SW8070407_HISTORICAL FILE_20070413

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SW8 010 `i 0-1
DOC TYPE
❑ CURRENT PERMIT
❑ APPROVED PLANS
HISTORICAL FILE
❑ COMPLIANCE EVALUATION INSPECTION
DOC DATE
20 0-1 O q 13
YYYYMMDD

Michael r Easley, Governor
William G Ross Jr Secretary
North Carolina Department of Environment and Natural Resources
Alan W Klimek P E Duector
Division at Water Quality
April 13, 2007
Ray E McCotter, Member Manager
RIMCO , LLC
PO Box 12623
New Bern, NC 28561
Subject Stormwater Permit No SW8 070407
The Palms Professional Center
High Density Project
Onslow County
Dear Mr McCotter
The Wilmington Regional Office received a complete Stormwater Management Permit
Application for The Palms Professional Center on April 9, 2007 Staff review of the plans and
specifications has determined that the protect, as proposed, will comply with the Stormwater
Regulations set forth in Title 15A NCAC 2H 1000 We are forwarding Permit No SW8 070407
dated April 13, 2007, for the construction of the subject protect
This permit shall be effective from the date of issuance until April 13, 2017, 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 adtudicatory hearing upon written request within sixty (60) 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 Chris Baker, or me at [phone]
Sint /�3�
Edward Beck
Regional Supervisor
Surface Water Protection Section
ENB/csb S \WQS\STORMWATER\PERMIT\070407 apr07
cc MJ Klinker, P E , Parker and Associates, Inc
Onslow County Building Inspections
Chris Baker
Wilmington Regional Office
Central Files
N'o P`hCarolma
Jvalzrm(/il
North Carolina Dnision of Watcr Quality 1617 Mat] Service Center Raleigh, NC 27699-1617 Phone [phone]
Internet ssww ncwatcrquaht} ore Location N 512 Salisbury St Raleigh NC 27604 hax [phone]
An Equal Opportunity/Affirmative Action Employer— 50% Recycled/10 % Post Consumer Paper
Customer Sen ice
1-877-623-6748

State Stormwater Management Systems
Permit No SW8 070407
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
STATE STORMWATER MANAGEMENT PERMIT
HIGH DENSITY DEVELOPMENT
In accordance with the provisions of Article 21 of Chapter 143, General Statutes of
North Carolina as amended, and other applicable Laws, Rules, and Regulations
PERMISSION IS HEREBY GRANTED TO
Ray McCotter and RMICO, LLC
The Palms Professional Center
912 N Manne Blvd, Onslow County
FOR THE
construction, operation and maintenance of a wet detention pond 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 April 13, 2017, and shall be
subject to the following specified conditions and limitations
I DESIGN STANDARDS
1 This permit is effective only with respect to the nature and volume of stormwater
described in the application and other supporting data
2 This stormwater system has been approved for the management of stormwater
runoff as described in Section 16 on page 3 of this permit The stormwater
control has been designed to handle the runoff from 73,980 square feet of
impervious area
3 The tract will be limited to the amount of built -upon area indicated on page 3 of
this permit, and per approved plans
4 All stormwater collection and treatment systems must be located in either
dedicated common areas or recorded easements The final plats for the project
will be recorded showing all such required easements, in accordance with the
approved plans
5 The runoff from all built -upon area within the permitted drainage area of this
project must be directed into the permitted stormwater control system
Page 2 of 7

State Stormwater Management Systems
Permit No SW8 070407
6 The following design criteria have been provided in the wet detention pond and
must be maintained at design condition
a Drainage Area, 9cres
Onsite, ft
Offsite, ft2
b Total Impervious Surfaces, ft2
c Design Storm, inches
d Pond Depth, feet
e TSS removal efficiency
f Permanent Pool Elevation, FMSL
g Permanent Pool Surface Area, ft2
h Permitted Storage Volume, ft3
Temporary Storage Elevation, FMSL
I Controlling Orifice
k Permitted Forebay Volume, ft3
1 Fountain Horsepower, HP
m Receiving Stream/River Basin
n Stream Index Number
o Classification of Water Body
11 SCHEDULE OF COMPLIANCE
28
121,792
None
73,980
1
45
85%
90
4,800
7,090
103
1 "0 pipe
1,555
1/8
Sandy Run Branch / White Oak
19-16-4
"SC,HQW,NSW"
1 The stormwater management system shall be constructed in its entirety,
vegetated and operational for its intended use prior to the construction of any
built -upon surface
2 During construction, erosion shall be kept to a minimum and any eroded areas of
the system will be repaired immediately
3 The permittee shall at all time provide the operation and maintenance necessary
to assure the permitted stormwater system functions at optimum efficiency The
approved Operation and Maintenance Plan must be followed in its entirety and
maintenance must occur at the scheduled intervals including, but not limited to
a Semiannual scheduled inspections (every 6 months)
b Sediment removal
c Mowing and re -vegetation of slopes and the vegetated filter
d Immediate repair of eroded areas
e Maintenance of all slopes in accordance with approved plans and
specifications
f Debris removal and unclogging of outlet structure, orifice device, flow
spreader, catch basins and piping
g Access to the outlet structure must be available at all times
Page 3 of 7

State Stormwater Management Systems
Permit No SW8 070407
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
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 the nozzle, pump and intake are connected by
tubing, 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 a fountain in this pond is 1/8 horsepower
6 The facilities shall be constructed as shown on the approved plans This permit
shall become void unless the facilities are constructed in accordance with the
conditions of this permit, the approved plans and specifications, and other
supporting data
7 Upon completion of construction, prior to issuance of a Certificate of Occupancy,
and prior to operation of this permitted facility, a certification must be received
from an appropriate designer for the system installed certifying that the permitted
facility has been installed in accordance with this permit, the approved plans and
specifications, and other supporting documentation Any deviations from the
approved plans and specifications must be noted on the Certification A
modification may be required for those deviations
8 If the stormwater system was used as an Erosion Control device, it must be
restored to design condition prior to operation as a stormwater treatment device,
and prior to occupancy of the facility
9 Access to the stormwater facilities shall be maintained via appropriate
easements at all times
10 The permittee shall submit to the Director and shall have received approval for
revised plans, specifications, and calculations prior to construction, for any
modification to the approved plans, including, but not limited to, those listed
below
a Any revision to any item shown on the approved plans, including the
stormwater management measures, built -upon area, details, etc
b Project name change
c Transfer of ownership
d Redesign or addition to the approved amount of built -upon area or to the
drainage area
e Further subdivision, acquisition, lease or sale of all or part of the project
area The project area is defined as all property owned by the permittee,
for which Sedimentation and Erosion Control Plan approval or a CAMA
Major permit was sought
f Filling in, altering, or piping of any vegetative conveyance shown on the
approved plan
11 The permittee shall submit final site layout and grading plans for any permitted
future areas shown on the approved plans, prior to construction
12 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
Page 4 of 7

State Stormwater Management Systems
Permit No SW8 070407
13 The Director may notify the permittee when the permitted site does not meet one
or more of the minimum requirements of the permit Within the time frame
specified in the notice, the permittee shall submit a written time schedule to the
Director for modifying the site to meet minimum requirements The permittee
shall provide copies of revised plans and certification in writing to the Director
that the changes have been made
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
2 Failure to abide by the conditions and limitations contained in this permit may
subject the Permittee to enforcement action by the Division of Water Quality, in
accordance with North Carolina General Statute 143-215 6A to 143-215 6C
3 The issuance of this permit does not preclude the Permittee from complying with
any and all statutes, rules, regulations, or ordinances, which may be imposed by
other government agencies (local, state, and federal) having jurisdiction
4 In the event that the facilities fad to perform satisfactorily, including the creation
of nuisance conditions, the Permittee shall take immediate corrective action,
including those as may be required by this Division, such as the construction of
additional or replacement stormwater management systems
5 The permittee grants DENR Staff permission to enter the property during normal
business hours for the purpose of inspecting all components of the permitted
stormwater management facility
6 The permit maybe modified, revoked and reissued or terminated for cause The
filing of a request for a permit modification, revocation and re -issuance or
termination does not stay any permit condition
7 Unless specified elsewhere, permanent seeding requirements for the stormwater
control must follow the guidelines established in the North Carolina Erosion and
Sediment Control Planning and Design Manual
8 Approved plans and specifications for this project are incorporated by reference
and are enforceable parts of the permit
9 The permittee shall notify the Division any name, ownership or mailing address
changes within 30 days
Permit issued this the 13th day of April, 2007
NORTIJ,C ROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
of Water Quality
Page 5 of 7

State Stormwater Management Systems
Permit No SW8 070407
By Authority of the Environmental Management Commission
The Palms Professional Center
Stormwater Permit No SW8 070407
Onslow County
Designer's Certification
I, , as a duly registered
in the State of North Carolina, having been authorized to observe (periodically/ weekly/
full time) the construction of the protect,
(Project)
for (Project Owner) hereby state that, to the
best of my abilities, due care and diligence was used in the observation of the project
construction such that the construction was observed to be built within substantial
compliance and intent of the approved plans and specifications
The checklist of items on page 2 of this form is included in the Certification
Noted deviations from approved plans and specification
Signature
Registration Number
Date
SEAL
Page 6 of 7

State Stormwater Management Systems
Permit No SW8 070407
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 drams 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 Regional Office
Onslow County Building Inspections
Page 7 of 7

0
Date Received Fee Paid Permit Number
11 /10 /b7 000 X3W%/ I SWe&0-70407
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
This form may he photocopied for use as an original
I GENERAL INFORMATION
1 Applicants name (specify the name of the corporation, individual, etc who owns the project)
RMICO , LLC
2 Print Owner/Signing Official's name and title (person legally responsible for facility and compliance)
Ray E McCotter, Managing Member
3 Mailing Address for person listed in item 2 above
PO Box 12623
City New Bern State NC Zip 28561
Telephone Number ( 252 ) 671-2442
4 Project Name (subdivision, facility, or establishment name - should be consistent with project name on plans
specifications letters, operation and maintenance agreements, etc)
The Palms Professional Center
5 Location of Project (street address)
912 N Marine Blvd
City Jacksonville, NC County ONSLOW
6 Directions to project (from nearest major intersection)
From intersection with NC 24 go 0 9 miles North East on US 17 to project on right
N 34°45'42" W 77024'48"
7 Latitude Longitude
8 Contact person who can answer questions about the project
Name MJ Klinker, P E Telephone Number
II PERMIT INFORMATION
1 Specify whether project is (check one)
X New
Form SWU-101 Version 3 99 Page 1 of
of project
910 1 455-241
Renewal Modification

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 X High Density Redevelop General Permit Other
4 Additional Project Reg.Kirements (check applicable blanks)
_CAMA Major _Sedimentation/Erosion Control 404/401 Perna[ NPDES Stormwater
Information on required state permits can be obtained by contacting the Customer Service Center at
1-877 623-6748
III PROJECT INFORMATION
1 In the space provided below, summarize how stormwater will be treated Also attach a detailed narrative
(one to two pages) describing stormwater management for the project
Wet detention basin
2 Stormwater runoff from this project drains to the
293
3 Total Project Area acres
White Oak
5 How many drainage areas does the project have? 1
4 Project Built Upon Area
Riv r-hasin
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
S!.'P=r- ,w'`�
lylr 1 'd9 iA b
Receiving Stream Name
Sandy Run Branch
Receiving Stream Class
SC NSW
Drainage Area
91 6
(Within project boundary)
Existing Impervious" Area
Proposed Impervious*Area
73 980
% Impervious` Area (total)
58
'lvr Y C S`
area�M�gs
�'SM
Y '�Vf -R
ai .gre"
On -site Buildings
22,000
On -site Streets
1,28
On -site Parking
,
On -site Sidewalks
Other on -site
Off -site
Total 73,980Total
Impervious area is defined as the built upon area including but not limited to, buildings roads parking areas
Sidewalks gravel areas, etc
Form SWU-101 Version 3 99 Page 2 of 4

How was the off -site impervious area listed above derived?
IV DEED RESTRICTIONS AND PROTECTIVE COVENANTS
The following italicized deed restrictions and protective covenants are required to be recorded for all
subdivisions outparcels and future development prior to the sale of any lot If lot sizes vary significantly a table
listing each lot number,size and the allowable built -upon area for each lot must be provided as an attachment
I The following covenants are intended to ensure ongoing compliance with state stormwater management permit number
as issued by the Division of Water Quality These covenants may not be
changed or deleted without the consent of the State
2 No more than NA square feet of any lot shall be covered by structures or impervious materials
Impervious materials include asphalt, gravel concrete, brick, stone, slate or similar material but do not include wood
decking or the water surface of swimming pools
3 Swales shall not be filled in piped or altered except as necessary to provide driveway crossings
4 Built -upon area in excess of the permitted amount requires a state stormwater management permit modification prior to
construction
5 All permitted runoff from outparcels or future development shall be directed into the permitted stormwater control
system These connections to the stormwater control system shall be performed in a manner that maintains the integrity
and performance of the system as permitted
By your signature below, you certify that the recorded deed restrictions and protective covenants for this project
shall include all the applicable items required above that the covenants will be binding on all parties and persons
claiming under them, that they will run with the land that the required covenants cannot be changed or deleted
without concurrence from the State, and that they will be recorded prior to the sale of any lot
V SUPPLEMENT FORMS
The applicable state stormwater management permit supplement form(s) listed below must be submitted for each
BMP specified for this project Contact the Stormwater and General Permits Unit at [phone] for the status
and availability of these forms
Form SWU-102
Wet Detention Basin Supplement
Form SWU-103
Infiltration Basin Supplement
Form SWU-104 ,
Low,Density Supplement
Form SWU-105
Curb Outlet System Supplement
Form SWU-106
Off -Site System Supplement
Form SWU-107
Underground Infiltration Trench Supplement
Form SWU-108
Neuse River Basin Supplement
Form SWU-109
Innovative Best Management Practice Supplement
Form SWU-101 Version 3 99 Page 3 of 4

VI SUBMITTAL REQUIREMENTS
Only complete application packages will be accepted and reviewed by the Division of Water Quality (DWQ)
A complete package includes all of the items listed below The complete application package should be
submitted to the appropriate DWQ Regional Office
Please indicate that you have provided the following required information by initialing in the space provided
next to each item
Original and one copy of the Stormwater Management Permit Application Form
One copy of the applicable Supplement Form(s) for each BMP
Permit application processing fee of $4M (payable to NCDENR) $4,000.00 E�gaes.
Detailed narrative description of stormwater treatment/management
Two copies of plans and specifications including
- Development/Project name
- Engineer and firm
-Legend
- North arrow
- Scale
- Revision number & date
- Mean high water line
- Dimensioned property/project boundary
- Location map with named streets or NCSR numbers
Original contours proposed contours spot elevations finished floor elevations
- Details of roads drainage features collection systems, and stormwater control measures
- Wetlands delineated, or a note on plans that none exist
- Existing drainage (including off -site) drainage easements, pipe sizes runoff calculations
- Drainage areas delineated
- Vegetated buffers (where required)
VII AGENT AUTHORIZATION
If you wish to designate authority to another individual or firm so that they may provide information on your
behalf please complete this section
Designated agent (individual or firm) PARKER & ASSOCIATES, INC
Mailing Address P O BOX 978
City
JACKSONVILLE
State NC
Phone [phone] Fax ( 910
Zip 28541
455-3441
VIII APPLICANT'S CERTIFICATION n , '
I (print or type name of person listed in General Information, item 2) E . C Coy 1
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 pr mphes with the requirements of 15A
NCAC 2H 1000 // � — ,
Signature
Form SWU-101 Version 3 99 Page 4 of 4
Date f/ —� 9�-�`�

C20051c308758
LIMITED LIABILITY COMPANY
ANNUAL REPORT
NAME OF LIMITED LIABILITY COMPANY
RMICO LLC
STATE OF INCORPORATION NC
SECRETARYOFSTATELLC IDNUMBER 0701579
NATURE OF BUSINESS
real eat,
REGISTERED AGENT
Ray E. McCotter
REGISTERED OFFICE MAILING ADDRESS P.O.BOX 12623
New Bern, NC 28561
REGISTERED OFFICE STREET ADDRESS 201 Howell Road
New Bern, NC 28562
Craven
SIGNATURE OF THE NEW REGISTERED AGENT
PRINCIPAL OFFICE TELEPHONE NUMBER 252-633-7949
SOSID 0701579
REJECTED 6/2/2006 2 59 00 PM
Elaine F Marshall
North Carolina Secretary of State
C200615300768
3-606-14618365
Privacy Redacdon
FEDERAL EMPLOYER ID NUMBER
SIGNATURE CONSTITUTES CONSENT TO THE APPOINTMENT
PRINCIPAL OFFICE MAILING ADDRESS 201 Howell Road
New Bern, NC 28562
PRINCIPAL OFFICE STREET ADDRESS 201 Howell Road
New Bern, NC 28562
MANAGERS/MEMBERS/ORGANIZERS
_ See Statement 1
Name �Y E MCC.'Oi - Name Name
nde Managing Member Title Title
Address P . O . BOX 12623 Address Address
New Bern, NC 28561
City city City
State ZIP State ZIP State ZIP
CERTIFICATION OF ANNUAL REPORTM7T BE COMO O BY ALL LIMITED LIABILITY COMPANIES
_ - -7
ORM MUST BE SIGNED BY A MANAGER/MEMB R DATE
Ray E. McCotter Manager
TYPE OR PRINT NAME TYPE OR PRINT TITLE
ANNUAL REPORT FEE $200 00 MAIL TO Secretary of State • Corporations Division • Post Office Box 29525 • Raleigh, NC 27626 0525
5e3231
0501 as

Pnvacy Redaction
RMICO LLC
NC Annual Report Members Names and Addresses Statement 1
Ray E. McCotter
P.O.Box 12623
New Bern, NC 28561
Statement(s) 1

PARKER & ASSOCIATES, INC.
Consulting Engineers - Land Surveyors - Land Planners
306 New Bridge Street + P O Box 976
Jacksonville, NC 28541-0976
[phone] . Fax [phone]
Deceived
0 U 13 -3
LETTER OF TRANSMITTAL
To Mr Chris Baker
NCDENR-Division of Water Quality
127 Cardinal Drive Extension
Wilmington, NC 28405-3845
WE ARE SENDING YOU -
DATE April 9, 2007
REF. The Palms Professional Center
Express Stormwater Submittal
One (1) original and One (1) copy of the Stormwater Application Form One (1) copy of the Wet Detention
Basin Supplement One (1) copv of the Engineering Calculations One (1) Review Fee Check for $4,000 00,
One (1) Narrative Two (2) copies of Plan Sheets (1 2, 5 and 6 of 7) and One (1) Stormwater Delineation Map
DELIVERY VIA
❑ Regular Mail
❑ UPS Overnight
® Hand ❑ Federal Express
❑ UPS Ground ❑ Other
THESE ARE TRANSMITTED AS CHECKED BELOW
® For Approval ❑ As Requested ❑ For Review and Continent
❑ For Your Use ❑ For Bids Due
❑ Other
Continents
wkl L
M J I hn cer, P E
NC Mr Ray E McCotter (w/paperwork)
CF (P), LAM
MJ K/gv
c2 MJK Baker PaltnsPio ESW 4 4 07
(If enclosures are not as noted, kindly notify us at once)
EMAIL ADDRESS TEXT MESSAGES TO partext(a)bizec rr com MAPS AND PLANS TO oaidraftCiu b¢cc rr com
♦ ENVIRONMENTAL ENGINEERING f STORMWATER, WATER AND WASTEWATER SYSTEMS
♦ FEASIBILITY AND DEVELOPMENT CONSULTING ♦ GLOBAL POSITIONING SURVEYS ♦ SUBDIVISION AND CONSTRUCTION PLANS

THE PALMS PROFESSIONAL CENTER
1
2
JACKSONVILLE, NORTH CAROLINA
STORMWATER DETENTION POND
ENGINEERING CALCULATIONS
AREA
Total Area Draining to and Including Pond
Impervious Area
Building , Drives, Parking, and Sidewalks
4yIVV "
,`PAN CAgp''.
2 33 Acres Z� QQOFEssio�9�2
SEAL
029091
73,980 SF%y ��GiNEEP�
.�'�,'
',���1111111111,1
Percent Impervious = Impervious = 73,980 = 72 9 % use 73 %
Total 101,4948
PERMANENT POND SURFACE AREA
From Table 3 3-2 from NCDENR Stormwater BMP Manual DOC-7-1-2005 for
73% impervious, basin depth with Vegetative Filter (85% TSS Removal) Yields
SA/DA = 4 3% @ 4 5' basin depth (Interpolation between 70 % and 80 %)
2 33 acres x 4 3% = 0 1 acres or 4364 SF surface area required
Top of permanent pond elevation is 9 0
Area at 9 0 elevation = 4,800 SF provided
4,800 SF provided > 4,364 SF required
3 TEMPORARY DETENTION STORAGE VOLUME
Retain 1" of runoff from area draining to pond
Use Schueler "Simple Method" from Stormwater Best Management Practices
Manual

NC&A
RV = 0 05 + 0 009 (1)
RV = Runoff coefficient (inch per inch)
I = Percent Impervious
RV = 0 05 + 0 009 (73) = 0 71 inch / inch
Find Temporary Storage Volume
V = (Design Rainfall) (RV) (Drainage Area)
= 1 inch X 0 71 inch / inch X 1 ft X 2 33 Acres X 43,560 SF/Ac
12 in
= 6,005 CF Required
4 TEMPORARY DETENTION STORAGE VOLUME
Use 1 3 Ft Temporary Pool
Area at 9 0 elevation (permanent pond) = 4,800 SF
Area at 10 3 elevation (temporary pond) = 6,108 SF
Average Area = 5,454 SF
Storage Vol = 5,454 SF x 1 3 Height = 7,090 C F provided
7,090 C F provided > 6,005 C F required
5 RELIEVE TEMPORARY STORAGE VOLUME IN 2 TO 5 DAYS
Q = Cd A 2gh (onffce equation)
Q = 6,005 C F - 2 days = 0 035 CFS
Q=6,005CF- 5 days = 0 0139 CFS
Cd=060
g = 32 2 ft/sec
h = 0 65 average height

ENG-3
For 2 Day Release
Solve For A = Q =
CD 2gh
Solve for Orifice Diameter. D
A=000902SF=rrD2
4
D = 0 107 ft = 1 28 inch
For 5 Day Release
Solve For A = Q =
CD 2gh
Solve for Orifice Diameter, D
A=00036SF=rrD2
4
D = 0 0675 ft = 0 81 inch
0 035 - 0 00902 S F
(0 6) 2(32 2)(0 65)
00139 = 0 0036 S F
(0 6) 2(32 2)(0 65)
Use 1 0 inch diameter orifice
6 SIZE OUTLET WIER PIPE AND OUTLET PIPE TO HANDLE 10 YR 1 HR
STORM
A 10 Year 1 Hour Storm Flow
Q = CiA
A = 2 33 acres
C = 09
i = 2 88 in /hr - 10 year, 1 hr storm
Q = 0 9 (2 88) 2 33 = 6 03 cfs

ENG-4
B Riser Wier (3'x3' Box)
Water height before rising 1'
11 3 - 10 3 = 1 0 feet
1 Outlet Box as Orifice
Q = Cd A 2gh (onfice equation)
Cd = 0 6 (typical value)
H = 10
Q = 603
2g=644
A = 9 0 (3'x3')
Q = 0 6(9) 64 4(1) = 43 3 CFS
Q = 43 3 CFS - will accept 10 year 1 hour flow
2 Outlet Weir
Water Height before rising 1' = 11 3 - 10 3 = 1 0 feet
Q =
CwL Han
Q=
603
Cw =
333
H = 1 foot
L= 603
32 = 1 81' 2' Weir Provided
3 33(1)
C Outlet Pipe
1 Check Orifice Equation
Q = Cd A 2gh (onfice equation)

ENG-5
A = rr D2 = Assume 18" Pipe = 1 77 S F
4
h = 1' Rise
Q=0 6(1 77) 2(32 2)(1)
Q = 8 5 CFS will handle 10 year 1 hour flow of 6 03 cfs
2 Check Gravity Flow
18" cap pipe
Use Manning's Equation
n = 024
R< = D/4 = 0 375'
Q = 149 X AR%S'/z
n
Installed at 1 0%
For 18" Corrugated Aluminum Pipe Q = 5 7 cfs Not Big Enough
For 18" Corrugated Aluminum Pipe Q = 6 5 cfs installed at 1 3% OK
USE 18" Corrugated Aluminum Pipe OUTLET PIPE at 1 3 %
7 100 Year Flood
Q = CiA
C=09
1100 = 4 15 in / hr for 1 hour duration flood
A = 2 33 acres
Q= 0 9 (4 15) (2 33) = 8 7 CFS
Design to handle 100-yr flood through emergency spillway prior to overtopping
pond

ENG-6
A Size Spillway as Wier
Height before overtopping pond = V 12 3'-11 3 = 1'
Q = CwLH 3/2 Solve for L L= Q
Cw = 333 CwH 3/2
H = 1
Q = 8 7 CFS
L = 87 =26ft
333 (1)^3/2
Spillway Width = 10' > 2 6 REQD
8 Forebav Volume
Forebay Volume shall contain approximately 20% of the total permanent
pond volume
Forebav Volume
Volume below berm - Area at bottom Elevation 5 5
= 143 SF
Area at berm Elevation 8
= 558 SF
Average Area X 2 5' Depth
= 876 CF
Volume of berm Elevation to permanent pool Elevation -
Area at berm Elevation 8 0
= 558 SF
Area at Elevation 9 0
= 800
Average area x 1' Depth
= 679 CF
TOTAL FOREBAY VOLUME
= 1555 CF

L LIM
Total Permanent Pool Volume
Forebay Volume Below Berm (shown above) = 1555 CF
Main Basin Volume - Area at bottom Elevation 4 5 = 441 SF
Area at berm Elevation 8 = 1750 SF
Average Area X 3 5' Depth = 3834 CF
Volume from berm Elevation 8 to Elevation 9 0
Area at Elevation 8 =
Area at Elevation 9 =
Average Area X 1' Depth =
TOTAL PERMANENT POOL VOLUME _
TOTAL FOREBAY VOLUME / TOTAL PERMANENT POOL VOLUME
1555/8264 = 18 8% OK
C2 MJK PalmsPro Cabs 3 27 07
1750 SF
4000 SF
2875 CF
8264 CF

The Palms Professional Center
Stormwater Narrative
February 2007
The Palms Professional Center is a proposed high density strip center located off of US 17 in
Jacksonville Stormwater will be piped and swaled to a Stormwater detention pond at the back of the
site Outflow from the pond will receive additional treatment in a 30 foot long vegetated filter, before
being released to natural grade The project drams to the Sandy Run Branch which is classified as
SC,NSW
A project boundary has been created such that there are no wetlands within the project
boundary The tract is 3 08 acres
Additional information can be found on the plans and permit applications

Point of Grass Creek
WOK05
21-35-7-1
H33NE8
SA,ORW
Poplar Creek
WOK02
19-16-2-3
H29SE7
C,NSW
Queen Creek
WOKO1
19-41-16
I30NW1
SA,HQW
Rawson Creek
WOK05
21-35-7-35
I33NW4
SA,ORW
Rocky Run
WOK02
19-16-2-2
129NE2
C,NSW
Rogers Bay
WOK02
19-39-1
J29NW2
SA HQW
Roosevelt Natural Area Swamp
WOK03
20-36-9 5-(1)
I31NE4
C,Sw,ORW
Roosevelt Natural Area Swamp
WOK03
20-36-9 5-(2)
I31NE4
SA Sw ORW
Russell Creek
WOK03
21-26
H32SW9
SA,HQW
Salliers Bay
WOK02
19-41-3
I29SE5
SA,HQW
Salters Creek
NEU14
21-35-7-10-2
H33NW9
SC
Salters Creek
WOK04
21-35-7-10-2
H33NW9
SC
Sanders Creek
WOK03
20-36-4-1
I30NE3
SA,HQW
Sanders Creek
WOK03
20-36-6
I31NW4
SA,ORW
Sandy Branch
WOK03
20-36-7-1-1-1
I31NW1
SA HQW
Sandy Branch
WOK03
21-13
H31SEB
C
Sandy Run Branch
WOK02
19-10-1
H29SW9
SC,NSW
Saunders Creek
WOKO1
19-41-12
I30SW2
SA,HQW
Scales Creek
WOK02
19-- —16 —4--3
H29SW9
SC,HQW,NSW
School House Branch
WOK03
21-8
H31SE7
C
Schoolhouse Branch
WOKO1
20-23-1
H30SE7
SA,HQW
Shacklefoot Channel
WOK01
19-41-9
I30SW2
SA,HQW
Sheep Pen Creek
WOK05
21-35-7-6
H33SE4
SA,HQW
Sheep Pen Creek
WOK05
21-35-7-32
I33NW4
SA,ORW
Shoe Branch
WOK03
21-6
H31SW6
C
Sikes Branch
WOK03
20-36-6-1-1
I31NW4
SA,HQW
Sleepy Creek
WOK04
21-35-1-12-1
I32NE3
SA,HQW
Smiths Swamp
WOK03
21-9
H31SW9
C
Smiths Swamp Branch
WOK03
21-10
H31SE7
C
Smyrna Creek
WOK04
21-35-7-22-1
H33SW4
SA HQW