For general questions please contact the province of South Holland: +31 (0)70 441 66 22
For questions about the research at the Sand Motor, please contact Rijkswaterstaat by phone +31 (0)800 8002 or via email
For general questions please contact the province of South Holland: +31 (0)70 441 66 22
For questions about the research at the Sand Motor, please contact Rijkswaterstaat by phone +31 (0)800 8002 or via email