Review and Assessment Process
Blaby District Council has completed its review and assessment for all the pollutants except for Fine Particles (PM10).
Work continues, in accordance with government guidance, on this pollutant.
The Results of the Review and Assessment Process
This report predicted that the objectives for Benzene, 1,3-Butadiene, Lead, Carbon Monoxide and Sulphur Dioxide will be
achieved by the date indicated below.
Table 1.1 (below) is taken from the Review and Assessment Government guidance LAQM.TG (00) May 2000, and it lays out the
current Local Air Quality Management Objectives. These objectives relate to pollutant levels that should not be exceeded
after certain dates.
Certain areas of the district are however predicted to exceed the objective for Nitrogen Dioxide and are referred to as
Air Quality Management Areas.
These areas are listed below.
- A5460 Narborough Road South
- M1 corridor in Enderby and Narborough
- M1 corridor between Thorpe Astley and Kirby Muxloe including the extended areas
- St Johns, Enderby and Enderby Road, Whetstone
- Branting Hill
Further
information on air quality management areas.
Currently all five air quality management areas have been adopted, Blaby are currently reviewing the data collected from
recent monitoring at the A47, St Johns, Enderby Road and Branting Hill. This may lead to the un-declaration of some of the
areas, or alternatively may lead to more monitoring.
| Table 1.1: Objectives to be included in the Regulations 2000 for the purpose
of Local Air Quality Management. |
| Pollutant |
Air Quality Objective |
Date to be achieved by |
| |
Concentration1 |
Measured as |
|
| Benzene |
16.25 g/m3 (5ppb) |
running annual mean |
31.12.2003 |
| 1,3 Butadiene |
2.25 g/m3 (1ppb) |
running annual mean |
31.12.2003 |
| Carbon monoxide |
11.6 g/m3 (10ppb) |
running 8-hour mean |
31.12.2003 |
| Lead |
0.5 g/m3 0.25 g/m3
|
annual mean annual mean
|
31.04.2004 31.12.2008
|
| Nitrogen dioxide2 |
200 g/m3 (105ppb) not to be exceeded more than 18 times a year 40 g/m3
(21ppb)
|
1 hour mean annual mean
|
31.12.2005 31.12.2005
|
| Particles (PM10)3 |
50 g/m3 (gravimetric) not to be exceeded more than 35 times a year 40 g/m3
(gravimetric)
|
24 hour mean annual mean
|
31.12.2004 31.12.2004
|
| Sulphur dioxide |
350 g/m3 (132ppb) not to be exceeded more than 24 times a year 125 g/m3
(47ppb) not to be exceeded more than 3 times a year
266 g/m3 (100ppb) not to be exceeded more than 35 times a year
|
1 hour mean 24 hour mean
15 minute mean
|
31.12.2004 31.12.2004
31.12.2005
|
1Conversions of ppb to g/m3, and ppm to mg/m3at 20 deg C and 1013 mb
2The objectives for nitrogen dioxide are provisional
3Measured using the European gravimetric transfer standard or equivalent. The Government and the devolved administrations
see this new objective for particles as a staging post rather than a final outcome. Work has been set in hand to assess the
prospects of strengthening the new objective.
