Germany – Engineering services – Stadt Bad Neuenahr-Ahrweiler - Hangsicherung und Wiederherstellung Wanderweg unterhalb Calvarienberg, Los 2 - Umwelttechnische Untersuchungen

I. Project description: Following the flood disaster on 14/15 July 2021, the easternly rising slope of the Calvarienberg in Bad Neuenahr-Ahrweiler, district of Ahrweiler, eroded as a result of its exposure as an impingement slope. The Structural and Approval Directorate (SGD) North and the city of Bad Neuenahr-Ahrweiler now see the need to secure and rebuild this riverbank area along the Ahr. As part of this, the asphalted footpath, which also forms a section of the long-distance hiking trail "Ahrsteig" and was also damaged by the flood disaster, will be rebuilt along the slope. II. The investigation area: This involves the eastern embankment section of the Ahr with a steep embankment of approximately 190 m in total length. Of this, approximately 60 m borders vineyard land to the north and approximately 130 m runs as a slope cutting with a gravity retaining wall of natural stone on the mountain side. The support heights range from around 1.5 to 2.8 m. Several meters deep scour holes have formed at the foot of the embankment. Since the Ahr valley lies within the Natura 2000 site "Ahrtal" and the intervention area extends partly into this Natura 2000 site, a Natura 2000 preliminary assessment was carried out. This concluded that significant impacts on the Natura 2000 habitat types cannot be ruled out in the implementation of the necessary slope stabilisation measures. Therefore, in addition to the preparation of a specialist report on nature conservation and a species protection report, the preparation of a Natura 2000 compatibility assessment will also be necessary. The services will be tendered in 2 lots: Lot 1 - Planning services for civil engineering structures, planning services for transport facilities and structural design services - Civil engineering structures in accordance with § 41 HOAI in conjunction with Annex 12 HOAI - Transport facilities in accordance with § 47 HOAI in conjunction with Annex 13 HOAI - Structural design in accordance with § 51 HOAI in conjunction with Annex 14 HOAI Lot 2 - Environmental technical investigations The project will be funded from public funds. III. Performance period: Quarter 3/2027, subject to the approval procedure. For further details, reference is made to the enclosed description of services.