|
Environmental Factors and Health Appendix 3
|
Pollutant |
Average time |
EU limit values µg/m3 |
Conditions of EU limit value |
Sulphur dioxide (SO2) |
10 minutes |
|
No EU threshold but required to measure and report at selected stations. |
|
1 hour |
350 |
Not to be exceeded more than 24 times per calendar year (99.7 percentile). 43% margin of tolerance allowed in 2000, lowering in annual steps until 2005 when full compliance is required. |
|
24 hours |
125 |
Not to be exceeded more than 3 times per calendar year (99.2 percentile) |
Nitrogen dioxide (NO2) |
1 hour |
200 |
Not to be exceeded more than 18 times per calendar year (99.8 percentile). 50% margin of tolerance allowed in 2000, lowering in annual steps until 2010 when full compliance is required. |
|
1 year |
40 |
50% margin of tolerance allowed in 2000, lowering in annual steps until 2010 when full compliance is required. |
PM10 |
24 hours |
50 |
Not to be exceeded more than 35 times per calendar year (90.4 percentile, 2005), decreasing to 7 times per calendar year (98 percentile, 2010). 50% margin of tolerance allowed in 2000, lowering in annual steps until 2005. |
|
1 year |
40 (2005) |
50% margin of tolerance allowed in 2000, lowering in annual steps until 2010. |
PM2.5 |
24 hours |
|
No EU threshold but required to be measured and reported at representative locations. [Proposed USA limit value: 65 µg/m3.] |
|
1 year |
|
No EU threshold. [Proposed USA limit value: 15 µg/m3.] |
Lead (Pb) |
1 year |
0.5 |
100% margin of tolerance allowed in 2000, lowering in annual steps until 2005. |
Ozone (O3) |
8 hour average |
110 |
Existing EU threshold (1992) for reporting purposes. Calculated as non-overlapping 8-hour averages. |
|
8 hour average, highest each day |
120 |
Proposed: Not to be exceeded by more than 20 days per calendar year averaged over 3 years (94.5 percentile). Long-term objective: highest 8-hour average within a calendar year. |
Carbon monoxide (CO) |
8 hours |
10,000 |
Proposed: 50% margin of tolerance allowed in 2000, lowering in annual steps until 2005 when full compliance is required. |
Benzene |
1 year |
5 |
Proposed: 100% margin of tolerance allowed until 1 Jan 2003, lowering in annual steps until 1 Jan 2010 when full compliance is required. |