SW7070607_CURRENT PERMIT_20070723

i
' I
STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SW 7U7/l(�IJ 7
i
DOC TYPE
CURRENT PERMIT
❑ APPROVED PLANS
❑ HISTORICAL FILE
I
❑ COMPLIANCE EVALUATION INSPECTION
I
DOC DATE
i
Az70 Za
YYYYMMDD

North Carolina
ev �
July 23, 2007
Mr. William G. Allen, Managing Member
RR Development North III, LLC
3129 Springbank Lane
Charlotte, NC 28226
Subject: Stormwater Permit No
Cutter Bay
High Density Project
Pamlico County
Dear Mr. Allen:
The Washington Regional Office received a complete Stormwater Man
for Cutter Bay on July 23, 2007. Staff review of the plans and specific<
the project, as proposed, will comply with the Stormwater Regulations
2H.1000. We are forwarding Permit No. SW7070607 dated July 23, 2(
the subject project.
Michael F. Easley, Governor
William G. Ross Jr., Secretary
of Environment and Natural Resources
Colcen 11, Sullins, Director
Division of Water Quality
SW7070607
:ment Permit Application
ns has determined that
forth in Title 15A NCAC
. for the construction of
This permit shall be effective from the date of issuance until July 23, 20117, and shall be subject to
the conditions and limitations as specified therein. Please pay special attention to the Operation
and Maintenance requirements in this permit and per the submitted application supplement forms.
Failure to establish an adequate system for operation and maintenance of the stormwater
management systems will result in future compliance problems. i
If any parts, requirements, or limitations contained in this permit are ul
right to request an adjudicatory hearing upon written request within thi
receipt of this permit. This request must be in the form of a written pe
150B of the North Carolina General Statutes, and filed with the Office
P.O. Drawer 27447, Raleigh, NC 27611-7447. Unless such demands
be final and binding.
If you have any questions, or need additional information concerning
Scott Vinson, or me at [phone].
cer ly,
Al Ho g�
Regional Supervisor
Surface Water Protection
AH/sav: C:\STORMWATER\PERMIT\SW7070607
cc: James M. Mozingo, PE
Pamlico County Building Inspections
CAMA — Doug Huggett
Washington Regional Office
Central Files
iacceptable, you have the
rtyi(30) days following
Rion, conforming to Chapter
of Administrative Hearings,
are made this permit shall
please contact
N""or�ehCarolina
wakrralljl
North Carolina Division of Water Quality Washington Regional Office Phone [phone] FAX [phone]
Internet wuw.ncwmcrnualitv.org 943 Washington Square Mull, Washington, NC 27889
An Equal OppodunitylAffrmafive Action Employer — 50% Recycled110% Post Consumer Paper
Customer Service
1-877-623-6748

State Stormwater Management Systems
. STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RI SOURCES
DIVISION OF WATER QUALITY
HIGH DENSITY DEVELOPMENT
In accordance with the provisions of Article 21 of Chapter 143, General Statutes of North
Carolina as amended, and other applicable Laws, Rules, and Regulations
PERMISSION IS HEREBY GRANTED TO
RR Development North lll, LLC
Cutter Bay
Pamlico County
FOR THE
construction, operation and maintenance of a wet detention basin and curb outlet swales 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 July 23, 2017, and shall be
subject to the following specified conditions and limitations:
I. DESIGN STANDARDS
This permit is effective only with respect to the nature and voldme of stormwater
described in the application and other supporting data. The overall tract built -upon
area percentage for the project must be maintained at 30%, per the requirements of
Section .1005 of the stormwater rules. The project is permitted for 891 lots, each
limited to a maximum of (see attached BUA Per Lot Table) square feet of built -
upon area, as defined by the stormwater rules, and as indicated in the approved
pans.
2. This stormwater system has been approved for the management of stormwater
runoff as described in Section 1.8 on page 3 of this permit and per approved plans
and specifications. The overall stormwater controls have been designed to handle
the runoff from 121.49 acres of impervious area within a project area of 438 acres.
3. The project proposes the use of a wet detention basin to treat the high density
portion of the project and multiple curb outlet swales to treat the low density portions
of the project. Each designated curb outlet swale shown on the approved plans
must be maintained at a minimum of 100' Ion maintain maintain 5:1 (HIV) side slopes or
flatter, have a longitudinal slope no steeper than 5%, carry thelflow from a 10 year
storm in a non -erosive manner, maintain a dense vegetated cover, and be located
in either a dedicated common area or a recorded drainage easement.
Page 2 of 9

State Stormwater Management Systems
Permit No. SW7070607
4. No piping shall be allowed except those minimum amounts necessary to direct
runoff beneath an impervious surface such as a road or under driveways to provide
access to lots and the piping that is shown on the approved plans directing
stormwater to the wet detention basin.
5. Runoff conveyances other than the curb outlet system swales, such as perimeter
ditches, must be vegetated with side slopes no steeper than 3:1 (H:V).
6. 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.
7. The runoff from all built -upon area within the permitted drainage areas of this project
must be directed into the permitted stormwater control system designed for each
drainage area.
8. The following design criteria have been provided in the wet detention ponds and
must be maintained at design condition:
Drainage Area: To Wet Pond
a. Drainage Area, acres: 179.07
b. Total Impervious Surfaces, acres: 62.92
C. Design Storm, inches: 1
d. Pond Depth, feet: 6.00 (average)
e. TSS removal efficiency: 90%
f. Permanent Pool Elevation, FMSL: 5.00
g. Permanent Pool Surface Area, ft2: 2,255,941 (51.79ac.)
h. Permanent Storage Volume, ft3: 13,801,585
i. Temporary Storage Elevation, FMSL: 5.11
j. Temporary Storage Volume, ft3: 266,510
k. Controlling Weir Length, ft.: 6.00
I. Receiving Stream/River Basin: Trent Creek, Bay River
Swindell Bay &
Alligator Creek
M. Stream Index Number: 27 — 150 — 6
n. Classification of Water Body: "SC; Sw, NSW"
II. SCHEDULE OF COMPLIANCE
1. The stormwater management systems shall be constructed in its entirety, vegetated
and operational for its intended use prior to the construction of any built -upon
surface, per the approved plans.
Page 3 of 9

State Stormwater
Systems
2. During construction, erosion shall be kept to a minimum and
the systems will be repaired immediately.
3. The permittee shall at all times provide the operation and m;
assure the permitted stormwater system functions at optimu
approved Operation and Maintenance Plan must be follower
maintenance must occur at the scheduled intervals includin(
a. Semiannual scheduled inspections (every 6 months).
b. Sediment removal.
C. Mowin.9 and revegetation of slopes and the vegetate(
d. Immediate repair of eroded areas.
e. Maintenance of all slopes in accordance with approv(
specifications.
f. Debris removal and unclogging of outlet structure, on
spreader, catch basins and piping.
q. Access to the outlet structure must be available at all
any eroded areas of
intenance necessary to
i efficiency. The
in its entirety and
but not limited to:
filter.
plans and
device, flow
4. Records of maintenance activities must be kept and made available upon request to
authorized personnel of DWQ. The records will indicate the date, activity, name of
person performing the work and what actions were taken.
5. The facilities shall be constructed as shown on the approved plans. This permit
shall become voidable unless the facilities are constructed in accordance with the
conditions of this permit, the approved plans and specifications, and other
supporting data.
6. Upon completion of construction, prior to issuance of a Cert
and prior to operation of this permitted facility, a certificatie
from an appropriate designer for the system installed c,
permitted facility has been installed in accordance with
approved plans and specifications, and other supporting do
deviations from the approved plans and specifications must
Certification. A modification may be required for those devia
7. If the stormwater system was used as an Erosion Control di
restored to design condition prior to operation as a stormwa
and prior to occupancy of the facility.
8. Access to the stormwater facilities shall be maintained via a
all times.
9. The permittee shall submit to the Director and shall have rece
revised, plans, specifications, and calculations prior to constru
modification to the approved plans, including, but not limited t
a. Any revision to any item shown on the approved plans
stormwater management measures, built -upon area, d
b. Project name change.
C. Transfer of ownership.
d. Redesign or addition to the approved amount of built-u
drainage area.
e. Further subdivision, acquisition, lease or sale of all or I
The project area is defined as all property owned by th
Sedimentation and Erosion Control Plan approval or a
was sought.
f. Filling in, altering, or piping of any vegetative conveyai
approved plan.
:ate of Occupancy,
must be received
:ifying that the
its permit, the
mentation. Any
s noted on the
:e, it must be
treatment device,
ropriate easements at
ved approval for
:tion, for any
i, those listed below:
including the
Bails, etc.
area or to the
of the project area.
�rmittee, for which
VIA Major permit
shown on the
Page 4 of 9

State Stormwater Management Systems
Permit No. SW7070607
10. The permittee shall submit to the Division final site layout and grading plans for any
permitted future/common areas shown on the approved plans and receive approval
prior to construction.
11. A copy of the approved plans and specifications shall be maintained on file by the
Permi I ftee for the life of the project.
12. The Director may notify the permittee when the permitted site does not meet one or
more bf the minimum requirements of the permit. Within the time frame specified in
the notice, the permittee shall submit a written time schedule to the Director for
modifying the site to meet minimum requirements. The permittee shall provide
copies of revised plans and certification in writing to the Director that the changes
have been made.
13. This permit shall be effective from the date of issuance until July 23, 2017.
Application for permit renewal shall be submitted 180 days prior to the expiration
date of this permit and must be accompanied by the processing fee.
14. Eachllot in the subdivision covered by this permit will maintain a minimum 50 foot
wide vegetative buffer between all impervious areas and surface waters. All roof
drains must terminate at least 50' from the Mean High Water mark.
15. Deedrestrictions are incorporated into this permit by reference and must be
recorded with the Office of the Register of Deeds prior to the sale of any lot.
16.
C.
91
e.
U
h.
led deed restrictions must include, at a minimum, the following statements
to stormwater management:
The following covenants are intended to ensure ongoing compliance with
State Stormwater Management Permit Number SW7070607, as issued by
the Division of Water Quality under NCAC 2H.1000. .
The State of North Carolina is made a beneficiary of these covenants to the
extent necessary to maintain compliance with the Stormwater Management
Permit.
These covenants are to run with the land and be binding on all persons and
parties claiming under them.
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.
Alteration of the drainage as shown on the approved plans may not take
place without the concurrence of the Division of Water Quality.
The maximum built -upon area per lot is (see BUA Per Lot table) square feet.
These allotted amounts include 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,
driveways, and parking areas, but does not include raised, open wood
decking, or the water surface of swimming pools.
Filling in, piping or altering any 3:1 vegetated conveyances (ditches, swales,
etc.) associated with the development except for average driveway
crossings, is prohibited by any persons.
Filling in, piping or altering any designated 5:1 curb outlet swale or vegetated
area associated with the development is prohibited by any persons.
A 50' vegetated buffer must be maintained between all built -upon area and
the Mean High Water line of surface waters. All roof drains shall terminate at
least 50' from the Mean High Water mark.
Each designated curb outlet swale shown on the approved plan must be
maintained at a minimum of 100' long, maintain 5:1 (H:V) side slopes or
flatter, have a longitudinal slope no steeper than 5%, carry the flow from a 10
year storm in a non -erosive manner, maintain a dense vegetated cover, and
Page 5 of 9

State Stormwater Management Systems
be located in either a dedicated common area or a recorded drainage
easement. I
17. The permittee must submit a copy of the recorded deed (restrictions within 30
days of the date of recording.
18. A wetlands monitoring, operation and maintenance plan must be submitted and
approved by the Division prior to the construction of any outlet on the wet detention
basin. The monitoring, operation and maintenance plan must be followed at all
times to help determine any impacts to existing wetlands.
III. GENERAL CONDITIONS
This permit is not transferable except after notice to and approval by the Director. In
the event of a change of ownership, or a name change, the permittee must submit a
formal permit transfer request to the Division of Water Quality, accompanied by a
completed name/ownership change form, documentation from the parties involved,
and other supporting materials as may be appropriate. The approval of this request
will be considered on its merits and may or may not be approved. The permittee is
responsible for compliance with all permit conditions until such time as the Division
approves the transfer request.
Failure,to abide by the conditions and limitations contained inithis permit may
subject the Permittee to enforcement action by the Division of Water Quality, in
accordance with North Carolina General Statute 143-215.6A to 143-215.6C.
3. The issuance of this permit does not preclude the Permittee f,om complying with
any and all statutes, rules, regulations, or ordinances, which may be imposed by
other government agencies (local, state, and federal) having jurisdiction.
4. In the event that the facilities fail to perform satisfactorily, including the creation of
nuisance conditions, the Permittee shall take immediate corrective action, including
those as may be required by this Division, such as the construction of additional or
replacement stormwater management systems.
5. The issuance of this permit does not prohibit the Director from reopening and
modifying the permit, revoking and reissuing the permit, or terminating the permit as
allowed by the laws, rules, and regulations contained in Title 15A of the North
Carolina Administrative Code, Subchapter 21-1.1000; and NortH Carolina General
Statute 143-215.1 et. al.
6. The permittee grants DENR Staff permission to enter the property during normal
business hours for the purpose of inspecting all components of the permitted
stormwater management facility.
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.
Unless specified elsewhere, permanent seeding requirements for the stormwater
control must follow the guidelines established in the North Carolina Erosion and
Sediment Control Planning and Design Manual.
Approved plans and specifications for this project are incorporated by reference and
are enforceable parts of the permit.
Page 6 of 9

State Stormwater Management Systems
Permit No. SW7070607
10. The permittee shall notify the Division of any name, ownership or mailing
address changes within 30 days.
Permit issued this the 23rd day of July, 2007.
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
for
vvlcclI I I. VUIII I IJ, ✓IIGVIVI
Division of Water Quality
By Authority of the Environmental Management Commission
Stormwater Permit No. SW7070607
Page 7 of 9

State Stormwater Management Systems
Cutter Bay
Stormwater Permit No. SW7070607
Pamlico County
Designer's Certification
I, , as a duly registered I in
the State of North Carolina, having been authorized to observe (periodically/ weekly/ full
time) the construction of the project, I
(Project)
for (Project Owner) hereby state that, to the
best of my abilities, due care and diligence was used in the observation of the project
construction such that the construction was observed to be built within substantial
compliance and intent of the approved plans and specifications.
The checklist of items on page 2 of this form is included in the
Noted deviations from approved plans and specification:
Signature
Registration Number
Date
Page 8 of 9

State Stormwater Management Systems
Permit No. SW7070607
Certification Requirements:
1. The drainage area to the system contains approximately the permitted
acreage.
2. The drainage area to the system contains no more than the permitted
amount of built -upon area.
3. All the built -upon area associated with the project is graded such that the
runoff drains to the system.
4. 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.
8. All slopes are grassed with permanent vegetation.
9. Vegetated slopes are no steeper than 3:1.
10. The inlets are located per the approved plans and do not cause short-
circuiting of the system.
11. The permitted amounts of surface area and/or volume have been provided.
12. 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, and
a forebay.
15. The required system dimensions are provided per the approved plans.
cc: NCDENR-DWQ Washington Regional Office
Pamlico County Building Inspections
Page 9 of 9

11 OFFICE USE ONLY
Date Received I Fee Paid I Permit Number
J w�c 9),1007 6WAcK i-tllq l 7
State of North Carolina Department of Environment and
h Natural Resources Division of Water Quality
alij ��'''11 ��
AP 7 STORMWATER MANAGEMENT PERMIT APPLICATu�UPIDYhDvE I�AIVE D
This fonu may be photocopied for use as an original
)if4t' ti0 JUN 0 8 2007 Q-+/
[. GENERAL INFORMATION DWQ
PROJ #
1. Applicants name (specify the name of the corporation, individual, etc. who owns the prolec
RR Development North 111, LLC
2. Print Owner/Signing Official's name and title (person legally responsible for facility and compliance):
William G. Allen M-twk5,A1 Mu,ha4-
3. Mailing Address for person listed in item 2 above:
City: Charlotte State: N.C. Zip: 28226
"Telephone Number: _ [phone]
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: Stonewall County:
6. Directions to Project (from nearest major intersection):
Site is located along the north side of NC Route 55 (Road Street) approximately 1 5 miles
cast south east from the intersection of NC Route 304 and NC Route 55 in Eayboro NC
7. Latitude: 35 08' 01" N Longitude: 076 44' 34" W of project.
8. Contact person who can answer questions about the project:
Name: Tames M. Mozingo, PE Telephone Number: [phone] \
II. PERMIT INFORMATION:
1. Specify whether project is (check one): X New Renewal Modification
Form SWU-101 Version 3.99 Pagel of4

plillil 0 � () el () i k.

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):
X Low Density X High Density _Redevelop General Permit _ Other
4. Additional Project Requirements (check applicable blanks):
X CAMA Major X Sedimentation/Erosion Control _404/401 Permit _NPDESStormwater
Information on required state permits can be obtained by contacting the Customer Service Center at
1-877-623-6748.
III. PROJECT INFORMATION
1. In the space provided below, summarize how stormwater will be treated. Also attach a detailed
narrative (one to two pages) describing stormwater management for the project.
The outer perimeter of the proiect will drain throueh (grass -lined open channel) swales to level soreaders
then to the riparian buffer. All remaining (inner perimeter) stormwater runoff will be captured with in a
drainage piping system,per the NCDNER Stormwater BMPs.
2. Stormwater runoff from this project drains to the Neuse River basin.
3. Total Project Area: 563 acres 4. Project Built Upon Area: 9
5. How many drainage areas does the project have?
6. Complete the following information for each drainage area. If there are more than two drainage areas
in the project, attach an additional sheet with the information for each area provided in the same format
as below. 6 J
Basin Information
Drainage Area 1
Drainage Area 2
Receiving Stream Name
Bay River, Trent Creek, Swindell Bay &
N�A \ Clelk
Alligator Creek - Neuse River Basin
Receiving Stream Class
SC, SW, NSW
/A
Drainage Area
438.31 acres
"127.26 I -7 ^7
Existing Impervious* Area
0
0
Proposed Impervious *Area
"101.90 Ac
62.3
Impervious *Are (total)
W
23-2% Z 7. -7 44
49.4 % W
Impervious * Surface Area
On -site Lots 1.l
Drainage Area 1
76,13-5942 Ac
Drainage Area 2
33.35
On -site Streets & Parking
26.05 Ac
17,20
On -site Parking
(included in on -site street
calcs.)
(included in on -site street
calcs.
On -site Sidewalks
4.95 Ac
2.99
Other on -site (curbing & other
minus sidewalks
13..5(, -H36Ac
9.38
Off -site
N/A
N/A
.
Total: 40+-'9e- 1 L(. � �j 4
'Cotal: 62.92
,
Form SWU-101 Version 3.99 Page 2 of 4

* Impervious area is defined as the built upon area including, but not limited to, buildings, roads, parking
areas, sidewalks, gravel areas, etc.
7. How was the off -site impervious area listed above derived? AutoCAD area calculations
IV. DEED RESTRICTIONS AND PROTECTIVE COVENANTS
The following italicized deed restrictions and protective covenants are required to be recorded for all
subdivisions, outparcels and future development prior to the sale of any lot. If lot sizes vary
significantly, a table listing each lot number, size and the allowable built -upon area for each lot must be
provided as an attachment.
1. The fallowing covenants are intended to ensure ongoing compliance with state stor neater management permit
number as issued by the Division of Water Quality. These covenants
may not be changed or deleted without the consent of the State.
2. No more than square feet of any lot shall be covered by structures or impervious materials.
Impervious materials include asphalt, gravel, concrete, brick, stone, slate or similar naterial but do not include
mood decking or the water surface of swimming pools.
3. Swales shall not be filled in, piped, or altered except as necessanj to provide driveway crossings.
4. Built -upon area in excess of the permitted amount requires a state storrmoater management permit nwdifncation
prior to construction.
5. All permitted runoff fronn outparcels or future development shall be directed into the permitted storrnwnter
control system. These connections to the storrnwnter control systent shall be performed in a manner that maintains
the integrity and performance of the system as permitted.
By your signature below, you certify that the recorded deed restrictions and protective covenants for
this project shall include all the applicable items required above, that the covenants will be binding on
all parties and persons claiming under them, that they will run with the land, that the required
covenants cannot be changed or deleted without concurrence from the State, and that they will be
recorded prior to the sale of any lot.
V. SUPPLEMENT FORMS
The applicable state stormwater management permit supplement form(s) listed below must be submitted
for each BMP specified for this project. Contact the Stormwater and General Permits Unit at (919) 733-
5083 for the status and availability of these forms.
Form SWU-102 Wet Detention Basin Supplement Form SWU-103 Infiltration Basin Supplement Form
SWU-104 Low Density Supplement Form SWU-105 Curb Outlet System Supplement Form SWU-106 Off -
Site System Supplement Form SWU-107 Underground Infiltration Trench Supplement Form SWU-108
Neuse River Basin Supplement Form SWU-109Innovative Best Management Practice Supplement
FORM SWU-102 Wet Detention Supplement
FORM SWU-103 Infiltration Basin Supplement
FORM SWU-104 Low Density Supplement
FORM SWU-105 Curb Outlet System Supplement
FORM SWU-106 Off Site System Supplement
FORM SWU-107 Underground Infiltration Trench Supplement
FORM SWU-108 Neuse River Basin Supplement
FORM SWU-109 Innovative Best Management Practice Supplement
Form SWU-101 Version 3.99 Page 3 of 4

VI. SUBMIT717AL REQUIREMENTS
Only complete application packages will be accepted and reviewed by the Division of Water Quality
(DWQ). A complete package includes all of the items listed below. The complete application
package should be submitted to the appropriate DWQ Regional Office.
1. Please indicate that you have provided the following required information by initialing in the space
provided next to each item.
tials
• Original and one copy of the Stormwater Management Permit Application Form
• One copy of the applicable Supplement Form(s) for each BMP M
• Permit application processing fee of $420 (payable to NCDENR)
• Detailed narrative description of storm water treatment/management
❑. • Two copies of plats and specifications, including: >tit
lZ Development/Project name
G/�Engineer and firm
Y Legend
[i✓North arrow
1J/- Scale
V� Revision number & date
VY Mean high water line
1.�- Dimensioned property/project boundary
Vd Location map with named streets or NCSR numbers
IV- Original contours, proposed contours, spot elevations, finished floor elevations
R<Details of roads, drainage features, collection systems, and stormwater control measures
W/ Wetlands delineated, or a note on plans that none exist
E/.- Existing drainage (including off -site), drainage easements, pipe sizes, runoff calculations
D4 Drainage areas delineated
F// Vegetated buffers (where required)
VII. AGENT AUTHORIZATION
If you wish to designate authority to another individual or firm so that they may provide information
on your behalf, please complete this section.
Designated agent (individual or firm): RR Development North III, LLC
Mailing Address: 3129 Springbank Lane
City: Charlotte State: N. C. Zip: 28226
Phone: [phone] Fax: [phone]
VIII. APPLICANT'S CERTIFICATION
I, William G. Allen 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 projectcomplieswith
(the
�requirements of 15A NCAC 2H .1000.
+ Signature: J.A �lw_ a �d (Li�M` Date: `/ 7
-O--7
FormSWU-101 Version3.99
Page 4 of 4
M1C

a 3JD �j Permit No. SW / 0%�(cC�y/��
!%
>,>._'�� " •�-'; � i (to be provided by DWQ)
State of North Carolina
1p U L2OO7 O7 Department of Environment and Natural Resource
@ Division of Water Quality �.. CEIVED
44 �t4s di @ TORMWATER MANAGEMENT PERMIT APPLICATION FORM
.0
WET DETENTION BASIN SUPPLEMENT JUN "81J07
This form may be photocopied for use as an original PRO J # DWQ
DWQ Stormwater Management Plan Review:
A complete stormwater management plan submittal includes an application form, a wet detention basin
supplement for each basin, design calculations, and plans and specifications showing all basin and outlet
structure details.
1. PROJECT INFORMATION
Project Name:
Contact Person: James Mozineo, P.E. Phone Number: ( 757 ) 431-1002
For projects with multiple basins, specify which basin this worksheet applies to: 2
elevations
Basin Bottom Elevation -4 ft. (floor of the basin)
Permanent Pool Elevation 5.00 ft. (elevation of the orifice)
Temporary Pool Elevation 5.11 ft. (elevation of the discharge structure overflow)
areas
Permanent Pool Surface Area 2,255,941 sq. ft. (water surface area at the orifice elevation)
Drainage Area 179.07 ac. (on -site and off -site drainage to the basin)
Impervious Area 62.92 ac. (on -site and off -site drainage to the basin)
volumes
Permanent Pool Volume
Temporary Pool Volume
Forebay Volume
Other parameters
SA/DA 1
Weir Length
Design Rainfall
Design TSS Removal 2
13,801,585 cu. ft. (combined volume of main basin and forebay)
266,510 cu. ft. (volume detained above the permanent pool)
N/A cu. ft. (approximately 20% of total volume)
0.021 (surface area to drainage area ratio from DWQ table)
6.0 ft. (2 to 5 day temporary pool draw -down required)
I in.
90 % (minimum 85% required)
,r
Form SWU-102 Rev 3.99 Page 1 of 4

r
d

Footnotes:
When using the Division SA/DA tables, the correct SA/DA ratio for permanent pool sizing should be computed based upon the
actual impervious % and permanent pool depth. Linear interpolation should be employed to determine the correct value for non-
standard table entries.
2 In the 20 coastal counties, the requirement for a vegetative filter may be waived if the wet detention basin is designed to provide
90%TSS removal. The NCDENR BMP manual provides design tables for both 85%TSS removal and 90%TSS removal.
IL REQUIRED ITEMS CHECKLIST
The following checklist outlines design requirements per the Stormwater Best Management Practices Manual
(N.C. Department of Environment, Health and Natural Resources, February 1999) and Administrative Code
Section: 15 A NCAC 2H .1008.
Initial in the space provided to indicate the following design requirements have been met and supporting
documentation is attached. If the applicant has designated an agent in the Stormwater Management Permit
Application Form, the agent may initial below. If a requirement has not been met, attach justification.
Applicants Initials
RA a. The permanent pool depth is between 3 and 6 feet (required minimum of 3 feet).
b. The forebay volume is approximately equal to 20% of the basin volume.
41 c. The temporary pool controls runoff from the design storm event.
d. The temporary pool draws down in 2 to 5 days.
r A e. If required, a 30-foot vegetative filter is provided at the outlet (include non -erosive flow
calculations)
lJt//tq^II"At1 f The basin length to width ratio is greater than 3:1.
T g. The basin side slopes above the permanent pool are no steeper than 3:1.
TNIA It. A submerged and vegetated perimeter shelf with a slope of 6:1 or less (show detail).
64 i. Vegetative cover above the permanent pool elevation is specified.
--N/A� j. A trash rack or similar device is provided for both the overflow and orifice.
404 k. A recorded drainage easement is provided for each basin including access to nearest right-
of -way.
[1�•, I. if the basin is used for sediment and erosion control during construction, clean out of the
basin is specified prior to use as a wet detention basin.
N_�/A in. A mechanism is specified which will drain the basin for maintenance or an emergency.
HL WET DETENTION BASIN OPERATION AND MAINTENANCE AGREEMENT
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) 0 does 04
es not
This system (check one) 0 does ff does not
incorporate a vegetated filter at the outlet.
incorporate pretreatment other than a forebay.
Form SWU-102 Rev 3.99 Page 2 of 4

Maintenance activities shall be performed as follows:
After every significant runoff producing rainfall event and at least monthly:
a. Inspect the wet detention basin system for sediment accumulation, erosion, trash accumulation,
vegetated cover, and general condition.
b. Check and clear the orifice of any obstructions such that drawdown of the temporary pool occurs within
2 to 5 days as designed.
2. Repair eroded areas immediately, re -seed as necessary to maintain good vegetative cover, mow vegetative
cover to maintain a maximum height of six inches, and remove trash as needed.
Inspect and repair the collection system (i.e. catch basins, piping, swales, riprap, etc.) quarterly to maintain
proper functioning.
4. Remove accumulated sediment from the wet detention basin system semi-annually or when depth is
reduced to 75% of the original design depth (see diagram below). Removed sediment shall be disposed of
in an appropriate manner and shall be handled in a manner that will not adversely impact water quality (i.e.
stockpiling near a wet detention basin or stream, etc.).
The measuring device used to determine the sediment elevation shall be such that it will give an accurate
depth reading and not readily penetrate intoQ accumulated sediments.
sttofF 3.0
When the permanent pool depth reads tj"""ej feet in the main pond, the sediment shall be removed.
When the permanent pool depth reads N /A feet in the forebay, the sediment shall be removed.
BASIN DIAGRAM
(fill in the hlanke)
0 Permanent Pool Elevation JV
Sediment Ren oval El. N/A 75 o Smd • Re�""`� �`Ic� 1� ��
CSI eIF)
-------------- -- Sediment RemovalIcvatwn—(-7� 75%
------------------%tea----------- -
Bottom Etc anon N/A % ---
Bottom Ele at' n 1 .� 25%
t;ka" fo —` op
FOREBAY MAIN POND
5. Remove cattails and other indigenous wetland plants when they cover 50% of the basin surface. These
plants shall be encouraged to grow along the vegetated shelf and forebay berm.
6. If the basin must be drained for an emergency or to perform maintenance, the flushing of sediment through
the emergency drain shall be minimized to the maximum extent practical.
Form SWU-102 Rev 3.99 Page 3 of 4

7. All components of the wet detention basin system shall be maintained in good working order.
I acknowledge and agree by my signature below that I am responsible for the performance of the seven
maintenance procedures listed above. I agree to notify DWQ of any problems with the system or prior to any
changes to the system or responsible party.
Print name: William G. Allen
Title: Managing Member
Address: 3129 Snringbank Lane, Charlotte, NC 28226
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, 1 -^r'el J • ' k / 6 , a Notary Public for the State oof+
County of C do hereby certify that (A�l �� 1 Ctw- t—s41.en personally appeared before me this �4ay of / t a, and acknowledge the due
execution of the forgoing wet detention basin maintenance requirements. Witness my hand and official seal,
+�"Y^von KARENJ.MYERS
Commission DD 633019
B�a�dpilT.TMrY�nhryw2un1200130*1
N]N:\R,
My commission expires
Form SWU-102 Rev 3.99 Page 4 of 4
2

w� ' S

Permit No.
(to be provided by DWQ)
d State of North Carolina
partment of Environment and Natural Resources
Division of Water Quality ��,jj
�00TORMWATER MANAGEMENT PERMIT APPLICATIO CE I • E D
# RB OUTLET SYSTEM SUPPLEMENT JUN 0 B 2007
FOR LOW DENSITY DEVELOPMENT WITH CURB AND GUTTER DWQ
This form maybe photocopied for use as an original pROJ #
DWO Stonnwater Management Plan Review:
A complete stormwater management plan submittal includes a stormwater management permit application, a
curb outlet system supplement, a low density supplement, design calculations, and plans and specifications
showing all stormwater conveyances and curb outlet details.
I. PROJECT INFORMATION
Project Name : Cutter Ba
Contact Person: James Mozingo, P.E. Phone Number: [phone]
Curb outlets to (check one): A'/Swale 0 Vegetated Area
II. REQUIRED ITEMS CHECKLIST
The following checklist outlines design requirements per the North Carolina Administrative Code Section 15A
NCAC 2H .1008.
Initial in the space provided to indicate that the following design requirements have been met and supporting
documentation is attached. If the applicant has designated an agent on the Stormwater Management Permit
Application Form, the agent may initial below. If a requirement has not been met, attach justification.
Applic nts Initials
4 .'-` _ a. Curb outlets direct flow to a Swale or vegetated area.
T b. Swales or vegetated areas receiving curb outlet flow are designed to carry, at a minimum,
the peak flow from the 10-year storm.
c. Flow velocity is non -erosive for peak flow from the 10-year storm event.
d. Longitudinal slope of the Swale or vegetated area does not exceed 5%.
e. Side slopes of the Swale or vegetated area are no steeper than 5:1 (horizontal to vertical).
f. Length of Swale or vegetated area is > 100 feet.
g. The system takes into account the run-off at ultimate built -out potential from all surfaces
d" _ h.
4dk
4)�AI.
draining to the system (delineate drainage area for each Swale).
Swales are located in recorded drainage easements.
Grass type(s) for permanent vegetative cover specified on detail.
Swale detail provided on plans.
Form SWU-105 Ver 3.99 Page I of 3

III. DESIGN INFORMATION
Complete the following table. If additional space is needed the information should be provided in the same
format as Table 1 and attached to this form. Rainfall intensity data can be found in Appendix 8.03 of the State
of North Carolina Erosion and Sediment Control Planning and Design Manual. [See Attached Spreadsheet]
Table 1. Swale Design Information
Swale No.
Drainage
Area ac
Impervious
Area ac
Grassed
Area (ac)
C
Q
(cfs
V.11.
s
V,.,
(fps)
Flow
Depth ft
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
Form SWU-105 Ver 3.99 Page 2 of 3

III. CURB OUTLET SYSTEM MAINTENANCE, REQUIREMENTS
1. Mowing will be accomplished as needed according to the season. Grass height will not exceed six inches
at any time.
2. Swales will be inspected monthly or after every runoff producing rainfall event for sediment build-up,
erosion, and trash accumulation.
3. Accumulated sediment and trash will be removed as necessary. Swales will be reseeded or sodded
following sediment removal.
4. Eroded areas of the swales will be repaired and reseeded. Swales will be revegctated as needed and in a
timely manner based on the monthly inspections.
5. Catch basins, curb cuts, velocity reduction devices, and piping will be inspected monthly or after every
significant runoff producing rainfall event. Trash and debris will be cleared away from grates, curb cuts,
velocity reduction devices and piping.
6. Swales will not be altered, piped, or filled in without approval from NCDENR Division of Water Quality.
I acknowledge and agree by my signature below that I am responsible for the performance of the six
maintenance procedures listed above. I agree to notify DWQ of any problems with the system or prior to any
changes to the system or responsible party.
Print Name and Title: William G. Allen., Mgo-a j,k. AAtAA%,—
Date: —q— --1 7-61% t
-} S
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, Kn J •) allo P blicfortheStaeof Plon
Y County ofPIC —�/
do hereby certify that I (` r ( �G*'t 9 • erg personally appeared before me this 1711,
/1,
day of %mil t�� and acknowledge the due execution of the forgoing infiltration basin maintenance
requirements. Witness my hand and official seal,
D
ERCommission DD25, 201Expires January 25, 2011Famildr TM FM kw a["W?gl9
SEAL My commission expires
Form SWU-105 Ver 3.99 Page 3 of 3
Q

77't f.,Uai'�fa�CA1 j�,,)p.;iuilic

OUTLET SWALE CAPACITY COMPUTATION SHEET
PROJECT: CUTTER BAY
LOCATION: PALMLICO COUNTY, NORTH CAROLINA
DESIGNED BY: JWJ/CFS
CHECKED BY: JMM
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6.32
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0.0239
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1.23
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0.4
1.57
4.5
3
5.34
4.84
4.00
131
0.0064
0.4
6.3
0.77
1.93
5
0
0.049
1.0
0.6
1.07
4.5
4
5.33
4.83
2.00
137
0.0207
0.4
6.3
0.73
1.85
5
0
0,049
1.0
0.47
1.65
4.5
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5.35
4.85
2.00
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0.36
1.41
4.5
6
5.81
5.31
2.00
154
0.0215
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0.34
0.86
5
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0.049
1.0
0.35
1.38
4.5
7
5.81
5.31
3.13
125
0.0174
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6.3
0.39
0.97
5
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0,049
1.0
0.38
1.31
4.5
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5.36
2.34
2.00
113
0.0030
0.4
6.3
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1.0
0.98
1.02
4.5
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5.43
4.93
2.60
106
0.0220
0.4
6.3
1.72
4.34
5
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1.0
0,55
2.09
4.5
10
6.94
6.44
6.00
123
0.0036
0.4
6.3
0.86
2.17
5
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1.0
0.82
0.64
4.5
11
5.33
4.83
3.07
102
0,0173
0.4
6.3
0.72
1.82
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0.49
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12
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5.94
6.06
5.06
259
0.0030
0.4
6.3
1.83
4.62
5
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0.049
1.0
0.96
1.00
4.5
13
7.33
6.83
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172
0.0281
0.4
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0.66
1.67
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0.049
1.0
0.43
1.80
4.5
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6.91
6.41
4.00
104
0.0232
0.4
6.3
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2.52
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0.049
1.0
0.52
1.86
4.5
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6.61
6.11
2.98
129
0.0243
0.4
6.3
1.40
3.52
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1.0
0.59
2.06
4.5
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6.91
6.41
3.87
157
0.0162
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2.56
5
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1.0
0.56
1.63
4.5
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7.36
6.86
5.45
143
0.0099
0.4
6.3
0.57
1.43
5
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1.0
0,49
1.17
4.5
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7.09
6.59
4.92
175
0.0095
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1.29
3.24
5
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1.0
0,69
1.36
4.5
19
N/A
6.24
4.81
469
0.0030
0.4
6.3
3.00
7.56
5
4
0.049
1.0
0.83
1.11
4.5
20
7.53
7.03
5.50
153
0.0100
0.4
6.3
0.63
1.58
5
0
0.049
1.0
0.63
0.81
4.5
21
5.20
4.70
3.85
103
0.0083
0.4
6.3
1.17
2.96
5
0
0.049
1.0
0.67
1.32
4.5
22
4.25
3.75
2.71
152
0.0068
0.4
6.3
1.27
3.20
5
0
0.049
1.0
0.72
1.25
4.5
23
5.14
4.09
3.78
103
0.0030
0A
6.3
0.98
2.47
5
0
0.049
1.0
0.76
0,86
4.5
24
4.22
3.72
1.75
144
0.0137
0.4
6.3
1.02
2.56
5
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1.0
0.58
1.53
4.5
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5.98
5.48
4.60
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0.5
1.09
4.5
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6.06
5.56
3.81
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0.4
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0.53
1.62
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4.66
4.08
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1.28
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4.6
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4.01
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1.44
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5.75
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2.74
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0.56
1.74
4.5
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4.27
3.77
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6.17
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0.82
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4.5
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4.5
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2007-4-17 Outlet Swale Calcs.xls PAGE 1 OF 2 4/18/2007

OUTLET SWALE CAPACITY COMPUTATION SHEET
PROJECT: CUTTER BAY
LOCATION: PALMLICO COUNTY, NORTH CAROLINA
DESIGNED BY: JWJ/CFS
CHECKED BY: JMM
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8.04
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0.73
1.85
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0.59
1.07
4.5
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8.47
8.04
144
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0.4
6.3
0.67
1.69
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0.049
1.0
0.66
0.78
4.5
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8,04
142
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4.5
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0.4
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0.64
1.61
5
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0.59
0.91
4.5
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6.40
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148
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0.4
6.3
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10.30
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0.88
2,44
4.5
44
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9.72
6.65
615
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0.4
6.3
2.47
6.22
5
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0.049
1.0
0.93
1.27
4.5
45
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9.71
8.04
416
0.0040
0.4
6.3
4.66
11.73
5
0
0,049
1.5
1.29
1,41
4.5
46
N/A
8.71
8.25
95
0.0048
0.4
6.3
0.89
2.24
5
0
0.049
1.0
0.67
1.00
4.5
47
N/A
8.71
6.19
293
0,0086
0.4
6.3
1.18
2.97
5
0
0.049
1.0
0.67
1.33
4.5
48
N/A
9.27
2.27
987
0.0071
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6.3
4.83
12.16
5
0
0.049
1.5
1.17
1.77
4.5
49
N/A
11.53
8.00
555
0.0064
0.4
6.3
1.32
3.32
5
0
0.049
1.0
0.74
1.23
4.5
50
N/A
8.14
7 000
379
0.0030
0A
6.3
1.74
4.39
5
0
0.049
1.0
0.94
0.99
4.5
51
6.58
6.08
5.76
103
0.0031
0.4
6.3
1.02
2.58
5
0
0.049
1.0
0.77
0.88
4.5
OUTLET
N/A
3.46
3.00
113
0.0041
N/A
N/A
N/A
16.04
3
10
0,049
1.0
0.84
1.52
4.5
NOTE: ASSUMED RETARDANCE FACTOR D FOR CUT TALL FESUCUE, BAHIAGRASS AND/OR KENTUCKY BLUEGRASS.
ANALYZED DITCH FLOWING FULL CONDITION AND HALF FULL CONDITION. DETERMINED AVERAGE MANNINGS N COEFFICIENT OF 0.049 FROM FIGURE 8.05C.
DEPTH CALCULATED AND VELOCITY CALCULATED FROM HAAESTED METHODS FLOW MASTER SOFTWARE.
Not' %)) or +AC SGIA?je-5 abav- OWC_ CCYA',jcrcj lc...
4PAY-1 7/13/467
W&Z) 4 i'i u y .0 �' 1 1 " t
�. se-
2007-4-17 Outlet Swale CalO .xls PAGE 2 OF 2 4/18/2007

LEVEL SPREADER SYSTEM OPERATION AND MAINTENANCE AGREEMENT (1/2007)
A level spreader system includes: a forebay, diverter box, level spreader, riparian buffer/vegetated filter strip,
and flow bypass channel.
Name of Project:
Address: Town of Stonewall, Pamlico County, NC
Maintenance activities shall be performed as follows: DwQ
PROJ #
MAINTENANCE ACTIVITY
FREQUENCY
Post -construction monitoring —inspect for vegetation,
Check after every heavy rainfall for first 6 months
settling, erosion, or concentrated flow.
following construction.
Inspect Diverter Box and clean and/or make repairs.
Once a month and after heavy rainfalls/storms.
Look for:
• Clogged inlet or outlet pipes.
• Trash/debris in the box.
Inspect Forebay + Level Spreader. Clean and/or
Once a month and after heavy rainfalls/storms.
make repairs. Look for:
• Sediment in forebay and along level spreader
lip;
• Trash and/or leaf buildup.
• Scour, undercutting of level spreader.
• Settlement of level spreader. structure (no
longer level; you see silt downhill below level
spreader).
• Fallen trees on level spreader.
• #57 stone washing downhill.
Inspect the Riparian Buffer and the Bypass Swale
Once a month and after heavy rainfalls/storms.
and make repairs as needed'. Look for:
• Damaged turf reinforcement or riprap rolling
downhill.
• Erosion within the buffer or swale.
• Concentrated flows downhill of level
spreader —look for gullies or sediment flows.
Mow grass to a 6" height.
As needed during growing season.
Remove any weeds/shrubs growing on level spreader
Once a year.
or in swale.
APR 1 9 2007
r I,V O-aNARO
' NOTE: Contact NC Division of Water Quality, 401/Wetlands Unit at 919-733-1786 BEFORE any work
in Protected Riparian Buffers.
Pagel of 2

0
t
(Sce- cM0.a e )
LEVEL
SPREADER NO.
LOCATION ON SITE (DESCRIBE)
HOW WILL IT BE ACCESSED?
1
DEDICATED EASEMENT
2
DEDICATED EASEMENT
3
DEDICATED EASEMENT
4
DEDICATED EASEMENT
5
DEDICATED EASEMENT
6
DEDICATED EASEMENT
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.
Print name: William G. Allen
Title: Managing Member
Address: 3129 Soringbank Lane
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, � -�` e`en — . MI,i y`S , a Notary Public for the State of
County of �� K , do hereby certify that 0 t % � 1 Q M
personally appeared before me this "day of 2q4rij a�, and acknowledge the due
execution of the forgoing wet (wetland] detention basin maintenance requirements. Witness my hand and
official sea],
=OUAy P" KAREN J. MYERS ..... <.• >,
Commission DD 6=19
a Expires January 25;.2011'
��OF F��P BaItlBEllxu Troy Fgnlnvwxgp BOD3B5101B
SEAL
My commission expires
Page 2 of 2

r

PREFORMED SCOUR HOLES
PROJECT: CUTTER BAY
LOCATION: PALMLICO COUNTY, NORTH CAROLINA
DESIGNED BY: JWJ/CFS
CHECKED BY: JMM
OF
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0.51
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0.4
6.3
21224
0.49
1.23
15
3.75
1.00
3
0.4
6.3
33417
0.77
1.93
15
3.75
1.00
4
0.4
6.3
31900
0.73
1.85
15
3.75
1.00
5
0.4
6.3
15480
0.36
0.90
15
3.75
1.00
6
0.4
6.3
14922
0.34
0.86
15
3.75
1.00
7
0.4
6.3
16837
0.39
1 0.97
15
1 3.75
1.00
8
0.4
6.3
84722
1.94
4.90
15
3.75
1.00
9
0.4
6.3
74959
1.72
4.34
15
3.75
1.00
10
0.4
6.3
37530
0.86
2.17
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3.75
1.00
11
0.4
6.3
31458
0.72
1.82
15
3.75
1.00
12
0.4
6.3
79841
1.83
4.62
15
3.75
1.00
13
0.4
6.3
28865
0.66
1.67
15
3.75
1.00
14
0.4
6.3
43616
1.00
2.52
15
3.75
1.00
15
0.4
6.3
60826
1.40
1 3.52
15
3.75
1.00
16
0.4
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44299
1.02
2.56
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3.75
1.00
17
0.4
6.3
24751
0.57
1.43
15
3.75
1.00
19
0.4
6.3
130665
3.00
7.56
18
4.50
1.00
21
0.4
6.3
51175
1.17
2.96
15
3.75
1.00
22
0.4
6.3
55251
1.27
3.20
15
3.75
1.00
23
0.4
6.3
42639
0.98
2.47
15
3.75
1.00
24
0.4
6.3
44265
1.02
2.56
15
3.75
1.00
25
0.4
6.3
23185
0.53
1.34
15
3.75
1.00
26
0.4
6.3
38820
0.89
2.25
15
1 3.75
1.00
27
0.4
6.3
22177
0.51
1.28
15
3.75
1.00
28
0.4
6.3
25394
0.58
1.47
15
3.75
1.00
29
0.4
6.3
47345
1.09
2.74
15
3.75
1.00
30
0.4
6.3
106655
2.45
6.17
18
4.50
1.00
31
0.4
6.3
45639
1.05
2.64
15
3.75
1.00
32
0.4
6.3
100231
2.30
5.80
15
3.75
1.00
2007-4-17_Outlet Swale Calcs.xls PAGE 1 OF 2 4/18/2007

PREFORMED SCOUR HOLES
PROJECT: CUTTER BAY
LOCATION: PALMLICO COUNTY, NORTH CAROLINA
DESIGNED BY: JWJ/CFS
CHECKED BY: JMM
O
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0.84
2.12
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1.00
34
0.4
6.3
54947
1.26
3.18
15
3.75
1.00
35
0.4
6.3
45156
1.04
2.61
15
3.75
1.00
36
0.4
6.3
112386
2.58
6.50
18
4.50
1.00
37
0.4
6.3
65355
1.50
3.78
15
3.75
1.00
38
0.4
6.3
30162
0.69
1.74
15
3.75
1.00
39
0.4
6.3
55089
1.26
3.19
15
3.75
1.00
40
0.4
6.3
53134
1.22
1 3.07
15
1 3.75
1.00
41
0.4
6.3
57298
1.32
3.31
15
3.75
1.00
43
0.4
6.3
178076
4.09
10.30
18
4.50
3.00
44
0.4
6.3
107554
2.47
6.22
18
4.50
4.00
47
0.4
6.3
51259
1.18
2.97
15
3.75
7.00
48
0.4
6.3
210220
4.83
12.16
18
4.50
8.00
2007-4-17 Outlet Swale Calcs.xls PAGE 2 OF 2 4/18/2007

LEVEL SPREADER SWALE DESIGN:
Q10 years = 16.04 cfs
Level Spreader Length = 13 ft x 16.04 cfs = 208.52 ft
1 cfs
Use 130' max length
3.75'
Level Spreader Up
3' Layer of
• Flow PaG�--� �#57 9tane
Channel
Underdrain - Sized I / Strip cf
For Site Sod ` filter Fabric
Conditions - Dram Appropriately Seed
Into Uypaea Swale Concrete rootar