The subject of the contract is planning services at the four Ruhrverband sites in Arnsberg-Wildshausen, Hagen, Wetter-Vollmarstein and Essen-Kupferdreh (three sewage treatment plants and a pumping station). An engineering office is being sought to provide all HOAI levels 1 to 9 at the wastewater treatment plant locations in the field of civil, mechanical and electrical engineering.

The subject of the contract is planning services at the four Ruhrverband sites in Arnsberg-Wildshausen, Hagen, Wetter-Vollmarstein and Essen-Kupferdreh (three sewage treatment plants and a pumping station). An engineering office is being sought to provide all HOAI levels 1 to 9 at the wastewater treatment plant locations in the field of civil, mechanical and electrical engineering.