| USE |
NAME
OF MATERIAL |
ANNOTATION |
X |
Ammonium lignosulfate |
Prohibited. |
X |
Arsenate-treated
lumber |
Includes
copper chromium arsenate. Existing arsenate-treated lumber
does not need to be removed and since problems with disposal
of treated posts is part of the concern with them, recycling
of existing posts within the landscape is allowed. Arsenate-treated
lumber cannot be in contact with soil used to grow vegetables
(boxed beds). |
A |
Borate
|
Sodium
tetraborate and octaborate may be used as wood preservatives.
Only mined sources acceptable. |
A |
Calcium lignosulphate |
Allowed as a dust suppressant or inert ingredient.
See ‘Lignin sulfonates’ |
A |
Clay
products |
Allowed.
|
A |
Concrete
products |
Fresh
concrete may temporarily change the soil pH in its vicinity.
Appropriate protection measures should be taken. |
X |
Cooper
chromium arsenate |
Prohibited. |
A |
Copper
hydroxide |
Allowed
as a wood preservative. See 'Wood preservatives (allowed)'
for restrictions. |
A |
Copper
oxides |
Allowed
as a wood preservative. See 'Wood preservatives (allowed)'
for restrictions. |
A |
Copper
oxychloride |
Allowed
as a wood preservative. See 'Wood preservatives (allowed)'
for restrictions. |
A |
Copper
sulphate |
Allowed
as a wood preservative. See 'Wood preservatives (allowed)'
for restrictions. |
A |
Copper
zinc chromate |
Allowed
as a wood preservative. See 'Wood preservatives (allowed)'
for restrictions. |
X |
Creosote
|
Prohibited. |
A |
Dust
suppressants
(allowed)
|
Water, lignin sulphonates and
non-synthetic plant, mineral, or animal based materials. See
‘Lignin sulphonates’. |
X |
Dust
suppressants
(prohibited)
|
All materials for dust suppression
not specifically allowed are prohibited including, but not
limited to asphalt and all petroleum products. |
A |
Irrigation
products
|
Polyethylene (Poly) and polyvinyl
chloride (PVC) products are allowed for use in ornamental
landscapes. |
A |
Lignin sulphonates |
Lignosulphonic acid, calcium
lignosulphate and sodium lignosulphate. Allowed as a dust
suppressant. Ammonium lignosulphate is prohibited. |
A |
Lignosulphonic acid |
Allowed as a dust suppressant
or inert ingredient. |
A |
Limestone
|
Allowed
where the resulting pH change of the soil has no or minimal
negative impact on the environment. |
X |
Pentachlorophenol |
Prohibited. |
A |
Polyethylene (Poly) |
Allowed for irrigation systems in ornamental
landscapes |
A |
Polyvinyl chloride (PVC) |
Allowed for irrigation systems in ornamental
landscapes |
A |
Pressure
treated lumber |
See ’Wood preservatives’
Copper chromium arsenate (CCA) lumber is prohibited as described
in “Arsenate treated lumber”. Creosote and pentachlorophenol
treated lumbers are prohibited. |
A |
Rock,
natural |
Allowed. |
A |
Sodium lignosulphate |
Allowed as a dust suppressant or inert ingredient. |
A |
Sodium
octaborate |
Allowed
as wood preservatives. Only mined sources acceptable. |
A |
Sodium
tetraborate |
Allowed
as wood preservative. Only mined sources acceptable. |
A |
Wood
preservatives
(allowed)
|
Sodium
octaborate and sodium tetraborate |
X |
Wood
preservatives
(prohibited)
|
Copper chromium arsenate, creosote,
and pentachlorophenol are prohibited. |
