- Area-By-Area Sewer Condition Recording In The Iserlohn Urban Area For The Years 2025 And 2026- Around 50 Km Of Hd Cleaning And Inspection (Rotary-Swivel Head Camera In Hd Quality) Of Canals Dn 200 To Dn 1800- Around 1749 Pieces Of Shaft Cleaning And Inspection (Spherical Image -Scanner)- Condition Recording According To Dwa-M 149-2/ Din En 13508-2 Data Exchange According To Dwa-M 150
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