HomeMy WebLinkAboutSW7990507_HISTORICAL FILE_20140407 w
ERR
North Carolina Department of Environment and Natural Resources
Pat McCrory John E. Skvarla, III
Governor Secretary
April 7, 2014
Mr. Michael Hawkins, Member Manager
Magnolia Investors, LLC
P.O. Box 12821
New Bern, NC 28561
Subject: Stormwater Permit No. SW7990507 Renewal
Magnolia Place Business Park
High Density Project
Craven County
Dear Mr. Hawkins:
The Washington Regional Office received a complete Stormwater Renewal Application for the
Magnolia Business Park located at 130 Market Street in New Bern, NC on March 10, 2014. Staff
review of the application has determined that the permit can be renewed. We are forwarding
Permit No. SW7990507 dated April 7, 2014, for a wet detention pond to serve this project.
This permit replaces all previous State St a e ermits for this site. This permit shall be
effective from the date of issuance until ril 7 202 nd shall be subject to the conditions and
limitations as specified therein. Please pay specs ention 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. The
issuance of this permit does not resolve any previous violations of the stormwater rules. A separate
letter concerning a recent inspection is also being sent to you.
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 (252) 948-3923.
Sincerely,
Roger K. Thorpe
Environmental Engineer
Division of Energy,Mineral,and Land Resources.Land Quality Section
Washington Regional Office
943 Washington Square Mall,Washington,North Carolina 27889•Phone:252-946-6481/FAX:252-975-3716
Internet:http://i)odal.nodenr.oralweb/Inland-quality
An Equal Opportunity 1 Affirmative Action Employer—50%Recycled 110%Post Consumer Paper
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF ENERGY, MINERAL, AND LAND RESOURCES
STATE STORMINATER 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
Magnolia Investors, LLC
Magnolia Place Business Park
130 Market Street, New Bern, NC
FOR THE
construction, operation and maintenance of a wet pond system 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 April 7, 2022, 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 1.7 of this permit. The stormwater control has been
designed to handle the runoff from 5.27 acres of impervious area.
3. The tract will be limited to the amount of built-upon area indicated in Section 1.7
of this permit, and as shown on the approved plans. The built-upon area for the
future development is limited to 5.27 acres.
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.
6. The built-upon areas associated with this project shall be located at least 30 feet
landward of all surface waters.
7. The following design criteria have been permitted for the permeable pavement
and the infiltration basin and must be provided and maintained at design
condition:
a. Drainage Area, acres: 7.19
b. Total Impervious Surfaces, acres: 5.27
C. Design Storm, inches: 1.0
d. Basin Depth, feet: 5.0
e. Permitted Storage Volume ft3: 19,810
f. Permitted Surface Area, ft2 12,740
g. Controlling Orifice 3-one inch holes @ elev. 22.3 ft.
h. Receiving Stream/River Basin: ut to Neuse River/
Neuse Basin
i. Classification of Water Body: "C - NSW"
II. SCHEDULE OF COMPLIANCE
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 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. Mowin.9 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 bypass structure, infiltration media, flow
spreader, catch basins, piping and vegetated filter.
g. A clear access path to the bypass structure must be available at all times.
4. Records of maintenance activities must be kept for each permitted BMP. The
reports 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. 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.
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. Access to the stormwater facilities shall be maintained via appropriate
easements at all times.
9. 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.
10. The permittee shall submit final site layout and grading plans for any permitted
future areas shown on the approved plans, prior to construction.
11. A copy of the approved plans and specifications shall be maintained on file by
the Permittee at all times.
12. 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
1. This permit is not transferable to any person or entity 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 completed Name/Ownership Change form
to the Division of Energy, Mineral, and Land Resources, signed by both parties,
and accompanied by the appropriate documentation as listed on page 2 of the
form. The approval of this request will be considered on its merits and may or
may not be approved.
2. The permittee is responsible for compliance with all permit conditions until such
time as the Division approves the transfer request.
3. 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,
and Land Resources, in accordance with North Carolina General Statute 143-
215.6A to 143-215.6C.
4. 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.
5. 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.
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.
7. The permit issued shall continue in force and effect until revoked or terminated.
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.
8. Unless specified elsewhere, permanent seeding requirements for the stormwater
controls must follow the guidelines established in the North Carolina Erosion and
Sediment Control Planning and Design Manual.
9. Approved plans and specifications for this project are incorporated by reference
and are enforceable parts of the permit.
10. 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 NCAC
2H.1000, and NCGS 143-215.1 et. al.
11. The permittee shall notify the Division in writing of any name, ownership or
mailing address changes at least 30 days prior to making such changes.
12. This permit shall be effective from the date of issuance until April 7, 2022.
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.
Permit issued this the 7th day of April 2014.
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
Tr for
acy E. Daws, P , Director
Division of Energy, Mineral, and Land Resources
By Authority of the Environmental Management Commission
Permit No. SW7990507
Wa �a
ROY COOPER
Governor ,
ELIZABETH S.BISER
Secretary
BRIAN WRENN NORTH CAROLINA
Director Environmental Quality
September 21, 2021
Magnolia Investors, LLC
Attention: Michael Hawkins, Manager
206 Bridge Pointe Dr.
New Bern, NC 28562
Subject: Stormwater Permit Renewal
Stormwater Management Permit SW7990507
Magnolia Place Business Park
Craven County
Dear Mr. Hawkins:
A Division of Energy, Mineral, and Land Resources file review has determined that
Stormwater Permit SV 7990507 for a stormwater treatment system consisting of a wet
detention pond serving the Magnolia Place Business Park in New Bern, NC expires on
April 7, 2022. 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 within the required time. Permit application forms for renewal can be
found on our website at: ht ps:'!deq.nc.go\;!aboutldivisiors"ene,gy-rr:ineral-and-land-
esourcesrstorrrnnlat�rls;orrr;ovater orcgram/post str n 2. North Carolina General
Statutes and the Coastal Stormwater rules require that this property be covered under a
stormwater permit. Failure to maintain a permit subjects the owner to assessment of
civil penalties.
If you have questions, please feel free to contact me at (252) 948-3923. 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
application forms. You can request a copy by e-mailing me at
roaeO J.en F.gov
Sincerely,
Roger K. Thorpe
Environmental Engineer
�toi Caro ina Deoa-= rent DfEr lonm ntal Qual .irisiei of ie y V ire,a'arc'_and Resources
-Vas ii Eton P^glc al4fcc 9-+7 Vasl inyron5�t ar `Aall ` srrgeo^.Voi hcai ling_'889
o e.r�r.maa 'S>QAAe481
r ®
NCDENR
North Carolina Department of Environment and Natural Resources
Division of Energy, Mineral, and Land Resources
Land Quality Section
Tracy E. Davis, PE, CPM Pat McCrory,Governor
Director John E. Skvada, III, Secretary
January 15, 2014
Mr. Michael Hawkins, Manager
Magnolia Investors, LLC
P.O. Box 12821
New Bern, NC 28561
Subject: Failure to Renew Stormwater Permit
Stormwater Management Permit SW7990507
Magnolia Place Business Park
Craven County
Dear Mr. Hawkins:
A Division of Energy, Mineral, and Land Resources file review has determined that Stormwater Permit SW7990507 has
expired and the Division has not received an application for renewal. The stormwater rules(15 A NCAC 2H .1000) require
that applications for permit renewals be submitted 180 days prior to the expiration of a permit. Operation of a stormwater
treatment facility without a valid permit is a violation of NC General Statute 143-215.1 and may result in an appropriate
enforcement action including assessment of civil penalties.
Please submit a completed renewal application and processing fee of$505.00 within 30 calendar days. A permit renewal
application can be found on our website at http://portal.ncdeni.org/web/lr/state-stor,mwater-forms docs . If you have
questions, please feel free to contact me at(252) 948-3923.
Sincerely,
Roger K. Thorpe
Environmental Engineer
Washington Regional Office
Cc McKim &Creed—New Bern
Washington Regional Office
943 Washington Square Mall,Washington,North Carolina 27889 • Phone: 252-946-6481 /FAX: 252-975-3716
Internet: hftp://www.portal.ncdenr.org/web/ir/land-quality
Ra
State of North Carolina
Department of Environment ' •
and Natural Resources
Division of Water Quality -
James B. Hunt, Jr., Governor NCDENR
Wayne McDevitt, Secretary
Kerr T. Stevens, Director NORTH CAROLINA DEPARTMENT OF
ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
June 21 , 1999
Mr. Mike Hawkins , Manager
Magnolia Investors, LLC
P.O. Box 12821
New Bern, NC 28561
Subject: Permit No. SW7990507
Magnolia Place Business Park
High Density Stormwater Project
Craven County
Dear Mr. Hawkins:
The Washington Regional office received the completed
Stormwater Application for the subject project on June 15, 1999 .
Staff review of the plans and specifications has determined that
the project, as proposed, will comply with the Stormwater
Regulations set forth in Title 15A NCAC 2H. 1000. We are forwarding
Permit No. SW7990507 dated June 21, 1999 to Magnolia Investors,
LLC.
This permit shall be effective from the date of issuance until
June 21 , 2009 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, P.O. Drawer 27447, Raleigh, NC 27611-7447 .
Unless such demands are made this permit shall be final and
binding.
943 Washington Square Mall,Washington,North Carolina 27889 Telephone(252)946-6481 FAX(252)946-9215
An Equal Opportunity Affirmative Action Employer
Mike Hawkins
June 21 , 1999
Page Two
If you have any questions, or need additional information
concerning this matter, please contact Roger Thorpe at ( 252) 946-
6481 , extension 214 .
Sincerely,
fvjim 1�7u1 lig n
Water Quality Regional Supervisor
Washington Regional Office
cc: McKim & Creed - New Bern
VZ�jraven County Inspections
shington Regional office
Central Files
State Stormwater Management Systems
Permit No. SW7990507
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
Magnolia Investors, LLC
Craven County
FOR THE
construction, operation and maintenance of stormwater management
systems 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 for a wet
detention pond to serve nine lots in Magnolia Place Business park
in Craven County.
This permit shall be effective from the date of issuance until June
21 , 2009 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 on page 2 of this permit, the
Project Data Sheet.
3 . Approved plans and specifications for this project are
incorporated by reference and are enforceable parts of the
permit.
DIVISION OF WATER QUALITY
PROJECT DATA
Project Name: Magnolia Place Business Park
Permit Number: SW7990507
Location: Craven County
Applicant: Magnolia Investors , LLC
Mailing Address: P.O. Box 12821
New Bern, NC 28561
Application Date: 05/11/99
Water Body Receiving
Stormwater Runoff: UT-Neuse River
Classification of Water Body: C
Site Area: 7 . 19 ac
Total Impervious: 5. 27 ac
Pond Depth: 5. 0 ft
Required Storage Volume: 18 ,922 cf
(based on 1 inch)
Provided Storage Volume: 19 ,810 cf
Required Surface Area: 12 , 371 sf
Provided Surface Area: 12 ,740 sf
Controlling Orifice: 3 one inch orifices @ elev 22 . 3
4 . No homeowner/lot owner/developer shall be allowed to fill in,
alter, or pipe any vegetative practices (such as swales) shown
on the approved plans as part of the stormwater management
system without submitting a revision to the permit and
receiving approval from the Division.
5. The following items will require a modification to the permit:
a. Any revision to the approved plans, regardless of size
b. Project name change
C. Transfer of ownership
d. Redesign or addition to the approved amount of built-upon
area
e. Further subdivision of the project area.
In addition, the Director may determine that other revisions
to the project should require a modification to the permit.
6. The Director may notify the permittee when the permitted site
does not meet one or more of the minimum requirements of the
permit. Within the 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.
II_ SCHEDULE OF COMPLIANCE
1 . The permittee will comply with the following schedule for
construction and maintenance of the stormwater management
system.
a. 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 surfaces
except roads.
b. During construction, erosion shall be kept to a minimum
and any eroded areas of the system will be repaired
immediately.
2 . The facilities must be properly maintained and operated at all
times. The approved Operation and Maintenance Plan must be
followed in its entirety and maintenance must occur at the
scheduled intervals.
3 . The permittee shall at all times provide the operation and
maintenance necessary to assure the permitted stormwater
system functions at optimum efficiency including, but not
limited to:
a. Semiannual scheduled inspections (every 6 months)
b. Sediment removal
C. Mowing and revegetation of side slopes
d. Immediate repair of eroded areas
e. Maintenance of side slopes in accordance with approved
plans and specifications
f . Debris removal and unclogging of outlet structure,
orifice device and catch basins and piping.
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. 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 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. Mail the Certification to the
Washington Regional Office, 943 Washington square Mall ,
Washington, North Carolina, 27889 , attention Division of Water
Quality.
7. A copy of the approved plans and specifications shall be
maintained on file by the Permittee for a minimum of five
years from the date of the completion of construction.
III. GENERAL CONDITIONS
1. This permit is not transferable. In the event there is a
desire for the facilities to change ownership, or there is a
name change of the Permittee, a formal permit request must be
submitted to the Division of Water Quality accompanied by an
application fee, documentation from the parties involved, and
other supporting materials as may be appropriate. The
approval of this request will be considered on its merits and
may or may not be approved.
2 . Failure to abide by the conditions and limitations contained
in this permit may subject the Permittee to enforcement action
by the Division of Water Quality, in accordance with North
Carolina General Statute 143-215. 6(a) to 143-215.6(c) .
3 . The issuance of this permit does not preclude the Permittee
from complying with any and all statutes, rules, regulations,
or ordinances which may be imposed by other government
agencies ( local , state, and federal) which have jurisdiction.
Magnolia Place Business Park
Craven County
Stormwater Permit No. SW7990507
Designer's Certification
1 as a duly
registered Professional Engineer 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.
Signature
Registration Number
Date
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 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.
Permit issued this the 21 st day of June, 1999 .
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
J-�- Kerr T. Stevens, Director
Division of Water Quality
By Authority of the Environmental Management Commission
Permit Number SW7990507
wn ��
State of North Carolina
Department of Environment `
and Natural Resources r
Division of Water Quality
James B. Hunt, Jr., Governor r_
Wayne McDevitt, Secretary NCDENRKerr T. Stevens, Director NORTH CAROLINA DEPARTMENT OF
ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
June 2 , 1999
Mr. Mike Hawkins, Manager
Magnolia Investors, LLC
P.O. Box 12821
New Bern, NC 28561
Subject: Stormwater Permit SW7990507
Magnolia Place Business Park
Dear Mr. Hawkins: Craven County
This office received your stormwater application and
supporting information on May 11, 1999 for a proposed Business Park
in Craven County. A preliminary review of your project has been
completed. The following additional information is needed before a
permit can be issued:
- The length to width ratio of the wet detention pond needs
to be 3 :1 or greater. If this can not be accomplished, some
other method of assuring that there is no short circuiting in
the pond must be provided.
- How will the stormwater from the area marked on the plan as
future development be handled?
- A detailed narrative description of the stormwater
treatment system should be included.
The above information must be submitted within 30 days, or
your application will be returned as incomplete. You should also
be aware that the Stormwater Rules require that the permit be
issued prior to any development activity. If you have questions,
please feel free to contact me at (252) 946-6481 , extension 214.
Sincerely, ��
Rbge K. Thorpe P.E.
Environmental Engineer
Washington Regional Office
cc: C5E�ven County Inspections
Washington Regional Office
McKim & Creed, New Bern
943 Washington Square Mall,Washington,North Carolina 27889 Telephone(252)946-6481 FAX(252)946-9215
An Equal Opportunity Affirmative Action Employer
JUN 15 1999
WASHINGTON REGIONAL OFFICE
owo
CL20510N and 5LPIML"NTATION
CONTROL PLAN
for
MAGNOLIA FLAG
DUNNr55 rAKK
Townohip No. 7 Graven County
North Carolina
Noi �ttp�h
AA i
'ss
�a $ E Lib r"
April 29.1999
TABLE of CONTENT5
Narrative................................................................................................................................................. 3
Construction 56hedule....................................................................................... 4
MaintenancePIan......:.......................................................................................................................... 5
omporary Gravel Construction L"ntrance/Exit........................................................................6.06
Ternporaty5eeding.................................................................................................................I.....I.,....6.10
i'er rrrarlent 5eeding.............................................................................................................................6.11
I;Ipr•ap................................... ..........,..,.........16.15
Sedimentpence....................................................................................................................................6.62
CheckPam..............................................................................................................................................0.83
Erosion and 5edimentatlon Control flan Checklist.....:..........................................................7.53
Calculations attached
r
2
NAKKATIVL
1'�ojectl2�srrlptiotl
The purpose of the project is to construct a paved roadway. Approximately 2.2 acres will
be disturbed during this construction period. The site is 7.19 acres located in, Township
No. 7, Graven County, North Carolina. New roadway will be located off of NC5K 1155 which
Is a service road for U5 Flighwoy 70West.
Magnolia Place, Business 12a'rk 5ubdivieion, will have approximately 23020 scl ft of
impervious roadway, each of the 9 lots will have approximately 22949 sd ft of proposed
impervious area. Total built-upon area for earl, lot In this conu„erciol site is 80%, which
constitutes a high density developi loll t.
91tE17�r�r�p�loy
5ee flan.
4dJacen�p�rty
Land use in the vicinity Is comrnerclal and residential. The land irnmedlately to the north
Ire undeveloped. To the east, and west is developed commercial.
1'lalnlad_�s1on anr�_5�dimeni�atian.C9ttl;eoLP�aotices
A temporary gravel construction entrance/exit will be installed at the southwest project
entrance. During wet weather it Play be necessary to wash vehicle tires at this location.
IIle entrance will be graded co that runoff water will be directed away from proposed
roadway.
As soon as final grade Is reached on the proposed roadway, the eubgrade will be
stabilized with a 6-inch course of NG DOT standard slze AM otone to pevont erosion
and dust during the construction prior to paving.
Slopes will be lightly roughened by disking Just prior to vegetating. Surface stabilization
will be accornpliohed with vegetation and mulch as specified In the vegetation plan.
Roadway base courses will be installed as cool, as fh,ished grade Is reached. Dust
control le not expected to be a probien, due to the sr,rall area of exposure. 51101,11d
excessive dust be generated, it will be controlled by sprinkling with water.
-3-
CON571LICTION 5CHEDULE
Obtain plan approval and other applicable permlts.
Flag the work limit6.
Hold preconstruction conference at least on week prior to starting construcUort.
Install temporary gravel construction entrance/exit.
Install terporary sedlrnent bash.
Install storm dram with inlet protection at construction entrance/exit.
Vegetate disturbed areas.
Complete site clearing. Haul off and depose of properly,
Rough grade site, construct swales, install culverts and outlet protection, and install
sediment fence as needed.
Complete final grading for roadway and otabllize with gravel.
Complete final grading of grounds, topsoil critical areas, and permanently vegetate,
Iandocape; and mulch.
All eroslon and sediment control practices will be inspected weekly and after rainfall
events. Needed repairs will be made immediately,
After site is stabilized, remove all temporary measures and install permanent vegetation
on the disturbed areas.
Lstlinated time before final stabilizatlon - 9 months.
.q.
MAINTENANCE PLAN
All erosion and sediment control practices will be checked for stability and operation
following every runoff-producing rainfall but in no care leee than once every week. Any
needed repairs will be made iuunediately to maintain all practicer ar,deoigned.
Sediment will be. removed from beliind the sediment fence when It becorrrer about 0.5 ft
deep at the fence. The redimcnt fence will be repaired ar neceroary to maintain a
barrier.
All rceded areas will be, fertilized, reseeded ar necerrary and mulched according to
epecificationr in the vegetative plan to maintain a vigorous, dense vegetative cover.
t
i.
-5-
6.06 -CEmropAKY GZAVEL GON9Ttzucrm rm ANct/EXIT
VENNITION A graveled area or pad located at pohtts where vehicles enter and leave a construction site.
r Upf 05E To provide a buffer area where vehicles can drop their ntud and eedImueut to avoid transporting it
onto public roads,to conta,ol croolon 6om outface runoff,and to help control dust.
CONPHION5 WHERE
PKACI ICE APPLIES Wherever traffic will be loaving a construction site and moving directly onto a public road or other
paved off site area. Cortsbtictlon plans should Ilntlt traffic to properly constructed entrances.
1)E510N CKII EKIA Aggregate Size-Use 2-3lrtch washed stone.
Ulmerislons of gravel pad
Thickness: 61nch nrihimuht
Width: 12-ft nrhtimum or full width at all points on the vehicular entrance and exit Area,
whichever is greater
Length: 50-ft Inlrtlrtrmtt
Local:lon - Locate construction entranece and exists to Ihuit eedhnent from Icavhtg the site and
to provide for ritaxllrturtt utllll>y by all construction vehicles. Avoid steep grades and entrances at
curves hl public roads.
Washing- If conditions at the sits arc such that most of the mud and sedluteut are not rentoved
by vehicles travellug over the gravel,the then should be washed. Washing should be dome on an
area stabillzed with cruelied stone that draine hits a sediment trap or oGrcr suitable disposal
area. A wash rack may also be used to make waehiug more convenient and effective.
CON51 KUGTION
51'ECIFICATI0Id5 1. Clear the entrance and exit area of all vegetatlori,roote,and others objectionable matedal
and properly grade It.
2. Place gravel to the specific grade and dimensions shown on the plans,and smooth It.
3. Pi wide dralnage to carry water to a sediment trap or other sultable outlet.
• 4. Use 360t6xtII0 fabrics because they improve stabillty of the fenridat1011 ht Iocatione subJect
to seepage or high water table.
MAIN IENANCE Maintain the gravel pad hl a condition to prevent tnud or sediment front leaving the conetructloN
site.. this may require periodic t:opdressing with 2-Inch Atone. After each rainfall, Inspect any
structure used to trap eccilment slid clean it out no neceseary. huutediately remove all
object lonable materials spilled,washed,or tracked onto public roadways.
i'
r
G.10 'ItM'ORAPY 55EPING
PEI 111111011 Platttng rapid-growing annual 0066ee,email gralns,or legumes to provide 1:[I d, temporary cover
for eroolon control on dleturbed Arcne.
M;T0.5G 'To tenlpot-alily etablllze denuded areae that will not be brought to MAI o;;-le for A period of more
that 30 Working dAyor
Temporary oeedhtg controle runoff alid eroolon until permanent vegctattott• r other eroolon control
rncaeurce can be e6tabll6hed. In addition, it providee residue for Boil 1: :�ccfion and seedbed
preparation and reducee probleme of mud and duet production front I-A:,! Coll rmfaceo during
consti ucNon.
C0IJI)I1101,15 WI IERE
PRACIICI°APPLIES on Ally cleared,unvegetated,or epaloefy vegetated Boll surface where vcyctalive cover le needed
for Icss than 1 year. Application of this practice Include divelolono, daunt, 1=nr1,01any oedinent
baehto,temporary road banke,and topeoll etockplleo,
PI At IIIING
C0IJSIDEP.ATI0N5 AnnuM plants, wiriclt oprout, and grow rapidly and survive for only one or:fen, fire suitable for
cetabli6ltiug InlClal or temporary vegetAtive cove'. Temporary seedily p;rorrver I.lie Integrity of
eat t hru rediment control rtructuree such AA dikes, diverolono, and i br bank, of dAme And
•:rliumnt basito. IL can Aioo r'ed,ee tire amount of maintenance nosrclaferl wIl 1, there devicco.
I or example. I:hc flequetcy of sediment barter dcanouts will be reduced if will nulled Areas,outside
the active conetructJon zone,are stabilized.
Proper• seedbed prepAtAClon, selection of appropriate epeclee, and use rf quality seed are A9
Important In two practice as In Practice 6.11, Petrlanent 5ee611110. Faroe fo follow established
gul,lcllnce and reconmtendatleny carefully may result in an Inadequate or short-lived etand of
vegetation that will not comb of erosion.
Temporary scediug provides protection for, no more than I year, dnedb,g rAIIC!l tlitte permanent
6t0171117AUOIJ 611ould be 11110ated-
° SPECIIICAlIONS Complete gradiug before preparing eeedbedo and Install All hecessAry cios!on coutrnl practicee,
such A6 dikeo, waterwayo and 12A61ns. Milindze steep slopes becmi,c t.hry ncnke seedbed
preparation difficult and hareaoe file eroolon hAzard. If eolle become Colin arl rd daring grAding,
looeert then.W a depth of 6-8 nchee using A ripper,harrow,or cltleel p;oc+.
5EEU13EU PREPARATION
Good seedbed pr'cparatlon ie eesamt,Al to oucceseful plant eetabliofnurnc. A grad Acedbed Ie well
pulvrrized,loose,and mnifonu. Whoa hydrooeeding nlethode are used,f he 6mfaw may be IcfC with
A more h-regular surface of large clods and stones,
IJMING- Apply little according to soli teat recontmerdationo. If the. pi 1 (,�Gldlly) of tine coil to not
known,an application of ground aydcultural Iinncotone at the rate of i t 0 11/, Ions/acre on coar'se-
tcxl;urcd Auto and 2-3 touo/acre on fine textured soils Is usually 6Lim,,,en,. Apply limestone
uniformity and incorporate Into the top 4-6 htchca of eoil. 50110 with a pl I of 6 or higher need not
be,filled.
PERTILIZER-6aee appllcaUori rate6 on loll taste. When theee Are nrl:pcsoibic,Apply a 10-10-10
grAde fertilizer at 700-1,000 Ib/acre. Both fertilizer and Ihne should be incorporated Into the top
4-6 htchce of Boll. If a hydrAulic seeder to ueed, do not mix aced A'..l fertilizer more than 30
utlnutco before AppllcatIon.
SUP.PAC.E ROUGHENING-If reoettt t111a0e opeawotls have reoufted it a loose outface,Additional
I ughening ttlay not be requhed except to break up fArge cfode. If lAittrail cauoce file surface to
become sealed or cruoted, loosen it just prior to eeedilg by dleking, r,al lu,l. hallowing, or' other
oultablC tttethods. Groove or furrow elopes steeper that 3:1 on tile contour I"rate oeediug
PLANEort-mIoN '
i SelreC an , pr'opdAte opeciea or epcdcs mixture ftom 'Able 6.10A, far 6ccding In late winter And
car ly o! 7.Table 6.10b for summer,And Table 6.i0c far fell,
6,��f" •''� itWOKAKY 9LUDING ,•i.i j,'i'(L r,cq lal..t'11 6.10.dos-P-1
:, SEEDING .'r t ,,;,
Evenly apply seed using a cyclone seeder (broadcast), drill, cultlpacker seeder, or hydrooeeder.
Use seeding rates given In Tables 6.109-6.100. Broadcast seeding and hydioseedIng are
Appropriate for steep slopes where- equipment cannot be driven. I land broadcasting Is not
reconunended because of the difficulty Inn achlev 110 a uniform dletrlbutlon.
Stttall grains should be planted Ito more titan 1 Inch deep,and grasses and legunlcs no more than Vz
Itch. Broadcast seed "lust be covered by raking or chain dragghig,and them lightly finned with a
roller .or cultlpacker. Hydrooeeded ndxtmes ohould include A wood fiber(cellulose)mulch.
MULCHING
Thd use of appropriate inulch will help mnsuro eetabllshrnent under ttorillal conditions and le
essential to seeding success wider harsh site condltlone (practice 6.14, Mulcldng). Hareh site
condidolis include:
+ seeding ut fall for winter cover(wood fiber mulcliee are not considered adequate for this
Use),
+ 'slopeA steeper than 31,
►'"r'� cdbAlvely hot of dry weather! •'<'
+'' 'aJVe'rbd sollA(bltallow pocky'dr hlgh Ill clay or eald),and
' +" 'areas rebdlvlNg concentrated i1ow,' �, `
If the area to be mulched Ie subject to concentrated water-flow,as Ill channels,anchor mulch with
nettiq(practice 6,14,Mulching).
MAINTENANCE - Keeeed and Ittulch•Aread whbre deeding emergenea Is poor, or where erosion occure, as soon me
poAelbld. Uo not mom protect from trafilc as much as possible.
TABLE 6.10A TEMpOKARY SEEDING RECOMMENDATIONS FOR LATE NNIER and EARLY OVKING
5EEDINGMIXfURE
Specled Kato(Ib/acre)
,, °i AnnUAt lespeddza
omit annual Ie6pedezA when duratlon of tennporary covel•IA not is dxtend beyond June.
5EEDING DA1 E5
did i J Ape 15 r,
w::_ S.'>t SI:'!1P `•..,.ia;..11l r.11 .9`1 ! l',h )•.' I .i� : i r
501L AMENDMENTO"°"
Follow recomuitendallons of 0011 tests or apply 2,000 lb/acid ground agricultural Ilmeatone and
750 Ib/acre 10 10 10 tertlllzar,
;MULCH
4,000 Iblacte sbtaw Anchor by tacking with Aephalt, n rettJug,o a utulch anchoring
Apply
tool. A diok with blades Oct nearly straight call be used as a rhulclt anchoring tool.
MAINTENANCE
" I�etertlhfe If growth(16•ftot fully,adequate. reseed, refertlllze and mulch Immediately following
eroslon or other damage.`
iA13Lt6�0b t '` " rrTEMpOKAKyrpEDIN(5RECdMME'Nt)ATI0N5FOKSUMMER
i n •,air I !f:''+11#lit -tY;da Oa -11.M',.Y11lJm�. a.I,S ri , � r`"
ij , ar •:;;, {!''J.P,'&E blNG MlxtUKES
it .-#. :; r -1 n:aprr} t01nr dcl a ;5, '�e r
5 e6 '" Kali(Ib/acro)
Gentian millet 40
SEEDING,DATES
6.1d TEMPORAkY SEEDING e,io.ae�-a
501L AMENDMENf9
Fallow reconuneltdatione of eoli tcste or apply 2,000 Ib/acre ground agricultural Ihneetone and
750 lb/acre 10-10-10 fort llzer.
MULGFI
Apply 4.000 lb/acre otraw. Anchor straw by tacking with asphalt, nebting,or a mulch anchoring
tool. A disk with bladee Oct licit ly Ott Aight can be weed ae a mulch anchoring tool.
MAINIENANGE
Refcrtllize If growth Is not fully adequate. Reeeed, rCICr'tIIIW and mulch Immedlatcly following
erooion or other damage.
TADLk 0.10c 1 EMf ORARy SEEDING kLcoMMENDArION5 FOR FALL
SEEDING MIXTURE
5peclee Rate(Ib/acre)
Rye(grahl) 120
SEEDING DA-IE5
Aug.15•Dec.W
501L AMENUMENI6
Follow itcomwendatlone of toll testa or apply 2,000 Iblacre ground Ad''cultural Iitlteetone and
1,00o lb/acre 10-10-10 ferNllza.
MULGI-I
Apply 4,000 Iblacre etraw. Anchor oteaw by tacking with aophalt, netting,or a mulch anchoring
tool. A dlek with biadee act nearly otralght can be used ae a mulch anchoring tool
MAINIENANGE
Repair and tefettlllze damaged areas hnmedlately. Topdrese wall 50 Ib/acre of ttitrogert In March.
If It le neccosaty to Mend teniporaiy cover bcyoud Jmte 15,overeeed with 5o Ib/aa'c Kobe In late
Februaiyor CAI lyMaroil.
i
6.11 pCKMANENT SEr-bI No ,
6.lLAod-I-
ii '.., •:.. .. .-••, it i'•I ; :.. '
UI'rINIIION Controlling runoff And eroolod on dlotmbed areasby ertabllrhhig Perennialvm -
alive cover
with
rUfJ'OSI- To redticel eroelon and decleaee oedhteut yield froth dleturbed Arcae.And to civiAurntly otablilze
Ouch Al ea6 Ill A manner that. le ecotornical,Adapte to Slte condlNono and allom5 eclection of the
most Approprlate plant materials.
CoNDInoNS WHEKP
fI'.ACIICI°AF'rLIES 1'Ine-graded Arcae on which permanent, long-Ilved vegetative cover le the mi-MM, practical or Incet
ereckive urethod of otabilizmg tire, poll. rernnanent seeding may also be urrd on rountrgraded
areas that will not be brought to final grade for a year or more.
Arcae to be etabillwa With permanent vegetatlon muet be seeded or planted tall hill 30 miking
days or 120 calendar Jaya after•final grade A reached,hiller temporary,stabilhal lot)i,applied.
HANNING
C01151DEr.A-11ON5 Vegetation controls eroolon by protecting bAre coil outfaced front raindrop Iuitoct And by reducing
the velocity and volurrle of overloud flow.
The moot conutiot And econontical insane of otablizing dleturbed ratio le In•"".ding giaeoce and
Icgwnce. 1lie Advantager of oeeding over other nteano of edtablielihrg p1Ani s Include the omaller
Initial coot, lower labor Input:, And greater flexibility of method. The of reeding
Include:
A -potential for etoolod during the establlohmcnt Otago,
6 ` the need to reeeed AreAe thAt fall to eetoblleh•'
oesoonal Ilmitallote oll eultable•coming dated;and
• a heed for water and appropriate ternperatur'ea during gemination and e.a,'.y growth.
The probability or ruceeooful plant cstabllahment CA" be H1ARIntlzed thrnu;li 60M plAmting,
knowledge or Lire coil charactedetice (Table 6.11a), Selection of OuliAble plrrri; materiale for the
elte, good Seedbed preparation, adequate liming and fertilization, and lhncly planting and
ntalntcnancc.
S�LLcfWGfLANiti•1Att:fflALS ' s ,: ';,.. .,.:_....,...;,., •'
Climate, Tolle, And topography Are the major factors affecting the ruitAtllity of pinutc for a
Val Hculnr alto. All three of theee factora vary widely scr000 North Carolina.
To rhnplll'y,plant oclectloo, A key to ferrilAttent Seedidg M&tmn•e 16 preornted In table 6.111b. 70
find rceding rpecifica lono for A Opedflc rite, follow thl6 key through the d'ffcrent oteps to the
ApproprlAl:e oeeding number. 6cedhrg tAixtm•er recommended here are drrrgned for grrieral use
and arc well provers Ill Iactcal new oltuationo. They are denoted to I•reduce rhaxOnunl
6tabillzatlort and minimize tile Anlomlt of maintenance and repair required. ;
LAND Usk le A pthnary conrlderANon In planning permanent seedinge• for thin 1,111p06c land ure,
whether reeldchUal, Induetrial, commercial, or recreational, can be dlvidrd Into two general
cAtegorico:
6 lilglr-IIIAlOtchAnce areas are mowed frequently, Mined and fertlltzed rea�darly, and either (1)
recclvc Intense tied(e.g.,athletic nelde)or(2)require tttaintenmrce to an n.-rthrtic standard
Ionic IAwho). Cnaoeee need for treat,eltuAtione Are long-lived I'^r rrnialo that form A
Clght coal and are fine-leaved And Attractive In Appearance. they moot bn well adapted to the
geographlo area where they are planted and able to endure the ot.tro= of frequent mowing.
Sites where hlglrmaintenance vegetative cover le deoir-able Include howrs, luclurtrlal Parke,
oclwole,churches,and recreational areao.
• ' low-lnalachance Arcae are hived Inflroquentiy or hot at all, And do not receive little and
frrtllizrr•on A regulAr bASIO. PIAiite hunt petalot with little rhaOntenam:r over long perlode of
time. Grace and legume mlxturee are favored for these elteo becauoc togumce are a source
Of soil nitrogen. Mb<ed standa are alOo more realotant to ad con,'itlone. SILo suitable
I
6,iin> • a. ,` ,p�I�M1�NCNi'f;��bINC�, .,.. . ; ',i+! it ;: , 11 1
•�' for low-ItlahiteflAfloE,VbgatatloN INclude�steep slopes, etrEAm or d!annol bmiks, solve
'1... ,a, Oil'p,00hlttlerclAI propEttled,Ark(°UUIIty`tbi'f Anse such As,roadbanks.
ShhUtt�b plzhpAt2A7lON
J r`•. �thkooll'a t dleturbeda�Iteldtdst betkmended td pVovlda an optlmuut cnviromitent for deed
gehithtatlort and IiAaoe soli fnuAt bd loose enough for water Inflltratlori and
root penetration.` the;pl I (Acidity.or alkAllnity) of thii,tloll must be ouch thAt le not tmdc And
nutrients Are AvAllabie.a preferably between 5A And 5.5.. 5ufncient tiutrient.o-Added Ao rottliker
must be present
, I• + , ! r. ..l '.,.1 ,,_�. 'yt alrA I!;.v IF i ,,, < .i,, . ..
It Is Ae Important to kdd htttb'ao'ta Add.fertlllzer Llnte Is used prllnalily As A Ili ; or acidity,
Ni!kilher;but Is also 6uppllba,dAlelurii AIW.ntague6luntr ivhieh are hnportant: plant. Hurl louts, 6y
hlcreAelltg ooil pN It also In W other Nutrients more avAllable to plants, At the oAilid tune, It
-' "prevetttd Alulhlnuilt toidclGy'bydecreaeing the solubllity of soli Atuulimnn. MAny rolls ht Noith
"Carolina are high In Alinnhium,vhtich Stunts plant growth.
After used Is ht piAce,it mU"bd protacted with a mulch to hold moisture And mcdlfy temperature
J. "axtrehido,wlNle prevmithlg troslon dudug seeding eetAbllelnttmtt.
5tLPV 5LOpL5
Tlie operAtloa of ealulpNleht Is I-atrlcted on eldpo steeper than 31, sevmrly Iluul mg the quality of
the odedbed thAt cart bd prepared.,i he soli cAnrtot be sufficlently worked,And Au!eudnlents cannot
be thoroughly lrtcorporAW a,
provlolons for eetdbllslnNdnt of vegetAtlon on steep slopes "All be 111Ade duNng final gradhig. In
constr ucWat of slopeo,for bxaNlple,the last 4_0 INchZ�!nlght be loft micolupActed. A loose,
augh ocedbed to eostnGALlt Large Mods,ANd otoned piovide Irregularities that hold seeds and
fin tlllzer, cut alopeo ehould be roughened,
i=tM1.ripf, f
Where oteeptees pr'ohlbtt6 the bed of fArrrt niActilnety,66MItig metirods Aid lilnited to brroadcast
or,hydrdseeding,WItI1at/dYdodedlhg glylNg!t�a moot dependable teoultd. Vegetation chosen for
these slopeo.muot NaCrl'EdylYdINowing or:_other. Iritarelve htdhitQNAttce. Using A hydraulic seeder,
Geed,fertllizm',weal AbEr,tltulcit,and A tacking aged t cart be Applied In dne of•erANoli.
Good Inulching prActioEd Alb Critical to protect AgAltlst 6 omort on ut oexrlloce. oY syhtheto
oYAAw, anchor whit hettltig oraopholt;fln olope9 steeperthan V;J
!;... ,htatting m� be rcqulrtd to protect♦=hd 61010e:i
1SICy�:%h,nt aNi::
5phCIFICAt10N9 5hhvf3pb fttQUIIt�M Nth
hdtabllehhtent, >PeVegd tlolt ohould [tot be Attertiptet( oil oltes that A!e unoultable due to
IrtapptApiiAte ooll texture(Table.6.11a),poor drolnAgE;ooHoenp'ated overland flow,or steepness of
elope until Itleasutee have beers Caked td corl ect shoos prbblEmo ,
4'.a• i .1" .,,•, ,- .,,:el �!M;i%;fr r.,. .irk t o e
;., To rnalntAht A good stalls of Ve cEAtlon,tits moll rhUs�Webb cartahi nihihnum tcquh'em�nte ae A
growth ruedium. The trJstln 1 6011s sl out Rave tlleoe oHteflA
• , prlough Ave-grAllit (oilt'And cloys hi Hill to fhAlhtAIN aAequatd mo00il). and nuGient
• oupply (AVAIIAble ltatdv oil'61ty of At Ie2ot o5Inc11eA water to 1 hich of Doll).
• 5ufflclent paid oplcb t0 pdYhtit root pehetrAtioh
,..,, ,�.,,,,,• ::,,••+,<,Cufficicht"depth r�f dolt tE pPGvldaf An addqqudto root lone. Tito depth to rock or Impermeable
;.;•. "iayero such 6p hArdpatlr'.riliould be(21Nchb0 or Nord;ucept on elopes steeper than 2-A where
the addition oe edl Id Itdt fedsibldr t.
• 'i'A fAvorable,pH radge foh Alit' growth UbuAl(y t30 �5,
•i• Yreedont froth IArgb;F yotA,d>ranohed,stones,IArgd clbde a earth,or t rach of Any kit d. Clods
slid stones OIAy bd le(t ef]elepeo 0bdepor'tItah '�)f they Ard to be hyd,Wraded.
If Any of the above criteria and Not INet Le. it the exleting soil to too coated,dolled,shallow or
ADldie to foeter,vegetatlbn 6pedal amerdriientd are fe{ulred. the ootl condiNonero descNbed
below ItAy 66 beitehcial Dh preferably tbpooil thAyv be Applied
p , u ; „' ,
1
PEPMANENT SEP-DING 6.iAAoo•9-
0011-CONDITIONERS--ry
In order to Inipi we the otrueture or drahrago charactedrticr of a roll,tlic roiloIt in9 writ ri IMr stay
be added. there anteudmentr should only be neceooary where soils have timitntluun ;hat nake
them poor far plant growth or for Ilrie turf ertablirhment.
PEAT -Appropriate typee Are rpliagnmU mors peat,hypnurn moos peat,ro<.!-o,, In peat,or peat
humuo, all from ficolrwater rourceo. peat 6hould be shredded and condii ,gild ;n 6torage pilc6
for'At leant 0 ntonthe After excavation.
i 5AND.clean and free of toxic waterlAls.
- VEPMICULITE It horticultuPAl grAde and free of toxic eub6tarlee9.
P011ED MANUPE . otable or catl:le manure not contalulng undue Am"nnn.n of 6tr'AW OI' Other'
bedding niateriale.
1f lOPOUG1ILY PO rfEt)5AWDU5T-free ar etonee And debris. Add 0 Ib,of 1111 When to each cubic
yard.
5LUDGE - Trcated sewAge And InduOtrlAl sludgee are Available In varlocr h'rut6;there 6hould be
used only In accordance with local,%Atc,And federal regulallona.
5PECIE55ELMION '
Urc the Aey to Perrnaneut 5ceding MlxCm eA (fable 6.11b)to select the:u r l app101111.IW Oecdhrg
ndxturc bA6ed on the genm'AI rite and nraint"Ance factore.
5EED6ED PPEPAPATION
Inrt:all neceorary mechanical crorlon and sedimentation control practice' I:'efaie oeeditg, and
complete grading according to the approved plan.
LIME AND rEP.TILIZEP needy 6hould be detcrmined by roll torte. soil tcrd-io,, ie perrornwd free of
charge by the North CarollBa Department of Agriculture eo11 toting laboral:oiy. Direcl'Jona,
6aiupie cartons, and Information oheets are available through comity A:jticultural Extension
offices or from NCDA. Dcc.Auso the NCDA ooll teaNng IAb Yequhcr 1-0 iwclr for 6ample turu-
aromid, eampling umst be planned well hr advance or final grading. 10CH110 it also done by
counuerclallaboratoilev:--�
MICA roll tc6to are not Available,follow ratee ruggerted on the IndMdual olvdfc.alion eliect for
eccallig mtlx chosen. Application rater usually fall Into the following rangeo:
• Ground agricultural Iirncotouc:
Light-textured,randy 601161 1-1 VP tour/acre
I IJAvy-texturedl clayey sotto 2.3 tone/acre
• Fertilizers •.. ,
Gi a6reo:800-1200 Ib/acre of 10-10-10(or the equivalent)
Grace-legume mlxtUree:800-12001b/acre of 5-10-10(or the equlva4aU)
APPLY LIME AND rEP11LIZtP evenly and Incorporate into the top 4-6 1twhes or roil by diking or
outer rultable nteArr, Operate Machinery mt the contour. When uoing a hydrooecder,apply line
i and feltllizer to a rough;l000e surface.
°,� ' KougheNsurfacee,; r,,,
Complete oeedbed preparation by breaking up large clods and rakhr�, Inlu a 6mnoth, uniform
omface (elolma 1er6 than 3:1). rill hl or level depressions that can collect:wat..�r. l3roadcart seed
Into a iresldy loosened 6cedbed that Iran not been sealed by rainfall.
SEEDING
orrVING DATES given Inthe eeedirrg mixture opeclficAtlone are deolquatcrl , "bent" or
1.poroible". 5eedh166 properly canted out wiNlIn the "boot" dates IIA,'C A high probability of
succcer. It to also 1`06611"0 to hive satlrfactaiy e6tabli6hrttenl:when recdiog col tide these dates.
I-lowever,as you deviate from thrnt, the probability of failure hra caeca t apidly. !:'rl dhig on the last
6,11 rP-KMANENt5F-EbING h " I I'1" ' I r 6.7LAoc•4
date shown under"possible" Inay reduce chances of succeee by 30-50%. Always take this Into
account In ecl,eduling IAnd•dleturbhtg activltles.
USE CERTIFIED 5EEV for pentlanett seeding whenever possible. Certined seed Is I,spected by the
North Catalina Crop hoprovement Addoolation. It meete publiehed North Carolina Standard and
should bear an official"Certified Seed"label.
Labeling of non-certified deed le also required by law. Labels contain Important Information an
seed purity, germination, Arid presence of weeds. Do not accept deed conl.ahling "prohibited"
noxious weed deed.
INOCULATE LtGUME SEEI)with the"Rhlzoblua,"bacterlA appropriate to the speclee of fegmne.
Af pLY 5EED uniformly with a cyclone seeder, drop-type epreAder, drill, cultipacker eeeder, or
hydrooeeder on a find,friable seedbed.
WIIeh ueing A drill or'cult:IpAcker eeeder, plant small grAl,d no store Ulan i Inch deep, 01'A9eee and
legumes no atone than V2 Inch. rquipmeut ehouid be calibrated I,the field for the deeh-ed eecdhrg
rate.
When Uehtg broadcast-sassing Inel:hode,subdlvlde the waA h,to wonkabls sccGlond and detennlue
tine autount of eaed needed far each oecllon. Apply one-half the seed while moving back and forth
across the an ea,making a uniform patt,111;tiler,apply the second half In the same way,but nicAng
At light angleo to the flrat page.
Cover broadcaot aced by raking or chain dragging;then Ilia the surface with A roller or cultipacker
to provide good aced contact.
MULCI I all plantinge Imiftedlately after seeding.
" .. NYDR05EEDING
3Urface roughening Is particularly Important when hydroseeding, as A roughened slop will prwlde
aortic natural coverage for Ilene• fertilizer', and "eel. The surface should not ba compacted or
smooth. Fine seedbed preparation le not neceoeary for hydroeeeding opeiaclons; large clods,
Atoned,And hregulaNUes provide cavltlee In which seede can lodge.
Rate or wood fiber(cellulose)application should be at least$000 Wacre.
Apply legume hnoculante At four times the reconunended rate when adding Inoculant to a
hydroeeeder slurry.
If tnachlrteny breakdown bf I4 to 2 hourm occurs, add 50% tnor•e eeed to the tank, based on tine
proportion of the sIUHy ientAln6ng. This should compensate for damage to oecd. f3eyond 2 hours,
a full late of new deed utay be necessary.
Little Is not normally applied with A hydraulic seeder becauee It is abradlve. It can be blown onto
steep eloped IL dry Forst.
r„
Hybrid tiernnudAgrase cannot be grown front eeed and fnudt be planted vegetatively. Vegetative
methods or eetabliehoig common arms hybrid l3ennudagraes, centlpedegraod, and r3alrlagraee
include sodding,plugging and sprigging. 5pringe are fragments of horizontal olxnls,which Include
At least one role Uohnt). They are normally sold Iy the buehel and car, clt:her be broadcaot or
piantad In furrows using a Uactor-drawn tobacco or vegetable Uansplanter.
FURROWS should be 4-0 Imchda deep Arid 2 ft apart, Place opringo About 2 ft apart hi the row
with one end at or above ground level.
13ROADCA5T epdngd at'tlne specried rater press Into the top Vz-2 Inches of soil with a
cultipacker or with a disk set nearly etraighnt so that the sprigs Are not brought back to the
eurFace.
rr-RMANENT5EEbINO Li i I ' '+ '''t e.,aeo<-s•
IRRIGATION
Moleture la erocntial for oeed gelminablotl and seedling eetabllelnuent. Snpl Icumntal hrlgatlon
can be very helpful in arrurhlg adequate rtands In city eearoue or to epnnl devcloputent of full
cover. It le a requh'ettleut for title turf ce tabllehmalt and should be coed cl !<Miei e Linen feasible.
I lowee'er, Irdgatlon 10 rarely critical for' low-tuailnterlance vegetation plat It-,I At the appropriate
time of the.year.
Water appllcatlou rated court be carefully, conttVIled to prevent rultoff. Il,vilgvnle or exceerlve
alnounto of water can be More harmful than no oupplemental water.
MM I I i:NANGE Gcucrally,a rtand of vegetatlort cannot be detemilned to be fully establlehcd until evil cover hao
been maintained for one full yea••from planting. hlrpect oeeded areas for fAimc and make
ncceeoary ICpalra and ICoCedingo Mtllhl the ealle eeaeoll,If porelble.
RE5EEDING - If a stand hao hladequate cover, re-evaluate choice of pl;:nt unalcrimet and
quautltles of little and fertilizer'. Re-cetabileh the otand after oeedbed p ri—ir.daou or over-eced
the otand. Conolder occAug ttmporaly,amtual opedee If the titlle of year Is net--appropriate for
PC]manent oceding.
If vegetatlort falle t:o grow, roll moot be teoted to dcternlile If addlty or 1whicut Iulbalancea le
reapouolble.
rrPI II RATION-On the typical diaturbed rite,full crtabliahntcnt usually IC,lulrea rcfcrtllizatloll ht
the oecond growing aeaoou. Flue turf requlreo annual tnalnteuance fertillzal ion. Urc roll terto If
p000lble 01 follow tile guidellnee given for the specific oeedhtg mixture.
1AN-1-6.ita SUIrA81LIfYOF SOIL FORE5rADI-151-IMENrOrLOW-MAINIENANCEVEGI-rA?ION
Criteria Cut tabillly LImItlug Factore
Good Fair poor
p;I 5.6-7.8 4.6-5.5 <4.ri Too acid;p000lble At,Mu,re,t.^deity
Available water capacity' >.10 .05-.10 <.05 Too dry
1 exture, I,all,el, 001,old, rc,rlc,c Too high in clay
rl cl
le a Too high ht eand
C0111 ee(3-10 In) <15% 15-35 >35 Lg.5toneo reetict tllagc;dteughl-iy
C:agnlente°(AO III) < 3% 3-10 >10
Uepth to bedrock(In) 40 20-40 <20 Inoufficlent r'ooting depth
rl
5allnity(tultlhos/0111) 8-16 >16 Exccoe salt
TADLL=6.1lb KEY 10 FFPMANENr errPING MmIUM BASEb ON SITE 0IARACTERIS1 Ic;5
cosetal Man table
A. Well-to poorly-drahled calls with good water-holding capacities
1, Low ntalntertahce iGF p
2. I11011 Malnterlatice 2Cr q
D. Well-draluesl OAHdy lotjitte to cxceaelvelywell-dralrted eando
1. High malntbtialtce,fine turf LEI' r
2. Low-to Hiedluld-care lamle 4Cr 6
I In./ht.
P 5Audy clay loam(eel),allty clAy leant(old),cloy 10Arrn(d),eaedy IOam(ei),silt loam(ell),loamy sand(le),eandy clAy(ec),nil ty clay(etc),cloy
I,),rill,(01),eAnd(0),And 10Ant(I)
Percent Fy weleht
6.11 MKMANENT 5ELDING ! ', e.n.ao�•e-
3. Low malntdNAnce - LIM t
C., Intertidal toned d Mituarine shorelines,dredged material,
I ' Add graded NPda@'In salt water ', cl° u
Pi :II Grada•Ilnedch@Nhdld `r , " 1U, v
L. •,. .1 ICI'p:llrl.' .IL,L.I �i I ",.111.f I : •.i ' ._. : ..
...:1 1.., .I I' `. rlro{ llglrl''ut}f•�.' I: n.: : 1 1 I UI-i. 'I,::'. , -:.Li.'.:r;-,..o-.i .. '. ... „ �•
� y,' „ 1,...11 i �'l. l. lil.:.•1... I,I, r .,I .�I .
,Htl
iNs'''l1,Rn'.y,y_. . Ir •h J,�9'�'n0 r{1 Iyr..,al�.:;:.1 1.' �. `
G.11 rr_RMANEMI.5EEbING 6.1Lecc;7-
1ADI-F 6.11p SEEDING No.ice .
SEEDING MIXTURE
5peciee Kate(It/acre)
Tall feecue 130
reneacola Bahlagraer 50
5erlcla leopedez-4 30
Kobrlegpedezri 10
SEEPING NOT-ES
I. From Sept.i•Mal.,1,use uflrcarifled eericea read.
2. Ort poorly dralned alter omit relicts and hicreare Kobe to 301b/acre.
3. Whore a neat appearance It,deoir'ed,Guilt eericea arid Increaoe Krim 1. 40 Ib/aca e.
NUK51-I'LANTS
between Apr.15 and Aug.16,add 101b/acre German Millet or 1516/acre 6udnn rnoe. I'dor to May
i or alter Aug.15,add 25 Ib/aa a iyc(grater).
SEEPING PAT E5
BEST r0551N.1'
Eatiy opting: f`eb 15-Mar 20 Feb 15- ^;•r 20
Fall: 5c171;1-Sept 30 5ept 1 -Oct ..'I
501L AMENVMENTS
Apply Ilnte and for according to ooil toots,or apply 3,000-5,000 Ib/ace ground agricultural
littler toile(ure the lower rate on randy roilr)and 1,000 Ib/acre 10.10-10 fc11; ;b rr.
MULCT I
Apply 4,000 Ib/acre gratet rtraw or equivalent cover of another rultablc nuilch. .Andior etraw by
tacking with aepllalt, nettluo, or roving or by crlmphlg with a nmiclt anchoiiuy tool. A Aiok with
bladed Oct nearly rhaight can be need ar a nwlch anchoring tool.
MAINTENANCE
IF growth 10 lore than fully adequate, refortilize in the recond year, according to roil torte or
i opdreao with 500 Ib/acre 10-10-10 fertilizer. Mow or flooded wlteu 601icea 75 omi:red frolu the
nlixtme. Kerced,fertilize and mmlch damaged areas imntedlately.
7ALLI3 6.11r1 5EEVING No.2cr
SEEDING MIXTURE
5pecice Kate(Ib/acre)
Tall feecue(blend of
2 or 3 Improved varletler) 200
Rye(grahl) 25
1/
5EEVING PA7E5
Bert: Sept 16.Oct 15
rrealble: Sept 1 -Oct 31 or Feb 15-Apr 30
501L AMENPMENf5
Apply Hard and fertilizer•accordhtI to roll torte,or apply 3,000-5,000 Ib/acre ground agrirultural
Ilntertonc(free the lower rate on randy roils)and 1,000 blace 10-10-10 fort llizer.
MULCIi
Apply 4,000 Ib/acre email tftraw Of'ec(ulvalent corer of another eultable mulch. Anchor rb'aw fy
tockhtg with aaphait, netting,or 1Ming or by crhuphig with a mulch anchor.1111 tool. A dirk with
bladee Oct noady etralght can be ured ar,a ntulch anchoring tool.
MAINTENANCE
Fertilize according to roil torte or apply 40 lb/acre nitrogen In Jan.or Feb.,40 Ib In and 40
II)In Tim, from a 12-4-5,16-4-13,or oinlilar turf fertilizer. Avoid for Ali1llr;all0n during wall11
weal her, ae title inaeaoce Stand lorree to 6115eare. Kereed, fertI1iZC and rnddl damaged areal
humcAntoly. Mow to a height of 2.3-3.5 hlcheo ar needed.
6AI PERMANEN'("BEWHO
TADLE 6.* SEEDING No.3Cp
5EEUING MIXfIJkE
5pecleo Kate(bu/1,000 ft2)
tlfway or Iirway II Mlnlrnum: 3
hybrld Demiudaerass Rapid coven 10
5EEUING NOTES
I. 5prlg or rod. Moisture la eeaenLlal during Inidal ertablishrnent. Sod must be kept well
watered for 2.3 weeko,but can be planted earlier or later than sprigs.
2. Common 13crnmda can be seeded or oprigged but does❑ot produu:A hlglrquaiity Lw F. It Is
also less cold tolerant tliau die hybricir, more weed prone, and A pcoi; in flower bedr and
opeclutett planthig.
5EEUING PATES
Apr-July
5011-AMENUMEN1`9 '
Apply Ihne and fertilizer accordhig to coil l:cetr, or apply 3,000 Iblace greund agricultural little-
stone, Aud 500 Ib/acre 10-10-10 fea Lilizer, or 50 b/Aae nitrogen riom I urr-I:ype plow,-te1CA60
fcrtillzrr. Md la�0 Ib/erne nilaogen At L- to 3-wcek Intervale through midruuuuer.
51'KIGGING
r lant opligr in fmrowo with a tractor-drawn transplanter,or broadcast by hand.
pUKKOW5 sl;ould be 4-8lncltes deep arrd 2 ft apart. Place sprigs about 2 ft al!ait In tl;e row with
Otte end At or above ground level. -
13K0AUCA5f at rates shown above, aril pi coo aprige Into the top Vz-2 Iticlwo of eoll with a disk
set sbalgld:oo drat apt Igo ale not brought back toward the surface.
MULCH
Do not mulch.
- MAINTENANCE
Water as needed and MIOw to a/i-to 1 Inch height. Topdrero with 40 Ib/acre nitrogen In Apr.,50 lb
it May,50 It,ht Julie,301b In July,and 25-50 lb In Aug.
1AULE 15.1to 5LEDING No.4cP
SEEDING MIX(UKE
6pecleo
Cehtlpedegrass 10-201b/acre(oeed)or 33 bu/aci c(rprlgo)
SEEDING LW E5
Mar.-Jung
(5prlggin4 can be dolie through July Micro water Is available for Ittleatlou.)
6011.AMENDMENTS
4pply litho and fertilizer accordlog to roll terto,or apply 3001b/Aare 10-10-10.
91'KIGGIPIG r'
'pant opt Igo In furrows With A ti-Actor-drAwll transplanter,or broadcast by hand.
>&KOWS ohould be 4-0 Riches deep And 2 ft apart. Place opt Igo About 2 rt apart in the row With
bne end at or above ground level;
6.11 VEKMANENT 5LELANG " 6.11.Goe-9
13POADCA5T at tatee ohown above, and press optige Into the top 112-2 of toll MITI a disk
set stralghb sgthat sprigs are not brought back toward the surface.
MULCH
Dd Hob mulch.
MAINTENANCE
fertilize very spa,hngly-20 wacre ult:rogert it spring with no phosphorus. C<'ii 1pedrgraes cannot
tolerate I11011 PI or excess fertilizer.
IAGLL'3.11t SEEDING No.SCP
SEEDING MIXTUPE
5peclee Rate(Ib/acre)
Petleacola 13ahtagraee 50
5eNcla lespedeza 30
Common 6ennudagraes 10
German millet 10
SEEPING NOT EC
1. Where a neat appearance Is desired,onnit settees.
2. Use cououon Demludagraeo only on Isolated eltee where It onw, 1, beronre a post.
I3ennudagrare play be replaced with 5 IT;/acre centipedegrase.
SEEDING DATES
April i-July 15
501L AMENDMENTS
Apply lime and fertllmr according to sail tests, or apply 3,000 Ib/aae giowtd agricultural
1611col-one and GOD Weer 10-10-10 fertilizer.
MULCI I
Apply 4-.000 Wacre grain straw or equlvaient cover of another oultable nwkh. Am:hor straw by
Tacking with asphalt, netthlg, or roving or by crinhphle with a mulch anch,.;lug tool. A disk with
blades set nearly straight can bo used as a IIJUIo11 anchoring tool.
MAIN I"LNANCE
Krfer-tlllze leis following Apr.with 501b/acre nitrogen. Pcpeat,as growth requh-co. tray be mowed
only once a year. Where a neat appearance is desired,omit sericea and movr ao often ne needed.
h
'I AI'.LE O.Ilu 5LIHOING No.OCT`
5LEDING MIXTURE
5pecieo Planting Zone ;
Smooth cordgrase mean sea level to mean high water
5alfineadow cordgraee mean high water to average Ihigh water of storm
tldee
Giant coidgiass irregularly flooded area, who,o rolh tydoes not
exceed 10(ppt)
SPACING
PLANTING LWE5
April•June
SITE SUITA131I-ITY
Petodle flooding and dralnhtg Is necessary for good growth. hn North Carollo:%estuaries south of
Cali Lookout and areas riear Inlets wllec diurnal lunar tidee range 2 to 5 It inovirlc n relatively
wide hhterl--Idal zone for growth of ennooth cordgraee. Larger eotuarics no 11, of Cape Lookout,
whee waler level Is detemilned primarily by wind and freshwater runoff, pry=ids culy a narrow
Intel tdal zolm In which plauthhgs nhust be placed precisely according to cicval.i,•u.
ro.11 rLWANENT DEEDING 0.11.eoc-10
SOURCES OF PLANTS
Greenhouse-grown eeedlinge iney be obtained from conitnerclal rourcer, buL urually only be
contract, ordero. Plante may be dug from exlrbing eta[fde. Select planer from recently
eotabllohcd niavolie, with open oLando or niareh edger where Plante ate %looioun and the root
mat la not driloe. Digghrg and reparathtg le carlor. In laud. Dleposal areas for sandy, dredged
ulatcrialr often provide a good rource of p1911LO. Care should be taken to t1111111111Le damage to
oxleting InAreiicd.
Once planto arc dug, prevent them front dying by packing the roote In 111OWL Baud In buckete or
tube.
PLAN I[NO METHODS
Hand planting may be done by opctdilg hole, 4-6 htchee deep with A dibble or rho✓el, Inflerting a
ringle oteni,and packhig the Boil around it. Large,nrm area,[flay be planted With a tractor-drawn
la-anrplanter(tobacco or vegetable Cranrplanter).
FEMILIYATION
Little and foi Nllzer rltouid be Applied at rare9 reconmrended by a soli toot (ark for
recouuneudatlone for (escue). Without a roil test, apply 2 tour/acre lime, 100 lb/acre nitrogen
(pl cfal Ably A11 all-at11111011Iunl rouree),and 200 Ib/acie r O, rotArelunl in not r'egnlred. Fertilizer
rainy be broadcaOt and Incorporated before planting it the rite can be gtadrd and planted before
flooding occur,. 11oo,poste all Minetldnlentr Into the upper 4-0 hoe too of roil.
If the area to be planted If Hooded legularly,apply fertilizer below the Out at planting. 51ovr
r cienre 176 0117ela at e More effective oince tl ley rupply nitrogen over A longer poliod of tittle and can
Fe placed hi tlo planting hole will [!tile riek of dantaghtg tine rootr. If soluble (quick-releaae).
mates lair at e coed,cover with 2 Intl her,of Boil before Ineerthig plant. Orniocote (14-14-14-or 16-6-
12) IO an efferflve rdow-relcarc matclial that can be placer In the planting hole it the rate of 0.5
to 1.0 oz(2-4 teaepoone)per plant.
MAINTENANCE
Where plAntinge are expooed to wave action,replace plants that are washed out. In the recotld
and thhd glowing eea,ouO, brOAdcaOt nitrogen and P,oe at 150 Ib/aa-e oplit Into three equal
npplicationo ht April,June,and Allow, Alwayo apply fertlizer at low tide.
TADLI:0.11v SEEDING No.7q
SliEDING MIXTURE
Spooled rate(Ib/acre)
,,Olttiitoli f3ettnudegrarO 40-60(I-21b/I,OW ftZ
5EEDING DAIE5
April-July
C201L AMENDMENf5
Apply Ihne and fertilizer according to Boll torte, or apply 3.000 lb/Acre ground agricultural
IOnertoue and 500lb/acre 10-10-10 fertilizer.
MULCH
Ure Jute, excelsior luatting, or, other effective Channel lining material to cover the bottom of
channele and ditcher. Tile Ihdng 011ould extend Above the hlgheet caiculal:cd depth of now. On
channel Ode olcpce above thin Ilelglit, and it, drainagee not requlling temporary IhthlgO, apply
4,000 Ib/acre grain ata aw and arlcllol rt1.3w ly OtAplhlg rtetthlg over the top.
Mulch and ancholing niaterlele niurt not be allowed to werh down eloper where they can clog
drahlage dcvlceo.
MAINTENANCE
A mhiintuln of 3 "Coke to required for eetabliehment, hlrpect and repair nmlell frequently.
rerel tillze the following Apol with 50 lb/Acre nitrogen,
v.15 kit'KK/�C' e..r�.aoe-r-
PITINI I ION A layer of stone designed to protect atld stabilize Areas subject to or Orion.
ruerocir To 1n'olect the ooll out-race from erosive forces and/or Improve stability of soil rlcreo that are
rul Ject to occpage or have poor-soll structure.
CONPI FIONS WNEPE
I-PAGI ICE Art'LIES Rlpl'ap Is used for the following applications:
cub-and-fill olopes subject to seepage or Weathering, particularly what cnndnlone prohibit
crtal•Ilalinlerit of Vegctatlon,
• charnlel side olopes and bottoms,Inlets and outlets for culverts, bi dg,r,;lope dr'alne,grade
rtabillmdon otructuree.And stolid drains,
• otreanibank altd stream grades,
• rhorellnes subject to wave action,
rtnth dHO .
C0f IG'!'n:r.A1ION5 Pirrnr IA va oatlle,highly eroslou-reoirtml;Inatetial that cart be used effcclA III nlAuy locations
and III a vAliety of ways to eoubul a orlon on constructlolt Altos.
GPAPE0 VEP.5E5 UNIFORM WRAP
PlprAV Is clarrees ao either graded or unrotri. Graded riprap luciudes A w!dc mixture of Atone
sizes. Unifoiur riprap corselets of stones nearly all tho same elu.
Graded riprap Is preferred to uniform riprap In;lost applications because it forms A dense,fleRibie
cover. Ullfonm riprap Is Mere open and cannot MJurt as effectively to ntovenumt of the stones.
Graded 11pl;;p Is also clleapm to hl6tall requhhtg lees hand Work for inotalLtUor than Inlfornt
riprap, wllch ulurt be placed In a unifolul pattern. Uniform riprap play ,Ice A !Wore pleaeing
appcarauce.
I Piprap eizes are deolgnatcd by elthcr the area; diameter or the welghl: of the stones. Tire
dianleLcr rpecilication it often tllloleading since the stories are usually arigr'ar. I IAWeVer',common
prar,Lice is to rpedly rtone oize by the diameter of an equivalent size of-i:hcricsl stone. Table
6.15a ling come typical Atelier by weight,rphaical diameter,and the coi tcctAngular
dittrcriolous. lhcee Atone sizes are baoed upon an assumed specific welglu of 1,7'5 lb/ft.
A method commonly used for epecifying the range of otom elme In graded riprap is to deAignate a
diameter rot, Willett some percentage, by weight, will be Antaller. for exaugrie "d,,.," speciror a
Inixtuie of stonee III wilch fG of i-.he stone by welght would be 6nl;tller than the diameter
opcclned. Mort der tir are baocd oil d,,, or median elm stones.
Piprap and gravel are often dcoignatad ly N.G.0epar-tmatt of Tranoportatloo sl-edfcaClons.
TAf}I-El 6.16A 501 OF PIrw&ioNE9
welght(lb) Meati Spherical Length Rectangular
Plall eter(ft) (ft) lMdth/1-I01011t(ft)
50 0.8 1.4 0.5
10o •1.1 1.8 0.6
150 1.3 : 2.0 0.7
300 1.0• 2.6 - 0.9
500 1.9 3.0 1.0
' 1000 2.2 - 3.7 113 . ,
1500 2.0 4.7 1.5
Woo 2,8.` 5.4 1.8
'. 4000 3.6 .' 6.0 2.0
6000 4.0 to.9 2.3
8000 4.6 - 7.to 2.5
20000 6.1 10.0 3.3
Men conoldcrinq riprap for outface otablllzatlon, It Is Important to aullcipate visual intpacte,
mcludnlg weed control, ha-ards frmn snakes and other anlmalA,danger of elides and halar'dA to
I
0.16 RIPKAP 6.15.doc-2-
areae below otecp rlptap 61opee, damage and poeeibie elldee from eBlidren moving el.mtee, and
general 6afety.
proper 01017e 6CIeCt1011 and outface preparation are eaeenuAl for oucceerful long tct it, funetlonhtg
of riprap. Adequate compaction or fill area6 and proper use of filter blankets Ate neccsrary.
Sequence of Colto[,ructlon - 5chedtde dleturbance of areA9 that requhe rlpr011 110[,CC Mll 90 the
piacenlcnt of tiprAp can follow luunediately ofLer gradhtg. when riprap is lived for outlet
protectlon,place the rlprAlr beFor'e or ht conJull, ilou with the InotAllation of the rtt ucture eo that
It loin place before the first runoff event.
OF.51GN GFIiFFIA Gradation- Riprap 6hould be a well-graded mixture of 50% by weight target' than the epedfled
design eize. llm dlamel:er of the largcot atone Aize its ouch a mixture ch6uld be 1.5 HIMC the dw
6ize with 0111a11cr Aizes grading dowit to 1111011.
Tim dcoigneY Should detcrudnc tile tiprAp rize that will be Atable for deeigu conditlone. I-laving
delCl t1111led Llle de6lgn otoue oize,tl ie deeigner ohould eelect the oize or slzc6 that equal or exceed
that uthtlnunu 6ize bAACA An riprap Of mationo commercially Available I❑the Ai VA.
I Itickue-ae-Col strneNolt tcclmiquc0,a0uenotoue of the area to be protected,eize and gradation of
III e 111a np,ate frequency And aural loll of now,at fflculty And cost of utAlntenanrc•and consequence
of failue 6hould be considered wile,, det.enuhthtg the 1:hlckneee of riprap Ihtingo. Tilenththmm�
Lldckt:cee should be 1.5 tinme the maxiunn❑Atone dlameter,but hill no case Icer than Fi Indtee.
Quallty of Stone-5toue for•riprap MAY conelst of field Atone or quarry otoue. The Atone 6hould be
hard,angular,of ouch quality that It will not break down on expoeure to water or weathering,and
61111able lit All Other r'e,6peeLe for the rut,car.Intended. Tile opecific gravlty of the hrdivldual otone6.
ehould be At Ieaot 2.5.
51ze of 51,011e- lIm 017.ee of Atones uoed for riprap protection are determined by purpoee and
opeciflc We conditlone.
51ope Stabllizatlon- RlprAp otoue for elope 6tabllizatlon not Aubpot to flowing water or wave
action Altould be slzM for otabltity for the propoeed grade. The gradieut of the 61ope to be
atabilized 61Jould be lee6 than the natural angle of repose of the Atone rciected. Angle of
repose of riprap 6tone0 ntay be cAtintatcd front pigm-e 6.15a.
klprap used for eurface otabillzatlon of olopea doee not add Alguilicaut reolotance to 611dhtg
or elope failure an s
d 6hould Hot be conidered a retallth th h
tg wall. e dtmeut stability of the Doll
Hm6t be 0atlefactoty before riprap to u6ed for cut face otabillzatloH. 510peo appI Oachntg 1.5:1
uwy tr..quire epcclal stability Aualyele.
Channel Atabillzatlou and of iCnitibank protection-17eoign criteria for sizing otone for stability
or chauneie are contahted in Appendix 8.05'.
Alter blanket- A filter blanket It,A layer of material placed betwcetl tite riprap and tite uttder1 4110
0011 to prevent Boll utoventctt htto or through the riprap.
vel layer or a
etic
natttufacitured filter
qY this texpGes6 pu roteer. file design of a grAvve gravel or lfilterr blar ket IA tbmed oil tilefratio
dace whit the
of paticle eize ht I:he ovetiying filler material to that of Mic bare mates fat in accorn
r
criteria below. The dcoigned gt Avet filler blanket ntay eonrlot of 6everat tayera of inaearingly large
particle6 h out 0011d to eroeiort Conti ol stone.
A gravel filter blanket 0110u1d have tite following rclalaons(dp for a 6ta1ble design:
d1rNter s 5
d85 babe
5< dl5Atter. S 40
d15 base
1 Fioelon and 9edlmene ConGol�/finning and Oeelgn Manual
G.ib P I VRAP F.15.doe-3-
d5OI11Yer 5 40
d50 baoc
III these relaUonshlpe, filter refine to the overlying material and bare rer';, 10 the urderiying
materlal. Illcrc rcl8tlorlrhipo ntuot: hold between the filter matei ial and th.� Lase uialerinl (soil
foundaLiou) and beLweerl the liprap and the filter. More than one. layer of !ill^r timVerfat may be
needed. Each layer of filter ulal:elial should be at least 6lncher tk' k.
A syntllctic filter fabric may be coed M1.1i or lit Vince or gravel Inte,s. the fu!Iotd1 I pal ticle slm
I Clatlonrldpr ollould exist:
I
• filter fabric covering a base with granular particles contalnhtg 50%or le•o (by wdght) of fine
Vat Hcler(lero than U,S. Standard Slcve Ile.200(0.074 irm)):
a. dm baae.(ttutl) >1
E05'filter fabric(nun)
b. total open area of filter should riot exceed36%,
• Filter fabric covering other sollo:
A. E05 to no larger Chan U.S.5tandard Sieve no.70(0.21 rum)
b. total open area of filter ollould not exceed 10%
'E"00-Equivalent opening 61W compared to a U.S.rtaudard sieve olze.
No filter fabric ollould have lers than 4%open it ea or an E05 leer than U.r;, r31 nndard Sieve No.
100 (0.15 null). Ilse penucability of the fabric muot be grealer than that rf I I`.r roil. The fabric
rttay be made of woven or nonwoven nlonofilaulent yatur and rhould meet, t I!:: following ntini"m!u
r equircnrcut e:
• thickness 20-60 ntlla,
• grab ot,myth 90-120lb,
• conform to A5fM D-1652 or A51M 0-171.
filler blnukelr ollould alwayo be Vlovlded where rccpage Is rlgnilicauD or whine flow velocity and
duration of flew or IAN bnlence may cau6e the mldertying roil VA UCIe6 to mc,c I h'ough the I'VraV.
G01I'5 f KIJCI ION
SfECII"IGAI IONS 5ubgrade rrcpm atoon-prepare the 6ubgrade for riprop and filter to the rc<luhwi Ihtes and grades
shown on the plano. Coulpact any fill required in the eubgradc to a density that of
Hie surrounding uudietwbccl uaterlal or overfill depreocionr with liprap. f�.ru�✓c bruoh, trees,
ol.umpo, and other objectlouat•Ie materlal. Cut the oubgrade sufficienlsly 41,ri, Llmt the fd11161led
glair,of Lhc liprap will be at the elevation of the surrounding area. Channclr.rhould be rxcavatad
eufflcicutly to allow placelumlt of the riprap In a manner ruck that the finishcu.I iuride dinrerl6ions
alld grade of rile liprap sleet-derdgn 6VecincaLlonr.
Sand and Grnvcl filter blanket-piacc the filter blanket ldrtutediately after the 4,umtd femldatlon to
pl cpared. for gravel, spread filter atone In a unlrorvn layer to tale rpecll C II 1!cplJ1. Where "lore
I.han one layer of filter material Ir used,opread the layerr Mth nlhdnlal n1lr;in0.
Synthetic Filter fabric- Place the cloth filter directly on the prepared fwuclatlon. Overlap the
edges by at.Ieare 121nches,and apace anchor Villa every 3 feet along the overlap. Cuy the upper
and lower-ends of the cloth a miuintun of 12 Inches below growld. Take care net to dautage the
cloth when plar-Leg liprap. If damage occurs remove the liprap and repair the miser by addhtg
atlol.11e layer of filler materlal Mth a nlhllmum overlap of 12 hlchee around I.lic c!amagcci Area. If
extensive damage ds susVecl ed,railove and replace the enkhe sheet.
Where large otonee are used or ulachlne placement to difficult,a 4-inch Jaye,-Or fine gravel or rand
"ray be needed to protect the filter cloth.
Stone placement- placement of rlprap ellould follow Inane«aately after Vlacemrnt of the filter,
place liprap eo that IC forulr a dense,well-graded flIaor of stone with a utlniu.nm of voldr. The
desheel dirhibu Nou of stones throughout Lhc u1a66 MAY be obtained by 6elecl` losdhlg at the
quarry and controlled dumping during final placement. place tip,ap to mo for !6ickneso 111 one
(DA5 F'.1VKAN 6.15.Goc-4-
operatlon. Do not place Ilprap'by dmnping through chutes or other ir,lbods that cause
segl egatlon of stone slzes. lake care not to dIrlodgo the undellylug base or li:I CI when placing tire
otollco.
the toe of the riprap slope should be keyed to a stable foundation at Ito bass. 1 he toe should be
executed to a depth about 15 times the design thickness of the Ilprap mid should extend
horizontally from the elope.
The finlehed slope should be free of pockets of small sCoue or clusters of large storms. Hand
plachlg play be neceogary to achievo the proper distribution of stone sizes to pinduce a rela Nvcly
snlootlI,md for III surfaco. the Rill slled grade oFthe riprap should blend with the surrounding area.
No over fall or protruslon of I iprap should be apparent.
MAINTENANCE In general,once a riprap Installatlou has been properiydesigned and Metalled It rcrtulleer very little
nrahrtellallec. Plprap should be hlspectod peliodically for scour or dislodged stones. Control of
weed mid hrnell growl:1 clay be needed In collie locatimle.
r
• 6.trJ I lVKA' 6.l5.doe-fi-
TAULE 6.15b SIZE5 FOR PirrAr AND M510N CON IROL 5TONE SPECIFIED DY111E N.C.DErAPIM=NT OF
T RANSrOP TAI ION
Fir rap Erosion Conttvl
Claoo Clare War Claeo
1 2 A 13
5 to 200 Ib 25 to 250 Ib 2"to 6" 5'to 15"
30%ehall 00%shall
welglt a weigh a Itthr
ndnihwrn of Ifluhl of tO01b. ,
6U Ibo.each each
No utore than No more that 10%tolerance
10%ohall . 5%Ithall wclgh top And bottom
welglt le6o Ices than 50 elzcs.
than 15Ib. lb.each
each
Equally cile- Equally die-
taibuted,no trlbutcd no
gradation gradatlon
specined epecined
eource: Nortli Carolina Aggregates AsoociaLion
F�
6.62 5EVIMEN7 FENCE (51L7 FENCE) 6.62.dad-I-
UEfINIIION A temporary ocdimcnt banter conoloUng of filter fabric Wiled at the t'OlIclII, el lot died, and
oupporLeel iry poete.
ITKi"05E "lip Ict:ain ecdinlCIlL h0111 onlall A011.417cd MCAO * roduciug the velochy of OPa"I noc.e to allow
ecdhncnt depooition.
GONUI I IONS WI HTF
i PPACI I(T APPLIE5 Below elnall d161,ultled Alen)Icea that I/4 act'e pet'100 ft of fence.
Where runoff can We otored Wchhld the eedlnlett farce without damaging tiro retire or t11e
oubinerged at CA bchhld the fence.
Uo not htotall pediment fences acrooe rh eallic,ditcllee,or wetetwaye.
PI Ai It lit IG
COtJ31ULKAfI0tl5 /,ocdlulrtiv retire le a pemmable batrler flit.should be planned ao A pysPcm I n IClaln sr<liment on
the ronetr[let.loll eil.c. llie fence, rrtahlo oedilnent plintariiy by letarcling Aow and promoting
cirpoeil loft. h1 operAtion,gciml Ally the fcnce Wecottes clogged with fine pal I Ucc;,which reduce now
rape. illlo causce A pond to develop more ciulckly WrlOud Lie fcnce. the deeigu+'r shore!'anticipa to
pondinq and provide ouffcleill: storage Al cap And overflow rndlcl0 to I'Icccnt flows from
ovm topping Llie fenre. `since erdlulcnt retiree arc not deelgned to withstau,a high heads, locale
l:hcnl 00 trial;only ollallow poolo can form. lie the ends of a pediment fence Ira 0 the landocape to
pl event: now at'OOIId the end ar the 'CIIce before the pool re.Acllee design Icvcl. Provide s1Abllized
ou Llcl.p to protect I:he fence syetenl allcl 101Caee atominowo that exrced tic d^elgu etpnn.
Depooition occum as title etomoc pool fomte bchhld the fence. VIC deice;<r can cllrcct nowe to
pPccified depoeit.Ioil alcae iluougll appropriate p0eitlo111110 of the fcnre or by providing an
excavated area behind the fence. Plan depool tion areae at acceesr,le poin I,y 10 promote Ioutllle
clraneul.anti main manes. 6how depooi tlon at WI the erasion and oedinlent a ttrm control plarl.
A ecdlmclllt fence Otte Ae a diverelou If placed slightly off the conttour, l hie+ may We used Iry the
designer Co couCl of shallow,unll'orm flows front stnAll dleturbed Areas an,T to'Hiver ordintrrlt laden
Wal er to depoe1t 011 Al Cie.
5edinlent fencce nerve uo function Along tidgee or new drainage dhidro where titers Ie little
movcnlcut.0r wALer, Coufiuing or diverting rmlorf mmecesparily with a sediment.fence play create
erosion and OCClittletltatioll problems that would 110t OUICtNiee Occur.
DE 31Gt1 CPI I EP.IA Ensure that the drainage area ie no greater than 1/4 acre per 100 ft fcnce.
Make tihe(mice stable for the 10-yr peak etortn runoff.
Where All runoff to to be*toad behind the fence,enoure fiat the [IIJA ull❑ elope length behind A
0Cdll IIClll.retire dodo not exceed Cite epecl lioAGoue spoilt WI 1 able 662:.1..
Ensure that Cho depCh of Impounded water does not exceed L5 ft at any poll II .along Lhe fence.
If noucrooive outldte ate provided, elope loloblr may be Incicaeecci I,ryotd tl`j Ice 1011 A ellow i [it T Al
but: runoff front the At CA 0110.uld be determined and byea p. y A
alollg thr, retire nmpt be checked, Tile vclority of the flow at tile outlCV 01'Along the fence allould
be WI keeping with Table,£5.05',Appendix 13.051.
'I APIT 6.62n MAXIMUM 61-OPE LEN0114 61-OPE.AND SLOPE FOP WNICII 5EDIMENf rFNcv:i6 APPLICA6l.1-
61 OPE SLOPE LENGII I(ft)
2/ COO
2 to 5%
50
5 to 10% ?5
10 to 20 15
>20%
I Fivn,4+n end 9edGncnf.Cocrhn/P/atnGrg err'Ueel®n Alnnunl
Co.62 5L"-mmrNT FCNGE (51LT rtNGF) I C.62.do -2-
I'rovlde a rlprap oplaoh pad or other outlet protection device for any pOlnt where now may overtop
the oedllucut fence,ouch ao natural depreerione or ewalee. Ensure that the nhaxlluuul height of
Lire fence at.a protected, heiufoloedoutlet doce not exceed 1 ft acid that eupport pout rpacing
doeo not exceed 4 ft.
lire deelgu lire of A eynthetic eedlurellt fence ehould be 6 monthe. Vurlap le only acceptable for
pet IWO up to 6U dAye.
COI191 RUCTION _
5pECIFICANON9 MATERIALS
1. Uee A synthetic filter fabric or A pervloue sheet: of polypropylene, nylon, polyester, or
polyethylene yarn, width le Certified by the timnufactuh'er or euppller As couformIng to the
i equimrucUti shown in TAW 6.621b.
Syntlhetc filter fabric ehould contain ultraviolet ray Inhibitor, and etabilirere to provide
nlhdnhuln of 6 monthe or expected UOAble cmratrurtlon life at.a temperature range of O to
120°F.
2. Ensure that poste for eedlunent fenceo are elther 4-Inch diameter pine, 2-111ch diAureter
oak, or 1.33 Ib/Ihlear ft steel writ a mluimunl length of 4 ft, Make rrne that steel pasts
lhAve pr ojeGtIOne to fACilltare fAatcrhllrg the PAIa'ie.
3. For relnforcenient of otandard strength fllter fabrlc, uee wile fence with a nlininluiu 14
gauge and a nlaxinimn meek epachrg or 0InClhee.
IASLE 6.62.1; 5f ECIFICA11ON5 FOR SEDIMENT Fl_NCE FA6RIC
rimicALpROmw REQUIREMENTS
Filtering Effelency 85%(min) -
lenelle Strength At Standard 5bength-
20%(1119x)Elongation 30 lbAht In(ntln) _
51m/y Flow Rate 0.3 gal/eq ft/mil(1nm)
CONSTRUCTION
-- 1. Conotruct the redht¢nt barrier of stAndard strength or extra otrmh9tih eyutlhctic filter
_.. fAbdGO.
2. Cnoure that the Ihelght of the pediment fence does not exceed 18 Inclhce Above the ground
surface. (I ligher fences nlay Inhpound volumes of water oufficlent to cause failure of the
structure.)
3. Cenptruct the filter fabric from A continuoue roll cut to the length of t-Ire bander to avoid
Joints. When Johrto arc nece06ahy, pecmely fasten the rill,-cloth only et A support poet
with ovehlAp to the next poet.
4. Support etandard otrength filter fabric by wire meek faetened recm"ely to the upelop,side
of the Foote uohrg heavy duty wire staplco at leaet 1 Inch long,or tie h ji ee. Fxtend Lire wire
nnceh oupport to the hOttoun of tine trench.
5, When a wire mesh support fence Is need, apace Foote a maximum of 8 ft Apart. Support
Foote ehould be driven occurely Into the ground to a rnhhhnunl of 18 hhclise"
to. Gets strength flier fabrlc with 6.ft poet spacing doce not requlie wire mesh eupport
fences 9tAple or wire Lie filter fabric directly do Foote.
V. Excavate a trench appr'oxltnatcly h blclhcs wide and 8 hlchee deep along tale propoeed line
of poste and upolope front the bait icr(Figure 6.62a).
8. Dmkfiil tile tit elicit wilal coinparted eoil or gravel placed over the filter 17a12110.
9. Do not attach the filter fabrlc to exlethhg trcee.
Co.62 5EdIMENf FENCE (JILT FENCE) e..62Aoc-3-
MAIN I[NANGE Inspect redimenk fencer at least once a week and after each ralurall. Make any required repairs
Inmiediately.
Should the fabric of a redinient fence collapse, tear,decompose or become Ineffective, replace It
promptly. Rcplacc bui lap evciy 6O days.
Remove ecdimeut dcpoolts ar neccoraiy to provide a61e0juat4 rtorage volwue for the neRt rain and
to reduce pi eoswro on the fence. We care to avoid miderndning the fence dm iug cicanout.
Remove all fencing mateiialr and unstable rcdiment deposit,, and being the area to grade and
stabilize it after the contribul-ing drainage area har been properly rtabillzed.
I
6.63 GHECK DAM 6.M..doc-l-
LlmNIIION 5tuall temporary otone dame conettvcted ac r000 a draluageway.
FLIP
,F705E 7o reduce or oslort In a draitage channel by reAbicting the velocity of flow It the channel.
CO[1011ION5 WI IME
PP.ACIIGL"APPLIES lhlo practice may be lived no a temporary or emergency meavure to limit eroolon by reducing flow
iu omall opal chaunelo. Limit drainage areao to 2 acme or[coo. LrO NO 115E Cl IECK DAM5 IN
LIVE 51 REAM5.
Check dauto may be uoed to:
• reduce flow In Antall temporary channels that are degrading, but, where prnnanelt
etabili�a tlon is hnpractical due to tlrcir short period of uoefulneSo;
• reduce flow Ili small erodhtg chauuele whoa conotructlon de[ayo or weather condit[one proven
timely Inotallatlon of noneoelve llncr o.
PLANNING
COMM)MAI10115 Check dalllo are an expedlcul:way to reduce gullylltq Ill the bottom of chanuelo that will be filled or
otablllzcd ol.a Intri dat.c. It In unually bri Let to Ilur,the chauucl or divert,the flow to otsblllze tic
dra!u!el pun to lur>tAl check damn. I lowever, under choumotnuceo where thie to not feaolble,
check daure may be helpful.
Check dame luotalled Ili graso-llucd clranriclo may kill the vegetative Ihdnq If submergence after
ratio Is too long and/or rilthtg Is exceerive. All Atone and riprap uluvt be removed if mowing Is
planned no part of vegetative malltfenaIca.
Conrldel-the alternative of protecthtg the channel bottom with materials ouch no riprap,concrete,
fiberglass nrat,or other Illrotective lirihrgo it combination with grass before.oclecting check dauto.
DE51GN GRITERIA 111e following cr Itela Should be used when derlgniug a check Ciotti:
• Fuoure drat the drainage area above the check daul doea not exceed 2 Acrer.
--' i Keep the maximmn height at 2 ft at the corner of the dant.
• Keep fire carter of the check danl at Ieaet 9 Incheo lower than the outer edged at natural
ground elevation.
• Keep the rldc rlopea of the dart at 2:1 or flatter.
• FIMUr'e that the MAXIMUM Spaclug betwern dance places the toe of the upstream darn at the
Same clovation as the top of the dowrrotreaur daul.
• 5tabll[ze overflow ai"tar along the channel to resist eoslou caused by check dams.
• Uoe 2 to 15-Itch Atone(N.G.Department of Troneportatlon claoo A or ciaoo 13 croolon control
otone).
• Key the otone Into tihe ditch banka and extend It beyond the abutulento a minimum of 15
Ircl!ea to avoid waehoutS from overflow around the dam.
CON5IRUCIION
SrEGif ICA110N5 I. Place otone to the Ihreo and dhuenSlouo shown Ill ire plan on a filter fabric fomldation.
2. Keep the center rt�one oection at leaot 9 Ireheo below natural gromtd level where the dam
abuto the channel banke.
3. Extend stone at Iraet 1.5 ft bryotd the ditch banke to keep over water(rout undercutting
the daut Ao it re-emirs the chamrel.
6.85 CI-ILCK PAM 6.O3.Anc-2-
4, Oct opachtg between darne to asoure taut the elevatlon at tine top of t he lower dam to the
salitc as the toe elevatlon of the upper dart.
6. rrotect the chattel downstream from the loweet check dam,coneldci irg 11111 water will flow
over and arottd tfle dam.
to. Make sure that the channel reach above the most upotreant dam le stable.
7. Bist c that chattel appurtenances, such as culvert entrancco below check dams, are not
subject,to damage or Mockage front dlsplaced etoneo.
MAN I ENANCE Inspect check dams and channels for damage after each i unoff event.
Anticlpate oubmeigernce and deroeil.lon above the check dint and eioeion fioni high flows around
the edgeo or the darn. Correct all damage 6ntedlately. If signiflcant eioolon occure between
damo,Install a pi otective r Iprap Ihier in that poitlort of the channel.
Remove oediment accumulaled f•ehincl the dame ao needed to rrevenl� rl;!niage to channel
vcgetatlou,allow the. chattel to Cit liti through the etoue check datn,and picverr. large flows hom
canymq ecdimmit wer tale dani. Add c,foneo to dame ao ❑ceded to maintain dcslgn height. and
ci000 eectioll.
5TORMWATER MAINTENANCE FLAN
for
MAGNOLIA PLACE,
BU51NE55 PARK 5UBDIVI51ON
Townehip No. 7 Craven County
North Carolina
June 15,1999
TABLE of CONTENTS
Narrative................................................................................................................................................. 3
MaintenancePlan................................................................................................................................ 5
-2-
NARRATIVE
Projer,LD , ri foil
The purpose of the project is to construct a stormwater retention pond to Serve 7.19 acre
Magnolia Place, Business Park Subdivision. The project is in Township No. 7, Craven County, North
Carolina and is being developed by Magnolia Investors, LLC.
The work proposed will include excavation of the stormwater retention pond for the Magnolia Place,
Business 5ubdivision,and construction of its on site storm drainage system.
Site Descri ion
5ee Plan.
Adjacent Property
Land use in the vicinity is commercial and residential. The land immediately to the north is
undeveloped. To the east, and west is developed commercial.
Planned_Er_osionand_5edimentation G9ntroLPractic�� '
A temporary gravel construction entrance/exit will be installed at the southwest project
entrance. During wet weather it may be necessary to wash vehicle tires at this location. The
entrance will be graded so that runoff water will be directed away from proposed roadway.
As soon as final grade is reached on the proposed roadway, the subgrade will be stabilized with
a 6-inch course of NC DOT standard size A13C stone to prevent erosion and dust during the
construction prior to paving.
Slopes will be lightly roughened by disking just prior to vegetating. Surface stabilization will be
accomplished with vegetation and mulch as specified in the vegetation plan. Roadway base
courses will be installed as soon as finished grade is reached. Dust control is not expected to
be a problem due to the small area of exposure. Should excessive dust be. generated, it will be
controlled by sprinkling with water.
�oi1s
The project site soils consists mainly of sand, oilt and clay.
0joneral
-3-
The otormwater collection eyotem described herein and on the attached plan will provide the
following methods for control of sediments and for removal of pollutants from the developed site
runoff.
1. Collection of all runoff from the site during development of the stormwater
retention pond with controlled discharge.
2. Retention of the first one (1) inch of rainfall of runoff on the roadway and proposed
parking and building areas into the otormwater retention pond. This runoff will
drain over a 2 to 5 day period into the grass-lined Swale before drainage into an
existing ditch.
3. The retention time for the pond are set at 3.5 days with a total outfall of 5,578
cf/day from (3) 1 inch diameter orifice.
4. The otormwater runoff in excess of the first one (1) inch of rainfall will discharge
from the otormwater retention pond into a decant orifice structure. The storm
pool elevation is set at 23.7 ABV M51- with an additional 8' emergency discharge,
at elevation 23.7 adjacent to the existing ditch, as shown on the plan.
5. The entire project site to be oerved by the otormwater retention pond as shown on
the"5tormwater Management Flan of Magnolia Place, Buoineos FarO
0. No 404 wetlands have been determined to be on thin site.
7. —5eeding opecificationo shall be as specified in the approved Erooion and
Sedimentation Control Plan.
-4-
MAINTENANCE PLAN
The Owner Shall maintain the pond during the construction phase of the project and after
construction is completed for all routine and non-routine maintenance taoko. The Owner ohall aloo
be responsible for the perpetual care of the stormwater retention pond.
Conotruolwi Yba-ee
All erosion and sediment control practices shall be checked for stability and proper operation
following every runoff producing rainfall and in no case less than once every week during
construction. All repairs shall be made immediately and shall be in accordance with the approved
Erosion and 5edimentation Control plan.
The otormwater retention pond shall be inspected during the construction phase of the project
following every runoff producing rainfall and in no case less than once a week. Check the
embankment, spillway, outlet, and Swale for erosion damage, and inspect the embankment also for
piping and settlement. Make all necessary repairs immediately. Remove all trash and other debris
from around the decant orifice structure and around the pool area. Periodic inspection of the
discharge orifice shall assure that the system is not clogged. The retention pond shall be
inspected for a build-up of sediment. If and when the sediment layer exceeds 18 inclies thick on
the average above the design grade, then this oedirnent ohall be removed. At the close of the
construction phase of the project, the pond ohall be cleaned of excess oediment to the deoigned
grade and begin functioning as otormwater- retention pond. All regrading or repairing of the side
olopes, seeding, mowing and any and all repairo ohall be performed prior to close-out of the
construction phase.
The graoo-lined Swale from pond overflow otructure shall be properly inspected and maintained
against erosion, weeds, and woody vegetation. All seeded areas shall be maintained to sustain
the required vegetation. Any and all bare areao ohall be replanted ao necessary, with all repairs
made immediately.
Maint&nanaL&quiremeutr2
Owner ohall be responsible for all routine and non-routine requiremento associated with the
maintenance of the stormwater retention pond.
Upon completion of earth dioturbing activities and for 12 months following completion of the work,
the owner shall inspect the oite following every runoff producing rainfall. A written log ohall be
maintained of any needed repairo noted at the inspection,the name of the Contractor completing
the repairo,and the date such repairs are completed.
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goutin�Ma intenance
1. Mowing. The Side-slopes, embankment, buffer area, areas within the fence, areas
adjacent to the emergency spillways and the grass-lined Swales Shall be mowed at
least once a month during the main growing season and at least two other times
during the year to prevent woody growth and to control weeds. Graoo Shall be,
mowed to a "meadow-like" condition and Shall be maintained according to Section
6.11 Permanent Seeding of the approved Erosion and Sedimentation Control flan.
2. inspections The Stormwater retention pond ohall be inspected (at a minimum of)
on an annual basis to ensure that the Structure operates in the manner originally
intended. Additional inspections shall be conducted during wet weather, or times
of extreme weather to determine if each pond iS functioning properly. Inspection
priorities shall include (but not limited to) the following: checking the embankment
for any erosion, Subsidence, cracking, bare areas in the grass,and tree growth; the
condition of the emergency Spillway and adjacent ditch; the fence and adjacent
planting buffers; the accumulation of sediment; clogging of the decant orifice
structure; the adequacy of upstream and downstream channel erosion protection
measures including any modifications which have occurred to the contributing
watershed, and the pond structure including the Stability of the side slopeo.
Inspections shall be carried out with "As-Built" retention pond piano.
3. Debris and litter removal from the surface of the pond
shall be included as a part of the periodic mowing operation. rar ticular attention
shall be paid to any floating debris around the decant orifice structure, and the
structure shall be checked for possible clogging. Any trash found within the area of
the pond, ditch,and fence shall be removed and disposed of properly according the
County regulations.
4. Fro@ion-ContraL Corrective measures and repairs shall be done to the pond side
Slopes, embankment, emergency spillway and grass lined Swale where settlement,
slumping,and erosion has occurred. Repair ao necessary. Repair or replace the rip
rap protecting the channel near the outlet as required to stop the erosion. All
repairs shall be done in accordance with the original Plano and Specifications.
5. RuioAnce.Contwl. Owner shall maintain the retention pond and adjacent areas So
aS to control the possible problems of weeds, odors, algae, and insects. Proper
maintenance shall take care of most problems except in timed of extreme dry
weather. Owner shall also use biological control against mosquitos and algae
through the use of fish and fat head minnows when possible in lieu of chemical
applications.
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L`Lsn-routil]�Maintenance
1. Str r Repairs and ReoJa�etnent Owner Shall replace all deteriorated
inlet/outlet works and decant orifice structure when deterioration from use and
age causes them to fail and function properly. Owner shall be responsible for all
costs incurred with their replacement. Replacement shall be in accordance with
original plans and specifications.
2. 50dim -RmavaL Owner shall be responsible for the removal of excess
accumulated sediment in the pond when the storage capacity is significantly
reduced from the design capacity due to the properly designed and functioning
stormwater retention pond. Owner shall be responsible for all incurred costs of
removal and proper disposal of the sediment in accordance with all local, state,
and federal regulations. Sediment removal/clean out cycle for stormwater
retention pond is recommended on a ten to twenty year cycle. Owner shall every
five (5) years measure the depth of sediment above design grade to determine
rate of accumulation and to establish a time line for sediment removal.
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