SW8931204_Historical File_20121205

ANXWA
NCURR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue Charles Wakild, P, E. Dee Freeman
Governor Director Secretary
December 5, 2012
Ms. Gail Duncan
130 Edinburgh South Drive
Cary, NC 27511
Subject: State Stormwater Management Permit No. SW8111002
Lot 1— Ocean Harbour Estates
Single Family Low Density Lot Permit
Brunswick County
Dear Ms. Duncan:
The Wilmington Regional Office received a complete modified Stormwater Management Permit Application for Lot 1
— Ocean Harbour Estates on October 26, 2012. 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 21-1.1000, effective
September 1,1995. We are forwarding Permit No. SW8111002, dated October 21, 2011, for the construction of the
built -upon area and permeable pavement associated with the subject project. This permit has been modified to be in
installed in compliance with the most recent version of the Best Management Practices (BMP) Manual's permeable
pavement design specifications which resulted in a smaller required permeable pavement surface area for this
project.
This permit shall be effective from the date of issuance until rescinded and shall be subject to the conditions and
limitations as specified therein, and does not supercede any other agency permit that may be required.
If any parts, requirements, or limitations contained in this permit are unacceptable, you have the right to request an
adjudicatory hearing by filing a written petition with the Office of Administrative Hearings (OAH). The written petition
must conform to Chapter 150B of the North Carolina General Statutes, and must be filed with the OAH within thirty
(30) days of receipt of this permit. You should contact the OAH with all questions regarding the filing fee (if a filing
fee is required) and/or the details of the filing process at 6714 Mail Service Center, Raleigh, NC 27699-6714, or via
telephone at 919-431-3000, or visit their website at www.NCOAH.com. 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 Kelly Johnson at
[phone].
Sinc ely
Charles Waild, P.E., Director
Division of Water Quality
GDS/kpj: S:\WQS\StormwatehPermits & Projects\201 1 \1 11002 LD\201212 permit 111002
cc: Donald M. Covil, PE, East Coast Engineering &Surveying, P.C.
Brunswick County Building Inspections
NCDOT District Engineer
Brunswick County Engineering
Wilmington Regional Office Stormwater File SW8111002
Wilmington Regional Office Stormwater File SW8 931204
Mr. Daniel Johnston, President Ocean Harbour Estates Association PO Box 4817
Calabash, NC 28467 (SW8 931204 perm/ttee)
Wilmington Regional office
127 Cardinal Drive Extension, Wilmington, North Carolina 28405 nee. ti1'. ,
Phone: [phone] \ FAX: [phone] \ DENR Assistance: 1-877-623-6748 01 Carolftia.
Internet: www.ncmterquality.org Nahmia/lk
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State Stormwater Management Systems
Permit No.SW8 111002
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
STATE STORMWATER MANAGEMENT PERMIT
SINGLE FAMILY LOW DENSITY LOT 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
Gail Duncan
Lot 1— Ocean Harbour Estates
1318 Harbour Watch SW, Calabash, Brunswick County
FOR THE
construction, operation and maintenance of a single family lot with permeable pavement
within the previously permitted Ocean Harbour Estates under SW8 931204, (in compliance
with the provisions of Title 15A NCAC 2H .1000, effective September 1, 1995 (hereafter
collectively and separately 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.
The Permit shall be effective from the date of issuance until rescinded and shall be subject
to the following specific conditions and limitations:
I. DESIGN STANDARDS
Per SW8 931204, each lot in Section Ocean Harbour Estates is limited to a
maximum of 5,300 square feet of built -upon area (BUA).
2. Deed restrictions for SW8 931204, were recorded on March 16, 1994 in Deed Book
973 at Page 356 of the Brunswick County Register of Deeds office.
3. This permit covers the construction of a total of 5,300 square feet of built -upon area
as summarized below.
Total Impervious (Surface Areas without Permeable Pavement Credit)
6,134
ft'
Buildings
4,846
ft2
Non -Permeable Pavement
176
ftz
Permeable Pavement (Surface Area Being Proposed)
1,112
ftZ
Treated as Grass (75%)
834
ftZ
Treated as Impervious (25%)
278
ftz
Total Impervious (After Permeable Pavement Credit)
5,300=4,846+176+278sf
5,300
ft2
Page 2 of 5

State Stormwater Management Systems
Permit No.SW8 111002
4. This permeable pavement shall be constructed of Permeable Interlocking Concrete
Pavers (PICP) with a 5.5" washed stone gravel base, which is assigned a 75%
managed grass credit.
5. The soils under the permeable pavement must maintain a minimum hydraulic
conductivity of 0.52" per hour, and the Seasonal High Water table must be a
minimum of 2 feet below the bottom of 5.5" washed stone layer.
6. The slope of the completed permeable pavement must be 0.5% or less.
7. Approved plans and specifications for projects covered by this permit are
incorporated by reference and are enforceable parts of the permit.
8. The lot must maintain a minimum 30-foot-wide vegetated buffer between impervious
areas and surface waters, measured horizontally from and perpendicular to the
normal pool of impounded structures, the top of bank of each side of streams and
rivers, and the mean high water line of tidal waters. No built -upon area may be
located within the buffer.
9. All runoff directed into and through the vegetative buffer must flow through the buffer
in a diffuse manner.
10. The only runoff conveyance systems allowed will be vegetated conveyances such as
swales with minimum side slopes of 3:1 (H:V) as defined in the stormwater rules and
approved by the Division.
11. All roof drains must terminate at the edge of the 30' buffer and must flow through the
buffer in a diffuse manner.
II. SCHEDULE OF COMPLIANCE
1. The permeable pavement must be protected during construction such that no
sediment -laden runoff is directed across the permeable pavement surface.
2. No direct or concentrated runoff from roof gutters or other surfaces is allowed to be
discharged onto the permeable pavement.
3. To achieve the 75% managed grass credit, a minimum 5.5" washed aggregate base
must be provided under the permeable pavement.
4. No more than 100 axles per day (50 cars) shall be allowed on the permeable
pavement surface.
5. Trees overhanging the permeable pavement should be avoided.
6. Special care must be taken to avoid compaction of the underlying subgrade soils
during installation of the permeable pavement.
7. Swales and other vegetated conveyances shall be constructed in their entirety,
vegetated, and be operational for their intended use prior to the construction of any
built -upon surface.
8. During construction, erosion shall be kept to a minimum and any eroded areas of the
swales or other vegetated areas or conveyances will be repaired immediately.
9. The permittee shall at all times provide and perform the necessary operation and
maintenance procedures as specified in the signed Operation and Maintenance
Agreement, such that the permeable pavement system functions as designed and
permitted.
Page 3 of 5

State Stormwater Management Systems
Permit No.SW8 111002
10. The permittee shall submit to the Director and shall have received approval for
revised plans, specifications, and calculations prior to construction, for any
modification to the approved plans, including, but not limited to, those listed below:
a. Any revision to any of the items shown on the approved plans, including the
stormwater management system, design concept, built -upon area, details, etc.
b. Redesign or addition to the approved amount of built -upon area or to the
drainage area.
C. Further subdivision, acquisition, or selling of the project area.
d. Filling in, altering or piping any vegetative conveyance shown on the approved
plan.
11. The permittee shall submit all information requested by the Director or his
representative within the time frame specified in the written information request.
12. No piping shall be allowed except that minimum amount necessary to direct runoff
beneath an impervious surface such as a road and that minimum amount needed
under driveways to provide access to lots.
13. The permittee is responsible for verifying that the lot's proposed built -upon area does
not exceed the allowable built -upon area. The maximum allocated built -upon area
for the lot may not be revised without approval from the Division of Water Quality. If
the allocated maximum built -upon area on the lot is exceeded without approval of the
permittee and the Division, the lot owner is subject to enforcement action by the
Division of Water Quality.
14. Within 30 days of completion of the project, the permittee must certify in writing that
the permeable pavement has been constructed within substantial intent of the
approved plans and specifications. Any deviation from the approved plans must be
noted on the Certification.
15. This lot is subject to the deed restrictions which have been previously recorded for
permit number SW8 931204, in Deed Book 973 at Page 356 of the Brunswick
County Register of Deeds office.
16. The Director may notify the permittee when the permitted site does not meet one or
more of the minimum requirements of the permit. Within the time frame specified in
the notice, the permittee shall submit a written time schedule to the Director for
modifying the site to meet minimum requirements. The permittee shall provide
copies of revised plans and certification in writing to the Director that the changes
have been made.
III. GENERAL CONDITIONS
Failure to abide by the conditions and limitations contained in this permit may subject
the Permittee to an enforcement action by the Division of Water Quality, in
accordance with North Carolina General Statutes 143-215.6A to 143-215.6C.
2. The permit issued shall continue in force and effect until modified, revoked or
terminated.
3. The permit may be modified, revoked and reissued or terminated for cause. The filing
of a request for a permit modification, revocation and re -issuance, or termination
does not stay any permit condition.
4. The issuance of this permit does not prohibit the Director from reopening and
modifying the permit, revoking and reissuing the permit, or terminating the permit as
allowed by the laws, rules, and regulations contained in Title 15A of the North
Carolina Administrative Code, Subchapter 2H.1000; and North Carolina General
Statute 143-215.1 et. al.
Page 4 of 5

State Stormwater Management Systems
Permit No.SW8 111002
5. The permit is not transferable to any person or entity except after notice to and
approval by the Director. The Director may require modification or revocation and re -
issuance of the permit to change the name and incorporate such other requirements
as may be necessary. At least 30 days prior to a change of ownership, or a name
change of the permittee or of the project, or a mailing address change, the permittee
shall submit a completed and signed Name/Ownership Change Form to the Division
of Water Quality accompanied by the supporting documentation as listed on the
form. The approval of this request will be considered on its merits, and may or may
not be approved.
6. The permittee is responsible for compliance with all permit conditions until such time
as the Division approves the permit transfer request. Neither the sale of the project
nor the conveyance of common area to a third party constitutes an approved transfer
of the stormwater permit.
7. 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. If any of
those permits result in revisions to the plans, a permit modification must be
submitted.
8. The permittee grants permission to DENR Staff to enter the property during business
hours for the purposes of inspecting the stormwater management system and its
components.
9. Unless specified elsewhere, permanent seeding requirements for the swales must
follow the guidelines established in the North Carolina Erosion and Sediment Control
Planning and Design Manual.
10. This permit does not take the place of a review and approval with the subdivision's
established Architectural Standards by the Rivers Edge HOA/POA. This permit is
only intended as approval of the amount of net, effective built -upon area and the
permeable pavement installation.
Permit issued this the 5t" day of December 2012
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
DES
arles Wa d, P.E., Director
Division of Water Quality
By Authority of the Environmental Management Commission
Permit Number SW8 111002
Page 5 of 5