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Waste Solid Waste Audits for Ministry for the Environment Data Programme 2007/08 Online version
Solid Waste Audits forMinistry for the EnvironmentData Programme 2007/08
Silverstream Figure text descriptions
Fig S1.1 Waste flows at Silverstream Landfill
The diagram illustrates the four activity sources (i.e. C&D, ICI, landscaping and earthworks, and residential) that comprise both the waste being discharged at the transfer station and the general waste being discharged at the tip face. The combination of the transfer station waste, the general waste to tip face, the kerbside collections, cover material, and special wastes together make up the overall waste to landfill.
Fig S6.1 Composition of C&D waste to transfer station, 2007/08
| Primary category | 18-24 August | 23-29 November | 21-27 February | 17-23 May |
|---|---|---|---|---|
| Paper | 1.3% | 3% | 1.4% | 2% |
| Plastics | 3% | 2% | 2% | 3% |
| Putrescibles | 4% | 5% | 3% | 3% |
| Ferrous metals | 4% | 4% | 7% | 4% |
| Non-ferrous metals | 0.7% | 0.0% | 0.2% | 0.3% |
| Glass | 0.8% | 1.2% | 0.9% | 2% |
| Textiles | 4% | 3% | 2% | 2% |
| Nappies and sanitary | 0.0% | 0.0% | 0.0% | 0.1% |
| Rubble | 37% | 33% | 26% | 22% |
| Timber | 45% | 49% | 57% | 62% |
| Rubber | 0.1% | 0.0% | 0.0% | 0.0% |
| Potentially hazardous | 0.2% | 0.3% | 0.2% | 0.4% |
Return to the point in the document where this figure is located.
Fig S6.2 Composition of ICI waste to transfer station, 2007/08
| Primary category | 18-24 August | 23-29 November | 21-27 February | 17-23 May |
|---|---|---|---|---|
| Paper | 14% | 9% | 9% | 5% |
| Plastics | 14% | 8% | 8% | 7% |
| Putrescibles | 11% | 8% | 8% | 5% |
| Ferrous metals | 8% | 6% | 5% | 3% |
| Non-ferrous metals | 0.5% | 2% | 1.1% | 0.4% |
| Glass | 4% | 7% | 8% | 2% |
| Textiles | 5% | 11% | 12% | 4% |
| Nappies and sanitary | 0.8% | 1.1% | 1.4% | 0.7% |
| Rubble | 2% | 6% | 4% | 1.0% |
| Timber | 16% | 14% | 11% | 15% |
| Rubber | 24% | 30% | 31% | 57% |
| Potentially hazardous | 3% | 0.5% | 2% | 0.2% |
Return to the point in the document where this figure is located.
Fig S6.3 Composition of landscaping and earthworks waste to transfer station, 2007/08
| Primary category | 18-24 August | 23-29 November | 21-27 February | 17-23 May |
|---|---|---|---|---|
| Paper | 0.3% | 0.8% | 0.3% | 0.4% |
| Plastics | 0.6% | 0.7% | 0.5% | 0.5% |
| Putrescibles | 79% | 84% | 84% | 84% |
| Ferrous metals | 0.6% | 0.7% | 0.6% | 0.5% |
| Non-ferrous metals | 0.0% | 0.0% | 0.0% | 0.0% |
| Glass | 0.0% | 0.3% | 0.2% | 0.3% |
| Textiles | 0.2% | 0.7% | 0.5% | 0.4% |
| Nappies and sanitary | 0.0% | 0.1% | 0.1% | 0.2% |
| Rubble | 19% | 10% | 10% | 10% |
| Timber | 0.9% | 3% | 3% | 4% |
| Rubber | 0.1% | 0.1% | 0.0% | 0.0% |
| Potentially hazardous | 0.3% | 0.0% | 0.0% | 0.0% |
Return to the point in the document where this figure is located.
Fig S6.4 Composition of residential waste to transfer station, 2007/08
| Primary category | 18-24 August | 23-29 November | 21-27 February | 17-23 May |
|---|---|---|---|---|
| Paper | 8% | 10% | 10% | 9% |
| Plastics | 10% | 10% | 10% | 9% |
| Putrescibles | 19% | 23% | 20% | 23% |
| Ferrous metals | 13% | 13% | 14% | 11% |
| Non-ferrous metals | 0.4% | 0.6% | 0.7% | 0.6% |
| Glass | 3% | 4% | 3% | 3% |
| Textiles | 10% | 10% | 9% | 12% |
| Nappies and sanitary | 1.2% | 2% | 2% | 2% |
| Rubble | 7% | 3% | 5% | 4% |
| Timber | 28% | 22% | 26% | 24% |
| Rubber | 1.2% | 0.7% | 0.8% | 0.9% |
| Potentially hazardous | 0.7% | 0.7% | 0.8% | 0.6% |
Return to the point in the document where this figure is located.
Fig S6.5 Tonnage of activity sources of general waste to transfer station, 2007/08
| Primary category | 18-24 August | 23-29 November | 21-27 February | 17-23 May |
|---|---|---|---|---|
| Construction and Demolition | 76 | 55 | 83 | 43 |
| Industrial/Commercial/ Institutional | 45 | 32 | 41 | 42 |
| Landscaping and Earthworks | 132 | 201 | 235 | 145 |
| Residential | 165 | 178 | 208 | 126 |
| Total General Waste | 418 | 466 | 568 | 356 |
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Fig S6.6 Tonnage of general waste to transfer station by primary categories, 2007/08
| Primary category | 18-24 August | 23-29 November | 21-27 February | 17-23 May | Mean |
|---|---|---|---|---|---|
| Paper | 21 | 24 | 25 | 14 | 21 |
| Plastics | 25 | 23 | 26 | 16 | 23 |
| Putrescibles | 143 | 214 | 245 | 155 | 189 |
| Ferrous metals | 28 | 28 | 37 | 17 | 28 |
| Non-ferrous metals | 1.0 | 2 | 2 | 1.0 | 2 |
| Glass | 6 | 10 | 11 | 6 | 8 |
| Textiles | 22 | 25 | 27 | 18 | 23 |
| Nappies and sanitary | 2 | 5 | 5 | 4 | 4 |
| Rubble | 65 | 46 | 58 | 29 | 50 |
| Timber | 89 | 76 | 115 | 69 | 87 |
| Rubber | 13 | 11 | 14 | 25 | 16 |
| Potentially hazardous | 3 | 2 | 2 | 1.0 | 2 |
Return to the point in the document where this figure is located.
Fig S6.7 Primary composition of general waste to transfer station, 2007/08
| Primary category | 18-24 August | 23-29 November | 21-27 February | 17-23 May |
|---|---|---|---|---|
| Paper | 5% | 5% | 5% | 4% |
| Plastics | 6% | 5% | 5% | 5% |
| Putrescibles | 34% | 46% | 43% | 44% |
| Ferrous metals | 7% | 6% | 7% | 5% |
| Non-ferrous metals | 0.3% | 0.4% | 0.4% | 0.3% |
| Glass | 2% | 2% | 2% | 2% |
| Textiles | 5% | 5% | 5% | 5% |
| Nappies and sanitary | 0.6% | 1.1% | 0.9% | 1.0% |
| Rubble | 16% | 10% | 10% | 8% |
| Timber | 21% | 16% | 20% | 20% |
| Rubber | 3% | 2% | 3% | 7% |
| Potentially hazardous | 0.7% | 0.4% | 0.4% | 0.3% |
Fig S6.8 Average primary composition of general waste to transfer station – 2008-08
| Primary category | % of total |
|---|---|
| Paper | 5% |
| Plastics | 5% |
| Putrescibles | 42% |
| Ferrous metals | 6% |
| Non-ferrous metals | 0.3% |
| Glass | 2% |
| Textiles | 5% |
| Nappies and sanitary | 0.9% |
| Rubble | 11% |
| Timber | 19% |
| Rubber | 3% |
| Potentially hazardous | 0.4% |
Return to the point in the document where this figure is located.
Fig S6.9 Composition of C&D waste to tip face, 2007/08
| Primary category | 18-24 August | 23-29 November | 21-27 February | 17-23 May |
|---|---|---|---|---|
| Paper | 4% | 4% | 3% | 5% |
| Plastics | 4% | 4% | 5% | 5% |
| Putrescibles | 1.0% | 3% | 8% | 4% |
| Ferrous metals | 7% | 8% | 7% | 3% |
| Non-ferrous metals | 0.2% | 0.1% | 0.2% | 0.1% |
| Glass | 2% | 1.4% | 1.0% | 0.4% |
| Textiles | 0.7% | 2% | 1.0% | 0.6% |
| Nappies and sanitary | 0.1% | 0.0% | 0.2% | 0.0% |
| Rubble | 23% | 14% | 34% | 21% |
| Timber | 57% | 63% | 41% | 55% |
| Rubber | 0.4% | 0.4% | 0.1% | 5% |
| Potentially hazardous | 0.7% | 0.4% | 0.5% | 0.1% |
Return to the point in the document where this figure is located.
Fig S6.10 Composition of ICI waste to tip face, 2007/08
| Primary category | 18-24 August | 23-29 November | 21-27 February | 17-23 May |
|---|---|---|---|---|
| Paper | 11% | 13% | 11% | 13% |
| Plastics | 21% | 19% | 16% | 15% |
| Putrescibles | 21% | 24% | 22% | 25% |
| Ferrous metals | 6% | 6% | 5% | 5% |
| Non-ferrous metals | 1.2% | 0.7% | 0.7% | 0.8% |
| Glass | 7% | 8% | 16% | 6% |
| Textiles | 7% | 7% | 7% | 6% |
| Nappies and sanitary | 4% | 4% | 4% | 5% |
| Rubble | 4% | 3% | 2% | 3% |
| Timber | 13% | 12% | 14% | 17% |
| Rubber | 3% | 1.4% | 0.8% | 0.9% |
| Potentially hazardous | 3% | 2% | 2% | 4% |
Return to the point in the document where this figure is located.
Fig S6.11 Composition of landscaping and earthworks waste to tip face, 2007/08
| Primary category | 18-24 August | 23-29 November | 21-27 February | 17-23 May |
|---|---|---|---|---|
| Paper | 0.0% | 0.5% | 3% | 0.5% |
| Plastics | 0.1% | 2% | 1.3% | 0.5% |
| Putrescibles | 78% | 72% | 85% | 53% |
| Ferrous metals | 1.1% | 1.2% | 0.7% | 0.1% |
| Non-ferrous metals | 0.0% | 0.0% | 0.0% | 0.0% |
| Glass | 0.0% | 0.1% | 0.0% | 0.3% |
| Textiles | 0.4% | 0.4% | 0.7% | 0.1% |
| Nappies and sanitary | 0.0% | 0.0% | 0.1% | 0.1% |
| Rubble | 14% | 21% | 3% | 39% |
| Timber | 6% | 3% | 2% | 6% |
| Rubber | 0.0% | 0.0% | 4% | 0.0% |
| Potentially hazardous | 0.0% | 0.0% | 0.0% | 0.0% |
Return to the point in the document where this figure is located.
Fig S6.12 Composition of residential waste to tip face, 2007/08
| Primary category | 18-24 August | 23-29 November | 21-27 February | 17-23 May |
|---|---|---|---|---|
| Paper | 6% | 6% | 7% | 7% |
| Plastics | 12% | 9% | 12% | 11% |
| Putrescibles | 10% | 15% | 13% | 10% |
| Ferrous metals | 18% | 18% | 20% | 16% |
| Non-ferrous metals | 0.8% | 0.7% | 0.9% | 0.8% |
| Glass | 4% | 3% | 4% | 4% |
| Textiles | 12% | 12% | 12% | 12% |
| Nappies and sanitary | 0.8% | 0.2% | 0.7% | 0.0% |
| Rubble | 8% | 9% | 5% | 9% |
| Timber | 28% | 27% | 24% | 29% |
| Rubber | 0.7% | 0.7% | 0.8% | 1.0% |
| Potentially hazardous | 0.8% | 0.8% | 1.3% | 2% |
Return to the point in the document where this figure is located.
Fig S6.13 Tonnage of activity sources of general waste to tip face, 2007/08
| Primary category | 18-24 August | 23-29 November | 21-27 February | 17-23 May |
|---|---|---|---|---|
| Construction and Demolition | 90 | 89 | 22 | 66 |
| Industrial/Commercial/ Institutional | 847 | 668 | 698 | 583 |
| Landscaping and Earthworks | 16 | 42 | 34 | 59 |
| Residential | 23 | 37 | 48 | 34 |
| Total General Waste | 976 | 837 | 802 | 741 |
Return to the point in the document where this figure is located.
Fig S6.14 Tonnage of general waste to tip face by primary categories, 2007/08
| Primary category | 18-24 August | 23-29 November | 21-27 February | 17-23 May | Mean |
|---|---|---|---|---|---|
| Paper | 99 | 94 | 81 | 81 | 89 |
| Plastics | 192 | 137 | 122 | 96 | 137 |
| Putrescibles | 196 | 198 | 187 | 181 | 191 |
| Ferrous metals | 58 | 53 | 46 | 37 | 49 |
| Non-ferrous metals | 10 | 5 | 5 | 5 | 6 |
| Glass | 58 | 55 | 115 | 35 | 66 |
| Textiles | 58 | 50 | 54 | 40 | 51 |
| Nappies and sanitary | 31 | 26 | 27 | 27 | 28 |
| Rubble | 54 | 47 | 27 | 55 | 46 |
| Timber | 167 | 147 | 117 | 150 | 145 |
| Rubber | 23 | 10 | 7 | 9 | 12 |
| Potentially hazardous | 28 | 14 | 13 | 23 | 20 |
Return to the point in the document where this figure is located.
Fig S6.15 Primary composition of general waste to tip face, 2007/08
| Primary category | 18-24 August | 23-29 November | 21-27 February | 17-23 May |
|---|---|---|---|---|
| Paper | 10% | 11% | 10% | 11% |
| Plastics | 20% | 16% | 15% | 13% |
| Putrescibles | 20% | 24% | 23% | 24% |
| Ferrous metals | 6% | 6% | 6% | 5% |
| Non-ferrous metals | 1.1% | 0.6% | 0.7% | 0.7% |
| Glass | 6% | 7% | 14% | 5% |
| Textiles | 6% | 6% | 7% | 5% |
| Nappies and sanitary | 3% | 3% | 3% | 4% |
| Rubble | 6% | 6% | 3% | 8% |
| Timber | 17% | 18% | 15% | 20% |
| Rubber | 2% | 1.2% | 0.9% | 1.2% |
| Potentially hazardous | 3% | 2% | 2% | 3% |
Return to the point in the document where this figure is located.
Fig S6.16 Average primary composition of general waste to tip face – 2008-08
| Primary category | % of total |
|---|---|
| Paper | 11% |
| Plastics | 16% |
| Putrescibles | 23% |
| Ferrous metals | 6% |
| Non-ferrous metals | 0.7% |
| Glass | 8% |
| Textiles | 6% |
| Nappies and sanitary | 3% |
| Rubble | 5% |
| Timber | 17% |
| Rubber | 1.5% |
| Potentially hazardous | 2% |
Return to the point in the document where this figure is located.
Fig S6.18 Tonnage of overall waste including cover material by primary categories, 2007/08
| Primary category | 6-12 August | 20-26 November | 12-18 February | 5-11 May | Mean |
|---|---|---|---|---|---|
| Paper | 177 | 181 | 166 | 146 | 168 |
| Plastics | 262 | 222 | 207 | 162 | 213 |
| Putrescibles | 528 | 723 | 732 | 603 | 647 |
| Ferrous metals | 97 | 93 | 95 | 62 | 87 |
| Non-ferrous metals | 14 | 10 | 10 | 8 | 11 |
| Glass | 83 | 83 | 143 | 56 | 91 |
| Textiles | 89 | 84 | 90 | 64 | 82 |
| Nappies and sanitary | 72 | 74 | 73 | 67 | 72 |
| Rubble | 132 | 101 | 93 | 89 | 104 |
| Timber | 371 | 300 | 372 | 339 | 346 |
| Rubber | 36 | 21 | 22 | 34 | 28 |
| Potentially hazardous | 498 | 354 | 3,010 | 477 | 1085 |
Return to the point in the document where this figure is located.
Fig S6.19 Primary composition of overall waste including cover material, 2007/08
| Primary category | 6-12 August | 20-26 November | 12-18 February | 5-11 May |
|---|---|---|---|---|
| Paper | 8% | 8% | 3% | 7% |
| Plastics | 11% | 10% | 4% | 8% |
| Putrescibles | 22% | 32% | 15% | 29% |
| Ferrous metals | 4% | 4% | 2% | 3% |
| Non-ferrous metals | 0.6% | 0.4% | 0.2% | 0.4% |
| Glass | 4% | 4% | 3% | 3% |
| Textiles | 4% | 4% | 2% | 3% |
| Nappies and sanitary | 3% | 3% | 1.4% | 3% |
| Rubble | 6% | 5% | 2% | 4% |
| Timber | 16% | 13% | 7% | 16% |
| Rubber | 2% | 0.9% | 0.4% | 2% |
| Potentially hazardous | 21% | 16% | 60% | 23% |
Return to the point in the document where this figure is located.
Fig S6.20 Average primary composition of overall waste including cover material – 2008-08
| Primary category | % of total |
|---|---|
| Paper | 6% |
| Plastics | 7% |
| Putrescibles | 22% |
| Ferrous metals | 3% |
| Non-ferrous metals | 0.4% |
| Glass | 3% |
| Textiles | 3% |
| Nappies and sanitary | 2.4% |
| Rubble | 4% |
| Timber | 12% |
| Rubber | 1.0% |
| Potentially hazardous | 37% |
Return to the point in the document where this figure is located.
Fig S6.22 Tonnage of overall waste excluding cover material by primary categories, 2007/08
| Primary category | 6-12 August | 20-26 November | 12-18 February | 5-11 May | Mean |
|---|---|---|---|---|---|
| Paper | 177 | 181 | 166 | 146 | 168 |
| Plastics | 262 | 222 | 207 | 162 | 213 |
| Putrescibles | 528 | 723 | 732 | 603 | 647 |
| Ferrous metals | 97 | 93 | 95 | 62 | 87 |
| Non-ferrous metals | 14 | 10 | 10 | 8 | 11 |
| Glass | 83 | 83 | 143 | 56 | 91 |
| Textiles | 89 | 84 | 90 | 64 | 82 |
| Nappies and sanitary | 72 | 74 | 73 | 67 | 72 |
| Rubble | 132 | 101 | 93 | 89 | 104 |
| Timber | 260 | 225 | 234 | 213 | 233 |
| Rubber | 36 | 21 | 22 | 34 | 28 |
| Potentially hazardous | 498 | 354 | 3,010 | 477 | 1085 |
Return to the point in the document where this figure is located.
Fig S6.23 Primary composition of overall waste excluding cover material, 2007/08
| Primary category | 6-12 August | 20-26 November | 12-18 February | 5-11 May |
|---|---|---|---|---|
| Paper | 8% | 8% | 3% | 7% |
| Plastics | 12% | 10% | 4% | 8% |
| Putrescibles | 24% | 33% | 15% | 31% |
| Ferrous metals | 4% | 4% | 2% | 3% |
| Non-ferrous metals | 0.6% | 0.4% | 0.2% | 0.4% |
| Glass | 4% | 4% | 3% | 3% |
| Textiles | 4% | 4% | 2% | 3% |
| Nappies and sanitary | 3% | 3% | 2% | 3% |
| Rubble | 6% | 5% | 2% | 5% |
| Timber | 12% | 10% | 5% | 11% |
| Rubber | 2% | 1.0% | 0.5% | 2% |
| Potentially hazardous | 22% | 16% | 62% | 24% |
Return to the point in the document where this figure is located.
Fig S6.24 Average primary composition of overall waste excluding cover material – 2008-08
| Primary category | % of total |
|---|---|
| Paper | 6% |
| Plastics | 8% |
| Putrescibles | 23% |
| Ferrous metals | 3% |
| Non-ferrous metals | 0.4% |
| Glass | 3% |
| Textiles | 3% |
| Nappies and sanitary | 3% |
| Rubble | 4% |
| Timber | 8% |
| Rubber | 1.0% |
| Potentially hazardous | 38% |
