Relevance of moving recent and historic upstream contaminants for Hamburgs dredging strategy and the North Sea

Transcription

1 Relevance of moving recent and historic upstream contaminants for Hamburgs dredging strategy and the North Sea Henrich Röper, Maja Karrsch, Rolf Lüschow, Hamburg Port Authority René Schwartz, Ilka Carls, Ministry of Environment & Energy, Hamburg 15 June 2017, Genoa

2 Relevance of moving recent and historic upstream contaminants for Hamburgs dredging strategy and the North Sea 01 Relevance for the Estuary and the Sea? 05 Outlook 02 Dredging for Navigation 03 Impact of the PCB incident on dredged sediments 04 Influence for dredged material management - North Sea disposal 2

3 01 Relevance for the Estuary? 3

4 Baltic Sea North Sea? Hamburg, Germany Berlin, Germany Schmilka D/CZ Border Giant Mountains, Czech Republic Prague, Czech Republic Source: Google

5 Port of Hamburg Germany s biggest port influenced by tide 100 km distance to North Sea 5

6 Birds / Habitats (Natura 2000) Wadden Sea

7 Sediments from upstream and the North Sea 10:1 7

8 Todays contamination TBT p,p DDD PCB-180 p,p DDE p,p DDT PCDD/F Cd HCB PCB-138 Hg Pb Zn PCB-153 Schwartz/ELSA

9 02 Dredging for Navigation 9

10 Dredged Material Management Concept NORTH SEA DISPOSAL BENEFICIAL USE DISPOSAL RELOCATION HAMBURG LOW CONTAMINATION North Sea placement 1-3 mio m 3 /a Relocation within river 4-8 mio. m 3 /a TREATMENT HIGH OR SPECIFIC CONTAMINATION Land treatment and disposal up to 0,5-1 mio m 3 /a 10

11 Land treatment and disposal Regular river maintenance total cost: ~ 75 Mio. per year! Land treatment: 1/5 of volume, but 3/4 of cost! 11

12 71% 62% 55% 51% 65% 94% Hydrological conditions Headwater discharge 1100 [m³/s] Abflußjahr: 2013/ / / / 2017 MQ₅₀ Nov Dez Jan Feb Mrz Apr Mai Jun Jul Aug Sep Okt 12

13 Trübung [TE/F] Hydrological conditions Turbidity / / / /2017 von 1995 Bis Nov Dez Jan Feb Mrz Apr Mai Jun Jul Aug Sep Okt 13

14 Development of Dredged material amounts (Hamburg only) Relocation Hamburg North Sea Landtreatment Total Amount 14

15 03 Impact of the PCB incident on dredged sediments 15

16 Possible impact on the sediments in the estuary / Port of Hamburg 16

17 Possible impact on the sediments in the estuary / Port of Hamburg SF Ref-1 Ref-3 Ref-4 Ref-5 Ref-6 Ref-7 Ref-8 Ref-9 Ref-10 Außeneste Köhlfleet Parkhafen Vorhafen Reiherstieg Nord Hansahafen Baakenhafen/Strandhafen Dove Elbe Sandauhafen Ref-11 Seehafen 4 Ref-12 Ref-13 Ref-14 Ref-15 Wedel (S-Fang) = 2013: 2,7-2,8 // 2016: 2,8-3,2 2013: 3,1 2016: 2,9 1 Reiherstieg Vorhafen Süd Rethe Neuhof Bullenhausen Rethe Einfahrt 2013: 2,2 2016: 3, : 2,5 2016: 3,9 2013: 1,9 2016: 3,0 2013: 2,3 2016: 2,8 2013: 2,2 2016: 2, : 2,3 2016: 2,8 2013: 2,1 2016: 3, : 2,4 2016: 3,5 11 Port of Hamburg (fresh settled fine sediments) : 2,1 2016: 4,0 2013: 4,3 2016: 3,0 Norderelbe Süder -elbe 2013: 2,4 2016: 3,9 Oortkaten (Ref-20) = 2013: 2,3 // 2016: 3,9 Stover Strand (Ref-22) = 2013: 2,2 // 2016: 4, : 2,3 2016: 3,3 2013: 2,5 2016: 3,

18 04 Influence for dredged material management North Sea disposal 18

19 Why North Sea? Stakeholder involvement Common economic and ecologically handling of sediments in the Elbe Involvement of stakeholders to bring in all relevant aspects not covered by the concept (yet) Consultation of environmental NGOs, business representatives, Ministries, communities, fishery and tourism organizations etc. Develop recommendation for the political-administrative level consisting of a well documented report determining consesus and dissensus areas

20 Assessment criteria for North Sea Disposal Parameter Arsenic < 20 µm Lead < 20 µm Cadmium < 20 µm Chrome < 20 µm Copper < 20 µm Nickel < 20 µm Mercury < 20 µm Zinc < 20 µm TBT (Gesamtfraktion) KWST < 63 µm PAK16 < 63 µm PCB7 < 63 µm a-hch < 63 µm g-hch < 63 µm p,p'-dde < 63 µm p,p'-ddd < 63 µm p,p'-ddt < 63 µm PeCB < 63 µm HCB < 63 µm Unit mg/kg TS mg/kg TS mg/kg TS mg/kg TS mg/kg TS mg/kg TS mg/kg TS mg/kg TS µg/kg TS mg/kg TS mg/kg TS µg/kg TS µg/kg TS µg/kg TS µg/kg TS µg/kg TS µg/kg TS µg/kg TS µg/kg TS GÜBAK Action level 1 Action level ,5 4, ,7 2, ,8 5, ,5 1,5 0,5 1, ,8 5,5 Köhlbrand Average x SD 35 2,5 90 5,1 2,8 0, ,8 0, ,6 69,0 2,5 0,9 20,9 5,2 1,0 0,4 0,4 0,4 4,8 1,7 14,4 4,3 5,2 2,7 1,7 0,6 9,3 3,9 20

21 Monitoring E3 350 analyses per campaign, most intensive programm in European coastal waters. 2x / year - sediments, biotoxicity, fauna, etc. various organisms common whelk, abra alba (shell), dab, since 2017: shrimp, plaice Monitoring working group with members from federal states Seite 21

22 Monitoring Das Umweltmonitoring ist mit 350 Analysen pro Kampagne das umfassendste Monitoring dieser Art in europäischen Küstengewässern. Das Monitoring umfasst zweimal pro Jahr Untersuchungen der Sedimente, der Bioakkumulation und der Fauna bei Tonne E3 und im umgebenden Bereich. Arten, die auf Schadstoffanreicherungen im Organismus untersucht werden: Wellhornschnecke, Pfeffermuschel, Kliesche. Neu: Nordseegarnele, Scholle Abstimmung in länderübergreifender Monitoring-AG Seite 22

23 Since 2017: Investigation of Makrophytes (Helgoland) Documentation in picture and video Additional activity, consistent with ungoing monitoring activities 23

24 05 Outlook 24

25 Baltic Sea North Sea? Hamburg, Germany Berlin, Germany Schmilka D/CZ Border Giant Mountains, Czech Republic Prague, Czech Republic Thank You! Source: Google