legislation-obligation

Substance Regulatory Obligations

OBL

Ozone

EC number: 233-069-2

CAS number: 10028-15-6

Last updated: 18/12/2023
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ECHA Legislation Regulatory Obligations

Regulatory obligations may exist for this substance under the legislations under ECHA’s remit or for which ECHA has delegated tasks (i.e. REACH, CLP, BPR, PIC, CAD / CMD, WFD, and POPs). Please check the substance Infocard.

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Ambient Air Quality Directive

Annexes II VII XI XII XIII XIV - Assessment Thresholds & Limit Values

This list contains the Limit, Critical, Target and Long-term Values on ambient air for protection of human health and vegetation. It also contains the Alert, Information and Upper and Lower Assessment thresholds for sulphur dioxide, nitrogen dioxide, benzene, carbon monoxide, lead, PM2.5, PM10 and ozone.

Name CAS Critical Level Alert Threshold Upper assessment threshold Lower assessment threshold Average limit Average sampling duration Tolerance margin Exposure conc. Obligation Information Threshold Long-term objective Objective Target value Annex Qualifier Notes  
Ozone
10028-15-6
8 h
120 µg/m3
Protection of Human Health
120 µg/m3
VII (Section B),VII (Section C)
10 '8 h' in Averaging period for Limit and Target values refers to 'maximum daily 8 hour mean'. The concentration will be selected by examining 8 hour running averages, calculated from hourly data and updated each hour. Each 8 hour average so calculated will be assigned to the day on which it ends i.e. the first period for any one day will be the period from 17:00 on the previous day to 1:00 on that day; the last calculation period for any one day will be the period from 16:00 to 24:00 on that day
13 The required proportion of valid data refers to the percentage of the hourly running eight hour averages
16 Compliance with target values will be assessed as of 1.1.2010. That is, 2010 will be the first year the data for which is used in calculating compliance over the following three or five years, as appropriate
17 Target value not to be exceeded on more than 25 days per calendar year averaged over three years
18 If the three or five year averages cannot be determined on the basis of a full and consecutive set of annual data, the minimum annual data required for checking compliance with the target values will be as follows: (a) for the target value for the protection of human health: valid data for one year, (b) for the target value for the protection of vegetation: valid data for three years.
19 '8 h' in Averaging period for Long-term objectives refers to 'maximum daily eight hour mean within a calendar year'
20 The date by which the longterm objective should be met is not defined
 Details
Ozone
10028-15-6
240 µg/m3
1 h
180 µg/m3
Protection of Human Health
XII (Section B)
28 For the implementation of Article 24, the exceedance of the Alert threshold is to be measured or predicted for three consecutive hours.
 Details
Ozone
10028-15-6
3 Months
6000 µg/m3
Protection of vegetation
18000 µg/m3
VII (Section B),VII (Section C)
16 Compliance with target values will be assessed as of 1.1.2010. That is, 2010 will be the first year the data for which is used in calculating compliance over the following three or five years, as appropriate
18 If the three or five year averages cannot be determined on the basis of a full and consecutive set of annual data, the minimum annual data required for checking compliance with the target values will be as follows: (a) for the target value for the protection of human health: valid data for one year, (b) for the target value for the protection of vegetation: valid data for three years.
20 The date by which the longterm objective should be met is not defined
21 The longterm objective is expressed as the AOT40 (expressed in (µg/m3) . hours) AOT40 means the sum of the difference between hourly concentrations greater than 80 µg/m3 (= 40 parts per billion) and 80 µg/m3 over a given period using only the one-hour values measured between 8.00 and 20.00 Central European Time (CET) each day
24 The averaging period referes to May to July
 Details