SW7060816_HISTORICAL FILE_20200611

MM RTH CAROLIN �—' Department of Environmental Qual

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SW_zo_(o j
DOC TYPE
❑ CURRENT PERMIT
❑ APPROVED PLANS
HISTORICAL FILE
❑ COMPLIANCE EVALUATION INSPECTION
DOC DATE
YYYYM M D D

ROY COOPER
Governor
MICHAELS.REGAN
Setrerory
BRIAN WRENN
Director
NORTH CAROLINA
Environmental Quality
June 11, 2020
Currituck County Schools
Attention: Mr. Matthew Mullins, Facilities, Maintenance and Transportation Director
2958 Caratoke Highway
Currituck, NC 27929
Subject: Stormwater Permit Renewal
Stormwater Management Permit SW7060816
Jarvisburg Elementary School
Currituck County
Dear Mr. Mullins:
A Division of Energy, Mineral, and Land Resources file review has determined that
Stormwater Permit SW7060816 for a stormwater treatment system consisting of an
infiltration basin system serving Jarvisburg Elementary School located at 110 Jarvisburg
Road, Jarvisburg, NC expires on January 3, 2021. This is a reminder that permit
renewal applications are due 180 days prior to expiration. We do not have a record of
receiving a renewal application.
Please submit a completed permit renewal application along with a $505.00 fee for
permit renewal. Permit application forms for renewal can be found on our website at
r 1i Ies/stormwater-pro post -construction. North Carolina General Statutes and the
Coastal Stormwater rules require that this property be covered under a stormwater
permit. Failure to maintain a permit subjects the owner to assessment of civil penalties.
If you have questions, please feel free to contact me at [phone]. 1 will be glad to
discuss this by phone or meet with you. If you would like, I can e-mail you a copy of the
application form. You can request a copy by e-mailing me at rooer.thorpeancdenr.gov.
Sincerely,
Ro r K. Thorpe
Environmental Engineer
North Carolina Department ofEnvironmental
Washington
Quality Mail
of Energy, Mineral and Land Resources
Washington Regional Office 943 Weshington Square Mall I Washington, North Carolina 27889
s+\ i 252.946.6481

klaR6
Michael F. Easley, Governor
William G. Ross Jr., Secretary
b -7 North Carolina Department of Environment and Natural Resources
- -^ c•.-2�.-.a.?<r Alan W. Klimek, P.E. Director
Division of Water Quality
January 3, 2007
Mr. C. Michael Warren, Superintendent
Currituck County Public Schools
2958 Caratoke Hwy
Currituck, NC 27929
Subject: Permit No. SW7060816
Jarvisburg Elementary School
High Density Stormwater Project
Currituck County
Dear Mr. Warren:
The Washington Regional Office received a completed Stormwater Application for the subject project on
October 10, 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 21-1.1000. We are forwarding Permit No.
SW7060816 dated January 3, 2007 to Currituck County Public Schools for the construction and operation of an
infiltration basin system to serve the Jarvisburg Elementary School located at 110 Jarvisburg Road in Currituck
County.
This permit shall be effective from the date of issuance until January 3, 2017 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 form of a written petition, conforming to Chapter 150B of the North Carolina General Statutes,
and filed with the Office of Administrative Hearings, 6714 Mail Service Center, Raleigh, NC 27699-6714, 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 Roger
Thorpe or me at [phone].
Sinc rely,
44�I upervisor
Surface Water Protection Section
Washington Regional Office
cc: Quible & Associates, P.C.
gurrituck County Inspections
,,,Washington Regional Office
Central Files
North Carolina Division of Water Quality Internet: vz One
943 Washington Square Mall Phone 12i21946-6481 NorthiCarolina
Washington, NC 27889 Fax [phone]IS Naturally

State Stormwater Management Systems
Permit No. SW7060816
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
Currituck County Schools
Currituck COUNTY
FOR THE
construction, operation and maintenance of stormwater management systems in compliance with the provisions of
15A NCAC 2H.1000 (hereafter referred to as the "stormwater rules') and the approved stormwater management
plans and specifications and other supporting data as attached and on file with and approved by the Division of Water
Quality and considered a part of this permit for an filtration basin system to serve the Jarvisburg Elementary School
located at 110 Jarvisburg Road in Currituck County.
This permit shall be effective from the date of issuance until January 3, 2017 and shall be subject to the following
specified conditions and limitations:
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 stormwater system has been approved for the management of stormwater runoff as described on page
2 of this permit, the Project Data Sheet.
3. A maximum of 4.81 acres of built upon area is allowed on this 45.2 site.
4. 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 approved plans.
5. Approved plans and specifications for this project are incorporated by reference and are enforceable parts of
the permit.

DIVISION OF WATER QUALITY
PROJECT DATA
Project Name:
Jarvisburg Elementary School
Permit Number:
SW7060816
Location:
Currituck County
Applicant:
Currituck County Public Schools
Mailing Address:
2958 Caratoke Hwy
Currituck, NC 27929
Application Date:
8/22/2006 (original)
Receiving Stream:
UT to Currituck Sound
Classification of Water Body:
SC
Total Site Area:
45.2 ac
Drainage Area to Basin:
9.15 ac
Total Impervious:
4.81 ac
Infiltration Basin Depth:
3.0 feet
Required Storage Volume:
20,604 of
Provided Storage Volume:
151,268 of
Bypass Overflow Elevation:
9.0 feet

6. No homeowner/lot.owner/developer shall be allowed to fill in, alter, or pipe any vegetative practices (such as
swales) shown on the approved plans as part of the stormwater management system without submitting a
revision to the permit and receiving approval from the Division.
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 of the project area.
In addition, the Director may determine that other revisions to the project should require a modification to the
permit.
B. 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.
SCHEDULE OF COMPLIANCE
The permittee will comply with the following schedule for construction and maintenance of the stormwater
management system.
a. The stormwater management system shall be constructed in its entirety, vegetated and operational
for its intended use prior to the construction of any built -upon surfaces except roads.
b. During construction, erosion shall be kept to a minimum and any eroded areas of the system will be
repaired immediately.
2. The facilities must be properly maintained and operated at all times. The approved Operation and
Maintenance Plan must be followed in its entirety and maintenance must occur at the scheduled intervals.
3. The permittee shall at all times provide the operation and maintenance necessary to assure the permitted
stormwater system functions at optimum efficiency 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, orifice device and catch basins and piping.
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.
5. 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 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. Mail the Certification to the Washington Regional Office, 943 Washington Square Mall,
Washington, North Carolina, 27889, attention Division of Water Quality.

A copy of the approved plans and specifications shall be maintained on file by the Permittee for a minimum of
five years from the date of the completion of construction.
III. GENERAL CONDITIONS
1. 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-
215.6(a) to 143-215.6(c).
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.
5. 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.
6. The Permittee, at least six (6) months prior to the expiration of this permit, shall submit in writing a request for
an extension along with appropriate application fee.
Permit issued this the 3 rd day of January, 2007.
H CA LINA ENVIRONMENTAL MANAGEMENT COMMISSION
Alan W. Klimek, P.E. Director
Division of Water Quality
By Authority of the Environmental Management Commission
Permit Number SW7060816

Jarvisburg Elementary School - Currituck County
Stormwater Permit No. SW7060816
Designers Certification
I, , as a duly
registered Professional Engineer in the State of North Carolina, having been authorized to observe
(periodically/weekly/full time)
the construction of the 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.
Signature
Registration Number
Date
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 outleUbypass structure elevations are per the approved plan.
_6. The outlet structure is located per the approved plans.
7. All slopes are grassed with permanent vegetation.
8. Vegetated slopes are no steeper than 3:1.
_9. The permitted amounts of surface area and/or volume have been provided.
10. All required design depths are provided.
11. All required parts of the system are provided including any vegetated filter.
12. The required system dimensions are provided per the approved plans.

Plans on top of
filing cabinet.

1, i--( to/t• l otc 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 lcorporation, individual, etc. who owns the project):
- L. rl �t4c r.��„7 P�S2I.11_ 5Ghook
2. Print Owner/Signing Official's name and title (person legally responsible for facility and compliance):
3. Mailing Address for person listed in item 2 above:
Cit �
Y'—L LUG}- `e r, State:_ C Zip:-2 7 �2
Telephone Number: ( 2 J; 2 ) ? � o - � � � �
4. Project Name (subdivision, facility, or establishment name -should be consistent with project name on plans,
specifications, letters, operation and maintenance agreements, etc.):
5. Location of Project (street address):
110
City:
County: CuCr ucic
6. Directions to project (from nearest major intersection):
J
--a ffi4L--0L3i3 lai es ea+l oE of T,1i5h , eel an') U. 5 >5-S
7. Latitude: 36 o I2 1 02_,Aj "�. Longitude:
j ��( ��� of project
8. Contact person who can answer questions about the project:
Name:J av 9-Deel,._P, CTelephone Number: 2S
II. PERMIT INFORMATION:
L Specify whether project is (check one): New Renewal
Modification
k4
Form SWU-101 Version 3.99 Page 1 of

w
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 __X High Density Redevelop General Permit Other
4. Additional Project Requirements (check applicable blanks):
_CAMA Major X Sedimentation/Erosion Control _404/401 Permit _NPDES Stormwater
Information on required state permits can be obtained by contacting the Customer Service Center at
1-877-623-6748.
III. PROJECT INFORMATION
1. In the space provided below, summarize how stormwater will be treated. Also attach a detailed narrative
(one to two pages) describing stormwater management for the project .
2. Stormwater runoff from this project drains to the PO- 59U06!3 k River basin.
3. Total Project Area: 4} , 2 p acres
4. Project Built Upon Area: ro, QL %
5. I -low many drainage areas does the project have?I
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.
'Basm Infor inauon'
_.:..
Drama e Area 1
g , ,.
' "Drainage Area 2
Receiving Stream Name
Uni'amacA To o
Receiving Stream Class
Drainage Area
5
Existing Impervious* Area
NIA
Proposed Impervious *Area
% Impervious* Area (total)
So
ImpervtoUs*,'Surface Area,
Drainage Area 1
Drainage Area 2
On -site Buildings
6 2
On -site Streets
_
On -site Parking
Q 4
On -site Sidewalks
Other on -site
g F D
Off -site
_
Total: '
Total:
lupervimr,
area is aetmea as gravel areas etc, ttne built upon area including, but not limited to, buildings, roads, parking areas,
sidewalks,
Fonn S WU-101 Version 3.99 Page 2 of 4

r
7. How was the off -site impervious area listed above derived? A ,}p AD Ar= ao }t e
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 covenants are intended to ensure ongoing compliance with state stormwater management permit number
as issued by the Division of Water Quality. These covenants may not be
changed or deleted without the consent of the State.
2. No more than square feet of any lot shall be covered by structures or impervious materials.
Impervious materials include asphalt, gravel, concrete, brick, stone, slate or similar material but 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 mortification 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

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.
I. Please indicate that you have provided the following required information by initialing 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
• 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 (o another individual or firm so that they may provide information on your
behalf, please complete this section.
Designated agent (individual or firm): 0"1 b1P k Ate- P.c.
Mailing Address:_ f d n,^o, is A7(1
City: __W7 �—HauJ)t State:_ NL zip:- 2794 9
Phone: ( 2A2 ) 2 (0 1 3300 Fax: (Z53 ) 2(,1- Zg6(2
VIII. APPLICANT'S CERTIFICATION
1, (print or type name of person listed in General Information, item 2)
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 rercons
and protective covenants will be recorded, and that the proposed project complies with the requiremestitints of 1.5A
NCAC 2H innn e
Signature:
Date: 2 7 `-d
Form SWU-101 Version 3.99 Page 4 of 4

6Zuible
Quible & Associates, P.C.
ENGINEERING • ENVIRONMENTAL SCIENCES • PLANNING • SURVEYING
SINCE 1959
October 9.2006
Mr. Joseph Gyamli
NCDENR
Division of Water Quality
943 Washington Square Mall
Washington, North Carolina 27889
Re: Stomwater Management Plan (SW7060816)
Jarvisburg Elementary School
Jarvisburg, Currituck County
Dear Mr. Gyamli:
Po. Drawer 870
K'Jty Hawk, INC 27949
Phone: [phone]
Fax: [phone]
PRINCIPALS
Sean C. Boyle, PE.
Joseph S. Lasseter C.E P.
Eduardo J. Valdivieso. P.E.
ASSOCIATES
Joseph J. Anlaut P.E.
Katherine C. Moahello, P.I. S.
}
Enclosed, please find a revised stonnwater management permit application package for the above referenced
site. Changes have been made to address comments from your September 201h letter as follows:
Continent: Please provide a detailed soil profilefin- the soil borings indicating the various .roil types
encountered with a briefdeacription oftheir properties, depth to water table, seasonal high
Tinter table, etc.
Response: A copy of the soi Is report is attached which includes borings within in filtrat ion areas (13M P-
2 and 13MP-3) and Field Infiltration Testing which demonstrates infiltration rates ol'24-29
inches per hour, We have also performed one additional boring within the northwest corner
of the site to ensure consistency. A single boring log for this boring is also attached.
Comment: Location maps of the soil borings and the slate they were performed should also be
provided.
Response: A location map of the soil borings is located within the soils report.
Continent: On page 2 ofthe application, please clttrifv the difference between the proposed innpervious
sofance area of 4.93 acres ven:vus the total breakdotwn of innpervious surfaces of 4.81 acres.
Response: The 4.93 acre reference is from an earlier layout and was errantly left on the application.
The enclosed application includes a revised page 2 which has been corrected to reflect the
appropriate 4.81 acres.
Continent Missing initials on page 4 of application: Please place your initials in the space provided
to indicate that the required documents have been provident.
Response: Application has now been initiated where appropriate.

Comment: Even though a benchmark has been provided to determine sediment accumulation in the
basin and associated pretreatment devices, please note that the sediment shall be removed
when the sediment reaches 75%of the depth ofthe basin. Tlris value nvould be different far
the different pretreatment devices due to dyi Lrcnces in elevations. A value of2.25 ft. can
he used to complete the Supplement Form on page 3 for the main basin.
Response: A detail of the benchmark has been added to the details sheet. We propose placing these
benchmarks in three locations as now noted on the grading and drainage plan. To avoid
confusion, these benchmarks are all keyed to true elevation from mean sea level. Theclean-
out elevation is noted on each detail for the given benclunarks.
Comment: please ensure that the package showing the calculations is sealed.
Response: the narrative and calculations are sealed and included with this package.
The following items are included and shall be considered part of this submittal package:
1. Two (2) copies of the Stormwater Management permit Application Form w/two (2) copies
ofthe Dry Infiltration Basin Supplement
2. Stormwater Management Plan Narrative
3. Copy of Soils Report and supplementary boring log
4. Two (2) copies of the Site Plan sheets Cl-C3, C5-C8, C13
If you have any questions, or require any additional information, please do not hesitate to contact me at (252)
261-3300.
Sincerely,
Qj�iblc A�sso iat�.
4avid Deel, P.6.
enc: as stated

MEMORANDUM
October 9, 2006
Subject: Jarvishurg Elementary School
Stormwater Infiltration Basin Boring
To: David A. Dee], P.E.
From: Warren Eadus, L.G., Quible & Associates, P.0
On October 5, 2006, Brian Rubino, P.G. (Quible) advanced a soil boring in the proposed infiltration
basin as indicated on your site sketch and attached with this memorandum.
According to the USDA Soil Conservation Service Soil Survey of Currituck County, the soils in the
vicinity of the site appear to be mapped as Conetoe Loamy Sands (CnA). Conetoe loamy sands are well
drained low lying ridges along streams in Currituck County A copy of the relevant portion of the USDA
Soils Map for Currituck County, with the site identified, has been enclosed.
In general, the soils in the location of boring SB-I (to depths of six feet) are inter -bedded fine to coarse
sands with some silt. A detailed boring log is included with this memorandum. The depth to saturated
soils on October 5, 2006 was approximately 50 inches below ground surface. Based on the soil boring
logs it appears that the seasonal high water table may be nearly four feet below ground surface in the
vicinity of SB-I.
Please do not hesitate to contact me or Brian if you have any questions or require any additional
information.

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Stormwater Management Plan Narrative
Jarvisburg Elementary School s 025153 '
August 17, 2006 % INF�?°
General
NG0r
The following narrative will detail the stormwater management plan for the proposed Jarvisburg Flementary School
development in Harbinger, Currituck County, NC.
The Jarvisburg Elementary School site consists of a proposed new elementary school with associated parking and
utility infrastructure. The project site consists of 45.20 acres on the southwest side of Forbes Road (also known as
Jarvisburg Road) approximately 0.38 miles east of the intersection of Forbes Road and U.S. 158.
The proposed stormwater management method to serve the facility will consist of a dry infiltration basin / infiltration
swale system with enough temporary storage capacity to store the runoff generated by a 7.37 inch rainfall event. The
following narrative, application and calculations will demonstrate the parameters of this design which will illustrate
an effective stormwater management system in full compliance with all stale regulations.
Summary of Existing Conditions
The Jarvisburg Elementary School site is currently in use as a County athletic facility (ballfields) with a single gravel
roadway traversing the property in an east -west direction. There are currently no BMP's to address stormwater from
the site.
Summary of Proposed Conditions
The Jarvisburg Elementary School site consists of a proposed new elementary school with associated parking and
utility infrastructure. Stormwater management improvements will be needed to control the runoff from proposed
impervious construction. Runoff from all new impervious areas is proposed to be collected via storm sewer /
infiltration swales and conveyed to a proposed dry infiltration basin located at the northeast corner of the site. The
drainage area containing all of the proposed improvements will consist of 398,614 sf of area (53.9% impervious)
which will generate 20,604 of of runoff from a I" rainfall event. The proposed dry infiltration basin will have
temporary storage capacity of 151,268 of (equivalent to the runoff produced from a 7.34" rainfall event).
Considering that the volume of the 10 year storm event for this area is widely accepted to be 4.3 inches of rainfall,
this basin design will completely capture and infiltrate the 10-year storm without discharge to surrounding systems,
representing an actual reduction of off -site (lows from the pre -development condition.
Stormwater Collection, Treatment, Storage and Disposal
Collection
The stormwater runoff will be collected via site grading, drop inlets and storm sewer, and infiltration swales and
directed to an infiltration basin located in the northeast corner of the site.

Treatment
The basin will offer several methods of stormwater runoff treatment prior to release. Runoff from paved areas will
sheet flow to drop inlets and be directed to the infiltration swale and infiltration basin via a storm sewer system.
Large particulates and debris will accumulate at the drop inlet grates. Drop inlets will be constructed with sumps
within the basins which will also serve to trap large debris and sediment within the drop inlets (which will need to be
cleaned periodically as part of the maintenance of the system).
The basin bottom will be grassed according to the general seeding specifications and maintained according to the
operation and maintenance plan. The runoff will undergo filtration of fine particulates and pollutants by the
vegetation within not only the basin and Swale bottoms but also the basin and swale side walls which will also be
seeded according to the general seeding specifications. Within the basin, treatment is available when the stormwaler
runoff infiltrates into the subsurface. When the water passes through the void spaces between the particles of soil
material particulates and pollutants that have a particle or grain size larger than the void size will be filtered out. In
addition some pollutants will adsorb to the surface of the soil particles. The benefit of this adsorption will prevent
the pollutants from reaching the water table and in some nutrient and microbe rich areas existing within the
subsurface the pollutants will be consumed as food and undergo a natural biodegradation.
If the weather yields precipitation that exceeds the storage capability of the basin system then the accumulated runoff
will overflow the system via an emergency overflow weir (grass -lined) located at the east edge of the property.
Storage
This infiltration basin system will offer storage above the ground surface within the basins. The runoff generated by
a 1 inch storm will require 20,604 ft' of storage. The storage available above the ground surface is 151,268 110
(equivalent to runoff generated by 7.34 inch storm). Additional storage is also available within the void spaces in
basin subsurface between the basin bottom and the seasonal high water table and the additional separation between
the submerged basin side -slopes and the seasonal high water table. A more detailed discussion of subsurface storage
volume can be found within the soils section of this narrative.
Disposal
As discussed in previous sections the majority of stomtwater runoff entering this management system will be
infiltrated, therefore infiltration will be the primary source of disposal. The system has been designed with storage
so that this site will have the capability to handle in excess of a 1 inch storm event. At such time that the capacity
were to be exceeded the system will then overflow into the adjacent outfall ditch via a grass -lined weir. Weir
calculations and flow velocity calculations are included in the appendix.

Soils
Quible & Associates performed on -site soil borings to verify soil type and determine elevation of mean high
groundwater. Information collected on site generally agrees with the United States Department of Agriculture, Soil
Conservation, Service Soil Survey of Currituck County, which map the soils for this site as follows:
CnA - Conetoe loamy sand, 0 to 3 percent slopes, with moderately rapid permeability.
As mentioned in the storage section of this narrative a more detailed description of the method of determining the
subsurface storage volume available as a function of the soils would be discussed in this section. The following
determination of the volume available in the subsurface is based on the definition of Porosity: The ratio of volume of
void spaces in a rock or sediment to the total volume of the rock or sediment.
Volume of pore space
Porosity = � = x 100
Volumeof bulk -solid
Table 10.3. Typical Total Porosities.'
Male lal
Total�Porosrty(%)" '..
Unaltered granite and gneiss
0-2
Quartzites
0-1
Shales, slates, mica-schists
0-10
Chalk
5-40
Sandstones
5-40
Volcanic tuff
30-40
Gravels
25-40
Sands
15-48
Silt
35-50
Clays
40-70
Fractured basalt
5-50
Karst limestone
5-50
David M. Nielson, Editor, Practical Handbook of Ground -Water Monitoring, (Michigan: Lewis Publishers, Inc.,
1991), pg. 675
r David M. Nielson, Editor, Practical Handbook of Ground -Water Monitoring, (Michigan: Lewis Publishers, Inc.,
1991), pg. 406
' Fletcher G. Driscoll, Ph.D., Principle Author and Editor, Groundwater and Wells. 2"d edition, (Minnesota: Johnson
Filtration Systems Inc., 1986), pgs. 66-67

Limestone, dolomite 1 0-20
Table 5.1 Porosities for Common Consolidated and Unconsolidated Materials'
Unconsolidated
Sediments
("/")
Consolidated Rocks .z ='
(%) .
Clay
45-55
Sandstone
5-30
Silt
35-50
Limestone/dolomite
1-20
Sand
25-40
Shale
0-10
Gravel
25-40
Fractured crystalline rock
0-10
Sand & gravel mixes
10-35
Vesicular basalt
]0-50
Glacial till
10-35
Dense, solid rock
<1
Based on the information in the proceeding tables a value of 20% void space has been assigned to the sandy soils
located on the subject parcel. This value should be considered conservative. A distance of two vertical feet is to be
maintained between the infiltration basin bottom and the seasonal high water table elevation. Soil borings indicate a
seasonal high water table of approximately 4.0 feet MSL. The proposed infiltration basin bottom elevation was
designed at an elevation of 6.0 MSL, providing for a vertical separation of 2.0 feet. Within this separation distance
exists a volume of soil containing a minimum of approximately 20% void space. This void space will become filled
with water and provides for an additional volume for stormwater runoff storage.
Calculations
A set of stormwater calculations can be found within appendix portion of this narrative.
Conclusions
The proposed stomlwater management plan for this site will handle in excess of the 1.0 inches of stormwater runoff
generated by all surfaces, pervious and impervious located within the drainage area by incorporating an infiltration
basin in conjunction with infiltration swales. The proposed system will offer preliminary, primary and secondary
methods of treatment as well as an alternate method of disposal should the capacity be exceeded. The soils on site
have infiltration rates approximately 2.0 inches per hour, conditions ideal for an infiltration basin system. This
proposed design will more than adequately serve the stormwater management requirements of this site.
' David M. Nielson, Editor, Practical Handbook of Ground -Water Monitoring, (Michigan: Lewis Publishers, Inc.,
1991), pg. 675
r David M. Nielson, Editor, Practical Handbook of Ground -Water Monitoring, (Michigan: Lewis Publishers, Inc.,
1991), pg. 406
' Fletcher G. Driscoll, Ph.D., Principle Author and Editor, Groundwater and Wells 2 d edition, (Minnesota: Johnson
Filtration Systems Inc., 1986), pgs. 66-67

24

Qu' i b l e SINCE 1959
JOB 0_303 3 --IWM
SHEET NO.
OF
Quible & Associates, P.C.
ENGINEERING • ENVIRONMENTAL SCIENCES • PLANNING • SURVEYING
8 Juniper Trail • P.O. Drawer 870 • Kitty Hawk, INC 27949
Phone [phone] • FAX [phone] • E-Mail: [e-mail]
CALCULATED BY [)AD DATE
CHECKED BY
SCALE
DATE
'... GIeU .
Area _
A✓'..A
Vol
z Vol
.._
35 9&S rl
36,93
.50, 6 74 , �.
Sol A
_.
64,160q,
64,601

QuIble SINCF. 19.59
JOB 03033 -'5U1/tit
SHEET NO.
OF
Quible & Associates, P.C.
ENGINEEPING • ENVIRONMEMAL SCIENCES • PLANNING • SURdEYING
8 Juniper Trail • P.O. Drawer 870 • Kitty Hawk, NC 27949
Phone [phone] • FAX [phone] • E-Mail, [e-mail]
CALCULATED BY ►)A.t) DATE
CHECKED BY _. DATE
SCALE

JOB�jn_�_S =,5�01 p,i�r�r�CJ Ill�r+o of r�
QB ibI`/ SINCE 1959
Quible & Associates, P.C.
ENGINEERING • ENVIRONMENTAL SCIENCES • PLANNING • SURVEYING
8 Juniper Trail • P.O. Drawer 870 • Kitty Hawk, INC 27949
Phone [phone] • FAX [phone] • E-Mail: [e-mail]
SHEET NO.
OF
CALCULATED BY
DATE
CHECKED BY
DATE
SCALE

u I b' V S/NCF /959
Quible & Associates, P.C.
ENGINEERING • ENVIRONMENTAL SCIENCES • PLANNING • SURVEYING
8 Juniper Trail • P.O. Drawer 870 • Kitty Hawk, INC 27949
Phone [phone] • FAX [phone] • E-Mail: [e-mail]
JOB 0.30.3:3' j10/wi WGfd 1�1r F c; % �li .i%�
SHEET NO. OF
(�
CALCULATED BY 1 A jp DATE
CHECKED BY
SCAI F
DATE
if?ewrra�5 -, �F80�f• C� C=o.3 .....
G=0.Y347.
S:6 CFI
147 Ac.) .......
pevraG5l11 '2C".2 CG=o 3
e ®-
DruIAaje Area lo,o6� 3�:4 fo.zsl fly.)
C �'
prainaJe �1rea� ,L-,3�5 aF (0 /45.11c,)
Iw Pe> vry 5' �74 of L9 C 0
hefv,ov�; zot F @ c_fo. 3 _
e © !
Drarnc�6 aver =, 5, 71 ` ip,131 A,,)
ZmP�°fvrn,�3 • .5, 37��F G� c 0 9 - I
pesvrous". 147-if.__ @c-.o.3.

Q u' b l e SINCE /959
Quible & Associates, P.C.
ENGINEERING • ENVIRONMENTAL SCIENCES • PLANNING • SURVEYING
JOB_O.�i�3;j' Jl(J✓4NIUGi'Py ����Nr'ni+ T P5/ e4
SHEET NO. OF �-�-
CALCULATED BY DATE
8 Juniper Trail • P.O. Drawer 870 • KiTly Hawk, INC 27949 CHECKED BY DATE
Phone [phone] • FAX [phone] • E-Mail [e-mail] SCALE

Q `M I b l e S/NCF, 1959
JOB03? Siofm6afel111n z a��e-+ Pi�ESrzhn
SHEET NO. OF
Quible & Associates, P.C.
ENGNEERING • ENVIRONMENTAL SCIENCES • PLANNING • SURVEYING
8 Juniper Trail • P.O. Drawer 870 • Kitty Hawk, NC 27949
Phone [phone] • FAX [phone] • E-Mail; [e-mail]
ctg
7
Q-_=
CALCULATED BY
CHECKED BY
SCALE
DATE
DATE

Q`' S b l e SINCE 1959
Quible & Associates, P.C.
ENGINEERING • ENVIRONMENTAL SCIENCES • PLANNING • SURVEYING
8 Juniper Troll • P.O. Drawer 870 • Kitty Hawk, NC 27949
Phone [phone] • FAX [phone] • E-Mail: [e-mail]
Al..c je A ea
lv.,perV)GVS '.
v
JOB n 3O S�C e,C - non c„.rep.. ,'-
� I
SHEET NO. OF
CALCULATED BY DATE
CHECKED BY DATE
SCALE
GD 3 /0 A" _.
l_ F
,g C_ 0.3:-. .
r
LP
0.3; ....

03033 - 5W Th Jloly; -�j)upq '
1
J
HYDRAULIC GRADE LINE
PROJECT
Outlet
JUNCTION LOSS
Water 0° O°
STATION Surface
L S
o ! H o f
V 2
1.3
0,5 Rim
Elev.
7
Vo
O
QI
VI
QI V l
I �9 HI
ANGLE Ho Ht Ht
W t
FINAL surlaee Elev.
Hi H
E1ev.
(1)
(2) (3) (4)
(5) (8) (7)
(8) (9)
(10)
(11)
(12) (13)
(14)
(15) (16) (17)
(18) (19) (20) (21)
7,
0 .0003 ,03
1,59 0.01
7z
- 0
J5,
3
37 z
,oa3,0
7 .0
S.AA
zo
- - o,,�
-•�L_
OX;L .0
1.20 , 0
4,5'S-
S
5 4.53
oon+.o3
.44--
'
,off .03
,Oh I
1A , 01
2
/.y
01
of 3 ,R4
- 0 IF
1.6- , o
2.o8
.15
- , of
I ��
�
-
- 1 / 77
- Jr" �
,oona.o
IS
-
9.
08 216 -
'o" . A
.0003 ,o
-
145 ,o
3Eh
I,ohO
- of
90° O-vl
04-
-
_ .0
o 39
3 -Q" 3.7.
2' 4613 .0+
0 . 0
0
00 A. A
4 20
b
-
- - _
_
.L412
_
_ 0
o
2
H, - 0.35 Ho=
2
0.25 He=
2
K
FINAL H
H1+ H1
90' K
80' K
- 0.70 50' K -
0.47 20' K 0.16
2g
20
9
9
- 0.66 40' K -
0.38 15' K = 0.10
HI=
He+
H1+ H,
70' K
- 0.61 30' K -
0.28
60' K
- 0.55' 25' K =
0.22

03033 - SvJlh - 7a✓uin bv✓9 Clem
cc
c
m
A
p N
o L
C J
N
a
0_
o_.
CL
�r
m 3
N
30
O
`3
a
-a
�T
0
0
3
HYDRAULIC GRADE LINE
PROJECT
0
WEE
2 2 2
H, - 0.35 J_ H. 0.25 Y^ He= KJ_ FINAL H = H(+ H1
29 29 2g
H1= H.+ H,+ He
90' K =
0.70
50' K =
0.47 20' K = 0.16
80' K =
0.66
40' K =
0.38 15- K 0.10
70' K =
0.61
30' K =
0.28
60' K =
0.55'
25' K =
0.22

JOB 030 � -
Quib'e SINCE 1959
Quible & Associates, P.C.
ENGINEERING • ENVIRONMENTAL SCIENCES • PLANNING • SURVEYING
8 Juniper Trail - P.O. Drawer 870 - Kitty Hawk, INC 27949
Phone [phone] - FAX [phone] - E-Mail: [e-mail]
SHEET NO.
OF
CALCULATED BY
DATE
CHECKED BY
DATE
SCALE

03033 3
"0
Outlet
i ` Do + 0.4La
pipe
diameter (Dp) L
a
Tai w r 500
50 100
Discharge (ft3/sec)
Curves may not be extrapolated.
Figure 8.06b Design of outlet protection from a round pipe flowing full, maximum tailwater condition (Tw 2 0.5 diameter).
a
1000
:--8.06.4

03033
Pipe Owfekl( �y
3Do
T
Outlet
Do + 0.4La
pipe
diameter (Do) 1 _�
a
_ Tal7water0.5Do
2
50 100
Discharge (ft3lsec)
Curves may not be extrapolated.
Figure 8.06b Design of outlet protection from a round pipe flowing full, maximum tailwater condition (Tw 2 0.5 diameter).
8.06.4

Ef036?�3
Pips ovlfai) w
3D0
Outlet W = On + n ai _ ,��
-- iw 4uu 500 1000
Discharge (ft3/sec)
Curves may not be extrapolated.
Figure 8.06b Design of outlet protection from around pipe flowing full, maximum tailwater condition (T,N 2 0.5 diameter).
8.06.4

Michael F. Easley, Governor
William G. Ross Jr., Secretary
North Carolina Department of Environment and Natural Resources
Alan W. Klimek, P.E. Director
Division of Water Quality
September 20, 2006
Mr. Michael Warren
Currituck County Public Schools
2958 Caratoke Hwy
Currituck, NC, 27929
Subject: Stormwater Review SW7060816
7arvisburg Elementary School
Currituck County
Dear Mr. Warren:
This office received a Coastal Stormwater Permit application and plans for the subject project on
August 22, 2006. A preliminary review of the project indicates that before a State Stormwater permit can
be issued the following information must be provided, corrected, or clarified:
,/• Please provide a detailed soil profile for the soil borings indicating the various soil types
encountered with brief description of their properties, depth to water table, seasonal high water
table, etc.
v Location maps of the soil borings and the date they were performed should also be provided.
On page 2 of application, please clarify the difference between the proposed impervious surface
area of 4.93 acres versus the total of the breakdown of impervious surfaces 4.81cres.
✓• Missing initials on page 4 of application: Please place your initials in the space provided to
indicate that the required documents have been provided.
• Even though a benchmark has been provided to determine sediment accumulation in the basin
and associated pretreatment devices, please note that sediment shall be removed when the
sediment reaches 75% of the depth of the basin. This value would be different for the different
pretreatment devices due to differences in elevations. A value of 2.25 It can be used to complete
the Supplement Form on page 3 for the main basin.
• Please ensure that the package showing the calculations is SEALED.
The above requested information must be received in this office prior to October 20, 2006 or your
application will be returned as incomplete. The return of this project will necessitate resubmittal of all
required items including the application fee. If you need additional time to submit the required
information, please mail or fax your request for time extension to this office at the Letterhead
address.
You should also be aware that the Stormwater Rules require that the permit be issued prior to any
development activity. Construction without a permit is a violation of 15A NCAC 21-1.1000 and North
Carolina General Statute 143-215.1 and may result in civil penalties of up to $10,000 per day.
Please reference the Stormwater Project Number above on all correspondence. If you have
questions, please feel free to contact Roger Thorpe at 252-948-3923 or Samir Dumpor 252-948-3959.
N'oyg` hCa
Tal turr,
North Carolina Division of Water Quality Washington Regional Office Phone [phone] FAX [phone]
Intemet h2o.enrstale.nc.us 943 Washington Square Mall, Washington, NC 27889
An Equal OpportunitylAffinnative Action Employer— 50% Recycled110% Post Consumer Paper
Customer Service
1-877-623-6748
1-'JF7

Sincerely,
C���
Joseph Gyamfi
Environmental Engineer
Washington Regional Office
cc: David A. Deel, RE
Washington Regional Office

1 .rC • K
m VOOLA L&'
.•: �.' �sW 7��081�
FINdiPIC1Al RESPONSIBILITY/OlA/IiIERSFIIP FORD
SEDIMENTATION POLLUTION CONTROL ACT
No person may initiate any land -disturbing activity on one or more acres
form and an acceptable erosion and sedimentation control plan have bee
Land Quality Section, N.C. Department of Environment and Natural Resoi
the question is not applicable or the a- mail and/or fax information unavailab
Part A.
Project
2. Location of land -disturbing activity: County Currl�u�.l City
this
the
J. if
AUG 3 ? 2006 i i iiwL`DD
E
r - 12006
Highway/Street IID JU1 rn _g�, Latitude 360l2' o2.4 ° N Longitude
3. Approximate date land -disturbing activity wiil commence: ov OO
4. Purpose of development (residential, commercial, industrial, institutional, etc.): IA5Jj.JL ionul •
5. Total acreage disturbed or uncovered (including off -site borrow and waste areas): 1 3
6. Amount of fee enclosed: $_ 7OD °° . The application fee of $50M per acre (rounded
up to the next acre) is assessed without a ceiling amount (Example: a 9-acre application fee is $450).
7. Has an erosion and sediment control plan been filed? Yes No Enclosed X
8. Person to contact should erosion and sediment control issues arise during land -disturbing activity:
Telephone__ 7 5* ,- 2 3� - 1� Cell #
Fax# 42S2) 232 -3 319
9. Landowner(s) of Record (attach accompanied page to list additional owners):
.Lurr.�G Gou�l./
Name Telephone Fax Number
. f4ox 3q
Current Mailing Address Current Street Address
City State Zip City
State
10. Deed Book No. 2 A 3 Page No. z 9 2 Provide a copy of the most current deed.
Part B.
Person(s) or firm(s) who are financially responsible for the land -disturbing activity (Provide a
comprehensive list of all responsible parties on an attached sheet):
Lurrikek
Name E-mail Address
Current Mailing Address Current Street Address
Gurri�uc A1C a79z9
City State Zip City State Zip
Telephone (2 a 3� - 22 Fax Number__(''_� ZS.i 3

2. (a)'if the Financially Responsible Party is not a resident of North Carolina, give name and street address
of the designated North Carolina Agent
Name
E-mail Address
Current Mailing Address Current Street Address
City State Zip City State Zip
Telephone Fax Number
(b)'If the Financially Responsible Party is a Partnership or other person engaging in business under an
assumed name, attach a copy of the Certificate, of Assumed Name. If the Financially Responsible
Par
ty is a Corporation, give name and street address of 4he Registered Agent
Name of Registered Agent
Current Mailing Address
City State Zip
Telephone
E-mail Address
Current Street Address
City State Zip
Fax Number
The above information is ,true and correct to the best of my knowledge and belief and was provided
by me under oath (This form must be signed by the Financially Responsible Person if an individual
or his attorney -in -fact, or if not an individual, by an officer, director, partner, or registered agent with
the authority to execute instruments for the Financially Responsible Person). I agree to provide
corrected information should there by any change in the information provided herein.
C rrtic,. dl IAlarre-n
Type or print nam Title or Authority.4 —� rr i (uc� 1 P,bIjG SLl�o�g
I
Sire ��
Date
1, wJ� rn a Notary Public of the County of u h Ij C, (�
Sa rah L. 15 r_j
State of North Carolina, hereby certify that _ ; C'�A ZIyVQ r r e Y) appeared
personally before me this day and being duly sworn acknowledged that the above form was
executed by him. Witness my hand and notarial seal, this day of R u 20�_
NOMiyAgR�Yo�mPPUmRBiIsTsGUicCNnKOFRxCH OpiUreNCs TAAY
O5LINDA6
Notary
F04
I I D )
My commission expires j'

1

Quible
Quible & Associates, P.C.
PG. Drover 870
Kitty Hawk. NC 27949
ENGINEERING • ENVIRONMENTAL SCIENCES • PLANNING • SURVEYING
AUG 2 2 20U6
Phone. [phone]
Fm 252-261-1260
SINCE 1959
PRINCIPALS
August 17, 2006
> 1 _p ry,/�
415i� A`0
Sean C. Boyle, P,E
Joseph S Lassiter, C.E.P
Eduardo
J. Vadiveso, P.E.
Mr. Bill Moore ASSOCIATES
Joseph J. Anlouf, PE.
NCDENR Katherine C. Marchello, P.L.S.
Division of Water Quality
943 Washington Square Mall
Washington, North Carolina 27889
Re: Stormwater Management Plan (High Density Application)
Jarvisburg Elementary School
Jarvisburg, Currituck County
Dear Mr. Moore:
On Behall'of the Currituck County Board of Education, Quible & Associates, P.C. hereby submits for
review and approval a High Density Stormwater Management Permit Application package for the above
referenced proposed Elementary School in Jarvisburg, Currituck County.
Although the overall site coverage is less than 11%, the project falls within the high density classification
because of the concentration of development. The enclosed narrative will explain in detail the
slormwater management of this site.
The following items are included and shall be considered part of this submittal package:
l . Review ],-cc Check for $420.00
2. Two (2) topics of the Stormwater Management Permit Application Forni w/two (2) copies
of the Dry Infiltration Basin Supplement
3. Stormwater Management Plan Narrative
4. Two (2) copies of the Site Plans
If you have any questions, or require any additional information, please do not hesitate to contact me at
[phone].
Sincerely,
CQ blblc & Associates, P.C.
David A. Deel, PE
enc: as stated
cc: Mr. Bruce MacDonald, Currituck County Public .Schools