Year Adjustment Factors

Local authorities may need to estimate background concentrations in specific years, or project forward results from air quality monitoring surveys. A number of different approaches can be used, depending upon whether the site is background or roadside. Full details of these approaches are provided in para 7.70-7.75 of Technical Guidance LAQM.TG(16), whilst the following provides links to the accompanying datasets/tools required to undertake the calculations referenced in this section of the Technical Guidance.

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