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10. Particulate Matter (PM10)

10.1

Conclusions of Phase 1 Review and Assessment

The Council’s Stage 1 Review and Assessment did not identify any industrial sources with potentially significant emissions of PM10. A number of roads were identified as exceeding the criteria for potentially significant traffic flows and further assessment at Stage 2 was recommended. A simple modelling assessment using the DMRB was undertaken at Stage 2. The assessment concluded the AQOs were unlikely to be exceeded. Further assessment of PM10 emissions, at Stage 3, was therefore not required.

10.2

Estimated and Monitored Data

Estimated annual mean background PM10 concentrations have been compiled and mapped for the UK on a 1 km x 1 km basis5. Details of background concentrations in West Berkshire during 2001, 2004 and 2010 have been collated and are detailed in Table 10.1 below.

Year

Maximum

Minimum

Mean

AQO

2001

21.40

17.50

18.81

-

2004

20.40

16.90

18.07

40

2010

18.40

15.60

16.59

20

Table 10.1

Estimated annual mean background concentrations - PM10

(µg/m3)

WBC currently does not monitor PM10 concentrations within it’s District. The nearest UK AURN site is located at Reading and represents an urban background location. The site is likely to recorded concentrations similar to those experienced within urbanised areas in West Berkshire. Concentrations of PM10 monitored during 2001 at the Reading site are shown in Table 10.2.

The monitored concentrations indicate that the number of periods above the maximum 24-hour mean criteria of 50 µg/m3 would not result in an exceedence of the objective. Annual mean concentrations in 2001 and estimated concentrations in 2005 are also below the objective level of 40 µg/m3. Estimated annual mean concentrations, in 2010, are also below the AQO target objective of 20 µg/m3. The PM10 concentrations monitored at Reading are comparable to the estimated background concentrations in West Berkshire, it is therefore considered unlikely that the AQOs would be exceeded in West Berkshire.

h:\projects\em-260\10000 projects\10151 aq w.berks r&a - phase 2\d design\reporting\10151 aq final u&sa.doc10151-01

May 2003

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