Pesticides in Denmark challenges, management and partnership

Transcription

1 Pesticides in Denmark challenges, management and partnership Stockholm September 13, 2016 Kurt Møller, Senior Advisor at Danish Regions

2 Outline Denmark and the five regions Geology and groundwater Pesticides - point sources or diffuse sources? Groundwater and surfacewater some tools Danish Soil Partnership The future

3 The authorities on soil contamination in Denmark Legislation & guidelines 5 Regions Registration of soil contamination, investigation and remediation Soil Contamination Expertise 98 Municipalities Authority on Planning, Environment and Construction Soil logistics

4 Danish Regions and the five regions in Denmark

5 Geology from Edinburgh to Copenhagen - Limestone

6 Geology of Denmark and groundwater abstraction West DK East DK Clay Sand Limestone

7 Groundwater abstraction balance and sustainability

8 Denmark Lithuania Slovenia Iceland Slovakia Switzerland Croatia Italy Germany Serbia Poland Belgium France Netherlands Finland Turkey Hungary Cyprus Luxembourg Spain Bulgaria Czech Republic Estonia Sweden Portugal Romania England and Wales Greece Ireland United Kingdom Former Yugoslav Norway Northern Ireland (UK) Scotland Latvia Malta Austria Bosnia and Herzegovina Abstraction by public water supply average of the period. (Source Eurostat) 100% 80% 60% 40% 20% 0% Surfacewater Groundwater

9 Pesticides found in groundwater Kilde: Danmarks og Grønlands Geologiske Undersøgelser GEUS

10 In the central part of Jutland pesticides are now detected in 20 % of the wells used for water supply

11 Groundwater monitoring results (GEUS)

12 Which environmental problem concerns the danes? Altinget, marts 2015

13 Soil contamination we want to protect Cultivated land Clean and safe indoor air Surface water Our children Groundwater potential drinking water

14 Political doctrine and drinkingwater in Denmark Drinkingwater supply must be naturally pure groundwater Rather move abstraction well than treat Only a combination of remediating and treating as an exception to the rule

15 Lessons learned - Many more contaminated sites than first expected

16 Special drinkingwater interests

17 Workflow Finding contaminated sites via historical data of land use Suspicion of contamination (V1) Initial investigation Confirmed contamination (V2) Advanced investigations Remediation Increasing expense level Operation Environment & health based priority

18 Region Kommune Miljøstyrelse Natur- Erhvervs tyrelse Naturstyrelse

19 Region Vandfor -syning Rådgivere Natur- Erhvervs tyrelse Kommune Miljøstyrelse Laboratorier Universiteter Forsvaret Naturstyrelse Forurenere GEUS

20 Different roles

21 Pesticides and challenges

22 A litte cartoon about pesticides Punktkilde Punktkilde Punktkilde Punktkilde Fladekilde Fladekilde/ punktkilde??? Helweg 1994

23 Point or diffuse source? Diffuse source Large area - in the fields Low concentration Authority: Municipality and the Danish EPA (groundwater actionplans and approval) Point source Small area High concentration in water Authority: Regions

24 Distinction between point and diffuse pesticide sources

25 It is a lottery to place wells in the optimal location to delineate the plume Isolate hotspot, clean it up and handle the plume

26 Guideline from the Danish EPA, 1998: Point of compliance (POC) -Quality criteria should be met within the distance traveled by the groundwater during one year, but max 100 meters. Secondary aquifer Secondary aquifer -Ongoing discussions on revising the guideline Primary aquifer POC 1 year/ 100 m

27 Calculating Flux from a point source

28 Control plane Source P0 Unsaturated zone J kilde = C kilde A kilde N Unsaturated zone P1A P1A GWT GWT Aquifer P1B P2 Mass discharge Troldborg (2010) J n i 1 C i K i A i i

29 WFD modelling and scale (ramdirektivet för vatten)

30 Screening of surfacewater and nature

31 Surface water

32 Surface water

33 Railroads and pesticides

34 Danish Soil Partnership objective Promote technological development Create project- and business oriented alliances Market Danish soil solutions

35 National network of test sites in Denmark - innovation

36 Future and abroad

37 New projects, new partners, new challenges Strategy Culture Structure Workingprocesses Projects People Plans Habits

38 Summary Many more contaminated sites than first expected in Denmark For many sites, the polluter cannot be held responsible so the government must pay Not all polluted sites need to be cleaned up, but we must know where they are Risk based remediation highest risks are handled first DNAPLs, Pesticides, PFAS and climate change

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40 Any questions?