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Appendix G1: Estimated Waste Type Compositions

Note: Totals/subtotals may not sum exactly due to rounding.

  Kerbside collections 25 Special:
6–12 August 2007
Special:
1–7 December 2007
Special:
1–7
March 2008
Special:
25–31
May
2008
Paper Recyclable 13.5% 0.0% 0.0% 0.0% 0.0%
Multi-material/other 0.9% 0.0% 0.0% 0.0% 0.0%
Subtotal 14.4% 0.0% 0.0% 0.0% 0.0%
Plastics Recyclable 1.9% 0.0% 0.0% 0.0% 0.0%
Multi-material/other 11.5% 0.0% 0.0% 0.0% 0.0%
Subtotal 13.4% 0.0% 0.0% 0.0% 0.0%
Putrescibles Kitchen waste 38.3% 0.0% 0.0% 0.0% 0.0%
Green waste 4.3% 0.0% 0.0% 0.0% 0.0%
Multi-material/other 5.1% 16.7% 34.9% 30.1% 48.1%
Subtotal 47.7% 16.7% 34.9% 30.1% 48.1%
Ferrous metals Primarily ferrous 4.0% 0.0% 0.0% 0.0% 0.0%
Multi-material/other 0.8% 0.0% 0.0% 0.0% 0.0%
Subtotal 4.8% 0.0% 0.0% 0.0% 0.0%
Non-ferrous metals   0.9% 0.0% 0.0% 0.0% 0.0%
Glass Recyclable 6.0% 0.0% 0.0% 0.0% 0.0%
Multi-material/other 0.8% 0.0% 0.0% 0.0% 0.0%
Subtotal 6.8% 0.0% 0.0% 0.0% 0.0%
Textiles Clothing/textiles 1.4% 0.0% 0.0% 0.0% 0.0%
Multi-material/other 0.7% 0.0% 0.0% 0.0% 0.0%
Subtotal 2.1% 0.0% 0.0% 0.0% 0.0%
Nappies and sanitary   6.5% 0.0% 0.0% 0.0% 0.0%
Rubble Concrete 0.4% 0.0% 0.0% 0.0% 0.0%
Other 1.5% 17.8% 22.9% 27.9% 11.5%
Subtotal 1.9% 17.8% 22.9% 27.9% 11.5%
Timber Unpainted and untreated 0.2% 0.0% 0.0% 0.0% 0.0%
Fabricated 0.2% 0.0% 0.0% 0.0% 0.0%
Multi-material/other 0.2% 0.0% 0.0% 0.0% 0.0%
Subtotal 0.5% 0.0% 0.0% 0.0% 0.0%
Rubber   0.1% 0.0% 0.0% 0.0% 0.0%
Potentially hazardous   1.0% 65.6% 42.2% 42.0% 40.4%
  Total 100% 100% 100% 100% 100%

Note: Totals/subtotals may not sum exactly due to rounding.


25. Composition data based on Opus International Consultants Ltd, Dunedin City Council Green Island Landfill Solid Waste Analysis Protocol Baseline Survey – Survey 8, 2005, p. 11.  The proportions of textiles and potentially hazardous materials in the results were anomalously high compared to all other surveys of this kind undertaken by Waste Not Consulting, and so have been reduced to normal levels and the other percentages raised proportionally.