SW7050926_CURRENT PERMIT_20200316

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SW
DOC TYPE
� CURRENT PERMIT
❑ APPROVED PLANS
❑ HISTORICAL FILE
DOC DATE
25,?oD3l�
YYYYMMDD

ROY COOPER
Governor
MICHAEL S. REGAN
Secretary
MAN WRENN
Acting Director
NORTH CAROLINA
Environmental Quality
March 16, 2020
Town of Kitty Hawk
Attention: Mr. Andy Stewart, Manager
P.O. Box 549
Kitty Hawk, NC 27949
Subject: Stormwater Permit No. SW7050926 Renewal
Kitty Hawk Fire Station
High Density Stormwater Project
Dare County
Dear Mr. Stewart:
The Washington Regional Office received a Stormwater Management Permit
Application for renewal of the subject permit on February 12, 2020. Staff review of the
application has determined that the permit can be reissued. We are forwarding Permit
No. SW7050926 dated March 16, 2020, for the continued operation of the subject
project.
This permit, upon its effective date, will replace all previous State Stormwater permits for
this project. This permit shall be effective from .Lune 14, 2020 until .tune 13, 2028 and
shall be subject to the conditions and limitations as specified therein, and does not
supercede any other agency permit that may be required. 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 me at [phone].
Sincerely,
Rog r K. Thorpe
Environmental Engineer
North Carolina Department of Environmental Quality 1 Division of Energy, Mineral and Land Resources
Washington Regional Office 1943 Washington Square Mall I Washington, North Carolina 27889
N F� i1C1L iNA
252 946.6481

STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENTAL QUALITY
DIVISION OF ENERGY, MINERAL, AND LAND RESOURCES
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
Town of Kitty Hawk
Kitty Hawk Fire Station
Located at 859 W Kitty Hawk Rd., Kitty Hawk, NC, Dare County
FOR THE
construction, operation and maintenance of three sand filters and four underground
infiltration trenches 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 Energy, Mineral, and Land Resources (Division) and considered a
part of this permit.
This permit shall be effective from June 14, 2020 until June 13, 2028, and shall be
subject to the following specified conditions and limitations:
I. DESIGN STANDARDS
This permit is effective only with respect to the nature and volume of stormwater
described in the application and other supporting data. The following criteria are
approved as meeting the stormwater rules for this project:
a. The total area for this project is 1.92 acres.
b. Total allowable impervious area for this project site is 1.07 acres.
C. The building and the two concrete aprons will each use a sand filter to
treat stormwater runoff.
d. The drive and parking area will use porous pavement to allow stormwater
to infiltrate down into four areas that are tied together as infiltration
trenches/basins.

2. This stormwater system has been approved for the management of stormwater
runoff as described in Section 1.6 of this permit. The stormwater controls have
been designed to handle the runoff from 46,439 square feet of impervious area.
3. The tract will be limited to the amount of built -upon area indicated in Section 1.6
of.this permit, and per approved plans.
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 the
approved plans.
5. The runoff from all built -upon area within the permitted drainage areas of this
project must be directed into the permitted. stormwater control systems.
6. The following design criteria have been provided in the sand filters and must be
maintained at design condition:
Building SF Midgett Rd SF Kitty Hawk Rd
a. Drainage Area, acres: 0.337 0.143 0.1924
b. Total Impervious Surfaces, ft2: 14,673 6,225 8,380
C. Design Storm, inches: 1 1 1
d. Sediment Chamber Area, ft2: 600 60 75
e. Sand Chamber Area, ft2: 200 60 75
f. Sediment Chamber Volume, ft3: 2,898 90 - 112.5
g. Sand Chamber Volume, ft3: . 966 90 112.5
h. Top/Bypass Elevations, FMSL: 5.00 5.25 4.50
i. Invert Out Elevations, FMSL: 2.58 3.00 2.25
j. Receiving Stream/River Basin: Kitty Hawk Bay/ Pasquotank
k. Stream Index Number 30-19
I. Classification of Water Body: "SC"

7. The following design criteria have been provided in the infiltration
trenches/basins and must be maintained at design condition:
Area 1 Area 2
Area 3
Area 4
a.
Drainage Area, acres:
0.04 0.14
0.04
0.11
b.
Total Impervious Surfaces, ft2:
1,307. 4,356
1,742
3,920
C.
Design Storm, inches:
1 1
1
1
d.
Basin Depth, feet:
2.67 2.67
2.67
2.67
e.
Bottom Elevation, FMSL:
3.33 4.33
2.83
3.33
f.
Bottom Surface Area, ft2:
1,307 4,356
1,742
3,920
g.
Bypass Overflow Elevation, FMSL: 6.00 7.00
5.50
6.00
h.
Permitted Storage Volume, ft3:
692 2,305
922
2,075
i.
Type of Soil:
Fill Sand
j.
Expected Infiltration Rate, inlhr:
10.0
k.
Receiving Stream/River Basin:
Kitty Hawk Bay 1 Pasquotank
I.
Stream Index Number:
30-19
M.
Classification of Water Body:
"SC"
II. SCHEDULE OF COMPLIANCE
1. The stormwater management system shall be constructed in its entirety and
operational for its intended use prior to the construction of any built -upon surface.
The sand filters must not be allowed to receive stormwater during the
construction phase unless the sand and all the trapped sediment is to be
replaced after the entire site is stabilized. The sediment chamber must also be
cleaned out back to design standards after the site is stabilized.
2. During construction, erosion shall be kept to a minimum and any eroded areas of
the system will be repaired immediately.
3. The permittee shall at all times provide the operation and maintenance
necessary to assure the permitted stormwater system functions at optimum
efficiency. The approved Operation and Maintenance Plans must be followed in
its entirety and maintenance must occur at the scheduled intervals including, but
not limited to:

a. Semiannual scheduled inspections (every 6 months).
b. Sediment removal.
C. Mowing and revegetation of slopes and the vegetated filter.
d. Immediate repair of eroded areas.
e. Maintenance of all slopes in accordance with approved plans and
specifications.
f. Debris removal and unclogging of bypass structure, filter media, flow
spreader, catch basins, piping and vegetated filter.
g. A clear access path to the bypass structure must be available at all times.
4. Records of maintenance activities must be kept and made available upon
request to authorized personnel of the Division. The records will indicate the
date, activity, name of person performing the work and what actions were taken.
5. The facilities shall be constructed as shown on the approved plans. This permit
shall become voidable unless the facilities are constructed in accordance with the
conditions of this permit, the approved plans and specifications, and other
supporting data.
6. Upon completion of construction, prior to issuance of a Certificate of Occupancy,
and prior to operation of this permitted facility, a certification must be received
from an appropriate designer for the system installed certifying that the permitted
facility has been installed in accordance with this permit, the approved plans and
specifications, and other supporting documentation. Any deviations from the
approved plans and specifications must be noted on the Certification. A
modification may be required for those deviations.
7. If the stormwater systems were used as Erosion Control devices, they must be
restored to design condition prior to operation as a stormwater treatment device,
and prior to occupancy of the facility.
8. Access to the stormwater facilities shall be maintained via appropriate
easements at all times.
9. 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 any item shown on the approved plans, including the
stormwater management measures, built -upon area, details, etc.
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, lease or sale of all or part of the project
area. The project area is defined as all property owned by the permittee,
for which Sedimentation and Erosion Control Plan approval or a CAMA
Major permit was sought.
f. Filling in, altering, or piping of any vegetative conveyance shown on the
approved plan.

10. The permittee shall submit final site layout and grading plans for any permitted
future areas shown on the approved plans, prior to construction.
11. A copy of the approved plans and specifications shall be maintained on file by
the Permittee for a minimum of ten years from the date of the completion of
construction.
12. 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.
13. This permit shall be effective from June 14, 2020 until June 13, 2028.
Application for permit renewal shall be submitted 180 days prior to the expiration
date of this permit and must be accompanied by the processing fee.
Ill. GENERAL CONDITIONS
This permit is not transferable except after notice to and approval by the Director.
In the event of a change of ownership, or a name change, the permittee must
submit a formal permit transfer request to the Division, accompanied by a
completed name/ownership change form, 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.
The permittee is responsible for compliance with all permit conditions until such
time as the Division approves the transfer request.
2. Failure to abide by the conditions and limitations contained in this permit may
subject the Permittee to enforcement action by the Division, in accordance with
North Carolina General Statute 143-215.6A to 143-215.6C.
3. The issuance of this permit does not preclude the Permittee from complying with
any and all statutes, rules, regulations, or ordinances, which may be imposed by
other government agencies (local, state, and federal) having 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 permittee grants DEQ Staff permission to enter the property during normal
business hours for the purpose of inspecting all components of the permitted
stormwater management facility.

6. The permit may be modified, revoked -and reissued or terminated for cause. The
filing of a request for a permit modification, revocation and reissuance or
termination does not stay any permit condition..
7. Unless specified elsewhere, permanent seeding requirements for the stormwater
control must follow the guidelines established in the North Carolina Erosion and
Sediment Control Planning and Design Manual.
8. Approved plans and specifications for this project are incorporated by reference
and are enforceable parts of the permit.
9. The permittee shall notify the Division any name, ownership or mailing address
changes within 30 days.
Permit issued this the 1611 day of March 2020.
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
for
Brian Wrenn, Acting Director
Division of Energy, Mineral, and Land Resources
By Authority of the Environmental Management Commission
Stormwater Permit No. SW7050926

UtMLK Wit uNLY
Date Received
Fee Paid
Permit Number
?- Ii- I S-0
os, ov
Sam?0'19-0`fi3-
NC DEQ Division of Energy, Mineral and Land Resources
STATE STORMWATER:
PERMIT RENEWAL APPLICATION FORM
In accordance with 15A NCAC 2H.1045(3), the current permit holder shall renew their high density permit 180 days
prior to its expiration. Renewed permits are valid for a period of 8 years per Session Law 2011-398 (SB 781)
Section 60.(c). This application form is for permit renewals only.
A. PROJECT INFORMATION
1. State Stormwater Permit Number: SW7050926
2. Project name: Kitty Hawk Fire Station
3. Project street address: 859 W Kitty Hawk Rd
City: Kitty Hawk County: Dare ZIP:
27949
4. What, if any, changes have been made to the project as permitted? None
If the project has changed from the original approved plans, please complete SWU-101 for a Major
Modification or Minor Modification Application form available at: https://deg.nc.povlabout/divisionslenerav-
m l n eral-la nd-resourceslenergy-mine ra l-land-ruleslstormwater-program/post-construction.
B. PERMITTEE INFORMATION
If changes to the permlttee or project name have been made, please complete either the Permit Update form
or the Permit Transfer form available at: https:/ldeg.nc.gov/about/divisions/energy-mineral-land-
resourceslenergy-mineral-land-ruleslstormwater-programlpost-construction. State Stormwater Permits do not
automatically transfer with the sale of the property.
1. Current Permit Holder's Company Name/Organization: Town of Kitty Hawk
2. Signing Official's Name: Mr Andy Stewart
3, Signing Official's Title: Town Manag
4. Mailing Address: PO Box 549
City: Kitty Hawk _. State: NC ZIP
27949
5. Street Address: 101 Veterans Memorial Dr
City: Kitty Hawk State: NC ZIP
27949
8. Phone: [phone] Email: Andy Stewart <[e-mail]>
Stormwater Permit Renewal Form Page 1 of 3 May 11, 2018

f
C. SUBMITTAL REQUIREMENTS
Submit the application package to the appropriate DEMLR Regional Office (Coastal, SA Waters) or DEMLR
Central Office (Urbanizing Areas Ph 2, USMP, Non -Coastal HQW/ORK9. Only applications packages that
include all required items listed below will be accepted and reviewed.
Initial each item below to Indicate that the required Information Is provided in the application package:
X 1. A permit application processing fee of $505.00 payable to NCDEQ.
X 2. One original signed hard copy and one electronic copy of this completed form. The signing official
named on this application to represent the current permittee must meal one of the following:
a. Corporation — a principle executive officer of at least the level of vice-president;
b. Limited Liability Company (LLC) — a manager or company official as those terms are defined
in G.S. 57D "North Carolina Limited Liability Company Act;"
c. Public Entity — a principal executive officer, ranking official, or other duly authorized employee;
d. Partnership or limited partnership — the general partner;
e. Sole proprietor; or
f. Letter of authorization signed by one of the signatories noted in a — e above authorizing the
signature of another entity.
NA 3. One hard copy and one electronic copy of recorded documents required by the original permit that have
not yet been received by DEMLR, including: deed restrictions, protective covenants,
condominium/planned community declaration and easements. If the project has been built, include
documentation that the maximum BUA per lot or maximum total BUA has not been exceeded. If
the project has not been built, include a signed agreement that the final recorded deed restrictions
and protective covenants will be submitted at a later date.
X 4. .O&M Agreements, Please select one:
® I have a copy of the current recorded O&M Agreement for all SCMs, and I will continue to
keep this on file with the permit; or
❑ I do not have a copy of the current recorded O&M Agreement for all SCMs and am
requesting a copy be sent to me. I agree to keep this on file with the permit.
X 5. Designer Certifications, Please select one:
❑ A copy of the certification(s) confirming that the project was built in accordance with the
approved plans have been previously provided to the Division; or
® A copy of the certification(s) confirming that the project was built in accordance with the
approved plans are enclosed; or
❑ The project has not yet been built.
X 6. [IF APPLICABLE] If the project has been built, one original hard copy and one electronic copy of a
signed, sealed, and dated letter from a licensed professional stating that the SCMs have been
inspected, and that they have been built and maintained in accordance with the permit.
NA 7. [IF APPLICABLE] When the permittee is a corporation or a limited liability corporation (LLC): Provide
one hard copy and one electronic copy of documentation from the NC Secretary of State, or other
official documentation, which supports the titles and positions held by the persons listed in Section
C.2 per 15A NCAC 2H. 1043(3)(b).
https:/Iwww.sosnc.gov/onllne—services/search/by_ titlel Business Registration
Stormwater Permit Renewal Application Form Page 2 of 3 May 11, 2018

f
D. PER TTEE'S CERTIFICATION L
I, a s, I A �w ctr ! the person legally responsible for the permit, certify that I have
a copy of the Permit and O&M Agreement on site (or I will obtain a copy and it will be kept on site), that I am
responsible for the performance of the maintenance procedures, and the site has been and will be maintained
according to the OEM Agreement and approved plans. I agree to notify DEMLR of any problems with the SCMs
or built -upon area and to submit the proper forms to modify or transfer the permit prior to any changes to the
project, SCMs, or ow hip. All information rovided on this permit renewal application is, to the best of my
knowledge, corre and o lete.
Signature: Date: 2 z O
NOTARIZATION:
a Notary Publlc for the State of
County of T do hereby certify
that` -4Jn 11Y ��l �PJAYj zl� „! personally appeared before me
this the -3 day of 20 *2_0 , and acknowledge the due
execution of the forgoing instrument. Witness my hand and official seal,
(Notary Seal)
Notary Signature:
My commission e>
C
19' AOTAgy C
MY
COMMISSION EXPIRES
'0 PU$UG. c'C
Stormwater Permit Renewal Application Form Page 3 of 3
May 11, 2018

lbe"marle
& ASSOCIATES, LTD.
WVED ViS 1 Z 202D
February 4, 2020
NCDEQ
Div of Energy, Mineral and Land Resources
943 Washington Square Mall
Washington, NC 27889
ATTN: Mr. Roger Thorpe
RE: Kitty Hawk Fire Station, Kitty Hawk, NC
SW 7050926 System Inspection $ Certification
Dear Mr. Thorpe:
Thank you for assisting me and providing the original stormwater permitting documents
for this project. As we discussed, the original engineer of record has passed away and
there are limited records of the construction of this site available. I was able to verify that
all tankage, and gutter routing appeared to be in accordance with the plans. I inspected
each of the three holding tanks and the pump tanks as well as the water reuse system as
originally permitted. I inspected the trench drains and found that they needed to be
cleaned of sediments but other than that, they both appeared to be functioning properly.
I probed for the underground sand filter and inspected the outlet port. I can not
substantiate that they were built exactly as designed but when I probed for the rock bed
area it appeared to be the proper shape. I was able to observe the two underdrains within
the observation 1 outlet piping but I cannot confirm that this sand fitter was constructed
exactly as designed without tearing up the front yard. All three tanks as well as the pump
tank were filled with water to the overflow piping. It appears that the holding tanks are
functioning as designed. The overflow outlet in the pump tank appears to be set
reasonably close to the design conditions as all three holding tanks were completely full.
This condition was anticipated as it appears this was the Intended design. These tanks
did not contain measurable amounts of sediment build up. I could not see or inspect the
discharge piping, or the stainless -steel screen located at the bottom of each tank. I also
cannot confirm the tank volumes, but they are very large and deep and appear to be of
the required volume.
Planning - Surveying - Engineering - Environmental - Construction Management
P.O. Box 3989, 115 W. Saint Clair St., Kill Devil Hills, North Carolina 27948
North Carolina License No. C-7027
Phone: [phone] www.AtbemarleAssociates.com Fax: [phone]

Letter to Roger Thorpe
Kitty Hawk Fire Station, Kitty Hawk, NC
SW 7050926 System Inspection & Certification
February 4, 2020
Page 2 of 2
The built upon areas are consistent with those shown on the site plan and no additional
coverage was observed. Based upon my inspection of this stormwater management
system it appears that it was constructed in substantial compliance with the approved
plans. The system appears to be functioning as designed. The two trench drain / sand
filters need to be cleaned of sediment and the sand portion area will be cleaned and have
some supplemental sand media added to bring them to their original design conditions. I
have discussed this with the Town Public Works Director and the Town is going to
schedule this maintenance to be accomplished soon.
By this letter I certify that to the best of my knowledge, and based upon my recent
inspection, this system appears to have been properly constructed and appears to be
functioning as permitted.
If I can provide any additional information at this time, please do not hesitate to contact
me.
J � t
Sin rely¢ ;�R�b,,�
J in rDr LuciaMl i
Erin ipal Eng�ne��,�N���Q ��
DoLWo�`'�
lnnn•o4
cc: File

ROY COOPER
Covernnr
MICHAEL S. REGAN
Secretary
S. DANIEL SMITH
Director
NORTH CAROLINA
Environmental Quality
December 18, 2019
P C, /,o
Town of Kitty Hawk
Attention: Andy Stewart, Town Manager
P.O. Box 549
Kitty Hawk, NC 27949
Subject: Stormwater Permit No. SW7050926 Renewal
Kitty Hawk Fire Station
High Density Stormwater Project
Dear Mr. Stewart: Dare County
A Division of Energy, Mineral, and Land Resources file review has determined that
Stormwater Permit SW7050926 for a stormwater treatment system consisting of three
sand filters and four underground infiltration trenches serving the Kitty Hawk Fire Station
located at 859 W. Kitty Hawk Road in Kitty Hawk, NC expires on June 13, 2020. 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. Also, it was noted in the file review that a designer's certification that the
project was constructed in accordance with the approved plans as required by the
permit has not been submitted. Please include this with your application. Permit
application forms for renewal can be found on our website at:
littps;//deq.nc.gov/about/division e ey-mineral land-resources/enez-gy-mineral-land-
ruleS,/stormwater-program/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 permitteelowner 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 forms. You can request a copy by e-mailing me at ro>er.thorpeRricderingoy.
Sincerely,
Rogrr K. Thorpe
Environmental Engineer
DE QNorth Carolina Department of Environmental Quality I Division of Energy, Mineral and land Resources
_ Washington Regional Offire 1 943 Washington Square Mail i Washington, North Carolina 27889
.awn\ 252.946.6491

Permit No. Sw r%�-� 7' � % AA oD
(to be provided by DWQ)
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
INFILTRATION BASIN SUPPLEMENT
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, an
infiltration basin supplement for each system, design calculations, soils report and plans and specifications
showing all stormwater conveyances and system details.
1. PROJECT INFORMATION
Project Name: KITTY HAWK FIRE STATION
Contact Person: A.B. Moretz, P.E. Phone Number: 704-739-8309
This worksheet applies to: Basin No.AREA I in Drainage Area 0.04 Ac
(as identified on plans) (from Form SWU-101)
IL DESIGN INFORMATION - Attach supporting calculations/documentation. The soils report must be
based upon an actual field investigation and soil borings. County soil maps are not an acceptable source of soils
information. All elevations shall be in feet mean sea level (finsl).
Soils Report Summary
Soil Type SP
Infiltration Rate 10 in/hr or cf/hr/sf (circle appropriate units)
SHWT Elevation 2.0 fmsl (Seasonal High Water Table elevation)
Basin Design Parameters
Design Storm inch
Design Volume
Drawdown Time
Basin Dimensions
(1. 5 inch event for SA wafers, 1 inch event for others)
152.38 c.f.
0.14 days
Basin Size ft. x ft. = 1306.8 sq. ft. (bottom dimensions)
r9ryr.fRV-M44E.JPE
Basin Volume Provided �0'" c.'f' . Y- ,41 ,
Basin Elevations (COMPUTER AREA) 1. 4� 6113h(o
Bottom Elevation
Storage Elevation
Top Elevation
q
5.33 — 3.33 finsl
8-6 fmsl
8-6 fmsl
Form S W U-103 Rev 3.99
Pagel of 3

Permit No.
III. REQUIRED ITEMS CHECKLIST
(to be provided by DWQ)
The following checklist outlines design requirements per the Stormwater Best Management Practices Manual
(N.C. Department of Environment, Health and Natural Resources, February 1999) and Administrative
Code Section: 15 A NCAC 2H .1008.
Initial in the space provided to indicate that the following design requirements have been met and supporting
documentation is attached. If the applicant has designated an agent in the Stormwater Management Permit
Application Form, the agent may initial below. Attach justification if a requirement has not been met.
Applicants Initials
ABM a. System is located 50 feet from class SA waters and 30 feet from other surface waters.
ABM b. System is located at least 100 feet from water supply wells.
Note 3 c. Bottom of system is at least 2 feet above the seasonal high water table.
ABM d. Bottom of the system is 3 feet above any bedrock or impervious soil horizon.
ABM e. System is not sited on or in fill material or DWQ approval has been obtained.
Note 2 J. System is located in a recorded drainage easement for the purposes of operation and
maintenance and has recorded access easements to the nearest public right-of-way.
ABM g. Drainage area for the device is less than 5 acres.
Note 3 h. Soils have a minimum hydraulic conductivity of 0.52 inches per hour and soils report
is attached.
ABM J. System captures and infiltrates the runoff from the first 1.0 inch of rainfall (1.5 inch
event for areas draining to SA waters ). Design volume and infiltration calculations
attached.
ABM j. System is sized to take into account the runoff at the ultimate built -out potential from
all surfaces draining to the system, including any off -site drainage. Calculations attached.
ABM k. All side slopes stabilized with vegetated cover are no steeper than 3:1 (H:V).
Note 4 1. A pretreatment device such as a catch basin, grease trap, filter strip, grassed swale or
sediment trap is provided.
ABM m. Bottom of the device is covered with a layer of clean sand to an average depth of 4
inches or dense vegetative cover is provided.
Note 5 n. Vegetated filter is provided for overflow and detail is shown on plans (Required
minimum length is 50 feet for SA waters, 30 feet for other waters).
Note 6 o. Flow distribution mechanism within the basin is provided.
ABM p. A benchmark is provided to determine the sediment accumulation in the pretreatment
device.
ABM q. Runoff in excess of the design volume bypasses off-line systems (bypass detail
provided).
ABM J. System is designed to draw down the design storage volume to the proposed bottom
elevation under seasonal high water conditions within five days. A soils report and all
pertinent draw -down calculations are attached.
ABM s. Plans ensure that the installed system will meet design specifications (constructed or
restored) upon initial operation once the project is complete and the entire drainage area
is stabilized.
IV. INFILTRATION BASIN OPERATION AND MAINTENANCE AGREEMENT
1. After every runoff producing rainfall event and at least monthly inspect the infiltration system for erosion,
trash accumulation, vegetative cover, and general condition.
Form SWU-103 Rev 3.99 Page 2 of 3

Permit No.
(to be provided by DWQ)
2. Repair eroded areas immediately, re -seed as necessary to maintain adequate vegetative cover, mow vegetated
cover to maintain a maximum height of six inches, and remove trash as needed.
3. After every runoff producing rainfall event and at least monthly inspect the bypass, inflow and overflow
structures for blockage and deterioration. Remove any blockage and repair the structure to approved design
specifications.
4. Remove accumulated sediment from the pretreatment system and infiltration basin annually or when depth in
the pretreatment unit is reduced to 75% of the original design depth. The system shall be restored to the original
design depth without over -excavating. Over -excavating may cause the required water table separation to be
reduced and may compromise the ability of the system to perform as designed. Removed sediment shall be
disposed of in an appropriate manner and shall not be handled in a manner that will adversely impact water
quality (i.e. stockpiling near a stormwater treatment device or stream, etc.).
A benchmark shall be established in the pretreatment unit. The benchmark will document the
original design depth so that accurate sediment accumulation readings can be taken. The measuring
device used to determine the depth at the benchmark shall be such that it will give an accurate depth reading
and not readily penetrate into accumulated sediments.
When the design depth reads feet in the pretreatment unit, the sediment shall be
removed from both the pretreatment unit and the infiltration basin.
5. If the Division determines that the system is failing, the system will immediately be repaired to original
design specifications. If the system cannot be repaired to perform its design function, other stormwater control
devices as allowed by NCAC 2H ,1000 must be designed, approved and constructed.
acknowledge and agree by my signature below that I am responsible for the performance of the five
maintenance procedures listed above..1 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:
Address: �d�
Phone: , 7—S 2— i
Signature:
G.
dm
]Vote: The legally responsible party should not he a homeowners association unless more than 50% of the lots
have been sold and a resident of the subdivision has been named the president. ��qn ��_'�
I, a Notary Public for the State of jOryn ldWUllol'
County of 0611 , dg, hereby certify that L4 67. VG rr(4
personally appeared before me this N` day of Jtl t1g. , at)C)6 , Ad acknowledge ^the
due execution of the forgoing infiltration basin maintenance requirements.
Witness my hand and official seal,
SEAL
My commission expiresy 0-0-7
Form SWU-103 Rev 3.99
Page 3 of 3

Permit No. S 4 05-0?,4, A %0
(to be provided by DWQ)
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
INFILTRATION BASIN SUPPLEMENT
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, an
infiltration basin supplement for each system, design calculations, soils report and plans and specifications
showing all stormwater conveyances and system details.
I. PROJECT INFORMATION
Project Name: KITTY HAWK FIRE STATION
Contact Person: A.B. Moretz A.E. Phone Number: 704-739-8309
This worksheet applies to: Basin No.AREA 2 in Drainage Area 0.14 Ac
(as identified on plans) (from Form SWU-101)
II. DESIGN INFORMATION - Attach supporting calculations/documentation. The soils report must be
based upon an actual field investigation and soil borings. County soil maps are not an acceptable source of soils
information. All elevations shall be in feet mean sea level (fmsl).
Soils Report Summary
Soil Type SP
Infiltration Rate 10 in/hr or cf/hr/sf (circle appropriate units)
SHWT Elevation 2.0 fmsl (Seasonal High Water Table elevation)
Basin Design Parameters
Design Storm inch 1 (1.5 inch event for SA waters, I inch event for others)
Design Volume 492.40 c.f.
Drawdown Time 0.014 days
Basin Dimensions
Basin Size ft. x ft. = 4356 sq. ft. (bottom dimensions)
MIDIJ? PC
Basin Volume Provided 34 8-' I J 6/ON
Basin Elevations (COMPUTER AREA)
Bottom Elevation
Storage Elevation
5.33 — 4.33 fmsl
8-7 fmsl
Top Elevation 8-7 fmsl
Form SWU-103 Rev 3.99 Page I of 3

Permit No.
III. REQUIRED ITEMS CHECKLIST
(to he provided by DWQ)
The following checklist outlines design, requirements per the Stormwater Best Management Practices Manual
(N.C. Department of Environment, Health and Natural Resources, February 1999) and Administrative
Code Section: 15 A NCAC 2H .1008.
Initial in the space provided to indicate that the following design requirements have been met and supporting
documentation is attached. If the applicant has designated an agent in the Stormwater Management Permit
Application Form, the agent may initial below. Attach justification if a requirement has not been met.
Applicants Initials
ABM a. System is located 50 feet from class SA waters and 30 feet from other surface waters.
ABM b. System is located at least 100 feet from water supply wells.
Note I c. Bottom of system is at least 2 feet above the seasonal high water table.
ABM d. Bottom of the system is 3 feet above any bedrock or impervious soil horizon.
ABM e. System is not sited on or in fill material or DWQ approval has been obtained.
Note 2 f. System is located in a recorded drainage easement for the purposes of operation and
maintenance and has recorded access easements to the nearest public right-of-way.
ABM g. Drainage area for the device is less than 5 acres.
Note 3 h. Soils have a minimum hydraulic conductivity of 0.52 inches per hour and soils report
is attached.
ABM J. System captures and infiltrates the runoff from the first 1.0 inch of rainfall (1.5 inch
event for areas draining to SA waters ). Design volume and infiltration
calculations attached.
ABM j. System is sized to take into account the runoff at the ultimate built -out potential from
all surfaces draining to the system, including any off -site drainage. Calculations
attached.
ABM k. All side slopes stabilized with vegetated cover are no steeper than 3:1 (H:V).
Note 4 1. A pretreatment device such as a catch basin, grease trap, filter strip, grassed swale or
sediment trap is provided.
ABM
m. Bottom of the device is covered with a layer of clean sand to an average depth of 4
inches or dense vegetative cover is provided.
Note 5
n. Vegetated filter is provided for overflow and detail is shown on plans (Required
minimum length is 50 feet for SA waters, 30 feet for other waters).
Note 6
o. Flow distribution mechanism within the basin is provided.
ABM
p. A benchmark is provided to determine the sediment accumulation in the pretreatment
device.
ABM
q. Runoff in excess of the design volume bypasses off-line systems (bypass detail
provided).
ABM
J. System is designed to draw down the design storage volume to the proposed bottom
elevation under seasonal high water conditions within five days. A soils report and all
pertinent draw -down calculations are attached.
ABM
s. Plans ensure that the installed system will meet design specifications (constructed or
restored) upon initial operation once the project is complete and the entire drainage area
is stabilized.
IV. INFILTRATION BASIN OPERATION AND MAINTENANCE AGREEMENT
1. After every runoff producing rainfall event and at least monthly inspect the infiltration system for erosion,
trash accumulation, vegetative cover, and general condition.
Form SWU-103 Rev 3.99 Page 2 of 3

Pert -nit No.
(to be provided by DWQ)
2. Repair eroded areas immediately, re -seed as necessary to maintain adequate vegetative cover, mow vegetated
cover to maintain a maximum height of six inches, and remove trash as needed.
3. After every runoff producing rainfall event and at least monthly inspect the bypass, inflow and overflow
structures for blockage and deterioration. Remove any blockage and repair the structure to approved design
specifications.
4. Remove accumulated sediment from the pretreatment system and infiltration basin annually or when depth in
the pretreatment unit is reduced to 75% of the original design depth. The system shall be restored to the original
design depth without over -excavating. Over -excavating may cause the required water table separation to be
reduced and may compromise the ability of the system to perform as designed. Removed sediment shall be
disposed of in an appropriate manner and shall not be handled in a manner that will adversely impact water
quality (i.e. stockpiling near a stormwater treatment device or stream, etc.).
A benchmark shall be established in the pretreatment unit. The benchmark will document the original design
depth so that accurate sediment accumulation readings can be taken. The measuring device used to determine
the depth at the benchmark shall be such that it will give an accurate depth reading and not readily penetrate into
accumulated sediments.
When the design depth reads feet in the pretreatment unit, the sediment shall be
removed from both the pretreatment unit and the infiltration basin.
5. If the Division determines that the system is failing, the system will immediately be repaired to original
design specifications. If the system cannot be repaired to perform its design function, other stormwater control
devices as allowed by NCAC 2H .1000 must be designed, approved and constructed.
acknowledge and agree by my signature below that I am responsible for the performance of the five
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: ZrG7V' /L-- ZCA�y
Address:
Phone: Date:
Signature:
Note: The legally responsible party should not be a homeowners association unless more than JO% of the lots
have been sold and a resident
of the subdivision has been named the president.
1, a Notary Public for the State of II G..
County of do hereby certify that r^t'
personally appeared before me this day ofttn¢ __ (�, and acknowledge the
due execution of the forgoing infiltration basin maintenance requirements.
Witness my hand and official seal,
SEAT. My commission expires -30-0-7
Form SWU-103 Rev 3.99 Page 3 of 3

Permit No. Sit% % 0.J /oZ
(to be provided by DWQ)
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
INFILTRATION BASIN SUPPLEMENT
This form may be photocopied for use as an original
DWO Stormwater Management Plan Review:
A complete stormwater management plan submittal includes a stormwater management permit application,
an infiltration basin supplement for each system, design calculations, soils report and plans and
specifications showing all stormwater conveyances and system details.
1. PROJECT INFORMATION
Project Name: KITTY HAWK FIRE STATION
Contact Person: A.B. Moretz P.E. Phone Number: 704-739-8309
This worksheet applies to: Basin No.AREA 3 in Drainage Area 0.04Ac
(as identified on plans) (from Form SWU-101)
H. DESIGN INFORMATION - Attach supporting calculations/documentation. The soils report
must be based upon an actual field investigation and soil borings. County soil maps are not an acceptable
source of soils information. All elevations shall be in feet mean sea level (fnisl).
Soils Report Summary
Soil Type
SP
Infiltration Rate
10
in/hr or cf/hr/sf
(circle appropriate units)
SHWT Elevation
2.0
fmsl (Seasonal
High Water Table elevation)
Basin Design Parameters
Design Storm inch
1
(1.5 inch event for SA waters, 1 inch event for others)
Design Volume
159.26
c.f.
Drawdown Time
0.11
days
Basin Dimensions
Basin Size
ft. x
ft. = 1742.40 sq. ft. (bottom dimensions)
Basin Volume Provided
149-707 ��'�'Of. f.1
JIJor�-�
Basin Elevations
(COMPUTER AREA)
3 ?�
�s /f 6 /' /
Bottom Elevation
4.33 — 2.833
fmsl
Storage Elevation
7 — 5.5
fmsl
Top Elevation
7 — 5.5
fmsl
Form SWU- l 03 Rev 3.99
Page] of 3

III. REQUIRED ITEMS CHECKLIST
The following checklist outlines design requirements per the Stormwater Best Management Practices
Manual (N.C. Department of Environment, Health and Natural Resources, February 1999) and
Administrative Code Section: 15 A NCAC 2H .1008.
Initial in the space provided to indicate that the following design requirements have been met and
supporting documentation is attached. If the applicant has designated an agent in the Stormwater
Management Permit Application Form, the agent may initial below. Attach justification if a requirement
has not been met.
Applicants Initials
ABM a. System is located 50 feet from class SA waters and 30 feet from other surface waters.
ABM b. System is located at least 100 feet from water supply wells.
Note I c. Bottom of system is at least 2 feet above the seasonal high water table.
ABM d. Bottom of the system is 3 feet above any bedrock or impervious soil horizon.
ABM e. System is not sited on or in fill material or DWQ approval has been obtained.
Note 2 f. System is located in a recorded drainage easement for the purposes of operation and
maintenance and has recorded access easements to the nearest public right-of-way.
ABM e. Drainage area for the device is less than 5 acres.
Note 3 h. Soils have a minimum hydraulic conductivity of 0.52 inches per hour and soils report
is attached.
ABM i. System captures and infiltrates the runoff from the first 1.0 inch of rainfall (1.5 inch
event for areas draining to SA waters ). Design volume and infiltration calculations
attached.
ABM i. System is sized to take into account the runoff at the ultimate built -out potential from
all surfaces draining to the system, including any off -site drainage. Calculations attached.
ABM k. All side slopes stabilized with vegetated cover are no steeper than 3:1 (H:V).
Note 4 1. A pretreatment device such as a catch basin, grease trap, filter strip, grassed swale or
sediment trap is provided.
ABM m. Bottom of the device is covered with a layer of clean sand to an average depth of 4
inches or dense vegetative cover is provided.
Note 5 n. Vegetated filter is provided for overflow and detail is shown on plans (Required
minimum length is 50 feet for SA waters, 30 feet for other waters).
Note 6 o. Flow distribution mechanism within the basin is provided.
ABM p. A benchmark is provided to determine the sediment accumulation in the pretreatment
device.
ABM q. Runoff in excess of the design volume bypasses off-line systems (bypass detail
provided).
ABM r. System is designed -to draw down the design storage volume to the proposed bottom
elevation under seasonal high water conditions within five days. A soils report and all
pertinent draw -down calculations are attached.
ABM s. Plans ensure that the installed system will meet design specifications (constructed or
restored) upon initial operation once the project is complete and the entire drainage area
is stabilized.
Form SWU-103 Rev 3.99 Page 2 of 3

1V. INFILTRATION BASIN OPERATION AND MAINTENANCE AGREEMENT
1. After every runoff producing rainfall event and at least monthly inspect the infiltration system for
erosion, trash accumulation, vegetative cover, and general condition.
2. Repair eroded areas immediately, re -seed as necessary to maintain adequate vegetative cover, mow
vegetated cover to maintain a maximum height of six inches, and remove trash as needed.
3. After every runoff producing rainfall event and at least monthly inspect the bypass, inflow and overflow
structures for blockage and deterioration. Remove any blockage and repair the structure to approved design
specifications.
4. Remove accumulated sediment from the pretreatment system and infiltration basin annually or when
depth in the pretreatment unit is reduced to 75% of the original design depth. The system shall be restored
to the original design depth without over -excavating. Over -excavating may cause the required water table
separation to be reduced and may compromise the ability of the system to perform as designed. Removed
sediment shall be disposed of in an appropriate manner and shall not be handled in a manner that will
adversely impact water quality (i.e. stockpiling near a stormwater treatment device or stream, etc.).
A benchmark shall be established in the pretreatment unit. The benchmark will document the
original design depth so that accurate sediment accumulation readings can be taken. The
measuring device used to determine the depth at the benchmark shall be such that it will give an
accurate depth reading and not readily penetrate into accumulated sediments.
When the design depth reads feet in the pretreatment unit, the sediment shall be
removed from both the pretreatment unit and the infiltration basin.
5. If the Division determines that the system is failing, the system will immediately be repaired to original
design specifications. If the system cannot be repaired to perform its design function, other stormwater
control devices as allowed by NCAC 2H .1000 must be designed, approved and constructed.
1 acknowledge and agree by my signature below that I am responsible for the performance of the five
maintenance procedures listed above. I agree to notify DWQ of any problems with the system or prior to
any changes to the systemorresponsible party.
Print Name and Title:
Address:
Phone: Date: — a
Signature:
Note: The legally responsible party should not be a homeowners association unless more than 50% of the
lots have been sold and d resident of the subdivision has been named the president.
I, %_4_ a Notary Pub is for the State of 01
County of I , d hereby certify that r 6-.
personally appeared before me this �M day of 7UL(nt ?n W(p, and acknowledge the
due execution of the forgoing infiltration basin maintenance requirements.
Witness my hand and official seal, 0 ,{
SEAL My commission expires
Form SWU-103 Rev 3.99 Page 3 of 3

Permit No. �5_W _7c) 0 a ( M 010
(to be provided by DWQ)
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
INFILTRATION BASIN SUPPLEMENT
This form may be photocopied for use as an original
DWO Stormwater Management Plan Review:
A complete stormwater management plan submittal includes a stormwater management permit application,
an infiltration basin supplement for each system, design calculations, soils report and plans and
specifications showing all stormwater conveyances and system details.
I. PROJECT INFORMATION
Project Name: KITTY HAWK FIRE STATION
Contact Person: A.B. Moretz P.E. Phone Number: 704-739-8309
This worksheet applies to: Basin No.AREA 4 in Drainage Area 0.1 1 Ac
(as identified on plans) (from Form SWU-101)
11. DESIGN INFORMATION - Attach supporting calculations/documentation. The soils report
must be based upon an actual field investigation and soil borings. County soil maps are not an acceptable
source of soils information. All elevations shall be in feet mean sea level (fmsl).
Soils Report Summary
Soil Type
Infiltration Rate
SHWT Elevation
Basin Design Parameters
Design Storm inch
Design Volume
Drawdown Time
Basin Dimensions
SP
10 inlhr or cf/hr/sf (circle appropriate units)
2.0 fms) (Seasonal High Water Table elevation)
1 (1.5 inch event far SA waters, 1 inch event for others)
400.68 C.f.
0.123 days
Basin Size ft. x ft. = 3920.40 sq. ft. (bottom dimensions)
Basin Volume Provided .2243-" 1071.6gf. P R
Basin Elevations (COMPUTER AREA)
Bottom Elevation 6.33 — 3.33 fmsl
Storage Elevation 9-6 fmsl
Top Elevation 9-6 fmsl
Form SWU-103 Rev 3.99 Page 1 of 3

Ill. REQUIRED ITEMS CHECKLIST
The following checklist outlines design requirements per the Stormwater Best Management Practices
Manual (N.C. Department of Environment, Health and Natural Resources, February 1999) and
Administrative Code Section: 15 A NCAC 2H .1008.
Initial in the space provided to indicate that the following design requirements have been met and
supporting documentation is attached. If the applicant has designated an agent in the Stormwater
Management Permit Application Form, the agent may initial below. Attach justification if a requirement
has not been met.
Applicants Initials
ABM a. System is located 50 feet from class SA waters and 30 feet from other surface waters.
ABM b. System is located at least 100 feet from water supply wells.
Note 1 c. Bottom of system is at least 2 feet above the seasonal high water table.
ABM d. Bottom of the system is 3 feet above any bedrock or impervious soil horizon.
ABM e. System is not sited on or in fill material or DWQ approval has been obtained.
Note 2 f. System is located in a recorded drainage easement for the purposes of operation and
maintenance and has recorded access easements to the nearest public right-of-way.
ABM s. Drainage area for the device is less than 5 acres.
Note 3 h. Soils have a minimum hydraulic conductivity of 0.52 inches per hour and soils report
is attached.
ABM i, System captures and infiltrates the runoff from the first 1.0 inch of rainfall (1.5 inch
event for areas draining to SA waters ). Design volume and infiltration calculations
attached.
ABM i. System is sized to take into account the runoff at the ultimate built -out potential from
all surfaces draining to the system, including any off -site drainage. Calculations attached.
ABM k. All side slopes stabilized with vegetated cover are no steeper than 3; l (H:V).
Note 4 1. A pretreatment device such as a catch basin, grease trap, filter strip, grassed Swale or
sediment trap is provided.
ABM m. Bottom of the device is covered with a layer of clean sand to an average depth of 4
inches or dense vegetative cover is provided.
Note 5 n. Vegetated filter is provided for overflow and detail is shown on plans (Required
minimum length is 50 feet for SA waters, 30 feet for other waters).
Note 6 o. Flow distribution mechanism within the basin is provided.
ABM p. A benchmark is provided to determine the sediment accumulation in the pretreatment
device.
ABM q. Runoff in excess of the design volume bypasses off-line systems (bypass detail
provided).
ABM r. System is designed to draw down the design storage volume to the proposed bottom
elevation under seasonal high water conditions within five days. A soils report and all
pertinent draw -down calculations are attached.
ABM s. Plans ensure that the installed system will meet design specifications (constructed or
restored) upon initial operation once the project is complete and the entire drainage area
is stabilized.
Form SWU-103 Rev 3.99 Page 2 of 3

IV. INFILTRATION BASIN OPERATION AND MAINTENANCE AGREEMENT
1. After every runoff producing rainfall event and at least monthly inspect the infiltration system for
erosion, trash accumulation, vegetative cover, and general condition.
2. Repair eroded areas immediately, re -seed as necessary to maintain adequate vegetative cover, mow
vegetated cover to maintain a maximum height of six inches, and remove trash as needed.
3. After every runoff producing rainfall event and at least monthly inspect the bypass, inflow and overflow
structures for blockage and deterioration. Remove any blockage and repair the structure to approved design
specifications.
4. Remove accumulated sediment from the pretreatment system and infiltration basin annually or when
depth in the pretreatment unit is reduced to 75% of the original design depth. The system shall be restored
to the original design depth without over -excavating. Over -excavating may cause the required water table
separation to be reduced and may compromise the ability of the system to perform as designed. Removed
sediment shall be disposed of in an appropriate manner and shall not be handled in a manner that will
adversely impact water quality (i.e. stockpiling near a stormwater treatment device or stream, etc.).
A benchmark shall be established in the pretreatment unit. The benchmark will document the
original design depth so that accurate sediment accumulation readings can be taken. The
measuring device used to determine the depth at the benchmark shall be such that it will give an
accurate depth reading and not readily penetrate into accumulated sediments.
When the design depth reads feet in the pretreatment unit, the sediment shall be
removed from both the pretreatment unit and the infiltration basin.
5. If the Division determines that the system is failing, the system will immediately be repaired to original
design specifications. If the system cannot be repaired to perform its design function, other stormwater
control devices as allowed by NCAC 2H .1000 must be designed, approved and constructed.
I acknowledge and agree by my signature below that I am responsible for the performance of the five
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:/f-T Gi✓ �_���i�� %�i3�Y��
Address:
Phone: Date: — — d
Signature:
Note: The legally responsible party should not be a homeowners association unless more than 50% of the
lots have been sold and a resident4. of the subdivision has been named the president.
I, �t , a Notary Pub 'c for the State of }'U ;�1
County of ` . , dQ hereby certify that r trT• 2 'l
personally appeared before me this day of �l! Yu ni L�b(e, an acknowledge the
due execution of the forgoing infiltration basin maintenance requirements.
Witness my hand and official seal, , (),
SEAL My commission expires431b`0'7
Form SWU=103 Rev 3.99 Page 3 of 3

JUSTIFICATION FOR REQUIREMENTS NOT MET
KITTY HAWK
PN 41-04
10 May AD 2006
NOTE 1 The bottom of the system at the lower elevation is less than 2'0" above the seasonal high
water table. However, the pavement section contains a 12" sand layer for treatment and
the storage volume and surface area exceeds the design requirements allowing the basin
to drain in less than 1 /2 day.
NOTE 2 Systems are located on Fire Station site which is public property owned by the Town of
Kitty Hawk.
NOTE 3 Only one copy of the Soils Report is attached for all infiltration areas. Based upon the
Soils Report, soil classification of SP, the general minimum infiltration rate is 10"/hr for
this area.
NOTE 4 Pretreatment devices are not required. The stormwater treated is the volume of
stormwater generated from the area where the pavement section is located.
NOTE 5 Overflow will sheet flow to adjacent grass areas. Storage is 5 times the rain volume;
therefore the probability of overflow is minimal.
NOTE 6 Flow distribution is even due to the treatment area being the receiving area.

Permit No_ :S—W 7 2� ! A.
(To be provided by DWQ)
State of North Carolina
Department of Enivronment and Natural Resources
Division -of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
SAND FILTER SUPPLEMENT
('This firm created by Quible & !Associates, P.C.)
1. PROJECT INFORMATION
Project Name: KITTY HAWK FIRE STATION
Contact Person: A. 8 . MORETZ Phone Number: 704-739-8309
This Worksheet Applies to: Sand Filter No. 1 in Drainage Area 0.33
(from Form SWU-101)
II. DESIGN INFORMATION - Attach supporting calculations/documentation.
Sand Filter Design Parameters
Drainage Area 0.33 Ac.
Sediment Chamber Area Req'd. 121 .26 sq. ft.
Sediment Chamber Vol. Req'd. 181.90 cT
Sand Filter Area Required 121,26 sq. ft.
Sand Filter Volume Required CT
Sediment Chamber Dimensions
Surface Area Provided 10 ft. x 20 ft. = 200 sq. ft.CX 3J
Depth 4.83 ft.
Volume Provided 966 c ft- (y 3�
Sand Filter Dimensions
Surface Area Provided 10 ft. x 20 ft. = 200 sq. fl.
Depth 11 sft.
Volume Provided 30,-%fs--c ft.
OF Page l of4

Ila. REQUIRED ITEMS CHECKLIST
The following checklist outlines design requirements per the Stormwater Best Management
Practices Manual (N.C. Department of Environment, Health and Natural Resources, February
1999) and Administrative Code Section: 15 A NCAC 2H .1008.
Initial in the space provided to indicate that the following design requirements have been met and
supporting documentation is attached. If the applicant has designated an agent in the Stormwater
Management Permit Application Form, the agent may initial below. Attach justification if
requirement has not been met.
Applicant's Initials
-,Zft7 a. Drainage area for the device is less than 5 acres.
b. System is located 50 feet from class SA waters and 30 feet from other surface
waters.
c. System is located at least 100 feet from water supply wells.
d. System is sized to take into account the runoff at the ultimate build -out
potential from all surfaces draining to the system, including any off -site drainage.
MW e. Vegetated filter is provided for overflow (Required minimum length is 50 feet
for SA waters, 30 feet for other waters).
f. A benchmark is provided to determine the sediment accumulation in the
pretreatment device. O=p
g. Runoff in excess of the design capacity bypasses off-line systems.
h. Sedimentation chamber and sand filter are both at least 18" deep.
i. Sedimentation chamber surface area at least 360 sf/Ac.
j. Sedimentation chamber volume at least 540 cf/Ac.
k. Sand filter surface area at least 360 sf/Ac.
I. Sand filter volume at least 540 cf/Ac.
m. Plans ensure that the installed system will meet design specifications
(constructed or restored) upon initial operation once the project is complete and
the entire drainage area is stabilized.
E'age 2 of 4

IV. SAND FILTER OPERATION AND MAINTENANCE AGREEMENT
After every runoff producing rainfall event and at least monthly inspect the collection
system and sand filter for trash accumulation, silt accumulation, and general condition.
2. Repair eroded areas within drainage area immediately and re -seed as necessary to maintain
adequate vegetative cover.
After every rainfall producing event and at least monthly inspect the bypass, inflow and
overflow structures for blockage and deterioration. Remove any blockage and repair the
structure to approved design specifications.
Remove accumulated sediment from the sedimentation chamber when the depth in the
chamber is reduced to 75% of the original design depth. If sand filter sedimentation
chamber is an earthen chamber, the system shall be restored to original design depth
without over -excavating and re -seeded to establish a consistent vegetative cover in the
bottom of the chamber. Removed sediment shall be disposed of in an appropriate manner
and shall not be handled in a manner that will adversely impact water quality (i.e.
stockpiling near a stormwater treatment device or stream, etc.).
A benchmark shall be established in the sedimentation chamber. The benchmark will
document the original design depth so that accurate sediment accumulation readings can
be taken. The measuring device used to determine the depth at the benchmark shall be
such that it will give an accurate depth reading and not readily penetrate into accumulated
sediments.
When the design depth reads 0. 5 feet in the sedimentation chamber, the sediment
shall be removed from both the pretreatment unit and the infiltration basin.
5. At least once a year the sand filter must be inspected after a storm to determine if the filter
bed is passing runoff as expected. When storms of approximately one inch are no longer
passing through the filter within 24 hours, the top two to three inches of sand (discolored
sand) must be removed and replaced with clean sand. The sand which is removed shall be
de -watered and subsequently iandfilled. Removed sand shall not be handled in a manner
that will adversely impact water quality (i.e. stockpiling near a stormwater treatment
device or stream, etc.).
6. If the Division determines that the system is failing, the system will immediately be
repaired to original design specifications. If the system cannot be repaired to perform its
design function, other stormwater control devices as allowed by NCAC 2H .1000 must be
designed, approved, and constructed.
Page 3 of 4

Permit No. J w %QSOCJ b
(To be provided by DWQ)
State of North Carolina
Department of Enivronment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
SAND FILTER SUPPLEMENT
(This form created by Quible & Associates, P.C.)
I. PROJECT INFORMATION
Project Name: KITTY HAWK FIRE STATION
Contact Person: A . B . MORETZ Phone Number: 704-739-8309
This Worksheet Applies to: Sand Filter No. 2 in Drainage Area 0.143
(From Form SWU-101)
H. DESIGN INFORMATION - Attach supporting calculations/documentation.
Sand Filter Design Parameters
Drainage Area 0.143 Ac.
Sediment Chamber Area Req'd. 51.45 sq. ft.
Sediment Chamber Vol. Req' d. 77.17 c. f.
Sand Filter Area Required 54.45 sq. ft.
Sand Filter Volume Required 77.17 c.f.
Sediment Chamber Dimensions
Surface Area Provided 30 ft. x 2 ft. = 60 sq. ft.
Depth 1.5 ft.
Volume Provided go C ft.
Sand Filter Dimensions
Surface Area Provided 30 ft. x 2 ft. = 60 sq. ft.
Depth 1.5 ft.
Volume Provided _ gp Q-ft.
Page 1 ol'4

I11. REQUIRED ITEMS CHECKLIST
The following checklist outlines design requirements per the Stormwater Best Management
Practices Manual (N.C. Department of Environment, Health and Natural Resources, February
1999) and Administrative Code Section: 15 A NCAC 2H .1008.
Initial in the space provided to indicate that the following design requirements have been met and
supporting documentation is attached. If the applicant has designated an agent in the Stormwater
Management Permit Application Form, the agent may initial below. Attach justification if
requirement has not been met.
Applicant's Initials
a. Drainage area for the device is less than 5 acres.
b. System is located 50 feet from class SA waters and 30 feet from other surface
waters.
c. System is located at least 100 feet from water supply wells.
d. System is sized to take into account the runoff at the ultimate build -out
potential from all surfaces draining to the system, including any off -site drainage.
e. Vegetated filter is provided for overflow (Required minimum length is 50 feet
for SA waters, 30 feet for other waters).
f. A benchmark is provided to determine the sediment accumulation in the
pretreatment device. CFPIF�
g. Runoff in excess of the design capacity bypasses off-line systems.
h. Sedimentation chamber and sand filter are both at least 18" deep.
i. Sedimentation chamber surface area at least 360 sf/Ac.
j. Sedimentation chamber volume at least 540 cf/Ac.
k. Sand filter surface area at least 360 sf/Ac.
1. Sand filter volume at feast 540 cf/Ac.
m. Plans ensure that the installed system will meet design specifications
(constructed or restored) upon initial operation once the project is complete and
the entire drainage area is stabilized.
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TV. SAND FILTER OPERATION AND MAINTENANCE AGREEMENT
l . After every runoff producing rainfall event and at least monthly inspect the collection
system and sand filter for trash accumulation, silt accumulation, and general condition.
2. Repair eroded areas within drainage area immediately and re -seed as necessary to maintain
adequate vegetative cover.
3. After every rainfall producing event and at least monthly inspect the bypass, inflow and
overflow structures for blockage and deterioration. Remove any blockage and repair the
structure to approved design specifications.
4. Remove accumulated sediment from the sedimentation chamber when the depth in the
chamber is reduced to 75% of the original design depth. If sand filter sedimentation
chamber is an earthen chamber, the system shall be restored to original design depth
without over -excavating and re -seeded to establish a consistent vegetative cover in the
bottom of the chamber. Removed sediment shall be disposed of in an appropriate manner
and shall not be handled in a manner that will adversely impact water quality (i.e.
stockpiling near a stormwater treatment device or stream, etc.).
A benchmark shall be established in the sedimentation chamber. The benchmark will
document the original design depth so that accurate sediment accumulation readings can
be taken. The measuring device used to determine the depth at the benchmark shall be
such that it will give an accurate depth reading and not readily penetrate into accumulated
sediments.
When the design depth reads 0. 5 feet in the sedimentation chamber, the sediment
shall be removed from both the pretreatment unit and the infiltration basin.
5. At least once a year the sand filter must be inspected after a storm to determine if the filter
bed is passing runoff as expected. When storms of approximately one inch are no longer
passing through the filter within 24 hours, the top two to three inches of sand (discolored
sand) must be removed and replaced with clean sand. The sand which is removed shall be
de -watered and subsequently landfilled. Removed sand shall not be handled in a manner
that will adversely impact water quality (i.e. stockpiling near a stormwater treatment
device or stream, etc.).
b. If the Division determines that the system is failing, the system will immediately be
repaired to original design specifications. If the system cannot be repaired to perform its
design function, other stormwater control devices as allowed by NCAC 2H .1000 must be
designed, approved, and constructed.
Page 3 of 4

Permit No. 5v
(To be provided by DWQ)
State of North Carolina
Department of Enivronment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
SAND FILTER SUPPLEMENT
(This form created by Quible & A.csm-iatc,%, P.C.)
1. PROJECT INFORMATION
Project Name: KITTY HAWK FIRE STATION
Contact Person: A. B. MORETZ Phone Number: 704-739--830
This Worksheet Applies to: Sand Filter No. 8 in Drainage Area 0.192
(from Form S W U-101)
if. DESIGN INFORMATION - Attach supporting calculations/documentation.
Sand Filter Design Parameters
Drainage Area 0.192 Ac.
Sediment Chamber Area Req'd. 69. 26 sq, fl.
Sediment Chamber Vol. Req'd. 103.88 c.f.
Sand Filter Area Required 69. 26 sq. ft.
Sand Filter Volume Required _ 1 o 3 , 8 g c.f.
Sediment Chamber Dimensions
Surface Area Provided 90 fit. x 0 _ R -1 � � ft� LO sq. ft.
Depth 1.5 ft,
Volume Provided 112.5 ft.
Sand Filter Dimensions
(loll)
Surface Area Provided 90 ft. xO.8333 ft. = 75 _sq. ft.
Depth 1.5 ft.
Volume Provided 112.5 c ft.
Page 1 of 4

I.I.I. REQUIRED ITEMS CHECKLIST
The following checklist outlines design requirements per the Stormwater Best Management
Practices Manual (N.C. Department of Environment, Health and Natural Resources, February
1999) and Administrative Code Section: 15 A NCAC 2H .1008.
Initial in the space provided to indicate that the following design requirements have been met and
supporting documentation is attached. If the applicant has designated an agent in the Stormwater
Management Permit Application Form, the agent may initial below. Attach justification if
requirement has not been met.
Applicant's Initials
a. Drainage area for the device is less than 5 acres.
b. System is located 50 feet from class SA waters and 30 feet from other surface
waters.
C. System is located at least 100 feet from water supply wells.
d. System is sized to take into account the runoff at the ultimate build -out
potential from all surfaces draining to the system, including any off -site drainage.
e. Vegetated filter is provided for overflow (Required minimum length is 50 feet
for SA waters, 30 feet for other waters).
f, A benchmark is provided to determine the sediment accumulation in the
pretreatment device. FF45-
g. Runoff in excess of the design capacity bypasses off line systems.
h. Sedimentation chamber and sand filter are both at least 18" deep.
i. Sedimentation chamber surface area at least 360 sf/Ac.
j. Sedimentation chamber volume at least 540 cf/Ac.
k. Sand filter surface area at least 360 sf/Ac.
1. Sand filter volume at least 540 cf/Ac.
m. Plans ensure that the installed system will meet design specifications
(constructed or restored) upon initial operation once the project is complete and
the entire drainage area is stabilized.
Page 2 of 4

IV. SAND FILTER OPERATION AND MAINTENANCE AGREEMENT
1. After every runoff producing rainfall event and at least monthly inspect the collection
system and sand filter for trash accumulation, silt accumulation, and general condition.
2. Repair eroded areas within drainage area immediately and re -seed as necessary to maintain
adequate vegetative cover.
3. After every rainfall producing event and at least monthly inspect the bypass, inflow and
overflow structures for blockage and deterioration. Remove any blockage and repair the
structure to approved design specifications.
4. Remove accumulated sediment from the sedimentation chamber when the depth in the
chamber is reduced to 75% of the original design depth. If sand filter sedimentation
chamber is an earthen chamber, the system shall be restored to original design depth
without over -excavating and re -seeded to establish a consistent vegetative cover in the
bottom of the chamber. Removed sediment shall be disposed of in an appropriate manner
and shall not be handled in a manner that will adversely impact water quality (i.e.
stockpiling near a stormwater treatment device or stream, etc.).
A benchmark shall be established in the sedimentation chamber. The benchmark will
document the original design depth so that accurate sediment accumulation readings can
be taken. The measuring device used to determine the depth at the benchmark shall be
such that it will give an accurate depth reading and not readily penetrate into accumulated
sediments.
When the design depth reads 0. 5 feet in the sedimentation chamber, the sediment
shall be removed from both the pretreatment unit and the infiltration basin.
5. At least once a year the sand filter must be inspected after a storm to determine if the filter
bed is passing runoff as expected. When storms of approximately one inch are no longer
passing through the filter within 24 hours, the top two to three inches of sand (discolored
sand) must be removed and replaced with clean sand. The sand which is removed shall be
de -watered and subsequently landfilled. Removed sand shall not be handled in a manner
that will adversely impact water quality (i.e. stockpiling near a stormwater treatment
device or stream, etc.).
b. if the Division determines that the system is failing, the system will immediately be
repaired to original design specifications. If the system cannot be repaired to perform its
design function, other stormwater control devices as allowed by NCAC 2H .1000 must be
designed, approved, and constructed.
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RECEIVED
OCT 1 12005
I acknowledge and agree by my signature below that I am responsible for the perfort WWARO
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: -B - C::Pary Mc4�ee- , VancLigcr
Address: 'P-0- 'Box -TL-5
Phone: Z Sz - I - 3 -TS2.
Signature:
Date: 10-16- 05
-HEP -e Meo i-&) , a Notary Public for the State ol� QnR-T E (�ot-+�JP4
County of �SQ� , do hereby certify that
Q. C-Ao- personally appeared before me this 10 day of
.2D0 , and acknowledge the due execution of the foregoing infiltration
basin maintenance requirements.
Witness my hand and official seal,
My commission expires ;�607
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