germany-chemnitz: architectural, engineering and planning services./ planning of mine construction storage in the kiesholz deposit part of the marienberg deposit. planning services within the meaning of § 43 hoai 2021 are to be provided in the service profile for engineering structures in service phases 1 to 3 and 5 to 7 as well as special services in service phases 2 and 3 and optionally in service phase 8.