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

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):
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

12. 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

13. Testing quality and representativeness
Distribution statistics and summary information proposed table:
Substance CAS
(1)
Substance name
Fraction
(2)
Total Nb analysis
(3)
Total Nb stations
Nb Member States
Nb RBD
PNEC
PEC1
PEC2
Nb analysis <=DLs (used in PEC2 calc.)
% analysis <=DLs for which LoD>2PNEC
Nb stations with quantified results (>DL)
(A)
Nb analysis >DL (used in PEC1 and PEC2 calc.)
(B)
Nb MS
(C)
Nb RBDs
(D)
(E)
100PNEC< value (a)
(4)
10PNEC< value <100PNEC (b)
PNEC< value <10PNEC (c)
value < PNEC (d)

14. Testing quality and representativeness: distribution statistics
Heptachlor epoxide, fraction Invertebrates:
Substance CAS
Substance name
Heptachlor epoxide
Fraction
Biota Invertebrates
Total Nb analysis 20
Total Nb stations 11
Nb Member States 2
Nb RBD 3
PNEC
7,00E-03
PEC1
1181,73
PEC2
1141,71
Nb analysis <=DLs (used in PEC2 calc.) 7
% analysis <=DLs for which LoD>2PNEC
57%
Nb stations with quantified results (>DL)
Nb analysis >DL (used in PEC1 and PEC2 calc.)
Nb MS
Nb RBDs
100PNEC< value 4 1
10PNEC< value <100PNEC 9
PNEC< value <10PNEC
value < PNEC

15. Testing quality and representativeness: dataset representation

16. Testing quality and representativeness
2,2',4,4',5,5'-Hexachlorobiphenyl (PCB 153), fraction Sediment below 2mm :
Substance CAS
Substance name
2,2',4,4',5,5'-Hexachlorobiphenyl
Fraction
Sediment below 2mm
Total Nb analysis
4933
Total Nb stations
1712
Nb Member States 2
Nb RBD 14
PNEC
2,70E-02
PEC1
38,25
PEC2
11,10
Nb analysis <=DLs (used in PEC2 calc.)
3365
% analysis <=DLs for which LoD>2PNEC
96%
Nb stations with quantified results (>DL)
Nb analysis >DL (used in PEC1 and PEC2 calc.)
Nb MS
Nb RBDs
100PNEC< value
472
1135 11
1942
10PNEC< value <100PNEC
311
414
1101
PNEC< value <10PNEC 6 15 1 3
193
value < PNEC 4
129

17. Testing quality and representativeness: dataset representation

18. Testing quality and representativeness:
Substance CAS
Substance name
2,2',4,4',5,5'-Hexachlorobiphenyl
Fraction
Sediment below 2mm
Total Nb analysis
4933
Total Nb stations
1712
Nb Member States 2
Nb RBD 14
PNEC
2,70E-02
PEC1
38,25
PEC2
11,10
Nb analysis <=DLs (used in PEC2 calc.)
3365
% analysis <=DLs for which LoD>2PNEC
96%
Nb stations with quantified results (>DL)
Nb analysis >DL (used in PEC1 and PEC2 calc.)
Nb MS
Nb RBDs
100PNEC< value
472
1135 11
1942
10PNEC< value <100PNEC
311
414
1101
PNEC< value <10PNEC 6 15 1 3
193
value < PNEC 4
129

19. 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?

20. Thanks for your attention…