Dredging for Climate Change and Transport in the Netherlands

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Cornelius Strickland
6 years ago
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Dredging for Climate Change and Transport in the Netherlands Dredging to survive Polite Laboyrie (Chairman of CEC and Head of Hydr&Env Eng RWS) Organisation Ministry of

1 Dredging for Climate Change and Transport in the Netherlands Dredging to survive Polite Laboyrie (Chairman of CEC and Head of Hydr&Env Eng RWS) Organisation Ministry of Transport Dredging for Climate Change and Transport in the Netherlands 2 Transport people Transport freight Water protection quality policy makers inspection implementation 1

barrier -etc Navigation: - 5320 km waterways commercial navigation - 1000 km waterways recreation Dredging for

2 Mission and Policy RWS Water Dredging for Climate Change and Transport in the Netherlands 3 Water-based infrastructure Flood defenses: 300 km - Afsluitdijk - Eastern Scheldt storm surge barrier - Maeslant storm surge barrier -etc Navigation: km waterways commercial navigation km waterways recreation Dredging for Climate Change and Transport in the Netherlands 4 Water management structures - 10 dams - 9 discharge sluices - 50 navigation locks -etc 2

Dredging for Climate Change and Transport in the Netherlands 5 Reasons to Dredge in the Netherlands For reasons of transport (maintenance and improvement) For keeping our country safe For reasons of

3 Dredging for Climate Change and Transport in the Netherlands 5 Reasons to Dredge in the Netherlands For reasons of transport (maintenance and improvement) For keeping our country safe For reasons of the environment And for land reclamation For reasons of transport (maintenance and improvement) Dredging for Climate Change and Transport in the Netherlands 6 15 million m3/year in the salt area s 15 million m3/year inland 3

4 To keep our country safe Dredging for Climate Change and Transport in the Netherlands 7 Beach nourishment Dike improvement Room for the rivers New Delta plan (Climat change) 4

5 5

Digging ditches Building Damming dikes water courses Constructing polders Reclaiming land Draining Closing (Sub)catchments estuaries +3m +2m

6 Digging ditches Building Damming dikes water courses Constructing polders Reclaiming land Draining Closing (Sub)catchments estuaries +3m +2m Subsidance and sea level rise +1m MSL - 1m - 2m - 3m SEA LEVEL LAND LEVEL Tidal variation Future sea level Future land level? 6

Dredging for Climate Change and Transport in the Netherlands 14 At this

7 Effects of Climate Change Rise of the sea level Bigger extreme river discharges More extreme rainfall More dry periods Beach Nourishment Dredging for Climate Change and Transport in the Netherlands 14 At this moment 12 million m3/year In the future 4 times more Present cost +/- 50 million euro 7

8 Dredging for Climate Change and Transport in the Netherlands 15 For reasons of the environment Dredging for Climate Change and Transport in the Netherlands 16 Act on Polluted Surface Waters 1970 Sewage and wastewater treatment Control of pollution sources Remediation of contaminated sediments 8

destinations of dredged material Dredging is necessary for navigation, drainage, flood control and environment/ ecology

9 Dredging for Climate Change and Transport in the Netherlands 17 Protection of the Environment Remediation of Petroleum harbour Amsterdam Situation on dredging in the Netherlands Dredging for Climate Change and Transport in the Netherlands 18 destinations of dredged material Dredging is necessary for navigation, drainage, flood control and environment/ ecology million m 3 /year 4% 13% 4% 15% 64% relocation in sea placement on land direct reuse treatment & reuse confined disposal 18 9

Relocation into aquatic system of clean dredged material

19 In the river Waal At sea 19 20 Placement of clean dredged

protection and land improvement Landuse is cattle grazing and

10 Relocation into aquatic system of clean dredged material Dredging for Climate Change and Transport in the Netherlands 19 In the river Waal At sea 19 Dredging for Climate Change and Transport in the Netherlands 20 Placement of clean dredged material on banks of waterways Raising the land for flood protection and land improvement Landuse is cattle grazing and agriculture 20 10

11 Riverdelta IJssel use of dredged material for nature development Dredging for Climate Change and Transport in the Netherlands Dredging for Climate Change and Transport in the Netherlands 22 Confined Disposal Facilities RWS Confined disposal facility Slufter (1987, 90 mio m 3 ) Cdf IJsseloog (2002, 20 mio m 3 ) Cdf Hollandsch Diep (2008, 10 mio m 3,) 11

12 Environmental impacts of dredging Dredging for Climate Change and Transport in the Netherlands 23 (Short-term) effects of the dredging activity: suspended sediment leading to turbidity; overflow from hoppers; loss of dredged material during transport (hopper, pipeline); smothering or loss of benthic fauna at placement site. Decision-making on dredging needs a site specific assessment to determine potential effects on the environment and feasible measures for mitigation or compensation Dredging for Climate Change and Transport in the Netherlands 24 Mitigation of potential environmental impacts Special dredging equipment and measures to: Improve accuracy and reduce dredging volume Reduce turbidity, spill and loss Minimise dilution, increase density of dredged material Measures at the dredging site Measures at the placement site 12

Maasvlakte 2 Dredging for Climate Change and Transport in

13 For land reclamation Dredging for Climate Change and Transport in the Netherlands 25 Artist Impression Maasvlakte 2 Dredging for Climate Change and Transport in the Netherlands milion m3 of sand from the sea will be dredged 13

Regulations for port extension in Rotterdam Air quality Directive Waterframework Directive EMS Birds and Habitat Directive Environmental Quality Standards National Emission Ceiling Directive Soil

14 Regulations for port extension in Rotterdam Air quality Directive Waterframework Directive EMS Birds and Habitat Directive Environmental Quality Standards National Emission Ceiling Directive Soil pollution Directive Groundwater Directive Waste Directive Sulphur Directive +SECA s IMO +Marpol Energy policy +Climate change policy Noise Directive Maritime policy + Seaport policy + Transport policy Ship Waste Directive ICZM (Strategic) EIA Directive IPPC Dredging for Climate Change and Transport in the Netherlands 27 Final Dredging for Climate Change and Transport in the Netherlands 28 Dredging is of increasing importance, not only for the economy but also for safety and the environment. Tool for sustainable development. Each dredging project is unique. Take local conditions into account. Dredging activities have certain impacts, which can be mitigated to a certain extent. Imposing restrictions increases the costs. Balance between economy and the environment. Also balanced regulations 14

CTB3300WCx Introduction to Water and Climate

CTB3300WCx Introduction to Water and Climate IN3 Delta and Estuary intervention Mark Voorendt Hello my name is Mark Voorendt. I am researcher and lecturer on hydraulics structures at the Delft University