HomeMy WebLinkAboutSW8060338_HISTORICAL FILE_20090522STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO
SW8 (�l0 033�3
DOC TYPE
❑ CURRENT PERMIT
❑ APPROVED PLANS
HISTORICAL FILE
❑ COMPLIANCE EVALUATION INSPECTION
DOC DATE
2 0 0 g 0 5 22
YYYYMMDD
r
NCDENR
North Carolina Department of Environment and Natural Resources
Beverly Eaves Perdue
Governor
May 22, 2009
Mr Sheldon Tucker, Manager
Ocean Isle Palms, LLC
131 Ocean Blvd West
Hoiden Beach, NC 28462
Division of Water Quality
Colleen H Sullins
Director
Subject Stormwater Permit No SW8 060338 MOD
Ocean Isle Palms Phase 1
High Density Subdivision Project
Brunswick County
Dear Mr Tucker
Dee Freeman
Secretary
The Wilmington Regional Office received a modified Stormwater Management Permit application
for Ocean Isle Palms Phase 1 on May 13, 2009, with additional information submitted on May 21, 2009
The modifications include changes to the total impervious area to ponds for a few additional lots, and
miscellaneous other changes such as pond outlet structure details on the plans Staff review of the plans
and specifications has determined that the project, as proposed, will comply with the Stormwater
Regulations set forth in Title 15A NCAC 2H 1000 We are forwarding Permit No SW8 060338 MOD, dated
May 22, 2009, for the construction of the project, Ocean Isle Palms Phase 1
This permit shall be effective from the date of issuance until November 29, 2017, 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
Please replace the application documents, plan set, and supplements previously approved on
November 29, 2007 and March 30, 2009, with new ones, attached If you have any questions please
contact M J Naugle or me at (910) 796-7215
Sinc rely,
� �s
Georgette Scott
Stormwater Supervisor
Division of Water Quality
GDS/mjn S \WQS\STORMWATER\PERMIT\060338 mod may09
cc Tom Purvis, P E , Cape Fear Engineering, 910-383-1044, fax 1045
Ocean Isle Beach Building Inspections
Jeff Phillips, Brunswick County Engineering
-Wilmington Regional Office
Central Files, M J Naugle
Wilmington Regional Office
127 Cardinal Drive Extension Wilmington North Carolina 28405 One
Phone 910 796 7215 \ FAX 910 350 2004 \ Customer Service 1-877 623-6748 NarihCarottna
Internet ncwalerquallty org-1�����
An Equal Opportunity l Affirmative Action Employer (�/�/ sHally
State Stormwater Management Systems
Permit No SW8 060338MOD
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
STATE STORMWATER MANAGEMENT PERMIT
HIGH DENSITY SUBDIVISION 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
Sheldon Tucker & Ocean Isle Palms, LLC
Ocean Isle Palms Phase 1
1338 Ocean Isle Beach Road, Ocean Isle Beach, Brunswick County
FOR THE
construction, operation and maintenance of three (3) wet detention pond(s) 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 November 29, 2017 and shall be
subject to the following specified conditions and limitations
I DESIGN STANDARDS
This permit is effective only with respect to the nature and volume of stormwater
described in the application and other supporting data
2 This stormwater system has been approved for the management of stormwater runoff as
described in Section 16 on page 3 of this permit The subdivision is permitted for 238
lots, each allowed a maximum of 6,000 square feet of built -upon area The Amenity
Center and Canoe and Kayak Club are limited to a maximum of 93,654 square feet and
2,614 square feet, respectively, of built -upon area Future bua in drainage areas routed
to ponds #12 and 21 are allocated for 26,877 and 29,500 square feet, respectively
Development of the future bua requires a submittal of plans and details with approval by
the Division prior to construction
3 Approved plans and specifications for this project are incorporated by reference and are
enforceable parts of the permit
4 The runoff from all built -upon area within the permitted drainage area of this project must
be directed into the permitted stormwater control system
5 Each of the ponds is designed for 90% TSS removal, therefore, no vegetated filter is
required
Page 2 of 9
State Stormwater Management Systems
Permit No SW8 060338MOD
6 The following design elements have been permitted for the wet detention ponds 12, 14
and 21, and must be provided in the system at all times
Design Criteria
Pond #12
Pond #14
Pond #21
a Drainage Area, acres
2482
51 27
2511
Onsite, ft`
1,081,159
2,233,321
1,093,685
Offsite, ft'
none
none
none
b Total Impervious Surfaces, ft
545,807
1,151,623
561,672
(#)Lots at 6,000 ft` per lot
(69 5) 417,000
(125) 750,000
(43 5) 261,000
Roads/Parking, W
95,396
279,655
134,557
Sidewalks, ft`
871
0
22,548
Alleyways, ft`
3,049
121,968
20,413
Canoe & Kayak Club
2,614
0
0
Amenity Center, ft`
0
0
93,654
Off -site
0
0
0
Future
26,877
0
29,500
c Pond Depth, ft
60
13 max
11 0 (max)
Average Pond De th, ft
50
70
65
d TSS removal efficiency, %
90
90
90
e Design Storm, inches
1
1
1
f Permanent Pool Elev, , FMSL
3600
800
600
Perm Pool Surface Area, ft
95,110
50,491
62,543
h Permitted Storage Volume, ft
204,215
108,618
131,772
i Temporary Storage Elev, , FMSL
3800
990
8
Controlling Onfice, "0 i e
3
4
3
k Permanent Pool Volume, ft
484,740
359,604
355,575
1 Permitted Forebay Volume, ft
45,512
59,126
107,554
m Maximum Fountain Horsepower
2
1
1
n Receiving Stream/River Basin
UT to Jinny's Branch /
Lumber
o Stream Index Number
15-25-2-16-1-(1 5)
Classification of Water Body
C Sw,HQW
II SCHEDULE OF COMPLIANCE
No person or other legal entity shall alter the approved stormwater management system
or fill in, alter or pipe any drainage feature, including swales, shown on the approved
plans as part of the stormwater management system, unless and until the permittee
submits a modification to the permit and receives approval from the Division
The permittee is responsible for verifying that the proposed built -upon area on each
individual lot, and for the entire project, does not exceed the maximum allowed by this
permit
The maximum built -upon area assigned to each lot via this permit and the recorded deed
restrictions may not be increased or decreased by or with the knowledge of, either the lot
owner or the permittee, unless and until the permittee notifies the Division and obtains
written approval from the Division At a minimum, this will require an amendment to the
recorded deed restrictions, and may also require a permit modification
If the permittee establishes an Architectural Review Board or Committee to review plans
for compliance with the Covenants and Restrictions, including the lot BUA limit, the plans
reviewed must include all proposed built -upon area on that lot Any approval given by
the Board on behalf of the permittee does not relieve the permittee of the responsibility
to maintain compliance with the overall permitted built -upon area for the protect, nor
does it relieve the individual lot owner of the responsibility to maintain compliance with
the BUA limit assigned to that lot via the recorded deed restrictions
Page 3 of 9
State Stormwater Management Systems
Permit No SW8 060338MOD
5 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
6 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
7 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 the approved plans, regardless of size
b Project name change
c Transfer of ownership
d Redesign or addition to the approved amount of built -upon area
e Further subdivision, acquisition, or sale of all or part of the protect area The
protect 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
8 The Director may determine that other revisions to the protect should require a
modification to the permit
9 All stormwater collection and treatment systems must be located in either dedicated
common areas or recorded easements The final plats for the protect will be recorded
showing all such required easements, in accordance with the approved plans
10 During construction, erosion shall be kept to a minimum and any eroded areas of the
system will be repaired immediately
11 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
12 If the stormwater system was used as an Erosion Control device, it must be restored to
design condition prior to operation as a stormwater treatment device, and prior to
occupancy of the facility
13 Permanent seeding requirements for the stormwater control must follow the guidelines
established in the North Carolina Erosion and Sediment Control Planning and Design
Manual
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 This permit shall become void unless the facilities are constructed in accordance with
the conditions of this permit, the approved plans and specifications, and other supporting
data
Page 4 of 9
State Stormwater Management Systems
Permit No SW8 060338MOD
16 The permittee shall at all times provide the operation and maintenance necessary to
assure that all components of the permitted stormwater system function 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 re -vegetation 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 structures, orifice, catch basins and piping
g Access to all components of the system must be available at all times
17 Prior to the sale of any lot, the following deed restrictions must be recorded
a The following covenants are intended to ensure ongoing compliance with State
Stormwater Management Permit Number SW8 060338MOD, as issued by the
Division of Water Quality under NCAC 2H 1000
b The State of North Carolina is made a beneficiary of these covenants to the
extent necessary to maintain compliance with the Stormwater Management
Permit
c These covenants are to run with the land and be binding on all persons and
parties claiming under them
d The covenants pertaining to stormwater may not be altered or rescinded without
the express written consent of the State of North Carolina, Division of Water
Quality
e Alteration of the drainage as shown on the approved plans may not take place
without the concurrence of the Division of Water Quality
f The maximum built -upon area per lot is 6,000 square feet for 238 lots 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, coquina and parking areas, but does
not include raised, open wood decking, or the water surface of swimming pools
g All runoff on the lot must drain into the permitted system 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 will naturally drain into the system
are not required to provide these measures
h Built -upon area in excess of the permitted amount will require a permit
modification
18 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
contain all of the statements above, the signature of the Permittee, the deed book
number and page, and the stamp/signature of the Register of Deeds
19 Prior to transfer of the permit, the stormwater facilities will be inspected by DWQ
personnel The facility must be in compliance with all permit conditions Any items not in
compliance must be repaired or replaced to design condition prior to the transfer
Records of maintenance activities performed to date will be required
Page 5 of 9
State Stormwater Management Systems
Permit No SW8 060338MOD
20 Decorative spray fountains will be allowed in the stormwater treatment system, subject
to the following criteria
a The fountain must draw its water from less than 2 foot below the permanent pool
surface
b Separated units, where the nozzle, pump and intake are connected by tubing, may
be used only if they draw water from the surface in the deepest part of the pond
c The falling water from the fountain must be centered in the pond, away from the
shoreline
d The maximum horsepower for the fountain's pump is based on the permanent pool
volume The maximum pump power for a fountain in Pond #12, 14, and 21 is 2 HP,
1 HP, and 1 HP, respectively
III GENERAL CONDITIONS
1 This permit is not transferable to any person or entity except after notice to and approval
by the Director In the event there is either a desire for the facilities to change
ownership, or there is a name change of the Permittee, a completed "Name/Ownership
Change Form" must be submitted to the Division of Water Quality, signed by the parties
involved, along with the applicable documents as listed on page 2 of the form 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 The permittee is responsible for compliance with all of the terms and conditions of this
permit until such time as the Director approves the transfer request
3 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
4 The issuance of this permit does not preclude the Permittee from complying with any
and all statutes, rules, regulations, or ordinances, which may be imposed by other
government agencies (local, state, and federal), which have jurisdiction
5 In the event that the facilities fail to perform satisfactorily, including but not limited to, the
creation of nuisance conditions and failing to draw down within 2-5 days, 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
6 The permit may be modified, revoked and reissued or terminated for cause The filing of
a request for a permit modification, revocation and re -issuance or termination does not
stay any permit condition
7 Permittee grants permission to staff of the DWQ to access the property for the purposes
of inspecting the stormwater facilities during normal business hours
8 The permittee shall notify the Division in writing of any name, ownership or mailing
address changes at least 30 days prior to making such changes
9 The permittee shall submit a permit renewal application to the Division at least 180 days
prior to the expiration date of this permit The renewal application will include the
processing fee and other documentation as required
Page 6 of 9
State Stormwater Management Systems
Permit No SW8 060338MOD
10 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
Permit modified and reissued this twenty-second day of May 2009
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
for Meen H SlOins, Director
Division of Water Quality
By Authority of the Environmental Management Commission
Permit Number SW8 060338MOD
Page 7 of 9
State Stormwater Management Systems
Permit No SW8 060338MOD
Ocean Isle Palms Phase 1
Stormwater Permit No SW8 060338MOD
Brunswick County
Designer's Certification
Page 1 of 2
I, , as a duly registered in the State
of North Carolina, having been authorized to observe (periodically/weekly/full time) the
construction of the protect,
(Protect)
for
Owner) hereby state that, to the best of
my abilities, due care and diligence was used in the observation of the protect 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 a part of this Certification
Noted deviations from approved plans and specifications
Signature
Registration Number
Date
SEAL
Page 8 of 9
J
State Stormwater Management Systems
Permit No SW8 060338MOD
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
3 All the built -upon area associated with the project is graded such that the runoff
drams to the system
4 All roof drains are located such that the runoff is directed into the system
5 The outlet/bypass structure elevations are per the approved plan
6 The outlet structure is located per the approved plans
7 Trash rack is provided on the outlet/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 Required draw down devices are correctly sized per the approved plans
13 All required design depths are provided
14 All required parts of the system are provided, such as a vegetated shelf, a
forebay, and the vegetated filter
15 The required dimensions of the system are provided, per the approved plan
cc NCDENR-DWQ Regional Office
Ocean Isle Beach Building Inspections
Brunswick County Building Inspections
Page 9 of 9
RECETV laQ�2�
4? N
DWO'08EONL ---
Date Received
�� _Fee Paid
Permit Number
rnA� ► ���g
g�
3
min
IN
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
This form may be photocopied for use as an original
I GENERAL INFORMATION
1 Applicants name (specify the name of the corporation, individual, etc who owns the project)
Ocean Isle Palms, LLC
2 Print Owner/Signing Official's name and title (person legally responsible for facility and compliance)
Sheldon Tucker, Manager
3 Mailing Address for person listed in item 2 above
131 Ocean Boulevard West
City Holden Beach State NC Zip 28462
Phone (910 ) 6124899 Fax
Email stucker2491@aol corn
4 Project Name (subdivision, facility, or establishment name - should be consistent with project name on plans,
specifications, letters, operation and maintenance agreements, etc )
Ocean Isle Palms Phase 1
5 Location of Project (street address)
1338 Ocean Isle Beach Road
City Ocean Isle Beach County NC Zip 28469
6 Directions to project (from nearest major intersection)
Take US Hwy 17 south to SR 1194 (Ocean Isle Beach Road) Take left on SR 1184 Site is approximately 5
7 Latitude 330 55' 11 55" N Longitude 78' 26 39 72" W of project
8 Contact person who can answer questions about the project
Name Tom Purvis, P E Telephone Number (910 ) 383-1044
Email tom purvis@capefearengmeenng corn
II PERMIT INFORMATION
1 Specify whether project is (check one)
❑New
❑Renewal ®Moddication
M
Form SWU-101 Version 09 25 08 Page I 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 SW8 060338 and its issue date (if known)November 29, 2007
3 Specify the type of project (check one)
❑Low Density (gFhgh Density []Redevelop ❑General Permit ❑Universal SMP []Other
4 Additional Project Requirements (check applicable blanks, information on required state permits can be
obtained by contacting the Customer Service Center at 1-877-623-6748)
❑CAMA Major ®Sedunentation/Erosion Control ❑404/401 Permit ❑NPDES Industrial Stormwater
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
Stormwater runoff from aft impervious surfaces will be collected and treated in 3 wet dentention basins
2 Stormwater runoff from this project drams to the Lumber River basm
3 Total Property Area 114 45 acres 4 Total Coastal Wetlands Area 0 acres
5 Total Property Area (3) - Total Coastal Wetlands Area (4) = Total Project Area" 114 45 acres
6 (Total Impervious Area / Total Project Area) X 100 - Project Built Upon Area (BUA) 45 %
7 How many drainage areas does the project have73
8 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 mformabon for each area provided in the same format as below
I�
Impervious area is defined as the built upon area including, but not limited to, buildings, roads, parting areas,
sidewalks, gravel areas, etc
"Total project area shall be calculated to exclude Coastal Wetlands from use when calculating the built upon area
percentdge calculation This is the area used to calculate overall percent project built upon area (BUA) _
FormSWU-101 Version092508 Page 2of4 MAY 2 12D09
7kRED5C VED
AY 2009
Basin Information
Drainage Area 3, Pond 21
Receiving Stream Name
Jmn s Branch
IBY
Receiving Stream Class & Index No
C Sw HQW,15-25-2-16-1- 1 5
Total Drainage Area (sf)
1,093,685
On -site Drainage Area (sf)
1,093,685
Off -site Drainage Area (st)
0
Existing Impervious* Area (sf)
0
Proposed Im ervious* Area (sf)
561,672
% Impervious* Area (total)
51 36
Impervious* Surface Area
Drainage Area Pond 21
On -site Buildings (sf)
261,000 ✓
>= 4aGLbis
On -site Streets (sf)
134,557 ✓
On -site Amenity Center (sf)
93,654
On -site Sidewalks (sf)
22,548 ✓
On -site RESERVE (future)
29,500 ✓
Other on -site (sf)
A ley Ways = 20,413
Off -site (sf)
0
Total
561,672
to -
Page 2A of 4
9 How was the off -site impervious area listed above
MAY 1 8 2009
Projects in Union County Contact the DWQ Central Office staff to check to see f you project is located
within a Threatened & Endangered Species watershed that may be subject to more stringent stormwater
requirements
IV DEED RESTRICTIONS AND PROTECTIVE COVENANTS
One of the following property 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
Forms can be downloaded from http /P12o enr state nc us/su/bmp forms htm - deed restrictions
Form DRPC-1
High Density Commercial Subdivisions
Form DRPC-2
High Density Developments with Outparcels
Form DRPC-3
High Density Residential Subdivisions
Form DRPC4
Low Density Commercial Subdivisions
Form DRPC-5
Low Density Residential Subdivisions
Form DRPC-6
Low Density Residential Subdivisions with Curb Outlets
By your signature below, you certify that the recorded property restrictions and protective covenants for this
project shall include all the applicable items required in the above form, 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 NC DWQ 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 Permitting Unit at (919) 807-6300 for the status and
availability of these forms Forms can be downloaded from htto //h2o enr state nc us/su/bmp forms htm
Form SW401-Low Density
Form SW401-Curb Outlet System
Form SW401-Off-Site System
Form SW401-Wet Detention Basin
Form SW401-Infiltration Basin
Form SW401-Infiltration Trench
Form SW401-Bioretention Cell
Form SW401-Level Spreader
Form SW401-Wetland
Form SW401-Grassed Swale
Form SW401-Sand Filter
Form SW401-Permeable Pavement
Form SW401-Cistern
Low Density Supplement
Curb Outlet System Supplement
Off -Site System Supplement
Wet Detention Basin Supplement
Infiltration Basin Supplement
Underground Infiltration Trench Supplement
Bioretention Cell Supplement
Level Spreader/Filter Strip/Restored Riparian Buffer Supplement
Constructed Wetland Supplement
Grassed Swale Supplement
Sand Filter Supplement
Permeable Pavement Supplement
Cistern Supplement
Form SWU-101 Version 09 25 08 Page 3 of
VI SUBMITTAL REQUIREMENTS
MAY 1 8 200E
Only complete application packages will be accepted and reviewed by I��iwsion o�tYatec¢u�hty (DWQ)
A complete package includes all of the items listed below The comple pp ication package should be
submitted to the appropriate DWQ Office (Appropriate office maybe found by locating project on the
interactive online map at http //h2o enr state nc us/su/msi maps htm)
1 Please indicate that you have provided the following required information by mitialmg in the space provided
next to each item
Inth
• Original and one copy of the Stormwater Management Permit Application Form
• Original and one copy of the Deed Restrictions &Protective Covenants Form (if
required as per Part IV above)
• Original of the applicable Supplement Form(s) and O&M agreement(s) for each BMP
• Permit application processing fee of $505 (Express $4,000 for HD, $2,000 for LD) /
payable to NCDENR
• Calculations & detailed narrative description of stormwater treatment/management
• Copy of any plans
anlicable soils report
• Two copies off plplans and specifications (sealed, signed &dated), 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 authority to another individual or firm so that they may provide information on your
behalf (such as additional information requests), please complete this section (ex designing engineer or firm)
Designated agent (individual or firm) Cape Fear Engineering Inc
Mailing Address 151 Poole Road Suite 100
City Belville State NC Zip 28451
Phone (910 1 383-1044 Fax (910 ) 383-1045
Email tom purvis@capefearengmeering com
VIII APPLICANT'S CERTIFICATION
I, (print or hype name of person listed in General Information, itein 2) Sheldon Tucker
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 restrichons
and protechve covenants will be recorded, and that the proposed project complies with the requirements of 15A
NCAC 2H 1000 , , ,
Signature Date 4c Q
Form SWU-101 Version 09 25 08 Page 4 of
Permit No SW8 060338 Modification
(to be piovided b) DIt Q)
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMI'l APPLICAI ION FORM
VET DETENTION BASIN SUPPLEMENT
This foi m may be photocopied foi use as an original
DWQ Stormwater Management Plan Review
A complete storniwater management plan submittal includes an application form, a wet detention basin
supplement for each basin, design calculations, and plans and specifications showing all basin and outlet
structure details
I PROJECT INFORMATION
Project Name Ocean isle Palms Phase i
Contact Person Sheldon Tucker
Phone Number (910 ) 612-4899
For project with multiple basins, specify which basin this worksheet applies to Pond #14
elevations
Basin Bottom Elevation
Permanent Pool Elevation
Tentpotary Pool Elevation
areas
Permanent Pool Surface Area
Drainage Area
Impervious Area
volumes
Permanent Pool Volume
Temporary Pool Volume
Forebay Volume
Other parametei s
SA/DA'
Diameter of Orifice
Design Rainfall
Design TSS Rcmova1 2
-5 00
ft
Soo
It
990
ft
50,491
sq ft
51 27
ac
25 88
ac
359,604
cu ft
108,618
cu It
59,124
cu ft
1 93
4
n
I
in
90
%
(floor of the basin)
(elevation of the in tfice)
(elevation of the dischaige sti actin e overfloit)
(wotei surface area at the orifice elevation)
(on-sde and off -site drainage to the basin)
(on -site and off -site drainage to the bortn)
(combined volume of main basin and forebay)
(volume detained above the permanent pool)
(approximately 20% of total volume)
(surface area to drainage ai ea i aito from DWQ table)
(2 to 5 day temporal y pool di aiv-down requn ed)
(minimum 85% requu ed)
Funn SWII 102 Rss 199 Pig( I ul4
Footnotes
When using the Division SA/DA tables the correct SA/DA ratio for permanent pool siting should be computed based upon the
actual impervious %and permanent pool depth Lmear interpolation should be employed to determine the correct Value for non-
standard table entries
2 In the 20 coastal counties the requirement for a se_etative filter may be waived it the wet detention basin is designed to providt
90% TSS removal The NCDENR WOP manual provides design tables for both 8J% FSS removal and 90% l SS removal
11 REQUIRED ITEMS CHECKLIST
The following checklist outlines design requirements per the Stormwater Best Management Practices Manual
(N C Department of Environment, I fealth and Natural Resources February 1999) and Administrative Code
Section 15 A NCAC 211 1008
Initial in the space provided to indicate 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 If a requirement has not been met, attach .justification
The permanent pool depth is between 3 and 6 feet (required minimum of 3 feet)
The forebay volume is approximately equal to 20% of the basin volume
The temporary pool controls runoff from the design storm event
The temporary pool draws down in 2 to 5 days
It required a 30-foot vegetative filter is provided at the outlet ( include non -erosive flow
(alculations)
The basin length to width ratio is greater than 3 1
I he basin side slopes above the permanent pool are no steeper than 3 1
A submerged and vegetated perimeter shelf with a slope of 6 1 or less (show detail)
Vegetative cover above the permanent pool elevation is specified
A trash rack or similar device is provided for both the o� erflow and orifice
A recorded drainage easement is prop ided for each basin including access to nearest right-
of—way
It the basin is used for sediment and erosion control during construction, clean out of the
basin is specified prior to use as a wet detention basin
A mechanism is specified which will dram the basin for maintenance or an emergency
III WET DETENTION BASIN OPERATION AND MAINTENANCE AGREEMENT
The wet detention basin system is defined as the wet detention basin, pretreatment including forebays and the
vegetated filter it one is provided i
This system (check one) 0 does 0 does not incorporate a vegetated filter at the outlet
This sy stem (check one) 0 does 0 does not incorporate pretreatment other than a forebay
Form SWU-102 Rev 3 99 Page 2 of 4
Maintenance activities shall be performed as follows
After every significant runoff producing rainfall event and at least monthly
Inspect the wet detention basin system for sediment accumulation, erosion, trash accumulation,
vegetated cover, and general condition
b Check and clear the orifice of any obstructions such that drawdown of the temporary pool occurs within
2 to 5 days as designed
2 Repair eroded areas immediately, re -seed as necessary to maintain good vegetative cover, mow vegetative
cover to maintain a maximum height of six inches, and remove trash as needed
Inspect and repair the collection system (i e catch basins, piping, swales, riprap, etc ) quarterly to maintain
proper functioning
Remove accumulated sediment from the wet detention basin system semi-annually or when depth is
reduced to 75% of the original design depth (see diagram below) Removed sediment shall be disposed of
in an appropriate manner and shall be handled in a manner that will not adversely impact water quality (i e
stockpiling near a wet detention basin or stream, etc )
The measuring device used to determine the sediment elevation shall be as such that it will give an accurate
depth reading and not readily penetrate into accumulated sediments
When the permanent pool depth reads _ 9 75_ feet in the main pond, the sediment shall be removed
When the permanent pool depth reads _9 75_ feet in the forebay, the sediment shall be removed
Sediment RemovN El -1 75'
Bottom Elevation \ -5 00'
FOREBAY
BASIN DIAGRAM
ill in the blanks)
Permanent Pool Elwation = 8 00
75"
Sediment Removal Elevation = 175 7Y7
25%
Bottom Elevation = 5 00 ?Y7
MAIN POND
Remove cattails and other indigenous wetland plants when they cover 50% of the basin surface These
plants shall be encouraged to grow along the vegetated shelf and forebay berm
If the basin must be drained for an emergency or to perform maintenance, the flushing of sediment through
the emergency dram shall be minimized to the maximum extent practical
Form SWU-102 Rev 3 99 Page 3 of 4
7 All components of the wet detention basin system shall be maintained in good working order
I acknowledge and agree by my signature below that 1 am responsible for the performance of the seven
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
Title Sec
Sheldon Tucker
Address 131 Ocean Blvd West Holden Beach, NC 28462
Phone 910-612-4899
Signature
Date $ o
Note The legally responsible party should not be a homeowners association unless more than DO% of the lots have been sold and a
resident of the subdivision has been named the president
I -�rMy raX ,J Wio I/ Ij20 a Notary Public for the State of AlokJN CA/LDI N4
County of AIW PAiV0V6;g, do hereby certify that SNC20a/i!-u4Iz&2
personally appeare re me this pZj`�% day of ,,�{�Ug7 gpo7 and acknowledge the due
executiop, ofet fAre of g t detention basin maintenance requirements Witness my hand and official seal,
J
•oUBf_IG
SEAL
My commission expires 670rN1 t 9' �00�
Form SWU-102 Rev 3 99 Page 4 of 4
C]
Permit No SW 8 060338 Modification _
(to be provided by DWQ)
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
WET DETENTION BASIN SUPPLEMENT
This form may be photocopied for use as an original
DWO Stormwater Management Plan Review
A complete stormwater management plan submittal includes an application form, a wet detention basin
supplement for each basin, design calculations, and plans and specifications showing all basin and outlet
structure details
I PROJECT INFORMATION
Project Name Ocean Isle Palms Phase I
Contact Person Sheldon Tucker
Phone Number (910 ) 612-4899
For project with multiple basins, specify which basin this worksheet applies to Pond #21
elevations
Basin Bottom Elevation
Permanent Pool Elevation
remporary Pool Elevation
areas
Permanent Pool Surface Area
Drainage Area
Impervious Area
volumes
Permanent Pool Volume
Temporary Pool Volume
Forebay Volume
Other parameters
SA/DA
Diameter of Orifice
Design Rainfall
Design TSS Removal 2
-5 00, -7 00 ft
600
ft
7 10
It
50,795
sq ft
21 16
ac
11 11
ac
280 903
cu ft
63 553
cu ft
62,416
cu ft
3 30
%
3
in
1
in
90
%
(floor of the basin)
(elevation of the orifice)
(elevation of the discharge structure overflow)
(water surface area at the orifice elevation)
(on -sue and off -site drainage to the basin)
(on -sue and off -sue drainage to the basin)
(combined volume of main basin and forebay)
(volume detained above the permanent pool)
(approximately 20% of total volume)
(surface area to drainage area ratto from DPVQ table)
(2 to 5 day temporary pool draw -down required)
(minimum 85% required)
Form SWU-102 Rcv 3 99 Page 1 of 4
J
Footnotes
When using the Division SA/ DA tables the correct SA/DA ratio for permanent pool sizing should be computed based upon the
actual impervious % and permanent pool depth Lmcar interpolation should bt employed to determine the correct value for non
standard table entries
2 In the 20 coastal counties the requirement for a vegetative filter may be �4dived if the "et detention basin is designed to provide
90% rSS removal the NCDENR BMP manual pros ides design tables for both 85%TSS ieinoval and 90%TSS removal
11 REQUIRED ITEMS CHECKLIST
I he following checklist outlines design requirements per the Stormwater Best Management Practices Manual
IN 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 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 If a requirement has not been met, attach justification
The permanent pool depth is between 3 and 6 feet (required minimum of 3 feet)
The torebay volume is approximately equal to 20% of the basin volume
The temporary pool controls runoff from the design storm event
"I he temporary pool draws down in 2 to 5 days
If required, a 30-foot vegetative filter is provided at the outlet ( include non -erosive flow
calculations)
The basin length to width ratio is greater than 3 I
The basin side slopes above the permanent pool are no steeper than 3 1
A submerged and vegetated perimeter shelf w ith a slope of 6 1 or less (show detail)
Vegetative cover above the permanent pool elevation is specified
A trash rack or similar device is provided for both the overflow and orifice
A recorded drainage easement is provided for each basin including access to nearest right -
of —way
If the basin is used for sediment and erosion control during construction clean out of the
basin is specified prior to use as a wet detention basin
A mechanism is specified which will dram the basin for maintenance or an emergency
III WET DETENTION BASIN OPERATION AND MAINTENANCE AGREEMENT
Fhe wet detention basin system is defined as the wet detention basin, pretreatment including forebays and the
vegetated filter if one is provided
This system (check one) does does not incorporate a vegetated filter at the outlet
This system (check one) does does not incorporate pretreatment other than a forebay
Form SWU-102 ReN 3 99 Page 2 of 4
e.
Maintenance activities shall be performed as follows
After every significant runoff producing rainfall event and at least monthly
Inspect the wet detention basin system for sediment accumulation, erosion, trash accumulation,
vegetated cover, and general condition
Check and clear the orifice of anv obstructions such that drawdown of the temporary pool occurs within
2 to 5 days as designed
Repair eroded areas immediately, re -seed as necessary to maintain good vegetative cover, mow vegetative
cover to maintain a maximum height of six inches, and remove trash as needed
Inspect and repair the collection system (i e catch basins, piping, swales, riprap, etc ) quarterly to maintain
proper functioning
Remove accumulated sediment from the wet detention basin system semi-annually or when depth is
reduced to 75% of the original design depth (see diagram below) Removed sediment shall be disposed of
in an appropriate manner and shall be handled in a manner that will not adversely impact water quality (i e
stockpiling near a wet detention basin or stream, etc )
The measunng device used to determine the sediment elevation shall be as such that it will give an accurate
depth reading and not readily penetrate into accumulated sediments
When the permanent pool depth reads 8 25 and 9 75 feet in the main pond, the sediment shall be removed
When the permanent pool depth reads _5 25'_ feet in the forebay, the sediment shall be removed
Sediment Remo El _0 7)
7> %
Bottom Elevation -1 00_
FUTNETWITEM
BASIN DIAGRAM
(fill in the blanks)
Permanent Pool Elevation = 6 00
Sediment Remo%a] Elevation = 225, 375 75%
2
Bottom Elevation = )00, 70 95%
MALN POND
Remove cattails and other indigenous wetland plants when they cover 50% of the basin surface These
plants shall be encouraged to grow along the vegetated shelf and forebay berm
If the basin must be drained for an emergency or to perform maintenance, the flushing of sediment through
the emergency dram shall be minimized to the maximum extent practical
Form SWU-102 Rev 3 99 Page 3 of 4
7 All components of the wet detention basin system shall be maintained in good working order
I acknowledge and agree by my signature below that 1 am responsible for the performance of the seven
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
Title Sc(
Address
Sheldon Tucker
131 Ocean Blvd West Holden Beach, NC 28462
Phone 910-61
Signature ZVZ44/ l�
Date V 2 J6 7—
Note I he 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 �,ti1CM y ,T; ,Cy�P?40 ,a Notary Public for the State of zyt9A- 72/ Cgotp��
County of e/�.I/ /.//WoVG�_ ,do hereby certify that �l��yQ TUC1Lt72,
personally appeared before me this a/"1'/ day of vc)7 and acknowledge the due
execution of the for ing , detention basin maintenance requirements Witness my hand and official seal
J
Az �,OTAR) �a
pUBL\G _ z
SEAL
My commission expires bGZrool— 02�7
Form SWU-102 Rev 3 99 Page 4 of 4
State Stormwater Management Systems
Permit No SW8 060338M0D
Ocean Isle Palms Phase 1 Page 1 of 2
Stormwater Permit No SW8 060338M0D
Brunswick Countv
Designer's Certification
Pe-AP-y DAVIS as a duly registered PPrr-5s1DJd( apiarg- in
the State of North Carolina, having been authorized to observe (periodically/weekly/full
time) the construction of the project,
OCZF /•.) ISLE PALMS PAASE I - POrJb I J
(Project)
F P, VT IA(,
I FI Cp I It 1
for Ou--Atj ISCt PPLMSI L L C. (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 a part of this Certification
Noted deviations from approved plans and specifications
Signs
Regi:
Date
SEAL
MAY 1 2 2�09 1
Page 8 of 9
V,
State Stormwater Management Systems
Permit No SW8 060338MOD
Certification Requirements P�N� �� Page 2 of 2
J
1
The drainage area to the system contains approximately the permitted
SFE
acreage
,Ar1A`N(D2
The drainage area to the system contains no more than the permitted
SEc
amount of built -upon area
A7TAMM 3
All the built -upon area associated with the project is graded such that the
sCt
runoff drains to the system
ATTuH� 4
All roof drains are located such that the runoff is directed into the system
5
The outlet/bypass structure elevations are per the approved plan
6
The outlet structure is located per the approved plans
SEE
AT[4(P,z7
Trash rack is provided on the outlet/bypass structure
8
All slopes are grassed with permanent vegetation
`f 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
ANA4W
The permitted amounts of surface area and/or volume have been
provided
✓ 12 Required drawdown devices are correctly sized per the approved plans
sEE
JTAgt 13 All required design depths are provided
A7*4014 All required parts of the system are provided, such as a vegetated shelf, a
9E6- forebay, and the vegetated filter
A15 pan required dimensions of the system are provided, per the approved
cc NCDENR-DWQ Regional Office
Brunswick County Building Inspections
MAY 1 2 2009
Page 9 of 9
OCEAN ISLE PALMS
PHASE I
5TORMWATER POND PARTIAL CERTIFICATION — POND # 14
L15T OF CLARIFICATIONS
The item numbers below correspond with those on the Pond Certification
checklist
2 Thi5 15 a partial certification To date, BUA within the Pond # 14 dramage
area con515t5 of a few spec houses and the guard booth The roads have
not been paved No other BUA has been constructed to date
3 With the exception of a few spec houses, no other structures have been
constructed to date It 15 the intent of the project to grade finished
centerline profiles at least eighteen inches below existing grade to
facilitate the collection of 5tormwater runoff from all proposed lot5 Upon
final Site Stabilization, all roof drains will be located such that runoff 15
directed to the system
4 See item 3, above
7 The outlet structure con515t5 of an orifice pipe through the berm and an
emergency Spillway Per the design, the orifice has been angled downward
from the normal pool to help prevent clogging Trash racks have been
ordered for the 3-6 inch outlet pipes and will be m5talled per the
approved plan
I I The pond 15 currently acting a5 a temporary 5echment ba51n during
con5tructlon The general shape of the pond has been constructed Upon
final Site Stabilization, the any accumulated Sediments will be removed from
the pond to the required design volume
13 The pond 15 currently acting a5 a temporary Sediment ba51n Upon final Site
stabilization, all accumulated 5ediment5 will be removed from the pond and
design depths will be restored
14 Th15 pond has been dC51cjned for 90% T55 removal A vegetated filter 15
not required Vegetation has been e5tabll5hed on the shelf Subsequent to
its use a5 a Sediment basin and removal of accumulated 5edlment5, the
forebay5 will be reshaped to reflect design grades
15 See 1 1 , above
MAY 1 2 2009
P\809\809-02�Admin\5TOPMWTP\Certi ication5Yist of clanfication5 - Pond 14 doc
State Stormwater Management Systems
Permit No SW8 060338MOD
Ocean Isle Palms Phase 1
Stormwater Permit No SW8 060338MOD
Brunswick County
Designer's Certification
Page 1 of 2
I, �ERfZ� PAJIS as a duly registered P1Z°FESSGaN4L tN4/NEER in
the State of North Carolina, having been authorized to obsery ep r- eekly/full
time) the construction of the protect,
— fo.p 12. (PAR�(IAC, GGj IF/(.ATo/J>
o GEAQ / s to -
(Project)
PALMS PPASC
for Oc5w W-6 PALAS3 44C- (Protect Owner) hereby state that, to the
best of my abilities, due care and diligence was used in the observation of the protect
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 a part of this Certification
Noted deviations from approved plans and specifications
5C'L A-T Acti" (,IS' of CJ.AP1r-/CATJ0 J5
Signs
Regis
Date
SEAL
MAY 1 2 2009
Paae 8 of 9
State Stormwater Management Systems
Permit No SW8 060338MOD
Certification Requirements P O q f Z Page 2 of 2
1
The drainage area to the system contains approximately the permitted
acreage
aTiI�.UeD 2
The drainage area to the system contains no more than the permitted
SEE
amount of built -upon area
ATT�IIIED 3
All the built -upon area associated with the protect is graded such that the
runoff drains to the system
s Fr
PTTmkG4
All roof drains are located such that the runoff is directed into the system
s&Z
kTLAwm5
The outlet/bypass structure elevations are per the approved plan
SEE
AM�LO 6
The outlet structure is located per the approved plans
7
Trash rack is provided on the outlet/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-
J G G'
circuiting of the system
AM40I 1
The permitted amounts of surface area and/or volume have been
provided
Sfi E
Aj7Aco 12
Required drawdown devices are correctly sized per the approved plans
SEC
Ar7WRl3
All required design depths are provided
er
5A7*46)14
All required parts of the system are provided, such as a vegetated shelf, a
SEE
forebay, and the vegetated filter
ArTA(40 15
The required dimensions of the system are provided, per the approved
plan
cc NCDENR-DWQ Regional Office
Brunswick County Budding Inspections
MAY 1 2 2009 ' I'
I
Page 9 of 9
OCEAN 15LE PALMS
FHA5E I
5TORMWATER POND PARTIAL CERTIFICATION — POND # 12
L15T OF CLARIFICATIONS
The Item numbers below correspond with those on the Pond Certification
checklist
2 This is a partial certification To date the roads have not been paved
3 No structures, other than the canoe and kayak club have been constructed
to date It is the Intent of the project to grade finished centerline profiles
at least eighteen Inches below existing grade to facilitate the collection of
stormwater runoff from all proposed lots Upon final site stabllizatlon, all
roof drains will be located such that runoff 15 directed to the system
4 See Item 3, above
5 The pond, as currently configured, is acting as a temporary sediment basin
during construction The primary orifice/outlet structure has not been
Installed However, the secondary outlet/emergency bypass structure 15 in
place The secondary outlet is connected to a pipe network that eventually
discharges to the forebay in Pond 14 The total BUA in place is
significantly less than the permitted BUA for Pond 14 Once the permit
modification for POND 21 15 secured and prior to paving, contractor will
be completing POND 12 and constructing POND 2 1
6 As noted in item 5, above the primary outlet structure has not been
installed at this time The secondary outlet structure has been installed
per the plans
7 A trash rack for the secondary outlet/emergency bypass has been ordered
and will be Installed per the approved plans
I I The general shape of the pond has been constructed The shape of the
pond will be fine-tuned subsequent to Its use as a sediment basin
12 The drawdown device will be Installed with the primary outlet structure
13 The pond is currently acting as a temporary sediment basin Upon final site
stabilization, all accumulated sediments will be removed from the pond and
design depths will be restored
14 This pond has been designed for 90% T55 removal A vegetated filter 15
not required 5ub5equent to its use as a sediment basin and removal of
accumulated sediments, the forebays and shelf will be shaped to reflect
design grades
15 See 1 1 , above
MAY � 1 2oDGp' ��
P \509\609 02Wdmin\5TORMWTR\Certification5\list of clanfications Pond 12 doc
TRANSMISSION VERIFICATION REPORT
TIME 05/22/2009 12 28
NAME NCDENR
FAX 9103502018
TEL 9107967215
DATE,TIME
05/22 12 25
FAX NO /NAME
93831045
DURATION
03 02
PAGE(S)
100
RESULT
OK
MODE
STANDARD
ECM
State of North Carolina
Department of Environment and Natural Resources
Wilmington Regional Office Dee Freeman, Secretary
Beverly Eaves Perdue, Governor FAX COVER SHEET
Date `
To
Co C— Q l is 2Lr C rr C
Fax
Re
Hard cony to follow
No Pages (e col cover) 1
Express Permitting
From Sandra Exum
Phone (21n 71 96.7261
Fax (9101350-2004
4
An Equal Opporiufuty Affirmative Acton Employer
127 Cardinal Dnve Extensinn, W+lmmgton, NC 28405 • (910) 796.721 s •
ary
Sent
To
Cc
Subject
Attachments
Tom Purvis [tom purvis@capefearengineering com]
Thursday, May 21, 2009 11 27 AM
Naugle, Mary
Noelle Winstead
RE SW8 060338 mod Ocean Isle Palms Ph 1 ad info request COMPLETED
Form_SWManagementApplication_Rev3_ page 2-5-21-09 pdf, list of clarifications - Pond
12-5-21-09 pdf
Mary Jean,
Attached please find pdf copies of the requested documents
Thank you
From Naugle, Mary [mailto mary naugle@ncdenr gov]
Sent Thursday, May 21, 2009 10 49 AM
To Tom Purvis
Cc Noelle Winstead
Subject RE SW8 060338 mod Ocean Isle Palms Ph 1 ad info request COMPLETED
TOM,
THANK YOU FOR YOUR REPLY
PLEASE NOTE A COUPLE OF REQUESTS "IN CAPS" ON ITEMS 1 AND 4 BELOW TO DOCUMENT YOUR REPLY ON THE
CORRESPONDING DOCUMENTATION IN THE APPLICATION/PERMIT
THANKYOU
Mary Jean Naugle
NC DENR Express Permitting
910-796-7303
910-350-2004 fax
Please note E-mail correspondence to and from this address may be subject to the North Carolina Public Records
Law and may be disclosed to third parties
From Tom Purvis [mailto tom purvis@capefearengineering com]
Sent Thursday, May 21, 2009 10 38 AM
To Naugle, Mary
Cc Noelle Winstead
Subject FW SW8 060338 mod Ocean Isle Palms Ph 1 ad info request
Mary Jean,
Please see below Should you require additional information or have any further questions please email or give us a call
Since Noelle is out this week, please cc me on all correspondence so that we can ensure a timely response
Best regards,
Tom Purvis, P E
CAPE FEAR Engineering, INC
tom Purvis cDcapefearenoineering com
910 383 1044 ext 167
VFNaugle, Mary [mailto mary naugle@ncdenr gov]
dnesday, May 20, 2009 3 23 PM
To Noelle Winstead
Cc Naugle, Mary
SubJect SW8 060338 mod Ocean Isle Palms Ph 1 ad info request
Noelle,
Please provide the following additional information
Please verify the bua and drainage area values for pond #12 The top section III (8) of the application on page 2
reports total drainage area of 1,081,159 sf with no off -site drainage area in that top section The bottom section
of the same table reports 26,877 sf of off -site bua If there is off -site bua, then there should be off -site drainage
area that corresponds in the top section of the table Please correct to provide consistent values This is
reported as "off -site" on the application It should have been reported as "On -site RESERVE (future)" It is the
difference between the permitted 443,877 sf (73 98 lots) and the 417,000 sf (69 5 lots) which we've counted
and verified Can you cross out and re -write or do we need to provide a new page?
PLEASE E-MAIL OR FAX A NEW PAGE THANK YOU MJ
2 Please verify that the drainage area on pond #21 went from 921,730 sf (originally permitted) to 1,093,685 sf (our
revised number)and that the bua changed from 483,992sf to 561,672 sf That is correct —The addition of seven
lots adds 171,955 sf to the drainage area and total BUA is 561,672 sf
THANK YOU MJ
3 Please verify that the lots in each drainage area went to pond #12 with 69 5 lots confirmed, pond #14 with 125
lots confirmed, and pond #21 with 43 5 lots confirmed
THANK YOU MJ
4 Regarding the partial PE certification for pond #12 if the primary outlet structure is not installed and bua is
built for the club and road, please demonstrate how the intent of the stormwater system is met If there is bua
installed, then the draw down device should also be installed, but the PE certification states it is not Is a
skimmer installed to suffice throughout construction ? If so, please note on the PE certification notes As noted
in the LIST OF CLARIFICATIONS attached to the POND 12 PARTIAL CERTIFICATION, the pond is acting as a
temporary sediment basin with only the secondary outlet installed The secondary outlet is connected to a pipe
network that eventually discharges to the forebav in Pond 14 The total BUA in place is significantly less than the
permitted BUA for Pond 14 Once the modification is secured and prior to paving, contractor will be completing
POND 12 and constructing POND 21
PLEASE ADD THIS CLARIFICATION NOTE ON THE PE CLARIFICATION PAGE AND E-MAIL OR FAX IT TOME THANK
YOU MJ
5 Please verify that the original supplement for pond #12 is still good You submitted revised supplements for
pond # 14 and 21, but I wanted to verify regarding #12 1 will reissue #12 from the previous permit if there are
no changes That is correct— no changes
THANK YOU MJ
Thankyou
Mary Jean
ggan
CAPE FEAR
' o
Englneeriling, Inc.
151 Poole Road Sw1e 100
ReN fa NC M51
TEL (910) 383 1044
FAR (810) 383 1045
www capefearengmeermg com
To
NC DWQ Surface Water Protection
State Stormwater Section
127 Cardinal Drive Ext
Wilmington, NC 28405
Attu
Mary Jean Naugle
❑ As Requested ❑ For Your Files
❑ Sent via Mail ❑ Sent via Courier
C
MAY 1 3 2009
BY
Transmittal
"High Density w/Detention Pond" State
Stormwater Management Permit
Submittal
❑ For Distribution ® For your Review / Action / Approval
Quantity
Drawing No
Description
1
Check #
$4000 00 Application Fee
3
Sets Sealed, Signed, and Dated Site Layout & Grading Plans
3
Drainage Area Plans
1
Original Application SWU-101 w/ Wet Detention Pond Supplement SWU-102
1
Original Proposed Deed Restriction Statement and Deed Restrictions
1
Copy Applicant Information from Secretary of State Corporations Database
1
Sealed, Signed, and Dated Calculations and Narrative
1
SHWT Soil Report
1
PUD Approval and Maps (vested rights)
1
Copy Wetland Delineation Survey and JD
REMARKS
CC File Copy 809-02 '36"
Cape Fear Engineering, Inc
Signed
Received By
Date
Transmittal-MJ-Express 050409
L \Admin\PERMIT Forms\CHECKLISTS & TRANSMITTALS
ceq,> E Filed Annual Report
=BY
-1-0-8704679
I LIMITED LIABILITY COMPANYFor year2009
ANNUAL REPORT Do not data enter manually
NAME OF LIMITED LIABILITY COMPANY Ocean Isle Palms LLC
STATE OF INCORPORATION NC
SECRETARY OF STATE L L C ID NUMBER 0817314
NATURE OF BUSINESS Real Estate
REGISTERED AGENT Saunders MarkA
REGISTERED OFFICE MAILING ADDRESS 131 Ocean Blvd West
Holden Beach NC 28462
REGISTERED OFFICE STREET ADDRESS 131 Ocean Blvd West
Holden Beach NC 28462 Brunswick Canty
PRINCIPAL OFFICE TELEPHONE NUMBER (910) 842-4939
PRINCIPAL OFFICE MAILING ADDRESS 131 Ocean Blvd [Vest
Holden Beach, NC 28462
PRINCIPAL OFFICE STREET ADDRESS 131 Ocean Blvd West
Holden Beach NC 28462
MANAGERS/MEMBERS/ORGANIZERS
Name MarkA Saunders
Title Manager
Address
131 Ocean Blvd W
Holden Beach NC 28462
Name Donald Howarth
Title Manager
Address
131 Ocean Blvd IV
Holden Beach NC 28462
Name Carroll M Lipscombe
Title Manager
Address
131 Ocean Blvd W
Holden Beach NC 28462
Name Sheldon Tucker
Title Manager
Address
131 Ocean Blvd IV —
Holden Beach NC 28462
CERTIFICATION OF ANNUAL REPORT MUST BE COMPLETED BY ALL LIMITED LIABILITY COMPANIES
Mark Saunders
FORM MUST BE SIGNED BY A MANAGER/MEMBER
Mark Saunders
04/15/2009
DATE
Manager
TYPE OR PRINT NAME TYPE OR PRINT TITLE
ANNUAL REPORT FEE $200 MAIL TO Secretaryof State Corporations Division Post Office Box 29525 Raleigh, NC 27626-0525
�Hydraflow Table of Contents MAY 1 8 2009POND21042009 gpw
Hydraflow Hydrographs Extension for AutoCADO Civil 3D0 2009 by Autodesk Inc v6 066 Sunday May 3 2009
Hydrograph Return Period Recap 1
1 -Year
Summary Report
2
Hydrograph Reports
3
Hydrograph No 1, SCS Runoff, PRE DEVELOPMENT POND 21
3
TR-55 Tc Worksheet
4
Hydrograph No 3, SCS Runoff, Post-Dev Amenity Pond
5
TR-55 Tc Worksheet
6
Hydrograph No 4, SCS Runoff, POST DEVELOPMENT POND 21
7
TR-55 Tc Worksheet
8
Hydrograph No 6, Reservoir, Amenity Pond -Routed
9
Pond Report - Amenity Pond
10
Hydrograph No 7, Combine, Combined Developed
11
Hydrograph No 9, Reservoir, Pond 21-Routed
12
Pond Report - POND 21-FOREBAY
13
Pond Report - POND 21-MAIN POOL
14
10 -Year
Summary Report 15
Hydrograph Reports 16
Hydrograph No 1, SCS Runoff, PRE DEVELOPMENT POND 21 16
Hydrograph No 3, SCS Runoff, Post-Dev Amenity Pond 17
Hydrograph No 4, SCS Runoff, POST DEVELOPMENT POND 21 18
Hydrograph No 6, Reservoir, Amenity Pond -Routed 19
Hydrograph No 7, Combine, Combined Developed 20
Hydrograph No 9, Reservoir, Pond 21-Routed 21
100 - Year
Summary Report 22
Hydrograph Reports 23
Hydrograph No 1, SCS Runoff, PRE DEVELOPMENT POND 21 23
Hydrograph No 3, SCS Runoff, Post-Dev Amenity Pond 24
Hydrograph No 4, SCS Runoff, POST DEVELOPMENT POND 21 25
Hydrograph No 6, Reservoir, Amenity Pond -Routed 26
Hydrograph No 7, Combine, Combined Developed 27
Hydrograph No 9, Reservoir, Pond 21-Routed 28
RECEIVED
MAY 1 3 2009
Hydrograph Return Period g���� y ra ow y graphs E#ensw Bl,�Gt y Autodesk Inc v6 066
Hyd
Hydrograph
Inflow
Peak Outflow (cfs)
Hydrograph
No
type
Hyd(s)
description
(origin)
1 Yr
2 Yr
3 Yr
5-Yr
10 Yr
25 Yr
50-Yr
100 Yr
1
SCS Runoff
-
1752
- -
— -
— -
51 92
— - -
- -
85 52
PRE DEVELOPMENT POND 21
3
SCS Runoff
— —
7 555
- -
- -
— -
1735
—
2622
Post Dev Amenity Pond
4
SCS Runoff
-
3502
- —
- -
— -
7745
- - -
—
11558
POST DEVELOPMENT POND 21
6
Reservoir
3
1 027
- -
- —
-
1 894
-
-
2 435
Amenity Pond Routed
7
Combine
4 6
3561
- -
- -
- -
7890
-
-
11748
Combined Developed
9
Reservoir(i)
7
3 561
— -
- -
- -
48 76
--
— -
9894
Pond 21 Routed
Proj file POND21-04-20-09 gpw
Sunday May 3 2009
F7,
2
Hydrograph Summary Re�grt AY 1 s2009
y raflow Hydrographs ExtensionCAD® Civil 3D® 2009 b Autodesk Inc v6 066
Hyd
No
Hydrograph
type
(origin)
Peak
flow
(cfs)
Time
interval
(min)
Time to
peak
(min)
Hyd
volume
(cult)
Inflow
hyd(s)
Maximum
elevation
(ft)
Total
strge used
(cuft)
Hydrograph
description
1
SCS Runoff
1752
1
761
132 213
—
--
— —
PRE DEVELOPMENT POND 21
3
SCS Runoff
7 555
1
737
36 522
-
Post Dev Amenity Pond
4
SCS Runoff
3502
1
740
183 961
-
-
POST DEVELOPMENT POND 21
6
Reservoir
1 027
1
801
34 662
3
20 78
19 663
Amenity Pond Routed
7
Combine
3561
1
740
218 624
4 6
-
-
Combined Developed
9
Reservoir(i)
3 561
1
955
90 651
7
843
160 841
Pond 21 Routed
POND21-04-20-09 gpw
Return Period 1 Year
Sunday May 3, 2009
_ Hydrograph
Report
Hydraflow Hydrographs Extension for AutoCAD® Civil 3130 2009 by Autodesk Inc v6 066
Hyd No 1
PRE DEVELOPMENT POND 21
Hydrograph type
= SCS Runoff
Storm frequency
= 1 yrs
Time interval
= 1 min
Drainage area
= 25 110 ac
Basin Slope
= 1 3 %
Tc method
= TR55
Total precip
= 3 70 in
Storm duration
= 24 hrs
MAY 1 3 2009
3
May 3 2009
Peak discharge = 17 52 cfs
Time to peak =
761 min
Hyd volume =
132,213 cuft
Curve number =
75'
Hydraulic length =
2280 ft
Time of conc (Tc) =
56 00 min
Distribution =
Type III
Shape factor =
484
Composite (Area/CN) = ((2 690 x 74) + (7 480 x 70) + (3 830 x 80) + (11 110 x 77)) / 25 110
Q (cfs)
1800
1500
1200
• m
. e,
300
PRE DEVELOPMENT POND 21
Hyd No 1 -- 1 Year
000 1 1
0 120 240 360 480 600
Hyd No 1
Q (cfs)
1800
1500
1200
. We
300
' ' ' ' ' ' i �] 000
720 840 960 1080 1200 1320 1440 1560
Time (min)
_ TR55 Tc Worksheet I� MAY 1 3 2009 I 4
Hydraflow Hydrographs Extension for
Hyd No 1
PRE DEVELOPMENT POND 21
Description
A
B
C
Totals
Sheet Flow
Manning's n-value
= 0 400
0 011
0 011
Flow length (ft)
= 1000
00
00
Two-year 24-hr preclp (In)
= 450
000
000
Land slope (%)
= 050
000
000
Travel Time (min)
= 31 53 +
000 +
000 =
31 53
Shallow Concentrated Flow
Flow length (ft)
= 213000
000
000
Watercourse slope (%)
= 081
000
000
Surface description
= Unpaved
Paved
Paved
Average velocity (ft/s)
= 1 45
000
000
Travel Time (min)
= 2445 +
000 +
000 =
2445
Channel Flow
X sectional flow area (sqft)
= 000
000
000
Wetted perimeter (ft)
= 000
000
000
Channel slope (%)
= 000
000
000
Manning's n-value
= 0 015
0 015
0 015
Velocity (ft/s)
= 000
000
000
Flow length (ft)
= 00
00
00
Travel Time (min)
= 000 +
000 +
000 =
000
Total Travel Time, Tc
56 00 min
Inc v6 066
Hydrograph Report MAY 1 3 2009
Hydrallow Hydrographs Extension for AutoCAD® Civil 3170 2009 by Autodesk Inc v6 066
Hyd No 3
Post-Dev Amenity Pond
Hydrograph type
= SCS Runoff
Storm frequency
= 1 yrs
Time interval
= 1 min
Drainage area
= 4 420 ac
Basin Slope
= 0 0 %
Tc method
= TR55
Total precip
= 3 70 in
Storm duration
= 24 hrs
Composite (Area/CN) = [(1 850 x 98) + (1 040 x 74) + (1 530 x 80)] / 4 420
Q (cfs)
800
. M
01
0 00
0 120 240
Hyd No 3
Post-Dev Amenity Pond
Hyd No 3 -- 1 Year
360 480 600 720
May 3 2009
Peak discharge = 7 555 cfs
Time to peak =
737 min
Hyd volume =
36,522 cuft
Curve number =
86*
Hydraulic length =
0 ft
Time of conc (Tc) =
23 90 min
Distribution =
Type III
Shape factor =
484
Q (cfs)
800
. rr
400
200
000
840 960 1080 1200 1320 1440 1560
Time (min)
0
TR55 Tc Worksheet
Hydraflow Hydrographs Extension for
Hyd No 3
Post-Dev Amenity Pond
MAY 1 3 2009
10 Civil 31D® 2009 by
Description
A
B
C
Totals
Sheet Flow
Manning's n-value
= 0 400
0 011
0 011
Flow length (ft)
= 1000
00
00
Two-year 24-hr precip (in)
= 450
000
000
Land slope (%)
= 1 00
000
000
Travel Time (min)
= 2389
+ 000 +
000 =
2389
Shallow Concentrated Flow
Flow length (ft)
= 000
000
000
Watercourse slope (%)
= 000
000
000
Surface description
= Paved
Paved
Paved
Average velocity (ft/s)
= 000
000
000
Travel Time (min)
= 000
+ 000 +
000 =
000
Channel Flow
X sectional flow area (sqft)
= 000
000
000
Wetted perimeter (ft)
= 000
000
000
Channel slope (%)
= 000
000
000
Manning's n-value
= 0 015
0 015
0 015
Velocity (ft/s)
= 000
000
000
Flow length (ft)
= 00
00
00
Travel Time (min)
= 000
+ 000 +
000 =
000
Total Travel Time, Tc
23 90 min
Inc v6 066
Hydrograph
Report I
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2009 by Autodesk Inc v6 066
Hyd No 4
POST DEVELOPMENT POND 21
Hydrograph type
= SCS Runoff
Storm frequency
= 1 yrs
Time interval
= 1 min
Drainage area
= 20 670 ac
Basin Slope
= 1 0 %
Tc method
= TR55
Total precip
= 3 70 in
Storm duration
= 24 hrs
Composite (Area/CN) = [(11 040 x 98) + (3 900 x 74) + (5 730 x 80)] / 20 670
Q (Cfs)
4000
3000
2000
1000
0 00
0 120 240
Hyd No 4
MAY 1 3 2009
7
May 3 2009
Peak discharge = 35 02 cfs
Time to peak =
740 min
Hyd volume =
183,961 cuft
Curve number =
88*
Hydraulic length =
2245 ft
Time of conc (Tc) =
29 30 min
Distribution =
Type III
Shape factor =
484
POST DEVELOPMENT POND 21
Hyd No 4 --1 Year
360 480 600 720 840
Q (Cfs)
4000
3000
2000
1000
960 1080 1200 1320 1440 1560
Time (min)
TR55 Tc Worksheet I MAY 1 3 2009 I 8
Hydraflow Hydrographs Extension for
Hyd No 4
POST DEVELOPMENT POND 21
Description
A
Sheet Flow
Manning's n-value
= 0 410
Flow length (ft)
= 1000
Two-year 24-hr preclp (In)
= 450
Land slope (%)
= 1 00
Travel Time (min)
= 2437
Shallow Concentrated Flow
Flow length (ft)
= 24000
Watercourse slope (%)
= 200
Surface description
= Paved
Average velocity (ft/s)
= 287
Travel Time (min)
= 1 39
Channel Flow
X sectional flow area (sgft)
= 353
Wetted perimeter (ft)
= 471
Channel slope (%)
= 080
Manning's n-value
= 0 013
Velocity (ft/s)
= 845
Flow length (ft)
= 18130
Travel Time (min)
= 358
Total Travel Time, Tc
Autodesk Inc v6 066
B
C
Totals
0 011
0 011
00
00
000
000
000
000
+ 000 +
000 =
2437
000
000
000
000
Paved
Paved
000
000
+ 000 +
000 =
1 39
000
000
000
000
000
000
0 015
0 015
000
000
00
00
+ 000 +
000 =
3 58
29 30 min
Hydrograph Report
Hydraflow Hydrographs Extension for AutoCADP Civil 3D9 2009 by Autodesk.
Inc v6 066 lb �=_--- —
Sunday. May 3, 2009
Hyd. No. 6
Amenity Pond -Routed
Hydrograph type = Reservoir
Peak discharge
= 1.027 cfs
Storm frequency = 1 yrs
Time to peak
= 801 min
Time interval = 1 min
Hyd. volume
= 34,662 cult
Inflow hyd. No. = 3 - Post-Dev Amenity Pond
Max. Elevation
= 2078 ft
Reservoir name = Amenity Pond
Max. Storage
= 19,663 cuft
Storage Indication method usec
Q (cfs
800
6 00
m
200
rrra
Amenity Pond -Routed
Hyd. No 6 -- 1 Year
i
I
I
� I
i
j I I i
I
0 300 600 900 1200 1500 1800 2100 2400 2700
— Hyd No 6 Hyd No 3 Total storage used = 19,663 cuft
Q (cfs)
800
we]
400
200
3000
Time (min,
10
Hydraflow Hydrographs Extension
for AutoCACC-) Civil 3Dai 2009 by Autodesk, Inc v6 066
-_. Sunday, May 3. 2009
Pond No.
3 - Amenity Pond
-
Pond Data
Contours - User
-defined contour areas.
Average end
area method used for volume calculation
Begining Elevation
=
2000 ft
Stage I Storage Table
Stage (ft)
Elevation (ft)
Contour area (sqft)
Incr. Storage (tuft)
Total storage (tuft)
0.00
20 00
23,266
0
0
100
2100
27,055
25,161
25,161
200
2200.
30,360
28.708
53.868
300
23.00
33,709
32,035
85,903
4.00
24.00
37,123
35.416
121.319
5.00
25.00
40,623
38,873
160.192
Culvert I Orifice Structures
Weir Structures
[A]
[B]
[C]
[PrfRsr]
[A] [B]
[C]
[D]
Rise (in)
= 24 00
8.00
0.00
0.00
Crest Len (ft)
= 1600 0.00
0.00
0.0c
Span (in)
= 24.00
800
0.00
000
Crest El. (ft)
= 24.00 000
000
000
No. Barrels
= 1
1
0
0
Weir Coeff.
= 3.33 3.33
3.33
3.33
Invert El. (ft)
= 2000
2000.
000
000
Weir Type
= Riser
Length (ft)
= 190.00
0.00
0.00
000
Multi -Stage
= Yes No
No
No
Slope (%)
= 0.30
0.00
0.00
n/a
N-Value
= 013
013
013
n/a
Orifice Coeff.
= 060
060
0 60
0.60
Exfii.(in/hr)
= 0 000 by Wet area)
Multi -Stage
= n/a
Yes
No
No
TW Elev. (ft)
= 000
No.e "'I „/Jrf,a'�u f.i sa .anxly 1i..a
Stage / Storage /
Discharge Table
Stage
Storage
Elevation CIv A
Clv B Civ C
PrfRsr Wr A Wr B
Wr C Wr 0 Exfil User Tota
ft
tuft
ft cfs
cfs cfs
cfs cfs cfs
cfs cfs cfs cfs cfs
0.00
0
2000 0 00
000 ---
--- 000 -----
--- -- --- 0.00(
1.00
25,161
21.00 1.26 is
1.25 is ---
--- 0.00 ---
-- --- --- --- 1.24f
2.00
53,868
22. 00 2.00 oc
2.00 is -
--- 0.00 ---
--- --- --- --- 2.00(
3.00
85,903
23.00 2 65 oc
2.56 is ---
--- 000 ---
--- --- --- --- 2. 56:
400
121,319
24.00 3.06 oc
3.04 is ---
--- 0.00 ---
--- --- --- --- 3.03E
5.00
160. 192
25 00 24.02 oc
0.48 is --
--- 23 53 s ---
--- --- -- --- 2401
Hydraflow Hydrographs Extension for AUroCAD,� Civil 3D:PJ 2009 ny Autodesk, Inc v,6066
Hyd. No. 7
Combined Developed
Hydrograph type = Combine
Storm frequency = 1 yrs
Time interval = 1 min
Inflow hyds. = 4, 6
Combined Developed
11
Sunday.. May 3, 2009
Peak discharge = 35.61 cfs
Time to peak = 740 min
Hyd. volume = 218,624 cuft
Contrib. drain. area= 20.670 ac
Q (cfs) Q (cfs)
Hyd No 7 -- 1 Year
4000 4000
� I
j
I
3000 30 00
I
2000 2000
I I I l
1000
10.00
0 00 0,00
0 120 240 360 480 600 720 840 960 1080 1200 1320 1440 1560
Time (min)
— Hyd No 7 Hyd No 4 — Hyd No 6
Hydrograph Report
Hydraflow Hydrographs Extension for AutoCADO Civil 3DkP 2009 by Autodesk, Inc. v6 066
Hyd. No. 9
Pond 21-Routed
Hydrograph type
= Reservoir (Interconnected)
Storm frequency
= 1 yrs
Time interval
= 1 min
Upper Pond
Pond name
= POND 21-FOREBAY
Inflow hyd.
= 7 - Combined Developed
Max. Elevation
= 8.43 ft
Max. Storage
= 56,452 cult
Interconnected Pond Routing. Storage Indication method used
Q (cfs)
40.00
3000
2000
10.00
0,00
0 300 60
Hyd No 9
Outflow Pond 5
Pond 21-Routed
Hyd No 9 -- 1 Year
12
Sunday. May 3. 2009
Peak discharge
= 3.561 cfs
Time to peak
= 955 min
Hyd. volume
= 90,651 cult
LowerPond
Pond name
= POND 21-MAIN PO(
Other Inflow hyd.
= None
Max. Elevation
= 8.16 ft
Max. Storage
= 104,388 cult
900 1200 1500 1800 2100 2400 2700
— Hyd No, 7 Total ,forage used = 160,841 tuft
Q (cfs)
40.00
30 00
20 00
1000
— 000
3000
Time (min)
Pond Report i 13
Hydraflow Hydrographs Extension for AutoCAD@ Civil 31DO 2009 by Autodesk. Inc. v6.066 1 { ., � Sunday, May 3, 2009
Pond No. 5 - POND 21-FOREBAY
Pond Data
Contours - User -defined contour areas. Average end area method used for volume calculation. Begining Elevation = 6.00 ft
Stage / Storage Table
Stage (ft)
Elevation (ft)
000
600
1.00
700
200
800
300
900
400
10 00
Contour area (sgft)
20,632
22,824
25 125
27,450
29 874
Incr. Storage (tuft)
0
21,728
23.975
25, 288
28,662
Total storage (cuff)
0
21, 728
45.703
71 990
100.652
Culvert / Orifice Structures
Weir Structures
[A]
[B] [C]
[PrfRsr]
[A]
[B]
[C]
[D]
Rise (in) = 36.00
000 0.00
0 00
Crest Len (ft)
Inactive
0.00
000
0.00
Span (in) = 36 00
0.00 0.00
0.00
Crest EL (ft)
= 8.50
0.00
000
0.00
No. Barrels = 4
0 0
0
Weir Coeff.
= 2.60
3.33
3 33
3 33
Invert El. (ft) = 6 13
0.00 0.00
000
Weir Type
= Broad
---
---
Length (ft) = 107 00
0.00 0 00
000
Multi -Stage
= No
No
No
No
Slope I%) = 0 10
0.00 000
nia
N-Value = 013
013 013
ale
Orifice Coeff. = 060
060 0.60
060
Exfil.(inihr)
= 0 000 (by
Wet areal
Multi -Stage = n/a
No No
No
TW Elev. (11
= 0 00
Nol
C.ivnnrtnrd
,j,
�nietp ) and 1u11.T I'
. V,nr .,t
„Meci,nC=h of
..e �o Jieans'e nw oub^erg5rre
e
Stage / Storage / Discharge Table
Stage Storage Elevation
Civ A
CIv B Clv C
PrfRsr Wr A
Wr B
Wr C
Wr D
Exfil User
Total
It cuff ft
cfs
cfs cfs
cfs cfs
cfs
cfs
cfs
cfs cis
cfs
0.00 0 Soo
0.00
--- --
-- DOD
--
---
---
--- ---
0 000
1.00 21.728 7.00
11.29 oc
--- ---
--- 000
---
---
---
--- ---
11 29
2.00 45.703 800
33.84 oc
--- ---
--- 000
---
---
---
--- ---
33.84
300 71, 990 900
49.98 oc
--- ---
--- 0.00
---
---
---
--- ---
49.98
4 00 100.652 10 00
151.14 oc
--- ---
--- 000
---
---
---
--- ---
151.14
Pond Report
1
14
Hydraflow Hydrographs Extension
for AutoCAD0 Civil 3DO) 2009 by
Autodesk, Inc v6 066 ; - -
Surgday, May 3.. 2009
Pond No. 7 - POND 21-MAIN POOL
Pond Data
Contours - User -defined contour
areas. Average end area method
used for volume calculation Begining Elevation
= 6 00 ft
Stage 1 Storage Table
Stage (ft) Elevation (ft)
Contour area (sqft) Incr. Storage (tuft)
Total storage (tuft)
000 6.00
41,911
0
0
1.00 7.00
48,917
45,414
45,414
2 DO 8 00
52.248
50,583
95.997
300 900
55,622
53,935
149,932
4.00 10.00
59, 039
57,331
207,262
Culvert/ Orifice Structures
Weir Structures
[A)
[B] [C] [PrfRsr]
[A] [131
[C] [D]
Rise (in) = 18.00
3.00 Inactive 0.00
Crest Len (ft)
= 16.00 5000
Inactive 0.00
Span (in) = 18 00
3 DO 24.00 0 00
Crest El. (ftl
= 800 850
900 000
No. Barrels = 1
1 2 0
Weir Coeff.
= 3.33 2 60
2.60 3 33
Invert El. (ft) = 6 00
6 10 700 0 00
Weir Type
= Riser Broad
Broad ---
Length (ft) = 52.00
000 000 0.00
Mufti -Stage
= Yes No
No No
Slope (%) = 0.02
0.00 000 nia
N-Value = 013
013 013 Na
Orifice Coeff. = 0.60
0.60 0.60 0.60
Exfll.(in/hr)
= 0 000 (by Wet area)
Mufti Stage = nla
Yes Yes No
TW Elev. (ft)
= 0.00
Stage / Storage / Discharge Table
Stage Storage Elevation
ON A Clv B ON C
PrfRsr Wr A
Wr B Wr C
Wr D Exfil User Total
ft tuft ft
cfs cfs cfs
cfs cfs
cfs cfs
cfs cfs cfs cfs
coo 0 6.00
0.00 0 00 0.00
--- 000
000 0.00
--- --- --- 0 000
1 00 45,414 700
0 19 oc 0 18 is 000
--- 000
000 000
--- --- --- 0 182
2 00 95, 997 800
0.29 oc 0.29 is 0.00
--- coo
0.00 0.00
--- --- --- 0.285
3.00 149.932 900
11.12 oc 0 03 is 0.00
--- 11.07
s 45 96 0.00
-- --- --- 57.06
4.00 207,262 10.00
14.38 oc 0.00 0.00
--- 0.00
238. 83 0.00
--- --- --- 253.21
Hydrograph Summary Re15
PQartw Hydrographs Extension for AutoCAIY! Civil 3DE 2009 by Autodesk Inc v6 066
Hyd.
No.
Hydrograph
type
(origin)
Peak Time
flow interval
(cfs) (min)
Time to Hyd.
peak j volume
(min) (tuft)
Inflow
hyd(s)
MaximuM'----�1`6ta� Hydrograph
elevation singe used description
(ft) (tuft)
1
SCS Runoff
51.92 1
758 379.608
------
---- ------ PRE DEVELOPMENT POND 21
3
SCS Runoff
'.� 1735 1
736 86,091
------
------ ------ Post-Dev Amenity Pond
4
SCS Runoff
7745 1
740 419,689
------
------ ------ POST DEVELOPMENT POND 21
6
Reservoir
1 894 1
819 83,838
3
2184 49 166 Amenity Pond -Routed
7
Combine
78 90 1
740 503,526
4, 6
------ ------ Combined Developed
9
i
Reservofr(i)
4876 1
i
763 372.060
7
'',. 9.27 226. D48 Pond 21-Routed
I
I
(
I
POND21-04-20-09 gpw Return Period 10 YearI Sunday. May 3. 2009
16
Hydrograph Report
Hydraflow Hydrographs Extension for AutoCAD(�) Civil 300 2009 by Autodesk. Inc v6.066
Sunday May 3 2009
Hyd. No. 1
PRE DEVELOPMENT POND 21
Hydrograph type
= SCS Runoff
Peak discharge
= 51.92 cfs
Storm frequency
= 10 yrs
Time to peak
= 758 min
Time interval
= 1 min
Hyd. volume
= 379,608 cuft
Drainage area
= 25.110 ac
Curve number
= 75`
Basin Slope
= 1.3 %
Hydraulic length
= 2280 ft
Tc method
= TR55
Time of conc. (Tc) = 56.00 min
Total precip.
= 7.00 in
Distribution
= Type III
Storm duration
= 24 hrs
Shape factor
= 484
Composite (AreaiCN) = ((2.690 x 74, + (7.480 x 70) + (3 830 x 80) + (11 110 x 77)] l25 110
Q (cfs)
6000
50 00
4000
3000
20.00
1000
0.00 -
PRE DEVELOPMENT POND 21
Hyd No 1 -- 10 Year
0 120 240 360 480 600 720 840
- Hyd No 1
Q (cfs)
6000
50,00
40.00
30.00
20.00
10.00
0.00
960 1080 1200 1320 1440 1560
Time (min)
Hydraflow Hyorographs Extension for AutoCAD� Civil 3DL 2009 by Autodesk. Inc v6 066
Hyd. No. 3
Post-Dev Amenity Pond
Hydrograph type
= SCS Runoff
Storm frequency
= 10 yrs
Time interval
= 1 min
Drainage area
= 4.420 ac
Basin Slope
= 0.0 %
Tc method
= TR55
Total precip.
= 7.00 in
Storm duration
= 24 hrs
Composite tArea;CN) = I(l 850 x 98) + (t 040 x 74) « (r 530 x 80j1 / 4.420
Post-Dev Amenity Pond
17
May 3, 2009
Peak discharge = 17.35 cfs
Time to peak =
736 min
Hyd. volume =
86,091 cuft
Curve number =
86`
Hydraulic length =
0 ft
Time of conc. (Tc) =
23.90 min
Distribution =
Type III
Shape factor =
484
Q (cfs) Q (cfs)
Hyd. No 3 -- 10 Year
1800 1800
i
i
1500 ! 1500
12.00 t 1200.
I
I �
9 00 MID
600 ( ! 600
3.00 300
j
MO j 000
0 120 240 360 480 600 720 840 960 1080 1200 1320 1440 1560
Time (min)
— Hyd No 3
18
Hydrograph Report
Hydraflow Hydrographs Extension for AutoCADn Gull 3DT) 2009 by Autodesk, Inc v6 066
Hyd. No. 4
Sunday, May 3, 2009
POST DEVELOPMENT POND 21
Hydrograph type = SCS Runoff
Peak discharge
= 77.45 cfs
Storm frequency = 10 yrs
Time to peak
= 740 min
Time interval = 1 min
Hyd. volume
= 419,689 cuft
Drainage area = 20.670 ac
Curve number
= 88`
Basin Slope = 1.0 %
Hydraulic length
= 2245 ft
Tc method = TR55
Time of conc. (Tc)
= 29.30 min
Total precip = 7.00 in
Distribution
= Type III
Storm duration = 24 hrs
Shape factor
= 484
' Composite (Area/CN) _ [(11.040 x 98) + (3.900 x 74) (5.730 x 80)i l 20 670
POST DEVELOPMENT POND 21
Q (cfs) Hyd No 4 — 10 Year
Q (cfs)
8000
80.00
7000
7000
i
60,00
60,00
5000
50,00
4000
40.00
'
3000
3000
20 00
i
2000
10 00
1000
I
0,00 -
000
0 120 240 360 480 600 720 840 960 1080 1200 1320
1440 1560
Time (min)
-�--� Hyd No 4
Hydrograph Report V-F_ ` 19
Hydraflow Hydrographs Extension for AutoCADE,, Civil 3D(P,' 2009 by Autodesk. Inc A 0t
Sunday. May 3. 2009
Hyd. No. 6
BI _—
Amenity Pond -Routed
Hydrograph type
= Reservoir
Peak discharge
= 1.894 cfs
Storm frequency
= 10 yrs
Time to peak
= 819 min
Time interval
= 1 min
Hyd. volume
= 83,838 cult
Inflow hyd. No
= 3 - Post-Dev Amenity Pond
Max. Elevation
= 21.84 ft
Reservoir name
= Amenity Pond
Max. Storage
= 49,166 cuft
Storage Indication method used
Amenity Pond -Routed
Q (cfs)
Hyd. No 6 -- 10 Year
18 00
I I �
1500
i
i
1200
9 00
3 00
I
0.00
Q (Cfs)
18.00
1500 1
1200 1
will]
WIrI11
0 300 600 900 1200 1500 1800 2100 2400 2700 3000
Time (min)
® Hyd No 6 Hyd No 3 Total storage used = 49.166 cult
Hydrograph Report
20
Hydraflow Hydrographs Extension for AutoCAD(+) C,I
3DS 2009 by Autodesk. Inc v6 066'ip ----
Sunday. May 3. 2009
Hyd. No. 7
Combined Developed
Hydrograph type = Combine
Peak discharge
= 78.90 cfs
Storm frequency = 10 yrs
Time to peak
= 740 min
Time interval = 1 min
Hyd. volume
= 503,526 cuft
Inflow hyds. = 4, 6
Contrib. drain. area= 20.670 ac
Combined Developed
Q Ids) Q (OS)Hyd No 7 -- 10 Year
8000 8000
70.00 I 7000
I i
I i
60.00 6000
i
50.00 5000
4000 4000
I I I
30.00 ( 3000
I i
I
20.00 2000
1000 10.00
0.00 000
0 120 240 360 480 600 720 840 960 1080 1200 1320 1440 1560
Hyd No. 7
- Hyd No. 4 Hyd No 6 Time (min)
21
Hydrograph Report
Hydraflow Hydrographs Extension for AutoCADFd Civil 312009 by Autodesk, Inc v6 066
Hyd. No. 9
Pond 21-Routed
Hydrograph type
= Reservoir (Interconnected)
Storm frequency
= 10 yrs
Time interval
= 1 min
Upper Pond
Pond name
= POND 21-FOREBAY
Inflow hyd.
= 7 - Combined Developed
Max. Elevation
= 9.27 ft
Max. Storage
= 79,446 cult
Interconnected Pond Routing. Storage Indication method used
Q (cfs)
8000
7000
5000
40 00
30,00
20,00
10.00
Pond 21-Routed
Hyd. No 9 -- 10 Year
--_ " Sunday.. May 3, 2009
Peak discharge = 48.76 cfs
Time to peak
= 763 min
Hyd. volume
= 372,060 cult
Lower Pond
Pond name
= POND 21-MAIN P0(
Other Inflow hyd.
= None
Max. Elevation
= 8.94 ft
Max. Storage
= 146,602 cult
MID
0 180 360 540 720 900 1080 1260 1440 1620
— Hyd No 9 - Hyd No. 7 Total Storage used = 226,048 tuft
----- Outflow Pond 5
Q (cfs)
8000
7000
50 00
4000
3000
2000
1000
_-L 0 00
1800
Time (min)
�,.� -fr �
Hydrograph Summary Re Rydra�flow Hydrographs Extension r AutoCADkU C,Vd 3De 2009 by Autodesk
PRE
Inc v6 066
Hyd
No.
Hydrograph
type
(origin)
Peak
flow
(cfs)
ITime
interval
(min)
I
Time to
peak
(min)
'�,.. Hyd.
I,.I volume
(cuft)
' Inflow Maximum Total
hyd(s) elevation mrge used
(ft) (cuft)
Hydrograph
description
1
SCS Runoff
85 52
1
757
629, 156
------ ------ -----
PRE DEVELOPMENT POND 21
3
SCS Runoff
2622
1
736
132865
------ ------ ------
1 Post-Dev Amenity Pond
4
SCS Runoff
115 58
1
739
I
640.121
-----------------
POST DEVELOPMENT POND 21
6
Reservoir
2.435
1
839
130.228
3 2275 78.053
Amenity Pond -Routed
7
Combine
117.48
1
739
770,349
4, 6 ----- -----
Combined Developed
9
Reservoir(i)
98.94
Ili
I
1
I
i
753
635,622
7 9.84 261,090
�
�
i
I
i
Pond 21-Routed
I
i
I
POND21-04-20-09 gpw
Return Period: 100 Year Sunday, May 3, 2009
Hydrograph Report
Hydral Hydrographs Extension for AutoCAl— Civil 3D® 2009 by Autodesk. Inc. v6 066
Hyd. No. 1
PRE DEVELOPMENT POND 21
Hydrograph type
= SCS Runoff
Storm frequency
= 100 yrs
Time interval
= 1 min
Drainage area
= 25.110 ac
Basin Slope
= 1.3 %
Tc method
= TR55
Total precip.
= 10.00 in
Storm duration
= 24 hrs
Sunday, May 3, 2009
Peak discharge = 85.52 cfs
Time to peak =
757 min
Hyd. volume =
629,156 cult
Curve number =
75'
Hydraulic length =
2280 ft
Time of cone. (Tc) =
56.00 min
Distribution =
Type III
Shape factor =
484
Composite (Area/Cl = [12 690 x 74) + (7 480 x 70) + (3 830 x 80) + (11 110 x 77)1t 25 110
Q (cfs)
9000
8000
7000
6000
5000
4000
30.00
2000
10.00
PRE DEVELOPMENT POND 21
Hyd No 1 -- 100 Year
Q (cfs)
9000
8000
7000
60.00
50.00
40,00
30,00
20.00
1000
0.00 1 1 1 1 1 1 1 1 1 11 1 0.00
0 120 240 360 480 600 720 840 960 1080 1200 1320 1440 1560
Time (min)
—�— Hyd No 1
24
Hydrograph Report
Hyd.Nu 3
Pnm-DevAmenity Pond
Hydrographty= SCS Runoff
Peak discharge
= 2622cfs
Storm frequency = 100ys
Time tnpeak
= 736min
Time interval =1min
Hvdvn|ume
=13e.oeoouft
Drainage area = 4420a:
Curve number
= Os'
Basin Slope = 00%
Hydraulic length
= Oft
To method = TR55
Time ofconc. (Tc)
= uzgOmin
Tota|pnacip. = 10.00in
Distribution
= Type III
Storm duration = z*xrs
Shape factor
= 484
Composite *reamw~wem^**~nmw^,+~v5m^mw'4 420
post-Dev Amenity Pond
Q lcfs) Hyd wno-1ooYear o(Cfs)
uaou 28,00
2400 2400
2000 2000
1600 1aM
1zou 1200
oon 8,00
400 4»o
o� o�
o 120 240 360 480 600 720 840 960 1080 1200 1320 1440 1560
Time (min)
~�~Hvuwo3
25
Hydrograph Report j
Hydraflow Hydrographs Extension for AutoCAD(N Civil 3D6 2009 by Autodesk. Inc. v6 066
Hyd. No. 4
POST DEVELOPMENT
POND 21
Hydrograph type
= SCS Runoff
Storm frequency
= 100 yrs
Time interval
= 1 min
Drainage area
= 20.670 ac
Basin Slope
= 1.0 %
Tc method
= TR55
Total precip.
= 10.00 in
Storm duration
= 24 hrs
Composite (ArealCN) = if 1 1 040 x 98) t Q 900 x 74) - (5 730 x 80)) / 20.670
Q (cfs
120 00
100.00
8000
Won
40.00
20 00
May 3, 2009
Peak discharge = 115.58 cfs
Time to peak =
739 min
Hyd. volume =
640,121 cuft
Curve number =
88'
Hydraulic length =
2245 ft
Time of conc. (Tc) =
29.30 min
Distribution =
Type III
Shape factor =
484
POST DEVELOPMENT POND 21
Hyd. No. 4 -- 100 Year
JI
I I I i j
I j
i i I
I I I j
I I I I I
I ,
I I I I
0 00
0 120 240
m--- Hyd No 4
Q (cfs)
120.00
10000
4000
20.00
000
360 480 600 720 840 960 1080 1200 1320 1440 1560
Time (min)
Hydrograph Report
Hydraflow Hydrographs Extension
For AutoCAD® Civil 3DO 2009 by Autodesk, Inc. v6 066
Hyd. No. 6
Amenity Pond -Routed
Hydrograph type
= Reservoir
Storm frequency
= 100 yrs
Time interval
= 1 min
Inflow hyd. No.
= 3 - Post-Dev Amenity Pond
Reservoir name
= Amenity Pond
Storage Indication method used
26
Sunday. May 3. 2009
Peak discharge
= 2.435 cfs
Time to peak
= 839 min
Hyd. volume
= 130,228 cuft
Max. Elevation
= 22.75 ft
Max. Storage
= 78,053 cuft
Amenity Pond -Routed
0 (cfs) Hyd. No. 6 -- 100 Year
28.00
i
2400
2000
1600
I
j
I j
1200
I
I
800
I j
I
400
0.00
0 (cfs)
28,00
2400
20,00
1600
12.00
800
400
n nn
0 300 600 900 1200 1500 1800 2100 2400 2700 3000
Time (min)
Hyd No 6 Hyd No 3 Total storage used = 78.053 tuft
27
Hydrograph Report
Hydraflow Hydrographs Extension for AutoCADr- Civil 3D4> 2009 by Autodesk. Inc v6 0661i}iy : ,. _ _ _._
Sunday May 3 2009
Hyd. No. 7
Combined Developed
Hydrograph type = Combine
Peak discharge =
117.48 cfs
Storm frequency = 100 yrs
Time to peak =
739 min
Time interval = 1 min
Hyd. volume =
770,349 cuft
Inflow hyds. = 4, 6
Contrib. drain. area=
20.670 ac
Combined Developed
Q (cfs) Q (cfs)
Hyd No 7 -- 100 Year
120.00 120 00
I i
i q I
10000 100.00
I I I I i
I I i i
i
8000 8000
I III, I
60 00 6000
�I
I
I I
40.00 4000
I I
I I
2000 20.00
i i I
I I i
I i I
I
0.00 000
0 180 360 540 720 900 1080 1260 1440 1620
Time (min)
�— Hyd No 7 Hyd No 4 — Hyd No 6
Hydrograph Report
Hydraflow Hydrographs Extension for AutoCAD(R) Civil 3D.7 2009 by Autodesk, Inc v6 066
Hyd. No. 9
Pond 21-Routed
Hydrograph type
= Reservoir (Interconnected)
Storm frequency
= 100 yrs
Time interval
= 1 min
Upper Pond
Pond name
= POND 21-FOREBAY
Inflow hyd.
= 7 - Combined Developed
Max. Elevation
= 9.84 ft
Max. Storage
= 96,049 cuft
Interconnected Pond Routing Storage Indication method used
28
Sunday.. May 3. 2009
Peak discharge = 98.94 cfs
Time to peak = 753 min
Hyd. volume
= 635,622 cuft
Lower Pond
Pond name
= POND 21-MAIN PO(
Other Inflow hyd.
= None
Max. Elevation
= 9.26 ft
Max. Storage
= 165,041 cuft
Pond 21-Routed
O (cfs) Hyd No 9 -- 100 Year O (cfs)
12000 12000
I j
j I
100,00 100.00
j I
� I
8000 8000
j I �
i
6000 6000
j (
40-00 4000
j
j
2000.2000
i I
I _
000 m 000
0 180 360 540 720 900 1080 1260 1440 1620 1800
- Hyd No 9 Hyd No 7 Total storage used = 261,090 cult Time (min)
Outflow Pond 5
101E AiRGV CLASSss fi7AC11/ AV"wrrfau � or
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qq\lrm/A�rr��rr//r/q/mamr
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'
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rrr�rmr�wr//rgrrr/h`Arrrraa
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'
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rag
rnru/OrmrO/rrrr/wqr/q//aEN
rl�rrrrU/a/rrr/Orgrrra
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rr
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uateEs cAinz>P SJ@E 47 AAO/WT f1PE
rrAl� Hbarrr �
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�' c ,,� r ; j , t. � � , r�;-•1 r , . T�ai<c - � E�E � � I E t� � (l �' " � � t-7• rid 6AT
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_
Channel Report
Hydraflow Express Extension for AutoCADT Civil 361J 2009 by Autodesk, Inc
POND 21 - OUTLET STRUCTURE
Circular
Diameter (ft)
= 18.00
Invert Elev (ft)
= 6.00
Slope (%)
= 0.02
N-Value
= 0.013
Calculations
Compute by:
Known Q
Known Q (cfs)
= 12.00
Section
F.i[Q11
14y May 3 2009
Highlighted
Depth (ft)
= 1.31
Q (cfs)
= 1200
Area (sqft)
= 8.46
Velocity (ftls)
= 1.42
Wetted Perim (ft)
= 9.90
Crit Depth, Yc (ft)
= 0.68
Top Width (ft)
= 9.41
EGL (ft)
= 1.34
Depth (ft)
21 00
18.00
15,00
18 00 12.00
i I
15.00 9.00
12.00 — 600
I
i
900 — 300
600 000
300 -3,00
0 2 4 6 8 10 12 14 16 18 20 22
Reach (ft)
RECEYVF,D
MAY 1 3 2009
BY
Erosion Control Specifications
Erosion and Sedimentation Control
101 General The contractor shall be responsible for erosion and sedimentation
control within the construction limits, for prevention of sediment laden runoff leaving the
construction limits or entering ditches, streams or water impoundments, and for
implementation of necessary erosion and sedimentation control measures to meet the
requirements of the North Carolina Department of Environment, Health, and Natural
Resources The Contractor shall also be responsible for all damages or fines resulting
from erosion or sediment laden runoff in the execution of his contract
102 Construction Sequence While the use of erosion and sedimentation control
devices is especially important on areas of steep topographv, easily erodible soils and
sites in close proximity to water courses throughout the construction period, the control
measures should be installed prior to the commencement of land clearing and shall be
fully maintained and periodically inspected until final restoration and stabilization is
completed Unrestored cleared areas shall be kept to a minimum Disturbed areas ahead
of construction shall only be accomplished on those segments for the shortest practical
distance as required for continual progress
Final restoration shall not be delayed until completion of the project but will be carried
out in phases as the work proceeds Under no circumstances will any slopes be left
denuded for more than 15 calendar days Under no circumstance will any are be left
denuded for more than (21) twenty-one calendar days without some form of stabilization
until final restoration is complete
103 Sedimentation Control Measures The following are some of the sediment
control devices or measures that may be required to prevent sedimentation of streams,
water courses, or drainage structures
Earth berms and/or diversion and intercept ditches
Sediment traps
Filter berms
Wire and Gravel Filter inlets
Silt fences - not to be placed in streams or ditches perpendicular to flow
Check dams gravel filter
Gravel construction exit
103 1 Erosion Control Measures Some of the soil erosion control measures which
may be required in this contract are
Earth slope protection
Diagonal water break diversion berms
Diversion channels
Preservation of existing vegetation
Storm inlet protection
Stream crossings
Energy dissipators
Matting of re -seeded areas
MAY 1 3 2009
103 2 DetailDrawing Examples of sedimentation and erosion control
shown in these plans for installation at locations designated in the plans or as otherwise
required by the regulating agency, or the owner as work proceeds
104 Stream Protection Where construction activities are necessary in close
proximity to streams, and other waterways, they shall be performed in a manner that does
not contribute to degradation of or blockage of the stream -flow In order to prevent
possible degradation or blockages, the contractor shall be required to
I Keep all construction debris, excavated materials, brush, rocks, refuse and topsoil
as far from these waterways as possible Restrict machinery operation or stream
crossings in waterways to the extent necessary for construction of utilities crossings
2 If construction work areas are necessary in a waterway, they shall be protected as
indicated on the plans
3 If temporary roadways are essential for the construction activities, they shall be
constructed of soils which are not highly erodible materials and must not span more than
half way across the water course or wetland area at any one time unless otherwise
approved by the Engineer These temporary roadways shall be entirely removed as soon
as their requirement is met Work in these areas shall follow the requirements of the
Corp of Engineers or CAMA permit, or plans as applicable
105 Construction Access The travel of equipment to and from the construction
areas shall be minimized not only to protect areas that will not be denuded, but also to
prevent the spreading of sediment within and outside of the construction areas
Therefore, special construction equipment travel corridors will be established for this use
and instructions shall be issued for their use Use of these corridors must be fully
enforced Other non -essential traffic will be restricted or discouraged Indiscriminate
and convenience traffic shall not be allowed
106 Stockpile/Borrow Areas The Contractor shall be responsible for selecting,
obtaining and maintaining stockpile or borrow areas which he may require to complete
the contract He is also required to design and incorporate all necessary sediment and
erosion controls measures necessary to prevent erosion and contribution of sediment to
adjacent areas The Contractor is responsible to obtain all necessary permits or approvals
for borrow or spoil areas outside the construction limits
107 Disposal of Excess Water From Excavations The Contractor shall practice
management of excess water pumped from excavation to reduce the production and
spreading of sediment Pumped water shall be discharged onto stabilized surfaces and
allowed to filter through existing vegetation if possible, otherwise, additional control
measures may be necessary If ditches are required to remove pumped water from
construction excavations, they shall be given the same consideration as any other man-
made waterway and they shall be stabilized as to not degrade and produce sediment
108 Excavation and Backfill Excavation shall be closely controlled and all the
material removed from the excavation shall be selectively stockpiled in areas where a
minimum of sediment will be generated and where other damage will not result from the
piled material Drainage ways shall be protected at all times and the placement of
ECE1�v
MAY 1 3 2009
material in Drainage ways for convenience shall not be allowed Backfi
shall be performed in such a manner that remaining trees are not damaga
109 Final Grading and Seeding Finish grading, topsoiling, seeding and/or sodding
shall be performed after the construction phase is complete Permanent vegetation of the
areas, that have been disturbed, shall be re-established as rapidly as possible If the
completion of the construction activities do not coincide with a season in which
permanent vegetation can be generated, an interim or temporary program is required
This shall include soil conditioners and mulching as necessary for soil stabilization In
any case, sediment and erosion controls shall be installed promptly and their maintenance
assured
1 10 Approval The approved Erosion Control Plan will be provided by the Owner
Any standard conditions relating to soil erosion and sediment control issued to the
Contractor as a part of any permits shall be available at the job site at all times
I�>
CAPE FEAR
Engineering, Inc.
151 Poole Rmd Suite 100
B.Mlle NC 2e451
TEL (910) 383 1044
FAX (910)MX 1045
www capefearengmeermg com
To
NC DWQ Surface Water Protection
State Stormwater Section
127 Cardinal Drive Ext
Wilmington, NC 28405
-TiFn7
Mary Jean Naugle
MAY 1 2 2009
--:r
Transmittal
Date I May 12, 2009
File 809-02 "36"
Subject I Ocean Isle Palms Phase 1A and 1 B
SW8 060338
Partial P E Certifications Ponds 12 and 14
❑ As Requested ® For Your Files ❑ For Distribution ❑ For your Review / Action / Approval
❑ Sent via Mail ❑ Sent via Courier
Quantity
Drawing No
Description
1
copy
Partial P E Certification Pond #12
1
copy
Partial P E Certification Pond #14
Rmaji- t 1WD42-z ,zoi�r�D to ('61 P Pbi,—z 3, i
REMARKS
CC File Copy 809-02 "36
Cape Fear Engineering Inc
Signed
Received By
Date
Transmittal-MJ-Express 051209
L \Admin\PERMIT Forms\CHECKLISTS & TRANSMITTALS
CAPE FEAR
'i Engineering, Inc.
151 Poole Road Suite 100
BeMlle NC 28a51
TEL (B/0)383-1004
FAX (810) 383 10a5
www capefearengrneering corn
To
INC DWQ Surface Water Protection
State Stormwater Section
127 Cardinal Drive Ext
Wilmington, NC 28405
Attu
Mary Jean Naugle
❑ As Requested ❑ For Your Files
❑ Sent via Mail ❑ Sent via Courier
MAY t b 2M
Transmittal
c---
Date May 7, 2009
File 809-02 "36"
Subject "High Density w/Detention Pond" State
Stormwater Management Permit
Submittal
❑ For Distribution ® For your Review / Action / Approval
Quantity
Drawing No
Description
1
copy
Revised calculations for Pond #12, #14 and #21
1
copy
NEW supplement & OM for Pond #14 and page 2 and 2A of main application
3
copies
Revised sheets SW-1, SW-2, and SW-5
1
copy
Revised narrative
REMARKS Mary Jean
We reviewed impervious allocations for the ponds that we are not proposing to change, 12 and
14, as you requested The total number of lots has been revised to reflect 231 lots plus the 7 lots that we
adding for a total of 238 lots Please see revised documents and call me if you have questions
CC File Copy 809-02 36"
Cape Fear Engineering Inc
Signed A&
Received By
Date
Transmittal-MJ-Express 050709 doc
L \Admin\PERMIT Forms\CHECKLISTS & TRANSMITTALS