Emissions of volatile organic compounds
| NMVOC | Benzene | Benz(a)-pyrene | 1,3-Butadiene | Dioxins | |
|---|---|---|---|---|---|
| *Lower limits for hotspots in tonnes/km2/year; †children migrating >1.0 km and with one address within 1.0 km of nearest hotspot and the other address outside 1.0 km. | |||||
| Hotspot criteria | 28* | 3* | 0.03* | 0.25* | 0.1 grams |
| Number of hotspots | 53297 | 59811 | 150617 | 11949 | 1078 |
| Number of children† | 1409 | 1308 | 580 | 2775 | 670 |
| Outward migration | 951 | 889 | 381 | 2194 | 461 |
| Inward migration | 458 | 419 | 199 | 581 | 209 |
| Ratio out/in | 2.076 | 2.122 | 1.915 | 3.776 | 2.206 |