SW7060623_CURRENT PERMIT_20061002

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

o�0F w A rk919
o -c
Mr. Robert S. Foreman,
Stanl ford Holdings, Inc.
P4 Box 1614-
Buxton, NC 27920
Dear Mr. Foreman:
Michael F. Easley, Governor
William G. Ross Jr., Secretary
North Carolina Department of Environment and Natural Resources
Alan W. Klimek, P.E. Director
Division of Water Quality
October 2, 2006
III, Managing Member
Subject: Stormwater Permit No. SW7060623
Real Kiteboarding
High Density Project
Dare County
The Washington Regional Office received a complete Stormwater Management Permit
Application for Real Kiteboarding on September 19, 2006. Staff review of the plans and
specifications has determined that the project, as proposed, will comply with the
Stormwater Regulations set forth in Title 15A NCAC 2H.1000. We are forwarding
Permit No. SW7060623 dated October 2, 2006, for the construction of the subject
project.
This permit shall be effective from the date of issuance until October 2, 2016, 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 Scott Vinson, or me at [phone],
ince ely,
Regional Supervisor
Surface Water Protection Section
AHlsav: C:ISTORMWATERIPERMITISW7060623
cc: Clay Massey, PE
Pare County Building Inspections
Washington Regional Office
Central Files
1Vo°r`thcaro
NatuAw
?North Carolina Division of Water Quality Washington Regional Office Phone [phone] FAX [phone] Customer Service
Internet: www_ncwater ualitv,orQ 943 Washington Square Mail;_ Washington, NC 27889 1-877.623.6749
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f=4
State Stormwater Management Systems
Permit No. SW7060507
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
Stanford Holdings, Inc.
Real Kiteboarding
Dare County
FOR THE
construction, operation and maintenance of two infiltration basins and two underground
infiltration..trench 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.
This permit shall be effective from the date of issuance until October 2, 2016, 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. The drainage areas will be
limited to the amount of built -upon area indicated on page 3 of this permit, and per
approved plans.
2. This stormwater system has been approved for the management of stormwater runoff as
described in Section 1.6 and 7 on page 3 of this permit. The stormwater controls have
been designed to handle the runoff from 66,539 square feet of impervious area.
3. 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 and permit.
4. The runoff from all built -upon area within the permitted drainage areas of this project
must be directed into the permitted stormwater control systems.
5. The stormwater treatment systems include two (2) infiltration basins, and two (2)
underground infiltration trench systems to treat runoff from drainage areas A, B & C.
Runoff from drainage area "B" is treated with an underground infiltration trench working
in series with an infiltration basin.
Page 2 of 8

State Stormwater Management Systems
Permit No. SW7060507
6. The following design criteria have been provided in the infiltration basins and must be
maintained
at design copdition:
DA "A" DA "B"
a.
Drainage Area, ft :
24,539 2,4
b.
Total Impervious Surfaces, ft2:
13,944 33,113
C.
Design Storm, inches:
3.00 3.00
d.
Basin Depth, ft.:
0.65 0.70
e.
Bottom elevations, FMSL:
5.50 5.50
If.
Bottom Surface Area, ft2:
5,275 1,042
g.
Bypass Overflow Elevations, FMSL:
6.20 6.20
h.
Permitted Storage Volume, ft3:
3,333 914
i.
Type of Soil:
Newhan Corolla
j.
Expected Infiltration Rate, in/hr:
20 20
k.
Seasonal High Water Table, FMSL:
3.50 3.50
I.
Receiving Stream 1 River Basin:
Pamlico Sound 1 Pasquotank
M.
Stream Index Number:
30-22
n.
Classification of Water Body:
"SA; HQW'
7. The following design criteria have been provided
in the underground infiltration trench
and must be maintaine4at design condition:
DA "B" DA "C"
a.
Drainage Area,
42,493 19�
b.
Total Impervious Surfaces, ft2:
33,113 19,482,
C.
Design Storm, inches:
3.0 3.0
d.
Trench Dimensions', L x W x H, ft:
170 x 30 x 2.33 180 x 192 x 0.67
e.
Perforated Pipe Diameter/Length:
Stormtech 310- / 1,707ft n/a
f.
Bottom Elevation, FMSL:
5.25 5.25
g.
Bypass Weir Elevation, FMSL:
7.33 5.90
h.
Permitted Storage Volume, ft3:
6,960 4,583
i.
Type of Soil:
Newhan Corolla
j.
Expected Infiltration Rate, in/hr:
20 20
k.
Seasonal High Water Table, FMSL:
3.50 3.50
1.
Receiving Stream/River Basin:
Pamlico Sound / Pasquotank
M.
Stream Index Number:
30-22
n.
Classification of Water Body:
"SA; HQW'
Page 3 of 8

q
State Stormwater Management Systems
Permit No, SW7060507
B. For Drainage Area B the stormwater runoff will be captured and treated in a Stormtech
310 piped infiltration trench which will provide 6,960 cubic feet of storage. This trench
system is tied directly, by pipe, into infiltration basin "B" which will provide an additional
914 cf of storage volume. These two systems are to work in series in order to provide
the minimum storage for the 3.0 inch design storm.
9. Stormwater runoff in Drainage Area C is conveyed to the infiltration trench °C° by the use
of porous/permeable pavement. The porous/permeable pavement is required to be
properly constructed, operated -and -maintained in -accordance -with -the approved -plans
and signed Operation and Maintenance Agreement.
II. SCHEDULE OF COMPLIANCE
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.
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.
Page 4 of 8

State Stormwater Management Systems
Permit No. SV 7060507
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 the date of issuance -until October 2, 2016.
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.
14. Prior to transfer of the permit, the stormwater facilities will be inspected by DWQ
personnel. The facility must be in compliance with all permit conditions. Any items not in
compliance must be repaired or replaced to design condition prior to the transfer.
Records of maintenance activities performed to date will be required.
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.
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 143-215.6A 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.
Page 5of8

State Stormwater Management Systems
Permit No. SW7060507
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. 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.
9. The permittee shall notify the Division any name, ownership or mailing address changes
within 30 days.
Permit issued .this the 2Id day of October, 2006.
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
t-. - o< < — for
Nian vv. KiimeK, r.t., Director
Division of Water Quality
By Authority of the Environmental Management Commission
Permit No, SW7060623
Page 6 of 8

Q
State Stormwater Management Systems
Permit No. SW7060507
Real Kiteboarding
Stormwater Permit No. SW7060623
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 7of8

State Stormwater Management Systems
Permit No. SV 7060507
I
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 bui[t-upon area associated with the project is graded such that the runoff
drains to the system.
. 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 8 of 8

STANFORD HOLDINGS, LLC
47170 Highway 12
Buxton, North Carolina
Operation and Maintenance Agreement
For Stormwater Systems
August 9, 2006 AUG P r) 2006
INFILTRATION BASINS
INFILTRATION BASINS: Infiltration basins will be monitored and maintained in accordance
with the NCDENR Stormwater BMP Manual, Section 3.7." Current criteria for long term
monitoring and maintenance include the following:
3.7.10 MONITORING
Sediment accumulation will eventually render an infiltration device ineffective, so
regular inspections are necessary. Because the trenches and dry wells are below ground
and out of sight, the tendency is to ignore inspection and maintenance, which leads to
failure. Regular inspections of all types of infiltration devices will help ensure that
problems are identified in advance.
The monitoring well for observing infiltration devices should consist of a 4- to 6-inch-
diameter,
perforated polyvinyl chloride (PVC) pipe with a locking cap. The well should be placed
near the center of the facility, with the invert at the excavated bottom of the facility. For
the first year of operation, installations should be inspected quarterly and after each major
storm. After the first year, annual inspections, preferably conducted after a storm. are
recommended.
In order to monitor performance of the infiltration device, observations should be
conducted to determine how long it takes retained water to infiltrate into the soil after a
storm event. The determination can be made in two ways. The most informative way is to
read the water level several times over a period of days after a large storm. The
alternative is a "one -stop" method, where a single reading is taken and compared with the
local rainfall record. Although less accurate than the multiple reading method, the one -
stop method will still allow significant deterioration in performance to be recognized.
3.7.11 MAINTENANCE
Maintenance is very important for infiltration devices. Property owners should be
educated in the function and maintenance requirements of infiltration devices. Especially
important is the maintenance of vegetated areas that drain to the infiltration system. Areas
that are allowed to become bare and unvegetated will contribute excess sediment to the
infiltration system and hasten its failure. Maintenance requirements are summarized as
follows:

• Grass areas, grassed swales, and filter strips leading to infiltration devices should
have a dense vegetation cover and be mowed at least twice a year.
• Sediment deposits should be removed from pretreatment devices at least annually.
• In trenches, the top several inches of aggregate and the filter cloth along the top of the
trench or dry welts should be replaced annually or at least when the facility shows
evidence that infiltration rates have declined. Proper disposal of the materials
removed is necessary; the aggregate and cloth should be appropriately packaged and
delivered to the local landfill, if the operating authority approves the disposal.
The surface of infiltration trenches must be kept in good condition. Colonization by
grass or other plants should be discouraged, since this can lead to reduced surface
infiltration rates. In many instances, it is convenient'to cover infiltration trenches with,
concrete grid pavers or similar permeable paving systems that can be removed easily
and replaced as necessary to service the trench.
• The infiltration facility must be dismantled and reconstructed when the infiltration
rate unacceptable levels.
PERMEABLE PAVEMENT (Turf Stone Pavers)
PERMEABLE PAVEMENT (Turf Stone Pavers): The turf stone paver areas will be
maintained in accordance with the "NCDENR Stormwater BMP Manual, Section 3.10." Current
criteria for permeable pavement maintenance includes the following:
3.10.8 MAINTENANCE
Maintenance requirements are critical for the success of permeable pavement. Even
though there are significant locational restrictions on the permeable pavement
installations, there is still a potential for permeable pavements to clog with sediment. The
following installation and maintenance requirements shown in Table 3.10.1 are designed
to ensure that the permeable pavement system will work effectively. A maintenance
agreement is required for each permeable pavement installation to receive credit. The
maintenance agreement should include specific requirements and responsibilities of the
property owner and provide for enforcement.
Stanford Holdings. LLC Operation and k1aintenance Agreement
Buxton. eVorth Carolina For StormwaterSvstems
Page 2

Table 3.10.1 Required maintenance activities for permeable pavement installations
TABLE 3.10-1
Required maintenance activities for permeable pavement installations
Adopted from Atlanta Regional Commission and Georgia Department of Natural Resources, 2001
Activity
• Initial inspection
• Ensure that permeable pavement surface is free of sediment
• Ensure that the contributing and adjacent area is stabilized and
mowed, with clippings removed
• Vacuum sweep permeable pavement surface
• Inspect the surface for deterioration
• Verify that the permeable pavement system dewaters between storms
• Verify that underdrain outlet is free from obstructions (if applicable)
Schedule
Monthly for 3 months
after installation
Monthly
As needed, based on inspection
Annually
Annually
Annually
Annually
STORMTECH SUBSURFACE STORMWATER MANAGEMENT SYSTEM
STORMTECH SUBSURFACE STORMWATER MANAGEMENT SYSTEM: The
stormtech subsurface management system and the settling basin structures will undergo
inspection and maintenance as stipulated by the manufacturer, "StormTech." Manufacturer
recommended criteria for inspection and maintenance includes the following:
13.1 TREATMENT TRAIN INSPECTION AND MAINTENANCE
The StormTech recommended treatment train inlet system has three tiers of treatment
upstream of the StormTech chambers. It is recommended that inspection and
maintenance (I&M) be initiated at the furthest upstream treatment tier and continue
downstream as necessary. The following I&M procedures follow this approach providing
I&M information in the following order: Tier 1 —Pretreatment (BMP);
Tier 2 — StormTech Isolator Row, and; Tier 3 — Eccentric Pipe Header System.
13.2 CATCHBASIN/MANHOLE I&M
Typically a stormwater system will have catchbasins and manholes upstream of the
detentiordretention system. In some cases these may be the only pre-treatment devices.
Regular I&M of catchbasins and manholes should be scheduled and performed as part of
a site's routine maintenance plan.
CATCHBASIN/MANHOLE — STEP-BY-STEP MAINTENANCE PROCEDURES
1) Inspect catch basins and manholes upstream of StormTech chambers for sediment
2) Remove grate or cover
3) Skim off oils and floatables
4) Using a stadia rod, measure the depth of sediment
5) If sediment is at a depth greater than 6" proceed to step 6. If not proceed to step 7.
6) Vacuum or manually remove sediment
7) Replace grate
Stanford Holdings. LLC Operation and Afaintenance.4greenient
Buxton. North Carolina For Stornsvater Systems
Page 3

8) Record depth & date and schedule next inspection
13.3 PRE-TREATMENT DEVICE I&M
Manufacturer's I&M procedures should be followed for proprietary pretreatment devices
such as baffle boxes, swirl concentrators, oil -water separators, and filtration units. Table
10 provides some general guidelines but is not a substitute for a manufacturer's specific
instructions.
TABLE 10 -- Pretreatment Inspection and Maintenance Guidelines
SEDIMENT CONTROL
INSPECTION
INSPECTION
MAINTENANCE*"
StormTech IsolatorTM Row
Bi-Annually
JetVac - Culvert Cleaning
Nozzle Preferred
Sediment Basin
Quarterly or after large storm event
Excavate sediment
Catch Basin Sump
Quarterly
Excavate, pump, or vacuum
Sedimentation Structure
Quarterly
Excavate, pump, or vacuum
Catch Basin Filter Bags
After all storm events
Clean and/or replace filter bags
Porous Pavement
Quarterly
Sweep Pavement
Pipe Header Design
Quarterly
Excavate, pump, or vacuum
Water Quality Inlet
Quarterly
Excavate: pump, or vacuum
Sand Filters
Quarterly or after storm event
Remove & replace sand filter
* This schedule does not account for regional or site variables_ Local municipal guidelines should be
followed for inspection when available.
* * The methods stated are minimum guidelines for removal and cleaning of system. Other methods may
ap p ly.
13.4 ISOLATORTm ROW INSPECTION
Regular inspection and maintenance are essential to assure a properly functioning
stormwater system. Inspection is easily accomplished through the manhole or optional
inspection ports of an Isolator Row. Please follow local and OSHA rules for a confined
space entry.
Inspection ports can allow inspection to be accomplished completely from the surface
without the need for a con -fined space entry. Inspection ports provide visual access to the
system with the use of a flashlight. A stadia rod may be inserted to determine the depth of
sediment. If upon visual inspection it is found that sediment has accumulated to an
average depth exceeding 3" (76 mm), cleanout is required.
Stanford Holdings: LLC Operation and Waintenance Agreement
Biamon, North Carolina For Storm -water Systems
Page 4

A StormTech Isolator Row should initially be inspected immediately after completion of
the site's construction. While every effort should be made to prevent sediment from
entering the system during construction, it is during this time that excess amounts of
sediments are most likely to enter any stormwater system. Inspection and maintenance, if
necessary, should be performed prior to passing responsibility over to the site's owner.
Once in normal service, a StormTech Isolator Row should be inspected bi-annually until
an understanding of the sites characteristics is developed. The site's maintenance
manager can then revise the inspection schedule based on experience or local
requirements.
13.5 ISOLATOR ROW MAINTENANCE
JetVac maintenance is required if sediment has been collected to an average depth of 3"
(76 mm) or more insidethe Isolator Row. The JetVac process utilizes a high pressure
water nozzle to propel itself down the Isolator Row while scouring and suspending
sediments. As the nozzle is retrieved, a wave of suspended sediments is flushed back into
the manhole for vacuuming. Most sewer and pipe maintenance companies have
vacuum/JetVac combination vehicles. Fixed nozzles designed for culverts or large
diameter pipe cleaning are preferable. Rear facing jets with an effective spread of at least
45" (1140 mm.) are best. Most JetVac reels have a mini-mumof 400 feet (122 m) of hose
allowing maintenance of an Isolator Row up to 50 chambers long. The JetVac process
shall only be performed on StormTech Rows that have AASHTO class 1 woven
geotextile over their angular base stone.
STORMTECH ISOLATOR T" ROW - Step -By -Step Maintenance Procedures
Step 1) Inspect Isolator Row for sediment.
A) Inspection ports (if present).
i. Remove lid from floor box frame.
ii. Remove cap from inspection riser.
iii. Using a flashlight and stadia rod, measure depth of sediment.
iv. If sediment is at, or above, 3" (76 mm) depth proceed to Step 2. If not proceed
to step 3.
B) All Isolator Rows.
Step 2)
A)
B)
C)
Step 3)
i. Remove cover from manhole at upstream end of Isolator Row.
ii. Using a flashlight, inspect down Isolator Row through outlet pipe.
1. Mirrors on poles or cameras may be used to avoid a confined space entry.
2. Follow OSHA regulations for confined space entry if entering manhole.
iii. If sediment is at or above the lower row of sidewall holes [approximately 3"
(76 mm)] proceed to Step 2. If not proceed to Step 3.
Clean out Isolator Row using the JetVac process.
A fixed culvert cleaning nozzle with rear facing nozzle spread of 45" (1140 mm)
or more is preferable.
Apply multiple passes of JetVac until backflush water is clean.
Vacuum manhole sump as required.
Replace all caps, lids and covers.
Stanford Holdings, LLC Operation and Maintenance Agreement
Buxton, :'forth Carolina For Storinwater Systems
Page 5

Step 4) Inspect and clean catch basins and manholes upstream of the StormTech system
following the procedures for Classic Manifold Inlet System.
13.6 ECCENTRIC PIPE HEADER INSPECTION
Theses guidelines do not supercede a pipe manufacturer's recommended I&M
procedures. Consult with the manufacturer of the pipe header system for specific I&M
procedures. Inspection of the header system should be carried out quarterly. On sites
which generate higher levels of sediment more frequent inspections may be necessary.
Headers may be accessed through risers, access ports or manholes. Measurement of
sediment may be taken with a stadia rod or similar device. Clean -out of sediment should
occur when the sediment volume has reduced the storage area by 25% or the depth of
sediment has reached approximately 25% of the diameter of the structure.
13.7 ECCENTRIC PIPE HEADER MAINTENANCE
Cieanout of accumulated material should be accomplished by vacuum pumping the
material from the header. Cleanout should be accomplished during dry weather. Care
should be taken to avoid flushing sediments out through the outlet pipes and into the
chamber rows.
ECCENTRIC HEADER STEP-BY-STEP MAINTENANCE PROCEDURES-~
1. Locate manholes, access ports or risers connected to the header system
2. Remove grates or covers
3. Using a stadia rod, measure the depth of sediment
4. If sediment is at a depth of about 25% pipe volume or 25% pipe diameter proceed to
step 5. If not proceed to step 6.
5. Vacuum pump the sediment. Do not flush sediment out inlet pipes.
6. Replace grates and covers
7. Record depth and date and schedule next inspection
GRASSPAVE2 WITH 92% VOID SPACE AND HYDROGROW MIXTURE
GRASSPAVE2 WITH 92% VOID SPACE AND HYDROGROW MIXTURE: The
grasspave system will be provided by Invisible structures, Inc. and install and maintained as per
the manufactures instructions. The installation and maintenance criteria for the Grasspave2
system will include the following technical criteria:
11 DESCRIPTION OF WORK
A. Work Included:
l . Provide and install #57 washed stone wrapped in a geotextile fabric base as
shown on drawings, to provide adequate support for project design loads.
2. Provide Grasspave2 Paving System products including Grasspave2 units,
Hydrogrow soil polymer, and installation per the manufacturer's instructions
furnished under this section.
Stanford Holdings, LLC Operation and ,Maintenance Agreement
Buxton. North Carolina For Stornnvater Systems
Page 6

3. Provide and install clean sharp sand to fill the Grasspave2 units, when needed.
4. Provide and install grass by using Bermuda sod.
1.2 DELIVERY, STORAGE, AND HANDLING
Protect Grasspave2 units from damage during delivery and store under tarp to protect
from sunlight, when time from delivery to installation exceeds one week. Keep
Hydrogrow in a dark and dry location.
1.3 PROJECT CONDITIONS
A. Review installation procedures and coordinate Grasspave2 work with other work
affected. Generally, Grasspave2 is installed at the same time as project grass
installation, nearly the last site construction activity.
B. All hard surface paving adjacent to Grasspave2 areas, including concrete walks
and asphalt paving must be completed prior to installation of Grasspave2.
C. Cold weather:
1. Do not use frozen materials or materials mixed or coated with ice or frost. Be
careful in handling rolls of Grasspave2 in temperatures below 50 degrees F, as
product connectors become stiff and can separate, and the individual units will
retain the roll curl until warmed to room temperature (aided by placement in
sun for 15 to 20 minutes). If cold weather is anticipated. Grasspave2 can be
shipped in flat sheets that measure ]-meter (40") square.
2. Do not build on frozen work or wet, saturated or muddy subgrade.
D. Protect partially completed paving against damage from other construction traffic
when work is in progress, and until grass root system has matured (about 3 to 4
weeks). Any barricades constructed must still be accessible by emergency and
fire equipment during and after installation.
E. Protect adjacent work from damage during Grasspave2 installation.
PRODUCTS
2.1 AVAILABILITY
A. Manufacturer: (Grasspave2, Hydrogrow) Invisible Structures, Inc., 1600 Jackson
Street, Suite 310, Golden, Colorado 80401. Call from USA and Canada 800-233-
1510 toll free, International 303-233-8383, Fax [phone].
B. Local Sales Representative: (Contact Manufacturer)
Stanford Holdings, LLC Operation and ,llaintenance Agreement
Buxton.:vorth Carolina For Stormivater Systems
Page

2.2 MATERIALS
A. Base Course: Clean and washed #57 stone wrapped in a geotextile fabric will be
used as the base course. Any fill material will meet SP sand requirements to
match on site conditions. Selected materials should be nearly neutral in pH
(range from 6.5 to 7.2) to provide adequate root zone development for turf.
B. Hydrogrow Mix: A mixture made from several commercial products including: 1)
cross -linked polyacrylimide (<O.1%) polymer, which is non -toxic and neutral in
pH, and will absorb 150 to 350 times its weight in water from most tap sources; 2)
ZeoPro zeolite mineral, amended with small amounts of starter fertilizers, from
Zeoponix, Inc.; 3) Isolite porous ceramic, designed to hold large amounts of water
without physical degradation or change of size of particle, from Sumitomo Group;
4) and aggromolated Humate, a natural source of nutrients and micronutrients,
from Tri-C Enterprises.
C. Grasspave2 Grass Paving Units: Lightweight injection -molded plastic units
0.50.50.025 m (20"x20"xl" high, 2.7 ft2 each) with hollow rings rising from a
strong.open grid allowing maximum grass root penetration and development. The
plastic shall be 100% post -consumer recycled plastic resins, predominately
HDPE, with minimum 3% carbon black concentrate added for UV protection.
Loading capability is equal to 402 kg/cm2 (5700 psi) when filled with sand, over
an appropriate depth of roadbase. Standard color is black. Unit weight = 510 g
(18 oz.), volume = 8% solid. Units may also be shipped in pre -assembled into
rolls that vary from 10 square meters (108 so to 125 square meters (1345 so.
D. Sand: Obtain clean sharp sand (washed concrete sand) to fill the 25 mm (one
inch) high rings and spaces between the rings when seeding or -using 13 mm (half
inch) thick sod (soil thickness).
E. Grass: Use species resistant to wear by traffic generally a Zoysia, Fescue. or
Bermuda types in southern climates.
Sod: Use 13 mm (0.5") thick (soil thickness) rolled sod from a reputable local
grower. Species should be wear resistant, free from disease, and in excellent
condition.- Sod shall be grown in sand or sandy loam soils only. Sod grown in
soils of clay, silt, or high organic materials such as peat, will not be accepted.
F. Fertilizer: A commercial "starter" fertilizer, with Guaranteed Analysis of 17-23-
6, or as recommended by local grass supplier, for rapid germination and root
development.
G. Grasspave2 Sign: A sign to identify the presence of Grasspave2 paving, stating
that special maintenance is required, with the Manufacturer's phone number, and
made of durable materials for outdoor exposure shall be provided and installed.
Stanford Holdings. LLC Operation and ,ilaintenance Agreenzenr
Buxton. North Carolina For StormwarerSvsrems
Page 8

H. Firelane Signage & Delineation: Fire lanes must be identified regarding their
entrance and physical location with the placement of signs, gates, curbs, bollards,
etc. Specific signage wording and other details must be coordinated with and
approved by local fire authorities.
EXECUTION
3.1 INSPECTION
(It is recommended- that Fire Department inspectors be scheduled to inspect
installation of Grasspave2 during preparation of the subbase, installation of the base
course, and installation of Grasspave2 units. Most small projects can accommodate
these inspections all on the same day. Verify with Fire Department if certificates of
inspection are required.)
A. Examine subgrade and base course installed conditions. Do not start Grasspave2
installation until unsatisfactory conditions are corrected. Check for improperly
compacted trenches, debris, and improper gradients.
B. Installation constitutes acceptance of existing conditions and responsibility for
satisfactory performance. If existing conditions are found unsatisfactory, contact
Project Manager for resolution.
3.2 PREPARATION
(Ensure that subbase materials are structurally adequate to receive designed base
course, wearing course, and designed loads. Generally, excavation into undisturbed
normal strength soils will require no additional modification. Fill soils and otherwise
structurally weak soils may require modifications, such as geotextiles, geogrids,
and/or compaction (not to exceed 90%). Ensure that grading and soil porosity of the
subbase will provide adequate subsurface drainage.)
A. Place base course material over prepared subbase to grades shown on plans, in
lifts not to exceed 150 mm (6"), compacting each lift separately to 95% Modified
Proctor. Leave minimum 25 mm (1 ") to 35 mm (1.5 ") for Grasspave2 unit and
sand/sod Fill to Final Grade.
B. Spread all Hydrogrow mix provided (spreader rate = 2.25 kg per 100 m2 (5 lbs
per 1000 ft2) evenly over the surface of the base course with a hand-held, or
wheeled, rotary spreader. The Hydrogrow mix should be placed immediately
before installing the Grasspave2 units to assure that the polymer does not become
wet and expanded when installing the units.
Stanford Holdings. LLC Operation and Maintenance:4greement
Buxton. ;North Carolina - For Stornnvater S -Stems
Page 9

3.3 INSTALLATION OF GRASSPAVE2 UNITS
A. Install the Grasspave2 units by placing units with rings facing up, and using pegs
and holes provided to maintain proper spacing and interlock the units. Units can
be easily shaped with pruning shears or knife. Units placed on curves and slopes
shall be anchored to the base course, using 16d Common nails with fender
washer, as required to secure units in place. Tops of rings shall be between 6 mm
to 13 nun (0.25" to 0.5") below the surface of adjacent hard -surface pavements.
B. Install sand in rings as they are laid in sections by "backdumping" directly from a
dump truck, or from buckets mounted on tractors, which then exit the site by
driving over rings already filled with sand. The sand is then spread laterally from
the pile using flat bottomed shovels and/or wide "asphalt rakes" to fill the rings.
A stiff bristled broom should be used for final "finishing" of the sand. The sand
must be "compacted" by using water from hose, irrigation heads, or rainfall, with
the finish grade no less than the top of rings and no more than 6 mm (0.25")
above top of rings.
3.4 INSTALLATION OF GRASS
Install thin sod directly over sand filled rings, filled no higher than the top of the
rings.- Sod strips should be placed with very tight joints. Sodded areas must.be
fertilized and kept moist during root establishment (minimum of 3 weeks). Sodded
areas must be protected from any traffic, other than emergency vehicles, for a period
of 3 to 4 weeks, or until the root system has penetrated and established well below the
Grasspave2 units.
3.5 PROTECTION
Sodded areas must be protected from any traffic, other than emergency vehicles, for a
period of 3 to 4 weeks, or until the root system has penetrated below the Grasspave2
units.
3.6 CLEANING
A. Remove and replace segments of Grasspave2 units where three or more adjacent
rings are broken or damaged, reinstalling as specified, so no evidence of
replacement is apparent.
B. Perform cleaning during the installation of work and upon completion of the
work. Remove all excess materials, debris, and equipment from site. Repair any
damage to adjacent materials and surfaces resulting from installation of this work.
C. Inspect grasspave2 system on a periodic basis to include complete inspection of
the materials every 6 months and after every storm event. If ponding occurs,
remove and replace turf, base and grid system as required.
Stanford Holdings, LLC Operation and Maintenance Agreement
Buxton, A'orthCarolina For StormwaterSrstenis
Page 10

ACKNOWLEDGEMENT:
I acknowledge and agree by my signature below that I am responsible for the performance of the
operation and maintenance agreement for stormwater systems procedures listed above. I agree to
notify NCDENR of any problems with the system or prior to any changes to the system or
responsible party.
Print Name and Title: —� k l
� �
Address: 4 a U xTo " c7v0
Phone: Date: 1
Signature:
Note: The legally respoprsible pahV ld 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.
1, &,, ,:�\& a Notary Public for the State of N -C _ , County of
do hereby certify thatc����,-`�
personally appeared before me this VI day of
c�C)and acknowledge the due
execution of the forging operation and maintenance agreement for stormwater systems
requirements.
Witness my hand and official seal,
r�
SEAL My commission expires
Stanford Holdings. LLC Operation azzd :tlairzterzazce,4greenTent
Buxton. North Carolina For Stornnvater Systems
Page 11

AUG 10.2006 . Siam of North Carina
Department of Fmvftonment and Na timal Resmaces
DwQ Division of Water QuaUty
PROJ # STO%MWATER MANAGEMENT PERMIT A"LICATION FORM ' f
7Us lbrw may hephatocupied far use as an original
L GEA ERAI MMI MATION
L Applicants name (specify the name of the corp-oratlun. individual etc. whu awns the prate:
Z_ Owner/Signing Mdai's same and tide (person legalty �aons#h1e far fadlity and oonq) lance):
Rub". 5--fvkc� 1 O-Cefm�- - - -
T_
3. Mailing Address for person listed m item 2 alcove:
44-11-i 0 VAia htjav M _ P.0. Box ►to
4- Project Name Wbdivlmm f mfflW, or a onblbbmetit name - should be emisistemt with project name on plans,
spedHcations. letters, operation and maintenance agreemnents, etc.):
e :A-elbOAC
5. Location of Project (street
County-_.
B. Directions tto prvdect from nean> stmasor futon):
T. Latitude: _ 35J 511 - -- Longitude: '15. 4'1 of project
8. Cant = person who can answer questions aboutthe project
Nam l�l0.y TyY1 �- Nict�s�� - • -- Telephone Number_ (15 7
m P WMTr MMI MATION:
Z1. Spetify whether proper is (check tone): New Renewal IVModi$cation
RECEIVED
FOM SWi7--ID1 VMS- o; 399 Page 1 of 4
AUG i 4; 2006
DwQ
PROD #

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i
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2. H dais appi%adon is being sub as the result of a renewal or modWcatfart to an es:isftg pmin'ut, list the
edstiiag Permit number 1 - - -- _ and its issue date Cif kn wn -- - _
3. Specify the type of project (dw& one):
Law Density Ffigb Density V General Permit ___otber
4. Additional Project (check applicable blanks)_
CAMAMajcw Control 404/401 Permit ZNPDES Staumwater
informadon an required state pegs can be obtained by corftcting the Cuskmnfw Service Center at
1-877- 62M748.
M PROJECT DWORMAMON
1. In the space provided below. ww=ariae huw staumvvaxer Will be beataxi. Also attach a detailed narrative
(one to two pages) descrfl tg stm mwater for the
r,�wvv iH1]r,
2. SftMUWater rEmollifMM this project drains to the River basin
3. Tonal Project Area: , - 3- �$ - - -arms 4. Project Built Upon Area: �AiD 90
S. How many dradnage areas does the project have?--3-
6 Complete the fallaw%ng tuffarmation far each drainage aura. N tbere one pore than two drainage areas m the
prcajeM attach an additional sheet with the infDrmx§Wm for each area provided in the saute form=t as below.
' hnw vtaw area is dared as the built LV= area fndu&ap, but uaaat limited m bAdhggs, roads; pig areas.
sideway gravel arras, err-
Fame SWQ101 Version 3.99 Page 2 of 4

r
r
t ,.

DRAINAGE AREAS
STWTR MGMT AREA
note
A
B
C
I9 4--C
BASIN INFORMATION
Receiving Stream Name
Pasquotank
Pas uotank
Pas uotank
Receiving Stream Class
SA
SA
SA
Drainage Area
26658
253891
18644
Existing Impervious Area
0
0
0
Proposed Im ervious Area
17083
32946
11727
%Impervious Area (total)
0.64
1.30
0.63
DRAINAGE AREAS
A
B
C
IMP. SURFACE AREA
On -Site Buildings
11072
18252
0
On -Site Streets
0
0
On -Site Parkin2
2945
12542
1749
On -Site Sidewalks
0
0
Other (Turf Stone Parkin Areas)
1
4717
3311
0
Other (Grasspave 2 Parkin Areas)
2
16630
Stormwater Surface Area
Off -Site
TOTAL:
18734
34105
18379
Adjusted Total for 65% Turf Stone Pavers
17083
32946
11727
Adjusted Total for 60% GrassPae 2 Turf System
NOTES:
T
1. Turf stone Pavers have 8" washed #57 stone base and area will be discounted to 65% of area
2. Grasspave 2 system has 6" washed #57 stone base and will be discounted to 60% of area.
4.
pT
� sir �#�{ C6�l�t
IRE C EI 7. _;
auU 10 2000-
DWQ
PROD #
� ----- AD —
ic,5-(
N�� S C.,U. , ,
C, 4. W,�

7. How was the off -site impervious area listed above derived? tAtQfJ%A'C lid- [ Y► C - N _^
IV. DEED RESTRICTEONS AND PROTECTIVE COVENANTS
The following italicized deed restrictions and protective covenants am retired to be reca-ded for all
subdivisions. outparcels and future development prior to the sale of any lot. If lot sizes vary significantly, a table
listing each lot numb. size and the allowable built upon area for each lot must be provided as an went.
I. T.be fulZowing aovemants are to emaue mpg mmpJianw wfth statee sWrmmter meat permit number
as issrsed by t he DivI4= of Matw (Trai t ZLe c oov amiss may aunt be
changed or deleted without the tansent aft —he State.
2. Nn more than square &et ofanyhtsbatl be covered bye arbmpwvfaus ifs.
imperviophalt graved onnerem lcrn* stone~ shau or material but do rmt include woad
deding or the Wam surhm ofsWh=MUgpWhu
3. Swales shall not hem arc. pip4 or altmW erupt as mms=T to provide ddveway an sh
4. Built -Upon area in ear ofthe permiiied amount reqmb= a state scwwraterm gkpam2ft madMadon prior to
consOr[rctlorc.
S. ABpernrtolcd rum ffmm outparcds orAxkffe de f t shalt be d ccftdhUo tb-.pern dffed sknmwater eantrW
system. 7bese cannacakostatbestinnnvato comal system shag he perturmed Ina maeme- thanndabins the inhVIty
and peeferemance of the system as pernzUted
By your signature below, you certify that the recorded deed restrLatons and protective covenants for this project
strati include all the applicable items required above. that the covenants will be binding an all partles and persons
daiming tinder the= that tfiey will rem with the lanxt that the required covenants cm rwt be changed or deleted
without concurrence from the Stam and that they will be recorded prior to the sale of any Lot
The applitable stag stornav ater management permit supplemeerct farms) listed below must be submitted for each
SMP sped$ed for this project Contact the Stormwatesr and General Permits Unit at (919) 733-SM for the statto
and avaliabiiity of ttleae forms.
Form SWU-102
Wet Detention Basin Supplement
Fmm S RJ -103
bmfibrzoon Basin Supplement
FarnuSWU-104
Low Density Supplement
Form sow-105
curb Outlet system Supplement
Fonn SWU-106
Off -Site System Supplement
Foram SWU-107
Underground Infiltraflon Trench Supplement
Form SWU-108
Neuse river Basin Supplement
Farm SWU-109
I'-MMBLIVe Best Mom. Practice Supplement
Fora SWU-101 Vearsion 399 Page 3 of 4

VL SUWAITFAL REQUDUMMUS 5
Only complete to application pac[ages will be accepted and reviewed by the Divlsian of Water Quality (DWQ).
A complete package includes ail of the items listed below- The complete application pacitage should be
submitted to the arppmpemte DWQ Regkm;d Office_
1_ Please indicate tffit you have provided the fallowing required man by Ming in the space provided
rte 'to each item
Initials
• Original and one copy of the Sbarmvvater Management Permit Appiiratinn Form G 6 M
• One copy of the applicable Supplement Form(s) for each BUF M
Permit application processing fee of WA (payable to NCDIIWQ $ LI t OW �' M
- Detailed narrative description of storravr row treatmentfmanagemeni M
- Two copies of plans and sperm. including _ 9, M
name
Engineer and firm
- Legend
-North arrow
- Scale
- Revision number & date
- Mean bigh water line
- Dimensioned property/project boundary
Location map with named sbwft or NCSR numbers
Original contmmm proposed oontmvsi, spot eleyatior,c $shed Boor elevations
- Details of marls, drainage feabxres. collection systems. and staormwatrr control measures
- Wetiends delneatekL urn note on plans that none exW '
- Foisting drainage (indudbtg off -site). drainage easemeats pipe sizesrunoff calculations
- Drainage areas delineated
- Vegetated hinters (where required)
VM AGENT AUTHORIZATION
Ifyou wish to die authority to another individual or Rm sa that they may provide inforroathm on your
behalf. please complete this section.
A
VM. APPLICANTS CERTMICATION
L On nt or type name afpown listed to Gwe al WhnmaUm item 2a
certify that the Inf rmutinn induded an application foam is, to the best of nay knowledge, correct and
that the project will be constructed in with the approved plans, that the required deed restrictions
and protective covenants will be riled, and the proposed project cornpiies with the of 15A
NCAC ZH _100M z
Signature: Date: 7,
i'annSWU-101 Version3AW Page 4of4

Inv,
cy
State of North Carolina
p,UG 1 D twu Department of Environment and Natural Resources
Permit No.
(to be provided by DWQ)
D*Q Division of Water Quality
Quality
# ORMWATER 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.
L PROJECT INFORMATION
Project Name -: Real Kiteboarding__.,...:_
Contact Person: Clayton E. Massey, P.E. Phone Number: [phone]
This worksheet applies to: Basin No. A / C in Drainage Area: A
(as identifl-d on plans) ({ram Form SWU-1Of)
H. DESIGN INFORMATION - Attach supporting calculations/documentatiom 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 (&nsl).
Souls Report Summary
Soil Type Newhan Corolla
Infiltration Rate 20 inllir r ef/hr/sf (circle appropriate units)
SHWT Elevation 3.5 fmsl (Seasonal High Water Table elevation)
Basin Design Parameters
Design Storm �'2 inch (1.5 inch event for SA waters, I inch event for others)
Design Volume 2094 c.f.
Drawdown Time O• oZ days
Basin Dimensions
Basin Size
odd size
ft. x
ft. = 2595 sq. ft. (bortom dimensions)
Basin Volume Provided
2240
c.f. *
(Basin odd size, area is calculated.)
Basin Elevations
Bottom Elevation
5.5
fmsl
* Basin A Volume = 859 c.f.
Storage Elevation
6.0
f nsl
Basin C Volume = 87 c.f. (linked)
Top Elevation
6.2
fmsl
Upstream Swale = 184 c.f.
Void Space in Turf Stone Base = 1258 c.f.
Total Available Storage = 2240 c.f
Form SWU-103 Rev 3.99 Page I of

*1
!! • 1 !' -if ?-IN w 513 ialw:.I Dr-04N
The following checklist oudines design xatelft per the S6ormwatet Best 9, Prddices Manual
(N.C- Depaxtunt of F�+Q+*+ e , Health and Natural Re=avm Febraaxy 1999) and Code
Seddon: 15 A NCAC 2H .1008-
Inoitial in the space provided to indicate tiut ih .following desif reyquimmends hwm been mwt and supportmg
dacaventalion is attached. If the applicma has dedgpated an agent is the Staanwatar Mmageraent Pest
Application Foram,-t aged !ul W initial below- 4 i# hm not bees !suet
Applicants hdit s
C-ETn a- Syshza is located 50 few Jimm class SA watew and 30 fit f3 other sarfwe waters.
C,tn b. System is kocated at lust I00 feet ttma water supply wails_
C'Sir= c- Bnthnn of system is at least 2 feet above: dw seaw aal Mgh watertable.
C'eM I d. Bottoan of the syis 3 feet above any bedrock or inpeaviow suit harizom
G� l>� e - S is not sited cm or in M matzal or DWQ approval has been obtahM&
N 1 k f` System is.located in awed chminag�e easpaant faw the purposes of opsxaUou and
ntuntwance and leas xecowded access easeweats to the newest public right -of way
Cti!"ti g: Ekah%Mp area fear the devices is less than 5 amess.
b. Soils barve a miahmum hydrmmiie conductivity of 0-52 inch per brow and soils report is
aMched.
Y+R i. System captures and blilftafts the riff fiow the fast 1.0 inch of ill ("inch event for
areas draining to SA )- Design vohnn a and woncdkmIatioms adlaohed.
GEM j- SysUm is steed to lake iD accomut the mat &e uhhoaft bu&-our po1aviisl. fbom all
Ito llike., systtza, iwhudmg any off -site dndn ge. Cakulations amarhed.
exon k. All side slopes SUbilizedwith vegetated cover are no steeper. than 3:1 (H:V)-
CJ�C�e L A pret P I r device such as a catch basin, grease drag, fitter stop, grassed swaie ar
sedimexet trap is proves
09�%n m: Bottom afr ibe dotrit.e is covered va& a layer of elcan sand to an avexage depth of 4 inches or
clause vegetative cover is provided_
Caw%
n. Veg,6taLed fi r is paroovidcd fear ovedlow and dawn is shown, on plan (Required minimum
length is 50 feet far SA warms, 30 feet for other waters)-
P 10, o- Flow &skftxdmmech=isw wMin the basin is provided,
c lcs*� p. A benchmwk is provided to determine the sed mcut accuandaticza in. the pretmatmait device.
q Rxnoffin excess ciE*c dcsign vohm a bypasses off -fine systems (bypass dui pmvideM-
C TM► r_ System as designed to dmw down tha design stake voln me to the proposed bottom
devadoix under seasonal high water c ondietic= vviif fin days- A soils report and all
pert" dmw-clown uses am armed.
GEM
s- Plams axed= fiat the: installed system wf meet desigi specific s (consftuc ed or
reek ed) mpon im ial operation once the project is elate and the emit drainage area is
siabRized.
FVM SW U-103 ltev 399 Pagie 2 of 3

IV. INFMTRATION BASM OPERATION AND MARUENANCE AGIMMENT
1. After every runoff producing rainfall. event and at least monthly inspect the infiltration system for erosion,
trash aocurmnlation, vegetative cover, and general condition.
2. Repair eroded areas immediately, re -seed as necessary to maims adequate vegetative cover, mow
vegetated cover to mamffiin a mmdnwm height of six inches, and remove trash as needed.
3. After every runoff producing rainfall event and at least mouddy inspect the bypass, inflow and overflow
structures for blockage and deterioration. Remove any blockage and repair the structure to approved design
Specif is 7tion
4. Remove act sediment 6 the meat system and in ftratian basis amanally or when depth
in the tment unit is reduced to 75% of the original design depth. The system shall be restored to the
original design depth without g. Over -excavating may cauw the =quhW water table
separnum to be redid and may wise the abffiW of the system to perform as deigned. Removed
sedimment sball be disposed of in an appropriate mariner and shall not be handled in a manner that wM
advemely impact sty CLe. sbxJgn ing new a svwxrwater treatment device or st v*=6 etc.).
A benchmmk shall be. estal3lished in the pm rea eat twit. The benwill document the original
desWa depth so that accurate sedinuot cgs can be talQeam. Tb a mmm msuring device used to
determine the depth at the benchmark d call be such that it will give an accurate depth reading and not
readily pent rate into accumulated s
When the de dgm did; ids 5 • ` fen in the px dr at unit the sediment shall be
removed from bath the pich Bait and the bAmuratim basin.
5_ If the Division defines that the system is Wig, the system will ininiediately be repaired.to original
design ifthe system camot be repaired to peffornn its design fuution, other stounwater
control devices as allowed by NCAC 2H _I000 must be designed, approved and constructed.
I acknowledge and ag= by my mature below that I am, responsible for the performance of time five
rye procedures fisted above_ I agree to notify DWQ of any problems with the or prior to any
changes to the system or responsible party.
PrivtNameandTitie: P;�
Address: `Y
Phone: ,
Signature:
Note: 77W legnUy nsalep sh t b a hamep m m axwc&affax wdecs more than 5096 of the lots have been soil and a
residers of the svbzUvhdAm the prWdem
I, � - . a Notay Public for the Staff of t3OMMy of
do hereby cawy *at— j�r`V S . �c� r rht S� � �__. pmonaUy appeared before me this -12
day of � a\nd a®ckknav4vd�p the due exeeation of tine forgoing bafiftratinn trim ice vequk ueots.
Riitntss my baud and official seal,
SEAT, } OF IZ SEALM
} nd-y wNIC- "am C.A.M.
DARE COUNTY
JODY L MIDGETT 4
My Commission Expires
Form SWLT-103 Rcv 3 sae 3 of 3

Me —1177F.1 - . 1 _ . . . . • -
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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 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.
.Z11TI� 1011311 0 Y [IM
Project Name: Real Kiteboarding
Contact Person: Cig3qLon E. Massey, P.E. Phone Number: [phone]
This worksheet applies to: Basin No. B in Drainage Area: B
(as identifi-d on plans) Oj om 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
Newhan / Corolla
20 in/hr or cf/hr/sf (.,&de appraprl-w ru n)
3.5 fmSI (Seasonal High Water Table elevation)
1.5
inch
3974
c.f.
0.10
days
odd size ft. x
5201 c-f.
5.5
fmsl
6.0
f nsl
6.2
fmsl
f.5 inch event for SA waters, I inch event for others)
Form SWU-103 Rev 3.99 Page i of 3
ft. = 1282 sq. ft. (bottom dimensions)
* Basin B Volume = 603 c.f.
Upstream Swale = 245 c.f.
Void Space in Turf Stone Base = 883 c.f.
Stormtech SC-310 System = 3470 c.f
Total Available Storage = 5201 c-f

-#Z
I11 / 1!1 A )]IV#.NkTiMEN:lDEN "O
The following checklist outlines design per the Stormwater Best ManagPractices Manual
(N.C. Department of F.mvironmemt, Health and Naiinral Resoumes, February 1999) and A Code
Section. 15 A NCAC 2H .1008.
Initial in the space provided to indicate that the following design red-duemen#s have been met and supporthig
dommentatiunn is attached If the applicant has designated an agent in the Sboniawater Peanit
Application Fomu, the agent may initial below. Atbwb jusfiflemflon if a nnhhas not been met:
Applicants Initials
P►{}Aa. System is iodated 50 feet from claw SA waters and 30 feet from other surface waters-
G b. System is located at least 100 feet from water supply wells.
MT%, c_ Bottom of system is at least 2 feet above the seasonal high water table.
cx n1 d. Bottom ofthe system is 3 feet above say bedrock or impervious soil horizo
Mtn% e. System is not sited cm or in fill matcal or DWQ approval has been obtained.
N Al £ System is located in a recorded drainage easenicut for the purposes of operation and
made and has recorded access easements to the nearest public rift -of --way.
Gra * 1 it Dzsinage area for the device is less than 5 ages.
M WI h. Soils have a mi annunr hydmuhc conductivity of 0S2 mehes per hour and soils report is
attached.
MVA
COON
i- Stem captures and iuffl the ranoff from the fast 1-0 inch of rainfall (1-5 inch event fro
areas drahcing to SAwaters )-Designvolume and cahm ations aohared_
Sys is gzed to tape into acconat tine rcmoffat the ultimate b Rt-ont potential rJ all
surfaces drag to the systrrn, including any off -site drainage. Calculations ate.
k. All side slopes stabilized withvegetaftal cover are no steeper than 3:1 (H:V).
Cx� L A plef, device such as a catchbasin, grease trap, fiitret strip, grassed Swale or
sediment trap is provided-
CgXq
in- Bonom of the device its covered with a layer of clean sand to an average depth of 4 inches or
dense vegetative cover is pmovidied_
CX h n. Vegetated filtcr is provided for ovaflow and detail is shown on plans (Required mulhnum
length is 50 feet for SA waters, 30 feet for other waters).
i� A o. Flow disbibudon Tisza within the basin is provided
UM p- A benchmark is provided to determine the sedimeai acxuaaalatidm in the pretreatment device.
GSM q. Runuffin► excess of the design volume bypasses off-line systems (bypass dell provided) -
CAM ^_ r. System is designed to drain down the des4W storage volume to the proposed bottom
eevatiatt under seasonal high water conditions within five days. A soils report and all
pert draw -dowry Calculations are attachedl.
GE1ti► s. Plans ensure that the installed system will mea design speczfitcataidms (constructed or
restored) upon initial operation once the project is complete and the entire drainage area is
stakblized.
Form SVM-103 Rev 3.99 Page 2 of 3

IV. ]W14 'I`RATIEON BASIN OPERATION AND MAMTENANCE AGREEMENT
1. After every runoff producing ramW event and at least monthly inspect the IItfiltrafion system far era son,
trash accunruiation, viegetafive cover, and general conditiam
2. _ Repair eroded areas immediately, re-sced as necessary, to maisrtam adequate vegetative cover, snow
vet cover to maims a mniximimn height of six inches, and remove trash as mededL
3. After every runoff producing rainfall event and at least molly inspect the bypass, inflow and overflow
structures for blockage and deUmiam ian_ Remove any blockage and repair the structure to approved design
specifications
4. Remove mated sediment fiiQm the pretreal. system and iofaticm basin annually or when depth
>n the unit is reduced to 75°% ofthe original design depths_ The system shall be restored to the
odghwd design depth wig over -excavating_ Over -excavating may Pause the rrxpzied water table
separation to be reduced and may c amuse the ability ofthe system to perfarm as designed. Removed
sediment shall be disposed of in an appropriate manner and sbaU not be handled in a that will
advesely impa water quality Cie- stockNling near a stounwater treatment devioe.or stream, etc. .
A bend shall be established in the unit The bed will document the original
design depth so tin ante action nano. be taiw- The mewing device used to
dew the depth at the bmchma& shan be such brat it WM give an accoaft depths reading and not
readifly penetrate into accumulated sedieats.
When the deskm &=& reads y' fiat In the Iffeft caftnent maim the sedimuft shalt be
removed from baith the p.0reahneW mutt Md the hdWrefloji bsfim
5. If the Division dues that *a system is fiffling, the system will immediately be rgaired to original
design se am. 7fthe,system =moot be rgmfiud to perf =mL ids design fhnction, other sto=mater
control devices as ahitswed by NCAC 2H _1000 must be designed, approved and consftucted.
I acknowledge and agree by my signature below that I am responsible for the petfa of fte :five
ice procedures listed above. I agree to notify DWQ of any problems with the system or prior to
changes to them responsible party -Mid .,4 Jkm 1
Pant Name Title:
Note: The kgafts spdn—m le ally uld he a homeowners awooci z on unless mom that SW of she lots have been sold and a
rescident of the srrbdlvis a een nand the president
a Notary Public far the 31a1e of �5 _ County of
�--- do hereby certify that persansliy qweared before me this VI
day of-b�r'.� , Flo - and ac"awledge the due =wcaft= oftbe furgamg mMtratiaa basin alai enaace mqubements.
Wimess my lid and official seal, c�
SEAL .• �- ..- ...- . �_.-.. coinmisgcm eapixes S\ ` �.`� •-d�1C]`�
OFFICIAL SEAL -
K&A" Pdnc - r►m+n CMMV s
4 DARE COUNTY
JODY L. MIDGETT 4
Farm SWi7 1Q .$ 9;�3►mission Expires Fa e 3 of 3

VARIANCE TO CHECKLIST ITEMS
SWOT 103, PAGE 2 of 3
STORMWATER BASIN "B" (only)
May 19, 2006
Item a.
Depending on definition, a portion of Stormwater Basin "B" may be located within 50' of
a class of SA waters. In a previous permitted work efforts, the Owner cut in a boat basin
as the jet sld launch site for the kiteboarding facility. It is this boat basin which is within
the 59 of stormwater basin `B"_ The limits from the infiltration basin to the boat basin
are M as requested by Mr. Vinson via e-mail on May 11, 2006. The natural shoreline is
over 100' away from the stormwater management facility_

NCDENR
North Carolina Department of Environment and Natural Resources
943 Washington Square Mail, Washington NC 27889 (252) 948-Wl FAX [phone]
Request for Express Permit Review
FILL-IN all information below and CHECK required Permit(s).
Please include this with the application package upon submittal. Project application received after 12 noon will be
stamped in the following work day. Thank you! Lyn Hardison iir,.raraisorl�r?cmail.ne
APPLICANT Name Trip Forman _
Company _Stanford Holdings, LLC ^
Address -47170 Highway 12, P.O. Box 1473 _ _ _ City/State— Buxton, NC Zip 27920
Phone [phone] Fax [phone] Email_ tripC�realkiteboarding.com
PROJECT Name Real Kiteboarding - - -- County Dare
PROJECT_ LOCATION (ADDRESSI 25676 NC HIGHWAY 12, WAVES, NC
ENGINEER/CONSULTANT Clayton E. Massey, P.E.
T Company Massey - Design and Associates, PC
Address 1561 Bradford Road Suite 204 City/State— Virginia Beach, VA Zip 23455
Phone [phone] Fax [phone] _ Email clayA�)massey c.com_
State or National Environmental Policy Act (SEPA, NEPA) — EA or EIS Required ❑Yes ❑ No
❑ STREAM ORIGIN Determination; # of Stream calls; Stream dame
STORMWA TER . ❑ Low Density ❑, High, Density -Detention Pond ❑ High Density -Other
❑ Low Density -Curb & Gutter High,Density-Infiltration ❑ Off Site
PROJECT SYSTEM(S) TRIBUTARY TO _ STREAM NAME TAR-PAMLICO RIVER BASIN
❑ COASTAL ❑ Excavation & Fill ❑ Bridges & Culverts ❑ Structures Information
MANAGEMENT ❑ Upland Development ❑ Marina Development ❑ Urban Waterfront
AS LAND QUALITY 0 Erosion and Sedimentation Control Plan with 7. 3 acres to be disturbed. CK #
❑ WETLANDS (401) ❑ No Wetlands on Site (letter from COE) [:]Wetlands Delineated/No JD
❑ Greater than 0.1 AC Wetlands impacted [:]Jurisdictional Determination has been done
® Less than 0.1 AC Wetlands Impacted ❑Greater than 0.5 AC Wetlands Impacted
CIRCLE YlN: 401 Application ❑Yes ® No ' 404 Application in Process w1USCOE ❑Yes ® No
The legislation allows additional fees, not to exceed 50'% of the original Express Review permit application
fee, to be charged forsubsequent reviews due to the insufficiency of the permit applications.
V.
CHECK #_ 115 REGEUVED
SUBMITTAL DATES: Fee Split for multiple permits:
SW $'
CAMA $ JUN 2 0 2006
LQS $ -
401 $ DWQVARD
Total Fee Amount $ _�DDD .�

OFFICE USE ONLY
Date Received Fee Paid Permit Number
('/ate oG �Q�0 V 7,,& o 6 a3 -
. State of North Carolina
Department of Environment and Natural Resvuroes
Division of Water Quality
,J U N 2 0 2 0 0 6STORMWATSR MANAGEMENT MMUT APPLICATION FORM
This Farm may be photocopied for use as an m g7iml
DWQ-WARO
L GENERAL INFORMATION
1. Applicants name (specify the name of the corporation, individual, etc. who awns the pmje�:
5+a r,rd ^"o GingS . Inc.
2. Pript Owner/Signing Official's name and title (person legally responsible for facility and compliance):
Robe-' 5 Sri ,- 1-0C4Zmavi . T5
3. Mailing Address for person listed in item 2 above:
4-71-1O u4 a kwa%j ! A . tP. D. box up
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.):
5. Location of Project (street address):
N G lA i a lot
city: -- \A J A V e-S - - - County:
6. Directions to orolect (from nearest maior intersection):
7. Latitude: 35. 5[Q _. Longitude: 75. L+1 of project
S. Contact person who can answer -questions about the project:
Name: C.19N fiVX El. Telephone Number. ('75 } 14&Ll r 06 ZZ
II. PERMIT INFORMATION:
1. Specify whether project is (check one): V/New Renewal Modification
Fort SWU-l0I Version 3.99 Page 1 of 4

L� , _
.'
�.,
-.

2. If this application is being submyted as the result of a renewal or modification to an existing perrnit, fist the
exmdng permit number and its issue date (if known) _
3. Specify the type of project (check one):
-- Low Density High Density V Redevelop General Permit Other
4. Additional Project �(chec=kble blanks):CAMA Major �SedControl 404/401 Permit ZNPDES 5tormwater
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 haw stonnwater will be treated. Also attach a detailed narrative
(one to two pages) describing store water ent for the roject .
2. Stormwater runoff from this project drains to the _Q �Q�V►`Z`$ ASr0
River basin.
3. - Total Project Area: _ 3.!As acres
4. Project Built Upon Area 4010 %
5. How many drainage areas does the project have?-__ .3^
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 1
Drainage Area 2
Receiving Stream Name
Receiving Stream Class
Drainage Area
Existing Impervious- Area
Proposed Irnpeivious"Area
% ire 'our' Area (total)
Impervious' Surface Area
Drainage Area 1
Drainage Area 2
On -site Building's
On -site Streets
On -sine Parking
On -site Sidewalks
Other on -site
Off -site
Total:
Totah
Imperviam arm is deed as the built upon arm including but not limited to, buildiris, roads parUng arras,
sidewalts, gravel areas, etc
Foam SWU-101 Version 3.99 Page 2 of 4

REAL KITEBOARDING 6r16l2006
DARE COUNTY, NORTH CAROLINA
DRAINAGE
AREAS
STWTR MGMT AREA
rote
A
B
C
D
BASIN INFORMATION
Receiving Stream Name
uotank
uotank
pasquotank
RnmN Steam Class
SA
SA
SA
SA
Orainape Area
26658
25389
14875
16844
E� lmpwvlmz Ares
0
0
01
0
1Ama
261571
16740
8693i
18379
961ffmmvimm Area
0.98
0,66
0.68
0.99
DRAINAGE
AREAS
A
B
C
D
IMP. SURFACE AREA
On Site 13uwings
15482
7488
229
0
On -Site Sheets
0
0
On -Site parking
8469
4308
2607
1749
On-96 Sidewalks
0
0
Offer ffurf Stone Parkin Areas
1
216
3535
4908
0
Other(Grasspave 2 PaftlqArem
2
16630
Shxmwater Surface Area
19W
1409
949
OS -Site
TOTAL
26157
16740
8693
18379
NOTES:
1_
Turf stone pavers. have 6' washed 357 stone base and area wW be discounted to 70% of area
2.
G 2 qTyn has 6' washed #67 stone base. Since infiltration is below gFawWave,
no a4ustinent to the im Cover calcuktbon was taker.

7. How was the off -site impervious area listed above derived? �fAraQf 9� -mil CNJ)J�
W. DEED RESTRICTIONS AND PROTECTIVE COVENANTS
The following italicized deed restrictions and protective covenants are required to be recorded for all
subdivisions. outparcels and future development prior to the sale of any lot. If lot sizes vary significantly, a table
Listing each lot number, size and the allowable built -upon area for each lot must be provided as an attachment -
I. The fo1 owhw covenants are intended to ensure ongoing compliance with state stormwater management permit number
- -5 u 'I a&wl A-5 -- as issued by the Division ofWater Quality. Terse covenants may not be
changed or deleted without the consent of the State.
2. No more than W '11 D square feet of any lot shall be covered by structures or impervious materials.
Impervious materials include asphalt graveL amcreM hricL stony slate ar similar material but do not include wood
decking or the water surface ofswimming 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 managementpermlt mods&cation prior to
construction.
5. All permitted 3runaff fi-om ou4x noels or future development shall be directed into the permitted stormwater control
system. 7bm connections to the stormwater emrtrol 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 Per writs 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
Forth 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 Hest Management Practice Supplement
Form SVM-101 Version 3.99 Page 3 of

VL SUBMTTTAL REQUIREIdENTS
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 Regianal Office.
Please indicate that you have provided the following required information by initialing in the space provided
next to each item.
• Original and one copy of the Stormwater Management Permit Application Form
- One copy of the applicable Supplement Form (s) for each BMP
• Permit application processing fee of)00 (payable to NCDENR)y i ow
• Detailed narrative description of stormwater treat inent/management
• Two copies of plans and specifications. including.
- Development/Project name
- Engineer and firm
- Legend
- North arrow
- Scale
- Revision number & date
- Mean high water line
- Dimensioned property/project boundary
- Location map with mined streets or NCSR numbers
initials
C16M
CeM
Gf� M
CEM
G9-M
- Original contours, proposed contours, spot elevations, .finished floor elevations
- Details of roads, drainage features, collection systems, and stormvvater 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)
VIL . 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.
Designa
Mailing
City._
Phone:
VIII. APPLICANTS CERTIFICATION
I, (print or type name of person listed in Generai Information, item 2)
certify that the information included on t application form is. to the best of my knowledge, correct and
that the project will be constructed in ormaruAwith the approved plans, that the required deed restrictions
and protective covenants will be riled, and tha the propost
NCAC 214.1000.
Form SWU-101 Version 3.99 Page 4 of 4
project complies with the req men of 15A
Date:

Permit No. �7 a6 a 6a3
(to be provided by DWQ)
RECEKState of North Carolina
L`�"" l� Department of Environment and Natural Resources
e Division of Water Quality
0 2006
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
DWQ-WARO 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: Real Kiteboarding
Contact Person: Clayton E. Massey, P.E. Phone Number: [phone]
This worksheet applies to: Basin No. A
(as identified on plans)
Drainage Area: A
(from Form SWU-l01)
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
Newnan Corolla
20 inlhr or cffhr/sf (ciraeappropriate units)
3.5 fmSI (Seasonal High Water Table elevation)
3
inch
6204
c.f.
0.10
days
odd size ft. x _
6188 c.f.
5.5
fmsl
6.0
fmsl
6.2
fmsl
(1.5 inch event for SR waters, I inch event for others)
ft. = 1588 sq. ft. (bottom dimensions)
Basin odd size, area is calculated.
* Basin Volume = 895 c.f. storage
5293 c.f. Infiltration during storm event
Form SWU-103 Rev 3.99 Page 1 of 3

*j
lJL REQUIRED HEMS 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
«r*1 a. System is located 50 feet from class SA waters and 30 feet from other surface waters,
LE" �— b. System is located at least 100 feet from water supply wells.
G6» c- Bottom of system is at least 2 feet above the seasonal high water table.
LEM d. Bottom of the system is 3 feet above any bedrock or impervious soil horizon.
GElv--i e. System is not sited on or in fill material or DWQ approval has been obtained.
hl! A 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-0f-way.
CEM g. Drainage area for the device is less than 5 acres.
GZ`M h. Soils have a minimum hydraulic conductivity of 0.52 inches per hour and soils report is
attached.
CAM 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.
Gccun 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.
GrcM k. All side slopes stabilized with vegetated cover are no steeper than 3:1 (IL-V).
CAM 1. A pretreatment device such as a catch basin, grease trap, filter strip, grassed Swale or
sediment trap is provided.
Girt m. Bottoms of the device is covered with a layer of clean sand to an average depth of 4 inches or
dense vegetative cover is provided.
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).
N A o. Flow distribution mechanism within the basin is provided.
GErn p. A benchmark is provided to determine the sediment accumulation in the pretreatment device.
C f-T*n q. Runoff in excess of the design volume bypasses off -lime systems (bypass detail provided) -
GSM 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
ritm 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

t
�'

IV. INFII,TRATION 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 5 • rl 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 s stem or prior to any
changes to the system or responsible party.
Print Name and Title:
The legally responsible pa
resident of the subdivision
T-\)-<)
been sold and a
1, YrIA. % L - l K c3�c�\� _ _ -- , a Notary Public for the State of _ N .0 _ , County of
It •1 -- ^ do hereby certify that personally appeared before me this k
day of T. cXy4o and acknowledge the due execution of the forgoing infiltration basin maintenance requirements.
Witness my hand and official seal,
SEAL OF CIA SEALMy csmmissio
Notary public - Narth CarOJ4n
DARE COUNTY
JODY L. MIDGETT i
My Commission Expires i
Form SWU-103 Rev 3.99 Vase 3 of 3
expires

Permit No. �/'� 7 06 L- a 3
�io be provided by DWQJ
State of North Carolina
Department of Environment and Natural Resources
,r'�7,0E:CE:0 E:E, Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
JUN 2 0 2006
INFILTRATION BASIN SUPPLEMENT
DWQ-WARO 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. Real Kiteboarding__
Contact Person: ClLayton E. Massey, PP.E. Phone Number: [phone]
This worksheet applies to: Basin No. B in Drainage Area: B
(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 (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
Newhan / Corolla
20 in/hr or cf/hr/sf (circle appropriate units)
3.5 fMSI (Seasonal High Water Table elevation)
3.0 inch (1.5 inch event for SA waters, 1 inch event for others)
3845 c.f.
0.10 days
odd size ft. x ft. = 1002 sq. ft. (bottom dimensions)
3943 c.f. * *Basin Volume = 603 c.f storage
3340 c.f Infiltration during storm event
5.5
f nsl
6.0
" frnsl
6.2
frnsl
Form SWU-103 Rev 3.99 Page I of 3

r
i

#Z
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
5f7'�- LW a_ System is located 50 feet from class SA waters and 30 feet from other surface waters.
Ltirh b.
GE rh c.
C.G to d.
M rn e.
N fl f.
GS " g.
M M h.
CkM i.
Gs M
System is located at least 100 feet from water supply wells.
Bottom of system is at least 2 feet above the seasonal high water table.
Bottom of the system is 3 feet above any bedrock or impervious soil horizon.
System is not sited on or in fill material or DWQ approval has been obtained.
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.
Drainage area for the device is less than 5 acres.
Soils have a minimum hydraulic conductivity of 0.52 inches per hour and soils report is
attached.
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.
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.
U-M k. All side slopes stabilized with vegetated cover are no steeper than 3:1 (H:V).
C T L A pretreatment device such as a catch basin, grease trap, filter strip, grassed swale or
sediment trap is provided.
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.
01�rn 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).
N LA o. Flow distribution mechanism within the basin is provided -
UM p. A benchmark is provided to determine the sediment accumulation in the pretreatment device.
GEM q. Runoff in excess of the design volume bypasses off-line systems (bypass detail provided).
G7_ r 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.
GEM 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. ROILTRATION 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, reseed 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 an
changes to the system or responsible party. A.,)4 I�
Print Name d Title: s /�iGhir
Address:
Note: The legatly OGpdnn—sible arty uld 4at be a homeowners association unless more than 50% of the lots have been sold and a
resident of the subci viis n the president
I, MA,, } K Nq � . a Notary Public for the State of N County of
do hereby certify that Vn r +r,,n — - personally appeared before me this VI
day of _ �b .. and acknowledge the due execution of the forgoing infiltration basin maintenance requirements.
Witness my hand and official seal,
SEAL " ''.►. �-.'. �- -.'y commission expires
OFFICIAL SEAL 1
Nclaq Public - North Garollra
4, DARE COUNTY
JODY L. MIDGETT 4
My Commission Expires
Form SWU-10�..,r R$ t 9 �-�.r ,- -- Page 3 of 3

k

Ea
VARIANCE TO CHECKLIST ITEMS
SWU-103, PAGE 2 of
STORMWATER BASIN "B" (only)
May 19, 2006
Item a.
Depending on definition, a portion of Stormwater Basin "B" may be located within 50' of
a class of SA waters. In a previous permitted work efforts, the Owner cut in a boat basin
as the jet ski launch site for the kiteboarding facility. It is this boat basin which is within
the 50' of stormwater basin "B". The limits from the infiltration basin to the boat basin
are 30' as requested by Mr. Vinson via e-mail on May 11, 2006. The natural shoreline is
over 100' away from the stormwater management facility.

Permit No. V?D6 n & 'Z3
(to be provided by DWQ)
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
JUN 2 a 2006 STORMWATER MANAGEMENT PERMIT APPLICATION FORM
INFILTRATION BASIN SUPPLEMENT
DWQ_WA RQ Thisform may be photocopied far 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: Real Kiteboarding _ _._.......,.,_
Contact Person: Clayton E. Massey, P.E. Phone Number: [phone]
This worksheet applies to: Basin No. C in Drainage Area: C
(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
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
Newhan / Corolla
20 in/hr or cf/hr/sf (circle appropriate units)
3.5 fmSl (Seasonal High Water Table elevation)
3.0 inch (l.5 inch event for SA waters, I inch event for others)
1895 c.f.
0.06 days
odd size ft. x
2744 c.f.
5.5
finsl
5.6
fmsl
5.7
finsl
*Basin
ft. = 797 sq. ft. (bottom dimensions)
Volume = 87 c.f. storage
2744 c.f. Infiltration during storm event
Form SWU-103 Rev 3.99 Page I of 3

h13
M. 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
Cf m a. System is located 50 feet from class SA waters and 30 feet finm other surface waters.
Min b. Systems is located at least 100 feet from water supply wells.
C1m c. Bottom of system is at least 2 feet above the seasonal high water table.
ct!n d. Bottom of the system is 3 feet above any bedrock or impervious soil horizon.
Um e. System is not sited on or in fill material or DWQ approval has been obtained-
14
LA 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.
C1i M _ g. Drainage area for the device is less than 5 acres.
C.ri1 h. Soils have a minimum hydraulic conductivity of 0.52 inches per hour and soils report is
attached.
66M i. System captures and infiltrates the runoff from the fast 1.0 inch of rainfall (1.5 inch event for
areas draining to SA waters ). Design volume and infiltration calculations attached.
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.
6f-Vq k. All side slopes stabilized with vegetated cover are no steeper than 3:1 (H:V).
CEM 1. A pretreatment device such as a catch basin, grease trap, filter strip, grassed swale or
sediment trap is provided.
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.
G6 tn
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).
W A a.
Flow distribution mechanism within the basin is provided.
Cr*m p. A benchmark is provided to determine the sediment accumulation in the pretreatment device.
_ C�*-3 q. Runoff in excess of the design volume bypasses off-line systems (bypass detail provided).
CiErg 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.
OEM 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 shallbe 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 5- (P 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,
l 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 pri r toy
changes to the system or responsible party.
Print Name and Title:
AddrEss.ql-) _ � �C. y" � cJ�,J f l
Phone:.r- of - lJ
Note: Ae legally
resident of
be a homeowners association unless more than 50% of the lots have been sold and a
ed the president
a Notary Public for the State of County of
�- do hereby certify that - Y 5 .�O . �, n- personalty appeared before me this 1
day of J1j--'k-]k0 . and acknowledge the due execution of the forgoing infiltration basin maintenance requirements.
Witness my hand and official seal,v,..� 1 n>
SEAL 0FFICIA SEAL
SEAL 4 + Notary Public - North Carolina
�Y DARE COUNTY
JODY L. MIDGETT
My Commission Expires
Forrn SWU-103 Rev 3.99
commission expires Lka. P - rl
Page 3 of 3

Permit No. J W 7 96 0 (2-2-3 _
(to be provided by DWQ)
State of North Carolina
Department of Environment and Natural Resources
) v Division of Water Quality
'IN 2 D^2a66STORMWATER MANAGEMENT PERMIT APPLICATION FORM
D WQ-W, � ; � F ERGROUND INFILTRATION TRENCH SUPPLEMENT
M form may be photompied for use as an anginal
DWQ Stormwater Management Plan Review:
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.
1. PROJECT INFORMATION
Project Name
Contact Person: Rat
Phone Number. (ZG'L) 3 oS f G59 (_0
For projects with multiple infiltration systems, a supplement form must be completed for each system. This
worksheet applies to: Trench PJA51�u s� in Drainage Area D
(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 TypeCottv114
Infiltration Rate 20 0�0or cfThr/sf (circle appropriate units)
SHWT Elevation 3. 5 fmsl (Seasonal High Water Table elevation)
Trench Design Parameters
Design Volume 4 3 Gob c.f.
Design Storm O inch event (L 5 inch event for SA waters, I inch event for others)
Drawdown Time days
Perforated Pipe Size u I A inch diameter
Perforated Pipe Length W i A ft.
No. Observation Wells NIA (may be required on a case -by -case basis)
Stone Type (if used) it 51 fWPsq G]b I WR..A f rIA)
Stone Void Ratio 0.30
Trench Elevations (in feet -mean sea level)
Bottom Elevation 5.50 fmsl
Storage/Overflow Elevation 5. 9 finsl
Form SWU-107 Rev 3.99 Page 1 of 4

Trench Dimensions
Height q. s (OV &
Width i�2` fL
M. REQUII" ITEMS C ECK IST
Length 120 ft.
Volume Provided 5 G G, (b1 M fL
551 y33a 14, i1fp^1::30r,
12.y-7 CC, S36nAGE (w! 30% vnid5)
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 Suction: 15
A NCAC 2H .1008.
butial in the space provided to indicate that the following design requirements have been met and supporting
documentation is. attached. If the applicant has designate4 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 30
_ Cl to a. System is located 56 feet from class SA waters and 30 feet from other surface waters- � �,
G b. System is located at least 100 feet from water supply wells. �'
CAW c. Bottom of system is at least 2 feet above the seasonal high water table.
GfK+ - -- d. Bottom of the system is 3 feet above any bedrock or impervious soil horizon.
01A e. Off-line system, runoff in excess of the design volume bypasses the system (bypass detail
provided).
r.re to £ System is designed to draw down the design storage volume to the proposed bottoms
elevation under'seasonal high water conditions within five days based upon infiltration
through the bottom only (a hydrogeologic evaluation may be required).
LEM g. Soils have a minimum hydraulic conductivity of 0.52 inches per hour_
C. IA h. System is not sited on or in fill material or DWQ approval has been obtained. (CZEw. SW16 f } it
GT r+ i. Plans erasure 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.
ctvn 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.
4 1 A k. System is located in a recorded drainage casement for the purposes of operation and
maintenance and has recorded access easements to the neatest public right-of-way.
ir. ►•► 1. System captures and infiltrates the runoff from time fast 1.0 inch of rainfall (1.5 inch event
for areas draining to SA waters ). C 3" d C5 ul sib i .Y"
CAS►h m. Drainage area for the device is less th 5 acres. VrA _
C E h'm n. A pretreatment device ( filter strip, grassFeed �swille r sediment trap, etc.) is provided. A s
CV. M o. 'Trench bottom is covered with a layer of clean sand to an average depth of 4 inches.
_ - Gti+n-- P. Sides of the infiltration trench are lined with geotextile fabric. (3,%hG WiLAP Fqe4
(Awn q. Rock used is free of fines (washed stone) and has a large void ratio. ( IV r5-1
CA vn _ _- r. Side to bottom area ratio is less than 4:1.
Form SWU407 Rev 3.99 Page 2 of 4

A s. Observation well(s) are provided (case -by -case basis).
LeNI t. Vegetated filter is provided for overflow (50 feet for SA waters, 30 feet for other waters)
and detail is shown on plans.
_N IA u. A benchmark for checking sediment accumulation is provided.
IV. UNDERGROUND INFILTRATION TRENCH OPERATION AND MAINTENANCE AGREEMENT
1. 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 ovcr-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.
b. 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 N A , the accumulated sediment shall be removed
from the system.
Form SWU-l07 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.
Ian .T t. L l t ia� ut�- - --
Address: T.0 • -1�b
Phone: ���� �7X
Note.' The legally responsii le party should not be a homeowners association unless more than 50•0 of the lots have been sold and a
resident of the subdivision has been named the president.
K6L County of
personally appeared before me this L
day of Tu 6/ e - 7 2,00 Ld and acknowledge the due execution of the forgoing infiltration basin maintenance
requirements. Witness my hand and official seal,
i CON-,
OEi=1ClALSEALNotary Public -North CarolinaDARE COUNTY
CHERYL LYNN PEELE y
MY Commission Expires
SEAL My commission expires
Form SWU-107 Rev 3.99 Page 4 of 4
wA^ Ion win Atll _