SW8060347_CURRENT PERMIT_20060627

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SW
DOC TYPE
CURRENT PERMIT
APPROVED PLANS
❑ HISTORICAL FILE
❑ COMPLIANCE EVALUATION INSPECTION
DOC DATE
YYYYMMDD

O�0� W A.r�RQG
June 27, 2006
Mr. Jeffrey L. Hudson, Assistant Superintendent
Onslow County Board of Education
P.O. Box 99
Jacksonville, NC 28541
Subject: Stormwater Permit No. SW8 060347
Meadowview Elementary School
High Density Development
Onslow County
Dear Mr. Hudson:
Michael F. Easley, Governor
William G. Rcss Jr., Secretary
North Carolina Department of Environment and Naturai Resources
Alan W. Klimek, P.E. Director
Division of Water Quality
The Wilmington Regional Office received a complete Stormwater Management Permit
Application for Meadowview Elementary School on June 23, 2006. 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 060347, dated June 27, 2006, for the construction of the subject project.
Please note in parficular the operation and maintenance requirements of Section 11.4 of the
permit.
This permit shall be effective from the date of issuance until June 27, 2016 and shall be
subject to the conditions and limitations as specified therein, and does not supercede any
other agency permit that may be required.
If any parts, requirements, or limitations contained in this permit are. unacceptable, you have
the right to request an adjudicatory hearing upon written request within sixty (60) 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 Paul Bartlett or me at [phone].
Sincer 1y�f
Edward Beck
Regional Supervisor
Surface Water Protection Section
ENBlptb: S:1WQSISTORMWATERIPERMIT1060347.jun06
CC' Timothy M. Stewart, P.E., Parker & Associates, Inc.
Mike Morris, Onslow County Inspections
Paul T. Bartlett, P.E.
Wilmington Regional Office
Central Files
No ` Carolina
Atura!!!l
North Carolina Division of Water Quality 127 Cardinal Drive Extension Wilmington, NC 28405. Phone [phone] Customer Service
Wilmington Regional Office Internet: Www.ncwater uality.ore Fax [phone]
An Equal OpportunitylAffrmative Action Employer — 50% Recycledl10% Post Consumer Paper

State Stormwater Management Systems
Permit No. SW8 060347
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
Jeffrey L. Hudson and Onslow County Board of Education
Meadowview Elementary School
Onslow County
FOR THE
construction, operation and maintenance of an overall 30% low density project with a
curb outlet system and development of high density pockets with treatment by four
hydrodynamic separators, each followed by a 100' long minimum grassed swale, in
compliance with the provisions of 15A NCAC 2H .1000 (hereafter referred to as the
"stormwater rules"j 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.
Please note in particular the operation and maintenance requirements of Section 11.4 of
this permit.
The Permit shall be effective from the date of issuance until June 27, 2016 and shall be
subject to the following specific conditions and limitations:
I. DESIGN STANDARDS
1. This permit is effective only with respect to the nature and volume of stormwater
described in the application and other supporting data.
2. This permit covers the construction of 378,181 square feet of built -upon area as
follows: (a) OS buildings- 104,308 sq ft; (b) OS parking and driveways- 223,665
sq ft; and c) OS sidewalks and courtyards- 50,208 sq ft. The hydrodynamic
separator stormwater systems for the four pockets of hi h density have been
approved for the management of stormwater runoff as described in Section 1.12
on page 3 of this permit. The stormwater control for the four pockets of high
density has been designed to handle the runoff from a total of 125,300 square
feet of impervious area.
3. The overall tract built -upon area percentage for the project must be maintained
at 30%, per the requirements of Section .'1005 of the stormwater rules.
4. Approved plans and specifications for projects covered by this permit are
incorporated by reference and are enforceable parts of the permit.
Page 2 of 8

State Stormwater Management Systems
Permit No. SW8 060347
5. This project proposes a curb outlet system. Each designated curb outlet swale or
100' vegetated area shown on the approved plan must be maintained at a
minimum of 100' long, maintain 5:1 �H:V) side slopes or flatter, have a
longitudinal slope no steeper than 5 /o, carry the flow from a 10 year storm in a
non -erosive manner, maintain a dense vegetated cover, and be located in either
a dedicated common area or a recorded drainage easement.
6. Runoff conveyances other than the curb outlet system swales and piping for high
density pockets of the tract, such as erimeter ditches, must be vegetated with
side slopes no steeper than 3:1 (H:Vg
7. Unless specified elsewhere, permanent seeding requirements for the swales
must follow the guidelines established in the North Carolina Erosion and
Sediment Control Planning and Design Manual.
8. No piping shall be allowed in the low density portions of the tract except those
minimum amounts necessary to direct runoff beneath an impervious surface
such as a road or under driveways to provide access.
9. Roof drains must terminate at least 30' from the Mean high Waterline.
10. All stormwater collection and treatment systems must be located in either
dedicated common areas or recorded easements. The final plats for the project
will be recorded showing all such required easements, in accordance with the
approved plans.
11. The runoff from all -built -upon area within the permitted, high density pocket
drainage areas of this project must be directed into the permitted stormwater
control system.
12, The following design criteria have been provided in the four VortSentry®
hydrodynamic separators and must be maintained at design conditions.
ly
� No 2 x
"
No 3
No �4
a. Drainage Area, acres
0.29
0.39
2.0
0.5
Onsite, ft':
12,632
16,988
87,120
21,780
Offsite, ft :
None
None
None
None
b. Total Impervious Surfaces, ft":
11,800
15,100
77,900
20,500
c. Design Storm, inches
1", 30-Minute
Event 2 inlhr
d. Re 'd Vol.Flow Rate tat Des.storm), CFS
0.52
0.66
3.42
0.90
e. VortSentry@ Model No.
VS40
VS40
VS60
VS40
1 Inlet Invert Elev., ft;
47.6
47.0
46.4
47.1
2 Treatment Volume, CF
50.0
50.0
170.0
50.0
3 Desi n Ratio
0.005
0.007
0.010
0.009
4 Flow Rate (Capacity at DesStorm), CFS
0.6
0.665
3.42
0.90
5 Flow Partition Crest Elev., ft
48.43
47.83
47.65
47.93
6 Flow Part.Weir Crest Length, ft
0.93
0.93
1.31
0.93
7 Flow Part.Dischar a Coeffficient
3.33
3.33
3.33
3.33
8 Re 'd.Net Ann.TSS Rem. Eff. ,%
77
77
77
77
9 Permitted NA TSS Rem. Eff. ,%
86.1
86.1
80.2
86.1
f. Receiving Stream/River Basin
UT to Blue CreeklWhite oak
9. Stream Index Number
19-8
h. Classification of Water bod
SC; NSW
Design Ratio = Total Drainage Area X Runoff Coefficient 1 VortSentry® Treatment Volume
2 At 56 to 82% TSS Removal of OK110 Silica Sand (mean particle size = 110 microns, particle
range = 53 -- 150 microns)..
3 Based on 10-year rainfall data from NCDC Station 9457, Wilmington WSO Airport and
summation of removal efficiency at discrete rainfall intensity from 0.02 to 2.50 in/hr.
a As pretreatment device to 100' swale BMP (35% TSS removal efficiency) resulting in overall
treatment efficiency of 85% minimum for VortSentryG and swale in series.
Page 3 of 8

State Stormwater Management Systems
Permit No. SW8 060347
II. SCHEDULE OF COMPLIANCE
1. Curb outlet swales, vegetated areas and other vegetated conveyances, and the
stormwater management system shall be constructed in their entirety, vegetated,
and be operational for their intended use prior to the construction of any built -
upon surface, per the approved plans.
2. During construction, erosion shall be kept to a minimum and any eroded areas of
the swales or other vegetated conveyances will be repaired immediately.
3. Projects covered by this permit will maintain a minimum 30 foot wide vegetative
buffer between all impervious areas and surface waters.
4. 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. Semiannual scheduled Inspections (every six months) and as discussed
in following paragraphs.
b. Sediment removal and as discussed in following paragraphs.
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.
f. Cleaning and repair of catch basin grates, flumes, piping, and the flow
spreader mechanism.
A signed Operation and Maintenance Agreement (attached) for both the
curb outlet systems and VortSentry0 units are incorporated by reference
and are enforceable parts of this permit
The VortSentry® units shall be cleaned when the sediment depth has
accumulated to a depth of 3 feet in the treatment sump and as described in
Table 1 of the signed O&M Agreement (attached). The inspection and
maintenance log (page 2 of O&M Agreement) must be completed for each
VortSentry® unit after each rainfall event and maintenance event.
The site and VortSentry® units will be subject to inspection by the Division
of Water Quality. If Section 11.4 Items a. through f. of this permit are
determined by a Division inspector to be deficient or inadequate, the
Division may impose monitoring requirements for the VortSentry® units,
which at a minimum will include influent and effluent monitoring and
reporting of Total Suspended Solids (TSS) for a minimum of 10 rainfall
events over a 12 month period with at least one sampling event in each of
the four quarters, as defined under the Division's Preliminary Evaluation
Period (PEP) for proprietary stormwater treatment technology.
5. The permittee shall submit to the Director and shall have received approval for
revised plans, specifications, and calculations prior to construction, for any
modification to the approved plans, including, but not limited to, those listed
below:
a. Any revision to 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 or to the
drainage 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, piping, or altering any vegetative conveyance shown on the
approved plan.
Page 4 of 8

State Stormwater Management Systems
Permit No. SW8 060347
6. The Director may determine that other revisions to the project should require a
modification to the permit.
7. Records of maintenance activities must be kept and made available to
authorized personnel of DWQ. The records will indicate the date, activity, name
of person performing the work and what actions were taken.
8. 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.
9. 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. A
modification may be required for those deviations. The permittee shall submit
the Certification to the Division within 30 days of completion of the project.
10. The permittee is responsible for verifying that the proposed built -upon area does
not exceed the allowable built -upon area.
11. The permittee shall submit all information requested by the Director or his
representative within the time,frame specified in the written information request.
12. Filling in or piping of any vegetated conveyances (ditches, swales, etc.)
associated with the permitted project, except for average driveway crossings, is
strictly prohibited by any persons.
13. If the stormwater system was used as an Erosion Control device, it must be
restored to design conditions prior to operation as a Stormwater treatment
device, and prior to occupancy of the facility.
14. 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.
15. The permittee shall submit final site layout and grading plans for any permitted
future areas shown on the approved plans, prior to construction.
16. A copy of the approved plans and specifications shall be maintained on file by
the Permittee for a minimum of 10 years from the date of completion of
construction.
17. The final plats for the project will be recorded showing all required swale
easements and common areas, in accordance with the approved plans.
I11. GENERAL CONDITIONS
Failure to abide by the conditions and limitations contained in this permit may
subject the Permittee to an enforcement action by the Division of Water Qualityy,
in accordance with North Carolina General Statutes 143-215.6A to 143-215.6C.
Page 5 of 8

State Stormwater Management Systems
Permit No. SW8 060347
2. 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.
3. 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 21-1.1000; and North Carolina General
Statute 143-215.1 et. al.
4. The permit is not transferable to any person or entity except after notice to and
approvai 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 transfer 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. The permittee is responsible for compliance with
all the terms and conditions of this permit until the Division approves the permit
transfer.
5. The issuance of this permit does not preclude the Permittee from complying with
any and all statutes, rules, regulations, or ordinances imposed by other
government agencies (local, state and federal) which have jurisdiction. If any of
those permits or approvals result in revisions to the plans, a permit modification
must be submitted.
6. 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.
7. Unless specified elsewhere, permanent seeding requirements for the stormwater
control must follow the guidelines established in the North Carolina Erosion and
Control Planning and Design Manual.
8. Approved plans and specifications for this project are incorporated by reference
and are enforceable parts of this permit.
9. The permittee grants permission to DENR Staff to enter the property during
business hours for the purposes of inspecting the stormwater control system and
it's components.
10. The permittee shall notify the Division of Water Quality of any name, ownership
or mailing address changes within 30 days.
Permit issued this the 27th day of June 2006,
NORTH AROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
for Alan W. Klimek, P.E., Director
Division of Water Quality
By Authority of the Environmental Management Commission
Page 6 of 8

` State Stormwater Management Systems
Permit No. SW8 060347
Meadowview Elementary School
Stormwater Permit No. SW8 060347 Page 1 of 2
Onslow County
Designer's Certification
I, , as a duly registered
in the State of North Carolina, having been authorized to observe (periodically/ weekly/
full 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
Page 7 of 8

State Stormwater Management Systems
Permit No. SW8 060347
Page 2 of 2
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. All roof drains are located such that the runoff is directed into the system.
5. The outlet/bypass structure elevations are per the approved plan.
6. The outlet structure is located per the approved plans.
7. Trash rack is provided on the outlet/bypass structure.
8. All 1 00'vegetated swales have slopes no steeper than 5:1 slopes and are
grassed with permanent vegetation.
9. Vegetated slopes other than the 100' swales (perimeter ditches) are no
steeper than 3:1.
10. The inlets are located and at elevations per the approved plans.
11. All required design depths are provided.
12. All required parts of the system are provided.
13. The required system dimensions are provided per the approved plans.
cc: NCDENR-DWQ Regional Office
Mike Morris, Onslow County Building Inspections
Page 8 of 8

' l
1
k:1k
«tOFFICEUSEhONLYa3a ;<_
Date Received Fee Paid Permit Number
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):
Onslow County Board of Education
2. Print Owner/Signing Official's name and title (person legally responsible for facility and compliance):
Jeffrey L. Hudson, Assistant Superintendent
3. Mailing Address for person listed in item 2 above:
P.O. Box 99
City: Jacksonville State: NC Zip: 28541
Telephone Number: ( 910 ) 455-2211
4. Project Name (subdivision, facility, or establishment name - should be consistent with project name on plans,
specifications, letters, operation and maintenance agreements, etc.):
Meadowview Elementary School
5, Location of Project (street address):
Intersection of Ponv Farm Road and Firetower Road
City: County: Onslow
6. Directions to project (from nearest major intersection):
From intersection of Hwy 24 & Hwy 111, Go South 2.8+1- miles, turn right on Pony
Farm (SR 1212). Go 2.4 miles to intersection with Firetower Road (SR 1211), project is
on Southwest side of intersection.
7. Latitude: N 34' 46' 1$ 3" Longitude:_ uy 770 31' 2R-R" of project
8. Contact person who can answer questions about the project:
Name: Timoth Stewart, P_E Telephone Number: ( 910) 455-2414
11. PERMIT INFORMATION:
1. Specify whether project is (check one): X New Renewal Modification
Form SWU-101 Version 3.99 Page 1 of 4

2. If this application is being submitted as the result of a renewal or modification to an existing permit, list the
existing permit number and its issue date (if known)
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 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.
Curb outlets with grassed 5:1 swales from parking lots and drives. Playing fields
will drain to grassed swales.
2. Stormwater runoff from this project drains to the White Oak River basin.
3. Total Project Area: 30.4 acres 4. Project Built Upon Area: 28.6
5. How many drainage areas does the project have? 1
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 Infarmation MAMA
-�`-,!:.f _ '�'." �- , K3't.
raiiiage Areal _
�.. ^.'v''T'k - ''� M n ini" �= r
D au�age Ar
Y,-.9_�'L N•:uKr'^,ts,'._ vk -• � _ -.'C. 2
Receiving Stream Name
UNT to Blue Creek
Receiving Stream Class
C NSW
Drainage Area
30.4 AC
Existing Impervious* Area
0 SF
Proposed Impervious*Area
378.181 SF
% Impervious* Area (total)
2$ 6%
'Im erviousf Sctrface a!_ 414 m
' °i)rainagefArea 1�
x Drainage Area 2 t �
On -site Buildings
104,308 SF
On -site Streets
0
On -site Parking Draves223.665
SF
On -site Sidewalks
50,208 SF
Other on -site
Off -site
NIA
Total: 378,181 SF
Total:
Impervious area is defined as the built upon area including, but not limited to, buildings, roads, parking areas,
sidewalks, gravel areas, etc.
Form S WU-101 Version 3.99 Page 2 of 4

7. How was the off -site impervious area listed above derived? NA
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.
1. The following covenants are intended to ensure ongoing compliance with state stormwater management permit number
N/A as issued by the Division of Water Quality. These covenants may not be
changed or deleted without the consent of the State.
2. No more than N/A 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. Swales shall not be filled in, piped, or altered except as necessary to provide driveway crossings.
4. Built -upon area in excess of the permitted amount requires a state stormwater management permit modification prior to
construction.
5. All permitted runoff from outparcels or future development shall be directed into the permitted stormwater control
system. These connections to the stormwater control system shall be performed in a manner that maintains the integrity
and performance of the system as permitted.
By your signature below, you certify that the recorded deed restrictions and protective covenants for this project
shall include all the applicable items required above, that the covenants will be binding on ai! 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 River Basin Supplement
Form SWU-109
Innovative Best Management Practice Supplement
Form SWU-101 Version 3,99 Page 3 of 4

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
submitted to the appropriate DWQ Regional Office.
Please indicate that you have provided the following required information by initialing in the space provided
next to each item.
lnitia s 5
• Original and one copy of the Stormwater Management Permit Application Form
• One copy of the applicable Supplement Form(s) for each BMP S
• Permit application processing fee of $420 (payable to NCDENR) �t000 '(u S
• Detailed narrative description of stormwater treatment/management frA S
• Two copies of plans and specifications, including: T�
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 information on your
behalf, please complete this section.
Designated agent (individual or firm): PARKER & ASSOCIATES, INC.
Mailing Address: P.O. BOX 976
City: JACKSONVILLE State: NC Zip: 28541
Phone: [phone] Fax: ( 910 455-3441
VIII. APPLICANT'S CERTIFICATION
1, (print or type name of person listed in General Information, item 2) _ JE Ff(LE-i Lee 14 0 Sop1
certify that the information included on this permit application form is, to the best of my knowledge, correct and
that the project will be constructed in conformance with the approved plans, that the required deed restrictions
and protective covenants will be recorded, and that the proposed project complies with the requirements of 15A
NCAC 2H .1000.
Signature: _L� I _ Date:
Form S WU-101 Version 3.99 Page 4 of 4

Permit No.(SW O D1PD�- ___
(to be provided by DWQ)
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER 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
Meadowview Elementary School
Project Name:
Contact Person: Timothy M. Stewart, P.E. Phone Number: ( 910) 455-2414
Number of Lots: _NIA Allowable Built Upon Area Per Lot*: NIA
*If lot sizes are not uniform, attach a table indicating the number of lots, lot sizes and allowable built upon area
for each lot. The attachment must include the project name, phase, page numbers and provide area subtotals
and totals.
H. BUILT UPON AREA
See the Stormwater Management Permit Application for specific language that must be recorded in the deed
restrictions for all subdivisions.
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 - the total number of lots in the subdivision.
• BUA/Lot - 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.
Form SWU-104 Rev 3.99 Page 1 of 2

Calculation:
(SA x DF) - RA - OA = BUA
No. Lots Lot
Total Proposed Project Built Upon: 378,i81 SF or 8.68 AC
Total Site area = 30.4 Acres
B.U. % = 8.68 AC = 28.6%
30.4 AC
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 on the Stormwater
Management Permit Application Form, the agent may initial below.
Applicants Initials
�M S a. A 30 foot vegetative buffer is provided adjacent to surface waters. Projects in the Neuse
River basin may require additional buffers.
N Tµ S b. Deed restriction language as required on form SWU-101 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.
-rAA S c. Built upon area calculations are provided for the overall project and all lots.
N A ' S d. Project conforms to low density requirements within the ORW AEC (if applicable).
[15A NCAC 2H .1007(2)(b)]
Form SWU-104 Rev 3.99 Page 2 of 2

Permit No. SW D D LP l 34-1
(to be provided by DWQ
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
CURB OUTLET SYSTEM SUPPLEMENT
FOR LOW DENSITY DEVELOPMENT WITH CURB AND GUTTER
This .form may be photocopied for use as an original
DWQ Stormwater Management Plan Review:
A complete stormwater management plan submittal includes a stormwater management permit application, a
curb outlet system supplement, a low density supplement, design calculations, and plans and specifications
showing all stormwater conveyances and curb outlet details.
I. PROJECT INFORMATION
Project Name : Meadowview Elementary School
Contact Person: Timothy M. Stewart, P.E.Phone Number: ( 910 455-2414
Curb outlets to (check one): X Swale 0 Vegetated Area
II. REQUIRED ITEMS CHECKLIST
The following checklist outlines design requirements per the North Carolina Administrative Code Section 15A
NCAC 2H .1008.
Initial in the space provided to indicate that the following design requirements have been met and supporting
documentation is attached. If the applicant has designated an agent on the Stormwater Management Permit
Application Form, the agent may initial below. If a requirement has not been met, attach justification.
Applicants Initials
TM S a. Curb outlets direct flow to a swale or vegetated area.
'TM S b. Swales or vegetated areas receiving curb outlet flow are designed to carry, at a minimum,
Tn4 s
TM s
Tµ S
-rtA S
the peak flow from the 10-year storm.
c. Flow velocity is non -erosive for peak flow from the 10-year storm event.
d. Longitudinal slope of the swale or vegetated area does not exceed 5%.
e. Side slopes of the swale or vegetated area are no steeper than 5:1 (horizontal to vertical).
f. Length of swale or vegetated area is ? 100 feet.
TM S g. The system takes into account the run-off at ultimate built -out potential from all surfaces
draining to the system (delineate drainage area for each Swale).
N A l'M S h. Swales are located in recorded drainage easements.
I{t ruoTptj f BAN
7� S i. Grass type(s) for permanent vegetative cover specified on -detail.
'TM S J. Swale detail provided on plans.
Form 5WU-105 Ver 3.99 Page 1 of 3

in. DESIGN INFORMATION
Complete the following table. If additional space is needed the information should be provided in the same
format as Table 1 and attached to this form. Rainfall intensity data can be found in Appendix 8.03 of the State
of North Carolina Erosion and Sediment Control Planning and Design Manual.
Table 1. Swale Design Information
SwaleNW
" ixr
Drainage
�,.:.., a
�'il liar �.�'i-:i
,nape`zvzo Nils
,w' F,
� pia a�'+ _
'Grassed `
i��'� .�, ��i
.Illea a�i 1
�C
^i cY,F t
� R�t F .
I��I' he
- i�." fir` .5'`
V„
�,' Y } EE
,fk'- �I. .� _N��
rlr
J!A sS` ?
E arty p..
t..�ii & .11 -
1
0.49
0.18
0.31
0.5
1.8
5
1.0
0.6 -
2A
0.64
0.17
0.47
0.5
2.3
5
1.0
0.7
2B
1.06
0.40
0.66
0.5
3.8
5
1.1
0.9
4 :.
0.29
0.13
0.16
0.6
1.2
5
1.0
0.5
5
6
7
8
9
10
0.49
0.33
0.16
0.7
2.5
5
1.0
0.7
11
w
12
p
13
0.43
0.39
0.04
0.85
2.6
5
45 �
14
0.28
0.16
0.12
0.65
1.3
5
0:7
0.6
15
0.42
0.21
0.21
0.6
1.8
5
0.9
0.6
16
17
18
19
20
21
22
0.29
0.12
0.17
0.55
1.1
5
0.8
0.5
23
0.45
0.45
0.45
10.9
2.9
5
1.1
0.7
24 A
0.54
0.18
0.36
0.5
1.9
5
0.8
0.7
24B
0.94
0.39
0.55
0.55
3.7
5
1.4'
0.7
Form 5WU-105 Ver 3.99 Page 2 of 3

I(I. CURB OUTLET SYSTEM MAINTENANCE REQUIREMENTS
Mowing will be accomplished as needed according to the season. Grass height will not exceed six inches
at any time.
2. Swales will be inspected monthly or after every runoff producing rainfall event for sediment build-up,
erosion, and trash accumulation.
3. Accumulated sediment and trash will be removed as necessary. Swales will be reseeded or sodded
following sediment removal.
4. Eroded areas of the swales will be repaired and reseeded. Swales will be revegetated as needed and in a
timely manner based on the monthly inspections.
5. Catch basins, curb cuts, velocity reduction devices, and piping will be inspected monthly or after every
significant runoff producing rainfall event. Trash and debris will be cleared away from grates, curb cuts,
velocity reduction devices and piping.
6. Swales will not be altered, piped, or filled in without approval from NCDENR Division of Water Quality.
I acknowledge and agree by my signature below that I am responsible for the performance of the six
maintenance procedures listed above. I agree to notify DWQ of any problems with the system or prior to any
changes to the system or responsible party.
Print Name and Title: Jeffrey L. Hudson, Assistant Superint_endent..
Address: PO BOX 99, Jacksonville, NC 28541
Phone: ( 910 ) 455-221 1
Signature:
Date
3-){ -b b
Note: The legally responsible party should not be a homeowners association unless more than 50% of the lots have been sold and a
resident of the subdivision has been named the president,
I, I—Tn aa, a Notary Public for the Sta,tg of I �k?r� h Nrol 1 t1Q . County of f %�
nnfAAi y_ do hereby certify that JC,- (e LA L tit so �1 _ personally appeared before me this ! U�
day of Q rC 1 1 '2X(V and acknowledge the due execution of the forgoing infil tion basin maintenance
requirements. Witness my hand and official seal,
S rE�;
SEAL
'•, R'(/i I % r G)
%,,oO�• •�+�
I-,,rari'.0�
My commission expires er— ' 2s� 2zc
Form SWU-105 Ver 3.99 Page 3 of 3

VORTSENTRY STORMWATER TREATMENT UNITS MAINTENANCE REQUIREMENTS
Maintenance
Maintenance
The VortSentry should be inspected at regular intervals and maintained when necessary to ensure
optimum performance. The rate at which the system collects pollutants will depend more heavily on
site activities than the size of the unit, e.g., unstable soils or heavy winter sanding will cause the gril
chamber to fill more quickly but regular sweeping will slow accumulation. (
Inspection
SUN � 3 '�006
Inspection is the key to effective maintenance and is easily performed. CONTECH Stormvater �`-
Solutions recommends ongoing quarterly inspections of the accumulated sediment. Pollutah deposition and transport may vary from year to year and quarterly inspections will help insu0 V '
tief
system is cleaned out at the appropriate time. Inspections should be performed more often in the
winter months in climates where sanding operations may lead to rapid accumulations, or in equipment
washdown areas. It is very useful to keep a record of each inspection. A simple form for doing so is
provided.
The VortSentry should be cleaned when the sediment depth has accumulated to a depth of three feet
in the treatment sump. Take two measurements with a stadia rod or similar measuring device; one
measurement from the manhole opening to the top of the sediment pile and the other from the
manhole opening to the water surface. If the distance measured is less than the distance given in the
following table, the VortSentry should be maintained to ensure effective treatment.
Table 1. VortSentry Maintenance Indicators
VortSentry
model
Diameter
distance between
water surface and
top of storage sump
sediment storage
designation
ft
m
ft
m
yd3
m3
VS30
3
0.9
2.4
0.7
0.8
0.6
VS40
4
1.2
3.5
1.1
1.4
1.1
VS50
5
1.5
4.4
1.3
2.2
1.7
VS60
6
1.8
5.3
1.6
3.1
2.4
VS70
7
2.1
6.1
1.9
4.3
3.3
VS80
8
2.4
7.0
2.1
5.6
4.3
Note: To avoid underestimating the volume of sediment in the chamber, lower the measuring
device to the top of the sediment pile carefully. Finer, silty particles at the top of the pile typically
offer less resistance to the end of the rod than larger particles toward the bottom of the pile.
Cleaning
Maintaining the VortSentry is easiest when there is no flow entering the system. For this reason, it is a
good idea to schedule the cleanout during dry weather. The most effective method of excavating
pollutants from the VortSentry is to use a vacuum truck. Since there are no internal components that
block access or view of captured pollutants, maintenance is virtually identical to maintaining a catch
basin with a deep sump. Simply remove the manhole cover and insert the vacuum hose into the grit
chamber. All pollutants can be removed from this one access point. Once the system is empty,
manhole covers should be securely seated to ensure that surface runoff does not leak into the unit
from above.
If a vacuum truck is not available, a "clamshell" grab may be used, but it is difficult to remove all
accumulated pollutants with such devices.
In VortSentry installations where the risk of large petroleum spills is small, floating liquid contaminants
may not accumulate as quickly as sediment. However, any spill should be cleaned out immediately.
Motor oil and other hydrocarbons that accumulate on a more routine basis should be removed when
an appreciable layer has been captured. To remove these pollutants, it may be preferable to use
adsorbent pads since they are usually cheaper to dispose of than the oil water emulsion that may be
created by vacuuming the oily layer. Floating debris can be vacuumed or netted out separately if
accumulation outpaces sediment accumulation.
134 Page 1 of 3 ©2006 CONTECH Stormwater Solutions

Maintenance
VortSentry Inspection & Maintenance Log
Water
Date Surface to Floatable Layer
Sedimenj Thickness, ..
Distance
Maintenance �Mam enance
&�� Comments
Performed t Personnel
ii
F
1. The water depth to sediment is determined by taking two measurements with a stadia rod: one
measurement from the manhole opening to the top of the sediment pile and the other from the
manhole opening to the water surface. When the difference between the two measurements is
less than the value from the table below, maintenance should be performed.
Table 2.VortSentry Maintenance Indicators
VortSentry
model
designation
Diameter
Distance from water
surface to top of storage
sump
Sediment storage
ft
m
ft
m
yd
m
VS30
3
0.9
2.4
0.7
0.8
0.6
VS40
4
1.2
3.5
1.1
1.4
1.1
VS50
5
1.5
4.4
1.3
2.2
1.7
VS60
6
1.8
5.3
1.6
3.1
2.4
VS70
7
2.1
6.1
1.9
4.3
3.3
VS80
8
2.4
7.0
2.1
5.6
4.3
2. For optimum performance, the system should be cleaned out when the floating hydrocarbon
layer accumulates to an appreciable thickness. in the event of a spill, the system should be
cleaned immediately.
Page 2 of 3
©2006 CONTECH Stormwater Solutions 137

VORTSENTRY STORMWATER TREATMENT UNITS MAINTENANCE REQUIREMENTS
I acknowledge and agree by my signature below that I am responsible for the performance
of the maintenance procedures listed above. I agree to notify DWQ of any problems with
the system or prior to any changes to the system or responsible party.
Print Name and Title: Jeffery L. Hudson, Assistant Superintendent
Address: P.O. Box 9
Phone:
Signatu
1 �►.
I, a 0 , a Notary Public for the State of y
do hereby certify that
personally appeared before me this -211-' day ofG ,
and acknowledge,#hp, due execution of the forgoing rydinteriance procedure requirements.
,,.
Witness my:hgnxdJWR' jcial seal,
., __�_ ••-,,• ,gam
• N AR
R0
C} '1;�'gooZ •
• :. {p ycommission expires
• us •zs
40w'COV V'%'e
Page 3of3
cl.TM5.vortsentry. l

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)'.
x 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 .
Curb outlets with grassed 5:1 swales from parking lots and drives. Playing fields
will drain to grassed swales.
2. stormwater runoff from this project drains to the White Oak River basin.
3. Total Project Area: 30.4 acres
5. How many drainage areas does the project have?
1
4. Project Built Upon Area: 28.6 %
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 °Infarmattori5
µDi ainaga*ArealM&11'",IRA
4_0 rI�r'aaxtagerArear2E'-'
Receiving Stream Name
UNT to Blue Creek
Receiving Stream Class
C NSW
Drainage Area
30.4 AC
Existing Impervious' Area
0 SF
Proposed Impervious'Area
378,181 SF
% Impervious` Area (total)
28.6%
Iervtaus' StufaceArea" j`
rn1?._
...
f Dratna"geAreal_,
��;
rr L}ralnagetArea 2k 3.
On -site Buildings
104,308 SF
On -site Streets
0
On -site Parking
665 SF
On -site Sidewatks
50,208 SF
Other on -site
Off -site
NIA
Total: 378,181 SF
Total:
' Impervious area is defined as the built upon area including, but not limited to, buildings, roads, parking areas,
sidewalks, gravel areas, etc.
Form SWU-101 Version 3.99 Page 2 of 4

7. How was the off -site impervious area listed above derived? NA
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.
1. The following covenants are intended to ensure ongoing compliance with state stormwater management permit number
NIA as issued by the Division of Water Quality. These covenants may not be
changed or deleted without the consent of the State.
Z No more than NIA square feet ofany 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. Swales shall not be filled in, piped, or altered except as necessary to provide driveway crossings.
4. Built -upon area in excess of the permitted amount requires a state stormwater management permit modification prior to
construction.
5. All permitted runoff from outparcels or future development shall be directed into the permitted stormwater control
system. These connections to the stormwater control system shall be performed in a manner that maintains the integrity
and performance of the system as permitted.
By your signature below, you certify that the recorded deed restrictions and protective covenants for this project
shall include all the applicable items required above, that the covenants will be binding on all parties and persons
claiming under them, that they will run with the land, that the required covenants cannot be changed or deleted
without concurrence from the State, and that they will be recorded prior to the sale of any lot.
V. 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 River Basin Supplement
Form SWU-109
Innovative Best Management Practice Supplement
Form SWU-101 Version 3.99, Page 3 of 4