The purpose of the services is:o the annual inspection of the structures of the Fréjus road tunnel: tube G1 and its related structures, tube G2, interconnection structures, 4 underground ventilation plants and buried parts of the external ventilation plants; a summary of measurements, surveys and studies carried out since the last detailed inspections and their analysis for inclusion in the inspection, and reports; updating the mapping of the Inspection Identification Sheets (IIS), the "Sections" database and the edition of the section sheets and the synopsis of the monitoring levels;o recommendations for the adaptation of the surveillance policy;o drafting inspection reports. The inspection concerns civil engineering and covers all parts and sub-parts of the works. For sewerage and drainage networks, it covers only their parts accessible by niches or manholes.

The purpose of the services is:o the annual inspection of the structures of the Fréjus road tunnel: tube G1 and its related structures, tube G2, interconnection structures, 4 underground ventilation plants and buried parts of the external ventilation plants; a summary of measurements, surveys and studies carried out since the last detailed inspections and their analysis for inclusion in the inspection, and reports; updating the mapping of the Inspection Identification Sheets (IIS), the "Sections" database and the edition of the section sheets and the synopsis of the monitoring levels;o recommendations for the adaptation of the surveillance policy;o drafting inspection reports. The inspection concerns civil engineering and covers all parts and sub-parts of the works. For sewerage and drainage networks, it covers only their parts accessible by niches or manholes.