wastewater design · MCU22/0192

5.3 Planting Regime.

Plantings improve the efficiency of the system with the uptake of nutrient and natural
transpiration processes. Further qualified advice from local nurserymen and the local
regulatory authority should be preferred when choosing plants that may be more or
less suitable or acceptable to your region. Grasses should be kept well mown and
raked for better evaporative and transpiration processes (avoid throwing grass
clippings onto the Land Application Area). Shrubs should be kept well pruned for
better evaporative and transpiration processes. Endemic vegetation must be retained
and/or reinstated.

Following the site preparation, installation and pre-commissioning tests the Land
Application Area shall be allowed to revegetate with sufficient appropriate shallow
rooting grasses or shrubs, and the retention mounds/transpiration buffer zone shall be
vegetated with sufficient appropriate shallow rooting grasses, shrubs or small trees as
determined by historical performance outcomes.

Following the site preparation, installation and pre-commissioning tests Land
Application Area servicing the Proposed Cabins shall have in place a 100mm
(minimum) cover of quality organic mulch. This 100mm (minimum) layer of quality
organic mulch must be retained and replenished as necessary throughout the
serviceable life of the Land Application Facility to maintain adequate cover.

Following the site preparation, installation and pre-commissioning tests the Land
Application Area servicing the Future Shed shall be allowed to revegetate with
appropriate shallow rooting grasses, and the retention mounds/transpiration buffer
zones shall be heavily revegetated with sufficient appropriate shallow rooting grasses
or shrubs determined by historical performance outcomes.

Unearthed Geotechnical P/L recommends further assessment regarding planting
requirements be sought prior to, or at the time of installation of the Land Application
Facility. It may be necessary to implement an additional planting regime.

Do not plant shrubs or trees within the surface water diversion drains, as these drains
need to be kept free of obstruction and debris for maximum diversion efficiency.

We recommend the application of dolomite at a nominal rate (say, 0.25 kg/sqm)
when preparing the existing soil. This will assist with both plant growth and/or pH
control. Further applications will be required during the serviceable life of the Land
Application Area.

 

Unearthed Geotechnical P/L. 16 Design Report 022-164