SW8931105_Historical File_20010412

North Carolina
Department of Environment and Natural Resources
Division of Water Quality
Wilmington Regional Office
Michael F. Easley, Governor
William G. Ross, Jr., Secretary
April 12, 2001
Mr. Maurice Emmert, General Partner
Greenbriar South Partnership
99 Aqua Vista Drive
Wilmington, NC 28409
Sri ' �► _ :, ...,. j
RCDENR
NORTH CAROLINA DEPARTMENT OF
ENVIRONMENT AND NATURAL RESOURCES
Subject: Pool/Clubhouse Construction
Greenbriar South
Stormwater Project No. SW8 931105
New Hanover County
Dear Mr. Emmert:
The Division received your application for a modification to the Stormwater Permit for Greenbriar South
on April 11, 2001. It has been the policy of the Division that if future area was accounted for in the design of the
stormwater facility, a modification to construct the future area is not needed. For projects where the future area is
accounted for in the original permit, and ownership has not changed, the Division will require a cover letter, 2 sets
of plans and a calculation sheet showing that the proposed BUA is less than or equal to what was accounted for in
the original permit. No fee is required.
The original permit, dated September 14, 1998, allotted 21,700 ft2 for the pool and clubhouse construction,
to drain to Pond 42.. The plans submitted propose 15,484 ft2, leaving 6,216 ft2 available for additional future
construction. All terms and conditions of the original permit remain in full force and effect.
Enclosed please find an approved plan and your check for $420.00. If you have any questions, please do
not hesitate to call me at [phone].
Sincerely,
d"I("
Linda Lewis
Environmental Engineer
RSS\arl: S:\WQS\STOR.MWAT\LETTERS\SW8 931105.APR
cc: Linda Lewis
Tony Roberts, New Hanover County Building Inspections
Mark Hargrove, P.E.
Wilmington Regional office
Central Files
127 Cardinal Dr. Ext., Wilmington, North Carolina 28405 Telephone [phone] FAX [phone]
An Equal Opportunity Affirmative Action Employer 50% recycled/10% post -consumer paper

W K RECMk
D
ICKSON APR
Engineers • Plgnners • Surveyors 11 z001
LanAscape Architects
April 10, 2001
Ms. Linda Lewis
North Carolina Department of Environment
and Natural Resources
Division of Water Quality Section
127 Cardinal Drive Extension
Wilmington, North Carolina 28405
RE: Greenbriar South Subdivision
New Hanover County
NCDWQ Project Number 931105
WKD Project Number 10235.00WL
Dear Ms. Lewis:
The developer of the above mentioned project has decided to construct the pool/clubhouse
and pool in the area previously noted on the plans. Therefore, we are having to submit for a
modification to the above -mentioned project to accurately inform you of the amount of
impervious area that is proposed for the pool/club house area.
After designing the pool/clubhouse area, the amount of impervious area is less than what was
originally permitted. In the previous approval we had allocated 21,700 square feet of
impervious area. The plans provided show 15,484 square feet of impervious area. Thus, the
pond currently designed is still sufficiently sized for this drainage area.
Included in the submittal package are the following items:
- original completed stormwater application and one copy for the referenced project
- $420.00 application fee for modification
- two (2) copies of the calculations
- two (2) copies of plans:
C-1 Grading and Erosion Control, dated April 2, 2001
C-2 Utility Plan, Dimensioned Layout and Paving Plan, dated April 2, 2001
C-3 Miscellaneous Details, dated April 2, 2001
909 Market Street 910.762.4200 Atlanta, GA Hickory, NC
Wilmington, North Carolina Fax [phone] Asheville, NC Raleigh, NC
28401 www.wkdickson.com Charlotte, NC Columbia, SC

Ms. Linda Lewis
April 10, 2001
Page 2 of 2
If you need additional information please feel free to call.
Sincerely,
W.K. DICKSON & CO., INC.
Ak /Vi/v w
Mark N. Hargro�PE
Enclosure: As noted above
cc: Greenbriar South Partnership

OFFICE USE ONLY
Date Received
Fee Paid
Permit Number
a t0
�,
�.. 6 131/0
State of North Carolina
Department of Environmental and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
This form may be photocopied for use as an original
I. GENERAL INFORMATION
1. Applicants name (specify the name of the corporation, individual, etc. who owns the project):
Greenbriar South Partnership
2. Print Owner/Signing Official's name and title (person legally responsible for facility and compliance):
Maurice S. Emmart, Jr. — General Partner
3. Mailing Address for person listed in Item 2 above:
99 Aqua Vista Drive
City: Wilmington State: NC
Telephone Number: [phone]
Zip: 28409
4. Project Name (subdivision, facility, or establishment name — should be consistent with project name on plans,
specifications, letters, operation and maintenance agreements, etc.):
Greenbriar South
5. Location of Project (street address):
Located at intersection of Coronada Drive and Burning Tree Road
City: Wilmington
County: New Hanover
6. Directions to project (from nearest major intersection):
± %z mile north of intersection of NC 132 and Carolina Beach Road
7. Latitude:. 34' 08' 30" Longitude: 770 52' 45" of project.
8. Contact person who can answer questions about the project::
Name: Mmirir.P R F.mmnrt, Tr Telephone Number: (91 n) 791-??Q4
H. PERMIT INFORMATION:
1. Specify whether project is (check one): New Renewal X Modification
Form SWU-101 Version 3.99 Page 1 of 4

2. If this application is being submitted as the result of a renewal or modification to an existing permit, list the
existing permit number 5W- .'8 931105 Aod and its issue date (if known) . September 14, 1998
3. Specify the type of project (check one):
Low Density X High Density Redevelop General Permit Other
4. Additional Project Requirements (check applicable blanks):
CAMA Major X Sedimentation/Erosion Control 404/401 Permit NPDES Stormwater
Information on required state permits can be obtained by contacting the Customer Service Center at
1-877-623-6748
III. PROJECT INFORMATION
1. In the space provided below, summarize how stormwater will be treated. Also attach a detailed narrative
(one to two pages) describing stormwater management for the project.
Stormwater runoff will be directed to the collection system draining into the previously permitted
drainage basin number 2.
2. Stormwater runoff from this project drains to the Cape Fear
3. Total Project Area: 46.04 acres.
4
5.
G�
Project Built Upon Area: 33.93 %.
How many drainage areas does the project have? 2
River Basin.
Complete the following information for each drainage area. If there are more than two drainage areas in the
project, attach and 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
Unnamed tributary to Motts
Creek
Unnamed tributary to Motts Creek
Receiving Stream Class
CS'W
CSW
Drainage Area
52.07
3.87
Existing Impervious*Area
-0-
-0-
Proposed Impervious* Area
17.54
3.13
% Impervious* Area (Total)
33.7%
35.3%
Impervious* Surface Area
Drainage Area 1
Drainage Area 2
On -Site Buildings and Driveways
340,375 SF
77,950 SF
On -Site Streets
178,499 SF
42,725 SF
On -Site Parking
N/A
N/A
On -Site Sidewalks
N/A
N/A
mite Poet/Clubhouse
N/A
15,484 SF
Off -Site
227,165 SF
Total!t'=746,039 SF = 17.13 Ac
Total: 136,159 SF = 3.1 Ac
*Impervious area is defined as the built upon area including, but not limited to, buildings, roads, parking areas,
sidewalks, gravel areas, etc.
Form SWU-101 Version 3.99 Page 2 of 4

7. How was the off -site impervious area listed above derived?
IV. DEED RESTRICTIONS AND PROTECTIVE COVENANTS
The following italicized deed restrictions and protective covenants are required to be recorded for all
subdi risions, out parcels, and fature 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 compliance with state stormwater management
permit number 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 square feet of any lot shall be covered by structures or impervious materials.
Impervious materials include asphalt, gravel, concrete, brick, stone, slate or similar material but not include
wood decking or the water surface of swimming pools. `See previous restrictions.)
3. Swales shall not be filled in, piped, or altered except as necessary to provide driveway crossings.
4. Built -upon area in excess of the permitted amount requires a state stormwater management permit
modification prior to construction.
5. All permitted runoff from the outparcels or future development shall be directed into the permitted
stormwater control system. These connections to the stormwater control system shall be performed in a
manner that maintains the integrity and performance of the system as permitted.
By your signature below, you certify that the recorded deed restrictions and protective covenants for this project
shall include all the applicable items required above, that the covenants will be binding on all parties and persons
claiming under them, that they will run with the land, that the required covenants cannot be changed or deleted
without concurrence from the State, and that they will be recorded prior to the sale of any lot.
V. STTPPl[,EWNT FORMS
The applicable state stormwater management permit supplement form(s) listed below must be submitted for
each BMP specified for this project. Contact the Stormwater and General Permits Unit at [phone] for
the status and availability of these forms.
Form SWU-102
Wet Detention Basin Supplement
Form SWU-103
Infiltration Basin Supplement
Form SWU-104
Low Density Supplement
Form SWU-105
Curb Outlet System Supplement
Form SWU-106
Off -Site System Supplement
Form 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 4

VI. SUBNHTTAL 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.
1. 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 A Al
• One copy of the applicable Supplement Form(s) for each BMP A
• Permit application processing fee of $420 (payable to NCDENR) pf
• Detailed narrative description of stormwater treatment/management MN
• Two copies of plans and specifications, including: M'V#
- Development/ Project name
- Engineer and firm
- Legend
- North arrow
- Scale
- Revision number & date
Mean high water line
- Dimensioned property/project boundary
- Location map with named streets or NCSR numbers
- Original contours, proposed contours, spot elevations, finished floor elevations
- Details of roads, drainage features, collection systems, and stormwater control measures
- Wetlands delineated, or a note on plans that none exist
- Existing drainage (including off -site), drainage easements, pipe sizes, runoff calculations
- Drainage areas delineated
- Vegetated buffers (where required)
VH. AGENT AUTHORIZX110N
If you wish to designate authority to another individual or firm so that they may provide information on your
behalf, please complete this section.
Designated agent (individual or firm): W. K. Dickson & Co., Inc.
Mailing Address: 909 Market Street
City Wilmington
Phone: [phone]
State: NC
VIII. APPLICANT'S CERTIFICATION
Zip: 28401
Fax: [phone]
I, (print or type name of person listed in General Information, Item 2) Maurice S. Emmart, Jr.
certify that the information included on this permit application form is, to the best of my knowledge, correct and
that the project will be constructed in conformance with the approved plans, that the required deed restrictions and
protective covenants will be recorded, and that the proposed project complies with the requirements of 15A
NCAC 2H.1000.
I
WIW-2 . �.ZRVA
IA
Date:
Form SWU-101 Version 3.99 Page 4 of 4

STORMWATER CALCULATIONS
FOR
GREENBRIAR SOUTH SUBDIVISION
WILMINGTON, NORTH CAROLINA
RECEIVED
APR 1 t 2001
D
PROJ # //v 5
PREPARED BY
WK DICKSON
909 MARKET STREET
WILMINGTON, NC 28401
(910) 7624200
April 10, 2001

WK DICKSON
Engineering
Land Planning
Surveying
909 Market Street
Wilmington, NC 28401
[phone]
TOTAL SITE AREA THREE = 8.87 ACRES
TOTAL AREA DRAINING TO NEW POND = 386,174 SF
= 8.87 ACRES
TOTAL PROPOSED IMPERVIOUS SURFACE
AREA DRARVING TO POND:
ROADS
REMAINING IMPERVIOUS AREA
19 LOTS AT 3,200 SF/LOT ALLOWED
1 LOT AT 4,900 SF/LOT
3 1/2 LOTS AT 3,500 SF/LOT ALLOWED
POOL HOUSE AREA
TOTALS
% IMPERVIOUS = 3.13/8.87 = 35.3%
= 42,725 SF
= 60,800 SF
= 4,900 SF
=12,250 SF
=15,484 SF
=136,159 SF = 3.13 ACRES
REQUIRED STORAGE FOR 1-INCH OF RUNOFF FOR POND: (use Schueler Method)
= 0.05 + 0.009 (I)
= 0.05 + 0.009(35.3) = 0.368
= (1")(0.368)(1/12)(8.87)(43,560)
=11,849 CF (12,781 CF PROVIDED)
REQUIRED STORAGE FOR FOREEAY: 20% OF FIRST 1-INCH RUNOFF
= (0.2)(11,849)
= 2,369 CF (5,809 CF PROVIDED)
PERCENT IMPERVIOUS DRAINAGE AREA FOR POND:
= 35.3 %
POND DEPTH SA/DA %
(FT)
4.0 3.12
POND SURFACE AREA (MIN.)
(SI+)
IF POND DEPTH = 4.0 FT, MINIMUM SURFACE AREA=12,049 SF
USED 90% TSS CHART TO SIZE POND
AREA @ ELEVATION 21.50 = 16,396 SF > 12,049 SF
12,049
Revised 03/30/01
PROJECT: GREENBRIAR SOUTH SUBJECT: POND CALCULATIONS JOB NO.: 9701
PREPARED BY: DATE: CHECKED BY: DATE: PAGE NO OF

WK DICKSON
Engineering
Land Planning
Surveying
909 Market Street
Wilmington, NC 28401
[phone]
Revised 03/30/01
PROJECT: GREENBRIAR SOUTH SUBJECT: POND CALCULATIONS JOB NO.: 9701
PREPARED BY: DATE: CHECKED BY: DATE: PAGE NO OF

WK DICKSON
Engineering
Land Planning
Surveying
909 Market Street
Wilmington, NC 28401
[phone]
Revised 03/30/01
PROJECT: GREENBRIAR SOUTH SUBJECT: POND CALCULATIONS JOB NO.: 9701
PREPARED BY: DATE: CHECKED BY: DATE: PAGE NO OF

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STORMWATER CALCULATIONS
•e
GREENBRIAR SOUTH SUBDIVISION
WILMINGTON, NORTH CAROLINA
I
PREPARED BY
WK DICKSON
909 MARKET STREET
WILMINGTON, NC 28401
[phone]
February 4, 1998
(Revised 9/8/99 )
ENGINEERING

Engineering
Land Planning
Surveying
TEMPORARY SEDIMENT TRAP #6 w/ SILT BASIN
DISTURBED AREA = 93,428 SF = 2.14 AC
MIN. STORAGE = 1,800 CF/ACRE
REQ. STORAGE = 3,861 CF
CLEAN OUT TWICE PER YEAR = 1,930 CF
LENGTH = 77 FT
WIDTH = 5 FT
DEPTH = 5 FT
TEMPORARY SEDIMENT TRAP #7 w/ SILT BASIN (Revised 9/8/99)
DISTURBED AREA = 108,369 SF = 2.49 AC
MIN. STORAGE = 1,800 CF/ACRE
REQ. STORAGE = 4,478 CF
CLEAN OUT TWICE PER YEAR = 2,239 CF
LENGTH = 80 FT
WIDTH = 7 FT
DEPTH = 4 FT
Revised 4/28/98
Revised 9/8/99
WK DICKSON
909 Market Street
Wilmington, NC 28401
[phone]
PROJECT: GREENBRIAR SOUTH SUBJECT: VELOCITY CALCULATIONS JOB NO.: W9701.80
PREPARED BY. r0#V 1 - DATE: 9Lt? ?I CHECKED BY: DATE: PAGE NO OF �