SW8950303_HISTORICAL FILE_19950516

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SW8 L rS 0303
DOC TYPE
❑ CURRENT PERMIT
❑ APPROVED PLANS
HISTORICAL FILE
❑ COMPLIANCE EVALUATION INSPECTION
DOC DATE
IggS 0 51kD
YYYYMMDD

State of North Carolina
Department of Environment, Health, and Natural Resources
Wilmington Regional Office
James B. Hunt, Jr., Governor DIVISION OF ENVIRONMENTAL MANAGEMENT Bob Jamieson
Jonathan B. Howes, Secretary WATER QUALITY SECTION Regional Manager
May 16, 1995
Mr. M. Kent Mitchell
Bald Head Island, Ltd.
Post Office Box 3069
Bald Head Island, North Carolina 28461
Subject: CERTIFICATION OF COMPLIANCE
with Stormwater Regulations
Stormwater Project No. SW8 950303
Saba] Palm Cottages
Brunswick County
Dear Mr. Mitchell:
This Certification is pursuant to the application for Sabal Palm Cottages received on March 7,
1995, with additional information received May 9, 1995. Staff review of the project plans and
specifications has determined that the stormwater control system as proposed will comply with the
Stormwater Regulations set forth in Title 15A NCAC 2H.1003(h). Stormwater runoff will be treated by
4 infiltration basins and a perimeter infiltration Swale sized to contain the runoff from a 25 year, 24 hour
storm event from 34,412 square feet of built upon surfaces located on the site.
Any modification of the plans submitted to and approved by this Office or further development
of this site regardless of the fact that such modification may be less than l.acre, will require an additional
Stormwater Submittal/Modification and approval prior to initiation of construction. Modifications include
but are not limited to; project name changes, transfer of ownership, redesign of built -upon surfaces,
addition of built -upon surfaces, redesign or further subdivision of the project area as shown on the plans
submitted to and approved by this Office.
This Certification shall be effective from the date of issuance until rescinded. The project shall
be constructed and maintained in accordance with the plans and specifications approved by the
Wilmington Regional Office. This Certification does not supersede any other permit or approval. The
developer is responsible for obtaining any and all permits and approvals necessary for the development
of this project. This could include the Division of Coastal Management under CAMA requirements, The
Division of Environmental Management under Wetland 401 Water Quality Certification, and/or a Dredge
and Fill Permit, and/or a Sewer Extension/Collection Permit, U.S. Army Corps of Engineers 404
Wetland Permit, NPDES Stormwater Permit if disturbing five acres or more, local County or Town
Agency permits under their local ordinances, or others that may be required.
127 Cardinal Drive Extension, Wilmington, N.C. 28405-3845 • Telephone [phone] • Fax [phone]
An Equal Opportunity Affirmative Action Employer

Mr. Mitchell
May 16, 1995
Stormwater Project No. SW8 950303
A professional engineer must certify that the stormwater system has been installed in accordance
with the approved plans and specifications upon completion of construction. The attached certification
should be received by this Office within 30 days of construction completion.
The infiltration basins and Swale shall be constructed in their entirety, permanently vegetated, and
operational prior to the construction of any impervious surfaces proposed for the project, except roads.
If you have any questions concerning this matter, please call Ms. Linda Lewis or me at (910)-
395-3900.
Sincerely,
Dave Adkins
Water Quality Supervisor
DA/arl: S:\WQS\STORMWAT\CERTIFIC\950303.MAY
cc: Dwight Waser, P.E.
Delaney Aycock Brunswick County Building Inspections
Bradley Bennett
Linda Lewis
W iLnington=Regional Office
Central Files

DIVISION OF ENVIRONMENTAL MANAGEMENT
INFILTRATION SYSTEM PROTECT DATA
Project Name:
Project No.:
Location:
Applicant Name:
Mailing Address:
Submittal Date:
Water Body Receiving Stormwater Runoff:
Classification of Water Body:
Basin size:
Basin Depth:
Bottom Elevation:
Design Storage Elevation:
Total Impervious Surfaces Allowed:
Green Areas Draining to Basin:
Storage volume required:
Storage volume provided:
Infiltration Rate and Type of Soil:
Sabal Palm Cottages
SW8 950303
Brunswick
Mr. M. Kent Mitchell
Bald Head Island, Ltd.
Post Office Box 3069
Bald Head Island, North Carolina 28461
March 7, 1995
Bald Head Creek
"SA"
#1-150 sf, #2-185 sf, #3-180 sf, #4-465 sf,
perimeter swale-660 If
#1-2', #2-2', #3-2', #4-l', perimeter swale-l'
#1-6, #2-8, #3-8, #4-6, perimeter Swale-6 MSL
#1-8, #2-10, #3-10, #4-7, perimeter swale-7 MSL
34,412 square feet
#1-4,094 sf, #2-9,431 sf, #3-.26 ac, #4-.35 ac,
perimeter swale-.74 ac square feet
#1-277 cf, #2-277 cf, #3-533 cf, #4-1,322 cf,
perimeter swale-1,560 cf cubic feet
#1-300 cf, #2-277 cf, #3-540 cf, #4-1,480 cf,
perimeter swale-5,280 cf cubic feet
20"/hr. Coarse Sand
Comments: The system is designed to infiltrate the runoff from a 25 yr-24 hr event quickly enough
that storage capacity above the 1.5" event is not required.

1. Yes
2. Yes
3. Yes
4. Yes
5. Yes
6. Yes
7. Yes
8. Yes
9. Yes
10. Yes
11. Yes
Date
P*MTRATION SYSTEM EVALUATION
No System is capable of treating and disposing of runoff from all impervious
surfaces resulting from the 25 yr-24 hr storm.
No The system is located at least 50 feet from surface waters.
No The system is a minimum of 100 feet from water supply wells.
No The bottom of the system is a minimum of 2 feet above the seasonal high
water table.
No The vegetative filter provides non -erosive flow for the 10 year storm, even
distribution of the runoff over the length of the filter, a slope of 5 % or less,
and is planted with natural, grassed, or artificially planted wetland vegetation.
No The system has been shown to completely draw down in 5 days.
No Soil has a minimum hydraulic conductivity of 0.52 in/hr.
No The system is not sited on or in fill material.
No The system has an observation well.
No An Operation and maintenance plan has been provided for the system.
No THIS PROJECT MEETS THE STORMWATER CONTROL
REQUIREMENTS OF 15 NCAC 2H. (g), (h), 0), (k) and (1). For YES,
items 1-11 must all be highlighted YES.,
DIVISION OF ENVIRONMENTAL MANAGEMENT SIGN -OFF
Wilmington Regional Office
l G Hei 9_
Date
Date
Individual Evaluating Form/Plans
TiRegionnalll Soil Scientist
Regional Water Quality Supervisor
cc:Applicant/Bradley Bennett/arl/WiRO/CF

DIVISION OF ENVIRONMENTAL MANAGEMENT
i
DENSITY ENGINEERED E 'rx
PROJECT DATA
A v
Project Name Sabal Palm Cottages --------------------
Location (County, Township/Municipality, Address, State Road) Brunswick County
Bald Head Island, NC _
Owner's Name Bald Head Island Limited
MailingAddress P. 0. Box 3069
Bald Head Island, NC 28461
Phone Number [phone] Submittal Date March 6, 1995
Brief Description (include map and approptiate drawilrgs) 15 Multi -family units
with detached garages and associated amenities.
Name of Water Body Receiving Stormwater Runoff.
Bald Head Creek
Classification of Water Body SA -If SA waters, engineered system, and distance is <0.5
miles, attach report of chloride sampling results mg/1
State/Federal Permits/Approvals Required (Check appropriate blanks)
CAMA Major No
404 Permit No
Other (Soecifv)
CALCULATION OF BUILT UPON AREA
Sedimentation/Erosion Control No
DEM/DHS Sewage Disposal No
Built upon area means that portion of a development that is covered by impervious or partially pervious cover
including buildings, pavement, recreation facilities, gravel, etc., but not including wood decking. If the project
includes areas draining to different water classifications, please note them- separately below.
Classification
Built upon area
Total Project Area
% Built upon Area
Allowable B/U Area
Subwatershed
SA
34.412 SE"
98,881 SF
— �n�
24,720 SF
.Subwatershed
Is the Project B/U Area S the Allowable B/U Area? No (If no;
% Built upon area = (built upon area / total project area) * 100
Built upon area limits for projects to meet density: SA. waters — 25 %,
STORMWATER COLLECTION SYSTEM
Describe how the runoff will be treated
infiltration system.
Grassed swales and
resubm jecj
S— I.—q5
an engineered system is
Other —30%
lung MAR 0 7 1995 U
D E M
zo?5

talalat: ; ar_�
Is the built upon area at least 30 feet from mean high water of all surface waters? Yes If no, please
provide a description
(Note: Only boat ramps, public roads, public bridges, and walkways to water related facilities are allowed
within 30 feet of the mean high water line if the project is intended to meet stormwater control
requirements through density limits.)
DEED RESTRICTIONS AND PROTECTIVE COVENANTS
By my signature below, I certify that the recorded deed restrictions and protective covenants for this project
shall limit the allowable built -upon area per lot to NIA square feet inclusive of right -of --way,
structures, pavement, walkways or patios of brick, stone, or slate, not including wood decking, state that
the covenants will be binding on all parties and persons claiming under them, that they will run with the
land, and that benefits may be enforced by the State of North Carolina, therefore, the covenant cannot be
changed or deleted without consent of the State.
Cr, T:T_u':CATION
1, M. Kent Mitchell , certify that the information included on this
submittal form is correct, that the project will be constructed in conformance with this information, and
that to the best of my knowledge, the proposed project complies with the requirements of 15 NCAC
2H.1003 (b). I authorize the below named person or firm to submit stormwater plans on my behalf, and
agree to abide by the deRMT
above.
/11wrielSignAud Date
Provide authorized person or firm name and address below:
Mr. Dwight Waser, P.E.
McKim and Creed
243 North Front Street
Wilmington, NC 28401
I,C Z&LIa ( .oi/GL/I/1r'Ii allotary Public forth eStaty of Q4
County of (ado hereby certify that /f% 9('P/If /B/ personally
appeared hefore me rhi,� 4A _ day of ,r1. .19 , �_ d acknowl-dges t_".e d:e e: atiea
of the foregoinig%instrument. Witness my hand and official seal,
My commission expires COMMISSION DIPMES
DIVISION OF ENVIRONMENTAL MANAGEMENT SIGN -OFF
Regional Office
Icy HA-Y c S
Date
��M.9t'1 lS'SI
Date
cc: Applicant/WiRO/Bradley Bennett/Central Files

May 9, 1995
Ms. Linda Lewis
ENGINEERS NCDEHNR/DEM
127 Cardinal Drive Extension
SURVEYORS Wilmington NC 28405
ARCHITECTS
RE: Additional Information
PLANNERS Stormwater Project No. SW8 950303
Bald Head Island Sabal Palm Cottages
Brunswick County
243 NORTH FRONT STREET
WILMINGTON. NC 28401
9101343-1048
FAX [phone]
Dear Ms. Lewis:
MAY � 9 1995 D
................
M&C0049.0049(12)
We are in receipt of your letter dated May 3, 1995 requesting additional
information. We are providing the following comments.
1) Pond #4 data has been changed to specify a bottom elevation of 6.0,
which matches the bottom elevation as drawn.
2) The application form has been revised to indicate that 34,412 square
feet (.79 acres) will be impervious, providing a 35% total impervious
area. This matches the amount used in the calculations.
If you have any questions regarding this please give me a call.
Sincerely,
McKIM & CREED ENGINEERS, P.A.
'r 0 00-/,
wight . Waser, P.E.
Project Engineer
/bbs
PC: Dan Weeks
ST
U $ P1 LR
Ip�E9E1.VV UD
�j MAY 0 9 1995
D E M
eaoj si 91750303

•. � e�,. SrArEu
State of North Carolina
Department of Environment, Health, and Natural Resources
Wilmington Regional Office
James B. Hunt, Jr., Governor DIVISION OF ENVIRONMENTAL MANAGEMENT Bob Jamieson
Jonathan B. Howes, Secretary WATER QUALITY SECTION Regional Manager
Mr. Dwight Waser, P.E.
McKim and Creed
243 North Front Street
Wilmington, North Carolina
Dear Mr. Waser:
May 3, 1995
28401
Subject: ADDITIONAL INFORMATION
Stormwater Project No. SW8 950303
BII-Sabal Palm Cottages
Brunswick County
The Wilmington Regional Office received previously requested information for BHI-Sabal Palm
Cottages on April 7, 1995. A preliminary review of that information has determined that the submittal
for -the subject project is not complete. The following information is needed to continue the stormwater
review:
j/1. Pond #4 data lists a bottom elevation of 7.0, yet shows a 6.0 contour. Please clarify.
✓2. Adding up the impervious areas accounted for in the pond volume calculations, yields a
total greater than the amount listed on the submittal form. Please revise the form (original
enclosed) and return.
. Please note that this request for additional information is in response to a preliminary review. The
requested information should be received by this Office prior to June 3, 1995, or the submittal will be
returned as incomplete. If you have any questions concerning this matter please feel free to call me at
[phone].
Sincerely,
Ms. Linda Lewis
Environmental Engineer
DA/arl: S:\WQS\STORMWAT\ADDINFO\950303.MAY
cc: Lgii da Lewis
Central Files
127 Cardinal Drive Extension, Wilmington, N.C. 28405-3845 • Telephone [phone] • Fax [phone]
An Equal opportunity Affirmative Action Employer

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March 2, 1995
Ms. Linda Lewis
ENGINEERS NCDEHNR/DEM
127 Cardinal Drive Extension
SURVEYORS Wilmington NC 28405
ARCHITECTS RE: Additional Information
PLANNERS Stormwater Project No. SW8 950303
Bald Head Island Sabal Palm Cottages
Brunswick County
Dear Ms. Lewis:
M&C0049.0048(12)
0.�t
r�
APR 1 9 1995
�RoJ
s gyso 3o3
We are in receipt of your letter dated April 13, 1995 requesting additional
information. Apparently the revised calculations were separated from your
package which may have clarified several of the issues. The items listed
below correspond to the items in your letter.
1) The system has been designed to handle the run-off from a 25-year-24
hour storm without flushing. The calculations show that the storage
volume in combination with the high infiltration rate does not permit
flushing of the system.
2) Attached calculations provide required volume of pond and swales.
The ponds are designed for full depth during the design storm event.
3) We have used 1341 square feet of impervious area for each building in
sizing ponds and swales.
4) The perimeter walks will be constructed of wooden decking, and is
considered pervious.
5) The area of the perimeter Swale is slightly larger than 8 cf/If to the top
of the swale. 8 cf/If is used as a conservative figure to allow extra
243 NORTH FRONT STREET volume to be available as a safety factor.
WILMINGTON, NC 28401 6) As clarification, the perimeter walkway will be above grade similar to a
pier. This will allow the perimeter infiltration swale to follow a level
910/3431048 contour while zig-zagging across the walkway several times. It should
be noted that the buildings will also be on piers allowing the swale to
FAX [phone] cross under them as necessary. This will allow the swale to infiltrate as
designed.

7) It is certainly our intention and obligation to provide 2 feet separation
from the bottom of the swale to the water table. We propose to strictly
enforce this requirement at construction. Since the exact elevation of
your field investigation auger holes is not known, we could invite your
staff to the site at the time the swale is constructed to ensure the
separation is available. Also, we as the engineer of record, will be
required to certify the swale meets the requirements of DEM.
We feel that the plans do meet the requirements and intention of the Code,
and the design has a very high safety factor due to the extremely high
seepage rate in the soils.
If you have any questions please do not hesitate to call. We would also be
glad to review the design in a meeting with you at your convenience.
Sincerely,
McKIM & CR ED ENGINEERS, P.A.
Dwi4tWaser, P.E.
Project Engineer
/bbs
PC: Dan Weeks
46
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State of North Carolina
Department of Environment, Health, and Natural Resources
Wilmington Regional Office
James B. Hunt, Jr., Governor DIVISION OF ENVIRONMENTAL MANAGEMENT Bob Jamieson
Jonathan B. Howes, Secretary WATER QUALITY SECTION Regional Manager
April 13, 1995
Mr. Dwight W. Waser, P.E.
McKim and Creed
243 North Front Street
Wilmington, North Carolina 28401
Subject: ADDITIONAL INFORMATION
Stormwater Project No. SW8 950303
Bill - Sabal Palm Cottages
Brunswick County
Dear Mr. Waser:
The Wilmington Regional Office received previously requested information for the BHI - Sabal
Palm Cottages on April 4, 1995. A preliminary review of that information has determined that the
submittal for the subject project is not complete. The following information is needed to continue the
stormwater review:
1. As requested on March 20, 1995, you do not show the ability to bypass the runoff in
excess of the 1-1/2" requirement. As stated in the regulations, all infiltration systems must
be able to bypass the excess runoff to prevent flushing of pollutants through the system.
2. As requested on March 20, 1995, please, calculate the volume required to be stored, the
volume available in each pond and infiltration swale, and the depth that the runoff will
reach in each pond and swale. The ponds have been revised, but revised and sealed
calculations have not been received.
3. Per the typical footprint received, I calculate 1306 square feet of impervious area,
assuming a covered entrance porch, for each unit. The old calculations appear to account
for only 827 square feet per unit. Please clarify. This will increase the overall impervious
percentage of the site, and increase the runoff volume for each pond/swale.
4. If pea gravel is used for the perimeter walks, then it will be considered as impervious, and
must be included in the calculations for volume. If wooden decking is used, then it is
considered pervious.
127 Cardinal Drive Extension, Wilmington, N.C. 28405-3845 • Telephone [phone] • Fax [phone]
An Equal Opportunity Affirmative Action Employer

Mr. Waser
April 13, 1995
Stormwater Project No. SW8 950303
5. I am unable to duplicate the 8 cf/lf of volume you calculate for the perimeter Swale. If
elevation 8 is used as the top of the Swale, then the volume is significantly larger. If only
the fast 1 foot is used, then the volume is only 5 cf/lf.
6. Please add the perimeter walkway location and width in relation to the infiltration swale
to the detail. If the dark dashed and dotted line onthe plans indicates the location of the
perimeter swale, then it appears to zigzag across. the perimeter walkway. Please clarify.
7. The perimeter swale bottom elevation of 6 is a concern. Our field investigation revealed
that the water table on the down -side of the slope was less than 32" below the surface,
making the proposed bottom elevation of 6 too low to meet the 2' separation. However,
on the upper part of the slope, it was determined that the water table was more than 5'
below the surface, indicating that infiltration could be sited there. Please clarify the
location of the perimeter swale so that it is built on the upper part of the slope, where a
bottom elevation of 6' will meet the 2' separation.
Please note that this request for additional information is in response to a preliminary review. The
requested information should be received by this Office prior to May 13, 1995, or the submittal will be
returned as incomplete.
If you have any questions concerning this matter please feel free to call me at [phone].
Sincerely,
y/ l
Ms. Linda Lewis
Environmental Engineer
DA/arl: S:\WQS\STORMWAT\ADDINFO\950303.APR
cc: �L'inda=Lewiss
Dan Weeks, BHI Planning
Central Files

02' 01, 78' 59, 58' 57'('''p�'f I 56'
APR 0 4 1995
01�
34 BALD HEAD ISLAND
April 3, 1995
59'
Ms. Linda Lewis, Environmental Engineer
58 DEHNR/Water Quality
127 Cardinal Drive Extension
Wilmington, NC 28405
Dear Ms. Lewis:
57'
Enclosed, please find a revised stormwater submittal package for Sabal Palm Cottages
(SW8 950303. We believe we have addressed all of the items noted in your letter dated
March 20, 1995 regarding this project.
56, If you should have questions or need additional information, please call me at
910-457-7339.
Sincerely,
55'
Daniel H. Weeks, ASLA
Director of Planning liy8�1�� tl
54,
Enclosure _, � � E u
cc: Dwight Waser
Sandy Darby APR 0 4 1995
53'11 DE14
,Roj #.Iw 50303
52
ANOTHER WORLD
pool6ER®
POST OFFICE BOX 3069, BALD HEAD ISLAND, NORTH CAROLINA 28461 1-800-234-1666
o1'
59'
58'
57'
56'
55'
54'
53'
52'
02, O1' 78* 59' 58' 57' 56'

INFILTRATION POND MAINTENANCE I D) E G E 0 V k
w APR 0 4 1995 U
Project Name: Saba1 Palm Cottages
•Ro) As.,vf95mo303
Responsible Party Name: Bald Head Island, • Limited
Address: P. 0 Box 3069 Bald Head Island N(' 22461 PboneNo:[phone]
After every runoff producing rainfall event, or at least monthly, whichever comes first:
1. Inspect the infiltration pond(s) for erosion, trash accumulation, grass coverage, and general
condition of the facility.
2. Repair eroded areas immediately, re -seed as necessary, keep side slopes and bottom
mowed, and remove trash.
3. Check any inlet piping, swales and catch basins. Repair broken piping, reseed swales, and
remove trash.
4. Inspect the bypass/overflow structure for blockage and deterioration. Remove blockage
and repair structure to originally approved design specifications.
5. Check the depth of the pond(s) every six months. If siltation has occurred to the point that
only 75% of the original design depth is provided, remove the excess silt to the original
depth. Do not over -excavate, as this may cause the required water table separation to be
reduced, and may affect the ability of the system to perform as designed.
I, Daniel H. weeks, Director of Planning, agree tobe responsible for performing
the maintenance items as listed above for this project. I agree to notify NCDEM of any problems with
the system, Mmname of tl roject, name of the responsible party, or address.
Signature Date March 31, 1995
I,
lI%,,, �-1 gt)uerl . , State of
signature below, that juee
appeared before me this day of.
the due execution of the foregoing instrument.
a Notary Public in the County of
C,g ry l i n c, , do hereby certify by my
personally
19 2, and acknowledge
Witness my seal and signature,
SEAL
My commission expires MyCOoMISSIONo�MM

; aniONEXMBE2
i

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W U SABAL PALMS COTTAGES
APR 0 4 1"S GEOTECHNICAL INVESTIGATION REPORT
BALD HEAD ISLAND
D E M BRUNSWICK COUNTY, NC
,Roj Sc29gSD303
PROJECT SITE DESCRIPTION:
Bald Head Island
0049-0048.OW
The proposed project consists of approximately 2.2 acres in the interior of Bald Head
Island. It is located at the end of Sabal Palms culdesac. The tract drains from west to
east with the elevations on the upper end averaging around 11 ft. with small peak high
elevations of 15ft. The perimeter of the east end is adjacent to a lagoon at elevation 4.
The middle of the tract is relatively flat with a steep slope to the south of 20% while the
area to the north slopes at approximately 6%. Along the perimeter towards the lagoon,
the land drops more steeply to the edge of the water.
Bald Head Island proposes to develop the tract with fifteen-1,000 square foot units and
associated drives. In order to meet the North Carolina Department of Environment,
Health and Natural Resources requirements, the storm water will be controlled by
infiltration swales intercepting the runoff prior to leaving the property boundaries.
The purpose of this investigation is to evaluate the soils in regard to their infiltration -
capabilities.
SUBSURFACE CONDITIONS:
The soils in this area of Bald Head Island are predominantly corolla fine sands. These
sands are known to have slow run off due to their extremely rapid permeability and high
seepage rate. The corolla sands consist of pale brown fine sands in the upper portion
and lighter brownish gray fine sands toward the lower part. The sand consists of
approximately 3% of clay material. This gives the material a very high permeability rate
of well over 20 inches per hour.
Soil Borings:
5 soil borings were taken at the proposed ponds in order to determine the water table
elevation. These borings indicated that the water table was approximately at elevation
4 across the.property. The table below summarizes the findings:
��M�IQM&�REID
PAGE t

SOIL BORING DATA
BORING SOIL
1
2
3
4
5
Fine Sand
Fine Sand
Fine Sand
w/course shells @ 5' 0 deep
Fine Sand
Fine Sand
w/dark silt sand @ 3' 9"
SURFACE HIGH WATER
ELEVATION TABLE ELEVATION
6 4
12 <7
9 <5
7 4
7 2.5
At the time the borings were done the area has been in a wet season with indications that
the water table is near its seasonal high elevation. Using an elevation of 4 throughout the
site for the seasonal high water table should provide a conservative basis for design.
SUMMARY:
Based on the geotechnical investigation of the soils, it is expected that using an infiltration
rate of 20 inches per hour and providing a 2 foot separation between the water table at -
elevation 4 and the swales and pond bottoms, should allow the infiltration system to provide
adequate treatment of the soil runoff.
����&C=
RAGE 2 I

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4- S1S= I;50(0,5 yf
,� I ��I I ✓ rL�
P5 ;3.5
lun(� U MAR 2 3 1995
pgpJ f$950303
Plana, ®vatic" and P" ylear .ubpat to
without action..n; .sang" far SABAL PALM
First Floor Plan �c`°L°"'of :' ue;�°"'°
Th'.=ad.' t. to,„tn.t.attan nn,T.,t to COTTAGES
not part of any contract bdw"n
Rats Rana Wam .ad.ta.U&J vuTnbwT.. Bald Heed Island, NC 28461
Scale: VB" - 1' 0„ NOT MR CONRTRUMOR

Residential - New Development
Percent of
Total Impervious Impervious
Parcel Land Use Acres Units Coverage Coverage (Acres)
A
Single Family Lots
19.2
AC
28
21%
4.1
AC
B
Single Family Lots
24.6
AC
47
25%
5.1
AC
C
Single Family Cluster
10.5
AC
63
60%
6.3
AC
D
Multi -Family
6.5
AC
28
60%
3.9
AC
E
Single Family Lots
13.2
AC
26
22%
2.9
AC
F
Single Family Cluster
7.6
AC
45
60%
4.5
AC
G
Multi -Family
4.1
AC
26
30%
1.3
AC
H
Single Family Lots
8.2
AC
9
23%
1.94
AC
I
Single Family Lots
10.8
AC
17
22%
2.5
AC
J
Single Family Lots
7.5
AC
9
20%
1.5
AC
K
Multi -Family
9.9
AC
26
60%
5.9
AC
L
Single Family Cluster
22.6
AC
66
60%
6.7
AC
M
Single Family Cluster
8.5
AC
16
60%
5.1
AC
N
Single Family Cluster
2.8
AC
18
60%
1.6
AC
O
Single Family Cluster
2.0
AC
5
30%
.6
AC
P
Single Family Lots
10.7
AC
16
14%
1.6
AC
Sub -Total
168.7
AC
445
55.54
AC
Non -Residential
Service Village
37.4
AC
60%
22.4
AC
Village Center
4.2
AC
60%
2.5
AC
Recreation Center
11.3
AC
60%
6.7
AC
Beach Club
4.0
AC
30%
1.2
AC
East Beach Commercial
and Beach Access
2.1
AC
30%
.6
AC
Park
.3
AC
25%
.07
AC
Bald Head Island Nature
Conservancy Complex
.8
AC
30%
.24
AC
Commercial
2.6
AC
30%
.8
AC
Sub -Total
62.7
AC
34.51
AC
Pre -Existing Residential (as per previous permit and/or modifications)
Flora's Bluff
8.7
AC
(26 lots)
25%
2.1
AC
Killegray Ridge (FB II)
9.1
AC
(29 lots)
25%
2.2
AC
Muscadine Woods
14.0
AC
(32 lots)
12.5%
3.5
AC
Captain Charlie's Sta.
4.8
AC
( 4 lots)
5%
.25
AC
Pods 1, 2, and 3
54 .0
AC
(89 lots)
20%
10.8
AC
Sub -Total
90.6
AC
(180 lots)"i
k
18.85
AC
Infrastructure
Proposed Roadway 10.0 AC
Parking & Circulation
Total 332.0 AC
9H I
�CE�Ukr 010.0 AC
625 �IUIU1�\J1 MAR 2 3 1995 118.9 AC
DEM
PROJ a>E Sr uB 95o303

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State of North Carolina
Department of Environment, Health, and Natural Resources
Wilmington Regional Office
James B. Hunt, Jr., Governor DIVISION OF ENVIRONMENTAL MANAGEMENT Bob Jamieson
Jonathan B. Howes, Secretary WATER QUALITY SECTION Regional Manager
Mr. Dwight Waser, P.E.
McKim and Creed
243 North Front Street
Wilmington, North Carolina
Dear Mr. Waser:
March 20, 1995
28401
Subject: ADDITIONAL INFORMATION
Stormwater Project'No. SW8 950303
Bald Head Island-Sabal Palm Cottages
Brunswick County
The Wilmington Regional Office received a Stormwater Submittal for Bald Head Island-Sabal
Palm Cottages on March 7, 1995. A preliminary review of that information has determined that the
submittal for the subject project is not complete. The foliewh.g information is needed to continue the
stormwater review:
1. North Carolina registered Professional Engineers seal on the calculations.
t/2. Signed and notarized Operation and Maintenance Plan.
�. A dimensioned, typical footprint of the cottage. Please include any sidewalks from the
garage to the cottage in your impervious area calculations.
t �(aj 4. You do not show the ability to bypass the excess design storm. In order to obtain approval,
you must demonstrate that the system can hold the runoff from a 25 year, 24 hour storm
and not discharge. You have provided information on the 50 year, 10 minute storm.
/ rc 44
5. Please label the construction material for the gazebo - wood, concrete foundations, etc. and
include in the built -upon area, if required. ydec nc� :A'DA
6%6. Please provide a road cross-section on the plans that clearly shows a continuous cross -
slope. The runoff from areas 2, 3, 4, and 5 cannot cross over the road to the
infiltration areas if a normal crown road section is specified.
127 Cardinal Drive Extension, Wilmington, N.C. 28405-3845 • Telephone [phone] • Fax [phone]
An Equal Opportunity Affirmative Action Employer

Mr. Waser
March 20, 1995
Stormwater Project No. SW8 950303
,/ 7. A copy of a small scale map of the Master Plan Stage H with the project location
highlighed, and a copy of the approved built -upon area list with the parcel number
highlighted.
8. A copy of the soil survey indicating the soil permeability and the depth to the Seasonal
High Water Table at each proposed basin and swale location. A minimum 2' separation
/ between the bottom of basin/swale and the SHWT is required.
Z 9. Please revise the detail labelled as the infiltration "ditch", to the infiltration "swale" to
match up with the plans.
10. Add swale bottom elevations at various locations to indicate to the contractor the depth of
�l0 00� the swale at that particular location.
nh�
0�aQ� 11. specify the surface areas of each pon and how you arrived at th provided volume in
each pond. What epth will --the ach within each pond?
12. The deed restriction portion of the from must be completed. You are basing this design
on a particular amount of impervious cover, and each lot must be restricted accordingly.
A3. Please specify McKim and Creed Engineers on the back of the submittal form as authorized
to submit plans on BHI's behalf.
Please note that this request for additional information is in response to a preliminary review. The
requested information should be received by this Office prior to April 20, 1995, or the submittal will
be returned as incomplete.
If you have any questions concerning this matter please feel free to call me at [phone].
Sincerely,
Ms. Linda Lewis
Environmental Engineer
DA/arl: S:\WQS\STORMWAT\ADDINFO\950303.MAR
cc: (2) Linda Lewis
Central Files
2

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A

DIVISION OF ENVIRONMENTAL MANAGEMENT
DENSITY ENGINEERED
iJJ PROJECT DATA !^ I
Project Name Sabal Palm Cottages ----------- __________
Location (County, Township/Municipality, Address, State Road) Brunswick County
Bald Head Island. NC
Owner's Name Bald Head Island Limited
MailingAddress P. 0. Box 3069
Bald Head Island, NC 28461
Phone Number [phone] Submittal Date March 6, 1995
Brief Description (include map and appropriate drawings) 15 'residential units
with detached garages and associated amenities.
Name of Water Body Receiving Stormwater Runoff Bald Head Creek
Classification of Water Body SA If SA waters, engineered system, and distance is <0.5
miles, attach report of chloride sampling results mg/1
State/Federal Permits/Approvals Required (Check appropriate blanks)
CAMA Major No
404 Permit No
Other (SDecifv)
CALCULATION OF BUILT UPON AREA
Sedimentation/Erosion Control No
DEM/DHS Sewage Disposal No
Built upon area means that portion of a development that is covered by impervious or partially pervious cover
including buildings, pavement, recreation facilities, gravel, etc., but not including wood decking. If the project
includes areas draining to different water classifications, please note them separately below.
Classification
Built upon area
-Total Project Area
% Built upon Area
Allo vable B/U Area
Subwatershed
SA
28,750 SF
98,881 SF
29%
24,720 SF
. Subwatershed
Is the Project B/U Area 5 the Allowable B/U Area? No (If no, an engineered system is
% Built upon area = (built upon area / total project area) * 100
Built upon area limits for projects to meet density: SA waters — 25%, Other —30%
STORMWATER COLLECTION SYSTEM
Describe how the runoff will be treated Grassed swales and
infiltration system.
-> n
Office use only ,
VV
W MAR 0 7 1995 U
zoo T u �303

BUFFER AREA
Is the built upon area at least 30 feet from mean high water of all surface waters? yes If no, please
provide a description
(Note: Only boat ramps, public roads, public bridges, and walkways to water related facilities are allowed
within 30 feet of the mean high water line if the project is intended to meet stormwater control
requirements through density limits.)
DEED RESTRICTIONS AND PROTECTIVE COVENANTS
By my signature below, I certify that the recorded deed restrictions and protective covenants for this project
shall limit the allowable built -upon area per lot to NIA - square feet inclusive of right -of --way,
structures, pavement, walkways or patios of brick, stone, or slate, not including wood decking, state that
the covenants will be binding on all parties and persons claiming under them, that they will run with the
land, and that benefits may be enforced by the State of North Carolina, therefore, the covenant cannot be
changed or deleted without consent of the State.
1 M. Kent Mitchell , certify that the information included on this
submittal form is correct, that the project will be constructed in conformance with this information, and
that to the best of my knowledge, the proposed project complies with the requirements of 15 NCAC
2H.1003 (b). I authorize the below named person or firm to submit stormwater plans on my behalf, and
agree to abide by the deed estricf n tat t above. // A"
t0
wner's Signa Date
Provide authorized person or firm name and address below:
I, G �� • d✓ate /P allotary Public: for theStatgof
County of / , do hereby ce ify that /i% 9(/P/� f e / personally
appeared before me this 4A day of 192S, and acknowledges the due execution
of the foregoing instrument. Witness my hand and official seal,
COMMISSION WMM '
My commission expires ecgu
DIVISION OF ENVIRONMENTAL MANAGEMENT SIGN -OFF
Regional Office
Date
Individual Evaluating Forms/Plans
Date Regional Water Quality Supervisor
cc: Applicam/WiROBradley Bennett/Central Files

M&C0049.0048(12)
DESIGN NARRATIVE
STORMWATER MANAGEMENT
FOR I �1 MAR 7 1995
SABAL PALM COTTAGES ---»v
BALD HEAD ISLAND
Proiect Description: The Sabal Palm Cottages project is a 15 unit development located on Bald
Head Island in Brunswick County. The site is located on the cul-de-sac of Sabal Palm Court.
The project consists of fifteen 1,000 SF residential buildings, golf cart garages and associated
streets on 2.3 acres of land.
Site Topography: The 2.3 acre site is located within a natural depression which has no discharge
to surface waters. The tract itself is relatively flat with exception to the southern boundary which
is adjacent to the lagoon and drops off to the lagoon.
General Soils: The soils within this site are generally identified as corolla sands by the USDA,
Soil Survey. These sands are extremely well draining with percolation rates greater than
20 inchesihour.
Site Drainage: Stormwater drainage shall be collected by sheet flow run-off into a system of
infiltration swales and ponds. Overflow from those ponds would pool in the area of the ponds
and ultimately sheet flow to the lagoon where further infiltration taken place.
Erosion Control: Silt fence will be constructed around the site to prevent siltation and as a
construction barrier. The infiltration swales and ponds shall be used as a sediment pit during
construction and cleaned out at completion of the grading work.
Grassing of all disturbed areas will be completed as soon after completion of grading work as
practical. In any event, ground cover will be established within 30 days maximum time period.
W bu
YAR 0 7 1995
D E M
�tzoi � $ �so3o3

M&C0049.0048(17-)
SABAL PALM COTTAGE
BALD HEAD ISLAND
CONS"fRUCTION SCHEDULE
1. Obtain plan approval and other applicable permits.
2. Fla_ the work limits.
3. Hold pre -construction conference at least one week prior to starting construction.
4. Provide construction entrances.
5. Install silt fence as the first construction activity.
6. Excavate and construct holding ponds and swales.
7. Perform excavation and backfilling operations to point of fill/cuts being, completed.
8. Stabilize all exposed surfaces with mulch, seed, and fertilizer. Surface should be left
slightly roughened.
9. Install stone base for asphalt areas. Place asphalt and concrete where shown on plans.
10. If temporary seeding mixture was placed, overseed area with permanent mixture at proper
time.
11. Remove silt fence after vegetation has been established and approval given.

M&C0049.0048(12)
SABAL PALM COTTAGES
BALD HEAD ISLAND
INFILTRATION SYSTEM MAINTENANCE REQUIREMENTS
Inspect After Every Run-off Producing Rainfall Event.
A. Run-off Debris - remove debris accumulation
B. Pond and Swale Side Slopes - repair eroded areas, remove trash
II. Inspect Semi -Annually (every 6 months):
A. Pond and System Depth - if < 75% of approved design depth (check approved
drawings) excavate to design depth and reestablish vegetation.

02' 01' 78' 59' 58' 57'
56'
34 BALD HEAD ISLAND
March 6, 1995
Ms. Linda Lewis
59. NCDEHNR/DEM ;� MAR 71995
127 Cardinal Drive Extension
Wilmington, NC 28405�-
58'
RE: Stormwater Submittal for Sabal Palm Cottages
Dear Ms. Lewis:
59
58
Enclosed, please find a submittal package for Sabal Palm Cottages, a new project here on Bald
Head Island containing 15 residential units built for sale with detached garages and associated
57' amenities. Also enclosed, is a stormwater management plan engineered by McKim and Creed 57'
and cover letter describing the design intent.
The overall project are is 2.3 acres with a build upon area of 28,750 SF which equates to 29%
coverage. Since this exceeds our allowable 25% coverage, McKim and Creed has provided an
6' engineered stormwater management plan. Since this project is disturbing less that one acre, 6'
no sedimentation and erosion control plan is necessary. We of course will take every precaution
during construction to minimize impact to this unique and pristine site.
55 If you have any questions or comments, please call me at 910-457-7339. 55'
Sincerely,
54'
Daniel H. Weeks, ASLA
Director of Planning
Enclosures
53'
cc: Carol Miller, DEM
Sandy Darby
Dwight D. Waser, P.E.
52'
�gCC SAT
gju1 am- L�3
ER
IN MAR 0 7 1995 U
D B ivl
'Rol #.L8 950303
POST OFFICE BOX 3069, BALD HEAD ISLAND, NORTH CAROLINA 28461
1-800-234-1666
54'
53'
52'
02, of 78' 59, 58, 57' 56'

�r
March 2, 1995
Ms. Linda Lewis
NCDEHNR/DEM
ENGINEERS 127 Cardinal Drive Extension
Wilmington NC 29405
SURVEYORS
ARCHITECTS RE: Stormwater Management Plan
Sabal Palm Cottages
PLANNERS Bald Head Island, Brunswick County
Dear Ms. Lewis:
rl' MAR7 1395
1sJ
M&C0049.0048(12)
Enclosed is a review submittal package for the referenced project on Bald Head
Island. The project consists of 2.3 acres with fifteen residential units and
associated roadway. The topography of the area surrounding the site consists of
a natural depression with a lagoon which has no outlet to surface waters. The
lagoon acts as an infiltration sink for that drainage basin.
The stormwater management has been designed as an infiltration system draining
to SA waters, only because Bald Head Island Creek is nearby, although not
connected to the basin, to provide a conservative design. The system has been
designed using a series of infiltration swales and ponds to provide sufficient
volume. These are sized to-holii run -off -from a 1'0=year 24-hour storm_eyent,
to the attached calculations for detailed
The soils composing the swales are very rapid draining sands and would infiltrate
their capacity in approximately 1 hour. This is considerably less than the five
days maximum allowed.
If you have any questions during your review please feel free to give me a call.
243 NORTH FRONT STREET Sincerely, � ���d
r. 1-�.[.� 7Jt)
WILMINGTON, NO 28401 Mt4ht1r,
cKIM &CREED ENGINEERS, P.A. T 1'd4f01343f048 � r, ., _ �D . P.E.
FAX [phone]�B282
Project Engineer MAR 0 7 1995
/bbs
PC: Dan Weeks R of #2L 950
_

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DES. BY DD IV
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