06/1168 - Change a Development Approval [As Published] · 132006.1168.02

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The irrigation system shall be capable of supplying 25mm of water to all fields per week within a 4 day 4
hour window. At present only Class B recycled water is available (it meets all requirements for Class A
water, except for the added chlorine). The water management plan dictates that no access to the fields
is available for 2 hours after completion of watering or if ponded water is present. Therefore, the
watering cycle is to be complete by 10am to allow use from midday. The system must be configurable to
allow the users to change the watering pattern should access be required before midday on any given
day.

The system shalt be controlled by a suitable controller placed on site, powered from the treatment plant
(control cable to be installed alongside the irrigation line). The controller shall include a rain sensor, soil
moisture sensor and flow sensor.

The design of the irrigation system shall be submitted to the Superintendent for approval prior to
installation works commencing.

7.5 Grass Seeding

7.5.1 Balance Area

Grass seed shall be selected so as to achieve a long term cover of green “speedy” couch. Prior to issue
of On Maintenance, grass cover shall average 100%. Coverage shall be determined using a 1m? piece
of F41 reinforcing mesh placed directly over the area to be measured and counting the number of
100mm x 100mm squares where at least one strike has been achieved. At least one strike in each
square represents 100% cover.

An appropriate seed mix shall be used with due regard to the time of year. Fertiliser and water may be
applied by the Contractor to achieve the necessary cover.

7.6 Hydroseeding

Hydroseeding shall be used where shown on the drawings or directed by the Superintendent. A
thoroughly mixed slurry of seed, fertiliser, mulch, water and binder shall be applied to the area to be
grassed. The mixture is to be spread evenly over the prescribed area.

Grass cover at issue of Off Maintenance is to achieve 100% cover as defined above.

7.7 Turfing

Turf is to be provided in accordance with the drawings (i.e. at the edge of concrete footpaths) or as
directed by the Superintendent. Unless otherwise specified, "A" grade “Wintergreen” couch turf is
required, with a minimum thickness of 25 mm. The turf shall be supplied by a commercial grower of
cultivated turf, and shall be handled and installed so as to avoid drying.

All areas to be turfed shall be treated with pre-emergent sprays at the recommended mix strengths
application intervals. It is essential that these playing areas have first priority in establishment. lmigation
equipment must be functional prior to turfing.

41/22382/11840 Girraween Sports Precinct 44
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