HSTP Design · MCU26/0104

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.




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