1. The Beemster Polder was dried during the period 1609 through 1612.

2. Both effects are present in the Dutch polder regions leading thus to an accumulation of PAH contaminated sediments.

3. Gradually, the administrative and water conservancy organization of grass roots in polder distinct turned to the martial organization.

4. Knokke-Heist is located along the North Sea in a polder area on the Belgian border with the Netherlands.

5. 14 Then the centuries-old polder method was followed - building and pumps out the water enclosed in order to reclaim the land.