SW7070301_CURRENT PERMIT_20070319

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SW 7U% 0 *�
DOC TYPE
CURRENT PERMIT
❑ APPROVED PLANS
❑ HISTORICAL FILE
❑ COMPLIANCE EVALUATION INSPECTION
DOC DATE)���
1
YYYYM M D D
9

F W AT F
�0 90
YWilliam
CI)r
i�CIV"
Michael F. Easley, Governor
G. Ross Jr., Secretary
North Carolina Department of Environment and Natural Resources
p Y
Alan W. Klimek P.E. Director
....."
Division of Water Quality
Mr. Clarence "Bud" Dean, Managing Member
Croatan Surf Club, LLC
808 Swamp Road
Furlong, PA 18925
Subject: Stormwater Permit No. SW7070301
Croatan Surf Club
High Density Project
Dare County
Dear Mr. Dean:
The Washington Regional Office received a complete Stormwater Management Permit
Application for the Croatan Surf Club on March 6, 2007. 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. SW7O70301
dated March 19, 2007, for the construction of the subject project
This permit shall be effective from the date of issuance until March 19, 2017, and shall be
subject to the conditions and limitations as specified therein. Please pay special attention to
the Operation and Maintenance requirements in this permit and in the submitted application.
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.
If you have any questions, or need additional information concerning this matter, please
contact either Samir Dumpor, or me at [phone].
incerely
Al Hodge
Regional Supervisor
Surface Water Protection Section
AH/sav: J:\WPDATA\WQS\Samir - State SW\Permits - Infiltration
cc: Victor White, PE, Landmark Engineering & Environmental, PC
Dare County Building Inspections
Washington Regional Office
Central Files
North Carolina Division of Water Quality Internet: orE_ 1�rOne 1. 1
943 Washington Square Mall Phone [phone]V 0rthCarOlina
Washington, NC 27889 Fax [phone] Naturally
An Equal Opportunity/Affirmative Action Employer- 50% Recycled/10% Post Consumer Paper

State Stormwater Management Systems
Permit No. SW7070301
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
Croatan Surf Club, LLC
Croatan Surf Club
Dare County
FOR THE
construction, operation and maintenance of two 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 pplans and specifications and other supporting data as
attached and on file with and approved by the Division of Water Quality and considered a part
of this permit.
This permit shall be effective from the date of issuance until March 19, 2017, 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.
This stormwater system has been approved for the management of stormwater runoff as
described in Section 1.7-9 on page 3 of this permit. The stormwater controls have been
designed to handle the runoff from 55,284 square feet of impervious area.
The tract will be limited to the amount of built -upon area indicated on page 3 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 area of this project must
be directed into the permitted stormwater control systems.
6. The stormwater treatment systems include 2 underground infiltration trench systems to
treat runoff from drainage areas 1 and 2 .
7. The following design criteria have been provided in the underground infiltration trenches
and must be maintained at design condition:
Page 2 of 7

a.
b.
C.
d.
e.
f.
9-
h.
i.
1•
k.
L
m
Drainage Area, acres:
Total Impervious Surfaces, ft':
Design Storm, inches:
Trench Dimensions, L x W, ft:
(all 3 trenches are 3.5' in Height)
Perforated Pipe Length, ft:
(Stormtech pipes)
Bottom Elevation, FMSL:
Bypass Weir Elevation, FMSL:
Permitted Storage Volume, ft3:
Type of Soil:
Expected Infiltration Rate, in/hr:
State Stormwater Management Systems
Permit No. SW7070301
DA 1
DA 2
1.9T
ng-
39,872
15,412
1.01,
1.01,
A=1122x23)
(72x24)
B=96x18
Height 2.3'
C=14x24j
1,010.5
576.5
SC-740 Chamber
SC-310 Chamber
6.0
5.4
9.5
8.0
11,324
2,710
Newhan Fine Sand
greater than
20 in/hr
Seasonal High Water Table, FMSL:
Receiving Stream/River Basin:
Stream Index Number:
Classification of Water Body:
II. SCHEDULE OF COMPLIANCE
2.9
Atlantic Ocean
99-(7)
"SB"
1. 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 surface.
2. During construction, erosion shall be kept to a minimum and any eroded areas of the
system will be repaired immediately.
3. The permittee shall at all times provide the operation and maintenance necessary to
assure the permitted stormwater system functions at optimum efficiency. The approved
Operation and Maintenance 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 DWQ. The records.will indicate the date, activity, name of
person performing the work and what actions were taken.
Page 3 of 7

State Stormwater Management Systems
Permit No. SW7070301
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. The stormwater systems shall not be used as Erosion Control devices. They must be
kept off line and free from sediment until the project is complete and the entire site has
been stabilized.
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, avid 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 the date of issuance until March 19, 2017,
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.
Page 4 of 7

State Stormwater Management Systems
Permit No. SW7070301
III. 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 of Water Quality, 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.
Failure to abide by the conditions and limitations contained in this permit may subject the
Permittee to enforcement action by the Division of Water Quality, in accordance with
North Carolina General Statute 143-215.6A to 143-215.6C.
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 DENR 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 191h day of March, 2007.
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
I`
I �
for
AI-- \A/ Lw...L oC hi.r..+—
Division of Water Quality
By Authority of the Environmental Management Commission
SW7070301
Page 5 of 7

State Stormwater Management Systems
Permit No. SW7070301
Croatan Surf Club
Stormwater Permit No. SW7070301
Dare County
Designer's Certification
I, , as a duly registered in the
State of North Carolina, having been authorized to observe (periodically/ weekly/ full time) the
construction of the project,
(Project)
for (Project Owner) hereby state that, to the best of
my abilities, due care and diligence was used in the observation of the project construction such
that the construction was observed to be built within substantial compliance and intent of the
approved plans and specifications.
The checklist of items on page 2 of this form is included in the Certification.
Noted deviations from approved plans and specification:
Signature
Registration Number
Date
SEAL
Page 6 of 7

State Stormwater Management Systems
Permit No. SW7070301
Certification Requirements:
1. The drainage area to the system contains approximately the permitted acreage.
2. The drainage area to the system contains no more than the permitted amount of
built -upon area.
3. All the built -upon area associated with the project is graded such that the runoff
drains to the system.
4. All roof drains are located such that the runoff is directed into the system.
5. The bypass structure elevations are per the approved plan.
6. The bypass structure is located per the approved plans.
7. A Trash Rack is provided on the outlet/bypass structure.
8. All slopes are grassed. with permanent vegetation.
9. Vegetated slopes are no steeper than 3:1.
10. The inlets are located per the approved plans and do not cause short-circuiting of
the system.
11. The permitted amounts of surface area and/or volume have been provided.
12. All required design depths are provided.
13. All required parts of the system are provided.
14. The required system dimensions are provided per the approved plans.
cc: NCDENR-DWQ Regional Office
Dare County Building Inspections
Page 7of7

State of North Carolina
Departinent of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
This form may be photocopied for use as art original
I. GENERAL INFORMATION
1. Applicants name (specify the name of the
Cr-,O-)-I-�; �1
individual, etc. who owns the project):
2. Print Owner/Signing Official's name and title (person legally responsible for facility and compliance):
� nA
C—brenc c tr "Bod, it _ Pvn vn �anaq ny *16tr
3. Mailing Address for person listed in item 2 above:
City: -Fu dolux
State: —PA —zip: 129)5
Telephone Nurnbcr: �a.l I )_T9_ Jul. 1
4. Project Name (subdivision, facility, or eslablishmeni name - should be consistent with project name on plans,
specifications, letters, operation and maintenance agreements, etc.):
ChoATAN SURF ("WE
5. Location of Project (street Aaf ld`rless):
C i �• t>
County:
6. Directions to project (from nearest major intersection):
Fromm US �rj/s—� Iurr.
ki
�\ v /v
7. Latitude: —L(0 0--JL Longitude:<Ut W of project
8. Contact person who can answer questions about the project:
Name: U1(1cr Ll—ay Telephone Number:
N
if. PERMIT INFORMATION:
i
1. Specify whether project is (check one): New Renewal Modification
I
Fonn SWU-101 Version 3.99
Page I of 4

State of North Carolina->VJACY— 3/6/0 %
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
This form may be photocopied for use as an original
I. GENERAL INFORMATION
1. Applicants name (specify the natr
MAR 0 6 2007
the corporation, individual, etc. who owns the project): IpI p pO
r?) Sur 0,),) , L,L,C. DWQ-
2. Print Owner/Signing Official's name and title (per�son legally responsible for facility and compliance):
C tl
3. Mailing Address for person listed in item 2 above:
so-� :S saN,p 9.. A
City: FurIonot State: PA Zip: 1291S
Telephone Number:
4. Project Name (subdivision, facility, or establishment name - should be consistent with project name on plans,
specifications, letters, operation and maintenance agreements, etc.):
CRoATAi.) SURF C .g
5. Location of Project (street a dress):
. Q/
, I . O.
`` r ' n i 2
l (ire `trz
City: �� 1 County: 2r'e.
6. Directions to project (from nearest major intersection): ((��
�rowh US 15'g turn &s� ar 64n, J.ki�e.. Aen
C I �1n ,\ AI _ r, r .it - I tn,
// D v rro ty 7. Latitude: � t0 0 Longitude: �J U of project
8. Contact person who can answer questions about the project:
Name: �11(4r LA ; ( Telephone Number: ( )Kl
II. PERMIT INFORMATION:
1. Specify whether project is (check one): New Renewal Modification s
Form SWU-101 Version 3.99 Page 1 of

1 ' 2. If this application is being submitted as the result of a renewal or modification to an existing permit, list the
existing permit number NSA. and its issue date (if known)
3. Specify the type of project (check one)
_Low Density _High Density Redevelop _General Permit Other
4. Additional Project Requirements (check applicable blanks):
X CAMA Major X Sedm tatmn/Erosion Control _404/401 Permit _NPDES Stormwater
i ocl 1�
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. 1 J7 11
S; 2 1� Vf><�l � 1\8 crrv�` /o . " AA , , ,,v e.r t_ i l d K e e.,111 I -A
4 ronp
{red',,
2. Stormwater runoff from this project drains to the
River basin.
3. Total Project Area: a - b9_acres 4. Project Built Upon Area: Sy • 9S %
5. How many drainage areas does the project have?
6. Complete the following information for each drainage area. If there are more than two drainage areas in the
project, attach an additional sheet with the information for each area provided in the same format as below.
Basin Information
Drainage Area I
Drainage Area 2
Receiving Stream Name
H t'A i C Oe'ea,
(Ye 6Ge ze,
Receiving Stream Class
S4 L:1
_ 5g
Drainage Area
1"
OQ
Existing Impervious' Area
O
Proposed Impervious"Area
{iIS1411
% Impervious* Area (total)
(o (polo
(o
Impervious Surface Area
Drainage Area I
Drainage Area 2
On -site Buildings
On -site Streets
On -site Parking
5
On -site Sidewalks
Other on -site
Off -site
Q
Total: �� r
Total: x
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

w
7. How was the ?ff_site impervious area listed above derived? AJ/A
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 or similar material but do not include wood
decking or the water surface of swimming pools.
3. Swales shall not be filled in, piped, or altered except as necessary to provide driveway crossings.
4. Built -upon area in excess of the permitted amount requires a state stormwater management permit modification prior to
construction.
5. All permitted runoff from outparcels or future development shall be directed into the permitted stormwater control
system. These connections to the stormwater control system shall be performed in a manner that maintains the integrity
and performance of the system as permitted.
By your signature below, you certify that the recorded deed restrictions and protective covenants for this project
shall include all the applicable items required above, that the covenants will be binding on all parties and persons
claiming under them, that they will run with the land, that the required covenants cannot be changed or deleted
without concurrence from the State, and that they will be recorded prior to the sale of any lot.
V. SUPPLEMENT FORMS
The applicable state stormwater management permit supplement form(s) listed below must be submitted for each
BMP specified for this project. Contact the Stormwater and General Permits Unit at [phone] for the status
and availability of these forms.
Form SWU-102
Form SWU-103
Form SWU-104
Form SWU-105
i1 Form SWU-106
Form SWU-107
l Form SWU-108
Form SWU-109
Wet Detention Basin Supplement
Infiltration Basin Supplement
Low Density Supplement
Curb Outlet System Supplement
Off -Site System Supplement
Underground Infiltration Trench Supplement
Neuse River Basin Supplement
Innovative Best Management Practice Supplement
Form SWU-101 Version 3.99
Page 3 of 4

f

VI. SUBMITTAL REQUIREMENTS
Only complete application packages will be accepted and reviewed by the Division of Water Quality (DWQ.
A complete package includes all of the items listed below. The complete application package should be
submitted to the appropriate DWQ Regional Office.
1. 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 4W
• One copy of the applicable Supplement Form(s) for each BMP VOL—)
• Permit application processing fee of $420 (payable to NCDENR)
• Detailed narrative description of stormwater treatment/management Ube
• Two copies of plans and specifications, including: U t->
- Development/Project name
- Engineer and firm
-Legend
- North arrow
- Scale
- Revision number & date
- Mean high water line
- Dimensioned property/project boundary
- Location map with named streets or NCSR numbers
- Original contours, proposed contours, spot elevations, finished floor elevations
- Details of roads, drainage features, collection systems, and stormwater control measures
- Wetlands delineated, or a note on plans that none exist
- Existing drainage (including off -site), drainage easements, pipe sizes, runoff calculations
- Drainage areas delineated
- Vegetated buffers (where required)
VII. AGENT AUTHORIZATION
If you wish to designate authority to another individual or firm so that they may provide information on your
behalf, please complete this section.
Designated agent (individual or
Mailing Address:
Iic}nr C✓ 'zkC
City: SovUtP+ h Ste+{S State: Zip: '; -WI y
Phone: ( 2 S1 ) ASS- 5121 Fax: ( 15L ) .155 -09gZ
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 constructed in conformance with the approved plans, that the required deed restrictions
and protective covenants will be recorded, and that the proposed project complies with the requirements of 15A
NCAC 2H .1000. J
Date: 2_1 �7
Form SWU-101 Version 3.99 Page of

v

Permit No.
DWQ Stormwater Management Plan Review:
(to be provided by DWQ)
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM Rzx%uva®
UNDERGROUND INFILTRATION TRENCH SUPPLEMENTMAR 0 6 2007
This form may be photocopied for use as an original
DWQ-WARO
A complete stormwater management plan submittal includes a stormwater management permit application, an
underground infiltration trench supplement for each system, design calculations, and plans and specifications
showing all stormwater conveyances and system details.
I. PROJECT INFORMATION C'
Project Name: `' CROM AK) SURF �.U8
V Contact Person: t C-Tol? E �y {� Phone Number:
For projects with multiple infiltration systems, a supplement form must be completed for each system. This
worksheet applies to: Trenchzs 1-3 in Drainage Area 1
(from plans) (from Form SWU-101)
H. DESIGN INFORMATION (attach supporting calculations/documentation):
Soils Report Summary (based upon an actual field investigation nd soil borings)
Soil Type S� (J2 J�sn �e < 1S
Infiltration Rate crea<Icr -iha. in/hr r cf/hr/sf (circle appropriate units)
SHWT Elevation finsl (Seasonal High Water Table elevation)
Trench Design Parameters
Design Volume Jo c.f. e o
Design Storm inch event (1.5 inch event for SA waters, I inch event for others)
Drawdown Time days
Perforated Pipe Size C i-. m6-�- Z* c inch diameter
Perforated Pipe Length Ao 4kA. ft.
No. Observation Wells 0 (may be required on a case -by -case basis)
Stone Type (if used) 2' au /an�T(ar Cru . A
Stone Void Ratio d 35
Trench Elevations (in feet mean sea level)
Bottom Elevation S . 5 fmsl
Storage/Overflow Elevation Gi . S fins]
Fonn SWU-107 Rev 3.99 Page 1 of 4

Trench Dimensions
Height -�3 ' 5 ft.
Width �a3 (_-JQ fJ Q ay ft.
III. REQUIRED ITEMS CHECKLIST
Length ODIlaP' %ii C dTft.
Volume Provide (a7 a3$ cu.ft.
G i16gT co, F4,
The following checklist outlines design requirements per the Stormwater Best Management Practices manual (N.C.
Department of Environment, Health and Natural Resources, November 1995) 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
Ulrl a.
System is located 50 feet from class SA waters and 30 feet from other surface waters.
V�J b.
System is located at least 100 feet from water supply wells.
y a c.
Bottom of system is at least 2 feet above the seasonal high water table.
UvJ d.
Bottom of the system is 3 feet above any bedrock or impervious soil horizon.
kl vJ e.
Off-line system, runoff in excess of the design volume bypasses the system (bypass detail
provided).
f.
System is designed to draw down the design storage volume to the proposed bottom
elevation under seasonal high water conditions within five days based upon infiltration
through the bottom only (a hydrogeologic evaluation may be required).
V g.
Soils have a minimum hydraulic conductivity of 0.52 inches per hour.
V �1 h.
System is not sited on or in fill material or DWQ approval has been obtained.
VLJ i.
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.
VW 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.
V J k.
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.
k1Vl 1.
System captures and infiltrates the runoff from the first 1.0 inch of rainfall (1.5 inch event
for areas draining to SA waters ).
in.
Drainage area for the device is less than 5 acres.
VVJ n.
A pretreatment device ( filter strip, grassed swale, sediment trap, etc.) is provided.
VLJ o.
Trench bottom is covered with a layer of clean sand to an average depth of 4 inches.
VL-J p. Sides of the infiltration trench are lined with geotextile fabric.
q. Rock used is free of fines (washed stone) and has a large void ratio.
r. Side to bottom area ratio is less than 4:1.
Form SWU-107 Rev 3.99 Page 2 of 4

' NIA s. Observation well(s) are provided (case -by -case basis).
(A t. Vegetated filter is provided for overflow (50 feet for SA waters, 30 feet for other waters)
and detail is shown on plans.
l� u. A benchmark for checking sediment accumulation is provided.
IV. UNDERGROUND INFILTRATION TRENCH OPERATION AND MAINTENANCE AGREEMENT
After every runoff producing rainfall event and at least monthly inspect the bypass/overflow structure for
blockage and deterioration and the infiltration system for erosion, trash accumulation, grass cover, and general
condition.
2. Repair eroded areas immediately, re -seed as necessary to maintain adequate vegetative cover, mow vegetative
cover to maintain a maximum height of six inches, and remove trash and blockages as needed to maintain
system performance.
Remove accumulated sediment annually or when depth is reduced to 75% of the original design depth. Restore
depth to 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.
4. The water level in any monitoring wells will be recorded after a 1 inch rainfall event and at least once a month.
Chronic high water table elevations (within I foot of the bottom of the system for a period of three months)
shall be reported to DWQ immediately.
5. If DWQ determines that the system is failing, the system will immediately be repaired or replaced 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.
6. Remove accumulated sediment from the infiltration system annually or when depth in the 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 infiltration system. 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 depth at the benchmark reads I D15p, the accumulated sediment shall be removed
from the system.
Form SWU-107 Rev 3.99 Page 3 of 4

I acknowledge and agree by my signature below that I am responsible for maintaining the stormwater
collection system in accordance with the six maintenance procedures listed above. I agree to notify DWQ
of any problems with the system or prior to any changes to the system or responsible party.
Print Name and Title: Cb !)WA I vv v. rani-� 5"F ((,I, I L (
Address:
80$ Sk��p
PA
Phone:
tn, b1 GI�I 3tt6`1
Date:
ZIZti__
1
04
Signature:
Note: The legally responsible party should not be a homeowners association unless more than 50% of the lots have been sold and a
resident of the subdivision has been named the president.
ri ,//��
1, \ 'n rn Of Ci CY-t S a Notary Public for the State: of 00-nn g�, ] Ja �, County of
do hereby certify that �` ` 7C 13 LF U&611 personally appeared before me this L
day of (yiric',b 0-007 , and acknowledge the due execution
of the forgoing infiltration basin maintenance
requirements. Witness my hand and official seal,
Commonwealth of Pennsylvania (l r
NOTARIAL SEAL
CAROL A. FARRIS, Notary Public
Doylestown Township, Bucks County
My Commission Expires February 2, 2008
SEAL My commission expires—Lb-0_ _�g
Form SWU-107 Rev 3.99 Page 4 of 4

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
UNDERGROUND INFILTRATION TRENCH SUPPLEMENPAR 0 5 2007
This form may be photocopied for use as an original
DWO Stormwater Management Plan Review:
WN-WAR0
A complete stormwater management plan submittal includes a stormwater management permit application, an
underground infiltration trench supplement for each system, design calculations, and plans and specifications
showing all stormwater conveyances and system details.
I. PROJECT INFORMATION
Project Name: C R--A TA rJ S(JQE C.-() Q
Contact Person: 'jle�(Z C 0 H 1 l�'t CE. Phone Number. (a$Z) Z5 - 5I -�-
For projects with multiple infiltration systems, a supplement form must be completed for each system. This
worksheet applies to: Trench OZ in Drainage Area - C�_
(from plans) (from Form SWU-101)
H. DESIGN INFORMATION (attach supporting calculations/documentation):
Soils Report Summary (based upon an actual field investigation and soil borings)
Soil Type alarm ne S2"�)
Infiltration Rate c r� r 4(C � '20 in/hr or cf/hr/sf (circle appropriate units)
SHWT Elevation 3 , Z fmsl (Seasonal High Water Table elevation)
Trench Design Parameters
Design Volume f0 c.f.
Design Storm inch event (1.5 inch event for SA waters, 1 inch event for others)
Drawdown Time D days
Perforated Pipe Size NIA inch diameter
Perforated Pipe Length MA ft.
No. Observation Wells U (may be required on a case -by -case basis)
Stone Type (if used) (tie -2 /1,.O,1a, rro6w St' —
Stone Void Ratio (), 35
Trench Elevations (in feet mean sea
� level)
Bottom Elevation `-t ,9 fins]
Storage/Overflow Elevation R.0 fmsl
Fonn SWU-107 Rev 3.99 Page 1 of 4

Trench Dimensions r�
Height J�� ft. Length ft.
Width _�� ft. Volume Provided (O cu.ft.
IN. 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, November 1995) and Administrative Code Section: 15
A NCAC 211.1008.
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 I Initials
V V a. System is located 50 feet from class SA waters and 30 feet from other surface waters.
VLJ b. System is located at least 100 feet from water supply wells.
W c. Bottom of system is at least 2 feet above the seasonal high water table.
\W d. Bottom of the system is 3 feet above any bedrock or impervious soil horizon.
tl e. Off-line system, runoff in excess of the design volume bypasses the system (bypass detail
provided).
y� f. System is designed to draw down the design storage volume to the proposed bottom
elevation under seasonal high water conditions within five days based upon infiltration
through the bottom only (a hydrogeologic evaluation may be required).
y W g. Soils have a minimum hydraulic conductivity of 0.52 inches per hour.
Q W h. System is not sited on or in fill material or DWQ approval has been obtained.
y�j i. 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.
yU1 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.
^� k. 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.
1. System captures and infiltrates the runoff from the first 1.0 inch of rainfall (1.5 inch event
for areas draining to SA waters ).
V Li in. Drainage area for the device is less than 5 acres.
VW n. A pretreatment device ( filter strip, grassed swale, sediment trap, etc.) is provided.
\/�J o. Trench bottom is covered with a layer of clean sand to an average depth of 4 inches.
VL-J p. Sides of the infiltration trench are lined with geotextile fabric.
�'/ Vi q. Rock used is free of fines (washed stone) and has a large void ratio.
V / r. Side to bottom area ratio is less than 4:1.
Fonn SWU-107 Rev 3.99 Page 2 of 4

N�<e s. Observation well(s) are provided (case -by -case basis).
t. Vegetated filter is provided for overflow (50 feet for SA waters, 30 feet for other waters)
and detail is shown on plans.
\) o u. A benchmark for checking sediment accumulation is provided.
IV. UNDERGROUND INFILTRATION TRENCH OPERATION AND MAINTENANCE AGREEMENT
After every runoff producing rainfall event and at least monthly inspect the bypass/overflow structure for
blockage and deterioration and the infiltration system for erosion, trash accumulation, grass cover, and general
condition.
2. Repair eroded areas immediately, re -seed as necessary to maintain adequate vegetative cover, mow vegetative
cover to maintain a maximum height of six inches, and remove trash and blockages as needed to maintain
system performance.
3. Remove accumulated sediment annually or when depth is reduced to 75% of the original design depth. Restore
depth to 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.
4. The water level in any monitoring wells will be recorded after a i inch rainfall event and at least once a month.
Chronic high water table elevations (within 1 foot of the bottom of the system for a period of three months)
shall be reported to DWQ immediately.
5. If DWQ determines that the system is failing, the system will immediately be repaired or replaced to original
design specifications. If the system cannot be repaired to perform its design function, other stormwater control
devices as allowed by NCAC 211.1000 must be designed, approved and constructed.
6. Remove accumulated sediment from the infiltration system annually or when depth in the 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 infiltration system. 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 depth at the benchmark reads d , )-S f , the accumulated sediment shall be removed
from the system.
Form SWU-107 Rev 3.99 Page 3 of 4

I acknowledge and agree by my signature below that I am responsible for maintaining the stormwater
collection system in accordance with the six maintenance procedures listed above. I agree to notify DWQ
of any problems with the system or prior to any changes to the system or responsible party.
Print Name and
�1 tAtf. rek,, S«tfcl,,,!tC
All
]Vote: The legally responsible party should not be a homeowners association unless more than 50•16 ojthe lots have been sold and a
resident ojthe subdivision has been named the president.
r
i'-a rr ,. S a Notary Public for the State of .LCountyof
do hereby certify that C `0.t'P.r , (P— Qoacl%personally appeared before me this
day of fyVV ACC V\ a-c30'-j , and acknowledge the due execution of the forgoing infiltration basin maintenance
requirements. Witness my hand and official seal,
Commonwealth or Pennsylvanla
NOTARIAL SEAL
CAROL A. FARRIS, Notary Public
Doylestown Township, Bucks County
My Commission Expires February 2, 2008
SEAL My commission expires e,b o �0g
Form SWU-107 Rev 3.99 Page 4 of 4