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The Air Quality Standards Regulations 2007
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PART 1Information to be submitted to the Commission
1. The following information on ozone concentrations shall be obtained and collated—
| Type of station | Level | Averaging/accumulation time | Provisional data for each month from April to September | Report for each year | |
|---|---|---|---|---|---|
(1) Maximum daily 8-hour mean. | |||||
(2) In this table, “AOT40” has the same meaning as in paragraph 2(d) of Part 4 of Schedule 1. | |||||
| Information threshold | Any | 180μg/m3 | 1 hour | For each day with any exceedance: date, total hours of, exceedance, maximum 1 hour ozone and related NO2 values when required; | For each day with any exceedance: date, total hours of exceedance, maximum 1 hour ozone and related NO2 values, when required |
| monthly 1 hour maximum ozone | |||||
| Alert threshold | Any | 240μg/m3 | 1 hour | For each day with any exceedance: date, total hours of exceedance, maximum 1 hour ozone and related NO2 values, when required | For each day with any exceedance: date, total hours of exceedance, maximum 1 hour ozone and related NO2 values, when required |
| Health protection | Any | 120μg/m3 | 8 hours | For each day with any exceedance: date, 8 hours maximum(1) | For each day with any exceedance: date, 8 hours maximum(1) |
| Vegetation protection | Suburban, rural, rural background | AOT40(2) = 6,000 μg/m3.h | 1 hour, accumulated from May to June | Value | |
| Forest protection | Suburban, rural, rural background | AOT40(2) = 20,000μg/m3.h | 1 hour, accumulated from April to September | Value | |
| Materials | Any | 40 μg/m3 | 1 year | Value | |
2. The Secretary of State shall also ensure that the following information is collated—
(a)for ozone, nitrogen dioxide, oxides of nitrogen and the sums of ozone and nitrogen dioxide (added as parts per billion and expressed in μg/m³ ozone) the maximum, 99.9th, 98th and 50th percentiles and annual average and number of valid data from hourly series; and
(b)the maximum, 98th and 50th percentile and annual average from a series of daily 8-hour ozone maxima.
3. Data compiled in monthly reports shall be considered provisional and shall be updated where necessary in subsequent submissions.
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