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SPECIFICATION FOR LANDSCAPE WORKS AT

21-25 DOZER DRIVE, MACKAY FOR

JJ RICHARDS & SONS PTY. LTD.

ISSUE A– 22nd December 2015 GENERAL Supply materials and execute works described in this specification or as shown on Landscape Drawing Nos. 2015.141 Landscape Plan EXTENT OF WORKS The landscape works shall comprise: Section 1 – General Section 2 – Earthworks Section 3 – Drainage Section 4 – Edging Section 5 – Topsoiling & Mulching Section 6 – Bioretention basin Section 7 – Planting Works Section 8 – Turfing Section 9 – Irrigation Section 10 – Establishment CONSTRUCTION DETAILS LD100.01- Individual Tree planting in Turf LD100.03 - Typical tree planting and staking LD100.04 - Advanced tree planting LD103.07 - Bio Retention Planting in Filter Media LD103.08 - Bio Retention Planting Setout LD501.01 - Concrete Edge

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SECTION 1 – GENERAL

1.01 Standards

AS 1289 - Methods of Testing Soils for Engineering Purposes AS 1428.1 - Design for Access and Mobility – General Requirements for Access – New building work AS 1428.4 - Design for Access and Mobility – Tactile Ground Surface Indicators AS 3600 - Concrete Structures AS 3743 - Potting mixes AS 4373-1996 - Pruning of Amenity Trees AS 4419-2003 - Soils for Landscaping and Garden Use AS 4454-1999 - Compost, soil conditioners and mulches AS/NZ 4455-1997 - Masonry Units and Segmental Pavers AS 4586 - Slip Resistance Measurement of New Pedestrian Surface Materials. AS 4970 - Protection of Trees on Development Sites

1.02 Samples SAMPLES – EXTERNAL WORKS

REQUIREMENT: Submit representative samples of the plants, fabricated items, and other materials and products specified.

SAMPLES: Submit each sample in the condition in which it is proposed to supply it to the site.

REJECTION: Replace, at no additional cost, samples rejected as unsuitable for use, including samples rendered unsuitable by the process of examination (e.g. plants examined for root condition). Samples not rejected may be included in material for use in the works.

1.03 Approved Suppliers

PLANT MATERIAL: Obtain plant material, including plants, seeds and mulch from approved suppliers. Furnish proof of ordering if requested. No extension of time will be granted if plant material is not available because of late ordering. Advise immediately if supply difficulties are encountered.

1.04 Inspections

NOTICE: Give not less than 48 hours notice so that the following may be inspected, as applicable:

– Plant materials available at source of supply – Plant materials delivered to site – Setting out completed – Clearing completed – Subsoil drainage installed – Sub-grades cultivated and/or prior to placing topsoil, paving materials or

footings – Tree holes excavated and prepared for planting – Plant materials set out before planting

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– Planting, staking, tying, seeding and turfing completed – Fixtures and completed – At the beginning of each month during the maintenance period and the

defects liability period – Upon completion of establishment period – Upon completion of defects liability period 1.05 Guarantees / Warranties

Provide all guarantees and warranties as required by this specification. 1.06 Safety Fencing

Ensure the site is secured by safety barriers to prevent any unauthorised entry.

SECTION 2 – EARTHWORKS

2.01 Site Clearing

TREES TO BE RETAINED are those shown on the drawings.

LIMITS OF CLEARING: Clear only those site areas shown on the drawings.

REMOVE trees, logs, stumps, roots, shrubs, scrub and boulders. Do not remove grass and topsoil unless otherwise specified.

GRUB OUT roots and stumps over 75 mm diameter to a minimum depth of 500 mm below subgrade in paved areas or below finished surface in unpaved areas. Backfill grub holes with suitable spoil from excavations compacted in layers to the density of the surroundings undisturbed soil.

BREAK UP and remove slabs, foundations, pavings and other debris found on the surface, or within 200 mm of the base or finished surface in areas to be landscaped.

2.02 Excavation and Filling

EXCAVATION: Excavate over the site as required to conform to the subgrade levels. Remove all rocks and boulders protruding above the finished subgrade surface. NOTE: Bulk earthworks are to be done by others (Refer engineer’s drawings) but detailed excavation will need to be undertaken by the Landscape Contractor to meet the finished surface levels of certain landscape elements and planting bed topsoil requirements. MAKE GOOD excavations below finished subgrade levels as specified below.

COMPACT loose surface material in excavated areas.

FILLING MATERIAL: Fill shall be approved excavated material from site free from perishable materials or any material that will not form stable fill.

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FILLING PLACEMENT: Place and compact filling as required in uniform layers, each 150 mm maximum thickness. Compaction equipment shall be approved by the Superintendent. Fill material shall be compacted uniformly to 95% of maximum dry density as determined by test AS 1289 E.2.1.

2.03 Finishing

Trim profiles to achieve smooth flowing even grades. 2.04 Tree Protection

GENERAL: Significant trees to be retained and protected occur across the site as identified on the plans. All trees to be retained within (and bordering) the extent of works of the project shall be protected from damage incurred during the works program. The Contractor is to ensure that all employees, sub-contractors and any other persons on site are made aware of tree protection requirements at all times. MARKING: Mark all trees to be retained with a zincanneal tag, painted yellow. Secure the tag to the tree with a loose galvanised steel wire band. At the end of the Contract, the Superintendent will check and remove the tags. TREE PROTECTION ZONES: Trees to be retained are to be protected within tree protection zones (TPZs) as follows -

• The perimeter of TPZs is to be outside a radius measured from the trunk,

unless specified otherwise by an Arboricultural Consultant or indicated otherwise on the plans. The radius is calculated as 12 x the trunks diameter measured at breast height (DBH).

• All TPZs are to be fenced with Temporary Fencing Panels (TFP) or Arboricultural Consultant approved alternative.

• Temporary Fencing Panels are to be 1800mm high chain wire mesh panels held in place with concrete feet or alternatively, 1800mm high plywood or wooden paling fencing panels.

• No person, vehicles or machinery are to enter the TPZs except with the written consent of Council or an Arboricultural Consultant.

• Any underground service installations must be bored and utility authorities must utilise a common trench where possible.

• No fuel, oil dumps or chemicals are allowed to be used or stored within TPZs and the servicing and re-fuelling of equipment and vehicles must be carried out away from the root zones.

• No storage of material, equipment or temporary building is to take place within the TPZs.

• Nothing whatsoever is to be attached to any tree including temporary services wires, nails, screws or any other fixing device.

• TPZ fencing is not to be relocated without specific approval from an Arboricultural Consultant.

• The TPZ should be mulched to a depth of 125mm using well composted forest blend mulch and irrigated to a depth of 400mm immediately after mulching. A liquid fertilizer should be applied after irrigation as recommended by the consulting arborist. Where the existing landscape within the TPZ is to remain unaltered (e.g. garden beds or turf) mulch may not be required.

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WEEDING: Weeding may be necessary within tree protection zones. Manual removal and/or selective spot spraying (nozzle kept close to ground to avoid any overspray, individual weeds spot-sprayed) methods are to be used within these areas around existing trees. EXCAVATION: Do not remove topsoil from within the drip line of trees to be retained unless otherwise specified. If it is necessary to excavate within the TPZ, use hand methods or an Air Spear to expose roots. Open up excavations under tree canopies for as short a period as possible. Do not place spoil from excavations against tree trunks, even for short periods. All care shall be taken to avoid damage to the bark of trees. PIER CONSTRUCTION: Measures to be carried out include the following:

• Minimise compaction of soil within drip zone of the tree • Hand digging of pier holes to expose major lateral roots. Note: If major

lateral roots are exposed, pier hole to be relocated • All root pruning to be carried out as per note below • Decompaction and aeration of root area as per note below • Mulch and water drip zone to field capacity according to weather

conditions as per TPZ notes.

TREE ROOT TREATMENT: Do not cut tree roots exceeding 25 mm diameter unless permitted by the Arboricultural Consultant. All roots requirining removal should be cut by sharp, clean implements i.e. large lateral roots to be cut with a chainsaw, smaller roots to be cut with a sharp handsaw and hair roots to be cut with sharp secateurs. Any roots with a diameter less than 25mm diameter should be pruned back to a side branch. Root hormone treatment should be applied to aid the regrowth of roots and a general purpose fungicide shoul also be applied to any damaged roots. All care should be taken to prevent the compaction of soil surrounding the root system. BACKFILL to excavation around tree roots with an imported topsoil mixture as specified. Add fertilizer at the rate of 0.5kg/m3 as specified in PLANTING. PLACE the backfill in layers, each of 150 mm maximum depth, solidly compacted to eliminate voids. Do not backfill around tree trunk to a height greater than 150 mm above the original ground surface. WATERING: Immediately after backfilling, thoroughly water the root zone surrounding the tree. DECOMPACTION: If the ground under the tree canopies has been unduly compacted decompaction of the soil is to be undertaken using an air spear. Decompact the soil in offset concentric circles approximately one metre apart. Carry out soil tests and apply appropriate slow release fertilizer through the created decompaction holes. RETAINED TREES are to be assessed by a qualified arborist to identify necessary pruning and tree surgery works. Where pruning of retained trees is required it is to be undertaken in accordance with AS4373 - 2007. DAMAGE TO EXISTING TREES: Should any tree be damaged during the work under the Contract, and if the Superintendent permits repair work to be done, such repair work should be performed by a qualified Arborist at no extra cost.

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REMOVAL: If repair work is considered impracticable, or is attempted and fails, if so directed, remove the tree and root system, make good as necessary, and either replace the tree or pay damages, as determined by the Superintendent. REPLACEMENT: Provide, plant and establish as part of the works, at no extra cost to the Principal, a replacement tree of the same species and similar size or as approved by the Superintendent. DAMAGE ASSESSMENT: If replacement as part of the works is not approved, pay for any tree removed pursuant to the above, damages assessed by the Superintendent as the cost of replacement by others or to a maximum cost of $3,000 unless otherwise specified.

2.05 Erosion Control

Take all proper precautions to prevent erosion, including, but not limited to, the following:

– construction of temporary drains. – diversion of concentrated flows to points where they can pass through the

site without damage. – construction of temporary fencing. – progressive restoration of disturbed areas during the Contract Period.

MINIMISE WATER velocities by following contours and by the use of trapezoidal cross-sections. Where instructed, construct sandbag weirs or other structures in temporary drains to retard flows.

CLEAR OUT silt traps before they reach 50% of storage capacity.

2.06 Disposal of Spoil

All debris resulting from site clearance, and excavated material, surplus to fill and topsoil requirements, is to be disposed of off site.

2.07 Cultivation

PREPARE subgrade by cultivation to receive topsoil.

CONTAMINATED MATERIAL: If harmful materials, including diesel or engine oil, cement, or the like, has been spilt on the subgrade or topsoil, excavate and remove the contaminated material from the site and replace with topsoil at no extra cost.

CULTIVATE by ripping to the depths specified below, to loosen the compacted ground. Do not disturb services, tree roots.

REMOVE stones exceeding 50 mm diameter and any unwanted matter including roots, sticks and weeds brought to the surface during cultivation.

MIX in any materials, specified to be incorporated into the subgrade.

TRIM SURFACES to specified shape and levels after cultivation so that the minimum specified depth of topsoil remains on completion of preparation.

– GRASSED AREAS: Cultivate to a minimum depth of 250 mm – PLANTING BEDS: Cultivate to a minimum depth of 200 mm

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SECTION 3 – DRAINAGE 3.01 Surface Drainage

When setting out lines and levels of garden, grassed and paved areas, ensure the accurate formation of grades and crossfalls leading to drains, enabling the areas to dry quickly and surplus water to reach the drainage system and in such a way that potential erosion channels are avoided.

Minimum crossfalls, unless otherwise stated shall be as follows:

– Paving & Synthetic Lawn Areas 1:75

– Grassed and mulched garden areas 1:50 3.02 Subsoil Drains

Refer Engineers Drawings 3.03 Drainage Sumps

Refer Engineers Drawings

SECTION 4 – EDGING 4.01 Concrete Edging

Where shown on the landscape plans construct a concrete edge to DETAIL - LD501.01.

SECTION 5 – TOPSOILING & MULCHING 5.01 Topsoil

EXTENT AND TYPE:

PLANTING BEDS: Imported Topsoil GRASSED AREAS: Imported Topsoil NOTE: NO TOPSOILING OVER FILTERMEDIA COMPONENT OF

BIORETENTIONBASINS.

DELETERIOUS MATERIAL: Imported topsoil shall be free from noxious weeds, rocks, roots, rubbish or any other deleterious material. All imported topsoil containing nut grass shall be rejected and the topsoil shall be removed from the site. TOPSOIL TYPES:

IMPORTED TOPSOIL shall be a Topsoil Mix with a Sandy Loam base to AS 4419 which shall comply with the following or equal approved:

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Sandy Loam Component COMPOSITION CRITERIA

Sand 75% by mass Silt < 10% by mass Clay < 15% by mass Organic matter 3-15% by mass Salt content < 1.2 dS/m pH 5.5 – 7.5 Topsoil Mix COMPOSITION CRITERIA Sandy loam As per Sandy Loam - 45% by volume Composted aged cellulose or equal 35% by volume Composted organic matter 20% by volume Fertilizer elements Crop King 88 and Urea @ 1.5 kg/m3

A 1kg soil sample shall be provided of the Imported Topsoil Mix. The Landscape Contractor shall provide soil tests of each sample to show compliance with AS4419 and the composition and criteria set out in this specification or confirmation that the soil has been obtained from an approved supplier. Testing shall be carried out in an approved laboratory.

5.02 Topsoil Spreading

PLACE topsoil in the locations indicated on the drawings and to the following depths:

PLANTING BEDS: 350 mm TURFED AREAS: 100 mm

LIGHTLY COMPACT so that the finished surface is smooth, free from lumps of soil, ready for cultivation and planting at the required levels. Allow for the thickness of mulch where specified.

FEATHER topsoil edges into adjoining undisturbed ground. Finish flush with abutting kerbs, mower strips, and paved surfaces unless otherwise specified. Prevent excess compaction by construction plant of newly scarified or topsoiled areas.

COMPLETE the backfilling of service excavations, trenches, sand and the like in existing or new topsoiled areas with an equal depth of topsoil.

5.03 Mulching APPLICATION: To all planting beds shown on the drawings.

NOTE: DO NOT PLACE MULCH IN BIORETENTION BASINS. MULCH TYPE: 25mm hoop pine mulch

DEPTH: 75mm

MULCH shall be free from soil, weed growth, and other green material or deleterious matter. SAMPLES: Provide a sample of the mulches specified.

SPREADING: Spread mulches evenly to depth specified and raked smooth to finish flush with surround levels. Do not place mulch in contact with stems of plants.

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5.04 Mulch Collars TREES planted within grassed area are to be provided with a 1m dia mulch collar (125mm thick) around the base of the tree. Pull mulch away from stem of tree to prevent collar rot. Refer Detail LD101.01 for Detail.

SECTION 6 – BIORETENTION BASINS 6.01 Bioretention – Planting BIO RETENTION PLANTING IN FILTER MEDIA - Refer Detail LD103.07 for

Planting Detail.

PLANTING SETOUT – Refer Detail LD103.08 for planting module set out

PLANTING HOLES, PLANTING BEDS: Excavate planting holes to a size that allows placement of the plant without damage to its root system.

SECTION 7 – PLANTING WORKS 7.01 Plant Material

GENERALLY: Plants shall be vigorous, well established, hardened off, of good form consistent with species or variety, not soft or forced, free from disease and insect pests, with large healthy root systems and no evidence of having been restricted or damaged. Trees shall have a single leading shoot.

PLANT SIZES:

– Where a minimum plant height is specified in the "PLANT SCHEDULE"

the height shall be the vertical distance between the top of the pot and the natural top of the plant whilst standing vertically in the pot.

– Where a minimum plant height is not specified in the "PLANT

SCHEDULE" provide the plant of a height appropriate to the pot size.

SUBSTITUTIONS: Make no substitutions unless provided in writing. Substitutions will not be approved if plants have not been made available for inspection at the Nursery within 30 days of the Contract being awarded.

LABELLING: Label at least one plant of each species or variety in a planting area with a printed plastic tag.

REPLACEMENTS: Replace, with plants of the same specified type, quality and size, any plants which fail or are damaged during the work under the Contract.

WARRANTY: Furnish a warranty from the supplier attesting that the plants are true to the specified species and type, and free from diseases, pests, weeds and the like.

STORAGE: Wherever possible, plants shall be planted immediately after delivery to the site. If this is not possible, keep them in good condition by

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appropriate storage methods, or as may be directed. Prevent theft, drying out or damage from any cause including frost, wind, sun, vermin, animals and the like. Provide an on-site nursery for holding plant stock on site for more than 48 hours, of sufficient size, with provision for watering.

POTTING ON: If directed, pot plants into larger soil-filled containers to prevent them becoming root bound if there is an unforeseen delay. The Contractor shall bear the cost of potting on. Do not carry out potting on unless authorised.

POT SIZES: Supply plants in weed-free containers of the sizes specified in the "PLANT SCHEDULE" shown on the drawings.

7.02 Plant Schedule

Refer to Plans for Plant Schedule. 7.03 Planting

LOCATION: Do not vary plant locations from those shown on the drawings unless otherwise directed. It if appears necessary to vary the locations and spacing to avoid service lines, or to cover the area uniformly, or for similar reasons, apply for directions.

TIMING: Do not plant in unsuitable weather conditions, such as extreme heat, cold, wind or rain.

PLANTING HOLES, PLANTING BEDS: Excavate planting holes to a size that allows placement of the plant without damage to its root system.

INSTALL STAKES, if required, as specified to DETAIL – LD100.03. WATER the plants and planting areas thoroughly before planting begins. Keep the areas moist during planting.

REMOVE PLANTS from containers carefully to ensure minimum soil loss and root disturbance. Root prune any root bound plants. Top prune only as directed.

POSITION PLANTS in the centre of the holes and set plumb at such a level that after trimming and settlement, a normal and natural relationship of the plant with the ground surface will be established.

FERTILIZER shall be an approved prolonged release type having NPK ratio of 16:4.4:8.3. Place around plant approximately half depth of root ball, but not more than 250 mm and approximately 50 mm away from root tips. PLACE at time of planting at the rate recommended by the manufacturer. Furnish evidence of manufacturer's recommendations.

ADVANCED TREE PLANTING: Refer DETAIL – LD100.04.

BACKFILL with topsoil, as specified, and firm to avoid air pockets. Where a Topsoil Mixture containing super-absorbent is used, ensure mixture is used dry prior to backfilling.

WATER the plants immediately after planting and thereafter, as required to maintain growth rates free of stress.

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7.04 Spraying

REPORTING: Report any evidence of insect attack or disease amongst plant material immediately it is noted.

SPRAYING: If so directed, spray with an insecticide and/or fungicide approved prior to use, in accordance with manufacturer's recommendations, and to comply with statutory requirements.

SECTION 8 – TURFING 8.01 Turfing

TURF SPECIES: ‘A’ Grade Green Couch

Turf to have a minimum 25 mm thickness of soil.

CULTIVATION: Cultivate surface soil for the whole area to a fine tilth for an even depth of 100 mm. Bring surface to smooth even grades, free from mounds and hollows such that the whole surface drains fully in accordance with the finished designed surface contours and levels. Ensure the specified depth of topsoil remains on the surface upon completion of surface preparation.

FERTILIZER: Apply an approved complete fertilizer having an NPK ratio of 14:15:10 at the rate of 100g/m2 before turfing. Spread evenly over the ground and rake lightly into the surface.

STORAGE: Where turf is stored prior to laying, place in a cool shaded location or cover with hessian. Stack turf in rolls as delivered. Lay turf within 36 hours of being cut. Where unexpected delays occur, roll out turf on flat surface with grass up and water as necessary, to maintain good condition.

LAY THE TURF of species specified along the land contours with staggered, close butted joints, and so that the finished turf surface is as shown on the drawings. As soon as practicable after laying, roll the turf with a roller weighing not more than 90 kg per metre of width for sandy or light soils.

WATER as necessary to keep the soil moist to a depth of 100 mm.

POST GRASSING FERTILIZER: Three weeks after turfing, broadcast evenly a minimum 10g/m2 of sulphate of ammonia fertilizer over the whole of the area of turfing.

PROTECT newly turfed areas against traffic until grass is established. Lift failed turf and relay with a new turf.

REMOVE WEEDS that emerge in the turfed areas.

TOP DRESSING: When turf is established, light top dress to a depth of 10 mm with topsoil as specified. Rub the dressing well into the joints and correct any unevenness in the turf surface.

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SECTION 9 - IRRIGATION

9.01 Project Scope

Description of works: The design, supply, installation and commissioning of an automatic irrigation system to landscaped areas as follows:

1. All planting beds 2. All turfed Areas

Unless otherwise advised: Water supply is to be tank water with an automatic top up system to

mains supply. NOTE: An application shall be made to Mackay Water for connection of irrigation systems to the water main. The Contractor shall arrange with Mackay Water for the timing of the work.

Unless directed otherwise, above ground water storage tank will be documented and installed by others.

Unless directed otherwise, Irrigation pressure pump shall be installed by irrigation contractor.

Power supply is to be 240 VAC for irrigation controller and pressure pump.

The irrigation system shall be comprised of popup sprinklers for reduced vandalism, however subsurface irrigation information is included in this specification

Contractors are required to comply with all the relevant local and Australian standards.

NOTE • Local water authority or/and local council guidelines are to be adhered

to at all times with regard to the potential use of recycled water with all irrigation system installations. It is the irrigation contractor’s responsibility to ensure the installed irrigation system meets all these requirements to ensure legal operation of the system.

9.02 Australian Standards

Requirement: Unless recommended otherwise by the Manufacturer, all work will be carried out using equipment and installation process as outlined in the relevant Australian Standards. Standards Referenced: ASA185 Solvent welding cement for use with rigid uPVC pipe and fittings. AS1159 Polyethelene Pipes for Pressure applications. AS1167 Welding & Brazing filler materials. AS1345 Identification of the contents of piping, conduits and ducts. AS1432 Copper tubes for water, gas & sanitation. AS1477 Unplasticised PVC (uPVC) pipes and fittings for pressure application (metric). AS1585 Capillary alloy threaded pipe fittings for use with pipe threads of Whitworth form. AS1628 Copper alloy gate valves and non-return valves for use in water supply and hot water services. AS2032 Code of practice for installation of uPVC pipe systems

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AS2053 Non-metallic conduits and fittings AS2129 Flanges for pipe, valves and fittings AS2845 Water supply mechanical back flow prevention devices. AS3000 SAA Wiring rules. AS3500 National Plumbing and drainage code. AS4130 PE Pipes, pressure applications.

9.03 Design Information and Criteria

This Specification is not project or site specific. The intent is to provide a basis on which a professional standard, fully operational and industry compliant irrigation system can be provided to the Client. The equipment and installation processes described are intended to produce an irrigation system which complies with all applicable industry and local authority and Australian standards. Submission of the design to the Client or their Superintendent prior to commencement of works is the responsibility of the Irrigation Contractor. The Irrigation Contractor will inspect the site and verify the available water flow and pressure, prior to lodgement of design and Tender. GENERAL: This Specification sets out the requirements for the design and supply of all materials, equipment and labour necessary for the complete and proper implementation of the irrigation works. The Irrigation Contractor will be responsible for all works required. Items not specifically described in this Specification, but which would normally be required to produce a fully functioning irrigation system are considered part of the required works. This Specification sets a minimum standard required for the design, works, materials and installation. It is the Irrigation Contractor’s responsibility to bring to the Client or their Superintendent’s attention any concerns, potential obstacles or possible improvements before construction commences. Items may be listed and/or described in this specification which may not necessarily be required for the intended scope of works. However those items are included for reference if the client choses to alter the extent or the method of irrigation treatment to the designated landscape works. Unless stated or directed otherwise:

• 300mm Hi pops shall be utilised for garden irrigation, 100mm pop ups shall be utilised for turf irrigation.

• Within the contract documentation all dimensions are in mm and pressure is in kPa.

• It is the responsibility of the Irrigation Contractor to provide a detailed design and schedule as part of the Tender Submission.

CO-ORDINATION: Co-ordinate the irrigation works with all other works on site to ensure satisfactory completion of works. Liaise with the other Contractors on site, the Client and their Superintendent to ensure all infrastructure works meet the requirement of the design. APPROVED CONTRACTORS: Requirement: All work will be performed by Irrigation installers with a minimum of 5 years experience in this type of work. All work will be performed by Irrigation installers with a minimum of a QBS

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Gold Card and or IAA Accreditation All work will be supervised by a person whose competency is acceptable to the Client or his Superintendent.

DRAWINGS: The Irrigation Contractor accepts full responsibility for the system operation as per the submitted design. As-Constructed Drawings: As Constructed Drawings of the installed irrigation system, to scale, shall be submitted to the Client or their Superintendent prior to Practical Completion. Provide the As Constructed data in Compact Disk, DWG format and 2 x Full Size Paper copy. WARRANTY: The irrigation Contractor will warrant both materials and installation against fault, and repair or replace without delay and at no cost to the Client or their Superintendent. The duration of the warranty is to be 12 months after completion of Defects / Maintenance period. Details of any extended Warranty Periods offered by the manufacturers are to be provided to the Client at time of Tender.

9.04 Design Parameters

The Irrigation Works should be designed incorporating the following industry standards: Mains Assembly Hydraulics: Full Flow Mains Offtake, Water Meter and Backflow Prevention Device & fittings. The design shall not exceed the following maximum total flows for the following size mains assemblies: 25mm = 1.0 litres/ second 32mm = 2.0 litres/ second 40mm = 3.0 litres/ second 50mm = 5.0 litres/ second 80mm = 8.0 litres/ second 100mm = 10.0 litres/ second Mainline Hydraulics Maximum main line velocity: 1.0 metres / second Max. Pressure Loss: 30 m/Head / 1000 metres, for mains less than 500metres long Max. Pressure Loss: 15 m/Head / 1000 metres, for mains over 500metres long Lateral Line Hydraulics: Maximum lateral line velocity: 1.5 metres / second Maximum pressure loss between the First and Last outlets on a Station is to be no more than 10% of the designed operating pressure of the selected irrigation outlets.

Standard Control Wiring: Sizing to be to AS 3000, or no less than: Common Wire: Run Length from Controller to Automatic Valve: maximum 500metres - 7/0.85, 4.0 mm2 Run Length from Controller to Automatic Valve: maximum 350metres - 7/0.67, 2.5 mm2 Active Wire: Run Length from Controller to Automatic Valve: maximum 500metres - 7/0.67, 2.5 mm2 Run Length from Controller to Automatic Valve: maximum 350metres - 7/0.50, 1.5 mm2

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Spray Irrigation Outlets:

Maximum spacing between Heads to be no more than: 55% of Wetted Diameter Rotary Irrigation Outlets: Maximum spacing between Heads to be no more than: 50% of Wetted Diameter

9.05 Materials and Installation

COPPERWORK: All copper pipework and connections upstream of backflow prevention device and for reticulation of water shall be Min. Type A, Connections and Brackets to relevant Australian Standards. Contractor to liaise with client for specific requirements of copper work installation. BACKFLOW PREVENTION DEVICE: For the prevention of possible irrigation water backflow into the potable supply the Backflow Prevention Device shall meet the Level of Protection and Hazard Rating requirement as per Local Authority Regulations. PUMP: (Where not provided by others) The irrigation pump is to provide pressure boosted water to the irrigation system. The pressure and flow requirements are to be nominated on the irrigation contractor’s submitted design drawings. The Pump is to be installed on a concrete pad (refer Concrete work). Pump installation is to include connection to suitable power supply, connection to water source (tank) and all required suction and delivery pipe work. Automatic Pump operation is to be via pressure differential by either Pressure Control unit or Pressure Tank assembly, Pump is to include low flow cut out switch. Should tank source be below ground, pump selection is to ensure suitable lift capability for depth of tank is included in the selection calculation. Pump assembly shall have a suitably sized security enclosure to minimise vandalism. Refer Security Enclosures & Metalwork finishes. CONCRETE WORK: Requirement: Stable, low maintenance foundation to equipment e.g. Mains Connections / Backflow Prevention Devices / Pumps Minimum standard to be 30mPa mass concrete c/w F32 mesh in a one-piece pour. Dimensions of length / width to ensure 25mm clearance all-round after equipment installation. Finish slab 25 above finished ground level SECURITY ENCLOSURES & METALWORK FINISHES: Requirement: Security enclosures to Pressure Pumps and Backflow Prevention Devices are to be comprised of minimum 25mm SHS framework with open steel mesh panels. Security enclosures are to have lockable hinged panels for access if dimensions are greater then 1000mm in any direction. Smaller enclosures may be manufactured as a one piece unit which is removable from the protected device. One piece units must padlocked to base concrete slab. Metal Finish is to provide a low maintenance, professional presentation, and finish is to be corrosion resistant. Metal finish is to apply to all Security enclosures.

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TRENCHING AND BACKFILLING: Trenching is to be in continuous straight lines and uniform grades, with trench bottom level and free of rubbish and sharp projections. The trench width is to have a minimum of 25 horizontal clearance around the pipe work. Minimum cover over Mains pipe work is to be 450 and 300 for Laterals. Back-fill with approved trench spoil free of rock sticks, construction debris, and pipe off-cuts. Back-filling is to provide the same as or better than original soil compaction PIPEWORK INSTALLATION: Pipe work is to be installed strictly to relevant Manufacturers instructions. Threaded Fittings are to be taped unless otherwise recommended.

MAINLINE PIPEWORK AND FITTINGS: All mainline pipe work is to be either uPVC, Rubber Ring Joint, Class 12 to AS 1477 or M.D.P.E. PE 80, PN 12.5 to AS / NZS. 4131 Fittings shall be a minimum Class 12, Poly, compression / screwed joints, Gunmetal or Poly Tapping Saddles, Tapping saddle nuts, bolts and washers will be Stainless Steel. LATERAL LINE PIPEWORK AND FITTINGS: All Lateral pipe work will be M.D.P.E. PE 80, PN 12.5, to AS / NZS. 4131 Fittings shall be minimum Class 12, Poly, compression / screwed joints, Gunmetal or Poly Tapping Saddles, Tapping saddle nuts, bolts and washers will be Stainless Steel. ISOLATING GATE VALVES: Isolation of mainline sections for staged installation and ease of maintenance. All Isolation Valves are to be rated to minimum 1033 kPa. Installation is to be in a dedicated, lockable valve box AIR VALVES: Exhaust of air and made-up gases from mainline high-points. Installation of the Air Valve is to be off TOP of pipe. CHECK VALVES: Protection of outlets against low-head drainage; where an outlet does not have an integral check valve supplied by the manufacturer. AIR / VACUUM RELIEF VALVE: Evacuation of air from In-Line Drip Tube laterals Installation is to be at high points in In-Line Drip Tube, as per the relevant Manufacturer’s instructions PRESSURE REDUCTION VALVE: Regulation of inflow pressure in Drip Tube laterals. Installation is to be at high points in In-Line Drip Tube, as per the tubing Manufacturer’s instructions. FLUSHING VALVE: Reduction of sediment build-up within In-Line Drip Tube. Install as recommended by the tubing manufacturer AUTOMATIC VALVES: 24 VAC solenoid valve, sized to suit flow rate, and suitable for a working pressure of 1033 kPa. Valves will be installed in a dedicated, lockable valve box AUTOMATIC VALVES (Battery): Requirement:

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Battery operated / programmable solenoid valve, allowing independent actuation by the self contained programme. Solenoid valves are to have onboard program, capable of start time and run time and soak time selection. Solenoid valves are to be sized to suit flow rate, and suitable for a working pressure of 1033 kPa. Selection is to suit sites without 240 VAC power supply. Selected unit is to have a minimum of three year warranty. Installation is to be in a dedicated, lockable valve box. BALL VALVES: Isolation of Sundry Control Valves, Size of the ball valve is to suit inlet diameter of Sundry Valve, Pressure rating to be 1033 kPa. Installation is to be between the base of the nominated valve and the valve riser. SECONDARY FILTER: Secondary filtration of water source to reduce maintenance to Drip-Line, Filter to be minimum 120 mesh, 20 diameter. VALVE BOXES: All valves shall be installed in a Green PVC valve box, Min. 250 diameter to permit ready access to all internal components, the valve box shall be lockable by stainless steel or galvanised bolt as deterrent to unauthorised access. Installation is to be so as to contain each valve with fittings and wire joints. Do not support valve box on valve or pipe work provide brick course to bring the box to grade. Fill base of valve box with min.50 deep drainage layer of 20 Dia. washed river pebbles. CONTROL WIRE CONDUITS : (Where not provided by others) Conduit for low voltage cables is required for protection of exposed irrigation control cabling, or where the control cabling is run separately from the main line. 24 VOLT AC CONTROL CABLING: Active: control cabling: 5 core, 7, 9 and 13 core 7/0.50, 1.5 sq.mm. PVC insulated POLYETHYLENE sheathed wire Common control cabling: Single core, 7/0.67, 7/0.85, 7/1.35 PVC insulated, POLYETHYLENE sheathed wire The wire sizes outlined apply to Control Wiring runs up to a maximum of 400 m, the maximum voltage drop between the Irrigation Controller and the solenoid valve shall be less than 10% of coil operating voltage. Installation is to be in the mainline trench, beside and below the pipe work. Provide a 250mm loop of control wiring at each valve box. Run the cables with extreme care in unbroken lengths from controller to solenoid valves. All joins are to be made within a valve box. Solder all joints before application of Heat Shrink, all bare cables are to be waterproofed correctly and suitably sealed once connections are finalised. AUTOMATIC CONTROL UNIT: Automatic control will provide unattended operation of the irrigation system. It shall be a stand-alone controller with integral 240 VAC power source, Multi start times, multi independent programs, “Cycle and Soak” capability, and have provision for Sensor input/ override Installation is to be strictly to Manufacturer’s instructions, in a location as directed by the Client or his Superintendent. All wiring to access via PVC conduit sweep bends. Connect 24 AC control wire from controller to 24 AC solenoid valves

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AUTOMATIC CONTROL OVER-RIDE: Automatic over-ride of the irrigation programme in the event of excessive rainfall. Rainswitch to be compatible with the Automatic Controller selected. Install as directed, Install wiring in PVC Conduit OUTLET PERFORMANCE: Even irrigation coverage of all nominated landscaped areas, Minimise water wastage by ensuring accurate adjustment off hard surfaces, correct programming and correct nozzle selection.

OUTLET SELECTION: All selected outlets are to meet the above performance criteria. Outlets may be selected from the following types. All selections are to be clearly defined on the drawings or in the Tendered documentation, for approval by the Client or their Superintendent.

IN-LINE DRIP-TUBE DRIP EMITTERS MINI SPRAY OUTLETS SPRAY HEADS MEDIUM ROTORY HEADS LARGE ROTARY HEADS COMMERCIAL ROTARY HEADS

IN-LINE DRIP-TUBE: Requirement: Localised, low-flow, low precipitation irrigation of landscaped garden areas. The Drip Emitters are to be pressure-compensated to 250 kPa. The Drip Emitter tubing is to be LDPE and impregnated with Treflan Drip tube shall be generally installed to ensure adequate coverage is provided to the Landscape. Outlets are to be spaced to ensure plants receive adequate water. Tubing is to be installed without kinks at all times Tubing is to placed at the soil and mulch interface and staked at 500 centres using galvanised stakes, Tubing is to remain buried at all times DRIP EMITTERS: Requirement: Low volume, low pressure, adjustable flow, Drip outlets Operating at 150 kPa (nominally) Installation is to be at a nominal spacing to be 0.20 metres from planting. Drip Emitter is to be connected to the lateral line by 4mm low density poly pipe. Drip Emitter to be stake mounted. MINI SPRAY OUTLETS: Requirement: Low volume, low pressure, fixed spray, fixed above-ground shrub outlets with fixed arcs of 3600 Operating at 150 kPa (nominally) Installation is to be at a nominal spacing to be 2.0 metres SPRAY HEADS: Requirement: Coverage: 0m-5m Where indicated on the drawings; the Landscape shall be irrigated by fixed spray, pop-up and shrub head outlets. The outlets shall be adjusted to minimise overspray onto hard surfaces.

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All sprinklers shall feature arc and radius adjustment, fixed arcs between 00 and 3600 Operating at 200 kPa (nominally). MEDIUM ROTOR HEADS: Requirement: Coverage: 5m-8m Where indicated on the drawings; the Landscape shall be irrigated by Rotary Pop-up and Shrub-Head Irrigation. The outlets shall be adjusted to minimise overspray onto hard surfaces. All sprinklers shall feature single nozzle configuration, adjustable arcs between 00 and 3600, and radius adjustment. Operating at 240 kPa (nominally) LARGE ROTARY HEADS: Requirement: Coverage: 8m-12m Where indicated on the drawings; the Landscape shall be irrigated by Rotary, Pop-up and Shrub-Head Irrigation. The outlets shall be adjusted to minimise overspray onto hard surfaces. All sprinklers shall feature, single or multiple nozzle configuration, arcs adjustable between 150 and 3600, radius adjustment. Operating at 275 kPa. (nominally) COMMERCIAL ROTARY HEADS: Requirement: Coverage: 12m-15m Where indicated on the drawings; the Landscape shall be irrigated by Rotary, Pop-up Irrigation. The outlets shall be adjusted to minimise overspray onto hard surfaces. All sprinklers shall feature single or multiple nozzle configuration, arcs adjustable between 150 and 3600, Operating at: 275 kPa.(nominally) STREAM ROTOR HEADS: Requirement: Coverage: 5m-8m Where indicated on the drawings; the Landscape shall be irrigated by Stream Rotor, Pop-up and Shrub-Head Irrigation. The outlets shall be adjusted to minimise overspray onto hard surfaces. All sprinklers shall feature stream nozzle configuration, matched precipitation across all arcs and arc configuration between 150 and 3600, Operating at: 250 kPa.(nominally) POP-UP-BUBBLER: Requirement: Where indicated on the drawings; the Landscape shall be irrigated by bubbler pop-up outlets. The outlets shall have pressure compensation. All sprinklers shall operate at 172 kPa (nominally) SPRINKLER INSTALLATION DETAILS: Requirement: Unless otherwise shown on the accompanying Details the following criteria applies to the installation of all sprinklers. Within designated turf areas the sprinkler shall be a 100 pop up sprinkler, install flush with surrounding grade. At the designated edge between garden and turf areas the sprinkler shall be a 300 pop up sprinkler install minimum of 20 above mulch level. Within designated garden and to wall and garden interfaces areas the sprinkler shall be a shrub head sprinkler install so that nozzle clears existing foliage.

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Should it not be possible to install 300 Hi pop due to foundations or impenetrable surface then 150 pop up may be substituted. This must be marked on the As Constructed and suitable notification given to the Client and or his Superintendent. ARTICULATED RISERS: Articulated risers are to provide flexible connection between the lateral pipe work and sprinkler outlets. Pop-Ups are to be installed on a 3 elbow Schedule 80 PVC, riser which is a minimum of 250 long, and of a diameter to match the inlet size of the relevant sprinkler. Shrub-Heads are to be installed on a Schedule 80 PVC, riser of a suitable length to ensure clearance of landscape min 250 long, and of a diameter to match the inlet size of the relevant sprinkler. TESTING: The irrigation contractor shall thoroughly flush and test the irrigation system before final inspection for handover to the Client or their Superintendent. PRACTICAL COMPLETION: The Contractor shall commission the system in conjunction with the Client or his Superintendent, prior to Practical Completion. Commission Works will include:

Provide the Client or his Superintendent with the As Constructed data as specified.

Provide the Client or his Superintendent with the warranty details as specified.

Provide the Client or his Superintendent with the name, address and telephone number of the Contractor

Provide personal operating instructions to personnel nominated by the Client or his Superintendent

MAINTENANCE PERIOD: Unless otherwise nominated the period shall be 12 weeks following Practical Completion MATERIALS AND INSTALLATION:

PROPRIETARY ITEMS: Requirement: The following is a list of irrigation equipment detailed within the Specification. Alternatives may be proposed for verification and approval by the Superintendent. MATERIALS SPECIFIED Access Sleeves PVC Class 9 Pressure Pump Davey, Grundfos or Lowara Mainline Reticulation PVC Class 12 MDPE PN12.5 Air Valves A.R.I. Automatic Controls Hunter or Irritrol/TORO or Rain Bird Automatic Control Modules Hunter or Irritrol/TORO or Rain Bird Automatic Valves Hunter or Irritrol/TORO or Rain Bird Ball Valves Philmac Bronze Gate Valves Kitz Fig. ASH or Johns 59M Cast Iron Fittings Nortite Commercial Stream Rotor Type Sprinklers Hunter or Irritrol/TORO or Rain Bird Commercial Rotor Type Sprinklers Hunter or Irritrol/TORO or Rain Bird Common and Active Cabling TYFLO, IRRITROL /TORO, Rain One / Olex Controls Enclosure B+R Enclosures Double O-Ring Risers and Articulated Risers Spears or Lasco Drip Emitters Adjusta 8 – Stake Plus PPI or HR Products Gear Drive Rotor Type Sprinklers Hunter or Irritrol/TORO or Rain Bird In-Line Drip Tube Rootguard

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Kerb Markers Queensland Grates and Manholes Lateral line Reticulation MDPE PN12.5 Light Rotor Type Sprinklers Hunter or Irritrol/TORO or Rain Bird Mini / Micro Sprays Hunter or Irritrol/TORO or Rain Bird Poly Fittings Alpha 16 Pressure Regulation Module To be compatible with Valve selection Quick Coupling Valves Hunter or Irritrol/TORO or Rain Bird Rain-switch To be compatible with Controller selection Spray Type Sprinklers (A) Hunter or Irritrol/TORO or Rain Bird Stream Rotor Type Sprinklers Hunter or Irritrol/TORO or Rain Bird Popup Bubbler Hunter PCB Bubbler Nozzles fitted to Spray Type Sprinklers body Tapping Saddles Milnes Valve Boxes Irritrol or HR Products Wire Joints TYFLO Heat Shrink

SECTION 10 - ESTABLISHMENT

10.01 General

Landscaped areas shall be maintained by the Contractor from the time of installation until the end of the Landscape Establishment Period. The Plant Establishment Period shall be twelve (12) weeks. Maintenance shall include watering, fertilizing, mowing, weeding, pruning, pest and disease management, site drainage and general tidying of the treated areas.

NOTE: Contractors shall develop and submit a detailed maintenance program to the Superintendent for approval prior to commencement of the ‘on maintenance’ period. The maintenance program shall detail a proposed monthly maintenance programme for the length of the specified maintenance period and detailing each procedure. The Contractor shall submit the maintenance programme for acceptance by the Mackay Regional Council Superintendent no less than one (1) month prior to the commencement of the ‘on maintenance’ period. The Contractor shall be responsible for undertaking all works under the approved maintenance programme, with all landscape plantings to be established and maintained in-situ for a minimum of one (1) month prior to the completion of the specified ‘on maintenance’ period.

10.02 Watering

Watering shall be carried out at sufficient frequency to ensure establishment of the plants and to achieve the specified acceptance criteria. Notwithstanding this requirement, watering shall be carried out at the minimum frequency stated in Table 1. The stated rate of watering shall include any rainfall. One watering shall be defined as the application of –

(a) for turfing, 10L/m2 of water in not less than one hour; (b) for planting, in accordance with Table 2.

Watering of seeded and turfed areas shall be applied using a fine spray. Watering of such areas in weeks 8 and 12 shall occur immediately after fertilizing. Watering of plants shall be directed at the base of the plant to thoroughly water the root ball. Watering shall not cause erosion or displacement of treated areas.

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No water shall be allowed to spray onto, flow across or pond on paved areas including roadways, bikeways and footpaths.

Minimum watering frequency Table 1

Week after Installation Turfing Planting

1 Once every day Once every day 2,3,4 Once every second day Twice every Week 5 and 6 Twice every week Twice every Week 7,8,9,10,11,12 Twice every week Once every week

Table 2

Container Size (litres) Minimum volume of Water (litres)

<25 5 25-100 15 >100 30

10.03 Mowing

Mowing shall be carried out on all areas which have been treated with turf.

Treated areas shall be mowed to the heights and in accordance with the schedule set out in Table 3.

Table 3 Landscape Treatment

When to Mow Height after Mowing (mm) During Week after

installation When Height Exceeds (mm)

Grass seeding 12 100 50+ 15 Turfing 8 and 12 80 50+ 15

Mowing shall be carried out prior to fertilizing and watering. Grass clippings shall be dispersed evenly over the cut area ensuring that clippings are not spread over other areas. In areas where mowers cannot gain access, grass shall be trimmed with power scythes. Grass around kerbs, walls, guardrails, fences, light poles, service posts, service pits, ground markers and other structures shall be trimmed with a mechanical lawn trimmer.

10.04 Fertilising

Fertilising of grassed and turfed areas shall be carried out during weeks 8 and 12 after installation. Fertiliser shall be of the type and shall be applied at the rate specified in table 4.

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Table 4 Landscape Treatment Fertiliser Type Application Rate (kg/ha)

Grass seeding F3 400 Turfing F3 400

Fertilising shall occur after mowing, where applicable. Fertilising shall not be applied to wet grass. Fertilising shall not occur during periods of high temperature (ie > 28 °C) All fertilized areas shall be watered immediately after fertilizing in accordance with clause 24.2. Fertilising of plants is not required during the Landscape Establishment Period.

10.05 Weeding

Weeds shall be removed from all areas of living landscape treatments on a regular basis during the Landscape Establishment Period. Weeds shall not be allowed to grow for longer than 4 weeks. Where weeds are established for longer than this period, as determined by the Superintendent, weed removal may be carried out by others at the direction of the Superintendent and the costs so incurred recovered as a debt due from the Contractor to the Principal.

10.06 Pruning

Plants shall be pruned as necessary to promote vigorous new growth. 10.07 Pest and Disease Management

Plants shall be monitored for pest and disease incidence on a weekly basis. Acceptable plant protection techniques shall be employed to manage any infestations. The use of horticultural diagnostic services (Queensland Department of Primary Industries – Crop Health Services) shall be employed where the Superintendent so directs to ensure a positive diagnosis of a pest or disease outbreak. The costs incurred shall be recovered from the Contractor.

10.08 Site Drainage

All landscape areas shall be maintained with sound drainage principles and the avoidance of runoff from the Site shall be enforced. Each irrigation of the Site shall be over a period of time that allows water infiltration (percolation) via the soil and does not produce run-off water.

10.09 Tidying

All landscaped areas shall be kept in a neat and tidy condition during the Landscape Establishment Period. Tidying shall include but not be limited to –

(a) The collection and removal of litter, plant prunings and dead plants (b) Removal of mulch from roads and pathways (c) Checking and adjusting plant support stakes and ties and

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(d) Making good any disturbance to the surface of mulches. (e) The collection and removal of litter, plant prunings and dead plants (f) Removal of mulch from roads and pathways (g) Checking and adjusting plant support stakes and ties and (h) Making good any disturbance to the surface of mulches.

10.10 Plant Replacement

Replace at no extra cost, any plant which dies from the cause whatsoever during the Establishment period. Plant replacements shall be of the same size and species and equal to size and similar plants at the time of death. Planting areas are to be assessed weekly for plants that have died; dead plants are to be replaced within 5 working days.

10.11 Grass Replacement

Replace any dead or dying areas of grass during the establishment period.