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ILCD Handbook: Framework and requirements for LCIA models and indicators First edition - Exposure model - Potency or dose-response model. Coverage of the impacts in the modelling from midpoint to endpoint is complete. The table below presents the general and specific criteria for eutrophication, identifying the minimum score to be met (threshold value) and the most relevant criteria for the impact category (importance). Table 4-6 General and specific criteria for eutrophication with threshold value and importance. Introduction Completeness of scope Environmental relevance Eutrophication Check the following: Overall evaluation • Timeframe, discounting, etc. • Marginal (M) or Average (A) defined, if not described (ND) • Total number of individual substances covered by specific provided characterisation factors • The impact indicator covers the majority of impact mechanisms and relevant elementary flows for the AoP Human Health • The impact indicator covers the majority of impact mechanisms and relevant elementary flows for the AoP Natural Environment • The impact indicator covers the majority of impact mechanisms and relevant elementary flows for the AoP Natural Resources • The midpoint indicator is chosen in a way that all LCI are appropriately aggregated as early as possible in the cause effect chain • The characterisation model is adaptable to spatial and temporal explicit evaluation • Global geographical validity preferable, separate validity for Europe beneficial • The method is compatible with, or developed specifically for, the comparative assessment scope of LCA (e.g. factors do not include security factors/precautionary principle) • When empirical data is used, double counting is avoided Threshold (Minimum score) B H B H B H • Fate and transport is considered B H • Advection out of a region is not considered a final loss • Influential fate processes are considered For aquatic systems: denitrification, precipitation and sedimentation of P For terrestrial systems: oxidation, deposition Importance (H-N) 4 Requirements for specific impact categories 64
ILCD Handbook: Framework and requirements for LCIA models and indicators First edition Scientific robustness & Certainty Documentation & Transparency & Reproducibility Eutrophication Check the following: Overall evaluation Scientific robustness Certainty Overall evaluation • For damages on ecosystems, a fate sensitivity factor discriminating between sensitive and insensitive recipients is included • For aquatic systems according to their sensitivity to eutrophication and oxygen depletion and limiting nutrient (N for marine, P for freshwater) • For terrestrial systems according to the sensitivity to eutrophication (critical load, N) • Magnitude of exceedance for exposure above critical level is considered • Potency or dose-response is included Threshold (Minimum score) • Distinction of individual N- and P-compounds C H • The critical part of the model including the input data have been peer reviewed (journal, panel, book, etc.) • The model reflects the latest knowledge for the cause-effect chain (the critical links are covered) Fate and transport model • The model reflects the latest knowledge for the cause-effect chain (the critical links are covered) Exposure model • The model reflects the latest knowledge for the cause-effect chain (the critical links are covered) Potency or dose-response model • The coverage of the impacts in the modelling from midpoint to endpoint is complete • The model including the underlying data have a good potential for being consistently improved and further developed including regarding geographical/emission situation and temporal differentiation • Indicators can be confirmed and verified against monitoring data, if available • Uncertainty estimates of the indicators are provided, justified and reported in statistical terms • Scenario and model uncertainty are taken into account • The category indicator and characterisation models are science based • The model documentation is published and easily accessible (incl. description of the mechanism, the model, temporal and spatial scale, etc.)? • The set of characterization factors/models is published and easily accessible • The input data are published and easily accessible • The characterization model is published and easily accessible Importance (H-N) 4 Requirements for specific impact categories 65 H C H C B H H
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