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Overall environmental effect

This presentation by Neil Iles, PPC Compliance Officer, outlines how we evaluate the cumulative impact of measured and modeled emissions, focusing on air quality standards. We discuss emission monitoring, dispersion modeling, and how predicted annual mean PM10 concentrations were estimated for Cemex Rugby sources in 2002. The presentation compares ground-level concentrations with EU and UK Environmental Quality Standards (EQS/UK QS) and Environmental Assessment Levels (EAL), providing insights on pollutant levels, long-term exposure, and the use of Environmental Quotients for assessing total impact from different substances.

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Overall environmental effect

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  1. Overall environmental effect Neil Iles PPC Compliance Officer 26th January 2012

  2. Overview • Already covered • Emission monitoring • Emission testing • Dispersion modelling This presentation covers how we evaluate the overall effect of all the emissions that we’ve measured, modelled

  3. Map of ground level concentrations Example: Predicted annual mean PM10 concentrations for all Cemex Rugby sources for 2002 (µg/m3) (from Cemex Tyre Trial Report 2006)

  4. How do we assess this information ?

  5. Air Quality Standards • Compare ground level concentrations with – • EU Environmental Quality Standards (EQS) • UK Environmental Quality Standards (UK QS) • Environmental Assessment Levels (EAL)

  6. Environmental Quality Standards • EU standards (EQS) • set by European Legislation • EQS only exist for limited number of substances eg NOx, SOx, PMs • UK QS’s • also legally binding but lower status • cover similar materials • some differences in conditions in UK QS and EQS • Environment Assessment Levels • have no statutory basis • EALs are standard for ‘harm’ and are based on a variety of published data, mostly health and safety occupational health limits • EALs have recently been reviewed and are under consultation

  7. Assessing emissions - considerations • Pollutant levels from the installation (PC) • Background pollutant levels (BG) • Long-term exposure • Total concentration (PEC) = PC + BG • Short-term exposure • Total concentration (PEC) = PC + 2 x BG • Where PEC > EQS or EAL - unlikely to be acceptable PEC = Predicted Environmental Concentration

  8. Considering multiple substancesUse of Environmental Quotients (EQ) • Calculate EQ for each substance EQ = PC/EAL or PC/EQS 2. Add EQs for different substances to get a measure of total impact i.e. EQ total = EQ1 + EQ2 +EQ3 + …….. • Not completely accurate but useful tool for comparing • Used by CEMEX for comparing Alternative Fuel trials

  9. EQ = PC / EAL  PC  EAL  Table from 65% Climafuel Report

  10. Further information Horizontal Guidance Note H1 – Annex (f) for - • Background information • Assessment techniques • Details of EQSs, EALs and POCPs* * POCP = Photochemical Ozone Creation Potential

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