Monitoring maasvlakte 2 impact

1. Maasvlakte 2
ir. William Borst
DSD 2 November 2015
Monitoring Maasvlakte 2 impact

2. 2
Monitoring Maasvlakte 2 impact
Construction of Maasvlakte 2
Situation 2008 Master Plan (2030)

3. 3
Monitoring Maasvlakte 2 impact
Development stages : 2009 thr 2011

4. 4
Monitoring Maasvlakte 2 impact
Environmental Impact Assessement
Effects of offshore sand extraction are assumed to be caused
by the dispersion of silt from borrow area by the overflow of
TSHD:
 Tide
 Currents
 Waves
The impact assessment was based on 300 million m3 of sand
to be extracted.

5. 5
Monitoring Maasvlakte 2 impact
The EIA identified the following effect chain:
Turbity increase by overflow tshd
Extra fines in the water column 
Less sunlight penetration 
Less primary production (algae) 
Less growth of marine life (shell fish)
Thus Insufficient food for “animals” on red lists (ducks)
The silt content in the possible borrow areas was between 1,5
and 2,5 %.
Please note that Maasvlakte 2 borders a Nature 2000 area.

6. 6
Monitoring Maasvlakte 2 impact
Reclamation is by sand extraction from borrow area 10 km
offshore with Trailing Suction Hopper Dredger (TSHD).
Construction started offshore in January 2009

7. 7
The sand extraction permit stipulates w.r.t. to
monitoring:
Every fortnight during construction
At three representative cross sections
Vertical profile measurements (silt concentration)
Monitoring Maasvlakte 2 impact

8. 8

9. 9
Monitoring Maasvlakte 2 impact

10. 10
Monitoring Maasvlakte 2 impact
POR decided that the permit conditions were “clear” and concrete
but not very practical.
Hence an other approach was proposed to the authorities
Deltares & IVM had carried out a pilot project for POR in 2007 in
which remote sensing data was assimilated in Delft 3D.
This approach resulted in a new model : MoS2
“Model Supported Modelling of Suspended Matter
This was, first of all, a hindcast model with a.o. real meteo data.
The POR vertical profiles (in-situ data) were used for validation
For the years 2003 till 2011 Silt Atlases were produced.

11. 11
Monitoring Maasvlakte 2 impact