Self-monitoring measures for secured contaminated sites

Summary

The tender concerns the long-term execution of self-monitoring measures for seven secured contaminated sites in Hamburg. The contractor must implement and manage a self-monitoring program aimed at verifying the function and effectiveness of containment structures (primarily surface seals). The scope includes on-site hydraulic measurements to monitor liquid levels and oil thickness, groundwater level monitoring, drainage water and rainfall measurements, and test-field measurements. Gas measurements will be conducted at five locations. The contract covers annual site visits and annual reports. The duration is three years from 01 April 2027 to 31 March 2030, with annual reports for 2027/28, 2028/29 and 2029/30; a one-year extension to 01 April 2030 to 31 March 2031 is possible if neither party terminates six months before expiry. The award criteria specify that price is the only award criterion.