Distribution of dust, iron and copper
Moving trains produce dust and wear of copper and iron parts. Every passing trains causes an enormous air blast. The particles of copper, iron and dust are so light, that they are sucked into the passing current. But most of these particles end up on or close to the track.
Copper
Around 80% of the copper particles end up on the railway bed. The remaining 20% lands close to the railway. There is hardly or no accumulation of copper in the soil. At greater distances, such as 15 metres from the middle of the track, no appreciable increase in copper precipitation is expected, so that the effect of copper on (leafy) vegetables may be considered negligible.
Iron
For (leafy) vegetables, no increased iron precipitation is expected at distances of more than 15 metres from the middle of the track. But the amount of iron released is greater than the amount of copper, and iron is transported over greater distances.
Dust and sand
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Measures will be taken against the dispersion of loose sand and dust beside the track. The high speed trains' contribution to the pollution of green houses as a result of dust is negligible.
Pollution
In a number of places along the route, a sample was taken prior to the construction work. If after a period of time there is evidence that pollution has occurred that is directly attributable to the construction and operation of the HSL and/or the broadened/diverted A16 and A4 motorways, then claims for damages may be filed with the Claims Compensation Board for HSL, A16 and A4.