SW8980434_HISTORICAL FILE_20000407

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SW8 9 $ p` 43`
DOC TYPE
❑ CURRENT PERMIT
❑ APPROVED PLANS
HISTORICAL FILE
❑ COMPLIANCE EVALUATION INSPECTION
DOC DATE
200o Oy01
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
April 7, 2000
Mr Kenneth A Kirkman, Attorney in Fact
Bald Head Island Limited
PO Box 3069
Bald Head Island, NC 28461
Q0
NCDENR
NC GROUNA r)EPARTMENr or
ENVIRONMENT AND N. URA RESOURCE$
Subject Permit No SW8980434MOD
Row Boat Row Subdivision
High Density Subdivision Stormwater Project
Brunswick County
Dear Mr Kirkman
The Wilmington Regional Office received a complete Stormwater Management Permit Application for Row Boat Row
Subdivision on April 6, 2000 Staff review of the plans and specifications has determined that the project, as proposed,
will comply with the Stormwater Regulations set forth m Title 15A NCAC 2H 1000 We are forwarding Permit No SW8
980434MOD, dated April 7, 2000, for the construction of the project, Row Boat Row Subdivision
This permit shall be effective from the date of issuance until April 7, 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 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 Scott Vinson, or me at
[phone]
Sincerely,
l
Rick Shiver
Water Quality Regional Supervisor
RSS/ sav S \WQS\STORMWAT\PERMIT\980434 APR
cc Perry Davis
Delaney Aycock, Brunswick County Inspections
Scott Vinson
Wilmington Regional Office
Central Files
127 Cardinal or 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 SW8980434MOD
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
Bald Head Island Limited
Row Boat Row Subdivision
Brunswick County
FOR THE
construction, operation and maintenance of one infiltration trench system and three infiltration basins 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 tlus permit
Taus permit shall be effective from the date of issuance until April 7, 2010 and shall be subject to the following
specified conditions and limitations
L 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
pages 3 thru 6 of this permit, the Project Data Sheets The subdivision is permitted for 18 lots, see Exhibit
A for the allowable built -upon area for each lot and common area
Approved plans and specifications for tlus project are incorporated by reference and are enforceable parts
of the permit

State Stormwater Management Systems
Permit No SW8 980434MOD
DIVISION OF WATER QUALITY
PROJECT DATA SHEET
Project Name
Row Boat Row Subdivision, Drainage Basin #1
Permit Number
SW8 980434MOD
Location
Brunswick County
Applicant
Mr Kenneth A Kirkman, Attorney in Fact
Mailing Address
Bald Head Island Limited
PO Box 3069
Bald Head Island, NC 28461
Application Date
April 6, 2000
Name of Receiving Stream / Index #
Bald Head Island Manna / 18-88-8-5
Classification of Water Body
"SC"
If Class SA, chloride sampling results
n/a
Design Storm
V
Infiltration Trench Depth, feet
250
Drainage Area, acres
1 15
Total Impervious Surfaces, ft2
23,958
Offsite Area entering Trench, ft2
none, per Engineer
Trench Dimensions, L x W x H, ft
420' x 2 5' x 2 5'
Required Storage Volume, ft'
2,006
Provided Storage Volume, ft'
2,287
Top of Storage Elevation, FMSL
750
Controlling Orifice
18" d) inlet grate overflow (invert 7 50 FMSL)
Type of Soil
Sand, Newhann & Fripp
Expected Infiltration Rate
20 0 inches per hour
Seasonal High Wate Table
2 0 FMSL
Time to Draw Down
10 hour
3

State Stormwater Management Systems
Permit No SW8980434MOD
DIVISION OF WATER QUALITY
PROJECT DATA SHEET
Project Name
Row Boat Row Subdivision, Drainage Basin #2
Permit Number
SW8 980434MOD
Location
Brunswick County
Applicant
Mr Kenneth A Kirkman, Attorney in Fact
Mailing Address
Bald Head Island Limited
PO Box 3069
Bald Head Island, NC 28461
Application Date
April 6, 2000
Name of Receiving Stream / Index #
Cape Fear River / 18-(87 5)
Classification of Water Body
"SA"
If Class SA, chloride sampling results
n/a
Design Storm
1 5"
Infiltration Basin Depth, feet
100
Bottom Elevation, FMSL
900
Drainage Area, acres
091
Total Impervious Surfaces, ft2
13,939
Offsrte Area entering Basin, ft2
none, per Engineer
Basin Dimensions, L x W x H, ft
250' x 5 0' x 1 0' (bottom dimensions)
Required Storage Volume, ft3
1,816
Provided Storage Volume, ft3
2,000
Top of Storage Elevation, FMSL
1000
Type of Soil
Sand, Newhann & Fnpp
Expected Infiltration Rate
20 0 inches per hour
Seasonal High Wate Table
2 0 FMSL
Time to Draw Down
10 hour
0

State Stormwater Management Systems
Permit No SW8 980434MOD
DIVISION OF WATER QUALITY
PROJECT DATA SHEET
Project Name
Row Boat Row Subdivision, Drainage Basin #3
Permit Number
SW8 980434MOD
Location
Brunswick County
Applicant
Mr Kenneth A Kirkman, Attorney in Fact
Mailing Address
Bald Head Island Limited
PO Box 3069
Bald Head Island, NC 28461
Application Date
April 6, 2000
Name of Receiving Stream / Index #
Cape Fear River / 18-(87 5)
Classification of Water Body
"SA"
If Class SA, chloride sampling results
n/a
Design Storm
1 5"
Infiltration Basin Depth, feet
100
Bottom Elevation, FMSL
700
Drainage Area, acres
070
Total Impervious Surfaces, ft2
13,939
Offsite Area entering Basin, ft2
none, per Engineer
Basin Dimensions, L x W x H, ft
240' x 5 0' x l 0' (bottom dimensions)
Required Storage Volume, ft3
1,759
Provided Storage Volume, ft3
1,920
Top of Storage Elevation, FMSL
800
Type of Soil
Sand, Newhann & Fnpp
Expected Infiltration Rate
20 0 inches per hour
Seasonal High Wate Table
2 0 FMSL
Time to Draw Down
10 hour
5

State Stonnwater Management Systems
Permit No SW8980434MOD
DIVISION OF WATER QUALITY
PROJECT DATA SHEET
Project Name
Row Boat Row Subdivision, Drainage Basin #4
Permit Number
SW8 980434MOD
Location
Brunswick County
Applicant
Mr Kenneth A Kirkman, Attorney in Fact
Mailing Address
Bald Head Island Limited
PO Box 3069
Bald Head Island, NC 28461
Application Date
April 6, 2000
Name of Receiving Stream / Index #
Cape Fear River / 18-(87 5)
Classification of Water Body
"SA"
If Class SA, chloride sampling results
n/a
Design Storm
1 5"
Infiltration Basin Depth, feet
1 00
Bottom Elevation, FMSL
750
Drainage Area, acres
065
Total Impervious Surfaces, ft2
9,583
Offsite Area entering Basin, ft2
none, per Engineer
Basin Dimensions, L x W x H, ft
160' x 5 0' x 1 0' (bottom dimensions)
Required Storage Volume, ft'
1,255
Provided Storage Volume, ft'
1 280
Top of Storage Elevation, FMSL
850
Type of Soil
Sand, Newhann & Fnpp
Expected Infiltration Rate
20 0 inches per hour
Seasonal High Wate Table
2 0 FMSL
Time to Draw Down
10 hour
I

State Stormwater Management Systems
Permit No SW8 980434MOD
II SCHEDULE OF COMPLIANCE
No homeowner/lot owner/developer shall fill in, alter, or pipe any drainage feature (such as swales)
shown on the approved plans as part of the stormwater management system without submitting a revision
to the permit and receiving approval from the Division
The permittee is responsible for verifying that the proposed built -upon area does not exceed the allowable
built -upon area Once the lot transfer is complete, the built -upon area may not be revised without
approval from the Division of Water Quality, and responsibility for meeting the built -upon area limit is
transferred to the individual property owner
The following items will require a modification to the permit
Any revision to the approved plans, regardless of size
Project name change
Transfer of ownership
Redesign or addition to the approved amount of built -upon area
Further subdivision of the project area
Filling in, altering, or piping of any vegetative conveyance shown on the approved plan
The Director may determine that other revisions to the project should require a modification to the permit
The Director may notify the permittee when the permitted site does not meet one or more of the mmunum
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
6 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
During construction, erosion shall be kept to a minimum and any eroded areas of the system will be
repaired immediately
The permittee grants permission to DENR Staff to enter the property for the purposes of inspecting the
project for compliance with the conditions of this permit
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
10 Decorative spray fountains will not be allowed in the stormwater treatment system
11 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
12 Prior to transfer of ownership, the system must be inspected by DWQ personnel, and determined to be
in compliance with all permit conditions Records of maintenance activities will be required
7

State Stormwater Management Systems
Permit No SW8980434MOD
li 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
e Maintenance of side slopes in accordance with approved plans and specifications
f Debris removal and unclogging of outlet structure, onfice device and catch basins and piping
g Access to the outlet structure must be available at all times
14 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
15 Prior to the sale of any lot, deed restrictions must be recorded which limit the built -upon area per lot to
the amount as shown on the Project Data Sheet, per Section I, Part 2 The recorded statements must
follow the form
"The maximum built -upon area per lot is, see Exhibit A This allotted amount includes any built -
upon area constructed within the lot property boundaries, and that portion of the right-of-way
between the front lot line and the edge of the pavement Built upon area includes, but is not
limited to, structures, asphalt, concrete, gravel, brick, stone, slate, and coquma, but does not
include raised, open wood decking, or the water surface of swimming pools "
b "The covenants pertaining to stormwater regulations may not be changed or deleted without
concurrence of the State "
"Alteration of the drainage as shown on the approved plan may not take place without the
concurrence of the State "
d "Lots within CAMA's Area of Environmental Concern may be subject to a reduction in their
allowable built -upon area due to CAMA regulations "
"All runoff on the lot must dram into the permitted systems This may be accomplished through
providing roof drain gutters which drain to the street, grading the lot to dram toward the street,
or grading perimeter swales and directing them into the pond or street Lots that naturally drain
into the system are not required to provide these measures "
16 A copy of the recorded deed restrictions must be submitted to the Division within 30 days of the date of
recording the plat, and prior to selling lots The recorded copy must bear the signature of the Permittee,
the deed book number and page, and stamp/signature of the Register of Deeds
17 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

State Stormwater Management Systems
PermrtNo SW8980434MOD
18 A copy of the approved plans and specifications shall be maintained on file by the Pemuttee for a
minimum of ten years from the date of the completion of construction
III GENERAL CONDITIONS
This permit is not transferable In the event there is a desire for the facilities to change ownership, or
there is a name change of the Permittee, a "Name/Ownership Change Form" must be submitted to the
Division of Water Quality accompanied by appropriate documentation from the parties involved, such
as a copy of the deed of trust Other supporting materials, such as a signed Operation and Maintenance
plan in the case of engineered systems, will also be required The project must be in good standing with
DWQ 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 j unsdiction
4 In the event that the facilities fail to perform satisfactorily, including the creation of nuisance conditions,
the Permittee shall take immediate corrective action, including those as may be required by this Division,
such as the construction of additional or replacement stormwater management systems
5 The permit may be modified, revoked and reissued or terminated for cause The filmg of a request for
a permit modification, revocation and reissuance or termination does not stay any permit condition
6 Permittee grants permission to staff of the DWQ to access the property for the purposes of inspecting the
stormwater facilities during normal business hours
The permittee shall notify the Division of any mailing address changes within 30 days
Permit issued this the 7th day of April, 2000
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
- A. am r ,
—� Kerr T Stevens, Director
`f Division of Water Quality
By Authority of the Environmental Management Commission
Permit Number SW8 980434MOD

State Stormwater Management Systems
Permit No SW8 980434MOD
Row Boat Row Subdivision
Stormwater Permit No SW8 980434MOD
Brunswick County
Designer's Certification
Page 1 of 2
1, as a duly registered in
the State of North Carolina, having been authorized to observe (penodically/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 ttus form are a part of this Certification
Noted deviations from approved plans and specifications
Signature
Registration Number
Date
SEAL
10

State Stormwater Management Systems
Permit No SW8980434MOD
Certification Requirements
Page 2 of 2
1 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
All the built -upon area associated with the project is graded such that the runoff drams 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
_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
] 1 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, a forebay, and the vegetated filter
14 The overall dimensions of the system, as shown on the approved plans, are provided
cc NCDENR-DWQ Regional Office
Delaney Aycock, Brunswick County Building Inspector
11

I t
Z5{ 131T A
TABLE OFLOT S/ZE5 AND BU/L T UPON AREA5
FOR ROWBOAT ROWSU50IV1S/ON,
BALD /-LEAD /.RAND
LOT #
LOT AREA (ACRE)
ALLOWABLE BUILT UPON AREA (5Q FT )
200
0 12
2500
202
0 14
2500
204
0 14
2500
20G
0 10
2500
207
O II
2500
208
0 10
2500
209
0 II
2500
210
O II
2500
211
0 II
2500
212
0 12
2500
213
0 11
2500
214
0 12
2500
215
0 II
2500
216
O 13
2500
217
0 11
2500
218
O 14
2500
215
0 15
1000
220
—0 17
2500
common area
0 14
500
TOTAL 44,000
Cape Fear Engineering
Revised 02/08/00
File lot sizes and built upon areas doc

OFFICE USE ONLY - -
Received
Fee PsTd
Pemit Number
o 0
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 Applicant's name (specify the name of the corporation, individual, etc who owns the project)
Bald Head Island Limited
2 Print Owner/Signing Official's name and title (person legally responsible for facility and
compliance)
✓ Kenneth M. Kirkman, Attorney in Fact
3 Mailing Address for person listed in item 2 above
P O Box 3069
City Bald Head Island State NC Zip 28461
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 )
Row Boat Row Subdivision
5 Location of Project (street address)
Row Boat Row
City Bald Head Island County Brunswick
6 Directions to project (from nearest major intersection)
Take the ferry from Indigo Plantation Manna located in Southport, NC
7 Latitude 33052'25" Longitude
8 Contact person who can answer questions about the project
Name Ken Stewart
II PERMIT INFORMATION
1 Specify whether project is (check one)
New
78°00'10"
Telephone Number
Renewal
of project
1457-7326
X Modification
Form SVIU-101 Version 3 99
Page 1 of 4

2 If this application is being submitted as the result of a renewal or modification to an existing permit, list the
Existing permit number SW8 980434 Modification And its Issue date (if known) December 17, 1999
3 Specify the type of project (check one)
Low Density X High Density Redevelop General Permit Other
4 Additional Project Requirements (check applicable blanks)
X 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
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
This project implements stormwater control systems for a high density development consisting of infiltration swales
and underground infiltration trenches The swales and trenches will be located in recorded drainage easements
2 Stormwater runoff from this project drains to the Cape Fear
3 Total Project Area 49 acres 4 Project Built Upon Area
5 How many drainage basins does the project have9 6
River basin
288 %
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
Drainage Area 1
Drainage Area 2
Receiving Stream Name
Bald Head Island Marina
Cape Fear River
Receiving Stream Class
SC
SA
Drainage Area
1 15 acres
0 91 acres
Existing Impervious* Area
0
0
Proposed Im ervious* Area
0 55 acres
0 32 acres
% Impervious* Area total
47 8%
35 2%
Impervious* Surface Area
Drainage Area 1
Drainage Area 2
On -site Buildings
0 37 acres
0 23 acres
On -site Streets
0 14 acres
0 07 acres
On -site Parking
0
0
On -site Sidewalks
0 03 acres
0 02 acres
Other on -site
0 01 acres(Amenity Area
0
Off site
0
0
Total 0 55 acres
Total 0 32 acres
" 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

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
Basin Information
Drainage Basin 3
Drainage Basin 4
Receiving Stream Name
Cape Fear River
Cape Fear River
Receiving Stream Class
SA
SA
Drainage Basin Area
0 70 acres
0 65 acres
Existing Impervious* Area
0
0
Proposed Impervious* Area
0 32 acres
0 22 acres
% Impervious* Area total
45 7 %
33 8 %
Impervious* Surface Area
Drainage Basin 3
Drainage Basin 4
On -site Buildings
0 23 acres
0 17 acres
On -site Streets
0 07 acres
0 04 acres
On -site Parking
0
0
On -site Sidewalks
0 02 acres
0 01 acres
Other on -site
0
0
Off site
0
0
Total
0 32 acres
E= 0 22 acres
Basin Information
Drainage Basin 5
Drainage Basin 6
Receiving Stream Name
Cape Fear River
Cape Fear River
Receiving Stream Class
SA
SC
Drainage Basin Area
122 acres
0 27 acres
Existing Impervious* Area
0
0
Proposed Impervious* Area
0
0
% Impervious* Area (total)
0
0
Impervious* Surface Area
Drainage Basin 5
- Drainage Basin 6
On -site Buildings
0
0
On -site Streets
0
0
On -site Parking
0
0
On -site Sidewalks
0
0
Other on -site
0
0
Off site
0
0
Total
E= 0
E= 0

7 How was the off -site impervious area listed above derived? No offsite area
IV DEED RESTRICTIONS AND PROTECTIVE COVENANTS
The following italicized deed restrictions and protective covenants are required to be recorded for all
subdivisions, cimparcels 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
SW8 980434 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 _ ** square feet of any tot 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 ofswimming 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 area of the permitted amount requires a state stormwater management permit modification prior to
construction
5 All permitted runofffrom 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
** See attached Exhibit A
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
Initials
• Original and one copy of the Stormwater Management Permit Application Form SW?
• One copy of the applicable Supplement Form(s) for each BMP :S�3
• Permit application processing fee of $420 (payable to NCDENR) {�
• Detailed narrative description of stormwater treatment /management Sc3P
• Two copies of plans and specifications, including $�3p
-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
-Origmal 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)
VII 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 or firm) Cape Fear Engmeenn
Mailing Address 5040 New Centre Dnve, Smite D
City Wilmington State NC Zip 28403
Phone [phone] Fax [phone]
VIH APPLICANT'S CERTIFICATION
I, (print or type name ofperson listed in General Information, item 1) Kenneth M. Kirkman , Atty, in
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
NC'AC 2H 1000
Signature
Date
P 'ac t
Form SW-101 Version 3 99 Page 4 of 4

! t.
,fXf//B/T A
TABLE OF LOT 5/ZE5 AND BU/L T UPON AREA5
FOR ROW BOAT ROW 5UBDIV15/ON,
BALD HEAD 15LAN0
LOT #
LOT AREA (ACRE)
ALLOWABLE BUILT UPON AREA (5Q FT )
200
0 12
2500
202
0 14
2500
204
0 14
2500
20G
0 10
2500
207
0 II
2500
208
0 10
2500
209
0 II
2500
210
0 11
2500
211
0 II
2500
212
0 12
2500
213
0 11
2500
214
0 12
2500
215
0 11
2500
21G
0 13
2500
217
0 II
2500
218
0 14
2500
219
0 15
1000
220
0 17
2500
common area
0 14
500
TOTAL 44,000
Cape Fear Engineering
Revised 02/08/00
File lot saes and built upon areas doc

OFFICE USE ONLY
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 Applicant's name (specify the name of the corporation, individual, etc who owns the project)
Bald Head Island Limited
2 Print Owner/Signing Official's name and title (person legally responsible for facility and compliance)
Kent Mitchell, owner
3 Mailing Address for person listed in item 2 above
P O Box 3069
City Bald Head Island State NC Zip 28461
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 )
Row Boat Row Subdivision
5 Location of Project (street address)
City Bald Head Island
County Brunswick
6 Directions to project (from nearest major intersection)
Take the ferry from Indigo Plantation Marina located in Southport, NC
7 Latitude 33052'25" Longitude 78000' 10"
8 Contact person who can answer questions about the project
Name Ken Stewart Telephone Number
II PERMIT INFORMATION
1 Specify whether project is (check one) New
Renewal
of project
[phone]
X Modification
Form SWU-101 Version 3 99 Page 1 of
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 Applicant's name (specify the name of the corporation, individual, etc who owns the project)
Bald Head Island Limited
2 Print Owner/Signing Official's name and title (person legally responsible for facility and compliance)
Kent Mitchell, owner
3 Mailing Address for person listed in item 2 above
P O Box 3069
City Bald Head Island State NC Zip 28461
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 )
Row Boat Row Subdivision
5 Location of Project (street address)
City Bald Head Island
County Brunswick
6 Directions to project (from nearest major intersection)
Take the ferry from Indigo Plantation Marina located in Southport, NC
7 Latitude 33052'25" Longitude 78000' 10"
8 Contact person who can answer questions about the project
Name Ken Stewart Telephone Number
II PERMIT INFORMATION
1 Specify whether project is (check one) New
Renewal
of project
[phone]
X Modification
Form SWU-101 Version 3 99 Page 1 of

2 If this application is being submitted as the result of a renewal or modification to an existing permit, list the
Existing permit number S W8 980434 Modification And its issue date (if known) December 17, 1999
3 Specify the type of project (check one)
Low Density X High Density Redevelop General Permit Other
4 Additional Project Requirements (check applicable blanks)
X 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
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
This project implements stormwater control system for high density development consisting of an infiltration swale
The swale and associated distribution system will be located in recorded drainage easements
2 Stormwater runoff from this project drains to the
Cape Fear
River basin
3 Total Project Area 49 acres
4 Project Built Upon Area
298 %
5 How many drainage basins does the project have9 2
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
Drainage Area 1
Drainage Area 2
Receiving Stream Name
Cape Fear River
Cape Fear River
Receiving Stream Class
SA
SA
Drainage Area
3 50 acres
1 40 acres
Existing Impervious* Area
0
0
Proposed Impervious* Area
1 46 acres
0
% Impervious* Area total
41 7%
0%
Impervious* Surface Area
Drainage Area 1
Drainage Area 2
On -site Buildings
1 00 acres
0
On -site Streets
0 45 acres
0
On -site Parkin
0
On -site Sidewalks
0
Other on -site
0 01 1 acres(Amenity Area
0
Off site
0
Total 1 46 acres
Total 0
* Impervious area is defined as the built upon area including, but not hunted to, buildings, roads, parking areas
sidewalks, gravel areas etc
Form SWU-101 Version 3 99 Page 2 of 4

7 How was the off -site impervious area listed above derived? No offsite area
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 intender/ to ensure ongoing compliance with state stormwater management permit number
SW8 980434 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 _ * * square feet of any lot shall be covered by structures or impervious materials
Impervious materials include asphalt, gravel, conciete brick, stone slate or similar material but do not include wood
decking or the water surface ofswimmmg pools
3 Swales shall not be filled in piped or altered except as necessary to lit ovide driveway crossings
4 Built -upon area in excess area of the permitted amount requu es a state stormwater management permit modification prior to
construction
5 All permitted runofffrom outparcels orfuture development shall be directed into the permitted stormwater corm of
system These connections to the stormwater control system shall be performed in a manner that maintains the
integrity and perfoi mance of the system as permitted
* * See attached Exhibit A
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
Initials
• Original and one copy of the Stormwater Management Permit Application Form /yyliYL
• One copy of the applicable Supplement Form(s) for each BMP
• Permit application processing fee of $420 (payable to NCDENR) iyyro—
• Detailed narrative description of stormwater treatment /management iYyr�ei
• 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
-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)
VII 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 or firm) Cape Fear Engineering
Mailing Address 5040 New Centre Drive, Suite D
City
State NC
Phone [phone] Fax [phone]
VIII APPLICANT'S CERTIFICATION
Zip
28403
I, (print or type name ofpervon listed in General Information, item 2) Kent Mitchell
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 2H 1000
Signature
Date / Z9 9
Form SW U-101 Version 3 99 Page 4 of 4

25VIL11,51TA
TABLE OF LOT 5/ZES AND BU/L T UPON AREAS
FOR ROW BOAT ROWSUBO/I//S/ON,
BALD HEAD /SLANP
LOT #
LOT AREA (ACRE)
ALLOWABLE BUILT UPON AREA (5Q FT )
200
012
2500
202
0 14
2500
204
0 14
2500
20G
0 10
2500
207
0 II
2500
208
0 10
2500
209
011
2500
210
011
2500
211
0 II
2500
212
0 12
2500
213
0 II
2500
214
0 12
2500
215
011
2500
216
013
2500
217
0 II
2500
218
0 14
2500
219
0 15
1000
220
0 17
2500
common area
0 14
500
TOTAL 44,000
Cape Fear Engineering
Revised 12/27/99
File lot sizes and built upon areas doc

-C
Permit No
(to be pi ovided by DWQ)
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
INFILTRATION BASIN SUPPLEMENT
This foi in maybe photocopied foi use as an original
DWQ Stormwater Management Plan Review
A complete stormwater management plan submittal includes a stormwater management permit application, an
infiltration basin supplement for each system, design calculations, soils report and plans and specifications
showing all stormwater conveyances and system details
I. PROJECT INFORMATION
Project Name Row Boat Row Subdivision
Contact Person Ken Stewart Phone Number [phone]
This worksheet applies to Basin No
SW-4
(as identified on plans)
in Drainage Area #4(SA waters)
(from Form SWU-101)
II. DESIGN INFOMATION —Attach supporting calculations/documentation The soils report must be
based upon actual field investigation and soil borings County soil maps are not an acceptable source
of soils information All elevations shall be in feet mean sea level (fmsl)
Soils Report Summary
Soil Type
Infiltration Rate
SHWT Elevation
Basin Design Parameters
Design Storm
Design Volume
Drawdown Time
Basin Dimensions
Basin Size
Basin Volume Provided
Basin Elevations
Bottom Elevation
Storage Elevation
Top Elevation
Newhan&Fripp
20 ©or cf/hr/sf (circle appropriate units)
20 frnsl (Seasonal High Water Table elevation)
15
1255
004
160
1280
75
85
85
inch
cf
days
ftx
cf
frisl
fmsl
fmsl
(l 5 inch event for SA waters, I inch event for others)
50 ft = 800 sy ft (bottom dimensions)
Form SWU-103 Rev 3 99 Page I of 3

,r ` � � .
III REQUIRED ITEMS CHECKLIST
The following checklist outlines design requirements per the Stormwater Best Management Practices Manual
(N C Department of Environment, Health and Natural Resources, February 1999) and Administrative Code
Section 15 A NCAC 2H 1008
Initial in the space provided to indicate the f ollowing design requirements have been met and supporting
documentation is attached If the applicant has designated an agent in the Stormwater Management Permit
Application Form, the agent may initial below Attach justification if a requirement has not been met.
Applicants Initials
a
System is located 50 feet from class SA waters and 30 feet from other surface waters
MQQ b
System is located at least 100 feet from water supply wells
c
Bottom of system is at least 2 feet above the seasonal high water table
5 C7 d
Bottom of the system is 3 feet above any bedrock of impervious soil horizon
,Y '�S17 e
System is not sited on or in fill material or DWQ approval has been obtained
513P f
System is located in a recorded drainage easement for the purposes of operation and
maintenance and has recorded access easements to the nearest public right-of-way
SI3P g
Drainage area for the device is less than 5 acres
h
Soils have a minimum hydraulic conductivity of 0 52 inches per hour and soils report is
attached
36 i
System captures and infiltrates the runoff from the first 1 0 inch of rainfall (1 5 inch event
for areas draining to SA waters) Design volume and infiltration calculations attached
P
System is sized to take into account the runoff at the ultimate built -out potential from all
I
surfaces draining to the system, including any off -site drainage Calculations attached
�QP k
All side slopes stabilized with vegetated cover are no steeper than 3 1 (H V)
1
A pretreatment device such as a catch basin, grease trap, filter strip, grassed swale or
sediment trap is provided
4 in
Bottom of the device is covered with a layer of clean sand to an average depth of 4 inches or
dense vegetative cover is provided
S� P n vVegetated filter is provided for overflow and detail is shown on plans (Required minimum
length is 50 feet for SA waters, 30 feet for other waters)
o Flow distribution mechanism within the basin provided
3 Q p p A benchmark is provided to determine the sediment accumulation in the pretreatment device
q *Runoff in excess of the design volume bypasses off-ime systems (bypass detail provided)
S�3p r System is designed to draw down the design storage volume to the proposed bottom elevation
under seasonal high water conditions within five days A soils report and all pertinent draw -
down calculations are attached
S� s Plans ensure that the installed system will meet design specifications (constructed or
restored) upon initial operation once the project is complete and the entire drainage area is
stabilized
* -rFE PaoSFcr A&294rivE
Form SWU-103 Rev 3 99 Page 2 of 3

IV. INFILTRATION BASIN OPERATION AND MAINTENANCE AGREEMENT
l After every runoff producing rainfall event and at least monthly inspect the infiltration system for erosion,
trash accumulation, vegetative cover, and general condition
2 Repair eroded areas immediately, re -seed as necessary to maintain adequate vegetative cover, mow
vegetative cover to maintain a maximum height of six inches, and remove trash as needed
3 After every runoff producing rainfall event and at least monthly inspect the bypass, inflow and overflow
structures for blockage and deterioration Remove any blockage and repair the structure to approved design
specifications
4 Remove accumulated sediment from the pretreatment system and infiltration basin annually or when depth
in the pretreatment unit is reduced to 75% of the original design depth The system shall be restored to the
original design depth without over -excavating Over -excavating may cause the required water table
separation to be reduced and may compromise the ability of the system to perform as designed Removed
sediment shall be disposed of in an appropriate manner and shall not be handled in a manner that will
adversely impact water quality (i e stockpiling near a stormwater treatment device or stream, etc )
A benchmark shall be established in the pretreatment unit The benchmark will document the original
design depth so that accurate sediment accumulation readings can be taken The measuring device used to
determine the depth at the benchmark shall be such that it will give an accurate depth reading and not
readily penetrate into accumulated sediments
When the design depth reads 025 feet in the pretreatment unit, the sediment shall be
removed from both the pretreatment unit and the infiltration basin.
If the Division determines that they system is failing, the system will immediately be repaired to original
design specifications If the system cannot be repaired to perform its design function, other stormwater
control devices as allowed by NCAC 2H 1000 must be designed, approved and constructed
I acknowledge and agree by my signature below that I am responsible for the performance of the five
maintenance procedures listed above I agree to notify DWQ of any problems with the system or prior to any
changes to the system or responsible party
Print Name and Title Kenneth
Address
Phone
Signature
Kirkman, Attorney in Fact
P O Box 3069, Bald Head Island
457-
NC 28461
Date
Note. The legally responsible party should not be a homeowners association unless more than 50% of the lots have been sold and a
resident of the subdivisdion has been named the president
1> �nrrA o \ hu (J�o u a Notary Public for the State of �� L County of
r` , t � , do hereby certi��C—�')y )C_-.h V\ \� �F�Mf� �' j personally appeared before me this
day of Q_ t ,o , ,r)nn(-) ,and acknowledge the due execution of the foregoing infiltration basin maintenance requirements
Witness my hand and official seal,
OFFICIAL SEAL
Notary Pubic North Cmhna
S h4 BRUNSWICK COUNTY My com vision expires
I r LORRAINE THO p�M S�pN�`
My Commission Eep�res `- t
Form SWU-103 Rev 3 99 Pagc 3 of 3

Permit No
(to be provided by DWQ)
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
INFILTRATION BASIN SUPPLEMENT
This form may be photocopied for use as an original
DWO Stormwater Management Plan Review
A complete stormwater management plan submittal includes a stormwater management permit application, an
infiltration basin supplement for each system, design calculations, soils report and plans and specifications
showing all stormwater conveyances and system details
I. PROJECT INFORMATION
Project Name Row Boat Row Subdivision
Contact Person Ken Stewart Phone Number [phone]
This worksheet applies to Basin No SW-3 in Drainage Area #3(SA waters)
(as identtfied on plans) (from Form SWU-101)
II. DESIGN INFOMATION —Attach supporting calculations/documentation The soils report must be
based upon actual field investigation and soil bonngs County soil maps are not an acceptable source
of soils information All elevations shall be in feet mean sea level (finsl)
Soils Report Summary
Soil Type
Infiltration Rate
SHWT Elevation
Basin Design Parameters
Design Storm
Design Volume
Drawdown Time
Basin Dimensions
Basin Size
Basin Volume Provided
Basin Elevations
Bottom Elevation
Storage Elevation
Top Elevation
Newhan&Fripp
20 P�R or ef/hr/sf (circle appropriate units)
20 fmsl (Seasonal High Water Table elevation)
1 5 inch (1 S inch event for SA waters 1 inch event for others)
1759 c f
004 days
240 ft X 50 ft = 1200 sq ft (bottom dimensions)
1920 c f
70 fmsl
80 fmsl
80 fins]
Form SWU-103 Rev 3 99 Page I of 3

III REQUIRED ITEMS CHECKLIST
The following checklist outlines design requirements per the Stormwater Best Management Practices Manual
(N C Department of Environment, Health and Natural Resources, February 1999) and Administrative Code
Section 15 A NCAC 2H 1008
Initial in the space provided to indicate the f ollowing design requirements have been met and supporting
documentation is attached If the applicant has designated an agent in the Stormwater Management Permit
Application Form, the agent may initial below Attach justification if a requirement has not been met
Applicants Initials
�6> V a System is located 50 feet from class SA waters and 30 feet from other surface waters
3QP b System is located at least 100 feet from water supply wells
—5136� c Bottom of system is at least 2 feet above the seasonal high water table
SQp d Bottom of the system is 3 feet above any bedrock of impervious soil horizon
-'C:ZQp e System is not sited on or in fill material or DWQ approval has been obtained
2% P f System is located in a recorded drainage easement for the purposes of operation and
maintenance and has recorded access easements to the nearest public right-of-way
34 P g Drainage area for the device is less than 5 acres
SAP h Soils have a minimum hydraulic conductivity of 0 52 inches per hour and soils report is
attached
Qp i System captures and infiltrates the runoff from the first 10 inch of rainfall (1 5 inch event
for areas draining to SA waters) Design volume and infiltration calculations attached
-MOP
System is sized to take into account the runoff at the ultimate built -out potential from all
surfaces draining to the system, including any off -site drainage Calculations attached
3R P k All side slopes stabilized with vegetated cover are no steeper than 3 1 (H V)
1 A pretreatment device such as a catch basin, grease trap, filter strip, grassed swale or
sediment trap is provided
P m Bottom of the device is covered with a layer of clean sand to an average depth of 4 inches or
dense vegetative cover is provided
n *Vegetated filter is provided for overflow and detail is shown on plans (Required minimum
length is 50 feet for SA waters, 30 feet for other waters)
_3 53 P o Flow distribution mechanism within the basin provided
3 Q P p A benchmark is provided to determine the sediment accumulation in the pretreatment device
S QP q *Runoff in excess of the design volume bypasses off-line systems (bypass detail provided)
r System is designed to draw down the design storage volume to the proposed bottom elevation
under seasonal high water conditions within five days A soils report and all pertinent draw -
down calculations are attached
s Plans ensure that the installed system will meet design specifications (constructed or
restored) upon initial operation once the project is complete and the entire drainage area is
stabilized
sEE NO 36r[r IVA44ATIVr
Form S W U-103 Rev 3 99 Page 2 of 3

IV. INFILTRATION BASIN OPERATION AND MAINTENANCE AGREEMENT
1 After every runoff producing rainfall event and at least monthly inspect the infiltration system for erosion,
trash accumulation, vegetative cover, and general condition
2 Repair eroded areas immediately, re -seed as necessary to maintain adequate vegetative cover, mow
vegetative cover to maintain a maximum height of six inches, and remove trash as needed
3 After every runoff producing rainfall event and at least monthly inspect the bypass, inflow and overflow
structures for blockage and deterioration Remove any blockage and repair the structure to approved design
specifications
4 Remove accumulated sediment from the pretreatment system and infiltration basin annually or when depth
in the pretreatment unit is reduced to 75% of the original design depth The system shall be restored to the
original design depth without over -excavating Over -excavating may cause the required water table
separation to be reduced and may compromise the ability of the system to perform as designed Removed
sediment shall be disposed of in an appropriate manner and shall not be handled in a manner that will
adversely impact water quality (1 e stockpiling near a stormwater treatment device or stream, etc )
A benchmark shall be established in the pretreatment unit The benchmark will document the original
design depth so that accurate sediment accumulation readings can be taken The measuring device used to
determine the depth at the benchmark shall be such that it will give an accurate depth reading and not
readily penetrate into accumulated sediments
When the design depth reads _0 25 feet in the pretreatment unit, the sediment shall be
removed from both the pretreatment unit and the infiltration basin.
If the Division determines that they system is failing, the system will immediately be repaired to original
design specifications If the system cannot be repaired to perform its design function, other stormwater
control devices as allowed by NCAC 2H 1000 must be designed, approved and constructed
I acknowledge and agree by my signature below that I am responsible for the performance of the five
maintenance procedures listed above I agree to notify DWQ of any problems with the system or pnor to any
changes to the system or responsible party
Print Name and Title Kenneth M
Address
Phone
P O Box 3069, Bald Head
10) 457-
Kirkman, Attornev in Fact
NC 28461
Date
Signature
Note' The legally re ponsi le parry should not be a homeowners association unless more than 50% of the lots have been sold and a
resident of the subdrvisdion has been named the president
1, l7h rMais \ h� ,.,, ��o �J a Notary Public for the State of �� '_ , County of
hr0 T t, t i_1t , do here y ce� r fy that uC-0.� t,it" personally appeared before me this Q ��
day off h t-U!� r-,and acknowledge the due execution of the foregoing infiltration basin maintenance requirements
Witness my hand and official seal,
OFFICIAL SEAL
Notary Pubic North Carolma
BRUNSWICK COUNTY
LORRAINE THOMPSOt
My commision expires
Form SWU-103 Rev 3 99 Page 3 of 3

Permit No
(to be provided by DWQ)
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
INFILTRATION BASIN SUPPLEMENT
This form maybe photocopied foi use as an of igmal
DWQ Stormwater Management Plan Review
A complete stormwater management plan submittal includes a stormwater management permit application, an
infiltration basin supplement for each system, design calculations, soils report and plans and specifications
showing all stormwater conveyances and system details
I. PROJECT INFORMATION
Project Name Row Boat Row Subdivision
Contact Person Ken Stewart Phone Number [phone]
This worksheet applies to Basin No SW-2 in Drainage Area #2(SA waters)
(as identified on plans) (from Form SWU-101)
II DESIGN INFOMATION — Attach supporting calculations/documentation The soils report must be
based upon actual field investigation and soil borings County soil maps are not an acceptable source
of soils information All elevations shall be in feet mean sea level (fmsl)
Soils Report Summary
Soil Type
Infiltration Rate
SHWT Elevation
Basin Design Parameters
Design Storm
Design Volume
Drawdown Time
Basin Dimensions
Basin Size
Basin Volume Provided
Basin Elevations
Bottom Elevation
Storage Elevation
Top Elevation
Newhan&Fripp
20 FUYR or ef/hr/sf (circle appropriate units)
20 fmsl (Seasonal High Water Table elevation)
15
1816
004
250
2000
90
100
100
inch
cf
days
ftx
cf
finsl
fins]
fmsl
(1 5 inch event for SA waters 1 inch event for others)
50 R = 1250 sq ft (bottom dimensions)
Form SWU-I03 Rev 3 99 Page I of 3

IiI REQUIRED ITEMS CHECKLIST
The following checklist outlines design requirements per the Stormwater Best Management Practices Manual
(N C Department of Environment, Health and Natural Resources, February 1999) and Administrative Code
Section 15 A NCAC 2H 1008
Initial in the space provided to indicate the f ollowing design requirements have been met and supporting
documentation is attached If the applicant has designated an agent in the Stormwater Management Permit
Application Form, the agent may initial below Attach justification if a requirement has not been met
Applicants Initials
3%'P a System is located 50 feet from class SA waters and 30 feet from other surface waters
759P b System is located at least 100 feet from water supply wells
S c Bottom of system is at least 2 feet above the seasonal high water table
Se� d
Bottom of the system is 3 feet above any bedrock of impervious soil horizon
'S't�;p e
System is not sited on or in fill material or DWQ approval has been obtained
� P f
System is located in a recorded drainage easement for the purposes of operation and
maintenance and has recorded access easements to the nearest public right-of-way
:SM2 g
Drainage area for the device is less than 5 acres
"S@P h
Soils have a minimum hydraulic conductivity of 0 52 inches per hour and soils report is
attached
-S'Qp 1 System captures and infiltrates the runoff from the first 10 inch of rainfall (1 5 inch event
for areas draining to SA waters) Design volume and infiltration calculations attached
I System is sized to take into account the runoff at the ultimate built -out potential from all
surfaces draining to the system, including any off -site drainage Calculations attached
�Q P k All side slopes stabilized with vegetated cover are no steeper than 3 1 (H V)
'SQ 1 A pretreatment device such as a catch basin, grease trap, filter strip, grassed swale or
sediment trap is provided
3Q in Bottom of the device is covered with a layer of clean sand to an average depth of 4 inches or
dense vegetative cover is provided
34P n *Vegetated filter is provided for overflow and detail is shown on plans (Required minimum
length is 50 feet for SA waters, 30 feet for other waters)
'S}3 (-' o Flow distnbutron mechanism within the basin provided
3� p A benchmark is provided to determine the sediment accumulation in the pretreatment device
"SAS P q *Runoff in excess of the design volume bypasses off-line systems (bypass detail provided)
r System is designed to draw down the design storage volume to the proposed bottom elevation
under seasonal high water conditions within five days A soils report and all pertinent draw -
down calculations are attached
s Plans ensure that the installed system will meet design specifications (constructed or
restored) upon initial operation once the project is complete and the entire drainage area is
stabilized
ire sEF PAOs6C-r n/AaRATlvF
Fomi SWU-103 Rev 3 99 Page 2 of 3

v
IV. INFILTRATION BASIN OPERATION AND MAINTENANCE AGREEMENT
After every runoff producing rainfall event and at least monthly inspect the infiltration system for erosion,
trash accumulation, vegetative cover, and general condition
Repair eroded areas immediately, re -seed as necessary to maintain adequate vegetative cover, mow
vegetative cover to maintain a maximum height of six inches, and remove trash as needed
After every runoff producing rainfall event and at least monthly inspect the bypass, inflow and overflow
structures for blockage and deterioration Remove any blockage and repair the structure to approved design
specifications
Remove accumulated sediment from the pretreatment system and infiltration basin annually or when depth
in the pretreatment unit is reduced to 75% of the original design depth The system shall be restored to the
original design depth without over -excavating Over -excavating may cause the required water table
separation to be reduced and may compromise the ability of the system to perform as designed Removed
sediment shall be disposed of in an appropriate manner and shall not be handled in a manner that will
adversely impact water quality (i e stockpiling near a stormwater treatment device or stream, etc )
A benchmark shall be established in the pretreatment unit The benchmark will document the original
design depth so that accurate sediment accumulation readings can be taken The measuring device used to
determine the depth at the benchmark shall be such that it will give an accurate depth reading and not
readily penetrate into accumulated sediments
When the design depth reads 0 25 feet in the pretreatment unit, the sediment shall be
removed from both the pretreatment unit and the infiltration basin.
If the Division determines that they system is failing, the system will immediately be repaired to original
design specifications If the system cannot be repaired to perform its design function, other stormwater
control devices as allowed by NCAC 2H 1000 must be designed, approved and constructed
I acknowledge and agree by my signature below that I am responsible for the performance of the five
maintenance procedures listed above I agree to notify DWQ of any problems with the system or pnor to any
changes to the system or responsible party
PrmtNameandTnle Kenneth M. Kirkman, Attorney in Fact
Address
Phone
P O Box 3069, Bald Head Island, NC 28461
10)457-7000
Date
Signature // 11 Z/
Note. The legally i esponsible parry should not be a homeowners association unless more than 50% of the lots have been sold and a
resident of the subdivisdion has been named the president
1, r C aP � o r.n ra _� o �,� a Notary Public for the State of til C , County of
do hereby certify that V.P.y. �� c_ d.,}� Q>\ �� y��,�,, A,J personally appeared before me this
day of rl a k 'Y-o-) ,and acknowledge the due execution of the foregoing infiltration basin maintenance requirements
OFFICIAL SEAL
Notary Pubic North Carolma
BRUNSWICK COUNTY
LORRAINE THOM\PSOP
v Commission Erm,.A? � ,,
My commision expires
Form SWU-103 Rev 3 99
Page 3 of 3

COLIiiR ivU
(to be provided by DWQ)
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
UNDERGROUND INFILTRATION TRENCH SUPPLEMENT
This form may be photocopied for use as an original
DWO Stormwater Management Plan Review
A complete stormwater management plan submittal includes a stormwater management permit application, an
underground infiltration trench supplement for each system, design calculations, and plans and specifications
showing all stormwater conveyances and system details
I. PROJECT INFORMATION
Project Name
Contact Person
Row Boat Row Subdivision
Ken Stewart
Phone Number [phone]
For projects with multiple infiltration systems, a supplement form must be completed for each system This
worksheet applies to Trench IT-1 thru IT-14
(from plans)
in Drainage Area #1 (SC waters)
(from Form SWU-10/)
II. DESIGN INFOMATION (attach supporting calculations/documentation)
Soils Report Summary (based upon an actual field investigation and soil borings)
SOIL Type
Newhan&Frtpp
Infiltration Rate
20
©or cf/hr/sf (circle appropriate units)
SHWT Elevation
20
fins] (Seasonal High Water Table elevation)
Trench Design Parameters
Design Volume
147
c f
Design Storm
1 0
inch event (1 5 inch event for SA waters, I inch event for others)
Drawdown Time
00625
days
Perforated Pipe Size
1 y - 30
inch diameter
Perforated Pipe Length
30
ft
No Observation Wells
0
(may be required on a case by case basis)
Stone Type (if used)
N/A
Stone Void Ratio
N/A
Trench Elevations (in feet mean
sea level)
Bottom Elevation
40
fmsl
Storage/Overflow Elevation
75
finsl
Trench Dimensions
Height
25
ft
Length
3i x J9_..,k = �,Zo ft
Width
25
ft
Volume Provided
147` X" #/a„i,=6,Zgfg cu ft
Forth SWU-107 Rev 3 99 Page I of 4

III REQUIRED ITEMS CHECKLIST
The following checklist outlines design requirements per the Stormwater Best Management Practices manual
(N C
Department of Environment, Health and Natural Resources, November 1995) and Administrative Code Section
15
A NCAC 2H 1008
Initial in the space provided to indicate that the following design requirements have been met and
supporting
documentation is attached If the applicant has designated an agent in the Stormwater Management
Permit
Application Form, the agent may initial below Attach justification if a requirement has not been met
Applicants Initials
_Zwv_'�' a
�� l
P c
SQP d
SQP e
f
g
SY37 h
System is located 50 feet from class SA waters and 30 feet from other surface waters
System is located at least 100 feet from water supply wells
Bottom of system is at least 2 feet above the seasonal high water table
Bottom of the system is 3 feet above any bedrock or impervious soil horizon
Off-line system, runoff in excess of the design volume bypasses the system (bypass detail
provided)
System is designed to draw down the design storage volume to the proposed bottom
elevation under seasonal high water conditions within five days based upon infiltration
through the bottom only (a hydrogeologic evaluation may be required)
Soils have a minimum hydraulic conductivity of 0 52 inches per hour
System is not sited on or in fill material or DWQ approval has been obtained
S> i Plans ensure that the installed system will meet design specifications (constructed or
restored) upon imtial operation once the project is complete and the entire drainage area is
stabilized
—,:_::Q 'N�
sQP
System is sized to take into account the runoff at the ultimate built -out potential from all
surfaces draining to the system, including any off -site drainage
System is located in a recorded drainage easement for the purposes of operation and
maintenance and has recorded access easements to the nearest public right-of-way
System captures and infiltrates the runoff from the first 10 inch of rainfall (1 5 inch event
for areas draining to SA waters)
m Drainage area for the device is less than 5 acres
�Q n A pretreatment device (filter strip, grassed swale, sediment trap, etc ) is provided
o Trench bottom is covered with a layer of clean sand to an average depth of 4 inches
t � p Sides of the infiltration trench are lined with geotextile fabric
SQ (� q Rock used is free of fines (washed stone) and has a large void ratio
r Side to bottom area ratio is less than 4 1
Form SWU-107 Rev 3 99 Page 2 of 4

s Observation we]l(s) are provided (case -by -case basis)
S� t #Vegetated filter is provided for overflow (50 feet for SA waters, 30 feet for other
waters)and detail is shown on plans
�� u A benchmark for checking sediment accumulation is provided
;* SEE Prtosecr /vAAfk,4r1✓E
IV UNDERGROUND INFILTRATION TRENCH OPERATION AND MAINTENANCE
AGREEMENT
1 After every runoff producing rainfall event and at least monthly inspect the bypass/overflow structure for
blockage and deterioration and the infiltration system for erosion, trash accumulation, grass cover, and general
condition
2 Repair eroded areas immediately, re -seed as necessary to maintain adequate vegetative cover, mow vegetative
cover to maintain a maximum height of six inches, and remove trash and blockages as needed to maintain
system performance
3 Remove accumulated sediment annually or when depth is reduced to 75% of the original design depth Restore
depth to original design depth without over -excavating Over -excavating may cause the required water table
separation to be reduced and may compromise the ability of the system to perform as designed
4 The water level in any monitoring wells will be recorded after a 1 inch rainfall event and at least once a month
Chronic high water table elevations (within 1 foot of the bottom of the system for a period of three months)
shall be reported to DWQ immediately
5 If DWQ determines that the system is failing, the system will immediately be repaired or replaced to original
design specifications If the system cannot be repaired to perform its design function, other stormwater control
devices as allowed by NCAC 2H 1000 must be designed, approved and constructed
Remove accumulated sediment from the infiltration system annually or when depth in the unit is reduced
to 75% of the original design depth The system shall be restored to the original design depth without over -
excavating Over -excavating may cause the required water table separation to be reduced and may
compromise the ability of the system to perform as designed Removed sediment shall be disposed of in an
appropriate manner and shall not be handled in a manner that will adversely impact water quality (i e
stockpiling near a stormwater treatment device or stream, etc )
A benchmark shall be established in the infiltration system The benchmark will document the original
design depth so that accurate sediment accumulation readings can be taken The measuring device used
to determine the depth at the benchmark shall be such that it will give an accurate depth reading and not
readily penetrate into accumulated sediments
When the depth at the benchmark reads 4 625 msl ,the accumulated sediment shall be
removed from the system
Form SWU-107 Rev 3 99 Page 3 of 4

J�
DWQ
I acknowledge and agree by my signature below that I am responsible maintaining the stormwater
collection system in accordance with the six maintenance procedures listed above I agree to notify
of any problems with the system or prior to any changes to the system or responsible party
Print Name and Title Kenneth M Kirkman, Attorney in Fact
Address
Phone
Signatut
P O Box 3067, Bald Head Island, NC 28461
Note* The legally responsible party should not be a homeowners association unless more than 50% of the lots have been sold and a
resident of the subdivision has been named the president
,aNotary Public for the State of �pr-�. �p,�h\�n�g County of
do Hereby certify rtify that 1(E U rJ - n .t--\ ',I ti (V , personally appeared before me this
day of M p,,�`� , ��� n ,and acknowledge the due execution of the foregoing infiltration basin maintenance
requirements Witness my hand and officmal�seal,
OFFICIAL SEAL
Notary Poblz North Carolina
►tfl BRUNSWICK COUNTY y
t LO�TRRAINE THOMPSON
wgEETmission Expires
My commission expires
Form SWU-107 Rev 3 99 Page 4 of 4

CAPE FEAR
Engineering, Inc.
5040 New Centre Drive Suite D
Wilmington, N C 28403
Voice [phone]
Fax [phone]
E-mail cteCEDbellsouth net
TO SCOTT VINSON
ATTENTION
MAR 0�
Tr
DATE 3-7-00
PROJECT NO 300-07
RE Row Boat Row
Bald Head Island
SW8 980434
Quantity
Drawing No
Description
2
Stormwater plans
2
Copy and original permit application
2
Design reports and calcs
1
Copy of three infiltration basins, and one infiltration trench
1
Power of attorney document
REMARKS
cc Pile CAPE FEAR Engineering, Inc
Signed
L V MIMStd Forms a Vans dM

DESIGN REPORT
FOR
ROW BOAT ROW 5U13DIV1510N
PREPARED FOR
BALD HEAD ISLAND LIMITED
Revised February 29, 2000
Iz
SEAL
024908
F
CAPE FEAR ENGINEERING, INC
5040 New Centre Drive, Suite D
WILMINGTON, NC 28403
[phone]
wTORMVVATE8
�ECEOVED
MAR 0 7 20M
Cape Fear Engmeermg
03/06/00 DVVO
Project Narranve_Hi_density_Rev2900 doc PRW S

PROJECT NARRATIVE
General
Under Stormwater Management Permit #5W8 980434, Row Boat Row, an 18-
lot 5m6jle family 5ubdwi5ion on Bald Head Island, NC, was approved in accordance
with Stormwater Regulations set forth in Title 15A NCAC 2H 100 for low density
development option Under this proposed modification, the Row Boat Row
502div15ion would be revised from low density to high density development
option
Storm Water Management
The total area of Row Boat Row 5ubdivi5ion 15 approximately 4 9 acres The
proposed impervious built upon area would be 1 4 1 acres, corresponding to an
impervious ratio of 28 8% This project would be considered a high -density
project with deed restrictions limiting the amount of built upon area per lot in
accordance with the schedule shown in Exhibit A The existing 50115 are Newhan 4
fripp fine sands These 50115 are extremely well drained with an infiltration rate of
approximately 20-30 inches / hour Storm water runoff will be conveyed to
infiltration ba5in5 and underground infiltration trenches using 5heetflow The
Stormwater control systems will be located in recorded drainage easements No
impervious surfaces will be allowed in the Stormwater control area
The following justification for design pursuant to Section 111, "Required Items
Checklist" form SWU-103 Rev 3 99 15 noted below
Item n ) Due to the extremely high infiltration rate of the Newhan 4� fripp
sands the 25-year design storm event would be contained within the infiltration
basin shown on the plans (See attached calculations) Since the Soil
character15tlC5 of the entire area outside the infiltration basin consists of the
same highly permeable sands, an overflow vegetated filter does not appear to be
warranted
Item q ) Due to the extremely high infiltration rate of the Newhan 4� fripp
sands the 25-year design storm event would be contained within the infiltration
basin shown on the plans Since the Soil characteri5tic5 of the entire area outside
the infiltration ba5m con5i5t5 of the same highly permeable sands, a bypass for
off-line systems does not appear to be warranted In the unlikely event that the
infiltration basin nears capacity, the overflow volume would 5heetflow to adjacent
permeable sands This 15 preferred in lieu of concentrating runoff in a by-pass
system
Cape Fear Engmeermg
03/06/00
Project Narrahve_Hi_density_Rev2900 doc

The following J1.15t1fication for design pursuant to 5ection 111, "Required Items
Checklist" Form 5WU-107 Rev 3 99 15 noted below
Item t ) The design storm event would be contained within the underground
infiltration trench a5 shown on the plans (5ee attached calculations) 51nce the
5011 characteri5tic5 of the entire area outside the infiltration trench con5i5t5 of
highly permeable sands, an overflow vegetated filter does not appear to be
warranted
5edimentation f Er05ion Control
This project will disturb 1 7 acres of land 51lt fencing and vegetative 5wale5 will
be the primary controls for Sedimentation and erosion control The ve10atie5 in
the 5wale5 are IC55 than I-ft/5ec and will not be erosive All areas that will be
disturbed will be grassed or paved according to the schedules on the drawmg5
Bald Head Island Limited will be the financially re5pon5ible party for all land
ch5turbm6j activities
Cape Fear Engineering
03/01/00
Project Narrative_Hr_density_Rev2900 doc

CALCULATIONS l /
PROJECT BFlL.D HEF}D !,5LigNQ - Row 3(orIT Roy,.( DATE 672 /24100
CLIENT � /UC . PROJ NO 36o - 07
SUBJECT 0N)bE2E7?,OUNb DESIGNED BY CaT
T2evacN i+ : IT] - Zraq
D(ZAI%`J„c7a Bpsl" # . 1 1.1 s �IcaCs
=MPE2VIOJ.S °/0 y%.g
DRAi NA C1 E. roR_
0
IIQ C. HSTOR,M
VOI--. IZG0vl(ZEI� =
ll-1.
U U
-*
Ds -* Ry
VOL-, RG-00tvZED
VOL, p/tov1DE10 .
VO L_ , RE Q =
2oo4-1 c F
(D3)
R v - O, os- 4 0 o00 9 (-L )
Rv = O. os f 0o09(//7,0)
ti�yTizE�vGHES) = 205e C,F,
2Ooq cc G 2058cF = VOL,
CAPE FEAR
Engineering, Inc.
5040 New CenUe Or Suite O Wilmington NC 25403
TEL [phone] FAX [phone]M

CALCULATIONS
PROJECT 884-D iaGf)D Ts/AIV� Row RoNT ,Cow DATE 02�2y/co
CLIENT QgL.D ,ye<)T) 1SGy)lUI) 1l/&1,-rEl`, . =NC. PROJ NO -10d - 6"/
SUBJECT (/ivL)FK>QRooN4 T_,vF(['2e-J770n) 'T/ZFNCM DESIGNED BY C° Tc%r/c
rtREwcu }}$ IT1 - I T1y
SYSTEM D/ZAwDoWN
eo'Tri,
r,t F/LTRHT/Q,V �a r�
= 3p )ry
2 D ��N2
D2AW,D6w1U THE _ /e S f//2
CAPE FEAR
Engineering, Inc.
5040 New CerMm Or, Suite D Wlmiryton NC 26403
TEL [phone] PAX [phone]

PIPESTOR
_ ROW BOAT ROW oalos/mo
DRAINAGE BASIN-1
Infiltration Rate Q-(ctlL-7�ji
LA
Drainage area (Ac)=
115
Pipe size (ft) =
25
Storm event =
25
Trench width (ft) =
25
Length of pipe and trench=
420
Pipe area (U) =
49
Trench side height (ft) =
26
Stone area (ft2) =
00
A = Area of exfltration =
1649 ft2
Stone voids 40% (ft2) =
00
K = Coeff of permeability =
2 1 E-02 cm/sec
Available storage per ft =
49
I = 14draulic radient =
100
Total Available Storage
2061
Q/ =
115 cfshrench
Q/ =
449 d/ft2
TIME
(min)
ACCUMULATED
MASS INFLOW
(cubic feet
EXFILTRATION
VOLUME
wbic feet
STORAGE
REQUIREMENTS
(rabic feet)
AVAILABLE
STORAGE
(cubic feet
STORAGE SURPLUS
(DEFICIT)
(cubic feet)
5
1,088
344
744
2061
1,316
10
1898
687
1,211
2061
849
15
2 532
1,031
1 502
2061
559
20
3 046
1 374
1 672
2,061
389
25
3,474
1718
1756
2,061
304
30
3,838
2061
1,777
2,061
284
40
4 429
2,748
1,680
2061
380
60
5,274
4 123
1 151
2061
909
80
5 868
5,497
371
2061
1,690
100
6,320
6 871
(551)
2061
2,612
120
6,682
8245
It 563)
2,061
3623
180
7,467
12,368
(4 901)
2,061
6 962
240
8,007
16 490
(8 483)
2,061
10,544
360
8,753
24 735
(15,982)
2,061
18 043
720
10,019
49,471
(39,452)
2,061
41,513
1,440
11,322
98,942
(87,620)
2,061
89,681
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
INSY 1 xis 03/06/2000

INFILTRATION SWALE - Schueler Method
Design Calculations for Row Boat Row,
Bald Head Island, NC
FEAR
WCAPE
Engineering, Inc.
5040 New Cuntru Dnvu, Suitu D
Wdmmgtun N C 28403
Vwce (910) 79"584
Fax [phone]
E-mail cfeC-)bellsouth net
-L6912IB7a74/a1
Prot No 300-07
02/07/2000
300_07infiltration_basin2_REV2700 xis
1 of4
DainagePrea+Desgnation, y=-rk ,ems kjP N �DR�AIN�AGE;AREAr#2
Swale Desi nation "".°e$W;z
.,
Receiving stream class RIMSAIwaters
Onsde Area = 40`9�1
acres
Onsite Impervious Area = 0?32
acres
Offsite Area = 000
acres
Offsite Impervious Area = �0,00
acres
Total Area = 0 91 acres
Total Impervious Area = 0 32 acres
Percent Impervious = Impervious drainage area (acres)/Drainage area (acres) = 352
A) Determine volume to be controlled from storm (1 5 inch event for SA waters, 1 inch event for others)
Using the runoff volume calculations per "Simple Method" as described by Schueler (1987)
where Rv = runoff coefficient = storm runoff (inches) / storm rainfall (inches)
I = Percent Impervious = Drainage area (acres) / Impervious portion of the drainage area (acres)
Rv=005+0009(I)
Rv = 0 05 + 0 009 * 352 = 0 366 (in/in)
Volume to be controlled from the design storm event
where Design rainfall
Rv
Drainage Area
= 1 5 (in)
0 366 (in/in)
0 91 (acres)
Volume required (cf) = rainfall (in) x Rv (in/in) x Drainage Area (acre) x 1/12(feet/inches) x 43560 (sf/acre)
Vreq'd = 1 5 * 0 366 * 0 91 * 1/12 * 43560 = 1816 cubic feet

INFILTRATION SWALE - Schueler Method
Design Calculations for Row Boat Row,
Bald Head Island, NC
CAPE FEAR
Engineering, Inc.
5040 New Centre Drive Suite D
WJmmgtun N (' 28403
Vince [phone]
Fax [phone]
E-mail cte(q?bellsouth net
Determine the volume of the proposed swale
SWALE DATA
Cross -sectional Area (A) = bd +HdA2 = 8 00 sf
bottom width (b) = 5 0 ft
depth (d) = 1 ft
sideslope (H V) = 3 1
length of swale (L) = 250 ft
EASEMENT -WIDTH AS INDICATED
Prol No 300-07
02/07/2000
300_07infiitration_basin2_REV2700 As
2of4
INFILTRATI❑N SWALE
NOT TO SCALE
Volume proposed (cf) = Cross -sectional area (so x length of Swale (ft)
Vprop = 8 sf 250 ft = 2000 cubic feet
volume proposed to volume required from the design storm event
= 2000 cf > Vreq'd = 1816 cf
(OK -proposed Swale volume is greater than minimum required volume)

INFILTRATION SWALE - Schueler Method Prol No 300-07
Design Calculations for Row Boat Row, 02/07/2000
Bald Head Island, NC 300_07infiltration_basin2_REV2700 As
3of4
CAPE FEAR
V$/r Engineering, Inc.
5040 New Centre Dnve, Selte D
Wdmingtun N C 28403
Vuice [phone]
Fax [phone]
E-mail c1e(a)bells.uth net
B) Check swale infiltration rate for capacity to control the 25 year-24 hour storm event with no discharge
The average weighted coefficient of runoff is determined by
C ave = Sum[CA ] / Sum[A]
Description
AREA
C CA
Impervios Area
032
0�95
0 304
Pervious Area
059
0 15
0 089
Sum A =
091
Sum CA = 0 393
C ave = 091 /
0 393
= 0 431
Determine required discharge from 25 year-24 hour storm event
Q regd = Cave x I x A
Q regd = 0 43 * 0 33 * 0 91
where I = intensity for 25 year-24 hour storm event from Chart E-6
A = drainage area =
Cave = weighted coefficient of runoff
Check available rate of infiltration provided by proposed swale
where I = infiltration rate of soil (Sod Type = Newhan & Fripp sands)
A = bottom area of swale = 5 0 ft * 250 ft
Qavail = IA = 20 in/hr • 1250 sf • 1 ft/12 in * 1 hr/3600sec
rate of infiltration with runoff rate from the 25 year storm event
= 0 58 cfs > Q reqd = 0 13 cfs
(OK -No Discharge for 25 yr-24 hr storm event)
013 cfs
0433 in/hr
= 0 91 acres
= 043
0 58 cfs

INFILTRATION SWALE - Schueler Method Prot No 300-07
Design Calculations for Row Boat Row, 02/07/2000
Bald Head Island, NC 300_07infiltration_basm2_REV2700 As
4of4
CAPE FEAR
Engineering, Inc.
5040 Now Centre Drive, suite D
Wilmington N C 28403
Voice [phone]
Fax [phone]
E-mail creCa)bellsouth net
C) Check the 10 year-10 minute storm event to confirm that swale has capacity without flushing system
where I = intensity for 10 year-10 minute storm event from Chart E-6 = 6*3 in/hr
A = drainage area = = 0 91 acres
Cave = weighted coefficient of runoff = 043
Determine discharge rate from 10 year-10 minute storm event
Q 10-yr = Cave x I x A
Q 10-yr = 0 43 ` 63 ` 091 = 2 47 cfs
Determine discharge volume from 10 year-10 minute storm event
V 10-yr = Q 10-yr ` 10 min duration ` 60 sec/min = 1484 cf
Check available volume of the proposed infiltration swale
V avail = design volume (from swale data table) = 2000 cf
Compare design volume of infiltration swale to discharge volume from 10 year storm event of 10 minute duration
Vavail = 2000 cfs > V 10-yr = 1484 cfs
(OK-swale has adequate capacity for 10-yr event without flushing)
Compare infiltration system drawdown to maximum drawdown period of d days
T = V regd / Q avail 1 hr/ 3600 sec
T = 1816 cf / 0 58 cfs 1 hr/ 3600 sec = 0 87 hours
(OK- system draws down in less than 5 days)

INFILTRATION SWALE - Schueler Method
Design Calculations for Row Boat Row,
Bald Head Island, NC
CAPE FEAR
Engineering, Inc.
5040 New Cuntru Dnvu, Suite D
Wdmmgtun N ( 28403
Voice [phone]
Fax [phone]
E-mail cleC.?betNouth net
BASIN DATA
Prot No 300-07
02/07/2000
300_07infiltration_basin3_REV2700 As
1 of4
Onsde Area = 0�7,,0 acres
Onsde Impervious Area = 0 32 acres
Offsite Area = �, '.0100 acres
Offsite Impervious Area = A<."-'Wob acres
Total Area = 0 70 acres
Total Impervious Area = 0 32 acres
Percent Impervious = Impervious drainage area (acres)/Drainage area (acres) = 457
A) Determine volume to be controlled from storm (1 5 inch event for SA waters, 1 inch event for others)
Using the runoff volume calculations per "Simple Method" as described by Schueler (1987)
where Rv = runoff coefficient = storm runoff (inches) / storm rainfall (inches)
I = Percent Impervious = Drainage area (acres) / Impervious portion of the drainage area (acres)
Rv=005+0009(I)
Rv = 0 05 + 0 009 ' 457 = 0 461 (in/in)
Volume to be controlled from the design storm event
where Design rainfall
Rv
Drainage Area
= 1 5 (in)
0 461 (inhn)
0 70 (acres)
Volume required (cf) = rainfall (in) x Rv (in/in) x Drainage Area (acre) x 1/12(feethnches) x 43560 (sf/acre)
Vreq'd = 1 5 ` 0 461 ' 0 7 ' 1/12 ' 43560 = 1759 cubic feet

INFILTRATION SWALE - Schueler Method
Design Calculations for Row Boat Row,
Bald Head Island, NC
,777,7,72
CAPE FEAR
Engfneerfng, Inc.
5040 New Centre Drive, Suite D
Wdmingtun, N C 28403
Vu,ce [phone]
Fax [phone]
E-mail cfeCobel/south net
Determine the volume of the proposed swale
SWALE DATA
Cross -sectional Area (A) = bd +Hd^2 = 8 00 sf
bottom width (b) = 0 ft
depth (d) _1 ft
sideslope (H V) _ �3 1
length of Swale (L) = 40 ft
r AC71ARMT _ Wm ec iuniremn
Prot No 300-07
02/07/2000
300_07infiltration_basin3_REV2700 As
2of4
INFILTRATION SWALE
NOT TO SCALE
Volume proposed (cf) = Cross -sectional area (sf) x length of Swale (ft)
Vprop = 8 sf 240 ft = 1920 cubic feet
volume proposed to volume required from the design storm event
= 1920 cf > Vreq'd = 1759 cf
(OK -proposed swale volume is greater than minimum required volume)

INFILTRATION SWALE - Schueler Method
Design Calculations for Row Boat Row,
Bald Head Island, NC
Prot No 300-07
02/07/2000
300_07infiltration_basin3_REV2700 As
3of4
CAPE FEAR
Engfneerfng, Inc.
5040 New Centre Drive Suite D
Witmingtun N C 28403
Vuice [phone]
Fax [phone]
E-mail cfe(a)bellsouth net
B) Check swale infiltration rate for capacity to control the 25 year-24 hour storm event with no discharge
The average weighted coefficient of runoff is determined by
C ave = Sum[CA ] / Sum[A]
Description AREA C CA
Impervios Area 0 32 0195 0 304
Pervious Area 038 0 1'5 0 057
Sum A = 07 Sum CA = 0 361
Cave = 07/ 0361 =
;Q.7d:7
Determine required discharge from 25 year-24 hour storm event
Q regd = Cave x I x A
Qregd= 052` 033 ` 07
where I = intensity for 25 year-24 hour storm event from Chart E-6
A = drainage area =
Cave = weighted coefficient of runoff
Check available rate of infiltration provided by proposed swale
where I = infiltration rate of soil (Soil Type = Newhan & Fripp sands)
A = bottom area of swale = 5 0 ft ` 240 ft
Qavail = IA = 20 in/hr 1200 sf ` 1 ft/12 in ` 1 hr/3600sec
rate of infiltration with runoff rate from the 25 year storm event
= 0 56 cfs > Q reqd = 0 12 cfs
(OK -No Discharge for 25 yr-24 hr storm event)
0 12 cfs
= 0 33 in/hr
07 acres
= 052
= 20 in/hr
= 1200 sf
0 56 cfs

INFILTRATION SWALE - Schueler Method Prot No 300-07
Design Calculations for Row Boat Row, 02/07/2000
Bald Head Island, NC 300_07infiltration_basin3_REV2700 As
4of4
%
CAPE FEAR
Engineering, Inc.
5040 New Cuntre Dnve Suite D
Wdmingtun N C 28403
vuice [phone]
Fax [phone]
E-mad cleC-?beUsouth net
C) Check the 10 year-10 minute storm event to confirm that swale has capacity without flushing system
where I = intensity for 10 year-10 minute storm event from Chart E-6 = 6 3 in/hr
A = drainage area = = 0 7 acres
Cave = weighted coefficient of runoff = 0 52
Determine discharge rate from 10 year-10 minute storm event
Q 10-yr = Cave x I x A
Q 10-yr = 0 52 ' 63 07 = 2 27 cfs
Determine discharge volume from 10 year-10 minute storm event
V 10-yr = Q 10-yr ' 10 min duration ' 60 sec/min = 1365 cf
Check available volume of the proposed Infiltration swale
V avail = design volume (from swale data table) = 1920 cf
Compare design volume of Infiltration swale to discharge volume from 10 year storm event of 10 minute duration
Vavail = 1920 cfs > V 10-yr = 1365 cfs
(OK-swale has adequate capacity for 10-yr event without flushing)
Compare Infiltration system drawdown to maximum drawdown period of d days
T = V regd / Q avail 1 hr/ 3600 sec
T = 1759 cf / 0 56 cfs 1 hr/ 3600 sec = 0 88 hours
(OK- system draws down in less than 5 days)

INFILTRATION SWALE - Schueler Method
Design Calculations for Row Boat Row,
Bald Head Island, NC
FEAR
IFCAPE
Engineering, Inc.
5040 NeW centre Drive, suite D
Wdmmgtun N f 28403
Voice [phone]
Fd [phone]
E-mail cte(c?belNouth net
BASIN DATA
Prot No 300-07
02/07/2000
300_07infiltration_basin4_REV2700 As
1 of4
Dramage'Area Dees ig anonr,F''
Swale;Desi nation N,�1;':; w '
" rt DRAINAGExQREA 94,
xSW>4
e ;
Receiving stream class
RM4SAlwaters
Onsite Area =
acres
Onsite Impervious Area =
WPE225
acres
Offsite Area =
00acres
Im ervious Area =
_Offsite
00
acres
Total Area = 0 65 acres
Total Impervious Area = 0 22 acres
Percent Impervious = Impervious drainage area (acres)/Drainage area (acres) = 338
A) Determine volume to be controlled from storm (1 5 inch event for SA waters, 1 inch event for others)
Using the runoff volume calculations per "Simple Method" as described by Schueler (1987)
where Rv = runoff coefficient = storm runoff (inches) / storm rainfall (inches)
I = Percent Impervious = Drainage area (acres) / Impervious portion of the drainage area (acres)
Rv=005+0009(I)
Rv = 0 05 + 0 009 ' 338 = 0 355 (in/in)
Volume to be controlled from the design storm event
where Design rainfall
Rv
Drainage Area
1 5 (in)
= 0 355 (in/in)
= 0 65 (acres)
Volume required (co = rainfall (in) x Rv (in/in) x Drainage Area (acre) x 1/12(feethnches) x 43560 (sf/acre)
Vreq'd = 1 5 ' 0 355 ' 0 65 ' 1/12 ' 43560 = 1255 cubic feet

INFILTRATION SWALE - Schueler Method
Design Calculations for Row Boat Row,
Bald Head Island, NC
V
, CAPE FEAR
Engineering, Inc.
5040 New Centre Drive Suite D
Wilmmgfun N C 28403
Voice [phone]
Fan [phone]
E-mail c/e(.)bellcouth net
Determine the volume of the proposed Swale
SWALE DATA
Cross -sectional Area (A) = bd +HdA2
= 8 00 sf
bottom width (b)
=
5 0
ft
depth (d)
=
1
ft
sideslope (H V)
=
3
1
length of Swale (L)
=
160
ft
EASEMENT - WIDTH AS INDICATED
Prol No 300-07
02/07/2000
300_07infiltration_basin4_REV2700 xis
2of4
INLILTRATI❑N SWALE
NOT TO SCALE
Volume proposed (cf) = Cross -sectional area (so x length of swale (ft)
Vprop = 8 sf 160 ft = 1280 cubic feet
volume proposed to volume required from the design storm event
= 1280 cf > Vreq'd = 1255 cf
(OK -proposed swale volume is greater than minimum required volume)

INFILTRATION SWALE - Schueler Method Prot No 300-07
Design Calculations for Row Boat Row, 02/07/2000300_07infiltration_basin4_REV2700 As
Bald Head Island, NC 3of4
Z,3
CAPE FEAR
V777,4777,
Engineering, Inc.
5040 New Centro Drive Suite D
Wdminlitun N C 28403
voice [phone]
Fax [phone]
E-mail c1eC-)bedcouth net
B) Check Swale infiltration rate for capacity to control the 25 year-24 hour storm event with no discharge
The average weighted coefficient of runoff is determined by
C ave = Sum[CA ] / Sum[A]
Description
AREA
C
CA
Impervios Area
022
0`95
0209
Pervious Area
043
0 15
0 065
Sum A =
065
Sum CA =
0 274
C ave = 0 65 /
0 274
=
0 421
Determine required discharge from 25 year-24 hour storm event
Q regd = Cave x I x A
Q regd = 0 42 ' 0 33 ' 065
where I = intensity for 25 year-24 hour storm event from Chart E-6
A = drainage area =
Cave = weighted coefficient of runoff
Check available rate of infiltration provided by proposed swale
where I = infiltration rate of soil (Soil Type = Newhan & Fripp sands)
A = bottom area of swale = 5 0 ft ' 160 ft
Qavail = IA = 20 in/hr 800 sf ' 1 ft/12 in ' 1 hr/3600sec
Compare rate of infiltration with runoff rate from the 25 year storm event
= 0 37 cfs > Q reqd = 0 09 cfs
(OK -No Discharge for 25 yr-24 hr storm event)
t�rIrkZSiB
in/hr
0 65 acres
= 042
= 20 in/hr
= 800 sf
= 0 37 cfs

INFILTRATION SWALE - Schueler Method
Design Calculations for Row Boat Row,
Bald Head Island, NC
`:••;.•
CAPE FEAR
Engineering, inc-
5040 New Centre Dnvu Suite D
Wilmington, N C 28403
Voice [phone]
Fax [phone]
E-mail cfeOa?bellsouth net
Prot No 300-07
02/07/2000
300_07infiltration_basin4_REV2700 As
4of4
C) Check the 10 year-10 minute storm event to confirm that Swale has capacity without flushing system
where I = intensity for 10 year-10 minute storm event from Chart E-6 = N 6 3 m/hr
A = drainage area = = 0 65 acres
Cave = weighted coefficient of runoff = 042
Determine discharge rate from 10 year-10 minute storm event
Q 10-yr = Cave x I x A
Q 10-yr = 042 ' 63 ' 065 = 1 72 cfs
Determine discharge volume from 10 year-10 minute storm event
V 10-yr = Q 10-yr ' 10 min duration ' 60 sec/min = 1034 cf
Check available volume of the proposed infiltration swale
V avail = design volume (from swale data table) = 1280 cf
Compare design volume of infiltration swale to discharge volume from 10 year storm event of 10 minute duration
Vavail = 1280 cfs > V 10-yr = 1034 cfs
(OK-swale has adequate capacity for 10-yr event without flushing)
Compare infiltration system drawdown to maximum drawdown penod of d days
T = V regd / Q avail 1 hr/ 3600 sec
T = 1255 cf / 0 37 cfs 1 hr/ 3600 sec = 0 94 hours
(OK- system draws down in less than 5 days)

COASTAL ENVIRONMENTAL SERVICES CO &* f " ?
ENVIRONMENTAL CONSULTING
7151 MARKET STREET WILMINGTON NC 28405 [phone] FAX [phone]
Mr Dan Weeks
Director of Planning
Bald Head Island Planning Department
P 0 Box 3069
Bald Head Island, NC 28461
RE Soil Borings & On -site Soils Investigations
Harbour Village Area
Bald Head Island, Brunswick County, NC
Dear Mr Weeks
April 8, 1997
In concert with your recent request, relayed to us through Mr Perry G Davis, RLS/PE
with Atlantic Coast Design, Inc , Wrightsville Beach, NC, we are pleased to present
this letterform report of findings and conclusions from soils investigations conducted at
the subject site
SITE LOCATION/SCOPE OF WORK
The focus of the investigations were centered in and around the boat basin/marina that
is surrounded by the Harbour Village area on Bald Head Island, Brunswick County, NC
On April 1, 1997, a field hydrologist from Coastal Environmental Services Company
(CESCO), working under the direction and guidance of Mr Perry G Davis, RLS/PE
with Atlantic Coast Design, Inc, developed twenty three (23) hand auger soil borings
at the subject site Soil samples removed at one foot depth intervals in the boreholes
were classified as to soil type and texture The wells were developed into the water
table and water level readings were taken in the open boreholes using an electronic
sensor Two (2) of the soil borings (B-7 and B-12) were converted to temporary
groundwater monitoring wells or piezometers (TMW-1 and TMW-2, respectively) for the
purposes of collecting long term information on groundwater levels under varying
weather (rainfall) and tidal conditions This was accomplished by inserting a 2 inch
diameter PVC well screen (0 01 slot size) into the borehole along with a solid PVC riser
extending above the ground surface The wells were installed such that the screened
interval spanned the water table All of the borings were located using survey
techniques and the water level readings were converted to groundwater elevations in
terms of mean sea level (M S L ) by referencing the levels to a known benchmark
RESULTS
The locations of the 23 borings and the 2 temporary wells are shown on Figure 1
(NOTE A full size survey plat of the study area is also attached to this report Figure 1
IIRONMENTAL REMEDIATIONUDPERMITS - CLOSURES D
WETLANDS DELINEATIONS ITIRISK ASSESSMENTS - LIST SITE S PREPARATION

Mr Dan Weeks
April 8, 1997, Page 2
and the full size survey plat also includes a table showing the exisitmg ground elevation
and water level elevation at each data point In addition a second table shows the top
of casing elevations and water levels in the temporary wells on April 1, 1997 Table 1
shows the results of the soils determinations and the approximate location of the
capillary fringe depth in each borehole The capillary fringe depth is the portion of the
soil column immediately above the water table
DISCUSSION OF FINDINGS/CONCLUSIONS
Soils on this site consist of a fine grained tan sand Some of the borings show some
minor variations in soil coloration/texture and even some minor soil mottling due to iron
precipitation from water table fluctuations The soil types encountered are very typical
of the sands of marine depositional origin found commonly on the NC barrier islands
Water table depths at this site are m the range of 0 2' to 2 7' M S L Groundwater
levels in the test wells TMW-1 and TMW-2 were 0 79' and 0 82' M S L , respectively
Water levels in the test wells were noted to be affected by tidal fluctuations
For purposes of design of infiltration basins for stormwater control, the sod types
encountered in this investigation can be expected to have infiltration rates in the
general range of 17 to 20 inches per hour (43 to 51 cm/hr) This conclusion is based in
part on the results of detailed investigations of infiltration rates at the same site as
determined by other investigators (See Chescheir, G M, et al (1988) "Analysis of
Stormwater Infiltration Ponds on the Barrier Islands" in Design of Stormwater Control
Facilities, PENC, Raleigh, NC)
We trust that the information in this report meets your needs at this time Please call
me if you have any questions concerning the information in this report
Sincerely,
COASTAL ENVIRONMENTAL SERVICES COMPANY
William E Burnett
Senior Environmental Scientist
Registered Environmental Professional
Attachments '
cc Mr Perry G Davis, RLS/PE, Atlantic Coast Design, Inc

TABLE 1
RESULTS OF SOIL BORINGS AND ON SITE SOILS INVESTIGATIONS
HARBOUR VILLAGE AREA
BALD HEAD ISLAND, BRUNSWICK COUNTY, NC
BORING NUMBER/DEPTHS BLS LITHOLOGIC DESCRIPTION----------
B-1 0-6' Fine grain tan sand
(Capillary fringe @ 5 5' BLS)
B-2 0-6' Fine grain tan sand
(Capillary fringe @ 5 5' BLS)
B-3
0-5'
Fine grain tan sand
(Capillary fringe @ 5' BLS)
B-4
0-4'
Fine grain tan sand
4-5'
Light brown sand
(Capillary fringe @ 4 5' BLS)
B-5
0-6'
Fine grain tan sand
(Capillary fringe @ 6' BLS)
B-6
0-6'
Fine grain tan sand
(Capillary fringe @ 5 5' BLS)
B-71TMW-1
0-10,
Fine grain tan sand
(Capillary fringe @ 8 5' BLS,
TMW-1 Installed to 10' BLS)
m
B-11
0-5'
Fine grain tan sand
(Capillary fringe @ 4 5' BLS)
0-5' Fine gram tan sand
5-6' Light brown sand
6-12' Tan sand
(Capillary fringe @ 11 5' BLS)
0-5' Fine grain tan sand
(Capillary fringe @ 4 5' BLS)
0-5' Fine gram tan sand
(Capillary fringe @ 4 5' BLS)

TABLE 1, CONTINUED
BORING NUMBER/DEPTHS BLS LITHOI OGIC DESCRIPTION -----
B-12/TMW-2 0-10, Fine grain tan sand
(Capillary fringe @ 8' BLS
TMW-2 Installed @ 10' BLS)
B-13 04 Fine gram tan sand
4-6 Light brown sand
(Capillary fringe @ 5 5' BLS)
B-14 0-1' Dark brown sandy loam to
light brown sand
1-2' Light brown sand
2-4' Tan sand
4 6' Tan sand with orange mottling
(Capillary fringe @ 6' BLS)
B-15 0-5' Fine grain tan sand
5-6' Tan sand with shell fragments
(Capillary fringe @ 6' BLS)
B-16 0-5' Fine grain tan sand
5-6' Tan sand with orange mottling
(Capillary fringe @ 5 5' BLS)
B-17
ME
ME
Fim
M
Fine grain tan sand
(Capillary fringe @ 6' BLS)
0-5' Fine grain tan sand
5-6' Tan sand with orange mottling
(Capillary fringe @ 5 5' BLS)
0-6' Brown to fine gram tan sand
(Capillary fringe @ 5 5' BLS)
0-5' Fine grain tan sand
(Capillary fringe @ 4 5' BLS)

TABLE 1. CONTINUED
BORING NUMBER/DEPTHS BLS LITHOLOGIC DESCRIPTION ------------ -----
B-21 0-1' Light brown sand with marl
1-3 Fine grain tan sand
3-5' Fine grain tan sand with orange mottling
(Capillary fringe @ 4' BLS)
B-22 0-4' Fine grain tan sand
4-5' Tan sand with orange mottling
(Capillary fringe @ 4 5' BLS)
B-23 0-4' Fine grain tan sand
(Capillary fringe @ 3' BLS)
NOTES
1 BLS = Below the land surface
2 TMW = Temporary groundwater monitoring well
3 Capillary fringe = Depth in sod profile immediately above the water table

RI1143PG0916
9Ce-4�ecvr-W
BC 1079 1%0496
c'LEi! �Cn REf�I$TFATi N
POWER OF ATTORNEY
96 MAR 20 PM 4t 12
THE STATE OF NORTH CAROLINA
AL4 J. lr,�, hSON
COUNTY OF BRUNSWICK PEGIS�CP, Or' GEEOS
311 �,q1UK CGUNrL N C.
KNOW ALL MEN BY THESE PRESENTS that BALD HEAD ISLAND LIMITED, a Texas
Limited Partnership (hereinafter referred to as "Limited') hereby makes, constitutes and appoints
KENNETH M KIRKMAN of Brunswick County, North Carolina, its true and lawful attomey-in-fact for
it and in its name, place and stead and on its behalf, giving unto the said KENNETH M KIRKMAN
full power to act in the name, place and stead in any way it could do if it were personally present with
respect to the following matters as each of them is defined in Chapter 32A of the North Carolina
General Statutes to the extent that it is permitted by law to act through an agent Real Property
transactions, personal property transactions, banking transactions, business operating transactions,
insurance transactions, Social Security and unemployment matters and transactions and tax matters
and transactions
Limited does, without limiting the foregoing, specifically authorize the said attomey-in-fact,
in its name and on its behalf, to execute contracts, deeds, releases, closing documents and other
agreements and documents for and relating to the sale and conveyance of property on Bald Head
Island, North Carolina The power granted herein shall be deemed continuing and relate as fully to
any property which Limited may hereafter acquire as to any property which it now owns The powers
granted to the said attomey-in-fact may be exercised from time to time and repeatedly
This Power of Attorney shall remain effective and in full force and effect until a document
revoking said Power of Attorney is duly recorded in the Office of the Register of Deeds of Brunswck
u t�Tlartfi'C2ru a '
,., lHM VU
n E C E I V E
IUnUS ®G ,�• 3l a�
MAR.0 7 2000 9
1 �7�•�v � afl
DWQ {
PROJ A ��

W 1 143 PG0917
BR 1079 M0497
IN WITNESS WHEREOF, the parties hereto have hereunto set their hands and seals, or if
corporate, signed by its duly authorized officers and its seal to be hereunto affixed by authority of its
Board of Directors, this 1st day of February 1996
BALD HEAD ISLAND LIMITED (S EA L)'"
A Texas Limited Partnership
ATTEST- By MITCHELL ISLAND INVESTMENTS, INC
General Partner
f
By
Secret! ar P Vitale
Z� Vesr
Executive Vice President
(S s
(CorPoc-a}� y�i
\ Seal #Kt Pell,eneral PWartne
Marl litchell, General Partner
STATE OF TEXAS
COUNTY OF MONTGOMERY
I, S%J 0. 14 . (A Pic 1U , a Notary Public in and for the County and State aforesaid
do hereby certify that John D Planchard, personally appeared before me this day and acknowledged
that he is Secretary of MITCHELL ISLAND INVESTMENTS, INC, and that, by authority duly given
and as the act of the corporation, the foregoing instrument was signed in its name and by its
Executive Vice President, sealed with its corporate seal, and attested by himself as its Secretary
WITNESS my hand and notanal seal this the 1 aTl+ day of M,4Q c I4 1996
i
Notaryblic, St of Texas
04

1K 1 143 PG0918
BK 1079 K0498
STATE OF NORTH CAROLINA
COUNTY OF BRUNSWICK
1, 911 %AW-ti T (?AAArel I , a Notary Public for the State and County aforesaid, do
certify that M. Kent Mitchell, individually and as general partner of Bald Head Island Limited, a
Texas limited partnership, personally appeared before me this day and acknowledged the due
execution of the foregoing instrument
WITNESS my hand and notanal seal, this the SA day of %i' a L4 1995
4iotary Public
My Commission Expires
STATE OF NORTH CAROLINA
COUNTY OF BRUNSWICK
/z-//- 96
1, 0, 44" 6N re ll . a Notary Public for the State and County aforesaid, do
certify that Mark D. Mitchell, individually and as general partner for Bald Head Island Limited, a
Texas limited partnership, personally appeared before me this day and acknowledged the due
execution of the foregoing instrument
innTMESS my hand and notanal seat, this the S'uday of ��1� 1995
My Commission Expires 12-11-%
STATE OF NORTH CAROLINA
COUNTY OF BRUNSWICK
The Foregoing (or annexed) Certificate(s)
Notary(res) Public is (are) Certified to be Correct
Thrs Instrument was filed for Registration on this 20" Day of /M Ci (-C.) 1996,
in the Book and Page shown on the Fust Page hereof ((���
ROBERT J. ROBIJSONJ Register of Deeds

��;�,
CAPE FEAR
��
Engineering, Inc.
5040 New Centre Drive, Suite D
Wilmington, N C 28403
Voice [phone]
l
Fax [phone]
11
E-mail cteCDbellsouth net
s t
TO Scott Vinson
ATTENTION
APR 0 6 2000
Transmittal
DATE 4/6/00
PROJECT NO 300-07
RE Row Boat Row @ Bald Head Island
Original Supplements
Quantity Drawing No Description
4 Original infiltration and basin supplements
REMARKS
cc File CAPE FEAR Engineering, Inc
Signed
L Wdm6Std Fa stcfe turns dx

�,
y���a��r,�it ,�
t �,� '��-
:,
,.
<�n ,
ry'
F �
Y��r
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1 �
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State of North Carolina ; ')
Department of Environment W� - „o_
and Natural Resources `\
Wilmington Regional Office ' \ U"'"1 ��
James B Hunt, Jr., Governor
Bill Holman, Secretary g
Division of Water Quality
February 10, 2000
NCDENR
NcR C . OUNA DEPARTMENT OF
ENVIRONMENT AND N. RA RESOURCES
Mr Kent Mitchell, Owner
Bald Head Island Limited
PO Box 3069
Bald Head Island, NC 28461
Subject ACKNOWLEDGMENT OF RECEIPT AND
REQUEST FOR ADDITIONAL INFORMATION
Stormwater Project No SW8 980434MOD
Row Boat Row
Brunswick County
Dear Mr Mitchell
The Wilmington Regional Office received a Stormwater Management Permit Application for Row Boat
Row on December 7, 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
1 For the infiltration swale to function properly for an extended amount of time, please provide
3-4 inlets into the swale for runoff from the eastern half of the project Also please provide for
positive drainage from the one pipe that is proposed so that water does not pond in the southern
end of the grassed swale When infiltration basins are proposed we require a spreading
mechamsm so that the entire basin is used for infiltration With half of the project draining to
one end of the infiltration system the distribution requirement is not being met
i Please note that this request for additional information is in response to a preliminary review The
equested information should be received by this Office prior to March 10, 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 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]
Sincerely,
Scott Vinson
Environmental Engineer
RSS/sav S \WQS\STORMWAT\ADDINFO\980434 FEB
cc Scott Vinson
Perry Davis, P E
127 Cardinal or Ext., Wilmington, North Carolina 28405 Telephone [phone] FAX [phone]
An Equal Opportunity Affirmative Action Employer 50% recycled/10% post -consumer paper

CAPE FEAR
Engineering, Inc.
5040 Ncw Centre Dnvc Suck D
Wilrrunr7ton N G 2U403
VO106 (910) 79O-U584
Fdx [phone]
E-rnad cic(,Jbclltiauth tier
TO NCDEHNR
127 Cardinal Drive Ext
Wilmington, NC 28403
ATTENTION Scott Vinson
JAN -
Transmittal
DATE January 5, 2000
PROJECT NO 300-07
RE
Modification to Permit SW8 980434
Row Boat Row, Bald Head Island, NC
Quantity Drawing No Description
2 SWEC-1 I - Revised Stormwater Management, Sedimentation and Erosion Control Plan
REMARKS On December 30, 1999 Row Boat Row was submitted to you with a request for permit
modification to reflect storm water management based on high density development
Please replace the drawings transmitted on 12/30/99 with the enclosed plans The new plan is
revised to reflect "as -built" typical road sections No other changes have been made This revision does not
affect the calculations or built upon areas shown in the application submitted on December 30, 1999
CC Woody Fulton w/o attachments
Ken Kirkman w/o attachments
Andy Sayre w/o attachments
Ken Stewart w/o attachments
John Haley
File
APE FEAR En In ering, Inc
Signed
StepheYi McAree
P UOOU00-07WdminUransmillalsYran5010400Vinson doe

i
CAPE FEAR
Engineering, Inc.
5040 New Centre Drive Suite D
Wilmington, N C 28403
Voice (910) 790-8.584
Fax [phone]
E-mail cfe@bellsouth net
To NCDEHNR
127 Cardinal Drive Ext
Wilmington, NC 28403
ATTENTION Scott Vinson
DEC 3 0 1999
Transmittal
DATE December 30, 1999
PROJECT NO 300-07
RE
Modification to Permit SW8 980434
Row Boat Row, Bald Head Island, NC
Quantity
Drawing No
Description
1
- original and copy- Application for Modification to SW8 980434 permit
1
- copy — Form SWU-103, "Infiltration Basin Supplement'
1
- $420 Application fee I
1
- Project Narrative and supporting design calculations
2
SWEC-1
- Revised Stormwater Management, Sedimentation and Erosion Control Plan
1
- Soil report prepared by Coast Environmental Services and dated April 8, 1997
1
LOG-1
- Bore Hole and Test Well Log
Im 0EBVE
PpW a ma
REMARKS Attached is a submittal package for modifications to the approved Row Boat Row
Stormwater Management Permit SW8 980434 The proposed modifications include re -designating the
development from the low density option to the high density option pursuant to Rule 1005 and providing
infiltration system measures consistent with a high density designation
CC Woody Fulton w/o attachments
Ken Kirkman w/o attachments
Andy Sayre w/o attachments
Ken Stewart w/o attachments
John Haley
File
APE FEAR Engineering,
"Inc
Signed //W cvu a e�
Stephdfh McAree
P QW13300-0T dmm\Vansmi9mis%Uansl23099_Vinwn dm
5-
(,f7 7 go K 3 f mil.

COASTAL ENVIRONMENTAL SERVICES CO
ENVIRONMENTAL CONSULTING
7151 MARKET STREET WILMINGTON NC 28405 [phone] FAX [phone]
Mr Dan Weeks April 8, 1997
Director of Planning
Bald Head Island Planning Department
P 0 Box 3069
Bald Head Island, NC 28461 STO RMATE n
�p
RE Soil Borings & On -site Soils Investigations
u�Nj H C E I V ED
Harbour Village Area DEC 3 01999
Bald Head Island, Brunswick County, NC
DWQ
Dear Mr Weeks PRQIi®
In concert with your recent request, relayed to us through Mr Perry G Davis, RLS/PE
with Atlantic Coast Design, Inc , Wrightsville Beach, NC, we are pleased to present
this letterform report of findings and conclusions from soils investigations conducted at
the subject site
SITE LOCATION/SCOPE OF WORK
The focus of the investigations were centered in and around the boat basin/marina that
is surrounded by the Harbour Village area on Bald Head Island, Brunswick County, NC
On April 1, 1997, a field hydrologist from Coastal Environmental Services Company
(CESCO), working under the direction and guidance of Mr Perry G Davis, RLS/PE
with Atlantic Coast Design, Inc, developed twenty three (23) hand auger soil borings
at the subject site Soil samples removed at one foot depth intervals in the boreholes
were classified as to soil type and texture The wells were developed into the water
table and water level readings were taken in the open boreholes using an electronic
sensor Two (2) of the soil borings (8-7 and B-12) were converted to temporary
groundwater monitoring wells or piezometers (TMW-1 and TMW-2, respectively) for the
purposes of collecting long term information on groundwater levels under varying
weather (rainfall) and tidal conditions This was accomplished by inserting a 2 inch
diameter PVC well screen (0 01 slot size) into the borehole along with a solid PVC riser
extending above the ground surface The wells were installed such that the screened
interval spanned the water table All of the borings were located using survey
techniques and the water level readings were converted to groundwater elevations in
terms of mean sea level (M S L ) by referencing the levels to a known benchmark
RESULTS
The locations of the 23 borings and the 2 temporary wells are shown on Figure 1
(NOTE A full size survey plat of the study area is also attached to this report Figure 1
ENVIRONMENTAL
REMEDIATION - PERRMITSISK ASCLOSURES D
WETLANDS DELINEATIONSSESSMENTS - LIST A/EI
SITES PREPARATION

Mr Dan Weeks
April 8, 1997, Page 2
and the full size survey plat also includes a table showing the exisiting ground elevation
and water level elevation at each data point In addition a second table shows the top
of casing elevations and water levels in the temporary wells on April 1, 1997 Table 1
shows the results of the soils determinations and the approximate location of the
capillary fringe depth in each borehole The capillary fringe depth is the portion of the
sod column immediately above the water table
DISCUSSION OF FINDINGS/CONCLUSIONS
Soils on this site consist of a fine grained tan sand Some of the borings show some
minor variations in sod coloration/texture and even some minor sod mottling due to iron
precipitation from water table fluctuations The soil types encountered are very typical
of the sands of marine depositional origin found commonly on the NC barrier islands
Water table depths at this site are in the range of 0 2' to 2 7' M S L Groundwater
levels in the test wells TMW-1 and TMW-2 were 0 79' and 0 82' M S L , respectively
Water levels in the test wells were noted to be affected by tidal fluctuations
For purposes of design of infiltration basins for stormwater control, the sod types
encountered in this investigation can be expected to have infiltration rates in the
general range of 17 to 20 inches per hour (43 to 51 cm/hr) This conclusion is based in
part on the results of detailed investigations of infiltration rates at the same site as
determined by other investigators (See Chescheir, G M, et al (1988) "Analysis of
Stormwater Infiltration Ponds on the Barrier Islands" in Design of Stormwater Control
Facilities, PENC, Raleigh, NC)
We trust that the information in this report meets your needs at this time Please call
me if you have any questions concerning the information in this report
Sincerely,
COASTAL ENVIRONMENTAL SERVICES COMPANY
William E Burnett
Senior Environmental Scientist 01
Registered Environmental Professional
Attachments '
cc Mr Perry G Davis, RLS/PE, Atlantic Coast Design, Inc

TABLE 1
RESULTS OF SOIL BORINGS AND ON SITE SOILS INVESTIGATIONS
HARBOUR VILLAGE AREA
BALD HEAD ISLAND, BRUNSWICK COUNTY, NC
BORING NUMBER/DEPTHS BLS LITHOLOGIC DESCRIPTION-----------------
B-1 0-6' Fine grain tan sand
(Capillary fringe @ 5 5' BLS)
B-2 0-6' Fine grain tan sand
(Capillary fringe @ 5 5' BLS)
B-3
0-5'
Fine grain tan sand
(Capillary fringe @ 5' BLS)
B-4
0-4'
Fine grain tan sand
4-5'
Light brown sand
(Capillary fringe @ 4 5' BLS)
B-5
0-6'
Fine gram tan sand
(Capillary fringe @ 6' BLS)
B-6
0-6'
Fine gram tan sand
(Capillary fringe @ 5 5' BLS)
B-7/TMW-1
0-10,
Fine gram tan sand
(Capillary fringe @ 8 5' BLS,
TMW-I Installed to IO' BLS)
B-8 0-5' Fine gram tan sand
(Capillary fringe @ 4 5' BLS)
B-g 0-5' Fine grain tan sand
5-6' Light brown sand
6-12' Tan sand
(Capillary fringe @ 11 5' BLS)
B-10 0-5' Fine gram tan sand
(Capillary fringe @ 4 5' BLS)
B-11 0-5' Fine grain tan sand
(Capillary fringe @ 4 5' BLS)

TABLE 1, CONTINUED
BORING N MBER/DEPTHS BLS LITHOI OGIC DESCRIPTION --- ---------- -
B-12/TMW-2 0-10, Fine grain tan sand
(Capillary fringe @ 8' BLS
TMW-2 Installed @ 10' BLS)
B-13 04 Fine grain tan sand
4-6 Light brown sand
(Capillary fringe @ 5 5' BLS)
B-14 0-1' Dark brown sandy loam to
light brown sand
1-2' Light brown sand
2-4' Tan sand
4-6' Tan sand with orange mottling
(Capillary fringe @ 6' BLS)
B-15 0-5' Fine grain tan sand
5-6' Tan sand with shell fragments
(Capillary fringe @ 6' BLS)
B-16 0-5' Fine grain tan sand
5-6' Tan sand with orange mottling
(Capillary fringe @ 5 5' BLS)
B-17
mug
: e
M
Fine grain tan sand
(Capillary fringe @ 6' BLS)
0-5' Fine grain tan sand
5-6' Tan sand with orange mottling
(Capillary fringe @ 5 5' BLS)
0-6' Brown to fine grain tan sand
(Capillary fringe @ 5 5' BLS)
0-5' Fine grain tan sand
(Capillary fringe @ 4 5' BLS)

TABLE 1. CONTINUED
BORING NUMBER/DEPTHS BLS LITHOLOGIC DESCRIPTION ------------ -----
B-21 0-1' Light brown sand with marl
1-3 Fine grain tan sand
3-5' Fine grain tan sand with orange mottling
(Capillary fringe @ 4' BLS)
B-22 0-4' Fine grain tan sand
4-5' Tan sand with orange mottling
(Capillary fringe @ 4 5' BLS)
B-23 0-4' Fine grain tan sand
(Capillary fringe @ 3' BLS)
NOTES
1 BLS = Below the land surface
2 TMW = Temporary groundwater monitoring well
3 Capillary fringe = Depth in soil profile immediately above the water table

It
DE51GN REPORT
FOR
ROW BOAT ROW SUBDIVISION
PREPARED FOR
DALD HEAD 15LAND LIMITED
Revised November 30, 1999
M
CAPE FEAR ENGINEERING, INC
5040 New Centre Drive, 5uite D
WILMINGTON, NC 25403
[phone]
Cape Fear Engineering
12/16/99
Project Nanativc_I1i_dursrty_Rev121699 doe
nE C E 9 V ED
IIIIInUOS DEC 3 D 1999
PRW #
DWO
12 �D 9q1
1111//It,�
? •pF-S'Zs �9
SEAL
20563

t
PROJECT NARRATIVE
General
Under 5tormwater Management Permit #5W8 950434, Row Boat Row, an 1 B-
lot single family 5Ubd1V151or1 on Bald Head Island, NC, was approved in accordance
with 5tormwater Regulations set forth in Title 15A NCAC 2H 100 for low density
development option Under this proposed modification, the Row Boat Row
5ubdivi5ion would be revised from low density to high density development
option
Storm Water Management
The total area of Row Boat Row subdivision 15 approximately 4 9 acres The
proposed impervious built upon area would be 14G acres, correspondmg to an
impervious ratio of 29 8% This project would be considered a high -density
project with deed restrictions limiting the amount of built upon area per lot in
accordance with the schedule shown in Exhibit A The ex15tmg soils are Newhan #
Fripp fine sands These soils are extremely well drained with an infiltration rate of
approximately 20-inche5 / hour Storm water runoff will be conveyed to an
infiltration basin u5mg a combination of 5heetflow, vegetated 5wale5, and storm
pipe The 5tormwater control system will be located in recorded dramage
easements and will dl5charge to the common area to the west of the project No
impervious surfaces will be allowed in the 5tormwater control area
The following justification for design pursuant to 5ection III, "Required Items
Checklist" Form 5WU- 103 Rev 3 99 15 noted below
Item n ) Due to the extremely high infiltration rate of the Newhan * Fripp
sands the 25-year design storm event would be contained within the infiltration
basm shown on the plans (See attached calculations) 5mce the 5011
characteristics of the entire area outside the infiltration basm con515t5 of the
same highly permeable sands, an overflow vegetated filter does not appear to be
warranted
Item q ) Due to the extremely high infiltration rate of the Newhan * Pripp
sands the 25-year design storm event would be contained within the infiltration
basm shown on the plans 5mce the Soil characteristics of the entire area outside
the infiltration basm consists of the same highly permeable sands, a bypass for
off-line systems does not appear to be warranted In the unlikely event that the
infiltration basm nears capacity, the overflow volume would 5heetflow to adjacent
permeable sands This 15 preferred in lieu of concentrating runoff in a by-pass
system
Cape Fear Engineering
12/16/99
Project Nanattvc_IL_dcnsny_Rcv121699 doc

5edimentation 4- Ero51on Control
This project will disturb 1 7 acres of land 51lt fencing and vegetative 5wale5 will
be the primary controls for Sedimentation and erosion control The velocities in
the 5wale5 are 1e55 than I-ft/5ec and will not be er05ive All areas that will be
disturbed will be grassed or paved according to the schedules on the drawings
Bald head Island Limited will be the financially re5pon5ible party for all land
disturbing activities
Cape Fear Engineering
12/16/99
Project Narratrve_Hi_densny_Rev 121699 doc

INFILTRATION SWALE - Schueler Method Prol No 300-07
12/27/
Design Calculations for Row Boat Row,
infiltration -basin
As
Bald Head Island, NC 1of4
CAPE FEAR
Englneertng, Inc
5040 Now Corrtrc Dave Surte D
Wilming1w, N (' 28403
Vwct (990) 790 H5494
Fax [phone]
E-mail cYcC lbc/IsuutYr net
BASIN DATA
„ t r s DRAINAGEfAREA�#,1^-A,
` Y
Drainageli .;Desidnation �'. �u F ,t„ ; , ' > . "
$waleb'esl nati6n ° t. =i-,fi, wg cr
SAlwaters
Receiving stream class t ='
I-a,^'st 3+SOracres
Onsite Area =
�,`�c�1�46 acres
Onsite Impervious Area100 acres
Offsde Area = 4111+0+00 acres
Offsite Impervious Area =
3 50 acres
Total Area = 1 46 acres
Total Impervious Area = 41 7
Percent Impervious = Drainage area (acres) / Impervious drainage area (acres) _
A) Determine volume to be controlled from storm (1 5 inch event for SA waters, 1 inch event for others)
Using the runoff volume calculations per "Simple Method" as described by Schueler (1987)
where Rv = runoff coefficient = storm runoff (inches) I storm rainfall (inches)
I = Percent Impervious = Drainage area (acres) / Impervious portion of the drainage area (acres)
Rv = 0 05 + 0 009(I) - 0 425 (in/in)
Rv= 005+0009' 417 -
Volume to be controlled from the design storm event
where Design rainfall
Rv
Drainage Area
1 5 (in)
= 0 425 (in/in)
3 50 (acres)
Volume required (cf) = rainfall (in) x Rv (in/in) x Drainage Area (acre) x 1/12(feeUinches) x 43550 (sf/acre)
Vreq'd = 1 5 ' 0 425 " 3 5 " 1 /12 ` 43560
8108 cubic feet

INFILTRATION SWALE - Schueler Method Prot No 300-07
99
Design Calculations for Row Boat Row, n—bas n As
infiltration —basin As
Bald Head Island, NC 2of4
4�pCAPE FEAR
Englneering, Inc.
5040 Now r.Otltr. Onvo Sutto D
Wdtmngtur, N U 2840d
V,,,,, [phone]
F� [phone]
E-toad Ge(}belRuuth "ct
Determine the volume of the proposed swale
SWALE DATA
Cross -sectional Area (A) = bd +Hd^2
= 1272 sf
bottom width (b)
=
ft
depth (d)
J'1670
ft
sideslope (HV)
_ °
1
length of swale (L)
_
ft
EASEMENT - WIDTH AS INDICATED
INFILTRATION SWALE
NOT TO SCALE
Volume proposed (cf) = Cross -sectional area (sf) x length of swale (ft) 8522 cubic feet
Vprop = 12 72 sf 670 ft
Compare volume proposed to volume required from the design storm event
8522 cf > Vreq'd = 8108 cf
(OK -proposed swale volume is greater than minimum required volume)

INFILTRATION SWALE - Schueler Method Prol No 300-07
12/27/1999
Design Calculations for Row Boat Row, infiltration—basin
Bald Head Island, NC nfiltration—basms Axis
3of4
CAPE FEAR
Engfneerfng, Inc.
5040 Now Q�ntro Dr/✓o Sumo D
W.An.rngtun N (' 28403
V,,,00 [phone]
Fex (910) 790-8r8J
E-mad c fo(10t,01suuth nc[
B) Check Swale infiltration rate for capacity to control the 25 year-24 hour storm event with no discharge
The average weighted coefficient of runoff /s determined by
C ave = Sum[CA ] / Sum[A]
Description
AREA C
CA
Impervios Area
1 46 r`0 951
1 387
Pervious Area
204 0°15{
0 306
Sum A =
35 Sum CA =
1 693
C ave = 3 5/
1 693 =
0 484
Determine required discharge from 25 year-24 hour storm event
Q regd = Cave x I x A
Qregd= 048' 033 ` 35
where I = intensity for 25 year-24 hour storm event from Chart E-6
A = drainage area =
Cave = weighted coefficient of runoff
Check available rate of infiltration provided by proposed swale
where I = infiltration rate of soil (Soil Type = Newhan & Fripp sands)
A = bottom area of Swale = 7 0 ft " 670 ft
Qavail = IA = 20 in/hr 4690 sf 1 fU12 in " 1 hr/3600sec
rate of infiltration with runoff rate from the 25 year storm event
2 17 cfs > Q reqd = 0 56 cfs
(OK -No Discharge for 25 yr-24 hr storm event)
�o,,,, v*- desl� voluw+e 4,0
= 0 56 cfs
0,331 in/hr
3 5 acres
048
in/hr
4690 sf
= 2 17 cfs
Val. 4 %gip
14 00 6a(31L,s ;% P '

INFILTRATION SWALE - Schueler Method Prol No 300-07
12/27/1999
Design Calculations for Row Boat Row,
infiltration —basin As
Bald Head Island, NC 4of4
77
CAPE FEAR
Engfneerfng, Inc.
5040 Now Centro Dnvo Swto D
Wr/nrorptwr N C 2H40 3
Vuru, (910) 790-85H4
FNx (910) 700-858.3
E-mad ora(.)belhuuth net
C) Check the 10 year-10 minute storm event to confirm that swale has capacity without flushing system
where I = intensity for 10 year-10 minute storm event from Chart E-6
A = drainage area =
Cave = weighted coefficient of runoff
Determine discharge rate from 10 year-10 minute storm event
Q 10-yr = Cave x I x A
Q10-yr= 048' 63 ' 35
Determine discharge volume from 10 year-10 minute storm event
V 10-yr = Q 10-yr ' 10 min duration ' 60 sec/min
Check available volume of the proposed infiltration swale
V avail = design volume (from swale data table)
= U�,j6 3]in/hr
3 5 acres
048
= 10 67 cfs
= 6400 cf
8522 cf
Compare design volume of infiltration swale to discharge volume from 10 year storm event of 10 minute duration
Vavail = 8522 cfs > V 10-yr = 6400 cfs
(OK-swale has adequate capacity for 10-yr event without flushing)
It fl 1 H-
r , -�w AJL wjir - ayar. w/n rtr s nth
Compare infiltration system drawdown time to maximum drawdown period of 5 days
T = V regd / Q avail 1 hr/ 3600 sec
T = 8108 cf / 2 17 cfs 1 hr/ 3600 sec = 1 04 hours
(OK- system draws down in less than 5 days) 11
"'r4�.. � i �►w�%�rQ �i,,. w �'�a �a w,c.Nr�va a-�. i �/�'' � hw� .Z Zx� �,
S�t1c5, eio n•�f `I'Q^k �y'�. ,�►pof�d �Q.S� wtq a'"'� °"a
w/ j ati� I IN 4 � Sw, l e bit: 0 p p ri dPi IN I>� it 0, A 4e
era_ ewe la . 4{,lf 0, k, t4taj' , do w. l st • °I' 6w1� I. N¢ e�F{aa

rowboat_swale
Worksheet for Triangular Channel N
'iL>> f� �� 1•�� Tb ttJt it_T7 T7c ob S�s-T � 1
Project Description
Project File
p \300\300-07\talcs\rowboats fm2
Worksheet
grass swale
Flow Element
Triangular Channel
Method
Manning's Formula
Solve For
Channel Depth
Input Data
Mannings Coefficient 0 030
Channel Slope 0 000900 ft/ft
Left Side Slope 3 000000 H V
Right Side Slope 3 000000 H V
Discharge 2 75 cfs L
Results
✓
Depth
1 01
ft
Flow Area
3 03
ft'
Wetted Perimeter
636
ft
Top Width
603
ft
Critical Depth
0 55
ft
Critical Slope
0 021582
ft/ft
Velocity
091
ft/s L= OK
Velocity Head
001
ft
Specific Energy
1 02
ft
Froude Number
023
Flow is subcntical
7'7ZI0>. Ti/ ^,J, 7N c
4FOI-OrF , �s
Fr-
i
2�
_ C�� � '\ � r!r; " , � � <✓/ii✓ ATE 5'
Yir rirEGt 57z4v, ) //
/ 4, 1, = z5 4-
,, v = &' / (" t T'� , l
f-
??/o ZS 2/( 3o i Ih) - - , J,- I j1H -4 T
s 41A = ,45 (i I+) ( ! Iu)) - 2,'75 r--FS
Cape Fear Engineering FlowMaster v5 08
09 34 56 Page 1 of 1
09 34 56 AM Haeslad Methods Inc 37 Brookside Road Waterbury CT 06708 [phone]

Cross Section
Cross Section for Triangular Channel
ttLa¢tt�s Zt�1.tit� 'I'b Ir �CDr26�o� S fS'f�t� �f
Protect Description
Protect File
p \300\300-07\calcs\rowboats fm2
Worksheet
grass swale
Flow Element
Triangular Channel
Method
Manning's Formula
Solve For
Channel Depth
Section Data
Mammngs Coefficient
0 030
Channel Slope
0 000900
ft/ft
Depth
1 01
ft
Left Side Slope
3 000000
H V
Right Side Slope
3 000000
H V
Discharge
2 75
cfs
101ft
1 N
V
H 1
NITS
Cape Fear Engineering FlowMaster v5 08
i
09 35 02 AM Haestatl Methods Inc 37 Brookside Road Waterbury CT 06708 [phone] Page 1 of 1

PIPE TO SWALE
Worksheet for Circular Channel
Protect Description
Project File
p \300\300-07\calcs\rowboats fm2
Worksheet
PIPE TO INFILTRATION
Flow Element
Circular Channel
Method
Manning's Formula
Solve For
Channel Slope
Input Data
Mannings Coefficient
0 010
Depth
120 in
Diameter
12 00 in
Discharge
2 75 cfs
Results
Channel Slope
0 003526 ft/ft
Flow Area
0 79
ft'
Wetted Perimeter
3 14
ft
Top Width
000
ft
Critical Depth
071
ft
Percent Full
10000
Critical Slope
0 004830 ft/ft
Velocity
3 50
ftis
Velocity Head
0 19
ft
Specific Energy
FULL
ft
Froude Number
FULL
Maximum Discharge
296
cfs
Full Flow Capacity
275
cfs
Full Flow Slope
0 003526 ft/ft
Cape Fear Engineering FlowMaster v5 08
09 35 39 Page 1 of 1
09 35 39 AM Haestad Methods Inc 37 Brookside Road Waterbury CT 06708 [phone] 9

Cross Section
Cross Section for Circular Channel
Project Description
Project File
p \300\300-07\calcs\rowboats fm2
Worksheet
PIPE TO INFILTRATION
Flow Element
Circular Channel
Method
Manning's Formula
Solve For
Channel Slope
Section Data
Mannings Coefficient
0 010
Channel Slope
0 003526 fUft
Depth
120 in
Diameter
1200 in
Discharge
275 cis
12 00 in
1 N
V
H 1
NTS
Cape Fear Engineering FlowMaster v5 08
09 35 45 Page 1 of 1
09 35 45 AM Haeslad Methods Inc 37 Brookside Road Waterbury CT 06708 [phone] 9