HomeMy WebLinkAboutSW8000638_HISTORICAL FILE_20001127STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SW8OO�3�S
DOC TYPE
❑ CURRENT PERMIT
❑ APPROVED PLANS
fA HISTORICAL FILE
❑ COMPLIANCE EVALUATION INSPECTION
DOC DATE
2C7pp 11 ZI
YYYYMMDD
J1111c all, Novih C,arollna
'Deplintment of Environment
And Natural Resources
Wilmington Regional Office
James 13. Hunt, Jr., Governor
Bill Holman, Secretary
Division of Watcr. Quality
Mr. Steve Mann. Vice President
North Carolina Coastal Developments. Inc.
15 Causeway Drive
Ocean Isle Beach. NC 28469-0750
Dear Mr. Mann:
November 27. 2000
Subject: Permit No. SW8 000638
Ocean Isle West Destination Resort. Sec?. Phasc 3
1-ligh Dcnsity Stormwater Project
Brunswick CountV
the 'Ali lmingloll Regional Office received a complete Stormwater Management Permit Application for Ocean Isle
West Destination Resort, Section 2. Phase 3. on October 13. 2000. Staff review ofthe plans and specifications has
determined that the project, as proposed, will comply with the Stormwater Regulations set forth in Title 15A NCAC
21-1.1000, We are forwarding Permit No. SW8 000638 dated November 27, 2000, for the construction of Ocean Isle
West Destination Resort. Section 2. Phase 3.
This permit shall be effective from the date of issuance until November 27, 2010, and shall be subject to the
conditions and limitations as specified therein. Please pay special attention to the Operation and Maintenance
requirements in this permit. Failure to establish an adequate system for operation and maintenance ofthc storntwater
managcmerrt system will result in future compliance problems.
I f 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 I-learings. P.O. Drawer 27447. Raleigh. NC 27611-7447. Unless such demands
are made this permit shall be final and binding.
If VOL] have any questions. or need additional information concerning this matter, please contact Linda Lewis, or
me at (910) 3.95-3900.
Sincerely.
RSS/arl: S:AWQS\STORMWA"I1P!RMI
cc: Mark Arcuri. P.F.
Rick Shiver
Water QualiLv Regional Supervisor
f\000638.N0V
Ocean Isle Beach Building Inspections Department
Linda Lewis
Wilmington Regional Office
Central Files
127 Cardinal Dr. Ext.. Wilmington. North Carolmn 2N405 Telephone 910395-3900 FAX 910-3511 20t1-1
An Fqunl Opportunit% Affu'nmive Action ISmpluyer 511'% rercelal/I11';6 pull -roost mer paper
State Stormwatcr Management Systems
Permit No. SW8 000638
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCFS
DIVISION OF WATER QUALITY
STATE STORMIN'ATER MANAGENIF.NT PERMIT
HIGH DENSITY DEVELOPMENT
In accordance with the provisions ofArticle 21 ofChapter 143, General Statutes ol'North Catalina as amended, and
other applicahle Laws, RUIes, and Regulations
PERMISSION IS UIFREBV GRANTED TO
North Carolina Coastal Developments, Lne.
Ocean isle West Destination Resort, Section 2, Phase 3
Brunswick Co-tudy
FOR THE
construction, opcfation and maintenance of an underground infiltration trench system in compliance with the
provisions of 15A NCAC 21-1 .1000 (hereafter referred to as the "stormwater rules") and the approved stormwatel,
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 27, 2010 and shall be subject to the
{allowing specified conditions and limitations:
1. DESIGN STANDARDS
This permit is effective only with respect to the nature and volume of stormwatcr described in the
application and other supporting data.
2. This stormwatcr system has been approved for the management ofstormwaler runoff as described on page
3 ofthis permit, the Project Data Shcet.'I'he stormwater control has been designed to handle the runoff from
96,304 square feet of impervious at-ca. This pond must be operated with a vegetated filter.
3. Approved plans and specifications for this project arc incorporated by reference and arc enforceable parts
of the permit.
4. The u-act will be limited to the amount of built -upon area indicated on page 3 of this permit, and per
approved plans.
5. No future development has been allotted for this project.
6. '['Ile runoff from all onsile and offsite built -upon arca permitted with this project must be directed into the
permitted stormwater control system.
7. This trench system must be operated with a 50' vegetated filter.
2
Stale Slormwater Management Systems
Permit No. SbV8 000638
DIVISION OF WATER QUALITV
PRO.IECT DESIGN DATA SHEET
Project Name: Ocean Islc West Destination Resort, Section 2, Phase 3
Permit Number: SW8 000638
Location: Brunswick COnntV
Applicant: Mr. Steve Mann. Vice President
Mailing Address: North Carolina Coastal Developments, Inc.
15 Causeway Drive
Ocean Isle Beach, NC 28469-0750
Application Datc:
Name of Receiving Stream/Index it:
Classification of Water Body:
IfClass SA, chloride sampling results
Trench Dimensions, LxWNI-I ,feet:
Permanent Pool Elevation, FMSL:
Drainage Area, acres:
Total Impervious Surfaces, ft':
Offsite Area entering Pond, ft2:
Required Storage Volume, ill:
Provided Storage Volume, ft':
Temporary Storage Elevation, FMSL:
Controlling Orifice:
Type of Soil:
Expected Hydraulic Conductivity:
Seasonal High WaterTabla
Time to Drawdown:
October 13, 2000
Atlantic Ocean / (IMR 99-1)
"Sill,
n/a
2.11Tx47x2.5'
5.7
2.24
96,304
none, per Engineer
11,444
1 1,487
8.2
n/a-overflow bypass to vegetated filter
Sand
7" per hour
3.7 FMSL.
2 hours
3
State Stormwatcr Management Systems
Permit No. SW8 000638
IL SCHEDULE OF COMPLIANCE
']'lie stormwater management system shall be constructed in it's entirely, vegetated and operational for its
intended use prior to the construction of any built -upon surface.
During consUIuction, erosion shall be kept to a minimum and any eroded areas ofthe system will he repaired
immediately.
'file permittee shall at all times provide the operation and maintenance necessary to assure the permitted
stormwater system functions at optimum efficiency. The approved Operation and Maintenance Plan must
be followed in its entirety and maintcnancc must occur at the scheduled intervals including, but not limited
to:
It. Semiannual scheduled inspections (every 6 months).
b. Sediment removal.
C. Mowing and revegetation of'side slopes.
d. Immediate repair of eroded areas.
C. Maintenance ol'side slopes in accordance with approved plans and specifications.
F. Debris removal and unclogging of outlet structure, orifice device and catch basins and piping.
g. Access to the outlet structure must be available at all times.
h. The vegetated filter will be kept grassed with no crosion. The spreader mechanism will be kept free
of sediment and trash, and must distribute the runoff evenly over the width of the filter.
4. Records of maintenance activities must be kept and made available upon request to authorized personnel
of DWQ. The records will indicate the date, activity, name ofperson performing the work and what actions
were taken.
5. The facilities shall be constructed as shown on the approved plans. "Phis permit shall become voidable unless
the facilities are constructed in accordance with the conditions of this permit, the approved plans and
specifications, and other supporting data.
Upon completion of construction, prior to issuance of a Certificate of Occupancy, and prior to operation of
this 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.
The stormwater, system may not be used as a temporary Erosion Control device.
The following items will require a modification to the permit, prior to construction
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.
C. Purthersubdivision,acquisition,orsalcofthcprojectarea.Thcprojectareaisdefinedasallproperty
owned by the permittec, for which Sedimentation and Erosion Control Plan approval was sought.
f. Pilling in, altering, or piping of any vegetative conveyance shown on the approved plan.
9. The Director may determine that other revisions to the project should require a modification to the permit.
10. A copy of the approved plans and specifications shall be maintained on file by the PCrnlillee fora minimum
often years from the date of the completion of construction.
11. 'file permittee is responsible for verifying that the proposed built -upon area does not exceed the allowable
built -upon area.
Slate Stormwater Management Systems
Permit No. SW8 000638
12. Prior to the sale of any portion of the property, an access/maintenance easement to the stormwater facilities
shall be granted in favor of the permittce if access to the stormwater facilities will be restricted by the sale
of any portion of the property.
13. The Director may notify the permittce when the permitted site does not meet one or nuireofthc minimum
rcquiremcnts of the permit. Within the time frame Specified in the notice, the permittce Shall submit a written
time schedule to the Director for modifying the site to meet minimum requirements. 'file permittce shall
provide copies of revised plans and certification in writing to the Director that the changes have been made.
14. The permitter shall notify the Division ofany name, ownership or mailing address changes within 30 days.
Ill. GENERAL CONDITIONS
This permit is not transferable. In the event there is it desire for the facilities to change ownership, or there
is a name change of the Pcrmittec, it formal permit request must be submitted to the Division of Water
Quality accompanied by an application Ice, documentation from the parties involved, and other supporting
materials as may be appropriate. The approval of this request will be considered on its merits and may or
may not be approved.
2. Failtu'e to abide by the conditions and limitations contained in this permit may subject the Pcrmittec to
enforcement action by the Division of Water Quality, in accordance with North Carolina General Statute
143-215.6A to 143-215.6C.
3. The issuance ofthis permit does not pt'eclude the Permittee fi'om complying with any and all statutes, rules,
regulations. or ordinances which may be imposed by other government agencies (local, state, and federal)
which have jurisdiction.
In the event that the facilities fail to perform satisfactorily, including the creation of nuisance conditions.
the Pcrmittec shall take immediate corrective action, including those as may be required by this Division.
such as the consu'uction of additional or replacement stormwater management systems.
'file permittce grants DI3NR Staff permission to enter the property for the purpose of inspecting all
components of the permitted stormwater management facility.
The permit may be modified, revoked and reissued or terminated for cause. The fling of a request for a
permit modification, revocation and reissuancc or termination does not stay any permit condition.
Unless specified elsewhere, permanent seeding requirements for the stormwater control must follow the
guidelines established in the North Carolina Erosion and Sediment Control Planning and Design Manual.
Permit issued this the 27(h day of November, 2000.
NORTH CAROUNA E'NVIRONMI3NTAI, MANAGFIMI.,NT COMMISSION
Kerr T. Stevens, Director
Division of Witter Quality
11), Authority of the Environmental Management Commission
Permit Number SW8 000638
OFFICE USE ONLY
Date Received
Fec Paid
Permit Number
10-13-2wo
1
1 5w8 00( Co38
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
This form may he photocopied far use as an original
1. GENERAL INFORMATION
1. Applicants name (specify the name of the corporation, individual, etc. who owns the project):
North Carolina Coastal Developments, Inc.
2. Print Owner/Signing Official's name and title (person legally responsible for facility and compliance):
Steve Mann, Vice President
3. Mailing Address for person listed in item 2 above:
15 Causewav Drive
City: Ocean Isle Beach State: North Carolina Zip: 28469-0750
Telephone Number: ( 91
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 West Destination Resort- Section 2, Phase 3
5. Location of Project (street address):
Ocean Isle West Blvd. (adjacent to Sand Castle Condos)
City: Ocean Isle Beach County: Brunswick
6. Directions to project (from nearest major intersection):
Travel East on NCSR 904 (Ocean Isle Beach Rd. SW) to its point of intersection with First Street. Turn
right on First Street. Project is approx. 2.0 miles to the west and fronts Ocean Isle West Blvd. Adjacent to the
7. Latitude: 78 degrees 27' 30" Longitude: 33 degrees 52' 55" of project
8. Contact person who can answer questions about the project:
Name: Steve Mann Telephone Number ( 910 ) 575-7771
H. PERMIT INFORMATION:
1. Specify whether project is (check one): x_New Renewal Modification
FORM SWU-101 Version 3.99 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
N/A
3. Specify the type of project (check one):
and its issue date (il'known)
Low Density X High Density Redevelop General Permit Other
4. Additional Project Requirements (check applicable blanks):
X CAMA Major X Sedimentation/Erosion Control _ 404/401 Permit _ NPDES Stornnvater
Note: Existing CAMA permit in place, see attached permit
Information on required state permits can be obtained by contacting the Customer Service Center at
1-877-623-6748.
III. PROJECT INFORMATION
1. In the space provided below, summarize how stormwater will be treated. Also attach a detailed narrative
(one to two pages) describing stormwater management for the project.
Stormwater will be treated by utilization of infiltration trenches for the first 1 '/2 inch of rainfall. Rainfall in
excess of the first 1 '% inch will be routed through separate overflow pipinq to a grass swale as per NCDENR
2. Stormwater runoff from this project drains to the Eastern Channel/Lumber River basin.
3. Total Project Area: 3.52 acres
4. Project Built Upon Area: 2.21 acre
5. How many drainage basins does the project have? 2
6. Complete the following information for each drainage area. If there are more than two drainage areas in the
project, attach an additional sheet with the information for each area provided in the same format as below.
Basin Information
Drainage Area 1
Drainage Area 2
Receiving Stream Name
Eastern Channel/ Lumber
Eastern Channel/ Lumber
Receiving Stream Class
SA
SA
Drainage Area
97,629 SF = 2.24 AC
39,872 SF = 0.92 AC
Existing Impervious* Area
0 SF
0 SF
Proposed Impervious* Area
54�F-=-9.832-",C q(p 304 Sr
0 AC
% Impervious* Area (total)
98.6%
0 %
Impervious* Surface Area
Drainage Area I
Drainage Area 2
On -site Buildings
16185 SF
0 SF
On -site Streets
0 SF
0 SF
On -site Parking
78319 SF
0 SF
On -site Sidewalks
1800 SF (inc. sidewalk & HC Ramp)
0 SF
Other on -site
0 SF
0 SF
Off -site
0 SF
0 SF
Total:
Y=96,304 SF = 2.21 AC
1=0 SF = 0 AC
*Impervious area is defined as the built upon area including, b,d not limited to, buildings, roads, parking
areas, sidewalks, gravel areas, etc.
FORM SWU-101 Version 3.99 Pare 2 of
How was the off -site impervious area listed above derived? No offsite impervious
IV. DEED RESTRICTIONS AND PROTECTIVE COVENANTS
The following italicized deed restrictions and protective covenants are required to be recorded for all
subdivisions, outparcels and future development prior to the sale of any lot. If lot sizes vary significantly, a table
listing each lot number, size and the allowable built -upon area for each lot must be provided as an attachment.
1. The following covenants are intended to ensure ongoing connplicmce with stcrte stornnvcuer ntcumgennent
permit number N/A as issued by the Division of Water Quality.
These covenants may not be changed or deleted without the consent of the State.
2. No more than A'/A square feet of any lot shall be covered by structures or impervious
materials. I npervious materials include asphalt, gravel, concrete, brick, stone, slate or similar material but
clo not include wood decking or the crater surface of swinnning pools.
3. Swales shall not be filled in, piped, or altered except as necessary to provide driveway crossings.
d. Built -upon area in excess of the permitted amount requires a state stortmvater management permit
modification prior to construction.
5. All permitted runofffi'mn outparcels or future development shall be directed into the permitted.stormwater
control system. These connections to the stornnvater controlsystent .shall be petformed in a manner that
maintains the integrity and performance of the system as permitted.
By your signature below, you certify that the recorded deed restrictions and protective covenants for this project
shall include all the applicable items required above, that the covenants will be binding on all parties and persons
clairriing under them, that they will run with the land, that the required covenants cannot be changed or deleted
without concurrence from the State, and that they will be recorded prior to the sale of any lot.
V. SUPPLEMENT FORMS
The applicable state stormwater management permit supplement form(s) listed below must be submitted for each
BMP specified for this project. Contact the StorniNvater and General Permits Unit at (919) 733-5083 for the
status and availability of these forms.
Form SWU-102
Wet Detention Basin Supplement
Form SWU-103
Infiltration Basin Supplement
Form SWU-104
Low Density Supplement
Form SWU-105
Curb Outlet System Supplement
Form SWU-106
Off -Site System Supplement
Form SWU-107
Underground Infiltration Trench Supplement
Form SWU-108
Neuse River Basin Supplement
Form SWU-109
Innovative Best Management Practice Supplement
FORM SWU-101 Version 3.99 Page 3 of
VI. SUBMITTAL REQUIREMENTS
Only complete application packages will be accepted and reviewed by the Division of Water Quality
(DWQ). A complete package includes all of the items listed below. The complete application package
should be submitted to the appropriate DWQ Regional Office.
I. Please indicate that you have provided the following required information by initialing in the space provided
next to each item.
Initials
• Original and one copy of the Stormwater Management Permit Application Form
• One copy of the applicable Supplemental Fornt(s) for each BMP
• Permit application processing fee of $420 (payable to NCDENR)
• Detailed narrative description of stormwater treatment / management
• Two copies of plans and specifications, including:
— Development / Project name
— Engineer and firm
— Legend
— North arrow
— Scale
— Revision number & date
— Mean high water line
— Dimensioned property / project boundary
— Location map with names 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 basins delineated
— Vegetated buffers (where required)
VI►. AGENT AUTHORIZATION
If you wish to designate authority to another individual or firm so that they map provide information on your
behalf, please complete this section.
Designated agent (individual or firm): McKim and Creed P.A.- Mark T. Arcuri PE
Mailing Address: 243 North Front Street
City: Wilmington State: North Carolina Zip: 28401
Phone: ( 910 ) 343-1048 Fax: ( 910) 251-8282
Vill. APPLICANT'S CERTIFICATION
I, (prim or type name ofperson listed in General Information, item 2) Steve Mann ,
certify that the information included on this permit application form is, to the best of my knowledge, correct and
that the project will be constructed in conformance with the approved plans, that the required deed restrictions
and protective covenants will be recorded, and that the proposed project complies with the requirements of 1 5A
NCAC 21-1.1000.
Signature / Date
FORM SWU-101 Version3.99 Page4of4
Permit No.5w'y COO Co 3 8
(to be provided by DIVQ)
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
UNDERGROUND INFILTRATION TRENCH SUPPLEMENT
This form may be photocopied for use as an original
DWO Stormwater Management Plan Review:
A complete stormwater management plan submittal includes a stormwater management permit application, an
underground infiltration trench supplement for each system, design calculations, and plans and specifications
showing all stormwater conveyances and system details.
I. PROJECT INFORMATION
Project Name Ocean Isle West Destination Resort Sec 2 Phase 3
Contact Person: Steve Mann - VP Phone Number: (910) 575-7771
For projects with multiple infiltration systems, a supplement form must be completed for each system. This
worksheet applies to: Trench NA in Drainage Area
(from plans) (fiom Form SWU-101)
ONLY ONE SYSTEM
I1. DESIGN INFORMATION (attach supporting calculations/documentation):
Soils Report Summary (based upon an actual field investigation and soil borings)
Soil Type sand, single grained
Infiltration Rate 14 in/hr r cf/hr/sf (circle appropriate units)
SHWT Elevation 3.7 fmsl (Seasonal High Water Table elevation)
Trench Design Parameters
Design Volume 11,439 c.f.
Design Storm 1.5 inch event (1.5 inch event for S.4 waters, I inch event for others)
Drawdown Time 0,083 days ( 2 hours)
Perforated Pipe Size 1 5 inch diameter
Perforated Pipe Length 2113 ft. (does not include 2' @ each pipe end)
No. Observation Wells NA (mcry be required on a case-bv-case basis)
Stone Type (if used) # 5 7
Stone Void Ratio a n s
Trench Elevations (infect mean sea level)
Bottom Elevation 5.7 fmsl
Storage/Overflow Elevation 8 . 2 fmsl
Fom SWU-107 Rev 3.99 Page I of 4
Trench Dimensions
Height
Width
2.5
4.7 ft.
III. REQUIRED ITEMS CHECKLIST
Length
Volume Provided
2113 ft.
11,486 cu.ft.
The following checklist outlines design requirements per the Stormwater Best Management Practices manual (N.C.
Department of Environment, Health and Natural Resources, November 1995) and Administrative Code Section: 15
A NCAC 2H .1008.
Initial in the space provided to indicate that the following design requirements have been met and supporting
documentation is attached. If the applicant has designated an agent in the Stormwater Management Permit
Application Form, the agent may initial below. Attach justification if a requirement has not been met.
Applicants Initials
N 1 Jk a. System is located 50 feet from class SA waters and 30 feet from other surface waters.
p!y i b. System is located at least 100 feet from water supply wells.
M (c. Bottom of system is at least 2 feet above the seasonal high water table.
Mt A d. Bottom of the system is 3 feet above any bedrock or impervious soil horizon.
H e. Off-line system, runoff in excess of the design volume bypasses the system (bypass detail
provided).
t ¢ f. System is designed to draw down the design storage volume to the proposed bottom
elevation under seasonal high water conditions within five days based upon infiltration
through the bottom only (a hydrogeologic evaluation may be required).
M I A g. Soils have a minimum hydraulic conductivity of 0.52 inches per hour.
Nx 1 A h. System is not sited on or in fill material or DWQ approval has been obtained.
1 A i. Plans ensure that the installed system will meet design specifications (constructed or
restored) upon initial operation once the project is complete and the entire drainage area is
stabilized.
t A j_ System is sized to take into account the runoff at the ultimate built -out potential from all
surfaces draining to the system, including any off -site drainage.
&l t P- k. System is located in a recorded drainage easement for the purposes of operation and
maintenance and has recorded access easements to the nearest public right-of-way.
M t 1. System captures and infiltrates the runoff from the first 1.0 inch of rainfall (1.5 inch event
for areas draining to SA waters ).
1 A m. Drainage area for the device is less than 5 acres.
M (A- n. A pretreatment device ( filter strip, grassed Swale, sediment trap, etc.) is provided.
M 1 ik- o. Trench bottom is covered with a layer of clean sand to an average depth of 4 inches.
M ({� p. Sides of the infiltration trench are lined with geotextile fabric.
M k {i q. Rock used is free of fines (washed stone) and has a large void ratio.
NA r. Side to bottom area ratio is less than 4: 1.
Fonn SWU-107 Rev 3.99 Page 2 of 4
lN� s. Observation well(s) are provided (case -by -case basis).
►js i i� t. Vegetated filter is provided for overflow (50 feet for SA waters, 30 feet for other waters)
and detail is shown on plans.
M 1 u. A benchmark for checking sediment accumulation is provided.
IV. UNDERGROUND INFILTRATION TRENCH OPERATION AND MAINTENANCE AGREEMENT
1. After every runoff producing rainfall event and at least monthly inspect the bypass/overflow structure for
blockage and deterioration and the infiltration system for erosion, trash accumulation, grass cover, and general
condition.
2. Repair eroded areas immediately, re -seed as necessary to maintain adequate vegetative cover, mow vegetative
cover to maintain a maximum height of six inches, and remove trash and blockages as needed to maintain
system performance.
3. Remove accumulated sediment annually or when depth is reduced to 75%, of the original design depth. Restore
depth to original design depth without over -excavating. Over -excavating may cause the required water table
separation to be reduced and may compromise the ability of the system to perform as designed.
4. The water level in any monitoring wells will be recorded after a 1 inch rainfall event and at least once a month.
Chronic high water table elevations (within 1 foot of the bottom of the system for a period of three months)
shall be reported to DWQ immediately.
5. If DWQ determines that the system is failing, the system will immediately be repaired or replaced to original
design specifications. If the system cannot be repaired to perform its design function, other stormwater control
devices as allowed by NCAC 2H .1000 must be designed, approved and constructed.
6. Remove accumulated sediment from the infiltration system annually or when depth in the unit is reduced to
75%of the original design depth. The system shall be restored to the original design depth without over -
excavating. Over -excavating may cause the required water table separation to be reduced and may
compromise the ability of the system to perform as designed. Removed sediment shall be disposed of in an
appropriate manner and shall not be handled in a manner that will adversely impact water quality (i.e.
stockpiling near a stormwater treatment device or stream, etc.).
A benchmark shall be established in the infiltration system. The benchmark will document the original
design depth so that accurate sediment accumulation readings can be taken. The measuring device used to
determine the depth at the benchmark shall be such that it will give an accurate depth reading and not
readily penetrate into accumulated sediments.
When the depth at the benchmark reads see belothe accumulated sediment shall be removed
from the system.
DI1
5.35
ft
depth
D72
5.15
ft
depth
D13
5.15
ft
depth
Form SWU-107 Rev 3.99 Page 3 of 4
I acknowledge and agree by my signature below that I am responsible for maintaining the stormwater
collection system in accordance with the six maintenance procedures listed above. I agree to notify DWQ
of any problems with the system or prior to any changes to the system or responsible party.
Print Name and Title: Steve Mann, Vice President
Address:15 Causeway Drive, Ocean Isle Beach, NC 28469-0750
Phone: 910-5754-7 - 771.d n _ Date: 10/13/00
IVOte: The legally responsible party should not be a homeowners association unless nmre than 50% of the lots have been sold and a
resident of the subdivision has been named the president.
1, 22' r1Gn0.� WAW D4, "�At�Notary Public for the State of n Ul k UkD"k , County of
U NLMDWI Oe , do hereby certify that QED.O i) •mm"'e-) personally appeared before m��11e this �)
day of 0600 Fn d.o 0 0 , and acknowledge the due execution of the forgoing infiltration basin maintenance
requirements. Witness my hand and official seal,
�nr+ sr,�/////
'OLT:?p� .�rlt My connuission expires 0MD - 0�-')
9'A Boo �s
Pomt SWU-107 Rev 3.99 Page 4 of 4
�MCIQM&CREED
TO: NCDENR
127 Cardinal Drive Extension
Wilmington, NC 28405-3845
ATTENTION; Ms. Linda Lewis
nC.;t rVL;15
OCT 4
3 2000
0wV
\
LETTER OF TRANSMITTAL
OATE: October 13, 2000
PROJECT NO. 01566.0007 (40)
TASK NO' REST
RED Ocean Isle West Destination Resort
Section 2, Phase 3; Islander Resort
TRANSMITTAL NO TRANSMIT
PAGE 1 OF 1
WE ARE SENDING: ❑ Originals ® Prints ❑ Shop Drawings ❑ Samples
❑ Specifications ® Calculations ® Other -Application
Quantity
Drawing No.
Rev.
Description
Status
1
Cover Letter dated 10/12/00
1
Original
Stormwater Management Permit Application Form
G
2
Copies
Stormwater Management Permit Application Form
G
1
Original
Infiltration Trench Supplement
G
2
Copies
Infiltration Trench Supplement
G
2
Design Narrative and Supporting Calculations, Revised October 2000
G
2
CE101
Grading, Drainage, & Erosion Control Plan dated 6/7/00, rev. 10/10/00
G
2
CE501
Site & Erosion Control Details dated 6/7/00, revised 10/13/00
G
Issue Status Code: A. Preliminary B. Fabrication Only C. For Information D. Bid
E. Construction F. For Review & Comments G. For Approval H. See Remarks
Action Status Code: 1. No Exceptions Taken 2. Make Corrections Noted 3. Other
4. Amend & Resubmit 5. Rejected - See Remarks
REMARKS
243 N. FRONT ST, WILMINGTON, NC 28401 9101343-1048 FAX 9101251-8282
CC' D. Williamson w/ enclosures cKIM CREED, PA
S. Mann w/ enclosures
Herb McKim/Trans & letter
File Signed
Mark Arcuri, E
Project Engineer
S^\01566\0007\club aouse\10.mm\101300 NCOENR LindaL"is Trans.doc
DESIGN NARRATIVE
FOR
STORMWATER MANAGEMENT PERMIT
AND SUPPORTING CALCULATIONS
OCEAN ISLE WEST DESTINATION RESORT
SECTION 2, PHASE 3
ISLANDER RESORT
Ocean Isle Beach
Brunswick County, North Carolina
Prepared for:
North Carolina Coastal Developments, Inc.
15 Causeway Drive
Ocean Isle Beach, NC 28469-0750
(910) 575-7771
June 2000
Revised October 2000
McKim & Creed 01566-0007 (REST) (20)
jd,/3-00
Prepared by:
McKim & Creed, P.A.
243 North Front Street
Wilmington, NC 28401
S:\01566=0]\club house@0-tech\stormwaterdesignnarritivaaoc
:00"04 IL ( ,'s
OCT 113 2000
DWQ
PROD#
DESIGN NARRATIVE
1. GENERAL
The project site is located in the town of Ocean Isle, North Carolina. The site is
bounded on the north side by Ocean Isle West Boulevard (West Second Street). It is
bordered by residential lots to the east and west. The proposed lot size where the
beach club will reside is approximately 3.52 acres.
The intent of this project is to design and construct a new beach club, restaurant, pool,
and parking area for this tract of land. This is an application for a site specific storm
water permit under the general storm water permit SW8 990109.
2. EXISTING SITE
The existing site is approximately 3.52 acres in size and presently sand and
undisturbed. There are not wetlands present on site. There is no clearing and
grubbing necessary on this site.
3. PROPOSEDIMPROVEMENTS
The majority of the improvements are associated with the construction of the actual
building and parking lot area. Utility improvements include the installation of new water
service line and fire sprinkler line. There will be a sanitary sewer service. Both water
and sewer will tie-in to an existing public water and sewer main. Proposed storm water
catch basins and piping will be constructed for the parking lot area and infiltration
trenches will be constructed for storm water management purposes. See attached
calculations and drawing for more detail.
4. EROSION CONTROL CONSIDERATIONS
Erosion control considerations are integrally tied to the existing storm drain system. All
storm drain inlets will be protected with silt fence inlet protection to eliminate sediment
migration through the storm drain system. In addition, silt fencing will be located on the
low side of the affected areas which will not impede the flow of storm water. Any
proposed drainage swales will be properly lined with erosion control matting if
necessary. A temporary construction entrance will be located as close to the
entrance/exit point of the new work area.
5. MAINTENANCE CONSIDERATIONS
Contractors shall be responsible for periodic inspection and maintenance of all
indicated erosion control devices. In addition, inspection and any necessary
maintenance will be required immediately following any significant storm event. Catch
basin inlets will be used as pretreatment devices. Benchmark depths are noted on the
application supplement that will document when the pretreatment devices will need to
be cleaned out. Any measure that fails to function as intended shall be repaired
immediately. Upon completion of construction, the property owner shall be responsible
for site maintenance.
S'A015660007t luS houset20-teUWormwaterdesignnarritive do0
6. DESIGN APPROACH
Storm water treatment will be implemented through an underground infiltration trench
sized to store the required 11,439 cubic feet of storm water volume. Soil tests
performed by Land Management Group, Inc. on May 18, 2000 indicate that the
infiltration rate of the soil in this affected area is 14 in/hr. The design uses a safety
factor of 2.0 equating a rate of 7.0 in/hr. In addition this soils report indicates that the
seasonal high water table is roughly 3.7 feet above mean sea level. This report is
included in this submittal for your review. The designed infiltration trench will be
designed such that the trench will sit 2 feet higher than the seasonal high water table
(per NCDENR's Best Management Practices). The infiltration system will use 2113
linear feet of 15 inch perforated pipe surrounded with 4.7 ft. by 2.5 feet of #57 washed
stone in a filter fabric envelope. The total storage volume provided is 11,486 cubic feet,
more than the required 11,439 cubic feet. Storm water will enter the system through 3
grated inlets arranged in the parking lot. These inlets will be protected from silt and
sediment during the construction stage and until permanent vegetation is established.
Storm events in excess of the 1.5" storm will discharge through dedicated overflow
piping to a grassed swale of at least 50 feet in length, adjacent to and east of the
proposed building. The overflow water is separated from the first 1.5 inch by setting the
inverts of the overflow piping at elevation 8.2 (top of the trench) or higher. See the plan
for details.
SA01566\0007\club houset20-tech\slormwaterdesignnarritive. doc
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REQUIRED VOLUME TO TREAT FIRST 1.5 INCH = 11.439 CUBIC FEET IZ6gaI fZL�
Givens:
Stone Voids (void cf/total co
Pipe Length (ft)
Pipe Size (in)
trench width (ft)
trench height (ft)
Calculated Stuff:
Pipe Volume (cf)
Stone Volume (cf)
Total Volume (cf)
Trench Volume proportions
Drainage Area
DI1
29511
D12
26721
D13
41397
Totals
97629
0.4
2113
15
4.7
2.5
2592
8894
11486
o K-
Proportional Volume
3472
3144
4870
11486
/}rvA-L..rsiI S
C4:::- '3 VIZ C)
Hydrograph Summary Report
Page 1
Hyd.
No.
Hydrograph
type
(origin)
Peak
flow
(cfs)
Time
interval
(min)
Time to
peak
(min)
Volume
(cult)
Return
period
(yrs)
Inflow
hyd(s)
Maximum
elevation
(ft)
Maximum
storage
(cuft)
Hydrograph
description
1
Rational
3.42
1
10
2,050
10
----
------
------
DI1
2
Rational
3.46
1
10
2,077
10
----
------
------
DI2
3
Rational
5.39
1
10
3,234
10
----
------
------
DI3
4
Reservoir
0.00
1
20
0
10
1
7,16
2,0511
ROUTE 1
5
Reservoir
0.00
1
20
0
10
2
7.35
2,077
ROUTE 2
6
Reservoir
0.00
1
20
0
10
3
7.36
3,234
ROUTE 3
2of�
I tow
—o iL
No
-r:w
a �n
r
,
Proj. file: FINAL.GPW
OF file: WilmlDF.IDF
Run date: 10-12-2000
Hydrograph Report
Hyd. No. 1
DI1
Page 1
English
Hydrograph type
= Rational
Peak discharge =
3.42 cfs
Storm frequency
= 10 yrs �
Time interval =
1 min
Drainage area
= 0.7 ac
Runoff coeff. =
0.8
Intensity
= 6.30 in
Time of conc. (Tc) =
10 min
I-D-F Curve
= WIImIDF.IDF
Reced. limb factor =
1
Total Volume = 2,050 cuR
Hydrograph Discharge Table
Time -- Outflow
(min cfs)
1
0.34
2
0.68
3
1.03
4
1.37
5
1.71
6
2.05
7
2.39
8
2.73
9
3.08
10
3.4242 «
11
3.08
12
2.73
13
2.39
14
2.05
15
1.71
16
1.37
17
1.03
18
0.68
19
0.34
... End
Hydrograph
Report
Page 1
English
Hyd. No. 2
D12
Hydrograph type
= Rational
Peak discharge =
3.46 cfs
Storm frequency
= 10 yrs
Time interval =
1 min
Drainage area
= 0.6 ac
Runoff coeff. =
0.9
Intensity
= 6.30 in
Time of cone. (Tc) =
10 min
I-D-F Curve
= WIImIDF.IDF
Reced. limb factor =
1
Total
Volume = 2,077 tuft
Hydrograph Discharge
Table
Time -- Outflow
(min cfs)
1 0.35
2 0.69
3 1.04
4 1.38
5 1.73
6 2.08
7 2.42
8 2.77
9 3.12
10 3.46
11 3.12
12 2.77
13 2.42
14 2.08
15 1.73
16 1.38
17 1.04
18 0.69
19 0.35
... End
Hydrograph Report
Page 1
English
Hyd. No. 3
D13
Hydrograph type
= Rational
Peak discharge =
5.39 cfs
Storm frequency
= 10 yrs -
Time interval =
1 min
Drainage area
= 0.9 ac
Runoff coeff. =
0.9
Intensity
= 6.30 in
Time of conc. (Tc) =
10 min
I-D-F Curve
= WilmlDF.IDF
Reced. limb factor =
1
Total Volume = 3,234 cuft
Hydrograph Discharge Table
Time -- Outflow
(min cfs)
1
0.54
2
1.08
3
1.62
4
2.16
5
2.70
6
3.23
7
3.77
8
4.31
9
10
4.85
5.3939 «
11
4.85
12
4.31
13
3.77
14
3.23
15
2.70
16
2.16
17
1.62
18
1.08
19
0.54
End
r
Hydrograph Report
Hyd. No. 4
ROUTE 1
Hydrograph type = Reservoir
Storm frequency = 10 yrs
Inflow hyd. No. = 1
Max. Elevation = 7.18 ft
Storage Indication method used.
Hydrograph Discharge Table
Page 1
English
Peak discharge = 0.00 cfs o�vJ
Time interval = 1 min
Reservoir name = Percentage of DIi -i-o
Max. Storage = 2,050 cuft +reAA
Total Volume = 0 cult
Time
Inflow
Elevation
Clv A Clv B Clv C Clv D Wr A Wr B
Wr C Wr D Outflow
(min)
cfs
ft
cfs cfs cfs cfs cfs cfs
cfs cfs cfs
2
0.68
5.73
0.00 ----- ----- ----- ----- -----
----- ----- 0.00
3
1.03
5.77
0.00 ----- ----- ----- ----- -----
----- ----- 0.00
4
1.37
5.82
0.00 ----- ----- ----- ----- -----
----- ----- 0.00
5
1.71
5.88
0.00 ----- ----- ----- ----- -----
----- ----- 0.00
6
2.05
5.97
0.00 ----- ----- ----- ----- -----
----- ----- 0.00
7
2.39
6.06
0.00 ----- ----- -----
----- ----- 0.00
8
2.73
6.17
0.00 ----- ----- ----- ----- -----
----- ----- 0.00
9
3.08
6.30
0.00 ----- ----- ----- ----- -----
----- ----- 0.00
10
3.42 <<
6.44
0.00 ----- ----- ----- ----- -----
----- ----- 0.00
11
3.08
6.58
0.00 ----- ----- ----- ----- -----
----- ----- 0.00
12
2.73
6.70
0.00 ----- ----- ----- ----- -----
----- ----- 0.00
13
2.39
6.82
0.00 ----- ----- ----- ----- -----
----- ----- 0.00
14
2.05
6.91
0.00 ----- ----- ----- ----- -----
----- ----- 0.00
15
1.71
6.99
0.00 ----- ----- ----- ----- -----
----- ----- 0.00
16
1.37
7.06
0.00 ----- ----- ----- ----- -----
----- ----- 0.00
17
1.03
7.11
0.00 ----- ----- ----- ----- -----
----- ----- 0.00
18
0.68
7.15
0.00 ----- ----- ----- ----- -----
----- ----- 0.00
19
0.34
7.17
0.00 ----- ----- ----- ----- -----
----- ----- 0.00
20
0.00
7.18 <<
0.00 ----- ----- ----- ----- -----
----- ----- 0.00 <<
21
0.00
7.18 <<
0.00 ----- ----- ----- ----- -----
----- ----- 0.00 <<
22
0.00
7.18 <<
0.00 ----- ----- ----- ----- -----
----- ----- 0.00 <<
23
0.00
7.18 <<
0.00 ----- ----- ----- ----- -----
----- ----- 0.00 <<
24
0.00
7.18 <<
0.00 ----- ----- ----- ----- -----
----- ----- 0.00 <<
25
0.00
7.18 <<
0.00 ----- ----- ----- ----- -----
----- ----- 0.00 <<
26
0.00
7.18 <<
0.00 ----- ----- ----- ----- -----
----- ----- 0.00 <<
27
0.00
7.18 <<
0.00 ----- ----- ----- ----- -----
----- ----- 0.00 <<
28
0.00
7.18 <<
0.00 ----- ----- ----- ----- -----
----- ----- 0.00 <<
29
0.00
7.18 <<
0.00 ----- ----- ----- ----- -----
----- ----- 0.00 <<
30
0.00
7.18 <<
0.00 ----- ----- ----- ----- -----
----- ----- 0.00 <<
31
0.00
7.18 <<
0.00 ----- ----- ----- ----- -----
----- ----- 0.00 <<
32
0.00
7.18 <<
0.00 ----- ----- ----- ----- -----
----- ----- 0.00 <<
33
0.00
7.18 <<
0.00 ----- ----- ----- ----- -----
----- ----- 0.00 <<
34
0.00
7.18 <<
0.00 ----- ----- ----- ----- -----
----- ----- 0.00 <<
35
0.00
7.18 <<
0.00 ----- ----- ----- ----- -----
----- ----- 0.00 <<
36
0.00
7.18 <<
0.00 ----- ----- ----- ----- -----
----- ----- 0.00 <<
37
0.00
7.18 <<
0.00 ----- ----- ----- ----- -----
----- ----- 0.00 <<
Continues on next page...
v
Hydrograph Report
Page 1
Hyd. No. 5
ROUTE 2
Hydrograph type = Reservoir
Storm frequency = 10 yrs
Inflow hyd. No. = 2
Max. Elevation = 7.35 ft
Peak discharge =
Time interval =
Reservoir name =
Max. Storage =
English
t�
0.00 cfs c;,l
1 min
percentage of DSz b
2,077 cuft
Storage Indication method used.
Total Volume = 0 tuft
Hydrograph Discharge
Table
Time Inflow
Elevation
Clv A Clv B
Clv C Clv D Wr A Wr B Wr C
Wr D Outflow
(min) cfs
ft
cfs cfs
cfs cfs cfs cfs cfs
cfs cfs
2 0.69
5.73
0.00 -----
----- ----- ----- ----- -----
----- 0.00
3 1.04
5.77
0.00 -----
----- ----- ----- ----- -----
----- 0.00
4 1.38
5.83
0.00 -----
----- ----- ----- ----- -----
----- 0.00
5 1.73
5.91
0.00 -----
----- ----- ----- ----- -----
----- 0.00
6 2.08
6.00
0.00 -----
----- ----- ----- ----- -----
----- 0.00
7 2.42
6.10
0.00 -----
----- ----- ----- ----- -----
----- 0.00
8 2.77
6.23
0.00 -----
----- ----- ----- ----- -----
----- 0.00
9 3.12
6.37
0.00 -----
----- ----- ----- ----- -----
----- 0.00
10 3.46 <<
6.53
0.00
----- ----- ----- -----
----- 0.00
11 3.12
6.68
0.00 -----
----- ----- ----- ----- -----
----- 0.00
12 2.77
6.82
0.00 -----
----- ----- ----- ----- -----
----- 0.00
13 2.42
6.95
0.00 -----
----- ----- ----- ----- -----
----- 0.00
14 2.08
7.05
0.00 -----
----- ----- ----- ----- -----
----- 0.00
15 1.73
7.15
0.00 -----
----- ----- ----- ----- -----
----- 0.00
16 1.38
7.22
0.00 -----
----- ----- ----- -----
0.00
17 1.04
7.28
0.00
----- ----- ----- -----
----- 0.00
18 0.69
7.32
0.00
----- ----- -----
0.00
19 0.35
7.34
0.00 -----
----- ----- ----- ----- -----
----- 0.00
20 0.00
7.35 <<
0.00 -----
----- ----- ----- ----- -----
----- 0.00 <<
21 0.00
7.35 <<
0.00 -----
----- ----- ----- ----- -----
----- 0.00 <<
22 0.00
7.35 <<
0.00 -----
----- ----- ----- ----- -----
----- 0.00 <<
23 0.00
7.35 <<
0.00 -----
----- ----- ----- ----- -----
----- 0.00 <<
24 0.00
7.35 <<
0.00
- ----- ----- -----
0.00 <<
25 0.00
7.35 <<
0.00 -----
----- ----- ----- ----- -----
----- 0.00 <<
26 0.00
7.35 <<
0.00 -----
----- ----- ----- ----- -----
----- 0.00 <<
27 0.00
7.35 <<
0.00 -----
----- ----- ----- ----- -----
----- 0.00 <<
28 0.00
7.35 <<
0.00
----- ----- -----
0.00 <<
29 0.00
7.35 <<
0.00 -----
----- ----- ----- ----- -----
----- 0.00 <<
30 0.00
7.35 <<
0.00 -----
----- ----- ----- ----- -----
----- 0.00 <<
31 0.00
7.35 <<
0.00 -----
----- ----- ----- ----- -----
----- 0.00 <<
32 0.00
7.35 <<
0.00 -----
----- ----- ----- ----- -----
----- 0.00 <<
33 0.00
7.35 <<
0.00 -----
----- ----- ----- ----- -----
----- 0.00 <<
34 0.00
7.35 <<
0.00 -----
----- ----- ----- ----- -----
----- 0.00 <<
35 0.00
7.35 <<
0.00 -----
----- ----- ----- ----- -----
----- 0.00 <<
36 0.00
7.35 <<
0.00 -----
----- ----- ----- ----- -----
----- 0.00 <<
37 0.00
7.35 <<
0.00 -----
----- ----- -----
----- 0.00 <<
Continues on next page
y
Hydrograph Report
Page 1
English
Hyd. No. 6
ROUTE 3
No
Hydrograph type
= Reservoir
Peak discharge
= 0.00 cfs ovt,pU�
Storm frequency
= 10 yrs
Time interval
= 1 min
Inflow hyd. No.
= 3
Reservoir name
= Percentage D13 J-v
Max. Elevation
= 7.36 ft
Max. Storage
= 3,234 cuft +re
910ra9e indication method used.
Total Volume = 0 cuff
Hydrograph Discharge
Table
Time
Inflow
Elevation
Clv A Clv B Clv C Clv D Wr A
Wr B Wr C Wr D Outflow
(min)
cfs
ft
cfs cfs cfs cfs cfs
cfs cfs cfs cfs
2
1.08
5,73
MID ----- ----- ----- -----
----- ----- ----- 0.00
3
1.62
5,77
0.00 ----- ----- ----- -----
----- ----- ----- 0.00
4
2.16
5.83
0.00 ----- ----- ----- -----
----- ----- ----- 0,00
5
2.70
5,91
0.00 ----- ----- ----- -----
----- ---- ----- 0,00
6
3.23
6.00
0.00 ----- ----- ----- -----
----- ----- ----- 0.00
7
3.77
6.11
0.00 ----- ----- ----- -----
----- ----- ----- 0.00
8
4.31
6.23
0.00 ----- ----- ----- -----
----- ----- ----- 0.00
9
4.85
6.37
0.00 ----- ----- ----- -----
----- ----- ----- 0.00
10
5.39 «
6.53
0.00 ----- ----- ----- -----
----- ----- ----- 0.00
11
4.85
6.69
0.00 ----- ----- ----- -----
----- ----- ----- 0.00
12
4.31
6.83
0.00 ----- ----- ----- -----
----- ----- ----- 0.00
13
3.77
6.95
0.00 ----- ----- ----- -----
----- ----- ----- 0.00
14
3.23
7.06
0.00 ----- ----- ----- -----
----- ----- ----- 0.00
15
2.70
7.15
0.00 ----- ----- ----- -----
----- ----- ----- 0.00
16
2.16
Z23
0.00 ----- ----- ----- -----
----- ----- ----- 0.00
17
1.62
7.29
0.00 ----- ----- ----- -----
----- ----- ----- 0.00
18
1.08
7.33
0.00 ----- ----- ----- -----
----- ----- ----- 0.00
19
0.54
7.35
0.00 ----- ----- ----- -----
----- ----- ----- 0.00
20
0.00
7.36 <<
0.00 ----- -----
----- ----- ----- 0.00 <<
21
0.00
7.36 «
0.00 ----- ----- ----- -----
----- ----- ----- 0.00 <<
22
0.00
7.36 <<
0.00 ----- ----- ----- -----
----- ----- ----- 0.00 <<
23
0.00
7.36 <<
0.00 ----- ----- ----- -----
----- ----- ----- 0.00 <<
24
0.00
7.36 <<
0.00 ----- ----- ----- -----
----- ----- ----- 0.00 <<
25
0.00
7.36 <<
0.00 ----- ----- ----- -----
----- ----- ----- 0.00 <<
26
0.00
7.36 <<
0.00 ----- ----- ----- -----
----- ----- ----- 0.00 <<
27
0.00
7.36 <<
MID ----- ----- ----- -----
----- ----- ----- 0.00 <<
28
0.00
7.36 <<
0.00 ----- ----- ----- -----
----- ----- ----- 0.00 <<
29
0.00
7.36 <<
0.00 ----- ----- ----- -----
----- ----- ----- 0.00 <<
30
0.00
7.36 <<
0.00 - ----- -----
----- ----- ----- 0.00 <<
31
0.00
7.36 <<
0.00 ----- ----- ----- -----
----- ----- ----- 0.00 <<
32
0.00
7.36 <<
0.00 ----- ----- ----- -----
----- ----- ----- 0.00 <<
33
0.00
7.36 <<
0.00 ----- ----- ----- -----
----- ----- ----- 0.00 <<
34
0.00
7.36 <<
0.00 ----- ----- ----- -----
----- ----- ----- 0.00 <<
35
0.00
7.36 <<
0.00 ----- ----- ----- -----
----- ----- ----- 0.00 <<
36
0.00
7.36 <<
0.00 ----- ----- ----- -----
----- ----- ----- 0.00 <<
37
0.00
7.36 <<
0.00 ----- ----- ----- -----
----- ----- ----- 0.00 <<
Continues on next page...
Reservoir Report
Reservoir No. 1 - Percentage of DI1 Trench
Pond Data
Bottom area = 1388.0 sgft
Stage / Storage Table
Stage
Elevation
ft
ft
0.00
5.70
0.25
5.95
0.50
6.20
0.75
6.45
1.00
6.70
1.25
6.95
1.50
7.20
1.75
7.45
2.00
7.70
2.25
7.95
2.50
8.20
Side slope = 0.0:1 Bottom elev. = 5.70 ft
Contour area Incr. Storage Total storage
sgft cuft cuft
1,388
0
0
1,388
347
347
1,388
347
694
1,388
347
1,041
1,388
347
1,388
1,388
347
1,735
1,388
347
2,082
1,388
347
2,429
1,388
347
2,776
1,388
347
3,123
1,388
347
3,470
Page 1
English
Depth = 2.50 ft
N mlo �;ET lAn
t,%KE 'POND CT`1'P),
-trS 1. 7, .,j G
R-r�1G1 � V pill M�,
Culvert / Orifice Structures
Weir Structures
[A]
[B]
[C]
[D]
[A]
[B]
[C]
[D]
Rise in =
0.0
0.0
0.0
0.0
Crest Len ft =
1000.00 0.00
0.00
0.00
Span in =
0.0
0.0
0.0
0.0
Crest El. ft =
8.20
0.00
0.00
0.00
No. Barrels =
1
0
0
0
Weir Coeff. =
3.33
0.00
0.00
0.00
Invert El. ft =
5.70
0.00
0.00
0.00
Eqn. Exp. =
1.50
0.00
0.00
0.00
Length ft =
40.0
0.0
0.0
0.0
Multi -Stage =
No
No
No
No
Slope % =
0.00
0.00
0.00
0.00
N-Value =
.013
.013
.000
.000
Orif. Coeff. =
0.60
0.60
0.00
0.00
Multi -Stage =
-----
No
No
No
Tailwater Elevation
=
0.00 ft
Stage /Storage
/Discharge
Table
Note'. All outflows
have been analyzed under inlet and
outlet control.
Stage Storage
Elevation Clv A
Clv B Clv C
Clv D Wr A
Wr B
Wr C
Wr D
Discharge
ft cuft
ft
cfs
cfs cfs
cfs cfs
cfs
cfs
cfs
cfs
0.00 0
5.70
0.00
--- ---
--- 0.00
---
---
---
0.00
0.25 347
5.95
0.00
--- ---
--- 0.00
---
---
---
0.00
0.50 694
6.20
0.00
--- ---
--- 0.00
---
---
---
0.00
0.75 1,041
6.45
0.00
--- ---
--- 0.00
---
---
---
0.00
1.00 1,388
6.70
0.00
--- ---
--- 0.00
---
---
---
0.00
1.25 1,735
6.95
0.00
--- ---
--- 0.00
---
---
---
0.00
1.50 2,082
7.20
0.00
--- ---
--- 0.00
---
---
---
0.00
1.75 2,429
7.45
0.00
--- ---
--- 0.00
---
---
---
0.00
2.00 2,776
7.70
0.00
--- ---
--- 0.00
---
---
---
0.00
2.25 3,123
7.95
0.00
--- ---
--- 0.00
---
---
---
0.00
2.50 3,470
8.20
0.00
--- ---
--- 0.00
---
---
---
0.00
Reservoir Report
Page 1
Reservoir No. 2 - percentage of D12 Trench English
Pond Data
Bottom area = 1257.5 sgft Side slope = 0.0:1 Bottom elev. = 5.70 ft Depth = 2.50 ft
Stage / Storage Table
Stage
Elevation
Contour area
Incr. Storage
Total storage
ft
ft
sgft
cult
cuft
0.00
5.70yC
1,258
0
0
0.25
5.95
1,258
314
314
0.50
6.20
1,258
314
629
0.75
6.45
1,258
314
943
1.00
6.70
1,258
314
1,258
1.25
6.95
1,258
314
1,572
1.50
7.20
1,258
314
1,886
1,75
7.45
1,258
314
2,201
2.00
2.25
7.70
7.95
1,258
1,258
314
314
2,515
2,829 -I-��Z �o27i v/-1
2.50
8.20
1,258
314
3, i 44-K
Culvert / Orifice Structures
Weir Structures
[A]
[B]
[C]
[D]
[A]
[B]
[C]
[D]
Rise in =
0.0
0.0
0.0
0.0
Crest Len ft =
300.00
0.00
0.00
0.00
Span in =
0.0
0.0
0.0
0.0
Crest El. ft =
8.20
0.00
0.00
0.00
No. Barrels =
1
0
0
0
Weir Coeff. =
3.33
0.00
0.00
0.00
Invert El. ft =
5.70
0.00
0.00
0.00
Eqn. Exp. =
1.50
0.00
0.00
0.00
Length ft =
40.0
0.0
0.0
0.0
Multi -Stage =
No
No
No
No
Slope % =
0.00
0.00
0.00
0.00
N-Value =
.013
.000
.000
.000
Orif. Coeff. =
0.60
0.00
0.00
0.00
Multi -Stage =
-----
No
No
No
Tailwater Elevation
=
0.00 ft
Stage / Storage / Discharge
Table
Note'. All outflows
have been analyzed under
inlet and
outlet control.
Stage Storage
Elevation Clv A
Clv B Clv C
Clv D Wr A
Wr B
Wr C
Wr D
Discharge
ft cuft
ft
cfs
cfs cfs
cfs cfs
cfs
cfs
cfs
cfs
0.00 0
5.70
0.00
--- ---
--- 0.00
---
---
---
0.00
0.25 314
5.95
0.00
--- ---
--- 0.00
---
---
---
0.00
0.50 629
6.20
0.00
--- ---
--- 0.00
---
---
---
0.00
0.75 943
6.45
0.00
--- ---
--- 0.00
---
---
---
0.00
1.00 1,258
6.70
0.00
--- ---
--- 0.00
---
---
---
0.00
1.25 1,572
6.95
0.00
--- ---
--- 0.00
---
---
---
0.00
1.50 1,886
7.20
0.00
--- ---
--- 0.00
---
---
---
0.00
1.75 2,201
7.45
0.00
--- ---
--- 0.00
---
---
---
0.00
2.00 2,515
7.70
0.00
--- ---
--- 0.00
---
---
---
0.00
2.25 2,829
7.95
0.00
--- ---
--- 0.00
---
---
---
0.00
2.50 3,144
8.20
0.00
--- ---
--- 0.00
---
---
---
0.00
Reservoir Report
Page 1
Reservoir No. 3 - Percentage DI3 Trench English
Pond Data
Bottom area
= 1948.0 sgft Side slope
= 0.0 1
Bottom elev. = 5 70 ft
Depth =
2.50 ft
Stage I Storage
Table
Stage
Elevation
Contour area
Incr.
Storage Total storage
ft
ft
sgft
tuft
Cuft
0,00
5.70
1,948
0
0
0.25
5.95
1,948
487
487
0,50
6,20
1.948
487
974
0.75
6,45
1,948
487
1,461
1.00
6.70
1.948
487
1.948
1.25
6,95
1,948
487
2,435
1.50
T20
1,948
487
2,922
1.75
2,00
7,45
7.70
1,948
1,948
487
487
3,409
3,896
2.25
2,50
7.95
1,948
1,948
487
4,383
8.20
487
4,870 -
���
��� l,(
Culvert I Orifice
Structures
Weir Structures
[A]
[B] [C]
[D]
[A]
[B]
[C]
[D]
Rise in
= 0.0
0.0 0.0
0.0
Crest Len ft = 30000
0.00
0,00
0,00
Span in
= 0.0
0.0 0.0
0.0
Crest El. ft = 8.20
0.00
0.00
0.00
No. Barrels
= 1
0 0
0
Weir Coeff. = 3.33
0.00
0.00
0.00
Invert El. ft
= 5.70
0,00 0.00
0.00
Eqn. Exp. = 1.50
0.00
0.00
0,00
Length ft
= 40.0
0.0 0.0
0.0
Multi -Stage = No
No
No
No
Slope %
= 0.00
0.00 0.00
0.00
N-Value
= .013
.000 .000
.000
Orif. Coeff.
= 0.60
0.00 0,00
0.00
Multi -Stage
= -----
No No
No
Tailwater Elevation = 0,00
ft
Stage / Storage / Discharge Table
Note'. All ou0lows have been
analyzed under Inlet and
outlet control.
Stage Storage
Elevation
Clv A Clv B
Clv C Clv D Wr A Wr B
Wr C
Wr D
Discharge
ft tuft
ft
cfs cfs
cfs
cfs cfs cfs
cfs
cfs
cfs
0.00 0
5.70
0.00 ---
---
--- 0.00 ---
---
---
0.00
0.25 487
5.95
0.00 ---
---
--- 0.00 ---
---
---
0.00
0.50 974
6.20
0.00 ---
---
--- 0.00 ---
---
---
0.00
0.75 1,461
6.45
0.00 ---
---
--- 0.00 ---
---
---
0.00
1.00 1,948
6.70
0.00 ---
---
--- 0.00 ---
---
---
0.00
1.25 2,435
6.95
0.00 ---
---
--- 0.00 ---
---
---
0.00
1.50 2,922
7.20
0.00 ---
---
--- 0.00 ---
---
---
0.00
1.75 3,409
7.45
0.00 ---
---
--- 0.00 ---
---
---
0.00
2.00 3,896
7.70
0.00 ---
---
--- 0.00 ---
---
---
0.00
2.25 4,383
7.95
0.00 ---
---
--- 0.00 ---
---
---
0.00
2.50 4,870
8.20
0.00 ---
---
--- 0.00 ---
---
---
0.00
v,1V . KUV :FCC: REED
October 12, 2000
Ms. Linda Lewis
NCDENR
127 Cardinal Drive Extension
Wilmington, NC 28405
RE: Ocean Isle West Destination Resort; Section 2, Phase 3
Islander Resort
DWQ Stormwater Project # SW8 000638
Dear Linda:
01566-0007 (REST) (10)
On behalf of our client, North Carolina Coastal Developments, Inc., I am writing in response to
your comment letter to Mark Magrath, PE, dated September 21, 2000. We appreciate your
comments and suggestions.
As you know, Mark Magrath previously did the storm water design on this project. Based on
workload at our firm, I have taken over to help him out. As you will see, the design is now by
me.
Since you last corresponded with Mark Magrath, the developer has required a reconfiguring of
the parking layout. This affects the drainage area, as well as the impervious percentage. Also,
we have added the overflow piping to the drainage system. Based on these changes, I have
revised the drainage calculations previously completed by Mark Magrath. The calculations
follow the same order and layout. The additions are a data spreadsheet and overflow
calculations at the end.
Below are our responses to the items you mentioned in the letter to Mark Magrath.
The vegetative filter is now shown as 50 feet long on the detail sheet. Also, it is shown
as 50 feet long on the plan.
The application has been revised as requested.
Agreeably, the bypass piping will aid in the lifespan of the infiltration system. The newly
designed system accepts rainfall into 3 inlets. Overflow piping is provided in each of
those three inlets at inverts equal or greater than the top of the trench (now 8.2 EL).
The overflow pipes are routed in a separate alignment to a common storm drain
manhole dedicated only for overflow, and then out to the grassed lined treatment Swale.
As a side note, the swale has been moved to the east side of the building. There is
more room for it there. The 10-year design storm does not totally fill the infiltration
trench. Therefore, there is no overflow for the design storm. However, a combination of
8 and 10 inch High Density Polyethylene (HDPE) overflow pipes and storm drain
manholes are shown for those storm events that will fill the trenches. Please see the
plan.
The overflow elevation is now 8.2 for the system. This is shown correctly on the plans
and the supplement.
5:\015661 7Uub housoM-commU0.12-0 lltr to linda le is Eoc
243 N. FRONT ST., WILMINGTON, NORTH CAROLINA 28401
TEL 910.343.1048 FAX 910.251.8282 www.mckimcreed.com
AA000]00]
Ms. Linda Lewis
October 12, 2000
Page 2 of 2
As always, we appreciate your review and comments. If you have any questions, please do not
hesitate to call (910-343-1048).
Sincerely,
McKKIIM & CREED, P.A.
Mark T. Arcuri
Project Engineer
fryer r/,17R
cc: Steve Mann
Herb McKim
file
59015660007\club house\10-comm\10-12-00lftr to Ilntla lewis tloc v McKW & CREED
* * * COMMUNICATION RESULT REPORT ( SEP.21.2000 12:43PM ) * * *
P. 1
FILE MODE
229 MEMORY TX
OPTION
REASON FOR ERROR
E-3) NONANSWERUP R LINE FAIL
TTI NCDENR WIRO
ADDRESS (GROUP) RESULT PAGE
------------------------------------------------------
8-9192338031
E-2) BUSY
E-4) NO FACSIMILE CONNECTION
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
Wilmington Regional Office
James B. Hunt, Governor
FAX COVER SHEET
Date: September 21, 2000
To: Mark McGrath, P.E.
Company: McKim and Creed Engineers
FAX #: 919-233.8031
Bill )dolman, Secretary
No. of Pages: 2/J�/
From: Linda Lewis
Water Quality Section - Stormwater
FAX #: 910-350-2004
Phone #: 910-395-3900
DWQ Stormwater Project #SW8 000638
Project Name: Ocean Isle West Destination Resort, Phase II, Section 3
MESSAGE:
The vegetated filter must be at least 50' long for SA waters. Please revise the level spreader detail
on sheet 2, which currently shows only 30'.
The agent authorization in Section'VH of the application is where the applicant writes in who the
State will be dealing with regarding questions about the stormwater application on his/her behalf,
The engineering firm's name and address is generally provided as the submittal agent. The
application previously submitted on June 23, 2000, and returned to you, had McKim and Creed
specified as the authorized agent.
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
Wilmington Regional Office
,lames B. Hunt, Governor
FAX COVER SHEET
Date: September 21, 2000
To: Mark McGrath, P.E.
Company: McKim and Creed Engineers
FAX #: 919-233-8031
Bill Holman, Secretary
No. of Pages: 2
From: Linda Lewis
Water Quality Section - Stormwater
FAX #: 910-350-2004
Phone #: 910-395-3900
DWQ Stormwater Project #SW8 000638
Project Name: Ocean Isle West Destination Resort, Phase II, Section 3
MESSAGE:
The vegetated filter must be at least 50' long for SA waters. Please revise the level spreader detail
on sheet 2, which currently shows only 30'.
The agent authorization in Section V11 of the application is where the applicant writes in who the
State will be dealing with regarding questions about the stonnwater application on his/her behalf.
The engineering firm's name and address is generally provided as the submittal agent. The
application previously submitted on ,tune 23, 2000, and returned to you, had McKim and Creed
specified as the authorized agent.
Thanks for clearing up the piping length vs. trench length confusion.
The requirement to provide a bypass isn't a question of flood prevention. The point of'requiring that
the system be offline is to provide a longer life for the infiltration system. By treating runoff that isn't
required to be treated, the filter media becomes clogged sooner, shortening the useable life of the
system and costing the owner more money due to the more frequent maintenance. The upfront cost
of adding appropriate bypass piping is more than offset by the increased useable life of the system.
As previously requested, please provide a bypass system that will truly make the system an offline
system and bypass the excess design storm.
The bottom of the trench is indicated as elevation 5.7 and the trench height is 2.25', which means the
overflows should be set at 7.95, but the supplement and plans show an overflow at 7.85. Please
revise and correct.
S:\WQS\STORM WA7\ADDINPO\000638.SEP
127 Cardinal Drive Extension, Wilmington, NC 28405-3845 'Telephone (910) 395-3900 FAX (910) 350-2004
An Equal Opportunity Affirmative Action Employer
OVERFLOW STRUCTURE
GRATE ELEV. = 9.6
CATCH BASIN
n/ie/ao
DATE
GROUT
k W 1�Gy
in
o°°8 a 8°oeoe� �g oIo�
01 51
15" PERF. CORRUGATED
' POLYETHYLENE PIPE (HIGH DENSITY)
#57 WASHED STONE
�-1SUMP BELOW INVERTS OF PIPE
OVERFLOW STRUCTURE
AT END OF SYSTEM
GRATE ELEVAPOI
SEE GRADING &
CATCH BASIN
SUMP BELOW INVERTS
TYPICAL SECTION
INF9LTRAION SYSTE—h
NOT TO SCALE
�5625 Dillard Dr., Suite 117,
Phone: (919)233-8091, Fa'
Cary, North Carolina 27511
AA0002667
Internet Site: http:
v,MCKIM&CREED
TO: NCDENR
Wilmington Regional Office
127 Cardinal Drive Extension
Wilmington, NC 28401
ATTENTION: Ms. Linda Lewis
LETTER OF TRANSMITTAL
gust 18, 2000
01566-0002
E
TASK NO'. REST
RE: Ocean Isle West Destination Resort
Section 2, Phase 3
Stormwater Mgmt. Plan Re -Submittal
TRANSMITTAL NO
PAGE OF
WE ARE SENDING: ® Originals x Prints ❑ Shop Drawings ❑ Samples
❑ Specifications ® Calculations
Quantity
Drawing No.
Rev.
Description
Status
1 original
& 1 copy
Revised Stormwater Management Permit Application Form SWU-101
F
1 copy
Revised Underground Infiltration Trench Supplement Form SWU-107
F
2 copies
Sealed 8/18/00
Revised Grading, Drainage & Erosion Control Plan & Detail Sheet
F
2 copies
Revised Infiltration Trench Calculations
F
1 orig.
Response letter to Linda Lewis dated 8/18/00
F
1 copy
Revised Boring Map
F
DWQ
Issue Status Code: A. Preliminary B. Fabrication Only C. For Information D. Bid
E. Construction F. For Review & Comments G. For Approval H. See Remarks
Action Status Code: 1. No Exceptions Taken 2. Make Corrections Noted 3. Other
4. Amend & Resubmit 5. Rejected - See Remarks
REMARKS: Linda, Attached are the above referenced items per your comment letter dated 7/26/00.
Per your letter I have only resubmitted necessary items that needed revisions. We look forward to hearing
from you in the near future. Thank you.
5825 DILLARD DRIVE, SUITE 117, CARY, NO 27511 (919) 233-8091 FAX (919) 233-8031
cc: Steve Mann- North Carolina Coastal McKIM & CREED ENGINEERS, PA
Developments, Inc.
N�t�k N�,r�r�ti
Signed
Mark J Magrath, P.E.
S115e510Do2I10-Comm\Tr821001 indalewis. doc
v MCIQM&CREED
v
August 18, 2000 M&C 01566-0003(10)
Ms. Linda Lewis
NCDENR Wilmington Regional Office
127 Cardinal Drive Extension
Wilmington, North Carolina 28401
RE: Ocean Isle West Destination Resort, Section 2, Phase 3
Stormwater Project No. SW8 000638
Dear Linda:
AUG 2 4 2000
PROJ # 5(,c D'FCWC03g
The following letter is in response to your comment letter dated July 26, 2000 for the above
referenced site.
Comment 1
A more detailed vicinity map is now indicated on the drawings.
Comment 2
The drawings now reflect a flow spreader device at the flared end section just downstream of
the overflow structure. The vegetated filter is downstream of the flow spreader. The grassed
Swale stops well within 50' of the Mean High Water line.
Comment 3
Dimensions on the proposed building, walks, parking spaces, drives, and pool deck area, etc.
The pool deck area is timber treated wood decking.
Comment 4
The boring map is now accurate with the existing site boundary. The two (2) boring locations
are indicated on the map. The map is much clearer to read.
Comment 5
The proposed underground infiltration system captures and infiltrates the runoff from the first
1.5 inches of rainfall. The peak storms are flushed through the system and outlet at the
overflow structure en route to the flow spreader device. There are adequate amount of catch
basins to support the peak runoff and the time of concentration is short so that the peak
storms will flush through the system hence not flooding the system.
Comment 6
Existing and proposed contours, as well as, spot elevations are added to the legend. Spot
elevations are for T/P (Top of Pavement) and T/G (Top of Grade) for all pervious surfaces.
5625 DILLARD DR., SUITE 117, CARY, NORTH CAROLINA 27511
5\1566OW2\10-Commmmind.1~w W17Wtl
T,LM9.233.8091 FAx919.233.8031 www.mcklmcreed.com
AA0002667
Comment 7
There were already plenty of existing of spots and contour lines indicated on the plan. I did add
more top of grade and top of pavement spots to the plan. The contour lines on the plan clearly
indicate the directional flow of water towards the inlets.
Comment 8
The roof drainage exits the building at the top right corner and enters the system at a proposed
catch basin.
Comment 9
A 1 foot in depth sump was added to the catch basins on the detail sheet to allow
pretreatment.
Comment 10
Observation well is not needed. Periodic inspection of the catch basins and sump cleanout will
occur.
Comment 11
Per the rules, all built upon areas on the project will be treated. The building rooftop has been
added to the calculations and is labeled on the drawing as Ta_2. The pool deck is not covered
and is slatted timber treated decking.
Comment 12
The pipe length that is reflected in my calculations is representative of exactly how much
piping is shown on my design. There is no pipe inside the catch basins hence an extra 2' on
each side is not needed to be added or recalculated. The trench length is exactly the same
length as the pipe length because there is no extra pipe in the catch basin structures.
Comment 13
The volume calculation was readjusted to reflect accurate area of a 15" pipe. The revised
calculations will reflect this change. The system provides more than adequate storage.
I will remain optimistic that this is the final comment letter prior to an approval letter. Please
call me if you have any questions or comments concerning this submittal. Thank you and I
look forward to hearing from you in the near future.
Very truly,
Mc IM & CREED, P.A.
U P. E.
ark J. Jagrath,
Project Engineer
cc: Mark Arcuri, P.E. — MCE
Enclosures
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RECEIVED �<
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SW FOyo & 3 0 A ^H
�UFKW&� BORING MAP
M25 ORION Dr., ail. 117, RIAq. I
Rnms (919)233-MI, F..: (919)23 W31
Cary North Carolina OCEAN ISLE WEST DESTINATION RESORT 1
State of North Carolina
Department of Environment
and Natural Resources
Wilmington Regional Office
James B. Hunt, Jr., Governor
Bill Holman, Secretary
Division of Water Quality
July 26, 2000
Mr. Steve Mann, Vice President
North Carolina Coastal Developments, Inc.
15 Causeway Drive
Ocean Isle Beach, NC 28469-0750
Subject: ACKNOWLEDGMENT OF RECEIPT AND
REQUEST FOR ADDITIONAL INFORMATION
Stormwater Project No. SW8 000638
Ocean Isle West Destination Resort Sectopm 2, Phase 3
Brunswick County
Dear Mr. Mann:
The Wilmington Regional Office received a Stormwater Management Permit Application for Ocean
Isle West Destination Resort Sectopm 2, Phase 3 on June 23, 2000. A preliminary review of that information
has determined that the application is not complete. The following information is needed to continue the
stormwater review:
Please provide a more detailed vicinity map. Please add major roads, such as US 17 and the
nearest major intersection, such as 179 and SR 1184.
The vegetated filter and the grassed outlet Swale are two different things. Please refer to the
enclosed vegetated filter detail. The filter is a flat grassed area with a flow spreader mechanism.
Please detail accurately. Include all pertinent inverts and elevations, flow spreader mechanism,
grass type to be planted, etc. Please do not construct an open ditch to surface waters. The
grassed swale after the filter must stop at least 50' from Mean High Water, and the runoff must
sheet flow into the waterway. Direct outlets to SA waters are prohibited.
3. Please provide dimensions for the buildings, walks, parking, drives, pool area, etc. Please label
all wood deck areas and all concrete areas.
4. 1 cannot correlate the boring map provided with the site. It doesn't even look like the same site.
5. The rules require infiltration to be an offline system, which means that the excess design storm
entering the system is diverted around the system before it gets into the system. The proposed
design offers a bypass at one location; after the runoff is already in the system. Each inlet should
have a bypass line set at the overflow elevation, which then directs the runoff to the vegetated
filter. The bypass line can be designed to sit on top of the trench or outside the trench area, and
bypass pipes from the other inlets can be connected to it.
6. Please add existing and proposed contours and spot elevations to the legend.
Please add sufficient proposed spot elevations and contours to indicate how the runoff will be
collected and directed into the system.
Please show the roof drainage and how/where it connects into the system.
127 Cardinal Dr. Ext., Wilmington, North Carolina 28405 Telephone 910-395-3900 FAX 910-350-2004
An Equal Opportunity Affirmative Action EmDloyer 50 % recycled/10"/,, post -consumer paver
Mr. Mann
July 26, 2000
Stormwater Project No. SW8 000638
9. A pretreatment device is required prior to entering the infiltration system. The grassed swale for
the overflow is not pretreatment. For this type of collection system, it is best to specify that a
sump be placed at the bottom of the catch basins. You can then specify the depth at which the
catch basins will be cleaned out on the supplement form in the O & M area.
10. Regarding item "so on the supplement, the observation well requirement has more to do with
keeping an eye on the water table than on silt buildup. For this project, an observation well will
not be needed.
11. Please add the building, pool deck (if covered or concrete), and sidewalk impervious cover to
the application, in the provided boxes. If the 71,438 currently shown does not include those
areas, you will need to recalculate the volume and check the proposed trench for capacity. The
rules require that the runoff from all built -upon area on the project be treated.
12. The trench length is less than the pipe length. The trench overlaps at the inlets by 2' on each
side, therefore, those trenches will be 4' shorter than the pipe.
13. The volume in the pipe is calculated by simply finding the area of the pipe and multiplying by
the length of pipe. My number comes up as 2,228 cubic feet, not 3,565. I calculate the area of
a 15" pipe as 1.227 ftz. Please check and revise as needed. As proposed, the system does not
provide enough storage.
Please note that this request for additional information is in response to a preliminary review. The
requested information should be received by this Office prior to August 26, 2000, or the application will be
returned as incomplete. The return of a project will necessitate resubmittal of all required items, including the
application fee.
If you need additional time to submit the information, please mail or fax your request for a time
extension to the Division at the address and fax number at the bottom of this letter. The request must indicate
the date by which you expect to submit the required information. The Division is allowed 90 days from
the receipt of a completed application to issue the permit.
The construction of any impervious surfaces, other than a construction entrance under an approved
Sedimentation Erosion Control Plan, is a violation ofNCGS 143-215.1 and is subject to enforcement action
pursuant to NCGS 143-215.6A.
Please reference the State assigned project number on all correspondence. Any original documents that
need to be revised have been sent to the engineer or agent. All original documents must be returned or new
originals must be provided. Copies are not acceptable. If you have any questions concerning this matter please
feel free to call me at (910) 395-3900.
Sincerely,
Linda Lewis
Environmental Engineer
RSS/arl: S:\WQS\STORMWAT\ADDINFO\000638.JUL
cc: Linda Lewis
Mark Magrath, P.E.
127 Cardinal Dr. Ext., Wilmington, North Carolina 28405 Telephone 910-395-3900 FAX 910-350-2004
An Equal Opportunity Affirmative Action Employer 50 % recycled/10°/ post -consumer paper
JUN
I TO: NCDENR LYr--1
Wilmington Regional Office
127 Cardinal Drive Extension
Wilmington, NC 28401
ATTENTION: Ms. Linda Lewis
WE ARE SENDING: ❑ Originals
M Specifications
t N/ LLETITER OF TRANSMITTAL
D4 'UU0June18, 2000
P '„RQ_EUra 01566-0002
l• iOcean
TASK No REST
RE:
Isle West Destination Resort
Section 2, Phase 3
Stormwater Mangement Plan Submittal
TRANSMITTAL NO:
PAGE OF
❑x Prints ❑ Shop Drawings ❑ Samples
❑ Calculations ❑x Other - Narrative
Quantity
Drawing No.
Rev.
Description
Status
1 original
& 1 copy
Stormwater Management Permit Application Form SWU-101
F
1 copy
Underground Infiltration Trench Supplement Form SWU-107
F
2 copies
Sealed 6/8/00
Design Narrative and Specifications
F
2 copies
Sealed 6/8/00
Grading, Drainage & Erosion Control Plan & Detail Sheet
F
1 copy
Existing CAMA Permit #154-98
F
1
$420.00 Check RECEIVED
F
Issue Status Code: A. Preliminary B. Fabrication Only C. For Information D. Bid
E. Construction F. For Review & Comments G. For Approval H. See Remarks
Action Status Code: 1. No Exceptions Taken 2. Make Corrections Noted 3. Other
4. Amend & Resubmit 5. Rejected - See Remarks
REMARKS: Attached are the above referenced documents for you review. Please contact me if you have
any comments. Thank you. -0 ( W TV R.'
JUN 2 0 2000
DWQ
PROJ # 5625 DILLARD DRIVE, SUITE 117, CARY, NC 27511 (919) 233-8091 FAX (919) 233-8031
cc: Steve Mann- North Carolina Coastal McKIM & CREED ENGINEERS, PA
Developments, Inc. p
KJEW-
{
Signed i
NI I4Mark J. Magrath, P. .
S-..\1566\0002\10-Comm\Tr608001indalewis,doc
i
Al Op" J%x 2522
906..g1on, AWA Viaw4w 28402
3el 910-452-0001
9�.w s.n.
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May 18, 2000
Mark Arcuri, P.E.
McKIM & CREED
243 N Front Street
Wilmington, NC 28401
Reference: Soil evaluation for stormwater for the Ocean Isle West Resort.
Dear Mr. Arcuri,
Ade f4
.Ta.9'.h
3805 9(4A&K& jyronr<e
%6nmy6n, M 28403
Earlier today, Land Management Group, Inc completed the soil characterization for
stormwater infiltration at the nine locations that you had requested. The following is a report of
my findings with respect to soil profile description, depth to seasonal high water table, and soil
infiltration rate. In addition to these nine borings, Land Management Group, Inc. has performed
extensive studies of this site with bore holes, pits, monitoring wells, and pump -out tests. I am
enclosing a copy of that report dated September 22, 1998 for your review.
Please do not hesitate to contact Craig Turner or myself if you have any questions about
either today's report or the 1998 study.
Sincerely,
John P Williams,
NC Licensed Soil Scientist
License #1113
attachments
RECEIVED
JUN 2 3 2000
dCXXo38
PROJ #
Ocean Isle West Resort
Ocean Isle Beach, NC
May 18, 2000
Bore hole locations as staked by Thompkins Land Surveying
Bore
Infilt. Estimated High Observed
Hole 4
Description
Rate
Watertable Water
BHI
04" Mixed fill, S/SCL, wood, 2.5Y4/2
—lin/hr
28" 42"
4-28" Sand, single grained, 2.5Y6/3
14-24 in/hr
28-36" Sand, single grained, 2.5Y6/2,7/3
14-24 in/hr
36-60" Sand, single grtained, 2.5Y6/2,7/2
14-24 in/hr
131-12
O-12" Clean Sand fill, 2.5Y6/4
14-24 in/hr
30" 44"
12-15" Sand, single grained, 2.5Y4/2
14-24 in/hr
15-30" Sand, single grained, 2.5Y6/3
14-24 in/hr
30-42" Sand, single grained, 2.5Y5/2,6/2
14-24 in/hr
42-60" Sand, single grained, 2.5Y7/1,6/8
14-24 in/hr
BH3
0-6" Clean Sand fill, 2.5Y4/2
14-24 in/hr
24" 32"
6-24" Clean Sand fill, 2.5Y6/4
14-24 iMir
24-36" Clean Sand Fill, N5/1
14-24 in/hr
36-40" Decomposed marsh mat w/S, 5GY5/1
14-24 in/hr
40-60" Sand, single grained, IOGYS/1
14-24 in/hr
BH4
0-32" Clean Sand fill, 2.5Y6/3
14-24 in/hr
32" 43"
32-42" Clean Sand fill, 2.5Y6/2
14-24 in/hr
42-48" Sand/Loamy Sand, 5GY6/1
14-24 4Vhr
48-60" Sand/ LS, single grained, I OGY6/1
14-24 in/hr
BH5
0-28" Clean Sand fill, 2.5Y6/3,6/4
14-24 in/hr
28" 40"
28-36" Clean Sand fill, 2.5Y6/3,6/2
14-24 in/hr
36-40" Decomposed marsh mat w/S, 5GY6/1 14-24 in/hr
40-60" Sand, single grained, 10GY6/1
14-24 in/hr
131-16
0-10" Clean Sand fill, 2.5Y6/3,6/2
14-24 in/hr
10" 24"
10-24" Decomposed marsh mat w/LS, 5GY5/1 14-24 in/hr
24-60" S/LS, few roots, single grained, 1 OGY5/1 14-24 in/hr
BH7 0-18" Clean Sand fill, 2.5Y6/3 14-24 in/hr
18-24" Clean Sand fill, N5/1 14-24 in/hr
24-30" Decomposed marsh mat w/LS, 5GY5/1 14-24 in/hr
30-60" Sand, single grained, IOGYS/1 14-24 in/hr
I
Ocean Isle West Resort
Ocean Isle Beach, NC
May 18, 2000
Bore hole locations as staked by Thompkins Land Surveying.
Bore Infilt. Estimated High Observed
Hole # Description Rate Watertable Water
BH8 0-12" Sandy clay loam fill, 10YR6/4 —0.6 to in/hr 58" None
12-18" SCL/ CL fill, IOYR6/1,6/4 —0.6 to in/hr
18-58" Sand, single grained, 2.5Y6/3.6/2 14-24 in/hr
58-60" Sand, single grained, 2.5Y6/2,6/1 14-24 in/hr
BH9 0-2" Sandy clay loam fill, 10YR6/6 —0.6 to 1 in/hr 54" None
2-54" Sand, single grained, 2.5Y6/3.6/2 14-24 in/hr
54-60" Sand, single grained, 2.5Y6/2,6/1 14-24 in/hr
SOIL
7
Sent By: LAND MANAGEMENT; 910 452 0060; May-19-00 8:52AM; Page 2/2
Erosion and Sedimentation Control
1.01 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 impoundment's; 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.
1.02 Construction Sequence: While the use of erosion and sedimentation control devices is
especially important on areas of steep topography, 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 areas be
left denuded for more than (30) thirty calendar days without some form of stabilization
until final restoration is complete.
1.03 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:
1. Sediment filter inlets
2. Silt fences
3. Temporary gravel construction entrance
1.03.1 Erosion Control Measures: Some of the soil erosion control measures which may be
required in this contract are:
I. . Storm inlet protection
2. Silt fences
3. Temporary gravel construction entrance
RECEIL �D
JUN 2 3 2000
PROJ # 6
H CARO
Q�OFESS/oyes ,
480 3
�� �. MN \� t°
1.03.2 Detail Drawing: Examples of sedimentation and erosion control details are 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.
1.04 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.
1.05 StockpileBorrow 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.
1.06 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 either sediment traps, filter inlets, gravel filters, or other additional control
measures as 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.
1.07 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
material in Drainage ways for convenience shall not be allowed. Backfilling
operations shall be performed in such a manner that remaining trees are not damaged.
1.08 Final Grading: Finish grading, and installation of the permanent erosion control surfaces
shall be performed after the construction phase is complete. In any case, sediment and
erosion controls shall be installed promptly and their maintenance assured.
1.09 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.
DECRROL WILLIAMSON ENTERPRISES FAX NO. : 91057577t30 Apr. 04 2000 10:24AM P2
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NORTH CAROLINA DEPARTMENT OF
ENVIRONMENT AND NATURAL RESOURCES
131VISION OF COASTAL MANAGEMENT
December 9, 1998
Ocean isle West Resort
IS Causeway Drive
Ocean Isle Beach, NC 28469
Dear Sir
Tbccnck*ed pemmk mastinuesauthor2ati® nndcrihe Coa&WAreaMw4cmentAc; and where applicable,
the State Dredge and F171 Law, for you to proceed with yota'projedproposal. The original (buff -colored form) is
retained by you and it must be available on aim when the pmject is inspected for compliance• Please sign both the
original and the copy and return the copy to this o$loe in the enclosed envelope. Signing the permit and proceeding
means you have waived your right of appeal deacn-bed below.
Ifyon object to *Op=lkcr any Ofdm con h&= youmgytequeg a hearab porsu= W NCGS 113A-121.1
or 113-229. Your petition for a hearing must be filed in accordance with NCGS Chapter 150D with the Office of
AdministmtivcHcatings, P.O. Draws 116", Ralelgh,NC 27611, (919) 733 2698 within twenty (20) days ofdnis
decision on your permit You should also be aware that if another qualified party submits a valid objection to the
issuance ofthis permit within twenty (20) days, the matter must be resolved prior to work initiation. The Coastal
Resources Commission makes the final decision on any appeal.
The project plan is subjeetm those conditions appearing on the permit form, Orherwise� all work must be
carried out in accedence with your application. Modifications, time extensions, and finure maintenance require
additional approval. Please read yoir permit carefully prior to starting work and review all project plans, as
approved, If you are having the work done by a connector, it would be to your benefit to be sure That he dilly
understands all permit requirements.
Prom time to time, Department pemsotwel will visit the project site. To facilitate this review, we request
that you complete and mail the enclosed Notice Card just prior to work initiation. However, if questions arise
conceming permit oonditicas, envconueanml safegttmdt, or problem areas, you may contact Departmentpeisormel ar
any rime for assistance. By working is accordance with the pemnit,.you will be helping to protect our vitally
important coastal resources,
Very sincerely,
7ohn R. Parker, Yr.
Major Permits Processing Coordinator
mnjf/amw
Enclosure
RO- DeA 216d'l, RI1Lr.a•b Fe •27011.10Or /=!}6 C�PIT�4 ■L�On Rw�ClO N, NC aYCW
n'+MONE a1 p•7a3-229a FAY p7 e•raa-t asg
AN SRUAL O►PORTOM>Y MFPIRNATrvG ACTION (:N�40YCR • a0% RGCYCLaD/1 OR POGrKONOH NCR MPaq
rKUM MurIMCREEDWILMINGTON 9102546682
P. 3
DECAROL WILLIAMSON ENTERPRISES FAX NO. : 9105757780 Apr. 04 2000 10:25AM P3
pemtit Clara Permit Nutnber
NEVV 154-98
STATE OF NORTH CAROI-INA
Department of Environment and Natural Resources
and
�oastal Resources Commission
3pErmit
% for
Major Development in an Area of Environmental Concern
pursuant to NCOS 113A-118
Excavation and/or fillingpursaant to NCGS 113-229
Issued to Ocean Isle West Resort, 15 Causeway Drive, Ocean Isle Reach, NC 28469
authorizing development in Brunswick Count, at Atlantic Ocean and Old Sound Creek, western end
of Ocean Isle Beach . as requested in the permittea's applicarton dated 325/98 including attached workplan
drawings described in Condition No. 1, below, and AEC Hazard Notice dated 325/98.
This permit, issued on \ d- —X -- C\J� , is subject to compliance with the application (where consistem
with the pennit), all applicable regulations, special conditions and notes set forth below. Any violation of these terns may
be subject to a fine. imprisonment or civil action; or may cattle the permit to be mull and void.
1) The project will be carried out in strict adherence to the following workplans, unless altered herein:
Sheets 1 and 7 dated 1/6/98, Sheets 5, SA-51., 6, 8, 9, and 11, all dated March IM, 4 townhouse
floor plans, all dated 3/20/98 and 3 duplex unit floor plans, all dated 320/98.
Ocean Front Development
2) Prior to the initiation of construction within the Ocean Hazard AEC, a representative; of the Division
of Coastal Managancnt must stake the limits of the 60 foot small structure development setback,
the 120 foot large structure setback, and the landward limits of the fi=tal dime. Construction must
begin within 30 days of these determinations. Fail= to initiate construction within 30 days, or
erosion of the shoreline by adverse weather conditions, will require these limits to be restaked by the
Division.
(See attached sheets for Additional Conditions)
This permit action may be appealed by the permiatee or.
other qualified persons within twcary (20) days of the
issuing date. An appeal requires resolution prior to work
initiation Pr continuance, as i2te case may be.
This permit must be accessible on -site to Depm=mt
personnel when the project is inspected for compliance_
Any maintenance work or project modification not
covered hereunder requires further13tpartmPr*ar approval.
All work must cease when the permit expires on
Deceraher 31, 2001
In issuing this permit, the State of North Carolina agrees
that your project is consistent with the North Cstoliva
Coastal Management Program.
Signed by the authority of the Secretary of DENR and the
Chairman ofthe Coastal Resources Commission.
onna JVAoffirt,Director
D isionofCoastalManagement
This rrs can i ru are hereby accepted.
Signature of Permitice