Consent Condition 42 - Cleanfill definition
Table 1: Acceptable Cleanfill Material
|
Asphalt (cured) |
< 5% by volume of the overall fill material. |
|
Bricks |
< 5% by volume of the overall fill material. |
|
Ceramics |
< 5% by volume of the overall fill material. |
|
Concrete – un-reinforced |
< 5% by volume of the overall fill material. |
|
Concrete – reinforced |
< 5% by volume of the overall fill material. |
|
Fibre cement building products |
< 5% by volume of the overall fill material. Inert material comprising
cellulose fibre, Portland cement and sand.
|
|
Glass |
< 5% by volume of the overall fill material. |
|
Soils, rock, gravel, sand, clay, etc. |
Acceptable if free of contamination. |
|
Tiles (clay, concrete ceramic) |
< 5% by volume of the overall fill material. |
|
Vegetation material |
< 2% by volume of the overall fill material. |
Table 2: Acceptance Levels
for Cleanfill Material
|
Constituent |
Acceptance Criteria (mg/kg). |
|
Arsenic
|
<12 |
|
Boron
|
<45 |
|
Cadmium |
<0.65 |
|
Chromium |
<55 |
|
Copper
|
<45 |
|
Lead |
<65 |
|
Mercury |
<0.45 |
|
Nickel |
<35 |
|
Zinc |
<180 |
|
Polycyclic Aromatic Hydrocarbons (PAHs) |
Less than laboratory detection limit |
|
Organochlorine pesticides
|
Less than laboratory detection limit |
Advice note:
Background contamination
levels for the site receiving cleanfill can be found in the Auckland
Regional Council, Technical Publication No. 153, Background concentrations of
inorganic elements in soils from the Auckland Region (2001), specifically – the
Non-Volcanic Range of trace elements.