SW7050508_CURRENT PERMIT_20160114

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
DOC TYPE
CURRENT PERMIT
APPROVED PLANS
❑ HISTORICAL FILE
DOC DATE
YYYYMMDD �

Energy, Mineral
and Land Resources
ENVIRONMENTAL OUALITY
o
PAT MCCRORY
Governor
DONALD R. VAN DER VAART
Secrerary
TRACY DAVIS
Director
January 14, 2016
Old Bear, LLC
Mr. John J. Snow Ili
PO Box 661
Murphy, NC 28906
Subject: Stormwater Permit No. SW7050508 — Ownership Transfer
Rivershore Marina
High Density Project
Craven County
Dear Mr. Snow:
The Washington Regional Office received a complete Stormwater Management Permit
Application for the ownership transfer of Rivershore Marina on December 10, 2015 from
Wells Fargo Bank NA to Old Bear, LLC. Staff review of the plans and specifications has
determined that the project, as proposed, will comply with the Stormwater Regulations
set forth in Title 15A NCAC 2H.1000.' We are forwarding the ownership change of
Permit No. SW7050508 dated January 14, 2016, for the construction of the subject
project.
This permit shall be effective from the date of issuance until May 19, 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)
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, 6714 Mail Service Center, Raleigh, NC
27699-6714. 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 me at [phone].
Sincerely,
Samir Dumpor, PE
Environmental Engineer
cc: Michael Strader, PE, Quible & Associates, P.C.
Ryan P. Connelly, Assistant VP, Wells Fargo Bank, NA
Craven County Planning/Building Inspections
Doug Huggett, DCM — Morehead
,,^ashington Regional Office SW File
State of North Carolina 15nvironmental Quality I Energy, Mineral and band Resources
943 Washington Square Mall. j Washington, NC 27899
252-946-6481 T

STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENTAL QUALITY
DIVISION OF ENERGY, MINERAL, AND LAND RESOURCES
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
Old Sear, LLC
Rivershore Marina
Craven County
FOR THE
construction, operation and maintenance of a wet detention basin 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 Energy,
Mineral, and Land Resources and considered a part of this permit.
This permit shall be effective from the date of issuance until May 19, 2019, 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 1.6 on page 3 of this permit. The stormwater
control has been designed to handle the runoff from 175,111 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. The built -upon area for the future
development is limited to 72,614 square feet.
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

6. The following design criteria have been provided in the wet -detention pond and
must
be maintained at design condition:
a.
Drainage Area, acres:
7.979
b.
Total Impervious Surfaces, ft2:
175,114
On -site Buildings, ft2:
48,612
On -site Streets, ft2:
39,736
On -site Parking, ft2:
14,152
On -site Future, ft2:
72,614
C.
Design Storm, inches:
1.0
d.
Pond Depth, feet.
4.0.
e.
TSS removal efficiency:
85%
f.
Permanent Pool Elevation, FMSL:
3.0
g, _
Permanent Pool Surface Area, ft2:
12,257 _
h.
Permitted Storage Volume, ft3:
14,589
i.
Temporary Storage Elevation, FMSL:
4.1
j.
Controlling Orifice:
1.5" O pipe
k.
Permitted Forebay Volume, ft3:
4,745
I.
Receiving Stream/River Basin:
Duck Creek 1 Neuse
M.
Stream Index Number:
27-103
n.
Classification of Water Body:
"SC; Sw, NSW'
II'. SCHEDULE OF COMPLIANCE
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 times provide the operation and maintenance
necessary to assure the permitted stormwater system functions at optimum
efficiency. The approved Operation and Maintenance Plan must be followed in its
entirety and maintenance must occur at the scheduled intervals including, but not
limited to:
a. Semiannual scheduled inspections (every 6 months).
b. Sediment removal.
C. Mowing and revegetation of slopes and the vegetated filter.
d. Immediate repair of eroded areas.
e. Maintenance of all slopes in accordance with approved plans and
specifications.
f. Debris removal and unclogging of outlet structure, orifice device, flow
spreader, catch basins and piping.
g. Access to the outlet structure must be available at all times.
4. Records of maintenance activities must be kept and made available upon
request to authorized personnel of DEMLR. The records will indicate the date,
activity, name of person performing the work and what actions were taken.
5. 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 118 horsepower.
Page 3 of 7

6. The facilities shall be constructed as shown on the approved plans. This permit
shall become voidable unless the facilities are constructed in accordance with the
conditions of this permit, the approved plans and specifications, and other
supporting data.
7. Upon completion of construction, prior to issuance of a Certificate of Occupancy,
and prior to operation of this permitted facility, a certification must be received
from an appropriate designer for the system installed certifying that the permitted
facility has been installed in accordance with this permit, the approved plans and
specifications, and other supporting documentation. Any deviations from the
approved plans and specifications must be noted on the Certification. A
modification may be required for those deviations.
8. If the stormwater system was used as an Erosion Control device, it must be
restored to design condition prior to operation as a stormwater treatment device,
and prior to occupancy of the facility.
9. Access to the atormwater 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.
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.
14. This permit shall be effective from the date of issuance until May 19, 2019.
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.
Page 4 of 7

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 Energy, Mineral, and
Land Resources, 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 Energy, Mineral, vT_
and Land Resources, in acrd coance 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 fail to perform satisfactorily, including the creation of
nuisance conditions, the Permittee shall take immediate corrective action,
including those as may be required by this Division, such as the construction of
additional or replacement stormwater management systems.
5. The permittee grants DEQ Staff permission to enter the property during normal
business hours for the purpose of inspecting all components of the permitted
stormwater management facility.
6. The permit may be modified, revoked and reissued or terminated for cause. The
filing of a request for a permit modification, revocation and reissuance or
termination does not stay any permit condition.
7. Unless specified elsewhere, permanent seeding requirements for the stormwater
control must follow the guidelines established in the North Carolina Erosion and
Sediment Control Planning and Design Manual.
8. Approved plans and specifications for this project are incorporated by reference
and are enforceable parts of the permit.
9. The permittee shall notify the Division of any name, ownership or mailing
address changes within 30 days.
Permit issued this,the 14�h day of January, 2016.
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
for
Tracy E. Davis, P.E., CPM, Director
Division of Energy, Mineral, and Land Resources
By Authority of the Environmental Management Commission
Permit No. SW7050508
Page 5 of 7

Rivershore Marina
Stormwater Permit No. SW7050508
Craven 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 project,
(Project)
for (Project Owner) hereby state that, to the
best of my abilities, due care and diligence was used in the observation of the project
construction such that the construction was observed to be built within substantial
compliance and intent of the approved plans and specifications.
The checklist of items on page 2 of this form is included in the Certification.
Noted deviations from approved plans and specification:
Signature
Registration Number
Date
SEAL
Page 6of7

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. Ail 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: NCDEQ-DEMLR Regional Office
Craven County Planning / Building Inspections
Page 7 of 7

ROY COOPER NORTH CAROLINA
Governor Environmental Quality
MICHAEL S. REGAN
Secretary
WILLIAM E. (TOBY) VINSON, JR
Interim Director
September 10, 2018
Old Bear, LLC
Attention: Mr. John J. Snow, III, Manager
P.O. Box 661
Murphy, NC 28906-0661
Subject: Stormwater Permit Renewal
Stormwater Management Permit SW7050508
Rivershore Marina
Craven County
Dear Mr. Snow:
A Division of Energy, Mineral, and Land Resources file review has determined that
Stormwater Permit SW7050508 for a stormwater treatment system consisting of a wet
detention pond to serve a proposed Rivershore Marina located off Galloway Road near
Bridgeton, NC expires on May 19, 2019. This is a reminder that permit renewal
applications are due 180 days prior to expiration. We do not have a record of receiving
a renewal application.
Please submit a completed permit renewal application along with a $505.00 fee for
permit renewal. Permit application forms for renewal can be found on our website at:
htt s: de .nc. ov about divisions ener -mineral-land-resources ener -mineral-land-
rules/stormwater-program%post-construction. North Carolina General Statutes and the
Coastal Stormwater rules require that this property be covered under a stormwater
permit if this project is constructed. Failure to maintain a permit subjects the owner to
assessment of civil penalties.
if you have questions, please feel free to contact me at [phone]. 1 will be glad to
discuss this by phone or meet with you. If you would like I can e-mail you a copy of the
renewal application. You can request a copy by e-mailing me at
[e-mail].
Sincerely,
Roger K. Thorpe
Environmental Engineer
North Carolina Department of Environmental Quality I Division of Energy, Mineral and Land Resources
Washington Regional Office 1 943 Washington Square Mail I Washington, North Carollna 27889

..-'.'OFFICE USE ONLY
Date Received
Fee Paid
Permit Number
V
State of North Carolina Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
This form may be photocopied for use as an original
I. GENERAL INFORMATION
1. Applicants name (specify the name of the corporation, individual, etc. who owns the project):
Big Cypress Land and Development Company.
2. Print Owner/Signing Official's name and title (person legally responsible for facility and compliance):
Duncan Newkirk, Manager
3. Mailing Address for person listed in item 2 above:
P.O. Box 746
City: Mt. Pleasant. State: SC Zip 29465-0746
Telephone Number: { ) {843) 388-6585 m , &y{, - 3VS- 7-
// 14�
4. Project Name (subdivision, facility, or establishment r ame - should be consistent with project name on plans,
specifications, letters, operation and maintenance agreements, etc.):
Rivershore Marina
5. Location of Project (street address):
Galloway Road _
City: Bridgeton County: Craven
6. Directions to project (from nearest major intersection):
Exit US Highway 17 at Bridgeton to NC Highway 55 east towards Bayboro, take the first right onto
Galloway Road, follow Galloway Road until road ends, site is at end of Galloway Road
7. Latitude: 35 D 06" 15" Longitude: 77D 00' 22" of project
S. Contact person who can answer questions about the project:
Name: R.M. Pete Chiles, Jr., P.E. Telephone Number
II. PERMIT INFORMATION:
1. Specify whether project is (check one): X New
Form SWU-l0l Version 3.99 Page I of
[phone]
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 Requirements (check applicable blanks):
X CAMA Major X Sedimentation/Erosion Control X 404/401 Permit _ NPDES Stormwater
Information on required state permits can be obtained by contacting the Customer Service Center at
1-877-623-6748.
1 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.
2. Stormwater runoff from this project drains to the Neuse River basin.
3. Total Project Area: 7.979 acres 4. Project Built Upon Area: 50.4 %
5. How many drainage areas does the project have? 1
6. Complete the following information for each drainage area. If there are more than two drainage areas in the project, attach
an additional sheet with the information for each area provided in the same format as below.
Basin Information
Receiving Stream Name
Drainage` Area 17' `'' Y
Duck Creek
Drainage Area 2
Receiving Stream Class
SC -SW -NSW
Drainage Area
7.979 AC [347,565 sq. ft.]
Existing Impervious' Area
0 AC
Proposed Impervious "Area
4.02 AC [175,111 sq. ft.1
% Impervious " Area (total)
50.4%
Impervious " 5urface Area
On -site Buildings
Drainage Area 1
1.116 AC 148,612 sq. ft]
Drainage Area 2
On -site Streets
0.912 AC [39,736 sq. ft]
On -site Parking
0.325 AC [14,152 sq. ft.]
On -site Sidewalks
0
Other on -site
1,667 AC [72,614 sq. ft] FUTURE
Off -site
0
Total: 4.02 AC [175,111 sq. ft.]
Total:
* Impervious area is defined as the built upon area including, but not limited to, buildings, roads, parking areas, sidewalks,
gravel areas, etc.
Form SWU-101 Version 3.99 Page 2 of

1 7. How was the off -site impervious area listed above derived? N/A
IV. DEED RESTRICTIONS AND PROTECTIVE COVENANTS
The following italicized deed restrictions and protective covenants are required to be recorded for all
subdivisions, outparcels and future development prior to the sale of any lot. If lot sizes vary significantly, a
table listing each lot number, size and the allowable built -upon area for each lot must be provided as an
attachment.
1. The following covenants are intended to ensure ongoing compliance with state storinwater nianagenrent permit tuunuber
W 705 al—d r as issued by the Division of Water Quality. These covenants tnay not be changed
or deleted without the consent of the State.
2. No more than square feet of any lot shall be covered by structures or impervious materials. Impervious
materials include asphalt, gravel, concrete, brick, stone, slate or similar material but do not include wood decking or the
water surface of swimming pools.
3. Swales shall not be filled in, piped, or altered except as necessary to provide driveway crossings.
4. Built -upon area in excess of the permitted amount requires a state stormwater management permit unodifrcation prior to
construction.
5. All pertnitted runoff from outparcels or future development shall be directed into the pernritted storinwater control system.
These connections to the storinwater control system shall be performed in a manner that maintains the integrity and
performance of the syste►n as pertnitted.
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
1 Form SWU-101 Version 3.99 Page 3 of 4

VI. SUBMITTAL REQUIREMENTS
Only complete application packages will be accepted and reviewed by the Division of Water Quality (DWQ).
A complete package includes all of the items listed below. The complete application package should be
submitted to the appropriate DWQ Regional Office.
1. Please indicate that you have provided the following required information by initialing in the space provided
next to each item.
• Original and one copy of the Stormwater Management Permit Application Form
• One copy of the applicable Supplement Form(s) for each BMP
• Permit application processing fee of $420 (payable to NCDENR)
• Detailed narrative description of stormwater treatment/management
Spies 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)
VH. 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): Robert M. Chiles, P.E. Engineers & Consultants
Mailing Address: P.O. Box 3496
City: New Bern State: N.C. Zip: 28564-3496
Phone: [phone] Fax: [phone]
VIII. APPLICANT'S CERTIFICATION
i, (print or type Marne of person listed in General Information, item 2) DLINCAN NEWKIRK 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.
Signature: iy—�'�•��l.Le A Date:
1 Form SWU-101 Version 3.99 Page 4 of 4

Permit No.
(to be provided by DWQ)
State of North Carolina Department of Environment and Natural Resources Division of
Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
WET DETENTION BASIN SUPPLEMENT
DWO 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
1 Project Name: Rivershore Mari
1
n
0
Contact Person: Duncan Newkirk Phone Number. [phone]
For projects with multiple basins, specify which basin this worksheet applies to:
elevations
Basin Bottom Elevation ft.
Permanent Pool Elevation ft.
Temporary Pool Elevation ft
Areas
Permanent Pool Surface Area
Drainage Area ac.
Impervious Area ac
Volumes
Permanent Pool Volume cu. ft.
Temporary Pool Volume cu. ft
Forebay Volume cu. ft.
Other parameters
SAIDA
Diameter of Orifice in
Design Rainfall
Design TSS Removal 2
Footnotes:
-1.0' (floor of the basin)
3.0' (elevation of the orifice)
4. V (elevation of the discharge .structure overflow)
12,257.1 sq. ft. (water surface area at the orifice elevation)
7.36 AC (on -site and off -site drainage to the basin)
4.02 AC (on -site and off -site drainage to the basin)
24,755 (combined volume of main basin and forebay)
14,589 (volume detained above the permanent pool)
4745 23.7% (approximately 20% of total volume)
3.32%(surface area to drainage area ratio from DWQ table)
1.5" (2 to 5 day temporary pool draw -down required)
1.0 in.
85% (minimum 85% required)
Form SWU-102 Rev 3.99 Page 1 of
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 nonstandard 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.
[11

1 11. 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
,a— The permanent pool depth is between 3 and 6 feet (required minimum of 3 feet).
6' The forebay volume is approximately equal to 20% of the basin volume.
cThe temporary pool controls runoff from the design storm event.
d�The temporary pool draws down in 2 to 5 days,
e.—&— lf required, a 30-foot vegetative filter is provided at the outlet (include non -erosive flow calculations)
The basin length to width ratio is greater than 3:1.
g The basin side slopes above the permanent pool are no steeper than 3:1.
hr�n� A submerged and vegetated perimeter shelf with a slope of 6:1 or less (show detail).
i. Vegetative cover above the permanent pool elevation is specified.
j - A trash rack or similar device is provided for both the overflow and orifice.
k.A recorded drainage easement is provided for each basin including access to nearest right-of-way.
1. A114 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.
m.�CA mechanism is specified which will drain the basin for maintenance or an emergency
Ill. 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) (X) does 0 does not incorporate a vegetated filter at the outlet. This system
(check one) (X) does 0 does not incorporate pretreatment other than a forebay.
Form S WU-102 Rev 3.99 Page 2 of 4

Maintenance activities shall be performed as follows:
1. 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.
1. 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.
2. Inspect and repair the collection system (i.e. catch basins, piping, swales, riprap, etc.) quarterly to
maintain proper functioning.
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 into accumulated sediments.
When the permanent pool depth reads 3 feet in the main pond, the sediment shall be removed.
When the permanent pool depth reads 3 feet in the forebay, the sediment shall be removed.
BASIN DIAGRAM
ill in the blanks)
":ovalE�Elot.o
Permanent Pool Elevation 3. o
SedimenSedimentRemoval Elevation 0,C) 75%
Bot----------=-------------------�--------- ------
Bottom Elevation
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.
1 Form SWU-102
Rev 399
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.
1 Print name: Duncan Newkirk
Title: Manager Big -Cypress Land & Development Company LLC
Address: P.O. Box 746 Mt. Pleasant, SC 29456
Phone: [phone]
Signature: Date: S/6/057
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, __ ������¢- , �� �t.{.•^��5 , a Notary Public for the State of
i vbl i`�o , County of C-11 ,44- le do hereby certify that
u rJc,►J C . A/ecJ % i personally appeared before me this day of
`.c. 6tisr and acknowledge the due execution of the forgoing wet detention basin
maintenance requirements. Witness my hand and official seal,
Ij UAL
My commission expires 012- 7 0q
Form SWU-102 Rev 3.99 Page 4 of 4