SW8990421_CURRENT PERMIT_20000111

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SWJ27G"Za'
DOC TYPE
� CURRENT PERMIT
❑ APPROVED PLANS
❑ HISTORICAL FILE
❑ COMPLIANCE EVALUATION INSPECTION
DOC DATE-
YYWMMDD

State of North Carolina
Department of Environment
and Natural Resources
Wilmington Regional Office
Jalnes B. Hunt, Jr., Governor
Bill Holzman, Secretary
Division of Water Quality
January H, 2000
Ms. Mary Gornto, City Manager
City of Wilmington
PO Box 1810
Wilmington, NC 28402
Subject: Permit No. SW8 990421
Park Avenue Right -of -Way Improvements
High Density Stormwater Project
New Hanover County
Dear Ms. Gornto:
The Wilmington Regional Office received a complete Stormwater Management Permit Application for Park Avenue
Right -of -Way Improvements on December 29, 1999. 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 990421 dated January 11, 2000, for the construction of Park Avenue Right -of
Way Improvements. This permit supersedes the one issued to you on January 4, 2000.
This permit shall be effective from the date of issuance until January 11, 2010, and shall be subject to the conditions
and limitations as specified therein. Please pay special attention to the Operation and Maintenance requirements
in this permit. Failure to establish an adequate system for operation and maintenance 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 fonn of a written petition, conforming to Chapter 15OB of the North Carolina General Statutes, and filed
witll the Office of Administrative Hearings, P.O. Drawer 27447, Raleigh, NC 27b11-7447. 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 [phone].
Sincerely,
Rick Shiver
Water Quality Regional Supervisor
RSS/arl: S:1WQSISTORMWATIPERM1T1990421.3AN
cc: Greg Hetzler, P.E.
Tony Roberts, New Hanover County Inspections
Beth Easley, New Hanover County Engineering
David Mayes, P.E., City of Wilmington
Linda Lewis
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°/a post -consumer paper

State � `orfnwater Management Systems
Permit No. SW8 990421
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
City of Wilmington
Park Avenue Might -of -Way Improvements
New Hanover County .
FOR THE
construction, operation and maintenance of 4 bio-retention areas 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 11, 2010 and shall be subject to the following
specified conditions and limitations:
I. DESIGN STANDARDS
i. This permit is effective oixly 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
4 of this permit, the Project Data Sheet. Each of the Bio-Retention basins has been designed to handle the
runoff from a limited amount of built -upon area, as follows: Basin 1 @19,722 ftZ; Basin 2 @19,206 f12;
Basin 3 @23,448 ftz; and Basin 4 @27,245 ft2. These built -upon areas include offsite residential
development.
Approved plans and specifications for this project are incorporated by reference and are enforceable parts
of the permit.
4. The drainage area will be limited to the amount of built -upon area indicated on page 4 of this permit, and
per approved plans. The drainage areas shown on the approved plans include offsite areas.
The drainage area for each bio-retention basin must be less than 5 acres.
2

5 S#a` 'tormwater Management Systems
Permit No. SW8 990421
6. The minimum width for each bio-retention area must be 15'. The minimum length for each bio-retention area
must be 40'. For widths greater than 20', the length must be at least twice the width.
7. The minimum required surface area for each bio-retention basin must be 7% of the combined Rational runoff
coefficient multiplied by the drainage area.
8. The minimum required volume for each bio-retention basin must be based on the 1,5" storm.
9. The drawdown time for each bio-retention basin must be less than 4 days.
y: 10. For an average tree spacing of IT, and an average shrub spacing of 8', the minimum stem count for each
bio-retention area is 1,000 trees and shrubs per acre of drainage area.
x` 11. There must be at least 2 or 3 shrubs provided for each tree.
Y 1'.
R'
p,a .
12. A rninimuni of three (3) species of trees and three (3) species of shrubs inust be provided in each bio-
retention basin to ensure diversity.
13: ' At installation, trees must be a minimum of 2.5" caliper. Shrubs must be at least 3 or 4 feet in height or have
` an 18"-24" spread.
air
4
3

State •ormwater Management Systems
Permit No. SW8 990421
DIVISION OF WATER QUALITY
PROJECT DESIGN DATA SHEET
Project Name:
Park Avenue Right -of -Way Improvements
Permit Number
SW8 990421
i
E Location:
f
New Hanover County
4
Applicant:
Ms. Mary Gornto, City Manager
Mailing Address:
City of Wilmington
PO Box 1810
Wilmington, NC 28402
Application Date:
December 29, 1999
Name of Receiving Stream/Index #:
Hewletts Creek / (CFR 18-87-26)
Classification of Water Body,
Y
" SA
Bio-Retention Basin Number:
1 2
3
4
l
Pond Depth, feet:
i
6" 6t'
6"
61%
j Drainage Area, ft-:
}
87,120 91,476
129,373 .
96,268
Dimensions, L x W, ft.:
18 x 195 21 x 185
15 x 310
15 x 220
Total Impervious Surfaces, ft":
19,722 19,206
23,448
27,245
Offsite Area entering Pond, W:
7,709 7,709
7.709
7,709
Required Surface Area, ft2:
1,951 2,241
2,989
2,695
Provided Surface Area, ft2:
3,$40 4,160
3,840
2,840
!? Required Storage Volume, ft3:
2,759 2,733
3,428
3,666
Provided Storage Volume, ft':
2,004 4,160
3,840
3,840
Draw Down Time, hours:
3.5 3.6
3.5
3.4
Miiumum Stern Count:
35 a8
35
35
Number of Trees provided:
12 11
24
15
Number of Shrubs provided:
243 274
373
185
2

Star 'tormwater Management Systems
Permit No. SW8 990421
11. SCHEDULE OF COMPLIANCE
1. The stormwater management system shall be constructed in it's entirety, vegetated and operational for its
intended use as soon as possible after the road has been paved. Temporary approved Erosion Control
measures must be constructed and maintained prior to the bio-retention areas being constructed.
2. During construction, erosion shall be kept to a minimum and any eroded areas of the system will be repaired
immediately.
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 flan must
be followed in its entirety and maintenance must occur at the scheduled intervals including, but not limited
to;
a. Monthly scheduled inspections.
b. Remulch any void areas by hand when needed.
C. Every two to tluee years replace the previous mulch layer.
d. Immediate repair of eroded areas.
e. Maintenance of side slopes in accordance with approved plans and specif cations.
f Debris removal within the collection system, swales, and basin areas.
g. -Access to each basin must be available at all times.
h. At least twice a year, preferably in the spring and fall, remove and replace all dead or diseased
vegetation.
i. As needed, treat diseased trees and shrubs.
j. Provide sufficient irrigation to ensure that the plant life will live.
k. Annually, preferably in the spring, replace support stakes as needed.
4. Records of maintenance activities rnust.be kept and made available upon request to authorized personnel
ofDWQ. The records will indicate the date, activity, name of person performing the work and what actions
were taken.
The facilities shall be constructed as shown on the approved plans. 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,
6. 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 fxom the approved plans and
specifications must be noted on the Certification.
If the stormwater system was used as an Erosion Control device, it must be restored to design condition prior
to operation as a stormwater treatment device, and prior to occupancy of the facility.
8. 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, acquisition, orsale of the project area. The project area is defined as all property
owned by the permittee, for which Sedimentation and Erosion Control Plan approval was sought.
f. Filling in, altering, or piping of any vegetative conveyance shown on the approved plan.

Sta' itor mwater Management Systems
Permit No. SW8 990421
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.
10. Prior to the sale of any portion of the property, an access/maintenance casement to the stormwater facilities
shall be granted in favor of the permittee if access to the stormwater facilities will be restricted by the sale
of any portion of the property.
11. The permittee is responsible for verifying that the proposed built -upon area does not exceed the allowable
built -upon area.
12. The runoff from all built -upon area on the project must be directed into the permitted stormwater control
system.
13, 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 awritten
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.
-Ilf GCNERAL CONDITIONS
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 formal permit request must be submitted to the Division of Water
Quality accompanied by an application fee, documentation from the parties involved, and other supporting
materials as may be appropriate. The approval of this request will be considered on its merits and may or
may not be approved.
?. 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.
The permittee grants DENR Staff permission to enter the property for the purpose of inspecting all
components of the permitted stormwater management facility.
The permit may be modified, revolted 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.
Permit issued this the 1 Ith day of January, 2000.
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
�1 Kerr T. Stevens, Director
Division of Water Quality
By Authority of the Environmental Management Commission
Permit Number SW8 990421.
no

- — — - OFFICE USE ONLY -----
Date Receivgd ee Paid Pe it dumber
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. Applicant's name (specify the name of the corporation, individual, etc. who owns the project);
City of Wilmington
2. Print Owners/Signing Official's name and title (the person who is legally responsible for the facility and
its compliance):
Mary Gornto, City Manager
3. Mailing Address for person listed in item 2 above:
PO Box. 1810, 138 North Front Street
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.):
Park Avenue, R.O.W. improvements, Wallace Avenue to 52nd Street
5. Location of Facility (street address):
Park Avenue - Wallace Avenue to 52nd Street
City; Wilmington County: New Hanover
6. Directions to facility (from nearest major intersection):
'From College and Oleander Drive, go .75 miles East on Oleander, left (North) onto Wallace Avenue,
0.2 miles North to Park Avenue
7. Latitude: 34.2 Longitude: 77.9 of facility
8. Contact person who can answer questions about the facility:
Name: Gregory J. Hetzler, P.E., McKim & Creed Telephone Number: ( 910 ) 343-1048
11. 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 NIA and its issue date (if known)
Form: SWU-101 April 1998 Page I of

3. Speclfy.the type of project - !ck one):
Low Density High Density Redevelop General Permit % X Otiier
4. Additional Project Requirements (check appropriate blanks):
CAMA Major X Sedimentation/Erosion Control 404 Permit
111. PROJECT INFORMATION WQC 401 Project #980672
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.
Runoff from the reconstructed road, and new sidewalks and bike path will flow to grassed lined swales.
The flow length along grassed lined swales is maximized prior to entrance to collection system.
4 Sm 211 b,o refe-, 4 2re,2 s zre o) v+d g4 g ',c.e.,4 -Ae
2. Stormwater runoff from this project drains to the Cape Fear River basin.
3. Total Project Area: 6.46 acres 4. Project Built upon Area: 31.9 %
5. How many drainage basins does the project have? 1
6. Complete the following information for each drainage basin. If there are more titan -two drainage basins in
the project, attach an additional sheet with the information for each basin provided in the same format as
below. ! f
7-14
Iriformatton; A
;,
Draiiage Basin 2
Receiving Stream Name
Hewletts Creek
Receiving Stream Class
SA
Drainage Basin Area
6.46 acres
Existing Impervious* Area
1.23 acres
Proposed Impervious* Area
2.0rD�>}t 2creS
% Impervious* Area (total)
31.9%
Im"envious*Suirface<Area.;
P
rainage'Basin:I.'
Drautage Basin 2'
On -site Buildings
0
On -site Streets
56,145 sf (1'.29 acres)
On -site Parking
0
On -site Sidewalks
10,575 sf (0.24 acres)
Other on -site
22,900 sf (0.53 acres)
Off site
o
Total:
I E= 89,620 sf (2,06 acres)
* Impervious area is defined as the built upon area including, but not limited to, buildings, roads,
parking areas, sidewalks, gravel areas, etc.
7. How was the off -site impervious area listed above derived?
IV. DEED RESTRICTIONS AND PROTECTIVE COVENANTS
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.
Form: SWU-101 April 1998 Page 2 of 4

Z. 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) T
3. Specify the type of project (check one):
Low Density High Density Redevelop Ceneral Permit 1/-' Other
4. Additional Project Requirements (check applicable blanks):
CAMA Major ✓Sedimentation/Erosion Control �404/401 Permit ^ NPDES Stormwa[er
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.
2. Stormwater runoff from this project drains to the 02r �e _ River basin.
3.' Total Project Area'. w , 4 C� acres 4. Project Built Upon Area: -3/, f g_ %
5. How many drainage areas does the project have? `T
6. Complete the following information for each drainage area. If there are more than two drainage areas in the
project, attach an additional sheet with the information for each area provided in the same format as below"
Basin Information ;,;;=: ': : r;;t
..:":':s' i" .:�rainae Area
Drainage Area 2 •.... •.. -:-
Receiving Stream Name
rZe L
Receiving Stream Class
Drainage Area .
/'ZQ
9 6 4 `76D
Existing Impervious' Area
Proposed Impervious 'Area
/9 -7 -Z
1 �( 2D&
%Impervious' Area (total)
22,
lmpervious*Surface Area -'';'` a'?
c: ::Drainage. Area I'
On -site Buildings
On -site StreetsC,
On -site Parking
On -site Sidewalks
Otheron-si[e;��SZ%p
Off -site ('/4c YC�n12i1i
7 �U r
`779q
10—m
Total: 17 r72Z
Total:
Impervious area is defined as the built upon area including, but not limited to. buildings, roads, parking areas.
sideivalks, gravel areas, etc.
Form SWU-101 Version 3.99 Page 2 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 _ and its issue date (if known)
3. Specify the type of project (check one):
Low Density _High Density Redevelop General Permit Other
4, Additional Project Requirements (check applicable blanks):
CAMA Major 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.
2. Stormwater runoff from this project drains to the l.. g ?ii- River basing
3. Toni Project Area: 6.4(a acres 4. Project Built Upon Area: 31. I %
5. How many drainage areas does the project have? 4-
6. Complete the following information for each drainage area. If there are more than two drainage areas'in the
project, attach an additional sheet with the information for each area provided in the same format as below.
..Basin.]nformation;
Drainage Areal
., Drainage Area .
Receiving Stream Name
��p�� �� �5 ����
e�,L'S Geel<
Receiving Stream Class
SA
S�
Drainage Area
f 2Q 37
(Q 2
Existing Impervious' Area
Proposed Impervious *Area
27 245
% Impervious* Area (total)
yo
Z ' a
Impervious" Surface'Area •'-.
:Drainage Area 1
Drainage Area 2
On -site Buildings
On -site Streets
r 2
2 760
On -site Parking
z
On -she Sidewalks
Other on -site Bike C,�4� DriV
4 & Q 5
a62
OFF site t%4- of I' maim- BUA
'7, 10 Cl
Total:
Total: Z_7
Impervious area is defined as the Guilt upon area lncludin;. bur not limited to, buildings. roads, parking areas,
sidewalks, gravel areas, etc.
Form SWU-101 Version 3.99 Paee'_' of 4

by ),our signature below, you cent;' that the recorded deed restrictions and pro«ctive covenants for this
project shall include all the items t—.,oired by the permit, that the covenants wi. 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.
VL 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). Gregory J. Hetzler, P.E., McKim & Creed Engineers, P.A.
Mailing Address: 243 North Front Street
City: Wilmington
Phone: ( 910 ) 343-1048
VII. SUBMITTAL RE, QUMEiVIENTS
State: NC Zip: 28401
Fax: ( 910 ) 251-8282
This application package will not be accepted by the Division of Water Quality unless all of the applicable
items are included with the submittal.
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)
• 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)
VIII. APPLICANT'S CERTIFICATION
I, (print or type name ofperson 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 1 SA NCAC 2H.1000.
Signature: ,& -- Date: f �"' q 9 m
Title: _ �� ylf w&dp 'b' _
Form: SWU-101 April 1998 Pace of

ATTACHMENT A
1. Deed Restriction Requirements
The following statements must be recorded for all low density projects and for all projects that involve the
subdivision and selling of lots or outparcels:
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 storrnwater
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
forehay such that short -circulating of the system does not occur.
4. All built -upon area from the outparcel or future development must be directed into the permitted
storrnwater 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 statement in addition to items I and 2 above must be recorded:
6. No one may pipe, fill on 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
Wet Detention Basin Supplement
Form SWU-103
Infiltration Basin Supplement
Form SWU-104
Low Density Supplement
Form SWU-105
Curb Outlet System Supplement
Force 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
Form: SWU-101 April 1998
New, Modification, or
Late Renewal
$225
$385
$225
$350
$50
Page 4 of 4
Timely Renewal Without
Modification
n/a
$225
n/a
n/a
n/a

OPERATIONS AND MAINTENANCE PLAN
BIORETENTION AREA
Name: PARK AVENUE R.O.W. IMPROVEMENTS
WALLACE AVENUE TO 52ND STREET
Responsible Party: CITY OF WILMINGTON
Address: P.O. BOX 1810, WILMINGTON, NC 28402
Project No.: SW8 990421
Phone No: 341-5880
1. Maintenance Requirements: Maintenance of the system components is necessary to the
continued operability of the stormwater management facilities. The following are minimum
requirements which the maintenance staff of the owner's group will be required to follow to
maintain the detention area management system.
1. Immediately after project is finished and planting has occurred:
a. Mulch bioretention areas; any ground cover designated as plugs may be
put in place once the areas have been mulched. (Ground cover via
seeding and/or comprised of grass should not be overlaid with mulch).
b. Water plant material at each day's end for 14 successive da s.
ST
ORMWATER
�
2. Whenever needed: E
a. Remulch devoid areas by hand.
JUL 2 21999
b. Replace any inadequate stakes or wires. Fna,; n
C. Treat all diseased trees and shrubs by mechanical means or by hand.
3. Monthly or after every runoff producing rainfall event, whichever comes first:
a. Visually examine and repair erosion.
4. Semi-Annualiy:
a. Remove and replace dead and diseased vegetation determined to be
past treatment during the following periods: 3/15 to 4/30 and 10/1 to
11130.
b. Test pH of the organic layer and soil, and use results to establish
amount of any required alkaline substance (e.g. limestone) to be applied
and follow by such an application.
SA002410055 PARK AVF, DESIG O&M PIAN - $IORETENTION AREADOC

Or ,_RATIONS AND MAINTENANCE PLAN
BIORETENTION AREA
5. Annually:
a. Provide any additional necessary mulch by hand in the spring.
b. Replace support stakes in the spring.
C. Soil testing should be performed in order to determine the accumulation of
toxins and heavy metals. Pending testing results, removal of the
contaminated soil, and in worst case scenarios, removal and disposal
of the complete soil base and the plant material may be needed.
5. Every two to three years:
a. Optional: Remove past mulch layer followed by application of new layer
by hand in spring.
7. General:
a. All components of the bioretention system will be kept in good working
order. Repair or replacement components will meet the original design
specifications as per the approved stormwater plan.
b. Deficiencies or inoperable conditions must be reported to the Project
Engineer. If resolution to the deficiency can not be implemented within 15
days, notification shall be given to the Division of Environmental
Management, Wilmington Regional Office, phone [phone].
I acknowledge and agree by my signature below that l am responsible for the performance of
the above operation and maintenance procedures.
Signature: Date:
Mary Gornto, City Manager
&%0B2410D55 PARK AVE DESIGN%O&M PLAN - BIORETENTION AREADOc

NCDENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue Coleen H, Sullins
Governor Director
January 15, 2010 w
Mr. Sterling Cheatham, City Manager
City of Wilmington
P.O. Box 1810
Wilmington, NC 28402-1810
Subject: Session Law 2009-406 -- Permit Extension — Corrected Letter
Stormwater Permit #ESW8 990421
High Density — Park Avenue Right -of -Way
New Hanover County
Dear Mr. Cheatham:
Thank you for submitting the Designer Certification on October 28, 2009 as requested.
Dee Freeman
Secretary
On August 5, 2009, the Governor signed Session Law 2009-406. This law impacts any development
approval issued by the Division of Water Quality under Article 21 of Chapter 143 of the General Statutes,
which is current and valid at any point between January 1, 2008, and December 31, 2010. The law
extends the effective period of any stormwater permit that is set to expire during this time frame to 3
years from its current expiration date.
Accordingly, Stormwater Permit # SW8 990421, which expired on January 11, 2010, is now in effect until
January 11, 2013. Please submit the renewal application and fee at least 180 days prior to January 11,
2013, which would be June 11, 2012. A copy of the Renewal Application can be obtained from the
following website: http:/lh2o.enr.state.nc,us/su/bmp_forms.htm.
If you have any questions, please contact the Division of Water Quality in the Wilmington Regional Office
at 910-796-7215.
Sincerely,
�� Dz' ct
Georgette Scott
Stormwater Supervisor
Division of Water Quality
S:1WQSlSTORMWATERIRENEWALISL2009-4061990421.ian 10corrected
cc: . Wilmington Regional Office
Central Files
Angela Hammers - WIRO
Wilmington Regional Office
127 Cardinal Drive Extension, Wilmington, North Carolina 284C5
Phone: [phone] FAX: [phone] Customer Service: 1-877-623-6748
Internet: www.ncwaterquai4.org
An Equal Opportunity 1 Affirmative Action Employer
onNalm-ally
thCarolina

State " rmwater Management Systems
Permit No. S W8 9 0421
Park Avenue Right -of -Way Improvements
Stormwater Permit No. SW8 990421
New Hanover County
Designer's Certification
as a duly r re in
the State of North Carolina, having been authorized to observe eriodicall w�Fulllimr,- the construction of
the project,
far . crY `7 _ (Project Owner) hereby state that, to the best of my abilities, due care
and diligence was used in the bbservation of the project construction such that the construction was observed to be
built within substantial compliance and intent of the approved plans and specifications.
The checklist of items on page 2 of this form is included in the Certification.
Noted deviations from approved plans and specification:
Signature/
Registration Number _ 4
Date
Ski';%
022837 � M
6
F N Gl
pRY
SEAL

Stonnwater Management Systems
Hermit No. SW8 990421
Certification Requirements:
1. The drainage area to the system contains approximately the permitted acreage.
2. The drainage area to the system contains no more than the permitted amount of built upon area.
�3. All the built -upon area associated with the project is graded such that the runoff drains to the system.
`f 4. The outlet/bypass structure elevations are per the approved plan.
—Y-5. The outlet structure is located per the approved plans.
7 b. Trash rack is provided on the outlet/bypass structure.
7. All slopes are grassed with permanent vegetation. VN-,
v6J�- AREA c� A, R. A a ,4- s i�►� r7 T�,�s�
8. Vegetated slopes are no steeper than 3:1. 1�'^�33�* Uf` r''`
J I ` G• 5 N• S'l oPt} CI]Gi 4L� Tz'i L4 T] ,,,?N
--J--9. The inlets are located per the approved plans an do no cause`s oA-circuiting oYthe system
10. The permitted amounts of surface area and/or volume have been provided.
11. Required drawdown devices are correctly sized per the approved plans.
1-12, All required design depths are provided.
_Y 13. All required parts of the system are provided, such as a vegetated shelf, and a
forebay.
14. The overall dimensions of the system, as shown on the approved plans, are provided.
cc: NCDENR-DWQ Regional Office
Tony Roberts, New Hanover County Building Inspector.'.`''','"
✓,. , T apart ��

State F -rmwater Management Systems
Permit No. SW8 990421
Park Avenue Right -of -Way Improvements
Stormwater Permit No. SW8 990421
New Hanover County
Designer's Certification
I, AZAW y ajF79-1,c;-A as a duly register N J n0 r lU LF !L- in
the State of North Carolina, having been authorized to'observe eriodical eeklY44141imc}-the construction of
the project,
(Project)
for an D TC r r"N iJ (Project Owner) hereby state that, to the best of my abilities, due care
and diligence was used in the 6bservation of the project construction such that the construction was observed to be
built within substantial compliance and intent of the approved plans and specifications.
The checklist of items on page 2 of this form is included in the Certification.
Noted deviations from approved plans and specification:
SEAL
tt Itt11111"*.
Signature {!//. CA
goo., 51p�
Registration NumberSEAL' C
Date 022887 e
•'����0RY,,.
,'triple 00
ir V .'. .r
OCT 2 8 2009
7

Stormwater Management Systems
Permit No. SW8 99042I
Certification Requirements:
I . The drainage area to the system contains approximately the permitted acreage.
_2. The drainage area to the system contains no more than the permitted amount of built -upon area.
—Y--3. All the built -upon area associated with the project is graded such that the runoff drains to the system.
Y4. The outlet/bypass structure elevations are per the approved plan.
—Y-5. The outlet structure is located per the approved plans.
Y6. Trash rack is provided on the outlet/bypass structure.
7. All slopes are grassed with permanent vegetation. ,
V_V y- Qa, st A A.
j 0, Sv u 1�I �►c�c P p�u ,¢
— 8. Vegetated slopes are no steeper than 3:1, �e V/4 v� �� 1
�9. The inlets are located per the approved plans andsdo no cause stiort-c cuiting Ythe system
_�_10. The permitted amounts of surface area and/or volume have been provided.
11. Required drawdown devices are correctly sized per the approved plans.
A-12. All required design depths are provided.
cc:
11 All required parts of the system are provided, such as a vegetated shelf, and a
forebay.
14. The overall dimensions of the system, as shown on the approved plans, are provided.
NCDENR-DWQ Regional Office
Tony Roberts, New Hanover County Buildinj
` OCT 2 8 2009

Naugle, Mary
From: Richard Collier [[e-mail]]
Sent: Tuesday, October 27, 2009 4:27 PM
To: Naugle, Mary
Cc: Dave. [e-mail]; Carl. [e-mail]
Subject: Designer Certification for Permit SW8 990421
Attachments: Park Ave Improvements SW8 990421.PDF
Importance: High
Mary Jean:
Recently Rob Gordon received the attached letter from your office related to the designer's
certification for the Park Avenue Stormwater Improvements (SW8 990421) designed by McKim &
Creed, PA, Greg Hetzler, PE, on behalf of The City of Wilmington. We had the files pulled from our
archives dug though them for the final design and construction plans, original permit, and any
indication of a designer's certification. Low and Behold, thanks to Greg Hetzler being very
meticulous, I discovered his signed and sealed designer's certification along with the completed
certification requirements checklist.
It appears that Greg made an original for NCDENR and and original for his files. So either it was lost
in the mail, never went out, or who knows what happened in late 2000. Regardless, attached I have
included the signed and sealed Designer's Certification and Checklist for your approval related to
Permit SW8 990421.
Please let me know if you require additional information. If you need the "original" I can have it
delivered to you tomorrow.
Richard Collier, PE
Director of Planning and Land Development
McKIM&CREED
ENGINEERS SURVEYORS PLANNERS
243 North Front Street
Wilmington, NC 28401
. r
910.251.6665 x236 8 �Q�g
910.251.8282 fax 0 C T 2
910.520.7754 mobile
hfp://www.mckimcreed.com
APlease consider the environment before printing this e-mail.
This e-mail and any files transmitted with it are confidential
and intended solely for the use of the individual or entity to
whom they are addressed. If you have received this e-mail in
error please notify the system manager. Please note that any
�oi

views or opinions presented in this e-mail are solely those of
the author and do not necessarily represent those of the
company. Finally, the recipient should check this e-mail and
any attachments for the presence of viruses. The company
accepts no liability for any damage caused by any virus
transmitted by this e-mail.
2

NC®ENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue Coleen H. Sullins
Governor Director
October 8, 2009
Mr. Sterling Cheatham, City Manager
City of Wilmington
PO Box 1810
Wilmington, NC 28402-1810
Subject: REQUEST FOR DESIGNERS CERTIFICATION
Stormwater Project No. SW8 990421
Park Avenue Right -of -Way Improvements
New Hanover County
Dear Mr. Cheatham:
Dee Freeman
Secretary
On January 4, 2000, the Division of Water Quality issued a Stormwater Management Permit to you
for the subject project. Per the terms and conditions of the permit, and Stormwater Regulation 15A NCAC
2H.10080), which stipulates the following:
"Upon completion of construction, the designer for the type of Stormwater system installed
must certify that the system was inspected during construction, was constructed in
substantial conformity with plans and specifications approved by the Division and complies
with the requirements of this Section prior to issuance of the certificate of occupancy."
As of this date, our records indicate the required designer's certification has not been received.
Operation of the stormwater system prior to submission of the required certification is a violation of NCAC
2H.10080) in accordance with NCGS 143-215.6. Construction is considered complete at the time the
project is occupied by an owner or tenant for its intended use. Please submit the required certification by
October 30, 2009. Failure to submit the certification is considered a violation of the permit, and is subject to
enforcement action, per NCGS 143-215.6A.
This permit expires on January 4, 2010. Section .1003(h) of 15 A NCAC 2H .1000 (the stormwater
rules) requires that 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 before the expiration date. 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, or are no longer the permittee, please provide the name,
mailing address and phone number of the person or entity that is now responsible for this permit. A
request for renewal application was sent to your office on July 24, 2009. As of this date no response has
been received by the Division.
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 6A.
If you have any questions please call David Cox or me at [phone] or e-mail at
mary.Nau,[e-mail].
Sincerely,
0710,
Mary Jlaugle
Wilmington Regional Office
127 Cardinal Drive Exlension, Wilmington, North Caroifna 28405 �rOne
Phone: M-796.72151 FAX: [phone] Customer Service: 1.877.623.6748 Nb Carolina
Internee•.w w.ncwaterqualily.org Pxwur .l
An Equal Cpporlunilr 1 Affirmative Action Employer Ld `�

A.
-
WC-
6-ERR-North Carolina Department of Environment and Natura
Division of Water Quality
Beverly Eaves Perdue Coleen I-l. Sullins
Governor Director
July 24, 2009
Ms. Mary Gomto, City Manager
City of Wilmington
P. 0. Box 1810
Wilmington, NC 28402
Subject: Stormwater Permit No, SVV8990421
Park Avenue Right -of -Way Improvements
New Hanover County
Dear Ms. Gornto:
Resources
Dee Freeman
Secretary
The Division of Water (Duality issued a Coastal Stormwater Management Permit, Nurnber SW8990421 to
Park Avenue flight -of -Way Improvements for a High Density Project on January a, 2000. This permit
expires on January 4, 2010. Section .1003(h) of 15 A NGAC 2H .1000 (the stonnwaterrules) requires that
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 before the expiration date. 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, or are no longer the permittee, 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
treatment units a certification of completion be submitted to the Division from an appropriate designer for
the 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. Please include a copy of the
certification with your permit renewal request and processing fee. Enclosed is a copy of a sample
certification. Also enclosed is a new Operation and Maintenance agreement that should be completed
and submitted along with your renewal application.
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'aciion including the assessment of civil penalties of up to $10,000 per day.
If you have any questions, plaage foal free fo ronlact David. Cox at 910-795-73,18.
Sincerely,
r
J�:.ii LJ�aE�,•'' �.11�Ciie, e.3Etir Pi'i.�n�f�Ll;f iail�liF�U{sit
Surface Water Protection Section
Wilmington Regional Office
Enclosures
GDS/dwc S:lVVQS1StormvraterlRL-'K( fVALS1Requests120001990421.jt1109
cc. Wilmington Regional Office
Nliiminglon Regional Office
127 Cardinal Drive Exlension, Wilmington, North Carolina 26405 1�,1� One
Phone: [phone] FAX: [phone] Cusionw Service: 1-877-623.6748 1 o hCarolina
Internet: wvuvr.ncrvalerqualityorg
An Equal Oppa lonily I Attirmativa Aclion Cmpbyat (j 8