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The Air Quality Standards (Scotland) Regulations 2007

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1.  The following information on ozone concentrations shall be obtained and collated–

Type of stationLevelAveraging/accumulation timeProvisional data for each month from April to SeptemberReport for each year
(1)

Maximum daily 8-hour mean.

(2)

In this table, “AOT40” has the same meaning as in paragraph 3(d) of Part 4 of Schedule 1.

Information thresholdAny180μg/m31 hourFor each day with any exceedance: date, total hours of, exceedance, maximum 1 hour ozone and related NO2 values when required and monthly 1 hour maximum ozoneFor each day with any exceedance: date, total hours of exceedance, maximum 1 hour ozone and related NO2 values, when required
Alert thresholdAny240μg/m31 hourFor each day with any exceedance: date, total hours of exceedance, maximum 1 hour ozone and related NO2 values, when requiredFor each day with any exceedance: date, total hours of exceedance, maximum 1 hour ozone and related NO2 values, when required
Health protectionAny120μg/m38 hoursFor each day with any exceedance: date, 8 hours maximum(1)For each day with any exceedance: date, 8 hours maximum(1)
Vegetation protectionSuburban, rural, rural backgroundAOT40(2) = 6,000 μg/m3.h1 hour, accumulated from May to JuneValue
Forest protectionSuburban, rural, rural backgroundAOT40(2) = 20,000μg/m3.h1 hour, accumulated from April to SeptemberValue
MaterialsAny40 μg/m31 yearValue

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