SW6081003_CURRENT PERMIT_20090225

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SW lj/`%�l /w 3
DOC TYPE
CURRENT PERMIT
APPROVED PLANS
❑ HISTORICAL FILE
❑ COMPLIANCE EVALUATION INSPECTION
DOC DATE
YYYYM M D D

North Carolina
Beverly Eaves Perdue
Governor
Jane H. Holland
7225 Rouse Road
Holly Springs, NC 27540
CDER
Department of Environment and
Division of Water Quality
Coleen H. Sullins
Director
February 25, 2009
SUBJECT: Stormwater Management Permit SW6081003
Arlee Acres
High Density Subdivision Project
Harnett County
Dear Ms. Holland:
Natural Resources
Dee Freeman
Se: retary
The Fayetteville Regional Office of the Division of Water Quality received a Stormwater Management Permit
Application for the Arlee Acres project on October 20, 2008. Staff review of the revised application and plans and
specifications received on .January 9, 2009 and additional information received on January. 14, 2009 and February 19,
2009 has determined that the project, as proposed, will comply with the Stormwater Regulations set forth in Title 15A
NCAC 211 .1000. Therefore, we are forwarding herewith Stormwater Management Permit SW6081003, dated February
25, 2009, for the construction of the subject project.
This permit shall be effective from the date of issuance until February 25, 2019, 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) calendar days following receipt of this permit. This request
must be in the form of a written petition, conforming to Chapter 150B of the North Carolina General Statutes, and filed
with the Office of Administrative Hearings, P.O. Drawer 27447, Raleigh, NC 27611-7447. Unless such demands are
made this permit shall be final and binding.
If you have any questions, or need additional information concerning this matter, please contact Mike Lawyer or
myself at [phone].
Siinceerely,/ /0 qL
70l.UML�.6L T J
Belinda S. Henson
Regional Supervisor
Surface Water Protection Section
BSH: ML/ml
cc: John A. K. Tucker, PE -PO Box 297, Fuquay-Varina, NC 27526
1-121-11ett County Planning S Inspections Department
Harnett County Health Department -Bryan McSwain
FRO -Surface Water Protection
DWQ Central Files
recaiien, 225 Green Stn;al, Suite 7!1 Fayetteville, North Carolina 28101
?hone9104-A, 33001 FAY" 990-486 07071 Cuslomer Service: 1 877 023 67Ft8
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STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
STATE STORNINVATER 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
PERM1SS1ON IS HEREBY GRANTED TO
Jane H. Holland
Arlee .4 cres
Harnett County
FOR TI-1 E
construction, operation and maintenance of one bio-retention area and two wet detention ponds in compliance
with the provisions of 15A NCAC 2H .1000 (hereafter referred to as the "stormwater rules") and the approved
stormwater management plans and specifications and other supporting data as attached and on file with and
approved by the Division of Water Quality and considered a part of this permit.
This permit shall be effective from the date of issuance until February 25, 2019 and shall be subject to the
following specified conditions and limitations:
1. DESIGN STANDARDS
l . This permit is effective only with respect to the nature and volume of stormwater described in the
application and other supportingdata.
2. The stormwater controls labeled Basin 1, Basin 2 and Basin 3 have been designed to handle the runoff
from 58,710, 63,598 and 21,342 square feet of impervious area respectively. The stormwater controls
have been designed to handle the runoff from a total of 143,740 square feet of impervious area.
3. Approved plans and specifications for this project are incorporated by reference and are enforceable
parts of the permit.
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 following design elements have been permitted for the one bio-retention area and two wet detention
ponds, and must be provided in the system at all times.
Incaiiun: 7_25 Green 9rcel. Slum, 71y Fayelievlle, North Cajo fn:, 28801 Inc
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Basin 1-Bioretention
a.
Drainage Area. ft2:
293,.549
b.
Total Impervious Surfaces, ft2:
58,710
C.
TSS removal efficiency:
85%
d.
Bioretention Depth, inches:
9
C.
Temporary Ponded Depth Elevation, FMSL:
417.00
Bioretention Bottom Elevation, FMSL:
413.75
f.
Bioretention Surface Area, ft2:
8,400
g.
Permitted Storage Volume, ft3:
5,627
h.
Receiving Stream/River Basin:
Hector Creek/Cape Fear
1.
Stream Index Number:
18- t 5-(0.4)
j.
Classification of Water Body:
"C;HQW"
Basin
2-Wet Detention
a.
Drainage Area, ft2:
317,988
b.
Total impervious Surfaces ftz:
63,598
C.
Pond Depth, feet:
3.5
d.
TSS removal efficiency:
90%
C.
Design Storm:
1"
f.
Permanent Pool Elevation, FMSL:
421.00
g.
Permitted Surface Area @PP, ft2:
12,180
h.
Permitted Storage Volume, ft3:
8,497
i.
Storage Elevation, FMSL:
421.80
j.
Controlling Orifice:
1.25" O pipe
k.
Permanent Pool Volume, ft3:
30,154
I.
Forebay Volume, ft3:
6,031
in.
Maximum Fountain Horsepower:
1/8
it.
Receiving Stream / River Basin:
Hector Creek/Cape Fear
o.
Stream Index Number:
18-15-(0.4)
p.
Classification of Water Body:
"C;I-IQW"
Loc.;lion: 225 Green ;treat, Suite 71 FayeGeviKe, Ncrtlh Carolina 28301 011E
?hone: 910-133-3d001 FAN. 910 4K,-07071 Customer Service: 1.377-623-5746 N J 1117 Lit I.0I ;I
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Basin ')-Wet Detention
1
a. Drainage Area, ft2:
107,158
b. Total Impervious Surfaces, ft2:
21,432
C. Pond Depth, feet: -
5.5
d. TSS removal efficiency:
90%
e. Design Stonn:
1"
f Permanent Pool Elevation, FMSL:
425.00
g. Permitted Surface Area @PP, ft2:
10,248
h. Permitted Storage Volume, ft3:
5,225
i. Storage E-levation, F?vISL:
425.50
J. Controlling Orifice:
1.00" o pipe
k. Permanent Pool Volume, ft3 : 19,260
1. Forebay Volume, ft3: 3,852
m. Maximum Fountain Horsepower: 1/S
n. Receiving Stream / River Basin: Hector Creek/Cape Fear
o. Stream Index Number: 18-15-(0.4)
p. Classification of Water Body: "C;HQW"
Il. SCHEDULE OF COMPLIANCE
No homeowner/lot owner/developer shall fill in, alter, or pipe any drainage feature (such as swales)
shown on the approved plans as part of the stormwater management system without submitting a
revision to the permit and receiving approval from the Division.
2. The permitter is responsible for verifying that the proposed built -upon area for the entire lot, including
driveways and sidewalks, does not exceed the allowable built -upon area. Once the lot transfer is
complete, the built -upon area may not be revised without approval from the Division of Water Qualitv.
and responsibility for meeting the built -upon area limit is transferred to the individual property owner.
3. If an Architectural Review Board or Committee is required to review plans for compliance with the
BUA limit, the plans reviewed must include all proposed built -upon area. Any approvals given by the
Board do not relieve the homeowner of the responsibility to maintain compliance with the permitted
BUA limit.
4. 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 the approved plans, regardless of size.
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b. Project name change.
C. Transfer of ownership.
d. Redesign or addition to the approved amount of built -upon area.
e. Further subdivision, acquisition, 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.
The Director may determine that other revisions to the project should require a modification to the
permit.
6. 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 lime flame 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.
7. 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.
S. During construction, erosion shall be kept to a minimum and any eroded areas of the system will be
repaired immediately.
). Upon completion of construction, prior to issuance of a Certificate of Occupancy, and prior to
operation ofthis permitted facility, a certification most 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.
10. 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.
11. Permanent seeding requirements for the stormwater control must follow the guidelines established in the
North Carolina Erosion and Sediment Control Planning and Design Manual.
12. Prior to the sale of any lot, the following deed restrictions must be recorded:
a. The following covenants are intended to ensure ongoing compliance with State Stormwater
Management Permit Number SW6081003, as issued by the Division of Water Quality under
NCAC 21-t.1000.
b. The Slate of North Carolina is made a beneficiary of these covenants to the extent necessary to
maintain compliance with the Stormwater Management Permit.
C. These covenants are to nm with the land and be binding on all persons and parties claiming
under them.
d. The covenants pertaining to stormwater may not be altered or rescinded without the express
written consent of the State of North Carolina, Division -of Water Quality.
e. Alteration of the drainage as shown on the approved plans may not take place without the
concurrence of the Division of Water Quality.
F. The maximum built -upon area per lot is 5,557 square feet. This allotted amount includes any
built -upon area constructed within the lot property boundaries, and that portion of the
right-of-way between the front lot line and the edge of the pavement. Built upon area includes,
but is not limited to, structures, asphalt, concrete, gravel, brick, stone, slate, coquina and parking -
areas, but does not include raised, open wood decking, or the water surface of swimming pools.
g. All runoff on the lot must drain into the permitted system. This may be accomplished through
providing roof drain gutters, which drain to the street, grading the lot to drain toward the street,
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or grading perimeter swales and directing them into the pond or street. Lots that will naturally
drain into the system are not required to provide these measures.
Built -upon area in excess of the permitted amount will require a permit modification.
13. A copy of the recorded deed restrictions must be submitted to the Division within 30 calendar days
of the date of recording the plat, and prior to selling lots. The recorded copy must contain all of
the statements above, the signature of the-Permittee, the deed book number and page, and the
stamp/signature of the Register of Deeds.
14. Decorative spray fountains will be allowed in the stormwater treatment system, subject to the following
criteria:
a. The fountain must draw its water from less than 2' below the permanent pool surface.
b. Separated units, where tubing connects the nozzle, pump and intake, may be used only if they
draw water from the surface in the deepest part of the pond.
C. The falling water from the fountain must be centered in the pond, away from the shoreline.
d. The maximum horsepower for the fountain's pump is based on the permanent pool volume. The
maximum pump power for a fountain in Wet Detention Basin 2 and/or Wet Detention Basin 3 is
1/8 HP.
15. Prior to transfer of the permit, the stormwater facilities will be inspected by DWQ personnel. The
facility must be in compliance with all permit conditions. Any items not in compliance must be repaired
or replaced to design condition prior to the transfer. Records of maintenance activities performed to date
will be required.
16. The permittee shall at all times provide the operation and maintenance necessary to assure that all
components of the permitted stormwater system function 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 side slopes.
d. Immediate repair of eroded areas.
e. Maintenance of side slopes in accordance with approved plans and specifications.
f. Debris removal and unclogging of structures, orifice, catch basins and piping.
g. Access to all components of the system must be available at all times.
17. 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.
18. This permit shall become voidable unless the facilities are construcied in accordance with the conditions
of this permit, the approved plans and specifications, and other supporting data.
19. Built upon area includes, but is not limited to, structures, asphalt, concrete, gravel, brick, stone, slate,
coquina and parking areas, but does not include raised, open wood decking, or the water surface of
swimming pools.
III. GENERAL CONDITIONS
This permit is not transferable to any person or entity except after notice to and approval by the Director.
In the event there is either a desire for the facilities to change ownership, or there is a name change of
the Permittee, a "Name/Ownership Change Form" must be submitted to the Division of Water Quality
accompanied by appropriate documentation from the parties involved. This may include, but is not .
limited to, a deed of trust, recorded deed restrictions, Designer's Certification and a signed Operation
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and Maintenance plan. The project must be in good standing with DWQ. The approval of this request
will be considered on its merits and may or may not be approved.
2. The permittee is responsible for compliance with all of the terms and conditions of this permit until such
time as the Director approves the transfer request.
r
3. Failure to abide by the conditions and limitations contained in this permit may subject the Permittee to
enforcement action by the Division of Water Quality, in accordance with North Carolina General Statute
143-215.6A to 143-215.6C.
The issuance of this permit does not preclude the Permittee from complying with any and all statutes,
rules, regulations, or ordinances, which may be imposed by other government agencies (local, state, and
federal), which have jurisdiction.
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.
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.
Permittee grants permission to staff of the DWQ to access the property for the purposes of inspecting the
stormwater facilities during normal business hours.
The permittee shall notify the Division of any name, ownership or mailing address changes within 30
calendar days.
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.
10. A renewal request application must be submitted to the regional office at least 180 calendar days
prior to the expiration date of this permit.
permit issued this the twenty-fifth day of February 2009..
NORTH CAROLINA ENVIRONMENTAL MANAGEMENTCOMMISSION
.eP *era�
Coleen H. Sullins, Director
Division of Water Quality
By Authority of the Environmental Management Commission
Stormwater Management Permit SNN'6081003
Laa'.nn: S"5 6recn SI: eel. Suit, 71�. Fgyelt=_vile„ Nod caroling 23301
Phone:36001 FAA. Custonrei Service: 1-377-623-67,:8
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Arlee Acres Pagel of 2
Stormwater Management Permit SW6081003
Harnett County
Designer's Certification
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 a part of this Certification.
Noted deviations from approved Plans and specifications:
Signature
Registration Number
Date
SEAL
:ocalion; 225 Green Street. Sups 71_, F.=.Yetievi;l Nome caroling 28301 011e � 1
hone:9133001F,� 9iG-adu-07071 Cuslon:er Seivire: -&7i o23-b%�t8 Nnl'i!1C "II-o�Ina
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Certification Requirements: Page 2 of 2
1. The drainage area to the system contains approximately the permitted acreage.
2. The drainage area to the system contains no more than the permitted amount of built -upon area.
3. All the built -upon area associated with the project is graded such that the runoff drains to the
system.
4. All roof drains are located such that the runoff is directed into the system.
5. The outlet/bypass structure elevations are per the approved plan.
6. The outlet structure is located per the approved plans.
7. Trash rack is provided on the outlet/bypass structure.
S. All slopes are grassed with permanent vegetation.
9. Vegetated slopes are no steeper than 3:1.
10. The inlets are located per the approved plans and do not cause short-circuiting of the system.
11. The permitted amounts of surface area and/or volume have been provided.
12. Required drawdown devices are correctly sized per the approved plans.
13. All required design depths are provided.
14. All required parts of the system are provided; such as a vegetated shelf; a forebay, and the
vegetated filter.
15. The required dimensions of the system are provided; per the approved plan.
cc: NCDLNR-DWQ Regional Office
^cnton. 238 Caen Slrc.ra. Suite 714, Fayeitrville. Nol'Ih Carolina 28301 011C
:'none: 910-d'13,330G � FA,,' 910-dM, 0-07 1 Cnstrnnei 1 977-623-67at, N 61-t I] Ca r01 I Il'Lt
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DWQ USE ONLY
Date Received
Fee Paid
Permit Number
/D Z,�- "o Q
SaS
'a/ o /o0 3
State of North Carolina OCT 2 Z�OB
Department of Environment and Natural Resources
Division of Water Quality ®WQ
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):
2. Print Owner/Signing Official's name and title (person legally responsible for facility and compliance):
lane H. Holland
3. Mailing Address for person listed in item 2 above:
7225 Rouse Road
City:Holly Springs State:NC Zip:27540
Phone:
Fax:
4. Project Name (subdivision, facility, or establishment name -should be consistent with project name on plans,
specifications, letters, operation and maintenance agreements, etc.):
5. Location of Project (street address):
Rollins Road
City: County:Harnett County
6. Directions to project (from nearest major intersection):
.90 miles south of intersection of NC 42 and SR 1413 on SR 1413
7. Latitude:35° 13' 14" N Longitude:78° 50' 57" W of project
8. Contact person who can answer questions about the project:
Name:tohn A.K. Tucker, Pe Telephone Number: (919 ) 567-0483
Email: [e-mail]
II. PERMIT INFORMATION:
1. Specify whether project is (check one):
Renewal DModification
Form SWU-101 Version 03.27.08 Page I of

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 []GeneralPermit ❑Universal SMP ❑Other
4. Additional Project Requirements (check applicable blanks; information on required state permits can be
obtained by contacting the Customer Service Center at 1-877-623-6748):
❑CAMA Major ®Sedimentation/Erosion Control 0404/401 Permit ®NPDES Stormwater
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.
Project is a residential subdivision. Stormwater will be captured in grassed swales and put through
dry detention basins
2. Stormwater runoff from this project drains to the Cane Fear River basin.
3. Total Property Area: 18.57 acres 4. Total Wetlands Area: 0 acres
5. 100' Wide Strip of Wetland Area: acres (not applicable if no wetlands exist on site)
6. Total Project Area**: 18.57 acres ao2! 7. Project Built Upon Area: 20 %
8. How many drainage areas does the project have? 3 07 ?
9. 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.
For high density Proiects, complete the table with one drainage area for each engineered stormwater device.
Basin Information
Drainage Area 1
Drainage Area 2
Receiving Stream Name
UN Tributary to Hector Creek
UN Tributary to Hector Creek
Stream Class & Index No.
Class C
Class C
Total Drainage Area (so
293,594
317,998
On -site Drainage Area (so
293,594
293,594 `.7
Off -site Drainage Area (so
0
0
Existing Impervious* Area (so
0
0
Proposed Impervious*Area (so
58,718
63,598
% Impervious* Area (total)
20
20
Impervious* Surface Area
Drainage Area 1
Drainage Area 2
On -site Buildings (so
58,718
47,678
On -site Streets (so
15,920
On -site Parking (so
On -site Sidewalks (so
Other on -site (sf)
Off -site (so
Total (so:
58,718
63,598
* Impervious area is defined as the built upon area including, but not limited to, buildings, roads, parking areas,
sidewalks, gravel areas, etc.
**Total project area shall be calculated based on the current policy regarding inclusion of wetlands in the built upon area
percentage calculation. This is the area used to calculate percent project built upon area (BUA).
Form SWU-101 Version 03.27.08 Page 2 of

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 ❑Universal SMP ❑Other
4. Additional Project Requirements (check applicable blanks; information on required state permits can be
obtained by contacting the Customer Service Center at 1-877-623-6748):
❑CAMA Major ®Sedimentation/Erosion Control ❑404/401 Permit ®NPDES Stormwater
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.
Project is a residential subdivision Stormwater will be captured in grassed swales and put through
dry detention basins --
2. Stormwater runoff from this project drains to the Cape Fear River basin.
3. Total Property Area: 18.57 acres 4. Total Wetlands Area: 0 acres
5. 100' Wide Strip of Wetland Area: acres (not applicable if no wetlands exist on site)
6. Total Project Area**: 18.57 acres 7. Project Built Upon Area: 20 %
8. How many drainage areas does the project have? 3
9. 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.
Fnr hioh liPnsity nroixts_ cnmolete the table with one drainage area for each engineered stormwater device.
Basin Information
Drainage Areaq �3
Drainage Area 2
Receiving Stream Name
UN Tributary to Hector Creek
Stream Class & Index No.
Class C - HQ
Total Drainage Area (sf)
321,472
On -site Drainage Area (sf)
73,938 "7
Off -site Drainage Area (sf)
0
Existing Impervious* Area (so
0
Proposed Impervious*Area (so
73,938
% Impervious* Area (total)
20 Z3% .7
Impervious* Surface Area
Drainage Area b
Drainage Area 2
On -site Buildings (so
73,938
On -site Streets (sf)
On -site Parking (sf)
On -site Sidewalks (so
Other on -site (so
Off -site (so
Total (so:
73,938
* Impervious area is defined as the built upon area including, but not limited to, buildings, roads, parking areas,
sidewalks, gravel areas, etc.
**Total project area shall be calculated based on the current policy regarding inclusion of wetlands in the built upon area
percentage calculation. This is the area used to calculate percent project built upon area (BUA).
Form SWU-101 Version 03.27.08 Page 2 of

10. How was the off -site impervious area listed above derived? From plans and proposed impervious area.
IV. DEED RESTRICTIONS AND PROTECTIVE COVENANTS
One of the following 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. Forms can be
downloaded from htto://h2o.enr.state.nc.us/su/bmp forms.htm - deed restrictions.
Form DRPC-1
High Density Commercial Subdivisions
Form DRPC-2
High Density Developments with Outparcels
Form DRPC-3
High Density Residential Subdivisions
Form DRPC-4
Low Density Commercial Subdivisions
Form DRPC-5
Low Density Residential Subdivisions
Form DRPC-6
Low Density Residential Subdivisions with Curb Outlets
By your signature below, you certify that the recorded deed restrictions and protective covenants for this
project shall include all the applicable items required in the above form, 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. Forms can be downloaded from ham://h2o.enr.state.nc.us/suibmp forms.htm.
Form SW401-Low Density
Form SW401-Curb Outlet System
Form SW401-Off-Site System
Form SW401-Wet Detention Basin
Form SW401-Infiltration Basin
Form SW401-Infiltration Trench
Form SW401-Bioretention Cell
Form SW401-Level Spreader
Form SW401-Wetland
Form SW401-Grassed Swale
Form SW401-Sand Filter
Form SW401-Permeable Pavement
Low Density Supplement
Curb Outlet System Supplement
Off -Site System Supplement
Wet Detention Basin Supplement
Infiltration Basin Supplement
Underground Infiltration Trench Supplement
Bioretention Cell Supplement
Level Spreader/Filter Strip/Restored Riparian Buffer Supplement
Constructed Wetland Supplement
Grassed Swale Supplement
Sand Filter Supplement
Permeable Pavement Supplement
FormSWU-101 Version03.27.08 Page 3of4

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 Office. (Appropriate office may be found by locating project on the
interactive online map at htto://h2o.enr.state.nc.us/su/msi maps.htm)
1. Please indicate that you have provided the following required information by initialing in the space provided
next to each item.
Initials
• Original and one copy of the Stormwater Management Permit Application Form
• Original and one copy of the Deed Restrictions & Protective Covenants Form (if
required as per Part IV above)
• Original of the applicable Supplement Form(s) and O&M agreement(s) for each BMP
• Permit application processing fee of $505 (Express: $4,000 for HD, $2,000 for LD)
payable to NCDENR
• Calculations & detailed narrative description of stormwater treatment/management
• Copy of any applicable soils report
• Two copies of plans and specifications (sealed, signed & dated), 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. (ex. designing engineer or firm)
Designated agent (individual or firm): John A K Tucker PE
Mailing Address:PO Box 297
City: Fuquay Varina State:NC Zip:27526
Phone: (919 ) 567-0483 Fax: (919 ) 567-3611
Email: iohnakgjohntuckerpe.com
Vlll. APPLICANT'S CERTIFICATION
I, (print or hype name of person listed in General Information, item 2) lane H. Holland
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 21-1.1000.
Form SWU-101 Version 03.27.08 Page 4 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 Office. (Appropriate office may be found by locating project on the
interactive online map at han'lih2o.enr.state.nc.us/su/insi mars htm)
1. Please indicate that you have provided the following required information by initialing in the space provided
next to each item.
Initials
• Original and one copy of the Stormwater Management Permit Application Form A _.,.._
• Original and one copy of the Deed Restrictions & Protective Covenants Form (if 'y
required as per Part IV aboue)
• Original of the applicable Supplement Form(s) and O&M agreement(s) for each BMP /( MK r
• Permit application processing fee of $505 (Express: $4,000 for FID, $2,000 for LD)
payable to NCDENR
• Calculations & detailed narrative description of stmenwater treatment/management .4 Aw—,
• Copy of any applicable soils report
• Two copies of plans and specifications (sealed, signed & doted), including:
- Development/Project name
- Engineer and firm
- Legend
- North arrow
- Scale
- Revision number & data
- Mean high water line
- Dimensioned property/project boundary
- Location map with named streets or NCSR numbers
-Original contours, proposed contours, spot elevations, finished floor elevations
- Details of roads, drainage features, collection systems, and stormwater control measures
- Wetlands delineated, or a note on plans that none exist
- Existing drainage (including off -site), drainage easements, pipe sizes, runoff calculations
- Drainage areas delineated
- Vegetated buffers (where required)
VIL AGENTAUFHORIZATION
If you wish to designate authority to another individual or firm so that they may provide information on your
behalf, please complete this section. (ex. designing engineer or firm)
Designated agent (individual or firm): lohn A K Tucker, PF
City: Fuguay Varian State:NC Zip:27526
Phone: [phone]&3 Fax: [phone]
Email: johnak®iohntuckerpo.com
Vill. APPLICANTS CERTIFICATION
1, (print or hype name a(person listed in General Information, item 2) lane ffHollar d
certify that the information included on this permit application form is, to the best of my knowledge, correct and
that the project will be constructed in conformance with the approved plans, that the required deed restrictions
and protective covenants will be recorded, and that the proposed project complies with the requirements of 15A
NCAC 2H .1000.
Signature: / Date: w 8 D$
Form SWU-101 Version 03.27.08 Page 4 of4

I. GENERAL INFORMATION
1. Applicants name (specify the name of the corporation, individual, etc. who owns the project):
2. Print Owner/Signing Official's name and title (person legally responsible for facility and compliance):
3. Mailing Address for person listed in item 2 above:
City:Holly Springs State:NC Zip:27540
Phone:
Email:
Fax:
DWQ USE ONLY
Date Received
Fee Paid
Permit Number
6 IZ6 O
jf7�
t4l o oo
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality Qo
STORMWATER MANAGEMENT PERMIT APPLICATION FOR
This form may be photocopied for use as an original %
WU
4. Project Name (subdivision, facility, or establishment name -should be consistent with project name on plans,
specifications, letters, operation and maintenance agreements, etc.):
5. Location of Project (street address):
City:
County:Harnett County
6. Directions to project (from nearest major intersection):
.90 miles south of intersection of NC 42 and SR 1413 on SR 1413
7. Latitude:35° 13' 14" N Longitude:78° 50' 57" W of project
8. Contact person who can answer questions about the project:
Name:lohn A.K.Tucker Pe Telephone Number: (919 ) 567-0483
Email: '[e-mail]
II. PERMIT INFORMATION:
1. Specify whether project is (check one):
E
❑Renewal []Modification
Form SWU-101 Version03.27.08 Page I of

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 ❑Universal SMP ❑Other
4. Additional Project Requirements (check applicable blanks; information on required state permits can be
obtained by contacting the Customer Service Center at 1-877-623-6748):
❑CAMA Major ®Sedimentation/Erosion Control 0404/401 Permit ®NPDES Stormwater
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.
Proiect is a residential subdivision. Stormwater will be captured in grassed swales and put through
dry detention basins
2. Stormwater runoff from this project drains to the Cane Fear River basin.
3. Total Property Area: 18.57 acres 4. Total Wetlands Area: 0 acres
5. 100' Wide Strip of Wetland Area: acres (not applicable if no wetlands exist on site)
6. Total Project Area":18.57 acres 7. Project Built Upon Area: 20 %
8. How many drainage areas does the project have? 3
9. 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.
For high density projects, complete the table with one drainage area for each engineered stormwater device.
Basin Information
Drainage Area 1
Drainage Area 2
Receiving Stream Name
UN Tributary to Hector Creek
UN Tributary to Hector Creek
Stream Class & Index No.
Class C
Class C
Total Drainage Area (so
293,594
317,988
On -site Drainage Area (so
293,594
293,594
Off -site Drainage Area (sf)
0
0
Existing Impervious* Area (so
0
0
Proposed Impervious*Area (sf)
58,718
63,598
% Impervious* Area (total)
20
20
Impervious* Surface Area
Drainage Area 1
Drainage Area 2
On -site Buildings (so
58,718
47,678
On -site Streets (so
15,920
On -site Parking (so
On -site Sidewalks (so
Other on -site (so
Off -site (so
Total (so:
58,718
63,598
* Impervious area is defined as the built upon area including, but not limited to, buildings, roads, parking areas,
sidewalks, gravel areas, etc.
**Total project area shall be calculated based on the current polio regarding inclusion of wetlands in the built upon area
percentage calculation. This is the area used to calculate percent project built upon area (BUA).
Form SWU-101 Version 03.27.08 Page 2 of

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 ❑Universal SMP ❑Other
4. Additional Project Requirements (check applicable blanks; information on required state permits can be
obtained by contacting the Customer Service Center at 1-877-623-6748):
❑LAMA Major ®Sedimentation/Erosion Control ❑404/401 Permit ®NPDES Stormwater
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.
Project is a residential subdivision. Stormwater will be captured in grassed swales and put through
dry detention basins
2. Stormwater runoff from this project drains to the Cape Fear River basin.
3. Total Property Area: 18.57 acres 4. Total Wetlands Area: 0 acres
5. 100' Wide Strip of Wetland Area: acres (not applicable if no wetlands exist on site)
6. Total Project Area**:18.57 acres 7. Project Built Upon Area: 20 %
8. How many drainage areas does the project have? 3
9. 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.
For high density projects, complete the table with one drainage area for each engineered stormwater device.
Basin Information
Drainage Areaa 3
Drainage Area 2
Receiving Stream Name
UN Tributary to Hector Creek
Stream Class & Index No.
Class C - HQ
Total Drainage Area (so
321,472
On -site Drainage Area (so
73,938
Off -site Drainage Area (sf)
0
Existing Impervious* Area (so
0
Proposed Impervious*Area (so
73,938
% Impervious* Area (total)
20
Impervious* Surface Area
Drainage Area k
Drainage Area 2
On -site Buildings (so
73,938
On -site Streets (so
On -site Parking (so
On -site Sidewalks (so
Other on -site (so
Off -site (so
Total (so:
73,938
* Impervious area is defined as the built upon area including, but not !tinted to, buildings, roads, parking areas,
sidewalks, gravel areas, etc.
**Total project area shall be calculated based on the currentpolicy regarding inclusion of wetlands in the built upon area
percentage calculation. This is the area used to calculate percent project built upon area (BUA).
Form SWU-101 Version 03.27.08 Page 2 of

10. How was the off -site impervious area listed above derived? From plans and proposed impervious area.
IV. DEED RESTRICTIONS AND PROTECTIVE COVENANTS
One of the following 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. Forms can be
downloaded from httl2:/lh2o.enr.state.nc.us/suibml2 forms.htm - deed restrictions.
Form DRPC-1
High Density Commercial Subdivisions
Form DRPC-2
High Density Developments with Outparcels
Form DRPC-3
High Density Residential Subdivisions
Form DRPC-4
Low Density Commercial Subdivisions
Form DRPC-5
Low Density Residential Subdivisions
Form DRPC-6
Low Density Residential Subdivisions with Curb Outlets
By your signature below, you certify that the recorded deed restrictions and protective covenants for this
project shall include all the applicable items required in the above form, 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. Forms can be downloaded from htto://h2o.enr.state.nc.us/su/bml2 forms.htm.
Form SW401-Low Density
Form SW401-Curb Outlet System
Form SW401-Off-Site System
Form SW401-Wet Detention Basin
Form SW401-Infiltration Basin
Form SW401-Infiltration Trench
Form SW401-Bioretention Cell
Form SW401-Level Spreader
Form SW401-Wetland
Form SW401-Grassed Swale
Form SW401-Sand Filter
Form SW401-Permeable Pavement
Low Density Supplement
Curb Outlet System Supplement
Off -Site System Supplement
Wet Detention Basin Supplement
Infiltration Basin Supplement
Underground Infiltration Trench Supplement
Bioretention Cell Supplement
Level Spreader/Filter Strip/Restored Riparian Buffer Supplement
Constructed Wetland Supplement
Grassed Swale Supplement
Sand Filter Supplement
Permeable Pavement Supplement
Form SWU-101 Version 03.27.08 Page 3 of

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 Office. (Appropriate office may be found by locating project on the
interactive online map at htto://h2o.enr.state.nc.us/su/insi maos.htm)
1. Please indicate that you have provided the following required information by initialing in the space provided
next to each item.
Initials
• Original and one copy of the Stormwater Management Permit Application Form
�l p _
f�
• Original and one copy of the Deed Restrictions & Protective Covenants Form (if
�
required as per Part IV above)
r
• Original of the applicable Supplement Form(s) and O&M agreement(s) for each BMP
/j ASK
• Permit application processing fee of $505 (Express: $4,000 for HD, $2,000 for LD)
payable to NCDENR
• Calculations & detailed narrative description of stormwater treatment/management
nht4e
• Copy of any applicable soils report
• Two copies of plans and specifications (scaled, signed & dated), including:
/ Y
- 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. (ex. designing engineer or firm)
Designated agent (individual or firm): John A K Tucker PE
Mailing Address:PO Box 297
City: Fuquay Varina State:NC Zip:27526
Phone: (919 ) 567-0483
Email: iohnak®johntuckerpe.com
VIII. APPLICANT'S CERTIFICATION
Fax: (919 ) 567-3611
I, (print or type name of person listed in General Information, item 2) lane H. Holland
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.
Date: ID $ U8
Form SWU-101 Version 03.27.08 Page 4 of

Permit
(to be provided by DWQ)
r o2oF wATegoc
R
o �
NCDENR
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
BIORETENTION CELL SUPPLEMENT
This form must be filled out, printed and submitted.
The Required Items Checklist (Part 111) must be printed, filled out and submitted along with all of the required information.
I. PROJECT INFORMATION
Project name
Arlee Acres
Contact name
John Tucker
Phone number
919 567 0483
Date
September 25, 2008
Drainage area number
Basin 1
II. DESIGN INFORMATION
Site Characteristics
Drainage area 293,549 ft2
Impervious area 58,710 ft2
Percent impervious 20.0% %
Design rainfall depth 1.0 inch
Peak Flow Calculations
Is pre/post control of the 1-yr, 24-hr peak flow required?
N (Y or N)
1-yr, 24-hr runoff depth
3.2 r in
1-yr, 24-hr intensity
2.8 in/hr
Pm -development 1-yr, 24-hr peak flow
20.03 ft3/sec
Post -development 1-yr, 24-hr peak flow
8.2 ft3/sec
Pre/Post 1-yr, 24-hr peak control
-11.8 ft3/sec
Storage Volume: Non -SR Waters
Design volume
5,627.0 ft3
Ponding depth of water
9 inches OK
Ponding depth of water
0.75 ft
Surface area of the top of the bioretention cell
8,400.0 ft2 OK
Length:
240 ft OK
Width:
35 ft OK
-or- Radius
It
Storage Volume: SR Waters
1-yr, 24-hr depth
in
Pre -development 1-yr, 24-hr runoff
ft3
Post -development 1-yr, 24-hr runoff
ft3
Minimum volume required
ft3
Volume provided
ft3
Soils Report Summary
Drawdown time, ponded volume
12 hr
OK
Drawdown time, to 24 inches below surface
24 hr
OK
Drawdown time, total:
36 hr
In -situ soil:
Soil type
Sandy Loam
Soil permeability
0.50 inmr
Planting media soil:
Soil type
Sand/ClaylComp
Soil permeability
1.00 inmr
OK
Soil composition
% Sand (by weight)
88%
OK
DENR-FRO
DWQ

Permit Number:
(to be provided by DWQ)
% Fines (by weight)
% Organic (by weight)
Phosphorus Index(P-Index)
Basin Elevations
Temporary pool elevation
Planting elevation (top of the mulch)
Bottom of the cell
Planting depth
Depth of mulch
SH WT elevation
Are underdrains being installed?
8% OK
4% OK
Total: 100%
How many clean out pipes are being installed?
What factor of safety is used for sizing the underdrains? (See
BMP Manual Section 12.3.6)
Additional distance between the bottom of the planting media and
the bottom of the cell to account for underdrains
Bottom of the cell required
Distance from bottom to SHWT
Type of bioretention cell (answer "Y" to only one of the two
following questions):
Is this a grassed cell?
Is this a cell with trees/shrubs?
Planting Plan
Number of tree species
Number of shrub species
Number of herbaceous groundcover species
Additional Information
Does volume in excess of the design volume bypass the
bioretention cell?
Does volume in excess of the design volume Flow evenly
distributed through a vegetated filter?
What is the length of the vegetated filter?
Does the design use a level spreader to evenly distribute flow?
Is the BMP located at least 30 feet from surface waters (50 feet if
SA waters)?
Is the BMP located at least 100 feet from water supply wells?
Are the vegetated side slopes equal to or less than 3:1?
Is the BMP located in a recorded drainage easement with a
recorded access easement to a public Right of Way (ROW)?
Inlet velocity (from treatment system)
Is the area surrounding the cell likely to undergo development in
the future?
Are the slopes draining to the bioretention cell greater than 20%?
Is the drainage area permanently stabilized?
Pretreatment Used
(Indicate Type Used with an "X" in the shaded cell)
Gravel and grass
(8inches gravel followed by 3-5 ft of grass)
Grassed swale
Forebay
10.(unitless) OK
417=fmsl OK
415.75 fmsl
413.75 fmsl
2ft
2 inches OK
410 fmsl OK
Y (YorN)
9OK
17
1ft
412.75 fmsl
2.75 ft OK
Y (Y or N) OK
N (Y or N)
Y (YorN)
y (Y or N)
25 ft
N (Y or N) Show how Flow is evenly distributed.
Y (YorN)
Y (Y or N)
Y (Y or N) OK
Y (Y or N) OK
0.5 ft/sec OK
N (YorN)
N " : (Y or N) OK
Y (YorN) OK
160

i Permit No:
(to be assigned by oWQ)
Ill. REQUIRED ITEMS CHECKLIST - •-- '- - -
Please indicate the page or plan sheet numbers where the supporting documentation can be found. An incomplete submittal package will
result in a request for additional information. This will delay final review and approval of the project. Initial in the space provided to
indicate the following design requirements have been met. If the applicant has designated an agent, the agent may initial below. If a
requirement has not been met, attach justification.
Pagel Plan
Initials Sheet No.
Ali L� 1. Plans (1' - 59 or larger) of the entire site showing:
- Design at ultimate build -out,
- Off -site drainage (if applicable),
- Delineated drainage basins (include Rational C coefficient per basin),
- Cell dimensions,
- Pretreatment system,
- High Flow bypass system,
- Maintenance access,
- Recorded drainage easement and public right of way (ROW),
- Clean out pipe locations,
- Overflow device, and
- Boundaries of drainage easement.
2. Plan details (1" = 30' or larger) for the bioretention cell showing,
/ - Cell dimensions
- Pretreatment system,
- High Flow bypass system,
- Maintenance access,
- Recorded drainage easement and public right of way (ROW),
- Design at ultimate build -out,
- Off -site drainage (if applicable),
- Clean out pipe locations,
- Overflow device, and
( - Boundaries of drainage easement.
!� 2 3. Section view of the bioretention cell (1' = 20' or larger) showing:
- Side slopes, 3:1 or lower
Underdrain system (if applicable), and
- Bioretention cell layers [ground level and slope, pre-treatment, pending depth, mulch depth, fill media
depth, washed sand, fitter fabric (or choking stone if applicable), #57 stone, underdrains (if applicable),
SHWT level(s), and overflow structure]
i ik�"
4. A soils report that is based upon an actual field investigation, soil borings, and infiltration tests. The
results of the soils report must be verified in the field by DWQ, by completing & submitting the soils
investigation request form. County soil maps are not an acceptable source of soils information. All
elevations shall be in feet mean sea level (fmsl). Results of soils tests of both the planting soil and the in
situ soil must include:
- Soil permeability,
- Soil composition (% sand, %fines, % organic), and
- P-index.
{�' Y 5. A detailed planting plan (1" = 20' or larger) prepared by a qualified individual showing:
- A variety of suitable species,
- Sizes, spacing and locations of plantings,
- Total quantity of each type of plant specified,
- A planting detail,
- The source nursery for the plants, and
- Fertilizer and watering requirements to establish vegetation.
6. An assurance that the installed system will meet design specifications upon initial operation once the
project is complete and the entire drainage area is stabilized.
F
� 7. A construction sequence that shows how the bioretention cell will be protected from sediment until the
entire drainage area is stabilized.
&. The supporting calculations (including underdrain calculations, if applicable).
4 9. A copy of the signed and notarized inspection and maintenance (I&M) agreement.
10. A copy of the deed restriction.
P— RWdn1-Rin tarvinrvRev 1 Pan III. pane 1 of 1

Thomas J. Boyce
P.O. Box 81
Pittsboro, NC 27312
919-868-8135
NC Licensed Soil Scientist # 1241
NC Registered Sanitarian # 1353
John A. K. Tucker, PE
Consulting Engineer
PO Box 297
Fuquay-Varina, NC 27526
Re: Drainage basin 1, Arlee Acres Sub. Rollins Rd., Harnett County
Dear Mr. Tucker,
A soils evaluation was completed in the area of drainage basin 1 for Arlee Acres Subdivision on
November 26, 2008. The purpose of the evaluation was to determine the suitability of the soils to
support the drainage basin. All ratings and determinations were made in accordance with "Field
Book for Describing and Sampling Soils, Version 2.0".
The tract was evaluated by auger borings and landscape position. The soils of this area are
similar to the Wagram series and have no indicators of soil wetness within sixty inches. A typical
soil profile is described below.
Ap - 0 to 12 inches, brown (1 OYR 5/3) loamy sand, weak fine granular structure
E - 12 to 30 inches, very pale brown (1 OYR 7/4) loamy sand, weak fine granular structure
BE - 30 to 36 inches, brownish yellow (1 OYR 6/6) sandy loam, weak fine subangular blocky
structure
Btl - 36 to 46 inches, brownish yellow (1 OYR 6/6) sandy loam, weak fine subangular blocky
structure
Bt2 - 46- 60 inches, strong brown (7.5YR 5/6) sandy clay loam, weak medium subangular
blocky structure
This report does not guarantee or represent approval or issuance of permits as needed. This
report only represents my opinion as a licensed soil scientist. I trust this is the information that
you require at this time. If you have any questions or need assistance, please call.
Sincerely,
Thomas J. Boyce

WATER QUALITY SWLE��4'f'• ,
NEED OOK 69jPA EBNI WAiFA QUAITY SWALE i
RArfA�wryfsWE also
' BASIN t �. _
IEIOREIFNTOM _ 1---_--
watERQUum swuE i\ 1,,.�� n�� —`I _ �; �/ / ` \1 1, wArER swuE'I
i
ESP€R CIRCLE-.
DRAWA��B4SIN4 \
.;
NEEo9oox7sa vAEss
•, j' I` WATER ONTY SIN 7
( o 4
B
(DRY I
—I WAiEROUALITYSWAIE 31
"DRAINAGE BASIN
L_--- L-------J L

Open Channel Flow Worksheet
Project: Arles Acres
Location: Basin 1 - Emergency Spillway
Design Sic" 25 yr - Perm Liner
DA 12 Irn 125 C Q2 010 Q2s
(ac) (in/hr) (in/hr) (in/hr) (cfs) (cfs) (cfs)
6.75 5.76 7.20 8.20 0,40 15.55 19.44 22.14
Mannings Equation
Q2I
010
Q25
Mannings n
Bottom Width.
Depth of Flow
Channel Slope
Side Slope
Area of Flow
Wetted Perimeter
Surface Width
Hydraulic Radius.
Kinematic Wave Speed
-Velocity
'Shear Stress
VR Product
'Manning's Roughness
�-�.. -
cfs UsecData � �' �'Calculaletl Value..
cfs--
cfs
cfs
Enter the Design Flow value within the Solver Window. Click Tools, Select and
Ifeet
feet Click Solver, enter'Value of', then click Solve Button. Mannings Equation will
be solved for Depth of Flow.
ft./ft.
I�M03
H:V
.2.8
sq. fl.
13.44
feet
13.37
feet
fl ,feet
-
' 10.31
1 ILYsec.
- 7.67
ft./sec. Vel >= 4 fps - Perm Liner Required
4.69
Ib./sq.11, NAG SC250, Shear stress < 8.00 , Velocity <15 fps
9.65
n Permissible Unit Shear Stress (lb./sq.ft.)
Tents
Lining Type
Depth of Flow Range (feet) Lining Type
0-0.5 0.5-2.0
>2.0
Bare Soil
0.023 0.02
0.02 Bare Soil
NA
Jute Net with straw
0.028 0.022
0.019 Jute Net with straw
0,45
Straw with Net
0.065 0.033
0.025 Straw with Net
1.45
Curled Wood Matting
0.066 0.035
0.028 Curled Wood Matting
1,55
Synthetic Matting
0.036 0.025
0.021 Synthetic Matting
2,00
Riprap 6" D5o
0.104 0.069
0.035 Riprap 6" Dw
2.00
Riprap 12" D5o
0.078
0.04 Riprap 9" D50
3.00
Riprap 12" Dw
4.00
North American Green
Riprap 15" D5o
5.00
S75
0.055 .055-.021
0.021 Riprap 18" D50
6.00
SC 150
0.05 .05--.018
0.018 Riprap 21" D50
7.80
SC 15OBN
0.05 .05-.018
0.018 Riprap 24" Dw
8.00
C125
0.022 .022-.014
0.014 S75
1.55
C1258N
0.022 .022-.014
0.014 SC150
2.00
P300
.049-.034 .034-.020
0.02 SC15OBN
2.10
SC250
0.04 .040-.012
0.011 C125
2.25
C125BN
2.35
P300
8.00
SC250
8.00

Permit N
(to be provided by DWQ)
Drainage Area Number:
Bioretention Operation and Maintenance Agreement
I will keep a maintenance record on this BMP. This maintenance record will be kept in a
log in a known set location. Any deficient BMP elements noted in the inspection will be
corrected, repaired or replaced immediately. These deficiencies can affect the integrity
of structures, safety of the public, and the removal efficiency of the BMP.
Important operation and maintenance procedures:
— immediately after the bioretention cell is established, the plants will be watered
twice weekly if needed until the plants become established (commonly six
weeks).
— Snow, mulch or any other material will NEVER be piled on the surface of the
bioretention cell.
— Heavy equipment will NEVER be driven over the bioretention cell.
— Special care will be taken to prevent sediment from entering the bioretention cell.
— Once a year, a soil test of the soil media will be conducted.
After the bioretention cell is established, I will inspect it once a month and within 24
hours after every storm event greater than 1.0 inches (or 1.5 inches if in a Coastal
County). Records of operation and maintenance will be kept in a known set location
and will be available upon request.
Inspection activities shall be performed as follows. Any problems that are found shall
be repaired immediately.
BMP element:
Potentialproblems:
will remntheroblem: roblem:The
entire BMP
"Crash/debris is resent.
jHtl
ve the tras.The
perimeter ofthe
cell
Areas of bare soil and/or
erosive gullies have formed.
grade the soilary tobioretention
remove the gulln plant aground cover anuntil it isestablished. Proand aone-time
fertiliztion.
The inlet device: pipe,
stone verge or swale
The pipe is clogged (if
applicable).
Unclog the pipe. Dispose of the
sediment off -site.
The pipe is cracked or
Replace the pipe.
otherwise damaged (if
applicable).
Erosion is occurring in the
Regrade the swale if necessary to
swale (if applicable).
smooth it over and provide erosion
control devices such as reinforced
turf matting or riprap to avoid
future problems with erosion.
Stone verge is clogged or
covered in sediment (if
Remove sediment and clogged
stone and replace with clean stone.
applicable).
Form SW401-Bioretention O&M-Rev.3 Page 1 of 4

BMP element:
Potentialproblems:
How 1 will remediate theproblem:
The pretreatment area
Flow is bypassing
Regrade if necessary to route all
pretreatment area and/or
Flow to the pretreatment area.
gullies have formed.
Restabilize the area after grading.
Sediment has accumulated to
Search for the source of the
a depth greater than three
sediment and remedy the problem if
inches.
possible. Remove the sediment and
restabilize the pretreatmentarea.
Erosion has occurred.
Provide additional erosion
protection such as reinforced turf
matting or riprap if needed to
prevent future erosion problems.
Weeds are present.
Remove the weeds, preferably by
hand.
The bioretention cell:
Best professional practices
Prune according to best professional
vegetation
show that pruning is needed
practices.
to maintain optimal plant
health.
Plants are dead, diseased or
Determine the source of the
dying.
problem: soils, hydrology, disease,
etc. Remedy the problem and
replace plants. Provide a one-time
fertilizer application to establish the
ground cover if a soil test indicates
it is necessary.
Tree stakes/wires are present
Remove tree stake/wires (which
six months after planting.
can kill the tree if not removed).
The bioretention cell:
Mulch is breaking down or
Spot mulch if there are only random
soils and mulch
has floated away.
void areas. Replace whole mulch
layer if necessary. Remove the
remaining much and replace with
triple shredded hard wood mulch at
a maximum depth of three inches.
Soils and/or mulch are
Determine the extent of the clogging
clogged with sediment.
- remove and replace either just the
top layers or the entire media as
needed. Dispose of the spoil in an
appropriate off -site location. Use
triple shredded hard wood mulch at
a maximum depth of three inches.
Search for the source of the
sediment and remedy the problem if
possible.
An annual soil test shows that
Dolomitic lime shall be applied as
pl-I has dropped or heavy
recommended per the soil test and
metals have accumulated in
toxic soils shall be removed,
the soil media.
disposed of properly and replaced
with new planting media.
Form SW401-Bioretention O&M-Rev.3 Page 2 of 4

BMP element:
Potentialproblems:
How 1 will remediate theproblem:
The underdrain system
Clogging has occurred.
Wash out the underdrain system.
if applicable)
The drop inlet
Clogging has occurred.
Clean out the drop inlet. Dispose of
the sediment off -site.
The drop inlet is damaged
Repair or replace the drop inlet.
The receiving water
Erosion or other signs of
Contact the NC Division of Water
damage have occurred at the
Quality 401 Oversight Unit at 919-
outlet.
733-1786.
Form SW401-Bioretention O&M-Rev.3 Page 3 of 4

Permit N
(to be provided by DWQ)
I acknowledge and agree by my signature below that I am responsible for the
performance of the 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.
Project name:
BMP drainage area number:
Print name:
Address:7225 Rouse Road, Holly Springs. NC 27540
Signature:
Date:
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.
a Notary Public for the State of
, County of , do hereby certify that
personally appeared before me this
day of , and acknowledge the due execution of the
forgoing bioretention maintenance requirements. Witness my hand and official seal,
SEAL
My commission expires
Form SW401-Bioretention I&M-Rev. 2 Page 4 of 4

Permit No.
(to be provide by DWQ)
® �
Fg WATO
o G
A0
NC ENR
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
WET DETENTION BASIN "SUPPL-EMENT A
This form must be filled out, printed and submitted.
The Required Items Checklist (Part 111) must be printed, filled out and submitted along with all of the required information.
I. PROJECT INFORMATION
Project name
Arlee Acres
Contact person
John Tucker
Phone number
919 567 0483
Date
Drainage area number
Basin 2
II. DESIGN INFORMATION
-
Site Characteristics
Drainage area
317,988 tt2
Impervious area, post -development
63,598 e
%impervious
20.00 %
Design rainfall depth
1.0 in
Storage Volume: Non -SA Waters
Minimum volume required
6,885 its OK
Volume provided
8,497 ff'
OK, volume provided is equal to or in excess of volume required.
Storage Volume: SA Waters
1.5' runoff volume
It,
Pre -development 1-yr, 24-hr runoff
111
Post -development 1-yr, 24-hr runoff
to
Minimum volume required
0 fl'
Volume provided
It
Peak Flow Calculations
Is the pre/post control of the tyr 24hr storm peak flow required? Y (Y or N)
1-yr, 24-hr rainfall depth
3.0 in
Rational C, pre -development
0.72 (unitless)
Rational C, post -development
0.40 (unitless)
Rainfall intensity: 1-yr, 24-hr stone
0.13 inlhr OK
Pre -development 1-yr, 24-hr peak now
0.66 ffslsec
Post -development 1-yr, 24-hr peak flow
0.37 ttllsec
Pre/Post 1-yr, 24-hr peak flow control
-0.30 ff'Isec
Elevations
Temporary pool elevation
421.80 fmsl
Permanent pool elevation
421.00 fmsl
SHWT elevation (approx. at the pen. pool elevation)
fmsl
Top of 10ft vegetated shelf elevation
421.95 first
Bottom of 10tt vegetated shelf elevation
421.85 fmsl
Sediment cleanout, top elevation (tottom of pond)
418.50 fins)
Sediment cleanout, bottom elevation
417.50 fmsl
Sediment storage provided
1.00 It
Is there additional volume shored above the state -required temp. pool?
n (Y or N)
Elevation of the top of the additional volume
fmsl
Form SW401-Wet Detention Basin-Rev.5 Pans I. & IL Design Summary, Page 1 of 2

Permit No.
(to be Pmvided by DWO)
II. DESIGN INFORMATION
Surface Areas
Area, temporary pool
13,107 f?
Area REQUIRED, permanent pool
4,770 V
SAIDA ratio
1.50 (unitless)
Area PROVIDED, permanent pool, A�_
12,180 f(r
OK
Area, bottom of 1Oft vegetated shelf, A,_,
7,923 ft
Area, sediment cleanout, top elevation (bottom of pond), Ate.
4,716 ft
Volumes
Volume, temporary pool
8,497 ft'
OK
Volume, permanent pool, Vp,,,, ww
30,154 ft'
Volume, forebay (sum of forebays it more than one forebay)
6,031 ft3
Forebay % of permanent pool volume
20.0 % %
OK
SAIDA Table Data
Design TSS removal
90 %
Coastal SAIDA Table Used?
Y (Y or N)
MountairdPiedmont SAIDA Table Used?
(Y or N)
SAIDA ratio
1.50 (unitless)
Average depth (used in SAIDA table):
Calculation option 1 used? (See Figure 10-2b)
'' N (Y or N)
Volume, permanent pool, Vp, -,,
It,
Area provided, permanent pool, A._p
ft
Average depth calculated
ft
Average depth used in SAIDA, d., (Round to nearest 0.5ft)
ft
Calculation option 2 used? (See Figure 10-2b)
Y (Y or N)
Area provided, permanent pool, A...
12,180 ft
OK
Area, bottom of 10ft vegetated shelf, A.-.
7,923 ft
OK
Area, sediment cleanout, top elevation (bottom of pond), A,,_,.
4,716 fy
OK
"Depth" (distance b/w bottom of 1 Oft shelf and top of sediment)
3.35 It
OK
Average depth calculated
3.08 ft
OK
Average depth used in SAIDA, de„ (Round to nearest 0.5ft)
3.0 it
OK
Drawdown Calculations
Drawdown through onfce?
Y (Y or N)
Diameter of orifice (if circular)
1.25 in
Area of orifice (if -non -circular)
m2
Coefficient of discharge (Co)
0.60 (unitless)
Drying head (Ho)
0.33 It
Drawdown through weir?
N (Y or N)
Weir type
(unitless)
Coefficient of discharge (C„)
(unitless)
Length of weir (L)
It
Driving head (H)
ft
Pre -development 1-yr, 24-hr peak flow
0.67 ftolsec
Insufficient pre -development peak flow.
Post -development 1-yr, 24-hr peak Flow
- 0.37 ft3lsec
OK
Storage volume discharge rate (through discharge orifice or weir)
0.02 ftllsec
Storage volume drawdown time
4.10 days
OK, draws down in 2-5 days.
OK, drdwdown time is correct.
Additional Information
Vegetated side slopes
3 :1
OK
Vegetated shelf slope
10 :1
OK
Vegetated shelf width
10.0 fit
OK
Length of 0owpath to width ratio
3 :1
OK
Length to width ratio
3.0 :1
OK
Trash rack for overflow & orifice?
y (Y or N)
OK
Freeboard provided
1.0 ft
OK
Vegetated filter provided?
Y (Y or N)
OK
Recorded drainage easement provided?
Y (Y or N)
OK
Capures all runoff at ultimate build -out?
- Y (Y or N)
OK
Drain mechanism for maintenance or emergencies
Bottom Dram
Form SW401-Wet Detention Ba.snRev.5 Parts I. & II. Design Summary, Page 2 of 2

Permit No.
(to be provided by DWQ)
K
ITEMS
Please indicate the page or plan sheet numbers where the supporting documentation can be found. An incomplete submittal package will
result in a request for additional information. This will delay final review and approval of the project. Initial in the space provided to
indicate the following design requirements have been met. If the applicant has designated an agent, the agent may initial below. If a
requirement has not been met, attach justification.
Pagel Plan
nitials Sheet No.
1.
Plans (1" - 50' or larger) of the entire site showing:
- Design at ultimate build -out,
- Off -site drainage (if applicable),
- Delineated drainage basins (include Rational C coefficient per basin),
- Basin dimensions,
- Pretreatment system,
- High flow bypass system,
- Maintenance access,
- Proposed drainage easement and public right of way (ROW),
- Overflow device, and
- Boundaries of drainage easement.
2. Partial plan (1" = 30' or larger) and details for the wet detention basin showing:
- Outlet structure with trash rack or similar,
- Maintenance access,
- Permanent pool dimensions,
- Forebay and main pond with hardened emergency spillway,
- Basin cross-section,
- Vegetation specification for planting shelf, and
- Filter strip.
1
3. Section view of the wet detention basin (1" = 20' or larger) showing:
- Side slopes, 3:1 or lower,
- Pretreatment and treatment areas, and
- Inlet and outlet structures.
4. If the basin is used for sediment and erosion control during construction, clean out of the basin is specified
on the plans prior to use as a wet detention basin.
5. A table of elevations, areas, incremental volumes & accumulated volumes for overall pond and for Forebay,
to verity volume provided.
6. A construction sequence that shows how the wet detention basin will be protected from sediment until the
/7
entire drainage area is stabilized.
41 _4P}�
7. The supporting calculations.
8. A copy of the signed and notarized operation and maintenance (O&M) agreement.
9. A copy of the deed restrictions (if required).
10. A soils report that is based upon an actual field investigation, soil borings, and infiltration tests. County
soil maps are not an acceptable source of soils information.
Fnrm RW4n1-Wet Detention Basin-Rev.5 Part III. Required Items Checklist, Page 1 of 1

Permit Number:
(to be provided by DINQ)
Drainage Area Number:
Wet Detention Basin Operation and Maintenance Agreement
I will keep a maintenance record on this BMW. This maintenance record will be kept in a
log in a known set location. Any deficient BMP elements noted in the inspection will be
corrected, repaired or replaced immediately. These deficiencies can affect the integrity
of structures, safety of the public, and the removal efficiency of the BMP.
The wet detention basin system is defined as the wet detention basin,
pretreatment including forebays and the vegetated filter if one is provided.
This system (check one):
❑ does ® does not incorporate a vegetated filter at the outlet.
This system (check one):
® does ❑ does not incorporate pretreatment other than a forebay.
Important maintenance procedures:
— Immediately after the wet detention basin is established, the plants on the
vegetated shelf and perimeter of the basin should be watered twice weekly if
needed, until the plants become established (commonly six weeks).
— No portion of the wet detention pond should be fertilized after the first initial
fertilization that is required to establish the plants on the vegetated shelf.
— Stable groundcover should be maintained in the drainage area to reduce the
sediment load to the wet detention basin.
— If the basin must be drained for an emergency or to perform maintenance, the
flushing of sediment through the emergency drain should be minimized to the
maximum extent practical.
— Once a year, a dam safety expert should inspect the embankment.
After the wet detention pond is established, it should be inspected once a month and
within 24 hours after every storm event greater than 1.0 inches (or 1.5 inches if in a
Coastal County). Records of operation and maintenance should be kept in a known set
location and must be available upon request.
Inspection activities shall be performed as follows. Any problems that are found shall
be repaired immediately.
BMP element:
Potentialproblem:
Flow I will remediate theproblem:
The entire BMP
Trash/debris is present.
Remove the trash/debris.
The perimeter of the wet
Areas of bare soil and/or
Regrade the soil if necessary to
detention basin
erosive gullies have formed.
remove the gully, and then plant a
ground cover and water until it is
established. Provide lime and a
one-time fertilizer application.
Vegetation is too short or too
Maintain vegetation at a height of
long.
approximately six inches.
Form SW401-Wet Detention Basin O&M-Rev.4 Page l of 4

Permit Number:
(to be provided by DWQ)
Drainage Area Number:
BMP element:
Potentialproblem:
How I will remediate theproblem:
The inlet device: pipe or
The pipe is clogged.
Unclog the pipe. Dispose of the
swale
sediment off -site.
The pipe is cracked or
Replace the pipe.
otherwise damaged.
Erosion is occurring in the
Regrade the swale if necessary to
swale.
smooth it over and provide erosion
control devices such as reinforced
turf matting or riprap to avoid
future problems with erosion.
The forebay
Sediment has accumulated to
Search for the source of the
a depth greater than the
sediment and remedy the problem if
original design depth for
possible. Remove the sediment and
sediment storage.
dispose of it in a location where it
will not cause impacts to streams or
the BMP.
Erosion has occurred.
Provide additional erosion
protection such as reinforced turf
matting or riprap if needed to
prevent future erosion problems.
Weeds are present.
Remove the weeds, preferably by
hand. If pesticide is used, wipe it on
the plants rather than spraying.
The vegetated shelf
Best professional practices
Prune according to best professional
show that pruning is needed
practices
to maintain optimal plant
health.
Plants are dead, diseased or
Determine the source of the
dying.
problem: soils, hydrology, disease,
etc. Remedy the problem and
replace plants. Provide a one-time
fertilizer application to establish the
ground cover if a soil test indicates
it is necessary.
Weeds are present.
Remove the weeds, preferably by
hand. If pesticide is used, wipe it on
the plants rather than spraying.
The main treatment area
Sediment has accumulated to
Search for the source of the
a depth greater than the
sediment and remedy the problem if
original design sediment
possible. Remove the sediment and
storage depth.
dispose of it in a location where it
will not cause impacts to streams or
the BMP.
Algal growth covers over
Consult a professional to remove
50% of the area.
and control the al al growth.
Cattails, phragmites or other
Remove the plants by wiping them
invasive plants cover 50% of
with pesticide (do not spray).
the basin surface.
Form SW401-Wet Detention Basin O&M-Rev.4 Page 2 of 4

Permit Number:
(to be provided by DWQ)
Drainage Area Number:
BMP element:
Potentialproblem:
How I will remediate theproblem:
The embankment
Shrubs have started to grow
Remove shrubs immediately.
on the embankment.
Evidence of muskrat or
Use traps to remove muskrats and
beaver activity is present.
consult a professional to remove
beavers.
A tree has started to grow on
Consult a dam safety specialist to
the embankment.
remove the tree.
An annual inspection by an
Make all needed repairs.
appropriate professional
shows that the embankment
needs repair. if applicable)
The outlet device
Clogging has occurred.
Clean out the outlet device. Dispose
of the sediment off -site.
The outlet device is damaged
Repair or replace the outlet device.
The receiving water
Erosion or other signs of
Contact the local NC Division of
damage have occurred at the
Water Quality Regional Office, or
outlet.
the 401 Oversight Unit at 919-733-
1786.
The measuring device used to determine the sediment elevation shall be such
that it will give an accurate depth reading and not readily penetrate into
accumulated sediments.
When the permanent pool depth reads 1 feet in the main pond, the sediment
shall be removed.
When the permanent pool depth reads 1 feet in the forebay, the sediment shall
be removed.
BASIN DIAGRAM
(Jill in the blanks)
Sediment Removal
Bottom Elevalio -ft Min.
Sediment
Storage
FOREBAY
Permanent Pool Elevation
Pool
\ Sediment Removal Elevation Volume
Bottom Elevation
MAIN POND
1"n.
Sediment
Storage
Form SW401-Wet Detention Basin O&M-Rev.4 Page 3 of 4

Permit Number:
(to be provided by DWQ)
I acknowledge and agree by my signature below that 1 am responsible for the
performance of the 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.
Projec! name: Arlee Acres
l3M1' drainage area number: Basin 2
Print name: Jane H. Holland
Address: 7225 Rouse Road. Holly Springs. NC 27540
Phone:
Signature:
Note: The legally responsible party should not be a homeowners association unless more than 50% of
the lots have been sold and a resident of the subdivision has been named the president.
a Notary Public for the State of
County of , do hereby certify that
personally appeared before me this
day of , and acknowledge the due execution of the
forgoing wet detention basin maintenance requirements. Witness my hand and official
seal.
SEAL
My commission expires
Form SW401-Wet Detention Basin O&M-Rev.4 Page 4 of 4

PIPE CULVERT ANALYSIS
COMPUTATION OF CULVERT PERFORMANCE CURVE
January 8, 2009
PROGRAM INPUT DATA
DESCRIPTION
Culvert Diameter(ft).......................................
FHWA Chart Number ...........................................
FHWA Scale Number (Type of Culvert Entrance) ................
Manning's Roughness Coefficient (n-value)...................
Entrance Loss Coefficient of Culvert Opening ................
Culvert Length(ft).........................................
Invert Elevation at Downstream end of Culvert (ft)..........
Invert Elevation at Upstream end of Culvert (ft)............
Culvert Slope(ft/ft).......................................
Starting Flow Rate(cfs)....................................
Incremental Flow Rate(cfs).................................
Ending Flow Rate(cfs)......................................
Starting Tailwater Depth(ft) ...............................
Incremental Tailwater Depth(ft)............................
Ending Tailwater Depth(ft).................................
COMPUTATION RESULTS
Flow
Rate
(cfs)
---------_-----------------------------
21 0
Tailwater
Depth
(ft)
n.D
Headwater (ft)
Inlet Outlet
Control Control
3.11 11 K" 2.29
22.0
0.0
3.29
3.12
23.0
0.0
3.47
2.4'3
24.0
0.0
3.66
2.51
25.0
0.0
3.86
2.6
26.0
0.0
4.06
2.67
27.0
0.0
4.28
2.75
28.0
0.0
4.5
2.83
29.0
0.0
4.73
2.91
30.0
0.0
4.97
3.0
31.0
0.0
5.21
3.08
32.0
0.0
5.47
3.16
33.0
0.0
5.73
3.26
34.0
0.0
6.0
3.35
35.0
0.0
6.28
3.44
36.0
0.0
6.56
3.53
37.0
0.0
6.86
3.63
38.0
0.0
7.16
3.73
39.0
0.0
7.47
3.82
40.0
0.0
7.79
3.93
41.0
0.0
8.11
4.03
VALUE
2.0
1
1
0.013
0.5
25.0
417.4
417.5
0.004
21.0
1.0
41.0
Normal
Critical
Depth
at
Outlet
Depth
Depth
Outlet
Velocity
(ft)
(ft)
(ft)
(fps)
-----------------------------_-----
2.0
1.64
2.0
6.68
2.0
1.68
2.0
7.0
2.0
1.71
2.0
7.32
2.0
1.74
2.0
7.64
2.0
1.76
2.0
7.96
2.0
1.79
2.0
8.28
2.0
1.81
2.0
8.59
2.0
1.83
2.0
8.91
2.0
1.85
2.0
9.23
2.0
1.86
2.0
9.55
2.0
1.88
2.0
9.87
2.0
1.89
2.0
10.19
2.0
1.9
2.0
10.5
2.0
1.91
2.0
10.82
2.0
1.92
2.0
11.14
2.0
1.93
2.0
11.46
2.0
1.94
2.0
11.76
2.0
1.94
2.0
12.1
2.0
1.95
2.0
12.41
2.0
1.95
2.0
12.73
2.0
1.96
2.0
13.05
-------------------------------=------------------------------ -----
HYDROCALC Hydraulics for Windows, Version 1.2 Copyright (c) 1996
Dodson s Associates, Inc., 5629 FM 1960 West, Suite 314, Houston, TX 77069
Phone:[phone], Fax:[phone], Email:[e-mail]
All Rights Reserved.

Open Channel Flow Worksheet
Project: Arles Acres
Location:
Basin 2 - Emergency Spillway
Design Storm
25 yr - Perm Liner
DA
Ir 110
125 C 02 Q10 021
(ac)
(inlhr) (in/hr)
(in/hr) (cfs) (cfs) (cfs)
7.30
5.76 7.20
8.20 0.40 16.82 21.02 23.94
Mannings Equation
Q2
16.82
cfs
USerData.' Calculated Value
Q10
21,02
ofs
Q25
23.94
cfs
Design Flow
24.00
cfs
Mannings n
0.04
Enter the Design Flow value within the Solver Window. Click Tools, Select and
Bottom Width
12
feet
Click Solver, enter "Value of', then click Solve Button. Mannings Equation will
Depth of Flow
0.241
feet
be solved for Depth of Flow.
Channel Slope
0.33
ft./ft.
Side Slope
3
H:V
Area of Flow
3.03
sq. ft.
Wetted Perimeter
13.51
feet
Surface Width
13.43
feet
Hydraulic Radius
0.22
feet
-
Kinematic Wave Speed
10.61
ft./sec.
Velocity
7.91
ft./sec.
Vel >= 4 fps - Perm Liner Required
Shear Stress
4.91
Ib./sq.ft.
NAG SC250, Shear stress < 8.00 , Velocity <15 fps
VR Product
1.78
Manning's Roughness Coefficients n
Permissible Unit Shear Stress (lb./sq.ft.)
Lining Type
Depth of Flow Range
(feet) Lining Type
0-0.5 0.5-2.0
>2.0
Bare Soil
0.023 0.02
0.02 Bare Soil
NA
Jute Net with straw
0.028 0.022
0.019 Jule Net with straw
0.45
Straw with Net
0.065 0.033
0.025 Straw with Net
1.45
Curled Wood Matting
0.066 0,035
0,028 Curled Wood Matting
1.55
Synthetic Matting
0,036 0.025
0.021 Synthetic Matting
2.00
Riprap 6" D5o
0.104 0.069
0.035 Riprap 6" D5o
2.00
Riprap 12" D5o
0.078
0.04 Riprap 9" D50
3.00
Riprap 12" D5o
4.00
North American Green
Riprap 15" D50
5.00
S75
0,055 .055-.021
0,021 Riprap 18" D50
6.00
SC 150
0.05 .05--.018
0.018 Riprap 21" D50
7.80
SC 15OBN
0.05 .05-.018
0.018 Riprap 24" D50
8.00
C125
0,022 .022-.014
0.014 S75
1.55
C125BN
0.022 .022-.014
0.014 SC150
2.00
P300
.049-.034 .034-.020
0.02 SC150BN
2.10
SC250
0,04 .040-.012
0.011 C125
2.25
C125BN
2.35
P300
8.00
SC250
8.00

BASIN2STORAGE Raleigh 6 hr 25yr Rainfall=4.62"
Prepared by John A.K. Tucker, PE
HydroCAD® 8.50 s/n 004345 © 2007 HydroCAD Software Solutions LLC
Stage -Area -Storage for Pond 3P: Basin No. 1
Elevation
Surface
Storage
(feet)
(sq-ft)
(cubic -feet)
417.50
4,716
0
417.55
4,763
237
417.60
4,810
476
417.65
4,857
718
417.70
4,904
962
417.75
4,951
1,208
417.80
4,998
1,457
417.85
5,045
1,708
417.90
5,092
1,962
417.95
5,138
2,217
418.00
5,185
2,475
418.05
5,232
2,736
418.10
5,279
2,999
418.15
5,326
3,264
418.20
5,373
3,531
418.25
5,420
3,801
418.30
5,467
4,073
418.35
5,514
4,348
418.40
5,561
4,625
418.45
5,608
4,904
418.50
5,655
5,185
418.55
5,702
5,469
418.60
5,749
5,756
418.65
5,796
6,044
418.70
5,843
6,335
418.75
5,890
6,628
418.80
5,936
6,924
418.85
5,983
7,222
418.90
6,030
7,522
418.95
6,077
7,825
419.00
6,124
8,130
419.05
6,171
8,438
419.10
6,218
8,747
419.15
6,265
9,059
419.20
6,312
9,374
419.25
6,359
9,691
419.30
6,406
10,010
419.35
6,453
10,331
419.40
6,500
10,655
419.45
6,547
10,981
419.50
6,594
11,310
419.55
6,641
11,640
419.60
6,687
11,974
419.65
6,734
12,309
419.70
6,781
12,647
419.75
6,828
12,987
419.80
6,875
13,330
419.85
6,922
13,675
419.90
6,969
14,022
419.95
7,016
14,372
420.00
7,063
14,724
420.05
7,110
15,078
Elevation
Surface
Storage
(feet)
(sq-ft)
(cubic -feet)
420.10
7,157
15,435
420.15
7,204
15,794
420.20
7,251
16,155
420.25
7,298
16,519
420.30
7,345
16,885
420.35
7,392
17,253
420.40
7,439
17,624
420.45
7,485
17,997
420.50
7,532
18,373
420.55
7,579
18,750
420.60
7,626
19,131
420.65
7,673
19,513
420.70
7,720
19,898
420.75
7,767
20,285
420.80
7,814
20,675
420.85
7,861
21,066
420.90
8,580
21,478
420.95
9,300
21,925
421.00
10,019
22,407
421.05
10,738
22,926
421.10
11,458
23,481
421.15
12,177
24,072
421.20
12,253
24,683
421.25
12,329
25,297
421.30
12,405
25,916
421.35
12,482
26,538
421.40
12,558
27,164
421.45
12,634
27,794
421.50
12,710
28,427
421.55
12,786
29,065
421.60
12,862
29,706
421.65
12,939
30,351
421.70
13,015
31,000
421.75
13,091
31,653
421.80
13,167
32,309

BASIN2STORAGE
Prepared by John A.K. Tucker, PE
Raleigh 6 hr 25yr Rainfall=4.62"
Stage -Area -Storage for Pond 4P: FOREBAY
Elevation
Surface
Storage
(feet)
(sq-ft)
(cubic -feet)
417.50
841
0
417.55
870
43
417.60
899
87
417.65
928
133
417.70
957
180
417.75
986
228
417.80
1,015
278
417.85
1,045
330
417.90
1,074
383
417.95
1,103
437
418.00
1,132
493
418.05
1,161
551
418.10
1,190
609
418.15
1,219
669
418.20
1,248
731
418.25
1,277
794
418.30
1,306
859
418.35
1,335
925
418.40
1,364
992
418.45
1,393
1,061
418.50
1,422
1,132
418.55
1,452
1,204
418.60
1,481
1,277
418.65
1,510
1,352
418.70
1,539
1,428
418.75
1,568
1,506
418.80
1,597
1,585
418.85
1,626
1,665
418.90
1,655
1,747
418.95
1,684
1,831
419.00
1,713
1,916
419.05
1,742
2,002
419.10
1,771
2,090
419.15
1,800
2,179
419.20
1,830
2,270
419.25
1,859
2,362
419.30
1,888
2,456
419.35
1,917
2,551
419.40
1,946
2,647
419.45
1,975
2,746
419.50
2,004
2,845
419.55
2,033
2,946
419.60
2,062
3,048
419.65
2,091
3,152
419.70
2,120
3,257
419.75
2,149
3,364
419.80
2,178
3,472
419.85
2,208
3,582
419.90
2,237
3,693
419.95
2,266
3,806
420.00
2,295
3,920
420.05
2,324
4,035
Elevation
Surface
Storage
(feet)
(sq-ft)
(cubic -feet)
420.10
2,353
4,152
420.15
2,382
4,270
420.20
2,411
4,390
420.25
2,440
4,512
420.30
2,469
4,634
420.35
2,498
4,758
420.40
2,527
4,884
420.45
2,556
5,011
420.50
2,585
5,140
420.55
2,615
5,270
420.60
2,644
5,401
420.65
2,673
5,534
420.70
2,702
5,668
420.75
2,731
5,804
420.80
2,760
5,942
420.85
2,789
6,080
420.90
3,064
6,227
420.95
3,340
6,387
421.00
3,616
6,561
421.05
3,891
6,748
421.10
4,167
6,950
421.15
4,442
7,165

Permit No.
uo be provioed by DWQJ
RMA
AWAW
O�OF�OF�
G
NCDENR
STORMWATER MANAGEMENT PERMIT APPLICATION FORM \r►
401 CERTIFICATION APPLICATION FORM
WET DETENTION BASIN SUPPLEMENT'
This form must be filled out, printed and submitted.
The Required Items
Checklist (Part III) must be printed, filled out and submitted along with all of the required information.
I. PROJECT INFORMATION
Project name
Arlee Acres
Contact person
John Tucker
Phone number
919 567 0483
Date
Drainage area number
Basin 3 r
I1..DESIGN INFORMATION
Site Characteristics
Drainage area
107,158 ff'
Impervious area, post -development
21,432 Its
%impervious
20.00 %
Design rainfall depth
1.0 in
Storage Volume: Non -SA Waters
Minimum volume required
2,054 ft3 OK
Volume provided
5,225 ft3
OK, volume provided is equal to or in excess of volume required.
Storage Volume: SA Waters
1.5' runoff volume
ft3
Pre -development 1-yr, 24-hr runoff
If3
Post -development 1-yr, 24-hr mnoff
ff3
Minimum volume required
0 113
Volume provided
g3
Peak Flow Calculations
Is the pre/post corral of the 1yr 24hr storm peak flow required? Y (Y or N)
1-yr, 24-hr rainfall depth
3.0 in
Rational C, pre -development
0.72 (unilless)
Rational C, post -development
0.40 (unitless)
Rainfall intensity: 1-yr, 24-hr storm
0.13 inlhr OK
Pre -development 1-yr, 24-hr peak flow
0.23 ft3/se,
Past -development 1-yr, 24-hr peak flow
0.13 ft3/Sec
Pre/Post 1-yr, 24-hr peak flow control
-0.10 ft3/sec
Elevations
Temporary pool elevation
425.50 bast
Permanent pool elevation
425.00 fmsl
SHWT elevation(approx. at the perm. pool elevation)
425.00 fmsl
Top of 10ft vegetated shelf elevation
425.50 fmsl
Bottom of 10ft vegetated shelf elevation
424.50 fmsl
Sediment cleanout, top elevation (bottom of pond)
420.50 fmsl
Sediment cleanout, bottom elevation
419.50 fmsl
Sediment storage provided
1.00 It
Is there additional volume stored above the state -required temp. pool?
n (Y or N)
Elevation of the top of the additional volume
fmsl
Form SW401-Wet Detention Basin-Rev.5 Parts 1.311. Design Summary, Page 1 of 2

Permit No.
no be Amvlded by Dwol
II. DESIGN INFORMATION
Surface Areas
Area, temporary pool
10,982 ft�
Area REQUIRED, permanent pool
1,800 ft?
SAIDA ratio
1.68 (unitless)
Area PROVIDED, permanent pool, A.,
10,248 if
OK
Area, bottom of 1 Oft vegetated shelf, Aw mnr
5,829 ft'
Area, sediment cleanout, top elevation (bottom of pond), A,
' ' 1,758 ft`
Volumes
Volume, temporary pool
5,225 it'
OK
Volume, permanent pool, V.-PW
19,260 ft'
Volume, forebay (sum of forebays 0 more than one forebay)
3,852 ft3
Forebay %of permanent pool volume
20.0% %
OK
SAIDA Table Data
Design TSS removal
90 %
Coastal SAIDA Table Used?
(Y or N)
MountairdPiedmont SAIDA Table Used?
Y (Y or N)
SAIDA ratio
1.68 (unitless)
Average depth (used in SAIDA table):
Calculation option 1 used? (See Figure 10-2b)
N (Y or N)
Volume, permanent pool, Var so
W
Area provided, permanent pool, A._,.
ft`
Average depth calculated
ft
Average depth used in SAIDA, dn., (Round to nearest 0.5ft)
ft
Calculation option 2 used? (See Figure 10-2b)
Y (Y or N)
Area provided, permanent pool, Ara,,, cam
10,248 ft`
OK
Area, bottom of 1Oft vegetated shelf, Apt et
5,829 ft'
OK
Area, sediment cleanout, top elevation (bottom of pond), A, aria
1,758 ft'
OK
'Depth' (distance bIw bottom of 1 Oft shelf and top of sediment)
4.00 It
OK
Average depth calculated
3.00 it
OK
Average depth used in SAIDA, d., (Round to nearest 0.511)
3.0 It
OK
Drawdown Calculations
Drawdown through orifice?
Y (Y or N)
Diameter of office (if circular)
1.00 in
Area of orifice (if-noncircular)
in'
Coefficient of discharge (Co)
0.60 (unitless)
Driving head (Ho)
0.50 It
Dmwdown through weir?
N (Y or N)
Weir type
(unitless)
Coefficient of discharge (C..)
(unitless)
Length of weir (L)
ft
Driving head (H)
It
Pre -development 1-yr, 24-hr peak Bow
0.67 ft3/sec
OK
Post -development 1-yr, 24-hr peak flow
0.13 ft/sec
Insufficient post -development peak flow.
Storage volume discharge rate (through discharge orifice or weir)
'0.02 ft/sec
Storage volume drawdown time
2.95 days
OK, draws down in 2-5 days.
OK, drawdown time is correct.
Additional Information
Vegetated side slopes
3 :1
OK
Vegetated shelf slope
10 :1
OK
Vegetated shelf width
10.0 It
OK
Length of towpath to width ratio
3 :1
OK
Length to width ratio
- 3.0 :1
OK
Trash rack for overflow 8 orifice?
y (Y or N)
OK
Freeboard provided
1.0 ft
OK
Vegetated filter provided?
Y (Y or N)
OK
Recorded drainage easement provided?
Y (Y or N)
OK
Capures all runoff at ultimate build -out?
'..' Y'. (Y or N)
OK
Drain mechanism for maintenance or emergencies
Bottom Drain
'.
Form SW401-Wet Detention Bas,,Rev.5 Pads I. 3IL Design Summary, Page 2 of 2

Permit No.
(to be provided by DWQ)
Please indicate the page or plan sheet numbers where the supporting documentation can be found. An incomplete submittal package will
result in a request for additional information. This will delay final review and approval of the project. Initial in the space provided to
indicate the following design requirements have been met. If the applicant has designated an agent, the agent may initial below. If a
requirement has not been met, attach justification.
Pagel Plan
Initials Sheet No.
1.
Plans (1" - 50' or larger) of the entire site showing:
- Design at ultimate build -out,
- Off -site drainage (if applicable),
- Delineated drainage basins (include Rational C coefficient per basin),
- Basin dimensions,
- Pretreatment system,
- High flow bypass system,
- Maintenance access,
- Proposed drainage easement and public right of way (ROW),
- Overflow device, and
- Boundaries of drainage easement.
�! �r
2. Partial plan (1" = 30' or larger) and details for the wet detention basin showing:
- Outlet structure with trash rack or similar,
- Maintenance access,
- Permanent pool dimensions,
- Forebay and main pond with hardened emergency spillway,
- Basin cross-section,
- Vegetation specification for planting shelf, and
- Filter strip.
v/
4 6 /
3. Section view of the wet detention basin (1" = 20' or larger) showing:
-Side slopes, 3:1 or lower,
- Pretreatment and treatment areas, and
- Inlet and outlet structures.
4. If the basin is used for sediment and erosion control during construction, clean out of the basin is specified
on the plans prior to use as a wet detention basin.
r`L_
5. A table of elevations, areas, incremental volumes & accumulated volumes for overall pond and for forebay,
to verify volume provided.
6. A construction sequence that shows how the wet detention basin will be protected from sediment until the
entire drainage area is stabilized.
7. The supporting calculations.
L� ry CR t--
8. A copy of the signed and notarized operation and maintenance (0&M) agreement.
j (e-
9. A copy of the deed restrictions (if required).
10. A soils report that is based upon an actual field investigation, soil borings, and infiltration tests. County
soil maps are not an acceptable source of soils information.
Fnrm SW4ni-Wet Detention Basin-Rev.5 Part III. Required Items Checklist, Page t of 1

Permit Number:
(to be provided by DWQ)
Drainage Area Number:
Wet Detention Basin Operation and Maintenance Agreement
I will keep a maintenance record on this BMP. This maintenance record will be kept in a
log in a known set location. Any deficient BMP elements noted in the inspection will be
corrected, repaired or replaced immediately. These deficiencies can affect the integrity
of structures, safety of the public, and the removal efficiency of the BMP.
The wet detention basin system is defined as the wet detention basin,
pretreatment including forebays and the vegetated filter if one is provided.
This system (check one):
❑ does ® does not incorporate a vegetated filter at the outlet.
This system (check one):
® does ❑ does not incorporate pretreatment other than a forebay.
Important maintenance procedures:
— Immediately after the wet detention basin is established, the plants on the
vegetated shelf and perimeter of the basin should be watered twice weekly if
needed, until the plants become established (commonly six weeks).
— No portion of the wet detention pond should be fertilized after the first initial
fertilization that is required to establish the plants on the vegetated shelf.
— Stable groundcover should be maintained in the drainage area to reduce the
sediment load to the wet detention basin.
— If the basin must be drained for an emergency or to perform maintenance, the
flushing of sediment through the emergency drain should be minimized to the
maximum extent practical.
— Once a year, a dam safety expert should inspect the embankment.
After the wet detention pond is established, it should be inspected once a month and
within 24 hours after every storm event greater than 1.0 inches (or 1.5 inches if in a
Coastal County). Records of operation and maintenance should be kept in a known set
location and must be available upon request.
Inspection activities shall be performed as follows. Any problems that are found shall
be repaired immediately.
BMP element:
Potentialproblem:
How I will remediate theproblem:
The entire BMP
Trash/debris is present.
Remove the trash/debris.
The perimeter of the wet
Areas of bare soil and/or
Regrade the soil if necessary to
detention basin
erosive gullies have formed.
remove the gully, and then plant a
ground cover and water until it is
established. Provide lime and a
one-time fertilizer application.
Vegetation is too short or too
Maintain vegetation at a height of
long.
approximately six inches.
Form SW401-Wet Detention Basin O&M-Rev.4 Page 1 of 4

Permit Number:
(to be provided by DWQ)
Drainage Area Number:
BMP element:
Potentialproblem:
How I will remediate theproblem:
The inlet device: pipe or
The pipe is clogged.
Unclog the pipe. Dispose of the
swale
sediment off -site.
The pipe is cracked or
Replace the pipe.
otherwise damaged.
Erosion is occurring in the
Regrade the swale if necessary to
swale.
smooth it over and provide erosion
control devices such as reinforced
turf matting or riprap to avoid
future problems with erosion.
The forebay
Sediment has accumulated to
Search for the source of the
a depth greater than the
sediment and remedy the problem if
original design depth for
possible. Remove the sediment and
sediment storage.
dispose of it in a location where it
will not cause impacts to streams or
the BMP.
Erosion has occurred.
Provide additional erosion
protection such as reinforced turf
matting or riprap if needed to
prevent future erosion problems -
Weeds are present.
Remove the weeds, preferably by
hand. If pesticide is used, wipe it on
the plants rather than spraying.
The vegetated shelf
Best professional practices
Prune according to best professional
show that pruning is needed
practices
to maintain optimal plant
health.
Plants are dead, diseased or
Determine the source of the
dying.
problem: soils, hydrology, disease,
etc. Remedy the problem and
replace plants. Provide a one-time
fertilizer application to establish the
ground cover if a soil test indicates
it is necessary.
Weeds are present.
Remove the weeds, preferably by
hand. If pesticide is used, wipe it on
the plants rather than spraying.
The main treatment area
Sediment has accumulated to
Search for the source of the
a depth greater than the
sediment and remedy the problem if
original design sediment
possible. Remove the sediment and
storage depth.
dispose of it in a location where it
will not cause impacts to streams or
the BMP.
Algal growth covers over
Consult a professional to remove
50% of the area.
and control the algal growth.
Cattails, phragmites or other
Remove the plants by wiping them
invasive plants cover 50% of
with pesticide (do not spray).
the basin surface.
Form SW401-Wet Detention Basin O&M-Rev.4 Page 2 of 4

Permit Number:
(to be provided by DWQ)
Drainage Area Number:
BMP element:
Potentialproblem:
How I will remediate theproblem:
The embankment
Shrubs have started to grow
Remove shrubs immediately.
on the embankment.
Evidence of muskrat or
Use traps to remove muskrats and
beaver activity is present.
consult a professional to remove
beavers.
A tree has started to grow on
Consult a dam safety specialist to
the embankment.
remove the tree.
An annual inspection by an
Make all needed repairs.
appropriate professional
shows that the embankment
needs repair. if applicable)
The outlet device
Clogging has occurred.
Clean out the outlet device. Dispose
of the sediment off -site.
The outlet device is damaged
Repair or replace the outlet device.
The receiving water
Erosion or other signs of
Contact the local NC Division of
damage have occurred at the
Water Quality Regional Office, or
outlet.
the 401 Oversight Unit at 919-733-
1756.
The measuring device used to determine the sediment elevation shall be such
that it will give an accurate depth reading and not readily penetrate into
accumulated sediments.
When the permanent pool depth reads 1 feet in the main pond, the sediment
shall be removed.
When the permanent pool depth reads 1 feet in the forebay, the sediment shall
be removed.
Sediment Removal
Bottom
-------------- ±-
FOREBAY
BASIN DIAGRAM
(fill in the blanks)
ft Min.
Sediment
Storage
Permanent Pool Elevation
Pool
Sediment Removal Elevation Volume
Bottom Elevation
MAIN POND
1511
Storage
Form SW401-Wet Detention Basin O&M-Rev.4 Page 3 ol'4

Permit Number:
(to be provided by DWQ)
I acknowledge and agree by my signature below that 1 am responsible for the
performance of the 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.
Projecl name: Arlee Acres
BMP drainage area number:
Print name: Jane H. Holland
Title:
Address: 7225 Rouse Road, Holly Springs, NC 27540
Phone:
Signau
Date:
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, , a Notary Public for the State of
County of , do hereby certify that
personally appeared before me this
day of I , and acknowledge the due execution of the
forgoing wet detention basin maintenance requirements. Witness my hand and official
seal,
SEAL
My commission
Form SW401-Wet Detention Basin O&M-Rev.4 Page 4 of 4

Open Channel Flow Worksheet
Project: Adee Acres
Location: Basin 3 - Emergency Spillway
Design Storm 25yr - Perm Liner
DA 12 Ito 125 C 02 Qto Q25
(ac) (in/hr) (in/hr) (in/hr) (cfs) (cfs) (cfs)
2.40 5.76 7.20 8.20 0.40 5.53 6.91 7.87
Mannings Equation
02
S5:
Did
6:9'
025
VM
Design Flow
f 8:0(
Mannings n
-ME0 D.
Depth of Flow
Channel Slope
Side Slope
Area of Flow
Wetted Perimeter
Surface Width
Hydraulic Radius
Kinematic Wave Speed
Velocity
Shear Stress
VR Product
Manning's Roughness
3 H:V
1 :76 sq. ft.
0.141 feet
Enter the Design Flow value within the Solver Window. Click Tools, Select and
Click Solver, enter "Value of', then click Solve Button. Mannings Equation will
be solved for Depth of Flow.
ff./sec. Vel >= 4 fps - Perm Liner Required
to/sq.ft. NAG SC250, Shear stress < 8.00 , Velocity <15 fps
Permissible Unit Shear Stress (Ib./sq.ft.)
Lining Type
Depth of Flow Range (feet) Lining Type
0-0.5 0.5-2.0
-2.0
Bare Soil
0.023 0.02
0.02 Bare Soil
NA
Jute Net with straw
0.028 0.022
0.019 Jute Net with straw
0,45
Straw with Net
0.065 0,033
0,025 Straw with Net
1.45
Curled Wood Matting
0.066 0.035
0.028 Curled Wood Matting
1.55
Synthetic Matting
0.036 0.025
0.021 Synthetic Matting
2.00
Riprap 6" Dso
0,104 0.069
0,035 Riprap 6" Dw
2.00
Riprap 12" D50
0.078
0.04 Riprap 9" Dso
3.00
Riprap 12" Dso
4.00
North American Green
Riprap 15" D50
5,00
S75
0.055 .055-.021
0.021 Riprap 18" D5o
6.00
SC 150
0.05 .05--.018
0,018 Riprap 21" Dso
7.80
SC 150BN
0.05 .05-.018
0.018 Riprap 24" Dso
8.00
C125
0.022 .022-.014
0.014 S75
1.55
C125BN
0.022 .022-.014
0.014 SC150
2.00
P300
.049-.034 .034-.020
0,02 SC150BN
2.10
SC250
0,04 .040-.012
0.011 C125
2.25
C125BN
2.35
P300
8.00
SC250
8.00

v
PIPE CULVERT ANALYSIS
COMPUTATION OF CULVERT PERFORMANCE CURVE
January 8, 2009
------------------------------
------------------------------------------------------------------------
PROGRAM INPUT DATA
DESCRIPTION
Culvert Diameter(ft).......................................
FHWA Chart Number ...........................................
FHWA Scale Number (Type of Culvert Entrance) ................
Manning's Roughness Coefficient (n-value)...................
Entrance Loss Coefficient of Culvert Opening ................
Culvert Length(ft).........................................
Invert Elevation at Downstream end of Culvert (ft)..........
Invert Elevation at Upstream end of Culvert (ft)............
Culvert Slope(ft/ft).......................................
Starting Flow Rate(cfs)....................................
Incremental Flow Rate(cfs).................................
Ending Flow Rate(cfs)......................................
Starting Tailwater Depth(ft) ...............................
Incremental Tailwater Depth(ft)............................
Ending Tailwater Depth(ft).................................
VALUE
_-2.0--
1
1
0.013
0.5
25.0
417.4
417.5
0. 004
7.0
1.0
27.0
COMPUTATION
RESULTS
Flow
Tailwater
Headwater
(ft)
Normal
Critical
Depth
at
Outlet
Rate
Depth
Inlet
Outlet
Depth
Depth
Outlet
Velocity
(cfs)
(ft)
Control
Control
(ft)
(ft)
(ft)
(fps)
-"---------------------------------
7.0
0.0
1.35
1.47
0.99
0.94
0.94
4.83
8.0
0.0
1.46
1.58
1.07
1.01
1.01
5.05
9.0
0.0
1.58
1.69
1.15
1.07
1.07
5.26
10.0
0.0
1.69
1.8
1.23
1.13
1.13
5.45
11.0
0.0
1.8
1.9
1.31
1.19
1.19
5.65
12.0
0.0
1.91
2.01
1.4
1.24
1.24
5.84
13.0
0.0
2.03
2.11
1.5
1.3
1.3
6.03
14.0
0.0
2.14
2.22
1.6
1.35
1.35
6.22
15.0
0.0
2.25
2.32
1.74
1.4
1.4
6.41
16.0
0.0
2.41
2.42
2.0
1.44
1.44
6.6
17.0
0.0
2.55
2.53
2.0
1.49
2.0
5.41
18.0
0.0
2.64
2.64
2.0
1.53
2.0
5.73
19.0
0.0
2.79
2.75
2.0
1.57
2.0
6.05
20.0
0.0
2.95
2.87
2.0
1.61
2.0
6.37
21.0
0.0
3.11
2.99
2.0
1.64
2.0
6.68
22.0
0.0
3.29
3.12
2.0
1.68
2.0
7.0
23.0
0.0
3.47
2.43
2.0
1.71
2.0
7.32
24.0
0.0
3.66
2.51
2.0
1.74
2.0
7.64
25.0
0.0
3.86
2.6
2.0
1.76
2.0
7.96
26.0
0.0
4.06
2.61
2.0
1.79
2.0
8.28
27.0
0.0
4.28
2.75
2.0
1.81
2.0
8.59
---- -------------------------------------------------------------------------
HYDROCALC Hydraulics for Windows, Version 1.2 Copyright (c) 1996
Dodson & Associates, Inc., 5629 FM 1960 West, Suite 314, Houston, Tx 77069
Phone:[phone], Fax:[phone], Email:[e-mail]
All Rights Reserved.

Permit Number:
(to be provided by DWQ)
Drainage Area Number: 1
Bioretention Operation and Maintenance Agreement
I will keep a maintenance record on this BMP. This maintenance record will be kept in a
log in a known set location. Any deficient BMP elements noted in the inspection will be
corrected, repaired or replaced immediately. These deficiencies can affect the integrity
of structures, safety of the public, and the removal efficiency of the BMP.
Important operation and maintenance procedures:
— Immediately after the bioretention cell is established, the plants will be watered
twice weekly if needed until the plants become established (commonly six
weeks)-
- Snow, mulch or any other material will NEVER be piled on the surface of the
bioretention cell.
— Heavy equipment will NEVER be driven over the bioretention cell.
— Special care will be taken to prevent sediment from entering the bioretention cell.
— Once a year, a soil test of the soil media will be conducted.
After the bioretention cell is established, I will inspect it once a month and within 24
hours after every storm event greater than 1.0 inches (or 1.5 inches if in a Coastal
County). Records of operation and maintenance will be kept in a known set location
and will be available upon request.
Inspection activities shall be performed as follows. Any problems that are found shall
be repaired immediately.
BMP element-
Potentialproblems:
How I will remediate theproblem:
The entire BMP
Trash/debris is present.
Remove the trash/debris.
The perimeter of the
Areas of bare soil and/or
Regrade the soil if necessary to
bioretention cell
erosive gullies have formed.
remove the gully, and then plant a
ground cover and water until it is
established. Provide lime and a
one-time fertilizer application.
The inlet device: pipe,
The pipe is clogged (if
Unclog the pipe. Dispose of the
stone verge or swale
applicable).
sediment off -site.
The pipe is cracked or
Replace the pipe.
otherwise damaged (if
applicable).
Erosion is occurring in the
Regrade the swale if necessary to
swale (if applicable).
smooth it over and provide erosion
control devices such as reinforced
turf matting or riprap to avoid
future problems with erosion.
Stone verge is clogged or
Remove sediment and clogged
covered in sediment (if
stone and replace with clean stone.
applicable).
Form SW401-13ioretention O&M-Rev.3
Page 1 of 4

BMP element:
The pretreatment area
The bioretention cell:
vegetation
The bioretention cell:
soils and mulch
Potential problems:
Flow is bypassing
pretreatment area and/or
gullies have formed.
Sediment has accumulated to
a depth greater than three
inches.
Erosion has occurred
Weeds are present.
Best professional practices
show that pruning is needed
to maintain optimal plant
health.
Plants are dead, diseased or
dying.
Tree stakes/wires are present
six months after planting.
Mulch is breaking down or
has Floated away.
Soils and/or mulch are
clogged with sediment.
An annual soil test shows that
pH has dropped or heavy
metals have accumulated in
the soil media.
How I will remediate the problem:
Regrade if necessary to route all
Flow to the pretreatment area.
Restabilize the area after grading.
Search for the source of the
sediment and remedy the problem if
possible. Remove the sediment and
restabilize the pretreatment area.
Provide additional erosion
protection such as reinforced turf
matting or riprap if needed to
prevent future erosion problems.
Remove the weeds, preferably by
hand.
Prune according to best professional
practices.
Determine the source of the
problem: soils, hydrology, disease,
etc. Remedy the problem and
replace plants. Provide a one-time
fertilizer application to establish the
ground cover if a soil test indicates
it is necessary.
Remove tree stake/wires (which
can kill the tree if not removed).
Spot mulch if there are only random
void areas. Replace whole mulch
layer if necessary. Remove the
remaining much and replace with
triple shredded hard wood mulch at
a maximum depth of three inches.
Determine the extent of the clogging
- remove and replace either just the
top layers or the entire media as
needed. Dispose of the spoil in an
appropriate off -site location. Use
triple shredded hard wood mulch at
a maximum depth of three inches.
Search for the source of the
sediment and remedy the problem if
Dolomitic lime shall be applied as
recommended per the soil test and
toxic soils shall be removed,
disposed of properly and replaced
with new planting media.
Form SW401-Bioretention O&M-Rev.3
Page 2 of 4

BMP element:
Potentialproblems:
How 1 will remediate theproblem:
The underdrain system
Clogging has occurred.
Wash out the underdrain system.
if applicable)
The drop inlet
Clogging has occurred.
Clean out the drop inlet. Dispose of
the sediment off -site.
The drop inlet is damaged
Repair or replace the drop inlet.
The receiving water
Erosion or other signs of
Contact the NC Division of Water
damage have occurred at the
Quality 401 Oversight Unit at 919-
outlet.
733-1786.
Form SW401-Bioretention O&M-Rev.3
Page 3 of 4

Permit Number:
(to be provided by DWQ)
I acknowledge and agree by my signature below that I am responsible for the
performance of the 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.
Project name: Arlee Acres
BMP drainage area number: 1
Print
Title: Owner
Address: 7225 Rouse Road, Holly Springs, NC 27540
- JS 2 -
Si
Date: ;z 1 /too9
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.
a Notary Public for the State of
County of ��p_ do hereby certify that
�h
. personally appeared before me this
�OOq , and acknowledge the due execution of the
forgoing bioretention maintenance requirements. Witness my hand and official seal,
SEAL
My commission expires
Page 4 of 4
Form SW401-Bioretention I&M-Rev. 2

f'
Permit Number:
(to be provided by DWQ)
Drainage Area Number: 2
Wet Detention Basin Operation and Maintenance Agreement
I will keep a maintenance record on this BMP. This maintenance record will be kept in a
log in a known set location. Any deficient BMP elements noted in the inspection will be
corrected, repaired or replaced immediately. These deficiencies can affect the integrity
of structures, safety of the public, and the removal efficiency of the BMP.
The wet detention basin system is defined as the wet detention basin,
pretreatment including forebays and the vegetated filter if one is provided.
This system (check one):
❑ does ® does not incorporate a vegetated filter at the outlet.
This system (check one):
® does ❑ does not incorporate pretreatment other than a forebay.
Important maintenance procedures:
— Immediately after the wet detention basin is established, the plants on the
vegetated shelf and perimeter of the basin should be watered twice weekly if
needed, until the plants become established (commonly six weeks).
— No portion of the wet detention pond should be fertilized after the first initial
fertilization that is required to establish the plants on the vegetated shelf.
— Stable groundcover should be maintained in the drainage area to reduce the
sediment load to the wet detention basin.
— If the basin must be drained for an emergency or to perform maintenance, the
flushing of sediment through the emergency drain should be minimized to the
maximum extent practical.
— Once a year, a dam safety expert should inspect the embankment.
After the wet detention pond is established, it should be inspected once a month and
within 24 hours after every storm event greater than 1.0 inches (or 1.5 inches if in a
Coastal County). Records of operation and maintenance should be kept in a known set
location and must be available upon request.
Inspection activities shall be performed as follows. Any problems that are found shall
be repaired immediately.
BMP element:
Potentialproblem:
How I will remediate theproblem:
The entire BMP
Trash/debris is present.
Remove the trash/debris.
The perimeter of the wet
Areas of bare soil and/or
Regrade the soil if necessary to
detention basin
erosive gullies have formed.
remove the gully, and then plant a
ground cover and water until it is
established. Provide lime and a
one-time fertilizer application.
Vegetation is too short or too
Maintain vegetation at a height of
long.
approximately six inches.
Form SW401-Wet Detention Basin O&M-Rev.4
Page 1 of 4

Permit Number:
(to be provided by DWQ)
Drainage Area Number:
BMP element:
Potentialproblem:
How I will remediate theproblem:
The inlet device: pipe or
The pipe is clogged.
Unclog the pipe. Dispose of the
swale
sediment off -site.
The pipe is cracked or
Replace the pipe.
otherwise damaged.
Erosion is occurring in the
Regrade the swale if necessary to
swale.
smooth it over and provide erosion
control devices such as reinforced
turf matting or riprap to avoid
future problems with erosion.
The forebay
Sediment has accumulated to
Search for the source of the
a depth greater than the
sediment and remedy the problem if
original design depth for
possible. Remove the sediment and
sediment storage.
dispose of it in a location where it
will not cause impacts to streams or
the BMP.
Erosion has occurred.
Provide additional erosion
protection such as reinforced turf
matting or riprap if needed to
prevent future erosion problems.
Weeds are present.
Remove the weeds, preferably by
hand. If pesticide is used, wipe it on
the plants rather than spraying.
The vegetated shelf
Best professional practices
Prune according to best professional
show that pruning is needed
practices
to maintain optimal plant
health.
Plants are dead, diseased or
Determine the source of the
dying.
problem: soils, hydrology, disease,
etc. Remedy the problem and
replace plants. Provide a one-time
fertilizer application to establish the
ground cover if a soil test indicates
it is necessary.
Weeds are present.
Remove the weeds, preferably by
hand. if pesticide is used, wipe it on
the plants rather than spraying.
The main treatment area
Sediment has accumulated to
Search for the source of the
a depth greater than the
sediment and remedy the problem if
original design sediment
possible. Remove the sediment and
storage depth.
dispose of it in a location where it
will not cause impacts to streams or
the BMP.
Algal growth covers over
Consult a professional to remove
50 % of the area.
and control the algal growth.
Cattails, phragmites or other
Remove the plants by wiping them
invasive plants cover 50% of
with pesticide (do not spray).
the basin surface.
Form SW401-Wet Detention Basin O&M-Rev.4
Page 2 of 4

Permit Number:
(to be provided by DWQ)
Drainage Area Number:
BMP element:
Potentialproblem:
How I will remediate theproblem:
The embankment
Shrubs have started to grow
Remove shrubs immediately.
on the embankment.
Evidence of muskrat or
Use traps to remove muskrats and
beaver activity is present.
consult a professional to remove
beavers.
A tree has started to grow on
Consult a dam safety specialist to
the embankment.
remove the tree.
An annual inspection by an
Make all needed repairs.
appropriate professional
shows that the embankment
needs repair. if applicable)
The outlet device
Clogging has occurred.
Clean out the outlet device. Dispose
of the sediment off -site.
The outlet device is damaged
Repair or replace the outlet device.
The receiving water
Erosion or other signs of
Contact the local NC Division of
damage have occurred at the
Water Quality Regional Office, or
outlet.
the 401 Oversight Unit at 919-733-
1786.
The measuring device used to determine the sediment elevation shall be such
that it will give an accurate depth reading and not readily penetrate into
accumulated sediments.
When the permanent pool depth reads feet in the main pond, the
sediment shall be removed.
When the permanent pool depth reads feet in the forebay, the sediment
shall be removed
Sediment Removal
Bottom
418.50
---------------
FORF,BAY
BASIN DIAGRAM
(fill in the blanks)
t--ft Min.
Sediment
Storage
Permanent Pool Elevation 421.00
Pool
Sediment Removal Elevation 418.50 Volum,
Bottom Elevation 417.50 1 1-ft
MAIN POND
Storage
Form SW401-Wet Detention Basin O&M-Rev.4
Page 3 of 4

Permit Number:
(to be provided by DWQ)
I acknowledge and agree by my signature below that I am responsible for the
performance of the 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.
Project name: Arlee Acres
BMP drainage area number: 2
Print name: Jane H. Holland
Address: 7225 Rouse Road, Holly Springs, NC 27540
- 3-5.2 -
Signature:
Date: ;Z l / to /v 9
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, V\ *t N + a Notary Public for the State of
County of do hereby certify that
personally appeared before me this ��DF�'
a 00R , and acknowledge the due execution of the
forgoing wet detention basin maintenance requirements. Witness my hand and official
seal,
SEAL
My commission expires
Form SW401-Wet Detention Basin O&M-Rev.4 Page 4 of 4

Permit Number:
(lobe prodded by DWO
Drainage Area Number:
Wet Detention Basin Operation and Maintenance Agreement
I will keep a maintenance record on this BMP. This maintenance record will be kept in a
log in a known set location. Any deficient BMP elements noted in the inspection will be
corrected, repaired or replaced immediately. These deficiencies can affect the integrity
of structures, safety of the public, and the removal efficiency of the BMP.
The wet detention basin system is defined as the wet detention basin,
pretreatment including forebays and the vegetated filter if one is provided.
This system (check one):
❑ does ® does not incorporate a vegetated filter at the outlet.
This system (check one):
® does ❑ does not incorporate pretreatment other than a forebay.
Important maintenance procedures:
— Immediately after the wet detention basin is established, the plants on the
vegetated shelf and perimeter of the basin should be watered twice weekly if
needed, until the plants become established (commonly six weeks).
— No portion of the wet detention pond should be fertilized after the first initial
fertilization that is required to establish the plants on the vegetated shelf.
— Stable groundcover should be maintained in the drainage area to reduce the
sediment load to the wet detention basin.
— If the basin must be drained for an emergency or to perform maintenance, the
flushing of sediment through the emergency drain should be minimized to the
maximum extent practical.
— Once a year, a dam safety expert should inspect the embankment.
n.v
After the wet detention pond is established, it should be inspected once a month and
within 24 hours after every storm event greater than 1.0 inches (or 1.5 inches if in a
Coastal County). Records of operation and maintenance should be kept in a known set
location and must be available upon request.
Inspection activities shall be performed as follows. Any problems that are found shall
be repaired immediately.
BMP element:
Potentialproblem:
How I will remediate the problem:
The entire BMP
Trash/debris is present.
Remove the trash/debris.
The perimeter of the wet
Areas of bare soil and/or
Regrade the soil if necessary to
detention basin
erosive gullies have formed.
remove the gully, and then plant a
ground cover and water until it is
established. Provide lime and a
one-time fertilizer application.
Vegetation is too short or too
Maintain vegetation at a height of
long.
approximately six inches.
Form SW401-Wet Detention Basin O&M-Rev.4
Page 1 of 4

----utm
V�O*

Permit Number:
(to be provided by DWQ)
Drainage Area Number:
BMP element:
Potentialproblem:
How I will remediate theproblem:
The inlet device: pipe or
The pipe is clogged.
Unclog the pipe. Dispose of the
swale
sediment off -site.
The pipe is cracked or
Replace the pipe.
otherwise damaged.
Erosion is occurring in the
Regrade the swale if necessary to
swale.
smooth it over and provide erosion
control devices such as reinforced
turf matting or riprap to avoid
future problems with erosion.
The forebay
Sediment has accumulated to
Search for the source of the
a depth greater than the
sediment and remedy the problem if
original design depth for
possible. Remove the sediment and
sediment storage.
dispose of it in a location where it
will not cause impacts to streams or
the BMP.
Erosion has occurred.
Provide additional erosion
protection such as reinforced turf
matting or riprap if needed to
prevent future erosion problems.
Weeds are present.
Remove the weeds, preferably by
hand. If pesticide is used, wipe it on
the plants rather than spraying.
The vegetated shelf
Best professional practices
Prune according to best professional
show that pruning is needed
practices
to maintain optimal plant
health.
Plants are dead, diseased or
Determine the source of the
dying.
problem: soils, hydrology, disease,
etc. Remedy the problem and
replace plants. Provide a one-time
fertilizer application to establish the
ground cover if a soil test indicates
it is necessary.
Weeds are present.
Remove the weeds, preferably by
hand. If pesticide is used, wipe it on
the plants rather than spraying.
The main treatment area
Sediment has accumulated to
Search for the source of the
a depth greater than the
sediment and remedy the problem if
original design sediment
possible. Remove the sediment and
storage depth.
dispose of it in a location where it
will not cause impacts to streams or
the BMP.
Algal growth covers over
Consult a professional to remove
50% of the area.
and control the algal growth.
Cattails, phragmites or other
Remove the plants by wiping them
invasive plants cover 50% of
with pesticide (do not spray).
the basin surface.
Form SW401-Wet Detention Basin O&M-Rev.4
Page 2 of 4

Permit Number:
(to be provided by DWQ)
Drainage Area Number:
BMP element:
Potentialproblem:
How I will remediate theproblem:
The embankment
Shrubs have started to grow
Remove shrubs immediately.
on the embankment.
Evidence of muskrat or
Use traps to remove muskrats and
beaver activity is present.
consult a professional to remove
beavers.
A tree has started to grow on
Consult a dam safety specialist to
the embankment.
remove the tree.
An annual inspection by an
Make all needed repairs.
appropriate professional
shows that the embankment
needs repair. if applicable)
The outlet device
Clogging has occurred.
Clean out the outlet device. Dispose
of the sediment off -site.
The outlet device is damaged
Repair or replace the outlet device.
The receiving water
Erosion or other signs of
Contact the local NC Division of
damage have occurred at the
Water Quality Regional Office, or
outlet.
the 401 Oversight Unit at 919-733-
1786.
The measuring device used to determine the sediment elevation shall be such
that it will give an accurate depth reading and not readily penetrate into
accumulated sediments.
When the permanent pool depth reads
sediment shall be removed.
When the permanent pool depth reads
shall be removed.
feet in the main pond, the
feet in the forebay, the sediment
BASIN DIAGRAM
ill in the blanks)
17 Permanent Pool Elevation 425.00
Sediment RemovalZ420.50 Pe manen Pool---------- Volume Sediment Removal Elevation 4=L1950
Volume
Bottom Elevaft Min. -----------------------------------
- -- - --
Sediment Bottom Elevation I-ft n
Storage Sedimer
Storage
FOREBAY MAIN POND
Form SW401-Wet Detention Basin O&M-Rev.4 Page 3 of 4

Permit Number:
(to be provided by DWQ)
I acknowledge and agree by my signature below that I am responsible for the
performance of the 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.
Project name:
BMP drainage area number: 3
Print name: Jane H. Holland
Address: 7225 Rouse Road, Holly Springs, NC 27540
Phone: q19-- 75 5.2 - 6/
Signature:QQ�
Date:
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.
I, \ \z,, M � � Z9 s� , aI ,Notary Public for the State of
G�kwa , County of do hereby certify that
personally appeared before me this\ lD,'
a�, and acknowledge the due execution of the
forgoing wet detention basin maintenance requirements. Witness my hand and official
seal,
SEAL
My commission expires J
Form SW401-Wet Detention Basin O&M-Rev.4
Page 4 of 4

Permit Number:
(to be provided by DWQ)
Drainage Area Number: 1
Bioretention Operation and Maintenance Agreement
I will keep a maintenance record on this BMW. This maintenance record will be kept in a
log in a known set location. Any deficient BMP elements noted in the inspection will be
corrected, repaired or replaced immediately. These deficiencies can affect the integrity
of structures, safety of the public, and the removal efficiency of the BMW.
Important operation and maintenance procedures:
— Immediately after the bioretention cell is established, the plants will be watered
twice weekly if needed until the plants become established (commonly six
weeks).
— Snow, mulch or any other material will NEVER be piled on the surface of the
bioretention cell.
— Heavy equipment will NEVER be driven over the bioretention cell.
— Special care will be taken to prevent sediment from entering the bioretention cell.
— Once a year, a soil test of the soil media will be conducted.
After the bioretention cell is established, I will inspect it once a month and within 24
hours after every storm event greater than 1.0 inches (or 1.5 inches if in a Coastal
County). Records of operation and maintenance will be kept in a known set location
and will be available upon request.
Inspection activities shall be performed as follows. Any problems that are found shall
be repaired immediately.
BMP element:
The entire BMP
Potential roblems:
How I will remediate the problem:
The The perimeter of the
Trash/debris is resent.
Areas of bare soil and/or
Remove the 'debris.
Regrade the soil if necessary to
bioretention cell
erosive gullies have formed.
remove the gully, and then plant a
ground cover and water until it is
established. Provide time and a
The inlet device: pipe,
The pipe is clogged (if
one-time fertilizer application.
Unclog the pipe. Dispose of the
stone verge or swale
a licable .
sediment off -site.
The pipe is cracked or
Replace the pipe.
otherwise damaged (if
a licable .
Erosion is occurring in the
Regrade the swale if necessary to
swale (if applicable).
smooth it over and provide erosion
control devices such as reinforced
turf matting or riprap to avoid
future problems with erosion.
Stone verge is clogged or
Remove sediment and clogged
covered in sediment (if
stone and replace with clean stone.
a licable .
Form SW401-Bioretention O&M-Rev.3

BMP element: Potential roblems:
The pretreatment area Flow is bypassing
pretreatment area and/or
Ilies have formed.
Sediment has accumulated to
a depth greater than three
inches.
How l will remediate the -problem:
Regrade if necessary to route all
flow to the pretreatment area.
Restabilize the area after grading,
Search for the source of the
sediment and remedy the problem if
possible. Remove the sediment and
Erosion has occurred.
restabilize the pretreatment area.
Provide additional erosion
protection such as reinforced turf
matting or riprap if needed to
Weeds are present.
prevent future erosion problems.
Remove the weeds, preferably by
hand.
The bioretention cell:
vegetation
Best professional practices
show that pruning is needed
to maintain optimal plant
Prune according to best professional
practices.
health.
Plants are dead, diseased or
dying.
Determine the source of the
problem: soils, hydrology, disease,
etc. Remedy the problem and
replace plants. Provide a one-time
fertilizer application to establish the
ground cover if a soil test indicates
The bioretention cell:
soils and mulch
it is necessary.
Tree stakes/wires are present
six months after lantin .
Mulch is breaking down or
has floated away.
Remove tree stake/wires (which
can kill the tree if not removed .
Spot mulch if there are only random
void areas. Replace whole mulch
Iif necessary. Remove the
remaining much and replace with
triple shredded hard wood mulch at
a maximum depth of three inches.
Soils and/or mulch are
clogged with sediment.
Determine the extent of the clogging
- remove and replace either just the
top layers or the entire media as
needed. Dispose of the spoil in an
appropriate off -site location. Use
triple shredded hard wood mulch at
a maximum depth of three inches.
Search for the source of the
sediment and remedy the problem if
ossible.
An annual soil test shows that
pH has dropped or heavy
metals have accumulated in
the soil media.
Dolomitic lime shall be applied as
recommended per the soil test and
toxic soils shall be removed,
disposed of properly and replaced
with new lantin media.
Form SW401-Bioretention O&M-Rev.3
n__-n _cn

BMP element:
The underdrain system
if a licable
Potentialproblems:
Clogging has occurred.
How I will remediate the roblem:
Wash out the underdrain system,
The drop inlet
Clogging has occurred.
Clean out the drop inlet. Dispose of
the sediment off -site.
The receiving water
The dropinlet is damaged
Erosion or other signs of
Repair or re lace the dro inlet.
Contact the NC Division of Water
damage have occurred at the
outlet.
Quality 401 Oversight Unit at 919-
733-1786.
Form SW401-Bioretention O&M-Rev.3 0 - 4 -C A

Permit Number:
(to be provided by DWQ)
I acknowledge and agree by my signature below that I am responsible for the
performance of the 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.
Project name:
BMP drainage area number:
Print name: Jane Holland
Address: 7225 Rouse Road, Holly Spines NC 27540
Date:_ a Ziah)q
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.
a Notary Public for the State of
J U \\ Qu aysrKn , County of �� do hereby certify that
tr� ih
�- ��`�� personally appeared before me this ��
day of �O�q and acknowledge the due execution of the
forgoing bioretention maintenance requirements. Witness my hand and official seal,
SEAL
My commission expires �u — r 0 \ r�-
Form S W401-Bioretention I&M-Rev. 2 Page 4 of 4

Permit Number:
(to be provided by DWQ)
Drainage Area Number: 2
Wet Detention Basin Operation and Maintenance Agreement
I will keep a maintenance record on this BMP. This maintenance record will be kept in a
log in a known set location. Any deficient BMP elements noted in the inspection will be
corrected, repaired or replaced immediately. These deficiencies can affect the integrity
Of structures, safety of the public, and the removal efficiency of the BMP.
The wet detention basin system is defined as the wet detention basin,
pretreatment including forebays and the vegetated filter if one is provided.
This system (check one):
❑ does ® does not incorporate a vegetated filter at the outlet.
This system (check one):
® does 0 does not incorporate pretreatment other than a forebay.
Important maintenance procedures:
- Immediately after the wet detention basin is established, the plants on the
vegetated shelf and perimeter of the basin should be watered twice weekly if
needed, until the plants become established (commonly six weeks).
- No portion of the wet detention pond should be fertilized after the first initial
fertilization that is required to establish the plants on the vegetated shelf.
- Stable groundcover should be maintained in the drainage area to reduce the
sediment load to the wet detention basin.
- If the basin must be drained for an emergency or to perform maintenance, the
flushing of sediment through the emergency drain should be minimized to the
maximum extent practical.
- Once a year, a dam safety expert should inspect the embankment.
After the wet detention pond is established, it should be inspected once a month and
within 24 hours after every storm event greater than 1.0 inches (or 1.5 inches if in a
Coastal County). Records of operation and maintenance should be kept in a known set
location and must be available upon request.
Inspection activities shall be performed as follows. Any problems that are found shall
be repaired immediately.
The entire BMP Trash/debris is present.
The perimeter of the wet I Areas of bare soil and/or
detention basin erosive gullies have formed.
is too short or too
the
Remove the trash/debris.
Regrade the soil if necessary to
remove the gully, and then plant a
ground cover and water until it is
established. Provide lime and a
one-time fertilizer application
Mamtam vegetation at a height of
approximately six inches.
Form SW401-Wet Detention Basin O&M-Rev-4

Permit Number:
(to be provided by DWQ)
Drainage Area Number:
BMP element. Potential roblem:
The inlet device: pipe or The pipe is clogged.
P P gg
How I will the roblem:
Unclog
Swale
the pipe. pe. Dispose of the
s
sediment off -site.
The pipe is cracked or
Replace the pipe.
otherwise dams ed.
Erosion is occurring in the
Regrade the swale if necessary to
swale.
smooth it over and provide erosion
control devices such as reinforced
turf matting or riprap to avoid
The foreba Y
Sfuture roblems with erosion.
Sediment has accumulated to Search for the source of the
a depth greater than the
sediment and remedy the problem if
original design depth for
possible. Remove the sediment and
sediment storage.
dispose of it in a location where it
will not cause impacts to streams or
the BMP.
Erosion has occurred.
Provide additional erosion
protection such as reinforced turf
matting or riprap if needed to
Weeds are present.
revent future erosion problems.
Remove the weeds, preferably by
hand. If pesticide is used, wipe it on
shelf
Best professional practices
the lants rather than spraying.
Prune according to best professional
show that pruning is needed
practices
FThevegetated
to maintain optimal plant
health.
Plants are dead, diseased or
Determine the source of the
dying.
problem: soils, hydrology, disease,
etc. Remedy the problem and
replace plants. Provide a one-time
fertilizer application to establish the
ground cover if a soil test indicates
Weeds are present.
it is necessa
Remove the weeds, preferably by
hand. If pesticide is used, wipe it on
The main treatment area
Sediment has accumulated to
the lams rather than s ra in .
Search for the source of the
a depth greater than the
sediment and remedy the problem if
original design sediment
possible. Remove the sediment and
storage depth.
dispose of it in a location where it
will not cause impacts to streams or
the BMP.
covers over
Consult a professional to remove
a.
and control the al al rowthgmites
or other
Ng
Remove the plants by wiping themts
cover 50% of
with pesticide (do not spray).
ace.
Form SW401-Wet Detention Basin O&M-Rev.4

Permit N
(to be provided by DWQ)
Drainage Area Number:
The measuring device used to determine the sediment elevation shall be such
that it will give an accurate depth reading and not readily penetrate into
accumulated sediments.
When the permanent pool depth reads feet in the main pond, the
sediment shall be removed.
When the permanent pool depth reads feet in the forebay, the sediment
shall be removed.
BASIN DIAGRAM
Till in Me blanks)
V Permanent Pool Elevation 421.00
Sediment Removal . 418.50 Pe anen Pool
---------------- Volume Sediment Removal Elevation 418.50
Bottom Elevatio 417.50 ft Min. -------------------------- Volume
Sediment Bottom Elevation 417.50
ft
Storage
Sedimet
FOREBAY MAIN POND Storage
Form SW401-Wet Detention Basin O&M-Rev.4

J
Permit Number:
(to be provided by DWQ)
I acknowledge and agree by my signature below that I am responsible for the
performance of the 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.
Project name: Arlee Acres
BMP drainage area number: 2
Print
Title:
Signature:
Date:_ ;z f / !a /n 9
Note: The legally responsible parry 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.
County of
a Notary Public for the State of
do hereby certify that
T ^� personally appeared before me thisl6�h
ay of a Opp ,and acknowledge the due execution of the
forgoing wet detention basin maintenance requirements. Witness my hand and official
seal,
SEAL
My commission exniresf�) — (Q 1� -`. Oara'
Form SW40I-Wet Detention Basin O&M-Rev-4

Permit Number:
(to he provided by DWQ)
Drainage Area Number:i
Wet Detention Basin Operation and Maintenance Agreement
I will keep a maintenance record on this BMP. This maintenance record will be kept in a
log in a known set location. Any deficient BMP elements noted in the inspection will be
corrected, repaired or replaced immediately. These deficiencies can affect the integrity
of structures, safety of the public, and the removal efficiency of the BMP.
The wet detention basin system is defined as the wet detention basin,
pretreatment including forebays and the vegetated filter if one is provided.
This system (check one):
❑ does ® does not incorporate a vegetated filter at the outlet.
This system (check one):
® does ❑ does not incorporate pretreatment other than a forebay.
Important maintenance procedures:
— Immediately after the wet detention basin is established, the plants on the
vegetated shelf and perimeter of the basin should be watered twice weekly if
needed, until the plants become established (commonly six weeks).
— No portion of the wet detention pond should be fertilized after the first initial
fertilization that is required to establish the plants on the vegetated shelf.
— Stable groundcover should be maintained in the drainage area to reduce the
sediment load to the wet detention basin.
— If the basin must be drained for an emergency or to perform maintenance, the
flushing of sediment through the emergency drain should be minimized to the
maximum extent practical.
— Once a year, a dam safety expert should inspect the embankment.
After the wet detention pond is established, it should be inspected once a month and
within 24 hours after every storm event greater than 1.0 inches (or 1.5 inches if in a
Coastal County). Records of operation and maintenance should be kept in a known set
location and must be available upon request.
Inspection activities shall be performed as follows. Any problems that are found shall
be repaired immediately.
BMP element:
Potentialproblem:
Now I will remediate theproblem:
The entire BMP
Trash/debris is present.
Remove the trash/debris.
The perimeter of the wet
Areas of bare soil and/or
Regrade the soil if necessary to
detention basin
erosive gullies have formed.
remove the gully, and then plant a
ground cover and water until it is
established. Provide lime and a
one-time fertilizer application.

Permit Number:
(to be provided by DWQ)
Drainage Area Number:
BMP element:
Potentialproblem:
How I will remediate theproblem:
The inlet device: pipe or
The pipe is clogged.
Unclog the pipe. Dispose of the
swale
sediment off -site.
The pipe is cracked or
Replace the pipe.
otherwise damaged.
Erosion is occurring in the
Regrade the swale if necessary to
swale.
smooth it over and provide erosion
control devices such as reinforced
turf matting or riprap to avoid
future problems with erosion.
The forebay
Sediment has accumulated to
Search for the source of the
a depth greater than the
sediment and remedy the problem if
original design depth for
possible. Remove the sediment and
sediment storage.
dispose of it in a location where it
will not cause impacts to streams or
the BMP.
Erosion has occurred.
Provide additional erosion
protection such as reinforced turf
matting or riprap if needed to
prevent future erosion problems.
Weeds are present.
Remove the weeds, preferably by
hand. If pesticide is used, wipe it on
the plants rather than spraying.
The vegetated shelf
Best professional practices
Prune according to best professional
show that pruning is needed
practices
to maintain optimal plant
health.
Plants are dead, diseased or
Determine the source of the
dying.
problem: soils, hydrology, disease,
etc. Remedy the problem and
replace plants. Provide a one-time
fertilizer application to establish the
ground cover if a soil test indicates
it is necessary.
Weeds are present.
Remove the weeds, preferably by
hand. If pesticide is used, wipe it on
the plants rather than spraying.
The main treatment area
Sediment has accumulated to
Search for the source of the
a depth greater than the
sediment and remedy the problem if
original design sediment
possible. Remove the sediment and
storage depth.
dispose of it in a location where it
will not cause impacts to streams or
the BMP.
Algal growth covers over
Consult a professional to remove
50% of the area.
and control the algal growth.
Cattails, phragmites or other
Remove the plants by wiping them
invasive plants cover 50% of
with pesticide (do not spray).

Permit Number:
(to be provided by DWQ)
Drainage Area Number:
BMP element:
Potentialproblem:
How I will remediate theproblem:
The embankment
Shrubs have started to grow
Remove shrubs immediately.
on the embankment.
Evidence of muskrat or
Use traps to remove muskrats and
beaver activity is present.
consult a professional to remove
beavers.
A tree has started to grow on
Consult a dam safety specialist to
the embankment.
remove the tree.
An annual inspection by an
Make all needed repairs.
appropriate professional
shows that the embankment
needs re air. if applicable)
The outlet device
Clogging has occurred.
Clean out the outlet device. Dispose
of the sediment off -site.
The outlet device is damaged
Repair or replace the outlet device.
The receiving water
Erosion or other signs of
Contact the local NC Division of
damage have occurred at the
Water Quality Regional Office, or
outlet.
the 401 Oversight Unit at 919-733-
1786.
The measuring device used to determine the sediment elevation shall be such
that it will give an accurate depth reading and not readily penetrate into
accumulated sediments.
When the permanent pool depth reads feet in the main pond, the
sediment shall be removed.
When the permanent pool depth reads feet in the forebay, the sediment
shall be removed.
BASIN DIAGRAM
(fill in the blanks)
Sediment Removal
Bottom
Permanent Pool Elevation 425.00
420.50 Pe anen Pool
------------------ Volume Sediment Removal Elevation 420.50 Volume
419.50 -ft Min.
------ - ------ ------------------------------- ------
Sediment Bottom Elevation 419.50 2 1-ft r
Storage Sedimet
Storage
FOREBAY MAIN POND

Permit Number:
(to be provided by DWQ)
I acknowledge and agree by my signature below that I am responsible for the
performance of the 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.
Project name:
BMP drainage area number:
Print name: Jane H. Holland
Address: 7225 Rouse Road, Holly Springs, NC 27540
Signature:
Date: o2i/6/o9
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.
a Notary Pubic for the State of
County of VJU� , do hereby certify that
personally appeared before me this\ lo4'
Ud , and acknowledge the due execution of the
forgoing wet detention basin maintenance requirements. Witness my hand and official
seal,
SEAL
0
My commission expires :t�