LegalizeThe Air Quality Limit Values Regulations 2003
The reference method for the sampling and measurement of PM₁₀ will be that described in EN 12341 ‘Air Quality—Field Test Procedure to Demonstrate Reference Equivalence of Sampling Methods for the PM₁₀ fraction of particulate matter’ . The measurement principle is based on the collection on a filter of the PM₁₀ fraction of ambient particulate matter and the gravimetric mass determination.
The reference method for the measurement of benzene will be a pumped sampling method on a sorbent cartridge followed by gas chromatographic determination.
The reference method for the measurement of carbon monoxide will be a non-dispersive infra-red spectrometric (NDIR) method.
The reference method for analysis of ozone shall be the UV photometric method (ISO FDIS 13964 or equivalent).
The reference method for calibration of ozone instruments shall be the Reference UV photometer method (ISO FDIS 13964, VDI 2468, B1.6 or equivalent).
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 | |
|---|---|---|---|---|---|
| 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—monthly 1 hour maximum ozone | —for each day with any exceedance: date, total hours of exceedance, maximum 1 hour ozone and related NO₂ values, when required |
| 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 (b) | —for each day with any exceedance: date, 8 hours maximum (b) |
| Vegetation protection | Suburban, rural, rural background | AOT40 (a) =6,000µg/m³.h | 1 hour, accumulated from May to June | Value | |
| Forest protection | Suburban, rural, rural background | AOT40 (a) =20,000µg/m³.h | 1 hour, accumulated from April to September | Value | |
| Materials | Any | 40 µg/m³ | 1 year | Value |
a
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b
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In this Part, percentiles are to be calculated using the method specified in Council Decision 97/101/EC establishing a reciprocal exchange of information and data from networks and individual stations measuring ambient air pollution within Member States .
The following criteria are to be used for checking validity when aggregating data and calculating statistical parameters—
| Parameter | Required proportion of valid data |
|---|---|
| 1 hour values | 75% (45 minutes) |
| 8 hour values | 75% of values (6 hours) |
| Maximum daily 8 hours mean from hourly running 8 hours averages | 75% of the hourly running 8 hour averages(8 hours per day) |
| AOT40 | 90% of the 1 hour values over the time period defined for calculating the AOT40 value (a) |
| Annual mean | 75% of the 1 hour values over summer (April to September) and winter (January to March, October to December) seasons separately |
| Number of exceedances and maximum values per month | 90% of the daily maximum 8 hours mean value (27 available daily values per month) 90% of the 1 hour values between 8:00 and 20:00 Central European Time |
| Number of exceedances and maximum values per year | Five out of six summer months over the summer season (April to September) |
a
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Editorial notes
[^key-8608e7d1e79806db0ab75aadef4a4e5f]: Regulations revoked (15.2.2007) by The Air Quality Standards Regulations 2007 (S.I. 2007/64), regs. 1(1), 32(1)(a)
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