· Sewerage master plan for the city of Oldenburg
· Sewerage / Drainage master plan for the city of Magdeburg
· Lübeck / Hydraulic rehabilitation of sewerage in the area “Roter Hahn”
· Concrete corrosion and odor nuisance influenced by high H2S concentrations in the combined sewer networks of "Abwasserzweckverband Bodenniederung"
· Reduction of infiltration at the sewerage network of the Kingdom of Bahrain
· National Master Plan for Sanitary Engineering Services for the Kingdom of Bahrain
· Master Plan for the Sewerage Network in the Emirate of Abu Dhabi