Effluent Disposal Report - RFI - RAL26-0015 · RAL26/0015

All stormwater from upslope is to be diverted area from the area.

A shallow spoon drain is to be constructed uphill of the irrigation area if deemed necessary
to divert water around the area. A 150mm high retention mound is to be installed downhill
to capture any runoff if deemed necessary.

The installer is to ensure the pump within the HSTP is sufficient to operate and pressure
the proposed irrigation system but does not over pressurize and cause the sprinklers to
aerosol.

The pipework from the HSTP shall be 25-32mm dia. purple line poly, buried within a
200mm thick sand bed to prevent damage if deemed necessary.

Control valves may be necessary to control flow and prevent misting. Spray plumes are to
be a maximum of 2m in dia. & 0.5m High. The installer should install non return valves if
needed.

The area should be constructed so there is no pooling or run off.

Two warning signs stating “Recycled Water, Avoid Contact, Do Not Drink” are to be
installed around the disposal area.

All work is to be carried out by suitably licensed person.

If soil or site conditions are found to be different from the investigation or failure is
observed, contact us immediately.


Performance Solution (Turf Valves)
The design has considered site and soil conditions and has also been discussed with the
landowner.
The irrigation area has been designed using correct DIR and hose design as per local
Council requirements.
The spray from the sprinklers shall not exceed 500mm in height, 2000mm in dia. and be
heavy droplet in nature that prevents misting and drift.
All pipework and materials used are to be new, meet relevant standards and be fit for use.
The irrigation area must be provided with a treatment plant manufacturer approved method
of isolation to allow the homeowner to move the sprinklers on a regular basis. This
isolation must not harm the treatment plant and not allow the sprinklers to come during the
moving of said sprinklers. (Sprinklers should be moved a minimum of every 3-4 days
however this will depend on usage and soil type)
Category 4 soils or better will assist in even distribution of treated effluent however regular
movement of sprinklers is needed to avoid runoff, ponding, or failure.




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