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Testing Quality and Representativeness of Monitoring Data: Proposals and Results Presentation

This agenda item presents proposals for testing the quality and representativeness of monitoring data, along with the presentation of results. It also discusses the need for additional tests and adaptations to ensure robustness. The website provides factsheets and downloadable reports on concentration distribution and analysis data.

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Testing Quality and Representativeness of Monitoring Data: Proposals and Results Presentation

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  1. Agenda Item 4 : (a) – proposals for testing of quality and representativeness of monitoring data and for presentation of results B.FRIBOURG-BLANC, IOW (b.fribourg-blanc@oieau.fr)

  2. Data collection 2008 and 2009 • A strictly defined template with 22 mandatory fields • Flexibility introduced on 8 fields (longitude/latitude, LoD/LoQ, type of station, date of sampling, biota species, laboratory name) • A flexible data collection tool, and detailed documentation for non experts, to: • - minimise reporting burden: except on some validity checks, any fraction, any unit, any substance even with missing mandatory fields is accepted • - allow decentralised distribution of the tool (experienced by RO) • - maximise quantity of data collected • Interaction between data provider and consultant for correction of missing fields and coherence

  3. Factsheets: Summary information available • Factsheets: summary information for each of the 1151 substances • Website available at (last update 5/07/09): • http://www.priority.substances.wfd.oieau.fr/ Password: visitor • One factsheet per substance with summary statistics • By country • By Waterbody • Distribution of concentration by fraction and along DLs • Number of analyses by year and country • Map of all stations • For each factsheet a downloadable pdf file • A section “download” with • reports made of various selections of factsheets • zip file of all factsheets

  4. Factsheets: website extracts • Screens of Factsheets + download page

  5. Factsheets: website extracts • Screens of Factsheets + download page

  6. Factsheets: website extracts

  7. Factsheets: website extracts • Screens of Factsheets + download page

  8. Factsheets: website extracts • Screens of Factsheets + download page

  9. Factsheets: website extracts • Screens of Factsheets + download page

  10. Factsheets: website extracts • Screens of Factsheets + download page

  11. Testing quality and representativeness • Factsheets provide summary statistics + geographical distribution • PEC1 and PEC2 : Unique set of calculation steps applied • PEC1= 90th percentile of quantified values • PEC2= 90th percentile of all values • Available data: highly variable in quantity and quality • Substances ranking high : a need for high robustness  A need to introduce additional tests to check quality and representativeness

  12. Testing quality and representativeness • Distribution statistics and summary information proposed table:

  13. Testing quality and representativeness:distribution statistics • Heptachlor epoxide, fraction Invertebrates:

  14. Testing quality and representativeness:dataset representation

  15. Testing quality and representativeness • 2,2',4,4',5,5'-Hexachlorobiphenyl (PCB 153), fraction Sediment below 2mm:

  16. Testing quality and representativeness:dataset representation

  17. Testing quality and representativeness:

  18. Conclusions and perspectives • Any other suggested tests? • Need to consider fields of the template… • Need to define discard rules… • Two proposed tests for discussion: • Which (additional) discard criteria? • Adaptation needed?

  19. Thanks for your attention…

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