South Park Irrigation and Slope Improvements PLANTING IRRIGATION Project 23-006 328400 - 1
October 13, 2023
SECTION 32 8400 - PLANTING IRRIGATION
PART 1 - GENERAL
1.1 SUMMARY
A. It is the intent of the specifications and drawings that the finished system is complete in every respect and shall be ready for operation satisfactory to the City.
B. The work shall include all materials, labor, services, transportation, and equipment necessary to perform the work as indicated on the drawings, in these specifications, and as necessary to complete the contract.
1.2 CONSTRUCTION DRAWINGS
A. Due to the scale of the drawings, it is not possible to indicate all offsets, fittings, sleeves, etc. which may be required. Carefully investigate the structural and finished conditions affecting all of the work and plan the work accordingly, furnishing such fittings, etc. as may be required to meet such conditions. Drawings are generally diagrammatic and indicative of the work to be installed. The work shall be installed in such a manner as to avoid conflicts between irrigation systems, planting, and architectural features.
B. Work called for on the drawings by notes or details shall be furnished and installed whether or not specifically mentioned in the specifications. When an item is shown on the plans but not shown on the specifications or vice versa, it shall be deemed to be as shown on both. The Landscape Architect shall have final authority for clarification.
C. Do not willfully install the irrigation system as shown on the drawings when it is obvious in the field that obstructions, grade differences or discrepancies in area dimensions exist that might not have been considered in engineering. Such obstructions or differences should be brought to the attention of the Landscape Architect as soon as detected. In the event this notification is not performed, the Contractor shall assume full responsibility for any revision necessary.
1.3 QUALITY ASSURANCE
A. Provide at least one English speaking person who shall be present at all times during execution of this portion of the work and who shall be thoroughly familiar with the type of materials being installed and the manufacturer's recommended methods of installation and who shall direct all work performed under this section.
B. Manufacturer's directions and detailed drawings shall be followed in all cases where the manufacturer of articles used in this contract furnish directions covering points not shown in the drawings and specifications.
C. All local, municipal, and state laws, rules and regulations governing or relating to any portion of this work are hereby incorporated into and made a part of these specifications, and their
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provisions shall be carried out. Anything contained in these specifications shall not be construed to conflict with any of the above rules and regulations of the same. However, when these specifications and drawings call for or describe materials, workmanship, or construction of a better quality, higher standard, or larger size than is required by the above rules and regulations, the provisions of these specifications and drawings shall take precedence.
D. All materials supplied for this project shall be new and free from any defects. All defective materials shall be replaced immediately at no additional cost to City.
E. Secure the required licenses and permits including payments of charges and fees, give required notices to public authorities, verify permits secured or arrangements made by others affecting the work of this section.
1.4 SUBMITTALS
A. Water Pressure Test
1. After award of contract and before any irrigation system materials are ordered from suppliers or delivered to the job site, submit to the City a written verification of the existing water pressure on the project at each of the points of connection shown.
2. The water pressure test shall be performed to measure the dynamic water pressure at the point of connection at the maximum flow rate of the proposed irrigation system as shown on the point of connection note. Dynamic water pressure is when water is flowing through the point of connection. Static water pressure readings, water is not flowing, are not acceptable.
3. Written dynamic water pressure test confi
letterhead and include the flow rate during the test, the recorded water pressure, the date of the test and the time of the test.
B. Material List:
1. After award of contract and before any irrigation system materials are ordered from suppliers or delivered to the job site, submit to the City a complete list of all irrigation system materials, or processes proposed to be furnished and installed as part of this contract.
2. The submittals materials list shall include the following information:
a.
telephone number, submittal date and submittal number.
b. An index sheet showing the item number (i.e. 1,2,3, etc.); an item description (i.e. irrigation head)
number (i.e. I-40-ADV/36V); and the page(s) in the submittal set that contain the catalog cuts.
c. The catalog cuts shall be one or two pages copied from the most recent that indicate the product submitted. Do not submit parts lists, exploded diagrams, price lists or other extra information. d.
model number. The item model number, all specified options and specified sizes shall be circled on the catalog cuts.
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e. Submittals for equipment indicated on the legend without manufacturer names, or and/or other certifications as indicated in these specifications.
3. Submittal materials list format requirements:
. Submittals shall be provided as one complete package for the project. Multiple partial submittals will not be reviewed.
a. Submittal package shall be stapled or bound in such a way as to allow for disassembly for review processing. Submittals shall not have tabs, tab sheets, spiral binding, or any other type of binding that will interfere with automated copying of submittals.
b. Submittal package shall have all pages numbered in the lower right hand corner.
Page numbers shall correspond with submittal index.
c. Re-submitted packages must be revised to include only the equipment being resubmitted. Equipment previously reviewed and accepted shall not be re-submitted in the materials list/index sheet or in the catalog cut sheet package.
C. Substitutions: If the Contractor wishes to substitute any equipment or materials for those equipment or materials listed on the irrigation drawings and specifications, they may do so by providing the following information to the Landscape Architect for approval.
1. Provide a written statement indicating the reason for making the substitution.
2. Provide catalog cut sheets, technical data, and performance information for each substitute item.
3. Provide in writing the difference in installed price if the item is accepted.
D. The Landscape Architect will allow no substitutions without prior written acceptance.
E. Manufacturer's warranties shall not relieve the Contractor of his liability under the guarantee.
Such warranties shall only supplement the guarantee.
F. The Landscape Architect will not review the submittal package unless provided in the format described above.
1.5 EXISTING CONDITIONS
A. Verify and be familiar with the locations, size, and detail of points of connection provided as the source of water, and electrical supply connection to the irrigation system.
B. Irrigation design is based on the available dynamic water pressure shown on the drawings.
Verify water on the project prior to the start of construction. Should a discrepancy exist, notify the Landscape Architect prior to beginning construction.
C. Prior to cutting into the soil, locate all cables, conduits, sewer septic tanks, and other utilities as are commonly encountered underground and take proper precautions not to damage or disturb such improvements. If a conflict exists between such obstacles and the proposed work, promptly notify the Landscape Architect who will arrange for relocations. Proceed in the same manner if a rock layer or any other such conditions are encountered.
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D. Protect all existing utilities and features to remain on and adjacent to the project site during construction. Repair all damage resulting from the operations or negligence at no additional cost.
E. Install required sleeving as shown on the plans.
F. Verify and be familiar with the existing irrigation systems in areas adjacent to and within the Project area of work.
G. Protect all existing irrigation systems, in areas adjacent to and within the project area of work, from damage due to operations.
H. Notify City
Provide 48-hour notice, prior to turning off or modifying any existing irrigation system.
I. Repair or replace all existing irrigation systems, in areas adjacent to and within the project area of work, damaged by the construction of this project. Adjacent irrigation systems shall be made completely operational and provide complete coverage of the existing landscaped areas.
All repairs shall be complete to the satisfaction of the City
1.6 INSPECTIONS
A. Permit the Landscape Architect and City's representative to visit and inspect at all times any part of the work and shall provide safe access for such visits.
B. Where the specifications require work to be tested by the Contractor, it shall not be covered over until accepted by the Landscape Architect or City's representative. The Contractor shall be solely responsible for notifying the Landscape Architect and/or City a minimum of 48 hours in advance, where and when the work is ready for testing. Should any work be covered without testing or acceptance, it shall be, if so ordered, uncovered at no additional cost.
C. Inspections will be required for the following at a minimum:
1. Coverage test of irrigation system. Test shall be performed prior to any planting.
2. Final inspection prior to start of maintenance period.
3. Final acceptance prior to turnover.
D. Site observations and testing will not commence without the field record drawings as prepared by the Contractor. Record drawings must be complete and up to date for each site visit.
E. Work that fails testing and is not accepted will be retested. Hourly rates and expenses of the Landscape Architect and City's representative for re-inspection or retesting will be paid by the Contractor at no additional cost.
1.7 STORAGE AND HANDLING
A. Use all means necessary to protect irrigation system materials before, during, and after installation and to protect the installation work and materials of all other trades. In the event of
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damage, immediately make all repairs and replacements necessary to the acceptance of the Landscape Architect and City at no additional cost.
B. Exercise care in handling, loading, unloading, and storing plastic pipe and fittings under cover until ready to install. Transport plastic pipe only on a vehicle with a bed long enough to allow the pipe to lay flat to avoid undue bending and concentrated external load.
1.8 CLEANUP AND DISPOSAL
A. Dispose of waste, trash, and debris in accordance with applicable laws and ordinances and as prescribed by authorities having jurisdiction. Bury no such waste material and debris on the site. Burning of trash and debris will not be permitted. Remove and dispose of rubbish and debris generated by this work and works at frequent intervals or when ordered to do so by the City's representative.
B. At the time of completion, the entire site will be cleared of tools, equipment, rubbish and debris which shall be disposed of off-site in a legal disposal area.
1.9 TURNOVER ITEMS
A. Record Drawings:
1. Record accurately on one set of drawings all changes in the work constituting departures from the original contract drawings and the actual final installed locations of all required components as shown below.
2. The record drawings shall be prepared to the satisfaction of the City. Prior to final inspection of work, submit record drawings to the Landscape Architect.
3. All record drawings shall be prepared using AutoCAD 2014 drafting software and the original irrigation drawings as a base. No manual drafted record drawings shall be acceptable. The Contractor may obtain digital base files from the Landscape Architect.
4. Prior to final inspection of work, submit record drawings plotted onto vellum sheets for review by the Landscape Architect. After acceptance by the Landscape Architect re-plot the record drawings onto reproducible Mylar sheets. Provide record drawing information on a digital AutoCAD Release 2014 drawing file. All digital files shall be provided on a digital memory stick clearly marked with the project name, file descriptions and date.
a. Record drawing information and dimensions shall be collected on a day-to-day basis during the installation of the pressure mainline to fully indicate all routing locations and pipe depths. Locations for all other irrigation equipment shall be collected prior to the final inspection of the work.
b. Two dimensions from two permanent points of reference such as buildings, sidewalks, curbs, streetlights, hydrants, etc. shall be shown for each piece of irrigation equipment shown below. Where multiple components are installed with no reasonable reference point between the components, dimensioning may be made to the irrigation equipment. All irrigation symbols shall be clearly shown matching the irrigation legend for the drawings. All lettering on the record drawings shall be minimum 1/8 inch in size.
5. Show locations and depths of the following items:
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a. Point of connection (including water POC, pressure regulators, master control valves, flow sensors, etc.).
b. Isolation valves.
c. Automatic remote control valves (indicate station number and size). d. Quick coupling valves.
e. Routing of control wires where separate from irrigation mainline. f. Irrigation controllers (indicate controller number and station count). g. Related equipment (as may be directed).
B. Controller Charts:
1. Provide one controller chart for each automatic controller. Chart shall show the area covered by the particular controller. The areas covered by the individual control valves shall be indicated using colored highlighter pens. A minimum of six individual colors shall be used for the controller chart unless less than six control valves are indicated.
2. Landscape Architect must approve record drawings before controller charts are prepared.
3. The chart is to be a reduced copy of the actual "record" drawing. In the event the controller sequence is not legible when the drawing is reduced, it shall be enlarged to a readable size.
4. When completed and approved, the chart shall be hermetically sealed between two pieces of plastic, each piece being a minimum 20 mils in thickness.
C. Equipment:
1. Supply as a part of this contract the following items:
a. One (1) 60-inch gate valve keys for operation of
gate valves.
b. Two (2) keys for each automatic controller.
c. One (1) valve quick coupler key with a 3/4" bronze hose bib, bent nose type with hand wheel and three (3) coupler lid keys.
d. Two (2) box cover keys or wrenches.
e. Two (2) extra rotor heads.
f. -up sprinkler bodies.
g. pop-up sprinkler bodies.
h. Five (5) extra bubbler heads of each size and type.
2. The above equipment shall be turned over to City's authorized representative at the final inspection.
1.10 COMPLETION
A. At the time of the pre-maintenance period inspection, the Landscape Architect and/or City's representative will inspect the work, and if not accepted, will prepare a list of items to be completed by the Contractor. Punch list to be checked off by Contractor and submitted to Landscape Architect or City e prior to any follow-up meeting. This checked off list to indicate that all punch list items have been completed. At the time of the postmaintenance period or final inspection the work will be re-inspected and final acceptance will be in writing by the Landscape Architect and/or City's authorized representative.
B. The City's authorized representative shall have final authority on all portions of the work.
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C. Any settling of trenches which may occur during the one-year period following acceptance shall be repaired to the City's satisfaction by the Contractor without any additional expense to the City. Repairs shall include the complete restoration of all damage to planting, paving or other improvements of any kind as a result of the work.
1.11 GUARANTEE
A. The entire irrigation system, including all work done under this contract, shall be unconditionally guaranteed against all defects and fault of material and workmanship, including settling of backfilled areas below grade, for a period of one (1) year following the filing of the Notice of Completion.
B. Should any problem with the irrigation system be discovered within the guarantee period, it shall be corrected by the Contractor at no additional expense to City within ten (10) calendar days of receipt of written notice from City. When the nature of the repairs as determined by the City constitute an emergency (i.e. broken pressure line) the City may proceed to make repairs at the Contractor's expense. Any and all damages to existing improvement resulting either from faulty materials or workmanship, or from the necessary repairs to correct same, shall be repaired to the satisfaction of the City by the Contractor, all at no additional cost to the City.
C. Guarantee shall be submitted on Contractors own letterhead as follows:
GUARANTEE FOR IRRIGATION SYSTEM
We hereby guarantee that the irrigation irrigation system we have furnished and installed is free from defects in materials and workmanship, and the work has been completed in accordance with the drawings and specifications, ordinary wear and tear and unusual abuse, or neglect excepted. We agree to repair or replace any defective material during the period of one year from date of filing of the Notice of Completion and also to repair or replace any damage resulting from the repairing or replacing of such defects at no additional cost to the City. We shall make such repairs or replacements within 10 calendar days following written notification by the City. In the event of our failure to make such repairs or replacements within the time specified after receipt of written notice from City, we authorize the City to proceed to have said repairs or replacements made at our expense and we will pay the costs and charges therefore upon demand.
PROJECT NAME:
PROJECT LOCATION:
CONTRACTOR NAME:
ADDRESS:
TELEPHONE:
SIGNED:
DATE:
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PART 2 - MATERIALS
2.1 SUMMARY
A. Use only new materials of the manufacturer, size and type shown on the drawings and specifications. Materials or equipment installed or furnished that do not meet Landscape Architect's or City's standards will be rejected and shall be removed from the site at no additional cost.
2.2 PIPE
A. Pressure supply lines downstream of backflow prevention unit shall be Class 315 solvent weld PVC pipe conforming to ASTM D2241.
B. Non-pressure lines 3/4 inch in diameter and larger downstream of the remote control valve shall be Schedule 40 solvent weld PVC pipe conforming to ASTM D1785.
C. Sleeves shall be Schedule 40 solvent weld PVC pipe conforming to ASTM D1785.
D. All PVC piping shall be purple in color and carry appropriate recycled / reclaimed water warnings imprinted onto the pipe in black ink.
2.3 PLASTIC PIPE AND FITTINGS
A. Pipe shall be marked continuously with manufacturer's name, nominal pipe size, schedule or class, PVC type and grade, National Sanitation Foundation approval, Commercial Standards designation, and date of extrusion.
B. All plastic pipe shall be extruded of an improved PVC virgin pipe compound in accordance with ASTM D1785.
C. All solvent weld PVC fittings shall be standard weight Schedule 40 (and Schedule 80 where specified on the irrigation detail sheet, all mainline fittings shall be Schedule 80 PVC) and shall be injection molded of an improved virgin PVC fitting compound. Slip PVC fittings shall be the "deep socket" bracketed type. Threaded plastic fittings shall be injection molded. All tees and ells shall be side gated. All fittings shall conform to ASTM D2464 and ASTM D2466.
D. All threaded nipples shall be standard weight Schedule 80 with molded threads and shall conform to ASTM D1785.
E. All solvent cementing of plastic pipe and fittings shall be a two-step process, using primer and solvent cement applied per the manufacturer's recommendations. Cement shall be of a fluid consistency, not gel-like or ropy. Solvent cementing shall be in conformance with ASTM D2564 and ASTM D2855.
F. When connection is plastic to metal, female adapters shall be hand tightened, plus one turn with a strap wrench. Joint compound shall be non-lead base Teflon paste, tape, or equal.
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2.4 VALVES
A. Gate Valves:
1. Gate valves shall be of the manufacturer, size, and type indicated on the drawings.
2. Gate valves shall be constructed of an epoxy coated ductile iron body, gate, bonnet and stem. Gate valves shall have bell x bell connections.
3. Gate valves shall have a minimum working pressure of not less than 150 PSI and shall conform to AWWA standards.
B. Quick Coupler Valves:
1. Quick coupler valves shall be of the manufacturer, size, and type indicated on the drawings.
2. Quick coupler valves shall be brass with a wall thickness guaranteed to withstand normal working pressure of 150 psi without leakage. Valves shall have 1 opening at base, with two-piece body. Valves to be operated only with a coupler key, designed for that purpose. Coupler key is inserted into valve and a positive, watertight connection shall be made between the coupler key and valve.
3. Quick coupler valve shall have a purple colored, locking vinyl lid.
4. Quick couplers shall be installed with a manufactured PVC and brass swing joint of the manufacturer, size, and type indicated on the drawings.
C. Master Control Valves:
1. Master control valves shall be of the manufacturer, size, and type indicated on the drawings.
2. Master control valves shall be electrically operated.
3. Master control valve shall be normally open type.
4. Provide Christy's valve ID tags for each master control valve .
D. Flow Sensors:
1. Flow sensors shall be of the manufacturer, size, and type indicated on the drawings.
2. Provide Christy's valve ID tags for each
E. Automatic Control Valves:
1. Automatic control valves shall be of the manufacturer, size, and type indicated on the drawings.
2. Automatic control valves shall be electrically operated.
3. Provide Christy's valve ID tags for each remote control valve with valve number.
4. Automatic control valves shall be installed with PVC manifold assemblies of the manufacturer, size, and type indicated on the drawings.
F. Mainline Air Release Valve:
1. Mainline air release valve shall be of the manufacturer, size, and type indicated on the drawings.
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2. Components of the mainline air release valve shall be of the manufacturer, size, and type indicated on the drawings.
2.5 VALVE BOXES
A. Valve boxes shall be of the manufacturer, size, color, and type indicated on the drawings.
B. The cover and box shall be capable of sustaining a load of 1,500 pounds.
C. Valve box extensions shall be by the same manufacturer as the valve box.
D. The plastic irrigation valve box cover shall be an overlapping type.
E. The valve boxes shall be secured with a hexagon head bolt, washer and not locking kit of the manufacturer indicated on the drawings.
F. Master control valve, flow sensor, air release valve, and automatic control valve boxes shall be rectangular size. Valve box covers shall be marked or
"RCV" with the valve identification number "heat branded" onto the cover in 1 inch high letters / numbers.
G. Gate valve, and quick coupler valve boxes shall be 10" circular size. Valve box covers shall be marked with G "QCV" "heat branded" onto the cover in 1 inch high letters.
2.6 AUTOMATIC CONTROLLER
A. Automatic controller shall be of the manufacturer, size, and type indicated on the drawings.
B. Automatic controller shall be a SMART controller capable of automatic programming adjustment based on weather data.
C. Controller enclosure shall be of the manufacturer, size, and type indicated on the drawings.
D. Controller shall be grounded according to local codes using equipment of the manufacturer, size, and type indicated on the drawings; or as required by local codes and ordinances.
E. Rain sensor shall be of the manufacturer, size, and type indicated on the drawings.
2.7 ELECTRICAL
A. All electrical equipment shall be NEMA Type 3, waterproofed for exterior installations.
B. All electrical work shall conform to local codes and ordinances.
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2.8 LOW VOLTAGE CONTROL WIRING
A. Remote control wire shall be direct-burial AWG-UF type, size as indicated on the drawings, and in no case, shall the conductor size be smaller than 14 gauge.
B. Connections shall of the manufacturer, size, and type indicated on the drawings.
C. Controller ground wires shall be green in color or bare copper and in no case smaller than 6 gauge.
D. All wire splices shall be made using U.L. Listed (for direct burial) waterproof wire connections of the manufacturer, size, and type indicated on the drawings.
2.9 IRRIGATION SPRINKLER HEADS AND BUBBLERS
A. Irrigation sprinkler heads and bubbler heads shall be of the manufacturer, size, type, operating pressure, and discharge rate indicated on the drawings.
B. Irrigation sprinkler heads and bubblers shall be installed with manufactured swing joints of the manufacturer, size, and type indicated on the drawings.
C. Irrigation sprinkler heads and bubblers shall be used as indicated on the drawings.
2.10 MISCELLANEOUS EQUIPMENT
A. Landscape Fabric:
1. Landscape fabric for valve box assemblies shall be 5.0- oz. weight woven polypropylene weed barrier. Landscape fabric shall have a burst strength of 225 PSI, a puncture strength of 60 lbs. and capable of water flow of 12 gallons per minute per square foot.
2. Type: DeWitt Pro 5 Weed Barrier or approved equal.
B. Equipment such as unions, rebar stakes, stainless steel clamps, gravel bedding, and brick supports shall be the size and type indicated on the drawings and submitted for approval.
PART 3 - EXECUTION
3.1 SITE CONDITIONS
A. Inspections:
1. Prior to all work of this section, carefully inspect the installed work of all other trades and verify that all such work is complete to the point where this installation may properly commence.
2. Verify that irrigation system may be installed in strict accordance with all pertinent codes and regulations, the original design, the referenced standards, and the manufacturer's recommendations.
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B. Discrepancies:
1. In the event of discrepancy, immediately notify the Landscape Architect.
2. Do not proceed with installation in areas of discrepancy until all discrepancies have been resolved.
C. Grades:
1. Before starting work, carefully check all grades to determine that work may safely proceed, keeping within the specified material depths with respect to finish grade.
2. Final grades shall be accepted by the Engineer before work on this section will be allowed to begin.
D. Field Measurements:
1. Make all necessary measurements in the field to ensure precise fit of items in accordance with the original design. Coordinate the installation of all irrigation materials with all other work.
2. All scaled dimensions are approximate. Check and verify all size dimensions prior to proceeding with work under this section.
3. Exercise extreme care in excavating and working near existing utilities. Contractor shall be responsible for damages to utilities, which are caused by their operations or neglect.
E. Diagrammatic Intent:
1. The drawings are essentially diagrammatic. The size and location of equipment and fixtures are drawn to scale where possible. Provide offsets in piping and changes in equipment locations as necessary to conform to structures and to avoid obstructions or conflicts with other work at no additional cost.
F. Layout:
1. Prior to installation, stake out all location of large radius rotor irrigation heads, valves, and automatic controller.
2. Layout irrigation system and make minor adjustments required due to differences between site and drawings. Where piping is shown on drawings under paved areas, but running parallel and adjacent to planted areas, install the piping in the planted areas.
G. Water Supply:
1. Connections to, or the installation of, the water supply shall be at the locations shown on the drawings. Minor changes caused by actual site conditions shall be made at no additional cost.
H. Electrical Service:
1. Connections to the electrical supply shall be at the locations shown on the drawings.
Minor changes caused by actual site conditions shall be made at no additional cost.
2. Make final electrical connections to the irrigation controller. Electrical power source to controller locations shall be provided by others.
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3. Contractor shall make electrical connections to the irrigation controller.
3.2 TRENCHING
A. Excavations shall be straight with vertical sides, even grade, and support pipe continuously on bottom of trench. Trenching excavation shall follow layout indicated on drawings to the depths below finished grade and as noted. Where lines occur under paved area, these dimensions shall be considered below subgrade.
B. Provide minimum cover of 24 inches for pressure supply lines.
C. Provide minimum cover of 18 inches for control wires.
D. Provide minimum cover of 24 inches for sleeves below pedestrian paving.
E. Provide minimum cover of 36 inches for sleeves below vehicular travel ways.
F. Provide minimum cover of 12 inches for non-pressure lateral lines.
G. Pipes installed in a common trench shall have a 4-inch minimum space between pipes.
3.3 BACKFILLING
A. Backfill material on all lines shall be the same as adjacent soil free of debris, litter, and rocks over 1/2 inches in diameter.
B. Backfill shall be tamped in 4-inch layers under the pipe and uniformly on both sides for the full width of the trench and the full length of the pipe. Backfill materials shall be sufficiently damp to permit thorough compaction, free of voids. Backfill shall be compacted to dry density equal to adjacent undisturbed soil and shall conform to adjacent grades.
C. Flooding in lieu of tamping is not allowed.
D. Under no circumstances shall truck wheels be used to compact backfill.
E. Provide sand backfill a minimum of 4 inches over and under all piping under paved areas.
3.4 PIPING
A. Piping under existing pavement may be installed by jacking, boring, or hydraulic driving. No hydraulic driving is permitted under asphalt pavement.
B. Cutting or breaking of existing pavement is not permitted.
C. Carefully inspect all pipe and fittings before installation, removing dirt, scale, burrs, and reaming. Install pipe with all markings up for visual inspection and verification.
D. Remove all dented and damaged pipe sections.
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E. All lines shall have a minimum clearance of 4 inches from each other and 12 inches from lines of other trades.
F. Parallel lines shall not be installed directly over each other.
G. In solvent welding, use only the specified primer and solvent cement and make all joints in strict accordance with the manufacturer's recommended methods including wiping all excess solvent from each weld. Allow solvent welds at least 15 minutes setup time before moving or handling and 24 hours curing time before filling.
H. PVC pipe shall be installed in a manner, which will provide for expansion and contraction as recommended by the pipe manufacturer.
I. Center load all plastic pipe prior to pressure testing.
J. All threaded plastic-to-plastic connections shall be assembled using Teflon tape or Teflon paste.
K. For plastic-to-metal connections, work the metal connections first. Use a non-hardening pipe dope an all threaded plastic-to-metal connections, except where noted otherwise. All plastic-tometal connections shall be made with plastic female adapters.
3.5 VALVES
A. Master valves, flow sensors, gate valves, mainline air release valves, automatic control valves, and quick coupler valves are to be installed in the approximate locations indicated on the drawings.
B. Install valves as indicated in the detail drawings.
C. Install all valves a minimum of 18 inches off of any adjacent hardscape features.
D. Valves to be installed in valve boxes shall be installed one valve per box.
E. Provide valve ID tags for each automatic control valve with valve number.
3.6 VALVE BOXES
A. Valve boxes shall be installed in shrub areas whenever possible.
B. Each valve box shall be installed on a foundation of four bricks and the boxes shall be filled with 3/4 inch gravel backfill to a depth of 4 inches in the bottom of the box. Valve boxes shall be installed with their tops 2 inches above finish grade in ground cover areas.
C. Valve boxes shall be wrapped with landscape fabric to cover the entire bottom and sides of the box to prevent soil intrusion.
D. Heat brand the identifying letters and numbers onto the box lid.
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E. Secure all valve box lids with the locking kit.
3.7 CONTROLLER
A. The exact location of the controller shall be approved by the Landscape Architect or City's representative before installation. The electrical service shall be coordinated with this location.
B. The Contractor shall be responsible for the final electrical hook up to the irrigation controller.
C. The irrigation system shall be programmed to operate during the periods of minimal use of the design area.
D. Register the controller with the manufacturer, start the subscription weather download service and fully program the controller for automatic programming adjustment using the weather data.
Provide proof of registration and controller programming to the City .
E. Program the controller to receive flow sensor inputs and provide shut down to detect leaks in the irrigation system.
F. Ensure that the placement of the rain sensor allows for communication with the controller as required by the manufacturer.
3.8 CONTROL WIRING
A. Low voltage control wiring shall occupy the same trench and shall be installed along the same route as the lateral lines.
B. Wires shall be secured to the mainline with tape at intervals of 20 feet.
C. Provide a 12 inch wire expansion loop at all directional changes and tees on the wire path.
D. All waterproof connections shall be of an approved type and shall occur in a valve box.
Provide an 36-inch service loop at each connection.
E. An expansion loop of 36 inches shall be provided at each wire connection and/or directional change, and one of 36 inches shall be provided at each automatic control valve.
3.9 IRRIGATION SPRINKLER HEADS AND BUBBLERS
A. Irrigation sprinkler heads and bubblers shall be installed as indicated on the drawings.
B. Spacing of sprinkler heads shall not exceed maximum indicated on the drawings.
C. Riser nipples shall be of the same size as the riser opening in the sprinkler body.
D. Install all heads with swing joints.
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3.10 FLUSHING THE SYSTEM
A. Prior to installation of irrigation heads, the valves shall be opened, and a full head of water used to flush out the lines and risers.
B. Irrigation heads shall be installed after flushing the system has been completed.
3.11 ADJUSTING THE SYSTEM
A. Contractor shall adjust valves and check the coverage of each system prior to coverage test.
B. If it is determined by the Landscape Architect or City's authorized representative that additional adjustments or nozzle changes will be required to provide proper coverage, all necessary changes or adjustments shall be made prior to any planting at no additional cost.
C. The entire system shall be operating properly before any planting operations commence.
D. Automatic control valves are to be adjusted so that the irrigation sprinkler heads and bubblers operate at the pressure recommended by the manufacturer.
3.12 TESTING AND OBSERVATION
A. Do not allow or cause any of the work of this section to be covered up or enclosed until it has been observed, tested and accepted by the Landscape Architect .
B. The Contractor shall be solely responsible for notifying the Landscape Architect representative a minimum of 48 hours in advance, where and when the work is ready for testing.
C. When the irrigation system is completed, the Contractor shall perform a coverage test of each system in its entirety to determine if the water coverage for the planted areas is complete and adequate in the presence of the Landscape Architect.
D. Furnish all materials and perform all work required to correct any inadequacies of coverage due to deviations from the plans, or where the system has been willfully installed as indicated on the drawings when it is obviously inadequate, without bringing this to the attention of the Landscape Architect. This test shall be accepted by the Landscape Architect and accomplished before starting any planting.
E. Areas to be maintained for the formal maintenance period shall start maintenance at the same time, as directed by the Landscape Architect and/or City . Partial areas will not be released into maintenance prior to completion of items listed in the pre-maintenance review.
F. Final inspection will not commence without record drawings as prepared by the Contractor.
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3.13 MAINTENANCE
A. During the maintenance period adjust and maintain the irrigation system in a fully operational condition providing complete irrigation coverage to all intended plantings.
3.14 COMPLETION CLEANING
A. Clean up shall be made as each portion of the work progresses. Refuse and excess dirt shall be removed from the site, all walks and paving shall be swept, and any damage sustained on the work of others shall be repaired to original conditions.
END OF SECTION
South Park Slope and Irrigation Repair SOIL PREPARATION CIP - 603 329113 - 1
SECTION 329113 SOIL PREPARATION
PART 1 - GENERAL
1.1 SUMMARY
A. This Section includes materials, labor, apparatus, tools, equipment, temporary construction, transportation, and services necessary for and incidental to performing the proper completion of Work, as required to make a complete and thorough preparation of the planting soil, including soil amendment products, imported topsoil, as required, to make up deficiencies in quantity of soil available on site, as shown in the Contract Drawings, and as specified herein this Section.
B. Work under this Section consists of, but is not necessarily limited to, furnishing and installing the following:
1. Agronomic Soil Fertility Testing and Soil Percolation Testing.
2. Topsoil.
3. Pre-Plant Weed Control.
4. Soil Conditioners, Amendments and Fertilizers (Organic & Chemical).
C. Related Sections: The following Sections contain requirements that relate to Work in this Section:
1. Section 312219 Landscape Grading.
2. Section 328400 Landscape Irrigation
3. Section 329200 Lawns and Grasses.
4. Section 329300 Exterior Plants.
5. Section 329400 Landscape Planting Accessories.
6. Section 329813 Landscape Establishment Period.
1.2 DEFINITIONS AND APPLICABLE STANDARDS
A. References:
1. USDA United States Department of Agriculture.
2. ASTM American Society for Testing & Materials.
B. Definitions:
1. Topsoil - Shall be friable soil, providing sufficient structure in order to give good tilth and aeration to the soil. Topsoil shall be free of roots, clods, stones larger than onein the greatest dimension, pockets of coarse sand, noxious weeds, sticks, lumber, brush and other litter. It shall not be infested with nematodes or other undesireable diseasecausing organisms such as insects and plant pathogens.
2. Gradation Limits - Soil shall be a sandy loam, loam, clay loam or clay. The definition of soil texture shall be per the USDA classification scheme. Gravel over ¼-inch in diameter shall be less than 20% by weight.
3. Permeability Rate - Hydraulic conductivity rate shall be not less than onehour, nor more than twenty- when tested in accordance with the USDA Handbook Number 60, Method 34b, or other approved Methods.
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4. Fertility - The range of the essential elemental concentration in soil shall be as follows:
Ammonium Bicarbonate/
DTPA Extraction (PPM)
Element Concentration of
elements for
Soil Selection,
measured as
mg/kilogram dry
weight basis
Concentration of
Elements for
Final
Acceptance
(amended and
conditioned soil)
measured as
mg/kilogram dry
weight basis
Phosphorous 2 - 40 10 - 40
Potassium 40 - 220 100 - 220
Iron 2 - 35 24 - 35
Manganese 0.3 - 6 0.6 - 6
Zinc 0.6 - 8 1 - 8
Copper 0.1 - 5 0.3 5
Boron 0.2 - 1 0.2 1
Magnesium 50 - 150 50 150
Sodium 0 - 100 0 100
Sulfur 25 - 500 25 500
Molybdenum 0.1 2 0.1 - 2
5. Acidity - The soil pH range measured in the saturation extract (Method 21a, USDA Handbook Number 60) shall be 6.0 7.9.
6. Salinity - The salinity range measured in the saturation extract (Method 3a, USDA Hand Number 60) shall be 0.5 2.0 dS/m. If calcium and if sulfate ions both exceed 20 milliequivalents per liter in the saturation extract, the maximum salinity shall be 4.0 dS/m.
7. Chloride - The maximum concentration of soluble chloride in the saturation extract (Medoth3a, USDA Handbook Number 60) shall be 150 mg/1 (parts per million).
8. Boron - The maximum concentration of soluble boron in the saturation extract (Method 3a, USDA Handbook Number 60) shall be 1 mg/1 (parts per million).
9. Sodium Adsorption Ratio (SAR) - The maximum SAR shall be 3 measured per Method 20b, USDA Handbook Number 60.
10. Aluminum Available aluminum measured with the Ammonium Bicarbonate/DTPA Extraction shall be less than 3.0 parts per million.
11. Soil Organic Matter Content - Sufficient soil organic matter shall be present to impart good physical soil properties but not be excessive to cause toxicity or cause excessive reduction in the volume of soil due to decomposition of organic matter. The desirable range is 3% to 5%. The carbon:nitrogen ratio should be about 10. A high carbon:nitrogen ratio can indicate the presence of hydrocarbons or non-humified organic matter.
12. Calcium Carbonate Content - Free calcium carbonate (limestone) shall not be present in acid-loving plants.
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13. Heavy Metals - The maximum permissible elemental concentration in the soil shall not exceed the following concentrations:
Ammonium Bicarbonate/DTPA
Extraction (PPM)
Element (mg/kilogram)
dry weight basis
Arsenic 1.0
Cadmium 1.0
Chromium 10.0
Cobalt 2.0
Lead 30.0
Mercury 1.0
Nickel 5.0
Selenium 3.0
Silver .5
Vanadium 3.0
a. If the soil pH is between 6 and 7, the maximum permissible elemental concentration shall be reduced 50% to the above values. If the soil pH is less than 6.0, the maximum permissible elemental concentration shall be reduced 75% of the above values. No more than three (3) metals shall be present at 50% or more of the above values.
14. Phytotoxic constituent, herbicides, hydrocarbons, etc. Germination and growth of plants shall not be restricted more than 10% compared to the reference soil. Total petroleum hydrocarbons shall not exceed 50 mg/kg dry soil measured per the modified EPA Method No. 8015. Total aromatic volatile organic hydrocarbons (benzene, toluene, xylene and ethylbenzene) shall not exceed 0.5 mg/kg dry soil measured per EPA Method No. 8020.
15. Sub Grade - Soil level resulting from the rough grading work under another Section.
Cultivation of sub grade areas prior to placement of Topsoil is included in this Section.
16. Stockpiled Topsoil - Soil stockpiled for spreading over prepared sub-grade.
17. Stockpiled Native Topsoil - Topsoil stripped from the site prior to rough grading Work (under another Section), to be spread and amended as Work under this Section.
18. Imported Topsoil - Off-site Topsoil, imported and stockpiled under this Section, to be spread and amended as Work under this Section.
C. Measurements:
1. PPM: Measurement, in parts per million.
1.3 SUBMITTALS
A. General:
1. Collect information into a single Submittal for each element of construction and type of product or equipment identified under this Section for review.
2. To expedite review, Submittal shall be organized and presented into specific sections or headings. Furnish neat, concise, legible, and clearly identifiable information, and sufficiently explicit detail, to enable proper evaluation for Contract compliance. Highlight catalog, product data, or brochures containing various products, sizes, and materials to show particular item submitted.
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3. Submittal Format: As applicable, furnish Submittal as a single electronic digital PDF (Portable Document Format) file.
B. Digital Submittal Information:
1. Product/Material Data. Submit available product/material literature supplied by manufacturing source (name, address, and telephone number), and distributor source (name, address, and telephone number) for each type of product/material. a. Planting Soil (Imported/Amended Topsoil).
b. Soil Amendments (for each type used, for Sand, Perlite, Peat Humus, Gypsum, Soil Sulfur, Iron, etc).
c. Bulk Composted Organic Soil Amendment Material.
d. Granular Soil Conditioning Material.
e. Mycorrhizal Inoculum.
f. Fertilizers (for each type used).
2. Agronomic Soil Fertility Analysis and Recommendations: Submit a minimum of fourteen (14) days prior to amending of the soil and ordering soil amendments. The locations of where each of the soil test samples were derived from the Project Site shall be keyed to the site plan and shall be included with the results.
3. Qualification Data: Su
installations.
4. Receipts and photo documentation (dated for the project) of all soil preparation products purchased and installed for are to be provided to Owner and Landscape Architect for record purposes.
C. Material Samples: Submit four (4) sets of physical Material Samples for review of kind, color, pattern, size, and texture for a check of these characteristics with other elements, and for a comparison of these characteristics between Submittal and actual component as delivered and installed. Include the full range of exposed color and texture expected in the completed Work.
Provide Material Samples bound and individually wrapped in re-sealable labeled 1-gallon plastic bags (as applicable):
1. Provide Material Sample sets for each item submitted under Product/Material Data.
D. Submittals under this Article will be rejected without the benefit of review by the Landscape Architect if they are difficult to read due to insufficient scale, poor image quality, or poor drafting quality; or if the required information is missing or not presented in the format as requested.
E. No Work shall proceed under this Section until Submittal requirements indicated herein have been reviewed accordingly by the Landscape Architect.
1.4 QUALITY ASSURANCE AND CONTROL
A. Installer Qualifications for requirements indicated herein this Section:
1. Licensed Landscape Contractor, C-27, in the State of California. a. Engage an experienced, licensed Contractor who has completed landscaping work similar in material, design, and extent to that indicated for this Project and with a record of successful landscape establishment.
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b. Installer's Field Supervision: Contractor shall maintain an experienced, full-time landscape supervisor/superintendent at the Project Site during times that landscaping operations identified herein the Contract are in progress.
B. Manu and drawings in cases where the
Manufacturers of articles used in this Section furnish directions covering points not shown in the Contract Drawings or Contract Specifications.
C. Permits, Fees, Bonds, Testing, and Inspections: Contractor shall arrange and pay for permits, fees, bonds, testing, and inspections necessary to perform and complete his portion of the Work.
D. Approved Testing Laboratory and Procedures for Agronomic Soil Fertility Analyses:
1. Agronomic Soil Fertility Analyses shall be conducted by a reputable, certified, agronomic soils laboratory. Laboratory shall be a member of the Council on Soil Testing and Plant Analysis. The same laboratory shall be used throughout the duration of the Contract:
a. Wallace Laboratories, El Segundo, CA. 310-615-0116.
b. Soil and Plant Laboratory, Orange, CA. 714-282-8777. c. Fruit Growers Laboratory, Santa Paula, CA. 805-659-0910.
2. Contractor shall verify and confirm the selected Testing Laboratory and specific location(s) of soil sample(s) with the Landscape Architect prior to commencing soil sampling operations.
3. For each Soil type, submit the physical Soil Samples directly to the selected Laboratory for analysis, per the procedures outlined per Part III herein this Section. a. In addition to the physical Soil Samples, Contractor shall also provide the Laboratory with a copy of the Soil Amendment and Fertilizer products indicated herein this Section.
4. Along with the testing data results, the Agronomic Soil Fertility Analysis shall also include written recommendations authored by the Laboratory conducting the Analyses for amending, treating, and/or correcting the sampled soils. Laboratory shall utilize the organic-based Soil Amendments and Fertilizers described herein this Section to the greatest extent possible to produce satisfactory planting soil(s) suitable for sustaining healthy viable plant growth.
a. The Analyses shall also include Maintenance and Post-Maintenance fertilization programs for planted areas within the Contract.
5. Agronomic Soil Fertility Analyses shall be performed on each Soil Type samples, and include testing results for the following:
pH;
Electro-conductivity (salinity) measurement saturated extract.
Measurement of sodicity (Sodium Absorption Ratio);
Estimate of soil texture and soil organic matter;
Presence of lime;
Nutrients/Toxic Elements measurement of DPTA extract
Saturation extracts for nitrate, sulfate, sodium, calcium, magnesium, potassium, soluble phosphate, and boron; Parasitic nematodes;
Herbicide contamination;
(For Lightweight Soil Mixes): Test for physical and chemical composition, and saturated weight per cu.ft.
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6. Planting operations shall not commence until the results of the Agronomic Soil Fertility Analysis and Recommendations are reviewed accordingly by the Landscape Architect.
7. The quantity or type of amendments may be modified by the Landscape Architect within fourteen (14) days of receipt of the results. The Agronomic Soil Fertility Analysis and Recommendations shall take precedence over the amendment and fertilizer application rates specified herein or on the Contract Documents.
8. The Agronomic Soil Fertility Report/Recommendation shall take precedence over the amendment and fertilizer application rates specified herein or on the Contract Documents.
1.5 DELIVERY, STORAGE, AND HANDLING
A. General: Deliver and install materials so as to not delay Work, and install only after preparations for installation have been completed.
1. Packaged Materials: Deliver packaged materials in original, unopened packages or containers, with manufacturer's labels intact and legible, showing weight, analysis, and name of manufacturer. Store and secure properly to prevent theft or damage. a. Store packaged materials off ground and under cover, away from damp surfaces and inclement weather.
b. Protect during storage and construction against soilage or contamination from earth and other materials.
2. Bulk Materials:
a. Deliver and store bulk materials so as not to impede Work of others. b. Do not dump or store bulk materials near structures, utilities, walkways and pavements, or on existing turf areas, or plants.
c. Protect during storage and construction against soilage or contamination from earth and other materials. Provide adequate separation between bulk materials so as not to cross-contaminate bulk materials.
d. Store under cover, away from inclement weather.
e. Provide erosion-control measures to prevent erosion or displacement of bulk materials, discharge of soil-bearing water run-off, and airborne dust reaching adjacent properties, water conveyance systems, structures, or walkways. f. Accompany each delivery of bulk materials (fertilizers, amendments, topsoil, etc.) with appropriate certificates. Furnish original certificates to Landscape Architect upon request.
1.6 COORDINATION, SCHEDULING, AND OBSERVATIONS
A. Notify the Contractors performing Work related to installation of Work under this Section in ample time so as to allow sufficient time for them to perform their portion of Work and that progress of Work is not delayed. Verify conditions at the Project Site for Work that affects installation under this Section. Coordinate items of other trades to be furnished and set in place.
B. Utilities: Determine location of above grade and underground utilities and perform Work in a manner which will avoid damage to utilities. Hand excavate, as required. Maintain grade stakes until removal is mutually agreed upon by parties concerned.
C. Excavation: When conditions detrimental to adequate Soil Preparation operations are encountered, such as rubble fill, adverse drainage conditions, or obstructions, cease operations and notify Landscape Architect for further direction.
South Park Slope and Irrigation Repair SOIL PREPARATION CIP - 603 329113 - 7
D. Installation: Perform Soil Preparation operations only when weather and soil conditions are suitable in accordance with locally accepted practices.
E. Construction Site Observations: Periodic site observations shall be made by the Landscape Architect during the installation of Work under this Section for compliance with requirements for type, size, and quality. Landscape Architect retains right to observe Work for defects and to reject unsatisfactory or defective material at any time during progress of Work. Contractor shall remove rejected materials immediately from Project site. The Contractor shall request, in writing, at least one (1) week in advance of the time when mandatory site observation(s) by the Landscape Architect are required.
1.7 SITE CONDITIONS
A. Project Site shall be free of weeds, native grasses, evasive grasses, (Bermuda Grass, Nut Grass, Kikiyu Grass, etc.) prior to Topsoil distribution or soil amendment placement.
B. Excessive rock, dead or declining vegetation, trash, debris, or other items that has accumulated throughout the duration of the Project shall be removed from the Project Site by the Contractor, and as directed by the Landscape Architect.
C. Grading and soil preparation Work shall be performed only during the period when beneficial and optimum horticultural results may be obtained. If the moisture content of the soil should reach such a level that working it would destroy soil structure or cause compaction, spreading and grading operations shall be suspended until, in the opinion of the Landscape Architect, the moisture content is increased or reduced to acceptable levels and the desired results are likely to be obtained.
1. Soil moisture level prior to planting shall be no less than 75% of field capacity. The determination of adequate soil moisture for planting shall be in the sole judgment of the Landscape Architect.
2. If the soil moisture level is found to be insufficient for planting, planting pits shall be filled with water and allowed to drain before commencing planting operations.
D. Planting areas which become compacted in excess of 85% relative compaction due to construction activities shall be tilled and thoroughly cross-ripped to a minimum depth of twelveto alleviate the condition, taking care to avoid all existing subsurface utilities, drainage, etc.
1.8 SUBSTITUTIONS
A. Consideration: Materials to be considered equal to the Materials indicated herein this Section shall be reviewed by the Landscape Architect. Materials with equal performance characteristics in dimensional size, color, composition, operation, and/or other characteristics do not change the design concept, aesthetic appearance, nor intended performance, as solely judged by the Landscape Architect. The burden of proof on product equality is on the Contractor.
B. ified herein are used as standards
of quality. This implies no right to the Contractor to substitute other materials without prior written approval by the Landscape Architect for Work under this Section.
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C. Materials substituted and installed by the Contractor, without prior written approval by the Landscape Architect, may be rejected. Contractor shall not be entitled to be compensated by the Owner where the Contractor has installed rejected substitutions without receiving prior written approval.
D. Contract Price: Substituted Materials under this Section shall not increase the Contract price.
PART 2 - PRODUCTS
2.1 SOIL MIXES/BLENDS
A. Soil Conditioner Blend, for amending on-site native soil planting surfaces, stockpiled, plant back fill or imported topsoil: Furnish a thoroughly blended composition of Bulk Composted Organic Soil Amendment Material and Granular Soil Conditioning Material & Fertilizer. Any substitution isted herein must be requested by the Contractor and approved, in writing, by the Landscape Architect at least thirty (30) days prior to installation.
1. Bulk Composted Organic Soil Amendment Material:
a. Material Composition: Bulk Composted Organic Soil Amendment Material shall be thoroughly cured for a minimum of 100 days, and shall be free from any trash (glass, metal, plastic, etc.) deleterious materials, bio-solids, and/or toxic chemicals.
The Material shall be non-hazardous, and conform to US Environmental Protection shall also exceed standards
and specifications for unrestricted application as a landscaping and agricultural soil amendment.
b. Humus material shall have an acid-soluble ash content of no less than 6% and no more than 20%. The organic matter content shall be at least 50% on a dry weight basis.
c. Types of acceptable products are composts, manures, mushroom composts, straw, alfalfa, peat mosses etc. low in salts, low in heavy metals, free from weed seeds, free of pathogens and other deleterious materials.
d. Composted wood products are conditionally acceptable [stable humus must be present]. Wood based products are not acceptable which are based on red wood or cedar.
e. Sludge-based materials are not acceptable.
1) Gradation/Screen Analysis: A minimum of 90% of the material by weight criteria:
Percent Passing Sieve Designation
80 - 100% 6.35 mm ( )
50 80% 2.38 mm (No. 8)
0 40% 500 micron (No.
35)
2) Maturity: Physical characteristics suggestive of maturity include shall include:
a) Color: Dark brown to black.
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b) Odor: Aerobic, without malodorous presence of decomposition products.
c) Particle characterization: Identifiable wood pieces are acceptable but the balance of Material should be soil-like without recognizable grass or leaves.
f. Analytical Properties: Contractor shall submit proof of the Bulk Composted Organic Soil Amendment Material by providing a sample as identified herein this Section, and a lab analysis that has been performed within 30 days of the installation of the planting. Soil mix shall have (at a minimum) the following properties:
Material Minimum Targeted Property/Range
Total Nitrogen (N%) .50-1.0%
Phosphorus (as P2O5) 2.0%
Potassium (as K2O) 0.2%
pH (units) 6.0 to 7.5, as determined in saturated
paste.
Organic Content Minimum 50% based on dry weight and
determined by ash method. Minimum
205 lbs. organic matter per cubic yard of
compost.
ECe (millimho/cm) <5.0; based on pre-leaching with equal volume of water.
Carbon-to-Nitrogen Ratio <25-to-1, nitrogen stabilized.
Bulk Density 1,000 to 1,100 pounds/cubic yard.
Sodium Absorption Ratio
(SAR)
Under 20.0
Total Iron 1.5%3.
Moisture Content 35%-60%
Acid-soluble Ash content No less than 6% and no greater than 20%.
Salt Content <10millimho/cm @ 25d C. on a saturated
paste extract.
Boron Content <1.0 parts per million on a saturated paste extract.
Silicon-Content (acidinsoluble ash)<50%
Calcium Carbonate No presence on alkaline soils.
Maximum Total
Permissible Pollutant
Concentrations Parts per
million (mg/kg dryweight basis)
Arsenic: 1.0
Cadmium: 1.0
Chromium: 10.0
Cobalt: 2.0
Copper: 1.0
Lead: 30.0
Mercury: 1.0
Molybdenum: 2.0
Nickel: 5.0
Selenium: 1.0
Silver: 0.5
Vanadium: 3.0
Zinc: 2.0
South Park Slope and Irrigation Repair SOIL PREPARATION CIP - 603 329113 - 10
g.
h. Commercial-Grade Products & Manufacturers: Subject to compliance with requirements, provide products by one (1) of the following:
1) Soil Conditioner, Synagro Professional Organic Soil Products. 2) Agromend, Agromin Horticultural Products.
3) , Greenway Compost.
4) Superior Blend Compost, Artesia Sawdust Products, Inc. 5) Compost, EarthWorks Soil Amendments, Inc.
6) , Recycled Wood Products (RWP).
7) #SSA-CST Supreme Organic Soil Amendment, Plants Choice, Inc. 8) Agri Service, Inc.
9) Or equal, as approved by the Landscape Architect.
2. Granular Soil Conditioning Material & Fertilizer:
a. Material Composition and Analytical Properties: Granular Soil Conditioning Material & Fertilizer shall be a singular manufacturer-blended combination of soil conditioning material and fertilizer. It shall be granular in form, long-lasting, free flowing, and suitable for application with approved equipment. It shall not contain any sewage sludge or manure-based products, and shall contain the following guaranteed minimum available analysis range:
Element/Material Targeted Property Range
Nitrogen (N) 5.0% to 6.0%
Phosphoric Acid (as P2O5) 2.0% to 3.0%
Potash (as K2O) 1.0% to 4.0%
Humic Acids 15.0 % to 20.0%
Calcium 7.0%
Sulfur 0.0% to 5.0%
b. Commercial-Grade Products, Manufacturers and Associated Rates of Application:
Subject to compliance with requirements, provide products by one (1) of the following:
1) Tri-C 6-2-4, Tri-C Enterprises LLC, Chino, CA. 800-927-3311. a) Application Rate at 70 lbs. per 1,000 square feet of planting area. 2) Gro-Power Plus 5-3-1, Gro-Power, Chino, CA. 909-393-3744. a) Application Rate at 200 lbs. per 1,000 square feet of planting area. 3) or equal, as approved by the Landscape Architect.
2.2 ORGANIC SOIL AMENDMENT COMPONENTS
A. Peat Humus:
1. Type: Canadian Sphagnum Peat, as derived from the genus Sphagnum, medium-divided, coarse fibrous texture, brown in color.
2. Measurement: Measure peat in air dry condition, containing not more than 35% moisture by weight on an "as-received" basis.
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3. Physical Properties:
Percent Passing Sieve Size
95 - 100% 9.51 mm (3/8 in.)
0 - 40% 500 micron (#35, 32
mesh)
4. Organic Content (dry weight basis): Minimum 95%.
5. Fiber Content: Greater than 66%.
6. Water Holding Capacity: 20x to 30x its dry weight in water.
7. Range in Ash Content (%): 1.0 to 5.0.
8. Chemical Properties:
a. Nitrogen (dry weight basis): 0.6-3.0%.
b. Salinity/Soluble Salts: Saturation extract conductivity 0.0-3.0 millimhos/cm @ 25 degrees C.
c. pH range: 3.0 to 4.0.
9. Unacceptable Materials:
a. Coir Dust.
b. Sedge Peat.
c. Reed Peat.
d. Hypnum Peat.
B. Mycorrhizal Inoculum:
1. Mycorrhizal Inoculum for Plant Material (not Palm Trees): Dual soil-conditioning biological inoculum system of endo-and ecto- Mycorrhizal, used to further aid the plants ability to efficiently uptake available soil nutrients and increase resistance to drought. a. Products & Manufacturers: Subject to compliance with requirements, provide products by one (1) of the following:
1) 4-gram Myco-Pak, Tri-C Enterprises LLC, Chino, CA, 800-927-3311. 2) 4 oz. Packet - Roots 1 Step, Roots, Inc., Independence, MO, 800-342-6173. 3) Or equal, as approved by the Landscape Architect.
b. Provide at the prescribed application rate,
recommendations.
2.3 CHEMICAL SOIL AMENDMENT COMPONENTS
A. General: Chemical Soil Amendment Components listed herein may or may not be used, depending on the results of the Agronomic Soil Fertility Report. Provide as required:
B. Gypsum: Commercially-processed and packaged agricultural-grade hydrated calcium sulfate product (CaSO4), 92.0% minimum, pH at 7.1.
1. Commercial-Grade Products & Manufacturers: Subject to compliance with requirements, provide products by one (1) of the following:
a. Ben Franklin® No. 1 Agricultural Gypsum, U.S. Gypsum Company. b. Art Wilson Company.
c. CAL-SUL® Pelletized Agricultural Gypsum, North Pacific Group. d. Bumper Harvest Agricultural Gypsum, Domtar Gypsum.
e. Premium 97 Solution-Grade Gypsum, Diamond K, Inc.
f. Or equal, as approved by the Landscape Architect.
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C. Soil Sulfur: Elemental Sulfur (90% min.) commercially manufactured, water degradable, palletized.
1. Commercial-Grade Products & Manufacturers: Subject to compliance with requirements, provide products by one (1) of the following:
a. Disper-Sul, Martin Resources, Inc.
b. Soil Sulfur, Red Top.
c. Or equal, as approved by the Landscape Architect.
D. Iron: Non-staining, 40% Fe minimum, complete with micro-nutrients and 2% humic acids, as derived from iron oxide, manganese oxide, or zinc oxide.
1. Commercial-Grade Products & Manufacturers: Subject to compliance with requirements, provide products by one (1) of the following:
a. Gro-Power Iron, Gro-Power, Chino, CA.
b. Iron 45 w/ Micronutrients, Tri-C Enterprises LLC, Chino, CA. c. Or equal, as approved by the Landscape Architect.
E. Dolomite Lime: Agricultural-grade mineral soil conditioner containing 35% minimum magnesium carbonate, and 49% minimum calcium carbonate, 100% passing #65 sieve.
F. Potassium Sulfate (Sulfate of Potash K2O), (0-0-50 guaranteed analysis N-P2O5-K2O):
Agricultural-grade, containing minimum 50% of water-soluble potash and 18% Sulfur (S).
G. Single Superphosphate P2O5 (0-15-0 guaranteed analysis N-P2O5-K2O): Commercial product, containing 15% available phosphoric acid and 14% Sulfur.
H. Triple Superphosphate P2O5, (0-45-0 guaranteed analysis N-P2O5-K2O): Commercial product, containing 45% available phosphate and 15% Calcium (Ca).
I. Ammonium Sulfate (NH4)2SO4, (21-0-0 guaranteed analysis N-P2O5-K2O): Commercial product containing approximately 21% ammonia.
J. Ammonium Nitrate NH4NO3, (34-0-0 guaranteed analysis N-P2O5-K2O): Commercial product containing approximately 34% ammonia.
K. Calcium Nitrate CaNO3, (15.5-0-0 guaranteed analysis N-P2O5-K2O): Agricultural grade containing 15-1/2% nitrogen.
L. Potassium Nitrate KNO3, (13-0-45 guaranteed analysis N-P2O5-K2O): Commercial product containing approximately 13% nitrogen and 45% potassium.
M. Ureaformaldehyde (38-0-0 guaranteed analysis N-P2O5-K2O): Granular commercial product containing approximately 38% nitrogen.
N. Urea CO(NH2)2, (46-0-0 guaranteed analysis N-P2O5-K2O): Granular commercial product containing 46% nitrogen.
O. I.B.D.U. (Iso Butyldiene Diurea): Commercial product containing 31% nitrogen.
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2.4 FERTILIZERS
A. Composition: Nitrogen (N), phosphorous (P2O5), and potassium (K2O) content, plus other elements, as indicated.
B. Palm Tree Fertilizer (pre-plant 9-3-9) <<<VERIFY>>>:
1. Organic-based, long-lasting, controlled-release, uniform in composition, free flowing, granular- type fertilizer with micronutrients, suitable for application with approved equipment.
2. Palm Fertilizer shall contain the following minimum available percentages by weight of plant food (pending results of soil analysis):
Element/Material Targeted Property
Range
Nitrogen (N) - Slow
Release
9.0% minimum
Phosphoric acid (as
P2O5)
3.0% minimum
Potash (as K2O) 9.0% minimum
Calcium (Ca) 3.0% minimum
Magnesium (Mg) 4.0% minimum
Sulfur (S) 6.0% minimum
Iron (Fe) 2.0% minimum
Manganese (Mg) 0.05% minimum
Zinc (Z) 0.05% minimum
Humus 25.0% minimum
Humic Acids w/
micronutrients
5.0% minimum
3. Commercial-Grade Products & Manufacturers: Subject to compliance with requirements, provide products by one (1) of the following:
a. Gro-Power 9-3-9 Palm & Tropical with Micronutrients, Gro-Power, Chino, CA. 909-393-3744.
b. Or equal, as approved by the Landscape Architect.
4.
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C. Turf Grass Starter Fertilizer (pre-plant 3-12-12), as required
1. General: Shall be applied for turf grasses planted from sod or seed (not hydroseed or hydrostolons).
2. Fertilizer shall be an organic-based, long-lasting, controlled-release, uniform in composition, free flowing granular-type fertilizer with micronutrients, suitable for application with approved equipment. Fertilizer shall be high in potassium and phosphorous elements to aid in strong root development. a. Turf/Lawn Fertilizer shall contain the following minimum available percentages by weight of plant food (pending results of soil analysis):
Element/Material Targeted Property
Range
Nitrogen (N)
Slow Release
3.0% minimum
Phosphoric acid (as
P2O5)
12.0% minimum
Potash (as K2O) 12.0% minimum
Humus 35.0% minimum
Humic Acids w/ micronutrients and soil enhancers 7.0% minimum
3. Commercial-Grade Products & Manufacturers: Subject to compliance with requirements, provide products by one (1) of the following:
a. Gro-Power 3-12-12 Flower & Bloom, Gro-Power, Chino, CA. 909-393-3744. b. Or equal, as approved by the Landscape Architect.
4. Application Rate: Twenty (20) pounds per 1,000 SF.
D. Fertilizer Tablet:
1. General: Fertilizer Tablet shall be a 7-gram tablet, organic-based, tightly compressed chiptype commercial grade, 12-month slow-release planting tablets, and shall be composed of the following available percentages by weight of plant food:
Element/Material Targeted Property
Range
Nitrogen (N) 12.0% minimum
Phosphoric acid (as
P2O5)
8.0% minimum
Potash (as K2O) 8.0% minimum
Humus 20.0% minimum
Humic Acids w/
micronutrients and soil
enhancers
4.0% minimum
2. Commercial-Grade Products & Manufacturers: Subject to compliance with requirements, provide products by one (1) of the following:
a. Gro-Power 12-8-8 Planting Tablets, Gro-Power, Chino, CA 909-393-3744. 1) Application Rate: As indicated herein Part III this Section. b. Or equal, as approved by the Landscape Architect.
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2.5 ACCESSORIES
A. Wetting Agent/Water Storing Polymer: Non-biodegradable, granular, polyacrylamide polymer soil amendment.
1. Commercial-Grade Products & Manufacturers: Subject to compliance with requirements, provide products by one (1) of the following:
a. Broadleaf P4, Broadleaf Industries, Inc. Chula Vista, CA (619)424-7880. b. Or equal, as approved by the Landscape Architect.
B. Perforated Drain Pipe & Drain Sock (Tree Chimney): Refer to Section 329400 Landscape Planting Accessories.
C. Landscape Mulch Material:
1. Organic Wood Mulch: Refer to Section 329400 Landscape Planting Accessories.
2. Landscape Mulch Material for Submersible Planting Pots: Refer to Section 329400 Landscape Planting Accessories.
PART 3 - EXECUTION
3.1 AGRONOMIC SOIL FERTILITY REPORT/RECOMMENDATION
Once rough grading has been accomplished, and prior to commencing Soil Preparation operations, (amendments, fertilizers, etc.), soil samples shall be taken from representative areas and below grade depths of the Project Site. Locations and depths to gather the representative soil samples shall be accomplished by the Contractor under the direction of the Landscape Architect.
1. Provide 2 Soil Samples.
B. Guidelines for Selecting the Soil Samples:
1. Select representative areas to sample. The area needs to be uniform in color, texture, depth, and drainage with the same fertilizing program and type of use. Planting areas to receive lawns, flowerbeds, trees, cut areas, fill areas, etc. should be tested separately. An area containing multiple trees and shrubs can be grouped into one area if the planting is the same.
2. Depths and process of soil sampling:
a. Sample as deep as the soil will be amended, generally sixgroundcover/lawns, eighteen-inches ( ) deep for shrub areas, twenty-four-inches ( ) deep for small boxed trees, and three- -feet ( ) for large boxed trees.
b. Use a soil probe or soil auger to remove a core sample; otherwise, use a shovel to dig a hole to the desired depth. Sample the soil from the side of the excavated hole, scraping the side with a trowel. The tools used for digging shall be clean and not rusty. Avoid sampling when the soil is too wet.
3. In desired areas where multiple sub-samplings are taken from any one (1) area to create a combined sample, mix the sub-samples homogenously together in a clean plastic bucket prior to placing in the plastic bag.
4. Each Sample shall be sent directly to the laboratory in a separate, re-sealable, one (1)- gallon plastic bag. Provide a minimum of four (4) cups of soil within each respective sample to allow for adequate testing.
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3.2 SOIL PERCOLATION TESTING
A. Type/Quantity: During operations of Agronomic Soil Fertility Testing and prior to installing Plant Material, Contractor shall perform Soil Percolation Tests, through the direction of the Landscape Architect, in selected representative areas of the Project Site, to verify acceptable natural drainage, soil structure, and soil composition. Contractor shall verify the locations of the Soil Percolation Tests with the Landscape Architect.
1. Required Number of Soil Percolation Tests: 1
B. Procedure: Each Soil Percolation Test shall be performed as follows:
1. Dig a hole: - - -
2. Fill the hole with water to top and cover with plywood and barricade. Allow hole to drain and fill again to top.
3. Make daily observations, noting the depth of water each day.
4. Report findings, in writing, to the Landscape Architect. Include the length of time the water takes to drain completely from each hole, date of test, location, and other information, which may be useful in providing further recommendations.
C. Results: Based on the combined results of the Agronomic Soil Fertility Testing and the Soil Percolation Tests, Contractor may be required to install additional tree drainage sumps or other drainage methods at each planting pit for trees larger than 15-gallon container stock. This does red Tree Root
Aeration Units indicated in Section 329400 Landscape Planting Accessories. Contractor shall include, as a line-item price within the Base Bid, the price per each additional tree drainage sump, should they be required (based on the testing). Should additional tree drainage sumps or other methods is required, compensation shall be awarded to the Contractor at the line-item price (each) as provided by the Contractor.
3.3 SOIL MOISTURE CONTENT
A. General: Do not work soil when moisture content is so great that excessive compaction occurs, or when it is so dry that dust will form in air, or that clods will not break readily. Apply water, if necessary, to bring soil to an optimum moisture content for tilling and planting. Soil moisture level prior to planting shall be no less than 75% of field capacity. The determination of adequate soil moisture for planting shall be the judgment of the Landscape Architect. Range: Maintain within two-percent (2%) above or below optimum moisture content at times during Work.
3.4 SITE CONDITIONS
A. Contractor shall protect existing and new improvements and systems installed prior to planting installation. Maintain protection in place until completion of Work and contracted Landscape Establishment Period.
B. Protect concrete paving, headers, and drainage from staining due to contact with wet nitrogen stabilized mulch/sawdust, or contact with chelated iron. Correct any stained concrete.
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3.5 CLEARING & CULTIVATION
A. Clearing: Clear planting areas free of stones two-inches (1 r and larger, weeds, debris, and other extraneous materials prior to soil preparation Work.
B. Pre-Plant Weed Control:
1. Clear and remove existing weeds by spraying and grubbing to at least onethe soil surface.
2. Dead weeds shall be cleared and removed prior to planting.
3. Maintain a weed-free Project Site until final acceptance by the Owner, utilizing mechanical, chemical, or manual treatment.
C. Cultivation of Native Site Soil and/or Spreading Imported Topsoil, with Amendments/Fertilizers:
1. Verification: In planting areas where Imported Topsoil will be applied, verify that subgrades prior to installation of Imported Topsoil have been established under rough grading.
Do not spread Imported Topsoil prior to acceptance of sub-grade Work.
2. Cultivation: Following Pre-Plant Weed Control operations, rip or cultivate verified planting areas of Native Site Soil at the indicated depth, prior to applying Imported Topsoil (if required) and Soil Amendments/Fertilizers.
a. Depth of Cultivation: minimum Ten3. Following initial cultivation of existing Native Site Soil, evenly spread Imported Topsoil (if required) throughout all planting areas at the minimum indicated depth to meet finished landscape grades.
a. Depth of Imported Topsoil: Minimum six4. Once Imported Topsoil has been spread, uniformly broadcast all required Soil Amendments and Fertilizers indicated in Planting Soil Amendments Schedule (below) as amended through the results of the Agronomic Soil Fertility Report.
5. Thoroughly cultivate/blend all materials to provide a homogenous planting soil mixture at the indicated depth:
a. Depth of Cultivation: Minimum Ten6. Tamp/compact prepared Planting Soil as required to eliminate settlement, and complete finish grading operations per Section 312219 Landscape Grading.
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7. Planting Soil Amendment Schedule:
Soil Amendment/Fertilizer Ratio
First Component of Soil
Conditioner Blend:
Bulk Composted Organic Soil
Amendment
Four (4) cu. yds. / 1,000 square feet of
planting area.
Second Component of Soil
Conditioner Blend:
Granular Soil Conditioning
Material & Fertilizer
At indicated ratio, per selected
Manufacturer.
Gypsum 200 pounds / 1,000 square feet.
Commercial Fertilizer At indicated ratio, per selected
Manufacturer.
Soil Sulfur 8 pounds / 1,000 square feet of planting
area.
Iron (non-staining) 10 pounds / 1,000 square feet of planting area.
a. Modifications: The Planting Soil Amendment Schedule may be modified, based on the combined results of the Agronomic Soil Fertility Tests and Percolation Tests. 1) Contractor shall be provided with fair and adequate compensation by the Owner should additions or increases to the specified ratios are required to the Planting Soil Amendment Schedule due to the Agronomic Soil Fertility Test results and/or recommendations by the Landscape Architect. 2) Contractor shall provide the Owner fair and adequate credit should subtractions or decreases to the specified ratios are required to the Planting Soil Amendment Schedule due to the Agronomic Soil Fertility Test results and/or recommendations by the Landscape Architect.
8. Complete finish grading operations per Section 312219 Landscape Grading.
3.6 APPLICATION RATES
A. Fertilizer Tablets shall be spread equidistantly around the perimeter within the Amended Planting Backfill Mixture, up to within threefollowing rates:
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Size of Plant Material Total Quantity of 7-gram
Fertilizer Tablets
Liner, Plug, Flat-Size Plant, or 4 One (1) Tablet
One (1)-gallon Container stock. Three (3) Tablets
Five (5)-gallon Container stock. Nine (9) Tablets
Fifteen (15)-gallon container stock Fifteen (15) Tablets Sixteen (16) Tablets
Eighteen (18) Tablets
Twenty (20) Tablets
Twenty-two (22) Tablets
Twenty-four (24) Tablets
Thirty-six (36) Tablets
Box. tree caliper size.
-
Palm tree requires 50 tablets)
Two (2) Tablets.
1. Contractor shall not provide Fertilizer Tablets for designated native plant species, as indicated in the Contract Drawings or as directed by the Landscape Architect. Contractor shall verify with the Landscape Architect, in writing, as to which plants are subject to not receive the Fertilizer Tablets.
B. Mycorrhizal Inoculum Application Rate:
1. During application of Fertilizer/Planting Tablets, Mycorrhizal Inoculum shall be spread equidistantly around the perimeter within the Amended Planting Backfill Mixture, up to rescribed application
3.7 DRAINAGE OF PLANTING AREAS
A. Surface Drainage:
1. Discrepancies: Provide proper surface drainage of planted areas. Submit in writing all discrepancies in the Contract Drawings or Specifications, or prior Work done by others, which Contractor feels precludes establishing proper drainage.
2. Correction: Include description of work required for correction or relief of said condition.
B. Detrimental Drainage, Soils and Obstructions:
1. Notification: Submit in writing all soils or drainage conditions considered detrimental to growth of plant materials. State condition and submit proposal and cost estimate for correcting condition.
2. Correction: Submit for acceptance a written proposal and cost estimate for the correction before proceeding with Work.
3. Obstructions: If rock, underground construction Work, tree roots, or other obstructions are encountered in the performance of Work under this Section, submit cost required to remove the obstructions to a depth of not less than sixdepth.
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3.8 CLEAN UP AND PROTECTION
A. For Work under this Section, keep Work area in a clean, orderly, and safe condition. Contractor shall remove trash caused from his Work on a weekly basis throughout the duration of the Work.
B. Protect site 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 Soil Preparation areas as directed.
C. Upon completion of his Work under this Section, the Contractor shall remove rubbish, waste, debris, excess construction materials, and other items resulting from construction operations offsite as described herein this Section, as directed by the Landscape Architect.
END OF SECTION
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SECTION 329200 LAWNS & GRASSES
PART 1 - GENERAL
1.1 SUMMARY
A. This Section includes materials, labor, apparatus, tools, equipment, temporary construction, transportation, and services necessary for and incidental to performing the proper completion of Work, as required to make a complete Turf Grass and/or Ornamental Groundcover (via sown seed, stolon, plug, or sod) planting installation, as shown on the Contract Drawings, and as specified herein this Section.
B. Work under this Section consists of, but is not necessarily limited to, furnishing and installing the following:
1. Sodded Turf Grasses.
C. Related Sections. The following Sections contain requirements that relate to Work in this Section:
1. Section 328400 Planting Irrigation.
2. Section 329113 Soil Preparation.
3. Section 329300 Exterior Plants.
4. Section 329400 Landscape Planting Accessories.
5. Section 329813 Landscape Establishment Period.
1.2 DEFINITIONS AND APPLICABLE STANDARDS
A. References:
1. ASPA American Sod Producers Association.
2. AOSA Association of Official Seed Analysts.
B. Definitions:
1. Plant Material(s): Refers to living plant species, inclusive of turf grass (via sown seed, stolons, and/or sod), ornamental grasses or groundcovers (via sown seed or sown plugs) for the Project.
2. Planting Area (PA): As denoted on the Contract Drawings, shall refer to areas to be installed with Plant Material(s), or areas where existing vegetation shall be protected.
C. Measurements:
1. SQ/FT: Measurement, in square-foot.
1.3 SUBMITTALS
A. General:
1. Collect information into a single Submittal for each element of construction and type of product identified under this Section for review.
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2. To expedite review, Submittal shall be organized and presented into specific sections or headings. Furnish neat, concise, legible, and clearly identifiable information, and sufficiently explicit detail, to enable proper evaluation for Contract compliance.
Highlight catalog, product data, or brochures containing various products, sizes, and materials to show particular item submitted.
3. Submittal Format: As applicable, furnish Submittal as a single electronic digital PDF (Portable Document Format) file.
B. Digital Submittal Information:
1. Product Data: Manufacturer's current catalog cuts and specifications for materials included herein this Section.
2. Certifications:
a. Certificates of inspection as required by law for transportation of each shipment of plant material as required.
1) Sod Certification: Certification of each seed mixture for sod, identifying sod source, including name and telephone number of supplier.
3. Qualification Data, for firms and persons specified in the "Quality Assurance and Control" Article to demonstrate their capabilities and experience. Include lists of completed projects with project names and addresses, names and address of architects and owners, and other information specified.
4. Meeting Notes from Pre-installation Conference.
C. Submittals under this Article will be rejected and returned without the benefit of review by the Landscape Architect if they are difficult to read due to insufficient scale, poor image quality, or poor drafting quality; or if the required information is missing or not presented in the format as requested.
D. No Work shall proceed under this Section until Submittal requirements indicated herein have been reviewed accordingly by the Landscape Architect.
1.4 QUALITY ASSURANCE & CONTROL
A. Installer Qualifications:
1. Requirement: Valid California C-27 (Landscaping Contractor) License.
2. Installer's Field Supervision: Installer to maintain an experienced full-time supervisor on the Project site during times that installations under this Section are in progress.
B. Plant Material Quality:
1. Refer to requirements under Part II herein this Section.
C. Observation: Landscape Architect may observe installation Work herein this Section at Project Site for compliance with requirements for type, size, and quality. Landscape Architect retains right to observe installation of products for defects and to reject unsatisfactory or defective material or installation at any time during progress of Work. Contractor shall remove rejected Work immediately from Project site.
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1.5 DELIVERY, STORAGE, AND HANDLING <<<SELECT AS NEEDED>>> A. Sod:
1. Harvest and Delivery: Harvest Sod from the source and deliver to Project Site within 24 hours. Deliver only as much Sod as can be installed in one (1) day's work. Carefully handle Sod accordingly to the requirements of the Specifications for Turfgrass, Sod Material
2. Review: Sod not transplanted within this time period shall be reviewed by the Landscape Architect prior to installation.
B. Granular Soil Conditioning Material & Fertilizer:
1. Delivery: Furnish material in unopened and undamaged Manufacturer's standard containers bearing original certification labels showing quantity, analysis and name of Manufacturer.
2. Storage: Protect material from weather or other conditions that would damage or impair the effectiveness of the product.
1.6 PROJECT SITE CONDITIONS
A. General Requirements: Installation under this Section shall be performed only during the time of day and during seasons when satisfactory results can be expected, unless authorized by the Landscape Architect.
1. Sod: Install immediately after finish grading and irrigation installation are accepted.
B. Climate Restrictions: Do not install Plant Materials under this Section during rainy or inclement weather.
1.7 SUBSTITUTIONS
A. Consideration: Materials to be considered equal to the Materials indicated herein this Section shall be reviewed by the Landscape Architect. Materials with equal performance characteristics produce
in dimensional size, color, composition, operation, and/or other characteristics do not change the design concept, aesthetic appearance, nor intended performance, as solely judged by the Landscape Architect. The burden of proof on product equality is on the Contractor.
B. ndards
of quality. This implies no right to the Contractor to substitute other materials without prior written approval by the Landscape Architect for Work under this Section.
C. Materials substituted and installed by the Contractor, without prior written approval by the Landscape Architect, may be rejected. Contractor shall not be entitled to be compensated by the Owner where the Contractor has installed rejected substitutions without receiving prior written approval.
D. Contract Price: Substituted Materials under this Section shall not increase the Contract price.
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1.8 WARRANTY
A. Time Period: Warrant Plant Materials under this Section are established and in a healthy and flourishing condition of active growth six (6) months from date of Final Acceptance.
B. Appearance During Warranty:
1. Turf Grass areas shall be free of dead or dying patches, and shall show foliage of a normal density, size and color.
2. Ornamental Grass areas shall be free of dead or dying patches, and shall show foliage of a normal density, size and color.
C. Delays: Delays caused by the Contractor in completing planting operations under this Section which extend the planting into more than one (1) planting season shall extend the Warranty Period correspondingly.
D. Coverage: Warrant growth and coverage of installations under this Section to the effect that a minimum of 95% of the area planted shall be covered and of acceptable appearance with the specified planting after one (1) growing season, with no bare spots.
1. Exceptions: Contractor shall not be held responsible for failures due to neglect by Owner, vandalism, or natural disaster during Warranty Period. Report such conditions in writing.
1.9 FINAL ACCEPTANCE AND LANDSCAPE ESTABLISHMENT PERIOD A. Refer to Section 329813 Landscape Establishment Period.
PART 2 - PRODUCTS
2.1 TURF GRASS MATERIALS
A. General:
1. Provide sodded installation of Turf Grass areas as designated on the Contract Drawings.
B. Turf Grass Sod Material:
1. Provide certified Turf G pecifications for thickness, size, strength, moisture content, and mowed height. Provide Sod of grass species and varieties selected, proportioned by weight, and minimum percentages of purity, germination, and maximum percentage of weed seed.
2. Sod shall consist of live, growing, mature nursery-grown field stock, and shall arrive with a lush appearance, uniform texture, and a deep green color typical of the selected turf grass species.
3. Sod shall be machine-cut from the nursery field with a minimum of oneof soil that completely covers the roots of the Sod. Sod shall contain a healthy, virile root system of dense, strong, thickly matted roots throughout, with no dead or dry edges, and capable of vigorous growth and development when planted. Sod shall be sufficiently dense to bear handling and placement without tearing.
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4. Sod shall be free of thatch, diseases, and harmful insects, and reasonably free from noxious or broadleaf weeds or other grasses, and shall not contain any other matter deleterious to its growth or which might affect its subsistence or hardiness when transplanted.
a. weeds are found per
100 SF of Sod.
b. Entire lot of Sod shall be rejected if found to contain the following weeds:
common Bermuda grass, quackgrass, nutgrass, johnsongrass, poison ivy, nimbleweed, thistle, bindweed, bentgrass, perennial sorrel, or bromegrass.
5. Turf Grass Sod Species:
a. Type: Platinum te Paspalum
activity levels, durable, hardy, coarse texture, up to 40% shade, mow at 2- 3- -green color year-round.
b. Products & Manufacturers: Subject to compliance with requirements, provide products by one (1) of the following:
1) West Coast Turf, Palm Desert, CA 760-340-7345.
2) Or equal (no known equal).
PART 3 - EXECUTION
3.1 EXAMINATION
A. Verification of Conditions:
1. Grades: Verify that grades are within one-inch +/-) of the required finished grades. Verify that applicable soil preparation and erosion control materials have installed under other Sections of the Contract Specifications. Report all variations in writing.
2. Irrigation System: Verify that the irrigation system is installed and 100% coverage of the subject area is complete, tested, and in full working order. Complete installation of the irrigation system is a prerequisite for commencing work under this Section.
3. Stones, Weeds, and Debris: Verify that planting areas under this Section are clear of stones larger than 1-1/2 in. diameter, and that weeds, debris and other extraneous materials have been removed prior to installation.
3.2 PREPARATION
A. Limit sub-grade preparation to areas that will be planted in the immediate future.
B. Excessive Soil Moisture: Do not commence Work under this Section when Soil Moisture Content is so great that excessive compaction to the soil will occur during installation. Owner and/or Landscape Architect shall be the sole judges as to a acceptable soil moisture content.
C. Inadequate Soil Moisture: Apply water, in quantity as necessary, to bring soil to a optimum moisture content for installation under this Section. Do not work soil when it is so dry that dust will form in air or where clods will not readily break apart.
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D. Cultivation of Slopes: Planting areas of 2:1 slopes and greater shall be ripped or cultivated to a Refer to Section 329113 Soil
Preparation.
E. Erosion Control Fabric: Refer to Section 329400 Landscape Planting Accessories.
F. Contractor's Option: Perform manual hand seeding, machine, or hydro-mulching of planting areas.
3.3 TURF GRASS SOD INSTALLATION
A. Delivery: Sod slabs shall be delivered on pallets and installed at the Project Site within twentyfour (24) hours after harvesting. Sod not installed within this time period shall be inspected and approved or rejected by the Landscape Architect. Do not lay sod if dormant.
B. Protection: Protect root system of the sod from exposure from the weather, including dehydration, contamination, and heating during transportation to the site and delivery. In hot, dry, or windy weather conditions, stacked sod at the Project Site shall be lightly sprinkled with water to prevent sod slab edges from drying out.
C. Allowance Period for Soil Settlement: Turf Grass Sod installation shall be started only after soil preparation and finish grading has been completed and soil has been permitted to settle under full irrigation during deep-water leaching operations for a minimum of two (2) weeks.
D. After Allowance Period of Soil Settlement has expired, the areas to be sodded shall be loosened to a depth of two-inches , raked, and floated to the final finished grade by a standard acceptable method. Finished areas shall be kept moist, even, and smooth, free from ridges and depressions, rocks, debris, and dirt clods, and reasonably well firmed.
E. Compaction and Final Grading: Contractor shall provi Lightly rake and roll soil with two-hundred (200) pound water-ballast roller (filled 1/3 1/2 full), and bring level firm to finish grade. Final rolling shall be at right angles to slopes to prevent erosion. Sub-soil finish grade shall be sufficiently below the final grade to allow for the thickness of the sod material. Where applicable, newly sodded areas shall blend and match with existing turf grass areas so as to produce a smooth, unified field of turf grass.
F. Application of Fertilizer: Apply the Pre-plant Starter Fertilizer evenly throughout the area to be sodded, at the prescribed application rate. Evenly distribute fertilizer by applying equal quantities in two (2) directions at right angles to each other.
G. Raking: After broadcasting starter fertilizer, lightly rake and smooth seed bed surface to 1/4 in. depth. Install sod immediately thereafter, provided the sod bed has remained in a friable condition.
H. Sodding Operations:
1. Lay sod to form a solid mass with tightly fitted butt -
2. Starter Strip: Lay first row of sod in a straight line, with subsequent rows parallel to and tightly against each other.
3. Butt ends and sides of sod; do not stretch or overlap. Stagger sod strips or pads (in a running-bond-type pattern) to offset joints in adjacent courses.
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4. Avoid damage to sub-grade or sod during installation.
5. Tamp and roll lightly to ensure full contact with sub-grade, eliminate air pockets, and form a smooth surface. Work sifted soil or fine sand into minor cracks between pieces of sod; remove excess to avoid smothering sod and adjacent grass.
6. Lay sod parallel to the lay of the sodded area. Lay sod across angle of slopes exceeding 3:1, beginning at the bottom of slope area.
7. Anchor sod on slopes exceeding 6:1 with wood stakes spaced at two (2) pegs per square yard. Provide not less than two (2) anchors per sod strip to prevent slippage.
8. Cutting: Use a sharp knife to cut sod to fit straight segments or curves (and apertures in "turfblock" paving). Trim sod in straight lines when planting beds are linear or parallel to the hardscape elements. Trim sod slabs in a smooth, continuous curve when sod edges are placed against curvilinear hardscape elements.
9. Mulch Ring at Sod in Turf Grass Areas: Trim sod in clean diameter circles around the perimeter of trees planted in turf grass areas, as indicated on the Contract Drawings. The Mulch Ring circles shall have the tree trunk located in the middle of the circle. Provide Organic Wood Mulch in these areas, at the designated thickness specified herein this Section.
10. Sod in Grass Paving: Thoroughly press sod into grass paving with walk-behind type vibrator roller. Leave 1/2 in. soil above top of rings after compaction.
I. Initial Watering: Saturate sod with fine water spray within two (2) hours of planting. Do not lay entire amount of sod before beginning watering. Water in lightly, when a relatively large area of sod has been placed.
1. During first week, water daily to supplement rainfall as necessary to maintain moist soil to a minimum depth of two-inches below the sod until sod has rooted. Repeat watering at regular intervals until sod has established itself.
2. Once established, decrease the watering frequency and increase the amount of water per application.
J. Protection on Site: Erect temporary barricades, warning signs & flags, as required. Protect the sodded areas against vehicular and pedestrian traffic until sodded areas have established growth to the satisfaction of the Owner or Landscape Architect.
K. Sod Establishment:
1. Mow and maintain turf height recommended by the turf grass nursery. Do not cut more than 40% of the total grass blade length in one (1) single mowing.
2. Replace dead or dying sod with new sod.
3. Eradicate weeds between second and third mowing. Apply herbicides uniformly at the
4. Apply a second application of the Pre-plant Starter Fertilizer uniformly to the surface at thirty (30) days after seeding.
5. Dispose of protective barricades and warning signs at the termination of the sod establishment period.
6. 3.4 OVERSEEDING SODDED TURF GRASS
A. Preparation: Prepare Sodded Turf Grass bed to receive overseeding installation. Following verticutting/mowing, scarfication, and dethatching, apply seed.
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B. Turf Grass Seeding Operations (via Hand Seeding or Mechanical Spreader):
1. Restrictions: Do not broadcast seed when winds exceed fifteen (15) mph.
2. Mechanical Seeder: Sow evenly with an accepted mechanical seeder/culti-packer that covers the seed and forms the seedbed in one (1) operation.
3. Sowing Seeds:
a. Broadcast half of the seed mix, evenly distributed over entire seed bed. b. Broadcast remaining half of seed mix at right angles to first pattern, using same method.
4. Areas inaccessible to mechanical culti-packer: Hand broadcast seed and rake seeded ground with flexible rakes. Do not change finish grades. Roll seeded area with roller weighing 150 lbs. per foot of roller width.
5. Peat Humus: Dust on 1/4 in. thick layer of Peat Humus uniformly over seeded bed.
6. Top-dress Fertilizer:
printed instructions, per 1,000 square feet, at 25 days and at 50 days after seeding.
C. Initial Watering: Water with fine spray until seed bed is moistened to a depth of four-inches
1. During first week, water daily to supplement rainfall as necessary to maintain moist soil to a minimum depth of two-inches below the surface until seed has germinated.
Repeat watering at regular intervals until seed has thoroughly and adequately established itself.
2. Protect seeded areas against hot, dry weather or drying winds. Apply supplemental water, in quantity as required, under these adverse conditions.
3. Once established, decrease the watering frequency and increase the amount of water per application, as required to maintain adequate growth.
D. Protection of Site: Erect temporary barricades, warning signs & flags, as required, protecting seeded areas against vehicular and pedestrian traffic until seeded areas have established growth to the satisfaction of the Owner or Landscape Architect.
3.5 FIELD QUALITY CONTROL
A. Tests: Samples of materials may be taken and tested for conformity to the Contract Specifications at any time by the Landscape Architect.
B. Rejected Materials: Remove rejected materials immediately from the site at Contractor's expense. Pay cost of testing of materials not meeting the Contract Specifications.
C. Intent: A consistent, thriving, and even cover of installed seed, sod, stolons, plugs, or hydromulching materials is the intent of this Section.
D. Satisfactory Installation Performance Standards:
1. Turf Grass Seed: A consistent, thriving, and even cover of installed seeding materials is the intent of this Section At the end of the Landscape Establishment Period, a healthy, uniform, close stand of seeded turf grass has been established, free of weeds and surface irregularities, at100% percent full coverage with no bare spots. Provide additional seed, as required, to meet design intent. Failure to comply with this requirement shall extend the Landscape Establishment Period accordingly until the requirement is met.
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2. Turf Grass Sod: A consistent, thriving, and even cover of installed sod materials is the intent of this Section At the end of the Landscape Establishment Period, a healthy, uniform, close stand of sodded turf grass has been established, free of weeds and surface irregularities, at100% percent full coverage with no bare spots. Provide additional sod, as required, to meet design intent. Failure to comply with this requirement shall extend the Landscape Establishment Period accordingly until the requirement is met.
3. Hydro-Mulching Applications: At the end of the Landscape Establishment Period, a healthy, uniform, close stand of hydro-mulched plant material has been established, free of weeds and surface irregularities, with coverage exceeding 95% percent coverage with with this requirement shall extend
the Landscape Establishment Period accordingly until satisfactory installation requirements are met.
3.6 CLEANING
A. Hydro-mulching Overspray: Upon completion of hydro-mulching operations, clean off any slurry overspray from drainage devices, paving surfaces, plant materials, and site or architectural features. Contractor shall exercise caution in cleaning these areas so as not to wash away previously hydro-mulched areas (as applicable).
B. Erosion: Immediately restore eroded areas. Keep adjacent paved surfaces cleaned of dirt, mud or stains and organic debris.
END OF SECTION
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SECTION 329300 EXTERIOR PLANTS
PART 1 - GENERAL
1.1 SUMMARY
A. This Section includes materials, labor, apparatus, tools, equipment, temporary construction, transportation, and services necessary for and incidental to performing the proper completion of Work, as required to make a complete Exterior Landscape Planting installation, as shown in the Contract Drawings, and as specified herein this Section.
B. Work under this Section consists of, but is not necessarily limited to, furnishing and installing the following:
1. Trees.
2. Shrubs.
3. Ground Covers.
4. Cacti, Succulents, etc.
5. Perennials.
C. Related Sections: The following Sections contain requirements that relate to Work in this Section:
1. Section 025639 Temporary Tree and Plant Protection.
2. Section 312219 Landscape Grading.
3. Section 328400 Planting Irrigation.
4. Section 329113 Soil Preparation.
5. Section 329200 Lawns and Grasses.
6. Section 329400 Landscape Planting Accessories.
7. Section 329813 Landscape Establishment Period.
1.2 DEFINITIONS AND APPLICABLE STANDARDS
A. References:
1. ASTM American Society for Testing Materials.
2. USDA United States Department of Agriculture.
3. ANSI American National Standards Institute.
B. Reference Standards:
1. An Annotated Checklist of Woody Ornamental Plants of California, Oregon, and Washington, (Number 4091), McClintock and Leiser, Division of Agricultural Sciences, University of California, 1979.
2. American National Standard for Nursery Stock (ANSI Z60.1). American National Standards Institute, and American Association of Nurserymen, Latest edition,
3. American Joint Committee on Horticultural Nomenclature, 1942 Edition of Standardized Plant Names.
4. Hortus III, 1976 Edition, Liberty Hyde Bailey Hortorium, Cornell University.
5. , 4th Edition, 1978.
6. Manual of Cultivated Conifers, Den Ouden & Boon, 1978.
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7. Datascape Guide to Commercial Nomenclature, American Nurserymen Publishing Co., Chicago, IL, 1994.
8. American National Standard for Tree Care Operation, Tree, Shrub, and Other Woody Plant Maintenance (ANSI A300), American National Standards Institute, Latest Edition.
C. Definitions:
1. Plant Material(s) Refers to living plant species, inclusive of trees, shrubs, groundcovers, vines, ornamental grasses, cacti/succulents, espaliers, annuals, perennials, etc., as indicated in the Contract Drawings.
2. Planting Area (PA) As denoted on the Contract Drawings, shall refer to areas to be installed with Plant Material(s), or areas where existing vegetation shall be protected.
3. Plant Height Measurement of main body height, not measurement to branch tip.
4. Plant Spread Measurement of main body diameter, not measurement from branch tip to branch tip.
5. Amended Planting Backfill Mixture Refer to Section 329113 Soil Preparation.
6. Balled and Burlapped Stock Healthy, vigorous exterior plants with firm, natural balls of earth in which they are grown, with ball size not less than diameter and depth recommended by ANSI Z60.1 for type and size of tree or shrub required; wrapped, tied, rigidly supported, and drum laced as recommended by ANSI Z60.1.
7. Balled and Potted Stock Healthy, vigorous exterior plants dug with firm, natural balls of earth in which they are grown and placed, unbroken, in a container. Ball size is not less than diameter and depth recommended by ANSI Z60.1 for type and size of exterior plant required.
8. Bare-Root Stock Healthy, vigorous exterior plants grown with a well-branched, fibrousroot system developed by transplanting or root pruning, with soil or growing medium removed, and with not less than minimum root spread according to ANSI Z60.1 for type and size of exterior plant required.
9. Clump Where three or more young trees were planted in a group and have grown together as a single tree having three or more main stems or trunks.
10. Container-Grown Stock Healthy, vigorous, well-rooted exterior plants grown in a container with well-established root system reaching sides of container and maintaining a firm ball when removed from container. Container shall be rigid enough to hold ball shape and protect root mass during shipping and be sized according to ANSI Z60.1 for type and size of exterior plant required.
11. Fabric Bag-Grown Stock Healthy, vigorous, well-rooted exterior plants established and grown in-ground in a porous fabric bag with well-established root system reaching sides of fabric bag. Fabric bag size is not less than diameter, depth, and volume required by ANSI Z60.1 for type and size of exterior plant.
12. Finish Grade Elevation of finished surface of planting soil.
13. Manufactured Topsoil Soil produced off-site by homogeneously blending mineral soils or sand with stabilized organic soil amendments to produce topsoil or planting soil.
14. Multi-Stem Where three (3) or more main stems arise from the ground from a single root crown or at a point right above the root crown.
15. Sub-grade Surface or elevation of subsoil remaining after completing excavation, or top surface of a fill or backfill, before placing planting soil.
16. Subsoil All soil beneath the topsoil layer of the soil profile, and typified by the lack of organic matter and soil organisms.
D. Measurements:
1. sq/ft or SF: Measurement, in square-foot.
2. O.C.: Measurement used for On-Center spacing.
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1.3 SUBMITTALS
A. General:
1. Collect information into a single Submittal for each element of construction and type of product or equipment identified under this Section for review.
2. To expedite review, Submittal shall be organized and presented into specific sections or headings. Furnish neat, concise, legible, and clearly identifiable information, and sufficiently explicit detail, to enable proper evaluation for Contract compliance. Highlight catalog, product data, or brochures containing various products, sizes, and materials to show particular item submitted.
3. Submittal Format: As applicable, furnish Submittal as a single electronic digital PDF (Portable Document Format) file.
B. Digital Submittal Information:
1. Alphabetized List of Plant Material.
2. Planting Installation Schedule:
a. Provide anticipated site area(s) and dates of installation for each type of planting.
3. Qualification Data, f or firms and persons specified in the "Quality Assurance and Control" Article to demonstrate their capabilities and experience. Include lists of completed projects with project names and addresses, names and address of architects and owners, and other information specified.
4. Meeting Notes from Pre-installation Conference.
5. Description of Plant Material, for each species indicated in the Contract Drawings, submitted in the following format:
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(Provide Color Photograph of Plant Material here)
(Note: Photograph shall include a person, tape measurer, or other scaled reference).
Project Name:
Botanical Name:
Common Name:
Form (Multi, Standard,
etc.):
Container Size (as
applicable:)
Overall Height (provide
Apical Meristem Height for
Palms):
Spread:
Caliper (as applicable):
Quantity Required (per
Contract Drawings):
Quantity Available (at
supplying Nursery):
Supplying Nursery Name:
Contact Name at Nursery:
Nursery Address:
Nursery Phone Number:
Date of Nursery Photo:
Comments/Remarks:
6. The Alphabetized List of Plant Material and Description of Plant Material shall not be construed as to acceptance of the Plant Material. All Plant Material shall be subject to review and approval by the Landscape Architect upon delivery to the Project Site.
C. Submittals under this Article will be rejected without the benefit of review by the Landscape Architect if they are difficult to read due to insufficient scale, poor image quality, or poor drafting quality; or if the required information is missing or not presented in the format as requested.
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D. No Work shall proceed under this Section until Submittal requirements indicated herein have been reviewed accordingly by the Landscape Architect.
1.4 QUALITY ASSURANCE AND CONTROL
A. Installer Qualifications:
1. Requirement: Valid California C-27 (Landscaping Contractor) License.
2. Engage an experienced Installer who has demonstrated completed landscaping work similar in material, design, and extent to that indicated for this Project and with a record of successful landscape establishment.
3. Installer's Field Supervision: Installer shall maintain an experienced full-time supervisor on the Project site during times that landscaping installations under this Section are in progress.
B. Plant Material: Provide quality, size, genus, species, and variety of Plant Material indicated, complying with applicable requirements of ANSI Z60.1 "American Standard for Nursery Stock."
1. Selection of Plant Material purchased under allowances will be made by the Owner, who has the option to tag Plant Material stock at their place of growth before they are prepared for transplanting.
2. At least one (1) plant of each Plant Material species delivered to the Project Site shall have an identification tag from supplying nursery showing botanical and common name of the plant as identified in the Contract Drawings. Landscape Architect shall be provided the opportunity for an on-site debriefing by the Contractor that identifies the size and specific type of Plant Material upon delivery.
3. Incorrect Planting Materials:
a. Replace, at no cost to Owner, Plant Material that is revealed during the course of the Contract as to being untrue to the species indicated in the Contract Drawings and reviewed accordingly under this Section.
b. Provide replacements equal to the size and quality to match the planted materials at the time the untrue species is discovered.
4. Replacement of Plant Material: Refer to the Guarantee Article indicated herein this Section.
C. Observation: Landscape Architect may observe Plant Materials at their place of growth (nursery), at the site before or after planting, or both, for compliance with requirements for genus, species, variety, size and quality. Landscape Architect also retains right to observe Plant Material further for size and condition of root balls, trunks, branches, and crowns; insects; pests; disease; weeds; injuries, and latent defects. Landscape Architect reserves the right to reject unsatisfactory and/or defective Plant Material at any time during progress of Work. Contractor shall remove rejected Plant Material immediately from Project site.
D. Regulatory Requirements:
1. Contractor shall meet the requirements of applicable laws, codes, and regulations as required by the authorities having jurisdiction over the Work.
2. Provide for inspections and permits by Federal, State, and Local authorities in furnishing, transporting, and installing materials.
E. Permits, Fees, Bonds, and Inspections: Contractor shall arrange and pay for permits, fees, bonds, and inspections necessary to perform and complete Work under this Section.
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F. Plant Material Review and Selection (Tagging):
1. At the discretion of the Landscape Architect, Plant Material will be subject to review, photographed, and selected/tagged by the Landscape Architect at the nursery, or other place of growth, prior to delivery to the Project Site. Contractor shall verify with the Landscape Architect if tagging operations are required.
2. Selecting/Tagging of Plant Materials at the nursery or place of growth does not cancel the right of the Landscape Architect to reject Plant Materials at the Project Site, if damaged or unacceptable conditions are found that were not detected at the nursery, place of growth, or in the submitted photographs.
G. Plant Material Delivery: Plant Material shall be delivered with original Plant Material tagging materials set in place, as selected and marked by the Landscape Architect at the nursery or place of growth. Contractor shall notify Landscape Architect upon deliver of Plant Material for review of stock and tagging materials. Plant Materials delivered without original tagging materials, or with broken, damaged, or altered tagging materials, shall be subject to rejection by the Landscape Architect. Rejected Plant Material shall be removed immediately.
H. Pre-installation Conference: Conduct conference at Project Site to comply with requirements of Division 1 Section "Project Meetings".
I. Protection of Existing Plant Material:
1. Refer to Requirements specified in Section 025639 Temporary Tree and Plant Protection.
2. It is the intent of the Contract Documents that certain existing Plant Materials shall be retained. Prior to the removal of any Plant Materials, the Contractor shall confer with the Landscape Architect to determine which Plant Materials are to remain.
3. All existing Plant Materials which are to remain in the project shall be tagged and identified by the Contractor prior to start of Work.
4. Contractor shall be responsible for Plant Materials that are designated to remain. Damage to any Plant Materials which results in death or permanent disfiguration of said Materials shall result in compensation outlined in Section 025639 Temporary Tree and Plant Protection. The Landscape Architect shall be the sole judge of the condition of the Plant Materials.
5. Existing Plant Materials designated to remain shall be protected at all times from damage by construction activity (tools, materials, equipment, personnel, etc.). Damage by the satisfaction of the Owner, as directed by the Landscape Architect.
6. Contractor shall insure that no foreign material and/or liquid, such as paint, concrete, cement, oil, turpentine, acid or the like, be deposited or allowed to be deposited on soil within the drip line (the outside edge of the foliage overhang) of any Plant Material. Do not store construction materials, debris, or excavated material within drip line of existing Plant Material. Should any such poisoning of the soil occur, the Contractor shall thoroughly remove said soil as directed by the Landscape Architect and replace with acceptable soil at no additional cost to the Owner.
7. Excavation adjacent to existing Plant Materials: Where it is necessary to excavate in close proximity to the drip lines of existing Plant Materials, all possible caution shall be exercised to avoid injury to roots and trunk. Excavation close to Plant Materials shall be done by hand, with narrow-tine spading forks or other approved tools to comb soil to expose roots.
Tunnel under roots two-inches ( ) and larger in diameter. Cutting of roots two-inches ( ) and larger shall be only on the approval of the Landscape Architect.
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8. Replacement of Damaged Plant Material: Replace existing Plant Material to remain as required, hat are damaged by Contractor during construction with accepted Plant Material of the same species, size, and quantity as those damaged, at no additional cost to Owner.
Owner shall be the sole judge as to the extent of the damage and the value of said damaged Plant Material.
1.5 DELIVERY, STORAGE, AND HANDLING
A. General: Do not prune Plant Material before delivery, except as approved by the Landscape Architect. Protect bark, branches, and root systems from sun scald, drying, sweating, whipping, and other handling and tying damage. Do not bend or bind-tie Plant Material in such a manner as to destroy natural shape.
1. Immediately after digging field-grown Plant Materials, pack root systems in wet straw, hay, burlap, or other suitable material to keep root system moist until final planting installation.
2. Deliver freshly dug field-grown Plant Materials with firm, natural balls of earth of sufficient depth to include fibrous and feeding roots, meeting or exceeding requirements of ANSI Z60.1 for root ball diameter.
B. Handling Plant Materials:
1. Handle balled and burlap Plant Material stock by the root ball.
2. Handle container-grown Plant Materials only by their containers.
3. DO NOT handle Plant Materials by their trunks or stems.
4. DO NOT drop any Plant Materials.
5. DO NOT bind or handle Plant Materials with wire or rope.
6. Pad trunk and branches of Plant Materials whenever using hoisting cables, chains, or straps.
7. Should the Contractor engage in handling any Plant Material(s) by any unacceptable method(s), the Landscape Architect shall reserve the right to reject any of the mishandled Plant Material(s). The Contractor shall replace rejected Plant Material(s) with approved Plant Material(s), at no additional cost to the Owner.
C. Delivery: Provide protective covering during delivery. Deliver Plant Material only after preparations for planting have been completed and install immediately. If planting is delayed more than six (6) hours after delivery, set Plant Materials in shade, protect from weather and mechanical damage, and keep roots moist. Anchor plants to prevent damage from winds.
1. Heel-in bare-root Plant Material stock. Soak roots in water for two (2) hours prior to planting.
2. Set balled Plant Material stock on ground and cover ball with soil, peat moss, sawdust, or other acceptable material.
3. DO NOT remove container-grown Plant Material stock from containers before time of planting.
4. Water root systems of Plant Material stored on site with a fine-mist spray. Water as often as necessary to maintain root systems in a moist condition.
1.6 COORDINATION, SCHEDULING, AND OBSERVATIONS
A. Acceptance: Do not install Plant Materials prior to acceptance of finish grades and installation of irrigation system.
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B. Utilities: Determine location of above grade and underground utilities and perform Work in a manner which will avoid damage to utilities. Hand excavate, as required. Maintain grade stakes until removal is mutually agreed upon by parties concerned.
C. Excavation: When conditions detrimental to plant growth are encountered, such as rubble fill, adverse drainage conditions, or obstructions, cease planting operations and notify Landscape Architect for further direction.
D. Construction Site Observations: Landscape Architect may observe installation Work herein this Section at Project Site for compliance with requirements for type, size, and quality. Landscape Architect retains right to observe installation of products and materials for defects and to reject unsatisfactory or defective product, material, or installation at any time during progress of Work.
Contractor shall remove rejected Work immediately from Project site. Contractor shall request, in writing, at least one (1) week in advance of the time when mandatory site observation(s) by the Landscape Architect are required.
1.7 PROJECT SITE CONDITIONS
A. General: Installation of Plant Materials shall be performed only during the time of day and during seasons when satisfactory results can be expected, unless authorized by the Landscape Architect.
B. Climate Restrictions: Do not install Plant Materials during rainy or inclement weather.
1.8 SUBSTITUTIONS
A. Consideration: Plant Materials to be considered equal to the Plant Materials indicated herein this Section shall be reviewed by the Landscape Architect. Plant Materials with equal performance characteristics may be considered, providing deviations in dimensional size, color, composition, operation, and/or other characteristics do not change the design concept, aesthetic appearance, or intended performance, as solely judged by the Landscape Architect. The burden of proof on product equality is on the Contractor.
1. Substituted Plant Materials shall be true to species and variety and shall conform to measurements specified, except that plants larger than specified may be used if accepted.
If larger Plant Materials are accepted, increase the ball of earth in proportion to the size of the plant, as required. Plant Materials overgrown for their container size will be rejected.
B.
of quality. This implies no right to the Contractor to substitute other materials without prior written approval by the Landscape Architect for Work under this Section.
C. Plant Materials substituted and installed by the Contractor, without prior written approval by the Landscape Architect, may be rejected. Contractor shall not be entitled to be compensated by the Owner where the Contractor has installed rejected substitutions without receiving prior written approval.
D. Contract Price: Substituted Plant Materials under this Section shall not increase the Contract price.
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1.9 WARRANTY
A. General: The Warranty indicated herein in this Article shall not deprive the Owner of other rights the Owner may have under other provisions of the Contract, and shall be in addition to, and run concurrent with, other guarantees or warranties made by the Contractor under requirements of the Contract Documents.
B. Warranty: Contractor shall warrant living Plant Materials under this Section for a period of one (1) year after date of Substantial Completion. Warrant against defects including death and unsatisfactory growth, except for defects resulting from lack of adequate maintenance, neglect, or abuse by the Owner; abnormal weather conditions unusual for the Warranty Period; or incidents which are beyond the Contractor's control.
C. Replacement of Plant Material:
1. Replace Plant Materials exhibiting conditions which are determined to be unacceptable due to workmanship by the Contractor, at no cost to the Owner, per the direction of the Landscape Architect.
2. Remove and replace dead or dying Plant Material immediately unless required to plant in the succeeding planting season.
3. Contractor shall be held responsible for a maximum of two (2) replacement of each failed Plant Material after Final Acceptance during the Warranty Period. a. Closely match replacements to adjacent specimens of the same species. Apply requirements of this Specification to replacements.
1.10 FINAL ACCEPTANCE AND LANDSCAPE ESTABLISHMENT PERIOD A. Refer to Section 329813 Landscape Establishment Period.
PART 2 - PRODUCTS
2.1 GENERAL REQUIREMENTS FOR PLANT MATERIAL
A. Immediately upon award of Contract for Work in this Section, Contractor shall locate and purchase or hold for purchase plant material as required.
1. Contractor shall verify with Landscape Architect of Plant Material that has been nursery by the Owner for use of Work under this Contract.
2. Contractor shall review the condition of the Plant Material with Landscape Architect at the nursery maintaining the Plant Material prior to delivery, and when delivered to the Project Site.
B. Quality: Plant Materials shall have a growth habit typical for each variety and species indicated in the Plant List (as detailed on the Contract Drawings).
1. All Plant Materials specified shall be superior/premium-grade nursery stock, full, densely foliated, symmetrical, with tightly knit branching, so trained or favored in development and appearance in form, number of branches, compactness and symmetry, healthy, and vigorous in growth, as reviewed and determined by the Landscape Architect.
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2. Plant Materials shall be free from insect pests, eggs and larvae, plant diseases, sun scalds, fresh bark abrasions, excessive abrasions, windburn, salt burn, weeds, or other disfigurements or conditions, as reviewed and determined by the Landscape Architect.
3. Plant Material shall be subject per the Califor
Regulations for Nursery Inspections of Rules and Grading.
4. Growing Conditions: Plant Materials shall be nursery-grown in accordance with good horticultural practices under climatic conditions similar to those of project unless otherwise specifically authorized.
C. Container Stock (excluding annuals) shall be grown in boxes or containers in which delivered for at least one (1) growing season, but not over two (2) years. Plant Material grown in boxes or containers shall be cultivated during this time to permit full rooting within the specified box or -
1. Plant Material shall be completely free of circling, kinked or girdling trunk surface and center roots, and show no evidence of a pot-bound condition.
2. No boxed nor container Plant Material shall be planted which have cracked or broken balls of earth when separated from their boxes or containers.
3. No Plant Material shall be planted with damaged roots, broken root balls, or which are -
D. Pruning:
1. Do not prune Plant Materials unless directed by the Landscape Architect.
2. Pruning of Plant Material as grown at the nursery shall conform to ANSI A300 standards.
3. Consult with Landscape Architect for pruning Plant Materials after delivery and installation.
E. Measurements: Measure Plant Material according to ANSI Z60.1 with branches and trunks or canes in their normal position. Do not prune to obtain required sizes.
1. Take caliper measurement at a point on the trunk sixfor trees up to four- at a point twelveground line for trees over four- aliper). a. Measure foliage across mean foliage dimension when branches are in their normal upright position.
b.
shall be measured from soil line after installation.
c. Height and spread dimensions specified refer to main body of plant and not branch tip to tip. Properly trimmed plants shall measure the same in any direction. If a plant is unevenly grown, it shall be classified in the size category of the smallest dimension.
2. Size Range: If a range of size is given, do not use Plant Materials less than the minimum size. The measurements specified are the minimum size acceptable and are the measurements after pruning, where pruning is required. Plant Materials that meet the measurements specified, but do not possess a normal balance between height and spread shall be rejected.
F. Field Dug Stock: Prior to digging of field-grown Plant Materials, insure that excess loose fill resulting from cultivation around trunks/stems and over roots be removed down to natural finish grade at crown of Plant Materials. During digging, verify that size of tree spade or other equipment is adequate to encompass the actively growing root zone of all Plant Materials. Plant Materials which, after digging, show mostly large fleshy roots and few fibrous roots, will be rejected.
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G. Condition of Root Systems: Plant Materials must prove to be completely free of circling, kinked or girdling trunk surface and center roots and show no evidence of a root-bound condition. Upon inspection by Landscape Architect at the job site, if five-percent (5%) or more of the plants of each species are found to contain kinked, circling or girdling roots, all plants of that species shall be rejected.
H. Unacceptable Trees: Trees that have damaged, broken, pruned, or crooked leaders will be rejected. Trees having a main leader shall not have been headed back. Trees with abrasions of the bark, sunscalds, disfiguring knots, or fresh cuts of limbs over 3/4 in. which have not completely callused will be rejected.
2.2 SHADE AND FLOWERING TREES
A. Shade and Flowering Trees: Single-stem trees with straight trunk, well-balanced crown, and intact leader, of height and caliper indicated, conforming to ANSI Z60.1 for type of trees required, subject to review and acceptance by the Landscape Architect. Container-grown trees will be acceptable and shall be subject to meeting ANSI Z60.1 limitations for container stock.
1. Branching Height: 1/2 of tree height, unless otherwise indicated on Contract Drawings.
B. Small Trees: Small upright or spreading type, branched or pruned naturally according to species and type, and with relationship of caliper, height, and branching recommended by ANSI Z60.1, subject to review and acceptance by the Landscape Architect. Container-grown trees will be acceptable and shall be subject to meeting ANSI Z60.1 limitations for container stock.
1. Form: As indicated on the Contract Drawings for individual selected species.
2.3 SHRUBS
A. Form and Size: Shrubs with not less than the minimum number of canes required by and measured according to ANSI Z60.1 for type, shape, and height of Shrub, subject to review and acceptance by the Landscape Architect. Container-grown Shrubs will be acceptable in lieu of balled and burlapped.
1. Container-grown Shrubs shall be subject to meeting ANSI Z60.1 limitations for container stock, and other requirements as indicated on the Contract Drawings.
2.4 BROADLEAF EVERGREENS
A. Form and Size: Normal-quality, well-balanced, well-rooted , broadleaf evergreens, of type, height, spread, and shape required, subject to review and acceptance by the Landscape Architect.
1. Container-grown broadleaf evergreens shall be subject to meeting ANSI Z60.1 limitations for container stock, and other requirements as indicated on the Contract Drawings.
2.5 GROUND COVERS
A. Provide ground covers full, established, and well-rooted in removable flats, containers, or integral peat pots, and with not less than the minimum number and length of runners required by ANSI Z60.1 for the container size indicated, and other requirements as indicated on the Contract Drawings, subject to review and acceptance by the Landscape Architect.
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2.6 CACTI/SUCCULENTS
A. Form and Size: Superior-quality, established, full, symmetrical, well-balanced, well-rooted, of type, height, spread, and shape required, subject to review and acceptance by the Landscape Architect.
1. Container-grown stock shall be subject to meeting ANSI Z60.1 limitations for container stock.
PART 3 - EXECUTION
3.1 EXAMINATION
A. NO WORK UNDER THIS SECTION SHALL COMMENCE UNTIL SUBMITTALS UNDER
THIS SECTION HAVE BEEN REVIEWED ACCORDINGLY BY THE LANDSCAPE ARCHITECT.
B. Prior to commencing Work under this Section, Contractor shall examine previously installed Work from other trades and verify that such Work is complete and to the point where Work herein may commence properly. Do not proceed with Work until unsatisfactory conditions have been corrected.
C. Installation practices of the Plant Materials shall be performed during those periods when weather and soil conditions are suitable and in accordance with locally accepted horticultural practices, as judged by the Landscape Architect.
1. Soil moisture levels prior to planting shall be no less than seventy-five-percent (75%) of field capacity. The determination of adequate soil moisture for planting shall be in the sole judgment of the Landscape Architect, and their decision shall be final. a. If the soil moisture level is found to be insufficient for planting installation, planting pits shall be filled with water and allowed to drain before commencing planting operations.
b. Any planting area that may become compacted in excess of eighty-five-percent (85%) relative compaction (due to construction operations or other activities during the Contract) shall be tilled and thoroughly cross-ripped to a minimum depth of nineutilities, drainage, etc. c. Do not commence planting installation prior to acceptance of Section 329113 Soil Preparation.
D. Contractor shall notify the Landscape Architect, in writing, on the anticipated commencement date and length of duration of the landscape installation.
E. Preparation of Planting Installation: Lay out individual Plant Material locations and areas for multiple plantings. Sta
prior to commencing physical planting installation.
F. At the discretion of the Landscape Architect, Contractor shall make field adjustments to the planting layout, as required, per the direction of the Landscape Architect. Layout changes made accordingly shall be performed at no additional cost to the Owner.
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G. No more Plant Materials shall be distributed in the planting area on any day than can be installed and watered on that day. Plant Materials shall be planted and watered immediately after the removal of their containers, as applicable.
H. Contractor shall protect existing and new improvements and systems installed prior to planting installation. Maintain protection in place until completion of Work and Landscape Establishment Period.
I. Finish Grades for planting areas shall have been established (per Section 312219 Landscape Grading) prior to Work under this Section. Verify that grades are within one-inch plus or minus -) of the required finish grade, and that all proper soil amendments and fertilizers have been furnished and installed accordingly as specified (per Section 329113 Soil Preparation).
1. Maintain positive surface drainage of all planted areas throughout the duration of the Contract.
J. Pre-Planting: Where Plant Materials are to be pre-planted to permit site improvements to be installed around them, Contractor shall be responsible for the accurate layout and placement of those Plant Materials, as measured to their centerlines. Confirm designated pre-planting operations with Landscape Architect prior to commencing Work. Contractor shall also be responsible for the protection of pre-planted Plant Materials while other Work is taking place around them. Provide regular irrigation, as necessary, prior to installation and functioning of irrigation systems (per Section 328400 Planting Irrigation).
3.2 EXCAVATION FOR PLANT MATERIAL
A. General: Upon completion of applicable pre-planting soil preparation requirements indicated in Section 329113 Soil Preparation, excavate planting hole(s) for Plant Material with scarified vertical sides, with the bottom of the excavated hole slightly raised and compacted at the center to assist drainage and to minimize settlement of the Plant Material. Excavate holes according to the spacing alignment (i.e. hedge spacing, grid spacing, triangular spacing, etc.) and the on-center n the Contract Drawings. Loosen any hard
subsoil in the bottom of the excavation where evident, and remove all rocks greater than one-halfin diameter, trash, debris, etc. Retain the excavated soil for use as part of the Amended Planting Backfill Mixture (as indicated in Section 329113 Soil Preparation).
1. Bare-Root Plant Material:
a. Excavate at least twenty-four-inches wider than the perimeter of the bare root spread, and deep enough to allow setting of the roots on a compacted layer of native planting soil, r is onefinished grade or as further directed by the Landscape Architect:
b. Compacted Setting Layer: Provide a crown of a minimum six- depth of native planting soil.
c. Where Tree Root Aeration Units are indicated (per Section 329400 Landscape Planting Accessories), provide further excavation in the planting hole by auger to the required minimum depth allowing for installation of the Tree Root Aeration Unit assembly.
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2. Balled and Burlap Plant Material:
a. Excavate the planting hole to the width and depth indicated in the Contract Drawings. Depth of the planting hole includes the depth indicated for the compacted setting layer at the bottom of the excavation, where the top o is oneArchitect:
b. Compacted Setting Layer: Provide a crown of a minimum sixnative planting soil. c. Where Tree Root Aeration Unit(s) are indicated (per Section 329400 Landscape Planting Accessories provide further excavation in the planting hole by auger to the required minimum depth allowing for installation of the Tree Root Aeration Unit assembly.
3. Container-Grown Plant Material:
a. Excavate the planting hole to the width and depth indicated on the Contract Drawings. Depth of the planting hole includes the depth indicated for the compacted is one-inch
Architect:
b. Compacted Setting Layer: Provide a crown of a minimum sixnative planting soil. c. Where Tree Root Aeration Unit(s) are indicated, (per Section 329400 Landscape Planting Accessories), provide further excavation in the planting hole by auger to the required minimum depth for installation of the Tree Root Aeration Unit assembly.
B. Obstructions: Notify the Landscape Architect immediately if unexpected rock, debris, contaminants, obstructions, or other items that are detrimental to the healthy sustained growth of Plant Material is encountered in the excavation process.
1. Hardpan Layer: If encountered, drill six- -draining strata or to a depth of ten- , whichever is less, and backfill with free-draining material.
C. Drainage: Notify the Landscape Architect if subsoil conditions show evidence of unexpected water seepage or retention in planting holes.
3.3 PLANTING PLANT MATERIAL
A. Bare Root Plant Material: Set Bare Root Plant Material plumb and in center of the excavated hole, with top of root ball set properly at the adjacent finish grade as indicated. Set Bare Root Plant Material in the proper spacing and/or alignment(s) as indicated on the Contract Documents, or as further directed at the Project Site by the Landscape Architect.
1. Thoroughly soak the roots of the Bare Root Plant Material in clean water for a minimum of twelve (12) hours but no more than twenty-four (24) hours to fully hydrate the root mass.
Do not soak above the root crown.
2. Remove wood shavings or other material used to keep the exposed root mass in a moist condition.
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3. Carefully place the Plant Material stock on the specified setting layer of compacted native soil, with the top of root mass set approximately one-inch ( ) above the finished grade to allow for settlement of the Plant Material within the excavated planting hole. Provide an orientation of the Plant Material that is confirmed and acceptable by the Landscape Architect. During the process of determining an acceptable orientation of the Plant Material, carefully handle the Plant Material by its trunk.
4. Prepare the Amended Planting Backfill Mixture: Amend each cubic yard (cu/yd) of native soil excavated from the planting hole by incorporating and thoroughly mixing/blending the following:
a. ¼ yard of Bulk Composted Organic Soil Amendment Material (per Section 329113 Soil Preparation).
b. ½ pound of Granular Soil Conditioning Material & Fertilizer (per Section 329113 Soil Preparation).
c. Add Mycorrhizal Inoculum to the excavated native soil, (per Section 329113 Soil Preparation t printed instructions.
1) Pending the results of the Agronomic Soil Fertility Report, the Amended Planting Backfill Mixture may be modified accordingly to include additional soil amendments or fertilizers (gypsum, iron, potash, etc.) or the ratios as indicated in the Mixture indicated above may be modified. a) The cost of providing modifications to the Amended Planting Soil Backfill Mixture (as recommended through the Agronomic Soil Fertility Report and as directed by the Landscape Architect) shall be borne by the Contractor.
5. Install the Tree Root Aeration Unit(s) prior to backfilling operations, as required (per Section 329400 Landscape Planting Accessories).
6. Backfilling the excavated planting hole:
a. Place the Amended Planting Backfill Mixture around the Plant Material root mass in the excavated planting hole. Place the Mixture in sixlift accordingly to settle the Mixture and eliminate voids and air pockets. b. Maintain the Plant Material plumb while working the Mixture around the root mass.
When the planting hole is approximately half-backfilled, water thoroughly before placing the remainder of the Mixture.
c. Add the Fertilizer Tablets and other amendments, (per Section 329113 Soil Preparation) as required, at the prescribed application rates (as indicated per Section 329113 Soil Preparation) latest printed
instructions.
d. Place the final layers of the Amended Planting Backfill Mixture, tamping accordingly, to the top of the root mass.
e. Dish and tamp top of the Mixture to form a threef. Thoroughly mix together water and Plant Vitamin/Hormone Stimulant in application ratio as recommended by Stimulant Manufacture (per Section 329400 Landscape Planting Accessories). Apply liquid matrix in sufficient quantity to thoroughly saturate the basin to settle the Mixture, and to eliminate voids and air pockets. Should any portions of the root mass be exposed, add additional Mixture as needed to thoroughly cover the root mass.
7. Mulching: Apply mulch in watering basins as indicated on the Contract Drawings. Refer to Section 329400) Landscape Planting Accessories for type and requirements.
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B. Balled and Burlapped Plant Material: Set the Balled and Burlapped Plant Material plumb and in center of the excavated hole, with top of the root ball raised above adjacent finish grade as indicated. Set Balled and Burlapped Plant Material in the proper spacing and/or alignment(s) as indicated on the Contract Documents, or as further directed at the Project Site by the Landscape Architect.
1. Carefully place the Balled and Burlapped Plant Material stock on the specified setting layer of compacted native soil, with the top of root ball set one- above the finished grade to allow for settlement of the Plant Material within the excavated planting hole. Provide the orientation of the Plant Material that is confirmed and accepted by the Landscape Architect. During the process of determining an acceptable orientation of the Plant Material, handle the Plant Material by its root ball; avoid handling the Plant Material by its trunk.
2. Once orientation is accepted, carefully remove the burlap and wire baskets from the tops of the root ball and partially from the sides, but do not remove from under the root ball.
Do not damage the root ball or any part of the plant. Plant Material shall be rejected if the root ball is cracked or broken before or during the planting operation.
3. Prepare the Amended Planting Backfill Mixture: Amend each cubic yard (cu/yd) of native soil excavated from the planting hole by incorporating and thoroughly mixing/blending the following:
a. ¼ yard of Bulk Composted Organic Soil Amendment Material (per Section 329113 Soil Preparation).
b. ½ pound of Granular Soil Conditioning Material & Fertilizer (per Section 329113 Soil Preparation).
c. Add Mycorrhizal Inoculum to the excavated native soil, (per Section 329113 Soil Preparation), per the
1) Pending the results of the Agronomic Soil Fertility Report, the Amended Planting Backfill Mixture may be modified accordingly to include additional soil amendments or fertilizers (gypsum, iron, potash, etc.) or the ratios as indicated in the Mixture indicated above may be modified. a) The cost of providing modifications to the Amended Planting Soil Backfill Mixture (as recommended through the Agronomic Soil Fertility Report and as directed by the Landscape Architect) shall be borne by the Contractor.
4. Install the Tree Root Aeration Unit(s) prior to backfilling operations, as required (per Section 329400 Landscape Planting Accessories.
5. Backfilling the excavated planting hole:
a. Place the Amended Planting Backfill Mixture around the root ball in the excavated planting hole. Place the Mixture in sixto settle the Mixture and eliminate voids and air pockets. b. Maintain the plant plumb while working the Mixture around the root ball. When the planting hole is approximately half-backfilled, water thoroughly before placing the remainder of the Mixture.
c. Add the Fertilizer Tablets and other amendments, (per Section 329113 Soil Preparation) as required, at the prescribed application rates indicated herein this d. Place the final layers of the Mixture, tamping accordingly, to the top of the root ball.
Do not place the Mixture on top of the root ball.
e. Dish and tamp top of the Mixture to form a threeDo not cover the top of the root ball with the backfill mixture.
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f. Thoroughly mix together water and Plant Vitamin/Hormone Stimulant in application ratio as recommended by Stimulant Manufacture (per Section 329400 Landscape Planting Accessories). Apply liquid matrix in sufficient quantity to thoroughly saturate the basin to settle the Mixture, and to eliminate voids and air pockets. Should any portions of the root mass be exposed, add additional Mixture as needed to thoroughly cover the root mass.
6. Mulching: Apply mulch in watering basins as indicated on the Contract Drawings. Refer to Section 329400 Landscape Planting Accessories for type and requirements.
C. Container-Grown Plant Material: Set Container-Grown Plant Material plumb and in the center of the excavated planting hole, with top of the root ball raised above adjacent finish grade as indicated. Set Container-Grown Plant Material in the proper spacing and/or alignment(s) as indicated on the Contract Documents, or as further directed at the Project Site by the Landscape Architect.
1. For plastic container stock ( 1-gallon, 5-gallon, 15-gallon, etc.), carefully remove the plant container prior to setting the plant in the excavated hole so as not to damage root ball. Tip container to horizontal position and shake carefully to remove Plant Material.
Support root ball during installation to prevent cracking or shedding of soil.
2. Set the Plant Material stock on the specified setting layer of compacted native soil, with the top of root ball set one- above the finished grade to allow for settlement of the Plant Material within the excavated planting hole. Provide the orientation of the Plant Material that is confirmed and accepted by the Landscape Architect. During the process of determining an acceptable orientation of the plant material, carefully handle the Plant Material by its container; avoid handling the Plant Material by its trunk. a. Plant Material with a damaged root ball upon removal of the container, or if the root ball fails to thoroughly hold the soil as it is removed from the container, or if the plant is mishandled or damaged during planting operations, shall be rejected.
3. For wooden boxed container stock, carefully set whole boxed container of the Plant Material stock on the specified setting layer of compacted native soil, with the top of root ball set one-inch ( ) above the finished grade to allow for settlement of the Plant Material within the excavated planting hole. Provide the orientation of the Plant Material that is confirmed and accepted by the Landscape Architect. During the process of determining an acceptable orientation, carefully handle the Plant Material by its container; avoid handling the Plant Material by its trunk or branches. Once orientation is accepted, remove the steel strapping and the sides of the wooden container so as not to damage the root ball or any part of the plant. Do not remove the bottom of the wooden container. Discard sides. a. Plant Material with a damaged root ball upon removal of the container, or if the root ball fails to thoroughly hold the soil as it is removed from the container, or if the plant is mishandled or damaged during planting operations, shall be rejected.
4. Scarification: After removing container from plant, scarify the sides of the root ball to a depth of one- -spaced locations around the perimeter
of the root ball or at twelveCut and remove circling roots over 3/8 in. diameter.
5. Prepare the Amended Planting Backfill Mixture: Amend each cubic yard (cu/yd) of native soil excavated from the planting hole by incorporating and thoroughly mixing/blending the following:
a. ¼ yard of Bulk Composted Organic Soil Amendment Material (per Section 329113 Soil Preparation).
b. ½ pound of Granular Soil Conditioning Material & Fertilizer (per Section 329113 Soil Preparation).
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c. Add Mycorrhizal Inoculum to the excavated native soil, (per Section 329113 Soil Preparation),
1) Pending the results of the Agronomic Soil Fertility Report, the Amended Planting Backfill Mixture may be modified accordingly to include additional soil amendments or fertilizers (gypsum, iron, potash, etc.) or the ratios as indicated in the Mixture indicated above may be modified. a) The cost of providing modifications to the Amended Planting Soil Backfill Mixture (as recommended through the Agronomic Soil Fertility Report and as directed by the Landscape Architect) shall be borne by the Contractor.
6. Install the Tree Root Aeration Unit(s) prior to backfilling operations, as required (per Section 329400 Landscape Planting Accessories).
7. In areas where indicated on the Contract Drawings, install the Deep Watering Bubblers as part of the irrigation system.
8. Backfilling the excavated planting hole:
a. Place the Amended Planting Backfill Mixture around the root ball in the excavated planting hole. Place the Mixture in sixto settle the Mixture and eliminate voids and air pockets. Foot tamp the backfill, as required.
b. Maintain the plant plumb while working the Mixture around the root ball. When the planting hole is approximately half-backfilled, water thoroughly before placing the remainder of the Mixture.
c. Add the Fertilizer Tablets and other amendments (per Section 329113 Soil Preparation) as required, at the prescribed application rates indicated herein this d. Place the final layers of the Mixture, tamping accordingly, to the top of the root ball.
Do not place the Mixture on top of the root ball.
e. Dish and tamp top of the Mixture to form a threeDo not cover the top of the root ball with the backfill mixture. f. Thoroughly mix together water and Plant Vitamin/Hormone Stimulant in application ratio as recommended by Stimulant Manufacture (per Section 329400 Landscape Planting Accessories). Apply liquid matrix in sufficient quantity to thoroughly saturate the basin to settle the Mixture, and to eliminate voids and air pockets. Should any portions of the root mass be exposed, add additional Mixture as needed to thoroughly cover the root mass.
9. Mulching: Apply mulch in watering basins as indicated on the Contract Drawings. Refer to Section 329400 Landscape Planting Accessories for type and requirements.
D. Plant Settling and Orientation: Plant Material that has settled deeper than the surrounding grade shall be excavated and raised to the correct level, to the satisfaction of the Landscape Architect.
Plant Material installed without direction and/or approval as to its proper orientation shall be subject to excavation and acceptable orientation, to the satisfaction of the Landscape Architect.
E. Fertilizer Tablet(s) Application Rate: Refer to Section 329113 Soil Preparation.
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3.4 PLANTING GROUND COVERS
A. General: Upon completion of applicable pre-planting soil preparation requirements indicated in Section 329113 Soil Preparation, excavate planting hole(s) for Ground Covers and/or Vine Plant Material with scarified vertical sides, with the bottom of the excavated hole slightly raised and compacted at the center to assist drainage and to minimize settlement of the Plant Material. Refer to requirements indicated in Part III of this Section for Excavation.
1. Plant Settling: Plant Material that has settled deeper than the surrounding grade shall be raised to the correct level.
B. Excavate holes according to the spacing alignment (i.e. triangular spacing, etc.) and the on-center subsoil in the bottom of the excavation where evident, and remove all rocks greater than one-halfi ameter, trash, debris, etc.
C. Obstructions: Notify the Landscape Architect immediately if unexpected rock, debris, contaminants, obstructions, or other items that are detrimental to the healthy sustained growth of Plant Material is encountered in the excavation process.
D. Ground Covers: Follow applicable planting requirements per Articles 3.02 and 3.03 indicated herein this Section.
1. Carefully set root mass into excavated hole, spreading roots, and backfill with planting soil.
2. Add Fertilizer Tablets and other amendments, as required, within backfill.
3. Work soil around roots to eliminate air pockets, and provide a slight saucer indentation around plants to retain surface water.
4. Water thoroughly after planting, taking care not to cover plant crowns with wet soil.
3.5 PRUNING PLANT MATERIAL
A. At no time shall Plant Material be pruned, trimmed, thinned, shaped, or topped prior to delivery.
Pruning, trimming, thinning, shaping, or topping of Plant Material shall be only conducted on the Project Site, and under the presence and direction of the Landscape Architect or approved Certified Arborist. Plant Material that has been pruned and delivered to the Project Site without prior approval by the Landscape Architect or an approved Certified Arborist will be rejected.
B. When directed by the Landscape Architect or an approved Certified Arborist, Contractor shall prune, thin, and shape plant material, according to standard horticultural practice, to preserve the natural character of the Plant Material.
1. Pruning and remedial work shall be done per ANSI A300.
2. Prune trees to retain required height and spread. Do not cut tree leaders; remove only injured or dead branches from trees.
3. Prune shrubs accordingly to retain natural character.
4. Provide pruning, cabling and bracing, irrigation, pest and disease control and other remedial treatments as recommended to assure the long-term health of the trees and existing vegetation, and the safety of persons and property.
5. Newly planted trees shall be pruned near the termination of the Landscape Establishment Period, per the direction of the Landscape Architect, as required.
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3.6 CLEAN UP AND PROTECTION
A. During installation operations, keep Work area in an orderly and safe condition. Contractor shall remove trash caused from his Work on a weekly basis throughout the duration of the Work.
B. Protect landscaping 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 his Work under this Section, the Contractor shall remove rubbish, waste, debris, excess construction materials, surplus soil and other items resulting from construction operations and lega
D.
E. Remove equipment and implements of service, and leave the entire Project Site area in a neat, clean, and Owner-approved condition.
F. Labels: Remove all nursery-type labels, flags, and or identification markings from Plant Materials.
3.7 FINAL REVIEW
A. Final Review under this Section shall be performed upon completion of the Landscape Establishment Period. Refer to Section 329813 Landscape Establishment Period, for requirements.
END OF SECTION
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SECTION 329400 LANDSCAPE PLANTING ACCESSORIES
PART 1 - GENERAL
1.1 SUMMARY
A. This Section includes materials, labor, apparatus, tools, equipment, temporary construction, transportation, and services necessary for and incidental to performing the proper completion of Work, as required to make a complete exterior Landscape Planting Accessories installation, as shown in the Contract Drawings, and as specified herein this Section.
B. Work under this Section consists of, but is not necessarily limited to, furnishing and installing the following:
1. Mulches (wood products).
2. Weed Control Barrier / Geotextile Filter Fabric.
3. Miscellaneous Materials (Herbicides, Vitamin Stimulant/Root Hormone, etc.).
C. Related Sections: The following Sections contain requirements that relate to Work in this Section:
1. Section 312219 Landscape Grading.
2. Section 328400 Planting Irrigation
3. Section 329113 Soil Preparation.
4. Section 329200 Lawns & Grasses.
5. Section 329300 Exterior Plants.
6. Section 329813 Landscape Establishment Period.
1.2 DEFINITIONS AND APPLICABLE STANDARDS
A. References:
1. ASTM American Society for Testing and Materials.
2. ANSI American National Standards Institute.
B. Definitions: (Not Used).
C. Measurements:
1. PSI: Measurement, in pounds per square inch.
2. CU/FT: Measurement, in cubic-foot.
3. PPM: Measurement, in parts per million.
1.3 SUBMITTALS
A. General:
1. Collect information into a single Submittal for each element of construction and type of product or equipment identified under this Section for review.
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2. To expedite review, Submittal shall be organized and presented into specific sections or headings. Furnish neat, concise, legible, and clearly identifiable information, and sufficiently explicit detail, to enable proper evaluation for Contract compliance.
Highlight catalog, product data, or brochures containing various products, sizes, and materials to show particular item submitted.
3. Submittal Format: As applicable, furnish Submittal as a single electronic digital PDF (Portable Document Format) file.
B. Digital Submittal Information:
1. Product/Material Data. Submit available product/material literature supplied by Provide manufacturing source (name, address, and telephone number), and distributor source (name, address, and telephone number) for each type of product/material.
2. similar Landscape Planting Accessories installations.
C. Material Samples: Submit four (4) sets of physical Material Samples for review of kind, color, pattern, size, and texture for a check of these characteristics with other elements, and for a comparison of these characteristics between Submittal and actual component as delivered and installed. Include the full range of exposed color and texture expected in the completed Work.
Provide Material Samples bound and individually wrapped in re-sealable labeled 1-gallon plastic bags (as applicable):
1. 0.50 cubic foot of Landscape Mulch Material (Shredded Wood Mulch).
2. One (1) two- -
3. One (1) set of Tree Tying/Staking Materials for each type used, as applicable.
4. One (1) set of Tree Guying Materials for each type used, as applicable.
5. One (1) two- -
for each type used, as applicable.
D. Scaled Shop Drawings: Not Required.
E. Field-Constructed Mock-ups: Not Required.
F. Submittals under this Article will be rejected and returned without the benefit of review by the Landscape Architect if they are difficult to read due to insufficient scale, poor image quality, or poor drafting quality; or if all of the required information is missing or not presented in the format as requested. Partial Submittals will not be accepted.
G. No Work shall proceed under this Section until Submittal requirements indicated herein have been reviewed accordingly by the Landscape Architect.
1.4 QUALITY ASSURANCE AND CONTROL
A. Installer Qualifications:
1. Requirement: Valid California C-27 (Landscaping Contractor) License.
2. Engage an experienced Installer who has completed Landscape Planting Accessories work similar in material, design, and extent to that indicated for this Project and with a record of successful installation.
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3. Installer's Field Supervision: Installer shall maintain an experienced full-time supervisor on the Project site during times that installations under this Section are in progress.
B. Observation: Landscape Architect may observe installation of Landscape Planting Accessories at Project Site for compliance with requirements for type, size, and quality. Landscape Architect retains right to observe Landscape Planting Accessories for defects and to reject unsatisfactory or defective material at any time during progress of Work. Contractor shall remove rejected Accessories immediately from Project site.
C. Manu anufactur
Manufacturers of articles used in this Section furnish directions covering points not shown in the Contract Drawings and Contract Specifications.
D. Permits, Fees, Bonds, and Inspections: Contractor shall arrange and pay for permits, fees, bonds, testing services, and inspections necessary to perform and complete Work under this Section.
E. Single-Source Responsibility: Obtain each color, type, and variety of products/materials from a single source with resources to provide products/materials of consistent quality in appearance and physical properties without delaying Work.
1.5 DELIVERY, STORAGE, AND HANDLING
A. Provide new, unused materials indicated under this Section. Store and secure properly to prevent theft or damage. Deliver and store perishable material in original, unopened packaging.
B. Damaged Materials: Be responsible for all damage or disfiguration of Work until Final Acceptance. Remove off site and replace at no additional cost to Owner all damaged or rejected materials.
C. Deliver materials so as to not delay Work, and install only after preparations for installation have been completed.
1.6 COORDINATION, SCHEDULING, AND OBSERVATIONS
A. Utilities: Determine location of above grade and underground utilities and perform Work in a manner which will avoid damage to utilities. Hand excavate, as required. Maintain grade stakes until removal is mutually agreed upon by parties concerned.
B. Excavation: When conditions detrimental to installing Landscape Planting Accessories are encountered, such as rubble fill, adverse drainage conditions, or obstructions, cease installation operations and notify Landscape Architect for further direction.
C. Field Measurements: Contractor shall take field measurements as required. Report major discrepancies between the Contract Drawings and field dimensions to the Landscape Architect prior to commencing Work.
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D. Installation: Perform installation of Landscape Planting Accessories only when weather and soil conditions are suitable in accordance with locally accepted practices.
E. Construction Site Observations: Contractor shall request, in writing, at least one (1) week in advance of the time when mandatory site observation(s) by the Landscape Architect are required.
1.7 SUBSTITUTIONS
A. Consideration: Materials to be considered equal to the Materials indicated herein this Section shall be reviewed by the Landscape Architect. Materials with equal performance characteristics pr
in dimensional size, color, composition, operation, and/or other characteristics do not change the design concept, aesthetic appearance, nor intended performance, as solely judged by the Landscape Architect. The burden of proof on product equality is on the Contractor.
B. ndards
of quality. This implies no right to the Contractor to substitute other materials without prior written approval by the Landscape Architect for Work under this Section.
C. Materials substituted and installed by the Contractor, without prior written approval by the Landscape Architect, may be rejected. Contractor shall not be entitled to be compensated by the Owner where the Contractor has installed rejected substitutions without receiving prior written approval.
D. Contract Price: Substituted Materials under this Section shall not increase the Contract price.
1.8 LANDSCAPE ESTABLISHMENT PERIOD
A. Refer to Section 329813 Landscape Establishment Period, for requirements under this Article.
1. During the duration of the Landscape Establishment Period, continuously maintain Landscape Planting Accessories by tightening, holding plumb, and/or repairing Staking and/or Guying supports, providing adequate depths and coverage requirements of Landscape Mulching Materials, monitoring drainage within Tree Root Aeration Units, hold Edging Materials true and in proper alignments, and other requirements, as required, to establish healthy, viable landscape planting materials until Final Acceptance of Work is granted.
PART 2 - PRODUCTS
2.1 LANDSCAPE MULCH MATERIALS
A. Shredded Wood Mulch: Shredded Wood Mulch, free from deleterious materials, debris, and weed seed. Suitable as a top dressing of trees, shrubs and groundcovers, consisting of following:
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1. Type: Shredded cedar, redwood, fir, or hardwood commercial wood bark products, composted with humus and leaf materials. Shredded Wood Mulch shall be graded and to average dimensions of one- -inches (3 ngth, and flat in crosssection. a. Minimum organic matter content at 80%.
b. pH between 5.0 and 8.0.
c. S
extract.
d. Boron content of the saturated extract shall be less than 1.0 parts per million. e. Calcium carbonate shall not be present.
f. Carbon:Nitrogen ratio is less than 100:1.
g. Compost shall be aerobic without malodorous presence of decomposition products. h. Maximum particle size shall be 2 inches. A maximum of 5% shall pass a No. 2 screen.
Maximum Total Permissible Pollutant
Concentrations (in parts per million
(PPM)) on a dry weight basis:
Arsenic 20 ppm
Molybdenum 30 ppm
Cadmium 15 ppm
Nickel 50 ppm
Chromium 150 ppm
Selenium 25 ppm
Cobalt 50 ppm
Silver 10 ppm
Copper 150 ppm
Vanadium 50 ppm
Lead 150 ppm
Zinc 150 ppm
Mercury 10 ppm
2. Coverage Depth:
a. Refer to Part 3 indicated herein this Section.
3. Products & Manufacturer s: Subject to compliance with requirements, provide products by one (1) of the following:
a. ES-2 Mulch, Agromin Horticultural Products.
b. , Greenways Environmental.
c. Walk-On Chips, Earthworks Soil Amendments, Inc.
d. Landscape Mulch, Agri Service, Inc.
e. Red Fir Bark, Greenway Compost.
f. A-1 Oak Deco Chips, Hanson Aggregates/A-1 Soils.
g. #SBM 3, Special Mulch #3, Plants Choice, Inc.
h. Or equal, as approved by the Landscape Architect.
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2.2 WEED CONTROL BARRIER/GEO-TEXTILE FILTER FABRIC
A. Type: Permeable, lightweight, continuous, non-woven, geo-textile polypropylene filament material, UV-resistant, engineered to allow water permeability and deter soil permittivity, per ASTM D4491. Geo-Textile Filter Fabric shall be inert to biological degradation and resistant to naturally encountered chemicals, alkalis and acids. Meet AASHTO M288-96, Class 1.
B. Subject to compliance with requirements, provide products by one (1) of the following:
1. Amoco 4553, Amoco Fabrics and Fibers Company.
2. FX-80HS, Carthage Mills.
3. C-80NW, Contech.
4. 180 EX, Linq.
5. Geotex 801, Propex, Inc.
6. TerraTex N08, Webtec.
7. 180N, TC Mirafi.
8. 3301, Typar Landscape Products.
9. Or equal, as approved by the Landscape Architect.
2.3 MISCELLANEOUS MATERIALS
A. Water: Per ASTM C94, from potable domestic source, and free from deleterious materials such as oils, acids, and organic matter. Transport as required.
B. Stress Reducing Agent: 100% natural organic root and plant stimulator solution, used to eliminate transplant shock and provide better establishment of plants. Solution shall contain a natural wetting agent, designed to improve nutrient release, water-holding capacity, cation exchange capacity in soil, and stimulate fertilizer and micronutrient uptake.
1. Subject to compliance with requirements, provide products by one (1) of the following:
a. Roots NoBurn®, Novozymes Biologicals, Inc., Salem, VA. b. Essential® Plus 1-0-1, Growth Products, White Plains, NY.
2. recommendations.
C. Wetting Agent and Soil Penetrant (Surfactant): Highly-concentrated liquid solution. Provide in a diluted liquid solution, mixed with water, at the time of watering-in recently planted plant species.
1. Products & Manufacturer s: Subject to compliance with requirements, provide products by one (1) of the following:
a. Roots NoBurn®, Novozymes Biologicals, Inc., Salem, VA. b. LESCO- Lesco, Inc., Cleveland, OH.
c. Naiad Liquid Wetting Agent, Naiad Company, Inc., Stockton, CA. d. Aqua-Gro L, Scotts Company, Marysville, OH.
e. Sixteen-90, Aquatrols, Cherry Hills, NJ.
f. Or equal, as approved by the Landscape Architect.
2. recommendations, per one-hundred (100) gallons of water.
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D. Plant Vitamin/Hormone Stimulant: Highly-concentrated liquid vitamin solution. Provide in a diluted liquid solution, mixed with water, at the time of watering-in recently planted plant species.
1. Subject to compliance with requirements, provide products by one (1) of the following:
a. SUPERthrive, Vitamin Institute.
b. Roots Concentrate Rooting Stimulant, Novozymes Biologicals, Inc. c. Root-Maxx Plus, Bio-Plex.
d. Or equal, as approved by the Landscape Architect.
2. Application Rate: Provide at prescribed rate and
recommendations, per one-hundred (100) gallons of water.
E. Herbicides: EPA registered and approved, from the following:
1. Non-Selective Post-Emergent Herbicide: Spray-applied solution containing a minimum of 41% of the
a. Products & Manufacturer s: Subject to compliance with requirements, provide products by one (1) of the following:
1) Roundup® PRO, (41% glyphosate), Monsanto Company.
2) Roundup® PROmax (concentrate, 50% glyphosate), Monsanto Company. 3) Honcho® Plus, (41% glyphosate), Monsanto Company.
4) Prosecutor (41% glyphosate), LESCO, Inc.
5) High Yield® Kill-Zall Weed & Grass Killer, (41% glyphosate), Voluntary Purchasing Groups.
6) Or equal, as approved by the Landscape Architect.
b.
written recommendations, per one-hundred (100) gallons of water.
2. Selective Pre-Emergent Herbicide (Packaged dry material application): Pre-emergent control of annual grasses and broadleaf weeds in turf grass areas, and woody ornamental trees, shrubs, vines, and groundcover areas.
a. Products & Manufacturer s: Subject to compliance with requirements, provide products by one (1) of the following:
1) Ronstar® 2G, (granular), Aventis Environmental Science USA. 2) Snapshot® 2.5 GT (granular), (2% trifluralin), Dow AgroSciences LLC. 3) XL*2G, SETRE Chemical Company.
4) Casoron 4G, Chemtura.
5) Treflan® HFP (43% trifluralin), Dow AgroSciences LLC. 6) Treflan® TR-10, (10% Granular trifluralin), Dow AgroSciences LLC. 7) Surflan®, Dow AgroSciences, LLC.
8) Or equal, as approved by the Landscape Architect.
b.
written recommendations, per one-hundred (100) gallons of water.
3. Selective Post-Emergent Herbicide: Pre-mixed, flow-able formulation designed for product stability, uniformity in the spray solution and ease of handling. Post-emergent control of annual grasses, nutsedge, and broadleaf weeds in turf, generally with one (1) application.
a. Products & Manufacturer s: Subject to compliance with requirements, provide products by one (1) of the following:
1) Trimec® Plus, PBI/Gordon Corporation.
2) Three-Way, LESCO, Inc.
3) Or equal, as approved by the Landscape Architect.
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b.
written recommendations, per one-hundred (100) gallons of water.
PART 3 - EXECUTION
3.1 GENERAL
A. Installation practices of the Landscape Planting Accessories shall be performed during those periods when weather and soil conditions are suitable and in accordance with locally accepted horticultural practice, as approved by the Landscape Architect. Contractor shall notify the Landscape Architect, in writing, on the anticipated commencement date and length of duration of the landscape installation.
B. Examination: Examine areas to receive landscaping for compliance with requirements and for conditions affecting performance of Work of this Section. No work under this section shall commence until all submittals under this section have been reviewed and approved, in writing.
Do not proceed with installation until unsatisfactory conditions have been corrected.
C. Prior to Work in this Section, Contractor shall examine previously installed Work from other trades and verify that such Work is complete and as required, to the point where the installation of the Landscape Planting Accessories may commence properly.
3.2 PROTECTION OF SITE
A. Contractor shall protect existing and new improvements and systems installed prior to installation of Landscape Planting Accessories. Maintain protection in place until completion of Work and Landscape Establishment Period.
3.3 MULCHING
A. General: Mulch backfilled surfaces of pits, trenches, planted areas, and other areas indicated.
B. Shredded Wood Mulch:
1. General: Verify locations to receive Shredded Wood Mulch.
2. Apply the following average thickness of Shredded Wood Mulch, and finish level with adjacent finished surfaces. Do not place Shredded Wood Mulch directly against trunks or stems of Plant Materials. Remove Shredded Wood Mulch that is placed against the growing bases or within the basal nodes of plants.
3. Thickness/Depth: Three-inches , minimum.
4. While settlement and/or decomposition of the Shredded Wood may occur during the duration of the Contract, the Shredded Wood Mulch thickness as indicated shall be consistent throughout the duration of the Contract. The Contractor shall provide additional Shredded Wood Mulch, as needed, and as directed by the Landscape Architect, to maintain the specified constant thickness of the Shredded Wood Mulch, until Acceptance of Work is granted.
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3.4 INSTALLATION OF MISCELLANEOUS MATERIALS
A. Anti-Dessicant: Apply using power spray to provide an adequate film over trunks, branches, stems, twigs, and foliage.
1. When deciduous trees or shrubs are moved in full-leaf, spray with anti-desiccant at nursery before moving and again two (2) weeks after planting.
B. Stress Reducing Agent: Apply, as required and directed by the Landscape Architect, per C. Wetting Agent & Soil Penetrant: Apply, as required and directed by the Landscape Architect, ctions.
D. Herbicides: Apply, as required and
latest printed instructions.
E. Plant Vitamin/Root Stimulant: Apply,
to application requirements per Section 329300 Exterior Plants.
3.5 CLEAN UP AND PROTECTION
A. For Work under this Section, keep Work area in a clean, orderly, and safe condition. Contractor shall remove trash caused from his Work on a weekly basis throughout the duration of the Work.
B. Protect landscaping from damage due to landscape operations, operations by other Contractors and trades, and trespassers. Maintain protection during installation and landscape establishment periods. Treat, repair, or replace damaged Landscape Planting Accessories as directed.
C. Upon completion of his Work under this Section, the Contractor shall remove rubbish, waste, debris, excess construction materials, and other items resulting from construction operations offsite as described herein this Section and directed by the Landscape Architect.
3.6 FINAL REVIEW
A. Final Review under this Section shall be performed upon completion of the Landscape Establishment Period. (Refer to Section 329813 Landscape Establishment Period for requirements).
END OF SECTION
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SECTION 329813 LANDSCAPE ESTABLISHMENT PERIOD
PART 1 - GENERAL
1.1 SUMMARY
A. This Section includes materials, labor, apparatus, tools, equipment, temporary construction, transportation, and services necessary for and incidental to performing the proper completion of Work, as required to make a complete Landscape Establishment Period , as specified during progress of the Work, after installation, for a designated period after Preliminary Acceptance, as shown in the Contract Drawings, and as specified herein this Section.
B. Contractor acknowledges that the Services specified under this Section are not intended to express every detail of the Services to be provided by Contractor, and Contractor hereby represents that it is experienced and competent in providing Services that meets or exceeds generally accepted practices commensurate with those provided by other companies that provide such Service.
C. Work under this Section consists of, but is not necessarily limited to, furnishing and installing the following:
1. Establishment of Landscape Installation, for a given frequency and duration as specified herein this Section. Work includes the following:
a. Litter Control.
b. Weed Control.
c. Pest Control.
d. Plant Care.
e. Fertilization of Plant Materials.
f. Plant Replacement.
g. Plant Pruning.
h. Plant Staking and Adjustments.
i. Temporary Plant Protection.
j. Operation, Adjustment, and Maintenance of Irrigation Controller and Irrigation System.
k. Cleaning of Paving Surfaces.
l. Reapplication of Mulching Materials.
m. Erosion Control and Drainage.
n. Removal of Green Waste.
D. Related Sections: The following Sections contain requirements that relate to Work in this Section:
1. Section 312219 Landscape Grading.
2. Section 321513 Stabilized Decomposed Granite (Site Paving & Landscape Mulch).
3. Section 328400 Planting Irrigation
4. Section 329113 Soil Preparation.
5. Section 329200 Lawns & Grasses.
6. Section 329300 Exterior Plants.
7. Section 329400 Landscape Planting Accessories.
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1.2 DEFINITIONS AND APPLICABLE STANDARDS
A. References:
1. USDA United States Department of Agriculture.
2. ASTM American Society for Testing & Materials.
3. ANSI American National Standards Institute.
4. ISA International Society of Arboriculture.
B. Standards:
1. American National Standard for Tree Care Operation, Tree, Shrub, and Other Woody Plant Maintenance (ANSI A300), American National Standards Institute, Latest Edition.
2. American National Standard for Tree Care Operations (ANSI Z133), American National Standards Institute, Latest Edition.
3. Tree Pruning Guidelines, International Society of Arboriculture, 1995 Edition.
4. Pruning Standards for Shade Trees, National Arborists Association, Latest Edition.
1.3 SUBMITTALS
A. General:
1. Collect information into a single Submittal for each element of construction and type of product or equipment identified under this Section for review.
2. To expedite review, Submittal shall be organized and presented into specific sections or headings. Furnish neat, concise, legible, and clearly identifiable information, and sufficiently explicit detail, to enable proper evaluation for Contract compliance.
Highlight catalog, product data, or brochures containing various products, sizes, and materials to show particular item submitted.
3. Submittal Format: As applicable, furnish Submittal as a single electronic digital PDF (Portable Document Format) file.
B. Digital Submittal Information:
1. Quality Control Submittal:
a.
similar Landscape Planting Accessories installations.
b. Schedule of maintenance operations and monthly status report, including list of equipment, materials proposed for the job, and watering schedule(s). c. Licenses, permits and insurance required by the local jurisdiction, the State, or Federal government, pertaining to Work under this Section. 1) Pesticide Applicator: Valid California Qualified Applicator Certificate the California Department of Pesticide Regulation (DPR). d. Monthly record of herbicides, insecticides and disease control chemicals used for the Project.
e. Written application recommendation by a licensed agricultural pest control advisor for weed, pest and disease controls restricted by the Director of Agriculture proposed for this Work.
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2. Project Closeout Submittal:
a. Include in a single 3-ring binder a Landscape Maintenance Manual for use by the Owner, containing an indexed collection of all schedules, records and permits listed above, including documentation of accepted condition of planting and irrigation at Final Acceptance.
C. Material Samples: Not required.
D. Scaled Shop Drawings: Not required.
E. Field-Constructed Mock-ups: Not required.
F. Submittals under this Article will be rejected and returned without the benefit of review by the Landscape Architect if they are difficult to read due to insufficient scale, poor image quality, or poor drafting quality; or if all of the required information is missing or not presented in the format as requested. Partial Submittals will not be accepted.
G. No Work shall proceed under this Section until Submittal requirements indicated herein have been reviewed accordingly by the Landscape Architect.
1.4 QUALITY ASSURANCE AND CONTROL
A. Qualifications:
1. Valid California C-27 (Landscaping Contractor) License.
2. Experience: Contractor or sub-contractor performing Work under this Section shall have a full-time employee assigned to the Project as foreman for the duration of the Contract.
Employee shall have a minimum of four (4) years experience in landscape maintenance supervision, with experience or training in entomology, pest control, soils, fertilizers and plant identification. Employee shall speak English fluently.
3. Labor Force: Landscape maintenance labor force shall be thoroughly familiar with, and trained in, the Work to be accomplished, and shall perform the task in a competent, efficient manner acceptable to the Owner.
B. Requirements:
1. Supervision: Landscape Maintenance Foreman shall directly supervise the Work force during duration indicated herein this Section. Notify Owner of changes in supervision.
2. Identification: Provide proper identification during duration for landscape maintenance firm's vehicles and labor force. Be uniformly dressed in a manner satisfactory to the Owner.
1.5 PROJECT/SITE CONDITIONS
A. Site Visit: At beginning of the designated Landscape Establishment Period, visit and tour the site with the Owner's Representative, Landscape Architect, and other interested parties, to clarify the scope of Work, and understand existing project/site conditions.
B. Documentation of Conditions: Document the general condition of installed plant materials, recording those which are healthy and thriving, and unacceptable materials which are damaged, dead, and/or dying and in need of replacement.
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C. Irrigation System: Document general condition of existing irrigation system, making sure that faulty, improper, and/or non-functioning irrigation materials or equipment are reported.
1.6 SEQUENCING AND SCHEDULING
A. Perform Work under Landscape Establishment Period during hours mutually agreed upon between Owner and Contractor.
B. Work force shall be present at the Project Site at a minimum duration indicated in this Section, and at other times as necessary, to perform specified Work, in accordance with the approved schedule under the Landscape Establishment Period.
1.7 WARRANTY
A. Specific Requirements: Refer to the following Sections:
1. Section 328400 Planting Irrigation.
2. Section 329200 Lawns & Grasses.
3. Section 329300 Exterior Plants.
4. Section 329400 Landscape Planting Accessories.
PART 2 - PRODUCTS
2.1 MATERIALS
A. General: Materials and equipment as required to perform Work under this Section shall be provided by Contractor.
B. Water: Clean, potable and fresh, as available from Owner.
C. Fertilizers:
1. Fertilizer Tablets: Tightly compressed, slow-release and long-lasting complete fertilizer tablets, bearing manufacturer's label of guaranteed analysis of chemicals present. Refer to Section 329113 Soil Preparation, for requirements.
2. Balanced, once-a-season application, controlled-release Fertilizer(s), with a blend of coated prills which supply controlled-release nitrogen, phosphorus and potassium, and uncoated, rapidly soluble prills containing nitrogen and phosphorus.
D. Herbicides, Insecticides, and Fungicides:
1. Provide materials with original manufacturers' containers, properly labeled with guaranteed analysis.
2. Use non-staining materials.
E. Replacement Tree Guys, Stakes, Ties and Wires: Match originally accepted existing materials installed on the Project.
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2.2 EQUIPMENT
A. General: Use only the proper tool(s) required for each task under this Section.
1. Maintain tools in sharp, properly-functioning condition.
2. Clean and sterilize all pruning tools prior to usage.
B. Insect/Disease Prevention: Provide measures to prevent introduction of insect or disease-laden materials onto the Site. Refer to Section 329300 Exterior Plants.
PART 3 - EXECUTION
3.1 FREQUENCY AND DURATION OF LANDSCAPE ESTABLISHEMENT PERIOD A. Following satisfactory completion of all items included on the Landscape Punch List, the contracted Landscape Establishment Period shall commence and progress.
B. Frequency and Duration:
1. Work performed under this Section shall be executed by Contractor at a minimum of once per week, for a duration of a minimum of 90 calendar days.
3.2 COMMENCING THE LANDSCAPE ESTABLISHMENT PERIOD
A. Preliminary Review: As soon as landscape installation is substantially completed per the Contract Documents, Contractor shall arrange to hold a preliminary review on-site with the Landscape Architect, Owner, and other interested parties to evaluate the condition and execution of the completed Work. Evaluation of the Work shall be executed by the Landscape B. Date of Review: Notify Landscape Architect at least five (5) working days prior to anticipated Date of Review.
C. Commencing the Landscape Establishment Period: The date on which the Landscape Architect determines that the landscape installation is substantially-complete, whereas outstanding Work included on the Landscape Punch List is addressed and satisfactorily completed to the satisfaction of the Landscape Architect.
3.3 PREPARATION
A. Protection:
1. Protect new landscape planting areas from damage during duration of Landscape Establishment Period, until Final Acceptance.
2. Provide temporary protection fences, barriers and signs, as required, for protection.
B. Replacements:
1. Immediately treat or replace plant materials as directed, which become damaged or injured as a result of Contractor's operations or negligence, per the Landscape Architect, at no additional cost to Owner.
2. Replacement plant materials shall match size and variety of plant material being replaced.
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3.4 PLANTING ESTABLISHMENT
A. Watering Basins:
1. Maintain watering basins around the perimeter of the installed plant materials so that enough water can be applied to establish and maintain adequate soil moisture through the root zone of the plant materials. Re-dish and tamp basins accordingly which have become damaged or have failed since installation.
2. For supplemental hand watering of watering basins, use a water wand to break the water force. Do not permit use of "jet" type watering equipment. Do not permit crown roots to become exposed to air through dislodging of soil and mulch.
3. Mulch: Maintain originally specified thickness of mulch material to reduce evaporation and frequency of watering.
4. During rainy season, open basins to allow surface drainage away from the root crown where excess water may accumulate. Restore watering basins at end of rainy season.
5. At the end of the rainy season, re-dish and tamp watering basin at trees and shrubs.
B. Settlement of Plant Materials: Reset/replant sunken or settled plant materials to proper grades and in upright position.
C. Weed Control:
1. Planting areas throughout site shall be weed-free at all times, including areas between plants and along watering basins.
2. Use only recommended and legally-approved herbicides to control and maintain weed growth.
3. Avoid frequent soil cultivation that destroys shallow roots and breaks the seal of preemergent herbicides.
D. Pruning:
1. Prune trees to select and develop permanent scaffold branches that are smaller in diameter than the trunk or branch to which they are attached, and which have vertical spacing of eighteen- -eight- and radial orientation so as not to overlay each another.
2. Prune trees to eliminate diseased or damaged growth, and narrow V-shaped branch forks that lack strength. Reduce toppling and wind damage by thinning-out crowns.
3. Prune trees to maintain growth within space limitations, maintaining a natural appearance and balancing crown with roots.
4. No stripping of lower branches of young trees shall be permitted.
5. Retain lower branches in a "tipped back" or pinched condition to promote caliper trunk growth. Do not cut back to fewer than six (6) buds or leaves on such branches. Only cut lower branches flush with the trunk after the tree is able to stand erect without staking or other support.
6. Thin out and shape evergreen trees when necessary to prevent wind and storm damage.
Do primary pruning of deciduous trees during the dormant season. Do not permit any pruning of trees prone to excessive "bleeding" during growth season.
7. Prune damaged trees or those that constitute health or safety hazards at any time of year as required.
8. Make pruning cuts clean and close to the trunk, without cutting into the branch collar. "Stubbing" will not be permitted. Cut smaller branches flush with trunk or lateral branch.
Make larger cuts oneedge of the cut at the trunk or lateral branch.
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9. Branches too heavy to handle shall be precut in three (3) stages to prevent splitting or peeling of bark.
to remove the branch. Make the third cut at the trunk to remove the resulting stub.
10. Do not prune or clip shrubs into balled or boxed forms unless specifically called for by design.
11. Clip shrubs to be hedged when branches project two- eyond limit of clipped hedge shown on the Contract Drawings.
12. Take extreme care to avoid transmitting disease from one infected plant to another.
Properly sterilize pruning tools before going from one infected plant to other plant materials.
E. Maintenance of Existing Plant Materials to Remain:
1. General: Conform to applicable paragraphs regarding pruning, watering, spraying and fertilizing of new plant materials as indicated herein this Section.
2. Symptoms: Be alert to symptoms of construction damage to existing plantings as evidenced by wilting, un-seasonal or early flowering or loss of leaves, and insect or disease infestation due to declining vigor.
3. Notification: Submit in writing of evidences of declining vigor immediately upon discerning the problem. Take appropriate interim measures to mitigate the severity of the problem as specified in this Section.
4. Proposal: Submit written proposal and cost estimate for the correction of all conditions before proceeding with permanent correction Work.
3.5 GROUNDCOVER ESTABLISHMENT
A. Irrigation:
1. Check for moisture penetration throughout the root zone at least twice a month.
2. Water as frequently as necessary to maintain healthy growth of groundcovers.
B. Weed Control:
1. Control weeds, preferably by hand removal, with pre-emergent herbicides and with selective systemic herbicides.
2. Minimize hoeing of weeds in order to avoid plant damage.
C. Fertilization:
1. Recently installed plant materials: Verify with Owner actual completion date of planting installation and rate of prior application of fertilizers.
2. New Plant Materials: Place Planting Tablets (per Section 329113 Soil Preparation) beside the root ball about one3. Established Plant Materials: Do not use complete fertilizers unless soil test shows specific nutrient deficiencies.
D. Mowing and Edging:
1. Edge groundcovers to keep in bounds. Trim top growth as necessary to achieve an overall even appearance.
2. Ground covers which lend themselves to mowing shall be mowed to specified height above finished grade in order to renew growth, improve density and attractiveness.
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E. Replacements:
1. Replace dead and missing plants after obtaining Owner's agreement to pay for replacement.
2. Damages due to Contractor's negligence shall be paid for without charge to Owner.
3.6 TURF GRASS ESTABLISHMENT
A. Irrigation:
1. Irrigate Turf Grass at such frequency as weather conditions require, to replenish soil
2. Provide a total of one-one-half inches (1-
weather, in three (3) applications per week, minimum.
3. Water at night if irrigation system is electrically controlled. Otherwise, watering shall be done during early mornings.
B. Weed Control:
1. Control broadleaf weeds with selective herbicides.
2. In areas where crabgrass has infested the turf grass, apply a selective post-emergent herbicide as soon as possible, and prior to flowering.
3. Apply pre-emergent herbicides prior to crabgrass germination.
4. Do not irrigate for forty-eight (48) hours after application of herbicidal sprays.
5. Coordinate application of herbicides with thatch control and reseeding schedule as described below.
C. Mowing and Edging:
1. Mowing:
a. Mow Turf Grass at a frequency so the maximum grass heights are maintained as listed below:
Turf Type Growing
Season
Dormant
Season
Bluegrass or Tall Fescue
Perennial Ryegrass
Hybrid Bermuda
St. Augustine
b. Mulching mowers shall not be used.
c. Turf grass shall be cut with rotary mowers to maintain a uniform and horticulturally correct height.
d. Blades shall be kept sufficiently sharp and properly adjusted to provide a cleanlycut grass blade. Grass blade bruising, tearing, or shredding shall be prevented. e. Mowing pattern/direction shell be rotated weekly where feasible to prevent rutting and minimize compaction.
2. Edging:
a. Sidewalks, curbs, plants, walkways, roadway edges, space between planter beds, curbs, headers, and bed edges shall be mechanically edged with a steel blade edger on each visit, not to exceed seven (7) days, to maintain a neat, clean turf edge.
String-type edgers shall not be used for this function.
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b. Clippings shall either be vacuumed or blown-off all surfaces, or may be blown back to lawn, but no visible clumps of cut grass shall remain. Clippings, if bagged, shall be removed from the property on the same day the property is serviced.
3. String Trimming:
a. String Trimming shall be performed on a weekly basis around roadway signs, guard posts, trees, shrubs, utility poles, and other obstacles where mowers cannot reach. Do not allow string trimming to damage the trunk or foliage of plants. b. Grass shall be trimmed to the same desired height as determined by the mowing operation.
c. Particular shall be given to trimming around sprinkler heads and other irrigation appliances to provide maximum water coverage.
d. Turf adjacent to tree wells, valve boxes, and quick coupling valves shall be trimmed as needed to maintain a clean appearance. Chemical defoliants or
4. Chemical Edging:
a. Chemical application may be used to kill weeds and turf in and around areas adjacent to buildings, the base of fence lines, or where bed edges do not exist. b. Chemicals shall be used accordingly to applicable rules and regulations.
D. Reseeding/Overseeding:
1. Reseeding/Overseeding: Match existing seed mix of adjacent areas. Refer to Section 329200 Lawns & Grasses.
E. Renovating of Existing Lawns (where applicable):
1. Thatch Control: Maintain thatch layer at 1/2 in. depth or less. Verticut as required. a. Three (3) weeks before verticutting turf grass, apply nitrate fertilizers. b. Perform verticutting operations preferably in the fall months, but otherwise during the spring months. Remove all debris from verticutting. Overseed as needed. c. Over-seeding must not be followed by application of pre-emergent herbicides for at least four (4) to six (6) weeks. Normally this means that turf grasses invaded by weeds shall be renovated and over-seeded in the Fall, and treated for weed control in the following late Winter.
F. Core Aeration:
1. Do not perform aeration work during season of active weed germination.
2. Aerify compacted areas to improve water penetration when needed, using a piston-driven aerifier with hollow tines. Rake up and remove all resulting soil cores. Fertilize and irrigate immediately after clean-up of cores.
3. Contractor shall be responsible for locating and flagging irrigation devices, equipment, and lines prior to aerating.
G. Fertilization:
1. Recently seeded/sodded Turf Grass areas: Verify with Owner previous applications of fertilizer(s).
2. Established Turf Grass areas: Apply a slow-release (3 to 5 months) fertilizer (21-8-8; NP-K) once in spring and again in the fall at the following rates:
Program 1000 sq. ft. Acre
Optimum 15 lbs. 650 lbs.
Medium 12 lbs. 500 lbs.
Low 8 lbs. 350 lbs.
South Park Slope and Irrigation Repairs LANDSCAPE ESTABLISHMENT PERIOD CIP - 603 329813 - 10
3. Apply fertilizer when turf grass is dry and preferably after mowing. Do not apply during hot weather or when turf grass is under stress. Water immediately after application.
4. Apply only nitrogen unless a soil test shows a specific nutrient deficiency.
5. If soil pH gets below 6.0, then a basic fertilizer such as calcium nitrate may be preferable to an acidic fertilizer. Follow the soil chemist's recommendation when deficiencies appear.
3.7 INSECTS, PESTS, AND DISEASE CONTROL
A. Inspection: Inspect plant materials for signs of stress, damage and potential trouble from the following:
1. Presence of insects, moles, gophers, rabbits, ground squirrels, snails and slugs in planting areas.
2. Discolored or blotching leaves or needles.
3. Unusually light green or yellowish green color inconsistent with normal green color of leaves.
B. Personnel: Only licensed, qualified, trained personnel shall perform spraying for insect, pest and disease control.
C. Application: Spray with extreme care to avoid all hazards to any person or pet in the area or adjacent areas.
D. Lawn or vegetation-damaging pests shall be controlled in a timely manner to minimize damage.
3.8 IRRIGATION
A. General:
1. Apply water in sufficient quantities and as often as seasonal conditions require to keep installed planted areas moist at all times, well below the root system of plants. Hand water as required if irrigation system is not fully functional.
2. Repair without additional charge to Owner damages to Irrigation System caused by Contractor's operations. Perform repairs within one (1) watering period.
3. Report promptly to Owner accidental damage not resulting from Contractor's negligence or operations.
4. Twice a month, use a probe or other acceptable tool to check the rootball moisture of representative plants as well as the surrounding soil.
B. Cleaning and Monitoring the System:
1. Continually monitor the irrigation systems to verify that they are functioning properly as designed. Make program adjustments required by changing field conditions.
2. Prevent spraying on windows, building walls, by balancing the throttle control on the remote control valves and the adjustment screws on the sprinkler heads. Do not allow water to atomize and drift.
South Park Slope and Irrigation Repairs LANDSCAPE ESTABLISHMENT PERIOD CIP - 603 329813 - 11
3.9 AGGREGATE SURFACING MATERIALS
A. Aggregate Surfacing:
1. Maintain Aggregate Surfacing materials at the depth indicated in the Contract Documents. Replace Aggregate Surfacing that is unlike in character (color, size, texture).
Defective, fractured, stained, or material which does not meet the requirements herein in this Section shall be removed and replaced with appropriate Aggregate Surfacing material as specified.
2. Rake Aggregate Surfacing surfaces smooth, consistent, and level, with no depressions, voids, rills, footprints, etc. Fines from the Aggregate Surfacing that are located on the finished surface shall be raked and/or removed accordingly to maintain a clean, consistent Aggregate Surfacing finish.
3. Maintain Aggregate Surfacing free of stains, weeds, discoloration, trash, fines, debris, soil, sand, or other foreign material.
a. Contractor shall exercise care so as not to contaminate Aggregate Surfacing with Shredded Wood Mulches, plant materials, soil, or other foreign substances. b. Soil that has contaminated the Aggregate Surfacing areas shall be removed from hed surface of
the Aggregate Surfacing is not acceptable.
3.10 GRADING AND DRAINAGE
A. During the Landscape Establishment Period, all flow lines shall be maintained to allow for free flow of surface water. Displaced material which interferes with drainage shall be removed and placed as directed. Low Spots and pockets shall be graded to drain properly. Jute netting or other erosion control measures as directed shall be installed at flow lines and other locations where surface erosion is evident.
B. Damage to planting areas shall be repaired immediately and throughout the Landscape Establishment Period. Depressions caused by vehicles, bicycles, or foot traffic shall be filled and leveled. Replant damaged areas.
C. All paved areas shall be washed and maintained in a neat and clean condition at all times.
D. All subsurface drains and inlets shall be periodically cleared of debris, leaves, trash, etc., and flushed with clear water to avoid buildup of silt and debris.
3.11 CLEANING
A. General: Dispose of pruned plant materials, vacuum turf grass clippings and leaves, sweep walkways and rake smooth mulched areas. Remove from the site containers and other evidence of maintenance activities.
B. Litter Control:
1. Site areas under the Contract shall be cleared on a weekly basis of visible litter or debris, grass clippings, and garage.
2. Debris caused by normal seasonal winds shall be removed from site
3. Contractor shall be responsible for disposal of debris in accordance with local rules and regulations.
South Park Slope and Irrigation Repairs LANDSCAPE ESTABLISHMENT PERIOD CIP - 603 329813 - 12
C. Blowing:
1. Landscape debris generated by Work under this Section shall be blown-off or swept on a weekly basis. Do not blow grass clippings, edgings, or debris into shrub beds or onto paved areas unless after such blowing, the resultant accumulation of material is gathered and removed from the site.
3.12 TERMINATION OF THE LANDSCAPE ESTABLISHMENT PERIOD
A. Final Acceptance Procedure:
1. Work will be accepted by the Landscape Architect upon satisfactory completion of all Work, including Landscape Establishment Period, but exclusive of replacement of materials under the Warranty Period.
2. Submit a written request to Landscape Architect for review for Final Acceptance at least five (5) working days prior to anticipated Final Review date, which is at the end of the Landscape Establishment Period.
B. Corrective Work:
1. Work requiring corrective action or replacement shall be performed within ten (10) calendar days after the Final Review.
2. Perform corrective Work and materials replacement in accordance with the Contract Documents, Work shall be made by the Contractor at no cost to the Owner.
3. After corrective Work is completed, the Contractor shall again request a Final Review for Final Acceptance as outlined above.
a. Continue maintenance of all landscaped areas until such time as all corrective measures have been completed and accepted.
C. Conditions for Acceptance of Work at End of Landscape Establishment Period:
1. Each plant shall be alive and thriving, showing signs of growth and no signs of stress, disease, or any other weaknesses.
2. Replace plant materials not meeting these conditions. An additional Warranty Period equal in length to the original shall be commenced for all such plants and planted areas.
D. Final Acceptance Date: The date on which the Landscape Architect issues a Letter of Final Acceptance. Upon Final Acceptance, Owner will assume responsibility for maintenance of the Work beyond the Landscape Establishment Period.
3.13 CLOSE OUT
A. Landscape Maintenance Record:
1. Submit binder to Owner with documentation and records required and utilized during the Landscape Establishment Period.
B. Keys and Identification: Return keys and identification materials supplied by Owner for the purpose of site access.
END OF SECTION
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CIP No. 603
SOUTH PARK SLOPES AND IRRIGATION REPAIRS
VI. SPECIAL PROVISIONS
The following Special Provisions supplement and amend the 2024 Standard Specifications for Public Works Construction (SSPWC). These Special Provisions have been arranged into a format and sequence that parallels the Standard Specifications for Public Works Construction.
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TABLE OF CONTENTS
PART 1 GENERAL PROVISIONS SP-4
PREFACE: STANDARD SPECIFICATIONS AND STANDARD DRAWINGS -4 SECTION 1 GENERAL -4
1-2 TERMS AND DEFINITIONS -4
SECTION 2 SCOPE OF THE WORK -4
2-2 PERMITS. ............................................................................................................... SP-4 2-5 ............................... SP-5
2-5.5 sponsibility for Work. ................................................................. SP-5 2-5.6 Notice and Service Thereof. ................................................................................ SP-5 2-11 RETENTION OF IMPERFEFCT WORK. ........................................................... SP-6 SECTION 3 CONTROL OF THE WORK. .....................................................................SP-6 3-6 THE .................................................. SP-6 3-7 CONTRACT DOCUMENT. ................................................................................... SP-7 3-8 SUBMIITALS. ......................................................................................................... SP-7 3-13 COMPLETION, ACCEPTANCE, AND WARRANTY. ........................................ SP-8 SECTION 5 - LEGAL RELATIONS AND RESPONSIBILITIES. .................................SP-9 5-3 LABOR..................................................................................................................... SP-9 5-4 INSURANCE. .......................................................................................................... SP-9 5-7 SAFETY. ................................................................................................................ SP-10 5-8 LAWS TO BE OBSERVED. ................................................................................. SP-11 5-9 FAIR EMPLOYMENT PRACTICE COMMISSION CERTIFICATION. ........ SP-13 SECTION 6 PROSECTION AND PROGRESS OF THE WORK. .............................SP-13 6-1 CONSTRUCTION SCHEDULE AND COMMENCEMENT OF THE WORK.SP-13 6-9 LIQUIDATED DAMAGES. ................................................................................. SP-15 SECTION 7 MEASUREMENT AND PAYMENT. ......................................................SP-15 7-3 PAYMENT. ............................................................................................................ SP-15 PART 2 CONSTRUCTION MATERIALS ......................................................................SP-27 SECTION 201 CONCRETE, MORTAR, AND RELATED MATERIALS................SP-27 201-1 PORTLAND CEMENT CONCRETE. .............................................................. SP-27 PART 3 CONSTRUCTION METHODS..........................................................................SP-28 SECTION 300 EARTHWORK. .....................................................................................SP-28 300-1 CLEARING AND GRUBBING. ....................................................................... SP-28 PART 4 EXISTING IMPROVEMENTS..........................................................................SP-29 SECTION 400 PROTECTION AND RESTORATION. ..............................................SP-29 400-4 TREES. ............................................................................................................... SP-29 PART 8 LANDSCAPING AND IRRIGATION...............................................................SP-29 SECTION 800 MATERIALS. .........................................................................................SP-29 800-1 LANDSCAPING MATERIALS. ....................................................................... SP-29
SP-3
800-1.1 Topsoil. ............................................................................................................. SP-29 800-1.4.2 Trees. ................................................................................................................ SP-29 800-1.4.2.1 DELIVERY, STORAGE, AND HANDLING OF TREES .......................... SP-29 SECTION 801 INSTALLATION. ..................................................................................SP-31 801-2 EARTHWORK AND TOPSOIL PLACEMENT. ............................................. SP-31 801-2.1 General. ............................................................................................................ SP-31 801-4 PLANTING. ....................................................................................................... SP-31 801-4.5 Tree and Shrub Planting. ................................................................................ SP-31 PART 9 SPECIFIC CONDITIONS .SP- 32
SECTION 900 WORK AREA SP-32
900-1.1 Park Access SP-32
900-1.2 Contractor Laydown and Storage Area SP-32
SECTION 901 CONSTRUCTION MANAGEMENT SOFTWARE ........................SP-32 901-1.1 Procore Software .............................................................................................. SP-32 EX - SCHEDULE -33
- SP-34
EXHIBIT - SP-36
EXHIBIT - HAUL .. SP-37
SP-4
PART 1 GENERAL PROVISIONS
PREFACE: STANDARD SPECIFICATIONS AND STANDARD DRAWINGS
The Standard Specifications for Public Works Construction (SSPWC), written and promulgated by the Southern California Chapter of the American Public Works Association and the Southern California Districts of the Associated General Contractors of California, shall be the Standard Specifications of the City. All work shall conform to the edition indicated in this document and in the bid proposal documents , including supplements, of the SSPWC, these Special Provisions which supplement or modify the SSWPC, the Standard Plans for Public Works Construction (SPPWC) of the same edition as the SSPWC, and the Standard Drawings as issued by the City available at the time bids are opened unless otherwise specified in the Contract Documents.
The above referenced Standard Specifications, Special Provisions and Standard Drawings are hereby made a part of the Contract Documents.
SECTION 1 GENERAL.
1-2 TERMS AND DEFINITIONS.
Whenever the following terms are used in the SSPWC, they shall be understood to mean and refer to the following:
a) Board The City Council of the City of Hermosa Beach
b) Contract Documents Documents including but not limited to the proposal forms, Special Provisions, Bonds, Insurance, Contract, and all Addenda setting forth any modifications to the documents.
c) Engineer The City Engineer or his/her authorized representative d) Bidder An individual, co-partnership, association, or corporation submitting a proposal for the work contemplated, acting directly or through a duly authorized representative. e) Legal Address of Contractor The address given on the Contractor designated as the place to which all notices, letters or other communications to the Contractor shall be mailed or delivered.
SECTION 2 SCOPE OF THE WORK.
2-2 PERMITS.
Add the following:
Prior to beginning work, the Contractor shall obtain authorization and permits from the City of Hermosa Beach. The Contractor will be responsible to protect and preserve all property and improvements in accordance with the Contract Documents.
The Contractor must have or obtain a valid City of Hermosa Beach Business License in accordance with the provisions of the Hermosa Beach Municipal Code.
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City Right of Way Permit
A City Right of Way Permit is required to work within public right-of-way and will be issued at no cost to the Contractor.
Right of Way Permits
When work occurs in the right-of-way of other entities, the Contractor shall obtain a no fee right of way permit as required for an encroachment from that entity. 2-5 THE CONTRACTOR
2-5.4 Haul Routes.
Replace the entire subsection with the following:
Hall Routes shall be per the City of Hermosa Beach Truck Routes map. D Add the following subsections:
2-5.5 Contractor sponsibility for Work.
Until the formal acceptance of the work by the City, the Contractor shall have the charge and care thereof and shall, subject to the insurance protection furnished, bear the risk of accident, loss or damage to any part thereof by action of the elements or from any other cause, whether arising from the execution or from the non-execution of the work. The Contractor shall rebuild, repair, restore and otherwise correct damages to any portion of the work occasioned by any of the above causes before its acceptance.
In case of suspension of work from any cause whatever, the Contractor shall be responsible for all materials and the proper temporary storage thereof. 2-5.6 Notice and Service Thereof.
Any notice required or given by one party to the other under the Contract shall be in writing and shall be dated and signed by the party giving such notice or by a duly authorized representative of such party. Any such notice shall not be effective for any purpose whatever unless served in the following manner:
Notice shall be given to the City by personal delivery thereof to the City Engineer or by depositing the same in the United States mail enclosed in a sealed envelope, registered and with postage prepaid, addressed to:
Public Works Department
City of Hermosa Beach
1315 Valley Dr.
Hermosa Beach, CA 90254
Notice shall be given to the Contractor by personal delivery thereof to said Contractor or to his authorized representative at the site of the project, or by depositing the same in the United States mail, enclosed in a sealed envelope addressed to said Contractor at the address established for the conduct of the work under this Contract, postage prepaid and registered.
Notice shall be given to the Surety, or any other person, by personal delivery to said Surety or
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other person, or by depositing the same in the United States Mail, enclosed in a sealed envelope addressed to such Surety or persons at the address of said Surety or persons last communicated to the party giving the notice, postage prepaid and registered. 2-5.7 Warranty of Title.
No materials, supplies, or equipment for the work under this Contract shall be purchased subject to any chattel mortgage or under a conditional sale Contract or other agreement by which an interest therein or any part thereof is retained by the seller or supplier. The Contractor warrants clear and good title to all materials, supplies, and equipment installed and incorporated in the work, and agrees upon completion of all work to deliver the premises, together with all improvements and appurtenances constructed or placed thereon by them to the City free from any claims, liens, encumbrances, or charges, and further agrees that neither they nor any person, firm, or corporation furnishing any material or labor for work covered by the Contract shall have any right to a lien upon the premises or any improvement or appurtenance thereon; provided, that this shall not preclude the Contractor from installing metering devices or other equipment of utility companies the title of which is commonly retained by the utility company.
Nothing contained in this section, however, shall defeat or impair the right of such persons furnishing materials or labor under any bond given by the Contractor for their protection, or any right under any law permitting such persons to look to funds due the Contractor, which are in the hands of the City.
2-11 RETENTION OF IMPERFEFCT WORK.
If any portion of the work done or materials furnished under the Contract proves defective or not in accordance with the specifications and Contract drawings, and if the imperfection in the same is not of sufficient magnitude or importance to make the work dangerous or undesirable, or if the removal of such work is impracticable or will create conditions which are dangerous or undesirable in the opinion of the Engineer, the Engineer shall have the right and authority to retain the work instead of requiring it to be removed and reconstructed, but he shall make such deductions therefor in the payment due the Contractor as may be just and reasonable.
SECTION 3 CONTROL OF THE WORK.
3-6 THE CONTRACTOR REPRESENTATTIVE.
Add the following:
The Contractor shall provide the Engineer with the name, address, and business and home telephone numbers of the person responsible for the maintenance of barricades, traffic control signs, lights and other safety devices.
SP-7
3-7 CONTRACT DOCUMENT.
3-7.2 Precedence of Contract Documents.
Replace the entire subsection with the following:
If there is a conflict between any of the Contract Documents, the document highest in the order of precedence shall control. The order of precedence, from highest to lowest, shall be as follows:
1. Requirements of law, including the Code and Ordinances of the City of Hermosa Beach.
2. Permits from other agencies as may be required by law.
3. Permits from City of Hermosa Beach Departments as may be required by law or ordinance.
4. The Contract.
5. The Bid Proposal.
6. Addenda.
7. Notice Inviting Bids.
8. Instructions to Bidders.
9. Special and General Provisions.
10. Plans.
11. City of Hermosa Beach Standard Plans.
12. Other Standard Plans.
13. Standard Specifications for Public Works Construction.
14. Reference Specifications.
Change orders, supplemental agreements, and approved revisions to Plans and Specifications will take precedence over documents listed above, except those listed as FIRST, SECOND, and THIRD. Detailed plans shall have precedence over general plans. 3-8 SUBMIITALS.
3-8.1 General.
Add the following:
The Contractor shall submit the following submittals within ten (10) days of notification of the City ntent to award this Contract:
Project Construction Schedule, sequence, and phase sequence plan Preconstruction video on USB, 2 copies
Copy of City Business License (Prime and Subcontractors)
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24 Hr. Emergency Phone Call List
Vehicular and Pedestrian Traffic Control Plan (paper and PDF) WPCP / Best Management Practices
Asphalt Concrete material specifications and mix design Concrete material specifications and mix design
Crushed Miscellaneous Base material specifications
Topsoil material specifications
Detectable Warning System/Truncated Domes for access ramps o
o Shop drawings for access ramp products showing fabrication details, composite structural system, tile surface profile, sound on cane amplification feature, plans showing tile placement including joints, and material to be used as well as outlining installation materials and procedure
Constructions Notices sample template shall be provided by the City to the Contractor and modified and submitted to the engineer for review and approval. Approved Construction Notice shall be distributed by Contactor. See Exhibit C Others as requested by the Engineer
3-13 COMPLETION, ACCEPTANCE, AND WARRANTY.
Add the following subsection:
3-13.4 Completion and Acceptance.
In addition to the guarantees as required in Section 2-4 of the Standard Specifications, the Faithful Performance Bond shall remain in full force and effect for a period of one year after acceptance of the work by the City to insure that defects, which appear within said period, will be repaired, replaced, or corrected by the Contractor, at its own cost and expense, to the satisfaction of the Engineer within thirty (30) days of written notice thereof by the City.
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SECTION 5 - LEGAL RELATIONS AND RESPONSIBILITIES.
5-3 LABOR.
Add the following subsection:
5-3.6 Laws.
Each Bidder must submit with the Bid Proposal a fully executed Certificate of NonDiscrimination by Contractors. Bids will not be considered unless accompanied by the completed Certificate.
After the opening of bids and the determination of the low Bidder, said low Bidder shall submit to the Public Works Department, no later than 5:00 P.M. on the third working day following the bid opening, a completed Fair Employment Practices Contractor Compliance Report .
The Contractor shall comply with all applicable provisions of Sections 1776, 1777.5 and 1777.7 of the C a l i f o r n i a L a b o r Code. The Contractor shall be responsible for compliance with Section 1776 and shall insert a provision in all subcontracts requiring subcontractors to comply with said section.
The Contractor is prohibited from performing work on this project with a subcontractor who is ineligible to perform work on the project pursuant to Section 1777.1 or 1777.7 of the Labor Code. 5-4 INSURANCE.
Replace the entire subsection with the following:
The Contractor shall, at its expense, maintain in effect all times during the performance of work under the Contract not less than the following coverage and limits of insurance, which shall be maintained with insurers licensed to sell insurance in the State of California and having a A- or higher rating in the latest edition of Be Insurance Guide, and shall be subject to approval by the City Manager:
Worker ompensation and Employer Liability
Worker ompensation coverage as required by law
Employer Liability limits of at least $1,000,000 per occurrence Comprehensive General Liability
Combined Single Limit - $5,000,000
Automobile Liability
Combined Single Limit - $5,000,000
All of the Contractor policies shall contain an endorsement providing written notice shall be given to the City at least 30 calendar days prior to termination, cancellation or reduction of coverage in the policy
The Bodily Injury and Property Damage Liability policies shall contain the following:
1. An endorsement extending coverage to the City as an insured, in the same
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manner as the named insured as respects liabilities arising out of the performance of any work under the Contract. Such insurance shall be primary insurance as respects the interest of the City, and any other insurance maintained by the City shall be excess and not contributing insurance with the insurance required hereunder.
2. Severability of Interest ause.
3. Elimination of any exclusion regarding loss or damage to property caused by explosion or resulting from collapse of buildings or structures or damage to property underground, commonly referred to by insurers as the XCU hazards.
4. Provision or endorsement stating that such insurance, subject to all of its other terms and conditions, applies to the liability assumed by the Contractor under the Contract.
Promptly on execution of the Contract, and prior to commencement of any work, the Contractor shall deliver to the City copies of all required policies and endorsements thereto on the forms supplied by the City.
The Contractor shall require and verify similar insurance on the part of its subcontractors.
The foregoing requirements as to the types, limits and City approval of insurance coverage to be maintained by the Contractor are not intended to and shall not in any manner limit or qualify the liabilities and obligation assumed by the Contractor under the Contract.
Any policy or policies of insurance that the Contractor or his Subcontractors elects to carry as insurance against loss or damage to their construction equipment and tools or other personal property used in fulfillment of this Contract shall include a provision waiving the insurer right of subrogation against the City.
The cost of all insurance shall be included in the Contractor bid. 5-7 SAFETY.
Add the following subsection:
5-7.9 Emergency Provisions.
Unusual conditions may arise on the work which will require that immediate and unusual provision be made to protect the public from danger or loss or damage to life and property, due directly or indirectly to the prosecution of the work, and it is part of the service required of the Contractor to make such provisions and to furnish such protection.
Whenever, in the opinion of the City, an emergency exists of which the City is aware and against which the Contractor has not taken sufficient precaution for the safety of the public or the protection of utilities or of adjacent structures or property which may be injured by the progress of construction; and whenever, in the opinion of the City, immediate action shall be considered necessary in order to protect public or private personnel or property interests, or prevent likely loss of human life or damage on account of the operations under the Contract, then in that event the City may provide suitable protection to said interests by causing such work to be done and material to be furnished, as in the opinion of the City may seem reasonable and necessary, all at the expense of the Contractor.
Add the following subsections:
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5-8 LAWS TO BE OBSERVED.
5-8.1 Laws and Regulations.
The Contractor shall keep himself fully informed of all Federal and State laws, County and City ordinances and regulations which, in any manner, affect those engaged or employed on the work, the materials used in the work or the conduct of the work. If any discrepancy or inconsistency should be discovered in this Contract or in the Plans or Specifications herein referred to, in relation to any such law, ordinance or regulation, the Contractor shall forthwith report the same in writing to the Engineer. The Contractor shall, at all times, observe and comply with and shall cause all his agents and employees to observe and comply with all such applicable laws, ordinances and regulations in effect or which may become effective before completion of this Contract. He shall protect and indemnify the City and its officers and agents against any claim or liability arising from or based on the violations of any such laws, ordinances or regulations whether by himself or by his employees or his subcontractors or their employees.
Except as otherwise explicitly provided in these Specifications, all permits and licenses necessary to the prosecution of the work shall be secured by the Contractor at his own expense and he shall pay all taxes properly assessed against his equipment or property used or required in connection with the work.
All state laws, all county and city ordinances and regulations now imposed by competent authority and relating to any materials required to be furnished under these specifications and works required to be done hereunder, shall be deemed to be and hereby are made controlling and part of these specifications.
5-8.2 General.
The Contractor shall keep himself fully informed of all existing state and national laws and municipal ordinances and regulations which in any manner affect those engaged or employed in the work, or the materials used in the work or which in any way affect the conduct of the work and of all such orders and decrees of bodies or tribunals having any jurisdiction or authority over the same.
5-8.3 Eight-Hour Law.
Eight (8) hours labor constitutes a legal day's work. The Contractor shall forfeit as a penalty $25.00 (Twenty-five dollars) for each workman employed in the execution of the Contract by the Contractor or any subcontractor under him for each calendar day during which such workman is required or permitted to work more than eight (8) hours in any one calendar day and forty (40) hours in any one calendar week in violation of the provisions of the Labor Code and in particular, Section 1810 to Section 1815 thereof inclusive except that work performed by employees of Contractors in excess of eight (8) hours per day and forty (40) hours during any one week, shall be compensated at not less than one and one-half (1 1/2) times the basic rate of pay as provided in Section 1815.
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5-8.4 Prevailing Rate of Per Diem Wages.
Pursuant to the provisions of Section 1773 of the Labor Code, the general prevailing wage rates in the County in which the work is to be done have been determined by the Director of the California Department of Industrial Relations. These wages are set forth in the General Prevailing Wage Rates. The Federal Minimum wage rates for this project as predetermined by the United States Secretary of labor are set forth herein by addenda and in copies that may be examined at the offices described above where project plans, special provisions, and proposal forms may be seen. Addenda to modify the federal minimum wage rates, if necessary, will be issued to holders. Future effective general prevailing wage rates which have been predetermined and are on file with the California Department of Industrial Relations are referenced but not printed in the general prevailing wage rates.
Attention is directed to the Federal minimum wage rate requirements in these Special Provisions.
If there is a difference between the minimum wage rates predetermined by the Secretary of labor and the general prevailing wage rates determined by the Director of the California Department of Industries Relations for similar classifications of labor, the Contractor and subcontractor shall pay not less than the higher wage rate. The City will not accept lower State wage rates not specifically included in the Federal minimum wage determination. This includes elper (or other classifications based on hours of experience) or any other classifications not appearing in the Federal wage rate determination. Where Federal wage determinations do not contain the State wage rate determination otherwise available for use by the Contractor and subcontractor, the Contractor and subcontractor shall pay not less than the Federal minimum wage rate which most closely approximates the duties of the employees in question.
The U.S. Department of Transportation (DOT) provides a toll-free hotline service to report bid rigging activities. Bid rigging activities can be reported Mondays through Fridays, between 8:00 a.m. and 5:00 p.m., eastern time, Telephone No. 1-800-424-9071. Anyone with knowledge of possible bid, Bidder collusion, or other fraudulent activities should use the hotline to report these activities. The hotline is part of the DOT continuing effort to identify and investigate highway construction Contract fraud and abuse and is operated under the direction of the DOT Inspector General. All information with be treated confidentially and caller anonymity will be respected.
The Contractor shall comply with Labor Code Section 1775. In accordance with said section, the Contractor shall forfeit as a penalty to the City $50.00 (fifty dollars) for each calendar day, or portion thereof, for each workman paid less than the stipulated prevailing rates for such work or craft in which such workman is employed for any work done under the Contract by him or by `any subcontractor under him in violation of the provisions of the Labor Code and in particular Labor Code Sections 1770 to 1780, inclusive. In addition to said penalty and pursuant to said Section 1775, the difference between such stipulated prevailing wage rates and the amount paid to each workman for each calendar day or portion thereof for which each workman was paid less than the stipulated prevailing wage rate shall be paid to each workman by the Contractor.
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5-8.5 Certified Payroll.
Pursuant to Section 1776 of the Labor Code, the Contractor and/or subcontractors shall submit weekly to the City for each week in which any Contract work is performed a certified copy of all payroll records. Should the Contractor fail to provide such payroll certificates, the City may withhold.
$1,000.00 for each weekly payroll certificate not received from payment due. 5-9 FAIR EMPLOYMENT PRACTICE COMMISSION CERTIFICATION.
The Contractor's attention is directed to the requirements in Section 12990 of the Government Code for nondiscrimination and compliance employment programs.
SECTION 6 PROSECTION AND PROGRESS OF THE WORK.
6-1 CONSTRUCTION SCHEDULE AND COMMENCEMENT OF THE
WORK.
6-1.1 Construction Schedule.
Add the following:
The Contractor proposed construction schedule shall be submitted to the Engineer within ten (10) working days after the date of the Notice of Contract Approval. The schedule shall be supported by written statements from each supplier of materials or equipment indicating that all orders have been placed and acknowledged, and setting forth the dates that each item will be delivered.
In preparation of the construction schedule, the following items shall be considered:
The City observes the following holidays, which shall be considered non-working days.
If the Contractor elects to work on any of the City holidays the Contractor shall be responsible for paying any associated inspection costs, including overtime and holiday premiums. Any work not completed and fully open to public traffic shall be maintained in a safe and delineated condition. Traffic control and safety devices shall be maintained at all times.
o
o
o
o Cesar Chavez Day
o Memorial Day
o Juneteenth
o Independence Day
o Labor Day
o Veterans Day
o Thanksgiving
o Christmas Day
The working hours shall be limited to the hours between 8:00 A.M. and
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6:00 P.M., Monday through Friday. Deviation from normal working hours will not be allowed unless written permission has been duly obtained beforehand from the office of the City Engineer. The Contractor shall provide adequate light for proper prosecution of the work, for the safety of the workmen and the public, and for proper inspection.
In the event of either a requested or emergency deviation, inspection service fees will be charged against the Contractor. The service fees will be calculated at overtime rates including benefits, overhead and travel time. The service fees will be deducted from any amounts due to the Contractor.
Prior to issuing the Notice to Proceed, the Engineer will schedule a preconstruction meeting with the Contractor to review the proposed construction schedule and delivery dates, arrange utility coordination, discuss construction methods and clarify inspection procedures.
The names, addresses, and telephone numbers of the Contractor and subcontractors, or their representatives, shall be filed with the Public Works Manager and the County Sheriff Department or the City Police Department prior to beginning work.
The Contractor shall also notify the City of Hermosa Beach and the owners of all utilities and substructures not less than 72 hours prior to starting construction. The following utility companies list of names and telephone numbers is intended for the convenience of the Contractor and is not guaranteed to be complete or correct:
Southern California Edison Co. 310/783-9332
The Gas Co. 310/605-7837
Verizon 818/837-0394
Hermosa Beach Police & Fire 310/524-2750
Time Warner (Cable TV) 310/216-4184
West Basin Municipal Water District 310/217-2411
Athens Services 626/934-4696
California Water Service Co. 310/257-1428
Underground Service Alert 800/227-2600
Los Angeles County Flood Maintenance 562/861-0316
Los Angeles County Public Works 626/458-3109
The Contractor shall submit periodic Progress Reports to the Director of Public Works by the tenth day of each month. The report shall include an updated Construction Schedule. Any deviations from the original schedule shall be explained. Progress payments will be withheld pending receipt of any outstanding reports.
6-4.3 Payment for Delays.
To the furthest extent permitted by law, replace the entire subsection with the following:
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In compliance with the provisions of California Public Contract Code § 7102, the Contractor will be compensated for damages incurred due to delays in completing the Work due solely to the fault of the City, where such delay is unreasonable under the circumstances and not contemplated by the parties. The Contractor and City agree that determining actual damages is impracticable and extremely difficult. As such, the Contractor shall be entitled to the appropriate time extension and to payment of liquidated damages in the sum of $1,200 per Day of delay in excess of the time specified for the Completion of the Work. Such amount shall constitute the only payment allowed and shall necessarily include all overhead (direct or indirect), all profit, all administrative costs, all bond costs, all labor, materials, equipment and rental costs, and any other costs, expenses and fees incurred or sustained as a result of such delay. The Contractor expressly agrees to be limited solely to the liquidated damages for all such delays as defined in this subsection. 6-9 LIQUIDATED DAMAGES.
Add the following:
The amount of liquidated damages is hereby amended to $1,200 for each consecutive calendar day.
SECTION 7 MEASUREMENT AND PAYMENT.
7-3 PAYMENT.
7-3.2 Partial and Final Payment.
Replace the entire subsection with the following:
The closure date for periodic progress payments shall be the twenty-fifth day of each month.
Authorization to pay is commonly received on the tenth day of the following month.
However, payments will be withheld pending receipt of any outstanding reports required by the Contract Documents.
The closure date for the purpose of making partial progress payments will be the last day of each month. The Contractor may request, in writing, that such monthly closure date be changed. The Engineer may approve such request when it is compatible with the AGENCY'S payment procedure. Each month, the Contractor shall meet with the Engineer, a minimum of three working days prior to the submittal of the progress payment to the AGENCY, to finalize and receive approval regarding the measurement of the Work performed through the closure date and the estimated value of the progress payment based on the contract Unit Prices or as provided for in the bid schedule. Any progress payment submitted without such approval will be considered incomplete and returned to the Contractor and no payment shall be considered until such approval is obtained. Payments will be withheld pending receipt of any outstanding reports required by the contract documents. In addition, the final progress payment will not be released until the Contractor returns the control set of specifications and plans indicating the as-built conditions. At the request and expense of the Contractor, who shall retain beneficial ownership and receive interest, if any thereon, the AGENCY shall permit the substitution and deposit therewith of securities equivalent to the amount of any monies withheld by the AGENCY.
At the expiration of 35 days from the filing and recording of the Notice of Completion of the Work, the amount deducted from the final estimate and retained by the AGENCY will be paid to
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the Contractor except such amounts as required to be withheld by properly executed and filed to stop payment, or as may be authorized by the contract.
7-4 BID ITEMS
7-4.1 TRAFFIC CONTROL & PUBLIC SAFETY The Contractor shall provide and maintain all construction area traffic controls in accordance with Section 7-10 of the Standard Specifications for Public Works Construction, the latest version of the California Manual on Uniform Traffic Control Devices (CA MUTCD), and Work Area Traffic Control Handbook (WATCH), and as noted herein. All necessary traffic control devices shall be in place prior to the start of work on a project section.
The Contractor shall so conduct his operations as to offer the least possible obstruction and shall be
made to provide a clear and unobstructed view of all traffic control signs, signals, or markers.
The Contractor shall maintain access for emergency vehicles at all times. The Contractor shall maintain a 24-hour emergency service to remove, install, relocate, and maintain warning devices and shall furnish to the Engineer, names, and telephone numbers of three persons responsible for this emergency service. In the event these persons do not promptly respond when notified, or it becomes necessary to call other forces to accomplish emergency service, the Contractor will be responsible for any cost incurred. All existing permanent traffic control signs, barricades and devices shall remain in effective operation unless a substitute operation is arranged for and approved by the Engineer.
Prior to the start of each workday, the Contractor shall perform all necessary work incidental to and commensurate with the proper signing, detouring, barricading, etc., heretofore and hereinafter specified that is required for that particular day's schedule of operations. No construction shall be permitted until such signing and detouring operations have been completed.
The Contractor may post "Temporary No Parking" signs only after notifying and receiving approval from the Engineer. Type of sign, method, and location of such posting shall conform to the State of California uniform sign chart. The Contractor shall be required to provide and maintain all necessary flag persons, barricades, delineators, signs, flashers, and any other safety equipment as set forth in the latest publication of the California MUTCD, or as required by the Engineer to insure safe passage of traffic.
The Contractor shall submit a traffic control and Phasing plan for approval prior to beginning construction. No work shall commence on a phase until the previous phase is completed unless approved by the Engineer. The Contractor shall include these sequences in his work progress schedule to be submitted. The Contractor shall provide written notification to all businesses and residents near the construction one week prior to the work start date. The notice shall be prepared by the contractor, approved by the City, distributed by the Contractor, and will include a preliminary schedule, name of the job superintendent/foreman and a telephone number where he can be reached 24 hours a day in case of emergency.
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The cost for all project noticing will be included in the price of the traffic control. Failure or refusal by the Contractor to comply with the above requirements shall be sufficient cause for the Engineer to order the work done by City forces and all costs thereof to be borne by the Contractor.
Should the Contractor appear to be negligent in furnishing warning and protective measures as above provided, the Engineer may direct attention to the existence of a hazard, and the necessary warning and protective measures shall be furnished and installed by the Contractor, at his/her expense. Should the Engineer point out the inadequacy of warning and protective measures, such action on the part of the Engineer shall not relieve the Contractor from responsibility for public safety or abrogate its obligation to furnish and pay for these devices.
The Contractor shall provide access as required to accommodate special circumstance at any residence including access for disabled, impaired, special medical needs, etc.
PAYMENT FOR TRAFFIC CONTROL & PUBLIC SAFFETY shall be included in the cost for other items of work and shall include full compensation for furnishing all labor, materials, tools, equipment and incidentals and for doing all the work involving placing, removing, storing, maintaining, moving to new locations, replacing and disposing of the components of traffic control system as specified in the Standard Specifications and these specifications, and as directed by the City. Progress payments for this item shall be paid in accordance with the completion percentage of the project. The lump sum price shall also include non-skid steel plates and temporary AC including installation and removal; all associated temporary signing and striping; flashing arrow signs; flagging and/or flagger costs; and project notifications where no additional compensation will be made thereof.
7-4.2 BEST MANAGEMENT PRACTICES
Per the Federal Clean Water Act, the Contractor is required to eliminate pollution to waters of the United States in regards to this project. This project will require the Contractor to implement sediment from storm runoff and construction activities does not enter storm drains. Some of the primary water pollution control measures anticipated for this project include, but are not limited to, covering all storm drain inlets in the project vicinity with water permeable fabric and gravel bags prior to performing any removal or paving operations; properly fueling and cleaning all equipment/vehicles; maintaining an ample supply of gravel/sand bags on-hand in the event of rain; properly contain any chemicals; properly covering all incoming material trucks and all out going debris hauling vehicles; providing restroom facilities for workers; and regular street sweeping of the Work Area and Haul Routes to the satisfaction of the Engineer.
The requirements of all of the following agencies shall be met and maintained and where there is a conflict between requirements, the most stringent requirement shall govern. 1. Regional Water Quality Control Board 2. County of Los Angeles Flood Control Storm Water Quality.
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anticipated construction operations.
PAYMENT FOR BEST MANAGEMENT PRACTICES shall be included in cost of the other items of work and provide full compensation for all costs incurred by the Contractor for Erosion Control Plan and the cost of any required permits and no additional compensation will be made thereof.
7-3.4 MOBILIZATION
Mobilization and demobilization shall include all site visits; preparation of all submittals; BMPs; obtaining all permits, insurance, and bonds; video recording of the site existing conditions; moving onto the site all materials and equipment; set up of any temporary facilities (e.g. sanitary facilities, parking, construction water, equipment and materials staging area, distribution of all notification materials; removal of same at completion of the work; site cleanup; and other work as required to perform and complete the work.
No material, equipment, or vehicles to be left overnight on sidewalks or streets.
A minimum of one week prior to the start of construction, the Contractor shall video record all areas where construction is to take place. Such video recordings shall be provided to the Engineer before construction commences. These video recordings shall serve as a record of the existing conditions for disputes arising from restoration and should therefore be taken along the line of construction and site access and staging areas at sufficient detail as necessary to clearly depict details of existing conditions. Video recordings shall document existing sidewalks, and adjacent conditions. The video recordings shall be on two USB copies and given to the Engineer. All video recordings shall be indexed and catalogued in such a manner that each photographed area is readily identifiable and shall also indicate the date and time (hour, minutes, and seconds) on which the recording was made. The Contractor shall also video record any unusual conditions encountered during construction that are not already a matter of photographic record. In any areas where existing conditions cannot be determined by means of video recording, the area shall be restored as approved by the Engineer at Contractor's expense. All video recordings shall become the property of the City.
Mobilization shall consist of preparatory work and operations including, but not limited to, those necessary for the movement of personnel, equipment, materials and incidentals to the project site necessary for work on the project and for all other work and operations which must be performed or costs incurred including bonds, insurance, construction permits and/or permit riders as may be required by law, and financing prior to beginning work on the various contract items on the project site.
Mobilization shall also include the cost, time and labor to move the necessary construction equipment to and from the job site, supervisory time on the job by the Contractor's personnel to keep the construction site in a safe condition and all other related work as required for all nonworking days during the course of construction. Contractor is responsible for securing an adequate storage site for equipment and materials.
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Mobilization shall include any work shown on the plans, including removal and/or relocation of an item of work shown on construction documents, which has no corresponding bid item for said work. This work shall include removal of vegetation, removal and/or modifications to the existing planters, wall, fences, gates within the project area, on private properties and within the public right of way as shown on the construction documents. Full compensation relating to that work, including the furnishing of labor and materials, and the disposal of materials shall be included herein.
Mobilization shall include compliance with water quality and air quality laws; furnishing all water required for the construction work; protection of utilities, trees, fences, walls, landscaping, and other facilities; and the relocations as shown on the plans. All complaints received by the City associated with the construction alleging damage to private property and vehicles shall be responded to by the Contractor within one working day of notification. Failure to comply with this provision may result in a penalty of one hundred and fifty dollars ($150.00) per occurrence.
The Contractor shall have on the work site at all times, as its agent, a competent superintendent capable of reading and thoroughly understanding the plans, specifications, other related documents, and directions from the Engineer.
Contractor shall confine his operations and work area within the project area. No encroachment into private property will be permitted without the prior written consent of the property owner.
Obtaining this consent will be the responsibility and the costs of the Contractor. Material shown on the plans or designated in the Special Provisions which is to be used in the reconstructed work repaired or replaced at the opt
expense.
The Contractor shall provide personnel to keep the construction site in a safe condition at all times, including non-working hours. Mobilization shall include scheduling and phasing of the work per the requirements of the City. The Contractor shall coordinate all construction activities with the City.
PAYMENT FOR MOBILIZATION shall be per the Lump Sum (LS) price bid not exceeding 5% of the total bid amount for the project and shall include obtaining and paying for all bonding, insurance, business licenses and permits, as required for entire project, from the City of Hermosa Beach and all related agencies including but not limited to utility companies and private and public agencies. The City of Hermosa Beach will waive its permit fee.
The Contractor shall comply with the requirements specified by each license or permit.
Compensation also includes furnishing a crew to pothole at the discretion of the Engineer.
Progress payments for this item shall be paid in accordance with the completion percentage of the project and shall include the costs of such mobilization and administration for the entire contract period.
7-4.4 SURVEY & CONSTRUCTION STAKING
Contractor shall complete all necessary survey and construction staking required to complete the
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PAYMENT FOR SURVEY & CONSTRUCTION STAKING shall be included in the cost of other items of work and shall include furnishing all labor, equipment, tools and materials necessary for the item of work involved in survey and construction staking required to complete the work and no additional compensation will be allowed thereof. 7-4.5 TEMPORARY CONSTRUCTION FENCING
City inspector.
PAYMENT FOR TEMPORARY CONSTRUCTION FENCING shall be made at the contract unit price per Lump Sum (LS) and shall include furnishing all labor, equipment, tools and materials necessary for the item of work. No additional compensation will be allowed thereof.
Temporary construction fencing shall remain in place and properly maintained by the contractor documents.
7-4.6 SITE CLEARING
Site Clearing shall conform to Subsection 300-1 of the GREEN BOOK as well as Section 31 10 00 of the Technical Provisions, and shall include all clearing and grubbing for the construction of the new improvements, and any clearing and grubbing and/or removal and replacement shown on the plans for which there is no bid item of work.
Site Clearing shall include the removal and disposal of existing concrete, existing foundations and concrete bae for existing benches, existing lawn and planting areas, existing irrigation systems within the limits of work, and other items as shown on the plans and as directed by the City. Contractor shall coordinate with the City prior to the removal of the planting for potential salvaging. Any improvements, landscaping and irrigation destroyed by construction operations shall be replaced by the Contractor. Any replacement including plant materials and irrigation system shall be approved by the City prior to any construction. The Contractor shall control any dust that is caused by clearing and grubbing operations. No additional compensation will be allowed for removal or disposal of any other materials, which may require special handling or disposal.
PAYMENT FOR SITE CLEARING shall be made at the contract unit price per Square Foot (SF) and shall include furnishing all labor, equipment, tools and materials necessary for the item of work. No additional compensation will be allowed thereof. Progress payments for this item shall be paid in accordance with the percentage of total contract work performed. 7-4.7 IRRIGATION SYSTEM
Refer to Section 32 84 00 (Technical Provisions).
PAYMENT FOR INSTALLION OF NEW IRRIGATION SYSTEM as shown on plans and specified herein shall be made at the contract unit price per Lump Sum (LS) and shall include
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furnishing all labor, equipment, tools and materials necessary for the item of work including but not limited to excavation, backfilling, compaction of trenches for installation of irrigation lines, nozzles, spray heads, valves, sleeving, backflow preventer, sensors, quick couplers and irrigation controller. No additional compensation will be allowed thereof. 7-4.8 CAST-IN-PLACE CONCRETE PAVING
Refer to Section 32 13 13 and 32 13 23 (Technical Provisions) Cast-in-Place Concrete Paving shall conform to Section 303-5 of the Standard Specifications and the Project Plans with lines and grades to meet existing. In order to meet ADA requirements, cross slope of new paved surfaces shall be 2%. The remaining concrete adjacent to new paved areas shall be protected in-place and intact. Any damage caused by the Contractor shall be replaced at no cost to the City. The Contractor shall protect all existing drainage pipes and structures and other existing improvements not designated to be removed inplace and intact.
The Contractor shall trim trees; trimming and/or removing shrubs; removing tree roots encountered within paving areas, including saw-cutting and disposing of roots, reconstruction of existing sprinkler systems to match new configurations, soil import (if necessary), backfilling as necessary, grading and compacting; disposal of excess excavated materials and all construction debris. All new improvements will match the existing grades, design and color of existing adjacent concrete within the work area and/or be in accordance with Standard Plans for Public Works Construction, published by BNI.
Miscellaneous Work The following miscellaneous work shall be included in the scope of work for the bid items stated:
1. Adjusting all existing irrigation control boxes, conduits, and conductors etc. to grade
2. Protecting and supporting all existing improvements, not designated to be removed, adjoining and adjacent new improvements including, but not limited to, walls, fences, brick work, PCC, etc.
3. Providing forms; excavating, backfilling and compacting form areas.
4. Disposing of all excavated and removed materials (including PCC, AC, CMB, CTB, slurry backfill, dirt, ivies, plants, trees, roots, stumps, branches, grass, bricks, fences, woods, etc.)
5. Cutting and replanting existing turf to meet walkway.
6. Replacing any broken, cracked, or otherwise damaged water meter boxes and lids prior to placement of walkway.
7. Restoring and replacing all landscaping and irrigation systems.
MATERIAL - Concrete shall be Class 520-C-2500.
PAYMENT FOR CAST IN PLACE CONCRETE PAVING shall be made at the contract unit price per Square Foot (SF) and shall include furnishing all labor, equipment, tools and materials necessary for the item of work including unclassified excavation, removal of existing improvements and materials, preparation of subgrade, construction of cast-in-place concrete, irrigation repair, landscaping restoration, adjustment of miscellaneous utility items
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found within the limits of construction and finishing. No additional compensation will be allowed therefor.
7-4.9 REMOVAL AND RE-INSTALLTION OF PARK BENCHES
Refer to Section 12 93 00 (Technical Provisions).
PAYMENT FOR REMOVAL AND RE-INSTALLTION OF EXISTING PARK BENCHES shall be made at the contract unit price per Each (EA) and shall include furnishing all labor, equipment, tools and materials necessary for removal , protection and temporary storage of the existing park benches, complete removal of concrete bases (under each leg of the bench), all necessary grading and backfilling, and repair of benches necessary for re-installation of park benches by anchoring each leg to new concrete pad, as shown on the plans. No additional compensation will be allowed therefor.
7-4.10
Refer to Section 32 15 13 (Technical Provisions).
PAYMENT FOR STABILIZED shall be made at the
contract unit price per Square Foot (SF) and shall include furnishing all labor, equipment, tools and materials necessary for the item of work. No additional compensation will be allowed thereof.
7-4.11 SOIL PREPARATION AND FINE GRADING
Refer to Sections 32 90 00, 32 22 19 and 32 91 13
PAYMENT FOR SOIL PREPARATION AND FINE GRADING shall be included in bid price for other items of work and shall include furnishing all labor, equipment, tools and materials necessary for the item of work. No additional compensation will be allowed thereof. 7-4.12 WEED ABATEMENT
Refer to Sections 32 90 00 and 32 98 13
PAYMENT FOR WEED ABATEMENT shall be included in bid price for other items of work and shall include furnishing all labor, equipment, tools and materials necessary for the item of work. No additional compensation will be allowed thereof.
7.4.13 INSTALLATION OF STEEL HEADER
Refer to Section 32 94 00
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PAYMENT FOR INSTALLATION OF STEEL HEADER as shown on the plans shall be made at the contract unit price per linear foot (LF) and shall include providing all required labor, material, tools and equipment necessary for excavation, removal and disposal of soil to accommodate complete installation, of the steel header as specified. No additional compensation will be allowed thereof.
7.4.14 CMU BLOCK WALL AND CAP
Refer to Sections 04 22 00 and 32 13 23 (Technical Provisions) PAYMENT FOR CONSTRUCTION OF CMU WALL AND CAP as shown on the plans shall be made at the contract unit price per linear foot (LF) and shall include providing all required labor, material, tools and equipment necessary for excavation, removal and disposal of soil to accommodate construction of the wall, construction of foundation and complete construction of the Concrete Masonry Unit block wall and cap and finish as specified. No additional compensation will be allowed thereof.
7-4.15 RELOCATING AND SETTING EXISTING BOULDERS IN CONCRETE PAYMENT FOR RELOCATING EXISTING BOULDERS as shown on plans and as directed by the City Engineer and setting them in concrete shall be made at the Lump Sum (LS) bid price and shall include furnishing all labor, equipment, tools and materials necessary for the item of work including reinstallation of boulders in cement base as Directed by the City Engineer. No additional compensation will be allowed thereof.
7-4.16 REPAIR OF WOODEN STAIRS
PAYMENT FOR REPAIR OF WOODEN STAIRS as shown on plans and as directed by the City Engineer shall be made at the Lump Sum (LS) bid price and shall include furnishing all labor, equipment, tools, materials and equipment necessary for excavation, removal and disposal of existing improvements and materials, preparation of subgrade, construction of new steps, irrigation repair, landscaping restoration, and finishes as Directed by the City Engineer. No additional compensation will be allowed thereof.
7-4.17 TREES -
Refer to Sections 32 91 13, 32 93 00 and 32 94 00 (Technical Provisions).
PAYMENT FOR PROVIDING AND INSTALLING 24
contract unit price per Each (EA) and shall include furnishing all labor, equipment, tools and materials necessary for the item of work. No additional compensation will be allowed thereof. 7-4.18 SHRUBS 1 GALLON
Refer to Sections 32 91 13, 32 93 00 and 32 94 00 (Technical Provisions).
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PAYMENT FOR PROVIDING AND INSTALLING 1 GALLON SHRUBS shall be made at the contract unit price per Each (EA) and shall include furnishing all labor, equipment, tools and materials necessary for the item of work. No additional compensation will be allowed thereof. 7-4.19 SHRUBS 5 GALLON
Refer to Sections 32 91 13, 32 93 00 and 32 94 00 (Technical Provisions).
PAYMENT FOR PRODING AND INSTALLING 5 GALLON SHRUBS shall be made at the contract unit price per Each (EA) and shall include furnishing all labor, equipment, tools and materials necessary for the item of work. No additional compensation will be allowed thereof. 7-4.20 SHRUBS 15 GALLON
Refer to Sections 32 91 13, 32 93 00 and 32 94 00 (Technical Provisions).
PAYMENT FOR PROVIDING AND INSTALLING 1 GALLON SHRUBS shall be made at the contract unit price per Each (EA) and shall include furnishing all labor, equipment, tools and materials necessary for the item of work. No additional compensation will be allowed thereof. 7-4.21 TURF-SOD
Refer to Sections 32 91 13, 32 92 00 and 32 94 00 (Technical Provisions).
PAYMENT FOR TURF-SOD shall be made at the contract unit price per Square Foot (SF) and includes but is not limited to furnishing all labor, equipment, tools and materials necessary for the item of work, including fine grading, adding approved soils and amendments and installation of new turf . No additional compensation will be allowed thereof. 7-4.22 INSTALLATION OF
Refer to Section 32 94 00 (Technical Provisions).
Cubic Yard (CY) and shall include furnishing all labor, equipment, tools and materials necessary for the item of work. No additional compensation will be allowed thereof. 7-4.23 LANDSCAPE ESTABLISHMENT PERIOD
Refer to Section 32 98 13 (Technical Provisions).
The contractor shall perform work under this section consisting of the following, for a frequency at a minimum of once per week, for a duration of a minimum of 90 calendar days:
1. Litter Control
2. Weed Control
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3. Pest Control
4. Plant Care
5. Fertilization of Plant Materials
6. Plant Replacement
7. Plant Pruning
8. Plant Staking and Adjustments
9. Temporary Plant Protection
10. Operation, Adjustment, and Maintenance of Irrigation Controller and Irrigation System
11. Cleaning of Paving Surfaces
12. Reapplication of Mulching Materials
13. Erosion Control and Drainage
14. Removal of Green Waste
Contractor shall also perform adequate maintenance of turf grass for duration of establishment period, this work shall include irrigation, weed control, minimum one mowing to maintain uniform growth and height, reseeding/overseeding, aeration and fertilization.
PAYMENT FOR LANDSCAPE ESTABLISHMENT PERIOD as indicated in technical provisions for a duration of 90 calendar days shall be made at the contract unit price per Lump Sum (LS) and shall include furnishing all labor, equipment, tools and materials necessary for the item of work. No additional compensation will be allowed thereof.
Add the following subsection:
7-5.1 Work Performed Without Direct Payment.
Tools and materials of any class for which no price is fixed in the Proposal, it shall be understood that such work, equipment, labor, tools, and materials shall be provided without extra charge, allowance, or direct payment of any kind. The cost of performing such work or furnishing such equipment, labor, tools, and materials shall be included in the unit bid prices in the Proposal and no additional compensation will be paid thereof.
7-5.2 Basis for Establishing Costs.
7-5.2.1 Labor.
Replace the entire subsection with the following:
The costs of labor will be the actual cost for wages of workers performing the extra work at the time the extra work is done, plus the employer payments of payroll taxes, health and welfare, pension, vacation, apprenticeship funds, and other direct costs, resulting from Federal, State, or local laws, as well as assessments or benefits required by collective bargaining agreements. 7-5.3 Markup
7-5.3.1 Work by the Contractor.
Replace the entire subsection with the following:
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An allowance for overhead and profit shall be added to th costs and shall constitute the full and complete markup for all overhead and profit on extra work performed by the Contractor. The Contractor shall also be compensated for the actual increase in the bond premium caused by the extra work. The markup shall be:
a. Labor 20%
b. Materials 15%
c. Tool and Equipment Rental 15%
d. Other Items 15%
7-5.3.2 Work by a Subcontractor.
When any of the extra work is performed by a subcontractor, the markup shall be applied to the subcontractor costs. An allowance for the overhead and profit shall be added to the sum of the subcontractor costs and markup and shall constitute the full and complete markup for all overhead and profit for the Contractor on work by the subcontractor. For Contractor markup of subcontractor costs, the allowance shall be 10% on the first $2,000 or portion thereof and 5% on costs in excess of $2,000.
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PART 2 CONSTRUCTION MATERIALS
SECTION 200 ROCK MATERIALS.
200-2 UNTREATED BASE MATERIALS.
200-2.1 General.
Replace the entire subsection with the following:
Materials for use as untreated base or subbase shall be crushed miscellaneous base.
SECTION 201 CONCRETE, MORTAR, AND RELATED MATERIALS.
201-1 PORTLAND CEMENT CONCRETE.
200-1.1 General.
Add the following:
Concrete shall be type 520-C-2500 PSI concrete per the City of Hermosa Beach Standard Plans for Public Works No. 106.
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PART 3 CONSTRUCTION METHODS
SECTION 300 EARTHWORK.
300-1 CLEARING AND GRUBBING.
300-1.2 Root Pruning and Tree Trimming.
Replace the entire section with the following:
a. Equipment
Pruning of roots shall be done using a Vermeer trenching machine with a root pruning attachment or a comparable piece of equipment, as approved by the Engineer. The equipment shall safely cut a narrow trench four to six inches wide to accommodate the installation of the root barrier.
Where sidewalks, curb ramp, or curbs are removed, the roots can be severed at the point adjacent to the edge of the new sidewalk, curb ramp, or curb to be installed, using other pneumatic tools to make the break-out and removal work more efficient.
Any roots over three inches in diameter must be cleanly cut using a chain saw or other sawing tool before the barrier is installed and the trench backfilled. b. Execution
Tree roots and other objectionable material shall be removed from areas of construction to a depth of 6 inches below the bottom of concrete. Tree roots shall be removed from parkways if visible or if instructed by Engineer.
Cleanly cut roots do not need to be painted or treated in any way other than the installation of root deflection barrier.
300-1.4 Payment.
Replace the entire subsection with the following:
There shall be no separate payment for root pruning or tree trimming; all costs thereto shall be considered included in the Contract unit prices for the items of work for which the pruning or trimming is required.
There shall be no separate payment for clearing and grubbing; all costs thereto shall be considered included in the Contract unit prices for the items of work for which clearing and grubbing is required.
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PART 4 EXISTING IMPROVEMENTS
SECTION 400 PROTECTION AND RESTORATION.
Add the following subsections:
400-4 TREES.
The Contractor shall take care to protect all trees not approved for removal by the Engineer.
There shall be no separate payment for protection of existing trees; all costs thereto shall be considered included in the Contract unit prices for the items of work for which the protection is required.
PART 8 LANDSCAPING AND IRRIGATION
SECTION 800 MATERIALS.
800-1 LANDSCAPING MATERIALS.
800-1.1 Topsoil.
Add the following:
directed
by the Engineer.
800-1.4.2 Trees.
Add the following:
New trees furnished by the Contractor shall be 24 inch box trees.
Add the following subsection:
800-1.4.2.1 DELIVERY, STORAGE, AND HANDLING OF TREES
Trees shall not be pruned before delivery. Contractor shall protect trunks, fronds, growing tips, and root systems from sun scald, drying, sweating, whipping, and other handling and tying damage during transport. Tree shall not be bent or bind-tie trees in such a manner as to destroy natural shape. Trees shall be covered and protected during delivery.
Immediately after digging field-grown trees wrap root systems in wet burlap or other suitable material to keep root system constantly moist until installation at the project site. Deliver freshly dug field-grown trees with firm, natural balls of earth of sufficient depth to include fibrous and feeding roots. Protection of trees during harvesting, transport, and storage shall be the storing prior to performing any Work.
Handling Trees:
SP-30
Lift and handle trees with extreme care. Remove wrappings or containers (where applicable) carefully. If root ball is cracked or broken during handling, tree will be rejected and a new one shall be furnished by the Contractor at no additional cost to the City. a. Handle container-grown tree(s) only by its container. b. Contractor shall not handle tree(s) by its fronds or root ball. c. Contractor shall not drop any tree(s).
d. Contractor shall not bind or handle tree(s) directly with wire or rope at any time. Pad trunk of tree(s) whenever using hoisting cables, chains, slings, or straps. e. Climbing Spikes: Use of climbing spikes for any work performed on tree(s), pre or postinstallation, is prohibited. f. Should Contractor engage in handling any tree(s) by unacceptable method(s) the City shall reserve the right to reject any of the mishandled tree(s). Contractor shall replace rejected tree(s) with approved tree, at no additional cost to the City. g. Deliver tree(s) only after preparations for planting have been completed and a minimum amount of time elapses between delivery to site and installation. If planting is delayed more than six (6) hours after delivery, set tree(s) in shade, protect from weather and mechanical damage, and keep roots moist. Do not remove container-grown tree stock from containers before time of planting.
h. Labeling: For all field-dug tree(s), attach label to tree showing genus, species, variety, height, name of grower point of origin. For containerized tree, furnish standard products in standard containers bearing original labels. Legibly show genus, species, variety, and name of grower.
SP-31
SECTION 801 INSTALLATION.
801-2 EARTHWORK AND TOPSOIL PLACEMENT.
801-2.1 General.
Add the following:
The Contractor
SSPWC, to match adjacent sidewalk grade(s) as indicated on plans or directed by Engineer.
Payment for FURNISH AND PLACE PARKWAY TOPSOIL TO MATCH ADJACENT SIDEWALK GRADE shall be per the Contract unit price per cubic yard, and shall include furnishing all labor, materials, tools, equipment, transportation, and incidentals for performing all work involved in this section, complete and in place, as shown in the Plans and in accordance with the Contract Documents.
801-4 PLANTING.
801-4.5 Tree and Shrub Planting.
Replace the entire subsection with the following:
Installation practices of the trees shall be performed during those periods when weather and soil conditions are suitable and in accordance with locally accepted horticultural practices.
Soil moisture levels prior to planting shall be no less than seventy-five percent (75%) of field capacity. The determination of adequate soil moisture for planting shall be in the sole judgment of the Public Works Inspector, and their decision shall be final. a. If the soil moisture level is found to be insufficient for planting installation, planting pits shall be filled with water and allowed to drain before commencing planting operations. b. Any planting area that may become compacted in excess of eighty-five-percent (85%) relative compaction (due to construction operations or other activities during the Contract) shall be tilled and thoroughly cross-ripped to a minimum depth of nine-inches (9 alleviate the condition, taking care to avoid all existing subsurface utilities, drainage, etc. c. Contractor shall notify the Engineer, in writing, on the anticipated commencement date and length of duration of the landscape installation.
d. Contractor shall confirm with the Engineer locations of all trees prior to planting. e. No more plant materials and trees shall be distributed in the planting area on any day than can be installed and watered on that day. Trees shall be planted and watered immediately after the removal of their containers, as applicable.
f. Contractor shall protect existing and new improvements and systems installed prior to planting installation, and shall protect in place until completion of work. g. Planting holes shall be approximately square with vertical sides twice the depth and width of the plant container or ball, and shall larger if necessary to permit handling and planting without injury or breakage of the root ball or root system. h.
i. A layer of prepared soil mix shall be deposited in the planting hole. j. The tree shall be set approximately at the center of the hole. k. Prepared soil mix shall be deposited in the remainder of the hole to finish grade.