SW8000219_CURRENT PERMIT_20000317

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SW
DOC TYPECURRENT
PERMIT
❑ APPROVED PLANS
❑ HISTORICAL FILE
❑ COMPLIANCE EVALUATION INSPECTION
DOC DATE
`�/IJ,t7D"V7
YYYYMMUD

State of North Carolina
Department of Environment
and Natural Resources
Wilmington Regional Office
James B. Hunt, Jr., Governor
Bill Holman, Secretary
Division of Water Quality
March 17, 2000
Mr Tony Caporaletti, Manager
Parkway Business Park, LLC
1727 Verazzano Place
Wilmington, NC 28405-4227
1 • •
FqCDENR
NORTH CAROLINA DEPARTMENT OF
ENVIRONMENT AND NATURAL RESOURCES
Subject Permit No SW8 000219
Lot 2 Parkway Business Park
High Density Stormwater Project
New Hanover County
Dear Mr Caporaletti
The Wilmington Regional Office received a complete Stormwater Management Permit Application for Lot 2
Parkway Business Park on March 17, 2000 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 S W 8 000219 dated March 17, 2000, for the construction of Lot 2 Parkway Business Park
This permit shall be effective from the date of issuance until March 17, 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
adj udicatory hearing upon written request within thirty (30) days following receipt of this permit This request must
be in the form of a written petition, conforming to Chapter 150B of the North Carolina General Statutes, and filed
with the Office of Administrative Hearings, P O Drawer 27447, Raleigh, NC 27611-7447 Unless such demands
are made this permit shall be final and binding
If you have any questions, or need additional information concerning this matter, please contact Linda Lewis, or
me at [phone]
Sincerely,
Rick Shiver
Water Quality Regional Supervisor
RSS/arl S 1WQSISTORMWATIPERMIT1000219 MAR
cc Ward Andrews, P E
Tony Roberts, New Hanover County Inspections
Beth Easley, New Hanover County Engineering
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% post -consumer paper

State Stormwater Management Systems
Permit No SW8 000219
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
STATE STORMWATER MANAGEMENT PERMIT
HIGH DENSITY DEVELOPMENT
In accordance with the provisions of Article 21 of Chapter 143, General Statutes of North Carolina as amended, and
other applicable Laws, Rules, and Regulations
PERMISSION IS HEREBY GRANTED TO
Parkway Business Park, LLC
Lot 2 Parkway Business Park
New Hanover County
FOR THE
construction, operation and maintenance of a wet detention pond in compliance with the provisions of 15A NCAC
2H 1000 (hereafter referred to as the "stormwater rules') and the approved stormwater management plans and
specifications and other supporting data as attached and on file with and approved by the Division of Water Quality
and considered a part of this permit
This permit shall be effective from the date of issuance until March 17, 2010 and shall be subject to the following
specified conditions and limitations
I. DESIGN STANDARDS
This permit is effective only with respect to the nature and volume of stormwater described in the
application and other supporting data
2 This stormwater system has been approved for the management of stormwater runoff as described on page
3 of this permit, the Project Data Sheet The stormwater control has been designed to handle the runoff from
34,291 square feet of impervious area
3 Approved plans and specifications for this project are incorporated by reference and are enforceable parts
of the permit
4 The tract will be limited to the amount of built -upon area indicated on page 3 of this permit, and per
approved plans
2

State Stormwater Management Systems
Permit No SW8 000219
DIVISION OF WATER QUALITY
PROJECT DESIGN DATA SHEET
Project Name
Lot 2 Parkway Business Park
Permit Number
SW8 000219
Location
New Hanover County
Applicant
Mr Tony Caporaletti, Manager
Mailing Address
Parkway Business Park, LLC
1727 Verazzano Place
Wilmington, NC 28405-4227
Application Date
March 17, 2000
Name of Receiving Stream/Index #
Prince George Creek / (CFR 18-74-53)
Classification of Water Body
"C Sw"
If Class SA, chloride sampling results
n/a
Pond Depth, feet
5
Permanent Pool Elevation, FMSL
342
Drainage Area, acres
128
Total Impervious Surfaces, ft2
34,291
Offsite Area entering Pond, ft2
None, per Engineer
Required Surface Area, ft2
2,456
Provided Surface Area, ft2
2,552
Required Storage Volume, ft3
3,069
Provided Storage Volume, W
3,739
Temporary Storage Elevation, FMSL
3544
Controlling Orifice
0 75"(� pipe
3

State Stormwater Management Systems
Permit No SW8 000219
II SCHEDULE OF COMPLIANCE
The stormwater management system shall be constructed in it's entirety, vegetated and operational for its
intended use prior to the construction of any built -upon surface
2 During construction, erosion shall be kept to a minimum and any eroded areas of the system will be repaired
immediately
3 The permittee shall at all times provide the operation and maintenance necessary to assure the permitted
stormwater system functions at optimum efficiency The approved Operation and Maintenance Plan must
be followed in its entirety and maintenance must occur at the scheduled intervals including, but not limited
to
a Semiannual scheduled inspections (every 6 months)
b Sediment removal
c Mowing and revegetation of side slopes
d Immediate repair of eroded areas
e Maintenance of side slopes in accordance with approved plans and specifications
f Debris removal and unclogging of outlet structure, onfice device and catch basins and piping
g Access to the outlet structure must be available at all times
4 Records of maintenance activities must be kept and made available upon request to authorized personnel
of DWQ The records will indicate the date, activity, name of person performing the work and what actions
were taken
Decorative spray fountains will not be allowed in the stormwater treatment system
6 The facilities shall be constructed as shown on the approved plans Tins 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
7 Upon completion of construction, prior to issuance of a Certificate of Occupancy, and prior to operation of
this permitted facility, a certification must be received from an appropriate designer for the system installed
certifying that the permitted facility has been installed in accordance with this permit, the approved plans
and specifications, and other supporting documentation Any deviations from the approved plans and
specifications must be noted on the Certification
8 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
9 The following items will require a modification to the permit
a Any revision to the approved plans, regardless of size
b Project name change
c Transfer of ownership
d Redesign or addition to the approved amount of built -upon area
e Further subdivision, acquisition, or sale 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
10 The Director may determine that other revisions to the project should require a modification to the permit
4

State Stormwater Management Systems
Permit No SW8 000219
11 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
12 Prior to the sale of any portion of the property, an access/maintenance easement 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
13 The permittee is responsible for verifying that the proposed built -upon area does not exceed the allowable
built -upon area
14 The runoff from all built -upon area on the project must be directed into the permitted stormwater control
system
15 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
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
2 Failure to abide by the conditions and limitations contained in this permit may subject the Permittee to
enforcement action by the Division of Water Quality, in accordance with North Carolina General Statute
143-215 6A to 143-215 6C
3 The issuance of this permit does not preclude the Permittee from complying with any and all statutes, rules,
regulations, or ordinances which may be imposed by other government agencies (local, state, and federal)
which have jurisdiction
4 In the event that the facilities fail to perform satisfactorily, including the creation of nuisance conditions,
the Permittee shall take immediate corrective action, including those as may be required by this Division,
such as the construction of additional or replacement stormwater management systems
The permittee grants DENR Staff permission to enter the property for the purpose of inspecting all
components of the permitted stormwater management facility
6 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
Permit issued this the 17th day of March, 2000
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
Kerr T Stevens, Director
Division of Water Quality
By Authority of the Environmental Management Commission
Permit Number SW8 000219
5

State Stormwater Management Systems
Permit No SW8 000219
Lot 2 Parkway Business Park
Stormwater Permit No SW8 000219
New Hanover County
Designer's Certification
I, , as a duly registered in
the State of North Carolina, having been authorized to observe (pen odically/weekly/fuI1 time) the construction of
the project,
(Project)
for _(Project Owner) hereby state that, to the best of my abilities, due care
and diligence was used in the observation of the project construction such that the construction was observed to be
built within substantial compliance and intent of the approved plans and specifications
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
Date
SEAL
C.

State Stormwater Management Systems
Permit No SW8 0002I9
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
4 The outlet/bypass structure elevations are per the approved plan
S The outlet structure is located per the approved plans
6 Trash rack is provided on the outlet/bypass structure
7 All slopes are grassed with permanent vegetation
8 Vegetated slopes are no steeper than 3 1
9 The inlets are located per the approved plans and do not cause short-circuiting of the 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
12 AlI required design depths are provided
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
7

r' I
OFFICE USE ONLY a `
Date Received
Fee Paid
Permit Number
2- l - 2 000
-Roll.
State of North Carolina RECi ;IVED
Department of Environment and Natural Resources
Division of Water Quality F F S 14 2000
STORMWATER MANAGEMENT PERMIT APPLICATION FOG-
4--Thu form may be photocopied for use as an original
I GENERAL INFORMATION
1 Applicants name (specify the name of the corporation, inchvidual, etc who owns the project)
Parkway Business Park LLC
2 Print Owner/Signing Official's name and title (person legally responsible for facility and compliance)
Tony Canoraletti Vanarer
3 Mailing Address for person listed in item 2 above
1722 Ver zzano Place
City wilminzrton State N. C. Zip 28405-4227
Telephone Number ( 9VI Z, 256-5013_-- -_-
4 Project Name (subdivision, facility, or establishment name -should be consistent with project name on
plans, specifications, letters, operation and maintenance agreements, etc)
Lot 2 - Parkway Business Park, LLC
5 Location of Project (street address)
Northchass Parkway N. S.
City _- Wil.minrton . _ County Nair Hanover
6 Directton�, to project (from nearest major intersection)
On north side of Northchase Parkway, N. S. at intersection with
liarchant Court.
7 Lautude ... 14- JR N
Longitude 77- 52 W , of project
8 Contact person who can answer questions about the project
Name Tony-Caporalatti Telephone Number ( 91n l 256-5013
II PERMIT INFORMATION:
1 Specify whether project is (check one) x New Renewal Modification
Form SWU-101 Version 3 99 page I of 4

2 if this application is being submitted as the result of a renewal or modification to an existing permit, list ifle
existing peniut number and its issue date (tf known)
3 Specify the type of project (check one)
Low Density x High Density Redevelop General Pertrut Other
+ 4 Additional Project Requirements (check applicable blanks)
=CAMA Major x Sedinentation/Erosion Control _,Y 404/401 Permit _NPDES Stormwater
Information on required state permits can be obtained by contacting the Customer Service Center at
1-877-623-6748
111 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 y r
Stormwater from lot 2 is collected in drop inlets and paved to a pond.
Discharme from the vond is pined to a ditch at _ the rear of the lot.
2 Stormwater runoff from this project drains to the Prince. George Creek River basm
3 Total Project Area 1.28 acres 4 Project Suitt Upon,Area r 62 %
5 How many drainage areas does the project have? one"
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
I - i rrr I r 'r1r, rw rr r. Lf,
�r
Basin Information , > ,
aJ
;e °Drainage Area 1 : a�i+
>e4Ri`�i �1W
d < rt �Y , Drainage Area 2 � M , "'k
+Yi�1�rP p*Y'Y^r w K' 4 r+aM i ii wIhN
Receiving Stream Name
Prince Georg2 Creek
Receiving Stream Class
C SW
,
Drainage Area
0 on. ft.
Existing lrn ervious` Area
0 s . ft.
Pro osed Im ervious"Area
34,291
% Impervious*, Area (total) ti'•L�,
r i ,62, , r,[- , , r-, .,r 7 !
Kr. 13
Impervious' Surface Area
geAreadr';�;,
rainageAxeat;
On -site Buildings
14 10 ? d.' ft.
On -site Streets
On -site Parking 1
20,182 s . ft,
On -site Sidewalks
,
Other on -site
Off -site
Total 34, 291 s . ft.
Total
impervious area is defined as the built upon area including, but not !united to, buildings, roads, lurking areas,
sideu viks, gravel areas, etc
Form SW U-101 Version 3 99 Page 2 of 4 11 1

OFFICE USE ONLY %,,- � •- ", d) -:1
Date Received Fee Paid Perrrut Number -7
-Z-14-22U2ow
State of North Carolina RECEIVED
Department of Environment and Natural Resources
Division of Water Quahty - E E B 14 2000
STORMWATER MANAGEMENT PERMIT APPLICATION F
Then form ►nay be photocopied for use as an original
1 GENERAL INFORMATION
l Applicants name (specify the name of the corporation, individual, etc who owns the project)
Parkway Business Park._LLC_
2 Print Owner/Signing Official's name and title (person legally responsible,for facility and compliance)
Tony Caoorale tti. ManaEer _ -•_— - -
3 Mailing Address for person listed in item 2 above._,
1727 Verazzano _Place t _
City Wilmineton State 'N. C. Zip 28405-4227
Telephone Number 910 256-5013 �^
4 Project Name (subdevesion, facility, or establishment name -should be consistent with project name on
plans, specifications, letters, operation and maintenance agreements, etc)
Lot 2 - Parkway Business Park LLC
S Location of Project (street address)-
Northchase Parkway N. E.
z
City _ Wilminpton County New Hanover
6 Directions to project (from nearest major intersection)
On north side of Northehase Parkway. N. , E. `at intersection with
149rchant Court.
7 Latitude _ 34--1f; N _ Longitude . +'t 7.7�52 rW_ s of project
8 Contact person who can answer questions about the project r' r
Name Tonv Caporaletti Telephone Number ( 9Z0 ) 256-50:Li
11 PERMIT INFORMATION.
1 Specify whether project u (check one)
, tIt ,, ( 4
^ t^
x New Renewal
Form SWU-101 Verson 3 99 Page I of 4
Modification

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
subdivisions, outparcels and future development prior to the sale of any lot If lot sizes vary significantly, a
table lasting each lot number, size and the allowable built -upon area for each lot must be provided as an
attachment
Tile following covenants are intended to erasure ongoing complaZnce with state stormwater management permit
number as issued by the Division of Water Quality These covenants may
not be clanged or deleted without the consent of the State
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 materwl but do not include wood
decking or the water surface of swimming pools
3 Swales shall not be filled in, piped, or altered except as necessary to provide driveway crossings
Built -upon area in excess of the permitted amount requires a state stormwater management permit modification prior to
construction
5 All permitted runoff from outparcels or future development shall be directed into the permitted stormwater control
bystem 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 SUPPLEMENT 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 Raver Basin Supplement
Form SWU-109
Innovative Best Management Practice Supplement
Form SWU-101 Version 3 99 Page 3 of

VI SUBMITTAL 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
bubmitted to the appropriate DWQ Regional Office.
Please indicate that you have provided the following required information by uutialing in the space
provided next to each item
• Original and one copy of the Stormwater Management Peraut Application Form
• One copy of the applicable Supplement Form(s) for each BMP
• Permit application processing fee of $420 (payable to NCDENR)
• 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, 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)
VII AGENT AUTHORIZATION
If you wish to designate authority to another individual or firm so that they may provide mformation on your
behalf, please complete this section
Designated agent (individual or firm) J. wares Andreas, P. E.
Mailing Address P. C. Box 4423-
City Wilmington State N. C. Zap 2R4o6
Phone ( SO ) 762-2764
VIII. APPLICANTS CERTIFICATION
I, (print or type name of person fisted in General Information, item 2) Tony Caroraletti
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 I"
Signature
Form SWU-101 Version 3 99 Page 4 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
subdivisions, outparcels and future 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
I The following cotenants are intended to ensure ongoing compliance with state stormwater management permit
number as issued by the Division of Water Quality These covenants may
►rat be changed or deleted without the consent of the State
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 do not include wood
decking or the water surface of swimming pools
3 Swale!, shalt 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
con.5truction
5 All permitted runoff from outparcels or future development shall be directed into the permttted stormwater control
:,yste►n 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 ,terns 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. -SUPPLEMENT FORMS
The applicable state stormwater management permit supplement form(s) listed belowrmustbe submitted for
each BMP specified for du's7project 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_bensity 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
.Tl , r, I I I, "r Y0"- , ,'
Form SWU-101 Version 3 99 Page 3 of 4

. Perrut No Swg ccoZ( 9
(so be provided by DWQ)
State of North Carolina
Department of Environment and Natural Res( urces
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICA [ION FORM
WET DETENTION BASIN SUPPLEMiENT
This form may be photocopied for use as an original
DDT Stormwater Management Plan Review,
A complete stormwater management plan submittal includes an applicatu n form, a wet detention basin
supplement for each basin, design calculations, and plans and specificatio is showing all basin and outlet
structure details
I. PROJECT INFORMATION
Project Name Lot 2 - Parkway Business Park, LLC
Contact Person To!Z aporaletti Phone Number (910 ) 256-5013
For projects with multiple basins, specify which basin this worksheet applies to
elevations
Basin Bottom Elevation 29.2 ft
Permanent Pool Elevation 34.2 ft
Temporary Pool Elevation 35•44 ft
areas
Permanent Pool Surface Area 2,552 sq ft
Drainage Area 1.28 ac
Impervious Area
volumes
Permanent Pool Volume
Temporary Pool Volume
Forebay Volume
Other parameters
SA/DA I
Diameter of Orrice
Design Rainfall
Design TSS Removal 2
0.79 ac
6,505 cu ft
3,739 cu ft
1.350 cu ft
0,444
3/4 in
1 in
90 %
(floor of the basin)
(elevation of the onfice)
(elevation of the discharge structure overflow)
(water surface area at t/ e orifice elevation)
(on -site and off -site dra,nage to the basin)
(on -site and off -site drainage to the basin)
(combined volume of min basin and forebay)
(volume detained above the permanent pool)
(approximately 20% of , oral volume)
(surface area to draina, a area ratio from DWQ table)
(2 to 5 day temporary fool draw -down required)
(minimum 85% requirec )
Form SWU-102 Rev 3 99 Page 1 of 4

' When using the Division SAIDA tables, the correct SAIDA ratio for permanent pool sizing should be computed based upon the
auual impervious % and permanent pool depth Linear interpolation should be employed to deternune the correct value for non-
standard table entries
2 In the 20 coastal counties, the requirement for a vegetative filter may be waived if the wet detention basin is designed to provide
90% TSS removal The NCDENR BMP manual provides design tables for both 85% TSS removal and 90% TSS removal
II. REQUIRED ITEMS CHECKLIST
The following checklist outlines design requirements per the Stormwater Best Management Practices Manual
(N C Department of Environment, Health and Natural Resources, February 1999) and Administrative Code
Section 15 A NCAC 2H 1008
Initial in the space provided to indicate the following design requirements have been met and supporting
documentation is attached If the applicant has designated an agent in the Stormwater Management Permit
Application Form, the agent may initial below If a requirement has not been met, attach justification.
Applicants Initials
a- The permanent pool depth is between 3 and 6 feet (required minimum of 3 feet)
b The forebay volume is approximately equal to 20% of the basin volume
c The temporary pool controls runoff from the design stone event
n
The temporary pool draws down in 2 to 5 days
If required, a 30-foot vegetative filter is provided at the (atlet (include non -erosive flow
calculations) _ .
f The basin length to width ratio is greater than 3 1 '' t
g The basin side slopes above the permanent pool are no st -eper than 3 1
h A submerged and vegetated perimeter shelf with a slope A 6 1 or less (show detail)
i Vegetative cover above the permanent pool elevation is %pecified
j A trash rack or similar device is provided for both the ovr,rflow and onfmce
F -,/ 114 k A recorded drainage easement is provided for each basin"'including access to nearest nght-
of-way
1 If the basin is used for sediment and erosion control dunng construction, clean out of the
basin is specified prior to use as a wet detention basin ' , '
a M m A mechanism is specified which will drain the basin'Gr maintenance or an emergency
L
III. WET DETENTION BASIN OPERATION AND MAINTENANCE Ai ;REEMENT
The wet detention basin system is defined as the wet detention basin, pretreatment including forebays and the
vegetated filter if one is provided r
This system (check one) 0 does :Ioesnot
es not incorporate a vegetated filter at the outlet.
This system (check one) 0 does incorporate pretreatment other than a forebay.
Form S W U-102 Rev 3 99 Page 2 of 4

Permit No Sub wo-zl
(to be provided by DWQ)
State of North Carohna
Department of Environment and Natural Res(,urces
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICA LION FORM
WET DETENTION BASIN SUPPLEMENT
This form may be photocopied for use as an original
D! QStormwater ManaeemcnI Plan Review,
A complete stormwater management plan submittal includes an applicati(m form, a wet detention basin
supplement for each basin, design calculations, and plans and spectficatio� is showing all basin and outlet
stricture details
I. PROJECT INFORMATION
Project Name Lot 2 - Parkway Business Park, LLC
Contact Person Tony Caporaletti Phone Number (9910 ) 256-5013_
For projects with multiple basins, specify which basin this worksheet applies i o
elevations
Basin Bottom Elevation
Permanent Pool Elevation
Temporary Pool Elevation
areas
29.2 ft
34.2 ft
.ti4 ft
Permanent Pool Surface Area 2,552 sq ft
Drainage Area 1•28 ac
Impervious Area
volumes
Permanent Pool Volume
Temporary Pool Volume
Forebay Volume
Other parameters
SA/DAt
Diameter of Onfice
Design Rainfall
Design TSS Removal z
Form SWU-102 Rev 3 99
0.79 ac
(floor of the basin)
(elevation of the orifice)
(elevation of the discharge structure overflow)
(water surface area at 0 e orifice elevation)
(on -site and off -site drainage to the basin)
(on -sue and off -site drainage to the basin)
b, 50S cu ft (combined volume of mG in basin and forebay)
3.739 cu ft (volume detained above the permanent pool)
1,350 cu ft (approximately 20% of, otal volume)
0.444 (surface area to dratnal a area ratio from DWQ table)
3/4 to (2 to 5 day temporary pool draw -down required)
1 in
90 % (minimum 85% requiret j
Page 1 of 4

Maintenance activities shall be performed as follows
After every significant runoff producing rainfall event and at least monthly
a Inspect the wet detention basin system for sediment accumulation, erosion, trash accumulation,
vegetated cover, and general condition
b Check and clear the onfice of any obstructions such that drawdown,of the temporary pool occurs
within 2 to 5 days as designed
2 Repair eroded areas immediately, re -seed as necessary to maintain good vegetative cover, snow vegetative
cover to maintain a maximum height of six inches, and remove trash as needed
3 Inspect and repair the collection system (i a catch basins, piping, swales, nprap, etc ) quarterly to
maintain proper functioning
4 Remove accumulated sediment from the wet detention basin system semi-annually or when depth is
reduced to 75`70 of the original design depth (see diagram below) Removed sediment shall be disposed
of in an appropriate manner and shall be handled in a manner that will not adversely impact water quality
(i a stockpiling near a wet detention basin or stream, etc )
The measuring device used to determine the sediment elevation shall be such that it will give an accurate
depth reading and not readily penetrate into accumulated sediments
When the permanent pool depth reads 3.75 feet in the main pond, the sediment shall be removed
When the permanent pool depth reads 2.25 feet in the forebay, the sediment shall be removed
Sediment ReAoval El 11 e 95 175
Bottom Eleatton ___-2(1 3 5b
FOREBAY
BASIN DIAGRAM
(fill in the blanks)
Permanent Pool Elevation 34920
Sediment Removal Elevation 3Oo45
------------------
Bottom Elevation
MAIN POND
75 %
25 %
Remove cattails and other indigenous wetland plants when they cover 50% of the basin surface These
plants shall be encouraged to grow along the vegetated shelf and forebay berm
6 If the basin must be drained for an emergency or to perform maintenance, the flushing of sediment
through the emergency drain shall be irunimized to the maximum extent practical
Form SWU-102 Rev 3 99 Page 3 of 4

7 All components of the wet detention basin system shall tie maintained in good worlung order '� 5
I acknowledge and agree by my signature below that I am responsible for the performance of the seven
maintenance procedures listed above I agree to notify DWQ of any problems with the system or pnor to any
changes to the system or responsible party
Print mine Tbriv CapQraletti
Title _ _ _ Mariaaer. LLC '
_ .. •
Address 1'727 �/araiGzano Place , WW�.lminaton, N. C. 2fi4f15-�tt22 7
Phorn
Sign& -
Date
Note The legally responsible party should not be d homeowners association unless more than 50% of the lots have been sold and
a resident of the subdivision has been named the president
I, , a Notary Public for the State of _%id�71
County of na:6— Wa jazl . , do hereby certify that _. —
personally appeared before me this _ _ day of 41-&� _ , A= e , and acknowledge the due
execution of the forgoing wet detention basin maintenance requirements Witness my hand and official seal,
lltlllllll till!
o •y
s o/
OT %1'
� r=
pU B L\ ,*
♦��l/J11FIi1114ti11� •�, i
Sl~AL nF,
My commission expires_ Z/61/4OO¢
Form SWU-102 Rev 3 99 Page 4 of 4
{I 1

Maintenance activities shall be performed as follows
After every significant runoff producing rainfall event and at least monthly
a Inspect the wet detention basin system for sediment accumulation,refostoti,"trash accumulation,
vegetated cover, and general condition -
b Check and clear the onfrce of any -obstructions such,that,drawdown)of the temporary p661 occurs
within 2 to 5 days as designed - r, s w, , _., r
2 Repair eroded areas immediately, re -seed as necessary to maintain good vegetative cover, mow vegetative
cover to maintain a maximum height of six inches, and remove trash as needed
3 Inspect and repair the collection system (i a catch basins, piping, swales, nprap, etc ) quarterly to
maintain proper functioning
4 Remove accumulated sediment from the wet detention basin system semi-annually or when depth is
reduced to 75% of the original design depth (see diagram below) Removed sediment shall be disposed
of in an appropriate manner and shall be handled in a manner that will not adversely impact water quality
(i a stockpiling near a wet detention basin or stream, etc )
The measuring device used to determine the sediment elevation shall be such that it will give an accurate
depth reading and not readily penetrate into accumulated sediments
When the permanent pool depth reads 3.75 feet in the main pond, the sediment shall be removed
When the permanent pool depth reads 2.25 feet in the forebay, the sediment shall be removed
BASIN DIAGRAM
(fill in the blanks)
Permanent Pool Elevation 34•20
Sediment Re oval El 11.95 75
-------------- -- Sediment Removal Elevation 30•45 75%
Bottom Ele pion] .20 c,�-------�------�--------------------------------125%
------
Bottom Elevation 2 •2�
FOREBAY MAIN POND
Remove cattails and other indigenous wetland plants when they cover 50% of the basin surface. These
plants shall be encouraged to grow along the vegetated shelf and forebay berm
6 if the basin must be drained for an emergency or to perform maintenance, the flushing of sediment
through the emergency drain }shall be minimized to the maximum extent practical
F
Form SWU-l02 Rev 3 99 Page 3 of 4

STORMWATER MANAGEMENT
LOT 2 - PARKWAY BUSINESS PART(
NORTHCHASE PARKWAY AREA
The developers of this project elected not to have one stormwater
plan for the entire project. 1hev had one elan for the roadwav in the
project, and decided to have a separate plan for each lot.
Me elan submitted is for lot 2 or tract 2. The building is set
high enough to allow for a loading dock with positive drainage. Stormwater
is collected on ravoment, drained to two drop inlets and piped to the pond.
Since they propose to have gutters with downspouts on the back side of the
building, an 8 inch collector line will be installed to which the down-
spouts will be connected.
In order to comply with the County requirements for pre and post
run-off, it was necessary to reduce the outlet pipe size to 6 inches.
However, due to the dificulty in maintaining a long length of 6 inch
pipe, it was increased to 12 inch after a short run of 6 inch.
This project is on the divide between Prince George Creek and Smith
Greek. 7he stormwater from lot 2 goes to Prince George Creek.
Si�RMVlIATER
D E C E I V E
FEB 14 2000 D
PRO, # &ft021

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