SW8000612_CURRENT PERMIT_20010531

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO. SW
DOC TYPECURRENT PERMIT
APPROVED PLANS
❑ HISTORICAL FILE
❑ COMPLIANCE EVALUATION INSPECTION
DOC DATE
YYYYMMDD
O

RECEXVED
ZIMMER DEVELOPMENT COMPANY, LLC MAY 3 12001
REAL ESTATE DEVELOPERS
BY:
In PRINCESS STREET • P.O. BOX 2628 • WILMINGTON, NORTH CAROLINA 28402 • 910-763-4669 • FAX [phone]
(HAND DELIVERED)
May 30, 2001
Ms. Linda Lewis
North Carolina Department of Environment
and Natural Resources
Division of Water Quality
127 Cardinal Drive Extension
Wilmington, North Carolina 28405
Re: Kinkos Retail Store
Wilmington, North Carolina
Stormwater Permit No. SW8000612
Dear Ms. Lewis:
In accordance with the requirements of Stormwater Permit No. SW8000612, the enclosed Designer's
Certification is being submitted to your office for the above -referenced project. A copy of the
Stormwater Pen -nit has also been included.
Should you have any questions or comments, please feel free to contact me at [phone].
Sincerely,
Zimmer Development Company, LLC
eichard M. Collier, P.E.
RMC/kns
I?nclosures
cc: Michael V. Ue, Zimmer Development Company

State Stormwater Mana-ement Systems
Permit No. SW8 000612
Kinkos Retail Store
Stormwater Permit No. SW8 000612
New Hanover County
Designer's Certification
l 1 M . 60LU£9- , as a duly registefed in
the State of North Carolina, having been authorized to observe (periodically/weekly/full time) the construction of
the project,
14
ID4) D160�t4v&L J21t. WlZM 4c
(Project)
for - i [0& . &ZC% 14� La {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:
Regist;-auon N' u.n'orr 2�5
Date MAY Z� 1
SEAL
F(H CARo '
Ile
• 574 g
sF e
qRD C0�-�'.S•
2

State Stormwater Management Systems
Permit No. SW8 00061 2
Certification Requirements:
1. The drainage area to the system contains approximately the permitted acreage. Offsite drainage areas
ate either routed around or accounted for.
f tL 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.
G 4. The outlet/bypass structure elevations are per the approved plan.
5. The outlet/bypass structure is located per the approved plans.
--don the out]et/bypass structure. 5C"SOJ5 a. &-+rk5
1'"'WA 1;X Yf-Q' A=6
t-K46 7. All slopes are grassed with permanent vegetation.
8. Vegetated slopes are no steeper than 3:1.
L� 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.
PtIc- 11. Required drawdown or bypass devices are correctly sized per the approved plans.
12.. All required design depths are provided
-+MG 13. All required parts of the system are provided, such as pretreatment ,
14. The overall dimensions of the system, as shown on the approved plans, are provided.
cc: NCDENR-DWQ Regional orrice
Tony Roberts, New Hanover Count), Building Inspector
7

St:'tc of North Carolina
Department of Environment
and Natural Resources
Wilttiiii-ton Re�,iunal Office
.lames 13. 1-1unt. Jr., Governor
Bill Holman, Secretary
Division of, Water Quality
July 6, 2000
11,1r. Jeffrey L. Zimmer. Mananer
Z-1 Commercial Properties; LLC
1 11 Princess Street
\V1ln­IinY(ton. NC 254-02
Subject: Permit No. SWS 000612
Kinkos Retail Store
High Density Stormwater Project
New Hanover County
Dear Mr. Zimmer:
The Wihnington Regional Office received a complete Stormwater Management Permit Application for Kinkos
Retail Store on July 6, 2000. 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. SOUS 000612 dated July 6. 2000. for the construction of Kinkos Retail Store.
This permit shall be effective from the date of issuance until July 6, 2010, 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.
lf-anv parts, requirements; or limitations contained in this permit are unacceptable, you have the right to request an
adj udicatory hearing upon written request within thirty (30) days following receipt ofthis permit. This request must
he in the form of a written petition. ronforming to Chanter 150R of the North Carolina General Statutes, and filed
iff:ce of Adminisi,ra(i,.,e bearings, P.U. Drawer'7447, }?�tlei.gh, [•lt~ '1'76 1 1-'1447. iJ,tle s such demands
are made this permit shall be final and binding.
If you have an), questions. or need additional information concerning this matter, please contact Linda Lewis, or
me at [phone].
Sincerely,
Rick Shiver
Water Quality Re- ional Supervisor
F\'.SS/arl: S-.\� %QS\STORMWATTERMIT\000612-JUL
cc: R/lark Han -,rove, P.E.
Richard Collier. Aaent
Tong Roberts; New Hanover County Inspections
Beth Easley, New Hanover County Engineering
David Mayes, P.E.,-City of Wilmington Stormwater
Linda Lewis
M111minuton l:cLlonal Office
Central Files
127 Cardinal Dr. Est., Wilmington, North Carolina 28405 Telephone [phone] FAX [phone]
An Equal opportunit}' Affirmative Action Employer 50%. recycled/101%, post -consumer paper

State Stormwater Management Systems
Permit No. SWS 000612
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF VI'ATER QUALITY
STATE STORM"'ATER 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
Z-1 Commercial Properties, LLC
Kinkos Retail Store ,
New Hanover County
FOR THE
construction, operation and maintenance of an underground infiltration trench in compliance with the provisions
of I SA NCAC 2H .1000 (hereafter referred to as the "stornnvater rules'D 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. '
ibe datte. ofis Liance unt:1 Juh, 6. 2010 and sha[1'iC-,(J"11) !iii fi:iil(�"+Ving
specified conditioiis andiimitati=:,ns:
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.
?. 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
23,525 square feet of impervious area.
I Approved plans, specifications for this project are incorporated by reference and are enforceable parts
of the permit.
4. The tract will be limited to the amount of built -upon area indicated on page 3 of this permit, and per
approved plans.
S. The roof drainage from Cory Everson's building must be redirected, per the approved plans.
6. The trench bottom elevation may not be lower than elevation 41 MSL.
7. Any clayey soils within 2' below the trench must be excavated and removed.

i
State StorniNvater Manaaement Systems
Permit No. SV+18 000612
Project Name:
Permit Number:
location:
Applicant:
Mailing Address:
Application Date:
Name of Receiving Stream/Index 9:
Classification of Water Body:
Desigtl Storm:
Trench Dimensions, LxWxH, feet:
Trench Bottom Elevation, FMSL:
Drainage Area, acres:
Total Impervious Surfaces, ft2:
Offsite Area enterinu Pond. ft2:
DIVISION OF WATER QUALITY
PROJECT DESIGN DATA SI-IEET
Kinkos Retail Store
SW8 000612
New Hanover County
Mr. Jeffrey L. Zimmer, Manager
Z-1 Commercial Properties, LLC_
1 I I Princess Street
Wilmington; NC 28402
July 6, 2000
UT Hewletts Creek / (CFRI 8-87-26)
Required Storage Volume; fl':
Provided Stora�Te Volume, ft':
Ove5f7ow Storage Ele-vu;,ion, I'"A —S1'..:
Controlling Orifice:
Type of Soil:
Expected Infiltration Rate:
Seasonal HILh Water Table Elevation
Drawdown Time:
"SA"
1.5"
Trench A 100' x 3.89' x 3.32' w/100' 24" ADS perforated pipe
Trench B 100' x 7.78' x 3.32' w/200' 24" ADS perforated pipe
41.13
0.8
23,525
none, ner Engirnefr.
(Roof drainage fi•om Cory Evernon's is )ioted to be redirected)
3,060
7,577 (1,722 in trench plus 5,855 during storm)
44.45 (Tole of•I -each)
overflow weir in DI-1 with 15" 4) bypass pipe
Sand with some clay
8.7" per hour
39 I~MSL
7.8 hours
3

rt
State Stormwater Management Systems
Permit No. SW8 000612
11. 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.
During construction, erosion shall be kept to a minimum and any eroded areas of the system will be repaired
immediate])'.
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 as
detailed on the Infiltration Trench Supplement, 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 in drop inlets and trenches.
C. Mowing and revegetation of grassed areas.
d. Immediate repair of eroded areas.
e. Debris removal and unclogging of drop inlets, bypass, trenches, catch basins and piping.
g. Access to the trenches for maintenance must be available. This may involve the removal of asphalt
to access and maintain the system.
4. Records of maintenance activities must be kept and made available upon request to authorized personnel
ofDWQ. The records will indicate the date, activity, name of person performing the work and what actions
were taken.
S. 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
.r 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 fiicility, a certification must be received from an appropriate &? ;Igner for the system- installed
cetlifying that th:: permitted f -(,ility 1-1 .s oven 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.
If the stormwater system was used as an Erosion Control device, it must be restored to design conditiori prior
to operation as a stormwater treatment device. and prior to occupancy of the farility. Use of infiltration
�'�-erris as crtisI�, `:'or�tlol ae��ices is,ni , recti]ItrinLt]dc;d:
The following items will require a modification to the permit:
a. Any revision to the approved plans, regardless of size.
b. Project name change.
C. Transfer of ownership.
d. Redesign or addition to the approved amount of built -upon area.
C. 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 was sought.
f. filling in, altering, or piping of any vegetative conveyance shown on the approved plan.
10. . The Director may determine that other revisions to the project should require a modification to the permit.
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.
H

State Storm xater Management Systems
Permit No. SWS 000612
12. Prior to the sale of any portion of the property, an access/maintenance easement to the stormwater facilities
shall be granted in favor of the permittee if access to the stormwater facilities will be restricted by the sale
of any'portion of the property.
13. The permittee is responsible for verif},ino that the proposed built -upon area does not exceed the allowable
built -upon area. y
14. The runoff from all built -upon area proposed on the project must be directed into the permitted stormwater
control system. Offsite drainage must either be accounted for or redirected.
15. 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.
16. The permittee shall notify the Division of any mailing address changes within 30 days.
Ill. GENERAL CONDITIONS
1. This permit is not transferable. In the event there is a desire for the facilities to change ownership, or there
is a name change of the Permittee, a formal permit request must be submitted to the Division of Water
Quality accompanied by an application fee, documentation from the parties involved, and other supporting
materials as may be appropriate. The approval of this request will be considered on its merits and may or
may not be approved.
2. Failure to abide by the conditions and limitations contained in this permit may subject the Permittee to
enforcement action by the Division of Water Quality, in accordance with North Carolina General Statute
143-215.6A 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.
j the event that the fac. `liti s fail to pe; lnrrn satisfactorily, including the creation of m�i ance conditions,
the Permittee shall take immediate corrective action, including those as may be required by this Division,
such as repair, and / or the construction of additional or replacement stormwater management systems.
5. The permittee grants DENR Staff permission to enter the property for the purpose of inspecting all
components of the permitted stormwater management facility.
U. '1 c �,ermit ,nay be modified, revoked and reissued or terminated for cause. The Tiling of a request for a
permit modification, revocation and reissuance or termination does not stay any permit condition.
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.
Permit issued this the 6th day of July, 2000.
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
Kerr-T. Stevens, Director
Division of Water Quality
By Authority of the Enviroamental Management Commission
Permit Number SW8 000612
5

State Stormwater Management Systems
Permit No. SW8 000612
Kinkos Retail Store
Stormwater Permit No. SW8 000612
New Hanover 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 iterns-on page 2 of this form is included in the Certification
Noted deviations from approved plans and specification:
I
Signature
Reoistr«tion Number
Date
SEAL
I

State Stormwater Management Systems
Permit No. S W8 000612
Certification Requirements.
cc:
1. The drainage area to the system contains approximately the permitted acreage. Offsite drainage areas
are either routed around or accounted for.
2. The drainage area to the system contains no more than the permitted amount of built -upon area.
3. AlI 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/bypass structure is located per the approved plans.
6. "brash 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 or bypass 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 pretreatment, a vegetated shelf, and a forebay.
14. The overall dimensions of the system, as shown on the approved plans,, are provided.
NCDENR-DWQ Regional Office
Tony Roberts, New Ilanover County Building Inspector
7

OFFICE USE ONLY
Date Received Fee Paid Permit Number
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
This form may he photocopied for use as an original
I. GENERAL INFORMATION
1. ' Applicants name (specify the name of the corporation, individual, etc, who owns the project):
-Ss
2. Print Owner/Signing Official's name and title (person legally responsible for facility and compliance):
,�,,��
L.0
3. Mailing Address for person listed in item 2 above:
--
City:_Sd.L'%1miAjq State:—LSLCZip: $YQ�
Telephone Number: ( 910 7 (Q - y L4 9
4. Project Name (subdivision, facility, or establishment name - should be consistent with project name on plans,
specifications, letters, operation and maintenance agreements, etc,):
_Kt N ko's :2G+a.LT
5. Location of Project (street address):
y700 d Ls AW-dA-C_-b�Ci �c-
City:_—Lu_�Mi-hjMfco.lt_N County:TA!y,1l
6. Directions to project (from nearest major intersection):
�i.00/!ET���ii.—I�LTsI�tGT LQN C7"F C����tSa �15�
-
�R
7. Latitude: _�� �— ��. Longitude_._ of project
8. Contact person who can answer questions about the project:
Name: _N.r-40 t,►+;, Telephone Number: (_Q�__)_.39
���yY_�
II. PERMIT INFORMATION:
1. Specify whether project is (check one): New Renewal Modification
Form SW U-101 Version 3.99 Page 1 of 4
�A

t

2. If this application is being submitted as the result of a renewal or modification to an existing permit, list the
existing permit number and its issue date (if known)
3. Specify the type of project (check one):
Low Density >< High Density Redevelop General Permit Other
4. Additional Project Requirements (check applicable blanks):
_CAMA Major Sedimentation/Erosion Control _404/401 Permit _NPDES Stormwater
Information on required state permits can be obtained by contacting the Customer Service Center at
1-877-623-6748.
III. PROJECT INFORMATION
1. In the space provided below, summarize how stormwater will be treated. Also attach a detailed narrative
(one to two pages) describing stormwater management for the project.
619rrnwaic . _wi 1_ be. G2 ov h a Seneg . of 01'(-y o Wihirlon
2. Stormwater runoff from this project drains to the Ci tPP, PEAK River basin.
3. Total Project Area: Q •'b0 ACC acres 4. Project Built Upon Area: b -7 %
5. How many drainage areas does the project have?�
6. Complete the following information for each drainage area. if there are more than two drainage areas in the
project, attach an additional sheet with the information for each area provided in the same format as below,
Basin Information
Drainage Area 1
Drainage Area 2
Receiving Stream Name
n
Receiving Stream Class
SA
[Drainage Area
0.60G
Existing Impervious* Area
0 A
Proposed Impervious*Area
0,54 RG
% Impervious* Area (total)
o
Impervious` Surface Area
Drainage Area 1
Drainage Area 2
On -site Buildings
000
On -site Streets
On -site Parking
Z
On -site Sidewalks
Q1 (0 $�r
Other on -site
Off -site
e-
Total: p. AG 7 $
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-10I Version 3.99 Page 2 of 4

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7. How was the off -site impervious area listed above derived
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 Z 5,SZS square feet ofany lot shall be covered by structures or impervious materials.
Impervious materials include asphalt, gravel, concrete, brick, stone, slate or similar material but do not include wood
decking or the water surface of swimming pools.
3. Swales shall not be filled in, piped, or altered except as necessary to provide driveway crossings.
4. Built -upon area in excess of the permitted amount requires a state stormwater management permit modification prior to
construction.
5. All permitted runoff from outparcels or future development shall be directed into the permitted stormwater control
system. These connections to the stormwater control system shall be performed in a manner that maintains the integrity
and performance of the system as permitted.
By your signature below, you certify that the recorded deed restrictions and protective covenants for this project
shall include all the applicable items required above, that the covenants will be binding on all parties and persons
claiming under them, that they will run with the land, that the required covenants cannot be changed or deleted
without concurrence from the State, and that they will be recorded prior to the sale of any lot.
V. SUPPLEMENT FORMS
The applicable state stormwater management permit supplement form(s) listed below must be submitted for each
BMP specified for this project. Contact the Stormwater and General Permits Unit at [phone] for the status
and availability of these forms.
Form SWU-102
Wet Detention Basin Supplement
Form SWU-103
Infiltration Basin Supplement
Form SWU-104
Low Density Supplement
Form SWU-105
Curb Outlet System Supplement
Form SWU-106
Off -Site System Supplement
Form SWU-107
Underground Infiltration Trench Supplement
Form SWU-108
Neuse River Basin Supplement
Form SWU-109
Innovative Best Management Practice Supplement
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,
1. Please indicate that you have provided the following required information by initialing in the space provided
next to each item.
Initials
a Original and one copy of the Stormwater Management Permit Application Form kve-
One copy of the applicable Supplement Form(s) for each BMP ��{1
Permit application processing fee of $420 (payable to NCDENR) Ity416
a' Detailed narrative description of stormwater treatment/management A"c
a Two copies of plans and specifications, including;
Development/Project name
- Engineer and firm
Legend
North arrow
- Scale
Revision number & date
- Mean high water line
- Dimensioned property/project boundary
- Location map with named streets or NCSR numbers
- Original contours, proposed contours, spot elevations, finished floor elevations
- Details of roads, drainage features, collection systems, and stormwater control measures
- Wetlands delineated, or a note on plans that none exist
- Existing drainage (including off -site), drainage easements, pipe sizes, runoff calculations
- Drainage areas delineated
- Vegetated buffers (where required)
VII. AGENT AUTHORIZATION
If you wish to designate authority to another individual or firm so that they may provide information on your
behalf, please complete this section.
Z-1 Comaxm.c. i prod et'f . ES i C.LC
Designated agent (individual or firm)�;� �� m. CIIfjt4r _ orlr�o�t��
Mailing Address:_JJ J Sri nrGf.45 Sf r�_�.}
City: W AW.Aq 4n N� - _ State: _ALe Zip: —Z$.9QZ
Phone: ��l O _)lip - •i IP(i9 Fax; �`�! O i 7—p 3 - a 3 7�
VIII. APPLICANT'S CERTIFICATION
I, (print or type name of person listed in Ceneral Information, item 2) 1?t44►�M • C'011j tee.
certify that the information included on this permit application form is, to the best of my knowledge, correct and
that the project will be constructed in conformance with the approved plans, that the required deed restrictions
and protective covenants will be recorded, and that the proposed project complies with the requirements of 15A
NCAC 2H .1000,
Signature: i " A4 Date: MAY
Form SWU-101 Version 3.99 Page 4 of 4

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Permit No. ay3 cwLp, 2—
(it) be provided by DWQ)
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
UNDERGROUND INFILTRATION TRENCH 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
underground infiltration trench supplement for each system, design calculations, and plans and specifications
showing all stormwater conveyances and system details.
I. PROJECT INFORMATION
Project Name : k, A k O S,, 11
Contact Person: _ %1�n e/� N• /7A r`9 /fir_ Phone Number: (M7
For projects with multiple infiltration systems, a supplement form must be completed for each system. This
worksheet applies to: Trench
(from plans)
in Drainage Area
(front Form SWU-101)
11. DESIGN INFORMATION (attach supporting calculations/documentation):
Soils Report Summary (based upon an actual field investigation and soil borings)
Soil Type 4� e1 4
Infiltration Rate g 7 to r r cf/hr/sf (circle appropriate units)
SHWT Elevation 37 fmsl (Seasonal High Water Table elevation)
Trench Design Parameters
Design Volume
Design Storm
Drawdown Time
Perforated Pipe Size
Perforated Pipe Length
No. Observation Wells
Stone Type (if used)
Stone Void Ratio
3 I oa c.f.
/, 6' inch event (1.5 inch event for SA waters, I inch event for others)
7'.9 4 is
a 9 inch diameter
3 00 ft.
d (may be required on a case -by -case basis)
Trench Elevations (in feet mean sea level) !J
Bottom Elevation W. /3 fmsl
Storage/Overflow Elevation fmsl
qy' yS Vr
Form S W U-107 Rev 3.99 Page I of 4

�� ��r .'+� C. �:�1�. • � � y�,l� nrl1,a..�•�.1 �F\` �;�, ,tip'

Trench Dimensions
Height
Width
3 , 3 ft. Length
3. R 9 ft. Volume Provided
- III. REQUIRED ITEMS CHECKLIST
40 ft.
cu.ft.
h'-72_Z 1C,eI
The following checklist outlines design requirements per the Stormwater Best Management Practices manual (N.C.
Department of Environment, Health and Natural Resources, November 1995) and Administrative Code Section: 15
A NCAC 2H .1008.
Initial in the space provided to indicate that the following design requirements have been met and supporting
documentation is attached. If the applicant has designated an agent in the Stormwater Management Permit
Application Form, the agent may initial below. Attach justification if a requirement has not been met.
Applicants Initials
AA?4 a. System is located 50 feet from class SA waters and 30 feet from other surface waters.
M10a 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.
111 d. Bottom of the system is 3 feet above any bedrock or impervious soil horizon.
N1N e. Off-line system, runoff in excess of the design volume bypasses the system (bypass detail
provided).
_ 1MIUf1- f. System is designed to draw down the design storage volume to the proposed bottom
elevation under seasonal high water conditions within five days based upon infiltration
through the bottom only (a hydrogeologic evaluation may be required).
'M/V g. Soils have a minimum hydraulic conductivity of 0.52 inches per hour.
1ry'1AI: h. System is not sited on or in fill material or DWQ approval has been obtained.
_ IMAZ# i. Plans ensure that the installed system will meet design specifications (constructed or
restored) upon initial operation once the project is complete and the entire drainage area is
stabilized.
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.
M air k. System is located in a recorded drainage easement for the purposes of operation and
maintenance and has recorded access easements to the nearest public right-of-way.
rnt'7�� 1. System captures and infiltrates the runoff from the first 1.0 inch of rainfall (1.5 inch event
for areas draining to SA waters ).
MN m. Drainage area for the device is less than 5 acres.
MYo n. A pretreatment device ( filter strip, grassed swale, sediment trap, etc.) is provided.
MV o. Trench bottom is covered with a layer of clean sand to an average depth of 4 inches.
M1U p: Sides of the infiltration trench are lined with geotextile fabric.
MN q. Rock used is free of fines (washed stone) and has a large void ratio.
M N r. Side to bottom area ratio is less than 4:1.
Form SWU-107 Rev 3,99 Page 2 of 4

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µ s. Observation well(s) are provided (case -by -case basis).
t. Vegetated filter is provided for overflow (50 feet for 5A waters, 30 feet for other waters)
and detail is shown on plans.
u. A benchmark for checking sediment accumulation is provided.
IV. UNDERGROUND INFILTRATION TRENCH OPERATION AND MAINTENANCE AGREEMENT
After every runoff producing rainfall event and at least monthly inspect the bypass/overflow structure for
blockage and deterioration and the infiltration system for erosion, trash accumulation, grass cover, and general
condition.
2. Repair eroded areas immediately, re -seed as necessary to maintain adequate vegetative cover, mow vegetative
cover to maintain a maximum height of six inches, and remove trash and blockages as needed to maintain
system performance.
Remove accumulated sediment annually or when depth is reduced to 75% of the original design depth. Restore
depth to original design depth without over -excavating, Over -excavating may cause the required water table
separation to be reduced and may compromise the ability of the system to perform as designed.
4. The water level in any monitoring wells will be recorded after a 1 inch rainfall event and at least once a month.
Chronic high water table elevations (within 1 foot of the bottom of the system for a period of three months)
shall be reported to DWQ immediately.
If DWQ determines that the system is failing, the system will immediately be repaired or replaced to original
design specifications. If the system cannot be repaired to perform its design function, other stormwater control
devices as allowed by NCAC 2H .1000 must be designed, approved and constructed.
6. Remove accumulated sediment from the infiltration system annually or when depth in the unit is reduced to
75% of the original design depth. The system shall be restored to the original design depth without over -
excavating. Over -excavating may cause the required water table separation to be reduced and may
compromise the ability of the system to perform as designed. Removed sediment shall be disposed of in an
appropriate manner and shall not be handled in a manner that will adversely impact water quality (i.e.
stockpiling near a stormwater treatment device or stream, etc.).
A benchmark shall be established in the infiltration system. The benchmark will document the original
design depth so that accurate sediment accumulation readings can be taken. The measuring device used to
determine the depth at the benchmark shall be such that it will give an accurate depth reading and not
readily penetrate into accumulated sediments.
When the depth at the benchmark reads 0.75 , the accumulated sediment shall be removed
from the system.
Form SWU-107 Rev 399 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.
-X-1 Gomm4rr—;al peopw4ics j Uc
Print Name and Title: �Rlcjn rnoi M. co i 1itP
Address: 55 U
Phone: 91n - 7(a -A-
Signature:
(Vote: 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, . \ iA&L4 Z UAi 01 , a Notary Publii'c11 for the State of KW4*) CUjU i hG County of
�]WCXeV , do hereby certify that P-1CJV�(,tJ1U �A. CO ie✓ personally appeared before me this 2-3
day of U Q _ _, and acknowledge the due execution of the forgoing infiltration basin maintenance
requirements. Witness my hand and official seal,
ol
.jAoTARy*
PUBLIC : U� My commission expires
AN
Form SWU-107 Rev 3.99 Page 4 of 4