3 - Implementation of FROGS In the French Evaluation Scheme

Transcription

1 3 - Implementation of FROGS In the French Evaluation Scheme FROGS (French Refinement Of Groundwater Scenarios) UIPP Training Paris, January 2015 UIPP Environmental Methodology Working Group DES PRODUITS UTILES - DES ENTREPRISES RESPONSABLES

2 FROGS Implementation in FR Evaluation Scheme Tiered Assessment Scheme - Tier 2 FROGS is to be used as a Tier 2 level when Tier 1 fails: (one or more FOCUS scenario failing) Protection goal consistent with FOCUS approach: 90 th percentile (combination of 80 th spatial and 80 th temporal percentiles) - Mitigation Measures Enables causal analysis of PECgw exceedances, allowing identification and proposal of mitigation measures Fits perfectly within zonal approach (1107/2009) national addendum

3 PECgw Calculation PEC gw Calculation 80 th temporal percentile PEC gw at bottom of profile (Scenario: AU x Soil(Crop), FOCUS Pearl 4.4.4) PEC gw = Σ over rotation mass leached /Σ over rotation water percolation Order scenarios by PEC gw (ascending) Calculate areal probability (cumulative area / total area) Select 80 th areal percentile PEC gw by averaging 4 th and 5 th highest average PEC value of each rotation Represents overall 90 th percentile PEC gw In analogy to FOCUS GW II (2009) Scenario Area (ha)

4 FROGS Output FROGS Output Files Output Files generated by FROGS: - Frogs Summary.txt: Detailed summary of inputs and results of each scenario - FROGS Cumulative Areal distribution - Test1.txt: Sorted concentrations and cumulative area (in kha and normalized) One file per substance - FROGS Cumulative Areal distribution - Test1.png: Graph of cumulative areal distribution, including the final PEC gw value

5 FROGS Output FROGS Output Files Output summary (*.txt) Areal PEC gw distribution (*.txt) RUNID 80th percentilcumulative A Cumulative Ar E

6 FROGS Output Cumulative aerial distribution (*.png) Processing of files using Excel template (provided with the tool) for further work: e.g. Identification of possible mitigation measures

7 Example: FOCUS Dummy C on Cereals Example: FOCUS Dummy C on Cereals - Input Data Dummy C Dummy C metabolite DT50 (days) ffm (-) Kom/Koc (L/kg) 100 / / 52 1/n (-) MW (g/mol) Crop uptake factor (-) Transformation E A (kj/mol) Application of 350 g/ha on cereals (winter wheat and winter barley) at emergence DES PRODUITS UTILES - DES ENTREPRISES RESPONSABLES

8 Example: FOCUS Dummy C on Cereals FOCUS Results - PECgw (80 th annual Percentile) FOCUS scenario Substance C PECgw (µg/l) Metabolite Sub_C Châteaudun < Hamburg < Jokioinen < Kremsmünster < Okehampton < Piacenza Porto < Sevilla < Thiva < Concentrations > 10 µg/l calculated for the metabolite in 2 scenarios Unacceptable risk for groundwater Tier 2 required DES PRODUITS UTILES - DES ENTREPRISES RESPONSABLES

9 Example: FOCUS Dummy C on Cereals FROGS Results: Dummy C Max µg/l DES PRODUITS UTILES - DES ENTREPRISES RESPONSABLES

10 Example: FOCUS Dummy C on Cereals FROGS Results: Metabolite C 80 th percentile < 10 µg/l risk acceptable, no mitigation needed DES PRODUITS UTILES - DES ENTREPRISES RESPONSABLES

11 Example: FOCUS Dummy C on Cereals Mitigation Measures 97.7% Mitigation measures possible for more complex cases: e.g. No application on soils with available water content (AWC) < 100 mm DES PRODUITS UTILES - DES ENTREPRISES RESPONSABLES

12 FROGS Implementation in FR Evaluation Scheme Thanks for your attention You can return to you pond!