# Commission Implementing Decision of 12 December 2011 laying down rules for Directives 2004/107/EC and 2008/50/EC of the European Parliament and of the Council as regards the reciprocal exchange of information and reporting on ambient air quality (notified under document C(2011) 9068) (2011/850/EU), Division (B): Environmental objectives and reporting metrics

Extent: E+W+S+N.I.

LV: limit value, LVMT: Limit value plus margin of tolerance, TV: target value, LTO: long-term objective, INT: Information threshold, ALT: Alert threshold, CL: Critical level, NAT: Assessment of natural contribution, WSS: Assessment of winter-sanding and -salting, ERT: Exposure reduction target, ECO: Exposure concentration obligation.
No up-to-date data is to be made available.
Formula
Protection target
Environmental Objective type (Code)
Averaging period of assessments
Reporting metric of environmental objective
Numerical values of the environmental objective(allowed number of exceedances)
Pollutants for which up-to-date and validated data have to be reported
NO2
Health
LV
1 hour
Hours in exceedance in a calendar year
200 μg/m3 (18)
LVMT
LV
1 calendar year
Annual average
40 μg/m3
LVMT
ALT
1 hour
Three consecutive hours in exceedance (at locations representative of air quality over at least 100 km2 or an entire zone or agglomeration, which ever is smaller)
400 μg/m3
NOx
Vegetation
CL
1 calendar year
Annual average
30 μg/m3
PM10
Health
LV
1 day
Days in exceedance in a calendar year
50 μg/m3 (35)
Percentile of 90,4
LV
1 calendar year
Annual average
40 μg/m3
WSS
1 day
Deducted days in exceedance in a calendar year
n.a.
1 calendar year
Deduction of annual average
n.a.
NAT
1 day
Deducted days in exceedance in a calendar year
n.a.
1 calendar year
Deduction of the annual average
n.a.
PM2,5
Health
ECO
3 subsequent calendar years
Average Exposure Indicator (calculation see Directive 2008/50/EC)
20 μg/m3
ERT
in accordance with Annex XIV, Part B to Directive 2008/50/EC
TV
1 calendar year
Annual average
25 μg/m3
LV
LVMT
SO2
Health
LV
1 hour
Hours in exceedance in a calendar year
350 μg/m3 (24)
1 day
Days in exceedance in a calendar year
125 μg/m3 (3)
ALT
1 hour
Three consecutive hours in exceedance (at locations representative of air quality over at least 100 km2 or an entire zone or agglomeration, which ever is smaller)
500 μg/m3
NAT
1 hour
Deducted hours in exceedance in a calendar year
n.a.
1 day
Deducted days in exceedance in a calendar year
n.a.
Vegetation
CL
1 calendar year
Annual average
20 μg/m3
Winter
Average value over the winter months, i.e. 1 October year x-1 to 31 March year x
20 μg/m3
O3
Health
TV
Maximum daily eight-hour mean
Days when maximum daily eight-hour mean exceeded the target value averaged over 3 years
120 μg/m3 (25)
LTO
Maximum daily eight-hour mean
Days when maximum daily eight-hour mean exceeded the long term objective in 1 calendar year
120 μg/m3
INT
1 hour
Hours in exceedance in a calendar year
180 μg/m3
ALT
1 hour
Hours in exceedance in a calendar year
240 μg/m3
Vegetation
TV
1 May to 31 July
AOT40 (calculation see Dir. 2008/50/EC Annex VII)
18 000 μg/m3·h
LTO
1 May to 31 July
AOT40 (calculation see Dir. 2008/50/EC Annex VII)
6 000 μg/m3 ·h
CO
Health
LV
Maximum daily eight-hour mean
Days when maximum daily eight-hour mean exceeded the limit value
10 mg/m3
Pollutants for which only validated data have to be reported
Benzene
Health
LV
1 calendar year
Annual average
5 μg/m3
Lead
Health
LV
1 calendar year
Annual average
0,5 μg/m3
Cadmium
Health
TV
1 calendar year
Annual average
5 ng/m3
Arsenic
Health
TV
1 calendar year
Annual average
6 ng/m3
Nickel
Health
TV
1 calendar year
Annual average
20 ng/m 3
B(a)P
Health
TV
1 calendar year
Annual average
1 ng/m3

---
Source: https://www.legislation.gov.uk/eudn/2011/850/annex/I/division/B (the official version)
Page: https://openlegislation.uk/eu-decision-2011-850/annex-I/division-B
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.