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Figure 2.1

Timetable for Review and Assessment

Date

Progress Report*

Updating & Screening Assessment

consultation

Detailed assessment

Consultation

Declaration

Further Assessment

Consultation

Action Plan

2003

2004

2005

  • *

    A Progress Report is not required if a Detailed Assessment is being carried out.

    • 2.4

      LAQM Guidance and Methodologies

A pollutant specific methodology has been devised by Defra for Review and Assessment of air quality. To assess any significant changes to emissions between the conclusions of the Phase 1 reports and the U&SA, there are a number of screening tools that can be applied. The guidance cites several methodologies that relate to assessing errors in monitoring and modelling, making predictions of future pollutant concentrations and the relationship between NOx and NO2 and primary, secondary and coarse PM10.

These methodologies include nomograms and models that will be used in order to make an assessment of emissions from road traffic and industrial sources against the AQOs. At all times relevance should be given to the extent of public exposure in reference to the AQOs.

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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