Air quality in the Canterbury region: Timaru Airshed
Timaru Airshed
Timaru Airshed PM10 Exceedences
Note: The NES targets for this airshed are provisional.
| Year | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 |
|---|---|---|---|---|---|---|
| Method | TEOM & FDMS | TEOM FDMS | TEOM FDMS | TEOM FDMS | TEOM FDMS | TEOM FDMS |
| Valid data (%) | 99% | 96% | 100% | 98% | 99% | 97% |
| No of exceedences PM10 | 46 | 36 | 36 | 39 | 38 | 49 |
| 2nd highest 24 hour average | 107 | 130 | 99 | 96 | 124 | 124 |
| Highest 24-hr average | 109 | 190 | 128 | 109 | 134 | 148 |
| Annual average | 27 | 26 | 23 | 28 | 29 | 32 |
Source: Environment Canterbury
(1) The Timaru airshed has multiple monitoring sites. The annual averages reported here are based on the Anzac Park monitoring site only. Other results are a consolidation of the multiple sites.
(2) In 2009, one exceedance occurred because of transboundary pollution from the Australian dust storms. This exceedance has not been included in this table.
Last updated: 2 August 2011
