SW7060313_CURRENT PERMIT_20200408

ROY COOPER
Governor
MICHAEL S. REGAN
5eererary
BRIAN WRENN
Acring Director
RAVA Developments, LLC
Attention: Raju Uppalapati
P.O. Box 3009
Kitty Hawk, NC 27949
NORTH CAROLINA
Environmental Quality
April 8, 2020
Subject: Stormwater Permit No. SW7060313 Renewal
Sampat Professional Center
High Density Stormwater Project
Currituck County
Dear Raju Uppalapati:
The Washington Regional Office received a complete Stormwater Management Permit
Renewal Application for Sampat Professional Center on March 20, 2020. Staff review
of the submittal has determined that the permit can be renewed. We are forwarding
Permit No. SW7060313, dated April 8, 2020, for the construction and operation of the
subject project.
This permit shall be effective from the date of issuance until April 7, 2028, and shall be
subject to the conditions and limitations as specified therein. Please pay special
attention to the Operation and Maintenance requirements in this permit. Failure to
establish an adequate system for operation and maintenance of the stormwater
management system will result in future compliance problems.
If any parts, requirements, or limitations contained in this permit are unacceptable, you
have the right to request an adjudicatory hearing upon written request within thirty (30)
days following receipt of this permit. This request must be in the form of a written petition,
conforming to Chapter 150B of the North Carolina General Statutes, and filed with the
Office of Administrative Hearings, 6714 Mail Service Center, Raleigh, NC 27699-6714.
Unless such demands are made this permit shall be final and binding.
If you have any questions, or need additional information concerning this matter, please
contact me at [phone].
Sincerely,
Roger K. Thorpe
Environmental Engineer
cc: Landmark Engineering & Environmental, P.C.
North Carolir,a Department or Environmertal Quality i Division of Energy.'Wnerai and Lard Rescu-ces
1P �ashingtor. Rcgianal Office i `)-43 %Vasl�irgtan square `tali ! liVashington. North Carc Eina2I889
U­1-0 'T E-'-W 0-11 !�7

STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENTAL QUALITY
DIVISION OF ENERGY, MINERAL, AND LAND RESOURCES
STATE STORMWATER MANAGEMENT PERMIT
HIGH - DENSITY DEVELOPMENT
In accordance with the provisions of Article 21 of Chapter 143, General Statutes of
North Carolina as amended, and other applicable Laws, Rules, and Regulations
PERMISSION IS HEREBY GRANTED TO
RAVA Developments, LLC
Sampat Professional Center
Located at 8460 Caratoke HWY, Powells Point, NC
Currituck County
FOR THE
construction, operation and maintenance of an infiltration basin in compliance with the
provisions of 15A NCAC 2H .1000 (hereafter referred to as the "stormwater rules') and
the approved stormwater management plans and specifications and other supporting
data as attached and on file with and approved by the Division of Energy, Mineral, and
Land Resources (Division) and considered a part of this permit.
This permit shall be effective from the date of issuance until April 7, 2028 and shall be
subject to the following specified conditions and limitations:
I. DESIGN STANDARDS
This permit is effective only with respect to the nature and volume of stormwater
described in the application and other supporting data.
2. This stormwater system has been approved for the management of stormwater
runoff as described in Section 1.6 of this permit. The stormwater control has been
designed to handle the runoff from 106,868 square feet of impervious area.
3. The tract will be limited to the amount of built -upon area indicated in Section 1.6
of this permit, and per approved plans.

4. All stormwater collection and treatment systems must be located in either
dedicated common areas or recorded easements. The final plats for the project
will be recorded showing all such required easements, in accordance with the
approved plans.
5. The runoff from all built -upon area within the permitted drainage area of this
project must be directed into the permitted stormwater control system.
6. The following design criteria have been provided in the infiltration basin and must
be maintained at design condition:
a. Site Area, acres: 3.91
b. Drainage Area to Basin, ft2: 170,467
C. Total Impervious Surfaces, ft2: 106,868
d. Design Storm, inches: 1
e. Basins Depth, feet: 1.75
f. Bottom Elevation, FMSL: 8.00
g. Bottom Surface Area, ft2: 6,356
h. Bypass Overflow Elevation, FMSL: 9.75
i. Permitted Storage Volume, ft3: 24,581
j. . Type of Soil: Conetoe loamy sands
k. Expected Infiltration Rate, inlhr: 6.0
I. Seasonal High Water Table, FMSL: 6.00
M. Receiving Stream/River Basin: UT Albemarle Sound 1 Pasquotank
n. Stream Index Number: 30
o. Classification of Water Body: "SB"
II. SCHEDULE OF COMPLIANCE
1. The stormwater management system shall be constructed in its entirety,
vegetated and operational for its intended use prior to the construction of any
built -upon surface.
2. During construction, erosion shall be kept to a minimum and any eroded areas of
the system will be repaired immediately.

3. The permittee shall at all times provide the operation and maintenance
necessary to assure the permitted stormwater system functions at optimum
efficiency. The approved Operation and Maintenance Plan 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, infiltration media, flow -
spreader, catch basins, piping and vegetated filter.
g. A clear access path to the bypass structure must be available at all times.
4. Records of maintenance activities must be kept and made available upon
request to authorized personnel of the Division. The records will indicate the
date, activity, name of person performing the work and what actions were taken.
5. The facilities shall be constructed as shown on the approved plans. This permit
shall become voidable unless the facilities are constructed in accordance with the
conditions of this permit, the approved plans and specifications, and other
supporting data.
6. Upon completion of construction, prior to issuance of a Certificate of Occupancy,
and prior to operation of this permitted facility, a certification must be received
from an appropriate designer for the system installed certifying that the permitted
facility has been installed in accordance with this permit, the approved plans and
specifications, and other supporting documentation. Any deviations from the
approved plans and specifications must be noted on the Certification. A
modification may be required for those deviations.
7. The stormwater systems shall not be used as Erosion Control devices. They
must be kept off line and free from sediment until the project is complete and the
entire site has been stabilized.
8. Access to the stormwater facilities shall be maintained via appropriate
easements at all times.
9. The permittee shall submit to the Director and shall have received approval for
revised plans, specifications, 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 April 7, 2028.
Application for permit renewal shall be submitted 180 days prior to the expiration
date of this permit and must be accompanied by the processing fee.
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, accompanied by a
completed name/ownership change form, documentation from the parties
involved, and other supporting materials as may be appropriate. The approval of
this request will be considered on its merits and may or may not be approved.
The permittee is responsible for compliance with all permit conditions until such
time as the Division approves the transfer request.
2. Failure to abide by the conditions and limitations contained in this permit may
subject the Permittee to enforcement action by the Division, in accordance with
North Carolina General Statute 143-215.6A to 143-215.6C.
3. The issuance of this permit does not preclude the Permittee from complying with
any and all statutes, rules, regulations, or ordinances, which may be imposed by
other government agencies (local, state, and federal) having jurisdiction.
4. In the event that the facilities fail to perform satisfactorily, including the creation of
nuisance conditions, the Permittee shall take immediate corrective action,
including those as may be required by this Division, such as the construction of
additional or replacement stormwater management systems.

5. The permittee grants DEQ Staff permission to enter the property during normal
business hours for the purpose of inspecting all components of the permitted
stormwater management facility.
6. The permit may be modified, revoked and reissued or terminated for cause. The
filing of a request for a permit modification, revocation and reissuance or
termination does not stay any permit condition.
7. Unless specified elsewhere, permanent seeding requirements for the stormwater
control must follow the guidelines established in the North Carolina Erosion and
Sediment Control Planning and Design Manual.
8. Approved plans and specifications for this project are incorporated by reference
and are enforceable parts of the permit.
9. The permittee shall notify the Division of any name, ownership or mailing address
changes within 30 days.
Permit issued this the 8' day of April 2020.
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
for
Brian Wrenn, Acting Director
Division of Energy, Mineral, and Land Resources
By Authority of the Environmental Management Commission
'�i � f�► [4Ti il:�'�y'�'i'L�I��IK�i K3

DEMLR USE ONLY
Date Re eived
Fee Paid Permit Number
03 za zo
1 SbS SW 06 03 /3
iPe n e F✓��
NC DEQ Division of Energy, Mineral and Land Resources
STATE STORMWATER:
PERMIT RENEWAL APPLICATION FORM ,Qrmm,,,� it/+p7icP
s��fi q/i9�i9
in accordance with 15A NCAC 2H.1045(3), the current permit holder shall renew their high density permit 180 days
prior to its expiration. Renewed permits are valid for a period of 8 years per Session Law 2011-398 (SB 781)
Section 60. (c). This application form is for permit renewals only.
A. PROJECT INFORMATION
f1712a 2-0+ Y�t !/Y'+ r
1. State Stormwater Permit Number: S w
2. Project name: SA NI ```r- a ESS JG�vAf C�^rT�
3. Project street address: _ 9 't (P o C.P)P R-Co Ki< 14 t G 4 W AY
City. '1>6WEQ_5 Po, QT County: CUJZRI_ I C lam_ ZIP: 449 (v(4
4. What, if any, changes have been made to the project as permitted? SCE AZAcAEf)
r-,SARaA-ty5
If the project has changed from the original approved plans, please complete SWU-101 for a Major
Modification or Minor Modification Application form available at: https://deg,nc.aovlaboutldivisionslenergy-
mineral-land-resourcesienergy-mineral-land-rules/stormwater-programlpost-construction.
B. PERMITTEE INFORMATION
If changes to the permittee or project name have been made, please complete either the Permit Update form
or the Permit Transfer form available at: https://deg.nc.gov/about/divisions/energy-mineral-land-
resources/ever -mineral-1and -ruleslstormwater- ro ram l ost-construction. State Stormwater Permits do not
automatically transfer with the sate of the property.
1. Current Permit Holders Company Name/Organization: RA4A b*C0EL,-4--)lVEN_r:s .; L.LC-
2. Signing Official's Name: -AZ U_ U: PAc x-r1
3. Signing Official's Title: YAl m R
4. 'Mailing Address: ice. d, �o� 30o`l
City: _ 1<tTT�f-���n1K State: LC ZIP : X49Y9
5. Street Address: CARAToKE- 64�61HOAq , fuI-r - +0
City: T Pbwtu-s }Po, ntT _ _ _State: N C- ZIP: ;39 (0CP
6. Phone: (_'"Z) ao -3yD Email: VI 10.yg(ap@ ofpQjanar'+ • Co,A
Stormwater Permit Renewal Form Page 1 of 3 May 11, 2018

C. SUBMITTAL REQUIREMENTS
Submit the application package to the appropriate DEMLR Regional Office (Coastal, SA Waters) or DEMLR
Central Office (Urbanizing Areas Ph 2, USMP, Non -Coastal HQW/ORW}. Only applications packages that
include all required items listed below will be accepted and reviewed.
Initial each item below to indicate that the required information is provided in the application package:
Q 1. A permit application processing fee of $505.00 payable to NCDEQ.
�\J 2. One original signed hard copy and one electronic copy of this completed form. The signing official
named on this application to represent the current permittee must meet one of the following:
a. Corporation -- a principle executive officer of at least the level of vice-president;
b. Limited Liability Company (LLC) — a manager or company official as those terms are defined
in G.S. 57D "North Carolina Limited Liability Company Act;"
c. Public Entity — a principal executive officer, ranking official, or other duly authorized employee;
d. Partnership or limited partnership — the general partner;
e. Sole proprietor; or
f. Letter of authorization signed by one of the signatories noted in a — e above authorizing the
signature of another entity.
'J\PJ 3. One hard copy and one electronic copy of recorded documents required by the original permit that
have not yet been received by DEMLR, including: deed restrictions, protective covenants,
condominium/planned community declaration and easements. If the project has been built, include
documentation that the maximum BUA per lot or maximum total BUA has not been exceeded. If
the project has not been built, include a signed agreement that the final recorded deed restrictions
and protective covenants will be submitted at a later date.
4. O&M Agreements, Please select one:
❑ I have a copy of the current recorded O&M Agreement for all SCMs, and I will continue to
keep this on file with the permit; or
I do not have a copy of the current recorded O&M Agreement for all SCMs and am
requesting a copy be sent to me. I agree to keep this on file with the permit.
J5. Designer Certifications, Please select one:
JK A copy of the certification(s) confirming that the project was built in accordance with the
approved plans have been previously provided to the Division; or
❑ A copy of the certifications) confirming that the project was built in accordance with the
approved plans are enclosed; or
❑ The project has not yet been built.
J B. [IF APPLICABLE] If the project has been built, one original hard copy and one electronic copy of a
signed, sealed, and dated letter from a licensed professional stating that the SCMs have been
inspected, and that they have been built and maintained in accordance with the permit.
7. [IF APPLICABLE] When the permittee is a corporation or a limited liability corporation (LLC):
Provide one hard copy and one electronic copy of documentation from the NC Secretary of State,
or other official documentation, which supports the titles and positions held by the persons listed in
Section C.2 per 15A NCAC 2H. 1043(3)(b).
https:llwww.sosnc.govlonline_serviceslsearchlby title/ _Business _Registration
Stormwater Permit Renewal Application Form Page 2 of 3 May 11, 2018

D. PERMITTEE'S CERTIFICATION
RAXL,\ U- VQ PA LAPA'Tt , the person legally responsible for the permit, certify that I have
a copy of the Permit and O&M Agreement on site (or I will obtain a copy and it will be kept on site), that I am
responsible for the performance of the maintenance procedures, and the site has been and will be maintained
according to the O&M Agreement and approved plans. I agree to notify DEMLR of any problems with the SCMs
or built -upon area and to submit the proper forms to modify or transfer the permit prior to any changes to the
project, SCMs, or ownership. All information provided on this permit renewal application is, to the best of my
knowledge, correct and complete.
Signature: Date: Z 2-4
NOTARIZATION:
a Notary Public for the State of
do hereby certify
�1
that _ Rg)v& U Ui APa I a 0" personally appeared before me
this the � day of RkrwOrV 20_dl_, and acknowledge the due
execution of the forgoing instrument. Witness my ha d and official seal,
Kimb
(Notary Sea) N
Currit
Notary Signature:
My commission expi s .
County of C(4ra+U
ly D Carroll
W Pubf��c�
;-CoU0r�'vi NC
An In d
Stormwater Permit Renewal Application Form Page 3 of 3 May 11, 2018

i

LANDMARK ENGINEERING & ENVIRONMENTAL, P.C.
PHONE: [phone]
EMAIL: [e-mail] P.O. BOX 1190
KITTY HAWK, NC 27949
February 21, 2020
Mr. Bill Moore
NCDE&NR
Division of Water Quality
943 Washington Square Mall
Washington, NC 27889
Re: Sampat Professional Center
Poplar Branch Township, Currituck County, NC
Existing Permit # SW7060313
Stormwater Management Plan Permit Renewal Application Package
Dear Mr. Moore:
On Behalf of Rava Developments,LLC, a division of Rava Group, LLC„ Landmark Engineering &
Environmental, P.C. submits for your review and approval, a Stormwater Management Plan Permit
Renewal package containing the following:
1.) Check payable to NCDE&NR in the amount of $505.00.
2.) An original and one electronic copy of a State Stormwater: Permit Renewal Application Form.
3.) An original and one electronic copy of the Stormwater Management Plan Permit Renewal
Narrative.
4.) An original and one electronic copy of documentation from NC Secretary of State for Rava
Developments, LLC.
5.) An original and one electronic copy of an annotated print from the Currituck County GIS
showing an aerial photograph of the site from 2016.
Thank you for your time and attention to this matter. If you have any questions or require additional
information please contact me at [phone].
Respectfully submitted,
Landmark Engineering & Environmental, P.C.
Victor E. White, P.E.
cc: Mr. Raju Uppalapati - Rava .Developments, LLC

LANDMARK ENGINEERING & ENVIRONMENTAL, P.C.
PHONE':252.205.6460 P.O. Box 1190
EMAIL: [e-mail] KITTY iiAWK, NC 27949
Sampat Professional Center
Stormwater Management Plan
Permit Renewal
Narrative
Feb 19, 2020
S,s��etirrrrr�rir��a
SEAL r'
025 83410
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The above referenced project is an existing development of an office commercial park, with associated
parking and infrastructure. The site is located off of US Highway 158 in Point Harbor, Currituck
County, North Carolina. Stormwater management infrastructure as well as asphalt pavement and curbing
was constructed and designed as permitted. Three of the office buildings and associated concrete
sidewalks shown on the approved plans have not yet been constructed. These buildings are referenced
and shown on the approved plans as:
1.) The Rava Building (#100), which is the southernmost building shown on the plans.
2.) The Khoury Building (#500) which in one of the two western most buildings.
3.) The Simmons Building (4600) which is the other western most building.
The Simmons building has only an existing slab, poured in 2008 that is much
smaller than what was shown on the approved plan (Approx. 42 ft by 36 ft). No
It. further construction has occurred since that time.
The only other minor change from the approved plans was in the construction of Building 4300 which
incorporated:
1.) A covered porch over the front sidewalk
2.) A canopy over the drive -through, and drive through widened ten feet in width to twenty two
feet to accommodate dual lanes.
3.) Additional concrete and canopy for an ATM on the south side of the building.
Existing impervious coverage at the site is 101,640 square feet, less than the permitted 106,983 square
feet. If Buildings # 100, #500 and #600 are constructed along with their associated concrete sidewalks,
total impervious coverage will be 106,868 square feet.
The stormwater management plan was constructed as approved. A single drainage area which is almost
surrounded by the proposed infiltration swales/basins. Stormwater runoff from proposed impervious
surfaces is conveyed to the stormwater retention system via a combination of sheet flow, stormwater
catch basins/pipe and concrete flumes. The existing swale/basin system also incorporates pipe, providing
hydraulic connections which provide equalization of the basins. The entire stormwater management
system still provides in excess of the ten year two hour storm, and sediment accumulation since its
completion and stabilization is negligible. The existing grassy overflow spillway into the NCDOT
highway drainage system is in good condition, with no evidence observed that an overflow condition has
ever been reached. Infiltration rates are still excellent as the soils present at the site (Conetoe Loamy
Sand) provide very high rates of infiltration, and the accumulation of fines which can slow down
infiltration was not observed to be present in quantities to affect infiltration rates.

• File an Annual Report/Amend an Annual Report • Upload a PDF Filing • Order a Document Online -
Add Entity to My Email Notification List • View Filings • Print a Pre -Populated Annual Report form • Print
an Amended a Annual Report form
Limited Liability Company
Legal Name
RAVA Developments, LLC
Information
Sosld: 0822078
Status: Current -Active
Annual Report Status: Current
Citizenship: Domestic
Date Formed: 1 /11 /2006
m G� r4s�°u''S 'Qcf.6e%,, G VuP I LC
g, s
Registered Agent: Uppalapati, Raju V.
Addresses
Reg Office Reg Mailing Principal Office
1036 Creek road 1036 Creek road 8452 Caratoke Hwy Suite 704
Kitty Hawk, NC 27949 Kitty Hawk, NC 27949 Powells Point, NC 27966
Mailing
P O Box 3009
Kitty Hawk, NC 27949-3009
Company Officials
All LLCs are managed by their managers pursuant to N.C.G.S. 57D-3-20.
Manager
Rava Group, L.L.C.
P.Q. Box 3009
Kitty Hawk NC 27949

Currituck County GIS online Mapping
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Currituck County GIS This map should be used for general reference purposes only.
[phone] Currituck County assumes no legal liability for the information
www.co.currituck.nc.uslGeographic-Information-Services.cfm shown on this map.

Permit No. 45W 7c> o 3) 3
(to be provided by DWQ}
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality RECEE ED
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
MAR 2 8 2006
INFILTRATION BASIN SUPPLEMENT pp
This form may be photocopied for use as an original D�A� Q-yft!ll ARO
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 : SAMPAN P V,o V'555 igi4A L CEN F9
Contact Person: \JiCtgR E, WiAlTti P�E, Phone Number: (%.5L) 1S 4
This worksheet applies to: Basin No. I _ in Drainage Area I
(as identified on plans) (from Form SWU-101)
Il. DESIGN INFORMATION - Attach supporting calculations/documentation. The soils report must be
based upon an actual field investigation and soil borings. County soil maps are not an acceptable source
of soils information. All elevations shall be in feet mean sea level (fmsl).
Soils Report Summary
Soil Type C+nA &Aekoe JG6MAJ SVIIJ
Infiltration Rate ( — 0-0 Ihr r cf/hr/sf (circle appropriate units)
SHWT Elevation 2. ) fmSl (Seasonal High Water Table elevation)
Basin Design Parameters
Design Storm inch (1.5 inch event for SA waters, 1 inch event for others)
Design Volume c.f.
Drawdown Time o1 days
Basin Dimensions
��L�R
Basin Size I 145,0 ft. x 4.5 ft. sq. f). (bottom dimensions)
Basin Volume Provided aL4 S� s c.f.
Basin Elevations
Bottom Elevation U fmsl
Storage Elevation 15 fmsl
Top Elevation o o fmsl
Form SWU-103 Rev 3.99 Page I of 3

. I11. REQUIRED ITEMS CHECKLIST
The following checklist outlines design requirements per the Stormwater Best Management Practices Manual
(N.C. Department of Environment, Health and Natural Resources, February 1999) and Administrative Code
Section: 15 A NCAC 2H .1008,
Initial in the space provided to indicate that the following design requirements have been met and supporting
documentation is attached. If the applicant has designated an agent in the Stormwater Management Permit
Application Form, the agent may initial below. Attach justification if a requirement has not been met.
Applicants Initials
VCW a. System is located 50 feet from class SA waters and 30 feet from other surface waters.
V6LJ b. System is located at least 100 feet from water supply wells.
_J60 _ c. Bottom of system is at least 2 feet above the seasonal high water table.
CW d. Bottom of the system is 3 feet above any bedrock or impervious soil horizon.
vfo e. System is not sited on or in fill material or DWQ approval has been obtained.
1F_43 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.
VtL-3 g.
VEW h.
VEtJ j
VEw k.
vew
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. it
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.
All side slopes stabilized with vegetated cover are no steeper than 3:1 (H:V).
1. A pretreatment device such as a catch basin, grease trap, filter strip, grassed swale or
sediment trap is provided.
VEJ _ 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.
VC" 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).
ViFo o. Flow distribution mechanism within the basin is provided.
VEw p. A benchmark is provided to determine the sediment accumulation in the pretreatment device.
w
NIA Lk � q. Runoff in excess of the design volume bypasses off-line systems (bypass detail provided).
VE a 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.
�90 _ _ 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-l03 Rev 3.99 Page 2 of 3

IV. INFILTRATION BASIN OPERATION AND MAINTENANCE AGREEMENT
1. After every runoff producing rainfall event and at least monthly inspect the infiltration system for erosion,
trash accumulation, vegetative cover, and general condition.
2. Repair eroded areas immediately, re -seed as necessary to maintain adequate vegetative cover, mow
vegetated cover to maintain a maximum height of six inches, and remove trash as needed.
3_ After every runoff producing rainfall event and at least monthly inspect the bypass, inflow and overflow
structures for blockage and deterioration. Remove any blockage and repair the structure to approved design
specifications.
4. Remove accumulated sediment from the pretreatment system and infiltration basin annually or when depth
in the pretreatment unit is reduced to 75% of the original design depth. The system shall be restored to the
original design depth without over -excavating- Over -excavating may cause the required water table
separation to be reduced and may compromise the ability of the system to perform as designed. Removed
sediment shall be disposed of in an appropriate manner and shall not be handled in a manner that will
adversely impact water quality (i.e. stockpiling near a stormwater treatment device or stream, etc.).
A benchmark shall be established in the pretreatment unit. The benchmark will document the original
design depth so that accurate sediment accumulation readings can be taken. The measuring device used to
determine the depth at the benchmark shall be such that it will give an accurate depth reading and not
readily penetrate into accumulated sediments.
When the design depth reads 6.5 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 1 am responsible for the performance of the five
maintenance procedures listed above. I agree to notify DWQ of any problems with the system or prior to any
changes to the system or responsible party.
Print Name and Title: \ l UAYASRc e U PPA Lr r AT
Address: So, ?�,6C 3009 KI-VTV _ _W A W c r j c zg99 C7-
Phone: 5 1 3U5 C��-o - Date: 7� �) 06
Signature:
vV Note: The legally responsible party should not be a homeowners association unless more than SO% of the lots have been sold and a
resident of the subdivision has been named the president.
T . 5/Y! /7W , a Notary Public for the State of r ( rP0/ t,✓fl, County of
T)!92?do hereby certify that V 1'T)4 Yi95 eff- U 10 1,19Pt4T7 personally appeared before me this
day ofT uyp (Ly Zoow , and ackn e-due-e cution of the forgoing infiltration basin maintenance requirements.
Witness,my. and and'officiaf•seal,
SEf1L •I �r -� = My commission expires a4�2Lti a 200
fir•.. �� � ;:'�
Form SW,U-10,Tl*) '��--_ '49 Page 3 of 3
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