HomeMy WebLinkAboutSW8970721_CURRENT PERMIT_19880108STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SW qq76,� 7A I
DOC TYPECURRENT
PERMIT
9APPROVED
PLANS
❑ HISTORICAL FILE
❑ COMPLIANCE EVALUATION INSPECTION
DOC DATE
YYYYMMDD
1�_ r
NCDENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue Coieen H. Sullins
Governor Director
August 22, 2011
Mr. Mark Johnson, President
Portwatch Owners Association
P.O. Box 15329
Carolina Beach, NC 28428 -
Subject: PERMIT RENEWAL REQUEST
Stormwater Permit No. SW8 970721
Port Watch Subdivision
New Hanover County
Dear Mr. Highfill:
Dee Freeman
Secretary
The Division of Water Quality issued a Coastal Stormwater Management Permit, Number SW8 970721 to Port Cape Fear
Associates for a high Density project on January 8,1998, with an Ownership Change to Portwatch Owners Association on
August 16, 2000 and a Permit Extension letter of February 5, 2011. This permit expires on January 8, 2012. Per 15A NCAC
2H.1003(h) (the stormwater rules), applications for permit renewals shall be submitted 180 days prior to the expiration of a
permit and must be accompanied by a processing fee, which is currently set at $505.00, If this is still an active project please
complete and submit the enclosed renewal application as soon as possible. If this,project has not been constructed and a permit
is no longer needed, please submit a request to have the permit rescinded. If you have sold the project please provide the
name, mailing address and phone number of the person or entity that is now responsible for this permit. Enclosed is a form for
change of ownership, which should be completed and submitted if the property has changed hands.
Your permit requires that upon completion of construction and prior to operation of the permitted stormwater treatment system,
a certification of completion be submitted to the Division from an appropriate designer for the type of system installed. This is to
certify that the permitted facility has been installed in accordance with the permit, the approved plans, specifications and
supporting documentation. If you have not already provided a Designer's Certification to our office, please include a copy with
your permit renewal request and processing fee. A copy of the certification form is enclosed for your convenience.
You should be aware that failure to provide the Designer's Certification and the operation of a stormwater treatment facility
without a valid permit, are violations of NC General Statute 143-215.1 and may result in appropriate enforcement action
including the assessment of civil penalties of up to $10,000 per day.
If you have any questions, please feel free to contact David Cox at (910) 796-7318,
Sincerely,
4
Georgette Scott
Stormwater Supervisor
GDSldwc S:MS1Stormwater\Perm1ts & Projects11997/970721 HD12011 08 req_ren 970721
cc: Wilmington Regional Office File
encl.
Wilmington Regional Office
127 Cardinal Drive Extension, Mmington, North Carolina 28405
Phone 910.796-72151 FAX: 910.350-20041 Customer Service: 1.877.623.6748 One
irriernet: www.ncwalerquaiity.org
NorthCarolina
Aahma!!J
An Equal Opportunity 1 Affirmative Action Employer
State Stormwater Management Systems
Permit No, SW8 970721
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
STATE STORMWATER MANAGEMENT PERMIT
HIGH DENSITY DEVELOPMENT
In accordance with the provisions of Article 21 of Chapter 143, General Statutes ofNorth Carolina as amended, and
other applicable Laws, Rules, and Regulations
PERMISSION IS HEREBY GRANTED TO
Portwatch Owners Association
Port Watch Subdivision
New Hanover County
FOR THE
construction, operation and maintenance of a detention pond and an infiltration basin in compliance with the
provisions of 1 SA 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 January 8, 2008 and shall be subject to the following
specified conditions and limitations:
I. DESIGN STANDARDS
I. This permit is effective only with respect to the nature and volume of stormwater described in the
application and other supporting data.
2. This stormwater system has been approved for the management of stormwater runoff as described on page
3 of this permit, the Project Data Sheet. The subdivision is permitted for I 1 lots, each allowed a maximum
of 85% of their respective site areas as built -upon area.
3. Approved plans and specifications for this project are incorporated by reference and are enforceable parts
of the permit.
F)
State Stormwater Management Systems
Permit No. SW8 970721
DIVISION OF WATER QUALITY
PROJECT DATA SHEET
Project Name:
Port Watch Subdivision
Permit Number:
SW8 970721
Location:
New.Hanover County
Applicant:
Mr. Mack Johnson, President
Mailing Address:
Portwatch Owners Associatior
118 Port Watch Way
Wilmington NC 28412
Original Application Date: July 14, 1997
Water Body Receiving Stormwater Runoff: Cape Fear River
Classification of Water Body: "SC"
Depth, feet:
Permanent Pool Elevation, FMSL:
Total Impervious Surfaces, ft2:
1 I Lots at 85%
Roads/Parking, ft2
Other, ft2
Required Surface Area, ft2:
Provided Surface Area, ft2:
Required Storage Volume, fta:
Provided Storage Volume, ft3:
Temporary Storage Elevation, FMS
Controlling Orifice:
Expected infiltration rate:
Time to drawdown.
POND
INFILTRATION
7.5
2.5
17
33.5 (Bottom)
SHWT = 31.5
411,431
75,390
365,716
62,584
35,850
n/a
9,865 (sidewalk)
25,690 (offsite)
14,231
14,432
2,419 (Bottom)
33,059
6,087
84,688
15,482
L: 21.1
37 (top of basin)
3.5" pipe
overflow bypass
n/a.
3.75 cfqu/sf
2.1 days
.7 hours
3
State Stormwater Management Systems
Permit No. SVV8 970721
I1. SCHEDULE OF COMPLIANCE .
1. No lot owner/developer/leasee shall fill in, alter, or pipe any drainage feature (such as swales) shown on the
approved plans as part of the stormwater management system without submitting a revision to the permit
and receiving approval from the Division. The 5:1 swale noted on the plans across the back of Lots 1-4 and
l i is to be used only to convey offsite runoff around the project.
2. The permittee is responsible for verifying that the proposed built -upon area does not exceed the allowable
built -upon area. Once the lot transfer is complete, the built -upon area may not be revised without approval
from the Division of Water Quality, and responsibility for meeting the built -upon area limit is transferred
to the individual property owner.
The following items will require a modification to the permit:
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 of the project area.
f. Filling in, altering, or piping of any vegetative conveyance shown on the approved plan.
g. Alteration of the drainage patterns.
4. The Director may determine that other revisions to the project should require a modification to the permit.
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 it's entirety, vegetated and operational for it's
intended use prior to the construction of any built -upon surface.
7. During construction, erosion shall bekept to a minimum and any eroded areas of the system will be repaired
immediately.
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.
This permit shall become voidable unless the facilities are constructed in accordance with the conditions of
this permit, the approved plans and specifications, and other supporting data.
4
State Stormwater Management Systems
Permit No. SW8 970721
10. The permittee shall at all times provide the operation and maintenance necessary to assure the permitted
stormwater system functions at optimum efficiency. The approved Operation and Maintenance Plan must
be followed in its entirety and maintenance must occur at the scheduled intervals including, but not limited
to:
a. Semiannual scheduled inspections (every 6 months).
b. Sediment removal and unclogging of the infiltration filter media.
C. Mowing and revegetation of side slopes.
d. Immediate repair of eroded areas.
e. Maintenance of side slopes in accordance with approved plans and specifications.
f. Debris removal from the slopes, outlet / bypass structures, orifice device, catch basins and piping.
g. Access to .the outlet / bypass structures must be available at all times.
11. 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.
12. Prior to the sale of any lot, deed restrictions must be recorded which limit the built -upon area per lot to the
amount as shown on the Project Data Sheet, per Section I, Part 2. The recorded statements must follow the
form:
a. "The maximum built -upon area per lot is 85% of the total lot area. The BUA per lot includes that
portion of the right-of-way between the lot line and the edge of pavement, structures, pavement,
walkways of brick, stone, or slate, but does not include open wood decking."
b. "The covenants pertaining to stormwater regulations may not be changed or deleted without
concurrence of the State."
C. "Alteration of the drainage as shown on the approved plan may not take place without the
concurrence of the State."
d. "The -5:1 swale located across the back of Lots 1-4 and 11 is for the routing of offsite water around
the project. No runoff from impervious areas on the project may be directed into the swale."
e. "Runoff from impervious areas of Lot 1 must be collected and directed to the 24" RCP stubout
provided into the adjacent infiltration basin."
f "All runoff from impervious areas on Lots 2-11 must be collected and directed into the permitted
stormwater detention pond."
I I A copy of the recorded deed restrictions must be submitted to the Division within 30 days of the date of
recording the plat. The recorded copy must be signed by the Permittee, dated, stamped with the deed book
number and page, and bear the stamp/signature of the Register of Deeds.
14. 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.
5
State Stormwater Management Systems
Permit No. SW8 970721
III. GENERAL CONDITIONS
l . This permit is'not transferable. In the event there is a desire for the facilities to change ownership, or there
is a name change of the Permittee, a "Name/Ownership Change Form" must be submitted to the Division
of Water Quality accompanied by appropriate documentation from the parties involved, such as a copy of
the deed of trust. Other supporting materials, such as a signed Operation and Maintenance plan in the case
of engineered systems, will also be required. The project must be in good standing with DWQ. The approval
of this request will be considered on its merits and may or may not be approved.
2. Failure to abide by the conditions and limitations contained in this permit may subject the Permittee to
enforcement action by the Division of Water Quality, in accordance with North Carolina General Statute
143-215.6A to 143-215.6C.
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.
4. In the event that the facilities fail to perform satisfactorily, including the creation of nuisance conditions, the
Permittee shall take immediate corrective action, including those as may be required by this Division, such
as the construction of additional or replacement stormwater management systems.
5. The permit may be modified, revoked and reissued or terminated for cause. The filing of a request for a
permit 'modification, revocation and reissuance or termination does not stay any permit condition.
Pen-nittee grants permission to staff of the DWQ to access the property for the purposes of inspecting the
stormwater facilities during normal business hours.
7. The permittee must notify the Division of any changes in name, ownership, or mailing address within 30
days.
Permit modified this the 16th day of August, 2000.
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
Kerr T. Stevens, Director
Division of Water Quality
By Authority of the Environmental Management Commission
Permit Number SW8 970721
C�
State Stormwater Management Systems
Permit No. SW8 970721
Port Watch Subdivision
Stormwater Permit No. SW8 970721
New Hanover County
Engineer's Certification
1, _ , as a duly registered Professional Engineer in the State of North
Carolina, having been authorized to observe (periodically/weekly/full time) the construction of the project,
(Project)
for (Project Owner) hereby state that, to the best of my abilities, due care
and diligence was used in the observation of the project construction such that the construction was observed to be
built within substantial compliance and intent of the approved plans and specifications.
Noted deviations from approved plans and specifications:
Signature
Registration Number
Date
SEAL
V]
State of North Carolina
Department of Environment
and Natural Resources
Waminb on Regional Office
James B. Hunt, Jr., Governor
Wayne McDevitt, Secretary
Division of Water Quality
WATER QUALITY SECTION
COASTAL STORMWATER PERMIT NAM-E/OW ERSM CHANGE FORM
I. C URRNT PER IT INFORMAT�QN:
Stormwater Management Permit Number: SW8 970721 _
1. Permit Holder'sname: Port Cape Fear Associates
?. Permit's signing official's name and title: _ Nelson B. Fry
(person Icgally responsible for permit)
General Manager
(Title)
3. Maiiing address: _ _3410 River Rd. City: Wilmington
State: NC Zip Code: 28412 Phone: 910-395-5055 FAX 910-395-0063
(Area Code and Number) (Area Code and Number)
II. NEW OWNERIN AME INFORNLATION
1. This request is for:
X a. Chanoe in ownership of the property/company
x_ 6. Name chancre of project or company. �U�tLU?fG� EUbC!1yi S(Ca1
c. Other (please explain)_
2. New owner's name (name to iie put on permit): Portwatch Owners Association
3. New owner's signing official's name and title: Mark Johnson
(Person le-aliy responsinie for permit)
President
4. Nfailing address: 118 Port Watch Wa
State: NC Zip Code: 28412 phone: 910-395-9345
(Ama Code and Number)
(Title)
City:
Wilmington
FAX 910-395-9305
(Area Code and Number)
THIS APPLICATION PACKAGE WILL NOT BE ACCEPTED BY THE DNISION OF WATER QUALITY
UNLESS ALL OF THE APPLICABLE ITEMS LISTED BELOW ARE INCLUDED WITH THE SUBMTI'I'AL.
REQUIRED ITEMS:
This completed form.
Legal documentation of the transfer of ownership.
I A copy of the recorded deed restrictions, if required by the permit.
4. The engineer's certification, if required by the permit.
5. A signed Operation.and Maintenance plan, if a system that requires maintenance will change ownership.
CERTIFICATION MUST BE COMPLETED AMID SIGNED BY BOTH THE CURRENT PERMIT HOLDER AMID
THE NEW APPLICANT IN THE CASE OF A CHANGE OF OWNERSHIP.
FOR NAIYIE CHANGES, COMPLETE AND SIGN THE CURRENT PERNII=E'S CERTIFICATION.
Current Permittee's Certification:
I, Nelson B. Fry attest that this application for a name/ownership change has been reviewed and
is accurate and complete to the best of my knowledge. I understand that if all required parts of this applicatiion are not
completed and that if all required supporting information and attachments are not included, this application package will be
returned as incomplete
4�,gz Signature-.��114 Date:
Applicant's Certification:
I, Mark Johnson attest that this application for a name/ownership change has been reviewed and
is accurate and complete to the best of my knowledge. I understand that if all required parts of this application are, not
completed and that -if all regts red supporting information and attachments are not included. this application package will be
returned as incomplete.
Siznature:
Date: 60
THE CONIPLETiEI'4PPLICATION PACKAGE. INCLUDING ALL SUPPORTING INFORNLkTION AND MA T ERLALS.
SHOULD BE SENT TO THE FOLLOWING ADDRESS:
North Carolina Department of Environment and Natural Resources
Division of Water Quality
127 Cardinal Drive Extension
Wiiminzton. NC 29405
Ai TN: Linda Lewis
VIED
JUL 14 z000
Permit No.:5W 3 l707 21
(to be provider! by DWO
State of North Carolina
BY: 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.
1. PROJECT INFORMATION
Project Name: Por f W?, Grl SU�d + {fir 51 O h
Contact Person: Made- whrn Sor) Phone Number: 0111
For projects with multiple basins, specify which basin this worksheet applies to:
elevations
Basin Bottom Elevation
Permanent Pool Elevation
Temporary Pool Elevation
3 15 -q 3 ¢S
ft. (floor of the basin)
I % ft. (elevation of the orifice)
Z / • ft. (elevation of the discharge structure overflow)
areas
Permanent Pool Surface Area 14 4 3�- sq. ft. (water surface area at the orifice elevation)
Drainage Area i2.13 ac. (on -site and off -site drainage to the basin)
Impervious Area 2,4 5 ac. (on -site and off -site drainage to the basin)
volumes
Permanent Pool Volume
Temporary Pool Volume
Forebay Volume
Other parameters
SA/DA 1
Diameter of Orifice
Design Rainfall
Design TSS Removal 2
Form S W U-1 Q2 Rev 3.99
04 cu. ft. (combined volume of main basin and forebay)
94 G 99 cu. ft. (volume detained above the permanent pool)
tiJJA cu. ft. (approximately 20% of total volume)
2,170 (surface area to drainage area ratio from DWQ table)
3, 5 in. (2 to 5 day temporary pool draw -down required)
i in.
90 % (minimum 85% required)
Page 1 of 4
Footnotes:
t When using; the Division SA/DA tables, the correctSA/DA ratio for permanent pool sizing should be computed based upon the
actual impervious % and permanent pool depth. Linear interpolation should be employed to determine the correct value for non-
standard table entries.
z In the 20 coastal counties, the requirement for a vegetative filter maybe waived if the wet detention basin is designed to pr ovide
901/o TSS removal. The NCDENR BMP manual provides design tables for both 85% TSS removal and 90% TSS removal.
II. REQUIRED ITEMS CHECKLIST
The following checklist outlines design requirements per the Stormwater Best Management Practices Manual
(N.C. Department of Environment, Health and Natural Resources, February 1999) and Administrative Code
Section: 15 A NCAC 2H .1008.
Initial in the space provided to indicate the 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.
s
a. The permanent pool depth is between 3 and 6 feet (required minimum of 3 feet).
b. The forebay volume is approximately equal to 20% of the basin volume.
c. The temporary pool controls runoff from the design storm event.
1
e
The 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)
F. The basin length to width ratio is greater than 3: 1.
D. The basin side slopes above the permanent pool are no steeper than 3:1,
'i. A submerged and vegetated perimeter shelf with a slope of 6:1 or less (show detail).
I. Vegetative cover above the permanent pool elevation is specified.
j. A trash rack or similar device.is provided for both the overflow and orifice.
k. A recorded drainage easement is provided for each basin including access to nearest right-
of-way. -
AA 1. If the basin is used for sediment and erosion control diiring construction, clean out of the
basin is specified prior to use as a wet detention basin.
m. A mechanism is specified which will drain 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 if one is provided.
This system (check one) 0 does does not incorporate a vegetated filter at the outlet.
This system (check one) 0 does does not incorporate pretreatment other than a forebay.
Form SWU-102 Rev 3.99 rage 2 of 4
Footnotes:
' When using the Division SAIDA tables, the correcvSA/DA ratio for permanent pool sizing should be computed based upon the
actual impervious % and permanent pool depth. Linear interpolation should be employed to determine the correct value for non-
standard table entries.
2 1 n the 20 coastal counties, the requirement for a vegetative filter may be waived if the wet detention basin is designed to pr ovide
90% TSS removal. The NCDENR BMP manual provides design tables for both 85% TSS removal and 90% TSS removal.
11. REQUIRED ITEMS CHECKLIST
The following checklist outlines design requirements per the Stormwater Best Management Practices Manual
(N.C. Department of Environment, Health and Natural Resources, February 1999) and Administrative Code
Section: 15 A NCAC 2H .1008.
Initial in the space provided to indicate the 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.
a. The permanent pool depth is between 3 and 6 feet (required minimum of 3 feet).
b. The forebay volume is approximately equal to 20% of the basin volume.
c. The temporary pool controls runoff from the design storm event.
C!
e
The 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: 1.
The 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 overflow and orifice.
A recorded drainage easement is provided for each basin including access to nearest right-
of-way.
ti 1. 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.
M.
A mechanism is specified which will drain the basin for maintenance or an emergency.
III. NVET DETENTION BASIN OPERATION AND MAINTENANCE AGREEN'I.ENT
The 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) 0 does &does not incorporate a vegetated- filter at the outlet.
This system (check one) 0 does ',$Ooes not incorporate pretreatment other than a forebay.
Form SIAIU-102 Rev 3.99 Page 2 of
Maintenance activities shall be performed as follows:
1. After every significant runoff producing rainfall event and at least monthly:
a. 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.
3. Inspect and repair the collection system (i.e. catch basins, piping, swales, riprap, etc.) quarterly to maintain
proper functioning.
4. 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 such that it will give an accurate
depth reading and not readily penetrate into accumulated sediments.
When the permanent pool depth reads S-676 feet in the main pond, the sediment shall be removed.
When the permanent pool depth reads 2.25 feet in the forebay, the sediment shall be removed.
BASIN DIAGRAM
(fill in the blanks)
Q Permanent Pool Elevation /7
Sediment Re val El. , C 7! . 750
-------------- Sediment Removal Elevation 11, 35 75%.
Bottom Ele anon 2
-----------------------------------------------------
Bottom Elevation q. S 25%
FOREBAY MAIN POND
5. 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,
6. If the basin must be drained for an emergency or to perform maintenance, the flushing of sediment through
the emergency drain shall be minimized to the maximum extent practical.
Form SWU-102 Rev 3.99 Page 3 of
5
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 I 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:�JoNO&+.i
Title:. ?2i-51'eJ-AT
Adds
Phor
Sign
Date
Note: The legally responsibie party should not be a homeowners association unless more than 50%.of the lots have been sold and a
resident of the subdivision has been named the president.
a Notary Public for the St of C-
County of UAC)Z)V do herebycertif t
personally appeared before me this l —day of 9' ,and acknowledge the due
execution of the forgoing wet detention basin maintWance requirements. Witness my hand and official seal,
SEAL
My commission expires
(:;�Z'/
Form SWU-102 Rev 3.99 Page 4 of 4
7. All components of the wet detention basin system shall be maintained in good working order.
1 acknowledge and agree by my signature below that I 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: WA A E i 3o t
Title: rkt5l
Ad&
Phone
Signa
Date:
Note: The legally responsible party should not be a homeowners association unless more than 50%.of the lots have been sold and a
resident of the subdivision has been named the president.
11a Notary Public for the St of
County of dw,� Jf do hereby, certif t
personally appeared before me this _�oZ 7.�day ofUZ
�and acknowledge the due
execution of the forgoing wet detention basin maint/iance requirements. Witness my hand and official seal,
SEAL
My commission expires
(:,;k�, 5;:2 CO ZL
Form SWU-102 Rev 3.99 Page 4 of 4
Permit No. 5&UY 9-70721
(to be provided by DWQ)
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
INFILTRATION BASIN SUPPLEMENT
This form may be photocopied for use as an original
DWO Stormwater Management Plan Review:
A complete stormwater management plan submittal includes a stormwater management permit application, an
infiltration basin supplement for each system, design calculations, soils report and plans and specifications
showing all stormwater conveyances and system details.
I. PROJECT INFORMATION
Project Name : PDrfW 2101 5'0h0/" vi. 5 i.I
Contact Person: M2/-k 7oh/7saj _ Phone Number: 0/0
This woricsheet applies to: Basin No. in Drainage Area
(as identified on plans) (from Form SWU-101)
II. DESIGN INFORMATION - Attach supporting calculations/documentation. The soils report must be
based upon an actual field investigation and soil borings. County soil maps are not an acceptable
source of soils information. All elevations shall be in feet mean sea level (fmsl).
Soils Report Summary
Soil Type i5AA10
Infiltration Rate 2 in/ or cf(hr/sf (circle appropriate units)
SHWT Elevation 31. S fmsl (Seasonal High Water Table elevation)
Basin Design Parameters
Design Storm inch (1.5 inch event for SA waters. 1 inch event for others)
Design Volume Co¢z8 7 c.f.
Drawdown Time 93 days
Basin Dimensions
Basin Size
Basin Volume Provided
Basin Elevations
Bottom Elevation
Storage Elevation
Top Elevation
ft. x
rj f �2 c.f.
3 3,5 fmsl
37 fmsl
fmsl
ft. = Z 41 ( sq. ft. (bottom dimensions)
Form SWU-103 Rev 3.99 Page 1 of 3
III. REQUIRED ITEMS CHECKLIST
The following checklist outlines design requirements per the Stormwater Best Management Practices Manual
(N.C. Department of Environment, Health and Natural Resources, February 1999) and Administrative Code
Section: 15 A NCAC 2H .1008.
Initial in the space provided to indicate that the following design requirements have been met and supporting
documentation is attached. If the applicant has designated an agent in the Stormwater Management Permit
Application Form, the agent may initial below. Attach justification if a requirement has not been met.
41
Itials
a. System is located 50 feet from class SA waters and 30 feet from other surface waters.
b. System is located at least 100 feet from water supply wells.
c. Bottom of system is at least 2 feet above the seasonal high water table.
d. Bottom of the system is 3 feet above any bedrock or impervious soil horizon.
e. System is not sites, on or in fill ►material or DWQ approval has been obtained.
f. System is located in a recorded drainage easement for the purposes of operation and
maintenance and has recorded access easements to the nearest public right-of-way.
g. Drainage area for the device is less than 5 acres.
h. Soils have a minimum hydraulic conductivity of 0.52 inches per hour and soils report is
attached.
i. System captures and infiltrates the runoff from the first 1.0 inch of rainfall (I.5 inch event
for areas draining to SA waters ). Design volume and infiltration calculations attached.
System is sized to take into account the runoff at the ultimate built -out potential from all
surfaces draining to the system, including any off -site drainage. Calculations attached.
k. All side slopes stabilized with vegetated cover are no steeper than 3:1 (H:V).
1. A pretreatment device such as a catch basin, grease trap, filter strip, grassed swale or
sediment trap is provided.
m. Bottom of the device is covered with a layer of clean sand to an average depth of 4 inches
or dense vegetative cover is provided.
n. Vegetated filter is provided for overflow and detail is shown on plans (Required minimum
length is 50 feet for SA waters, 30 feet for other waters).
Flow distribution mechanism within the basin is provided.
A benchmark is provided to determine the sediment accumulation in the pretreatment
device.
q. Runoff in excess of the design volume bypasses off-line systems (bypass detail provided).
r. System is designed to draw down the design storage volume to the proposed bottom
elevation under seasonal high water conditions within five days. A soils report and all
pertinent draw -down calculations are attached.
s. Plans ensure that the installed system will meet design specifications (constructed or
restored) upon initial operation once the project is complete and the entire drainage area is
stabilized.
Form SWU-103 Rev 3.99 Page 2 of 3
III. REQUIRED ITEMS CHECKLIST
The following checklist outlines design requirements per the Stormwater Best Management Practices Manual
(N.C. Department of Environment, Health and Natural Resources, February 1999) and Administrative Code
Section: 15 A NCAC 2H .1008.
Initial in the space provided to indicate that the following design requirements have been met and supporting
documentation is attached. If the applicant has designated an agent in the Stormwater Management Permit
Application Form, the agent may initial below. Attach justification if a requirement has not been met.
M-
a
tials
a. System is located 50 feet from class SA waters and 30 feet from other surface waters.
b. System is located at least 100 feet from water supply wells.
c. Bottom of system is at least 2 feet above the seasonal high water table.
d. Bottom of the system is 3 feet above any bedrock or impervious soil horizon.
e. System is not sited on or in fill matental or DWQ approval has been obtained.
f. System is located in a recorded drainage easement for the purposes of operation and
maintenance and has recorded access easements to the nearest public right-of-way.
g. Drainage area for the device is less than 5 acres.
h. Soils have a minimum hydraulic conductivity of 0.52 inches per hour and soils report is
attached.
i. System captures and infiltrates the runoff from the first 1.0 inch of rainfall (1.5 inch event
for areas draining to SA waters ). Design volume and infiltration calculations attached.
J. System is sized to take into account the runoff at the ultimate built -out potential from all
surfaces draining to the system, including any off -site drainage. Calculations attached.
k. All side slopes stabilized with vegetated cover are no steeper than 3:1 (H:V).
1. A pretreatment device such as a catch basin, grease trap, filter strip, grassed swale or
sediment trap is provided.
m. Bottom of the device is covered with a layer of clean sand to an average depth of 4 inches
or dense vegetative cover is provided.
0114 n. Vegetated filter is provided for overflow and detail is shown on plans (Required minimum
length is 50 feet for SA waters, 30 feet for other waters).
N A o
AJIA p
W_A19
Flow distribution mechanism within the basin is provided.
A benchmark is provided to determine the sediment accumulation in the pretreatment
device.
Runoff in excess of the design volume bypasses off-line systems (bypass detail provided).
System is designed to draw down the design storage volume to the proposed bottom
elevation under seasonal high water conditions within five days. A soils report and all
pertinent draw -down calculations are attached.
Plans ensure that the installed system will meet design specifications (constructed or
restored) upon initial operation once the project is complete and the entire drainage area is
stabilized.
Form SWU-103 Rev 3.99 Page 2 of 3
IV. INFILTRATION BASIN OPERATION AND MAINTENANCE AGREEMENT
I . After every runoff producing rainfall event and at least monthly inspect the infiltration system for erosion,
trash accumulation, vegetative cover, and general condition.
2. Repair eroded areas immediately, re -seed as necessary to maintain adequate vegetative cover, mow
vegetated cover to maintain a maximum height of six inches, and remove trash as needed.
3. After every runoff producing rainfall event and at least monthly inspect the bypass, inflow and overflow
structures for blockage and deterioration. Remove any blockage and repair the structure to approved
design specifications.
4. Remove accumulated sediment from the pretreatment system and infiltration basin annually or when
depth in the pretreatment unit is reduced to 75% of the original design depth. The system shall be restored
to the original design depth without over -excavating. Over -excavating may cause the required water
table separation to be reduced and may compromise the ability of the system to perform as designed.
Removed sediment shall be disposed of in an appropriate manner and shall not be handled in a manner
that will adversely impact water quality (i.e. stockpiling near a stormwater treatment device or stream,
etc.).
A benchmark shall be established in the pretreatment unit. The benchmark will document the original
design depth so that accurate sediment accumulation readings can be taken. The measuring device used
to determine the depth at the benchmark shall be such that it will give an accurate depth reading and not
readily penetrate into accumulated sediments.
When the design depth reads 0+A feet in the pretreatment unit, the sediment shall be
removed from both the pretreatment unit and the infiltration basin.
5. If the Division determines that the system is failing, the system will immediately be repaired to original
design specifications: If the system cannot be repaired to perform its design function, other stormwater
control devices as allowed by NCAC 2H .1000 must be designed, approved and constructed.
I acknowledge and agree by my signature below that I am responsible for the performance of the five
maintenance procedures listed above. I agree to notify DWQ of any problems with the system or prior to any
changes to the system or responsible party.
Print Name and Title: 6\ 4Crc b. ,� c�+�e-1S�*S r`�2�5 i �� HT
Address: 11'R 1�or4u_)cA-c_k (,, 4 LJ j 1►.n i ,n a6n zD&41 Q
Phone: C�10 3 -q Date:-tllaloo
Signature: iAAAJL
Note: The legally sible party s ould not be a homeowners association unless more than 50% of the lots have been sold and
resident of t e su ivision has been named the president.
I, � &41�=L- , a Notary Publi r tate f y of
o he%by certify tha An personally appeared before me this _
day of AWL
Imo-- a6t4W acknowledge the due exe&sfion of the forgoing infiltration basin maintenance
requirements. Witnes y had and official seal,
SEAL. My commission expires
Form SWU-103 Rev 3.99 Page 3 of 3
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00/30/98 TUE 13:39 FAX 9103950063 WllminBton Marine Ctr
Z003
Wilmington Marine Center Subdivision
New Hanover County
Stormwater Project No SWS 970721
Engineer's Certification
I, Phillip G. Tripp , as a duly registered Professional Engineer in the State
of North Carolina, having been authorized to observe (periodically�� the construction of the
project,
Wilmington Marine Center Subdivision
(Project)
for Port Cape Fear Associates (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 constriction was
observed to be built within substantial compliance and intent of the approved plans and specifications.
Please note any deviations from the approved plans below:
Signature
Registration Number �7374
Date 12/10/98
E C E I V E
DEC 111998
PRoiN
D E M
SEAL
p1,1 NA
a o %It"I =
ENGC�4���`
SPiv11--Y
3
s
RATED—
Iy 15 LANDSCAPE BUFFER —
RATED Q! y 15 DRAINAGE /
I ' f•�EXI,_;TlNG ACCESS EASEMENT
1r' i } ALL SIDES OF POND
RATED i' `�- ti `� �
� T�._ ' LOT 1
1.44 ACRES
RATED INFILTRATION POND
JLuj 1' ,__�` €,... {s j' ;4; } (ENLARGE EXISTING POND)
I f x l _ _ : 1 ,` �; TOP OF BANK EL. 37.0
FLOOD EL. 36.0
BOTTOM EL. 33.5
DRAINAGE -AREA FOR `
INFILTRATION POND:
1 LOT` 1 AND ADJACENT LOTEXIST, SDMH 1 � �- (NO OFFSITE DRAINAGE)
TOP 36.16 I — 1• ,
INV. 32.7 �I EXIS. 51 I I J
1 j ,
! f f CONC. WALK . ' �� 55 LF 24" -RCP
:4" RCP SECTION I r ! EX}ST.'2e F.E.S. f� ® 0.20% w/ PLUG
„ I INV. � 32.8 - e 33.5 1 1 /2" W SERVI
:XIST. 24 F.E.S. HC •RAMP s— w/ 1 METER (T
.ONSTRUCTION (SEE DETAIL)
kNCE iM 33.8
lhd+d--�9-■0,•- —99!-:Ie�WCIP�£f�,b1Ei� �.'�' �
PING SLEEVE �a.�:. — _ — .---_--77
G VALVES
. No 1
60' RW-SDMH
%TCH EXISTING -b�o .,TOP 35.65
)P 35.45f 2RCP �Sa.
INV. 29.4
35' RADIUS 1 S
24" F.E.S. IVL2 NIEIfL1
�_.
INV. 31.6 ( RIM 33.8 ;
t INV. 30.2 SSMH NO.E� o �`
1 HC RAMP f.._ 10N
1 O'x 1 O'x 12" I SSMH No.1 D
j 1 ENERGY DISSIPATOR
It l
f LOT s
W
LOT 7 '� 0.92 ACRE ,5' s
I�..,. .. I 0.95 ACRE I r.
� I r SSIr
State of North Carolina
Department of Environment
and Natural Resources
Wilmington Regional Office
James B. Hunt, Jr., Governor
Wayne McDevitt, Secretary
Division of Water Quality
January 8, 1998
Mr. Nelson B. Fry, General Manager
Port Cape Fear Associates
3410 River Road
Wilmington, NC 28412
NZ.1WAo
NCDENR
NORTH CAROL-INA DEPARTMENT Or
ENVIRONMENT ANo NATURAL RESOURCES
Subject: Permit No. SW8 970721
Wilmington Marine Center Commercial Subdivision
High Density Subdivision Stormwater Project
New Hanover County
Dear Mr. Fry:
The Wilmington Regional Office received the Stormwater Management Permit Application for Wilmington Marine Center
Commercial Subdivision on July 14, 1997, with final information on November 10, 1997. 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 970721, dated January 8, 1998, for the construction of the project,
Wilmington Marine Center Commercial Subdivision.
This permit shall be effective from the date of issuance until January 8, 2008, 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 150E of the North Carolina General Statutes, and filed with the Office of Administrative
Hearings, P.O. Drawer 27447, Raleigh, NC 27611-7447. Unless such demands are made this permit shall be final and binding.
If you have any questions, or need additional information concerning this matter, please contact Linda Lewis, or me at (910)
395-3 900.
Sincerely,
t—
Rick Shiver, P.G.
Acting Regional Water Quality Supervisor
RSS/arl: S:IWQSISTORMWATIPERMIT1970721.JAN
CC'. Phil Tripp, P.E.
Tony Roberts, New Hanover County Inspections
Beth Easley, New Hanover County Engineering
Linda Lewis
W� ington-Regional-Office
Central Files
127 North Cardinal Dr., Wilmington, North Carolina 28405 Telephone 910-395-3900 FAX 910-350-2004
An Equal Opportunity Affirmative Action Employer 50% recycled/10% post -consumer paper
State Stormwater Management Systems
Permit No, SW8 970721
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
_ — DIVISION OF WATER QUALITY
STATE STORMWATER MANAGEMENT PERMIT
HIGH DENSITY DEVELOPMENT
In accordance with the provisions of Article 21 of Chapter 143, General Statutes of North Carolina as amended, and
other applicable Laws, Rules, and Regulations
PERMISSION IS HEREBY GRANTED TO
Port Cape Fear Associates
Wilmington Marine Center Commercial Subdivision
New Hanover County
FOR THE
construction, operation and maintenance of a detention pond and an infiltration pond 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 January 8, 2008 and shall be subject to the following
specified conditions and limitations:
1. DESIGN STANDARDS
1. This permit is effective only with respect to the nature and volume of stormwater described in the
application and other supporting data.
2. This stormwater system has been approved for the management of stormwater runoff as described on page
3 of this permit, the Project Data Sheet. The subdivision is permitted for 10 lots, each allowed a maximum
of 85 % of their respective site areas as built -upon area.
3- Approved plans and specifications for this project are incorporated by reference and are enforceable parts
of the permit.
2
State Stormwater Management Systems
Permit N . SW8 970721
Project Name:
Permit Number:
_- ..Location: - -
Applicant:
Mailing Address:
DIVISION OF WATER QUALITY
PROJECT DATA SHEET
Wilmington Marine Center Commercial Subdivision
970721
- - New Hanover County -
Mr. Nelson B. Fry, General Manager
Port Cape Fear Associates
3410 River Road
Wilmington, NC 28412
Application Date: July 14, 1997
Water Body Receiving Stormwater Runoff: Cape Fear River
Classification of Water Body: "SC"
Depth, feet:
Permanent Pool Elevation, FMSL-.
Total Impervious Surfaces, ft2:
10 Lots at 85 %
Roads/Parking, ft2
Other, ft2
Required Surface Area, ft2:
Provided Surface Area, ft2:
Required Storage Volume, ft3:
Provided Storage Volume, ft3:
Temporary Storage Elevation, FM
Controlling Orifice:
Expected infiltration rate:
Time to drawdown:
PO
SL:
INFILTRATION
7.5
2.5
17
33.5 (Bottom)
SHWT = 31.5
411,431
75,390
365,716
62,584
35,850
nla
9,865 (sidewalk)
25,690 (offsite)
14,231
14,432
2,419 (Bottom)
33,059
6,087
84,688
15,482
21.1
37 (top of basin)
3.5" pipe
overflow bypass
n/a
3.75 cflhrlsf
2.1 days
.7 hours
3
- - State Stormwater Management Systems
Permit No. SW8 970721
4. No lot owner/developer/leasee shall fill in, alter, or pipe any drainage feature (such as swales) shown on
the approved plans as part of the stormwater management system without submitting a revision. to the
permit and receiving approval from the Division. The 5:1 swale noted on the plans across the back of Lots
14 and I is to be used only to convey offsite runoff around the project. ---
5. The "permittee is responsible for verifying that the proposed built'upon area does not exceed the allowable
built -upon area. Once the lot transfer is complete, the built -upon area may not be revised without approval
from the Division -of Water Quality, -and responsibility for --meeting the built -upon area Iimit is transferred
to the individual property owner.
6. The following items will require a modification to the permit:
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. Further subdivision of the project area.
f. Filling in, altering, or piping of any vegetative conveyance shown on the approved plan.
In addition, the Director may determine that other revisions to the project should require a modification
to the permit.
7. 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.
111. SCHEDULE OF COMPLIANCE
1. The permittee will comply with the following schedule for construction and maintenance of the stormwater
management system:
a. The stormwater management system shall be constructed in it's entirety, vegetated and operational
for it's intended use prior to the construction of any built -upon surface except roads.
b. During construction, erosion shall be kept to a minimum and any eroded areas of the system will
be repaired immediately.
2. The permittee grants permission to DENR Staff to enter the property for the purposes of inspecting the
project for compliance with the conditions of this permit.
3. 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.
4
State Stormwater Management Systems
Perrot No, SW8 97 721
4. The permittee shall at all times provide the operation and maintenance necessary to assure the permitted
stormwater system functions at optimum efficiency. The approved Operation and Maintenance Plan must
be followed in its entirety and maintenance must occur at the scheduled intervals including, but not limited
to:
- a. Semiannual scheduled inspections (every 6 months). -
b. Sediment removal.
C. _ Mowing and-revegetation of side slopes:.. -
d. Immediate repair of eroded areas.
e. Maintenance of side slopes in accordance with approved plans and specifications.
f. Debris removal and unclogging of outlet structure, orifice device and catch basins and piping.
g. Access to the outlet structure must be available at all times.
5. 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.
6. Prior to the sale of any lot, deed restrictions must be recorded which limit the built -upon area per lot to
the amount as shown on the Project Data Sheet, per Section I, Part 2. The recorded statements must
follow the form:
a. "The maximum built -upon area per lot. is 85 % of the total lot area. The BUA per lot includes that
portion of the right-of-way between the lot line and the edge of pavement, structures, pavement,
walkways of brick, stone, or slate, but does not include open wood decking."
b. "The covenants pertaining to stormwater regulations may not be changed or deleted without
concurrence of the State. "
C. "Alteration of the drainage as shown on the approved plan may not take place without the
concurrence of the State."
d. "The 5:1 swale located across the back of Lots 14 and 11 is for the routing of offsite water around
the project. No runoff from impervious areas on the project may be directed into the Swale. "
e. "Runoff from impervious areas of Lot 1 must be collected and directed to the 24" RCP stubout
provided into the adjacent infiltration basin. "
f. "All runoff from impervious areas on Lots 2-11 must be collected and directed into the permitted
stormwater detention pond."
7. This permit shall become voidable unless the facilities are constructed in accordance with the conditions
of this permit, the approved plans and specifications, and other supporting data.
8. A copy of the recorded deed restrictions must be submitted to the Division within 30 days of the date of
recording the plat. The recorded copy must be signed by the Permittee, dated, stamped with the deed book
number and page, and bear the stamp/signature of the Register of Deeds.
5
State Stormwater Management Systems
Permit No. SW8 970721
9. 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.
III. GENERAL CONDITIONS
1. This permit is not transferable. In the event there is a desire for the _facilities to change ownership, or
there is a name change of the Permittee, a "Name/Ownership Change Form" must be submitted to the
Division of Water Quality accompanied by. appropriate documentation from the parties. involved, such as
a copy of the deed of trust. Other supporting materials, such as a signed Operation and Maintenance plan
in the case of engineered systems, will also be required. The project must be in good standing with
DWQ. The approval of this request will be considered on its merits and may or may not be approved.
2. Failure to abide by the conditions and limitations contained in this permit may subject the Permittee to
enforcement action by the Division of Water Quality, in accordance with North Carolina General Statute
143-215.6A to 143-215.6C.
3. The issuance of this permit does not preclude the Permittee from complying with any and all statutes,
rules, regulations, or ordinances which may be imposed by other government agencies (local, state, and
federal) which have jurisdiction.
4. In the event that the facilities fail to perform satisfactorily, including the creation of nuisance conditions,
the Permittee shall take immediate corrective action, including those as may be required by this Division,
such as the construction of additional or replacement stormwater management systems.
5. The permit may be modified, revoked and reissued or terminated for cause. The filing of a request for
a permit modification, revocation and reissuance or termination does not stay any permit condition.
6. Permittee grants permission to staff of the DWQ to access the property for the purposes of inspecting the
stormwater facilities during normal business hours.
Permit issued this the 8th day of Janaury, 1998.
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
'L-�L— c. C_ 9 - _ c::; h t \J <�— r—
tiA. Preston Howard, Jr., P.E. , Director
Division of Water Quality
By Authority of the Environmental Management Commission
Permit Number SW8 970721
31
State Stormwater Management Systems
Permit No. SW8970721
Wilmington Marine Center Commercial Subdivision
Stormwater Permit No_. S W 8 970721
New Hanover County
Engineer's Certification
as a duly registered Professional Engineer in the State of
North Carolina, having been authorized to observe (periodically/weekly/full time) the construction of the project,
(Project)
for (Project Owner) hereby state that, to the best of my abilities, due
care and diligence was used in the observation of the project construction such that the construction was observed
to be built within substantial compliance and intent of the approved plans and specifications.
Noted deviations from approved plans and specifications:
Signature
Registration Number
Date
SEAL
7
DIVISION OF WATER QUALITY
TE 9726
NORTH CAROLINA STORMWATER MANAGEMENT' PERMIT APPLICATION
1. GENERAL INFORMATION
(Please print clear hj or tv pe)
l . Project Name Wilmington Marine Center
2. Location, directions to project (include County, Address, State Road) Attach map. New Hanover
County, Intersection of River Road-(SR-1 10Oand B an Road SR 1115).
3. Owner's Name Port Cape Fear Associates Phone 910 395-5055
4. Owner's Mailing Address 3410 River Road
5. City Wilmin gton State NC Zip 28412
6. Nearest Receiving Stream _ Unnamed tributary of Cape Fear River Class C SW
7. Project Description Commercial sub -division
ll. PERMIT INFORMATION
,
1. Permit No. (1'o be filled in bvD6i"CQ)
SW8 970721
`
2. Application Date 07/02/97 rev. 08/29/97
Fee enclosed $ 385.00
3. Permit Type: X.._ New
Renewal
Modification (existing Permit No,)
4. Project Type: Low Density X
Detention X Infiltration�Redevelop General Alter Offsite
5. Other State/Federal Permits/Approvals Required (Check appropriate blanks)
6. CAMA Major Sedimentation/Erosion Control
404 Permit
111. B U 1 LT U PON A R EA (]'lease see NCl C 211.1005 thru .1007 for
applicable density limits)
POND #1
POND #2
Drainage
Drainage
Breakdown of Impervious Area
Basin
Basin
(Please indicate below the design impervious area)
Det. Pond Infil. Pond
Classification C SW_
CSW
Buildings NIA 5,600 sf_�
Existing Built -upon Area NIA
NIA
Streets 36,560 sf 15,774 sf
(Asphalt)
Proposed Built -upon Area 411,431 sf
_ 75,390 sf_
Sidewalks _ 9�865 sf_ 1 316 sf
(Concrete)
Total Project Area 528,353 sf
_103,380 sf_
Other 365,716 sf 52,700 sf _
(85% imp./ lot) (85% imp -Lot i )
% Built -upon Area 77.9%
72.5%
Totals 411,431 sf 75,390 sf
IV. STORMWATER TREATMENT (Descrthe how the runoff'will he treated)
One 1 detention pond and one I infiltration
V.
DEED RESTRICTIONS AND PRTECTIVE COVENANTS
VI.
Deed restrictions and protective covenants are required to be recorded for all low density projects and all
subdivisions prior to the sale of any lot. Please see Attachment A for the specific items that must be recorded for
the type of project applied for.
By your signature below, you certify that the recorded deed restrictions and protective covenants for this project
shall include all the items required by the permit, that the covenants will be binding on all parties and persons
claiming under them, that they will run with the land, that the covenant cannot be changed or deleted without
concurrence from the State, and that they will be recorded prior to the sale of any lot.
OWNER'S CERTIFICATION
1, Nelson B. Ski F certify that the information included on this permit
(Please print clearly or type)
application form is correct, that the project will be constructed in conformance with the approved plans, that the
deed restrictions will be recorded with all required pennit conditions, and that to the best of my knowledge, the
proposed project complies with the requirements of 15A NCAC 2H.1000.
authorize a below named person or firm to submit stormwater plans on my behalf,
C-'"'*",z 5�� Gzu� )
Owner/Authorized Agent Signature and Title
VII. AGENT AUTHORIZATION
Date
Person or firm name TrippEngineering, P.C.
Mailing Address 507 Chestnut Street
City Wilmington State NC Zip 28401 Phone (910) 763-5100
Please submit application, fee, plans and calculations to the appropriate Regional Office.
cc: Appiicant/WiRO/Centrai Files
STORMWATE
E C E I V E
SEP U 31997
D
D CIO?Z
PROD 11
A TTACMvSkNT A
LOW DENSITY AND SUBDIVISION PROJECTS
GENERAL SLTBZ,iITTAL FEwQTJTREI)LENNTS
1. A corzzpleted stormwater permit application.
2. Two sets of plans showing north arrow, scale, revision date, property/project boundaries, I lines,
proposed and existing contours, drainage areas, rrean high water line, wetlands, easements, the 30'
minimum vegetated buffer between impervious areas and surface waters, proposed impervious areas,
and road cross -sections.
Calculations of the- built -upon area, for subdivisions, please show the methodolony for arriving at the
per lot built -upon area. For non -subdivision projects, please break down the calculation into buildings,
roads, parking, and other (include all.itrpervious areas).
4. Low densit-yr projects with curb and gutter will require:
a. Drainage area delineation and swale locations shown on the plans.
b. Det_u of the Swale, showing minimum 5:1 side slope.
C. Velocity calculations, indicating a non -erosive flow for the 10 yr storm.
d, Inlet and outlet elevations. Maximum longitudinal slope is 5%.
e. ;he type of vegetated cover specified on the plans.
DEED RESTRICTION REQL1RZNZ TS
The following statements must be included for all low density- projects, and for all subdivisions:
See 0570
No more tlulz At.tacb,,d_ squareftervf azy lot, including :ha: portion of the right-of-way between the edge
of pavement and the front lot line, shall be covered by irnpenious structures, including asphalt, gravel,
concrete, brick, stone, slate or similar .material, not hzcluding wood decking or the water surface of swimming
pools. M.; covenant is intended to ensure continued compliance with the stormwater permit issued by Fhe. State,
of North Carolina. The cove=zr r, y not be changed or deleted w thour the consent of the State.
No one »azy fill in or pipe any roadside or lot -line swale, except as necessary to provide a minimum driveway
crossing.
For curb and gutter projects, no on may pipe, fill in, or alter any lot line swale used to meet North Carolina
Stormwarer Management Permit requirements.
NOTE I; lot sizes vary sitrnificantly, t; e owner/developer must provide an attachment listing each lot number, size,
and the allowable built -upon area for each lot.
.8129/97 WILMINGTON MARINE CENTER 9726
SLS Data for Attachment A
LOT No.
Size
Allowable Built-
upon Area sf
Ac
sf
1
1.44
62,726
53,317
2
1.58
68,825
58,501
3
1.09
47,480
40,358
4
1.00
43,560
37,026
5
1.04
45,302
38,507
6
0.92
40,075
34,064
7
0,95
41,382
35,175
8
1.01
43,996
37,396
9
1.G4 •
45,302
38,507
10
1.10
47,916
40,729
11
1.07
46,609
39,618
STORMWATER
E C E I V E
SEP
0 3 7997
PROD #-SUE$ ?� )?Z(
1 of 1
DIVISION OF WATER QUALITY
TE 9726
NORTH CAROLINA STORMWATER MANAGEMENT PERMIT APPLICATION
1. GENERAL INFORMATION
(Please print clearly or type)
1. Project Name Wilmington Marine Center
2. Location, directions to project (include County, Address, State Road) Attach map. New Hanover
County-, Intersection of River Road SR 1100 and Bryan Road SR 1115).
3. Owner's Name Port Cape Fear Associates Phone 910 395-5055
4. Owner's Mailing Address 3410 River Road
5. City Wilmington State NC Zip 28412
6. Nearest Receiving Stream Unnamed tributary, of Cape Fear River Class C SW
7. Project Description Commercial sub -division
H. PERMIT INFORMATION
1. Permit No. (lobe filled in by DWQ)
2. Application Date
07/02/97
Fee enclosed $ 385.00
3. Permit Type: X
New
Renewal Modification (existing Permit No.)
4. Project Type:
Low Density
Detention X Infiltration Redevelop General Alter Offsite
5. Other State/Federal Permits/Approvals Required (Check appropriate blanks)
6. CAMA Major Sedimentation/Erosion Control 404 Permit
III. BUILT UPON AREA (Please see NCAC 211.1005 thru .1007forapplicable density limits)
POND 41
POND 92
Drainage
Drainage
Breakdown of Impervious_ Area
Basin
Basin
(Please indicate below the design impervious area)
POND 41
POND 42
Classification
SW
C5W
Buildings NIA
5,600 sf
_C
Existing Built -upon Area
N/A
N/A
Streets 36,560 sf
15,774 sf
(Asphalt)
Proposed Built -upon Area
407,360 sf
75,390 sf_
Sidewalks 9,960 sf_
1,316 sf
(Concrete)
Total Project Area
528,353 sf
J103,380 sf_
Other _360,840 sf
52,700 sf
(85% imp./ lot) (85%
imp - Lot 1)
% Built -upon Area
77%
73%
Totals 407,360 sf
75,390 sf
1V. STORMWATER TREATMENT (Describe how the runoff will be treated)
Two 2 Infiltration Ponds
V.
DEED RESTRICTIONS AND PRTECTIVE COVENANTS
VI.
Deed restrictions and protective covenants are required to be recorded for all low density projects and all
subdivisions prior to the sale of any lot. Please see Attachment A for the specific items that must be recorded for
the type of project applied for.
By your signature below, you certify that the recorded deed restrictions and protective covenants for this project
shall include all the items required by the permit, that the covenants will be binding on all parties and persons
claiming under them, that they will run with the land, that the covenant cannot be changed or deleted without
concurrence from the State, and that they will be recorded prior to the sale of any lot.
OWNER'S CERTIFICATION
1, Nelson B. Ski Fa certify that the information included on this permit
(Please print clearly or type)
application form is correct, that the project will be constructed in conformance with the approved plans, that the
deed restrictions will be recorded with all required permit conditions, and that to the best of my knowledge, the
proposed project complies with the requirements of 15A NCAC 2H.1000.
the below named person or firm to submit stormwater plans on my behalf.
Owner/
Agent Signature and Title
VI1. AGENT AUTHORIZATION
Date
Person or firm name TrippEn ineerin P.C.
Mailing Address 507 Chestnut Street
City Wilmington State NC Zip 2840l Phone _(910) 763-5100
Please submit application, fee, plans and calculations to the appropriate Regional Office.
cc: Applicant/WiRO/Central Files
WATER
1E
JUL ? 4 1997
State of North Carolina
Vepartment of Environment
and Natural Resources
Wilmington Regional Off -ice
,Tames B. Hunt, Jr., Governor
Bill Holman, Secretary
Division of NN1,gter Quality
August 16, 2000
Mr. Marl: Johnson, President
Portwatch Owners Association
118 Port Watch Way
Wihninoton, NC 28412
Subject: Permit No. SWS 970721
Port Watch Subdivision
High Density Subdivision Stormwater Project
New Hanover County
Dear Mr. Johnson:
The Wilmington Regional Office received all required information to change the name and transfer the ownership and
m a intenan ce respons i b i I ity of th e Storm water Management Permit for Port Watch Subdivision on July14,2000. Staffreview
of the plans and specifications has determined that the project, as proposed, will comply with the Stormwater Regulations
set forth in Title 15A NCAC 211.1000. We are forwarding a copy of PermitNo. SW8 970721, originally issued on January
S. 1998, for the project, Port Watch Subdivision, formerly Wilmington Marine Center Commercial Subdivision.
The permit shall be effective from the date of issuance until January 8, 2008, and shall be subject to the conditions and
limitations as specified therein. Please pay special attention to the Operation and Maintenance requirements in this permit.
Failure to establish an adequate system for operation and maintenance of the stormwater management system will result in
future compliance problems.
If any parts, requirements, or limitations contained in this permit are unacceptable, you have the right to request an
adjudicatory hearing upon written request within thirty (30) days following receipt of this permit. This request must be in
the form of a written petition, conforming to Chapter 150B of the North Carolina General Statutes, and filed with the Office
of Administrative Hearings, P.O. Drawer 27447, Raleigh, NC 27611-7447. Unless such demands are made this permit shall
be final and binding.
If you have any questions, or need additional information concerning this matter, please contact Linda Lewis, or me at (910)
395-3900.
Sincerely,
Rick Shiver
Water Quality Regional Sunervisor
RSS/art: S:1WQSISTORMWA3IPER 41T1970721.AUG
cc: Phil Tripp, P.E.
Tony Roberts; Nexv Hanover County Inspections
Nelson Fry
Beth Easley, New Hanover County Engineering
Linda Lewis
Wilmington Regional Office
Central Fiies
127 Cardinal Dr. Ext., Wilmington, North Carolina 28405 'telephone 910-395-3900 FAX 910-350-2004
An Equal opportunity Affirmative Action Emplover 50;5. recycied/10% pos4-consumer parer