Viridian III Technical Specification OPW1 [As Published] · 142008.256

                                                                        VIRIDIAN III - Landscape Works

12.3   CHARACTERISTICS

All topsoil shall have the following general characteristics:

   ƒ   Texture to be medium to fine friable loam.

   ƒ   Saturated soils will not be accepted.

   ƒ   Nitrogen Drawdown Index (NDI) – testing of soil to be carried out to confirm organic
       materials in the soil mix have been fully composted (comply with AS 4419, clause
       5.12).

   ƒ   All mixes to be mechanically screened to comply with AS 4419, clause 5.15 and
       thoroughly blended to provide a uniform distribution of particles.

   ƒ   Limit the use of components that display high shrinkage tendencies (i.e. Bagasse,
       Paper Mulch, spent Mushroom Compost, etc).

   ƒ   No strong odours to persist once materials are spread and watered.

   ƒ   No sharp items or chemical components deemed as dangerous to health or safety to
       be present i.e., metal, glass;

   ƒ   Free from damaging levels of phenolic and tannic toxins - Refer AS 3743 Appendix
       E;

   ƒ   Soil must comply with toxicity index criteria as stated in AS 4419 clause 5.11 and
       Appendix F;

Vegetative reproductive material shall be absent. The Contractor shall also confirm in writing
that the topsoil does not contain “Nutgrass” (Cyperus rotundus). If the weed is present, the
Contractor shall notify the Builder immediately with recommendations for its complete
removal. Remove the weed by the approved method.

   ƒ   Soils must not contain chemicals that will result in contamination of land (e.g. heavy
       metals, hydrocarbons, pesticides, etc).

   ƒ   Soils must not contain fire ants or nesting material.

   ƒ   Composted organic matter for native plants should be low in phosphorous such as
       fully composted slash-pine bark.

   ƒ   Aged of composted cellulose, paper waste, umcomposted organic matter, ash and
       coalstone is to be excluded from soil blends.




12.4   TOPSOIL STORAGE

If it is necessary to stockpile topsoil on site do so in locations as directed by the Builder, to
heights not exceeding 900 mm. Protect from wind.

12.5   TOPSOIL TYPES

All topsoil must meet the requirements of the Interim Australian Standard for ‘Soils for
Landscaping and Garden Use’, AS4419 (Int) – 1996 free from stones, weeds, sticks, roots,
rubbish and any material toxic to plant growth.
EDAW Aust                              Page 35                       February 2008


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VIRIDIAN III - Landscape Works

 

 

12.3. CHARACTERISTICS

 

All topsoil shall have the following general characteristics:
= Texture to be medium to fine friable loam.
= Saturated soils will not be accepted.
= Nitrogen Drawdown Index (NDI) — testing of soil to be carried out to confirm organic
materials in the soil mix have been fully composted (comply with AS 4419, clause

5.12).

= All mixes to be mechanically screened to comply with AS 4419, clause 5.15 and
thoroughly blended to provide a uniform distribution of particles.

= Limit the use of components that display high shrinkage tendencies (i.e. Bagasse,
Paper Mulch, spent Mushroom Compost, etc).

= No strong odours to persist once materials are spread and watered.

= No sharp items or chemical components deemed as dangerous to health or safety to
be present i.e., metal, glass;

= Free from damaging levels of phenolic and tannic toxins - Refer AS 3743 Appendix
E;

= Soil must comply with toxicity index criteria as stated in AS 4419 clause 5.11 and
Appendix F;

Vegetative reproductive material shall be absent. The Contractor shall also confirm in writing
that the topsoil does not contain “Nutgrass” (Cyperus rotundus). If the weed is present, the
Contractor shall notify the Builder immediately with recommendations for its complete
removal. Remove the weed by the approved method.

= Soils must not contain chemicals that will result in contamination of land (e.g. heavy
metals, hydrocarbons, pesticides, etc).

= Soils must not contain fire ants or nesting material.

= Composted organic matter for native plants should be low in phosphorous such as
fully composted slash-pine bark.

= Aged of composted cellulose, paper waste, uncomposted organic matter, ash and
coalstone is to be excluded from soil blends.

 

12.4 TOPSOIL STORAGE

 

If it is necessary to stockpile topsoil on site do so in locations as directed by the Builder, to
heights not exceeding 900 mm. Protect from wind.

 

 

12.5 TOPSOIL TYPES

 

All topsoil must meet the requirements of the Interim Australian Standard for ‘Soils for
Landscaping and Garden Use’, AS4419 (Int) — 1996 free from stones, weeds, sticks, roots,
rubbish and any material toxic to plant growth.

EDAW Aust Page 35 February 2008