SW8980336_Current Permit_19980528

N
State of North Carolina
Department of Environment
and Natural Resources
Wilmington Regional Office
James B. Hunt, Jr., Governor
Wayne McDevitt, Secretary
Ms. Mary M. Gornto
City of Wilmington
Post Office Box 1810
Wilmington, North Carolina 28402
Dear Ms. Gornto:
NCDENK
NORTH CAROUNA DEPARTMENT OF
ENVIRONMENT AND NASURAL RESOURCES
May 28, 1998
Subject: Permit No. SW8 980336
Robert Strange Park Recreation Facility
Low Density Stormwater Project
New Hanover County
The Wilmington Regional Office received the Stormwater Management Permit Application for Robert Strange
Park Recreation Facility on March 20, 1998. 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 980336 dated May 28, 1998, for the construction of Robert Strange Park
Recreation Facility.
This permit shall be effective from the date of issuance until rescinded and shall be subject to the conditions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 adjudicafory 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 either Greg
Stutts or me at [phone].
Sincerely,
Rick Shiver, P.G.
Acting Regional Water Quality Supervisor
RSS/ges: S:\WQS\STORMWAT\PERMIT\980336.MAY
cc: John A. Kuske III, Andrew & Kuske
Tony Roberts, New Hanover County Inspections
Wilmington Regional Office
Central Files
Greg Stutts
Division of Coastal Management
127 Cardinal Drive Ext., Wilmington, North Carolina 28405 Telephone [phone] FAX [phone]
An Equal Opportunity Affirmative Action Employer 50% recycled/10% post -consumer paper

State Stormwater Management Systems
Permit No. SW8 980336
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
STATE STORMWATER MANAGEMENT PERMIT
LOW 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
City of Wtbnington
Robert Strange Park Recreation Facility
New Hanover County
FOR THE
construction, operation and maintenance of a 30 % low density development 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 for Robert
Strange Park Recreation Facility.
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
The total allowable built -upon area for the tract is 248,604 square feet. This permit covers the
construction of 31,243 sg7aare feet of built -upon area.
2. The overall tract built -upon area percentage for the project must be maintained at 30%, as
required by Section 1005 of the stormwater rules.
3. Approved plans and specifications for projects covered by this permit are incorporated by
reference and areenforceable parts of the permit.
4. The only runoff conveyance systems allowed will be vegetated conveyances such as swales
with minimum side slopes of 3:1 (H: V) or curb outlet systems as defined in the stormwater
rules and approved by the Division.
2

State Stormwater Management Systems
Permit No. SW8 980336
5. No piping shall be allowed except:
a. That minimum amount necessary to direct runoff beneath an impervious surface such as
a road.
b. That minimum amount needed under driveways to provide access to lots.
6. Projects covered by this permit will maintain a minimum 30 foot wide vegetative buffer
between all impervious areas and surface waters.
7. The tract will be limited to the amount of built -upon area indicated in the approved plans.
8. The permittee is responsible for verifying that the proposed built -upon area does not exceed
the allowable built -upon area.
9. The Engineer/Owner/Developer/Permittee must certify in writing that the project's stormwater
controls, and impervious surfaces have been constructed within substantial intent of the
approved plans and specifications. Any deviation from the approved plans must be noted on
the Certification.
10. 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.
11. Deed restrictions are incorporated into this permit by reference and must be recorded with the
Office of the Register of Deeds prior to construction. A copy of the recorded restrictions must
be received by this Office within 30 days of the date of recording. Recorded deed restrictions
must include, as a minimum, the following statements related to stormwater management:
"The maximum built -upon area is 248,604 square feet, inclusive of that portion of the
right-of-way between the front lot line and the edge of the pavement, strictures,
pavement, walkways of brick, stone, slate, but not including wood decking. "
"Construction of additional impervious area will require a permit modification. "
"The covenants pertaining to stormwater regulations may not be' changed or deleted
without concurrence of the State. "
"Filling in or piping of any vegetative conveyances (ditches, swales, etc.) associated
with the development except for average driveway crossings, is strictly prohibited by
any persons."
"Projects within CAMA's Area of Environmental Concern (AEC) are subject to a
reduction of the permitted amount of built -upon area due to CAMA jurisdiction within
the AEC. ,
3

State Stormwater Management Systems
Permit No. SW8 980336
12. The following items will require a modification to the permit. Revised plans, specifications
and calculations must be permitted prior to the permittee beginning construction on the
modification:
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 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.
U. SCHEDULE OF COMPLIANCE
1. The permittee shall comply with the following schedule for construction and maintenance of
the Low Density Option stormwater systems:
a. 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 except roads.
b. During construction, erosion shall be kept to a minimum and any eroded areas of the
swales or other vegetated conveyances will be repaired immediately.
2. The permittee shall at all times provide the operation and maintenance necessary to operate the
permitted stormwater management systems at optimum efficiency to include:
a. Inspections
b Sediment removal.
C. Mowing, and revegetating of the side slopes.
d. Immediate repair of eroded areas.
e. Maintenance of side slopes in accordance with approved plans and specifications.
3. The permittee shall submit recorded deed restrictions limiting built -upon area within 30 days
of the date of recording.
4. The permittee shall submit the Engineer/Owner/Designer/Permittee Certification within 30
days of completion of the project.
5. The permittee shall submit all information requested by the Director or his representative
within the time frame specified in the written information request.
:l

State Stormwater Management Systems
Permit No. SW8 980336
M. GENERAL CONDITIONS
1. 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, irx accordance with
North Carolina General Statutes 143-215.6A to 143-215.6C.
2. The permit issued shall continue in force and effect until 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 reissuance, 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.
5. The permit is not transferable to any person except after notice to and approval by the
Director. The Director may require modification or revocation and reissuance of the permit to
change the name and incorporate such other requirements as may be necessary. A formal
permit request must be submitted to the Division of Water Quality accompanied by the
appropriate fee, documentation from both parties involved, and other supporting materials as
may be appropriate. The approval of this request will be considered on its merits, and may or
may not be approved.
6. The permittee grants permission to DENR Staff to enter the property for the purpose of
inspecting all components of the stormwater management facility.
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.
Permit issued this the 28th day of May, 1998.
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
A. Preston Howard, Jr., P.E. , Director
Division of Water Quality
By Authority of the Environmental Management Commission
Permit Number SW8 980336
5

A&K #97388
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State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
This form may be photocopied for use as an original
I. GENERAL INFORMATION
1. Applicants name (specify the name of the corporation, individual, etc. who owns the project):
City of Wilmington
2. Print Owner/Signing Official's name and title (the person who is legally responsible for the facility and
its compliance):
Mary M. Gornto, City Manager - City of Wilmington
3. Mailing Address for person listed in item 2 above:
City of Wilmington, P.O. Box 1810
City: Wilmington State: NC Zip: 28402
Telephone Number: (910 )341-7810
4. Project Name (subdivision, facility, or establishment name - should be consistent with project name on
plans, specifications, letters, operation and maintenance agreements, etc.):
Robert Strange Park Recreation Facility
5. Location of Facility (street address):
Robert Strange Park -10th Street, Wilmington, NC 28401
City: Wilmington County: New Hanover
6. Directions to facility (from nearest major intersection):
The facility is 4 blocks south from the intersection of Market Street, US 17 and 10th Street
in downtown Wilmington
7. Latitude: 34° 13' 53"
Longitude:
770 56' 09"
of facility
Contact person who can answer qquestions about the facility:
Name: Gary Shell, Supt. of Operations -Public
Services & Facilities CLty of Wilmington Telephone Number: ( 910 )341-7855
Ii. PERMIT INFORMATION:
1. Specify whether project is (check one): X New Renewal Modification
2. If this application is being submitted as the result of a renewal or modification to an existing permit, list
the existing permit number and its issue date(if known)
Fonn SWU-101 January 1998 Page I of 4

3. Specify the type of project (check one):
X Low Density _ High Density Redevelop General Permit Other
4. Additional Project Requirements (check applicable blanks):
CAMA X Sedimentation/Erosion Control
III. PROJECT INFORMATION:
404 Permit
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.
The site is being
developed under the low density criteria. The stormwater will sheetflow
from the proposed impervious areas onto grassed areas and into grassed swales. The
swales will tie into the citV's existing drainage system.
2. Stormwater runoff from this project drains to the
3. Total Project Area:
19.03 acres
5. How many drainage basins does the project have?
Ca Re Fear
Total Park
4. Project Built Upon Area:
1
River basin.
18.18 %
6. Complete the following information for each drainage basin. If there are more than two drainage basins in
the project, attach an additional sheet with the information for each basin provided in the same format as
below.
............� -, -, M.
Receiving Stream Name
Burnt Mill C:reek
Receiving Stream Class
C SW
Drainage Basin Area
19.03 acres 29 3SF
Existing Impervious* Area
2.74 acres/ 119,30O SF
Proposed Impervious* Area
U.72--acres /31,243 SF
I
% Impervious* Area total
18.18%,
1
. . . . . •
I
"O
.0
03 a
On -site Buildings
26,293 SF
On -site Streets
17,950 SF
On -site Parking
48,300 SF
On -site Sidewalks
6,000 SF
Other on -site
52,000 SF
Off -site
N/A
Total:
Y-= S.-46 acres/ 150,543 SF
*Impervious area is defined as the built upon area including, but not limited to, buildings, roads, parking
areas, sidewalks, gravel areas, etc.
*OTHER ON -SITE = POOL AREA INCLUDING POOL AND TENNIS COURTS
7. How was the off site impervious area listed above derived: N/A
IV. DEED RESTRICTIONS AND PROTECTIVE COVENANTS
Deed restrictions and protective covenants and 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.
Form SWU-101 January 1998 Page 2 of 4

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 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. AGENT AUTHORIZATION
If you wish to designate submittal authority to another individual or firm so that they may provide
information on your behalf, please complete this section:.
Designated agent (individual or firm): Andrew & Kuske Consulting Engineers, Inc.
Mailing Address: 902 Market Street
City: Wilmington State: NC Zip: 28401
Phone: (910 ) 343-9653 Fax: (910 ) 343-9604
VI. SUBMITTAL REQUIREMENTS
This application package will not be accepted by the Division of Water Quality unless all of the
applicable items are included with the submittal.
1. Please indicate that you have provided the following required information by signing your initials in the
space provided next to each item.
• Original and one copy of. the Stormwater Management Permit Application Form
• One copy of the applicable Supplement Form(s) for each BMP (see Attachment A)
• Permit application processing fee (see Attachment A)
• Two copies of plans and specifications including:
• Detailed narrative description of stormwater treatment/management
• Two copies of plans and specifications, including:
— Development/Project name
— Engineer and firm
—Legend
— North arrow
— Scale
— Revision number & date
— Mean high water line
—Dimensioned property/project boundary
— Location map with named streets or NCSR numbers
— Original contours, proposed contours, spot elevations, finished floor elevations
—Details of roads, parking, cul-de-sacs, sidewalks, and curb and gutter
—Wetlands delineated, or a note on plans that none exist
— Existing drainage (including off -site), drainage easements, pipe sizes, runoff calculations
—Drainage basins delineated
— Vegetated buffers (where required)
VII. APPLICANT'S CERTIFICATION
I, (print or type name of person listed in General Information, item 2) Mary M. Gornto, City Manager
certify that the information included on this permit application form is correct, that the project will be
constructed in conformance with the approved plans, that the deed restrictions in accordance with Attachment
A of this form 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.
Signature: D` \ ,y \ ap AN N Date: Q
Title: City Manager
Form SWU-101 January 1998 Page 3 of 4

ATTACHMENT A
1. Deed Restriction Language
The following statements must be recorded for all low density projects and for all projects that involve the
subdivision and selling of lots or outpparcels: New Impervious Area = 31,243 SF
1. No more than-- square feet of any lot, including that portion of the right-of-way between
the edge of pavement and the front lot line, shall be covered by impervious structures including
asphalt, gravel, concrete, brick, stone, slate or similar material but not including wood decking or
the surface of swimming pools. This covenant is intended to insure continued compliance with the
stormwater permit issued by the State of North Carolina. The covenant may not be changed or
deleted without the consent of the State.
2. No one may fill in, pipe, or alter any roadside Swale except as necessary to provide a minimum
driveway crossing.
NOTE: If lot sizes vary significantly, the owner, developer must provide an attachment listing each lot
number, size and the allowable built -upon area for each lot.
For commercial projects that have outparcels or future development the following statements must also be
recorded:
3. The connection from the outparcel or future area into the stormwater system must be made into the
forebay such that short-circuiting of the system does not occur.
4. All built -upon area from the outparcel or future development must be directed into the permitted
stormwater control system.
5. Built -upon area in excess of the permitted amount will require a permit modification prior to
construction.
For curb outlet systems, the following statements in addition to items 1 and 2 above must be recorded:
6. No one may pipe, fill in or alter any designated 100 foot long grassed Swale used to meet the
requirements of NCAC 2H .1008(g).
2. Supplement Forms
The applicable supplement form(s) listed below must be submitted for each BMP specified for this project:
Form SWU-102
West 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 Nutrient Management Strategy Supplement
3. Permit Application Fees (Check made payable to NCDENR and submitted to the appropriate Regional
Office)
Type of Permit
Low Density
High Density
Other
Director's Certification
General Permit
New, Modification, or Late
Renewal
$225
$385
$225
$350
$50
Timely Renewal Without
Modification
n/a
$225
n/a
n/a
n/a
Form SWU-101 January 1998 Page 4 of 4

A&K #97388
Permit No.
(to be provided by DWQ)
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
STORMW A TER MANAGEMENT PERMIT APPLICATION FORM
LOW DENSITY SUPPLEMENT
This form may be photocopied for use as an original
A low density project is one that meets the appropriate criteria for built upon area and transports stormwater runoff
primarily through vegetated conveyances. Low density projects should not have a discrete stormwater collection
system as defined by 15A NCAC 2H .1002(18). Low density requirements and density factors can be found in
15A NCAC 2H .1005 through .1007.
I. PROJECT INFORMATION (please complete the following information):
Project Name: Robert Strange Park Recreation Facility
Gary Shell, Supt. of Operations -
Contact Person: Public Services & Facilities
Phone Number: ( 910 )341-7855
Number of Lots: N/A 0.72 acres/31,243 SF
New Impervious Area
H. BUILT UPON AREA
See the Stormwater Management Permit Application Attachment A for specific language that must be recorded in
the deed restrictions for all low density projects.
For uniform lot sizes, complete the following calculation in the space provided below where:
• SA Site area - the total project area above Mean High Water. Wetlands may be excluded when the
development results in high density pockets.
• DF Density Factor - the appropriate percent built upon area divided by 100.
• RA Road Area -the total impervious surface occupied by roadways.
• OA Other Area - the total area of impervious surfaces such as clubhouses, tennis courts, sidewalks, etc.
• No. Lots is the total number of lots in the subdivision.
• BUA/Lot is the computed allowable built upon area for each lot including driveways and impervious surfaces
located between the front lot line and the edge of pavement.
Calculation:
Total Project/Basin Area
Existing Impervious Area
Proposed Impervious Area
(SA x DF)-RA-OA
No. Lots
= 19,03 acres / 829,053 SF
= 2.74 acres / 119,300 SF
= 0.72 acres / 31,243 SF
Total % Impervious = 3.46 acres x 100 = 18.18 %
19.03 acres
= BUA
Lot
Form SWU-104 2/9/98 Page 1 of 2

III. REQUIRED ITEMS CHECKLIST
Initial in the space provided to indicate that the following requirements have been met and supporting
documentation is provided as necessary. If the applicant has designated an agent in the Stormwater Management
Permit Application Form, the agent may initial below.
Applicants Initials
Existing Drop Inlets
a. A 30 foot vegetative buffer is provided adjacent to surf ee waters. Projects in the Neuse
River Basin may require additional buffers.
b. Deed restriction language shall be recorded as a restrictive covenant. A copy of the recorded
document shall be provided to DWQ within 30 days of platting and prior to sale of any lots.
c. Built upon area calculations are provided for the overall project and all lots.
d. Project conforms to low density requirements within the ORW AEC (if applicable). [15A
NCAC 2H .1007(2)(b)]
Form SWU-104 2/9/98 Page 2 of 2

Li�dP�� oNJ�G�3�
CONSULTING ENGINEERS, INC.
John R. Andrew, P.E.
J. A. Kuske, P.E.
J. Phillip Norris, P.E.
902 Market Street * Wilmington, North Carolina 28401-4733 • Telephone [phone] • FAX [phone]
ROBERT STRANGE PARK RECREATION FACILITY
CITY OF WILMINGTON
LOW DENSITY STORMWATER MANAGEMENT PLAN
A&K PROJECT NO. 97388
The City of Wilmington is planning to build a new recreation facility located in
Robert Strange Park on loth Street. The existing site is currently a grassed
athletic field.
The proposed recreation facility is within the City of Wilmington limits and the
amount of land disturbed is approximately 2 acres. Therefore, the site will be
designed to comply with the City of Wilmington stormwater ordinance and the
State stormwater regulations. The City of Wilmington stormwater ordinance
will be addressed with the payment in lieu stormwater option and the State
regulations will be addressed with the low density stormwater option. The site
is 19.03 acres with 2.74 acres of existing impervious area and 0.72 acres of
proposed impervious area. This equates to 18.18% impervious coverage.
Therefore, the site is eligible for the State low density stormwater option.
Stormwater runoff will sheetflow from proposed impervious surfaces over
grassed areas into grassed swales. The grassed swales will convey the
stormwater into existing drop inlets on site. The grassed swales are in excess
of 100' in length, have sidcslopes no steeper than 5:1, and have a longitudinal
slope of less than five percent. Calculations and detailed plans of the erosion
control measures and the stormwater system are enclosed for review and
approval.