials
• Original and one copy of the Stormwater Management Permit Application Form
• One copy of the applicable Supplement Form(s) for each BMP (see Attachment A)
• Permit application processing fee (see Attachment A)
Two copies of plans and specifications including:'
• 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 6r 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, parking, cul-de-sacs, sidewalks, and curb and gutter
- Wetlands delineated, or a note on plans that none exist
- Existing drainage (including off -site), drainage easements, pipe sizes, runoff calculations
- Drainage basins delineated
- Vegetated buffers (where required) '
VII. APPLICANTS CERTIFICATION
I, (print type name of person fisted in General Information, item 2) David Phi 3 l:i p s,
t
certify that the information included on this, permit application form is correct, that the project will be
constructed in conformance with the approved plans, that the deed restrictions in accordance with'Attachment
A of this form will be recorded with all required permit conditions, and that to the best of my knowledge the
proposed project complies with -the requirements of 15A NCAC ZH .1000.. '
g5t1P President
Form SWU-101 April 1998 Page 3 of 4 '

ATTACHMENT A
1. Deed Restriction Language
The following statements must be recorded for all low density projects and for all projects that involve the
subdivision and selling of lots or outparcels:
1. No more than _ square feet of any lot, including that portion of the right-of-way between the
edge of pavement and the front lot line, shall be covered by impervious structures including
asphalt, gravel, concrete, brick," stone, slate or similar material but not including wood decking or
the surface of swimming pools. This covenant is intended to insure continued compliance with the
stormwater permit issued by the State of North Carolina. The covenant may not be changed or
deleted without the consent of the State..
2. No one may fill in, pipe, or alter arty roadside swale except as necessary to provide a minimum
driveway crossing.
NOTE: If lot sizes vary significantly, the owner/developer must provide an attachment listing each lot
number, sue and the allowable built -upon area for each lot.
For commercial projects that have outparcels or future development the following statements must also be." -
recorded:.
3. The connection from the outparcel or future area into the stormwaater system'must be made into the
forebay such that short-circuiting of the system does not occur. '
4. All built -upon area from the outparcel or future development must be directed into the permitted
stormwater control system.
5. Built -upon area in excess of the permitted amount will require a permit modification prior to
construction
For curb outlet systems, the following statement in addition to items 1 and 2 above must be recorded:
6. No one 'may pipe, fill in or alter any designated 100 foot long grassed swale used to meet the
requirements of NCAC 2H .1008(g).
2. Supplement Forms
The applicable supplement form(s) listed below must be submitted for each BMP specified for this project
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
FormSWU-107 Underground Infiltration Trench Supplement .
Form SWU-108 Neuse River Basin Nutrient Management Strategy Supplement ;
3. Permit Application Fees (check made payable to NCDENR and submitted to the appropriate Regional
Office)
Type of Permit New, Modification or
Late Renewal ;
Low Density $225: .
High Density $385
Other $225
Directors Certification $350
General Permit $50
Form SWU-101 April 1998 Page 4 of 4

C®Q.l14al ENGINEERING & SURVEYING, INC.
March31, 1999 /V
Ms. Linda Lewis
North Carolina Department of
Environment & Natural Resources
Division of Water Quality
127 North Cardinal Drive
Wilmington, North Carolina 28405
RE: Proposed Exxon Station, Bolivia, Brunswick County
Storm Water Narrative
Dear Ms. Lewis:
E C E I V E D
0
APR 131999
PROD #Sc..,Wo 40o
This report represents the results of our analysis and subsequent design for controlling
sediment and storm water at the above -mentioned site both during and after construction.
The storm water runoff from all impervious surfaces will sheet flow over asphalt,
concrete, and compacted aggregate to two Extended Dry Detention Basins. The
Extended Dry Detention Basins are interconnected by an 2-12" FIDPE pipes with zero
slope (inverts=18.15'). Both basins have the same general characteristics: 3:1 side
slopes, bottom elevation of 17.50', maximum storage elevation of 19.50', 0.50' of
freeboard, and a top of berm elevation of 20.00'. The total impervious surfaces
associated with this project are 98,855 sf. This total consists of: 12,895 sf of roofs
(buildings & canopies including overhangs), 25,400 sf of concrete drives, 1,120 sf of
concrete sidewalks, 40,570 sf of asphalt drives & parking, and 18,870 sf of compacted
aggregate base course drives & parking. The total drainage area for our basins is 160,000
sf (61,145 sf of grass lawns). We have provided maximum storage volumes of 9,480 cf
in Basin #1 and 8,840 cf in Basin 42 for a total combined maximum storage volume of
18,320 cf. This storage volume is achieved in 2.00' of storage (17.50' to 19.50') with
0.50' of freeboard (top of berm=20.00'). This maximum storage volume corresponds to
1" of rainfall overall surfaces.
The detention basins will have to be considered as Extended Dry Detention Basins due to
site soil and groundwater conditions. We are required to retain the 1" event, or 13,335 cf.
We have provided 18,320 of of storage, which accounts for an additional 20% of our
required volume for sediment storage. Attached is a soil report prepared by Samir
Bahho, P.E. and a corresponding laboratory report prepared by CME Associates, Inc. for
our site. According to Mr. Bahho's report, the groundwater table resides at
approximately 6.00' below existing grade, or elevation 13.00'. The bottoms of our basins
are at elevation 17.50', or approximately 4.50' above the groundwater table. Therefore, it
is reasonable to assume that our basins will only be wet during runoff producing events.
Also included in these reports, are the descriptions and characteristics of soil stratum to a
3915 Welch Street a P.O. Box 1129 9 Kitty Hawk, NC 27949 9 [phone]

lk 4
depth of 7.00'. There are two to three different soil stratums described, depending on the
boring location. They all are described as having some "clay" content and are pertinent
when considering the average hydraulic conductivity. According to CME's report, the
average permeability is 3.15 x 10-7 cm/sec, or 4.46 x 10-4 in/hr.. According to
NCDENR Administrative Code Section 15A NCAC 21-I.1000, to be considered for
infiltration, soils must have a minimum hydraulic conductivity of 5.20 x 10-1 in/hr..
Therefore, it reasonably follows that the soils on our site do not qualify for infiltration.
Considering the ground water table elevation and hydraulic conductivity rates, we must
consider our basins as Extended Dry Detention Basins.
The storm water runoff collected by the swales and detention basins will be slowly
released by a control stricture. This structure has several components, with the main
component being an 18" HDPE riser pipe. This pipe will be wrapped in filter fabric and
surrounded by AASHTO #4 rock. The AASI-ITO 44 stone will conceal and protect the
pipe, as well as, filter sediment. The riser pipe will have 1-1" diameter orifice at
elevation 18.15'. This orifice provides draw down of the 1" storm in approximately 2
days. These values are consistent with current storm water regulations. In addition to
these control devices, a rip rapped overflow spillway has been provided for rainfall
events in excess of the storage capacity of the extended dry detention basins at elevation
19.50'. This allows for 0.50' of freeboard below the berm, which is at elevation 20.00'.
These extended dry detention basins provide 50% total suspended solids removal.
Therefore, we have provided a 370' grassed lined Swale(] 00'/per AC of drainage area) to
discharge into to. This will provide 35% total suspended solids removal, for a total of
85% "CSS removal. The orifice outlet pipe and the overflow spillway empty into a 370'
grass lined swale, which conveys storm water under N.C. 87 in route to Bell Swamp
Creek.
In addition to providing storm water control measures, the extended dry detention basins
will act as sediment collection basins during construction activities. After the completion
of construction and stabilization of all soils, the basins will be restored to their original
design dimensions. All sediment will be removed and the basins will be stabilized to
their design specifications. Please refer to the attached Extended Dry Detention Basin
Maintenance Requirements.
We feel we have provided the best possible solution for sediment and stormwater control
for this particular site. We, the developer and owner, all recognize that this facility must
be adequately maintained to guarantee proper function. Please review the enclosed items
and do not hesitate to call if you have any questions or require additional information.
Sincerely,
Coastal Engineering & Surveying, Inc.
eorge!l. llaberman, P.E.
/IfSenior Engineer/Project Manager

COASTAL ENGINEERING ,we Ml- llr✓ir�o c�lE �y
& SURVEYING, INC. SHEETND. I OF
934 West Kitty Hawk Road CA=LATEDBY
KITTY HAWK, NC 27949 DAB
Phone [phone] Fax [phone] CHECKED BY DATE-' 3/ F9
E
C

JOB P7-737z- t)AJrn-in ajf,:8�
COASTAL ENGINEERING & SURVEYING, INC. SHEET NO. of
934 West Kitty Hawk Road CALCULATED BY— l3ni DATE
KITTY HAWK, NC 27949
Phone [phone]' Fax [phone] CHECKED BY DATE
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JOB 727 577- aAlIT15D &11=� COY
COASTAL ENGINEERING
& SURVEYING, INC. SHEET NO. OF
934 West Kitty Hawk Road CALCULATED BY *7j DATE
KITTY HAWK, NC 27949 _jW#
Phone [phone] Fax [phone] CHECKED By DATE
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COASTAL ENGINEERING
& SURVEYING, INC.
934 West Kitty Hawk Road
KITTY HAWK, NC 27949
Phone [phone] Fax [phone]
0
SHEET NO. 4 1 OF
CALCULATED BY 5 N DATE _
CHECKED BY DATE 3 3/ 95
c m e:, ,

COASTAL ENGINEERING .
& SURVEYING, INC.
934 West Kitty Hawk Road
"KITTY HAWK, NC 27949
Phone [phone] . Fax [phone]
nnBne�i ad. �+q:� ad.n
CALCULATED Br 8m
CHECKED BY —�
OF
DATE a3 si 9
DATE 3� 4

396 URBAN HYDROLOGY
TABLE 6.6
Typical C Coefficients for 5- to 10-yr
Frequency Design'
RUNOFF
DESCRIPTION OF AREA
COEFFICIENTS
Business
Downtown areas
0.70-0.95
Neighborhood areas
0.50-0.70
Residential
Single-family areas
0.30-0.50
Multiunits, detached
0.40-0.60
Multiunits, attached
0.60-0.75
Residential (suburban)
0.25-0.40 -
Apartment dwelling areas
0.50-0.70
Industrial
Light areas
0.50-0.80
Heavy areas
0.60-0.90
Parks, cemeteries
0.10-0.25
Playgrounds
0.20-0.35
Railroad yatd areas
0.20-0.40
Unimproved areas
0.10-0.30
Streets
Asphalt
0.70-0.95
Concrete
0.80-0.95
Brick
0.70-0.85
Drives and walks
0.75-0.85
is Roofs
0.75-0.95 "
Lawns, Sandy Soil
Flat, 2%
0.05-0.10
Average, 2-7%
0.10-0.15
Steep, 7%
0.15-0.20
Lawns, Heavy Soil
Flat, 2%
0.13-0.17
Average, 2-7%
0.18-0.22
Steep, 7%
0.25-0.35
• Viessman et al., 1989.
inversely related to the rainfall intensity,
the kinematic wave equation
should be used. Since t. by Eq. (6.6) is proportional to the (unknown)
rainfall intensity, an iterative solution is
necessary, combining Eq. (6.6)
with the IDF curves. Such an iterative solution
is easily accomplished, as
will be illustrated in Example 6.6.

Appendices
0.2 �i—
i,
0.1
5 10 20 40 60
Minutes
Duration
Figure 8.03b Rainfall intensity duration curves —Wilmington.
Hours
5 10. 20 40 60 2 3 4 6 8 12 18 24
Minutes Hours
Duration
Figure 8.03c Rainfall intensity duration curves —Hatteras.
8.035

370' Drainage Swale-2 Yr. 5 Min. Storm
Worksheet for Triangular Channel
Worksheet 370' Drainage Swale-2 Yr. 5 Min. Storm
Flow Element Triangular Channel
Method Manning's Formula
Solve For Channel Depth
Input Data
Mannings Coefficient 0.030
Channel Slope 0.000676 ft/ft
Left Side Slope 3.000000 H : V
Right Side Slope 3.000000 H : V
Discharge 11.40 cfs
Results
Depth
1.81
ft
Flow Area
9.81
ftz
Wetted Perimeter
11.44
ft
Top Width
10.85
ft
Critical Depth
0.98
ft
Critical Slope
0.017854
ft/ft
Velocity
1.16
ft/s
Velocity Head
0.02
ft
Specific Energy
1.83
ft
Froude Number
0.22
Flow is subcritical.
03/31/99 FlowMaster v5.15
01:32:37 PM Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 06708 [phone] Page 1 of 1

370' Drainage Swale-10 Yr. 5 Min. Storm
Worksheet for Triangular Channel
Project File f:\drawings\projects\p99322-united energy\bollvia.tm2
Worksheet 370' Drainage Swale-10 Yr. 5 Min. Storm
Flow Element Triangular Channel
Method Manning's Formula
Solve For Channel Depth
Input Data
Mannings Coefficient 0.030
Channel Slope 0.000676 ft/ft
Left Side Slope 3.000000 H : V
Right Side Slope 3.000000 H : V
Discharge 15.95 cfs
Results
Depth 2.05 ft
Flow Area 12.62 ft'
Wetted Perimeter 12.97 ft
Top Width
12.31
ft
Critical Depth
1.12
ft
Critical Slope
0.017072 ft/ft
Velocity
1.26
ft/s
Velocity Head
0.02
ft
Specific Energy
2.08
ft
Froude Number
0.22
Flow is subcritical.
03/31/99 FlowMaster v5.15
01:29:29 PM Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 06708 [phone] Page 1 of 1

sreem\lul
Orifice
dimrlele,
WWII
FIGURE 9.3 '1'hr drecluylnrl ll nlit,,. rrrtn lun(ra'tn.
which is rclerICE] lu as ToricrIIi's rquatiorI.'I'lic discharge Itoough an orifice
can he calculausl if" the area ol, the orifice A is soffit it my small with respect
to the size of the coutaiucr, in which case the varialion of h Iion1 the bottom
to the top of Ihr, opening is negligible. Vert: the ve'locily of tile. flow
throughout .a can be, considered couslaill and the disch:uge, at least
theoretically', is
U=.411=.1 2gh
Esperinu;ntal rl :suns have shown lhal the actual discharge through all
urilice is sutnewh:u less Ihcul the discharge that would be ubtaiued
Ihcurcticall}'.'Ihcn'. arc hvo reasons fin' Ihis disaepanc.y. Pirsl, the size of file
,µa is souls:what snlallcc IliaII the size of the opcui ug because oh die cliect oh
the Cut vaunv; of the appluarhiuystrcanl lilies ill the container, as depicted in
Figure 9.3. The n:ua'owrst portion of the jet stream is called the "ve.na
cuutiacta." Another cause fin' tile rv;ductiou of discharge is the viscous shear
effect between the edge oh the urilice and the water. This causes a loss of
velocity :wound the edges, as shown in Figure 9.4, with the corresponding
Elect ease of of inch arge.'I•he cunt bi nrtl rllecl of these two factors gives rise to a
discharge roe/jicirnl, c, whose, values, based oil many experiments with small,
ruuud, and square orifices discharging into air, range from 0.6 to 0.68. The
exprrimcutal results Indicate that the discharge cuelhcient Is larger with
snlallerdiantrlers and larger heads. Including the discharge cucflicient c into
the theoretical equation shown above., one obtains the discharge formula Ibr
Iluw through upeuiugs under pressure in the form of
11 = cA 2gh (9.2)
4
a
0.
0.
0.1
a.;
0.7
0.61
off rin -Ild Strin iron rl
FIGURE 9.4 Vchxiiy leoohu-
Inrn due to 6.1141. sllnar lines al
the urilice edge.
o R 16 20 24
Ild
FIGURE 9.5 Uisrhmgc nn'Iliricnla lilr shun Illlws,

- 8-
receive
Soil Report
Proposed Gas Station Site in Bolivia, Brunswick County
North Carolina
A visit was made to the site of the proposed gas station on February 15, 1999. The
purpose of the visit was to conduct soil bores, determine soil types and water table
elevation as well as collecting samples for laboratory tests.
The property is located at the southwest comer of the intersection of US 17 and NC
Highway 87. The area of the property is approximately 4.29 Acres. About % of the
property consists of cleared flat and cultivated land. ' The remaining part bordering the
southeastern property lines is flat wooded with medium density.
The top surface soil for a depth of approximately one -foot in the cleared area consists of
brownish silt and clay silt. The top 4" to 8" of the soil in the wooded area consists of
brown -black topsoil with organic materials and roots.
Soil Bores:
Three bores were drilled to depth of seven feet in the area of the proposed storm water
ponds. The purpose of the bores was to determine type of soils; to collect soil samples
for hydraulic conductivity, void ratio and density tests. The bores were also intended to
determine the water table elevation in the area. Bores were stopped at seven feet.
In bore #1 and 3 water table was found at 6.3'-6. 5' measured from the adjacent ground.
No water was found in bore #2 at 7' depth. A survey was conducted the. following day .
to locate the three bores and tie them to grid horizontally and vertically (see location
survey). Attached to this report is a sketch showing the approximate bore locations.
Soil Description:
The top P-2' from the surface consists of brownish silt and clay silt.
Depth 2'-7' consists of orange sandy clay with sand content increasing with depth.
Attached to this report are bore logs and water table elevation projections.
Laboratory Tests:
A total of 4 samples were collected and sealed. Samples were taken to a Geotechnical
Laboratory for testing. A proctor, hydraulic conductivity (permeability) and void ratio
tests were conducted.

Test results:
Maximum dry density
Optimum moisture content
Average hydraulic conductivity
Porosity
116.9 lb/cuft
13. %
3.15x10 �cm/sec.
0.34 n
Attached to this report are the results of the tests and proctor test report.
6�-2 dwv
Samir W. Bahho, P.E.,
4612'Kaplan Drive
Raleigh, North Carolina 27606
19

w
Borg Locg400s
_ems

CME Associates, Inc.
Construction Materials Evaluation
February 26, 1999
Samir Bahho
4612 Kaplan Drive
Raleigh, North Carolina 27606
Ref.:. Summary of Laboratory Services
Exxon Site - Brunswick County
CME Project No.: 8632S-01-0299
Dear Mr. Bahho:
CME Associates, Inc. (CME) appreciates the opportunity to provide Laboratory services
on the above mentioned project. A standard proctor (ASTM D 698) and a flexible wall
permeability test (ASTM D 5084) were performed on a soil sample provided by Mr. Bahho. The
samples was a mixture of three samples labeled B-1 at 5 feet and 7 feet and B-2 at 4 feet. The
results of our tested are summarized in the table below:
Table 1 - Summary of Lab tory Test Results
Maximum
Optimum
Specimen
Specimen
Degree of
Average
Porosity .
Dry
Moisture
Dry
Moisture
Compaction
Permeability
(n)
Density
Content
Density
Content
(%)
(cm/s)
C
%
C
116.9
13.0
111.3
13.5
95.2
3.15x10-7
34
The proctor curve is attached to this report.
CME appreciates the opportunity to provide laboratory services on this project. If you
have any questions or if we can be of further assistances please contact the undersigned.
Respectfully submitted,
CME ASSOCIATES; INC.
M.�.�
Miguel R Frisco
Project Manager
enclosures: Proctor Curve (1 of 1)
CIt-e—
"'Lood,.E.T.
Branch Manager
1510 Mechanical Blvd. Garner, NC 27529 [phone] FAX [phone]

PROCTOR.TEST REPORT
Curve No.: Prctr 1
Project No.: 86325-01-0299
Project: Brunswick Co. Exxon Site
Location:
Elev/Depth:
Remarks:
Boring 01 5'& 7' Boring #2 4'
MATERIAL DESCRIPTION
Description: Tan/Brown sandy clay
Classifications: USCS: PASHTO:
Nat. Moist. % Sp.G.
Liquid Limit - Plasticity Index.
140
130
120
u
a 110
T
c 100
a
L
l
Q
T
m
70
0
TEST RESULTS
Maximum dry density = 116.9 pcf
Optimum moisture.= 13.0 %
5 10 15 20
Water content, %
CME ASSOCIATES, INC,
Date: 02-22-1999
25 30 35 40
Plate No. Proctor 1