SW8020826_CURRENT PERMIT_20030609

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
DOC TYPE
� CURRENT PERMIT
❑ APPROVED PLANS
❑ HISTORICAL FILE
❑ COMPLIANCE EVALUATION INSPECTION
DOC DATE
�UU?2xl)(¢C31
YYYYMMDD

* ��OF �ArFAQG Michael E. Easley, Governor
y William G. Ross Jr., Secretary
North Carolina Department of Environment and Natural Resources
=i
Alan W. Klimek, P.E.,Director
Division of Water Quality
June 9, 2003
Mr. Donnie F. King, Jr.
110 Wintergreen Road
Wilmington, NC 28409
Subject: Permit No. SW8 020826
Donnie F. King Property
(Lot 22R Scotts Hill Bluff)
High Density Stormwater Project
Pender County
Dear Mr. King:
The Wilmington Regional Office received a complete Stormwater Management Permit
Application for Donnie F. King Property (Lot 22R Scotts Hill Bluff), on May 30, 2003.
Staff review of the plans and specifications has determined that the project, as
proposed, will comply with the Stormwater Regulations set forth in Title 15A NCAC
2H.1000. We are forwarding Permit No. SW8 020826 dated June 9, 2003, for the
construction of Donnie F. King Property (Lot 22R Scotts Hill Bluff).
This permit shall be effective from the date of issuance until June 9, 2013, and shall be
subject to the conditions and limitations as specified therein. Please pay special
attention to the Operation and Maintenance requirements in this permit. Failure to
establish an adequate system for operation and maintenance of the stormwater
management system will result in future compliance problems.
If any parts, requirements, or limitations contained in this permit are unacceptable, you
have the right to request an adjudicatory hearing upon written request within thirty (30)
days following receipt of this permit. This request must be in the form of a written
petition, conforming to Chapter 150E 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 Linda Lewis, or me at [phone].
Sincerely, /
Rick Shiver
Water Quality Regional Supervisor
RSSlarl: S:1WQSISTORMWATIPERMIT1020826.jun03
cc: Doug Haggett, P.E.
Pender County Building Inspections
Division of Coastal Management
Linda Lewis
Wilmington Regional Office
Central Files
N. C. Division of Water Quality 127 Cardinal Drive Extension [phone] Customer Service 0A
Wilmington Regional Office Wilmington, NC 28405 [phone] Fax [phone] NCDENR

State Stormwater Management Systems
Permit No. SWS 020826,
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
Donnie F. King, Jr.
Donnie F. King Property (Lot 22R Scotts Hill Bluff]
Pender County
FOR THE
construction, operation and maintenance of an infiltration basin in compliance with the
provisions of 15A NCAC 2H A 000 (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 June 9, 2013, and shall be
subject to the following specified conditions and limitations:
I. DESIGN STANDARDS
1. This permit is effective only with respect to the nature and volume of stormwater
described in the application and other supporting data. Collection piping was
added to the subdivision in violation of the low density permit, therefore, this high
density permit for Lot 22R is being issued to treat the collected runoff. The overall
subdivision must maintain compliance with the low density permit requirements
of SW8 950112.
2. This stormwater system has been approved for the management of stormwater
runoff as described on page 3 of this permit, the Project Data Sheet. The
stormwater control has been designed to handle the runoff from 65,464 square
feet of impervious area. The infiltration basin must be operated with a 50'
vegetated filter.
3. The tract will be limited to the amount of built -upon area indicated on page 3 of
this permit, and per approved plans.
4. -All stormwater collection and treatment systems must be located in either
dedicated common areas or recorded easements. The final plats for the project
will be recorded showing all such required -easements, in accordance with the
approved plans.
5. The runoff from all built -upon area within the permitted drainage area of this
project must be directed into the permitted stormwater control system.
2

State Stormxvater Management Systems
Permit No. SWS 020826
DIVISION OF WATER QUALITY
PROJECT DESIGN DATA SHEET
Project Name:
Donnie F. King Property
(Lot 22R Scotts Hill Bluff)
Permit Number:
SW8 020826
Location:
Pender County
Applicant:
Mr. Donnie F. King, Jr.
Mailing Address:
110 Wintergreen Road
Wilmington, NC 28409
Application Date:
May 30, 2003
Receiving Stream 1 River Basin:
Futch Creek 1 Cape Fear
Index #:
CPF24 18-87-19
Classification of Water Body:
"SA"
Drainage Area, acres:
5.44
Onsite:
1.05
Offsite:
4.39
Total Impervious Surfaces, ft5:
65,464
Lot 22R, ft2:
8,894
Offsite, ft2:
56,570
Basin Depth, feet:
3.3
TSS removal efficiency:
85%,(a 50' vegetated filter is required)
Bottom Elevation, FMSL:
4.00
Surface Area provided at bottom, ft2:
1,520
Permitted Storage Volume, ft3:
8,897
Temporary Storage Elevation, FMSL:
7.30
Controlling Orifice:
bypass pipe at 7.30
Type of Soil:
Autryville
Expected Infiltration Rate:
6 inches per hour
Seasonal high WaterTAble:
1.8 FMSL
Time to draw down:
11.7 hours (must be within 5 days)
3

II. SCHEDULE OF COMPLIANCE
The stormwater management system shall be constructed in it's 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 outlet structure, orifice device, flow
spreader, catch basins and piping.
g. Access to the outlet 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. Decorative spray fountains will not be allowed in the stormwater treatment
system.
6. 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.
7. 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.
8. If the stormwater system was used as an Erosion Control device, it must be
restored to design condition prior to operation as a stormwater treatment device,
and prior to occupancy of the facility.
9. The permittee shall submit final site layout and grading plans for any permitted
future areas shown on the approved plans, prior to construction. If the proposed
BUA exceeds the amount permitted under this permit, a modification to the
permit must be submitted and approved prior to construction.

State. Stormwater Management Systems
Permit No. SW8 020826
10. 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, or sale 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.
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. Prior to the sale or lease of any portion of the property, the permittee shall notify
DWQ and provide the name, mailing address and phone number of the
purchaser or lessee. If access to the stormwater facilities will be restricted by the
sale or lease of any portion of the property, then an access/maintenance
easement to the stormwater facilities shall be granted in favor of the permittee.
13. The permittee must maintain compliance with the proposed built -upon area and
ensure that the runoff from all the built -upon is directed into the permitted system.
14. 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.
15. The permittee must maintain the current permitted drainage area. No additional
runoff from outside of the permitted drainage area boundary may enter the
permitted stormwater facilities without first applying for and receiving a permit
modification.
111. GENERAL CONDITIONS
This permit is not transferable except after notice to and approval by the Director.
In the event there is a desire for the facilities to change ownership, or there is a
name change of the Permittee, a formal permit transfer request must be
submitted to the Division of Water Quality accompanied by an application fee,
documentation from the parties involved, and other supporting materials as may
be appropriate. The approval of this request will be considered on its merits and
may or may not be approved. The permittee is responsible for compliance with all
permit conditions until such time as the Division approves the transfer request.
5

State Stormwater Management Systems,
Permit No. SW8 020826
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) which have jurisdiction.
4. In the event that the facilities fail to perform satisfactorily, including the creation of
nuisance conditions, the Permittee shall take immediate corrective action,
including those as may be required by this Division, such as the construction of
additional or replacement stormwater management systems.
5. The permittee grants DENR Staff permission to enter the property during normal
business,hours for the purpose of inspecting all components of the permitted
stormwater management facility.
6. The permit may be modified, revoked and reissued or terminated for cause. The
filing of a request for a permit modification, revocation and reissuance or
termination does not stay any permit condition.
7. Unless specified elsewhere, permanent seeding requirements for the stormwater
control must follow the guidelines established in the North Carolina Erosion and
Sediment Control Planning and Design Manual.
8. Approved plans and specifications for this project are incorporated by reference
and are enforceable parts of the permit.
9. The permittee shall notify the Division any name, ownership or mailing address
changes within 30 days.
Permit issued this the 9th day of June, 2003.
NORTH CAROLINA ENVIRONMENTAL_ MANAGEMENT COMMISSION
Division of Water Quality
By Authority of the Environmental Management Commission
A

State Stormnvater Management Systems
Permit No. SW8 020826
Donnie F. King Property (Lot 22R Scotts Hill Bluff)
Stormwater Permit No.. SW8 020826
Pender County
Designer's Certification
1, , 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
i7

State Stormwater Management Systems
Permit No. SW8 020826
Certification Requirements:
1. The drainage area to the system contains approximately the permitted
acreage.
2. The drainage area to the system contains no more than the permitted
amount of built -upon area.
3. All the built -upon area associated with the project is graded such that the
runoff drains to the system.
4. The outlet/bypass structure elevations are per the approved plan.
5. The outlet structure is located per the approved plans.
6. Trash rack is provided on the outlet/bypass structure.
7. All slopes are grassed with permanent vegetation.
8. Vegetated slopes are no steeper than 3:1.
9. The inlets are located per the approved plans and do not cause short-
circuiting of the system.
10. The permitted amounts of surface area and/or volume have been
provided.
11. Required drawdown devices are correctly sized per the approved plans.
12. All required design depths are provided.
13. All required parts of the system are provided, such as a vegetated shelf,
and a forebay.
14. The overall dimensions of the system are provided, per the approved
plans.
cc: NCDENR-DWQ Regional Office
Pender County Building Inspections
0

OFFIC5USE ONLY
ate Received
Fee Paid
Permit Number
mac.I 0,v
zlo. �= 87(_
63-b
1
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
This form may be photocopied for use as an original
I. GENERAL INFORMATION
1. Applicants name (specify the name of the corporation, individual, etc. who owns the project):
Donnie F. King, Jr.
2. Print Owner/Signing Official's name and title (person legally responsible for facility and compliance):
Donnie F. King, Jr.1 Landowner
3. Mailing Address for person listed in item 2 above:
110 Wintergreen Road
City: Wilmington State: North Carolina Zip: 28409
Telephone Number: 910 796-0853
4. Project Name (subdivision, facility, or establishment name - should be consistent with project name on plans,
specifications, letters, operation and maintenance agreements, etc.),
Donnie F. King, Jr. Property
5. Location of Project (street address):
Scotts Hill Bluff Subdivision, Section One, Lot 22R (Marsh Field Drive
City: Scotts Hill
County: Ne►nrHemeyer
6. Directions to project (from nearest major intersection):
250 feet South of intersection of SR 1571 and Great Pine Court
7. Latitude: 34° 18' 45"
Longitude: 770 45' 24"
of project
8. Contact person who can answer questions about the project:
Name: Donnie F. King, Jr. Telephone Number: ( 910 )_796-0853
11. PERMIT INFORMATION:
1. Specify whether project is (check one): X New Renewal Modification
Form SWU-101 Version 3.99 Page I of

2. 1f this application is being submitted as the result of a renewal or modification to art existing permit, list the
existing permit number Not Applicable and its issue date (if known)
3. Specify the type of project (check one):
Low Density X High Density Redevelop General Permit Other
4. Additional Project Requirements (check applicable blanks):
_CAMA Major X Sedimentation /Erosion Control 404/401 Pen -nit _NPDES Stormwater
Information on required state permits can be obtained by contacting the Customer Service Center at
1-877-623-6748.
III. PROJECT INFORMATION
1. In the space provided below, summarize how stormwater will be treated. Also attach a detailed narrative
(one to two pages) describing stormwater management for the project.
Stormwater will enter the infiltration basin through a 100 foot grassed swale. A level spreader is provided
to minimize erosion at the basin entrance. A 1.5-inch rainfall event will be infiltrated in approximately 11.6
hours.
2. Stormwater runoff from this project drains to the Cape Fear River basin.
3. Total Project Area. 5.44 acres acres 4. Project Built Upon Area: <30 aka
5. How many drainage areas does the project have? 1
6. Complete the following information for each drainage area. If there are more than two drainage areas in the
project, attach art additional sheet with the information for each area provided in the same format as below,
�
Basinanformation
Ta maga rea.
:..
Drainage p:
g rea;2
ReceivingStream Name
Futch Creek
Receiving Stream Class
Class SA HOW
Drainage Area
5.44 acres
Existing Impervious* Area
56,570 S.F.
Proposed Impervious*Area
8,894 SY
Impervious* Area (total)
27.6 %
I�npeivrous*;surface Area ,. `
;' Drama96 Areal "'
Drainage Area 2
On -site Buildings
8,894 S.F. BUA
On -site Streets
0.00 S.F.
On -site Parking
0.00 S.F.
On -site Sidewalks
0.00 S.F.
Other on -site
0.00 S.F.
Off -site
56,570 S.F.
Total: 65,464 S.F.
Total:
* Impervious area is defined as the built upon area including, but not limited to, buildings, roads, parking areas,
sidewalks, gravel areas, etc.
Form SWU-101 Version 3.99 Page 2 of 4

7. How was the off -site impervious area listed above derived? Review of plans provided by others.
IV. DEED RESTRICTIONS AND PROTECTIVE COVENANTS
The following italicized deed restrictions and protective covenants are required to be recorded for all
subdivisions, outparcels and future development prior to the sale of any lot. If lot sizes vary significantly, a table
listing each lot number, size and the allowable built -upon area for each lot must be provided as an attachment.
1. The following covenants are intended to ensure ongoing compliance with state stormwater management permit number
as issued by the Division of Water Quality. These covenants may not be
changed or deleted without the consent of the State.
2. No more than square feet of any lot shall be covered by structures or impervious materials.
Impervious materials include asphalt, gravel, concrete, brick, stone, slate or similar material but do not include wood
decking or the water surface of swimming pools.
3. Swales shall not be filled in, piped, or altered except as necessary to provide driveway crossings.
4. Built -upon area in excess of the permitted amount requires a state storm water management permit modification prior to
construction.
5. All permitted runofffrom outparcels or future development shall be directed into the permitted storm water control
system. These connections to the stormwater control system shall be performed in a manner that maintains the integrity
and performance of the system as permitted.
By your signature below, you certify that the recorded deed restrictions and protective covenants for, this project
shall include all the applicable items required above, that the covenants will be binding on all parties and persons
claiming under them, that they will run with the land, that the required covenants cannot be changed or deleted
without concurrence from the State, and that they will be recorded prior to the sale of any lot.
V. SUPPLEMENT FORMS
The applicable state stormwater management permit supplement form(s) listed below must be submitted for each
BMP specified for this project. Contact the Stormwater and General Permits Unit at [phone] for the status
and availability of these forms.
Form SWU-102
Wet Detention Basin Supplement
Form SWU-103
Infiltration Basin Supplement
Form SWU-I04
Low Density Supplement
Form SWU-105
Curb Outlet System Supplement
Form SWU-106
Off -Site System Supplement
FormSWU-107
Underground Infiltration Trench Supplement
FormSWU-108
Neuse River Basin Supplement
Form SWU-109
Innovative Best Management Practice Supplement
Form SWU-101 Version 3.99 Page 3 of 4

VI. SUBMITTAL REQUIREMENTS
Only complete application packages will be accepted and reviewed by the Division of Water Quality (DWQ).
A complete package includes all of the items listed below. The complete application package should be
submitted to the appropriate DWQ Regional Office.
Please indicate that you have provided the following required information by initialing in the space provided
next to each item.
Initials
• Original and one copy of the Stormwater Management Permit Application Form
• One copy of the applicable Supplement Form(s) for each BMP
• Permit application processing fee of $420 (payable to NCDENR)
• Detailed narrative description of stormwater treatment/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 named streets or NCSR numbers
- Original contours, proposed contours, spot elevations, finished floor elevations
- Details of roads, drainage features, collection systems, and stormwater control measures
- Wetlands delineated, or a note on plans that none exist
- Existing drainage (including off -site), drainage easements, pipe sizes, runoff calculations
- Drainage areas delineated
- Vegetated buffers (where required)
VII. AGENT AUTHORIZATION
If you wish to designate authority to another individual or firm so that they may provide information on your
behalf, please complete this section.
Designated agent (individual or firm): Haggett Engineering Associates, Inc.
Mailing Address: P.O. Box 15104
City: Wilmington State: North Carolina Zip: 28412
Phone: ( 910 ) 397-0808 Fax: ( 910 ) 397-0812
Vlll. APPLICANT'S CERTIFICATION
I, (print or type name of person fisted in General Information, item 2) Donnie F. King, Jr.
certify that the information included on this permit application form is, to the best of my knowledge, correct and
that the project will be constructed in conformance with the approved plans, that the required deed restrictions
and protective covenants will be recorded, and that the proposed project complies with the requirements of 15A
Signature: 4- J —
Form SWU-101 Version 3.99 Page 4 of 4
Date: •7 9 D z

Permit No. SW8020826
(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 pray be photocopied for use as an original
DWQ Stormwater Management Plan Review:
A complete stormwater management plan submittal includes a stormwater management permit application, an
infiltration basin supplement for each system, design calculations, soils report and plans and specifications
showing all stormwater conveyances and system details.
1. PROJECT INFORMATION
Project Name: Donnie F. King Property
Contact Person: Douglas N. Haggett Phone Number: ( 910 ) 397-0808
This worksheet applies to: Basin No.
1
(as identified on plans)
in Drainage Area 1
(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
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
Autryville
6 ® or cf/hr/sf (circle appropriate units)
1.79 fmSI (Seasonal High Water Table Elevation)
1.5 inch (1.5 inch event for SA waters, 1 inch everri for others)
8,846 C.f.
0.483 days
80 ft. X 19 ft. = 1,820 sq. ft. (bottom dimensions)
8,897 C.f.
4.00 fins!
7.30 fmsl
8.30 fins!
Fonn SWU-103 Rev 3.99 Page I of 3

III. REQUIRED ITEMS CHECKLIST
The following checklist outlines design requirements per the Stormwater Best Management Practices Manual
- (N.C. Department of Environment, Health and Natural Resources, February 1999) and Administrative Code
Section: 15 A NCAC 2H .1008.
- Initial in the space provided to indicate that the following design requirements have been met and supporting
documentation is attached. If the applicant has designated an agent in the Stormwater Management Permit
Application Form, the agent may initial below. Attach justification if requirement has not been met,
Applicants Initials
T24 a. System is located 50 feet from class SA waters and 30 feet from other surface waters.
Qt b. System is located at least 100 feet from water supply wells.
C. Bottom of system is at least 2 feet above the seasonal high water table.
- d. Bottom of the system is 3 feet above any bedrock or impervious soil horizon.
e. System is not sited on or in fill material or DWQ approval has been obtained.
f. System is located in a recorded drainage easement for the purposes of operation and
maintenance and has recorded access easements to the nearest public right-of-way.
g. Drainage area for the device is less than 5 acres.
h. 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.
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.
C'- '15 V1_- k. All side slopes stabilized with vegetated cover are no steeper than 3 -I (H: V).
Qd 1. A pretreatment device such as a catch basin, grease trap, filter strip, grassed Swale or
sediment trap is provided.
in. 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.
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).
o.
Flow distribution mechanism within the basin is provided.
p.
A benchmark is provided to determine the sediment accumulation in the pretreatment device.
45\Z q.
Runoff in excess of the design volume bypasses off-line systems (bypass detail provided).
r.
System is designed to draw down the design storage volume to the proposed bottom
elevation under seasonal high water conditions within five days. A soils report and all
pertinent draw -down calculations are attached.
s.
Plans ensure that the installed system will meet design specifications (constructed or
restored) upon initial operation once the project is complete and the entire drainage area is
stabilized.
Form SWU-103 Rev 3.99 Page 2 of 3

IV. INFILTRATION BASIN OPERATION AND MAINTENANCE AGREEMENT
l . After every runoff producing rainfall event and at least monthly inspect the infiltration system for erosion,
trash accumulation, vegetative cover, and general condition.
2. Repair eroded areas immediately, re -seed as necessary to maintain adequate vegetative cover, mow
vegetated cover to maintain a maximum height of six inches, and remove trash as needed.
3. After every runoff producing rainfall event and at least monthly inspect the bypass, inflow and overflow
structures for blockage and deterioration. Remove any blockage and repair the structure to approved design
specifications.
4. Remove accumulated sediment from the pretreatment system and infiltration basin annually or when depth
in the pretreatment unit is reduced to 75% of the original design depth. The system shall be restored to the
original design depth without over -excavating. Over -excavating may cause the required water table
separation to be reduced and may compromise the ability of the system to perform as designed. Removed
sediment shall be disposed of in an appropriate manner and shall not be handled in a manner that will
adversely impact water quality (i.e. stockpiling near a stormwater treatment device or stream, etc.).
A benchmark shall be established in the pretreatment unit. The benchmark will document the original
design depth so that accurate sediment accumulation readings can be taken. The measuring device used to
determine the depth at the benchmark shall be such that it will give an accurate depth reading and not
readily penetrate into accumulated sediments.
When the design depth reads Z- M feet in the pretreatment unit, the sediment shall be
removed from both the pretreatment unit and the infiltration basin.
5. If the Division determines that the system is failing, the system will immediately be repaired to original
design specifications. If the system cannot be repaired to perform its design function, other stormwater
control devices as allowed by NCAC 2H .1000 must be designed, approved and constructed.
I acknowledge and agree by my signature below that I am responsible for the performance of the five
maintenance procedures listed above. I agree to notify DWQ of any problems with the system or prior to any
changes to the system or responsible party.
Print Name and Title:_Dann;G rtr eine, )
Address: 110 wt`+ti eroo (ecn 0 k/ I) I" 'vt s n /YG �_ Z .5W Oct _
Phone: 7 6 0953 Date: c3/� a
Note: The legally responsible party should not be a homeowners association unless more than 50% of the lots have been sold and a
resident of the subdivision has been named the president.
1 , allotary Public for the State of �4tt2�INQ� County of
NSW Nangyer R do hereby certify that Bann lc F• Ki ✓� tTl': _ _personally appeared before me this
day of Ocl- and acknowledge the due execution of the forgoing infiltration basin maintenance requirements.
Witness my liand and official seal,
S ., •,.. " OFFIOAL SEAL" My commission expires
vz Notary Public, North Carolina
f County of New Hanover
Darline Wils n
M Commission Expires'OS
Form SWU-103 Rev 3.99 Page 3 of 3