SW8060308_CURRENT PERMIT_20060421

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SW �U &M0o'
DOC TYPE
� CURRENT PERMIT
❑ APPROVED PLANS
❑ HISTORICAL FILE
❑ COMPLIANCE EVALUATION INSPECTION
DOC DATE
YYYYMMDD

•.'o��� w a ��9Qt✓
7
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April 21, 2006
Mr. Steve Shuttleworth, President
Colorado Coastal Development Company
7741 Market Street, Suite I
Wilmington, NC 28405
Subject: Stormwater Permit No. SW8 060308
Sunset Marina
High Density Project
Brunswick County
Dear Mr. Shuttleworth:
Michael F. Easley, Governor
William G. Ross Jr., Secretary
North Carolina Department of Environment and Natural Resources
Alan W. Klimek, P.E. Director
Division of Water Quality
The Wilmington Regional Office received a complete Stormwater Management Permit
Application for Sunset Marina on April 13, 2006. Staff review of the plans and specifications
has determined that the pproject, as proposed, will comply with the Stormwater Regulations set
forth in Title 15A NCAC 2H.1000. We are forwarding Permit No. SW8 060308 dated April 21,
2006, for the construction of the subject project.
This permit shall be effective from the date of issuance until April 21, 2106, 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 Robert Gordon, or me at [phone].
Sincerely
Edward Beck
Regional Supervisor
Surface Water Protection Section
ENBlydg: S:IWQSISTORMWATIPERMIT1060308.apr06
cc: Brad Sedgewick, PE, JBS Consulting
Delaney Aycock, Brunswick County Building Inspections
Jeff Phillips, Brunswick County Engineering
Division of Coastal Management
Robert Gordon
Wilmington Regional Office Noa`hCarolina
Central Files .1l1atura!!y
North Carolina Division of Water Quality 127 Cardinal Drive Extension Phone [phone] Customer Service 1-877-623-6748
Wilmington Rcgiunal office Wilmington, NC 28405 Fax [phone] Internet: www.ncwaterqualii .orx
An Equal OpportunitylAffirmabve Action Employer-- 50% Recyded110% Post Consumer Paper

State Stormwater Management Systems
Permit No. SW8 060308
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
Mr. Steve Shuttleworth & Colorado Coastal Development Company
Sunset Marina
1358 Beach Drive, Calabash - Brunswick County
FOR THE
construction, operation and maintenance of 2 infiltration basins and 1 bioretention area
in compliance with the provisions of 15A NCAC 2H .1000 (hereafter referred to as the
"stormwater rules') and the approved stormwater management plans and specifications
and other supporting data as attached and on file with and approved by. the Division of
Water Quality and considered a part of this permit.
This permit shall be effective from the date of issuance until April 21, 2016, and shall be
subject to the following specified conditions and limitations:
I. DESIGN STANDARDS
1. This permit is effective only with respect to the nature and volume of stormwater
described in the application and other supporting data.
2. This stormwater system has been approved for the management of stormwater
runoff as described in Section 1.6 & 1.7 on page 3 of this permit. Infiltration basin
1 has been designed to handle the runoff from 8,513 square feet of impervious
area. Infiltration basin 3 has been designed to handle the runoff from 4,409
square feet of impervious area. The bioretention area has been designed to
handle the runoff from 10,542 square feet of impervious area. Each BMP must
be operated with a 50' vegetated filter.
3. The tract will be limited to 28,132 square feet , as per approved plans. There is
no impervious area available for future development in this permit.
4. All stormwater collection and treatment systems must be located in either
dedicated common areas or recorded easements. The final plats for the project
will be recorded showing all such required easements, in accordance with the
approved plans.
Page 2 of 8

State Stormwater Management Systems
Permit No. SW8 060308
5. The runoff from all built -upon area within the permitted drainage area of this
project must be directed into the permitted stormwater control system. 4,668
square feet of existing impervious area will be allowed to remain untreated.
6. The following design criteria have been provided in the infiltration basin and must
be maintained at design condition:
=.
;Units
Basin"#1
F Basin!#3' -
Drainage Area
Onsite
Offsite
Acres
ft2
ft2
0.21
0.21
0
0.12
0.12
0
Total Impervious Surfaces
ft2
8,513
4,409
Basin Depth
feet
1.5
1.5
Design Storm
inches
1.5
1.5
Bottom Elevation
FMSL
12.0
13.5
Permitted Surface Area
Bottom
ft2
440
193
Permitted Storage Volume
ft3
990
524
Storage/Bypass Elevation
FMSL
13.5
15.0
Expected Infiltration Rate
in/hr
8.9
8.7
Time to Draw Down
hours
.126
.156
Type of Soil`
..
Pactolus
soil type
Receiving Stream
€a';;',' �. ,
Calabash River
stream
River Basin
°: r'- ;`'
Lumber
river basin
Stream Index Number
y
15-25-13
stream index #
Classification of Water Bodyw
'''P
"SA;HQW"
"stream class"
7. The following design criteria have been provided in the bioretention area and
must be maintained at design condition:
-:
N
I1{ _
nit1
1, ,:
.rBasm
Biaretentibri� Area Y,
i fhT4 - - 1-i...
#2r5n ��
Drainage Area
Onsite
Offsite
Acres
ft2
ft2
0.30
0.30
0
Total Impervious Surfaces
ft210542
Max Ponding Depth
feet
1
Design Storm
inches
1.5
Bottom Elevation
FMSL
13.0
Permitted Surface Area @Bottom
ft2
__Tt3
1048
Permitted Storage Volume
1260
Storage/Bypass Elevation
FMSL
14.0
In -Situ Soil Infiltration Rate
in/hr
0.40
Time to Draw Down
hours
36.01
Total Required Plants
Woody
Shrub
stems
24
6
18
Mulch Layer Depth
inches
3
Receiving Stream
stream
River Basin
river basin
Stream Index Number
stream index #
Classification of Water Body
"stream class"
Page 3 of 8

State Stormwater Management Systems
Permit No. SW8 060308
8. The planting soil media for the bioretention area must be a loam, sandy loam or
loamy sand as described by the USDA soil textural triangle and as described on
the approved plans. The minimum infiltration rate of the planting soil must be
0.52 inches/hour. The planting soil media in the bioretention area must maintain
nutrient levels adequate for the growth of the plant species specified on the
approved plans.
II. SCHEDULE OF COMPLIANCE
The stormwater management system shall be constructed in its entirety,
vegetated and operational for its intended use prior to the construction of any
built -upon surface.
2. During construction, erosion shall be kept to a minimum and any eroded areas of
the system will be repaired immediately.
3. The permittee shall at all times provide the operation and maintenance
necessary to assure the permitted stormwater system functions at optimum
efficiency. The approved Operation and Maintenance Plan must be followed in
its entirety and maintenance must occur at the scheduled intervals including, but
not limited to:
a. Semiannual scheduled inspections (every 6 months).
b. Sediment removal.
C. Mowing and revegetation of slopes and the vegetated filter.
d. Immediate repair of eroded areas.
e. Maintenance of all slopes in accordance with approved plans and
specifications.
f. Debris removal and unclogging of bypass structure, infiltration media, flow
spreader, catch basins, piping and vegetated filter.
g. A clear access path to the bypass structure must be available at all times.
4. Records of maintenance activities must be kept and made available upon
request to authorized personnel of DWQ. The records will indicate the date,
activity, name of person performing the work and what actions were taken.
5. The facilities shall be constructed as shown on the approved plans. This permit
shall become voidable unless the facilities are constructed in accordance with
the conditions of this permit, the approved plans and specifications, and other
supporting data.
6. Upon completion of construction, prior to issuance of a Certificate of Occupancy,
and prior to operation of this permitted facility, a certification must be received
from an appropriate designer for the system installed certifying that the permitted
facility has been installed in accordance with this permit, the approved plans and
specifications, and other supporting documentation. Any deviations from the
approved plans and specifications must be noted on the Certification. A
modification may be required for those deviations.
7. If the stormwater system was used as an Erosion Control device, it must be
restored to design condition prior to operation as a stormwater treatment device,
and prior to occupancy of the facility. The bioretention area may not be used as
a sediment and erosion control device once the planting soil has been placed.
8. Access to the stormwater facilities shall be maintained via appropriate
easements at all times.
Page 4 of 8

State Stormwater Management Systems
Permit No. SW8 080308
9. The permittee shall submit to the Director and shall have received approval for
revised plans, specifications, and calculations prior to construction, for any
modification to the approved plans, including, but not limited to, those listed
below:
a. Any revision to any item shown on the approved plans, including the
stormwater management measures, built -upon area, details, etc.
b. Project name change.
C. Transfer of ownership.
d. Redesign or addition to the approved amount of built -upon area or to the
drainage area.
e. Further subdivision, acquisition, lease or sale of all or part of the project
area. The project area is defined as all property owned by the permittee,
for which Sedimentation and Erosion Control Plan approval or a CAMA
Major permit was sought.
f. Filling in, altering, or piping of any vegetative conveyance shown on the
approved plan.
10. The permittee shall submit final site layout and grading plans for any permitted
future areas shown on the approved plans, prior to construction.
11. A copy of the approved plans and specifications shall be maintained on file by
the Permittee for a minimum of ten years from the date of the completion of
construction.
12. The Director may notify the permittee when the permitted site does not meet one
or more of the minimum requirements of the permit. Within the time frame
specified in the notice, the permittee shall submit a written time schedule to the
Director for modifying the site to meet minimum requirements. The permittee
shall provide copies of revised plans and certification in writing to the Director
that the changes have been made.
III. GENERAL CONDITIONS
This permit is not transferable except after notice to and approval by the Director.
In the event of a change of ownership, or a name change, the permittee must
submit a formal permit transfer request to the Division of Water Quality,
accompanied by a completed name/ownership change form, documentation
from the parties involved, and other supporting materials as may be appropriate.
The approval of this request will be considered on its merits and may or may not
be approved. The permittee is responsible for compliance with all permit
conditions until such time as the Division approves the transfer request.
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) having jurisdiction.
4. In the event that the facilities fail to perform satisfactorily, including the creation
of nuisance conditions, the Permittee shall take immediate corrective action,
including those as may be required by this Division, such as the construction of
additional or replacement stormwater management systems.
5. The permittee grants DENR Staff permission to enter the property during normal
business hours for the purpose of inspecting all components of the permitted
stormwater management facility.
Page 5 of 8

State Stormwater Management Systems
Permit No. SW8 060308
6. The permit may be modified, revoked and reissued or terminated for cause. The
filing of a request for a permit modification, revocation and reissuance or
termination does not stay any permit condition.
7. Unless specified elsewhere, permanent seeding requirements for the stormwater
control must follow the guidelines established in the North Carolina .Erosion and
Sediment Control Planning and Design Manual.
8. Approved plans and specifications for this project are incorporated by reference
and are enforceable parts of the permit.
9. The permittee shall notify the Division any name, ownership or mailing address
changes within 30 days.
Permit issued this the 21St day of April, 2006.
NORT CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
or A �anW. Klimek, P.E., Director
Division of Water Quality
By Authority of the Environmental Management Commission
Page 6 of 8

State Stormwater Management Systems
Permit No. SW8 060308
Sunset Marina
Stormwater Permit No. SW8 060308
Brunswick County
Designer's Certification
I, , as a duly registered
in the State of North Carolina, having been authorized to observe (periodically/ weekly/ .
full time) the construction of the project,
(Project)
for (Project Owner) hereby state that, to the
best of my abilities, due care and diligence was used in the observation of the project
construction such that the construction was observed to be built within substantial
compliance and intent of the approved plans and specifications.
The checklist of items on page 2 of this form is included in the Certification.
Noted deviations from approved plans and specification:
Signature
Registration Number
Date
SEAL
Page 7 of 8

State Stormwater Management Systems
Permit No. SW8 060308
Certification Requirements:
.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.
3. All the built -upon area associated with the project is graded such that the
runoff drains to the system.
. All roof drains are located such that the runoff is directed into the system.
5. The bypass structure weir elevation is per the approved plan.
6. The bypass structure is located per the approved plans.
7. A Trash Rack is provided on the bypass structure.
8. All slopes are grassed with permanent vegetation.
9. Vegetated slopes are no steeper than 3:1.
10. The inlets are located per the approved plans and do not cause short-
circuiting of the system.
11. The permitted amounts of surface area and/or volume have been
provided.
12. All required design depths are provided.
13. All required parts of the system are provided.
14. The required system dimensions are provided per the approved plans.
cc: NCDENR-DWQ Regional Office
Delaney Aycock, Brunswick County Building Inspections
Page 8 of 8

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):
Colorado Coastal Development ComDanv
2. Print Owners/Signing Official's name and title (the person legally responsible for facility and compliance):
Steve Shuttleworth, President
3. Mailing Address for person listed in item 2 above:
7741 Market Street, Suite 1
City: Wilmington State: NC
Telephone Number: [phone]
Zip:
28405
4. Project Name (subdivision, facility, or establishment name - should be consistent with project name on
plans, specifications, letters, operation -and maintenance agreements, etc.):
Sunset Marina (Town Homes)
5. Location of Project (street address):
1358 Beach Drive, Calabash, NC 28467
City: Shal Iotte (Township) _ _ County: Brunswick
6. Directions to project (from nearest major intersection):
From the intersection to Hwy 17 and 179 in Calabash take 179 to the Calabash River bridge
_project site is located just after the bridge on the right side of 179 (Beach Drive)_____ _
7. Latitude: 033°53' 16.72"N
Longitude: 078°33'0.00"W of project
8. Contact person who can answer questions about the project:
Name: Brad Sedgwick Telephone Number: 0 619-9990
U. PERMIT INFORMATION:
1. Specify whether project is (check one): X
New Renewal
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 and its issue date (if known)
3. Specify the type of project (check one):
Low Density X High Density Redevelop _General Permit Other
4. Additional Project Requirements (chock applicable blanks):
CAMA Major X Sediment[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.
Overland Flow, Grassed swalcs and infiltration basin or bio-retention
2. Stormwater runoff from this project drain to the
3. Total Project Area: 1.53 Acres
5. How many drainage areas does the project have?
Lumber River basin.
4. Project Built Upon Area: 42 %
4
6. Complete the following information for each drainage area. If there arc 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
Site
Basin 1
Basin 2
Basin 3
Basin 4
Receiving Stream Name
Calabash
Calabash
Calabash
Calabash
Calabash
Receiving Stream Class
SA, HQW
SA, HQW
SA, HQW
SA, HQW
SA, HQW
Drainage Area
1.53 acres
0.21 acres
0.30 acres
0.12 acres
0.90 acres
Existin Impervious* Area.
0.16 acres
0.05 acres
0 acres
0 acres
0.11 acres
Proposed IDpervious* Area
0.49 acres
0.14 acres
0.24 acres
0.10 acres
0 acres
% Impervious* Area (total)
42%
90%
80%
83%
12%
Impervious* Surface Area
Basin
Basin
Basin
Basin
Basin
New Buildings
12,360 sf
4,032 sf
6448 sf
1,880 sf
0 sf
New Asphalt
6,365 sf
1,273 sf
2,960 sf
2,132 sf
0 sf
New Conc. Drive
2,447 sf
916 sf
1,134 sf
397 sf
0 sf
Exist. Buildings
2.599 sf
791 sf
0 sf
0 sf
1,808 sf
Exist. on
4,361 sf
1,501 sf
0 sf
0 sf
2,860 sf
Off site
0 sf
0 sf
0 sf
0 sf
0 sf
Total:
28,132 sf
8,513 sf
10,542 sf
4,409 sf
4,668 sf
F,..-.,,• curt l_tni 1 00 D.,.,o I -CA

7. How was the off -site impervious area listed derived?
NIA
IV. DEED RESTRICTIONS AND PROTECTIVE COVENANTS
The following italicized deed restrictions and protective covenants are required to be recorded for all
subdivisions, out parcels and future development prior to 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 management permit
number as issued by the Division of Water Quality. These
covenants my 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, concrete, brick; stone, slate or
similar material but do not include wood decking or the water surface of swimming pools.
3. Swales shall not be filled in, piped, or altered except as necessary to provide driveway crossings.
4. Built -upon area in excess of the permitted amount requires a state stormwater management permit
modification prior to construction.
5. All permitted runo from out parcels or future development shall be directed into the permitted
stormwater control system. These connections to the stormwater control system shall be performed
in a manner that maintains the integrity and performance of the system as permitted.
By your signature below, you certify that the recorded deed restrictions and protective covenants for this project
shall include all the applicable item 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 SW-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

VI. SUBMITTAL REQUIREMENTS
Only complete application packages will be accepted and reviewed by the Division of Water Quality
(DWQ). A complete package includes all of the items listed below. The complete application
package should be submitted to the appropriate DWQ Regional Office.
Please indicate that you have provided the following required information by initialing in the space provided
next to each item.
• Original and one copy of the Stormwater Management Permit Application Form
• One coov of the anolicable Supplement Form(s) for each BMP
• Permit application mocessine fee of S420 (savable to NCDENRI
• Detailed narrative description of stormwater treatment/manaeement:
• Two conies of plans and specifications. includine:
- 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)
VI. AGENT AUTHORIZATION
If you wish to designate authority to another individual or firm so that they may provide information on your
behalf, please complete this section:
Designated agent (individual or firm): JBS Consulting, PA (Brad SedEwick, PE)
Mailing Address: 7M Cotesworth Dr.
City: Wilmington State: NC Zip: 28401
Phone: [phone] Fax: [phone]
VIII. APPLICANT'S CERTIFICATION
I, (print or type name of person listed in General Information, item 2) Steve Shuttleworth, President
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. 11/� n /)
Signature:
Date:
Form: SWU-101 Version 3.99 Page 4 of 4

Permit No.
(to be provided by DWQ)
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PER 41T APPLICATION FORM
- INFILTRATION BASIN SUPPLEMENT
M form ty be phoucapW 1br use as an original
DWO Stormwate�r 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.
L PROJECT INFORMATION
Project Name
Contact Person:
13V-A.4t> t�C7itl1(c-le--=
?1�-
Phone Number. (fl (a ) (o (`f - 99-1 a_
This worksheet applies to: Basin No. I in Drainage Area f
(- 00MfMd on plans) (from Form SWU-101)
H. DESIGN INFORMATION - Attach supporting calculations/documentation. The soils report must be
based upon an 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 (f nsl).
Soils Report Summary
Soil Type
Infiltration Rabe
SHWT Elevation
Basin Design Paramek
Design Storm
Design Volume
Drawdown Time
Basin Dimensions
Basin size
Basin Volume Provided
Basin Elevations
Bottom Elevation
Storage Elevation
Top Elevation
#'C-TvL-'-�
Q_ m/hr or cf/hrlsf (circle apprnprrate writs)
f '0 f nsl (Seasonal Kgh Water Table elevation)
1.9 inch
19 gis c.f.
0. 13 days
a &x
Z fmsI
f �^ fmsl
(L S inch event for SA waters, I inch event for others)
ft. = 440 sq. & (bottom dimensions)
Form SWU-103 Rev 3.99 Page 1 of 3

II1. 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 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
a. System is located 50 feet from class SA waters and 30 feet from other surface waters.
b. System is located at least 100 feet from water supply wells.
JIB c. Bottom of system is at least 2 feet above the seasonal high water table.
c d. Bottom of the system is 3 feet above any bedrock or impervious soil horizon.
e. System is not sited on or in fill material or DWQ approval has been obtained.
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.
g. Drainage area for the device is less than 5 acres.
j12 h. Soils have a minimum hydraulic conductivity of 0.52 inches per hour and soils report is
attached.
1,? 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.
j. 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.
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.
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.
OAC 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).
�- - o.
Flow distribution mechanism within the basin is provided.
p.
A benchmark is provided to determine the sediment accumulation in the pretreatment device.
q.
Runoff in excess of the design volume bypasses off-line systems (bypass detail provided).
2 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.
. 2 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.
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
vegetated 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 Q. 31 feet in the pretreatment unit, the sediment shah be
removed from both the pretreatment unit and the infiltration basin.
5. If the Division determines that the 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.
1 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: '5T&-V} `7i�y`TT�F_l�ezi
�-1
A�tTrto�Z �7
�i p'I-T
Address:
Phone:
Date:
4 - TZ? —Ole
Note: Ae 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.
[, a{ (L" P YW L."+"" _ , a Notary Public for the State of d,' l r10. , County of
AJ&A) 0 do hereby ertify that - kjL W-el QWW k personally appeared before me this A3
day of , If Gl.1_ N_-w,d�Q�, and acknowledge the due execution of the forgoing infiltration basin maintenance requirements.
Witness r�tW4�pd official seal,
'iy �""Y*vMy
Al
S = � 'fo. G S commission expires OA0it
isoiary ', �i
Page 3 of 3

BIORETENTION SYSTEM OPERATION AND MAINTENANCE PLAN
Project Name Sunset Marina (Town Homes) Applies to Basin # Z
The permittee shall be responsible for the following maintenance procedures regarding the
permitted bio-retention system.
The plant material will be watered every day for fourteen consecutive days, and after planting
has been completed.
AS NEEDED:
1. Treat all diseased trees, shrubs and vegetation.
2. Replace deficient, defective or rotted support stakes.
3. Check the entire collection system for sediment accumulation, clogging, broken
pipes and grates, leaks, etc. Repair as required.
4. Mow the grassed areas of the basin when it reaches a maximum height of 6".
MONTHLY:
1. Inspect and repair any eroded areas and remove trash.
2. Remulch any void areas.
TWICE A YEAR:
1. Remove and replace dead and/or untreatable diseased vegetation.
2. Replace support stakes as needed in the spring.
YEARLY
1. Apply a new layer of mulch in the spring. Remove the previous mulch layer before
applying a new layer.
2. Remove any accumulated sediment.
I acknowledge and agree by my signature below that I am responsible for the performance of
the maintenance procedures listed above. I agree to notify DWO of any problems with the
system and prior to making any changes to the system or to the responsible party.
Print name
Address
Phone:
Signature
Steve Shuttleworth Title Authorized Agent
Note: For subdivision, the legally responsible party should not be a homeowners association or property
owner's association unless more than 50% of the lots have been sold and a resident of the subdivision
has been named the president.
I, I Y U y , a Notary Public for the State of
o County of 0 do hereby
certify that 5 ei r personally appeared before me
this the I day ofo (n and acknowledge the due
exe ution of the fore ing i trument. Witness my hand and official seal,
My commission expires 3410
SEAL
`�� GOIN1�•7 ��.y�yG�ii
ipll +gyp, y,00

Permit No. I>'6 b Unaca
(to be provided by DWQ)
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
INFELTRATION BASIN SUPPLEMENT
7M Am may bephowcopied for use as an oft
DM 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 stoimwater conveyances and system details.
Project Name : 5uss � A Iv1A CT w a
Contact Person: �.��.r> �,�'cx--ttJ I c�— j Phone Number. Lilo ) Co �`�► ` �9 0
This worksheet applies to: Basin No. _ , _ in Drainage Area 3
(- ijted or, pl—) (jinn Form SWGLI DI)
H. DESIGN INFORMATION - Attach supporting calculatioiWdocumentation. The soils report must be
based upon an 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 (fist).
Soils Report Summary
Soil Type 'o L
Infiltration Rate r in/hr or cf/hr/sf (circle appropriate units)
SHWT Elevation E Z fmsl (Seasonal High Water Table elevation)
Basin Design Parameters Design Storm f i f5 inch (1.s inch event for s,4 waters, I inch event for others)
Design Volume ` 0-5 c.f.
Drawdown Time 0. 16 days
Basin Dimensions
Basin Size `✓ $. x ft = sq. & (bottom dimensions)
Basin Volume Provided c_i
Basin Elevations
Bottom Elevation /3.5 fimsl
Storage Elevation 15.0 fmsi
Top Elevation / x5 , fmsl
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 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
Q� a. System is located 50 feet from class SA waters and 30 feet from other surface waters.
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.
QAOP7 d. Bottom of the system is 3 feet above any bedrock or impervious soil horizon.
e. System is not sited on or in fill material or DWQ approval has been obtained.
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.
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.
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.
j. 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.
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.
_ 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).
��� o. blow distribution mechanism within the basin is provided.
p. A benchmark is provided to determine the sediment accumulation in the pretreatment device.
q. Runoff in excess of the design volume bypasses off-line systems (bypass detail provided).
O'wk 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_ .
9)Z— 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.
Form SWU-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
vegetated 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 d , 37 feet in the pretreatment unit, the sediment shall be
removed from both the pretreatment unit and the infiltration basin.
If the Division determines that the 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:15nKVf_� AAL- ►�
Address: 734k >N[,a,�xT PJFrFT�►TF i W tt-ttlrJr,Ti�r•lr �L �`��
„P-M
Signature:
Date: / - Z­3 —v;d
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. {
I, k , a Notary Public for the State of Ab Y-%1i q-. , County of
NCW tknetr2.v , do here y certify that personally appeared before me this
day of
o1006 , and acknowledge the due execution of the forgoing infiltration basin maintenance requirements.
official seal,
GOMu '•."9
F-Y,a•. G
Tlatary •g
PubCs(, o c
G�0,
9)T__U%%Tzev 3.99
My commission expires (D QL5f 2 I10-0 1 d
Page 3 of 3