SW7030110_CURRENT PERMIT_20030219

STORMWATER. DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SW��jQG�Q _
DOC TYPE
CURRENT PERMIT
❑ APPROVED PLANS
❑ HISTORICAL FILE
DOC DATE
&Z252�/9
YYYYMMDD

�OF V4ATE�O Michael F. Easley, Governor
O G William G. Ross Jr., Secretary
Cq North Carolina Department of Environment and Natural Resources
-i Alan W. Klimek, P.E., Director
p Division of Water Quality
DIVISION OF WAFER QUALITY
February 19, 2003
Mr. John W. Dixon
Slash Creek, LLC
P.O. Box 1327
Nags Head, NC 27959
--- - - -----...--- - -- ------- - - -
--_ .
Slash Condominiums -
High Density Stormwater Project
Dare County
Dear Mr. Dixon:
The Washington Regional Office received the completed
Stormwater Application for the subject project on January 13, 2003.
Staff review of the plans and specifications has determined that
the project, as proposed, will comply with the Stormwater
Regulations set forth in Title 15A NCAC 2H.1000. We are forwarding
Permit No. SW7030110 dated February 19, 2003 to Slash Creek, LLC
for grassed swales and four infiltration basins to serve Slash
Condominiums located in Hatteras, NC.
This permit shall be effective from the date of issuance until
February 19, 2013 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, P.O. Drawer 27447, Raleigh, NC 27611-7447.
Unless such demands are made this permit shall be final and
binding.
943 Washington Square Mail Washington, N.C. 27889 Telephone [phone] FAX [phone]

John Dixon
February 19, 2003
Page Two
If you have any questions, or need additional information
...'.. .��. �.__.-�... ... .,., . �. .. .�1—_� �-,�,-,_---i-1V ... .. ..._.. .__.-- .., .,
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946-6481, extension 214.
Sincerely,
--_...._._..._.d-Aim-Iviull:gan-......_ _
Water Quality Regional Supervisor
Washington Regional. Office
cc: Quible & Associates
Doug Huggett
Dare County Inspections
WaRO Stormwater Files
Central Files

State Stormwater Management Systems
Permit No. SW70301.10
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
Slash Creek, LLC
Dare 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 grassed
swales and four infiltration basins to serve Slash Condominiums
located in Hatteras, NC.
This permit shall be effective from the date of issuance until
February 19, 2013 and shall be subject to the following specified
conditions and limitations:
I. DESIGN STANDARDS
1. This permit is effective only with respect to the nature and
volume of stormwater described in the application and other
supporting data.
2. This stormwater system has been approved for the management of
stormwater runoff as described on page 2 of this permit, the
Project Data Sheet.
3. 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: Slash Condominiums
Permit Number: SW7030110
Location: Dare County
Applicant: Slash Creek, LLC
Mailing Address: P.O. Box 1327
Nags head, NC 27959
Application Date:
___. i+CdLC� �Vdy-R.eCei V liag--,J Lt_lillll^iGl L'C1
Runoff:
Classification of Water Body:
Total Site Area:
Total Impervious
Surfaces Allowed:
Basin Depth:
Required Storage Volume:
Provided Storage Volume:
overflow elevation
1/13/2003
UT to Pamlico Sound
SA
5.77 acres
2.21 acres proposed
1.0 feet
11,613 cf
12,213 cf
5.0 feet

4. 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.
S. The following items will require a modification to the permit:
a. Any revision to the approved plans, regardless -of size
,j\.4r-,c y 4
iVJ. 4. 11 Wad\.., .. \.r+il:�+i,
C. Transfer of ownership
d. Redesign or addition to the approved amount of built -
upon area
e. F`urther subdivision of the project area.
In addition, the Director may determine that other revisions
to the project should require a modification to the permit.
T'. 1. �-
� :....._.._ .....The--DlieC� o r«ay--noti _Ly - the_ --permit tee- ; heri�. tlieu perTi t ed s-it�
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.
II. SCHEDULE OF COMPLIANCE
1. 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. Semi-annual 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.
...._.,.,_.RccordS f.,_m�,i_ri�,carance__.,activitinny, =IZci.__ 1 0...,,,..�o�f..,,," nnA. maAo..
i• i�t-VVi-\..0 "V'i s..0 yia �.. �.. a.��.aav a.. •..v �.. ....� ... v..0 �. w�. - �_--�—
available upon request to authorized personnel rof 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.
7. 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,
rc,vcc 7,o . and_r a--r,._,i_term1„T1'nt 7ter.. ...Anne .n5 i-, _ctn.1.. .Z"%7.,
permit condition.
Permit issued this the 19 th day of February, 2003.
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
Alan-'W. Klimek, -P.E., Director
Division of Water Quality
By Authority of the Environmental Management Commission
Permit Number SW703011.0

Slash Creek, LLC
Slash Condominiums
Stormwater Permit No. SW7030110
Designer's Certification
1, 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)
(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

i
I.
Date Received Fee Paid Permit Number
[.-10 -o?. Zp, Dp w 7o3a 1 to
Stale of North Carolina
Department of Environment and Natural Resources
Division of Water Quality.
STORMWATER MANAGEMENT PERMIT APPLICATION FO
This form may be photocopied for use as an original
GENERAL INFORMATION
JUN 1 002
1� ..
ECEWED
JAN 1 3 2003
1. Applicants name.(specif . the name of the corporation, individual, etc. who owns the project): v V Q-WAR Q
Slash Creek, LLC
2_' Print Owner/Signing Official's name and title (person legaUy responsible for facility and compliance):
Mr. John W. Dixon
3. Mailing Address for person listed in item 2 above:
PO Box 1327
City: Nags Head' - _ State: NC Zip: 27959
Telephone Number: 252 4 41- 2110
4. Project Name' (subdivision; facility, or establishment name -should be consistent with project name on
plans, specifications, letters, operation and maintenance agreements, etc:):
Slash Condominiums
5. Location of Project (street address):
Northeast (soundside) of NC 12, Northeast of -intersection of NC 12 & SR 1241.
City. Hatteras County: Dare County
6. Directions to project (from nearest major intersection):
Tn t e Vi11age.of Hatteras. Dare County. approx., 7.7,faet northeast of the
intersection of NC 12 &,Eagle Pass Rd.(SR_1241) .
7. Latitude: 35 ° 13' 02" Longitude: 75 °41' 14" of project
8. Contact person who can answer questions about the project:
Name: Telephone Number. { 252 _) 441 -2 i l o
II. PERMIT INFORMATION:
1. Specify whether project is (check one): XX New Renewal Modification
Form SWU-101 Version 3.99 Page 1 of

�r
2. If this application is being submitted as the result of a renewal or modification to -an existing permit, list the
existing permit numberand its issue date (if known)
3. Specify the type of project (check one):
Low Density XX 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.
Stormwater runoff is being routed via site grading & storm piping to a series of
interconnected infiltration basins located below structures. Providing storage of
runoff equivalent to a 1— " rainfall event over the drainage area.
2. Stormwater runoff from this project drains to the Pas uo tank River basin.
3. Total Project Area: 5.77 acres 4. Project Built Upon Area: 39.29 %
5. How many, drainage areas does the project have? 1
6. Complete', the following information for.each drainage area, If there rare more than- two drainage areas in the
project, attach an additional sheet with the; information, for each afea provided'in the same format as below.
.sx=
�asu� irEforma�ion i��'-��
9k;T.atc#aaC<a4 .'at`.4'3ot^xW,R:'+'de. E.. .�. 9.x. -
as i0s a',¢'i><Ahx w.. a:'><.a:«a F4;
n a. a w
Area1,� �
..d., o'$.<s>. ^a+ttsx . i�PxcO'1mA' Mwex
3 <rx xy
�ralrl3ppe �` ""
x.:x> .w.•,eAk xA6Ak vWrm'w.C'o!( ti ;re »`
"�, Area>2� g x�'<h
Receiving Stream Name
Pamlico Sound
Receiving Stream Class
SA
Drainage Area`
.120,678 SF
Existing Impervious* Area
0
Proposed Im ervious"Area
96,266 S F
% Impervious* Area (total)
79,77 %
'.'i'i"h{`I'k.'.,iAS.t4r(Yk',��[4��7+�::^<u,.'3CYrii`La. �Gi.4VA.'e+Y"!�r!t+hy✓'>�.P�'2 '�S'^�. i?,:>` Fh`�4
etY
�y
NCr
KID: 'r
s3gQ">',fv�, \
On -site Buildings
26,444 SF
On -site Streets
ITS, 281 s�
On -site Parking
26,686 SF
On -site Sidewalks
4,919 SF
Other on -site
4,936 SF
Off -site
Total: 96; 2666SF
Total:
* Impervious area is defined as the built upon area including, but not limited to, buildings, roads, parking areas,
sidewalks, gravel areas, etc.
Form SWU-101 Version 3.99
Page 2 of 4

7. How Was the off -site impervious area listed above derived? AutOCAD R14
IV. DEED RESTRICTIONS AND PROTECTIVE COVENANTS
The following italicized deed restrictions and protective covenants are required to be recorded for all
subdivisions, outparcels and future development prior to the sale of any lot If lot sizes vary significantly, a
table listing each lot number, size and the allowable' built�upon area for each lot must be provided as an
attachment.
1. The following covenants are intended to ensure ongoing compliance with.state stormwater management permit
number 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 pr similar material but do not include wood
decking or the water surface of swimming pools.
3. Swales shall not be filled in, piped, or altered except as necessary to provide driveway crossings..
4. Built -upon area in excess of the permitted amount requires a state stormwater management permit modification prior to
construction.
5. All permitted runoff from outparcels or future development shall be directed into the permitted stormwater control
system. These connections to the stormwater control system shall -be performed in a'mdnner 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 omallpartievand
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
1~orm SWU-101 Version 3.99 Page 3 of 4

VI. SUBMITTAL REQUIREMENTS r
Only complete application packages will be accepted and reviewed by the Division of Water Quality (DWQ).
A complete package includes all of the items listed below. The complete application package should be
submitted to the appropriate DWQ Regional Office.
Please indicate that you have provided the following required information by initialing in the space
provided next to each item.
Initials
• Original and one copy of the Stormwater Management Permit Application Form 'tkw s
• One copy of the applicable Supplement Form(s) for each BMP *nw
• Permit application processing fee of $420 (payable to NCDENR) my) s
• Detailed narrative description of stormwater treatment/management �ws
• Two copies of plans and specifications, including: Mw s
= Development/Project name
-Engineer and firm
- Legend
- North arrow
- Scale
Revision number & date
- Mean high water line
- Dimensioned property/project boundary
- Location map with named streets or NCSR numbers
- Original contours, proposed contours, spot elevations, finished floor elevations
- Details of roads,'drainage features, collection systems, and stormwater control measures
- Wetlands delineated, or a note on plans that none exist
- Existing drainage (including off -site), drainage easements, pipe sizes, runoff calculations
- Drainage areas delineated
- Vegetated�buffers (where required)
VII. AGENT AUTHORIZATION
If you wish to designate authority to another individual or firm so; that they may provide information on your
behalf, please complete this section:
Designated agent (individual or firm): Quible & Associates, P.C.
Mailing Address: PO Drawer 870
City:
Kitty Hawk
�^ State:
NC
7p; 27949
Phone:
2'52 261-3300
Fax; {
252
} 261-1260
VIII. APPLICANT'S CERTIFICATION
I, (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 co in conformance with the approved plans, that the required deed restrictions
and protective coven will b ecorded, and that the propos project complies with the requirements of 15A
NCAC 2H .1000. ,
Signature: Date:
r�C
Form SWU-101 Version 3.99 Page 4 of 4

IV. INFILTRATION BASIN OPERATION AND MAINTENANCE AGREEMENT
l . 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: Mr. John W. Dixon, Partner
Address: PO Box 1327, Nags Head, NC 27959
Date:
Signature:
Nate: The legally res o,as tble party should not be a homeowners asciation unless more than 50% of the lots have been sold and
/� a resident of the subdivision has been named the president.
I, 0,0-b t 1 fVA- M. MA"I(K_ , a Notary Public for the State of t v i— , County of
do hereby certify that J 0 b r) �,(� �C0 Y } personally appeared before me this _
day of _j 14-h � �� n P—a00<�- and acknowledge the due execution of the forgoing infiltration basin 'ntenance
requirements. Witness my hand and official seat, � L
"UF ==ICIAL SEAL"
'-z � 1 Notar)� Fti County
North Carolina
SEAL c of Currituck My commission expires
Christina M. Mank
M' Commission & Tres tlt8MWA
Form SWU-103 Rev 3.99 Page 3 of 3

Permit No.
(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 Mana ement.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 : Slash Condominiums
Contact Person: Mr. John W. Dixon Phone Number: ( 252 ) 441-2110
This worksheet applies to: Basin No. All 4 Basins
(as identified on plans)
in Drainage Area 1
(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
Infiltration Rate
SHWT Elevation
Basin Design Parameters
Design Storm
Design Volume
Drawdown Time
Basin Dimensions
Basin Size
Basin Volume Provided
Basin Elevations
Bottom Elevation
Storage Elevation
Top Elevation
Carteret Sand
M
+3-1
in/hr or cf/hr/sf (circle appropriate units)
fmsl (Seasonal High Water Table elevation)
1.5 inch (1.5 inch event for SA waters, 1 inch event for others)
10,591 c.f.
2 days
varies* ft. x varies* ft. = varies* sq. ft. (bottom dimensions)
See attached calculations for basin area
20,D74 C.f. tabulations
4-0 fmsl
- 5.0 fmsl
5.5 fmsl
Form SWU-t03 Rev 3.99 Pane t 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
M� 5 a.
System is located 50 feet from class SA waters and 30 feet from other surface waters.
b.
System is located at least 100 feet from water supply wells.
Mw 3 c.
Bottom of system is at least 2 feet -above the seasonal high water table.
d.
Bottom of the system is 3 feet above any bedrock or impervious soil horizon.
Mw s e.
System is not sited on or in fill material or DWQ approval has been obtained.
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.
g.
Drainage area for the device is less than 5 acres.
►�.,,zS h.
Soils have a minimum hydraulic conductivity of 0.52 inches per hour and soils -report -is
attached.
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.
5 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.
5 k.
All side slopes stabilized with vegetated cover are no steeper than 3:1 (H: V).
'mw' 1.
A pretreatment device such as a catch basin, grease trap, filter strip, grassed swale or
sediment trap is provided.
5 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.
rAIws 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).
mv- 5 o.
Flow distribution mechanism within the basin is provided.
p.
A benchmark is provided to determine the sediment accumulation in the pretreatment
device. N
q.
Runoff in excess of the design volume bypasses off-line systems (bypass detail provided).
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.
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-143 Rev 3.99 Page 2 of 3

ECEWED
Stormwater Management Plan Narrative
Slash Condominiums - Hatteras JAN 1 3 2003
June 6, 2002
General DWQ-WARO
The following narrative will detail the proposed stormwater management plan for proposed uplands construction of
multifamily housing and associated amenities.
Slash Condominiums is located on the east side (soundside) of NC 12, immediately northeast of the intersection of
NC 12 and SR 1241 in Hatteras Village. As per state regulations, a high density permit is being pursued. The
proposed uplands development will consist of the construction of five multifamily housing units with associated
amenities and utilities on a 5.77 acre parcel of land. Slash Condominiums is situated on 5.77 acres (4.81 acres of
uplands) and is bounded to the cast by Slash Canal and undeveloped property, to the west by NC 12, to the north by
undeveloped residential property, and south by Norfolk Carolina Telephone & Telegraph. The proposed
stormwater management method will consist of four interconnected infiltration basins located under the pile -
supported multifamily housing structures with enough storage capacity to hold the runoff generated by a 2.8 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 state regulations.
Summary of Existing Conditions
The Slash Condominiums site is located on the east side of NC 12, immediately northeast of the intersection of
NC12 and SR 1241 in Hatteras Village. The property is currently vacant and undeveloped. There are no
discernable existing stormwater controls and stormwater runoff is currently allowed to infiltrate on the property as
well as discharge into the adjacent canal.
Summary of Proposed Conditions
Slash Condominiums is proposed to consist of the construction of five multifamily dwelling structures with
associated amenities and utilities. Parking is provided on -site via gravel parking spaces and asphalt paved travel
aisles. The total proposed impervious area totals 65,201 square feet, gravel area totals 26,686 square feet, and
landscaped area totals 28,370 square feet within the drainage area. Stormwater management measures arc
proposed with this project to address stormwater runoff throughout the construction area. Stormwater will be
collected in an interconnected storm sewer system and infiltrated in a series of infiltration basins located
underneath four of the dwelling structures providing stormwater storage and infiltration of up to a 2.8 inch rainfall
event.
Stormwater Collection, Treatment, Storage and Disposal
Collection
The stormwater runoff will be collected and directed via site grading, curb and gutter, roof drain collection, and
storm sewer to discharge to the infiltration basins. The infiltration basins will be interconnected via the storm
sewer system to allow equalization during basin filling. Throughout most of the development, runoff from paved
areas will be directed by curb and gutter to drop inlets that will discharge into the infiltration basins. Runoff from
the rooftops will be collected in building gutter systems and piped directly to inlet structures.

Treatment
This system will offer several methods of stormwater runoff treatment prior to release. The majority of runoff from
paved areas will enter the infiltration basins via storm sewer. Gravel parking areas will allow for minimal
infiltration prior to collection in the storm sewer inlets with remaining flows directed to inlets. Initial screening of
debris will occur at the inlet grates prior to stormwater entering the storm sewer system. Riprap aprons located
where storm drain pipes discharge into the infiltration basins will provide additional screening and filtration.
Large particulates which end up in the storm drains will accumulate at this point.
The infiltration basin provides the primary method of pollutant removal. Runoff will undergo filtration of fine
particulates and pollutants through percolation through the two feet sand layer underlying the basins. In addition
to filtration, the underlying sand will provide a media for the establishment of microbes which provide additional
nutrient uptake. 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, In the event that the
weather yields precipitation that exceeds the storage capability of the basin system then additional runoff will be
directed to grassed infiltration/discharge swales on the north and south periphery of the site.
Storage
This infiltration basin system will offer a portion of storage above the ground surface and a portion of storage
within the void spaces available in the subsurface. The infiltration basins will offer storage in excess of the first I-
1/2 inch of runoff. The first 1-1/2 inch of runoff generated by all surfaces, pervious and impervious within the
basin drainage areas will require approximately 10,861 ft' of storage. The storage available above the ground
surface is 12,213 W (a volume in excess of the total required volume). Additional storage is available within the
subsurface in the two (2) feet of separation 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. This subsurface
storage will provide for an additional 5,993 ft' of storage. In addition, the stormwater piping system provides
2,047 ft' of storage. The addition of the above ground storage, the subsurface storage, and piping storage yields a
total of 20,253 ft'. The provided volume of 20,253 ft'is greater than the 10,861 ft' referenced above, indicating
complete storage of a 1.5 inch storm. A more detailed discussion of how this subsurface storage volume value was
determined can be found within the soils section of this narrative.
The placement of the infiltration basins underneath the dwelling structures should be noted.
Disposal
As discussed in previous sections the majority of stormwater runoff entering this management system will be
infiltrated, therefore infiltration will be the primary source of disposal. The system has been designed with
additional storage so that this site will have the capability to handle in excess of a 1.5 inch storm if such a weather
event should occur. At such time that the capacity were to be exceeded the system will then overflow into grassed
infiltration/discharge swales on the north and south periphery of the site.

Soils
Site visits correlate with findings from the United States Department of Agriculture, Soil Conservation Service,
Soil Survey of Dare County, North Carolina, which map the soil for this site as follows:
CeA - Carteret sand, 0 to 2 percent slopes. Permeability is rapid or very rapid.
Infiltration rates typical for Carteret Sand range greater than 6 inches per hour. The minimum infiltration rate
required for this system is 0.52 inches per hour, the soils of this location will greatly exceed that minimum
requirement and will provide for a more adequate stormwater management system. A photocopied soils map with
site location has been included within this narrative.
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
Volume of bulk solid
Table 10.3. Typical Total Porosities.Z
83 �,� ili :� i ✓ i ; ��, {
.Material `C�
TotahPorosrty. (%);
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
Limestone, dolomite
0-20
' David M. Nielson, Editor, Practical Handbook of Ground -Water Monitoring, (Michigan: Lewis Publishers, Inc.,
199 1), pg. 675
z David M. Nielson, Editor, Practical Handbook of Ground -Water Monitorin , (Michigan: Lewis Publishers, Inc.,
1991), pg. 406
'Fletcher G. Driscoll, Ph.D., Principle Author and Editor, Groundwater and Wells, 2nd edition, (Minnesota:
Johnson Filtration Systems Inc., 1986), pgs. 66-67

Table 5.1 Porosities for Common Consolidated and Unconsolidated Materials
Unconsolidated
Sediments'' `.�'_ :�
3:p: ¢ r .I,' i
Tl {%)
-�,r ��',��,,
B t 4i,fll' q : -a¢' - fa x -�, €
, Corisolidaied Rocks k r
,n'�1'�;°' 4�t� ';� ssd��°��
, i, "'• B 'i —
11 (%)
�, vbF�. if �.�sy.
Clay
45-55
Sandstone
5-30
Silt
35-50
Limestone/dolomite
t-20
Sand
25-40
Shale
0-10
Gravel
25-40
Fractured crystalline rock
0-10
Sand & gravel mixes
10-35
Vesicular basalt
10-50
Glacial till
10-35
Dense, solid rock
<l
Based on the information in the preceding 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. The proposed
infiltration basin bottom elevation was designed at an elevation of 4.0 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. The volume was assessed by taking the maximum basin boundary area for each basin and multiplying that
area by 2.0 feet. After taking into account these various factors a volume of subsurface storage will be
approximately 5,993 ft3.
Calculations
A set of sample calculations can be found within appendix portion of this narrative.
Conclusions
The proposed stonnwater management plan for this site will handle in excess of the first 1-1/2 inch of stormwater
runoff generated by all surfaces, pervious and impervious located on this site by incorporating a series of
infiltration basins and the storage available within the subsurface immediately below the basins. 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 greater than 6.0 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.

QUIBLE & ASSOCIATES, P.C.
P.O. Drawer 870
KITTY HAWK, NC 27949
[phone] Fax [phone]
e-mail: [e-mail]
joB TO R:Pjt 11,1ATiEk
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QUIBLE & ASSOCIATES, P.C.
P.O. Drawer 870
KITTY HAWK, NC 27949
[phone] Fax [phone]
e-mail: [e-mail]
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QUIBLE & ASSOCIATES, P.C.
P.O. Drawer 870
KITTY HAWK, NC 27949
[phone] Fax [phone]
e-mail: [e-mail]
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QUIBLE & ASSOCIATES, P.C.
P.O. Drawer 870
KITTY HAWK, NC 27949
[phone] Fax [phone]
e-mail: [e-mail]
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QUIBLE & ASSOCIATES, P.C.
P.O. Drawer 870
KITTY HAWK, NC 27949
[phone] Fax [phone]
e-mail: [e-mail]
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SHEET NO. S_
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CHECKED BY
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QUIRE & ASSOCIATES, P.C.
P.O. Drawer 870
KITTY HAWK, NC 27949
[phone] Fax [phone]
e-mail: [e-mail]
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Quible
Quibie & Associates, P.C. P.O. Drawer 870
1Y Hawk. NC 27949
ENGINEERING • ENVIRONMENTAL SCIENCES • PLANNING Phone: 252-261-M
SINCE 1959
Fax: [phone]
January 9, 2003
Mr. Roger K. "Thorpe, P.E.
NCDL & NR
Division of Water Quality
943 Washington Square Mall
Washington, North Carolina 27889
Re: Re -submission of" Storlrnvater Management Plan
Slash Condominiums
Hatteras Village, Dare Comily, North Carolina
Dear Mr. Moore:
RECEI V E
JAN 1 3 2003
DWQ-WARD
PRINCIPALS
Sean C. Booe. P.E.
Joseph S. Lassttac C.E.P.
Eduardo J. VoWlvieso, P.E.
ASSOCIATES
Joseph J. Maul, P.E.
David S. NoR
On Behalf ol'Slash Creek, LLC, Quible & Associates, P.C, is re -submitting for review and approval a North
Carolina Division Of Water Quality, Stormwater Management Permit Application package for proposed construction
of Slash Condominiums.
The proposed project will consist of the construction of five multi -family dwelling structures with associated
amenities. Slash Condominiums will he situated on 5.77 acres and bounded to the east by Slash Canal, to the west
by NC12, to the north by undeveloped residential property, and to the south by Norfolk Carolina Telephone &
Telegraph. The project falls within the high density classification and the stormwater management plan will consist
of infiltration basins. The proposed stormwater management method will consist of four interconnected infiltration
basins, located underneath pile -supported structures, with enough storage capacity to hold the runoff generated by a
2.8 inch rain everrl. The enclosed narrative will explain in detail the stormwater management of this site.
The following items are included and skull he crrnsidcrcd part nl this suhniival package:
• l- Stornlwater Management Permit Applicalion Form
• 2. Stormwaler Management Plan Narrative
• 3. Application Fee Check in the Amount of $420.00
• 3. Infiltration Basin SupplcrTlcnt
• 4. Calculations and Supporting Data
• 5. Two (2) sets of plans
Also, for your reference, attached to this letter, please find a copy of the North Carolina Division of Coastal
Management Finding of No Significant Impact (lack of this document was the reason for the return of the original
application).
If you have any questions, or require any additional information, please do not hesitate to contact ine at (252)261-
3300.
Sincerely,
uiblc & Associates, P.C.
l
a� Icl A. Decal, P.L.
cnc: is stated
cc: Mr. John W. Dixon, Slash Creak, LI,C

it •ci—ua; 4:;iVF'm - m1y i�i 14j�;Yk i
'vu UVtelviT/ LV,'su uutuu1L vvutnu Pturtt ILJU-JLJ IUV ttiv t,vvi
FINDING OF NO SIGNIFICANT IMPACT
The Slash Condominiums Project
Hatteras Village, Dare County, North Carolina
The following is a Finding of No Significant Impact (FONSI) for the proposed
construction of a 45-unit, multi -family residential condominium project and associated
private, 46-slip marina in Hatteras Village, Dare County. This project proposes no
dredging activities.
This EA/FONSI are prerequisites for the processing of a Coastal Area Management Act
(LAMA) Major permit application by the Division of Coastal Management.
It is concluded that the proposed project will not result in significant impacts to the
environment provided that it can be permitted and subsequently developed consistent
with the State guidelines in the Rules of the Coastal Resources Commission and the
avoidance/mitigation measures contained in the EA. An Environmental Impact
Statement (EIS) will not be prepared for this project.
North Carolina Division of Coastal Management
December 31, 2002
Posneed t-Ito Fax NOW 767i pages
From
Tp J tee. 1..Q55i� co.
ColOept.
Phone ff
Phorte #
Fair # .C5a p'� is l - 0.40
Fey A