HomeMy WebLinkAboutBID - 5914 LEMAY LANDSCAPING (5)Technical Specs - 1
LEMAY AVENUE LANDSCAPING PROJECT
The Colorado Division of Highways "Standard Specifications for Road and Bridge Construction" (1999), except
as revised herein, is hereby adopted as a minimum standard of compliance for this project. The City of Fort
Collins Storm Drainage Construction Standards, City of Fort Collins Water Utilities Standard Construction
Specifications, Larimer County Urban Area Street Standards, the Fort Collins – Loveland Water District and
South Fort Collins Sanitation District Standards, and City of Fort Collins Work Area Traffic Control Handbook,
shall also serve as minimum standards of compliance for this project. They are not included in the contract
documents, but may be obtained at the appropriate City Departments. It shall be the Contractor's responsibility
to purchase and familiarize themselves with all of the City Department Specifications. These project
specifications, City Department specifications, and CDOT standard specifications are considered minimum
standards for compliance on this project. In those instances where the CDOT Standard Specifications conflict
with the City specifications listed above, the City specifications shall govern. In those instances where the
CDOT Standard Specifications conflict with any of the provisions of the preceding Sections 00001 through
01750, General Requirements, the preceding sections shall govern.
PROJECT CONSTRUCTION SPECIFICATIONS
INDEX OF REVISIONS
SECTION PAGE
202 REMOVALS................................................................................................... Technical Specs 2
203 EXCAVATION AND EMBANKMENT..............................................................Technical Specs 3
2810 IRRIGATION ................................................................................................. Technical Specs 4-12
2900 PLANTINGS ..................................................................................................Technical Specs 13-23
REVISION OF SECTION 202
REMOVALS
Section 202 of the Standard Specifications is hereby revised for this project as follows:
Subsection 202.01 is revised to include the following:
Technical Specs - 2
The Contractor shall remove all netting and wood bark and any other obstructions that are designated for
removal by the Engineer. All such removals will be measured in the field, and quantities agreed to by the
Contractor and the Engineer.
Subsection 202.02 is revised to include the following:
Disposal Site – All wood bark that is removed on this project shall become the property of the City of Fort
Collins. This material is designated to be hauled to the South Ridge Greens Golf Course adjacent to the
project limits. This work shall be coordinated through the City of Fort Collins Street Oversizing representative
on-site and will be measured in the field and paid for by cubic yard (CY).
Other materials designated for removal shall become property of the Contractor, unless noted in the
specifications or specified by the Engineer to be salvaged or stockpiled. It shall be the Contractor's
responsibility to obtain disposal sites for all unusable material, which is removed.
Subsection 202.11 is revised to include the following:
The Contractor and the Engineer shall field measure and agree upon the quantity to be removed before the
work commences. Should the Contractor fail to request the Engineer to measure any work, the Contractor shall
not be compensated for materials that were not measured by the Engineer.
Subsection 202.12 is revised to include the following:
Payment will be made under:
Pay Item and Pay Unit
The pay unit is denoted by ( ).
202-01 Remove Wood Bark and Netting – (SF)
202-02 Haul Off Excess Wood Bark – (CY)
202-03 Expose Parks Irrigation Feed and Tie-In – (EA)
202-04 Expose Median Irrigation Feed and Tie-In – (EA)
The above prices and payments shall include full compensation for furnishing all labor, materials, tools,
equipment and incidentals and for doing all work involved in removals and rotomilling, including excavation,
backfill, haul and disposal, as specified in these specifications, and as directed by the Engineer. All saw
cutting involved in removing the necessary items in order to complete the Work shall be considered incidental
to the Work and will not be paid for separately.
END OF SECTION
REVISION OF SECTION 203
EXCAVATION AND EMBANKMENT
Section 203 of the Standard Specifications is hereby revised as follows:
Subsection 203.01 is revised to include the following:
Topsoil and Seeded Areas (Parkways Only) - (Stripping, Haul Off-Site) 3” Depth – This work shall consist of
stripping topsoil material to a depth of 3 inches and hauling off-site. This item shall be paid according to plan
quantity.
Technical Specs - 3
Sidewalk Bores 9’ (Additional Sleeving – Not Shown On Plans) – If the pre-existing sleeving is in the wrong
location or has been damaged, the contractor will be required to bore under the sidewalk to provide new and
functioning sleeving. The City of Fort Collins Street Oversizing representative will direct the contractor as to
the location and number of sleeves required once the project has begun. This item shall be measured in the
field and will be paid for per bore (EA).
Pothole Irrigation Sleeving Under Sidewalk – The Contractor shall be responsible for locating irrigation sleeving
and determining if the sleeving is in good condition. Potholing will be paid per sleeve crossing.
Subsection 203.13 is revised to include the following:
Payment will be made under:
Pay Item and Pay Unit
The pay unit is denoted by ( ).
203-01 Strip/Haul/Dispose Existing Grass and Topsoil in 10’ Parkway (Depth = 3”) – (SY)
203-02 Sidewalk Bores 9’ (Additional Sleeving – Not Shown On Plans) - (EA)
203-03 Pothole Irrigation Sleeving Under Sidewalk – (EA)
The above prices and payments shall include full compensation for furnishing all labor, materials, tools,
equipment, and incidentals and for doing all work involved in Unclassified Excavation, Embankment, Haul &
Dispose, Topsoil (stripping, stockpiling, placing), Muck Excavation, Borrow ABC and Median Hardscape
Shaping, including without limitation, haul, stockpiling, placing of material, watering or drying soil, compaction,
proof rolling, finish grading, and disposal of unusable materials, as shown on the plans and as specified in
these specifications, and as directed by the Engineer.
END OF SECTION
REVISION OF SECTION 2810
IRRIGATION
PART 1 – GENERAL
1.01 RELATED DOCUMENTS
Furnish all labor, materials, supplies, equipment, tools and transportation, and perform all operations in
connection with and reasonably incidental to the complete installation of the irrigation system, and
guarantee/warranty as shown on the drawings, the installation details, and as specified herein. Items
of work specifically included are:
A. Procurement of all applicable licenses, permits, and fees including payment of all development,
plant investment, or any other fees and permits associated with the purchase and installation of the
tap.
B. Coordination of Utility Locates (“Call Before You Dig”).
Technical Specs - 4
C. Excavation, installation, and backfill of tap into municipal water line.
D. Excavation, installation, and backfill of water meter and vault.
E. Verification of existing static pressure.
F. Maintenance period.
G. Sleeving for irrigation pipe.
1.02 WORK NOT INCLUDED
Items of work specifically excluded or covered under other sections are:
A. Provision and connection of electrical power supply to the irrigation control system.
1.03 RELATED WORK
1.04 SUBMITTALS
A. Deliver four (4) copies of all required submittals to the Owner’s Representative within 15 days from
the date of Notice to Proceed. Materials List: Include pipe, fittings, mainline components, water
emission components, control system components. Quantities of materials need not be included.
B. Manufacturers’ Data: Submit manufacturers’ catalog cuts, specifications, and operating
instructions for equipment shown on the materials list.
C. Shop Drawings: Submit shop drawings called for in the installation details. Show products
required for proper installation, their relative locations, and critical dimensions. Note modifications
to the installation detail.
D. Project Record Drawings: Submit project record (as-built) drawings to Owner prior to
commencement of maintenance period (refer to specification section 3.11 for specific
requirements).
1.05 RULES AND REGULATIONS
A. Work and materials shall be in accordance with the latest edition of the National Electric Code, the
Uniform Plumbing Code as published by the Western Plumbing Officials Association, and
applicable laws and regulations of the governing authorities.
B. When the contract documents call for materials or construction of a better quality or larger size
than required by the above-mentioned rules and regulations, provide the quality and size required
by the contract documents.
C. If quantities are provided either in these specifications or on the drawings, these quantities are
provided for information only. It is the Contractor’s responsibility to determine the actual quantities
of all material, equipment, and supplies required by the project and to complete an independent
estimate of quantities and wastage.
1.06 TESTING
A. Notify the Owner’s Representative three days in advance of testing.
B. Pipelines jointed with solvent-welded PVC joints shall be allowed to cure at least 24 hours before
testing.
C. Subsections of mainline pipe may be tested independently, subject to the review of the Owner’s
Representative.
D. Furnish clean, clear water, pumps, labor, fittings, and equipment necessary to conduct tests or
retests.
Technical Specs - 5
E. Hydrostatic Pressure Test:
1. Subject mainline pipe to a hydrostatic pressure of 150 PSI for two hours. Test with mainline
components installed. A 2 PSI pressure variation is allowed. Backfill to prevent pipe from
moving under pressure. Expose couplings and fittings.
2. Leakage will be detected by visual inspection. Replace defective pipe, fitting, joint, valve, or
appurtenance. Repeat the test until the pipe passes test.
3. Cement or caulking to seal leaks is prohibited.
F. Operational Test:
1. Activate each remote control valve in sequence from controller. The Owner’s Representative
will visually observe operation, water application patterns, and leakage.
2. Replace defective remote control valve, solenoid, wiring, or appurtenance to correct
operational deficiencies.
3. Replace, adjust, or move water emission devices to correct operational or coverage
deficiencies.
4. Replace defective pipe, fitting, joint, valve, sprinkler, or appurtenance to correct leakage
problems. Cement or caulking to seal leaks is prohibited.
5. Repeat test(s) until each lateral passes all tests.
1.07 CONSTRUCTION REVIEW
The purpose of on-site reviews by the Owner’s Representative is to periodically observe the work in
progress and the Contractor’s interpretation of the construction documents and to address questions
with regards to the installation.
A. Scheduled reviews such as those for irrigation system layout or testing should be scheduled with
the Owner’s Representative as required by these specifications.
B. Impromptu reviews may occur at any time during the project.
C. Final review will occur at the completion of the irrigation system installation and Record (As-Built)
Drawing submittal.
1.08 GUARANTEE / WARRANTY AND REPLACEMENT
The purpose of this guarantee/warranty is to insure that the Owner receives irrigation materials of
prime quality, installed and maintained in a thorough and careful manner.
A. For a period of one year from commencement of the formal maintenance period,
guarantee/warranty irrigation materials, equipment, and workmanship against defects. Fill and
repair depressions. Restore landscape or structural features damaged by the settlement of
irrigation trenches or excavations. Repair damage to the premises caused by a defective item.
Make repairs within seven days of notification from the Owner’s Representative.
B. Contract documents govern replacements identically as with new work. Make replacements at no
additional cost to the contract price.
C. Guarantee/warranty applies to originally installed materials and equipment and replacements
made during the guarantee/warranty period.
END OF PART 1 - GENERAL
Technical Specs - 6
Technical Specs - 7
PART 2 - MATERIALS
2.01 QUALITY
Use materials which are new and without flaws or defects of any type, and which are the best of their
class and kind.
2.02 SUBSTITUTIONS
Pipe sizes referenced in the construction documents are minimum sizes, and may be increased at the
option of the Contractor.
2.03 IRRIGATION TAP AND WATER METER
A. Provide materials required by local codes for installation of the municipal water tap and associated
piping.
B. Provide materials required by local code for installation of the water meter and vault and
associated piping.
2.04 SLEEVING
A. Sleeveing beneath drives and streets shall be PVC Class 200 pipe with solvent welded joints.
B. Sleeveing diameter: equal to twice that of the pipe or wiring bundle.
2.05 PIPE AND FITTINGS
A. Mainline Pipe and Fittings:
1. Use rigid, unplasticized polyvinyl chloride (PVC) 1120, 1220 National Sanitation Foundation
(NSF) approved pipe, extruded from material meeting the requirements of Cell Classification
12454-A or 12454-B, ASTM Standard D1784, with an integral belled end.
2. Use Class 200, SDR-21, rated at 200 PSI, conforming to the dimensions and tolerances
established by ASTM Standard D2241. Use PVC pipe rated at higher pressures than Class
200 in the case of small nominal diameters which are not manufactured in Class 200.
3. Use solvent weld pipe for mainline pipe with a nominal diameter less than 3-inches or where a
pipe connection occurs in a sleeve. Use Schedule 40, Type 1, PVC solvent weld fittings
conforming to ASTM Standards D2466 and D1784. Use primer approved by the pipe
manufacturer. Solvent cement to conform to ASTM Standard D2564.
B. Lateral Pipe and Fittings:
1. For drip irrigation laterals downstream of zone control valves, use UV radiation resistant
polyethylene pipe manufactured from Prime Union Carbide G-resin 7510 Natural 7
manufactured by Union Carbide or a Union Carbide Licensee with a minimum of 2% carbon
black, and minimum nominal pipe ID dimension of 0.810” for ¾ inch pipe.
Use PVC/compression line fittings compatible with the drip lateral pipe. Use tubing stakes to hold
above-ground pipe in place.
C. Specialized Pipe and Fittings:
1. Copper pipe: Use Type “K” rigid conforming to ASTM Standard B88.
Use wrought copper or cast bronze fittings, soldered or threaded per the installation details.
Use a 95% tin and 5% antimony solder.
2. Use a dielectric union wherever a copper-based metal (copper, brass, bronze) is joined to an
iron-based metal (iron, galvanized steel, stainless steel).
Technical Specs - 8
3. Assemblies calling for pre-fabricated double swing joints shall utilize LASCO Unitized swing
joints or approved equal. Swing joints shall be rated at 315 psi, and use O-ring and street
elbow construction.
4. Assemblies calling for threaded pipe connections shall utilize PVC Schedule 80 nipples and
PVC Schedule 80 threaded fittings.
5. Joint sealant:
Use only Teflon-type tape pipe joint sealant on plastic threads. Use nonhardening, nontoxic
pipe joint sealant formulated for use on water-carrying pipes on metal threaded connections.
2.06 MAINLLINE COMPONENTS
A. Main System Shutoff Valve: As per local practice and in compliance with local code.
B. Winterization Assembly: As per local practice and in compliance with local code.
C. Backflow Prevention Assembly: As presented in the installation details.
D. Quick Coupling Valve Assembly: Double swing joint arrangement as presented in the installation
details.
2.07 DRIP IRRIGATION COMPONENTS
A. Remote Control Valve (RCV) Assembly for Drip Laterals: As presented in the installation details. Use
wire connectors and waterproofing sealant to join control wires to solenoid valves. Use standard
Christy I.D. tags with hot-stamped black letters on a yellow background. Install a separate valve box
over a 3-inch depth of ¾-inch gravel for each assembly.
B. Flush Cap Assembly: as presented in the installation details. Locate at the end of each drip irrigation
lateral pipe. Install a separate valve box over a 3-inch depth of ¾-inch gravel for each assembly.
2.08 CONTROL SYSTEM COMPONENTS
A. Irrigation Controller Unit:
1. Rain Bird UNIK Battery-operated controller with one (1) field transmitter for the project, and
one (1) control module for each remote control valve on the project. NOTE: This controller
should only be used if there is no power source available.
2.09 OTHER COMPONENTS
A. Tools and Spare Parts: Provide operating keys, servicing tools, test equipment, other items, and
spare parts indicated in the General Notes of the drawings.
END OF PART 2 - MATERIALS
PART 3 - EXECUTION
3.01 INSPECTIONS AND REVIEWS
A. Site Inspections:
1. Verify site conditions and note irregularities affecting work of this section. Report
irregularities to the Owner’s Representative prior to beginning work.
2. Beginning work of this section implies acceptance of existing conditions.
3. Contractor will be held responsible for coordination between landscape and irrigation system
Technical Specs - 9
installation.
4. Landscape material locations shown on the Landscape Plan shall take precedence over the
irrigation system equipment locations. If irrigation equipment is installed in conflict with the
landscape material locations shown on the Landscape Plan, the Contractor will be required to
relocate the irrigation equipment, as necessary, at Contractor’s expense.
B. Utility Locates (“Call Before You Dig”):
1. Arrange for and coordinate with local authorities the location of all underground utilities.
2. Repair any underground utilities damaged during construction. Make repairs at no additional
cost to the contract price.
C. Irrigation System Layout Review: Irrigation system layout review will occur after the staking has
been completed. Notify the Owner’s Representative two days in advance of review. Modifications
will be identified by the Owner’s Representative at this review.
3.02 LAYOUT OF WORK
A. Stake out the irrigation system. Items staked include: pipe, control valves, and isolation valves.
B. Install all mainline pipe and mainline components inside of project property lines.
3.03 EXCAVATION, TRENCHING AND BACKFILLING
A. Excavate to permit the pipes to be laid at the intended elevations and to permit work space for
installing connections and fittings.
B. Minimum cover (distance from top of pipe or control wire to finish grade):
1. 18-inch over mainline pipe.
2. 3-inch minimum mulch cover over drip lateral pipe in planting beds downstream of drip
system zone control valves.
3. PVC UV radiation resistant lateral pipe shall be installed directly on the soil surface.
C. Backfill only after lines have been reviewed and tested.
D. Excavated material is generally satisfactory for backfill. Backfill shall be free from rubbish,
vegetable matter, frozen materials, and stones larger than 2-inches in maximum dimension.
Remove material not suitable for backfill. Backfill placed next to pipe shall be free of sharp objects
which may damage the pipe. Stones larger than 1-inch maximum dimension are not permitted in
first (deepest) 6-inches of backfill.
E. Backfill unsleeved pipe in either of the following manners:
1. Backfill and puddle the lower half of the trench. Allow to dry 24 hours. Backfill the remainder
of the trench in 6-inch layers. Compact to density of surrounding soil.
2. Backfill the trench by depositing the backfill material equally on both sides of the pipe in 6-
inch layers and compacting to the density of surrounding soil.
F. Enclose pipe beneath roadways, walks, curbs, etc. in sleeves. Minimum compaction of backfill for
sleeves shall be 95% Standard Proctor Density, ASTM D698-78. Conduct one compaction test for
each sleeved crossing less than 50 feet long. Conduct two compaction tests for each sleeved
crossing greater than 50 feet long. Costs for such testing and any necessary retesting shall be
borne by the Contractor. Use of water for compaction around sleeves, “puddling”, will not be
permitted.
G. Dress backfilled areas to original grade. Dispose of excess backfill off site.
H. Where utilities conflict with irrigation trenching and pipe work, contact the Owner’s Representative
for trench depth adjustments.
3.04 IRRIGATION TAP AND WATER METER
Technical Specs - 10
A. Install the municipal water tap and associated piping materials in conformance with local
regulations.
B. Install the water meter and vault and associated piping in conformance with local regulations.
3.05 SLEEVING AND BORING
A. Install sleeveing at a depth which permits the encased pipe to remain at the specified burial depth.
B. Extend sleeve ends six inches beyond the edge of the paved surface. Cover pipe ends and mark
with stakes. Mark concrete with a chiseled “x” at sleeve end locations.
C. Bore for sleeves under obstructions which cannot be removed. Employ equipment and methods
designed for horizontal boring.
3.06 ASSEMBLING PIPE AND FITTINGS
A. General:
1. Keep pipe free from dirt and pipe scale. Cut pipe ends square and debur. Clean pipe ends.
2. Keep ends of assembled pipe capped. Remove caps only when necessary to continue
assembly.
B. Mainline Pipe and Fittings:
1. Use only strap-type friction wrenches for threaded plastic pipe.
2. PVC Solvent Weld Pipe:
a. Use primer and solvent cement. Join pipe in a manner recommended by the
manufacturer and in accordance with accepted industry practices.
b. Cure for 30 minutes before handling and 24 hours before allowing water in pipe.
c. Snake pipe from side to side within the trench.
3. Fittings: The use of cross type fittings is not permitted.
4. UV Radiation Resistant Polyethylene Pipe:
a. Join pipe in the manner recommended by manufacturer and in accordance with
accepted industry practices.
b. Snake pipe from side to side within the trench, on the soil surface, and hold in place with
tubing stakes spaced every five feet.
5. Fittings: The use of cross type fittings is not permitted.
C. Specialized Pipe and Fittings:
1. Copper Pipe:
a. Buff surfaces to be joined to a bright finish. Coat with solder flux.
b. Solder so that a continuous bead shows around the joint circumference.
2. Insert a dielectric union wherever a copper-based metal (copper, brass, bronze) and an iron-
based metal (iron, galvanized steel, stainless steel) are joined.
3. Pre-fabricated double swing joints: Install per manufacturer’s recommendations.
4. Low Density Polyethylene Hose: Install per manufacturer’s recommendations.
5. PVC Threaded Connections:
a. Use only factory-formed threads. Field-cut threads are not permitted.
b. Use only Teflon-type tape.
c. When connection is plastic-to-metal, the plastic component shall have male threads and
the metal component shall have female threads.
6. Make metal-to-metal, threaded connections with Teflon-type tape or pipe joint compound
applied to the male threads only.
3.07 INSTALLATION OF MAINLINE COMPONENTS
A. Main System Shut Off Valve: Install where indicated on the drawings.
B. Winterization Assembly: Install where indicated on the drawings.
Technical Specs - 11
C. Backflow Prevention Assembly: Install where indicated on the drawings. Install assembly so that
its elevation, orientation, access, and drainage conform to the manufacturer’s recommendations
and applicable health codes.
D. Quick Coupling Valve Assembly: Install where indicated on the drawings.
3.08 INSTALLATION OF DRIP IRRIGAITON COMPONENTS
A. Remote Control Valve (RCV) Assembly for Drip Laterals:
1. Flush mainline pipe before installing RCV assembly.
2. Locate as shown on the drawings. Wire connectors and waterproof sealant shall be used to
connect control wires to remote control valve wires. Connectors and sealant shall be installed
as per the manufacturer’s recommendations.
3. Install only one RCV to valve box. Locate at least 12-inches from and align with nearby walls
or edges of paved areas.
B. Drip Emitter Assembly:
1. Locate as shown on the drawings and installation details.
2. Flush lateral pipe before installing emitter assembly.
3. Cut emitter outlet distribution tubing square.
4. Use tools and techniques recommended by the manufacturer.
C. Flush Cap Assembly: Install at the end of each drip irrigation lateral pipe as shown on the
installation details.
3.09 INSTALLATION OF CONTROL SYSTEM COMPONENTS
A. Irrigation Controller Unit:
1. Install battery-operated controller on underside of each remote control valve box cover with
Velcro strapping.
2. Make wiring connection per manufacturer’s recommendation.
3.10 INSTALLATION OF OTHER COMPONENTS
A. Tools and Spare Parts:
1. Prior to the Pre-Maintenance Review, supply to the Owner operating keys, servicing tools,
test equipment, and any other items indicated on the drawings.
2. Prior to Final Review, supply to the Owner the spare parts indicated in the General Notes on
the drawings.
B. Other Materials: Install other materials or equipment shown on the drawings or installation details
to be part of the irrigation system, even though such items may not have been referenced in these
specifications.
3.11 PROJECT RECORD (AS-BUILT) DRAWINGS
A. Maintain on-site and separate from documents used for construction, one complete set of contract
documents as Project Documents. Keep documents current. Do not permanently cover work until
as-built information is recorded.
B. Record pipe and wiring network alterations. Record work which is installed differently than shown
on the construction drawings. Record accurate reference dimensions, measured from at least two
permanent reference points, of each irrigation system valve, each backflow prevention device,
each sleeve end, and other irrigation components enclosed within a valve box.
C. Prior to Final Review, purchase from the Owner’s Representative a reproducible mylar copy of the
drawings. Using technical drafting pen, duplicate information contained on the project drawings
maintained on site. Label each sheet “Record Drawing”. Completion of the Record Drawings will
be a prerequisite for the Final Review.
Technical Specs - 12
3.12 MAINTENANCE
A. Upon completion of Final Review, maintain irrigation system for duration of 2 years. Make periodic
examinations and adjustments to irrigation system components so as to achieve the most
desirable application of water.
B. Following completion of the Contractor’s maintenance period, the Owner will be responsible for
maintaining the system in working order during the remainder of the guarantee/warranty period, for
performing necessary minor maintenance, for trimming around sprinklers, for protecting against
vandalism, and for preventing damage during the landscape maintenance operation.
3.13 CLEAN-UP
A. Upon completion of work, remove from the site all machinery, tools, excess materials, and rubbish.
END OF PART 3 – EXECUTION
END OF IRRIGATION SECTION
Technical Specs - 13
SECTION 2900
LANDSCAPE PLANTING
PART 1 - GENERAL
1.01 RELATED DOCUMENTS
The general provisions of the contract, including General and Supplementary Conditions and Division
1, General Requirements, apply to the work specified in this Section.
1.02 DESCRIPTION OF WORK
A. Furnish all labor, materials, supplies, equipment, tools and transportation, and perform all
operations in connection with and reasonably incidental to complete installation of the planting and
guarantee as shown on the drawings and as specified herein. The work shall include, but not be
limited to the following:
1. Procurement of all applicable licenses, permits, and fees.
2. Determination of utility locations prior to construction.
3. Site inspection.
4. Planting of trees, shrubs, perennials, and turf installation.
5. Soil Preparation and Fine Grading.
6. Staking and guying of trees.
7. Mulching of all trees and shrubs.
8. Cleanup, inspection, and approval.
9. Guarantee of all plantings.
10. Maintenance.
11. All work of every description mentioned in the Drawings and Specifications and/or Addenda
thereto.
B. Related Work Specified Under Other Sections: Consult all other Sections, determine the extent
and character of related work, and properly coordinate work specified herein with that specified
elsewhere to produce a finished, workmanlike installation.
1.03 PROTECTION OF EXISTING FEATURES
A. Protect all existing site development including, but not limited to, existing buildings, equipment,
underground utilities, walls, walks, roads, materials, trees, etc. Any existing site development
damaged by willful or negligent acts of the Contractor, Sub-Contractor or any of the employees
shall be replaced or repaired at no cost to the Owner and in a manner satisfactory to the Owner’s
Representative before project acceptance is given.
B. The above provision applies to on-site damage as well as to that which may occur to adjacent
properties.
C. Until the project has been accepted, erect and maintain shoring, barricades, guards, warning lights
and lights as necessary or required for the protection of the public, the work and the workers.
1.04 SUBMITTALS
Submit duplicate samples and manufacturer’s guaranteed analysis of the following items and such
other materials as may be required by the Owner’s Representative and obtain written approval there of
Technical Specs - 14
before beginning fabrication or delivery of material to the project site. Finished work shall match
approved samples.
1. Soil amendments and mulch materials.
2. Tree ties and guying materials.
3. Fertilizers
1.05 ANALYTICAL TESTS
Submit 2 copies of an analytical test, performed by certified soil laboratory, demonstrating
compliance with these specifications for the composted manure and peat moss.
1.06 INSPECTIONS
A. Pre-Planting Inspection:
1. All plant materials must be inspected at the place of growth and/or on the project site before
planting commences. Plants shall be inspected for size, variety, condition, defects or injury.
The Owner’s Representative reserves the right to reject unsatisfactory plant material at any
time during the work.
2. Notify the Owner’s Representative of the source of material no later than 30 days after award
of the contract.
3. All fertilizers, pre-mixed backfill mixes, mulches and soil amendments will be inspected at the
site by the Owner’s Representative before they are used in planting operations.
B. Planting Inspections:
1. Owner’s Representative shall inspect the staked location of all trees prior to the planting of
those trees.
2. Owner’s Representative shall inspect container stock with said plants set on the ground at
the proposed locations before digging commences.
C. Pre-Maintenance Inspection:
1. As soon as all planting is completed, the Owner’s Representative upon request of the
Contractor will hold a planting review and preliminary inspection to determine the condition of
the plantings.
2. The Contractor shall have all planting areas free of weeds and neatly cultivated. Irrigation
systems shall be fully operational with all heads properly adjusted. All debris and litter shall
be cleaned up and walkways, curbs and roads shall be cleared of all soil and debris. The
inspection shall not occur until these conditions are met.
3. If, after the inspection, the Owner’s Representative is of the opinion that all work has been
performed as per the contract documents, and that all plant materials are in satisfactory
growing condition, he will give the Contractor written notice of acceptance.
4. Work requiring corrective action in the judgment of the Owner’s Representative shall be
performed within ten (10) days. Corrective work and materials replacement shall be in
accordance with the contract documents, and shall be made by the Contractor at no cost to
the Owner.
D. Final Inspection:
1. At the completion of the two growing season maintenance period, the final inspection
shall be performed.
2. If, after the inspection, the Owner’s Representative is of the opinion that all work has
been performed as per the contract documents, and that all plant materials are in
satisfactory growing condition, he will give the Contractor written notice of acceptance
and completion of the formal maintenance period.
Technical Specs - 15
3. Final approval will not be given until all deficiencies are corrected.
1.07 GUARANTEE
A. Guarantee trees, shrubs, ground covers and other plant material to root, thrive and be free from
defects from any cause for two years, from pre-maintenance inspection to finial approval by the
owner.
B. Any trees or other plant materials that die back and lose the form and size originally specified shall
be replaced, even though they have taken root and are growing after the dieback.
C. Within 15 days of written notification by the Owner, remove and replace all guaranteed plant
materials which, for any reason, fail to meet requirement of guarantee. Replacement planting for
trees shall be done in the spring planting season only, except as approved otherwise.
Replacements shall be made to same specifications required for original materials and shall carry
the same guaranty from the time they are replaced.
D. Plants shall be planted only when weather and soil conditions permit and in accordance with
locally accepted practices, and as approved by the owner's representative.
E. Trees shall be planted in same growing season as they were dug.
END OF PART 1 - GENERAL
Technical Specs - 16
PART 2 - PRODUCTS
2.01 TREES, SHRUBS, AND GROUND COVERS
A. Quantities: Plant material shall be furnished in quantities required to complete work as indicated
on the Drawings and shall be of species, kinds, sizes, etc., specified.
B. Nomenclatures: Plant names listed on Drawings conform to standardized plant names
established by the American Joint Committee on Horticulture Nomenclature, except that for names
not covered therein, the established custom of the nursery trade is followed.
C. Quality: Plants shall be symmetrical and typical for species and variety. Plants shall be sound,
healthy, vigorous, and free from disease and insect pests or their eggs. All plant material shall
conform to the requirements of the Colorado Nursery Act of 1965, Title 35, Article 26, and
CRS1973.
D. Digging, wrapping, and handling: Plants shall be dug and prepared for shipment in a manner that
will not cause damage to branches, shape and future development after planting.
E. Balled and burlapped plants: Shall be nursery grown stock adequately balled with firm, natural
balls of soil in sizes and ratios conforming to the Colorado Nursery Act as cited above. Balls shall
be firmly wrapped with non-treated burlap, secured with wire or jute. Broken balls will not be
accepted. Ponderosa Pine may be collected with root ball sizes in conformance with the Colorado
Nursery Act as cited above.
F. Container grown plants: Shall have been nursery grown in containers and shall have sufficient
roots to hold the entire soil mass together after container removal without being root-bound.
G. Options as to method: If all other requirements are met, a balled and burlapped plant may be s
substituted for a container grown plant.
H. Plant protection: Plants shall be handled so that roots are adequately protected at all times from
drying out and from other injury. Cover balls of balled plants, which cannot be planted within 24
hours from delivery, with mulch or other suitable material. Where possible, store plants in the
shade. Keep all plant roots moist before, during, and after planning.
I. Pruning: Trees shall not be pruned, except by City Forestry staff. Dead and broken shoots should
be pruned out of woody shrub material.
J. Substitutions: Will be allowed only when specified material is proved unavailable and only with
approval of the Owner’s Representative. Proposals will be considered for use of nearest
equivalent size or species and variety with the equitable adjustment to the Contract price.
K. Trees dug and held over from a previous growing season will not be accepted for use.
2.02 SOIL AMENDMENTS/FERTILIZERS/MULCHES
A. Topsoil: imported and on site topsoil (located in stockpile on site) for use in backfill mix. Topsoil
to be a mix of 75% topsoil and 25% composted manure mixed well prior to being placed in median
and in parkway tree pits. Topsoil shall be free of all foreign material and screened and ground to
eliminate clumps larger than 1" in diameter. Submit sample for approval to the City Forestry .
B. Composted Manure: Composted dairy cow: Free from lumps, stones, or other foreign matter.
Free from mineral matter or chemical composition harmful to plant life. Compost shall meet the
following requirements.
Submit analysis of all the requirements listed below.
Technical Specs - 17
C. Peat Moss for annuals and perennials: Free from lumps, stones or other foreign matter. Free
from mineral matter or chemical composition harmful to plant life. Acid reaction of 3 to 5 pH.
Shall contain no less than 60% organic matter by weight on an oven-dry basis. Submit analysis
as required by 1.04.
D. Fertilizers:
1. Tablets for tree and shrub planting - "The Pill" by Agriform with 20-10-5 analysis, 21 gram
size, Osmocote Sierrablend, 9 month slow release or industry equivalent.
2. Fertilizers for grass, shrub and tree planting shall be commercial type of uniform composition,
free flowing, and conforming to the applicable State and Federal laws. Submit
Minimum Stability Indicator
(Respirometry)
Maturity Indicator Expressed as
Ammonia N / Nitrate N Ratio
Maturity Indicator Expressed as
Carbon to Nitrogen Ratio
Maturity Indicator Expressed as
Percentage of Germination / Vigor
Ag Index- Acceptable Range
pH- Acceptable Range
Soluble Salts- Acceptable Range
Testing and Test Report Submittal
Requirements________________________
Chemical Contaminants
_______________________________
Bulk Density, % Inorganic: % Moisture; Particle
Size Distribution; Secondary Nutrients; Trace
Elements; Organic Matter Expressed in
Percentage and Pounds Per CY
____________________________________
Pathogens
Stable
___________________
<6
<18
___________________
N/A
___________________
>10
6.0-8.2
5-10 mmhos/cm
STA/TMECC
Meet or exceed US EPA
Class
A standard, 40 CFR 503.
13, Tables 1 & 3
levels.______________
Must Report
___________________
Meet or exceed US EPA
Class A standard, 40 CFR
503.32 (a)
levels.______________
______
Technical Specs - 18
manufacturers guaranteed analysis as required in 1.03. Guaranteed analysis shall be
designed to conform to amendment requirements given in Part 3, "Execution."
E. Mulch:
1. Bark Mulch: Cedar mulch must be approved by City Parks Division prior to installation.
2.03 SEEDING MATERIALS
A. Grass Seed:
1. Seed shall be and have been tested for purity, germination and freedom from weeds with in
6 months of the date of contract. All seed shall be free of Poa annua, noxious weeds and
shall not exceed 0.1% crop seed. Unless other wise directed by the Owner/ Representative,
seed germination shall equal or exceed 90% and a purity of 85%.
B. Grass Seed Mixtures.
1. 50% Kentucky Bluegrass Varieties will be decided and finalized
Poa pratensis 80-85-0.0.50 based on soil testing results.
30% Chewings Red Fescue
Festuca rubra var.
85 98 0.50
10% Perennial Ryegrass
Lolium perenne
90 98 0.50
10% Redtop Agrostis alba 85 92 1.00
C. Mulch
1. Seed Mulch: Wood cellulose fiber mulch, dyed green, Conwed “Hydro-Mulch 2000 Fiber”
with tacifier, straws, or approved equal.
2. Hay or Straw: Grass hay or cereal grain straw should be uniformly spread at 2 tons per
acre and mechanically crimped into the soil.
3. Erosion Control Fabric: 100% agricultural straw blanket with nonphotodegradable netting
both sides similar to North American Green, 5150 or as otherwise specified.
2.04 MATERIALS FOR STAKING AND GUYING
A. Stakes: Metal T-posts painted dark green or black.
B. Ties: Fabric: Nylon canvas or rubberized cloth straps, 2" x length required.
END OF PART 2 - PRODUCTS
Technical Specs - 19
PART 3 - EXECUTION
3.01 GENERAL
A. Inspection: Examine the substrate in which the work is to be performed. Do not proceed until
unsatisfactory conditions have been corrected.
B. Dimensions: All scaled dimensions are approximate. Before proceeding with any work, carefully
check and verify all dimensions and quantities and immediately inform the Owner’s
Representative of any discrepancy between the drawings and/or specifications and actual
conditions.
C. Coordination: Coordinate work with other trades to insure proper sequencing of construction.
3.02 SOIL PREPARATION
A. Grades have been established under work of another Section to within 1", plus or minus, of
required finished grades. Verify that grades are within 1" plus or minus, of required finished
grades. Notify the Owner’s Representative prior to commencing soil preparation work if existing
grades are not satisfactory, or assume responsibility for conditions as they exist.
B. Weed and debris removal: All ground areas to be planted shall be cleaned of all weeds and
debris prior to any soil preparation or grading work. Weeds and debris shall be disposed of off the
site.
C. Contaminated soil: Do not perform any soil preparation work in areas where soil is contaminated
with cement, plaster, paint or other construction debris. Bring such areas to the attention of the
Owner’s Representative and do not proceed until the contaminated soil is removed and replaced.
Soil contaminated by chemical herbicides in any planting areas shall be removed to a depth of 12"
and replaced with clean herbicide-free topsoil.
D. Moisture Content: Soil shall not be worked when moisture content is so great that excessive
compaction will occur, nor when it is so dry that excessive dust will form in the air or that clods will
not break readily. Water shall be applied, if necessary, to bring soil to an optimum moisture
content for tilling and planting.
3.03 SOIL CONDITIONING MEDIANS & PARKWAYS
A. Median areas shall be excavated below the base of the splash block 24" and then filled with the
specified mix (2.02a). The subgrade will be scarified to a 6" depth parallel to the way the median
runs, to allow for drainage and root movement. The specified topsoil and compost mix shall be
thoroughly mixed prior to placement and filled to within 1 1/2" of the top edge of the splash block.
The soil in the medians shall be graded to a level surface
B. Parkways shall be toughly cultivated 8” deep breaking up all clods to 1” largest dimension or less.
Compost shall be applied at 3cubic yards per 1000 square feet and toughly mixed in to the top 8”
of the parkway soil.
3.04 FINE GRADING
When weeding, soil preparation, and soil conditioning have been completed and soil has been
thoroughly water settled, all planting areas should be smooth-graded, ready for placement of plant
materials.
A. Grades: Finish grades shall conform to site grading plans and produce a smooth even surface
without abrupt changes. Minor adjustments of finish grades shall be made at the direction of the
Owner’s Representative, if required.
Technical Specs - 20
B. Drainage: All grades shall provide for natural runoff of water without low spots or pockets. Flow-
line grades shall be accurately set and shall not be less than 2% gradient wherever possible.
C. Shrub Areas: Finished grades shall be 1-1/2" below top of adjacent pavement, edging, curbs, or
wall, unless otherwise indicated on the Drawings.
D. Slopes: Tops and toes of all slopes shall be rounded to produce a gradual and natural-appearing
transition between relatively level areas and slopes.
3.05 GROUND COVER, ANNUAL AND PERENNIAL BEDS
Excavate areas to be planted with material smaller than 1-gallon size to a depth of six (8") inches and
backfill with the following mix.
1. 80% on-site topsoil by volume (from Owner's stockpile).
2. 20% peat moss by volume.
3. Five (5) pounds bone meal per cubic yard of backfill.
The specified backfill materials shall be pre- mixed, then turned several times with a front end loader to
a uniform, evenly blended consistency, free of all pockets of unblended material and any clods or
stones greater than one (1") inch in diameter. Pre-mixed back-fill mix shall be inspected per 1.06A,
"Pre-Planting Inspections."
3.06 SHRUB AND TREE PLANTING
A. Planting Pits:
1. Locate planting holes per planting plans bringing any conflict with underground utility lines to
the attention of the Owner’s Representative. Locations for holes shall be according to 1.06B,
"Planting Inspections."
2. Excavate holes to be the same depth as the root ball and two times the diameter of the root
ball wide.
3. The sides of the holes shall be roughened to remove any compacting or "glazing" caused by
the digging operation. The bottom of the hole shall be loosened to a minimum depth of six
(6") inches. Mix loosened soil with specified backfill to blend soil types.
4. Fill a random sample of holes with water as directed the City Forester and allow to drain
completely. Contractor should notify City Forester if a pit does not drain in a satisfactory
time, then contractor should correct drainage problem by using a PVC drain or a gravel sump
shall be installed.
5. Dispose of excavated soil off the site at no cost to the Owner.
B. Backfilling - Tree and shrub planting pits shall be backfilled with the following mix:
1. 75% on-site topsoil by volume (from Owner's stockpile) thoroughly mixed with 25% compost
(2.02 A + B).
C. Planting
1. General - Do not install plant materials until all construction work has been completed and
sprinkler systems have been installed and tested. Planting areas shall have been graded
and prepared as herein specified and shall have been approved by the Landscape Architect.
2. Carefully remove stock from containers to avoid breaking the root ball. Do not lift or handle
container plants by tops, stems, or trunks at any time.
3. Fertilize trees and shrubs by placing 21 gram fertilizer tablets three (3") inches laterally and
three (3") inches top of root ball as follows: 1 for 1-gallon containers, 3 for 5-gallon containers
and 5 for balled and burlapped material.
4. Remove wire baskets from root balls. Untie and lay back burlap from root ball on balled and
burlapped material.
5. Backfill entire hole with backfill mixture to grade and water thoroughly to eliminate all air
pockets without packing the soil. Allow soil to settle from watering. Add backfill mixture as
Technical Specs - 21
required.
6. Flatgrown plant material - Install plants at spacing indicated on the drawings. Plant in
staggered rows, evenly spaced. Dig holes large enough to allow for spreading of roots.
Place plants to root system lies free without doubling. Firm soil around roots to eliminate air
pockets. Broadcast controlled release fertilizer over the entire planting area at the rate of 20
pounds per 1000 square feet of area.
3.07 MULCHING
A. All planting beds, medians and parkway tree with 4’ diameter grass free tree ring shall be
mulched with a four (4") inch layer of cedar mulch.
3.08 TREE STAKING AND GUYING
A. Double stake all trees. Set stakes in line with median or parkway. Leave straps loose enough to
allow a minimum of 3" lateral movement.
3.09 SEEDING NEW LANDSCAPE
A. Submit in accordance with the Federal Seed Act, seed vendor’s certified statement for each grass
seed mixture required, stating botanical and common name, percentage by weight, and
percentage of purity, germination and weed seed for each grass seed species.
B. Prior to turf construction assure irrigation system is fully operational and properly adjusted.
C. Perform seeding work only at seasonal times, which will provide optimum growing conditions. Do
not seed after September 15 nor before all frost is out of the ground.
D. Seeding New Lawns
1. Seed shall be spread evenly at the rate of (specify rate/5-7 lbs for Blue, P. Rye, Fine Fescue-
7-9 lbs for tall Fescue.), when winds are calm, using a Brillion seeder or approve equal. If
hydro mulch is specified, seed shall be applied separately, not mixed in the mulch.
2. Seed mulch shall consist of and applied at the rate of (To Be Determined At Time Of
Seeding) per 1000 ft. sq. Mulch shall be irrigated to settle and reduce blowing on the same
day as it was applied.
3. Do not use wet seed or seed that is moldy or otherwise damaged in transit or storage.
4. Sow lawn grass seed using mechanical drill type (Brillion) seeding machine for slopes 4:1
and flatter and for slopes steeper than 4:1 sow seed with hydroseeder. Distribute seed
evenly over entire area by sowing equal quantity in two directions at right angles to each
other.
5. If hydro mulch is required, apply seeds separately, mulch. Do not mix seed with mulch.
6. Sow native grass seed areas using hydraulic seeding equipment suited to conditions and
capable of uniform sowing of seed and coverage of mulch.
7. For areas inaccessible to seeding machine or if its use is not required, rake seed lightly into
top 0.125” of soil, roll lightly, and water with a fine spray. Cover with approximately 0.5” layer
of peat mulch.
8. Protect against erosion by spreading specified lawn mulch hydraulically at rate of not less
than 46 lbs. per 100 sq. ft. Apply within 24 hours of seeding.
9. Protect seeded slopes (greater than 2:1 vertical) against erosion with erosion control fabric or
other methods acceptable to the Owner’s/Representative. Secure netting with staples.
10. Install erosion control fabric around rotary pop-up heads in seeded areas in a 4’x4’ square
centered on each head. Pin or staple securely at corners.
11. Drill seeding (Brillion) is recommended if accessible. Slopes can be hydroseeded.
Hydromulch: Wood cellulose fiber, dyed green, should be applied at 1500-2500#/Acre with
organic tackifier (Alpha Plantago) at 150-200#/Acre or Conwed “Hydro-Mulch 2000 Fiber” at
same rate. Material rates should be adjusted according to slope and erosion conditions.
Technical Specs - 22
Hose work may be required in narrow areas, where there is a lot of landscape or seeding is
adjacent to building.
3.10 TWO GROWING SEASON MAINTENANCE PERIOD
A. Continuously maintain all plantings in areas included in the Contract from the beginning of
Contract work, during the progress of work, and for two (2) full growing seasons after pre
maintenance inspection until final approval of all Contract work by the Owner.
B. Scope:
1. New plantings.
2. Existing plantings within the construction area.
3. Continuous operations of watering, weeding, cultivating, mowing, trimming, edging, rolling,
fertilizing, spraying, insect, pest, fungus, and rodent control, and any other operations to
assure good normal health, and attractive well maintained appearance.
Weed Control:
a. Apply appropriate herbicide(s) in accordance with manufacturer's suggested retail
rate(s) to control weeds. Herbicide application must comply with all requirements
herbicide/pesticide applicators license, including suitable warning/signing following
application. Herbicide applications and chemicals to be used will be approved by the
City Forester. Extreme caution must be used when applying herbicides near any tree,
shrub or groundcover.
b. Disease and Insect Control: Apply fungicides and insecticides as required to control
diseases and insects. A licensed applicator must perform this work in accordance with
state law requirements.
c. Watering: Contractor shall be responsible for watering of landscape areas to insure
performance under this Section. Apply the amount of water necessary to maintain
plants in a healthy condition until the end of the two year warranty period.
d. Protection:
i) Provide sufficient barriers and signage notifying the public to keep off newly planted
areas.
ii) Work under this Section shall include complete responsibility for maintaining
adequate protection for all areas. Any damaged areas shall be repaired at no
additional expense to the Owner.
4. Mow grass in sodded areas to maintain 2-to 3-inch height until final acceptance of project
and turnover to City. Mow at a frequency that removes less than 1/3 the length of grass
blade at any one mowing.
5. Apply custom blend of fertilizer in split applications in early fall and late spring. Two-thirds
of the nitrogen should be applied in the fall and one-third in the spring.
6. Planting Bed and Mulch Surface Maintenance Requirements
a. Mulch all tree plantings four inches deep with cedar mulch, unless otherwise indicated
on the Drawings. Adding mulch during maintenance period as directed by the city
Forester.
b. Remove all weed growth on a monthly basis, including those growing in cracks and
curbs.
7. Maintenance for Trees and Shrubs
a. Water all trees and shrubs to insure optimal growth and establishment during the two
growing season maintenance period as required by this Section. New trees should
receive two inches per week of irrigation during the first growing season applied over
the root system. Normal turf irrigation is generally adequate (one inch per week) for
the second growing season. Irrigation rates should be adequate for new trees'
establishment even when that is greater than water demand for turf. It is the
contractor's duty to determine and supply the water needs of trees and shrubs.
b. Inspect new plantings on a regular basis.
c. Remove tree wrap the next spring season after planting.
d. Re-mulch trees on an annual basis to maintain a four-inch deep mulch cover.
Technical Specs - 23
Maintain tree rings in turf zones as weed and grass free.
e. Insect and disease levels shall be monitored and control measured implemented
when necessary following IPM practices. Check with Assistant City Forester prior to
implementing any control measures.
f. Remove all tree stakes and guy wires from trees after the first full year of
maintenance.
g. Fertilizing: In addition to fertilizing of trees, shrubs, ground covers, and lawns herein
specified, furnish and apply any additional fertilizers necessary to maintain plantings in
a healthy, green, vigorous growing condition during the maintenance period. Do not
over apply fertilizer.
8. Inspection:
a. The Contractor shall notify the Owner's Representative prior to fertilizing, and
spraying operations.
b. The Owner's Representative shall perform periodic inspections during the growing
season of the site with the Contractor to determine that maintenance is sufficient to
insure a healthy condition of the landscape work. A final inspection will be held at the
end of the two growing season maintenance period.
c. The Landscape Contractor shall be available to meet on site with the Owner's
Representative at any time within 24 hours notice during the construction,
establishment, or maintenance period.
d. Replacements: Immediately replace any plant materials that die or are damaged.
Lawns that do not grow shall be resodded. Replacements shall be made to the
Specifications as required for original plantings.
3.11 CLEAN UP
A. Remove all cans, surplus materials, and other debris from site. Neatly dress and finish all
planting areas. Flush walks, paved areas, and the like, clean to the satisfaction of the Owner’s
Representative. If needed storm drain inlets will be cleaned from debris flushed into the system
from cleaning of the constructed area.
B. Rinse foliage of all plant materials within the construction area as often as necessary to keep the
foliage free from dust generated by the work of this contract.
END OF PART 3 – EXECUTION
END OF PLANTING