20110387 Ver 1_Stormwater Info_20110516

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M-W
WAKE Environmental
COUNTY Services
NORTH CAROLINA
Wake County Board of Education
1551 Rock Quarry Road
Raleigh, NC 27612
ATTN: M.J. Desmoreaux Jr.
RE: Letter of Conditional Stormwater Approval - April 27, 2011
TEL [phone]
FAX [phone]
Water Quality Division
336 Fayetteville Street • Raleigh, NC 27602
www.wakegov.com
0dL9
F?_iAY 2011
Project Name: Rolesville High School H-6 McNeely Associates PA Attn: Larry Ragland
Stormwater Permit #: S 2528 5501 McNeely Drive
Date Received: 3/31/11 Raleigh, NC 27612
Date Processing Initiated: 3/31/11 Phone #: [phone] Fax#: [phone]
Disturbed Acres: 4.3 Submittal ? Revision
Plan Review Fee: $ 24,250.00 PENDING 1. Maintenance Manual and Budget: Prior to CO
Plan Permit Fee: $ 24,250.00 PENDING 2. Maintenance Covenant: Prior to CO
Nitrogen Offset Fee N/A 3. As-built Plans and Certification:
Required prior to CO
Watershed: Neuse River Basin -1, 03-04-01 4. Annual Inspections Report: Required annually
Dear Mr. Desmoreaux:
The above-referenced stormwater management plan has been reviewed and conditionally approved for the
addition of 23 acres of impervious cover for the project. The project shall provide peak flow and nitrogen
control through a bio-retention basin. The stormwater improvements and all conditions of approval must be
completed and approved by Wake County prior to final signoff of the Certificate of Occupancy (C.O.) for
your building permit. It is very important that your contractor, engineer and yourself be aware of these
additional provisions to insure that the outstanding stormwater management requirements are submitted,
reviewed, approved and installed, such that these conditions are satisfied. Items required prior to building permit
approval are listed below.
1. Maintenance Plan: The developer must record and reference a maintenance plan that instructs
the property owner about the annual maintenance tasks and associated costs for at least a 20-year
period. It will be the responsibility of the property owner to update the maintenance plan at least
every 10 years.
2. Maintenance Agreements: The developer must record, and reference a maintenance agreement
that sets forth the property owner's continuing responsibilities for maintenance. The Stormwater
Agreement document shall be completed and recorded; the agreement shall be cross referenced
with the easement plat.
Maintenance Easements: The developer must record easements for access, maintenance and
inspections by Wake County Government. The record plat shall indicate the boundaries of each
BMP, label the type of BMP and indicate the boundary of a 20' access and maintenance
easement.
4. As Built Plans: Upon completion of required improvements, the developer or the developer's
representative must submit an as-built survey of the required stormwater improvements to the
Rolesville high School
SW Approval
April 27, 2011
Page 2 of 2
Wake County Department of Environmental Services. This survey shall indicate whether
stormwater improvements were constructed in accordance with the County approved stormwater
plan.
5. Additional Plat requirements: Plat should show and call out the entire project area used in
storm water calculations. Any future development not related to the school will require an
amendment to this plan as well as a new storm water permit for the new developed area. Final
plat submittal must also be in accordance with the attached Final Plat Submittal document as
applicable.
Finally, there is a Stormwater Permit Fee of $ 24,250.00 and a Stormwater Review Fee of $ 24,250 to
be paid to Wake County. Please contact Lori Gorman of the WCPSS (919-857-9692) Email
[e-mail] for remittance of these fees to Wake County. Your memo should reference your
Stormwater Permit # S 2528.
This request for Wake County to evaluate a stormwater management plan does not relieve the applicant
from their responsibility to meet all applicable State and Federal Laws, including, but not limited to
necessary approvals from Federal Emergency Management Area Flood regulations/requirements,
Division of Water Quality stormwater or other water quality regulations/requirements, U.S. Army Corps
of Engineers Article 404/401 (Wetlands/Streams) jurisdiction/requirements, and/or any Federal, State,
County and Local municipal regulations or permit requirements. The approval issued in this letter cannot
supersede any other required permit or approval.
If you have any questions about this approval please call me at [phone].
Sincerely,
6)1??
Glenn Johnson
Watershed Manager
cc: McNeely Associates PA
WAKE
COUNTY Environmental Services
NOR III CARCII.IW
Final Plat Submittal
TEL [phone]
FAX [phone]
Floodplain & Stormwater Management
336 Fayetteville St. P.O. Box 550
Raleigh, NC 27602
Table with impervious calculations
Perpetuity statement residential
Show impervious limit on each lot rounded to nearest whole number
Asterisk lots requiring flood permits residential
Flood hazard areas flood hazard soils and FEMA flood zones
Drainage easements
Backwater areas / easements
Show finished floor elevations as required for lots with flood backwater or FEMA
encroachment.
Show required buffers, flood hazard areas, drainage easements, ...
Show specific locations of permanent stormwater devices (including level
spreaders) with maintenance easements; label as permanent stormwater detention
and maintenance easement.
Show required statements in support of design calculations such as tree
reservation areas and disconnected impervious.
Flood lain Notes
Buffer Notes
If flood stud required, as built survey for flood crossings.
Receipt for required NC EEP offset fee.
Stormwater permit fee aid / permit issued.
Completed Stormwater Agreement
Completed Maintenance Agreement
Deed Restrictions / Protective Covenants
As Built survey for stormwater devices see as built checklist
Performance guarantee in lieu of as-built plans
Stormwater signature block
Plan Notes:
Perpetuity Statement - Maximum Impervious Area Square Footage on each Individual
Lot will be Stringently Enforced with no Exceptions into Perpetuity. Plans approved
limiting the maximum impervious surface to XX square feet per lot.
Stormwater BMPs to be maintained by the homeowners association per stormwater
agreement recorded in DB PG
Reference the maintenance manual for the Stormwater BMP.
Performance Guarantee disclosure (if one has been posted)
WAKF
COUNTY Environmental Services
NOR I'll (: AROI.INA
Drainaae Easement Notes:
TEL [phone]
FAX [phone]
Floodplain & Stormwater Management
336 Fayetteville St. P.O. Box 550
Raleigh, NC 27602
It shall be the responsibility of the property owners to maintain the drainage easements
and any drainage structures therein, so as to maintain the integrity of the drainage
system and ensure positive drainage.
Easements may not be piped without receiving plan approval from Wake County.
McNeely Associates PA
Landscape Architects & Planning Consultants
5501 McNeely Drive • PO Drawer 30126 • Raleigh, NC 27622
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LETTER OF TRANSMITTAL
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Copies Date Sheet(s) Description

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Remarks:
Copies to:? Dennis E Pitts, RLA, ASLA
Larry J Ragland, RLA, ASLA
Keith Downing, RLA, ASLA
CONFIDENTIALITY NOTICE: This message, including any attachments is for the sole use of the intended recipient(s) and may contain
confidential and privileged information. Any unauthorized review, use, disclosure or distribution is prohibited. If you are not the intended
recipient, contact the sender and destroy all copies of the original message.

McNeely Associates PA
Landscape Architects & Planning Consultants
Memo to: Jennifer Mitchell, Environmental Engineer/Consultant
Glen Johnson, Environmental Engineer/Consultant
From: Keith Downing,RLA, ASLA
Project: S-2528, Rolesville High School (H-6) H6ROL
Date: April 13, 2011
Re: Storm Water Control Letter of Receipt, 3/29/11
Please find below written responses to comments noted from the first review comments
letter dated March 29, 2011.
1. Provide a copy of the approved erosion control plan and contact Wake County when
measures have been installed (required prior to release of the building permit)
R: Erosion control permitting is being handled through NCDENR. Plans have been
submitted and the plan approval review has begun. We will provide Wake County a
copy of the NCDENR approved plans upon receipt of approval.
2. Provide a digital version of your Hydroflow package.
R: A digital version of the Hydroflow package has been emailed to Glenn Johnson at
[e-mail].
3. Your storm water tool submittal shows a Bio-retention basin with IWS. I could not
locate any construction detail for the IWS. Please confirm IWS with by adding the
appropriate detail or remove IWS from tool submittal.
R: IWS has been removed from the tool submittal. A revised digital copy of the tool
has been emailed to [e-mail].
4. Provide a detailed construction sequence specifically for the conversion of temporary
sediment basin #1 to storm water BMP. Also, add a prominent note that Wake County
storm water staff are to be notified prior to BMP conversion and level spreader
installation.
R: A detailed construction sequence specifically for the conversion of temporary
sediment basin #1 to storm water BMP and installation of Level Spreader has been
added to sheet L-608.
McNeely Associates PA
Landscape Architects & Planning Consultants
5. The Hydrograph appears to show the Post BMP Peak discharge as equal to the Post
la combined flow (4.914 each). Should not the combined flow be greater?
R. The reason the post peak flow of the combined hydrographs is not higher than the
pre peak flow of the by-pass watershed is because the basin delays the peak flow from
it to be way behind the peak of the by-pass watershed. The outflow hydrograph from
the basin shows a dramatic peak reduction and delay of the peak flow coming into the
basin. Review the graphical hydrograph supplied and you will see the post peak from
the basin occurs much later than the peak of the by-pass watershed it is being
combined with.
6. Level Spreader: a) Provide BMP supplemental form verifying compliance for
pollutant removal. b) Is the dissipater/level spreader combination on sheet L605 being
proposed to meet the requirement of 2ft/sec discharge to wetlands? If so, provide
calculations. It is not clear from the detail if the 3' end of the dissipater/level spreader
is closed in or open. I don't see how the level spreader will function as will flow
through the end instead of ponding and being forced over the level lip. Provide calcs
for all dissipater.
R. a) A completed BMP supplemental form from NCDWQ is provided under Tab E in
the hydrology report.
b) Calculations showing the dissipater/level spreader on sheet L605 is under 2 fps
is provided. Please refer to the grading plan, sheet L-304, which shows the
ends of the dissipater closed with earth. The detail on sheet L-605 is schematic
in nature. The actual location and configuration is shown accurately on the
grading plan. Weir and channel calculations have been provided for the LS/VFS
and the Energy Dissipater/Level Spreader. All calculations show a flow of less
than 2 fps and are located under Tab E of the hydrology report.
7. DWQ requires that diffuse flow be provided where concentrated flows enter the
Neuse Buffer. Show how this will be achieved for the grass swale around the baseball
field.
R. Swale calculations are shown on sheet L-604. Matting is now also shown on sheet
L-301. Calculations show a flow of less than 2 fps where the channel broadens.
Calculations are located under Tab E of the hydrology report.
8. Bio-retention Design: a) Soil media must be referenced on plan. Media permeability
of 1-6"/hour required. Prefer 1-2"/hr. b) Phosphorus index for media must be low, 10-
30. c) Sod used in the BMP must not be propagated in soil with an impermeable layer
(clay). d) IWS noted in tool but not in detail. Please modify.
xxxxx Page 2 of 3
McNeely Associates PA
Landscape Architects & Planning Consultants
R. a) A detail flag has been provided on sheet L-304 labeling the bio-retention media
mix and referencing the specifications. A copy of the bio-retention media mix
specification is provided in this response package. The media mix has been reviewed
and approved by Dr. Bill Hunt at NCSU. b) We have previous experience and
knowledge with this mix. It is successfully installed and operational in 4 bio-retention
basins designed by our firm. Phosphorus index is specified as under 30. c) T10 Sod is
specified for the bio-retention area. The sod used must be submitted to the Landscape
Architect for review and approval before sod is purchased and installed. Sod
propagated with an impermeable layer will be rejected. d) IWS has been removed from
the tool.
9. Provide access/maintenance easement around storm water device of at least 20
feet.
R. Access/Maintenance easement shown and now labeled on sheet L-104.
10. Provide draft copies of the Stormwater Operations & Maintenance Manual,
Inspections & Budget Manual, Draft As-Built Diagram for Stormwater device, and
Stormwater Maintenance Agreement/Covenant should be supplied. Deed
Restrictions/Protective Covenants Proposal. Completed copies are required prior to
certificate of occupancy.
R. A draft copy of the Stormwater Operations and Maintenance Manual was previously
provided. Another copy is provided. Draft as-built diagram for stormwater device are
the plans submitted for review. The Stormwater Maintenance Agreement will be
completed prior to certificate of occupancy as stated. Per telephone conversation,
Inspections & Budget Manual and Deed Restrictions/ Protective Covenants Proposal are
not required documents for this project.
Xc: File
xxxxx Page 3 of 3
WAKE
COUNTY
Environmental
Services
Larry Ragland
McNeely Associates PA
5501 McNeely Drive
PO Drawer 30126
Raleigh, NC 27622
RE: Storm water Control Letter of Receipt, 3/29111
Project Name: S-2528, Rolesville High School (H-6)
Date Received: 3/18111
Date Processing Initiated: 3/18/11
Review Status: Disapproved
Dear Mr. Ragland:
TEL [phone]
Fax [phone]
Water Quality Division
336 Fayetteville Street • Raleigh, NC 27602
www.wakegov.com
This office has received a Stormwater Control Plan for the subject project in accordance with
the North Carolina Administrative Code 15A 026.0235 (commonly referred to as Neuse Rules)
as well as Section six of the Town of Rolesville Stormwater Ordinance. We have performed a
preliminary review of the submitted plan and have determined that additional information will be
necessary. The items listed below must be submitted to facilitate proper completion of our
review.
/1. Provide a copy of the approved erosion control plan and contact Wake County when
measures have been installed (required prior to release of the building permit). OIL
v'2. Provide a digital version of your Hydraflow package. cV-
3. Your storm water tool submittal shows a Bio-retention basin with IWS. I could not locate
any construction detail for the IWS. Please confirm iWS with by adding the appropriate
detail or remove IWS from tool submittal. 1,--15
4. Provide a detailed construction sequence specifically for the conversion of temporary
sediment basin #1 to storm water BMP. Also, add a prominent note that Wake County
storm water staffare to be notified prior to the BMP conversion and level spreader ri
installation. L3°H 14Q
??. 5. The Hydrograph appears to show the Post BMP Peak discharge as equal to the Post 1a
combined flow (4.914 each). Should not the combined flow be greater?
6. Level Spreader: aj Provide BMP supplemental form verifying compliance for pollutant
removal. b) Is the dissipater/level spreader combination on sheet L605 being proposed
to meet the requirement of 2ft/sec discharge to wetlands? If so, provide calculations. it
is not clear from the detail if the 3' end of the dissipater/level spreader is closed in or
RoiesWle High School 52528
1 st storm water comments
W?
open. If open. I don't see how the level spreader will function as will flow through the
end instead of ponding an being forced over the level lip. Provide talcs for all dissipators
E, 7. DWQ requires that diffuse flow be provided where concentrated flows enter the Neuse i>r
Buffer. Show how this will be achieved for the grasr s?rwl, around the baseball field. ?-
8. Bioretention Design: a) Soil media must be referenced on plan. edia permeability of C" of
1-6in'hr required. Prefer 1-2nlhr. b) Phosphorus index for media must below, 10-30.
S?t.LS
c) Sod used in the BMP must not be propagated in soil with an impermeable layer (clay).
d) IWS noted in tool but not in detail. Please modify a-
V9. Provide access I maintenance easement around storm water device of at least 20 feet. Qoy
10. Provide draft copies of the S#ormwa#er Ope t+orV& Maintenance Manual, Inspections &
Budget Manua[, Draft As-Built Diagram foe tormwater Device, and Stormwater
?k -Maintenance Agreement/Covenant should be supplied. Deed Restrictions/ Protective
ovenants Proposal. Completed copies are required prior to certificate of occupancy.
?/19'H/1 Co 1'o vJIY,?}iGc'j?? 1Jvj l'-?Q?l?L1'+D
Resubmit 2 set of plans. 1 set calculations and a hard copy and digital copy of the Stormwater
Design Too] for continuing review and approval.
When submitting your revision, please provide a cover letter detailing what changes you have
made or any explanations or comments you may have. Depending on your response/proposed
solutions to the above items, additional comments may be generated when your resubmission is
reviewed. Your first resubmission is free, but all subsequent resubmissions require a $150.00
Resubmission Fee.
We will complete our review of the proposed plan as soon as possible and will notify you
concerning any additional findings. If you have any questions or need additional information
please do not hesitate to contact me @ 868-6411. Your cooperation in this matter is
appreciated.
Sincerely,
V
Glenn Johnson
Environmental Engineer/ Consultant
cc: Town of Wendell Planning Staff
Jennifer Mitchell, Wake County
OPERATIONS & MAINTENANCE MANUAL
BIO-RETENTION BASIN
ROLESVILLE HIGH SCHOOL
ROLESVILLE, NC
Owners: Wake County Public School System
Address:1551 Rock Quarry Road
Raleigh, NC 27610
Phone Number: 919-xxx-xxxx
Prepared by: Larry J. Ragland, NC RLA #324
McNeely Associates PA
5501 McNeely Drive
Raleigh, NC 27612
919-782-9677
Date: March 16, 2011 DRAFT
Project: Rolesville High School (WCPSS 1-16)
Date Constructed:
Location: N 35.905531 0 X W 078.445497°
1001 East Young Street
Rolesville, NC 27571
Receiving Water Course: Harris Creek, Wake County, NC [Neuse River Basin]
General Contractor:
Landscape Contractor
Name & Phone Number
Grading Contractor
Name & Phone Number
OPERATIONS AND MAINTENANCE MANUAL
ROLESVILLE HIGH SCHOOL BIO-RETENTION BASIN
This manual establishes procedures for maintenance and operation of the Rolesville
High School Bio-retention basin in accordance with NC DWQ and Wake County
guidelines and as set forth for the Town of Rolesville, NC storm water management
program.
Page 1 of 4
MAINTENANCE OF BIO-RETENTION AREAS
Vegetation-The drainage basin area has a ground cover of common bermuda, which if
properly maintained will prevent erosion of the embankment and provide an easy
surface for inspection. The grass will be most difficult to retain in the area subject to
water level fluctuation. Make certain the grass is not "scalped" too low when mown.
Re-Seeding-Periodic re-seeding may be required to establish grass on areas where
seed did not take or has been destroyed. Before seeding, fertilizer (12-12-12) should
be applied at a minimum rate of 12 to 15 pounds per 1,000 SF. The seed should be
evenly sown at a rate of three pounds per 1,000 SF. The seed should be covered with
soil to the depth of approximately %". Immediately following the planting, the area
should be mulched with straw and tacked into place with a biodegradable slurry.
Trees and Shrubs-Trees, shrubs and other landscape vegetation should be permitted
only as shown on the approved planting plan. The vegetation should be kept healthy
and vibrant. If a tree or shrub dies it should be removed and replaced with another tree
or shrub from the same species (see attached maintenance schedule).
Mowing-Grass mowing, brush cutting and removal of weed vegetation will be
necessary for the proper maintenance of the bio-retention area. All area slopes and
vegetation should be mowed when the grass exceeds 8" in height. Acceptable methods
include the use of weed whips or power brush cutters and mowers. Do Not cut lower
than 1.5" - 2" above grade.
Erosion-Erosion occurs when the water concentrates causing failure of the vegetation
or when vegetation dies and sets up the environment for rill erosion and eventually
gullies from the stormwater runoff. The areas should be inspected as per the attached
schedule. Proper care of vegetative areas that develop erosion is required to prevent
more serious damage to the site. Rills and gullies should be filled with suitable loamy
sand soil compacted and then seeded. Methods described earlier on vegetation should
be used to properly establish the grass surface. Where eroded areas are detected, the
cause of the erosion should be addressed to prevent a continued maintenance problem.
Frequently, problems result from the concentration of runoff to one point of the bio-
retention area instead of a uniform distribution of runoff. This can be corrected by
reshaping, to more evenly distribute the runoff to areas not experiencing erosion
problems.
Rodent Control-Generally, rodents are not a problem. Rodents such as groundhogs,
muskrats and moles are attracted to moist, wet areas and can be quite dangerous to
structural integrity and proper performance of the earthwork and drainage. Groundhogs
and muskrats thrive on burrowing into the manmade earthwork, which become
pathways for seepage. In the event that burrows are detected within the bio-retention
area or dam, the rodents should be dealt with by legal removal.
Trash and Debris--Trash acts as a barrier to stormwater infiltration and attracts
unwanted pests. The bio-retention area should be kept clear of debris such as loose
bottles, cans, food containers and other forms of rubbish. The area should be cleared
of debris as needed, but no less than twice a year.
Page 2 of 4
MAINTENANCE OF SPILLWAYS AND CONTROL STRUCTURE
Inspection of Conduits--Conduits should be inspected thoroughly once a year. Conduits
should be visually inspected at the joints. Pipes should be inspected for proper
alignment (sagging), elongation and displacement at joints, cracks, leaks, surface wear,
loss of protective coating, corrosion and blocking. Problems with conduits most often
occur at joints and special attention should be given to them during inspection. Joints
should be checked for gaps caused by elongation or settlement and loss of joint filler
material. Open joints can permit erosion of the earthwork and possibly the piping of soil
material through the joints. A depression in the soil surface over the pipe may be signs
that soil is being removed from around the pipe. DO NOT just fill this in with more earth
material. Excavate to locate the joint problem and correct that problem before
backfilling.
OPERATION
Sub-surface Drainpipes--Drainpipes should always be operable so that the water can be
drawn down in the event of severe rain or for repairs or maintenance. Using cleanouts
provided, power flush the system once each year to confirm there are no blockages or
disconnects.
Record Keeping--Operation of bio-retention area should include recording of the
following:
Annual Inspection Reports--A collection of written inspection reports should be
kept on record in Section IV of this manual. Inspection should be conducted
annually. Copies should be provided to Wake County Storm Water
Management.
Observations--All observations and corrective actions should be recorded.
Where periodic inspections are performed following significant rainfall, these
inspections should be logged into the Periodic Inspection, Operations and
Maintenance Form in Section IV of this manual.
Maintenance--Written records of maintenance and/or repairs should be recorded
on the Periodic Inspection, Operation and Maintenance Form in Section IV of this
manual.
Other Operational Procedures--The owner should maintain a complete and up-to-date
set of plans (as-built drawings) and all changes made to the bio-retention area over time
should be recorded on the as-builts.
Example Maintenance Schedule for Bio-retention Area
Description Method Frequency Time of year
FILTRATION SOIL
Inspect and repair erosion* Visual Monthly All year
BERMUDA SOD COVER
Mow to 2" height Small equip. Monthly During Summer
Page 3 of 4
DRAINAGE STRUCTURE & PIPES
Inspect box and pipe outlets Visual Monthly All year
Inspect level spreader Visual Month) All year
Flush sub drains Power flush Annually Spring
Inspect Dam Visual Monthly Repair immediate)
Inspect Fore Bays Visual Annually Repair immediately
* See project specifications for special soil mix required if any holes in the basin need
to be filled or repaired. ONLY the special soil mix with Bermuda sod on top will be
acceptable. The special soil mix is NOT required along the banks or on the dam of the
bio-retention basin.
Page 4 of 4
Rolesville High School (1-16)
RATIO Architects, Inc.
SECTION 02900 - LANDSCAPING
PART 1 - GENERAL
1.1: Scope
A. Related Work Specified Elsewhere:
(1) Earthwork (Section 02210)
(2) Erosion & Sediment Control (Section 02230)
B. Work Included in This Section: Furnish all materials, equipment, and labor for the
planting of shrubs, trees, seed, protection maintenance, mulching of plant beds and
grass areas, guarantee and replacement; coordination with other trades and related
items required to complete the work indicated on the drawings and as specified,
including but not limited to:
(1) Existing soil preparation & fertilizing, including placement of topsoil
(2) Placement of bio-retention soils
(3) Placement of prepared planting media including additives
(4) Delivery and placement of baseball and softball 'skinned' area soils
(5) Delivery and placement of Compost
(6) Seeding of grass and "no mow" vegetation
(7) Placement of Bermuda sod
(8) Planting of trees and shrubs
(9) Mulching of all plant beds
(10) Maintenance requirements, guarantees and warranties
12 Industry Standards:
A. References: Some products and execution are specified in this Section by reference
to published specifications or standards of the following (with respective abbreviations
used):
The American Society for Testing and Materials (ASTM).
American Association of Nurserymen (AAN).
U.S. Dept. of Agriculture (USDA).
N.C. Department of Agriculture (NCDA).
Applicable sections of the Standard Specifications for Roads and Structures, latest
edition, by the North Carolina Department of Transportation (NCDOT).
B. Landscape Contractor shall mean a registered "Landscape Contractor" as defined by
the General Statutes of North Carolina. Unless proper credentials and evidence of
experience can be supplied to the Architect to substantiate equal capabilities, only a
Landscape Contractor licensed in North Carolina shall be permitted to perform this
work. NOTE: This landscape contracting firm shall have successfully completed five
(5) projects of similar size to this project within the past five (5) years.
(1) The Landscape Contractor's performance shall be required to conform to the
recommendations provided in the most current edition of the NC Landscape
Contractors Manual (NCLCM) as approved by the NC Board of Landscape
Contractors. Conformance to the NCLCM includes conformance with
recommendations of the NC Cooperative Ext. Service publication, Carolina
Lawns. In the event that the Contractor believes there is an inconsistency
between the NCLCM and requirements of this Contract that could affect the
quality of work; it is the Contractor's responsibility to discuss the situation with
the Architect and Owner's Representative.
LANDSCAPING 02900 - 1
Rolesville High School (11-16) RATIO Architects, Inc.
1.3 Schedule and Requirements for the establishment of Sodded Turf on the Stadium, Baseball
and Softball Fields:
A. An inspection by the Architect shall be performed on or before August 29, 2012 after
the Contractor has completed the initial installation of sod on the Stadium, Baseball
and Softball fields. This inspection will allow for the establishment and maintenance
of these fields by this Landscape Contractor from August 29, 2012 until Substantial
Completion of this contract on July 1, 2013.
(1) Stadium, Baseball and Softball Fields (Sodding): If the Contractor fails to
complete the initial sodding on these athletic fields on or before August 29, 2012,
the Owner shall assume the responsibility for the installation of sodding these
fields and shall deduct a lump sum of $160,000 from the Contract Amount to
cover the cost of the installation of sod and the other damages incurred by the
Owner due to the Contractor's failure to complete this work. The Landscape
Contractor will remain to be obligated to maintain these sodded fields, including
watering, mowing, weeding and fertilization, from initial completion to Substantial
Completion on July 1, 2013. Due to seasonal restrictions this date shall not be
extended. Extension of the Contract Time for the building shall not extend this
date unless specifically stated in the approved Change Order.
1.4: Submittals:
A. Guarantees: Submit guarantee in writing (in duplicate) stating terms of guarantee,
name of Landscape Contractor, name of Owner, name of Project, location, and dates
of guarantee.
B. Project Schedule: Prior to 30 calendar days of beginning landscaping work as defined
herein, submit a proposed time schedule indicating estimated dates for beginning and
completing the following operations:
(1) Submittals.
(2) Delivery of materials.
(3) Preparation of seedbeds and planting beds.
(4) Seeding.
(5) Planting.
(6) Sodding
The initial sodding on the Stadium, Baseball and Softball Fields is required on or
before Auaust 29. 2012.
The Substantial Completion Date for Landscapina the Entire Site is July 1. 2013.
C. Maintenance: Prior to 14 calendar days from beginning Seeding, Planting and
Sodding operations; submit to the Architect, with copy to the Owner, a typewritten
outline of maintenance procedures to be followed by the Landscape Contractor during
establishment of the project landscaping. This Contractor will maintain all of the
landscape work prior to Substantial Completion (Initial Acceptance by the Owner)
including irrigation and maintenance of fields and grounds. The outline shall conform
to the requirements of the Contract and recommendations provided in the most
current edition of the NC Landscape Contractors Manual as approved by the NC
Board of Landscape Contractors.
D. Materials:
(1) Manufacturer's names and data relating to planting fertilizers, soil, and additives
shall be submitted for approval.
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(2) Two (2) bagged samples of triple shredded pallet mulch shall be submitted for
approval.
(3) Two (2) bagged samples of 'skinned area' soils shall be submitted for approval
prior to purchase and delivery to the site.
(4) Two (2) bagged samples of "Compost" shall be submitted for approval prior to
purchase and delivery to the site.
E. Certificates of Inspection: The Landscape Contractor shall be responsible for all
certificates of inspection of plant materials that may be required by federal, state, or
other authorities to accompany shipments of plants.
F. Inspection: The Landscape Contractor may request an inspection of plant materials
by the Architect or his authorized agent to confirm quality, size and variety of plant
materials prior to installation at the site. This preliminary inspection shall not in any
way impair the right of rejection for failure to meet other requirements during progress
of work.
G. Sub-Contractors: All sub-contractors must be approved by the Architect in writing.
H. Maintenance Schedule during Guarantee Period: Submit to the Owner, with copy to
Architect, typewritten instructions outlining procedures to be established by the Owner
for maintenance of landscape work during the guarantee period. Submit to Architect
for approval 30 days prior to Substantial Completion.
PART 2-PRODUCTS
2.1: Materials:
A. Gravel or Crushed Stone: (used for drainage) shall be a mixture of crushed gravel
so graded that 100% by volume shall pass a 1 1/2" screen and shall be equal to
NCDOT standard size # 57M.
B. Fertilizer: Shall be slow release commercial fertilizer delivered to the site in unopened
original containers each bearing the manufacturer's guaranteed analysis. Any
fertilizer that becomes caked or otherwise damaged shall not be accepted. Fertilizer
shall contain a 10-10-10 ratio of nitrogen, phosphate, and potash, unless otherwise
determined by soil test and analysis.
C. Lime: Lime shall be dolomitic ground limestone meeting NCDA requirements for
agricultural limestone.
D. Mulches:
(1) Plant beds and saucers shall be mulched with a three (3) inch layer of triple
shredded pallet mulch that has been dyed dark brown using iron-oxidized
pigment that is applied to the mulch with an atomization system. Mulch is to be
free of metal, foreign objects, yard waste, tree debris, weeds and insects.
(2) Seeded areas shall be mulched with clean grain straw, free of pests and blight
and tacked with asphalt emulsion, type RS or CRS, at the rate of 10 gal. per
1,000 S.F.
E. Decomposed organic matter: Provide any kind of aged ground (milled) bark that is
non-toxic to plants, of uniform texture and subject to decomposition.
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F. Water: Water to be used in this work shall be furnished by the Landscape Contractor
unless otherwise noted. Equipment for watering the seed, sod and plants, including
hoses as required, shall be furnished by the Landscape Contractor.
G. Triple Screened Topsoil: Triple screened topsoil furnished under section 02210 to
meet project requirements shall be a natural, fertile, friable soil, possessing
characteristics of representative productive soils in the vicinity. "Triple Screened
Topsoil" has typically been sifted through three 1/2" x 1/2" sized screens and contains
no rocks or debris that would hinder planting operations. See Unit Prices and
Allowance for supplying additional amounts of this product to the site for use in the
planting operations if the Owner desires.
NOTE: This Contractor will be responsible for cleaning, screening and
amending the topsoil on site for his use. Debris or other objects that would
hinder planting operations will not be acceptable in the topsoil.
H. Plant Materials:
(1) Plant list - a list of plants is shown on the landscaping plans and/or in these
specifications.
(2) Nomenclature - the names of plants required under this contract conform to
those given in Hortus Third, Copyright © 1976 by Cornell University for its L. H.
Bailey Hortorium. Names of varieties not included therein conform generally
with names accepted in the North Carolina nursery trade.
(3) Quantities - Quantities necessary to complete the planting design as shown and
located on the drawings shall be furnished by the Landscape Contractor.
Quantities shown in the plant list are for the convenience of Landscape
Contractors and are believed to be substantially correct, but the accuracy of
quantities shown in the list is not guaranteed. All labeled new plantings on the
plan shall be installed where indicated.
(4) Quality and Size - Plants shall have a habit of growth that is normal for the
species and shall be sound, healthy, vigorous, and free from insect pests
including fire ants, plant diseases, and injuries and defects such as knots,
sunscald, abrasions and disfigurements. All plants shall equal or exceed the
measurements specified in the Plant List, which are minimum acceptable sizes.
They shall be measured after pruning, with branches in normal position. Any
necessary pruning shall be done at time of planting. Requirements for the
measurements, branching, grading, quality, balling and burping of plants in the
Plant List generally follow the code of standards and requirements of
AN21Z60.1, American Standard for Nursery Stock, latest edition.
(5) Do not make substitutions. Substitutions will be permitted only upon
submission of proof that any plant as specified is not obtainable during the
scheduled planting season, within 250 statute miles of the project location.
Proof of the unavailability of a plant must contain as a minimum, a list of ten
nurseries within 250 miles that have been checked by the Landscape
Contractor for plant material in question. Written authorization of the Architect
will be required for any substitution. The nearest equivalent obtainable size or
variety of plant having the same essential characteristics shall be used. No
adjustment of the contract price shall be permitted.
(6) Plants designated "B&B" in the Plant List shall be balled and burlapped. They
shall be dug with firm, natural balls of earth of sufficient diameter and depth to
encompass the fibrous and feeding root system necessary for full recovery of
the plant. Balls shall be firmly wrapped with burlap or similar material and
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bound with twine, cord, or wire mesh. Where necessary to prevent breaking or
cracking of the ball during the process of planting, the ball may be secured to a
platform. Ball must be kept moist and shaded until it is planted. The natural
root collar of all B&B stock shall be within 2 inches + or - of the root ball soil line
as it occurred in the nursery.
(7) Plants designated "CON" in the Plant List are container grown plants. Any
"B&B" plants available in containers may be substituted at the discretion of the
Landscape Contractor. If stored on the site, they must be watered thoroughly
at least once every 48 hours. Do not remove "CON" stock from containers until
planting time.
(8) Label each group of trees and shrubs with securely attached waterproof tag
bearing legible designation of botanical and common name.
(a) Where formal arrangements or consecutive order of trees or shrubs are
shown, select stock for uniform height and spread, and label with number
to assure symmetry in planting.
(9) Deliver trees and shrubs after preparations for planting have been completed
and plant immediately. The root zone of all plants not yet installed must be
protected from weather (freezing, drying and direct sunlight), and mechanical
damage.
(10) Grass seed shall be improved turf type Bermuda, "Jackpot" "Savannah" or
other variety approved by the Owner's Representative. All seed shall be
certified seed meeting all standards of purity as required by the United States
Department of Agriculture.
(11) No-mow vegetation grass mix shall be Appalo Sericea Lespedeza, Annual
Ryegrass, Weeping Lovegrass, Kentucky 31 Tall Fescue and Southeast Native
Wildflower Mix guaranteed to meet minimum purity standards of U.S.D.A. The
Southeast Native Wildflower Mix shall include a mixture of all of the species
listed below, totaling approximately 345,000 seeds per pound and is available
from Green Resource, 1218 Management Way, Garner, NC 27529
919.779.4727 [e-mail]. The scientific name for each
species in the mix is as follows:
Asclepias tuberosa Aster novae-angliae Coreopsis lanceolata
Coreopsis leavenworthii Coreopsis tinctoria Cosmos sulphureus
Echinacea purpurea Eryngium yuccifolium Gallardia pulchella
Gaura lindheimeri Gypsophila elegans Ipomopsis rubra
Lavatera trimestris Linum grandiflorium rubrum Liatris spicata
Lupinus perennis Mirabilis jalapa Monarda citriodora
Papaver rhoeas Rudbeckia amplexicaulis Phlox drummondi
Rudbeckia hirta Rudbeckia triloba Salvia coccinea
Verbena tenuisecta
(12) Sod shall be 419 Tifway Hybrid Bermuda for the Stadium Field and T-10 Hybrid
Bermuda for all other locations. Provide machine cut, strongly rooted, certified
turf grass sod, not less than 2 years old, free of weeds and undesirable native
grasses and stripped not more than 24 hours before laying. Sod pad size shall
be uniform thickness of 5/8", plus or minus 1/4", measured at the time of cutting
and excluding top growth and thatch. Provide in suppliers standard size of
uniform length and width with maximum allowable deviation of plus or minus
1/2" in width and 5/8" in length. Sod pad should be able to support its own
weight and retain its size and shape when suspended vertically from a firm
grasp on the upper 10% of the sod pad.
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Pre-Emergent Herbicide: Herbicide shall be Ronstar-G as manufactured by Rhone-
Poulanc Corporation, or approved equal.
Post-Emergent herbicide: Herbicide shall be Round-up by Monsanto, or approved
equal.
K. Burlap for plant balls shall be untreated and readily decomposable.
L. Anti-Dessicant: Emulsion type, film-forming agent designed to permit transpiration,
but retard excessive loss of moisture from plants. Deliver in manufacturer's fully
identified containers and mix in accordance with manufacturer's instructions.
M. Wrapping: Tree-wrap tape not less than 4 inches wide, designed to prevent borer
damage and winter freezing.
N. Staking/Guying System: Use 3/4" wide woven, green, flexible synthetic strapping with
900 lb. break strength similar or equal to Arbortape TM system or Arbor Tie with
stakes and deadmen of sound, new hardwood, treated softwood, or redwood, free of
knot holes and other defects.
0. "Skinned Areas" at the Baseball and Softball Fields: The soil mix (upper 4" deep)
shall be a sandy loam mixture meeting the following USDA analysis after testing and
amending by the Landscape Contractor:
Textural Analysis
Sand
Silt
Clay
Diameter of Sieve (mm)
0.05 to 2.0
0.002 to 0.05
less than 0.002
Percentage
Min. 65-80%
Remainder
Min. 17%-Max 25%
Sand Distribution
Gravel
Very Course
Coarse
Medium
Fine
Very Fine
P. Bio-Retention Soil Mix:
US Sieve (mesh)
10
18
35
60
100
270
Percentage Retained
No more than 3%
No more than 10%
Remainder of
Combined
Percentages
(1) Provide a Bio-retention soil using the three components listed below that will
meet the ASTM standards as follows. One local supplier familiar with this
product is Triangle Landscape Supplies, [phone].
Perma-till Fines 40%
Coarse Sand 45%
Aged Pine Bark Fines 15%
Clay percentage will not exceed: 8%
Silt percentage will not exceed: 20%
**Silt + Clay must not exceed: 20%
**Phosphorus index not to exceed: 30
a. The bio-retention soil mix shall be a uniform mix, free of stones, stumps,
roots or other similar objects larger than one and one half inch. No other
materials or substances shall be mixed or dumped within the bio-retention
area that may be harmful to plant growth or provide a hindrance to the
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planting or maintenance operations. The bio-retention soil shall be fee of
noxious weeds.
b. The bio-retention shall be tested and shall meet the following criteria
pH range 5.2-7.0
organic matter 1.5-4%
magnesium 35 lb./ac
phosphorus P2O5 75 lb./ac
potassium K2O 85 lb./ac
soluble salts not to exceed 500 ppm
c. All bio-retention areas shall have a minimum of one test per 200 cubic
yards. Each test shall consist of both the standard soil test for pH,
phosphorus, potassium and additional tests organic matter and soluble
salts. A textural analysis is required from the site stockpiled bio-retention
soil.
d. Since different labs calibrate their testing equipment differently, all testing
shall come from the same testing facility. Should the pH fall out of the
acceptable range, it may be modified (higher) with lime or (lower) with iron
sulfate plus sulfur.
(2)Stalite Rotary Kiln Expanded Slate Fines:
a. ASTM C29 Unit Dry Weight loose (48 Ibs/cf to 55 Ibs/cf)
b. ASTM C127 Specific Gravity to meet 1.45 to 1.60 Dry Bulk
c. ASTM C330 to meet the ASTM Gradation 1/2" - #4 size
1/2" to #4
Sieve Size % Passing
3/4" 100
1/2" 90-100
3/8" 40-80
#4 0-20
#8 0-10
d. Absorption (ASTM C127) to meet 5% or more.
e. The expanded slate must contain no clay lumps or any organic impurities.
(3) Course Sand:
a. Grain Size Distribution (ASTM C136-95A)
Sieve Size % Passing
3/8" 100
#4 95-100
#8 85-97
#16 60-80
#30 10-20
#50 5-15
#100 0-5
(4) Probase:
a. Must be aged and fully decomposed pine bark humus screened to minus
1/2".
b. The screened bark humus must fall below the following limits:
Ammonia (NI4-N) 20 PPM
Magnesium (Mg) 5.0 PPM
Iron (Fe) 8.0 PPM
Manganese (Mn) 1.0 PPM
Copper (Cn) .10 PPM
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Zinc (Zn) .15 PPM
Soluble salts 0.50 mmho/cm
pH must fall between 4.0 and 7.0
Q. Planting Media for Courtyard Planters: This Plant Bed Media can be prepared on
site or pre-mixed by many local landscape suppliers including Triangle Landscape
Supply (919-460-4410). Plant Bed Media shall be comprised of the following
components:
(1) 30% Permatill Expanded Slate: 3/8" to #8 PermaTill Rotary Kiln Expanded
Slate (5/16")
a. ASTM C29 Unit Dry Weight loose (48 Ib./cf to 55 Ib./cf)
b. ASTM C127 Specific Gravity: 1.45 to 1.60,SSD
C. ASTM C330: ASTM Gradation 3/8" to #8 size
Sieve Size % Passing
1/2" 100
3/8" 80 -100
#4 5-40
#8 0-20
#16 0-10
Absorption (ASTM C127) No more than 10%
The expanded slate must contain no clay or any organic impurities.
(2) 20% Expanded Slate Fines:
Sieve Size
#4
#8
#16
#30
#50
#100
Fine Material
% Retained
0-3%
15-30%
45-60%
60-70%
75-83%
83-86%
2.78-3.32 % passing #100
(3) 30% Sandy Loam:
a. Must meet US Department of Agriculture soil classification for Sandy
Loam.
(4) 20% Compost:
a. Humus material shall have an ash content of no less than 8 percent and
no more than 40 percent.
b. The pH of the organic matter shall be between 5.5 and 7.5
c. The salt content shall be less than 10 millimho/cm at 25 degrees
Ece<10) on a saturated paste extract.
d. Boron content of the saturated extract shall be less than 1.0 part per
million.
e. Silicon content (acid-insoluble ash) shall be less than 30 percent.
f. Types of acceptable composted products can be derived from the
following feed stocks: manures, mushroom composts, straw, alfalfa,
yard wastes, low in salts, low in heavy metals, free from weed seeds,
free of pathogens and other deleterious materials.
g. Composted wood products are conditionally acceptable (stable humus
must be present).
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h. Sludge-based materials are not acceptable including municipal bio-solids.
i. The organic amendment must have a Carbon/Nitrogen ratio of <25:1.
j. The compost shall be aerobic without malodorous presence of
decomposition products.
k. From 75 to 100 percent organic amendment particles shall pass the
2.0 mm sieve size and from 50 to 80 percent shall pass the 1.0 mm
sieve.
1. Maximum total permissible pollutant concentrations (heavy metals) in
the organic amendment shall not exceed the following parts per million
(dry weight) concentrations for constituents listed.
Arsenic: 20
Cadmium: 15
Chromium: 300
Cobalt 50
Copper 100
Lead 200
Mercury: 10
Molybdenum: 60
Nickel 100
Selenium 30
Silver: 10
Vanadium: 50
Zinc: 250
m. From 45 to 65 percent moisture measured via wet-weight basis.
n. Free of stones, debris, plant material.
o. Organic amendment must test between 5 to 8 on Solvita Maturity Test
R. Pea Gravel (used for drainage in courtyard plant beds): Pea gravel shall be any color
and 100% shall pass a 3/8" screen, similar or equal to NCDOT standard #78M.
PART 3 - EXECUTION
3.1: Existing Conditions:
A. Experience: Employ only experienced personnel who are familiar with the required
work. Provide adequate Supervision by a qualified foreman.
B. Planting time: Plant or install materials only during normal planting seasons for each
type of landscape work required. Correlate planting with specified maintenance
periods to provide maintenance until acceptance by the Owner.
C. Subgrade elevations: Excavation, filling and grading required to establish elevations
shown on the drawings are specified under other sections of these specifications.
Landscape Contractor shall verify finish grade elevations and notify the CM@Risk
and Architect in writing of any discrepancies prior to beginning work.
D. Construction Below Ground or Overhead: It is not contemplated that planting shall
occur where the depth of soil over underground construction, obstructions or rock is
insufficient to accommodate the roots or where pockets in rock or impervious soil will
require drainage. Where such conditions are encountered in excavation of planting
areas and where the stone, boulders, or other obstruction cannot be broken and
removed by hand methods in the course of digging plant pits of the usual size, the
Architect shall be notified so that this material may be removed by the Owner, or the
plant material relocated to a more favorable location. Removal of rock or other
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underground obstructions, relocation of construction, and provisions of drainage for
planting areas shall be done only as approved by the Architect and the Owner.
3.2: Preparation of Areas to be Grassed, receive No-Mow, Sodded, Planting Beds, Skinned
Areas and Planting Soil Mix:
A. General:
(1) Preparation shall not start until after all other site irrigation and utilities work has
been completed and approved by the Architect within the areas to be seeded,
sprigged, sodded or planted.
(2) The Contractor shall confirm to the Architect in writing that all surfaces to
receive Lawn Grassing and No-Mow Vegetation are at the proper finish grade
and have been "policed" to remove all rocks, trash and debris from the surface
prior to beginning soil preparation.
B. Areas to be Grassed (Lawn and No-Mow Vegetation):
(1) Loosen soil thoroughly to a depth of 6 inches, or if heavy clay or overly
compacted soils are present, sub-soil plow to 12" depth until tillage is suitable
for subsequent operations. Remove all rocks greater than 1" diameter from
prepared soil surface prior to seeding. Work in the following soil additives:
Lime - 120 lbs./1000 sq. ft.
Fertilizer - 35 lbs./1000 sq. ft. (Formula 10-10-10)
20% Super Phosphate 25 Ibs/1000 sq. ft.
(2) Grade lawn and no-mow areas to a smooth, even surface with a loose,
uniformly fine texture. Roll and rake lawn areas to remove ridges and fill
depressions as required to meet finished grades. Limit fine grading to areas
which can be seeded and/or planted within the near future.
(3) Tolerances: Refer to finish grading tolerances in Section 02210 Earthwork.
C. Areas to be Sodded:
(1) Loosen soil thoroughly to a depth of 6 inches, until tillage is suitable for
subsequent operations. No rocks are allowed in surface soils to receive
sod. Work in the following soil additives:
Lime: 100 Ibs./1000 sq. ft.
Fertilizer: 20 Ibs/1000 sq. ft.
Superphosphates: 10 Ibs/100 sq. ft..
(2) Fine grade lawn areas to a smooth, even surface with a loose, uniformly fine
texture. Roll and rake to remove ridges and fill depressions as required. Limit
fine grading to areas which can be sodded within the near future. Moisten lawn
area before sodding if soil is dry.
D. Plant Bed Preparation
(1) Approximately one week prior to beginning planting in the beds, plant beds
should be watered to germinate any weed seed. One to two days later, spray
plant beds with "Roundup" or other approved systemic weed killer, applied at
the manufacturer's recommended rate of dilution and coverage.
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(2) At the time of planting, thoroughly till plant beds to a minimum depth of eight (8)
inches. Add to this broken subsoil a sufficient amount of decomposed organic
matter sufficient to raise the organic content to 10% by volume and the
following additives:
Lime 40 lbs./1000 S.F.
Fertilizer 25 lbs./1000 S.F. (Formula 10-10-10)
The Landscape Contractor may adjust rates of lime and fertilizer based on
laboratory soil tests if approved by the Architect prior to beginning planting
operations.
E. Mix the following soil additives to topsoil stored on-site or approved subsoil for
planting soil mix:
(1) Decomposed organic matter - use sufficient amount to raise the organic
content to 5% minimum by volume.
(2) Use 0.1 pounds/cu. ft., 10-10-10 fertilizer.
(3) Use 0.4 pounds/cu. ft. dolomitic lime meeting North Carolina Department of
Agriculture standards for fineness and purity.
(4) Circular pits shall be excavated for all trees and shrubs. Diameter of pits for
trees shall be at least two feet greater than the diameter of the ball or spread of
roots. The depth of pits for trees shall be enough to accommodate the ball of
roots when the plant is set to finished grade. Use planting soil mix as shown in
planting details on the drawings.
F. Dispose of subsoil removed from planting operations. Do not mix with planting soil or
use as backfill.
G. Preparation of Baseball and Softball "Skinned Areas":
(1) Provide soil testing with written verification using USDA Analysis for the existing
soil composition of the "skinned" infield area prior to beginning work in this
section.
(2) Layout the skinned area of the field as shown on the drawings. Obtain approval
of the layout from the Owner's Representative.
(3) Determine exact amounts of amendments (sand, silt and / or clay) to be added to
the existing infield soils (4" deep minimum) to meet the design mix specifications,
or remove the existing soils and replace with the proper infield soil mix for the full
4" depth.
(4) Calculate and remove the unnecessary quantity of infield soil to allow for
amending and mixing to meet design mix specifications. Do not damage existing
improvements while removing excess infield soils from the site. Legally dispose
of excess soils offsite.
(5) After meeting the design mix specifications for the full 4" depth required, maintain
the infield in a smooth, firm safe condition. This will include rolling, raking,
spiking, filling depressions, dragging, tamping and keeping moisture in the
materials.
(6) Apply necessary weed control to keep the infield 100% weed free until initial
acceptance (Substantial Completion).
3.3 Bio-Retention Soil Mix:
A. Mixing Off Site:
(1) Mechanically mix the materials to provide a uniform distribution of the
components.
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(2) Inadequate moisture content: Do not work medium when moisture content is
low that dust will form in the air. Apply water, if necessary, to bring medium to
an optimum moisture content for compacting and planting.
(3) Do not work medium when the moisture content is high enough for excessive
compaction to occur. Aerate medium until moisture content is uniformly
reduced as necessary to achieve optimum compaction.
B. Provide bio-retention soil medium from one source. Medium can be supplied in
bags or bulk.
C. Do not begin filling impoundment until Architect has inspected and approved the
sub-drainage piping with gravel and filter fabric. Take extreme care when filling the
impoundment. Do not damage filter fabric or other drainage structures.
D. Fill bio-retention medium in 12" lifts maximum layers. Place surrounding topsoil fill
to desired depth prior to placing each layer (lift) of bio-retention soil medium. After
initial placement of bio-retention soil, allow soil mix to "settle" for at least 30 days.
After settlement, place additional bio-retention to achieve finish grades.
3.3: Seeding, Sodding, No-Mow and Planting:
A. Seeding:
(1) Grassing Season: All permanent grassing shall be installed according to the
N.C. E. & S. Manual or as approved by the Architect. Temporary grassing will
be planted according to Section 02230.
(2) Prepare seed bed by carefully raking out all debris and provide positive
drainage away from plant beds and buildings.
(3) Final grading and starter fertilizer: Check slope, remove all foreign materials
and stones larger than 1/2 inch in the surface of the prepared soil. Level
soil and roll with heavy (250-300 Ibs) roller. Keep soil damp, not dry or wet,
when it is worked. Alternately rake and roll area until footprints cannot be seen
readily or they are less than 1/4 inch deep.
(4) Apply starter fertilizer at a rate that will provide 1 to 1-1/2 lbs. of actual
nitrogen/1000 sq.ft. Rake starter fertilizers into soil surface about 1 inch deep
and proceed with grass seeding.
(5) Sow grassed areas evenly with a mechanical spreader to produce a uniform
stand of grass.
(6) Seed shall be 'scratched in' with a garden rake or rolled with a light roller or
cultipacker to firm the seed in the soil. The method of seeding may be varied at
the discretion of the Landscape Contractor on his own responsibility to establish
a smooth, uniform grassed lawn.
(7) In normal season, the lawn grass seed shall be sown uniformly at the rate of
two (2) Ibs per 1000 sf of "Savannah" variety hulled Hybrid Bermuda. Sow only
when moisture content of the soil is suitable for sowing grass seed. Keep soil
in moist condition until seeds have germinated.
(7) Mulch: All grassed areas shall be mulched with clean grain straw as specified.
Straw mulch shall be tacked with emulsified asphalt (thinned with water) at a
rate of 150 gallons per ton of straw.
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(8) Establishment and Maintenance: Water, mow, and maintain until an
acceptable stand is achieved.
a. Irrigation: from time of seeding to Substantial Completion, the Contractor
shall keep maturing grass irrigated on a regular basis. Irrigation shall
occur a minimum of once each day until two (2) weeks after date of initial
seeding. Thereafter, irrigation shall occur a minimum of once a week.
b. At no time shall seeded permanent turf be allowed to grow over 4 inches in
height. Throughout this period, the target mowing height shall be 1.5-2
inches. At no time shall more than 50% of the turf height be removed in
any three-day period by mowing or other maintenance activity.
c. Seeded permanent turf shall be fertilized according to the monthly
application rates recommended in Carolina Lawns for common Bermuda
grass or at reduced rates if instructed by the Architect.
d. Weed control shall be provided as necessary to prevent the establishment
or proliferation of a weed species and to achieve acceptable turf at time of
Initial Acceptance.
B. Sodding:
(1) Sodding Season: Anytime during the year when freezing conditions do not
exist and as approved in advance by the Architect and Owner. Sodding around
the building shall not be installed before Spring, 2013.
(2) Lay sod to form solid, uniform mass with tightly fitted joints. "Butt" ends and
sides of sod strips. Do not overlap sod strips. Stagger strips to offset joints in
adjacent courses. Lay sod strips across slopes and perpendicular to drainage
flow. Tamp or roll lightly to ensure contact with subgrade.
(3) Secure with pegs or staples at spacing recommended by the sod grower and
supplier and as approved by the Architect and Owner.
(4) Water sod with fine spray immediately after planting. Water daily during first
two weeks of establishment to maintain soil to depth of 4".
(5) At no time shall sodded turf be allowed to grow over 3 inches in height.
Throughout this period, the target mowing height shall be 1.5 inches. At no
time shall more than 50% of the turf height be removed in any three-day period
by mowing or other maintenance activity.
(6) Sodded turf shall be fertilized according to the monthly application rates
recommended in Carolina Lawns for the utilized grass or at reduced rate if
instructed by the Architect.
(7) Weed control shall be provided as necessary to prevent the establishment or
proliferation of a weed species and to achieve acceptable turf at time of Initial
Acceptance.
C. No-Mow Vegetation (Seeding):
(1) Prepare areas to receive no-mow seeding by carefully raking out all debris and
provide positive drainage as shown on the grading plans.
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(2) Check slopes carefully, remove all foreign materials and stones larger than 1
inch in the surface of the prepared soil. Keep soil damp, not dry or wet,
when applying soil amendments within the upper 6" of the soil profile. Smooth
the surface prior to a sowing seed.
(3) Apply starter fertilizer at a rate that will provide at least 1 lb. of actual nitrogen /
1000 sq.ft. of no-mow area. Rake starter fertilizers into soil surface about 1
inch deep and proceed with grass seeding.
(4) Sow areas to receive no-mow vegetation evenly with a mechanical spreader to
produce a uniform stand of grass. Note: The Landscape Contractor may use a
hydro-mulching system to establish the no-mow vegetation if submitted and
approved by the Architect.
(5) Apply the following rates for the no-mow seed mix (total 138 lbs. per acre):
Appalo Sericea Lespedeza 10 lbs. per acre
Weeping Lovegrass 5 lbs. per acre
Annual Ryegrass 20 lbs. per acre
Kentucky 31 Tall Fescue 100 lbs. per acre
Southeast Wildflower Mix 3 lbs. per acre
(6) Seed during the preferred season (March - April) when possible. If seeding of
no-mow areas must occur outside the preferred season, the Landscape
Contractor may provide an adjusted seed mix formula that includes each
species above in addition to other seed that may improve the overall
establishment during the anticipated times of seeding. This alternative no-mow
seed mix shall be submitted to the Architect for review and approval prior to
beginning the soil preparations.
(7) Mulch shall be applied to the no-mow areas as required in Section 3.4 unless
the Landscape Contractor has proposed an alternative method for improving
the establishment of the seed mix and the alternative method has been
approved by the Architect.
(8) No-Mow Vegetation shall form a healthy continuous ground cover that exhibits
signs of good growth. A minimum of 95% of the specified no-mow seeding
area shall be covered in established growth at time of Substantial Completion.
There shall be no bare areas greater than 10 sq. ft. or 5 ft. in any dimension.
All bare areas shall be re-seeded or sodded prior to Final Completion.
E. Planting:
(1) Planting Season: The normal planting season should be considered as
October 1 through April 15.
(2) After notification to proceed, planting operations shall be conducted under
favorable weather conditions during the normal planting season. At the option
of and on the full responsibility of the Landscape Contractor, planting
operations may be conducted under unseasonable conditions, without
additional compensation, and only when proper "but-of-season" procedures are
utilized.
(3) Layout: New planting shall be located where shown on the drawings except
where obstructions below ground or overhead are encountered or where
changes have been made in the construction. Adjustment to plant locations
shall be approved by the Architect prior to planting. Positions of trees and
plants not otherwise indicated may be scaled from the drawings, keeping the
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relationship to architectural or site features as indicated by the drawings. Turn
plants in pit to face best side out.
(4) Pruning: Remove dead and broken branches from all plant material. Prune
only to retain typical growth habit of individual plants with as much height and
spread as is practical. Make all cuts with a sharp instrument flush with trunk or
adjacent branch in such a manner as to ensure elimination of stubs. "Head-
back" cuts at right angles to line of growth will not be permitted. Trees shall not
be poled or topped. Remove trimmings from site. Never cut leaders without
permission from the Architect.
NOTE: All plants must meet minimum size requirements after any necessary
pruning.
(5) Drainage: The Landscape Contractor shall be responsible for adequate
drainage from all plants. If during the planting operations, the Landscape
Contractor determines that water conditions are such that drain lines or other
drainage measures are necessary, he shall install the necessary measures.
(6) Setting Plants: Unless otherwise indicated on the drawing all plants shall be
planted in raised prepared soil beds, and set on compacted prepared soil mix to
such depth that the finished grade level of the plant - after settlement - will be
approximately 1/3 ball height (4" - 5" above grade measured at the natural root
collar) and above finished grade measured at 3 feet horizontally from al edges
of walks, curbs or permanent fixtures. (See Planting Details.) They shall be
planted upright and faced to give the best appearance of relationship to
adjacent structures. Remove burlap and wire cage down 1/3 from top of balls.
No burlap shall be pulled from under the balls. Roots on bare-root plants shall
be spread in their normal position. All broken or frayed roots shall be cut off
cleanly. Prepared soil mix shall be placed and compacted carefully to avoid
injury to roots and to fill all voids. Add water and tamp the backfill until the
backfill is completely saturated, then allow it to soak away. Fill the hole to
finished grade, and form a shallow saucer around each plant by placing a ridge
of topsoil around the edge of each pit. After the ground settles, additional soil
shall be filled in to the level of the finished grade. Groundcovers shall be
planted in prepared soil beds after mulch has been installed. Straighten mulch
or add additional mulch after planting as needed to achieve finished
appearance.
(7) Guying Trees: (See Planting Details.) Install guys not less than 1/3 height of
tree above ground. Equally space anchors for guys around trunk. Install guys
at ±45 degree angle to horizon. Keep guys taut but not overly tight until the end
of the guarantee period. Guys are to be removed at that time, by the
Landscape Contractor.
(8) Wrapping Trees: After completing guying operations, spirally wrap all
deciduous tree trunks with strip burlap or approved treated paper with at least a
one inch overlap. Do not use wrap to hide trunk damages or problems. (See
Planting Details included on drawings.) Wrap is to be removed at the end of
the guarantee period, by the Landscape Contractor.
(9) Apply anti-desiccant using power spray, to provide an adequate film over
trunks, branches, stems, twigs and foliage.
3.4: Mulching and Protection:
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A. Mulch seeded areas, including no-mow areas, with straw as specified and tack with
water emulsified asphalt at a rate of 150 gallons per ton of straw or other acceptable
means.
B. Protect newly seeded areas from unnecessary pedestrian traffic for three (3) weeks
minimum.
C. All plant saucers and plant beds shall be thoroughly mulched with a 3" layer of mulch
as specified within 2 days of planting.
3.5: Mowing: The Landscape Contractor shall water, fertilize, mow, reseed, roll, re-grade, re-
sprig, replant/patch bare spots and maintain all lawn areas in conformance with the NC
Landscape Contractors Manual until an acceptable stand is achieved and the areas are
accepted by the Owner for maintenance.
3.6: Maintenance:
A. Maintain work of this section from time of installation until Substantial Completion.
Maintenance shall include: watering of seeded and sodded areas, lawns and
plantings, mowing; repairs to turf; protection of plantings; weeding, cultivating, and
mulching plant beds; and at least one application of pre-emergent herbicide (Ronstar-
G) to all plant beds before Substantial Completion and another application at Final
Completion or within 90 days after Substantial Completion as per manufacturer's
recommendations.
B. At edges of all hard improvements (paving, walks, paved play, tennis courts, etc.),
excavate a 3" - 4" deep maintenance edge to aid in lawn edging and retain mulches.
C. Tighten and repair stake and guy supports and reset trees and shrubs to proper
grades or vertical position as required. Restore or replace damaged wrappings.
Spray as required to keep trees and shrubs free of insects and disease.
D. At the end of the guarantee period, and prior to Final Acceptance, all plant beds shall
be free from weeds and edged neatly to a line as shown on the drawings. All plant
tags shall be removed by the Landscape Contractor before the Final Inspection.
3.7: Clean-up and Completion:
A. During landscape work, keep pavements clean and work area in an orderly condition.
B. Protect landscape work and materials from damage due to landscape operations,
operations by other contractors and trades, and trespassers. Maintain protection
during installation and maintenance periods. Treat, repair, or replace damaged
landscape work as directed.
C. Upon completion of work, remove from the site all equipment and other articles used.
All excess soil, stones and debris shall be removed and legally disposed of. All work
areas shall be left in a clean and neat condition. Final Acceptance will not be given
unless all work areas are clean.
D. All damage to existing construction caused by landscaping operations shall be
repaired to the satisfaction of the Owner, at the Landscape Contractor's expense.
3.8: Inspection and Acceptance:
A. At time of inspection for initial completion, sodded turf shall have been freshly mowed
within the last 48 hours. Turf shall be healthy, of uniform color and exhibiting good
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growth. A minimum of 100% of the specified turf area shall be covered in sod that
has been installed for a minimum six weeks. Turf shall be 100% free of all weeds.
B. Should the Multipurpose Fields' turf not be completed on or prior to June 3, 2013, the
Owner will require the Landscape Contractor to place the field on a program of
intensive cultural management in order to bring the fields to acceptance specification
as quickly as possible. Actions will include re-sodding all bare areas (minimum laid
piece size - 1.5 ft. by 2 ft.) and any cultural activity that is suggested by the N.C.
Cooperative Extension Service as being of value in an intensive Bermuda grass
management program. The Owner shall not be responsible for any additional costs
associated with these actions.
C. When inspected landscape work does not comply with requirements, replace rejected
work and continue specified maintenance until reinspected by Architect and found to
be acceptable. Remove rejected plants and materials promptly from project site.
3.9: Substantial Completion Inspection and Acceptance by the Owner:
A. Following receipt of a written request submitted by the Contractor with his list of any
items yet to be completed and the reasons associated with any delays, the Architect
will schedule an inspection of the work to determine acceptability. A list of
deficiencies will be made according to the conditions of the Contract.
B. All grassed areas shall be freshly mown within 48 hours before the Substantial
Completion Inspection. Lawn areas shall be healthy, of uniform color and exhibiting
signs of good growth. A minimum of 95% of the specified seeding area shall be
covered in established turf possessing both stolons (i.e. runners) and rhizomes.
There shall be no bare areas greater than 4 sq. ft. or 1.5 ft. in any dimension.
Seedling plants not having reached tiller stage (i.e. runner producing) shall be
considered bare area. Lawn areas shall be 100% free of noxious and perennial
weeds and relatively free of annual weeds.
C. Sodded turf on all fields and sodded lawn around the building shall be freshly mown
within 48 hours prior to the Substantial Completion Inspection. Turf shall be healthy,
of uniform color and exhibiting good growth. A minimum of 100% of the sodded turf
area shall be covered in sod that has been installed for a minimum four weeks.
Sodded turf shall be 100% free of all weeds.
D. When inspected landscape work does not comply with requirements, replace rejected
work and continue specified maintenance until reinspected by Architect and found to
be acceptable. Remove rejected plants and materials promptly from project site.
E. Final Completion by the Contractor shall be established upon completion of all plant
replacements and repairs to the landscape as identified during the Substantial
Completion Inspection.
3.10: Guaranty and Replacement:
A. Seeding (grassing):
(1) If a satisfactory stand of grass has been produced at the time of Substantial
Completion (Initial Acceptance); the lawn shall be guaranteed for a period of
sixty (60) calendar days. If renovation and / or reseeding is required at the end
of the guarantee period, this work shall be done in conformance with the
requirements of section 3.9.
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(2) If a satisfactory stand of grass has not been produced at the time of Substantial
Completion, July 1, 2013, all bare areas shall be immediately sodded per the
requirements of this section and guaranteed for a period of sixty (60) calendar
days after a successful inspection by the Owner.
B. Sodded Lawn and Athletic Turf:
(1) If a satisfactory sodded lawn and athletic turf has been produced at the time of
Substantial Completion (Initial Acceptance), the turf shall be guaranteed for a
period of sixty (60) calendar days. If renovation and/or re-sodding is required at
the end of the guarantee period, this work shall be done in conformance with
the requirements of this section.
(2) If a satisfactory sodded turf has not been produced at the time of Substantial
Completion (Initial Acceptance), all unacceptable areas will be re-sodded
according to the requirements of this section. Upon completion of these
repairs, the turf shall be guaranteed as in paragraph (1) above.
C. Planting:
(1) Guaranty: After achieving Substantial Completion (Initial Acceptance by the
Owner), warranty plantings for a period of one (1) year after date of Substantial
Completion against death and unsatisfactory growth, except for defects
resulting from neglect by Owner, abuse or damage by others, or unusual
phenomena or incidents which are beyond the Landscape Contractor's control.
Plantings shall be alive and in satisfactory growth at the end of the guaranty
period.
(2) Replacement: At the end of the twelve (12) month guaranty period, inspection
will be made by the Architect upon written notice requesting such inspection
submitted by the Landscape Contractor according to the contract conditions.
Any plant required under this contract that is dead or not in satisfactory growth
as determined by the Architect, shall be removed from the site; these and any
plants missing, shall be replaced as soon as conditions permit, but during the
normal planting season.
(3) Materials and Operations: All replacements shall be plants of the same kind as
originally planted and shall be of size equal to that attained by adjacent plants of
the same kind at the time replacement is made. All costs of replacement shall
be borne by the Landscape Contractor. Only one replacement in conformance
with the provision of this section will be required for each plant declared dead,
in an unhealthy or badly impaired condition, or missing at the time of Final
Acceptance, provided the replacement plant is still healthy sixty (60) days after
installation.
END OF SECTION 02900
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