- Latest available (Revised) - English
- Latest available (Revised) - Welsh
- Original (As made) - English
- Original (As made) - Welsh
This is the original version (as it was originally made).
The following upper and lower assessment thresholds will apply:
Health protection | Ecosystem protection | |
---|---|---|
Upper assessment threshold | 60% of 24-hour limit value (75 μg/m3, not to be exceeded more than 3 times in any calendar year) | 60% of winter limit value (12 μg/m3) |
Lower assessment threshold | 40% of 24-hour limit value (50 μg/m3), not to be exceeded more than 3 times in any calendar year) | 40% of winter limit value (8 μg/m3) |
Hourly limit value for the protection of human health (NO2) | Annual limit value for the protection of human health (NO2) | Annual limit value for the protection of vegetation (NOx) | |
---|---|---|---|
Upper assessment value | 70% of limit value (140 μg/m3, not to be exceeded more than 18 times in any calendar year) | 80% of limit value (32 μg/m3) | 80% of limit value (24 μg/m3) |
Lower assessment value | 50% of limit value (100 μg/m3, not to be exceeded more than 18 times in any calendar year). | 65% of limit value (26 μg/m3) | 65% of limit value (19.5 μg/m3) |
24-hour average | Annual average | |
---|---|---|
Upper assessment threshold | 60% of limit value (30 μg/m3, not to be exceeded more than seven times in any calendar year). | 70% of limit value (14 μg/m3) |
Lower assessment threshold | 40% of limit value (20 μg/m3, not to be exceeded more than seven times in any calendar year). | 50% of limit value (10 μg/m3) |
Annual average | |
---|---|
Upper assessment threshold | 70% of limit value (0.35 μg/m3) |
Lower assessment threshold | 50% of limit value (0.25 μg/m3) |
Annual average | |
---|---|
Upper assessment threshold | 70% of limit value (3.5 μg/m3) |
Lower assessment threshold | 40% of limit value (2 μg/m3) |
Eight-hour average | |
---|---|
Upper assessment threshold | 70% of limit value (7 mg/m3) |
Lower assessment threshold | 50% of limit value (5 mg/m3) |
The upper and lower assessment thresholds for PM10 are based on the indicative limit values for 1 January 2010, which will be reviewed in the light of further information on health and environmental effects, technical feasibility and experience in the application of the existing “Stage 1” limit values. See Article 10 of Directive 99/30/EC.
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