On-Site Effluent Report

7.3     Methods of Irrigation

Sprinklers with a throw of not more than one meter shall be used and produce coarse droplets (instead of a fine
mist) to minimise the risk of aerosol dispersion and wind drift of effluent. The plume height shall not be more than
300 mm above the finished surface of the irrigation area.
Siting of surface irrigation shall be in a location away from regular pedestrian traffic and recreational areas, so there
is no risk of direct spray or wind driven spray onto such areas.

The attached details show the position and construction techniques surface irrigation.


Effluent shall not be used for irrigation of fruit or vegetables.

No Vehicle loading or children’s recreational areas to be applied or constructed within the Land
Application Area.


7.4    Preparation of irrigation area

When a proposed irrigation area has a low permeability, it is particularly important to ensure that the permeability of
the soil in the irrigation area is improved and maintained and that there is an adequate cover of porous and fertile
topsoil to act as immediate storage of effluent applied to it, and to support rapid growth of vegetation on the area to
maximise evaportranspiration.

It is recommended that topsoil be imported to improve rapid growth of vegetation and improve the
evaportranspiration process.


7.5     Requirements of irrigation system

All irrigation pipework and fittings shall comply with all parts of AS 1477 or AS 2698.2. The distribution irrigation
lines shall have a minimum depth of 100mm. There shall be no cross connection between any irrigation pipework
and potable water supply.

Along the boundary of the surface irrigation area there shall be at least two warning signs clearly visible to inform
the occupants of the premises that recycled water is used for irrigation. Each sign shall comply with AS 1319 and
have:

(a) lettering visible at 3m and
(b) wording:               Recycled Water
                           Avoid Contact
                           DO NOT DRINK

Prior to the use of the system, the warning signs and the landscaping and surface preparation must be completed



In no instance shall effluent be used for irrigation of fruit or vegetables.

No Vehicle loading or children’s recreational areas to be applied or constructed within the Land
Application Area.




AUSTRALIAN SOIL INVESTIGATION                              7                                      ASI Ref: 260090(A)