Annual Meeting, June , Istanbul, Turkey Use of CHASE assessment tool with EMODNet Chemistry data EMODnet Chemistry Martin M. Larsen, Aarhus University Jesper H. Andersen, Tore Høgåsen NIVA Denmark

Annual Meeting, June , Istanbul, Turkey Test run with all Danish data: Current status # data“good”“modererate”“bad” Water (not shown) Sediments Biota Biological-effects 15960

Annual Meeting, June , Istanbul, Turkey The CHASE model: What is CHASE For each contaminant measured, calculate the ratio to a threshold value (CR): For each substance group, calculate the Contaminant Score (CS): Contaminant scores was collected for water, biota, sediment and biological effects

Annual Meeting, June , Istanbul, Turkey Examples of thresholds

Annual Meeting, June , Istanbul, Turkey The CS for each Data type: Sediment Biota Bio. Marker

Annual Meeting, June , Istanbul, Turkey The CS for each Data type: All together

Example of result list: Name/codeWaterSedimentsBiotaBio-effectsFINAL HIGH HIGH HIGH BAD GOOD HIGH MODERATE HIGH MODERATE HIGH BAD MODERATE GOOD GOOD MODERATE MODERATE POOR MODERATE MODERATE BAD BAD MODERATE GOOD MODERATE BAD BAD MODERATE BAD

Summary of results: Sampling matrixStatus class Assessment units Grand total Denmark - Open seaDenmark - Coastal SedimentHigh037 Good010 Moderate013 Poor011 Bad011 Sediment total062 BiotaHigh083 Good016 Moderate055 Poor022 Bad066 Biota total 0112 Bio-effectsHigh336 Good033 Moderate066 Poor000 Bad000 Bio-effects total31215 IntegratedHigh39598 Good017 Moderate018 Poor022 Bad066 Integrated total

Annual Meeting, June , Istanbul, Turkey So what happened: Combining sediment, biota and biological effects Better geographical coverage Sediment and Biological effect data available for open sea Easy to include water data Only works if Threshold values are comparable ! Several stations can be included in each ”assessment unit” (typically 20x20 km grid coastal)

How to procede: Aggree on substances and thresholds (sea-wise) Currently Cd, Pb, Hg, PAHs, TBT others ? EU EQS limits ”natural” for EU areas (Baltic, North Sea), combined with OSPAR/HELCOM assessment criteria Is the classification suggested ok or use other limits? 0,5 (High)– 1 (Good) – 5 (Poor) – 10 (Bad) Include local/national limits for other areas/parameters And when it all have been integrated… Decide if combined CHASE results can be DIVA’ed Annual Meeting, June , Istanbul, Turkey Planning for the last year